Motor-driven two-way control steel rail grinding wagon

Abstract

The motor-driven bidirectional control steel rail grinding wagon comprises a frame (101), and a cab (1) is arranged above each of the front end and the rear end of the frame (101); a steel rail detection device (4) for detecting the position of a steel rail is arranged below the frame (101), when derailing is detected, an alarm signal is sent out to trigger parking protection, and the grinding wagon is parked; dust suppression and fire prevention devices (5) are arranged on the left side and the right side of the grinding device (2) and spray water mist to a grinding area where a steel rail is ground through a grinding wheel; a dust collecting device (3) for collecting grinding dust is arranged above the frame (101), and an automatic dust removing mechanism is arranged at the bottom of the dust collecting device (3) and automatically cleans dust in the dust collecting device (3). Bidirectional control is achieved, control is convenient, a derailing protection device prevents the polishing device from being damaged due to derailing, a dust removal device can automatically clean dust, and a cooling fireproof device can prevent fire disasters.

Description

Technical Field

[0001] The present invention belongs to the field of mechanical technology, specifically to the field of railway engineering machinery technology, and in particular to a motor-driven bidirectionally controlled rail grinding vehicle. Background Art

[0002] Rail grinding vehicles are essential equipment for railway maintenance. They can grind rail surfaces that have become defective due to use, eliminating fatigue cracks, corrugated wear, and other problems on the rail surface, extending the service life of the rails and improving the safety and comfort of train operations. With the development and promotion of rail grinding technology, an increasing number of high-speed railways, heavy-haul railways, and urban rail transit systems are adopting this technology to extend rail life and reduce maintenance costs. At the same time, rail grinding methods have also evolved from initial repair grinding to maintenance grinding to the now popular "frequent, fast, and light" preventive grinding.

[0003] like Figure 1 As shown, it is a rail grinding vehicle for urban subways in the prior art. The whole vehicle is composed of two single-unit grinding vehicles 100 connected together. The two single-unit grinding vehicles 100 are of a centrally symmetrical structure. Each single-unit grinding vehicle 100 is provided with a driver's cab 1, and the driver's cab 1 is located at both ends of the whole vehicle. A grinding device 2 with a group of eight grinding heads is provided under each single-unit grinding vehicle 100. There are a total of sixteen grinding heads in the whole vehicle, divided into two groups. Of course, steering, drive and control components are also included. These are commonly used settings and will not be repeated here. Since the rail grinding vehicle composed of two single-unit grinding vehicles 100 is relatively long, the grinding section cannot be fully covered, especially the long areas before and after the turnout cannot be ground; in addition, the grinding heads are divided into two groups, the number of grinding wheels is large, and the landing accuracy deviation of the grinding wheels is large. The manufacturing of the whole vehicle is cumbersome and the cost is high.

[0004] During the rail grinding process, the working conditions are usually poor. Sometimes the grinding device may derail when the grinding vehicle is being pulled or moving. Once derailed, the grinding head will be damaged because it is at the bottom of the vehicle. The grinding head is the most expensive equipment in the grinding vehicle and will cause great economic losses.

[0005] Rail grinding vehicles generate large amounts of grinding dust during the rail grinding process, posing a significant health risk to workers and polluting the surrounding railway environment. Furthermore, the process generates sparks and high temperatures, which, combined with the dust, can easily cause fires. To prevent dust, rail grinding vehicles are equipped with dust collection devices that filter and collect dust generated during the grinding process. Once the dust collection device reaches a certain level, it must be removed before use. Fire prevention is typically carried out passively with fire extinguishers.

[0006] like Figure 2As shown, the dust collection device 3 currently installed on the frame 101 of a rail grinding vehicle has two sets of movable dust discharge doors 304 located below the dust collection device 3. When a certain amount of dust has been collected, the movable doors 304 are opened for manual dust removal. Manual dust removal requires full body protection, and operators wearing protective clothing and masks find it difficult, time-consuming, and labor-intensive to remove dust. This is especially challenging in hot weather, which increases the difficulty of the task. Summary of the Invention

[0007] The purpose of the present invention is to provide a motor-driven bidirectional control rail grinding vehicle. A driver's cab is provided at both ends of the single grinding vehicle. It has bidirectional control and is easy to control. A set of grinding devices has high precision in the landing point of the grinding wheel. The vehicle is small in size, has a large grinding range, is compact in structure, safe and reliable, and easy to manufacture. It is capable of independent grinding operations, can effectively repair various forms of rail defects, improve the wheel-rail relationship, and increase the service life of the rail. At the same time, a derailment protection device is provided to prevent derailment from damaging the grinding device. The dust removal device can automatically clean dust and can complete the cleaning of dust accumulated in the dust collecting device in a short time, which is convenient for the operator to operate, improves working conditions, shortens working time, and improves work efficiency. The operator can easily and labor-savingly complete the work of removing dust from the dust collecting device. The dust suppression and fire prevention device can prevent fires.

