Straight tooth type rotary drive with friction plate brake

Abstract

The utility model discloses a straight tooth type slewing drive with friction plate brake, which comprises a shell, a motor and friction plates, a slewing bearing and a pinion are mounted in the shell, the slewing bearing is meshed with the pinion, a transmission shaft is mounted on the slewing bearing, a sealing cover is mounted at the side end of the shell, the transmission shaft is rotatably connected with the sealing cover, and the motor is connected with the friction plates. A friction ring is fixedly connected to the transmission shaft, a fixing seat is installed on the sealing cover, a sliding groove is formed in the fixing seat, a sliding seat is slidably arranged in the sliding groove, a first hydraulic cylinder is installed on the fixing seat, a telescopic rod of the first hydraulic cylinder is fixedly connected with the side end of the sliding seat, and two sliding columns are slidably arranged on the sliding seat. The transmission shaft and the slewing bearing can be braked conveniently, it is avoided that due to the inertia effect of the slewing bearing, large acting force exists between the slewing bearing and teeth of the small gear, the slewing bearing and the teeth of the small gear are prevented from being damaged, and the service life of the slewing bearing and the service life of the small gear are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a straight tooth type rotary drive technology field more specifically, it relates to a straight tooth type rotary drive with friction plate brake. BACKGROUND

[0002] The existing straight tooth type rotary drive is the rotary support extension product, and has been widely applied in the engineering machinery, light industry machinery, metallurgical machinery, medical machinery, industrial robot, automation equipment and other industries. The straight tooth type rotary transmission is high in efficiency, fast in rotating speed, simple in structure, convenient to install and maintain. However, the straight tooth type rotary drive has no self-locking property, and the rotary support will rotate by a certain angle when stopping. Especially in the case of emergency stop, the impact force of the gear is very large, and sometimes the output shaft of the motor or the motor is broken.

[0003] Through the retrieval, the utility model discloses a kind of straight tooth type rotary drive with friction plate brake, rotary support is set in the inside of shell, pinion is fixed in the shell respectively through big bearing and small bearing at both ends and pinion is engaged with rotary support, pinion is connected with the output shaft of motor, motor is connected with shell;The end of small bearing of pinion is connected with friction brake;Fixed friction plate seat is connected with pinion, fixed friction plate seat is equipped with fixed friction plate, cylinder bottom end is connected with cylinder cover, piston is equipped in the inside lower part of cylinder, spring is equipped between the bottom surface of piston and the top surface of cylinder cover, dynamic friction plate is equipped on the inside wall upper part of cylinder, dynamic friction plate and fixed friction plate are staggered and spaced, oil port is formed in the lower part of the side wall of cylinder, cylinder is connected with shell.

[0004] When emergency stop, pinion is locked by the friction force of friction plate, the rotation angle of rotary support when stopping is reduced by braking pinion, the impact force of rotary support on motor output shaft when emergency stop is reduced, although it is braked to pinion by friction plate, in the process of braking emergency stop, rotary support still rotates due to inertia, there is still force between the teeth of rotary support and pinion, which can cause damage to the teeth of rotary support and pinion, and reduce its service life. UTILITY MODEL CONTENTS

[0005] (I) technical problem solved

[0006] In view of the problems existing in the prior art, the utility model provides a straight tooth type rotary drive with friction plate brake to solve the technical problems mentioned in the background art.

[0007] (II) technical scheme

[0008] In order to achieve the above object, the utility model provides the following technical scheme: A straight tooth type rotary drive with friction plate brake, including casing, motor and friction plate, the inside of casing is installed with slewing bearing and pinion, slewing bearing is engaged with pinion, transmission shaft is installed on slewing bearing, the side end of casing is installed with sealing cover, transmission shaft is rotatably connected with sealing cover, transmission shaft is fixedly connected with friction ring, the fixed base is installed on sealing cover, the sliding slot is arranged on fixed base, the sliding seat is arranged in the inside of sliding slot, the first hydraulic cylinder is installed on fixed base, the side end of telescopic rod of first hydraulic cylinder is fixedly connected with sliding seat, two slide columns are arranged on sliding seat, the side end of two slide columns is fixedly connected with connecting seat, the friction plate is installed on connecting seat, two springs are arranged between connecting seat and sliding seat, two springs are respectively set in the outside of two slide columns, the motor is connected with pinion through transmission mechanism, it is convenient for the brake of transmission shaft and slewing bearing, avoids the existence of greater force between the teeth of slewing bearing and pinion due to the inertial effect of slewing bearing, avoids the damage of the teeth of slewing bearing and pinion, guarantees the service life of slewing bearing and pinion.

