Hydraulic damping device

Abstract

The utility model belongs to the field of damping devices, and particularly relates to a hydraulic damping device which comprises a shell, a base is fixedly installed at the lower end of the shell, a piston is connected in the shell in a sliding mode, a damping rod is fixedly connected to the upper end of the piston, and a conveying pipe is fixedly connected to the upper end of the base. A damping pipe is fixedly connected to the interior of the upper end of the conveying pipe, a bidirectional damping mechanism is arranged in the damping pipe, a conical cover is fixedly connected to the interior of the base, a limiting ring is fixedly connected to the upper end of the base, a first spring is arranged on the base, and a sealing pipe is fixedly connected to the upper end of the shell. The damping pipe, the conveying pipe, the two-way damping mechanism and other structures are additionally arranged on the shell, liquid can be input into the conveying pipe in the moving process of the piston, then secondary damping is conducted through the damping cover in the damping pipe, and therefore the damping effect can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to damping device technical field, concretely is a kind of hydraulic damping device. BACKGROUND

[0002] Hydraulic damping device is the resistance of liquid flow in its shell interior to impact force buffering, according to the patent authorized announcement No.CN109667874B proposes a kind of hydraulic damping device, the invention discloses a kind of hydraulic damping device, including cylinder body, piston assembly, oil storage device is located at the end cover and base of cylinder body two ends;Piston assembly and cylinder body sliding fit, oil storage device with second chamber is communicated;Piston rod passes through the end cover and is fixedly connected with piston assembly;Piston assembly and piston rod are provided with the first oil return channel of facing base;The first oil return channel depth is compatible with the stroke of piston rod;Piston rod is located on the side of first chamber and is radially provided with at least one first oil hole;

[0003] But the damping device in prior art is only through the internal conical cover to reduce the flow area of liquid in the process of using, so that the damping effect of liquid flow resistance is realized, but when impact force is too large, damping effect is poor, so that effective damping cannot be carried out, and the internal pressure of shell increases in the process of damping, and the internal liquid is prone to leakage. Therefore, the prior art needs to be improved. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of hydraulic damping device, solve the problem of poor damping effect and poor sealing of damping rod.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of hydraulic damping device, including shell, the lower end of the shell is fixedly installed with base, the inside of the shell is slidably connected with piston, the upper end of the piston is fixedly connected with damping rod, the upper end of the base is fixedly connected with conveying pipe, the upper end inside of the conveying pipe is fixedly connected with damping pipe, the inside of the damping pipe is provided with bidirectional damping mechanism, the inside of the base is fixedly connected with conical cover, the upper end of the base is fixedly connected with limit ring, spring one is arranged on the base, the upper end of the shell is fixedly connected with sealing pipe, the inside of the sealing pipe is filled with carbon fiber filler, the upper end inside of the sealing pipe is connected with end cover by screw thread, the inside of the end cover is fixedly connected with sealing ring, the upper end inside of the shell is fixedly connected with sealing sleeve.

[0006] Preferably, the outer side of the piston is sleeved with a sealing ring, which is slidably connected with the inner wall of the shell. The sealing ring can seal the connection between the piston and the shell.

[0007] Preferably, one end of the spring one is in contact with the piston, the other end of the spring one is fixedly connected with the base, the spring one is in sliding connection with the limiting ring, and the spring one can assist the piston in resetting.

[0008] Preferably, the sealing sleeve is in sliding connection with the damping rod, the sealing ring is in sliding connection with the damping rod, and the carbon fiber filler is in sliding connection with the damping rod, so that the sealing ring can seal the connecting position of the damping rod and the end cover.

[0009] Preferably, the end cover is in contact with the carbon fiber filler, the sealing ring and the sealing sleeve are both in contact with the carbon fiber filler, the carbon fiber filler is in contact with the shell, and the end cover blocks the carbon fiber filler.

[0010] Preferably, the bidirectional damping mechanism comprises a fixed strip, two fixed strips symmetrically distributed upwards and downwards are fixedly connected in the damping pipe, a connecting nail is in sliding connection in the fixed strip, two damping covers symmetrically distributed are fixedly connected in the damping pipe, a sealing plug is fixedly connected to one end of the connecting nail away from the damping cover, and a spring two is arranged on the outer side of the connecting nail, so that the damping cover can increase the flow resistance of the liquid.

