Tooth piece service life testing tool

Abstract

The utility model relates to a tooth piece service life test tool, which comprises a bottom plate, a driving mechanism, a transmission mechanism and a plunger, and is characterized in that the driving mechanism is arranged on the bottom plate; the transmission mechanism is in transmission connection with the driving mechanism, the plunger is located on one side of the tooth piece to be detected in the circumferential direction and comprises a ball head piece and an elastic piece, the ball head piece is connected to one side, facing the tooth piece to be detected, of the elastic piece, and the ball head piece is connected to the other side, facing the tooth piece to be detected, of the elastic piece. When rotating, a tooth piece to be measured can be engaged with the ball head piece and enables the ball head piece to reciprocate in the radial direction of the tooth piece to be measured. Therefore, the working state of the to-be-tested tooth sheet during vehicle gear shifting can be simulated to test the wear resistance and the service life of the to-be-tested tooth sheet, so that the test efficiency and accuracy are improved, and the problem that the service life of the to-be-tested tooth sheet fails to meet the requirement and the cost is wasted when the to-be-tested tooth sheet is assembled in a gearbox to be subjected to service life test can be prevented. In addition, testing can be carried out before the tooth piece to be tested is assembled, so that early prevention is carried out.

Description

Technical Field

[0001] The present application relates to the technical field of gear life testing, and in particular to a gear life testing tool. Background Art

[0002] During the driving process of the car, the outer contour of the crown gear piece will cooperate with the plunger and produce relative movement to shift gears. In order to prevent gear shift failure caused by wear, the crown gear piece needs to be tested for life first.

[0003] In the prior art, life tests are generally performed using a gearbox, and the entire gearbox needs to be tested together. Once the test result is abnormal, it is impossible to accurately determine whether the fault source comes from the crown gear or other parts in the gearbox. This testing method results in low testing efficiency. Utility Model Content

[0004] The present application provides a gear life test tool to solve the technical problem of low testing efficiency of crown-shaped gears.

[0005] The gear life test tool provided in the embodiment of the present application includes a base plate, a driving mechanism, a transmission mechanism, and a plunger, wherein the driving mechanism is arranged on the base plate; the transmission mechanism is transmission-connected to the driving mechanism, and the driving mechanism can drive the gear to be tested to rotate through the transmission mechanism; the plunger is located on one side of the circumferential direction of the gear to be tested, and the plunger includes a ball head part and an elastic part, and the ball head part is connected to the side of the elastic part facing the gear to be tested, and when the gear to be tested rotates, it can mesh with the ball head part and make the ball head part reciprocate in the radial direction of the gear to be tested.

[0006] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0007] The gear life test fixture provided in the embodiment of the present application can simulate the working state of the gear to be tested in the vehicle gear shifting through the gear life test fixture to test the wear resistance and service life of the gear to be tested, and the gear to be tested does not need to be placed in the gearbox together with other components for testing, so as to improve the efficiency and accuracy of the test, and prevent the gear to be tested from failing to meet the requirements during the gearbox life test, resulting in cost waste. In addition, the gear to be tested can be tested through the gear life test fixture before assembling it for early prevention.

[0008] In some embodiments, it also includes: a first fixed seat, the first fixed seat is arranged on the base plate, the plunger is located on one side of the first fixed seat, the transmission mechanism is located on the other side of the first fixed seat, the first fixed seat has a mounting hole, the shaft of the gear piece to be tested is passed through the mounting hole and is connected to the transmission mechanism.

[0009] In some embodiments, the driving mechanism includes a cylinder having a push rod; the transmission mechanism includes: a connecting head, one end of which is connected to the push rod; a connecting rod, one end of which is hingedly connected to the other end of the connecting head, and the other end of the connecting rod is connected to the shaft of the tooth piece to be tested to drive the tooth piece to be tested to rotate.

[0010] In some embodiments, it also includes: a limit member, which is arranged on the side of the other end of the connecting rod away from the first fixing seat, and the limit member is used to limit the movement of the other end of the connecting rod along the axial direction of the shaft of the gear to be tested.

[0011] In some embodiments, the limiting member is a threaded member, the shaft of the gear piece to be tested has a threaded hole, and the threaded member is threadedly matched with the threaded hole.

[0012] In some embodiments, the outer peripheral surface of the limit member has an annular protrusion, one end of the shaft body of the gear piece to be tested in the axial direction has a stop surface, and the other end of the connecting rod is clamped between the annular protrusion and the stop surface along the axial direction of the shaft body of the gear piece to be tested.

[0013] In some embodiments, it also includes: a mounting bracket, the mounting bracket is arranged on the base plate; a mounting seat, the mounting seat is hinged to the mounting bracket, and the end of the cylinder away from the connecting head is mounted on the mounting seat.

