Hydraulic control system of track tire moving type conveyor

Abstract

The utility model relates to the field of mechanical engineering, in particular to a hydraulic control system of a crawler tire moving type conveyor, which comprises an oil tank assembly, a triple gear pump, a control valve group, a duplex switch valve group, a duplex electromagnetic switch valve, a variable speed switching valve group, a quadruple manual reversing valve, a conveying belt motor, a walking motor, a wheel side motor and a hydraulic oil cylinder, the triple gear pump is connected with a conveyor belt motor through a single-linkage valve group and is connected with a control valve group; the two-way switch valve group is connected with the control valve group and the wheel-side motor; the two-linkage electromagnetic switch valve is connected with the control valve group and the travel motor; the variable-speed switching valve group is connected with the control valve group and a brake port of the wheel-side motor; and the quadruple manual reversing valve control valve group is connected with the hydraulic oil cylinder. The multifunctional use of the conveyor is realized, the use conditions under different working conditions are improved, and the use requirements of industries and customers are met; and the production cost, the maintenance cost and the energy consumption cost of equipment are reduced.

Description

Technical Field

[0001] The utility model relates to the field of mechanical engineering, in particular to a hydraulic control system for a crawler tire mobile conveyor. Background Art

[0002] Conveyors are the most important equipment for conveying and loading and unloading bulk materials. They can be widely used in industrial fields such as mining, metallurgy, building materials, chemicals, electricity, and food processing. Conveyors are widely used in coal mines, metal mines, steel enterprises, ports, cement plants, etc. Conveyors can not only transport bulk materials, but also transport finished materials. Existing material conveyors are mainly fixed conveyors. The conveying material height and loading height of fixed conveyors are fixed and cannot be adjusted. In order to realize the functions of conveyor transportation and movement, it is necessary to add tires or crawlers, motors, reducers, external power supplies, engines, and generators to realize the overall walking and movement of crawler-carrying conveyor equipment. Others need to be externally connected or configured with engines and generators to generate electricity for the motor to use with the reducer to pull the conveyor belt to achieve the purpose of material transportation. Although this complex mechanical, hydraulic, and electrical system has been used to a limited extent, it increases production and manufacturing costs, maintenance costs, and energy consumption costs, and has limited usage functions. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a hydraulic control system for a crawler tire mobile conveyor, which realizes the multifunctional use of the conveyor, improves the use conditions under different working conditions, meets the use needs of the industry and customers, and reduces the production cost, maintenance cost, and energy consumption cost of the equipment.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A hydraulic control system for a crawler tire mobile conveyor, including an oil tank assembly, a triple gear pump, a control valve group, a double switch valve group, a double solenoid switch valve, a speed change switching valve group, a quadruple manual reversing valve, an oil return central block, an oil cooler, a conveyor belt motor, a travel motor, a wheel side motor and a hydraulic cylinder.

[0006] The oil tank assembly is connected to the oil suction port of the triple gear pump.

[0007] The first oil outlet of the triple gear pump is connected to the conveyor belt motor through a single valve group, the second oil outlet of the triple gear pump is connected to the P1 oil inlet of the control valve group, and the third oil outlet of the triple gear pump is connected to the P2 oil inlet of the control valve group;

[0008] The P1 oil inlet of the two-unit switch valve group is connected to the A1 oil outlet of the control valve group, the P2 oil inlet of the two-unit switch valve group is connected to the A3 oil outlet of the control valve group, and the oil outlet of the two-unit switch valve group is connected to the wheel motor;

[0009] The P1 oil inlet of the two-way solenoid switch valve is connected to the B1 oil outlet of the control valve group, the P2 oil inlet of the two-way solenoid switch valve is connected to the B3 oil outlet of the control valve group, and the oil outlet of the two-way solenoid switch valve is connected to the travel motor;

[0010] The oil inlet of the speed-changing switching valve group is connected to the A2 oil outlet of the control valve group, and the oil outlet of the speed-changing switching valve group is connected to the brake port of the wheel motor;

[0011] The oil inlet of the quadruple manual reversing valve is connected to the B2 oil outlet of the control valve group, and the oil outlets of the quadruple manual reversing valve are respectively connected to the hydraulic cylinders.

[0012] The oil inlet of the oil return concentrator is respectively connected to the oil return ports of the conveyor belt motor, the wheel motor, the travel motor, and the hydraulic cylinder;

[0013] The oil inlet of the oil cooler is connected to the oil return port of the control valve group and the oil return concentrated block respectively, and the oil outlet of the oil cooler is connected to the oil tank assembly.

[0014] Furthermore, the oil inlet of the single valve group is connected to the first oil outlet of the triple gear pump, and the single valve group is connected to the conveyor belt motor through a three-way flow regulating valve to control the rotational speed of the conveyor belt motor, and the oil return port of the conveyor belt motor is connected to the oil return concentrator block through a back pressure valve.

