WO2021016885A1

WO2021016885A1 - Hydraulic control system for fully hydraulic wheel rock drill

Info

Publication number: WO2021016885A1
Application number: PCT/CN2019/098435
Authority: WO
Inventors: 徐海涵
Original assignee: 广西恒日科技股份有限公司
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2021-02-04

Abstract

A hydraulic control system for a fully hydraulic wheel rock drill comprises: an oil tank (1), a first oil pump (2), a second oil pump (3), a first priority valve (4), a first manual selector valve (5), a second priority valve (6), a first manual quadruple valve (7), a second manual quadruple valve (8), a pilot valve (9), a pilot handle group (10), a pilot control quadruple valve (11), and a second manual selector valve (12). The control system supplies oil to four support oil cylinders, a steering oil cylinder (13), a large arm lifting oil cylinder (23), a large arm oscillating oil cylinder (24), a propulsion beam oscillating oil cylinder (25), a large arm stick cylinder (26), an impactor (27), a rotary head motor (15), a thrust cylinder (16), and a compensation oil cylinder (17) of the rock drill. The control system forms a loop and has a clear structure. The invention allows execution components of the rock drill to be controlled.

Description

Hydraulic control system of full hydraulic wheel-type rock drill

Technical field

The invention relates to the technical field of rock drilling rigs, in particular to a hydraulic control system of a full hydraulic wheeled rock drilling rig.

Background technique

After the loader is equipped with a bucket, it can load the goods on the ground to complete the loading operation. However, the loader in the prior art generally has a single function and only has a loading function. In some cases, it is necessary to integrate The machine with underground drilling and loading functions can first drill the ground and then load the debris generated by the drilling.

In the prior art, the hydraulic control system of the loader is perfect, but the hydraulic system of the drilling rig needs to be designed separately. The executive components that need to be used in the rock drilling rig have at least four outrigger cylinders (namely, the first outrigger cylinder, the second outrigger cylinder, the third outrigger cylinder, and the fourth outrigger cylinder to support the entire rock drill. ), steering cylinder (used to control the steering of the rock drill), boom lift cylinder (used to control the lifting of the boom of the rock drill, thereby adjusting the height of the boom), boom swing cylinder (used to control the rock drill The swing of the boom to adjust the angle of the boom), the swing cylinder of the push beam (used to control the swing of the push beam of the rock drill to adjust the angle of the push beam), the boom cylinder (used to control the rock drilling The angle of the stick of the drill), impactor (for drilling), head rotation motor (for controlling the rotation angle of the impactor), propulsion cylinder (for providing pressure to the impactor and propelling the impactor), and compensation Oil cylinder (used to adjust the height of the drill bit of the impactor so that the drill bit is on the ground). How to provide hydraulic oil to the above-mentioned executive components is a problem that needs to be solved urgently, and this application arises from this.

Summary of the invention

The present invention aims to solve at least one of the above technical problems.

The technical problem to be solved by the present invention is to provide at least a hydraulic control system for a fully hydraulic wheel-type rock drilling rig, which realizes hydraulic oil supply to and control of the executive components.

In order to solve the above technical problems, a hydraulic control system for a full-hydraulic wheeled rock drilling rig of the present invention includes an oil tank, a first oil pump, a second oil pump, a first priority valve, a first manual selection valve, a second priority valve, and a second priority valve. A manual four-way valve, a second manual four-way valve, a pilot valve, a pilot handle group, a pilot control four-way valve, and a second manual selection valve;

The first oil outlet of the oil tank is connected to the oil inlet of the first oil pump through a pipeline, the oil outlet of the first oil pump is connected to the oil inlet of the first priority valve through the pipeline, and the first oil outlet of the first priority valve The port is connected to the oil inlet of the steering cylinder of the full-hydraulic wheeled rock drill through a pipeline, and the return port of the steering cylinder is connected to the tank through the return pipe; the second outlet of the first priority valve is connected to the first through the pipeline The oil inlet of the manual selector valve is connected, and the first oil outlet of the first manual selector valve is connected to the oil inlet of the pilot-controlled quadruple valve through the first branch. The pilot-controlled quadruple valve is respectively connected to the full hydraulic wheeled rock drilling The head slewing motor, propulsion cylinder, and compensation cylinder of the drilling rig are connected. The total oil return port of the pilot control four-way valve is connected to the oil tank through the oil return pipe; the first oil outlet of the first manual selector valve is connected to the pilot handle through the second branch The oil inlet of the group is connected, the oil outlet of the pilot handle group is connected to the pilot control four-way valve through a pipeline; the second oil outlet of the first manual selector valve is connected to the oil inlet of the second priority valve through a pipeline, The first oil outlet of the second priority valve is connected to the oil inlet of the first manual four-way valve through a pipeline. The first manual four-way valve is respectively connected to the first outrigger cylinder and the second outrigger cylinder of the full hydraulic wheeled rock drill. The outrigger cylinder, the third outrigger cylinder, and the fourth outrigger cylinder are connected; the main oil return port of the first manual four-way valve is connected to the tank through the oil return pipe, and the main oil outlet of the first manual four-way valve is connected to the oil tank through the pipeline The second manual quadruple valve is connected to the oil inlet. The second manual quadruple valve is connected to the boom lifting cylinder, boom swing cylinder, propulsion beam swing cylinder, and boom stick cylinder of the full hydraulic wheeled rock drill. Connected, the main oil return port of the second manual four-way valve is connected to the oil tank through the oil return pipe; the second oil outlet of the second priority valve is connected to the oil tank through the oil return pipe;

