High pressure bolt fastening device for tight spaces

Abstract

The application relates to a high-pressure bolt fastening device for narrow spaces, and relates to the technical field of bolt fastening devices. The device comprises a support frame, a high-pressure electric wrench movably arranged on the support frame, a sleeve ring arranged on an output shaft of the high-pressure electric wrench, a plurality of clamping blocks movably arranged in the sleeve ring, a synchronizing piece for synchronously driving the plurality of clamping blocks to translate, a control piece for controlling the high-pressure electric wrench, and an adjusting assembly for adjusting the high-pressure electric wrench. The adjusting assembly comprises a movable plate movably arranged on the support frame, a rotating block movably arranged on the movable plate, a lifting piece for driving the movable plate to lift, a rotating piece for driving the rotating block to rotate, and a guide piece for limiting and guiding the movable plate. The application can fasten bolts of different heights, and the positions of the plurality of clamping blocks can be adjusted according to the sizes of the bolts, so that bolts of different sizes can be fastened.

Description

Technical Field

[0001] This application relates to the technical field of bolt fastening devices, and in particular to a high-pressure bolt fastening device for use in confined spaces. Background Technology

[0002] Bolts are made of high-strength steel and are mostly used for connections in bridges, rails, and high-voltage and ultra-high-voltage equipment. High-strength bolts used in ultra-high-voltage equipment require a large amount of prestress to ensure the sealing of the container.

[0003] To ensure the secure connection of bolts to various high-pressure equipment and pipelines, high-pressure bolt tightening devices are typically used to automatically tighten the bolts. These devices are widely used in various high-pressure equipment and pipelines. For example, Chinese patent CN220408567U proposes a visual bolt tightening device. By setting up a connecting pipe and a universal flexible shaft, the length is significantly increased compared to traditional electric wrenches. This allows the device to operate in confined and deep spaces, thus broadening its applicability.

[0004] Regarding the aforementioned technologies, the inventors believe that the following drawbacks exist: In the existing technology, bolts come in various sizes and types. Therefore, different types of bolt fastening devices are required when fastening bolts of different sizes. This means that operators must carry multiple different bolt fastening devices in the same work environment, resulting in poor portability, easy loss of the tools, and chaotic management. Furthermore, switching to the appropriate fastening tool based on the bolt type is necessary during operation, requiring frequent machine stops, tool searches, and replacements, severely disrupting the workflow and significantly shortening effective working time. This not only increases the labor intensity of workers but also affects the efficiency of bolt fastening devices in bolt assembly and disassembly. Utility Model Content

[0005] To address the issue that different bolt fastening devices are needed when fastening bolts of different sizes, requiring operators to carry multiple different devices in the same work environment, which is not only inconvenient but also prone to loss and management chaos, and requires switching to the appropriate fastening tool based on the bolt type, this application provides a high-pressure bolt fastening device for confined spaces.

[0006] This application provides a high-pressure bolt fastening device for confined spaces, employing the following technical solution: A high-pressure bolt fastening device for confined spaces includes a support frame, a high-pressure electric wrench movably mounted on the support frame, a collar mounted on the output shaft of the high-pressure electric wrench, multiple clamping blocks movably mounted within the collar, a synchronizing element for synchronously driving the multiple clamping blocks to translate, a control element for controlling the high-pressure electric wrench, and an adjusting component for adjusting the high-pressure electric wrench. The adjustment assembly includes a movable plate movably mounted on a support frame, a rotating block movably mounted on the movable plate, a lifting component for lifting and lowering the movable plate, a rotating component for rotating the rotating block, and a guide component for limiting and guiding the movable plate.

