Bidirectional driving mining electric trackless rubber-tyred vehicle

Abstract

The utility model belongs to the technical field of mining vehicles, and particularly discloses a bi-directional driving mining electric trackless rubber-tyred vehicle which is characterized in that a main cab and an auxiliary cab are respectively arranged at the front end and the rear end of a frame assembly, and a main steering device arranged in the main cab and an auxiliary steering device arranged in the auxiliary cab are connected with a steering oil cylinder of the same front axle assembly through hydraulic pipelines. The driving mode switching device is used for controlling steering of front wheels and comprises a two-position three-way valve, and the two-position three-way valve is installed on a hydraulic pipeline between a hydraulic pump and a steering device and used for switching a main driving mode and a co-driving mode of a vehicle. When switching to the main driving mode, the steering operation is controlled by the main steering device, and when switching to the co-driving mode, the steering operation is controlled by the sub-steering device. The two-way driving trackless rubber-tyred vehicle solves the problem that a rear wheel dragging phenomenon occurs during turning in a double-head full-control scheme of an existing two-way driving trackless rubber-tyred vehicle, and further solves the problem that safety locking is lacked between operation control systems at the two ends of the existing two-way driving trackless rubber-tyred vehicle.

Description

TECHNICAL FIELD

[0001] The utility model relates to mining vehicle technical field, especially a kind of two-way driving mining electric trackless rubber-tyred vehicle. BACKGROUND

[0002] At present, in coal mine and other mines, trackless rubber-tyred vehicle is usually used to transport personnel, materials and equipment. Trackless rubber-tyred vehicle is a kind of transport vehicle used in mines and other special places, which has no track but uses rubber tires to run on the ground. However, the traditional trackless rubber-tyred vehicle can only be driven in one direction, which limits the flexibility of vehicle use in some cases. Due to the narrow coal mine roadway, the equipment is arranged on both sides, the auxiliary transportation is difficult, only narrow vehicle can be used, and there is no turning chamber, the light is dim, the image clarity of reversing is poor, the reversing is difficult, unsafe and inconvenient; the driver has good vision in front of the cab, and driving is safe and convenient. Therefore, it is necessary to develop a two-way driving vehicle. There are several schemes for the current two-way driving vehicle: a double-head full-control scheme; a scheme with a steering wheel in the middle, changing the sitting direction of the driver; a scheme with side control of direction, changing the sitting direction of the driver; a side driving two-way driving scheme, etc. Among them, the most typical two-way driving vehicle scheme is the double-head full-control scheme, that is, two heads adopt two sets of identical operation control systems including two sets of steering mechanisms. However, the double-head full-control scheme of the existing two-way driving trackless rubber-tyred vehicle has the following problems: 1. During normal operation, one of the two steering mechanisms is passively locked, and the rear wheel is locked for straight driving, which may cause the rear wheel to drag during turning; 2. There is a lack of safety locking between the two operation control systems, and the safety cannot meet the needs of coal mine users. CONTENT OF THE UTILITY MODEL

[0003] The utility model provides a kind of two-way driving mining electric trackless rubber-tyred vehicle to solve the problem of rear wheel dragging during turning of the double-head full-control scheme of the existing two-way driving trackless rubber-tyred vehicle, and further solve the problem of lack of safety locking between the two operation control systems.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] A kind of two-way driving mining electric trackless rubber-tyred vehicle, comprising:

[0006] A main cab and a vice cab are respectively installed at the front end and the rear end of the frame assembly;

[0007] Front wheels and rear wheels are respectively installed at the front and rear of the frame assembly through front axle assemblies and rear axle assemblies;

[0008] The steering device comprises a main steering device installed in the main cab and a sub steering device installed in the sub cab, and the main steering device and the sub steering device are connected with the steering cylinder of the same front axle assembly through hydraulic pipelines for controlling the steering of the front wheels.

[0009] The hydraulic oil tank and the hydraulic pump are installed on the frame assembly, and the hydraulic pump is connected with the steering device through the hydraulic pipeline for providing hydraulic power for the steering device.

[0010] The driving mode switching device comprises a two-position three-way valve installed on the hydraulic pipeline between the hydraulic pump and the steering device for switching the main driving mode and the sub driving mode of the vehicle.

[0011] The steering of the vehicle in the main driving mode and the sub driving mode is performed by the same front axle assembly, when the spool of the two-position three-way valve is switched to the working position corresponding to the main driving mode, the two-position three-way valve makes the hydraulic oil output by the hydraulic pump flow to the main steering device to realize the control at the main cab end, and when the spool of the two-position three-way valve is switched to the working position corresponding to the sub driving mode, the two-position three-way valve makes the hydraulic oil output by the hydraulic pump flow to the sub steering device to realize the control at the sub cab end.

