Forward and reverse rotation automatic reset mechanism

Abstract

The utility model discloses a forward and reverse rotation automatic reset mechanism which comprises a gear box, a gear B, a gear C and a gear E, a gearbox cover is arranged at the bottom of the gearbox, and a gear A is arranged on the surface of the gearbox cover; the gear B is meshed with the surface of the gear A; by means of a limiting mechanism composed of the pulling plate, the positioning column, the spring and the indexing pin, forward and reverse rotation of the lengthened wrench can be conveniently controlled, the rotation direction of the lengthened wrench can be rapidly switched, complex disassembly or adjustment operation is not needed, and work efficiency is greatly improved; by means of the design of the lengthened wrench, the wrench can be conveniently and rapidly connected with nuts and bolts of various specifications through the cooperation of the hexagonal screw opening A in the bottom, the operation requirements of connecting pieces of different sizes are met, and the application range of the mechanism is widened. Meanwhile, through the arrangement of an upper bearing, a lower bearing and a bearing C and the synergistic effect of a fixing block A, a fixing plate B, an anti-shaking arm and other components, the precision and reliability of gear transmission are guaranteed, and the service life of the mechanism is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to nut tightening instrument technical field, specifically is a forward and reverse automatic reset mechanism. BACKGROUND

[0002] The anti-theft net is a metal net for protection. When assembling the anti-theft net, a plurality of metal pull ropes need to be straightened and connected to a frame to form a metal net. The metal pull rope and the frame are fixed by tightening with a nut.

[0003] The conventional nut tightening method is usually manually tightened by manual operation of a wrench. When facing a task that needs to frequently switch the tightening or loosening direction of the nut, the operator has to use additional tools such as a wrench and a screwdriver to first disassemble and adjust the existing device, so as to change the rotation direction. This series of complicated operations not only consumes a lot of time, but also is prone to errors, greatly reduces the work efficiency, and significantly prolongs the overall working time.

[0004] Therefore, we provide a forward and reverse automatic reset mechanism. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a forward and reverse automatic reset mechanism to solve the problems in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a forward and reverse automatic reset mechanism, comprising: a gear box, a gear B, a gear C and a gear E;

[0007] The bottom of the gear box is provided with a gear box cover, and the surface of the gear box cover is provided with a gear A;

[0008] The gear B is engaged with the surface of the gear A, the inner side of the gear B is provided with a gear shaft, and the gear shaft and the gear B are fixedly arranged;

[0009] The gear C is arranged on the surface of the gear box cover, and the gear C can rotate on the surface of the gear box cover. The surface of the gear C is engaged with the gear B, and the surface of the gear B is engaged with the gear D;

[0010] The surface of the gear E is engaged with the gear C and the gear D, the bottom of the gear E is provided with an extended wrench, the extended wrench and the gear E are integrally formed, and the bottom of the extended wrench is provided with a hexagonal screw port A, and the hexagonal screw port A and the extended wrench are integrally formed.

[0011] The surface of the gear box is provided with a limiting mechanism. The limiting mechanism drives the cooperation of the positioning column, the spring and the index pin to control the forward and reverse rotation of the extended wrench.

[0012] Preferably, the limiting mechanism includes a block connected to the surface of the gearbox, an indexing pin slidably connected inside the block, a spring connected to the top of the indexing pin, the spring and the indexing pin being fixedly connected, a concave frame connected to the top of the spring, the spring and the concave frame being fixedly connected, a positioning post connected inside the concave frame, a pull plate connected to the top of the positioning post, the pull plate and the positioning post being fixedly connected, and the indexing pin extending into the interior of the gearbox.

[0013] Preferably, an upper bearing is connected to the upper end of the gear shaft, and a lower bearing is connected to the lower end of the gear shaft. The upper and lower bearings facilitate more stable rotation of the gear shaft.

[0014] Preferably, a connecting rod is connected to the inner side of gear A, and the connecting rod passes through the gearbox, making it easy for an external nut removal machine to connect.

[0015] Preferably, a mounting groove is provided on one side of the surface of the gearbox cover. The mounting groove and the gearbox cover are integrally formed. A fixing block A is connected inside the mounting groove, and the fixing block A is located at the bottom of the gear E. The fixing block A is used to restrict the rotation of the gear E, so that the rotation of the gear E is more stable.

