CN115070159A

CN115070159A - Bridging tool of sensor

Info

Publication number: CN115070159A
Application number: CN202210878456.2A
Authority: CN
Inventors: 沈力; 吴美贞
Original assignee: Shenzhen Xinjingcheng Sensor Technology Co ltd
Current assignee: Shenzhen Xinjingcheng Sensor Technology Co ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2022-09-20
Anticipated expiration: 2042-07-25
Also published as: CN115070159B

Abstract

The application relates to a bridge assembly jig of a sensor, which comprises a base, a mounting bracket and a jig assembly; the fixture assembly is used for fixing the sensor, and the mounting bracket is rotatably connected to the base; a rotary fixing component is arranged between the base and the mounting bracket; the mounting bracket and the base can be relatively fixed through the rotary fixing component; the jig assembly is rotationally connected to the mounting bracket, and the jig assembly rotating shaft is perpendicular to the mounting bracket rotating shaft; and a rotary limiting component is arranged between the mounting bracket and the jig component, and the mounting bracket and the jig component are relatively fixed through the rotary limiting component. This application has the effect that the group's bridge process operation in making the sensor manufacturing is more convenient.

Description

Bridging tool of sensor

Technical Field

The application relates to the field of sensor tools, in particular to a bridge assembly tool of a sensor.

Background

At present, the sensor converts various signals into electric signals to be transmitted to a calculator, and has the characteristics of high precision, high transmission speed and the like, so that the sensor is widely applied to the field of high-precision measurement.

The manufacturing process of the sensor comprises elastomer processing, surface mounting, bridging, compensation, testing and sealing; the bridging is a process of connecting the strain gauges into a Wheatstone bridge according to the requirements of the sensor; the bridge assembling process comprises welding spot polishing, tin hanging, wire welding preparation and bridge circuit welding; in the related art, the bridging process often adopts a tool as a carrier to fix the sensor to be welded, and then the bridging process is completed in sequence.

For the related art, in most sensors, the bridges to be welded are distributed in different directions of the sensor, so that the welding angles are different; in the welding step of the bridge assembly process, the position of the sensor on the tool needs to be adjusted for many times, so that the operation is inconvenient.

Disclosure of Invention

In order to make the group bridge process operation in the sensor manufacturing more convenient, this application provides the group bridge tool of a sensor.

The application provides a bridging tool of sensor adopts following technical scheme:

a bridge assembly jig of a sensor comprises a base, a mounting bracket and a jig assembly; the fixture assembly is used for fixing the sensor, and the mounting bracket is rotatably connected to the base; a rotary fixing component is arranged between the base and the mounting bracket; the mounting bracket and the base can be relatively fixed through the rotary fixing component; the jig assembly is rotatably connected to the mounting bracket, and the jig assembly rotating shaft is perpendicular to the mounting bracket rotating shaft; and a rotary limiting component is arranged between the mounting bracket and the jig component, and the mounting bracket and the jig component are relatively fixed through the rotary limiting component.

By adopting the technical scheme, the sensor to be welded is fixed in the jig assembly, the operating angle of the sensor can be adjusted by vertically arranging the mounting bracket rotating shaft and the jig assembly rotating shaft without moving the position of the bridge assembly jig, all bridge assembly processes of the sensor can be completed by arranging the sensor into the jig assembly once, and the sensor does not need to be repeatedly moved, so that the operation is convenient.

Preferably, the rotating and fixing component comprises an elastic part and a limiting body, the mounting bracket is provided with a mounting hole, and the mounting hole is used for mounting the elastic part and the limiting body; the base is provided with limiting holes distributed along the circumferential direction of the rotating shaft of the mounting bracket; when the mounting hole is aligned with the limiting hole, the limiting body can be partially embedded into the limiting hole; and when the limiting body is partially embedded into the limiting hole, the elastic body can provide pressure for limiting the limiting body to be separated from the limiting hole.

By adopting the technical scheme, the rotary positioning assembly adopts a mode that the elastic body with one fixed end presses the limiting body, when the limiting body is matched with the limiting hole, the elastic body is compressed to provide pressure, and the limiting body is clamped in the limiting hole, so that the fixing effect is achieved; and tangential force is applied to the mounting bracket, so that the limiting body can be separated from the limiting hole, and the mounting bracket rotates to facilitate operation.

