CN209761417U - Hydraulic control system for cutting arm of boom-type heading machine - Google Patents
Hydraulic control system for cutting arm of boom-type heading machine Download PDFInfo
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- CN209761417U CN209761417U CN201920282007.5U CN201920282007U CN209761417U CN 209761417 U CN209761417 U CN 209761417U CN 201920282007 U CN201920282007 U CN 201920282007U CN 209761417 U CN209761417 U CN 209761417U
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Abstract
the utility model provides a hydraulic control system for a cutting arm of a cantilever type development machine, which comprises an electric control system, a cutting arm lifting oil cylinder and a cutting arm rotary oil cylinder; the cutting arm lifting oil cylinder is connected with a first reversing valve, and the cutting arm rotating oil cylinder is connected with a second reversing valve; a first valve bank and a second valve bank are arranged between the first reversing valve and the electric control system; the first valve group comprises a plurality of electric proportional pressure reducing valves, and the second valve group comprises a plurality of electric proportional overflow valves; the oil outlet of each electric proportional pressure reducing valve is respectively connected with the control ports of the first reversing valve and the second reversing valve; the oil outlet of each electric proportional overflow valve is respectively connected with the pressure measuring ports of the first reversing valve and the second reversing valve; and the electric control system is used for providing electric control signals for the first valve group and the second valve group and controlling the actions of the first valve group and the second valve group. The utility model discloses under the condition that need not to change the multichannel switching-over valve of control cutting arm action, realize the load self-adaptation of entry driving machine cutting arm fast and cut.
Description
Technical Field
The utility model relates to a entry driving machine technical field especially relates to a boom type entry driving machine cutting arm hydraulic control system.
Background
The cantilever type heading machine is core equipment for tunneling work of tunnels such as coal mine tunnels, highway tunnels, railway tunnels, water conservancy tunnels and the like. In the traditional tunneling process, most cantilever type tunneling machines operate by operating equipment in a manual or remote control mode, and the tunnel forming quality and the cutting tooth consumption can be ensured only by depending on manual observation and working experience of drivers operating the tunneling machines; in the cutting process of the heading machine, because the rock hardness in various tunnels changes, the cutting arm drives the oil cylinder to cause uneven load of the cutting head under the constant-speed constant-pressure state, the output power of the cutting motor is unstable, the instantaneous impact of a hydraulic system is large, the damage of a cutting part structural part, an electric part and a hydraulic part is easily caused, the consumption of cutting teeth is greatly increased, and the tunneling cost of the tunnels is increased.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the not enough and defect that prior art exists, provide a boom-type roadheader cutting arm hydraulic control system, under the condition that need not to change the multichannel switching valve of control cutting arm action, realize the load self-adaptation of roadheader cutting arm fast and cut.
for realizing the purpose, the utility model discloses the technical scheme who adopts is:
A hydraulic control system for a cutting arm of a boom-type roadheader comprises an electric control system, a cutting arm lifting oil cylinder and a cutting arm rotating oil cylinder; the cutting arm lifting oil cylinder is connected with a first reversing valve, and the cutting arm rotary oil cylinder is connected with a second reversing valve; a first valve bank and a second valve bank are arranged between the first reversing valve and the electric control system;
The first valve group comprises a plurality of electric proportional pressure reducing valves, and the second valve group comprises a plurality of electric proportional overflow valves;
the oil outlet of each electric proportional pressure reducing valve is respectively connected with the control ports of the first reversing valve and the second reversing valve, and the oil discharge ports of the electric proportional pressure reducing valves are respectively connected with the oil tank;
The oil outlet of each electric proportional overflow valve is respectively connected with the pressure measuring ports of the first reversing valve and the second reversing valve, and the oil discharging port of each electric proportional overflow valve is respectively connected with the oil tank;
And the electric control system is used for providing electric control signals for the first valve group and the second valve group and controlling the actions of the first valve group and the second valve group.
Further, the number of the electro proportional pressure reducing valves is 4.
Further, each electric proportional pressure reducing valve is connected with a shuttle valve.
Furthermore, an oil inlet of each shuttle valve is respectively connected with an oil discharge port of the electric proportional pressure reducing valve or respectively connected with a control pipeline of the hydraulic control four-way pilot handle.
