Testing device for height measuring sensor

Abstract

The utility model provides a testing device used for a height measuring sensor, the testing device used for the height measuring sensor comprises a rack, a mobile platform, a distance measuring instrument, a first installation member and a second installation member, the mobile platform is arranged on the rack and can move along the vertical direction relative to the rack, the distance measuring instrument is arranged on the mobile platform, and the first installation member and the second installation member are arranged on the rack. The first installation part is arranged on the moving platform and used for installing one end of the height measurement sensor, and the second installation part is arranged on the rack, located below the first installation part and used for installing the other end of the height measurement sensor. According to the testing device for the height measurement sensor, the first mounting piece and the second mounting piece are respectively connected with the end part of the corresponding end of the height measurement sensor, and the mobile platform drives the first mounting piece to move along the vertical direction, so that the height measurement sensor obtains a height measurement value; meanwhile, the actual height value is obtained through the mobile platform on the mobile platform, and the error test of the height measurement sensor is realized through the comparison of the height measurement value and the actual height value.

Description

Technical Field

[0001] The utility model relates to the field of testing equipment, in particular to a testing device for a height measuring sensor. Background Art

[0002] The altimeter sensor is a sensor used to obtain and display the height. The altimeter sensor needs to be tested for error before leaving the factory or before use to ensure that the displayed height of the altimeter sensor is consistent with the actual height or is within the allowable error range.

[0003] The height sensor used in mines is in the shape of a bar, with pressure sensors at both ends and a connector in the middle to connect the two ends. The height value between the two ends is obtained by measuring the pressure difference between the two pressure sensors. However, there is currently no test device for the height sensor used in mines. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the utility model provides a test device for a height measuring sensor.

[0005] The test device for the height measuring sensor of the embodiment of the utility model comprises:

[0006] frame;

[0007] A mobile platform, which is arranged on the frame and can move in a vertical direction relative to the frame;

[0008] a rangefinder, the rangefinder being arranged on the mobile platform;

[0009] A first mounting member, the first mounting member is disposed on the mobile platform and is used to mount one end of the height measuring sensor;

[0010] A second mounting member is provided on the frame and is located below the first mounting member to mount the other end of the height measuring sensor.

[0011] The testing device for the height measuring sensor of the embodiment of the utility model is connected to the end portions corresponding to one end of the height measuring sensor through the first mounting member and the second mounting member respectively, and the mobile platform drives the first mounting member to move in the vertical direction so that the height measuring sensor obtains a height measurement value, and at the same time obtains an actual height value through the mobile platform on the mobile platform, and the error test of the height measuring sensor is realized by comparing the height measurement value with the actual height value.

[0012] In some embodiments, the first mounting member and the rangefinder are located at the same height.

[0013] In some embodiments, the testing device for measuring the height sensor also includes a first chain transmission mechanism and a driving member, wherein the driving member and the first chain transmission mechanism are both arranged on the frame, the driving member is connected to the first chain transmission mechanism to drive the first chain transmission mechanism to transmit in a vertical direction, and the movable platform is connected to the first chain transmission mechanism to move in a vertical direction under the drive of the first chain transmission mechanism.

[0014] In some embodiments, the testing device for measuring the height sensor further includes a second chain transmission mechanism connected between the first chain transmission mechanism and the driving member.

[0015] In some embodiments, the first chain transmission mechanism comprises:

[0016] A first rotating shaft, which is disposed on the frame and can rotate around an axial direction of the first rotating shaft relative to the frame;

[0017] a second rotating shaft, the second rotating shaft being arranged on the frame and being rotatable relative to the frame about an axial direction of the second rotating shaft, the second rotating shaft being arranged parallel to the first rotating shaft and being located below the first rotating shaft, and the second rotating shaft being connected to the driving member;

[0018] A first sprocket, wherein the first sprocket is disposed on the first rotating shaft, and a plurality of the first sprockets are arranged at intervals along the axial direction of the first rotating shaft;

[0019] A second sprocket, wherein the second sprocket is disposed on the second rotating shaft, and a plurality of the second sprockets are arranged at intervals along the axial direction of the second rotating shaft, and the second sprockets are disposed one-to-one correspondingly to the first sprockets;

[0020] A first chain is wrapped around the first sprocket and the second sprocket that are correspondingly arranged, and the first chain is connected to the mobile platform.

