CN212859279U - Tightening device with adjustable fastening bolt prestressing force - Google Patents
Tightening device with adjustable fastening bolt prestressing force Download PDFInfo
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- CN212859279U CN212859279U CN202021600223.9U CN202021600223U CN212859279U CN 212859279 U CN212859279 U CN 212859279U CN 202021600223 U CN202021600223 U CN 202021600223U CN 212859279 U CN212859279 U CN 212859279U
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Abstract
The utility model provides a tightening device can debug of fastening screw prestressing force, the stability of its activity briquetting is high, and its little screw length shortens simultaneously, has reduced the rupture risk. It includes the tightening head, the inside hexagon through-hole that is equipped with of tightening head, the inside briquetting that is equipped with swing joint of hexagon through-hole, the quantity of briquetting is three, connect little screw rod, its characterized in that on the briquetting: the locking device comprises a hexagonal through hole, a plurality of small screw rods and a plurality of locking heads, wherein the hexagonal through hole is provided with mounting holes at intervals and penetrating through the locking heads, fixing nuts fixedly connected with the inside of the mounting holes are arranged in the mounting holes, the rod bodies of the small screw rods extend into the inside of the mounting holes and are in threaded connection with the fixing nuts, the outer end parts of the two small screw rods are fixedly connected with first locking nuts, the outer end part of the other small screw rod is fixedly connected with a second locking nut, the second locking nut is sleeved outside a connecting rod, and the connecting rod is fixedly connected with the outer end face of the locking head.
Description
Technical Field
The utility model relates to an assembly work piece design technical field specifically is a tightening device with adjustable fastening bolt prestressing force.
Background
The opening width of the adjustable wrench can be adjusted within a certain size range, so that bolts or nuts with different specifications can be screwed, and when the adjustable wrench is used, the gap between the adjustable wrench and the bolt or nut to be screwed is too large, so that people are easy to slip to hurt arms.
Chinese utility model patent application No. 201720112966.3 discloses a tightening device with adjustable fastening bolt prestressing force, drives movable briquetting through adjusting big lock nut and little lock nut respectively and compresses tightly fixedly to the nut to the convenience is to the nut fastening work of unidimensional not, has solved the above-mentioned problem of skidding, nevertheless because the activity briquetting is separated by respectively and is set up every one side of the hexagon through-hole in screwing up the head, still connect little screw rod on the activity briquetting, fixation nut and little lock nut all with little screw rod be connected and install in the outside of screwing up the head, then lead to two aspects problem: the movable pressing block is guided by the small screw rod, the movable pressing block is easy to deviate after being used for a long time, so that the effect of pressing the fixing nut is poor, and the movable pressing block is easy to bend or break due to the fact that the small screw rod is long in length, so that the service life of the screwing device is short.
SUMMERY OF THE UTILITY MODEL
Screw up device's activity briquetting easily takes place the skew after using a period to current fastening bolt prestressing force and leads to compressing tightly the fixation nut effect poor, and little screw length is easily buckled or the rupture, leads to influencing this fastener life's problem for the length partially, the utility model provides a device is screwed up to adjustable tightening screw prestressing force, the stability of its activity briquetting is high, and its little screw length shortens simultaneously, has reduced the rupture risk.
The technical scheme is as follows: the utility model provides a tightening means with adjustable fastening bolt prestressing force, its includes the tightening head, the inside hexagon through-hole that is equipped with of tightening head, the inside briquetting that is equipped with swing joint of hexagon through-hole, the quantity of briquetting is three, connect little screw rod on the briquetting, its characterized in that: mounting holes which are spaced and penetrate through the tightening head are formed in the edges of the hexagonal through holes, fixed nuts which are fixedly connected are arranged in the mounting holes, the rod bodies of the small screw rods extend into the mounting holes and are in threaded connection with the fixed nuts, the outer end parts of the two small screw rods are fixedly connected with first locking nuts, the outer end part of the other small screw rod is fixedly connected with a second locking nut, the second locking nut is sleeved outside a connecting rod, and the connecting rod is fixedly connected with the outer end face of the tightening head;
it is further characterized in that: the spare end part of the connecting rod is provided with a movably connected fastening handle, one end of the fastening handle is fixedly connected with a hexagonal prism through a large screw rod, the outer end face of the first locking nut is provided with a slot matched with the hexagonal prism, the outer end part of the connecting rod is provided with a thread groove matched with the large screw rod, and the bottom of the thread groove is provided with a slot matched with the hexagonal prism;
a placing groove communicated with the mounting hole is formed in the bottom wall of the hexagonal through hole, the depth of the placing groove is slightly smaller than the thickness of the pressing block, and the fixing nut is located at the bottom of the mounting hole and is flush with the bottom of the placing groove;
the second locking nut is slidably mounted on the connecting rod through a sliding chute arranged on the connecting rod, and a compression spring fixedly connected is arranged between the bottom of the second locking nut and the bottom of the sliding chute;
the outer end surface of the pressing block is arc-shaped, and the outer end surface of the pressing block is also provided with an anti-slip layer.
