Drill jumbo and integrated control valve system thereof

Abstract

The invention discloses a drill jumbo and an integrated control valve system thereof, and belongs to the technical field of engineering machinery. The integrated control valve system comprises a first linkage plate valve, a third linkage plate valve and a second linkage plate block arranged between the first linkage plate valve and the third linkage plate valve. Wherein one side of the first linkage plate valve is further provided with an inlet linkage plate valve, the inlet linkage plate valve, the first linkage plate valve, the second linkage plate valve and the third linkage plate valve jointly form the integrated control valve system, and oil return channels of the inlet linkage plate valve, the first linkage plate valve, the second linkage plate valve and the third linkage plate valve are communicated. The main purpose is that the number of hydraulic valve elements can be reduced to a large extent, all the hydraulic elements are arranged in a centralized mode, and parameters of a rock drilling system can be conveniently and rapidly adjusted in cooperation with a PLC and other control devices.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, and more particularly to a rock drilling rig and an integrated control valve system thereof. Background Art

[0002] The rock drill is a kind of engineering machinery used for underground excavation and mining, and its core working mechanism is the rock drill. The rock drill mainly works by a combination of impact, propulsion, and rotation. Due to the uneven hardness and density of the rock, the rock drill needs to adjust and match the rock drilling pressure in real time according to different rock conditions to maximize the mining efficiency and protect the rock drill.

[0003] The traditional direct control valve system has many components, which are scattered, have low integration and are inconvenient to adjust parameters. In addition, the pilot valve is arranged on the operation panel, which causes many control oil pipes to be arranged on the control panel, affecting the safety and cleanliness of the control room.

[0004] Some electric control valve systems in the prior art simply change the traditional handle direct control to solenoid valve direct control, or change the handle hydraulic pilot to solenoid valve hydraulic pilot, so as to achieve a simple reversing function of the main valve. If different pressure levels or speed levels are to be set, multiple relief valves or throttle valves need to be introduced for switching, resulting in many system components and inconvenient parameter adjustment. Summary of the invention

[0005] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0006] Some embodiments of the present application propose a rock drilling rig and an integrated control valve system thereof to solve the technical problems mentioned in the above background technology section.

[0007] As the first aspect of the present application, some embodiments of the present application provide an integrated control valve system, which includes a first link valve, a third link valve and a second link valve block arranged between the first link valve and the third link valve; an inlet link valve is also provided on one side of the first link valve, and the inlet link valve, the first link valve, the second link valve block and the third link valve together constitute the integrated control valve system, and the return oil channels of the inlet link valve, the first link valve, the second link valve block and the third link valve are all connected.

[0008] Furthermore, the integrated control valve system also includes a first hydraulic pump, a second hydraulic pump and a third hydraulic pump, wherein the oil inlet of the inlet link valve is connected to the oil outlet of the first hydraulic pump; the oil inlet of the second link valve block is connected to the oil outlet of the second hydraulic pump; and the oil inlet of the third link valve is connected to the third hydraulic pump.

[0009] Further, the first link valve comprises a first link valve first pilot valve, a first link valve second pilot valve and a first link valve main valve, wherein the first link valve first pilot valve and the first link valve second pilot valve are connected to the pilot oil source port, and the oil return ports of the first link valve first pilot valve and the first link valve second pilot valve are connected to the pilot oil return port; the oil outlets of the first link valve first pilot valve and the first link valve second pilot valve are respectively connected to the hydraulic control port of the first link valve main valve.

[0010] Furthermore, the first pilot valve of the first link valve and the second pilot valve of the first link valve are both proportional solenoid valves.

[0011] Furthermore, the third linked valve comprises a third linked valve first pilot valve, a third linked valve second pilot valve and a third linked valve main valve, wherein the third linked valve first pilot valve and the third linked valve second pilot valve are connected to the pilot oil source port, and the oil return ports of the third linked valve first pilot valve and the third linked valve second pilot valve are connected to the pilot oil return port; the oil outlets of the third linked valve first pilot valve and the third linked valve second pilot valve are respectively connected to the hydraulic control port of the third linked valve main valve.

[0012] Furthermore, the first pilot valve of the third link valve and the second pilot valve of the third link valve are both proportional solenoid valves.

