A motor-driven bidirectional control rail grinding vehicle

Abstract

This utility model discloses a motor-driven bidirectional control rail grinding vehicle, including a frame (101), with a driver's cab (1) located above the front and rear ends of the frame (101); a rail detection device (4) is located below the frame (101) to detect the position of the rail, which issues an alarm signal to trigger a stop protection when derailment is detected, and the grinding vehicle stops; dust suppression and fire prevention devices (5) are located on the left and right sides of the grinding device (2), which spray water mist onto the grinding area of ​​the grinding wheel; a dust collection device (3) is located above the frame (101) to collect grinding dust, and an automatic dust removal mechanism is located at the bottom of the dust collection device (3) to automatically clean the dust inside the dust collection device (3). It features bidirectional control, convenient control, a derailment protection device to prevent derailment and damage to the grinding device, an automatic dust removal device to clean dust, and a cooling and fire prevention device to prevent fire.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology, specifically to the field of railway engineering machinery technology, and in particular to a motor-driven bidirectional control rail grinding vehicle. Background Technology

[0002] Rail grinding machines are indispensable equipment in railway maintenance. They can grind the surfaces of rails that have developed defects due to use, eliminating problems such as fatigue cracks, wavy wear, and abrasion, thus extending the service life of the rails and improving the safety and comfort of train operation. With the development and promotion of rail grinding technology, more and more high-speed railways, heavy-haul railways, and urban rail transit are adopting this technology to extend rail life and reduce maintenance costs. At the same time, the form of rail grinding has also evolved from the initial repair grinding to maintenance grinding, and now to the particularly popular "frequent, rapid, and light" preventive grinding.

[0003] like Figure 1 The image shows a rail grinding vehicle for urban subways in the prior art, consisting of two individual grinding cars 100 coupled together. The two individual grinding cars 100 have a centrally symmetrical structure, with each car having a driver's cab 1 located at either end of the vehicle. Each car 100 has a grinding device 2 with eight grinding heads, totaling sixteen grinding heads in two groups. Steering, drive, and control components are also included, a common setup that will not be elaborated further. Because the rail grinding vehicle composed of two coupled individual grinding cars 100 is relatively long, the grinding area cannot be fully covered, especially in long areas before and after turnouts. Furthermore, the two groups of grinding heads result in a large number of grinding wheels, leading to significant deviations in the accuracy of the grinding wheel placement. The overall manufacturing process is complex and costly.

[0004] Rail grinding is usually carried out under poor working conditions. Sometimes, the grinding device may derail when the grinding car is moving. Once derailed, the grinding head will inevitably be damaged because it is located at the bottom of the car. The grinding head is the most expensive piece of equipment in the grinding car, which will cause great economic losses.

[0005] Rail grinding machines generate a large amount of grinding dust during rail grinding operations, which poses a significant threat to the health of workers and pollutes the surrounding environment. Furthermore, the grinding process produces sparks and high temperatures, and the dust itself increases the risk of fire. To prevent dust accumulation, rail grinding machines are equipped with dust collection devices to filter and collect the dust generated during grinding. Once the collected dust reaches a certain level, the device must be emptied before reuse. For fire prevention, fire extinguishers are typically provided, employing a passive approach to fire control.

[0006] like Figure 2As shown, the dust collection device 3 installed on the frame 101 of the rail grinding vehicle has two sets of dust discharge doors 304 below it. When a certain amount of dust is collected, the doors 304 are opened for manual cleaning. During manual cleaning, operators must wear full protective gear, including protective clothing and masks. The process is difficult, time-consuming, and labor-intensive, especially in hot weather, which further complicates the work. Utility Model Content

[0007] The purpose of this utility model is to provide a motor-driven, bidirectional control rail grinding vehicle. The single grinding vehicle has driver's cabs at both ends, enabling convenient bidirectional control. Each grinding unit provides high precision in grinding wheel placement. The vehicle is compact in size, has a large grinding range, and is structurally sound, safe, reliable, and easy to manufacture. It can operate independently, effectively repairing various types of rail defects, improving wheel-rail relationships, and increasing rail lifespan. It also features a derailment protection device to prevent damage to the grinding unit from derailment. The dust removal device automatically cleans dust, quickly clearing accumulated dust from the collection unit, simplifying operation, improving working conditions, shortening working time, and increasing efficiency. Operators can easily and effortlessly remove dust from the collection unit. A dust suppression and fire prevention device helps prevent fires.

