CN113701607B

CN113701607B - Thread detection device

Info

Publication number: CN113701607B
Application number: CN202111251524.4A
Authority: CN
Inventors: 董锋; 陈永臻; 田宝贵; 郭桂谦; 王永刚; 朱本东
Original assignee: SHANDONG GAOQIANG FASTENER CO Ltd
Current assignee: SHANDONG GAOQIANG FASTENER CO Ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-01-28
Anticipated expiration: 2041-10-27
Also published as: CN113701607A

Abstract

The invention relates to the technical field of detection equipment, in particular to a thread detection device, which comprises a rotary table, wherein a plurality of placing grooves are uniformly formed in the top of the rotary table and are distributed in an annular shape, the placing grooves are communicated with the outer wall of the circumference of the rotary table, and a plurality of connecting rods are uniformly arranged on the top of the rotary table; the synchronous disc is positioned above the rotary disc, the top of the connecting rod is connected with the bottom of the synchronous disc, a plurality of groups of cylinders are uniformly distributed on the synchronous disc in an annular shape, a movable end of the bottom of each cylinder is provided with a gear, and the gear is positioned between the rotary disc and the synchronous disc; the equipment can realize the automatic proceeding of the thread detection work, simplify the detection mode, save labor, improve the working efficiency and improve the practicability.

Description

Thread detection device

Technical Field

The invention relates to the technical field of detection equipment, in particular to a thread detection device.

Background

As is well known, the bolt mainly comprises nut and threaded rod, and the quality testing of bolt detects the tooth form of screw thread on it usually, conveniently makes the screw thread satisfy its processing requirement and installation requirement, and current detection mode is generally that the workman detects the screw thread one by one through check out test set such as tooth rule or screw thread lead to rule, and this kind of detection mode efficiency is lower, and it is great to consume the manpower.

Disclosure of Invention

In order to solve the above technical problems, the present invention provides a thread detecting device.

In order to achieve the purpose, the invention adopts the technical scheme that:

thread detection device, comprising:

the top of the rotary table is uniformly provided with a plurality of placing grooves which are distributed in an annular shape, the placing grooves are communicated with the outer wall of the circumference of the rotary table, and the top of the rotary table is uniformly provided with a plurality of connecting rods;

the synchronous disc is positioned above the rotary disc, the top of the connecting rod is connected with the bottom of the synchronous disc, a plurality of groups of cylinders are uniformly distributed on the synchronous disc in an annular shape, a movable end of the bottom of each cylinder is provided with a gear, and the gear is positioned between the rotary disc and the synchronous disc;

two rows of teeth, two rows of teeth being located between the turntable and the synchronization disc, and one row of teeth being located outside the plurality of gears, and the other row of teeth being located inside the plurality of gears, the two rows of teeth being staggered in position, the rows of teeth being in mesh with the gears;

the connecting mechanism is installed to the gear bottom, threaded sleeve gauge is installed to the connecting mechanism bottom.

Furthermore, the connecting mechanism comprises a sliding sleeve arranged at the bottom of the gear, a first spring is arranged in the sliding sleeve, a polygonal sliding rod is arranged at the bottom of the first spring, the polygonal sliding rod is connected with the sliding sleeve in a sliding sleeved mode, a tension detecting mechanism is arranged at the bottom of the polygonal sliding rod, and the tension detecting mechanism is connected with the thread bushing gauge.

Furthermore, the tension detection mechanism comprises a connecting disc arranged at the bottom of the polygonal sliding rod, a base is arranged at the bottom of the connecting disc, and the base is rotatably connected with the thread bushing gauge;

a fixing outer sleeve is sleeved on the outer side of the base, and the top of the fixing outer sleeve is fixed to the bottom of the connecting disc;

install the tensile force detector on the fixed overcoat inside wall, install the leaf spring on the tensile force detector, the outer end of leaf spring is fixed on the outer wall of screw thread shell rule.

