CN209892548U

CN209892548U - Trunnion mounting base of hydraulic cylinder

Info

Publication number: CN209892548U
Application number: CN201920487354.1U
Authority: CN
Inventors: 洪松; 蒋礼; 鲁佳科
Original assignee: HANGZHOU ZHONGDE TRANSMISSION EQUIPMENT CO Ltd
Current assignee: HANGZHOU ZHONGDE TRANSMISSION EQUIPMENT CO Ltd
Priority date: 2019-04-11
Filing date: 2019-04-11
Publication date: 2020-01-03
Anticipated expiration: 2029-04-11

Abstract

The utility model discloses a hydraulic cylinder gudgeon mount pad, including setting up the gudgeon mount pad that has the ear shaft hole on the equipment body, the pneumatic cylinder that has the ear shaft, the gudgeon rotates to be connected in the ear shaft hole, be provided with the axle sleeve between gudgeon and the ear shaft hole, the interior anchor ring of axle sleeve is provided with the ring channel, be provided with the sealing ring between ring channel and the gudgeon. The utility model discloses a set up the sealing ring between axle sleeve and gudgeon, can make and have good leakproofness between axle sleeve and the gudgeon like this, can effectively prevent external dust particulate matter to get into the clearance between pneumatic cylinder gudgeon and the axle sleeve, reduced the wearing and tearing between gudgeon and the axle sleeve, increased the life of axle sleeve, guaranteed the normal work of pneumatic cylinder.

Description

Trunnion mounting base of hydraulic cylinder

Technical Field

The utility model relates to a gudgeon mount pad, in particular to pneumatic cylinder gudgeon mount pad.

Background

The hydraulic cylinder is a common mechanical device and is widely applied to various machines. The hydraulic cylinder is usually connected to the setting device in a rotating manner. The both sides of pneumatic cylinder are provided with the trunnion usually, are provided with the trunnion mount pad on the equipment body, are provided with on the trunnion mount pad with the trunnion hole that the trunnion corresponds, are provided with the axle sleeve in the trunnion hole, trunnion rotation connects in the axle sleeve, alright so with make the pneumatic cylinder can rotate. Because trunnion and axle sleeve rotate to be connected, be clearance fit between trunnion and the axle sleeve, during external dust particulate matter got into the clearance between trunnion and the axle sleeve easily, made the wearing and tearing aggravation between trunnion and the axle sleeve easily, reduced the life of axle sleeve, influenced the normal work of hydro-cylinder.

For example, chinese patent publication No. CN107972219A discloses a trunnion mounting structure of a plastic press, which includes a mounting base and a trunnion, the upper surfaces of both ends of the mounting base are provided with threaded columns through threads, the upper end of the threaded column is provided with a support base through threads, the center of the support base is provided with a support frame through being provided with a mounting hole, the upper end of the support frame is provided with a semicircular groove, the support frame is provided with a first arc-shaped backing plate at the bottom of the semicircular groove, an arc-shaped cover is installed above the support frame through the threaded columns, a second arc-shaped backing plate is installed on the inner side of the arc-shaped cover, the upper end of the arc-shaped cover is connected with the second arc-shaped backing plate through a connecting rod, the inner side of the joint of the arc-shaped cover and the support frame forms a circular through hole, both. In the oil cylinder, the combination of the first arc-shaped plate and the second arc-shaped plate is equivalent to a shaft sleeve, a gap is formed between the trunnion and the first arc-shaped plate and between the trunnion and the second arc-shaped plate, and external dust particles easily enter the gap between the trunnion and the first arc-shaped plate and between the trunnion and the second arc-shaped plate, so that the abrasion between the trunnion and the first arc-shaped plate and between the trunnion and the second arc-shaped plate is easily aggravated, the service lives of the first arc-shaped plate and the second arc-shaped plate are reduced, and the normal work of the oil cylinder is influenced.

