Vehicle-mounted cable winding, arranging and conveying automation system

Abstract

The invention provides a vehicle-mounted cable winding, arranging and conveying automation system, which belongs to the technical field of coal mine underground operation vehicles, and comprises a wheel type operation vehicle, a cable drum lifting mechanism, a cable arranging mechanism, a cable pressing mechanism and a cable drum. The device can realize mechanization, automation and long-distance remote control operation of cable laying, cable feeding, winding recovery and cable arrangement of underground cables with different specifications and diameters, so that the labor intensity of workers is greatly reduced, the use safety of the cables is improved, the efficiency of transferring, recovering, winding and cable feeding of the underground cables is improved, and the labor intensity of workers is reduced. And technical support can be provided for an intelligent trackless auxiliary transportation system combined with automatic equipment.

Description

Technical Field

[0001] The present invention belongs to the technical field of underground coal mine operation vehicles, and specifically discloses a vehicle-mounted cable coiling, discharging, and feeding automation system. Background Art

[0002] With the rapid development of coal mining and excavation technologies and equipment, how to improve the efficiency of auxiliary transportation operations and effectively ensure the high-efficiency production of coal mines has become an urgent problem to be solved for auxiliary transportation equipment. Cables are the main power supply systems for underground coal mining equipment. When the existing cables are being transferred, recovered, and laid and fed, they are basically manually coiled and laid by manpower, which not only has low efficiency, but also high labor intensity for personnel, and there are also certain safety hazards. Summary of the Invention

[0003] The present invention provides a vehicle-mounted cable coiling, discharging, and feeding automation system to achieve the mechanization and automation of cable unwinding, feeding, winding and recovery, and cable discharging for different specifications and diameters of cables underground.

[0004] The above-mentioned on-vehicle cable coiling, arranging, and feeding automation system includes a wheeled work vehicle, a cable reel lifting mechanism, a cable arranging mechanism, a cable pressing mechanism, a cable reel, a gear pump, a pneumatically controlled on-off valve, a parking brake valve, an air tank, an electromagnetic reversing valve I, a two-way hydraulic lock, an electromagnetic reversing valve III, a balance valve I, an electromagnetic reversing valve IV, an electro-hydraulic proportional valve, a balance valve II, and an electronic control processing unit; the cable reel lifting mechanism includes a cable reel support, a cable reel lifting oil cylinder, a clamping mechanism, and a cable reel driving motor; the cable reel support is hinged to the frame of the wheeled work vehicle; both ends of the cable reel lifting oil cylinder are respectively hinged to the frame and the cable reel support; two groups of clamping mechanisms are oppositely installed on the cable reel support for clamping the cable reel, and the clamping mechanism is driven by the cable reel driving motor to rotate; the cable arranging mechanism includes a cable arranging support, a cable arranging lifting oil cylinder, a sliding guide rail, a sliding block, a cable feeder, and a linear motor; the cable arranging support is hinged to the cable reel support; both ends of the cable arranging lifting oil cylinder are respectively hinged to the cable reel support and the cable arranging support; the sliding guide rail is fixedly installed on the cable arranging support and is parallel to the central axis of the cable reel; the sliding block is slidably installed on the sliding guide rail and is driven by the linear motor to slide along the sliding guide rail; the cable feeder is fixedly installed on the sliding block; the cable pressing mechanism includes a cable pressing support, a cable pressing oil cylinder, and a cable pressing roller; the cable pressing support is hinged to the cable reel support; both ends of the cable pressing oil cylinder are respectively hinged to the cable reel support and the cable pressing support; the cable pressing roller is rotatably installed on the cable pressing support and is parallel to the central axis of the cable reel; a clamping column matching with the clamping mechanism is arranged at the central position of the cable reel; the oil outlet of the gear pump is connected to the P port of the pneumatically controlled on-off valve; the P port of the parking brake valve is connected to the air outlet of the air tank, the A port is connected to the control port of the pneumatically controlled on-off valve, and the T port is open; the P port of the electromagnetic reversing valve I is connected to the A port of the pneumatically controlled on-off valve, the A port is connected to the A' port of the two-way hydraulic lock, the B port is connected to the B' port of the two-way hydraulic lock, and the T port is connected back to the hydraulic oil tank; the A port of the two-way hydraulic lock is connected to the rodless cavity of the cable reel lifting oil cylinder, and the B port is connected to the rodless cavity of the cable reel lifting oil cylinder; the P port of the electromagnetic reversing valve III is connected to the A port of the pneumatically controlled on-off valve, the A port is connected to the A' port of the balance valve I, the B port is connected to the B' port of the balance valve I, and the T port is connected back to the hydraulic oil tank; the A port of the balance valve I is connected to the rodless cavity of the cable arranging lifting oil cylinder, and the B port is connected to the rodless cavity of the cable arranging lifting oil cylinder; the P port of the electromagnetic reversing valve IV is connected to the A port of the pneumatically controlled on-off valve, the A port is connected to the rodless cavity of the cable pressing oil cylinder, and the B port is connected to the rodless cavity of the cable pressing oil cylinder; the P port of the electro-hydraulic proportional valve is connected to the A port of the pneumatically controlled on-off valve, the A port is connected to the A' port of the balance valve II, the B port is connected to the B' port of the balance valve II, and the T port is connected back to the hydraulic oil tank; the A port of the balance valve II is connected to the A port of the cable reel driving motor, and the B port is connected to the B port of the cable reel driving motor; the control ports of the linear motor, the electromagnetic reversing valve, and the electro-hydraulic proportional valve are all connected to the electronic control processing unit.

[0005] The above-mentioned on-vehicle cable coiling, uncoiling and feeding automation system further includes an electromagnetic directional control valve V; the P port of the electromagnetic directional control valve V is connected to the A port of the pneumatic on-off valve, the A port is connected to the brake of the cable reel driving motor, the B port is blocked, and the T port is connected back to the hydraulic oil tank.

