A hydraulic control system for automatic drill rod connection of a jumbo

Abstract

The utility model discloses a hydraulic control system of automatic drill rod of jumbo, it includes first clamping oil cylinder, second clamping oil cylinder, third clamping oil cylinder, turnover oil cylinder, first electromagnetic reversing valve, second electromagnetic reversing valve, first hydraulic lock, second hydraulic lock, third hydraulic lock, shunt current collection valve, multipath valve, the first joint of multipath valve is connected with first clamping oil cylinder through first hydraulic lock, the second joint of multipath valve is connected with second hydraulic lock, third hydraulic lock through shunt current collection valve, and second hydraulic lock is connected with second clamping oil cylinder through first electromagnetic reversing valve, and third hydraulic lock is connected with third clamping oil cylinder through second electromagnetic reversing valve, and the third joint of multipath valve is connected with turnover oil cylinder. The utility model discloses control accurate, and maintenance is convenient, can more conveniently realize jumbo automatic drill rod function, adapts to a variety of geological conditions, guarantees high -efficient operation and safety.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic control technology for rock drilling rigs, and in particular relates to a hydraulic control system for automatic drill rod connection of a rock drilling rig. Background Technology

[0002] A rock drilling rig is a type of rock drilling equipment used in tunnel and underground engineering. A typical rock drilling rig includes a body, a traveling mechanism, a boom, and drill rods. During operation, the boom mechanism extends the drill rod to the appropriate position. Controlled by impact and drill bit rotation mechanisms, the drill rod rotates and impacts the drill bit continuously. Simultaneously, a dust removal mechanism expels the drilled debris, thus creating blast holes in the rock face. When drilling depths exceeding the length of a single drill rod, a rod extension operation is required to achieve the desired depth. Manual rod extension is time-consuming, inefficient, labor-intensive, and unsafe. Summary of the Invention

[0003] To address the aforementioned problems, the purpose of this invention is to provide a hydraulic control system for automatically connecting drill rods on a rock drilling rig.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0005] A hydraulic control system for automatically connecting drill rods on a rock drilling rig includes a first clamping cylinder, a second clamping cylinder, a third clamping cylinder, a tilting cylinder, a first solenoid directional valve, a second solenoid directional valve, a first hydraulic lock, a second hydraulic lock, a third hydraulic lock, a flow divider / combiner valve, and a multi-way valve. Ports A1 and B1 of the first port of the multi-way valve are connected to ports V1 and V2 of the first hydraulic lock, respectively. Ports C1 and C2 of the first hydraulic lock are connected to the rod-side chamber and rodless chamber of the first clamping cylinder, respectively. Port A2 of the second port of the multi-way valve is connected to port V1 of the flow divider / combiner valve, and port B2 is connected to ports V2 of the second hydraulic lock and the third hydraulic lock. The oil port V1 is connected to the oil port A of the diverter valve and the oil port V1 of the second hydraulic lock. The oil port B is connected to the oil port V2 of the third hydraulic lock. The oil ports C1 and C2 of the second hydraulic lock are connected to the oil ports P and A of the first solenoid directional valve, respectively. The oil ports A and P of the first solenoid directional valve are connected to the rodless chamber and rod chamber of the second clamping cylinder, respectively. The oil ports C1 and C2 of the third hydraulic lock are connected to the oil ports A and P of the second solenoid directional valve, respectively. The oil ports A and P of the second solenoid directional valve are connected to the rodless chamber and rod chamber of the third clamping cylinder, respectively. The oil ports A3 and B3 of the third port of the multi-way valve are connected to the tilting cylinder, respectively.