[0008] The technical solutions provided by the present invention are as follows:

[0009] A motor-driven bidirectionally controlled rail grinding vehicle comprises a vehicle frame 101, wherein a driver's cab 1 is provided above each of the front and rear ends of the vehicle frame 101;

[0010] A grinding device 2 is provided in the middle portion below the vehicle frame 101; the front and rear ends of the grinding device 2 respectively include a pair of running wheels 201 that run on the rails, and the inner sides of the running wheels 201 are respectively provided with rail detection devices 4 for detecting the position of the rails. When derailment is detected, an alarm signal is issued to trigger the parking protection, and the grinding vehicle stops;

[0011] The left and right sides of the grinding device 2 each include four motor-driven grinding heads 202, and the grinding wheels of the grinding heads 202 grind the rails. The grinding device 2 is also provided with a dust suppression and fire prevention device 5, which sprays water mist onto the grinding area where the grinding wheels grind the rails.

[0012] A dust collecting device 3 for collecting grinding dust is provided above the vehicle frame 101 , and an automatic dust removal mechanism is provided at the bottom of the dust collecting device 3 to automatically clean the dust in the dust collecting device 3 .

[0013] Preferably, an operation console is provided in the driver's cab 1, and the operation consoles of the two driver's cabs 1 are interlocked.

[0014] Preferably, the rail detection device 4 includes a derailment sensor 401 and a sensor bracket 402. The upper portion of the sensor bracket 402 is mounted on the grinding device 2, and the lower end extends above the inner rail of the running wheel 201 and is mounted with the derailment sensor 401.

[0015] Preferably, the dust suppression and fire prevention device 5 includes eight groups of fan-shaped nozzles 501 and connecting pipes 502. The fan-shaped nozzles 501 are installed on the outside of the grinding head 202, and the water outlet is aligned with the bottom of the rail below the grinding area; the water inlet is connected to the water pump and the water tank in sequence through the connecting pipe 502.

[0016] Preferably, the angle between the water outlet direction of the fan-shaped nozzle 501 and the horizontal plane is 45 degrees.

[0017] Preferably, the automatic dust removal mechanism includes two sets of independently controlled horizontally parallel arranged tubular screw conveyors 301 and two ash hoppers 302. The two ash hoppers 302 are installed side by side at the lower part of the dust collecting box 303 of the dust collecting device 3 to receive the dust from the dust collecting box 303; the cross-section of the ash hopper 302 is V-shaped, and the tubular screw conveyor 301 is installed in the dust collecting box 303 below the V-shaped bottom opening.

[0018] Preferably, the tubular screw conveyor 301 includes a spiral sleeve 3011, a spiral push rod 3012 and a spiral drive mechanism; the spiral sleeve 3011 is arranged below the ash collecting hopper 302, and a dust inlet 3013 is opened above the spiral sleeve 3011; the dust inlet 3013 is connected to the V-shaped bottom opening of the ash collecting hopper 302;

[0019] The two ends of the spiral sleeve 3011 are installed at the bottom of the dust collecting box 303, the front end extends out of the dust collecting box 303 on one side and is provided with a dust outlet 3014; the rear end extends out of the dust collecting box 303 on the other side; the spiral push rod 3012 is arranged in the spiral sleeve 3011, and the rear end is connected to the spiral driving mechanism; the spiral driving mechanism drives the spiral push rod 3012 to rotate and push the dust forward, automatically sucking the dust from the dust inlet 3013 and discharging it from the dust outlet 3014, automatically cleaning the dust in the dust collecting device 3.

[0020] Preferably, the spiral drive mechanism includes a motor reducer assembly 3015 and a transmission assembly 3016; the transmission assembly 3016 includes an outer sleeve 3017 and a transmission shaft 3018, the outer sleeve 3017 is fixedly connected to the rear end of the spiral sleeve 3011, the transmission shaft 3018 is installed in the outer sleeve 3017, the front end is coaxially connected to the spiral push rod 3012, and the rear end is connected to the output shaft of the motor reducer assembly 3015.

[0021] Preferably, the front end of the spiral sleeve 3011 is provided with an ash discharge quick connector 3019.

