Opening apparatus for manhole cover

专利摘要:
The present invention relates to a manhole cover opening device for easily and simply opening the manhole cover. The present invention, in opening the manhole cover 20 having three open grooves 21, is provided with three fixing feet 13a, 13b, 13c which are bent in a hook shape while having a pointed end. After arranging the fixing feet 13a, 13b, and 13c in a radial manner, the center nut 14 is disposed at the center thereof, and each of the fixing feet 13a, 13b, and 13c is connected to the chains 15a, 15b, and 15c. 13a has a main body 11 frame having a length longer than the center nut 14 at one end thereof, and one end of the fixing foot 13a is installed as a support 19 inclined by the support 19 at one end thereof, and the end thereof is lowered. Fixed to protrude from the upper side, and a vertical shaft 18 having a central tube 17b at the upper end is installed at the upper side opposite to the upper side, and the center nut 14 has a height of the vertical axis 18 having a single tube 17a at the upper end. It is made by fastening the screw rod (16).
公开号:KR20020026336A
申请号:KR1020020014177
申请日:2002-03-15
公开日:2002-04-09
发明作者:이철우
申请人:이 상 종；(주)일산금속；
IPC主号:

专利说明:

Opening apparatus for manhole cover
[18] The present invention relates to a manhole cover opening device, and more particularly, to a manhole cover opening device for opening the manhole cover easily and simply.
[19] In general, the manhole is composed of a manhole support frame and a manhole cover seated on the upper part. In addition, two and three open grooves are formed around the manhole cover to facilitate opening.
[20] Conventionally, when opening the manhole cover, a sharp pointed tool such as a pickaxe is inserted into the opening groove of the manhole cover, and then lifted by one of the levers, and then the worker lifts it up and opens it.
[21] However, since the operation of opening and closing the manhole cover is performed by manual labor, it is very difficult and laborious, and in particular, the manhole cover has a huge weight as described above, and thus, the work is difficult and difficult.
[22] In addition, in case of manholes installed on the road, there is a risk of safety accidents that are opened by the impact when the vehicle is stepped on, causing accidents of the following vehicles or pedestrians falling out. In this case, the manhole cover had to be rotated at an angle to open the lock to release the lock, which was more difficult and difficult to close.
[23] In addition, when opening the manhole cover of various structures as described above, there is a concern that a safety accident such as injury to the waist or a part of the body is injured due to the worker's excessive force.
[24] Accordingly, the present invention has been made to solve the above problems, and provided with a manhole cover opening device to facilitate opening the manhole cover installed with a general manhole cover or a lock device through which manhole cover of any size manpower or machine It is an object of the present invention to provide a manhole cover opening device that can be easily and simply opened with a large force.
[25] The manhole cover opening device according to the present invention for achieving the above object is provided with three fixing feet bent in a hook shape while the end is pointed when opening the manhole cover having at least three opening grooves around the manhole cover After arranging the fixing feet radially, the center nut is placed in the center of the fixing feet and connected to each other by a chain, and at one end of the fixing feet, a body frame having a length longer than the center nut is provided. It is installed inclined as a support and fixed to the end so that its end protrudes to the bottom, and on the opposite side, a vertical shaft having a center pipe in the upper direction is installed on the upper side, and a screw rod having a vertical shaft height having a pipe in the upper end is fastened to the center nut. It is achieved by providing a manhole cover opening device configured.
[26] In addition, the manhole cover opening device according to the present invention when the manhole having at least two opening grooves around the manhole cover to open the inside is hollow and has a length adjusting nut at both ends and the lifting ring is provided around both sides and the center And a manhole cover opening device consisting of a screw rod having a fixed body for screwing the body and the length adjusting nut, respectively, and being inserted into the opening groove at each end to hang the lid.
[1] 1 is a perspective view of a manhole cover opening device according to a first embodiment of the present invention,
[2] Figure 2 is an operating state of the manhole cover opening device according to the first embodiment of the present invention,
[3] Figure 3a, 3b is a state of use to raise the manhole cover to the manhole opening device according to the first embodiment of the present invention,
[4] 4 is another embodiment of the main body and the fixed foot according to the first embodiment of the present invention,
[5] 5 is a perspective view of a support wing installed in the main body of the present invention,
