Well opening device capable of improving well lid opening efficiency

Abstract

The well opening device capable of improving the well lid opening efficiency comprises a force arm rod assembly, and the force arm rod assembly comprises a force arm rod base, a force arm ejector rod movably arranged at the top end of the force arm rod base and a force arm grip fixed to the top end of the force arm ejector rod. The fixing plate is fixed to the bottom end of the force arm rod seat, the connecting rod seat is fixedly installed on the right side of the fixing plate, the movable rod is movably installed at the right end of the connecting rod seat, and the supporting arm is fixedly connected to the bottom of the movable rod. Through the design of a mechanical structure, the risk that the well lid is directly operated by manpower is reduced, damage caused by sudden looseness of the well lid or breakage of a tool is reduced, the diversity of well lid specifications is considered in the design of the device, the universality and adaptability of the tool are improved through adjustable components, the mechanical principle is utilized, and the production efficiency is improved. According to the manhole cover opening device, the strength and time required for opening the manhole cover are reduced, particularly in emergency, the manhole cover can be quickly opened and placed, and the overall operation efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of manhole cover opening technology, specifically relating to a manhole opening device that can improve the efficiency of opening manhole covers. Background Technology

[0002] In current municipal maintenance, power line repair, and communication line laying operations, manhole cover hooks are widely used as the primary tool for opening, moving, or temporarily securing manhole covers. However, their technical limitations are becoming increasingly apparent. With the acceleration of urbanization and the increasing complexity of infrastructure, traditional manhole cover hooks have revealed the following significant problems when dealing with diverse and demanding operating environments:

[0003] 1. Safety issues: Traditional manhole cover hooks mainly rely on manual operation, which poses many safety hazards. On the one hand, the manhole cover may suddenly loosen due to rust, jamming, or other reasons during the opening process, causing the operator to fall or be injured. On the other hand, some hooks are designed with insufficient strength and cannot withstand the weight of oversized or severely rusted manhole covers, posing a risk of breakage and further exacerbating the danger of the operation.

[0004] 2. Limited adaptability: The lack of uniformity in manhole cover specifications is a key factor restricting the universality of traditional tools. Manhole covers of different regions and for different purposes differ in size and shape, making it difficult for traditional hooks to achieve "one tool for multiple uses". This increases the complexity of carrying and replacing tools and reduces work efficiency.

[0005] 3. Inefficiency: When using manual tools to open manhole covers, operators often need to apply considerable force, and the process is time-consuming and labor-intensive. Especially in emergency repairs or large-scale operations, this inefficient operation method seriously restricts the overall work progress and increases labor and time costs.

[0006] Therefore, this utility model proposes a well-opening device that can improve the efficiency of opening well covers. Utility Model Content

[0007] The purpose of this invention is to provide a well-opening device that can improve the efficiency of opening well covers, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a well-opening device that can improve the efficiency of opening well covers, comprising...

[0009] A lever arm assembly, comprising a lever arm seat, a lever arm top rod movably disposed at the top of the lever arm seat, and a lever arm handle fixed to the top of the lever arm top rod;

[0010] And a fixed plate fixed to the bottom of the lever arm seat, a connecting rod seat fixedly installed on the right side of the fixed plate, a movable rod movably installed on the right end of the connecting rod seat, a support arm fixedly connected to the bottom of the movable rod, two pulleys rotatably installed on both sides of the support arm via a rotating shaft, and a pedal fixed to the right end of the support arm;

[0011] And a handle fixed to the left side surface of the lever arm seat, a U-shaped pendant mounted on the handle surface, a hanging chain connected to the bottom of the U-shaped pendant, and a pin hook connected to the bottom of the hanging chain.

[0012] Preferably, multiple adjustment holes 2 are provided through the two ends of the U-shaped pendant, and multiple adjustment holes 1 corresponding to the adjustment holes 2 are provided through the surface of the handle. An adjustment bolt is provided through the U-shaped pendant and the handle, and the adjustment bolt passes through both the adjustment holes 1 and the adjustment holes 2.

[0013] Preferably, two triangular reinforcing plates are also fixed between the handle and the lever arm seat.

[0014] Preferably, the bottom end of the lever arm rod is movably inserted into the inner side of the lever arm seat, and an adjustment component is provided between the lever arm rod and the lever arm seat.

[0015] Preferably, the adjusting assembly includes a lever bolt, a wing nut, and bolt holes. The surface of the lever rod has multiple bolt holes corresponding to the lever bolt. The rear end of the lever bolt is attached to the rear surface of the lever rod seat, and the front end of the lever bolt passes through the lever rod seat and through one of the bolt holes to the front surface of the lever rod seat. The wing nut is threaded onto the front end surface of the lever bolt and is in close contact with the lever rod seat.