[0021] In some embodiments, the second chain transmission mechanism comprises:

[0022] a third sprocket, the third sprocket being arranged on the second rotating shaft;

[0023] a fourth sprocket, the fourth sprocket being arranged on the driving member;

[0024] A second chain is looped around the third sprocket and the fourth sprocket.

[0025] In some embodiments, the testing device for measuring the height sensor further includes a guide assembly, which extends in a vertical direction and is disposed on the frame, and the movable platform is connected to the guide assembly to move in a vertical direction under the guidance of the guide assembly.

[0026] In some embodiments, the guide assembly includes a guide rail and a slider, the guide rail extends in a vertical direction and is disposed on the frame, the slider is disposed on the guide rail and can move in a vertical direction relative to the guide rail, and the slider is connected to the mobile platform.

[0027] In some embodiments, the guide assembly further includes a limiter, and the limiters are provided at both the top and bottom ends of the guide rail, and the slider moves between the limiter at the top and the limiter at the bottom.

[0028] In some embodiments, the testing device for the height measuring sensor also includes a controller, which is electrically connected to the rangefinder and the height measuring sensor, respectively, to obtain and compare the measurement values ​​of the rangefinder and the height measuring sensor. The controller is also connected to the driving member to control the opening and closing of the driving member and / or the moving speed of the mobile platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a testing device for a height measuring sensor according to an embodiment of the utility model.

[0030] Reference numerals:

[0031] 1. Frame; 2. Mobile platform; 3. Distance meter; 4. First mounting member; 5. Second mounting member; 6. First chain transmission mechanism; 61. First rotating shaft; 62. Second rotating shaft; 63. First sprocket; 64. Second sprocket; 65. First chain; 7. Driving member; 8. Second chain transmission mechanism; 81. Third sprocket; 82. Fourth sprocket; 83. Second chain; 9. Guide assembly; 91. Guide rail; 92. Slider; 93. Limiting member. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0033] Reference below Figure 1 A test device for a height measuring sensor according to an embodiment of the present utility model is described.

[0034] like Figure 1 As shown, the testing device for the height measuring sensor according to the embodiment of the utility model comprises a frame 1 , a mobile platform 2 , a rangefinder 3 , a first mounting member 4 and a second mounting member 5 .

[0035] The mobile platform 2 is arranged on the frame 1 and can move in the vertical direction relative to the frame 1. The rangefinder 3 is arranged on the mobile platform 2. The first mounting member 4 is arranged on the mobile platform 2 to mount one end of the height sensor. The second mounting member 5 is arranged on the frame 1 and is located below the first mounting member 4 to mount the other end of the height sensor.

[0036] like Figure 1 As shown, the frame 1 includes a base and a main body, the base is horizontally arranged, and the main body is vertically arranged on the base, so that the frame 1 has good stability. The frame 1 is preferably made of metal, and more preferably stainless steel. The mobile platform 2 is arranged on the main body of the frame 1, and can move in the vertical direction relative to the main body of the frame 1. The mobile platform 2 is provided with a first mounting member 4 and a rangefinder 3. The frame 1 is provided with a second mounting member 5, and the second mounting member 5 is located below the first mounting member 4. The rangefinder 3 is preferably a laser rangefinder.

[0037] Preferably, the mobile platform 2 extends in the left-right direction, and is provided with a plurality of first mounting members 4 arranged at intervals along the left-right direction, and the frame 1 is provided with a plurality of second mounting members 5 arranged at intervals along the left-right direction, and the plurality of second mounting members 5 are arranged one by one below the plurality of first mounting members 4.

[0038] The first mounting member 4 and the second mounting member 5 are used to mount the same height sensor together. The height sensor is preferably a height sensor for mining, and more preferably an intrinsically safe height sensor for mining. The height sensor is in a bar shape, and has pressure sensors at both ends of the height sensor, with a connector connecting the two ends in the middle. The pressures are measured by the pressure sensors at both ends of the height sensor, and the height value between the two ends is obtained by the pressure difference.