[0013] Furthermore, the second valve block includes a first one-way valve, a first relief valve, a flow valve, a second one-way valve, a second relief valve and a damping hole, the oil inlet of the first relief port is connected to the oil outlet of the second hydraulic pump, the oil inlet of the flow valve is connected to the oil outlet of the first hydraulic pump, the oil inlet of the first one-way valve is connected to the oil outlet of the first relief valve, the oil outlet of the first one-way valve is connected to the oil inlet of the first relief valve, and the oil outlet of the second one-way valve is connected to the oil inlet of the third link valve; wherein the flow valve and the second relief valve are both proportional solenoid valves.

[0014] Furthermore, the outlet of the flow valve is connected to the impact hammer through the oil port of the second valve block, and the other oil port of the second valve block is connected to the reversing valve.

[0015] Furthermore, the integrated control valve system also includes a rotary motor, an impact hammer and a propulsion actuator, the first link valve is connected to the rotary motor through a hydraulic pipeline, the second link valve block is connected to the impact hammer and the reversing valve through a hydraulic pipeline, and the third link valve is connected to the propulsion actuator through a hydraulic pipeline; wherein the working oil port of the first link valve main valve is connected to the rotary motor; and the working oil port of the third link valve main valve is connected to the propulsion actuator.

[0016] Furthermore, the outlet of the flow valve is also connected to two pressure measuring ports which can be connected to sensors or pressure gauges.

[0017] As a second aspect of the present application, some embodiments of the present application provide a rock drilling rig, comprising the above-mentioned integrated control valve system.

[0018] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0019] 1. Through customized integrated valve groups, pipeline connections can be reduced, leakage risks can be reduced, and component layout space can be saved;

[0020] 2. Through the electric proportional pilot valve, the speed of the rotary motor and the propulsion actuator can be adjusted and controlled in multiple levels to adapt to the rotation speed of different drill bits and the propulsion speed under different working conditions;

[0021] 3. The electric proportional relief valve can be used to control the pressure of the propulsion actuator in multiple levels. Combined with the control algorithm, real-time adjustment of the pressure of the propulsion actuator during rock drilling can be achieved.

[0022] 4. Through the electric proportional flow valve, switching control of various impact states can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0024] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0025] Figure 1 is a schematic diagram of a hydraulic oil circuit of an integrated control valve system according to an embodiment of the present application;

[0026] Figure 2 is a schematic diagram of the mechanism of an integrated control valve system according to an embodiment of the present application;

[0027] Explanation of the symbols in the schematic diagram:

[0028] 100. Inlet joint valve;

[0029] 200, first link valve; 210, first pilot valve of the first link valve; 220, second pilot valve of the first link valve; 230, main valve of the first link valve;

[0030] 300, second valve block; 310, first one-way valve; 320, first overflow valve; 330, flow valve; 340, second one-way valve; 350, second overflow valve; 360, damping hole;

[0031] 400, the third joint valve; 410, the first pilot valve of the third joint valve; 420, the second pilot valve of the third joint valve; 430, the main valve of the third joint valve;

[0032] 500, first hydraulic pump;

[0033] 600, second hydraulic pump;

[0034] 700, third hydraulic pump;

[0035] 800, fuel tank;

[0036] 900, valve group;

[0037] 1000, rotating motor;

[0038] 1100, impact hammer;

[0039] 1200, promote the executive agency;

[0040] 1300, Two-position directional control valve. DETAILED DESCRIPTION

[0041] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0042] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0043] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0044] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0045] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only used for illustrative purposes and are not used to limit the scope of these messages or information.

[0046] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0047] like Figure 1 to Figure 2 As shown, an embodiment of the present application provides an integrated control valve system, which includes a first link valve 200, a third link valve 400 and a second link valve block 300 arranged between the first link valve 200 and the third link valve 400; wherein, the first link valve 200 is connected to the rotary motor 1000 through a hydraulic pipeline; the second link valve block 300 is connected to the impact hammer 1100 and the reversing valve 1300 through a hydraulic pipeline; the third link valve 400 is connected to the propulsion actuator 1200 through a hydraulic pipeline. An inlet link valve 100 is also provided on one side of the first link valve 200. The inlet link valve 100, the first link valve 200, the second link valve block 300 and the third link valve 400 together constitute the integrated control valve system. The oil return channels of the inlet link valve 100, the first link valve 200, the second link valve block 300 and the third link valve 400 are all interconnected and connected to the oil tank 800 through the T1 port on the inlet link valve 100 or the T2 port on the third link valve 400.