[0011] Preferably, the sealing plug is in sliding connection with the damping pipe, one end of the spring two is fixedly connected with the sealing plug, and the other end of the spring two is fixedly connected with the fixed strip, so that the spring two can drive the sealing plug to reset automatically through the elastic force.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1. The damping pipe, the conveying pipe and the bidirectional damping mechanism are arranged on the shell, liquid can be input into the conveying pipe during movement of the piston, and then the damping cover in the damping pipe is used for secondary damping, so that the damping effect can be effectively improved.

[0014] 2. The sealing pipe, the carbon fiber filler and the sealing sleeve are arranged on the shell, the connecting position between the damping rod and the shell can be sealed through the double-layer sealing structure of the carbon fiber filler and the sealing sleeve during use, and the sealing property of the damping device can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure perspective view of the utility model;

[0016] Figure 2 It is a perspective sectional view of the utility model; Figure 1

[0017] Figure 3 ​The utility model discloses a Figure 2 The front view section view amplification drawing of the damping pipe of

[0018] Figure 4 The utility model discloses a Figure 2 The A department structure amplification drawing of

[0019] In the drawing: 1, shell, 2, base, 3, piston, 4, damping rod, 5, delivery pipe, 6, damping pipe, 7, two -way damping mechanism, 8, sealing ring, 9, conical cover, 10, limit ring, 11, spring one, 12, sealing pipe, 13, carbon fiber filling, 14, end cover, 15, sealing ring, 16, sealing sleeve, 71, fixed strip, 72, connecting nail, 73, sealing plug, 74, spring two, 75, damping cover. Specific implementation

[0020] The technical scheme in the embodiments of the utility model will be described below in a clear and complete manner in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0021] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 A kind of hydraulic damping device, including shell 1, the lower end of shell 1 is fixedly installed with base 2, the inside of shell 1 is slidably connected with piston 3, the upper end of piston 3 is fixedly connected with damping rod 4, the upper end of base 2 is fixedly connected with delivery pipe 5, the upper end inside of delivery pipe 5 is fixedly connected with damping pipe 6, the inside of damping pipe 6 is provided with two-way damping mechanism 7, the inside of base 2 is fixedly connected with conical cover 9, the upper end of base 2 is fixedly connected with limit ring 10, spring one 11 is arranged on base 2, the upper end of shell 1 is fixedly connected with sealing pipe 12, carbon fiber filling 13 is filled in the inside of sealing pipe 12, end cover 14 is connected in the inside of the upper end of sealing pipe 12 by screw thread, sealing ring 15 is fixedly connected in the inside of end cover 14, sealing sleeve 16 is fixedly connected in the inside of the upper end of shell 1.

[0022] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4The outer side of the piston 3 is sleeved with a sealing ring 8, the sealing ring 8 is in sliding connection with the inner wall of the shell 1, the sealing ring 8 can seal the connecting part of the piston 3 and the shell 1, one end of the spring 11 is in contact with the piston 3, the other end of the spring 11 is fixedly connected with the base 2, the spring 11 is in sliding connection with the limiting ring 10, the spring 11 can assist the piston 3 to reset, the sealing sleeve 16 is in sliding connection with the damping rod 4, the sealing ring 15 is in sliding connection with the damping rod 4, the carbon fiber filler 13 is in sliding connection with the damping rod 4, the sealing ring 15 can seal the connecting part of the damping rod 4 and the end cover 14, the end cover 14 is in contact with the carbon fiber filler 13, the sealing ring 15 and the sealing sleeve 16 are in contact with the carbon fiber filler 13, the carbon fiber filler 13 is in contact with the shell 1, and the end cover 14 blocks the carbon fiber filler 13.