[0015] Furthermore, the conveyor belt motor includes a conveyor belt right motor and a conveyor belt left motor, the oil inlets of the conveyor belt right motor and the conveyor belt left motor are respectively connected to the oil outlet of the three-way flow regulating valve, and the oil return port of the three-way flow regulating valve is connected to the oil return central block, the oil return ports of the conveyor belt right motor and the conveyor belt left motor are connected to the oil inlet of the back pressure valve, and the oil return port of the back pressure valve is connected to the oil return central block.

[0016] Furthermore, a first solenoid valve is provided at the P1 oil inlet of the control valve group, and a second solenoid valve is provided at the P2 oil inlet of the control valve group. The YA1 coil of the first solenoid valve and the YA2 coil of the first solenoid valve are used for opening and closing the oil circuit of the control valve group.

[0017] Further, the A1 oil outlet of the control valve group and the B1 oil outlet of the control valve group are provided with a third solenoid valve, and the third solenoid valve is connected to the two-unit switch valve group and the two-unit solenoid switch valve respectively;

[0018] The A3 oil outlet of the control valve group and the B3 oil outlet of the control valve group are provided with a fourth solenoid valve, and the fourth solenoid valve is connected to the two-unit switch valve group and the two-unit solenoid switch valve respectively;

[0019] The A2 oil outlet of the control valve group and the B2 oil outlet of the control valve group are provided with a fifth solenoid valve, and the fifth solenoid valve is respectively connected to the speed change switching valve group and the four-way manual reversing valve.

[0020] Further, the two-way switch valve group is provided with a sixth solenoid valve and a seventh solenoid valve, the sixth solenoid valve is respectively connected to the P1 oil inlet, A1 oil outlet and B1 oil outlet of the two-way switch valve group, and the seventh solenoid valve is respectively connected to the P2 oil inlet, A2 oil outlet and B2 oil outlet of the two-way switch valve group;

[0021] The wheel motors include a left wheel motor and a right wheel motor, the oil inlet of the left wheel motor is connected to the A1 oil outlet and the B1 oil outlet of the two-unit switch valve group, so that the sixth solenoid valve controls the forward and reverse rotation of the left wheel motor; the oil inlet of the right wheel motor is connected to the A2 oil outlet and the B2 oil outlet of the two-unit switch valve group, so that the seventh solenoid valve controls the forward and reverse rotation of the right wheel motor;

[0022] The third solenoid valve is connected to the P1 oil inlet of the two-way switch valve group through the A1 oil outlet of the control valve group, so that the YA4 coil of the third solenoid valve controls the oil supply to the left wheel motor; the fourth solenoid valve is connected to the P2 oil inlet of the two-way switch valve group through the A3 oil outlet of the control valve group, so that the YA6 coil of the fourth solenoid valve controls the oil supply to the right wheel motor.

[0023] Further, the two-way electromagnetic switch valve is provided with an eighth electromagnetic valve and a ninth electromagnetic valve, the eighth electromagnetic valve is respectively connected to the P1 oil inlet, A1 oil outlet and B1 oil outlet of the two-way electromagnetic switch valve, and the ninth electromagnetic valve is respectively connected to the P2 oil inlet, A2 oil outlet and B2 oil outlet of the two-way electromagnetic switch valve;

[0024] The travel motor comprises a left travel motor and a right travel motor, the oil inlet of the left travel motor is connected to the oil outlets A1 and B1 of the two-way solenoid switch valve to control the forward and reverse rotation of the left travel motor; the oil inlet of the right travel motor is connected to the oil outlets A2 and B2 of the two-way solenoid switch valve to control the forward and reverse rotation of the right travel motor;

[0025] The third solenoid valve is connected to the P1 oil inlet of the two-unit solenoid switch valve through the B1 oil outlet of the control valve group, so that the YA3 coil of the third solenoid valve controls the oil supply of the left travel motor; the fourth solenoid valve is connected to the P2 oil inlet of the two-unit solenoid switch valve through the B3 oil outlet of the control valve group, so that the YA5 coil of the fourth solenoid valve controls the oil supply of the right travel motor.

[0026] Furthermore, the fifth solenoid valve is connected to the oil inlet of the speed change switching valve group through the A2 oil outlet of the control valve group, so that the YA8 coil of the fifth solenoid valve controls the braking of the wheel motor;

[0027] The fifth solenoid valve is connected to the oil inlet of the quadruple manual reversing valve through the B2 oil outlet of the control valve group, so that the YA7 coil of the fifth solenoid valve controls the oil supply of the hydraulic cylinder.

[0028] Furthermore, the hydraulic cylinder includes a conveyor belt front lifting cylinder, a front outrigger cylinder, a conveyor belt folding cylinder and a conveyor belt tail adjustment cylinder, and the conveyor belt front lifting cylinder, the front outrigger cylinder, the conveyor belt folding cylinder and the conveyor belt tail adjustment cylinder are respectively connected to the four-way manual reversing valve.

