Device for powerfully and automatically eliminating gear transmission clearance

Abstract

The utility model discloses a device for powerfully and automatically eliminating a gear transmission gap. The device comprises a power input shaft, an intermediate shaft, a power gear Z1 (1), a gear Z2 (2), a gear Z3 (3), a gear Z4 (4), an elastic torsion shaft (6), a sliding spline gear Zd (7), a gear Zc (8), a gear Zb (9) and a gear Za (10). A power gear Z1 (1) and a gear Za (10) are installed on a power input shaft, a gear Z2 (2) and a gear Z3 (3) are installed on a middle shaft, the left end of an elastic torsion shaft (6) is connected with a sliding spline gear Zd (7) through a spline, the right end of the elastic torsion shaft (6) and a shaft of a gear Z4 (4) are connected into a whole, and the shaft of the gear Z4 (4) serves as a power output shaft. The gear Za (10) is meshed with the sliding spline gear Zd (7) through the gear Zb (9) and the gear Zc (8), the power gear Z1 (1) is meshed with the gear Z2 (2), and the gear Z3 (3) is meshed with the gear Z4 (4). The gear clearance can be eliminated, and the cutter hitting phenomenon is eliminated.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical transmission, and relates to a device for powerfully and automatically eliminating gear transmission clearance. Background Art

[0002] In mechanical transmission, the size of gear clearance has a profound impact on transmission accuracy and precision, forward and reverse transmission hysteresis, mechanical transmission stiffness, machine tool processing accuracy, and tool damage. However, existing equipment often experiences significant impact force at startup due to meshing clearance caused by gear wear, which can damage tool teeth.

[0003] In addition, some equipment needs to be shut down and then restarted during operation. Due to gear wear, a gap will be generated. During startup, due to the gap, a large impact force is generated at the moment of startup, which can cause damage to the blade teeth. Utility Model Content

[0004] (1) Purpose of the utility model

[0005] The purpose of the utility model is to provide a device for powerfully and automatically eliminating gear transmission clearance, eliminating the gear meshing clearance caused by gear processing accuracy, assembly accuracy, and working wear, thereby achieving effective, accurate, stable, gap-free and reliable operation of production equipment or machines; it can overcome the hysteresis and impact phenomenon when reversing or restarting the equipment during operation, and effectively prevent tool damage.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the utility model provides a device for powerfully and automatically eliminating gear transmission clearance, which includes: a power input shaft, an intermediate shaft, a power gear Z11, a gear Z22, a gear Z33, a gear Z44, an elastic torsion shaft 6, a sliding spline gear Zd7, a gear Zc8, a gear Zb9, and a gear Za10; the power gear Z11 and the gear Za10 are installed on the power input shaft, the gear Z22 and the gear Z33 are installed on the intermediate shaft, the left end of the elastic torsion shaft 6 is connected to the sliding spline gear Zd7 through a spline, and the right end of the elastic torsion shaft 6 is connected to the shaft of the gear Z44 as a whole, and the shaft of the gear Z44 serves as the power output shaft; the gear Za10 is engaged with the sliding spline gear Zd7 through the gear Zb9 and the gear Zc8, the power gear Z11 is engaged with the gear Z22, and the gear Z33 is engaged with the gear Z44.

[0008] The right end of the elastic torsion shaft 6 is integrally connected to the shaft of the gear Z44 via the end face flat key 5 .

[0009] The sliding spline gear Zd7 is slidingly arranged on the spline.

[0010] The gear Zc8 and the gear Zb9 are duplex gears, the gear Za10 is engaged with the gear Zb9, and the gear Zc8 is engaged with the sliding spline gear Zd7.

[0011] Wherein, the double gear is arranged in an over-gear manner relative to the intermediate shaft.

[0012] The transmission ratios of the power gear Z11, gear Z22, gear Z33 and gear Z44 are the same as the transmission ratios of the sliding spline gear Zd7, gear Zc8, gear Zb9 and gear Za10.

[0013] When the elastic torsion shaft 6 is installed, the right end of the elastic torsion shaft 6 is first connected to the gear Z44, and then the sliding spline gear Zd7 is connected to the left end of the elastic torsion shaft 6.

[0014] When the sliding spline gear Zd7 is installed on the elastic torsion shaft 6 , the left end of the elastic torsion shaft 6 is twisted 3°-15° relative to the right end of the elastic torsion shaft 6 , so that the elastic torsion shaft 6 generates internal torsion.

