CN213039613U - Fastening device applying wedge-shaped geometric principle to prevent looseness and locking - Google Patents
Fastening device applying wedge-shaped geometric principle to prevent looseness and locking Download PDFInfo
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- CN213039613U CN213039613U CN202022234459.1U CN202022234459U CN213039613U CN 213039613 U CN213039613 U CN 213039613U CN 202022234459 U CN202022234459 U CN 202022234459U CN 213039613 U CN213039613 U CN 213039613U
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Abstract
The utility model discloses an application wedge geometry principle locking fastener belongs to bumper shock absorber sleeve technical field, including the sleeve, wedge bolt and sleeve are the equal open-ended hollow structure in top and bottom, are provided with a plurality of interior conical surface wedge nut in the sleeve, and the top surface of each interior conical surface wedge all with the plane looks parallel and level at telescopic top place, form between the every two interior conical surface wedges and put into the passageway, the bottom of putting into the passageway is provided with keeps away the barrier passageway, wedge bolt detachably sets up in telescopic inside, wedge nut detachably sets up between sleeve and wedge bolt. The utility model discloses wedge nut screws up the back, and the axial force is balanced by wedge geometry face and spring shim simultaneously, and the screw rod is taut balanced state all the time, and the pretension of wedge geometry face inflation, spring shim prevent to warp and produce the pretension, so screw thread countershaft power is balanced, and wedge nut is difficult not hard up, and the locking cover prevents that the wedge bolt is rotatory, and locking effect is more obvious.
Description
Technical Field
The utility model relates to a bumper shock absorber sleeve technical field especially relates to an application wedge geometry principle locking fastener.
Background
The bolt and the nut are the most common fastening and matching form, the variety and the specification of the bolt and the nut are various, the performance and the application are different, the degrees of generalization, standardization and serialization are high, the bolt and the nut can be quickly matched, the connection is reliable, the cost is low, and the bolt and the nut are suitable for being installed and connected on a construction site. Fastening bolts are arranged in actual rail transit shear hinge bolt fastening application, and fastening is completed through the bolts and pre-buried sleeves with internal threads.
In the existing rail transit shear hinge bolt fastening technology, the embedded steel sleeve with internal threads and the bolt generating pretightening force have the following defects in the technical process: the embedded steel sleeve with the internal thread cannot be replaced once being installed, a bolt is subjected to a large shearing force in the actual use process, the internal thread and the external thread are screwed into the contact position to serve as a shearing damage danger point, once damage and repair are difficult, the original working state is difficult to recover even after repair, and the reliability of the embedded steel sleeve with the internal thread and the external thread is difficult to ensure in the long-term use process; the internal and external threads are exposed in the environment with moist and periodic load in the long-term use process, the threads are easy to adhere and rust, and the later maintenance, replacement and disassembly are also difficult; in the alternating load environment of frequent contact vibrations, the bolt takes place to become flexible easily, influences the safety of driving a vehicle, needs regularly pretension bolt again, and the maintenance process is wasted time and energy.
Disclosure of Invention
Aiming at the problems of the outer sleeve of the existing vibration isolator, the fastening device applying the wedge geometry principle to prevent looseness and locking is provided.
The specific technical scheme is as follows:
a fastening device for locking and loosening prevention using wedge geometry, comprising:
the sleeve is of a hollow shell structure with openings at the top and the bottom, a plurality of inner conical wedge blocks are arranged on the circumferential wall of the sleeve, the top surface of each inner conical wedge block is flush with the plane where the top of the sleeve is located, and an embedding channel is formed between every two adjacent inner conical wedge blocks;
the wedge-shaped head bolt comprises a screw rod and an outer conical surface wedge-shaped head nut, one end of the screw rod is detachably arranged in the sleeve, the outer edge of one end of the screw rod is provided with the outer conical surface wedge-shaped head nut, the outer peripheral wall of the outer conical surface wedge-shaped head nut is provided with a plurality of outer conical surface wedge blocks, an obstacle avoidance channel is formed between every two adjacent outer conical surface wedge blocks, and the shape of each outer conical surface wedge block is respectively matched with the shape of one inner conical surface wedge block;
the outer edge of the other end of the screw rod is detachably provided with the wedge-shaped nut.