[0016] Preferably, the left end of the movable rod is movably inserted into the inner side of the connecting rod seat, and a plug-in adjustment mechanism is provided between the movable rod and the connecting rod seat.

[0017] Preferably, the plug-in adjustment mechanism includes a T-shaped plug, a cylindrical insertion hole, and a circular external insertion hole. The surface of the movable rod is provided with multiple cylindrical insertion holes corresponding to the T-shaped plug. The front and rear surfaces of the connecting rod seat are provided with circular external insertion holes for inserting the T-shaped plug. The front end of the T-shaped plug fits against the front surface of the connecting rod seat, and the rear end of the T-shaped plug extends through the circular external insertion hole and one of the cylindrical insertion holes to the rear surface of the connecting rod seat.

[0018] Preferably, an inner groove is provided inside one side of the T-shaped insert, and a spring and a telescopic locking bead are installed in the inner groove. An annular groove corresponding to the telescopic locking bead is provided on the inner wall of the cylindrical insertion hole.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. Enhanced safety: The mechanical structure design reduces the risk of direct manual operation of the manhole cover and lowers the risk of injury caused by sudden loosening of the manhole cover or tool breakage.

[0021] 2. Enhanced adaptability: The device design takes into account the diversity of manhole cover specifications, and the adjustable components improve the versatility and adaptability of the tool.

[0022] 3. Improved efficiency: By utilizing the principles of mechanics, the force and time required to open the manhole cover are reduced. Especially in emergency situations, the manhole cover can be opened and placed quickly, improving overall operational efficiency.

[0023] 4. Cost-effectiveness: This solution has low production costs, a compact overall structure, and is easy to carry and store, which is conducive to the miniaturization and popularization of equipment. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This utility model Figure 1 A magnified view of a portion of region A in the middle;

[0026] Figure 3 This utility model Figure 1 A magnified view of a portion of region B in the middle;

[0027] Figure 4 This utility model Figure 1 A magnified view of a portion of region C in the middle;

[0028] Figure 5 This is a top sectional view of the plug-in adjustment mechanism of this utility model;

[0029] In the diagram: 11. Lever arm seat; 12. Lever arm top rod; 13. Adjustment assembly; 131. Lever arm bolt; 132. Wing nut; 133. Bolt hole; 14. Lever arm handle; 2. Fixing plate; 31. Connecting rod seat; 32. Movable rod; 33. Support arm; 34. Pedal; 35. Pulley; 36. Plug-in adjustment mechanism; 361. T-shaped insert; 362. Cylindrical insertion hole; 363. Circular outer insertion hole; 364. Inner groove; 365. Spring; 366. Telescopic locking bead; 367. Annular groove; 4. Handle; 41. Adjustment hole one; 5. U-shaped hanging piece; 51. Adjustment hole two; 52. Adjustment bolt; 6. Hanging chain; 7. Pin hook. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example

[0032] Please see Figures 1 to 5 This is an embodiment of the present utility model, which provides a technical solution: a well-opening device that can improve the efficiency of opening well covers, comprising...

[0033] The lever arm assembly includes a lever arm seat 11, a lever arm top rod 12 movably disposed at the top of the lever arm seat 11, and a lever arm handle 14 fixed to the top of the lever arm top rod 12.

[0034] And a fixed plate 2 fixed to the bottom of the lever arm seat 11, a connecting rod seat 31 fixedly installed on the right side of the fixed plate 2, a movable rod 32 movably installed on the right end of the connecting rod seat 31, a support arm 33 fixedly connected to the bottom of the movable rod 32, two pulleys 35 rotatably installed on both sides of the support arm 33 via a rotating shaft, and a pedal 34 fixed to the right end of the support arm 33.

[0035] The handle 4 is fixed to the left side surface of the lever arm seat 11, the U-shaped pendant 5 is installed on the surface of the handle 4, the hanging chain 6 is connected to the bottom of the U-shaped pendant 5, and the pin hook 7 is connected to the bottom of the hanging chain 6.

[0036] In this embodiment, preferably, multiple adjustment holes 51 are provided through both ends of the U-shaped hanger 5, and multiple adjustment holes 41 corresponding to the adjustment holes 51 are provided through the surface of the handle 4. An adjustment bolt 52 is provided through the U-shaped hanger 5 and the handle 4. The adjustment bolt 52 passes through both the adjustment holes 41 and the adjustment holes 51 to achieve stable fixation of the U-shaped hanger 5 and the handle 4. At the same time, the adjustment bolt 52 can be passed through other adjustment holes 41 and adjustment holes 51 to adaptively adjust the position and height of the U-shaped hanger 5, so that the pin hook 7 below the hanging chain 6 can be adapted to the holes on the manhole covers of different specifications, increasing the versatility of the entire device.