[0022] Preferably, the area between the two driver cabs 1 above the frame 101 is the equipment installation area, and pedestrian corridors 8 are respectively provided between the two driver cabs 1 and the equipment installation area; outer corridors are provided on the left and right sides of the equipment installation area to connect to the pedestrian corridors 8; and safety handrails 19 are provided on the edges of the outer corridors.

[0023] It can be seen from the technical solution provided by the present invention described above that the embodiment of the present invention provides a motor-driven two-way controlled rail grinding vehicle, in which a driver's cab is provided at both ends of the single grinding vehicle, and the vehicle has real two-way control, which is convenient to control. A set of grinding devices has high landing precision of the grinding wheel, the vehicle is small in size, has a large grinding range, is compact in structure, safe and reliable, and easy to manufacture. It is capable of independent grinding operations, can effectively repair various forms of rail diseases, improve the wheel-rail relationship, and increase the service life of the rail. At the same time, a derailment protection device is provided to prevent derailment from damaging the grinding device. The dust removal device can automatically clean the dust, and can complete the cleaning of the dust accumulated in the dust collecting device in a short time, which is convenient for the operator to operate, improves the working conditions, shortens the working time, and improves the work efficiency. The operator can easily and labor-savingly complete the work of removing dust from the dust collecting device. The dust suppression and fire prevention device can prevent fires. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic diagram of the main structure of a rail grinding vehicle for urban subways in the prior art;

[0026] Figure 2 This is a schematic diagram of the structure of a dust collection device for a rail grinding vehicle used in urban subways in the prior art;

[0027] Figure 3 A schematic diagram of the main structure of a motor-driven bidirectionally controlled rail grinding vehicle provided by an embodiment of the present invention;

[0028] Figure 4 A schematic top view of the structure of a motor-driven bidirectionally controlled rail grinding vehicle provided in an embodiment of the present invention;

[0029] Figure 5 A schematic diagram of the left side structure of a motor-driven bidirectionally controlled rail grinding vehicle provided in an embodiment of the present invention;

[0030] Figure 6 A schematic structural diagram of a diesel engine generator drive device for a motor-driven bidirectionally controlled rail grinding vehicle provided by an embodiment of the present invention;

[0031] Figure 7 A schematic diagram of the main structure of a power bogie of a motor-driven bidirectionally controlled rail grinding vehicle provided by an embodiment of the present invention;

[0032] Figure 8 A schematic diagram of a top view of the power bogie of a motor-driven bidirectionally controlled rail grinding vehicle provided in an embodiment of the present invention;

[0033] Figure 9 Schematic diagram of the structure of the rail detection device of the motor-driven bidirectional control rail grinding vehicle provided in the embodiment of the present invention Figure 1 ;

[0034] Figure 10 Schematic diagram of the structure of the rail detection device of the motor-driven bidirectional control rail grinding vehicle provided in the embodiment of the present invention Figure 2 ;

[0035] Figure 11 Schematic diagram of the dust suppression and fire prevention device structure of the motor-driven bidirectional control rail grinding vehicle provided in the embodiment of the present invention Figure 1 ;

[0036] Figure 12 Schematic diagram of the dust suppression and fire prevention device structure of the motor-driven bidirectional control rail grinding vehicle provided in the embodiment of the present invention Figure 2 ;

[0037] Figure 13 A schematic diagram of the main structure of a dust collection device for a motor-driven bidirectionally controlled rail grinding vehicle provided in an embodiment of the present invention;

[0038] Figure 14 A schematic diagram of the rear view structure of a dust collection device of a motor-driven bidirectionally controlled rail grinding vehicle provided in an embodiment of the present invention;

[0039] Figure 15 A schematic diagram of the right side structure of a dust collection device for a motor-driven bidirectionally controlled rail grinding vehicle provided in an embodiment of the present invention;

[0040] Figure 16 for Figure 13 AA section view;

[0041] Figure 17 Schematic diagram of the transmission assembly structure of the dust collection device of the motor-driven bidirectionally controlled rail grinding vehicle provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0042] The following is a clear and complete description of the technical solutions in the embodiments of the present invention, in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0043] First, the following terms may be used in this article:

[0044] The term “and / or” means that either or both of them can be realized at the same time. For example, X and / or Y includes both “X” or “Y” and “X and Y”.

[0045] The terms "include," "comprises," "contains," "has," or other similar expressions should be interpreted as non-exclusive. For example, "including certain technical features (such as raw materials, components, ingredients, carriers, dosage forms, materials, dimensions, parts, components, mechanisms, devices, steps, procedures, methods, reaction conditions, processing conditions, parameters, algorithms, signals, data, products, or manufactured articles)" should be interpreted as including not only the technical features explicitly listed, but also other technical features known in the art that are not explicitly listed.