The fastening device applying the anti-loosening locking of the wedge-shaped geometric principle further comprises an anti-loosening sleeve and a spring gasket, the head of the anti-loosening sleeve is cylindrical, the outer edge of the other end of the screw is provided with the anti-loosening sleeve, the wedge-shaped nut is sleeved on the anti-loosening sleeve, the spring gasket is detachably arranged on the anti-loosening sleeve, and the spring gasket is located on the lower side of the wedge-shaped nut.
Above-mentioned locking fastener of application wedge geometry principle, wherein, the locking cover has the locking cover head, the one end of locking cover head is provided with the locking cover chock, the locking cover chock is kept away from the one end setting of locking cover head is in telescopic inner wall with between the periphery wall of screw rod.
The fastening device applying the wedge-shaped geometric principle for locking further comprises a seal head, and the seal head is arranged at the bottom of the sleeve.
The fastening device applying the wedge-shaped geometric principle locking is characterized in that an anti-disengagement rib is arranged on the peripheral wall of the outer side of the sleeve, and the anti-disengagement rib is spiral.
The fastening device applying the wedge geometry principle locking further comprises limiting blocks, and one side of each inner conical surface wedge block is provided with one limiting block respectively.
Compared with the prior art, the technical scheme has the positive effects that:
(1) the utility model discloses utilized the wedge geometry principle to replace the internal thread of sleeve among the prior art, divided into two the internal thread, changed into the sleeve that has the interior conical surface wedge and the wedge bolt that has the exterior conical surface wedge, the shape of exterior conical surface wedge and interior conical surface wedge adapts to each other, leans on the inflation pretension to play the supporting role, and the wedge bolt can be changed, guarantees the integrality of sleeve, increases the use reliability of sleeve;
(2) the utility model discloses possible fine locking ability, wedge nut screws up the back, and the axial force is balanced by wedge geometry face and spring shim simultaneously, and the screw rod is taut balanced state all the time, and the pretension of wedge geometry face inflation, spring shim prevent to warp and produce the pretension, so screw thread countershaft power is balanced, and wedge nut is difficult not hard up. Meanwhile, in consideration of the conditions of vibration, alternating load and the like of a use environment, after the wedge-shaped head bolt is installed and positioned, the anti-loosening sleeve is arranged to prevent the wedge-shaped head bolt from rotating, and the anti-loosening effect is more obvious;
(3) the utility model discloses installation and change are easy, convenient, and the wedge head bolt gets into in proper order and puts into the passageway and keep away the barrier passageway, installs in telescopic bottom, and after the stopper was touched in clockwise rotation, the manpower toward outer taut support and the location of accomplishing the wedge head bolt promptly, then install anti-loosening cover, spring shim and wedge nut in proper order to accomplish the installation. Meanwhile, when the wedge-shaped head bolt is replaced, the wedge-shaped nut is properly loosened, the anti-loosening sleeve is taken out firstly, then the wedge-shaped head bolt can be taken down conveniently, the problems of thread corrosion and adhesion are avoided, and time and efficiency are saved.
