Auxiliary anti-rotation device for fastening bolt

Abstract

The auxiliary anti-rotation device comprises a supporting arm and a plurality of clamping jaws, a sliding groove is formed in the supporting arm in the length direction of the supporting arm, one end of each clamping jaw is provided with a clamping base matched with the sliding groove, and the clamping bases of the clamping jaws are sequentially clamped in the sliding groove. The other ends of the multiple clamping jaws extend towards the same side of the supporting arm, a clamping groove for clamping the head of a bolt is formed between the extending ends of every two adjacent clamping jaws, each clamping jaw can freely slide in the forming direction of the sliding groove so as to adjust the distance between the clamping jaws, and the end, provided with the clamping base, of each clamping jaw is provided with a locking bolt. The locking bolt penetrates through the clamping jaw and can abut against the supporting arm to lock the position of the clamping jaw. According to the auxiliary anti-rotation device, the heads of the multiple sets of bolts installed side by side can be clamped and fixed through the multiple clamping jaws, the auxiliary anti-rotation device can be repeatedly used for the bolts of the same installation specification, the nut fastening efficiency is improved, the bolts are installed more conveniently, and the assembling efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt fastening technical field, concretely relates to an auxiliary anti-rotation device for bolt fastening. BACKGROUND

[0002] Bolt is a kind of mechanical connecting piece with screw thread, usually by head and stem two parts, is the nut of cylindrical threaded fastener, is widely used in various machinery, building and structure.In the assembly process of some large mechanical equipment, usually need to install multiple groups of bolts and cooperate nut and fasten, to ensure the strength and stability of equipment connection.Bolt and nut in the process of cooperating fastening, often bolt and nut together with rotation, so as to not reach the purpose of fastening, usually need artificial one hand fastening nut, while the other hand through spanner and hold bolt head, limit its rotation, but due to the parallel installation bolt quantity is more, need artificial fastening in turn, so it needs to fasten nut every time, through spanner and hold the corresponding bolt head, there is not enough convenient bolt installation, lead to low assembly efficiency. SUMMARY

[0003] Therefore, it is necessary to provide an auxiliary anti-rotation device for bolt fastening to solve the technical problems of inconvenient bolt installation and low assembly efficiency in the prior art.

[0004] The utility model discloses a technical scheme adopted to solve the technical problems is as follows:

[0005] An auxiliary anti-rotation device for bolt fastening includes a support arm and a plurality of clamping jaws. A sliding groove is formed in the length direction of the support arm. Each of the clamping jaws has a clamping seat at one end that matches the sliding groove. The clamping seats of the clamping jaws are sequentially clamped in the sliding groove. The other end of each clamping jaw extends to the same side of the support arm. The clamping slots for clamping the bolt head are formed between the extending ends of adjacent clamping jaws. Each clamping jaw can freely slide along the direction in which the sliding groove is formed to adjust the distance between the clamping jaws. A locking bolt is arranged at the end of each clamping jaw that has a clamping seat. The locking bolt passes through the clamping jaw and can abut against the support arm to lock the position of the clamping jaw.

[0006] Preferably, the end of each clamping jaw that has a clamping seat has a fixing foot that extends to the side of the sliding groove of the support arm. The locking bolt is threadedly connected with the fixing foot. One end of the locking bolt passes through the fixing foot and can abut against the support arm to limit the position of the clamping jaw.

[0007] Preferably, the length of each clamping jaw that extends to the same side of the support arm is a preset length.

[0008] Preferably, the lengths of the clamping jaws that extend to the same side of the support arm are equal.

[0009] Preferably, the end of each said claw extending out of the same side of the support arm is provided with chamfer on both sides.

[0010] Preferably, the side of the support arm away from the claws is provided with a handle.