The second oil outlet of the oil tank is connected to the oil inlet of the second oil pump through a pipeline, and the oil outlet of the second oil pump is connected to the oil inlet of the second manual selector valve through a pipeline. The first oil outlet is connected to the oil inlet of the impactor of the full-hydraulic wheeled rock drill through a pipeline, and the oil return port of the impactor is connected to the oil tank through the oil return pipe; the second oil outlet of the second manual selector valve Connect with oil tank through oil return pipe.

After adopting the above structure, it has at least the following advantages: The structure in this application realizes the four outrigger cylinders, steering cylinders, boom lifting cylinders, boom swing cylinders, propulsion beam swing cylinders, and boom sticks of the rock drill. The oil supply of the oil cylinder, impactor, head turning motor, propulsion oil cylinder, and compensation oil cylinder forms a circuit with a clear structure, which realizes the control of the executive parts of the rock drilling rig.

Description of the drawings

Fig. 1 is a schematic diagram of a hydraulic control system of an all-hydraulic wheeled rock drilling rig according to the present application.

Fig. 2 is an enlarged schematic diagram of the position a in Fig. 1.

Fig. 3 is an enlarged schematic diagram of position b in Fig. 1.

Fig. 4 is an enlarged schematic diagram of c in Fig. 1.

Fig. 5 is an enlarged schematic diagram of position d in Fig. 1.

among them:

1. Oil tank; 2. First oil pump; 3. Second oil pump; 4. First priority valve; 5. First manual selection valve; 6. Second priority valve; 7. First manual four-way valve; 8. Two manual four-way valve; 9. Pilot valve; 10. Pilot handle group; 11. Pilot control four-way valve; 12. Second manual selection valve; 13. Steering cylinder; 14. First branch; 15. Machine Head swing motor; 16, propulsion cylinder; 17, compensation cylinder; 18, second branch; 19, first leg cylinder; 20, second leg cylinder; 21, third leg cylinder; 22, fourth branch Leg cylinder; 23. Boom lifting cylinder; 24. Boom swing cylinder; 25. Propulsion beam swing cylinder; 26. Boom stick cylinder; 27. Impactor; 28. Dust collector hydraulic motor; 29. Manual operation valve 30, the first throttle valve; 31, the second throttle valve; 32, the third throttle valve; 33, the fourth throttle valve; 34, the fifth throttle valve; 35, hydraulic lock; 36, sixth Throttle valve; 37, seventh throttle valve; 38, radiator; 39, radiator hydraulic motor; 40, eighth throttle valve; 41, the first overflow valve; 42, the second overflow valve; 43, Pilot relief valve; 44, load holding valve.

Detailed ways

Hereinafter, the terms commonly used by those skilled in the art to convey the essence of their work to others in the art will be used to describe the inventive concept of the present disclosure. However, these inventive concepts can be embodied in many different forms, and therefore should not be regarded as limited to the embodiments described herein. These embodiments are provided to make the present disclosure more detailed and complete, and to fully convey the scope of its inclusion to those skilled in the art. It should also be noted that these embodiments are not mutually exclusive. Components, steps or elements from one embodiment may be assumed to be present or used in another embodiment. Without departing from the scope of the embodiments of the present disclosure, various alternatives and/or equivalent implementations may be substituted for the specific embodiments shown and described. This application is intended to cover any modifications or variations of the embodiments discussed herein. It is obvious to those skilled in the art that only some of the described aspects may be used to practice alternative embodiments. For the purpose of illustration, specific numbers, materials, and configurations are described in the embodiments herein. However, those skilled in the art can also practice alternative embodiments without these specific details. In other cases, well-known features may be omitted or simplified so as not to make the illustrative embodiments difficult to understand.

In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "equipped", "installed", "connected", and "connected" should be understood in a broad sense, for example, they may be fixed connections. It may also be detachably connected or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication between two components. "Fixed" may be screwed or welded or bolted. For those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood under specific circumstances.

