阅读说明：本技术 一种齿轮传动器 (Gear driver ) 是由 张艳生 龚亮亮 卢娟 黄浩春 于 2019-10-08 设计创作，主要内容包括：本发明涉及通用机械技术领域,为了解决解决齿轮传动器中主轴的精度无法保证的问题,提供了一种主轴的径向跳动及轴向窜动可调的齿轮传动器,包括：主轴、箱体以及轴控制结构,轴控制结构包括：锥孔圆柱滚子轴承、圆柱推力轴承,锥孔圆柱滚子轴承的内圈套设在主轴上,锥孔圆柱滚子轴承的外圈固定在箱体的滚子轴承安装孔上,内圈与外圈的径向间隙可调；圆柱推力轴承的轴圈套设在主轴上,圆柱推力轴承的座圈固定在箱体的推力轴承安装孔处,轴圈与座圈之间的轴向间隙可调。通过对锥孔圆柱滚子轴承进行调控,保证齿轮传动器的主轴的径向跳动量与轴向窜动量可以进行调节,进而可以保证齿轮传动器的传动误差较小、传动精度高。(The invention relates to the technical field of general machinery, and provides a gear driver with adjustable radial run-out and axial run-out of a main shaft, aiming at solving the problem that the precision of the main shaft in the gear driver can not be ensured, comprising: main shaft, box and axle control structure, axle control structure includes: the inner ring of the tapered-hole cylindrical roller bearing is sleeved on the main shaft, the outer ring of the tapered-hole cylindrical roller bearing is fixed on a roller bearing mounting hole of the box body, and the radial clearance between the inner ring and the outer ring is adjustable; the shaft ring of the cylindrical thrust bearing is sleeved on the main shaft, the seat ring of the cylindrical thrust bearing is fixed at the thrust bearing mounting hole of the box body, and the axial gap between the shaft ring and the seat ring is adjustable. By regulating and controlling the conical-hole cylindrical roller bearing, the radial runout quantity and the axial runout quantity of a main shaft of the gear driver can be regulated, and the gear driver can be further guaranteed to have small transmission error and high transmission precision.)

1. A gear transmission (50), comprising:

a main shaft (6);

a box body (7), wherein the main shaft (6) is suitable for being arranged in the box body (7) in a penetrating way;

the axle control structure, the axle control structure cover is established in order to right on main shaft (6) carry out radial runout and axial float control, the axle control structure includes: the tapered bore cylindrical roller bearing comprises a tapered bore cylindrical roller bearing (8) and a cylindrical thrust bearing (9), wherein an inner ring (81) of the tapered bore cylindrical roller bearing (8) is sleeved on the main shaft (6), an outer ring (82) of the tapered bore cylindrical roller bearing (8) is fixed on a roller bearing mounting hole (71) of the box body (7), and a radial gap between the inner ring (81) and the outer ring (82) is adjustable; the shaft ring (91) of the cylindrical thrust bearing (9) is sleeved on the main shaft (6), the seat ring (92) of the cylindrical thrust bearing (9) is fixed at the thrust bearing mounting hole (72) of the box body (7), and the axial gap between the shaft ring (91) and the seat ring (92) is adjustable.

2. The gear transmission (50) of claim 1, wherein said shaft control structure further comprises: first lock nut (83), first lock nut (83) are equipped with the internal thread, be equipped with on main shaft (6) be suitable for with first lock nut (83) screw-thread fit's external screw thread, just first lock nut (83) end is supported outer lane (82) outer end of taper hole cylindrical roller bearing (8).

3. The gear transmission (50) of claim 2, wherein said shaft control structure further comprises: the adjusting half ring (84) is sleeved on the main shaft (6), and the adjusting half ring (84) is stopped against the outer end of the inner ring (81) of the tapered-hole cylindrical roller bearing (8).

4. The gear transmission (50) of claim 1, wherein said shaft control structure further comprises: second lock nut (93), second lock nut (93) are equipped with the internal thread, be equipped with on main shaft (6) be suitable for with second lock nut (93) screw-thread fit's external screw thread, just second lock nut (93) end is in seat circle (92) outer end of cylinder thrust bearing (9).