[0014] In some embodiments, it further includes: a control member, which is disposed on the driving mechanism and can control the movement stroke of the output end of the driving mechanism.

[0015] In some embodiments, it further includes: a second fixing seat, the second fixing seat is arranged on the bottom plate, the plunger is arranged on the fixing seat and is located below the tooth piece to be tested.

[0016] In some embodiments, a mounting groove is provided in the second fixing seat, the plunger is installed in the mounting groove and at least a portion of the ball head extends out of the mounting groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0020] Figure 1 A side view of a gear life test tool provided in an embodiment of the present application;

[0021] Figure 2 A cross-sectional view of a gear life test tool provided in an embodiment of the present application;

[0022] Figure 3 A three-dimensional diagram of a gear life test tool and a gear to be tested at one angle provided in an embodiment of the present application;

[0023] Figure 4 A stereoscopic view from another angle of a gear life test tool and a gear to be tested provided in an embodiment of the present application.

[0024] Description of reference numerals:

[0025] 1. Gear life test tool; 10. Bottom plate; 20. Cylinder; 21. Push rod; 30. Connector; 40. Connecting rod; 50. First fixing seat; 51. Mounting hole; 60. Stopper; 61. Annular protrusion; 70. Mounting bracket; 80. Mounting seat; 90. Hinge pin; 100. Travel switch; 110. Second fixing seat; 1101. Mounting groove; 120. Elastic member; 130. Ball head member; 140. Gasket;

[0026] 2. The gear to be tested; 2A. The shaft; 2B. The first gear portion; 2C. The second gear portion; 2D. The first limit position; 2E. The second limit position. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0028] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "center", "axial", "circumferential", "radial", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside". Such spatial relative terms are intended to include different orientations of the device in use or operation other than the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a change in posture or a change in motion state, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0029] In the description of the present application, “plurality” means two or more.

[0030] In order to solve the technical problem of low testing efficiency of crown-shaped gears in the prior art, the present application provides a gear life test tool 1, including a base plate 10, a driving mechanism, a transmission mechanism and a plunger. The gear life test tool 1 is used to perform life test on a gear 2 to be tested.

[0031] Specifically, if Figure 1-Figure 4 As shown, the driving mechanism is arranged on the bottom plate 10, the transmission mechanism is connected to the driving mechanism, the driving mechanism can drive the gear piece 2 to be tested to rotate through the transmission mechanism, the plunger is located on one side of the circumferential direction of the gear piece 2 to be tested, the plunger includes a ball head 130 and an elastic member 120, the ball head 130 is connected to the side of the elastic member 120 facing the gear piece 2 to be tested, and the gear piece 2 to be tested can be meshed with the ball head 130 when rotating and make the ball head 130 reciprocate in the radial direction of the gear piece 2 to be tested. It can be understood that the rotation of the gear piece 2 to be tested can be an arc motion, and the rotation method can be a back-and-forth rotation method of rotating clockwise by a preset angle and then rotating counterclockwise by a preset angle, which can be specifically set according to actual conditions.

[0032] For example, Figure 4As shown, the gear piece 2 to be tested includes a shaft body 2A located in the center, a first gear piece portion 2B and a second gear piece portion 2C spaced apart along the circumferential direction of the shaft body 2A, and the contour line of the outer peripheral surface of the first gear piece portion 2B is wavy so that the contour line of the outer peripheral surface of the first gear piece portion 2B has multiple mating surfaces with different heights. When the car switches different gears while driving, different mating surfaces can be mated with the plunger. In the embodiment of the present application, the gear piece 2 to be tested can be a crown-shaped gear piece. Figure 4 As shown, the first tooth plate portion 2B of the tooth plate 2 to be tested may have a first extreme position 2D and a second extreme position 2E, and reciprocate between the first extreme position 2D and the second extreme position 2E. When the tooth plate 2 to be tested rotates, the position to be tested of the first tooth plate portion 2B of the tooth plate 2 to be tested (that is, a plurality of mating surfaces with different heights between the first extreme position 2D and the second extreme position 2E) may mesh with the ball head 130, so that the elastic member 120 is compressed to different degrees, and the ball head 130 is reciprocated in the radial direction of the tooth plate 2 to be tested under the action of the tooth plate 2 to be tested, so as to simulate the working state of the tooth plate 2 to be tested. The test is terminated when the set number of times is reached, and the wear or damage of the position to be tested of the tooth plate 2 to be tested is verified.

[0033] Thus, the gear life test fixture 1 can be used to simulate the working state of the gear 2 to be tested during vehicle gear shifting to test the wear resistance and service life of the gear 2 to be tested, and the gear 2 to be tested does not need to be placed in the gearbox together with other components for testing, so as to improve the efficiency and accuracy of the test, and prevent the gear 2 to be tested from failing to meet the requirements during the gearbox life test, thereby causing cost waste. In addition, the gear life test fixture 1 can be used to test the gear 2 to be tested before assembling it, so as to take preventive measures in advance.