Further, the first reversing valve and the second reversing valve are both hydraulic control proportional multi-way reversing valves.
Furthermore, the electric proportional pressure reducing valve is used for adjusting the swinging speeds of the cutting arm lifting oil cylinder and the cutting arm rotating oil cylinder;
and the electric proportional overflow valve is used for adjusting the real-time working pressure of the cutting arm lifting oil cylinder and the cutting arm rotating oil cylinder.
the utility model has the advantages that:
The utility model discloses a first valves and the second valves that set up can realize that entry driving machine cutting arm moves solitary speed control or pressure control, do and realize hybrid control between them, satisfy the hydraulic control requirement of the intelligent cut of entry driving machine.
the utility model connects the first valve group and the second valve group with the hydraulic control proportional multi-way reversing valve on the basis of the original cantilever type heading machine, and can realize the hydraulic control of self-adaptive cutting of the load of the cutting head under the condition of not changing the original hydraulic control proportional multi-way reversing valve, thereby quickly realizing the upgrading and reconstruction of the old machine or the stock machine;
The utility model discloses can regard liquid accuse operation control as standby control, guarantee entry driving machine cutting operational reliability.
Drawings
Fig. 1 is a schematic structural diagram of a cutting arm hydraulic control system of the boom-type roadheader of the utility model.
Fig. 2 is the structure schematic diagram of the electric proportional pressure reducing valve of the cutting arm hydraulic control system of the boom-type roadheader.
Fig. 3 is the structure schematic diagram of the electric proportional overflow valve of the cutting arm hydraulic control system of the boom-type roadheader.
Fig. 4 is a schematic diagram of embodiment 1 of the hydraulic control system of the cutting arm of the boom-type roadheader of the present invention.
Fig. 5 is a schematic diagram of embodiment 2 of the hydraulic control system of the cutting arm of the boom-type roadheader of the present invention.
fig. 6 is a schematic view of the connection relationship between the pilot-controlled proportional multi-way directional valve and the corresponding cylinder in fig. 4 and 5 according to the present invention.
Fig. 7 is a schematic view illustrating a connection relationship between the pilot-controlled proportional multi-way directional valve of fig. 4 and the first valve set and the second valve set.
Fig. 8 is a schematic view showing a connection relationship between the pilot-controlled proportional multi-way directional valve in fig. 5 and the first and second valve banks and the pilot-controlled four-way pilot handle according to the present invention.
The reference numbers in the drawings are as follows: the hydraulic control device comprises a hydraulic control system 1, an electric proportional pressure reducing valve 2, an electric proportional overflow valve 3, a hydraulic control proportional multi-way reversing valve 4, a cutting arm lifting oil cylinder 5, a cutting arm rotating oil cylinder 6, a shuttle valve 7, a hydraulic control four-way pilot handle 8 and an electromagnetic valve 9.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments:
embodiment 1, as shown in fig. 1 ~ 4, a hydraulic control system for a cutting arm of a boom ~ type roadheader comprises an electric control system 1, a cutting arm lifting oil cylinder 5 and a cutting arm rotary oil cylinder 6, wherein the cutting arm lifting oil cylinder 5 is connected with a first reversing valve, and the cutting arm rotary oil cylinder 6 is connected with a second reversing valve;
The first valve group comprises a plurality of electric proportional pressure reducing valves 2, and the second valve group comprises a plurality of electric proportional overflow valves 3;
the oil outlet of each electric proportional pressure reducing valve 2 is respectively connected with the control ports of the first reversing valve and the second reversing valve, and the oil discharge port of each electric proportional pressure reducing valve 2 is respectively connected with the oil tank;
The oil outlet of each electric proportional overflow valve 3 is respectively connected with the pressure measuring ports of the first reversing valve and the second reversing valve, and the oil discharging port of each electric proportional overflow valve 3 is respectively connected with the oil tank;
The electric proportional pressure reducing valve 2 is used for adjusting the swinging speeds of the cutting arm lifting oil cylinder 5 and the cutting arm rotary oil cylinder 6;
And the electric proportional overflow valve 3 is used for adjusting the real-time working pressure of the cutting arm lifting oil cylinder 5 and the cutting arm rotary oil cylinder 6.
The electric control system 1 is used for providing electric control signals for the first valve group and the second valve group and controlling the actions of the first valve group and the second valve group.
