Clamping device of test instrument

By designing a clamping device for testing instruments, the problem of difficulty in maintaining a stable distance between the measuring instrument and the sample is solved, and the stable clamping and precise position adjustment of the instrument are achieved, which improves working efficiency and measurement accuracy.

CN222289926UActive Publication Date: 2025-01-03FIFTH ELECTRONICS RSCH INST OF MINISTRY OF IND & INFO TECH
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Patent Information

Application Number
CN202421089610.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-17
Publication Date
2025-01-03
Estimated Expiration
2034-05-17

AI Technical Summary

Technical Problem

In noise measurement, solar irradiance measurement, headlight fog test and water spray test, the distance between the measuring instrument and the sample is difficult to maintain stable, resulting in inconvenient operation and affecting work efficiency.

Method used

A clamping device for testing instruments is designed, including a base, height adjustment assembly, support seat, clamping assembly, ranging assembly and control display assembly, to fix the test instruments through the clamping assembly, and to utilize the distance measurement assembly and height adjustment assembly Achieve accurate adjustment of the position of the test instrument.

Benefits of technology

It realizes stable clamping and convenient position adjustment of the test instrument, reduces operation difficulty, improves work efficiency, and ensures the accuracy of measurement results.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a clamping device of a test instrument, relates to the technical field of instrument clamps, and can conveniently adjust the position of the test instrument relative to a sample and reduce the test operation difficulty. The supporting seat is provided with a groove capable of accommodating a test instrument, the opening of the groove is opened towards one side of the supporting seat in the first direction, and two side walls of the groove in the second direction are provided with connecting through holes; the height adjusting assembly is arranged on the base and can adjust the height position of the supporting seat; the two clamping assemblies comprise clamping blocks, threaded rods and nuts, the two clamping blocks are arranged in the groove and limit the clamping space, the threaded rods are connected with the connecting through holes in a matched mode and connected with the clamping blocks, the nuts are arranged in the groove, and the nuts are connected with the threaded rods and can abut against the side wall of the groove; the distance measuring assembly is arranged on the supporting base and located below the groove, and the distance measuring direction of the distance measuring assembly is consistent with the opening direction of the groove. The control display assembly is arranged on the supporting base and electrically connected with the distance measuring assembly and the height adjusting assembly, and the first direction, the second direction and the vertical direction are perpendicular pairwise.
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Description

Technical Field

[0001] The utility model belongs to the technical field of instrument fixtures, and particularly relates to a clamping device for a testing instrument. Background Art

[0002] In noise measurement, solar irradiance measurement and other work, a fixed distance requirement is usually required between the measuring instrument and the sample; in addition, in the fogging test of car lights, it is necessary to observe the fogging situation at a fixed distance and take pictures; in addition, in some water spray tests, there are also certain distance requirements between the nozzle and the sample.

[0003] In the above work, the traditional method is usually used. Specifically, the test personnel use a ruler to measure the distance between the measuring instrument and the sample, and then measure the sample by manually holding the measuring instrument. However, this method is difficult to maintain stability at a fixed distance, which affects the measurement results. At the same time, when changing the angle, the distance between the measuring instrument and the sample needs to be measured again, which will cause inconvenience in operation and affect work efficiency. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a clamping device for a test instrument, which can stably clamp and fix the test instrument, and conveniently and quickly adjust the position of the test instrument relative to the sample, thereby reducing the difficulty of the test operation and improving the work efficiency.

[0005] The clamping device of the testing instrument according to the embodiment of the utility model comprises:

[0006] Base;

[0007] A height adjustment component is arranged on the base;

[0008] A support base, provided with a groove for accommodating a test instrument, wherein an opening of the groove is open toward one side of the support base in a first direction, and two side walls of the groove in a second direction are provided with connecting through holes, and the height adjustment assembly is configured to be able to adjust the height position of the support base;

[0009] A clamping assembly, two of which are provided, the clamping assembly comprising a clamping block, a threaded rod and a nut, the clamping block being arranged in the groove, the threaded rod being adapted and connected to the connecting through hole and connected to the clamping block, the nut being arranged in the groove, the nut being connected to the threaded rod and being able to abut against the side wall of the groove, and the two clamping blocks jointly defining the clamping space of the test instrument;

[0010] A distance measuring component is arranged on the support seat and is located below the groove, and the distance measuring direction of the distance measuring component is consistent with the opening direction of the groove;

[0011] The control display component is arranged on the support seat and is electrically connected to the distance measuring component and the height adjusting component respectively. The first direction, the second direction and the up-down direction are perpendicular to each other.

