CN214749363U - Rotation locking unit and fixed frock of test usefulness - Google Patents

Abstract

The utility model provides a rotation locking unit and a fixed tool for testing, wherein the rotation locking unit comprises a first locking bolt, an arc-shaped groove is arranged on one of two connecting parts, the first locking bolt passes through the arc-shaped groove to be in threaded connection with the other connecting part, the two connecting parts are relatively rotated, and the first locking bolt can slide in the arc-shaped groove; the rotation locking unit further comprises a limiting block arranged on the first connecting part, the limiting block is provided with a limiting part which can be abutted against the second connecting part to limit relative rotation of the two connecting parts, a strip-shaped through groove is formed in the limiting block, and the second locking bolt penetrates through the strip-shaped through groove of the limiting block and is in threaded connection with the first connecting part. The utility model discloses a set up first locking bolt and arc wall, stopper and second locking bolt, first connecting part rotates second adapting unit to suitable angle back relatively, restricts second adapting unit's angle jointly by first locking bolt and second locking bolt, and locking is effectual.

Description

Rotation locking unit and fixed frock of test usefulness

Technical Field

The utility model belongs to experimental check out test set field, concretely relates to rotate locking unit and test with fixed frock.

Background

A headrest for a seat of an automobile (hereinafter, referred to as an automobile headrest) is an auxiliary device provided to improve the riding comfort and safety of the automobile. Most automobile headrests comprise a headrest body and two headrest rods connected with the headrest body, and the automobile headrests are installed on automobile seats through the headrest rods. The travelling comfort of car headrest is by the high resilience foam decision of cladding in the headrest cover, for guaranteeing the travelling comfort of car headrest, when the manufacturing and designing, the manufacturer can carry out the hardness test to the car headrest body to judge whether qualified car headrest's headrest foam.

The headrest hardness test tool is required for testing the indentation hardness of the headrest body so as to fix the automobile headrest and enable the test surface (the surface of the headrest body facing a passenger in use) of the automobile headrest to be at a certain angle (vertical or inclined) with the hardness test head in the test process. The hardness test tool comprises a mounting frame which is rotatably mounted on the support frame, and a fixing device for fixing the automobile headrest is arranged on the mounting frame. In order to meet the requirement of the test angle between the test surface and the hardness test head, the test angle between the test surface and the hardness test head needs to be changed by rotating the mounting frame under the condition that the angle of the hardness test head is not changed. Generally, an arc-shaped groove is formed in the support frame, the locking bolt penetrates through the arc-shaped groove to be in threaded connection with the mounting frame, the mounting frame rotates relative to the support frame, and the locking bolt can slide in the arc-shaped groove. Above-mentioned locking mode that sets up arc wall and locking bolt, locking effect is poor, and during the hardness test, the hardness test head applys certain effort to the headrest body, probably leads to the relative support frame of mounting bracket to rotate to change the test angle of headrest body test surface and hardness test head.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the technical problem who exists among the prior art, the utility model discloses a first purpose provides a rotation locking unit to solve the current poor technical problem of rotation locking mode locking effect. A second object of the utility model is to provide a test with aforementioned rotation locking unit is with fixed frock.

In order to achieve the first objective, the utility model adopts the following technical scheme: the rotation locking unit is arranged between two connecting parts which are connected in a rotation mode, the two connecting parts are a first connecting part and a second connecting part respectively, the rotation locking unit comprises a first locking bolt, an arc-shaped groove is formed in one of the two connecting parts, the circle center of the arc-shaped groove is concentric with the rotation centers of the two connecting parts, the first locking bolt penetrates through the arc-shaped groove to be in threaded connection with the other connecting part, the second connecting part rotates relative to the first connecting part, and the first locking bolt can slide in the arc-shaped groove; the rotation locking unit further comprises a limiting block arranged on the first connecting part, the limiting block is provided with a limiting part which can be abutted against the second connecting part to limit the relative rotation of the two connecting parts, the limiting block is provided with a strip-shaped through groove, and at least one second locking bolt penetrates through the strip-shaped through groove of the limiting block to be connected with the first connecting part in a threaded manner.

