Dismounting tool for front suspension oil seal seat and rear suspension oil seal seat of mining dump truck

Abstract

The utility model discloses a disassembling tool for front and rear suspension oil seal seats of a mining dump truck, which belongs to the technical field of oil seal disassembling and assembling and comprises a fixing bolt and a stress bolt, and the fixing bolt penetrates through an upper working surface and a lower working surface which are identical in size and then is in threaded connection with a fixing bolt hole in the oil seal seat correspondingly. The stress bolt is in threaded connection with the upper working surface and is rotationally connected with the lower working surface; the oil seal seat is arranged between the suspension shell and the steel core; the oil seal seat is in a circular ring shape. The upper working face is installed on the stress bolt in a threaded mode, the stress bolt is installed on the lower working face in a rotating mode, the lower working face is supported on the hanging shell, and the three fixing bolts penetrate through the three guide grooves of the upper working face and the lower working face respectively and are aligned with the fixing bolt holes in the oil seal bases respectively and connected with the fixing bolt holes in a threaded mode. The screwing rod is held by a hand to rotate the stress bolt, the front end ball head of the stress bolt abuts against the lower working face to rotate, the stress bolt is continuously rotated, and the upper working face drives the lower working face to lift out the oil seal base.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil seal disassembly and assembly, and particularly relates to a disassembly tool for the front and rear suspension oil seal seats of a mining dump truck. Background Technique

[0002] The statements in this part only provide background technical information related to the utility model, and do not necessarily constitute prior art.

[0003] The mining dump truck is the main equipment in open-pit coal mines. Due to the extremely poor working road conditions of the mining dump truck, the front and rear suspensions of the mining dump truck (such as the BELAZ75306 model) are prone to failures in the complex working environment of the mine.

[0004] The front and rear suspensions of the mining dump truck (such as the BELAZ75306 model) mainly include accessories such as a suspension housing, a sealing ring, and an oil seal seat. Among them, the sealing ring requires the oil seal seat to be embedded between the housing and the working surface of the steel core to achieve pressing and sealing, ensuring that the entire suspension does not leak oil and ensuring the sealing effect of the sealing ring. When a failure occurs in the front and rear suspensions of the mining dump truck (such as the BELAZ75306 model), maintenance is required. Since the oil seal seat extends deep between the suspension housing and the steel core, and the upper surface of the oil seal seat has a certain depth from the surface of the suspension housing, it is impossible to directly remove the oil seal seat from between the suspension housing and the steel core.

[0005] The traditional maintenance process is to turn the front and rear suspensions in one direction and perform knocking, and cooperate with special equipment such as overhead cranes for joint operations to remove the oil seal seat from the suspension housing. This method has the technical problems of being very difficult to disassemble and assemble the oil seal seat during each maintenance operation, high labor intensity, time-consuming and laborious, and easy to cause damage to the oil seal seat. Content of the Utility Model

[0006] In view of the above problems, the utility model provides a disassembly tool for the front and rear suspension oil seal seats of a mining dump truck, which can easily remove the oil seal seat through bolt connection, reduce labor intensity, improve maintenance efficiency, ensure maintenance safety, and avoid damage to the oil seal seat caused by knocking.

[0007] To achieve the above object, the utility model adopts the following technical solutions:

[0008] A disassembly tool for the front and rear suspension oil seal seats of a mining dump truck includes a fixing bolt and a stress bolt. The fixing bolt passes through the upper working surface and the lower working surface of the same size and is threadedly connected to the fixing bolt hole on the oil seal seat correspondingly; the stress bolt is threadedly connected to the upper working surface and rotatably connected to the lower working surface; the oil seal seat is installed between the suspension housing and the steel core; the oil seal seat is circular.

[0009] Preferably, there are three fixing bolt holes; the fixing bolt holes are used in combination with the fixing bolts, the centers of the three fixing bolt holes are on the same arc line, and the angle between the lines connecting the centers of the three fixing bolt holes and the centers of the arc lines is 120 degrees.

[0010] Preferably, the upper working surface and the lower working surface are both Y-shaped, and are both composed of three straight plates of the same size fixedly connected by a circular plate; the center lines of the three straight plates intersect at the center of the circular plate and form an angle of 120 degrees; the length from one end of the three straight plates away from the circular plate to the circular plate is greater than the radius of the suspension shell.

[0011] Preferably, a guide groove is formed at one end of the straight plate away from the circular plate, and the width of the guide groove is greater than the diameter of the screw rod of the fixing bolt and smaller than the diameter of the tail cap of the fixing bolt.

[0012] Preferably, a bolt hole is opened at the center of the circular plate of the upper working surface, and an internal thread is arranged in the bolt hole to match and be used with the stressed bolt.

[0013] Preferably, a rotating hole is opened at the center of the circular plate of the lower working surface, the front end of the force-bearing bolt is fixedly connected to the ball head, the rear end is the tail cap of the force-bearing bolt, and the ball head is arranged in the rotating hole.

