A testing machine for measuring the force of a chain

Abstract

The utility model discloses a test machine for chain force measurement, including base, the top of base is fixedly connected with test box, and is provided with test cavity in test box, the bottom of test cavity inner wall is fixedly connected with first clamping pneumatic cylinder, and is provided with the adjusting seat of adjustable height in test cavity, and the bottom of adjusting seat is provided with second clamping pneumatic cylinder, the jaw of first clamping pneumatic cylinder and second clamping pneumatic cylinder respectively is used for clamping the both ends of single chain of waiting test, and the jaw outside of second clamping pneumatic cylinder and first clamping pneumatic cylinder respectively is rotatably connected with driving sprocket and driven sprocket, the utility model discloses beneficial effect: the utility model through integration static tensile, dynamic operation and water spraying environment simulation etc. function, realized the comprehensive test of the mechanical property of chain under dry state, wet state, static and dynamic operation state, not only can carry out traditional limit tensile test, can more accurate simulation chain in actual work bears the compound working condition of tension, transmission load and slush environment.

Description

Technical Field

[0001] This utility model relates to the field of chain testing technology, specifically a testing machine for measuring chain force. Background Technology

[0002] Chains, as connecting and transmission components, play a vital role in various mechanical equipment. Their strength, durability, and reliability directly affect the operational safety and efficiency of the entire system. Therefore, conducting scientific force tests on chains to ensure they meet design requirements and usage conditions is an important means of ensuring production safety and improving product quality.

[0003] Currently, chain force testing machines on the market mainly focus on performing a single static tensile test on the chain to obtain its ultimate tensile strength. These devices fix both ends of the chain through two clamping mechanisms and apply axial tension for testing. However, the function of these testing machines is relatively simple and cannot reproduce the accelerated wear caused by slippery failure in muddy and watery environments. This leads to a certain deviation between the test results and the actual service life of the chain. Therefore, we propose a chain force testing machine. Utility Model Content

[0004] The purpose of this invention is to provide a testing machine for measuring the force of chains, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a testing machine for measuring the force of a chain, comprising a base, a test chamber fixedly connected to the top of the base, and a test cavity provided inside the test chamber. A first clamping cylinder is fixedly connected to the bottom of the inner wall of the test cavity. A height-adjustable adjustment seat is provided inside the test cavity, and a second clamping cylinder is provided at the bottom of the adjustment seat. The jaws of the first and second clamping cylinders are respectively used to clamp the two ends of a single chain to be tested. A drive sprocket and a driven sprocket are rotatably connected to the outer sides of the jaws of the second and first clamping cylinders, respectively. A test chain is provided on the outer sides of the drive and driven sprockets. A water distribution tank is provided on the inner wall of the test cavity, and spray nozzles for spraying water toward the chain are equidistantly arranged on the surface of the water distribution tank.

[0006] Preferably, the test chamber has mounting cavities on both side walls, and the mounting cavities are connected to the test chamber. Both ends of the adjusting seat extend into the mounting cavities. A mounting plate is fixedly connected to the mounting cavity. A hydraulic cylinder is fixedly installed at the bottom of the mounting plate, and the piston rod end of the hydraulic cylinder passes through the mounting plate and is fixedly connected to the adjusting seat.

[0007] Preferably, a drive motor is mounted on the outside of the gripper of the second clamping cylinder, and the output shaft end of the drive motor is fixedly connected to the central shaft of the drive sprocket.

[0008] Preferably, the mounting cavity is provided with a telescopic protective cloth at the opening end of the test cavity, and the adjusting seat passes through the telescopic protective cloth.

[0009] Preferably, a tactile switch is installed at one end of the top of the adjusting seat, four sliding holes are equally spaced at the top center of the adjusting seat, and a sliding rod is slidably connected in each of the four sliding holes. A mounting base is fixed to the bottom of the four sliding rods, the second clamping cylinder is fixedly installed at the bottom of the mounting base, a support plate is connected to the top of the four sliding rods, the sliding rod slides through the support plate, a nut is threaded to the outer side of the top of the sliding rod, and a spring is sleeved on the outer side of the sliding rod between the support plate and the adjusting seat.