[0046] The term "consisting of" excludes any technical features not explicitly listed. If used in a claim, this term renders the claim closed, excluding any technical features other than those explicitly listed, except for conventional impurities associated with them. If this term appears only in a clause of a claim, it limits only the elements explicitly listed in that clause; elements listed in other clauses are not excluded from the claim as a whole.

[0047] The term "parts by mass" refers to the mass ratio of multiple components. For example, if component X is x parts by mass and component Y is y parts by mass, then the mass ratio of component X to component Y is x:y. One part by mass can represent any mass, for example, 1 kg or 3.1415926 kg. The sum of the parts by mass of all components is not necessarily 100 parts; it can be greater than, less than, or equal to 100 parts. Unless otherwise specified, parts, ratios, and percentages herein are by mass.

[0048] Unless otherwise specified or limited, the terms "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this document based on specific circumstances.

[0049] When concentration, temperature, pressure, size or other parameters are expressed in the form of a numerical range, the numerical range should be understood to specifically disclose all ranges formed by the pairing of any upper limit, lower limit, or preferred value within the numerical range, regardless of whether the range is explicitly stated. For example, if a numerical range of "2 to 8" is stated, the numerical range should be interpreted as including ranges of "2 to 7," "2 to 6," "5 to 7," "3 to 4 and 6 to 7," "3 to 5 and 7," "2 and 5 to 7," etc. Unless otherwise specified, the numerical ranges stated herein include both their endpoints and all integers and fractions within the numerical range.

[0050] The terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings and are only for the convenience and simplification of description, and do not explicitly or implicitly indicate that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation to this document.

[0051] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0052] Example

[0053] like Figures 3 to 5The figure shows a motor-driven, bidirectionally controlled rail grinding vehicle used for rail grinding and repair in railways and subways. The vehicle comprises a frame 101 with a driver's cab 1 located above each of the front and rear ends of the frame 101. Each cab 1 houses an operating console, allowing the operator to control the vehicle by operating the joysticks. Both cabs 1 can perform all necessary rail grinding functions, including rail grinding operation control, system monitoring, and emergency response. The operating consoles in the two cabs 1 are interlocked, meaning that when an operator in one cab 1 operates, the corresponding function in the other cab 1 is automatically locked to prevent misoperation. Both cabs 1 are equipped with electrical cabinets to meet the control requirements of the grinding operation. The interlocking mechanism can be mechanical or electronic, or both.

[0054] In this example, reference Figure 4 The area between the two driver cabs 1 above the vehicle frame 101 is the equipment installation area, and a pedestrian corridor 8 is provided between the two driver cabs 1 and the equipment installation area respectively; to facilitate the operators to enter and exit the driver cab 1 and walk, external corridors are provided on the left and right sides of the equipment installation area to connect to the pedestrian corridor 8; forming an external corridor of the entire vehicle, and a safety handrail 19 is provided on the edge of the external corridor.

[0055] In this example, the equipment installed in the equipment installation area includes a water tank 10 for the water supply device, a dust collection device 3, a diesel generator drive device 9, a pneumatic control device 11, a hydraulic control device 12, and a cooling device 13. These devices can all adopt existing technical solutions and be positioned appropriately. Only the exterior corridor and pedestrian corridor 6 need to be left open, and no further details will be given.

[0056] Here, the dust collecting device 3 collects the iron filings and dust generated when the steel grinding device grinds the rails, avoiding dust pollution and protecting the environment. The pneumatic control device 11 and the hydraulic control device 12 are used to control the braking and grinding devices. The pneumatic control device 11 includes an air control cabinet for cylinder control. The hydraulic control device 12 includes a hydraulic oil tank to store hydraulic oil for the hydraulic system. The cooling device 13 consists of three aluminum radiators, which are installed on the steel structure frame, and each side corresponds to the diesel engine intake, coolant, and hydraulic oil heat dissipation. The cooling fan is driven by a hydraulic motor.

[0057] In this example, a first air conditioner outdoor unit 14 and a brake valve assembly 15 are located below the front and rear ends of the vehicle frame 101 at one end, while a second air conditioner outdoor unit 16 and a battery box 17 are located at the other end. The underside of the vehicle frame 3 meets the mounting requirements for split-type air conditioner outdoor units, with two air conditioners serving two driver's cabs 1, respectively. The brake valve assembly 15 utilizes a standard JZ7 braking system, and the battery box 17 consists of 20 1.2V DC 170Ah lead-acid batteries connected in series to generate a 24V DC voltage, providing starting power for the diesel engine.