[0037] In this embodiment, preferably, two triangular reinforcing plates are welded and fixed between the handle 4 and the lever arm seat 11, which can increase the fixing strength between the handle 4 and the lever arm seat 11 and play a role in reinforcing and supporting.

[0038] In this embodiment, preferably, the bottom end of the lever arm jack 12 is movably inserted into the inner side of the lever arm seat 11, and an adjustment component 13 is provided between the lever arm jack 12 and the lever arm seat 11.

[0039] In this embodiment, preferably, the adjusting component 13 includes a lever bolt 131, a wing nut 132, and bolt holes 133. Multiple bolt holes 133 corresponding to the lever bolt 131 are formed through the surface of the lever rod 12. The rear end of the lever bolt 131 is attached to the rear surface of the lever rod seat 11, and the front end of the lever bolt 131 passes through the lever rod seat 11 and through one of the bolt holes 133 to the front surface of the lever rod seat 11. The wing nut 132 is threaded onto the front end surface of the lever bolt 131 and is tightly fitted to the lever rod seat 11, achieving stable fixation of the lever rod 12 and the lever rod seat 11 during daily use. When the length of the entire lever rod assembly needs to be adjusted later, the wing nut is first... Unscrew nut 132, then pull out lever arm bolt 131 from the rear of lever arm seat 11 to release the limit on lever arm top rod 12. At this time, the lever arm top rod 12 can be slid up and down to adjust its height. After adjusting to the appropriate position, pass lever arm bolt 131 through lever arm seat 11 and lever arm top rod 12 from the rear of lever arm seat 11, so that lever arm bolt 131 can pass through bolt hole 133 in other positions. Then put wing nut 132 on the front end surface of lever arm bolt 131 and rotate to tighten it. This completes the re-fixation of lever arm top rod 12 and lever arm seat 11 after adjustment, so that the length of the entire lever arm assembly can be adaptively extended and retracted according to actual usage requirements.

[0040] In this embodiment, preferably, the left end of the movable rod 32 is movably inserted into the inner side of the connecting rod seat 31, and a plug-in adjustment mechanism 36 is provided between the movable rod 32 and the connecting rod seat 31.

[0041] In this embodiment, preferably, the plug-in adjustment mechanism 36 includes a T-shaped plug 361, a cylindrical insertion hole 362, and a circular external insertion hole 363. The surface of the movable rod 32 is provided with a plurality of cylindrical insertion holes 362 corresponding to the T-shaped plug 361. The front and rear surfaces of the connecting rod seat 31 are provided with circular external insertion holes 363 for the T-shaped plug 361 to be inserted. The front end of the T-shaped plug 361 is attached to the front surface of the connecting rod seat 31, and the rear end of the T-shaped plug 361 extends through the circular external insertion hole 363 and one of the cylindrical insertion holes 362 to the rear surface of the connecting rod seat 31. At this time, the T-shaped plug 361 can complete the plug-in limit between the movable rod 32 and the connecting rod seat 31, ensuring the connection stability during daily use.

[0042] In this embodiment, preferably, an inner groove 364 is formed inside one side of the T-shaped insert 361. A spring 365 and a telescopic locking bead 366 are installed inside the inner groove 364. An annular groove 367 corresponding to the telescopic locking bead 366 is formed on the inner wall of the cylindrical insertion hole 362. When the T-shaped insert 361 penetrates the cylindrical insertion hole 362, the end of the telescopic locking bead 366 will be pushed into the annular groove 367 by the spring 365, thus achieving locking and limiting after the T-shaped insert 361 penetrates, ensuring that the T-shaped insert 361 will not fall off on its own. When subsequent telescopic adjustment of the movable rod 32 is required, simply pull the front end of the T-shaped insert 361 forward forcefully, causing the end of the telescopic locking bead 366 to... When the part is squeezed and pushed into the inner groove 364, the T-shaped insert 361 can be pulled out directly. At this time, the movable rod 32 can be extended and slid to change the position of the pedal 34 and the pulley 35 to adapt to different sizes of manhole covers. After the extension and retraction adjustment of the movable rod 32 is completed, the T-shaped insert 361 is inserted into the circular outer insertion hole 363 again, so that the T-shaped insert 361 can pass through the cylindrical insertion hole 362 in other positions, and the end of the telescopic locking ball 366 is pushed into the annular locking groove 367 by the spring 365, thus completing the locking and limiting after the T-shaped insert 361 passes through, thereby quickly connecting and limiting the movable rod 32 and the connecting rod seat 31, which is highly convenient for adjustment.