[0015] When the sliding spline gear Zd7 is engaged with the gear Zc8, the gear Zc8 is fixed in advance. After the sliding spline gear Zd7 is disengaged from the gear Zc8, it is twisted by 2 to 8 teeth and then engaged with the gear Zc8.

[0016] The power gear Z11 and the gear Za10 are fixed on the power input shaft.

[0017] (3) Beneficial effects

[0018] The device for automatically eliminating gear transmission clearance with strong force provided by the above technical solution has the function of eliminating gear clearance with strong force, so that when the machine is stopped and restarted during cutting, the knife-beating phenomenon can be eliminated because there is no gear meshing clearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a schematic diagram of the structure of the device for powerfully and automatically eliminating gear transmission clearance of the utility model.

[0020] In the figure, 1-power gear Z1; 2-gear Z2; 3-gear Z3; 4-gear Z4; 5-end face flat key; 6-elastic torsion shaft; 7-sliding spline gear Zd; 8-gear Zc; 9-gear Zb; 10-gear Za. DETAILED DESCRIPTION

[0021] In order to make the purpose, content and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below with reference to the accompanying drawings and embodiments.

[0022] like Figure 1 As shown, the device for forcibly and automatically eliminating gear transmission clearance in this embodiment includes: a power input shaft, an intermediate shaft, a power gear Z11, a gear Z22, a gear Z33, a gear Z44, an elastic torsion shaft 6, a sliding spline gear Zd7, a gear Zc8, a gear Zb9, and a gear Za10; the power gear Z11 and the gear Za10 are mounted on the power input shaft, the gear Z22 and the gear Z33 are mounted on the intermediate shaft, the left end of the elastic torsion shaft 6 is spline-connected to the sliding spline gear Zd7, the right end of the elastic torsion shaft 6 is integrally connected to the shaft of the gear Z44, and the shaft of the gear Z44 serves as the power output shaft; the gear Za10 is meshed with the sliding spline gear Zd7 through the gears Zb9 and Zc8, the power gear Z11 is meshed with the gear Z22, and the gear Z33 is meshed with the gear Z44.

[0023] The right end of the elastic torsion shaft 6 is connected to the shaft of the gear Z44 through the end face flat key 5.

[0024] The sliding spline gear Zd7 is slidingly arranged on the spline.

[0025] Gear Zc8 and gear Zb9 are duplex gears, gear Za10 meshes with gear Zb9, and gear Zc8 meshes with sliding spline gear Zd7.

[0026] The duplex gears are arranged in an over-gear manner relative to the intermediate shaft.

[0027] The transmission ratios of the power gear Z11, gear Z22, gear Z33, and gear Z44 are the same as the transmission ratios of the sliding spline gear Zd7, gear Zc8, gear Zb9, and gear Za10.

[0028] When installing the elastic torsion shaft 6, first connect the right end of the elastic torsion shaft 6 to gear Z44, then connect the sliding spline gear Zd7 to the left end of the elastic torsion shaft 6. When installing the sliding spline gear Zd7 and the elastic torsion shaft 6, twist the left end of the elastic torsion shaft 6 by 3°-15° relative to the right end of the elastic torsion shaft 6 to generate internal torsion. The left end of the elastic torsion shaft 6 is then mated with the keyway of the sliding spline gear Zd7. This eliminates the meshing clearance between the gears due to the torsional force of the elastic torsion shaft 6.

[0029] The elastic torsion shaft 6 generates torsional moments in different directions, which cause the gears at both ends of the elastic torsion shaft 6 to tend to rotate when the power input shaft is stationary.

[0030] The torsional forces of the sliding spline gears Zd7, Zc8, Zb9, and Za10 and the torsional forces of the power gears Z11, Z22, Z33, and Z44 are all transmitted to the power input shaft. Gear Za10 and the power gear Z11 are fixed on the power input shaft at the same time, so there is an internal rotational force that can only make the gear teeth close together and not move, thus achieving the purpose of eliminating the gap.

[0031] In this embodiment, when the sliding spline gear Zd7 is engaged with the gear Zc8, the gear Zc8 is fixed in advance. After the sliding spline gear Zd7 is disengaged from the gear Zc8, it is twisted 2 to 8 teeth and then meshed with the gear Zc8. This generates a rotational trend in the entire transmission chain, making the gear teeth fit tightly and eliminating meshing clearance.

