Turbocharger gland nut assembly tool

Abstract

The turbocharger gland nut assembly tool comprises a workbench and further comprises a supporting seat and a positioning part used for being combined with the end of a turbine to limit rotation of the turbine, the supporting seat is fixed to the workbench, one end of the supporting seat is provided with an assembly hole, and the other end of the supporting seat is provided with a nut. And after the positioning component is matched with the assembling hole, the positioning component is fixed with the supporting seat. In the assembling process of the compression nut, the transmission shaft can be limited to rotate.

Description

Technical Field

[0001] The invention relates to the field of turbochargers, and in particular to an assembly tool for a turbocharger compression nut. Background Art

[0002] The turbocharger uses the inertial force of the exhaust gas discharged by the engine to drive the turbine in the turbine chamber, and the turbine drives the coaxial compressor wheel, which compresses and sends air to the cylinder. When the engine speed increases, the exhaust gas discharge speed and the turbine speed also increase synchronously, and the compressor wheel compresses more air into the cylinder. The increase in air pressure and density can burn more fuel. Increasing the amount of fuel and adjusting the engine speed accordingly can increase the engine's output power.

[0003] like Figure 1 The turbocharger shown is usually composed of an intermediate body 1, a bearing 2, a transmission shaft 3, a turbine 4, a volute 5, a shaft seal 6, a gland 7, a pressure wheel 8, a clamping nut 9, a compression shell 10 and other parts. An axial through hole is provided on the intermediate body 1, and the bearing 2 is assembled in the through hole on the intermediate body 1. The transmission shaft 3 passes through the bearing 2 and is exposed to the outside of the intermediate body 1. The turbine 4 is fixed to one end of the transmission shaft 3, the volute 5 surrounds the turbine 4 and is fixed to one end of the intermediate body 1, the shaft seal 6 is loosely sleeved on the transmission shaft 3, and the shaft seal 6 cooperates with a shaft shoulder provided on the transmission shaft 3, the gland 7 is sleeved on the shaft seal 6, and the gland 6 is fixed to the other end of the intermediate body 1, the pressure wheel 8 is sleeved on the transmission shaft 3, and one end of the pressure wheel 8 is against the shaft seal 6. After the clamping nut 9 is threadedly connected to the transmission shaft 3, the pressure wheel 8 is clamped between the clamping nut 9 and the shaft seal 6, and the compression shell 10 is fixed to the gland 7, and the compression shell 10 surrounds the pressure wheel 8.

[0004] For the turbocharger with the above structure, during assembly, the transmission shaft 3 is fixed to the turbine 4, the bearing 2 is fixed to the intermediate body 1, the transmission shaft 3 passes through the bearing 2 and the shaft seal 6, the gland 7 is fixed to the intermediate body 1, the pressure wheel 8 is sleeved on the transmission shaft 3, and the clamping nut 9 is threadedly connected to the transmission shaft 3. Since the transmission shaft 3 can rotate relative to the bearing 2, when tightening the clamping nut 9, a reverse torque needs to be applied to the other end of the transmission shaft 3 so that the transmission shaft 3 remains stationary before the clamping nut 9 can be tightened.

[0005] At present, the method of applying torque to the transmission shaft 3 is to clamp the end of the turbine 4 with a clamping tool with one hand, and to torque the compression nut 9 with a nut tightening tool with the other hand. Since the torque applied to the compression nut 9 is large, the clamping tool needs to have a large clamping force on the turbine 4. In this case, the clamping tool used to clamp the turbine 4 often slips, so tightening the compression nut 9 often requires multiple operations. The above method is not only cumbersome to operate, but also easy to cause damage to the end of the turbine 4. Utility Model Content

[0006] The utility model provides a turbocharger compression nut assembly tool. The utility model can limit the rotation of a transmission shaft during the assembly process of the compression nut.

[0007] The turbocharger locking nut assembly tool comprises a workbench, a support seat, and a positioning component used to combine with the end of the turbine to limit the rotation of the turbine. The support seat is fixed on the workbench, and an assembly hole is provided at one end of the support seat. After the positioning component cooperates with the assembly hole, the positioning component is fixed to the support seat.

[0008] Furthermore, the positioning component includes a first coupling portion and a second coupling portion coupled to the end of the turbine, the outer diameter of the second coupling portion is smaller than the outer diameter of the first coupling portion, the second coupling portion is polygonal or is provided with a groove that is plug-fitted with the end of the turbine.

[0009] Further, the assembly hole includes a first hole matched with the intermediate body in the turbocharger and a second hole matched with the turbine end, and the inner diameter of the first hole is larger than the inner diameter of the second hole.

