Test bed for detecting synchronous reliability of multiple groups of belt pulleys

Abstract

The utility model provides a multi-group belt pulley synchronization reliability detection test bench, which comprises a base station, a stop device and a clamping device, and is characterized in that the clamping device comprises a left bracket, a right bracket and a driving seat on the brackets; a test shaft is arranged between the two driving seats; the left bracket is driven by a linear driving mechanism; the driving seat of the right bracket is driven by a rotary driving mechanism; the test shaft comprises a plurality of split bodies, and each split body comprises a workpiece mounting section and a workpiece locking section; a matching head with an outer hexagonal structure is arranged on one side, different from the workpiece mounting section, of the workpiece locking section; the side, different from the workpiece locking section, of the workpiece mounting section is provided with an inner hexagonal groove matched with the matching head, and the matching head of each split body is matched with the groove of the other split body adjacent to the split body. The belt pulley detection device is reasonable in structural design, a plurality of split bodies are combined to form the test shaft, and a belt pulley to be detected can be mounted on each split body, so that a plurality of belt pulleys can be mounted and clamped on the test shaft at one time for detection, the mounting and dismounting operations are convenient and labor-saving, and the detection efficiency is high.

Description

Technical Field

[0001] The invention belongs to the technical field of pulley production and testing equipment, and in particular relates to a synchronous reliability testing bench for multiple pulley groups. Background Art

[0002] The automobile generator is one of the core power sources of the automobile. Its function is to continuously supply power to the required electrical equipment and charge the battery during the normal operation of the automobile engine. The traditional generator pulley is a rigid pulley. When the engine stops or the transmission shifts gears, the linear speed of the pulley will change. The generator rotor runs faster under the strong rotational inertia, which is easy to wear and has a reduced life. At the same time, due to the inherent irregular vibration of the engine, the pulley runs irregularly in an instant, causing energy loss. In order to improve the above defects, a one-way coupled pulley for the generator was developed. It mainly consists of an outer ring that matches the cross-sectional shape of the multi-V belt, a clutch unit consisting of a stamped inner ring, an outer ring and a double needle bearing, a shaft sleeve and two sealing rings. When the engine speed is low, if the speed of the inner ring, i.e. the guide cylinder, is higher than the speed of the pulley housing, the pulley housing will slip, and the one-way coupling structure will decouple the pulley housing from the guide cylinder. Such products need to undergo reliability testing before leaving the factory. In the prior art, most testing equipment can only test one product at a time, and the installation, fixation and disassembly of the product to be tested are relatively cumbersome, resulting in low work efficiency. Therefore, it is necessary to improve the existing testing equipment. Summary of the invention

[0003] In view of this, the invention aims to overcome the defects in the prior art and proposes a multi-group pulley synchronization reliability detection test bench.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] A multi-group pulley synchronization reliability test bench comprises a base, a stopper and a clamping device are arranged on the base, the clamping device comprises a left bracket and a right bracket, a driving seat is arranged on the two brackets respectively, and the driving seat comprises a shaft portion and a fixing portion; each driving seat is rotationally matched with the corresponding bracket, and a test shaft is detachably installed between the two driving seats; the left bracket is driven by a linear driving mechanism to adjust its distance relative to the right bracket, and the driving seat of the right bracket is driven by a rotating driving mechanism to realize the rotation control of the test shaft; the test shaft comprises a plurality of split bodies, each of which is Each split body includes a workpiece mounting section and a workpiece locking section, and the workpiece mounting section is provided with matching teeth; the workpiece locking section is provided with an external thread, and a locking nut is screwed on the external thread; the workpiece locking section is different from the workpiece mounting section on one side, and is provided with a matching head with an external hexagonal structure; the workpiece mounting section is different from the workpiece locking section on one side, and is provided with an internal hexagonal groove matching with the matching head, and the matching head of each split body matches with the groove of another adjacent split body; the stopping device includes a support, and a stopping mechanism is provided on the support, the protruding rod end of the stopping mechanism faces the test axis, and a stopping seat is provided at the end of the protruding rod.

[0006] Furthermore, bearing seats are provided on both the left and right frames, the shaft of the drive seat is rotatably mounted on the corresponding bearing seat, and a clamping head that cooperates with the hexagonal groove is provided on the end surface of the fixed portion of the right bracket drive seat.

[0007] Furthermore, the clamping head and the mating head have the same shape.

[0008] Furthermore, the linear drive mechanism includes a drive cylinder, one end of the extension rod of the drive cylinder is against the left bracket, a slide rail is provided on the base, and the left bracket is slidably mounted on the slide rail.

[0009] Furthermore, the rotation drive mechanism includes a motor, which is mounted on the base frame, and a drive shaft of the motor is connected to the shaft of the drive seat through a coupling.

[0010] Furthermore, the stopping mechanism comprises a stopping cylinder, and a protruding rod of the stopping cylinder is perpendicular to the test axis.

