Shore durometer test board with speed measurement and timing functions

Abstract

The utility model relates to the technical field of hardness testing devices, in particular to a Shore durometer test board with speed measuring and timing functions, which comprises a base, a pressure head and a speed measuring and timing part. The device is reasonable and compact in structure and convenient to use, the timing zero point when the pressing needle starts to press down is detected through the first reflection type sensor, and the timing end point when the pressing needle stops moving can be detected through the timing hole and the second reflection type sensor; the control unit can automatically calculate the moving speed of the pressing needle according to the distance between the initial position of the pressing needle and the sample and the time when the sensor is triggered, so that the pressing needle can be pressed to the sample under the condition that the speed is close to or equal to the maximum speed of 3.2 mm / s; the control unit can also set a speed measurement timing end point as a crimping timing zero point, automatically measures the crimping time between the pressing needle and the sample, and gives out a pressing needle reset threshold value early warning; in the testing process, manual counting is not needed, the testing requirement is better met, and the measuring result is more accurate and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of hardness testing devices, in particular to a Shaw hardness tester test bench with speed measuring and timing functions. Background Art

[0002] The Shore hardness test is the preferred method for evaluating the hardness of rubber when many industries formulate standards. The measurement principle of the Shore hardness tester is that when the surface of the durometer foot is completely in contact with the surface of the sample being tested, the tip of the pressure needle has a certain extension length L relative to the plane of the foot, and the size of the L value is used to characterize the size of the Shore hardness. With its advantages of simple structure, complete specifications, flexible operation, and fast measurement, the Shore hardness tester is widely used as a measuring instrument for measuring rubber hardness in production, manufacturing, inspection agencies and other departments.

[0003] According to the requirements of 4.2.5 of the national standard GB / T 531.1: the timing mechanism automatically starts working after the pressure foot contacts the sample, indicating the end time of the test or locking the final test result. The timing mechanism is used to improve accuracy. When the bracket is used for operation, the timing tolerance should be ±0.3s. The operating speed is required as follows in 4.3.2: the bracket can press the sample against the pressure needle or the pressure needle against the sample without vibration and at a maximum speed of 3.2mm / s.

[0004] Therefore, in order to obtain accurate hardness test results, the hardness test needle should be in contact with the sample time and the operating speed should be required according to the standard requirements when conducting the test. At present, when conducting hardness tests on rubber materials, due to the lack of a timing device, the method of mental counting or manual stopwatch timing is generally used, which cannot achieve accurate tests and will result in inaccurate test results. Summary of the invention

[0005] The utility model provides a Shore hardness tester test bench with a speed measurement and timing function, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the problem that the existing Shore hardness tester has no timing device and generally adopts a mental counting or manual stopwatch timing method, which makes it impossible to perform accurate tests and causes inaccurate test results.

[0006] The technical scheme of the utility model is realized through the following measures: a Shore hardness tester test bench with a speed measuring and timing function, comprising a base, a pressure head and a speed measuring and timing part, a column is fixedly installed on the middle part of the upper side of the rear end of the base, a pressure head is fixedly installed on the outer side of the upper part of the column, a lifting part capable of moving up and down is provided at the front end of the pressure head, an indicator gauge and a pressure needle are arranged at the lower end of the lifting part from top to bottom in sequence, and a lifting switch is arranged on the right side of the front of the pressure head; a speed measuring and timing part is arranged on the upper side of the front of the base, and the speed measuring and timing part can detect the pressing speed of the pressure needle and measure the crimping time between the pressure needle and the sample.

[0007] The following are further optimizations and / or improvements to the above utility model technical solution:

[0008] The above-mentioned speed measuring and timing part may include a guide plate, a slider, a sleeve, a guide rod, a bracket, a suspension rod, a timing board, an interval speed measuring and timing unit and a control unit. A guide plate is provided on the lifting part corresponding to the position between the indicator gauge and the pressure head. The left end of the guide plate is located on the left side of the lifting part, and a guide slide groove inclined in the shape of lower left and upper right is provided on the guide plate. A slider is slidably installed in the guide slide groove, a sleeve is fixedly installed at the front end of the slider, and a guide rod is sleeved in the sleeve. Brackets are fixedly installed on the upper left side and the upper right side of the front end of the base, and the left and right ends of the guide rod are respectively fixedly installed with the corresponding brackets; a suspension rod is fixedly installed in the middle of the lower side of the sleeve, and the lower end of the suspension rod is fixedly installed with the middle of the upper side of the front end of the timing board, a timing hole for the pressure needle to pass through is provided on the timing board, and an interval speed measuring and timing unit is provided on the timing board; a control unit is fixedly installed on the upper right rear side of the base, a display module and an indication module are provided on the control unit, and the control unit is electrically connected to the interval speed measuring and timing unit.

