Lifting lever type manhole cover opening device

Abstract

The utility model provides a lifting lever type manhole cover opening device relates to municipal works technical field, including cross rod, the downside of cross rod is provided with lifting lever type manhole cover opening subassembly, lifting lever type manhole cover opening subassembly includes the inner recessed slide groove of setting in the inside of cross rod, the inside of inner recessed slide groove all installs hydraulic pressure adjusting sliding block, the downside of hydraulic pressure adjusting sliding block installs hydraulic pressure rod, the outside of cross rod all is provided with lifting lever sliding frame, the downside of driven rotating shaft is welded with pull -out rod, the end of pull -out rod installs manhole cover clamping plate, put two groups of hydraulic cylinder to the both sides of manhole cover, the hydraulic cylinder starts to fill liquid at this moment, promotes the ascending of hydraulic pressure rod, drives lifting lever sliding frame to ascend, like this can realize the lifting lever type stress of manhole cover, reaches the opening effect, and lifting lever sliding frame can be according to the width of manhole cover and along cross rod left and right horizontal displacement to can be clamped to the cross bar of manhole cover, ensure that the stress of manhole cover is even in the opening process, avoid the damage of single point stress too big.

Description

Technical Field

[0001] This utility model relates to the field of municipal engineering technology, and in particular to a lever-type manhole cover opening device. Background Technology

[0002] Manhole covers are facilities used to cover the openings of wells in public places such as roads and streets. They are mostly round or square and made of materials such as cast iron, cement, and composite materials. They can ensure the safety of pedestrians and vehicles, prevent people from falling and objects from falling into the wells, and facilitate the inspection and maintenance of underground pipelines, cables and other facilities. They are an important part of urban infrastructure.

[0003] A search revealed that the document with publication number "CN218909794U" states that "this utility model provides a manhole cover opening device, including an equipment mounting platform, a battery box, a hydraulic system device, and a control switch; the equipment mounting platform includes a mounting plate; the hydraulic system device includes a hydraulic cylinder, an oil tank, a hydraulic pump, and a hydraulic motor, with the hydraulic pump and hydraulic motor securely connected; the oil tank, hydraulic motor, control switch, and battery box are all securely mounted on the top of the mounting plate; the hydraulic cylinder is securely mounted on the bottom of the mounting plate, and an electromagnet is installed at the bottom of the hydraulic cylinder; an electromagnetic reversing valve is provided at the outlet of the oil tank, and the oil tank is connected to the hydraulic pump and hydraulic cylinder respectively through the electromagnetic reversing valve; the electromagnet and the electromagnetic reversing valve are both connected to the control switch." In use, this utility model achieves rapid lifting of the manhole cover by controlling the hydraulic system device. It is simple to operate, and its simple structure makes it easy to transport and move, allowing for single-person operation, reducing labor intensity, saving labor costs, and improving the efficiency of opening manhole covers.

[0004] However, traditional manhole cover opening operations often require multiple people to work together and use tools such as crowbars to open the manhole cover. This method requires coordination among multiple people and is relatively slow. Furthermore, existing manhole cover opening auxiliary equipment is not very adaptable to different sizes of manhole covers and often requires additional adjustments, which increases the complexity and time cost of the operation.

[0005] Therefore, we provide a lever-type manhole cover opening device to solve the above problems. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a lever-type manhole cover opening device.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A lever-type manhole cover opening device includes a crossbar with a reinforcing rib on its upper side and a lifting handle installed in the middle of the outer side of the crossbar. A lever-type manhole cover opening assembly is located on the lower side of the crossbar. The assembly includes a concave groove on the inner side of the crossbar, with a hydraulic adjusting slider installed on the inner side of each groove. A hydraulic rod is installed on the lower side of each adjusting slider. A lever-type slide is located on the outer side of the crossbar. A constraint clamp is welded to the lower inner end of the lever-type slide. A rotating plug is installed on the inner side of the constraint clamp. A connecting rod is welded to the lower side of the rotating plug. A connecting shaft is welded to the lower side of the connecting rod. A driven shaft is installed on the lower outer end of the connecting shaft. A lifting rod is welded to the lower side of the driven shaft. A manhole cover clamping plate is installed at the end of the lifting rod.