[0016] Preferably, a fixing plate B is connected to the top of the gear E, which is used to restrict the rotation of the gear E and make the rotation of the gear E more stable. The top of the extended wrench is connected to a hexagonal screw B.

[0017] Preferably, the bottom of the gearbox is connected to a top plate, and the bottom of the top plate is connected to an anti-sway arm. The anti-sway arm is fixedly connected to the top plate, and an extension wrench is connected inside the anti-sway arm. The anti-sway arm can prevent the extension wrench from shaking.

[0018] Preferably, the surface of the top plate has a through hole A, and the through hole A and the top plate are integrally formed. The surface of the gearbox cover has a through groove B, and the through groove B and the gearbox cover are integrally formed. The through hole A and the through groove B are aligned.

[0019] Preferably, the bottom of gear C and gear D are connected to bearing C, which makes the rotation of gear C and gear D more convenient.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] (1) The forward and reverse automatic reset mechanism realizes convenient control of the forward and reverse rotation of the extended wrench through the limit mechanism composed of pull plate, positioning column, spring and indexing pin. The operator only needs to operate the pull plate to quickly switch the rotation direction of the extended wrench without complicated disassembly or adjustment operations, which greatly improves work efficiency. Especially in the work scenario where the tightening or loosening direction of nuts needs to be changed frequently, the advantages are obvious. This mechanism reduces the operation steps and tool switching, reduces the labor intensity of the operator, makes the operation process smoother and more efficient, and can effectively shorten the working time and improve production efficiency.

[0022] (2) The design of the extended wrench, combined with the hexagonal screw A at the bottom, enables it to easily and quickly connect nuts and bolts of various specifications, adapt to the operation requirements of connecting parts of different sizes, and broaden the application range of the mechanism. At the same time, the combination of the anti-sway arm and the top plate ensures the stability of the extended wrench during rotation, allowing operators to apply force more easily and accurately, reducing the difficulty of operation and labor intensity.

[0023] (3) Through the setting of the upper bearing, lower bearing, bearing C and the coordinated action of components such as fixed block A, fixed plate B, and anti-sway arm, the entire mechanism provides good structural stability. Under high-frequency forward and reverse operation and large external force, it can effectively reduce the wear and displacement of components, ensure the accuracy and reliability of gear transmission, and extend the service life of the mechanism. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the present invention when connected in three dimensions;

[0026] Figure 3 This is a schematic diagram of the connection structure of gears A, B, C, D and E of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the extended wrench, gear E, and hexagonal screw A of this utility model.

[0028] In the diagram: 1. Connecting rod; 2. Gearbox; 3. Pull plate; 4. Concave frame; 5. Positioning post; 6. Fixing plate B; 7. Block; 8. Gear C; 9. Fixing block A; 10. Gear D; 11. Bearing C; 12. Upper bearing; 13. Gear A; 14. Gear shaft; 15. Lower bearing; 16. Gearbox cover; 17. Anti-sway arm; 18. Extended wrench; 19. Spring; 20. Indexing pin; 21. Gear B; 22. Mounting groove; 23. Top plate; 24. Gear E; 25. Hexagonal screw B; 26. Hexagonal screw A; 27. Through hole A; 28. Through groove B. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-4 The present invention provides a technical solution: a forward and reverse automatic reset mechanism, comprising: a gearbox 2, a gearbox cover 16 at the bottom of the gearbox 2, and a gear A13 on the surface of the gearbox cover 16;

[0031] Gear B21 meshes with the surface of gear A13, and a gear shaft 14 is provided on the inner side of gear B21;

[0032] Gear C8 is disposed on the surface of gearbox cover 16, and the surface of gear C8 meshes with gear B21, and the surface of gear B21 meshes with gear D10;

[0033] Gear E24, the surface of which meshes with gear C8 and gear D10, and the bottom of gear E24 is provided with an extension wrench 18, the bottom of which is provided with a hexagonal thread A26;

[0034] The surface of the gearbox 2 is provided with a limiting mechanism. The pull plate 3 of the limiting mechanism drives the positioning pin 5, the spring 19 and the indexing pin 20 to cooperate in order to control the forward and reverse rotation of the extended wrench 18.