Drawings
Fig. 1 is a schematic overall structural view of a first embodiment of a fastening device for locking and loosening according to the wedge-shaped geometric principle of the present invention;
FIG. 2 is a detailed view of a sleeve of a fastening device for locking and loosening prevention by using the wedge geometry principle of the present invention;
FIG. 3 is a top view of the sleeve of the fastening device using wedge geometry for anti-loosening and locking of the present invention;
FIG. 4 is a cross section A-A of a fastening device for locking and loosening prevention using the wedge geometry of the present invention;
FIG. 5 is a cross-section B-B of a fastening device for locking and loosening prevention using the wedge geometry of the present invention;
FIG. 6 is a cross-section of the C-C of a fastening device for locking and loosening prevention using the wedge geometry of the present invention;
FIG. 7 is a detailed view of the outer conical wedge bolt shown in FIG. 1 of the locking fastening device using the wedge geometry principle of the present invention;
FIG. 8 is a top view of a wedge bolt of a fastening device for anti-loosening and locking based on the wedge geometry of the present invention;
FIG. 9 is a cross-section of a fastening device D-D of the present invention using wedge geometry for anti-loosening and locking;
FIG. 10 is a cross-section of the fastening device of the present invention showing the E-E of the locking device using the wedge geometry principle;
FIG. 11 is a schematic view of an anti-loose sleeve structure of a fastening device using wedge geometry for anti-loose and locking;
FIG. 12 is a detailed view of the head of a fastening device using wedge geometry for anti-loosening and locking according to the present invention;
fig. 13 is a schematic structural view of a sleeve of a second embodiment of a fastening device for locking and loosening according to the wedge-shaped geometric principle of the present invention;
fig. 14 is a schematic view of a sleeve of a third embodiment of a fastening device using wedge geometry for anti-loosening and locking according to the present invention;
fig. 15 is a schematic view of a sleeve of a fourth embodiment of a fastening device for locking and loosening according to the wedge geometry of the present invention;
fig. 16 is a schematic view of a screw of a fourth embodiment of a fastening device for locking by using wedge geometry of the present invention.
In the drawings: 1. a wedge nut; 2. a spring washer; 3. an anti-loose sleeve; 4. a wedge head bolt; 5. a sleeve; 6. sealing the end; 7. preventing the ribs from falling out; 8. placing into a channel; 9. an inner conical surface wedge block; 10. a limiting block; 11. a screw; 12. an outer conical surface wedge block; 13. obstacle avoidance channels; 14. an anti-loosening sleeve head; 15. an anti-loose sleeve chock block; 16. a seal head connecting plug; 17. a seal head top cover; 18. a rectangular groove; 19. a locking groove; 20. and a locking block.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
FIG. 1 is a schematic view showing the overall structure of a first embodiment of a fastening device using wedge geometry principle locking of the present invention, FIG. 2 is a detailed schematic view of a sleeve of a fastening device using wedge geometry principle locking of the present invention, FIG. 3 is a top view of a sleeve of a fastening device using wedge geometry principle locking of the present invention, FIG. 4 is a cross-section A-A of a fastening device using wedge geometry principle locking of the present invention, FIG. 5 is a cross-section B-B of a fastening device using wedge geometry principle locking of the present invention, FIG. 6 is a cross-section C-C of a fastening device using wedge geometry principle locking of the present invention, FIG. 7 is a detailed schematic view of an outer wedge head bolt in FIG. 1 of a fastening device using wedge geometry principle locking of the present invention, FIG. 8 is a top view of a wedge-head bolt of a fastening device using wedge-shaped geometric principle of the present invention, FIG. 9 is a D-D section of the fastening device using wedge-shaped geometric principle of the present invention, FIG. 10 is an E-E section of the fastening device using wedge-shaped geometric principle of the present invention, FIG. 11 is a schematic view of a locking sleeve structure of the fastening device using wedge-shaped geometric principle of the present invention, FIG. 12 is a detailed schematic view of a head of the fastening device using wedge-shaped geometric principle of locking of the present invention, FIG. 13 is a schematic view of a sleeve