Electro-hydraulic control system for rock drilling equipment and double rock drill anchor trolley

Abstract

The present invention relates to the field of underground construction technology, and specifically to an electro-hydraulic control system for rock drilling equipment and a double rock drilling machine anchor trolley, the electro-hydraulic control system comprising: a hydraulic pump, provided with an oil suction port and an oil outlet, the oil suction port being connected to a hydraulic oil tank; an integrated valve group, provided with a plurality of reversing valve cores arranged in parallel; the oil inlets of all reversing valve cores being connected to the oil outlet, the first oil outlet of each reversing valve core being connected to the first end of the respective corresponding rock drilling machine, and the second oil outlet of each reversing valve core being connected to the second end of the respective corresponding rock drilling machine; and a controller being connected to all reversing valve cores in communication at the same time. Each reversing valve core can adjust the working state of the respective corresponding rock drilling machine, so that it can be realized through a set of hydraulic pipeline systems, simplifying the existing two or more sets of hydraulic systems, reducing the hydraulic components of the hydraulic system, saving the internal occupied space, and thus facilitating the layout of the hydraulic pipelines.

Description

Technical Field

[0001] The present invention relates to the technical field of underground construction, and in particular to an electro-hydraulic control system for rock drilling equipment and a double rock drill anchor trolley. Background Art

[0002] Currently, hydraulically controlled dual-rock drill anchor rigs are the primary method of anchor support construction. These rigs feature a single propulsion beam with both a drilling rig and an anchor drill mounted on it. The two rigs operate independently, but a switch allows the drilling rig to drill holes while the anchor drill installs the anchor bolts.

[0003] Since rock drilling and rock bolting have different functions and their rotary motor configurations are different, they are usually equipped with two or more separate hydraulic rotary operating systems. This results in the operating system having many hydraulic components, taking up a large space, being unfavorable for the layout of hydraulic pipelines, and having a high failure rate. Summary of the Invention

[0004] In view of this, the present invention provides an electro-hydraulic control system for rock drilling equipment and a double rock drill anchor trolley to solve the problem that the current double rock drills are equipped with two separate hydraulic rotary operating systems, resulting in multiple hydraulic components in the operating system.

[0005] In a first aspect, the present invention provides an electro-hydraulic control system for rock drilling equipment, the electro-hydraulic control system comprising:

[0006] A hydraulic pump is provided with an oil suction port and an oil discharge port, wherein the oil suction port is connected to the hydraulic oil tank;

[0007] An integrated valve group is provided with a plurality of reversing valve cores arranged in parallel;

[0008] The oil inlets of all the reversing valve cores are connected to the oil outlet, the first oil outlet of each reversing valve core is suitable for being connected to the first end of the respective rock drill, and the second oil outlet of each reversing valve core is suitable for being connected to the second end of the respective rock drill;

[0009] The controller is connected to all the reversing valve cores at the same time.

[0010] Beneficial effects: The embodiment of the present invention sets up a plurality of reversing valve cores arranged in parallel with each other, and controls the working state of each reversing valve core through a controller, so that each reversing valve core can adjust the working state of its corresponding rock drill. Therefore, it can be achieved through a set of hydraulic pipeline systems, and all functional requirements of existing rock drills can be met, thereby simplifying the existing two or more hydraulic systems, reducing the hydraulic components of the hydraulic system, saving internal space, thereby facilitating the layout of hydraulic pipelines, and improving the intelligence level of the equipment.

[0011] In an optional embodiment, the integrated valve group is provided with a first reversing valve core and a second reversing valve core; the first reversing valve core and the second reversing valve core are provided in parallel;

[0012] The first reversing valve core is correspondingly connected to the first rock drill; the second reversing valve core is correspondingly connected to the second rock drill.

[0013] In an optional embodiment, the integrated valve group further includes:

[0014] a first overflow valve, disposed between a first oil outlet of the first reversing valve core and a first end of the first rock drill;

[0015] a second relief valve, disposed between the second oil outlet of the first reversing valve core and the second end of the first rock drill;

[0016] The overflow port of the first overflow valve and the overflow port of the second overflow valve are at least connected to the hydraulic oil tank; the first overflow valve and the second overflow valve are both communicatively connected to the controller.

