CN217328344U

CN217328344U - Slewing bearing device

Info

Publication number: CN217328344U
Application number: CN202121492897.6U
Authority: CN
Inventors: 文民青; 张天福; 徐中亚
Original assignee: Hubei Hanggang Technology Co ltd
Current assignee: Hubei Hanggang Technology Co ltd
Priority date: 2021-07-01
Filing date: 2021-07-01
Publication date: 2022-08-30
Anticipated expiration: 2031-07-01

Abstract

The utility model provides a slewing bearing device belongs to slewing bearing technical field. The technical problems that the movement of the slewing bearing is irregular, the precision of the movement angle is poor and the like are solved. The slewing bearing device comprises a shell, wherein a transmission shaft is arranged at one end of the shell in a penetrating mode, a harmonic speed reducer connected with the transmission shaft and a servo motor capable of enabling the harmonic speed reducer to drive the transmission shaft to rotate circumferentially are fixedly arranged at the other end of the shell, and a supporting assembly used for limiting the axial position and the radial position of the transmission shaft is arranged in the shell. The utility model provides a servo motor can be with program control, and servo motor and harmonic speed reducer machine cooperate and can improve the regularity of this slewing bearing device motion and the precision of operation angle degree.

Description

Slewing bearing device

Technical Field

The utility model belongs to the technical field of slewing bearing, a slewing bearing device is related to.

Background

At present, in home and abroad high-altitude operation equipment, a hanging basket and a lifting auxiliary arm are connected by a spiral swing oil cylinder, and the left and right rotation of the hanging basket can be controlled by using an operating handle; the spiral swing oil cylinder mainly comprises a flange, a thrust ring, a spline sleeve, a piston, an input shaft and a shell, the spiral swing oil cylinder converts the linear motion of the piston into the swing motion of the flange in a form of inclined thread engagement, and the output rotation of the flange is realized through the relative motion between two pairs of spiral pairs, namely a spiral line in the shell and an outer spiral line of the spline sleeve, an inner spiral line of the spline sleeve and an outer spiral line of the flange; the spiral swing oil cylinder has obvious defects when used for a slewing bearing, the manual operation of the spiral swing oil cylinder is controlled by the handle, only simple actions such as left swing or right swing can be roughly realized, regular motion cannot be realized, and the running precision is lower.

Disclosure of Invention

The utility model discloses to the above-mentioned problem that prior art exists, provide a slewing bearing device, the utility model aims to solve the technical problem that: how to improve the regularity of the movement of the slewing bearing and the precision of the operation angle.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a slewing bearing device, includes the casing, its characterized in that, the transmission shaft is worn to be equipped with by the one end of casing, the other end of casing set firmly with the harmonic speed reducer that the transmission shaft links to each other with enable the harmonic speed reducer drives transmission shaft circumferential direction's servo motor, be equipped with in the casing and be used for injecing the supporting component of transmission shaft axial and radial position.

The working principle is as follows: the object can be fixed on the transmission shaft among this technical scheme, servo motor can make harmonic speed reducer machine drive transmission shaft rotation, because servo motor can use program control and harmonic speed reducer machine to have the advantage that transmission precision is high, consequently this slewing bearing device and the epaxial object of transmission just can be according to the rule motion of settlement of procedure, the precision of operation angle has also obtained the improvement moreover, supporting component has the supporting role, make the transmission shaft only can circumferential direction, can normal operating provide the guarantee for this slewing bearing device.

