Steel rail grinding unit and steel rail grinding trolley

Abstract

The invention discloses a steel rail grinding unit and a steel rail grinding trolley. The steel rail grinding unit comprises a suspension assembly, a unit frame assembly, a motor mounting platform, a motor guide assembly, a grinding motor, a grinding wheel, a lifting driving mechanism and a deflection driving mechanism. The suspension assembly is connected with the frame, and the unit frame assembly is slidably connected with the suspension assembly. The motor installation platform is hinged to the lower portion of the unit frame assembly, and the motor guide assembly is connected with the motor installation platform. The grinding motor is slidably connected with the motor guide assembly, and the grinding wheel is connected with an output shaft of the grinding motor. The two ends of the lifting driving mechanism are hinged to the grinding motor and the motor mounting platform correspondingly. And two ends of the deflection driving mechanism are respectively hinged with the frame and the motor mounting platform. The steel rail grinding unit can solve the technical problems that an existing steel rail grinding unit is large in occupied space and lifting resistance, low in grinding efficiency and poor in maintainability.

Description

Technical Field

[0001] This application relates to the technical field of railway engineering machinery, and particularly to an efficient grinding unit for rail grinding operations and a rail grinding trolley. Background Art

[0002] The grinding device is the actuator for rail grinding operations and a key component of the rail grinding train, playing an important role on the grinding train. The rail grinding device consists of multiple grinding units, and the quality, efficiency, angle coverage range, etc. of the rail grinding operation are all reflected by the grinding units. The grinding wheels on the grinding units directly act on the rails to achieve the grinding operation, and the rationality of the design of the grinding unit mechanism, the accuracy of the movement, and the number of grinding units are very important. However, the existing rail grinding units still have the following technical defects:

[0003] (1) The spatial structure of the grinding unit is loose, occupying a large space, resulting in fewer grinding heads arranged within the limited vehicle length range and a low grinding efficiency;

[0004] (2) The lifting resistance of the grinding motor is large, the lifting action is not smooth, and the accuracy of the grinding head landing point is low;

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

[0006] In the prior art, the following documents are mainly related to this application:

[0007] Document 1 is a Chinese invention application filed by Golden Eagle Heavy Engineering Machinery Co., Ltd. and China National Railway Group Co., Ltd. on August 12, 2022, and announced on September 23, 2022, with the announcement number CN115094693A. This invention discloses a rail grinding device, which includes a transverse movement mechanism, a deflection mechanism, a lifting mechanism, and a grinding mechanism; the grinding mechanism includes a grinding wheel, and the circumferential surface of the grinding wheel can contact the rail head and move longitudinally along the rail along the running direction of the rail grinding vehicle, so as to grind the surface of the rail head; the lifting mechanism is used to drive the grinding mechanism to lift; the transverse movement mechanism is used to drive the lifting mechanism to rotate, so that the grinding wheel generates a transverse displacement relative to the rail; the deflection mechanism is used to drive the grinding mechanism to rotate, so that the grinding wheel generates an angular change relative to the rail. However, this device uses the circumferential surface of the grinding wheel for grinding. As the grinding distance becomes longer, wear indentations will occur on the circumferential surface of the grinding wheel, affecting the grinding quality. And this grinding device uses belt drive, there is high temperature inside the grinding device, and the belt is prone to aging and failure in a high-temperature environment.

[0008] Document 2 is a Chinese utility model patent applied by China Railway Construction Heavy Equipment Co., Ltd. on September 6, 2023, and publicly disclosed on September 23, 2024, with the publication number CN220724735U. This utility model discloses a rail grinding device, which includes a mounting frame, at least two grinding units, and a locking mechanism. The locking mechanism is connected between adjacent grinding units and is used for the relative movement of adjacent grinding units in the transverse direction. The grinding unit includes a support frame that is vertically movably connected to the mounting frame; a transverse movement mechanism that is transversely movably connected to the support frame; a grinding mechanism that is rotatably arranged on the transverse movement mechanism and is arranged below the support frame; and a positioning mechanism that is used to move the grinding mechanism to the grinding position of the rail. The positioning mechanism is arranged on the transverse movement mechanism and is arranged on the side close to the grinding mechanism. This utility model can safely pass through the harmful space of the turnout and ensure that the rail grinding device always closely adheres to the turnout rail for grinding, avoiding the situation of operation limitation and grinding blind spots, thereby improving the grinding accuracy and quality of the turnout rail. However, the installation direction of its grinding wheel has no angle with the length direction of the rail, and the splashing direction of the grinding sparks cannot be controlled, resulting in easy burnout of the positioning mechanism behind the grinding wheel. The center of the grinding wheel is connected to the rotating shaft, and replacing the grinding wheel requires the overall disassembly of the rotating shaft below the grinding device, resulting in inconvenient grinding wheel replacement and difficult maintenance.