Preferably, the limiting body is a ball, and the elastic body is a spring; the spring and the ball are arranged along the direction of the mounting hole.

Through adopting above-mentioned technical scheme, when the cooperation between spring and the ball, the spring can provide more even ground pressure, and only need exert littleer tangential force and just enable the ball and roll out spacing hole.

Preferably, the mounting hole is a through hole, and the rotating and fixing component further comprises an adjusting piece connected to the through hole; the adjusting piece extends into one end, far away from the base, of the through hole, and one end, far away from the limiting body, of the elastic piece is abutted to the end, far away from the limiting body, of the elastic piece; the adjusting piece is used for adjusting the compression amount of the elastic piece.

Through adopting above-mentioned technical scheme, carry on spacingly through the regulating part to the elastomer, also can regulate and control the compression degree of elastomer through the regulating part to the fixed elasticity of adjustment.

Preferably, the adjusting part is a threaded connecting part, an internal thread matched with the threaded connecting part is arranged on the through hole, and the internal thread is arranged at the joint of the through hole and the threaded connecting part.

Through adopting above-mentioned technical scheme, the screw is convenient for adjust more, also can play certain guide effect to the spring simultaneously.

Preferably, the spacing holes are distributed at equal intervals, the number of the rotary fixing components is two or more, and the rotary fixing components are distributed.

By adopting the technical scheme, the limiting holes are distributed at equal intervals, so that the aim of uniformly adjusting the angle can be fulfilled; due to the arrangement of the plurality of rotary fixing assemblies, when the arc length between two rotary fixing assemblies can be integral multiples of the arc length between two adjacent limiting holes, the fixing is firmer; the arc length between two rotatory fixed subassemblies can be the non-integral multiple of arc length between two adjacent spacing holes, and fixed angle is more.

Preferably, the rotating fixing components are divided into at least two groups of combinations, and each group of combinations at least comprises two rotating fixing components; all the rotating and fixing components in each group of combination bodies can be embedded into the limiting holes at the same time; when the rotary fixing component in one group of the combination body is embedded into the limiting hole, the rotary fixing component in at least another group of the combination body is staggered with the limiting hole.

Through adopting above-mentioned technical scheme, when fixed firm, fixed angle is more.

Preferably, the jig assembly comprises a rotating frame and a sensor clamping structure, and the rotation limiting assembly is arranged between the mounting bracket and the rotating frame; the sensor clamping structure comprises two clamping plates, two fixing blocks and an elastic resetting piece, the two clamping plates are connected to the rotating frame in a sliding mode, and the two fixing blocks are fixedly connected to the rotating frame; one end of the elastic reset piece is connected to the clamping plate, and the other end of the elastic reset piece is connected to the fixing block; the clamping plates are provided with depressions, and the depressions on the two clamping plates form a clamping space adapted to the appearance of the sensor; under the elasticity piece natural state that resets, two splint paste tightly.

By adopting the technical scheme, the fixing block and the clamping plate are connected through the elastic body, the elastic resetting piece is compressed by pressing the clamping plate, the clamping space is enlarged, and the sensor is placed in the clamping space; the clamping plate is loosened, the elastic resetting piece naturally extends, and the clamping plate resets; the whole operation process of putting the sensor into the device is more convenient.

Preferably, a limiting part is arranged on the rotating frame, and the limiting part is used for enabling one side of the clamping plate, which is far away from the other clamping plate, to abut against.

Through adopting above-mentioned technical scheme, the locating part can restrict the slip of splint, prevents that the transition of splint from sliding.

Preferably, the jig assembly further comprises a threaded rod, the threaded rod is rotatably connected to the rotating frame, and the threaded rod extends along the sliding direction of the clamping plate; the threaded rod is provided with an external thread in a left-handed direction from the clamping space to one end and an external thread in a right-handed direction to the other end; and the two clamping plates are in threaded fit with the threaded rod.

Through adopting above-mentioned technical scheme, can control two splint equidistance through rotating the threaded rod and remove, guarantee to press from both sides tight space behind the sensor of putting into at every turn and be in same position, the operation of being convenient for more.

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

1. all bridging processes of the sensors can be completed by mounting the sensors into the jig assembly at one time, repeated sensor movement is not needed, and operation is facilitated;

2. the operation angle of the sensor bridge can be adjusted at any time according to the requirement;

3. the tightness of the clamping space can be adjusted by pressing, and after the sensor is placed in the clamping space, the elastic body provides elastic force to reset the clamping plate and clamp the sensor.