[0009] As a further description of the above technical solution:

[0010] The reinforcing ribs are welded to the crossbars, and the reinforcing ribs and crossbars form a convex structure.

[0011] As a further description of the above technical solution:

[0012] The hydraulic adjusting slider is connected to the concave groove by a slot. The hydraulic adjusting slider is symmetrically arranged on the left and right sides of the concave groove. The hydraulic adjusting slider is connected to the hydraulic rod by a slot. A hydraulic cylinder is installed on the lower side of the hydraulic rod.

[0013] As a further description of the above technical solution:

[0014] The lifting bar slide is connected to the crossbar by a slot. The lifting bar slide is arranged in two sets. The lifting bar slide is tightly fitted to the outer edge of the crossbar and the reinforcing rib.

[0015] As a further description of the above technical solution:

[0016] The rotating plug and the constraint clamp are connected by a slot. The end diameter of the constraint clamp is smaller than the diameter of the rotating plug, and the rotating plug rotates along the constraint clamp.

[0017] As a further description of the above technical solution:

[0018] The connecting shaft and the driven shaft are connected by a pin, and the lifting rod and the connecting shaft form a rotating structure through the driven shaft.

[0019] As a further description of the above technical solution:

[0020] The manhole cover plate and the lifting rod are connected by threads, and a rubber pad is attached to the surface of the manhole cover plate.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. This utility model uses a lifting lever type manhole cover opening component. The operator first adjusts the hydraulic adjusting slider along the concave groove according to the required width of the manhole cover to be opened. After adjustment, two sets of hydraulic cylinders are placed on both sides of the manhole cover. At this time, the hydraulic cylinders begin to fill with fluid, pushing the hydraulic rod to rise, which in turn drives the lifting lever slide to rise. This achieves the lifting lever type force on the manhole cover, thus achieving the opening function. The lifting lever slide can move laterally along the crossbar according to the width of the manhole cover, thereby locking onto the crossbar of the manhole cover, ensuring that the manhole cover is evenly stressed during the opening process and avoiding damage caused by excessive stress at a single point.

[0023] 2. This utility model uses a lifting lever-type manhole cover opening assembly. The rotating plug can be adjusted laterally within the constraint clamp, thereby allowing the manhole cover clamping plate to rotate and adjust its angle when it is clamped onto the manhole cover's crossbar, thus improving force distribution. As the hydraulic cylinder pushes upward, the change in force angle, combined with the driven shaft and connecting shaft, improves overall force stability and reduces deformation caused by the rigid force on the rotating plug and constraint clamp. The manhole cover clamping plate is then installed at the end of the lifting rod and clamped under the manhole cover's crossbar. The rubber material increases friction, ensuring the clamping plate is stable and does not easily slip. Attached Figure Description

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

[0025] Figure 2 This is a schematic diagram of the overall front structure of this utility model;

[0026] Figure 3 This is a schematic diagram showing the disassembled structure of the hydraulic adjusting slider and the concave groove of this utility model;

[0027] Figure 4 This is a schematic diagram of the cooperation structure between the lifting lever slide and the concave slide groove of this utility model;

[0028] Figure 5 This is a schematic diagram of the overall mating structure of the electric lifting lever carriage and the manhole cover clamp of this utility model;

[0029] Figure 6 This is a schematic diagram showing the disassembled structure of the electric lifting rod carriage to the lifting rod of this utility model.

[0030] Labels in the diagram: 1. Crossbar; 2. Reinforcing rib; 3. Lifting handle; 4. Lifting lever manhole cover opening assembly; 401. Concave groove; 402. Hydraulic adjusting slider; 403. Hydraulic rod; 404. Hydraulic cylinder; 405. Lifting lever slide; 406. Constraint clamp; 407. Rotary plug; 408. Connecting rod; 409. Connecting shaft; 410. Driven shaft; 411. Lifting rod; 412. Manhole cover clamp. Detailed Implementation

[0031] 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.