Among the above-mentioned technical scheme, through setting up first locking bolt and arc wall, stopper and second locking bolt, first connecting part rotates second connecting part to suitable angle back relatively, is restricted the angle of second connecting part jointly by first locking bolt and second locking bolt, and locking effect is good.

In a preferred embodiment of the present invention, two or three second locking bolts are disposed at the position of the limiting block.

In the technical scheme, the number of the second locking bolts is proper, and two or three locking bolts have better locking effect than one locking bolt; compared with four or more than four, the quantity is less, and the operation is convenient.

The utility model discloses an in the preferred embodiment, the both ends of stopper all are equipped with spacing portion.

In the technical scheme, when the second connecting part rotates forwards or backwards relative to the first connecting part, the second connecting part is limited by the limiting part, and double-side limitation is realized.

In order to achieve the second purpose, the utility model adopts the following technical scheme: fixed frock is used in test for fixed automobile headrest that awaits measuring, automobile headrest include headrest body and two headrest poles, and fixed frock includes the base, install the support frame on the base, rotate the mounting bracket of being connected with the support frame and install the fixing device on the mounting bracket, and the mounting bracket carries out the angle with the support frame through aforementioned rotation locking unit and fixes, and fixing device includes the connecting block, and fixing device still has one of following structure or combination between them:

the structure I is as follows: the connecting block is provided with a plurality of pairs of inserting holes which can be inserted and matched with the headrest rods, and the size and the center distance of each pair of inserting holes are not completely the same or completely different;

the structure II is as follows: the fixing device further comprises a pressing block, a distance adjusting unit for adjusting the distance between the pressing block and the connecting block is arranged between the pressing block and the connecting block, and the headrest rod can be pressed between the pressing block and the connecting block.

In the technical scheme, the angle of the mounting frame is changed to adapt to the headrest bodies with different shapes by arranging the mounting frame which can rotate relative to the support frame; in the first structure, a plurality of pairs of insertion holes are arranged to fix automobile headrests of different models; in the structure two: through setting up the briquetting, establish the headrest pole pressure between briquetting and connecting block, also can fix the car headrest of different models. The utility model discloses a fixed frock can realize the fixed of the car headrest of different models, and the commonality is strong.

The utility model discloses an in a preferred embodiment, apart from the regulating unit and include two piece at least adjusting bolt, have on the briquetting with adjusting bolt complex through-hole, adjusting bolt passes through-hole and connecting block threaded connection.

Among the above-mentioned technical scheme, change the effective distance between briquetting and the connecting block through adjusting bolt to this realizes the fixed of the headrest pole of different diameters, simple structure, convenient operation.

In a preferred embodiment of the present invention, the supporting frame comprises two parallel columns and a connecting block for connecting the two columns, the mounting frame comprises a mounting plate and side plates located at two sides of the mounting plate, the two side plates are arranged at the inner sides of the two columns and rotatably connected with the corresponding columns, the fixing device is mounted on the mounting plate, and the columns and the side plates correspondingly arranged are provided with rotation locking units;

the arc-shaped groove is arranged on the upright post, and the first locking bolt penetrates through the arc-shaped groove and is in threaded connection with the corresponding side plate; or the arc-shaped groove is arranged on the side plate, and the first locking bolt penetrates through the arc-shaped groove to be in threaded connection with the corresponding upright post.

Among the above-mentioned technical scheme, the mounting bracket is pegged graft with the support frame and is cooperated, and curb plate rotates with the stand to be connected so that the support frame rotation relatively of mounting bracket, simple structure.

The utility model discloses an in another kind of preferred embodiment, support frame and base sliding connection are equipped with between base and the support frame and carry out the position locking unit that fixes to the support frame, and mounting bracket pivoted central line projection can intersect with the slip path line of support frame after on the base.

Among the above-mentioned technical scheme, support frame and base sliding connection, can slide the support frame so that the headrest back-and-forth movement on the base from this, compare and make the whole back-and-forth movement of fixed frock, this scheme is more convenient, more laborsaving.