[0029] The beneficial effects of the utility model are:

[0030] The oil tank assembly supplies oil to the single valve group and the control valve group through the triple gear pump, so that the single valve group can control the conveyor belt motor, so that the conveyor belt can transport materials; the control valve group can control the travel motor, the wheel motor and the hydraulic cylinder respectively, so that the travel motor drives the crawler to travel, the wheel motor swings the conveyor belt to spread materials, and the hydraulic cylinder adjusts the working state of the conveyor. The utility model can select different functions for material conveying operations according to the working conditions; the crawler pulls the entire conveyor to flexibly transfer; the wheel motor can travel back and forth within the specified range, and the swing conveyor belt can distribute and stack materials; the whole equipment can be controlled to fold, and there is no need to climb up, and the conveyor belt can be maintained at close range; the entire conveyor can be transported in containers, and can be modularly disassembled and transported; the use of an electro-hydraulic hybrid control hydraulic system has a fast response speed of the actuator and high control accuracy. When the engine is started and unloaded, it can better protect the generator, motor and pump. When the equipment is in standby state and there is no oil pressure output, the engine unloaded can effectively reduce the energy consumption of the equipment and increase the service life of the equipment. In addition, the dual power switch uses an external power supply from the mains to power the equipment, achieving energy conservation and emission reduction. The control method of the utility model is streamlined, and the electric-hydraulic hybrid control system can be used to drive the generator to generate electricity, or it can be connected to the mains to achieve low-cost, automatic control. The equipment production cost, equipment operation maintenance cost, and energy consumption cost are all greatly reduced, saving energy and reducing emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The utility model is a control block diagram of a hydraulic control system of a crawler tire mobile conveyor.

[0032] Figure 2 The utility model is a control principle diagram of a hydraulic control system of a crawler tire mobile conveyor.

[0033] Figure 3 The utility model is a schematic diagram of the conveyor structure of the hydraulic control system of the crawler tire mobile conveyor.

[0034] Figure 4 It is a conveyor transport state diagram of the hydraulic control system of the crawler tire mobile conveyor of the utility model.

[0035] In the figure, 1- oil tank assembly, 2- triple gear pump, 21- single valve group, 211- three-way flow regulating valve, 212- back pressure valve, 22- conveyor belt motor, 221- conveyor belt right motor, 222- conveyor belt left motor, 3- control valve group, 31- first solenoid valve, 32- second solenoid valve, 33- third solenoid valve, 34- fourth solenoid valve, 35- fifth solenoid valve, 4- two-way switch valve group, 401- sixth solenoid valve, 402- seventh solenoid valve, 41- wheel side motor, 411- left wheel side motor, 412- right Wheel-side motor, 5-two-way solenoid switch valve, 501-eighth solenoid valve, 502-ninth solenoid valve, 51-travel motor, 511-left travel motor, 512-right travel motor, 6-speed switching valve group, 7-four-way manual reversing valve, 711-conveyor belt front lifting cylinder, 712-front outrigger cylinder, 713-conveyor belt folding cylinder, 714-conveyor belt tail adjustment cylinder, 8-return oil concentration block, 81-oil cooler, 9-frame, 91-track assembly, 92-closing wheel, 93-conveyor belt, 931-support frame. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0039] Please also see Figures 1 to 3A hydraulic control system for a crawler tire mobile conveyor of a preferred embodiment of the utility model includes a fuel tank assembly 1, a triple gear pump 2, a control valve group 3, a two-way switch valve group 4, a two-way solenoid switch valve 5, a speed switching valve group 6, a four-way manual reversing valve 7, an oil return concentrated block 8, an oil cooler 81, a conveyor belt motor 22, a travel motor 51, a wheel side motor 41 and a hydraulic cylinder.

[0040] The oil tank assembly 1 is connected to the oil suction port of the triple gear pump 2. In this embodiment, the triple gear pump 2 is driven by a three-phase asynchronous motor.

[0041] The first oil outlet of the triple gear pump 2 is connected to the conveyor motor 22 through the single valve group 21, the second oil outlet of the triple gear pump 2 is connected to the P1 oil inlet of the control valve group 3, and the third oil outlet of the triple gear pump 2 is connected to the P2 oil inlet of the control valve group 3.

[0042] In this embodiment, the oil inlet of the single valve group 21 is connected to the first oil outlet of the triple gear pump 2, and the single valve group 21 is connected to the conveyor belt motor 22 through the three-way flow regulating valve 211 to control the rotation speed of the conveyor belt motor 22, and the oil return port of the conveyor belt motor 22 is connected to the return oil concentration block 8 through the back pressure valve 212.

[0043] The conveyor belt motor 22 includes a conveyor belt right motor 221 and a conveyor belt left motor 222. The oil inlets of the conveyor belt right motor 221 and the conveyor belt left motor 222 are respectively connected to the oil outlet of the three-way flow regulating valve 211, and the oil return port of the three-way flow regulating valve 211 is connected to the oil return concentrated block 8. The oil return ports of the conveyor belt right motor 221 and the conveyor belt left motor 222 are connected to the oil inlet of the back pressure valve 212, and the oil return port of the back pressure valve 212 is connected to the oil return concentrated block 8. The single valve group 21 is provided with a YA18 coil, and the operation of the conveyor belt right motor 221 and the conveyor belt left motor 222 is controlled by controlling the power supply of the YA18 coil.