[0012] Further, the bidirectional driving mine electric trackless rubber-tyred vehicle further has a two-way liquid filling valve, the oil outlet of the hydraulic pump is directly or indirectly connected with the oil inlet of the two-way liquid filling valve, and the oil outlets of the two-way liquid filling valve are respectively connected with the steering device and the braking system device through hydraulic pipelines for providing hydraulic power for the steering device and the braking system device.

[0013] Further, the main steering device comprises a main steering wheel, a main steering column and a main steering gear, the main steering wheel is connected with the main steering gear through the main steering column, and the main steering gear is connected with the steering cylinder of the front axle assembly through two hydraulic pipelines in which hydraulic control check valves are installed; the sub steering device comprises a sub steering wheel, a sub steering column and a sub steering gear, the sub steering wheel is connected with the sub steering gear through the sub steering column, and the sub steering gear is connected with the steering cylinder of the front axle assembly through two hydraulic pipelines in which hydraulic control check valves are installed.

[0014] Further, the bidirectional driving mine electric trackless rubber-tyred vehicle further has a power battery assembly, an electric vehicle electric control device, a first driving motor, a transfer case, a front transmission shaft assembly, a rear transmission shaft assembly and a second driving motor, the first driving motor and the second driving motor are both explosion-proof motors, the power battery assembly, the electric vehicle electric control device, the first driving motor, the transfer case and the second driving motor are all mounted on the vehicle frame assembly, the power battery assembly is connected with the electric vehicle electric control device through a cable, the electric vehicle electric control device is connected with the first driving motor and the second driving motor through a cable, a power output shaft of the first driving motor is connected with an input shaft of the transfer case, a front output shaft of the transfer case is connected with the front wheels through the front transmission shaft assembly and the front axle assembly, a rear output shaft of the transfer case is connected with the rear wheels through the rear transmission shaft assembly and the rear axle assembly, and a power output shaft of the second driving motor is connected with the hydraulic pump.

[0015] Further, the main driver's cabin and the auxiliary driver's cabin are both provided with an accelerator pedal, a brake pedal and an emergency stop button, the brake pedal in the main driver's cabin and the brake pedal in the auxiliary driver's cabin are connected in parallel with each other on a hydraulic pipeline for service braking, an explosion-proof electromagnetic reversing valve is installed on a branch hydraulic return circuit of a hydraulic oil return tank in a parking cavity of a fail-safe rear wheel brake, a coil of the explosion-proof electromagnetic reversing valve is connected in series with an auxiliary power supply and the emergency stop buttons respectively arranged in the main driver's cabin and the auxiliary driver's cabin, after the emergency stop button in the main driver's cabin or the auxiliary driver's cabin is pressed, the coil of the explosion-proof electromagnetic reversing valve is powered off, a valve core is returned, the hydraulic oil in the parking cavity of the fail-safe rear wheel brake returns to the hydraulic oil return tank through the explosion-proof electromagnetic reversing valve, the fail-safe rear wheel brake is de-pressurized and braked, and the rear wheels stop rotating; in normal working condition, the coil of the explosion-proof electromagnetic reversing valve is powered on, and the branch hydraulic return circuit of the hydraulic oil return tank through the explosion-proof electromagnetic reversing valve is closed. The accelerator pedals in the main driver's cabin and the auxiliary driver's cabin are independent of each other, and only the accelerator pedal in the driver's cabin at one end in a driving mode is effective; the brake pedals and the emergency stop buttons in the main driver's cabin and the auxiliary driver's cabin can be independently operated, and the operation is effective regardless of whether the driver's cabin at one end is in the driving mode, thereby ensuring safety.

[0016] Further, the bidirectional driving mine electric trackless rubber-tyred vehicle further has a vehicle cabin assembly, the vehicle cabin assembly is mounted on the vehicle frame assembly and located between the main driver's cabin and the auxiliary driver's cabin.

[0017] Preferably, the power battery assembly is an explosion-proof lithium ion battery power supply.

[0018] Further, the observation window of the auxiliary driver's cabin is a transparent display screen capable of displaying vehicle running information, so that a driver can directly observe the vehicle running information through the display screen.

[0019] Preferably, the hydraulic pump is a double linkage gear pump.

[0020] Further, the bidirectional driving mine electric trackless rubber-tyred vehicle further has a front leaf spring and a rear leaf spring, the front axle assembly is installed at the front of the vehicle frame assembly through the front leaf spring, and the rear axle assembly is installed at the rear of the vehicle frame assembly through the rear leaf spring.

[0021] Further, the bidirectional driving mine electric trackless rubber-tyred vehicle further has a front bumper assembly, a battery waterproof cover, a front headlamp assembly, a rear tail lamp assembly, a rearview mirror assembly, a fire extinguisher, a front trailer hook, a rear trailer hook, a subframe, an acceleration pedal and a brake pedal.