Disclosure of Invention

The utility model aims at solving the easy clearance that gets into between hydraulic cylinder trunnion and the axle sleeve of external dust particulate matter, lead to the wearing and tearing aggravation between trunnion and the axle sleeve, reduce the life's of axle sleeve problem, provide a hydraulic cylinder trunnion mount pad, can effectively prevent external dust particulate matter to get into the clearance between hydraulic cylinder trunnion and the axle sleeve, reduce the wearing and tearing between trunnion and the axle sleeve, improve the life of axle sleeve.

The utility model aims at realizing through the following technical scheme: the utility model provides a hydraulic cylinder gudgeon mount pad, is including setting up the gudgeon mount pad that has the trunnion hole on the equipment body, the pneumatic cylinder that has the trunnion, be provided with the axle sleeve in the trunnion hole, the gudgeon rotates to be connected in the axle sleeve, the interior anchor ring of axle sleeve is provided with the ring channel, be provided with the sealing ring between ring channel and the gudgeon.

The utility model discloses in, the effect of ring channel is used for installing the sealing ring and to its positioning action of sealing ring. Through set up the sealing ring between axle sleeve and trunnion, can make and have good leakproofness between axle sleeve and the trunnion like this, can effectively prevent external dust particulate matter to get into the clearance between pneumatic cylinder trunnion and the axle sleeve, reduced the wearing and tearing between trunnion and the axle sleeve, increased the life of axle sleeve, guaranteed the normal work of pneumatic cylinder.

Preferably, the annular groove is provided on the side of the sleeve near the outside.

Preferably, the outer ring surface of the shaft sleeve is provided with an annular sealing ring groove, a sealing ring is embedded in the sealing ring groove, and the sealing ring is in sealing fit with the trunnion hole. Through set up the sealing washer on the outer anchor ring of axle sleeve for have good leakproofness between axle sleeve and the trunnion hole, prevented that external dust particulate matter from passing through the trunnion hole and getting into in the trunnion mount pad.

Preferably, the trunnion mounting seat comprises an inner trunnion mounting seat and an outer trunnion mounting seat, the inner trunnion mounting seat and the equipment body are integrally formed, and the outer trunnion mounting seat is in bolted connection with the inner trunnion mounting seat; be provided with first half earmuff hole on the interior earmuff mount pad, be provided with on the earmuff mount pad with the half earmuff hole of the corresponding second of first half earmuff hole, first half earmuff hole forms the earmuff hole with the mutual lock in the half earmuff hole of second. The outer trunnion mounting seat is connected with the inner trunnion mounting seat through bolts, so that the outer trunnion mounting seat and the inner trunnion mounting seat can be separated. When the outer trunnion mounting base is separated from the inner trunnion mounting base, the hydraulic cylinder can be mounted or dismounted. When the outer trunnion mounting seat is connected with the inner trunnion mounting seat, the hydraulic cylinder is fixed on the trunnion mounting seat.

Preferably, a sealing cover is arranged on one side of the outer trunnion mounting base away from the inner trunnion mounting base, and the sealing cover is covered on the outer side of the hydraulic cylinder. The sealing cover is arranged outside the hydraulic cylinder through the cover and plays a role in sealing and protecting the internal hydraulic cylinder.

Preferably, the groove depth of the annular groove gradually increases or decreases along the axial direction of the shaft sleeve, a spring is arranged between one end of the annular groove and the sealing ring, and the elastic force direction of the spring on the sealing ring faces to the end with the smaller groove depth of the annular groove. The sealing ring realizes the sealing between the shaft sleeve and the trunnion. The sealing ring can be extruded to the less one side of ring channel groove depth under the spring force effect, even the sealing ring produces the wearing and tearing back because relative rotation with the trunnion, still can guarantee the both sides of sealing ring respectively with the bottom surface of ring channel and the outer anchor ring in close contact with of trunnion, has effectively improved the sealed effect between trunnion and the axle sleeve like this.

Preferably, the section of the annular groove is a right trapezoid, and the section of the sealing ring is matched with that of the annular groove. The cross section of the annular groove is set to be a right trapezoid, so that the processing is convenient. The cross section of sealing ring and the cross section phase-match of ring channel can make and laminate between sealing ring and the seal groove more closely like this, improve sealed effect.