After having adopted above-mentioned structure, because the little screw that connects the briquetting moves along the mounting hole that runs through hexagon through-hole limit, then this mounting hole can regard as the direction route to make this briquetting be difficult for taking place the skew, move fixing bolt to the mounting hole inside simultaneously, further make the length of little screw can shorten, reduced the risk of bending deformation or rupture.
Drawings
FIG. 1 is a sectional view of the overall structure of the present invention;
FIG. 2 is an enlarged view of the structure A of FIG. 1 according to the present invention;
FIG. 3 is a schematic structural view of the handle of the present invention;
in the figure: 1. tightening a head; 2. a hexagonal through hole; 3. briquetting; 4. mounting holes; 5. fixing a nut; 6. a small screw; 7. a first lock nut; 8. a second lock nut; 9. a connecting rod; 10. fastening a handle; 11. a hexagonal prism; 12. a slot; 13. a thread groove; 14. a placement groove; 15. a chute; 16. compressing the spring.
Detailed Description
As shown in fig. 1 and 2, the tightening device with the prestress adjustable for the fastening bolt comprises a tightening head 1, wherein a hexagonal through hole 2 is formed in the tightening head 1, a pressing block 3 is movably connected with the hexagonal through hole 2, the pressing block 3 is connected with a small screw 6, the number of the pressing blocks 3 is three, the outer end surface of the pressing block 3 is arc-shaped, and an anti-slip layer is further arranged on the outer end surface of the pressing block. The edge along hexagon through-hole 2 is equipped with spaced, the mounting hole 4 that runs through tightening head 1, the inside fixed nut 5 that is equipped with fixed connection of mounting hole 4, the pole body of the little screw rod 6 that is connected with briquetting 3 stretches into the inside of mounting hole 4 and with fixed nut 5 threaded connection, the outer tip of two little screw rods 6 is equipped with fixed connection first lock nut 7 wherein, the outer tip fixed connection second lock nut 8 of another little screw rod 6, second lock nut 8 suit is in the outside of connecting rod 9, connecting rod 9 and the outer terminal surface fixed connection of tightening head 1. During the use, with this fastener's hexagon through-hole 2 suit in the nut outer terminal surface of treating the fastening, adjust first fastening nut and drive little screw rod 6 and rotate to drive briquetting 3 and take fastening nut to compress tightly fixedly, conveniently fasten the work, because this little screw rod 6 moves back and forth along mounting hole 4, therefore this mounting hole 4 can be as the direction route, make this briquetting 3 steady movement, prevent to warp, because fixation nut 5 arranges the inside of mounting hole 4 in again, thereby can shorten the length of short and small screw rod 6, reduced the risk of bending or breaking.
Preferably, a placing groove 14 communicated with the mounting hole 4 is arranged on the bottom wall of the hexagonal through hole 2, and the depth of the placing groove 14 is slightly smaller than the thickness of the pressing block 3. Through the setting of this standing groove 14, can place briquetting 3 in inside this standing groove 14 to make the fastening bolt's that this fastener can be suitable for size range bigger, improve application scope. Preferably, the fixing nut 5 is located at the bottom of the mounting hole 4 and is flush with the bottom of the placing groove 14.
