CN221195561U

CN221195561U - Active-passive combined hydraulic control system and vault pouring system

Info

Publication number: CN221195561U
Application number: CN202322844200.2U
Authority: CN
Inventors: 龚俊; 宋祖源; 伍锡文; 廖祥湧
Original assignee: Hunan Wuxin Tunnel Intelligent Equipment Co Ltd
Current assignee: Hunan Wuxin Tunnel Intelligent Equipment Co Ltd
Priority date: 2023-10-23
Filing date: 2023-10-23
Publication date: 2024-06-21
Anticipated expiration: 2033-10-23

Abstract

The utility model discloses a hydraulic control system with active and passive combination and a vault pouring system, wherein the hydraulic control system comprises an oil cylinder and a first one-way valve, an oil inlet of the first one-way valve is communicated with a rodless cavity of the oil cylinder, an oil outlet of the first one-way valve is communicated with a rod cavity, and the oil cylinder is in an active telescopic state and a passive telescopic state; in the active telescopic state, the oil cylinder extends out, the rod cavity is communicated with the oil inlet oil way, and the rod cavity is communicated with the oil return oil way when the oil cylinder retracts; under the passive telescopic state, the rod cavity is communicated with the oil inlet oil way and/or the oil return oil way, and the rodless cavity is communicated with the oil inlet oil way and/or the oil return oil way through the second one-way valve. The hydraulic control device is applied to the field of hydraulic control, and the oil way is designed to enable the oil cylinder to have an active telescopic state and a passive telescopic state, so that when the hydraulic control device is applied to two sets of equipment with independent telescopic strokes, one set of equipment can be effectively matched with the other set of equipment to move under the condition that the active movement of the equipment is not influenced.

Description

Active-passive combined hydraulic control system and vault pouring system

Technical Field

The utility model relates to the technical field of hydraulic control, in particular to a hydraulic control system with active and passive combination and a vault pouring system.

Background

The hydraulic control is widely applied to common large-scale equipment such as engineering machinery, and the like, and the hydraulic control mechanical arm, the supporting leg, the pipeline and other parts are irreplaceable due to the requirements of high load, tightness and the like caused by working conditions.

In the prior art, part of engineering machinery is not a single machine, but a plurality of systems are matched for use. In particular, one way of casting tunnel lining trolleys is to cast concrete integrated in the form of a cast-in-place pipe extending into the form. The lower part of the pouring pipe is connected with a pipeline of the distributing machine, the pouring pipe stretches to a set position, the pipe is required to be added and the pipe is required to be connected between the two pipes, and then the distributing machine starts to convey concrete and starts to pour.

In the work, the distributing machine and the vault pouring pipe system are matched hydraulic control systems, and the pouring pipe is matched with the distributing machine pipe to stretch and retract synchronously. In the actual situation, two situations can occur, the first is that the equipment user purchases the two sets of equipment used in a matched mode at the same time, and the second is that the equipment user purchases only one set of equipment, so that the equipment cannot be matched with the equipment to be used, and the integral functionality is lost. In addition, if the equipment user is required to use the matched two sets of independent equipment, the original equipment with the same function is rigid, and waste is caused; the versatility of the machine is also compromised.

Disclosure of utility model

In order to overcome the defects in the prior art, the utility model provides the active-passive combined hydraulic control system and the vault pouring system, which can effectively enable one set of equipment to move in cooperation with the other set of equipment without affecting the active movement of the equipment.

In order to achieve the above purpose, the utility model provides a hydraulic control system with active and passive combination, which comprises an oil cylinder and a first one-way valve, wherein an oil inlet of the first one-way valve is communicated with a rodless cavity of the oil cylinder, an oil outlet of the first one-way valve is communicated with a rod cavity of the oil cylinder, and the oil cylinder is provided with an active telescopic state and a passive telescopic state;

In the active telescopic state:

When the oil cylinder stretches out, the rod cavity and the rodless cavity are respectively communicated with an oil inlet oil way;

When the oil cylinder is retracted, the rod cavity is communicated with the oil inlet oil way, and the rodless cavity is communicated with the oil return oil way;

And in the passive telescopic state, the rod cavity is communicated with the oil inlet oil way and/or the oil return oil way, the rodless cavity is communicated with the oil inlet oil way and/or the oil return oil way through a second one-way valve, and an oil outlet of the second one-way valve is communicated with the rodless cavity.