Preferably, a sealing cover is connected to the trunnion mounting seat, and the sealing cover is covered on the end part of the trunnion hole.

The utility model has the advantages that: the utility model discloses a set up the sealing ring between axle sleeve and gudgeon, can make and have good leakproofness between axle sleeve and the gudgeon like this, can effectively prevent external dust particulate matter to get into the clearance between pneumatic cylinder gudgeon and the axle sleeve, reduced the wearing and tearing between gudgeon and the axle sleeve, increased the life of axle sleeve, guaranteed the normal work of pneumatic cylinder.

Drawings

Fig. 1 is an exploded view of the present invention.

Fig. 2 is a schematic structural view of the bushing in an installed state.

In the figure: 1. interior trunnion mount pad, 2, outer trunnion mount pad, 3, pneumatic cylinder, 4, sealed cowling, 5, trunnion, 6, axle sleeve, 7, equipment body, 8, sealing washer, 9, ring channel, 10, sealing ring, 11, spring, 12, sealed lid, 13, bolt.

Detailed Description

The invention will be further described with reference to the following detailed description and accompanying drawings.

Example (b): as shown in fig. 1 to 2, the trunnion mounting base of the hydraulic cylinder comprises a trunnion mounting base arranged on an equipment body 7 and a hydraulic cylinder 3. Trunnions 5 are respectively arranged on two sides of the hydraulic cylinder 3. And the trunnion mounting seat is provided with a trunnion hole corresponding to the trunnion 5. And a shaft sleeve 6 is arranged in the ear shaft hole. The shaft sleeve 6 is coaxially arranged with the ear shaft hole. The trunnion 5 is rotatably connected in a shaft sleeve 6. The trunnion mounting base comprises an inner trunnion mounting base 1 and an outer trunnion mounting base 2. The inner trunnion mounting base 1 and the device body 7 are integrally formed. The outer trunnion mounting base 2 is connected with the inner trunnion mounting base 1 through bolts. The external ear shaft mounting seat 2 is annular, and the hydraulic cylinder 3 penetrates through the middle of the external ear shaft mounting seat 2. The inner trunnion mounting base 1 is provided with a first half trunnion hole. The external ear axis mounting seat 7 is provided with a second half ear axis hole corresponding to the first half ear axis hole. The first half-ear shaft hole and the second half-ear shaft hole are buckled with each other to form an ear shaft hole. One side of the outer trunnion mounting base 2, which is far away from the inner trunnion mounting base 1, is provided with a sealing cover 4. The seal cover 4 is mounted on the outside of the hydraulic cylinder 3. The outer trunnion mounting seat is connected with the inner trunnion mounting seat through bolts, so that the outer trunnion mounting seat and the inner trunnion mounting seat can be separated. When the outer trunnion mounting base is separated from the inner trunnion mounting base, the hydraulic cylinder can be mounted or dismounted. When the outer trunnion mounting seat is connected with the inner trunnion mounting seat, the hydraulic cylinder is fixed on the trunnion mounting seat. The sealing cover is arranged outside the hydraulic cylinder through the cover and plays a role in sealing and protecting the internal hydraulic cylinder.

