CN221173682U - Synchronous testing of shaft b and shaft c torque - Google Patents

Abstract

The application relates to the technical field of torsion testing equipment, and particularly discloses a synchronous torsion testing device for a shaft b and a shaft c, which comprises a mounting table, an object to be tested, a testing base and a testing component, wherein the object to be tested comprises a fixed part and a rotating part, a connecting block is arranged on the rotating part, the testing component comprises a plurality of groups of torque sensors, a plurality of groups of torsion brackets and a plurality of groups of driving motors, the torsion brackets are arranged at the end parts of the torque sensors, and a sleeve hole is arranged at one end of each torsion bracket, which is far away from the torque sensor, corresponding to the connecting hole; the other end of the torque sensor is connected with a driving motor, a first fixing piece is arranged at the end part of the torsion bracket, which is far away from the torque sensor, and a movable assembly and a fixed assembly are arranged on the mounting table; the multiple groups of torque sensors, the multiple groups of torsion brackets and the multiple groups of driving motors can test multiple rotating parts simultaneously, the moving assembly can adjust the positions of the driving motors, the torque sensors and the torsion brackets, and the fixing assembly can fix an object to be tested on the test base.

Description

Synchronous testing of shaft b and shaft c torque

Technical Field

The application relates to the technical field of torsion testing equipment, in particular to synchronous torsion testing of a shaft b and a shaft c.

Background

Torsion tester, also known as torque tester, torquemeter, is a precision instrument used to test and calibrate various moments. The torque tester is generally used for measuring and correcting torque and torque setting conditions of various electric batches, air batches, torque batches and torque wrench, is applicable to various products such as rotating shafts, bearings, bottle caps and the like needing to measure torque, and is provided with tools such as special fixtures, clamps and the like.

The Chinese patent document with publication number CN211576433U discloses a torsion tester capable of being assembled and disassembled quickly, which comprises a torsion unit, an object to be tested, an air cylinder, a test base and a clamping assembly arranged on the test base, wherein the clamping assembly comprises a supporting rod and a torsion spring, and a clamping block is arranged above the supporting rod; the object to be measured comprises a fixed part and a rotating part which are connected with each other in a rotating way, a connecting sheet is detachably arranged on the rotating part, and an opening groove is formed in the connecting sheet; the telescopic end of the cylinder is connected with a cross beam, a connecting rod is arranged on the cross beam, and one side of the connecting rod, which is far away from the cylinder, is provided with a push rod.

When the object to be tested is tested, firstly, the connecting sheet is mounted on the rotating part, so that the rotating part is clamped in the open slot; starting the cylinder to drive the ejector rod to move, so that the ejector rod jacks up the supporting rod, then placing the fixing part on the test base, and adjusting the position of the fixing part to finish the installation of the rotating part; the cylinder starts, drives the connecting rod and the cross beam to move, drives the ejector rod to move, enables the support rod to rotate under the torsion action of the torsion spring, drives the clamping block to abut against the fixing portion, completes the installation of the fixing portion, and finally starts the test.

For the above related art, when there is more than one rotating portion on one object to be tested, the object to be tested needs to be removed and reinstalled after one rotating portion is tested, and then another rotating portion is tested, so that multiple tests are required, which is time-consuming, and therefore, improvement is needed.

Disclosure of utility model

In order to improve the testing efficiency of the torsion tester on a tested object, the application provides a synchronous torsion test of a shaft b and a shaft c.

The application provides a synchronous torsion test for a shaft b and a shaft c, which adopts the following technical scheme:

The torsion synchronous test device comprises a shaft b and a shaft c, and comprises a mounting table, an object to be tested, a test base and a test assembly, wherein the test base and the test assembly are both arranged on the mounting table, the object to be tested is arranged on the test base, the object to be tested comprises a fixed part and a plurality of rotating parts, connecting blocks are arranged on the rotating parts, and the test assembly comprises a plurality of groups of torque sensors, a plurality of groups of torsion brackets and a plurality of groups of driving motors;

The torsion support is arranged at the end part of the torque sensor, and a trepanning is arranged at one end of the torsion support, which is far away from the torque sensor, corresponding to the connecting block; the torque sensor other end with driving motor connects, torsion support keep away from torque sensor's tip be provided with be used for with rotating portion carries out fixed connection's first mounting, the mount table be provided with be used for right driving motor torque sensor with torsion support carries out position adjustment's removal subassembly, still be provided with on the mount table and be used for making the fixed subassembly of object to be tested on test base.

