CN110848223A - Locking device - Google Patents
Locking device Download PDFInfo
- Publication number
- CN110848223A CN110848223A CN201911157863.9A CN201911157863A CN110848223A CN 110848223 A CN110848223 A CN 110848223A CN 201911157863 A CN201911157863 A CN 201911157863A CN 110848223 A CN110848223 A CN 110848223A
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- Prior art keywords
- cavity
- shaft
- locking
- locking device
- driving rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 210000004907 gland Anatomy 0.000 claims description 9
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 241000282472 Canis lupus familiaris Species 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Classifications
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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
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
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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
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
- F16B13/10—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate gripping parts moved into their final position in relation to the body of the device by a separate operation
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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
- F16B35/041—Specially-shaped shafts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
The invention provides a locking device which comprises a locking shaft, a stop block and a nut, wherein the stop block and the nut are distributed at two axial ends of the locking shaft; a cavity is further formed in the locking shaft, a moving hole communicated with the cavity is formed in the side wall of the locking shaft, and the stop block penetrates through the moving hole and extends out of the locking shaft; and a moving mechanism is arranged in the cavity and can drive the stop block to move towards the cavity along the moving hole. When the locking device is installed, the connecting surface cannot be damaged, the locking device can be repeatedly used, and the service life of the locking device is prolonged.
Description
Technical Field
The invention relates to a locking device.
Background
Connecting two objects by using a required connecting piece, wherein the commonly used connecting piece comprises a bolt and a nut, and the two materials are fixed by screwing the nut on the bolt; in the actual situation, often there is such a problem, need fasten a part on another fixed base, and this base is not convenient for dismantle moreover, though reserve the connecting hole on this base, inside does not reserve the built-in fitting, and the connecting hole is not the screw hole yet, and the nut can't get into the internally mounted, and at this moment, can carry out fastening installation through self-tapping screw, but self-tapping screw probably will destroy the connection face of base, consequently, need one kind and can get into the connecting hole and carry out fastening installation's locking device under the condition of not destroying the connection face.
Disclosure of Invention
In order to solve the technical problem, the invention provides the locking device which can be repeatedly used without damaging a connecting surface and prolongs the service life of the locking device.
The invention adopts the following technical scheme:
a locking device comprises a locking shaft, a stop block and a nut, wherein the stop block and the nut are distributed at two axial ends of the locking shaft, the stop block is connected to the locking shaft and protrudes out of the circumferential surface of the locking shaft, the nut is in threaded connection with the locking shaft, and the nut can axially move to reduce the distance between the nut and the stop block;
a cavity is further formed in the locking shaft, a moving hole communicated with the cavity is formed in the side wall of the locking shaft, and the stop block penetrates through the moving hole and extends out of the locking shaft; and a moving mechanism is arranged in the cavity and can drive the stop block to move towards the cavity along the moving hole.
Preferably, the cavity extends along the axial direction of the locking shaft, a driving rod and a connecting rod are arranged in the cavity, one end of the connecting rod is hinged to the stop block, the other end of the connecting rod is hinged to the driving rod, and the driving rod can move in the cavity along the axial direction.
Preferably, the moving holes are symmetrically arranged on two sides of the locking shaft along the radial direction, and stop blocks are arranged in the moving holes and are hinged with the driving rod through connecting rods respectively.
Preferably, the hinge axes at the two ends of the connecting rod are parallel to each other and perpendicular to the axis of the locking shaft.
Preferably, the two side stoppers are connected through a spring.
Preferably, one end of the cavity, which is far away from the stop block, penetrates through the end face of the locking shaft, a stud is connected to the cavity in an internal thread manner, a rotating handle is arranged on the stud, and the driving rod rotates on the stud.
Preferably, the driving rod is connected with a columnar rotating seat, and the diameter of the rotating seat is greater than the section length of the driving rod; and the end face of the stud is provided with a concave cavity capable of accommodating the rotating seat, and the rotating seat is rotatably connected in the concave cavity through a bearing.
Preferably, the end face of the stud is further provided with an annular groove with a diameter larger than that of the cavity, the annular groove is connected with a gland in a sleeved mode outside the driving rod in an inner threaded mode, a through hole for the driving rod to rotate is formed in the gland, the diameter of the through hole is smaller than that of the rotary seat, and the rotary seat is limited between the cavity and the through hole.
Preferably, the locking shaft comprises a first shaft body and a second shaft body which are coaxial, the moving hole is formed in the side wall of the first shaft body, the cavity penetrates through the end face of the second shaft body, an external thread is arranged on the second shaft body, the nut is connected to the outside of the second shaft body in a threaded mode, and the diameter of the rotating handle is smaller than that of the second shaft body.