[0022] Compared with the prior art, the bidirectional driving mine electric trackless rubber-tyred vehicle has the following beneficial effects:

[0023] 1) The same set of steering mechanisms is used to realize steering in the main driver mode (forward driving) and the vice driver mode (reverse driving), which not only solves the problem that the rear wheels are dragged when turning in the double-head full control scheme of the existing bidirectional driving trackless rubber-tyred vehicle, but also effectively saves the configuration materials and costs, and facilitates switching control; the steering control operation mode of the vice steering device is consistent with that of the main steering device, and the original steering axle is still controlled.

[0024] 2) Further, the brake pedals and the emergency stop buttons of the main and vice driver sets of brake control systems can be independently operated and are all effective, which ensures safety and solves the problem that there is a lack of safety locking between the two sets of operation control systems in the double-head full control scheme of the existing bidirectional driving trackless rubber-tyred vehicle.

[0025] 3) When the coal mine underground roadway is not good for turning, the vehicle can be driven from the vice driver room end, so that the driver has a better view, the driving is safer and more convenient, the problems of poor back image clarity, difficult back driving, insecurity and inconvenience of the single-direction driving vehicle when reversing are solved, the vehicle can be conveniently turned in the coal mine underground roadway, and the flexibility, passability and use safety of the vehicle are improved.

[0026] 4) Electric driving is adopted, low noise, no emission, environmental protection, energy saving and low operation cost. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a main structure block diagram of the bidirectional driving mine electric trackless rubber-tyred vehicle of the embodiment of the utility model;

[0028] Figure 2 It is a schematic view of the hydraulic system of the bidirectional driving mine electric trackless rubber-tyred vehicle of the embodiment of the utility model;

[0029] Figure 3 It is a whole structure main view schematic view of the bidirectional driving mine electric trackless rubber-tyred vehicle of the embodiment of the utility model;

[0030] Figure 4 It is the bottom view schematic diagram of the chassis structure of the bidirectional driving mine electric trackless rubber-tyred vehicle of the utility model embodiment;

[0031] Figure 5 It is the bottom view schematic diagram of the front axle assembly of the bidirectional driving mine electric trackless rubber-tyred vehicle of the utility model embodiment;

[0032] Figure 6 It is the left view schematic diagram of the bidirectional driving mine electric trackless rubber-tyred vehicle of the utility model embodiment;

[0033] Figure 7 It is the right view schematic diagram of the bidirectional driving mine electric trackless rubber-tyred vehicle of the utility model embodiment.

[0034] In the drawing,

[0035] 10, vehicle frame assembly;

[0036] 11, main driver room;111, main steering device;12, deputy driver room;121, deputy steering device;

[0037] 13, front axle assembly;131, steering connecting plate;132, steering knuckle seat;133, steering knuckle;134, front wheel mounting disc;14, rear axle assembly;

[0038] 15, hydraulic system;151, hydraulic oil tank;152, hydraulic pump;153, second drive motor;154, high pressure oil filter;155, double-path liquid filling valve;156, two-position three-way valve;157, hand-operated pressure pump;158, energy accumulator;159, pedal valve;1510, shuttle valve;1511, front wheel brake;1512, rear wheel brake;1513, pressure controller;1514, shock-proof pressure gauge;1515, reverse parking brake valve;1516, shock-proof pressure gauge;1517, main steering gear, 1518, hydraulic control check valve;1519, steering oil cylinder;1520, deputy steering gear, 1521, two-position three-way valve;1522, monostable valve;1523, overflow valve;1524, explosion-proof electromagnetic reversing valve;

[0039] 16, first drive motor;17, brake system;18, power battery assembly;19, electric vehicle electronic control device;20, front trailer hook;21, front bumper assembly;22, battery waterproof cover;23, carriage assembly;24, deputy vehicle frame;25, rear tail lamp assembly;26, rear trailer hook;27, rear wheel;28, rear leaf spring;29, fire extinguisher;30, rear transmission shaft assembly;31, front wheel;32, front leaf spring;33, rearview mirror assembly;34, front headlamp assembly. DETAILED DESCRIPTION

[0040] The utility model discloses a further illustrate the specific embodiment of the utility model below with the drawings.

[0041] As Figures 1 to 7 The two-way driving mine electric trackless rubber-tyred vehicle of the embodiment mainly comprises a frame assembly 10, a main driver's cabin 11 and a vice driver's cabin 12 arranged at the front end and the rear end of the frame assembly 10 respectively, and further comprises a front axle assembly 13, a rear axle assembly 14, a hydraulic system 15, a first driving motor 16, a braking system 17, a power battery assembly 18, an electric vehicle electric control device 19 and the like.

[0042] Among them: the main driver's cabin 11 and the vice driver's cabin 12 are both provided with an accelerator pedal, a brake pedal, a driving mode switching device and a main steering device or a vice steering device, the front axle assembly 13 is provided with a front wheel, the rear axle assembly 14 is provided with a rear wheel, the hydraulic system 15 comprises a hydraulic oil tank 151, a hydraulic pump 152 and a hydraulic control valve and the like, the braking system 17 comprises a running brake system and a parking brake system, and the power battery assembly 18 adopts an explosion-proof design.

