Positioning and fixing device and detection platform

Abstract

The utility model relates to a positioning and fixing device and a detection platform, switching of the detection platform between a positioning working condition and a limiting working condition is realized by utilizing switching of a limiting connecting piece between a first limiting position and a second limiting position, and due to the fact that the limiting connecting piece is switched between the limiting positions, the detection platform can be switched between the positioning working condition and the limiting working condition. The position of the limiting connecting piece can be directly adjusted without using an external measuring tool to measure and judge the position of the limiting connecting piece, and the working condition of the current detection platform can be judged according to the position; similarly, the detection platform can be switched between the transfer working condition and the non-transfer working condition by switching the locking piece between the third limit position and the non-limit position, the transfer working condition can be switched by directly adjusting the position of the locking piece without the help of an external measuring tool, the installation and adjustment process of the detection platform can be simplified, and the installation and adjustment efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of workpiece inspection technology, and in particular to a positioning and fixing device and an inspection platform. Background Technology

[0002] The workpiece inspection platform mainly consists of a base plate and a base, with a vibration damper installed between them. This damper supports the base plate. When the vibration damper is working, it supports the base plate and lifts it to a certain height. When not in operation, the base plate falls. This means there is a certain amount of relative movement between the base plate and the base, which can easily lead to relative displacement, detachment, and damage during equipment assembly and transportation, affecting the safety of equipment assembly and transportation.

[0003] Therefore, in related technologies, a workpiece stage testing platform has been proposed, which uses a locking component to achieve the positioning and locking of the workpiece stage testing platform, so as to adapt to the different functions required by the workpiece stage testing platform under different working conditions.

[0004] However, since most of the locking components in the relevant technologies are hidden in the base and substrate, it is impossible to directly determine the specific position of the locking components relative to the base. It is necessary to use measuring tools to detect the position of the locking components in order to determine the current installation and adjustment status of the locking components. The installation and adjustment process is cumbersome and is not conducive to improving work efficiency and reducing labor intensity. Utility Model Content

[0005] This application provides a positioning and fixing device and a testing platform, which can simplify the assembly and adjustment process of the base and substrate of the testing platform under different working conditions, improve the assembly and adjustment efficiency, and at least partially solve the above-mentioned technical problems.

[0006] To achieve the above objectives, according to a first aspect of this application, a positioning and fixing device is provided for connecting a base and a substrate in a testing platform, the positioning and fixing device comprising:

[0007] A positioning connector for inserting into the base and the substrate;

[0008] A limiting connector, sleeved on the positioning connector and switchable between a first extreme position and a second extreme position; and

[0009] A locking element is fitted onto the positioning connector and can be switched between the third extreme position and the target position;

[0010] Specifically, the limiting connector switches to the first extreme position so that the detection platform is in the positioning condition; the limiting connector switches to the second extreme position and the locking member switches to the target position so that the detection platform is in the limiting condition; the limiting connector switches to the second extreme position and the locking member switches to the third extreme position so that the detection platform is in the transport condition.

[0011] Optionally, the positioning connector is used to insert into the first positioning hole of the base and the second positioning hole of the substrate;

[0012] At the first extreme position, the limiting connector is inserted into the first positioning hole and the second positioning hole;

[0013] In the second extreme position, the limiting connector exits the first positioning hole and is inserted into the second positioning hole, and the end of the limiting connector away from the base abuts against the end of the positioning connector away from the base;

[0014] In the third extreme position, the locking member abuts against the side of the substrate away from the base.

[0015] Optionally, the positioning connector includes a first threaded segment for passing through the second positioning hole and being threadedly connected to the first positioning hole.

[0016] Optionally, the positioning connector includes a second threaded segment, the limiting connector has a sleeve hole, the positioning connector passes through the sleeve hole, the sleeve hole has an internal thread, and the second threaded segment is threadedly connected to the internal thread.

[0017] Optionally, the positioning connector further includes a first optical axis segment, the diameter of which is smaller than the diameter of the sleeve hole.