[0009] Document 3 is a Chinese utility model patent applied by Beijing Jiaotong University on February 8, 2023, and publicly disclosed on October 3, 2023, with the publication number CN219793486U. This utility model discloses a compact belt-type rail grinding unit and grinding device, including: a mounting frame installed on the grinding unit; a vertical movement mechanism installed on the mounting frame; a sanding wheel mechanism installed on the vertical movement mechanism and driven by the vertical movement mechanism to perform vertical movement; a tensioning mechanism installed on the mounting frame and connected to the sanding wheel mechanism, capable of tensioning the sanding belt of the sanding wheel mechanism; and a deflection movement mechanism installed on the mounting frame and connected to the grinding device, capable of driving the installed frame to deflect. The compactness of the grinding unit is maximally achieved, saving space; the stress on the contact sanding wheel is evenly distributed to 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 a supporting device for a small grinding machine, with a small power of the grinding motor, simple structural functions, and a low single grinding amount. Moreover, the degree of automation is low, and the transverse movement, deflection, and downward pressure of the grinding motor all need to be manually operated. The service life of the sanding belt is short and needs to be frequently replaced. Summary of the Invention

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

[0011] To achieve the above-mentioned invention object, the present application specifically provides a technical implementation solution for a rail grinding device, including: a suspension assembly, a unit frame assembly, a motor mounting platform, a motor guiding 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 guiding assembly is connected to the motor mounting platform. The grinding motor is slidably connected to the motor guiding assembly, and the grinding wheel is connected to the output shaft of the grinding motor. Both ends of the lifting drive mechanism are respectively hinged to the grinding motor and the motor mounting platform. Both ends of the deflection drive mechanism are respectively hinged to the vehicle frame and the motor mounting platform.

[0012] Further, the suspension assembly includes a unit suspension plate and a transverse guide post. The unit suspension plate is mounted on the vehicle frame, and two transverse guide posts are mounted parallel to each other between the two unit suspension plates.

[0013] Further, the motor mounting platform includes a grinding motor mounting frame and a vertical guide post bottom plate. The vertical guide post bottom plate is mounted on the grinding motor mounting frame.

[0014] Further, the unit frame assembly includes a grinding unit frame and a rotating shaft. The grinding unit frame is mounted on the transverse guide post and can slide horizontally 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 frame. The grinding motor mounting frame can rotate relative to the grinding unit frame around the rotating shaft.

[0015] Further, a grinding wheel connection flange is mounted at the shaft end of the grinding motor, and the grinding wheel is mounted on the grinding wheel connection flange.

[0016] Further, the motor guiding assembly includes a vertical guide post top plate, vertical guide posts and a sliding back plate. The sliding back plate is 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 sleeved on the vertical guide posts and can slide up and down along the vertical guide posts.

[0017] Further, the rail grinding unit includes two grinding motors. Four vertical guide posts are mounted in pairs and parallel to each other on the vertical guide post bottom plate. Each grinding motor is mounted on two vertical guide posts through a sliding back plate. One end of the lifting drive mechanism is mounted on the grinding motor through a lifting drive mounting seat, and the other end is mounted on the grinding motor mounting frame through another lifting drive mounting seat. The lifting drive mechanism can drive the grinding motor to move up and down.

[0018] Further, a grinding motor back plate is provided between the vertical guide post bottom plate and the vertical guide post top plate.

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

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

[0021] Further, a reinforcing plate is connected between the vertical guide post top plate and the grinding motor mounting frame.

[0022] Further, a high-position locking assembly for the grinding motor is mounted on the grinding motor mounting frame to achieve the locking function when the grinding motor is in the high position.

