Measuring device and measuring equipment

Abstract

The utility model relates to the technical field of measurement and detection, in particular to a measuring device and measuring equipment, a measuring platform is used for bearing a measuring support, and a supporting seat is movably arranged on the measuring platform to move on the measuring platform so as to roughly adjust the measuring support. The positioning pin is located in the limiting area so that the positioning pin can be limited on the peripheral side of the positioning pin, and the positioning pin can move within a certain range. Due to the fact that the diameter of the first locking piece is smaller than the aperture of the locking hole, the positioning pin is moved to enable the first locking piece to move in the locking hole, after the positioning pin is adjusted to the expected position, the positioning pin is limited by increasing or reducing the thickness of the limiting block, then the first locking piece is fixed, and therefore the positioning pin is finely adjusted in at least one direction. And coarse adjustment and fine adjustment are matched, so that the adjustment range of the measurement support can be increased to meet the measurement requirements of different vehicle types, the workload of storage, maintenance, management and the like of the measurement support is reduced, and the vehicle manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement and detection, in particular to a measuring device and measuring equipment. Background Art

[0002] At present, during the trial production of prototypes and commercial vehicle production, automobile manufacturers need to monitor the dimensional accuracy of the body in white through three-coordinate measurement on a daily basis. The measuring support is an important carrier for measuring the dimensional accuracy of the body in white. Its main function is to locate the body in white and ensure the stability of the three-coordinate measurement equipment for the body in white measurement data. In order to respond to the development of the market, various new models have emerged in an endless stream from major automobile OEMs. The body sizes of various models are different. In order to meet the body measurement, a set of measuring supports needs to be developed for each model. Over time, there are more and more models, and more and more measuring supports follow. The storage, maintenance, and management of measuring supports increase, thereby increasing the cost of car manufacturing. Utility Model Content

[0003] The purpose of the present application is to provide a measuring device and a measuring equipment.

[0004] The present application provides a measuring device, including a measuring platform and a measuring support, the measuring support including a supporting seat and a positioning pin assembly, the supporting seat being movably arranged on the measuring platform, the positioning pin assembly being arranged on the supporting seat, the positioning pin assembly including a mounting seat, a positioning pin, a limiting block, and a first locking piece, the positioning pin being arranged on the mounting seat and extending in a first direction, at least one limiting block being arranged on the peripheral side of the positioning pin, the limiting block being connected to the mounting seat and protruding in the first direction, the mounting seat being provided with a locking hole, the first locking piece passing through the positioning pin and inserted into the locking hole, the diameter of the first locking piece being smaller than the aperture of the locking hole, the positioning pin being moved to displace the first locking piece in the locking hole, thereby adjusting the positioning pin, increasing or decreasing the thickness of the limiting block to limit the positioning pin, and fixing the first locking piece after limiting the positioning pin.

[0005] In an exemplary embodiment of the present application, the limit block includes a first limit block and a second limit block, the first limit block is located on the peripheral side of the positioning pin in the second direction, and the second limit block is located on the peripheral side of the positioning pin in the third direction, and the first direction, the second direction, and the third direction are perpendicular to each other.

[0006] In an exemplary embodiment of the present application, the positioning pin assembly further includes a first gasket, which is disposed between the positioning pin and the limiting block, and the thickness of the gasket is increased or decreased to limit the positioning pin.

[0007] In an exemplary embodiment of the present application, the locating pin assembly further includes a second gasket, which is disposed between the locating pin and the mounting seat, and the thickness of the gasket is increased or decreased to adjust the displacement of the locating pin in the first direction.

[0008] In an exemplary embodiment of the present application, the support base includes a base plate and a support bracket, the base plate is arranged on the measuring platform, the support bracket is arranged on the base plate and extends along the first direction, and the positioning pin assembly is arranged on a side of the support bracket away from the base plate.

[0009] In an exemplary embodiment of the present application, the support bracket includes: a support column, which is extended along the first direction and is arranged on the base plate, and the positioning pin assembly is provided on the side of the support column away from the base plate; a support rib, which is arranged on the circumferential side of the support column and is connected to the base plate, and the support column is movably arranged between the support ribs, and the support column is moved in the first direction to be close to or away from the base plate, and the support column is fixed by the support ribs to adjust the displacement of the positioning pin assembly in the first direction.

