CN218266556U

CN218266556U - Hydraulic control one-way valve with direct-acting overflow device

Info

Publication number: CN218266556U
Application number: CN202221878071.8U
Authority: CN
Inventors: 江放; 张金鸽
Original assignee: Tianjin Huazheng Creativity Technology Co ltd
Current assignee: Tianjin Huazheng Creativity Technology Co ltd
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2023-01-10
Anticipated expiration: 2032-07-12

Abstract

The utility model provides a hydraulic control one-way valve with a direct-acting overflow device, which comprises an oil pump oil storage pool, a hydraulic cylinder body and a hydraulic lock, wherein a first passage and a second passage are arranged in the hydraulic lock, and a lock body structure is arranged between the first passage and the second passage; a rodless cavity of the hydraulic cylinder body is connected with the oil pump oil storage pool through a first passage, and a rod cavity of the hydraulic cylinder body is connected with the oil pump oil storage pool through a second passage; the overflow device further comprises an overflow loop, and the overflow loop is connected with the first passage in parallel. A hydraulic control check valve of area translation overflow arrangement, through setting up the overflow return circuit, the first return pipe and the first passageway in overflow return circuit are parallelly connected, when meetting the locking state that can't remove the hydraulic pressure lock in the short time, flow back to the oil pump oil storage tank through the hydraulic oil in the rodless chamber of overflow return circuit with the pneumatic cylinder body, and then will be lifted the thing and fall to the ground.

Description

Hydraulic control one-way valve with direct-acting overflow device

Technical Field

The utility model belongs to the equipment field that rises, especially, relate to a hydraulic control check valve of area direct action overflow arrangement.

Background

The existing hydraulic cylinder for starting and reusing is generally provided with a safety lock (namely a hydraulic lock), and when the oil supply is interrupted (due to manual operation suspension or failure of an oil pump and the like), the safety lock is immediately triggered to lock the lower cavity to store oil (a rodless cavity at the lower part of a hydraulic cylinder body), so that a piston is ensured to stop at the current position, and a vehicle body is prevented from falling; after the oil supply is recovered, the safety lock servo mechanism senses that oil (control oil) liquid can be automatically opened when passing, and the piston operates as usual.

After the safety lock is triggered, the locking state of the safety lock can be automatically released only by recovering oil supply of an oil way, if the oil supply can not be recovered in a short time due to mechanical failure of a hydraulic source, the piston is propped by the oil stored in the cylinder and can not fall down, the vehicle body is always in a suspended state, and potential safety hazards are easy to occur.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a hydraulic control check valve of area direct-acting overflow arrangement has solved one kind and has sent the condition that the short time can not resume the fuel feeding under hydraulic source mechanical failure, and the piston is withstood the unable circumstances that falls by the jar internal storage volume oil.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

a hydraulic control one-way valve with a direct-acting overflow device comprises an oil pump oil storage pool, a hydraulic cylinder body and a hydraulic lock, wherein a first passage and a second passage are arranged in the hydraulic lock, and a lock body structure is arranged between the first passage and the second passage;

a rodless cavity of the hydraulic cylinder body is connected with the oil pump oil storage pool through a first passage, and a rod cavity of the hydraulic cylinder body is connected with the oil pump oil storage pool through a second passage;

the overflow device further comprises an overflow loop, and the overflow loop is connected with the first passage in parallel.

Further, the first end of the first passage is a first oil pool connecting end, the second end of the first passage is a first cylinder body connecting end, the first end of the second passage is a second oil pool connecting end, and the second end of the second passage is a second cylinder body connecting end;

the connecting end of the first oil pool and the connecting end of the second oil pool are respectively communicated with an oil storage pool of the oil pump;

the first cylinder body connecting end is communicated with a rodless cavity of the hydraulic cylinder body, and the second cylinder body connecting end is communicated with a rod cavity of the hydraulic cylinder body.