The base plate is positioned below the turntable, an annular guide rail is arranged on the base plate, an annular sliding groove is rotatably arranged on the annular guide rail, and the top of the annular sliding groove is connected with the bottom of the turntable;

a plurality of first mounting plates are mounted at the top of the bottom plate and connected with the outer walls of the gear rows positioned at the outer sides of the gears;

sliding contact has the arc flange on the circumference outer wall of carousel, the arc flange is used for right the notch of standing groove on the carousel shelters from, evenly be provided with many second mounting panels on the outer wall of arc flange, second mounting panel bottom is fixed the bottom plate top.

Furthermore, a supporting column is installed at the top of the bottom plate, and the top of the supporting column penetrates through the rotary disc and is rotatably installed at the bottom of the synchronous disc;

a fixed disk is sleeved and fixed on the outer wall of the supporting column, the fixed disk is eccentrically positioned in the rotary disk, a plurality of first sliding blocks are uniformly and slidably mounted on the circumferential outer wall of the fixed disk, and a pushing mechanism is arranged on the outer wall of each first sliding block and connected with the rotary disk;

install the third mounting panel on the outer wall of support column, the third mounting panel with be located a plurality of gears inboards the tooth row is connected.

Furthermore, through holes are formed in the inner wall of the placing groove in the rotary table and are arranged along the radial direction of the rotary table

The pushing mechanism comprises two limiting baffles arranged in the through hole, a second spring is arranged between the two limiting baffles, sliding plates are arranged at two ends of the second spring, the sliding plates are positioned between the two limiting baffles, and the sliding plates are in sliding connection with the inner wall of the through hole;

a first push-pull rod is mounted on the sliding plate at one end of the second spring, the outer end of the first push-pull rod penetrates through a limiting baffle and is connected with the limiting baffle in a sliding mode, and a clamping plate is arranged at the outer end of the first push-pull rod;

the other end of the second spring is provided with a second push-pull rod, the outer end of the second push-pull rod penetrates through the other limiting baffle and is connected with the other limiting baffle in a sliding mode, and the outer end of the second push-pull rod is rotatably installed on the outer wall of the first sliding block.

Furthermore, the outer wall of the sliding sleeve is rotatably sleeved with a supporting sleeve, a second sliding block is installed on the outer wall of the supporting sleeve, and the second sliding block is slidably installed on the outer wall of the connecting rod.

Furthermore, worm teeth are uniformly arranged on the circumferential outer wall of the annular chute, a worm is meshed with the worm teeth of the annular chute, fourth mounting plates are rotatably mounted at two ends of the worm, the fourth mounting plates are fixed on the bottom plate, a motor is mounted on the fourth mounting plate at one end of the worm, and the motor is in transmission connection with the worm;

and the bottom plate is provided with a central control box, and the tension detector and the motor are in signal connection with the central control box.

Compared with the prior art, the invention has the beneficial effects that: rotating a turntable, the turntable drives a synchronous disc to synchronously rotate through a connecting rod, the synchronous disc drives a gear, a connecting mechanism and a thread bushing gauge on the synchronous disc to synchronously rotate through an air cylinder, the position of the thread bushing gauge corresponds to the position of a placing groove on the turntable and synchronously rotates, the gear rolls on a tooth row due to the meshing of the gear and the tooth row, so that the gear drives the connecting mechanism and the thread bushing gauge to rotate, the two tooth rows are respectively positioned at the inner side and the outer side of a plurality of gears, so that the gear sequentially rotates in a positive and negative two-way manner on the two tooth rows, the gear drives the thread bushing gauge to rotate, a bolt is fixed in the placing groove on the turntable, the turntable in a rotating state drives the bolt to synchronously rotate, when the gear is contacted with a first tooth row, the gear and the thread bushing gauge rotate in a positive direction, the air cylinder pushes the gear, the connecting mechanism and the thread bushing gauge to move downwards, and the bottom of the thread bushing gauge is contacted with the top of the bolt, because the screw thread shell gage is forward to be rotated, screw thread shell gage spiral shell dress is to the bolt, when the gear removed to the second tooth row on, screw thread shell gage antiport, screw thread shell gage and bolt separate gradually, because screw thread shell gage can normal spiral shell dress with the bolt is connected, thereby detect on the bolt screw thread profile of teeth and accord with the regulation requirement, when screw thread shell gage and the unable normal spiral shell dress of bolt are connected, the unable regulation requirement of satisfying of screw thread profile of teeth on the bolt, because the carousel rotates in succession, can realize the continuous detection processing to the screw thread, the automation that this equipment can realize screw thread detection work goes on, simplify detection methods, use manpower sparingly, and work efficiency is improved, and the practicality is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic sectional top view of the timing disk of FIG. 1;

