CN213017437U

CN213017437U - Hydraulic damper with two-stage damping function

Info

Publication number: CN213017437U
Application number: CN202021502903.7U
Authority: CN
Inventors: 张小虎; 陈汉斌; 张新宇
Original assignee: Jiangsu Xuanrui Vibration Damping Equipment Co ltd
Current assignee: Jiangsu Xuanrui Vibration Damping Equipment Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-04-20
Anticipated expiration: 2030-07-27

Abstract

The utility model relates to a hydraulic damper with two-stage damping function, including the main part, main part inner wall one end fixedly connected with bearing, fixedly connected with oil blanket in the bearing, the bearing in-connection has the transmission shaft, transmission shaft one end fixedly connected with input head, has cup jointed the working cylinder on the transmission shaft other end, and transmission shaft one end is connected with the piston, fixedly connected with reflux valve, first damping valve and second damping valve on the working cylinder, two stoppers of second damping valve inner chamber one end fixedly connected with, the utility model discloses the beneficial effect who reaches is: through fixedly connected with backward flow valve, first damping valve, second damping valve and piston cooperation on the working cylinder, realize the automatic switch-over of different low damping characteristic dampers and high damping characteristic damper, the power consumption of being convenient for reduces the vibration energy, through set up the through-hole that suits with the bolt on the working cylinder, is convenient for add hydraulic oil, through fixedly connected with oil blanket in the bearing, prevents the loss of hydraulic oil.

Description

Hydraulic damper with two-stage damping function

Technical Field

The utility model relates to a hydraulic damper, in particular to hydraulic damper with two-stage damping function belongs to attenuator equipment technical field.

Background

The damper is a device for providing resistance to movement and reducing movement energy, and is widely applied to various aspects, in some engineering application occasions, the damper is required to have low damping characteristic when the vibration amplitude is small, and high damping characteristic when the vibration amplitude is large, so as to reduce the vibration energy as soon as possible.

SUMMERY OF THE UTILITY MODEL

The utility model provides a hydraulic damper with two-stage damping function, through fixedly connected with backward flow valve, first damping valve, second damping valve and the cooperation of piston on the working cylinder, realize the automatic switch-over of different low damping characteristic dampers and high damping characteristic dampers, the energy of being convenient for to consume reduces vibration energy, through set up the through-hole that suits with the bolt on the working cylinder, is convenient for add hydraulic oil, through fixedly connected with oil blanket in the bearing, prevents the loss of hydraulic oil.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model relates to a hydraulic damper with two-stage damping function, which comprises a main body, wherein one end of the inner wall of the main body is fixedly connected with a bearing, an oil seal is fixedly connected in the bearing, a transmission shaft is connected in the bearing, one end of the transmission shaft is fixedly connected with an input head, a working cylinder is sleeved at the other end of the transmission shaft, a piston is connected at one end of the transmission shaft, a reflux valve, a first damping valve and a second damping valve are fixedly connected on the working cylinder, one end of the inner cavity of the second damping valve is fixedly connected with two limiting blocks, the other end of the inner cavity of the second damping valve is fixedly connected with a current limiter, one end of the current limiter is fixedly connected with a spring, an oil through opening is formed in the current limiter, a fixed block is fixedly connected to one end, far away from the input head, of the working cylinder, the fixed block is connected with a bolt in a threaded manner, and one end, far away from the working cylinder, of the bolt is fixedly connected with a connecting shaft.

As an optimal technical scheme of the utility model, the transmission shaft passes working cylinder fixed connection piston, the working cylinder is in the main part inner chamber.

As an optimal technical scheme of the utility model, return valve, first damping valve and second damping valve quantity all are two, the equal symmetric distribution of return valve, first damping valve and second damping valve is at the working cylinder both ends.

As a preferred technical scheme of the utility model, current limiter one end fixed connection stopper is kept away from to the spring, and the current limiter is close to two stoppers one end shape size and the adaptation of breach shape size between two stoppers.

As an optimized technical scheme of the utility model, first damping valve is low damping characteristic damping valve, and the second damping valve is high damping characteristic damping valve.

As a preferred technical scheme of the utility model, the bolt passes fixed block and working cylinder threaded connection, set up the through-hole that suits with the bolt on the working cylinder.

The utility model discloses the beneficial effect who reaches is: the utility model discloses a fixedly connected with backward flow valve, first damping valve, second damping valve and piston cooperation on the working cylinder realize the automatic switch-over of different low damping characteristic dampers and high damping characteristic damper, and the energy of reducing of being convenient for is through offering the through-hole that suits with the bolt on the working cylinder, is convenient for add hydraulic oil, through fixedly connected with oil blanket in the bearing, prevents the loss of hydraulic oil.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a schematic view of the exterior of the present invention;

FIG. 3 is a schematic structural diagram of a second damping valve of the present invention;

fig. 4 is a schematic structural diagram of the bearing of the present invention.