5. The gear transmission (50) according to claim 1, characterized in that the main shaft (6) is provided with high-pressure oil channels (61) and (62), oil inlets of the oil channels (61) and (62) are located on the end surface of the conical-hole cylindrical roller bearing (8) close to the main shaft (6), and the oil channels (61) (62) are communicated with the inner ring of the conical-hole cylindrical roller bearing (8).

6. Gear transmission (50) according to claim 1, characterised in that the number of conical bore cylindrical roller bearings (8) and/or cylindrical thrust bearings (9) is at least one.

7. The gear transmission (50) of claim 1, further comprising: the main gear (5) is fixed on the main shaft (6), the auxiliary gear assembly (10) is located in the box body (7), and an auxiliary gear in the auxiliary gear set is in meshing transmission with the main gear (5).

8. The gear transmission (50) according to claim 7, characterized in that the main gear (5) or the secondary gear is a backlash adjustable gear comprising: the gear comprises a gear body (1), an adjusting gear (2) and an adjusting fastening component (3), wherein the modulus of the adjusting gear (2) is equal to that of the gear body (1), the adjusting gear (2) is suitable for being overlapped with the gear body (1), and the adjusting fastening component (3) is used for adjusting and fixing the adjusting gear (2) and the gear body (1).

9. The gear transmission (50) according to claim 8, characterized in that the adjustment fastening assembly (3) comprises: the adjusting piece (31), the adjusting piece (31) is detachably inserted in the adjusting gear (2) and the gear body (1);

when the adjusting piece (31) is inserted into the adjusting gear (2) and the gear body (1), the adjusting piece (31) limits the adjusting gear (2) to rotate relative to the gear body (1); when the adjusting piece (31) is taken down from the adjusting gear (2) and the gear body (1), the adjusting gear (2) can rotate relative to the gear body (1).

10. The gear driver (50) of claim 9, wherein the adjustment fastening assembly (3) further comprises: a fastener (32), wherein the fastener (32) can be detachably stopped against one side of the adjusting gear (2) far away from the gear body (1);

when the fastener (32) is stopped against the adjusting gear (2), the adjusting gear (2) is attached and fixed with the gear body (1); when the fastener (32) is removed from the adjusting gear (2), the adjusting gear (2) is separated from the gear body (1).

11. The gear transmission (50) according to claim 1, characterised in that the gear transmission (50) is a reduction gear.

Technical Field

The invention relates to the technical field of universal machinery, in particular to a gear driver.

Background

In the gear transmission, the requirements on radial run-out and axial play of a main shaft are high, particularly for a precise gear transmission, but the precision of the main shaft is controlled by most bearing arrangement modes completely depending on the size of the self-play of the bearing, and the bearing cannot be used when the bearing play cannot meet the requirements.

Disclosure of Invention

The invention provides a gear driver with adjustable radial run-out and axial run-out of a main shaft, aiming at solving the problem that the precision of the main shaft in the gear driver cannot be ensured.

A gear transmission according to an embodiment of the present invention includes: main shaft, box and axle control structure, the main shaft is suitable for to wear to establish in the box, axle control structure cover is established in order to right on the main shaft carries out radial runout and axial float control, the axle control structure includes: the inner ring of the tapered-hole cylindrical roller bearing is sleeved on the main shaft, the outer ring of the tapered-hole cylindrical roller bearing is fixed on the roller bearing mounting hole of the box body, and the radial gap between the inner ring and the outer ring is adjustable; the shaft ring of the cylindrical thrust bearing is sleeved on the main shaft, the seat ring of the cylindrical thrust bearing is fixed at the thrust bearing mounting hole of the box body, and the axial gap between the shaft ring and the seat ring is adjustable.