[0008] The technical solution provided by this utility model is as follows:

[0009] A motor-driven bidirectional control rail grinding vehicle includes a frame 101, with a driver's cab 1 located above the front and rear ends of the frame 101.

[0010] The frame 101 is provided with a grinding device 2 at the lower center; the front and rear ends of the grinding device 2 are respectively provided with a pair of traveling wheels 201 that travel on the rails, and the inner side of the traveling wheels 201 is provided with a rail detection device 4 for detecting the position of the rails. When derailment is detected, an alarm signal is issued to trigger the stop protection and the grinding vehicle stops.

[0011] The grinding device 2 includes four sets of motor-driven grinding heads 202 on its left and right sides respectively. The grinding wheels of the grinding heads 202 grind the rails. The grinding device 2 is also equipped 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] The frame 101 is equipped with a dust collection device 3 for collecting grinding dust on top, and an automatic dust removal mechanism is provided at the bottom of the dust collection device 3 to automatically clean the dust inside the dust collection device 3.

[0013] Preferably, the driver's cab 1 is equipped with an operation control console, and the operation control 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 part of the sensor bracket 402 is mounted on the grinding device 2, and the lower end extends to the inner side of the rail of the running wheel 201 and is used to install the derailment sensor 401.

[0015] Preferably, the dust suppression and fire prevention device 5 includes eight sets 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 steel 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.

[0016] Preferably, the water outlet direction of the fan-shaped nozzle 501 forms an angle of 45 degrees with the horizontal plane.

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

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

[0019] The spiral sleeve 3011 is installed at both ends inside the bottom of the dust collection box 303. The front end extends out of one side of the dust collection box 303 and is provided with a dust outlet 3014; the rear end extends out of the other side of the dust collection box 303; the spiral push rod 3012 is located inside the spiral sleeve 3011, and the rear end is connected to the spiral drive mechanism; the spiral drive mechanism drives the spiral push rod 3012 to rotate and push the dust forward, automatically sucking the dust in through the dust inlet 3013 and discharging it through the dust outlet 3014, thus automatically cleaning the dust in the dust collection 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 inside the outer sleeve 3017 and its front end is coaxially connected to the spiral push rod 3012, and its rear end is connected to the output shaft of the motor reducer assembly 3015.

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

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

[0023] As can be seen from the technical solution provided by this utility model above, the embodiment of this utility model provides a motor-driven bidirectional control rail grinding vehicle. Each grinding vehicle has a driver's cab at both ends, enabling bidirectional control for convenient operation. A single grinding device provides high precision in the grinding wheel's impact point. The vehicle is small in size, has a large grinding range, a compact structure, is safe and reliable, and easy to manufacture. It can operate independently, effectively repairing various types of rail defects, improving wheel-rail relationships, and increasing rail service life. Simultaneously, it is equipped with a derailment protection device to prevent derailment and damage to the grinding device. The dust removal device can automatically clean dust, completing the cleaning of accumulated dust in the dust collection device in a short time, facilitating operator operation, improving working conditions, shortening working time, and increasing work efficiency. Operators can easily and effortlessly complete the dust removal work. A dust suppression and fire prevention device can prevent fires. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the front view structure of a rail grinding vehicle used in urban subways in the prior art.

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

[0027] Figure 3 This is a schematic diagram of the main structure of a motor-driven bidirectional control rail grinding vehicle provided in an embodiment of the present utility model.

[0028] Figure 4 A top view of the motor-driven bidirectional control rail grinding vehicle provided in an embodiment of this utility model;

[0029] Figure 5 A schematic diagram of the left-side structure of a motor-driven bidirectional control rail grinding vehicle provided in an embodiment of this utility model;

[0030] Figure 6A schematic diagram of the diesel generator drive device for a motor-driven bidirectional control rail grinding vehicle provided in an embodiment of this utility model.