[0039] When measuring, the first mounting member 4 is mounted on the upper end of the height sensor, and the second mounting member 5 is mounted on the lower end of the height sensor. The first mounting member 4 and the upper end of the height sensor are driven to move in the vertical direction by the mobile platform 2, so that a pressure difference is generated at both ends of the height sensor to obtain the height measurement value measured by the height sensor. The rangefinder 3 is calibrated in advance, and the mobile platform 2 simultaneously drives the rangefinder 3 to move in the vertical direction when moving, so as to obtain the actual value of the height through the rangefinder 3. Then, the actual value of the height is compared with the measured value of the height to obtain whether the measured value of the height has an error and the size of the error, so as to realize the error test of the height sensor. Preferably, the first mounting member 4 and the rangefinder 3 are located at the same height to make the actual value of the height of the rangefinder 3 more accurate.

[0040] The first mounting member 4 and the second mounting member 5 may use a clamping structure to mount the end of the height measuring sensor, or may use a plug-in structure to mount the end of the height measuring sensor.

[0041] The testing device for the height measuring sensor of the embodiment of the utility model is connected to the end portions corresponding to one end of the height measuring sensor through the first mounting member and the second mounting member respectively, and the mobile platform drives the first mounting member to move in the vertical direction so that the height measuring sensor obtains a height measurement value, and at the same time obtains an actual height value through the mobile platform on the mobile platform, and the error test of the height measuring sensor is realized by comparing the height measurement value with the actual height value.

[0042] In some embodiments, the testing device for the height measuring sensor of the utility model embodiment also includes a first chain transmission mechanism 6 and a driving member 7. The driving member 7 and the first chain transmission mechanism 6 are both arranged on the frame 1. The driving member 7 is connected to the first chain transmission mechanism 6 to drive the first chain transmission mechanism 6 to transmit in the vertical direction. The mobile platform 2 is connected to the first chain transmission mechanism 6 to move in the vertical direction under the drive of the first chain transmission mechanism 6.

[0043] like Figure 1 As shown, a first chain transmission mechanism 6 is provided on the main body of the frame 1, and a driving member 7 is provided on the base of the frame 1. The driving member 7 is connected to the first chain transmission mechanism 6, and the first chain transmission mechanism 6 is connected to the mobile platform 2, so that the first chain transmission mechanism 6 is driven by the driving member 7 to transmit in the vertical direction and drive the mobile platform 2 to move in the vertical direction.

[0044] Preferably, the first chain transmission mechanism 6 includes a first rotating shaft 61 , a second rotating shaft 62 , a first sprocket 63 , a second sprocket 64 and a first chain 65 .

[0045] The first rotating shaft 61 and the second rotating shaft 62 are both arranged on the main body of the frame 1. The first rotating shaft 61 and the second rotating shaft 62 are arranged at intervals in the vertical direction and both extend in the left-right direction. The first rotating shaft 61 and the second rotating shaft 62 can rotate in the left-right direction relative to the frame 1. Preferably, the second rotating shaft 62 is located below the first rotating shaft 61.

[0046] The first rotating shaft 61 is preferably provided with two first sprockets 63, and the two first sprockets 63 are arranged at intervals along the left-right direction. The second rotating shaft 62 is preferably provided with two second sprockets 64, and the two second sprockets 64 are arranged at intervals along the left-right direction. The two second sprockets 64 are arranged below the two first sprockets 63 in a one-to-one correspondence.

[0047] There are preferably two first chains 65, one of which is wrapped around the first sprocket 63 and the second sprocket 64 on the left, and the other is wrapped around the first sprocket 63 and the second sprocket 64 on the right. The left end of the mobile platform 2 is connected to the first chain 65 on the left, and the right end of the mobile platform 2 is connected to the first chain 65 on the right.