structure of a second embodiment of the fastening device using wedge-shaped geometric principle of locking of the present invention, FIG. 14 is a schematic view of a sleeve of a third embodiment of the fastening device using wedge-shaped geometric principle of locking of the present invention, fig. 15 is a schematic view of a sleeve of a fourth embodiment of the fastening device using wedge-shaped geometric principle of the present invention, fig. 16 is a schematic view of a screw rod of the fourth embodiment of the fastening device using wedge-shaped geometric principle of the present invention, please refer to fig. 1 to 16, which show a fastening device using wedge-shaped geometric principle of locking, including a sleeve 5, a wedge bolt 4 and a wedge nut 1, wherein the sleeve 5 has a hollow shell structure with an opening at the top and the bottom, a plurality of inner conical wedges 9 are arranged in the sleeve 5, the top surface of each inner conical wedge 9 is flush with the plane of the top of the sleeve 5, an insertion channel 8 is formed between every two adjacent inner conical wedges 9, the wedge bolt 4 includes a screw rod 11 and an outer conical wedge nut, one end of the screw rod 11 is detachably arranged inside the sleeve 5, the outer fringe of the one end of screw rod 11 is equipped with outer conical surface wedge-head nut, is equipped with a plurality of outer conical surface wedges 12 on the periphery wall of outer conical surface wedge-head nut, forms one between every two adjacent outer conical surface wedges 12 and keeps away barrier channel 13, and the shape of each outer conical surface wedge 12 matches with the shape of an inner conical surface wedge 9 respectively, and the outer fringe detachably of the other end of screw rod 11 is equipped with wedge nut 1.
The above is merely an example of the preferred embodiments of the present invention, and the embodiments and the protection scope of the present invention are not limited thereby.
The utility model discloses still have following embodiment on above-mentioned basis:
the utility model discloses a further embodiment, please continue to refer to as shown in fig. 1 to 16, the utility model relates to an application wedge geometry principle locking fastening device still includes locking sleeve 3 and spring shim 2, and locking sleeve head 14 is cylindricly, and locking sleeve 3's internal diameter is greater than the external diameter of screw rod 11, and the outer fringe of the other end of screw rod 11 is equipped with locking sleeve 3, and the cover of wedge nut 1 is established on locking sleeve 3, and 2 detachably settings of spring shim are on locking sleeve 3, and spring shim 2 is located wedge nut 1's downside.
Further, as a preferred embodiment, the anti-loose sleeve 3 has an anti-loose sleeve head 14, one end of the anti-loose sleeve head 14 is provided with an anti-loose sleeve plug 15, and one end of the anti-loose sleeve plug 15 away from the anti-loose sleeve head 14 is arranged between the inner wall of the sleeve 5 and the outer peripheral wall of the screw 11.
Further, as a preferred embodiment, still include the head, sleeve 5 bottom is equipped with a head.
Further, as a preferred embodiment, the outer peripheral wall of the sleeve 5 is provided with a slip-off preventing rib 7.
Further, as a preferred embodiment, the wedge-shaped structure further comprises a limiting block 10, and one side of each inner conical surface wedge-shaped block 9 is provided with a limiting block 10.
Preferably, the height of the anti-loose sleeve stopper 15 is greater than half of the height of the inner tapered wedge 9, and the arc length of the anti-loose sleeve stopper 15 is equal to the arc length of each insertion passage 8.
Further, as a preferred embodiment, a sealing head 6 is hermetically inserted and connected to the bottom of the sleeve 5.
Further, as a preferred embodiment, the end socket 6 comprises an end socket connecting plug 16 and an end socket top cover 17, the end socket connecting plug 16 is integrally arranged at the top of the end socket top cover 17, and the end socket connecting plug 16 is inserted into the bottom of the sleeve 5.
Preferably, the end socket 6 is made of rubber.
Preferably, the head connecting plug 16 is integrally disposed at the center of the top of the head cover 17.
Preferably, the end socket 6 is in a circular truncated cone shape.
Further, as a preferred embodiment, the outer peripheral wall of the sleeve 5 is provided with a slip-off preventing rib 7.
Preferably, the anti-coming-off ribs 7 are helical.
Preferably, the anti-coming-off rib 7 is integrally provided on the peripheral wall outside the sleeve 5.
