CN217926517U

CN217926517U - Anti-cracking balance self-locking safety oil cylinder valve block

Info

Publication number: CN217926517U
Application number: CN202221385423.6U
Authority: CN
Inventors: 吴礼顺
Original assignee: Huangshi Zhongtian Machinery Manufacturing Co ltd
Current assignee: Huangshi Zhongtian Machinery Manufacturing Co ltd
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2022-11-29
Anticipated expiration: 2032-06-06

Abstract

The utility model discloses a balanced auto-lock safety cylinder valve block prevents breaking, including valve block body, oil inlet, main oil-out, secondary oil-out, oil return opening, two glands, the main oil duct has been seted up to valve block body inside, and valve block body inside is provided with supplementary self-locking mechanism and seal assembly, and supplementary self-locking mechanism includes two bypass oil ducts and two first spacing grooves, and the bypass oil duct is located the top of main oil duct, and first spacing groove is located the below of main oil duct, and the bottom fixedly connected with first dead lever of first spacing inslot wall; the utility model relates to a hydro-cylinder valve piece technical field, this prevent balanced auto-lock safety hydro-cylinder valve piece that breaks increases an supplementary auto-lock protection mechanism again under the auto-lock protection mechanism of itself through the constitution of reset spring and case, thereby it makes time valve body downstream to make the limiting plate carry on spacingly to the case to load the oil pressure increase of time oil-out and return oil mouth department when too big to increase the pressure that the case can bear.

Description

Anti-cracking balance self-locking safety oil cylinder valve block

Technical Field

The utility model relates to a hydro-cylinder valve block technical field specifically is a balanced auto-lock safety hydro-cylinder valve block prevents breaking.

Background

In the existing oil cylinder system, the lifting of the control oil cylinder is generally controlled by a reversing valve, and if the control of the oil return speed is to be realized, a speed regulating valve is integrated in the reversing valve, or a one-way speed regulating valve is directly connected in series in an oil return oil circuit.

The hydro-cylinder valve piece is used to the hydro-cylinder when using, the hydro-cylinder valve piece plays the effect of control oil circuit, play the guard action to the safety of hydro-cylinder in addition, current hydro-cylinder valve piece inside can be provided with the auto-lock protection machanism and be used for preventing that the too big hydraulic oil backward flow that leads to of hydro-cylinder load from causing the rupture damage of valve piece and hydro-cylinder, but current auto-lock protection machanism protection not good enough, still can destroy valve piece and hydro-cylinder when the load is too big, the sealed condition that causes the oil leak of valve piece not good enough takes place in addition.

Disclosure of Invention

The utility model provides a not enough to prior art, the utility model provides a balanced auto-lock safety cylinder valve piece prevents breaking has solved the problem that the protective performance of the inside auto-lock protection mechanism of hydro-cylinder valve piece is not good enough with the sealed not good enough of valve piece.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a rupture-preventing balanced self-locking safety oil cylinder valve block comprises a valve block body, an oil inlet, a main oil outlet, a secondary oil outlet, an oil return port and two pressing covers, wherein a main oil duct is formed in the valve block body, an auxiliary self-locking mechanism and a sealing assembly are arranged in the valve block body, the auxiliary self-locking mechanism comprises two bypass oil ducts and two first limiting grooves, the bypass oil ducts are located above the main oil ducts, the first limiting grooves are located below the main oil ducts, the bottoms of the inner walls of the first limiting grooves are fixedly connected with first fixing rods, limiting plates are connected to the surfaces of the first fixing rods in a sliding mode, first limiting holes and second limiting holes are formed in the left sides of the limiting plates, the second limiting holes are located above the first limiting holes, first limiting springs are sleeved on the surfaces, located outside the limiting plates, of the first fixing rods penetrate through the main oil ducts and extend into the bypass oil ducts, and secondary valve bodies are connected to the inner surfaces of the bypass oil ducts in a sliding mode;

the sealing assembly comprises an annular groove formed in the valve block body, a second fixing rod is fixedly connected to the left side of the inner wall of the annular groove, a loop bar is connected to the surface of the second fixing rod in a sliding mode, the loop bar penetrates through the valve block body and extends to the inner end of the oil inlet to be fixedly connected with a sealing ring, and a second limiting spring is sleeved on the surface, located outside the loop bar, of the second fixing rod.

Preferably, the oil inlet and the main oil outlet are located at the bottom of the valve block body, the secondary oil outlet and the oil return port are located at the top of the valve block body, and the oil inlet, the main oil outlet, the secondary oil outlet and the oil return port penetrate through the valve block body and are communicated with the main oil duct.

Preferably, the two bypass oil passages are respectively communicated with the secondary oil outlet and the oil return port.

Preferably, two the gland is respectively through hexagon socket head cap fixing bolt and the left and right sides fixed connection of valve block body, two the equal fixedly connected with reset spring in the relative one side of gland.