[0023] Please refer to Figure 2 、 Figure 3 The bidirectional damping mechanism 7 comprises a fixed strip 71, two fixed strips 71 symmetrically distributed upwards and downwards are fixedly connected in the damping pipe 6, a connecting nail 72 is in sliding connection in the fixed strip 71, two damping covers 75 are fixedly connected in the damping pipe 6, a sealing plug 73 is fixedly connected to the end, away from the damping cover 75, of the connecting nail 72, a spring 74 is arranged on the outer side of the connecting nail 72, the damping cover 75 can increase the resistance of liquid flow, the sealing plug 73 is in sliding connection with the damping pipe 6, one end of the spring 74 is fixedly connected with the sealing plug 73, and the other end of the spring 74 is fixedly connected with the fixed strip 71, and the spring 74 can drive the sealing plug 73 to automatically reset through the elastic force.

[0024] The specific implementation process of the utility model is as follows: in use, the damping rod 4 drives the piston 3 to move, when the piston 3 moves to the direction of pressing the spring 11, the hydraulic oil flows into the inside of the base pipe 2 through the conical cover 9 in the inside of the base 2, and then flows into the inside of the damping pipe 6 through the conveying pipe 5, when the hydraulic oil contacts the damping pipe 6, the sealing plug 73 can be slid to the inside of the damping pipe 6, and the spring 74 is compressed, when the sealing plug 73 is separated from the damping pipe 6, the hydraulic oil can be injected into the inside of the damping pipe 6, and then flows into the inside of the damping cover 75, and the resistance is increased again in the inside of the damping cover 75, so that the damping effect can be effectively improved, and the damping rod 4 can be sealed by the double-layer sealing mode of the carbon fiber filler 13 and the sealing sleeve 16 during the movement of the damping rod 4, so that the leakage can be effectively avoided.

[0025] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A hydraulic damping device, comprising a housing (1), characterized in that: A base (2) is fixedly installed at the lower end of the outer shell (1). A piston (3) is slidably connected inside the outer shell (1). A damping rod (4) is fixedly connected at the upper end of the piston (3). A conveying pipe (5) is fixedly connected at the upper end of the base (2). A damping tube (6) is fixedly connected inside the upper end of the conveying pipe (5). A bidirectional damping mechanism (7) is provided inside the damping tube (6). A conical cover (9) is fixedly connected inside the base (2). A limit ring (10) is fixedly connected at the upper end of the base (2). A spring (11) is provided on the base (2). A sealing tube (12) is fixedly connected at the upper end of the outer shell (1). A carbon fiber filler (13) is filled inside the sealing tube (12). An end cap (14) is threadedly connected inside the upper end of the sealing tube (12). A sealing ring (15) is fixedly connected inside the end cap (14). A sealing sleeve (16) is fixedly connected inside the upper end of the outer shell (1).

2. The hydraulic damping device according to claim 1, characterized in that: A sealing ring (8) is fitted on the outer side of the piston (3), and the sealing ring (8) is slidably connected to the inner wall of the outer shell (1).

3. The hydraulic damping device according to claim 1, characterized in that: One end of the spring (11) is in contact with the piston (3), the other end of the spring (11) is fixedly connected to the base (2), and the spring (11) is slidably connected to the limiting ring (10).

4. A hydraulic damping device according to claim 1, characterized in that: The sealing sleeve (16) is slidably connected to the damping rod (4), the sealing ring (15) is slidably connected to the damping rod (4), and the carbon fiber filler (13) is slidably connected to the damping rod (4).

5. A hydraulic damping device according to claim 1, characterized in that: The end cap (14) is in contact with the carbon fiber filler (13), the sealing ring (15) and the sealing sleeve (16) are both in contact with the carbon fiber filler (13), and the carbon fiber filler (13) is in contact with the outer shell (1).

6. A hydraulic damping device according to claim 1, characterized in that: The bidirectional damping mechanism (7) includes a fixing bar (71). Two fixing bars (71) are symmetrically distributed vertically and vertically fixedly connected inside the damping tube (6). A connecting pin (72) is slidably connected inside the fixing bar (71). Two damping covers (75) are symmetrically distributed inside the damping tube (6). A sealing plug (73) is fixedly connected to the end of the connecting pin (72) away from the damping cover (75). A spring (74) is provided on the outside of the connecting pin (72).

7. A hydraulic damping device according to claim 6, characterized in that: The sealing plug (73) is slidably connected to the damping tube (6), one end of the second spring (74) is fixedly connected to the sealing plug (73), and the other end of the second spring (74) is fixedly connected to the fixing strip (71).

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