[0032] The utility model improves the transmission rigidity of the entire transmission chain through strong gapless transmission, reduces machine vibration, overcomes the hysteresis phenomenon of reverse feed, and improves the processing accuracy of machine tools. For example, when used in medium-sized sawing equipment, it can be stopped and restarted at will, and since there is no gear meshing gap, it reduces damage to the tool.

[0033] This utility model utilizes a pre-torsional elastic torsion shaft to pre-apply internal torsional force between the power transmission gears Z1, Z2, Z3, and Z4 and the clearance-eliminating gears Za, Zb, Zc, and Zd in the transmission chain, ensuring that the teeth of all gears in the entire transmission chain are always tightly meshed. This method eliminates gear backlash that occurs during gear assembly and after wear, improving transmission stiffness, stability, and accuracy.

[0034] As can be seen from the above technical solution, the elastic torsion shaft employed in this utility model generates a strong backlash elimination force, resulting in reliable performance and suitable for eliminating backlash in gears of medium-to-large equipment. In practical applications, eliminating backlash significantly improves mechanical transmission performance and reduces the risk of tool damage. In summary, this utility model provides an efficient and stable backlash elimination method for the gear transmission field, promising broad application prospects.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A device for automatically eliminating gear transmission clearance with strong force, characterized in that: include: Power input shaft, intermediate shaft, power gear Z1 (1), gear Z2 (2), gear Z3 (3), gear Z4 (4), elastic torsion shaft (6), sliding spline gear Zd (7), gear Zc (8), gear Zb (9), gear Za (10); power gear Z1 (1) and gear Za (10) are installed on the power input shaft, gear Z2 (2) and gear Z3 (3) are installed on the intermediate shaft, the left end of the elastic torsion shaft (6) is connected to the sliding spline gear Zd (7) through a spline, the right end of the elastic torsion shaft (6) is connected to the shaft of gear Z4 (4) into one body, and the shaft of gear Z4 (4) serves as a power output shaft; gear Za (10) is meshed with the sliding spline gear Zd (7) through gear Zb (9) and gear Zc (8), the power gear Z1 (1) is meshed with gear Z2 (2), and gear Z3 (3) is meshed with gear Z4 (4).

2. The device for automatically eliminating gear transmission clearance with strong force according to claim 1, characterized in that: The right end of the elastic torsion shaft (6) is integrally connected to the shaft of the gear Z4 (4) via an end face flat key (5).

3. The device for automatically eliminating gear transmission clearance with strong force as claimed in claim 2, characterized in that: The sliding spline gear Zd (7) is slidingly arranged on the spline.

4. The device for automatically eliminating gear transmission clearance with strong force as claimed in claim 3, characterized in that: The gear Zc (8) and the gear Zb (9) are double gears, the gear Za (10) meshes with the gear Zb (9), and the gear Zc (8) meshes with the sliding spline gear Zd (7).

5. The device for automatically eliminating gear transmission clearance with strong force as claimed in claim 4, characterized in that: The double gear is arranged in an over-gear manner relative to the intermediate shaft.

6. The device for automatically eliminating gear transmission clearance with strong force as claimed in claim 5, characterized in that: The transmission ratios of the power gear Z1 (1), gear Z2 (2), gear Z3 (3), and gear Z4 (4) are the same as the transmission ratios of the sliding spline gear Zd (7), gear Zc (8), gear Zb (9), and gear Za (10).

7. The device for automatically eliminating gear transmission clearance with strong force as claimed in claim 6, characterized in that: When the elastic torsion shaft (6) is installed, the right end of the elastic torsion shaft (6) is first connected to the gear Z4 (4) to form a whole, and then the sliding spline gear Zd (7) is connected to the left end of the elastic torsion shaft (6).

8. The device for automatically eliminating gear transmission clearance with strong force as claimed in claim 7, characterized in that: When the sliding spline gear Zd (7) is installed with the elastic torsion shaft (6), the left end of the elastic torsion shaft (6) is twisted 3°-15° relative to the right end of the elastic torsion shaft (6), so that the elastic torsion shaft (6) generates internal torsion.

9. The device for automatically eliminating gear transmission clearance with strong force as claimed in claim 8, characterized in that: When the sliding spline gear Zd (7) is engaged with the gear Zc (8), the gear Zc (8) is fixed in advance, and after the sliding spline gear Zd (7) is disengaged from the gear Zc (8), it is twisted by 2 to 8 teeth and then engaged with the gear Zc (8).

10. The device for automatically eliminating gear transmission clearance with strong force according to any one of claims 1 to 9, characterized in that: The power gear Z1 (1) and the gear Za (10) are fixed on the power input shaft.

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