CN218927868U

CN218927868U - Hydraulic driving joint

Info

Publication number: CN218927868U
Application number: CN202320237610.8U
Authority: CN
Inventors: 谢立夏; 谢雨齐
Original assignee: Chongqing Vocational Institute of Engineering
Current assignee: Chongqing Vocational Institute of Engineering
Priority date: 2023-02-17
Filing date: 2023-02-17
Publication date: 2023-04-28
Anticipated expiration: 2033-02-17

Abstract

The utility model provides a hydraulic driving joint, which comprises a blocking cover, a mechanical seal, a fixing screw, a compression spring, an annular extrusion piece, a rubber sealing ring, a shaft sealing check ring and an O-shaped sealing ring, wherein the O-shaped sealing ring is symmetrically embedded in the left end face and the right end face of a connecting shell, the rubber sealing ring is symmetrically arranged in the left end face and the right end face of the connecting shell, the annular extrusion piece is attached to the left end face of the rubber sealing ring, the compression spring is clamped on the left end face of the annular extrusion piece, the shaft sealing check ring is embedded in the left end face of a butt joint seat, the fixing screw is symmetrically inserted in the upper side, the lower side, the front side and the rear side of the inside of the butt joint seat, the blocking cover is embedded in the right end face of the butt joint seat, and the blocking cover Zuo Duanmian is attached to the mechanical seal.

Description

Hydraulic driving joint

Technical Field

The utility model relates to a hydraulic drive joint, and belongs to the technical field of hydraulic drive joints.

Background

With the rapid development of industrial technology, industrial robots are widely applied in the industries of assembly, welding, transportation and the like, the automation level of industrial production is greatly improved, human beings are liberated from repetitive labor or extremely severe working environments, and hydraulic drive joints are important components of the industrial robots.

The chinese patent No. CN216781875U proposes an industrial robot hydraulic driving joint, while the sealing of the front and rear outer sides can be ensured by the rear sealing block and the front sealing block, so as to ensure the tightness of the whole device, the rear sealing block and the front sealing block will deform after a period of actual use, so that the tightness of the rear sealing block and the front sealing block is reduced, and the tightness between the housing and the fixing seat and the flange cover is affected, and a hydraulic driving joint is needed to solve the above-mentioned problems.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide a hydraulic driving joint so as to solve the problems in the background art.

In order to achieve the above object, the present utility model is realized by the following technical scheme: the utility model provides a hydraulic drive joint, includes transmission shaft, butt joint seat, coupling housing, fixing base and seal assembly, the fixing base is installed to coupling housing left end face, the butt joint seat is installed to coupling housing right-hand member face, coupling housing left and right sides terminal surface symmetry is provided with seal assembly, the inside transmission shaft that is provided with of butt joint seat, seal assembly includes stop lid, mechanical seal, fixing screw, compression spring, annular extrusion piece, rubber seal ring, sealing ring and O type sealing washer for the axle, coupling housing left and right sides terminal surface symmetry inlays and is equipped with O type sealing washer, coupling housing left and right sides terminal surface symmetry is provided with rubber seal ring, rubber seal ring left end face laminating has annular extrusion piece, annular extrusion piece left end face card is equipped with compression spring, butt joint seat left end face inlays and is equipped with sealing ring for the axle, the inside upper and lower both sides of butt joint seat and front and back both sides symmetry are interluded and are provided with fixing screw, the inlaying of butt joint seat right end face is equipped with the stop lid, the laminating of stop lid Zuo Duanmian has mechanical seal.

Further, two groups of O-shaped sealing rings are embedded, the specifications of the two groups of O-shaped sealing rings are the same, the two groups of rubber sealing rings are provided, the specifications of the two groups of rubber sealing rings are the same, and the rubber sealing rings are made of ethylene propylene diene monomer rubber.

Further, the laminating of annular extrusion piece has two sets of, and two sets of annular extrusion piece specifications are the same, compression spring clamps have a plurality of, and a plurality of compression spring specifications are the same, the ring channel has all been seted up on inside right side of fixing base and the inside left side of butt joint seat, and ring channel and annular extrusion piece phase-match.

