Hollow Lithium Battery Wrench

Abstract

This application discloses a hollow lithium-ion battery wrench, relating to the field of hollow wrenches. It includes a housing, with a servo motor fixed to the top of one side of the inner wall of the housing. A worm gear is fixed to the power output end of the servo motor. A rotating sleeve is rotatably connected through the middle of one side of the housing, and a worm wheel is fixed to the middle of the outer wall of the rotating sleeve. This device adjusts the position of the compression blocks by placing a nut fastener over the nut to be disassembled and rotating a knob to drive a miniature threaded rod. This allows multiple compression blocks to fit against the outer wall of the nut to be disassembled, suitable for various nut models. Pressing a remote control switch sends a signal to a control switch, which powers the servo motor via a lithium battery. The control switch controls the forward and reverse rotation of the servo motor, which in turn drives the worm gear to rotate clockwise and counterclockwise, controlling the clockwise and counterclockwise rotation of the worm wheel, thus tightening and loosening the nut. This achieves the effect of being lithium-ion battery driven, compact, and more convenient to use.

Description

Technical Field

[0001] This application relates to the field of hollow wrenches, and in particular to hollow lithium battery wrenches. Background Technology

[0002] A lithium-ion battery wrench is an electric tool used to tighten and loosen bolts and nuts. Powered by a lithium battery, it starts a motor by pressing a button, which drives the output shaft to rotate and thus tighten the bolt. It is commonly used for the initial tightening and final tightening of large hexagonal head high-strength bolts in steel structure bridges, factory buildings, chemical plants, and power generation equipment installation, as well as for the initial tightening of torque-shear type high-strength bolts, and in situations where there are strict requirements for the torque or axial force of bolt fasteners. A hollow wrench is a wrench with a hole in the middle that allows direct rotation of the nut.

[0003] However, existing hollow wrenches are usually connected by a hydraulic device, which drives them. They are relatively large and inconvenient to carry, and they take up a lot of space. They are difficult to use in complex environments such as high-altitude operations. The tail end has a connector for hydraulic connection. When removing nuts, the wrench needs to be limited. However, some operating environments do not have a suitable place to fix it, and the hand-held wrench is not strong enough, resulting in failure to remove nuts. Utility Model Content

[0004] To address the problems of hydraulic devices being large in size, inconvenient to transport, occupying a lot of space, and difficult to use in complex environments such as high-altitude operations, this application provides a hollow lithium battery wrench.

[0005] The hollow lithium battery wrench provided in this application adopts the following technical solution: it includes an outer shell, a servo motor is fixed to the top of one side of the inner wall of the outer shell, a worm gear is fixed to the power output end of the servo motor, a rotating sleeve is rotatably connected through the middle of one side of the outer shell, a worm wheel is fixed to the middle of the outer wall of the rotating sleeve, the worm gear and the worm wheel mesh with each other, a nut fastener is fixed to the middle of the inner wall of the rotating sleeve, a miniature threaded rod is threaded through the outer wall of one end of the nut fastener, a pressing block is rotatably connected to one end of the miniature threaded rod, a knob is fixed to the other end of the pressing block, and a control switch is fixed to one side of the outer wall of the outer shell.

[0006] By adopting the above technical solution, the servo motor rotates, which drives the worm gear to rotate, which in turn drives the worm wheel to rotate, which in turn drives the rotating sleeve to rotate. The position of the extrusion block is adjusted by rotating the knob to drive the micro threaded rod to rotate. The forward and reverse rotation of the servo motor is controlled by the control switch, which in turn drives the worm gear to rotate forward and reverse, thereby controlling the clockwise and counterclockwise rotation of the worm wheel, which in turn drives the tightening and loosening of the nut.

[0007] Preferably, the length of the nut fastener is greater than the length of the rotating sleeve, and the micro threaded rod is disposed at one end of the nut fastener located outside the rotating sleeve. There are six micro threaded rods, and the six micro threaded rods are arranged in a circumferentially equidistant manner.

[0008] By adopting the above technical solution, the position of the extrusion block can be adjusted by rotating the knob to drive the micro threaded rod to rotate, so that multiple extrusion blocks can fit against the outer wall of the nut to be disassembled. This method is applicable to various types of nuts and does not require the installation of many nut connectors during operation.