[0048] Specifically, an integrated control valve system of the present application is suitable for a rock drilling rig, which can greatly reduce the number of hydraulic valve components and centrally arrange the various hydraulic components. It can cooperate with control devices such as PLC to conveniently and quickly adjust the parameters of the rock drilling system. That is, the operator sends a control signal to the PLC, and the PLC performs calculations or judgments after receiving the control signal, and then sends a control signal to the proportional solenoid valves in the first link valve 200 and the third link valve 400 to adjust the various parameters of the rock drilling system.

[0049] More specifically, the inlet valve 100, the first valve 200 and the third valve 400 are multi-way valve plates. The second valve block 300 is a customized plug-in valve group. The second valve block 300 is connected between the first valve 200 and the third valve 400. The integrated control valve system also includes a first hydraulic pump 500, a second hydraulic pump 600 and a third hydraulic pump 700, wherein the oil inlet of the inlet valve 100 is connected to the oil outlet of the first hydraulic pump 500; the oil inlet of the second valve block 300 is connected to the oil outlet of the second hydraulic pump 600; and the oil inlet of the third valve 400 is connected to the third hydraulic pump 700.

[0050] Specifically, the oil inlet P1 of the inlet valve block 100 is connected to the first hydraulic pump 500. The oil inlet P of the second valve block 300 is connected to the second hydraulic pump 600. The oil inlet P2 of the third valve block 400 is connected to the third hydraulic pump 700 through the valve group 900. The first hydraulic pump 500 and the second hydraulic pump 600 are both driven by a motor, and the third hydraulic pump 700 is driven by an engine. The first hydraulic pump 500 is a fixed displacement pump; the second hydraulic pump 600 is a variable displacement pump. The third hydraulic pump 700 can be a fixed displacement pump or a variable displacement pump.

[0051] In an practicable specific solution, the first link valve 200 comprises a first link valve first pilot valve 210, a first link valve second pilot valve 220 and a first link valve main valve 230, wherein the first link valve first pilot valve 210 and the first link valve second pilot valve 220 are connected to the pilot oil source port, and the oil return ports of the first link valve first pilot valve 210 and the first link valve second pilot valve 220 are connected to the pilot oil return port; the oil outlets of the first link valve first pilot valve 210 and the first link valve second pilot valve 220 are respectively connected to the hydraulic control port of the first link valve main valve 230, and the working oil port of the first link valve main valve 230 is connected to the rotary motor 1000. The first link valve first pilot valve 210 and the first link valve second pilot valve 220 are both proportional solenoid valves.

[0052] Specifically, the oil inlets of the first link valve first pilot valve 210 and the first link valve second pilot valve 220 are connected to the pilot oil source port PS, the oil return ports of the first link valve first pilot valve 210 and the first link valve second pilot valve 220 are connected to the pilot return oil port TP, and the working oil port of the first link valve 200 is connected to the rotary motor 1000.

[0053] The third flap valve 400 comprises a third flap valve first pilot valve 410, a third flap valve second pilot valve 420 and a third flap valve main valve 430, wherein the third flap valve first pilot valve 410 and the third flap valve second pilot valve 420 are connected to the pilot oil source port, and the oil return ports of the third flap valve first pilot valve 410 and the third flap valve second pilot valve 420 are connected to the pilot oil return port; the oil outlets of the third flap valve first pilot valve 410 and the third flap valve second pilot valve 420 are respectively connected to the hydraulic control port of the third flap valve main valve 430, and the working oil port of the third flap valve main valve 430 is connected to the propulsion actuator 1200. The third flap valve first pilot valve 410 and the third flap valve second pilot valve 420 are both proportional solenoid valves, wherein the propulsion actuator 1200 can be a cylinder or a motor.

[0054] Specifically, the oil inlets of the first pilot valve 410 of the third linked valve and the second pilot valve 420 of the third linked valve are connected to the pilot oil source port PS, the oil return ports of the first pilot valve 410 of the third linked valve and the second pilot valve 420 of the third linked valve are connected to the pilot return oil port TP, the oil outlets of the first pilot valve 410 of the third linked valve and the second pilot valve 420 of the third linked valve are respectively connected to the hydraulic control ports of the third linked valve main valve 430, and the working oil port of the third linked valve 400 is connected to the propulsion actuator 1200.

