A bidirectional damping adjustable hydraulic rod

Abstract

The utility model discloses a two -way adjustable type hydraulic pressure rod of damping, including cylinder body, push rod and piston, the piston is located in the cylinder body and slides, and push rod end connects the piston, and the head end sealedly passes out cylinder body, two bypass oil channels are connected between the both ends of cylinder body, and the bypass oil channel all has the check valve and adjustable type hand throttle valve in series, and the flow direction of check valve is opposite, and a plurality of damping holes are seted up on the piston, and do not install check valve. The utility model is two -way damping, namely, can produce damping to draw out and retract, can be applicable to the working condition that both directions need damping, and the maximum damping is provided by the damping hole on the piston, and two adjustable type hand throttle valves are all in the closed state when the maximum damping, if needing to adjust the damping of drawing out or retracting, then adjusting corresponding adjustable type hand throttle valve can, when adjustable type hand throttle valve opens completely, the damping is minimum.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic machinery technology, and in particular to a bidirectional damping adjustable hydraulic rod. Background Technology

[0002] In many applications, the speed of extension and retraction require different damping forces (for example, it is desirable for a cabinet door to close slowly but open quickly). Conventional damping hydraulic cylinders are unidirectional, meaning they only have damping in one direction. If the cabinet door or other parts are hanging upside down, damping is also required when opening to prevent sudden opening from causing personal injury or impacting equipment. In such complex working conditions, bidirectional damping is required. However, current damping hydraulic cylinders have fixed force and direction, making it difficult to meet the requirements of such working conditions. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a bidirectional damping adjustable hydraulic rod to solve the technical problems in the background art mentioned above.

[0004] The technical solution of this utility model is as follows:

[0005] A bidirectional damping adjustable hydraulic rod includes a cylinder, a push rod, and a piston. The piston slides within the cylinder. The end of the push rod is connected to the piston, and its head extends out of the cylinder in a sealed manner. Two bypass oil passages connect the two ends of the cylinder. Each bypass oil passage is connected in series with a check valve and an adjustable manual throttle valve. The flow directions of the check valves are opposite. The piston has several damping holes but no check valves are installed on it.

[0006] Furthermore, the cylinder body is sealed at both ends by detachable plugs and caps. The bypass oil passage is opened inside the cylinder body's peripheral wall, with one end near the cylinder head directly connected to the inside of the cylinder body, and the other end connected to the U-shaped oil passage opened in the plug. The adjustable manual throttle valve and the check valve are both installed in the U-shaped oil passage inside the plug. An adjustment hole is opened on the side of the plug to the adjustment column of the adjustable manual throttle valve.

[0007] Furthermore, an internal hexagonal screw hole is made at the top of the adjusting column.

[0008] Furthermore, the adjustable manual throttle valve is located at the corner of the outer side of the U-shaped oil passage, the adjusting column is set outward, and one end protrudes a section of the sealing plug to be inserted into the bypass oil passage, and the one-way valve is installed at the inlet of the horizontal section inside the U-shaped oil passage.

[0009] Furthermore, flanges are provided at both ends of the cylinder body, and the plugs and caps are connected to the cylinder body through the flanges.

[0010] Furthermore, hinges are connected to the rear side of the plug and the top of the push rod.

[0011] The advantages of this utility model are:

[0012] This invention provides bidirectional damping, meaning that damping is generated during both withdrawal and retraction. It is applicable to working conditions where damping is required in both directions. The maximum damping is provided by the damping orifice on the piston. At maximum damping, both adjustable manual throttle valves need to be closed. If it is necessary to adjust the damping during withdrawal or retraction, the corresponding adjustable manual throttle valve can be adjusted. The damping is minimal when the adjustable manual throttle valve is fully open. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the plug.