[0009] Preferably, a threaded connecting sleeve is fixed to the top of one end of the outer shell, a first threaded rod is threadedly connected inside the threaded connecting sleeve, and a handle is threadedly connected to the outer wall of the first threaded rod.

[0010] By adopting the above technical solution, when disassembling or assembling a relatively tight nut, the first threaded rod can be connected to the threaded connecting sleeve, and then the handle can be rotated to its longest length. When in use, one hand holds the handle and provides sufficient reaction force through the lever principle.

[0011] Preferably, a remote control switch is fixed to the outer wall of the grip, the remote control switch is used in conjunction with the control switch, and the outer wall of the remote control switch is provided with a rubber sleeve.

[0012] By adopting the above technical solution, when using the grip, pressing the remote control switch with a finger sends a signal to the control switch, which can conveniently control the forward and reverse rotation of the servo motor.

[0013] Preferably, a lithium battery is detachably installed on one side of the outer wall of the housing, and a second buckle is fixed at both ends of the outer wall of the housing, while a first buckle is fixed at both ends of the lithium battery. The first and second buckles are used in conjunction with each other.

[0014] By adopting the above technical solution, multiple lithium batteries can be carried when working at heights. After the lithium batteries are depleted, new lithium batteries can be quickly replaced to continue working.

[0015] Preferably, the lithium battery is electrically connected to the servo motor via a control switch, and the lithium battery is located at the bottom of the outer casing near the threaded connection sleeve.

[0016] By adopting the above technical solution, the servo motor is powered by a lithium battery and its operation is controlled by a control switch. The lithium battery is located in the grip, reducing the possibility of impact with external objects and preventing the lithium battery from being damaged by impact.

[0017] Preferably, the top and bottom of the outer casing are provided with through holes, the top through hole penetrating the inner wall of the outer casing, and the penetration point is located directly above the top of the worm gear.

[0018] By adopting the above technical solution, lubricating oil can be injected through the top through hole, allowing the lubricating oil to fall onto the top of the worm gear, thus improving the service life of the wrench. The bottom through hole allows the wrench to be suspended when not in use.

[0019] In summary, this application includes at least the following beneficial technical effects:

[0020] 1. This application involves placing a nut fastener over the nut to be disassembled, and rotating a knob to rotate a miniature threaded rod to adjust the position of the compression blocks. This allows multiple compression blocks to fit against the outer wall of the nut to be disassembled, making it suitable for various nut models. Then, pressing a remote control switch sends a signal to a control switch, which powers a lithium battery to a servo motor. The control switch controls the forward and reverse rotation of the servo motor, which in turn drives the worm gear to rotate clockwise and counterclockwise, thereby controlling the clockwise and counterclockwise rotation of the worm wheel and tightening or loosening the nut. This achieves the effect of a small size and convenient use driven by a lithium battery.

[0021] 2. This application connects the first threaded rod to the threaded connecting sleeve, and then rotates the handle to its longest length. When in use, one hand holds the handle and provides sufficient reaction force through the lever principle. When not in use, the handle and the first threaded rod can be removed for easier carrying, thus achieving a detachable wrench. When removing nuts, the long wrench can be held to provide reaction force, while also being easy to carry. Attached Figure Description

[0022] Figure 1 This is a front view schematic diagram of the overall structure of the hollow lithium battery wrench in the embodiments of this application;

[0023] Figure 2 This is a rear view of the overall structure of an embodiment of this application;

[0024] Figure 3 This is a schematic diagram of the internal structure of the outer shell in an embodiment of this application;

[0025] Figure 4 This is a schematic diagram of the structure at the worm gear and worm shaft in an embodiment of this application;

[0026] Reference numerals: 1. Outer shell; 2. Rotating sleeve; 21. Worm gear; 3. Nut fastener; 4. Miniature threaded rod; 5. Extrusion block; 6. Knob; 7. Servo motor; 8. Worm gear; 9. Threaded connecting sleeve; 10. First threaded rod; 11. Handle; 12. Control switch; 13. Remote control switch; 14. Lithium battery; 15. First buckle; 16. Second buckle. Detailed Implementation