In one embodiment, the hydraulic control system further comprises a three-position four-way solenoid valve;

The three-position four-way electromagnetic valve is provided with an oil inlet, an oil return port, a first working oil port and a second working oil port, the oil inlet is communicated with the oil inlet oil way, the oil return port is communicated with the oil return oil way, the first working oil port is communicated with the rodless cavity through the second oil way, and the second working oil port is communicated with the rod cavity through the third oil way;

When the first end of the three-position four-way electromagnetic valve is powered on, the first working oil port and the second working oil port are respectively communicated with the oil inlet;

When the second end of the three-position four-way electromagnetic valve is powered on, the first working oil port is communicated with the oil return port, and the second working oil port is respectively communicated with the oil inlet.

In one embodiment, the third oil path is communicated with the oil inlet oil path and/or the oil return oil path through a fourth oil path;

The fourth oil way is provided with a control mechanism capable of controlling the fourth oil way to be connected or disconnected;

When the fourth oil way is disconnected, the oil cylinder is in the active telescopic state;

And when the fourth oil way is conducted, the oil cylinder is in the passive telescopic state.

In one embodiment, the control mechanism is a travel valve.

In one embodiment, the control mechanism is a solenoid valve.

In one embodiment, the rodless cavity is communicated with the oil inlet oil way and/or the oil return oil way through a first oil way;

The second one-way valve is arranged on the first oil path.

In one embodiment, the oil inlet passage is communicated with the oil return passage through a fifth passage.

In one embodiment, the return oil path is provided with a solenoid valve.

In one embodiment, the oil inlet path and the oil return path are provided with overflow valves.

In order to achieve the above purpose, the utility model also provides a vault pouring system, which comprises a pouring pipe and the hydraulic control system;

The pouring pipe is connected to the trolley template in a sliding mode, a first end of an oil cylinder in the hydraulic control system is connected with the pouring pipe, and a second end of the oil cylinder in the hydraulic control system is connected with the trolley template.

The utility model has the following beneficial technical effects:

1. The hydraulic control system with active and passive combination in the utility model enables the oil cylinder to have an active telescopic state and a passive telescopic state by designing the oil way, and when the hydraulic control system is applied to two sets of equipment with independent telescopic travel, one set of equipment can be effectively matched with the other set of equipment to move under the condition that the active movement of the equipment is not influenced;

2. When the oil cylinder is in a passive telescopic state, the hydraulic control system with the active and passive combination can directly supplement oil from the oil tank through the rodless cavity of the oil cylinder, has small resistance and operates smoothly, so that the service life of the whole mechanism is prolonged;

3. According to the hydraulic control system with the active and passive combination, the overflow valve is additionally arranged in the preferable scheme, so that the pressure can be adjusted steplessly through the overflow valve, and various working conditions are met;

4. In the hydraulic control system with active and passive combination, a stroke valve or an electromagnetic valve is used as a control mechanism in a preferred scheme, so that the automatic switching of the oil cylinder between an active telescopic state and a passive telescopic state can be controlled according to preset conditions, manual operation is avoided, and the working efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a hydraulic control system according to embodiment 1 of the present utility model;

Fig. 2 is a schematic diagram of the flow direction of an oil path when the hydraulic control system in embodiment 1 of the present utility model extends in a passive telescopic state, wherein the arrow direction is the flow direction of the oil path;

Fig. 3 is a schematic diagram of the flow direction of the oil path when the hydraulic control system in embodiment 1 of the present utility model is retracted in a passive telescopic state, wherein the arrow direction is the flow direction of the oil path;

FIG. 4 is a schematic diagram of another embodiment of the hydraulic control system according to example 1 of the present utility model;

FIG. 5 is a schematic view of the structure of the casting pipe of the embodiment 2 of the present utility model when the casting pipe is not connected with the distributor pipe or other casting equipment;

Fig. 6 is a schematic structural diagram of the casting pipe and the distributor pipe or other casting equipment in the embodiment 2 of the present utility model when the oil cylinder extends out;

fig. 7 is a schematic view of the structure of the casting pipe and the distributor pipe or other casting equipment in embodiment 2 of the present utility model when the cylinder is retracted.

