CN216306555U - External brake for excavator slewing gear - Google Patents
External brake for excavator slewing gear Download PDFInfo
- Publication number
- CN216306555U CN216306555U CN202121315751.4U CN202121315751U CN216306555U CN 216306555 U CN216306555 U CN 216306555U CN 202121315751 U CN202121315751 U CN 202121315751U CN 216306555 U CN216306555 U CN 216306555U
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- brake
- friction plate
- connecting shaft
- flange
- speed reducer
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Abstract
The utility model relates to a brake, in particular to an external brake for an excavator rotation speed reducer. The brake comprises a brake shell, a brake piston, a cylindrical spiral compression spring, a friction plate, a connecting shaft, an inner hexagonal screw, a flange and a pin; the brake shell is connected with the speed reducer assembly and is a brake base body; the flange is connected with the brake shell through a pin and an inner hexagon screw, and the rotary motor is arranged on the flange; one end of the connecting shaft is connected with an output shaft of the rotary motor, and the other end of the connecting shaft is connected with a sun gear of the rotary speed reducer; the friction plate is connected with the brake shell, and the friction plate is connected with the connecting shaft; a cylindrical helical compression spring is disposed between the brake piston and the flange. The brake can realize the connection between the rotary motor without the built-in brake and the rotary speed reducer, and increases the selection range of the rotary motor matched with the rotary speed reducer assembly. The brake has the advantages of compact structure, small volume, high braking reliability, strong expansibility and low maintenance and manufacturing cost.
Description
Technical Field
The utility model relates to a brake, in particular to an external brake for an excavator rotation speed reducer.
Background
The rotary speed reducer is an important component of an excavator, and can be widely applied to various engineering machines, such as: cranes, aerial work vehicles, etc. The rotary speed reducer does not have a braking function, the rotary speed reducer needs to be matched with a rotary motor for use, the motor applied to the rotary speed reducer generally has a built-in brake, but the motor cannot meet the design requirement sometimes due to displacement limitation, and a large-displacement motor without the brake needs to be selected, so that an external brake is urgently needed to be designed to meet the application requirement.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an external brake for a slewing reducer of an excavator, which can meet the connection between a slewing motor and the slewing reducer, thereby increasing the selection range of the slewing motor matched with a slewing reducer assembly.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides an external brake for an excavator slewing reducer, which comprises a brake shell, a brake piston, a cylindrical spiral compression spring, a friction plate, a connecting shaft, an inner hexagon screw, a flange and a pin, wherein the brake piston is arranged on the brake shell;
the brake shell is connected with the speed reducer assembly and is a brake base body; the flange is connected with the brake shell through a pin and an inner hexagon screw, and the rotary motor is arranged on the flange; one end of the connecting shaft is connected with an output shaft of the rotary motor, and the other end of the connecting shaft is connected with a sun gear of the rotary speed reducer; the friction plate is connected with the brake shell, and the friction plate is connected with the connecting shaft; a cylindrical helical compression spring is disposed between the brake piston and the flange.
Furthermore, the connecting shaft is matched with the upper end face of the sun gear of the rotary speed reducer through an elastic retainer ring to realize axial positioning of the connecting shaft.
Furthermore, the friction plate is provided with an ear plate which is matched with the brake shell, and the friction plate can move up and down along the shaft in the brake shell and cannot rotate relatively around the shaft.
Furthermore, the friction plate is provided with an internal spline, one end of the connecting shaft is provided with the internal spline, and the other end of the connecting shaft is provided with an external spline; the friction plate is connected and matched with the outer spline on the connecting shaft through the inner spline, and the friction plate can move up and down along the axial direction of the connecting shaft and cannot rotate around the shaft relatively.
Furthermore, two sealing grooves are formed in the brake piston, and a check ring and an O-shaped ring are respectively arranged on each sealing groove; a sealing cavity is formed between the brake piston and the brake shell, and an oil port for releasing brake vacancy is formed in the sealing cavity.
Further, the brake also comprises a backing plate, and the braking torque performance parameter of the brake is adjusted by increasing or decreasing the number of the backing plates.
Compared with the prior art, the utility model has the following beneficial effects:
the brake can realize the connection between the rotary motor without the built-in brake and the rotary speed reducer, and increases the selection range of the rotary motor matched with the rotary speed reducer assembly.
The brake disclosed by the utility model has the advantages of compact structure, small volume, high braking reliability, strong expansibility and low maintenance and manufacturing cost.
Drawings
Fig. 1 is a schematic structural diagram of an external brake for an excavator slewing gear reducer according to embodiment 1 of the present invention.
The brake comprises a brake shell 1, a brake piston 2, a cylindrical helical compression spring 3, a friction plate 4, a friction plate 5, a backing plate 6, a connecting shaft 7, an elastic retainer ring 8, a retainer ring I9, a retainer ring I10, an O-shaped ring II 11, a retainer ring II 12, a hexagon socket head cap screw 13, a flange 14 and a pin 15.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the utility model as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the stated features, steps, operations, and/or combinations thereof, unless the context clearly indicates otherwise.
In order to make the technical solutions of the present invention more clearly understood by those skilled in the art, the technical solutions of the present invention will be described in detail below with reference to specific embodiments.