[0006] In the above-mentioned on-vehicle cable coiling, uncoiling and feeding automation system, the cable reel lifting mechanism further includes a support column and an electromagnetic directional control valve II; the support column includes a lower fixed column, a support oil cylinder, an upper telescopic column, a lock and a buffer rubber pad; the bottom end of the lower fixed column is fixed on the vehicle frame; the bottom end of the support oil cylinder is located inside the lower fixed column and connected to the lower fixed column, and the top end is located inside the upper telescopic column and connected to the upper telescopic column; the lock is connected to the top end of the lower fixed column through a hinge; the buffer rubber pad is fixedly installed at the top end of the upper telescopic column; the control port of the electromagnetic directional control valve II is connected to the electronic control processing unit, the P port is connected to the A port of the pneumatic on-off valve, the A port is connected to the rodless cavity of the support oil cylinder, the B port is connected to the rod cavity of the support oil cylinder, and the T port is connected back to the hydraulic oil tank.

[0007] In the above-mentioned on-vehicle cable coiling, uncoiling and feeding automation system, a sealing plate is fixedly installed on the output end of the cable reel driving motor; the clamping mechanism includes a V-shaped plate, a baffle plate and a locking pin; the V-shaped plate is fixed on the sealing plate, the first end is provided with a locking hole I, and the second end is hinged to the first end of the baffle plate; the baffle plate is provided with a limiting hole, a connecting ear and a locking pin mounting seat, the limiting hole penetrates through the baffle plate, two connecting ears are located on both sides of the limiting hole, the connecting ear is provided with a locking hole II, and the locking pin is slidably installed on the locking pin mounting seat and aligned with the locking hole II; the baffle plate rotates to sleave the limiting hole on the first end of the V-shaped plate to form a triangular clamping area with the V-shaped plate, and the locking hole II is aligned with the locking hole I; the clamping column is a triangular clamping column and cooperates with the triangular clamping area; a lower limit for the cable arranging support is provided on the cable reel support.

[0008] In the above-mentioned on-vehicle cable coiling, discharging and feeding automation system, the cable conveyor includes a cable conveyor base, a cable conveyor rubber track I, a rotating motor I, a cable conveyor rubber track II, a rotating motor II, a cable conveyor guide rail, a cable conveyor cylinder and an electromagnetic reversing valve VI; the cable conveyor base is fixedly installed on the sliding block; the cable conveyor rubber track I is fixedly installed on the cable conveyor base through a track frame I, perpendicular to the central axis of the cable reel; the cable conveyor guide rail is fixed on the cable conveyor base, parallel to the central axis of the cable reel; the cable conveyor rubber track II is slidably installed on the cable conveyor guide rail through a track frame II, arranged opposite to the cable conveyor rubber track I; the area between the cable conveyor rubber track I and the cable conveyor rubber track II is the cable conveyor area, and the cable conveyor rubber track I and the cable conveyor rubber track II are respectively driven by the rotating motor I and the rotating motor II to rotate synchronously; the control ports of the rotating motor I and the rotating motor II are connected to the electronic control processing unit; the cylinder body of the cable conveyor cylinder is connected to the cable conveyor base, and the piston rod is connected to the track frame II; the control port of the electromagnetic reversing valve VI is connected to the electronic control processing unit, the P port is connected to the air outlet of the air tank, the A port is connected to the rodless cavity of the cable conveyor cylinder, the B port is connected to the rod cavity of the cable conveyor cylinder, and the T port is open.

[0009] In the above-mentioned on-vehicle cable coiling, discharging and feeding automation system, the cable conveyor further includes a mechanical rocker; a threaded hole is provided on the cable conveyor base; a threaded section is provided on the mechanical rocker, and the threaded section passes through the threaded hole of the cable conveyor base; the first end of the mechanical rocker is rotatably connected to the track frame II, and a crank is provided at the second end.

[0010] In the above-mentioned on-vehicle cable coiling, discharging and feeding automation system, the cable conveyor further includes a 3D scanner, a decontamination mechanism and a tension sensor; the 3D scanner and the decontamination mechanism are both fixedly installed on the cable conveyor base, on both sides or on the same side of the cable conveyor area; the tension sensor is used to monitor the conveying force of the cable; the 3D scanner, the decontamination mechanism and the tension sensor are all connected to the electronic control processing unit.

[0011] In the above-mentioned on-vehicle cable coiling, discharging and feeding automation system, an angular travel sensor is installed between the cable pressing bracket and the cable reel bracket; a cable pressing pressure sensor is fixedly installed on the cable pressing roller; the angular travel sensor and the cable pressing pressure sensor are both connected to the electronic control processing unit.

[0012] In the above-mentioned on-vehicle cable coiling, discharging and feeding automation system, a rotational speed sensor is fixedly installed on the cable reel, and a cable fastening mechanism is fixedly installed on the inner wall; a bearing pressure sensor is fixedly installed on the clamping column; the rotational speed sensor and the bearing pressure sensor are both connected to the electronic control processing unit.

[0013] The above vehicle-mounted cable coiling, discharging and feeding automation system further includes a liquid filling valve, an accumulator, a foot brake valve, wheel side brakes, a pneumatic control reversing valve, a parking brake, an air compressor, a check valve II, a safety valve II and a ball valve; the oil outlet of the gear pump is respectively connected to the oil inlet of the safety valve I, the P port of the pneumatic control on-off valve and the P port of the liquid filling valve; the oil outlet of the safety valve I is connected back to the hydraulic oil tank; the A port of the liquid filling valve is connected to the accumulator, and the return oil port T and the return oil port O are connected back to the hydraulic oil tank; the P port of the foot brake valve is connected to the accumulator, the A port is connected to the wheel side brakes, and the T port is connected back to the hydraulic oil tank; the P port of the pneumatic control reversing valve is connected to the accumulator, the A port is connected to the parking brake, and the T port is connected back to the hydraulic oil tank; the A port of the parking brake valve is respectively connected to the control port of the pneumatic control on-off valve and the control port of the pneumatic control reversing valve; the air compressor is connected to the air inlet of the check valve II, the air outlet of the check valve II is connected to the air inlet of the air tank, and a safety valve II and a ball valve are installed on the air tank.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The above vehicle-mounted cable coiling, discharging and feeding automation system has a flexible transportation capacity. Through the orderly coordinated control of machinery, electricity, hydraulics and pneumatics, it can realize the mechanization, automation and long-distance remote control operation of cable laying, feeding, winding recovery and cable discharging of different specifications and diameters underground, greatly reducing the labor intensity of workers, improving the safety of cable use, enhancing the efficiency of cable transfer, recovery coiling and feeding underground, and providing technical support for the intelligent trackless auxiliary transportation system combined with automation equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is a schematic structural diagram of the vehicle-mounted cable coiling, discharging and feeding automation system;

[0018] Figure 2 is a schematic structural diagram of the cable reel lifting mechanism;

[0019] Figure 3 is a schematic structural diagram of the support column;

[0020] Figure 4 is a schematic structural diagram of the cable discharging mechanism;

[0021] Figure 5 is a schematic structural diagram of the cable conveyor;

[0022] Figure 6 It is a structural schematic diagram of the cable pressing mechanism;

[0023] Figure 7 It is a structural schematic diagram of the cable reel;

[0024] Figure 8 It is a control schematic diagram of the vehicle-mounted cable coiling, discharging and feeding automation system.

