CN219911446U - Hexagonal torsional shear type bolt and bolt pair - Google Patents
Hexagonal torsional shear type bolt and bolt pair Download PDFInfo
- Publication number
- CN219911446U CN219911446U CN202320582790.3U CN202320582790U CN219911446U CN 219911446 U CN219911446 U CN 219911446U CN 202320582790 U CN202320582790 U CN 202320582790U CN 219911446 U CN219911446 U CN 219911446U
- Authority
- CN
- China
- Prior art keywords
- bolt
- hexagonal
- torsional shear
- head
- annular groove
- 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.)
- Active
Links
- 239000002699 waste material Substances 0.000 abstract description 12
- 239000000843 powder Substances 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 239000010814 metallic waste Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Bolts, Nuts, And Washers (AREA)
Abstract
The utility model belongs to the technical field of fasteners, and particularly relates to a hexagonal torsional shear type bolt and a bolt pair. It solves the defects of unreasonable design in the prior art. The hexagonal torsional shear type bolt comprises a bolt body, wherein a plum blossom type torsional shear head is arranged at the front end of the bolt body, an annular groove is formed in the joint of the bolt body and the plum blossom type torsional shear head, an elastic sleeve is sleeved at one end, close to the annular groove, of the plum blossom type torsional shear head, and the notch of the annular groove is sealed by the elastic sleeve and abuts against one end, provided with the annular groove, of the bolt body. The utility model has the advantages that: the elastic sleeve can collect waste crushed aggregates and/or waste powder of products during breakage, and can prevent waste at the breakage position from falling on other accessories at the installation position during maintenance and replacement, so that the phenomena of secondary cleaning and the like are avoided.
Description
Technical Field
The utility model belongs to the technical field of fasteners, and particularly relates to a hexagonal torsional shear type bolt and a bolt pair.
Background
A torsional shear bolt is a bolt that proves that the bolt is in place in the manner that the torsional shear breaks and falls. For example, CN202221811418.7, a high-strength wear-resistant steel structure torsional shear type bolt, relates to the technical field of torsional shear type bolts, and includes a screw, a tip is installed at the rear end of the screw, a driving end is installed at the front end of the screw, and a protective sleeve is sleeved on the outer surface of the tip. According to the screw bolt, the screw rod, the end socket, the protective sleeve, the slot, the clamping groove, the inserting block, the buckle, the torsion groove and the reinforcing rib are arranged, the damage caused by abrasion can be reduced through the hemispherical cambered surface structure by setting the shapes of the end socket and the protective sleeve, the end socket is further protected through the protective sleeve, the front condition is provided for the assembly, disassembly and replacement of the protective sleeve while the assembly stability of the protective sleeve is ensured through the structural combination of the slot, the clamping groove, the inserting block and the buckle, and the screw rod structure is reinforced through the spiral structure and the distribution setting of the torsion groove and the reinforcing rib, so that the screw rod is prevented from being broken and damaged due to external acting force, and the service life of the torsion-shear-type bolt is ensured. For example, CN201620538801.8, a hexagonal torsional shear type bolt, which includes a nut, a screw, a threaded portion, a torsional shear head, a concave hole, and a torsional shear notch, wherein the center lines of the nut, the screw, the threaded portion, the torsional shear head, the concave hole, and the torsional shear notch are disposed on the same straight line; one end of the screw cap is connected with the screw rod, and a polygonal concave hole is formed in the other end of the screw cap; most of the screw is provided with threads to form a thread part; the tail end of the threaded part is connected with a torsion shear head, the torsion shear head is a polygonal convex column, the polygonal convex column is matched with the polygonal concave hole of the screw cap in shape and size, and the polygonal convex column can be smoothly inserted into the concave hole of the screw cap; the junction of the torsion shear head and the thread part is provided with a torsion shear notch, and the junction is in an inverted cone. The scheme has the beneficial effects that: in the process of tightening the bolt, when the torque exceeds a determined value, the torsion shear head breaks off from the tail end of the screw rod, so that the proper degree of tightening can be ensured, and the surface of the tail end of the bolt is kept flat. Meanwhile, the bolt with the broken shear head can be continuously reused.