[0018] Optionally, the positioning connector further includes a second optical axis segment connected between the first optical axis segment and the second threaded segment, wherein the diameter of the second optical axis segment is smaller than the diameter of the first optical axis segment.

[0019] Optionally, the limiting connector includes an external thread section, which is threadedly connected to the locking member so that the locking member can move along the axial direction of the limiting connector.

[0020] Optionally, the limiting connector further includes a positioning section, which is connected to the external thread section. One end of the positioning section away from the external thread section is sleeved on the outside of the positioning connector and used to insert into or exit the first positioning hole.

[0021] Optionally, the surface of the substrate away from the base is provided with a limiting groove, and the locking member is provided with a protrusion on one side of the substrate, the protrusion being used to limit and cooperate with the limiting groove.

[0022] Optionally, one end of the positioning connector is provided with a force-bearing head, and one end of the limiting connector is provided with a limiting head. When the limiting connector is in the second extreme position, the force-bearing head abuts against the limiting head.

[0023] Optionally, a force-applying hole is provided on one side of the force-receiving head.

[0024] According to a second aspect of this application, a testing platform is also provided, the testing platform having positioning conditions, limiting conditions, and transfer conditions, the testing platform comprising:

[0025] Base;

[0026] Substrate; and

[0027] As described in the first aspect, the base and the substrate are connected by the positioning and fixing device, and the detection platform can be switched between the positioning condition, the limiting condition and the transfer condition by the positioning and fixing device.

[0028] Optionally, there are multiple first positioning holes, multiple second positioning holes, and multiple positioning and fixing devices. The number of the first positioning holes, the second positioning holes, and the positioning and fixing devices are the same and correspond one-to-one.

[0029] Optionally, a portion of the first positioning holes are oblong holes and / or U-shaped holes with an opening on one side, while another portion of the first positioning holes are circular holes.

[0030] The positioning and fixing device provided in this application embodiment can effectively realize the positioning of the base and the substrate in the positioning condition, the limiting condition in the limiting condition, and the locking condition in the transfer condition by using positioning connectors, limiting connectors and locking components.

[0031] By utilizing the switching between the first and second extreme positions of the limiting connector, the testing platform can switch between positioning and limiting modes. Since the switching between the limiting connectors is based on extreme positions, there is no need to use external measuring tools to measure and determine the position of the limiting connectors. The position of the limiting connectors can be directly adjusted, and the current working condition of the testing platform can be determined based on the position. Similarly, by using the switching between the third extreme position and non-extreme positions of the locking component, the testing platform can switch between transport and non-transport working conditions. This also does not require external measuring tools; the transport working condition can be switched directly by adjusting the position of the locking component. This simplifies the assembly and adjustment process of the testing platform and improves assembly and adjustment efficiency.

[0032] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0035] Figure 1 This is a three-dimensional structural diagram of the detection platform provided in an exemplary embodiment of this disclosure;

[0036] Figure 2 This is a top view schematic diagram of the detection platform provided in an exemplary embodiment of this disclosure;

[0037] Figure 3 This is a schematic diagram of the structure of the first positioning hole of different shapes in the detection platform provided in the exemplary embodiments of this disclosure;

[0038] Figure 4 This is a three-dimensional structural diagram of the positioning and fixing device provided in an exemplary embodiment of this disclosure;

[0039] Figure 5 This is a cross-sectional schematic diagram of the positioning and fixing device provided in the exemplary embodiment of this disclosure in the positioning working condition;

[0040] Figure 6 This is a cross-sectional schematic diagram of the positioning and fixing device provided in the exemplary embodiment of this disclosure in the limiting working condition;

[0041] Figure 7 This is a cross-sectional schematic diagram of the positioning and fixing device provided in the exemplary embodiment of this disclosure in the transfer condition;

[0042] Figure 8 This is a schematic diagram of the structure of the positioning connector in the positioning and fixing device provided in the exemplary embodiment of this disclosure;

[0043] Figure 9 This is a schematic diagram of the structure of the limiting connector in the positioning and fixing device provided in the exemplary embodiment of this disclosure.