[0027] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0028] This application discloses a hollow lithium battery wrench, including a housing 1. A servo motor 7 is fixed to the top of one side of the inner wall of the housing 1. A worm gear 8 is fixed to the power output end of the servo motor 7. A rotating sleeve 2 is rotatably connected through the middle of one side of the housing 1. A worm wheel 21 is fixed to the middle of the outer wall of the rotating sleeve 2. The worm gear 8 and the worm wheel 21 mesh with each other. The rotation of the servo motor 7 drives the worm gear 8 to rotate, which in turn drives the worm wheel 21 to rotate, and thus drives the rotating sleeve 2 to rotate. A nut fastener 3 is fixed to the middle of the inner wall of the rotating sleeve 2. A miniature threaded rod 4 is threaded through the outer wall of one end of the nut fastener 3. A pressing block 5 is rotatably connected to one end of the miniature threaded rod 4. A knob 6 is fixed to the other end of the pressing block 5. Rotating the knob 6 drives the miniature threaded rod 4 to rotate, thereby adjusting the position of the pressing block 5. A control switch 12 is fixed to one side of the outer wall of the housing 1. The control switch 12 controls the forward and reverse rotation of the servo motor 7, which in turn drives the worm gear 8 to rotate forward and reverse, thereby controlling the clockwise and counterclockwise rotation of the worm wheel 21, and thus tightening and loosening the nut.

[0029] Reference Appendix Figure 1 The length of the nut fastener 3 is greater than the length of the rotating sleeve 2. The miniature threaded rod 4 is located at the end of the nut fastener 3 outside the rotating sleeve 2. There are six miniature threaded rods 4, which are arranged in a circumferentially equidistant manner. By rotating the knob 6, the miniature threaded rod 4 is rotated to adjust the position of the extrusion block 5, so that multiple extrusion blocks 5 can fit against the outer wall of the nut to be disassembled. This method is applicable to various types of nuts and does not require the installation of many nut connectors during operation.

[0030] Reference Appendix Figure 1 The outer shell 1 has a threaded connecting sleeve 9 fixed at one end. The threaded connecting sleeve 9 has a first threaded rod 10 threaded inside. The outer wall of the first threaded rod 10 has a handle 11 threaded on it. When assembling or disassembling a tight nut, the first threaded rod 10 can be connected to the threaded connecting sleeve 9, and then the handle 11 can be rotated to its longest position. When in use, one hand holds the handle 11 and provides sufficient reaction force through the lever principle.

[0031] Reference Appendix Figure 2 The handle 11 has a remote control switch 13 fixed on its outer wall. The remote control switch 13 is used in conjunction with the control switch 12. The outer wall of the remote control switch 13 is provided with a rubber sleeve. When using the handle 11, the remote control switch 13 is pressed with a finger to send a signal to the control switch 12, which can conveniently control the forward and reverse rotation of the servo motor 7.

[0032] Reference Appendix Figure 3 and 4The outer wall of the outer shell 1 is detachably fitted with a lithium battery 14. Both ends of the outer wall of the outer shell 1 are fixed with a second buckle 16, and both ends of the lithium battery 14 are fixed with a first buckle 15. The first buckle 15 and the second buckle 16 are used together. When working at height, multiple lithium batteries 14 can be carried. After the lithium battery 14 is depleted, a new lithium battery 14 can be quickly replaced to continue working.

[0033] Reference Appendix Figure 2 The lithium battery 14 is electrically connected to the servo motor 7 via the control switch 12. The lithium battery 14 is located at the bottom of the outer shell 1 near the threaded connecting sleeve 9. The lithium battery 14 supplies power to the servo motor 7 and controls the operation of the servo motor 7 via the control switch 12. The lithium battery 14 is located in the grip 11 to reduce the possibility of collision with external objects and prevent the lithium battery 14 from being damaged by impact.