The above two bolts represent typical of existing shear bolts. However, the first solution has a rather complex structure and low production efficiency. The second scheme is simple compared with the first scheme, however, a V-shaped groove is formed between the torsion shear head and the screw rod, when the torsion shear head is broken and falls, the torsion shear is broken, and part of metal waste crushed aggregates or waste powder falls at the broken part, and when the torsion shear bolt is installed in high-precision mechanical equipment, particularly in a stage of maintaining and replacing a new torsion shear bolt, the falling metal waste crushed aggregates or waste powder influences the matching precision of other matching parts of the mechanical equipment, such as gear matching and the like.
Disclosure of Invention
The utility model aims to solve the problems and provides a hexagonal torsional shear type bolt and a bolt pair which can solve the technical problems.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the hexagonal torsional shear type bolt comprises a bolt body, wherein a plum blossom type torsional shear head is arranged at the front end of the bolt body, an annular groove is formed in the joint of the bolt body and the plum blossom type torsional shear head, an elastic sleeve is sleeved at one end, close to the annular groove, of the plum blossom type torsional shear head, and the notch of the annular groove is sealed by the elastic sleeve and abuts against one end, provided with the annular groove, of the bolt body.
In the hexagonal torsional shear type bolt, the inner wall of the elastic sleeve is provided with the inner plum blossom protrusion matched with the plum blossom type torsional shear head.
In the hexagonal torsional shear type bolt, one end of the elastic sleeve, which is propped against the bolt body, is provided with the shrinkage part.
In the hexagonal torsional shear type bolt, a plurality of magnetic sheets are arranged in the circumferential direction of the shrinkage part.
In the hexagonal torsional shear type bolt, the unilateral section of the annular groove comprises a straight groove bottom surface and inclined surfaces connected to two ends of the straight groove bottom surface, and the elastic sleeve is abutted against one inclined surface close to one end of the bolt body.
In the hexagonal torsional shear type bolt, one end of the bolt body, which is far away from the plum blossom type torsional shear head, is provided with a hexagonal head.
The utility model also provides a hexagonal torsional shear type bolt pair, which comprises the hexagonal torsional shear type bolt.
In the hexagonal torsional shear type bolt pair, a nut is sleeved on the hexagonal torsional shear type bolt.
In the hexagonal torsional shear type bolt pair, a locking space is formed between the nut and the hexagonal head of the hexagonal torsional shear type bolt, and at least one wave washer in the locking space is sleeved on the hexagonal torsional shear type bolt.
Compared with the prior art, the utility model has the advantages that:
the elastic sleeve can collect waste crushed aggregates and/or waste powder of products during breakage, and can prevent waste at the breakage position from falling on other accessories at the installation position during maintenance and replacement, so that the phenomena of secondary cleaning and the like are avoided.
Drawings
Fig. 1 is a schematic diagram of a hexagonal torsional shear type bolt structure provided by the utility model.
Fig. 2 is a schematic view showing an exploded state of an elastic sleeve of the hexagonal torsional shear type bolt provided by the utility model.
Fig. 3 is an enlarged schematic view of the structure at a in fig. 2.
Fig. 4 is a schematic view of the elastic sleeve structure provided by the utility model.
Fig. 5 is a schematic structural diagram of a second embodiment of the present utility model.
In the figure, a bolt body 1, a quincuncial type torsion shear head 10, an annular groove 11, a groove bottom straight surface 110, an inclined surface 111, a hexagonal head 12, an elastic sleeve 2, a necking part 20, a magnetic sheet 21, a nut 3 and a wave washer 4.
Detailed Description
The following are specific embodiments of the utility model and the technical solutions of the utility model will be further described with reference to the accompanying drawings, but the utility model is not limited to these embodiments.
Example 1
As shown in fig. 1 and 2, the hexagonal torsional shear type bolt comprises a bolt body 1, wherein the bolt body 1 is formed by forging, a quincuncial torsional shear head 10 is arranged at the front end of the bolt body 1, and certainly can be understood as a torsional shear head with a spline, and a hexagon head 12 is arranged at one end, far away from the quincuncial torsional shear head 10, of the bolt body 1. The hexagonal head 12 may be an inner hexagonal or an outer hexagonal, and of course, may be a plum blossom head type or the like.