[0010] Furthermore, the second hole is a polygonal hole, the contour of the first coupling portion is a polygon, and after the first coupling portion is inserted into the polygonal portion of the assembly hole, the positioning component and the support seat are circumferentially fixed.

[0011] Furthermore, a clearance hole is provided on the peripheral surface of the support seat.

[0012] Furthermore, the workbench is provided with a first matching hole, and the other end of the support seat is provided with a second matching hole corresponding to the first matching hole;

[0013] The invention also includes a driving component which drives the positioning component to move after passing through the second matching hole and the first matching hole.

[0014] Furthermore, the driving component is threadedly connected to the first matching hole and / or the second matching hole.

[0015] Furthermore, the driving component includes a push rod and a handle, the push rod is provided with a thread, and the push rod is fixed to the handle.

[0016] Furthermore, it also includes a storage rack, on which are provided a plurality of storage boxes for accommodating positioning components of different models.

[0017] The end of the turbine is combined with the positioning component to restrict rotation, that is, the turbine cannot rotate, and the transmission shaft fixed to the turbine cannot rotate either. At this time, the clamping nut is threadedly connected to the transmission shaft, so that the pressure wheel is clamped between the shaft seal and the clamping nut. After the clamping nut is installed, the intermediate assembly can be pulled out from the support seat. When assembling the clamping nut, the utility model only needs to combine the end of the turbine with the positioning component, which has the advantage of simple operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a cross-sectional diagram of the turbocharger.

[0019] Figure 2 A perspective view of the assembly tool for the turbocharger compression nut.

[0020] Figure 3 A partial cross-sectional view of the turbocharger compression nut assembly tool.

[0021] Figure 4 It is a three-dimensional diagram of the support seat, the positioning component and the driving component.

[0022] Figure 5 It is a cross-sectional view of the support seat, the positioning component and the driving component.

[0023] Figure 6 A three-dimensional diagram of the positioning components.

[0024] Figure 7 It is a cross-sectional view of a support seat, another positioning component and a driving component.

[0025] Markings in the accompanying drawings: intermediate body 1, bearing 2, transmission shaft 3, turbine 4, volute 5, shaft seal 6, gland 7, pressure wheel 8, clamping nut 9, compression shell 10.

[0026] Workbench 11, first matching hole 11a, support seat 12, make way hole 12a, second matching hole 12b, positioning component 13, first combining portion 13a, second combining portion 13b, sleeve 13c, assembly hole 14, first hole 14a, second hole 14b, driving component 15, push rod 15a, handle 15b, storage rack 16, storage box 17. DETAILED DESCRIPTION

[0027] Embodiment 1

[0028] like Figures 1 to 6As shown, the turbocharger locking nut assembly tool of the utility model includes a workbench 11, a support seat 12, and a positioning component 13 used to combine with the end of the turbine 4 to limit the rotation of the turbine 4. The support seat 12 is fixed on the workbench 11, and an assembly hole 14 is provided at one end of the support seat 12. After the positioning component 13 cooperates with the assembly hole 14, the positioning component 13 is fixed to the support seat 12.

[0029] The positioning component 13 includes a first coupling portion 13a and a second coupling portion 13b coupled to the end of the turbine 4. The outer diameter of the second coupling portion 13b is smaller than the outer diameter of the first coupling portion 13a, and the second coupling portion 13b protrudes from the upper surface of the first coupling portion 13a. The assembly hole 14 includes a first hole 14a that matches the intermediate body 1 in the turbocharger and a second hole 14b that matches the end of the turbine 4. The inner diameter of the first hole 14a is larger than the inner diameter of the second hole 14b. Therefore, the assembly hole 14 is a stepped hole. The second coupling portion 13b can be located inside the second hole 14b or outside the second hole 14b. When the second coupling portion 13b can be located inside the second hole 14b, there is a spacing between the second coupling portion 13b and the hole wall surface of the second hole 14b.

[0030] During assembly, the intermediate body 1 is combined with the bearing 2, the transmission shaft 3, the turbine 4, the shaft seal 6, the pressure cover 7, and the pressure wheel 8 to form an intermediate assembly, which is inserted into the assembly hole 14. The end of the turbine 4 is circumferentially fixed with the second hole 14b, and the end face of the intermediate body 1 is supported on the axial end face of the support seat 12. Most of the entire intermediate assembly is accommodated in the first hole 14a, so that the intermediate assembly obtains stable support, thereby providing convenience for the subsequent tightening of the clamping nut 9.

