Shock absorber

Abstract

The shock absorber is characterized in that the shock absorber comprises a cylinder body, a piston rod, an oil storage piston and a spring, the piston rod is located in the cylinder body, a piston is arranged on the piston rod, the piston is located in the cylinder body, an oil passing hole is formed in the piston, the interior of the cylinder body is divided into an upper oil cavity and a lower oil cavity by the piston, and the upper oil cavity and the lower oil cavity are communicated through the oil passing hole; the oil storage piston is located in the cylinder body and located at the lower end of the cylinder body, a lower oil cavity is formed between the oil storage piston and the piston, and the spring is arranged below the oil storage piston and provides support for the oil storage piston. Through combination of flowing of hydraulic oil and sliding of the oil storage piston, effective absorption and dispersion of impact energy are achieved. The flowing of the hydraulic oil plays a preliminary hydraulic buffering role, and the sliding of the oil storage piston under the action of the spring further enhances the buffering effect, so that the whole device can keep good buffering performance under different impact strengths.

Description

Technical Field

[0001] The invention relates to a buffer device, in particular to a shock absorber. Background Art

[0002] In the field of mechanical engineering, especially in situations where impact or vibration loads need to be borne, such as heavy machinery, automated production lines, lifting equipment, vehicle suspension systems, etc., traditional rigid support structures often cannot meet the needs of effective absorption and dispersion of impact energy, which will not only accelerate the wear of the equipment, but may also cause safety hazards and affect the stability and service life of the equipment.

[0003] Traditional buffer devices mostly use elastic elements such as mechanical springs or rubber, but these elements are prone to failure under extreme working conditions, and have a limited adjustment range, making it difficult to adapt to complex and changing impact environments. Although a single hydraulic buffer device can provide a good buffering effect, it lacks sufficient elastic recovery ability, has a complex structure, and has high maintenance costs.

[0004] Therefore, the market urgently needs a buffer device that can effectively absorb impact energy, achieve elastic recovery, and has a simple structure and easy maintenance to meet the needs under different working conditions. Summary of the invention

[0005] The purpose of the present invention is to provide a shock absorber, which aims to achieve efficient absorption and dispersion of impact energy by combining the flow of hydraulic oil with the energy storage and release of the spring, while improving the stability and safety of the equipment.

[0006] The present invention is implemented by adopting the following technical scheme: a shock absorber, characterized in that it includes a cylinder body, a piston rod, an oil storage piston, and a spring, wherein the piston rod is located in the cylinder body, a piston is arranged on the piston rod, the piston is located in the cylinder body, an oil hole is opened on the piston, the piston divides the interior of the cylinder body into two upper and lower oil chambers, the oil hole connects the upper and lower oil chambers, the oil storage piston is located in the cylinder body and at the lower end of the cylinder body, the lower oil chamber is between the oil storage piston and the piston, and the spring is arranged below the oil storage piston to provide support for the oil storage piston.

[0007] Furthermore, a sealing cover is disposed at the upper end of the cylinder body and a blocking cover is disposed at the lower end thereof.

[0008] Furthermore, a guide rod is provided below the oil storage piston, and the guide rod is inserted into the blocking cover.

[0009] Furthermore, the spring is arranged between the oil storage piston and the blocking cover.

[0010] Furthermore, an oil regulating valve is provided in the oil hole on the piston.

[0011] Furthermore, after the oil pressure in the cylinder body becomes constant, the piston rod is acted upon by an external force, the piston squeezes the lower oil chamber of the cylinder, the pressure in the lower oil chamber increases, the hydraulic oil enters the upper oil chamber through the oil hole, the hydraulic oil squeezes the oil storage piston to increase the volume of the lower oil chamber, and at this time the spring is compressed to store energy.

[0012] Furthermore, after the oil pressure in the cylinder body becomes constant and the external force acting on the piston rod decreases, the spring releases stored energy, extends and lifts the oil storage piston, thereby reducing the volume of the lower oil chamber, and the hydraulic oil flows back to the upper oil chamber through the oil hole, while pushing the piston outward.