[0058] In this example, a water pump unit 18 and an air source unit 21 are installed between the power bogie 6 or driven bogie 7 and either side of the grinding device 2 below the vehicle frame 101. The water pump unit 18 is connected to a water tank 10, which stores water for the dust suppression and fire prevention device 5 and firefighting. The water pump unit 18 also provides power for the sprinkler system and firefighting. The air source unit 21 provides dry compressed air for the entire vehicle. This compressed air is primarily used for the braking system, grinding device, and windpipes. The air source unit 21 includes a standard air compressor, air storage tank, and dryer to meet the needs of traction, braking, and auxiliary air.

[0059] In this example, the installation positions of the first air-conditioning outdoor unit 14, the brake valve group 15, the second air-conditioning outdoor unit 16, the battery box 17, the water pump unit 18 and the wind source device 21 do not necessarily have to be in the above manner. Technicians can arrange them reasonably based on the structure. The brake valve group 15, the battery box 17, the water pump unit 18 and the wind source device 21 can adopt the existing technical solutions, which will not be repeated.

[0060] like Figure 6 As shown, the diesel generator drive unit 9 can be housed in a separate diesel generator room, consisting of two louvered side walls and a roof end wall. The diesel generator drive unit 9 provides stable power and electrical output for the rail grinding vehicle and includes a diesel engine 901, a generator 902, a transfer case 903, and a fuel tank 904. The diesel engine 901 is connected to the transfer case 903, which in turn connects the hydraulic pump 1201 of the hydraulic control unit 12 to the grinding device 2. The transfer case 903 is also connected to the generator 902 via a universal joint, driving the generator 902 to generate electricity. The generator 902 then powers the motor of the grinding device 2 and the entire vehicle. The fuel tank 904 stores the oil used by the diesel engine 901.

[0061] In this example, reference Figure 5 The frame 101 is provided with a coupler assembly 20 at both ends. The coupler assembly 20 adopts a universal coupler to connect with the relevant vehicle. For example, the No. 17 coupler can accurately connect with the C70 truck.

[0062] In this example, a grinding device 2 is provided in the middle portion below the vehicle frame 101; this example has only one set of grinding devices 2, which are provided with eight sets of motor-connected grinding wheel structures, that is, "motor-driven", and the grinding wheel landing point has high precision. The grinding device 2 can adopt the existing technical solution to achieve rail grinding operations through the combined control of electrical and hydraulic systems. A power bogie 6 and a driven bogie 7 are respectively provided on both sides of the grinding device 2; both the power bogie 6 and the driven bogie 7 adopt two-system suspension, the first-system suspension is a coil spring, and the second-system suspension is a rubber pile side bearing structure, the side bearing bears the entire weight of the onboard equipment to ensure that the tractor has good dynamic performance. Figure 7 and 8 As shown, the power bogie 6 includes two sets of hydraulic motors 601 and two sets of gear boxes 602; the hydraulic control device 12 is connected to the hydraulic motors 601 and provides power to the power bogie 6 through the hydraulic motors 601 and the gear boxes 602. Specifically, the power bogie 6 structure includes an I-frame body 605, four wheels 603 and two axles 604. The I-frame body 605 is centrally symmetrical and is in the shape of an "I". The center of the straight arm of the I-frame body 605 is connected to the frame 101; specifically, it is hingedly connected to the frame 101 through a center pin 606. The connection method of this center pin is the same as the connection method of the existing power bogie and the frame 101, and will not be repeated here. Four wheels 603 are installed below the two ends of the two horizontal arms of the I-frame body 605 through two axles 604. Two gearboxes 602 are mounted in the middle of two axles 604, respectively. Hydraulic motors 601 are connected to the gearboxes 602 and drive the axles 604 through the gearboxes 602, providing power to the power bogie 6. The driven bogie 7 does not have the hydraulic motor 601 and gearbox 602, and the rest of its structure is the same as the power bogie 6, so it will not be described in detail.

[0063] In this example, if Figure 9 and 10 As shown, the front and rear ends of the grinding device 2 respectively include a pair of running wheels 201 that run on the rails. The running wheels 201 are fixed to the frame of the grinding device 2 through running wheel brackets 203, and can be fixed specifically by bolts. A rail detection device 4 for detecting the position of the rails is provided on the inner side of the running wheel 201. When derailment is detected, an alarm signal is sent to trigger parking protection, and the grinding vehicle stops. Specifically, the rail detection device 4 includes a derailment sensor 401 and a sensor bracket 402. The upper part of the sensor bracket 402 is installed on the grinding device 2, and can be fixed to the frame of the grinding device 2 or directly fixed to the running wheel bracket 203 by bolts. The lower end of the sensor bracket 402 extends above the inner rail of the running wheel 201 and is installed with the derailment sensor 401. This example refers to Figure 9, sensor bracket 402 is a U-shaped bracket, and the two arms of the U-shaped bracket are respectively fixed to the two sides of the running wheel bracket 203 by bolts; the crossbeam of the U-shaped bracket spans above the rail, and the middle part is installed with a derailment sensor 401. The derailment sensor 401 can adopt a distance sensor, such as an infrared sensor or a laser sensor, to detect the distance between the derailment sensor 401 and the upper surface of the rail. If derailment occurs, the distance will change suddenly, and the derailment sensor 401 will just send a corresponding signal and issue an alarm signal. After the control end of the grinding car receives this signal, it triggers the parking protection and the grinding car stops. It has been realized that when the running wheel 201 of the grinding device 2 falls on the rail and is normally pulled, the derailment sensor 401 can detect the rail and send a normal signal; when the running wheel 201 of the grinding device 2 breaks away from the rail, the derailment sensor 401 will not be able to detect the rail and sends an alarm signal. The rail grinding car triggers the braking parking protection, effectively reducing the dragging damage caused by the derailment of the grinding device.

[0064] like Figure 11 and 12 As shown, the left and right sides of the grinding device 2 respectively include four groups of motor-driven grinding heads 202, and the grinding wheels of the grinding heads 202 grind the rails; the grinding device 2 is also provided with a dust suppression and fire prevention device 5, which sprays water mist to the grinding area where the grinding wheels grind the rails; specifically, the dust suppression and fire prevention device 5 includes eight groups of fan-shaped nozzles 501 and connecting pipes 502, and the fan-shaped nozzles 501 are installed on the outside of the grinding head 202, and the water outlets of the fan-shaped nozzles 501 are aligned with the bottom of the rails below the grinding area; the water inlets of the fan-shaped nozzles 501 are connected to the water pump unit 18 and the water tank 10 in sequence through the connecting pipes 502.

[0065] The water outlet direction of the fan-shaped nozzle 501 is at an angle of 30 to 60 degrees to the horizontal plane. It is generally controlled at 45°. When the angle is large and close to 60°, a large amount of water mist will leak out, causing powder pollution in the peripheral space of the working area and wasting water. When the angle is small and close to 30°, it is easy to spray water mist onto the surface of the rail, affecting the normal grinding work. The water outlet direction of the fan-shaped nozzle 501 here can also be called the "spray path 503", and the position it is aimed at is the bottom of the rail below the grinding area, not the grinding area where the grinding wheel contacts the rail. The dust generated by grinding will just fall a certain distance, and the dust suppression and fire prevention effect of aiming at the bottom of the rail below the grinding area is the best.

[0066] The fan-shaped nozzle 501 sprays a wide area and conserves water. Installed at a 45° angle to the horizontal, it precisely targets dust areas created by grinding. The fan-shaped nozzle 501 is connected to a connecting pipe 502, which is secured to the frame of the grinding device 2 via a pipe clamp. By spraying water into the dusty area created by grinding, it absorbs airborne dust, thereby suppressing dust and lowering the temperature in the grinding area, thereby preventing fires. Water for dust suppression and fire prevention is provided by a water pump unit. This reduces the ambient temperature and dust concentration during rail grinding operations, improving the working environment for operators.

[0067] like Figure 13 and 17 As shown, a dust collection device 3 for collecting grinding dust is installed above the frame 101. An automatic dust removal mechanism is installed at the bottom of the dust collection device 3 to automatically clean the dust inside the dust collection device 3. Specifically, the dust collection device 3 also includes a dust collection box 303, a dust collection duct 304, a dust collection fan 305, and dust collection exhaust louvers 306. The function of the dust collection exhaust louvers 306 is to open the louvers when the dust collection fan is operating to discharge air; when the dust collection fan is not operating, the louvers automatically close to prevent rainwater from falling into the dust collection box, which is related to the prior art. When the dust collection fan 305 is in operation, the grinding dust is collected by the dust collection duct 304 into the dust collection box 303. The dust collection box 303 is equipped with multiple sets of filter cartridges 307, which filter the grinding dust.

