Compressor impeller assembling tool

Abstract

The utility model relates to a compressor impeller assembling tool, and relates to the technical field of railway engineering. The compressor impeller assembling tool comprises the connector, the screw rod, the nut and the first sleeve, the nut can move along the screw rod by screwing the nut arranged on the screw rod in a sleeving mode, so that acting force is exerted on the first sleeve arranged on the screw rod in a sleeving mode, and the inner diameter of the first sleeve is larger than the diameter of a motor shaft rod. The motor shaft rod can be inserted into the first sleeve, so that the first sleeve can continuously extrude the impeller on the motor shaft rod, the impeller is pressed into the motor shaft rod, and press fitting of the impeller is completed. The compressor impeller assembling tool has the advantages of being simple in structure, high in reliability and low in manufacturing cost.

Description

Technical Field

[0001] The utility model relates to the technical field of railway engineering, in particular to a compressor impeller assembly tool. Background Art

[0002] During normal operation, electric locomotives need to use compressed air to operate the pneumatic parts of the locomotive. In order to obtain compressed air, the locomotive is equipped with an air compressor. The compressor impeller is an important component of the compressor. The impeller and the motor shaft are pressed together through interference fit. Due to the lack of special pressing tools, the pressing work is currently carried out by hammering, which is labor-intensive and has safety hazards. Due to the different manual operation methods during the knocking process, the force and angle are uncontrollable, which often causes damage to the impeller and the motor shaft, resulting in the compressor shutting down due to cracking, breakage, loosening and other faults of the impeller caused by high-speed rotation during normal operation. Once the compressor shuts down, it will have a serious impact on the normal operation of the locomotive and even affect the safety of the entire train operation. Utility Model Content

[0003] The utility model provides a compressor impeller assembly tool, which can conveniently press-fit the compressor impeller, reduce labor intensity and avoid damage to the compressor.

[0004] The utility model provides a compressor impeller assembly tool, comprising:

[0005] A connector, the connector being connected to a motor shaft of the compressor;

[0006] A screw, one end of which is detachably connected to the connector;

[0007] a nut, the nut being sleeved on the screw; and

[0008] A first sleeve, wherein the inner diameter of the first sleeve is larger than the diameter of the motor shaft, the screw rod passes through the first sleeve, and the nut is located on the side of the first sleeve away from the connector to drive the end of the first sleeve away from the nut to abut against the impeller on the motor shaft.

[0009] In one embodiment, the compressor impeller assembly tool also includes a second sleeve and a thrust bearing, the first sleeve is arranged in the second sleeve, the thrust bearing is arranged between the first sleeve and the second sleeve, the screw passes through the first sleeve, the second sleeve and the thrust bearing, and the second sleeve is located between the first sleeve and the nut.

[0010] In one embodiment, the second sleeve includes a barrel and a handle, and the handle is disposed on the surface of the barrel.

[0011] In one embodiment, the inner diameter of the end of the cylinder away from the nut is larger than the inner diameter of the end of the cylinder close to the nut.

[0012] In one embodiment, the inner diameter of the end of the cylinder close to the nut is larger than the outer diameter of the first sleeve.

[0013] In one embodiment, the outer diameter of the thrust bearing is smaller than the outer diameter of the first sleeve.

[0014] In one embodiment, one end of the first sleeve protrudes from the second sleeve.

[0015] In one embodiment, the connecting head includes a screw and a third sleeve, the third sleeve is provided with a thread, one end of the screw is threadedly connected to the third sleeve, the screw is connected to the third sleeve, and one end of the screw protrudes from the third sleeve and is connected to the motor shaft.

[0016] In one embodiment, the third sleeve is provided with a first through hole and a second through hole connected to each other, the aperture of the first through hole is larger than the aperture of the second through hole, one end of the screw is arranged in the first through hole, and the screw passes through the second through hole.

[0017] In one embodiment, the screw rod comprises a rod body and a hexagonal head, and the hexagonal head is arranged at an end of the rod body away from the connecting head.