[0013] The vibration absorber of the present invention has the following beneficial effects: High-efficiency buffering capacity: Through the combination of hydraulic oil flow and oil storage piston sliding, the impact energy is effectively absorbed and dispersed. The flow of hydraulic oil plays a preliminary hydraulic buffering role, and the sliding of the oil storage piston under the action of the spring further enhances the buffering effect, so that the entire device can maintain good buffering performance under different impact intensities.

[0014] Elastic recovery ability: As an energy storage mechanism, the spring can not only store energy during the impact process, but also release energy after the impact, pushing the oil storage piston to reset and restore the cylinder to its original state. This elastic recovery ability allows the buffer cylinder to be used repeatedly, extending the service life of the equipment.

[0015] Adjustment flexibility: By adjusting the strength of the spring and the size of the oil hole, the load-bearing capacity and impact adjustment capacity of the buffer cylinder can be flexibly adjusted to meet the needs of different working conditions. This adjustment flexibility improves the applicability and reliability of the buffer cylinder.

[0016] Simple structure and convenient maintenance: The buffer oil cylinder of the present invention is composed of simple components such as a cylinder body, a piston, a piston rod, an oil storage piston, a spring, a baffle cover and a connecting seat, etc. It has a compact structure and is easy to manufacture and install. At the same time, the connection between the components is firm and reliable, and the maintenance cost is low.

[0017] Improve equipment stability and safety: By effectively absorbing and dispersing impact energy, the buffer cylinder can significantly reduce the vibration and noise of the equipment under impact load, and improve the stability and safety of the equipment. This is of great significance for protecting equipment from damage, extending service life and ensuring personnel safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. The drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 It is a cross-sectional schematic diagram of the present invention; In the figure, 1-cylinder body, 2-piston rod, 3-connecting seat, 4-sealing cover, 5-oil storage piston, 6-blocking cover, 7 spring, 8-check ring, 9-oil regulating valve, 10-guide rod, 11-piston. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] like Figure 1As shown, a shock absorber includes a cylinder body 1, a piston 11, a piston rod 2, an oil storage piston 5, a guide rod 10, a spring 7, a baffle 6, a check ring 8, a sealing cover 4, an oil regulating valve 9 and a connecting seat 3. The cylinder body 1 is used as the main pressure-bearing component and hydraulic oil container. The cylinder body 1 has an oil hole for flushing oil into the cylinder. The piston 11 is provided with a threaded hole, and a through hole is provided at the bottom of the threaded hole, which runs through the entire piston 11; an oil regulating valve 9 is installed in the threaded hole, and an oil hole is provided on the oil regulating valve 9, through which the hydraulic oil can flow freely in the upper and lower chambers. The oil flow through the oil hole first has a certain buffering effect, and the oil regulating valve can be adjusted to change the size of the oil hole to adjust the buffering effect. The piston rod 2 is connected to the piston 11 to transmit external pressure or impact to the piston 11. The oil storage piston 5 is used to seal the oil cylinder to prevent hydraulic oil leakage. At the same time, the oil storage piston 5 can slide inside the cylinder body 1 when under pressure; the rear end of the oil storage piston 5 is connected to the guide rod 10, and the guide rod 10 passes through the spring 7 to prevent the spring 7 from moving. The sealing cover 4 forms an independent oil distribution chamber inside the oil cylinder. The spring 7 serves as an energy storage mechanism, which lifts the oil storage piston 5 to control the oil storage volume, control the bearing capacity of the buffer oil cylinder and adjust the impact capacity. When the oil pressure increases, the force on the oil storage piston 5 increases, and the spring 7 shrinks under pressure. The spring strength directly affects the ability of the buffer oil cylinder to adjust the impact. At the same time, the force on the piston increases as the oil pressure increases, the external support force increases, and the bearing capacity of the buffer oil cylinder also increases. The cover 6 is used to fix the spring 7 to provide support for energy storage, and at the same time, the spring tightness can be adjusted to adjust the bearing capacity and impact capacity of the buffer oil cylinder. The stop ring 8 locks the cover 6 to prevent the cover from loosening and displacement during use. The connecting seat 3 connects the piston rod 2 and the external impact, so that the external impact can be smoothly transmitted to the piston rod 2.

