Saw chain fatigue testing device

Abstract

The utility model discloses a saw chain fatigue testing device which comprises a saw chain, a driving mechanism is arranged on one side of the saw chain, the driving mechanism is a motor, the motor comprises an output shaft, a first chain wheel is fixedly arranged on the front section of the output shaft, one end of the saw chain is located on the first chain wheel, and the other end of the saw chain is located on the saw chain. One end of the saw chain is provided with a motor, the other end of the saw chain is provided with a rod body, the rod body is provided with a second chain wheel, and the other end of the saw chain is located on the second chain wheel. Whether the saw chain after being tensioned again through pulling of the air cylinder meets the qualified requirement or not after the fatigue test.

Description

Technical Field

[0001] This utility model relates to the field of saw chain technology, and in particular to a saw chain fatigue testing device. Background Technology

[0002] Currently, saw chains mainly consist of: connecting plates, blades, drive plates, and chain shafts. The connection between the connecting plates, blades, and drive plates is achieved through stepped chain shafts. After installation, the saw chain needs to undergo fatigue testing to check its fatigue strength and service life.

[0003] In the prior art, the main purpose of saw chain fatigue testing is to simulate different working conditions experienced by the saw chain during its service life. For example, in the published document CN210923039U, the fatigue test of the saw chain is completed quickly under different speed and time conditions while keeping the saw chain under tension. However, it is impossible to identify the qualification of the saw chain after the fatigue test.

[0004] Therefore, the applicant submits this application. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a saw chain fatigue testing device, which uses the operation of a cylinder to identify the pass / fail status of the saw chain after fatigue testing.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A saw chain fatigue testing device includes a saw chain, a drive mechanism (a motor) is provided on one side of the saw chain, the motor includes an output shaft, a first sprocket is fixedly provided at the front end of the output shaft, one end of the saw chain is located on the first sprocket, a rod is provided at the other end of the saw chain, a second sprocket is provided on the rod, and the other end of the saw chain is located on the second sprocket.

[0008] In the above scheme, preferably, the second sprocket is fixedly mounted on the rod.

[0009] In the above scheme, preferably, a movable component is fixedly provided on the rod body, a slide rail is provided below the movable component, the movable component is slidably disposed on the slide rail, and a pointer is provided on the movable component.

[0010] In the above scheme, preferably, the slide rail is a guide slide rail.

[0011] In the above scheme, preferably, a cylinder is provided on one side of the slide rail, the cylinder includes a piston rod, and the front end of the piston rod is fixedly disposed on the wall of the moving part.

[0012] In the above scheme, preferably, a support block is provided on the outside of the cylinder, and a scale is provided on the support block, with the scale located directly above the pointer.

[0013] In the above scheme, preferably, the motor is a servo motor.

[0014] In the above scheme, preferably, the first sprocket and the second sprocket include chain teeth that mesh and rotate with the saw chain.

[0015] In the above scheme, preferably, a bracket is provided below the motor, and the motor is located on the bracket.

[0016] In the above scheme, preferably, the bracket, the slide rail, and the cylinder are located on the same plane.

[0017] The beneficial effects of this utility model are: by setting the motor, the tensioned saw chain can rotate at different speeds under time conditions. After the rotation speed ends, the saw chain is re-tensioned by the cylinder and the fatigue test is performed to see if the saw chain meets the qualification requirements. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the interaction between the motor and the first link in this utility model.

[0020] Figure 3 This is a schematic diagram showing the cooperation between the rod body, the second sprocket, and the moving parts in this utility model. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0022] See Figures 1-3 A chainsaw fatigue testing device includes a chainsaw 1, which is the core component of the chainsaw and is mainly used to cut obstacles such as wood and metal. To test the fatigue level of the chainsaw 1, a first sprocket 101 is provided at one end of the chainsaw 1, and a rod 4 is provided at the other end of the chainsaw 1. A second sprocket 102 is provided on the rod 4. The second sprocket 102 is rotatably mounted on the rod 4. The first sprocket 101 and the second sprocket 102 include chain teeth 12 that are adapted to mesh and rotate with the chainsaw.

[0023] Specifically, a drive mechanism is provided on one side of the first sprocket 101. The drive mechanism is a motor 2. The motor 2 includes an output shaft 3. The front end of the output shaft 3 is fixedly mounted on the first sprocket 101. The motor 2 drives the first sprocket 101 to rotate. The first sprocket 101 drives the saw chain 1 to rotate on the first sprocket 101 and the second sprocket 102 for fatigue testing. In this embodiment, the motor 2 is a servo motor. The core advantages of the servo motor are its high-precision control, fast response capability and high-efficiency and energy-saving operation characteristics.