[0043] The driving mode switching device arranged in the main driver's cabin 11 and the vice driver's cabin 12 is used for realizing the switching of the main and vice driving modes, and the main steering device and the vice steering device both control the steering of the front wheel through the steering mechanism (i.e. the same set of steering mechanism) of the front axle assembly 13.

[0044] The main structure is explained as follows:

[0045] 1, the front axle assembly 13:

[0046] The front axle assembly 13 is a main component for bearing the steering function. The front axle assembly 13 is provided with a steering mechanism, and the steering mechanism comprises a steering oil cylinder 1519, an intermediate connecting plate, a steering connecting plate 131, a rotating shaft and a steering knuckle 133. The steering oil cylinder 1519 is installed at the front end of the front axle, the piston rod of the steering oil cylinder 1519 is hinged to one end of the intermediate connecting plate, the other end of the intermediate connecting plate is hinged to one end of the steering connecting plate 131, the other end of the steering connecting plate 131 is fixedly connected with the rotating shaft that is vertically installed in the hinged hole of the steering knuckle seat 132 of the front axle, one end of the steering knuckle 133 is fixedly connected with the rotating shaft, and the other end of the steering knuckle 133 is fixedly connected with a front wheel mounting disc 134. The rotation of the steering connecting plate 131 is realized through the action of the steering oil cylinder, and then the deflection of the steering knuckle 133 and the front wheel 31 is controlled.

[0047] The main steering device 111 is located in the main driver's cabin 11 and comprises a main steering wheel, a main steering column and a main steering gear 1517. The main steering wheel is connected with the main steering gear 1517 through the main steering column, and the main steering gear 1517 is connected with the steering oil cylinder 1519 through two hydraulic lines in which hydraulic control check valves 1518 are installed.

[0048] The auxiliary steering device 121 is similar in structure to the main steering device, but is located in the auxiliary cab 12 and includes an auxiliary steering wheel, an auxiliary steering column and an auxiliary steering gear 1520. The auxiliary steering wheel is connected to the auxiliary steering gear 1520 through the auxiliary steering column. The auxiliary steering gear 1520 is connected to the steering oil cylinder 1519 through two hydraulic lines in which hydraulic control check valves 1518 are installed.

[0049] The driving mode switching device includes a two-position three-way valve 1521, which is located in the hydraulic line and is used to switch the flow direction of the hydraulic oil to the main steering gear 1517 or the auxiliary steering gear 1520, thereby realizing the conversion of the main and auxiliary driving modes. When the driver switches the spool of the two-position three-way valve 1521 to the working position corresponding to the main driving mode, the two-position three-way valve 1521 guides the hydraulic oil to the main steering gear 1517. The driver in the main cab 11 can control the steering of the front wheels by rotating the main steering wheel to rotate the spool of the main steering gear 1517, so that the hydraulic oil flows into one side of the piston in the steering oil cylinder 1519 through one of the two hydraulic lines in which the hydraulic control check valves 1518 are installed, and the hydraulic oil on the other side of the piston in the steering oil cylinder 1519 flows back to the oil tank through the other of the two hydraulic lines in which the hydraulic control check valves 1518 are installed and the main steering gear 1517. At the same time, the piston rod of the steering oil cylinder 1519 extends or retracts accordingly, thereby realizing the steering of the front wheels. When the driver switches the spool of the two-position three-way valve 1521 to the working position corresponding to the auxiliary driving mode, the two-position three-way valve 1521 guides the hydraulic oil to the auxiliary steering gear 1520. The driver in the auxiliary cab 12 can control the steering of the front wheels by the auxiliary steering wheel.

[0050] 2. Hydraulic system 15

[0051] The hydraulic system 15 mainly realizes the following functions: service braking, parking braking, power steering, stable pressure, two-way switching, manual brake release and the like.

[0052] The structure includes:

[0053] The hydraulic oil tank 151 is located at a proper position of the frame assembly 10 (for example, the outer side of the middle part of the frame assembly 10) and is used to store the hydraulic oil required for the operation of the hydraulic system.

[0054] The hydraulic pump 152 is a double linkage gear pump in this embodiment, is installed near the hydraulic oil tank 151 and is driven by the second driving motor 153 connected thereto to provide hydraulic power for the hydraulic system 15.

[0055] The hydraulic line: Three main hydraulic lines are branched from the two-way filling valve 155 and lead to the steering devices and the braking devices on the main driving side and the auxiliary driving side.

[0056] Hydraulic control valve: necessary hydraulic control valves are arranged on the hydraulic pipeline, such as two-position three-way valve 1521. The two-position three-way control valve 1521 is installed on the hydraulic pipeline between the hydraulic pump 152 and the steering device, which is used to switch the hydraulic oil flow to the main steering device or the auxiliary steering device. When the driving mode needs to be switched, the driver can quickly switch the main and auxiliary driving modes by rotating the operation handle connected to the two-position three-way valve 1521 to another working position.

[0057] Steering oil cylinder 1519: arranged on the front axle assembly 13, when the bidirectional driving mine electric trackless rubber-tyred vehicle of the embodiment needs to turn left or right, the piston rod of the steering oil cylinder 1519 moves left or right under the action of hydraulic oil, thereby pushing the steering connecting plate 131 and the steering knuckle 133 to turn left or right, and in turn driving the front wheels to deflect left or right.

[0058] Referring to Figure 2 The main structure and working principle of the hydraulic system 15 of the bidirectional driving mine electric trackless rubber-tyred vehicle of the embodiment are as follows:

[0059] (1) The hydraulic pump 152 sucks hydraulic oil from the hydraulic oil tank 151 under the drive of the second drive motor 153, the hydraulic oil discharged by the hydraulic pump 152 is filtered and pressurized by the high-pressure oil filter 154 to reach the standard pressure of 12-15 MPa, and the working pressure is maintained; the hydraulic oil filtered and pressurized by the high-pressure oil filter 154 passes through the double-path filling valve 155, the first path controls the flow of the monostable valve 1522, and then the two-position three-way valve 1521 provides hydraulic pressure to the main steering device main steering gear 1517 or the auxiliary steering device auxiliary steering gear 1520, which plays a role in steering assistance, making it easy to operate the main steering wheel or the auxiliary steering wheel; the piston rod of the steering oil cylinder 1519 is controlled by the main steering gear 1517 or the auxiliary steering gear 1520 through the hydraulic control check valve 1518 to move left and right, thereby pushing the steering connecting plate 131 and the steering knuckle 133 to turn left or right, and in turn driving the front wheels to deflect left or right, realizing vehicle turning;

[0060] (2) The overflow valve 1523 is installed on the hydraulic pipeline between the double-path filling valve 155 and the monostable valve 1522, which can automatically overflow the oil to keep the pressure stable when the hydraulic pressure is too high;

[0061] (3) The second hydraulic oil path after the double-path liquid filling valve 155 is divided into two groups of branches, each group of branches contains two branches in parallel, each branch in the first group of branches is pressure-controlled output through a pedal valve 159, and then through a shuttle valve 1510 to give the front wheel brake 1511 and the rear wheel brake 1512 for driving brake, the greater the pressure, the greater the braking force; two shuttle valves 1510 control the driving brake of the front axle and the rear axle respectively; two pedal valves 159 are in parallel, no matter which one is operated, it can play a braking effect, thereby ensuring the safety and reliability of the brake;

[0062] (4) Each branch in the second group of branches divided by the second hydraulic oil path after the double-path liquid filling valve 155 is communicated with the parking cavity of the brake chamber pump of the rear wheel brake 1512 (fail-safe type) through the reverse parking brake valve 1515 and the shuttle valve. When parking brake is needed, operate the reverse parking brake valve 1515 to make the hydraulic oil in the parking cavity of the brake chamber pump of the rear wheel brake 1512 (fail-safe type) return to the hydraulic oil tank through the shuttle valve and the reverse parking brake valve 1515, so as to realize parking brake under the action of the parking spring of the brake chamber pump; when the parking brake needs to be released, operate the reverse parking brake valve 1515 to make the hydraulic oil fill into the parking cavity of the brake chamber pump of the rear wheel brake 1512 (fail-safe type) through the reverse parking brake valve 1515 and the shuttle valve, so as to compress the parking spring and release the parking brake.

[0063] (5) The main path of the second hydraulic oil path and the third hydraulic oil path after the double-path liquid filling valve 155 is installed with an accumulator 158, the accumulator 158 in the hydraulic pipeline plays the role of energy storage in the hydraulic system 15, when the hydraulic pump 152 does not work or the vehicle electrical fault occurs, the accumulator 158 can maintain the pressure of the hydraulic system 15, ensure that the brake can be safely operated more than 5 times, to ensure the safe parking of the vehicle;

[0064] (6) The main path of the third hydraulic oil path after the double-path liquid filling valve 155 is installed with a two-position three-way valve 156, and a manual pressure pump 157 is connected with one port of the inlet end of the two-position three-way valve 156, when the vehicle cannot be pressurized due to some reason, the rear wheel brake 1512 (fail-safe type) is locked, and the vehicle cannot be towed, the two-position three-way valve 156 is switched to the manual pressure pump 157 to work, and the hydraulic system 15 is manually pressurized to release the brake of the rear wheel brake 1512, so that the vehicle can move;

[0065] (7) The shock-proof pressure gauges 1516 and 1514 monitor the pressure on the hydraulic system pipeline, which plays a role of direct display.

