CN220982153U - Detection device - Google Patents

Abstract

The utility model belongs to the technical field of detection of revolving parts, and particularly relates to a detection device. The detection device is used for detecting revolving body parts and comprises a base, a positioning component, a clamping component and a detection component, wherein a supporting surface is arranged on the base, the positioning component is slidably arranged on the supporting surface, the clamping component is arranged on the base, part of the clamping component can move along the direction perpendicular to the supporting surface, the detection component is movably connected with the clamping component, and the detection component can move relative to the supporting surface along the direction parallel to the supporting surface. According to the detection device disclosed by the utility model, the positioning component slides according to the size of the revolving body part and positions the revolving body part, the clamping component clamps the detection component, the detection component can be abutted against the surface of the revolving body part, and the diameter, the roundness and the concentricity can be measured simultaneously due to the sliding characteristic of the positioning component and the moving capability of the detection component relative to the supporting surface, so that the detection efficiency of the revolving body part is improved.

Description

Detection device

Technical Field

The utility model belongs to the technical field of detection of revolving parts, and particularly relates to a detection device.

Background

The rotating parts of the engine comprise a plurality of rotating parts such as shafts, bearings, hole parts and the like, such as a seat ring, a valve and the like, and have extremely high precision requirements. Key indicators of such parts include bore and outer bore diameter, roundness, and bore-to-bore concentricity. In conventional inspection methods, to measure roundness, we generally use a dedicated gauge. In order to detect concentricity, a three-coordinate measuring machine and a platform square box are mainly used. Although these methods are somewhat viable, they all suffer from inefficiency for mass production. Meanwhile, detection errors are particularly easy to occur during manual detection, and operators can also generate errors due to fatigue and insufficient experience, so that the quality of products is further affected.

The prior art mainly relies on a general gauge and a three-coordinate measuring machine to sample points and calculates to determine the size and concentricity of the revolving body type parts. The main problem with this approach is inefficiency, especially when a large number of parts of the revolution type need to be inspected, which requires frequent replacement of the parts, making the inspection process time consuming and laborious.

Disclosure of utility model

The utility model aims to at least solve the problem of how to improve the detection efficiency of revolving body parts. The aim is achieved by the following technical scheme:

The utility model provides a detection device, which is used for detecting revolving body parts and comprises:

The base is provided with a supporting surface;

The positioning component is slidably arranged on the supporting surface;

The clamping assembly is arranged on the base, and part of the clamping assembly can move along the direction perpendicular to the supporting surface;

the detection assembly is movably connected with the clamping assembly and can move relative to the supporting surface along the direction parallel to the supporting surface.

According to the detection device disclosed by the utility model, the revolving body type part can be placed on the supporting surface, the positioning assembly slides according to the size of the revolving body type part and positions the revolving body type part, the clamping assembly clamps the detection assembly, the detection assembly can be abutted with the surface of the revolving body type part, the detection assembly can provide a positioning point for the revolving body type part, and meanwhile, the diameter, roundness and concentricity of the revolving body type part can also be measured. Due to the sliding characteristic of the positioning component and the moving capability of the detection component along the direction parallel to the supporting surface, the detection device can adapt to revolving body parts with various sizes and shapes, can measure the diameter, the roundness and the concentricity at the same time, and improves the detection efficiency of the revolving body parts.

In addition, the detection device according to the present utility model may further have the following additional technical features:

in some embodiments of the present utility model, the positioning assembly includes a first positioning member and a second positioning member, the supporting surface is provided with a first chute and a second chute, an included angle is formed between an extension line of the first chute and an extension line of the second chute, a part of the first positioning member is slidably disposed in the first chute, and a part of the second positioning member is slidably disposed in the second chute.

In some embodiments of the present utility model, a mounting surface is further provided on the base, an included angle is formed between the mounting surface and the supporting surface, and the clamping assembly is connected to the mounting surface.

