Stable hydraulic buffer

Abstract

The utility model discloses a stable type hydraulic buffer which comprises a buffer body, a cavity a and a cavity b are respectively arranged in the buffer body, the cavity a is communicated with the cavity b, the rear end of the buffer body is fixedly connected with a fixing block, an oil port is arranged in the fixing block, the oil port is communicated with the cavity b, and the cavity a is communicated with the cavity b. A piston rod is slidably connected into the cavity a, one end of the piston rod moves outside the buffer body, the other end of the piston rod is fixedly connected with a pushing block, and the pushing block moves in the cavity b. The speed control device can be applied to various devices or systems needing speed control, and is stable in damping performance, long in service life, simple in structure, easy to install, wide in applicability and good in economical efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of buffers, in particular to a stable hydraulic buffer. Background Art

[0002] Hydraulic shock absorbers rely on hydraulic damping to buffer and decelerate the objects acting on them until they stop, playing a certain degree of protective role. They are suitable for mechanical equipment such as lifting and transportation, elevators, metallurgy, port machinery, and railway vehicles. Their function is to prevent hard collisions from causing damage to the mechanism during operation.

[0003] When the existing hydraulic buffer is working, the oil still fills the entire sealing chamber after the piston rod is extended by the spring or the atmosphere driving the floating piston. However, the spring or the atmosphere driving the floating piston cannot be synchronized with the piston rod, resulting in a delayed response of the hydraulic buffer. The corresponding piston rod first extends quickly for a certain distance, then pauses or rebounds for a moment, and finally extends smoothly. This has a great impact on the life of the buffer and is not suitable for precision equipment. Summary of the invention

[0004] The purpose of the utility model is to provide a stable hydraulic buffer to solve the problem that the existing hydraulic buffer mentioned in the background technology mentioned above, when working, the oil still fills the entire sealing chamber after the piston rod is extended by the spring or the atmosphere driving the floating piston. However, the spring or the atmosphere driving the floating piston cannot be synchronized with the piston rod, resulting in a delayed response of the hydraulic buffer. The corresponding piston rod first extends quickly for a period of time, then pauses or rebounds instantly, and finally extends smoothly. This has a great impact on the life of the buffer and is not suitable for precision equipment.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stable hydraulic buffer, including a buffer body, wherein chamber a and chamber b are respectively provided in the buffer body, and chamber a is communicated with chamber b, a fixed block is fixedly connected to the rear end of the buffer body, and an oil port is provided in the fixed block, and the oil port is communicated with chamber b, a piston rod is slidably connected in chamber a, and one end of the piston rod is movable outside the buffer body, and a push block is fixedly connected to the other end of the piston rod, and the push block is movable in chamber b.

[0006] Preferably, a throttle valve is fixedly installed along the inner wall at the connection between chamber a and chamber b, and the outer wall of the throttle valve is slidably connected to the outer wall of the piston rod.

[0007] Preferably, one end of the piston rod away from the buffer body is threadedly connected with a connector.

[0008] Preferably, a plurality of sets of sealing rings are fixedly installed on the inner wall of the chamber a, and the outer wall of the sealing ring is in contact with the surface of the piston rod.

[0009] Preferably, an oil inlet auxiliary component is provided at the inlet of the oil port.

[0010] Beneficial Effects

[0011] Compared with the existing technology, the beneficial effects of the utility model are:

[0012] The utility model can be applied to various devices or systems requiring speed control, has stable damping performance, long service life, simple structure, simple installation, extremely wide applicability and good economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the internal structure of the utility model.

[0014] 1. Buffer body; 2. Fixed block; 3. Connector; 4. Chamber a; 5. Chamber b; 6. Oil port;

[0015] 7. Piston rod; 8. Throttle valve; 9. Sealing ring; 10. Push block; 61. Oil inlet auxiliary parts. DETAILED DESCRIPTION

[0016] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "front", "back", "inside", "outside", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore are not to be construed as limiting the present invention. In addition, the terms "first", "second" and "third" are only used for descriptive purposes and are not to be construed as indicating or implying relative importance.

