CN113775626B - High-assembly-precision torsional shear type bolt - Google Patents

High-assembly-precision torsional shear type bolt Download PDF

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Publication number
CN113775626B
CN113775626B CN202110965768.2A CN202110965768A CN113775626B CN 113775626 B CN113775626 B CN 113775626B CN 202110965768 A CN202110965768 A CN 202110965768A CN 113775626 B CN113775626 B CN 113775626B
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China
Prior art keywords
screw
assembly
torsional shear
bolt
shear type
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CN202110965768.2A
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Chinese (zh)
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CN113775626A (en
Inventor
张东
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Guizhou Hangrui Aviation Precision Parts Manufacturing Co ltd
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Guizhou Hangrui Aviation Precision Parts Manufacturing Co ltd
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Priority to CN202110965768.2A priority Critical patent/CN113775626B/en
Publication of CN113775626A publication Critical patent/CN113775626A/en
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Publication of CN113775626B publication Critical patent/CN113775626B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/06—Specially-shaped heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/143—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same for installing wire thread inserts or tubular threaded inserts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/041—Specially-shaped shafts
    • F16B35/042—Specially-shaped shafts for retention or rotation by a tool, e.g. of polygonal cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/282—Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Transmission Devices (AREA)

Abstract

The invention discloses a high-assembly-precision torsional shear type bolt, relates to the technical field of torsional shear type bolts, and solves the problems that the torsional shear type bolt used at present is of a mainly integrated structure, the bolt cannot be assembled rapidly, the fault tolerance of the integrated torsional shear type bolt is low, and the integrated torsional shear type bolt is difficult to take out again after torsional shear. The torsional shear type bolt with high assembly precision comprises a screw rod; the screw also comprises a ball seat and unidirectional ring teeth; the bottom of the screw is integrally provided with a ball seat; the top of the ball seat is integrally provided with unidirectional ring teeth in a surrounding manner; the outside of the screw is fixedly provided with a nut through threaded connection; through being provided with the piece of cutting, replaced original bolt integral type's structure, the size of cutting the piece of cutting reduces, can reduce manufacturing cost and manufacturing degree of difficulty, makes things convenient for the quick assembly of bolt to take out the degree of difficulty after the fracture is low, can remedy when the installation is makeed mistakes, and the screw rod of retrieving can reuse.