[0031] The circumferential fixing method of the second joint part 13b of the end face of the turbine 4 can be: a polygonal hole is set on the axial end face of the turbine 4, and the polygonal second joint part 13b is plugged in through the polygonal hole. This method is a plug-in structure, so the end of the turbine 4 can be quickly assembled or disassembled with the second joint part 13b. After the end of the turbine 4 is circumferentially fixed to the second joint part 13b, since the turbine 4 cannot rotate, the transmission shaft 3 fixed to the turbine 4 cannot rotate either. At this time, the clamping nut 9 is threadedly connected to the transmission shaft 3, so that the pressure wheel 8 is clamped between the shaft seal 6 and the clamping nut 9. After the clamping nut 9 is installed, the intermediate assembly can be pulled out from the support seat 12.

[0032] In actual operation, due to the different sizes of turbochargers of different models, different types of turbochargers need to use corresponding positioning components 13 to combine with the turbine 4 when assembling the clamping nut 9. Therefore, in this embodiment, the second hole 14b is a polygonal hole, and the outline of the first combining portion 13a is a polygon. After the first combining portion 13a is inserted into the polygonal part of the assembly hole 14, the positioning component 13 and the support seat 12 are circumferentially fixed. This structure not only allows the positioning component 13 and the second hole 14b to form a circumferential positioning, but also the positioning component 13 and the second hole 14b cooperate in a plug-in manner, and the positioning component 13 can be quickly replaced when needed.

[0033] A clearance hole 12a is provided on the circumferential surface of the support seat 12, and the clearance hole 12a is connected with the assembly hole 14. Preferably, the clearance hole 12a is connected with the first hole 14a. Through the clearance hole 12a, when the support seat 12 needs to be moved, the operator's hand cooperates with the clearance hole 12a to facilitate moving the support seat 12. Moreover, when the positioning component 13 cooperates with the end of the turbine 4, if the two are not aligned, observation can be carried out with the help of the clearance hole 12a, thereby achieving the purpose of quickly combining the positioning component 13 with the turbine 4.

[0034] The workbench 11 is provided with a first matching hole 11a, and the other end of the support seat 12 is provided with a second matching hole 12 corresponding to the first matching hole 11a, and further includes a driving component 15 that drives the positioning component 13 to move after passing through the second matching hole 12b and the first matching hole 11a. The driving component 15 can drive the positioning component 13 to move along the second hole 14b. For example, when it is inconvenient to remove the positioning component 13 from the second hole 14b by hand or a tool (such as a clamp), the driving component 15 pushes the positioning component 13 to move, so that the positioning component 13 is exposed outside the second hole 14b, and then the positioning component 13 is removed by hand or a tool.

[0035] The driving component 15 is threadedly connected to the first matching hole 11a and / or the second matching hole 12b. The driving component 15 includes a push rod 15a and a handle 15b. The push rod 15a is provided with threads, and the push rod 15a is fixed to the handle 15b. In this embodiment, the push rod 15a is threadedly connected to the first matching hole 11a. In the above structure, the preferred way is to make the positioning component 13 located in the second hole 14b, and the push rod 15a forms a support for the first joint portion 13a. However, since the lengths of turbochargers of different models are inconsistent, the positioning component 13 is driven to move by rotating the driving component 15, thereby adjusting the position of the positioning component 13.

[0036] The present embodiment further includes a storage rack 16, on which a plurality of storage boxes 17 for accommodating different types of positioning components 13 are disposed. As can be seen from the above, different types of turbochargers may require different types of positioning components 13, so different types of positioning components 13 are classified and placed in the storage boxes 17. When installing the compression nut 9, the required positioning component 13 can be selected from the corresponding storage box 17 and assembled with the assembly hole 14.

[0037] Embodiment 2

[0038] The difference between this embodiment and the first embodiment is that a groove which is plugged into the end of the turbine 4 is provided on the second joint portion 13b, and the groove is a polygonal groove. The circumferential surface of the turbine 4 is a polygon. Therefore, when the turbine 4 is inserted into the polygonal groove, the turbine 4 and the positioning component 13 are circumferentially fixed.

[0039] Embodiment 3

[0040] The present embodiment is different from the first embodiment in that the positioning component 13 only includes a first coupling portion 13a, and a groove which is plugged into and fits with the end of the turbine 4 is provided on the first coupling portion 13. The groove is a polygonal groove, and the circumferential surface of the turbine 4 is a polygon. Therefore, when the turbine 4 is inserted into the polygonal groove, the turbine 4 and the positioning component 13 are circumferentially fixed.