[0007] By adopting the above technical solutions, the traditional bolt tightening is usually done manually, which is not only inefficient, but also relies on the operator's experience and feeling to control the force applied to the bolt. Due to differences in strength and operating habits among different operators, it is difficult to ensure that the torque is completely consistent every time. Too little torque can easily cause the bolt to loosen, causing serious problems such as vibration, noise, or even parts falling off during use. Too much torque can easily cause the bolt to undergo plastic deformation, or even cause the bolt to break and damage parts. Even when the same operator operates multiple times, it is difficult to ensure that the torque is absolutely stable. When multiple bolts need to be tightened at the same time, it is difficult to ensure that the tightening force on each bolt is uniform and consistent when operating manually. When performing a large number of bolt tightening operations, manual operation is prone to omissions due to negligence. The high-pressure electric wrench can drive the collar to rotate automatically, thereby enabling the high-pressure electric wrench to automatically tighten bolts. The position of multiple clamping blocks inside the collar can be adjusted through the synchronization component, which can be adjusted according to the size of the bolt, so that the high-pressure electric wrench can automatically tighten bolts of different sizes. The height and angle of the high-pressure electric wrench can be adjusted through the adjustment component, which can be adjusted according to the height and angle of the bolt installation position, so as to tighten bolts in different positions and improve the application range of the high-pressure electric wrench.

[0008] Optionally, the synchronizing element includes an internal gear and a plurality of external gears rotatably mounted on the collar, a plurality of transmission racks slidably mounted on the collar, and a motor fixed on the collar. The output shaft of the motor is fixedly connected to one external gear, the plurality of external gears mesh with the internal gear, the plurality of transmission racks mesh with the plurality of external gears respectively, the plurality of transmission racks are fixedly connected to a plurality of clamping blocks respectively, and the plurality of clamping blocks are circumferentially distributed at equal intervals on the inner side of the collar.

[0009] By adopting the above technical solution, the high-voltage electric wrench can tighten bolts of different types through the synchronization component. The motor can drive the corresponding external and internal gears to rotate. When the internal gears rotate, they can drive other external gears to rotate. In turn, when multiple external gears rotate, they can drive multiple transmission racks to translate, and they can drive multiple clamping blocks to translate. Multiple clamping blocks can translate synchronously in the collar, and the position of multiple clamping blocks can be adjusted according to the bolt size.

[0010] Optionally, the lifting component includes a fixed cylinder and a servo motor fixed on the support frame, a threaded block, a worm gear and a worm rotatably disposed in the fixed cylinder, and a threaded rod movably disposed on the fixed cylinder. The worm is fixedly connected to the output shaft of the servo motor, the worm meshes with the worm gear, the worm gear is fixedly connected to the threaded block, the threaded block is threadedly connected to the threaded rod, and the threaded rod is fixedly connected to the movable plate.

[0011] By adopting the above technical solution, the lifting component allows the high-pressure electric wrench to tighten bolts at different heights. The servo motor sequentially drives the worm gear, worm wheel, and thread block to rotate, which in turn drives the thread rod, movable plate, drive motor, rotating block, high-pressure electric wrench, and collar to move up and down. This allows the height of the high-pressure electric wrench to be adjusted according to the height of the bolt.

[0012] Optionally, the rotating component includes a drive motor fixed to the movable plate and a connecting block fixed to the high-voltage electric wrench. The rotating block is fixedly connected to the output shaft of the drive motor. A limit groove is provided on the rotating block. The connecting block is movably engaged with the limit groove. A connecting bolt is threadedly connected to the rotating block. The connecting block is threadedly connected to the connecting bolt.

[0013] By adopting the above technical solution, the high-pressure electric wrench can be used to tighten bolts at different angles through the rotating component. The drive motor can drive the rotating block, the high-pressure electric wrench and the collar to rotate in sequence, thereby adjusting the angle of the high-pressure electric wrench. The high-pressure electric wrench can be adjusted according to the angle at which the bolt is installed.

[0014] Optionally, the control unit includes a control cabinet fixed on a support frame and an air hose connected to a high-voltage electric wrench. The air hose is connected to the control cabinet, which is equipped with a controller and multiple control buttons.

[0015] By adopting the above technical solution, the operator can remotely control the high-voltage electric wrench to tighten bolts through the control unit. The controller and multiple control buttons on the control cabinet can make the high-voltage electric wrench automatically tighten bolts. At the same time, the clamping force of the high-voltage electric wrench can be adjusted according to the size of the bolt to ensure the tightening effect of different bolts.

[0016] Optionally, the guide includes four guide rods fixed to the movable plate and a connecting plate movably mounted on the support frame. The support frame is provided with four sliding holes that are adapted to the diameter of the guide rods, and the four guide rods are slidably connected to the four sliding holes respectively.