[0025] In the figure: 1 - Cable reel lifting mechanism; 1.1 - Cable reel support; 1.2 - Cable reel lifting oil cylinder; 1.3 - Support column; 1.3.1 - Lower fixed column; 1.3.2 - Support oil cylinder; 1.3.3 - Upper telescopic column; 1.3.4 - Buffer rubber pad; 1.3.5 - Lock; 1.4 - Clamping mechanism; 1.4.1 - V-shaped plate; 1.4.2 - Baffle; 1.4.3 - Locking pin; 1.5 - Cable reel driving motor; 1.6 - Lower limit of the cable arranging support;

[0026] 2 - Cable arranging mechanism; 2.1 - Cable arranging support; 2.2 - Cable arranging lifting oil cylinder; 2.3 - Sliding guide rail; 2.4 - Sliding block; 2.5 - Cable conveyor; 2.5.1 - Cable conveyor base; 2.5.2 - Cable conveyor rubber track Ⅰ; 2.5.3 - Rotating motor Ⅰ (M2); 2.5.4 - Cable conveyor rubber track Ⅱ; 2.5.5 - Rotating motor Ⅱ (M3); 2.5.6 - Cable conveyor guide rail; 2.5.7 - Cable conveyor cylinder; 2.5.8 - Mechanical rocker; 2.5.9 - 3D scanner; 2.5.10 - Decontamination mechanism; 2.5.11 - Tensile force sensor DT (LL); 2.6 - Linear motor (M1);

[0027] 3 - Cable pressing mechanism; 3.1 - Cable pressing support; 3.2 - Cable pressing oil cylinder; 3.3 - Cable pressing roller; 3.4 - Cable pressing pressure sensor DT (YLYL); 3.5 - Angular travel sensor DT (JXC);

[0028] 4 - Cable reel; 4.1 - Clamping column; 4.2 - Rotational speed sensor DT (ZS); 4.3 - Cable fastening mechanism; 4.4 - Bearing pressure sensor DT (CZYL);

[0029] 5 - Hydraulic oil tank; 6 - Gear pump; 7 - Filter; 8 - Safety valve Ⅰ; 9 - Pneumatically controlled on - off valve; 10 - Fill valve; 11 - Accumulator; 12 - Foot brake valve; 13 - Wheel - end brake; 14 - Pneumatically controlled directional valve; 15 - Parking brake; 16 - Parking brake valve; 17 - Air tank; 18 - Solenoid directional valve Ⅰ; 19 - Double - acting hydraulic lock; 20 - Solenoid directional valve Ⅱ; 21 - Solenoid directional valve Ⅲ; 22 - Balance valve Ⅰ; 23 - Solenoid directional valve Ⅳ; 24 - Electrically controlled proportional valve; 25 - Balance valve Ⅱ; 26 - Solenoid directional valve Ⅴ; 27 - Solenoid directional valve Ⅵ; 28 - Electric control processing unit; 29 - Power supply; 30 - Air compressor; 31 - Check valve Ⅱ; 32 - Safety valve Ⅱ; 33 - Ball valve. Specific embodiments

[0030] The technical solutions of the present invention will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0031] This embodiment provides an on - vehicle cable coiling, discharging and feeding automation system, including a wheeled work vehicle, a cable reel lifting mechanism 1, a cable laying mechanism 2, a cable pressing mechanism 3, a cable reel 4, a hydraulic oil tank 5, a gear pump 6, a filter 7, a safety valve Ⅰ 8, a pneumatically controlled on - off valve 9, a fill valve 10, an accumulator 11, a foot brake valve 12, a wheel - end brake 13, a pneumatically controlled directional valve 14, a parking brake 15, a parking brake valve 16, an air tank 17, a solenoid directional valve Ⅰ 18, a double - acting hydraulic lock 19, a solenoid directional valve Ⅱ 20, a solenoid directional valve Ⅲ 21, a balance valve Ⅰ 22, a solenoid directional valve Ⅳ 23, an electrically controlled proportional valve 24, a balance valve Ⅱ 25, a solenoid directional valve Ⅴ 26, a solenoid directional valve Ⅵ 27, an electric control processing unit 28, a power supply 29, an air compressor 30, a check valve Ⅱ 31, a safety valve Ⅱ 32 and a ball valve 33.

[0032] The cable reel lifting mechanism 1 can lift the cable reel 4 off the ground, facilitating transportation with the vehicle, lowering it to the ground, and disassembling the cable reel 4. At the same time, it combines the cable laying mechanism 2, the cable pressing mechanism 3 and the cable reel 4 with the frame of the wheeled work vehicle to achieve various functions; the cable laying mechanism 2 can arrange the cables on the cable reel 4 in sequence; the cable pressing mechanism 3 can stably press the arranged cables on the cable reel 4 and also has a full - cable protection function; the cable reel 4 is used for coiling and uncoiling the cables.