Preferably, the diameter of the second shaft body is smaller than that of the first shaft body, an auxiliary block is further arranged between the nut and the stop block, a stepped hole is formed in the auxiliary block, the auxiliary block is sleeved outside the first shaft body and the second shaft body through the stepped hole, and the nut can push the auxiliary block to move towards the stop block.
The invention has the beneficial effects that: the stop block can extend out of the locking shaft or be hidden in the cavity, when the stop block is hidden in the cavity, the locking shaft can be inserted into the mounting hole, the stop block is driven by the moving mechanism to extend out of the locking shaft, the mounting component and the base are positioned between the nut and the stop block, and the nut is locked, so that the mounting component and the base can be clamped and fixed without damaging the mounting surface of the base; when the locking device is detached, reverse operation is performed, the stop block is hidden in the cavity, the locking shaft is pulled out, the locking device can be repeatedly used, and the service life of the locking device is prolonged.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the nut, the auxiliary block and the locking shaft of the present invention shown separated;
fig. 3 is a schematic view of the internal structure of the locking shaft of the present invention.
Labeled as: 1. a locking shaft; 2. a stopper; 3. a nut; 4. a cavity; 5. moving the hole; 6. a drive rod; 7. a connecting rod; 8. a spring; 9. a stud; 10. rotating the handle; 11. A rotating base; 12. a bearing; 13. an annular groove; 14. a gland; 15. a first shaft body; 16. a second shaft body; 17. and an auxiliary block.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 to 3, the locking device of the present embodiment includes a locking shaft 1, a stopper 2 and a nut 3, the stopper 2 and the nut 3 are distributed at two axial ends of the locking shaft 1, the stopper 2 is connected to the locking shaft 1, the stopper 2 protrudes from a circumferential surface of the locking shaft 1, the nut 3 is in threaded connection with the locking shaft 1, and the nut 3 can move axially to reduce a distance between the nut 3 and the stopper 2; the component to be installed and the base are clamped between the nut 3 and the stop block 2, and the principle of the embodiment is mainly that the nut 3 and the stop block 2 are used for clamping and fixing;
the locking shaft 1 is internally provided with a cavity 4, the side wall of the locking shaft 1 is provided with a moving hole 5 communicated with the cavity 4, and the stop block 2 penetrates through the moving hole 5 and extends out of the locking shaft 1; a moving mechanism is arranged in the cavity 4, the moving mechanism can drive the stop block 2 to move into the cavity 4 along the moving hole 5, preferably, the stop block 2 can completely enter the cavity 4, at the moment, the stop block 2 does not extend out of the locking shaft 1, during installation, the mounting hole of the part to be fastened is aligned with the mounting hole of the base, the locking shaft 1 at the moment is inserted into the two mounting holes, the stop block 2 is driven by the moving mechanism to move out of the cavity 4 along the moving hole 5 until the driving stop block 2 passes through the moving hole 5 and extends out of the locking shaft 1, at the moment, the mounting part and the base are positioned between the nut 3 and the stop block 2, and then the nut 3 is locked, so that the stop block 2 and the locking shaft; during the dismantlement, reverse operation can, makes dog 2 remove to cavity 4 along removing hole 5, until in dog 2 gets into cavity 4 completely, extract locking axle 1 can, can used repeatedly, extension locking device's life.
Specifically, the cavity 4 extends along the axial direction of the locking shaft 1, a driving rod 6 and a connecting rod 7 are arranged in the cavity 4, the moving holes 5 are symmetrically arranged at two sides of the locking shaft 1 along the radial direction, the moving holes 5 are matched with the size and the shape of the stop blocks 2, the stop blocks 2 are arranged in the moving holes 5, the stop blocks 2 at two sides are connected through springs 8, the pre-tightening force of the springs 8 can push the stop blocks 2 at two sides to extend out of the locking shaft 1 to ensure the fixed strength after locking, the stop blocks 2 are respectively hinged with the driving rod 6 through the connecting rod 7, one end of the connecting rod 7 is hinged with the stop blocks 2 through rotating shafts, the other end of the connecting rod 7 is hinged with the driving rod 6 through rotating shafts, the two rotating shafts are parallel to each other and are perpendicular to the axial line of the locking shaft 1, the driving rod 6 can move, the synchronous reverse movement of the stop blocks 2 at the two sides is realized, so that the stop blocks 2 move towards the cavity 4 or extend out of the locking shaft 1.