Description

High-assembly-precision torsional shear type bolt
Technical Field
The invention relates to the technical field of torsional shear bolts, in particular to a torsional shear bolt with high assembly precision.
Background
At present, the torsional shear type bolt is widely used in the market, and the torsional shear type bolt comprises a screw head, a screw rod, a torsion groove and a plum blossom head.
Retrieving for example the patent number CN209245033U discloses a high assembly precision's torsional shear type bolt, including the spiral shell head, the fastening groove has been seted up at the top of spiral shell head, just the bottom of spiral shell head is connected with the fastening end through the double-screw bolt, gasket and nut have been cup jointed respectively to the surface of fastening end, the bottom of fastening end is connected with the plum blossom head through the twist-off piece, this kind of high assembly precision's torsional shear type bolt is provided with connecting strip, twist-off piece, twist-off groove and plum blossom head, when installing the bolt, need twist-off the plum blossom head, because the twist-off groove of twist-off piece can make when the staff cuts off the plum blossom head, can make the effort that the staff spent less, and because the twist-off piece is hollow with connecting strip junction department, further makes to twist-off the plum blossom head can be more laborsaving, has reduced the condition that the plum blossom head is difficult to twist-off
For example, CN210484329U discloses a high assembly precision torsional shear type bolt, which comprises a bolt main body, the upper end fixedly connected with bolt head of bolt main body, the bottom fixedly connected with screw rod of bolt head, the surface threaded connection of screw rod has a nut main body, the last fixed surface of nut main body is connected with the rotation piece, the surface fixedly connected with first mounting panel of rotation piece upper surface, just first mounting panel evenly distributed, the upper end fixedly connected with bracing piece of first mounting panel, the upper end swing joint of bracing piece has the movable rod, the upper end fixedly connected with second mounting panel of movable rod, the bracing piece with the surface winding of movable rod has the spring. This kind of high assembly accuracy's torsional shear formula bolt promotes through the rotation nut main part and promotes the fixed work piece of clamp plate, plays buffering guard action through the spring, causes the damage to the bolt when avoiding the work piece to connect for a long time, and the clamp plate rotates when avoiding adjusting through rotating the piece.
However, the existing torsion shear type bolt mainly has an integral structure, can not be assembled rapidly, is low in fault tolerance, is difficult to take out again after torsion shear, is insufficient in loosening prevention capability, is unfavorable for rapid assembly, and therefore cannot meet the existing requirements, and the torsion shear type bolt with high assembly precision is provided for the purposes.
Disclosure of Invention
First technical problem
The invention aims to provide a torsion shear type bolt with high assembly precision, so as to solve the problems that the torsion shear type bolt which is proposed in the background art and used at present is mainly of an integrated structure, the bolt can not be assembled rapidly, the fault tolerance of the integrated torsion shear type bolt is low, the bolt is difficult to take out again after torsion shear, and the loosening prevention capability is insufficient, so that the quick assembly is not facilitated.
(II) technical scheme
In order to achieve the above purpose, the present invention provides the following technical solutions: the torsional shear type bolt with high assembly precision comprises a screw rod; the screw also comprises a ball seat and unidirectional ring teeth; the bottom of the screw is integrally provided with a ball seat; the top of the ball seat is integrally provided with unidirectional ring teeth in a surrounding manner; the outside of the screw is fixedly provided with a nut through threaded connection; the bottom of the nut is of a backing ring structure, and the outer side of the nut is provided with a fitting; the assembly part also comprises a rotating strip; the main body of the assembly part is divided into a hexagonal ring structure and a shaft bracket structure, and a rotating strip is rotatably arranged on the outer side of the shaft bracket structure through a hinge; the outer side of the bottom of the rotating strip is of a right-angle structure, and the rotating strip can be limited to rotate 0-90 degrees through the right-angle structure.
Preferably, the screw also comprises a flower groove; the middle of the top of the screw is provided with a flower groove, and the inner side of the flower groove is fixedly provided with a shearing part through interference fit.
Preferably, the bottom of the shearing part is matched with the inner side shape of the flower groove; the top integral type of cutting the piece is provided with double-deck cylinder structure, and double-deck cylinder structure's top integral type is provided with the hexagonal structure.
Preferably, the fitting further comprises a threaded pin; screw holes are formed in the outer sides of the rotating strips, and threaded pins are fixedly arranged in the screw holes; the spiral strip is fixedly arranged on one side of the assembly part through a threaded pin; the six-edge ring structure of the assembly part is sleeved outside the nut in a fit way.
Preferably, a shaft barrel structure is integrally arranged at the top of the shaft frame structure of the assembly part, and a sliding rod is rotatably arranged in the shaft barrel through a bearing; the top of the sliding rod is provided with a telescopic cylinder in a sliding way; the top of the telescopic cylinder is fixedly provided with a rotating seat.
Preferably, screw holes are formed at two ends of the rotating seat, and threaded telescopic rods are fixedly arranged at two ends of the rotating seat through threaded connection; the outer ends of the threaded telescopic rods are of ball structures, and fin structures are uniformly arranged on the outer sides of the ball structures; the outer side of the threaded telescopic rod is of a smooth structure.
Preferably, the outer end of the bottom of the telescopic cylinder is fixedly provided with a transmission gear through key connection.
Preferably, an assembly seat is rotatably arranged on the outer side of the telescopic cylinder through a bearing; one side of the assembly seat extends outwards, a cylindrical structure is integrally arranged at the bottom of the extension part, and a locking gear is rotatably arranged at the outer side of the bottom of the cylindrical structure through a bearing; the top of the locking gear is integrally provided with a cylinder structure; the tooth number and the modulus of the locking gear are consistent with those of the transmission gear; a hexagonal groove structure is formed in the bottom of the locking gear, and the locking gear can be sleeved on the top of the shearing part in an anastomotic manner.
(III) beneficial effects
