Coupler aligning and centering device for linear electric cylinder driving system

Abstract

The utility model relates to the technical field of mechanical assembly, in particular to a coupler aligning and centering device for a linear electric cylinder driving system. Comprising a shafting supporting assembly, a linear electric cylinder shell and a tool, the shafting supporting assembly is coaxially and fixedly installed in the linear electric cylinder shell, the shafting supporting assembly is positioned through a shaft shoulder of the linear electric cylinder shell, and a pin shaft of the tool is inserted into a hole of a coupler of the shafting supporting assembly. The fastening bolt is locked from the kidney-shaped hole in the side edge of the linear electric cylinder shell, and then the coupler is locked to the tool pin shaft. The shafting supporting assembly comprises a coupler, a connecting bolt, a shaft sleeve, a rolling bearing and a locking nut, the shaft sleeve is fixedly installed outside the coupler through the connecting bolt, one end of the shaft sleeve is sleeved with the rolling bearing, and the other end of the shaft sleeve is fixedly provided with the locking nut. The coaxiality of the rotating centers of the motor shaft, the coupler and the linear electric cylinder shell can be effectively guaranteed, and the assembly precision is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical assembly technology, and in particular to a coupling alignment and centering device for a linear electric cylinder drive system. Background Technology

[0002] During the assembly of a linear electric cylinder drive system, proper alignment of the coupling is crucial. The rotation centers of the motor shaft, coupling, and linear electric cylinder housing must be on the same axis to ensure transmission accuracy and efficiency, and effectively eliminate potential vibrations and noise.

[0003] However, in practical use, the coupling is connected to the tapered sleeve by bolts, and there is a gap between the bolts and the through holes, making proper alignment difficult to achieve. The previously used manual installation method involved first tightening the coupling and tapered sleeve, and then installing the motor shaft, which made it impossible to adjust and compensate for the coupling's axis. This makes it difficult for the rotation centers of the motor shaft, coupling, and linear cylinder housing to be perfectly concentric, resulting in significant stress on the coupling. This affects the normal operation of the shaft, bearings, and other parts on the shaft, and can even cause severe vibration and noise in the entire system, shortening the equipment's lifespan.

[0004] Therefore, there is an urgent need for an effective coupling alignment device to solve these problems. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a coupling alignment and centering device for a linear electric cylinder drive system, which can efficiently and accurately complete the assembly work of the linear electric cylinder drive system and effectively solve the problem of difficult coupling alignment and centering in the prior art.

[0006] The technical problem solved by this utility model is achieved through the following technical solution:

[0007] A coupling alignment and centering device for a linear electric cylinder drive system includes a shaft support assembly, a linear electric cylinder housing, and a tooling. The shaft support assembly is coaxially fixed inside the linear electric cylinder housing and is positioned by the shaft shoulder of the linear electric cylinder housing. The pin of the tooling is inserted into the hole of the coupling of the shaft support assembly. The coupling is locked to the tooling pin by tightening the fastening bolt from the side slot of the linear electric cylinder housing.

[0008] The shaft support assembly includes a coupling, connecting bolts, a bushing, a rolling bearing, and a lock nut. The bushing is fixed to the outside of the coupling by the connecting bolts. A rolling bearing is fitted at one end of the bushing, and a lock nut is fixed at the other end of the bushing.

[0009] Furthermore, it also includes a bearing end cap, which is fixedly mounted on the linear cylinder housing and is used to provide axial fastening for the rolling bearing installed inside the linear cylinder housing.

[0010] Furthermore, the connecting bolts and fastening bolts are detachable.

[0011] The advantages and positive effects of this utility model are:

[0012] 1. This utility model inserts the tooling pin into the coupling hole and uses the waist-shaped hole on the side of the linear cylinder housing to lock the fastening bolt, so that the coupling is precisely locked to the tooling pin. This can effectively ensure the coaxiality of the rotation centers of the motor shaft, coupling, and linear cylinder housing, greatly improve the assembly accuracy, avoid stress concentration caused by misalignment, reduce the wear of shafts, bearings and other parts, and extend the service life of the equipment.

[0013] 2. The connecting bolts of this utility model adopt a detachable connection, which allows for flexible adjustment of the coupling position during the initial assembly stage. After precise alignment is achieved through tooling, the bolts are tightened. Compared with the traditional manual installation method of tightening the coupling and tapered sleeve first and then being unable to adjust the axis, this device provides greater flexibility and operability for the assembly process, effectively solving the problem of difficulty in aligning the coupling in the prior art.

[0014] 3. The bearing end cap of this utility model is fixed on the housing of the linear electric cylinder, providing axial fastening for the installed rolling bearing, further enhancing the stability of the shaft support assembly in the housing of the linear electric cylinder, ensuring the accuracy of the position of each component in the entire drive system during operation, and reducing the generation of vibration and noise. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a cross-sectional view of the present invention.

[0017] Figure 3 This is a schematic diagram of the tooling of this utility model.