[0068] The automatic dust removal mechanism includes two sets of independently controlled horizontally parallel arranged tubular screw conveyors 301 and two ash hoppers 302. The two ash hoppers 302 are installed side by side at the lower part of the dust collecting box 303 of the dust collecting device 3 to receive the grinding dust filtered by the filter cartridge 306 in the dust collecting box 303; the cross-section of the ash hopper 302 is V-shaped, and the tubular screw conveyor 301 is installed in the dust collecting box 303 below the V-shaped bottom opening. The tubular screw conveyor 301 includes a spiral sleeve 3011, a spiral push rod 3012 and a spiral drive mechanism; the spiral sleeve 3011 is arranged below the ash collecting hopper 302, and a dust inlet 3013 is opened above the spiral sleeve 3011; the dust inlet 3013 is connected to the V-shaped bottom opening of the ash collecting hopper 302; specifically, the dust inlet 3013 is a rectangular opening opened along the axial direction of the spiral sleeve 3011, and the rectangular opening is the same size as the V-shaped bottom opening of the ash collecting hopper 302, and they pass through and are connected to each other to prevent the leakage of grinding dust.

[0069] The ash collecting hopper 302 here can have two V-shaped cross sections, that is, an inverted square cone, and a position for installing a spiral drive mechanism can be reserved outside the ash collecting hopper 302 along the axial direction of the spiral sleeve 3011.

[0070] The spiral sleeve 3011 is mounted on the bottom of the dust collection box 303. The front end of the spiral sleeve 3011 extends out of one side of the dust collection box 303 and is provided with a dust outlet 3014. A dust outlet quick connector 3019 is installed at the dust outlet 3014 to connect to a dust outlet pipeline or mechanism. The rear end of the spiral sleeve 3011 extends out of the other side of the dust collection box 303. A spiral push rod 3012 is located within the spiral sleeve 3011 and its rear end is connected to a spiral drive mechanism. The spiral drive mechanism drives the spiral push rod 3012 to rotate and push dust forward, automatically sucking dust into the dust inlet 3013 and discharging it out of the dust outlet 3014, thus automatically cleaning the dust within the dust collection device 3.

[0071] The spiral drive mechanism includes a motor reducer assembly 3015 and a transmission assembly 3016; Figure 16 As shown, the transmission assembly 3016 includes an outer sleeve 3017 and a transmission shaft 3018. The outer sleeve 3017 is fixedly connected to the rear end of the spiral sleeve 3011, which can be connected using flange bolts 3019. The transmission shaft 3018 is installed in the outer sleeve 3017. The front end of the transmission shaft 3018 is coaxially connected to the spiral push rod 3012. The connection between the transmission shaft 3018 and the spiral push rod 3012 can be a fixed coupling or direct welding. The rear end of the transmission shaft 3018 is connected to the output shaft of the motor reducer assembly 3015, specifically, via a flat key 30161. In addition, the installation of the transmission shaft 3018 and the outer sleeve 3017 is carried out through a series of shaft parts, including: end cover 30162, first skeleton oil seal 30163, spacer ring 30164, outer elastic circlip 30165, deep groove ball bearing 30166, spacer 30167, tapered roller bearing 30168, second skeleton oil seal 30169 and inner elastic circlip assembly 30160. Its installation method refers to Figure 16 , which is common knowledge and will not be elaborated on.

[0072] advantage:

[0073] 1. Double cab design, two-way control, easy operation. The vehicle is small in size and has a large grinding range. Only one set of grinding devices, no relative error, and high grinding wheel landing accuracy.

[0074] 2. A derailment protection device is provided to prevent derailment from damaging the grinding device.

[0075] 3. The dust removal device can automatically clean the dust and can complete the cleaning of the dust accumulated in the dust collection device in a short time, which is convenient for the operator to operate, improves working conditions, shortens working time, and improves work efficiency. At the same time, the automatic dust removal mechanism includes two sets of independently controlled horizontally parallel tubular screw conveyors, which have good reliability. Even if the tubular screw conveyor fails, the other set of tubular screw conveyors can complete the task. The tubular screw conveyor is arranged in the dust collection box 303 and is modularly designed as a whole with the dust collection device. It does not occupy the internal space of the frame and is easy to install and manufacture. It is convenient for operators to operate and improves work efficiency.

[0076] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A motor-driven bidirectionally controlled rail grinding vehicle, characterized in that: It comprises a vehicle frame (101), wherein a driver's cab (1) is respectively provided above the front and rear ends of the vehicle frame (101); A grinding device (2) is provided in the middle portion below the vehicle frame (101); the front and rear ends of the grinding device (2) respectively include a pair of running wheels (201) that run on the rails, and rail detection devices (4) for detecting the position of the rails are provided on the inner sides of the running wheels (201). When derailment is detected, an alarm signal is issued to trigger parking protection, and the grinding vehicle stops. The left and right sides of the grinding device (2) respectively include four groups of motor-driven grinding heads (202), and the grinding wheels of the grinding heads (202) grind the rails; the grinding device (2) is also provided with a dust suppression and fire prevention device (5), and the dust suppression and fire prevention device (5) sprays water mist onto the grinding area where the grinding wheel grinds the rails; A dust collecting device (3) for collecting grinding dust is provided above the vehicle frame (101), and an automatic dust removal mechanism is provided at the bottom of the dust collecting device (3) for automatically cleaning the dust in the dust collecting device (3).