[0012] The clamping device for the test instrument according to the embodiment of the utility model has at least the following beneficial effects: the test instrument is placed in the groove of the support seat, and the nut on the threaded rod is rotated so that the nut abuts against the side wall of the groove. At the same time, the threaded rod is driven to drive the clamping block to move in the direction of the test instrument until the clamping block abuts against the test instrument, so that the two clamping blocks clamp the test instrument together, thereby clamping the test instrument in the groove and fixing the position of the test instrument relative to the support seat. Such a design can reduce the difficulty of clamping and fixing the test instrument.

[0013] Then, the clamping device of the entire test instrument is moved to adjust the horizontal distance between the test instrument and the sample. During this process, the distance measuring component is used to obtain the distance measuring value in real time, and the horizontal distance between the test instrument and the sample is clearly displayed by controlling the display component, thereby realizing convenient and precise control of the horizontal position of the test instrument relative to the sample and reducing the difficulty of the test operation.

[0014] Next, the height adjustment component is controlled by controlling the display component to drive the support seat to move the test instrument in the up and down directions, so as to adjust the test instrument to a suitable height position, so as to facilitate subsequent testing of the sample by the test instrument.

[0015] In some embodiments of the present invention, the lower wall surface of the groove is a supporting surface for supporting a testing instrument.

[0016] In some embodiments of the present invention, the groove passes through the upper surface of the support seat.

[0017] In some embodiments of the present invention, the distance measuring component is disposed at a middle position of the groove in the second direction.

[0018] In some embodiments of the present invention, the distance measuring component is an infrared distance measuring probe, and the infrared distance measuring probe is embedded in the support base.

[0019] In some embodiments of the present invention, protective pads are provided on the opposite surfaces of the two clamping blocks.

[0020] In some embodiments of the utility model, two side walls of the groove in the second direction are provided with guide through holes, and the clamping assembly further comprises a guide rod, which is adaptively connected to the guide through holes and connected to the clamping block.

[0021] In some embodiments of the present invention, the height adjustment component is an electric push rod, which is arranged on the base. The movable rod of the electric push rod is connected to the support seat and can be extended and retracted in the up and down directions.

[0022] In some embodiments of the present invention, the control display assembly is disposed on the other side of the support base in the first direction.

[0023] In some embodiments of the utility model, the control display component includes a control display screen and a lifting button. The control display screen is electrically connected to the lifting button and the height adjustment component, respectively, and is configured to control the opening and closing of the height adjustment component and to display the lifting value. The control display screen is electrically connected to the distance measuring component and is configured to display the distance measuring value.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0026] Figure 1 It is a rear view of the clamping device of the testing instrument provided by the embodiment of the utility model;

[0027] Figure 2 It is a three-dimensional schematic diagram of a clamping device of a testing instrument provided in an embodiment of the utility model;

[0028] Figure 3 It is a three-dimensional schematic diagram of the clamping device of the testing instrument provided by the embodiment of the utility model from another perspective;

[0029] Figure 4 It is a rear view of a clamping device of a testing instrument provided by another embodiment of the utility model.

[0030] The markings in the accompanying drawings are as follows: 100, base; 200, height adjustment assembly; 210, movable rod; 300, support seat; 310, groove; 320, support surface; 330, connecting through hole; 400, clamping assembly; 410, clamping block; 420, threaded rod; 430, nut; 440, guide rod; 500, infrared ranging probe; 600, control display screen; 610, lifting button. DETAILED DESCRIPTION

[0031] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0032] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the utility model, if there is a word description such as "several", it means one or more, and the meaning of "more" is two or more. Greater than, less than, and more than are understood to exclude the number itself, and above, below, and within are understood to include the number itself. If there is a description of the first, second, and third, it is only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] Reference Figures 1 to 4 , several embodiments of the clamping device of the testing instrument of the utility model are given below.

[0036] like Figures 1 to 3 As shown, the clamping device of the test instrument provided according to the embodiment of the utility model can stably clamp and fix the test instrument, and conveniently and quickly adjust the position of the test instrument relative to the sample, thereby reducing the difficulty of the test operation and improving work efficiency.