[0024] Furthermore, a movable part 5 is also provided on the rod body 4, and a slide rail 6 is provided below the movable part 5. The movable part 5 is slidably disposed on the slide rail 6. In this embodiment, the slide rail 6 is a guide slide rail, which has the stability of unidirectional sliding.

[0025] To drive the moving part 5 to slide on the slide rail 6, a cylinder 8 is provided on one side of the slide rail 6. The cylinder 8 includes a piston rod 9, the front end of which is fixed to the wall of the moving part 5. The extension and retraction of the cylinder 8 drives the moving part 5 to slide on the slide rail 6. To identify whether the saw chain 1 can continue to be used after the fatigue test, a pointer 7 is fixedly provided on the moving part 5. A support block 10 is fixedly provided on the outside of the cylinder 8. A scale 11 is fixedly provided on the support block 10. The scale 11 is located directly above the pointer 7. When the saw chain 1 is in a tensioned state, the pointer 7 is located at the initial position of the scale 11, such as the 0 mark.

[0026] After the saw chain 1 has undergone a set number of rotations at different speeds for a set time, the cylinder 8 contracts, causing the moving part 5 to slide outwards on the slide rail 6, thus re-tensioning the saw chain 1. The pointer 7 on the moving part 5 changes position. The distance of the saw chain 1 after the initial tensioning and after the fatigue test is completed meets the required acceptable range. When the saw chain 1 is tensioned again after the rotation fatigue test, the distance after this tensioning meets the required acceptable range for the tensioning distance after the fatigue test of the saw chain 1. This batch of saw chains 1 has passed the fatigue test and has met the fatigue test standard and the service life standard.

[0027] A bracket 13 is installed below the motor 2, and the motor 2 is located on the bracket 13. The bracket 13, the slide rail 6 and the cylinder 8 are on the same plane, providing a good and stable environment for testing the rotation of the saw chain 1.

[0028] Installation method and working principle of saw chain 1: One end of saw chain 1 is installed on the first sprocket 101, and the other end of saw chain 1 is installed on the second sprocket 102. At this time, saw chain 1 is in a loose state. Since the rod body 4 is provided with a moving part 5, the moving part 5 is slidably set on the slide rail 6. The piston rod 9 of the cylinder 8 is fixed to the wall of the moving part 5. When the cylinder 8 works, it retracts and drives the moving part 5 to slide outward on the slide rail 6 to tension the saw chain 1. When the saw chain 1 is in a tensioned state, the pointer 7 fixed on the moving part 5 is located at the initial position of the scale 11, such as the 0 mark. The working rotation of the motor 2 drives the first sprocket 101 to rotate. The first sprocket 101 drives the saw chain 1 to rotate on the first sprocket 101 and the second sprocket 102. After the saw chain 1 has rotated a number of times at different speeds within a set time, the cylinder 8 retracts and causes the moving part 5 to slide outward again on the slide groove to tension the saw chain 1 again and check whether the saw chain 1 meets the fatigue test requirements.

[0029] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A saw chain fatigue testing device, comprising a saw chain (1), characterized in that: A drive mechanism is provided on one side of the saw chain (1). The drive mechanism is a motor (2). The motor (2) includes an output shaft (3). A first sprocket (101) is fixedly provided at the front end of the output shaft (3). One end of the saw chain (1) is located on the first sprocket (101). A rod (4) is provided at the other end of the saw chain (1). A second sprocket (102) is provided on the rod (4). The other end of the saw chain (1) is located on the second sprocket (102). The second sprocket (102) is fixedly mounted on the rod (4); A movable part (5) is fixedly installed on the rod (4), and a slide rail (6) is provided below the movable part (5). The movable part (5) is slidably installed on the slide rail (6), and a pointer (7) is provided on the movable part (5). A cylinder (8) is provided on one side of the slide rail (6). The cylinder (8) includes a piston rod (9). The front end of the piston rod (9) is fixedly disposed on the wall of the moving part (5). A support block (10) is provided on the outside of the cylinder (8), and a scale (11) is provided on the support block (10), which is located directly above the pointer (7).

2. The saw chain fatigue testing device according to claim 1, characterized in that: The slide rail (6) is a guide slide rail.

3. The saw chain fatigue testing device according to claim 1, characterized in that: The motor (2) is a servo motor.

4. The saw chain fatigue testing device according to claim 1, characterized in that: The first sprocket (101) and the second sprocket (102) include chain teeth (12) that are adapted to mesh and rotate with the saw chain (1).

5. The saw chain fatigue testing device according to claim 1, characterized in that: A bracket (13) is provided below the motor (2), and the motor (2) is located on the bracket (13).

6. The saw chain fatigue testing device according to claim 5, characterized in that: The bracket (13), the slide rail (6), and the cylinder (8) are located on the same plane.

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