CN214742462U

CN214742462U - Hydraulic cylinder buffer valve with stable performance

Info

Publication number: CN214742462U
Application number: CN202120913598.9U
Authority: CN
Inventors: 秦增魁
Original assignee: Shanghai Dongji Hydrauli Engineering Co ltd
Current assignee: Shanghai Dongji Hydrauli Engineering Co ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-11-16
Anticipated expiration: 2031-04-29

Abstract

The utility model discloses a hydraulic cylinder buffer valve with stable performance, which comprises a slide block, a buffer mechanism, a liquid outlet and a sleeve, when hydraulic oil enters a first cavity, the hydraulic oil enters a liquid inlet through the first cavity, the second piston is extruded under the pushing of the pressure of the hydraulic oil, and then the second piston drives a hinge rod to move, the two hinge rods respectively drive two slide blocks to move, so that the two slide blocks move in opposite directions, the two slide blocks respectively extrude a first spring correspondingly connected with the two slide blocks, and further the pressure of the hydraulic oil is buffered through the first spring, until the second piston moves downwards, a gap is generated between the second piston and the liquid outlet, the hydraulic oil enters the liquid outlet, and then the hydraulic oil in the liquid outlet pushes a third piston to move, a fixed plate is driven to move through the third piston, the sleeve is driven to slide along the inner side of a groove through the fixed plate, and then the second spring is extended to further buffer the pressure of the hydraulic oil.

Description

Hydraulic cylinder buffer valve with stable performance

Technical Field

The utility model relates to a buffer valve specifically is a pneumatic cylinder buffer valve of stable performance.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems.

The hydraulic oil in the existing hydraulic system mostly enters the hydraulic cylinder quickly, a mechanism for buffering the oil pressure of the hydraulic oil is lacked, and the hydraulic oil can push the piston in the hydraulic cylinder to quickly collide with the cylinder cover after entering the hydraulic cylinder quickly, so that the service life of the cylinder cover is shortened, and further improvement on the hydraulic oil is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pneumatic cylinder cushion valve of stable performance to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a hydraulic cylinder buffer valve with stable performance comprises a shell, wherein a second cavity, a liquid inlet and a liquid outlet are arranged in the shell, the liquid inlet is communicated with the second cavity, the liquid outlet is communicated with the inside of the second cavity, a second piston is sleeved on the inner side of the shell in a sliding manner, a fixed block is fixedly connected to the bottom of the inner side of the shell, two buffer mechanisms are symmetrically arranged at the bottom of the second piston and are respectively positioned on two sides of the fixed block, each buffer mechanism comprises a first spring, a second sliding rod, a sliding block and a hinge rod, one end of the second sliding rod is fixedly connected with the side wall of the fixed block, the other end of the second sliding rod is fixedly connected with the inner side wall of the shell, the sliding block is sleeved on the outer side of the second sliding rod in a sliding manner, the first spring is sleeved on the outer side of the second sliding rod, one end of the first spring is fixedly connected with the side wall of the sliding block, the other end of first spring and the inside wall fixed connection of casing, the bottom and the slider top of hinge bar are articulated, the top and the second piston bottom of hinge bar are articulated, the hinge bar sets up for the slope, the first connector of casing top fixedly connected with, one side fixedly connected with second connector of casing.

As a further aspect of the present invention: the first connector corresponds the inlet setting, the inside of first connector is provided with first cavity, first cavity and first cavity intercommunication.

As a further aspect of the present invention: the inside slip cover of first connector is equipped with first piston, first piston and first cavity looks adaptation, the one end of first piston stretches into in the first cavity, two first slide bars of other end symmetry fixedly connected with of first piston, two the common fixedly connected with connecting plate behind the lateral wall of first connector is run through to the one end of first slide bar, one side of first connector is rotated and is connected with the threaded rod, the one end screw thread of threaded rod runs through fixedly connected with turning handle behind the lateral wall of connecting plate.

As a further aspect of the present invention: the second connector corresponds the liquid outlet setting, the inside and the liquid outlet intercommunication of second connector.

As a further aspect of the present invention: the inboard slip cover of liquid outlet is equipped with the third piston, the one end of third piston stretches into the inside back fixedly connected with fixed plate of second connector, two recesses, two have been seted up to a side symmetry of casing the inboard equal slip cover of recess is equipped with the sleeve pipe, the sheathed tube inboard all is provided with the second spring, the one end of second spring and the inboard fixed connection of recess, the other end of second spring and the lateral wall fixed connection of fixed plate.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the second piston is extruded under the pressure of the hydraulic oil, and then the second piston drives the hinge rods to move, the two hinge rods respectively drive the two slide blocks to move, so that the two sliding blocks move in opposite directions and respectively extrude the first springs correspondingly connected with the two sliding blocks, the pressure of the hydraulic oil is buffered by the first spring until a gap is formed between the second piston and the liquid outlet after the second piston moves downwards, the hydraulic oil enters the liquid outlet, thereby the hydraulic oil in the liquid outlet pushes the third piston to move, the third piston drives the fixed plate to move, the fixing plate drives the sleeve to slide along the inner side of the groove, so that the second spring extends, the pressure of the hydraulic oil is further buffered, and through twice buffering, the impact on the cylinder cover caused by the hydraulic oil entering the hydraulic cylinder is reduced, so that the service life of the cylinder cover of the hydraulic cylinder is prolonged.