In some embodiments of the present utility model, the clamping assembly includes a first clamping portion and a second clamping portion, the first clamping portion and the second clamping portion being disposed on the mounting surface at intervals, the detection assembly includes a first dial gauge slidably coupled to the first clamping portion and a second dial gauge rotatably coupled to the second clamping portion.

In some embodiments of the present utility model, the first clamping portion includes a first fixing seat and a first guiding element, the first fixing seat is fixedly disposed on the mounting surface, the first guiding element is slidably disposed on the first fixing seat along a direction perpendicular to the supporting surface, a through hole is formed at an end of the first guiding element above the supporting surface, a part of the first dial indicator passes through the through hole, and the first dial indicator can slide in the through hole along a direction parallel to the supporting surface.

In some embodiments of the present utility model, the second clamping portion includes a second fixing seat and a second guiding element, the second fixing seat is fixedly disposed on the mounting surface, a fixed shaft is disposed on the second fixing seat along a direction perpendicular to the supporting surface, the second guiding element is slidably connected with the fixed shaft, and an end of the second guiding element, which is close to the supporting surface, is connected with the second dial indicator.

In some embodiments of the present utility model, the extending line of the first dial indicator has an included angle with the extending line of the first chute and the extending line of the second chute, respectively.

In some embodiments of the present utility model, the first clamping portion further includes a locking bolt, a connection hole is formed in the first fixing seat, a guide hole is formed in the first guide member, and the locking bolt passes through the guide hole and is screwed with the connection hole.

In some embodiments of the utility model, the angle between the mounting surface and the support surface is 90 °.

In some embodiments of the utility model, the base is prismatic in structure.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

fig. 1 schematically shows a schematic structural view of a first view angle of a detection device according to an embodiment of the present utility model;

Fig. 2 schematically shows a schematic structural view of a detection device according to an embodiment of the present utility model when the detection device is mated with a revolving body-like part;

Fig. 3 schematically shows a schematic structural view of a second view of a detection device according to an embodiment of the present utility model;

Fig. 4 schematically shows a schematic structural view of a third view of a detection device according to an embodiment of the present utility model.

The reference numerals are as follows:

100. A detection device;

10. A base; 11. a support surface; 111. a first chute; 112. a second chute; 12. a mounting surface;

20. a positioning assembly; 21. a first positioning member; 22. a second positioning member;

30. A clamping assembly; 31. a first clamping part; 311. a first fixing seat; 312. a first guide; 3121. a guide hole; 313. a locking bolt; 32. a second clamping portion; 321. the second fixing seat; 322. a second guide; 3221. a guide rod; 3222. a connecting block; 323. a fixed shaft;

40. a detection assembly; 41. a first dial gauge; 42. a second dial gauge;

200. A revolving body type part.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "below," "upper," "above," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Accordingly, the example term "below … …" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

As shown in fig. 1 to 4, according to an embodiment of the present utility model, a detecting device 100 is provided, where the detecting device 100 is used for detecting a revolving part 200, and includes a base 10, a positioning component 20, a clamping component 30, and a detecting component 40, where the base 10 is provided with a supporting surface 11, the positioning component 20 is slidably supported on the supporting surface 11, the clamping component 30 is provided on the base 10, a part of the clamping component 30 can move along a direction perpendicular to the supporting surface 11, the detecting component 40 is movably connected to the clamping component 30, and the detecting component 40 can move relative to the supporting surface 11 along a direction parallel to the supporting surface 11.

According to the detection device 100 of the present utility model, the revolving body part 200 can be placed on the supporting surface 11, the positioning assembly 20 slides according to the size of the revolving body part 200 and positions the revolving body part 200, the clamping assembly 30 clamps the detection assembly 40, the detection assembly 40 can abut against the surface of the revolving body part, the detection assembly 40 can provide a positioning point for the revolving body part 200, and the diameter, roundness and concentricity of the revolving body part 200 can be measured. Due to the sliding characteristics of the positioning assembly 20 and the moving capability of the detecting assembly 40 relative to the supporting surface 11, the detecting device 100 can adapt to revolving body parts 200 with various sizes and shapes, and can measure the diameter, roundness and concentricity simultaneously, thereby improving the detecting efficiency of the revolving body parts.