Furthermore, the overflow loop comprises a first return pipe, a first joint and a second joint are respectively arranged at two ends of the first return pipe, the first joint is connected on a pipeline between the rodless cavity and the connecting end of the first cylinder body, and the second joint is connected on a pipeline between the connecting end of the first oil pool and the oil storage pool of the oil pump;

the first backflow pipe is arranged on the pipeline of the first backflow pipe, and the opening and closing structure is used for controlling the opening and closing of the first backflow pipe.

Further, still include the shell, the overflow return circuit sets up in the shell, and the switching structure includes the cock, and the cock outer wall is provided with the external screw thread structure, and the shell is provided with the accommodation hole that is used for holding the cock, and the accommodation hole inner wall is provided with the internal thread structure who corresponds with the external screw thread structure.

Furthermore, the end part of the outer side of the cock is provided with a straight clamping groove.

Furthermore, the end face of the cock, which is far away from one end of the first return pipe pipeline, is positioned in the accommodating hole of the shell.

Furthermore, a sealing gasket is arranged at the opening connecting part of the first backflow pipe.

Compared with the prior art, a hydraulic control check valve with direct-acting overflow device has the following advantages:

(1) The hydraulic control one-way valve with the direct-acting overflow device, provided by the overflow loop, has the advantages that the first return pipe of the overflow loop is connected with the first passage in parallel, when the locking state of the hydraulic lock cannot be released in a short time, hydraulic oil in the rodless cavity of the hydraulic cylinder body flows back to the oil pump oil storage tank through the overflow loop, and then lifted objects fall to the ground;

(2) One end of a cock in the hydraulic control one-way valve with the direct-acting overflow device is processed into a cock opening, so that the cock opening can be opened by a key, a knife or an iron sheet in an emergency when no ready-made tool is available on an operation site;

(3) The cock terminal surface in a kind of pilot operated check valve with direct-acting overflow arrangement described does not exceed the accommodation hole boundary scope, can prevent the mistake from bumping the operation.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic view of a working flow of a hydraulic control check valve with a direct-acting overflow device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a part of the first return pipe (overflow circuit) according to the embodiment of the present invention.

Description of reference numerals:

1-an oil pump oil storage pool; 2-a hydraulic cylinder body; 21-a rodless cavity; 22-a rod cavity; 3-hydraulic locking; 31 — a first pathway; 32-a second path; 33-a lock body structure; 4-a first return pipe; 41-an opening and closing structure; 42-a first joint; 43-a second linker; 44-sealing gasket.

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," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. 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 should 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.

As shown in fig. 1 and fig. 2, in the present solution, for the situation that the oil supply cannot be recovered in a short time due to a mechanical failure of the hydraulic source, and the piston cannot fall down due to being pushed by the oil stored in the cylinder, an overflow circuit is additionally installed on the hydraulic control check valve (i.e. a hydraulic valve and a safety valve), and the hydraulic control check valve is triggered due to the situation that the piston cannot fall down due to being pushed by the oil stored in the cylinder, and the hydraulic control check valve is in a locked state, so that the first passage 31 mentioned in the present solution is closed, and further, the hydraulic oil cannot flow back;

the overflow loop is connected with the first channel in parallel, when the hydraulic cylinder is in a normal use state, hydraulic oil flows through the first channel in the hydraulic lock 3, the overflow loop does not participate in work, and only when the emergency occurs, oil cannot be supplied in a short time and the hydraulic cylinder needs to be retracted to enable a supported object to fall to the ground, the overflow loop is started, oil in the rodless cavity 21 in the hydraulic cylinder body 2 flows back to the oil pump oil storage pool 1, and then the hydraulic cylinder body 2 is retracted;