FIG. 3 is a schematic right sectional view of the rotary plate of FIG. 1;

FIG. 4 is an enlarged view of the polygonal sliding bar of FIG. 3;

FIG. 5 is an enlarged view of a portion A of FIG. 3;

in the drawings, the reference numbers: 1. a turntable; 2. a connecting rod; 3. a synchronization disc; 4. a cylinder; 5. a gear; 6. a tooth row; 7. a thread bushing gauge; 8. a sliding sleeve; 9. a first spring; 10. a polygonal sliding rod; 11. a connecting disc; 12. a base; 13. fixing the outer sleeve; 14. a tension detector; 15. a plate spring; 16. a base plate; 17. an annular guide rail; 18. an annular chute; 19. a first mounting plate; 20. an arc-shaped flange; 21. a second mounting plate; 22. a support pillar; 23. fixing the disc; 24. a first slider; 25. a third mounting plate; 26. a limit baffle; 27. a second spring; 28. a sliding plate; 29. a first push-pull rod; 30. clamping a plate; 31. a second push-pull rod; 32. a support sleeve; 33. a second slider; 34. a worm; 35. a fourth mounting plate; 36. a motor; 37. and a central control box.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. This embodiment is written in a progressive manner.

As shown in fig. 1 to 5, a thread detecting apparatus of the present invention includes:

the rotary table comprises a rotary table 1, wherein a plurality of placing grooves are uniformly formed in the top of the rotary table 1 and are distributed in an annular shape, the placing grooves are communicated with the outer wall of the circumference of the rotary table 1, and a plurality of connecting rods 2 are uniformly arranged on the top of the rotary table 1;

the synchronous disc 3 is positioned above the rotary disc 1, the top of the connecting rod 2 is connected with the bottom of the synchronous disc 3, a plurality of groups of cylinders 4 are uniformly distributed on the synchronous disc 3 in an annular shape, a gear 5 is arranged at the movable end of the bottom of each cylinder 4, and the gear 5 is positioned between the rotary disc 1 and the synchronous disc 3;

two rows of teeth 6, two rows of teeth 6 being located between the turntable 1 and the synchronization disc 3, and one row of teeth 6 being located outside the plurality of gears 5, and the other row of teeth 6 being located inside the plurality of gears 5, the two rows of teeth 6 being staggered in position, the rows of teeth 6 meshing with the gears 5;

and a connecting mechanism is arranged at the bottom of the gear 5, and a thread bushing gauge 7 is arranged at the bottom of the connecting mechanism.

In the embodiment, a rotary table 1 is rotated, the rotary table 1 drives a synchronous disc 3 to synchronously rotate through a connecting rod 2, the synchronous disc 3 drives a gear 5, a connecting mechanism and a thread bushing gauge 7 thereon to synchronously rotate through an air cylinder 4, the position of the thread bushing gauge 7 corresponds to the position of a placing groove on the rotary table 1 and synchronously rotates, the gear 5 rolls on the tooth row 6 due to the meshing of the gear 5 and the tooth row 6, so that the gear 5 drives the connecting mechanism and the thread bushing gauge 7 to rotate, the two tooth rows 6 are respectively positioned at the inner side and the outer side of a plurality of gears 5, so that the gear 5 sequentially rotates in a positive and negative two directions on the two tooth rows 6, the gear 5 drives the thread bushing gauge 7 to rotate, a bolt is fixed in the placing groove on the rotary table 1, the rotary table 1 in a rotating state drives the bolt to synchronously rotate, when the gear 5 is contacted with the first tooth row 6, the gear 5 and the thread bushing gauge 7 positively rotate, the cylinder 4 promotes the gear 5, coupling mechanism and screw thread box gage 7 downstream, 7 bottoms of screw thread box gage are contacted with the bolt top, because 7 forward rotations of screw thread box gage, 7 spiral shell dresses of screw thread box gage are to the bolt, when 5 removal of gear is to on second tooth row 6, 7 reverse rotations of screw thread box gage, 7 and bolt separate gradually of screw thread box gage, because 7 and bolt normal spiral shell dress are connected, thereby detect that the screw thread profile accords with the regulation requirement on the bolt, when 7 and the unable normal spiral shell dress of bolt are connected of screw thread box gage, the unable regulation requirement of satisfying of screw thread profile on the bolt, because carousel 1 rotates in succession, can realize the continuous detection processing to the screw thread, the automation that this equipment can realize screw thread detection work is gone on, simplify the detection mode, use manpower sparingly, improve work efficiency, improve the practicality.