[0055] In an implementable scheme, the second valve block 300 includes a first one-way valve 310, a first overflow valve 320, a flow valve 330, a second one-way valve 340, a second overflow valve 350 and a damping hole 360, the oil inlet of the first overflow port is connected to the oil outlet of the second hydraulic pump 600, the oil inlet of the flow valve 330 is connected to the oil outlet of the first hydraulic pump 500, the oil inlet of the first one-way valve 310 is connected to the oil outlet of the first overflow valve 320, the oil outlet of the first one-way valve 310 is connected to the oil inlet of the first overflow valve 320, and the oil outlet of the second one-way valve 340 is connected to the oil inlet of the third link valve 400; wherein the flow valve 330 and the second overflow valve 350 are both proportional solenoid valves.

[0056] Specifically, the oil inlet P of the second valve block 300 is connected to the outlet of the first check valve 310, the inlet of the first relief valve 320, the inlet of the flow valve 330, and the inlet of the second check valve 340. At the same time, the inlet of the first check valve 310 and the outlet of the first relief valve 320 are connected to the oil return channel of the second valve block 300. The outlet of the flow valve 330 is connected to the impact hammer 1100 through the oil port of the second valve block 300, and the other oil port of the second valve block 300 is connected to the reversing valve 1300, that is, the outlet of the flow valve 330 is connected to the impact hammer 1100 through the oil port HP of the second valve block 300.

[0057] In a specific embodiment, the outlet of the second check valve 340 is connected to the oil inlet P2 of the third link valve 400, the damping hole 360 ​​is connected between the LS7 oil channel and the oil return channel of the second link valve block 300, the LS7 oil port of the second link valve block 300 is connected to the two-position reversing valve 1300, and the LS7 oil channel is also connected to two pressure measuring ports GLS1 and GLS2, which can be used to connect a sensor or a pressure gauge. The inlet of the second relief valve 350 is connected to the working port signal oil channel of the third link valve 400. The inlet of the second relief valve 350 is also connected to two pressure measuring ports GF1 and GF2, which can be used to connect a sensor or a pressure gauge. The outlet of the second relief valve 350 is connected to the pilot oil return port TP of the third link valve 400.

[0058] In a specific embodiment, the rotary motor 1000 is driven by the first hydraulic pump 500 and controlled by the inlet link valve 100 and the first link valve 200. The inlet link valve 100 realizes low-pressure unloading and high-pressure overflow of the first hydraulic pump 500, which plays a role in energy saving and safety protection. The operator sends instructions to a control device such as a PLC, and then the PLC sends a control signal to the first pilot valve 210 of the first link valve and the second pilot valve 220 of the first link valve, and adjusts the current value of the first pilot valve 210 of the first link valve and the second pilot valve 220 of the first link valve, so as to adjust the speed of the rotary motor 1000 and control the rotation direction of the rotary motor 1000 through the first link valve main valve 230.

[0059] The impact hammer 1100 is driven by the second hydraulic pump 600. The first overflow valve 320 plays a safety protection role. By adjusting the current value of the flow valve 330, the switching between stop impact, high pressure impact and low pressure impact can be realized. The second check valve 340 realizes that the propulsion actuator 1200 can be driven by the second hydraulic pump 600 or the third hydraulic pump 700. The impact hammer 1100 can only be driven by the second hydraulic pump 600.

[0060] Similarly, the operator can adjust the speed of the propulsion actuator 1200 by sending instructions to a control device such as a PLC, and then the PLC sends a control signal to the first pilot valve 410 of the third interleaf valve and the second pilot valve 420 of the third interleaf valve, and adjusting the current value of the first pilot valve 410 of the third interleaf valve and the second pilot valve 420 of the third interleaf valve. The direction of the propulsion actuator 1200 is controlled by the third interleaf valve main valve 430. The pressure of the propulsion actuator 1200 is limited by the second relief valve 350. By adjusting the current value of the second relief valve 350, the upper limit of the pressure of the propulsion actuator 1200 under different working conditions can be adjusted. The damping hole 360 ​​realizes the delayed pressure relief after the two-position reversing valve 1300 is switched. The damping hole 360 ​​is an auxiliary function integrated on the second interleaf valve block 300, but is not limited thereto. The second interleaf valve block 300 can also expand the plug-in valve core integrating other auxiliary functions.