[0033] The cable reel lifting mechanism 1 includes a cable reel support 1.1, a cable reel lifting oil cylinder 1.2, a support column 1.3, a clamping mechanism 1.4, a cable reel driving motor 1.5, and a lower limit for the cable arranging support 1.6; the cable reel support 1.1 includes a cross beam, longitudinal beams arranged on both sides of the cross beam, and a vertical beam arranged below the cross beam, and the vertical beam is hinged to the frame of the wheeled working vehicle; both ends of the cable reel lifting oil cylinder 1.2 are respectively hinged to the frame and the cable reel support 1.1, and are used to drive the cable reel support 1.1 to rotate around the hinge point of the frame and the cable reel support 1.1; the support column 1.3 has a telescopic function, and can play a load-bearing role when the cable reel support 1.1 is lifted by the cable reel lifting oil cylinder 1.2, preventing the cable reel lifting oil cylinder 1.2 from releasing pressure and causing the cable reel support 1.1 to fall; two groups of clamping mechanisms 1.4 are oppositely installed on the cable reel support 1.1 and are used to clamp the cable reel 4, and the clamping mechanism 1.4 is driven by the cable reel driving motor 1.5 to rotate; the lower limit for the cable arranging support 1.6 is arranged on the cable reel support 1.1 and is used to support the cable arranging support 2.1.

[0034] The support column 1.3 includes a lower fixed column 1.3.1, a support oil cylinder 1.3.2, an upper telescopic column 1.3.3, a locking buckle 1.3.5, and a buffer rubber pad 1.3.4; the bottom end of the lower fixed column 1.3.1 is fixed to the frame by bolts; the bottom end of the support oil cylinder 1.3.2 is located inside the lower fixed column 1.3.1 and is connected to the lower fixed column 1.3.1, and the top end is located inside the upper telescopic column 1.3.3 and is connected to the upper telescopic column 1.3.3; the locking buckle 1.3.5 is connected to the top end of the lower fixed column 1.3.1 through a hinge; the buffer rubber pad 1.3.4 is fixedly installed at the top end of the upper telescopic column 1.3.3 through countersunk head screws.

[0035] A sealing plate is fixedly installed on the output end of the cable reel driving motor 1.5; the clamping mechanism 1.4 includes a V-shaped plate 1.4.1, a baffle 1.4.2, and a locking pin 1.4.3; the V-shaped plate 1.4.1 is fixed on the sealing plate, the first end is provided with a locking hole I, and the second end is hinged to the first end of the baffle 1.4.2; the baffle 1.4.2 is provided with a limit hole, a connecting ear, and a locking pin mounting seat, the limit hole penetrates through the baffle 1.4.2, two connecting ears are located on both sides of the limit hole, the connecting ears are provided with locking holes II, and the locking pin 1.4.3 is slidably installed on the locking pin mounting seat and is aligned with the locking hole II; the baffle 1.4.2 rotates to sleave the limit hole on the first end of the V-shaped plate 1.4.1, forms a triangular clamping area with the V-shaped plate 1.4.1, the locking hole II is aligned with the locking hole I, and the locking pin 1.4.3 passes through the locking hole II and the locking hole I to achieve locking.

[0036] The cable arranging mechanism 2 includes a cable arranging bracket 2.1, a cable arranging lifting oil cylinder 2.2, a sliding guide rail 2.3, a sliding block 2.4, a cable conveyor 2.5 and a linear motor 2.6; the cable arranging bracket 2.1 is hinged to the cable reel bracket 1.1; both ends of the cable arranging lifting oil cylinder 2.2 are respectively hinged to the cable reel bracket 1.1 and the cable arranging bracket 2.1, and are used for driving the cable arranging bracket 2.1 to rotate around the hinge point of the cable reel bracket 1.1 and the cable arranging bracket 2.1; the sliding guide rail 2.3 is fixedly installed on the cable arranging bracket 2.1 and is parallel to the central axis of the cable reel 4; the sliding block 2.4 is slidably installed on the sliding guide rail 2.3 and is driven by the linear motor 2.6 to slide along the sliding guide rail 2.3; the cable conveyor 2.5 is fixedly installed on the sliding block 2.4 and moves with the sliding block 2.4 to realize the orderly arrangement of the cable on the cable reel 4.

[0037] The cable conveyor 2.5 includes a cable conveyor base 2.5.1, a cable conveyor rubber track Ⅰ 2.5.2, a rotating motor Ⅰ 2.5.3, a cable conveyor rubber track Ⅱ 2.5.4, a rotating motor Ⅱ 2.5.5, a cable conveyor guide rail 2.5.6, a cable conveyor cylinder 2.5.7, a mechanical rocker 2.5.8, a 3D scanner 2.5.9, a decontamination mechanism 2.5.10, and a tension sensor 2.5.11; the cable conveyor base 2.5.1 is fixedly installed on the sliding block 2.4; the cable conveyor rubber track Ⅰ 2.5.2 is fixedly installed on the cable conveyor base 2.5.1 through a track frame Ⅰ and is perpendicular to the central axis of the cable reel 4; the cable conveyor guide rail 2.5.6 is fixed on the cable conveyor base 2.5.1 and is parallel to the central axis of the cable reel 4; the cable conveyor rubber track Ⅱ 2.5.4 is slidably installed on the cable conveyor guide rail 2.5.6 through a track frame Ⅱ and is arranged opposite to the cable conveyor rubber track Ⅰ 2.5.2; the area between the cable conveyor rubber track Ⅰ 2.5.2 and the cable conveyor rubber track Ⅱ 2.5.4 is the cable conveyor area, and the cable conveyor rubber track Ⅰ 2.5.2 and the cable conveyor rubber track Ⅱ 2.5.4 are respectively driven by the rotating motor Ⅰ 2.5.3 and the rotating motor Ⅱ 2.5.5 to rotate synchronously; the cylinder body of the cable conveyor cylinder 2.5.7 is connected to the cable conveyor base 2.5.1, and the piston rod is connected to the track frame Ⅱ; threaded holes are provided on the cable conveyor base 2.5.1; a threaded section is provided on the mechanical rocker 2.5.8, and the threaded section passes through the threaded hole of the cable conveyor base 2.5.1; the first end of the mechanical rocker 2.5.8 is rotatably connected to the track frame Ⅱ, and a crank is provided at the second end; the cable conveyor rubber track Ⅱ 2.5.4 can move in a parallel manner towards or away from the cable conveyor rubber track Ⅰ 2.5.2 along the cable conveyor guide rail 2.5.6 under the action of the cable conveyor cylinder 2.5.7 or the mechanical rocker 2.5.8, so as to apply pressure and relieve pressure on the cable; both the 3D scanner 2.5.9 and the decontamination mechanism 2.5.10 are fixedly installed on the cable conveyor base 2.5.1, on both sides or on the same side of the cable conveyor area. The decontamination mechanism 2.5.10 can remove impurities, dirt, etc. adhered to the cable during the cable winding operation, and the 3D scanner 2.5.9 can feed back the geometric parameters of the wound cable to the electronic control processing unit 28 to adjust the cable laying speed during the cable winding operation of multiple specifications of cables; the tension sensor 2.5.11 is used to monitor the conveying force of the cable. If the limit is exceeded, the cable winding operation needs to be stopped to detect whether there is any jamming in the unwound cable on the ground.

