Tightening device for bolt

Abstract

The utility model relates to the field of disassembly and assembly tools, and discloses a bolt tightening device which comprises a handle, the right end of the handle is rotationally connected with a handrail, an adjusting assembly is installed in the middle of the handle, a replacing assembly is installed at the left end of the handle and comprises a fixing ring, and the inner side of the fixing ring is fixedly connected to the left end of the handle. A rotating ring is rotatably connected to the exterior of the fixing ring, four ropes are fixedly connected to the inner wall of the rotating ring, the ropes are sleeved with first springs, baffles are fixedly connected to the inner sides of the first springs, fixing bolts are fixedly connected to the inner sides of the baffles, sleeves are clamped among the exteriors of the four fixing bolts, and the adjusting assembly comprises a shell. According to the sleeve fixing device, the rotating ring is rotated to drive the rope to pull the baffle to compress the first spring, so that the fixing bolt is retracted into the fixing ring, the sleeve is firmly fixed, meanwhile, the sleeve fixing device is convenient to disassemble, assemble and replace different types of sleeves, time and labor are saved, and operation is easy.

Description

Technical Field

[0001] The utility model relates to the field of disassembly and assembly tools, in particular to a bolt tightening device. Background Art

[0002] Bolt tightening devices are important tools for ensuring the reliability of bolted connections and are widely used in machinery, construction, aviation and other fields. By providing accurate torque and controlling the tightening process, this device ensures that the bolts reach the predetermined tightening force during assembly, thereby avoiding structural failure caused by overtightening or loosening. Modern bolt tightening devices are usually equipped with digital torque control systems that can monitor and record tightening data in real time, improving the accuracy and safety of operations.

[0003] According to usage requirements, bolt tightening devices can be divided into manual, pneumatic and electric types. Users can choose appropriate equipment according to the working environment and load requirements. Reasonable use of bolt tightening devices can not only improve product quality, but also extend the service life of the equipment and reduce maintenance costs. With the development of intelligent manufacturing, intelligent bolt tightening devices have gradually emerged, with automation, remote monitoring and data analysis functions, providing new solutions for Industry 4.0 and promoting the transformation and upgrading of the manufacturing industry.

[0004] In daily life, a common bolt tightening device is a socket wrench, which is used to tighten or loosen bolts and nuts. It consists of a handle and a series of replaceable sockets. The socket part can accurately embed into bolts or nuts of different specifications to provide efficient torque transmission. However, in traditional socket wrenches, the connection between the socket and the handle is through a magnetic connection, which cannot be completely fixed. When holding it, the socket will detach from the handle with a slightly larger movement, affecting normal use. Therefore, a bolt tightening device is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a bolt tightening device, which aims to improve the problem that the traditional connection method between the sleeve and the handle is through magnetic connection, which cannot be completely fixed. When holding the hand, the sleeve will detach from the handle with a slightly larger movement, affecting normal use.

[0006] In order to achieve the above object, the utility model adopts the following technical solution: a bolt tightening device, comprising a handle, the right end of the handle is rotatably connected to an armrest, the middle part of the handle is equipped with an adjustment component, and the left end of the handle is equipped with a replacement component;

[0007] The replacement assembly includes a fixing ring, the inner side of the fixing ring is fixedly connected to the left end of the handle, the outer side of the fixing ring is rotatably connected to a swivel, the inner wall of the swivel is fixedly connected to four ropes, the outer side of the rope is provided with a spring 1, the inner side of the spring 1 is fixedly connected to a baffle, the inner side of the baffle is fixedly connected to a fixing bolt, and a sleeve is clamped between the outer sides of the four fixing bolts.

[0008] As a further description of the above technical solution:

[0009] The adjustment assembly includes a shell, the interior of the shell is fixedly connected to the middle of the handle, the interior of the shell is slidably connected to a rotating rod, the right side of the rotating rod is fixedly connected to a limiting tooth, the left side of the rotating rod is provided with a sliding groove, the interior of the shell is fixedly connected to a spring 2, the top of the spring 2 is fixedly connected to a button, the bottom right side of the button is fixedly connected to a clamping plate, and the inner wall of the shell is fixedly connected to a retaining ring.

[0010] As a further description of the above technical solution:

[0011] The outer side of the rope is slidably connected to the inner side of the fixing ring, and the inner side of the rope is fixedly connected to the outer side of the baffle.

[0012] As a further description of the above technical solution:

[0013] The outer side of the spring is fixedly connected to the inside of the fixing ring, and the outer side of the baffle is slidably connected to the inside of the fixing ring.

[0014] As a further description of the above technical solution:

[0015] The exterior of the fixing bolt is slidably connected to the interior of the fixing ring, and the interior of the sleeve is slidably connected to the left end of the handle.