As shown in Figures 1-5, in one embodiment, a hydraulic control system for a full-hydraulic wheel-type rock drilling rig of the present invention includes an oil tank 1, a first oil pump 2, a second oil pump 3, a first priority valve 4, and a first Manual selection valve 5, second priority valve 6, first manual four-way valve 7, second manual four-way valve 8, pilot valve 9, pilot handle group 10, pilot control four-way valve 11, second manual selection valve 12;

The first oil outlet of the oil tank 1 is connected to the oil inlet of the first oil pump 2 through a pipeline, and the oil outlet of the first oil pump 2 is connected to the oil inlet of the first priority valve 4 through a pipeline. The first oil outlet of the first priority valve 4 is connected to the oil inlet of the steering cylinder 13 of the full-hydraulic wheeled rock drill through a pipeline, and the oil return port of the steering cylinder 13 is connected to the tank 1 through an oil return pipe. Connection; the second oil outlet of the first priority valve 4 is connected to the oil inlet of the first manual selector valve 5 through a pipeline, and the first oil outlet of the first manual selector valve 5 passes through the first branch 14 is connected to the oil inlet of the pilot control quadruple valve 11, and the pilot control quadruple valve 11 is respectively connected to the head turning motor 15, the propulsion cylinder 16, and the compensation cylinder of the impactor in the full hydraulic wheel drilling rig 17 is connected, the total oil return port of the pilot control four-way valve 11 is connected to the oil tank 1 through the oil return pipe; the first oil outlet of the first manual selector valve 5 is connected to the pilot handle group through the second branch 18 10 is connected to the oil inlet, the oil outlet of the pilot handle set 10 is connected to the pilot control quadruple valve 11 through a pipeline; the second oil outlet of the first manual selector valve 5 is connected to the first The oil inlet of the second priority valve 6 is connected, and the first oil outlet of the second priority valve 6 is connected to the oil inlet of the first manual four-way valve 7 through a pipeline. The first manual four-way valve 7 are respectively connected with the first outrigger cylinder 19, the second outrigger cylinder 20, the third outrigger cylinder 21, and the fourth outrigger cylinder 22 of the full hydraulic wheeled rock drill; the first manual four-way valve 7 The main oil return port is connected to the oil tank 1 through an oil return pipe, the main oil outlet of the first manual four-way valve 7 is connected to the oil inlet of the second manual four-way valve 8 through a pipeline, and the second The manual quadruple valve 8 is respectively connected with the boom lifting cylinder 23, the boom swing cylinder 24, the propulsion beam swing cylinder 25, and the boom arm cylinder 26 of the full hydraulic wheeled rock drill. The second manual quadruple The total oil return port of the valve 8 is connected to the oil tank 1 through an oil return pipe; the second oil outlet of the second priority valve 6 is connected to the oil tank 1 through an oil return pipe;

The second oil outlet of the oil tank 1 is connected to the oil inlet of the second oil pump 3 through a pipeline, and the oil outlet of the second oil pump 3 is connected to the second manual selector valve 12 through a pipeline. The oil inlet is connected. The first oil outlet of the second manual selector valve 12 is connected to the oil inlet of the impactor 27 of the full hydraulic wheeled rock drill through a pipeline, and the oil return port of the impactor 27 It is connected to the oil tank 1 through an oil return pipe; the second oil outlet of the second manual selection valve 12 is connected to the oil tank 1 through an oil return pipe.

The total oil outlet of the pilot control four-way valve 11 is connected to the oil inlet of the dust collector hydraulic motor 28 through a pipeline, and the oil return port of the dust collector hydraulic motor 28 is connected to the oil tank through an oil return pipe. A manually operated valve 29 is provided on the pipeline between the total oil outlet of the pilot control four-way valve 11 and the oil inlet of the hydraulic motor 28 of the dust collector. The manually operated valve 29 is used to switch the dust collector hydraulic motor 28 to control the start and close of the dust collector of the rock drill. With this structure, the system of the present application can drive the dust collector hydraulic motor 28 to work. In this way, the rock drill can be equipped with a dust collector so as to collect dust generated during drilling and reduce dust pollution.