[0037] It can be understood that the clamping device of the test instrument provided in this embodiment can be used to fix measuring instruments of different sizes and models, and test auxiliary tools such as cameras and nozzles.

[0038] The clamping device of the test instrument of this embodiment has a first direction, a second direction and an up-down direction, wherein the first direction is perpendicular to the second direction and the up-down direction respectively, and the second direction is perpendicular to the up-down direction. In order to more clearly illustrate the clamping device of the test instrument of the embodiment of the utility model, it is assumed that the first direction is the front-to-back direction and the second direction is the left-to-right direction.

[0039] The clamping device of the testing instrument includes a base 100, a height adjustment component 200, a support base 300, a clamping component 400, a distance measuring component and a control display component.

[0040] The base 100 provides support for the height adjustment component 200, the support seat 300, the clamping component 400, the distance measurement component and the control display component. The shape and size of the base 100 are not limited. In this embodiment, the base 100 is in a truncated cone shape. In addition, a foot pad can be provided on the lower surface of the base 100, preferably, a height-adjustable foot pad is provided.

[0041] The height adjustment component 200 is disposed on the base 100. The height adjustment component 200 is configured to be able to adjust the height position of the support base 300. The height adjustment component 200 can be a high-precision linear drive such as an electric push rod, a linear module, etc.

[0042] In this embodiment, the height adjustment component 200 is an electric push rod. The electric push rod can be installed on the base 100 by bolts. Specifically, the bottom of the electric push rod is fixedly connected to the upper surface of the base 100, the movable rod 210 of the electric push rod is coaxially arranged with the central axis of the base 100, and the movable rod 210 of the electric push rod is fixedly connected to the support seat 300. The movable rod 210 of the electric push rod can be extended and retracted in the up and down direction, thereby adjusting the up and down position of the support seat 300.

[0043] It can be understood that the electric push rod is an existing technology, which has the advantages of novel and exquisite design, small size, high precision, complete synchronization, and good self-locking performance. The encoder on the electric push rod accurately feeds back the number of rotations of the motor spindle of the electric push rod through the number of pulses, thereby accurately calculating the stroke change of the electric push rod and achieving precise control.

[0044] The support base 300 is provided with a groove 310, and the function of the groove 310 is to accommodate the test instrument, and the opening of the groove 310 is open toward one side of the support base 300 in the first direction. The two side walls of the groove 310 in the second direction are provided with connecting through holes 330.

[0045] It is understandable that the support seat 300 and the base 100 can be made of metal materials such as iron. The shape and size of the groove 310 are not limited as long as they can accommodate the measuring instrument. In this embodiment, the groove 310 is square, and the opening of the groove 310 is open to the rear direction of the support seat 300. The axis of the connecting through hole 330 extends in the left-right direction, and the connecting through hole 330 is a circular hole. The two connecting through holes 330 are arranged symmetrically about the support seat 300.

[0046] In some embodiments, the lower wall of the groove 310 is a support surface 320 for supporting the test instrument. After the measuring instrument is placed in the groove 310, the support surface 320 can provide support for the measuring instrument, thereby reducing the force exerted by the clamping assembly 400 on the measuring instrument.

[0047] In some embodiments, the groove 310 passes through the upper surface of the support base 300, so that the staff can place the measuring instrument in the groove 310 from above the groove 310, and conveniently and quickly adjust the position of the measuring instrument in the groove 310. Moreover, the measuring instrument can protrude to the upper area of ​​the groove 310, thereby reducing the volume of the support base 300 and the manufacturing material.

[0048] In other embodiments, the groove 310 does not penetrate the upper surface of the support base 300 , so the staff can only place the measuring instrument into the groove 310 from the opening of the groove 310 and adjust the position of the measuring instrument in the groove 310 .

[0049] There are two clamping assemblies 400, and the two clamping assemblies 400 are respectively arranged corresponding to the two connecting through holes 330. In this embodiment, the two clamping assemblies 400 are arranged in a left-right symmetrical manner with respect to the support seat 300.

[0050] The structure of each clamping assembly 400 includes a clamping block 410 , a threaded rod 420 and a nut 430 .

[0051] The two clamping blocks 410 are both disposed in the groove 310, and the two clamping blocks 410 are disposed opposite to each other, so that a clamping space of the test instrument is defined between the two clamping blocks 410. The opposing surfaces of the two clamping blocks 410 are flat and can contact the measuring instrument.