[0010] Preferably, the test chamber has a door hinged to its opening end, and the surface of the door is provided with an observation window.

[0011] Preferably, a water pump is installed in the mounting cavity on one side of the test chamber. The water inlet of the water pump is connected to an external water supply tank through a connecting pipe. The water outlet of the water pump is fixedly connected to an outlet pipe, and the end of the outlet pipe extends into the test chamber and is connected to a water distribution tank.

[0012] Preferably, a limiting rod is symmetrically fixed between the top of the mounting plate and the inner wall of the mounting cavity, and a limiting hole is symmetrically opened at one end of the adjusting seat located inside the mounting cavity, and the limiting rod is slidably connected in the limiting hole.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: By integrating functions such as static tension, dynamic operation, and water spray environment simulation, this utility model realizes comprehensive testing of the mechanical properties of the chain in dry, wet, static, and dynamic operating states. It can not only perform traditional ultimate tensile tests, but also accurately simulate the complex working conditions of the chain under tension, transmission load, and muddy environment in actual work. The test results are closer to the real use situation, significantly improving the accuracy and practicality of the test. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of the mounting cavity of this utility model; Figure 4 This is an enlarged structural diagram of point A of this utility model.

[0015] In the diagram: 1. Base; 2. Test chamber; 3. Test cavity; 4. First clamping cylinder; 5. Adjustment seat; 6. Tactile switch; 7. Second clamping cylinder; 8. Drive sprocket; 9. Driven sprocket; 10. Test chain; 11. Drive motor; 12. Mounting cavity; 13. Door; 14. Mounting plate; 15. Hydraulic cylinder; 16. Limiting rod; 17. Telescopic protective cloth; 18. Water pump; 19. Water outlet pipe; 20. Water distribution tank; 21. Spray nozzle; 22. Support plate; 23. Slide rod; 24. Spring. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1 and Figure 2 This utility model provides a technical solution: a testing machine for measuring the force of a chain, including a base 1, a test chamber 2 fixedly connected to the top of the base 1, and a test cavity 3 provided inside the test chamber 2. A first clamping cylinder 4 is fixedly connected to the bottom of the inner wall of the test cavity 3, and a height-adjustable adjustment seat 5 is provided inside the test cavity 3. A second clamping cylinder 7 is provided at the bottom of the adjustment seat 5. The jaws of the first clamping cylinder 4 and the second clamping cylinder 7 are respectively used to clamp the two ends of the single chain to be tested. The outer sides of the grippers of the second clamping cylinder 7 and the first clamping cylinder 4 are respectively rotatably connected to the driving sprocket 8 and the driven sprocket 9, and the outer sides of the driving sprocket 8 and the driven sprocket 9 are provided with a test chain 10. The inner wall of the test chamber 3 is provided with a water distribution tank 20, and the surface of the water distribution tank 20 is provided with spray nozzles 21 that spray water toward the chain at equal intervals.

[0018] It should be noted that a force sensor is installed between the base of the first clamping cylinder 4 and the bottom of the inner wall of the test chamber 3. The device is equipped with a controller and an external display. The first clamping cylinder 4 and the second clamping cylinder 7 can clamp both ends of the single chain to be tested. By controlling the adjustment seat 5 to rise, the single chain under test is pulled to tighten until the chain breaks. During the pulling process, the change of tension can be observed on the display until the tension at the time of breakage.

[0019] Please see Figure 3The test chamber 2 has mounting cavities 12 on both sides, and the mounting cavities 12 are connected to the test chamber 3. Both ends of the adjusting seat 5 extend into the mounting cavity 12. The mounting plate 14 is fixedly connected to the mounting cavity 12. The bottom of the mounting plate 14 is fixedly installed with a hydraulic cylinder 15, and the piston rod end of the hydraulic cylinder 15 passes through the mounting plate 14 and is fixedly connected to the adjusting seat 5.

