Bolt tightening device for narrow space

Abstract

The utility model discloses a bolt tightening device for a narrow space, and relates to the technical field of wrenches. Comprising a first sleeve, a hexagonal sleeve is inserted into the lower surface of the first sleeve, the front side wall and the rear side wall of the hexagonal sleeve are locked and fixed to the front side wall and the rear side wall of the first sleeve through first locking mechanisms, and the left side face and the right side face of the hexagonal sleeve are limited and fixed to the left side wall and the right side wall of the first sleeve through first limiting mechanisms; the front side wall and the rear side wall of the second sleeve are locked and fixed to the first sleeve through second locking mechanisms, a handle mechanism is arranged at the position, close to the upper side, of the side wall of the second sleeve, and a rotating mechanism is fixedly installed on the upper surface of the first sleeve. According to the screwing device, a vertical wrench structure is adopted, an installation bolt in a narrow space can be conveniently, rapidly and effectively screwed, the screwing device can be rapidly rotated through the rotating mechanism, the installation efficiency of the bolt is improved, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of wrenches, in particular to a bolt tightening device for narrow spaces. Background Technique

[0002] With the development of current large-scale industrial buildings, the combination of steel columns and civil engineering foundations in factory building structures is becoming more and more common. Such structures have great strength, large bearing capacity and stiffness, good stability, can meet the complex use requirements of buildings, are economical and beautiful, and are widely applicable to various industrial factory building constructions.

[0003] Although the combination of steel columns and civil engineering foundations in factory building structures has many advantages, since the column feet are located inside the foundation steel cages, there are generally disadvantages such as dense steel bars and difficulty in installing and tightening the column foot bolts during construction, making it difficult to ensure the construction quality.

[0004] During steel structure construction, the steel column fixes the structure to the foundation through column foot bolts, the steel cage and concrete at the same time, and all the structural loads are transmitted to the foundation and the ground through the column feet of the steel column, playing a crucial role in structural safety and service functions.

[0005] In the prior art, during steel structure construction, column foot fixing bolts are generally installed and fixed using ordinary wrenches or socket wrenches. Due to the obstruction of the steel cage, the operating space is narrow, often resulting in the wrench being difficult to reach or the bolt not being able to be normally tightened due to lack of torsional space. Moreover, the small movement space of the wrench leads to a large amount of time being consumed for bolt tightening, resulting in low work efficiency. Content of the Utility Model

[0006] The utility model provides a bolt tightening device for narrow spaces to solve the problems in the background technique.

[0007] To achieve the above object, the utility model provides the following technical solution: A bolt tightening device for narrow spaces, including a first sleeve, a hexagonal socket is inserted on the lower surface of the first sleeve, and the front and rear side walls of the hexagonal socket are locked and fixed to the front and rear side walls of the first sleeve through a first locking mechanism. The left and right side surfaces of the hexagonal socket are limited and fixed to the left and right side walls of the first sleeve through a first limiting mechanism. A second sleeve is inserted on the upper surface of the first sleeve, and the front and rear side walls of the second sleeve are locked and fixed to the first sleeve through a second locking mechanism. The left and right side surfaces of the second sleeve are limited and fixed to the left and right side walls of the first sleeve through a second limiting mechanism. A handle mechanism is arranged at a position close to the upper side of the side wall of the second sleeve, and a rotating mechanism is fixedly installed on the upper surface of the first sleeve.

[0008] Furthermore, the first locking mechanism includes a threaded hole and a locking bolt. Threaded holes are provided on the side walls of both the first sleeve and the hexagonal sleeve, and the locking bolt is threadedly installed in the threaded hole.

[0009] Furthermore, the second locking mechanism is connected to the first locking mechanism in structure, and the threaded holes in the second locking mechanism are uniformly provided on the front and rear side walls of the second sleeve from top to bottom.

