Weight hardness testing device

Abstract

The utility model relates to the technical field of hardness testing, and discloses a weight hardness testing device which comprises a testing table, a stand column is fixedly installed on the top of the testing table, and a pressing head is arranged on the front side of the stand column. Through operation of the motor, when the first gear rotates forwards, the pressing head presses downwards to carry out hardness testing, when the first gear rotates backwards, the brake block and the ratchet wheel are meshed with each other, the ratchet wheel rotates at the moment, and further through transmission of the synchronous belt, a weight sample on the top of the roller shaft is conveyed in a short distance. According to the device, the pressing head can be pressed downwards to carry out testing by controlling the operation of the motor, the roller shaft drives the weight sample to move while the pressing head is reset, the detected position is changed at the moment, hardness testing can be carried out on different positions for multiple times, the testing accuracy is guaranteed, meanwhile, the workload is relieved, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hardness testing, and more specifically, to a hardness testing device for a weight. Background Art

[0002] A weight is a standard object used to measure mass or weight, usually with a known, precise mass value. In the fields of physics and engineering, weights are widely used in balances, scales, and other measuring devices to ensure the accuracy of measurements.

[0003] Since the hardness of a weight directly affects its mass and shape stability, if the weight is too soft, it may deform during use, resulting in inaccurate measurements, and after frequent or prolonged use, the surface of the weight may wear due to contact with other objects. If the hardness of the weight is insufficient, this wear may be more obvious, resulting in mass loss and measurement errors, so a weight hardness testing device is needed.

[0004] Current weight hardness testing devices usually evaluate the hardness of a material by applying a certain amount of pressure on the weight surface and then observing or measuring the indentations, scratches or deformations produced on the weight surface. Currently, when testing weights, the hardness characteristics of the material may vary due to factors such as location, organizational structure, and preparation process. Therefore, a single measurement may not be able to fully reflect the hardness characteristics of the material and multiple tests are required. This will result in the need to frequently determine the current test position of the weight when testing the weight, and adjust its position after the test is completed to avoid repeated measurements of the weight sample by the indenter. However, frequent adjustments to the weight position will increase the workload and make hardness testing time-consuming and labor-intensive, so it needs to be improved and optimized. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a hardness testing device for a weight, which has the advantages of multiple tests and saving time and effort.

[0006] To achieve the above object, the utility model provides the following technical solution: a weight hardness testing device, comprising a test bench, a column is fixedly installed on the top of the test bench, a pressure head is arranged on the front side of the column, and the pressure head and the test bench are connected to each other through a connecting line;

[0007] A motor is fixedly installed inside the test bench, and the output shaft of the motor is fixedly connected to gear one, and the gear one is rotatably installed on the internal rear side of the test bench, and a gear two is rotatably installed on the internal front side of the test bench, and the gear one and gear two are connected by a transmission belt. A ratchet is provided inside the gear two, and the ratchet is rotatably installed on the internal front side of the test bench, and a brake block is rotatably installed inside the gear two, and the brake block and the inner wall of the gear two are elastically connected by a spring one, and the brake block contacts each other with the ratchet through the spring one, and a transmission rod two is fixedly installed on the top of the ratchet, and a movable groove is fixedly opened on the top of the test bench, and a roller is rotatably installed inside the movable groove, and a fixed groove is fixedly provided on the internal front side of the test bench, and the fixed groove is located in front of the movable groove.

[0008] As an optimal technical solution of the utility model, a pressure plate 1 is fixedly installed on the top rear side of the test bench, and a pressure plate 2 is fixedly installed on the top front side of the test bench. The pressure plates 1 and 2 are located on the front and rear sides of the top of the movable groove.

[0009] As a preferred technical solution of the utility model, the top of the transmission rod 2 passes through the inside of the fixed groove and is fixedly connected to the transmission wheel 2. The transmission wheel 2 is rotatably installed on the bottom of the inner wall of the fixed groove. The rear side of the inner wall of the fixed groove is rotatably installed with the transmission wheel 1. The transmission wheel 1 is transmission-connected to the transmission wheel 2.

