Dismounting tool for bushing

Abstract

The utility model relates to the technical field of diesel engine repairing devices, and discloses a dismounting tool for a bushing, which comprises a connecting rod and a clamping mechanism, the clamping assembly comprises a rotating shaft and clamping blocks, when the device is used, only the two clamping blocks need to swing inwards around the rotating shaft, under the control of the connecting rod, the clamping parts of the clamping blocks stretch into the lower portion of the communicating hole of the lining, then the clamping blocks are released, the clamping parts of the clamping blocks can be automatically clamped to the bottom face of the lining, and therefore the clamping effect of the device is improved. And finally, the connecting rod is controlled to ascend to complete disassembly of the bush, the whole operation process is very convenient and fast, and due to the fact that only the clamping part of the clamping block protrudes out of the lower portion of the bush, the clamping block can be prevented from making contact with a high-pressure pump ejector rod below the bush in the swinging process, and the high-pressure pump ejector rod cannot be damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel engine repair devices, in particular to a disassembly tool for a bushing. Background Art

[0002] When overhauling a diesel engine, it is necessary to remove the shaft sleeve from the engine body and replace the rolling bearing inside the sleeve. Since the sleeve is arranged inside the engine body, it is very troublesome to rely on workers to manually remove the sleeve from the engine body. At present, the sleeve removal is mostly completed by a clamping block and a guide rod. Specifically, the clamping block is rotatably connected to one end of the guide rod. When disassembling, the clamping block is first rotated to an inclined state and extended under the connecting hole of the sleeve, and then the clamping block is swung so that the top surface of the clamping block abuts against the bottom surface of the sleeve, and finally the clamping block is taken out together with the sleeve through the guide rod.

[0003] Although this disassembly tool can remove the bushing from the body, since a high-pressure pump push rod is provided under the bushing, the position of the high-pressure pump push rod needs to be manually adjusted before the clamping block is inserted into the bushing hole, which makes it very inconvenient during disassembly and assembly. In addition, the rotation angle of the high-pressure pump push rod is limited. When the clamping block is inserted under the bushing hole and swings, it is still easy to cause the high-pressure pump rod to collide with the clamping block, causing damage to the sealing surface at the top of the high-pressure pump rod. Utility Model Content

[0004] The purpose of the utility model is to provide a disassembly tool for a bushing, which can not only conveniently take the bushing out of a machine body, but also will not cause damage to a high-pressure pump push rod below the bushing.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a disassembly tool for a bushing, comprising: a connecting rod and a clamping mechanism; the connecting rod extends along a first direction; the clamping mechanism comprises a crossbeam and two clamping assemblies; the crossbeam extends along a second direction, and the crossbeam is connected to one end of the connecting rod on one side of the first direction; the two clamping assemblies are arranged on the crossbeam at intervals along the second direction, the clamping assembly comprises a rotating shaft and a clamping block, the rotating shaft is arranged on the crossbeam and extends along a third direction, the clamping block comprises a connecting portion, an extending portion and a clamping portion, the connecting portion and the clamping portion are arranged on one side of the extending portion, the connecting portion is rotatably connected to the rotating shaft, and as the connecting portion rotates, the clamping portion can rotate in a plane intersecting the first direction and the second direction.

[0006] Optionally, a bracket is further included, which is used to be placed on the body, and the bracket has a mounting hole extending and penetrating along the first direction, and the connecting rod is arranged in the mounting hole and can slide along the mounting hole in the first direction.

[0007] Optionally, an adjusting nut is also included, the outer peripheral side surface of the connecting rod has an external thread, the adjusting nut is sleeved on the connecting rod and is threadedly connected to the connecting rod, the connecting rod passes through the adjusting nut and the mounting hole in sequence, and as the adjusting nut is rotated, the connecting rod can move along the first direction.

[0008] Optionally, the crossbeam has two mounting grooves on the other side of the first direction, the two mounting grooves are arranged at intervals along the second direction, and the rotating shaft is arranged in the mounting grooves.

[0009] Optionally, the mounting groove passes through the crossbeam along the first direction.

[0010] Optionally, the clamping block also has a limiting portion, and one end of the connecting portion away from the clamping portion protrudes from the mounting groove. The limiting portion is arranged at the end of the connecting portion away from the clamping portion and is located on one side of the connecting portion in the third direction. As the connecting portion rotates, the bottom surface of the limiting portion can abut against the top surface of the beam.

[0011] Optionally, the crossbeam has a connecting hole extending along the first direction, one end of the connecting rod is inserted into the connecting hole, the two mounting grooves are respectively arranged on both sides of the connecting hole in the second direction, and the rotating shafts in the two mounting grooves are symmetrically arranged relative to the connecting hole.

[0012] Optionally, an extension direction of the clamping portion is perpendicular to an extension direction of the extending portion.