[0016] As a further description of the above technical solution:

[0017] The outside of the button is slidably connected to the inner wall of the shell, and the bottom of the button abuts against the top of the retaining ring.

[0018] As a further description of the above technical solution:

[0019] The outside of the clamping plate is slidably connected to the inside of the shell, and the clamping plate is engaged with the limiting teeth.

[0020] As a further description of the above technical solution:

[0021] The outer portion of the limiting tooth is slidably connected to the inner portion of the shell.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, by rotating the swivel, the rope is driven to pull the baffle to compress the spring 1, so that the fixing bolt is retracted into the fixing ring, thereby firmly fixing the sleeve. At the same time, it is convenient to disassemble and replace sleeves of different models, saving time and effort and simple operation.

[0024] 2. In the present invention, by pressing the button to compress the second spring, the retaining ring is limited, which drives the card plate to move so that the groove on the card plate is aligned with the limiting tooth, thereby realizing the arbitrary change of the turning rod torque and more labor-saving use of the device to disassemble and assemble the bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional schematic diagram of a bolt tightening device proposed by the utility model;

[0026] Figure 2 This is a structural schematic diagram of a fixing bolt of a bolt tightening device proposed by the present invention;

[0027] Figure 3 The present invention is a structural schematic diagram of a clamping plate of a bolt tightening device proposed by the present invention.

[0028] Legend:

[0029] 1. Handle; 2. Handrail; 3. Sleeve; 4. Fixed ring; 5. Swivel; 6. Rope; 7. Spring 1; 8. Baffle; 9. Fixed bolt; 10. Housing; 11. Rotating rod; 12. Limiting tooth; 13. Slide; 14. Spring 2; 15. Button; 16. Clamp; 17. Baffle. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Reference Figure 1 - Figure 3 The utility model provides an embodiment: a bolt tightening device, comprising a handle 1, the right end of the handle 1 is rotatably connected to an armrest 2, the handle 1 is used to connect a sleeve 3, the armrest 2 is for facilitating the rotation of the handle 1, an adjustment component is installed in the middle of the handle 1, and a replacement component is installed at the left end of the handle 1;

[0032] The replacement component includes a fixing ring 4, the inner side of which is fixedly connected to the left end of the handle 1, and a swivel 5 is rotatably connected to the outside of the fixing ring 4. Four ropes 6 are fixedly connected to the inner wall of the swivel 5. A spring 7 is provided on the outside of the rope 6, and a baffle 8 is fixedly connected to the inside of the spring 7. A fixing bolt 9 is fixedly connected to the inside of the baffle 8. A sleeve 3 is clamped between the outsides of the four fixing bolts 9. The fixing ring 4 is used to connect and limit other parts. The swivel 5 wraps the fixing ring 4 inside and is connected to the rope 6 for easy manual rotation. The rope 6 is used to pull the baffle 8 to move. The spring 7 is used to allow the baffle 8 to automatically reset. The fixing bolt 9 can only move in the specified direction under the limit of the fixing ring 4 and will not If it is moved or shaken randomly, a baffle 8 is fixed on the outside to prevent the fixing bolt 9 from falling off due to exceeding the moving range. The sleeve 3 is used to disassemble and assemble the bolts. The corresponding sleeve 3 is replaced according to the different types of bolts. The outside of the rope 6 is slidably connected to the inside of the fixing ring 4, and the inside of the rope 6 is fixedly connected to the outside of the baffle 8, so that the rope 6 can pull the baffle 8 to move. The outside of the spring 7 is fixedly connected to the inside of the fixing ring 4 to keep the spring 7 stable. The outside of the baffle 8 is slidably connected to the inside of the fixing ring 4, and the outside of the fixing bolt 9 is slidably connected to the inside of the fixing ring 4. The fixing ring 4 limits the moving direction and distance of the baffle 8 and the fixing bolt 9. The inside of the sleeve 3 is slidably connected to the left end of the handle 1 for easy replacement.

[0033] Reference Figure 1 - Figure 3 The adjustment component includes a shell 10, which is fixedly connected to the middle of the handle 1 inside the shell 10, and a rotating rod 11 is slidably connected inside the shell 10. The right side of the rotating rod 11 is fixedly connected to the limiting tooth 12, and a slide groove 13 is provided on the left side of the rotating rod 11. A spring 2 14 is fixedly connected to the inside of the shell 10, and a button 15 is fixedly connected to the top of the spring 2 14. A card plate 16 is fixedly connected to the right side of the bottom of the button 15. A retaining ring 17 is fixedly connected to the inner wall of the shell 10. The shell 10 is used to connect and protect internal parts. The rotating rod 11 is used to drive the handle 1 to rotate, and the limiting tooth 12 is used to adjust the length of the rotating rod 11 for convenient fixation. The slide groove 13 is used to limit the moving direction of the rotating rod 11 to ensure that the rotating rod 11 can move back and forth without moving around. Shake, spring 2 14 is used to drive button 15 to reset, button 15 is used to drive card plate 16 to move downward, card plate 16 is used to cooperate with limit tooth 12 to achieve fixation, retaining ring 17 is used to limit the moving distance of button 15, so that the groove on card plate 16 can align with limit tooth 12, button 15 is externally slidably connected to the inner wall of shell 10, button 15 bottom and retaining ring 17 top are abutted, shell 10 and retaining ring 17 limit the moving direction and distance of button 15, card plate 16 is externally slidably connected to the inside of shell 10, limiting the moving direction of card plate 16, card plate 16 and limit tooth 12 are engaged to achieve fixation, limit tooth 12 is externally slidably connected to the inside of shell 10, limiting the moving direction of limit tooth 12.