[0011] From the above technical solution, the auxiliary anti-rotation device for bolt fastening provided by the present application comprises a support arm and a plurality of claws, a sliding groove is formed on the support arm along the length direction thereof, one end of each of the plurality of claws is provided with a clamping seat matched with the sliding groove, the clamping seats of the plurality of claws are sequentially clamped in the sliding groove, the other end of each of the plurality of claws extends out of the same side of the support arm, the adjacent two claws form a clamping groove clamping the bolt head between the extending ends thereof, and each of the plurality of claws can freely slide along the opening direction of the sliding groove to adjust the spacing between the plurality of claws, and the end of each of the plurality of claws provided with the clamping seat is provided with a locking bolt, the locking bolt passes through the claw and can abut against the support arm to lock the position of the claw. The auxiliary anti-rotation device can simultaneously clamp and fix the bolt heads of a plurality of groups of parallel installed bolts through the plurality of claws, when the nut is fastened, the rotation of the bolt along with the nut can be limited, and after the spacing between the plurality of claws is locked, the plurality of claws can be repeatedly used for the same installation specification of bolt, the efficiency of fastening the nut is improved, the bolt installation is more convenient, and the assembly efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a side view structural schematic diagram of the utility model.

[0013] Figure 2 It is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 3 It is another angle three-dimensional structural schematic diagram of the utility model.

[0015] Figure 4 It is a claw structure schematic diagram of the utility model.

[0016] Figure 5 And Figure 6 It is a schematic diagram of clamping the bolt of the utility model.

[0017] In the figure: support arm 10, sliding groove 11, handle 12, claw 20, clamping seat 21, locking bolt 22, fixing foot 23, chamfer 24. DETAILED DESCRIPTION

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, obviously, the drawings in the following description are some embodiments of the utility model, for those skilled in the art, without creative labor, other drawings can also be obtained according to these drawings.

[0019] Please see Figures 1 to 4 The utility model embodiments provide a kind of auxiliary anti-rotation device for bolt fastening, including support arm 10 and several clamping jaw 20, the support arm 10 is along its length direction and is equipped with sliding slot 11, sliding slot 11 is used as dovetail groove or T slot structure, the one end of several clamping jaw 20 is respectively provided with the clamping seat 21 matched with sliding slot 11, the clamping seat 21 of several clamping jaw 20 is sequentially clamped in sliding slot 11, the other end of several clamping jaw 20 is stretched out to the same side of support arm 10, the direction of clamping jaw 20 stretching out is perpendicular to the length direction of support arm 10, and the clamping groove of the bolt head is formed between the end of adjacent two clamping jaw 20 stretching out, and each clamping jaw 20 can be freely slid along the direction of sliding slot 11, to adjust the spacing between each clamping jaw 20, the end of each clamping jaw 20 is provided with locking bolt 22, and the locking bolt 22 is threadedly connected with clamping jaw 20, and one end of locking bolt 22 can pass through clamping jaw 20 and abut on support arm 10, for locking clamping jaw 20 on support arm 10, locking the position of clamping jaw 20, so that adjacent two clamping jaw 20 maintain fixed spacing.

[0020] Please see Figure 5 And Figure 6 The auxiliary anti-rotation device is suitable for assisting the fastening of hexagonal head type bolts and nuts, and when fastening multiple groups of parallel installed bolts and nuts, the fixed positions of each clamping jaw 20 and the spacing of clamping jaw 20 can be adjusted according to the specifications of the bolt heads to be fastened and the bolt installation positions. When adjusting, the locking bolts 22 on the corresponding clamping jaws 20 are manually loosened one by one, the clamping jaws 20 are manually pushed to move along the sliding slots 11, the adjacent two clamping jaws 20 are clamped on both sides of one of the bolt heads to be fastened, forming clamping, after determining the positions of the two clamping jaws 20, the locking bolts 22 on the two clamping jaws 20 are manually tightened to lock the positions, and then the positions of the other adjacent two clamping jaws 20 are moved, and the bolt heads of the parallel installed parts are clamped one by one, and the positions of the clamping jaws 20 are locked. In this way, multiple clamping jaws 20 can simultaneously clamp and fix multiple groups of parallel installed bolt heads, and when fastening nuts, the rotation of the bolts with the nuts can be limited, the efficiency of fastening nuts is improved, the bolt installation is more convenient, and the assembly efficiency is improved.

[0021] The auxiliary anti-rotation device can also be used to clamp and lock the nut during actual use, so that the nut cannot rotate with the bolt.