[0017] By adopting the above technical solution, the guide component can ensure the stability of the lifting component driving the high-pressure electric wrench to move up and down. When the movable plate moves up and down, it can also drive the four guide rods to move. By setting four guide rods and four guide holes, the smoothness of the movable plate moving up and down can be ensured, and the movable plate can be supported at the same time.

[0018] Optionally, casters are fixedly connected to the four corners of the bottom of the support frame, and brakes are fixedly installed on the outer side of the casters.

[0019] By adopting the above technical solution, and by installing casters on the support frame and control cabinet, the support frame and control cabinet can be moved to designated locations for use. By installing brakes, the casters can be fixed, ensuring the effectiveness of the high-pressure electric wrench in tightening bolts.

[0020] Optionally, the inner side of the collar is provided with a limiting groove, the internal gear is rotatably connected to the limiting groove, and the inner side of the collar is provided with multiple guide grooves, and the multiple transmission racks are slidably connected to the multiple guide grooves respectively.

[0021] By adopting the above technical solution, the internal gear can be supported and limited by the limiting groove, so that the internal gear can rotate stably in the limiting groove. Multiple guide grooves can limit multiple transmission racks respectively, which can ensure the stable translation of multiple transmission racks.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The motor can drive the corresponding external gear to rotate, which in turn drives the internal gear to rotate. When the internal gear rotates, it drives other external gears to rotate. When multiple external gears rotate, they can drive multiple transmission racks to move. When multiple transmission racks move, they can drive multiple clamping blocks to move. The multiple clamping blocks can move synchronously into the collar. The position of multiple clamping blocks can be adjusted according to the size of the bolt to facilitate the tightening of bolts of different sizes. 2. The servo motor can sequentially drive the worm gear, worm wheel, and threaded block to rotate. When the threaded block rotates, it can sequentially drive the threaded rod, movable plate, drive motor, rotating block, high-pressure electric wrench, collar, motor, internal gear, multiple external gears, multiple transmission racks, and multiple clamping blocks to move up and down. This allows the height of the high-pressure electric wrench to be adjusted according to the height of the bolt, so as to tighten bolts of different heights. 3. The drive motor can sequentially drive the rotating block, connecting block, high-pressure electric wrench, collar, motor, internal gear, multiple external gears, multiple transmission racks and multiple clamping blocks to rotate, thereby adjusting the angle of the high-pressure electric wrench. The high-pressure electric wrench can be adjusted according to the installation angle of the bolt to facilitate the tightening of bolts at different angles. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 Cross-sectional view of the support frame connection structure in the embodiments of this application; Figure 3 The appearance diagram of the clamping block connection structure in the embodiment of this application; Figure 4 A cross-sectional view of the collar connection structure in an embodiment of this application.

[0024] Reference numerals: 1. Support frame; 2. Control cabinet; 3. High-pressure electric wrench; 4. Collar; 5. Air pipe; 6. Servo motor; 7. Worm gear; 8. Worm wheel; 9. Threaded block; 10. Threaded rod; 11. Movable plate; 12. Drive motor; 13. Rotating block; 14. Connecting block; 15. Connecting bolt; 16. Electric motor; 17. Internal gear; 18. External gear; 19. Transmission rack; 20. Clamping block; 21. Guide rod; 22. Caster wheel; 23. Brake; 24. Fixed cylinder. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0026] This application discloses a high-pressure bolt fastening device for confined spaces, as described in the embodiments below. Figure 1 and Figure 2It includes a support frame 1, a high-pressure electric wrench 3 movably mounted on the support frame 1, a collar 4 mounted on the output shaft of the high-pressure electric wrench 3, multiple clamping blocks 20 movably mounted within the collar 4, a synchronizing element for synchronously driving the multiple clamping blocks 20 to move synchronously, a control element for controlling the high-pressure electric wrench 3, and an adjusting component for adjusting the high-pressure electric wrench 3; the adjusting component includes a movable plate 11 movably mounted on the support frame 1, a rotating block 13 movably mounted on the movable plate 11, a lifting element for lifting the movable plate 11, a rotating element for rotating the rotating block 13, and a guide element for limiting and guiding the movable plate 11.