Preferably, the connecting mechanism includes a sliding sleeve 8 installed at the bottom of the gear 5, a first spring 9 is installed in the sliding sleeve 8, a polygonal sliding rod 10 is installed at the bottom of the first spring 9, the polygonal sliding rod 10 is connected with the sliding sleeve 8 in a sliding and sleeving manner, a tension detecting mechanism is arranged at the bottom of the polygonal sliding rod 10, and the tension detecting mechanism is connected with the thread gauge 7.

In this embodiment, the gear 5 drives the thread bushing gauge 7 to rotate through the sliding sleeve 8 and the polygonal sliding rod 10, when the thread bushing gauge 7 is screwed on the bolt, because the thread bushing gauge 7 rotates, the position of the thread bushing gauge 7 on the bolt moves, at this time, the thread bushing gauge 7 can drive the polygonal sliding rod 10 and the sliding sleeve 8 to move relatively through the tension detection mechanism, the polygonal sliding rod 10 slides in the sliding sleeve 8, meanwhile, the polygonal sliding rod 10 pulls the first spring 9 to deform elastically, through the sliding sleeve 8, the first spring 9 and the polygonal sliding rod 10, the thread bushing gauge 7 can be conveniently buffered while providing rotation power for the thread bushing gauge 7, and when the movement speed of the thread bushing gauge 7 is different from the movement speed of the sliding sleeve 8, the sliding sleeve 8 and the thread bushing gauge 7 keep rotating synchronously.

Preferably, the tension detection mechanism comprises a connecting disc 11 installed at the bottom of the polygonal sliding rod 10, a base 12 is installed at the bottom of the connecting disc 11, and the base 12 is rotatably connected with the thread bushing gauge 7;

a fixing outer sleeve 13 is sleeved on the outer side of the base 12, and the top of the fixing outer sleeve 13 is fixed to the bottom of the connecting disc 11;

install tensile force detector 14 on the fixed overcoat 13 inside wall, install leaf spring 15 on the tensile force detector 14, the outer end of leaf spring 15 is fixed on the outer wall of screw thread guiding rule 7.

In this embodiment, tensile testing appearance 14 detects the rotational tension of screw thread compasses 7 through leaf spring 15, when the flaw appears in the screw thread profile on the bolt, screw thread compasses 7 can't normally rotate on the bolt, screw thread compasses 7 and sliding sleeve 8 produce relative rotation this moment, screw thread compasses 7 and base 12 produce relative rotation this moment, screw thread compasses 7 pass through leaf spring 15 to tensile testing appearance 14 pulling force crescent, when tensile testing appearance 14 detects the pulling force and reaches the specified value, stop rotating carousel 1, equipment stop operation this moment, it can to take off the bolt that has the flaw.

As a preferable mode of the above embodiment, the turntable device further includes a bottom plate 16, the bottom plate 16 is located below the turntable 1, an annular guide rail 17 is mounted on the bottom plate 16, an annular chute 18 is rotatably mounted on the annular guide rail 17, and the top of the annular chute 18 is connected with the bottom of the turntable 1;

a plurality of first mounting plates 19 are mounted at the top of the bottom plate 16, and the first mounting plates 19 are connected with the outer walls of the tooth rows 6 positioned outside the gears 5;

sliding contact has arc flange 20 on the circumference outer wall of carousel 1, arc flange 20 be used for right the notch of the standing groove on carousel 1 shelters from, evenly be provided with many second mounting panels 21 on the outer wall of arc flange 20, second mounting panel 21 bottom is fixed bottom 16 tops.