[0018] like Figure 1It is a schematic diagram of the structure of a stable hydraulic buffer of a preferred embodiment of the utility model. In this embodiment, a stable hydraulic buffer includes a buffer body 1, wherein chamber a 4 and chamber b 5 are respectively provided in the buffer body 1, and chamber a 4 and chamber b 5 are communicated with each other. A fixed block 2 is fixedly connected to the rear end of the buffer body 1, and an oil port 6 is provided in the fixed block 2, which is communicated with chamber b 5 through the oil port 6. During the operation of the buffer body 1, the oil inlet and oil return method of the oil port 6 is used to control the piston connected to the sliding in chamber a 4. Rod 7, and one end of the piston rod 7 moves outside the buffer body 1, and the other end of the piston rod 7 is fixedly connected with a pushing block 10, and the pushing block 10 moves in the b chamber 5. The pushing block 10 is arranged to increase the contact area between the piston rod 7 and the oil, so as to achieve the purpose of stably pushing the piston rod 7, and the sliding speed of the piston rod 7 depends on the speed of the oil inlet and the speed of the oil return of the oil port 6; based on the above structural design, the utility model can be applied to various devices or systems that require speed control, with stable damping performance, long service life, simple structure, simple installation, extremely wide applicability and good economy.

[0019] In this embodiment, a throttle valve 8 is fixedly installed along the inner wall at the connection between the a chamber 4 and the b chamber 5, and the outer wall of the throttle valve 8 is slidingly connected to the outer wall of the piston rod 7. Its structural design reduces the oil in the b chamber 5 from entering the a chamber 4.

[0020] In this embodiment, the end of the piston rod 7 away from the buffer body 1 is threadedly connected with a connector 3, and the design purpose is to replace the required connector 3 according to actual needs so as to achieve the purpose of assembling a more suitable connector 3.

[0021] In this embodiment, a plurality of sealing rings 9 are fixedly installed on the inner wall of the a chamber 4, and the outer wall of the sealing ring 9 is in contact with the surface of the piston rod 7. The structural design increases the sealing performance of the hydraulic buffer and prevents the piston rod 7 from bringing the oil in the a chamber 4 and the b chamber 5 to the outside during the reciprocating operation of extending and retracting, thereby causing oil leakage.

[0022] In this embodiment, an oil inlet auxiliary part 61 is provided at the entrance of the oil port 6. This structural design facilitates the oil port 6 to be connected to the oil pipe, so that the b chamber 5 can be directly connected to the oil tank.

[0023] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A stable hydraulic buffer, comprising a buffer body (1), characterized in that: The buffer body (1) is provided with chamber a (4) and chamber b (5) respectively, and the chamber a (4) is communicated with the chamber b (5). The rear end of the buffer body (1) is fixedly connected with a fixing block (2), and the fixing block (2) is provided with an oil port (6), and the oil port (6) is communicated with the chamber b (5). The chamber a (4) is slidably connected with a piston rod (7), and one end of the piston rod (7) is movable outside the buffer body (1), and the other end of the piston rod (7) is fixedly connected with a push block (10), and the push block (10) is movable in the chamber b (5).

2. A stable hydraulic buffer according to claim 1, characterized in that: A throttle valve (8) is fixedly installed along the inner wall of the connection between the a chamber (4) and the b chamber (5), and the outer wall of the throttle valve (8) is slidably connected to the outer wall of the piston rod (7).

3. A stable hydraulic buffer according to claim 2, characterized in that: The end of the piston rod (7) away from the buffer body (1) is threadedly connected to a connector (3).

4. A stable hydraulic buffer according to claim 1, characterized in that: A plurality of sets of sealing rings (9) are fixedly mounted on the inner wall of the chamber a (4), and the outer wall of the sealing ring (9) is in contact with the surface of the piston rod (7).

5. A stable hydraulic buffer according to claim 1, characterized in that: An oil inlet auxiliary component (61) is provided at the inlet of the oil port (6).

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