Filling type damping support

Abstract

The utility model discloses a filling type damping support which comprises a piston cylinder, a first piston pressing plate arranged in the piston cylinder in a sliding mode and a piston rod connected to one end of the first piston pressing plate, the piston cylinder is filled with damping media, and a medium channel for the damping media to flow through is arranged between the piston cylinder and the first piston pressing plate. And the closure area of the medium channel is in a gradually decreasing state in the stroke direction of the first piston pressing plate. According to the utility model, the closure area is expanded in advance in the initial state of movement, so that the absorption rate of kinetic energy absorption is increased, rigid collision is avoided, and the closure area is decreased progressively in the movement process of the piston, so that the damping effect is not influenced.

Description

Technical Field

[0001] The utility model belongs to the technical field of shock-absorbing supports, in particular to a filled shock-absorbing support. Background Art

[0002] The shock-absorbing bearing, also known as the shock absorber, is generally composed of a piston, a piston rod and a piston chamber. The piston rod drives the piston to perform piston motion in the piston chamber. Usually, the kinetic energy of the piston rod is absorbed by filling the piston chamber with a damping medium to achieve shock absorption.

[0003] However, since the cross-sectional area of ​​the damping channel on the piston is constant, the rate at which it absorbs kinetic energy is constant. When the kinetic energy is too large, the kinetic energy is not absorbed in time, which will cause a rigid collision. Utility Model Content

[0004] The utility model aims at solving the problems existing in the prior art and proposes the following technical solutions:

[0005] A filled shock-absorbing bearing comprises a piston cylinder, a first piston pressure plate slidably arranged in the piston cylinder, and a piston rod connected to one end of the first piston pressure plate. The piston cylinder is filled with a damping medium. A medium channel for the damping medium to flow is provided between the piston cylinder and the first piston pressure plate. The cross-sectional area of ​​the medium channel decreases along the stroke direction of the first piston pressure plate.

[0006] As a preferred embodiment of the above technical solution, there is a gap between the first piston pressure plate and the piston cylinder, the medium channel is the gap, and the cross-sectional area in the piston cylinder along the stroke direction of the first piston pressure plate gradually decreases.

[0007] As a preferred embodiment of the above technical solution, a first opening is provided on the first piston pressure plate, and a second piston pressure plate is rotatably connected to the end surface of the first piston pressure plate provided with the first opening, and a second opening corresponding to the first opening is provided on the second piston pressure plate, and the first opening and the second opening cooperate to form a medium channel as a damping medium, a channel is provided in the piston rod, and an insertion rod is installed in the piston cylinder, and the insertion rod sequentially penetrates the second piston pressure plate and the first piston pressure plate and is inserted into the channel, a spiral slide is provided on the insertion rod, and a slider slidably arranged in the spiral slide is provided in the second piston pressure plate;

[0008] The second piston pressing plate is driven to generate a stroke and rotate around the insertion rod, so that the cross-sectional area of ​​the medium channel is gradually reduced.

[0009] As a preferred embodiment of the above technical solution, there is an overlapping portion between the first opening and the second opening on the horizontal projection plane in the stroke state.

[0010] As a preferred embodiment of the above technical solution, a supporting plate is installed at the free end of the piston rod.

[0011] As a preferred embodiment of the above technical solution, an elastic member is connected between the first piston pressure plate and the piston cylinder.

[0012] The beneficial effects of the utility model are:

[0013] In the present application, the cross-flow area is pre-expanded in the initial state of movement to increase the absorption rate of kinetic energy and avoid the occurrence of rigid collisions, and the cross-flow area of ​​the piston is gradually reduced during the movement to ensure that the shock absorption effect is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The overall structural diagram of the filled shock-absorbing support in Example 1 is shown;

[0015] Figure 2 The overall structural schematic diagram of the filled shock-absorbing bearing in Example 2 is shown.

[0016] Legend:

[0017] 1. Support plate; 2. Piston rod; 3. First piston pressure plate; 4. Elastic member; 5. Piston cylinder; 6. First opening; 7. Second piston pressure plate; 8. Second opening; 9. Slider; 10. Spiral slideway; 11. Channel; 12. Insert rod. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments.

[0019] The present application aims to address the problem in the prior art that the cross-sectional area of ​​the damping channel on the piston is constant, which may lead to rigid collisions during the shock absorption process. The cross-sectional area is pre-expanded in the initial state of movement to increase the absorption rate of kinetic energy and avoid the occurrence of rigid collisions. The cross-sectional area of ​​the piston is gradually reduced during the movement to ensure that the shock absorption effect is not affected.

[0020] Example 1

[0021] Figure 1 The overall structural diagram of the filled shock-absorbing support in Example 1 is shown; Figure 1In the invention, the filled shock-absorbing support comprises a piston cylinder 5, a first piston pressure plate 3 slidably arranged in the piston cylinder 5, and a piston rod 2 connected to one end of the first piston pressure plate 3. The piston cylinder 5 is filled with a damping medium, and there is a gap between the first piston pressure plate 3 and the piston cylinder 5; the gap serves as a medium channel for the damping medium. When the first piston pressure plate 3 is pressed and slides in the piston cylinder 5, the damping medium flows through the medium channel and absorbs the kinetic energy of the first piston pressure plate 3, thereby realizing the shock-absorbing function; the cross-sectional area of ​​the piston cylinder 5 along the stroke direction of the first piston pressure plate 3 gradually decreases to realize the gap, that is, the medium channel is along the first piston pressure plate 3. The cross-flow area of ​​the pressure plate 3 decreases in the stroke direction; since the cross-flow area is pre-expanded in the initial state of movement, the absorption rate of kinetic energy is increased to avoid the occurrence of rigid collision, and the cross-flow area of ​​the piston is reduced during the movement to ensure that the shock absorption effect is not affected; a support plate 1 is installed at the free end of the piston rod 2, and the support plate 1 can increase the area of ​​the pressure-bearing surface to reduce the pressure; an elastic member 4 is connected between the first piston pressure plate 3 and the piston cylinder 5, and under normal conditions, the first piston pressure plate 3 is squeezed by the elastic member 4 and is in the initial state; the initial state of the first piston pressure plate 3 means that the cross-flow area of ​​the medium channel is the largest in the current state.

