Movable manhole cover auxiliary device

Abstract

The utility model discloses a movable manhole cover auxiliary device, and relates to the field of chemical reaction kettle auxiliary instruments. A movable manhole cover auxiliary device comprises a base provided with universal wheels at the bottom, and further comprises hydraulic cylinders symmetrically and fixedly connected to the two sides of the base; the telescopic rod is connected to the hydraulic cylinder in a sliding manner; the pedal type hydraulic oil pump is fixedly mounted on the base and is communicated with the hydraulic cylinder through a hydraulic oil pipe; according to the movable manhole cover auxiliary device, a mechanical power-assisted mode is adopted, extra power is obtained through a mechanical power-assisted system, the manhole cover is easier to disassemble and assemble, especially for large or heavy manhole covers, the labor intensity of operators is reduced, the operation portability is improved, extra safety guarantee is provided, and the movable manhole cover auxiliary device is suitable for popularization and application. And the accident risk is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of auxiliary equipment for chemical reactors, and in particular relates to a mobile manhole cover auxiliary device. Background Art

[0002] In fine chemical production, especially experimental chemical production, it is often necessary to remove the manhole covers on the reaction equipment due to reaction needs. However, in order to ensure the sealing effect and quality, the manhole covers of the reaction equipment are usually made of heavy metal materials.

[0003] When dismantling and installing it, at least two operators are required to work simultaneously. This dismantling and installation method will take up a lot of manpower and labor. The operators may suffer mechanical injuries, poisoning or suffocation, hypoxia and other hidden dangers during the repetitive mechanical labor, which will cause hidden dangers to the personal safety of the operators and safe production operations. In view of this, the present utility model is specially proposed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a mobile manhole cover auxiliary device which can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is: a mobile manhole cover auxiliary device, including a base with universal wheels at the bottom, and also including: a hydraulic cylinder, symmetrically fixedly connected to both sides of the base; a telescopic rod, slidably connected to the hydraulic cylinder; a foot-operated hydraulic oil pump, fixedly installed on the base and connected to the hydraulic cylinder through a hydraulic oil pipe; a lifting beam, installed on the top of the two telescopic rods; a lifting chain, symmetrically connected to both sides of the lower end of the lifting beam; a lifting hook connected to the lower end of the lifting chain.

[0006] In order to facilitate the limiting of the lifting chain and improve the stability of the manhole cover, a limiting plate is further arranged between the two telescopic rods, and a first through hole and a second through hole are opened on the limiting plate for use with the telescopic rod and the lifting chain. Bolts are symmetrically connected to both sides of the limiting plate through threads, and one end of the bolt close to the telescopic rod extends into the first through hole, and the end of the bolt extending into the first through hole is rotatably connected to an arc plate.

[0007] In order to prevent the arc plate from scratching the telescopic rod, further, a protective pad is provided on one side of the arc plate close to the telescopic rod.

[0008] In order to improve the stability of the manhole cover transportation, further, a storage platform is fixedly connected between the two hydraulic cylinders, and a support rod is fixedly connected between the storage platform and the base.

[0009] In order to facilitate the lifting beam to move to the top of the manhole cover as much as possible, an arc-shaped notch is further provided on one side of the base.

[0010] In order to facilitate the quick disassembly and assembly of the components on the device, further, sockets are symmetrically fixedly connected to both sides of the lower end of the hoisting crossbeam, and the two sockets are respectively sleeved on the telescopic rod on the same side.

[0011] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: the mobile manhole cover auxiliary device of the utility model adopts a mechanical power-assisting method, and obtains additional force through the mechanical power-assisting system, making the removal and installation of the manhole cover easier, especially for large or heavy manhole covers, it reduces the labor intensity of operators, improves the portability of operation, provides additional safety guarantees, and reduces accidental risks.

