CN218862982U

CN218862982U - Forklift tilting cylinder

Info

Publication number: CN218862982U
Application number: CN202222984192.7U
Authority: CN
Inventors: 刘中兴; 林启盛; 李超强
Original assignee: Linde China Forklift Truck Corp Ltd
Current assignee: Linde China Forklift Truck Corp Ltd
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2023-04-14
Anticipated expiration: 2032-11-07

Abstract

The utility model provides a forklift tilt cylinder, which comprises a cylinder barrel and a cylinder cover assembled in an opening of the cylinder barrel, wherein the periphery of the cylinder cover is provided with a limiting step, and the limiting step is limited by the butt of a steel wire retainer ring assembled on the inner wall of the cylinder barrel; and a sealing element is filled in a gap between the limiting step of the cylinder cover and the inner wall of the cylinder barrel. Due to the arrangement, gaps which exist on the cylinder cover and can store water are well eliminated, and the contact between condensed water and corrosion-prone accessories such as steel wire check rings is directly blocked; the inclined oil cylinder keeps stable structure, oil leakage prevention and long service life for a long time.

Description

Forklift tilting cylinder

Technical Field

The utility model relates to a fork truck field, concretely relates to fork truck's for freezer part, it is specific again, relate to a fork truck tilting cylinder.

Background

As shown in fig. 1, the forklift tilt cylinder 100 is a cylinder for connecting a forklift mast 200, and the cylinder is disposed in a tilted manner, and an opening of the cylinder tube is tilted upward. The forklift frequently enters and exits the refrigeration house, the inclined oil cylinder easily produces condensed water and enters a gap between the cylinder barrel and the cylinder cover, and the condensed water is not easily eliminated because the opening of the cylinder barrel is inclined upwards. After a period of time, the cylinder cover, the steel wire retainer ring, the sealing ring and the like are easy to corrode, the steel wire retainer ring is easy to break after being corroded, the sealing between the cylinder cover and the cylinder barrel is poor, oil in the cylinder barrel flows out through a gap between the cylinder barrel and the cylinder cover, the problem of oil leakage occurs, and the service life is short.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a solve above-mentioned problem, provide a fork truck tilting cylinder, difficult ponding corrodes, long service life.

In order to achieve the above purpose, the utility model provides a technical scheme as follows:

a forklift tilt oil cylinder comprises a cylinder barrel and a cylinder cover assembled in an opening of the cylinder barrel, wherein a limiting step is arranged on the periphery of the cylinder cover and is abutted and limited by a steel wire check ring assembled on the inner wall of the cylinder barrel; and a sealing element is filled in a gap between the limiting step of the cylinder cover and the inner wall of the cylinder barrel.

Further, the sealing element is a sealing rubber block formed by curing a sealing rubber body.

Further, the sealing element is a sealing ring.

The piston is assembled in an inner cavity of the cylinder barrel, the cylinder cover is provided with a central shaft hole, and the piston rod is connected with the piston and penetrates through the central shaft hole of the cylinder cover to extend outwards.

Further, a sealing ring and a dustproof ring are arranged between the inner wall of the central shaft hole and the piston rod, and the dustproof ring is located on the outer side of the sealing ring.

Further, still include the shield, the shield includes the end cover and connects at the outlying fixed cover of end cover, the end cover is planar structure and puts the opening of stepping down that forms the piston rod of stepping down at central point, the end cover is flat pastes the terminal surface in the outer tip of cylinder cap and covers the sealing member, fixed cover cup joints on the cylinder.

Furthermore, a sealing layer is filled in a gap between the end cover and the end face of the outer end part of the cylinder cover.

Further, the sealing layer is a sealing glue layer formed by curing the sealing glue.

Furthermore, the outer end face of the cylinder cover is provided with a bayonet at the periphery of the central shaft hole, and the inner edge of the end cover of the dustproof cover is bent to form a buckle and is buckled in the bayonet of the cylinder cover through the buckle.

Furthermore, a groove is sunken in the inner wall of the cylinder barrel, the steel wire retainer ring is limited in the groove, and a through hole penetrating through the groove is formed in the outer side wall of the cylinder barrel; the fixed sleeve of the dustproof cover also blocks the through hole.