Example 1
As shown in fig. 1, the external brake for the excavator slewing gear reducer is composed of a brake housing 1, a brake piston 2, a cylindrical helical compression spring 3, a friction plate 4, a friction plate 5, a backing plate 6, a connecting shaft 7, an elastic retainer ring 8, a retainer ring I9, an O-shaped ring I10, an O-shaped ring II 11, a retainer ring II 12, a hexagon socket head cap screw 13, a flange 14 and a pin 15.
Brake casing 1 is connected with the speed reducer assembly, and for the stopper base member, flange 14 is connected with brake casing 1 through round pin 15 and hexagon socket head cap screw 13, and the rotary motor is installed on flange 14, and 7 one end internal splines of connecting axle and rotary motor output shaft external splines are connected, and the external splines of the other end is connected with the internal splines of rotary speed reducer sun gear, and 7 axial positioning of connecting axle is realized through the cooperation of circlip 8 and rotary speed reducer sun gear up end.
The friction plate 4 is provided with an ear plate which is matched with the brake shell 1, the friction plate 4 can move up and down along the axial direction in the brake shell 1 and cannot rotate relatively around the shaft, the friction plate 5 is provided with an internal spline which is connected and matched with an external spline of the connecting shaft 7, and the friction plate 5 can move up and down along the axial direction of the connecting shaft 7 and cannot rotate relatively around the shaft. The brake piston 2 is matched with the brake shell 1 to move up and down, two sealing grooves are designed on the brake piston 2 and are respectively provided with a first retainer ring 9, a first O-shaped ring 10, a second O-shaped ring 11 and a second retainer ring 12, a sealing cavity is formed between the brake piston 2 and the brake shell 1 and is designed with a brake control releasing oil port SH, a plurality of cylindrical compression springs 3 are arranged on the upper circumference of the brake piston 2, the cylindrical compression springs 3 are arranged between the brake piston 2 and a flange 14, the brake piston 2 compresses a friction plate 4 under the action of the pre-pressure of the cylindrical compression springs 3, the brake piston 2 tightly presses the friction plate 4 and the friction plate 5 under the condition that the brake control releasing oil port SH is not communicated with control oil, the friction plate 4 and the friction plate 5 cannot rotate relatively before the designed torque is not reached, so that the connecting shaft 7 cannot move relative to the brake shell 1, the purpose of braking is achieved.
The brake is further provided with backing plates 6, the braking torque performance parameters of the brake can be adjusted by increasing or reducing the number of the backing plates, and the brake is suitable for the design requirements of more models without changing the overall dimension of the brake.
All parts and parts which are not discussed in the utility model and the connection mode of all parts and parts in the application belong to the known technology in the technical field, and are not described again. Such as welding, threaded connections, etc.
In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Claims (6)
1. An external brake for an excavator rotation speed reducer is characterized by comprising a brake shell, a brake piston, a cylindrical spiral compression spring, a friction plate, a connecting shaft, an inner hexagon screw, a flange and a pin;
the brake shell is connected with the speed reducer assembly and is a brake base body; the flange is connected with the brake shell through a pin and an inner hexagon screw, and the rotary motor is arranged on the flange; one end of the connecting shaft is connected with an output shaft of the rotary motor, and the other end of the connecting shaft is connected with a sun gear of the rotary speed reducer; the friction plate is connected with the brake shell, and the friction plate is connected with the connecting shaft; a cylindrical helical compression spring is disposed between the brake piston and the flange.
2. The external brake for the excavator slewing gear reducer as defined in claim 1, wherein the connecting shaft is axially positioned by matching the upper end surface of the sun gear of the slewing gear reducer with an elastic retainer ring.
3. The outboard brake for a slewing gear of an excavator according to claim 1, wherein the friction plate is provided with an ear plate to engage with the brake housing, and the friction plate is movable up and down along the shaft in the brake housing and is not rotatable relative to the shaft.
4. The external brake for the excavator slewing gear reducer as claimed in claim 1, wherein the friction plate is provided with an internal spline, one end of the connecting shaft is provided with an internal spline, and the other end is provided with an external spline; the friction plate is connected and matched with the outer spline on the connecting shaft through the inner spline, and the friction plate can move up and down along the axial direction of the connecting shaft and cannot rotate around the shaft relatively.
5. The external brake for the excavator slewing reducer as claimed in claim 1, wherein the brake piston is provided with two seal grooves, and each seal groove is provided with a check ring and an O-shaped ring; a sealing cavity is formed between the brake piston and the brake shell, and an oil port for releasing brake vacancy is formed in the sealing cavity.
6. The outboard brake for a slewing gear of an excavator as claimed in claim 1, wherein the brake further comprises pads, and the brake torque performance parameter of the brake is adjusted by increasing or decreasing the number of pads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121315751.4U CN216306555U (en) | 2021-06-11 | 2021-06-11 | External brake for excavator slewing gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121315751.4U CN216306555U (en) | 2021-06-11 | 2021-06-11 | External brake for excavator slewing gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216306555U true CN216306555U (en) | 2022-04-15 |
Family
ID=81081125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121315751.4U Active CN216306555U (en) | 2021-06-11 | 2021-06-11 | External brake for excavator slewing gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216306555U (en) |
-
2021
- 2021-06-11 CN CN202121315751.4U patent/CN216306555U/en active Active
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