Drawings

Fig. 1 is an isometric view of a bridge assembly fixture for a sensor.

Fig. 2 is an exploded view of a bridge assembly fixture of the sensor.

Fig. 3 is an enlarged view of the rotating fixture assembly.

Fig. 4 is an enlarged view of the rotation limiting assembly.

Fig. 5 is an enlarged view of the sensor clamping structure.

Description of reference numerals: 1. a base; 11. a limiting hole; 2. mounting a bracket; 3. a jig component; 31. a rotating frame; 311. a limiting member; 32. a sensor clamping structure; 321. a splint; 3211. a sheet; 3212. a clamping block; 3213. pressing into blocks; 322. a fixed block; 323. an elastic reset member; 33. an upper pressure plate; 4. a rotating and fixing component; 41. an elastic member; 42. a limiting body; 43. an adjustment member; 5. and a rotation limiting assembly.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

In the related technology, most of bridging procedures in the sensor manufacturing procedure fix the sensor through a tool; some sensors with complex bridge combination modes have complex welding steps, and the angle needs to be adjusted for many times in the welding process, so that a better operation angle is found, and the error welding or the insufficient welding is reduced; if the sensor is fixed through the tool, for the sensor with the complex bridge assembly, the tool needs to be disassembled for many times, the angle is adjusted, and then the sensor is fixed again when the welding step in the bridge assembly process is performed on the sensor with the complex bridge assembly; or the welding step can be completed only by changing the operation angle by moving the operator to the self-standing position for many times.

The embodiment of the application discloses bridging tool of sensor.

Example 1

Referring to fig. 1-2, a bridge assembly jig of a sensor comprises a base 1, a mounting bracket 2 and a jig assembly 3, wherein the base 1 is a disc, the mounting bracket 2 is rotatably connected to the disc, and the jig assembly 3 is rotatably connected to a rotating frame 31; the jig assembly 3 comprises a rotating frame 31, a sensor clamping structure 32 and an upper pressure plate 33 which are sequentially arranged; the rotating shaft of the mounting bracket 2 is vertical to the rotating shaft of the jig component 3, and the jig component 3 is fixed on the rotating frame 31; the upper pressing plate 33 is connected to the rotating frame 31 for pressing the sensor clamping structure 32 to prevent the sensor clamping structure 32 from tilting.

Specifically, referring to fig. 2-3, the mounting bracket 2 includes a bottom rod and two vertical rods symmetrically fixed on the bottom rod; the disc center is equipped with the pivot, and the sill bar center is equipped with the pivot mounting hole, and pivot extension direction perpendicular to base 1 plane, base 1 and installing support 2 are through pivot swivelling joint, and the laminating of bottom surface and base 1 up end under the sill bar. A rotary fixing component 4 is arranged between the bottom rod of the mounting bracket 2 and the base 1, and specifically, the rotary fixing component 4 comprises an elastic part 41 and a limiting body 42; in this embodiment, the elastic member 41 is a spring, the position-limiting body 42 is a ball, in other embodiments, the elastic member 41 is a spring, and the position-limiting body 42 is a roller or a slider with a chamfer at the end close to the base 1; be equipped with on the base 1 along base 1 central circumference evenly distributed's spacing hole 11, in this embodiment, spacing hole 11 is the round hole, and spacing hole 11 is square hole or regular hexagon hole in other embodiments, and the round hole is used for supplying the ball embedding.

Referring to fig. 3, two mounting holes are symmetrically arranged on the bottom rod of the mounting bracket 2, the extending direction of the mounting holes is perpendicular to the extending direction of the bottom rod, and when the mounting bracket 2 rotates, the rotating radius of the center of the mounting hole is equal to the distance from the center of the limiting hole 11 to the center of the base 1; the mounting hole is a through hole, an adjusting piece 43 is arranged in the through hole, the adjusting piece 43 is a screw in the embodiment, and the adjusting piece 43 is a rubber plug in other embodiments; one end of the through hole, which is close to the bottom rod and is far away from the end face of the base 1, is provided with an internal thread matched with the screw, and the screw, the spring and the ball are sequentially arranged in the through hole, wherein the spring provides pressure for the ball; the compression amount of the spring is adjusted through the extending amount of the adjusting screw in the through hole by rotating the screw, so that the pressure applied to the ball is adjusted, and the difficulty of the ball rolling away from the round hole is adjusted. The mounting bracket 2 is fixed after being embedded into the round hole through the ball, and the ball can roll away from the round hole by applying tangential force to the mounting bracket 2, so that the mounting bracket 2 rotates.

