Rail grinding unit and rail grinding trolley

Abstract

The application discloses a rail polishing unit and a rail polishing trolley, and the rail polishing unit comprises a suspension assembly, a unit frame assembly, a motor mounting platform, a motor guide assembly, a polishing motor, a polishing grinding wheel, a lifting driving mechanism and a deflection driving mechanism. The suspension assembly is connected with a trolley frame, and the unit frame assembly is slidably connected with the suspension assembly. The motor mounting platform is hinged with the lower part of the unit frame assembly, and the motor guide assembly is connected with the motor mounting platform. The polishing motor is slidably connected with the motor guide assembly, and the polishing grinding wheel is connected with the output shaft of the polishing motor. The two ends of the lifting driving mechanism are respectively hinged with the polishing motor and the motor mounting platform. The two ends of the deflection driving mechanism are respectively hinged with the trolley frame and the motor mounting platform. The application can solve the technical problems of the existing rail polishing unit, such as large space occupation, large lifting resistance, low polishing efficiency and poor maintainability.

Description

Technical Field

[0001] This application relates to the field of railway engineering machinery technology, and in particular to a high-efficiency grinding unit and a rail grinding trolley for use in rail grinding operations. Background Technology

[0002] The grinding device is the actuator for rail grinding operations and a key component of the rail grinding train, playing a vital role. The rail grinding device consists of multiple grinding units, and the quality, efficiency, and angle coverage of the rail grinding operation are all determined by these units. The grinding wheels on each unit directly act on the rail to perform the grinding operation; therefore, the rationality of the grinding unit's design, the precision of its movements, and the number of grinding units are extremely important. However, existing rail grinding units still have the following technical shortcomings:

[0003] (1) The grinding unit has a loose spatial structure and occupies a large space, resulting in fewer grinding heads within a limited length of the machine and lower grinding efficiency.

[0004] (2) The grinding motor has high lifting resistance, the lifting action is not smooth, and the grinding head landing point accuracy is low.

[0005] (3) The complex frame structure of the grinding device leads to poor maintainability in the later stage.

[0006] The following documents are relevant to this application in the prior art:

[0007] Document 1 is a Chinese invention application filed on August 12, 2022, and published on September 23, 2022, by Jinying Heavy Engineering Machinery Co., Ltd. and China State Railway Group Co., Ltd., with publication number CN115094693A. This invention discloses a rail grinding device, comprising a lateral movement mechanism, a deflection mechanism, a lifting mechanism, and a grinding mechanism. The grinding mechanism includes a grinding wheel, the circumferential surface of which can contact the rail head and move longitudinally along the rail as the rail grinding vehicle travels, thereby grinding the surface of the rail head. The lifting mechanism drives the grinding mechanism to rise and fall; the lateral movement mechanism drives the lifting mechanism to rotate, thereby causing the grinding wheel to shift laterally relative to the rail; the deflection mechanism drives the grinding mechanism to rotate, thereby causing the grinding wheel to change angle laterally relative to the rail. However, this device uses the circumferential surface of the grinding wheel for grinding, and as the grinding distance increases, wear marks will appear on the circumferential surface of the grinding wheel, affecting the grinding quality. Furthermore, the grinding device uses belt drive, and the inside of the grinding device is hot. Under high temperature conditions, the belt is prone to aging and failure.

[0008] Document 2 is a Chinese utility model patent applied for by China Railway Construction High-Tech Equipment Co., Ltd. on September 6, 2023, and published on September 23, 2024, with publication number CN220724735U. This utility model discloses a rail grinding device, including a mounting frame, at least two grinding units, and a locking mechanism. The locking mechanism is connected between adjacent grinding units for relative lateral movement between adjacent grinding units. Each grinding unit includes a support frame movably connected vertically to the mounting frame; a lateral movement mechanism movably connected laterally to the support frame; a grinding mechanism rotatably mounted on the lateral movement mechanism and positioned below the support frame; and a positioning mechanism for moving the grinding mechanism to the grinding position on the rail, mounted on the lateral movement mechanism and positioned near the side of the grinding mechanism. This utility model can safely pass through the harmful spaces of turnouts and ensures that the rail grinding device is always in close contact with the turnout rails during grinding, avoiding situations where operation is restricted and there are blind spots in grinding, thereby improving the grinding accuracy and quality of turnout rails. However, its grinding wheel installation direction has no angle with the rail length direction, and the direction of grinding sparks cannot be controlled, making the positioning mechanism behind the grinding wheel prone to burn-out. The center of the grinding wheel is connected to the rotating shaft, and replacing the grinding wheel requires the entire rotating shaft below the grinding device to be disassembled, making grinding wheel replacement inconvenient and maintenance difficult.

