Wear test device for timing chain guide rail

Abstract

The utility model relates to the field of chain processing, and particularly discloses an abrasion test device for a timing chain guide rail. The wear test device comprises a mounting assembly and a driving assembly, the driving assembly comprises a power unit and a test wheel, and the power unit drives the test wheel to rotate; the mounting assembly comprises a mounting seat, a fixed mounting position and a tensioning assembly are arranged on the mounting seat, and the tensioning assembly comprises a tensioning adjusting mechanism and a tensioner; the tensioning adjusting mechanism comprises an adjusting seat, and the adjusting seat is connected with the mounting seat and can rotate and translate relative to the mounting seat; the tensioner is arranged on the adjusting seat, the tensioner comprises a main body, a tensioning adaptive plunger and an elastic piece, and the tensioning adaptive plunger is connected with the main body through the elastic piece. The abrasion test device can simulate the friction working condition between the guide rail and the chain, and has the advantages of being simple in structure and convenient to use.

Description

Technical Field

[0001] The utility model relates to the field of chain processing, in particular to a wear test device for a timing chain guide rail. Background Art

[0002] The main function of the engine timing system is to drive the engine's valve train so that the engine's intake and exhaust valves open or close at the appropriate time to ensure that the engine cylinders can inhale and exhaust air normally. Conventional engine timing systems use timing belts for transmission. For engines, timing belts are absolutely not allowed to fail. If a failure occurs, the engine will not work properly, and problems such as unstable idling, poor acceleration, or failure to start will occur. If the timing belt breaks, the engine will immediately stall.

[0003] Due to the characteristics of its rubber material, the timing belt will wear or age as the engine works longer. Therefore, with the continuous advancement of automobile manufacturing technology and industrial development, the timing belts of some engines have been replaced by timing chains. Compared with the timing belt, the timing chain has reliable transmission, good durability, and can also save space. The timing chain system is composed of components such as sprockets, chains, and tensioning devices. For example, the Chinese invention patent application with application publication number CN114352374A discloses a timing chain transmission system and an engine, and describes in detail a timing chain system, in which the tensioning device includes a guide rail, which is arranged on the outside of the timing chain, and is used to provide tension to the timing chain, so that the chain tension is consistent, ensuring that the timing chain works reliably and stably.

[0004] Due to the relative motion between the guide rail and the timing chain, the guide rail will inevitably wear out, and the amount of wear on the guide rail is closely related to the tension of the chain, running noise, etc. Therefore, it is necessary to test the wear performance of the timing chain guide rail. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a wear test device for a timing chain guide rail, which can simulate the friction working condition between the guide rail and the chain and has the advantages of simple structure and convenient use.

[0006] In order to solve the above technical problems, the technical solution provided by the utility model is as follows: a wear test device for a timing chain guide rail, comprising a mounting assembly and a driving assembly, wherein the driving assembly comprises a power unit and a test wheel, and the power unit drives the test wheel to rotate;

[0007] The mounting assembly comprises a mounting seat, on which a fixed mounting position and a tensioning assembly are arranged, and the tensioning assembly comprises a tensioning adjustment mechanism and a tensioner;

[0008] The tension adjustment mechanism comprises an adjustment seat, which is connected to the mounting seat and can be rotated and translated relative to the mounting seat; a fastener is also provided between the adjustment seat and the mounting seat;

[0009] The tensioner is arranged on the adjustment seat, and comprises a main body, a tensioning adapter plunger and an elastic member, wherein the tensioning adapter plunger is connected to the main body through the elastic member.

[0010] When conducting a wear test, rotate the fixed end of the guide rail in the fixed installation position to the movable limit position, so that the front of the guide rail contacts the test wheel, and the tensioning adapter plunger of the tensioner is aligned with the loading hole on the back of the guide rail. The tensioner is adjusted to a suitable angle through the tensioning adjustment mechanism, and ensure that the pressure between the tensioner and the guide rail reaches the preset value, completing the pre-test installation preparation of the guide rail.

[0011] The power unit works to drive the test wheel to rotate relative to the guide rail. The rotation of the test wheel is used to simulate the operation of the timing chain and rub against the guide rail. After running for a preset time, the wear performance of the guide rail is evaluated by observing the wear condition of the guide rail.

[0012] The wear test device of the present application can simulate the friction condition between the guide rail and the chain, and has the advantages of simple structure and convenient use. At the same time, compared with the chain test, the contact points between the test wheel and the guide rail are concentrated, and the test load is strengthened, which can accelerate the wear speed and improve the test efficiency.

