Shock-resistant piston type hydraulic energy accumulator

Abstract

The utility model relates to the field of hydraulic energy accumulators, and discloses an anti-impact piston type hydraulic energy accumulator which comprises an energy accumulator shell, a front end plate is fixedly connected to the front side of the energy accumulator shell, a first hydraulic oil channel is formed in the middle of the front end plate, and a buffering assembly is arranged on the rear side of the front end plate. Limiting rods are fixedly connected to the left and right sides of the rear side of the inner wall of the energy accumulator shell, piston bodies are slidably connected to the outer sides of the limiting rods, the buffer assembly comprises telescopic columns, springs, a buffer plate and a second hydraulic oil channel, and the telescopic columns are fixedly connected to the left and right sides of the rear part of the front end plate. According to the piston type hydraulic energy accumulator, through cooperation of the telescopic column, the spring, the buffer plate, the second hydraulic oil channel and other structures, the piston type hydraulic energy accumulator can protect impact, the situation that when the internal pressure of the hydraulic cavity drops suddenly, the piston impacts the front end plate, and consequently equipment is damaged is prevented, and the service life of the piston type hydraulic energy accumulator is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic accumulators, in particular to an impact-resistant piston hydraulic accumulator. Background Art

[0002] A piston hydraulic accumulator is a device used to store hydraulic energy and smooth pressure fluctuations in hydraulic systems. Piston hydraulic accumulators are widely used in areas that require smoothing of hydraulic system pressure fluctuations, absorbing energy shocks, providing backup energy, and reducing the number of pump starts, such as construction machinery, aerospace, heavy equipment, railways, and marine engineering.

[0003] In the prior art, when the internal pressure of the hydraulic chamber of the piston type hydraulic accumulator drops suddenly, the piston type hydraulic accumulator is easily impacted by the piston, causing equipment damage, resulting in a reduction in the service life of the piston type hydraulic accumulator. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides an impact-resistant piston hydraulic accumulator, which aims to improve the problem in the prior art that when the pressure inside the hydraulic chamber of the piston hydraulic accumulator suddenly drops, the piston hydraulic accumulator is easily damaged by the impact of the piston, resulting in reduced service life of the piston hydraulic accumulator.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an impact-resistant piston hydraulic accumulator, comprising an accumulator housing, a front end plate is fixedly connected to the front side of the accumulator housing, a first hydraulic oil channel is opened in the middle of the front end plate, a buffer assembly is arranged on the rear side of the front end plate, and limit rods are fixedly connected to the left and right sides of the rear side of the inner wall of the accumulator housing, and a piston body is slidably connected to the outer side of the limit rod.

[0006] As a further description of the above technical solution:

[0007] The buffer assembly includes a telescopic column, a spring, a buffer plate and a second hydraulic oil channel. The telescopic column is fixedly connected to the left and right sides of the rear of the front end plate, the spring is arranged on the outside of the telescopic column, the buffer plate is fixedly connected to the rear side of the telescopic column, and the second hydraulic oil channel is opened in the middle of the buffer plate.

[0008] As a further description of the above technical solution:

[0009] A gas chamber is provided on the front side of the middle part of the accumulator housing.

[0010] As a further description of the above technical solution:

[0011] A hydraulic chamber is provided at the rear side of the middle part of the accumulator housing.

[0012] As a further description of the above technical solution:

[0013] The buffer plate is slidably connected inside the gas cavity.

[0014] As a further description of the above technical solution:

[0015] A gas passage is arranged in the middle of the rear side of the accumulator housing.

[0016] As a further description of the above technical solution:

[0017] One end of the spring is fixedly connected to the telescopic column, and the other end of the spring is fixedly connected to the buffer plate.

[0018] The utility model has the following beneficial effects:

[0019] In the utility model, the piston-type hydraulic accumulator can be protected against impact by the cooperation between the telescopic column, the spring, the buffer plate, the second hydraulic oil channel and other structures, so as to prevent the piston from impacting the front end plate and causing damage to the equipment when the internal pressure of the hydraulic chamber drops suddenly, thereby improving the service life of the piston-type hydraulic accumulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional diagram of an impact-resistant piston hydraulic accumulator proposed by the utility model;

[0021] Figure 2 A cross-sectional view of an impact-resistant piston hydraulic accumulator proposed by the utility model;

[0022] Figure 3 for Figure 2 Enlarged view of point A in .