[0041] Embodiment 4

[0042] The difference between this embodiment and the first embodiment is that the positioning member 13 includes a first combining portion 13a and a second combining portion 13b. Figure 7 As shown, the positioning component 13 in this embodiment also includes a sleeve 13c, and the structure of the first combining portion 13a and the second combining portion 13b is the same as that of the first embodiment. The outer diameter of the second combining portion 13b is smaller than the outer diameter of the first combining portion 13a. The second combining portion 13b is polygonal and is fixed to the first combining portion 13a. One end of the sleeve 13c is sleeved on the second combining portion 13b to form a circumferential fixation, and the other end of the sleeve 13c is used to combine with the end of the turbine 4.

[0043] The inner hole of the sleeve 13c is composed of a first hole and a second hole. The inner diameter of the first hole is larger than the inner diameter of the second hole. The first hole is a polygonal hole. After the first hole cooperates with the second combining portion 13b, the sleeve 13c and the second combining portion 13b are circumferentially fixed. When the sleeve 13c and the second combining portion 13b need to be separated, the sleeve 13c can be pulled out from the second combining portion 13b. Therefore, the sleeve 13c and the second combining portion 13b can be quickly combined or separated.

[0044] The second hole is a polygonal hole, and the end of the turbine 4 is polygonal. Therefore, after the end of the turbine 4 is inserted into the second hole and matched with the second hole, the end of the turbine 4 can be prevented from rotating. For the ends of the turbine 4 of different sizes, the matching sleeve 13c can be replaced. As can be seen from the above, the sleeve 13c can be quickly replaced.

Claims

1. A turbocharger compression nut assembly tool, comprising a workbench (11), characterized in that: It also includes a support seat (12) and a positioning component (13) used to be combined with the end of the turbine (4) to limit the rotation of the turbine (4); the support seat (12) is fixed on the workbench (11); one end of the support seat (12) is provided with an assembly hole (14); after the positioning component (13) is matched with the assembly hole (14), the positioning component (13) and the support seat (12) are fixed.

2. The turbocharger compression nut assembly tool according to claim 1, characterized in that: The positioning component (13) comprises a first coupling portion (13a) and a second coupling portion (13b) coupled to the end of the turbine (4); the outer diameter of the second coupling portion (13b) is smaller than the outer diameter of the first coupling portion (13a); the second coupling portion (13b) is polygonal or is provided with a groove for plugging and matching with the end of the turbine (4).

3. The turbocharger compression nut assembly tool according to claim 2, characterized in that: The assembly hole (14) comprises a first hole (14a) matched with an intermediate body (1) in a turbocharger and a second hole (14b) matched with an end of a turbine (4); the inner diameter of the first hole (14a) is greater than the inner diameter of the second hole (14b).

4. The turbocharger compression nut assembly tool according to claim 3, characterized in that: The second hole (14b) is a polygonal hole, the contour of the first coupling portion (13a) is a polygon, and after the first coupling portion (13a) is inserted into the polygonal portion of the assembly hole (14), the positioning component (13) and the support seat (12) are circumferentially fixed.

5. The turbocharger compression nut assembly tool according to claim 2, characterized in that: A clearance hole (12a) is provided on the peripheral surface of the support seat (12).

6. The turbocharger compression nut assembly tool according to any one of claims 1 to 5, characterized in that: The workbench (11) is provided with a first matching hole (11a), and the other end of the support seat (12) is provided with a second matching hole (12b) corresponding to the first matching hole (11a); It also includes a driving component (15) that drives the positioning component (13) to move after passing through the second matching hole (12b) and the first matching hole (11a).

7. The turbocharger compression nut assembly tool according to claim 6, characterized in that: The driving component (15) is threadedly connected to the first matching hole (11a) and / or the second matching hole (12b).

8. The turbocharger compression nut assembly tool according to claim 6, characterized in that: The driving component (15) comprises a push rod (15a) and a handle (15b). The push rod (15a) is provided with a thread, and the push rod (15a) is fixed to the handle (15b).

9. The turbocharger compression nut assembly tool according to any one of claims 1 to 5, characterized in that: It also comprises a storage rack (16), on which a plurality of storage boxes (17) for accommodating positioning components (13) of different models are arranged.

10. The turbocharger compression nut assembly tool according to claim 1, characterized in that: The positioning component (13) comprises a first coupling portion (13a), a second coupling portion (13b), and a sleeve (13c); the outer diameter of the second coupling portion (13b) is smaller than the outer diameter of the first coupling portion (13a); the second coupling portion (13b) is polygonal and is fixed to the first coupling portion (13a); one end of the sleeve (13c) is sleeved on the second coupling portion (13b) to form a circumferential fixation; the other end of the sleeve (13c) is used to couple with the end of the turbine (4).

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