2. Through rotating the turning handle, drive the turning handle and drive the threaded rod and rotate, through the screw-thread fit of threaded rod and connecting plate, the threaded rod rotates and drives first slide bar and remove, promotes first piston through first slide bar and removes, controls the clearance size of first cavity through first piston, adjusts the flow size of hydraulic oil.

Drawings

Fig. 1 is a structural schematic diagram of a hydraulic cylinder cushion valve with stable performance.

Fig. 2 is an enlarged view of a position a of the hydraulic cylinder cushion valve with stable performance.

Fig. 3 is a side view of a fixed plate in a hydraulic cylinder cushion valve with stable performance.

Shown in the figure: the device comprises a first connecting head 1, a first cavity 2, a first piston 3, a first slide rod 4, a threaded rod 5, a connecting plate 6, a rotating handle 7, a second connecting head 8, a first spring 9, a second slide rod 10, a slide block 11, a fixed block 12, a hinged rod 13, a buffer mechanism 14, a second cavity 15, a second piston 16, a liquid inlet 17, a shell 18, a groove 19, a second spring 20, a fixed plate 21, a third piston 22, a liquid outlet 23 and a sleeve 24.

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.

Referring to fig. 1 to 3, in the embodiment of the present invention, a hydraulic cylinder cushion valve with stable performance includes a housing 18, a second chamber 15, a liquid inlet 17 and a liquid outlet 23 are disposed in the housing 18, the liquid inlet 17 is communicated with the second chamber 15, the liquid outlet 23 is communicated with the inside of the second chamber 15, a second piston 16 is slidably sleeved on the inner side of the housing 18, a fixed block 12 is fixedly connected to the inner bottom of the housing 18, two cushion mechanisms 14 are symmetrically disposed at the bottom of the second piston 16, the two cushion mechanisms 14 are respectively symmetrically disposed at two sides of the fixed block 12, each cushion mechanism 14 includes a first spring 9, a second slide bar 10, a slider 11 and a hinge rod 13, one end of the second slide bar 10 is fixedly connected to a side wall of the fixed block 12, and the other end of the second slide bar 10 is fixedly connected to an inner side wall of the housing 18, the sliding block 11 is slidably sleeved on the outer side of the second sliding rod 10, the first spring 9 is sleeved on the outer side of the second sliding rod 10, one end of the first spring 9 is fixedly connected with the side wall of the sliding block 11, the other end of the first spring 9 is fixedly connected with the inner side wall of the shell 18, the bottom end of the hinge rod 13 is hinged with the top of the sliding block 11, the top end of the hinge rod 13 is hinged with the bottom end of the second piston 16, the hinge rod 13 is obliquely arranged, the top of the shell 18 is fixedly connected with the first connector 1, the first connector 1 is arranged corresponding to the liquid inlet 17, the first cavity 2 is arranged inside the first connector 1, the first cavity 2 is communicated with the first cavity 2, the first piston 3 is slidably sleeved inside the first connector 1, the first piston 3 is matched with the first cavity 2, one end of the first piston 3 extends into the first cavity 2, the other end of the first piston 3 is symmetrically and fixedly connected with two first slide bars 4, one end of each of the two first slide bars 4 penetrates through the side wall of the first connector 1 and then is fixedly connected with a connecting plate 6, one side of the first connector 1 is rotatably connected with a threaded rod 5, one end of the threaded rod 5 penetrates through the side wall of the connecting plate 6 and then is fixedly connected with a rotating handle 7, one side of the shell 18 is fixedly connected with a second connector 8, the second connector 8 is arranged corresponding to the liquid outlet 23, the inside of the second connector 8 is communicated with the liquid outlet 23, the inner side of the liquid outlet 23 is slidably sleeved with a third piston 22, one end of the third piston 22 extends into the inside of the second connector 8 and then is fixedly connected with a fixed plate 21, one side of the shell 18 is symmetrically provided with two grooves 19, and the inner sides of the two grooves 19 are slidably sleeved with a sleeve 24, the inner sides of the sleeves 24 are provided with second springs 20, one ends of the second springs 20 are fixedly connected with the inner sides of the grooves 19, and the other ends of the second springs 20 are fixedly connected with the side walls of the fixing plates 21.