One end of the cavity 4, which is far away from the stop dog 2, penetrates through the end face of the locking shaft 1, a stud 9 is connected with the cavity 4 in a threaded manner, a rotating handle 10 is arranged on the stud 9, the driving rod 6 can relatively rotate on the stud 9, the rotating handle 10 is rotated, the stud 9 rotates in the cavity 4, the end part of the stud 9 rotates on the driving rod 6, the stud 9 can axially displace under the action of threads, and therefore the driving rod 6 is driven to axially slide in the cavity 4, and synchronous movement of the positioning stop dogs 2 on two sides is achieved;
specifically, the driving rod 6 is connected with a columnar rotating seat 11, and the diameter of the rotating seat 11 is larger than the section length of the driving rod 6; a concave cavity capable of accommodating the rotary seat 11 is formed in the end face of the stud 9, the rotary seat 11 is rotatably connected into the concave cavity through a bearing 12, and when the stud 9 rotates, the stud can rotate around the rotary seat 11 under the action of the bearing 12; still be equipped with the ring channel 13 that the diameter is greater than the cavity on the terminal surface of double-screw bolt 9, ring channel 13 female connection has cup joints gland 14 outside actuating lever 6, set up the through-hole that supplies actuating lever 6 to rotate on gland 14, when double-screw bolt 9 is rotatory, it is rotatory around actuating lever 6 to drive gland 14 through the through-hole, the diameter of through-hole is less than the diameter of roating seat 11, roating seat 11 is spacing between cavity and through-hole, when double-screw bolt 9 produced axial displacement under the effect of screw thread, can drive actuating lever 6 through gland 14 and produce axial displacement, avoid roating seat 11 to deviate from in the cavity.
Wherein, the locking shaft 1 comprises a first shaft body 15 and a second shaft body 16 which are coaxial, a moving hole 5 is arranged on the side wall of the first shaft body 15, a cavity 4 penetrates through the end face of the second shaft body 16, an external thread is arranged on the second shaft body 16, a nut 3 is in threaded connection outside the second shaft body 16, the diameter of a rotating handle 10 is smaller than that of the second shaft body 16, the rotating handle 10 is not blocked when the nut 3 is disassembled, the diameter of the second shaft body 16 is smaller than that of the first shaft body 15, an auxiliary block 17 is also arranged between the nut 3 and a stop block 2, a stepped hole is arranged in the auxiliary block 17, the auxiliary block 17 is sleeved outside the first shaft body 15 and the second shaft body 16 through the stepped hole, the nut 3 can push the auxiliary block 17 to move towards the stop block 2, the rotating movement of the nut 3 is converted into the linear movement of the auxiliary block 17, and the mounting component and the, the nut 3 does not directly contact the mounting member and does not damage the mounting surface of the mounting member.
The working principle of the invention is as follows:
firstly, aligning the mounting holes of the parts to be fastened with the mounting holes of the base, rotating the rotary handle 10, driving the studs 9 to move outwards of the cavity 4 under the action of threads, driving the driving rod 6 to pull the connecting rods 7 at two sides to move outwards of the cavity 4, thereby pulling the stop blocks 2 at two sides to move inwards of the cavity 4 along the moving holes 5 until the stop blocks 2 completely enter the cavity 4, inserting the locking shaft 1 into the two mounting holes at the moment, reversely rotating the rotary handle 10, pushing the stop blocks 2 at two sides to penetrate through the moving holes 5 and extend out of the locking shaft 1 through the driving rod 6, then sequentially sleeving the auxiliary block 17 and the nut 3, positioning the mounting parts and the base between the auxiliary block 17 and the stop blocks 2 at the moment, clamping and fixing the two by the locking nut 3 without damaging the mounting surface of the base, and preventing the stop blocks 2 from accidentally moving inwards of the cavity 4 under the self-locking action of the, the fastening effect is good; when the locking device is detached, the rotating handle 10 is only required to be rotated, the stop blocks 2 on the two sides are enabled to completely enter the cavity 4, the locking shaft 1 is pulled out, the locking device can be used repeatedly, and the service life of the locking device is prolonged.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A locking device is characterized by comprising a locking shaft, a stop block and a nut, wherein the stop block and the nut are distributed at two axial ends of the locking shaft;
a cavity is further formed in the locking shaft, a moving hole communicated with the cavity is formed in the side wall of the locking shaft, and the stop block penetrates through the moving hole and extends out of the locking shaft; and a moving mechanism is arranged in the cavity and can drive the stop block to move towards the cavity along the moving hole.