Further, the locating key groove is formed in the right side of the upper end face of the transmission shaft, the rotary blades are arranged on the left side of the annular side face of the transmission shaft and are connected with the transmission shaft in a welding mode, the follow-up disc is arranged on the left side of the annular side face of the transmission shaft and is connected with the transmission shaft in a welding mode.

Further, the front side and the rear side of the upper end surface of the connecting shell are symmetrically provided with oil nozzles, an annular oil cavity is formed in the connecting shell and matched with the rotating blades, and the oil nozzles are communicated with the annular oil cavity.

Further, a first mounting flange is welded on the left side of the annular side face of the fixing seat, and a second mounting flange is welded on the right side of the annular side face of the butt joint seat.

Further, four fixing screws are inserted, the specifications of the four fixing screws are the same, the right ends of the four fixing screws are all provided with inner hexagonal caps, and the left sides of the annular side faces of the four fixing screws are all meshed with anti-loosening nuts.

The utility model has the beneficial effects that: according to the hydraulic driving joint, the mechanical seal, the compression springs, the annular extrusion sheets, the rubber sealing rings, the shaft sealing check ring and the O-shaped sealing rings are added, the sealing performance between the connecting shell and the fixing seat as well as between the connecting shell and the butt seat is better through embedding the two groups of O-shaped sealing rings, the sealing performance between the connecting shell and the fixing seat as well as between the connecting shell and the butt seat is further improved through embedding the two groups of O-shaped sealing rings, the plurality of compression springs apply extrusion force to the two groups of annular extrusion sheets, so that the two groups of annular extrusion sheets extrude the two groups of rubber sealing rings, the sealing capacity of the rubber sealing rings is improved, the sealing performance between the transmission shaft and the butt seat is better through embedding the mechanical seal, and the sealing performance between the follow-up disc and the butt seat is better when the shaft sealing check ring is used, and the sealing performance of the joint is improved by 37% through improvement.

Drawings

Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

FIG. 1 is a schematic view of a hydraulic drive joint according to the present utility model;

FIG. 2 is an elevational cross-sectional view of a seal assembly in a hydraulically actuated joint of the present utility model;

FIG. 3 is a top cross-sectional view of a seal assembly in a hydraulically actuated joint of the present utility model;

FIG. 4 is a right side cross-sectional view of a coupling housing in a hydraulically actuated joint according to the present utility model;

FIG. 5 is an enlarged view of a portion of FIG. 2;

in the figure: 1-transmission shaft, 11-location keyway, 12-rotating vane, 13-follower, 2-butt seat, 21-second mounting flange, 3-coupling shell, 31-glib, 4-fixing base, 41-first mounting flange, 5-seal assembly, 51-blocking lid, 52-mechanical seal, 53-fixing screw, 531-hexagon socket, 532-locknut, 54-compression spring, 55-annular extrusion piece, 56-rubber sealing ring, 57-shaft sealing retainer ring, 58-O type sealing ring.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

Referring to fig. 1-5, the present utility model provides a technical solution: the utility model provides a hydraulic drive joint, includes transmission shaft 1, butt joint seat 2, coupling housing 3, fixing base 4 and seal assembly 5, and fixing base 4 is installed to coupling housing 3 left end face, and butt joint seat 2 is installed to coupling housing 3 right-hand member face, and coupling housing 3 left and right sides terminal surface symmetry is provided with seal assembly 5, and inside transmission shaft 1 that is provided with of butt joint seat 2.

The sealing assembly 5 comprises a blocking cover 51, a mechanical seal 52, a fixing screw 53, a compression spring 54, an annular extrusion piece 55, a rubber sealing ring 56, a shaft sealing check ring 57 and an O-shaped sealing ring 58, wherein the O-shaped sealing ring 58 is symmetrically embedded in the left end face and the right end face of the connecting shell 3, the rubber sealing ring 56 is symmetrically arranged in the left end face and the right end face of the connecting shell 3, the annular extrusion piece 55 is attached to the left end face of the rubber sealing ring 56, the compression spring 54 is clamped in the left end face of the annular extrusion piece 55, the shaft sealing check ring 57 is embedded in the left end face of the docking base 2, the fixing screw 53 is symmetrically inserted in the upper side, the lower side, the front side and the rear side of the inside of the docking base 2, the blocking cover 51 is embedded in the right end face of the docking base 2, and the mechanical seal 52 is attached to the left end face of the blocking cover 51.