According to an embodiment of the invention, the axle control structure further comprises: the first lock nut, first lock nut is equipped with the internal thread, be equipped with on the main shaft be suitable for with first lock nut screw-thread fit's external screw thread, just first lock nut ends to be in taper hole cylindrical roller bearing's outer lane outer end.

According to an embodiment of the invention, the axle control structure further comprises: and the adjusting half ring is sleeved on the main shaft and is abutted to the outer end of the inner ring of the tapered hole cylindrical roller bearing.

According to an embodiment of the invention, the axle control structure further comprises: and the second locking nut is provided with an internal thread, the main shaft is provided with an external thread which is suitable for being in threaded fit with the second locking nut, and the second locking nut is stopped against the outer end of the seat ring of the cylindrical thrust bearing.

According to one embodiment of the invention, the main shaft is provided with a high-pressure oil passage, an oil inlet of the oil passage is positioned on the end surface of the tapered-hole cylindrical roller bearing close to the main shaft, and the oil passage is communicated with an inner ring of the tapered-hole cylindrical roller bearing.

According to one embodiment of the invention, the number of tapered bore cylindrical roller bearings and/or cylindrical thrust bearings is at least one.

According to one embodiment of the invention, the gear transmission further comprises: the main gear is fixed on the main shaft, the pinion assembly is located in the box body, and a pinion in the pinion set is in meshing transmission with the main gear.

According to one embodiment of the invention, the primary gear or the secondary gear is a backlash adjustable gear comprising: the module of the adjusting gear is equal to that of the gear body, the adjusting gear is suitable for being overlapped with the gear body, and the adjusting fastening component can be used for adjustably fixing the adjusting gear and the gear body.

According to one embodiment of the invention, the adjustment fastening assembly comprises: the adjusting piece is detachably inserted in the adjusting gear and the gear body;

when the adjusting piece is inserted into the adjusting gear and the gear body, the adjusting piece limits the adjusting gear to rotate relative to the gear body; when the adjusting piece is taken down from the adjusting gear and the gear body, the adjusting gear can rotate relative to the gear body.

According to one embodiment of the invention, the adjustment fastening assembly further comprises: the fastener can be detachably abutted against one side of the adjusting gear, which is far away from the gear body;

when the fastener is stopped against the adjusting gear, the adjusting gear is fixedly attached to the gear body; when the fastener is removed from the adjustment gear, the adjustment gear is disengaged from the gear body.

According to one embodiment of the invention, the gear transmission is a reduction gear.

The invention has the technical effects that:

according to the gear driver, the conical hole cylindrical roller bearing and the cylindrical thrust bearing are arranged on the main shaft of the gear driver, the radial jumping quantity of the main shaft is adjusted by adjusting and controlling the conical hole cylindrical roller bearing, and the axial jumping quantity of the main shaft is adjusted by adjusting and controlling the cylindrical thrust bearing, so that the radial jumping quantity and the axial jumping quantity of the main shaft of the gear driver can be adjusted, and further, the gear driver can be ensured to have small transmission error and high transmission precision.

Drawings

FIG. 1 is a schematic cross-sectional view of a spindle according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a backlash adjustable gear according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a main gear and a backlash adjustable gear according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view taken at A-A of FIG. 3;

FIG. 5 is a schematic cross-sectional view of a gear transmission according to an embodiment of the invention;

FIG. 6 is a schematic front view of a gear transmission according to an embodiment of the invention.

In the figure:

10: a pinion gear assembly; 1: a gear body; 12: a counter shaft; 2: adjusting the gear; 3: adjusting the fastening assembly; 31: an adjustment member; 32: a fastener; 4: a positioning member; 50: a gear driver; 5: a main gear; 6: a main shaft; 61: an oil passage; 62: an oil inlet; 7: a box body; 71: a roller bearing mounting hole; 72: a thrust bearing mounting hole; 8: a tapered bore cylindrical roller bearing; 81: an inner ring; 82: an outer ring; 83: a first lock nut; 84: adjusting the semi-ring; 9: a cylindrical thrust bearing; 91: a shaft ring; 92: a seat ring; 93: and a second lock nut.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 1 to 6, a gear transmission 50 according to an embodiment of the present invention includes: the main shaft 6 is suitable for being arranged in the box body 7 in a penetrating mode, the main shaft 6 is sleeved on the main shaft 6 through the main shaft 6 control structure so as to control radial runout and axial runout of the main shaft 6, and therefore the radial runout and the axial runout of the main shaft 6 are suitable, the radial runout and the axial runout of the whole shaft system of the gear driver 50 are controlled, and the gear driver 50 is small in error and high in transmission precision.

