CN211594946U - Lifting oil cylinder buffer device for forklift - Google Patents
Lifting oil cylinder buffer device for forklift Download PDFInfo
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- CN211594946U CN211594946U CN201922348347.6U CN201922348347U CN211594946U CN 211594946 U CN211594946 U CN 211594946U CN 201922348347 U CN201922348347 U CN 201922348347U CN 211594946 U CN211594946 U CN 211594946U
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Abstract
The utility model discloses a lifting oil cylinder buffer device for a forklift, which comprises a one-way valve, a piston, a gasket, a buffer shaft sleeve, a buffer plunger, a cylinder seat, an oil inlet hole, a first oil cavity, a second oil cavity, an oil outlet and a cylinder barrel, wherein the first oil cavity is horizontally arranged in the cylinder seat, and the oil inlet hole is arranged on one side of the cylinder seat; the utility model discloses change original inside buffering axle sleeve for the straight hole into horn eye and straight hole integrated form buffering axle sleeve, the fluid throttle becomes progressive throttle after buffering plunger gets into buffering axle sleeve like this, the throttle effect is by little to big, it is mild stable, and the optimal size 16 silks that the adjustment of buffering clearance reachs after experimental, the asynchronous phenomenon that has so both guaranteed the buffering effect and has been eliminated and caused by the machining error accumulation, the sound that electric fork truck and the fork truck that has the special operating mode requirement to the noise produced by instantaneous throttle when the hydro-cylinder moves the buffering position has been eliminated, and through the buffering effect of the most optimal buffering clearance of a large amount of experimental adjustments in scene in order to reach the ideal.
Description
Technical Field
The utility model relates to a fork truck equipment field specifically is a play to rise hydro-cylinder buffer for fork truck.
Background
Cylinder buffer structure behind common fork truck two-stage portal fork truck, the full free portal fork truck of two-stage, the full free portal fork truck hydro-cylinder of tertiary on the present fork truck market, its theory of operation is: the oil cylinder buffering plunger piston and the cylinder seat are integrated to seal an oil return path of hydraulic oil, and when the load of the oil cylinder is lowered, the load forces the hydraulic oil below the piston to pass through a gap between the buffering plunger piston and the buffering shaft sleeve to play a buffering role.
The buffering structure between the buffering plunger and the buffering shaft sleeve is usually used for adjusting the horizontal clearance between the buffering plunger and the buffering shaft sleeve to realize the buffering performance, so that when the piston of the oil cylinder descends to a buffering stage, instantaneous throttling is realized, the pressure of hydraulic oil changes instantaneously, pressure pulse is large to generate noise, the noise generated by the common internal combustion forklift is large, the noise requirement is small, no special requirement is provided, the abnormal noise problem is generated when the piston of the electric forklift with high noise requirement and the forklift oil cylinder with special requirements on use working conditions descends to a buffering part, the phenomenon of desynchrony is generated when the oil cylinders on two sides descend to the bottom due to the fact that the processing error is amplified due to the fact that the buffering clearance is too small, and the buffering structure between the buffering plunger and the buffering shaft sleeve is usually used for adjusting the horizontal clearance between the buffering plunger and the buffering shaft sleeve to realize the buffering performance.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a lifting oil cylinder buffer device for a forklift, which aims to overcome the defect that the buffer structure between a buffer plunger and a buffer shaft sleeve in the prior industry is used for adjusting the horizontal clearance between the buffer plunger and the buffer shaft sleeve to realize the buffer performance, therefore, when the piston of the oil cylinder descends to the buffering stage, the instantaneous throttling is realized, the pressure of hydraulic oil is instantaneously changed, the pressure pulse is large, the sound is generated, the noise generated by the common diesel fork truck is large, the requirement on the sound is low, so the electric forklift with high noise requirement and the forklift cylinder with special requirement on the working condition can not generate abnormal sound when the piston descends to the buffering part, and the phenomenon of desynchronization caused by the fact that the oil cylinders on two sides fall to the bottom due to the fact that the buffering clearance of the oil cylinders is too small, and the buffering structure between the buffering plunger piston and the buffering shaft sleeve is a technical problem of adjusting the horizontal clearance between the buffering plunger piston and the buffering shaft sleeve to realize the buffering performance in the industry.
The purpose of the utility model can be realized by the following technical scheme:
a lifting oil cylinder buffer device for a forklift comprises a one-way valve, a piston, a gasket, a buffer shaft sleeve, a buffer plunger, a cylinder base, an oil inlet hole, a first oil cavity, a second oil cavity, an oil outlet and a cylinder barrel, wherein the first oil cavity is horizontally formed in the cylinder base, the oil inlet hole is formed in one side of the cylinder base, the oil inlet hole is in conduction connection with the first oil cavity, the second oil cavity perpendicular to the first oil cavity is formed in the cylinder base, and the oil outlet is formed in the top of the second oil cavity;
the oil outlet device is characterized in that a cylinder barrel is installed at the top of the cylinder barrel, a sliding cavity communicated with the oil outlet is formed in the cylinder barrel, a piston is slidably installed in the sliding cavity, a buffering shaft sleeve is fixedly installed in the piston, a gasket is installed at the top of the buffering shaft sleeve, a one-way valve is installed at the top of the gasket, a buffering plunger is installed in the buffering shaft sleeve, and the bottom end of the buffering plunger extends out of the buffering shaft sleeve and into the oil outlet of the second oil cavity.
