Electro-hydraulic control system, control method and double-rock-drilling-anchor-rod trolley

Abstract

The invention relates to the technical field of engineering vehicles, and particularly discloses an electro-hydraulic control system, a control method and a double-rock-drilling-anchor-rod trolley. The electro-hydraulic control system comprises a hydraulic pump, an electric control valve set and a controller; an oil inlet of the electric control valve group is connected with the hydraulic pump and is provided with a first oil outlet connected with a first rock drill and a second oil outlet connected with a second rock drill; the hydraulic pump drives hydraulic oil to enter the first rock drill from the first oil outlet, so that the first rock drill works; or, the electric control valve group drives the hydraulic oil to enter the second rock drill from the second oil outlet, so that the second rock drill works; the first oil outlet and the second oil outlet are connected with a pressure detection module electrically connected with the controller. The hydraulic system is convenient to operate by workers, and the manufacturing cost of the hydraulic system is effectively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of engineering vehicles, and in particular to an electro-hydraulic control system, a control method and a double rock drilling and anchoring trolley. Background Art

[0002] The anchor trolley is a key equipment in the anchor support construction. At present, in the anchor support construction, the anchor trolley is a propulsion beam on which the first rock drill and the second rock drill are installed at the same time. The two do not work at the same time. When working, the switching function is used to make one rock drill drill holes and the other rock drill install anchors. However, due to the dual rock drill impact electro-hydraulic control system of the existing anchor trolley, the rock drill impact control system it is equipped with is two sets of impact control systems, which increases the cost of the hydraulic system of the entire anchor trolley, which is not conducive to the promotion of support mechanization. At the same time, the two systems have many hydraulic components and occupy a large space, which is not conducive to the layout of hydraulic pipelines and the lightweight design of the anchor trolley. In addition, due to the complex structure of the two sets of electro-hydraulic control systems, there are many operating levers on the operating table, which is complicated to operate, greatly reducing the construction efficiency. Summary of the invention

[0003] The purpose of the present application is to provide an electro-hydraulic control system, a control method and a double rock drilling bolt trolley, which optimize the electro-hydraulic control system to facilitate operation by staff and effectively reduce the manufacturing cost of the hydraulic system.

[0004] The embodiment of the present application is implemented as follows:

[0005] On the one hand, an embodiment of the present application provides an electro-hydraulic control system, including a hydraulic pump, an electrically controlled valve group, and a controller; the oil inlet of the electrically controlled valve group is connected to the hydraulic pump and has a first oil outlet connected to a first rock drill and a second oil outlet connected to a second rock drill; the hydraulic pump drives the hydraulic oil from the first oil outlet to enter the first rock drill to make the first rock drill work; or, the electrically controlled valve group drives the hydraulic oil from the second oil outlet to enter the second rock drill to make the second rock drill work; the first oil outlet and the second oil outlet are connected to a pressure detection module electrically connected to the controller.

[0006] As an optional embodiment, it includes a hydraulic oil tank for providing hydraulic oil to the hydraulic pump; the electrically controlled valve group includes a main overflow valve and an electrically controlled reversing valve; the oil inlet of the main overflow valve is connected to the oil outlet of the hydraulic pump, the oil outlet is connected to the electrically controlled reversing valve, and the overflow port is connected to the hydraulic oil tank.

[0007] As an optional embodiment, the electrically controlled valve group also includes a first auxiliary overflow valve and a second auxiliary overflow valve; the inlet end of the first auxiliary overflow valve is connected to the first outlet on the electrically controlled reversing valve, and the outlet end is connected to the first oil outlet; the inlet end of the second auxiliary overflow valve is connected to the second outlet on the electrically controlled reversing valve, and the outlet end is connected to the second oil outlet; the overflow ports of the first auxiliary overflow valve and the second auxiliary overflow valve are both connected to the hydraulic oil tank.

[0008] As an optional implementation, the hydraulic pump is connected to an electromagnetic regulating valve, and the electromagnetic regulating valve is used to adjust the oil output of the hydraulic pump.

[0009] As an optional implementation, the first oil outlet is connected to the first rock drill via a first pipeline; the second oil outlet is connected to the second rock drill via a second pipeline; and the pressure detection module is installed on the first pipeline and the second pipeline.