In this embodiment, when carousel 1 rotates, carousel 1 drives annular chute 18 and rotates on ring rail 17, and first mounting panel 19 supports the row of teeth 6 that is located the multiple gears 5 outside, through setting up arc flange 20, can conveniently shelter from the notch position of the standing groove on carousel 1, avoids the bolt on carousel 1 to take place to incline and break away from the standing groove when the conveying, detects the completion back when the bolt, and the open position of bolt accessible arc flange 20 is discharged.

As a preference of the above embodiment, a supporting column 22 is installed on the top of the bottom plate 16, and the top of the supporting column 22 passes through the turntable 1 and is rotatably installed at the bottom of the synchronization disk 3;

a fixed disk 23 is fixed on the outer wall of the supporting column 22 in a sleeved mode, the fixed disk 23 is eccentrically located in the rotary disk 1, a plurality of first sliding blocks 24 are evenly installed on the circumferential outer wall of the fixed disk 23 in a sliding mode, a pushing mechanism is arranged on the outer wall of each first sliding block 24, and the pushing mechanism is connected with the rotary disk 1;

a third mounting plate 25 is mounted on the outer wall of the support column 22, and the third mounting plate 25 is connected with the tooth row 6 located inside the plurality of gears 5.

In this embodiment, the supporting posts 22 are provided to support the fixed tray 23, the synchronization tray 3 and the third mounting plate 25, when the rotary disc 1 rotates, the rotary disc 1 drives the first slide block 24 to slide on the fixed disc 23 through the pushing mechanism, because the fixed disk 23 is eccentrically positioned in the rotating disk 1, when the outer wall of the fixed disk 23 is close to the inner wall of the rotating disk 1, the fixed disc 23 pushes the pushing mechanism to extrude and fix the bolt in the placing groove through the first slider 24, at this time, the thread form on the bolt is detected by the thread gauge 7, when the outer wall of the fixed disk 23 is far away from the inner wall of the rotary disk 1, the fixed disk 23 pulls the pushing mechanism to be separated from the bolt in the placing groove through the first sliding block 24, at the moment, the thread gauge 7 is separated from the bolt, thereby realize carrying out the extrusion fixed purpose to the bolt in the standing groove, avoid screw thread rule 7 to detect the bolt time measuring, the bolt is followed screw thread rule 7 synchronous rotation in the standing groove.

Preferably, the turntable 1 is provided with through holes on the inner wall of the placing groove, and the through holes are along the radial direction of the turntable 1

The pushing mechanism comprises two limiting baffles 26 arranged in the through hole, a second spring 27 is arranged between the two limiting baffles 26, sliding plates 28 are arranged at two ends of the second spring 27, the sliding plates 28 are positioned between the two limiting baffles 26, and the sliding plates 28 are in sliding connection with the inner wall of the through hole;

a first push-pull rod 29 is arranged on the sliding plate 28 at one end of the second spring 27, the outer end of the first push-pull rod 29 penetrates through a limit baffle 26 and is connected with the limit baffle in a sliding manner, and a clamping plate 30 is arranged at the outer end of the first push-pull rod 29;

a second push-pull rod 31 is arranged at the other end of the second spring 27, the outer end of the second push-pull rod 31 penetrates through the other limit baffle 26 and is connected with the other limit baffle in a sliding mode, and the outer end of the second push-pull rod 31 is rotatably installed on the outer wall of the first sliding block 24.

In this embodiment, when the turntable 1 rotates, the turntable 1 drives the limit baffle 26, the second spring 27, the sliding plate 28, the first push-pull rod 29, the clamping plate 30 and the second push-pull rod 31 to rotate synchronously, the second push-pull rod 31 drives the first slider 24 to slide on the fixed disk 23, because the fixed disk 23 is eccentrically located in the turntable 1, the fixed disk 23 drives the second push-pull rod 31 to move along the radial direction of the turntable 1 through the first slider 24, the second push-pull rod 31 drives the sliding plate 28 and the second spring 27 thereon to move synchronously, the second spring 27 drives the other sliding plate 28, the first push-pull rod 29 and the clamping plate 30 thereon to move synchronously, when the bolts need to be fixed, the first push-pull rod 29 pushes the clamping plate 30 into the placing groove, and the clamping plate 30 performs extrusion fixing treatment on the bolts in the placing groove, at this time, the bolts in the placing groove are tightly attached to the inner wall of the arc-shaped retaining edge 20, thereby achieving the purpose of extrusion fixing of the bolts, through setting up second spring 27, can conveniently cushion cardboard 30 and bolt, conveniently carry out the elastic extrusion processing to the bolt.