Specifically, as shown in fig. 1 and 5, the spindle 6 control structure includes: the tapered bore cylindrical roller bearing 8 and the cylindrical thrust bearing 9 are characterized in that an inner ring 81 of the tapered bore cylindrical roller bearing 8 is sleeved on the main shaft 6, an outer ring 82 of the tapered bore cylindrical roller bearing 8 is fixed on a roller bearing mounting hole 71 of the box body 7, and a radial clearance between the inner ring 81 and the outer ring 82 is adjustable, that is, the inner ring 81 of the tapered bore cylindrical roller bearing 8 is sleeved on the main shaft 6, the outer ring 82 of the tapered bore cylindrical roller bearing 8 is fixed on the roller bearing mounting hole 71 of the box body 7, when the inner ring 81 and the outer ring 82 are matched, the inner ring 81 and the outer ring 82 start to be matched as the main shaft 6 continues to move in a direction away from the outer ring 82 after penetrating the outer ring 82, wherein, because the inner ring 81 and the outer ring 82 of the tapered bore cylindrical roller bearing 8 are in inclined surface contact matching, when a joint surface of the inner ring 81 and the outer ring 82 is attached, connection can be realized, so that a certain play exists in, therefore, the amount of radial runout of the main shaft 6 can be controlled by controlling the fit clearance between the inner ring 81 and the outer ring 82.

Further, as shown in fig. 1 and 5, the collar 91 of the cylindrical thrust bearing 9 is sleeved on the main shaft 6, the race 92 of the cylindrical thrust bearing 9 is fixed at the thrust bearing mounting hole 72 of the box 7, and the axial gap between the collar 91 and the race 92 is adjustable, that is, by sleeving the collar 91 of the cylindrical thrust bearing 9 on the main shaft 6, the race 92 of the cylindrical thrust bearing 9 is fixed on the roller bearing mounting hole 71 of the box 7, when the collar 91 and the race 92 are matched, the collar 91 and the race 92 start to be matched as the main shaft 6 continues to move away from the race 92 after penetrating the race 92, wherein, since the collar 91 and the race 92 of the cylindrical thrust bearing 9 are in plane contact matching, when the joint surface of the collar 91 and the race 92 is matched, transmission can be realized, so that a certain play is provided in the axial direction of the cylindrical thrust bearing 9, therefore, the amount of radial runout of the main shaft 6 can be controlled by controlling the fit clearance between the race 92 and the ring 91.

In a specific embodiment, the tapered bore cylindrical roller bearing 8 and the cylindrical thrust bearing 9 may both be fixed on the main shaft 6, and since the tapered bore cylindrical roller bearing 8 only bears the radial load and the tapered bore cylindrical roller bearing 8 only bears the radial load, by providing the tapered bore cylindrical roller bearing 8 and the cylindrical thrust bearing 9 on the main shaft 6, the radial runout and the axial runout of the main shaft 6 may be controlled, thereby ensuring that the transmission error of the gear transmission 50 is small and the transmission precision is high.

Therefore, according to the gear driver 50 of the embodiment of the present invention, the conical-hole cylindrical roller bearing 8 and the cylindrical thrust bearing 9 are arranged on the main shaft 6 of the gear driver 50, the radial runout of the main shaft 6 is adjusted by adjusting and controlling the conical-hole cylindrical roller bearing 8, and the axial runout of the main shaft 6 is adjusted by adjusting and controlling the cylindrical thrust bearing 9, so that the radial runout and the axial runout of the main shaft 6 of the gear driver 50 can be adjusted, and further, the gear driver 50 can be ensured to have a small transmission error and high transmission precision.

