CN210317956U

CN210317956U - Combined bidirectional safety hydraulic control lock

Info

Publication number: CN210317956U
Application number: CN201921293711.7U
Authority: CN
Inventors: 李娟�; 李发云; 谢海波
Original assignee: Shanghai Rongde Engineering Equipment Co ltd
Current assignee: Shanghai Rongde Engineering Equipment Co ltd
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-04-14
Anticipated expiration: 2029-08-12

Abstract

The utility model relates to a hydraulic pressure lock technical field discloses a modular two-way safe liquid accuse lock, including the main valve body, left valve body and right valve body are installed respectively at both ends about the main valve body, install high pressure voltage limiting release valve on left valve body and the right valve body respectively, through-hole internally mounted has the case in the middle of the main valve body, and main valve body inside still installs two one-way stop valves, and the symmetry sets up in the case both sides. The utility model discloses, rational in infrastructure, the modern design makes the oil pressure in the pipeline reach the pressure value that high pressure limiting release valve set for through the high pressure voltage limiting release valve that is equipped with when, just begins to release the pressure oil in the high-pressure line back to T hole oil duct, has avoided because environment high temperature and has leaded to the production of the hydraulic pressure remote control load condition of failure, simple structure, and is with low costs.

Description

Combined bidirectional safety hydraulic control lock

Technical Field

The utility model relates to a hydraulic pressure lock technical field specifically is a modular two-way safe liquid accuse lock.

Background

The hydraulic lock, as the name suggests, is a 'lock', namely a loop is locked, and the oil in the loop is not allowed to flow, so that the oil cylinder can still keep the position of the oil cylinder still even under the condition that the outside has certain load, and the hydraulic control one-way valve has a specific structure which is a one-way valve with a hydraulic control port. The hydraulic oil overcomes the spring force, pushes the steel ball open and directly flows through the valve seat, the steel ball, the spring, the hydraulic control port and the control plunger in the A-B direction; in the B-A direction, the steel ball falls on the valve seat, oil flow does not pass, control oil with pressure needs to be connected to the X port, the control oil acts on the control plunger to push the plunger to advance, the plunger is connected with the push rod, and the push rod pushes the steel ball open, so that hydraulic oil can flow in a reverse direction.

At present, hydraulic locks are mostly applied to hydraulic remote control systems, and in a pipeline between a control valve box and a hydraulic load, the pressure of hydraulic oil in the pipeline is increased at high temperature due to high environmental temperature, so that the hydraulic locks arranged in the control valve box are too high in pressure and cannot normally work under the system pressure, and the hydraulic remote control load is made to lose efficacy, so that the existing hydraulic locks need to be improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a modular two-way safe liquid accuse lock 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:

the combined bidirectional safety hydraulic control lock comprises a main valve body, wherein a left valve body and a right valve body are respectively installed at the left end and the right end of the main valve body, high-pressure-limiting release valves are respectively installed on the left valve body and the right valve body, a valve core is installed in a middle through hole of the main valve body, two one-way stop valves are further installed in the main valve body, and the two one-way stop valves are symmetrically arranged on two sides of the valve core.

As a further aspect of the present invention: and an O-shaped sealing groove is formed in the valve core, and an O-shaped sealing ring is installed on the O-shaped sealing groove.

As a further aspect of the present invention: and two ends of the valve core are respectively inserted into the oil inlet hole of the stop valve of the one-way stop valve.

As a further aspect of the present invention: and the oil inlet hole of the release valve of the high-pressure-limiting release valve is communicated with the oil outlet hole of the check valve through the threaded gap of the check valve.

As a further aspect of the present invention: the main valve body is of a cuboid structure, and four mounting holes are formed in the upper surface and the lower surface of the main valve body.

As a further aspect of the present invention: the middle part of the main valve body is provided with four oil holes which are respectively an A-hole oil duct, a B-hole oil duct, a P-hole oil duct and a T-hole oil duct.

As a further aspect of the present invention: the hole A oil passage and the hole B oil passage are respectively communicated with a release valve oil inlet hole of a high-pressure limiting release valve through a thread clearance of the one-way stop valve.

As a further aspect of the present invention: and the oil outlet hole of the release valve of the high-pressure limiting release valve is communicated with a T-hole oil duct through a pressure relief oil return pipeline.

As a further aspect of the present invention: and the P-hole oil duct is connected with a power source inlet.

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

the combined bidirectional safety hydraulic control lock is reasonable in structure and novel in design, when the oil pressure in the pipeline reaches the pressure value set by the high-pressure limiting release valve, the high-pressure oil in the high-pressure pipeline starts to be released back to the T-hole oil duct, the hydraulic remote control load failure condition caused by high environmental temperature is avoided, and the combined bidirectional safety hydraulic control lock is simple in structure and low in cost.

Drawings

Fig. 1 is a schematic view of an outline front view structure of a combined bidirectional safety hydraulic control lock.

Fig. 2 is a structural schematic diagram of an appearance plan view of a combined bidirectional safety hydraulic lock.

Fig. 3 is a schematic view of an internal front sectional structure of a combined bidirectional safety hydraulic lock.

Fig. 4 is a schematic view of an internal top cross-sectional structure of a combined bidirectional safety hydraulic lock.

Fig. 5 is a left side view structural diagram of a combined bidirectional safety hydraulic lock.