By adopting the technical scheme, when a plurality of rotating parts exist on the object to be tested, the plurality of groups of torque sensors, the plurality of groups of torsion brackets and the plurality of groups of driving motors can test the plurality of rotating parts simultaneously, and compared with the prior art, the time for testing the replacing positions for taking down the object to be tested for many times is saved;

The movable assembly can adjust the positions of the driving motor, the torque sensor and the torsion support, different objects to be tested can be tested by adjusting the positions of the driving motor, the torque sensor and the torsion support, and the fixed assembly can fixedly install the objects to be tested on the test base, so that the accuracy of the test is improved.

Optionally, the first fixing piece comprises a fixing block, a rotating shaft for folding the fixing block is arranged on the fixing block, a clamping block is arranged at one end of the fixing block, and a clamping groove is formed at the other end of the fixing block corresponding to the clamping block;

The clamping block is axially symmetrically arranged with the rotating shaft as the center, a first fixing hole is formed in the connecting block corresponding to the fixing block, a fixing groove is formed in one end of the fixing block corresponding to the connecting block, and the clamping groove, the clamping block, the fixing groove and the rotating shaft are all arranged on the same surface of the fixing block.

Through adopting above-mentioned technical scheme, will twist reverse the trepanning cover of seting up on the support tip earlier and establish on the connecting block, fold through the axis of rotation after passing first fixed orifices with the fixed block again, make the connecting block get into the fixed slot, and make the joint each other between joint piece and the joint slot, can realize the fixed connection between connecting block and the support tip of twisting reverse on the rotating part, when needs make the tip of twisting reverse support separate with the fixed part, make joint piece and joint slot separation, take out the fixed block from first fixed orifices can.

Optionally, the mobile assembly includes movable plate and movable block, the movable plate set up in on the mount table, just the movable block set up in the movable plate is close to on the one side of mount table, the mount table corresponds the movable block has seted up annular spout, just annular spout with test base sets up as the center, driving motor with torque sensor all set up in on the movable plate is kept away from on the one side of mount table.

Optionally, the movable plate and the movable block are detachably connected.

Through adopting above-mentioned technical scheme, can dismantle the connection between movable plate and the movable block, made things convenient for the angle between movable plate and the movable block to the driving motor on the movable plate and torque sensor and test base between have more multi-angle to test the thing that awaits measuring.

Through adopting above-mentioned technical scheme, when the movable block removes in annular spout, driving motor and torque sensor on the movable plate all can carry out the removal of encircleing taking test base as the center on the mount pad to required driving motor and torque sensor's position and angle demand when having realized the test of different objects to be tested, avoided carrying out the loaded down with trivial details step of dismantling earlier to install again to driving motor and torque sensor, further improved test efficiency.

Optionally, the fixed subassembly includes installation piece, fixed plate, second mounting and is used for making the fixed plate is right the driving piece that the fixed part was fixed, two sets of installation piece mutually parallel perpendicular set up in on the same height of test base lateral wall, the fixed plate set up in two sets of between the installation piece just the fixed plate is kept away from the one end of mount table is provided with down the briquetting, the installation piece with correspond on the fixed plate the second fixed orifices have all been seted up to the second mounting, the fixed plate passes through the second mounting rotates to be installed two sets of between the installation piece.

Through adopting above-mentioned technical scheme, install the fixed plate between two sets of installation pieces, make the second mounting pass the fixed plate and the second fixed orifices on the mounting hole is fixed again for the fixed plate uses the second mounting to rotate as the center of rotation, thereby makes lower briquetting and fixed part butt, and the rethread driving piece makes the position of fixed plate fix, thereby realizes lower briquetting and the further inseparable butt of fixed part, thereby realizes the fixed of fixed part on the article to be measured.

Optionally, the driving piece includes flexible cylinder, drive plate and drive piece, the drive piece is provided with two sets of, flexible cylinder set up in on the mount table, the drive plate is parallel to the mount table mesa set up in flexible end tip of flexible cylinder;

The two groups of driving blocks are arranged at the end parts of the driving plates, which are far away from the telescopic air cylinders, the end parts of the driving blocks, which are far away from the driving plates, are arranged into wedges, driving grooves are formed in the test base, corresponding to the driving blocks, and the width of each driving groove is smaller than that of each driving block.