Reference numerals: the hydraulic system comprises an oil cylinder 1, a sixth oil way 2, a first one-way valve 3, a first oil way 4, a second one-way valve 5, an oil inlet oil way 6, an oil return oil way 7, a three-position four-way electromagnetic valve 8, a second oil way 9, a third oil way 10, a fourth oil way 11, a control mechanism 12, an oil tank 13, a fifth oil way 14, an overflow valve 15, an electromagnetic valve 16, a pouring pipe 17, a trolley template 18, a travel valve 19, a distributor pipe or other pouring equipment 20.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; the device can be mechanically connected, electrically connected, physically connected or wirelessly connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.

Example 1

The embodiment discloses a hydraulic control system (hereinafter referred to as a "hydraulic control system") with active and passive combination, which is mainly used for controlling the expansion and contraction of an oil cylinder 1, so that the oil cylinder 1 has an active expansion and contraction state and a passive expansion and contraction state. In the active telescopic state, the oil cylinder 1 stretches under the drive of hydraulic oil; under the passive telescopic state, the oil cylinder 1 performs telescopic action under the action of external driving force, and meanwhile, the smooth oil path between the rod cavity and the rodless cavity of the oil cylinder 1 is kept. In the specific application process, the hydraulic control system can be applied to equipment with a telescopic stroke or a lifting stroke, so that the equipment can realize active action under the driving of the oil cylinder 1 in an active telescopic state, and can keep the normal operation of the oil cylinder 1 when the equipment is driven by external force to act passively, and one set of equipment can be effectively matched with the other set of equipment to move under the condition that the active movement of the equipment is not influenced.

Specifically, the rod-shaped cavity and the rodless cavity of the oil cylinder 1 in the present embodiment are communicated through a sixth oil passage 2, and a first check valve 3 is provided on the sixth oil passage 2. The rodless cavity is communicated with an oil inlet oil way 6 and/or an oil return oil way 7 through a first oil way 4, and a second one-way valve 5 is arranged on the first oil way 4. The oil inlet of the first one-way valve 3 is communicated with the rodless cavity of the oil cylinder 1, the oil outlet is communicated with the rod cavity of the oil cylinder 1, the oil outlet of the second one-way valve 5 is communicated with the rodless cavity, and the oil inlet of the second one-way valve 5 is communicated with the oil inlet oil way 6 and/or the oil return oil way 7.

When the oil cylinder 1 is in an active telescopic state, if the oil cylinder 1 is in an extending action at present, the rod cavity and the rodless cavity of the oil cylinder 1 are respectively communicated with the oil inlet oil way 6, so that the principle of differential connection is utilized, namely, when the oil cylinder 1 extends, the rod cavity and the rodless cavity of the oil cylinder 1 are both filled with oil, and due to the existence of a piston rod, the sectional area of the rodless cavity is larger than that of the oil cylinder cavity, so that the hydraulic pressure of the rodless cavity is larger than that of the rod cavity, hydraulic oil in the rod cavity flows back to the rodless cavity, the flow of hydraulic oil in the rodless cavity is promoted, and the oil cylinder 1 is enabled to extend actively and rapidly. If the oil cylinder 1 currently performs retraction, a rod cavity of the oil cylinder 1 is communicated with the oil inlet oil path 6, and a rodless cavity is communicated with the oil return oil path 7, so that oil is fed into the oil inlet oil path 6 and returned into the oil return oil path 7, and the oil cylinder 1 actively retracts.

When the oil cylinder 1 is in a passive telescopic state, the rod cavity is communicated with the oil inlet oil way 6 and/or the oil return oil way 7, the rodless cavity is communicated with the oil inlet oil way 6 and/or the oil return oil way 7 through the second one-way valve 5, and the oil outlet of the second one-way valve 5 is communicated with the rodless cavity, and the oil inlet is communicated with the oil inlet oil way 6 and/or the oil return oil way 7, so that the one-way communication from the oil inlet oil way 6 and/or the oil return oil way 7 to the rodless cavity is maintained. When the oil cylinder 1 passively stretches out under the action of external force, the rod-free cavity space is enlarged, the rod-free cavity space is reduced, and the oil tank 13 can supplement oil to the rod-free cavity of the oil cylinder 1 through the oil inlet oil way 6 and/or the oil return oil way 7 due to the existence of the second one-way valve 5, namely, the oil is shown in fig. 2; the hydraulic oil with the rod cavity returns to the oil tank 13 through the oil inlet oil path 6 and/or the oil return oil path 7 without being greatly blocked, and the service life of the oil cylinder 1 is not affected. When the oil cylinder 1 passively retracts under the action of external force, the rod cavity space is enlarged, the rod cavity-free space is reduced, hydraulic oil in the rod cavity enters the rod cavity through the sixth oil way 2 and the first one-way valve 3, so that the oil cylinder 1 can successfully retract, and the redundant hydraulic oil flows back to the oil tank 13 through the oil inlet oil way 6 and/or the oil return oil way 7, namely as shown in fig. 3.