[0006] Due to the adoption of the technical solution described above, this utility model has the following advantages:

[0007] The hydraulic control system of this rock drilling rig's automatic drill rod connection is simple to operate, precise in control, convenient to maintain, and highly practical. It can more easily realize the automatic drill rod connection function of the rock drilling rig, save manpower, reduce equipment failure rate and maintenance costs, adapt to various geological conditions, ensure high-efficiency operation and safety, realize automated and efficient operation, and has good promotion and application value. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the hydraulic control system for the automatic drill rod connection of the rock drilling rig of this utility model;

[0009] Figure 2 This is a schematic diagram of the working state of the hydraulic control system for the automatic drill rod connection of the rock drilling rig of this utility model.

[0010] In the diagram: 1 - Second clamping cylinder; 2 - Third clamping cylinder; 3 - Second solenoid directional valve; 4 - Tilting cylinder; 5 - Third hydraulic lock; 6 - Diverting and combining valve; 7 - Multi-way valve; 8 - First hydraulic lock; 9 - First clamping cylinder; 10 - Second hydraulic lock; 11 - First solenoid directional valve. Detailed Implementation

[0011] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0012] like Figure 1 , 2As shown, the hydraulic control system for the automatic drill rod connection of the rock drilling rig is installed on the propulsion beam assembly of the rock drilling rig. It includes a first clamping cylinder 9, a second clamping cylinder 1, a third clamping cylinder 2, a tilting cylinder 4, a first solenoid directional valve 11, a second solenoid directional valve 3, a first hydraulic lock 8, a second hydraulic lock 10, a third hydraulic lock 5, a flow divider / combiner valve 6, and a multi-way valve 7. The first clamping cylinder 9 is used to drive the clamping of the top plate (i.e., clamping device) of the rock drilling rig. The second clamping cylinder 1 and the third clamping cylinder 2 are used to drive the opening and clamping of the movable jaws to achieve the purpose of picking up and putting down the drill rod. The flipping cylinder 4 is used to flip the drill rod. The first port A1 and port B1 of the multi-way valve 7 are connected to the ports V1 and V2 of the first hydraulic lock 8, respectively. The ports C1 and C2 of the first hydraulic lock 8 are connected to the rod chamber and rodless chamber of the first clamping cylinder 9, respectively, to realize the function of clamping the drill rod with the top plate. The second port A2 is connected to port V of the flow divider / combiner valve 6, and port B2 is connected to port V2 of the second hydraulic lock 10 and port V1 of the third hydraulic lock 5. Port A of the flow divider / combiner valve 6 is connected to port V1 of the second hydraulic lock 10, and port B is connected to port V2 of the third hydraulic lock 5. Ports C1 and C2 of the second hydraulic lock 10 are connected to ports P and A of the first solenoid directional valve 11, respectively. Port A of the first solenoid directional valve 11... Oil port P is connected to the rodless chamber and rod chamber of the second clamping cylinder 1 respectively. Oil ports C1 and C2 of the third hydraulic lock 5 are connected to oil ports A and P of the second solenoid directional valve 3 respectively. Oil ports A and P of the second solenoid directional valve 3 are connected to the rodless chamber and rod chamber of the third clamping cylinder 2 respectively, realizing the function of clamping drill pipe and connecting drill pipe. Oil ports A3 and B3 of the third port of the multi-way valve 7 are connected to the tilting cylinder 4 respectively, realizing the function of tilting drill pipe when connecting drill pipe.

[0013] In the aforementioned first hydraulic lock 8, second hydraulic lock 10, and third hydraulic lock 5, oil port V1 and oil port C1 are connected to form working oil circuit a, and oil port V2 and oil port C2 are connected to form working oil circuit b.

[0014] The hydraulic control system for the automatic drill rod connection of the rock drilling rig of this utility model works as follows:

[0015] S1. When the first operating handle of the multi-way valve 7 is pulled back, oil comes out of the A1 oil port, passes through the first hydraulic lock 8 and reaches the rod chamber of the first clamping cylinder 9, causing the piston rod to retract and drive the top plate to clamp the tail of the first drill rod.

