Narrow and small space pipeline installation wrench device with universal joint adjustment function

Abstract

The invention relates to the technical field of wrenches, and discloses a narrow space pipeline installation wrench device with universal joint adjusting.The narrow space pipeline installation wrench device comprises a grip, a first shell is installed in the grip, a first threaded rod is rotationally connected to the interior of the first shell, and a rotating block is fixedly connected to the top end of the first threaded rod; a second shell is slidably connected to the interior of the first shell, a second threaded rod is rotatably connected to the interior of the second shell, a third shell is connected to the exterior of the second threaded rod in a threaded mode, a direction changing assembly is arranged in the third shell, a limiting block is fixedly connected to the bottom end of the first threaded rod, and the direction changing assembly is connected with a sleeve. The rotating block is rotated to drive the first threaded rod to rotate, and then the first threaded rod drives the second threaded rod to rotate, so that the effects that length changes of different pipelines can be rapidly adapted, the time consumed for tool replacement or adjustment is shortened, and bolt mounting or dismounting operation is efficiently completed in the complex and narrow pipeline environment can be achieved.

Description

Technical Field

[0001] This invention relates to the field of wrench technology, specifically to a wrench device for installing pipes in confined spaces with universal joint adjustment. Background Technology

[0002] A wrench is a manual or pneumatic tool used to tighten or loosen threaded fasteners such as bolts and nuts. It achieves the installation and removal of fasteners by transmitting torque and is widely used in mechanical repair, automobile maintenance, building installation, equipment maintenance, and everyday home repairs. There are many types of wrenches, which can be classified according to structure and purpose as open-end wrenches, box wrenches, socket wrenches, adjustable wrenches, and torque wrenches. They are mostly made of high-strength alloy steel, which is heat-treated to enhance hardness and wear resistance, ensuring that they are not easily deformed or broken when subjected to torque. The design of the wrench must match the specifications of the fastener; some special scenarios require specialized wrenches. When using a wrench, it is necessary to select the type and specifications that match the fastener to avoid slippage, damage to the workpiece, or safety hazards. For some heavy-duty operations, a torque extender can be used to increase the torque. With technological advancements, wrenches have also evolved into power-type products such as electric wrenches and hydraulic wrenches, suitable for high-intensity, high-torque industrial scenarios.

[0003] The wrench transmits torque by engaging with the bolt through its fixed or limitedly adjustable jaw structure. However, when faced with pipe systems of varying lengths and complex layouts, its fixed handle length and rigid structure are difficult to adapt to the narrow spaces and winding layouts between pipes. This results in operators having to frequently change to different sizes of tools or even being unable to apply force effectively. This not only reduces the efficiency of bolt installation and removal but may also lead to incomplete operation or safety hazards in situations where space is limited. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a pipe installation wrench device with universal joint adjustment in confined spaces, which solves the problem of reduced efficiency in bolt installation and disassembly caused by the fact that related wrenches transmit torque by engaging with bolts through their fixed or limitedly adjustable jaw structure.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a wrench device for installing pipes in confined spaces with universal joint adjustment, comprising a handle, an outer shell 1 installed inside the handle, a threaded rod 1 rotatably connected inside the outer shell 1, a rotating block fixedly connected to the top end of the threaded rod 1, an outer shell 2 slidably connected inside the outer shell 1, a threaded rod 2 rotatably connected inside the outer shell 2, the outer thread of the threaded rod 1 threadedly connected to the inside of the threaded rod 2, an outer shell 3 threadedly connected to the outer thread of the threaded rod 2, the outer surface of the outer shell 3 slidably connected to the inside of the outer shell 2, a reversing assembly disposed inside the outer shell 3, a limit block fixedly connected to the bottom end of the threaded rod 1, and a sleeve connected to the reversing assembly.

[0006] By adopting the above technical solution, the operator applies torque to the rotating block, driving the threaded rod one to rotate under the support of the outer shell one; this rotational motion is converted into the rotation of the threaded rod two around its own axis and the translation along the axis of the threaded rod one through the meshing of its external thread and the internal thread of the threaded rod two; the movement of the threaded rod two further pushes the outer shell three, causing it to slide along the inner wall of the outer shell two, while driving the entire outer shell two to extend out inside the outer shell one, thereby realizing the length adjustment of the entire rod-shaped structure to adapt to the depth of a specific pipeline; finally, the universal joint-type reversing assembly installed at the end of the outer shell three transmits the torque to the magnetic sleeve at its end, so that the sleeve can lock the bolt head at the bend of the pipeline and complete the tightening operation.