[6] Figure 6 is a perspective view showing the structure of the manhole cover opening device according to a second embodiment of the present invention,
[7] Figure 7 is an operating state of the manhole cover opening device according to a second embodiment of the present invention,
[8] 8A and 8B are diagrams illustrating a state in which a manhole cover is pulled up using a manhole opening device according to a second embodiment of the present invention.
[9] Explanation of symbols on main parts of drawing
[10] 1-Manhole cover 2-Opening groove 10-Manhole cover opening device
[11] 11-Main Body 12-Shaft Support Groove 13a, 13b, 13c-Fixed Foot
[12] 14-Center nut 15a, 15b, 15c-Chain 16-Threaded rod
[13] 17a, 17b-Single tube 18-Vertical axis 19-Support
[14] 20-Manhole cover opening device 21-Body 22a, 22b-Length adjusting nut
[15] 23a, 23b-Lift ring 24a, 24b-Screw rod 25a, 25b-Fixed foot
[16] 26-Support wing C-Chain block T-Turnbuckle
[17] S-Support Bar
[27] Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.
[28] 1 is a perspective view of a manhole cover opening device according to a first embodiment of the present invention, Figure 2 is an operating state diagram of the manhole cover opening device according to a first embodiment of the present invention, Figure 3a, 3b is a first embodiment of the present invention Figure 1 is a state diagram used to raise the manhole cover with a manhole opening device according to an embodiment, Figure 4 is another embodiment of the main body and the fixing foot according to the first embodiment of the present invention, Figure 5 is a support wing to the body of the present invention Figure 6 is a perspective view of the installed state, Figure 6 is a perspective view showing the structure of the manhole cover opening device according to a second embodiment of the present invention, Figure 7 is an operating state diagram of the manhole cover opening device according to a second embodiment of the present invention, 8A and 8B are diagrams illustrating a state in which a manhole cover is pulled up using a manhole opening device according to a second embodiment of the present invention.
[29] As shown in these figures, the manhole cover opening device according to the present invention when opening the manhole cover having at least three opening grooves around the manhole cover has three fixed feet bent in the shape of a hook After arranging the fixing feet radially, and having a center nut at the center thereof and connecting them to the chain, respectively, and having a body frame having a length longer than the center nut at one end of the fixing feet, one fixing foot at one end thereof Is installed to be inclined to the support to secure the end to protrude to the bottom, and on the opposite side of the upper side is installed a vertical shaft having a central tube in the upper end, and the center nut has a screw rod having a vertical shaft height in the upper end It is characterized by being configured to fasten.
[30] In addition, the manhole cover opening device according to the present invention when the manhole having at least two opening grooves around the manhole cover to open the inside is hollow and has a length adjusting nut at both ends and the lifting ring is provided around both sides and the center And a screw rod having a fixed foot for screwing the body and the length adjusting nut, respectively, and being inserted into the opening groove at each end to hang the lid.
[31] (First embodiment)
[32] 1 is a perspective view of a manhole cover opening device according to a first embodiment of the present invention, Figure 2 is an operating state of the manhole cover opening device according to a first embodiment of the present invention.
[33] As shown, the manhole cover opening device 10 of the present invention is for opening a manhole cover 1 in which three open grooves 2 are formed, and three fixing feet 13a according to three open grooves 2. (13b) and (13c) are comprised.
[34] The three fixing feet 13a, 13b, and 13c are bent in the shape of hooks and pointed so that they do not fall well after being fitted into the opening groove 2 of the manhole cover 1.
[35] They are arranged radially with the center nut 14 at the center, and are then connected to the center nut 14 and the chains 15a, 15b and 15c, respectively.
[36] In addition, the lower portion is provided with a main body 11 of a long U-shaped frame is fixed to one side 13a is inclined to the main body 11 as a support 19. The length of the main body 11 has a length longer than the length of the center nut 14 at least at the end of the fixed foot (13a), the end of the combined fixed foot (13a) is the opening of the lid at the end of the main body (11) It protrudes enough to be inserted into the groove (2).
[37] In addition, the screw rod 16 is vertically fastened to the center nut 14, and the end pipe 17a in the horizontal direction is coupled to the upper end of the screw rod 16.
[38] A shaft supporting groove 12 supporting the lower end of the screw rod 16 is formed at the center of the main body 11 in contact with the lower end of the screw rod 16.
