Forward and reverse rotation automatic reset mechanism

Abstract

The invention 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; through a limiting mechanism composed of the pulling plate, the positioning column, the spring and the indexing pin, convenient control over forward rotation and reverse rotation of the lengthened wrench is achieved, the rotating direction of the lengthened wrench can be rapidly switched, complex disassembling or adjusting operation is not needed, and the working 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 invention relates to the technical field of nut tightening equipment, in particular to a forward and reverse automatic resetting mechanism. Background Art

[0002] The anti-theft net is a metal net that plays a protective role. When assembling the anti-theft net, multiple metal ropes need to be straightened and connected to the frame to form a metal net, and nuts are used to tighten and fix the metal ropes and the frame.

[0003] The traditional way to tighten nuts is usually to tighten them manually with a wrench. As a result, when faced with tasks that require frequent switching of the tightening or loosening direction of the nuts, operators have to use additional tools, such as wrenches, screwdrivers, etc., to perform complex disassembly and adjustments on the existing devices before changing the rotation direction. This series of tedious operations not only consumes a lot of time, but is also prone to errors, greatly reducing work efficiency and significantly extending the overall working time.

[0004] To this end, we have introduced a forward and reverse automatic reset mechanism. Summary of the invention

[0005] The object of the present invention is to provide a forward and reverse automatic reset mechanism to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a forward and reverse automatic reset mechanism, comprising: a gear box, a gear B, a gear C and a gear E;

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

[0008] The gear B is meshed with the surface of the gear A, and a gear shaft is arranged inside the gear B, 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 meshed with the gear B, and the surface of the gear B is meshed with the gear D.

[0010] The surface of the gear E is meshed with the gear C and the gear D. An extended wrench is provided at the bottom of the gear E. The extended wrench and the gear E are integrally formed. A hexagonal screw hole A is provided at the bottom of the extended wrench. The hexagonal screw hole A and the extended wrench are integrally formed.

[0011] A limiting mechanism is arranged on the surface of the gear box, and the pull plate of the limiting mechanism drives the coordinated use of the positioning column, the spring and the indexing 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 gear box, the indexing pin is slidably connected to the inside of the block, the spring is connected to the top of the indexing pin, the spring and the indexing pin are fixedly arranged, the top of the spring is connected to a concave frame, the spring and the concave frame are fixedly arranged, the positioning column is connected to the inside of the concave frame, the pull plate is connected to the top of the positioning column, the pull plate and the positioning column are fixedly arranged, and the indexing pin extends to the inside of the gear box.

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

[0014] Preferably, a connecting rod is connected to the inner side of the gear A, and the connecting rod runs through the gear box, so that the connecting rod facilitates connection with an external nut remover.

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

[0016] Preferably, a fixing plate B is connected to the top of the gear E, and the fixing plate B is used to limit the rotation of the gear E, so that the rotation of the gear E is more stable, and a hexagonal screw thread B is connected to the top of the extended wrench.

[0017] Preferably, the bottom of the gear box is connected to a top plate, the bottom of the top plate is connected to an anti-sway arm, the anti-sway arm and the top plate are fixedly arranged, and the extended wrench is connected to the inside of the anti-sway arm. The setting of the anti-sway arm can prevent the extended wrench from shaking.

[0018] Preferably, a through hole A is opened on the surface of the top plate, and the through hole A and the top plate are integrally formed. A through groove B is opened on the surface of the gear box cover, and the through groove B and the gear box cover are integrally formed, and the through hole A and the through groove B are aligned.

[0019] Preferably, the bottom of the gear C and the gear D are connected with a bearing C, and the bearing C provides a more convenient rotation of the gear C and the gear D.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) The forward and reverse automatic reset mechanism realizes convenient control of the forward and reverse rotation of the extended wrench through a limit mechanism composed of a pull plate, a positioning column, a spring and a dividing pin. The operator only needs to simply 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 work scenarios where the tightening or loosening direction of the nut needs to be changed frequently, the advantages are obvious. This mechanism reduces the operating 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) Through the design of the extended wrench, combined with the hexagonal screw thread A at the bottom, it can be easily and quickly connected to nuts and bolts of various specifications, adapting to the operation requirements of connectors of different sizes, and broadening 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 the rotation process, allowing operators to apply force more easily and accurately, reducing the difficulty of operation and labor intensity;