[0013] Compared with the prior art, the utility model embodiment of a disassembly tool for a bushing has the beneficial effect that when the device is in use, it is only necessary to swing the two clamping blocks inward around the rotating axis, and under the control of the connecting rod, the clamping portion of the clamping block is extended to the bottom of the connecting hole of the bushing, and then the clamping block is released. The clamping portion of the clamping block can be automatically clamped to the bottom surface of the bushing, and finally the bushing is disassembled by controlling the connecting rod to rise. The whole operation process is very convenient, and because only the clamping portion of the clamping block protrudes from the bottom of the bushing, it can avoid contact with the high-pressure pump top rod under the bushing during the swinging process of the clamping block, and will not cause damage to the high-pressure pump top rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the embodiment of the utility model when the removal tool for the bushing is extended into the bushing;

[0015] Figure 2 It is a structural schematic diagram of the bushing disassembly tool of the embodiment of the utility model when it is engaged with the bushing;

[0016] Figure 3This is a schematic diagram of the connection structure between the rotating shaft and the crossbeam in an embodiment of the utility model;

[0017] Figure 4 It is a front view of the clamping block of the embodiment of the utility model;

[0018] Figure 5 It is a side view of the clamping block according to an embodiment of the utility model.

[0019] In the figure, 1, connecting rod; 2, clamping mechanism; 21, crossbeam; 211, mounting groove; 212, connecting hole; 22, clamping assembly; 221, rotating shaft; 222, clamping block; 2221, connecting part; 2222, extending part; 2223, clamping part; 2224, limiting part; 3, bracket; 31, mounting hole; 4, adjusting nut; 5, body; 6, bushing; 7, high-pressure pump top rod; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0023] like Figure 1-Figure 4As shown, a disassembly tool for a bushing 6 according to an embodiment of the utility model comprises: a connecting rod 1 and a clamping mechanism 2; the connecting rod 1 extends along a first direction X; the clamping mechanism 2 comprises a crossbeam 21 and two clamping assemblies 22; the crossbeam 21 extends along a second direction Y, and the crossbeam 21 is connected to one end of the connecting rod 1 on one side of the first direction X; the two clamping assemblies 22 are arranged on the crossbeam 21 at intervals along the second direction Y, the clamping assembly 22 comprises a rotating shaft 221 and a clamping block 222, the rotating shaft 221 is arranged on the crossbeam 21 and extends along a third direction Z, the clamping block 222 comprises a connecting portion 2221, an extending portion 2222 and a clamping portion 2223, the connecting portion 2221 and the clamping portion 2223 are arranged on one side of the extending portion 2222, the connecting portion 2221 is rotatably connected to the rotating shaft 221, and as the connecting portion 2221 rotates, the clamping portion 2223 can rotate in a plane intersecting the first direction X and the second direction Y.

[0024] Based on the above scheme, when the device is in use, it is only necessary to swing the two clamping blocks 222 inward around the rotating shaft 221, and under the control of the connecting rod 1, make the clamping part 2223 of the clamping block 222 extend under the connecting hole of the bushing 6, and then release the clamping block 222. The clamping part 2223 of the clamping block 222 will rotate around the rotating shaft 221 under the action of its own weight, and can automatically clamp to the bottom surface of the bushing 6. Finally, the bushing 6 is disassembled by controlling the connecting rod 1 to rise. The whole operation process is very convenient, and because only the clamping part 2223 of the clamping block 222 protrudes from the bottom of the bushing 6, it can avoid contact with the high-pressure pump top rod 7 under the bushing 6 during the swinging process of the clamping block 222, and will not cause damage to the high-pressure pump top rod 7.

[0025] like Figure 1 As shown, in order to be able to smoothly disassemble the bushing 6 and prevent the bushing 6 from falling off from the clamping portion 2223, a bracket 3 is also included. The bracket 3 is used to be placed on the body 5. The bracket 3 has a mounting hole 31 extending and penetrating along the first direction X. The connecting rod 1 is arranged in the mounting hole 31 and can slide along the mounting hole 31 in the first direction X. When in use, the bracket 3 is first set on the body 5, and the connecting rod 1 is controlled to slide along the mounting hole 31 in the first direction X to prevent the connecting rod 1 from deviating during movement and causing the bushing 6 to fall off.

[0026] like Figure 1 As shown, in order to facilitate the control of the lifting and lowering speed of the connecting rod 1, it also includes an adjusting nut 4. The outer peripheral side of the connecting rod 1 has an external thread. The adjusting nut 4 is sleeved on the connecting rod 1 and is threadedly connected to the connecting rod 1. The connecting rod 1 passes through the adjusting nut 4 and the mounting hole 31 in sequence. As the adjusting nut 4 is rotated, the connecting rod 1 can move along the first direction X.

[0027] like Figure 3As shown, in order to facilitate the installation of the clamping block 222 , the crossbeam 21 has two installation slots 211 on the other side of the first direction X. The two installation slots 211 are arranged at intervals along the second direction Y, and the rotating shaft 221 is arranged in the installation slots 211 .

[0028] like Figure 3 As shown, in order to facilitate the control of the rotation of the clamping block 222, the installation slot 211 penetrates the beam 21 along the first direction X. When controlling the rotation of the clamping block 222, the installation slot 211 can provide sufficient operating space for workers to control the clamping block 222 to swing inward.