In the slewing bearing device, the support assembly comprises a thrust bearing, two deep groove ball bearings and a shaft sleeve, wherein the thrust bearing, the two deep groove ball bearings and the shaft sleeve are sleeved on the transmission shaft; the one end middle part of casing is equipped with the mounting hole that runs through the other end, the transmission shaft is including being located axial region one in the mounting hole is in with the setting the axial region two of axial region one end, thrust bearing, two deep groove ball bearing and axle sleeve all overlap and are established axial region one is last, the annular boss of inside extension has on the pore wall of mounting hole, the inner wall of annular boss have with the step face of one side looks butt of thrust bearing, the thrust bearing opposite side with the one end looks butt of axial region two, axial region one is kept away from the one end of axial region two set firmly with the connection pad that the harmonic speed reducer links to each other, two deep groove ball bearing sets up respectively the both ends of axle sleeve and respectively with one side of annular boss and connection pad looks butt. The axial force of other parts connected on the transmission shaft acts on the thrust bearing, the overturning moment acts on the two deep groove ball bearings, and the thrust bearing, the two deep groove ball bearings and the shaft sleeve are combined to bear external force, so that the large bearing capacity is achieved, the resistance of the transmission shaft when the transmission shaft rotates is reduced, and the rotating efficiency of the transmission shaft is improved.

In the above slewing bearing device, the first shaft portion and the second shaft portion are both arranged in a cylindrical shape, and the first shaft portion has a smaller cross-sectional diameter than the second shaft portion and is coaxially arranged. The structure of transmission shaft makes thrust bearing, two deep groove ball bearings and axle sleeve all with the coaxial setting of transmission shaft, reduces the wearing and tearing of transmission shaft, thrust bearing, two deep groove ball bearings and axle sleeve when the transmission shaft rotates.

In the slewing bearing device, the middle part of one end of the first shaft part, which is far away from the second shaft part, is provided with a positioning hole extending inwards, the outer edge of the end of the first shaft part is provided with a plurality of threaded holes, the middle part of one side of the connecting disc is provided with a positioning part capable of being embedded into the positioning hole, and the connecting disc is provided with a plurality of fixing screws capable of being screwed in the corresponding threaded holes in a penetrating manner. The first shaft part is provided with a positioning hole and a positioning part on the connecting disc, so that the stability of the fixed connection between the transmission shaft and the connecting disc is improved.

In the above-mentioned rotary support device, the outer edge of the first end of the shaft portion, which is provided with the positioning hole, is further provided with a plurality of pin holes, and the connecting disc is provided with a plurality of cylindrical pins capable of being embedded into the corresponding pin holes in a penetrating manner. The arrangement of the pin hole and the cylindrical pin improves the convenience of the fixed screw in the corresponding threaded hole.

In the slewing bearing device, the number of the pin holes is two, the number of the threaded holes is six, the two pin holes and the six threaded holes are circumferentially distributed around the positioning hole at intervals on the outer edge of one end of the first shaft part, and the two pin holes are respectively arranged on two opposite sides of the positioning hole. The arrangement positions of the two pin holes and the six threaded holes enable the transmission shaft to be stressed uniformly, and the running stability of the transmission shaft is improved.

In the slewing bearing device, one end of the second shaft part, which is far away from the first shaft part, extends out of the mounting hole, and the periphery of the end is provided with a connecting flange extending outwards. The connecting flange is arranged to facilitate the connection of other objects and the transmission shaft.

In the above slewing bearing device, the harmonic reducer comprises a harmonic generator, a flexible gear and a rigid gear, an output shaft of the servo motor is connected with the harmonic generator through a flat key, and the rigid gear is fixedly connected with the connecting disc through a positioning screw. The flat key and the positioning screw are common parts, the servo motor, the harmonic reducer and the connecting disc can be connected by using the common parts, and the difficulty in manufacturing and mounting the slewing bearing device is reduced.

In the slewing bearing device, the harmonic reducer and the servo motor are positioned at one end of the shell, the end of the shell is provided with a first fixing hole, a first fixing bolt capable of being screwed in the first fixing hole correspondingly penetrates through a shell of the harmonic reducer and a shell of the servo motor, the other end of the shell is provided with an oil seal cover sleeved on the second shaft part, the end of the shell is provided with a second fixing hole, and the oil seal cover is provided with a second fixing bolt capable of being screwed in the second fixing hole correspondingly. The casing simple structure just can fix harmonic speed reducer machine and servo motor on the casing through fixed orifices one and fixing bolt, just can fix the oil blanket lid on the casing through fixed orifices two and fixing bolt two, has reduced the degree of difficulty of this slewing bearing device production and equipment, has reduced manufacturing cost.