[0010] On the other hand, an embodiment of the present application provides a hydraulic control method, which is applied to the above-mentioned electro-hydraulic control system, including:

[0011] Driving the hydraulic pump to work, so that the hydraulic oil passes through the hydraulic pump and enters the electronically controlled valve group;

[0012] The electronically controlled valve group is driven to allow the hydraulic oil to enter the first rock drill from the first oil outlet, and the first rock drill is hydraulically driven to perform drilling construction; or, the electronically controlled valve group is driven to allow the hydraulic oil to enter the second rock drill from the second oil outlet, and the second rock drill is hydraulically driven to perform anchor construction.

[0013] Further, the driving of the electric control valve group so that the hydraulic oil enters the first rock drill from the first oil outlet, and the first rock drill is hydraulically driven to perform drilling construction; or the driving of the electric control valve group so that the hydraulic oil enters the second rock drill from the second oil outlet, and the second rock drill is hydraulically driven to perform anchor construction, further includes:

[0014] The detected oil pressure of the first pipeline or the second pipeline is detected by the pressure detection module, and the detected oil pressure is compared with the preset pressure; when the detected oil pressure is greater than the preset pressure, the oil output of the hydraulic pump is reduced by the electromagnetic regulating valve to realize the working pressure control of the first rock drill or the second rock drill.

[0015] Further, the driving of the electric control valve group so that the hydraulic oil enters the first rock drill from the first oil outlet, and the first rock drill is hydraulically driven to perform drilling construction; or the driving of the electric control valve group so that the hydraulic oil enters the second rock drill from the second oil outlet, and the second rock drill is hydraulically driven to perform anchor construction, further includes:

[0016] When the working oil pressure of the first rock drill is greater than the overflow setting pressure of the first auxiliary overflow valve, the hydraulic oil enters the hydraulic oil tank through the overflow port of the first auxiliary overflow valve; or, when the working oil pressure of the second rock drill is greater than the overflow setting pressure of the second auxiliary overflow valve, the hydraulic oil enters the hydraulic oil tank through the overflow port of the second auxiliary overflow valve.

[0017] Further, the driving of the electric control valve group so that the hydraulic oil enters the first rock drill from the first oil outlet, and the first rock drill is hydraulically driven to perform drilling construction; or the driving of the electric control valve group so that the hydraulic oil enters the second rock drill from the second oil outlet, and the second rock drill is hydraulically driven to perform anchor construction, further includes:

[0018] When the working oil pressure of the first rock drill exceeds the overflow setting pressure of the main overflow valve, the hydraulic oil enters the hydraulic oil tank through the overflow port of the main overflow valve; the overflow setting pressure of the main overflow valve is greater than the overflow setting pressure of the first auxiliary overflow valve;

[0019] Or, when the working oil pressure of the second rock drill exceeds the overflow setting pressure of the main overflow valve, the hydraulic oil enters the hydraulic oil tank through the overflow port of the main overflow valve; the overflow setting pressure of the main overflow valve is greater than the overflow setting pressure of the second auxiliary overflow valve.

[0020] On the other hand, an embodiment of the present application provides a double rock drilling and anchoring trolley, including a propulsion beam, the above-mentioned electro-hydraulic control system, and a first rock drill for drilling operations and a second rock drill for anchoring operations arranged on the propulsion beam; the first rock drill or the second rock drill is controlled by the electro-hydraulic control system.

[0021] The beneficial effects of the embodiments of the present application include:

[0022] In the first aspect, the electro-hydraulic control system provided by the embodiment of the present application includes a hydraulic pump, an electric control valve group and a controller; the oil inlet of the electric control valve group of the embodiment of the present application is connected to the hydraulic pump and has a first oil outlet connected to the first rock drill and a second oil outlet connected to the second rock drill; the hydraulic pump drives the hydraulic oil from the first oil outlet to enter the first rock drill to make the first rock drill work; or, the electric control valve group drives the hydraulic oil from the second oil outlet to enter the second rock drill to make the second rock drill work; the first oil outlet and the second oil outlet are connected to a pressure detection module electrically connected to the controller. The electro-hydraulic control system provided by the embodiment of the present application combines the electric control method, and realizes the hydraulic control of the first rock drill and the second rock drill through a set of structures, avoiding the setting of two sets of hydraulic control systems. Compared with the prior art, the embodiment of the present application has the advantages of simple system and convenient operation, which not only reduces the structural volume and facilitates the structural layout, but also helps to achieve the lightweight design goal.