[0009] The above-mentioned interval speed measurement timing unit may include a first reflective sensor and a second reflective sensor. A groove with an opening facing downward and a front end connected to the rear side of the timing hole is provided in the middle of the lower side of the timing plate, and the first reflective sensor is fixedly installed in the groove; a straight hole running through the front and back is provided on the column corresponding to the lower side position of the pressure needle, and the second reflective sensor is fixedly installed in the straight hole, and the second reflective sensor can just detect the initial position of the pressure needle; the first reflective sensor and the second reflective sensor are respectively connected to the control unit.

[0010] The above-mentioned suspension rod can be a telescopic rod, which includes an outer sleeve, an inner sleeve rod and a locking bolt. The surface of the inner sleeve rod is provided with an indicating scale. The upper end of the inner sleeve rod is fixedly installed together with the middle part of the lower side of the sliding sleeve. The outer sleeve is sleeved on the outer side of the inner sleeve rod, and the lower end of the outer sleeve is fixedly installed together with the middle part of the upper side of the front end of the timing plate; a forward-opening anti-rotation groove is axially provided in the middle part of the front side of the inner sleeve rod, and a locking screw hole that passes through the inner and outer ends is provided at the upper end of the outer sleeve corresponding to the position of the anti-rotation groove, and a locking bolt whose inner end abuts against the bottom of the anti-rotation groove is threaded in the locking screw hole.

[0011] Level adjustment knobs can be arranged at the four corners of the lower side of the base.

[0012] The lifting part can be a hand-cranked lifting part, and the lifting switch can be a hand-lever type operating handle.

[0013] The utility model has a reasonable and compact structure and is easy to use. The first reflective sensor detects the timing zero point when the pressing needle starts to press down, and the sliding sleeve is driven to move rightward along the guide rod by a slider that can follow the pressing needle's downward movement and synchronously climb up along the guide slide slot, so that the suspension rod drives the timing plate fixed with the second reflective sensor to move rightward synchronously. When the pressing needle just passes through the timing hole on the timing plate, the second reflective sensor can detect the timing end point when the pressing needle stops moving. The control unit can automatically calculate the moving speed of the pressing needle through the distance between the initial position of the pressing needle and the sample, and the time when the above-mentioned sensor is touched, so that the pressing needle can be pressed against the sample under the condition of being close to or equal to the maximum speed of 3.2mm / s. The control unit can also set the above-mentioned timing end point as the crimping timing zero point of the pressing needle and the sample, automatically start measuring the crimping time between the pressing needle and the sample, and synchronously display the crimping timing data on the display module. When the crimping time reaches the set threshold, the indication module warns, prompts to reset the pressing needle, and ends the test. During the test, manual counting is not required, which is more in line with the test requirements, and the measurement results are more accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attached Figure 1 It is a schematic diagram of the main structure of embodiments 1-6 of the utility model.

[0015] Attached Figure 2 For attachment Figure 1 One of the three-dimensional structure diagrams.

[0016] Attached Figure 3 For attachment Figure 1 The second schematic diagram of the three-dimensional structure.

[0017] The codes in the accompanying drawings are: 1 is a base, 2 is a pressure head, 3 is a column, 4 is a lifting part, 5 is an indicator, 6 is a pressure needle, 7 is a lifting switch, 8 is a guide plate, 9 is a slider, 10 is a sliding sleeve, 11 is a guide rod, 12 is a bracket, 13 is a timing board, 14 is a control unit, 15 is a guide slide groove, 16 is a timing hole, 17 is a display module, 18 is a first reflective sensor, 19 is a second reflective sensor, 20 is an outer sleeve, 21 is an inner sleeve rod, 22 is a locking bolt, 23 is an indicating scale, and 24 is a stop groove. DETAILED DESCRIPTION

[0018] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0019] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The positional relationships such as front, back, top, bottom, left, and right are described according to the layout directions of the drawings in the specification.