[0014] Preferably, a through hole is opened on the tail cap of the stressed bolt, a twisting rod is arranged in the through hole, anti-slip ends are fixedly arranged at both ends of the twisting rod, the diameter of the through hole is larger than the diameter of the twisting rod, and the diameter of the anti-slip end is larger than the diameter of the through hole.

[0015] Compared with the prior art, the utility model has the following advantages and positive effects:

[0016] The utility model installs the upper working surface on the stress bolt by thread, and rotates and installs the stress bolt on the lower working surface, so that the lower working surface is supported on the suspension shell and the steel core, and three fixing bolts are respectively passed through the three guide grooves of the upper working surface and the lower working surface, so that each of them is aligned with a fixing bolt hole on the oil seal seat and is threadedly connected, and the stress bolt is rotated by holding the twisting rod, so that the front end ball head of the stress bolt supports the lower working surface for rotation, and the stress bolt is continuously rotated, and the upper working surface drives the lower working surface to lift the oil seal seat; the utility model does not need to flip the front and rear suspensions and then perform knocking operations to take out the oil seal seat, and only one person is required to operate to easily take out the oil seal seat through bolt connection, which greatly reduces labor intensity, improves maintenance efficiency, ensures maintenance safety, and avoids damage to the oil seal seat caused by knocking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0018] Figure 1 It is a schematic cross-sectional view of the oil seal seat being disassembled by the disassembly tool according to an embodiment of the present utility model;

[0019] Figure 2 It is a schematic overall view of the disassembly tool according to an embodiment of the present utility model;

[0020] Figure 3 It is a top view of the oil seal seat according to an embodiment of the present utility model installed between the suspension housing and the steel core;

[0021] In the figure:

[0022] 1. Fixed bolt; 2. Force-bearing bolt; 21. Ball head; 3. Turning rod; 4. Upper working surface; 41. Circular plate; 42. Straight plate; 43. Guide groove; 5. Lower working surface; 6. Oil seal seat; 61. Fixed bolt hole; 7. Suspension housing; 8. Steel core. Detailed implementation mode

[0023] It should be noted that the following detailed description is illustrative and aims to provide further explanation of the present utility model. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0024] The following combines the drawings to elaborate on the present utility model. A disassembly tool for the front and rear suspension oil seal seats of a mining dump truck disclosed in this embodiment, as Figure 1 , Figure 2 shown, includes three fixed bolts 1 and one force-bearing bolt 2. The fixed bolts 1 pass through the upper working surface 4 and the lower working surface 5 which are of the same size. The force-bearing bolt 2 is threadedly connected to the upper working surface 4 and rotatably connected to the lower working surface 5; the three fixed bolts 1 are threadedly connected to the three fixed bolt holes 61 on the oil seal seat 6 one by one; the oil seal seat 6 is circular ring-shaped and is tightly installed in the circular ring-shaped space between the suspension housing 7 and the steel core 8.

[0025] As Figure 2 shown, in this embodiment, both the upper working surface 4 and the lower working surface 5 are in a Y shape and are each composed of a circular plate 41 fixedly connecting three straight plates 42 of the same size; among them, the center lines of the three straight plates 42 intersect at the center of the circular plate 41 and form an included angle of 120 degrees. A bolt hole is opened at the center of the circular plate 41 of the upper working surface 4, and an internal thread is provided in the bolt hole, which is used in matching with the external thread of the force-bearing bolt 2; a rotating hole is opened at the center of the circular plate 41 of the lower working surface 5. The front end of the force-bearing bolt 2 is fixedly connected with a ball head 21, and the rear end is a force-bearing bolt end cap. The ball head 21 is arranged in the rotating hole, which enables the force-bearing bolt 2 to rotate relative to the lower working surface 5. The length from the end of the three straight plates 42 far away from the circular plate to the circular plate is greater than the radius of the suspension housing, which enables the lower working surface to rest on the suspension housing.

[0026] In this embodiment, as Figure 2 shown, a guide groove 43 is formed at one end of the straight plate 42 away from the circular plate 41. The width of the guide groove 43 is greater than the diameter of the screw of the fixing bolt 1 and less than the diameter of the fixing bolt cap at the rear end of the fixing bolt 1. The function of the fixing bolt cap is to limit the fixing bolt 1 from disengaging from the straight plate 42 downward from the guide groove 43. The function of the guide groove 43 is to enable the disassembly tool to adjust the position of the fixing bolt 1 in the guide groove 43 when facing oil seal seats of different sizes, so as to be able to perform disassembly operations on oil seal seats of different sizes.

[0027] In this embodiment, as Figure 1 、 Figure 2 shown, a through hole is formed in the force-bearing bolt cap of the force-bearing bolt 2, and a screwing rod 3 is arranged in the through hole. Anti-disengagement ends are fixedly arranged at both ends of the screwing rod 3. The diameter of the through hole is greater than the diameter of the screwing rod 3, and the diameter of the anti-disengagement end is greater than the diameter of the through hole. The screwing rod 3 can reciprocate in the through hole but will not disengage from the through hole.