[0023] On the second aspect, the hydraulic control method provided in the embodiment of the present application is applied to the above-mentioned electro-hydraulic control system, including: driving the hydraulic pump to work, so that the hydraulic oil in the hydraulic oil tank flows to the electronically controlled reversing valve through the hydraulic pump; driving the electronically controlled reversing valve to allow the hydraulic oil to enter the first rock drill from the first oil outlet, and realize the hydraulic drive of the first rock drill to perform drilling work; or, driving the electronically controlled reversing valve to allow the hydraulic oil to enter the second rock drill from the second oil outlet, and realize the hydraulic drive of the second rock drill to perform anchor work. Compared with the prior art, the control method provided in the embodiment of the present application enables the anchor trolley to accurately control different rock drills, and can simplify the operation, which is convenient for the staff to operate, and is therefore conducive to improving construction efficiency.

[0024] On the third aspect, the embodiment of the present application also provides a double rock drilling and anchoring trolley, including a propulsion beam, the above-mentioned electro-hydraulic control system, and a first rock drill and a second rock drill arranged on the propulsion beam; the first rock drill or the second rock drill is controlled by the electro-hydraulic control system. Compared with the prior art, the double rock drilling and anchoring trolley provided in the embodiment of the present application adopts the above-mentioned electro-hydraulic control system, which can accurately control the first rock drill and the second rock drill, realize drilling operations and anchoring operations, and facilitate the operation of the staff. In addition, since the electro-hydraulic control system optimizes the structure, its volume is greatly reduced, which is not only convenient for the layout of hydraulic pipelines, but also conducive to the lightweight of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic diagram of the structure of the electro-hydraulic control system of an embodiment of the present application;

[0027] Figure 2 It is a flowchart of the control method of the embodiment of the present application.

[0028] icon:

[0029] 100-hydraulic pump; 101-hydraulic oil tank; 102-electrically controlled reversing valve; 103-controller; 104-first rock drill; 105-first oil outlet; 106-second rock drill; 107-second oil outlet; 108-electromagnetic regulating valve; 109-first pipeline; 110-second pipeline; 111-pressure detection module; 112-main overflow valve; 113-first auxiliary overflow valve; 114-second auxiliary overflow valve; 115-first operating button; 116-second operating button; 117-third operating button; 118-display screen; 119-electrically controlled valve group. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0032] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0033] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] The anchor trolley is a key equipment in the anchor support construction. At present, in the anchor support construction, the anchor trolley is a propulsion beam on which the first rock drill 104 and the second rock drill 106 are installed at the same time. The two do not work at the same time. When working, the switching function is used to make one rock drill drill holes and the other rock drill install anchors. However, due to the dual rock drill impact electro-hydraulic control system of the existing anchor trolley, the rock drill impact control system it is equipped with is two sets of impact control systems, which increases the cost of the hydraulic system of the entire anchor trolley, which is not conducive to the promotion of support mechanization. At the same time, the two systems have many hydraulic components and occupy a large space, which is not conducive to the layout of hydraulic pipelines and is not convenient for the lightweight design of the anchor trolley. In addition, due to the complex structure of the two sets of electro-hydraulic control systems, there are many operating levers on the operating table, which is complicated to operate, greatly reducing the construction efficiency.

[0035] In order to solve the above technical problems, the embodiments of the present application provide an electro-hydraulic control system, a control method and a double rock drilling and bolting trolley.

[0036] Reference Figure 1 As shown, an embodiment of the present application provides an electro-hydraulic control system, including a hydraulic pump 100, an electric-controlled valve group 119 and a controller 103; the oil inlet of the electric-controlled valve group 119 is connected to the hydraulic pump 100 and has a first oil outlet 105 connected to the first rock drill 104 and a second oil outlet 107 connected to the second rock drill 106; the hydraulic pump 100 drives the hydraulic oil from the first oil outlet 105 to enter the first rock drill 104, so that the first rock drill 104 works; or, the electric-controlled valve group 119 drives the hydraulic oil from the second oil outlet 107 to enter the second rock drill 106, so that the second rock drill 106 works; the first oil outlet 105 and the second oil outlet 107 are connected to a pressure detection module 111 electrically connected to the controller 103.

[0037] It should be noted that the electro-hydraulic control system provided in the embodiment of the present application includes a hydraulic pump 100 , an electrically controlled valve group 119 , a controller 103 , a pressure detection module 111 and an electromagnetic regulating valve 108 .