[0010] In an exemplary embodiment of the present application, the support column is provided with a groove along the first direction, and the groove is provided with a notch on at least one side facing the positioning pin; the measuring device includes a connecting assembly, the connecting assembly includes a connecting piece and a connecting seat, the connecting seat is arranged in the groove, and the connecting piece passes through the mounting seat and is connected to the connecting seat.

[0011] In an exemplary embodiment of the present application, the support bracket includes a connecting block, which is arranged between the support rib and the support column, and the connecting block is fixedly connected to the support rib; the measuring device also includes a second locking piece, which passes through the connecting block and the support column, and the second locking piece is released or locked to allow the support column to move or be fixed in the first direction.

[0012] In an exemplary embodiment of the present application, the measuring platform is provided with a plurality of positioning holes; the bottom plate is provided with positioning grooves, the positioning grooves comprising a first positioning groove arranged along the second direction and a second positioning groove arranged along the third direction, the first positioning groove and the second positioning groove intersect;

[0013] The measuring device includes a positioning member, which is inserted into the positioning hole through the positioning groove along a first direction. The positioning member is threadedly connected to the positioning hole. The positioning member is rotated to loosen and lock the base plate and the measuring platform. The positioning member moves in the positioning groove to adjust the displacement of the base plate in the first direction or the second direction.

[0014] The present application also provides a measuring device, comprising the measuring apparatus.

[0015] A measuring device and measuring equipment of the present application scheme have the following beneficial effects: the measuring platform is used to carry the measuring support, and the support seat is movably arranged on the measuring platform so as to be able to move on the measuring platform, thereby making a rough adjustment to the measuring support. The positioning pin is arranged on the mounting seat and extends in the first direction, and at least one limit block is arranged on the peripheral side of the positioning pin, and the limit block is connected to the mounting seat and protrudes in the first direction, and the protruding limit block forms a limit area on the mounting seat, and the positioning pin is located in the limit area to limit the positioning pin on the peripheral side of the positioning pin, so that the positioning pin can move within a certain range. Since the diameter of the first locking member is smaller than the aperture of the locking hole, the first locking member is displaced in the locking hole by moving the positioning pin. When adjusted to the expected position, the positioning pin is limited by increasing or reducing the thickness of the limit block, and then the first locking member is fixed, thereby making a fine adjustment to the positioning pin in at least one direction. By coarse adjustment and fine adjustment, the adjustment range of the measuring support can be increased to meet the measurement requirements of different models, reduce the workload of storage, maintenance, and management of the measuring support, and thus reduce vehicle manufacturing costs.

[0016] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a first structural schematic diagram of a measuring device in an embodiment of the utility model;

[0020] Figure 2 It is a structural schematic diagram of a measuring support in an embodiment of the utility model;

[0021] Figure 3 This is a first structural schematic diagram of the positioning pin assembly in an embodiment of the utility model;

[0022] Figure 4 This is a second structural schematic diagram of the positioning pin assembly in the embodiment of the utility model;

[0023] Figure 5 It is a structural schematic diagram of a support column in an embodiment of the utility model;

[0024] Figure 6 It is a third structural schematic diagram of the positioning pin assembly in the embodiment of the utility model;

[0025] Figure 7 It is a schematic diagram of the assembly of the support ribs and the connecting block in the embodiment of the utility model;

[0026] Figure 8 It is a second structural schematic diagram of a measuring device in an embodiment of the utility model.

[0027] Description of reference numerals:

[0028] 10. Measuring platform; 11. Positioning hole; 20. Measuring support; 21. Support seat; 211. Bottom plate; 2111. Positioning groove; 21111. First positioning groove; 21112. Second positioning groove; 212. Support bracket; 2121. Support column; 21211. Groove; 2122. Support rib; 2123. Connecting block; 22. Positioning pin assembly; 221. Mounting seat; 2211. Locking hole; 222. Positioning pin; 223. Limiting block; 2231. First limiting block; 2232. Second limiting block; 224. First locking member; 225. First gasket; 226. Second gasket; 30. Connecting assembly; 31. Connecting seat; 40. Positioning member; X1. First direction; X2. Second direction; X3. Third direction. DETAILED DESCRIPTION