[0066] (8) The explosion-proof electromagnetic reversing valve 1524 is installed on the hydraulic oil return hydraulic circuit of the hydraulic oil tank in the parking cavity of the brake cylinder of the rear wheel brake 1512 (fail-safe type). The coil of the explosion-proof electromagnetic reversing valve 1524 is connected in series with the auxiliary power supply and the emergency stop button arranged in the main driver's cabin and the deputy driver's cabin respectively. After pressing the emergency stop button in the main driver's cabin or the deputy driver's cabin, the coil of the explosion-proof electromagnetic reversing valve 1524 is de-energized, the valve core is returned to the original position, the hydraulic oil in the parking cavity of the brake cylinder of the rear wheel brake 1512 (fail-safe type) returns to the hydraulic oil tank through the explosion-proof electromagnetic reversing valve 1524, the rear wheel brake 1512 (fail-safe type) is decompressed and braked, and the rear wheel stops rotating; in normal working condition, the coil of the explosion-proof electromagnetic reversing valve 1524 is energized, and the hydraulic circuit of the hydraulic oil return tank through the explosion-proof electromagnetic reversing valve 1524 is closed.

[0067] 3. Power battery assembly 18

[0068] The power battery assembly 18 is used as the power source of the vehicle, adopts a battery pack with explosion-proof design, and meets the safety requirements in the coal mine. The power battery assembly 18 is installed on the frame assembly 10 and connected with the electric vehicle control device 19 through a cable.

[0069] 4. Electric vehicle control device 19

[0070] The electric vehicle control device 19 is installed on the frame assembly 10 and connected with the first drive motor 16, the second drive motor 153 and other components through a cable. The electric vehicle control device is used to control the coordinated work of the first drive motor, the second drive motor and other components, and ensure the normal operation of the vehicle.

[0071] See also Figures 3 to 7 As shown in the drawings, the bidirectional driving mine electric trackless rubber-tyred vehicle of the embodiment includes a frame assembly 10, a main driver's cabin 11, a deputy driver's cabin 12, a front axle assembly 13, a rear axle assembly 14, a hydraulic system (including a hydraulic oil tank 151, a hydraulic pump 152, a second drive motor 153), a first drive motor 16, a brake system, a power battery assembly 18, an electric vehicle control device 19 and other main components, as well as a front trailer hook 20, a front bumper assembly 21, a battery waterproof cover 22, a vehicle cabin assembly 23, a deputy frame 24, a rear tail lamp assembly 25, a rear trailer hook 26, a rear wheel 27, a rear leaf spring 28, a fire extinguisher 29, a rear transmission shaft assembly 30, a front wheel 31, a front leaf spring 32, a rearview mirror assembly 33, a front headlamp assembly 34, a transfer case, a front transmission shaft assembly (not shown in the drawings), a main steering device 111, a deputy steering device 121 and other devices; there are also an accelerator pedal and a brake pedal (not shown in the drawings).

[0072] The frame assembly 10 is provided with a cab (main cab 11 and auxiliary cab 12) and a carriage assembly 23, the main cab 11 and the auxiliary cab 12 are respectively arranged at the front end and the rear end of the frame assembly 10, the carriage assembly 23 is located between the main cab 11 and the auxiliary cab 12, the front axle assembly 13 is arranged at the front part of the frame assembly 10 through front leaf springs 32, the rear axle assembly 14 is arranged at the rear part of the frame assembly 10 through rear leaf springs 28, and the front wheel 31 and the rear wheel 27 are respectively arranged at the front part and the rear part of the frame assembly 10 through the front axle assembly 13 and the rear axle assembly 14. The steering device (main steering device 111 and auxiliary steering device 121) is used for controlling the steering of the front wheel 31.

[0073] The first driving motor 16 and the transfer are arranged in the middle part of the frame assembly 10, the power output shaft of the first driving motor 16 is connected with the input shaft of the transfer, the front output shaft of the transfer is connected with the front wheel 31 through the front transmission shaft assembly and the front axle assembly 13, and the rear output shaft of the transfer is connected with the rear wheel 27 through the rear transmission shaft assembly 30 and the rear axle assembly 14. The hydraulic oil tank 151, the hydraulic pump 152 and the second driving motor 153 are arranged outside the middle part of the frame assembly 10, the hydraulic pump is connected with the steering device and the braking device through a hydraulic pipeline and is used for providing hydraulic power for the steering device and the braking device. The electric vehicle control device 19 is arranged on the frame assembly 10 and is connected with the first driving motor 16, the second driving motor 153 and the like, is used for controlling the first driving motor 16 and the second driving motor 153, and the first driving motor 16 and the second driving motor 153 are all explosion-proof motors. The power battery assembly 18 is arranged on the frame assembly 10 and is connected with the electric vehicle control device 19 and is used as a power source. The power battery assembly 18 adopts an explosion-proof design, so that the explosion-proof performance of the vehicle is improved. The power battery assembly 18 can select various types of batteries or battery groups with explosion-proof design, such as explosion-proof fuel cell, explosion-proof lithium ion battery power supply, explosion-proof sodium ion battery power supply and the like, and the explosion-proof lithium ion battery power supply is preferably selected.

[0074] When the bidirectional driving mine electric trackless rubber-tyred vehicle is in the main driving mode, the driver sits on the main driving position of the main cab 11 and controls the driving direction and speed of the vehicle by operating the main steering device 111 and the accelerator pedal; when the vehicle is in the auxiliary driving mode, the driver sits on the auxiliary driving position of the auxiliary cab 12, the auxiliary driving position is a reverse driving seat arranged at the tail of the vehicle, and the driver controls the driving direction and speed of the vehicle by operating the auxiliary steering device 121 and the accelerator pedal.

[0075] The front axle assembly 13 can convert the steering operation of the steering device into the steering action of the wheels and the vehicle. When the vehicle is in the main driving mode, i.e. forward driving, the steering mode is the front wheel steering mode; when the vehicle is in the auxiliary driving mode, i.e. reverse driving, the steering mode becomes the rear wheel steering mode. The front wheel steering mode is that the steering mechanism drives the front wheels to deflect in the same direction as the main steering device, and the rear wheel steering mode is that the steering mechanism drives the rear wheels (i.e. the front wheels when the vehicle is in the main driving mode) to deflect in the opposite direction to the auxiliary steering device, and the body turns in the same direction as the steering wheel. In addition, display systems can be arranged in the main and auxiliary driver's cabins respectively, so that the driver can directly observe the vehicle operation information through the display systems. The main and auxiliary driver's cabins each have a windshield as an observation window. In this specific embodiment, the windshield of the auxiliary driver's cabin 12 is simplified, and an observation window is arranged behind the auxiliary steering wheel, which can be a transparent display screen capable of displaying vehicle operation information. Since the purpose of the auxiliary driver's cabin 12 is only to drive the vehicle out of a narrow lane, and not to drive the vehicle out in one direction, the driving changes from reversing to forward driving; the bidirectional driving mine electric trackless rubber-tyred vehicle of the utility model mainly uses the main driving mode and the auxiliary driving mode.

[0076] The control strategy of the bidirectional driving mine electric trackless rubber-tyred vehicle of the utility model is that the acceleration or deceleration of the vehicle is realized by an accelerator pedal, the accelerator pedals in the main and auxiliary driver's cabins are independent of each other, and only the accelerator pedal in the driver's cabin at one end in the driving mode is effective. The braking and emergency stop of the vehicle are realized by a brake pedal and an emergency stop button, the brake pedals and the emergency stop buttons in the main and auxiliary driver's cabins can be independently operated, and the operation of the driver's cabin at one end in the driving mode is effective, thereby ensuring safety.

[0077] The bidirectional driving mine electric trackless rubber-tyred vehicle adopts the same set of steering mechanisms to realize steering in forward and reverse driving, solves the problem of rear wheel dragging in turning existing in the double-head full control scheme of the bidirectional driving trackless rubber-tyred vehicle, effectively saves configuration materials and cost, and facilitates switching control; the steering control operation mode of the auxiliary steering device is consistent with that of the main steering device, and the original steering axle is still controlled; further, the brake pedals and emergency stop buttons of the main and auxiliary braking control systems can be independently operated and are all effective, ensuring safety and solving the problem of lack of safety locking between the two operation control systems existing in the double-head full control scheme of the bidirectional driving trackless rubber-tyred vehicle; electric driving is adopted, low noise, no emission, environmental protection, energy saving, low operation cost, avoiding the problems of large noise, tail gas pollution of the environment, low energy utilization efficiency, high operation cost existing in diesel vehicles; the power battery assembly adopts an explosion-proof design, and the first driving motor and the second driving motor adopt explosion-proof motors, so that the vehicle has an explosion-proof function; when the vehicle cannot turn around in the coal mine underground roadway, it can be driven from the auxiliary cab end, so that the driver has a good view, driving is safer and more convenient, the problems of poor reverse image definition, difficult reverse, insecurity and inconvenience of the one-way driving vehicle when reversing are solved, the vehicle can conveniently turn around in the coal mine underground roadway, and the flexibility, passability and use safety of the vehicle are improved.

[0078] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, various changes made within the knowledge range of ordinary skilled persons in the art without departing from the purpose of the utility model should be regarded as the protection range of the utility model.

Claims

1. A bidirectional driving electric trackless rubber-tyred vehicle for mine use, characterized in that, The utility model relates to a kind of electric vehicle, including: Main cab and vice cab are respectively installed in the front end and rear end of frame assembly; Front wheel and rear wheel are respectively installed in the front and rear of frame assembly by front axle assembly and rear axle assembly; Steering device includes main steering device installed in main cab and vice steering device installed in vice cab, and main steering device and vice steering device are connected with the steering cylinder of same front axle assembly by hydraulic pipeline, for controlling the steering of front wheel; Hydraulic oil tank and hydraulic pump are installed on frame assembly, and hydraulic pump is connected with steering device by hydraulic pipeline, for providing hydraulic power for steering device; Driving mode switching device includes two-position three-way valve, and the two-position three-way valve is installed on the hydraulic pipeline between hydraulic pump and steering device, for switching the main driving mode and vice driving mode of vehicle; The steering of main driving mode and vice driving mode of vehicle is executed by same front axle assembly, when the spool of two-position three-way valve is switched to the working position corresponding to main driving mode, the two-position three-way valve makes the hydraulic oil output by hydraulic pump flow to main steering device, to realize main cab end control;When the spool of two-position three-way valve is switched to the working position corresponding to vice driving mode, the two-position three-way valve makes the hydraulic oil output by hydraulic pump flow to vice steering device, to realize vice cab end control.