[0038] The cable pressing mechanism 3 includes a cable pressing support 3.1, a cable pressing oil cylinder 3.2, a cable pressing roller 3.3, a cable pressing pressure sensor 3.4 and an angular travel sensor 3.5; the cable pressing support 3.1 is hinged to the cable reel support 1.1; both ends of the cable pressing oil cylinder 3.2 are respectively hinged to the cable reel support 1.1 and the cable pressing support 3.1, and are used to drive the cable pressing support 3.1 to rotate around the hinge point of the cable reel support 1.1 and the cable pressing support 3.1; the cable pressing roller 3.3 is rotatably installed on the cable pressing support 3.1 and is parallel to the central axis of the cable reel 4; the cable pressing pressure sensor 3.4 is fixedly installed on the cable pressing roller 3.3 and can feedback the pressure value of the cable pressing mechanism 3 on the cable in real time; an angular travel sensor 3.5 is installed between the cable pressing support 3.1 and the cable reel support 1.1 and can feedback the relative angle between the two.

[0039] A clamping column 4.1 cooperating with the clamping mechanism 1.4 is arranged at the central position of the cable reel 4. In this embodiment, the clamping column 4.1 is a triangular clamping column and cooperates with the triangular clamping area. A rotational speed sensor 4.2 is fixedly installed on the cable reel 4, and a cable fastening mechanism 4.3 is fixedly installed on the inner wall. The cable fastening mechanism 4.3 can fix the starting end and the terminal end of the cable on the cable reel 4, facilitating cable winding and transportation operations; a bearing pressure sensor 4.4 is fixedly installed on the clamping column 4.1. When the weight of the wound cable exceeds the set value, it can feedback a signal to stop the cable winding work and achieve full cable protection.

[0040] The inlet port of the gear pump 6 is connected to the hydraulic oil tank 5 through the filter 7. The outlet port of the gear pump 6 is respectively connected to the inlet port of the safety valve Ⅰ 8, the P port of the pneumatically controlled on-off valve 9, and the P port of the filling valve 10. The outlet port of the safety valve Ⅰ 8 is connected back to the hydraulic oil tank 5. The A port of the filling valve 10 is connected to the accumulator 11, and the return oil ports T and O are connected back to the hydraulic oil tank 5. The P port of the foot brake valve 12 is connected to the accumulator 11, the A port is connected to the wheel side brake 13, and the T port is connected back to the hydraulic oil tank 5. The inlet port of the check valve Ⅰ is connected to the accumulator 11. The P port of the pneumatically controlled directional valve 14 is connected to the outlet port of the check valve Ⅰ, the A port is connected to the parking brake 15, and the T port is connected back to the hydraulic oil tank 5. The P port of the parking brake valve 16 is connected to the outlet port of the air tank 17, the A port is respectively connected to the control port of the pneumatically controlled on-off valve 9 and the control port of the pneumatically controlled directional valve 14, and the T port is open. The P port of the solenoid directional valve Ⅰ 18 is connected to the A port of the pneumatically controlled on-off valve 9, the A port is connected to the A' port of the double hydraulic lock 19, the B port is connected to the B' port of the double hydraulic lock 19, and the T port is connected back to the hydraulic oil tank 5. The A port of the double hydraulic lock 19 is connected to the rodless cavity of the cable reel lifting oil cylinder 1.2, and the B port is connected to the rod cavity of the cable reel lifting oil cylinder 1.2. The P port of the solenoid directional valve Ⅱ 20 is connected to the A port of the pneumatically controlled on-off valve 9, the A port is connected to the rodless cavity of the support oil cylinder 1.3.2, the B port is connected to the rod cavity of the support oil cylinder 1.3.2, and the T port is connected back to the hydraulic oil tank 5. The P port of the solenoid directional valve Ⅲ 21 is connected to the A port of the pneumatically controlled on-off valve 9, the A port is connected to the A' port of the balance valve Ⅰ 22, the B port is connected to the B' port of the balance valve Ⅰ 22, and the T port is connected back to the hydraulic oil tank 5. The A port of the balance valve Ⅰ 22 is connected to the rodless cavity of the cable discharging and lifting oil cylinder 2.2, and the B port is connected to the rod cavity of the cable discharging and lifting oil cylinder 2.2. The P port of the solenoid directional valve Ⅳ 23 is connected to the A port of the pneumatically controlled on-off valve 9, the A port is connected to the rodless cavity of the cable pressing oil cylinder 3.2, the B port is connected to the rod cavity of the cable pressing oil cylinder 3.2. The P port of the electro-hydraulic proportional valve 24 is connected to the A port of the pneumatically controlled on-off valve 9, the A port is connected to the A' port of the balance valve Ⅱ 25, the B port is connected to the B' port of the balance valve Ⅱ 25, and the T port is connected back to the hydraulic oil tank 5. The A port of the balance valve Ⅱ 25 is connected to the A port of the cable reel driving motor 1.5, and the B port is connected to the B port of the cable reel driving motor 1.5. The P port of the solenoid directional valve Ⅴ 26 is connected to the A port of the pneumatically controlled on-off valve 9, the A port is connected to the brake of the cable reel driving motor 1.5, the B port is blocked, and the T port is connected back to the hydraulic oil tank 5. The P port of the solenoid directional valve Ⅵ 27 is connected to the outlet port of the air tank 17, the A port is connected to the rodless cavity of the cable conveying cylinder 2.5.7, the B port is connected to the rod cavity of the cable conveying cylinder 2.5.7, and the T port is open. The linear motor 2.6, the rotary motor, the 3D scanner 2.5.9, the decontamination mechanism 2.5.10, the tension sensor 2.5.11, the angular travel sensor 3.5, the cable pressing pressure sensor 3.4, the rotational speed sensor 4.2, the bearing pressure sensor 4.4. The electromagnetic directional control valve and the electro-hydraulic proportional valve 24 are both connected to the electronic control unit 28, which is powered by the power supply 29.

