Cycloid hydraulic motor rear cover structure integrated with clutch function

Abstract

The utility model relates to the technical field of hydraulic motors, in particular to a cycloid hydraulic motor rear cover structure integrated with a clutch function, which can ensure the sealing performance of a piston and facilitate the disassembly of the piston, and comprises a rear cover connected with a motor body, a piston cavity is formed in the motor body, a piston is installed in the piston cavity, an annular groove is formed in the outer wall of the piston, a sealing ring is installed in the annular groove, the motor is characterized in that at least two threaded counter bores are formed in the end face of one side, facing the motor body, of the piston, and the sealing ring is a Glyd ring formed by splicing a rubber O-shaped ring and a polytetrafluoroethylene ring.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic motor technical field, concretely is a kind of cycloidal hydraulic motor rear cover structure of integrated clutch function. BACKGROUND

[0002] Cycloidal hydraulic motor is a small-sized low-speed large-torque hydraulic motor of one-axis flow insertion gear fixed-rotor pair, it has the advantages such as small volume, light weight, wide speed range.In some cycloidal hydraulic motor, it will integrate the collector function, such as the patent with the public number CN 221957721 U, the rear end of the motor's rotating stator is connected with clutch oil pan, the rear end of clutch oil pan is provided with clutch housing (i.e. rear cover), piston is arranged in the cavity of clutch housing, sealing ring is arranged between piston and the inner wall of clutch housing, oil port is formed in clutch housing, piston is moved to realize clutch function by high-pressure oil, in the above structure, there is sealing ring between piston and the inner wall of clutch housing, piston is difficult to disassemble, and sealing ring is common O-ring, and the sealing effect is general. SUMMARY

[0003] To solve the above technical problems, the utility model provides a kind of cycloidal hydraulic motor rear cover structure of integrated clutch function, it can ensure the piston sealing property and facilitate the disassembly of piston.

[0004] Its technical scheme is as follows: a kind of cycloidal hydraulic motor rear cover structure of integrated clutch function, it includes the rear cover of connecting motor body, the piston cavity is enclosed between the balance disc of the rear cover and the motor body, piston is installed in the piston cavity, annular groove is formed in the outer wall of the piston, sealing ring is installed in the annular groove, it is characterized in that, at least two threaded holes are formed in the side end face of the piston towards the motor body, the sealing ring is Gley circle that rubber O-ring and polytetrafluoroethylene ring are spliced into.

[0005] It is further characterized in that, the upper portion of the rear cover is provided with inclined surface on both sides.

[0006] After the utility model is adopted, when piston needs to be repaired when problem occurs, after rear cover is removed, bolt is screwed into the threaded hole of piston, lifting point is provided for piston, piston can be conveniently taken out from the rear cover, and sealing ring adopts two-layer Gley circle, and good sealing property is formed. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 It is structure schematic view of the utility model;

[0008] Figure 2 It is left view of rear cover;

[0009] Figure 3 It is right view of piston. DETAILED DESCRIPTION

[0010] See Figure 1 、 Figure 2 、 Figure 3 As shown in the figure, a cycloid hydraulic motor rear cover structure with integrated clutch function includes a rear cover 2 connected to the motor body 1, a piston cavity 4 is formed between the rear cover 2 and the balance disc 3 of the motor body 1, a piston 5 is installed in the piston cavity 4, an annular groove is formed on the outer wall of the piston 5, a sealing ring 6 is installed in the annular groove, the sealing ring 6 is a Gley ring spliced by rubber O-ring and polytetrafluoroethylene ring, which can play a good sealing effect, two threaded holes 7 are formed on the side end face of the piston 5 facing the motor body 1, when maintenance is needed, the bolts can be screwed into the threaded holes 7, only the bolts need to be pulled to conveniently take out the piston 5 for maintenance; the upper two sides of the rear cover 2 are provided with inclined surfaces 8, and an oil port 11 can be formed on the inclined surfaces 8, improving the versatility of the product.

[0011] When the motor needs to work normally, the oil port 7 on the rear cover 2 is connected to the pressure oil, so that the piston 5 presses the balance disc 3, and the through hole 9 on the balance disc 3 is sealed, the through hole 9 is respectively connected to the cavity on the rotating stator 10, forming a flow distribution function, the motor works normally, and the output rotation speed and torque are obtained.

[0012] When the oil port on the rear cover 2 is not connected to the pressure oil, the piston 5 and the balance disc 3 are separated, the cavity on the rotating stator 10 and the through hole 9 on the balance disc 2 are connected to each other, so that the inlet and outlet ports of the motor are connected, the motor can be passively rotated under the action of external force, forming a clutch function.

Claims

1. A structure of a trochoidal hydraulic motor rear cover with integrated clutch function, comprising a rear cover connected to a motor body, a piston cavity being formed between the rear cover and a balance disc of the motor body, a piston being installed in the piston cavity, an annular groove being formed in an outer wall of the piston, and a sealing ring being installed in the annular groove, characterized in that, The piston is provided with at least two threaded holes on the side end face of the motor body, and the sealing ring is a Gleason ring formed by splicing rubber O ring and polytetrafluoroethylene ring.

2. The structure of the roller hydraulic motor rear cover with integrated clutch function according to claim 1, characterized in that, The upper portion of the rear cover is provided with inclined surfaces on both sides.

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