As shown in fig. 2 and 3, an annular groove 11 is provided at the junction of the bolt body 1 and the quincuncial torsion shear head 10, specifically, the single-side section of the annular groove 11 of the present embodiment includes a groove bottom straight surface 110, and inclined surfaces 111 connecting both ends of the groove bottom straight surface 110. The two inclined surfaces 111 form an included angle of 120 degrees.
In the case of a torsion shear break, the junction between one of the inclined surfaces 111 and the groove bottom straight surface 110 can be selected to break. The abutting end of the elastic sleeve 2 exceeds the fracture position of the joint. Namely, the elastic sleeve 2 forms a space coating for the fracture zone.
As shown in fig. 1, 2 and 4, an elastic sleeve 2 is sleeved at one end of the quincuncial torsional shear head 10 close to the annular groove 11, the elastic sleeve 2 seals the notch of the annular groove 11 and abuts against one end of the bolt body 1, where the annular groove 11 is arranged.
In actual installation, the screw nut 3 is connected to the bolt body 1, a tool matched with the quincuncial torsional shear head 10 is sleeved on the quincuncial torsional shear head 10, the quincuncial torsional shear head 10 is rotated by the tool at an angle opposite to the screw thread rotation direction, and when the quincuncial torsional shear head 10 breaks, the bolt body 1 is installed in place.
In the breaking process, the elastic sleeve 2 can collect waste crushed aggregates and/or waste powder of products in breaking, and can prevent the waste crushed aggregates and/or waste powder from falling on other accessories at the installation position so as to prevent secondary cleaning and the like.
The tool is propped against one end of the elastic sleeve 2 far away from the bolt body 1, so that the elastic sleeve 2 can be prevented from falling off.
After fracture, the tool can directly remove the broken quincuncial torsional shear head 10.
As shown in fig. 1, 2 and 4, an inner plum blossom protrusion matched with the plum blossom type torsion shear head 10 is arranged on the inner wall of the elastic sleeve 2, and a shrinkage part 20 is arranged at one end of the elastic sleeve 2, which is abutted against the bolt body 1. And a stop shoulder is arranged at one end of the plum blossom type torsion shear head 10 close to the annular groove 11, a limit stop shoulder is arranged at one end of the elastic sleeve 2 provided with the inner plum blossom type bulge, and when the tool transfers the broken plum blossom type torsion shear head 10, the plum blossom type torsion shear head 10 can be prevented from falling off relative to the elastic sleeve 2 due to the cooperation of the stop shoulder and the limit stop shoulder.
The outer diameter of the elastic sleeve 2 is smaller than the inner diameter of the nut 3, so that the nut 3 can be smoothly sleeved on the bolt body 1, and the necking part 20 is an inclined necking part so as to have a certain elastic propping action. For example, the elastic sleeve 2 is made of a silicone material.
Next, a plurality of magnetic sheets 21 are provided in the circumferential direction of the reduced portion 20. The magnetic sheet 21 has a plurality of functions, for example, the elastic sleeve 2 can be prevented from coming off, and secondly, broken scrap can be magnetically adsorbed.
Example two
As shown in fig. 1 to 5, the present embodiment provides a hexagonal torsional shear type bolt pair including the hexagonal torsional shear type bolt of the first embodiment.
The hexagonal torsional shear type bolt is sleeved with a nut 3. A locking space is formed between the nut 3 and the hexagonal head 12 of the hexagonal shear bolt, on which at least one wave washer 4 is arranged in the locking space. The wave washer 4 serves the purpose of preventing loosening.
The number of wave washers 4 is 1-2. Of course, the wave washer 4 may also be replaced by a flat washer.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.
Claims (9)
1. The hexagonal torsional shear type bolt comprises a bolt body (1), wherein a plum blossom type torsional shear head (10) is arranged at the front end of the bolt body (1), an annular groove (11) is formed at the joint of the bolt body (1) and the plum blossom type torsional shear head (10), and the hexagonal torsional shear type bolt is characterized in that an elastic sleeve (2) is sleeved at one end, close to the annular groove (11), of the plum blossom type torsional shear head (10), and the notch of the annular groove (11) is closed and propped against one end part of the annular groove (11) formed in the bolt body (1).
