Automatic grinding equipment for railway vehicle

Abstract

The invention provides automatic grinding equipment for railway vehicles, which belongs to the technical field of railway vehicle grinding and comprises a movable lifting mechanism, two transverse moving modules, two grinding mechanisms, two automatic locking mechanisms and a control cabinet. The movable lifting mechanism comprises a movable trolley and a hydraulic lifting platform; the two transverse moving modules are symmetrically arranged on the left side and the right side of the upper end face of the hydraulic lifting platform correspondingly. The two grinding mechanisms are mounted on the two transverse moving modules in a one-to-one correspondence manner; each grinding mechanism comprises a grinding mounting seat, a power motor and a grinding working part; the two automatic locking mechanisms are symmetrically arranged on the left side and the right side of the hydraulic lifting platform correspondingly. A control system is arranged in the control cabinet, a plurality of control buttons are arranged on the top of the control cabinet, and an operation screen is arranged on the side wall of the control cabinet. According to the automatic grinding equipment for the railway vehicle, the labor intensity is reduced, the efficiency is improved, harm to human bodies caused by noise and dust is avoided, and possible harm to personnel is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of railway vehicle grinding, and more specifically, relates to an automatic grinding device for railway vehicles. Background Art

[0002] Railway freight open cars are mainly used to transport bulk goods such as coal, ore, mining and construction materials, wood, steel, etc. The buckle seat and the lower side beam of the car body are connected by a riveted structure. During the operation of the open car, it is affected by factors such as weather and cargo material. There is a large amount of rust and corrosion at the joint between the buckle seat and the lower side beam of the car body, and the rust is hard and difficult to remove.

[0003] When inspecting open cars, the buckle seat and the lower side beam of the car body need to be disassembled and replaced with new ones. In order to ensure the assembly gap and riveting quality of the new buckle seat, it is usually necessary to grind and remove the rust residue at the assembly position of the buckle seat with a handheld grinding wheel. Some buckle seats and the lower side beam joints are severely corroded, and the corroded parts need to be welded flat and polished with a grinding wheel to ensure that the gap between the buckle seat and the lower side beam meets the requirements after assembly. This kind of manual handheld grinding with a grinding wheel is labor-intensive and inefficient. The noise and dust from close-range operation are harmful to the human body. If the operation is improper, the grinding wheel may collapse and cause harm to personnel. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic grinding device for railway vehicles, aiming to solve the problems of high labor intensity and low efficiency of manual hand-held grinding with a grinding wheel, harm to the human body caused by noise and dust from close-range operation, and damage to personnel caused by grinding wheel collapse if operated improperly.

[0005] To achieve the above object, the technical solution adopted by the present invention is: to provide an automatic grinding device for railway vehicles, comprising: A mobile lifting mechanism, the mobile lifting mechanism comprising a mobile trolley and a hydraulic lifting platform arranged on the upper end surface of the mobile trolley; Two transverse movement modules, the two transverse movement modules are symmetrically arranged on the left and right sides of the upper end surface of the hydraulic lifting platform; Two grinding mechanisms, the two grinding mechanisms are mounted on the two transverse moving modules in a one-to-one correspondence, the grinding mechanisms include a grinding mounting seat, a power motor and a grinding working part, the grinding mounting seat is arranged on the corresponding transverse moving module, the power motor is arranged on the grinding mounting seat, the grinding working part is mounted on the driving end of the power motor, and the power motor is used to drive the grinding working part to rotate; Two automatic locking mechanisms, the two automatic locking mechanisms are symmetrically arranged on the left and right sides of the hydraulic lifting platform, the automatic locking mechanism comprises a linear drive assembly and a locking rod, the rear end of the locking rod is connected to the front end of the linear drive assembly, and the front end of the locking rod is provided with a hook-shaped locking portion bent upward and backward; A control cabinet having a built-in control system, a plurality of control buttons electrically connected to the control system are arranged on the top of the control cabinet, the plurality of control buttons are electrically connected to the transverse movement module, the grinding mechanism and the automatic locking mechanism respectively, an operation screen electrically connected to the control system is arranged on the side wall of the control cabinet, the operation screen is electrically connected to the transverse movement module, the grinding mechanism and the automatic locking mechanism respectively.

[0006] In a possible implementation, a plurality of universal wheels are provided at the bottom of the mobile vehicle, at least one of the universal wheels is provided with a check device, and a connecting chain is provided on the hydraulic lifting platform, and the connecting chain is connected to the check device.

[0007] In a possible implementation, a beam support is provided on the rear side of the upper end surface of the hydraulic lifting platform, and both ends of the beam support extend to the outside of the hydraulic lifting platform respectively, and the two transverse movement modules are laterally installed at the two ends of the upper end surface of the beam support respectively.

[0008] In a possible implementation, the lateral movement module includes: A transverse sliding rail, the transverse sliding rail is transversely mounted on one side of the upper end surface of the beam support; A slide, the slide is slidably arranged on the transverse slide rail, and the grinding mounting seat is arranged on the slide on the same side; A transverse motor is installed at one inner end of the transverse slide rail, and is used to drive the slide table to slide along the length direction and is set on the transverse slide rail.

[0009] In a possible implementation, grinding the mounting seat includes: A connecting plate, the connecting plate being longitudinally connected to the front side of the upper end face of the slide; A mounting plate, the mounting plate is arranged parallel and spaced apart on the front side of the connecting plate, and the power motor is installed on the front side of the mounting plate; A plurality of guide rods are circumferentially arranged between the connecting plate and the mounting plate, one end of the guide rod is fixed to the connecting plate, and the other end of the guide rod passes through the mounting plate and is installed with a limiting portion. An elastic module is arranged between the connecting plate and the mounting plate and is located inside the plurality of guide rods.

[0010] In a possible implementation, the elastic module includes a plurality of springs, which are arranged circumferentially and located between the connecting plate and the mounting plate. A plurality of positioning columns are provided on opposite sides of the connecting plate and the mounting plate, and both ends of the spring are respectively mounted on two opposite positioning columns.

[0011] In a possible implementation, a protective cover is installed on the front side of the mounting plate, the protective cover is arranged around the upper part of the grinding working part, and the front end of the grinding working part protrudes out of the protective cover.

[0012] In a possible implementation, the grinding working part includes a cylindrical grinding wheel, the rear end of the cylindrical grinding wheel is provided with a connection hole connected to the driving end of the power motor, and the front end of the cylindrical grinding wheel forms an annular grinding port.

[0013] In a possible implementation, the linear drive assembly includes: A longitudinal beam support, the longitudinal beam support being arranged on one side of the hydraulic lifting platform; An electric push rod, the electric push rod is mounted on the rear end of the upper end surface of the longitudinal beam support, and the rear end of the locking rod is connected to the front end of the electric push rod; A linear slide rail is arranged on the front side of the upper end face of the longitudinal beam support along the length direction, and the locking rod is slidably arranged on the linear slide rail along the length direction.

[0014] In a possible implementation, the hook-shaped locking portion includes a longitudinal rod, a transverse rod and a compaction pad, the lower end of the longitudinal rod is connected to the front end of the locking rod, the front end of the transverse rod is connected to the upper end of the longitudinal rod, and the compaction pad is arranged at the rear end of the transverse rod, and the locking rod, the longitudinal rod and the transverse rod together constitute an avoidance recess for avoiding the lower area of ​​the side beam to be polished.

[0015] The beneficial effect of the automatic grinding equipment for railway vehicles provided by the present invention is that: compared with the prior art, the equipment is moved to the grinding position of the open car by moving the trolley, and the linear drive assembly is started by the corresponding control button. The linear drive assembly drives the locking rod to move forward and insert it into the lower side of the side beam of the open car. The hook-shaped locking part at the front end of the locking rod is located on the inner side of the side beam. The transverse movement module is started by the corresponding control button to roughly adjust the position of the grinding working part of the grinding mechanism relative to the outer grinding surface of the side beam, and the hydraulic lifting platform is raised by pedaling until the grinding working part is aligned with the center height of the outer grinding surface of the side beam. After the rough adjustment of the position is completed, the linear drive assembly is started again by the corresponding control button, and the linear drive assembly drives the locking rod to move backward so that the hook-shaped locking part at the front end of the locking rod abuts against the inner side of the side beam, and the grinding working part abuts against the front side of the side beam. The power motor is started by the corresponding control button, and the power motor drives the grinding work part to start and grind the side beam. After that, the transverse movement module is started again by the corresponding control button, and the two transverse movement modules respectively drive the two grinding work parts to reciprocate and grind the outer side of the side beam along the length direction. After the side beam is polished, the above-mentioned mechanisms return to the initial position. The automatic grinding equipment for railway vehicles provided by the present invention can replace manual grinding, reduce labor intensity, improve efficiency, avoid the problem of noise and dust causing harm to the human body, and avoid the harm that the grinding wheel collapse may cause to personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0017] Figure 1 A front view of the working state of the railway vehicle automatic grinding equipment provided by the present invention; Figure 2 A top view of the railway vehicle automatic grinding equipment provided by the present invention in working state; Figure 3 for Figure 2 A partial enlarged view of the M in the middle; Figure 4 A three-dimensional diagram of the railway vehicle automatic grinding equipment provided by the present invention without the moving trolley; Figure 5 A three-dimensional diagram of the cylindrical grinding wheel provided by the present invention.

[0018] In the figure: 1. Mobile trolley; 2. Hydraulic lifting platform; 3. Universal wheel; 4. Checker; 5. Connecting chain; 6. Crossbeam support; 7. Transverse slide rail; 8. Slide; 9. Transverse motor; 10. Connecting plate; 11. Mounting plate; 12. Guide rod; 13. Spring; 14. Positioning column; 15. Protective cover; 16. Cylindrical grinding wheel; 17. Power motor; 18. Longitudinal beam support; 19. Electric push rod; 20. Linear slide rail; 21. Longitudinal rod; 22. Cross bar; 23. Compacting pad; 24. Avoidance recess; 25. Locking rod; 26. Control cabinet; 27. Control button; 28. Operation screen. DETAILED DESCRIPTION In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] Unless explicitly defined otherwise, the use of terms such as "first," "second," or "third," etc., are intended to distinguish different objects rather than to describe a specific order.

[0020] Unless otherwise expressly defined, directional words such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", "high", "low", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, so they cannot be understood as limiting the specific scope of protection of the present invention.

[0021] See also Figures 1 to 4, an automatic grinding device for railway vehicles provided by the present invention is now described. An automatic grinding device for railway vehicles, comprising a mobile lifting mechanism, two transverse shifting modules, two grinding mechanisms, two automatic locking mechanisms and a control cabinet 26. The mobile lifting mechanism comprises a mobile trolley 1 and a hydraulic lifting platform 2 arranged on the upper end surface of the mobile trolley 1; the two transverse shifting modules are symmetrically arranged on the left and right sides of the upper end surface of the hydraulic lifting platform 2; the two grinding mechanisms are installed on the two transverse shifting modules one by one, and the grinding mechanism comprises a grinding mounting seat, a power motor 17 and a grinding working part, the grinding mounting seat is arranged on the corresponding transverse shifting module, the power motor 17 is arranged on the grinding mounting seat, and the grinding working part is installed on the driving end of the power motor 17, and the power motor 17 is used to drive the grinding working part to rotate; the two automatic locking mechanisms are symmetrically arranged on the hydraulic lifting platform On the left and right sides of the platform 2, the automatic locking mechanism includes a linear drive assembly and a locking rod 25, the rear end of the locking rod 25 is connected to the front end of the linear drive assembly, and the front end of the locking rod 25 has a hook-shaped locking portion bent upward and backward; the control cabinet 26 has a built-in control system, and the top of the control cabinet 26 is provided with a plurality of control buttons 27 electrically connected to the control system, and the plurality of control buttons 27 are respectively electrically connected to the transverse movement module, the grinding mechanism and the automatic locking mechanism, and the side wall of the control cabinet 26 is provided with an operating screen 28 electrically connected to the control system, and the operating screen 28 is respectively electrically connected to the transverse movement module, the grinding mechanism and the automatic locking mechanism.

[0022] The present invention provides an automatic grinding device for railway vehicles. Compared with the prior art, the device is moved to the grinding position of the open car by moving the trolley 1, and the linear drive assembly is started by the corresponding control button 27. The linear drive assembly drives the locking rod 25 to move forward and insert it into the lower side of the side beam of the open car. The hook-shaped locking part at the front end of the locking rod 25 is located on the inner side of the side beam. The transverse movement module is started by the corresponding control button 27 to roughly adjust the position of the grinding working part of the grinding mechanism relative to the outer grinding surface of the side beam. The hydraulic lifting platform 2 is raised by pedaling until the grinding working part is aligned with the center height of the outer grinding surface of the side beam. After the rough adjustment of the position is completed, the linear drive assembly is started again by the corresponding control button 27, and the linear drive assembly drives the locking rod 25 to move backward, so that the hook-shaped locking part at the front end of the locking rod 25 abuts against the inner side of the side beam, and the grinding working part abuts against the front side of the side beam. The power motor 17 is started by the corresponding control button 27, and the power motor 17 drives the grinding work part to start and grind the side beam. After that, the transverse movement module is started again by the corresponding control button 27, and the two transverse movement modules respectively drive the two grinding work parts to reciprocate and grind the outer side of the side beam along the length direction. After the side beam is polished, the above-mentioned mechanisms return to the initial position. The automatic grinding equipment for railway vehicles provided by the present invention can replace manual grinding, reduce labor intensity, improve efficiency, avoid the problem of noise and dust causing harm to the human body, and avoid the harm that the grinding wheel collapse may cause to personnel.

[0023] See also Figure 1 The bottom of the mobile trolley 1 is provided with a plurality of universal wheels 3, at least one of which is provided with a stopper 4, and a connecting chain 5 is provided on the hydraulic lifting platform 2, and the connecting chain 5 is connected to the stopper 4. The mobile trolley 1 has a rectangular platform, and wheel frames are respectively installed at the four corners of the lower end surface of the rectangular platform, and the universal wheels 3 are installed on the wheel frames one by one. The mobile trolley 1 can be moved in any direction through the universal wheels 3. In order to enable the grinding equipment to travel in a straight line when traveling over a long distance, a stopper 4 is installed at any universal wheel 3, and the stopper 4 is connected to the hydraulic lifting platform 2 through the connecting chain 5. The stopper 4 has a structure that can be inserted into the shaft of the wheel frame and the universal wheel 3 to prevent the universal wheel 3 from turning. When the platform is raised for operation, the stopper 4 is automatically pulled out without affecting the automatic alignment of the equipment.

[0024] A crossbeam support 6 is arranged on the rear side of the upper end surface of the hydraulic lifting platform 2. The crossbeam support 6 is made of U-shaped steel. The U-shaped steel opening is welded downward on the upper end surface of the hydraulic lifting platform 2. The U-shaped steel extends along the left and right directions of the hydraulic lifting platform 2 and extends to the outside of the hydraulic lifting platform 2 respectively. Two transverse movement modules are respectively installed horizontally at the two ends of the upper end surface of the crossbeam support 6.

[0025] See also Figure 1 and Figure 2The transverse movement module includes a transverse movement rail 7, a slide 8 and a transverse movement motor 9. The transverse movement rail 7 is installed transversely on one side of the upper end surface of the beam support 6; the slide 8 is slidably set on the transverse movement rail 7, and the grinding mounting seat is set on the slide 8 on the same side; the transverse movement motor 9 is installed on the inner end of the transverse movement rail 7, and the transverse movement motor 9 is used to drive the slide 8 to slide along the length direction and be set on the transverse movement rail 7. The transverse movement rail 7 is installed transversely on one side of the upper end surface of the beam support 6. The steel material used has the characteristics of high strength and low deformation. After the rolling process, the surface flatness is high, which not only ensures the stability of the slide 8 when sliding, but also can withstand long-term repeated friction stress. In addition, in order to further optimize the operating environment of the slide 8, tiny oil guide grooves are designed on both sides of the transverse movement rail 7. With the automatic lubrication system, it can continuously provide the slide 8 with just the right amount of lubrication, reduce wear, and extend the service life. The slide 8 slides along the length direction of the transverse slide rail 7. The main body of the slide 8 is made of aluminum alloy. While ensuring a certain strength, it effectively reduces the overall weight, which is conducive to quick start and stop and precise positioning. The slider part at the bottom is inlaid with high-precision ball bearings to ensure that the rolling friction coefficient between the slide 8 and the transverse slide rail 7 is low, ensuring the smoothness of the sliding of the slide 8. The transverse motor 9 uses a high-quality motor with high torque output and precise speed regulation. It is stably installed in the specified position and is connected to the slide 8 through a precise transmission system, such as a synchronous belt, a lead screw, etc. (depending on the actual design). After receiving the command from the control system, the transverse motor 9 starts quickly and accurately drives the slide 8 to slide along the length direction of the transverse slide rail 7 to achieve fast and precise position adjustment.

[0026] See also Figure 3The grinding mounting seat includes a connecting plate 10, a mounting plate 11, a plurality of guide rods 12 and an elastic module. The connecting plate 10 is longitudinally connected to the front side of the upper end face of the slide 8; the mounting plate 11 is arranged in parallel and spaced relation to the front side of the connecting plate 10, and the power motor 17 is installed on the front side of the mounting plate 11; a plurality of guide rods 12 are circumferentially arranged between the connecting plate 10 and the mounting plate 11, one end of the guide rod 12 is fixed to the connecting plate 10, and the other end of the guide rod 12 passes through the mounting plate 11 and is installed with a limiting part, and the elastic module is arranged between the connecting plate 10 and the mounting plate 11 and is located inside the plurality of guide rods 12. The connecting plate 10 is longitudinally and firmly connected to the front side of the upper end face of the slide 8, and the connecting plate 10 is integrally formed with the slide 8, so as to build a platform for the entire grinding mounting seat to work in coordination with the slide 8, thereby ensuring the stability of subsequent components during horizontal movement, so that the grinding operation can be accurately positioned in the target area. The mounting plate 11 is also arranged longitudinally, and is arranged in parallel and spaced relation at the front side of the connecting plate 10. The power motor 17 is stably mounted on the front side of the mounting plate 11. When the motor is running, it generates power, which drives the grinding working part connected thereto to rotate, and directly acts on the surface of the workpiece to be polished. A plurality of guide rods 12 located between the connecting plate 10 and the mounting plate 11 provide guidance for the relative movement of the two. One end of the guide rod 12 is fixed on the connecting plate 10, and the other end passes through the mounting plate 11 and is installed with a limiter. The existence of the limiter effectively prevents the excessive displacement of the mounting plate 11, and ensures that the movement of the mounting plate 11 relative to the connecting plate 10 is always within a controllable range during the polishing process, so as to avoid the damage to the polishing accuracy due to deviation. The elastic module located inside the plurality of guide rods 12 is usually made of elastic material and has good elastic recovery ability. During the polishing process, when the polishing tool encounters uneven hardness or small protrusions on the surface of the workpiece, the elastic module can quickly play a buffering role, absorb the impact force generated instantly, and avoid the rigid impact from causing damage to the polishing tool, the power motor 17 and the entire mounting seat. At the same time, this elastic buffer also makes the grinding pressure more evenly distributed on the workpiece surface, further improving the grinding quality and ensuring that every grinding mark is delicate and uniform.

[0027] See also Figure 3The elastic module includes a plurality of springs 13, which are arranged circumferentially and located between the connecting plate 10 and the mounting plate 11. A plurality of positioning posts 14 are provided on opposite sides of the connecting plate 10 and the mounting plate 11, and the two ends of the spring 13 are respectively mounted on two opposite positioning posts 14. These positioning posts 14 not only provide a stable installation position for the spring 13, but also are the key to ensure that the spring 13 maintains a correct posture and force direction during operation. The material of the positioning post 14 is generally selected from metals with higher hardness, such as stainless steel, and is precision machined to ensure its dimensional accuracy and surface finish. Preferably, the diameter of the positioning post 14 is slightly smaller than the inner diameter of the spring 13, generally less than 1-2 mm, to ensure the stability and guidance of the spring 13, and the sum of the lengths of the two opposite positioning posts 14 is less than 1 / 2 of the length of the spring 13, which is convenient for the disassembly and assembly of the spring 13.

[0028] When vibration or impact force is generated during the grinding process, the spring 13 can be uniformly compressed and stretched under the constraint of the positioning column 14, effectively buffering and dispersing energy. The circumferentially arranged springs 13 can balance the forces in all directions, avoiding uneven grinding or equipment damage caused by excessive local forces. For example, when grinding irregularly shaped workpieces, the springs 13 at different positions will independently adjust the elastic deformation according to the actual contact conditions, ensuring that the grinding tool always maintains appropriate pressure with the workpiece surface, thereby achieving high-precision, high-quality grinding effects.

[0029] See also Figure 1 , Figure 3 and Figure 4 A protective cover 15 is installed on the front side of the mounting plate 11. The protective cover 15 is arranged around the upper part of the grinding working part and the front end of the grinding working part protrudes from the protective cover 15. The structural design of the protective cover 15 fully takes into account the actual needs of the grinding work. Its overall shape is customized according to the contour of the grinding working part to ensure accurate protection of the grinding area. The surrounding method ensures that the upper part of the grinding working part is fully protected when it is in operation, preventing debris from splashing upward and avoiding damage to the operator's face, eyes and surrounding equipment. In addition, the protective cover 15 protrudes from the front end of the grinding working part in order to ensure safety protection while not affecting the normal progress of the grinding work. The front end of the grinding working part needs to directly contact the surface of the workpiece for grinding operations, and the protruding design enables it to fit on the surface of the workpiece to be polished.