Preferably, the free end of the connecting rod 9 is provided with a movably connected fastening handle 10. One end of the fastening handle 10 is fixedly connected with a hexagonal prism 11 through a large screw, a slot 12 matched with the hexagonal prism 11 is arranged on the outer end face of the first locking nut 7, a thread groove 13 matched with the large screw is arranged at the outer end part of the connecting rod 9, and the slot 12 matched with the hexagonal prism 11 is arranged at the bottom of the thread groove 13. Through the setting of this fastening handle 10, it can screw up first lock nut 7 through the hexagonal prism 11 that sets up on it, can save and use other reinforcement instrument to screw up this first lock nut 7 for this tightening device uses more conveniently, and this fastening handle 10 makes the length of connecting rod 9 longer simultaneously, has increased and has turned to the moment, and is more laborsaving.
Preferably, the second lock nut 8 is slidably mounted on the connecting rod 9 through a sliding slot 15 formed in the middle of the connecting rod 9, a compression spring 16 fixedly connected is arranged between the bottom of the second lock nut 8 and the bottom of the sliding slot 15, and an upward elastic force is provided through the compression spring 16, so that the pressing block 3 connected with the second lock nut 8 is more stable.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. The utility model provides a tightening means with adjustable fastening bolt prestressing force, its includes the tightening head, the inside hexagon through-hole that is equipped with of tightening head, the inside briquetting that is equipped with swing joint of hexagon through-hole, the quantity of briquetting is three, connect little screw rod on the briquetting, its characterized in that: the tightening head is arranged on the outer side of the hexagonal through hole, the hexagonal through hole is provided with mounting holes at intervals and penetrates through the tightening head, fixed nuts which are fixedly connected are arranged in the mounting holes, the rod bodies of the small screw rods extend into the mounting holes and are in threaded connection with the fixed nuts, the outer end parts of the two small screw rods are fixedly connected with first locking nuts, the outer end part of the other small screw rod is fixedly connected with a second locking nut, the second locking nut is sleeved outside a connecting rod, and the connecting rod is fixedly connected with the outer end face of the tightening head.
2. The tightening device with adjustable fastening bolt prestress according to claim 1, characterized in that: the spare end part of the connecting rod is provided with a movably connected fastening handle, one end of the fastening handle is fixedly connected with the hexagonal prism through a large screw rod, the outer end face of the first locking nut is provided with a slot matched with the hexagonal prism, the outer end part of the connecting rod is provided with a thread groove matched with the large screw rod, and the bottom of the thread groove is provided with a slot matched with the hexagonal prism.
3. The tightening device with adjustable fastening bolt prestress according to claim 2, characterized in that: and a placing groove communicated with the mounting hole is formed in the bottom wall of the hexagonal through hole, the depth of the placing groove is slightly smaller than the thickness of the pressing block, and the fixing nut is located at the bottom of the mounting hole and is flush with the bottom of the placing groove.
4. A tightening bolt prestress-adjustable tightening device according to claim 3, characterized in that: the second locking nut is slidably mounted on the connecting rod through a sliding groove formed in the connecting rod, and a compression spring fixedly connected is arranged between the bottom of the second locking nut and the bottom of the sliding groove.
5. The tightening device with adjustable fastening bolt prestress according to claim 4, characterized in that: the outer end surface of the pressing block is arc-shaped, and the outer end surface of the pressing block is also provided with an anti-slip layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021600223.9U CN212859279U (en) | 2020-08-05 | 2020-08-05 | Tightening device with adjustable fastening bolt prestressing force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021600223.9U CN212859279U (en) | 2020-08-05 | 2020-08-05 | Tightening device with adjustable fastening bolt prestressing force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212859279U true CN212859279U (en) | 2021-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021600223.9U Active CN212859279U (en) | 2020-08-05 | 2020-08-05 | Tightening device with adjustable fastening bolt prestressing force |
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| Country | Link |
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| CN (1) | CN212859279U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114216491A (en) * | 2021-10-26 | 2022-03-22 | 中国科学院昆明动物研究所 | Elevated O-maze and movable test box with same |
-
2020
- 2020-08-05 CN CN202021600223.9U patent/CN212859279U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114216491A (en) * | 2021-10-26 | 2022-03-22 | 中国科学院昆明动物研究所 | Elevated O-maze and movable test box with same |
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