According to an embodiment of the present invention, as shown in fig. 1, the shaft control structure further includes: the first lock nut 83, the first lock nut 83 is provided with an internal thread, the main shaft 6 is provided with an external thread adapted to be in thread fit with the first lock nut 83, and the first lock nut 83 is stopped against the outer end of the outer ring 82 of the tapered-hole cylindrical roller bearing 8.

According to an embodiment of the present invention, as shown in fig. 1, the shaft control structure further includes: and the adjusting half ring 84, wherein the adjusting half ring 84 is sleeved on the main shaft 6, and the adjusting half ring 84 is stopped against the outer end of the inner ring 81 of the tapered-hole cylindrical roller bearing 8.

In the specific embodiment, when the radial runout of the main shaft 6 is regulated, firstly, the tapered-hole cylindrical roller bearing 8 is sleeved in the box body 7 and the main shaft 6, the first lock nut 83 rotates toward the outer end of the outer race 82 of the tapered cylindrical roller bearing 8, and in the process of screwing the first lock nut 83, the radial play of the tapered-hole cylindrical roller bearing 8 is measured until the requirements are met, the first locking nut 83 is completely stopped at the outer end of the outer ring 82 of the tapered-hole cylindrical roller bearing 8, then the adjusting half ring 84 is processed in place according to the remaining thickness of the outer end of the inner ring 81 of the tapered-hole cylindrical roller bearing 8, and is stopped against the outer end of the inner ring 81 of the tapered-hole cylindrical roller bearing 8, therefore, the tapered-hole cylindrical roller bearing 8 can be fixed between the first locking nut 83 and the adjusting half ring 84, and the radial runout of the main shaft 6 can be adjusted and controlled.

According to an embodiment of the present invention, as shown in fig. 1, the shaft control structure further includes: and the second locking nut 93, the second locking nut 93 is provided with internal threads, the main shaft 6 is provided with external threads suitable for being in threaded fit with the second locking nut 93, and the second locking nut 93 is stopped against the outer end of the seat ring 92 of the cylindrical thrust bearing 9.

In a specific embodiment, when the radial runout of the spindle 6 is controlled, after the cylindrical thrust bearing 9 is sleeved in the box 7 and the spindle 6, the second lock nut 93 rotates towards the outer end of the race 92 of the cylindrical thrust bearing 9, and in the process of screwing the second lock nut 93, the axial play of the cylindrical thrust bearing 9 is measured, until the requirement is met, the second lock nut 93 is completely stopped at the outer end of the race 92 of the cylindrical thrust bearing 9, and then the control of the axial runout of the spindle 6 is completed.

Specifically, the shaft sleeve can be arranged at one end of the shaft ring 91 close to the cylindrical thrust bearing 9, and the shaft sleeve is suitable for stopping the outer end of the shaft ring 91 of the cylindrical thrust bearing 9, so that the cylindrical thrust bearing 9 can be fixed between the second locking nut 93 and the shaft sleeve, the cylindrical thrust bearing 9 is guaranteed to be fixed reliably, and the high reliability of the regulation and control of the radial runout of the main shaft 6 is guaranteed.

According to an embodiment of the present invention, as shown in fig. 1, the main shaft 6 is provided with oil passages 61 and 62, oil inlets of the oil passages 61 and 62 are located on an end surface of the tapered-hole cylindrical roller bearing 8 close to the main shaft 6, the oil passages 61 and 62 communicate with a surface of an inner ring of the tapered-hole cylindrical roller bearing 8, and high-pressure oil can enter from the oil passages 61 and 62 to expand the inner ring of the tapered-hole cylindrical roller bearing 8, so as to facilitate assembly adjustment and disassembly of the tapered-hole cylindrical roller bearing 8.