As a further aspect of the present invention: the inside horn hole and the straight hole of having seted up of buffering axle sleeve, the horn hole is located the straight hole below, and the bottom internal diameter of horn hole is greater than the top external diameter.
As a further aspect of the present invention: and the bottom opening wall of the oil outlet of the second oil chamber is provided with a ring edge for limiting and buffering a plunger piston.
As a further aspect of the present invention: and a piston sealing ring is arranged below the outer ring of the piston, and the piston is hermetically installed by matching with the inner wall of a piston sealing ring cylinder 14.
As a further aspect of the present invention: the load range of the forklift is 1.5 tons to 5 tons.
As a further aspect of the present invention: the buffering plunger and the cylinder seat are of an integrated structure.
The utility model has the advantages that: the utility model discloses a reasonable structural design, change original inside buffering axle sleeve for the straight hole into horn hole and straight hole integrated form buffering axle sleeve, the fluid throttle becomes progressive throttle after buffering plunger gets into buffering axle sleeve like this, the throttle effect is by little to big, it is mild stable, and the optimal size 16 silk that the adjustment of buffering clearance reachs after for testing, the asynchronous phenomenon that has both guaranteed the buffering effect like this and has eliminated and has caused by the processing error accumulation, the sound that the fork truck that has eliminated electric fork truck and has special operating mode requirement to the noise produced by instantaneous throttle when the hydro-cylinder moves the buffering position, and through the optimal buffering clearance of a large amount of experimental adjustments in scene in order to reach the buffering effect of ideal.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a sectional view of the overall structure of the present invention;
fig. 2 is a partial sectional view of the present invention.
In the figure: 1. a one-way valve; 2. a piston; 3. a gasket; 4. a buffer shaft sleeve; 5. a buffer plunger; 6. a piston seal ring; 7. a cylinder base; 8. an oil inlet hole; 9. a first oil chamber; 10. a second oil chamber; 11. an oil outlet; 12. a horn hole; 13. a straight hole; 14. a cylinder barrel.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-2, a lifting cylinder buffer device for a forklift comprises a one-way valve 1, a piston 2, a gasket 3, a buffer shaft sleeve 4, a buffer plunger 5, a cylinder base 7, an oil inlet hole 8, a first oil cavity 9, a second oil cavity 10, an oil outlet 11 and a cylinder barrel 14, wherein the first oil cavity 9 is horizontally arranged in the cylinder base 7, the oil inlet hole 8 is arranged on one side of the cylinder base 7, the oil inlet hole 8 is communicated and connected with the first oil cavity 9, the second oil cavity 10 vertical to the first oil cavity 9 is arranged in the cylinder base 7, and the oil outlet 11 is arranged at the top of the second oil cavity 10;
a cylinder 14 is installed at the top of the cylinder base 7, a sliding cavity communicated with the oil outlet 11 is formed in the cylinder 14, a piston 2 is installed in the sliding cavity in a sliding mode, a buffering shaft sleeve 4 is fixedly installed in the piston 2, a gasket 3 is installed at the top of the buffering shaft sleeve 4, a one-way valve 1 is installed at the top of the gasket 3, a buffering plunger 5 is installed in the buffering shaft sleeve 4, and the bottom end of the buffering plunger 5 stretches out of the buffering shaft sleeve 4 and stretches into the oil outlet 11 of the second oil cavity 10.
Inside flared hole 12 and the straight hole 13 of having seted up of buffer shaft sleeve 4, flared hole 12 is located straight hole 13 below, and flared hole 12 bottom internal diameter is greater than the top external diameter, and buffer plunger 5 gets into buffer shaft sleeve 4 back fluid throttle and becomes progressive throttle, and the throttling effect is big from little to big.
And the bottom opening wall of the oil outlet 11 of the second oil chamber 10 is provided with a ring edge for limiting the buffering plunger piston 5, so that the installation is convenient.
Piston seal ring 6 is equipped with to piston 2 outer lane below, and piston 2 is through the sealed installation of 14 inner walls of cylinder barrel cooperations with piston seal ring 6, is convenient for guarantee sealing connection.
The load range of the forklift is 1.5-5 tons, and the forklift has special working condition requirements on noise.
The buffering plunger 5 and the cylinder seat 7 are of an integrated structure, and synchronous movement is achieved.