The invention provides a high-assembly-precision torsional shear bolt, which replaces the original bolt integrated structure by arranging the shearing part, reduces the size of the shearing part, can reduce the manufacturing cost and the manufacturing difficulty, is convenient for quick assembly of the bolt, has low difficulty in taking out after fracture, can remedy when the installation is in error, and can recycle the recovered screw.
Secondly, the friction force of the ball seat is improved due to the arrangement of the unidirectional ring teeth, the matching piece can be extruded through the unidirectional structure to generate concave screw loosening, the overall stability of the bolt is improved, and the screw is simple in assembly mode and favorable for rapid assembly.
Drawings
FIG. 1 is a schematic diagram of a three-dimensional side view of an embodiment of the present invention;
FIG. 2 is a schematic view of a three-dimensional bottom view in an embodiment of the present invention;
FIG. 3 is a schematic diagram of an axial side bottom view of an embodiment of the present invention;
FIG. 4 is a schematic view of a partial bottom view of an embodiment of the present invention;
FIG. 5 is a schematic diagram of a partial side view of an embodiment of the present invention;
FIG. 6 is a schematic perspective view of a screw according to an embodiment of the present invention;
FIG. 7 is a schematic perspective view of an assembly according to an embodiment of the present invention;
FIG. 8 is a schematic view of a partial enlarged structure of an embodiment of the present invention;
in fig. 1 to 8, the correspondence between the component names or lines and the drawing numbers is:
1. a screw; 101. a ball seat; 102. unidirectional ring teeth; 103. flower grooves; 2. a nut; 3. cutting off the shearing piece; 4. a fitting; 401. rotating the strip; 402. a threaded pin; 5. a slide bar; 6. a telescopic cylinder; 7. a rotating seat; 8. a threaded telescopic rod; 9. a transmission gear; 10. an assembly seat; 11. locking the gear.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1 to 8, an embodiment of the present invention provides: the torsional shear type bolt with high assembly precision comprises a screw 1; the screw 1 also comprises a ball seat 101 and unidirectional ring teeth 102; the bottom of the screw 1 is integrally provided with a ball seat 101; the top of the ball seat 101 is integrally provided with unidirectional ring teeth 102 in a surrounding manner; wherein the screw 1 further comprises a flower groove 103; a flower groove 103 is formed in the middle of the top of the screw 1, and a shearing part 3 is fixedly arranged on the inner side of the flower groove 103 through interference fit; wherein the bottom of the shearing part 3 is matched with the inner side shape of the flower groove 103; the top of the shear part 3 is integrally provided with a double-layer cylindrical structure, and the top of the double-layer cylindrical structure is integrally provided with a hexagonal structure; the outside of the screw 1 is fixedly provided with a nut 2 through threaded connection; the bottom of the nut 2 is of a backing ring structure, and the outer side of the nut 2 is provided with a fitting 4; fitting 4 also includes a spin strip 401; the main body of the assembly part 4 is divided into a hexagonal ring structure and a shaft bracket structure, and a rotating strip 401 is rotatably arranged on the outer side of the shaft bracket structure through a hinge connection; the outer side of the bottom of the rotating strip 401 is of a right-angle structure, and the rotating strip 401 can be limited to rotate 0-90 degrees through the right-angle structure; wherein the fitting 4 further comprises a threaded pin 402; screw holes are formed in the outer sides of the rotating strips 401, and threaded pins 402 are fixedly arranged in the screw holes; the spiral strip 401 is fixedly arranged on one side of the assembly part 4 through a threaded pin 402; the six-side ring structure of the assembly part 4 is sleeved outside the nut 2 in a fit way; wherein, the top of the shaft bracket structure of the assembly part 4 is integrally provided with a shaft barrel structure, and a sliding rod 5 is rotatably arranged in the shaft barrel through a bearing; the top of the sliding rod 5 is provided with a telescopic cylinder 6 in a sliding manner; the top of the telescopic cylinder 6 is fixedly provided with a rotating seat 7; screw holes are formed in two ends of the rotating seat 7, and threaded telescopic rods 8 are fixedly arranged at two ends of the rotating seat 7 through threaded connection; the outer ends of the threaded telescopic rods 8 are all of ball structures, and fin structures are uniformly arranged on the outer sides of the ball structures; the outer side of the threaded telescopic rod 8 is of a smooth structure.
Wherein, the bottom outer end of the telescopic cylinder 6 is fixedly provided with a transmission gear 9 through key connection.
Wherein, the outer side of the telescopic cylinder 6 is rotatably provided with an assembly seat 10 through a bearing; one side of the assembly seat 10 extends outwards, a cylindrical structure is integrally arranged at the bottom of the extension part, and a locking gear 11 is rotatably arranged at the outer side of the bottom of the cylindrical structure through a bearing; the top of the locking gear 11 is integrally provided with a cylinder structure; the number of teeth and the modulus of the locking gear 11 are consistent with those of the transmission gear 9; the bottom of the locking gear 11 is provided with a hexagonal groove structure, and the locking gear 11 can be sleeved on the top of the shearing part 3 in an anastomotic manner.
Working principle: when the screw rod 1 is used, the screw rod 1 penetrates through the bottom of the assembly part 4, the nut 2 is fixed outside the screw rod 1 from the operation surface, after manual tightening, the shearing part 3 is inserted into the flower groove 103 and knocked, the shearing part 3 is fixed in the flower groove 103 through interference fit, then the assembly part 4 is sleeved outside the nut 2, and the locking gear 11 is sleeved at the outer end of the top hexagonal structure of the shearing part 3.
According to the space of operating position can suitably extend screw thread telescopic link 8, extend screw thread telescopic link 8 to both sides through rotatory screw thread telescopic link 8 and increase the torque that roating seat 7 provided to flexible section of thick bamboo 6, utilize screw thread telescopic link 8 to drive roating seat 7 and flexible section of thick bamboo 6 rotation, flexible section of thick bamboo 6 synchronous drive gear 9 is rotatory, drive gear 9 passes through gear drive and drives locking gear 11 rotation, screw up disconnected piece 3 and screw rod 1 of cutting, cut automatically after cutting piece 3 to extreme position, the partial deformation that the piece 3 was cut off is cut off simultaneously and is inlayed in the flower groove 103.
When the assembly is wrong, after the obstacle in the flower groove 103 is removed through the shearing parts 3 which are broken by tool impact, a new group of shearing parts 3 can be inserted into the flower groove 103, and the mounting assembly 4 inverts the threaded telescopic rod 8 to unscrew the screw rod 1.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (4)