[0061] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. An integrated control valve system, characterized in that: The integrated control valve system comprises: A first connecting valve, a third connecting valve, and a second connecting valve block disposed between the first connecting valve and the third connecting valve; An inlet link valve is also provided on one side of the first link valve. The inlet link valve, the first link valve, the second link valve block and the third link valve together constitute the integrated control valve system. The return oil channels of the inlet link valve, the first link valve, the second link valve block and the third link valve are all connected.

2. The integrated control valve system according to claim 1, characterized in that: The integrated control valve system also includes a first hydraulic pump, a second hydraulic pump and a third hydraulic pump, wherein the oil inlet of the inlet link valve is connected to the oil outlet of the first hydraulic pump; the oil inlet of the second link valve block is connected to the oil outlet of the second hydraulic pump; and the oil inlet of the third link valve is connected to the third hydraulic pump.

3. The integrated control valve system according to claim 1 or 2, characterized in that: The first link valve comprises a first link valve first pilot valve, a first link valve second pilot valve and a first link valve main valve, wherein the first link valve first pilot valve and the first link valve second pilot valve are connected to a pilot oil source port, and the oil return ports of the first link valve first pilot valve and the first link valve second pilot valve are connected to a pilot oil return port; the oil outlets of the first link valve first pilot valve and the first link valve second pilot valve are respectively connected to the hydraulic control port of the first link valve main valve.

4. The integrated control valve system according to claim 3, characterized in that: The first pilot valve of the first link valve and the second pilot valve of the first link valve are both proportional solenoid valves.

5. The integrated control valve system according to claim 1 or 2, characterized in that: The third linked valve comprises a third linked valve first pilot valve, a third linked valve second pilot valve and a third linked valve main valve, wherein the third linked valve first pilot valve and the third linked valve second pilot valve are connected to a pilot oil source port, and the oil return ports of the third linked valve first pilot valve and the third linked valve second pilot valve are connected to a pilot oil return port; the oil outlets of the third linked valve first pilot valve and the third linked valve second pilot valve are respectively connected to the hydraulic control port of the third linked valve main valve.

6. The integrated control valve system according to claim 5, characterized in that: The first pilot valve of the third link valve and the second pilot valve of the third link valve are both proportional solenoid valves.

7. The integrated control valve system according to claim 1, characterized in that: The second valve block comprises a first one-way valve, a first relief valve, a flow valve, a second one-way valve, a second relief valve and a damping hole, the oil inlet of the first relief port is connected to the oil outlet of the second hydraulic pump, the oil inlet of the flow valve is connected to the oil outlet of the first hydraulic pump, the oil inlet of the first one-way valve is connected to the oil outlet of the first relief valve, the oil outlet of the first one-way valve is connected to the oil inlet of the first relief valve, and the oil outlet of the second one-way valve is connected to the oil inlet of the third valve; Wherein, the flow valve and the second overflow valve are both proportional solenoid valves.

8. The integrated control valve system according to claim 7, characterized in that: The outlet of the flow valve is connected to the impact hammer through the oil port of the second valve block, and the other oil port of the second valve block is connected to the reversing valve.

9. The integrated control valve system according to claim 7, characterized in that: The integrated control valve system further includes a rotary motor, an impact hammer and a propulsion actuator, the first connecting valve is connected to the rotary motor through a hydraulic pipeline, the second connecting valve block is connected to the impact hammer and the reversing valve through a hydraulic pipeline, and the third connecting valve is connected to the propulsion actuator through a hydraulic pipeline; in, The working oil port of the main valve of the first link valve is connected to the rotary motor; The working oil port of the third link valve main valve is communicated with the propulsion actuator.

10. The integrated control valve system according to claim 9, characterized in that: The outlet of the flow valve is also connected to two pressure measuring ports which can be connected to sensors or pressure gauges.

11. A rock drilling rig, characterized in that: Comprising the integrated control valve system according to any one of claims 1 to 10.

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