Pedal type opening tool for well lid
By designing a foot-pedal opening tool, using the skid and support block to form a lever, combined with the design of the pulling spring and the round spring, the problem of inconvenience in opening the heavy manhole cover is solved, the labor-saving opening and safe use of the manhole cover is achieved, and the tool is improved versatility and portability.
Patent Information
- Application Number
- CN202420943424.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-04-30
Smart Images
Figure CN222312669U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of road manhole covers, and in particular to a pedal-operated opening tool for manhole covers. Background Art
[0002] Manhole covers are the top closures of deep wells on roads or in homes, used to prevent people or objects from falling and as entrances and exits to underground facilities. Manhole covers are an important part of infrastructure, and they are required wherever public facilities such as tap water, telecommunications, electricity, gas, heat, fire protection, and sanitation are installed. With the development of the economy, the upgrading of infrastructure construction has also driven the development of manhole cover technology.
[0003] The existing manhole cover usually includes a manhole seat and a cover body, wherein the manhole seat is fixed to the ground or a supporting structure, and the cover body is movably covered at the opening on the manhole seat. When the cover body is to be opened, a T-shaped handle is usually used to hook the operating hole on the cover body, and then the cover body is directly lifted manually to open the cover body.
[0004] The manhole covers used in gas stations are usually heavy because they must have a strong load-bearing capacity. Gas stations serve not only small private cars, but also large trucks. In order to ensure safety and prevent the manhole covers from collapsing under heavy pressure, the manhole covers of gas stations are usually designed to be thicker and stronger. This design ensures that even when heavy vehicles frequently pass by, the manhole covers can stably withstand pressure, thus avoiding accidents.
[0005] The heavy manhole cover makes it difficult for the staff to open it easily, especially the manhole cover with a sealing structure. The friction resistance between the edge of the cover and the well seat is relatively large. It is difficult for an ordinary adult male to directly open the cover with the above-mentioned handle, which is very inconvenient. Utility Model Content
[0006] In order to solve the problem that the manhole cover is inconvenient to open due to the heavy cover body, the present application provides a foot-operated opening tool for the manhole cover.
[0007] The present application provides a pedal-operated opening tool for a manhole cover adopts the following technical solution:
[0008] A pedal-operated opening tool for a manhole cover comprises a lifting rod and a prying plate; a prying block cooperating with an operating hole on a cover body is arranged at the lower end of the lifting rod; the front end of the prying plate and the lower end of the lifting rod are hinged to each other; a supporting block is arranged at the middle lower end of the prying plate, and when the prying block enters the operating hole, the prying plate can be lowered to make the supporting block abut against the manhole seat; a tension spring is connected between the lifting rod and the prying plate.
[0009] By adopting the above technical solution, when the opening tool is not in use, the lifting rod and the pry plate can be rotated and closed, which is convenient for hand-held carrying; when the opening tool is needed to open the manhole cover, the pry block at the end of the lifting rod is first inserted into the operating hole and rotated to complete the locking, and then the pry plate is lowered to make the support block abut against the manhole seat, and the end of the pry plate away from the manhole cover will be tilted to form a lever. At this time, this end can be stepped on to lift the manhole cover body through the pry block, which is labor-saving and convenient; and the tension spring can slow down the speed and force of the pry plate being lowered to prevent feet from being hit, thereby increasing the safety of use.
[0010] Optionally, two ends of the tension spring are respectively connected to side walls of the pry plate and the lifting rod that are opposite to each other; when the lifting rod is rotated to fit with the pry plate, the tension spring is in a stretched state.
[0011] By adopting the above technical solution, the pry plate and the lifting rod will not be separated at will after being closed, especially they can be kept in the closed state when laid flat on the side, which is convenient for storage and carrying.
[0012] Optionally, a clearance groove is provided on the upper end surface of the pry plate, and one end of the tension spring connected to the pry plate is connected in the clearance groove; when the lifting rod is rotated to fit with the pry plate, the tension spring is located in the clearance groove as a whole.
[0013] By adopting the above technical solution, the pry plate and the lifting rod will not be hindered by the volume of the tension spring when closing, so that the two are more closely fitted, and the overall volume of the opening tool after closing is reduced.
[0014] Optionally, guard plates are provided on both sides of the end surface of the pry plate facing the lifting rod, and when the lifting rod is rotated to fit with the pry plate, the lifting rod is located between the guard plates on both sides.