[0044] The three-way flow regulating valve 211 is used to control the speed of the conveyor belt motor 22 of the crawler tire mobile conveyor, and can adjust the flow rate according to the conveying capacity of the conveyor belt. The back pressure valve 212 is used to prevent liquid backflow, maintain the circuit pressure stable, and maintain the output flow of the pump more stable.

[0045] The P1 oil inlet of the two-way switch valve group 4 is connected to the A1 oil outlet of the control valve group 3 , the P2 oil inlet of the two-way switch valve group 4 is connected to the A3 oil outlet of the control valve group 3 , and the oil outlet of the two-way switch valve group 4 is connected to the wheel-side motor 41 .

[0046] The P1 oil inlet of the two-way solenoid switch valve 5 is connected to the B1 oil outlet of the control valve group 3 , the P2 oil inlet of the two-way solenoid switch valve 5 is connected to the B3 oil outlet of the control valve group 3 , and the oil outlet of the two-way solenoid switch valve 5 is connected to the travel motor 51 .

[0047] The oil inlet of the speed change switching valve group 6 is connected to the A2 oil outlet of the control valve group 3 , and the oil outlet of the speed change switching valve group 6 is connected to the brake port of the wheel motor 41 .

[0048] The oil inlet of the quadruple manual reversing valve 7 is connected to the B2 oil outlet of the control valve group 3, and the oil outlets of the quadruple manual reversing valve 7 are respectively connected to the hydraulic cylinders. In this embodiment, the hydraulic cylinders include a conveyor belt front lifting cylinder 711, a front outrigger cylinder 712, a conveyor belt folding cylinder 713, and a conveyor belt tail adjustment cylinder 714, and the conveyor belt front lifting cylinder 711, the front outrigger cylinder 712, the conveyor belt folding cylinder 713, and the conveyor belt tail adjustment cylinder 714 are respectively connected to the quadruple manual reversing valve 7.

[0049] The oil inlet of the oil return concentrator block 8 is respectively connected to the oil return ports of the conveyor belt motor 22, the wheel motor 41, the travel motor 51, and the hydraulic cylinder;

[0050] The oil inlet of the oil cooler 81 is connected to the oil return port of the control valve group 3 and the oil return concentrator block 8 respectively, and the oil outlet of the oil cooler 81 is connected to the oil tank assembly 1 .

[0051] In this embodiment, a first solenoid valve 31 is provided at the P1 oil inlet of the control valve group 3, and a second solenoid valve 32 is provided at the P2 oil inlet of the control valve group 3. The YA1 coil of the first solenoid valve 31 and the YA2 coil of the first solenoid valve 31 are used to control the opening and closing of the oil circuit of the valve group 3.

[0052] After the YA1 coil of the first solenoid valve 31 and the YA2 coil of the first solenoid valve 31 are powered off, the hydraulic oil triple gear pump 2 is connected to the oil cooler 20 through the control valve group 3, and finally returns to the oil tank, and the remaining actuators do not operate, thereby realizing the independent operation of the conveyor belt right motor 221 and the conveyor belt left motor 222.

[0053] In this embodiment, the A1 oil outlet of the control valve group 3 and the B1 oil outlet of the control valve group 3 are provided with a third solenoid valve 33 , and the third solenoid valve 33 is connected to the two-unit switch valve group 4 and the two-unit solenoid switch valve 5 respectively.

[0054] The A3 oil outlet of the control valve group 3 and the B3 oil outlet of the control valve group 3 are provided with a fourth solenoid valve 34 , and the fourth solenoid valve 34 is connected to the two-unit switch valve group 4 and the two-unit solenoid switch valve 5 , respectively.

[0055] The A2 oil outlet of the control valve group 3 and the B2 oil outlet of the control valve group 3 are provided with a fifth solenoid valve 35 , and the fifth solenoid valve 35 is connected to the speed change switching valve group 6 and the quadruple manual reversing valve 7 respectively.

[0056] In this embodiment, the two-way switch valve group 4 is provided with a sixth solenoid valve 401 and a seventh solenoid valve 402. The sixth solenoid valve 401 is respectively connected to the P1 oil inlet, A1 oil outlet and B1 oil outlet of the two-way switch valve group 4, and the seventh solenoid valve 402 is respectively connected to the P2 oil inlet, A2 oil outlet and B2 oil outlet of the two-way switch valve group 4.

[0057] The wheel motor 41 includes a left wheel motor 41411 and a right wheel motor 412. The oil inlet of the left wheel motor 411 is connected to the A1 oil outlet and the B1 oil outlet of the two-unit switch valve group 4, so that the sixth solenoid valve 401 controls the forward and reverse rotation of the left wheel motor 411; the oil inlet of the right wheel motor 412 is connected to the A2 oil outlet and the B2 oil outlet of the two-unit switch valve group 4, so that the seventh solenoid valve 402 controls the forward and reverse rotation of the right wheel motor 412. The sixth solenoid valve 401 is provided with a YA14 coil and a YA13 coil, and the forward or reverse rotation of the left wheel motor 411 is controlled by controlling the power supply of the YA14 coil or the YA13 coil; the seventh solenoid valve 402 is provided with a YA16 coil and a YA15 coil, and the forward or reverse rotation of the right wheel motor 412 is controlled by controlling the power supply of the YA16 coil or the YA15 coil.