[0018] Compared with the prior art, the utility model has the advantage that by screwing the nut sleeved on the screw rod, the nut can be moved along the screw rod, thereby exerting a force on the first sleeve also sleeved on the screw rod, the inner diameter of the first sleeve is larger than the diameter of the motor shaft rod, and the motor shaft rod can be inserted into the first sleeve, so that the first sleeve can continuously squeeze the impeller on the motor shaft rod, press the impeller into the motor shaft rod, and complete the press-fitting of the impeller. The compressor impeller assembly tool of the utility model has the advantages of simple structure, high reliability, and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the compressor impeller assembly tool before being connected to the motor shaft in one embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of a compressor impeller assembly tool in another embodiment of the utility model;

[0022] Figure 3 yes Figure 2Exploded view of the compressor impeller assembly tooling;

[0023] Figure 4 is a cross-sectional view of a first sleeve and a second sleeve in an embodiment of the utility model;

[0024] Figure 5 It is a cross-sectional view of an exploded connector in an embodiment of the present utility model.

[0025] Reference numerals:

[0026] 1. Connector; 11. Screw; 12. Third sleeve; 121. First through hole; 122. Second through hole; 2. Screw; 21. Rod body; 22. Hexagonal head; 3. Nut; 4. First sleeve; 5. Second sleeve; 51. Cylinder body; 52. Handle; 6. Thrust bearing; 100. Motor shaft; 200. Impeller. DETAILED DESCRIPTION

[0027] The utility model will be further described below in conjunction with the accompanying drawings.

[0028] like Figure 1 As shown, a compressor impeller assembly tool of an embodiment of the utility model includes a connector 1, a screw 2, a nut 3 and a first sleeve 4. The connector 1 is connected to the motor shaft 100 of the compressor, one end of the screw 2 is threadedly connected to the connector 1, the nut 3 is sleeved on the screw 2, the inner diameter of the first sleeve 4 is larger than the diameter of the motor shaft 100, the screw 2 passes through the first sleeve 4, and the nut 3 is located on the side of the first sleeve 4 away from the connector 1 to drive the end of the first sleeve 4 away from the nut 3 to abut against the impeller 200 on the motor shaft 100. By screwing the nut 3 sleeved on the screw rod 2, the nut 3 can be moved along the screw rod 2, thereby applying a force to the first sleeve 4 also sleeved on the screw rod 2. The inner diameter of the first sleeve 4 is larger than the diameter of the motor shaft 100, and the motor shaft 100 can be inserted into the first sleeve 4, so that the first sleeve 4 can continuously squeeze the impeller 200 on the motor shaft 100, press the impeller 200 into the motor shaft 100, and complete the press-fitting of the impeller 200. The compressor impeller assembly tool of this embodiment has the advantages of simple structure, high reliability, and low manufacturing cost.

[0029] like Figure 2 and Figure 3As shown, in another embodiment, the compressor impeller assembly tool further includes a second sleeve 5 and a thrust bearing 6, the first sleeve 4 is disposed in the second sleeve 5, the thrust bearing 6 is disposed between the first sleeve 4 and the second sleeve 5, the screw 2 passes through the first sleeve 4, the second sleeve 5 and the thrust bearing 6, and the second sleeve 5 is located between the first sleeve 4 and the nut 3. The second sleeve 5 directly contacts the nut 3 instead of the first sleeve 4, and the thrust bearing 6 is a prior art, which can withstand a large axial load, so that the first sleeve 4 will not rotate due to the rotation of the nut 3 and greatly reduce the friction generated during the rotation, making the operation more labor-saving while avoiding large wear between components.

[0030] like Figure 3 As shown, the second sleeve 5 includes a barrel 51 and a handle 52, and the handle 52 is arranged on the surface of the barrel 51. By providing the handle 52, the compressor impeller assembly tool is easy to grasp and can be conveniently carried. When performing the press-fitting operation, the tool can be made more stable by grasping the handle 52, which is conducive to the press-fitting operation.

[0031] like Figure 4 As shown, the inner diameter of the end of the cylinder 51 away from the nut 3 is larger than the inner diameter of the end of the cylinder 51 close to the nut 3. The opening end of the cylinder 51 of this shape is larger, which is convenient for the insertion of the first sleeve 4.

[0032] Furthermore, the inner diameter of the end of the cylinder 51 close to the nut 3 is larger than the outer diameter of the first sleeve 4 , so that the first sleeve 4 will not contact the inner wall of the cylinder 51 , and the first sleeve 4 can remain stable in the cylinder 51 .

[0033] Furthermore, the outer diameter of the thrust bearing 6 is smaller than the outer diameter of the first sleeve 4, ensuring that the thrust bearing 6 can be stably placed in the barrel 51 and clamped between the barrel 51 and the first sleeve 4, transmitting the force along the length direction of the screw 2 to the first sleeve 4 to complete the press-fitting operation of the impeller 200.