[0052] It is understandable that the shape and size of the clamp block 410 are not limited as long as it can clamp the measuring instrument. In this embodiment, the clamp block 410 can be made of a metal material such as iron or plastic. The clamp block 410 is truncated, and the outer peripheral surface of the clamp block 410 is smooth without edges and corners to avoid accidental injury to the staff or the measuring instrument.

[0053] In some embodiments, the surfaces of the two clamping blocks 410 facing each other are provided with pads. The pads may be rubber pads. Such a configuration can increase the friction between the clamping blocks 410 and the measuring instrument, so that the measuring instrument in the groove 310 can be suspended. Of course, when the measuring instrument contacts the support surface 320 of the groove 310, the pads are used to enhance the friction between the clamping blocks 410 and the measuring instrument, so as to prevent the measuring instrument from shaking easily.

[0054] The threaded rod 420 is fixedly connected to the clamping block 410. Specifically, one end of the threaded rod 420 is fixedly connected to the center position of the clamping block 410. The threaded rod 420 is adaptively connected to the connecting through hole 330. Specifically, the axis of the threaded rod 420 extends along the left-right direction, the other end of the threaded rod 420 can pass through the connecting through hole 330, the threaded rod 420 contacts the inner circumferential surface of the connecting through hole 330, and the threaded rod 420 can move along the axial direction of the connecting through hole 330, so that the threaded rod 420 drives the clamping block 410 to move, adjusts the position of the clamping block 410 in the left-right direction, and enables the clamping block 410 to abut against the measuring instrument.

[0055] The nut 430 is disposed in the groove 310 and is connected to the threaded rod 420. The threaded rod 420 is disposed through the screw hole of the nut 430. When the threaded rod 420 is fixed, the nut 430 can be moved along the axial direction of the threaded rod 420 by rotating the nut 430.

[0056] It is understandable that after the measuring instrument is set in the groove 310, such as placing the measuring instrument in the middle of the groove 310 in the left-right direction, the two clamping blocks 410 can be in contact with the measuring instrument at the same time, so that the two clamping blocks 410 clamp and fix the measuring instrument; then, the nut 430 is rotated to move the nut 430 in a direction away from the clamping blocks 410 until the nut 430 can abut against the side wall of the groove 310. At this time, the side wall of the groove 310 exerts a limiting effect on the nut 430, and the nut 430 is connected to the threaded rod 420, so that the threaded rod 420 cannot drive the clamping block 410 to move in a direction away from the measuring instrument, and finally the measuring instrument is kept stable and motionless under the action of the two clamping blocks 410.

[0057] The distance measuring component is arranged on the support base 300, and the distance measuring component is fixed relative to the support base 300. The distance measuring component is located below the groove 310, and the distance measuring direction of the distance measuring component is consistent with the opening direction of the groove 310. The function of the distance measuring component is to measure the horizontal distance between the sample and the distance measuring component. The distance measuring component can be an ultrasonic distance measuring sensor, an infrared distance measuring sensor, etc. In this embodiment, the distance measuring component measures the distance in the rear direction of the support base 300. The distance measuring component is an infrared distance measuring probe 500, and the infrared distance measuring probe 500 is embedded in the support base 300.

[0058] In some embodiments, the distance measuring component is disposed in the middle of the groove 310 in the second direction. When the measuring instrument is clamped and fixed, the position of the measuring instrument in the groove 310 is adjusted so that the measuring center point of the measuring instrument and the distance measuring component are kept on the same vertical plane, that is, the two are disposed oppositely in the vertical direction.

[0059] The control display component is arranged on the support base 300, and the control display component is electrically connected to the distance measuring component and the height adjustment component 200 respectively. The control display component is arranged on the other side of the support base 300 in the first direction. The control display component has the functions of control and display.

[0060] In this embodiment, the control display component is located at the front side of the support base 300 , and the control display component and the support base 300 are integrated in design.

[0061] In some embodiments, the control display component is a control display touch screen. The staff can control the opening and closing of the height adjustment component 200 by clicking the control display touch screen, and obtain the distance value measured by the distance measuring component and the lifting distance of the height adjustment component 200 through the control display touch screen.

[0062] In other embodiments, the control display assembly includes a display screen, a controller and a plurality of control buttons, wherein the controller may be a single chip microcomputer or a PLC controller.

[0063] In this embodiment, the control display assembly includes a control display screen 600 and a lifting button 610. The control display screen 600 and the lifting button 610 are both arranged on the support base 300, and the lifting button 610 is located below the control display screen 600. The lifting button 610 includes an ascending button and a descending button.