The concrete operation steps of the lifting oil cylinder buffer device are as follows:
the buffering plunger 5 and the cylinder seat 7 are integrated to seal an oil return path of hydraulic oil, when the load of the oil cylinder is reduced, the piston 2 is promoted to be reduced, the hydraulic oil enters the first oil chamber 9 and the second oil chamber 10 of the cylinder seat 7 through the oil inlet hole 8, enters the horn hole 12 and the straight hole 13 between the buffering shaft sleeve 4 and the buffering plunger 5 in the piston 2 through the oil outlet 11, namely the oil throttling after entering the buffering shaft sleeve 4 is changed into progressive throttling, and finally the oil is discharged in a one-way mode through the check valve 1.
The utility model discloses a reasonable structural design, change original inside for the buffer shaft sleeve 4 of straight hole 13 into bell-mouth hole 12 and straight hole 13 integrated form buffer shaft sleeve 4, buffer plunger 5 gets into buffer shaft sleeve 4 back fluid throttle and becomes progressive throttle like this, the throttle effect is big by little, it is mild stable, and the adjustment of buffering clearance is the optimum dimension 16 silk that reachs after experimental, the asynchronous phenomenon that causes by the processing error accumulational has both been guaranteed the buffering effect like this and has been eliminated, the sound that the fork truck of having eliminated electric fork truck and having special operating mode requirement to the noise produced by instantaneous throttle when the hydro-cylinder moves the buffering position, and through the optimum buffering effect of the most experimental adjustment in a large number on-the-spot in order to reach the ideal buffering effect.
The utility model discloses a theory of operation: the buffering plunger 5 and the cylinder seat 7 are integrated to seal an oil return path of hydraulic oil, when the load of the oil cylinder is reduced, the piston 2 is promoted to be reduced, the hydraulic oil enters the first oil chamber 9 and the second oil chamber 10 of the cylinder seat 7 through the oil inlet hole 8, enters the horn hole 12 and the straight hole 13 between the buffering shaft sleeve 4 and the buffering plunger 5 in the piston 2 through the oil outlet 11, namely the oil throttling after entering the buffering shaft sleeve 4 is changed into progressive throttling, and finally the oil is discharged in a one-way mode through the check valve 1.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. A lifting oil cylinder buffering device for a forklift is characterized by comprising a one-way valve (1), a piston (2), a gasket (3), a buffering shaft sleeve (4), a buffering plunger (5), a cylinder base (7), an oil inlet hole (8), a first oil cavity (9), a second oil cavity (10), an oil outlet (11) and a cylinder barrel (14), wherein the first oil cavity (9) is horizontally formed in the cylinder base (7), the oil inlet hole (8) is formed in one side of the cylinder base (7), the oil inlet hole (8) is in conduction connection with the first oil cavity (9), the second oil cavity (10) perpendicular to the first oil cavity (9) is formed in the cylinder base (7), and the oil outlet (11) is formed in the top of the second oil cavity (10);
cylinder (14) are installed at cylinder base (7) top, the inside sliding chamber who communicates with oil-out (11) of seting up of cylinder (14), sliding chamber inside slidable mounting has piston (2), the inside fixed mounting of piston (2) has buffering axle sleeve (4), gasket (3) are installed at buffering axle sleeve (4) top, check valve (1) are installed at gasket (3) top, buffering axle sleeve (4) internally mounted has buffering plunger (5), and stretches out and stretch into in oil-out (11) of second oil pocket (10) from buffering axle sleeve (4) buffering plunger (5) bottom.
2. The lifting cylinder buffer device for the forklift as recited in claim 1, wherein the buffer shaft sleeve (4) is internally provided with a bell mouth hole (12) and a straight hole (13), the bell mouth hole (12) is located below the straight hole (13), and the inner diameter of the bottom of the bell mouth hole (12) is larger than the outer diameter of the top.
3. The lift cylinder damping device for fork lift truck as claimed in claim 1, characterized in that the bottom port wall of the oil outlet (11) of the second oil chamber (10) is provided with a rim for limiting the damping plunger (5).
4. The lifting cylinder buffer device for the forklift as recited in claim 1, wherein the piston sealing ring (6) is installed below the outer ring of the piston (2), and the piston (2) is installed in a sealing manner by matching with the inner wall of the cylinder (14) of the piston sealing ring (6).
5. A lift cylinder cushioning device for a forklift as claimed in claim 1, wherein the forklift has a load range of 1.5 ton to 5 ton.
6. A lift cylinder cushioning device for a forklift as claimed in claim 1, characterised in that the cushioning plunger (5) and the cylinder block (7) are of one-piece construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922348347.6U CN211594946U (en) | 2019-12-24 | 2019-12-24 | Lifting oil cylinder buffer device for forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922348347.6U CN211594946U (en) | 2019-12-24 | 2019-12-24 | Lifting oil cylinder buffer device for forklift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211594946U true CN211594946U (en) | 2020-09-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922348347.6U Active CN211594946U (en) | 2019-12-24 | 2019-12-24 | Lifting oil cylinder buffer device for forklift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211594946U (en) |
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2019
- 2019-12-24 CN CN201922348347.6U patent/CN211594946U/en active Active
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