Well lid opening tool

Abstract

The utility model belongs to the technical field of equipment for well lids, and particularly relates to a well lid opening tool which comprises a well lid body and two lid opening holes symmetrically formed in the well lid body and further comprises a limiting assembly arranged above the well lid body, and the limiting assembly comprises two supporting frames symmetrically arranged above the well lid body in a crossed mode. Through holes are formed in the positions where the two supporting frames intersect and coincide with each other correspondingly, and oppositely-locking bolts are inserted into the two through holes in a penetrating mode. By means of cooperation of a supporting frame and a claw pin, well lids of different sizes can be hoisted by means of a crane, meanwhile, a smoothing assembly is added, and the situation that after the well lid body is pulled up, due to center inclination, the whole well lid body slides in one direction in an inclined mode can be prevented by means of cooperation of a spring and an extrusion block in the smoothing assembly; and surrounding operators are hurt.

Description

Technical Field

[0001] The utility model belongs to the technical field of equipment for manhole covers, and in particular relates to a manhole cover opening tool. Background Art

[0002] In industrial production plants, there are a large number of sewage pits and sewage wells that need to be checked regularly. Conventional methods for opening manhole covers include crowbar method, rotation method, and shovel method. The above methods all use tools to lift the corners of the manhole cover and then manually move the manhole cover. The manual manhole cover opening method is not only inefficient and consumes a lot of physical strength, but also has the risk of pinching fingers and people falling. Therefore, it is necessary to design a manhole cover opening tool that can use forklifts and other lifting vehicles in the factory area to open the manhole cover;

[0003] After checking, the public (announcement) number: CN209872298U discloses a tool for opening a manhole cover. This technology discloses "including a base, the upper part of the column of the base is rotatably connected to the start rod, and one end of the start rod is provided with an operating rod and other technical solutions; it has a simple structure and is easy to operate" and other technical effects;

[0004] However, in these conventional methods, if the tool is used at an improper angle, resulting in uneven force, there is a risk of damaging the manhole cover. In addition, the manual method of opening the manhole cover is not only inefficient and physically demanding, but also has the risk of pinching fingers and causing people to fall.

[0005] In order to solve the above problems, a manhole cover opening tool is proposed in this application. Utility Model Content

[0006] In order to solve the problems raised in the above background technology, the utility model provides a manhole cover opening tool, which has the characteristics that when the manhole cover is opened by using the tool fixture, the manhole cover can be opened with the help of a lifting vehicle such as a forklift in the factory area, saving time and labor and reducing the operation risk.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a manhole cover opening tooling, comprising a manhole cover body and two opening holes symmetrically arranged inside the manhole cover body, and also comprising a limit assembly arranged above the manhole cover body;

[0008] The limiting assembly includes two support frames symmetrically and cross-arranged above the manhole cover body, and the two support frames are respectively provided with through holes at the positions where they cross and overlap with each other, and locking bolts are inserted through the two through holes. The two support frames are rotatably connected through the through holes and the locking bolts, and the two support frames are provided with a positioning cylinder at one end close to the manhole cover body, and a positioning rod is slidably connected to the inside of the positioning cylinder, and the end of the positioning rod away from the positioning cylinder penetrates the manhole cover body through the cover opening hole and is fixedly connected to a claw pin arranged under the manhole cover body, and the end of the positioning rod away from the claw pin is fixedly connected to a positioning pin.

[0009] As a preferred embodiment of the manhole cover opening tool of the utility model, two first rubber pads are symmetrically fixedly connected to the upper surface of each claw pin, and the first rubber pads are in contact with the bottom surface of the manhole cover body.

[0010] As a preferred embodiment of the manhole cover opening tooling of the utility model, each of the support frames is provided with a ball groove on one side close to the positioning cylinder, and a limiting ball is arranged inside each ball groove. The limiting ball is rotatably connected to the support frame through the ball groove, and a connecting rod is fixedly connected to the surface of the limiting ball, and the end of the connecting rod away from the limiting ball is fixedly connected to the corresponding positioning cylinder.

[0011] As a preferred embodiment of the manhole cover opening tooling of the utility model, a lifting hole is provided at one end of each of the support frames away from the positioning tube.