As a preferred advantage of the above embodiment, the outer wall of the sliding sleeve 8 is rotatably sleeved with a supporting sleeve 32, the outer wall of the supporting sleeve 32 is provided with a second sliding block 33, and the second sliding block 33 is slidably mounted on the outer wall of the connecting rod 2.

In this embodiment, when the sliding sleeve 8 reciprocates, the sliding sleeve 8 drives the second slider 33 through supporting the cover 32 and slides on the connecting rod 2, and when the sliding sleeve 8 rotated, the sliding sleeve 8 was supporting the internal rotation of cover 32, supported cover 32 and second slider 33 through setting up, can conveniently supported the sliding sleeve 8 to improve the stability when screw thread set rule 7 removed, conveniently make the normal spiral shell of screw thread set rule 7 to the bolt on.

As a preferable mode of the above embodiment, the outer circumferential wall of the annular chute 18 is uniformly provided with worm teeth, the worm teeth of the annular chute 18 are engaged with a worm 34, both ends of the worm 34 are rotatably provided with fourth mounting plates 35, the fourth mounting plates 35 are fixed on the bottom plate 16, the fourth mounting plates 35 at one end of the worm 34 are provided with a motor 36, and the motor 36 is in transmission connection with the worm 34;

a central control box 37 is mounted on the bottom plate 16, and the tension detector 14 and the motor 36 are in signal connection with the central control box 37.

In this embodiment, the motor 36 drives the annular chute 18 to rotate through the worm 34, so as to drive the equipment to operate, when the pressure detected by the tension detector 14 reaches a specified value, the tension detector 14 transmits a signal to the central control box 37, and the central control box 37 controls to turn off the motor 36, so as to control the equipment to stop operating.

According to the thread detection device, the installation mode, the connection mode or the arrangement mode are common mechanical modes, and the thread detection device can be implemented as long as the beneficial effects of the thread detection device can be achieved; the thread gauge 7, the tension detector 14 and the central control box 37 are commercially available.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A thread detecting device, comprising:

the device comprises a turntable (1), wherein a plurality of placing grooves are uniformly formed in the top of the turntable (1) and are distributed in an annular shape, the placing grooves are communicated with the outer wall of the circumference of the turntable (1), and a plurality of connecting rods (2) are uniformly arranged on the top of the turntable (1);

the synchronous disc (3) is positioned above the rotary disc (1), the top of the connecting rod (2) is connected with the bottom of the synchronous disc (3), a plurality of groups of cylinders (4) are uniformly distributed on the synchronous disc (3) in an annular shape, a gear (5) is installed at the movable end of the bottom of each cylinder (4), and the gear (5) is positioned between the rotary disc (1) and the synchronous disc (3);

two rows of teeth (6), two rows of teeth (6) being located between the rotary disc (1) and the synchronizing disc (3), and one row of teeth (6) being located outside a plurality of gears (5), the other row of teeth (6) being located inside a plurality of gears (5), the two rows of teeth (6) being staggered in position, the rows of teeth (6) meshing with the gears (5);

the bottom of the gear (5) is provided with a connecting mechanism, and the bottom of the connecting mechanism is provided with a thread bushing gauge (7);

the connecting mechanism comprises a sliding sleeve (8) arranged at the bottom of the gear (5), a first spring (9) is arranged in the sliding sleeve (8), a polygonal sliding rod (10) is arranged at the bottom of the first spring (9), the polygonal sliding rod (10) is connected with the sliding sleeve (8) in a sliding and sleeving manner, a tension detecting mechanism is arranged at the bottom of the polygonal sliding rod (10), and the tension detecting mechanism is connected with the thread bushing gauge (7);

the tension detection mechanism comprises a connecting disc (11) arranged at the bottom of the polygonal sliding rod (10), a base (12) is arranged at the bottom of the connecting disc (11), and the base (12) is rotatably connected with the thread bushing gauge (7);

a fixing outer sleeve (13) is sleeved on the outer side of the base (12), and the top of the fixing outer sleeve (13) is fixed to the bottom of the connecting disc (11);

install tensile force detector (14) on fixed overcoat (13) inside wall, install leaf spring (15) on tensile force detector (14), the outer end of leaf spring (15) is fixed on the outer wall of screw thread shell rule (7).