In some embodiments, the positioning assembly 20 includes a first positioning member 21 and a second positioning member 22, the supporting surface 11 is provided with a first chute 111 and a second chute 112, an included angle is formed between an extension line of the first chute 111 and an extension line of the second chute 112, a part of the first positioning member 21 is slidably disposed in the first chute 111, and a part of the second positioning member 22 is slidably disposed in the second chute 112. First, the angled design of the first and second runners 111, 112 allows the positioning assembly 20 to provide support at different angles, which is more conducive to accommodating differently shaped rotator-like parts 200, increasing the flexibility of the inspection apparatus 100. Secondly, through two setting elements sliding along different directions, can disperse the holding power more evenly, reduce the maloperation or the slope of part in the measurement process, improved measuring stability and accuracy. In addition, the slidable positioning member enables a user to quickly adjust the position of the positioning point or center of rotation according to the specific size and shape of the part being measured, and such a design increases the flexibility and applicability of the detection device 100. Finally, the chute design enables a user to easily adjust the position of the positioning piece, so that the operation flow is simplified, and the operation difficulty is reduced.

It can be appreciated that the first chute 111 or the second chute 112 may be linear or track-customized (e.g. circular arc or other shapes) to meet the positioning requirements of different parts. The bottom of the first positioning piece 21 or the second positioning piece 22 is provided with a sliding structure matched with the shape of the chute, and the sliding structure can be a wheel type structure, a sliding block type structure or other suitable structures. The sliding structure should allow the positioning member to move smoothly on the chute while being able to withstand the pressure in the direction perpendicular to the chute. The positioning piece is provided with a precise screw rod or a fine adjustment knob, so that a user is allowed to carry out fine adjustment. The fine adjustment mechanism can be built in the positioning piece, and the screw rod is pushed by rotating the knob, so that the positioning piece moves slightly along the sliding groove. The positioning member is provided with a lateral locking screw or a quick locking lever, and once the positioning member is adjusted to a desired position, an operator can tighten the locking screw or press the quick locking lever to fix the positioning member in a specific position on the chute. The two ends of the chute are provided with limiting blocks for preventing the positioning piece from separating from the chute in the adjusting process. The bottom of the retainer or the portion in contact with the chute may be designed with an anti-slip material or structure, such as rubber pads or knurling, to improve stability and safety. And scale marks are engraved beside the sliding groove or a measuring tape is stuck, so that a user can conveniently read the specific position of the positioning piece. Corresponding indication marks are arranged on the positioning piece and correspond to scale marks on the sliding groove, so that a user can accurately read the position information.

Specifically, the first positioning member 21 and the second positioning member 22 have the same structure, and the first chute 111 and the second chute 112 have the same structure, so that the specific structure thereof will be specifically described with the first positioning member 21 and the first chute 111. The first sliding groove 111 is a linear track, and the first positioning piece 21 is a sliding block provided with a ball bearing. The sliding block stably moves on the sliding groove through the ball bearing, a rotary knob is arranged on the side face of the sliding block, the rotary knob is connected with a screw rod, and the screw rod is perpendicular to the sliding block and can advance or retreat in the sliding block along the direction perpendicular to the sliding groove. When the knob rotates, the sliding block moves slightly along the sliding groove, so that fine adjustment is realized. Once adjusted in place, a locking screw next to the knob can be tightened to fix the slider in the current position for measurement. The combination of the stopper and the graduation marks makes the first positioning member 21 both accurate and safe in operation.