[0010] Furthermore, the first limiting mechanism includes a limiting groove and a limiting block. Limiting grooves are provided on the left and right side walls of the first sleeve, and limiting blocks are fixedly installed on the corresponding hexagonal sleeve. The limiting blocks are movably inserted into the limiting grooves. The second limiting mechanism has the same structure as the first limiting mechanism.

[0011] Furthermore, the handle mechanism includes a through hole and a handle. Four through holes are symmetrically provided on the peripheral side walls of the second sleeve, and the handle is movably inserted into the left and right corresponding through holes.

[0012] Furthermore, the rotating mechanism includes a disc, a rotating shaft, a pulling rope, and a clamping block. Two discs are arranged up and down, and are fixedly connected by a rotating shaft between the middle positions of the upper and lower discs. The lower surface of the disc is fixedly connected to the upper surface of the second sleeve. A pulling rope is fixedly installed on the disc and is inserted into the rotating shaft. A clamping block is fixedly installed on the right end of the pulling rope.

[0013] Compared with the prior art, the present utility model provides a bolt tightening device for narrow spaces, having the following beneficial effects:

[0014] 1. For this bolt tightening device for narrow spaces, by arranging the hexagonal sleeve to be installed in the first sleeve and driving the hexagonal sleeve in the first sleeve to rotate through the handle mechanism, a vertical wrench structure is adopted, and the installation bolts in narrow spaces can be tightened more conveniently, quickly, and effectively.

[0015] 2. For this bolt tightening device for narrow spaces, by arranging the rotating mechanism to drive the second sleeve to rotate, and the second sleeve drives the hexagonal sleeve to rotate through the first sleeve, the tightening device can be rotated quickly, so as to improve the installation efficiency of bolts, and it has strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a sectional view of the present utility model;

[0018] Figure 3 is a bottom view of the first sleeve of the present utility model.

[0019] In the figure: 1. First sleeve; 2. Hexagonal sleeve; 3. First locking mechanism; 301. Threaded hole; 302. Locking bolt; 4. First limiting mechanism; 401. Limiting groove; 402. Limiting block; 5. Second sleeve; 6. Second locking mechanism; 7. Second limiting mechanism; 8. Handle mechanism; 801. Through hole; 802. Handle; 9. Rotating mechanism; 901. Disc; 902. Rotating shaft; 903. Pulling rope; 904. Block. Detailed implementation manner

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 - 3 , the present invention discloses a bolt tightening device for narrow spaces, including a first sleeve 1. The lower surface of the first sleeve 1 is inserted with a hexagonal sleeve 2, and the front and rear side walls of the hexagonal sleeve 2 are locked and fixed to the front and rear side walls of the first sleeve 1 through a first locking mechanism 3. The left and right side surfaces of the hexagonal sleeve 2 are limited and fixed to the left and right side walls of the first sleeve 1 through a first limiting mechanism 4. The upper surface of the first sleeve 1 is inserted with a second sleeve 5, and the front and rear side walls of the second sleeve 5 are locked and fixed to the first sleeve 1 through a second locking mechanism 6. The left and right side surfaces of the second sleeve 5 are limited and fixed to the left and right side walls of the first sleeve 1 through a second limiting mechanism 7. A handle mechanism 8 is arranged at a position close to the upper side of the side wall of the second sleeve 5, and a rotating mechanism 9 is fixedly installed on the upper surface of the first sleeve 1.

[0022] Specifically, the first locking mechanism 3 includes a threaded hole 301 and a locking bolt 302. Threaded holes 301 are opened on the side walls of both the first sleeve 1 and the hexagonal sleeve 2, and a locking bolt 302 is threadedly installed in the threaded hole 301.

[0023] In this implementation scheme, the locking bolt 302 is threadedly installed in the threaded hole 301 on the side walls of the first sleeve 1 and the hexagonal sleeve 2, achieving the effect of locking and fixing the first sleeve 1 and the hexagonal sleeve 2, enabling the hexagonal sleeve 2 to be disassembled and assembled, and facilitating the replacement of hexagonal sleeves 2 of different specifications.