In addition, referring to fig. 2 and 4, the rotating frame 31 includes a semicircular roller and a fixing plate, wherein the semicircular roller is a hollow semicircular cylinder, which is beneficial to reducing the overall weight of the rotating frame 31; semicircular cylinder passes through pivot swivelling joint in installing support 2, and is concrete, and two semicircle face centers of semicircular cylinder are respectively through two montant swivelling joints on pivot and the rotating frame 31, connect the back, and two semicircle faces and two montant laminating of semicircular cylinder, semicircular cylinder's pivot perpendicular to montant extending direction. A rotation limiting component 5 is arranged between the mounting bracket 2 and the jig component 3, and in the embodiment, the rotation limiting component 5 is the same as the rotation fixing component 4; in other embodiments, the rotation limiting assembly 5 may also adopt other positioning structures, such as a bolt fastening mode. Wherein, be equipped with the round hole that distributes around the pivot circumference of rotating frame 31 on two semicircle faces of semicircle cylinder, be equipped with the through-hole on two montants, the through-hole is kept away from the semicircle face and is equipped with the internal thread with the screw adaptation, and the screw passes through the internal thread to be connected with the through-hole, and screw, spring and ball have arranged in proper order in the through-hole.

Referring to fig. 2, a groove structure is arranged on the rectangular surface of the semicircular roller, the fixing plate is a rectangle with the width consistent with that of the rectangular surface of the semicircular roller, the fixing plate is fixed on the semicircular roller through the groove structure, and the groove structure enables the rotating shaft of the rotating frame 31 to penetrate through the sensor clamping structure 32; four limiting parts 311 are arranged at the upper four corners of the surface of the fixing plate close to the sensor clamping structure 32, where the limiting parts 311 are stoppers for limiting the movement of the sensor clamping structure 32.

Referring to fig. 5, in particular, the sensor clamping structure 32 includes two clamping plates 321, two fixing blocks 322, and four elastic restoring members 323; the elastic reset piece 323 is a spring, the two fixing blocks 322 are cuboids and are fixed on the fixing plate through screws, and the screw points of the fixed screws are arranged in the fixing blocks 322; the long sides of the two fixing blocks 322 are parallel to the long sides of the fixing plate, and the fixing blocks 322 are distributed symmetrically with respect to the center of the fixing plate. The clamping plate 321 comprises two parallel plates 3211, a clamping block 3212 and a pressing block 3213, wherein the thickness of the plate 3211 is half of the distance between the upper pressing plate 33 and the fixing plate, and the distance between the two plates 3211 is the length of the long side of the fixing block 322; the thickness of the clamp block 3212 is equal to the distance between the upper press plate 33 and the fixing plate, the length is equal to the distance between the two plates 3211, and the width is less than half of the distance between the two fixing blocks 322; the thickness direction of the clamping block 3212 is perpendicular to the surface of the fixing plate, two end faces of the clamping block 3212 along the length direction are respectively connected to the same end of the opposite side faces of the two plates 3211, and after the connection is completed, the clamping block 3212 is arranged between the two fixing blocks 322; the clamp block 3212 is kept away from fixed block 322 one end and is equipped with the depressed part, and the depressed part is the column that perpendicular clamp block 3212 length direction extends, and two faces that the depressed part intercommunication clamp block 3212 is on a parallel with fixed plate and top board 33 opposite face, and the middle zone of clamp block 3212 tip is located to the depressed part, and the tight space of clamp is constituteed in the depressed part of two clamp blocks 3212, and when two clamp blocks 3212 laminated, the tight space adaptation of clamp was in the sensor size.