Further, the base 10 is further provided with a mounting surface 12, an included angle is formed between the mounting surface 12 and the supporting surface 11, and the clamping assembly 30 is connected with the mounting surface 12. If the clamping assembly 30 is disposed on the supporting surface 11, interference with the revolving body part 200 will be caused, so that the base 10 has a mounting surface 12, and the mounting surface 12 and the supporting surface 11 are disposed at a certain included angle, so that the clamping assembly 30 can more flexibly process parts with various shapes, and the universality of the detection device 100 is improved.

Further, the clamping assembly 30 includes a first clamping portion 31 and a second clamping portion 32, the first clamping portion 31 and the second clamping portion 32 are disposed on the mounting surface 12 at intervals, the detecting assembly 40 includes a first dial indicator 41 and a second dial indicator 42, the first dial indicator 41 is slidably connected to the first clamping portion 31, and the second dial indicator 42 is rotatably connected to the second clamping portion 32. The first dial indicator 41 can be abutted against the surface of the outer hole of the rotary part 200 to measure the diameter, roundness and concentricity of the outer hole of the rotary part 200, and the second dial indicator 42 can rotate, extend into the inner hole of the rotary part 200, be abutted against the surface of the inner hole to measure the diameter, roundness and concentricity of the inner hole of the rotary part 200. Through the first dial indicator 41 on the first clamping part 31 and the second dial indicator 42 on the second clamping part 32, the inner hole and the outer hole of the revolving body part 200 can be measured, the detection efficiency is further improved, and especially, the connection mode of the clamping part and the dial indicator which are easy to adjust in the batch detection process enables a user to quickly set and replace the revolving body part 200, so that the detection time is saved.

Further, the first clamping portion 31 includes a first fixing seat 311 and a first guiding member 312, the first fixing seat 311 is disposed on the mounting surface 12, the first guiding member 312 is slidably disposed on the first fixing seat 311 along a direction perpendicular to the supporting surface 11, a through hole is formed at one end of the first guiding member 312 above the supporting surface 11, a part of the first dial indicator 41 passes through the through hole, and the first dial indicator 41 can slide in the through hole along a direction parallel to the supporting surface 11.

Specifically, the first fixing seat 311 may be welded or fixed on the mounting surface 12 by a bolt, a connection hole is formed in the first fixing seat, a grain is formed in the connection hole, the direction of the connection hole is perpendicular to the direction of the supporting surface 11, a guiding hole 3121 is formed in the first guiding member 312, the direction of the guiding hole 3121 is also perpendicular to the direction of the supporting surface 11, and the guiding hole 3121 and the connection hole are cooperatively arranged. Wherein the first clamping portion 31 further comprises a locking bolt 313, and when the first guide member 312 is adjusted to a proper position, the locking bolt 313 passes through the guide hole 3121 to enter the connecting hole and is matched with the grain to lock the first guide member 312.

Specifically, a locking structure is disposed between the first guide 312 and the first dial indicator 41, for example, a plurality of protrusions are disposed on the first dial indicator 41, and a groove is disposed in the through hole of the first guide 312, where the protrusions are made of an elastic material, such as rubber. When the stress reaches a certain degree, the protrusions can be separated from the grooves, so that the protrusions which are required to be matched can be adjusted according to the required length.

Further, the second clamping portion 32 includes a second fixing base 321 and a second guiding member 322, the second fixing base 321 is disposed on the mounting surface 12, a fixing shaft 323 is disposed on the second fixing base 321 along a direction perpendicular to the supporting surface 11, the second guiding member 322 is slidably connected with the fixing shaft 323, and an end of the second guiding member 322 close to the supporting surface 11 is connected with the second dial indicator 42.

Specifically, the second guide member 322 includes a guide rod 3221 and a connection block 3222, the connection block 3222 is provided with two through holes, one through hole is in clearance fit with the fixed shaft 323, the other through hole is in clearance fit with the guide rod 3221, the through hole in clearance fit with the fixed shaft 323 can adjust the height of the connection block 3222 along the direction perpendicular to the supporting surface 11, the through hole matched with the guide rod 3221 enables the guide rod 3221 to move in the plane direction parallel to the supporting surface 11, and the height can be adjusted according to the size of the revolving body part 200.