[0031] Figure 7 A schematic diagram of the main structure of the power bogie of the motor-driven bidirectional control rail grinding vehicle provided in an embodiment of this utility model;

[0032] Figure 8 A top view of the power bogie structure of the motor-driven bidirectional control rail grinding vehicle provided in an embodiment of this utility model;

[0033] Figure 9 Schematic diagram of the rail inspection device for a motor-driven bidirectional control rail grinding vehicle provided in this embodiment of the utility model. Figure 1 ;

[0034] Figure 10 Schematic diagram of the rail inspection device for a motor-driven bidirectional control rail grinding vehicle provided in this embodiment of the utility model. Figure 2 ;

[0035] Figure 11 Schematic diagram of the dust suppression and fire prevention device for a motor-driven bidirectional control rail grinding vehicle provided in this embodiment of the utility model. Figure 1 ;

[0036] Figure 12 Schematic diagram of the dust suppression and fire prevention device for a motor-driven bidirectional control rail grinding vehicle provided in this embodiment of the utility model. Figure 2 ;

[0037] Figure 13 A schematic diagram of the main structure of the dust collection device of the motor-driven bidirectional control rail grinding vehicle provided in an embodiment of this utility model;

[0038] Figure 14 A rear view structural schematic diagram of the dust collection device of the motor-driven bidirectional control rail grinding vehicle provided in an embodiment of this utility model;

[0039] Figure 15 Right view structural schematic diagram of the dust collection device of the motor-driven bidirectional control rail grinding vehicle provided in the embodiment of this utility model;

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

[0041] Figure 17 A schematic diagram of the transmission assembly of the dust collection device for a motor-driven bidirectional control rail grinding vehicle provided in an embodiment of this utility model. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] First, the following explanations are provided for the terms that may be used in this article:

[0044] The term "and / or" means that either or both can be achieved simultaneously. For example, X and / or Y means that it includes both "X" or "Y" as well as the three cases of "X and Y".

[0045] The terms "comprising," "including," "containing," "having," or other similar semantic descriptions should be interpreted as non-exclusive inclusion. For example, including a technical feature element (such as raw material, component, ingredient, carrier, dosage form, material, size, part, component, mechanism, device, step, process, method, reaction conditions, processing conditions, parameter, algorithm, signal, data, product or article of manufacture, etc.) should be interpreted as including not only the expressly listed technical feature element, but also other technical feature elements that are not expressly listed and are well-known in the art.

[0046] The term "composed of" excludes any technical features not expressly listed. When used in a claim, it closes the claim to exclude all technical features other than those expressly listed, except for associated conventional impurities. If the term appears only in a clause of a claim, it limits the claim to the elements expressly listed in that clause; elements recited in other clauses are not excluded from the overall claim.

[0047] The term "parts by mass" indicates the mass ratio between multiple components. For example, if component X is described as x parts by mass and component Y as 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, one part by mass can be expressed as 1 kg or 3.1415926 kg, etc. The sum of the parts by mass of all components is not necessarily 100 parts; it can be greater than 100 parts, less than 100 parts, or equal to 100 parts. Unless otherwise stated, parts, proportions, and percentages mentioned herein are all measured by mass.

[0048] Unless otherwise explicitly specified or limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this document according to the specific circumstances.

[0049] When concentration, temperature, pressure, size, or other parameters are expressed as numerical ranges, such ranges should be understood to specifically disclose all ranges formed by any pairing of upper limits, lower limits, or preferred values ​​within that range, regardless of whether the range is explicitly stated; for example, if the numerical range "2 to 8" is stated, then that range should be interpreted to include ranges such as "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 stated, the numerical ranges described herein include both their endpoints and all integers and fractions within that range.

[0050] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” and “counterclockwise” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience and simplification of description and do not imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this document.

[0051] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0052] Example

[0053] like Figures 3 to 5As shown, a motor-driven bidirectional control rail grinding vehicle is used for rail grinding and repair in railways and subways. Structurally, it includes a frame 101, with a driver's cab 1 located at each of the front and rear ends. Each driver's cab 1 contains an operating control console, allowing operators to control the vehicle's operation via handles. Both driver's cabs 1 can perform all necessary rail grinding functions, including operation control, system monitoring, and emergency handling. The operating control consoles of the two driver's cabs 1 are interlocked; that is, the control permissions of both driver's cabs 1 are interlocked. When an operator in one driver's cab 1 is operating, the corresponding operation function in the other driver's cab 1 is automatically locked to prevent misoperation. Both driver's cabs 1 are equipped with electrical cabinets to meet the control requirements of grinding operations. The interlocking can be mechanical, electronic, or both.

