Cover plate opening and closing device

Abstract

The utility model discloses a cover plate opening and closing device which comprises a vehicle body, a front hanging structure and a lever structure. The vehicle body comprises axles, wheels are mounted at two ends of the axles through bearings, and axle brackets are vertically and fixedly mounted on the axles; the lever structure comprises a lever; one end, far away from the axle, of the axle bracket is fixedly connected with the lever; the front hanging structure comprises a connecting frame, the upper end of the connecting frame is fixedly connected with one end of the lever, two hollow transverse pipes are fixed to the lower end of the connecting frame, adjusting blocks are arranged at the two ends of each transverse pipe, two guide rods are fixed to the adjusting blocks, the guide rods are in sliding fit with the transverse pipes, chains are downwards fixed to the adjusting blocks, and hooks are fixed to the lower ends of the chains. And a position adjusting structure is arranged between the transverse pipe and the adjusting block. According to the cover plate opening and closing device, opening and closing of the cover plate are achieved through the hook with the front end capable of transversely stretching out and drawing back to adjust the distance according to the lever principle, safety is high, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of cover plate lifting, in particular to a cover plate opening and closing device. Background Art

[0002] In modern engineering construction, pipe trenches and cable trenches have become an indispensable part. Pipe trenches and cable trenches can not only effectively hide pipelines and cables, making the whole factory area look more tidy and orderly, improving the overall image of the factory area, but also effectively prevent pipelines and cables from being damaged by external factors such as soil erosion and mechanical impact, extend their service life, and are also conducive to daily inspection, maintenance or replacement work, further improving the operation efficiency of the water plant and ensuring the safety and reliability of the water plant operation.

[0003] Cover plates are provided on pipe trenches and cable trenches. When overhauling pipelines or cables, the cover plates need to be removed. Most cover plates are made of steel or concrete, with large sizes and heavy weights. Although they have high stability, it is quite difficult to open and close them during daily operation and maintenance. The current methods of opening and closing cover plates are as follows:

[0004] 1. Mechanical lifting devices, but their structures are often relatively complex and their own weights are also heavy. Some even require a supporting motor to drive, which not only increases energy consumption but also increases operation and maintenance costs. The sizes and weights of the currently used cover plates vary, and these devices cannot adapt to cover plates of different sizes and weights; the operation methods and operation positions are relatively close to the cover plates, and operators need to be close to the cover plates during the lifting process, increasing safety risks. Therefore, in actual operation and maintenance, in most cases, the traditional manual opening and closing method mainly using crowbars is still adopted.

[0005] 2. The traditional manual opening and closing method mainly using crowbars. The edge of the cover plate is pried up by the crowbar, and then multiple people cooperate to move the cover plate. The crowbar is very likely to cause irreparable damage to the cover plate when prying the edge of the cover plate. At the same time, multiple people usually need to cooperate during the moving process, which has the disadvantages of being time-consuming and laborious. Summary of the Invention

[0006] Aiming at the deficiencies of the above-mentioned prior art, the purpose of this patent application is to provide a cover plate opening and closing device. By using the lever principle, hooks with a laterally telescopic adjustable spacing at the front end are used to hook cover plates of different sizes, different materials, different types and different weights of pipe trenches, cable trenches, large valve wells and equipment maintenance manholes, etc. Operators only need to reasonably adjust the longitudinal length of the rear lever according to the weight of the cover plate, and then press down the end of the lever, and they can easily complete the opening, closing and transportation of the cover plate away from the cover plate, solving the problems of limited applicable scenarios, low operation safety, time-consuming and laborious, and relatively high operation and maintenance costs of the existing devices.

[0007] To solve the above technical problems, the present utility model adopts the following technical solutions:

[0008] A cover opening and closing device, comprising a vehicle body, a front lifting structure and a lever structure;

[0009] The vehicle body includes a wheel axle, both ends of the wheel axle are installed with wheels through bearings, and the wheel axle is vertically and fixedly installed with an axle frame;

[0010] The lever structure includes a lever, and one end of the axle frame away from the wheel axle is fixedly connected to the lever;

[0011] The front lifting structure includes a connecting frame, the upper end of the connecting frame is fixedly connected to one end of the lever, the lower end of the connecting frame is fixed with two hollow horizontal pipes, both ends of the horizontal pipes are provided with adjusting blocks, the adjusting blocks are fixed with two guide rods, the guide rods are slidably matched with the horizontal pipes, the adjusting blocks are fixed with chains downward, and the lower ends of the chains are fixed with hooks; a position adjusting structure is arranged between the horizontal pipes and the adjusting blocks.

[0012] In this way, when lifting the cover, hold the lever structure, push the vehicle body to the position of the cover, use the front lifting structure to lift the cover, that is, the hook hooks the lifting ring or lifting hole on the upper surface of the cover, and then move the cover to the required position through the vehicle body, and then put down the cover to complete the opening and closing of the cover.