[0064] The control display screen 600 is electrically connected to the lifting button 610 and the height adjustment component 200, respectively. Moreover, the control display screen 600 is configured to control the opening and closing of the height adjustment component 200 and to display the lifting value. In addition, the control display screen 600 is electrically connected to the distance measurement component, and the control display screen 600 is configured to display the distance measurement value. With such a design, the staff can determine the position of the measuring instrument relative to the sample after knowing the lifting value and the distance measurement value.

[0065] In the process of using the clamping device for the measuring instrument provided in this embodiment, the staff first places the test instrument in the groove 310 of the support seat 300, and rotates the nut 430 on the threaded rod 420 to make the nut 430 abut against the side wall of the groove 310. At the same time, the threaded rod 420 is driven to drive the clamping block 410 to move toward the test instrument until the clamping block 410 abuts against the test instrument. The test instrument is thus clamped together by the two clamping blocks 410 to achieve a clamping effect on the test instrument in the groove 310, so that the position of the test instrument relative to the support seat 300 is fixed. Such a design can reduce the difficulty of clamping and fixing the test instrument.

[0066] Then, the clamping device of the entire test instrument is moved to adjust the horizontal distance between the test instrument and the sample. During this process, the distance measuring component is used to obtain the distance measuring value in real time, and the horizontal distance between the test instrument and the sample is clearly displayed by controlling the display component, thereby realizing convenient and precise control of the horizontal position of the test instrument relative to the sample and reducing the difficulty of the test operation.

[0067] Next, the height adjustment component 200 is controlled by the control display component to drive the support base 300 to move the test instrument in the up and down direction to adjust the test instrument to a suitable height position. After the position adjustment of the measuring instrument is completed, the subsequent work of testing the sample through the test instrument can be carried out.

[0068] In some embodiments, Figure 4 As shown, the support seat 300 is provided with a guide through hole, and specifically, the two side walls of the groove 310 in the second direction are provided with guide through holes. Each clamping assembly 400 also includes a guide rod 440. The guide rod 440 is adapted to be connected with the guide through hole, and the guide rod 440 is fixedly connected with the clamping block 410.

[0069] In this embodiment, the guide rod 440 is a round rod, the guide through hole is a round hole, and the guide rod 440 and the guide through hole are arranged one by one. The outer circumference of the guide rod 440 contacts the inner circumference of the guide through hole. Through the cooperation between the guide rod 440 and the guide through hole, not only a guiding effect is applied to the clamping block 410, but also a rotation-stopping effect is applied to the clamping block 410. Then, after the staff places the measuring instrument in the groove 310 and fixes it, the nut 430 on the threaded rod 420 can be rotated respectively, and the threaded rod 420 will drive the clamping block 410 to automatically move in the direction of the measuring instrument until the clamping block 410 abuts against the measuring instrument. Such a setting can further reduce the difficulty of clamping and fixing.

[0070] It is understandable that the number of guide rods 440 on each clamping block 410 is not limited to one. The guide rod 440 can be located on one side of the threaded rod 420 in the up and down direction, or on one side of the threaded rod 420 in the front and back direction, as long as it does not hinder the rotating nut 430.

[0071] Furthermore, the support seat 300 is provided with springs, and the number of the springs matches the number of the guide rods 440. The springs are located in the groove 310 and sleeved on the guide rods 440. One end of the spring is fixedly connected to the side wall of the groove 310, and the other end of the spring is fixedly connected to the clamping block 410. The spring is configured to drive the clamping block 410 to move in the direction of the clamping space so that the clamping block 410 can abut against the measuring instrument. The elastic force of the springs located on the left and right sides of the clamping space is the same.

[0072] Moreover, a guide portion is provided on one side of the clamping block 410 close to the opening of the groove 310 in the first direction. Specifically, a guide slope is provided on the rear end face of each clamping block 410, and the guide slope is a guide portion that can guide the placement of the measuring instrument.

[0073] Of course, when the groove 310 passes through the upper surface of the support seat 300 , the upper surface of the clamping block 410 is provided with a guiding inclined surface.

[0074] It is understandable that before clamping and fixing, there is a certain distance between the two clamping blocks 410 due to the elastic force of the spring. When the staff extends the measuring instrument into the clamping space between the two clamping blocks 410, since both clamping blocks 410 are provided with guide parts, under the squeezing effect of the measuring instrument, the two clamping blocks 410 move away from each other and always abut against the measuring instrument.