Fig. 6 is a schematic view of the working principle of a combined bidirectional safety hydraulic lock.

In the figure: 1-main valve body, 2-left valve body, 3-high pressure limiting release valve, 4-one-way stop valve, 5-stop valve oil inlet, 6-release valve oil inlet, 7-release valve oil outlet, 8-pressure relief oil return pipeline, 9-stop valve oil outlet, 10-A hole oil duct, 11-B hole oil duct, 12-valve core, 13-O type sealing ring, 14-mounting hole, 15-P hole oil duct, 16-T hole oil duct, 17-right valve body and 18-thread clearance.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1

Referring to fig. 1 to 6, in the embodiment of the present invention, a combined two-way safety hydraulic control lock comprises a main valve body 1, wherein the main valve body 1 is of a rectangular parallelepiped structure and is provided with four mounting holes 14 on the upper and lower surfaces thereof, the main valve body 1 is provided with four oil holes in the middle thereof, namely an a-hole oil duct 10, a B-hole oil duct 11, a P-hole oil duct 15 and a T-hole oil duct 16, the a-hole oil duct 10 and the B-hole oil duct 11 are respectively communicated with a release valve oil inlet 6 of a high-pressure limiting release valve 3 through a thread clearance 18 of a one-way stop valve 4, a release valve oil outlet 7 of the high-pressure limiting release valve 3 is communicated with the T-hole oil duct 16 through a pressure relief oil return duct 8, the P-hole oil duct 15 is connected with a power source inlet, the left and

right valve bodies

2 and 17 are respectively installed at the left and right ends of the main valve body 1, the left valve body 2 is butted with the right, the relief valve oil inlet hole 6 of the high-pressure-limiting relief valve 3 is communicated with the check valve oil outlet hole 9 of the one-way check valve 4 through a thread clearance 18 of the one-way check valve 4, a valve core 12 is arranged in a middle through hole of the main valve body 1, two ends of the valve core 12 are respectively inserted into the check valve oil inlet hole 5 of the one-way check valve 4, and two one-way check valves 4 are arranged in the main valve body 1 and symmetrically arranged on two sides of the valve core 12.

Example 2

In another embodiment of the present invention, the difference between this embodiment and the above-mentioned embodiment is that, the valve core 12 is provided with an O-shaped sealing groove, and an O-shaped sealing ring 13 is installed on the O-shaped sealing groove, so as to further ensure the sealing performance of the valve core 12 when moving on the middle through hole of the main valve body 1.

The utility model discloses a theory of operation is: when the oil pressure in the pipeline reaches the pressure value set by the high-pressure-limiting release valve 3, the high-pressure-limiting release valve 3 starts to release the pressure oil in the high-pressure pipeline back to the T-hole oil duct 16, the hydraulic remote control load failure caused by high environmental temperature is avoided, the structure is simple, the cost is low, the high-pressure-limiting release valve 3 sets adjustable release pressure, and when the pressure of the pipeline is higher than the set release pressure, the valve releases the high pressure in the area back to the T-hole oil duct 16 for oil return.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a modular two-way safe liquid accuse lock, includes the main valve body (1), install left valve body (2) and right valve body (17) respectively at the left and right both ends of the main valve body (1), its characterized in that installs high pressure voltage limiting release valve (3) on left valve body (2) and right valve body (17) respectively, through-hole internally mounted has case (12) in the middle of the main valve body (1), and main valve body (1) inside still installs two check stop valves (4), and the symmetry sets up in case (12) both sides.

2. The combined bidirectional safety hydraulic lock as recited in claim 1, wherein the valve core (12) is provided with an O-ring seal groove, and an O-ring seal (13) is mounted on the O-ring seal groove.

3. A combined two-way safety hydraulic lock according to claim 1 or 2, characterized in that both ends of the valve core (12) are respectively inserted into the stop valve oil inlet hole (5) of the one-way stop valve (4).

4. The combined bidirectional safety hydraulic lock as recited in claim 1, characterized in that the relief valve oil inlet hole (6) of the high-pressure-limiting relief valve (3) is communicated with the check valve oil outlet hole (9) of the one-way check valve (4) through the thread clearance (18) of the one-way check valve (4).

5. A combined bidirectional safety hydraulic control lock according to claim 1, wherein the main valve body (1) is a rectangular parallelepiped structure, and four mounting holes (14) are provided on the upper and lower surfaces.

6. A combined bidirectional safety hydraulic lock according to claim 5, characterized in that the main valve body (1) is provided with four oil holes in the middle, which are respectively an A-hole oil passage (10), a B-hole oil passage (11), a P-hole oil passage (15) and a T-hole oil passage (16).

7. The combined type bidirectional safety hydraulic control lock according to claim 6, wherein the A hole oil passage (10) and the B hole oil passage (11) are respectively communicated with a relief valve oil inlet hole (6) of the high-pressure limiting relief valve (3) through a thread clearance (18) of the one-way stop valve (4).

8. The combined bidirectional safety hydraulic lock according to claim 6, wherein the release valve oil outlet (7) of the high-pressure-limiting release valve (3) is communicated with a T-hole oil passage (16) through a pressure-relief oil return pipeline (8).

9. The combined bidirectional safety hydraulic lock of claim 6, wherein the P-hole oil passage (15) is connected with a power source inlet.