[0023] (3) Through the arrangement of the upper bearing, the lower bearing, the bearing C, and the coordinated action of the fixing block A, the fixing plate B, the anti-sway arm and other components, the entire mechanism is provided with good structural stability. Under high-frequency forward and reverse rotation operations and large external forces, the wear and displacement of the components can be effectively reduced, the accuracy and reliability of the gear transmission can be ensured, and the service life of the mechanism can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the present invention when it is three-dimensionally connected;

[0026] Figure 3 It is a schematic structural diagram of the connection of gear A, gear B, gear C, gear D and gear E of the present invention;

[0027] Figure 4 It is a schematic structural diagram of the extended spanner, gear E and hexagonal screw thread A of the present invention when they are connected.

[0028] In the figure: 1. connecting rod; 2. gear box; 3. pull plate; 4. concave frame; 5. positioning column; 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. gear box cover; 17. anti-sway arm; 18. extension 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 DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-4 The present invention provides a technical solution: a forward and reverse automatic reset mechanism, comprising: a gear box 2, a gear box cover 16 is provided at the bottom of the gear box 2, and a gear A13 is provided on the surface of the gear box cover 16;

[0031] A gear B21, wherein the gear B21 is meshed with the surface of the gear A13, and a gear shaft 14 is disposed inside the gear B21;

[0032] A gear C8, wherein the gear C8 is disposed on a surface of the gear box cover 16, wherein a surface of the gear C8 meshes with a gear B21, and a surface of the gear B21 meshes with a gear D10;

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

[0034] A limiting mechanism is provided on the surface of the gear box 2, and the pull plate 3 of the limiting mechanism drives the positioning column 5, the spring 19 and the indexing pin 20 to cooperate with each other 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 gear box 2, the indexing pin 20 is slidably connected to the inside of the block 7, the spring 19 is connected to the top of the indexing pin 20, the spring 19 and the indexing pin 20 are fixedly arranged, the top of the spring 19 is connected to a concave frame 4, the spring 19 and the concave frame 4 are fixedly arranged, the positioning column 5 is connected to the inside of the concave frame 4, the pull plate 3 is connected to the top of the positioning column 5, the pull plate 3 and the positioning column 5 are fixedly arranged, and the indexing pin 20 extends to the inside of the gear box 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 the gear shaft 14 to rotate more stably.

[0037] The inner side of the gear A13 is connected with a connecting rod 1, and the connecting rod 1 passes through the gear box 2, so that the connecting rod 1 is convenient for connecting with the external nut extractor.

[0038] A mounting groove 22 is provided on one side of the surface of the gear box cover 16. The mounting groove 22 and the gear box cover 16 are integrally formed. A fixing block A9 is connected to the inside of the mounting groove 22, and the fixing block A9 is located at the bottom of the gear E24. The fixing block A9 is used to limit the rotation of the gear E24, so that the rotation of the gear E24 is more stable.

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

[0040] The bottom of the gear box 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 and the top plate 23 are fixedly arranged, and an extended wrench 18 is connected to the inside of the anti-sway arm 17. The setting of the anti-sway arm 17 can prevent the extended wrench 18 from shaking.

[0041] A through hole A27 is formed on the surface of the top plate 23, and the through hole A27 and the top plate 23 are integrally formed. A through groove B28 is formed on the surface of the gear box cover 16, and the through groove B28 and the gear box cover 16 are integrally formed, and the through hole A27 is aligned with the through groove B28.

[0042] The bottoms of the gears C8 and D10 are connected with bearings C11, and the bearings C11 provide more convenient rotation of the gears C8 and D10.

[0043] Specifically, when in use, when the operator's hand drives the pull plate 3 to move, the pull plate 3 drives the positioning column 5 to move, and the positioning column 5 further acts on the concave frame 4, so that the spring 19 is compressed or stretched, and at the same time, the indexing pin 20 slides in the block 7 and penetrates into or exits the gear box 2. In the initial state, the indexing pin 20 is inserted into a specific position inside the gear box 2 to limit rotation. When the pull plate 3 is pulled to make the indexing pin 20 out of the restricted position, the gear system can rotate freely.