[0034] Working principle: When using this device to disassemble and assemble bolts, first replace the model of sleeve 3 according to the model of the bolt, and by rotating the swivel 5, drive the rope 6 to pull the baffle 8 to compress the spring 1 7, and drive the fixing bolt 9 to retract into the fixing ring 4 to achieve unlocking. Then pull out the sleeve 3 and insert the sleeve 3 of the corresponding model. At this time, release the swivel 5. Under the limit of the fixing ring 4, the spring 1 7 pushes the baffle 8, pushes out the fixing bolt 9 and inserts it into the sleeve 3 to achieve fixation. Then hold the handrail 2, insert the sleeve 3 into the bolt, and bend the rotating rod 11. When When the bolt cannot be turned, it is necessary to extend the turning rod 11 and increase the torque. By pressing the button 15, the spring 2 14 is compressed. Under the limit of the retaining ring 17, the card plate 16 is driven to move downward so that the groove is aligned with the limit tooth 12. Then, under the limit of the slide groove 13, the turning rod 11 is pulled. When it is pulled to the appropriate position, release the button 15. The spring 2 14 will immediately push the button 15, drive the card plate 16 to reset, and re-enter the limit tooth 12 to achieve adjustment. At this time, the bolt can be turned by bending the turning rod 11, making the disassembly and assembly of the bolt more labor-saving.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bolt tightening device, comprising a handle (1), characterized in that: The right end of the handle (1) is rotatably connected to the armrest (2), the middle of the handle (1) is equipped with an adjustment component, and the left end of the handle (1) is equipped with a replacement component; The replacement assembly comprises a fixing ring (4), the inner side of the fixing ring (4) is fixedly connected to the left end of the handle (1), the outer side of the fixing ring (4) is rotatably connected to a swivel (5), the inner wall of the swivel (5) is fixedly connected to four ropes (6), the outer side of the rope (6) is provided with a spring (7), the inner side of the spring (7) is fixedly connected to a baffle (8), the inner side of the baffle (8) is fixedly connected to a fixing bolt (9), and the outer sides of the four fixing bolts (9) are clamped with sleeves (3).

2. A bolt tightening device according to claim 1, characterized in that: The adjustment assembly comprises a shell (10), the inside of the shell (10) is fixedly connected to the middle of the handle (1), the inside of the shell (10) is slidably connected to a rotating rod (11), the right side of the rotating rod (11) is fixedly connected to a limiting tooth (12), the left side of the rotating rod (11) is provided with a sliding groove (13), the inside of the shell (10) is fixedly connected to a second spring (14), the top of the second spring (14) is fixedly connected to a button (15), the right side of the bottom of the button (15) is fixedly connected to a clamping plate (16), and the inner wall of the shell (10) is fixedly connected to a retaining ring (17).

3. A bolt tightening device according to claim 1, characterized in that: The outside of the rope (6) is slidably connected to the inside of the fixing ring (4), and the inside of the rope (6) is fixedly connected to the outside of the baffle (8).

4. A bolt tightening device according to claim 1, characterized in that: The outer side of the spring 1 (7) is fixedly connected to the inside of the fixing ring (4), and the outer side of the baffle (8) is slidably connected to the inside of the fixing ring (4).

5. The bolt tightening device according to claim 1, characterized in that: The exterior of the fixing bolt (9) is slidably connected to the interior of the fixing ring (4), and the interior of the sleeve (3) is slidably connected to the left end of the handle (1).

6. A bolt tightening device according to claim 2, characterized in that: The button (15) is externally slidably connected to the inner wall of the housing (10), and the bottom of the button (15) abuts against the top of the retaining ring (17).

7. A bolt tightening device according to claim 2, characterized in that: The outside of the clamping plate (16) is slidably connected to the inside of the housing (10), and the clamping plate (16) and the limiting teeth (12) are engaged with each other.

8. The bolt tightening device according to claim 2, characterized in that: The outside of the limiting tooth (12) is slidably connected to the inside of the housing (10).

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