[0048] The driving member 7 is connected to the second rotating shaft 62 to drive the second rotating shaft 62 to rotate around its axis, and drive the two second sprockets 64 to rotate around the axis of the second rotating shaft 62, drive the two first chains 65 to move synchronously through the two second sprockets 64, and synchronously drive the mobile platform 2 to move in the vertical direction.

[0049] The first chain transmission mechanism drives the mobile platform to move in the vertical direction with high stability and movement accuracy. The first chains are respectively connected at both ends of the mobile platform to make the mobile platform more stable and ensure the horizontality of the mobile platform in the left and right directions.

[0050] It is understood that the structure of the test device for the height sensor is not limited to the following. Figure 1 As shown, in other embodiments, the driving member drives the moving platform to move in the vertical direction through a toothed belt transmission mechanism.

[0051] In some embodiments, the testing device for the height measuring sensor of the embodiment of the utility model further includes a second chain transmission mechanism 8 , and the second chain transmission mechanism 8 is connected between the first chain transmission mechanism 6 and the driving member 7 .

[0052] like Figure 1 As described above, the driving member 7 is connected to the first chain transmission mechanism 6 via the second chain transmission mechanism 8 , so as to drive the first chain transmission mechanism 6 to transmit in the vertical direction via the second chain transmission mechanism 8 .

[0053] Preferably, the second chain transmission mechanism 8 includes a third sprocket 81 , a fourth sprocket 82 and a second chain 83 .

[0054] The third sprocket 81 is arranged on the second rotating shaft 62. The fourth sprocket 82 is arranged on the driving member 7. The second chain 83 is wound around the third sprocket 81 and the fourth sprocket 82.

[0055] The left end of the second rotating shaft 62 is provided with a third sprocket 81, and the driving member 7 is preferably a rotating motor, and the driving shaft of the rotating motor extending in the left-right direction is provided with a fourth sprocket 82, and the fourth sprocket 82 is located below the third sprocket 81, and the third sprocket 81 and the fourth sprocket 82 are surrounded by a second chain 83. The driving member 7 drives the third sprocket 81 to rotate in the left-right direction, and the third sprocket 81 drives the fourth sprocket 82 to rotate around the axial direction of the left and right second rotating shaft 62 through the second chain 83, so as to drive the second rotating shaft 62 to rotate in the left-right direction.

[0056] It is understandable that the driving member is not limited to being connected to the first chain transmission mechanism via the second chain transmission mechanism. In other embodiments, the driving member and the second rotating shaft are connected via gear transmission, or the driving member is directly connected to the second rotating shaft.

[0057] In some embodiments, the testing device for the height measuring sensor of the utility model embodiment also includes a guide assembly 9, which extends in the vertical direction and is arranged on the frame 1, and the mobile platform 2 is connected to the guide assembly 9 to move in the vertical direction under the guidance of the guide assembly 9.

[0058] like Figure 1 As shown, the main body of the frame 1 is provided with a guide assembly 9 extending in the vertical direction, and the mobile platform 2 is connected to the guide assembly 9 so as to move in the vertical direction under the guidance of the guide assembly 9, so that the mobile platform 2 has higher stability and smoothness during the movement.

[0059] Preferably, the guide assembly 9 includes a guide rail 91 and a slider 92 , the guide rail 91 extends in the vertical direction and is arranged on the main body of the frame 1 , the slider 92 is arranged on the guide rail 91 and can move in the vertical direction relative to the guide rail 91 , and the slider 92 is connected to the mobile platform 2 .

[0060] There are preferably two guide rails 91, and the two guide rails 91 are arranged at intervals in the left-right direction. Each guide rail 91 is provided with two sliders 92 arranged at intervals in the vertical direction. The left end of the mobile platform 2 has two first brackets extending to the left, and the two first brackets are connected one-to-one to the two sliders 92 located on the left guide rail 91. The right end of the mobile platform 2 has two second brackets extending to the right, and the two second brackets are connected one-to-one to the two sliders 92 located on the right guide rail 91, so that the left and right ends of the mobile platform 2 are respectively guided by the guide assembly 9, so that the mobile platform 2 has higher stability and smoothness during movement.