Preferably, the anti-slip ribs 7 are arranged helically on the circumferential wall outside the sleeve 5.
Further, as a preferred embodiment, a limiting block 10 is arranged below each inner conical surface wedge block 9, and a plurality of limiting blocks 10 are arranged on the circumferential wall of the inner side of the sleeve 5 at equal intervals.
Preferably, each stopper 10 is disposed on a vertical side of each inner tapered wedge 9, which is a second side of the inner tapered wedge rotated clockwise.
Preferably, each limiting block 10 extends to the connecting plug of the end socket 6.
Preferably, the sleeve 5 is made of nylon and glass fiber flame-retardant materials.
Preferably, the sleeve 5 is manufactured by a casting process.
Further, as a preferred embodiment, the number of the inner tapered wedge blocks 9 is three, and the number of the outer tapered wedge blocks 12 is three, which is the first embodiment of the present invention.
Further, as a preferred embodiment, the number of the inner tapered wedge blocks 9 is four, and the number of the outer tapered wedge blocks 12 is four, which is the second embodiment of the present invention.
Further, as a preferred embodiment, the sleeve 5 has a circular truncated cone shape.
Further, as a preferred embodiment, the sleeve 5 has a cylindrical shape, which is the third embodiment of the present invention.
The sleeve 5 of the present invention may have a fourth embodiment: the inside of sleeve 5 is provided with rectangular channel 18 and with rectangular latch segment shape assorted locking groove 19, rectangular channel 18 and locking groove 19 are provided with first opening and second opening respectively, and first opening and second opening set up respectively on sleeve 5's top surface and bottom surface, are provided with rectangular latch segment 20 below screw rod 11, and rotatory screw rod 11 again after the lower extreme of screw rod 11 inserts the rectangular channel for latch segment 20 gets into locking groove 19 and locks.
Preferably, the locking groove is in a perpendicular relationship to the rectangular groove.
The working process of the utility model is as follows: each outer conical surface wedge block 12 on the outer conical surface wedge head nut at the lower end of the screw rod 11 corresponds to one placing channel 8, then the screw rod 11 slides into the sleeve 5, the anti-loosening sleeve plug block 15 is located between the inner wall of the sleeve 5 and the outer peripheral wall of the screw rod 11 and used for preventing the screw rod 11 from loosening, then the screw rod 11 is controlled to rotate through the wedge nut 1, the screw rod 11 drives the outer conical surface wedge block 12 on the outer conical surface wedge head nut to rotate in the sleeve 5, the outer conical surface wedge block 12 is abutted to the inner conical surface wedge block 9 in the sleeve 5, when the outer conical surface wedge block 12 touches the limiting block 10, the screw rod 11 stops rotating, then the screw rod 11 is controlled to move upwards through the wedge nut 1, the outer conical surface wedge block 12 and the inner conical surface wedge block 9 are tightly pressed and locked, and therefore the screw rod 11 and the sleeve 5 are fixed. When the screw 11 needs to be disassembled, the screw 11 can be taken out only by pushing the screw 11 downwards to separate the outer conical surface wedge block 12 from the inner conical surface wedge block 9.
The utility model discloses be divided into two with the internal thread, the shape adaptation each other of outer conical surface wedge 12 and interior conical surface wedge 9 leans on the inflation pretension to play the supporting role, and wedge head bolt 4 can be changed, guarantees sleeve 5's integrality, increases sleeve 5's use reliability.
The utility model discloses possible fine locking ability, wedge nut 1 screws up the back, and the axial force is balanced by wedge geometry face and spring shim 2 simultaneously, and screw rod 11 is taut balanced state all the time, and wedge geometry face inflation pretension, spring shim 2 prevent to warp and produce the pretension, so the screw thread counter shaft power is balanced, and wedge nut 1 is difficult not hard up. Meanwhile, in consideration of the conditions of vibration, alternating load and the like of the use environment, after the wedge-shaped head bolt 4 is installed and positioned, the anti-loosening sleeve 3 is further arranged to prevent the wedge-shaped head bolt 4 from rotating, and the anti-loosening effect is more obvious.