1. High assembly accuracy's torsional shear formula bolt, its characterized in that: comprises a screw (1); the screw (1) also comprises a ball seat (101) and unidirectional ring teeth (102); a ball seat (101) is integrally arranged at the bottom of the screw (1); the top of the ball seat (101) is integrally provided with unidirectional ring teeth (102) in a surrounding manner; the outside of the screw (1) is fixedly provided with a nut (2) through threaded connection; the bottom of the nut (2) is of a backing ring structure, and a fitting (4) is assembled on the outer side of the nut (2); the assembly part (4) also comprises a rotating strip (401); the main body of the assembly part (4) is divided into a hexagonal ring structure and a shaft bracket structure, and a rotating strip (401) is rotatably arranged on the outer side of the shaft bracket structure through a hinge connection; the outer side of the bottom of the rotating strip (401) is of a right-angle structure, and the rotating strip (401) can be limited to rotate 0-90 degrees through the right-angle structure;
the screw (1) also comprises a flower groove (103); a flower groove (103) is formed in the middle of the top of the screw (1), and a shearing part (3) is fixedly arranged on the inner side of the flower groove (103) through interference fit;
the bottom of the shearing part (3) is matched with the inner side of the flower groove (103); the top of the shearing part (3) is integrally provided with a double-layer cylindrical structure, and the top of the double-layer cylindrical structure is integrally provided with a hexagonal structure;
a shaft barrel structure is integrally arranged at the top of the shaft frame structure of the assembly part (4), and a sliding rod (5) is rotatably arranged in the shaft barrel through a bearing; the top of the sliding rod (5) is provided with a telescopic cylinder (6) in a sliding manner; a rotating seat (7) is fixedly arranged at the top of the telescopic cylinder (6);
an assembly seat (10) is rotatably arranged on the outer side of the telescopic cylinder (6) through a bearing; one side of the assembly seat (10) extends outwards, a cylindrical structure is integrally arranged at the bottom of the extension part, and a locking gear (11) is rotatably arranged at the outer side of the bottom of the cylindrical structure through a bearing; a cylinder structure is integrally arranged at the top of the locking gear (11); the number of teeth and the modulus of the locking gear (11) are consistent with those of the transmission gear (9); the bottom of the locking gear (11) is provided with a hexagonal groove structure, and the locking gear (11) can be sleeved on the top of the shearing part (3) in an anastomotic manner.
2. The high assembly precision torsional shear bolt of claim 1, wherein: the fitting (4) further comprises a threaded pin (402); screw holes are formed in the outer sides of the rotating strips (401), and threaded pins (402) are fixedly arranged in the screw holes; the spiral strip (401) is fixedly arranged on one side of the assembly part (4) through a threaded pin (402); the six-edge ring structure of the assembly part (4) is sleeved outside the nut (2) in a fit way.
3. The high assembly precision torsional shear bolt of claim 1, wherein: screw holes are formed in two ends of the rotating seat (7), and threaded telescopic rods (8) are fixedly arranged at two ends of the rotating seat (7) through threaded connection; the outer ends of the threaded telescopic rods (8) are all of ball structures, and fin structures are uniformly arranged on the outer sides of the ball structures; the outer side of the threaded telescopic rod (8) is of a smooth structure.
4. The high assembly precision torsional shear bolt of claim 1, wherein: the outer end of the bottom of the telescopic cylinder (6) is fixedly provided with a transmission gear (9) through key connection.
CN202110965768.2A 2021-08-23 2021-08-23 High-assembly-precision torsional shear type bolt Active CN113775626B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110965768.2A CN113775626B (en) 2021-08-23 2021-08-23 High-assembly-precision torsional shear type bolt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110965768.2A CN113775626B (en) 2021-08-23 2021-08-23 High-assembly-precision torsional shear type bolt