[0029] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0030] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0031] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0032] It should be noted that the "multiple" mentioned in this article refers to two or more. "And / or" describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0033] At present, during the trial production of prototypes and commercial vehicle production, automobile manufacturers need to monitor the dimensional accuracy of the body in white through three-coordinate measurement on a daily basis. The measuring support is an important carrier for measuring the dimensional accuracy of the body in white. Its main function is to locate the body in white and ensure the stability of the three-coordinate measurement equipment for the body in white measurement data. In order to respond to the development of the market, various new models have emerged in an endless stream from major automobile OEMs. The body sizes of various models are different. In order to meet the body measurement, a set of measuring supports needs to be developed for each model. Over time, there are more and more models, and more and more measuring supports follow. The storage, maintenance, and management of measuring supports increase, thereby increasing the cost of car manufacturing.

[0034] In order to solve the above technical problems, refer to Figures 1 to 3 As shown, the present application provides a measuring device, including a measuring platform 10 and a measuring support 20, the measuring support 20 includes a support seat 21 and a positioning pin assembly 22, the support seat 21 is movably arranged on the measuring platform 10, the positioning pin assembly 22 is arranged on the support seat 21, the positioning pin assembly 22 includes a mounting seat 221, a positioning pin 222, a limit block 223, and a first locking member 224, the positioning pin 222 is arranged on the mounting seat 221 and extends in a first direction X1, at least one limit block 223 is arranged on the peripheral side of the positioning pin 222, and the limit The block 223 is connected to the mounting seat 221 and protrudes in the first direction X1. The mounting seat 221 is provided with a locking hole 2211. The first locking member 224 passes through the positioning pin 222 and is inserted into the locking hole 2211. The diameter of the first locking member 224 is smaller than the aperture of the locking hole 2211. The positioning pin 222 is moved to displace the first locking member 224 in the locking hole 2211, thereby adjusting the positioning pin 222, increasing or decreasing the thickness of the limit block 223 to limit the positioning pin 222, and fixing the first locking member 224 after limiting the positioning pin 222.

[0035] The measuring platform 10 is used to carry the measuring support 20, and the support seat 21 is movably arranged on the measuring platform 10 so as to be able to move on the measuring platform 10, thereby roughly adjusting the measuring support 20. The positioning pin 222 is arranged on the mounting seat 221 and extends in the first direction X1. At least one limit block 223 is arranged around the positioning pin 222. The limit block 223 is connected to the mounting seat 221 and protrudes in the first direction X1. The protruding limit block 223 forms a limit area on the mounting seat 221. The positioning pin 222 is located in the limit area to limit the positioning pin 222 around the positioning pin 222, so that the positioning pin 222 can move within a certain range. Since the diameter of the first locking member 224 is smaller than the aperture of the locking hole 2211, the positioning pin 222 is moved to displace the first locking member 224 in the locking hole 2211. After adjusting to the expected position, the positioning pin 222 is limited by increasing or decreasing the thickness of the limit block 223, and then the first locking member 224 is fixed, so as to fine-tune the positioning pin 222 in at least one direction. With the combination of coarse adjustment and fine adjustment, the adjustment range of the measuring support 20 can be increased to meet the measurement requirements of different models, reduce the workload of storage, maintenance, and management of the measuring support 20, and thus reduce the cost of vehicle manufacturing.

[0036] In some embodiments, reference Figures 1 to 3 As shown, there is a coordinate axis, in which the positions of the first direction X1, the second direction X2 and the third direction X3 are shown. The first direction X1, the second direction X2 and the third direction X3 are perpendicular to each other. The first direction X1 is the vertical direction, and the second direction X2 and the third direction X3 are two directions perpendicular to each other on the horizontal plane.

[0037] In some embodiments, the body-in-white of the vehicle is supported on one side in the first direction X1 by the positioning pin 222. Specifically, the body-in-white is located on the positioning pin 222. When the vehicle model is determined, the support bracket is roughly adjusted first, and the body-in-white is placed on the positioning pin 222 and then fine-tuned. Of course, it is also possible to perform rough adjustment and partial fine adjustment according to the body-in-white first, and then further fine-adjust to position the body-in-white. During rough adjustment, there is a larger size range and a larger moving distance, so that the approximate position of the vehicle can be determined quickly; during fine adjustment, there is a smaller size range and a smaller moving distance, and after the approximate position is determined, the vehicle positioning has a higher accuracy.