[0024] Specifically, the second locking mechanism 6 is structurally connected to the first locking mechanism 3, and threaded holes 301 in the second locking mechanism 6 are evenly opened on the front and rear side walls of the second sleeve 5 from top to bottom.

[0025] In this embodiment, the second locking mechanism 6 can lock and fix the first sleeve 1 and the second sleeve 5. By inserting the locking bolt 302 in the second locking mechanism 6 into the threaded holes 301 on the side walls of the second sleeve 5 at different heights, the effect of adjusting the lengths of the first sleeve 1 and the second sleeve 5 is achieved.

[0026] Specifically, the first limiting mechanism 4 includes a limiting groove 401 and a limiting block 402. Limiting grooves 401 are provided on the left and right side walls of the first sleeve 1, and limiting blocks 402 are fixedly installed on the hexagonal sleeve 2 corresponding to the limiting grooves 401. The limiting blocks 402 are movably inserted into the limiting grooves 401. The second limiting mechanism 7 has the same structure as the first limiting mechanism 4.

[0027] In this embodiment, the limiting block 402 is snapped into the limiting groove 401, so that the hexagonal sleeve 2 will not rotate within the first sleeve 1, achieving the effect of limiting the hexagonal sleeve 2. The second limiting mechanism 7 enables the second sleeve 5 to stably move up and down within the first sleeve 1.

[0028] Specifically, the handle mechanism 8 includes a through hole 801 and a handle 802. Four through holes 801 are symmetrically provided on the peripheral side walls of the second sleeve 5, and handles 802 are movably inserted into the left and right corresponding through holes 801.

[0029] In this embodiment, the handle 802 is inserted into the symmetric through holes 801 on the upper side of the second sleeve 5, so that the handle 802 can drive the second sleeve 5 to rotate.

[0030] Specifically, the rotating mechanism 9 includes a disk 901, a rotating shaft 902, a pulling rope 903, and a clamping block 904. Two disks 901 are arranged up and down, and the middle positions between the upper and lower disks 901 are fixedly connected by a rotating shaft 902. The lower surface of the disk 901 is fixedly connected to the upper surface of the second sleeve 5. A pulling rope 903 is fixedly installed on the disk 901, and the pulling rope 903 is inserted into the rotating shaft 902. A clamping block 904 is fixedly installed at the right end of the pulling rope 903.

[0031] In this embodiment, the clamping block 904 is removed from the upper disk 901, and the clamping block 904 is pulled, so that the clamping block 904 drives the pulling rope 903 to move. The pulling rope 903 drives the rotating shaft 902 to rotate, and the rotating shaft 902 drives the second sleeve 5 to rotate through the lower disk 901.

[0032] During use, according to the specifications of the bolts, rotate the hexagonal socket 2 of the corresponding specification and insert it into the lower surface of the first sleeve 1. Then, thread the locking bolt 302 in the first locking mechanism 3 into the threaded holes 301 on the side walls of the first sleeve 1 and the hexagonal socket 2 to achieve the effect of locking and fixing the first sleeve 1 and the hexagonal socket 2. According to the height of the installation space, move the second sleeve 5 up and down in the first sleeve 1 through the second locking mechanism 6 to achieve the effect of adjusting the height. When the hexagonal socket 2 is sleeved on the nut on the screw rod, the handle 802 in the handle mechanism 8 can be inserted into the symmetric through holes 801 on the upper side of the second sleeve 5, so that the handle 802 can drive the second sleeve 5 to rotate. The second sleeve 5 rotates through the hexagonal socket 2 in the first sleeve 1, and the hexagonal socket 2 tightens the screw. It is also possible to remove the handle 802, gently hold the first sleeve 1 by hand, remove the block 904 from the upper disc 901 in the rotating mechanism 9, pull the block 904, so that the block 904 drives the pull rope 903 to move. The pull rope 903 drives the rotating shaft 902 to rotate. The rotating shaft 902 drives the second sleeve 5 to rotate through the lower disc 901. The second sleeve 5 rotates through the hexagonal socket 2 in the first sleeve 1, and the hexagonal socket 2 tightens the screw. The pull rope 903 can be manually wound around the device 902 repeatedly, achieving a vertical wrench structure, which can conveniently, quickly and effectively tighten the installation bolts in a narrow space, improving the installation efficiency of the bolts and having strong practicability.