[0007] Preferably, the reversing assembly includes a universal joint, the external thread of which is connected to the inside of the sleeve, a connecting block is rotatably connected to the side wall of the universal joint, and a connecting block is rotatably connected to the side wall of the connecting block, the external thread of which is connected to the inside of the sleeve.

[0008] Preferably, the external rotatable connection of the threaded rod one is rotatably connected to the inside of the outer casing two, and the external rotatable connection of the limiting block is rotatably connected to the inside of the outer casing three.

[0009] Preferably, a torsion spring is provided inside the sleeve, a rotating column is fixedly connected inside the sleeve, and a chuck is rotatably connected to the outside of the rotating column.

[0010] Preferably, the other end of the torsion spring is disposed inside the pawl, and the outside of the pawl is rotatably connected to the inside of the sleeve.

[0011] Preferably, the sleeve has an internal mounting groove, and the external chuck is rotatably connected to the inside of the mounting groove.

[0012] Preferably, a slider is slidably connected inside the sleeve, a return spring is provided inside the sleeve, the other end of the return spring is located inside the slider, a pressing block is fixedly connected to the outside of the slider, the pressing block is slidably connected to the outside of the sleeve, and a limit groove is formed inside the sleeve.

[0013] Preferably, the slider is externally slidably connected to the inside of the limiting groove, and the extrusion block is externally slidably connected to the inside of the limiting groove.

[0014] Preferably, a second return spring is provided inside the sleeve, and a connecting ball is provided at one end of the second return spring. The connecting ball is slidably connected to the inside of the sleeve. A connecting wire is provided inside the sleeve, and a miniature buzzer is electrically connected to the outside of the connecting wire. The miniature buzzer is fixedly connected to the outside of the sleeve.

[0015] Preferably, a second limiting groove is formed inside the sleeve, and the outer side of the connecting ball is slidably connected inside the second limiting groove.

[0016] Working principle: When the construction worker rotates the rotating block at the top of the device, the threaded rod one below it rotates inside the outer shell one. This rotational motion is converted into the rotation and axial movement of the threaded rod two through thread engagement, thereby driving the outer shell two and outer shell three to extend and retract along the axial direction. This telescopic structure allows the wrench to quickly adapt to the depth of different pipes, reducing the time of interruption of work due to tool replacement. As the wrench is pushed into the winding pipe, the universal joint assembly installed inside the housing efficiently transmits the rotational torque from the telescopic rod to the magnetic sleeve at the end, allowing the sleeve to maintain transmission even in irregular curved spaces. The outer layer of the sleeve is made of magnetic material, which can actively attract and pre-position the bolt head, while the claws inside can rotate around the rotating column under the preload of the torsion spring and engage with the edges of the bolt to prevent slippage during operation. When the bolt head is fully inserted into the sleeve and abuts against the internal slider, the slider compresses the return spring and drives the extrusion block to move radially. The extrusion block then pushes the connecting ball, making it contact the circuit contact, thereby connecting the circuit of the miniature buzzer. The sound signal emitted by the buzzer indicates to the operator that the torque can be safely applied, avoiding idling and efficiency loss caused by misalignment.

[0017] This invention provides a pipe installation wrench device with universal joint adjustment for confined spaces. It has the following advantages: 1. This invention drives the first threaded rod to rotate by rotating the rotating block. Then, the first threaded rod drives the second threaded rod to rotate, and the second threaded rod moves along the axis of the first threaded rod. Subsequently, the second outer shell slides under the drive of the second threaded rod, and then the third outer shell slides under the drive of the second threaded rod. At this time, the second and third outer shells extend out from the inside of the first outer shell. The total length of the first, second and third outer shells can be adjusted according to the length of the pipe. The reversing component facilitates the wrench to adjust its direction in narrow and winding pipes. At the same time, the socket can assist in positioning the bolts to be installed, thereby achieving rapid adaptation to different pipe length changes, reducing the time spent on tool replacement or adjustment, and efficiently completing bolt installation or disassembly operations in complex and narrow pipe environments.