[0017] In an optional embodiment, the integrated valve group further includes:

[0018] a third relief valve, disposed between the first oil outlet of the second reversing valve core and the first end of the second rock drill;

[0019] a fourth overflow valve, disposed between the second oil outlet of the second reversing valve core and the first end of the second rock drill;

[0020] The overflow port of the third overflow valve and the overflow port of the fourth overflow valve are at least connected to the hydraulic oil tank; the third overflow valve and the fourth overflow valve are both communicatively connected to the controller.

[0021] In an optional embodiment, the integrated valve group further includes:

[0022] A main overflow valve is connected to the oil outlet of the hydraulic pump; the main overflow valve is used to set the rated pressure of the hydraulic oil in the electro-hydraulic control system; the overflow port of the main overflow valve is at least connected to the hydraulic oil tank;

[0023] The main relief valve is in communication with the controller.

[0024] In an optional embodiment, the integrated valve group further includes:

[0025] a flow valve, one end of which is connected to the oil outlet of the hydraulic pump, and the other end of which is connected to the hydraulic oil tank;

[0026] When both the first rock drill and the second rock drill are not started, the hydraulic pump, the flow valve, and the hydraulic oil tank form a standby circuit; the hydraulic oil flows back to the hydraulic oil tank after passing through the flow valve.

[0027] In an optional embodiment, the electro-hydraulic control system further includes:

[0028] An operating rocker is provided on the controller and is in communication with the controller; the operating rocker has a working position for adjusting the reversing of each reversing valve core and a pause position for preventing the reversing valve core from starting; when the operating rocker is in the pause position, all rock drills are not started.

[0029] In an optional embodiment, the electro-hydraulic control system further includes:

[0030] The pressure collection component is connected to all rock drills; the pressure collection component is used to collect the actual pressure value of the rock drill.

[0031] In an optional embodiment, the pressure collection component is communicatively connected to the controller; when the actual pressure value of one of the rock drills is greater than a preset pressure value, the controller controls the reversing valve core corresponding to the rock drill to reduce the flow output.

[0032] In a second aspect, the present invention provides a double rock drill anchor trolley, which includes: an electro-hydraulic control system for rock drilling equipment as described in any of the above embodiments and a plurality of rock drills correspondingly connected to the electro-hydraulic control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in related technologies, the following briefly introduces the drawings required for use in the specific embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 The figure is an overall schematic diagram of an electro-hydraulic control system of a rock drilling equipment according to an embodiment of the present invention.

[0035] Description of reference numerals:

[0036] 1. Hydraulic pump; 2. Integrated valve group; 21. First reversing valve core; 22. Second reversing valve core; 23. First relief valve; 24. Second relief valve; 25. Third relief valve; 26. Fourth relief valve; 27. Main relief valve; 28. Flow valve; 3. Rock drill; 4. Controller; 5. Hydraulic oil tank; 6. Operating joystick; 7. Pressure collection component. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components; and wireless or wired connections. A person skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0040] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0041] Current anchor bolting construction primarily utilizes hydraulically controlled dual-rock drill rigs. These rigs feature a single propulsion beam with both a drilling drill and an anchor drill mounted simultaneously. These two rigs operate independently, switching between them to allow the drilling drill to drill holes and the anchor drill to install bolts. Due to the distinct functions of rock drilling and anchor bolting, and the different configurations of the rotary motors used in the drilling and anchor drills, two or more separate hydraulic rotary control systems are typically used. This results in numerous hydraulic components, a large footprint, and inconveniences in hydraulic piping layout, leading to a high failure rate.

[0042] In view of this, the present invention provides an electro-hydraulic control system for rock drilling equipment and a double rock drill anchor trolley to solve the problem that the current double rock drills are equipped with two separate hydraulic rotary operating systems, resulting in multiple hydraulic components in the operating system.

[0043] The following combination Figure 1 , describing embodiments of the present invention.

[0044] According to an embodiment of the present invention, on the one hand, an electro-hydraulic control system for rock drilling equipment is provided. The electro-hydraulic control system includes a hydraulic pump 1 , an integrated valve group 2 , and a controller 4 .