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CN113775626A CN113775626A (en) 2021-12-10
CN113775626B true CN113775626B (en) 2023-05-23

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080226411A1 (en) * 2007-03-16 2008-09-18 Mckinlay Alistair N Dual torque setting tension control fastener
CN101875190B (en) * 2010-06-25 2012-06-13 河南省电力公司洛阳供电公司 Wrench for linearly screwing bolt in small space
CN203926292U (en) * 2014-06-09 2014-11-05 上海申光高强度螺栓有限公司 Torsional shear type bolt
CN105953048B (en) * 2016-06-21 2019-02-12 北京科海恒生科技有限公司 A kind of cored screw bar twice-coiled devices
CN208123212U (en) * 2018-02-24 2018-11-20 乐清市强特紧固件制造有限公司 A kind of non-return type disjunctor light regulating bolt
CN209812218U (en) * 2019-04-29 2019-12-20 中国十五冶金建设集团有限公司 Torsional shear tool of torsional shear type high-strength bolt

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Effective date of registration: 20230506

Address after: 563000 17 Yingtian gonggu, Honghuagang District, Zunyi City, Guizhou Province

Applicant after: GUIZHOU HANGRUI AVIATION PRECISION PARTS MANUFACTURING Co.,Ltd.

Address before: 272100 No. 163, reform road, ChenWan village, Fucun Town, Weishan County, Jining City, Shandong Province

Applicant before: Zhang Dong

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PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: Torsion shear type bolts with high assembly accuracy

Granted publication date: 20230523

Pledgee: China Construction Bank Corporation Zunyi branch

Pledgor: GUIZHOU HANGRUI AVIATION PRECISION PARTS MANUFACTURING Co.,Ltd.

Registration number: Y2024520000009