[0018] 2. In this invention, the chuck is engaged on the outside of the bolt. Then, the handle is rotated to adjust the chuck to be engaged at the corner of the bolt. During this process, the chuck rotates. Then, the handle is started to drive the sleeve to rotate. Then, the chuck rotates synchronously under the drive of the sleeve. Subsequently, the chuck drives the bolt to rotate, thereby achieving the effect of assisting the wrench in positioning and adapting to the installation of bolts of different specifications.

[0019] 3. In this invention, when the bolt and sleeve are aligned, the root of the bolt presses against the slider, which then slides under the action of the bolt. At the same time, the pressing block moves under the action of the slider, and then the pressing block presses the connecting ball to slide. The connecting ball is then pressed by the pressing block to make contact with the connecting wire. At this time, the miniature buzzer sounds to remind the construction personnel that the sleeve and bolt are aligned, thereby helping the construction personnel to determine whether the wrench is aligned and avoiding slippage and free rotation between the wrench and the bolt. Attached Figure Description

[0020] Figure 1 This is a perspective view of a pipe installation wrench device with universal joint adjustment for confined spaces proposed in this invention. Figure 2 This is a partial structural diagram of the rotating block of a pipe installation wrench device with universal joint adjustment in a confined space proposed in this invention. Figure 3 This is a cross-sectional schematic diagram of the internal structure of the casing of a confined space pipe installation wrench device with universal joint adjustment proposed in this invention. Figure 4 This is a partial structural diagram of the limiting block of a pipe installation wrench device with universal joint adjustment in a confined space proposed in this invention; Figure 5 This is a partial structural diagram of the universal joint of a pipe installation wrench device with universal joint adjustment proposed in this invention. Figure 6 This is a cross-sectional schematic diagram of the internal structure of the sleeve of a confined space pipe installation wrench device with universal joint adjustment proposed in this invention. Figure 7 This is a partial structural diagram of the mounting groove of a pipe installation wrench device with universal joint adjustment in a confined space proposed in this invention. Figure 8 for Figure 7 Enlarged diagram of point A in the middle.

[0021] The components are as follows: 1. Handle; 2. Outer shell one; 3. Outer shell two; 4. Outer shell three; 5. Threaded rod one; 6. Rotating block; 7. Threaded rod two; 8. Reversing assembly; 81. Universal joint one; 82. Connecting block; 83. Universal joint two; 9. Sleeve; 10. Torsion spring; 11. Claw; 12. Mounting groove; 13. Slider; 14. Return spring one; 15. Limiting groove one; 16. Return spring two; 17. Connecting ball; 18. Limiting groove two; 19. Connecting wire; 20. Miniature buzzer; 21. Pressing block; 22. Rotating column; 23. Limiting block. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see the appendix Figure 1 -Appendix Figure 4 This invention provides a wrench device for installing pipes in confined spaces with universal joint adjustment, including a handle 1, a housing 2 installed inside the handle 1, a threaded rod 5 rotatably connected inside the housing 2, a rotating block 6 fixedly connected to the top of the threaded rod 5, a housing 3 slidably connected inside the housing 2, a threaded rod 7 rotatably connected inside the housing 3, the external thread of the threaded rod 5 being threadedly connected to the inside of the threaded rod 7, a housing 4 being threadedly connected to the external thread of the threaded rod 7, the external slidably connected to the inside of the housing 3, a reversing component 8 being provided inside the housing 4, a limit block 23 fixedly connected to the bottom end of the threaded rod 5, and a sleeve 9 connected to the reversing component 8.

[0024] Specifically, firstly, rotating block 6 drives threaded rod 5 to rotate inside housing 2. Then, threaded rod 5 drives threaded rod 7 to rotate, and threaded rod 7 moves along the axis of threaded rod 5. Subsequently, housing 3 slides inside housing 2 under the influence of threaded rod 7. Then, housing 4 slides inside housing 3 under the influence of threaded rod 7. At this point, housings 3 and 4 extend out from inside housing 2. The total length of housings 2, 3, and 4 is adjusted according to the pipe length. Then, housing 2 is installed inside handle 1. Finally, a reversing assembly 8 is installed inside housing 4, and a reversing assembly 8 is installed outside the reversing assembly 8. Install socket 9, at which point the wrench assembly is complete. Insert the wrench into the pipe. The reversing component 8 allows for easy directional adjustment of the wrench in narrow and winding pipes. The outer layer of socket 9 is made of magnetic material, which helps to position the bolts to be installed. Finally, start the handle 1 to rotate outer shell 2, outer shell 3, and outer shell 4. Then, outer shell 4, through the reversing component 8, drives socket 9 to rotate, thereby installing or removing the bolts. This allows for quick adaptation to different pipe lengths, reducing the time spent on tool changes or adjustments, and efficiently completing bolt installation or removal operations in complex and narrow pipe environments.