[0018] Figure Labels

[0019] 1-Tooling, 2-Linear electric cylinder housing, 3-Coupling, 4-Connecting bolt, 5-Bearing end cover, 6-Rolling bearing, 7-Shaft sleeve, 8-Locking nut, 9-Fasting bolt, 10-Shaft support assembly. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments are merely descriptive and not limiting, and should not be used to limit the scope of protection of the present invention.

[0021] A coupling alignment and centering device for a linear electric cylinder drive system includes a shaft support assembly 10, a linear electric cylinder housing 2, and a tooling 1. The shaft support assembly 10 is coaxially fixed inside the linear electric cylinder housing 2. The shaft support assembly 10 is positioned by the shoulder of the linear electric cylinder housing 2. In this way, a stable installation connection is established between the linear electric cylinder housing 2 and the shaft support assembly 10, ensuring the relative accuracy of their spatial positions.

[0022] The pin of the tooling 1 is inserted into the hole of the coupling 3 of the shaft support assembly 10. The coupling 3 is locked to the pin of the tooling 1 by tightening the fastening bolt 9 from the side waist-shaped hole of the linear cylinder housing 2. The outer circumferential surface of the tooling 1 and the inner circumferential surface of the linear cylinder housing 2 adopt a clearance fit based on the hole system. During the assembly process, through this fit relationship, the axis of the linear cylinder housing 2 and the tooling 1 are made to coincide with each other by means of the tooling 1, thereby realizing the coaxial relationship with other components.

[0023] The shaft support assembly 10 includes a coupling 3, connecting bolts 4, a bushing 7, a rolling bearing 6, and a lock nut 8. The bushing 7 is fixed to the outside of the coupling 3 by the connecting bolts 4. One end of the bushing 7 is fitted with the rolling bearing 6, and the other end is fixed with the lock nut 8. The coupling 3 and the bushing 7 are connected using the connecting bolts 4. Initially, the connecting bolts 4 are not fully tightened; only half-tightening is required to facilitate subsequent adjustment of the coupling 3's axial position. After alignment, the connecting bolts 4 are tightened to securely connect the coupling 3 and the bushing 7, ensuring stable power transmission from the bushing 7 to the coupling 3.

[0024] It also includes a bearing end cover 5, which is fixedly mounted on the linear cylinder housing 2 and is used to provide axial fastening for the rolling bearing 6 installed in the linear cylinder housing 2, to prevent the rolling bearing 6 from moving axially and to ensure the stability of the entire transmission system.

[0025] The connecting bolt 4 and fastening bolt 9 are detachable.

[0026] Working principle:

[0027] During assembly, the rolling bearing, bushing, and lock nut are first assembled together and installed into the linear cylinder housing, with axial fastening provided by the bearing end cap. The coaxiality of the linear cylinder housing and bushing is ensured through the mating relationship between the rolling bearing and the linear cylinder housing and bushing, respectively.

[0028] Next, connect the coupling to the bushing using connecting bolts. Do not fully tighten the bolts; leave the threads half-tight to facilitate subsequent adjustment of the coupling's axis position. Insert the tooling pin into the coupling's hole, using a clearance fit with a hole-based system. Insert a wrench through the oblong hole on the side of the linear cylinder housing to tighten the fastening bolts. At this point, the coupling firmly holds the tooling pin, ensuring that the coupling and tooling axes coincide, thus achieving alignment. Simultaneously, the outer circumferential surface of the tooling and the inner circumferential surface of the linear cylinder housing also use a clearance fit with a hole-based system, ensuring that the axes of the tooling and the linear cylinder housing coincide.

[0029] Rotate the fixture to align the through hole on the fixture with the threaded hole on the bushing, and tighten the connecting bolts. At this point, the rotation centers of the linear cylinder housing, coupling, and bushing are aligned. Then, insert a wrench through the oblong hole on the side of the linear cylinder housing to loosen the fastening bolts, and use a pin puller to remove the fixture. Finally, install the tapered sleeve and motor to ensure that the rotation centers of the motor shaft, coupling, and linear cylinder housing are on a straight line, achieving coupling alignment.

[0030] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A coupling alignment and centering device for a linear electric cylinder drive system, characterized in that: The device includes a shaft support assembly, a linear cylinder housing, and a tooling. The shaft support assembly is coaxially fixed inside the linear cylinder housing and is positioned by the shaft shoulder of the linear cylinder housing. The pin of the tooling is inserted into the hole of the coupling of the shaft support assembly. The coupling is locked to the pin of the tooling by tightening the fastening bolt from the side slot of the linear cylinder housing. The shaft support assembly includes a coupling, connecting bolts, a bushing, a rolling bearing, and a lock nut. The bushing is fixed to the outside of the coupling by the connecting bolts. A rolling bearing is fitted at one end of the bushing, and a lock nut is fixed at the other end of the bushing.

2. The coupling alignment and centering device for a linear electric cylinder drive system according to claim 1, characterized in that: It also includes a bearing end cap, which is fixed to the housing of the linear electric cylinder and is used to provide axial fastening for the rolling bearing installed in the housing of the linear electric cylinder.

3. The coupling alignment and centering device for a linear electric cylinder drive system according to claim 1, characterized in that: The connecting bolts and fastening bolts are detachable.

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