[0012] As a preferred embodiment of the manhole cover opening tool of the utility model, it also includes a smoothing component arranged on the surface of the support frame;

[0013] The smoothing assembly includes two damping shafts symmetrically arranged on the surface of each support frame, the damping shaft is fixedly connected to a positioning block at one end away from the support frame, the positioning block is rotatably connected to the support frame through the damping shaft, a support block is arranged on the surface of the positioning block, a positioning groove is provided inside the support block, the positioning block is slidingly connected to the support block through the positioning groove, an extrusion block is fixedly connected to one end of the support block close to the manhole cover body, a spring is provided inside the positioning groove, and both ends of the spring are respectively fixedly connected to the extrusion block and the positioning block.

[0014] As a preferred embodiment of the manhole cover opening tool of the utility model, the bottom surface of each extrusion block is fixedly connected with a second rubber pad, and the second rubber pad and the upper surface of the manhole cover body are in contact with each other.

[0015] Compared with the prior art, the beneficial effects of the utility model are: a limit assembly is added to the present application, and the cooperation of the support frame and the claw pin can be utilized, and manhole covers of different sizes can be lifted with the help of a crane. At the same time, a smoothing assembly is added, and the cooperation of the spring and the extrusion block therein can be utilized to prevent the manhole cover body from tilting in one direction and injuring the surrounding workers due to the center tilt after being pulled up. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the positioning cylinder and the positioning pin in the utility model;

[0019] Figure 3 It is a structural schematic diagram of a vertical cross section of a positioning cylinder in the utility model as viewed from the right;

[0020] Figure 4 This is a structural schematic diagram of a vertical cross section of a stop ball in the utility model;

[0021] In the figure:

[0022] 1. Manhole cover body; 11. Opening hole;

[0023] 2. Limiting assembly; 21. Support frame; 22. Locking bolt; 23. Positioning cylinder; 24. Positioning rod; 25. Claw pin; 26. Positioning pin; 27. Lifting hole; 28. Ball groove; 29. ​​Limiting ball; 210. Connecting rod; 211. First rubber pad;

[0024] 3. Smoothing assembly; 31. Damping shaft; 32. Positioning block; 33. Support block; 34. Positioning groove; 35. Spring; 36. Extrusion block; 37. Second rubber pad. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example 1

[0027] like Figure 1 As shown;

[0028] A manhole cover opening tooling includes a manhole cover body 1 and two opening holes 11 symmetrically opened inside the manhole cover body 1;

[0029] In this implementation scheme: After checking, the public (announcement) number: CN209872298U discloses a tool for opening a manhole cover. In order to solve the technical problems existing in this prior art, as disclosed in the background technology above, "In these conventional methods, if the angle of the tool is improperly used, resulting in uneven force, there is a risk of damaging the manhole cover, and the manual method of opening the manhole cover is not only inefficient and consumes a lot of physical strength, but also has the risk of pinching fingers and people falling." In terms of combined use, this problem is obviously a real problem that exists and is relatively difficult to solve. In view of this, in order to solve this technical problem, a limit component 2 and a smoothing component 3 are added on this basis.

[0030] More specifically:

[0031] like Figures 1 to 4 As shown;

[0032] Combining the above:

[0033] In order to enable the manhole cover to be opened by a lifting vehicle such as a forklift in the factory area, the manhole cover opening tool also includes a limit assembly 2 arranged above the manhole cover body 1;

[0034] The limiting assembly 2 includes two support frames 21 symmetrically and cross-arranged above the manhole cover body 1. Through holes are respectively opened at the positions where the two support frames 21 cross and overlap each other. Locking bolts 22 are inserted into the two through holes. The two support frames 21 are rotatably connected through the through holes and the locking bolts 22. A positioning cylinder 23 is provided at one end of the two support frames 21 close to the manhole cover body 1. A positioning rod 24 is slidably connected inside the positioning cylinder 23. The end of the positioning rod 24 away from the positioning cylinder 23 passes through the manhole cover body 1 through the cover opening hole 11 and is fixedly connected to a claw pin 25 arranged under the manhole cover body 1. The end of the positioning rod 24 away from the claw pin 25 is fixedly connected to a positioning pin 26.

[0035] The two support frames 21 are moved to the top of the manhole cover body 1, and the two support frames 21 are rotated on the surface of the locking bolts 22 until the two claw pins 25 are perpendicular to the two cover opening holes 11. The nuts on the surface of the locking bolts 22 are rotated to lock the two support frames 21. The positioning rod 24 is rotated ninety degrees inside the positioning cylinder 23 until the direction of the adjusting claw pin 25 is parallel to the cover opening hole 11 in the vertical plane. The claw pin 25 is inserted into the inside of the cover opening hole 11 until it penetrates the manhole cover body 1, and then the claw pin 25 is turned back to its original position through the positioning rod 24. The crane is started, and the two support frames 21 are pulled up by the slings. The claw pin 25 will abut against the bottom surface of the manhole cover body 1 to lift the manhole cover body 1, thus realizing the characteristic that the manhole cover tooling can be opened by a lifting vehicle such as a forklift in the factory area.