[0010] As a preferred technical solution of the utility model, there are seven groups of roller shafts, and the front sections of the seven groups of roller shafts are fixedly installed with transmission shafts, and the transmission shafts are rotatably installed on the inner wall of the movable groove. The seven groups of transmission shafts are connected by synchronous belt transmission, and the front end of the transmission shaft located in the middle of the movable groove is fixedly connected to a transmission wheel.

[0011] As a preferred technical solution of the utility model, a screw is rotatably installed inside the column, the screw and the moving block are threadedly connected, the moving block and the pressure head are fixedly connected, the bottom of the screw is fixedly connected to a transmission rod, the transmission rod passes through the interior of the test bench and is fixedly connected to a gear.

[0012] As an optimal technical solution of the utility model, a fixed cylinder is fixedly installed at the front end of the second pressure plate, a guide plate is movably installed on the fixed cylinder, a second spring is elastically installed inside the fixed cylinder, and the guide plate and the inner wall of the fixed cylinder are elastically connected by the second spring.

[0013] As a preferred technical solution of the utility model, a fixed pressure block is fixedly installed inside the gear 2, and the fixed pressure block is located on the side of the brake block.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The utility model enables the gear 1 to rotate forward and reverse through the operation of the motor. When the gear 1 rotates forward, the pressure head is pressed down to perform hardness testing. When the gear 1 reverses, the brake block and the ratchet are engaged with each other, and the ratchet rotates at this time. The weight sample on the top of the roller is further transported over a short distance through the transmission of the synchronous belt. Compared with the traditional device, the device can control the operation of the motor to press the pressure head down for testing, and when the pressure head is reset, the roller drives the weight sample to move. At this time, the detection position changes, and multiple hardness tests can be performed on different positions, which ensures the accuracy of the test while reducing the workload and improving the detection efficiency.

[0016] 2. The utility model uses the elastic potential energy of spring 2 to move the guide plate toward pressure plate 1, and cooperates with pressure plate 1 to clamp both sides of the weight sample. Compared with the traditional device, the device restricts both sides of the weight sample through the guide plate and the pressure plate pair, so that the weight sample will not deviate when moving, effectively saving the fixing time and improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the column of the utility model;

[0020] Figure 4 This is a schematic diagram of the roller structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the second gear of the utility model;

[0022] Figure 6 This is a schematic diagram of the internal structure of the second gear of the utility model;

[0023] Figure 7 This is a schematic diagram of the guide plate structure of the utility model.

[0024] In the figure: 1. test bench; 2. column; 3. pressure head; 4. connecting line; 5. motor; 6. transmission rod 1; 7. gear 1; 8. gear 2; 9. transmission belt; 10. ratchet; 11. fixed pressure block; 12. brake block; 13. spring 1; 14. fixed groove; 15. transmission rod 2; 16. transmission wheel 1; 17. transmission wheel 2; 18. transmission shaft; 19. moving groove; 20. roller; 21. synchronous belt; 22. screw; 23. moving block; 24. pressure plate 1; 25. pressure plate 2; 26. guide plate; 27. fixed cylinder; 28. spring 2. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figures 1 to 7 As shown, the utility model provides a weight hardness testing device, comprising a test bench 1, a column 2 is fixedly installed on the top of the test bench 1, a pressure head 3 is arranged on the front side of the column 2, and the pressure head 3 and the test bench 1 are connected to each other through a connecting line 4;

[0027] A motor 5 is fixedly installed inside the test bench 1, and the output shaft of the motor 5 is fixedly connected to a gear 7, which is rotatably installed on the inner rear side of the test bench 1. A gear 28 is rotatably installed on the inner front side of the test bench 1. Gear 17 and gear 28 are connected through a transmission belt 9. A ratchet 10 is provided inside the gear 28, and the ratchet 10 is rotatably installed on the inner front side of the test bench 1. A brake block 12 is rotatably installed inside the gear 28, and the brake block 12 and the inner wall of the gear 28 are elastically connected through a spring 13. The brake block 12 contacts the ratchet 10 through the spring 13, and a transmission rod 2 15 is fixedly installed on the top of the ratchet 10. A movable groove 19 is fixedly opened on the top of the test bench 1, and a roller 20 is rotatably installed inside the movable groove 19. A fixed groove 14 is fixedly provided on the inner front side of the test bench 1, and the fixed groove 14 is located in front of the movable groove 19.