The two groups of O-shaped sealing rings 58 are embedded, the specifications of the two groups of O-shaped sealing rings 58 are the same, the two groups of rubber sealing rings 56 are provided with two groups, the specifications of the two groups of rubber sealing rings 56 are the same, the rubber sealing rings 56 are made of ethylene propylene diene monomer rubber, the two groups of O-shaped sealing rings 58 enable the tightness between the connecting shell 3 and the fixing base 4 and the butt joint seat 2 to be better, the tightness between the connecting shell 3 and the fixing base 4 and the butt joint seat 2 is further improved by the two groups of rubber sealing rings 56 made of ethylene propylene diene monomer rubber, the two groups of annular extrusion sheets 55 are attached, the specifications of the two groups of annular extrusion sheets 55 are the same, a plurality of compression springs 54 are clamped, the specifications of the plurality of compression springs 54 are the same, annular grooves are formed in the right side inside the fixing base 4 and the left side inside the butt joint seat 2, the annular grooves are matched with the annular extrusion sheets 55, the plurality of compression springs 54 can apply extrusion force to the two groups of annular extrusion sheets 55 so that the two groups of annular extrusion sheets 55 extrude the two groups of rubber sealing rings 56, the sealing capability of the rubber sealing rings 56 is improved, and the annular extrusion sheets 55 can move left and right inside the fixing base 4 or the butt joint seat 2 conveniently.

The locating key groove 11 has been seted up on transmission shaft 1 up end right side, transmission shaft 1 annular side left side is provided with rotary vane 12, and rotary vane 12 links to each other through the welding mode with transmission shaft 1, transmission shaft 1 annular side left side is provided with follower disk 13, and follower disk 13 links to each other through the welding mode with transmission shaft 1, locating key groove 11 makes things convenient for external locating key to inlay and dress at transmission shaft 1 up end, rotary vane 12 conveniently drives transmission shaft 1 rotation, and follower disk 13 avoids transmission shaft 1 to appear controlling the displacement condition in the use, the front and back bilateral symmetry is provided with glib 31 on the coupling housing 3, annular oil pocket has been seted up to coupling housing 3 inside, and annular oil pocket and rotary vane 12 assorted, glib 31 is linked together with annular oil pocket, glib 31 makes things convenient for external hydraulic fluid to get into in the annular oil pocket.

The left side welding of fixing base 4 annular side has first mounting flange 41, the right side welding of annular side of butt joint seat 2 has second mounting flange 21, first mounting flange 41 conveniently installs fixedly to fixing base 4, and second mounting flange 21 conveniently installs fixedly to butt joint seat 2, fixing screw 53 alternates four, and four fixing screw 53 specification is the same, four fixing screw 53 right-hand member all is provided with interior hexagonal cap 531, four fixing screw 53 annular side left side has all meshed locking nut 532, four fixing screw 53 conveniently splice fixedly to fixing base 4, coupling shell 3 and butt joint seat 2, interior hexagonal cap 531 makes things convenient for maintainer to rotate fixing screw 53 with the help of external hexagon socket head cap wrench, and locking nut 532 conveniently fixes fixing screw 53.

As a first embodiment of the present utility model: firstly, the fixing seat 4 is installed on one side of a fixed arm in an external industrial robot by means of the first installation flange 41, then the outer end of the transmission shaft 1 is connected with a movable arm in the external industrial robot, and then an external hydraulic station is communicated with the oil nozzle 31 by a high-pressure hose, so that hydraulic oil enters an annular oil cavity in the connecting shell 3, and when the rotating blades 12 are pushed forward or reversely by the hydraulic oil, the transmission shaft 1 rotates clockwise or anticlockwise together, so that flexible movement of the mechanical arm in the external industrial robot is realized.

