Heavy hydraulic wheel pulling device

Abstract

The utility model discloses a heavy hydraulic wheel pulling device which comprises a clamping jaw, an ejector rod, a clamping jaw frame, a hydraulic oil cylinder, an operating handle, a motor, a front machine frame and a rear machine frame. The tail ends of the clamping jaws are transversely hinged to the clamping jaw frame, and the clamping jaw frame is of a transversely-arranged U-shaped structure. The clamping jaw frame is installed on the front rack, the longitudinal interface of the front rack is shaped like a Chinese character'ji ', and the bottom of the front rack is connected with the rear rack. A hydraulic oil cylinder is installed in the rear rack, and an ejector rod in the hydraulic oil cylinder penetrates through the front rack and the clamping jaw frame and then is located in the center of the clamping jaw. An operating handle is arranged on the rear rack and is used for controlling the hydraulic oil cylinder to stretch out and draw back; and the motor is arranged on the rear rack. According to the utility model, the maintenance time of large-scale equipment is reduced, the influence range of equipment faults is reduced, and the maintenance cost of the equipment is effectively reduced.

Description

Technical Field

[0001] The utility model relates to a maintenance and disassembly device for shaft parts assembled by interference fit on a large component, in particular to a heavy hydraulic puller device. Background Art

[0002] Routine maintenance of water pumps, motors, reducers and other equipment often requires the removal or installation of parts such as wheels and impellers. In the past, due to the lack of special tools, wheels that were difficult to remove had to be outsourced for repair or disassembled using a jack and a torch on site for heating. This method is not only time-consuming, labor-intensive and costly, but also has low disassembly efficiency and requires the cooperation of multiple people. There are also safety hazards when using a torch to heat. In the case of large wheels, even successful disassembly cannot be guaranteed. Summary of the invention

[0003] The utility model aims to solve the above problems and provides a heavy-duty hydraulic puller device for improving the work efficiency of workers in disassembling and installing components such as wheels, reducing the labor intensity of workers, greatly shortening equipment maintenance time, and accelerating equipment turnover rate.

[0004] The technical solution adopted by the utility model is: a heavy-duty hydraulic puller device, comprising a clamping claw, a push rod, a clamping claw frame, a hydraulic cylinder, an operating handle, a motor, a front frame and a rear frame; the end of the clamping claw is laterally hinged on the clamping claw frame, and the clamping claw frame is a horizontally placed U-shaped structure; the clamping claw frame is installed on the front frame, the longitudinal interface of the front frame is in the shape of a U-shaped structure, and its bottom is connected to the rear frame; a hydraulic cylinder is installed inside the rear frame, and the push rod in the hydraulic cylinder is located at the center of the clamping claw after passing through the front frame and the clamping claw frame; an operating handle is provided on the rear frame for controlling the extension and retraction of the hydraulic cylinder; the motor is arranged on the rear frame, and the motor is used to drive the oil pump to transport the hydraulic oil in the oil tank to the hydraulic cylinder through the pressure regulating valve and the reversing valve; the operating handle controls the reversing valve for controlling the extension and retraction of the hydraulic cylinder.

[0005] Furthermore, the clamping claw is a three-claw clamping claw, and the three claws are respectively located at the top and both sides.

[0006] Furthermore, rollers are installed under the front frame and the rear frame, and the rollers can roll on the tracks under the puller device.

[0007] The beneficial effects of the utility model are as follows: the utility model is extremely efficient in disassembling and installing components such as a pair of wheels. It only takes about 10 minutes to disassemble a large pair of wheels, while it takes about 4 hours to disassemble a large pair of wheels in a traditional way and there is no guarantee that the disassembly will be successful every time, which reduces the maintenance time of large equipment, reduces the impact range of equipment failures, and effectively reduces equipment maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structure of the utility model;

[0009] Figure 2 This is a schematic diagram of the internal oil circuit in the utility model;

[0010] In the figure: 1-claw, 2-rod, 3-claw frame, 4-front frame, 5-hydraulic cylinder, 6-operating handle, 7-motor, 8-track, 9-roller, 10-rear frame, 11-reversing valve, 12-pressure regulating valve, 13-oil pump, 14-oil tank. DETAILED DESCRIPTION

[0011] The present invention will be further described below in conjunction with the accompanying drawings.

[0012] like Figure 1 As shown, the utility model discloses a heavy-duty hydraulic wheel pulling device, including a claw 1, a push rod 2, a claw frame 3, a hydraulic cylinder 5, an operating handle 6, a motor 7, a front frame 4 and a rear frame 10; the claw 1 used in the utility model is a three-claw claw, and the three claws are respectively located at the top and the two sides. The claw at the top can clamp the edge of the wheel and other components under the action of gravity, and the claws on both sides will not separate due to the action of gravity. The end of the claw is laterally hinged on the claw frame 3, and the claw frame 3 is a horizontal U-shaped structure. The claw frame 3 is installed on the front frame 4, and the longitudinal interface of the front frame 4 is L-shaped. The bottom of the front frame 4 is connected to the rear frame 10. A hydraulic cylinder 5 is installed inside the rear frame 10. The push rod 2 in the hydraulic cylinder 5 passes through the front frame 4 and the claw frame 3 and is located at the center of the claw 1, which is used to pull the wheel of the wheel and other components.

[0013] In order to facilitate the control of the extension and retraction of the push rod 2 on the hydraulic cylinder 5, the utility model is provided with an operating handle 6 on the rear frame 10, and the operator can pull the operating handle 6 to control it.

[0014] like Figure 2 As shown, the rear frame of the utility model is provided with a motor 7, which is used to drive an oil pump 13 to deliver the hydraulic oil in the oil tank 14 to the hydraulic cylinder 5 through a pressure regulating valve 12 and a reversing valve 11. At the same time, the operating handle 6 controls the reversing valve 11 to control the extension and retraction of the hydraulic cylinder 5.

[0015] The front frame 4 and the rear frame 10 in the utility model are both equipped with rollers 9, which can roll on the track 8 below the puller device, so that the puller device is easy to move and can also assist the device in performing the puller operation.

[0016] The above content is a further detailed description of the utility model in combination with specific preferred implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the protection scope of the utility model.

Claims

1. A heavy-duty hydraulic puller device, characterized in that: It includes a claw, a push rod, a claw frame, a hydraulic cylinder, an operating handle, a motor, a front frame and a rear frame; the end of the claw is laterally hinged on the claw frame, and the claw frame is a horizontal U-shaped structure; the claw frame is installed on the front frame, the longitudinal interface of the front frame is L-shaped, and its bottom is connected to the rear frame; a hydraulic cylinder is installed inside the rear frame, and the push rod in the hydraulic cylinder passes through the front frame and the claw frame and is located in the center of the claw; an operating handle is provided on the rear frame for controlling the extension and retraction of the hydraulic cylinder; the motor is arranged on the rear frame, and the motor is used to drive the oil pump to transport the hydraulic oil in the oil tank to the hydraulic cylinder through the pressure regulating valve and the reversing valve; the operating handle controls the reversing valve for controlling the extension and retraction of the hydraulic cylinder.

2. A heavy-duty hydraulic puller device according to claim 1, characterized in that: The clamping claw is a three-claw clamping claw, and the three claws are respectively located at the top and two sides.

3. A heavy-duty hydraulic puller device according to claim 1, characterized in that: Rollers are installed under the front frame and the rear frame, and the rollers can roll on the tracks under the puller device.

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