[0015] By adopting the technical solution, the guard plates on both sides are used to limit and protect the lifting rod after closing.
[0016] Optionally, a circular retaining spring is arranged at the upper end of the pry plate between the two side guard plates, the opening of the circular retaining spring faces one side of the lifting rod, and the opening width is smaller than the diameter of the lifting rod.
[0017] By adopting the above technical solution, the lifting rod is fixed on the pry plate by means of a circular retaining spring for limiting the position, and it is also effortless to open the lifting rod, thereby further increasing the convenience of storage and carrying.
[0018] Optionally, an extension column is provided at the lower end of the lifting rod, and the pry block is provided at the lower end of the extension column; the extension column is rotatably connected to the lifting rod around its own axis, and the lower end of the lifting rod is detachably connected with a locking pin for limiting the rotation of the extension column; two groups of locking holes for inserting the locking pins are provided on the extension column at 90 degree intervals in the circumferential direction.
[0019] By adopting the above technical solution, the angle orientation of the pry block is adjusted according to the different orientations of the operating holes on different manhole covers, thereby greatly increasing the universal adaptability of the opening tool.
[0020] Optionally, the bottom of the pry plate is provided with a plurality of threaded holes at intervals along its length direction; the upper end of the support block is provided with a threaded rod that cooperates with the threaded holes; the threaded rod cooperates with the threaded holes to enable a detachable connection between the support block and the pry plate.
[0021] By adopting the above technical solution, the interval between the support block and the skid block is adjusted according to the different positions of the operating holes on different manhole covers (different spacings from the manhole seats), thereby further increasing the universal adaptability of the opening tool.
[0022] Optionally, an anti-skid pedal is provided at the end of the pry plate away from the hinge of the lifting rod.
[0023] By adopting the above technical solution, it is convenient to use in rainy weather or humid environment, reducing the risk of the operator slipping.
[0024] In summary, the present application includes at least one of the following beneficial technical effects:
[0025] 1. When the opening tool is not in use, the lifting rod and the pry plate can be rotated and closed, which is convenient for hand-held carrying; when the opening tool is needed to open the manhole cover, first insert the pry block at the end of the lifting rod into the operating hole and rotate it to complete the locking, then put down the pry plate to make the support block abut against the manhole seat, and the end of the pry plate away from the manhole cover will be tilted to form a lever. At this time, stepping down this end can lift the manhole cover body through the pry block, which is labor-saving and convenient; and the speed and force of the pry plate being lowered can be slowed down by the tension spring to prevent feet from being hit, thereby increasing the safety of use;
[0026] 2. The lifting rod is fixed on the pry plate with a circular retaining spring to limit the position, and it is also effortless to open the lifting rod, which further increases the convenience of storage and carrying;
[0027] 3. According to the different directions of the operating holes on different manhole covers, the angle direction of the skid can be adjusted, and according to the different positions of the operating holes on different manhole covers (different spacing from the well seat), the interval between the support block and the skid can be adjusted, thereby greatly increasing the universal adaptability of the opening tool. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.
[0029] Figure 2 It is a partial cross-sectional schematic diagram of the pry plate in the embodiment of the present application, used to show structures such as the tension spring and the support block.
[0030] Figure 3It is a schematic diagram of the partial structure of the pry plate in the embodiment of the present application, which is used to show the structures such as the circular retaining spring, the guard plate and the pedal.
[0031] Figure 4 It is a schematic diagram of the installation structure of the extension column and the lifting rod in the embodiment of the present application.
[0032] Description of reference numerals:
[0033] 1. Lifting rod; 11. Handle; 12. Connecting port; 13. Perforation; 14. Locking pin; 2. Extension column; 21. Pry block; 23. Locking hole; 3. Pry plate; 31. Support block; 311. Threaded rod; 312. Threaded hole; 32. Guard plate; 33. Circular retaining ring; 34. Giving way groove; 35. Anti-slip pedal; 4. Tension spring. DETAILED DESCRIPTION
[0034] The following is combined with Figure 1-4 This application is described in further detail.
