CN110666731B - Bolt screwing device - Google Patents

Bolt screwing device Download PDF

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Publication number
CN110666731B
CN110666731B CN201910910037.0A CN201910910037A CN110666731B CN 110666731 B CN110666731 B CN 110666731B CN 201910910037 A CN201910910037 A CN 201910910037A CN 110666731 B CN110666731 B CN 110666731B
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CN
China
Prior art keywords
wall
locking
bolt
rotary sleeve
block
Prior art date
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Active
Application number
CN201910910037.0A
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Chinese (zh)
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CN110666731A (en
Inventor
朱汉华
朱进
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Yonghao High Strength Bolt Co ltd
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Jiangsu Yonghao High Strength Bolt Co ltd
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Priority to CN201910910037.0A priority Critical patent/CN110666731B/en
Publication of CN110666731A publication Critical patent/CN110666731A/en
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Publication of CN110666731B publication Critical patent/CN110666731B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00Spanners; Wrenches
    • B25B13/48Spanners; Wrenches for special purposes
    • B25B13/485Spanners; Wrenches for special purposes for theft-proof screws, bolts or nuts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00Spanners; Wrenches
    • B25B13/10Spanners; Wrenches with adjustable jaws
    • B25B13/12Spanners; Wrenches with adjustable jaws the jaws being slidable
    • B25B13/16Spanners; Wrenches with adjustable jaws the jaws being slidable by screw or nut

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Dowels (AREA)

Abstract

The invention discloses a bolt screwing device.A circular hole is arranged in the center direction of a rotary sleeve, a first groove part and two second groove parts are arranged on the inner wall of the circular hole, and the two second groove parts are symmetrically distributed at two sides of the first groove part; the clamp block is arranged in the first groove portion, the clamp block is inserted into the side wall of the rotary sleeve in a splicing mode, a locking screw is connected to the outer wall of the rotary sleeve in a threaded mode, the two clamp blocks are symmetrically and fixedly connected into the two second groove portions, the outer wall surfaces of the clamp blocks are attached to the outer wall surfaces of the second groove portions, the inner wall surfaces of the clamp blocks are of arc surface structures, the distance from the top end of the inner wall arc surface of each clamp block to the circle center of the rotary sleeve is smaller than the distance from the bottom end of the inner wall arc surface of each clamp block to the circle center, the bottom ends of the inner wall arc surfaces of the two clamp blocks are attached to each other, and the bolt head is abutted. The invention has the advantages of simple structure, good locking effect, convenient structure manufacture and good use effect.

