Hydraulic compensation type bolt dismounting and mounting device

Abstract

The utility model provides a hydraulic compensation type bolt dismounting device which comprises a jacking device and an oil pressing device, the jacking device is arranged on the oil pressing device, the jacking device is composed of a jacking oil cylinder, a thrust bearing and a rotating disc, and the jacking oil cylinder is connected with the rotating disc through the thrust bearing; the oil pressing device comprises an oil tank, a pressurization system and a pressure relief system, and the oil tank is connected with the bottom of the jacking oil cylinder through the pressurization system and the pressure relief system respectively. The device can be adjusted steplessly according to the weight of different bolts, is suitable for various different working conditions, and has the advantages of low installation risk, high installation efficiency and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt disassembly and assembly, in particular to a hydraulic compensation type bolt disassembly and assembly device. Background Art

[0002] During the A-level maintenance of the hydropower station, the staff needs to remove the main shaft coupling bolts to facilitate the maintenance of the main shaft flange and bolts. Since the bolt size reaches M150, the weight reaches 130KG. Such a heavy weight leads to very large friction between the threads, making disassembly and installation difficult, and it is easy to cause thread damage or even sticking. In this case, it is impossible to judge whether the thread is damaged in time, which is easy to leave safety hazards.

[0003] Therefore, there is an urgent need for a hydraulic compensating bolt disassembly and assembly device to solve the above problems. Summary of the invention

[0004] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a hydraulic compensation type bolt disassembling and assembling device to solve the problems raised in the background technology.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a hydraulic compensation bolt disassembly and assembly device, comprising a jacking device and an oil pressure device, wherein the jacking device is arranged on the oil pressure device, and the jacking device is composed of a jacking cylinder, a thrust bearing and a turntable, wherein the jacking cylinder and the turntable are connected through a thrust bearing;

[0006] The oil pressure device comprises an oil tank, a pressure boosting system and a pressure relief system. The oil tank is connected to the bottom of the lifting cylinder through the pressure boosting system and the pressure relief system respectively.

[0007] Preferably, the lifting cylinder comprises a cylinder and a lifting platform arranged in the inner cavity of the cylinder, a thrust bearing is arranged on the top of the lifting platform, and the top of the thrust bearing is connected to the bottom of the turntable.

[0008] Preferably, the size of the turntable is suitable for the size of the inner cavity of the oil cylinder, and the turntable can be extended and retracted up and down in the inner cavity of the oil cylinder.

[0009] Preferably, wheels are provided at the bottom of the fuel tank, and a handle is provided at one side of the fuel tank.

[0010] Preferably, the boosting system includes an oil pressurizing device and an adjustable overflow valve, the oil pressurizing device is arranged on one side of the upper surface of the oil tank, one end of the oil pressurizing device is connected to the oil tank, the other end of the oil pressurizing device is connected to one end of the adjustable overflow valve, and the other end of the adjustable overflow valve is connected to the bottom of the lifting cylinder.

[0011] Preferably, the oil pressure equipment comprises an oil pressure pump and a motor, the liquid inlet end of the oil pressure pump extends into the oil tank, the motor output end is connected to the oil pressure pump, and the motor input end is connected to an external power supply.

[0012] Preferably, the liquid inlet end of the adjustable overflow valve is connected to the liquid outlet end of the oil pressure pump, the liquid outlet end of the adjustable overflow valve is connected to the bottom of the lifting cylinder, a pressure gauge is provided on the top of the adjustable overflow valve, and the bottom of the adjustable overflow valve is connected to the oil tank through a pipeline.