[0009] The utility model further sets up, transmission mechanism includes sealing cover, sealing cover is installed through a plurality of first screw in the side end of casing, motor is installed in the side end of sealing cover, and the output end of motor extends to the inside of sealing cover and is fixedly connected with square column, the outside of square column is slidably provided with sleeve, and the side end of sleeve is fixedly connected with first mounting seat, the one end of the rotating shaft on pinion extends to the inside of sealing cover and is fixedly connected with second mounting seat, clutch disc and clutch disc are installed on first mounting seat and second mounting seat respectively, convenient for motor and pinion are separated or cooperate.

[0010] The utility model further sets up, the outside of first mounting seat is rotatably connected with connecting sleeve, two second hydraulic cylinders are installed on sealing cover, and the side end of telescopic rod of two second hydraulic cylinders is fixedly connected with connecting sleeve, convenient for pushing connecting sleeve, first mounting seat and corresponding clutch disc moves.

[0011] The utility model further sets up, and the side end of two slide columns is fixedly connected with limit board, and the slide column is limited.

[0012] The utility model further sets up, and two fixed strips are fixedly connected on fixed base, and two fixed strips are connected with sealing cover through second screw, convenient for the dismounting of fixed base.

[0013] The utility model further sets up, and first sealing pad is arranged between sealing cover and casing, guarantees the sealing property of the connection between sealing cover and casing.

[0014] The utility model further sets up, be provided with second sealing gasket between the sealing cover and the shell, guarantee the sealing property of connecting between the sealing cover and the shell.

[0015] The utility model further sets up, the clutch disc and clutch disc are connected with first mounting base and second mounting base respectively through a plurality of third screws, and it is convenient to dismount and replace clutch disc.

[0016] (Three) beneficial effects

[0017] Compared with the prior art, the utility model provides a straight tooth type rotary drive with friction plate brake, has the following beneficial effects:

[0018] 1, in the process of braking emergency stop, push the slide through the first hydraulic cylinder, spring, connecting seat and friction plate move, make the friction plate and friction ring contact, pass through the cooperation of friction plate and friction ring to transmission shaft and slewing bearing brake, avoid the inertia effect of slewing bearing to cause the existence of greater force between slewing bearing and pinion tooth, avoid slewing bearing and pinion tooth to be damaged, guarantee slewing bearing and pinion service life.

[0019] 2, when the first hydraulic cylinder pushes the slide, spring, connecting seat and friction plate move, when the friction plate and friction ring contact, avoid the hard contact of friction plate and friction ring through the action of spring, avoid the lockup of friction ring, transmission shaft and slewing bearing.

[0020] 3, in the process of braking emergency stop, pull the connecting sleeve, first mounting base and clutch disc move through the second hydraulic cylinder, make clutch disc and clutch disc separate, thereby disconnect the transmission cooperation between motor and pinion, avoid the rotation of slewing bearing and pinion to the output shaft of motor and produce greater impact force, avoid the output shaft of motor and break. ACCURACY OF DRAWINGS

[0021] Figure 1 It is the positive structure schematic view of a straight tooth type rotary drive with friction plate brake in the utility model;

[0022] Figure 2 It is the structure schematic view of slewing bearing, transmission shaft, pinion and shell structure connection in the utility model;

[0023] Figure 3 It is the structure schematic view of fixed seat, first hydraulic cylinder, connecting seat and friction plate joint cooperation in the utility model;

[0024] Figure 4 It is the structure schematic view of first hydraulic cylinder, slide, two slide columns, two springs, connecting seat and friction plate joint cooperation in the utility model;

[0025] Figure 5 It is partial section structure schematic view of the shell, the motor and the transmission mechanism connection in the utility model,

[0026] Figure 6 It is structure schematic view of the shell, the second mounting seat and the clutch disc cooperation in the utility model,

[0027] Figure 7 It is structure schematic view of the square column, the sleeve, the first mounting seat and the clutch disc connection in the utility model.

[0028] In the drawing: 1, shell;2, motor;3, friction plate;4, slewing bearing;5, pinion;6, transmission shaft;7, sealing cover;8, friction ring;9, fixed seat;10, sliding groove;11, sliding seat;12, first hydraulic cylinder;13, sliding column;14, connecting seat;15, spring;16, sealing cover;17, first screw;18, square column;19, sleeve;20, first mounting seat;21, second mounting seat;22, clutch disc;23, connecting sleeve;24, second hydraulic cylinder;25, limiting plate;26, fixed strip;27, second screw;28, first sealing gasket;29, second sealing gasket;30, third screw;31, clutch disc. DETAILED DESCRIPTION

[0029] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0031] In the present application, unless otherwise specified, the directions such as "up, down" are generally with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity direction;Similarly, for the convenience of understanding and description, "left, right" is generally with respect to the left and right shown in the drawings;"Inside, outside" refers to the inside and outside of the contour of each component itself, but the above direction words are not used to limit the present application.