When the radial runout of the main shaft 6 is controlled, high-pressure oil can be injected into the oil duct 61 (or 62) while the first lock nut 83 is tightened, so that the inner ring of the tapered-hole cylindrical roller bearing 8 is expanded, and the assembly adjustment and the disassembly of the tapered-hole cylindrical roller bearing 8 are facilitated.

According to an embodiment of the present invention, the number of the tapered bore cylindrical roller bearings 8 and/or the cylindrical thrust bearings 9 is at least one, that is, a plurality of tapered bore cylindrical roller bearings 8 and/or cylindrical thrust bearings 9 may be provided in the gear transmission 50, and thus, by providing a plurality of tapered bore cylindrical roller bearings 8 and/or cylindrical thrust bearings 9, it is possible to advantageously improve the stability of the regulation of the radial runout and the axial runout of the main shaft 6.

In the embodiment shown in fig. 1, the number of the tapered-hole cylindrical roller bearings 8 is two, the number of the cylindrical thrust bearings 9 is one, and the cylindrical thrust bearing 9 is located between the two tapered-hole cylindrical roller bearings 8. In an embodiment not shown, the number of tapered-bore cylindrical roller bearings 8 may be two or three, etc., and the number of cylindrical thrust bearings 9 may be two or three, etc.

According to one embodiment of the present invention, as shown in fig. 1 and 3, the gear transmission 50 further includes: the main gear 5 and the pinion gear assembly 10, the main gear 5 is fixed on the main shaft 6, the pinion gear assembly 10 is located in the box body 7, and the pinion gear in the pinion gear set is in meshing transmission with the main gear 5, so that the transmission process of the gear driver 50 is realized, and the normal transmission of power is ensured.

According to an embodiment of the present invention, the main gear 5 or the pinion gear is a backlash adjustable gear, that is, one of the main gear 5 and the pinion gear in the gear driver 50 is a backlash adjustable gear, so that it is possible to ensure that the backlash between the main gear 5 and the pinion gear is adjusted, and further, it is possible to solve the problem of non-uniformity of the backlash of the gears due to non-uniformity of the machining accuracy of the gears and other accumulated errors, and at the same time, to adjust the backlash of the gears according to a set value.

In order to clearly and briefly explain how the backlash between the main gear 5 and the pinion gear is adjusted, the pinion gear is taken as an example of the backlash adjustable gear.

Specifically, as shown in fig. 2, the backlash adjustable gear includes: gear body 1, adjusting gear 2 and adjustment fastening component 3, the modulus of adjusting gear 2 is equal with the modulus of gear body 1, and adjusting gear 2 is suitable for and coincides with gear body 1, and adjustment fastening component 3 carries out adjustable fixed with gear body 1 to adjusting gear 2.

That is, the adjusting gear 2 and the gear body 1 are two identical gears, and the adjusting gear 2 and the gear body 1 are overlapped, so that the adjusting gear 2 and the gear body 1 can be meshed with the main gear 5 for transmission, thereby providing a possibility for the adjusting gear 2 to adjust the backlash between the gear body 1 and the main gear 5.

Specifically, since the adjusting gear 2 mainly adjusts the backlash between the gear body 1 and the main gear 5, the gear body 1 is a main engagement force-receiving member, so that the thickness of the adjusting gear 2 can be smaller than that of the gear body 1, thereby ensuring that the backlash adjustable gear has a small size and light weight.

Further, adjustment fastening component 3 is adjustable fixed to adjustment gear 2 and gear body 1, and adjustment fastening component 3 can fix or loosen adjustment gear 2 and gear body 1 promptly to guarantee that adjustment gear 2 can carry out axial for gear body 1 and rotate, and, adjustment fastening component 3 can also fix adjustment gear 2 and gear body 1, thereby realizes adjusting the backlash of gear body 1 and master gear 5, and then guarantees that the backlash between adjustable gear of backlash and the master gear 5 is moderate.