[0013] Preferably, the pressure relief system comprises a pressure relief pipe and a pressure relief valve, the pressure relief pipe is connected to the top plate of the oil tank and the bottom of the lifting cylinder, and the pressure relief valve is arranged on the body of the pressure relief pipe.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model utilizes the bolt disassembly and assembly device to effectively avoid thread damage caused by the bolt during installation and disassembly, thereby reducing the risk of equipment damage;

[0016] 2. The utility model overcomes the gravity of the bolts by hydraulic means, which greatly saves manpower, improves the disassembly and assembly efficiency by more than half, and saves human resource investment;

[0017] 3. The utility model has the advantages of simple operation and easy movement. It can be applied to bolts of various models and specifications and different working scenes, and has great application and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of the overall structure of the utility model;

[0019] Figure 2 It is a schematic cross-sectional diagram of the working connection of the utility model. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0021] See also Figure 1 to Figure 2 A hydraulic compensation bolt disassembly and assembly device comprises a lifting device 1 and an oil pressure device 2, wherein the lifting device 1 is arranged on the oil pressure device 2, and the lifting device 1 is composed of a lifting cylinder 3, a thrust bearing 4 and a turntable 5, wherein the lifting cylinder 3 and the turntable 5 are connected via the thrust bearing 4;

[0022] The oil pressure device 2 includes an oil tank 6, a pressure boosting system 7 and a pressure relief system 8. The oil tank 6 is connected to the bottom of the lifting cylinder 3 through the pressure boosting system 7 and the pressure relief system 8 respectively. The device can be infinitely adjusted according to different bolt weights, is suitable for various working conditions, and has the advantages of low installation risk and high installation efficiency.

[0023] Preferably, the lifting cylinder 3 comprises a cylinder 3.1 and a lifting platform 3.2 arranged in the inner cavity of the cylinder 3.1, a thrust bearing 4 is arranged at the top of the lifting platform 3.2, and the top of the thrust bearing 4 is connected to the bottom of the turntable 5.

[0024] Preferably, the size of the turntable 5 is suitable for the inner size of the oil cylinder 3.1, and the turntable 5 can be extended and retracted up and down in the inner cavity of the oil cylinder 3.1. During operation, the bolts are placed on the turntable and move up and down by hydraulic means.

[0025] Preferably, wheels 6.1 are provided at the bottom of the oil tank 6, and a handle 6.2 is provided at one side of the oil tank 6, so as to facilitate the movement of the device during work.

[0026] Preferably, the boosting system 7 comprises an oil pressure device 7.1 and an adjustable relief valve 7.2, wherein the oil pressure device 7.1 is arranged on one side of the upper surface of the oil tank 6, one end of the oil pressure device 7.1 is connected to the oil tank 6, the other end of the oil pressure device 7.1 is connected to one end of the adjustable relief valve 7.2, and the other end of the adjustable relief valve 7.2 is connected to the bottom of the jacking cylinder 3. The adjustable relief valve is used to adjust the output pressure of the oil pump, and is adjusted according to the load of the jacking device.

[0027] Preferably, the oil pressure device 7.1 comprises an oil pressure pump 7.1.1 and a motor 7.1.2, wherein the liquid inlet end of the oil pressure pump 7.1.1 extends into the oil tank 6, the output end of the motor 7.1.2 is connected to the oil pressure pump 7.1.1, and the input end of the motor 7.1.2 is connected to an external power supply. The gravity of the bolts can be overcome by hydraulic means, which greatly saves manpower and improves the efficiency of disassembly and assembly.

[0028] Preferably, the liquid inlet end of the adjustable overflow valve 7.2 is connected to the liquid outlet end of the oil pressure pump 7.1.1, the liquid outlet end of the adjustable overflow valve 7.2 is connected to the bottom of the lifting cylinder 3, a pressure gauge 7.2.1 is provided on the top of the adjustable overflow valve 7.2, and the bottom of the adjustable overflow valve 7.2 is connected to the oil tank 6 through a pipeline.

[0029] Preferably, the pressure relief system 8 includes a pressure relief pipe 8.1 and a pressure relief valve 8.2, wherein the pressure relief pipe 8.1 connects the top plate of the oil tank 6 and the bottom of the lifting cylinder 3, and the pressure relief valve 8.2 is arranged on the body of the pressure relief pipe 8.1. When the screw is completely screwed in, the oil pump is stopped, the pressure relief valve is opened to return the piston to the state before installation, and the bolt installation is completed.