[0044] Figure 10 This is a schematic diagram of the structure of the locking member in the positioning and fixing device provided in an exemplary embodiment of this disclosure.

[0045] Figure 11 This is a schematic diagram showing the engagement of a circular first positioning hole with a positioning connector in a positioning and fixing device provided in an exemplary embodiment of this disclosure.

[0046] Figure 12 This is a schematic diagram of the first positioning hole in the waist shape cooperating with the positioning connector in the positioning and fixing device provided in the exemplary embodiment of this disclosure;

[0047] Figure 13 This is a schematic diagram showing the first positioning hole of the U-shape cooperating with the positioning connector in the positioning and fixing device provided in the exemplary embodiment of this disclosure;

[0048] Figure 14 This is a schematic diagram of the structure of another positioning and fixing device provided in the exemplary embodiment of this disclosure after the limiting connector is removed during the transfer process.

[0049] Explanation of reference numerals in the attached figures:

[0050] 1. Base; 11. First positioning hole;

[0051] 2. Substrate; 21. Second positioning hole; 22. Limiting groove;

[0052] 3. Vibration damper;

[0053] 4. Positioning and fixing device; 41. Positioning connector; 411. First threaded section; 412. Second threaded section; 413. First optical axis section; 414. Second optical axis section; 415. Force-receiving head; 416. Force-applying hole; 42. Limiting connector; 421. Sleeve hole; 422. External threaded section; 423. Positioning section; 424. Limiting head; 43. Locking component; 431. Protrusion. Detailed Implementation

[0054] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0055] This application provides a testing platform with positioning, limiting, and transport modes. Please refer to [link / reference]. Figures 1 to 3 .

[0056] The testing platform includes a base 1, a base plate 2, and a positioning and fixing device 4. The base 1 and the base plate 2 are connected by the positioning and fixing device 4, which allows the testing platform to switch between positioning, limiting, and transport modes.

[0057] Furthermore, the testing platform also includes a vibration damper 3, which is located below the base plate 2. The vibration damper 3 supports the base plate 2 through the base 1 and uses certain control methods to isolate external vibrations, thus maintaining the stability of other equipment on the testing platform. When the vibration damper 3 is working, it supports the base plate 2 and lifts it to a certain height. When not working, the base plate 2 will fall. That is to say, there is a certain amount of relative movement between the base plate 2 and the base 1. By setting a positioning and fixing device 4 near the vibration damper 3, relative displacement, detachment, and damage due to the relative movement between the base plate 2 and the base 1 can be avoided, thus improving the safety of the testing platform assembly and transportation.

[0058] In some embodiments, the positioning and fixing device 4 includes a positioning connector 41, a limiting connector 42, and a locking member 43. The positioning connector 41 is used to insert into the base 1 and the substrate 2. The limiting connector 42 is sleeved on the positioning connector 41 and has a first limit position and a second limit position. The locking member 43 is sleeved on the positioning connector 41 and has a third limit position and a non-limit position.

[0059] The positioning and limiting modes are switched between the first and second extreme positions via the limiting connector 42, while the transfer and non-transfer modes are switched between the non-extreme and third extreme positions via the locking component 43. The non-transfer mode refers to all modes other than the transfer mode, including both the positioning and limiting modes.

[0060] By switching the limiting connector 42 between the first and second extreme positions, the testing platform can switch between positioning and limiting modes. Since the limiting connector 42 switches between extreme positions, there is no need to use external measuring tools to measure and judge the position of the limiting connector 42. The position of the limiting connector 42 can be directly adjusted, and the current working condition of the testing platform can be determined based on the position. Similarly, by switching the locking member 43 between the third extreme position and non-extreme positions, the testing platform can switch between transport and non-transport working conditions. There is also no need to use external measuring tools. The transport working condition can be switched directly by adjusting the position of the locking member 43, which helps to simplify the assembly and adjustment process of the testing platform and improve the assembly and adjustment efficiency.