As shown in Figure 2, the pilot control four-way valve 11 includes a first spool piece 11.1, a second spool piece 11.2, a third spool piece 11.3, and a fourth spool piece 11.4, the first spool piece 11.1 , The oil inlets of the second spool piece 11.2, the third spool piece 11.3, and the fourth spool piece 11.4 are all connected to the first branch 14. The first spool piece 11.1 and the second spool piece 11.2 , The oil return port of the third valve core member 11.3 and the fourth valve core member 11.4 are connected to the oil return pipe; the first oil outlet port of the first valve core member 11.1 is connected to the head rotary motor 15 through a pipeline The first oil port is connected, the second oil port of the first valve core member 11.1 is connected to the second oil port of the head rotary motor 15 through a pipeline; the first oil port of the second valve core member 11.2 The oil port is connected to the first oil port of the propulsion cylinder 16 through a pipeline, and the second oil outlet of the second valve core member 11.2 is connected to the second oil port of the propulsion cylinder 16 through a pipeline; The first oil outlet of the third valve core member 11.3 is connected to the first oil port of the propulsion cylinder 16 through a pipeline, and the first oil outlet of the third valve core member 11.3 is connected to the first oil port of the propulsion cylinder 16 A first throttle valve 30 is provided on the pipeline between one oil port, and the second oil outlet of the third valve core member 11.3 is connected to the second oil port of the propulsion cylinder 16 through the pipeline. A second throttle valve 31 is provided on the pipeline between the second oil outlet of the three valve core member 11.3 and the second oil port of the propulsion cylinder 16, and the first oil outlet of the fourth valve core member 11.4 Connected to the first oil port of the compensation oil cylinder 17 through a pipeline, a third oil port is provided on the pipeline between the first oil outlet of the fourth valve core member 11.4 and the first oil port of the compensation oil cylinder 17 In the throttle valve 32, the second oil outlet of the fourth valve core member 11.4 is connected to the second oil port of the compensation cylinder 17 through a pipeline, and the first oil outlet of the fourth valve core member 11.4 is connected to The pipeline between the second oil ports of the compensation cylinder 17 is provided with a fourth throttle valve 33. The first spool piece 11.1 controls the head turning motor 15; the second spool piece 11.2 and the third spool piece 11.3 control the propulsion cylinder 16; the fourth spool piece 11.4 controls the compensation cylinder 17. When the third valve core member 11.3 controls the propulsion cylinder 16, the functions of the first throttle valve 30 and the second throttle valve 31 can control the hydraulic flow of the propulsion cylinder 16 to make it advance slowly. The second valve core member 11.2 controls the rapid advancement of the propulsion cylinder 16 and realizes the function of adjustable propulsion speed of the propulsion cylinder 16.

As shown in Figure 3, the pilot handle set 10 includes a swing motor control valve 10.1, a first speed control valve for a propulsion cylinder 10.2, a second speed control valve for a propulsion cylinder 10.3, and a compensation cylinder control valve 10.4; the swing motor control valve 10.1, propulsion The oil inlets of the first speed control valve 10.2 of the oil cylinder, the second speed control valve 10.3 of the propulsion oil cylinder and the compensation oil cylinder control valve 10.4 are connected to the oil outlet of the pilot valve 9; the oil outlet of A of the rotary motor control valve 10.1 The port is connected with the A oil inlet control port of the first spool piece 11.1, and the B oil outlet port of the rotary motor control valve 10.1 is connected with the B oil inlet control port of the first spool piece 11.1; the propulsion The oil outlet C of the first speed control valve 10.2 of the oil cylinder is connected with the oil inlet control port C of the second valve core member 11.2, and the oil outlet D of the first speed control valve 10.2 of the propulsion oil cylinder is connected to the first valve The D oil inlet control port of the core piece 11.1 is connected; the E oil outlet port of the second speed control valve 10.3 of the propulsion cylinder is connected with the E oil inlet control port of the third valve core piece 11.3, and the propulsion cylinder has a second speed The F oil outlet of the control valve 10.3 is connected with the F oil inlet control port of the third spool piece 11.3; the G oil outlet of the compensation cylinder control valve 10.4 and the G oil inlet of the fourth spool piece 11.4 The control port is connected, and the H oil outlet of the compensation cylinder control valve 10.4 is connected with the H oil inlet control port of the fourth valve core member 11.4.

As shown in Figure 4, the first manual four-way valve 7 includes a first valve core body 7.1, a second valve core body 7.2, a third valve core body 7.3, and a fourth valve core body 7.4. The first valve core body 7.1. The oil inlets of the second valve core body 7.2, the third valve core body 7.3, and the fourth valve core body 7.4 are all connected to the first oil outlet of the second priority valve 6, and the first valve core The oil return ports of the second valve core body 7.2, the third valve core body 7.3, and the fourth valve core body 7.4 are connected to the oil return pipe; the first oil outlet of the first valve core body 7.1 passes through the pipeline Connected to the first oil port of the first outrigger cylinder 19, and the second oil outlet of the first valve core body 7.1 is connected to the second oil port of the first outrigger cylinder 19 through a pipeline; The first oil outlet of the second valve core body 7.2 is connected to the first oil port of the second leg cylinder 20 through a pipeline, and the second oil outlet of the second valve core body 7.2 is connected to the first oil port of the second leg cylinder 20 through a pipeline. The second oil port of the second outrigger cylinder 20 is connected; the first oil outlet of the third valve core body 7.3 is connected to the first oil port of the third outrigger cylinder 21 through a pipeline. The second oil outlet of the third valve core body 7.3 is connected to the second oil port of the third leg cylinder 21 through a pipeline; the first oil outlet of the fourth valve core body 7.4 is connected to the second oil outlet of the fourth valve core body 7.4 through a pipeline The first oil port of the fourth outrigger cylinder 22 is connected, and the second oil outlet of the fourth valve core body 7.4 is connected to the second oil port of the fourth outrigger cylinder 22 through a pipeline.