[0054] In this example, refer to Figure 4 The area between the two driver cabs 1 above the frame 101 is the equipment installation area, and the two driver cabs 1 and the equipment installation area are respectively provided with pedestrian corridors 8 to facilitate the operation of personnel to enter and exit the driver cabs 1 and walk. The equipment installation area is provided with external corridors on the left and right sides to connect with the pedestrian corridors 8, forming the vehicle's external corridors, and the edges of the external corridors are provided with safety handrails 19.

[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 utilize existing technical solutions, and their locations can be designed reasonably, requiring only the provision of an external corridor and a pedestrian corridor 6; further details are omitted.

[0056] Here, the dust collection device 3 collects iron filings and dust generated during the steel grinding device's grinding of the rails, preventing dust pollution and protecting the environment. The pneumatic control device 11 and hydraulic control device 12 are used to control the braking and grinding devices. The pneumatic control device 11 includes a pneumatic 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 mounted on a steel frame, each corresponding to the diesel engine's air intake, coolant, and hydraulic oil cooling. The cooling fan is driven by a hydraulic motor.

[0057] In this example, the lower end of the frame 101 has a first air conditioner outdoor unit 14 and a brake valve assembly 15 at one end, and a second air conditioner outdoor unit 16 and a battery box 17 at the other end. The lower part of the frame 3 meets the installation and fixing requirements of the split-type air conditioner outdoor unit, and the two air conditioners are used by the two driver's cabs 1 respectively. The brake valve assembly 15 adopts a standard JZ7 braking system, and the battery box 17 consists of 20 DC 1.2V 170Ah lead-acid battery cells connected in series to form a DC 24V 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 one side of the grinding device 2 under the frame 101 and the power bogie 6 or driven bogie 7, respectively. 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 fire fighting. The water pump unit 18 provides a power source for the sprinkler system and fire fighting. The air source unit 21 provides dry compressed air for the entire vehicle. The compressed air is mainly used for the braking system, grinding device, and wind whistle. The air source unit 21 includes a standard-sized air compressor, air tank, and dryer to meet the air requirements for traction braking and auxiliary air.

[0059] In this example, the installation positions of the first outdoor air conditioning unit 14, the brake valve assembly 15, the second outdoor air conditioning unit 16, the battery box 17, the water pump unit 18, and the air source device 21 are not necessarily as described above. Technicians can arrange them reasonably according to the structure. The brake valve assembly 15, the battery box 17, the water pump unit 18, and the air source device 21 can adopt existing technical solutions, which will not be elaborated further.

[0060] like Figure 6 As shown, the diesel generator drive unit 9 can be set up in a separate diesel generator room, consisting of two louvered side walls and a top cover end wall. The diesel generator drive unit 9 provides stable power and electrical output for the rail grinding vehicle, including 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 is connected to the hydraulic pump 1201 of the hydraulic control device 12 and the grinding device 2. It is also connected to the generator 902 via a universal joint, driving the generator 902 to generate electricity. The generator 902 supplies power to the motor of the grinding device 2 and also powers the entire vehicle. The fuel tank 904 meets the fuel storage needs of the diesel engine 901.

[0061] In this example, refer to Figure 5 The frame 101 is equipped with coupler assemblies 20 at both ends. The coupler assemblies 20 use universal couplers that connect with relevant vehicle parts. For example, a No. 17 coupler can accurately connect with a C70 truck.