[39] In addition, the vertical shaft 18 having the height of the screw rod 16 is fixedly coupled to the opposite side of the main body 11 to which the fixed foot 13a is coupled, and at the upper end thereof, the end pipe 17a of the upper end of the screw rod 16 and The same other end pipe 17b is provided in the main body 11 direction.
[40] The manhole cover opening device according to the present invention having the configuration as described above is to open the manhole cover 1 to the manhole cover opening device 10, the main body 11 to the manhole cover (1) After seating on the upper surface of the fixed foot (13a) coupled to its end is inserted into the one side open groove (2) and the other two fixed feet (13b) (13c) are inserted into the open groove (2), respectively.
[41] When the screw rod 16 is inserted into the center nut 14 and then rotated, the lower end of the screw rod 16 is supported by the shaft support groove 12 of the main body to rotate and the center nut 14 is the screw rod 16. The chain 15a, 15b, and 15c, which are lifted up and down and connected to the fixing feet 13a, 13b, and 13c, are tensioned in accordance with the degree of lifting of the center nut 14.
[42] In this case, when the diameter of the manhole cover 1 is small, if the screw rod 16 is rotated a lot, the center nut 14 rises in height, and the chains 15a, 15b, and 15c are tense, and the manhole cover 1 In the case of large diameter, the chains 15a, 15b and 15c are tensioned even if the screw rod 16 is only slightly rotated.
[43] When the chains 15a, 15b, and 15c are tensioned in this manner, the fixing feet 13a, 13b, and 13c remain firmly coupled to the opening grooves 2 so that the fixing feet are lifted even when the lid is raised. The 13a, 13b, and 13c do not come out from the opening groove 2.
[44] When the fixing feet 13a, 13b, and 13c are firmly fitted into the opening grooves 2, the end pipe 17a of the upper end of the screw rod 16 coincides with the end pipe 17b of the upper end of the vertical shaft 18, and then the lever Insert the support bar 22, such as to open.
[45] In the case of the manhole cover 1 without the locking device at the lower side, the support bar 22 is lifted up using the lever principle or the wire is connected to the end pipes 17a and 17b of the screw rod or the vertical shaft 18. As shown in 3a and 3b, a pulley device such as a chain block (C) or a turnbuckle (T) is used to raise and open it. In the case of a manhole cover (1) equipped with a locking device, the support bar 22 is rotated to rotate the principle. As in the state in which the vertical axis 18 is rotated about the screw rod 16, the manhole cover 1 can be easily rotated.
[46] After releasing the locking device by such a rotation operation, the support bar 22 or the pulley device can be conveniently opened as described above.
[47] On the other hand, when closing the manhole cover can be easily and simply closed by closing in the same way.
[48] Figure 4 is another embodiment of the main body and the fixed foot according to the first embodiment of the present invention, as shown in the support (19) is a hinge (H) is coupled to the upper and lower pivot 13a.
[49] If the diameter of the manhole cover 1 is small when the fixing feet 13a, 13b, 13c are inserted into the opening groove 2 of the manhole cover 1, the fixing feet 13a, 13b, 13c When the inclination angle of) increases and the diameter of the manhole cover 1 is large, the inclination angle of the fixing feet 13a, 13b, and 13c becomes small. If the fixing feet 13a are fixed at a constant angle, the standard is By not actively responding to the other manhole cover (1) may not be firmly coupled to the manhole cover (1).
[50] Therefore, the fixed foot 13a is hinged (H) by the main body 11 and the support 19 so that the angle can be adjusted according to the specifications of each manhole cover (1) there is an effect that can maintain a more solid coupling state.
[51] Meanwhile, as shown in FIG. 5, when the main body 11 is rotated to open the manhole cover 1 by forming the support wings 26a at both front and rear sides of the main body 11, the support wings 26a are formed. The main body 11 can be stably supported so as not to flow from side to side.
[52] Second Embodiment
[53] Figure 6 is a perspective view showing the structure of a manhole cover opening device according to a second embodiment of the present invention, Figure 7 is an operating state diagram of the manhole cover opening device according to a second embodiment of the present invention.
[54] As shown, the manhole cover opening device 20 of the present invention has a body 21 and a pair of screw rods 24a and 24b screwed to both sides thereof, and end portions of the respective screw rods 24a and 24b. It consists of an open ring 25 formed integrally.
[55] This is for opening the manhole cover 1 having two opening grooves 2, the body 21 is arranged in parallel with the circular plate having a predetermined length and the length adjusting nuts (22a) (22b) between the ends thereof. It is provided coaxially, and the length adjustment nuts 22a and 22b of both sides are comprised so that the direction of the screw thread may mutually reverse.
[56] In addition, both sides of the body 21 are welded to the ring annular lifting ring (23a) (23b).