[0030] Preferably, the front edge of the protective cover 15 adopts a smooth transition design to avoid accidental injuries to operators caused by sharp corners, further improving the overall safety and practicality.

[0031] See also Figure 3 and Figure 5, the grinding working part includes a cylindrical grinding wheel 16, the rear end of the cylindrical grinding wheel 16 is provided with a connection hole connected to the driving end of the power motor 17, and the front end of the cylindrical grinding wheel 16 forms an annular grinding port. In the field of industrial grinding, the grinding working part is a key part that directly acts on the surface of the workpiece to achieve material removal and surface finishing. The quality of its design is directly related to the grinding quality and efficiency. Among them, the cylindrical grinding wheel 16 constitutes the core component of the grinding working part. The rear end of the cylindrical grinding wheel 16 is equipped with a connection hole connected to the driving end of the power motor 17, which ensures that the strong rotational torque generated by the power motor 17 can be efficiently and stably transmitted to the cylindrical grinding wheel 16, so that the grinding wheel can quickly reach the predetermined working speed. The front end of the cylindrical grinding wheel 16 forms an annular grinding port. When grinding flat workpieces, it can contact the workpiece surface over a large area. Compared with traditional point or line grinding tools, it greatly improves the uniformity of grinding and effectively guarantees the flatness of the grinding area. Secondly, for some grinding tasks with larger longitudinal dimension requirements, the specially designed large-diameter cylindrical grinding wheel 16 can match them. There is no need to frequently adjust the grinding position and increase the grinding displacement as with small-diameter grinding tools. Only one positioning of the cylindrical grinding wheel 16 is required to cover a larger longitudinal grinding range, which greatly improves the grinding efficiency and reduces the operation time and labor costs.

[0032] In addition, compared with some solid structures or complex-shaped grinding tools, the hollow structure of the cylindrical grinding wheel 16 effectively reduces its own weight, making the entire grinding device lighter and more flexible during movement and operation, reducing the additional consumption of equipment power, and reducing the support load of the driving end of the power motor 17. Due to the hollow structure of the cylindrical grinding wheel 16, its heat dissipation performance is also superior to other types of grinding wheels. During long-term, high-intensity grinding operations, the heat generated by friction can be quickly dissipated to avoid problems such as increased wear of the grinding wheel, reduced hardness, or even cracking due to overheating, thereby significantly extending the service life of the cylindrical grinding wheel 16.

[0033] See also Figure 1 , Figure 2 as well as Figure 4 The linear drive assembly includes a longitudinal beam support 18, an electric push rod 19 and a linear slide rail 20. The longitudinal beam support 18 is arranged on one side of the hydraulic lifting platform 2; the electric push rod 19 is installed at the rear end of the upper end surface of the longitudinal beam support 18, and the rear end of the locking rod 25 is connected to the front end of the electric push rod 19; the linear slide rail 20 is arranged on the front side of the upper end surface of the longitudinal beam support 18 along the length direction, and the locking rod 25 is slidably arranged on the linear slide rail 20 along the length direction.

[0034] The linear drive assembly is mainly composed of three key components: the longitudinal beam support 18, the electric push rod 19 and the linear slide 20. The longitudinal beam support 18 is arranged on one side of the hydraulic lifting platform 2 and is the foundation of the entire linear drive assembly. The longitudinal beam support 18 is made of high-strength steel. After welding and processing technology, it is ensured that it has sufficient rigidity and stability, and can withstand the thrust generated by the electric push rod 19 when working and the various stresses of the locking rod 25 during the sliding process, so as to ensure that the assembly does not deform or displace under complex working conditions. The electric push rod 19 is installed at the rear end of the upper end surface of the longitudinal beam support 18 to provide power for linear motion. When receiving the operation signal, the electric push rod 19 starts, converts electrical energy into mechanical energy, and drives the locking rod 25 connected to the front end to perform linear motion. The linear slide 20 can ensure the smooth sliding of the locking rod 25. The linear slide 20 is made of high-quality steel with high surface hardness and low friction coefficient, which can provide stable support and guidance. Driven by the electric push rod 19, the locking rod 25 slides on the linear slide rail 20 along the length direction, and the hook-shaped locking portion at the front end of the locking rod 25 is used to ensure that the side beam and the grinding equipment will not be relatively displaced during the processing. See also Figure 1 and Figure 4 The hook-shaped locking portion includes a longitudinal rod 21, a transverse rod 22 and a compaction pad 23. The lower end of the longitudinal rod 21 is connected to the front end of the locking rod 25, the front end of the transverse rod 22 is connected to the upper end of the longitudinal rod 21, and the compaction pad 23 is arranged at the rear end of the transverse rod 22. The locking rod 25, the longitudinal rod 21 and the transverse rod 22 together constitute an avoidance recess 24 for avoiding the lower area of ​​the side beam to be polished.