[0062] In this example, a grinding device 2 is located in the middle of the lower part of the frame 101. This example has only one grinding device 2, equipped with an eight-motor connected grinding wheel structure, i.e., "motor-driven," resulting in high precision in the grinding wheel's impact point. The grinding device 2 can employ existing technology, using a combination of electrical and hydraulic control to perform rail grinding operations. A power bogie 6 and a driven bogie 7 are respectively installed on both sides of the grinding device 2. Both the power bogie 6 and the driven bogie 7 employ a two-stage suspension system: a primary suspension with coil springs and a secondary suspension with rubber stack side bearings. The side bearings bear the entire weight of the upper equipment, ensuring good dynamic performance of the tractor. Figure 7 and 8 As shown, the power bogie 6 includes two sets of hydraulic motors 601 and two sets of gearboxes 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 gearboxes 602. Specifically, the power bogie 6 structurally includes an I-beam frame 605, four wheels 603, and two axles 604. The I-beam frame 605 is centrally symmetrical in an "I" shape, and the frame 101 is connected at the center of the straight arm of the I-beam frame 605; specifically, it is hinged to the frame 101 through a center pin 606. This connection method of the center pin is the same as the existing connection method between the power bogie and the frame 101, and will not be described again. Four wheels 603 are mounted on the lower ends of the two cross arms of the I-beam frame 605 through two axles 604. Two sets of gearboxes 602 are respectively installed in the middle of the two axles 604. The hydraulic motor 601 is connected to the gearboxes 602 and drives the axles 604 to rotate through the gearboxes 602, providing power to the power bogie 6. The driven bogie 7 does not have the hydraulic motor 601 and gearboxes 602. The rest of its structure is the same as that of the power bogie 6, and will not be described in detail.

[0063] In this example, as Figure 9 and 10 As shown, the grinding device 2 includes a pair of traveling wheels 201 at its front and rear ends, respectively, that travel on the rails. The traveling wheels 201 are fixed to the frame of the grinding device 2 via traveling wheel brackets 203, specifically using bolts. A rail detection device 4 is provided inside each traveling wheel 201 to detect the rail position. When derailment is detected, an alarm signal is emitted, triggering a stop protection mechanism, 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 mounted on the grinding device 2, specifically by bolts to the frame of the grinding device 2 or directly to the traveling wheel bracket 203. The lower end of the sensor bracket 402 extends above the rail inside the traveling wheel 201 and houses the derailment sensor 401. (This example is for reference only.) Figure 9The sensor bracket 402 is a U-shaped bracket, with its two arms fixed to both sides of the traveling wheel bracket 203 by bolts. The crossbeam of the U-shaped bracket spans over the rail, and a derailment sensor 401 is installed in the middle. The derailment sensor 401 can be 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 send a corresponding signal, issuing an alarm signal. Upon receiving this signal, the control terminal of the grinding vehicle will trigger the stop protection, and the grinding vehicle will stop. This ensures that when the traveling wheel 201 of the grinding device 2 is on the rail and is being normally pulled, the derailment sensor 401 can detect the rail and send a normal signal; when the traveling wheel 201 of the grinding device 2 derails from the rail, the derailment sensor 401 will no longer be able to detect the rail, will issue an alarm signal, and the rail grinding vehicle will trigger the braking stop protection, effectively reducing drag damage to the grinding device caused by derailment.

[0064] like Figure 11 and 12 As shown, the grinding device 2 includes four sets of motor-driven grinding heads 202 on its left and right sides, respectively. The grinding wheels of the grinding heads 202 grind the rails. The grinding device 2 is also equipped with a dust suppression and fire prevention device 5, which sprays water mist onto the grinding area where the grinding wheels grind the rails. Specifically, the dust suppression and fire prevention device 5 includes eight sets of fan-shaped nozzles 501 and connecting pipes 502. The fan-shaped nozzles 501 are installed on the outside of the grinding heads 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 of the fan-shaped nozzle 501 has an angle of 30-60 degrees with the horizontal plane. It is generally controlled at 45°. An angle closer to 60° will result in a large amount of water mist leaking out, causing dust pollution in the surrounding space of the work area and wasting water. An angle closer to 30° will easily spray water mist onto the surface of the rail, affecting normal grinding work. The water outlet direction of the fan-shaped nozzle 501 can also be called the "spray path 503". Its target is the bottom of the rail below the grinding area, not the grinding area where the grinding wheel contacts the rail. The dust generated during grinding will fall a certain distance, and targeting the bottom of the rail below the grinding area provides the best dust suppression and fire prevention effect.