[0041] The air compressor 30 is connected to the intake port of the check valve II 31, and the outlet port of the check valve II 31 is connected to the intake port of the air tank 17. A safety valve II 32 and a ball valve 33 are installed on the air tank 17.

[0042] The coordination principle of each module used in the cable coiling (retrieving) operation and the cable feeding (releasing) operation is the same. In this embodiment, the cable coiling (retrieving) operation is taken as an example to introduce the specific implementation method in detail.

[0043] When the above vehicle-mounted cable coiling, arranging, and feeding automation system works, it is required that the vehicle is in a stationary state. The driver steps on the foot brake valve 12 to make the P port and the A port communicate. The hydraulic oil in the accumulator 11 reaches the wheel side brake 13 through the foot brake valve 12, and the vehicle realizes the service brake. Pull up the parking brake valve 16 to make the P port and the A port communicate. The pneumatic directional control valve 14 and the pneumatic on-off valve 9 are pneumatically switched to make the P port and the A port communicate. The hydraulic oil in the accumulator 11 reaches the parking brake 15 through the pneumatic directional control valve 14 to realize the parking brake and ensure that the vehicle is in a stable stop state.

[0044] By remotely controlling or manually operating the electronic control unit 28 to control the electromagnetic directional control valve III 21 to change the direction, making the P port and the A port communicate. The hydraulic oil output by the gear pump 6 reaches the rodless cavity of the cable arranging lifting oil cylinder 2.2 through the pneumatic on-off valve 9, the electromagnetic directional control valve III 21, and the balance valve I 22, so that the piston rod of the cable arranging lifting oil cylinder 2.2 extends. The cable arranging support 2.1 rotates upward from the lower limit position 1.6 of the cable arranging support until the cable arranging lifting oil cylinder 2.2 reaches the upper limit position and stops, and under the action of the balance valve I 22, it maintains the lifting state. At this time, the cable arranging support 2.1 is higher than the maximum height of the cable reel 4, which is convenient for the cable reel 4 to pass through below the cable arranging support 2.1 and be connected to the cable reel support 1.1. The cable reel 4 is connected to the clamping mechanism 1.4 through the clamping column 4.1, and the clamping mechanism 1.4 can rotate under the drive of the cable reel drive motor 1.5, so as to realize the rotation of the cable reel 4. After the cable reel 4 is connected to the cable reel support 1.1, the electronic control unit 28 is used to control the electromagnetic directional control valve III 21 to change the direction, making the P port and the B port communicate. The cable arranging lifting oil cylinder 2.2 lowers the cable arranging support 2.1 to the lower limit position 1.6 of the cable arranging support, and returns to the initial position.

[0045] The electromagnetic reversing valve I 18 is controlled to reverse by remote control or manual operation of the electronic control processing unit 28, so that the P port and the A port are communicated. The hydraulic oil output by the gear pump 6 reaches the rodless cavity of the cable reel lifting oil cylinder 1.2 through the pneumatic on-off valve 9, the electromagnetic reversing valve I 18 and the double hydraulic lock 19, causing the piston rod of the cable reel lifting oil cylinder 1.2 to extend, and the cable reel bracket 1.1 to rotate upward until the cable reel lifting oil cylinder 1.2 reaches the upper limit position and stops, and remains stationary under the action of the double hydraulic lock 19. At this time, the cross beam of the cable reel bracket 1.1 is parallel to the vehicle frame. At the same time, in order to avoid damage to the cable reel lifting oil cylinder 1.2 caused by impacts such as bumps during vehicle transportation, the electronic control processing unit 28 controls the electromagnetic reversing valve II 20 to reverse, so that the P port and the A port are communicated. The hydraulic oil output by the gear pump 6 reaches the rodless cavity of the support oil cylinder 1.3.2 through the pneumatic on-off valve 9 and the electromagnetic reversing valve II 20, causing the piston rod of the support oil cylinder 1.3.2 to extend, lifting the upper telescopic column 1.3.3 until the buffer rubber pad 1.3.4 contacts the longitudinal beams on both sides of the cable reel bracket 1.1. After reaching the support position, the lock catch 1.3.5 is flipped through the hinge to the position between the upper telescopic column 1.3.3 and the lower fixed column 1.3.1 to play a reliable locking role.

[0046] Pass the cable through the cable feeding area of the cable feeder 2.5, and fix the end on the cable reel 4 through the cable fastening mechanism 4.3. Control the electromagnetic directional valve VI 27 to change the direction by remote control or manual operation of the electronic control processing unit 28, so that the P port and the A port are connected. The gas in the gas tank 17 enters the rodless cavity of the cable feeding cylinder 2.5.7 through the electromagnetic directional valve VI 27, causing the piston rod of the cable feeding cylinder 2.5.7 to extend, and pushing the cable feeding rubber track II 2.5.4 to move in parallel in the opposite direction along the cable feeding guide rail 2.5.6 and the cable feeding rubber track I 2.5.2 to press the cable. In addition, if necessary, the cable feeding rubber track II 2.5.4 can also be pushed to press by the mechanical rocker 2.5.8. The electronic control processing unit 28 starts the synchronous operation of the rotary motor I 2.5.3 and the rotary motor II 2.5.5, driving the cable feeding rubber track I 2.5.2 and the cable feeding rubber track II 2.5.4 to convey the clamped cable to the cable reel 4. The electronic control processing unit 28 controls the electromagnetic directional valve V 26 and the electro-hydraulic proportional valve 24 to change the direction, so that the P port and the A port are connected. The hydraulic oil output by the gear pump 6 passes through the pneumatic on-off valve 9 and the electromagnetic directional valve V 26 to release the brake of the cable reel drive motor 1.5. The hydraulic oil output by the gear pump 6 passes through the pneumatic on-off valve 9, the electro-hydraulic proportional valve 24 and the balance valve II 25 and enters the A port of the cable reel drive motor 1.5, causing the cable reel drive motor 1.5 to rotate forward for cable winding. At the same time, the electronic control processing unit 28 determines the cable laying stroke and speed according to the cable diameter parameter fed back by the 3D scanner 2.5.9 and in combination with the width of the cable reel 4, that is, the moving stroke and speed of the sliding block 2.4 along the sliding guide rail 2.3 driven by the linear motor 2.6. The speed sensor 4.2 of the cable reel 4 feeds its speed signal back to the electronic control processing unit 28, and the electronic control processing unit 28 dynamically adjusts the opening amount of the spool of the electro-hydraulic proportional valve 24 to ensure the coordinated operation of the cable winding speed and the cable laying speed, and realize the orderly arrangement of the cable.