In a specific embodiment, the backlash adjustable gear is suitable for being in meshing transmission with the main gear 5, and a certain backlash exists between the gear body 1 and the main gear 5, when the meshing time of the gear body 1 and the main gear 5 is long, or because the machining precision of the gear body 1 and the main gear 5 is not enough, the backlash value between the gear body 1 and the main gear 5 is liable to change, therefore, the overlapping included angle between the adjusting gear 2 and the gear body 1 is adjusted by loosening the adjusting and fastening assembly 3, so that the adjusting gear 2 occupies the clearance amount between the teeth of the main gear 5, and further the backlash value between the gear body 1 and the main gear 5 can be adjusted, and then the adjusting gear 2 and the gear body 1 are fixed by adjusting and fastening the assembly 3, so that the backlash between the backlash adjustable gear and the main gear 5 is moderate.

In particular, for a device using gear transmission, it is generally necessary to make up a plurality of sets of gears, and therefore, if the backlash of two sets of gears meshing with each other is different, this results in a large amount of backlash between the gear sets of the reduction gear, and thus in a large amount of backlash between the input shaft and the output shaft of the reduction gear, for the speed reducer requiring precise transmission, the working precision of the speed reducer is poor, and the gear sets in some speed reducers are a plurality of gear sets with unidirectional synchronous input, and it is further necessary to ensure that the backlash of each stage of gear is the same, therefore, by arranging the backlash adjustable gear, the adjusting gear 2 can adjust the backlash of the gear body 1 and the main gear 5, therefore, the uniform backlash of each stage of gears can be ensured, and the problem of non-uniform backlash of the gears caused by non-uniform machining precision of each gear, error among center distances of the mounting boxes 7 and other accumulated errors (such as assembly errors) can be solved.

According to one embodiment of the present invention, as shown, the adjustment fastening assembly 3 comprises: the adjusting piece 31 is detachably inserted in the adjusting gear 2 and the gear body 1, when the adjusting piece 31 is inserted in the adjusting gear 2 and the gear body 1, the adjusting piece 31 limits the adjusting gear 2 to rotate relative to the gear body 1, because the adjusting piece 31 is positioned in the adjusting gear 2 and the gear body 1, the adjusting gear 2 and the gear body 1 cannot rotate relative to each other, at the moment, the backlash between the gear body 1 and the main gear 5 cannot be adjusted, and when the adjusting piece 31 is taken down from the adjusting gear 2 and the gear body 1, the adjusting gear 2 can rotate relative to the gear body 1. Since the adjusting member 31 is removed from the adjusting gear 2 and the gear body 1, the restriction between the adjusting gear 2 and the gear body 1 disappears, the adjusting gear 2 and the gear body 1 can rotate relatively, and at this time, the backlash between the gear body 1 and the main gear 5 can be adjusted.

According to one embodiment of the present invention, as shown in fig. 2, the adjustment fastening assembly 3 further comprises: the fastener 32, the fastener 32 stops against the side of the adjusting gear 2 far away from the gear body 1 detachably;

when the fastener 32 ends to support on adjusting gear 2, adjusting gear 2 is fixed with the laminating of gear body 1 to realize that adjusting gear 2 is fixed with gear body 1, guarantee that adjusting gear 2 is connected reliably with gear body 1, thereby guarantee that backlash adjustable gear's operational reliability is high, when fastener 32 takes off from adjusting gear 2, adjusting gear 2 separates with gear body 1, thereby conveniently adjust the backlash between gear body 1 and the master gear 5.

According to an embodiment of the present invention, as shown in fig. 2, the backlash adjustable gear further includes: the positioning piece 4 and the positioning piece 4 are detachably inserted into the adjusting gear 2 and the gear body 1, so that the adjusting gear 2 and the gear body 1 are positioned.

When the positioning piece 4 is inserted into the adjusting gear 2 and the gear body 1, the relative rotation between the adjusting gear 2 and the gear body 1 is limited, and the positioning piece 4 positions the relative position between the adjusting gear 2 and the gear body 1; when the positioning member 4 is removed from the adjusting gear 2 and the gear body 1, the adjusting gear 2 and the gear body 1 are released from the positioning.