The utility model discloses an in another kind of preferred embodiment, have the spout on the base, the support frame has the card and establishes in the spout and can be in the spout gliding traveller, and position locking unit is including the connecting bolt who is located the support frame both sides, and connecting bolt's head card is established in the spout and can slide in the spout, and threaded connection has lock nut on the connecting bolt, is equipped with between lock nut and base and carries out spacing cushion to the both sides of support frame.

Among the above-mentioned technical scheme, through setting up spout and traveller, make the traveller slide so that the carriage slides on the base in the spout. The head of the connecting bolt is clamped in the sliding groove, so that the connecting bolt, the limiting cushion block and the locking nut can integrally slide on the base, the connecting bolt and the locking nut fix the position of the limiting cushion block, and the limiting blocks on two sides of the support frame limit the position of the support frame.

In another preferred embodiment of the present invention, the spacing block is integrally formed with the pillar or is provided independently.

In another preferred embodiment of the present invention, the base is provided with a scale line for reading the sliding distance of the support frame, and/or the support frame is provided with a scale line for reading the rotation angle of the mounting frame.

Among the above-mentioned technical scheme, set up the scale mark, the people of being convenient for read the distance that the support frame removed and mounting bracket pivoted angle fast.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a rotation lock unit according to a first embodiment of the present application.

Fig. 2 is a schematic view of a state in which a limiting block of the rotation locking unit limits rotation of two connecting members according to the first embodiment of the present application.

Fig. 3 is a schematic rear axle measurement three-dimensional structure diagram of the fixed fixture for testing in the second embodiment of the present application.

Fig. 4 is a schematic view showing a state in which the headrest of the automobile is mounted on the test fixture of fig. 3.

Fig. 5 is a schematic diagram of a rear axle-side three-dimensional structure of the hardness tester of the third application example.

Reference numerals in the drawings of the specification include: the fixing tool 100, the base 10, the sliding groove 11, the fixing device 20, the connecting block 21, the inserting hole 211, the pressing block 22, the adjusting bolt 23, the supporting frame 30, the upright column 31, the arc-shaped groove 311, the connecting plate 32, the position locking unit 40, the connecting bolt 41, the locking nut 42, the limiting cushion block 43, the mounting frame 50, the mounting plate 51, the side plate 52, the rotation locking unit 60, the first locking bolt 61, the limiting block 62, the limiting part 621, the second locking bolt 63, the first connecting part 71, the second connecting part 72, the rack 200, the mounting notch 201, the cross beam 202, the connecting screw rod 203, the hardness testing head 210, the headrest body 300 and the headrest rod 301.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

Example one

The present embodiment provides a rotation locking unit, as shown in fig. 1, which is installed between two coupling members rotatably coupled by a rotating shaft, the two coupling members being a first coupling member 71 and a second coupling member 72, respectively, such as the second coupling member 72, which is rotatable with respect to the first coupling member 71. The rotation locking unit 60 comprises a first locking bolt 61, an arc-shaped groove 311 is formed in the first connecting part 71, the circle center of the arc-shaped groove 311 is concentric with the rotation centers of the two connecting parts, the first locking bolt 61 penetrates through the arc-shaped groove 311 to be in threaded connection with the second connecting part 72, the second connecting part 72 rotates relative to the first connecting part 71, and the first locking bolt 61 can slide in the arc-shaped groove 311; it is of course also possible to provide the arcuate slot 311 on the second coupling part 72, the first locking bolt 61 being screwed through the arcuate slot 311 to the first coupling part 71.

As shown in fig. 2, the rotation locking unit 60 further includes a limiting block 62 disposed on the first connecting part 71, the limiting block 62 can slide back and forth on the first connecting part 71, the limiting block 62 has a limiting portion 621 capable of abutting against the second connecting part 72 to limit the relative rotation of the two connecting parts, preferably, the limiting portion 621 is disposed at both the front end and the rear end of the limiting block 62, the limiting block 62 has a strip-shaped through groove, and at least one second locking bolt 63 passes through the strip-shaped through groove of the limiting block 62 to be in threaded connection with the first connecting part 71. In fig. 1 and 2, three second locking bolts 63 are arranged at each limiting block 62, and the three second locking bolts 63 pass through the same strip-shaped through groove and then are in threaded connection with the first connecting component 71, but it is also possible to arrange one, two, four or more second locking bolts 63, preferably two or three second locking bolts 63 at each limiting block 62.