Description

Bolt screwing device
The technical field is as follows:
the invention relates to a bolt screwing device.
Background art:
the bolt is a commonly used fastener, and when the bolt is used outdoors, the bolt can be unscrewed by lawless persons for equipment theft or infrastructure damage, and various anti-theft bolt structures appear on the market for preventing the bolt from being unscrewed easily. The existing anti-theft bolt is generally characterized in that a bolt head is arranged to be of a special-shaped structure, and then a special spanner is used for operating the bolt. A special-shaped bolt structure on the market at present is shown in fig. 5, and the structure is to provide a cylindrical bolt head, and then to provide a screwing surface 100 on the bolt head, and the existing screwing device for the bolt of this kind generally provides a sleeve, and then a plurality of cushion blocks are inserted in the sleeve, and when in use, the cushion blocks will slip with the cylindrical surface of the bolt head, and the use effect is not good, so the invention provides a bolt screwing device, which is specially used for the bolt head of the above structure.
The invention content is as follows:
the present invention provides a bolt screwing device to solve the above problems of the prior art.
The technical scheme adopted by the invention is as follows: a bolt screwing device is characterized in that a bolt head of a bolt is of a cylindrical structure, a planar screwing surface is arranged in the axial direction of the circumferential wall of the bolt head, the screwing device is tightly clamped on the bolt head of the bolt and realizes the rotation of the bolt, the screwing device comprises a rotating sleeve, a pressing block, a locking screw and a locking block,
a circular hole is formed in the center direction of the rotary sleeve, a bolt head of the bolt is arranged in the circular hole, a first groove part and two second groove parts are arranged on the inner wall of the circular hole, and the two second groove parts are symmetrically distributed on two sides of the first groove part;
the pressing block is arranged in the first groove part and is inserted into the side wall of the rotary sleeve, a locking screw is in threaded connection with the outer wall of the rotary sleeve, one end of the locking screw abuts against the pressing block, and the pressing block abuts against the screwing surface of the bolt head;
the two locking blocks are symmetrically and fixedly connected in the two second groove parts, the outer wall surfaces of the locking blocks are attached to the outer wall surfaces of the second groove parts,
the inner wall surface of the locking block is of an arc surface structure, the distance from the top end of the arc surface of the inner wall of the locking block to the circle center of the rotary sleeve is smaller than the distance from the bottom end of the arc surface of the inner wall of the locking block to the circle center,
the bottom of inner wall arc surface is laminated mutually in two latch segments, and binding face and the coaxial setting of locking screw, and the compact heap is contradicted the bolt head on the inner wall arc surface of two latch segments.
Furthermore, conical teeth are arranged on the inner wall of the pressing block and the inner wall arc surface of the locking block.
Further, the locking block is welded in the second groove portion.
Furthermore, a guide rod is arranged on the pressing block and is inserted into the rotating sleeve.
Further, the rotating sleeve is of a cylindrical structure, two handles are welded on the outer wall of the rotating sleeve, a mounting platform portion is arranged on the outer circumferential wall of the rotating sleeve, and the locking screw is in threaded connection with the mounting platform portion.
Further, the rotating sleeve is of a regular hexagon structure, and the locking screw is in threaded connection with the end face of one side of the rotating sleeve.
The invention has the following beneficial effects:
the invention has the advantages of simple structure, good locking effect, convenient structure manufacture and good use effect.
Description of the drawings:
FIG. 1 is a block diagram of the present invention.
Fig. 2 is a partially enlarged view of the compact of the present invention.
Fig. 3 is a partial enlarged view of the locking segment of the present invention.
Fig. 4 is another structural view of the present invention.
Fig. 5 is a view showing a structure of a bolt to which the present invention is applied.
The specific implementation mode is as follows:
the invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 4, a bolt screwing device according to the present invention includes: the bolt head of the bolt is of a cylindrical structure, a planar screwing surface 100 is arranged in the axial direction of the circumferential wall of the bolt head, and the screwing device is tightly clamped on the bolt head of the bolt and realizes the rotation of the bolt.
The screwing device according to the invention is described in detail below:
the screwing device comprises a rotating sleeve 11, a pressing block 12, a locking screw 13 and a locking block 14, a round hole 110 is formed in the center direction of the rotating sleeve 11, a bolt head of a bolt is arranged in the round hole 110, a first groove portion 111 and two second groove portions 112 are formed in the inner wall of the round hole 110, and the two second groove portions 112 are symmetrically distributed on two sides of the first groove portion 111.
The pressing block 12 is arranged in the first groove portion 111, the pressing block 12 is inserted into the side wall of the rotary sleeve 11, a locking screw 13 is connected to the outer wall of the rotary sleeve 11 in a threaded mode, the locking screw 13 penetrates through the side wall of the rotary sleeve 11 and abuts against the pressing block 12, and the pressing block 12 abuts against the screwing surface 100 of the bolt head through the locking screw 13.
The two locking blocks 14 are symmetrically and fixedly connected in the two second groove portions 112, and the outer wall surfaces of the locking blocks 14 are attached to the outer wall surfaces of the second groove portions 112.
The inner wall surface of the locking block 14 is of an arc surface structure, and the distance r1 from the top end of the arc surface of the inner wall of the locking block 14 to the center of the rotating sleeve 11 is smaller than the distance r2 from the bottom end of the arc surface of the inner wall of the locking block 14 to the center of the circle. After the locking blocks 14 are fixed on the pressing blocks 12, the bottom ends of the inner wall arc surfaces of the two locking blocks 14 are attached to each other, the attaching surfaces and the locking screws 13 are coaxially arranged, and the bolt heads are abutted to the inner wall arc surfaces of the two locking blocks 14 by the pressing blocks 12.
The bolt head of the bolt is placed in the circular hole 110, the locking screw 13 is rotated, the pressing block 12 is abutted to the screwing surface 100 of the bolt head in the bolt, the locking screw 13 is selected continuously, and the bolt head is abutted to the inner wall arc surface of the two locking blocks 14 through the pressing block 12. When the bolt is screwed or loosened, due to the eccentric structure of the arc surface of the inner wall of the locking block 14, the distance between the arc surface of the bolt head and the arc surface of the inner wall of the locking block 14 is smaller and smaller regardless of the forward screwing device or the reverse screwing device, so that the fastening force is larger and larger, the phenomenon that the bolt head slips is avoided, and the fastening force is ensured.
In order to further ensure the locking force, conical teeth are arranged on the inner wall of the pressing block 12 and the inner wall arc surface of the locking block 14, as shown in fig. 2 and 3.
The locking block 14 of the present invention is welded directly within the second groove portion 112. In order to facilitate the insertion of the pressing block 12 on the side wall of the rotating sleeve 11, a guide rod 121 is arranged on the pressing block 12, and the guide rod 121 is inserted on the rotating sleeve 11.
The invention relates to two structural forms of a rotating sleeve 11, one of which is as follows: the rotary sleeve 11 is cylindrical, and two handles 21 are welded to the outer wall of the rotary sleeve 11 to facilitate rotation of the rotary sleeve 11. A mounting platform part is arranged on the outer circumferential wall of the rotary sleeve 11, and the locking screw 13 is in threaded connection with the mounting platform part. The structure is suitable for occasions with larger installation space, and when the operable space of the bolt head is larger, the rotating sleeve with a cylindrical structure can be used.
The other structure is as follows: the rotating sleeve 11 is of a regular hexagon structure, and the locking screw 13 is in threaded connection with one side end face of the rotating sleeve 11. The structure is suitable for the use occasions with small operable space of the bolt head, and when the bolt is screwed or unscrewed, the rotating sleeve 11 is matched with the bolt head and then is rotated by a spanner.
The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.