[0058] The third solenoid valve 33 is connected to the P1 oil inlet of the two-way switch valve group 4 through the A1 oil outlet of the control valve group 3, so that the YA4 coil of the third solenoid valve 33 controls the oil supply to the left wheel motor 411; the fourth solenoid valve 34 is connected to the P2 oil inlet of the two-way switch valve group 4 through the A3 oil outlet of the control valve group 3, so that the YA6 coil of the fourth solenoid valve 34 controls the oil supply to the right wheel motor 412.

[0059] In this embodiment, the two-way solenoid switch valve 5 is provided with an eighth solenoid valve 501 and a ninth solenoid valve 502. The eighth solenoid valve 501 is respectively connected to the P1 oil inlet, A1 oil outlet and B1 oil outlet of the two-way solenoid switch valve 5, and the ninth solenoid valve 502 is respectively connected to the P2 oil inlet, A2 oil outlet and B2 oil outlet of the two-way solenoid switch valve 5.

[0060] The travel motor 51 includes a left travel motor 51511 and a right travel motor 512. The oil inlet of the left travel motor 51511 is connected to the A1 oil outlet and the B1 oil outlet of the two-link electromagnetic switch valve 5 to control the forward and reverse rotation of the left travel motor 511; the oil inlet of the right travel motor 512 is connected to the A2 oil outlet and the B2 oil outlet of the two-link electromagnetic switch valve 5 to control the forward and reverse rotation of the right travel motor 512. The eighth electromagnetic valve 501 is provided with a YA10 coil and a YA9 coil, and the forward and reverse rotation of the left travel motor 511 is controlled by controlling the power supply of the YA10 coil or the YA9 coil; the ninth electromagnetic valve 502 is provided with a YA12 coil and a YA11 coil, and the forward and reverse rotation of the right travel motor 512 is controlled by controlling the power supply of the YA12 coil and the YA11 coil.

[0061] The third solenoid valve 33 is connected to the P1 oil inlet of the two-unit solenoid switch valve 5 through the B1 oil outlet of the control valve group 3, so that the YA3 coil of the third solenoid valve 33 controls the oil supply to the left travel motor 511; the fourth solenoid valve 34 is connected to the P2 oil inlet of the two-unit solenoid switch valve 5 through the B3 oil outlet of the control valve group 3, so that the YA5 coil of the fourth solenoid valve 34 controls the oil supply to the right travel motor 512.

[0062] In this embodiment, the fifth solenoid valve 35 is connected to the oil inlet of the speed switching valve group 6 through the A2 oil outlet of the control valve group 3, so that the YA8 coil of the fifth solenoid valve 35 controls the braking of the wheel motor 41.

[0063] The fifth solenoid valve 35 is connected to the oil inlet of the quadruple manual reversing valve 7 via the B2 oil outlet of the control valve group 3, so that the YA7 coil of the fifth solenoid valve 35 controls the oil supply of the hydraulic cylinder.

[0064] The speed change switching valve group 6 is provided with a YA17 coil, and the release of the brake of the wheel motor 41 is controlled by controlling the energization of the YA17 coil.

[0065] like Figure 3 As shown, the conveyor includes a frame 9, a track assembly 91, a distribution wheel 92 and a conveyor belt 93. The two ends of the frame 9 are respectively connected to the track assembly 91 and the distribution wheel 92. The conveyor belt 93 is connected to the frame 9, and one end of the conveyor belt 93 is rotatably connected to the frame 9, and the other end is connected through a support frame 931, and the two ends of the support frame 931 are respectively rotatably connected to the conveyor belt 93 and the frame 9.

[0066] The crawler track assembly 91 is driven by the travel motor 51; the cloth wheel 92 is driven by the wheel side motor 41; the angle and the drop height of the conveyor belt 93 are controlled by the conveyor belt front lifting cylinder 711; the lifting and lowering of the tail of the conveyor belt 93 is controlled by the conveyor belt tail adjustment cylinder 714; the extension and retraction of the support frame 931 is controlled by the front support leg cylinder 712 to support the conveyor belt 93; the folding of the conveyor belt 93 is controlled by the conveyor belt folding cylinder 713 to unfold or fold the conveyor belt 93.