[0035] The limiting mechanism includes a block 7 connected to the surface of the gearbox 2, an indexing pin 20 slidably connected inside the block 7, a spring 19 connected to the top of the indexing pin 20, and the spring 19 and the indexing pin 20 being fixedly connected. A concave frame 4 is connected to the top of the spring 19, and the spring 19 and the concave frame 4 are fixedly connected. A positioning post 5 is connected inside the concave frame 4, a pull plate 3 is connected to the top of the positioning post 5, and the pull plate 3 and the positioning post 5 are fixedly connected. The indexing pin 20 extends into the interior of the gearbox 2.

[0036] The upper end of the gear shaft 14 is connected to an upper bearing 12, and the lower end of the gear shaft 14 is connected to a lower bearing 15. The upper bearing 12 and the lower bearing 15 facilitate more stable rotation of the gear shaft 14.

[0037] The gear A13 is connected to a connecting rod 1 on its inner side, and the connecting rod 1 passes through the gearbox 2. The connecting rod 1 facilitates the connection of the external nut removal machine.

[0038] The gearbox cover 16 has a mounting groove 22 on one side of its surface. The mounting groove 22 and the gearbox cover 16 are integrally formed. A fixing block A9 is connected inside the mounting groove 22 and is located at the bottom of the gear E24. The fixing block A9 is used to limit the rotation of the gear E24 and make the rotation of the gear E24 more stable.

[0039] The top of the gear E24 is connected to a fixing plate B6, which is used to limit the rotation of the gear E24 and make the rotation of the gear E24 more stable. The top of the extended wrench 18 is connected to a hexagonal screw B25.

[0040] The bottom of the gearbox 2 is connected to a top plate 23, and the bottom of the top plate 23 is connected to an anti-sway arm 17. The anti-sway arm 17 is fixedly installed with the top plate 23, and an extension wrench 18 is connected inside the anti-sway arm 17. The anti-sway arm 17 can prevent the extension wrench 18 from shaking.

[0041] The surface of the top plate 23 is provided with a through hole A27, and the through hole A27 and the top plate 23 are integrally formed. The surface of the gearbox cover 16 is provided with a through groove B28, and the through groove B28 and the gearbox cover 16 are integrally formed. The through hole A27 and the through groove B28 are aligned.

[0042] The bottom of gear C8 and gear D10 are connected to bearing C11, which makes the rotation of gear C8 and gear D10 more convenient.

[0043] Specifically, during use, when the operator moves the pull plate 3 with their hand, the pull plate 3 moves the positioning pin 5. The positioning pin 5 further acts on the concave frame 4, causing the spring 19 to be compressed or stretched. At the same time, the indexing pin 20 slides in the block 7 and goes into or out of the gearbox 2. In the initial state, the indexing pin 20 is inserted into a specific position inside the gearbox 2, restricting rotation. When the pull plate 3 is pulled to make the indexing pin 20 disengage from the restricted position, the gear system can rotate freely.

[0044] When the extended wrench 18 needs to be rotated in the forward direction, pull the pull plate 3. The pull plate 3 drives the positioning pin 5 to move upward. The positioning pin 5 causes the concave frame 4 to compress the spring 19. At the same time, the indexing pin 20 slides upward in the block 7 and is released from the restriction on the internal transmission components of the gearbox 2. At this time, the external nut removal machine inputs power through the connecting rod 1, which drives the gear A13 to rotate. The gear A13 meshes with the gear B21 and transmits the power to the gear B21. The gear B21 then meshes with the gear C8 and the gear D10 respectively, thereby driving the gear C8 and the gear D10 to rotate. Finally, the gear E24 rotates under the meshing action with the gear C8 and the gear D10, realizing the forward rotation of the extended wrench 18. The hexagonal screw A26 can then loosen the hexagonal nut.

[0045] When the predetermined position of forward rotation is reached, the pull plate 3 is released, and the spring 19 pushes the concave frame 4 downward due to the elastic restoring force, thereby driving the positioning pin 5 and the indexing pin 20 to reset. The indexing pin 20 is re-inserted into the corresponding limit position inside the gearbox 2, locking the current state and preventing the extended wrench 18 from continuing to rotate forward, thus achieving automatic positioning after forward rotation.