[0038] In some embodiments, the first locking member 224 is a bolt, the locking hole 2211 is a threaded hole, and the first locking member 224 is threadedly connected to the locking hole 2211. The positioning pin 222 is machined using Q235 steel. The major automobile OEMs develop vehicle bodies on a platform basis, and the sizes of the positioning holes 11 of each vehicle body can be designed to be consistent, so as to reduce the probability of replacing the positioning pin 222 model, and improve the versatility of the positioning pin 222 in the later stage. The mounting seat 221 is machined using Q235 steel.

[0039] In some embodiments, reference Figure 3 As shown, the limit block 223 includes a first limit block 2231 and a second limit block 2232. The first limit block 2231 is located on the circumference of the positioning pin 222 in the second direction X2, and the second limit block 2232 is located on the circumference of the positioning pin 222 in the third direction X3. The number of the first limit block 2231 and the second limit block 2232 is one, and the positioning pin 222 is limited on one side, and the other side is open, so that the positioning pin 222 can be easily installed and adjusted. In one embodiment, the first limit block 2231 and the second limit block 2232 are threadedly connected to the mounting seat 221. By changing the thickness of the first limit block 2231 and the second limit block 2232, the positioning pin 222 can be pressed against to limit it. In another embodiment, the first limit block 2231 and the second limit block 2232 are respectively fixedly connected to the mounting base 221 (including by welding, bolt fixing, riveting, etc.), a first threaded hole is set on the first limit block 2231 and the second limit block 2232, and a second threaded hole is set on the positioning pin 222. The first threaded hole and the second threaded hole are connected by rotating the bolt at the same time, wherein the length of the bolt is greater than the rotation stroke of the bolt, and when the bolt is rotated, it can push the positioning pin 222 to move in the corresponding direction, thereby adjusting the displacement of the positioning pin 222.

[0040] In other embodiments, reference Figure 3 As shown, the positioning pin assembly 22 further includes a first gasket 225, which is disposed between the positioning pin 222 and the limiting block 223, and the thickness of the gasket is increased or decreased to limit the positioning pin 222. The first gasket 225 is disposed between the first limiting block 2231 and the positioning pin 222, and between the second limiting block 2232 and the positioning pin 222. A plurality of first gaskets 225 may be provided, each having the same or different thicknesses. The first gasket 225 of corresponding thickness is selected to fill the space between the limiting block 223 and the positioning pin 222 according to the distance adjustment required, thereby enabling the positioning pin 222 to be adjusted more accurately.

[0041] In some embodiments, reference Figure 3 As shown, the positioning pin assembly 22 also includes a second gasket 226, which is arranged between the positioning pin 222 and the mounting seat 221. The displacement of the positioning pin 222 in the first direction X1 is adjusted by increasing or decreasing the thickness of the gasket. The second gasket 226 corresponds to the shape of the bottom surface of the positioning pin 222, so as to be able to fully contact the base of the positioning pin 222. A plurality of second gaskets 226 can be provided, each of which has the same or different thicknesses. The second gasket 226 of corresponding thickness is selected to fill the space between the limit block 223 and the positioning pin 222 according to the distance adjustment required.

[0042] In some embodiments, the first gasket 225 and the second gasket 226 are standard two-hole fixture adjustment gaskets with an adjustment range of 5 mm. The first gasket 225 is made of a steel plate of common thickness after laser cutting and blackening, and can be cut into different thicknesses or the same thickness according to actual needs.

[0043] In some embodiments, reference Figure 4 As shown, the support seat 21 includes a bottom plate 211 and a support bracket 212. The bottom plate 211 is arranged on the measuring platform 10, the support bracket 212 is arranged on the bottom plate 211 and extends along the first direction X1, and the positioning pin assembly 22 is arranged on the side of the support bracket 212 away from the bottom plate 211. Each support seat 21 is correspondingly provided with a positioning pin 222, and a plurality of support seats 21 can be provided. Each support seat 21 corresponds to a positioning hole 11 of the body-in-white. When coarse adjustment is performed, the bottom plate 211 can be moved on the measuring platform 10 to change the position of the support seat 21 on the measuring platform 10.