[0020] The present invention is further described below in conjunction with the embodiments and drawings:

[0021] Embodiment 1: As attached Figure 1-3 As shown, the Shore hardness tester test bench with speed measuring and timing function comprises a base 1, a pressure head 2 and a speed measuring and timing part. A column 3 is fixedly installed on the middle part of the upper side of the rear end of the base 1, and the pressure head 2 is fixedly installed on the outer side of the upper part of the column 3. A lifting part 4 that can move up and down is provided at the front end of the pressure head 2. An indicator gauge 5 and a pressure needle 6 are arranged at the lower end of the lifting part 4 from top to bottom, and a lifting switch 7 is arranged on the right side of the front of the pressure head 2; a speed measuring and timing part is provided on the upper side of the front of the base 1, and the speed measuring and timing part can detect the pressing speed of the pressure needle 6 and measure the crimping time between the pressure needle 6 and the sample.

[0022] According to the requirements, the timing function of the speed measurement and timing unit can be realized based on the piezoelectric sensor or pressure sensor arranged under the sample, and the pressure change between the sample and the pressing needle 6 can be detected to measure the crimping time of the pressing needle 6 and the sample; its speed measurement function can be realized by a linear speed sensor, or based on a proximity sensor, ultrasonic speed sensor, Hall sensor or magnetic switch fixedly installed at the bottom of the lifting part 4. The above sensors can be fixed to the base 1 through the mounting bracket to monitor the position of the pressing needle 6 in real time. In addition, in order to facilitate the rapid display of the crimping time between the pressing needle 6 and the sample and the pressing speed of the pressing needle 6, the speed measurement and timing unit can also automatically obtain the pressing speed and the crimping time between the pressing needle 6 and the sample through a single-chip microcomputer with a control function, and display the above speed and timing through a segment code screen or an LED screen.

[0023] In this embodiment, the speed measurement timing part can also be realized by connecting a laser rangefinder or an ultrasonic rangefinder through the control module. The laser rangefinder or the ultrasonic rangefinder can be installed and fixed on the base 1 through a mounting bracket, and its probe is just aligned with the pressure needle 6 or the indicator 5. The control module can obtain the moving speed of the pressure needle 6 uploaded by the laser rangefinder or the ultrasonic rangefinder in real time. When the pressure needle 6 is pressed against the sample, the moving speed of the pressure needle 6 is zero, and the control module starts to measure the crimping time between the pressure needle 6 and the sample. When the crimping time reaches the set threshold, the control module can also issue a prompt sound to remind the user to reset the pressure needle 6 and end the test.

[0024] The lifting part 4 can be realized by an electric push rod, a rotating motor gear rack lifting mechanism, a pneumatic lifting mechanism or a hydraulic lifting mechanism in the prior art. The pressure needle 6 and the indicator 5 can be an integrated structure, and any commercially available Shore hardness tester can be used, wherein the indicator 5 can be a digital display or a pointer meter.

[0025] The lifting switch 7 can be selected according to actual needs, and can be an electric switch or a hand lever switch.

[0026] During use, the operator starts the speed measuring and timing part, turns on the lifting switch 7, and the lifting part 4 presses the pressing needle 6 into the sample. The speed measuring and timing part can automatically measure the pressing speed of the pressing needle 6 so that it can be pressed against the sample under the condition of being close to or equal to the maximum speed of 3.2mm / s; when the lower end surface of the pressing needle 6 is completely in contact with the upper surface of the sample, the speed measuring and timing part can automatically start timing to ensure that the pressing time between the pressing needle 6 and the sample (vulcanized rubber) can be maintained for 3 seconds. After the timing ends, the operator controls the pressing needle 6 to reset; during the test, there is no need for manual counting, which is more in line with the test requirements and the measurement results are more accurate and reliable.