[0061] Furthermore, when the testing platform is in positioning mode, the limiting connector 42 is in the first extreme position, and the locking component 43 is in the non-extreme position. When the testing platform is in limiting mode, the limiting connector 42 is in the second extreme position, and the locking component 43 is in the non-extreme position. When the testing platform is in transfer mode, the limiting connector 42 is in the second extreme position, and the locking component 43 is in the third extreme position. Switching between the three modes is achieved by placing the limiting connector 42 and the locking component 43 in different extreme positions. No external measuring tools are needed; simply adjusting the corresponding components to their respective extreme positions simplifies the mode switching process and improves switching efficiency.

[0062] Furthermore, the base 1 has a first positioning hole 11, and the substrate 2 has a second positioning hole 21. The positioning connector 41 is inserted into the first positioning hole 11 and the second positioning hole 21 to achieve initial alignment of the first positioning hole 11 and the second positioning hole 21, thus providing initial positioning and connecting the base 1 and the substrate 2. The first extreme position is when the limiting connector 42 is inserted into the first positioning hole 11 and the second positioning hole 21. In the positioning process, the positioning connector 41 can provide initial positioning. Then, the limiting connector 42 is further inserted into the first positioning hole 11 and the second positioning hole 21 to eliminate some of the alignment deviation of the first positioning hole 11 and the second positioning hole 21 caused by errors, ensuring that the first positioning hole 11 and the second positioning hole 21 are coaxial as much as possible, and achieving precise positioning. The second extreme position is when the limiting connector 42 is withdrawn from the first positioning hole 11 and inserted into the second positioning hole 21, with the end of the limiting connector 42 away from the base 1 abutting against the end of the positioning connector 41 away from the base 1. In the limiting condition, the limiting connector 42 disengages from the first positioning hole 11 to release the degree of freedom of the substrate 2 and the base 1 in the horizontal direction caused by errors. This allows the substrate 2 and the base 1 to move relatively slightly under the action of the vibration damper 3, achieving a vibration reduction effect. Furthermore, to prevent the limiting connector 42 from disengaging from the positioning connector 41, the end of the limiting connector 42 away from the base 1 abuts against the end of the positioning connector 41 away from the base 1. This abutting position is the second extreme position, which can also be used to determine the current operating condition of the testing platform. The third extreme position is when the locking member 43 abuts against the side of the substrate 2 away from the base 1. When the testing platform is in the transport condition, the locking member 43 abuts against the substrate 2 to fix the substrate 2 and the base 1, preventing the base 1 and substrate 2 from falling off or shifting position during the transport process of the testing platform.

[0063] In some embodiments, see Figures 4 to 10The positioning connector 41 is used to sequentially insert into the first positioning hole 11 and the second positioning hole 21 to connect the base 1 and the substrate 2 and to initially align the first positioning hole 11 and the second positioning hole 21. Inserting the positioning connector 41 into the first positioning hole 11 and the second positioning hole 21 allows for initial alignment of the first positioning hole 11 and the second positioning hole 21 using the structure of the positioning connector 41. A limiting connector 42 is sleeved on the surface of the positioning connector 41 and can move along the axial direction of the positioning connector 41, allowing the limiting connector 42 to be inserted into or withdrawn from the first positioning hole 11 and abut against the end of the positioning connector 41 away from the connection with the base 1. The first extreme position is when the limiting connector 42 is inserted into the first positioning hole 11 and the second positioning hole 21. Inserting the limiting connector 42 into the first positioning hole 11 further improves the alignment effect of the first positioning hole 11 and the second positioning hole 21, reduces errors, and improves the positioning effect. The second extreme position is where the limiting connector 42 exits the first positioning hole 11 and inserts into the second positioning hole 21, with the end of the limiting connector 42 away from the base 1 abutting against the end of the positioning connector 41 away from the base 1. For example, after positioning is completed, the limiting connector 42 is exited from the first positioning hole 11 to release the horizontal freedom of the substrate 2 and the base 1, allowing the base 1 and substrate 2 to wobble with a certain margin under the action of the vibration damper 3. The third extreme position is where the locking member 43 abuts against the side of the substrate away from the base 1. For example, the locking member 43 is sleeved on the surface of the limiting connector 42 and can move along the axial direction of the limiting connector 42, so that the locking member 43 can abut against the surface of the substrate 2 away from the base 1. By abutting the locking member 43 against the surface of the substrate 2 away from the base 1, it is beneficial to secure the substrate 2 and the base 1, thus reducing the risk of the base 1 and substrate 2 falling off during transport.