2. The locking device of claim 1, wherein the cavity extends in an axial direction of the locking shaft, and a driving rod and a connecting rod are disposed in the cavity, one end of the connecting rod is hinged to the stopper, and the other end of the connecting rod is hinged to the driving rod, and the driving rod is capable of moving in the axial direction in the cavity.
3. The locking device according to claim 2, wherein the moving holes are symmetrically arranged at two sides of the locking shaft along the radial direction, and the moving holes are internally provided with stop blocks which are respectively hinged with the driving rod through connecting rods.
4. A locking device according to claim 3, wherein the hinge axes at the ends of the connecting rod are parallel to each other and perpendicular to the axis of the locking shaft.
5. A locking device according to claim 3, wherein the side stops are connected by a spring.
6. A locking device according to any one of claims 2 to 5, wherein the end of the cavity remote from the stop extends through the end face of the locking shaft, a stud is screwed into the cavity, a rotating handle is provided on the stud, and the driving rod rotates on the stud.
7. The locking device according to claim 6, wherein the driving rod is connected with a columnar rotating seat, and the diameter of the rotating seat is larger than the section length of the driving rod; and the end face of the stud is provided with a concave cavity capable of accommodating the rotating seat, and the rotating seat is rotatably connected in the concave cavity through a bearing.
8. The locking device according to claim 7, wherein an annular groove having a diameter larger than that of the cavity is further formed in the end face of the stud, a gland is connected to the annular groove in a sleeved manner outside the driving rod, a through hole for the driving rod to rotate is formed in the gland, the diameter of the through hole is smaller than that of the rotary seat, and the rotary seat is limited between the cavity and the through hole.
9. The locking device according to claim 7 or 8, wherein the locking shaft comprises a first shaft body and a second shaft body which are coaxial, the moving hole is formed in a side wall of the first shaft body, the cavity penetrates through an end face of the second shaft body, the second shaft body is provided with external threads, the nut is connected to the outside of the second shaft body in a threaded mode, and the diameter of the rotating handle is smaller than that of the second shaft body.
10. The locking device according to claim 9, wherein the diameter of the second shaft is smaller than that of the first shaft, an auxiliary block is further disposed between the nut and the stopper, a stepped hole is disposed in the auxiliary block, the auxiliary block is sleeved outside the first shaft and the second shaft through the stepped hole, and the nut can push the auxiliary block to move toward the stopper.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911157863.9A CN110848223A (en) | 2019-11-22 | 2019-11-22 | Locking device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911157863.9A CN110848223A (en) | 2019-11-22 | 2019-11-22 | Locking device |
Publications (1)
Publication Number | Publication Date |
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CN110848223A true CN110848223A (en) | 2020-02-28 |
Family
ID=69603808
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201911157863.9A Pending CN110848223A (en) | 2019-11-22 | 2019-11-22 | Locking device |
Country Status (1)
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CN (1) | CN110848223A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111622129A (en) * | 2020-06-08 | 2020-09-04 | 浙江万里建设工程有限公司 | Locking anchor bolt and cliff abutment construction method applying same |
CN111963533A (en) * | 2020-07-31 | 2020-11-20 | 江苏永昊高强度螺栓有限公司 | Expansion bolt convenient to take out |
CN112503164A (en) * | 2020-12-10 | 2021-03-16 | 福建中维动力科技股份有限公司 | Derailleur fixed knot constructs convenient to dismantle |
CN112621999A (en) * | 2020-12-30 | 2021-04-09 | 重庆新久融科技有限公司 | Connecting piece for aluminum template |