[0028] In this embodiment, as Figure 3 shown, three fixing bolt holes 61 are formed in the oil seal seat 6. The fixing bolt holes are used in matching with the fixing bolts 1, and the centers of the three fixing bolt holes 61 are on the same arc. The included angle between the connecting lines from the centers of the three fixing bolt holes to the center of the arc is 120 degrees.

[0029] In this embodiment, when using the disassembly tool for the front and rear suspension oil seal seats of the dump truck to disassemble the oil seal seat 6 from the suspension housing, the operator places the lower working surface 5 on the suspension housing 7. First, the upper working surface 4 is moved away from the lower working surface 5, that is, there is a distance between the upper working surface 4 and the lower working surface 5 where they do not contact on the force-bearing bolt 2. Then, the straight plates of the upper working surface 4 and the lower working surface 5 are aligned, the guide grooves are aligned, and then the three fixing bolts 1 are respectively passed through the three guide grooves of the upper working surface 4 and the lower working surface 5.

[0030] Then, according to the size of the oil seal seat 6, the three fixing bolts 1 are moved in their respective guide grooves so that each of them aligns with a fixing bolt hole, and then each of them is tightened. It can be understood that the depths of the three fixing bolt holes are the same.

[0031] The operator can rotate the force-bearing bolt 2 by holding the screwing rod 3. Since the ball head 21 of the force-bearing bolt 2 abuts against the lower working surface and rotates, the rotation of the force-bearing bolt 2 will drive the upper working surface 4 to continuously move upward. And because the bottom surface of the lower working surface 5 abuts against the suspension housing, gradually, under the restriction of the fixing bolt 1, by continuously rotating the force-bearing bolt 2, the upper working surface 4 drives the fixing bolt 1 to drive the oil seal seat 6 to move upward and be lifted out.

[0032] This disassembly method can easily remove the oil seal seat through bolt connection, without the need to turn the front and rear suspensions over and perform knocking operations to remove the oil seal seat. Only one person is required to complete the operation, greatly reducing the labor intensity, improving the maintenance efficiency, ensuring maintenance safety, and avoiding damage to the oil seal seat caused by knocking.

[0033] Although the specific implementation manners of the present invention have been described above in conjunction with the accompanying drawings, it is not a limitation to the protection scope of the present invention. Those skilled in the art should understand that based on the technical solutions of the present invention, various modifications or deformations that can be made without creative efforts by those skilled in the art are still within the protection scope of the present invention.

Claims

1. A tool for removing the front and rear suspension oil seal seats of a mining dump truck, characterized in that: It includes fixing bolts and stress bolts. The fixing bolts pass through the upper working surface and the lower working surface of the same size and are threadedly connected with the fixing bolt holes on the oil seal seat. The stress bolts are threadedly connected with the upper working surface and rotationally connected with the lower working surface. The oil seal seat is installed between the suspension shell and the steel core. The oil seal seat is in a circular ring shape.

2. A tool for removing the front and rear suspension oil seal seats of a mining dump truck as claimed in claim 1, characterized in that: There are three fixing bolt holes; the fixing bolt holes are used in combination with the fixing bolts, the centers of the three fixing bolt holes are on the same arc line, and the angle between the lines connecting the centers of the three fixing bolt holes and the centers of the arc lines is 120 degrees.

3. A tool for removing the front and rear suspension oil seal seats of a mining dump truck as claimed in claim 1, characterized in that: The upper working surface and the lower working surface are both Y-shaped, and are both composed of three straight plates of the same size fixedly connected by a circular plate; the center lines of the three straight plates intersect at the center of the circular plate and form an angle of 120 degrees; the length from one end of the three straight plates away from the circular plate to the circular plate is greater than the radius of the suspension shell.

4. A tool for removing the front and rear suspension oil seal seats of a mining dump truck as claimed in claim 3, characterized in that: A guide groove is formed at one end of the straight plate away from the circular plate, and the width of the guide groove is greater than the diameter of the screw rod of the fixing bolt and smaller than the diameter of the tail cap of the fixing bolt.

5. A tool for removing the front and rear suspension oil seal seats of a mining dump truck as claimed in claim 3, characterized in that: A bolt hole is opened at the center of the circular plate of the upper working surface, and an internal thread is arranged in the bolt hole to match and be used with the stressed bolt.

6. A tool for removing the front and rear suspension oil seal seats of a mining dump truck as claimed in claim 3, characterized in that: A rotation hole is opened at the center of the circular plate of the lower working surface, the front end of the force-bearing bolt is fixedly connected to the ball head, the rear end is the tail cap of the force-bearing bolt, and the ball head is arranged in the rotation hole.

7. A tool for removing the front and rear suspension oil seal seats of a mining dump truck as claimed in claim 6, characterized in that: A through hole is formed on the tail cap of the stressed bolt, a twisting rod is arranged in the through hole, anti-slip ends are fixedly arranged at both ends of the twisting rod, the diameter of the through hole is larger than the diameter of the twisting rod, and the diameter of the anti-slip end is larger than the diameter of the through hole.

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