[0064] The following is a detailed explanation of the specific working process of the positioning and fixing device 4 when the detection platform is in positioning mode, limiting mode, and transfer mode:

[0065] In some embodiments, when the detection platform is in positioning mode, the positioning connector 41 is connected to the first positioning hole 11 and the second positioning hole 21 to initially align the first positioning hole 11 and the second positioning hole 21. The limiting connector 42 is sleeved on the positioning connector 41 and connected to the first positioning hole 11 and the second positioning hole 21 to make the first positioning hole 11 and the second positioning hole 21 coaxial. The locking member 43 is sleeved on the end of the limiting connector 42 away from the first positioning hole 11 and spaced apart from the substrate 2. By inserting the positioning connector 41 into the first positioning hole 11 and the second positioning hole 21, the positioning connector 41 can be used to align the first positioning hole 11 and the second positioning hole 21, achieving initial positioning. Then, by connecting the limiting connector 42 to the first positioning hole 11 and the second positioning hole 21, the first positioning hole 11 and the second positioning hole 21 are further aligned and error gaps are eliminated as much as possible, making the first positioning hole 11 and the second positioning hole 21 coaxial. Furthermore, by using a locking member 43 sleeved on the end of the limiting connector 42 away from the first positioning hole 11 and spaced apart from the base plate 2, the locking member 43 will not interfere with the positioning function of the positioning connector 41 and the limiting connector 42 on the two positioning holes, and the locking member 43 can indicate to the staff what working condition the current testing platform is in.

[0066] When the detection platform is in the limiting condition, the positioning connector 41 is connected to the first positioning hole 11 and the second positioning hole 21. The limiting connector 42 is inserted into the second positioning hole 21, and the end of the limiting connector 42 located outside the second positioning hole 21 abuts against the end of the positioning connector 41 located outside the second positioning hole 21, so that the base 1 and the base plate 2 have an error margin in the direction perpendicular to the axial direction of the positioning connector 41. The locking member 43 is sleeved on the end of the limiting connector 42 away from the first positioning hole 11 and spaced apart from the base plate 2. By removing the limiting connector 42 from the first positioning hole 11, the error margin of the base 1 and the base plate 2 in the direction perpendicular to the axial direction of the positioning connector 41 is released, that is, the error margin in the horizontal direction, so that the base 1 and the base plate 2 can have a certain degree of freedom of movement in the horizontal direction, so that the base plate 2 and the base 1 can be adjusted in the horizontal direction under the action of the vibration damper 3. Furthermore, by fitting the locking member 43 onto the end of the limiting connector 42 away from the first positioning hole 11 and spaced apart from the base plate 2, and considering the current positions of the limiting connector 42 and the locking member 43, it can be determined that the current detection platform is in a limiting working condition. At this time, the end of the limiting connector 42 away from the first positioning hole 11 abuts against the end of the positioning connector 41 away from the first positioning hole 11.

[0067] When the testing platform is in transit mode, the positioning connector 41 is connected to the first positioning hole 11 and the second positioning hole 21, the limiting connector 42 is connected to the second positioning hole 21, and the end of the limiting connector 42 away from the second positioning hole 21 abuts against the end of the positioning connector 41 away from the second positioning hole 21. The locking member 43 is sleeved on the end of the limiting connector 42 away from the first positioning hole 11 and abuts against the base plate 2. By abutting the end of the limiting connector 42 and the positioning connector 41 away from the second positioning hole 21, and by abutting the locking member 43 against the base plate 2, the operator can determine that the testing platform is in transit mode. Furthermore, the locking member 43, sleeved on the end of the limiting connector 42 away from the first positioning hole 11 and abutting against the base plate 2, further serves to fix the base plate 2 and the base 1.