[0023] When the oil pressure in the cylinder body 1 is constant, the piston 11 is pressed and moved by external force, the pressure in the lower oil chamber increases, and the pressure in the upper oil chamber decreases, and the hydraulic oil enters the upper oil chamber through the oil hole. The upper oil chamber is occupied by the piston rod 2. When the piston 11 moves the same distance, the amount of oil discharged from the lower oil chamber is greater than the capacity of the upper oil chamber. Therefore, the excess hydraulic oil will squeeze the oil storage piston 5 to increase the volume of the lower oil chamber. At this time, the spring 7 is pressurized to store energy, so that the entire buffer cylinder has buffering capacity. At the same time, the oil hole has a flow limiting effect, which further enhances the hydraulic buffering function, so that the entire buffer cylinder integrates hydraulic buffering and elastic buffering.

[0024] When the oil pressure in the cylinder 1 is constant, it is reduced by the external force. At this time, the energy stored in the spring 7 is released, and the spring 7 extends to lift the oil storage piston 5, shrinking the volume of the lower oil chamber, so that the hydraulic oil in the lower oil chamber is pressurized to enter the upper oil chamber through the oil hole, and then push the piston 11 outward to maintain the overall platform of the equipment, ensuring that the equipment is fully in contact with the ground.

[0025] The above embodiments describe the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the changes and modifications made by those skilled in the art shall be within the scope of protection of the appended claims of the present invention without departing from the spirit and scope of the present invention.

Claims

1. A shock absorber, characterized in that: The invention comprises a cylinder body (1), a piston rod (2), an oil storage piston (5), and a spring (7), wherein the piston rod (2) is located in the cylinder body (1), a piston (11) is arranged on the piston rod (2), the piston (11) is located in the cylinder body (1), an oil hole is opened on the piston (11), the piston (11) divides the interior of the cylinder body (1) into two upper and lower oil chambers, the oil hole connects the upper and lower oil chambers, the oil storage piston (5) is located in the cylinder body (1) and at the lower end of the cylinder body (1), the lower oil chamber is between the oil storage piston (5) and the piston (11), and the spring (7) is arranged below the oil storage piston (5) to provide support for the oil storage piston (5).

2. A shock absorber according to claim 1, characterized in that: The cylinder body (1) is provided with a sealing cover (4) at the upper end and a blocking cover (6) at the lower end.

3. A shock absorber according to claim 2, characterized in that: A guide rod (10) is provided below the oil storage piston (5), and the guide rod (10) is inserted into the blocking cover (6).

4. A vibration absorber according to claim 2, characterized in that: The spring (7) is arranged between the oil storage piston (5) and the stop cover (6).

5. A shock absorber according to claim 1, characterized in that: An oil regulating valve (9) is provided in the oil hole on the piston (11).

6. A shock absorber according to claim 1, characterized in that: After the oil pressure in the cylinder body (1) becomes constant, the piston rod (2) is acted upon by an external force, the piston squeezes the lower oil chamber of the oil cylinder, the pressure in the lower oil chamber increases, the hydraulic oil enters the upper oil chamber through the oil hole, the hydraulic oil squeezes the oil storage piston (5) to increase the volume of the lower oil chamber, and at this time the spring (7) is pressurized to store energy.

7. A vibration absorber according to claim 1, characterized in that: After the oil pressure in the cylinder (1) becomes constant, when the external force acting on the piston rod (2) decreases, the spring (7) releases the stored energy, stretches and lifts the oil storage piston (5), thereby reducing the volume of the lower oil chamber, and the hydraulic oil flows back to the upper oil chamber through the oil hole, while pushing the piston (11) outward.

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