Claims (1)

1. A bolt screwing device, the bolt head of the bolt is a cylindrical structure, a planar screwing surface (100) is arranged in the axial direction of the circumferential wall of the bolt head, and the device is characterized in that: the screwing device is tightly clamped on the bolt head of the bolt and realizes the rotation of the bolt, the screwing device comprises a rotating sleeve (11), a pressing block (12), a locking screw (13) and a locking block (14),
a round hole (110) is formed in the center direction of the rotary sleeve (11), the bolt head of the bolt is arranged in the round hole (110), a first groove part (111) and two second groove parts (112) are formed in the inner wall of the round hole (110), and the two second groove parts (112) are symmetrically distributed on two sides of the first groove part (111);
the pressing block (12) is arranged in the first groove part (111), the pressing block (12) is inserted into the side wall of the rotary sleeve (11), a locking screw (13) is connected to the outer wall of the rotary sleeve (11) in a threaded mode, one end of the locking screw (13) abuts against the pressing block (12), and the pressing block (12) abuts against the screwing surface (100) of the bolt head;
the two locking blocks (14) are symmetrically and fixedly connected in the two second groove parts (112), the outer wall surfaces of the locking blocks (14) are attached to the outer wall surfaces of the second groove parts (112),
the inner wall surface of the locking block (14) is of an arc surface structure, the distance from the top end of the arc surface of the inner wall of the locking block (14) to the circle center of the rotating sleeve (11) is less than the distance from the bottom end of the arc surface of the inner wall of the locking block (14) to the circle center,
the bottom ends of the arc surfaces of the inner walls of the two locking blocks (14) are attached to each other, the attaching surfaces and the locking screws (13) are coaxially arranged, and the bolt heads are abutted to the arc surfaces of the inner walls of the two locking blocks (14) by the pressing blocks (12);
conical teeth are arranged on the inner wall of the pressing block (12) and the inner wall arc surface of the locking block (14);
the locking block (14) is welded in the second groove part (112);
the pressing block (12) is provided with a guide rod (121), and the guide rod (121) is inserted into the rotary sleeve (11);
the rotary sleeve (11) is of a cylindrical structure, two handles (21) are welded on the outer wall of the rotary sleeve (11), a mounting platform part is arranged on the outer circumferential wall of the rotary sleeve (11), and the locking screw (13) is in threaded connection with the mounting platform part;
the rotating sleeve (11) is of a regular hexagon structure, and the locking screw (13) is in threaded connection with the end face of one side of the rotating sleeve (11).
CN201910910037.0A 2019-09-25 2019-09-25 Bolt screwing device Active CN110666731B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910910037.0A CN110666731B (en) 2019-09-25 2019-09-25 Bolt screwing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910910037.0A CN110666731B (en) 2019-09-25 2019-09-25 Bolt screwing device

Publications (2)

Publication Number Publication Date
CN110666731A CN110666731A (en) 2020-01-10
CN110666731B true CN110666731B (en) 2021-06-25

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ID=69079191

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910910037.0A Active CN110666731B (en) 2019-09-25 2019-09-25 Bolt screwing device

Country Status (1)

Country Link
CN (1) CN110666731B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2058132U (en) * 1989-08-24 1990-06-13 陈石 Universal three-jaw pipe tongs
CN2933732Y (en) * 2006-05-17 2007-08-15 重庆长安汽车股份有限公司 Detaching tool for vehicle rear axle special type bolt
WO2011146081A1 (en) * 2010-05-17 2011-11-24 Ee Jig Kim Adjustable wrench
CN105150145A (en) * 2015-09-22 2015-12-16 王九杨 Movable wrench
CN206869753U (en) * 2017-04-24 2018-01-12 海洋石油工程股份有限公司 The spanner for preventing nut from rotating
CN207953627U (en) * 2017-10-19 2018-10-12 四川佳泰防腐绝缘材料有限公司 A kind of pipeline corrosion protection rotating and clamping device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2058132U (en) * 1989-08-24 1990-06-13 陈石 Universal three-jaw pipe tongs
CN2933732Y (en) * 2006-05-17 2007-08-15 重庆长安汽车股份有限公司 Detaching tool for vehicle rear axle special type bolt
WO2011146081A1 (en) * 2010-05-17 2011-11-24 Ee Jig Kim Adjustable wrench
CN105150145A (en) * 2015-09-22 2015-12-16 王九杨 Movable wrench
CN206869753U (en) * 2017-04-24 2018-01-12 海洋石油工程股份有限公司 The spanner for preventing nut from rotating
CN207953627U (en) * 2017-10-19 2018-10-12 四川佳泰防腐绝缘材料有限公司 A kind of pipeline corrosion protection rotating and clamping device

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