[0020] It should be noted that when using this utility model, the device is equipped with a control system. When the box door 13 is opened, the two ends of the single chain to be tested are fixed by the jaws of the first clamping cylinder 4 and the second clamping cylinder 7, respectively. By controlling the hydraulic cylinder 15 to work, its piston rod extends, driving the adjusting seat 5 and the second clamping cylinder 7 on it, as well as the single chain, to move upward. Since the positions of the first clamping cylinder 4 and the driven sprocket 9 are fixed, when the adjusting seat 5 is lifted, the single chain is tightened until it breaks. A force sensor is integrated in the device, and the force sensor is electrically connected to an external controller. The change in tension can be observed through an externally set display. Water is sprayed into the test chamber 3 by the water pump 18, as described above, to test the force change of the single chain in a wet and slippery state. When it is necessary to test the chain in operation, the test chain 10 is taken and connected to the outside of the drive sprocket 8 and the driven sprocket 9. The adjusting seat 5 is adjusted to a suitable height position by the hydraulic cylinder 15. The drive sprocket 8 is driven to rotate by the drive motor 11. Through the transmission connection between the drive sprocket 8 and the driven sprocket 9, the test chain 10 is made to run. At this time, the adjusting seat 5 is raised to make the test chain 10 taut until it breaks in operation. The force change on the external display is observed. After the test is completed, water is sprayed into the test chamber 3 to test the tension of the running test chain 10 in a wet and slippery state.

[0021] Please see Figure 2 A drive motor 11 is mounted on the outside of the gripper of the second clamping cylinder 7, and the output shaft end of the drive motor 11 is fixedly connected to the central shaft of the drive sprocket 8.

[0022] Please see Figure 1 The installation cavity 12 is located at the opening end of the test cavity 3 and is equipped with a telescopic protective cloth 17, and the adjustment seat 5 passes through the telescopic protective cloth 17.

[0023] It should be noted that the design of the telescopic protective cloth 17 can effectively isolate contaminants in the test chamber 3 and prevent debris from entering the installation chamber 12 and affecting the operation of the drive components.

[0024] Please see Figure 1 and Figure 4A tactile switch 6 is installed at one end of the top of the adjusting seat 5. Four sliding holes are equally spaced at the top center of the adjusting seat 5, and sliding rods 23 are slidably connected in each of the four sliding holes. The bottom of the four sliding rods 23 is fixedly connected to the mounting base. The second clamping cylinder 7 is fixedly installed at the bottom of the mounting base. The top of the four sliding rods 23 is connected to the support plate 22. The sliding rods 23 slide through the support plate 22. The outer side of the top of the sliding rods 23 is threaded with a nut. A spring 24 is sleeved on the outer side of the sliding rods 23 between the support plate 22 and the adjusting seat 5.

[0025] It should be noted that the adjustment seat 5 is raised and lowered by the hydraulic cylinder 15. The spring 24 is set during the raising and lowering of the adjustment seat 5 to achieve stable tension application and overload protection, avoiding damage to the equipment due to instantaneous overload, and making the operation safer.

[0026] Please see Figure 3 The test chamber 3 has a door 13 hinged to its opening end, and the surface of the door 13 is provided with an observation window.

[0027] It should be noted that the door 13 is designed to facilitate the opening and closing of the test chamber 3, thereby facilitating the installation of the test chain 10. The observation window on the door 13 facilitates the observation of the test process.

[0028] Please see Figure 1 and Figure 3 A water pump 18 is installed in the mounting cavity 12 on one side of the test chamber 2. The water inlet of the water pump 18 is connected to an external water supply tank through a connecting pipe. The water outlet of the water pump 18 is fixedly connected to a water outlet pipe 19, and the end of the water outlet pipe 19 extends into the test chamber 3 and is connected to the water distribution tank 20.

[0029] It should be noted that the water pump 18 can spray external water onto the test chain 10, which can wash away the lubricating oil on the surface of the test chain 10, simulating the situation of lubrication failure. The abrasive mixed in the water can also accelerate the wear of the test chain 10, enabling rapid life testing. At the same time, water can accelerate the rusting of the test chain 10, allowing for testing of the rust resistance of the test chain 10.