[0030] The working principle of this embodiment is as follows:

[0031] Lift the screw into the jacking equipment, adjust the adjustable relief valve to the minimum pressure state before starting the oil pump, push the bolt to the bottom of the installation station, start the oil pump, close the pressure relief valve, slowly adjust the adjustable relief valve, gradually increase the pressure until the bolt floats slightly, and stop adjusting the relief valve. Pull the bolt upward by hand until the bolt thread contacts the screw hole thread, turn the screw clockwise to screw it in, stop the oil pump after the screw is fully screwed in, open the pressure relief valve to return the piston to the state before installation, and the first bolt is installed. If you need to continue to install the same bolt, you do not need to adjust the relief valve, and continue to follow the above steps.

[0032] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A hydraulically compensated bolt disassembling and assembling device, comprising a lifting device (1) and an oil pressure device (2), characterized in that: The jacking device (1) is arranged on the oil pressure device (2), and the jacking device (1) is composed of a jacking cylinder (3), a thrust bearing (4) and a turntable (5), and the jacking cylinder (3) and the turntable (5) are connected via the thrust bearing (4); The oil pressure device (2) comprises an oil tank (6), a pressure boosting system (7) and a pressure relief system (8); the oil tank (6) is connected to the bottom of the lifting cylinder (3) via the pressure boosting system (7) and the pressure relief system (8), respectively.

2. A hydraulically compensated bolt disassembling and assembling device according to claim 1, characterized in that: The lifting oil cylinder (3) comprises an oil cylinder (3.1) and a lifting platform (3.2) arranged in the inner cavity of the oil cylinder (3.1); a thrust bearing (4) is arranged at the top end of the lifting platform (3.2); and the top end of the thrust bearing (4) is connected to the bottom end of the turntable (5).

3. A hydraulically compensated bolt disassembling and assembling device according to claim 2, characterized in that: The size of the rotating disk (5) is compatible with the size of the inner cavity of the oil cylinder (3.1), and the rotating disk (5) can be extended and retracted up and down in the inner cavity of the oil cylinder (3.1).

4. The hydraulically compensated bolt disassembling and assembling device according to claim 1, characterized in that: The bottom of the oil tank (6) is provided with wheels (6.1), and one side of the oil tank (6) is provided with a handle (6.2).

5. The hydraulically compensated bolt disassembling and assembling device according to claim 1, characterized in that: The boosting system (7) comprises an oil pressure device (7.1) and an adjustable overflow valve (7.2). The oil pressure device (7.1) is arranged on one side of the upper surface of the oil tank (6). One end of the oil pressure device (7.1) is connected to the oil tank (6), and the other end of the oil pressure device (7.1) is connected to one end of the adjustable overflow valve (7.2). The other end of the adjustable overflow valve (7.2) is connected to the bottom of the lifting cylinder (3).

6. A hydraulically compensated bolt disassembling and assembling device according to claim 5, characterized in that: The oil pressure equipment (7.1) comprises an oil pressure pump (7.1.1) and a motor (7.1.2). 7.1.1) The liquid inlet end extends into the oil tank (6), and the output end of the motor (7.1.2) is connected to the oil pressure pump ( 7.1.1) is connected, and the input end of the motor (7.1.2) is connected to an external power supply.

7. The hydraulic compensation bolt disassembly and assembly device according to claim 5, characterized in that: The adjustable relief valve (7.2) is connected to the fluid inlet end of the oil pressure pump ( 7.1.1) is connected to the liquid outlet end, the liquid outlet end of the adjustable relief valve (7.2) is connected to the bottom of the lifting cylinder (3), and the top of the adjustable relief valve (7.2) is provided with a pressure gauge ( 7.2.1), the bottom of the adjustable overflow valve (7.2) is connected to the oil tank (6) through a pipeline.

8. The hydraulic compensation bolt disassembly and assembly device according to claim 1, characterized in that: The pressure relief system (8) comprises a pressure relief pipe (8.1) and a pressure relief valve (8.2); the pressure relief pipe (8.1) is connected to the top plate of the oil tank (6) and the bottom of the lifting cylinder (3); and the pressure relief valve (8.2) is arranged on the body of the pressure relief pipe (8.1).

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