[0045] In this embodiment of the present invention, the hydraulic pump 1 is provided with an oil suction port and an oil discharge port. The oil suction port is connected to a hydraulic oil tank 5, which contains hydraulic oil. When the hydraulic pump 1 is started, the hydraulic pump 1 can provide high-pressure hydraulic oil to the hydraulic lines and various working components within the electro-hydraulic control system.

[0046] The hydraulic pump 1 can be a gear pump or other pump that can output liquid at high pressure. This embodiment only illustrates the type of hydraulic pump 1, but does not limit it. Those skilled in the art can make changes according to actual conditions as long as the same technical effect can be achieved.

[0047] Furthermore, in this embodiment of the present invention, the integrated valve assembly 2 is provided with a plurality of reversing valve cores arranged in parallel. The oil inlets of all the reversing valve cores are connected to the oil outlet. The first oil outlet of each reversing valve core is adapted to be connected to the first end of the corresponding rock drill 3, and the second oil outlet of each reversing valve core is adapted to be connected to the second end of the corresponding rock drill 3. In other words, the operating state of each rock drill 3 can be controlled by each reversing valve core.

[0048] Furthermore, in an embodiment of the present invention, the controller 4 is simultaneously connected to all reversing valve cores. In actual operation, a technician only needs to operate the controller 4 and send a signal to the reversing valve core through the controller 4 to control the operating state of each rock drill 3. For example, the controller 4 sends a control instruction to one of the reversing valve cores, so that the oil inlet of the reversing valve core is connected to the first oil outlet, that is, the reversing valve core switches to the upper state, thereby causing the high-pressure oil output by the hydraulic pump 1 to drive the corresponding rock drill 3 to rotate forward. Similarly, when the oil inlet of the reversing valve core is connected to the second oil outlet, that is, the reversing valve core switches to the lower state, thereby causing the high-pressure oil output by the hydraulic pump 1 to drive the corresponding rock drill 3 to rotate backward.

[0049] In this way, the embodiment of the present invention sets up multiple reversing valve cores arranged in parallel with each other, and controls the working state of each reversing valve core through the controller 4, so that each reversing valve core can adjust the working state of its corresponding rock drill 3. Therefore, it can be achieved through a set of hydraulic pipeline systems, and all functional requirements of the existing rock drill 3 can be met, thereby simplifying the existing two or more hydraulic systems, reducing the hydraulic components of the hydraulic system, saving internal space, thereby facilitating the layout of hydraulic pipelines, and improving the intelligence level of the equipment.

[0050] Furthermore, in an optional embodiment, the integrated valve assembly 2 is provided with a first reversing valve core 21 and a second reversing valve core 22, which are arranged in parallel. The first reversing valve core 21 is connected to the first rock drill 3, and the second reversing valve core 22 is connected to the second rock drill 3.

[0051] Specifically, the first rock drill 3 may be a hole drilling rock drill 3, and the second rock drill 3 may be an anchor rock drill 3. In actual operation, the first rock drill 3 may be started first to drill a hole, and then the first rock drill 3 may be started to install an anchor.

[0052] Furthermore, in an optional embodiment, the integrated valve group 2 further includes a first overflow valve 23 and a second overflow valve 24 .

[0053] Specifically, in this embodiment, the first relief valve 23 is provided between the first oil outlet of the first reversing valve core 21 and the first end of the first rock drill 3. The second relief valve 24 is provided between the second oil outlet of the first reversing valve core 21 and the second end of the first rock drill 3.

[0054] The overflow port of the first overflow valve 23 and the overflow port of the second overflow valve 24 are at least connected to the hydraulic oil tank 5 , and both the first overflow valve 23 and the second overflow valve 24 are communicatively connected to the controller 4 .

[0055] Therefore, first relief valve 23 and second relief valve 24 are used to limit the maximum operating pressure in their respective hydraulic lines. When the maximum operating pressure in the hydraulic line exceeds a preset value, the relief valves open, and excess pressurized oil flows back through the relief valve ports to the hydraulic oil tank 5, thereby preventing the maximum operating pressure in the hydraulic line from continuing to rise and providing overload protection.

[0056] Furthermore, in an optional embodiment, the integrated valve assembly 2 further includes a third overflow valve 25 and a fourth overflow valve 26 .