[0027] The synchronizing components include an internal gear 17 and multiple external gears 18 rotatably mounted on the collar 4, multiple transmission racks 19 slidably mounted on the collar 4, and a motor 16 fixed to the collar 4. The output shaft of the motor 16 is fixedly connected to one external gear 18. All external gears 18 mesh with the internal gear 17. The multiple transmission racks 19 mesh with the multiple external gears 18 respectively. The multiple transmission racks 19 are fixedly connected to multiple clamping blocks 20 respectively. The multiple clamping blocks 20 are circular on the inner side of the collar 4. The inner side of the collar 4 is provided with a limiting groove, and the internal gear 17 is rotatably connected to the limiting groove. The internal gear 17 is located in the limiting groove. The limiting groove can support and limit the internal gear 17, so that the internal gear 17 can rotate stably in the limiting groove. The inner side of the collar 4 is provided with multiple guide grooves, and multiple transmission racks 19 are slidably connected to multiple guide grooves respectively. The multiple guide grooves can limit the multiple transmission racks 19 respectively, so as to ensure the stable translation of the multiple transmission racks 19.

[0028] It should be added that: the high-pressure electric wrench 3 is connected to the control cabinet 2 through the air pipe 5, and the high-pressure electric wrench 3 is driven by the control cabinet 2. The high-pressure electric wrench 3 is existing technology. The high-pressure electric wrench 3 drives the collar 4 to rotate, thereby automatically tightening or loosening the bolt. The connection method and driving method are existing technology. The specific connection principle and control logic will not be described in detail. The collar 4 is the part on the high-pressure electric wrench that drives the bolt to rotate.

[0029] The lifting component includes a fixed cylinder 24 fixed on the support frame 1, a servo motor 6, a threaded block 9 rotatably disposed inside the fixed cylinder 24, a worm gear 8 and a worm 7, and a threaded rod 10 movably disposed on the fixed cylinder 24. The worm 7 is fixedly connected to the output shaft of the servo motor 6, the worm 7 meshes with the worm gear 8, the worm gear 8 is fixedly connected to the threaded block 9, the threaded block 9 is threadedly connected to the threaded rod 10, a guide hole is provided inside the fixed cylinder 24, the threaded rod 10 is slidably connected to the guide hole, and the threaded rod 10 is fixedly connected to the movable plate 11. The threaded rod 10 can be limited and guided through the guide hole.

[0030] The rotating component includes a drive motor 12 fixed on the movable plate 11 and a connecting block 14 fixed on the high-pressure electric wrench 3. The rotating block 13 is fixedly connected to the output shaft of the drive motor 12. A limit groove is provided on the rotating block 13. The connecting block 14 is movably engaged with the limit groove. A connecting bolt 15 is threadedly connected to the rotating block 13. The connecting block 14 and the connecting bolt 15 are threadedly connected. Through the connecting block 14, the limit groove and the connecting bolt 15, the high-pressure electric wrench 3 and the rotating block 13 can be stably connected together, preventing the high-pressure electric wrench 3 from falling off during use. At the same time, the high-pressure electric wrench 3 can be disassembled, which is convenient for manual use by the operator. For high-pressure bolts that are installed in a relatively low position, the operator can directly and manually install the high-pressure electric wrench 3 on the high-pressure bolt that has been disassembled.

[0031] The control components include a control cabinet 2 fixed on the support frame 1 and an air pipe 5 connected to the high-voltage electric wrench 3. The air pipe 5 is connected to the control cabinet 2. The control cabinet 2 is equipped with a controller and multiple control buttons. The high-voltage electric wrench 3, servo motor 6, drive motor 12 and electric motor 16 are all electrically connected to the control cabinet 2. Thus, the opening and closing of the high-voltage electric wrench 3, servo motor 6, drive motor 12 and electric motor 16 can be controlled through the control cabinet 2.

[0032] The guide component includes four guide rods 21 fixed on the movable plate 11 and a connecting plate movably mounted on the support frame 1. The support frame 1 is provided with four sliding holes that are adapted to the diameter of the guide rods 21. The four guide rods 21 are slidably connected to the four sliding holes respectively. By setting the four guide rods 21 and the four guide holes, the stability of the movable plate 11 moving up and down can be ensured, and the movable plate 11 can be supported at the same time. The four guide rods 21 are all fixedly connected to the connecting plate to support the four guide rods 21 and ensure the stability of the four guide rods 21 rising and falling.