[0009] Document 3 is a Chinese utility model patent applied for by Beijing Jiaotong University on February 8, 2023, and published on October 3, 2023, with publication number CN219793486U. This utility model discloses a compact belt-type rail grinding unit and grinding device, including: a mounting frame mounted on the grinding unit; a vertical motion mechanism mounted on the mounting frame; a belt wheel mechanism mounted on the vertical motion mechanism and driven by the vertical motion mechanism to perform vertical movement; a tensioning mechanism mounted on the mounting frame and connected to the belt wheel mechanism, capable of tensioning the belt of the belt wheel mechanism; and a deflection motion mechanism mounted on the mounting frame and connected to the grinding device, capable of driving the mounting frame to deflect. This design maximizes the compactness of the grinding unit, saving space; the stress on the contact belt wheel is evenly distributed to the two hollow cylindrical guide rails through the contact wheel mounting plate, and the grinding unit has a compact structure and strong stability. However, this grinding device is an accessory for small grinders, with a low-powered grinding motor, simple structure and function, and low grinding capacity per cycle. Furthermore, it has a low degree of automation; the horizontal movement, deflection, and downward pressure of the grinding motor all require manual operation. The sanding belt has a short lifespan and needs frequent replacement. Utility Model Content

[0010] In view of this, the purpose of this application is to provide a rail grinding unit and a rail grinding trolley to solve the technical problems of existing rail grinding units, such as large space occupation, large lifting resistance, low grinding efficiency, and poor maintainability.

[0011] To achieve the aforementioned utility model objectives, this application specifically provides a technical solution for a rail grinding device, comprising: a suspension assembly, a unit frame assembly, a motor mounting platform, a motor guide assembly, a grinding motor, a grinding wheel, a lifting drive mechanism, and a deflection drive mechanism. The suspension assembly is connected to the vehicle frame, and the unit frame assembly is slidably connected to the suspension assembly. The motor mounting platform is hinged to the lower part of the unit frame assembly, and the motor guide assembly is connected to the motor mounting platform. The grinding motor is slidably connected to the motor guide assembly, and the grinding wheel is connected to the output shaft of the grinding motor. Both ends of the lifting drive mechanism are hinged to the grinding motor and the motor mounting platform, respectively. Both ends of the deflection drive mechanism are hinged to the vehicle frame and the motor mounting platform, respectively.

[0012] Furthermore, the suspension assembly includes unit suspension plates and lateral guide pillars. The unit suspension plates are mounted on the vehicle frame, and the two lateral guide pillars are mounted parallel to each other between the two unit suspension plates.

[0013] Furthermore, the motor mounting platform includes a grinding motor mounting bracket and a vertical guide column base plate, wherein the vertical guide column base plate is mounted on the grinding motor mounting bracket.

[0014] Furthermore, the unit frame assembly includes a grinding unit frame and a rotating shaft. The grinding unit frame is mounted on a transverse guide post and can slide laterally along the transverse guide post. The rotating shaft is mounted on the lower part of the grinding unit frame and connects the grinding unit frame and the grinding motor mounting bracket. The grinding motor mounting bracket can rotate relative to the grinding unit frame around the rotating shaft.

[0015] Furthermore, a grinding wheel connecting flange is installed on the shaft end of the grinding motor, and the grinding wheel is installed on the grinding wheel connecting flange.

[0016] Furthermore, the motor guide assembly includes a vertical guide post top plate, vertical guide posts, and a sliding back plate, the sliding back plate being fixed to the grinding motor. The vertical guide posts are mounted parallel to each other on the vertical guide post bottom plate, and the vertical guide post top plate is mounted above the vertical guide posts. The sliding back plate is movably fitted onto the vertical guide posts and can slide up and down along the vertical guide posts.

[0017] Furthermore, the rail grinding unit includes two grinding motors and four vertical guide columns mounted parallel to each other on the vertical guide column base plate. Each grinding motor is mounted on two vertical guide columns via a sliding back plate. One end of the lifting drive mechanism is mounted on the grinding motor via a lifting drive mounting seat, and the other end is mounted on the grinding motor mounting bracket via another lifting drive mounting seat. The lifting drive mechanism can drive the grinding motor to move up and down.

[0018] Furthermore, a grinding motor back plate is provided between the bottom plate and the top plate of the vertical guide column.

[0019] Furthermore, a fireproof and heat-insulating curtain is provided between the upper end of the back plate of the grinding motor and the vehicle frame.

[0020] Furthermore, one end of the deflection drive mechanism is mounted on the grinding motor mounting bracket via a deflection drive mounting seat, and the other end is mounted on the vehicle frame via another deflection drive mounting seat.

[0021] Furthermore, a reinforcing plate is connected between the top plate of the vertical guide column and the grinding motor mounting bracket.

[0022] Furthermore, the grinding motor mounting bracket is equipped with a grinding motor high-position locking component, which realizes the locking function when the grinding motor is in a high position.

[0023] Furthermore, the high-position locking assembly of the grinding motor includes a locking plate, a fixed slide, a high-position locking drive mechanism, and a locking drive mounting base. The fixed slide is disposed on the vertical guide column base plate, and the locking drive mounting base is disposed on the grinding motor mounting bracket. The locking plate is slidably connected to the fixed slide, and the high-position locking drive mechanism is disposed on the locking drive mounting base. The locking plate and the movable end of the high-position locking drive mechanism are connected by a locking pin. When the grinding motor is in a high position, the movable end of the high-position locking drive mechanism extends, driving the locking plate to slide below the back plate of the grinding motor, thereby achieving high-position locking.

[0024] Furthermore, the grinding motor mounting bracket is also equipped with a grinding motor deflection locking component, which achieves a locking function when the grinding motor mounting bracket is in the zero position.

[0025] Furthermore, the grinding motor deflection locking assembly includes a position detection limit switch, a deflection locking seat, and a deflection locking drive mechanism. The deflection locking seat is fixed to the grinding motor mounting bracket and can deflect with the grinding motor. The deflection locking drive mechanism is fixed to the grinding unit frame, and the position detection limit switch is mounted on the deflection locking seat. When the grinding motor is at 0 degrees deflection, the hole in the deflection locking seat is aligned with the deflection locking drive mechanism, and the movable end of the deflection locking drive mechanism extends into the hole, thereby achieving deflection locking. The position detection limit switch outputs a locking signal.

[0026] This application also provides a specific technical implementation scheme for a rail grinding trolley, including: the grinding unit as described above.

[0027] By implementing the technical solution of the rail grinding unit and rail grinding trolley provided in this application, the following beneficial effects are achieved:

[0028] (1) The rail grinding unit and rail grinding trolley of this application adopt a new grinding unit frame design, which is more compact and simple, occupies less space, and can arrange two grinding motors in the same grinding unit frame, thereby increasing the grinding head arrangement density, further improving grinding efficiency and grinding quality.

[0029] (2) The rail grinding unit and rail grinding trolley of this application adopt an integrated dual-axis sliding motor mounting back plate. The grinding motor can be lifted and lowered independently, which reduces the difficulty of parts processing, improves the accuracy of grinding head landing point, reduces grinding motor vibration, and further improves grinding quality.

[0030] (3) The rail grinding unit and rail grinding trolley of this application adopt a grinding unit frame with a large opening structure design, which can increase the maintenance space, improve the maintainability of the grinding unit, reduce the overall length of the vehicle under the condition of a fixed total number of grinding heads, improve the overall flexibility of the vehicle, reduce the requirements for the station yard and station, and can stop at more small stations or stations for resupply.

[0031] (4) The rail grinding unit and rail grinding trolley of this application have the functions of pressing down, deflecting and lateral movement, which can grind the main line of the rail, effectively improving the efficiency and quality of rail grinding. At the same time, it has the functions of high-position locking and deflection locking of the grinding motor, which can greatly improve the safety and stability of grinding. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a partial structural schematic diagram of a specific embodiment of the rail grinding unit of this application;

[0034] Figure 2 This is a schematic diagram of a specific embodiment of the rail grinding unit of this application;

[0035] Figure 3 This is a schematic diagram of the structure of a specific embodiment of the rail grinding unit of this application from another perspective;

[0036] Figure 4 This is a schematic diagram of a specific embodiment of the rail grinding unit of this application;

[0037] Figure 5 This is a schematic front view of a specific embodiment of the rail grinding unit of this application;

[0038] Figure 6 This is a schematic side view of a specific embodiment of the rail grinding unit of this application;

[0039] Figure 7 This is a schematic rear view of the structure of a specific embodiment of the rail grinding unit of this application;

[0040] Figure 8 This is a schematic top view of a specific embodiment of the rail grinding unit of this application;

[0041] Figure 9 This is a schematic diagram of the high-position locking device in a specific embodiment of the rail grinding unit of this application;

[0042] Figure 10 This is a schematic diagram of the deflection locking device in a specific embodiment of the rail grinding unit of this application;

[0043] Figure 11 This is a three-dimensional structural diagram of the frame of a rail grinding trolley in a specific embodiment of this application;

[0044] Figure 12 This is a three-dimensional structural diagram of the frame (excluding independent wheels) of a specific embodiment of the rail grinding trolley in this application;

[0045] Figure 13 This is a schematic top view of the frame structure in a specific embodiment of the rail grinding trolley of this application;

[0046] Figure 14 This is a schematic side view of the frame structure in a specific embodiment of the rail grinding trolley of this application;

[0047] Figure 15 This is a schematic front view of the frame structure in a specific embodiment of the rail grinding trolley of this application;

[0048] Figure 16 This is a schematic diagram of the frame installation structure of a rail grinding trolley in a specific embodiment of this application;

[0049] Figure 17 This is a three-dimensional structural schematic diagram of a specific embodiment of the rail grinding trolley of this application;

[0050] Figure 18 This is a side view of the internal structure of a specific embodiment of the rail grinding trolley of this application;

[0051] Figure 19 This is a top view of the internal structure of a specific embodiment of the rail grinding trolley of this application;

[0052] Figure 20 This is a schematic top view of a specific embodiment of the rail grinding trolley of this application;

[0053] Figure 21 This is a perspective view of the internal structure of a specific embodiment of the rail grinding trolley of this application;

[0054] Figure 22 This is a schematic side view of a specific embodiment of the rail grinding trolley of this application;

[0055] Figure 23 This is a front view of the internal structure of a specific embodiment of the rail grinding trolley of this application;

[0056] Figure 24 This is a schematic front view of a specific embodiment of the rail grinding trolley of this application;

[0057] Figure 25 This is a schematic diagram of the principle of the heat insulation structure in a specific embodiment of the rail grinding trolley of this application;

[0058] Figure 26 This is a schematic diagram of the thermal insulation structure in a specific embodiment of the rail grinding trolley of this application;

[0059] In the diagram: 1-Frame, 2-Rail grinding unit, 3-Fireproof and dustproof device, 4-Independent wheel, 101-Frame longitudinal beam, 102-Frame transverse beam, 103-Frame vertical beam, 104-Frame base plate, 105-Main beam longitudinal beam, 106-Main beam vertical beam, 107-Traction nose cover, 108-Traction nose seat, 109-Main beam base plate, 110-End beam, 111-Inner reinforcing plate, 112-Wheel mounting plate, 113-Outer reinforcing plate Plate, 114-End beam stiffener, 115-Unit mounting base, 116-First boss, 117-First groove, 118-Second boss, 119-Second groove, 201-Unit suspension plate, 202-Transverse guide post, 203-Grinding unit frame, 204-Grinding motor, 205-Grinding motor mounting bracket, 206-Rotating shaft, 207-Lifting drive mechanism, 208-Lifting drive mounting base, 209-Reinforcing plate 210-Grinding motor high-position locking assembly, 211-Deflection drive mechanism, 212-Deflection drive mounting base, 213-Grinding motor deflection locking assembly, 214-Vertical guide column top plate, 215-Vertical guide column, 216-Sliding back plate, 217-Vertical guide column bottom plate, 218-Connecting flange, 219-Grinding wheel, 220-Fireproof and heat-insulating curtain, 221-Grinding motor back plate, 222-Locking plate, 223- Fixed slide, 224-slide groove, 225-high position locking drive mechanism, 226-locking drive mounting base, 227-locking pin, 228-position detection limit switch, 229-deflection locking seat, 230-deflection locking drive mechanism, 231-upper pressure bar, 232-lower pressure bar, 233-hole, 234-lateral locking linkage, 303-dust collection vent, 304-middle dust collection vent, 100-rail grinding trolley. Detailed Implementation

[0060] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0061] As attached Figure 1 To be continued Figure 26 The accompanying drawings illustrate specific embodiments of the rail grinding unit and rail grinding trolley of this application. The following description, in conjunction with the accompanying drawings and specific embodiments, further illustrates this application.

[0062] Example 1

[0063] As attached Figure 1 To be continued Figure 8 As shown, an embodiment of the rail grinding unit of this application specifically includes: a suspension assembly, a unit frame assembly, a motor mounting platform, a motor guide assembly, a grinding motor 204, a grinding wheel 219, a lifting drive mechanism 207, and a deflection drive mechanism 211. The suspension assembly is connected to the frame 1, and the unit frame assembly is slidably connected to the suspension assembly. The motor mounting platform is hinged to the lower part of the unit frame assembly, and the motor guide assembly is connected to the motor mounting platform. The grinding motor 204 is slidably connected to the motor guide assembly, and the grinding wheel 219 is connected to the output shaft of the grinding motor 204. The two ends of the lifting drive mechanism 207 are respectively hinged to the grinding motor 204 and the motor mounting platform. The two ends of the deflection drive mechanism 211 are respectively hinged to the frame 1 and the motor mounting platform. As a typical embodiment of this application, the lifting drive mechanism 207 can specifically be a lifting cylinder, and the deflection drive mechanism 211 can specifically be a deflection cylinder.

[0064] The suspension assembly further includes unit suspension plates 201 and lateral guide pillars 202. The unit suspension plates 201 are mounted on the frame 1, and the two lateral guide pillars 202 are mounted parallel to each other between the two unit suspension plates 201, with their ends fixed by bolts. The suspension assembly is connected to the unit frame by bolts and mating grooves.

[0065] The motor mounting platform further includes a grinding motor mounting bracket 205 and a vertical guide column base plate 217, with the vertical guide column base plate 217 mounted on the grinding motor mounting bracket 205.

[0066] The unit frame assembly further includes a grinding unit frame 203 and a rotating shaft 206. The grinding unit frame 203 is mounted on the transverse guide post 202 and can slide laterally along the transverse guide post 202. The rotating shaft 206 is mounted on the lower part of the grinding unit frame 203 and connects the grinding unit frame 203 and the grinding motor mounting bracket 205. The grinding motor mounting bracket 205 can rotate relative to the grinding unit frame 203 around the rotating shaft 206. A transverse locking link 234 is provided between the unit suspension plate 201 and the grinding unit frame 203 to lock the transverse position of the rail grinding unit 2.

[0067] The grinding motor 204 has a grinding wheel connecting flange 218 installed on its shaft end, and the grinding wheel 219 is installed on the grinding wheel connecting flange 218.

[0068] The motor guide assembly includes a vertical guide post top plate 214, vertical guide posts 215, and a sliding back plate 216, with the sliding back plate 216 fixed to the grinding motor 204. The vertical guide posts 215 are mounted parallel to each other on the vertical guide post bottom plate 217, and the vertical guide post top plate 214 is mounted above the vertical guide posts 215. The sliding back plate 216 is movably fitted onto the vertical guide posts 215 and can slide up and down along the vertical guide posts 215.

[0069] The rail grinding device 100 includes two grinding motors 204 and four vertical guide columns 215 mounted in pairs parallel to each other on the vertical guide column base plate 217. Each grinding motor 204 is mounted on two vertical guide columns 215 via a sliding back plate 216. One end of the lifting drive mechanism 207 is mounted on the grinding motor 204 via a lifting drive mounting base 208, and the other end is mounted on the grinding motor mounting bracket 205 via another lifting drive mounting base 208. The lifting drive mechanism 207 can drive the grinding motor 204 to move up and down.

[0070] One end of the deflection drive mechanism 211 is mounted on the grinding motor mounting bracket 205 via a deflection drive mounting base 212, and the other end is mounted on the frame 1 via another deflection drive mounting base 212. A reinforcing plate 209 is also connected between the vertical guide column top plate 214 and the grinding motor mounting bracket 205.

[0071] As attached Figure 9As shown, a high-position locking assembly 210 for the grinding motor is installed on the grinding motor mounting bracket 205, which locks the grinding motor 204 when it is in a high position. The high-position locking assembly 210 includes a locking plate 222, a fixed slide 223, a high-position locking drive mechanism 225, and a locking drive mounting base 226. The fixed slide 223 is mounted on the vertical guide column base plate 217, and the locking drive mounting base 226 is mounted on the grinding motor mounting bracket 205. The locking plate 222 is slidably connected to the fixed slide 223, and the high-position locking drive mechanism 225 is mounted on the locking drive mounting base 226. The locking plate 222 and the movable end of the high-position locking drive mechanism 225 are connected by a locking pin 227. When the grinding motor 204 is in a high position, the movable end of the high-position locking drive mechanism 225 extends, causing the locking plate 222 to slide below the back plate 221 of the grinding motor, thereby achieving high-position locking. As a typical embodiment of this application, the high-position locking drive mechanism 225 can specifically adopt a high-position locking cylinder.

[0072] As attached Figure 10 As shown, a grinding motor deflection locking assembly 213 is also installed on the grinding motor mounting bracket 205, which achieves a locking function when the grinding motor mounting bracket 205 is in the zero position. The grinding motor deflection locking assembly 213 includes a position detection limit switch 228, a deflection locking seat 229, and a deflection locking drive mechanism 230. The deflection locking seat 229 is fixed on the grinding motor mounting bracket 205 and can deflect with the grinding motor 204. The deflection locking drive mechanism 230 is fixed on the grinding unit frame 203, and the position detection limit switch 228 is installed on the deflection locking seat 229. When the grinding motor 204 is at 0 degrees of deflection, the hole 233 in the deflection locking seat 229 is aligned with the deflection locking drive mechanism 230, and the movable end of the deflection locking drive mechanism 230 extends into the hole 233, thereby achieving deflection locking, and the position detection limit switch 228 outputs a locking signal. As a typical embodiment of this application, the deflection locking drive mechanism 230 may specifically adopt a deflection locking cylinder.

[0073] As attached Figure 11 To be continued Figure 16 As shown, the frame 1 specifically includes: a main beam assembly, a grinding device frame assembly, an end beam assembly, and a running gear assembly. The end beam assembly is located on the frame 1 along the working direction (i.e., longitudinally, as shown in the attached diagram). Figure 11 The direction indicated by L in the middle is shown in the attached diagram. Figure 11 The direction indicated by W is transverse, and the direction indicated by H is vertical. The main beam assembly is installed above the middle of the end beam assembly, and the grinding device frame assembly is installed on both sides of the end beam assembly along the transverse direction. The traveling assembly is installed below the end beam assembly and is symmetrically distributed along the transverse direction. The grinding device frame assembly and the end beam assembly are positioned together by the first boss 116 and the first groove 117.

[0074] The grinding device frame assembly further includes frame longitudinal beams 101, frame transverse beams 102, frame vertical beams 103, and a frame base plate 104. Two frame longitudinal beams 101 and two frame transverse beams 102 are vertically connected to form the frame body, and the four corners of the frame body are connected to the top of the frame vertical beams 103. The frame base plate 104 is installed at the bottom of the frame vertical beams 103, and a first boss 116 for positioning is provided on the frame base plate 104.

[0075] The grinding device frame assembly also includes unit mounting seats 115, which are located inside the frame longitudinal beams 101. The installation distance between the unit mounting seats 115 is adjusted according to the number and width of the rail grinding units 2. Simultaneously, the position of the unit mounting seats 115 can be adjusted according to the number of grinding heads and the form of the frame assembly, making the frame 1 of the rail grinding trolley 100 universal, and the number of grinding heads adjustable according to actual needs.

[0076] The end beam assembly further includes an end beam 110 and an end beam stiffener 114. The end beam 110 is provided with a first groove 117 that mates with the first boss 116, and the end beam stiffener 114 is located below the end beam 110.

[0077] The main beam assembly also includes a main beam vertical beam 106 and a main beam base plate 109. The main beam longitudinal beam 105 is connected to the main beam vertical beam 106 at both ends along the longitudinal direction. The main beam base plate 109 is located at the bottom of the main beam vertical beam 106, and a second boss 118 for positioning is provided at the bottom of the main beam base plate 109. A second groove 119 corresponding to and engaging with the second boss 118 is provided on the end beam 110.

[0078] The main beam assembly also includes a traction nose cover 107 and a traction nose seat 108, which are disposed on the front side of the main beam vertical beam 106, with the traction nose cover 107 disposed on the traction nose seat 108.

[0079] The running gear further includes a wheel mounting plate 112, an inner reinforcing plate 111, and an outer reinforcing plate 113. The inner reinforcing plate 111 and the outer reinforcing plate 113 are respectively disposed on both sides of the wheel mounting plate 112 in the transverse direction, and an independent wheel 4 is mounted on the wheel mounting plate 112.

[0080] The rail grinding unit 2 adopts an integrated dual-axis motor sliding backplate assembly. The grinding motor 204 can be independently raised and lowered. The integrated dual-axis sliding backplate reduces the difficulty of parts processing, improves the raising and lowering accuracy of the grinding motor 204, making it easier to ensure grinding precision, and also reduces motor vibration, further improving grinding quality. The grinding motor 204 is designed with high-position locking and deflection locking functions, which can significantly improve grinding safety and stability. The rail grinding unit 2 has downward pressing, deflection, and lateral movement functions, which can grind the main line of the rail, effectively improving the efficiency and quality of rail grinding.

[0081] Example 2

[0082] As attached Figure 18 To be continued Figure 24 As shown, an embodiment of the rail grinding trolley 100 of this application specifically includes:

[0083] Frame 1;

[0084] Fireproof and dustproof device 3 installed on the frame 1;

[0085] As described in Example 1, the rail grinding unit 2 is installed on the frame 1 and located inside the fireproof and dustproof device 3.

[0086] The fireproof and dustproof device 3 contains six grinding units 2, arranged symmetrically in pairs along the transverse direction. Each grinding unit 2 includes two grinding motors 204. A grinding wheel connecting flange 218 is mounted on the shaft end of the grinding motor 204, and grinding wheels 219 are mounted on the grinding wheel connecting flange 218. Existing rail grinding devices generally consist of 6, 8, or 10 grinding units, with each grinding unit integrating one grinding motor 204. The grinding motor 204 drives the grinding wheels 219 to directly act on the rail to achieve the grinding operation. The number of grinding wheels 219 directly determines the grinding efficiency of the grinding device. The rail grinding device 100 described in this embodiment integrates six rail grinding units 2 within the limited space of a single grinding trolley. Each rail grinding unit 2 integrates two grinding motors 204, for a total of 12 grinding motors 204, which can simultaneously mount 12 grinding wheels 219. The rail grinding car carries multiple grinding trolleys that work together simultaneously. Increasing the number of grinding heads per trolley allows for the placement of more grinding wheels while maintaining the same overall car length and number of trolleys; conversely, it allows for a reduction in the number of trolleys while keeping the total number of grinding wheels constant, thus reducing the overall car length and number of sections. Increasing the number of grinding heads effectively improves the grinding efficiency of the rail grinding car. Reducing the overall car length enhances its flexibility, lowers requirements for stations and yards, and allows for resupply stops at more smaller stations or yards.

[0087] As attached Figure 25 and appendix Figure 26As shown, the upper end of the grinding motor back plate 221 is mounted on the top plate 214 of the vertical guide column, and the lower end is mounted on the bottom plate 217 of the vertical guide column. One end of the fireproof and heat-insulating curtain 220 is mounted above the grinding motor back plate 221, and the other end is mounted on the longitudinal beam 101 of the frame on the inner side of the grinding device frame. The area separated from the grinding motor back plate 221, the fireproof and heat-insulating curtain 220 and the internal intermediate plate assembly is the high-temperature zone B, and the intermediate dust collection port 304 is located above the high-temperature zone. The area separated from the grinding motor back plate 221, the fireproof and heat-insulating curtain 220, the side panel assembly and the top plate assembly is the low-temperature zone A, and the dust collection port 303 is located above the low-temperature zone. The transverse guide column 202, the grinding motor 204, the lifting drive mechanism 207, the vertical guide column 215 and the deflection drive mechanism 211 are all located in the low-temperature zone. Rail grinding operations generate high temperatures inside the grinding device, which can affect its continuous operation. This embodiment addresses this by installing a fireproof and heat-insulating curtain 220 and a back plate 221 behind the grinding motor 204, effectively isolating high and low temperature zones within the grinding device. This prevents sparks from reaching the low-temperature zone, restricts the flow of hot air towards the motor, and slows the temperature rise in the low-temperature zone, thus improving the grinding device's continuous operation. Furthermore, dividing the grinding device into high-temperature and low-temperature zones ensures that critical components (such as the grinding motor and its drive mechanism, as well as internal bearings, coils, and seals) are located in the low-temperature zone, reducing the frequency of failures due to high temperatures. A specific embodiment also increases the number of air intakes to dissipate heat from the high-temperature and low-temperature zones separately, increasing the airflow rate inside the grinding device and reducing the overall internal temperature.

[0088] The rail grinding trolley 100 has lifting and traveling functions, while the rail grinding unit 2 has lateral movement, downward pressing, and deflection functions. These functional components interact with the entire vehicle via fasteners, cables, hydraulic lines, and pneumatic lines. The operation control software is compiled and stored in the vehicle's network control system. The rail grinding trolley 100 is installed under the vehicle. In non-operating mode, it is suspended from the vehicle body by locking pins. In operating mode, it moves synchronously with the vehicle via a traction column installed under the vehicle body. After stopping operation, the rail grinding trolley 100 can be lifted and locked using a lifting cylinder. When the rail grinding vehicle is operating on the rails, the rail grinding trolley 100 rests on the rails to perform rail grinding operations. The electrical and control systems of the grinding vehicle can control the power supply and operation of the rail grinding trolley 100.

[0089] It should be noted that, in the specific embodiments of this application, the hydraulic cylinder can be replaced by an electric cylinder or a pneumatic cylinder, and the pneumatic cylinder can also be replaced by a hydraulic cylinder or an electric cylinder.

[0090] In the description of this application, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly set on the other element or indirectly set on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0091] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 of describing this application and simplifying the description, and do not indicate or imply that the device or element 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 application.

[0092] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0093] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this application can produce, should still fall within the scope of the technical content disclosed in this application.

[0094] By implementing the technical solutions of the rail grinding unit and rail grinding trolley described in the specific embodiments of this application, the following technical effects can be achieved:

[0095] (1) The rail grinding unit and rail grinding trolley described in the specific embodiments of this application adopt a new grinding unit frame design, which is more compact and simple, occupies less space, and can arrange two grinding motors in the same grinding unit frame, thereby increasing the grinding head arrangement density, further improving grinding efficiency and grinding quality.

[0096] (2) The rail grinding unit and rail grinding trolley described in the specific embodiments of this application adopt an integrated dual-axis sliding motor mounting back plate. The grinding motor can be lifted and lowered independently, which reduces the difficulty of parts processing, improves the accuracy of grinding head landing point, reduces grinding motor vibration, and further improves grinding quality.

[0097] (3) The rail grinding unit and rail grinding trolley described in the specific embodiments of this application adopt a grinding unit frame with a large opening structure design, which can increase the maintenance space, improve the maintainability of the grinding unit, reduce the overall length of the vehicle under the condition of a fixed total number of grinding heads, improve the overall flexibility of the vehicle, reduce the requirements for the station and yard, and can stop at more small stations or yards for resupply.

[0098] (4) The rail grinding unit and rail grinding trolley described in the specific embodiments of this application have pressing, deflection and lateral movement functions, which can grind the main line of the rail, effectively improving the grinding efficiency and grinding quality. At the same time, the grinding motor has high-position locking and deflection locking functions, which can greatly improve the grinding safety and stability.

[0099] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0100] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Although this application has been disclosed above with reference to preferred embodiments, it is not intended to limit this application. Any person skilled in the art can make many possible variations and modifications to the technical solutions of this application using the methods and techniques disclosed above, or modify them into equivalent embodiments with equivalent changes, without departing from the spirit and technical essence of this application. Therefore, any simple modifications, equivalent substitutions, equivalent changes, and modifications made to the above embodiments based on the technical essence of this application without departing from the content of the technical solutions of this application shall still fall within the protection scope of the technical solutions of this application.

Claims

1. A rail grinding unit, characterized in that, include: The vehicle comprises a suspension assembly, a unit frame assembly, a motor mounting platform, a motor guide assembly, a grinding motor (204), a grinding wheel (219), a lifting drive mechanism (207), and a deflection drive mechanism (211). The suspension assembly is connected to the vehicle frame (1), and the unit frame assembly is slidably connected to the suspension assembly. The motor mounting platform is hinged to the lower part of the unit frame assembly, and the motor guide assembly is connected to the motor mounting platform. The grinding motor (204) is slidably connected to the motor guide assembly, and the grinding wheel (219) is connected to the output shaft of the grinding motor (204). The two ends of the lifting drive mechanism (207) are respectively hinged to the grinding motor (204) and the motor mounting platform. The two ends of the deflection drive mechanism (211) are respectively hinged to the vehicle frame (1) and the motor mounting platform.

2. The rail grinding unit according to claim 1, characterized in that: The suspension assembly includes a unit suspension plate (201) and two transverse guides (202). The unit suspension plate (201) is mounted on the frame (1), and the two transverse guides (202) are mounted parallel to each other between the two unit suspension plates (201).