[0035] The present application embodiment discloses a pedal-operated opening tool for a manhole cover. Figure 1 The pedal-operated opening tool includes a lifting rod 1 and a prying plate 3. The upper end of the lifting rod 1 is fixedly connected with a handle 11 for easy lifting and gripping, and the lower end is installed with an extension column 2. The extension column 2 and the axis of the lifting rod 1 intersect at an acute angle of 15 to 30 degrees; a prying block 21 is welded to the bottom of the extension column 2, and the prying block 21 extends to both sides along the radial direction of the extension column 2, and the width of both ends of the prying block 21 is greater than the diameter of the extension column 2. When the prying block 21 enters the waist-shaped operating hole on the manhole cover with the extension column 2, the lifting rod 1 is rotated so that the extension column 2 drives the prying block 21 to rotate 90 degrees, and the prying block 21 can be limited in the operating hole, and the lifting rod 1 can be lifted upward to apply an upward pulling force to the manhole cover.
[0036] Reference Figure 1 , Figure 2 The front end of the pry plate 3 is hinged to the lower end of the lifting rod 1, and the hinge position is close to the top of the extension column 2; the extension lines of the handle 11, the extension column 2 and the pry plate 3 are located in the same plane. The middle lower end of the pry plate 3 is fixedly connected to a support block 31, and the end of the pry plate 3 away from the hinge of the lifting rod 1 is welded with an anti-skid pedal 35. When the pry block 21 enters the operating hole and is limited, lowering the pry plate 3 can make the support block 31 abut against the upper end of the well seat. At this time, the foot-operated opening tool forms a lever. By stepping on this end of the anti-skid pedal 35, the manhole cover can be lifted through the pry block 21, which is labor-saving and convenient.
[0037] Reference Figure 1 , Figure 2A tension spring 4 is connected between the lifting rod 1 and the pry plate 3, and the two ends of the tension spring 4 are respectively connected to the side walls of the pry plate 3 and the lifting rod 1. During the relative rotation of the lifting rod 1 and the pry plate 3 and when the lifting rod 1 rotates to fit the pry plate 3, the tension spring 4 remains in a stretched state. The tension spring 4 can slow down the speed and force of lowering the pry plate 3 to prevent feet from being hit, increase the safety of use, and the pry plate 3 and the lifting rod 1 will not separate at will after closing, especially when they are laid flat on the side, they can remain in a closed state, which is convenient for storage and carrying.
[0038] Reference Figure 1 , Figure 2 The upper end surface of the pry plate 3 is provided with a clearance groove 34, and one end of the tension spring 4 connected to the pry plate 3 is connected in the clearance groove 34. When the lifting rod 1 is rotated to fit with the pry plate 3, the tension spring 4 is located in the clearance groove 34 as a whole, so that the pry plate 3 and the lifting rod 1 will not be hindered by the volume of the tension spring 4 when closing, so that the two are more closely fitted, reducing the overall volume of the foot-operated opening tool after closing.
[0039] Reference Figure 1 , Figure 3 The two sides of the end surface of the pry plate 3 facing the lifting rod 1 are integrally formed with guard plates 32. When the lifting rod 1 is rotated to fit with the pry plate 3, the lifting rod 1 is located between the guard plates 32 on both sides, and the guard plates 32 on both sides are used to limit and protect the closed lifting rod 1. A circular circlip 33 is fixedly connected between the guard plates 32 on both sides at the upper end of the pry plate 3. The opening of the circular circlip 33 faces one side of the lifting rod 1, and the opening width is smaller than the diameter of the lifting rod 1. The circular circlip 33 is used to fix the lifting rod 1 on the pry plate 3 for limiting, and it is also effortless to open the lifting rod 1, which further increases the convenience of storage and carrying.
[0040] Reference Figure 1 , Figure 4 In order to increase the universal adaptability of the pedal-operated opening tool, a detachable threaded connection is adopted between the extension column 2 and the lifting rod 1, so that the extension column 2 can rotate around its own axis, so that the angle direction of the pry block 21 can be adjusted according to the different directions of the operating holes on different manhole covers. Specifically, a connection port 12 with an internal thread is provided at the bottom of the lifting rod 1, and a matching external thread is provided at the upper end of the extension column 2. A through hole 13 penetrating into the connection port 12 is provided on the outer wall of the lower end of the lifting rod 1, and a pluggable locking pin 14 is inserted in the through hole 13, and the threaded part of the extension column 2 is provided with two locking holes 23 for the locking pin 14 to be inserted and limited. The two locking holes 23 are arranged along the direction of the external thread and are arranged 90 degrees apart in the circumferential direction of the extension column 2. The angle can be adjusted in other embodiments. This solution is mainly adapted to two operating holes in vertical directions.