Specifically, the electric control system 1 adopts an electric control system 1 using a PLC as a core controller, and sends corresponding electric control signals to the first valve group and the second valve group according to cutting requirements.
As a preferred embodiment, the number of the electro proportional pressure reducing valves 2 is 4; the number of the electric proportional overflow valves 3 is two, three or four, and the control requirements can be realized.
It should be noted that, after the electric proportional pressure reducing valve 2 is added, the original hydraulic control four-way pilot handle 8 for controlling the lifting and rotating actions of the cutting arm of the development machine can be replaced by the electric control pilot handle respectively, and the electric control operation of the electric control pilot handle controls the electric proportional pressure reducing valve 2 respectively, so as to control the lifting and rotating actions of the cutting arm.
as a preferred embodiment, a shuttle valve 7 is connected to each of the electro proportional pressure reducing valves 2. An oil inlet of each shuttle valve 7 is respectively connected with an oil discharge port of the electric proportional pressure reducing valve 2; the shuttle valve 7 is used for comparing the pressure of the passing hydraulic oil, preferably hydraulic oil with high pressure is used for controlling the action of the cutting arm.
preferably, the first reversing valve and the second reversing valve are both hydraulic control proportional multi-way reversing valves 4.
As an implementation manner, the electric proportional pressure reducing valve 2 in the embodiment adopts a cartridge type electric proportional pressure reducing valve; the electric proportional overflow valve 3 is a plug-in electric proportional overflow valve; the shuttle valve 7 is a cartridge type shuttle valve, and other types of shuttle valves 7 can be replaced.
specifically, as shown in fig. 6 ~ 7, a first valve group is installed, a proportional pressure reducing valve 2 is installed in a hydraulic control system of an original heading machine, four oil outlets of the proportional pressure reducing valve 2 are respectively connected with control ports a3, b3, a4 and b4 of a hydraulic control proportional multi ~ way reversing valve 4 for controlling a cutting arm lifting oil cylinder 5 and a cutting arm rotary oil cylinder 6 through rubber pipes, oil inlets of a shuttle valve 7 are respectively connected with oil discharging ports of the proportional pressure reducing valve 2, and an oil discharging port of the shuttle valve 7 is connected with an oil tank.
Installing a second valve bank; four oil outlets of the electric proportional overflow valve 3, namely a P port of the electric proportional overflow valve 3 are respectively connected with pressure measuring ports MA and MB rubber hose pipelines of a hydraulic control proportional multi-way reversing valve 4Ls of a cutting arm lifting oil cylinder 5 and a cutting arm rotary oil cylinder 6 of an original control heading machine; an oil discharge port of the electric proportional overflow valve 3 is connected with an oil tank; after the first valve bank and the second valve bank are installed, the first valve bank and the second valve bank are connected into the electric control system 1 to form an electric control loop with self-adaptive cutting load, and the cutting hydraulic control requirement is met.
Example 2: the structure of the embodiment is basically the same as that of embodiment 1, and the same parts are not repeated, except that, as shown in fig. 5 and 8, in the hydraulic control system for the cutting arm of the boom-type roadheader, each electro-proportional pressure reducing valve 2 is connected with a shuttle valve 7, and an oil inlet of each shuttle valve 7 is connected with a control pipeline of a hydraulic control four-way pilot handle 8; an electromagnetic valve 9 for switching is arranged between the hydraulic control four-way pilot handle 8 and the electric proportional pressure reducing valve 2 and is used for switching between hydraulic operation and electric control operation; the hydraulic control operation of the hydraulic control four-way pilot handle 8 is used as a backup through the electric control operation, so that the hydraulic control operation and the electric control operation of the cutting arm are realized, and the reliability of the cutting control of the development machine is improved.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the present invention, so that equivalent changes or modifications made by the structure, features and principles of the present invention should be included in the claims of the present invention.