[0029] like Figure 4 and Figure 5 As shown, in order to ensure that the clamping portion 2223 can be accurately clamped on the bottom surface of the bushing 6, the clamping block 222 also has a limiting portion 2224, and the end of the connecting portion 2221 away from the clamping portion 2223 protrudes from the mounting groove 211, and the limiting portion 2224 is arranged at the end of the connecting portion 2221 away from the clamping portion 2223, and is located on the side of the connecting portion 2221 in the third direction Z. With the rotation of the connecting portion 2221, the bottom surface of the limiting portion 2224 can abut against the top surface of the beam 21. When the clamping block 222 is released, the connecting portion 2221 will swing outward around the rotating shaft 221 until the bottom surface of the limiting portion 2224 abuts against the top surface of the beam 21. At this time, the clamping portion 2223 is just clamped on the bottom surface of the bushing 6.

[0030] like Figure 3 As shown, in order to ensure that the bushing 6 does not shift during the removal process, the crossbeam 21 has a connecting hole 212 extending along the first direction X, one end of the connecting rod 1 is inserted into the connecting hole 212, and the two mounting grooves 211 are respectively arranged on both sides of the connecting hole 212 in the second direction Y, and the rotating shafts 221 in the two mounting grooves 211 are symmetrically arranged relative to the connecting hole 212 to ensure that the two clamping parts 2223 support the bushing 6 in the same way to avoid the bushing 6 from shifting during the removal process.

[0031] like Figure 4 As shown, in order to ensure the stability of the bushing 6 when moving, the extending direction of the clamping portion 2223 is perpendicular to the extending direction of the extending portion 2222 to increase the contact area between the clamping portion 2223 and the bushing 6 .

[0032] In summary, the embodiment of the utility model provides a disassembly tool for the bushing 6, which, when in use, only needs to swing the two clamping blocks 222 inward around the rotating shaft 221, and under the control of the connecting rod 1, make the clamping portion 2223 of the clamping block 222 extend under the connecting hole of the bushing 6, and then release the clamping block 222. The clamping portion 2223 of the clamping block 222 will rotate around the rotating shaft 221 under the action of its own weight, and can automatically clamp to the bottom surface of the bushing 6. Finally, the bushing 6 is disassembled by controlling the connecting rod 1 to rise. The whole operation process is very convenient, and because only the clamping portion 2223 of the clamping block 222 protrudes from the bottom of the bushing 6, the clamping block 222 can avoid contact with the high-pressure pump top rod 7 under the bushing 6 during the swinging process, and will not cause damage to the high-pressure pump top rod 7.

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A disassembly tool for a bushing, characterized in that: include: Connecting rod and snap-on mechanism; The connecting rod extends along a first direction; The clamping mechanism comprises a crossbeam and two clamping assemblies; The crossbeam extends along the second direction, and the crossbeam is connected to one end of the connecting rod on one side of the first direction; The two clamping assemblies are arranged on the beam at intervals along the second direction, and the clamping assemblies include a rotating shaft and a clamping block. The rotating shaft is arranged on the beam and extends along the third direction. The clamping block includes a connecting portion, an extending portion and a clamping portion. The connecting portion and the clamping portion are arranged on one side of the extending portion. The connecting portion is rotatably connected to the rotating shaft. As the connecting portion rotates, the clamping portion can rotate in a plane intersecting the first direction and the second direction.

2. The removal tool for the bushing according to claim 1, characterized in that: It also includes a bracket, which is used to be placed on the body, and has a mounting hole extending and penetrating along the first direction. The connecting rod is arranged in the mounting hole and can slide along the mounting hole in the first direction.

3. The removal tool for the bushing according to claim 2, characterized in that: It also includes an adjusting nut, the outer peripheral side of the connecting rod has an external thread, the adjusting nut is sleeved on the connecting rod and is threadedly connected to the connecting rod, the connecting rod passes through the adjusting nut and the mounting hole in sequence, and as the adjusting nut is rotated, the connecting rod can move along the first direction.

4. The removal tool for bushing according to claim 1, characterized in that: The crossbeam has two mounting grooves on the other side of the first direction, the two mounting grooves are arranged at intervals along the second direction, and the rotating shaft is arranged in the mounting grooves.

5. The removal tool for the bushing according to claim 4, characterized in that: The mounting groove penetrates the crossbeam along the first direction.

6. The removal tool for the bushing according to claim 5, characterized in that: The clamping block also has a limiting portion, and one end of the connecting portion away from the clamping portion protrudes from the mounting groove. The limiting portion is arranged at the end of the connecting portion away from the clamping portion and is located on one side of the connecting portion in the third direction. As the connecting portion rotates, the bottom surface of the limiting portion can abut against the top surface of the beam.

7. The removal tool for the bushing according to claim 4, characterized in that: The crossbeam has a connecting hole extending along the first direction, one end of the connecting rod is inserted into the connecting hole, the two mounting grooves are respectively arranged on both sides of the connecting hole in the second direction, and the rotating shafts in the two mounting grooves are symmetrically arranged relative to the connecting hole.

8. The removal tool for a bushing according to any one of claims 1 to 7, characterized in that: An extending direction of the clamping portion is perpendicular to an extending direction of the extending portion.

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