The utility model discloses a theory of operation is:

when the hydraulic oil pump is used, one end of the first connector 1 is communicated with an external oil pipe, one end of the second connector 8 is communicated with a liquid inlet of an external hydraulic cylinder, after hydraulic oil enters the first cavity 2, the hydraulic oil enters the liquid inlet 17 through the first cavity 2, the second piston 16 is extruded under the pushing of the pressure of the hydraulic oil, the second piston 16 drives the hinge rod 13 to move, the two hinge rods 13 respectively drive the two sliders 11 to move, the two sliders 11 move in opposite directions, the two sliders 11 respectively extrude the first springs 9 correspondingly connected with the sliders, the pressure of the hydraulic oil is buffered through the first springs 9 until after the second piston 16 moves downwards, a gap is formed between the second piston 16 and the liquid outlet 23, the hydraulic oil enters the liquid outlet 23, the hydraulic oil in the liquid outlet 23 pushes the third piston 22 to move, the fixing plate 21 is driven to move through the third piston 22, drive sleeve pipe 24 through fixed plate 21 and slide along recess 19's inboard, and then make the extension of second spring 20, further cushion the pressure of hydraulic oil, prevent that hydraulic oil from entering into for the cylinder cap with very big impact force in the pneumatic cylinder fast, lead to the life of cylinder cap to reduce, the stable performance, through rotating turning handle 7, it drives threaded rod 5 and rotates to drive turning handle 7, screw-thread fit through threaded rod 5 and connecting plate 6, threaded rod 5 rotates and drives first slide bar 4 and remove, promote first piston 3 through first slide bar 4 and remove, the clearance size of first cavity 2 is controlled through first piston 3, adjust the flow size of hydraulic oil.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a hydraulic cylinder cushion valve of stable performance, includes casing (18), its characterized in that: a second cavity (15), a liquid inlet (17) and a liquid outlet (23) are arranged in the shell (18), the liquid inlet (17) is communicated with the second cavity (15), the liquid outlet (23) is communicated with the inside of the second cavity (15), a second piston (16) is sleeved on the inner side of the shell (18) in a sliding mode, a fixed block (12) is fixedly connected to the bottom of the inner side of the shell (18), two buffer mechanisms (14) are symmetrically arranged at the bottom of the second piston (16), the two buffer mechanisms (14) are respectively located on two sides of the fixed block (12) and symmetrically arranged, each buffer mechanism (14) comprises a first spring (9), a second sliding rod (10), a sliding block (11) and a hinge rod (13), one end of the second sliding rod (10) is fixedly connected with the side wall of the fixed block (12), the other end of the second sliding rod (10) is fixedly connected with the inner side wall of the shell (18), the outside of second slide bar (10) is located to slider (11) slip cap, the outside of second slide bar (10) is located to first spring (9) cover, the one end of first spring (9) and the lateral wall fixed connection of slider (11), the other end of first spring (9) and the inside wall fixed connection of casing (18), the bottom and the slider (11) top of hinge bar (13) are articulated, the top and the second piston (16) bottom of hinge bar (13) are articulated, hinge bar (13) set up for the slope, casing (18) top fixedly connected with first connector (1), one side fixedly connected with second connector (8) of casing (18).

2. The stable performance hydraulic cylinder cushion valve of claim 1, wherein: the liquid inlet is characterized in that the first connecting head (1) is arranged corresponding to the liquid inlet (17), a first cavity (2) is arranged inside the first connecting head (1), and the first cavity (2) is communicated with the first cavity (2).

3. The stable performance hydraulic cylinder cushion valve of claim 1, wherein: the inside slip cover of first connector (1) is equipped with first piston (3), first piston (3) and first cavity (2) looks adaptation, the one end of first piston (3) stretches into in first cavity (2), two first slide bars (4) of other end symmetry fixedly connected with of first piston (3), two the one end of first slide bar (4) runs through common fixedly connected with connecting plate (6) behind the lateral wall of first connector (1), one side of first connector (1) is rotated and is connected with threaded rod (5), the one end screw thread of threaded rod (5) runs through fixedly connected with turning handle (7) behind the lateral wall of connecting plate (6).

4. The stable performance hydraulic cylinder cushion valve of claim 1, wherein: the second connector (8) is arranged corresponding to the liquid outlet (23), and the inside of the second connector (8) is communicated with the liquid outlet (23).

5. The stable performance hydraulic cylinder cushion valve of claim 1, wherein: the inboard slip cover of liquid outlet (23) is equipped with third piston (22), the one end of third piston (22) stretches into fixedly connected with fixed plate (21) after the inside to second connector (8), two recess (19), two have been seted up to the one side symmetry of casing (18) the inboard of recess (19) is all slided the cover and is equipped with sleeve pipe (24), the inboard of sleeve pipe (24) all is provided with second spring (20), the inboard fixed connection of the one end of second spring (20) and recess (19), the other end of second spring (20) and the lateral wall fixed connection of fixed plate (21).