2. The bidirectional driving electric trackless rubber-tyred mine car according to claim 1, characterized in that: It also has double-path filling valve, the oil outlet of hydraulic pump is directly or indirectly connected with the oil inlet of double-path filling valve, and the oil outlet of double-path filling valve is connected with steering device and brake system device by hydraulic pipeline respectively, to provide hydraulic power for steering device and brake system device.

3. The bidirectional driving electric trackless rubber-tyred mine car according to claim 1, characterized in that: The main steering device includes main steering wheel, main steering column and main steering gear, the main steering wheel is connected with main steering gear through main steering column, and the main steering gear is connected with the steering cylinder of front axle assembly through two hydraulic pipelines with hydraulic control check valve;The vice steering device includes vice steering wheel, vice steering column and vice steering gear, the vice steering wheel is connected with vice steering gear through vice steering column, and the vice steering gear is connected with the steering cylinder of front axle assembly through two hydraulic pipelines with hydraulic control check valve.

4. The bidirectional driving electric trackless rubber-tyred mine car according to claim 1, characterized in that: It also has power battery assembly, electric vehicle control device, first drive motor, transfer case, front drive shaft assembly, rear drive shaft assembly and second drive motor, the first drive motor and second drive motor are explosion-proof motors, the power battery assembly, electric vehicle control device, first drive motor, transfer case and second drive motor are installed on frame assembly, the power battery assembly is connected with electric vehicle control device through cable, the electric vehicle control device is connected with first drive motor and second drive motor through cable, the power output shaft of first drive motor is connected with the input shaft of transfer case, the front output shaft of transfer case is connected with front wheel through front drive shaft assembly and front axle assembly, the rear output shaft of transfer case is connected with rear wheel through rear drive shaft assembly and rear axle assembly, and the power output shaft of second drive motor is connected with the hydraulic pump.

5. The bidirectional driving electric trackless rubber-tyred mine car according to claim 2, characterized in that: The main driver room and the vice driver room are provided with an accelerator pedal, a brake pedal and an emergency stop button, the brake pedal in the main driver room is connected with the brake pedal in the vice driver room in parallel on a hydraulic pipeline for driving brake, an explosion-proof electromagnetic reversing valve is installed on a branch hydraulic circuit of a hydraulic oil return tank in a parking cavity of a brake chamber of a fail-safe rear wheel brake, a coil of the explosion-proof electromagnetic reversing valve is connected with an auxiliary power supply and an emergency stop button arranged in the main driver room and the vice driver room in series, after pressing the emergency stop button in the main driver room or the vice driver room, the coil of the explosion-proof electromagnetic reversing valve is powered off, a valve core is reset, hydraulic oil in the parking cavity of the brake chamber of the fail-safe rear wheel brake returns to the hydraulic oil return tank through the explosion-proof electromagnetic reversing valve, the fail-safe rear wheel brake is de-pressurized and braked, and the rear wheel stops rotating; in normal working, the coil of the explosion-proof electromagnetic reversing valve is powered on, and the branch hydraulic circuit of the hydraulic oil return tank through the explosion-proof electromagnetic reversing valve is closed.

6. The bidirectional driving electric trackless rubber-tyred mine car according to claim 1, characterized in that: The vehicle further has a vehicle cabin assembly installed on the vehicle frame assembly and located between the main driver room and the vice driver room.

7. The bidirectional driving electric trackless rubber-tyred mine car according to claim 4, characterized in that: The power battery assembly is an explosion-proof lithium ion battery power supply.

8. The bidirectional driving electric trackless rubber-tyred mine car according to claim 1, characterized in that: The hydraulic pump is a double linkage gear pump.

9. The bidirectional driving electric trackless rubber-tyred mine car according to claim 1, characterized in that: The vehicle further has front and rear leaf springs, the front axle assembly is installed at the front of the vehicle frame assembly through the front leaf spring, and the rear axle assembly is installed at the rear of the vehicle frame assembly through the rear leaf spring.

10. The bi-directional electric self-propelled trackless rubber-tyred mine truck of claim 1, wherein: The vehicle further has a front bumper assembly, a battery waterproof cover, a headlamp assembly, a rear tail lamp assembly, a rearview mirror assembly, a fire extinguisher, a front trailer hook, a rear trailer hook, a subframe, an accelerator pedal and a brake pedal.

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