[0067] In this embodiment, the oil tank assembly 1 provides power to the conveyor belt motor 22, the travel motor 51, and the wheel motor 41 respectively, and the control valve group 3, the two-way switch valve group 4, the two-way solenoid switch valve 5, the speed change switching valve group 6, and the four-way manual reversing valve 7 distribute the oil circuit. The oil tank assembly 1 supplies oil to the single valve group 21 and the control valve group 3 through the triple gear pump 2, so that the single valve group 21 can control the conveyor belt motor 22, so that the conveyor belt can transport materials; the control valve group 3 can control the travel motor 51, the wheel motor 41 and the hydraulic cylinder respectively, so that the travel motor 51 drives the crawler to travel, the wheel motor 41 swings the conveyor belt to spread materials, and the hydraulic cylinder adjusts the working state of the conveyor. The utility model can select different functions to carry out material conveying operations according to the working conditions; the crawler traction whole conveyor can be flexibly transferred; the wheel side motor 41 can travel back and forth within the specified range, and the swing conveyor belt can be used to distribute the stacked materials; the whole equipment can be controlled to fold, and there is no need to climb up, and the conveyor belt can be maintained at a close distance; the whole conveyor can be transported in a container, and can be modularly disassembled and transported; the use of an electro-hydraulic hybrid control hydraulic system has a fast response speed of the actuator and high control accuracy. When the engine is started and unloaded, it can better protect the generator, motor and pump. When the equipment is in standby state and there is no oil pressure output, the engine unloaded can effectively reduce the energy consumption of the equipment and increase the service life of the equipment. In addition, the mains external power supply is used through the dual power switch to power the equipment, so as to achieve the purpose of energy saving and emission reduction. The control method of the utility model is streamlined, and the electro-hydraulic hybrid control system can be used; the generator can be driven by the engine to generate electricity, and it can also be used by connecting to the mains externally, so as to achieve low cost and automatic control. The production cost of the equipment, the maintenance cost of the equipment operation, and the energy consumption cost are greatly reduced, and energy saving and emission reduction are achieved.

[0068] The hydraulic control system of the crawler tire mobile conveyor of this embodiment includes the following working conditions:

[0069] Working condition 1: the conveyor belt 93 works alone.

[0070] The YA18 coil of the single valve group 21 is electrically reversed, and the first oil outlet of the triple gear pump 2, the oil inlet of the single valve group 21, the oil outlet of the single valve group 21, the oil inlet of the three-way flow regulating valve 211, and the oil outlet of the three-way flow regulating valve 211 are connected in sequence, and the oil outlet of the three-way flow regulating valve 211 is connected to the right motor 221 and the left motor 222 of the conveyor belt, respectively, and the hydraulic oil provides power to the right motor 221 and the left motor 222 of the conveyor belt. The return oil ports of the right motor 221 and the left motor 222 of the conveyor belt are connected to the oil inlet of the back pressure valve 212, and the oil outlet of the back pressure valve 212 is connected to the oil inlet of the return oil concentration block 8, and the return oil port of the return oil concentration block 8 is connected to the oil inlet of the oil cooler 81, and the oil inlet of the oil cooler 81 is connected to the oil tank assembly 1, so that the hydraulic oil returns to the oil tank assembly 1.

[0071] Working condition 2: The conveyor belt 93 and the material distribution wheel 92 are working, wherein the conveyor belt 93 works as shown in working condition 1; the material distribution wheel 92 controls the conveyor to swing and distribute the material:

[0072] The YA8 coil of the fifth solenoid valve 35 is energized and switched, and the YA17 coil of the speed switching valve group 6 is energized and switched, releasing the braking function of the left wheel motor 411 and the right wheel motor 412.

[0073] The YA4 coil of the third solenoid valve 33 is energized and reversed, and the A1 oil outlet of the control valve group 3, the P1 oil inlet of the two-way switch valve group 4, and the oil inlet of the left wheel motor 411 are connected in sequence, and the hydraulic oil provides power to the left wheel motor 411, and the YA14 coil and the YA13 coil of the sixth solenoid valve 401 control the forward and reverse rotation of the left wheel motor 411; the YA6 coil of the fourth solenoid valve 34 is energized and reversed, and the A3 oil outlet of the control valve group 3, the P2 oil inlet of the two-way switch valve group 4, and the oil inlet of the right wheel motor 412 are connected in sequence, and the hydraulic oil provides power to the right wheel motor 412, and the YA16 coil and the YA15 coil of the seventh solenoid valve 402 control the forward and reverse rotation of the right wheel motor 412; the oil return port of the two-way switch valve group 4 is connected to the oil tank assembly 1 to complete the recovery of the hydraulic oil. The wheel motor 41 is controlled to work and the conveyor swinging material distribution work is completed.

[0074] Working condition 3: Manually control the hydraulic cylinder to work.

[0075] The YA7 coil of the fifth solenoid valve 35 is energized and reversed, and the B2 oil outlet of the control valve group 3 is connected to the oil inlet of the four-way manual reversing valve 7. The hydraulic oil provides power to the front lifting cylinder 711, the front outrigger cylinder 712, the conveyor belt folding cylinder 713 and the conveyor belt tail adjustment cylinder 714 of the conveyor belt. The extension and retraction of the front lifting cylinder 711, the front outrigger cylinder 712, the conveyor belt folding cylinder 713 and the conveyor belt tail adjustment cylinder 714 of the conveyor belt are controlled through the four-way manual reversing valve 7 to complete the extension and retraction of the hydraulic cylinders of each component, and complete the folding and stretching actions of each component, so as to achieve the purpose of container transportation and the action of adjusting the height and angle of the conveyor belt stacking.

[0076] Working condition 4: Crawler-tracked chassis traction and transfer work.