[0025] See appendix Figure 1 and attached Figure 5The reversing assembly 8 includes a universal joint 81, the external thread of which is connected to the inside of the sleeve 9. A connecting block 82 is rotatably connected to the side wall of the universal joint 81, and the external thread of the connecting block 82 is connected to the inside of the sleeve 9.

[0026] Specifically, since universal joint 81 is installed inside housing 3 4, when housing 3 4 rotates, universal joint 81 rotates synchronously under the drive of housing 3 4. Then, universal joint 81 drives universal joint 2 83 to rotate through connecting block 82, and universal joint 2 83 drives sleeve 9 to rotate.

[0027] See appendix Figure 3 and attached Figure 4 The threaded rod 5 is externally rotatably connected to the inside of the outer casing 3, and the limiting block 23 is externally rotatably connected to the inside of the outer casing 4.

[0028] Specifically, threaded rod 5 is used to drive threaded rod 7 to move, thereby driving outer shell 3 to move synchronously, while limiting block 23 is used to limit the range of movement of threaded rod 7 and prevent threaded rod 7 from falling off.

[0029] See appendix Figure 6 The sleeve 9 has a torsion spring 10 inside, and a rotating column 22 is fixedly connected inside the sleeve 9. A pawl 11 is rotatably connected to the outside of the rotating column 22. The other end of the torsion spring 10 is located inside the pawl 11, and the outside of the pawl 11 is rotatably connected to the inside of the sleeve 9. The sleeve 9 has an installation groove 12 inside, and the outside of the pawl 11 is rotatably connected to the inside of the installation groove 12.

[0030] Specifically, threaded rod 5 drives threaded rod 7 to move, which in turn drives outer shell 3 to move synchronously. Limiting block 23 restricts the movement of threaded rod 7. When sleeve 9 covers the outside of bolt, pawl 11 is locked on the outside of bolt. Then, the handle 1 is rotated to adjust pawl 11 to lock at the corner of bolt. During this process, pawl 11 rotates around rotating column 22, and pawl 11 drives torsion spring 10 to undergo elastic deformation. Then, the handle 1 is started to drive sleeve 9 to rotate. After that, pawl 11 rotates synchronously under the drive of sleeve 9, and then pawl 11 drives bolt to rotate, that is, to install and remove bolt. This can achieve the effect of assisting wrench alignment and adapting to the installation of bolts of different specifications.

[0031] See appendix Figure 7 and attached Figure 8The sleeve 9 has a slider 13 slidably connected inside, and a return spring 14 is provided inside the sleeve 9. The other end of the return spring 14 is located inside the slider 13. A pressing block 21 is fixedly connected to the outside of the slider 13. The outside of the pressing block 21 is slidably connected to the inside of the sleeve 9. A limiting groove 15 is provided inside the sleeve 9. The outside of the slider 13 is slidably connected to the inside of the limiting groove 15. The outside of the pressing block 21 is slidably connected to the inside of the limiting groove 15. A second return spring 16 is provided inside the sleeve 9. A connecting ball 17 is provided at one end of the second return spring 16. The outside of the connecting ball 17 is slidably connected to the inside of the sleeve 9. A connecting wire 19 is provided inside the sleeve 9. A miniature buzzer 20 is electrically connected to the outside of the connecting wire 19. The outside of the miniature buzzer 20 is fixedly connected to the outside of the sleeve 9. A second limiting groove 18 is provided inside the sleeve 9. The outside of the connecting ball 17 is slidably connected to the inside of the second limiting groove 18.