[0041] Reference Figure 1 , Figure 2In order to increase the universal adaptability of the pedal-operated opening tool, the support block 31 and the pry plate 3 are connected by a detachable threaded connection. Specifically, the bottom of the pry plate 3 is provided with a plurality of threaded holes 312 spaced apart along its length direction, and in this embodiment, there are 8 threaded holes 312; and the upper end of the support block 31 is welded with a threaded rod 311 that matches the threaded hole 312, so that the spacing between the support block 31 and the pry block 21 can be adjusted according to the different positions of the operating holes on different manhole covers (different spacing from the manhole seat).
[0042] The implementation principle of a pedal-operated opening tool for a manhole cover in the embodiment of the present application is as follows:
[0043] When the foot-operated opening tool is not in use, the lifting rod 1 and the pry plate 3 can be rotated and closed, which is convenient for hand-held carrying; when the foot-operated opening tool is needed to open the manhole cover, the pry block 21 at the end of the lifting rod 1 is first inserted into the operating hole and rotated to complete the locking, and then the pry plate 3 is lowered to make the support block 31 abut against the manhole seat, and the end of the pry plate 3 away from the manhole cover will be tilted to form a lever, at this time, the end of the anti-slip pedal 35 is stepped on, and the manhole cover body can be lifted by the pry block 21, which is labor-saving and convenient; and the tension spring 4 can slow down the speed and force of the pry plate 3 being lowered to prevent feet from being hit, thereby increasing the safety of use.
[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A pedal-operated opening tool for a manhole cover, characterized in that: The utility model comprises a lifting rod (1) and a prying plate (3); the lower end of the lifting rod (1) is provided with a prying block (21) which cooperates with the operating hole on the cover body; the front end of the prying plate (3) and the lower end of the lifting rod (1) are hinged to each other; the middle lower end of the prying plate (3) is provided with a supporting block (31); when the prying block (21) enters the operating hole, the prying plate (3) is lowered so that the supporting block (31) can abut against the well seat; the lifting rod (1) and the prying plate (3) are connected with a A tension spring (4); an extension column (2) is arranged at the lower end of the lifting rod (1), and the pry block (21) is arranged at the lower end of the extension column (2); the extension column (2) is rotatably connected to the lifting rod (1) around its own axis, and the lower end of the lifting rod (1) is detachably connected with a locking pin (14) for limiting the rotation of the extension column (2); two groups of locking holes (23) for inserting the locking pins (14) are arranged on the extension column (2) at 90 degree intervals along the circumferential direction.
2. The pedal-operated opening tool for a manhole cover according to claim 1, characterized in that: The two ends of the tension spring (4) are respectively connected to the side walls of the pry plate (3) and the lifting rod (1) opposite to each other; when the lifting rod (1) is rotated to fit with the pry plate (3), the tension spring (4) is in a stretched state.
3. The pedal-operated opening tool for a manhole cover according to claim 2, characterized in that: The upper end surface of the pry plate (3) is provided with a clearance groove (34), and one end of the tension spring (4) connected to the pry plate (3) is connected in the clearance groove (34); when the lifting rod (1) is rotated to fit with the pry plate (3), the tension spring (4) is located in the clearance groove (34) as a whole.
4. The pedal-operated opening tool for a manhole cover according to claim 1, characterized in that: Guard plates (32) are arranged on both sides of the end surface of the pry plate (3) facing the lifting rod (1); when the lifting rod (1) is rotated to fit with the pry plate (3), the lifting rod (1) is located between the guard plates (32) on both sides.
5. The pedal-operated opening tool for a manhole cover according to claim 4, characterized in that: A circular retaining spring (33) is arranged at the upper end of the pry plate (3) between the two side guard plates (32); the opening of the circular retaining spring (33) faces one side of the lifting rod (1), and the opening width is smaller than the diameter of the lifting rod (1).
6. The pedal-operated opening tool for a manhole cover according to claim 1, characterized in that: The bottom of the pry plate (3) is provided with a plurality of threaded holes (312) at intervals along its length direction; the upper end of the support block (31) is provided with a threaded rod (311) that cooperates with the threaded holes (312); the threaded rod (311) cooperates with the threaded holes (312) to enable the support block (31) and the pry plate (3) to be detachably connected.
7. The pedal-operated opening tool for a manhole cover according to claim 1, characterized in that: An anti-skid pedal (35) is provided at the end of the pry plate (3) away from the hinged portion of the lifting rod (1).