[0028] When the hardness test of the weight is needed, the staff first selects the weight sample and then pulls the guide plate 26. At this time, the spring 28 is squeezed, and the staff can place the weight sample at the bottom of the pressure head 3 and ensure that it is located on the top of the roller 20. Then the staff loosens the guide plate 26. Through the elastic potential energy of the spring 28, the guide plate 26 moves toward the pressure plate 24 and cooperates with the pressure plate 24 to clamp the two sides of the weight sample to prevent the weight sample from shifting. Then the staff starts the motor 5. The operation of the motor 5 drives the gear 7 to rotate. The rotation of the gear 7 rotates the transmission rod 6, and the rotation of the transmission rod 6 drives the screw 22 to rotate, further causing the moving block 23 to move downward inside the column 2, and the pressure head 3 is pressed down to the surface of the weight sample to complete the first test. At the same time, the rotation of the gear 7 also drives the gear 2 8 to rotate through the transmission belt 9. The rotation of the gear 2 8 drives the brake block 12 to move, but due to the ratchet 1 0, when the brake block 12 moves, the spring 13 will be squeezed, and the brake block 12 cannot drive the brake block 12 to rotate. After the first test is completed, the staff drives the motor 5 to reverse the motor 5. The reversal of the motor 5 lifts the pressure head 3, and the gear 2 8 starts to rotate in the opposite direction. The reversal of the gear 2 8 drives the brake block 12 to move in a circle. At this time, the brake block 12 will mesh with the ratchet 10 to rotate the ratchet 10. The ratchet 10 drives the transmission wheel 2 17 to rotate through the transmission rod 2 15. At this time, the transmission wheel 16 rotates, driving the transmission shaft 18 to rotate. The rotation of the transmission shaft 18 is driven by the synchronous belt 21 to rotate the roller 20, and the weight sample on the top of the roller 20 is transported a short distance, further changing the detection position, and through the guide plate 26 and the pressure plate 1 24, the weight sample will not deviate when moving. At this time, the staff can control the operation of the motor 5 to perform multiple tests on the weight sample.

[0029] Through the operation of the motor 5, the gear 7 is rotated forward and reverse. When the gear 7 rotates forward, the pressure head 3 is pressed down to perform a hardness test. When the gear 7 reverses, the brake block 12 and the ratchet 10 engage with each other, and the ratchet 10 rotates at this time. The synchronous belt 21 is further driven to transport the weight sample on the top of the roller 20 for a short distance. Compared with the traditional device, the device can control the operation of the motor 5 to press the pressure head 3 down for testing, and when the pressure head 3 is reset, the roller 20 drives the weight sample to move. At this time, the detection position changes, and multiple hardness tests can be performed on different positions, which ensures the accuracy of the test while reducing the workload and improving the detection efficiency.

[0030] Among them, a pressure plate 1 24 is fixedly installed on the top rear side of the test bench 1 , and a pressure plate 2 25 is fixedly installed on the top front side of the test bench 1 . The pressure plates 1 24 and 25 are located at the front and rear sides of the top of the movable groove 19 .

[0031] The staff first selects the weight sample and then pulls the guide plate 26. At this time, the spring 28 is squeezed, and the staff can place the weight sample at the bottom of the pressure head 3 and ensure that it is located on the top of the roller 20. Then the staff releases the guide plate 26. Through the elastic potential energy of the spring 28, the guide plate 26 moves toward the pressure plate 24 and cooperates with the pressure plate 24 to clamp the two sides of the weight sample to prevent the weight sample from shifting.

[0032] Through the elastic potential energy of spring 28, the guide plate 26 is displaced toward the pressure plate 24, and cooperates with the pressure plate 24 to clamp the two sides of the weight sample. Compared with the traditional device, the device limits the two sides of the weight sample through the guide plate 26 and the pressure plate 24, so that the weight sample will not deviate when moving, effectively saving the fixing time and improving the test efficiency.