Through the utility model provides a technical scheme has following beneficial effect:

the limiting step arranged on the periphery of the cylinder cover is limited by the abutting connection of the steel wire retainer ring assembled on the inner wall of the cylinder barrel, so that the stable assembly of the cylinder cover and the cylinder barrel is realized. Meanwhile, a sealing element is filled in a gap between a limiting step of the cylinder cover and the inner wall of the cylinder barrel, so that a gap which is formed in the cylinder cover and can store water is well eliminated, and the contact between condensed water and corrosion-prone accessories such as a steel wire check ring is directly blocked; the cylinder cover and other accessories for fixing and sealing are not easy to corrode, so that the inclined oil cylinder keeps stable structure and oil tightness for a long time, and the service life is long.

Drawings

FIG. 1 is a schematic diagram of an application of a tilt cylinder;

FIG. 2 is a schematic structural diagram of a tilt cylinder of the forklift in the embodiment;

fig. 3 is an enlarged schematic view of the area a in fig. 2.

Detailed Description

To further illustrate the various embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

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

Referring to fig. 2 and 3, the embodiment provides a forklift tilt cylinder, which includes a cylinder 11 and a cylinder cover 14 assembled in an opening of the cylinder 11, specifically, the cylinder 11 has an inner cavity 111 and an opening communicating with the inner cavity 111, and the cylinder cover 14 is assembled in the opening of the cylinder 11; specifically, the periphery of the cylinder cover 14 is provided with a limiting step, and the limiting step is abutted and limited by a steel wire retainer ring 16 assembled on the inner wall of the cylinder barrel 11, so that the cylinder cover 14 and the cylinder barrel 11 are fixed. And a sealing element 18 is filled in a gap between the limiting step of the cylinder cover 14 and the inner wall of the cylinder barrel 11. Gaps which exist on the cylinder cover 14 and can store water are well eliminated, and the contact between condensed water and corrosion-prone accessories such as a steel wire check ring 16 is directly blocked; the cylinder cover 14 and other fixing and sealing accessories are not easy to corrode, so that the inclined oil cylinder keeps stable structure and oil tightness for a long time and has long service life. Specifically, the oil cylinder is an oil cylinder with a piston rod, namely the oil cylinder further comprises a piston 12 and a piston rod 13, the piston 12 is assembled in an inner cavity 111 of the cylinder barrel 11, the cylinder cover 14 is provided with a central shaft hole, and the piston rod 13 is connected with the piston 12 and penetrates through the central shaft hole of the cylinder cover 14 to extend outwards.

The inner walls of the cylinder cover 14 and the cylinder barrel 11 and the inner wall of the central shaft hole of the cylinder cover 14 and the piston rod 13 are in sealing fit through sealing rings, namely, the inner walls of the cylinder cover 14 and the cylinder barrel 11 are in sealing fit through a first sealing ring 171, and the inner wall of the central shaft hole of the cylinder cover 14 and the piston rod 13 are in sealing fit through a second sealing ring 172.

Further, this hydro-cylinder still includes shield 15, shield 15 includes end cover 151 and connects at the outlying fixed cover 152 of end cover 151, end cover 151 is planar structure and puts the opening of stepping down that forms the piston rod 13 of stepping down at the central point, end cover 151 is flat to be attached to the terminal surface of the outer tip of cylinder cap 14, and covers sealing member 18, fixed cover 152 is fixed cup jointed on cylinder 11.

The dust cover 15 is a planar end cover 151 and is flatly attached to the end face of the outer end of the cylinder cover 14, so that a gap between the end cover 151 and the end face of the outer end of the cylinder cover 14 can be well eliminated, and corrosion to the cylinder cover 14 and other parts caused by condensed water stored in the gap between the end cover 151 and the end face of the outer end of the cylinder cover 14 is prevented.

The application provides a fork truck slope hydro-cylinder can fill sealing member 18 and replacement shield 15 on the basis of original structure and just can realize improving, need not to carry out big change to original structure, and it is minimum to change the cost. Not only be applicable to the fork truck that the freezer was used, also can use on other vehicles, like outdoor fork truck etc..

Further, in other preferred embodiments, the sealing element 18 is a sealing rubber block after the sealing rubber is cured, for example, when in operation, the rubber (such as resin, silica gel, etc.) is injected into a groove formed by enclosing the limiting step of the cylinder cover 14 and the inner wall of the cylinder 11, and then the dust cover 15 is covered, and after the rubber is cured, the sealing element 18 is formed, so that the sealing effect is good. Of course, in other embodiments, the sealing element 18 may also be a sealing ring (defined as a third sealing ring) directly, that is, after the cylinder head 14 is installed, the third sealing ring is directly filled in a groove formed by enclosing the limiting step of the cylinder head 14 and the inner wall of the cylinder 11, and then the dust cover 15 is covered.