[0066] The fan-shaped nozzle 501 has a large spray area and saves water. After installation, the fan-shaped nozzle 501 forms an angle of approximately 45° with the horizontal, allowing for precise spraying towards the dusty area generated during grinding. The fan-shaped nozzle 501 is connected to the connecting pipe 502, which is fixed to the frame of the grinding device 2 with pipe clamps. By spraying water onto the dusty area generated during grinding, it absorbs dust from the air, thereby achieving dust suppression, reducing the temperature of the grinding area, and also playing a role in fire prevention. The 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 provided above the frame 101. An automatic dust removal mechanism is provided at the bottom of the dust collection device 3 to automatically clean the dust inside. 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 working, allowing air to be discharged; when the dust collection fan is not working, the louvers automatically close to prevent rainwater from falling into the dust collection box, which is existing technology. The dust collection fan 305 collects the grinding dust through 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 independently controlled, horizontally parallel tubular screw conveyors 301 and two dust collection hoppers 302. The two dust collection hoppers 302 are installed side by side in the lower part of the dust collection box 303 of the dust collection device 3 to receive the grinding dust filtered by the filter cartridge 306 in the dust collection box 303. The dust collection hopper 302 has a V-shaped cross-section, and the tubular screw conveyors 301 are installed in the dust collection box 303 below the bottom opening of the V-shape. The tubular screw conveyor 301 includes a screw sleeve 3011, a screw pusher 3012, and a screw drive mechanism. The screw sleeve 3011 is located below the dust collection hopper 302, and a dust inlet 3013 is opened above the screw sleeve 3011. The dust inlet 3013 is connected to the V-shaped bottom opening of the dust collection hopper 302. Specifically, the dust inlet 3013 has a rectangular opening along the axial direction of the screw sleeve 3011. The rectangular opening has the same size as the V-shaped bottom opening of the dust collection hopper 302, and they pass through and connect to each other to prevent grinding dust from leaking out.

[0069] The ash collection hopper 302 here can be two V-shaped cross sections, that is, inverted square pyramids. A space can be left outside the ash collection hopper 302 along the axial direction of the spiral sleeve 3011 to install the spiral drive mechanism.

[0070] The spiral sleeve 3011 is installed at 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 quick-connect ash discharge connector 3019 is installed at the dust outlet 3014 to connect to the ash discharge pipeline or mechanism. The rear end of the spiral sleeve 3011 extends out of the other side of the dust collection box 303. The spiral push rod 3012 is located inside the spiral sleeve 3011, and its rear end is connected to the spiral drive mechanism. The spiral drive mechanism drives the spiral push rod 3012 to rotate and push the dust forward, automatically sucking the dust into the dust inlet 3013 and discharging it out of the dust outlet 3014, thus automatically cleaning the dust in the dust collection device 3.

[0071] The aforementioned helical drive mechanism includes a motor reducer assembly 3015 and a transmission assembly 3016; as 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 achieved using flange bolts 3019. The transmission shaft 3018 is installed inside the outer sleeve 3017, and its front end 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, which can be achieved using a flat key 30161. Furthermore, the drive shaft 3018 and the outer sleeve 3017 are installed through a series of shaft components, specifically including: end cover 30162, first skeleton oil seal 30163, spacer ring 30164, outer elastic retaining ring 30165, deep groove ball bearing 30166, spacer sleeve 30167, tapered roller bearing 30168, second skeleton oil seal 30169, and inner elastic retaining ring assembly 30160. The installation method is described in [reference needed]. Figure 16 This is common knowledge and will not be elaborated further.

[0072] advantage:

[0073] I. Designed with dual driver's cabs, enabling bidirectional control and convenient operation. The overall vehicle size is compact, allowing for a large grinding range. With only one grinding device, there is no relative error, ensuring high precision in the grinding wheel's impact point.

[0074] 2. A derailment protection device is provided to prevent derailment and damage to the grinding device.

[0075] Third, the dust removal device can automatically clean up dust, completing the removal of accumulated dust within the dust collection unit in a short time. This facilitates operation for workers, improves working conditions, shortens working time, and increases work efficiency. Simultaneously, the automatic dust removal mechanism includes two independently controlled, horizontally parallel tubular screw conveyors, ensuring high reliability. Even if one tubular screw conveyor malfunctions, the other can still complete the task. Furthermore, the tubular screw conveyor is housed within the dust collection box 303, modularly designed as an integral unit with the dust collection device, saving internal space on the vehicle frame and facilitating installation and manufacturing. This streamlined operation and improved work efficiency further enhance the convenience for operators.