The first valve core body 7.1, the second valve core body 7.2, the third valve core body 7.3, and the fourth valve core body 7.4 to the first leg cylinder 19, the second leg cylinder 20, and the third leg The pipes of the leg cylinder 21 and the fourth leg cylinder 22 are each provided with a fifth throttle valve 34 and a hydraulic lock 35. The fifth throttle valve 34 controls the hydraulic flow, and the hydraulic lock 35 ensures the stability of hydraulic work.

As shown in Figure 5, the second manual four-way valve 8 includes a first valve core body 8.1, a second valve core body 8.2, a third valve core body 8.3, and a fourth valve core body 8.4, the first valve core body The oil inlets of the body 8.1, the II spool body 8.2, the III spool body 8.3, and the IV spool body 8.4 are all connected to the total oil outlet of the second manual four-way valve 8. The oil return ports of the Ⅰ spool body 8.1, the Ⅱ spool body 8.2, the Ⅲ spool body 8.3, and the Ⅳ spool body 8.4 are all connected to the oil return pipe; the first oil outlet of the Ⅰ spool body 8.1 The port is connected to the first oil port of the boom lifting cylinder 23 through a pipeline, and the second oil outlet of the first valve core body 8.1 is connected to the second oil port of the boom lifting cylinder 23 through a pipeline The first oil outlet of the second spool body 8.2 is connected to the first oil port of the boom swing cylinder 24 through a pipeline, and the second oil outlet of the second spool body 8.2 is connected through a pipeline Connected to the second oil port of the boom swing cylinder 24; the first oil outlet of the third spool body 8.3 is connected to the first oil port of the propulsion beam swing cylinder 25 through a pipeline. The second oil outlet of the III spool body 8.3 is connected to the second oil port of the propelling beam swing cylinder 25 through a pipeline; the first oil outlet of the IV spool body 8.4 is connected to the large The first oil port of the arm arm cylinder 26 is connected, and the second oil outlet of the IV valve core body 8.4 is connected to the second oil port of the boom arm cylinder 26 through a pipeline.

The first valve core body 8.1, the second valve core body 8.2, the third valve core body 8.3, and the fourth valve core body 8.4 to the boom lifting cylinder 23, boom swing cylinder 24, and propulsion beam swing cylinder 25 , The pipeline of the boom cylinder 26 is provided with a sixth throttle valve 36 and a hydraulic lock 35. The sixth throttle valve 36 controls the hydraulic flow, and the hydraulic lock 35 ensures the stability of hydraulic work.

A seventh throttle valve 37 is provided on the pipeline connecting the first oil outlet of the second manual selection valve 12 and the oil inlet of the impactor 27 of the full hydraulic wheel-type rock drill. The seventh throttle valve 37 controls the hydraulic flow.

The oil return pipe is provided with a radiator 38, the total oil outlet of the pilot control four-way valve 11 is connected to the oil inlet of the radiator hydraulic motor 39 through a pipeline, and the oil return port of the radiator hydraulic motor 39 It is connected to the oil tank through the oil return pipe. The pipeline between the total oil outlet of the pilot control quadruple valve 11 and the oil inlet of the radiator hydraulic motor 39 is provided with an eighth throttle valve 40. The pilot control quadruple A manually operated valve 29 is provided on the pipeline between the total oil outlet of the valve 11 and the oil inlet of the radiator hydraulic motor 39. The presence of the radiator 38 can reduce the temperature of the hydraulic oil in the pipeline and ensure the working stability of the hydraulic oil. The eighth throttle valve 40 is used to control the rotation speed of the radiator hydraulic motor 39.

A first relief valve 41 is provided on the pipeline connected to the first priority valve 4 of the first oil pump 2. The first relief valve 41 provides overload protection for the hydraulic system.

A second overflow valve 42 is provided on the pipeline connected to the second manual selection valve 12 of the second oil pump 3. The second relief valve 42 provides overload protection for the hydraulic system.

Both the first oil port and the second oil port of the propulsion cylinder 16 are provided with a pilot relief valve 43 and a load holding valve 44 on the pipelines. The pilot relief valve 43 is used to limit the maximum pressure of the propulsion cylinder 16, and the load holding valve 44 is used for the propulsion cylinder 16 to be in a working state perpendicular to the ground when it is working. This valve is used to prevent the 16 from falling due to its own weight.

The structure in this application realizes the four outrigger cylinders, steering cylinders, boom lifting cylinders, boom swing cylinders, propulsion beam swing cylinders, boom stick cylinders, impactors, head swing motors, The oil supply of the propulsion cylinder and the compensation cylinder forms a circuit with a clear structure, which realizes the control of the executive components of the rock drilling rig.

Work flow description:

1. In the shutdown state, each valve is in unloading state

2. After starting, the hydraulic oil of the second oil pump 3 flows directly back to the oil tank through the second manual selector valve 12;

The hydraulic oil of the first oil pump 2 passes through the first priority valve 4 to preferentially meet the action requirements of the steering cylinder 13. At this time, the rock drill can normally perform steering and other actions.