[0033] In summary, the bolt tightening device for a narrow space adopts a vertical wrench structure, which can conveniently, quickly and effectively tighten the installation bolts in a narrow space. And through the rotating mechanism 9, the tightening device can be quickly rotated, achieving the improvement of the installation efficiency of the bolts and having strong practicability.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bolt tightening device for use in a narrow space, comprising a first sleeve (1), characterized in that: A hexagonal sleeve (2) is inserted into the lower surface of the first sleeve (1), and the front and rear side walls of the hexagonal sleeve (2) are locked and fixed with the front and rear side walls of the first sleeve (1) through a first locking mechanism (3); the left and right side surfaces of the hexagonal sleeve (2) are locked and fixed with the left and right side walls of the first sleeve (1) through a first limiting mechanism (4); a second sleeve (5) is inserted into the upper surface of the first sleeve (1), and the front and rear side walls of the second sleeve (5) are locked and fixed with the first sleeve (1) through a second locking mechanism (6); the left and right side surfaces of the second sleeve (5) are locked and fixed with the left and right side walls of the first sleeve (1) through a second limiting mechanism (7); a handle mechanism (8) is provided near the upper side of the side wall of the second sleeve (5); and a rotating mechanism (9) is fixedly installed on the upper surface of the first sleeve (1).

2. A bolt tightening device for use in a narrow space according to claim 1, characterized in that: The first locking mechanism (3) comprises a threaded hole (301) and a locking bolt (302); the first sleeve (1) and the side wall of the hexagonal sleeve (2) are both provided with a threaded hole (301); the locking bolt (302) is installed in the threaded inner wall of the threaded hole (301).

3. The bolt tightening device for narrow space according to claim 1, characterized in that: The second locking mechanism (6) is structurally connected to the first locking mechanism (3), and the threaded holes (301) in the second locking mechanism (6) are evenly arranged on the front and rear side walls of the second sleeve (5) from top to bottom.

4. The bolt tightening device for narrow space according to claim 1, characterized in that: The first limiting mechanism (4) comprises a limiting groove (401) and a limiting block (402); the limiting grooves (401) are provided on the left and right side walls of the first sleeve (1); the limiting block (402) is fixedly mounted on the hexagonal sleeve (2) corresponding to the limiting groove (401); the limiting block (402) is movably inserted into the limiting groove (401); and the second limiting mechanism (7) has the same structure as the first limiting mechanism (4).

5. The bolt tightening device for narrow space according to claim 1, characterized in that: The handle mechanism (8) comprises a through hole (801) and a handle (802); four through holes (801) are symmetrically provided on the surrounding side walls of the second sleeve (5), and the handle (802) is movably inserted into the corresponding through holes (801) on the left and right.

6. The bolt tightening device for narrow space according to claim 1, characterized in that: The rotating mechanism (9) comprises a disc (901), a rotating shaft (902), a pull rope (903) and a clamping block (904); two discs (901) are arranged on the upper and lower parts, and the middle parts of the upper and lower discs (901) are fixedly connected via the rotating shaft (902); the lower surface of the disc (901) is fixedly connected to the upper surface of the second sleeve (5); the disc (901) is fixedly mounted with a pull rope (903), and the pull rope (903) is inserted into the rotating shaft (902); and the clamping block (904) is fixedly mounted on the right end of the pull rope (903).

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