Referring to fig. 5, the pressing block 3213 is T-shaped, two ends of the pressing block 3213 are connected to the end faces of the two plates 3211 on the same side, and the pressing block 3213 is disposed outside the space between the two fixing blocks 322; the pressing block 3213 is provided with two bolts, the extending direction of the bolts is perpendicular to the length direction of the fixing block 322, the bolts are arranged between the two plates 3211, the bolts are sleeved with springs, and the other ends of the springs abut against the fixing block 322. The two clamping plates 321 are arranged at the plate pieces 3211 in an up-and-down manner, and the plate pieces 3211 of the two clamping plates 321 can slide relatively; further, the plate 3211 of the upper plate 321 is attached to the upper platen 33, and the plate 3211 of the lower plate 321 is attached to the fixing plate.

Referring to fig. 2 and 5, by pressing the pressing block 3213, the spring contracts, the two clamping blocks 3212 are separated, the clamping space becomes larger, the sensor is placed into the clamping space through the circular hole on the upper pressing plate 33, then the pressing block 3213 is released, the spring is reset, the two clamping blocks 3212 are attached, and the sensor is clamped by the abutting force of the spring; through the scheme, the sensor is positioned at the rotating center of the jig assembly 3, and the center position of the sensor cannot be changed while the operation angle of the sensor is adjusted.

Referring to fig. 2, the shape of the upper pressing plate 33 is the same as that of the fixing plate, the upper pressing plate 33 is connected with a stopper on the fixing plate through a screw, and the upper pressing plate 33 clamps the sensor clamping structure 32 together with the fixing plate; a circular hole is formed in the center of the upper plate 33, and the position of the circular hole corresponds to the clamping space for the sensor to pass through.

The implementation principle of the embodiment 1 is as follows: the sensor clamping structure 32 is loosened by pressing the pressing block 3213, the clamping space is enlarged, the sensor is placed in the clamping space through the circular hole on the upper pressing plate 33, then the pressing block 3213 is loosened, the spring is reset, and the clamping space clamps the sensor; and then the jig component 3 is adjusted to a proper operation angle, the mounting bracket 2 is fixed by the rotary fixing component 4, the jig component 3 is fixed by the rotary limiting component 5, and finally welding is carried out.

Example 2

The embodiment of the application discloses bridging tool of sensor, this embodiment and embodiment 1's difference lie in that the sill bar of rotating frame 31 has two, and the mutual perpendicular is arranged, all is equipped with rotatory fixed subassembly 4 between the both ends of every sill bar and the base 1.

The implementation principle of the embodiment 2 is as follows: through four rotatory fixed subassembly 4 fixed simultaneously, can provide bigger resistance for base 1 and the relative slip of rotating frame 31, fixed effect is better.

Example 3

The embodiment of the application discloses bridging tool of sensor, this embodiment and embodiment 1's difference lie in that the sill bar of rotating frame 31 has two, and the contained angle is 7.5 between two sill bars, is equipped with 24 round holes on the base 1, and the angle that the arc length at two adjacent round hole centers corresponds is 15.

The implementation principle of the embodiment 3 is as follows: the rotating frame 317.5 ° can be fixed again, and by the technical solution in this embodiment, more rotating angles of the rotating frame 31 can be fixed.

Example 4

The embodiment of the application discloses a bridge assembly jig of a sensor, and the difference between the embodiment and the embodiment 1 is that a threaded rod is arranged between a clamping plate 321 and a fixing plate, the threaded rod extends along the sliding direction of the clamping plate 321, an external thread in the left-handed direction is arranged on the threaded rod from a clamping space to one end, an external thread in the right-handed direction is arranged on the other end, and correspondingly, a thread which is matched with the threaded rod is arranged on the clamping plate 321 at the contact part of the lower surface of a clamping block 3212 and a rotating shaft; one end of the threaded rod extends beyond the outer surface of the jig component 3, and the end is provided with a rotary operating handle.

The implementation principle of the embodiment 4 is as follows: can control two splint 321 equidistance through rotating the threaded rod and remove, guarantee to press from both sides tight space behind the sensor of putting into at every turn and be in same position, can make the spring all carry out the same elastic deformation at every turn, prevent that the bridge assembly tool of sensor from leading to spring elastic coefficient to produce the difference because of using the number of times too much and the spring atress is inhomogeneous, press from both sides tight space after reseing and no longer be in the rotation center of tool subassembly 3.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a bridging tool of sensor which characterized in that: comprises a base (1), a mounting bracket (2) and a jig component (3); the jig component (3) is used for fixing the sensor, and the mounting bracket (2) is rotatably connected to the base (1); a rotary fixing component (4) is arranged between the base (1) and the mounting bracket (2); the mounting bracket (2) and the base (1) can be relatively fixed through the rotary fixing component (4); the jig component (3) is rotatably connected to the mounting bracket (2), and the rotating shaft of the jig component (3) is perpendicular to the rotating shaft of the mounting bracket (2); a rotary limiting component (5) is arranged between the mounting bracket (2) and the jig component (3), and the mounting bracket (2) and the jig component (3) are relatively fixed through the rotary limiting component (5).