the specific configuration method of the overflow loop is as follows, the overflow loop includes the first return pipe 4, one end of the first return pipe 4 is connected to the pipeline between the rodless cavity 21 and the first cylinder body connecting end, the other end is connected to the pipeline between the first oil pool connecting end and the oil pump oil storage pool 1, two connecting parts are provided with sealing structures, the sealing can be performed by adopting O-shaped ring oil seal or rubber pad oil seal, the pipeline of the first return pipe 4 is provided with an opening and closing structure 41 for controlling the opening and closing of the pipeline, the opening and closing structure 41 can adopt the existing common valve body structure for controlling the opening and closing of the pipeline, in order to simplify the structure in the scheme, the structure of the cock is adopted, an accommodating hole for accommodating the cock is formed in the shell for accommodating the overflow loop, a thread structure is arranged between the cock and the accommodating hole, the sealing ring is wound on the cock, the sealing performance can be ensured, the first end of the cock is exposed outside, the horizontal plane of the first end is positioned in the accommodating hole, the operation can be touched, meanwhile, the end face of the first end is provided with a screw tap opening structure, so that when no tool is used in the operation site, the existing plugging structure for plugging the first return pipe can be used for preventing the first return pipe from being blocked (the flow rate adjustment), the existing technology can be repeated control of the existing cock without using the existing cock.

It should be noted that "the hydraulic lock 3 is provided with the first passage 31 and the second passage 32, and the lock body structure 33 is provided between the first passage 31 and the second passage 32" describes a structure of an existing pilot-operated check valve (i.e., a hydraulic valve and a safety valve), and there is no case of unclear description.

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 hydraulic control check valve of area translation overflow arrangement which characterized in that: the hydraulic cylinder comprises an oil pump oil storage pool (1), a hydraulic cylinder body (2) and a hydraulic lock (3), wherein a first passage (31) and a second passage (32) are arranged in the hydraulic lock (3), and a lock body structure (33) is arranged between the first passage (31) and the second passage (32);

a rodless cavity (21) of the hydraulic cylinder body (2) is connected with the oil pump oil storage pool (1) through a first passage (31), and a rod cavity (22) of the hydraulic cylinder body (2) is connected with the oil pump oil storage pool (1) through a second passage (32);

the overflow device also comprises an overflow loop, and the overflow loop is connected with the first passage (31) in parallel.

2. The pilot-controlled check valve with the direct-acting overflow device according to claim 1, characterized in that: the first end of the first passage (31) is a first oil pool connecting end, the second end is a first cylinder body connecting end, the first end of the second passage (32) is a second oil pool connecting end, and the second end is a second cylinder body connecting end;

the connecting end of the first oil pool and the connecting end of the second oil pool are respectively communicated with an oil storage pool (1) of the oil pump;

the first cylinder body connecting end is communicated with a rodless cavity (21) of the hydraulic cylinder body (2), and the second cylinder body connecting end is communicated with a rod cavity (22) of the hydraulic cylinder body (2).

3. The pilot-controlled check valve with the direct-acting overflow device according to claim 1, characterized in that: the overflow loop comprises a first return pipe (4), a first joint (42) and a second joint (43) are respectively arranged at two ends of the first return pipe (4), the first joint (42) is connected on a pipeline between the rodless cavity (21) and the connecting end of the first cylinder body, and the second joint is connected on a pipeline between the connecting end of the first oil pool and the oil storage pool (1) of the oil pump;

the automatic control device is characterized by further comprising an opening and closing structure (41), wherein the opening and closing structure (41) is arranged on a pipeline of the first return pipe (4), and the opening and closing structure (41) is used for controlling the opening and closing of the first return pipe (4).

4. A pilot operated check valve with a direct acting overflow as defined in claim 3 wherein: still include the shell, overflow return circuit sets up in the shell, and opening and closing structure (41) are provided with the external screw thread structure including the cock, cock outer wall, and the shell is provided with the accommodation hole that is used for holding the cock, and the accommodation hole inner wall is provided with the internal thread structure who corresponds with the external screw thread structure.

5. The pilot-controlled check valve with the direct-acting overflow device of claim 4, wherein: the end part of the outer side of the cock is provided with a straight clamping groove.

6. The pilot-controlled check valve with the direct-acting overflow device of claim 4, wherein: the end surface of one end of the cock, which is far away from the pipeline of the first return pipe (4), is positioned in the accommodating hole of the shell.

7. A pilot operated check valve with a direct acting overflow as defined in claim 3 wherein: sealing gaskets (44) are arranged at the opening connection parts of the first joint (42) and the second joint (43) of the first return pipe (4).