[0038] The hydraulic pump 100 and the electric control valve group 119 are both electrically connected to the controller 103, and the controller 103 also includes a display screen 118 and operation buttons, or a touch screen 118. As for the specific type of the controller 103, those skilled in the art can select it according to their needs, and there is no special limitation on this.

[0039] The hydraulic pump 100 of the embodiment of the present application is connected to an electromagnetic regulating valve 108 , and the electromagnetic regulating valve 108 is used to adjust the oil output of the hydraulic pump 100 .

[0040] The first oil outlet 105 of the embodiment of the present application is connected to the first rock drill 104 via a first pipeline 109 ; the second oil outlet 107 is connected to the second rock drill 106 via a second pipeline 110 ; and the pressure detection module 111 is installed on the first pipeline 109 and the second pipeline 110 .

[0041] It should be noted that the pressure detection module 111 can detect the oil pressure values ​​in the first pipeline 109 and the second pipeline 110, and display the specific values ​​through the display screen 118. According to the size of the oil pressure value, the staff can control the solenoid valve through the controller 103 to adjust the oil output and realize the control of the pipeline oil pressure. In addition, the staff can also set the target pressure value in the controller 103 and realize the pressure setting through the program. The controller 103 can compare the detected oil pressure with the preset pressure in real time. Once the detected oil pressure exceeds the preset pressure, the solenoid valve is controlled to adjust the oil volume, so that the first rock drill 104 and the second rock drill 106 can maintain the preset pressure to work. It should be noted that the optimal construction oil pressure for different rock formation conditions can be set in the controller 103, so that the first rock drill 104 and the second rock drill 106 can realize adaptive pressure adjustment according to different rock formation conditions during work, reduce the difficulty of operation of the staff, and effectively improve the construction efficiency.

[0042] The electrically controlled valve group 119 of the embodiment of the present application includes an electrically controlled reversing valve 102 and a hydraulic oil tank 101 for providing hydraulic oil to the hydraulic pump 100 . The electrically controlled reversing valve 102 is used to control the hydraulic oil to flow out of the first oil outlet 105 or the second oil outlet 107 .

[0043] Reference Figure 1 As shown, exemplarily, there are three operation buttons on the display screen 118 of the controller 103, the first operation button can control the first rock drill 104 to work at a first preset pressure, and the second operation button can control the first rock drill 104 to work at a second preset pressure, wherein the first preset pressure is less than the second preset pressure.

[0044] Specifically, when the first operating button 115 is pressed, the controller 103 controls the hydraulic pump 100 connected to the hydraulic oil tank 101 to work, so that the hydraulic oil in the hydraulic oil tank 101 flows to the electronically controlled reversing valve 102 through the hydraulic pump 100, and the electronically controlled reversing valve 102 allows the hydraulic oil to enter the first rock drill 104 from the first oil outlet 105, so that the first rock drill 104 performs drilling work at a first preset pressure.

[0045] Specifically, when the second operating button 116 is pressed, the controller 103 controls the hydraulic pump 100 connected to the hydraulic oil tank 101 to work, so that the hydraulic oil in the hydraulic oil tank 101 flows to the electronically controlled reversing valve 102 through the hydraulic pump 100, and the electronically controlled reversing valve 102 allows the hydraulic oil to enter the first rock drill 104 from the first oil outlet 105, so that the first rock drill 104 performs drilling work at a second preset pressure.

[0046] The third operating button can control the second rock drill 106 to work.

[0047] Specifically, when the third operating button 117 is pressed, the controller 103 controls the hydraulic pump 100 connected to the hydraulic oil tank 101 to work, so that the hydraulic oil in the hydraulic oil tank 101 flows through the hydraulic pump 100 to the electronically controlled reversing valve 102, and the electronically controlled reversing valve 102 allows the hydraulic oil to enter the second rock drill 106 from the second oil outlet 107, so that the second rock drill 106 can perform anchoring work.

[0048] It should be noted that the number of operation buttons can be set by those skilled in the art as required, and there is no special limitation on this. In addition, touch operation can also be used for control.

[0049] It should be noted that the hydraulic pump 100 in the embodiment of the present application is driven by a motor, wherein the specific models of the hydraulic pump 100 and the motor can be selected by technicians in the field according to needs.