2. The motor-driven bidirectionally controlled rail grinding vehicle according to claim 1, characterized in that: An operating console is provided in the driver's cab (1), and the operating consoles of the two driver's cabs (1) are interlocked.

3. The motor-driven bidirectionally controlled rail grinding vehicle according to claim 1 or 2, characterized in that: The rail detection device (4) comprises a derailment sensor (401) and a sensor bracket (402). The upper portion of the sensor bracket (402) is mounted on the grinding device (2), and the lower end extends above the inner rail of the running wheel (201) and is mounted with the derailment sensor (401).

4. The motor-driven bidirectionally controlled rail grinding vehicle according to claim 1 or 2, characterized in that: The dust suppression and fire prevention device (5) comprises eight groups of fan-shaped nozzles (501) and connecting pipes (502). The fan-shaped nozzles (501) are installed outside the grinding head (202), and the water outlets are aligned with the bottom of the rail below the grinding area; the water inlet is connected to the water pump and the water tank in sequence through the connecting pipes (502).

5. The motor-driven bidirectionally controlled rail grinding vehicle according to claim 4, characterized in that: The angle between the water outlet direction of the fan-shaped nozzle (501) and the horizontal plane is 45 degrees.

6. The motor-driven bidirectionally controlled rail grinding vehicle according to claim 1 or 2, characterized in that: The automatic dust removal mechanism comprises two sets of independently controlled horizontally parallel arranged tubular screw conveyors (301) and two ash collecting hoppers (302). The two ash collecting hoppers (302) are installed side by side in the lower part of the dust collecting box (303) of the dust collecting device (3) to receive dust from the dust collecting box (303). The cross section of the ash collecting hopper (302) is V-shaped, and the tubular screw conveyor (301) is installed in the dust collecting box (303) below the V-shaped bottom opening.

7. The motor-driven bidirectionally controlled rail grinding vehicle according to claim 6, characterized in that: The tubular screw conveyor (301) comprises a spiral sleeve (3011), a spiral push rod (3012) and a spiral drive mechanism; the spiral sleeve (3011) is arranged below the ash collecting hopper (302), and a dust inlet (3013) is opened above the spiral sleeve (3011); the dust inlet (3013) is connected to the V-shaped bottom opening of the ash collecting hopper (302); The spiral sleeve (3011) is mounted at both ends on the bottom of the dust collecting box (303), with the front end extending out of the dust collecting box (303) on one side and provided with a dust outlet (3014); the rear end extending out of the dust collecting box (303) on the other side; the spiral push rod (3012) is arranged in the spiral sleeve (3011), and the rear end is connected to a spiral driving mechanism; the spiral driving mechanism drives the spiral push rod (3012) to rotate and push the dust forward, automatically sucking the dust from the dust inlet (3013) and discharging it from the dust outlet (3014), thereby automatically cleaning the dust in the dust collecting device (3).

8. The motor-driven bidirectionally controlled rail grinding vehicle according to claim 7, characterized in that: The spiral drive mechanism comprises a motor reducer assembly (3015) and a transmission assembly (3016); the transmission assembly (3016) comprises an outer sleeve (3017) and a transmission shaft (3018); the outer sleeve (3017) is fixedly connected to the rear end of the spiral sleeve (3011); the transmission shaft (3018) is installed in the outer sleeve (3017); the front end is coaxially connected to the spiral push rod (3012); and the rear end is connected to the output shaft of the motor reducer assembly (3015).

9. The motor-driven bidirectionally controlled rail grinding vehicle according to claim 7, characterized in that: The front end of the spiral sleeve (3011) is provided with an ash discharge quick connector (3019).

10. The motor-driven bidirectionally controlled rail grinding vehicle according to claim 1 or 2, characterized in that: The area between the two driver cabs (1) above the vehicle frame (101) is an equipment installation area, and pedestrian corridors (8) are respectively provided between the two driver cabs (1) and the equipment installation area; outer corridors are provided on the left and right sides of the equipment installation area to connect to the pedestrian corridors (8); and safety handrails (19) are provided at the edges of the outer corridors.

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