[0030] Please see Figure 3 Limiting rods 16 are symmetrically fixed between the top of the mounting plate 14 and the inner wall of the mounting cavity 12. Limiting holes are symmetrically opened at one end of the adjusting seat 5 located inside the mounting cavity 12, and the limiting rods 16 are slidably connected in the limiting holes. It should be noted that the limit rod 16 can limit the lifting and lowering of the adjusting seat 5.

[0031] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A testing machine for measuring the force of a chain, characterized in that, The test chamber includes a base (1), a test chamber (2) is fixedly connected to the top of the base (1), and a test chamber (3) is provided inside the test chamber (2). A first clamping cylinder (4) is fixedly connected to the bottom of the inner wall of the test chamber (3). A height-adjustable adjustment seat (5) is provided inside the test chamber (3), and a second clamping cylinder (7) is provided at the bottom of the adjustment seat (5). The jaws of the first clamping cylinder (4) and the second clamping cylinder (7) are used to clamp the two ends of the single chain to be tested. The outer sides of the jaws of the second clamping cylinder (7) and the first clamping cylinder (4) are rotatably connected to the drive sprocket (8) and the driven sprocket (9), respectively. A test chain (10) is provided on the outer sides of the drive sprocket (8) and the driven sprocket (9). A water distribution tank (20) is provided on the inner wall of the test chamber (3), and spray nozzles (21) that spray water toward the chain are provided at equal intervals on the surface of the water distribution tank (20).

2. The testing machine for measuring chain force according to claim 1, characterized in that: The test chamber (2) has mounting cavities (12) on both sides, and the mounting cavities (12) are connected to the test chamber (3). Both ends of the adjustment seat (5) extend into the mounting cavity (12). A mounting plate (14) is fixedly connected to the mounting cavity (12). A hydraulic cylinder (15) is fixedly installed at the bottom of the mounting plate (14), and the piston rod end of the hydraulic cylinder (15) passes through the mounting plate (14) and is fixedly connected to the adjustment seat (5).

3. The testing machine for measuring chain force according to claim 2, characterized in that: The second clamping cylinder (7) has a drive motor (11) installed on the outside of the gripper, and the output shaft end of the drive motor (11) is fixedly connected to the central shaft of the drive sprocket (8).

4. A testing machine for measuring chain force according to claim 3, characterized in that: The mounting cavity (12) is provided with a telescopic protective cloth (17) at the opening end of the test cavity (3), and the adjustment seat (5) passes through the telescopic protective cloth (17).

5. A testing machine for measuring chain force according to claim 1, characterized in that: A tactile switch (6) is installed at one end of the top of the adjustment seat (5). Four sliding holes are equally spaced at the top center of the adjustment seat (5), and sliding rods (23) are slidably connected in each of the four sliding holes. A mounting base is fixed to the bottom of the four sliding rods (23). The second clamping cylinder (7) is fixedly installed at the bottom of the mounting base. A support plate (22) is connected to the top of the four sliding rods (23). The sliding rods (23) slide through the support plate (22). A nut is threaded to the outer side of the top of the sliding rods (23). A spring (24) is sleeved on the outer side of the sliding rods (23) between the support plate (22) and the adjustment seat (5).

6. A testing machine for measuring chain force according to claim 1, characterized in that: The test chamber (3) has a door (13) hinged to its opening end, and the surface of the door (13) is provided with an observation window.

7. A testing machine for measuring chain force according to claim 1, characterized in that: A water pump (18) is installed in the mounting cavity (12) on one side of the test chamber (2). The water inlet of the water pump (18) is connected to an external water supply tank through a connecting pipe. The water outlet of the water pump (18) is fixedly connected to a water outlet pipe (19), and the end of the water outlet pipe (19) extends into the test chamber (3) and is connected to the water distribution tank (20).

8. A testing machine for measuring chain force according to claim 4, characterized in that: A limiting rod (16) is symmetrically fixed between the top of the mounting plate (14) and the inner wall of the mounting cavity (12). A limiting hole is symmetrically opened at one end of the adjusting seat (5) inside the mounting cavity (12). The limiting rod (16) is slidably connected in the limiting hole.

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