[0035] First, the lower end of the longitudinal rod 21 is connected to the front end of the locking rod 25 and extends upward to provide support for subsequent components. The longitudinal rod 21, the cross bar 22 and the locking rod 25 are integrally formed and are usually made of high-strength and tough alloy steel to ensure that they will not deform easily when subjected to large tension and pressure, thereby ensuring the structural stability of the entire hook-shaped locking portion. The cross bar 22 and the longitudinal rod 21 together construct an approximately "hook"-shaped shape. The cross bar 22 expands the depth of the locking and can better adapt to the fixing requirements of side beams of different depths. Normally, the cross bar 22 and the longitudinal rod 21 are perpendicular to each other, but can also be set to a non-vertical angle structure according to the shape of the workpiece to be polished, which can not only firmly clamp the workpiece, but also not cause excessive extrusion damage to the workpiece. The locking rod 25, the longitudinal rod 21 and the cross bar 22 together constitute an avoidance recess 24 for avoiding the lower area of ​​the side beam to be polished. When faced with some side beams to be ground with special shapes, especially those with lower protrusions or irregular contours, the avoidance recess 24 can avoid the lower side of the side beam, so that the hook-shaped locking part can still accurately and firmly complete the locking task without affecting the normal grinding part of the workpiece, thereby ensuring smooth grinding work.

[0036] In addition, the compaction pad 23 is generally made of a material with good elasticity and friction properties such as soft rubber or polyurethane. When the hook-shaped locking part performs a locking operation on the workpiece, the compaction pad 23 first contacts the workpiece surface, and by virtue of its own elastic deformation, closely fits the contour of the workpiece, effectively filling the possible tiny gaps, which not only increases the friction force to prevent the workpiece from loosening and sliding during the grinding process, but also buffers the impact force generated by the clamping force, protecting the workpiece surface from scratches and damage.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A railway vehicle automatic grinding device, characterized in that: include: A mobile lifting mechanism, the mobile lifting mechanism comprising a mobile trolley (1) and a hydraulic lifting platform (2) arranged on the upper end surface of the mobile trolley (1); Two transverse movement modules, the two transverse movement modules are symmetrically arranged on the left and right sides of the upper end surface of the hydraulic lifting platform (2); Two grinding mechanisms, the two grinding mechanisms are mounted on the two transverse moving modules in a one-to-one correspondence, the grinding mechanisms include a grinding mounting seat, a power motor (17) and a grinding working part, the grinding mounting seat is arranged on the corresponding transverse moving module, the power motor (17) is arranged on the grinding mounting seat, the grinding working part is mounted on the driving end of the power motor (17), and the power motor (17) is used to drive the grinding working part to rotate; Two automatic locking mechanisms, the two automatic locking mechanisms are symmetrically arranged on the left and right sides of the hydraulic lifting platform (2), the automatic locking mechanism comprises a linear drive component and a locking rod (25), the rear end of the locking rod (25) is connected to the front end of the linear drive component, and the front end of the locking rod (25) is provided with a hook-shaped locking portion bent upward and backward; A control cabinet (26) having a built-in control system, a plurality of control buttons (27) electrically connected to the control system are arranged on the top of the control cabinet (26), the plurality of control buttons (27) are electrically connected to the transverse movement module, the grinding mechanism and the automatic locking mechanism respectively, an operation screen (28) electrically connected to the control system is arranged on the side wall of the control cabinet (26), the operation screen (28) is electrically connected to the transverse movement module, the grinding mechanism and the automatic locking mechanism respectively.