[0077] The YA8 coil of the fifth solenoid valve 35 is energized and switched, and the YA17 coil of the speed switching valve group 6 is energized and switched, releasing the braking function of the left wheel motor 411 and the right wheel motor 412.

[0078] The YA3 coil of the third solenoid valve 33 is energized and reversed, and the B1 oil outlet of the control valve group 3, the P1 oil inlet of the two-way solenoid switch valve 5, and the oil inlet of the left travel motor 511 are connected in sequence, and the hydraulic oil provides power to the left travel motor 511, and the YA10 coil and the YA9 coil of the eighth solenoid valve 501 control the forward and reverse rotation of the left travel motor 511; the YA5 coil of the fourth solenoid valve 34 is energized and reversed, and the B3 ... 2 oil inlet and the oil inlet of the right travel motor 512 are connected in sequence, the hydraulic oil provides power to the right travel motor 512, and the YA12 coil and the YA1 coil of the ninth solenoid valve 502 control the forward and reverse rotation of the right travel motor 512; the oil return port of the two-link solenoid switch valve 5 is connected to the oil inlet of the return oil concentration block 8, the return oil port of the return oil concentration block 8 is connected to the oil inlet of the oil cooler 81, and the oil inlet of the oil cooler 81 is connected to the oil tank assembly 1, so that the hydraulic oil returns to the oil tank assembly 1. The flexible driving and walking of the control track assembly 91 is realized.

Claims

1. A hydraulic control system for a crawler tire mobile conveyor, characterized in that: It comprises an oil tank assembly (1), a triple gear pump (2), a control valve group (3), a double switch valve group (4), a double solenoid switch valve (5), a speed change switching valve group (6), a quadruple manual reversing valve (7), an oil return central block (8), an oil cooler (81), a conveyor belt motor (22), a travel motor (51), a wheel side motor (41) and a hydraulic cylinder. The oil tank assembly (1) is connected to the oil suction port of the triple gear pump (2). The first oil outlet of the triple gear pump (2) is connected to the conveyor belt motor (22) through a single valve group (21), the second oil outlet of the triple gear pump (2) is connected to the P1 oil inlet of the control valve group (3), and the third oil outlet of the triple gear pump (2) is connected to the P2 oil inlet of the control valve group (3); The P1 oil inlet of the two-way switch valve group (4) is connected to the A1 oil outlet of the control valve group (3), the P2 oil inlet of the two-way switch valve group (4) is connected to the A3 oil outlet of the control valve group (3), and the oil outlet of the two-way switch valve group (4) is connected to the wheel motor (41); The P1 oil inlet of the two-way electromagnetic switch valve (5) is connected to the B1 oil outlet of the control valve group (3), the P2 oil inlet of the two-way electromagnetic switch valve (5) is connected to the B3 oil outlet of the control valve group (3), and the oil outlet of the two-way electromagnetic switch valve (5) is connected to the travel motor (51); The oil inlet of the speed change switching valve group (6) is connected to the A2 oil outlet of the control valve group (3), and the oil outlet of the speed change switching valve group (6) is connected to the brake port of the wheel motor (41); The oil inlet of the quadruple manual reversing valve (7) is connected to the B2 oil outlet of the control valve group (3), and the oil outlets of the quadruple manual reversing valve (7) are respectively connected to hydraulic cylinders; The oil inlet of the oil return concentrator block (8) is respectively connected to the oil return ports of the conveyor belt motor (22), the wheel motor (41), the travel motor (51), and the hydraulic cylinder; The oil inlet of the oil cooler (81) is respectively connected to the oil return port of the control valve group (3) and the oil return concentrator block (8), and the oil outlet of the oil cooler (81) is connected to the oil tank assembly (1).

2. The hydraulic control system of a crawler tire mobile conveyor according to claim 1, characterized in that: The oil inlet of the single valve group (21) is connected to the first oil outlet of the triple gear pump (2); the single valve group (21) is connected to the conveyor belt motor (22) via a three-way flow regulating valve (211) to control the rotation speed of the conveyor belt motor (22); the oil return port of the conveyor belt motor (22) is connected to the oil return concentration block (8) via a back pressure valve (212).

3. The hydraulic control system of a crawler tire mobile conveyor according to claim 2 is characterized in that: The conveyor belt motor (22) comprises a conveyor belt right motor (221) and a conveyor belt left motor (222); the oil inlets of the conveyor belt right motor (221) and the conveyor belt left motor (222) are respectively connected to the oil outlets of the three-way flow regulating valve (211), and the oil return port of the three-way flow regulating valve (211) is connected to the oil return central block (8); the oil return ports of the conveyor belt right motor (221) and the conveyor belt left motor (222) are connected to the oil inlet of the back pressure valve (212), and the oil return port of the back pressure valve (212) is connected to the oil return central block (8).

4. The hydraulic control system of a crawler tire mobile conveyor according to claim 1, characterized in that: The P1 oil inlet of the control valve group (3) is provided with a first solenoid valve (31), the P2 oil inlet of the control valve group (3) is provided with a second solenoid valve (32), and the YA1 coil of the first solenoid valve (31) and the YA2 coil of the first solenoid valve (31) are used for opening and closing the oil circuit of the control valve group (3).