In the above slewing bearing device, the housing is cylindrical, the mounting hole is located in the middle of the housing, and the outer periphery of the housing has a plurality of fixing portions extending outward. The fixing part is arranged to facilitate fixing the shell on other parts.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model discloses well servo motor can be higher with program control and precision, and servo motor and harmonic speed reducer combination are used for the drive transmission shaft to rotate, have improved the regularity of this slewing bearing device motion and the precision of operation angle degree.

2. The utility model discloses well thrust bearing, two deep groove ball bearings and axle sleeve have great bearing capacity mutually, have reduced the resistance that receives when the transmission shaft rotates, have improved this slewing bearing device's operating efficiency and life.

3. The utility model discloses the simple structure of well casing and transmission shaft has reduced this slewing bearing device's the manufacturing cost and the installation degree of difficulty.

Drawings

Fig. 1 is a front view of the present slewing bearing device.

Fig. 2 is a sectional view of the slewing bearing device.

Fig. 3 is a sectional view of the housing in the present slewing bearing device.

Fig. 4 is a schematic structural view of a transmission shaft in the present slewing bearing device.

Fig. 5 is a sectional view of the harmonic reducer in the present slewing bearing device.

In the figure, 1, a housing; 1a, mounting holes; 1b, an annular boss; 1b1, step surface; 1c, a first fixing hole; 1d, fixing holes II; 1e, a fixing part; 2. a drive shaft; 2a, a first shaft part; 2a1, locating holes; 2a2, threaded hole; 2a3, pin holes; 2b, a second shaft part; 2c, connecting a flange; 3. a harmonic speed reducer; 31. a harmonic generator; 32. a flexible gear; 33. a rigid wheel; 4. a servo motor; 5. a support assembly; 51. a thrust bearing; 52. a deep groove ball bearing; 53. a shaft sleeve; 6. connecting the disc; 6a, a positioning part; 7. a set screw; 8. a cylindrical pin; 9. a flat bond; 10. a set screw; 11. fixing a first bolt; 12. sealing the oil cover; 13. and fixing a second bolt.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 5, the slewing bearing device in this embodiment includes a housing 1, the housing 1 is disposed in a cylindrical shape and has a plurality of fixing portions 1e extending outward from the outer periphery thereof, the housing 1 has a mounting hole 1a penetrating the other end at the middle of one end thereof, the housing 1 has a transmission shaft 2 penetrating therethrough at one end thereof and an oil seal cover 12 fixedly fitted over the transmission shaft 2 at the end thereof, the housing 1 has a plurality of first fixing holes 1c formed at one end thereof where the oil seal cover 12 is formed, a plurality of first fixing bolts 11 penetrating therethrough at the oil seal cover 12, end portions of the plurality of first fixing bolts 11 being screwed into the corresponding first fixing holes 1c, the housing 1 has a plurality of second fixing holes 1d formed at the other end thereof and being provided with a harmonic reducer 3 and a servo motor 4, a plurality of second fixing bolts 13 penetrating therethrough at the housing of the harmonic reducer 3 and the housing of the servo motor 4, end portions of the plurality of second fixing bolts 13 being screwed into the corresponding second fixing holes 1d, the harmonic reducer 3 comprises a harmonic generator 31, a flexible gear 32 and a rigid gear 33, an output shaft of the servo motor 4 is connected with the harmonic generator 31 through a flat key 9, the harmonic generator 31 is an HOF type harmonic reducer, a connecting disc 6 fixed at one end of the transmission shaft 2 is arranged in the mounting hole 1a, the connecting disc 6 is fixedly connected with the rigid gear 33 through a positioning screw 10, and a supporting component 5 capable of limiting the position of the transmission shaft 2 in the axial direction and the radial direction is further arranged in the mounting hole 1a of the shell 1.

