A sprocket durability test bench

Abstract

The present invention discloses a sprocket durability test bench, which applies an axial load to the sprocket through an axial load loading component, a chain simulation component simulates the chain transmission connection to the sprocket, and a radial load loading component applies tension to the chain simulation component, so that the chain simulation component applies a radial load to the sprocket, and realizes the application of axial and radial alternating loads to the sprocket to simulate the alternating load simulation of the rotation state of the sprocket under actual working conditions. The sprocket durability test bench provided by the present invention can effectively simulate the operating state of the sprocket under actual working conditions, and applies a chain force that simulates the random alternation of actual working conditions to the sprocket, so that the axial and radial alternating loads on the sprocket in the durability test are more in line with the actual scene.

Description

Technical Field

[0001] The invention belongs to the technical field of sprocket testing equipment, and in particular relates to a sprocket durability test bench. Background Art

[0002] With the development of coal mining industry, scraper has become the primary conveying equipment after coal is collected in the mine, and sprocket, as the main component of scraper, has become one of the main indicators of scraper performance. Due to the harsh working environment of scraper, the sprocket has to bear huge radial random alternating loads while rotating, which will cause the sprocket oil seal to wear or damage faster, and then cause the sprocket to leak oil. Therefore, it is of great significance to test the durability of the sprocket on the sprocket test bench.

[0003] The sprocket test bench in the prior art generally uses a tightening cylinder to apply a constant tensioning force to the chain connected to the sprocket transmission. It is unable to apply a randomly alternating chain force to the sprocket that simulates actual working conditions, that is, a radial force that the sprocket cannot be subjected to. Therefore, the sprocket test bench in the prior art cannot be used for sprocket durability testing, let alone accelerated durability testing of the sprocket. Summary of the invention

[0004] In view of the deficiencies in the above-mentioned related technologies, the present invention provides a sprocket durability test bench to solve the problem that the sprocket test bench in the prior art cannot apply a randomly alternating chain force to the sprocket that simulates actual working conditions.

[0005] In order to achieve the above technical objectives, the present invention is implemented according to the following technical solutions:

[0006] A sprocket durability test bench, comprising:

[0007] Sprocket bracket, used to mount the sprocket to be tested;

[0008] A chain simulation component, arranged to be connected to the sprocket and used to simulate the transmission connection of the chain to the sprocket;

[0009] an axial load applying assembly, arranged to be drivingly connected to the sprocket and used to apply an axial load to the sprocket;

[0010] The radial load loading assembly is connected to the chain simulation assembly and is used to apply tension to the chain simulation assembly so that the chain simulation assembly applies a radial load to the sprocket.

[0011] Furthermore, the chain simulation component includes:

[0012] A chain simulation bracket connected to the radial load applying assembly;

[0013] A sleeve, axially rotatably arranged on the chain simulation bracket, wherein the sleeve sleeve is coaxially detachably connected to the sprocket;

[0014] The roller group is arranged on the chain simulation bracket and close to the sleeve, and the rollers on the roller group can roll on the sleeve.

[0015] Furthermore, a first convex portion is provided on the side of the sprocket, and a second convex portion is provided on the inner wall of the sleeve, and the sleeve is coaxially fixedly connected to the sprocket through the engagement of the first convex portion with the second convex portion.

[0016] Furthermore, the first end portion of the chain simulation bracket is movably connected to the sprocket bracket, and the first end portion of the chain simulation bracket is also connected to the radial load loading assembly, and the roller group is arranged on the side of the sleeve away from the chain simulation assembly.

[0017] Furthermore, the roller assembly includes two rollers, and the two rollers are symmetrically arranged relative to an extension line of the force application direction of the radial load loading assembly.

[0018] Furthermore, the radial load applying assembly comprises:

[0019] Cylinder bracket;

[0020] The cylinder barrel of the oil cylinder is connected to the oil cylinder bracket, the piston rod of the oil cylinder is connected to the chain simulation bracket, and the central axis of the piston rod is in the same straight line with a radial axis on the sleeve.

[0021] Furthermore, the oil cylinder and the sleeve are both arranged horizontally, and the height of the central axis of the piston rod is the same as the height of the central axis of the sleeve.

[0022] Furthermore, the oil cylinder is hinged to the oil cylinder bracket, and the piston rod is hinged to the chain simulation bracket.