[0068] In some embodiments, see Figure 3 and Figure 13 Multiple first positioning holes 11, multiple second positioning holes 21, and multiple positioning fixing devices 4 are provided. The number of first positioning holes 11, second positioning holes 21, and positioning fixing devices 4 are the same and correspond one-to-one. Some of the first positioning holes 11 are oblong holes and / or U-shaped holes with an opening on one side, while others are circular holes. By utilizing multiple first positioning holes 11 of different shapes, the positioning connector 41 has different degrees of freedom in the first positioning holes 11 of different shapes, thereby improving the adaptability and convenience of positioning. For example, in this embodiment, there are three first positioning holes 11, and correspondingly, there are also three second positioning holes 21 and three positioning fixing devices 4. One of the first positioning holes 11 is oblong, one is U-shaped, and one is circular. The radius of the arc portion of the oblong hole and the radius of the arc portion of the U-shaped hole are the same as the radius of the circular hole, and the diameter of the circular hole is equal to the diameter of the portion of the positioning connector 41 inserted into the circular hole.

[0069] Furthermore, the line connecting the three first positioning holes 11 forms a triangle, which helps to reduce the number of positioning holes and positioning fixing devices 4 as much as possible, while also utilizing the stable characteristics of the triangle structure to improve the stability of the connection between the base 1 and the substrate 2.

[0070] Furthermore, the long axis of the oblong hole is parallel to the line connecting the oblong hole and the circular hole to improve the positioning effect.

[0071] In some embodiments, see Figure 8 The positioning connector 41 includes a first threaded section 411 for passing through the second positioning hole 21 and being threadedly connected to the first positioning hole 11, so that the positioning connector 41 can be threadedly connected to the base 1 and simultaneously pass through the first positioning hole 11 and the second positioning hole 21, which is beneficial to improving the positioning effect of the base 1 and the substrate 2.

[0072] In some embodiments, the positioning connector 41 includes a second threaded segment 412, which is disposed opposite to the first threaded segment 411, such that the second threaded segment 412 is located within the second positioning hole 21. The limiting connector 42 has a sleeve hole 421, which is a through hole penetrating the limiting connector 42, so that the positioning connector 41 can pass through the limiting connector 42. The positioning connector 41 is disposed within the sleeve hole 421 and extends to both sides of the sleeve hole 421. The sleeve hole 421 has an internal thread, so that the second threaded segment 412 is threadedly connected to the sleeve hole 421, and also cooperates with the threaded connection of the first threaded segment 411 and the first positioning hole 11, so that both the positioning connector 41 and the limiting connector 42 can be fixed in the first positioning hole 11 and the second positioning hole 21. Furthermore, the internal thread of the second threaded section 412 engages with the internal thread of the limiting connector 42, enabling the limiting connector 42 to be screwed out of the first positioning hole 11 without disengaging from the positioning connector 41, thereby achieving the switching between the positioning mode and the limiting mode of the detection platform.

[0073] Furthermore, the positioning connector 41 also includes a first optical axis section 413. The first optical axis section 413 is disposed between the first threaded section 411 and the second threaded section 412, and the diameter of the first optical axis section 413 is smaller than the diameter of the sleeve hole 421, so that the first optical axis section 413 can extend into the sleeve hole 421 and move freely.

[0074] Furthermore, the positioning connector 41 also includes a second optical axis section 414 connected between the first optical axis section 413 and the second threaded section 412. The diameter of the second optical axis section 414 is smaller than the diameter of the first optical axis section 413, so that there is a gap between the second optical axis section 414 and the inner wall of the sleeve hole 421, which facilitates the relative movement of the limiting connector 42 and the positioning connector 41.

[0075] In some embodiments, see Figure 9 The limiting connector 42 includes an external threaded section 422, which is threadedly connected to a locking member 43, allowing the locking member 43 to move axially along the limiting connector 42. The external threaded section 422 and the internal threaded section belong to the same segment of the limiting connector 42, except that the external threaded section 422 is located on the surface of the limiting connector 42, while the internal threaded section is located on the inner wall of the sleeve hole 421. The external threaded section 422 and the locking member 43 are threadedly engaged, allowing the locking member 43 to be detachably fitted onto the external threaded section 422. The locking member 43 can move axially through the threads on the external threaded section 422, enabling switching between limiting and transport modes. Furthermore, operators can directly determine the current operating condition of the testing platform by observing the position of the locking member 43.