[0044] In some embodiments, reference Figure 5 As shown, the support bracket 212 includes a support column 2121 and a support rib 2122. The support column 2121 is extended along the first direction X1, and the support column 2121 is arranged on the bottom plate 211. A positioning pin assembly 22 is provided on the side of the support column 2121 away from the bottom plate 211; the support rib 2122 is arranged on the circumferential side of the support column 2121, and the support rib 2122 is connected to the bottom plate 211, and the support column 2121 is movably arranged between the support ribs 2122. The support column 2121 is moved in the first direction X1 to make it close to or away from the bottom plate 211, and the support column 2121 is fixed by the support rib 2122 to adjust the displacement of the positioning pin assembly 22 in the first direction X1. There is one support column 2121, which is made of a 500mm long 120*120 aluminum square tube. There are multiple support ribs 2122, specifically four support ribs 2122. The support rib 2122 is machined from a 20mm thick aluminum plate, and threaded holes are processed on the bottom and sides for connecting the support column 2121 and the base plate 211. The width of the support rib 2122 gradually decreases from the side close to the base plate 211 to the side away from the base plate 211, and the height of the support rib 2122 is approximately the same as the height of the support column 2121.

[0045] In some embodiments, the upper end surface of the support column 2121 is processed with multiple M8 screw holes for connecting to the mounting base 221, and the lower end surface of the support column 2121 is processed with multiple M8 screw holes for connecting to the base plate 211. The material of the support column 2121 is aluminum, which has the advantages of corrosion resistance and light weight.

[0046] In some embodiments, reference Figure 6As shown, the support column 2121 is provided with a groove 21211 along the first direction X1, and the groove 21211 is provided with a notch at least on one side facing the positioning pin 222; the measuring device includes a connecting assembly 30, and the connecting assembly 30 includes a connecting member (not shown in the figure) and a connecting seat 31, and the connecting seat 31 is arranged in the groove 21211, and the connecting member passes through the mounting seat 221 and is connected to the connecting seat 31. A plurality of grooves 21211 can be arranged on the side of the support column 2121, and a plurality of connecting seats (specifically M8T-type nuts) are arranged in the groove 21211. After the connecting seat is inserted into the groove 21211, it can limit its rotation in the groove 21211, and the connecting member (specifically M8T-type bolt) can be passed through the support column 2121 and the support rib 2122, and the bolt is threadedly connected with the nut, thereby connecting the support column 2121 and the support rib 2122.

[0047] In some embodiments, reference Figure 7 As shown, the support bracket 212 includes a connecting block 2123, which is arranged between the support rib 2122 and the support column 2121, and the connecting block 2123 is fixedly connected to the support rib 2122; the measuring device also includes a second locking member (not shown in the figure), which passes through the connecting block 2123 and the support column 2121, and the second locking member (not shown in the figure) is loosened or locked to allow the support column 2121 to move or be fixed in the first direction X1. The connecting block 2123 is machined from a 20mm thick aluminum profile plate, and multiple M9 through holes and multiple M9 countersunk holes are machined in the middle. The M9 through holes are used to connect the reinforcing ribs, and the M9 countersunk holes are used to connect the support column 2121. The first locking member 224 is a bolt corresponding to the M9 hole, so as to achieve a stable connection effect and have better connection strength.

[0048] In some embodiments, reference Figure 8 As shown, the measuring platform 10 is provided with a plurality of positioning holes 11; the bottom plate 211 is provided with a positioning groove 2111, the positioning groove 2111 includes a first positioning groove 21111 arranged along the second direction X2 and a second positioning groove 21112 arranged along the third direction X3, and the first positioning groove 21111 and the second positioning groove 21112 intersect; the measuring device includes a positioning member 40, the positioning member 40 passes through the positioning groove 2111 along the first direction X1 and is inserted into the positioning hole 11, the positioning member 40 is threadedly connected to the positioning hole 11, the positioning member 40 is rotated to loosen and lock the bottom plate 211 and the measuring platform 10, and the positioning member 40 moves in the positioning groove 2111 to be able to adjust the displacement of the bottom plate 211 in the first direction X1 or the second direction X2.