[0032] Please refer to Figures 1-7The utility model provides a straight tooth type rotary drive with friction plate brake, including casing 1, motor 2 and friction plate 3, the inside installation of casing 1 has rotary support 4 and pinion 5, and rotary support 4 is engaged with pinion 5, and transmission shaft 6 is installed on rotary support 4, and the side end of casing 1 is installed with sealing cover 7, and first sealing pad 28 is arranged between sealing cover 7 and casing 1, guarantees the sealing property of the connection between sealing cover 7 and casing 1, and transmission shaft 6 is rotatably connected with sealing cover 7, and friction ring 8 is fixedly connected on transmission shaft 6, and fixed seat 9 is installed on sealing cover 7, and two fixed strips 26 are fixedly connected on fixed seat 9, and two fixed strips 26 are connected with sealing cover 7 through second screw 27, and it is convenient to dismount and assemble fixed seat 9, and sliding slot 10 is arranged on fixed seat 9, and sliding seat 11 is slidably arranged in the inside of sliding slot 10, and first hydraulic cylinder 12 is installed on fixed seat 9, and the telescopic rod of first hydraulic cylinder 12 is fixedly connected with the side end of sliding seat 11, and two slide columns 13 are slidably arranged on sliding seat 11, and the side end of two slide columns 13 is fixedly connected with limiting plate 25, and slide column 13 is limited, and the side end of two slide columns 13 is fixedly connected with connecting seat 14, and friction plate 3 is installed on connecting seat 14, and two springs 15 are arranged between connecting seat 14 and sliding seat 11, and two springs 15 are respectively sleeved on the outside of two slide columns 13, and motor 2 is connected with pinion 5 through transmission mechanism.

[0033] Specifically, in the process of braking emergency stop, sliding seat 11, spring 15, connecting seat 14 and friction plate 3 are moved by first hydraulic cylinder 12, so that friction plate 3 contacts with friction ring 8, and transmission shaft 6 and rotary support 4 are braked by the cooperation of friction plate 3 and friction ring 8, so as to avoid that the inertia of rotary support 4 causes a large force between rotary support 4 and the teeth of pinion 5, avoid that the teeth of rotary support 4 and pinion 5 are damaged, and ensure the service life of rotary support 4 and pinion 5, when sliding seat 11, spring 15, connecting seat 14 and friction plate 3 are moved by first hydraulic cylinder 12, when friction plate 3 contacts with friction ring 8, the hard contact of friction plate 3 and friction ring 8 is avoided by the action of spring 15, and the locking of friction ring 8, transmission shaft 6 and rotary support 4 is avoided.

[0034] Please refer to Figures 5-7The transmission mechanism comprises a sealing cover 16 mounted at the side end of the shell 1 through a plurality of first screws 17, a second sealing gasket 29 arranged between the sealing cover 16 and the shell 1 to ensure the sealing connection between the sealing cover 16 and the shell 1, a motor 2 mounted at the side end of the sealing cover 16, an output end of the motor 2 extending into the sealing cover 16 and fixedly connected with a square column 18, a sleeve 19 slidingly arranged outside the square column 18, a first mounting seat 20 fixedly connected with the side end of the sleeve 19, a second mounting seat 21 fixedly connected with one end of the rotating shaft of the pinion 5 extending into the sealing cover 16, a clutch plate 22 and a clutch disc 31 respectively mounted on the first mounting seat 20 and the second mounting seat 21, so as to facilitate the separation or cooperation of the motor 2 and the pinion 5, the clutch plate 22 and the clutch disc 31 connected with the first mounting seat 20 and the second mounting seat 21 through a plurality of third screws 30, so as to facilitate the disassembly and replacement of the clutch plate 22, and the connection sleeve 23 rotatably connected with the outside of the first mounting seat 20, two second hydraulic cylinders 24 mounted on the sealing cover 16, and the side end of the connecting sleeve 23 fixedly connected with the telescopic rods of the two second hydraulic cylinders 24, so as to facilitate the movement of the connecting sleeve 23, the first mounting seat 20 and the corresponding clutch plate 22.

[0035] Specifically, in the process of braking and emergency stop, the connecting sleeve 23, the first mounting seat 20 and the clutch plate 22 are pulled by the second hydraulic cylinder 24 to move, so that the clutch plate 22 is separated from the clutch disc 31, thereby disconnecting the transmission cooperation between the motor 2 and the pinion 5, avoiding the generation of a large impact force on the output shaft of the motor 2 due to the rotation of the slewing bearing 4 and the pinion 5, and avoiding the breakage of the output shaft of the motor 2.