[0076] In some embodiments, the limiting connector 42 further includes a positioning segment 423. The positioning segment 423 is connected to the external thread segment 422, and one end of the positioning segment 423 away from the external thread segment 422 is fitted with the positioning connector 41 and used for insertion into or withdrawal from the first positioning hole 11. The diameter of the first positioning hole 11 is equal to the diameter of the positioning segment 423, so that when the positioning segment 423 is inserted into the first positioning hole 11, it can position the base 1 and the substrate 2 by applying a force to the first positioning hole 11, making the first positioning hole 11 and the second positioning hole 21 coaxial.

[0077] In some embodiments, see Figure 10 The substrate 2 has a limiting groove 22 on its surface away from the base 1. The locking member 43 has a protrusion 431 on its side that abuts against the substrate 2, which engages with the limiting groove 22 for positioning. For example, when the detection platform is in transit mode, the locking member 43 is threaded through its external thread section 422 until it abuts against the substrate 2, thus securing the substrate 2 and the base 1. Furthermore, when the locking member 43 abuts against the substrate 2, the protrusion 431 of the locking member 43 inserts into the limiting groove 22 to restrict relative displacement of the locking member 43 on the surface of the substrate 2.

[0078] In some embodiments, see Figures 5 to 7 The positioning connector 41 has a force-bearing head 415 at the end away from the insertion into the first positioning hole 11, and the limiting connector 42 has a limiting head 424 at the end away from the insertion into the second positioning hole 21. The force-bearing head 415 can abut against the limiting head 424 to constrain the movement of the limiting connector 42 in the axial direction and prevent the limiting connector 42 from falling directly off the positioning connector 41. The abutment between the limiting connector 42 and the positioning connector 41 can also be used to determine that the current detection platform is in a limiting working condition. No external measuring tools are needed; the limiting connector 42 can be rotated to abut against the positioning connector 41 through threaded engagement.

[0079] It should be noted that, in order to facilitate the threaded rotation of the positioning connector 41, the limiting connector 42, and the locking member 43, the outer contours of the force-bearing head 415 of the positioning connector 41, the limiting head 424 of the limiting connector 42, and the locking member 43 can all be set to shapes that are easy for external tools to tighten, such as the hexagonal head of a hexagonal bolt, or other shapes.

[0080] Furthermore, a force-applying hole 416 can be formed on the side of the force-receiving head 415 for connecting a disassembly / assembly tool to apply disassembly / assembly force to the force-receiving head 415. For example, a rigid rod is used, which is inserted into the force-applying hole 416, and then a force is applied to the rod to rotate around the force-receiving head 415. By increasing the torque, the rotation of the positioning connector 41 is achieved with less effort.

[0081] In another embodiment, please refer to Figure 14 The limiting connector 42 is threadedly sleeved with the positioning connector 41, and the locking member 43 is threadedly sleeved on the positioning connector 41. During the positioning and limiting states, the positioning connector 41, the limiting connector 42, and the locking member 43 are the same as in the previous embodiments, except that the locking member 43 is connected to the positioning connector 41. When switching from the limiting state to the transfer state, this embodiment differs slightly from the previous embodiments. In this embodiment, the limiting connector 42 is removed from the positioning connector 41, and then the locking member 43 is directly screwed on, causing the locking member 43 to abut against the surface of the substrate 2.

[0082] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0083] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0084] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0085] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0086] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A positioning fixture for connecting a base (1) and a substrate (2) in a detection platform, characterized in that, The positioning fixing device (4) comprises: a positioning connector (41) for insertion into the base (1) and the base plate (2); a limiting connector (42) sleeved on the positioning connector (41) and switchable between a first limit position and a second limit position; and a locking member (43) sleeved on the positioning connector (41) and switchable between a third limit position and a target position; wherein the limiting connector (42) is switched to the first limit position so that the detection platform is in a positioning working condition; the limiting connector (42) is switched to the second limit position and the locking member (43) is switched to the target position so that the detection platform is in a limiting working condition; the limiting connector (42) is switched to the second limit position and the locking member (43) is switched to the third limit position so that the detection platform is in a transfer working condition.