5. The hydraulic control system of a crawler tire mobile conveyor according to claim 4, characterized in that: The A1 oil outlet of the control valve group (3) and the B1 oil outlet of the control valve group (3) are provided with a third solenoid valve (33), and the third solenoid valve (33) is connected to the two-unit switch valve group (4) and the two-unit solenoid switch valve (5) respectively; The A3 oil outlet of the control valve group (3) and the B3 oil outlet of the control valve group (3) are provided with a fourth solenoid valve (34), and the fourth solenoid valve (34) is connected to the two-unit switch valve group (4) and the two-unit solenoid switch valve (5) respectively; The A2 oil outlet of the control valve group (3) and the B2 oil outlet of the control valve group (3) are provided with a fifth solenoid valve (35), and the fifth solenoid valve (35) is respectively connected to the speed change switching valve group (6) and the four-way manual reversing valve (7).

6. The hydraulic control system of a crawler tire mobile conveyor according to claim 5, characterized in that: The two-way switch valve assembly (4) is provided with a sixth solenoid valve (401) and a seventh solenoid valve (402), the sixth solenoid valve (401) being respectively connected to the P1 oil inlet, the A1 oil outlet and the B1 oil outlet of the two-way switch valve assembly (4), and the seventh solenoid valve (402) being respectively connected to the P2 oil inlet, the A2 oil outlet and the B2 oil outlet of the two-way switch valve assembly (4); The wheel motor (41) comprises a left wheel motor (411) and a right wheel motor (412); the oil inlet of the left wheel motor (411) is connected to the A1 oil outlet and the B1 oil outlet of the two-way switch valve group (4), so that the sixth solenoid valve (401) controls the forward and reverse rotation of the left wheel motor (411); the oil inlet of the right wheel motor (412) is connected to the A2 oil outlet and the B2 oil outlet of the two-way switch valve group (4), so that the seventh solenoid valve (402) controls the forward and reverse rotation of the right wheel motor (412); The third solenoid valve (33) is connected to the P1 oil inlet of the two-way switch valve group (4) through the A1 oil outlet of the control valve group (3), so that the YA4 coil of the third solenoid valve (33) controls the oil supply of the left wheel motor (411); the fourth solenoid valve (34) is connected to the P2 oil inlet of the two-way switch valve group (4) through the A3 oil outlet of the control valve group (3), so that the YA6 coil of the fourth solenoid valve (34) controls the oil supply of the right wheel motor (412).

7. The hydraulic control system of a crawler tire mobile conveyor according to claim 5, characterized in that: The two-way electromagnetic switch valve (5) is provided with an eighth electromagnetic valve (501) and a ninth electromagnetic valve (502), wherein the eighth electromagnetic valve (501) is respectively connected to the P1 oil inlet, the A1 oil outlet and the B1 oil outlet of the two-way electromagnetic switch valve (5), and the ninth electromagnetic valve (502) is respectively connected to the P2 oil inlet, the A2 oil outlet and the B2 oil outlet of the two-way electromagnetic switch valve (5); The travel motor (51) comprises a left travel motor (511) and a right travel motor (512); the oil inlet of the left travel motor (511) is connected to the oil outlets A1 and B1 of the two-way electromagnetic switch valve (5) to control the forward and reverse rotation of the left travel motor (511); the oil inlet of the right travel motor (512) is connected to the oil outlets A2 and B2 of the two-way electromagnetic switch valve (5) to control the forward and reverse rotation of the right travel motor (512); The third solenoid valve (33) is connected to the P1 oil inlet of the two-way solenoid switch valve (5) through the B1 oil outlet of the control valve group (3), so that the YA3 coil of the third solenoid valve (33) controls the oil supply of the left travel motor (511); the fourth solenoid valve (34) is connected to the P2 oil inlet of the two-way solenoid switch valve (5) through the B3 oil outlet of the control valve group (3), so that the YA5 coil of the fourth solenoid valve (34) controls the oil supply of the right travel motor (512).

8. The hydraulic control system of a crawler tire mobile conveyor according to claim 5, characterized in that: The fifth solenoid valve (35) is connected to the oil inlet of the speed change switching valve group (6) through the A2 oil outlet of the control valve group (3), so that the YA8 coil of the fifth solenoid valve (35) controls the braking of the wheel motor (41); The fifth solenoid valve (35) is connected to the oil inlet of the quadruple manual reversing valve (7) via the B2 oil outlet of the control valve group (3), so that the YA7 coil of the fifth solenoid valve (35) controls the oil supply of the hydraulic cylinder.

9. The hydraulic control system of a crawler tire mobile conveyor according to claim 1, characterized in that: The hydraulic cylinder comprises a conveyor belt front lifting cylinder (711), a front outrigger cylinder (712), a conveyor belt folding cylinder (713) and a conveyor belt tail adjustment cylinder (714), and the conveyor belt front lifting cylinder (711), the front outrigger cylinder (712), the conveyor belt folding cylinder (713) and the conveyor belt tail adjustment cylinder (714) are respectively connected to the four-way manual reversing valve (7).

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