According to an embodiment of the present invention, the number of the adjusting members 31 and/or the positioning members 4 is multiple, and the adjusting members 31 and the positioning members 4 are alternately and uniformly arranged on the circumference, so that the connection reliability between the adjusting gear 2 and the first gear can be ensured to be high, and the positioning between the adjusting gear 2 and the gear body 1 can be ensured to be reliable.

The process of the backlash adjustable gear engaging with the main gear 5 and adjusting the backlash of the backlash adjustable gear with the main gear 5 is briefly described below:

the adjusting gear 2 is sleeved on the auxiliary shaft 12 and is arranged in a manner of being overlapped with the gear body 1, then the adjusting piece 31 and the fastening piece 32 are sequentially screwed in, the fixing of the adjusting gear 2 and the gear body 1 is realized, the strength of the backlash adjustable gear is enough, then the backlash adjustable gear can be ground, the smooth tooth surface and high accuracy of the backlash adjustable gear are ensured, then the backlash adjustable gear and the main gear 5 are assembled, and the preliminary backlash between the backlash adjustable gear and the main gear 5 is measured, after the backlash value to be adjusted is determined, and loosening the adjusting piece 31 and the fastening piece 32, rotating the adjusting gear 2 in a certain angle according to a set direction to ensure that when the backlash value between the gear body 1 and the main gear 5 is appropriate, and then the adjusting piece 31 and the fastening piece 32 are screwed in sequence to complete the process of adjusting the backlash of the adjustable backlash gear and the main gear 5 in a matching way and the process of adjusting the backlash of the adjustable backlash gear and the main gear 5.

Of course, in a specific embodiment, the main gear 5 may also be a backlash adjustable gear, and when the main gear 5 is the backlash adjustable gear, the backlash adjustment process between the main gear 5 and the secondary gear is the same as the above structure and process, and will not be described again here.

According to one embodiment of the invention, the gear transmission 50 is a speed reducer.

In a specific embodiment, the gear driver 50 may be a precision winding speed reducer, wherein the precision winding speed reducer may be used for driving a final speed reducer by a winding core module of a space rocket, and therefore, the speed reducer needs to have a stable circumferential speed, high control precision, high transmission efficiency, high reliability and long service life.

Specifically, since the gear transmission 50 is large in volume and mass of the driven core mold, the reducer is required to provide a sufficiently large driving torque, and in the embodiment shown in fig. 5 to 6, the reducer adopts a dual-input driving structure to satisfy a large output torque by power combining.

Furthermore, as the reducer is in operation, the diameter of the machine body shell in which the reducer is operated is bound to have a plurality of arc-shaped areas, so that the reducer is required to provide precise acceleration or deceleration motion to ensure the uniform tightness of the winding material in the arc-shaped areas when the material is wound, in a specific embodiment, a precise tapered hole cylindrical roller bearing 8 is selected, and the radial runout of an output shaft system of the reducer is controlled by adjusting the radial clearance of the tapered hole cylindrical roller bearing 8; selecting a precise cylindrical thrust roller bearing 9, and adjusting the axial clearance of the thrust bearing to meet the axial movement requirement of the speed reducer through the locking state of a precise locking round nut; the backlash of the transmission gear is freely controlled by adjusting the staggered gear set; the strength and precision of the gear are ensured by adopting the high-strength and high-precision gear, such as the gear subjected to carburizing and quenching treatment by adopting the carbon alloy steel 18CrNiMo6, so that the speed reducer can provide high-precision and high-reliability rotary driving motion.

Further, the box body 7 of the speed reducer can adopt an integral casting structure, so that the machining error of the box body 7 can be effectively reduced, the assembling error of the box combination can be reduced, and the stability of the speed reducer can be improved.

The above embodiments are preferred embodiments of the present invention, and those skilled in the art can make variations and modifications to the above embodiments, therefore, the present invention is not limited to the above embodiments, and any obvious improvements, substitutions or modifications made by those skilled in the art based on the present invention are within the protection scope of the present invention.