[0022] Please refer to Figure 2 and Figure 4 Further, in order to facilitate the fixation of the clamping jaw 20, the end portion of the clamping seat 21 provided with each clamping jaw 20 is provided with a fixing foot 23 extending to one side of the sliding groove 11 of the support arm 10, and a threaded hole is opened in the direction of the support arm 10, and the locking bolt 22 is threadedly connected with the threaded hole. By manually rotating the locking bolt 22, one end of the locking bolt 22 can be locked after passing through the threaded hole and abutting against the support arm 10, so as to limit the clamping jaw 20.

[0023] The length of each clamping jaw 20 extending out of the same side of the support arm 10 is a preset length, which can be set according to the specification of the bolt to be clamped.

[0024] The length of each clamping jaw 20 extending out of the same side of the support arm 10 is equal.

[0025] Please refer to Figure 3 The end portion of each clamping jaw 20 extending out of the same side of the support arm 10 is provided with chamfers 24 on both sides, which can guide the end portion of the clamping jaw 20 and facilitate the insertion of the clamping jaw 20 into both sides of the bolt head, so as to facilitate the clamping of the clamping jaw 20 on the bolt head.

[0026] Please refer to Figure 2 or Figure 3 Further, a handle 12 is arranged on the side of the support arm 10 away from the clamping jaw 20, which facilitates manual operation during use.

[0027] The auxiliary anti-rotation device is used for clamping the end of the jaw 20 towards the bolt head of the plurality of parallel installed groups. After manually loosening the locking bolt 22 on the corresponding jaw 20, the jaw 20 is manually pushed along the sliding groove 11 to make the adjacent two jaws 20 clamped on both sides of the bolt head to be fastened, and the position and interval of the two jaws 20 are determined. After the locking bolt 22 on the two jaws 20 is manually screwed, the position is locked, and the position of the other two adjacent jaws 20 is moved, the clamping of the bolt head of the parallel installed groups is formed, and the position of the jaw 20 is locked. After holding the supporting arm 10, the jaw 20 is inserted into the two sides of the bolt head, the plurality of bolt heads are clamped and fixed, the nuts on the clamped bolts are tightened by using the wrench, the position of the auxiliary anti-rotation device is moved, the two sides of the next group of bolt heads are clamped and fixed, and the interval of the jaw 20 on the auxiliary anti-rotation device is adjusted once. The same installation specification bolt can be reused, the efficiency of tightening the nut is improved, the bolt installation is more convenient, and the assembly efficiency is improved.

[0028] The above disclosed is only the preferred embodiment of the utility model, of course, cannot limit the scope of the utility model by this, the person skilled in the art can understand that the whole or part of the above-mentioned embodiment is implemented, and the equivalent change made according to the utility model claim still belongs to the range covered by the utility model.

Claims

1. An anti-unscrewing device for use with a bolt fastening, characterized by: The support arm is provided with a sliding groove along the length direction, and the one end of each of the plurality of clamping claws is provided with a clamping seat matched with the sliding groove, the clamping seats of the plurality of clamping claws are sequentially clamped in the sliding groove, the other end of each of the plurality of clamping claws extends to the same side of the support arm, the adjacent two clamping claws form a clamping groove clamping the bolt head between the extending end portions, each of the clamping claws can freely slide along the opening direction of the sliding groove to adjust the spacing between the clamping claws, and the end portion of each of the clamping claws provided with the clamping seat is provided with a locking bolt which passes through the clamping claw and can abut against the support arm to lock the position of the clamping claw.

2. The anti-unscrewing device for a bolt fastening according to claim 1, characterized in that: The end portion of each of the clamping claws provided with the clamping seat is provided with a fixing foot extending to the side of the sliding groove of the support arm, the locking bolt is threadedly connected with the fixing foot, one end of the locking bolt passes through the fixing foot and can abut against the support arm to limit the position of the clamping claw.

3. The anti-unscrewing device for a bolt fastening according to claim 2, characterized in that: The length of each of the clamping claws extending to the same side of the support arm is a preset length.

4. The anti-unscrewing device for a bolt fastening according to claim 3, characterized in that: The length of each of the clamping claws extending to the same side of the support arm is equal.

5. The anti-unscrewing device for a bolt fastening according to claim 4, characterized in that: The end portion of each of the clamping claws extending to the same side of the support arm is provided with chamfers on both sides.

6. The anti-unscrewing device for a bolt fastening according to claim 1 or 4, characterized in that: The side of the support arm away from the clamping claws is provided with a handle.

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