2. The thread detecting device according to claim 1, further comprising a bottom plate (16), wherein the bottom plate (16) is located below the rotary table (1), an annular guide rail (17) is mounted on the bottom plate (16), an annular sliding groove (18) is rotatably mounted on the annular guide rail (17), and the top of the annular sliding groove (18) is connected with the bottom of the rotary table (1);

a plurality of first mounting plates (19) are mounted at the top of the bottom plate (16), and the first mounting plates (19) are connected with the outer walls of the tooth rows (6) positioned on the outer sides of the gears (5);

sliding contact has arc flange (20) on the circumference outer wall of carousel (1), arc flange (20) are used for right the notch of the standing groove on carousel (1) shelters from, evenly be provided with many second mounting panel (21) on the outer wall of arc flange (20), second mounting panel (21) bottom is fixed bottom plate (16) top.

3. A thread testing device according to claim 2, characterized in that a supporting column (22) is mounted on the top of said base plate (16), the top of said supporting column (22) passes through said rotary disk (1) and is rotatably mounted on the bottom of said synchronous disk (3);

a fixed disk (23) is fixed on the outer wall of the supporting column (22) in a sleeved mode, the fixed disk (23) is eccentrically located in the rotary disk (1), a plurality of first sliding blocks (24) are evenly installed on the outer wall of the circumference of the fixed disk (23) in a sliding mode, a pushing mechanism is arranged on the outer wall of each first sliding block (24), and the pushing mechanism is connected with the rotary disk (1);

install third mounting panel (25) on the outer wall of support column (22), third mounting panel (25) with be located a plurality of gears (5) inboard tooth row (6) are connected.

4. A thread detecting device according to claim 3, wherein the turntable (1) is provided with through holes on the inner wall of the placement groove, and the through holes are arranged along the radial direction of the turntable (1)

The pushing mechanism comprises two limiting baffles (26) arranged in the through hole, a second spring (27) is arranged between the two limiting baffles (26), sliding plates (28) are arranged at two ends of the second spring (27), the sliding plates (28) are positioned between the two limiting baffles (26), and the sliding plates (28) are in sliding connection with the inner wall of the through hole;

a first push-pull rod (29) is mounted on the sliding plate (28) at one end of the second spring (27), the outer end of the first push-pull rod (29) penetrates through a limiting baffle (26) and is connected with the limiting baffle in a sliding mode, and a clamping plate (30) is arranged at the outer end of the first push-pull rod (29);

a second push-pull rod (31) is arranged at the other end of the second spring (27), the outer end of the second push-pull rod (31) penetrates through the other limiting baffle (26) and is in sliding connection with the other limiting baffle, and the outer end of the second push-pull rod (31) is rotatably installed on the outer wall of the first sliding block (24).

5. The thread detecting device as claimed in claim 4, wherein a support sleeve (32) is rotatably sleeved on the outer wall of the sliding sleeve (8), a second sliding block (33) is mounted on the outer wall of the support sleeve (32), and the second sliding block (33) is slidably mounted on the outer wall of the connecting rod (2).

6. A thread detecting device according to claim 5, wherein the outer wall of the circumference of the annular chute (18) is uniformly provided with worm teeth, the worm teeth of the annular chute (18) are engaged with a worm (34), both ends of the worm (34) are rotatably provided with a fourth mounting plate (35), the fourth mounting plate (35) is fixed on the bottom plate (16), the fourth mounting plate (35) at one end of the worm (34) is provided with a motor (36), and the motor (36) is in transmission connection with the worm (34);

and a central control box (37) is installed on the bottom plate (16), and the tension detector (14) and the motor (36) are in signal connection with the central control box (37).