Further, as shown in fig. 1 to 4, the transmission shaft 2 includes a first shaft portion 2a located in the mounting hole 1a and a second shaft portion 2b located at one end of the first shaft portion 2a, the first shaft portion 2a and the second shaft portion 2b are both arranged in a cylindrical shape, the cross-sectional diameter of the second shaft portion 2b is larger than that of the first shaft portion 2a, the first shaft portion 2a and the second shaft portion 2b are coaxially arranged, one end of the second shaft portion 2b, which is far away from the first shaft portion 2a, extends out of the mounting hole 1a, and is provided with an outwardly extending connecting flange 2c outside the end, the oil seal cover 12 is sleeved on the second shaft portion 2b, the connecting disk 6 is fixed on one end of the first shaft portion 2a, which is far away from the second shaft portion 2b, the support assembly 5 includes a thrust bearing 51, two deep groove ball bearings 52 and a shaft sleeve 53 located between the two deep groove ball bearings 52, the thrust bearing 51, the two deep groove ball bearings 52 and the shaft sleeve 53 are all sleeved on the first shaft portion 2a, the hole wall of the mounting hole 1a is provided with an annular boss 1b extending inwards at a position close to one end of the casing 1 provided with the oil seal cover 12, the inner wall of the annular boss 1b is provided with a step surface 1b1 abutting against one side of the thrust bearing 51, the other side of the thrust bearing 51 abuts against one end of the shaft part II 2b and the shaft part I2 a, the two deep groove ball bearings 52 are respectively positioned at two ends of the shaft sleeve 53, one side of the two far away from the shaft sleeve 53 is respectively abutted against one side of the annular boss 1b far away from the oil seal cover 12 and one side of the connecting disc 6 abutting against the shaft part I2 a.

Further, as shown in fig. 1, 2 and 4, the middle of one end of the first shaft portion 2a, which is far away from the second shaft portion 2b, is provided with an inwardly extending positioning hole 2a1, the edge of the end edge is provided with a plurality of threaded holes 2a2 and a plurality of pin holes 2a3, the middle of one side of the connecting disc 6, which is connected with the first shaft portion 2a, is provided with a positioning part 6a capable of being embedded into the positioning hole 2a1, the number of the threaded holes 2a2 is six, the number of the pin holes 2a3 is two, two pin holes 2a3 and six threaded holes 2a2 are uniformly distributed at intervals around the circumferential direction of the positioning hole 2a1 at one end edge of the first shaft portion 2a, two pin holes 2a3 are respectively arranged at two opposite sides of the positioning hole 2a1, and the connecting disc 6 is provided with two cylindrical pins 8 capable of being embedded into the corresponding pin holes 2a3 and six fixing screws 7 capable of being screwed into the corresponding threaded holes 2a 2.

The servo motor 4 makes the output shaft of the servo motor 4 rotate according to a certain rule through program control so as to drive the harmonic generator 31 to rotate, and the flexible gear 32 is alternately meshed with the rigid gear 33 through teeth in the circumferential direction so as to drive the rigid gear 33 to rotate; the rigid wheel 33 drives the connecting disc 6 to rotate, and the connecting disc 6 drives the transmission shaft 2 to rotate, so that objects mounted on the connecting flange 2c of the transmission shaft 2 can move regularly and be positioned accurately according to requirements.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. The utility model provides a slewing bearing device, includes casing (1), its characterized in that, transmission shaft (2) are worn to be equipped with by the one end of casing (1), the other end of casing (1) set firmly with harmonic speed reducer (3) that transmission shaft (2) link to each other with enable harmonic speed reducer (3) drive transmission shaft (2) circumferential direction's servo motor (4), be equipped with in casing (1) and be used for injecing supporting component (5) of transmission shaft (2) axial and radial position.

