阅读说明：本技术 一种具有可调减速比结构的齿轮减速机 (Gear reducer with adjustable speed reduction ratio structure ) 是由 许敏 于 2021-07-15 设计创作，主要内容包括：本发明涉及减速机技术领域,具体为一种具有可调减速比结构的齿轮减速机,包括机壳、输出轴、第一从动齿轮和输入轴,所述机壳的外表面活动连接有输出轴和输入轴,且输出轴和输入轴皆通过轴承与机壳转动连接,所述输出轴的外表面套接有第一从动齿轮,所述输入轴的外表面套接有主动齿轮,所述机壳的内部活动连接有减速机构,所述减速机构包括主轴和固定盖板,所述主轴的一端通过轴承与机壳转动连接,所述主轴的一端通过轴承活动连接有双层轴承套,且主轴的另一端安装有减速机调整机构,所述主轴的外表面均匀固定有连接轴。本发明结构紧凑,占用面积少,且具有减速比调整机构,能不停机调整,操作方便。(The invention relates to the technical field of speed reducers, in particular to a gear speed reducer with an adjustable speed reduction ratio structure, which comprises a shell, an output shaft, a first driven gear and an input shaft, wherein the output shaft and the input shaft are movably connected to the outer surface of the shell, the output shaft and the input shaft are both rotatably connected with the shell through bearings, the first driven gear is sleeved on the outer surface of the output shaft, a driving gear is sleeved on the outer surface of the input shaft, a speed reducing mechanism is movably connected inside the shell, the speed reducing mechanism comprises a main shaft and a fixed cover plate, one end of the main shaft is rotatably connected with the shell through a bearing, a double-layer bearing sleeve is movably connected to one end of the main shaft through a bearing, a speed reducer adjusting mechanism is installed at the other end of the main shaft, and a connecting shaft is uniformly fixed on the outer surface of the main shaft. The invention has compact structure, small occupied area, reduction ratio adjusting mechanism, no-stop adjustment and convenient operation.)

1. The utility model provides a gear reducer with adjustable speed reduction ratio structure, includes casing (1), output shaft (2), first driven gear (3) and input shaft (4), the surface swing joint of casing (1) has output shaft (2) and input shaft (4), and output shaft (2) and input shaft (4) all rotate with casing (1) through the bearing and be connected, first driven gear (3) have been cup jointed to the surface of output shaft (2), driving gear (5), its characterized in that have been cup jointed to the surface of input shaft (4): the inner part of the machine shell (1) is movably connected with a speed reducing mechanism (6), the speed reducing mechanism (6) comprises a main shaft (61) and a fixed cover plate (63), one end of the main shaft (61) is rotatably connected with the machine shell (1) through a bearing, one end of the main shaft (61) is movably connected with a double-layer bearing sleeve (8) through a bearing, a speed reducer adjusting mechanism (7) is installed at the other end of the main shaft (61), a connecting shaft (62) is uniformly fixed on the outer surface of the main shaft (61), the other end of the connecting shaft (62) is fixedly connected with the inner wall of the fixed cover plate (63), a speed reducing gear set (64) is uniformly distributed on the outer surface of the fixed cover plate (63), the speed reducing gear set (64) comprises a countershaft (641), two ends of the countershaft (641) are rotatably connected with the fixed cover plate (63) through bearings, and a first speed reducing gear (642) and a second speed reducing gear (643) are sleeved on the outer surface of the countershaft (641), and a first reduction gear (642) and a second reduction gear (643) are vertically distributed, the first reduction gear (642) is meshed with the driving gear (5), and the second reduction gear (643) is meshed with the first driven gear (3).

2. A gear reducer having an adjustable reduction ratio structure according to claim 1, wherein: one end of the output shaft (2) is integrally connected with a first flange plate, and one end of the input shaft (4) is integrally connected with a second flange plate.

3. A gear reducer having an adjustable reduction ratio structure according to claim 1, wherein: the diameter of the first reduction gears (642) is larger than that of the second reduction gears (643), the number of the reduction gear sets (64) is five, the five reduction gear sets (64) are uniformly distributed clockwise, the diameters of the first reduction gears (642) in the reduction gear sets (64) are arranged from large to small, and the diameters of the second reduction gears (643) are arranged from small to large.