[0011] Furthermore, the stop cylinder is an electric cylinder, a pneumatic cylinder or a hydraulic cylinder.

[0012] Furthermore, an arc groove is provided on one side of the stop seat corresponding to the test axis.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] The invention has a reasonable structural design. The test shaft is composed of multiple parts, and the pulley to be tested can be installed on each part. The test shaft is driven to rotate by the rotating driving mechanism, and the stop mechanism is used to keep the pulley housing stationary, so that the inner cylinder rotates relative to the housing, thereby simulating the working condition of the pulley to achieve the purpose of testing its reliability. The test shaft of the test bench can be clamped with multiple pulleys for testing at one time, and the installation and disassembly operations are convenient, labor-saving, and the detection efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 A schematic diagram of the structure created by the present invention;

[0017] Figure 2 for Figure 1 Right view of;

[0018] Figure 3 for Figure 2 Schematic diagram without the rotation drive mechanism;

[0019] Figure 4 for Figure 1 Schematic diagram after removing the test axis;

[0020] Figure 5 A schematic diagram of the test shaft in the invention;

[0021] Figure 6 It is a schematic diagram of the split body in the invention;

[0022] Figure 7 A schematic diagram of the left driving seat in the invention;

[0023] Figure 8 A schematic diagram of the right driving seat in the invention;

[0024] Fig. 9 The present invention is a schematic diagram of a test shaft having a pulley to be tested installed thereon. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions 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. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0029] A test bench for detecting the synchronization reliability of multiple pulleys, such as Figures 1 to 9 As shown, it includes a base 1, on which a stop device and a clamping device are provided, the clamping device includes a left bracket 2 and a right bracket 3, and drive seats are provided on the two brackets respectively, the left drive seat 4 includes a left shaft portion 5 and a left fixing portion 6, and the right drive seat 7 includes a right shaft portion 8 and a right fixing portion 9; each drive seat is rotatably matched with the corresponding bracket, and a test shaft 10 is detachably installed between the two drive seats; the left bracket is driven by a linear drive mechanism 11 to adjust its distance relative to the right bracket, and the drive seat of the right bracket is driven by a rotation drive mechanism 12 to realize the rotation control of the test shaft. As an example, the rotation drive mechanism includes a motor, which is installed on the base frame, and the drive shaft of the motor is connected to the shaft of the drive seat through a coupling.

[0030] The test shaft includes a plurality of parts 13, each of which includes a workpiece mounting section 14 and a workpiece locking section 15, and the workpiece mounting section is provided with a matching tooth 16; the workpiece locking section is provided with an external thread 17, and a locking nut 18 is screwed on the external thread; the workpiece locking section is different from the workpiece mounting section on one side, and is provided with a matching head 19 of an external hexagonal structure; the workpiece mounting section is different from the workpiece locking section on one side, and is provided with an internal hexagonal groove matching the matching head; the stop device includes a support 21, and a stop mechanism 22 is provided on the support, the extension rod end of the stop mechanism faces the test shaft, and a stop seat 23 is provided at the end of the extension rod. As an example, the stop seat is provided with an arc groove on one side corresponding to the test shaft. The stop mechanism includes a stop cylinder, and the extension rod of the stop cylinder is perpendicular to the test shaft. The stop cylinder adopts an electric cylinder, a pneumatic cylinder or a hydraulic cylinder.

[0031] Before the test, first install and fix the pulley 24 to be tested on the test shaft. Specifically, the pulleys can be installed on each split body respectively, and then the split bodies are assembled together, and then the assembled test shaft is fixed on the drive seat of the two brackets. The operation of fixing the pulley on the split body is as follows: first, the pulley to be tested is mounted on the split body, and the inner tooth part of the inner cylinder of the pulley is matched with the matching teeth of the workpiece installation section, and then the locking nut is mounted on the split body and screwed on the external thread structure of the workpiece locking section. After the locking nut is against the end face of the pulley, continue to screw the locking nut until the pulley is locked.

[0032] After the test shaft of the pulley to be tested is fixed and clamped between the two brackets, the stop mechanism is controlled to extend the rod so that the stop seat contacts and fits tightly with the surface of the pulley shell. When the test shaft rotates, the inner cylinder of the pulley (also called the gear shaft) rotates synchronously with the test shaft, and the friction between the pulley shell and the stop seat ensures that the pulley shell is stationary. To put it another way, even if the pulley shell rotates a small amount, it will not affect the actual detection effect. This test bench can simulate the working state of the pulley, and through the test of a predetermined time, it can effectively detect the reliability of the pulley's operation, that is, the pulley is not damaged within the specified time (life).