[0016] In the diagram: 1-Cylinder block, 11-Bypass oil passage, 12-Flange, 2-Push rod, 3-Piston, 31-Damping hole, 4-Plug, 41-U-shaped oil passage, 42-Adjusting hole, 5-Adjustable manual throttle valve, 51-Adjusting column, 52-Sealing plug, 6-Check valve, 7-Cap, 8-Hinge. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0018] like Figure 1-3 As shown:

[0019] A bidirectional damping adjustable hydraulic rod includes a cylinder body 1, a push rod 2, and a piston 3. The piston 3 slides inside the cylinder body 1. The end of the push rod 2 is connected to the piston 3, and its head extends out of the cylinder body 1 in a sealed manner. There are two bypass oil passages 11 connecting the two ends of the cylinder body 1. Each bypass oil passage 11 is connected in series with a one-way valve 6 and an adjustable manual throttle valve 5. The flow directions of the one-way valves 6 are opposite. The piston 3 has several damping holes 31, but no one-way valves 6 are installed on it.

[0020] Working principle: This utility model is a bidirectional damping system, meaning that damping can be generated both when the piston is pulled out and when it is retracted. The maximum damping is provided by the damping hole 31 on the piston 3. When the maximum damping is achieved, both adjustable manual throttle valves 5 are in the closed state. If it is necessary to adjust the damping of the pull-out or retraction, the corresponding adjustable manual throttle valve 5 can be adjusted.

[0021] As an optimized design, both ends of the cylinder body 1 are sealed by detachable plugs 4 and caps 7. The bypass oil passage 11 is opened in the peripheral wall of the cylinder body 1. One end near the head of the cylinder body 1 is directly connected to the inside of the cylinder body 1, and the other end is connected to the U-shaped oil passage 41 opened in the plug 4. The adjustable manual throttle valve 5 and the one-way valve 6 are both installed in the U-shaped oil passage 41 in the plug 4. The side of the plug 4 has an adjustment 42 to the adjustment column 51 of the adjustable manual throttle valve 5.

[0022] The adjustable manual throttle valve 5 can be located at the corner outside the U-shaped oil passage 41. The adjusting column 51 is set outwards, with one end protruding a sealing plug 52 that inserts into the bypass oil passage 11. The one-way valve 6 is installed at the inlet of the horizontal section inside the U-shaped oil passage 41. This design is mainly for ease of installation and maintenance. To prevent arbitrary adjustment, an internal hexagonal screw hole can be opened at the top of the adjusting column 51, so that only professional tools can be used for adjustment, avoiding accidental contact.

[0023] As for the connection structure, flanges 12 are provided at both ends of the cylinder body 1. The plug 4 and the cover 7 are connected to the cylinder body 1 through the flanges 12. Alternatively, the plug 4 and the cover 7 can be connected by a screw, or other existing connection methods. A hinge 8 is connected to the rear side of the plug 4 and the top of the push rod 2 for easy installation and use.

[0024] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A bidirectional dampening adjustable hydraulic ram comprising a cylinder, a push rod and a piston, the piston being slidable within the cylinder, the push rod being connected at one end to the piston and at the other end to a head which is sealingly passed out of the cylinder, characterised in that: The cylinder body is sealed by detachable plugs and covers at both ends, the bypass oil channels are arranged in the peripheral wall of the cylinder body, one end of the bypass oil channels is directly connected to the inside of the cylinder body, and the other end is connected to the U-shaped oil channel arranged in the plug, the adjustable manual throttle valve and the one-way valve are arranged in the U-shaped oil channel in the plug, and an adjusting hole is arranged in the side of the plug to the adjusting column of the adjustable manual throttle valve.

2. The bidirectional, damped, adjustable hydraulic ram of claim 1, wherein: The adjusting column is provided with an inner hexagonal screw hole at the top end.

3. The bidirectional, damped, adjustable hydraulic ram of claim 2, wherein: The adjustable manual throttle valve is located at the corner outside the U-shaped oil channel, the adjusting column is arranged outward, one end of the adjusting column protrudes a sealing plug which is inserted into the bypass oil channel, and the one-way valve is arranged at the inlet of the horizontal section inside the U-shaped oil channel.

4. The bidirectional, damped, adjustable hydraulic ram of claim 2, wherein: The cylinder body is provided with flanges at both ends, and the plugs and the covers are connected with the cylinder body through the flanges.

5. The bidirectional, damped, adjustable hydraulic ram of claim 1, wherein: The rear side of the plug and the top end of the push rod are connected with the hinge heads.

6. The bidirectional, damped, adjustable hydraulic ram of claim 2, wherein: ​

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