Specifically, the second dial indicator 42 is rotatably connected to the end of the guide rod 3221 near the support surface 11. The second dial indicator 42 is connected to the guide rod 3221 by a swivel joint. The swivel joint may include a ball joint or universal joint to enable the second dial gauge 42 to rotate and angle in multiple directions. The swivel joint should include a locking means, such as a screw lock, friction lock or spring loaded pin, to lock the position of the second dial indicator 42 after adjustment to the appropriate angle.

In some embodiments, the extending lines of the first dial indicator 41 and the extending lines of the first chute 111 and the second chute 112 respectively have included angles therebetween. According to the embodiment, the first dial indicator 41, the first positioning piece 21 and the second positioning piece 22 form a triangle (namely a three-point positioning method) when the rotary part 200 is positioned, the triangle is an extremely stable structure, the rotary part 200 can be more stable in detection by using the triangle layout, and measurement errors are reduced.

In some embodiments, the angle between the mounting surface 12 and the support surface 11 is 90 °. By mounting the clamp assembly 30 on the mounting surface 12 perpendicular to the support surface 11, the detection assembly 40 is coupled to the clamp assembly 30 to ensure that the measurement force (e.g., pressure from a dial indicator) acts perpendicularly on the part being measured, which reduces measurement errors due to the angle of inclination of the force. In addition, the vertical layout allows the part under test to be positioned in a fixed plane relative to the support surface 11, facilitating quick and accurate placement and fixing of the workpiece.

In some embodiments, the base 10 has a prismatic structure, and a through hole is formed along a side surface, so that the detection device 100 has a hollow structure, and the weight of the detection device 100 is reduced.

The application method of the embodiment comprises the following steps:

First, the standard part is placed on the supporting surface 11, the first positioning member 21 is contacted with the outer hole of the standard part, the first positioning member 21 is positioned on the diameter extension line of the standard part, and the first positioning member 21 is locked. The measuring head of the first dial indicator 41 is abutted against the outer hole of the standard part, and is pressed by 0.5mm and locked. The second positioning member 22 is then moved to slightly move the second positioning member 22 back and forth along the second chute 112. If the position of the first positioning member 21 is not suitable, the second positioning member 22 may be adjusted, so that the value of the first dial indicator 41 is substantially unchanged when the standard part is rotated, that is, the rotation center of the standard part, and finally the second positioning member 22 is locked, and then the rotary body part 200 to be tested may be detected.

Secondly, the rotary part 200 to be measured is placed at the center position, the outer hole of the rotary part 200 to be measured is abutted with the first locating piece 21, the second locating piece 22 and the first dial indicator 41, and then the inner hole of the rotary part 200 to be measured is abutted with the second dial indicator 42, and the rotary part 200 to be measured can be rotated by 360 degrees, so that the inner hole or the outer hole diameter of any angle of the rotary part 200 to be measured can be read out from the first dial indicator 41 or the second dial indicator 42 very conveniently and rapidly.

Then, the roundness calculation method is to accommodate the actual contour of the same cross section and the radius difference according to the definition specified by the form and position tolerance, that is, the maximum value and the minimum value of the numerical value of the first dial indicator 41 are obtained by rotating the rotary part 200 to be measured, and the two values are subtracted by 2. The roundness of the inner hole is obtained by a second dial indicator 42.

Then, concentricity refers to the degree that the actual circle center of two concentric circles is overlapped to reach the theoretical overlapping degree. The calculation mode is that the eccentric amount of two circles is multiplied by 2. In the measurement, if the outer circle is used as a measurement reference, the second dial indicator 42 is used to measure the inner circle, and after one rotation, the reading (maximum numerical difference) of the second dial indicator 42 is the concentricity (error numerical value).