[0057] Specifically, in this embodiment, the third relief valve 25 is provided between the first oil outlet of the second reversing valve core 22 and the first end of the second rock drill 3. The fourth relief valve 26 is provided between the second oil outlet of the second reversing valve core 22 and the first end of the second rock drill 3.

[0058] The overflow port of the third overflow valve 25 and the overflow port of the fourth overflow valve 26 are at least connected to the hydraulic oil tank 5 , and the third overflow valve 25 and the fourth overflow valve 26 are both communicatively connected to the controller 4 .

[0059] The working process of the third overflow valve 25 and the fourth overflow valve 26 is similar to that of the first overflow valve 23 and the second overflow valve 24. Please refer to the working process of the first overflow valve 23 and the second overflow valve 24 in the above embodiment, and no further details will be given here.

[0060] Furthermore, in an optional embodiment, the integrated valve assembly 2 further includes a main relief valve 27, which is connected to the oil outlet of the hydraulic pump 1. The main relief valve 27 is used to set the rated pressure of the hydraulic oil in the electro-hydraulic control system, and the relief port of the main relief valve 27 is connected to at least the hydraulic oil tank 5. The main relief valve 27 is in communication with the controller 4.

[0061] Furthermore, in an optional embodiment, the integrated valve group 2 further includes a flow valve 28 , one end of the flow valve 28 is connected to the oil outlet of the hydraulic pump 1 , and the other end of the flow valve 28 is connected to the hydraulic oil tank 5 .

[0062] When the first rock drill 3 and the second rock drill 3 are not started, that is, when the controller 4 does not send a control signal, the hydraulic pump 1, the flow valve 28, and the hydraulic oil tank 5 form a standby circuit, and the hydraulic oil flows back to the hydraulic oil tank 5 after passing through the flow valve 28.

[0063] Furthermore, in an optional embodiment, the electro-hydraulic control system further includes an operating rocker 6, which is disposed on the controller 4 and is in communication with the controller 4. The operating rocker 6 can be operated by a technician. When the operating rocker 6 is moved to a corresponding position, the reversing valve cores and the rock drills 3 perform corresponding operations. The operating rocker 6 has an operating position for adjusting the direction of each reversing valve core and a pause position for deactivating the reversing valve cores. When the operating rocker 6 is in the pause position, all rock drills 3 are deactivated.

[0064] Furthermore, in an optional embodiment, the electro-hydraulic control system further includes a pressure acquisition assembly 7 connected to all rock drills 3. The pressure acquisition assembly 7 is used to collect actual pressure values ​​of the rock drills 3. The pressure acquisition assembly 7 can be used to define the maximum forward pressure limit of the rock drills 3 under different rock drilling conditions. When the operating pressure exceeds the set limit of the pressure acquisition assembly 7, technicians can control the reversing valve core through the controller 4 to reduce flow output, slow down the rotation speed, and improve the quality of the rock drilled hole.

[0065] Furthermore, in an optional embodiment, the pressure collection assembly 7 is in communication with the controller 4. When the actual pressure value of one of the rock drills 3 exceeds a preset pressure value, the controller 4 controls the reversing valve corresponding to that rock drill 3 to reduce flow output. The pressure collection assembly 7 can be used to define the maximum pressure limit for forward rotation of the rock drill 3 under different rock drilling conditions. When the operating pressure exceeds the set limit of the pressure collection assembly 7, the controller 4 can automatically control the reversing valve to reduce flow output, slowing the rotation speed and improving the quality of the rock drill hole.

[0066] Furthermore, in an optional embodiment, the pressure acquisition component 7 is a pressure sensor.

[0067] In a second aspect, the present invention provides a double rock drill anchor trolley, which includes: an electro-hydraulic control system for rock drilling equipment as described in any of the above embodiments and a plurality of rock drills correspondingly connected to the electro-hydraulic control system.