[0013] Wherein, the lever structure further includes a sliding rod, a sliding hole slidably matched with the sliding rod is opened at one end of the lever away from the connecting frame, a handle is fixed at the end of the sliding rod outside the sliding hole, a plurality of rod holes are arranged through the end of the lever away from the connecting frame, a locking hole is opened on the sliding rod, and the lever and the sliding rod are connected by a locking pin.

[0014] Wherein, the axle frame is vertically fixed with a reinforcing rod, the reinforcing rod is arranged below the lever at intervals, and both ends of the reinforcing rod are respectively fixedly connected to the lever and the wheel axle through an upper rod and a lower rod.

[0015] Wherein, the reinforcing rod is provided with an auxiliary hole, an auxiliary rod is slidably matched in the auxiliary hole, a connecting block is fixed at the end of the auxiliary rod outside the auxiliary hole, and the connecting block and the handle are fixedly connected by a connecting rod.

[0016] Wherein, inclined braces are fixed between both sides of the axle frame and the wheel axle.

[0017] Among them, the position adjustment structure includes an adjustment rod, adjustment holes are evenly arranged on the adjustment rod, both ends and the middle of the adjustment rod are fixedly connected to the horizontal pipe through connecting rods, two sliding sleeves are slidably matched on the adjustment rod, a slider is fixed on the sliding sleeve, hinge rods are respectively rotated on the two sliders, and the hinge rods are rotatably connected to the adjustment block; the sliding sleeve is provided with a jack, and the adjustment hole and the jack are connected by a pin.

[0018] In summary, for this cover opening and closing device, using the lever principle, through the hook at the front end that can be horizontally telescoped to adjust the distance, it hooks the covers of different sizes, different materials, different types, and different weights in trenches, cable trenches, large valve wells, and equipment maintenance manholes, etc. The operator only needs to reasonably adjust the longitudinal length of the lever structure at the rear according to the weight of the cover, and then press down the end of the lever structure, and can easily complete the opening, closing and transportation of the cover away from the cover, solving the problems of limited applicable scenarios of the existing device, low operation safety, time-consuming and laborious, and relatively high operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a cover opening and closing device described in the present utility model.

[0020] Figure 2 is Figure 1 a schematic diagram of the state after the length of the lever structure in

[0021] Figure 3 is Figure 1 a schematic diagram of the state after the length of the front lifting structure in

[0022] Figure 4 is Figure 1 a schematic diagram of the state after the lengths of both the lever structure and the front lifting structure in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The present utility model will be further described in detail below with reference to the drawings. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the orientation words such as "upper, lower" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the protection scope of the present utility model; the orientation words "inner, outer" refer to the inside and outside relative to the contour of each component itself.

[0024] As Figures 1-4 shown, a cover opening and closing device includes a vehicle body, a front lifting structure and a lever structure;

[0025] The vehicle body includes an axle 1, wheels 2 are installed at both ends of the axle through bearings, and a bracket 3 is vertically and fixedly installed on the axle;

[0026] The lever structure includes a lever 4, and one end of the bracket away from the axle is fixedly connected to the lever;

[0027] The front lifting structure includes a connecting frame 5, the upper end of the connecting frame is fixedly connected to one end of the lever, two hollow cross tubes 6 are fixed at the lower end of the connecting frame, adjustment blocks 7 are arranged at both ends of the cross tubes, two guide rods 8 are fixed on the adjustment blocks, the guide rods are slidably matched with the cross tubes, a chain 9 is fixed downward on the adjustment block, and a hook 10 is fixed at the lower end of the chain; a position adjustment structure is arranged between the cross tube and the adjustment block.

[0028] In this way, when lifting the cover plate, hold the lever structure, push the vehicle body to the position of the cover plate, use the front lifting structure to lift the cover plate, that is, the hook hooks the lifting ring or lifting hole on the upper surface of the cover plate, and then move the cover plate to the required position through the vehicle body, and then put down the cover plate to complete the opening and closing of the cover plate.

[0029] During implementation, the lever structure further includes a sliding rod 11, a sliding hole slidably matched with the sliding rod is opened at one end of the lever away from the connecting frame, a handle 12 is fixed at the end of the sliding rod outside the sliding hole, a plurality of rod holes 13 are arranged through the end of the lever away from the connecting frame, a locking hole 14 is opened on the sliding rod, and the lever and the sliding rod are connected by a locking pin (not shown). Since the weights of the cover plates are different, the length of the lever structure needs to be adjusted. Unlock the locking pin, hold the handle, drive the sliding rod to move along the sliding hole, and after moving in place, use the locking pin to lock the position of the sliding rod relative to the lever to complete the length adjustment of the lever structure.

[0030] During implementation, a reinforcing rod 15 is vertically and fixedly installed on the bracket, the reinforcing rods are arranged at intervals below the lever, and both ends of the reinforcing rod are fixedly connected to the lever and the axle through an upper rod 16 and a lower rod 17 respectively. The overall strength is improved.