Through adopting above-mentioned technical scheme, flexible cylinder is flexible to drive the drive plate and remove for in the drive slot of seting up on the drive plate gets into the test base with the drive piece that the drive plate is connected, because the width of drive slot is less than the drive piece, so partly drive piece leaks outside the test base, the drive piece is kept away from the tip of drive plate and is set up to wedge, has realized can driving the one side that the fixed plate is close to the mount table, makes the fixed plate use the second mounting to rotate as center of rotation, in order to reach the compact butt of the briquetting on the fixed plate between the fixed part fixed.

Optionally, a through groove is formed in the test base, a pulling piece is arranged in the through groove, and two ends of the pulling piece are respectively connected with two groups of one ends, close to the mounting table, of the fixing plate.

Through adopting above-mentioned technical scheme, after the test of the thing of treating is accomplished, flexible cylinder shrink, after the separation between drive block and the fixed plate, the shrink of tractive spare can make two fixed plates on the test base reset, has saved the manual work and has adjusted the step of fixed block, has made things convenient for subsequent test, has improved efficiency of software testing.

Optionally, a buffer layer is disposed on the lower pressing block.

Through adopting above-mentioned technical scheme, the buffer layer can reduce the pressure between briquetting and the fixed part under guaranteeing to press down the briquetting under the circumstances of dynamics to the fixed part, has reduced the influence to the thing that awaits measuring when pressing down the briquetting down.

In summary, the present application includes at least one of the following beneficial technical effects:

1. When a plurality of rotating parts exist on the object to be tested, the plurality of groups of torque sensors, the plurality of groups of torsion brackets and the plurality of groups of driving motors can test the plurality of rotating parts at the same time, and compared with the prior art, the application omits the time for testing the replacing positions of the object to be tested after being taken down for a plurality of times;

2. The moving assembly can adjust the positions of the driving motor, the torque sensor and the torsion bracket, so that the positions of the driving motor, the torque sensor and the torsion bracket can be adjusted to test different objects to be tested;

3. The fixed component can be used for fixedly mounting an object to be tested on the test base, so that the accuracy of the test is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an object to be measured when installed;

FIG. 2 is a schematic diagram of the overall structure of an object under test;

FIG. 3 is a schematic view of the structure of the first fixing member;

FIG. 4 is an enlarged partial view of portion A of FIG. 1;

FIG. 5 is a partial enlarged view of portion B of FIG. 2;

Reference numerals: 1. a mounting table; 2. an object to be measured; 21. a fixing part; 22. a rotating part; 221. a connecting block; 2211. a first fixing hole; 3. a test base; 4. a testing component; 41. a torque sensor; 42. twisting the bracket; 421. trepanning; 43. a driving motor; 5. a first fixing member; 51. a fixed block; 511. a rotating shaft; 512. a clamping block; 513. a clamping groove; 514. a fixing groove; 6. a moving assembly; 61. a moving plate; 62. a moving block; 63. an annular chute; 7. a fixing assembly; 71. a mounting block; 72. a fixing plate; 721. pressing the block; 73. a second fixing member; 74. a driving member; 741. a telescopic cylinder; 742. a driving plate; 743. a driving block; 744. a driving groove; 75. a second fixing hole; 8. a through groove; 81. a pulling member.

Detailed Description

The present application will be described in further detail with reference to fig. 1 to 5.

The embodiment of the application discloses a synchronous torsion test for a shaft b and a shaft c.

Referring to fig. 1, 2 and 3, the device comprises a mounting table 1, an object to be tested 2, a test base 3 and a test assembly 4, wherein the test base 3 and the test assembly 4 are arranged on the mounting table 1, the object to be tested 2 is arranged on the test base 3, the object to be tested 2 comprises a fixed part 21 and a plurality of rotating parts 22, a connecting block 221 is arranged on the rotating parts 22, and the test assembly 4 comprises a plurality of groups of torque sensors 41, a plurality of groups of torsion brackets 42 and a plurality of groups of driving motors 43;

The plurality of groups of torsion brackets 42 are arranged at the end parts of the torque sensors 41, and sleeve holes 421 are arranged at the ends, far away from the torque sensors 41, of the torsion brackets 42 corresponding to the connecting blocks 221; the other end of the torque sensor 41 is respectively connected with a plurality of groups of driving motors 43, the end of the torsion bracket 42 far away from the torque sensor 41 is provided with a first fixing piece 5 for fixedly connecting with the rotating part 22, and the mounting table 1 is provided with a moving assembly 6 and a fixing assembly 7.