Preferably, the other end of the return spring is fixedly connected with a valve core, the return spring and the valve core are both located inside the main oil duct, and a main valve body is arranged in the middle of the main oil duct.

Preferably, the diameter of the second limiting hole is smaller than that of the first limiting hole, and the diameter of the first limiting hole is slightly larger than that of the valve core.

The utility model provides a balanced auto-lock safety cylinder valve block prevents breaking. Compared with the prior art, the method has the following beneficial effects:

(1) This prevent balanced auto-lock safety cylinder valve piece that breaks, include two bypass oil ducts and two first spacing grooves through stating supplementary self-locking mechanism, the bypass oil duct is located the top of main oil duct, first spacing groove is located the below of main oil duct, the first dead lever of bottom fixedly connected with of first spacing inslot wall, first dead lever surface sliding connection has the limiting plate, increase supplementary auto-lock protection mechanism again under the auto-lock protection mechanism of itself through the constitution of reset spring with the case, thereby the oil pressure increase of time oil-out and oil return mouth department makes time valve body downstream carry on spacingly to the case, thereby increase the pressure that the case can bear, the auto-lock protective capability of valve piece has been promoted.

(2) This prevent balanced auto-lock safety cylinder valve block that breaks, including seting up at the inside ring groove of valve block body through seal assembly, the left side fixedly connected with second dead lever of ring inslot wall, the sliding surface of second dead lever is connected with the loop bar, the loop bar runs through valve block body and extends to the inside one end fixedly connected with sealing washer of oil inlet, after the connector precession of business turn over hydraulic fluid port, thereby the sealing washer is compressed the spacing spring of second by extrusion deformation, make the sealing washer inseparabler with the joint contact under the effect of the spacing spring of second, thereby increase sealed effect.

Drawings

FIG. 1 is a schematic view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is a partial schematic view of the limiting plate of the present invention;

fig. 4 is an enlarged view of the point a of the present invention.

In the figure: 1 valve block body, 2 oil inlets, 3 main oil outlets, 4 times oil outlets, 5 oil return ports, 6 glands, 7 main oil ducts, 8 auxiliary self-locking mechanisms, 81 bypass oil ducts, 82 first limiting grooves, 83 first fixing rods, 84 limiting plates, 841 first limiting holes, 842 second limiting holes, 85 first limiting springs, 86 times valve bodies, 9 sealing assemblies, 91 circular grooves, 92 second fixing rods, 93 loop bars, 94 sealing rings, 95 second limiting springs, 10 reset springs, 11 valve cores and 12 main valve bodies.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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. 1-4, the present invention provides a technical solution: a rupture-preventing balanced self-locking safety oil cylinder valve block comprises a valve block body 1, an oil inlet 2, a main oil outlet 3, a secondary oil outlet 4, an oil return port 5 and two pressing covers 6, wherein a main oil duct 7 is formed in the valve block body 1, an auxiliary self-locking mechanism 8 and a sealing assembly 9 are arranged in the valve block body 1, the auxiliary self-locking mechanism 8 comprises two bypass oil ducts 81 and two first limiting grooves 82, the bypass oil ducts 81 are located above the main oil duct 7, the first limiting grooves 82 are located below the main oil duct 7, the bottoms of the inner walls of the first limiting grooves 82 are fixedly connected with first fixing rods 83, the surfaces of the first fixing rods 83 are slidably connected with limiting plates 84, the left sides of the limiting plates 84 are provided with first limiting holes 841 and second limiting holes 842, the second limiting holes 842 are located above the first limiting holes 841, first limiting springs 85 are sleeved on the surfaces of the first fixing rods 83 outside the limiting plates 84, the limiting plates 84 penetrate through the main oil duct 7 and extend into the main oil duct 81, secondary valve bodies 86 are slidably connected to the inner surfaces of the two bypass oil ducts 81, the two bypass oil outlet 4 are respectively communicated with the secondary oil return port 5, and the first limiting springs 85 when the oil pressure is not large oil pressure;

the sealing assembly 9 comprises an annular groove 91 formed in the valve block body 1, a second fixing rod 92 fixedly connected to the left side of the inner wall of the annular groove 91, a sleeve rod 93 is connected to the surface of the second fixing rod 92 in a sliding mode, the sleeve rod 93 penetrates through the valve block body 1 and extends to the inner end of the oil inlet 2 to be fixedly connected with a sealing ring 94, and the second fixing rod 92 is located on the outer surface of the sleeve rod 93 and is provided with a second limiting spring 95 in a sleeved mode.

Oil inlet 2, main oil-out 3 are located the bottom of valve block body 1, and inferior oil-out 4, oil return opening 5 are located the top of valve block body 1, and oil inlet 2, main oil-out 3, inferior oil-out 4, oil return opening 5 all run through to the inside of valve block body 1, and communicate with main oil gallery 7.