Claims (6)
1. a hydraulic control system for a cutting arm of a cantilever type heading machine comprises an electric control system (1), a cutting arm lifting oil cylinder (5) and a cutting arm rotating oil cylinder (6); the cutting arm lifting oil cylinder (5) is connected with a first reversing valve, and the cutting arm rotating oil cylinder (6) is connected with a second reversing valve; a first valve bank and a second valve bank are arranged between the first reversing valve and the electric control system (1) and between the second reversing valve and the electric control system (1);
The first valve group comprises a plurality of electric proportional pressure reducing valves (2), and the second valve group comprises a plurality of electric proportional overflow valves (3);
The oil outlet of each electric proportional pressure reducing valve (2) is respectively connected with the control ports of the first reversing valve and the second reversing valve, and the oil discharging ports of the electric proportional pressure reducing valves (2) are respectively connected with the oil tank;
An oil outlet of each electric proportional overflow valve (3) is respectively connected with pressure measuring ports of a first reversing valve and a second reversing valve, and an oil discharging port of each electric proportional overflow valve (3) is respectively connected with an oil tank;
The electronic control system (1) is used for providing electronic control signals for the first valve group and the second valve group and controlling the actions of the first valve group and the second valve group.
2. A boom miner cutting arm hydraulic control system according to claim 1 characterized in that the number of electro proportional pressure reducing valves (2) is 4.
3. A boom miner cutting arm hydraulic control system according to claim 1 characterized in that a shuttle valve (7) is connected to each electro proportional pressure reducing valve (2).
4. The hydraulic control system for the cutting arm of the boom-type roadheader as claimed in claim 3, wherein the oil inlet of each shuttle valve (7) is respectively connected with the oil discharge port of the electric proportional pressure reducing valve (2) or respectively connected with the control pipeline of the hydraulic control four-way pilot handle (8).
5. The hydraulic control system of the cutting arm of the boom-type roadheader as claimed in claim 1, wherein the first reversing valve and the second reversing valve are both hydraulic control proportional multi-way reversing valves (4).
6. The hydraulic control system for the cutting arm of the boom-type roadheader as claimed in claim 1, wherein the electric proportional pressure reducing valve (2) is used for adjusting the swinging speed of the cutting arm lifting cylinder (5) and the cutting arm rotating cylinder (6);
and the electric proportional overflow valve (3) is used for adjusting the real-time working pressure of the cutting arm lifting oil cylinder (5) and the cutting arm rotating oil cylinder (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920282007.5U CN209761417U (en) | 2019-03-06 | 2019-03-06 | Hydraulic control system for cutting arm of boom-type heading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920282007.5U CN209761417U (en) | 2019-03-06 | 2019-03-06 | Hydraulic control system for cutting arm of boom-type heading machine |
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| CN209761417U true CN209761417U (en) | 2019-12-10 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901195A (en) * | 2021-01-21 | 2021-06-04 | 中国矿业大学 | Automatic section forming control system and method for cantilever longitudinal shaft type heading machine |
| CN113819097A (en) * | 2021-09-30 | 2021-12-21 | 浙江三一装备有限公司 | Control valve group, hydraulic system, engineering machinery and arm support overturning control method of engineering machinery |
| CN113983015A (en) * | 2021-10-12 | 2022-01-28 | 中国煤炭科工集团太原研究院有限公司 | Hydraulic control system and method for double cutting arms of heading machine |
| CN115163597A (en) * | 2022-07-07 | 2022-10-11 | 中铁工程装备集团有限公司 | Stable hydraulic system for cutting part of cantilever heading machine and control method |
-
2019
- 2019-03-06 CN CN201920282007.5U patent/CN209761417U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901195A (en) * | 2021-01-21 | 2021-06-04 | 中国矿业大学 | Automatic section forming control system and method for cantilever longitudinal shaft type heading machine |
| CN113819097A (en) * | 2021-09-30 | 2021-12-21 | 浙江三一装备有限公司 | Control valve group, hydraulic system, engineering machinery and arm support overturning control method of engineering machinery |
| CN113983015A (en) * | 2021-10-12 | 2022-01-28 | 中国煤炭科工集团太原研究院有限公司 | Hydraulic control system and method for double cutting arms of heading machine |
| CN113983015B (en) * | 2021-10-12 | 2024-04-12 | 中国煤炭科工集团太原研究院有限公司 | Hydraulic control system and method for double cutting arms of heading machine |
| CN115163597A (en) * | 2022-07-07 | 2022-10-11 | 中铁工程装备集团有限公司 | Stable hydraulic system for cutting part of cantilever heading machine and control method |
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