CN112648270A (en) * | 2020-12-15 | 2021-04-13 | 梁绍丽 | Plate connecting device |
CN112797115A (en) * | 2020-12-29 | 2021-05-14 | 中国航空工业集团公司西安飞机设计研究所 | Mooring fixing device |
CN113137420A (en) * | 2021-04-13 | 2021-07-20 | 黎春伟 | Self-locking fastening bolt |
CN114193375A (en) * | 2021-12-29 | 2022-03-18 | 重庆交通大学绿色航空技术研究院 | Reusable connecting and locking mechanism |
CN114263671A (en) * | 2021-12-29 | 2022-04-01 | 重庆交通大学绿色航空技术研究院 | Connection locking mechanism convenient to dismantle |
CN114810753A (en) * | 2022-03-30 | 2022-07-29 | 宁波天安(集团)股份有限公司 | Bolt-up seal structure convenient to installation and prefabricated cabin that has this structure |
CN116604071A (en) * | 2023-06-26 | 2023-08-18 | 任丘市恒阳电讯器材有限公司 | Hole position deviation prevention electric iron accessory punching device |
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CN105605058A (en) * | 2016-03-25 | 2016-05-25 | 张子豹 | V-shaped universal expansion bolt |
CN106884836A (en) * | 2017-04-17 | 2017-06-23 | 四川建筑职业技术学院 | It is a kind of to expand formula expansion bolt certainly |
CN107630878A (en) * | 2017-10-13 | 2018-01-26 | 王晓雷 | One kind nail connection bolt |
CN107642535A (en) * | 2017-11-07 | 2018-01-30 | 陈小龙 | The mechanical or for building connecting bolt of fast and easy connection |
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CN102438536A (en) * | 2009-03-13 | 2012-05-02 | 斯百诺辛普利斯提有限责任公司 | Interspinous process implant and fusion cage spacer |
CN104956097A (en) * | 2013-01-29 | 2015-09-30 | 雅克·漱安古 | Remotely operable fastening device |
CN103104270A (en) * | 2013-02-19 | 2013-05-15 | 裴志胜 | Shear type expansion anchor rod and extension application thereof |
CN105605058A (en) * | 2016-03-25 | 2016-05-25 | 张子豹 | V-shaped universal expansion bolt |
CN106884836A (en) * | 2017-04-17 | 2017-06-23 | 四川建筑职业技术学院 | It is a kind of to expand formula expansion bolt certainly |
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Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111622129B (en) * | 2020-06-08 | 2021-08-24 | 浙江万里建设工程有限公司 | Locking anchor bolt and cliff abutment construction method applying same |
CN111622129A (en) * | 2020-06-08 | 2020-09-04 | 浙江万里建设工程有限公司 | Locking anchor bolt and cliff abutment construction method applying same |
CN111963533A (en) * | 2020-07-31 | 2020-11-20 | 江苏永昊高强度螺栓有限公司 | Expansion bolt convenient to take out |
CN111963533B (en) * | 2020-07-31 | 2022-04-26 | 江苏永昊高强度螺栓有限公司 | Expansion bolt convenient to take out |
CN112503164A (en) * | 2020-12-10 | 2021-03-16 | 福建中维动力科技股份有限公司 | Derailleur fixed knot constructs convenient to dismantle |
CN112503164B (en) * | 2020-12-10 | 2022-07-19 | 福建中维动力科技股份有限公司 | Derailleur fixed knot constructs convenient to dismantle |
CN112648270A (en) * | 2020-12-15 | 2021-04-13 | 梁绍丽 | Plate connecting device |
CN112797115A (en) * | 2020-12-29 | 2021-05-14 | 中国航空工业集团公司西安飞机设计研究所 | Mooring fixing device |
CN112621999A (en) * | 2020-12-30 | 2021-04-09 | 重庆新久融科技有限公司 | Connecting piece for aluminum template |
CN112621999B (en) * | 2020-12-30 | 2023-10-27 | 重庆新久融科技有限公司 | Connecting piece for aluminum templates |
CN113137420B (en) * | 2021-04-13 | 2022-08-02 | 沧州华煜铁路器材有限公司 | Self-locking fastening bolt |
CN113137420A (en) * | 2021-04-13 | 2021-07-20 | 黎春伟 | Self-locking fastening bolt |
CN114193375A (en) * | 2021-12-29 | 2022-03-18 | 重庆交通大学绿色航空技术研究院 | Reusable connecting and locking mechanism |
CN114263671A (en) * | 2021-12-29 | 2022-04-01 | 重庆交通大学绿色航空技术研究院 | Connection locking mechanism convenient to dismantle |
CN114193375B (en) * | 2021-12-29 | 2023-12-29 | 重庆交通大学绿色航空技术研究院 | Reusable connecting and locking mechanism |
CN114263671B (en) * | 2021-12-29 | 2024-01-19 | 重庆交通大学绿色航空技术研究院 | Connection locking mechanism convenient to dismantle |
CN114810753A (en) * | 2022-03-30 | 2022-07-29 | 宁波天安(集团)股份有限公司 | Bolt-up seal structure convenient to installation and prefabricated cabin that has this structure |
CN114810753B (en) * | 2022-03-30 | 2023-10-10 | 宁波天安(集团)股份有限公司 | Bolt fastening seal structure convenient to installation and prefabricated cabin with structure |
CN116604071A (en) * | 2023-06-26 | 2023-08-18 | 任丘市恒阳电讯器材有限公司 | Hole position deviation prevention electric iron accessory punching device |
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