[0033] All four corners of the bottom of the support frame 1 are fixedly connected with casters 22, and brakes 23 are fixedly installed on the outside of the casters 22. By setting casters 22 on the support frame 1, it is convenient for staff to move the support frame 1 and the control cabinet 2. The support frame 1 and the control cabinet 2 can be moved to a designated location for use. By setting brakes 23, the casters 22 can be fixed to prevent the support frame 1 and the control cabinet 2 from moving during use, which can ensure the effect of the high-pressure electric wrench 3 on tightening high-pressure bolts.

[0034] The implementation principle of a high-pressure bolt fastening device for confined spaces according to an embodiment of this application is as follows: (1) When it is necessary to adjust the position of multiple clamping blocks 20, the motor 16 can drive the corresponding external gear 18 to rotate, which in turn drives the internal gear 17 to rotate. When the internal gear 17 rotates, it can drive other external gears 18 to rotate. When multiple external gears 18 rotate, they can drive multiple transmission racks 19 to translate. When multiple transmission racks 19 translate, they can drive multiple clamping blocks 20 to translate. This allows multiple clamping blocks 20 to translate synchronously into the collar 4. The position of multiple clamping blocks 20 can be adjusted according to the size of the high-pressure bolts so as to tighten high-pressure bolts of different sizes. (2) When the height of the high-pressure electric wrench 3 needs to be adjusted, the servo motor 6 can drive the worm 7, worm wheel 8 and thread block 9 to rotate in sequence. When the thread block 9 rotates, it can drive the thread rod 10, movable plate 11, drive motor 12, rotating block 13, high-pressure electric wrench 3, collar 4, motor 16, internal gear 17, multiple external gears 18, multiple transmission racks 19 and multiple clamping blocks 20 to move up and down in sequence, thereby adjusting the height of the high-pressure electric wrench 3. The high-pressure electric wrench 3 can be adjusted according to the height of the high-pressure bolt to facilitate the tightening of high-pressure bolts of different heights. (3) When it is necessary to adjust the angle of the high-pressure electric wrench 3, the drive motor 12 can sequentially drive the rotating block 13, the connecting block 14, the high-pressure electric wrench 3, the collar 4, the motor 16, the internal gear 17, multiple external gears 18, multiple transmission racks 19 and multiple clamping blocks 20 to rotate, thereby adjusting the angle of the high-pressure electric wrench 3. The high-pressure electric wrench 3 can be adjusted according to the angle at which the high-pressure bolt is installed, so as to tighten the high-pressure bolts at different angles. (4) When it is necessary to tighten the high-pressure bolt, the height and angle of the high-pressure bolt can be adjusted by the high-pressure electric wrench 3, and then the collar 4 in the high-pressure electric wrench 3 can be put on the high-pressure bolt. According to the size of the high-pressure bolt, the position of multiple clamping blocks 20 can be adjusted so that multiple clamping blocks 20 are close to the high-pressure bolt and tightened. Then the high-pressure electric wrench 3 can drive the collar 4 to automatically tighten or loosen the high-pressure bolt. Through the controller and multiple control buttons on the control cabinet 2, the high-pressure electric wrench 3 can automatically tighten the high-pressure bolt. At the same time, the clamping force of the high-pressure electric wrench 3 can be adjusted according to the size of the high-pressure bolt to ensure the tightening effect of different high-pressure bolts. (5) Compared with the prior art, the overall structure is simple and easy to use. The bolt fastening device can fasten bolts of different sizes and types. It is easy for staff to carry. When fastening bolts of different sizes, it is not necessary to use different bolt fastening devices. Operators do not need to carry multiple bolt fastening devices. When using it, it is not necessary to switch the corresponding fastening tool according to the bolt type. During the operation, it is not necessary to frequently stop the machine, search for and change tools. It can improve the workflow, reduce the labor intensity of the staff, and ensure the efficiency of bolt fastening device for bolt assembly and disassembly. It is not necessary to use manual bolt fastening. It is not necessary to rely on the experience and feeling of the operator to control the force applied to the bolt. It can ensure that the torque is completely consistent every time it is tightened, avoiding the phenomenon of bolt loosening and parts falling off due to insufficient torque, and also avoiding the phenomenon of bolt plastic deformation due to excessive torque, ensuring the absolute stability of torque.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-pressure bolt fastening device for confined spaces, characterized in that: It includes a support frame (1), a high-voltage electric wrench (3) movably mounted on the support frame (1), a collar (4) mounted on the output shaft of the high-voltage electric wrench (3), multiple clamping blocks (20) movably mounted in the collar (4), a synchronizing element for synchronously driving the multiple clamping blocks (20) to move synchronously, a control element for controlling the high-voltage electric wrench (3), and an adjusting component for adjusting the high-voltage electric wrench (3); The adjustment assembly includes a movable plate (11) movably mounted on the support frame (1), a rotating block (13) movably mounted on the movable plate (11), a lifting member for lifting the movable plate (11), a rotating member for rotating the rotating block (13), and a guide member for limiting and guiding the movable plate (11).