When it is necessary to rotate the second coupling part 72 by an angle relative to the first coupling part 71, the first and second locking bolts 61 and 63 are loosened, the second coupling part 72 is rotated by an appropriate angle relative to the first coupling part 71 (for example, the second coupling part is rotated forward as shown in fig. 2), the first locking bolt 61 is first tightened, the stopper 62 is then slid on the first coupling part 71, the stopper portion 621 at the rear end of the stopper 62 is brought into contact with the rear side surface of the second coupling part 72, and then the second locking bolt 63 is tightened, thereby fixing the stopper 62.

Example two

The embodiment provides a fixed frock for test for fix the automotive headrest that awaits measuring, as shown in fig. 4, the automotive headrest includes headrest body 300 and two headrest poles 301.

As shown in fig. 3 and 4, the fixing tool 100 includes a base 10, a support frame 30 mounted on the base, a mounting frame 50 rotatably connected to the support frame 30, and a fixing device 20 mounted on the mounting frame 50, wherein the support frame 30 corresponds to a first connecting member 71, the mounting frame 50 corresponds to a second connecting member 72, and the mounting frame 50 and the support frame 30 are angularly fixed by a rotation locking unit 60 according to the first embodiment. The fixing device 20 comprises a connecting block 21, and the fixing device 20 further has one or a combination of the following structures:

the structure I is as follows: the connecting block 21 is provided with a plurality of pairs of inserting holes 211 which can be inserted and matched with the headrest rods 301, the inserting holes 211 penetrate through the connecting block 21, and the size and the center distance of each pair of inserting holes 211 are not completely the same or different. The size of the aperture of each pair of plug holes 211 is matched with the diameter of the headrest rod 301, such as transition fit or interference fit between the headrest rod 301 and the plug port; the center distance of each pair of insertion holes 211 is matched with the center distance of the two headrest rods 301.

The structure II is as follows: the fixing device 20 further comprises a pressing block 22, a distance adjusting unit for adjusting the distance between the pressing block 22 and the connecting block 21 is arranged between the pressing block 22 and the connecting block 21, and the headrest rod 301 can be pressed between the pressing block 22 and the connecting block 21. For example, the distance adjusting unit comprises at least two adjusting bolts 23, a through hole matched with the adjusting bolt 23 is formed in the pressing block 22, and the adjusting bolt 23 penetrates through the through hole to be in threaded connection with the connecting block 21; of course, the distance adjustment unit may also be another mechanism capable of linearly moving and locking the pressure piece 22, such as a telescopic electric cylinder.

In the embodiment, the first structure and the second structure are preferably arranged at the same time, so that when a new product is developed and the inserting hole 211 on the connecting block 21 is not enough to be used, the headrest rod 301 of the automobile headrest can be fixed on the fixing device 20 through the pressing block 22 and the adjusting bolt 23.

In another preferred embodiment, such as the base 10 is disposed horizontally, as shown in fig. 3, the supporting frame 30 includes two vertical columns 31 disposed in parallel, and preferably, the lower ends of the two vertical columns 31 are connected into a whole by a connecting block 21, so that the supporting frame 30 is a U-shaped frame structure with an open upper end. The mounting bracket 50 comprises a mounting plate 51 and vertical side plates 52 positioned at the left side and the right side of the mounting plate 51, the connecting block 21 of the fixing device 20 is fixedly mounted on the mounting plate 51, and the upper ends of the side plates 52 are fixedly connected with the end parts of the mounting plate 51, so that the mounting bracket 50 is of a U-shaped frame structure with an open lower end.

In the present embodiment, the mounting bracket 50 is inserted into the supporting bracket 30, and two side plates 52 are disposed corresponding to the two upright posts 31 and rotatably connected to the upright posts 31 through a rotating shaft, for example, the two side plates 52 are disposed inside the two upright posts 31. The corresponding upright column 31 and the side plate 52 are provided with two rotation locking units 60, namely two rotation locking units 60. The two upright posts 31 are respectively provided with an arc-shaped slot 311, and the first locking bolt 61 passes through the arc-shaped slot 311 and is in threaded connection with the corresponding side plate 52; of course, the arc-shaped slot 311 can be provided on the side plate 52, and the first locking bolt 61 passes through the arc-shaped slot 311 and is in threaded connection with the corresponding upright column 31.