[0075] Next, after releasing the measuring instrument, the measuring instrument abuts against the supporting surface 320 of the groove 310. Since the elastic forces of the springs on the left and right sides of the measuring instrument are consistent, under the elastic force of the springs, the two clamps 410 will adjust the measuring instrument to the middle position of the groove 310 in the left and right directions, thereby realizing automatic centering of the measuring instrument, making the measuring center point and the distance measuring component of the measuring instrument relatively arranged in the up and down directions, thereby reducing the difficulty of clamping and fixing the measuring instrument.

[0076] Finally, the nut 430 on the threaded rod 420 is rotated until the nut 430 abuts against the side wall of the groove 310, and the side wall of the groove 310 is used to apply a clamping limit effect to the nut 430 and the threaded rod 420 to prevent the clamping block 410 from moving away from the measuring instrument, resulting in a decrease in the clamping and fixing effect.

[0077] Furthermore, a hand-cranked linear slide may be provided between the base 100 and the height adjustment assembly 200. The hand-cranked linear slide is used to adjust the position of the height adjustment assembly 200 together with the support base 300 relative to the base 100 in the first direction.

[0078] It can be understood that when the horizontal distance between the distance measuring component and the sample is set almost, there is a difference within 1 to 3 cm. Then, the horizontal distance between the distance measuring component and the sample is adjusted more accurately by hand-cranking the linear slide to meet the distance requirements of the sample test.

[0079] The preferred implementation methods of the utility model are described in detail above, but the invention of the utility model is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the utility model. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A clamping device for a test instrument, characterized in that: include: Base; A height adjustment component is arranged on the base; A support base, provided with a groove for accommodating a test instrument, wherein an opening of the groove is open toward one side of the support base in a first direction, and two side walls of the groove in a second direction are provided with connecting through holes, and the height adjustment assembly is configured to be able to adjust the height position of the support base; A clamping assembly, two of which are provided, the clamping assembly comprising a clamping block, a threaded rod and a nut, the clamping block being arranged in the groove, the threaded rod being adapted and connected to the connecting through hole and connected to the clamping block, the nut being arranged in the groove, the nut being connected to the threaded rod and being able to abut against the side wall of the groove, and the two clamping blocks jointly defining the clamping space of the test instrument; A distance measuring component is arranged on the support seat and is located below the groove, and the distance measuring direction of the distance measuring component is consistent with the opening direction of the groove; The control display component is arranged on the support seat and is electrically connected to the distance measuring component and the height adjusting component respectively. The first direction, the second direction and the up-down direction are perpendicular to each other.

2. The clamping device of the testing instrument according to claim 1, characterized in that: The lower wall surface of the groove is a supporting surface for supporting the testing instrument.

3. The clamping device of the testing instrument according to claim 1 or 2, characterized in that: The groove passes through the upper surface of the support seat.

4. The clamping device of the testing instrument according to claim 3, characterized in that: The distance measuring component is arranged at the middle position of the groove in the second direction.

5. The clamping device of the testing instrument according to claim 4, characterized in that: The distance measuring component is an infrared distance measuring probe, and the infrared distance measuring probe is embedded in the supporting seat.

6. The clamping device of the testing instrument according to claim 1, characterized in that: The opposite surfaces of the two clamping blocks are provided with protective pads.

7. The clamping device of the testing instrument according to claim 1, characterized in that: The two side walls of the groove in the second direction are provided with guide through holes, and the clamping assembly further comprises a guide rod, which is adaptively connected with the guide through holes and connected with the clamping block.

8. The clamping device of the testing instrument according to claim 1, characterized in that: The height adjustment component is an electric push rod, which is arranged on the base. The movable rod of the electric push rod is connected to the support seat and can be extended and retracted in the up and down directions.

9. The clamping device of the testing instrument according to claim 1, characterized in that: The control display assembly is arranged on the other side of the support base in the first direction.

10. The clamping device of the testing instrument according to claim 9, characterized in that: The control display component includes a control display screen and a lifting button. The control display screen is electrically connected to the lifting button and the height adjustment component respectively, and is configured to control the opening and closing of the height adjustment component and to display the lifting value. The control display screen is electrically connected to the distance measuring component and is configured to display the distance measuring value.