4. A gear reducer having an adjustable reduction ratio structure according to claim 1, wherein: speed reducer guiding mechanism (7) is including linking up spiale (71), hand wheel (72) have been cup jointed to the one end of linking up spiale (71), the other end that links up spiale (71) is fixed with worm (74), the surface meshing of worm (74) has worm wheel (75), and worm wheel (75) cup joint on main shaft (61).

5. A gear reducer having an adjustable reduction ratio structure according to claim 4, wherein: double-deck bearing housing (8) are including first bearing frame (81), first bearing frame (81) are connected fixedly through bolt and casing (1), input shaft (4) are rotated with first bearing frame (81) through the bearing and are connected, main shaft (61) pierce through the inside of first bearing frame (81), the surface bolted connection of first bearing frame (81) has second bearing frame (82), and main shaft (61) rotate with second bearing frame (82) through the bearing and are connected.

6. A gear reducer having an adjustable reduction ratio structure according to claim 5, wherein: join in marriage the surface that axle (71) penetrated second bearing frame (82), the surface cover that joins in axle (71) is equipped with spring (73), the one end and hand wheel (72) of spring (73) are contradicted, and the other end of spring (73) offsets with the surface of second bearing frame (82), worm (74) deviate from the one end that joins in axle (71) and the inner wall rotation of second bearing frame (82) and are connected.

7. A gear reducer having an adjustable reduction ratio structure according to claim 6, wherein: the outer surface of the connecting shaft (71) is sleeved with a sealing ring, and the sealing ring is embedded on the second bearing seat (82).

Technical Field

The invention relates to the technical field of speed reducers, in particular to a gear speed reducer with an adjustable speed reduction ratio structure.

Background

The gear reducer is one of speed reducers, and performs speed reduction by using a transmission difference between large and small gears.

The existing gear speed reducer is a fixed speed reduction ratio, the speed reduction ratio can not be conveniently adjusted, the speed can only be changed by adjusting the rotating speed of a motor, the speed reduction ratio can not be directly changed, and the operation is troublesome, so that the gear speed reducer with the adjustable speed reduction ratio structure is urgently needed to be designed to solve the problems.

Disclosure of Invention

The invention aims to provide a gear speed reducer with an adjustable speed reduction ratio structure, so as to solve the problem that the speed reduction ratio cannot be conveniently adjusted in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a gear reducer with an adjustable reduction ratio structure comprises a casing, an output shaft, a first driven gear and an input shaft, wherein the output shaft and the input shaft are movably connected to the outer surface of the casing, the output shaft and the input shaft are rotatably connected with the casing through bearings, the first driven gear is sleeved on the outer surface of the output shaft, a driving gear is sleeved on the outer surface of the input shaft, a reduction mechanism is movably connected inside the casing and comprises a main shaft and a fixed cover plate, one end of the main shaft is rotatably connected with the casing through a bearing, a double-layer bearing sleeve is movably connected to one end of the main shaft through a bearing, a reducer adjusting mechanism is installed at the other end of the main shaft, connecting shafts are uniformly fixed to the outer surface of the main shaft, the other end of each connecting shaft is fixedly connected with the inner wall of the fixed cover plate, and reduction gear sets are uniformly distributed on the outer surface of the fixed cover plate, the reduction gear set comprises an auxiliary shaft, two ends of the auxiliary shaft are rotatably connected with the fixed cover plate through bearings, a first reduction gear and a second reduction gear are sleeved on the outer surface of the auxiliary shaft and are distributed up and down, the first reduction gear is meshed with the driving gear, and the second reduction gear is meshed with the first driven gear.

Preferably, one end of the output shaft is integrally connected with a first flange, and one end of the input shaft is integrally connected with a second flange.

Preferably, the diameter of the first reduction gear is larger than that of the second reduction gear, the number of the reduction gear sets is five, the reduction gear sets are uniformly distributed clockwise, the diameters of the first reduction gears in the reduction gear sets are distributed from large to small, and the diameters of the second reduction gears are distributed from small to large.

Preferably, the speed reducer adjusting mechanism comprises a connecting shaft, a hand wheel is sleeved at one end of the connecting shaft, a worm is fixed at the other end of the connecting shaft, a worm wheel is meshed on the outer surface of the worm, and the worm wheel is sleeved on the main shaft.

Preferably, the double-layer bearing sleeve comprises a first bearing seat, the first bearing seat is fixedly connected with the casing through a bolt, the input shaft is rotatably connected with the first bearing seat through a bearing, the main shaft penetrates through the inside of the first bearing seat, a second bearing seat is connected to the outer surface of the first bearing seat through a bolt, and the main shaft is rotatably connected with the second bearing seat through a bearing.

Preferably, the linking axle passes through the surface of second bearing frame, the surface cover that links up the axle is equipped with the spring, the one end and the hand wheel of spring are contradicted, and the other end of spring offsets with the surface of second bearing frame, the worm deviates from the one end that links up the axle and is connected with the inner wall rotation of second bearing frame.

Preferably, a sealing ring is sleeved on the outer surface of the connecting shaft and embedded in the second bearing seat.

Compared with the prior art, the invention has the beneficial effects that: the gear speed reducer with the adjustable speed reduction ratio structure is compact in structure, small in occupied area, convenient to operate and capable of being adjusted without stopping due to the fact that the gear speed reducer is provided with the speed reduction ratio adjusting mechanism.

(1) Through being the platykurtic design with the casing, being the straight line with first driven gear, driving gear and reduction gears and arranging, the whole thickness of reduction casing makes overall structure compacter, reduces the required area occupied of installation, is fit for precision machine and uses.

(2) The driving gear and the first driven gear are subjected to transitional speed reduction through the speed reduction mechanism, the main shaft is movably connected with the machine shell, the fixed cover plate can rotate in the machine shell, the speed reduction gear sets with different speed reduction ratios can be adjusted by rotating the fixed cover plate to be switched between the driving gear and the first driven gear, and therefore the speed reduction ratio is adjusted.

(3) Through being fixed with the worm wheel on the main shaft to with worm wheel and worm meshing, it is rotatory to drive linking axle through rotating the hand wheel, makes linking axle drive the worm wheel rotation through the worm, can make the main shaft drive fixed apron through the connecting axle and rotate, switches reduction gear group position, convenient operation, and when reduction gear group changes between driving gear and the first driven gear, can the automatic disconnection linkage between driving gear and the first driven gear, need not to shut down, can switch reduction gear group.

Drawings

FIG. 1 is a schematic cross-sectional elevation view of the structure of the present invention;

FIG. 2 is a schematic top view of the structure of the present invention;

FIG. 3 is a schematic overall view of the reduction gear set of FIG. 2 in accordance with the present invention;

FIG. 4 is a schematic sectional view of the reducer adjusting mechanism and the double-layer bearing housing of FIG. 1 according to the present invention;

fig. 5 is a schematic top view of the worm and worm gear of fig. 4 according to the present invention.

In the figure: 1. a housing; 2. an output shaft; 3. a first driven gear; 4. an input shaft; 5. a driving gear; 6. a speed reduction mechanism; 61. a main shaft; 62. a connecting shaft; 63. fixing the cover plate; 64. a reduction gear set; 641. a counter shaft; 642. a first reduction gear; 643. a second reduction gear; 7. a speed reducer adjusting mechanism; 71. a connecting shaft; 72. a hand wheel; 73. a spring; 74. a worm; 75. a worm gear; 8. a double-layer bearing sleeve; 81. a first bearing housing; 82. and a second bearing seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, an embodiment of the invention provides a gear reducer with an adjustable reduction ratio structure, which includes a housing 1, an output shaft 2, a first driven gear 3, and an input shaft 4, the output shaft 2 and the input shaft 4 are movably connected to an outer surface of the housing 1, the output shaft 2 and the input shaft 4 are both rotatably connected to the housing 1 through bearings, the first driven gear 3 is sleeved on the outer surface of the output shaft 2, a driving gear 5 is sleeved on an outer surface of the input shaft 4, a reduction mechanism 6 is movably connected to an interior of the housing 1, the reduction mechanism 6 includes a main shaft 61 and a fixed cover plate 63, one end of the main shaft 61 is rotatably connected to the housing 1 through a bearing, one end of the main shaft 61 is movably connected to a double-layer bearing sleeve 8 through a bearing, a reduction ratio adjusting mechanism 7 is installed at the other end of the main shaft 61, connecting shafts 62 are uniformly fixed to an outer surface of the main shaft 61, the other end of the connecting shaft 62 is connected and fixed with the inner wall of the fixed cover plate 63, the reduction gear set 64 is uniformly distributed on the outer surface of the fixed cover plate 63, the reduction gear set 64 comprises a countershaft 641, both ends of the countershaft 641 are rotatably connected with the fixed cover plate 63 through bearings, a first reduction gear 642 and a second reduction gear 643 are sleeved on the outer surface of the countershaft 641, the first reduction gear 642 and the second reduction gear 643 are distributed vertically, the first reduction gear 642 is meshed with the driving gear 5, and the second reduction gear 643 is meshed with the first driven gear 3.

Further, as shown in fig. 1, one end of the output shaft 2 is integrally connected with a first flange, and one end of the input shaft 4 is integrally connected with a second flange, so as to be beneficial to being connected with external equipment.

Further, as shown in fig. 3, the diameter of the first reduction gear 642 is larger than that of the second reduction gear 643, the number of the reduction gear sets 64 is five, the five reduction gear sets 64 are uniformly distributed clockwise, the diameters of the first reduction gear 642 in the reduction gear sets 64 are arranged from large to small, and the diameters of the second reduction gear 643 are arranged from small to large, so that the reduction ratio is reduced every time one rotation is performed, because the diameter of the first reduction gear 642 is reduced.

Further, as shown in fig. 4, the speed reducer adjusting mechanism 7 includes a connecting shaft 71, one end of the connecting shaft 71 is sleeved with a hand wheel 72, the other end of the connecting shaft 71 is fixed with a worm 74, an outer surface of the worm 74 is engaged with a worm wheel 75, and the worm wheel 75 is sleeved on the main shaft 61, so that the worm wheel 75 can drive the main shaft 61 to rotate.

Further, as shown in fig. 4, the double-layer bearing sleeve 8 includes a first bearing seat 81, the first bearing seat 81 is fixedly connected to the housing 1 through bolts, the input shaft 4 is rotatably connected to the first bearing seat 81 through a bearing, the main shaft 61 penetrates through the inside of the first bearing seat 81, the outer surface of the first bearing seat 81 is connected to a second bearing seat 82 through bolts, and the main shaft 61 is rotatably connected to the second bearing seat 82 through a bearing, so that the double-layer structure saves more space, makes the structure more compact, and is favorable for assembly.

Further, as shown in fig. 4-5, the connecting shaft 71 penetrates through the outer surface of the second bearing seat 82, a spring 73 is sleeved on the outer surface of the connecting shaft 71, one end of the spring 73 abuts against the hand wheel 72, the other end of the spring 73 abuts against the outer surface of the second bearing seat 82, one end of the worm 74, which is away from the connecting shaft 71, is rotatably connected with the inner wall of the second bearing seat 82, the hand wheel 72 is rotated to drive the connecting shaft 71 to rotate, the connecting shaft 71 drives the worm wheel 75 to rotate through the worm 74, and the worm wheel 75 drives the main shaft 61 to rotate.

Furthermore, a sealing ring is sleeved on the outer surface of the connecting shaft 71 and embedded on the second bearing seat 82, so that the sealing performance between the connecting shaft 71 and the second bearing seat 82 is improved.

The working principle is as follows: when the speed reducer is used, the output end of the motor is fixedly connected with the input shaft 4 through the coupler, the motor drives the input shaft 4 to rotate, the input shaft 4 drives the first reduction gear 642 to rotate through the driving gear 5, the diameter of the first reduction gear 642 is larger than that of the driving gear 5, the driving gear 5 rotates for one circle, the first reduction gear 642 can only rotate for a half circle or less, so that the first-stage speed reduction is achieved, the first reduction gear 642 drives the second reduction gear 643 to rotate through the auxiliary shaft 641, similarly, the diameter of the second reduction gear 643 is smaller than that of the first driven gear 3, and when the second reduction gear 643 drives the first driven gear 3 to rotate, the second-stage speed reduction can be completed, so that the output speed of the output shaft 2 is reduced.

When the reduction ratio needs to be adjusted, the hand wheel 72 is only held to rotate, the hand wheel 72 drives the connecting shaft 71 to rotate, the connecting shaft 71 drives the worm wheel 75 to rotate through the worm 74, the main shaft 61 drives the fixed cover plate 63 to rotate through the connecting shaft 62, the position of the reduction gear set 64 is switched, and the reduction ratio can be switched because the sizes of the first reduction gear 642 and the second reduction gear 643 in the reduction gear set 64 at different positions are different.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.