[0027] The above-mentioned Shore hardness tester test bench with speed measurement and timing function can be further optimized and / or improved according to actual needs:

[0028] Embodiment 2: As attached Figure 1-3 As shown, the speed measuring and timing part includes a guide plate 8, a slider 9, a sleeve 10, a guide rod 11, a bracket 12, a suspension rod, a timing plate 13, an interval speed measuring and timing unit and a control unit 14. The lifting part 4 corresponding to the position between the indicator 5 and the pressure head 2 is provided with a guide plate 8, the left end of the guide plate 8 is located on the left side of the lifting part 4, and the guide plate 8 is provided with a guide slide 15 inclined in the shape of lower left and upper right. The slider 9 is slidably installed in the guide slide 15, and the front end of the slider 9 is fixedly installed with a sleeve 10, and the guide rod 11 is installed in the sleeve 10. The upper left side of the front end of the base 1 and the front A bracket 12 is fixedly installed on the upper right side of the end, and the left and right ends of the guide rod 11 are fixedly installed with the corresponding bracket 12 respectively; a suspension rod is fixedly installed on the middle part of the lower side of the sliding sleeve 10, and the lower end of the suspension rod is fixedly installed with the middle part of the upper side of the front end of the timing plate 13, and the timing plate 13 is provided with a timing hole 16 for the pressure needle 6 to pass through, and the timing plate 13 is provided with an interval speed measurement timing unit; a control unit 14 is fixedly installed on the upper right rear side of the base 1, and the control unit 14 is provided with a display module 17 and an indication module, and the control unit 14 is electrically connected to the interval speed measurement timing unit.

[0029] At the beginning of the test, the slider 9 is in the initial position, that is, the slider 9 is in the minimum stroke of the guide slot 15 (the lower left end); the pressing pin 6 is pressed downward to drive the guide plate 8 to move downward, driving the slider 9 sleeved in the guide slot 15 to gradually climb upward along the guide slot 15. During the upward climbing process of the slider 9, it can drive the sliding sleeve 10 to slide to the right along the guide rod 11. When the slider 9 slides to the maximum stroke of the guide slot 15 (that is, the upper right end), the pressing pin 6 just vertically passes through the timing hole 16 and presses on the sample. After maintaining the preset time, the indication module warns, resets the pressing pin 6, and the operator ends the test.

[0030] During the test, when the pressing needle 6 is pressed down, the interval speed measurement timing unit will be triggered for the first time, and the control unit 14 will record the time point when the pressing needle 6 starts to move (i.e., the speed measurement timing zero point); when the pressing needle 6 passes through the timing hole 16, the interval speed measurement timing unit will be triggered again, and the control unit 14 will record the time point when the pressing needle 6 ends to move (i.e., the speed measurement timing end point), and automatically calculate the movement time of the pressing needle 6. Since the length of the suspension rod and the thickness of the timing plate 13 are fixed, the control unit 14 can automatically calculate the movement speed of the pressing needle 6 according to the displacement and movement time of the pressing needle, and display it on the display module 17; the control unit 14 can also set the speed measurement timing end point as the crimping timing zero point between the pressing needle 6 and the sample, automatically start measuring the crimping time between the pressing needle 6 and the sample, and synchronously display the crimping timing data on the display module 17; when the crimping time reaches the set threshold, the indication module will issue an alarm to prompt the resetting of the pressing needle 6.

[0031] During the test, the timing hole 16 can ensure that the pressing needle 6 is pressed vertically on the sample to avoid the pressing needle 6 from being tilted and affecting the test accuracy; the interval speed measurement timing unit and the control unit work together to accurately and reliably obtain the pressing speed of the pressing needle 6 and the crimping time with the sample, thereby making the measurement results more accurate and reliable.

[0032] According to the requirements, the control unit 14 is implemented based on a single-chip microcomputer or PLC in the prior art, the display module 17 can be a display screen, the indication module can be a plurality of monochrome LED lamps, or a multi-color LED lamp, or an alarm, a buzzer or a vibrator. The interval speed measurement timing unit can be implemented by installing a light sensing switch in the timing hole 16 or in the groove on the lower side of the timing board 13, in conjunction with an infrared tube or an ultrasonic detector or a beam-type photoelectric sensor fixedly installed on the bracket 12. When the pressure needle 6 is pressed down, the infrared tube (or ultrasonic detector or beam-type photoelectric sensor) will be triggered first. When the timing board 13 moves to the top of the sample and the pressure needle 6 passes through the timing hole 16, the sample and the pressure needle 6 block the light, and the light sensing switch will be triggered, thereby realizing the interval speed measurement timing function. In this embodiment, the interval speed measurement timing unit and the control unit 14 can also be implemented by the Arduino interval timer interval speed measurement kit in the prior art.