[57] The screw rods 24a and 24b are coupled to the length adjusting nuts 22a and 22b formed on both sides of the body 21, and the fixing feet 25a and 25b are integrally formed at the outer end thereof.
[58] The fixing feet 25a and 25b are hook-shaped, and their ends are pointed to be easily inserted into the opening grooves 2 of the manhole cover 1, and once inserted into the opening grooves 2, The end has a hook shape so as not to fall out.
[59] In addition, the lower end of the inner end of each of the fixing feet (25a, 25b) is formed with a support blade for preventing rotation (26).
[60] In order to open the manhole cover 1 using the manhole cover opening device 20 of the present invention having such a structure, the body 21 is fixed and both screw rods 24a and 24b are rotated or As shown in Figure 2, both sides of the screw rods 24a and 24b are fixed and the body 21 is rotated in one direction.
[61] Since the length adjustment nuts 22a and 22b installed on both sides of the body 21 are opposite in the screw direction, when the body 21 is rotated, both screw rods 24a and 24b protrude from the body 21. Lengthens.
[62] Of course, when the screw rods 24a and 24b are protruded in advance, the length of the body 21 is reduced by rotating the body 21 in the opposite direction.
[63] By this operation, the fixing feet 25a and 25b on both sides are opened at the opening grooves 2 of the manhole cover 1, and then the ends of both fixing feet 25a and 25b are opened on the manhole cover 1. After inserting into the groove (2) to rotate the body 21 in the opposite direction.
[64] At this time, the anti-rotation support wings 26 formed at one lower end of each of the fixing feet 25a and 25b are in close contact with the upper surface of the manhole cover 1 so that the fixing feet 25a and 25b rotate along the body 21. Will not be.
[65] In this case, since both screw rods 24a and 24b are inserted into the inside of the body 21, the entire length is shortened, so that both hooks are firmly fixed by biting the opening groove 2.
[66] In this state, as shown in Figure 8a by connecting the lifting ropes (L) to the lifting hooks (23a) (23b) on both sides and lifted using a chain block (C) or various pulleys fixedly fixed to the support at a certain height. Can be opened
[67] In particular, when there is no equipment such as the chain block (C), as shown in Figure 8b it can also raise the manhole cover (1) using a turnbuckle (T).
[68] On the other hand, in the case of the manhole cover (1) having a locking device is to be rotated by a certain angle to be released from the locking device.
[69] Therefore, before opening the manhole cover 1, the manhole cover opening device 20 itself is directly rotated, or a support bar, not shown in the figure, such as a lever, is inserted into both side hooks 23a and 23b of the body 21. The manhole cover 1 can be easily and simply rotated by rotating the support bar by connecting the impression rope L to the support bar and then connecting the impression rope L to the support ring 23a and 23b.
[70] As described above, the manhole cover opening device according to the present invention is a manhole cover opening device having three fixing feet and a manhole cover opening device having two fixing feet, each of the two fixing feet by the rotation of the body or screw rod And the manhole cover having three open grooves is firmly buried and fixed, so it can be opened easily and conveniently by hand or using an impression means such as a chain block, that is, a pulley device. The manhole cover can also be easily opened.

权利要求:
Claims (2)
[1" claim-type="Currently amended] In opening a manhole having at least two open grooves 2 around the manhole cover 1,
A body 21 having a hollow inside and having length adjusting nuts 22a and 22b at both ends thereof and having hooks 23a and 23b around both sides and a central portion thereof;
Screw rods having fixing feet 25a and 25b respectively screwed to the length adjusting nuts 22a and 22b and inserted into the opening grooves 2 at each end to hang and fix the manhole cover 1. Manhole cover opening device, characterized in that composed of 24a) (24b).
[2" claim-type="Currently amended] The manhole cover opening device according to claim 1, wherein the anti-rotation support wings (26) are coupled to the lower ends of the inner ends of the fixing feet (25a) (25b).

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同族专利:

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公开号 | 公开日

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KR100385651B1|2003-06-02|

引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:
2002-03-15|Application filed by 이 상 종, (주)일산금속

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2002-03-15|Priority to KR20020014177A

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2002-04-09|Publication of KR20020026336A

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2003-06-02|Application granted

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2003-06-02|Publication of KR100385651B1

优先权:

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申请号 | 申请日 | 专利标题

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KR20020014177A|KR100385651B1|2002-03-15|2002-03-15|Opening apparatus for manhole cover|