[0023] Furthermore, the axial load loading assembly comprises:

[0024] A rotating shaft, axially connected to the sprocket;

[0025] The motor is drivingly connected to the rotating shaft and is used to drive the rotating shaft to rotate axially.

[0026] Furthermore, the sprocket bracket includes:

[0027] Support frame;

[0028] Two connecting plates are arranged opposite to each other on the support frame. After the sprocket passes through the two connecting plates in sequence, it is respectively connected to one of the connecting plates for axial rotation.

[0029] The sprocket durability test bench provided by the present invention applies an axial load to the sprocket through an axial load loading component, a chain simulation component simulates the chain transmission connection to the sprocket, and a radial load loading component applies tension to the chain simulation component, so that the chain simulation component applies a radial load to the sprocket, thereby realizing the application of axial and radial alternating loads to the sprocket to simulate the alternating load simulation of the rotational state of the sprocket under actual working conditions. It can be seen that the sprocket durability test bench provided by the present invention can effectively simulate the operating state of the sprocket under actual working conditions, and applies to the sprocket a chain force that simulates the random alternation of actual working conditions, so that the axial and radial alternating loads to which the sprocket is subjected in the durability test are more in line with the actual scenario.

[0030] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0031] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0033] Figure 1 A schematic structural diagram of a sprocket durability test bench according to an exemplary embodiment of the present invention;

[0034] Figure 2 A front view of a sprocket durability test bench according to an exemplary embodiment of the present invention;

[0035] Figure 3 A top view of a sprocket durability test bench according to an exemplary embodiment of the present invention;

[0036] Figure 4 for Figure 2 Section view at AA;

[0037] Figure 5 for Figure 2 Sectional view at BB;

[0038] Figure 6 for Figure 2 Cross-section at CC.

[0039] In the figure:

[0040] 1-sprocket bracket, 101-support frame, 102-connecting plate.

[0041] 2-chain simulation assembly, 201-chain simulation bracket, 202-sleeve, 203-roller assembly;

[0042] 3-axial load loading assembly, 301-rotating shaft, 302-motor, 303-reducer;

[0043] 4- radial load loading assembly, 401- oil cylinder bracket, 402- oil cylinder;

[0044] 5-sprocket;

[0045] 6- Base. DETAILED DESCRIPTION

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0048] In the present invention, 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 or an electrical connection; it can be a direct connection, or it can be an indirect connection 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 present invention can be understood according to specific circumstances.

[0049] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0050] The present invention provides a sprocket durability test bench, see Figures 1 to 3, including a sprocket bracket 1, a chain simulation component 2, an axial load loading component 3 and a radial load loading component 4, the sprocket bracket 1 is used to install the sprocket 5 to be tested; the chain simulation component 2 is configured to be connected to the sprocket 5, and is used to simulate the transmission connection of the chain to the sprocket 5; the axial load loading component 3 is configured to be driven and connected to the sprocket 5, and is used to apply an axial load to the sprocket 5; the radial load loading component 4 is connected to the chain simulation component 2, and is used to apply tension to the chain simulation component 2, so that the chain simulation component 2 applies a radial load to the sprocket 5.

[0051] The sprocket durability test bench provided by the present invention applies an axial load to the sprocket 5 through the axial load loading component 3, the chain simulation component 2 simulates the chain transmission connection to the sprocket 5, and the radial load loading component 4 applies tension to the chain simulation component 2, so that the chain simulation component 2 applies a radial load to the sprocket 5, thereby realizing the application of axial and radial alternating loads to the sprocket 5 to simulate the alternating load simulation of the rotation state of the sprocket 5 under actual working conditions. It can be seen that the sprocket durability test bench provided by the present invention can effectively simulate the operating state of the sprocket 5 under actual working conditions, and apply to the sprocket 5 a chain force that simulates the random alternation of the actual working conditions, so that the axial and radial alternating loads to the sprocket 5 in the durability test are more in line with the actual scene.