[0061] Preferably, the two first chains 65 are located between the two guide rails 91 , and the second chain 83 is also located between the two guide rails 91 .

[0062] It is understood that the structure of the guide assembly is not limited to Figure 1 As shown, in other embodiments, the guide assembly includes a slide bar that passes through the mobile platform, and the slide bar extends in a vertical direction and is arranged on the main body of the frame.

[0063] In some embodiments, the guide assembly 9 further includes a limiter 93 , and the top and bottom ends of the guide rail 91 are both provided with limiters 93 , and the slider 92 moves between the limiter 93 at the top and the limiter 93 at the bottom.

[0064] like Figure 1As shown, each guide rail 91 is provided with a limiter 93 at the top and bottom, and the limiters 93 at the top of the two guide rails 91 are arranged flush with each other, and the limiters 93 at the bottom of the two guide rails 91 are arranged flush with each other. The limiter 93 is used to stop the slider 92 on the corresponding guide rail 91 so that the slider 92 has a limit position of movement. In other words, the slider 92 on the guide rail 91 moves between the limiters 93 of the guide rail 91 on the corresponding guide rail 91.

[0065] Preferably, the limiting member 93 adopts an elastic structure, such as a rubber block or a spring, to prevent the slider 92 from making hard contact with the limiting member 93 and causing damage to either of them.

[0066] In some embodiments, the testing device for the height measuring sensor of the embodiment of the utility model also includes a controller (not shown in the figure), which is electrically connected to the rangefinder 3 and the height measuring sensor respectively to obtain the measurement values ​​of the rangefinder 3 and the height measuring sensor and compare them. The controller is also connected to the driving member 7 to control the opening and closing of the driving member 7 and / or the moving speed of the mobile platform 2.

[0067] Specifically, the controller is electrically connected to the rangefinder 3, the height measuring sensor and the driving member 7 respectively. The controller obtains the actual height value of the rangefinder 3 by being electrically connected to the rangefinder 3. The controller obtains the height measurement value of the height measuring sensor by being electrically connected to the height measuring sensor. At the same time, the controller can compare the actual height value with the height measurement value and display the comparison result. If a preset error range value is input in advance in the controller, the controller can directly display whether the error range of the height measuring sensor meets the requirements based on the comparison result and the error range value.

[0068] The controller is electrically connected to the driving member 7 to control the opening and closing of the driving member 7, thereby controlling the start and stop of the mobile platform 2, and controls the running speed of the driving member 7, thereby controlling the lifting speed of the mobile platform 2.

[0069] During the test, the mobile platform 2 can be first raised to a specified height, and then the actual height value of the rangefinder 3 and the height measurement value of the height sensor can be obtained and compared. The lifting speed of the mobile platform 2 can also be controlled, and during the movement of the mobile platform 2, the real-time actual height value of the rangefinder 3 and the real-time height measurement value of the height sensor can be obtained and compared in real time.

[0070] In some embodiments, the testing device for the height measuring sensor of the embodiment of the utility model also includes a power supply (shown in the figure), a voltage sensor (shown in the figure) and a current sensor (shown in the figure). The power supply is arranged at the base of the frame 1 and is connected to the lower end of the height measuring sensor through an interface to supply power to the height measuring sensor during the test. The voltage sensor and the current sensor are electrically connected to the lower end of the height measuring sensor to obtain the real-time voltage and real-time current of the height measuring sensor during the test, respectively, to test whether the voltage value and current value of the height measuring sensor during operation meet the requirements, or to test whether the height measuring sensor can operate normally under standard voltage and standard current.

[0071] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", etc. indicate orientations or positional relationships 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0072] In addition, the terms "first" and "second" are only used for distinction, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0073] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0075] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0076] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A test device for a height measuring sensor, characterized in that: include: Rack (1); A mobile platform (2), the mobile platform (2) being arranged on the frame (1) and being movable in a vertical direction relative to the frame (1); a rangefinder (3), wherein the rangefinder (3) is arranged on the mobile platform (2); A first mounting member (4), the first mounting member (4) being arranged on the mobile platform (2) and used for mounting one end of a height measuring sensor; A second mounting member (5), the second mounting member (5) is arranged on the frame (1) and is located below the first mounting member (4) to be used for mounting the other end of the height measuring sensor.