After traveling to the position that needs to be drilled, the hydraulic oil passes through the right position of the first manual selector valve 5, that is, the second oil outlet of the first manual selector valve 5, and then enters the first manual four-link valve, the second manual valve The four-link valve enters the first leg cylinder 19, the second leg cylinder 20, the third leg cylinder 21, the fourth leg cylinder 22, the boom lifting cylinder 23, the boom swing cylinder 24, and the propulsion beam swing cylinder 25 , Boom stick cylinder 26, at this time the loader can perform boom lifting and foot lifting actions to complete drilling preparation;

3. After the drilling preparation is completed, open the manual operation valve 29 of the dust collector; turn the first manual selection valve 5 to the left position, that is, the first oil outlet of the first manual selection valve 5 outputs oil, and the hydraulic oil enters the pilot valve 9. The pilot handle group 10, the pilot control quadruple valve 11, the head turning motor 15, the propulsion cylinder 16, the compensation cylinder 17, the radiator hydraulic motor 39 and the dust collector hydraulic motor 28, under the control of the pilot handle group 10, Complete actions such as pushing, dragging, and rotating; at the same time, turn the second manual selector valve 12 to the middle and right positions. The middle position is the first oil outlet and the second oil outlet of the second manual selector valve 12 at the same time. Oil, the right position is the first oil outlet of the second manual selector valve 12 to discharge oil, and perform a "light stroke, heavy stroke" action.

The above are only examples of preferred and feasible implementations of the present invention, and should not therefore limit the scope of rights of the present invention. For those skilled in the art, all other things made using the technical solutions and technical ideas of the present invention All corresponding changes shall fall within the protection scope of the claims of the present invention.

Claims

A hydraulic control system for a full hydraulic wheel-type rock drilling rig, which is characterized by comprising an oil tank (1), a first oil pump (2), a second oil pump (3), a first priority valve (4), and a first manual selection valve (5), the second priority valve (6), the first manual four-way valve (7), the second manual four-way valve (8), the pilot valve (9), the pilot handle group (10), the pilot control four-way Valve (11), the second manual selection valve (12);

The first oil outlet of the oil tank (1) is connected to the oil inlet of the first oil pump (2) through a pipeline, and the oil outlet of the first oil pump (2) is connected to the first oil pump (2) through a pipeline. The oil inlet of the priority valve (4) is connected, and the first oil outlet of the first priority valve (4) is connected to the oil inlet of the steering cylinder (13) of the full-hydraulic wheel rock drill through a pipeline, and the steering The oil return port of the oil cylinder (13) is connected to the oil tank (1) through an oil return pipe; the second oil outlet of the first priority valve (4) is connected to the oil inlet of the first manual selection valve (5) through a pipeline , The first oil outlet of the first manual selection valve (5) is connected to the oil inlet of the pilot control four-way valve (11) through a first branch (14), and the pilot control four-way valve ( 11) Connected to the head rotation motor (15), propulsion cylinder (16), and compensation cylinder (17) of the full hydraulic wheeled rock drill, respectively, and the total oil return port of the pilot control quadruple valve (11) passes through the return The oil pipe is connected to the oil tank (1); the first oil outlet of the first manual selector valve (5) is connected to the oil inlet of the pilot handle group (10) through the second branch (18), and the pilot The oil outlet of the handle group (10) is connected to the pilot control quadruple valve (11) through a pipeline; the second oil outlet of the first manual selection valve (5) is connected to the second priority valve ( 6) is connected to the oil inlet, the first oil outlet of the second priority valve (6) is connected to the oil inlet of the first manual four-way valve (7) through a pipeline, and the first manual four-way valve The coupling valve (7) is respectively connected with the first outrigger cylinder (19), the second outrigger cylinder (20), the third outrigger cylinder (21), and the fourth outrigger cylinder (22) of the full hydraulic wheeled rock drill. Connection; the total oil return port of the first manual four-way valve (7) is connected to the oil tank (1) through an oil return pipe, and the total oil outlet of the first manual four-way valve (7) is connected to the The second manual quadruple valve (8) is connected to the oil inlet, and the second manual quadruple valve (8) is respectively connected to the boom lifting cylinder (23) and boom swing cylinder of the full hydraulic wheeled rock drill (24) The propulsion beam swing cylinder (25) and the boom cylinder (26) are connected, and the total oil return port of the second manual four-way valve (8) is connected to the oil tank (1) through the oil return pipe; The second oil outlet of the second priority valve (6) is connected to the oil tank (1) through an oil return pipe;