[0034] In one embodiment, if Figure 1-Figure 4 As shown, the gear life test tool 1 includes a first fixed seat 50, which is arranged on the bottom plate 10, the plunger is located on one side of the first fixed seat 50, and the transmission mechanism is located on the other side of the first fixed seat 50. The first fixed seat 50 has a mounting hole 51, and the shaft body 2A of the gear piece 2 to be tested is passed through the mounting hole 51 and is connected to the transmission mechanism. The driving mechanism drives the shaft body 2A of the gear piece 2 to be tested to rotate through the transmission mechanism so that the gear piece 2 to be tested rotates relative to the ball head 130, and the position to be tested of the gear piece 2 to be tested generates friction with the ball head 130 to perform a surface wear resistance life test of the gear piece 2 to be tested. Therefore, the first fixed seat 50 can play the role of installing the gear piece 2 to be tested, and can reasonably use the space.

[0035] In one embodiment, if Figure 1As shown, the driving mechanism includes a cylinder 20, and the cylinder 20 has a push rod 21; the transmission mechanism includes a connector 30 and a connecting rod 40, one end of the connector 30 is connected to the push rod 21; one end of the connecting rod 40 is hingedly connected to the other end of the connector 30, and the other end of the connecting rod 40 is connected to the shaft 2A of the gear piece 2 to be tested to drive the gear piece 2 to be tested to rotate. The push rod 21 of the cylinder 20 can be used as a power source to perform linear reciprocating motion, and drive one end of the connector 30 to perform linear motion, and then converted into rotational motion through the connecting rod 40 and drive the gear piece 2 to be tested to rotate, so as to simulate the state of the gear piece 2 to be tested when it is working.

[0036] In an embodiment, the gear life test tool 1 may further include a stopper 60, which is disposed on the side of the other end of the connecting rod 40 away from the first fixing seat 50, and is used to limit the movement of the other end of the connecting rod 40 along the axial direction of the shaft 2A of the gear 2 to be tested. By providing the stopper 60, the stability and reliability of the force transmission of the connecting rod 40 can be ensured to improve the test accuracy, and the movement between the other end of the connecting rod 40 and the gear 2 to be tested can be prevented to improve the service life of both.

[0037] In one embodiment, the limiting member 60 is a threaded member, and the shaft 2A of the gear piece 2 to be tested has a threaded hole. The threaded member and the threaded hole are threadedly matched, which can further improve the limiting effect of the limiting member 60 on the connecting rod 40, improve the test accuracy, and facilitate disassembly.

[0038] In one embodiment, if Figure 2 As shown, the outer peripheral surface of the limiting member 60 has an annular protrusion 61, and one end of the shaft body 2A of the tooth piece 2 to be measured in the axial direction has a stop surface. Along the axial direction of the shaft body 2A of the tooth piece 2 to be measured, the other end of the connecting rod 40 is clamped between the annular protrusion 61 and the stop surface, that is, the stop surface and the annular protrusion 61 are respectively located on both sides of the other end of the connecting rod 40 to limit the other end of the connecting rod 40 to ensure the limiting effect of the connecting rod 40.

[0039] For example, the gear life test fixture 1 also includes a gasket 140, which can be arranged between the stop surface and the connecting rod 40, or the gasket 140 can be arranged between the annular protrusion 61 and the connecting rod 40. The gasket 140 can play a role in adjusting the gap to further improve the limiting effect, improve the test accuracy, and facilitate the matching of parts of different models, with high adaptability. The threaded part can be a screw, one end of which has an external thread and extends into the threaded hole to be threadedly matched with the shaft body 2A of the gear 2 to be tested. The other end of the connecting rod 40 is sleeved on the outer periphery of the screw and is clamped between the stop surface and the gasket 140 and the annular protrusion 61.

[0040] In one embodiment, if Figure 1As shown, the gear piece life test tool 1 also includes a mounting bracket 70 and a mounting seat 80. The mounting bracket 70 is arranged on the bottom plate 10; the mounting seat 80 is hinged to the mounting bracket 70, and the end of the cylinder 20 away from the connector 30 is mounted on the mounting seat 80. For example, the mounting seat 80 and the mounting bracket 70 can be hinged by a hinge pin 90, so that the cylinder body of the cylinder 20 can be adaptively adjusted according to the transmission process to ensure the rotation stability of the gear piece 2 to be tested.