[0023] Legend:

[0024] 1. Accumulator housing; 2. Front end plate; 3. First hydraulic oil channel; 4. Telescopic column; 5. Spring; 6. Buffer plate; 7. Second hydraulic oil channel; 8. Limit rod; 9. Piston body; 10. Gas channel; 11. Gas chamber; 12. Hydraulic chamber. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Reference Figure 1-3The utility model provides an embodiment: an impact-resistant piston hydraulic accumulator, including an accumulator housing 1, a front end plate 2 is fixedly connected to the front side of the accumulator housing 1, a first hydraulic oil channel 3 is opened in the middle of the front end plate 2, a buffer assembly is arranged on the rear side of the front end plate 2, and a limit rod 8 is fixedly connected to the left and right sides of the rear side of the inner wall of the accumulator housing 1, a piston body 9 is slidably connected to the outer side of the limit rod 8, a hydraulic cavity 12 is opened on the rear side of the middle part of the accumulator housing 1, a buffer plate 6 is slidably connected inside the hydraulic cavity 12, and the buffer assembly includes a telescopic column 4, a spring 5, a buffer plate 6 and a second hydraulic oil channel 7, the telescopic column 4 is fixedly connected to the left and right sides of the rear part of the front end plate 2, the spring 5 is arranged on the outside of the telescopic column 4, the buffer plate 6 is fixedly connected to the rear side of the telescopic column 4, the second hydraulic oil channel 7 is opened in the middle of the buffer plate 6, and the buffer plate 6 is slidably connected inside the gas cavity 11.

[0027] The hydraulic oil is transported through the cooperation of the first hydraulic oil channel 3 and the second hydraulic oil channel 7, the piston body 9 is limited by the limit rod 8, the piston body 9 moves forward inside the hydraulic chamber 12 to impact the front end plate 2, the impact of the piston body 9 is buffered by the buffer plate 6, and then the telescopic column 4 and the spring 5 are squeezed forward by the buffer plate 6, thereby realizing that the piston type hydraulic accumulator can protect against impact and prevent the piston body 9 from impacting the front end plate 2 and causing equipment damage when the pressure inside the hydraulic chamber 12 drops suddenly.

[0028] Reference Figure 1-2 A gas chamber 11 is provided at the front middle of the accumulator housing 1 , and a gas channel 10 is provided at the middle rear middle of the accumulator housing 1 .

[0029] The gas is stored in the gas chamber 11 , and the discharge of the gas in the gas chamber 11 is controlled through the gas channel 10 .

[0030] Working principle: When the pressure in the hydraulic chamber 12 of the piston hydraulic accumulator drops suddenly, the piston body 9 moves forward inside the hydraulic chamber 12 to impact the front end plate 2. The impact of the piston body 9 is buffered by the buffer plate 6, and then the telescopic column 4 and the spring 5 are squeezed forward by the buffer plate 6. In this way, the piston hydraulic accumulator can protect against impact and prevent the piston body 9 from impacting the front end plate 2 and causing equipment damage when the pressure in the hydraulic chamber 12 drops suddenly.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An impact-resistant piston hydraulic accumulator, comprising an accumulator housing (1), characterized in that: The front side of the accumulator housing (1) is fixedly connected to a front end plate (2), a first hydraulic oil passage (3) is provided in the middle of the front end plate (2), a buffer assembly is provided on the rear side of the front end plate (2), limit rods (8) are fixedly connected to the left and right sides of the rear side of the inner wall of the accumulator housing (1), a piston body (9) is slidably connected to the outer side of the limit rod (8), and a gas chamber (11) is provided on the front side of the middle part of the accumulator housing (1).

2. The impact-resistant piston hydraulic accumulator according to claim 1, characterized in that: The buffer assembly comprises a telescopic column (4), a spring (5), a buffer plate (6) and a second hydraulic oil passage (7); the telescopic column (4) is fixedly connected to the left and right sides of the rear part of the front end plate (2); the spring (5) is arranged on the outside of the telescopic column (4); the buffer plate (6) is fixedly connected to the rear side of the telescopic column (4); and the second hydraulic oil passage (7) is opened in the middle of the buffer plate (6).

3. The impact-resistant piston hydraulic accumulator according to claim 1, characterized in that: A hydraulic chamber (12) is provided at the rear side of the middle portion of the accumulator housing (1).

4. The impact-resistant piston hydraulic accumulator according to claim 2, characterized in that: The buffer plate (6) is slidably connected inside the gas cavity (11).

5. The impact-resistant piston hydraulic accumulator according to claim 1, characterized in that: A gas channel (10) is provided in the middle of the rear side of the accumulator housing (1).

6. The impact-resistant piston hydraulic accumulator according to claim 2, characterized in that: One end of the spring (5) is fixedly connected to the telescopic column (4), and the other end of the spring (5) is fixedly connected to the buffer plate (6).

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