[0043] In summary, when using this device, first place it above the manhole cover that needs to be opened and adjust its position so that the pin hook 7 can be hooked into the hole on the manhole cover and the connecting rod seat 31 is attached to the top surface of the manhole cover. Then, hold the lever handle 14 and press the lever rod 12 and lever rod seat 11 towards the connecting rod seat 31 so that the pulley 35 rolls into contact with the ground. At this time, continue to apply force and step on the pedal 34. The lever principle will apply an upward force to the pin hook 7 and directly lift the manhole cover. At the same time, the pin hook 7 can hook the lifted manhole cover, reducing the risk of direct manual operation of the manhole cover, reducing the injury caused by sudden loosening of the manhole cover or tool breakage, and significantly improving the overall opening efficiency and saving more effort.

[0044] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A well-opening device that can improve the efficiency of opening well covers, characterized in that: include The lever arm assembly includes a lever arm seat (11), a lever arm top rod (12) movably disposed at the top of the lever arm seat (11), and a lever arm handle (14) fixed at the top of the lever arm top rod (12). And a fixed plate (2) fixed to the bottom of the lever arm seat (11), a connecting rod seat (31) fixedly installed on the right side of the fixed plate (2), a movable rod (32) movably installed on the right end of the connecting rod seat (31), a support arm (33) fixedly connected to the bottom of the movable rod (32), two pulleys (35) rotatably installed on both sides of the support arm (33) via a rotating shaft, and a pedal (34) fixed to the right end of the support arm (33); The handle (4) is fixed to the left side surface of the lever arm seat (11), the U-shaped pendant (5) is installed on the surface of the handle (4), the hanging chain (6) is connected to the bottom of the U-shaped pendant (5), and the pin hook (7) is connected to the bottom of the hanging chain (6).

2. The well-opening device for improving the efficiency of opening well covers according to claim 1, characterized in that: Multiple adjustment holes (51) are provided through both ends of the U-shaped pendant (5). Multiple adjustment holes (41) corresponding to the adjustment holes (51) are provided through the surface of the handle (4). An adjustment bolt (52) is provided through the U-shaped pendant (5) and the handle (4). The adjustment bolt (52) passes through both the adjustment hole (41) and the adjustment hole (51).

3. The well-opening device for improving the efficiency of opening well covers according to claim 1, characterized in that: Two triangular reinforcing plates are also fixed between the handle (4) and the lever arm seat (11).

4. The well-opening device for improving the efficiency of opening well covers according to claim 1, characterized in that: The bottom end of the lever arm top rod (12) is movably inserted into the inner side of the lever arm seat (11), and an adjustment component (13) is provided between the lever arm top rod (12) and the lever arm seat (11).

5. A well-opening device for improving the efficiency of opening well covers according to claim 4, characterized in that: The adjusting assembly (13) includes a lever bolt (131), a wing nut (132), and bolt holes (133). The surface of the lever rod (12) is provided with multiple bolt holes (133) corresponding to the lever bolt (131). The rear end of the lever bolt (131) is attached to the rear surface of the lever rod seat (11), and the front end of the lever bolt (131) passes through the lever rod seat (11) and through one of the bolt holes (133) to the front surface of the lever rod seat (11). The wing nut (132) is threaded on the front end surface of the lever bolt (131) and is in close contact with the lever rod seat (11).

6. The well-opening device for improving the efficiency of opening well covers according to claim 1, characterized in that: The left end of the movable rod (32) is movably inserted into the inner side of the connecting rod seat (31), and a plug-in adjustment mechanism (36) is provided between the movable rod (32) and the connecting rod seat (31).

7. A well-opening device for improving the efficiency of opening well covers according to claim 6, characterized in that: The plug-in adjustment mechanism (36) includes a T-shaped plug (361), a cylindrical plug hole (362), and a circular external plug hole (363). The surface of the movable rod (32) is provided with a plurality of cylindrical plug holes (362) corresponding to the T-shaped plug (361). The front and rear surfaces of the connecting rod seat (31) are provided with circular external plug holes (363) for the T-shaped plug (361) to be inserted. The front end of the T-shaped plug (361) is attached to the front surface of the connecting rod seat (31). The rear end of the T-shaped plug (361) extends through the circular external plug hole (363) and one of the cylindrical plug holes (362) to the rear surface of the connecting rod seat (31).

8. A well-opening device for improving the efficiency of opening well covers according to claim 7, characterized in that: The T-shaped insert (361) has an inner groove (364) on one side, and a spring (365) and a telescopic locking bead (366) are installed in the inner groove (364). The inner wall of the cylindrical insertion hole (362) has an annular groove (367) corresponding to the telescopic locking bead (366).

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