[0013] Preferably, the power unit comprises a motor, the test wheel is sleeved on the output shaft of the motor and can be slidably adjusted along the axial direction of the output shaft, and the test wheel can flexibly cooperate with the guide rail.

[0014] Preferably, the mounting seat is provided with an elongated adjustment hole, and the adjustment seat is connected to the adjustment hole via a locking screw.

[0015] Preferably, the adjustment seat includes a first adjustment plate and a second adjustment plate, the first adjustment plate is connected to the mounting seat; the first adjustment plate and the second adjustment plate are slidably connected, and a locking screw is provided between the first adjustment plate and the second adjustment plate; the tensioner is arranged on the second adjustment plate.

[0016] The adjustment seat can be rotated and adjusted around the locking screw and adjusted in parallel along the extension direction of the adjustment hole. At the same time, the second adjustment plate can be slidably adjusted relative to the first adjustment plate to achieve multi-directional adjustment of the tensioner.

[0017] Preferably, the mounting assembly further comprises a base plate, the driving assembly and the mounting seat are respectively arranged on the base plate, and the driving assembly is located on one side of the mounting seat.

[0018] Preferably, the mounting base includes a first mounting plate and a second mounting plate which are vertically arranged, the first mounting plate and the second mounting plate are distributed front to back, and the height of the first mounting plate is smaller than that of the second mounting plate; one of the first mounting plate and the second mounting plate can be adjusted in a direction perpendicular to the first mounting plate, and the other can be adjusted in a direction parallel to the first mounting plate; the fixed mounting position is located on the first mounting plate, and the tensioning assembly is located on the second mounting plate.

[0019] The first mounting plate and the second mounting plate can be relatively adjusted in the horizontal and vertical directions to meet the installation requirements of products of different models. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the wear test device for the timing chain guide rail of this embodiment;

[0021] Figure 2 It is a front view of the wear test device for the timing chain guide rail of this embodiment;

[0022] Figure 3 is a top view of the wear test device for the timing chain guide rail of this embodiment;

[0023] Figure 4 This is a schematic structural diagram of the cooperation between the mounting assembly and the guide rail in the wear test device for the timing chain guide rail of this embodiment;

[0024] Figure 5 This is a schematic structural diagram of the cooperation between the mounting assembly and the tensioner in the wear test device for the timing chain guide rail of this embodiment;

[0025] Figure 6 An exploded view of the cooperation between the mounting assembly and the tensioner in the wear test device for the timing chain guide rail of this embodiment;

[0026] Figure 7 Schematic diagram of the structure of the tensioner in the wear test device for the timing chain guide rail of this embodiment;

[0027] Figure 8 It is a cross-sectional view of the tensioner in the wear testing device for the timing chain guide of this embodiment. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model. Example

[0029] like Figure 1-3As shown, a wear test device for a timing chain guide includes a mounting assembly and a drive assembly 1, wherein the drive assembly 1 includes a power unit 11 and a test wheel 12, and the power unit 11 drives the test wheel 12 to rotate.

[0030] like Figure 1-3 As shown, specifically, the power unit 11 includes a motor, the test wheel 12 is sleeved on the output shaft of the motor, and can be slidably adjusted along the axial direction of the output shaft, and the test wheel 12 can flexibly cooperate with the guide rail. Specifically, the test wheel 12 is connected to the output shaft of the motor through a flat key for transmission.

[0031] like Figure 4-Figure 6 As shown, the mounting assembly includes a mounting seat 3, on which a fixed mounting position 31 and a tensioning assembly are provided, and the tensioning assembly includes a tensioning adjustment mechanism 4 and a tensioner 5. The tensioning adjustment mechanism 4 includes an adjustment seat, which is connected to the mounting seat 3 and can be rotated and translated relative to the mounting seat 3. A fastener is also provided between the adjustment seat and the mounting seat 3.

[0032] Specifically, Figure 4-Figure 6 As shown, the mounting seat 3 is provided with a long strip-shaped adjustment hole 34, and the adjustment seat is connected to the adjustment hole 34 through a locking screw 43. Further, the adjustment seat includes a first adjustment plate 42 and a second adjustment plate 41, and the first adjustment plate 42 is connected to the mounting seat 3. The first adjustment plate 42 and the second adjustment plate 41 are slidably connected, and a locking screw 43 is provided between the first adjustment plate 42 and the second adjustment plate 41. The adjustment seat can be rotated and adjusted around the locking screw 43, and can be adjusted in parallel along the extension direction of the adjustment hole 34, and the second adjustment plate 41 can be slidably adjusted relative to the first adjustment plate 42, so as to realize multi-directional adjustment of the tensioner 5.