Preferably, the upright post 31 of the supporting frame 30 is provided with a scale (not shown) for reading the rotation angle of the mounting frame 50.

As shown in fig. 3, in another preferred embodiment, the supporting frame 30 is slidably connected to the base frame 10, a position locking unit 40 for fixing the supporting frame 30 is disposed between the base frame 10 and the supporting frame 30, and a rotation center line of the mounting frame 50 projected on the base frame 10 can intersect with a sliding path line of the supporting frame 30. For example, the supporting frame 30 can slide back and forth on the base 10, and the center line of the rotation of the mounting frame 50 projected on the base 10 can be perpendicular to the sliding path line of the supporting frame 30, i.e. the mounting frame 50 can tilt back and forth relative to the supporting frame 30.

In another preferred embodiment, as shown in fig. 3, two sliding grooves 11 are formed in the upper end surface of the base 10 in parallel, for example, the sliding grooves 11 are T-shaped grooves, and the lower end of the upright 31 of the supporting frame 30 has a sliding column which is clamped in the sliding grooves 11 and can slide in the sliding grooves 11. The position locking unit 40 includes connecting bolts 41 located at the front and rear sides of the upright column 31, the front and rear sides of the two upright columns 31 are respectively provided with one connecting bolt 41 and four connecting bolts 41, the head of the connecting bolt 41 is clamped in the sliding groove 11 and can slide in the sliding groove 11, for example, the connecting bolt 41 is a T-shaped bolt, a locking nut 42 is connected to the connecting bolt 41 through a thread, and a limiting cushion block 43 for limiting the front and rear sides of the upright column 31 is arranged between the locking nut 42 and the base 10. The position limiting cushion 43 is integrally formed with or independently disposed from the upright 31, and is independently disposed as shown in fig. 3, and when integrally disposed, the position limiting cushion 43 is equivalent to a lug of the upright 31.

When the supporting frame 30 needs to slide back and forth on the base 10, the four locking nuts 42 are unscrewed, the supporting frame 30 is slid back and forth to a proper position, the inner side surface of the limiting cushion block 43 is contacted with the side surface of the upright column 31, and then the four locking nuts 42 are screwed, so that the position of the supporting frame 30 is fixed. Preferably, the base 10 is provided with a scale (not shown) for reading the sliding distance of the supporting frame 30.

EXAMPLE III

The present embodiment provides a hardness tester, as shown in fig. 5, and in a preferred embodiment, the hardness tester comprises a machine frame 200, and a hardness testing head 210 and the fixing tool 100 in the first embodiment are mounted on the machine frame 200. Specifically, the rack 200 has a mounting slot 201, the top of the mounting slot 201 is a cross beam 202, the hardness testing head 210 is mounted at the lower end of the cross beam 202 through a clamping device, the fixing tool 100 is mounted in the mounting slot 201 and located below the hardness testing head 210, the base 10 of the fixing tool 100 is fixedly connected with the rack 200 through a connecting screw 203, for example, the four corners of the base 10 are respectively connected with the rack 200 through one connecting screw 203.

When the hardness tester is used to test the hardness of the headrest body 300, as shown in fig. 3 to 5, for example, the automotive headrest is first mounted on the fixing device 20 of the fixing tool 100 through two headrest rods 301, then the mounting bracket 50 is rotated to a proper angle relative to the supporting frame 30, then the supporting frame 30 is moved back and forth to a proper position on the base 10 with the headrest body 300 positioned below the hardness testing head 210, and then the hardness of the headrest body 300 is measured by using the hardness testing head 210. The specific method for testing the hardness of the headrest body 300 is the prior art, and the present invention is not described in detail.

The utility model discloses use fixed frock 100 to install and explain as the example on vertical hardness testing machine, it is required to explain, according to the user demand, also can install fixed frock 100 on horizontal hardness testing machine.