[0036] Going further:

[0037] In an optional embodiment, two first rubber pads 211 are symmetrically fixedly connected to the upper surface of each claw pin 25 , and the first rubber pads 211 are in contact with the bottom surface of the manhole cover body 1 .

[0038] In this embodiment: start the crane, pull the two support frames 21 upwards through the slings, and the two first rubber pads 211 will fit together with the bottom surface of the manhole cover body 1, increasing the friction between the claw pin 25 and the manhole cover body 1, reducing the possibility of the manhole cover body 1 slipping and tipping due to shaking during lifting.

[0039] Going further:

[0040] In an optional embodiment, a ball groove 28 is formed on one side of each support frame 21 close to the positioning cylinder 23, and a limiting ball 29 is arranged inside each ball groove 28. The limiting ball 29 is rotatably connected to the support frame 21 through the ball groove 28, and a connecting rod 210 is fixedly connected to the surface of the limiting ball 29. The end of the connecting rod 210 away from the limiting ball 29 is fixedly connected to the corresponding positioning cylinder 23.

[0041] In this embodiment: when the staff adjusts the distance between the two positioning cylinders 23 according to the size of the manhole cover body 1, because the two support frames 21 rotate in a circular arc with the locking bolts 22 as the axis, when a certain distance is adjusted, the two claw pins 25 and the two cover opening holes 11 are not perpendicular to each other, force can be applied to the positioning cylinder 23, so that the positioning cylinder 23 can rotate inside the ball groove 28 through the connecting rod 210 with the limiting ball 29 as the axis, so that the two claw pins 25 and the two cover opening holes 11 can be perpendicular to each other, which is convenient for insertion.

[0042] Going further:

[0043] In an optional embodiment, it further includes a smoothing component 3 disposed on the surface of the support frame 21;

[0044] The smoothing component 3 includes two damping shafts 31 symmetrically arranged on the surface of each support frame 21, and the end of the damping shaft 31 away from the support frame 21 is fixedly connected with a positioning block 32, and the positioning block 32 is rotatably connected to the support frame 21 through the damping shaft 31, and a support block 33 is arranged on the surface of the positioning block 32, and a positioning groove 34 is opened inside the support block 33, and the positioning block 32 is slidingly connected to the support block 33 through the positioning groove 34, and the end of the support block 33 close to the manhole cover body 1 is fixedly connected with an extrusion block 36, and a spring 35 is arranged inside the positioning groove 34, and the two ends of the spring 35 are respectively fixedly connected to the extrusion block 36 and the positioning block 32.

[0045] In this embodiment: after the two claw pins 25 are inserted into the two cover opening holes 11, the two extrusion blocks 36 will fit with the upper surface of the manhole cover body 1. When the manhole cover body 1 is pulled up, the spring 35 will fit the extrusion blocks 36 with the manhole cover body 1 due to elastic potential energy, preventing the manhole cover body 1 from tilting in one direction and injuring the surrounding workers due to the center tilt after being pulled up.

[0046] It should be noted that the damping shaft 31 is mainly composed of a bearing seat, a bearing ball, a ball ring, etc., and friction is generated by the extrusion between the gaskets. The extrusion block 36 is arranged to be parallel to the upper surface of the manhole cover body 1.

[0047] Going further:

[0048] In an optional embodiment, the bottom surface of each extrusion block 36 is fixedly connected to a second rubber pad 37 , and the second rubber pad 37 and the upper surface of the manhole cover body 1 are in contact with each other.

[0049] In this embodiment, the second rubber pad 37 can increase the friction between the extrusion block 36 and the manhole cover body 1 to prevent it from sliding.