In the implementation process, the hydraulic control system further comprises a three-position four-way electromagnetic valve 8 for controlling the oil cylinder 1 to switch between the extending action and the retracting action in the active telescopic state. Specifically, the three-position four-way solenoid valve 8 is provided with an oil inlet P, an oil return port T, a first working oil port a and a second working oil port B. The oil inlet P is communicated with the oil inlet oil way 6, the oil return port T is communicated with the oil return oil way 7, the first working oil port A is communicated with the rodless cavity through the second oil way 9, and the second working oil port B is communicated with the rod cavity through the third oil way 10. When the electromagnet at the first end of the three-position four-way electromagnetic valve 8 is powered on, the first working oil port A and the second working oil port B are respectively communicated with the oil inlet P, namely a rod cavity and a rodless cavity are respectively communicated with the oil inlet oil way 6; when the electromagnet at the second end of the three-position four-way electromagnetic valve 8 is powered on, the first working oil port A is communicated with the oil return port T, the second working oil port B is respectively communicated with the oil inlet P, namely, a rod cavity is communicated with the oil inlet oil way 6, and a rodless cavity is communicated with the oil return oil way 7.

In this embodiment, the third oil path 10 is communicated with the oil inlet path 6 and/or the oil return path 7 through the fourth oil path 11, and a control mechanism 12 capable of controlling the on/off of the fourth oil path 11 is provided on the fourth oil path 11. When the control mechanism 12 controls the fourth oil path 11 to be disconnected, the rod cavity and the rodless cavity of the oil cylinder 1 can only be communicated with the oil inlet oil path 6 and the oil return oil path 7 through the oil paths in the direction of the three-position four-way electromagnetic valve 8, namely, the oil cylinder 1 is in the active telescopic state. When the control mechanism 12 controls the fourth oil way 11 to be conducted, the rod cavity of the oil cylinder 1 can be directly communicated with the oil inlet oil way 6 and the oil return oil way 7 through the fourth oil way 11, and the hydraulic oil in the rod cavity can be left in the oil return tank 13 without being greatly hindered, namely, the oil cylinder 1 is in the passive telescopic state.

It should be noted that, although the control mechanism 12 is illustrated as a stroke valve in the present embodiment, a solenoid valve may be used as the control mechanism 12 in a specific application, and a mechanical valve controlled manually may be used as the control mechanism 12.

In this embodiment, the oil inlet passage 6 and the oil return passage 7 are communicated through the fifth passage 14, so that the first passage 4 and the third passage 10 can be simultaneously communicated with the oil inlet passage 6 and the oil return passage 7. Preferably, the oil inlet oil way 6 and the oil return oil way 7 are provided with overflow valves 15, and the pressure of hydraulic oil can be adjusted in a stepless manner through the overflow valves 15, so that various working conditions are met. Further preferably, the oil return oil way 7 is also provided with a solenoid valve 16 for controlling the on-off of the oil return oil way 7, so that the oil inlet oil way 6 and the oil return oil way 7 can be in an off state through the three-position four-way solenoid valve 8 and the solenoid valve 16 when the hydraulic pump is started, and the load starting of the hydraulic pump is avoided.

It is to be noted that, although the hydraulic control system illustrated in the present embodiment has two cylinders 1, only one cylinder 1, i.e., as shown in fig. 4, may be used in particular applications. It is also possible to provide more than three cylinders 1, which are connected in the same manner as in fig. 1 and 4, so that the present embodiment is not shown.

Example 2

Fig. 5 to 7 show a dome pouring system according to the present embodiment, which mainly includes a pouring pipe 17 and the hydraulic control system of embodiment 1, and mainly is a specific application of the hydraulic control system of embodiment 1.