2. The automatic grinding equipment for railway vehicles according to claim 1, characterized in that: The bottom of the mobile trolley (1) is provided with a plurality of universal wheels (3), at least one of the universal wheels (3) is provided with a deflector (4), and the hydraulic lifting platform (2) is provided with a connecting chain (5), and the connecting chain (5) is connected to the deflector (4).

3. The automatic grinding equipment for railway vehicles according to claim 1, characterized in that: A crossbeam support (6) is provided on the rear side of the upper end surface of the hydraulic lifting platform (2), and the two ends of the crossbeam support (6) respectively extend to the outside of the hydraulic lifting platform (2), and the two transverse movement modules are respectively installed transversely at the two ends of the upper end surface of the crossbeam support (6).

4. The automatic grinding equipment for railway vehicles according to claim 3, characterized in that: The traverse module comprises: A transverse sliding rail (7), wherein the transverse sliding rail (7) is transversely mounted on one side of the upper end surface of the crossbeam support (6); A slide table (8), wherein the slide table (8) is slidably arranged on the transverse slide rail (7), and the grinding mounting seat is arranged on the slide table (8) on the same side; A transverse motor (9), wherein the transverse motor (9) is installed at an inner end of the transverse slide rail (7), and the transverse motor (9) is used to drive the slide table (8) to slide along the length direction and be set on the transverse slide rail (7).

5. The automatic grinding equipment for railway vehicles according to claim 4, characterized in that: The grinding mount includes: A connecting plate (10), the connecting plate (10) being longitudinally connected to the front side of the upper end face of the slide table (8); A mounting plate (11), the mounting plate (11) being arranged in parallel and spaced relation on the front side of the connecting plate (10), and the power motor (17) being mounted on the front side of the mounting plate (11); A plurality of guide rods (12), wherein the plurality of guide rods (12) are circumferentially arranged between the connecting plate (10) and the mounting plate (11), one end of the guide rod (12) is fixed to the connecting plate (10), and the other end of the guide rod (12) passes through the mounting plate (11) and is installed with a limiting portion. An elastic module is arranged between the connecting plate (10) and the mounting plate (11) and is located inside the plurality of guide rods (12).

6. The automatic grinding equipment for railway vehicles according to claim 5, characterized in that: The elastic module comprises a plurality of springs (13), the plurality of springs (13) are arranged circumferentially and are located between the connecting plate (10) and the mounting plate (11), a plurality of positioning posts (14) are provided on opposite sides of the connecting plate (10) and the mounting plate (11), and two ends of the spring (13) are respectively mounted on two opposite positioning posts (14).

7. The automatic grinding device for railway vehicles according to claim 5, characterized in that: A protective cover (15) is installed on the front side of the mounting plate (11), and the protective cover (15) is arranged around the upper part of the grinding working part, and the front end of the grinding working part protrudes from the protective cover (15).

8. The automatic grinding equipment for railway vehicles according to claim 1, characterized in that: The grinding working part comprises a cylindrical grinding wheel (16), the rear end of the cylindrical grinding wheel (16) is provided with a connection hole connected to the driving end of the power motor (17), and the front end of the cylindrical grinding wheel (16) forms an annular grinding port.

9. The automatic grinding device for railway vehicles according to claim 3, characterized in that: The linear drive assembly comprises: A longitudinal beam support (18), wherein the longitudinal beam support (18) is arranged on one side of the hydraulic lifting platform (2); An electric push rod (19), the electric push rod (19) being mounted on the rear end of the upper end surface of the longitudinal beam support (18), and the rear end of the locking rod (25) being connected to the front end of the electric push rod (19); A linear slide rail (20) is arranged on the front side of the upper end face of the longitudinal beam support (18) along the length direction, and the locking rod (25) is slidably arranged on the linear slide rail (20) along the length direction.

10. The automatic grinding device for railway vehicles according to claim 9, characterized in that: The hook-shaped locking portion comprises a longitudinal rod (21), a transverse rod (22) and a compaction pad (23); the lower end of the longitudinal rod (21) is connected to the front end of the locking rod (25); the front end of the transverse rod (22) is connected to the upper end of the longitudinal rod (21); the compaction pad (23) is arranged at the rear end of the transverse rod (22); the locking rod (25), the longitudinal rod (21) and the transverse rod (22) together form an avoidance recess (24) for avoiding the lower area of ​​the side beam to be polished.

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