In the description herein, reference to the description of the terms "preferred embodiment," "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. The rotation locking unit is arranged between two connecting parts which are connected in a rotation mode, the two connecting parts are a first connecting part and a second connecting part respectively, the rotation locking unit comprises a first locking bolt, an arc-shaped groove is formed in one of the two connecting parts, the circle center of the arc-shaped groove is concentric with the rotation centers of the two connecting parts, the first locking bolt penetrates through the arc-shaped groove to be in threaded connection with the other connecting part, the second connecting part rotates relative to the first connecting part, and the first locking bolt can slide in the arc-shaped groove; it is characterized in that the preparation method is characterized in that,

the rotation locking unit further comprises a limiting block arranged on the first connecting part, the limiting block is provided with a limiting part which can be abutted against the second connecting part to limit the relative rotation of the two connecting parts, the limiting block is provided with a strip-shaped through groove, and at least one second locking bolt penetrates through the strip-shaped through groove of the limiting block and is in threaded connection with the first connecting part.

2. The rotation-locking unit of claim 1, wherein two or three of the second locking bolts are provided at the stopper.

3. The rotation-locking unit of claim 1, wherein the stopper is provided at both ends thereof with the stopper portions.

4. The test fixing tool with the rotary locking unit of any one of claims 1 to 3 is used for fixing a headrest of a vehicle to be tested, the headrest comprises a headrest body and two headrest rods, and the test fixing tool is characterized by comprising a base, a support frame installed on the base, a mounting frame connected with the support frame in a rotating mode, and a fixing device installed on the mounting frame, the mounting frame and the support frame are fixed in angle through the rotary locking unit, the fixing device comprises a connecting block, and the fixing device further comprises one of the following structures or a combination of the two structures:

the structure I is as follows: the connecting block is provided with a plurality of pairs of inserting holes which can be matched with the headrest rods in an inserting way, and the size and the center distance of each pair of inserting holes are not completely the same or completely different;

the structure II is as follows: the fixing device further comprises a pressing block, a distance adjusting unit for adjusting the distance between the pressing block and the connecting block is arranged between the pressing block and the connecting block, and the headrest rod can be pressed between the pressing block and the connecting block.

5. The test fixing tool set forth in claim 4, wherein the distance adjusting unit comprises at least two adjusting bolts, the pressing block is provided with through holes matched with the adjusting bolts, and the adjusting bolts penetrate through the through holes to be in threaded connection with the connecting block.

6. The test fixing tool according to claim 4, wherein the support frame comprises two columns arranged in parallel and a connecting block for connecting the two columns, the mounting frame comprises a mounting plate and side plates located on two sides of the mounting plate, the two side plates are arranged on the inner sides of the two columns and are rotatably connected with the corresponding columns, the fixing device is mounted on the mounting plate, and the rotary locking units are arranged on the columns and the side plates which are correspondingly arranged;

the arc-shaped grooves are formed in the stand columns, and the first locking bolts penetrate through the arc-shaped grooves to be in threaded connection with the corresponding side plates; or the arc-shaped groove is formed in the side plate, and the first locking bolt penetrates through the arc-shaped groove to be in threaded connection with the corresponding upright post.

7. The test fixing tool according to any one of claims 4 to 6, wherein the support frame is slidably connected to the base, a position locking unit for fixing the support frame is disposed between the base and the support frame, and a rotation center line of the mounting frame projected on the base can intersect with a sliding path line of the support frame.

8. The test fixing tool set forth in claim 7, wherein the base has a sliding groove, the supporting frame has a sliding post which is engaged in the sliding groove and can slide in the sliding groove, the position locking unit includes connecting bolts located at both sides of the supporting frame, the head of the connecting bolt is engaged in the sliding groove and can slide in the sliding groove, the connecting bolt is threadedly connected with a lock nut, and a position limiting cushion block for limiting both sides of the supporting frame is provided between the lock nut and the base.

9. The fixture of claim 8, wherein the position limiting cushion block is integrally formed with the pillar or is disposed separately from the pillar.

10. The fixture according to claim 7, wherein the base is provided with a scale mark for reading a sliding distance of the support frame, and/or the support frame is provided with a scale mark for reading a rotation angle of the mounting frame.

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