2. A slewing bearing device according to claim 1, characterized in that the support assembly (5) comprises a thrust bearing (51) fitted over the drive shaft (2), two deep groove ball bearings (52) and a bushing (53); the middle of one end of the shell (1) is provided with a mounting hole (1a) penetrating the other end, the transmission shaft (2) comprises a first shaft part (2a) positioned in the mounting hole (1a) and a second shaft part (2b) arranged at one end of the first shaft part (2a), the thrust bearing (51), the two deep groove ball bearings (52) and the shaft sleeve (53) are all sleeved on the first shaft part (2a), the hole wall of the mounting hole (1a) is provided with an annular boss (1b) extending inwards, the inner wall of the annular boss (1b) is provided with a step surface (1b1) abutted to one side of the thrust bearing (51), the other side of the thrust bearing (51) is abutted to one end of the second shaft part (2b), the first shaft part (2a) is far away from one end of the second shaft part (2b) and is fixedly provided with a connecting disc (6) connected with the harmonic speed reducer (3), the two deep groove ball bearings (52) are respectively arranged at two ends of the shaft sleeve (53) and are respectively abutted with one side of the annular boss (1b) and the connecting disc (6).

3. The slewing bearing device according to claim 2, characterized in that the first shaft portion (2a) and the second shaft portion (2b) are both provided in a cylindrical shape, and the first shaft portion (2a) has a smaller cross-sectional diameter than the second shaft portion (2b) and is provided coaxially therewith.

4. The slewing bearing device according to claim 3, characterized in that the middle part of one end of the first shaft part (2a) far away from the second shaft part (2b) is provided with an inwardly extending positioning hole (2a1) and the outer edge of the end of the first shaft part (2a) is provided with a plurality of threaded holes (2a2), the middle part of one side of the connecting disc (6) is provided with a positioning part (6a) capable of being embedded into the positioning hole (2a1), and the connecting disc (6) is provided with a plurality of fixing screws (7) capable of being screwed into the corresponding threaded holes (2a 2).

5. The slewing bearing device according to claim 4, characterized in that the shaft portion I (2a) is provided with a plurality of pin holes (2a3) at the outer edge of one end provided with the positioning holes (2a1), and a plurality of cylindrical pins (8) capable of being embedded into the corresponding pin holes (2a3) are arranged on the connecting disc (6) in a penetrating manner.

6. The slewing bearing device according to claim 5, characterized in that the number of the pin holes (2a3) is two, the number of the threaded holes (2a2) is six, the two pin holes (2a3) and the six threaded holes (2a2) are circumferentially spaced around the positioning hole (2a1) at an outer edge of one end of the shaft portion one (2a), and the two pin holes (2a3) are respectively arranged on two opposite sides of the positioning hole (2a 1).

7. The slewing bearing device as claimed in any one of claims 2 to 6, characterized in that the end of the second shaft part (2b) remote from the first shaft part (2a) protrudes out of the mounting hole (1a) and is provided with an outwardly extending connecting flange (2c) on its periphery.

8. The slewing bearing device according to any one of claims 2 to 6, characterized in that the harmonic reducer (3) comprises a harmonic generator (31), a flexible gear (32) and a rigid gear (33), an output shaft of the servo motor (4) is connected with the harmonic generator (31) through a flat key (9), and the rigid gear (33) is fixedly connected with the connecting disc (6) through a positioning screw (10).

9. The slewing bearing device according to any one of claims 2 to 6, wherein the harmonic reducer (3) and the servo motor (4) are located at one end of the housing (1), the end of the housing (1) is provided with a plurality of first fixing holes (1c), a plurality of first fixing bolts (11) capable of being screwed in the corresponding first fixing holes (1c) penetrate through a housing of the harmonic reducer (3) and a housing of the servo motor (4), the other end of the housing (1) is provided with an oil seal cover (12) sleeved on the second shaft part (2b), the end of the housing (1) is provided with a plurality of second fixing holes (1d), and a plurality of second fixing bolts (13) capable of being screwed in the corresponding second fixing holes (1d) penetrate through the oil seal cover (12).

10. The slewing bearing device according to any one of claims 2 to 6, characterized in that the housing (1) is cylindrically arranged, the mounting hole (1a) is located in the middle of the housing (1), and the housing (1) has a plurality of fixing portions (1e) extending outward at its outer periphery.