[0034] Reference Appendix Figure 1 The outer casing 1 has through holes at the top and bottom. The top through hole penetrates the inner wall of the outer casing 1, and the penetration point is located directly above the top of the worm 8. By injecting lubricating oil through the top through hole, the lubricating oil can fall on the top of the worm 8, improving the service life of the wrench. The bottom through hole allows the wrench to be suspended when not in use.

[0035] The implementation principle of the hollow lithium battery wrench in this application embodiment is as follows: When disassembling or assembling a relatively tight nut, firstly connect the first threaded rod 10 to the threaded connecting sleeve 9, then rotate the handle 11 to its longest position. During use, one hand holds the handle 11, and sufficient reaction force is provided through the lever principle. Then, install the lithium battery 14, and fix the lithium battery 14 to the outer shell 1 through the first clip 15 and the second clip 16. When working at height, multiple lithium batteries 14 can be carried. After the lithium battery 14 is depleted, a new lithium battery 14 can be quickly replaced to continue working. Then, the nut fastener 3 is placed on the outside of the nut to be disassembled. By rotating the knob 6, the micro threaded rod 4 is rotated to adjust the position of the pressing block 5, so that multiple pressing blocks 5 can fit against the outer wall of the nut to be disassembled. This method is applicable to various types of nuts. During operation, there is no need to install a large number of nut connectors. Pressing the remote control switch 13 with a finger sends a signal to the control switch 12. The control switch 12 controls the forward and reverse rotation of the servo motor 7, which in turn drives the worm gear 8 to rotate forward and reverse, thereby controlling the clockwise and counterclockwise rotation of the worm wheel 21, which in turn drives the tightening and loosening of the nut.

[0036] 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 hollow lithium battery wrench, comprising a housing (1), characterized in that: A servo motor (7) is fixed to the top of one side of the inner wall of the outer shell (1). A worm gear (8) is fixed to the power output end of the servo motor (7). A rotating sleeve (2) is rotatably connected through the middle of one side of the outer shell (1). A worm wheel (21) is fixed to the middle of the outer wall of the rotating sleeve (2). The worm gear (8) and the worm wheel (21) mesh with each other. A nut fastener (3) is fixed to the middle of the inner wall of the rotating sleeve (2). A miniature threaded rod (4) is threaded through the outer wall of one end of the nut fastener (3). A pressing block (5) is rotatably connected to one end of the miniature threaded rod (4). A knob (6) is fixed to the other end of the pressing block (5). A control switch (12) is fixed to one side of the outer wall of the outer shell (1).

2. The hollow lithium battery wrench according to claim 1, characterized in that: The length of the nut fastener (3) is greater than the length of the rotating sleeve (2). The micro threaded rod (4) is located at one end of the nut fastener (3) outside the rotating sleeve (2). There are six micro threaded rods (4), which are arranged in a circumferentially equidistant manner.

3. The hollow lithium battery wrench according to claim 1, characterized in that: A threaded connecting sleeve (9) is fixed to the top of one end of the outer shell (1). A first threaded rod (10) is threaded inside the threaded connecting sleeve (9), and a handle (11) is threaded on the outer wall of the first threaded rod (10).

4. The hollow lithium battery wrench according to claim 3, characterized in that: The grip (11) has a remote control switch (13) fixed on its outer wall. The remote control switch (13) is used in conjunction with the control switch (12), and the outer wall of the remote control switch (13) is provided with a rubber sleeve.

5. The hollow lithium battery wrench according to claim 1, characterized in that: A lithium battery (14) is detachably installed on one side of the outer wall of the outer casing (1). A second buckle (16) is fixed at both ends of the outer wall of one side of the outer casing (1). A first buckle (15) is fixed at both ends of the lithium battery (14). The first buckle (15) and the second buckle (16) are used together.

6. The hollow lithium battery wrench according to claim 5, characterized in that: The lithium battery (14) is electrically connected to the servo motor (7) via a control switch (12), and the lithium battery (14) is located at the bottom of the outer casing (1) near the threaded connecting sleeve (9).

7. The hollow lithium battery wrench according to claim 3, characterized in that: The outer shell (1) has through holes at the top and bottom. The through hole at the top penetrates the inner wall of the outer shell (1) and the penetration point is located directly above the top of the worm (8).

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