[0041] In some embodiments, Figure 1 As shown, the gear life test tool 1 may also include: a control member, which is arranged on the driving mechanism, and the control member can control the movement stroke of the output end of the driving mechanism. For example, the output end is a push rod 21, and the control member may be two travel switches 100, one of the two travel switches 100 controls the starting point of the push rod 21, and the other controls the end point of the push rod 21, thereby indirectly controlling the starting point and end point of the rotation of the gear 2 to be tested, so as to facilitate testing. The travel switch 100 may also be connected to the controller for communication, so as to feedback information on the number of operations.

[0042] In some embodiments, Figure 1 As shown, the gear life test tool 1 may further include a second fixing seat 110, which is disposed on the bottom plate 10, and a plunger is disposed on the fixing seat and is located below the gear to be tested 2. Thus, the installation reliability of the plunger can be improved to ensure the test accuracy.

[0043] In some embodiments, a mounting groove 1101 is provided in the second fixing seat 110 , the plunger is installed in the mounting groove 1101 and at least a portion of the ball head 130 extends out of the mounting groove 1101 to engage with the gear piece 2 to be tested.

[0044] During installation, the shaft body 2A of the gear piece 2 to be tested can be passed through the first fixing seat 50 , and then the shaft body 2A of the gear piece 2 to be tested can be fixed to the other end of the connecting rod 40 by using a gasket 140 and a screw.

[0045] The following describes the life test process of the gear 2 to be tested in combination with the gear life test tool 1 of the embodiment of the present application: the driving force is provided by the cylinder 20 to drive the connector 30 to reciprocate back and forth, and then converted into rotational motion through the connecting rod 40. The starting point and end point of each reciprocating motion of the push rod 21 are controlled by the travel switch 100, thereby indirectly controlling the starting point and end point of the rotational motion of the gear 2 to be tested, and at the same time, the information of the number of active operations is fed back to the controller through the signal of the travel switch 100, and the test ends when the set number of times is reached.

[0046] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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; 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 elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0048] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0049] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A gear life test tool, characterized in that: include: Base plate; A driving mechanism, wherein the driving mechanism is arranged on the bottom plate; A transmission mechanism, the transmission mechanism is in transmission connection with the driving mechanism, and the driving mechanism can drive the gear to be tested to rotate through the transmission mechanism; The plunger is located on one side of the circumferential direction of the gear piece to be measured, and the plunger includes a ball head member and an elastic member. The ball head member is connected to the side of the elastic member facing the gear piece to be measured, and when the gear piece to be measured rotates, it can mesh with the ball head member and make the ball head member reciprocate in the radial direction of the gear piece to be measured.

2. The gear life test tool according to claim 1, characterized in that: Also includes: A first fixing seat, wherein the first fixing seat is arranged on the bottom plate, the plunger is located on one side of the first fixing seat, the transmission mechanism is located on the other side of the first fixing seat, the first fixing seat has a mounting hole, the shaft of the gear piece to be tested is passed through the mounting hole and is connected to the transmission mechanism.

3. The gear life test tool according to claim 2, characterized in that: The driving mechanism comprises a cylinder having a push rod; the transmission mechanism comprises: A connector, one end of which is connected to the push rod; A connecting rod, one end of which is hingedly connected to the other end of the connecting head, and the other end of which is connected to the shaft of the gear piece to be tested to drive the gear piece to be tested to rotate.

4. The gear life test tool according to claim 3, characterized in that: It also includes: a limiter, which is arranged on the side of the other end of the connecting rod away from the first fixing seat, and is used to limit the movement of the other end of the connecting rod along the axial direction of the shaft of the gear to be tested.

5. The gear life test tool according to claim 4, characterized in that: The limiting member is a threaded member, the shaft of the gear piece to be tested has a threaded hole, and the threaded member is threadedly matched with the threaded hole.

6. The gear life test tool according to claim 4, characterized in that: The outer peripheral surface of the limit member has an annular protrusion, one end of the shaft body of the gear piece to be tested in the axial direction has a stop surface, and along the axial direction of the shaft body of the gear piece to be tested, the other end of the connecting rod is clamped between the annular protrusion and the stop surface.

7. The gear life test tool according to claim 3, characterized in that: Also includes: A mounting bracket, the mounting bracket being arranged on the bottom plate; A mounting seat is hinged to the mounting bracket, and one end of the cylinder away from the connecting head is mounted on the mounting seat.

8. The gear life test tool according to claim 1, characterized in that: Also includes: A control member is provided on the driving mechanism, and the control member can control the movement stroke of the output end of the driving mechanism.

9. The gear life test tool according to claim 1, characterized in that: Also includes: A second fixing seat is arranged on the bottom plate, and the plunger is arranged on the fixing seat and is located below the tooth piece to be measured.

10. The gear life test tool according to claim 9, characterized in that: The second fixing seat is provided with a mounting groove, the plunger is mounted in the mounting groove and at least a portion of the ball head extends out of the mounting groove.

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