[0012] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In the attached picture:

[0014] Figure 1 A schematic diagram of the structure of a mobile manhole cover auxiliary device proposed in the utility model Figure 1 ;

[0015] Figure 2 A schematic diagram of the structure of a mobile manhole cover auxiliary device proposed in the utility model Figure 2 ;

[0016] Figure 3 A mobile manhole cover auxiliary device proposed by the utility model Figure 2 Schematic diagram of the structure of part A.

[0017] In the figure: 1. base; 101. arc-shaped notch; 102. storage table; 2. hydraulic cylinder; 201. telescopic rod; 202. foot-operated hydraulic oil pump; 3. lifting beam; 301. socket; 4. lifting chain; 401. lifting hook; 5. limit plate; 501. bolt; 502. arc-shaped plate; 503. protective pad. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0019] Embodiment 1:

[0020] Reference Figure 1-Figure 3 A mobile manhole cover auxiliary device includes a base 1 with universal wheels at the bottom, and also includes: a hydraulic cylinder 2, symmetrically fixedly connected to both sides of the base 1; a telescopic rod 201, slidably connected to the hydraulic cylinder 2; a foot-operated hydraulic oil pump 202, fixedly installed on the base 1, and connected to the hydraulic cylinder 2 through a hydraulic oil pipe; a lifting beam 3, installed on the top of the two telescopic rods 201; a lifting chain 4, symmetrically connected to both sides of the lower end of the lifting beam 3; a lifting hook 401, connected to the lower end of the lifting chain 4.

[0021] When it is necessary to remove the manhole cover on the reaction equipment, first confirm the status of the reaction equipment to ensure that the reaction equipment is in a normal pressure state, the draft device is operating normally and effectively, and the necessary conditions for removing the manhole cover are met, and no dangerous accidents such as explosion and toxic gas leakage will occur. After the prerequisites are confirmed, the operator can then use the foot-operated hydraulic oil pump 202 to deliver hydraulic oil to the hydraulic cylinder 2, and then the telescopic rod 201 will move upward under the push of the hydraulic oil. After adjusting the lifting beam 3 to a suitable height, the lifting hook 401 can be operated and fixed to the manhole cover lifting handle using the lifting hook 401, wherein the lifting hook 401 adopts a hook with a self-locking component. When the lifting hook 401 is buckled onto the manhole cover After the lifting handle is turned on and the self-locking component is ensured to be effective, the fixing device between the manhole cover and the reaction equipment can be removed. After the manhole cover fixing device is removed, the lifting beam 3 can be raised to a suitable height by operating the foot-operated hydraulic oil pump 202 again. As the lifting beam 3 rises, the lifting beam 3 will drive the lifting hook 401 to rise through the lifting chain 4, and the lifting hook 401 will drive the manhole cover to gradually separate from the reaction equipment. After the manhole cover is completely separated from the reaction equipment, the auxiliary device is moved out of the reaction equipment operating area by operating the universal wheel. At this time, the telescopic rod 201 is operated to move downward, so that the lifting beam 3 drives the manhole cover to fall slowly, lowering the overall center of the device, and then the manhole cover can be moved to the designated position for placement.

[0022] Embodiment 2:

[0023] Reference Figure 1-Figure 3, a mobile manhole cover auxiliary device, which is basically the same as Example 1, and further: a limit plate 5 is arranged between the two telescopic rods 201, and a first through hole and a second through hole are opened on the limit plate 5 for use with the telescopic rod 201 and the lifting chain 4. Bolts 501 are symmetrically connected to both sides of the limit plate 5 through threads, and one end of the bolt 501 close to the telescopic rod 201 extends into the first through hole, and the end of the bolt 501 extending into the first through hole is rotatably connected to an arc plate 502.

[0024] A protective pad 503 is provided on one side of the arc plate 502 close to the telescopic rod 201 .

[0025] When the manhole cover is removed from the reaction equipment, the bolt 501 can be screwed to separate the arc plate 502 from the telescopic rod 201, and then the limit plate 5 can be moved down to the position of the lifting chain 4 close to the lifting hook 401, and then the bolt 501 is turned again to make the arc plate 502 tightly against the telescopic rod 201, so that the lifting chain 4 can be limited, thereby improving the stability of the manhole cover during transportation and preventing the manhole cover from shaking violently during movement, which may cause the device to topple over. By setting the protective pad 503, the telescopic rod 201 can be protected to prevent the arc plate 502 from scratching the telescopic rod 201 and affecting the sealing between the telescopic rod 201 and the hydraulic cylinder 2.