[0052] In some embodiments, see Figures 4 to 6 The chain simulation component 2 includes a chain simulation bracket 201, a sleeve 202 and a roller group 203. The chain simulation bracket 201 is connected to the radial load loading component 4; the sleeve 202 is axially rotatably arranged on the chain simulation bracket 201, and the sleeve 202 is coaxially detachably connected to the sprocket 5; the roller group 203 is arranged on the chain simulation bracket 201 and close to the sleeve 202, and the roller on the roller group 203 can roll on the sleeve 202. In this embodiment, by sleeve 202 being sleeved on sprocket 5 and fixed coaxially with sprocket 5, sleeve 202 can rotate with the axial rotation of sprocket 5, and when sleeve 202 rotates, roller group 203 provided on chain simulation bracket 201 rolls on sleeve 202. Therefore, after sleeve 202 is linked with sprocket 5, the transmission cooperation of sprocket 5 between sleeve 202 and roller group 203 can simulate the transmission connection of chain to sprocket 5, and then tensile force is applied to chain simulation bracket 201 provided with sleeve 202 through radial load loading component 4, so that radial load can be applied to sprocket 5 through sleeve 202 and roller group 203.

[0053] In some embodiments, a first convex portion is provided on the side of the sprocket 5, a second convex portion is provided on the inner wall of the sleeve 202, and the sleeve 202 is coaxially fixedly connected to the sprocket 5 through the engagement of the first convex portion and the second convex portion. The sprocket 5 is fixedly connected to the sleeve 202 through the engagement of the first convex portion and the second convex portion, which can ensure that the sprocket 5 and the sleeve 202 are connected stably, and the sleeve 202 is ensured to rotate axially with the rotation of the sprocket 5, so that the transmission of the chain to the sprocket 5 simulated by the transmission cooperation between the sleeve 202 and the sprocket 5 is more in line with the actual scene.

[0054] In other embodiments, the first end of the chain simulation bracket 201 is movably connected to the sprocket bracket 1, and the first end of the chain simulation bracket 201 is also connected to the radial load loading assembly 4, and the roller group 203 is arranged on the side of the sleeve 202 away from the chain simulation assembly 2. Since the first end portion of the chain simulation bracket 201 is movably connected to the sprocket bracket 1, the chain simulation bracket 201 can be forcefully applied by the radial load loading assembly 4 connected to the first end portion of the chain simulation bracket 201, so that the chain simulation bracket 201 moves on the sprocket bracket 1 under the thrust or tension of the radial load loading assembly 4. At the same time, by arranging the roller group 203 close to the side of the sleeve 202 away from the chain simulation assembly 2, when the radial load loading assembly 4 applies force to the chain simulation bracket 201, the roller group 203 applies another set of radial loads to the sleeve 202 on the side of the sleeve 202 away from the chain simulation assembly 2, so that the radial load applied to the sprocket 5 by the chain simulated by the sleeve 202 and the roller group 203 is more in line with the actual scene.

[0055] Furthermore, the roller assembly 203 includes two rollers, and the two rollers are symmetrically arranged relative to the extension line of the force direction of the radial load loading component 4. In this embodiment, by symmetrically arranging the two rollers relative to the extension line of the force direction of the radial load loading component 4, the radial load loading component 4 can simulate the radial load applied by the chain to the sprocket 5 when applying force to the chain simulation bracket 201, thereby making the radial load applied by the chain simulation component 2 to the sprocket 5 more in line with the actual scene.

[0056] In some other embodiments, the radial load loading assembly 4 includes a cylinder support 401 and a cylinder 402, the cylinder barrel of the cylinder 402 is connected to the cylinder support 401, the piston rod of the cylinder 402 is connected to the chain simulation support 201, and the central axis of the piston rod is in the same straight line with a radial axis on the sleeve 202. In this embodiment, the chain simulation support 201 is driven to move by the extension and contraction of the piston rod of the cylinder 402 to control the chain simulation support 201 to apply a radial load to the sprocket 5. At the same time, by making the central axis of the piston rod and a radial axis on the sleeve 202 in the same straight line, the piston rod applies force to the chain simulation support 201 on this radial axis on the sleeve 202, so that the chain simulation support 201 applies a load to the sleeve 202 on this radial axis on the sleeve 202, so that the chain simulation assembly 2 applies a load to the sprocket 5 on this radial axis with the sleeve 202.

[0057] Furthermore, the oil cylinder 402 and the sleeve 202 are both arranged horizontally, and the height of the central axis of the piston rod is the same as the height of the central axis of the sleeve 202, so that when the preset radial axis of the sleeve 202 is the horizontal radial axis of the sleeve 202, the force applied by the piston rod to the chain simulation component 2 can be on the horizontal radial axis of the sleeve 202.