An annular seal ring groove is arranged on the outer annular surface of the shaft sleeve 6. The sealing ring grooves are provided with two sealing ring grooves. The seal ring grooves are arranged in sequence along the axial direction of the shaft sleeve 6. And a sealing ring 8 is embedded in each sealing ring groove. The sealing ring 8 is in sealing fit with the ear canal hole. An annular groove 9 is arranged on the inner annular surface of the shaft sleeve 6. The annular groove 9 is provided on the side of the sleeve 6 close to the outside. The groove depth of the annular groove 9 gradually increases or decreases in the axial direction of the sleeve 6. In this embodiment, the annular groove 9 has a right-angled trapezoidal cross section. A sealing ring 10 is arranged between the annular groove 9 and the trunnion 5. The cross-section of the sealing ring 10 matches the cross-section of the annular groove 9. A spring 11 is arranged between one end of the annular groove 9 and the sealing ring 10. The spring 11 is applied with a spring force to the sealing ring 10 toward the end of the annular groove 9 with a smaller groove depth. The sealing ring realizes the sealing between the shaft sleeve and the trunnion hole, and the sealing ring realizes the sealing between the shaft sleeve and the trunnion. The sealing ring can be extruded to the less one side of ring channel groove depth under the spring force effect, even the sealing ring produces the wearing and tearing back because relative rotation with the trunnion, still can guarantee the both sides of sealing ring respectively with the bottom surface of ring channel and the outer anchor ring in close contact with of trunnion, has effectively improved the sealed effect between trunnion and the axle sleeve like this.

And a sealing cover 12 is also arranged on the trunnion mounting seat. The sealing cover 12 is covered on the end of the ear canal hole. The sealing cover 12 has a circular plate-shaped structure. A plurality of first bolt holes are formed in the periphery of the sealing cover 12. And a second bolt hole corresponding to the first bolt hole is formed in the trunnion mounting seat. The seal cap 12 is connected to the trunnion mount by bolts 13.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the principles of the present invention.

Claims

1. The utility model provides a hydraulic cylinder trunnion mount pad, is including setting up trunnion mount pad, the pneumatic cylinder (3) that have trunnion (5) in the trunnion hole that have on equipment body (7), be provided with axle sleeve (6) in the trunnion hole, trunnion (5) rotate to be connected in axle sleeve (6), its characterized in that: an annular groove (9) is formed in the inner annular surface of the shaft sleeve (6), and a sealing ring (10) is arranged between the annular groove (9) and the trunnion (5).

2. Hydraulic cylinder trunnion mounting according to claim 1, characterized in that the annular groove (9) is provided on the bushing (6) on the side close to the outside.

3. The trunnion mounting seat for a hydraulic cylinder according to claim 1, wherein the outer ring surface of the shaft sleeve (6) is provided with an annular sealing ring groove, a sealing ring (8) is embedded in the sealing ring groove, and the sealing ring (8) is in sealing fit with the trunnion hole.

4. The trunnion mounting seat of the hydraulic cylinder according to claim 1, which comprises an inner trunnion mounting seat (1) and an outer trunnion mounting seat (2), wherein the inner trunnion mounting seat (1) is integrally formed with an equipment body (7), and the outer trunnion mounting seat (2) is bolted with the inner trunnion mounting seat (1); be provided with first half earmuff hole on interior earmuff mount pad (1), be provided with on outer earmuff mount pad (2) with the half earmuff hole of the corresponding second in first half earmuff hole, first half earmuff hole and the mutual lock in second half earmuff hole form earmuff hole.

5. A hydraulic cylinder trunnion mounting base according to claim 4, characterized in that a sealing cover (4) is arranged on the side of the outer trunnion mounting base (2) away from the inner trunnion mounting base (1), and the sealing cover (4) covers the outer side of the hydraulic cylinder (3).

6. A trunnion mounting seat for a hydraulic cylinder according to claim 1 or 2 or 3 or 4 or 5, characterized in that the groove depth of the annular groove (9) gradually increases or decreases along the axial direction of the shaft sleeve (6), a spring (11) is arranged between one end of the annular groove (9) and the sealing ring (10), and the spring (11) exerts a spring force on the sealing ring (10) in the direction towards the end of the annular groove (9) with smaller groove depth.

7. A hydraulic cylinder trunnion mounting according to claim 6, characterized in that the cross-section of the annular groove (9) is right trapezoid, and the cross-section of the sealing ring (10) matches the cross-section of the annular groove (9).

8. A trunnion mounting seat for a hydraulic cylinder according to claim 1, characterized in that a sealing cover (12) is attached to the trunnion mounting seat, and the sealing cover (12) is fitted over the end of the trunnion hole.