The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, and it should be appreciated by those skilled in the art that various equivalent substitutions and obvious changes made in the specification and drawings should be included within the scope of the present invention.
Claims (6)
1. A fastening device for locking and loosening prevention by using wedge geometry principle, comprising:
the sleeve is of a hollow shell structure with openings at the top and the bottom, a plurality of inner conical wedge blocks are arranged on the inner peripheral wall of the sleeve, the top surface of each inner conical wedge block is flush with the plane where the top of the sleeve is located, and an embedding channel is formed between every two adjacent inner conical wedge blocks;
the wedge-shaped head bolt comprises a screw rod and an outer conical surface wedge-shaped head nut, one end of the screw rod is detachably arranged in the sleeve, the outer edge of one end of the screw rod is provided with the outer conical surface wedge-shaped head nut, the outer peripheral wall of the outer conical surface wedge-shaped head nut is provided with a plurality of outer conical surface wedge blocks, an obstacle avoidance channel is formed between every two adjacent outer conical surface wedge blocks, and the shape of each outer conical surface wedge block is respectively matched with the shape of one inner conical surface wedge block;
the outer edge of the other end of the screw rod is detachably provided with the wedge-shaped nut.
2. The fastening device for locking by using wedge geometric principles as claimed in claim 1, further comprising an anti-loosening sleeve and a spring washer, wherein the head of the anti-loosening sleeve is cylindrical, the anti-loosening sleeve is provided on the outer edge of the other end of the screw, the wedge nut is sleeved on the anti-loosening sleeve, the spring washer is detachably provided on the anti-loosening sleeve, and the spring washer is located on the lower side of the wedge nut.
3. The fastening device for locking by applying wedge geometric principle according to claim 2, wherein the anti-loose sleeve is provided with an anti-loose sleeve head, one end of the anti-loose sleeve head is provided with an anti-loose sleeve plug block, and one end of the anti-loose sleeve plug block, which is far away from the anti-loose sleeve head, is arranged between the inner wall of the sleeve and the outer peripheral wall of the screw rod.
4. The fastening device for preventing loosening and locking by using wedge-shaped geometric principle as claimed in claim 1, further comprising a sealing head, wherein the sealing head is arranged at the bottom of the sleeve.
5. The fastening device for preventing loosening and locking by using wedge-shaped geometric principle as claimed in claim 1, wherein an anti-falling rib is provided on a peripheral wall of an outer side of the sleeve, and the anti-falling rib is in a spiral shape.
6. The locking fastener of claim 1 further comprising a stop block, wherein one side of each of said inner tapered wedge blocks is provided with a said stop block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022234459.1U CN213039613U (en) | 2020-10-09 | 2020-10-09 | Fastening device applying wedge-shaped geometric principle to prevent looseness and locking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022234459.1U CN213039613U (en) | 2020-10-09 | 2020-10-09 | Fastening device applying wedge-shaped geometric principle to prevent looseness and locking |
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| Publication Number | Publication Date |
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| CN213039613U true CN213039613U (en) | 2021-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022234459.1U Active CN213039613U (en) | 2020-10-09 | 2020-10-09 | Fastening device applying wedge-shaped geometric principle to prevent looseness and locking |
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| CN (1) | CN213039613U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847318A (en) * | 2021-08-09 | 2021-12-28 | 中铁隆昌铁路器材有限公司 | Anti-loosening embedded sleeve assembly and assembling method thereof |
-
2020
- 2020-10-09 CN CN202022234459.1U patent/CN213039613U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847318A (en) * | 2021-08-09 | 2021-12-28 | 中铁隆昌铁路器材有限公司 | Anti-loosening embedded sleeve assembly and assembling method thereof |
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