2. The high-pressure bolt fastening device for confined spaces according to claim 1, characterized in that: The synchronizing element includes an internal gear (17) and multiple external gears (18) rotatably mounted on the collar (4), multiple transmission racks (19) slidably mounted on the collar (4), and a motor (16) fixed on the collar (4). The output shaft of the motor (16) is fixedly connected to one external gear (18). The multiple external gears (18) mesh with the internal gear (17). The multiple transmission racks (19) mesh with the multiple external gears (18) respectively. The multiple transmission racks (19) are fixedly connected to multiple clamping blocks (20) respectively. The multiple clamping blocks (20) are distributed equidistantly on the inner side of the collar (4).

3. The high-pressure bolt fastening device for confined spaces according to claim 1, characterized in that: The lifting component includes a fixed cylinder (24) and a servo motor (6) fixed on the support frame (1), a threaded block (9), a worm wheel (8) and a worm (7) rotatably disposed in the fixed cylinder (24), and a threaded rod (10) movably disposed on the fixed cylinder (24). The worm (7) is fixedly connected to the output shaft of the servo motor (6), the worm (7) meshes with the worm wheel (8), the worm wheel (8) is fixedly connected to the threaded block (9), the threaded block (9) is threadedly connected to the threaded rod (10), and the threaded rod (10) is fixedly connected to the movable plate (11).

4. The high-pressure bolt fastening device for confined spaces according to claim 1, characterized in that: The rotating component includes a drive motor (12) fixed on the movable plate (11) and a connecting block (14) fixed on the high-pressure electric wrench (3). The rotating block (13) is fixedly connected to the output shaft of the drive motor (12). A limit groove is provided on the rotating block (13). The connecting block (14) is movably engaged with the limit groove. A connecting bolt (15) is threadedly connected to the rotating block (13). The connecting block (14) is threadedly connected to the connecting bolt (15).

5. The high-pressure bolt fastening device for confined spaces according to claim 1, characterized in that: The control unit includes a control cabinet (2) fixed on a support frame (1) and an air pipe (5) connected to a high-pressure electric wrench (3). The air pipe (5) is connected to the control cabinet (2), and the control cabinet (2) is equipped with a controller and multiple control buttons.

6. The high-pressure bolt fastening device for confined spaces according to claim 1, characterized in that: The guide includes four guide rods (21) fixed on the movable plate (11) and a connecting plate movably set on the support frame (1). The support frame (1) is provided with four sliding holes that are adapted to the diameter of the guide rods (21). The four guide rods (21) are slidably connected to the four sliding holes respectively.

7. The high-pressure bolt fastening device for confined spaces according to claim 1, characterized in that: The four corners of the bottom of the support frame (1) are fixedly connected with casters (22), and brakes (23) are fixedly installed on the outer side of the casters (22).

8. A high-pressure bolt fastening device for confined spaces according to claim 2, characterized in that: The inner side of the collar (4) is provided with a limiting groove, the internal gear (17) is rotatably connected to the limiting groove, the inner side of the collar (4) is provided with multiple guide grooves, and the multiple transmission racks (19) are slidably connected to the multiple guide grooves respectively.

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