Well lid lifting device

Abstract

The utility model provides a well lid lifting device, which relates to the technical field of well lids and comprises square steel, a lever block is mounted in the square steel, a lifting rope is connected to the bottom of the lever block, a lifting hook is mounted at one end of the lifting rope, mounting plates are symmetrically mounted at the top of the square steel, pulleys are mounted in the mounting plates, and the pulleys are connected with the lifting rope. A pull rope is connected into the pulley in a penetrating mode, a hanging ring is installed at one end of the pull rope, and a supporting frame is installed at one end of the hanging ring. When the well lid is hooked by the lifting hook, the bottom of the well lid can be supported and dragged through the supporting frame, then the pull rope is manually pulled by people to be matched with the pulley, additional support can be provided for the well lid in the well lid lifting process, more stable lifting is guaranteed, shaking and inclination of the well lid in the lifting process are reduced, and the well lid can be lifted more stably. Furthermore, the safety and the reliability of hoisting are ensured, and the pulley is matched, so that the force required by manual pulling is favorably saved, and an operator can easily pull the pull rope.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole covers, in particular to a manhole cover lifting device. Background Art

[0002] Manhole covers are made of materials such as cast iron or steel and are used to cover underground passages or facilities. They offer high strength and durability, protecting underground passages or facilities while also preventing pedestrians or vehicles from entering, ensuring their safety. Because manhole covers are often exposed to the elements, such as sunlight, rain, and vehicle traffic, they require a manhole cover lifting device to remove them and conduct regular inspections and maintenance to ensure their normal use and safety.

[0003] In the prior art, for example, the Chinese patent number CN220432302U, "A manhole cover lifting device," includes a support frame; a power gear fixedly connected to a rotating shaft rotatably connected to the support frame, and one end of the rotating shaft is connected to a handle capable of driving the rotation thereof; a driven gear rotatably connected to the support frame in meshing engagement with the power gear, wherein the radius of the power gear is smaller than that of the driven gear, and a rotating wheel coaxially rotating with the driven gear is provided on one side of the driven gear; a traction rope, one end of which is tied to the rotating wheel, and the other end of which has a portion extending vertically under the action of gravity and used to connect to the manhole cover. The preferred manhole cover lifting device of the present utility model can not only lift the manhole cover more labor-savingly to facilitate maintenance of the shaft, but also can better lift the manhole cover in a vertically movable manner, reducing the possibility of the manhole cover getting stuck.

[0004] The existing lifting device usually uses a hook to lift the manhole cover when in use. During operation, due to the heavy weight of the manhole cover itself, it will shake during the lifting process, which can easily cause the manhole cover to fall, resulting in operational errors and reduced work efficiency. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that during operation, due to the heavy weight of the manhole cover itself, it will shake during the hooking process, which may easily cause the manhole cover to fall, resulting in operational errors and thus reduced work efficiency. A manhole cover lifting device is proposed.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a manhole cover lifting device, comprising square steel, a lever hoist is installed inside the square steel, a lifting rope is connected to the bottom of the lever hoist, a hook is installed at one end of the lifting rope, a mounting plate is symmetrically installed on the top of the square steel, a pulley is installed inside the mounting plate, a pulley is connected to the inside of the pulley, a lifting ring is installed at one end of the lifting ring, and a support frame is installed at one end of the lifting ring.

[0007] Preferably, a plurality of hydraulic telescopic rods are installed at the bottom of the square steel, and a support plate is installed at the bottom of the hydraulic telescopic rods.

[0008] Preferably, a plurality of rubber strips are distributed on the bottom of the support plate.

[0009] Preferably, a push-pull handrail is installed on the side of the square steel, and one end of the pull rope is arranged on the side of the push-pull handrail.

[0010] Preferably, universal wheels with brake handles are installed at the four corners of the bottom of the square steel, and the support plate is arranged on the side of the universal wheels with brake handles.

[0011] Preferably, a chain is installed inside the lever hoist, and one end of the chain is wound around the square steel.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are:

[0013] 1. In the utility model, when the hook hooks up the manhole cover, the support frame is used to provide support for the bottom of the manhole cover. Then people manually pull the pull rope to cooperate with the pulley, which is beneficial to provide additional support and traction for the manhole cover during the lifting process, ensuring a more stable lifting, reducing the shaking and tilting of the manhole cover during the lifting process, and thus ensuring the safety and reliability of the lifting. The cooperation with the pulley is beneficial to saving the force required for manual pulling, allowing the operator to easily pull the pull rope, thereby improving work efficiency.

[0014] 2. In the present invention, the support plate is pushed to contact the ground by extending the hydraulic telescopic rod, which is beneficial to increasing the contact area between the square steel and the ground, thereby ensuring the stability of the square steel, preventing the square steel from shifting during operation, making the square steel more stable during operation, reducing the occurrence of tilting and falling, and thus ensuring the safe lifting of the manhole cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of a manhole cover lifting device proposed in the utility model;

[0016] Figure 2 This is a schematic structural diagram of a manhole cover lifting device proposed by the utility model from another angle;

[0017] Figure 3 This is a schematic diagram of the structure of an auxiliary support assembly of a manhole cover lifting device proposed in the utility model;

[0018] Figure 4 The utility model provides a partial structural schematic diagram of a manhole cover lifting device.