3. The rail grinding unit according to claim 2, characterized in that: The motor mounting platform includes a grinding motor mounting bracket (205) and a vertical guide column base plate (217), the vertical guide column base plate (217) being mounted on the grinding motor mounting bracket (205).

4. The rail grinding unit according to claim 3, characterized in that: The unit frame assembly includes a grinding unit frame (203) and a rotating shaft (206). The grinding unit frame (203) is mounted on a transverse guide post (202) and can slide laterally along the transverse guide post (202). The rotating shaft (206) is mounted on the lower part of the grinding unit frame (203) and connects the grinding unit frame (203) and the grinding motor mounting bracket (205). The grinding motor mounting bracket (205) can rotate relative to the grinding unit frame (203) around the rotating shaft (206).

5. The rail grinding unit according to claim 4, characterized in that: The grinding motor (204) has a grinding wheel connecting flange (218) installed on its shaft end, and the grinding wheel (219) is installed on the grinding wheel connecting flange (218).

6. The rail grinding unit according to claim 4 or 5, characterized in that: The motor guide assembly includes a vertical guide post top plate (214), a vertical guide post (215), and a sliding back plate (216). The sliding back plate (216) is fixed on the grinding motor (204). The vertical guide posts (215) are installed parallel to each other on the vertical guide post bottom plate (217). The vertical guide post top plate (214) is installed above the vertical guide post (215). The sliding back plate (216) is movably sleeved on the vertical guide post (215) and can slide up and down along the vertical guide post (215).

7. The rail grinding unit according to claim 6, characterized in that: It includes two grinding motors (204), and four vertical guide columns (215) are installed in pairs parallel to each other on the vertical guide column base plate (217). Each grinding motor (204) is installed on two vertical guide columns (215) through a sliding back plate (216). One end of the lifting drive mechanism (207) is installed on the grinding motor (204) through a lifting drive mounting seat (208), and the other end is installed on the grinding motor mounting bracket (205) through another lifting drive mounting seat (208). The lifting drive mechanism (207) can drive the grinding motor (204) to move up and down.

8. The rail grinding unit according to claim 7, characterized in that: A grinding motor backplate (221) is provided between the bottom plate (217) and the top plate (214) of the vertical guide column.

9. The rail grinding unit according to claim 8, characterized in that: A fireproof and heat-insulating curtain (220) is provided between the upper end of the back plate (221) of the grinding motor and the frame (1).

10. The rail grinding unit according to claim 7, 8 or 9, characterized in that: One end of the deflection drive mechanism (211) is mounted on the grinding motor mounting bracket (205) via a deflection drive mounting base (212), and the other end is mounted on the frame (1) via another deflection drive mounting base (212).

11. The rail grinding unit according to claim 10, characterized in that: A reinforcing plate (209) is connected between the top plate (214) of the vertical guide column and the grinding motor mounting bracket (205).

12. The rail grinding unit according to claim 4, 5, 7, 8, 9 or 11, characterized in that: The grinding motor mounting bracket (205) is equipped with a grinding motor high-position locking component (210), which realizes the locking function when the grinding motor (204) is in a high position.

13. The rail grinding unit according to claim 12, characterized in that: The high-position locking assembly (210) of the grinding motor includes a locking plate (222), a fixed slide (223), a high-position locking drive mechanism (225), and a locking drive mounting base (226). The fixed slide (223) is disposed on the vertical guide column base plate (217), and the locking drive mounting base (226) is disposed on the grinding motor mounting bracket (205). The locking plate (222) is slidably connected to the fixed slide (223), and the high-position locking drive mechanism (225) is disposed on the locking drive mounting base (226). The movable end of the locking plate (222) and the high-position locking drive mechanism (225) are connected by a locking pin (227). When the grinding motor (204) is in a high position, the movable end of the high-position locking drive mechanism (225) extends out, driving the locking plate (222) to slide below the back plate (221) of the grinding motor, thereby realizing high-position locking.

14. The rail grinding unit according to claim 4, 5, 7, 8, 9, 11 or 13, characterized in that: The grinding motor mounting bracket (205) is also equipped with a grinding motor deflection locking component (213), which locks the motor when it is in the zero position.

15. The rail grinding unit according to claim 14, characterized in that: The grinding motor deflection locking assembly (213) includes a position detection limit switch (228), a deflection locking seat (229), and a deflection locking drive mechanism (230). The deflection locking seat (229) is fixed on the grinding motor mounting bracket (205) and can deflect with the grinding motor (204). The deflection locking drive mechanism (230) is fixed on the grinding unit frame (203), and the position detection limit switch (228) is installed on the deflection locking seat (229). When the grinding motor (204) is at 0 degrees of deflection, the hole (233) opened on the deflection locking seat (229) is aligned with the deflection locking drive mechanism (230), and the movable end of the deflection locking drive mechanism (230) extends into the hole (233), thereby realizing deflection locking. The position detection limit switch (228) outputs a locking position signal.

16. A rail grinding trolley, characterized in that, include: The polishing unit (2) as described in any one of claims 1 to 15.

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