Two glands 6 are respectively through hexagon socket head cap fixing bolt and the left and right sides fixed connection of valve block body 1, the equal fixedly connected with reset spring 10 in the relative one side of two glands 6, and reset spring 10's other end fixedly connected with case 11, reset spring 10 all are located the inside of main oil duct 7 with case 11, and the intermediate position of main oil duct 7 is provided with main valve body 12.

The diameter of the second limiting hole 842 is smaller than that of the first limiting hole 841, and the diameter of the first limiting hole 841 is slightly larger than that of the valve core 11.

When the oil-way joint is used, the respective oil-way joint is respectively in threaded connection with the oil inlet 2, the main oil outlet 3, the secondary oil outlet 4 and the oil return port 5, when the oil-way joint is connected with the oil inlet 2, the joint is screwed into the oil inlet 2, so that the sealing ring 94 is extruded, the loop rod 93 moves towards the inside of the circular groove 91, the second limiting spring 95 is compressed to generate elastic force to react with the loop rod 93, the sealing ring 94 is tightly pressed on the surface of the oil-way joint, the sealing effect is improved, when the load is overlarge, the oil pressure of the secondary oil outlet 4 and the oil return port 5 is increased, the hydraulic oil enters the bypass oil channel 81, the oil pressure is overlarge at the moment and is enough for the first limiting spring 85 to deform, the secondary valve body 86 moves and pushes the limiting plate 84 to move downwards, the second limiting hole 842 is aligned with the valve core 11, the diameter of the second limiting hole 842 is smaller than that of the valve core 11, so that the valve core 11 cannot move, supporting force is provided for the valve core 11, and damage to the valve core 11 when the load is overlarge is prevented.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a balanced auto-lock safety cylinder valve block prevents breaking, includes valve block body (1), oil inlet (2), main oil-out (3), inferior oil-out (4), oil return opening (5), two glands (6), main oil duct (7), its characterized in that have been seted up to valve block body (1) inside: an auxiliary self-locking mechanism (8) and a sealing assembly (9) are arranged inside the valve block body (1), the auxiliary self-locking mechanism (8) comprises two bypass oil ducts (81) and two first limiting grooves (82), the bypass oil ducts (81) are located above the main oil ducts (7), the first limiting grooves (82) are located below the main oil ducts (7), the bottom of the inner wall of each first limiting groove (82) is fixedly connected with a first fixing rod (83), the surface of each first fixing rod (83) is connected with a limiting plate (84) in a sliding mode, the left side of each limiting plate (84) is provided with a first limiting hole (841) and a second limiting hole (842), the second limiting hole (842) is located above the corresponding first limiting hole (841), a first limiting spring (85) is sleeved on the surface, located outside the corresponding limiting plate (84), the corresponding limiting plate (84) penetrates through the main oil ducts (7) and extends into the bypass oil ducts (81), and the inner surface of each bypass oil duct (81) is connected with a secondary valve body (86) in a sliding mode; sealing component (9) is including seting up at inside ring groove (91) of valve block body (1), the left side fixedly connected with second dead lever (92) of ring groove (91) inner wall, the surperficial sliding connection of second dead lever (92) has loop bar (93), loop bar (93) run through valve block body (1) and extend to oil inlet (2) inside one end fixedly connected with sealing washer (94), the surperficial cover that second dead lever (92) are located loop bar (93) outside is equipped with the spacing spring of second (95).

2. The anti-rupture, balanced and self-locking safety cylinder valve block according to claim 1, characterized in that: the oil inlet (2) and the main oil outlet (3) are located at the bottom of the valve block body (1), the secondary oil outlet (4) and the oil return port (5) are located at the top of the valve block body (1), and the oil inlet (2), the main oil outlet (3), the secondary oil outlet (4) and the oil return port (5) all penetrate through the valve block body (1) and are communicated with the main oil duct (7).

3. The anti-rupture, balanced and self-locking safety cylinder valve block according to claim 1, characterized in that: the two bypass oil ducts (81) are respectively communicated with the secondary oil outlet (4) and the oil return port (5).

4. The anti-rupture, balanced and self-locking safety cylinder valve block according to claim 1, characterized in that: two gland (6) are respectively through the left and right sides fixed connection of hexagon socket head cap fixing bolt with valve block body (1), two equal fixedly connected with reset spring (10) in one side that gland (6) are relative.

5. The anti-rupture balancing self-locking safety cylinder valve block according to claim 4, characterized in that: the other end of the return spring (10) is fixedly connected with a valve core (11), the return spring (10) and the valve core (11) are both located inside the main oil duct (7), and a main valve body (12) is arranged in the middle of the main oil duct (7).

6. The anti-rupture balancing self-locking safety cylinder valve block according to claim 5, characterized in that: the diameter of the second limiting hole (842) is smaller than that of the first limiting hole (841), and the diameter of the first limiting hole (841) is slightly larger than that of the valve core (11).