[0050] The working principle and use process of the utility model are as follows: when it is necessary to lift the manhole cover body 1, one end of the sling is connected to the two support frames 21 through the lifting hole 27, and then the other end of the sling is connected to the crane, and the two support frames 21 are moved to the top of the manhole cover body 1, and the two support frames 21 are rotated on the surface of the locking bolts 22 until the two claw pins 25 are perpendicular to the two cover opening holes 11, and the nuts on the surface of the locking bolts 22 are rotated to lock the two support frames 21, and then the positioning rod 24 is rotated ninety degrees inside the positioning cylinder 23 until the direction of the adjustment claw pin 25 is parallel to the cover opening hole 11 in the vertical plane, and the claw pin 25 is inserted into the inside of the cover opening hole 11 until it penetrates the manhole cover body 1, and then the claw pin 25 is turned back to its original position through the positioning rod 24, and the crane is started, and the two support frames 21 are pulled up by the sling, and the claw pin 25 will abut against the bottom surface of the manhole cover body 1 to lift the manhole cover body 1, so that the manhole cover tooling can be used with the help of the factory The characteristics of the forklift and other lifting vehicles in the area opening the manhole cover, when the staff adjusts the distance between the two positioning cylinders 23 according to the size of the manhole cover body 1, because the two support frames 21 rotate in an arc with the locking bolts 22 as the axis, when a certain distance is adjusted, the two claw pins 25 and the two cover opening holes 11 are not perpendicular to each other, the positioning cylinder 23 can be applied with force, so that the positioning cylinder 23 rotates inside the ball groove 28 with the limiting ball 29 as the axis through the connecting rod 210, so that the two claw pins 25 and the two cover opening holes 11 can be made perpendicular to each other, which is convenient for insertion. After the two claw pins 25 are inserted into the two cover opening holes 11, the two extrusion blocks 36 will fit with the upper surface of the manhole cover body 1. When the manhole cover body 1 is pulled up, the spring 35 will only fit the extrusion blocks 36 with the manhole cover body 1 due to the elastic potential energy, so as to prevent the manhole cover body 1 from tilting and sliding in one direction due to the center tilt after being pulled up, thereby injuring the surrounding workers.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A manhole cover opening tool, comprising a manhole cover body (1) and two opening holes (11) symmetrically arranged inside the manhole cover body (1), characterized in that: It also includes a limiting component (2) arranged above the manhole cover body (1); The limiting assembly (2) comprises two support frames (21) symmetrically and cross-arranged above the manhole cover body (1), through holes are respectively opened at the positions where the two support frames (21) cross and overlap each other, locking bolts (22) are inserted into the two through holes, and the two support frames (21) are rotatably connected through the through holes and the locking bolts (22), and a positioning cylinder (23) is provided at one end of the two support frames (21) close to the manhole cover body (1), and a positioning rod (24) is slidably connected inside the positioning cylinder (23), and the end of the positioning rod (24) away from the positioning cylinder (23) passes through the manhole cover body (1) through the cover opening hole (11) and is fixedly connected to a claw pin (25) arranged below the manhole cover body (1), and the end of the positioning rod (24) away from the claw pin (25) is fixedly connected to a positioning pin (26).

2. The manhole cover opening tool according to claim 1, characterized in that: Two first rubber pads (211) are symmetrically and fixedly connected to the upper surface of each claw pin (25), and the first rubber pads (211) are in contact with the bottom surface of the manhole cover body (1).

3. The manhole cover opening tool according to claim 1, characterized in that: A ball groove (28) is provided on one side of each support frame (21) close to the positioning cylinder (23), and a limiting ball (29) is arranged inside each ball groove (28). The limiting ball (29) is rotatably connected to the support frame (21) through the ball groove (28), and a connecting rod (210) is fixedly connected to the surface of the limiting ball (29), and one end of the connecting rod (210) away from the limiting ball (29) is fixedly connected to the corresponding positioning cylinder (23).

4. The manhole cover opening tool according to claim 1, characterized in that: A hoisting hole (27) is formed at one end of each support frame (21) away from the positioning tube (23).

5. The manhole cover opening tool according to claim 1, characterized in that: It also includes a smoothing component (3) arranged on the surface of the support frame (21); The smoothing component (3) comprises two damping shafts (31) symmetrically arranged on the surface of each support frame (21); one end of the damping shaft (31) away from the support frame (21) is fixedly connected with a positioning block (32); the positioning block (32) is rotatably connected to the support frame (21) through the damping shaft (31); a support block (33) is arranged on the surface of the positioning block (32); a positioning groove (34) is arranged inside the support block (33); the positioning block (32) is slidably connected to the support block (33) through the positioning groove (34); one end of the support block (33) close to the manhole cover body (1) is fixedly connected with an extrusion block (36); a spring (35) is arranged inside the positioning groove (34); two ends of the spring (35) are respectively fixedly connected to the extrusion block (36) and the positioning block (32).

6. The manhole cover opening tool according to claim 5, characterized in that: The bottom surface of each extrusion block (36) is fixedly connected to a second rubber pad (37), and the second rubber pad (37) and the upper surface of the manhole cover body (1) are in contact with each other.

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