[0019] Legend: 1. Square steel; 2. Push-pull handrail; 3. Lever hoist; 4. Hook; 5. Lifting rope; 6. Universal wheel with brake handle; 7. Pulley; 8. Pull rope; 9. Mounting plate; 10. Support frame; 11. Lifting ring; 12. Hydraulic telescopic rod; 13. Support plate; 14. Rubber strip. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1: Figures 1-4 As shown, the utility model provides a technical solution: a manhole cover lifting device, comprising square steel 1, a lever hoist 3 is installed inside the square steel 1, a lifting rope 5 is connected to the bottom of the lever hoist 3, a hook 4 is installed at one end of the lifting rope 5, a mounting plate 9 is symmetrically installed on the top of the square steel 1, a pulley 7 is installed inside the mounting plate 9, a pull rope 8 is connected to the inside of the pulley 7, a lifting ring 11 is installed at one end of the lifting ring 11, a support frame 10 is installed at one end of the lifting ring 11, a chain is installed inside the lever hoist 3, and one end of the chain is wrapped around the square steel 1.

[0023] In this embodiment, when the operator pulls the handle, the chain rotates, and the chain drives the lifting rope 5 and the hook 4 to rise through the transmission mechanism inside the hand hoist 3, thereby realizing the lifting of the manhole cover. One end of the hook 4 is conducive to hooking the manhole cover. In the process of lifting the manhole cover, when the hook 4 hooks the manhole cover, it is conducive to providing support and traction to the bottom of the manhole cover through the support frame 10. Then people manually pull the pull rope 8 to cooperate with the pulley 7, which is conducive to providing additional support for the manhole cover during the lifting process of the manhole cover, ensuring more stable lifting, reducing the shaking and tilting of the manhole cover during the lifting process, and thus ensuring the safety and reliability of the lifting. By cooperating with the pulley 7, it is conducive to saving the force required for manual pulling, allowing the operator to easily pull the pull rope 8, thereby improving work efficiency.

[0024] Example 2: Figures 1-4As shown, a plurality of hydraulic telescopic rods 12 are installed at the bottom of the square steel 1, a support plate 13 is installed at the bottom of the hydraulic telescopic rod 12, a plurality of rubber strips 14 are distributed at the bottom of the support plate 13, a push-pull handrail 2 is installed on the side of the square steel 1, one end of the pull rope 8 is set on the side of the push-pull handrail 2, and universal wheels 6 with brake handles are installed at the four corners of the bottom of the square steel 1, and the support plate 13 is set on the side of the universal wheel 6 with brake handle.

[0025] In this embodiment, the operator pushes and pulls the handrail 2 with the universal wheel 6 with a brake handle to drive the square steel 1 to move, thereby improving the flexibility and convenience of the equipment. When the square steel 1 moves to the required operating site, the hydraulic telescopic rod 12 is extended to push the support plate 13 to contact the ground, which is beneficial to increase the contact area between the square steel 1 and the ground, thereby ensuring the stability of the square steel 1, preventing the square steel 1 from being displaced during operation, making the square steel 1 more stable during operation, reducing the occurrence of tilting and falling, thereby ensuring the safe lifting of the manhole cover. When the square steel 1 needs to move, the hydraulic telescopic rod 12 contracts to drive the support plate 13 to rise, and the rubber strip 14 is beneficial to increase the friction between the support plate 13 and the ground, further improving the stability of the square steel 1.

[0026] The working principle of this embodiment: when in use, the operator first pushes and pulls the handrail 2 with the universal wheel 6 with a brake handle to drive the square steel 1 to move. When the square steel 1 moves to the required operating site, the hydraulic telescopic rod 12 is extended to push the support plate 13 to contact the ground, which is beneficial to increase the contact area between the square steel 1 and the ground, thereby ensuring the stability of the square steel 1. Then the hook 4 is hooked on the manhole cover. When the operator pulls the handle, the chain rotates, and the chain drives the lifting rope 5 and the hook 4 to rise through the transmission mechanism inside the hand hoist 3, thereby realizing the lifting of the manhole cover. When the hook 4 hooks the manhole cover, the support frame 10 is helpful to provide additional support and traction to the bottom of the manhole cover. Then people manually pull the pull rope 8 and cooperate with the pulley 7, which is beneficial to provide support for the manhole cover during the lifting process, ensuring a more stable lifting.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A manhole cover lifting device, comprising square steel (1), characterized in that: A lever hoist (3) is installed inside the square steel (1), a lifting rope (5) is connected to the bottom of the lever hoist (3), a hook (4) is installed at one end of the lifting rope (5), a mounting plate (9) is symmetrically installed on the top of the square steel (1), a pulley (7) is installed inside the mounting plate (9), a pull rope (8) is connected to the inside of the pulley (7), a lifting ring (11) is installed at one end of the lifting ring (11), and a support frame (10) is installed at one end of the lifting ring (11).

2. The manhole cover lifting device according to claim 1, characterized in that: A plurality of hydraulic telescopic rods (12) are installed at the bottom of the square steel (1), and a support plate (13) is installed at the bottom of the hydraulic telescopic rods (12).

3. The manhole cover lifting device according to claim 2, characterized in that: A plurality of rubber strips (14) are distributed on the bottom of the support plate (13).

4. The manhole cover lifting device according to claim 1, characterized in that: A push-pull handrail (2) is installed on the side of the square steel (1), and one end of the pull rope (8) is arranged on the side of the push-pull handrail (2).

5. The manhole cover lifting device according to claim 2, characterized in that: Universal wheels (6) with brake handles are installed at the four corners of the bottom of the square steel (1), and the support plate (13) is arranged on the side of the universal wheels (6) with brake handles.

6. The manhole cover lifting device according to claim 1, characterized in that: A chain is installed inside the lever hoist (3), and one end of the chain is wound around the square steel (1).

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