[0050] For the embodiment of the present application, the controller 103 controls the hydraulic pump 100 connected to the hydraulic oil tank 101 to work, so that the hydraulic oil in the hydraulic oil tank 101 flows through the hydraulic pump 100 to the electrically controlled reversing valve 102 of the electrically controlled valve group 119, and the electrically controlled reversing valve 102 allows the hydraulic oil to enter the first rock drill 104 from the first oil outlet 105 to make the first rock drill 104 work; or, the electrically controlled reversing valve 102 allows the hydraulic oil to enter the second rock drill 106 from the second oil outlet 107 to make the second rock drill 106 work.

[0051] It should be noted that when the controller 103 does not output a signal, the blocking structure in the electric-controlled reversing valve 102 stops in the middle, that is, no hydraulic oil flows into the first oil outlet 105 and the second oil outlet 107. At this time, the first rock drill 104 and the second rock drill 106 are both in a shutdown state.

[0052] The electro-hydraulic control system provided in the embodiment of the present application combines the electric control method, and realizes the hydraulic control of the first rock drill 104 and the second rock drill 106 through a set of structures, avoiding the need to set up two sets of hydraulic control systems. Compared with the prior art, the embodiment of the present application has the advantages of simple system and convenient operation, which not only reduces the structural volume and facilitates the structural layout, but also helps to achieve the goal of lightweight design.

[0053] Reference Figure 1 As shown, the electrically controlled valve group 119 includes a main overflow valve 112 and an electrically controlled reversing valve 102 ; the oil inlet of the main overflow valve 112 is connected to the oil outlet of the hydraulic pump 100 , the oil outlet is connected to the electrically controlled reversing valve 102 , and the overflow port is connected to the hydraulic oil tank 101 .

[0054] Furthermore, the embodiment of the present application provides mechanical protection for the entire system oil circuit by setting a main overflow valve 112. The main overflow valve 112 is used to control the system oil pressure at a preset pressure, that is, the overflow setting pressure of the main overflow valve 112, when the pressure detection module 111 fails and the electric control signal fails, and the electromagnetic regulating valve 108 cannot be accurately adjusted. The preset pressure is achieved through the mechanical structure of the main overflow valve 112. When the system pipeline oil pressure reaches the preset pressure, the main overflow valve 112 overflows and releases the pressure, so that the excess hydraulic oil flows back to the hydraulic oil tank 101 instead of entering the first rock drill 104 or the second rock drill 106. Therefore, the upper limit of the working oil pressure of the first rock drill 104 and the second rock drill 106 can be controlled.

[0055] Reference Figure 1 As shown, as an optional embodiment, the electric control valve group 119 also includes a first auxiliary relief valve 113 and a second auxiliary relief valve 114; the inlet end of the first auxiliary relief valve 113 is connected to the first outlet on the electric control reversing valve 102, and the outlet end is connected to the first oil outlet 105; the inlet end of the second auxiliary relief valve 114 is connected to the second outlet on the electric control reversing valve 102, and the outlet end is connected to the second oil outlet 107; the overflow ports of the first auxiliary relief valve 113 and the second auxiliary relief valve 114 are both connected to the hydraulic oil tank 101.

[0056] Furthermore, the embodiment of the present application provides overflow protection for the first rock drill 104 and the second rock drill 106 respectively through the first auxiliary relief valve 113 and the second auxiliary relief valve 114. In the case of electronic control failure, the first auxiliary relief valve 113 has a first overflow setting pressure, which can specifically provide preset pressure protection for the first rock drill 104, and the second auxiliary relief valve 114 has a second overflow setting pressure, which can specifically provide preset pressure protection for the second rock drill 106.

[0057] It should be noted that the preset pressure of the main relief valve 112 is greater than the preset pressures of the first secondary relief valve 113 and the second secondary relief valve 114. As for the preset pressures of the first secondary relief valve 113 and the second secondary relief valve 114, those skilled in the art can set them as needed.

[0058] Reference Figure 2 As shown, the embodiment of the present application provides a hydraulic control method, which is applied to the above-mentioned electro-hydraulic control system, including:

[0059] S100, driving the hydraulic pump 100 to work, so that the hydraulic oil passes through the hydraulic pump 100 and enters the electric control valve group 119;

[0060] S200, drive the electric control valve group 119 to allow the hydraulic oil to enter the first rock drill 104 from the first oil outlet 105, and hydraulically drive the first rock drill 104 to perform drilling construction; or drive the electric control valve group 119 to allow the hydraulic oil to enter the second rock drill 106 from the second oil outlet 107, and hydraulically drive the second rock drill 106 to perform anchor construction.