[0032] Please see Figure 1-6 As shown, this utility model provides a technical solution: a lever-type manhole cover opening device, including a crossbar 1, a reinforcing rib 2 on the upper side of the crossbar 1, a lifting handle 3 installed in the middle of the outer side of the crossbar 1, and a lever-type manhole cover opening assembly 4 on the lower side of the crossbar 1. The lever-type manhole cover opening assembly 4 includes a concave groove 401 on the inner side of the crossbar 1, a hydraulic adjusting slider 402 installed on the inner side of the concave groove 401, and a hydraulic rod 403 installed on the lower side of the hydraulic adjusting slider 402. The outer side is equipped with a lifting slide 405. The lower inner end of the lifting slide 405 is welded with a constraint clamp 406. The inner side of the constraint clamp 406 is equipped with a rotating plug 407. The lower side of the rotating plug 407 is welded with a connecting rod 408. The lower side of the connecting rod 408 is welded with a connecting shaft 409. The lower outer end of the connecting shaft 409 is equipped with a driven shaft 410. The lower side of the driven shaft 410 is welded with a lifting rod 411. The end of the lifting rod 411 is equipped with a manhole cover clamp 412.

[0033] Furthermore, the reinforcing rib 2 is welded to the crossbar 1, and the reinforcing rib 2 and the crossbar 1 form a convex structure. When needed, the reinforcing rib 2 can effectively disperse the downward pulling force on the crossbar 1, thereby providing more stable support during the opening of the manhole cover and avoiding the problem of excessive pulling force and deformation of the crossbar 1 due to difficulty in opening caused by corrosion or jamming of the manhole cover.

[0034] Furthermore, the hydraulic adjusting slider 402 is connected to the concave slide groove 401 by a slot. The hydraulic adjusting slider 402 is symmetrically arranged on the left and right sides of the concave slide groove 401. The hydraulic adjusting slider 402 is connected to the hydraulic rod 403 by a slot. A hydraulic cylinder 404 is installed on the lower side of the hydraulic rod 403. When needed, the operator first adjusts the hydraulic adjusting slider 402 along the concave slide groove 401 according to the width of the manhole cover to be opened. After adjustment, the two sets of hydraulic cylinders 404 are placed on both sides of the manhole cover. At this time, the hydraulic cylinders 404 begin to fill with fluid, pushing the hydraulic rod 403 to rise, which in turn drives the lifting lever slide 405 to rise. This allows the manhole cover to be lifted by a lever-like force, achieving the opening function.

[0035] Furthermore, the lifting slide 405 is connected to the crossbar 1 by a slot. The lifting slide 405 is arranged in two sets. The lifting slide 405 fits tightly with the outer edge of the crossbar 1 and the reinforcing rib 2. When needed, the lifting slide 405 can move laterally along the crossbar 1 according to the width of the manhole cover, so as to lock onto the crossbar of the manhole cover, ensuring that the manhole cover is subjected to uniform force during opening and avoiding damage caused by excessive force at a single point.

[0036] Furthermore, the rotating plug 407 and the constraint clamp 406 are connected by a slot. The end diameter of the constraint clamp 406 is smaller than the diameter of the rotating plug 407. The rotating plug 407 rotates along the constraint clamp 406. When needed, the rotating plug 407 can be adjusted laterally within the constraint clamp 406, thereby allowing the manhole cover clamp 412 to rotate and adjust its angle when it is clamped onto the crossbar of the manhole cover, thus better bearing the force.

[0037] Furthermore, the connecting shaft 409 and the driven shaft 410 are connected by a pin. The lifting rod 411 and the connecting shaft 409 form a rotating structure through the driven shaft 410. When needed, as the hydraulic cylinder 404 pushes upward, due to the change in the force angle, the driven shaft 410 and the connecting shaft 409 cooperate to improve the overall force stability and reduce the deformation caused by the rigid force on the rotating plug 407 and the constraint clamp 406.

[0038] Furthermore, the manhole cover clamp 412 and the lifting rod 411 are connected by threads. The surface of the manhole cover clamp 412 is covered with a rubber pad. When needed, the manhole cover clamp 412 is installed at the end of the lifting rod 411 and then clipped under the manhole cover crossbar. The rubber material increases friction to ensure that the clamp is stable and does not slip. When the manhole cover clamp 412 is used for a long time, it may be bent. At this time, a new manhole cover clamp 412 can be replaced and installed at the end of the lifting rod 411.