Further preferably, a sealing layer is filled in a gap between the end cover 151 and the end face of the outer end portion of the cylinder head 14, so that a very small gap between the end cover 151 and the end face of the outer end portion of the cylinder head 14 is also filled in the sealing layer, and a large water storage gap caused by different flatness of the end faces of the end cover 151 and the outer end portion of the cylinder head 14 is prevented. The corrosion resistance is better. More specifically, like the sealing element 18, the sealing layer is a sealing glue layer formed by curing the sealing glue, and the injected glue can be well infiltrated and filled, so that the sealing performance is good.

Further, in other preferred embodiments, the outer end surface of the cylinder cover 14 is provided with a bayonet at the periphery of the central shaft hole, the inner edge of the end cover 151 of the dust cover 15 is bent to form the buckle 153, and the buckle 153 is buckled in the bayonet of the cylinder cover 14, so that the inner side and the outer side of the end cover 151 of the dust cover 15 are fixedly assembled, the dust cover 15 is not easy to deform and fall off, the assembly stability is better, and water vapor is effectively prevented from entering the dust cover 15 and contacting the cylinder cover 14.

Further, in other preferred embodiments, a groove is recessed in the inner wall of the cylinder barrel 11, the steel wire retainer ring 16 is limited in the groove to mount the steel wire retainer ring 16, and a through hole 112 penetrating through the groove is formed in the outer side wall of the cylinder barrel 11; the through hole 112 is provided to facilitate the insertion of a tool from the through hole 112 to eject the wire retainer ring 16, and the fixing sleeve 152 of the dust cap 15 also seals the through hole 112 to prevent the through hole 112 from contacting with the external environment, thereby preventing water vapor from entering from the through hole 112 to corrode the wire retainer ring 16.

Further, still be provided with dust ring 19 between the inner wall in the center shaft hole of cylinder cap 14 and piston rod 13, dust ring 19 is located the outside of second sealing washer 172, can play dustproof effect.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a fork truck tilting cylinder which characterized in that: the cylinder cover is assembled in an opening of the cylinder barrel, a limiting step is arranged on the periphery of the cylinder cover and is abutted and limited by a steel wire check ring assembled on the inner wall of the cylinder barrel; and a sealing element is filled in a gap between the limiting step of the cylinder cover and the inner wall of the cylinder barrel.

2. The forklift tilt cylinder of claim 1, wherein: the sealing element is a sealing rubber block after the sealing rubber is solidified.

3. The forklift tilt cylinder of claim 1, wherein: the sealing element is a sealing ring.

4. The forklift tilt cylinder of claim 1, wherein: the piston is assembled in the inner cavity of the cylinder barrel, the cylinder cover is provided with a central shaft hole, and the piston rod is connected with the piston and penetrates through the central shaft hole of the cylinder cover to extend outwards.

5. The forklift tilt cylinder of claim 4, wherein: a sealing ring and a dustproof ring are arranged between the inner wall of the central shaft hole and the piston rod, and the dustproof ring is located on the outer side of the sealing ring.

6. The forklift tilt cylinder of claim 4, wherein: still include the shield, the shield includes the end cover and connects at the peripheral fixed cover of end cover, the end cover is planar structure and puts the opening of stepping down that forms the piston rod of stepping down at central point, the end cover is flat to be pasted in the terminal surface of the outer tip of cylinder cap and is covered the sealing member, fixed cover cup joints on the cylinder.

7. The forklift tilt cylinder of claim 6, wherein: and a sealing layer is filled in a gap between the end cover and the end face of the outer end part of the cylinder cover.

8. The forklift tilt cylinder of claim 7, wherein: the sealing layer is a sealing glue layer formed by solidifying the sealing glue body.

9. The forklift tilt cylinder of claim 6, wherein: the outer end face of the cylinder cover is provided with a bayonet at the periphery of the central shaft hole, and the inner edge of the end cover of the dustproof cover is bent to form a buckle and is buckled in the bayonet of the cylinder cover through the buckle.

10. The forklift tilt cylinder of claim 6, wherein: the inner wall of the cylinder barrel is sunken with a groove, the steel wire retainer ring is limited in the groove, and the outer side wall of the cylinder barrel is provided with a through hole penetrating to the groove; the fixed sleeve of the dustproof cover also blocks the through hole.