2. The testing device for a height measuring sensor according to claim 1, characterized in that: The first mounting member (4) and the distance meter (3) are located at the same height.

3. The testing device for height measuring sensor according to claim 1, characterized in that: It also comprises a first chain transmission mechanism (6) and a driving member (7), wherein the driving member (7) and the first chain transmission mechanism (6) are both arranged on the frame (1), the driving member (7) is connected to the first chain transmission mechanism (6) to drive the first chain transmission mechanism (6) to transmit in a vertical direction, and the movable platform (2) is connected to the first chain transmission mechanism (6) to move in a vertical direction under the drive of the first chain transmission mechanism (6).

4. The testing device for height measuring sensor according to claim 3, characterized in that: It also comprises a second chain transmission mechanism (8), wherein the second chain transmission mechanism (8) is connected between the first chain transmission mechanism (6) and the driving member (7).

5. The testing device for height measuring sensor according to claim 4, characterized in that: The first chain transmission mechanism (6) comprises: A first rotating shaft (61), the first rotating shaft (61) being arranged on the frame (1) and being rotatable relative to the frame (1) around an axial direction of the first rotating shaft (61); a second rotating shaft (62), the second rotating shaft (62) being arranged on the frame (1) and being rotatable relative to the frame (1) around the axial direction of the second rotating shaft (62), the second rotating shaft (62) being arranged parallel to the first rotating shaft (61) and being located below the first rotating shaft (61), and the second rotating shaft (62) being connected to the driving member (7); A first sprocket (63), wherein the first sprocket (63) is disposed on the first rotating shaft (61), and a plurality of the first sprockets (63) are arranged at intervals along the axial direction of the first rotating shaft (61); A second sprocket (64), wherein the second sprocket (64) is disposed on the second rotating shaft (62), a plurality of the second sprockets (64) are arranged at intervals along the axial direction of the second rotating shaft (62), and the second sprockets (64) and the first sprockets (63) are disposed in a one-to-one correspondence; A first chain (65), the first chain (65) is looped around the first sprocket (63) and the second sprocket (64) which are arranged correspondingly, and the first chain (65) is connected to the mobile platform (2).

6. The testing device for height measuring sensor according to claim 5, characterized in that: The second chain transmission mechanism (8) comprises: a third sprocket (81), wherein the third sprocket (81) is disposed on the second rotating shaft (62); a fourth sprocket (82), the fourth sprocket (82) being arranged on the driving member (7); A second chain (83), wherein the second chain (83) is looped around the third sprocket (81) and the fourth sprocket (82).

7. The testing device for height measuring sensor according to claim 1, characterized in that: It also comprises a guide assembly (9), which extends in a vertical direction and is arranged on the frame (1); the movable platform (2) is connected to the guide assembly (9) so as to move in a vertical direction under the guidance of the guide assembly (9).

8. The testing device for height measuring sensor according to claim 7, characterized in that: The guide assembly (9) comprises a guide rail (91) and a slider (92); the guide rail (91) extends in a vertical direction and is arranged on the frame (1); the slider (92) is arranged on the guide rail (91) and can move in a vertical direction relative to the guide rail (91); and the slider (92) is connected to the mobile platform (2).

9. The testing device for a height measuring sensor according to claim 8, characterized in that: The guide assembly (9) further comprises a limiting member (93), the limiting member (93) being provided at both the top and bottom ends of the guide rail (91), and the slider (92) moves between the limiting member (93) at the top and the limiting member (93) at the bottom.

10. The testing device for height measuring sensor according to claim 3, characterized in that: The device also comprises a controller, which is electrically connected to the rangefinder (3) and the height sensor, respectively, so as to obtain and compare the measurement values ​​of the rangefinder (3) and the height sensor. The controller is also connected to the driving member (7) so as to control the opening and closing of the driving member (7) and / or the moving speed of the mobile platform (2).

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