[0044] When it is necessary to rotate the extended spanner 18 in the forward direction, pull the pull plate 3, the pull plate 3 drives the positioning column 5 to move upward, the positioning column 5 causes the concave frame 4 to compress the spring 19, and at the same time the indexing pin 20 slides upward in the block 7 and breaks away from the restriction on the internal transmission components of the gear box 2. At this time, the external nut extractor inputs power through the connecting rod 1 as an example, which drives the gear A13 to rotate, the gear A13 meshes with the gear B21, and transmits the power to the gear B21, and the gear B21 meshes with the gear C8 and the gear D10 respectively, thereby driving the gear C8 and the gear D10 to rotate, and finally the gear E24 rotates under the meshing action with the gear C8 and the gear D10, realizing the forward rotation of the extended spanner 18, and the hexagonal screw A26 can 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 column 5 and the indexing pin 20 to reset, and the indexing pin 20 is reinserted into the corresponding limit position inside the gear box 2, locking the current state, preventing the extended wrench 18 from continuing to rotate forward, and realizing 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 gears are meshed in the reverse direction to make the extended wrench 18 rotate in the reverse direction. After reaching the predetermined reverse position, release the pull plate 3. The spring 19 assists the indexing pin 20 to reset and lock, completing the automatic positioning after the reverse rotation.

[0047] The fixing block A9 in the mounting groove 22 plays a certain role in supporting and limiting the position of the gear E24, preventing the gear E24 from excessively moving up and down during rotation, thereby ensuring its meshing accuracy;

[0048] The fixing plate B6 on the top of the gear E24 further enhances the stability of the gear E24, ensures its structural integrity during rotation and force, maintains the reliability of connection with the extension wrench 18, and enables the power to be accurately transmitted from the gear E24 to the extension wrench 18;

[0049] The anti-sway arm 17 at the bottom of the top plate 23 firmly connects the extended wrench 18 therein to prevent the extended wrench 18 from shaking during the rotation operation, thereby 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 gear box cover 16, providing necessary space and channels for installation, debugging and movement of power transmission components, thereby ensuring that the layout of the entire mechanism is reasonable and that the components can work in coordination.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A forward and reverse automatic reset mechanism, characterized in that: include: A gear box (2), wherein a gear box cover (16) is provided at the bottom of the gear box (2), and a gear A (13) is provided on the surface of the gear box cover (16); A gear B (21), wherein the gear B (21) is meshed with a surface of the gear A (13), and a gear shaft (14) is disposed inside the gear B (21); a gear C (8), the gear C (8) being arranged on a surface of the gear box cover (16), the surface of the gear C (8) being meshed with the gear B (21), and the surface of the gear B (21) being meshed with the gear D (10); a gear E (24), the surface of the gear E (24) being meshed with the gear C (8) and the gear D (10), an extension wrench (18) being provided at the bottom of the gear E (24), and a hexagonal screw hole A (26) being provided at the bottom of the extension wrench (18); A limit mechanism is provided on the surface of the gear box (2), and the pull plate (3) of the limit mechanism drives the positioning column (5), the spring (19) and the indexing pin (20) to cooperate with each other to control the forward and reverse rotation of the extended wrench (18).

2. The forward and reverse automatic reset mechanism according to claim 1, characterized in that: The limiting mechanism comprises a block (7) connected to the surface of the gear box (2), the indexing pin (20) is slidably connected to the inside of the block (7), the spring (19) is connected to the top of the indexing pin (20), the top of the spring (19) is connected to a concave frame (4), the positioning column (5) is connected to the inside of the concave frame (4), the pull plate (3) is connected to the top of the positioning column (5), and the indexing pin (20) extends to the inside of the gear box (2).

3. The forward and reverse automatic 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 forward and reverse automatic reset mechanism according to claim 1, characterized in that: A connecting rod (1) is connected to the inner side of the gear A (13), and the connecting rod (1) passes through the gear box (2).

5. The forward and reverse automatic reset mechanism according to claim 1, characterized in that: A mounting groove (22) is provided on one side of the surface of the gear box cover (16), 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. A 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 thread B (25).

7. The forward and reverse automatic reset mechanism according to claim 1, characterized in that: The bottom of the gear box (2) is connected to a top plate (23), the bottom of the top plate (23) is connected to an anti-sway arm (17), and the extended 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: A through hole A (27) is formed on the surface of the top plate (23), a through slot B (28) is formed on the surface of the gear box cover (16), and the through hole A (27) is aligned with the through slot B (28).

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

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