[0076] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A motor-driven bidirectional control rail grinding vehicle, characterized in that, Includes a frame (101), with a driver's cab (1) located above the front and rear ends of the frame (101); The frame (101) is provided with a grinding device (2) in the middle of the lower part; the grinding device (2) includes a pair of running wheels (201) that travel on the rails at the front and rear ends respectively. The inner side of the running wheels (201) is provided with a rail detection device (4) for detecting the position of the rails. When derailment is detected, an alarm signal is issued to trigger the stop protection and the grinding vehicle stops. The grinding device (2) includes four sets of motor-driven grinding heads (202) on its left and right sides respectively. The grinding wheels of the grinding heads (202) grind the rails. The grinding device (2) is also equipped with a dust suppression and fire prevention device (5). The dust suppression and fire prevention device (5) sprays water mist onto the grinding area where the grinding wheel grinds the rails. The frame (101) is provided with a dust collection device (3) for collecting grinding dust on the top, and an automatic dust removal mechanism is provided at the bottom of the dust collection device (3) to automatically clean the dust in the dust collection device (3).

2. The electrically motor-driven bidirectional controlled rail grinder according to claim 1, characterized in that The driver's cab (1) is equipped with an operation control console, and the operation control consoles of the two driver's cabs (1) are interlocked.

3. The electrically motor-driven bidirectional controlled rail grinder according to claim 1 or 2, characterized in that The rail detection device (4) includes a derailment sensor (401) and a sensor bracket (402). The upper part of the sensor bracket (402) is mounted on the grinding device (2), and the lower end extends to the inner side of the rail of the running wheel (201) and is used to install the derailment sensor (401).

4. The electrically motor-driven bidirectional controlled rail grinder according to claim 1 or 2, characterized in that The dust suppression and fire prevention device (5) includes eight sets 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 steel 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 electrically motor-driven bidirectional controlled rail grinder according to claim 4, characterized in that The water outlet of the fan-shaped nozzle (501) has an angle of 45 degrees with the horizontal plane.

6. The electrically motor-driven bidirectional controlled rail grinder according to claim 1 or 2, characterized in that The automatic dust removal mechanism includes two independently controlled horizontally parallel tubular screw conveyors (301) and two dust collection hoppers (302). The two dust collection hoppers (302) are installed side by side in the lower part of the dust collection box (303) of the dust collection device (3) to receive the dust in the dust collection box (303). The cross-section of the dust collection hopper (302) is V-shaped, and the tubular screw conveyor (301) is installed in the dust collection box (303) below the bottom opening of the V-shape.

7. The electrically motor-driven bidirectional controlled rail grinder according to claim 6, characterized in that The tubular screw conveyor (301) includes a screw sleeve (3011), a screw pusher (3012), and a screw drive mechanism; the screw sleeve (3011) is located below the ash collection hopper (302), and a dust inlet (3013) is opened above the screw sleeve (3011); the dust inlet (3013) is connected to the V-shaped bottom opening of the ash collection hopper (302); The spiral sleeve (3011) is installed at both ends inside the bottom of the dust collection box (303), with the front end extending out of one side of the dust collection box (303) and having a dust outlet (3014); the rear end extends out of the other side of the dust collection box (303); the spiral push rod (3012) is located inside the spiral sleeve (3011), and the rear end is connected to the spiral drive mechanism; the spiral drive mechanism drives the spiral push rod (3012) to rotate and push the dust forward, automatically sucking the dust in through the dust inlet (3013) and discharging it through the dust outlet (3014), automatically cleaning the dust in the dust collection device (3).

8. The electrically motor-driven bidirectional controlled rail grinder according to claim 7, characterized in that 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 inside the outer sleeve (3017) and its front end is coaxially connected to the spiral push rod (3012). Its rear end is connected to the output shaft of the motor reducer assembly (3015).

9. The electrically motor-driven bidirectional controlled rail grinder according to claim 7, characterized in that The spiral sleeve (3011) is provided with a quick-connect ash discharge connector (3019) at the front end.

10. The electrically motor-driven bidirectional controlled rail grinder according to claim 1 or 2, characterized in that The area between the two driver cabs (1) above the frame (101) is the equipment installation area, and the two driver cabs (1) and the equipment installation area are respectively provided with pedestrian corridors (8); the equipment installation area is provided with external corridors on the left and right sides to connect with the pedestrian corridors (8); the edge of the external corridor is provided with safety handrails (19).

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