[0034] like Figure 2 As shown, one end of the first sleeve 4 protrudes from the second sleeve 5. During the press-fitting process of the impeller 200, the contact between the first sleeve 4 and the impeller 200 can be directly observed. The press-fitting process of the impeller 200 can be observed in real time, abnormalities can be discovered in time, and the smooth completion of the press-fitting can be ensured.

[0035] like Figure 5 As shown, the connector 1 includes a screw 11 and a third sleeve 12, wherein the third sleeve 12 is provided with a thread, one end of the screw rod 2 is threadedly connected to the third sleeve 12, the screw 11 is connected to the third sleeve 12, and one end of the screw 11 protrudes from the third sleeve 12 and is connected to the motor shaft 100. The screw 11 and the third sleeve 12 are both common mechanical parts, and the two together constitute the connector 1, which is low in cost.

[0036] Furthermore, the third sleeve 12 is provided with a first through hole 121 and a second through hole 122 connected to each other, the aperture of the first through hole 121 is larger than the aperture of the second through hole 122, one end of the screw rod 2 is arranged in the first through hole 121, and the screw 11 passes through the second through hole 122, so that the screw 11 fixes the connector 1 as a whole to the motor shaft 100. A part of the space of the second through hole 122 is used to accommodate the head of the screw 11, and a part of the space is used to accommodate one end of the screw rod 2, so as to achieve the fixation of the screw rod 2.

[0037] like Figure 3 As shown, the screw rod 2 includes a rod body 21 and a hexagonal head 22, and the hexagonal head 22 is arranged at one end of the rod body 21 away from the connector 1. When the nut 3 is screwed, the nut 3 will cause the screw rod 2 to also have a tendency to rotate due to friction. If the screw rod 2 rotates with the nut 3, the nut 3 will not be able to move well along the screw rod 2, so it is necessary to prevent the screw rod 2 from rotating. By clamping the hexagonal head 22, the screw rod 2 can be well prevented from rotating, ensuring that the press-fitting of the impeller 200 is completed smoothly.

[0038] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A compressor impeller assembly tool, characterized in that: include: A connector, the connector being connected to a motor shaft of the compressor; A screw, one end of which is detachably connected to the connector; a nut, the nut being sleeved on the screw; and A first sleeve, wherein the inner diameter of the first sleeve is larger than the diameter of the motor shaft, the screw rod passes through the first sleeve, and the nut is located on the side of the first sleeve away from the connector to drive the end of the first sleeve away from the nut to abut against the impeller on the motor shaft.

2. The compressor impeller assembly tool according to claim 1, characterized in that: It also includes a second sleeve and a thrust bearing, the first sleeve is arranged in the second sleeve, the thrust bearing is arranged between the first sleeve and the second sleeve, the screw passes through the first sleeve, the second sleeve and the thrust bearing, and the second sleeve is located between the first sleeve and the nut.

3. The compressor impeller assembly tool according to claim 2, characterized in that: The second sleeve includes a cylinder body and a handle, and the handle is arranged on the surface of the cylinder body.

4. The compressor impeller assembly tool according to claim 3, characterized in that: The inner diameter of the end of the cylinder away from the nut is larger than the inner diameter of the end of the cylinder close to the nut.

5. The compressor impeller assembly tool according to claim 4, characterized in that: The inner diameter of the cylinder body at one end close to the nut is larger than the outer diameter of the first sleeve.

6. The compressor impeller assembly tool according to claim 5, characterized in that: The outer diameter of the thrust bearing is smaller than the outer diameter of the first sleeve.

7. The compressor impeller assembly tool according to claim 2, characterized in that: One end of the first sleeve protrudes from the second sleeve.

8. The compressor impeller assembly tool according to any one of claims 1 to 7, characterized in that: The connecting head includes a screw and a third sleeve, wherein the third sleeve is provided with a thread, one end of the screw rod is threadedly connected to the third sleeve, the screw is connected to the third sleeve, and one end of the screw protrudes from the third sleeve and is connected to the motor shaft.

9. The compressor impeller assembly tool according to claim 8, characterized in that: The third sleeve is provided with a first through hole and a second through hole connected to each other, the aperture of the first through hole is larger than the aperture of the second through hole, one end of the screw rod is arranged in the first through hole, and the screw passes through the second through hole.

10. The compressor impeller assembly tool according to any one of claims 1 to 7, characterized in that: The screw rod comprises a rod body and a hexagonal head, and the hexagonal head is arranged at one end of the rod body away from the connecting head.

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