To verify the repeatability and reproducibility of the measuring process of the detecting device, we randomly extracted four races, and measured five times of concentricity by each repetition of the detecting device to obtain the following measured data:

Sequence number	A	B	C	D
					1	0.0105	0.0167	0.0194	0.0215
2	0.0114	0.0153	0.0203	0.022
					3	0.0103	0.0161	0.0201	0.0212
4	0.0103	0.0162	0.0193	0.0214
					5	0.0101	0.0151	0.0209	0.0212
Mean value of	0.01052	0.01588	0.02	0.02146
					Extremely poor	0.0013	0.0016	0.0016	0.0008

Since the human factor has no influence on the measurement result, we consider the reproducibility AV to be 0.

Calculating repeatability: ev=5.15 δc (δc is the standard deviation due to repeated measurements during measurement);

Delta _c＝R/D₂ (where R is the very poor mean, D ₂ table look-up can be obtained as 2.37);

the mean value of the very poor was calculated to be 0.0013;

i.e. ev=5.15δc=5.15× (0.0013/2.37) =0.0029;

According to the following:

P/T=9.60% or less than 10% was obtained, indicating that the detection device was acceptable.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (10)

1. A detection apparatus for detecting a rotary part, comprising:

The base is provided with a supporting surface;

The positioning component is slidably arranged on the supporting surface;

The clamping assembly is arranged on the base, and part of the clamping assembly can move along the direction perpendicular to the supporting surface;

the detection assembly is movably connected with the clamping assembly and can move relative to the supporting surface along the direction parallel to the supporting surface.

2. The detecting device according to claim 1, wherein the positioning assembly comprises a first positioning member and a second positioning member, the supporting surface is provided with a first chute and a second chute, an included angle is formed between an extension line of the first chute and an extension line of the second chute, a part of the first positioning member is slidably disposed in the first chute, and a part of the second positioning member is slidably disposed in the second chute.

3. The device of claim 2, wherein the base further comprises a mounting surface, an included angle is formed between the mounting surface and the supporting surface, and the clamping assembly is connected to the mounting surface.

4. A test device according to claim 3, wherein the clamping assembly comprises a first clamping portion and a second clamping portion, the first clamping portion and the second clamping portion being spaced apart on the mounting surface, the test assembly comprising a first dial indicator slidably coupled to the first clamping portion and a second dial indicator rotatably coupled to the second clamping portion.

5. The detecting device for detecting the rotation of a motor rotor as claimed in claim 4, wherein the first holding portion includes a first fixing base and a first guide member, the first fixing base is fixedly provided on the mounting surface, along a direction perpendicular to the supporting surface, the first guide member is slidably provided on the first fixing base, a through hole is provided at an end of the first guide member above the supporting surface, a portion of the first dial indicator passes through the through hole, and the first dial indicator is slidable in the through hole along a direction parallel to the supporting surface.

6. The detecting device for detecting the rotation of a motor rotor as claimed in claim 5, wherein the second holding portion includes a second fixing base and a second guide member, the second fixing base is fixedly provided on the mounting surface, a fixing shaft is provided on the second fixing base in a direction perpendicular to the supporting surface, the second guide member is slidably connected with the fixing shaft, and the second guide member is connected with the second dial gauge.

7. The detecting device according to claim 4 or 6, wherein the extending lines of the first dial indicator and the extending lines of the first and second sliding grooves respectively have an included angle therebetween.

8. The detecting device according to claim 5 or 6, wherein the first clamping portion further comprises a locking bolt, the first fixing seat is provided with a connecting hole, the first guiding piece is provided with a guiding hole, and the locking bolt passes through the guiding hole and is in threaded connection with the connecting hole.

9. A test device according to any one of claims 3 to 6, wherein the angle between the mounting surface and the support surface is 90 °.

10. The device of any one of claims 1 to 6, wherein the base is prismatic in structure.