The multiple sets of torque sensors 41, the multiple sets of torsion brackets 42 and the multiple sets of driving motors 43 provided in the application can simultaneously perform torque tests on the multiple rotating parts 22 on the object 2 to be tested, in this embodiment, the number of the torque sensors 41, the torsion brackets 42 and the driving motors 43 is two, the same rotating parts 22 are two, and in other embodiments, the number of the torque sensors 41, the torsion brackets 42 and the driving motors 43 can be adjusted according to the number of the rotating parts 22;

Before testing, the sleeve hole 421 at the end part of the torsion bracket 42 is arranged on the connecting block 221 of the rotating part 22, and then the end part of the torsion bracket 42 is fixed with the rotating part 22 through the first fixing piece 5, so that the fixed connection between the end part of the torsion bracket 42 and the rotating part 22 is realized.

When the object 2 to be tested is tested, it is found that the fixed connection between the end of the torsion bracket 42 and the rotating part 22 has a larger influence on the test result, and in the prior art, loosening easily occurs in a socket-and-spigot manner, referring to fig. 4 and 5, the first fixing piece 5 comprises a fixing block 51, a rotating shaft 511 is mounted on the fixing block 51, and two ends of the fixing block 51 can be folded through the rotating shaft 511;

In order to keep the shape of the folded fixing block 51 unchanged, one end of the fixing block 51 is integrally provided with a clamping block 512, the other end of the fixing block 51 is provided with a clamping groove 513 corresponding to the clamping block 512, the clamping block 512 and the clamping groove 513 are axisymmetric with respect to the rotation shaft 511 as a center, and the shape of the folded fixing block 51 can be kept unchanged by mutually clamping the clamping block 512 and the clamping groove 513 after the fixing block 51 is folded, so that a first fixing hole 2211 is formed in a connecting block 221 for enabling the fixing block 51 to be installed in the first fixing hole 2211, and the clamping of the rotating part 22 and the end part of the torsion bracket 42 is realized;

During the process of installing the fixing block 51, we find that the clamping block 512 and the clamping groove 513 cannot be clamped and fixed due to the influence of the connecting block 221, so that the fixing groove 514 is formed in the fixing block 51 corresponding to the part of the connecting block 221 above the first fixing hole 2211, and stable and fixed connection between the connecting block 221 of the rotating part 22 and the end part of the torsion bracket 42 is realized.

Referring to fig. 1, 2 and 3, when testing the object 2, we find that the positions of the rotating parts 22 on different objects 2 may be different, so that the driving motor 43 and the torque sensor 41 need to be disassembled and then installed at the position required by the test, which is time-consuming and tedious;

The moving assembly 6 we set up therefore comprises a moving plate 61 and a moving block 62, and the removable connection between the moving plate 61 and the moving block 62 is in this embodiment of the structure: the movable plate is provided with a through hole, the movable block is provided with a threaded hole, bolts are arranged in the through hole and the threaded hole, and the movable plate and the movable block are fixed through locking between the bolts and the threaded hole;

The moving plate 61 is slidably mounted on the mounting table 1, the moving block 62 is slidably and detachably mounted on one surface of the moving plate 61, which is close to the mounting table 1, an annular sliding groove 63 is formed in the mounting table 1 corresponding to the moving block 62, the center of the annular sliding groove 63 is the test base 3, in this embodiment, the number of the moving blocks 62 on the single group of moving plates 61 is two, the moving fast section is square, the square is a preferred mode of this embodiment, in other embodiments, the section of the moving block 62 can be inverted 'T' -shaped, etc., and the number of the moving blocks 62 can be adjusted according to the actual situation;

The drive motor 43 and the torque sensor 41 are both fixedly mounted on the moving plate 61, whereby it is achieved that the positions of the drive motor 43 and the torque sensor 41 can be adjusted, in this embodiment. In order to further improve the stability of the driving motor 43 and the torque sensor 41, a friction layer for improving the friction force between the moving block 62 and the annular chute 63 is adhered to the annular chute 63, and the friction layer may be a rubber layer, which is a preferred mode of the present embodiment, and in other embodiments, the friction layer may be soft plastic, etc.