[0022] Example 2

[0023] Figure 2The overall structural diagram of the filled shock-absorbing bearing in Example 2 is shown, which includes a piston cylinder 5, a first piston pressure plate 3 slidably arranged in the piston cylinder 5, and a piston rod 2 connected to one end of the first piston pressure plate 3. The piston cylinder 5 is filled with a damping medium, and a first opening 6 is opened on the first piston pressure plate 3; wherein the first opening 6 serves as a medium channel for the damping medium. When the first piston pressure plate 3 is pressed and slides in the piston cylinder 5, the damping medium flows through the medium channel and absorbs the kinetic energy of the first piston pressure plate 3, thereby realizing the shock-absorbing function; A second piston pressure plate 7 is rotatably connected to the end surface of a piston pressure plate 3 having a first opening 6, and a second opening 8 corresponding to the first opening 6 is formed on the second piston pressure plate 7, and the first opening 6 and the second opening 8 cooperate to form a medium channel as a damping medium, a channel 11 is formed in the piston rod 2, and a plug rod 12 is installed in the piston cylinder 5, and the plug rod 12 sequentially penetrates the second piston pressure plate 7 and the first piston pressure plate 3 and is inserted into the channel 11, a spiral slide 10 is formed on the plug rod 12, and a sliding device is provided in the second piston pressure plate 7 A slider 9 is placed in the spiral slide 10; the first port 6 and the second port 8 form a medium channel for the damping medium to pass through. When the first piston pressure plate 3 is pressed and slides in the piston cylinder 5, the damping medium flows through the medium channel and absorbs the kinetic energy of the first piston pressure plate 3, thereby realizing the shock absorption function; the first port 6 and the second port 8 have an overlapping part on the horizontal projection plane in the stroke state; since the medium channel formed by the first port 6 and the second port 8 is the maximum cross-sectional area in the initial state of movement, the absorption rate of kinetic energy absorption is increased to avoid the occurrence of rigid collision, so that the piston decreases the cross-sectional area under the spiral sliding action of the spiral slide 10 during the movement, so as to ensure that the shock absorption effect is not affected; the free end of the piston rod 2 is installed with a support plate 1, and the support plate 1 can increase the area of ​​the pressure-bearing surface to reduce the pressure; an elastic member 4 is connected between the first piston pressure plate 3 and the piston cylinder 5. Under normal conditions, the first piston pressure plate 3 is squeezed by the elastic member 4 and is in the initial state; the initial state of the first piston pressure plate 3 means that the cross-sectional area of ​​the medium channel is the largest in the current state.

[0024] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A filled shock-absorbing bearing, comprising a piston cylinder (5), a first piston pressure plate (3) slidably arranged in the piston cylinder (5), and a piston rod (2) connected to one end of the first piston pressure plate (3), wherein the piston cylinder (5) is filled with a damping medium, and characterized in that: A medium channel for the damping medium to flow is provided between the piston cylinder (5) and the first piston pressure plate (3), and the cross-sectional area of ​​the medium channel is in a decreasing state along the stroke direction of the first piston pressure plate (3).

2. The filled shock-absorbing bearing according to claim 1, characterized in that: There is a gap between the first piston pressure plate (3) and the piston cylinder (5), the medium channel is the gap, and the cross-sectional area in the piston cylinder (5) along the stroke direction of the first piston pressure plate (3) gradually decreases.

3. The filled shock-absorbing bearing according to claim 1, characterized in that: The first piston pressure plate (3) is provided with a first opening (6), and a second piston pressure plate (7) is rotatably connected to the end surface of the first piston pressure plate (3) provided with the first opening (6), and the second piston pressure plate (7) is provided with a second opening (8) corresponding to the first opening (6), and the first opening (6) and the second opening (8) cooperate to form a medium channel for a damping medium, a channel (11) is provided in the piston rod (2), and an insert rod (12) is installed in the piston cylinder (5), and the insert rod (12) sequentially penetrates the second piston pressure plate (7) and the first piston pressure plate (3) and is then inserted into the channel (11), a spiral slideway (10) is provided on the insert rod (12), and the second piston pressure plate (7) has a slider (9) slidably arranged in the spiral slideway (10); The second piston pressure plate (7) is driven to generate a stroke and rotate around the insertion rod (12), so that the cross-sectional area of ​​the medium channel gradually decreases.

4. The filled shock-absorbing bearing according to claim 3, characterized in that: The first opening (6) and the second opening (8) have overlapping portions on a horizontal projection plane in a stroke state.

5. The filled shock-absorbing bearing according to claim 2 or 3, characterized in that: A supporting plate (1) is mounted on the free end of the piston rod (2).

6. The filled shock-absorbing bearing according to claim 2 or 3, characterized in that: An elastic member (4) is connected between the first piston pressure plate (3) and the piston cylinder (5).

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