[0032] Specifically, when the bolt is aligned with the sleeve 9, the bolt root presses against the slider 13, causing the slider 13 to slide along the inside of the limiting groove 15 under the action of the bolt. At the same time, the return spring 14 undergoes elastic deformation under the action of the slider 13. Since the slider 13 is fixedly connected to the pressing block 21, the pressing block 21 moves inside the sleeve 9 under the action of the slider 13. Subsequently, the pressing block 21 presses the connecting ball 17 to slide along the inside of the limiting groove 18. At the same time, the return spring 16 undergoes elastic deformation under the action of the connecting ball 17. As a result, the connecting ball 17 is pressed by the pressing block 21 and comes into contact with the connecting wire 19. At this time, the connecting wire 19 is connected to the circuit, and the miniature buzzer 20 is connected to the closed circuit. The miniature buzzer 20 emits a buzzing sound to remind the construction personnel that the sleeve 9 and the bolt are aligned. This can help the construction personnel determine whether the wrench is aligned and avoid slippage and free rotation between the wrench and the bolt.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A confined space pipe installation wrench device with universal joint adjustment, characterized in that, Includes a handle (1), inside which is installed a first outer shell (2), inside which is rotatably connected a first threaded rod (5), at the top of the first threaded rod (5) is fixedly connected a rotating block (6), inside which is a second outer shell (3), inside which is a second threaded rod (7), the outside of the first threaded rod (5) is threadedly connected to the inside of the second threaded rod (7), the outside of the second threaded rod (7) is threadedly connected to a third outer shell (4), the outside of the third outer shell (4) is slidably connected to the inside of the second outer shell (3), inside which is a reversing assembly (8), at the bottom of the first threaded rod (5) is fixedly connected to a limit block (23), and the reversing assembly (8) is connected to a sleeve (9).

2. The confined space pipe installation wrench device with universal joint adjustment according to claim 1, characterized in that, The reversing assembly (8) includes a universal joint (81), the external thread of which is connected to the inside of the sleeve (9), and a connecting block (82) is rotatably connected to the side wall of the universal joint (81). The connecting block (82) is rotatably connected to the side wall of the connecting block (82), and the external thread of which is connected to the inside of the sleeve (9).

3. The confined space pipe installation wrench device with universal joint adjustment according to claim 1, characterized in that, The external rotatable connection of the threaded rod (5) is to the inside of the outer shell (3), and the external rotatable connection of the limiting block (23) is to the inside of the outer shell (4).

4. The confined space pipe installation wrench device with universal joint adjustment according to claim 1, characterized in that, The sleeve (9) is provided with a torsion spring (10) inside, and a rotating column (22) is fixedly connected inside the sleeve (9). A pawl (11) is rotatably connected to the outside of the rotating column (22).

5. A confined space pipe installation wrench device with universal joint adjustment according to claim 4, characterized in that, The other end of the torsion spring (10) is located inside the pawl (11), and the outside of the pawl (11) is rotatably connected to the inside of the sleeve (9).

6. The confined space pipe installation wrench device with universal joint adjustment according to claim 4, characterized in that, The sleeve (9) has an installation groove (12) inside, and the external locating claw (11) is rotatably connected to the inside of the installation groove (12).

7. The confined space pipe installation wrench device with universal joint adjustment according to claim 1, characterized in that, The sleeve (9) is slidably connected to a slider (13), and a return spring (14) is provided inside the sleeve (9). The other end of the return spring (14) is provided inside the slider (13). A pressing block (21) is fixedly connected to the outside of the slider (13). The outside of the pressing block (21) is slidably connected to the inside of the sleeve (9). A limit groove (15) is provided inside the sleeve (9).

8. A confined space pipe installation wrench device with universal joint adjustment according to claim 7, characterized in that, The slider (13) is externally slidably connected to the inside of the limiting groove (15), and the extrusion block (21) is externally slidably connected to the inside of the limiting groove (15).

9. A confined space pipe installation wrench device with universal joint adjustment according to claim 1, characterized in that, The sleeve (9) is provided with a second return spring (16) inside. One end of the second return spring (16) is provided with a connecting ball (17). The outside of the connecting ball (17) is slidably connected to the inside of the sleeve (9). The sleeve (9) is provided with a connecting wire (19). The outside of the connecting wire (19) is electrically connected to a miniature buzzer (20). The outside of the miniature buzzer (20) is fixedly connected to the outside of the sleeve (9).

10. A confined space pipe installation wrench device with universal joint adjustment according to claim 9, characterized in that, The sleeve (9) has a limiting groove (18) inside, and the connecting ball (17) is externally slidably connected to the inside of the limiting groove (18).

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