[0033] Embodiment 3: As attached Figure 1-3 As shown, the interval speed measurement timing unit includes a first reflection sensor 18 and a second reflection sensor 19. A groove with an opening facing downward and a front end connected to the rear side of the timing hole 16 is provided in the middle of the lower side of the timing plate 13, and the first reflection sensor 18 is fixedly installed in the groove; a straight hole running through the front and back is provided on the column 3 corresponding to the lower side position of the pressure needle 6, and a second reflection sensor 19 is fixedly installed in the straight hole, and the second reflection sensor 19 can just detect the initial position of the pressure needle 6; the first reflection sensor 18 and the second reflection sensor 19 are respectively connected to the control unit 14.

[0034] In this embodiment, both the first reflective sensor 18 and the second reflective sensor 19 can be reflective photoelectric sensors. Reflective photoelectric sensors are easier to install and have higher sensitivity. They are more suitable for detecting opaque objects and are not limited by distance.

[0035] Embodiment 4: As attached Figure 1-3 As shown, the suspension rod is a telescopic rod, which includes an outer sleeve 20, an inner sleeve rod 21 and a locking bolt 22. The surface of the inner sleeve rod 21 is provided with an indicating scale 23. The upper end of the inner sleeve rod 21 is fixedly installed together with the middle part of the lower side of the sliding sleeve 10. The outer sleeve 20 is sleeved on the outer side of the inner sleeve rod 21, and the lower end of the outer sleeve 20 is fixedly installed together with the middle part of the upper side of the front end of the timing plate 13; the middle part of the front side of the inner sleeve rod 21 is axially provided with a forward-opening anti-rotation groove 24, and the upper end of the outer sleeve 20 corresponding to the position of the anti-rotation groove 24 is provided with a locking screw hole that passes through the inside and outside, and the locking screw hole is threaded with a locking bolt 22 whose inner end is abutted against the bottom of the anti-rotation groove 24.

[0036] By such arrangement, the telescopic rod is more convenient to adjust the position of the timing plate 13 according to the thickness of the sample; the anti-rotation groove 24 and the locking screw can prevent the timing plate 13 from rotating, thereby avoiding the misalignment of the timing hole 16 and the pressing needle 6; the indicating scale 23 can more quickly determine the relative distance between the first sensor and the second sensor, and is more convenient to change the moving distance of the pressing needle 6 on the control unit 14, thereby more accurately determining the moving speed of the pressing needle 6. In this embodiment, the display module 17 on the control unit 14 can be a touch screen.

[0037] Embodiment 5: Horizontal adjustment knobs are provided at the four corners of the lower side of the base 1.

[0038] During use, the horizontal adjustment knob can adjust the horizontal state of the base 1 to keep the device horizontal so that the pressure needle 6 can vertically press the sample to improve the test accuracy.

[0039] Embodiment 6: As attached Figure 1-3 As shown, the lifting part 4 is a hand-cranked lifting part 4, and the lifting switch 7 is a hand-lever type operating handle.

[0040] By such arrangement, the hand-cranked lifting part 4 has a compact structure, good stability, low cost and is easy to implement; the hand-lever type operating handle has a large target and is not prone to misoperation.

[0041] According to needs, the hand-operated lifting part 4 can be implemented based on the gear rack lifting mechanism in the prior art, or it can use the same structure as the lifting mechanism in the hand-operated bench drill in the prior art; a spring reset mechanism that can automatically reset the hand-lever operating handle can also be provided on the pressure head 2 corresponding to the left end position of the hand-operated lifting part 4.

[0042] During use, the hand-lever operating handle is pressed downward, and the hand-lever operating handle can drive the transmission gear on the transmission hand-cranked lifting part 4 to rotate, thereby driving the indicator 5 and the pressing needle 6 to move downward through the rack, so that the pressing needle 6 can squeeze the sample downward. At this time, hold the hand-lever operating handle still to keep the pressing needle 6 and the sample in a predetermined crimping time. When the indicator module indicates that the test is over, release the hand-lever operating handle to complete the test.