[0036] In summary, when the overall device is in use:

[0037] The slide 11 is pulled by the first hydraulic cylinder 12 to move away from the transmission shaft 6, the slide 11 pulls the two limiting plates 25, the slide column 13, the connecting seat 14 and the friction plate 3 to move, so that the friction plate 3 is separated from the friction ring 8, then the connecting sleeve 23, the first mounting seat 20 and the clutch plate 22 are pushed by the second hydraulic cylinder 24 to move, so that the clutch plate 22 cooperates with the clutch disc 31, the square column 18, the sleeve 19, the first mounting seat 20, the clutch plate 22, the clutch disc 31, the second mounting seat 21 and the pinion 5 are rotated by the motor 2, the pinion 5 drives the slewing bearing 4 and the transmission shaft 6 to rotate, when braking and emergency stop, the connecting sleeve 23, the first mounting seat 20 and the clutch plate 22 are pulled by the second hydraulic cylinder 24 to move, so that the clutch plate 22 is separated from the clutch disc 31, then the slide 11 is pushed by the first hydraulic cylinder 12 to move, the connecting seat 14 and the friction plate 3 are pushed by the slide 11 through the spring 15 to move, and the transmission shaft 6 and the slewing bearing 4 are braked through the cooperation of the friction plate 3 and the friction ring 8.

[0038] In all the above-mentioned solutions, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection or other known connection mode, which will not be described here. In the above, whenever there is a fixed connection, welding is preferred. Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A spur gear rotary drive with frictional brake, comprising a housing (1), a motor (2) and a frictional plate (3), inside the housing (1) a rotary bearing (4) and a pinion (5) are mounted, the rotary bearing (4) is in engagement with the pinion (5), characterized in that: The slewing bearing (4) is provided with a transmission shaft (6), the side end of the shell (1) is provided with a sealing cover (7), the transmission shaft (6) is rotatably connected with the sealing cover (7), the transmission shaft (6) is fixedly connected with a friction ring (8), the sealing cover (7) is provided with a fixed seat (9), the fixed seat (9) is provided with a sliding groove (10), the sliding groove (10) is slidably provided with a sliding seat (11), the fixed seat (9) is provided with a first hydraulic cylinder (12), the telescopic rod of the first hydraulic cylinder (12) is fixedly connected with the side end of the sliding seat (11), the sliding seat (11) is slidably provided with two slide columns (13), the side end of the two slide columns (13) is fixedly connected with a connecting seat (14), the friction plate (3) is arranged on the connecting seat (14), the connecting seat (14) and the sliding seat (11) are provided with two springs (15), the two springs (15) are respectively sleeved on the outer sides of the two slide columns (13), and the motor (2) is connected with the pinion (5) through a transmission mechanism.

2. A spur gear rotary drive with frictional plate brake according to claim 1, characterized in that The transmission mechanism comprises a sealing cover (16), the sealing cover (16) is arranged on the side end of the shell (1) through a plurality of first screws (17), the motor (2) is arranged on the side end of the sealing cover (16), the output end of the motor (2) extends into the sealing cover (16) and is fixedly connected with a square column (18), the outer side of the square column (18) is slidably provided with a sleeve (19), the side end of the sleeve (19) is fixedly connected with a first mounting seat (20), the rotating shaft of the pinion (5) is fixedly connected with a second mounting seat (21) at one end extending into the sealing cover (16), and the first mounting seat (20) and the second mounting seat (21) are respectively provided with a clutch plate (22) and a clutch disc (31).

3. A spur gear rotary drive with frictional plate brake according to claim 2, characterized in that The outer side of the first mounting seat (20) is rotatably connected with a connecting sleeve (23), the sealing cover (16) is provided with two second hydraulic cylinders (24), and the telescopic rods of the two second hydraulic cylinders (24) are fixedly connected with the side end of the connecting sleeve (23).

4. A spur gear rotary drive with frictional plate brake according to claim 1, characterized in that The side end of each of the two slide columns (13) is fixedly connected with a limiting plate (25).

5. A spur gear rotary drive with frictional plate brake according to claim 1, characterized in that The fixed seat (9) is fixedly connected with two fixed strips (26), and the two fixed strips (26) are connected with the sealing cover (7) through second screws (27).

6. A spur gear rotary drive with frictional plate brake according to claim 1, characterized in that The first sealing gasket (28) is arranged between the sealing cover (7) and the shell (1).

7. A spur gear rotary drive with frictional plate brake according to claim 2, characterized in that The second sealing gasket (29) is arranged between the sealing cover (16) and the shell (1).

8. A spur gear rotary drive with frictional plate brake according to claim 2, characterized in that The clutch plate (22) and the clutch disc (31) are connected with the first mounting seat (20) and the second mounting seat (21) respectively through a plurality of third screws (30).

Images