[0026] Embodiment 3:

[0027] Reference Figure 1-Figure 3 , a mobile manhole cover auxiliary device, which is basically the same as Example 1, and further: a storage platform 102 is fixedly connected between the two hydraulic cylinders 2, and a support rod is fixedly connected between the storage platform 102 and the base 1. Through the setting of the storage platform 102, when the manhole cover is removed from the reaction equipment, the manhole cover can be placed on the storage platform 102 to improve the transportation stability of the manhole cover, wherein the surface of the storage platform 102 is sprayed with an oil anti-corrosion coating, and oil anti-smashing and anti-collision protection facilities are laid to protect the manhole cover and the storage platform 102.

[0028] An arc-shaped notch 101 is provided on one side of the base 1. By setting the arc-shaped notch 101, the lifting beam 3 can be moved as far as possible to be directly above the manhole cover, so that the manhole cover can be lifted more smoothly by the lifting hook 401, and the manhole cover can be prevented from shaking due to a large misalignment between the lifting beam 3 and the lifting hook 401 when the manhole cover is lifted, thereby affecting the stability of the entire device.

[0029] Sockets 301 are symmetrically fixedly connected to the two sides of the lower end of the lifting beam 3, and the two sockets 301 are respectively sleeved on the telescopic rod 201 on the same side. The setting of the sockets 301 makes it easy to remove the lifting beam 3 from the telescopic rod 201, so that the limit plate 5 can be removed from the telescopic rod 201, and the lifting chain 4 and the lifting beam 3, as well as the lifting chain 4 and the lifting hook 401 are detachably connected by butterfly buckles, so that the device can be easily disassembled when the device is repaired.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention.

Claims

1. A mobile manhole cover auxiliary device, characterized in that: It comprises a base (1) with universal wheels at the bottom, and also comprises: A hydraulic cylinder (2) is symmetrically fixedly connected to two sides of the base (1); A telescopic rod (201) slidably connected to the hydraulic cylinder (2); A foot-operated hydraulic oil pump (202) is fixedly mounted on the base (1) and is connected to the hydraulic cylinder (2) via a hydraulic oil pipe; A hoisting beam (3) mounted on the top of the two telescopic rods (201); A lifting chain (4) symmetrically connected to both sides of the lower end of the lifting beam (3); A lifting hook (401) is connected to the lower end of the lifting chain (4).

2. A mobile manhole cover auxiliary device according to claim 1, characterized in that: A limit plate (5) is arranged between the two telescopic rods (201), and the limit plate (5) is provided with a first through hole and a second through hole for use with the telescopic rod (201) and the lifting chain (4). Bolts (501) are symmetrically connected to the two sides of the limit plate (5) through threads, and one end of the bolt (501) close to the telescopic rod (201) extends into the first through hole, and the end of the bolt (501) extending into the first through hole is rotatably connected to an arc plate (502).

3. A mobile manhole cover auxiliary device according to claim 2, characterized in that: A protective pad (503) is provided on one side of the arc-shaped plate (502) close to the telescopic rod (201).

4. A mobile manhole cover auxiliary device according to claim 1, characterized in that: A storage platform (102) is fixedly connected between the two hydraulic cylinders (2), and a support rod is fixedly connected between the storage platform (102) and the base (1).

5. The mobile manhole cover auxiliary device according to claim 1, characterized in that: An arc-shaped notch (101) is provided on one side of the base (1).

6. A mobile manhole cover auxiliary device according to claim 1, characterized in that: Sockets (301) are symmetrically fixedly connected to both sides of the lower end of the hoisting crossbeam (3), and the two sockets (301) are respectively sleeved on the telescopic rod (201) on the same side.

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