[0049] The present application also provides a measuring device, including a measuring apparatus, which can cooperate with a measuring platform 10 and a measuring support 20 for coarse adjustment and fine adjustment, so as to adapt to the white body of different models and improve its scope of application.

[0050] In this application, unless otherwise clearly specified and limited, the terms "disposed (provided with)", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; 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. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] In the description of this specification, the description of reference terms such as "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment are included in at least one embodiment of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0052] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent of this application.

Claims

1. A measuring device, characterized in that: include: Measuring platform; A measuring support, the measuring support includes a supporting seat and a positioning pin assembly, the supporting seat is movably arranged on the measuring platform, the positioning pin assembly is arranged on the supporting seat, the positioning pin assembly includes a mounting seat, a positioning pin, a limit block, and a first locking piece, the positioning pin is arranged on the mounting seat and extends in a first direction, at least one limit block is arranged on the peripheral side of the positioning pin, the limit block is connected to the mounting seat and protrudes in the first direction, the mounting seat is provided with a locking hole, the first locking piece passes through the positioning pin and is inserted into the locking hole, the diameter of the first locking piece is smaller than the aperture of the locking hole, the positioning pin is moved to cause the first locking piece to be displaced in the locking hole, thereby adjusting the positioning pin, increasing or decreasing the thickness of the limit block to limit the positioning pin, and fixing the first locking piece after limiting the positioning pin.

2. The measuring device according to claim 1, characterized in that The limit block includes a first limit block and a second limit block, the first limit block is located on the peripheral side of the positioning pin in the second direction, and the second limit block is located on the peripheral side of the positioning pin in the third direction, and the first direction, the second direction, and the third direction are perpendicular to each other.

3. The measuring device according to claim 1, characterized in that The positioning pin assembly also includes a first gasket, which is arranged between the positioning pin and the limiting block, and the thickness of the gasket is increased or decreased to limit the positioning pin.

4. The measuring device according to claim 1, characterized in that The positioning pin assembly also includes a second gasket, which is arranged between the positioning pin and the mounting seat. The thickness of the gasket is increased or decreased to adjust the displacement of the positioning pin in the first direction.

5. The measuring device according to claim 1, characterized in that The support seat includes a base plate and a support bracket, the base plate is arranged on the measuring platform, the support bracket is arranged on the base plate and extends along the first direction, and the positioning pin assembly is arranged on a side of the support bracket away from the base plate.

6. The measuring device according to claim 5, characterized in that The support bracket comprises: A support column, the support column is extended along the first direction, the support column is arranged on the bottom plate, and the positioning pin assembly is arranged on a side of the support column away from the bottom plate; The support ribs are arranged on the circumferential side of the support column, and the support ribs are connected to the base plate. The support column is movably arranged between the support ribs. The support column is moved in the first direction to be close to or away from the base plate, and the support column is fixed by the support ribs to adjust the displacement of the positioning pin assembly in the first direction.

7. The measuring device according to claim 6, characterized in that The support column is provided with a groove along the first direction, and the groove is provided with a notch at least on one side facing the positioning pin; The measuring device comprises a connecting assembly, and the connecting assembly comprises a connecting member and a connecting seat. The connecting seat is arranged in the groove, and the connecting member passes through the mounting seat and is connected to the connecting seat.

8. The measuring device according to claim 7, characterized in that The support bracket includes a connecting block, the connecting block is arranged between the supporting rib and the supporting column, and the connecting block is fixedly connected to the supporting rib; The measuring device further comprises a second locking member, which passes through the connecting block and the supporting column. The second locking member is released or locked to enable the supporting column to move or be fixed in the first direction.

9. The measuring device according to claim 5, characterized in that The measuring platform is provided with a plurality of positioning holes; The bottom plate is provided with positioning grooves, the positioning grooves include a first positioning groove arranged along the second direction and a second positioning groove arranged along the third direction, and the first positioning groove and the second positioning groove intersect; The measuring device includes a positioning member, which is inserted into the positioning hole through the positioning groove along a first direction. The positioning member is threadedly connected to the positioning hole. The positioning member is rotated to loosen and lock the base plate and the measuring platform. The positioning member moves in the positioning groove to adjust the displacement of the base plate in the first direction or the second direction.

10. A measuring device, characterized in that: A measuring device comprising any one of claims 1 to 9.

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