2. The bridge assembly jig of the sensor according to claim 1, wherein: the rotary fixing component (4) comprises an elastic piece (41) and a limiting body (42), the mounting bracket (2) is provided with a mounting hole, and the mounting hole is used for mounting the elastic piece and the limiting body (42); the base (1) is provided with limiting holes (11) distributed along the circumferential direction of the rotating shaft of the mounting bracket (2); when the mounting hole is aligned with the limiting hole (11), the limiting body (42) can be partially embedded into the limiting hole (11); and when the limiting body (42) is partially embedded into the limiting hole (11), the elastic body can provide pressure for limiting the separation of the limiting body (42) from the limiting hole (11) for the limiting body (42).

3. The bridge assembly jig of a sensor of claim 2, characterized in that: the limiting body (42) is a ball, and the elastic body is a spring; the spring and the ball are arranged along the direction of the mounting hole.

4. The bridge assembly jig of a sensor of claim 2, characterized in that: the mounting hole is a through hole, and the rotary fixing component (4) further comprises an adjusting piece (43) connected to the through hole; the adjusting piece (43) extends into one end, far away from the base (1), of the through hole, and one end, far away from the limiting body (42), of the elastic piece (41) is abutted; the adjusting member (43) is used for adjusting the compression amount of the elastic member (41).

5. The bridge assembly fixture of sensor according to claim 4, wherein: the adjusting piece (43) is a threaded connecting piece, an internal thread matched with the threaded connecting piece is arranged on the through hole, and the internal thread is arranged at the joint of the through hole and the threaded connecting piece.

6. The bridge assembly jig of a sensor of claim 2, characterized in that: equidistance distributes between spacing hole (11), just rotatory fixed subassembly (4) quantity is two or more, distribute between rotatory fixed subassembly (4).

7. The bridge assembly jig of the sensor according to claim 6, wherein: the rotary fixing components (4) are divided into at least two groups of combinations, and each group of combinations at least comprises two rotary fixing components (4); all the rotary fixing components (4) in each group of combination bodies can be embedded into the limiting holes (11) at the same time; when the rotating fixing component (4) in one group of the combination body is embedded into the limiting hole (11), the rotating fixing component (4) in at least another group of the combination body is staggered with the limiting hole (11).

8. The bridge assembly jig of the sensor according to claim 1, wherein: the jig assembly (3) comprises a rotating frame (31) and a sensor clamping structure (32), and the rotation limiting assembly (5) is arranged between the mounting bracket (2) and the rotating frame (31); the sensor clamping structure (32) comprises two clamping plates (321), two fixing blocks (322) and an elastic resetting piece (323), the two clamping plates (321) are connected to the rotating frame (31) in a sliding mode, and the two fixing blocks (322) are fixedly connected to the rotating frame (31); one end of the elastic resetting piece (323) is connected to the clamping plate (321), and the other end of the elastic resetting piece is connected to the fixing block (322); the clamping plates (321) are provided with concave parts, and the concave parts on the two clamping plates (321) form a clamping space adapted to the appearance of the sensor; and under the natural state of the elastic resetting piece (323), the two clamping plates (321) are tightly attached.

9. The bridge assembly jig of a sensor of claim 8, wherein: a limiting piece (311) is arranged on the rotating frame (31), and the limiting piece (311) is used for enabling one side, away from the other clamping plate (321), of one clamping plate (321) to abut against.

10. The bridge assembly jig of a sensor of claim 8, wherein: the jig assembly (3) further comprises a threaded rod which is rotatably connected to the rotating frame (31), and the threaded rod extends along the sliding direction of the clamping plate (321); the threaded rod is provided with an external thread in a left-handed direction from the clamping space to one end and an external thread in a right-handed direction to the other end; the two clamping plates (321) are in threaded fit with the threaded rod.