Specifically, in the vault pouring system, the pouring pipe 17 is slidably connected to the trolley form 18, and in the hydraulic control system, the first end of the oil cylinder 1 is rigidly connected to the pouring pipe 17, and the second end of the oil cylinder 1 is rigidly connected to the trolley form 18, so that the pouring pipe 17 can be lifted and lowered on the trolley form 18 along with the expansion and contraction of the oil cylinder 1. In this embodiment, the control mechanism in the hydraulic control system is a stroke valve 19 provided on the pouring pipe 17.

Referring to fig. 5, when the pouring pipe 17 is not connected with the spreader pipe or other pouring equipment 20, the stroke valve 19 is in a normally closed state, that is, the fourth oil passage in the hydraulic control system is kept in a disconnected state, and the cylinder 1 in the hydraulic control system is in an active telescopic state. At this time, the active lifting of the pouring pipe 17 can be realized by controlling the first end electromagnet or the second end electromagnet of the three-position four-way electromagnetic valve in the hydraulic control system to be electrified.

In addition, due to the presence of the first oil path and the travel valve 19, the hydraulic control system can enable the pouring pipe 17 to be lifted and lowered passively due to external force while not affecting the active action. Referring to fig. 6 and 7, when pouring pipe 17 is connected with distributor pipe or other pouring equipment 20, stroke valve 19 is changed from a normally closed state to a normally open state, and a fourth oil passage in the hydraulic control system is kept in a conducting state. When the pouring pipe 17 is lifted by the distributor pipe or other pouring equipment 20, the space of the rodless cavity is reduced, the space of the rod-containing cavity is enlarged, hydraulic oil in the rodless cavity of the oil cylinder 1 enters the rod-containing cavity through the sixth oil way and the first one-way valve, so that the oil cylinder 1 can be smoothly contracted, the passive lifting action of the pouring pipe 17 is completed, and redundant hydraulic oil returns to the oil tank from the third oil way. When the pouring pipe 17 is pulled down by the distributor pipe or other pouring equipment 20, the rod-free cavity space is enlarged, and the rod-free cavity space is reduced, because of the existence of the second one-way valve, the oil tank can supplement oil to the rod-free cavity of the oil cylinder 1, and the oil with the rod cavity returns to the oil tank from the third oil path without being greatly blocked, so that the service life of the oil cylinder 1 is not influenced.

By using the hydraulic control system of example 1 in the dome casting system, the casting pipe 17 can be raised and lowered passively in coordination with the movement of the distributor pipe or other casting equipment 20, without additional supply of oil to the cylinders 1 of the casting pipe 17. And the work of adding and managing the pipe when the distributor pipe or other pouring equipment 20 is connected with the pouring pipe 17 if only the pouring pipe 17 is actively lifted is avoided.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. The hydraulic control system is characterized by comprising an oil cylinder and a first one-way valve, wherein an oil inlet of the first one-way valve is communicated with a rodless cavity of the oil cylinder, an oil outlet of the first one-way valve is communicated with a rod cavity of the oil cylinder, and the oil cylinder is in an active telescopic state and a passive telescopic state;

In the active telescopic state:

2. The active-passive combination hydraulic control system of claim 1, further comprising a three-position four-way solenoid valve;

3. The active-passive combination hydraulic control system according to claim 2, wherein the third oil passage communicates with the oil intake oil passage and/or the oil return oil passage through a fourth oil passage;

4. The active-passive hydraulic control system of claim 3, wherein the control mechanism is a travel valve.

5. The active-passive hydraulic control system of claim 3, wherein the control mechanism is a solenoid valve.

6. The active-passive combination hydraulic control system according to any one of claims 1 to 5, wherein the rodless chamber communicates with the oil intake passage and/or the oil return passage through a first oil passage;

The second one-way valve is arranged on the first oil path.

7. The active-passive hydraulic control system according to any one of claims 1 to 5, wherein the oil intake passage and the oil return passage communicate through a fifth oil passage.

8. The active-passive hydraulic control system according to any one of claims 1 to 5, wherein the return oil circuit is provided with a solenoid valve.

9. The active-passive hydraulic control system according to any one of claims 1 to 5, wherein the oil intake passage and the oil return passage are provided with relief valves.

10. A dome casting system comprising a casting pipe and the hydraulic control system of any one of claims 1 to 9;