[0043] The above technical features constitute the embodiments of the present utility model, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. A Shore hardness tester test bench with speed measurement and timing function, characterized in that: It includes a base, a pressure head and a speed measuring and timing part. A column is fixedly installed on the middle part of the upper side of the rear end of the base, and the pressure head is fixedly installed on the outer side of the upper part of the column. A lifting part that can move up and down is provided at the front end of the pressure head. An indicator gauge and a pressure needle are arranged at the lower end of the lifting part from top to bottom, and a lifting switch is arranged on the right side of the front of the pressure head. A speed measuring and timing part is provided on the upper side of the front of the base, which can detect the pressing speed of the pressure needle and measure the crimping time between the pressure needle and the sample.

2. The Shore hardness tester with speed measurement and timing function according to claim 1, characterized in that: The speed measuring and timing part includes a guide plate, a slider, a sleeve, a guide rod, a bracket, a suspension rod, a timing board, an interval speed measuring and timing unit and a control unit. A guide plate is provided on the lifting part corresponding to the position between the indicator and the pressure head. The left end of the guide plate is located on the left side of the lifting part, and a guide slide groove inclined in the shape of lower left and upper right is provided on the guide plate. A slider is slidably installed in the guide slide groove, a sleeve is fixedly installed at the front end of the slider, and a guide rod is sleeved in the sleeve. Brackets are fixedly installed on the upper left side and the upper right side of the front end of the base, and the left and right ends of the guide rod are respectively fixedly installed with the corresponding brackets; a suspension rod is fixedly installed in the middle of the lower side of the sleeve, and the lower end of the suspension rod is fixedly installed with the middle of the upper side of the front end of the timing board, a timing hole for the pressure needle to pass through is provided on the timing board, and an interval speed measuring and timing unit is provided on the timing board; a control unit is fixedly installed on the upper right rear side of the base, a display module and an indication module are provided on the control unit, and the control unit is electrically connected to the interval speed measuring and timing unit.

3. The Shore hardness tester with speed measurement and timing function according to claim 2, characterized in that: The interval speed measurement timing unit includes a first reflective sensor and a second reflective sensor. A groove with an opening facing downward and a front end connected to the rear side of the timing hole is provided in the middle of the lower side of the timing plate, and the first reflective sensor is fixedly installed in the groove; a straight hole running through the front and back is provided on the column corresponding to the lower side position of the pressure needle, and the second reflective sensor is fixedly installed in the straight hole, and the second reflective sensor can just detect the initial position of the pressure needle; the first reflective sensor and the second reflective sensor are respectively connected to the control unit.

4. The Shore hardness tester with speed measurement and timing function according to claim 2 or 3, characterized in that: The suspension rod is a telescopic rod, which includes an outer sleeve, an inner sleeve rod and a locking bolt. The surface of the inner sleeve rod is provided with an indicating scale. The upper end of the inner sleeve rod is fixedly mounted together with the middle part of the lower side of the sliding sleeve. The outer sleeve is sleeved on the outer side of the inner sleeve rod, and the lower end of the outer sleeve is fixedly mounted together with the middle part of the upper side of the front end of the timing plate. A forward-opening anti-rotation groove is axially provided in the middle part of the front side of the inner sleeve rod, and a locking screw hole that passes through the inner and outer ends is provided at the upper end of the outer sleeve corresponding to the position of the anti-rotation groove. A locking bolt whose inner end abuts against the bottom of the anti-rotation groove is threaded into the locking screw hole.

5. The Shore hardness tester with speed measurement and timing function according to claim 1, 2 or 3, characterized in that: There are level adjustment knobs at the four corners of the lower side of the base.

6. The Shore hardness tester with speed measurement and timing function according to claim 4, characterized in that: There are level adjustment knobs at the four corners of the lower side of the base.

7. The Shore hardness tester with speed measurement and timing function according to claim 1, 2, 3 or 6, characterized in that: The lifting part is a hand-cranked lifting part, and the lifting switch is a hand-lever type operating handle.

8. The Shore hardness tester with speed measurement and timing function according to claim 4, characterized in that: The lifting part is a hand-cranked lifting part, and the lifting switch is a hand-lever type operating handle.

9. The Shore hardness tester with speed measurement and timing function according to claim 5, characterized in that: The lifting part is a hand-cranked lifting part, and the lifting switch is a hand-lever type operating handle.

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