[0058] Furthermore, the cylinder 402 is hinged to the cylinder bracket 401, and the piston rod is hinged to the chain simulation bracket 201, so that the vertical force between the cylinder 402 and the cylinder bracket 401, and between the piston rod and the chain simulation bracket 201 can be removed, so that the radial load applied by the chain simulation component 2 to the sprocket 5 is more in line with the actual scene.

[0059] In some embodiments, the axial load loading assembly 3 includes a rotating shaft 301 and a motor 302, wherein the rotating shaft is axially connected to the sprocket 5; the motor 302 is drivingly connected to the rotating shaft for driving the rotating shaft to rotate axially. In this embodiment, the axial load loading assembly 3 also includes a reducer 303, wherein the first end of the rotating shaft 301 is axially connected to the sprocket 5, the second end of the rotating shaft 301 is connected to the reducer 303, and the reducer 303 is also drivingly connected to the output shaft of the motor 302.

[0060] In some embodiments, the sprocket bracket 1 includes a support frame 101 and two connecting plates 102, the two connecting plates 102 are relatively arranged on the support frame 101, and the sprocket 5 passes through the two connecting plates 102 in sequence and is axially rotatably connected to one connecting plate 102 respectively. Preferably, the sprocket durability test bench also includes a base 6, and the sprocket bracket 1, the chain simulation component 2, the axial load loading component 3 and the radial load loading component 4 are all arranged on the base 6.

[0061] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A sprocket durability test bench, characterized in that: include: A sprocket support (1) for mounting a sprocket (5) to be tested; A chain simulation component (2) is arranged to be connected to the sprocket (5) and is used to simulate the transmission connection between the chain and the sprocket (5); An axial load applying assembly (3) is arranged to be drivingly connected to the sprocket (5) and is used to apply an axial load to the sprocket (5); A radial load loading component (4) is connected to the chain simulation component (2) and is used to apply a tensile force to the chain simulation component (2), so that the chain simulation component (2) applies a radial load to the sprocket (5); The chain simulation component (2) comprises: A chain simulation bracket (201) connected to the radial load loading component (4); A sleeve (202) is axially rotatably disposed on the chain simulation bracket (201), and the sleeve (202) is coaxially detachably connected to the sprocket (5); A roller group (203) is arranged on the chain simulation bracket (201) and is disposed close to the sleeve (202), and the rollers on the roller group (203) can roll on the sleeve (202); A first convex portion is provided on the side of the sprocket (5), a second convex portion is provided on the inner wall of the sleeve (202), and the sleeve (202) is coaxially fixedly connected to the sprocket (5) through the engagement of the first convex portion with the second convex portion; The first end of the chain simulation bracket (201) is movably connected to the sprocket bracket (1), and the first end of the chain simulation bracket (201) is also connected to the radial load loading assembly (4), and the roller assembly (203) is arranged on a side of the sleeve (202) away from the chain simulation assembly (2); The sprocket bracket (1) comprises: Support frame (101); The two connecting plates (102) are arranged on the support frame (101) opposite to each other, and the sprocket (5) passes through the two connecting plates (102) in sequence and is axially rotatably connected to each of the connecting plates (102).

2. The sprocket durability test bench according to claim 1, characterized in that: The roller assembly (203) comprises two rollers, and the two rollers are symmetrically arranged relative to an extension line of the force application direction of the radial load loading component (4).

3. The sprocket durability test bench according to claim 1, characterized in that: The radial load applying assembly (4) comprises: Cylinder support (401); The cylinder (402) has a cylinder barrel connected to the cylinder support (401), the piston rod of the cylinder (402) is connected to the chain simulation support (201), and the central axis of the piston rod is in the same straight line with a radial axis on the sleeve (202).

4. The sprocket durability test bench according to claim 3, characterized in that: The oil cylinder (402) and the sleeve (202) are both arranged horizontally, and the height of the central axis of the piston rod is the same as the height of the central axis of the sleeve (202).

5. The sprocket durability test bench according to claim 3, characterized in that: The oil cylinder (402) is hinged to the oil cylinder bracket (401), and the piston rod is hinged to the chain simulation bracket (201).

6. The sprocket durability test bench according to claim 1, characterized in that: The axial load applying assembly (3) comprises: A rotating shaft (301) axially connected to the sprocket (5); The motor (302) is drivingly connected to the rotating shaft and is used to drive the rotating shaft (301) to rotate axially.

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