[0039] Working principle: When needed, first place the hydraulic cylinder 404 on both sides of the manhole cover, then insert the hydraulic adjusting slider 402 into the hydraulic rod 403, and then insert the top of the hydraulic adjusting slider 402 into the concave groove 401 at the inner end of the crossbar 1, adjusting it according to the width of the manhole cover. Then, slide the crossbar 1 along the crossbar 1 until the manhole cover clamping plate 412 is inserted under the crossbar of the manhole cover. Then, rotate the plug 407 along the constraint clamp 406 to clamp the manhole cover clamping plate 412 into the middle of the crossbar. Once ready, start the hydraulic cylinder 404 and hydraulic rod 403. Push the crossbar 1 upwards, and the upper surface of the crossbar 1 has reinforcing ribs 2 to provide additional support, ensuring that the crossbar 1 is not easily deformed during the force process. As the crossbar 1 is pushed upwards, the manhole cover is gradually lifted, and the force on the lifting rod 411 will change slightly. At this time, the connecting shaft 409 and the driven shaft 410 at the connection between the connecting rod 408 and the lifting rod 411 will provide a certain degree of angle bending, so as to adapt to the force requirements of different parts of the manhole cover. Finally, after use, the entire device can be moved by pulling the handle 3, thus completing the use process of the lifting manhole cover opening device.

[0040] Although embodiments of the present invention have been shown and described, 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 lever-type manhole cover opening device, comprising a crossbar (1), characterized in that: The upper side of the crossbar (1) is provided with a reinforcing rib (2), the middle of the outer side of the crossbar (1) is provided with a lifting handle (3), the lower side of the crossbar (1) is provided with a lifting lever type manhole cover opening assembly (4), the lifting lever type manhole cover opening assembly (4) includes an inner concave slide groove (401) provided on the inner side of the crossbar (1), a hydraulic adjusting slider (402) is installed on the inner side of the inner concave slide groove (401), a hydraulic rod (403) is installed on the lower side of the hydraulic adjusting slider (402), and a lifting lever slide (405) is provided on the outer side of the crossbar (1). The lower inner end of the lifting slide (405) is welded with a constraint clamp (406), the inner side of the constraint clamp (406) is equipped with a rotating plug (407), the lower side of the rotating plug (407) is welded with a connecting rod (408), the lower side of the connecting rod (408) is welded with a connecting shaft (409), the lower outer end of the connecting shaft (409) is equipped with a driven shaft (410), the lower side of the driven shaft (410) is welded with a lifting rod (411), and the end of the lifting rod (411) is equipped with a well cover clamp (412).

2. The lever-type manhole cover opening device according to claim 1, characterized in that, The reinforcing rib (2) and the crossbar (1) are welded together, and the reinforcing rib (2) and the crossbar (1) form a convex structure.

3. The lever-type manhole cover opening device according to claim 1, characterized in that, The hydraulic adjusting slider (402) is connected to the concave slide groove (401) by a slot. The hydraulic adjusting slider (402) is symmetrically arranged on the left and right sides of the concave slide groove (401). The hydraulic adjusting slider (402) is connected to the hydraulic rod (403) by a slot. A hydraulic cylinder (404) is installed on the lower side of the hydraulic rod (403).

4. The lever-type manhole cover opening device according to claim 1, characterized in that, The lifting slide (405) is connected to the crossbar (1) by a slot. The lifting slide (405) is arranged in two sets. The lifting slide (405) is closely fitted to the outer edge of the crossbar (1) and the reinforcing rib (2).

5. The lever-type manhole cover opening device according to claim 1, characterized in that, The rotating plug (407) and the constraint clamp (406) are connected by a slot. The end diameter of the constraint clamp (406) is smaller than the diameter of the rotating plug (407). The rotating plug (407) rotates along the constraint clamp (406).

6. The lever-type manhole cover opening device according to claim 1, characterized in that, The connecting shaft (409) and the driven shaft (410) are connected by a pin, and the lifting rod (411) and the connecting shaft (409) form a rotating structure through the driven shaft (410).

7. The lever-type manhole cover opening device according to claim 1, characterized in that, The manhole cover plate (412) and the lifting rod (411) are connected by threads, and a rubber pad is pasted on the surface of the manhole cover plate (412).

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