[0033] The left and right frames are provided with bearing seats. The left drive seat is installed on the bearing seat of the left frame, and the right drive seat is installed on the bearing seat of the right frame. The shaft of each drive seat is rotatably installed on the corresponding bearing seat, and the fixed part of each drive seat extends to the inner side of the frame. A clamping head 20 that matches with the inner hexagonal groove is provided on the end face of the fixed part of the right drive seat. The clamping head has the same shape and size as the matching head. A fixing groove that matches with the matching head is provided on the end face of the fixed part of the left drive seat. The fixing groove has the same shape and size as the inner hexagonal groove of the outer end face of the workpiece installation section. The matching head of each split body matches with the groove of another adjacent split body. The matching head of the split body close to the left bracket matches with the fixed groove of the left drive seat; the inner hexagonal groove of the split body close to the right bracket matches with the clamping head of the right drive seat. When the rotation drive mechanism is started, the test shaft is driven to rotate through the driving shaft of the rotation drive mechanism.

[0034] In an optional embodiment, the linear drive mechanism includes a drive cylinder, one end of the extended rod of the drive cylinder is against the left bracket, a slide rail is provided on the base, and the left bracket is slidably mounted on the slide rail. When the cylinder rod of the drive cylinder is retracted and telescopic, the distance between the left bracket and the right bracket can be adjusted. As an example, when the test shaft needs to be disassembled, the cylinder rod of the drive cylinder can be controlled to retract so that the fixed groove is separated from the mating head of the leftmost split body, and the test shaft can be taken out from between the two brackets. After the pulley to be tested has been fixed on the test shaft, when the test shaft needs to be clamped, it is only necessary to first align the hexagonal groove on the rightmost split of the test shaft with the chuck, and insert the chuck into the hexagonal groove, and then extend the cylinder rod of the drive cylinder to push the left bracket to the side of the right bracket, and the mating head of the leftmost split body is inserted into the fixed groove of the left drive seat, and as the distance between the left and right brackets decreases, the test shaft is clamped between the left and right drive seats.

[0035] The invention has a reasonable structural design. The test shaft is composed of multiple parts, and the pulley to be tested can be installed on each part. The test shaft is driven to rotate by the rotating driving mechanism, and the stop mechanism is used to keep the pulley housing stationary, so that the inner cylinder rotates relative to the housing, thereby simulating the working condition of the pulley to achieve the purpose of testing its reliability. The test shaft of the test bench can be clamped with multiple pulleys for testing at one time, and the installation and disassembly operations are convenient, labor-saving, and the detection efficiency is high.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-group pulley synchronization reliability test bench, characterized in that: It includes a base, a stopper and a clamping device are arranged on the base, the clamping device includes a left bracket and a right bracket, a driving seat is arranged on the two brackets respectively, and the driving seat includes a shaft portion and a fixing portion; each driving seat is rotatably matched with the corresponding bracket, and a test shaft is detachably installed between the two driving seats; the left bracket is driven by a linear driving mechanism to adjust its distance relative to the right bracket, and the driving seat of the right bracket is driven by a rotating driving mechanism to realize the rotation control of the test shaft; the test shaft includes a plurality of split bodies, each of which includes a workpiece mounting The workpiece mounting section and the workpiece locking section, the workpiece mounting section is provided with matching teeth; the workpiece locking section is provided with an external thread, and a locking nut is screwed on the external thread; the workpiece locking section is different from the workpiece mounting section on one side, and is provided with a matching head with an external hexagonal structure; the workpiece mounting section is different from the workpiece locking section on one side, and is provided with an internal hexagonal groove matching with the matching head, and the matching head of each split is matched with the groove of another adjacent split; the stopping device includes a support, a stopping mechanism is provided on the support, the protruding rod end of the stopping mechanism faces the test axis, and a stopping seat is provided at the end of the protruding rod.

2. A multi-pulley synchronization reliability test bench according to claim 1, characterized in that: The left and right frames are both provided with bearing seats, the shaft of the driving seat is rotatably installed on the corresponding bearing seat, and the end surface of the fixed part of the right bracket driving seat is provided with a chuck that matches the hexagonal groove.

3. A multi-pulley synchronization reliability test bench according to claim 2, characterized in that: The clamping head and the matching head have the same shape.

4. A multi-pulley synchronization reliability test bench according to claim 1, characterized in that: The linear drive mechanism comprises a drive cylinder, one end of the extension rod of the drive cylinder abuts against the left bracket, a slide rail is arranged on the base, and the left bracket is slidably mounted on the slide rail.

5. The multiple pulley synchronization reliability test bench according to claim 1 is characterized in that: The rotation driving mechanism comprises a motor which is mounted on a base frame, and a driving shaft of the motor is connected to a shaft portion of a driving seat through a coupling.

6. A multi-pulley synchronization reliability test bench according to claim 1, characterized in that: The stopping mechanism comprises a stopping cylinder, a protruding rod of which is perpendicular to the test axis.

7. A multi-pulley synchronization reliability test bench according to claim 6, characterized in that: The stop cylinder is an electric cylinder, a pneumatic cylinder or a hydraulic cylinder.

8. A multi-pulley synchronization reliability test bench according to claim 1 or 6, characterized in that: An arc groove is arranged on one side of the stop seat corresponding to the test axis.

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