[0033] Among them, the top of the transmission rod 2 15 passes through the inside of the fixed groove 14 and is fixedly connected to the transmission wheel 2 17. The transmission wheel 2 17 is rotatably installed on the bottom of the inner wall of the fixed groove 14. The rear side of the inner wall of the fixed groove 14 is rotatably installed with a transmission wheel 16. The transmission wheel 16 and the transmission wheel 2 17 are transmission connected.

[0034] The ratchet 10 drives the second transmission wheel 17 to rotate through the second transmission rod 15. At this time, the first transmission wheel 16 rotates, driving the transmission shaft 18 to rotate. The rotation of the transmission shaft 18 is driven by the synchronous belt 21 to rotate the roller shaft 20.

[0035] Among them, there are seven groups of rollers 20, and the front sections of the seven groups of rollers 20 are fixedly installed with transmission shafts 18, and the transmission shafts 18 are rotatably installed on the inner wall of the movable groove 19. The seven groups of transmission shafts 18 are connected through synchronous belts 21, and the front end of the transmission shaft 18 located in the middle of the movable groove 19 is fixedly connected to the transmission wheel 16.

[0036] When the transmission wheel 16 rotates, the transmission shaft 18 rotates, and the rotation of the transmission shaft 18 is driven by the synchronous belt 21 to rotate the roller 20, so that the weight sample on the top of the roller 20 is transported a short distance, and the detection position is further changed.

[0037] Among them, a screw rod 22 is rotatably installed inside the column 2, the screw rod 22 and the moving block 23 are threadedly connected, the moving block 23 and the pressure head 3 are fixedly connected, the bottom of the screw rod 22 is fixedly connected to the transmission rod 6, the transmission rod 6 penetrates into the interior of the test bench 1, and is fixedly connected to the gear 7.

[0038] The staff starts the motor 5, and the operation of the motor 5 drives the gear 7 to rotate. The rotation of the gear 7 causes the transmission rod 6 to rotate, and the rotation of the transmission rod 6 drives the screw 22 to rotate, further causing the moving block 23 to move downward inside the column 2, and the pressure head 3 is pressed down to the surface of the weight sample, completing the first test.

[0039] Among them, a fixed cylinder 27 is fixedly installed at the front end of the second pressure plate 25, a guide plate 26 is movably installed on the fixed cylinder 27, a second spring 28 is elastically installed inside the fixed cylinder 27, and the guide plate 26 and the inner wall of the fixed cylinder 27 are elastically connected by the second spring 28.

[0040] A fixed pressure block 11 is fixedly installed inside the gear 2 8 , and the fixed pressure block 11 is located on the side of the brake block 12 .

[0041] The provision of the fixed pressure block 11 ensures the meshing relationship between the brake block 12 and the ratchet 10 .

[0042] The working principle and use process of this utility model:

[0043] When the hardness test of the weight is needed, the staff first selects the weight sample and then pulls the guide plate 26. At this time, the spring 28 is squeezed, and the staff can place the weight sample at the bottom of the pressure head 3 and ensure that it is located on the top of the roller 20. Then the staff loosens the guide plate 26. Through the elastic potential energy of the spring 28, the guide plate 26 moves toward the pressure plate 24 and cooperates with the pressure plate 24 to clamp the two sides of the weight sample to prevent the weight sample from shifting. Then the staff starts the motor 5. The operation of the motor 5 drives the gear 7 to rotate. The rotation of the gear 7 rotates the transmission rod 6, and the rotation of the transmission rod 6 drives the screw 22 to rotate, further causing the moving block 23 to move downward inside the column 2, and the pressure head 3 is pressed down to the surface of the weight sample to complete the first test. At the same time, the rotation of the gear 7 also drives the gear 2 8 to rotate through the transmission belt 9. The rotation of the gear 2 8 drives the brake block 12 to move, but due to the ratchet 1 0, when the brake block 12 moves, the spring 13 will be squeezed, and the brake block 12 cannot drive the brake block 12 to rotate. After the first test is completed, the staff drives the motor 5 to reverse the motor 5. The reversal of the motor 5 lifts the pressure head 3, and the gear 2 8 starts to rotate in the opposite direction. The reversal of the gear 2 8 drives the brake block 12 to move in a circle. At this time, the brake block 12 will mesh with the ratchet 10 to rotate the ratchet 10. The ratchet 10 drives the transmission wheel 2 17 to rotate through the transmission rod 2 15. At this time, the transmission wheel 16 rotates, driving the transmission shaft 18 to rotate. The rotation of the transmission shaft 18 is driven by the synchronous belt 21 to rotate the roller 20, and the weight sample on the top of the roller 20 is transported a short distance, further changing the detection position, and through the guide plate 26 and the pressure plate 1 24, the weight sample will not deviate when moving. At this time, the staff can control the operation of the motor 5 to perform multiple tests on the weight sample.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A weight hardness testing device, comprising a test bench (1), characterized in that: A column (2) is fixedly mounted on the top of the test bench (1); a pressure head (3) is arranged on the front side of the column (2); and the pressure head (3) and the test bench (1) are connected to each other via a connecting line (4); A motor (5) is fixedly installed inside the test bench (1); the output shaft of the motor (5) is fixedly connected to a gear 1 (7); the gear 1 (7) is rotatably installed on the rear side of the test bench (1); a gear 2 (8) is rotatably installed on the front side of the test bench (1); the gear 1 (7) and the gear 2 (8) are connected by a transmission belt (9); a ratchet (10) is arranged inside the gear 2 (8); the ratchet (10) is rotatably installed on the front side of the test bench (1); a brake block is rotatably installed inside the gear 2 (8). (12), the brake block (12) and the inner wall of the second gear (8) are elastically connected via a spring one (13), the brake block (12) and the ratchet (10) are in contact with each other via the spring one (13), a transmission rod two (15) is fixedly installed on the top of the ratchet (10), a movable groove (19) is fixedly opened on the top of the test bench (1), a roller (20) is rotatably installed inside the movable groove (19), and a fixed groove (14) is fixedly arranged on the front side of the interior of the test bench (1), and the fixed groove (14) is located in front of the movable groove (19).

2. A weight hardness testing device according to claim 1, characterized in that: A first pressing plate (24) is fixedly mounted on the rear side of the top of the test bench (1), and a second pressing plate (25) is fixedly mounted on the front side of the top of the test bench (1). The first pressing plate (24) and the second pressing plate (25) are located at the front and rear sides of the top of the movable groove (19).

3. A weight hardness testing device according to claim 1, characterized in that: The top of the second transmission rod (15) passes through the interior of the fixed groove (14) and is fixedly connected to the second transmission wheel (17). The second transmission wheel (17) is rotatably mounted on the bottom of the inner wall of the fixed groove (14). The rear side of the inner wall of the fixed groove (14) is rotatably mounted with the first transmission wheel (16). The first transmission wheel (16) and the second transmission wheel (17) are transmission-connected.

4. The hardness testing device of a weight according to claim 1, characterized in that: There are seven groups of roller shafts (20) in total. A transmission shaft (18) is fixedly mounted on the front section of the seven groups of roller shafts (20). The transmission shaft (18) is rotatably mounted on the inner wall of the movable groove (19). The seven groups of transmission shafts (18) are connected by a synchronous belt (21), and the front end of the transmission shaft (18) located in the middle of the movable groove (19) is fixedly connected to the transmission wheel 1 (16).

5. The hardness testing device of a weight according to claim 1, characterized in that: A screw rod (22) is rotatably mounted inside the column (2); the screw rod (22) and the moving block (23) are threadedly sleeved; the moving block (23) and the pressure head (3) are fixedly connected; the bottom of the screw rod (22) is fixedly connected to a transmission rod 1 (6); the transmission rod 1 (6) penetrates into the interior of the test bench (1) and is fixedly connected to a gear 1 (7).

6. A weight hardness testing device according to claim 2, characterized in that: A fixing cylinder (27) is fixedly mounted on the front end of the second pressing plate (25), a guide plate (26) is movably mounted on the fixing cylinder (27), a second spring (28) is elastically mounted inside the fixing cylinder (27), and the guide plate (26) and the inner wall of the fixing cylinder (27) are elastically connected via the second spring (28).

7. A weight hardness testing device according to claim 1, characterized in that: A fixed pressure block (11) is fixedly installed inside the second gear (8), and the fixed pressure block (11) is located on the side of the brake block (12).

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