[0046] The reverse rotation process is similar. Pull the pull plate 3 again to release the limit of the indexing pin 20. The power is transmitted in the reverse direction, and the gear meshes in the reverse direction to make the extended wrench 18 rotate in the reverse direction. After reaching the predetermined reverse position, the pull plate 3 is released, and the spring 19 helps the indexing pin 20 to reset and lock, completing the automatic positioning after the reverse rotation.

[0047] The fixing block A9 in the mounting slot 22 provides certain support and position limitation for the gear E24, preventing excessive vertical displacement of the gear E24 during rotation and ensuring its meshing accuracy.

[0048] The fixing plate B6 on the top of gear E24 further enhances the stability of gear E24, ensuring its structural integrity during rotation and under force, maintaining the reliability of the connection with the extended wrench 18, and enabling power to be accurately transmitted from gear E24 to extended wrench 18.

[0049] The anti-sway arm 17 at the bottom of the top plate 23 securely connects the extended wrench 18 to it, preventing the extended wrench 18 from shaking during rotation, ensuring the accuracy and safety of the operation. At the same time, the through hole A27 on the top plate 23 is aligned with the through groove B28 on the gearbox cover 16, providing the necessary space and channel for installation, debugging and movement of power transmission components, ensuring that the layout of the entire mechanism is reasonable and that all components can work in coordination.

[0050] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A forward and reverse automatic reset mechanism, characterized in that, include: Gearbox (2), the bottom of the gearbox (2) is provided with a gearbox cover (16), and the surface of the gearbox cover (16) is provided with a gear A (13). Gear B (21), which meshes with the surface of gear A (13), and a gear shaft (14) is provided on the inner side of gear B (21). Gear C (8), the gear C (8) is disposed on the surface of the gearbox cover (16), the surface of the gear C (8) meshes with gear B (21), and the surface of gear B (21) meshes with gear D (10); Gear E (24), the surface of which meshes with gear C (8) and gear D (10), and an extension wrench (18) is provided at the bottom of gear E (24), and a hexagonal screw A (26) is provided at the bottom of the extension wrench (18). The surface of the gearbox (2) is provided with a limiting mechanism. The pull plate (3) of the limiting mechanism drives the positioning column (5), spring (19) and indexing pin (20) to work together to control the forward and reverse rotation of the extended wrench (18).

2. The automatic reversible reset mechanism according to claim 1, characterized in that: The limiting mechanism includes a block (7) connected to the surface of the gearbox (2), an indexing pin (20) sliding inside the block (7), a spring (19) connected to the top of the indexing pin (20), a concave frame (4) connected to the top of the spring (19), a positioning post (5) connected inside the concave frame (4), a pull plate (3) connected to the top of the positioning post (5), and the indexing pin (20) extending into the interior of the gearbox (2).

3. The automatic reversible reset mechanism according to claim 1, characterized in that: The upper end of the gear shaft (14) is connected to an upper bearing (12), and the lower end of the gear shaft (14) is connected to a lower bearing (15).

4. The automatic reversible reset mechanism according to claim 1, characterized in that: The gear A (13) is connected to a connecting rod (1) on its inner side, and the connecting rod (1) passes through the gearbox (2).

5. The automatic reversing reset mechanism according to claim 1, characterized in that: The gearbox cover (16) has a mounting groove (22) on one side of its surface. A fixing block A (9) is connected inside the mounting groove (22), and the fixing block A (9) is located at the bottom of the gear E (24).

6. The forward and reverse automatic reset mechanism according to claim 5, characterized in that: The top of the gear E (24) is connected to a fixing plate B (6), and the top of the extended wrench (18) is connected to a hexagonal screw B (25).

7. The automatic reversible reset mechanism according to claim 1, characterized in that: The bottom of the gearbox (2) is connected to a top plate (23), the bottom of the top plate (23) is connected to an anti-sway arm (17), and an extension wrench (18) is connected inside the anti-sway arm (17).

8. The forward and reverse automatic reset mechanism according to claim 7, characterized in that: The top plate (23) has a through hole A (27) on its surface, and the gearbox cover (16) has a through groove B (28) on its surface, with the through hole A (27) aligned with the through groove B (28).

9. The forward and reverse automatic reset mechanism according to claim 1, characterized in that: The bottom of gear C (8) and gear D (10) are connected to bearing C (11).

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