As a second embodiment of the present utility model: in the use process of the device, the two groups of O-shaped sealing rings 58 enable the tightness between the connecting shell 3 and the fixing seat 4 and the butt joint seat 2 to be better, the two groups of rubber sealing rings 56 further improve the tightness between the connecting shell 3 and the fixing seat 4 and the butt joint seat 2, and the plurality of compression springs 54 apply extrusion forces to the two groups of annular extrusion sheets 55, so that the two groups of annular extrusion sheets 55 extrude the two groups of rubber sealing rings 56, and the sealing capacity of the rubber sealing rings 56 is improved, and the leakage condition at the connecting part of the connecting shell 3 and the fixing seat 4 and the butt joint seat 2 is avoided; by embedding the mechanical seal 52, the tightness between the transmission shaft 1 and the butt joint seat 2 is better, and the tightness between the follow-up disc 13 and the butt joint seat 2 is better when the shaft sealing retainer ring 57 is used, and meanwhile, the four fixing screws 53 can connect and fix the fixing seat 4, the connecting shell 3 and the butt joint seat 2, so that the integrity of the fixing seat 4, the connecting shell 3 and the butt joint seat 2 is better.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides a hydraulic drive joint, includes transmission shaft, butt joint seat, coupling housing, fixing base and seal assembly, its characterized in that: the left end face of the connecting shell is provided with a fixed seat, the right end face of the connecting shell is provided with a butt joint seat, the left end face and the right end face of the connecting shell are symmetrically provided with sealing assemblies, and a transmission shaft is arranged in the butt joint seat;

the sealing assembly comprises a blocking cover, a mechanical seal, a fixing screw, a compression spring, annular extrusion sheets, rubber sealing rings, shaft sealing check rings and O-shaped sealing rings, wherein the O-shaped sealing rings are symmetrically embedded in the left end face and the right end face of the connecting shell, the rubber sealing rings are symmetrically arranged on the left end face and the right end face of the connecting shell, the annular extrusion sheets are attached to the left end face of the rubber sealing rings, the compression spring is clamped on the left end face of the annular extrusion sheets, the shaft sealing check rings are embedded in the left end face of the butt joint seat, the fixing screw is symmetrically inserted in the upper side, the lower side, the front side and the rear side of the inside of the butt joint seat, the blocking cover is embedded in the right end face of the butt joint seat, and the blocking cover Zuo Duanmian is attached to the mechanical seal.

2. A hydraulically driven joint according to claim 1, characterized in that: the O-shaped sealing rings are embedded with two groups, the specifications of the two groups of O-shaped sealing rings are the same, the two groups of rubber sealing rings are arranged, the specifications of the two groups of rubber sealing rings are the same, and the rubber sealing rings are made of ethylene propylene diene monomer rubber.

3. A hydraulically driven joint according to claim 1, characterized in that: the annular extrusion piece laminating has two sets of, and two sets of annular extrusion piece specifications are the same, compression spring clamps have a plurality of, and a plurality of compression spring specifications are the same, the ring channel has all been seted up to inside right side of fixing base and the inside left side of butt joint seat, and ring channel and annular extrusion piece phase-match.

4. A hydraulically driven joint according to claim 1, characterized in that: the positioning key groove is formed in the right side of the upper end face of the transmission shaft, rotary blades are arranged on the left side of the annular side face of the transmission shaft and connected with the transmission shaft in a welding mode, and a follow-up disc is arranged on the left side of the annular side face of the transmission shaft and connected with the transmission shaft in a welding mode.

5. A hydraulically driven joint according to claim 1, characterized in that: the oil nozzle is symmetrically arranged on the front side and the rear side of the upper end surface of the connecting shell, an annular oil cavity is formed in the connecting shell and matched with the rotating blades, and the oil nozzle is communicated with the annular oil cavity.

6. A hydraulically driven joint according to claim 1, characterized in that: the left side of the annular side face of the fixing seat is welded with a first mounting flange plate, and the right side of the annular side face of the butt joint seat is welded with a second mounting flange plate.

7. A hydraulically driven joint according to claim 1, characterized in that: four fixing screws are inserted, the specifications of the four fixing screws are the same, the right ends of the four fixing screws are all provided with inner hexagonal caps, and the left sides of the annular sides of the four fixing screws are all meshed with anti-loosening nuts.