Referring to fig. 3 and 4, the fixing of the object 2 to be tested will also affect the test result, so the fixing assembly 7 set by us includes a mounting block 71, a fixing plate 72, a second fixing piece 73 and a driving piece 74, the two sets of mounting blocks 71 are mutually parallel and vertically integrally connected on the same height of the side wall of the test base 3, the fixing plate 72 is installed between the two sets of mounting blocks 71, one end part of the fixing plate 72, which is far away from the mounting table 1, is integrally connected with a pressing block 721, and the fixing plate 72 and the mounting block 71 are provided with a second fixing hole 75, and the second fixing piece 73 penetrates through the fixing plate 72 and the second fixing hole 75 on the mounting block 71 to rotatably install the fixing plate 72 between the two sets of mounting blocks 71;

When the fixing plate 72 rotates, the pressing block 721 can abut against the fixing portion 21, and in this embodiment, the second fixing member 73 is a bolt and a nut, which are a preferable mode of this embodiment, and in other embodiments, can be a screw and a nut;

Referring to fig. 3 and 4, since the fixing portion 21 cannot be fixed by only mounting the fixing plate 72, the fixing portion 21 needs to be rotated by the driving member 74 so that the lower pressing block 721 is closely contacted with the fixing portion 21, and the driving member 74 includes the telescopic cylinder 741, the driving plate 742 and the driving block 743; the telescopic cylinder 741 is fixedly arranged on the mounting table 1, the driving plate 742 is arranged at the end part of the telescopic end of the telescopic cylinder 741 parallel to the table surface of the mounting table 1, and two groups of driving blocks 743 are uniformly arranged at the end part of the driving plate 742 far away from the telescopic cylinder 741,

Therefore, in order to realize the driving and rotating effect on the fixed plate 72, the end part of the driving block 743 far away from the driving plate 742 is provided with a wedge shape, and when the telescopic cylinder 741 extends, the thickness gradually changed from the wedge end part enables the fixed plate 72 to rotate around the bolt, so that the pressing down of the pressing block 721 is realized; in order to reduce the influence of the lower pressing block 721 on the fixing part 21 when the lower pressing block 721 is tightly abutted against the fixing part 21, a buffer layer is sleeved on the lower pressing block 721; in this embodiment, the buffer layer may be a rubber layer, which is a preferred mode of this embodiment, and in other embodiments may be a soft plastic layer, where the buffer layer is indicated in the figure;

Referring to fig. 3 and 4, after the test of the object 2 is completed, the telescopic cylinder 741 is contracted, and before the object 2 is removed, the lower pressing block 721 needs to be manually separated from the fixing portion 21, which is troublesome and reduces the working efficiency, therefore, the through groove 8 is formed in the test base 3, the pulling member 81 is installed in the through groove 8, two ends of the pulling member 81 are respectively connected with one ends of the two groups of fixing plates 72 close to the mounting table 1, after the test of the object 2 is completed, the telescopic cylinder 741 is contracted, the driving block 743 is separated from the fixing plates 72, and the pulling member 81 is reset to separate the fixing plates 72 from the fixing portion 21;

In this embodiment, the pulling member 81 may be a spring, which is a preferred mode of this embodiment, and may be a rubber band or the like in other embodiments; under the pulling of the spring, a part of the fixing plate 72 can enter the through groove 8, so in order to ensure the driving and rotating effect on the fixing plate 72, a driving groove 744 is formed on the test base 3 corresponding to the driving block 743, and the width of the driving groove 744 is smaller than that of the driving block 743.

The implementation principle of the torsion synchronous test of the shaft b and the shaft c in the embodiment of the application is as follows:

However, when testing different objects 2 or multiple rotating parts 22 on the objects 2, the objects 2 may be placed on the test base 3, and then the moving assembly 6 rotates the multiple driving motors 43, the torque sensors 41 and the torsion bracket 42 to a proper position around the test base 3, and the sleeve hole 421 at the end of the torsion bracket 42 is sleeved on the connecting block 221 of the rotating part 22;

The end of the torsion bracket 42 is fixedly connected with the connecting hole of the rotating part 22 through the first fixing piece 5, then the telescopic cylinder 741 is started, the telescopic cylinder 741 pushes the driving plate 742 to move, the driving block 743 at the end of the driving plate 742 enables the fixing plate 72 to rotate, so that tight butt joint between the lower pressing plate at the end of the fixing plate 72 and the fixing part 21 is realized, and finally the object 2 to be tested is tested.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (8)