[0031] During implementation, an auxiliary hole is arranged on the reinforcing rod, an auxiliary rod 18 is slidably matched in the auxiliary hole, a connecting block 19 is fixed at the end of the auxiliary rod outside the auxiliary hole, and the connecting block is fixedly connected to the handle through a connecting rod 20. Through the arrangement of the auxiliary rod, the strength and stability of the lever structure are better improved.

[0032] During implementation, diagonal braces 21 are fixed between both sides of the bracket and the axle. The overall strength is improved.

[0033] During implementation, the position adjustment structure includes an adjustment rod 22. Adjustment holes 23 are evenly arranged on the adjustment rod. Both ends and the middle of the adjustment rod are fixedly connected to the horizontal pipe through connecting rods 24. Two sliding sleeves 25 are slidably fitted on the adjustment rod. Sliders are fixed on the sliding sleeves. Two articulated rods 26 are respectively rotated on the sliders. The articulated rods are rotationally connected to the adjustment blocks; the sliding sleeves are provided with insertion holes 27. The adjustment holes and the insertion holes are connected by pins (not shown). Pull out the pin, hold the adjustment block and move it. During the movement, due to the action of the articulated rod, the sliding sleeve is driven to move. After moving in place, the pin is inserted into the corresponding holes of the sliding sleeve and the adjustment rod to fix the position of the adjustment block, thereby realizing the adjustment of the position of the hook and being able to adapt to covers of different sizes.

[0034] Specifically, when in use, it includes the following steps:

[0035] 1. Hold the handle and push the vehicle body to move in place;

[0036] 2. Pull out the locking pin, pull the handle, adjust the position of the sliding rod relative to the lever. After adjustment in place, the locking pin passes through the rod hole and the locking hole to limit the length of the lever structure;

[0037] 3. Pull out the pin. After holding the adjustment block and moving it in place, use the pin to pass through the insertion hole and the adjustment hole on the sliding sleeve and the adjustment rod to limit the position of the adjustment block;

[0038] 4. The hook hooks the lifting ring or the lifting hole on the upper surface of the cover;

[0039] 5. Hold the handle and press down, lift the cover through the hook. Then push the vehicle body to move. After moving in place, unload the cover to complete the opening and closing of the cover.

[0040] Finally, it should be noted that those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalents, the present utility model also intends to include these changes and modifications.

Claims

1. A cover opening and closing device, characterized in that: It includes a vehicle body, a front suspension structure and a lever structure; The vehicle body comprises a wheel axle, wheels are mounted on both ends of the wheel axle through bearings, and an axle frame is vertically fixedly mounted on the wheel axle; The lever structure comprises a lever, and one end of the shaft frame away from the wheel axle is fixedly connected to the lever; The front hanging structure includes a connecting frame, the upper end of the connecting frame is fixedly connected to one end of the lever, the lower end of the connecting frame is fixed with two hollow transverse tubes, both ends of the transverse tubes are provided with adjustment blocks, the adjustment blocks are fixed with two guide rods, the guide rods are slidably matched with the transverse tubes, a chain is fixed downwardly to the adjustment block, and a hook is fixed to the lower end of the chain; a position adjustment structure is provided between the transverse tube and the adjustment block.

2. A cover opening and closing device according to claim 1, characterized in that: The lever structure also includes a sliding rod, and a sliding hole that slides with the sliding rod is opened at one end of the lever away from the connecting frame, and a handle is fixed to the end of the sliding rod located outside the sliding hole. A plurality of rod holes are penetrated at one end of the lever away from the connecting frame, and a locking hole is opened on the sliding rod. The lever and the sliding rod are connected by a locking pin.

3. A cover opening and closing device according to claim 2, characterized in that: The shaft frame is vertically fixed with a reinforcing rod, the reinforcing rod is arranged below the lever at intervals, and two ends of the reinforcing rod are respectively fixedly connected with the lever and the wheel axle through an upper rod and a lower rod.

4. A cover opening and closing device according to claim 3, characterized in that: The reinforcing rod is provided with an auxiliary hole, in which an auxiliary rod is slidably fitted, and a connecting block is fixed to the end of the auxiliary rod located outside the auxiliary hole, and the connecting block is fixedly connected to the handle through a connecting rod.

5. A cover opening and closing device according to claim 1, characterized in that: Diagonal braces are fixed between the two sides of the shaft frame and the wheel axle.

6. A cover opening and closing device according to claim 1, characterized in that: The position adjustment structure includes an adjustment rod, which is evenly provided with adjustment holes. Both ends and the middle part of the adjustment rod are fixedly connected to the cross tube through a connecting rod. The adjustment rod has two sliding sleeves that are slidably fitted, and a slider is fixed on the sliding sleeve. The two sliders are respectively rotated with hinged rods, and the hinged rods are rotatably connected to the adjustment block; the sliding sleeve is provided with a socket, and the adjustment hole is connected to the socket through a pin.

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