2. The positioning fixture of claim 1, wherein The positioning connector (41) is used for insertion into a first positioning hole (11) of the base (1) and a second positioning hole (21) of the base plate (2); In the first limit position, the limiting connector (42) is inserted into the first positioning hole (11) and the second positioning hole (21); In the second limit position, the limiting connector (42) exits the first positioning hole (11) and is inserted into the second positioning hole (21), and an end of the limiting connector (42) away from the base (1) abuts against an end of the positioning connector (41) away from the base (1); In the third limit position, the locking member (43) abuts against a side of the base plate (2) away from the base (1).

3. The positioning fixture of claim 2, wherein The positioning connector (41) comprises a first threaded segment (411) for penetrating through the second positioning hole (21) and being threadedly connected with the first positioning hole (11).

4. The positioning fixture of claim 2, wherein The positioning connector (41) comprises a second threaded segment (412), the limiting connector (42) is provided with a sleeve hole (421), the positioning connector (41) penetrates through the sleeve hole (421), an internal thread is arranged in the sleeve hole (421), and the second threaded segment (412) is threadedly connected with the internal thread.

5. The positioning fixture of claim 4, wherein The positioning connector (41) further comprises a first optical axis segment (413) with a diameter smaller than that of the sleeve hole (421).

6. The positioning fixture of claim 5, wherein The positioning connector (41) further comprises a second optical axis segment (414) connected between the first optical axis segment (413) and the second threaded segment (412), and the second optical axis segment (414) has a diameter smaller than that of the first optical axis segment (413).

7. The positioning fixture of claim 2, wherein The limiting connector (42) comprises an external threaded segment (422) threadedly connected with the locking member (43) so that the locking member (43) can move in an axial direction of the limiting connector (42).

8. The positioning fixture of claim 7, wherein The limiting connecting piece (42) further comprises a positioning section (423) connected with the outer threaded section (422), one end of the positioning section (423) away from the outer threaded section (422) is sleeved outside the positioning connecting piece (41) and is used for inserting or withdrawing from the first positioning hole (11).

9. The positioning fixture of claim 2, wherein, The surface of the base plate (2) away from the base (1) is provided with a limiting groove (22), one side of the locking piece (43) used for abutting against the base plate (2) is provided with a protrusion (431), and the protrusion (431) is used for limiting cooperation with the limiting groove (22).

10. The positioning fixture (4) according to claim 2, characterized in that One end of the positioning connecting piece (41) is provided with a force receiving head (415), one end of the limiting connecting piece (42) is provided with a limiting head (424), and when the limiting connecting piece (42) is in the second limit position, the force receiving head (415) abuts against the limiting head (424).

11. The positioning fixture of claim 10, wherein, One side of the force receiving head (415) is provided with a force applying hole (416).

12. A detection platform, characterized in that, The detection platform has a positioning working condition, a limiting working condition and a transfer working condition, and comprises: a base (1); a base plate (2); and The positioning and fixing device (4) according to any one of claims 1 to 11, the base (1) and the base plate (2) are connected through the positioning and fixing device (4), and the detection platform can be switched between the positioning working condition, the limiting working condition and the transfer working condition through the positioning and fixing device (4).

13. The detection platform of claim 12, wherein, The first positioning hole (11) is provided with a plurality of, the second positioning hole (21) is provided with a plurality of, the positioning and fixing device (4) is provided with a plurality of, the number of the first positioning hole (11), the second positioning hole (21) and the positioning and fixing device (4) is same and one-to-one correspondence.

14. The detection platform of claim 13, wherein, A part of the first positioning hole (11) is a waist-shaped hole and / or a U-shaped hole with an opening on one side, and the other part of the first positioning hole (11) is a circular hole.

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