2. Hexagonal torsional shear bolt according to claim 1, characterized in that the inner wall of the elastic sleeve (2) is provided with an inner plum blossom protrusion matching the plum blossom torsional shear head (10).
3. Hexagonal shear bolt according to claim 1, characterized in that the elastic sleeve (2) has a pinch portion (20) at one end abutting against the bolt body (1).
4. A hexagonal shear bolt according to claim 3, characterized in that the reduced mouth portion (20) is provided with a plurality of magnetic sheets (21) in the circumferential direction.
5. Hexagonal torsional shear bolt according to claim 1, characterized in that the single-sided section of the annular groove (11) comprises a groove bottom straight surface (110) and inclined surfaces (111) connected to both ends of the groove bottom straight surface (110), the elastic sleeve (2) being abutted against one of the inclined surfaces (111) near one end of the bolt body (1).
6. Hexagonal torsional shear bolt according to claim 1, characterized in that the end of the bolt body (1) remote from the quincuncial torsional shear head (10) is provided with a hexagonal head (12).
7. A hexagonal torsional shear type bolt pair, characterized in that it comprises a hexagonal torsional shear type bolt according to any one of claims 1-6.
8. The hexagonal torsional shear type bolt pair according to claim 7, wherein a nut (3) is sleeved on the hexagonal torsional shear type bolt.
9. Hexagonal shear bolt pair according to claim 8, characterized in that a locking space is formed between the nut (3) and the hexagonal head (12) of the hexagonal shear bolt, on which at least one wave washer (4) is fitted in the locking space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320582790.3U CN219911446U (en) | 2023-03-22 | 2023-03-22 | Hexagonal torsional shear type bolt and bolt pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320582790.3U CN219911446U (en) | 2023-03-22 | 2023-03-22 | Hexagonal torsional shear type bolt and bolt pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219911446U true CN219911446U (en) | 2023-10-27 |
Family
ID=88422947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320582790.3U Active CN219911446U (en) | 2023-03-22 | 2023-03-22 | Hexagonal torsional shear type bolt and bolt pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219911446U (en) |
-
2023
- 2023-03-22 CN CN202320582790.3U patent/CN219911446U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2018102164A4 (en) | Tapered pick holder | |
| US4915559A (en) | Lightweight fastener | |
| CN219911446U (en) | Hexagonal torsional shear type bolt and bolt pair | |
| CN212003889U (en) | Inner hexagonal and outer hexagonal screw | |
| CN103089779B (en) | Honeycomb thread-repairing connecting component with controllable preload and usage thereof | |
| CN209800516U (en) | Accurate moment control type locknut | |
| CN207961221U (en) | A kind of stop nut and threaded connector | |
| CN215980339U (en) | Fastener and installation screwdriver matched with same | |
| CN214146209U (en) | Novel push-type anti-loosening combined nut | |
| CN212536402U (en) | Nut capable of preventing loosening | |
| CN211820447U (en) | High pressure roller mill roller quick assembly structure | |
| CN204572727U (en) | The locking EXPANSION ANCHOR BOLTS of a kind of tube-expanding type | |
| CN209062953U (en) | A kind of tool for nut dismounting and installation | |
| CN205908608U (en) | Improve square nut that forms by tensile round nut | |
| CN207701073U (en) | A kind of drill jumbo lengthening push rod | |
| CN111981021A (en) | Nut capable of preventing loosening | |
| CN2560784Y (en) | Connecting bolt | |
| CN220869833U (en) | Mounting torque anti-misloading stud | |
| CN219795818U (en) | Anti-disassembly locking screw | |
| CN217814388U (en) | Anti-loosening structure for pin parts | |
| CN220311655U (en) | But quick replacement's hand riveter head | |
| CN202500880U (en) | Anti-loosening type steel wire screw sleeve | |
| CN217421807U (en) | High-strength bolt for universal shaft of rolling mill | |
| CN218462049U (en) | Socket head device of socket wrench | |
| CN115741590A (en) | Stud disassembling and assembling method and tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |