CN203532659U - Single-stage lateral transmission cylindrical cam reducer - Google Patents

Abstract

A single-stage lateral transmission cylindrical cam reducer mainly includes an input shaft, a cylindrical cam, a rotating disc, a cylindrical roller, an output shaft, a box body, and a box cover; the entire transmission part is positioned and sealed through the box body and the box cover; The cylindrical cam is connected with the input shaft through a key, the contour surface of the cylindrical cam meshes with the cylindrical rollers distributed in the circumferential direction of the rotating disc, and the rotating disc is connected with the output shaft through a key; one end of the output shaft 7 protrudes from the box, and the output The end is provided with output shaft splines, and is connected with gears for power output. It has the advantages of large transmission ratio, stable transmission, small space occupation, and is suitable for low speed and heavy load.

Description

Single-stage lateral drive cylindrical cam reducer

technical field

The utility model relates to mechanical transmission, in particular to a single-stage lateral transmission cylindrical cam reducer.

Background technique

The reducer is a mechanical transmission component. Most of the existing reducers are gear reducers, planetary gear reducers, worm gear reducers, etc. The transmission of the gear reducer is relatively small, and the efficiency is further reduced when multi-stage transmission is used. At the same time, under heavy load conditions, the impact force of the tooth surface is relatively large, and the vibration and wear during the meshing process are correspondingly large; It can meet the requirements, and the transmission is stable at the same time, but its volume is large, and there is sliding friction between the turbine and the worm, and the wear and friction heating are serious under high-speed and heavy loads, resulting in large wear and seriously reducing the transmission efficiency; and other common deceleration Gear reducers such as planetary gear reducers, cycloidal pin gear reducers, harmonic reducers, etc. have high transmission accuracy, but the transmitted torque should not be too large, and are not suitable for heavy-duty working conditions. These problems will lead to an increase in the size of the selected motor, higher requirements on the material of the corresponding shaft and gear, and an increase in the size of the structure. Larger wear and tear will require higher hardness of the material surface treatment, and will also reduce Small service life and service cycle, wear to a certain extent will also affect the smooth transmission, cause greater vibration, and further aggravate material wear, and even cause safety accidents.

Contents of the invention

The purpose of the utility model is to solve the problem that the tooth surface of the existing reducer is severely worn and takes up a large space in the case of low speed and heavy load, and to provide a gear with a large transmission ratio, stable transmission, small space occupation, suitable for Single-stage side drive cylindrical cam reducer for low speed and heavy load.

In order to achieve the above object, the technical solution adopted in the utility model is:

It mainly includes an input shaft, a cylindrical cam, a rotating disc, a cylindrical roller, an output shaft, a box body, and a box cover; the entire transmission part is positioned and sealed through the box body and the box cover; the cylindrical cam and the input shaft are connected by a key, and the cylindrical cam The contoured surface meshes with the cylindrical rollers distributed in the circumferential direction of the rotating disc, and the rotating disc is connected with the output shaft through a key; one end of the output shaft protrudes from the box, and an output shaft spline is provided at the output end, and is connected with a PTO gears.

According to the above scheme, the shaft end of the input shaft is provided with a central hole, and an input shaft spline for cooperating with the motor is provided in the hole, and at the same time, a double keyway cooperating with the cylindrical cam is provided on the shaft body of the input shaft, and the double keyway can increase Torque is transmitted while a shoulder on the input shaft is used to define the position of the cylindrical cam. The input shaft is connected on the casing and the case cover through the input shaft bearing cover and the input shaft bearing sleeve.

According to the above scheme, the shaft body of the output shaft is provided with an output shaft keyway connected with the rotating disc, and at the same time, the protruding end is provided with a gear for power output, and the gear and the output shaft are connected by splines of the output shaft; The shaft bearing cover is connected with the output shaft bearing sleeve on the box body.

According to the above scheme, the shaft center of the rotating disk is designed with a keyway connected to the output shaft, the axis of the rotating disk is perpendicular to the axis of the cylindrical cam, and the cylindrical rollers are connected to the rotating disk through angular contact bearings arranged in a "back-to-back" manner , the cylindrical roller surface and the contour surface of the cylindrical cam are conjugate meshes of two curved surfaces in space. Angular contact bearings arranged in "back-to-back" can fix the displacement of the cylindrical roller in the axial direction, but it does not affect the circumferential rotation of the cylindrical roller.

According to the above scheme, the shape of the box body is two intersecting cylindrical surfaces, which can greatly reduce the space occupied by the whole machine while satisfying the internal assembly space, and can also reduce the use of materials and the quality of the box body , At the same time, there is a breather on the box.

Due to the adoption of the above-mentioned technical scheme, the utility model has the advantages of relatively large transmission ratio, stable transmission, small occupied space and suitable for low speed and heavy load.

Description of drawings

Fig. 1 is an axonometric view of the overall appearance structure of the present utility model.

Fig. 2 is a side view of the overall appearance structure of the utility model.

Fig. 3 is a schematic view of the internal structure of the utility model.

Fig. 4 is a structural schematic diagram of the output shaft of the present invention.

Fig. 5 is a structural schematic diagram of the input shaft of the present invention.

Fig. 6 is a schematic diagram of the internal transmission structure of the utility model.

Fig. 7 is a schematic diagram of the box structure of the present invention.

In the figure: 1. Breather, 2. Box body, 3. Box cover, 4. Output shaft bearing cover, 5. Input shaft bearing cover, 6. Output shaft bearing sleeve, 7. Gear, 8. Input shaft center hole, 9. Input shaft spline keyway, 10. Input shaft bearing sleeve, 11. Output shaft spline, 12. Output shaft, 13. Output shaft keyway, 14. Input shaft, 15. Input shaft double keyway, 16. Shaft shoulder, 17. rotating disk, 18. angular contact bearing, 19. cylindrical roller, 20. cylindrical cam.

Detailed ways

As shown in Figure 1, Figure 2, Figure 3, Figure 4, Figure 5, Figure 6, and Figure 7, it mainly includes an input shaft 14, a cylindrical cam 20, a rotating disc 17, a cylindrical roller 19, an output shaft 12, and a box 2 with box cover 3. The entire transmission part is positioned and sealed by the box body 2 and the box cover 3; the cylindrical cam 20 is connected with the input shaft 14 through a key, and the contour surface of the cylindrical cam 20 meshes with the cylindrical rollers 19 distributed in the circumferential direction of the rotating disk 17, and the rotation The disc 17 is connected with the output shaft 12 by a key; one end of the output shaft 12 protrudes from the casing 2, and an output shaft spline 11 is arranged at the output end, and a gear 7 for power output is connected.

The input shaft 14 shaft end is provided with central hole 8, is provided with the input shaft spline key groove 9 that is used to cooperate with motor in the hole, is provided with the double key groove 15 that cooperates with cylindrical cam 20 on input shaft 14 axle body simultaneously, double key groove 15 can Increase the transmission torque; at the same time, a shaft shoulder 16 is provided on the input shaft 14 to limit the position of the cylindrical cam 20; the input shaft 14 is connected to the box body 2 and the box cover 3 through the input shaft bearing cover 5 and the input shaft bearing sleeve 10 .

The output shaft 12 is provided with an output shaft keyway 13 connected with the rotating disk 17 on the shaft body, and the output shaft 12 is connected on the casing 2 through the output shaft bearing cover 4 and the output shaft bearing sleeve 6 .

The axis of the rotating disk 17 is provided with a keyway connected to the output shaft 12, the axis of the rotating disk 17 is perpendicular to the axis of the cylindrical cam 20, and the cylindrical roller 19 is connected to the rotating disk 17 through the angular contact bearing 18 arranged in a "back-to-back" manner , the curved surface of the cylindrical roller 19 and the contour surface of the cylindrical cam 20 are conjugate meshes of two curved surfaces in space; the angular contact bearing 18 of the "back-to-back" arrangement can fix the displacement of the cylindrical roller 19 in the axial direction, but does not affect the cylindrical roller 19 Circumferential rotation; thus the cylindrical roller 19 is forced to roll on the contour surface of the cylindrical cam 20, and the friction therebetween is rolling friction, which can greatly reduce the friction force and increase the transmission efficiency.

The shape of the box 2 is two intersecting cylindrical surfaces, which can greatly reduce the space occupied by the whole machine while satisfying the internal assembly space. At the same time, it can also reduce the use of materials and reduce the quality of the box 2. 2 is provided with ventilator 1.

When the utility model is working, at first the motor drives the input shaft 14 to rotate through the key connection between the input shaft 14, and the cylindrical cam 20 connected to the input shaft 14 will also rotate around its own axis. The curved surface of the cylindrical roller 19 on the disc 17 is in contact with each other. When the cylindrical cam 20 rotates, the cylindrical roller 19 is forced to roll on the contour of the cylindrical cam 20. At the same time, the cylindrical roller 19 rotates around its own axis, and the cylindrical roller 19 The rotating disk 17 connected by the angular contact bearing 18 will also produce rotation around its own circumferential direction, and the torque generated by the rotating disk 17 around the axis direction will pass through the output shaft 12 output shaft that is connected with the rotating disk 17. The spline 11 is connected to the gear 7 output.

Claims (5)

1. A single-stage lateral transmission cylindrical cam reducer, characterized in that it includes an input shaft (14), a cylindrical cam (20), a rotating disc (17), a cylindrical roller (19), and an output shaft (12) , box body (2), box cover (3); the entire transmission part is positioned and sealed through the box body (2) and box cover (3); the cylindrical cam (20) is connected with the input shaft (14) by a key, and the cylindrical cam ( The profile surface of 20) meshes with the cylindrical rollers (19) distributed in the circumferential direction of the rotating disk (17), and the rotating disk (17) is connected with the output shaft (12) through a key; one end of the output shaft (12) is extended Out of the box (2), an output shaft spline (11) is provided at the output end, and a gear (7) for power output is connected. 2. The single-stage lateral transmission cylindrical cam reducer according to claim 1, characterized in that: the shaft end of the input shaft (14) is provided with a central hole (8), and a hole for cooperating with the motor is provided in the hole. The input shaft spline keyway (9), and the input shaft double keyway (15) matching with the cylindrical cam (20) is provided on the shaft body of the input shaft (14), and the shaft shoulder (16) is designed on the input shaft (14). ), used to limit the position of the cylindrical cam (20); the input shaft (14) is connected to the case body (2) and the case cover (3) through the input shaft bearing cover (5) and the input shaft bearing sleeve (10). 3. The single-stage lateral transmission cylindrical cam reducer according to claim 1 or 2, characterized in that: the shaft body of the output shaft (12) is provided with an output shaft keyway ( 13), the output shaft (12) is connected to the box body (2) through the output shaft bearing cover (4) and the output shaft bearing sleeve (6). 4. The single-stage lateral transmission cylindrical cam reducer according to claim 3, characterized in that: the axis of the rotating disc (17) is provided with a keyway connected with the output shaft (12), and the rotating disc (17) (17) The axis is perpendicular to the axis of the cylindrical cam (20), and the cylindrical roller (19) is connected to the rotating disc (17) through the angular contact bearing (18) arranged in a "back-to-back" manner. The curved surface of the cylindrical roller (19) is connected to the cylindrical The contour surface of the cam (20) is the conjugate mesh of two surfaces in space. 5. The single-stage lateral transmission cylindrical cam reducer according to claim 4, characterized in that: the shape of the box (2) is two intersecting cylindrical surfaces, and the box (2) is equipped with There is a breather (1).

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