[0047] During the cable winding process, the electronic control processing unit 28 controls the cable pressing oil cylinder 3.2 and the cable pressing bracket 3.1 to press the cable in real time through the electromagnetic directional valve IV 23, avoiding the looseness and mess caused by the cable loosening during the cable winding process. Among them, the cable pressing oil cylinder 3.2 has a follow-up function and can adjust the stroke at any time according to the change of the outer diameter of the cable winding disc.

[0048] The above vehicle-mounted cable coiling, arranging and feeding automation system has a safety protection function: the electronic control processing unit 28 receives the signal value of the angular travel sensor 3.5 in real time. When the angular travel of the cable pressing bracket 3.1 reaches the maximum set value, the cable coiling operation is stopped, and a prompt is issued through the voice alarm device to prevent the cable height from exceeding the cable reel height of the cable reel 4, that is, physical full cable protection; the electronic control processing unit 28 receives the signal value of the bearing pressure sensor 4.4 in real time. When the maximum set pressure value is reached, it means that the cable weight reaches the specified load, the cable coiling operation is stopped, and a prompt is issued through the voice alarm device to prevent special high-density cables from exceeding the set bearing capacity and causing damage to the cable reel lifting mechanism 1 and the cable reel 4, that is, bearing full cable protection; the tension sensor 2.5.11 can monitor the cable conveying force of the cable conveyor 2.5 in real time. If it exceeds the set limit, the cable coiling operation is stopped, and a prompt is issued through the voice alarm device to check whether the unreeled cable on the ground is stuck, so as to avoid damage to the cable conveyor 2.5.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An on-vehicle cable coiling, discharging and feeding automation system, characterized in that, It includes a wheeled working vehicle, a cable reel lifting mechanism, a cable arranging mechanism, a cable pressing mechanism, a cable reel, a gear pump, a pneumatically controlled on-off valve, a parking brake valve, an air tank, an electromagnetic reversing valve I, a two-way hydraulic lock, an electromagnetic reversing valve III, a balance valve I, an electromagnetic reversing valve IV, an electro-hydraulic proportional valve, a balance valve II, and an electronic control processing unit; The cable reel lifting mechanism includes a cable reel support, a cable reel lifting oil cylinder, a clamping mechanism, and a cable reel driving motor; The cable reel support is hinged to the frame of the wheeled working vehicle; Both ends of the cable reel lifting oil cylinder are respectively hinged to the frame and the cable reel support; Two sets of clamping mechanisms are oppositely installed on the cable reel support for clamping the cable reel, and the clamping mechanism is driven by the cable reel driving motor to rotate; The cable arranging mechanism includes a cable arranging support, a cable arranging lifting oil cylinder, a sliding guide rail, a sliding block, a cable conveyor, and a linear motor; The cable arranging support is hinged to the cable reel support; Both ends of the cable arranging lifting oil cylinder are respectively hinged to the cable reel support and the cable arranging support; The sliding guide rail is fixedly installed on the cable arranging support and is parallel to the central axis of the cable reel; The sliding block is slidably installed on the sliding guide rail and is driven by the linear motor to slide along the sliding guide rail; The cable conveyor is fixedly installed on the sliding block; The cable pressing mechanism includes a cable pressing support, a cable pressing oil cylinder, and a cable pressing roller; The cable pressing support is hinged to the cable reel support; Both ends of the cable pressing oil cylinder are respectively hinged to the cable reel support and the cable pressing support; The cable pressing roller is rotatably installed on the cable pressing support and is parallel to the central axis of the cable reel; A clamping column for cooperating with the clamping mechanism is arranged at the central position of the cable reel; The oil outlet of the gear pump is connected to the P port of the pneumatically controlled on-off valve; The P port of the parking brake valve is connected to the air outlet of the air tank, the A port is connected to the control port of the pneumatically controlled on-off valve, and the T port is open; The P port of the electromagnetic reversing valve I is connected to the A port of the pneumatically controlled on-off valve, the A port is connected to the A' port of the two-way hydraulic lock, the B port is connected to the B' port of the two-way hydraulic lock, and the T port is connected back to the hydraulic oil tank; The A port of the two-way hydraulic lock is connected to the rodless cavity of the cable reel lifting oil cylinder, and the B port is connected to the rod cavity of the cable reel lifting oil cylinder; The P port of the electromagnetic reversing valve III is connected to the A port of the pneumatically controlled on-off valve, the A port is connected to the A' port of the balance valve I, the B port is connected to the B' port of the balance valve I, and the T port is connected back to the hydraulic oil tank; The A port of the balance valve I is connected to the rodless cavity of the cable arranging lifting oil cylinder, and the B port is connected to the rod cavity of the cable arranging lifting oil cylinder; The P port of the electromagnetic reversing valve IV is connected to the A port of the pneumatically controlled on-off valve, the A port is connected to the rodless cavity of the cable pressing oil cylinder, and the B port is connected to the rod cavity of the cable pressing oil cylinder; The P port of the electro-hydraulic proportional valve is connected to the A port of the pneumatically controlled on-off valve, the A port is connected to the A' port of the balance valve II, the B port is connected to the B' port of the balance valve II, and the T port is connected back to the hydraulic oil tank; The A port of the balance valve II is connected to the A port of the cable reel driving motor, and the B port is connected to the B port of the cable reel driving motor; The control ports of the linear motor, the electromagnetic reversing valve, and the electro-hydraulic proportional valve are all connected to the electronic control processing unit.

2. The vehicle-mounted cable coiling, discharging and feeding automation system according to claim 1, characterized in that, It also includes an electromagnetic reversing valve V; The P port of the electromagnetic directional valve V is connected to the A port of the pneumatic on-off valve, the A port is connected to the brake of the cable reel driving motor, the B port is blocked, and the T port is connected back to the hydraulic oil tank.