The second oil outlet of the oil tank (1) is connected with the oil inlet of the second oil pump (3) through a pipeline, and the oil outlet of the second oil pump (3) is connected to the second oil pump (3) through a pipeline. The oil inlet of the manual selector valve (12) is connected, and the first oil outlet of the second manual selector valve (12) is connected to the oil inlet of the impactor (27) of the full hydraulic wheeled rock drill through a pipeline The oil return port of the impactor (27) is connected to the oil tank (1) through an oil return pipe; the second oil outlet of the second manual selector valve (12) is connected to the oil tank (1) through an oil return pipe .
The hydraulic control system of a full-hydraulic wheeled rock drilling rig according to claim 1, wherein the total oil outlet of the pilot control quadruple valve (11) is connected to the dust collector hydraulic motor (28) through a pipeline. ) Is connected to the oil inlet, the oil return port of the dust collector hydraulic motor (28) is connected to the oil tank through the oil return pipe, and the total oil outlet of the pilot control four-way valve (11) is connected to the dust collector hydraulic motor ( A manually operated valve (29) is provided on the pipeline between the oil inlets of 28).
The hydraulic control system of a full-hydraulic wheeled rock drilling rig according to claim 1, wherein the pilot control quadruple valve (11) includes a first valve core member (11.1) and a second valve core member ( 11.2), the third spool piece (11.3), and the fourth spool piece (11.4), the first spool piece (11.1), the second spool piece (11.2), and the third spool piece (11.3) , And the oil inlet of the fourth spool piece (11.4) are connected to the first branch (14), the first spool piece (11.1), the second spool piece (11.2), and the third spool piece (11.3), and the oil return port of the fourth spool piece (11.4) is connected to the oil return pipe; the first oil outlet of the first spool piece (11.1) is connected to the head rotary motor (15 ) Is connected to the first oil port, and the second oil outlet of the first valve core member (11.1) is connected to the second oil port of the head turning motor (15) through a pipeline; the second valve core The first oil outlet of the member (11.2) is connected to the first oil port of the propulsion cylinder (16) through a pipeline, and the second oil outlet of the second valve core member (11.2) is connected to the The second oil port of the propulsion cylinder (16) is connected; the first oil outlet of the third valve core member (11.3) is connected to the first oil port of the propulsion cylinder (16) through a pipeline, and the third The pipeline between the first oil outlet of the valve core member (11.3) and the first oil port of the propulsion cylinder (16) is provided with a first throttle valve (30), and the third valve core member (11.3 ) Is connected to the second oil port of the propulsion cylinder (16) through a pipeline, and the second oil port of the third valve core member (11.3) is connected to the second oil port of the propulsion cylinder (16) The pipeline between the second oil port is provided with a second throttle valve (31); the first oil outlet of the fourth valve core member (11.4) is connected to the first oil outlet of the compensation cylinder (17) through the pipeline Oil port connection, a third throttle valve (32) is provided on the pipeline between the first oil port of the fourth valve core member (11.4) and the first oil port of the compensation cylinder (17), so The second oil outlet of the fourth valve core member (11.4) is connected to the second oil port of the compensation cylinder (17) through a pipeline, and the first oil outlet of the fourth valve core member (11.4) is connected to The pipeline between the second oil ports of the compensation cylinder (17) is provided with a fourth throttle valve (33).
The hydraulic control system of a full-hydraulic wheeled rock drilling rig according to claim 3, characterized in that the pilot handle set (10) includes a rotary motor control valve (10.1), a propulsion cylinder first speed control valve (10.2 ), the second speed control valve of the propulsion cylinder (10.3) and the compensation cylinder control valve (10.4); the rotary motor control valve (10.1), the first speed control valve of the propulsion cylinder (10.2), and the second speed control valve of the propulsion cylinder ( 10.3) and the oil inlet of the compensation cylinder control valve (10.4) are connected to the oil outlet of the pilot valve (9); the oil outlet A of the rotary motor control valve (10.1) is connected to the first spool The oil inlet control port A of the part (11.1) is connected, and the oil outlet B of the rotary motor control valve (10.1) is connected to the oil inlet control port B of the first spool part (11.1); the propulsion cylinder The C oil outlet of a speed control valve (10.2) is connected to the C oil inlet control port of the second spool piece (11.2), and the D oil outlet of the first speed control valve (10.2) of the propulsion cylinder is connected to the The D oil inlet control port of the first spool piece (11.1) is connected; the E oil outlet of the second speed control valve (10.3) of the propulsion cylinder and the E oil inlet control of the third spool piece (11.3) Port connection, the F oil outlet port of the second speed control valve (10.3) of the propulsion cylinder is connected to the F oil inlet control port of the third valve core member (11.3); the G of the compensation cylinder control valve (10.4) The oil outlet is connected to the G oil inlet control port of the fourth spool piece (11.4), and the H oil outlet of the compensation cylinder control valve (10.4) is connected to the H inlet of the fourth spool piece (11.4). Oil control port connection.