In the figure: 1. a main body; 2. a bearing; 3. a drive shaft; 4. an input head; 5. a working cylinder; 6. a piston; 7. a reflux valve; 8. a first damping valve; 9. a second damping valve; 10. a limiting block; 11. a current limiter; 12. a spring; 13. an oil through hole; 14. a fixed block; 15. a bolt; 16. a connecting shaft; 17. and (7) oil sealing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): as shown in FIGS. 1-4, the hydraulic damper with two-stage damping function of the present invention comprises a main body 1, a bearing 2 is fixedly connected to one end of the inner wall of the main body 1, an oil seal 17 is fixedly connected to the inside of the bearing 2, a transmission shaft 3 is connected to the inside of the bearing 2, an input head 4 is fixedly connected to one end of the transmission shaft 3, a working cylinder 5 is sleeved on the other end of the transmission shaft 3, a piston 6 is connected to one end of the transmission shaft 3, a reflux valve 7, a first damping valve 8 and a second damping valve 9 are fixedly connected to the working cylinder 5, two stoppers 10 are fixedly connected to one end of the inner cavity of the second damping valve 9, a current limiter 11 is fixedly connected to the other end of the inner cavity of the second damping valve 9, a spring 12 is fixedly connected to one end of the current limiter 11, an oil through opening 13 is formed, one end of the bolt 15 far away from the working cylinder 5 is fixedly connected with a connecting shaft 16.

The transmission shaft 3 is fixedly connected with a piston 6 through a working cylinder 5, and the working cylinder 5 is positioned in the inner cavity of the main body 1, so that the piston 6 can move conveniently; the number of the return valves 7, the first damping valves 8 and the second damping valves 9 is two, and the return valves 7, the first damping valves 8 and the second damping valves 9 are symmetrically distributed at two ends of the working cylinder 5, so that hydraulic oil can flow conveniently; one end of the spring 12, which is far away from the current limiter 11, is fixedly connected with the limiting blocks 10, and the shape and the size of one end of the current limiter 11, which is close to the two limiting blocks 10, are adapted to the shape and the size of a gap between the two limiting blocks 10, so that the current limiter 11 can block the gap when the oil pressure is too large; the first damping valve 8 is a low damping characteristic damping valve, and the second damping valve 9 is a high damping characteristic damping valve, so that the required damping valves can be switched conveniently; the bolt 15 penetrates through the fixing block 14 to be in threaded connection with the working cylinder 5, and a through hole matched with the bolt 15 is formed in the working cylinder 5, so that hydraulic oil can be conveniently added.

Specifically, when the utility model is used, firstly, when the input head 4 is subjected to a smaller external load, the transmission shaft 3 is driven to move, so that the piston 6 slides along the inner wall of the working cylinder 5 in a small range, hydraulic oil flows out from the first damping valve 8 and the second damping valve 9, then the external oil pressure of the working cylinder 5 is too large, oil returns to the working cylinder 5 from the return valve 7, then when the input head 4 is subjected to a larger external load, the piston 6 slides in a large range along the inner wall of the working cylinder 5, the piston 6 blocks the flow of the hydraulic oil in the first damping valve 8, the hydraulic oil is output only through the high damping characteristic damping valve 9, when the flow of the hydraulic oil is too large, the two ends of the flow restrictor 11 are pressed by the oil pressure, the spring 12 is close to the limiting block 10, so that the gap is reduced, the hydraulic oil flows out from the oil ports 13 at the two ends of the flow restrictor 11 more difficultly, a larger damping is provided, and, the piston 6 returns to the initial position and hydraulic oil starts to flow out again from the first damping valve 8 and the second damping valve 9, and the damping is reduced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The hydraulic damper with two-stage damping function is characterized by comprising a main body (1), one end of the inner wall of the main body (1) is fixedly connected with a bearing (2), an oil seal (17) is fixedly connected in the bearing (2), a transmission shaft (3) is connected in the bearing (2), one end of the transmission shaft (3) is fixedly connected with an input head (4), the other end of the transmission shaft (3) is sleeved with a working cylinder (5), one end of the transmission shaft (3) is connected with a piston (6), the working cylinder (5) is fixedly connected with a reflux valve (7), a first damping valve (8) and a second damping valve (9), one end of the inner cavity of the second damping valve (9) is fixedly connected with two limiting blocks (10), the other end of the inner cavity of the second damping valve (9) is fixedly connected with a current limiter (11), one end of the current limiter (11) is fixedly connected with a spring, the oil through opening (13) is formed in the flow restrictor (11), one end, far away from the input head (4), of the working cylinder (5) is fixedly connected with a fixing block (14), the fixing block (14) is connected with a bolt (15) in a threaded mode, and one end, far away from the working cylinder (5), of the bolt (15) is fixedly connected with a connecting shaft (16).

2. A hydraulic damper with two-stage damping function according to claim 1, characterized in that the transmission shaft (3) is fixedly connected with the piston (6) through the working cylinder (5), and the working cylinder (5) is in the inner cavity of the main body (1).

3. The hydraulic damper with two-stage damping function according to claim 1, characterized in that the number of the return valve (7), the first damping valve (8) and the second damping valve (9) is two, and the return valve (7), the first damping valve (8) and the second damping valve (9) are symmetrically distributed at two ends of the working cylinder (5).

4. The hydraulic damper with two-stage damping function according to claim 1, characterized in that the end of the spring (12) far away from the flow restrictor (11) is fixedly connected with the limiting blocks (10), and the shape and the size of the end of the flow restrictor (11) near the two limiting blocks (10) are adapted to the shape and the size of the gap between the two limiting blocks (10).

5. A hydraulic damper with two-stage damping function according to claim 1, characterized in that the first damping valve (8) is a low damping characteristic damping valve and the second damping valve (9) is a high damping characteristic damping valve.

6. The hydraulic damper with two-stage damping function according to claim 1, wherein the bolt (15) penetrates through the fixing block (14) to be in threaded connection with the working cylinder (5), and a through hole matched with the bolt (15) is formed in the working cylinder (5).