[0016] S2, the second operating handle of the multi-way valve 7 is pulled back, oil comes out of port A2, and flows through the diversion and combination valve 6 to the oil inlet of the second hydraulic lock 10 and the third hydraulic lock 5. At this time, the flow rate and pressure of the two hydraulic oil outlets of the diversion and combination valve 6 are the same, which enables the second clamping cylinder 1 and the third clamping cylinder 2 to work synchronously. Therefore, the hydraulic oil reaches the rod chamber of the second clamping cylinder 1 and the third clamping cylinder 2, causing the piston rods of the two clamping cylinders to retract synchronously, the movable jaws to open, and the second drill rod to be inserted.

[0017] S3, the second operating handle of the multi-way valve 7 is pushed forward, oil comes out of port B2, and reaches the rodless chamber of the second clamping cylinder 1 and the third clamping cylinder 2 through the second hydraulic lock 10 and the third hydraulic lock 5, so that the piston rods of the two clamping cylinders retract, driving the movable jaw to clamp the second drill rod.

[0018] S4. Pull the third operating handle of the multi-way valve 7 backward to flip the cylinder 4. The second drill rod is placed in the appropriate position of the open support. Then, press the buttons of the first solenoid reversing valve 11 and the second solenoid reversing valve 3 to reverse them. At this time, the second clamping cylinder 1 and the third clamping cylinder 2 are in a floating state, so that there is a gap between the movable jaw and the drill rod. At this time, the rock drill is aligned with the second drill rod and rotates and moves forward to make the second drill rod tightly connected to the rock drill.

[0019] S5. When the second operating handle of the multi-way valve 7 is pulled back, oil flows out of port A2 and through the diversion and mixing valve 6, the second hydraulic lock 10, and the third hydraulic lock 5 to the rod chambers of the second clamping cylinder 1 and the third clamping cylinder 2, causing the piston rods of the second clamping cylinder 1 and the third clamping cylinder 2 to retract synchronously and the movable jaws to open. At this time, the third operating handle of the multi-way valve 7 is pulled back, and the tilting cylinder 4 is tilted to the designated position. At this time, the rock drill drives the second drill rod forward until it approaches the first drill rod, at which point the rock drill rotates, and the second drill rod is tightly connected to the first drill rod. The first operating handle of the multi-way valve 7 is pushed forward, oil flows out of port B1, and oil enters the rodless chamber of the first clamping cylinder 9, causing the piston rod to extend and the top plate to loosen, thus enabling the required drilling operation.

[0020] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydraulic control system for automatic drill rod connection on a rock drilling rig, characterized in that: It includes a first clamping cylinder, a second clamping cylinder, a third clamping cylinder, a tilting cylinder, a first solenoid directional valve, a second solenoid directional valve, a first hydraulic lock, a second hydraulic lock, a third hydraulic lock, a flow divider / combiner valve, and a multi-way valve. The first port A1 and port B1 of the multi-way valve are connected to ports V1 and V2 of the first hydraulic lock, respectively. Ports C1 and C2 of the first hydraulic lock are connected to the rod-side and rodless-side chambers of the first clamping cylinder, respectively. The second port A2 of the multi-way valve is connected to port V of the flow divider / combiner valve, and port B2 is connected to ports V2 of the second hydraulic lock and V1 of the third hydraulic lock, thus dividing the flow... Port A of the manifold valve is connected to port V1 of the second hydraulic lock, and port B is connected to port V2 of the third hydraulic lock. Ports C1 and C2 of the second hydraulic lock are connected to ports P and A of the first solenoid directional valve, respectively. Ports A and P of the first solenoid directional valve are connected to the rodless chamber and rod chamber of the second clamping cylinder, respectively. Ports C1 and C2 of the third hydraulic lock are connected to ports A and P of the second solenoid directional valve, respectively. Ports A and P of the second solenoid directional valve are connected to the rodless chamber and rod chamber of the third clamping cylinder, respectively. Ports A3 and B3 of the third port of the multi-way valve are connected to the tilting cylinder, respectively.

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