[0033] like Figure 7 and Figure 8 As shown, the tensioner 5 is arranged on the second adjustment plate 41, and the tensioner 5 includes a main body 53, a tensioning adapter plunger 51 and an elastic member 52. The tensioning adapter plunger 51 is connected to the main body 53 through the elastic member 52, and a pressure sensor 54 is also provided between the tensioning adapter plunger 51 and the main body 53.

[0034] like Figure 4-Figure 6As shown, further, the mounting assembly also includes a base plate 2, the drive assembly 1 and the mounting seat 3 are respectively arranged on the base plate 2, and the drive assembly 1 is located on one side of the mounting seat 3. The mounting seat 3 includes a first mounting plate 33 and a second mounting plate 32 arranged vertically, the first mounting plate 33 and the second mounting plate 32 are distributed front and back, and the height of the first mounting plate 33 is smaller than that of the second mounting plate 32. One of the first mounting plate 33 and the second mounting plate 32 can be adjusted in a direction perpendicular to the first mounting plate 33, and the other can be adjusted in a direction parallel to the first mounting plate 33. The fixed mounting position 31 is located on the first mounting plate 33, and the tensioning assembly is located on the second mounting plate 32. The first mounting plate 33 and the second mounting plate 32 can be relatively adjusted in the horizontal and vertical directions to meet the installation requirements of different models of products.

[0035] When conducting a wear test, the fixed end of the guide rail 6 is rotated to a movable limit position in the fixed installation position 31, the front of the guide rail 6 contacts the test wheel 12, the tensioning adapter plunger 51 of the tensioner 5 is aligned with the loading hole on the back of the guide rail 6, and the tensioner 5 is adjusted to a suitable angle through the tensioning adjustment mechanism 4, and it is ensured that the pressure between the tensioner 5 and the guide rail reaches a preset value, thereby completing the pre-test installation preparation of the guide rail 6.

[0036] The power unit 11 works to drive the test wheel 12 to rotate relative to the guide rail 6. The rotation of the test wheel is used to simulate the operation of the timing chain and rub against the guide rail. After running for a preset time, the wear performance of the guide rail 6 is evaluated by observing the wear condition of the guide rail 6.

[0037] The wear test device of the present application can simulate the friction condition between the guide rail and the chain, and has the advantages of simple structure and easy use.

[0038] In short, 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 and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wear test device for a timing chain guide, characterized in that: It includes a mounting assembly and a driving assembly, wherein the driving assembly includes a power unit and a test wheel, and the power unit drives the test wheel to rotate; The mounting assembly comprises a mounting seat, on which a fixed mounting position and a tensioning assembly are arranged, and the tensioning assembly comprises a tensioning adjustment mechanism and a tensioner; The tension adjustment mechanism comprises an adjustment seat, which is connected to the mounting seat and can be rotated and translated relative to the mounting seat; a fastener is also provided between the adjustment seat and the mounting seat; The tensioner is arranged on the adjustment seat, and comprises a main body, a tensioning adapter plunger and an elastic member, wherein the tensioning adapter plunger is connected to the main body through the elastic member.

2. The wear test device according to claim 1, characterized in that: The power unit comprises a motor, and the test wheel is sleeved on the output shaft of the motor and can be slidably adjusted along the axial direction of the output shaft.

3. The wear test device according to claim 1, characterized in that: The mounting seat is provided with a long strip-shaped adjustment hole, and the adjustment seat is connected to the adjustment hole through a locking screw.

4. The wear testing device according to claim 3, characterized in that: The adjustment seat includes a first adjustment plate and a second adjustment plate, the first adjustment plate is connected to the mounting seat; the first adjustment plate and the second adjustment plate are slidably connected, and a locking screw is provided between the first adjustment plate and the second adjustment plate; the tensioner is arranged on the second adjustment plate.

5. The wear test device according to any one of claims 1 to 4, characterized in that: The installation assembly also includes a base plate, the drive assembly and the installation seat are respectively arranged on the base plate, and the drive assembly is located on one side of the installation seat.

6. The wear test device according to claim 5, characterized in that: The mounting base includes a first mounting plate and a second mounting plate which are vertically arranged. The first mounting plate and the second mounting plate are distributed front to back, and the height of the first mounting plate is smaller than that of the second mounting plate. One of the first mounting plate and the second mounting plate can be adjusted in a direction perpendicular to the first mounting plate, and the other can be adjusted in a direction parallel to the first mounting plate. The fixed mounting position is located on the first mounting plate, and the tensioning assembly is located on the second mounting plate.

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