1. The shaft b and the shaft c are used for synchronous torsion testing and comprise an installation table (1), an object to be tested (2), a testing base (3) and a testing component (4), wherein the testing base (3) and the testing component (4) are both arranged on the installation table (1), and the object to be tested (2) is arranged on the testing base (3), and is characterized in that: the to-be-tested object (2) comprises a fixed part (21) and a plurality of rotating parts (22), wherein connecting blocks (221) are arranged on the rotating parts (22), and the test assembly (4) comprises a plurality of groups of torque sensors (41), a plurality of groups of torsion brackets (42) and a plurality of groups of driving motors (43);

The torsion bracket (42) is arranged at the end part of the torque sensor (41), and a sleeve hole (421) is formed in one end, away from the torque sensor (41), of the torsion bracket (42) corresponding to the connecting block (221); the torque sensor (41) other end with driving motor (43) are connected, torsion support (42) keep away from the tip of torque sensor (41) be provided with be used for with rotating portion (22) carry out fixed connection's first mounting (5), mount table (1) be provided with be used for right driving motor (43) torsion sensor (41) and torsion support (42) carry out position adjustment's remove subassembly (6), still be provided with on mount table (1) and be used for making fixed subassembly (7) on test base (3) of determinand (2).

2. The shaft b and shaft c torque synchronization test of claim 1, wherein: the first fixing piece (5) comprises a fixing block (51), a rotating shaft (511) for folding the fixing block (51) is arranged on the fixing block (51), a clamping block (512) is arranged at one end of the fixing block (51), and a clamping groove (513) is formed in the other end of the fixing block (51) corresponding to the clamping block (512);

The clamping block (512) and the clamping groove (513) are axially symmetrically arranged with the rotating shaft (511) as the center, a first fixing hole (2211) is formed in the connecting block (221) corresponding to the fixing block (51), a fixing groove (514) is formed in one end of the fixing block (51) corresponding to the connecting block (221), and the clamping groove (513), the clamping block (512), the fixing groove (514) and the rotating shaft (511) are all arranged on the same surface of the fixing block (51).

3. The shaft b and shaft c torque synchronization test of claim 1, wherein: the mobile assembly (6) comprises a mobile plate (61) and a mobile block (62), the mobile plate (61) is arranged on the installation table (1), the mobile block (62) is arranged on one surface of the mobile plate (61) close to the installation table (1), the installation table (1) corresponds to the mobile block (62) and is provided with an annular chute (63), the annular chute (63) is arranged with the test base (3) as the center, and the driving motor (43) and the torque sensor (41) are arranged on one surface of the mobile plate (61) away from the installation table (1).

4. A synchronous torsion test for shaft b and shaft c according to claim 3, wherein: and the movable plate is detachably connected with the movable block.

5. The shaft b and shaft c torque synchronization test of claim 1, wherein: the fixing assembly (7) comprises a mounting block (71), a fixing plate (72), a second fixing piece (73) and a driving piece (74) for enabling the fixing plate (72) to fix the fixing part (21), and the two groups of mounting blocks (71) are mutually parallel and vertically arranged on the same height of the side wall of the test base (3);

The fixed plate (72) is arranged between the two groups of mounting blocks (71), one end, away from the mounting table (1), of the fixed plate (72) is provided with a pressing block (721), second fixing holes (75) are formed in the mounting blocks (71) and the fixed plate (72) corresponding to the second fixing pieces (73), and the fixed plate (72) is rotatably mounted between the two groups of mounting blocks (71) through the second fixing pieces (73).

6. The synchronous torque testing of axes b and c of claim 5, wherein: the driving piece (74) comprises a telescopic air cylinder (741), a driving plate (742) and driving blocks (743), wherein the driving blocks (743) are provided with two groups, the telescopic air cylinder (741) is arranged on the mounting table (1), and the driving plate (742) is parallel to the table top of the mounting table (1) and is arranged at the end part of the telescopic end of the telescopic air cylinder (741);

Two sets of drive blocks (743) all set up in drive plate (742) keep away from the tip of flexible cylinder (741), drive block (743) keep away from the tip of drive plate (742) sets up to the wedge, just correspond on test base (3) drive groove (744) have been seted up to drive block (743), drive groove (744) width is less than the width of drive block (743).

7. The synchronous torque testing of axes b and c of claim 5, wherein: the test base (3) is provided with a through groove (8), a traction piece (81) is arranged in the through groove (8), and two ends of the traction piece (81) are respectively connected with two groups of fixing plates (72) close to one end of the mounting table (1).

8. The synchronous torque testing of axes b and c of claim 5, wherein: a buffer layer is arranged on the pressing block (721).