Claims

1. An electro-hydraulic control system for rock drilling equipment, characterized in that: include: A hydraulic pump (1) is provided with an oil suction port and an oil discharge port, wherein the oil suction port is connected to a hydraulic oil tank (5); An integrated valve group (2) is provided with a plurality of reversing valve cores arranged in parallel; The oil inlets of all the reversing valve cores are connected to the oil outlets, the first oil outlet of each reversing valve core is suitable for being connected to the first end of the respective corresponding rock drill (3), and the second oil outlet of each reversing valve core is suitable for being connected to the second end of the respective corresponding rock drill (3); A controller (4) is connected to communicate with all the reversing valve cores; The controller (4) sends a control instruction to one of the reversing valve cores, so that the oil inlet of the reversing valve core is connected to the first oil outlet, the reversing valve core is switched to an upper state, and the hydraulic oil output by the hydraulic pump (1) drives the corresponding rock drill (3) to rotate forward; when the oil inlet of the reversing valve core is connected to the second oil outlet, the reversing valve core is switched to a lower state, and the hydraulic oil output by the hydraulic pump (1) drives the corresponding rock drill (3) to rotate reversely; An operating rocker (6) is arranged on the controller (4) and is in communication connection with the controller (4); the operating rocker (6) has a working position for adjusting each reversing valve core to perform reversing, and a pause position for preventing the reversing valve core from starting; when the operating rocker (6) is in the pause position, all rock drills (3) are not started; The integrated valve assembly (2) is provided with a first reversing valve core (21) and a second reversing valve core (22); the first reversing valve core (21) and the second reversing valve core (22) are arranged in parallel; The first reversing valve core (21) is connected to the first rock drill (3) correspondingly; the second reversing valve core (22) is connected to the second rock drill (3) correspondingly; The electro-hydraulic control system also includes: A pressure collection component (7) connected to all the rock drills (3); the pressure collection component (7) is used to collect the actual pressure value of the rock drill (3); The pressure collection component (7) is in communication connection with the controller (4); when the actual pressure value of one of the rock drills (3) is greater than a preset pressure value, the controller (4) controls the reversing valve core corresponding to the rock drill (3) to reduce the flow output.

2. The electro-hydraulic control system according to claim 1, characterized in that: The integrated valve assembly (2) further comprises: A first overflow valve (23) is arranged between a first oil outlet of the first reversing valve core (21) and a first end of the first rock drill (3); a second overflow valve (24) arranged between a second oil outlet of the first reversing valve core (21) and a second end of the first rock drill (3); The overflow port of the first overflow valve (23) and the overflow port of the second overflow valve (24) are at least connected to the hydraulic oil tank (5); the first overflow valve (23) and the second overflow valve (24) are both connected to the controller (4) for communication.

3. The electro-hydraulic control system according to claim 2, characterized in that: The integrated valve assembly (2) further comprises: a third overflow valve (25) arranged between the first oil outlet of the second reversing valve core (22) and the first end of the second rock drill (3); a fourth overflow valve (26) arranged between the second oil outlet of the second reversing valve core (22) and the first end of the second rock drill (3); The overflow port of the third overflow valve (25) and the overflow port of the fourth overflow valve (26) are at least connected to the hydraulic oil tank (5); the third overflow valve (25) and the fourth overflow valve (26) are both connected to the controller (4) for communication.

4. The electro-hydraulic control system according to any one of claims 1 to 3, characterized in that: The integrated valve assembly (2) further comprises: a main overflow valve (27) connected to the oil outlet of the hydraulic pump (1); the main overflow valve (27) is used to set the rated pressure of the hydraulic oil in the electro-hydraulic control system; the overflow port of the main overflow valve (27) is at least connected to the hydraulic oil tank (5); The main overflow valve (27) is communicatively connected to the controller (4).

5. The electro-hydraulic control system according to claim 4, characterized in that: The integrated valve assembly (2) further comprises: a flow valve (28), one end of the flow valve (28) being connected to the oil outlet of the hydraulic pump (1), and the other end of the flow valve (28) being in communication with the hydraulic oil tank (5); When the first rock drill (3) and the second rock drill (3) are both not started, the hydraulic pump (1), the flow valve (28) and the hydraulic oil tank (5) form a standby circuit; after the hydraulic oil passes through the flow valve (28), it flows back to the hydraulic oil tank (5).

6. A double rock drill anchor trolley, characterized in that: include: An electro-hydraulic control system for rock drilling equipment according to any one of claims 1 to 5, and a plurality of rock drills (3) correspondingly connected to the electro-hydraulic control system.

Images