[0061] Further, the electric control valve group 119 is driven to allow the hydraulic oil to enter the first rock drill 104 from the first oil outlet 105, and the first rock drill 104 is hydraulically driven to perform drilling construction; or the electric control valve group 119 is driven to allow the hydraulic oil to enter the second rock drill 106 from the second oil outlet 107, and the second rock drill 106 is hydraulically driven to perform bolt construction, and further includes:

[0062] The detected oil pressure of the first pipeline 109 or the second pipeline 110 is detected by the pressure detection module 111, and the detected oil pressure is compared with the preset pressure; when the detected oil pressure is greater than the preset pressure, the oil output of the hydraulic pump 100 is reduced by the electromagnetic regulating valve 108 to achieve working pressure control of the first rock drill 104 or the second rock drill 106.

[0063] Further, the electric control valve group 119 is driven to allow the hydraulic oil to enter the first rock drill 104 from the first oil outlet 105, and the first rock drill 104 is hydraulically driven to perform drilling construction; or the electric control valve group 119 is driven to allow the hydraulic oil to enter the second rock drill 106 from the second oil outlet 107, and the second rock drill 106 is hydraulically driven to perform bolt construction, and further includes:

[0064] When the working oil pressure of the first rock drill 104 is greater than the overflow setting pressure of the first auxiliary overflow valve 113, the hydraulic oil enters the hydraulic oil tank 101 through the overflow port of the first auxiliary overflow valve 113; or, when the working oil pressure of the second rock drill 106 is greater than the overflow setting pressure of the second auxiliary overflow valve 114, the hydraulic oil enters the hydraulic oil tank 101 through the overflow port of the second auxiliary overflow valve 114.

[0065] Further, the electric control valve group 119 is driven to allow the hydraulic oil to enter the first rock drill 104 from the first oil outlet 105, and the first rock drill 104 is hydraulically driven to perform drilling construction; or the electric control valve group 119 is driven to allow the hydraulic oil to enter the second rock drill 106 from the second oil outlet 107, and the second rock drill 106 is hydraulically driven to perform bolt construction, and further includes:

[0066] When the working oil pressure of the first rock drill 104 exceeds the overflow setting pressure of the main overflow valve 112, the hydraulic oil enters the hydraulic oil tank 101 through the overflow port of the main overflow valve 112; the overflow setting pressure of the main overflow valve 112 is greater than the overflow setting pressure of the first auxiliary overflow valve 113;

[0067] Or, when the working oil pressure of the second rock drill 106 exceeds the overflow setting pressure of the main overflow valve 112, the hydraulic oil enters the hydraulic oil tank 101 through the overflow port of the main overflow valve 112; the overflow setting pressure of the main overflow valve 112 is greater than the overflow setting pressure of the second auxiliary overflow valve 114.

[0068] In addition, an embodiment of the present application provides a double rock drilling and anchoring trolley, including a propulsion beam, the above-mentioned electro-hydraulic control system, and a first rock drill 104 for drilling operations and a second rock drill 106 for anchoring operations arranged on the propulsion beam; the first rock drill 104 or the second rock drill 106 is controlled by the electro-hydraulic control system.

[0069] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electro-hydraulic control system, characterized in that: It includes a hydraulic pump, an electric control valve group and a controller; the oil inlet of the electric control valve group is connected to the hydraulic pump and has a first oil outlet connected to a first rock drill and a second oil outlet connected to a second rock drill; the hydraulic pump drives the hydraulic oil to enter the first rock drill from the first oil outlet to make the first rock drill work; or the electric control valve group drives the hydraulic oil to enter the second rock drill from the second oil outlet to make the second rock drill work; the first oil outlet and the second oil outlet are connected to a pressure detection module electrically connected to the controller.

2. The electro-hydraulic control system according to claim 1, characterized in that: It comprises a hydraulic oil tank for providing hydraulic oil to the hydraulic pump; the electrically controlled valve group comprises a main overflow valve and an electrically controlled reversing valve; the oil inlet of the main overflow valve is connected to the oil outlet of the hydraulic pump, the oil outlet is connected to the electrically controlled reversing valve, and the overflow port is connected to the hydraulic oil tank.