3. The vehicle-mounted cable coiling, discharging and feeding automation system according to claim 1, characterized in that, The cable reel lifting mechanism further includes a support column and an electromagnetic directional valve II; The support column includes a lower fixed column, a support oil cylinder, an upper telescopic column, a latch, and a buffer rubber pad; The bottom end of the lower fixed column is fixed on the vehicle frame; The bottom end of the support oil cylinder is located inside the lower fixed column and connected to the lower fixed column, and the top end is located inside the upper telescopic column and connected to the upper telescopic column; The latch is connected to the top end of the lower fixed column through a hinge; The buffer rubber pad is fixedly installed at the top end of the upper telescopic column; The control port of the electromagnetic directional valve II is connected to the electronic control processing unit, the P port is connected to the A port of the pneumatic on-off valve, the A port is connected to the rodless cavity of the support oil cylinder, the B port is connected to the rod cavity of the support oil cylinder, and the T port is connected back to the hydraulic oil tank.

4. The vehicle-mounted cable coiling, discharging and feeding automation system according to claim 1, wherein, A sealing plate is fixedly installed on the output end of the cable reel driving motor; The clamping mechanism includes a V-shaped plate, a baffle, and a locking pin; The V-shaped plate is fixed on the sealing plate, the first end is provided with a locking hole I, and the second end is hinged to the first end of the baffle; the baffle is provided with a limiting hole, a connecting ear, and a locking pin mounting seat. The limiting hole penetrates through the baffle, and two connecting ears are located on both sides of the limiting hole. The connecting ear is provided with a locking hole II, and the locking pin is slidably installed on the locking pin mounting seat and aligned with the locking hole II; The baffle rotates so that the limiting hole is sleeved on the first end of the V-shaped plate, forming a triangular clamping area with the V-shaped plate, and the locking hole II is aligned with the locking hole I; The clamping column is a triangular clamping column, which cooperates with the triangular clamping area; A lower limit for the cable arranging support is provided on the cable reel support.

5. The vehicle-mounted cable coiling, discharging, and feeding automation system according to claim 1, wherein, The cable conveyor includes a cable conveying base, a cable conveying rubber track I, a rotating motor I, a cable conveying rubber track II, a rotating motor II, a cable conveying guide rail, a cable conveying cylinder, and an electromagnetic directional valve VI; The cable conveying base is fixedly installed on the sliding block; The cable conveying rubber track I is fixedly installed on the cable conveying base through a track frame I, perpendicular to the central axis of the cable reel; The cable conveying guide rail is fixed on the cable conveying base, parallel to the central axis of the cable reel; The cable conveying rubber track II is slidably installed on the cable conveying guide rail through a track frame II, opposite to the cable conveying rubber track I; The area between the cable conveying rubber track I and the cable conveying rubber track II is the cable conveying area, and the cable conveying rubber track I and the cable conveying rubber track II are respectively driven by the rotating motor I and the rotating motor II to rotate synchronously; The control ports of the rotating motor I and the rotating motor II are connected to the electronic control processing unit; The cylinder body of the cable conveying cylinder is connected to the cable conveying base, and the piston rod is connected to the track frame II; The control port of the electromagnetic directional valve VI is connected to the electronic control processing unit, the P port is connected to the air outlet of the air tank, the A port is connected to the rodless cavity of the cable conveying cylinder, the B port is connected to the rod cavity of the cable conveying cylinder, and the T port is open.

6. The vehicle-mounted cable coiling, discharging and feeding automation system according to claim 5, characterized in that, The cable conveyor further includes a mechanical rocker; The cable conveying base is provided with a threaded hole; The mechanical rocker is provided with a threaded section, and the threaded section passes through the threaded hole of the cable conveying base; The first end of the mechanical rocker is rotatably connected to the track frame II, and the second end is provided with a crank; 7. The vehicle-mounted cable coiling, discharging and feeding automation system according to claim 5 or 6, characterized in that, The cable conveyor further includes a 3D scanner, a decontamination mechanism, and a tension sensor; The 3D scanner and the decontamination mechanism are both fixedly installed on the cable conveying base, on both sides of the cable conveying area or on the same side of the cable conveying area; The tension sensor is used to monitor the conveying force of the cable; The 3D scanner, the decontamination mechanism, and the tension sensor are all connected to the electronic control processing unit.

8. The on-vehicle cable coiling, discharging and feeding automation system according to claim 1, wherein An angular travel sensor is installed between the cable pressing bracket and the cable reel bracket; A cable pressing pressure sensor is fixedly installed on the cable pressing roller; The angular travel sensor and the cable pressing pressure sensor are both connected to the electronic control processing unit.

9. The vehicle-mounted cable coiling, discharging and feeding automation system according to claim 1, wherein, A rotational speed sensor is fixedly installed on the cable reel, and a cable fastening mechanism is fixedly installed on the inner wall; A load-bearing pressure sensor is fixedly installed on the clamping column; The rotational speed sensor and the load-bearing pressure sensor are both connected to the electronic control processing unit.

10. The vehicle-mounted cable coiling, discharging, and feeding automation system according to claim 1, characterized in that, It further includes a liquid filling valve, an accumulator, a foot brake valve, a wheel side brake, a pneumatic control reversing valve, a parking brake, an air compressor, a check valve II, a safety valve II, and a ball valve; The oil outlet of the gear pump is respectively connected to the oil inlet of the safety valve I, the P port of the pneumatic control on-off valve, and the P port of the liquid filling valve; The oil outlet of the safety valve I is connected back to the hydraulic oil tank; The A port of the liquid filling valve is connected to the accumulator, and the return oil port T and the return oil port O are connected back to the hydraulic oil tank; The P port of the foot brake valve is connected to the accumulator, the A port is connected to the wheel side brake, and the T port is connected back to the hydraulic oil tank; the P port of the pneumatic control reversing valve is connected to the accumulator, the A port is connected to the parking brake, and the T port is connected back to the hydraulic oil tank; the A port of the parking brake valve is respectively connected to the control port of the pneumatic control on-off valve and the control port of the pneumatic control reversing valve; the air compressor is connected to the intake port of the check valve II, the outlet port of the check valve II is connected to the intake port of the air tank, and a safety valve II and a ball valve are installed on the air tank.

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