The hydraulic control system of a full-hydraulic wheel-type rock drilling rig according to claim 1, wherein the first manual four-way valve (7) comprises a first valve core body (7.1) and a second valve core body (7.2), the third spool body (7.3), and the fourth spool body (7.4), the first spool body (7.1), the second spool body (7.2), and the third spool body (7.3) ), and the oil inlet of the fourth valve core body (7.4) are connected to the first oil outlet of the second priority valve (6), the first valve core body (7.1), the second valve core body (7.2). The oil return ports of the third valve core body (7.3) and the fourth valve core body (7.4) are connected to the oil return pipe; the first oil outlet of the first valve core body (7.1) passes through the pipeline Connected to the first oil port of the first outrigger cylinder (19), and the second oil outlet of the first valve core body (7.1) is connected to the first oil port of the first outrigger cylinder (19) through a pipeline. Two oil ports are connected; the first oil outlet of the second valve core body (7.2) is connected to the first oil port of the second leg cylinder (20) through a pipeline, and the second valve core body ( The second oil outlet of 7.2) is connected to the second oil port of the second outrigger cylinder (20) through a pipeline; the first oil outlet of the third valve core body (7.3) is connected to the second oil outlet of the third valve core body (7.3) through a pipeline The first oil port of the third leg cylinder (21) is connected, and the second oil outlet of the third valve core body (7.3) is connected to the second oil port of the third leg cylinder (21) through a pipeline. Port connection; the first oil outlet of the fourth valve core body (7.4) is connected to the first oil port of the fourth outrigger cylinder (22) through a pipeline, the fourth valve core body (7.4) The second oil outlet is connected to the second oil port of the fourth outrigger cylinder (22) through a pipeline.
The hydraulic control system of a full-hydraulic wheeled rock drilling rig according to claim 5, characterized in that the first valve core body (7.1), the second valve core body (7.2), and the third valve core body ( 7.3), and the fourth valve core body (7.4) to the first leg cylinder (19), the second leg cylinder (20), the third leg cylinder (21), and the fourth leg cylinder (22) A fifth throttle valve (34) and a hydraulic lock (35) are provided on the pipelines.
The hydraulic control system of a full hydraulic wheel-type rock drilling rig according to claim 1, wherein the second manual four-way valve (8) comprises a first valve core body (8.1) and a second valve core Body (8.2), third valve core body (8.3), and fourth valve core body (8.4), the first valve core body (8.1), the second valve core body (8.2), the third valve core body ( 8.3), and the oil inlet of the fourth valve core body (8.4) are connected with the general oil outlet of the second manual four-way valve (8), the first valve core body (8.1), the second The oil return ports of the valve core body (8.2), the third valve core body (8.3), and the fourth valve core body (8.4) are all connected to the oil return pipe; the first oil outlet of the first valve core body (8.1) The port is connected to the first oil port of the boom lifting cylinder (23) through a pipeline, and the second oil outlet of the first spool body (8.1) is connected to the boom lifting cylinder (23) through a pipeline The second oil port is connected; the first oil outlet of the second valve core body (8.2) is connected to the first oil port of the boom swing cylinder (24) through a pipeline, the second valve core body The second oil outlet of (8.2) is connected to the second oil port of the boom swing cylinder (24) through a pipeline; the first oil outlet of the third valve core body (8.3) is connected to the The first oil port of the propulsion beam swing cylinder (25) is connected, and the second oil outlet of the third spool body (8.3) is connected with the second oil port of the propulsion beam swing cylinder (25) through a pipeline The first oil outlet of the fourth valve core body (8.4) is connected to the first oil port of the boom cylinder (26) through a pipeline, and the first oil port of the fourth valve core body (8.4) The second oil outlet is connected with the second oil port of the boom stick cylinder (26) through a pipeline.
The hydraulic control system of a full-hydraulic wheeled rock drilling rig according to claim 7, wherein the first valve core body (8.1), the second valve core body (8.2), and the third valve core body ( 8.3), and on the pipeline from the fourth spool body (8.4) to the boom lifting cylinder (23), boom swing cylinder (24), propulsion beam swing cylinder (25), and boom stick cylinder (26) Both are equipped with a sixth throttle valve (36) and a hydraulic lock (35).
The hydraulic control system of a fully hydraulic wheeled rock drill according to claim 1, wherein the first oil outlet of the second manual selection valve (12) is connected to the hydraulic control system of the fully hydraulic wheeled rock drill. The pipeline connected to the oil inlet of the impactor (27) is provided with a seventh throttle valve (37).
The hydraulic control system of a full-hydraulic wheel-type rock drill according to claim 1, wherein a radiator (38) is provided on the oil return pipe, and the pilot control four-way valve (11) has a total output The oil port is connected to the oil inlet of the radiator hydraulic motor (39) through a pipeline, the oil return port of the radiator hydraulic motor (39) is connected to the oil tank through an oil return pipe, and the pilot control four-way valve (11) The pipeline between the main oil outlet and the oil inlet of the radiator hydraulic motor (39) is provided with an eighth throttle valve (40), and the total oil outlet of the pilot control four-way valve (11) is connected to the radiator The pipeline between the oil inlets of the hydraulic motor (39) is provided with a manually operated valve (29).