3. The electro-hydraulic control system according to claim 2, characterized in that: The electrically controlled valve group also includes a first auxiliary overflow valve and a second auxiliary overflow valve; the inlet end of the first auxiliary overflow valve is connected to the first outlet on the electrically controlled reversing valve, and the outlet end is connected to the first oil outlet; the inlet end of the second auxiliary overflow valve is connected to the second outlet on the electrically controlled reversing valve, and the outlet end is connected to the second oil outlet; the overflow ports of the first auxiliary overflow valve and the second auxiliary overflow valve are both connected to the hydraulic oil tank.

4. The electro-hydraulic control system according to claim 1, characterized in that: The hydraulic pump is connected with an electromagnetic regulating valve, and the electromagnetic regulating valve is used to adjust the oil output of the hydraulic pump.

5. The electro-hydraulic control system according to claim 1, characterized in that: The first oil outlet is communicated with the first rock drill through a first pipeline; the second oil outlet is communicated with the second rock drill through a second pipeline; and the pressure detection module is installed on the first pipeline and the second pipeline.

6. A hydraulic control method, applied to the electro-hydraulic control system according to any one of claims 1 to 5, characterized in that: include: Driving the hydraulic pump to work, so that the hydraulic oil passes through the hydraulic pump and enters the electronically controlled valve group; The electronically controlled valve group is driven to allow the hydraulic oil to enter the first rock drill from the first oil outlet, and the first rock drill is hydraulically driven to perform drilling construction; or, the electronically controlled valve group is driven to allow the hydraulic oil to enter the second rock drill from the second oil outlet, and the second rock drill is hydraulically driven to perform anchor construction.

7. The hydraulic control method according to claim 6, characterized in that: The method of driving the electric control valve group so that the hydraulic oil enters the first rock drill from the first oil outlet and hydraulically drives the first rock drill to perform drilling construction; or driving the electric control valve group so that the hydraulic oil enters the second rock drill from the second oil outlet and hydraulically drives the second rock drill to perform bolt construction, further includes: The detected oil pressure of the first pipeline or the second pipeline is detected by the pressure detection module, and the detected oil pressure is compared with the preset pressure; when the detected oil pressure is greater than the preset pressure, the oil output of the hydraulic pump is reduced by the electromagnetic regulating valve to realize the working pressure control of the first rock drill or the second rock drill.

8. The hydraulic control method according to claim 6, characterized in that: The method of driving the electric control valve group so that the hydraulic oil enters the first rock drill from the first oil outlet and hydraulically drives the first rock drill to perform drilling construction; or driving the electric control valve group so that the hydraulic oil enters the second rock drill from the second oil outlet and hydraulically drives the second rock drill to perform bolt construction, further includes: When the working oil pressure of the first rock drill is greater than the overflow setting pressure of the first auxiliary overflow valve, the hydraulic oil enters the hydraulic oil tank through the overflow port of the first auxiliary overflow valve; or, when the working oil pressure of the second rock drill is greater than the overflow setting pressure of the second auxiliary overflow valve, the hydraulic oil enters the hydraulic oil tank through the overflow port of the second auxiliary overflow valve.

9. The hydraulic control method according to claim 8, characterized in that: The method of driving the electric control valve group so that the hydraulic oil enters the first rock drill from the first oil outlet and hydraulically drives the first rock drill to perform drilling construction; or driving the electric control valve group so that the hydraulic oil enters the second rock drill from the second oil outlet and hydraulically drives the second rock drill to perform bolt construction, further includes: When the working oil pressure of the first rock drill exceeds the overflow setting pressure of the main overflow valve, the hydraulic oil enters the hydraulic oil tank through the overflow port of the main overflow valve; the overflow setting pressure of the main overflow valve is greater than the overflow setting pressure of the first auxiliary overflow valve; Or, when the working oil pressure of the second rock drill exceeds the overflow setting pressure of the main overflow valve, the hydraulic oil enters the hydraulic oil tank through the overflow port of the main overflow valve; the overflow setting pressure of the main overflow valve is greater than the overflow setting pressure of the second auxiliary overflow valve.

10. A double rock drilling and bolting trolley, characterized in that: It comprises a propulsion beam, an electro-hydraulic control system as claimed in any one of claims 1 to 5, and a first rock drill for drilling operations and a second rock drill for bolting operations arranged on the propulsion beam; the first rock drill or the second rock drill is controlled by the electro-hydraulic control system.

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