[0023] Further, the high-position locking assembly for the grinding motor includes a locking plate, a fixed sliding seat, a high-position locking drive mechanism, and a locking drive mounting base. The fixed sliding seat is arranged on the vertical guide post bottom plate, and the locking drive mounting base is arranged on the grinding motor mounting frame. The locking plate is slidably connected to the fixed sliding seat, and the high-position locking drive mechanism is arranged on the locking drive mounting base. The locking plate is connected to the movable end of the high-position locking drive mechanism through a locking pin shaft. When the grinding motor is in the high position, the movable end of the high-position locking drive mechanism extends out, driving the locking plate to slide under the grinding motor back plate, thereby achieving high-position locking.

[0024] Further, a deflection locking assembly for the grinding motor is also mounted on the grinding motor mounting frame to achieve the locking function when the grinding motor mounting frame is in the zero position.

[0025] Further, the deflection locking assembly for the grinding motor includes a position detection travel switch, a deflection locking seat, and a deflection locking drive mechanism. The deflection locking seat is fixed on the grinding motor mounting frame and can deflect with the deflection of the grinding motor. The deflection locking drive mechanism is fixed on the grinding unit frame, and the position detection travel switch is mounted on the deflection locking seat. When the grinding motor is deflected by 0 degrees, the hole opened on the deflection locking seat is in an aligned state with the deflection locking drive mechanism, and the movable end of the deflection locking drive mechanism extends into the hole, thereby achieving deflection locking, and the position detection travel switch outputs a locking-in-place signal.

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

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

[0028] (1) The rail grinding unit and the rail grinding trolley of the present application adopt a new design of the grinding unit framework, with a more compact and streamlined structure, occupying less space. Two grinding motors can be arranged within the same grinding unit framework, thereby increasing the grinding head layout density, further improving the grinding efficiency, and enhancing the grinding quality.

[0029] (2) The rail grinding unit and the rail grinding trolley of the present application adopt an integrated double-axis sliding motor mounting backplane. The grinding motors can be independently lifted and lowered, reducing the part processing difficulty, improving the grinding head landing accuracy, reducing the vibration of the grinding motors, and further enhancing the grinding quality.

[0030] (3) The rail grinding unit and the rail grinding trolley of the present application adopt a grinding unit framework with a large opening structure design, which can increase the maintenance space, improve the maintainability of the grinding unit, reduce the overall vehicle length under the condition of a certain total number of grinding heads, enhance the flexibility of the whole vehicle, reduce the requirements for yards and stations, and can stop at more small stations or yards for supply.

[0031] (4) The rail grinding unit and the rail grinding trolley of the present application. The grinding unit has functions of downward pressure, deflection, and lateral movement, can grind the main line of the rail, effectively improve the rail grinding efficiency and quality, and at the same time has functions of high-position locking and deflection locking of the grinding motors, which can greatly enhance the grinding safety and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other embodiments can be obtained based on these drawings without creative efforts.

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

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

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

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

[0037] Figure 5 is the main view of the structural schematic diagram of a specific embodiment of the rail grinding unit of the present application;

[0038] Figure 6 It is a schematic side view of the structure of a specific embodiment of the rail grinding unit of the present application;

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

[0040] Figure 8 It is a schematic top view of the structure of a specific embodiment of the rail grinding unit of the present application;

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

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

[0043] Figure 11 It is a three-dimensional structure schematic diagram of the vehicle frame in a specific embodiment of the rail grinding cart of the present application;

[0044] Figure 12 It is a three-dimensional structure schematic diagram of the vehicle frame (excluding independent wheels) in a specific embodiment of the rail grinding cart of the present application;

[0045] Figure 13 It is a schematic top view of the structure of the vehicle frame in a specific embodiment of the rail grinding cart of the present application;

[0046] Figure 14 It is a schematic side view of the structure of the vehicle frame in a specific embodiment of the rail grinding cart of the present application;

[0047] Figure 15 It is a schematic front view of the structure of the vehicle frame in a specific embodiment of the rail grinding cart of the present application;

[0048] Figure 16 It is a schematic diagram of the installation structure of the vehicle frame in a specific embodiment of the rail grinding cart of the present application;

[0049] Figure 17 It is a three-dimensional structure schematic diagram of a specific embodiment of the rail grinding cart of the present application;

[0050] Figure 18 It is a schematic side view of the internal structure of a specific embodiment of the rail grinding cart of the present application;

[0051] Figure 19 It is a schematic top view of the internal structure of a specific embodiment of the rail grinding cart of the present application;

[0052] Figure 20 It is a schematic top view of the structure of a specific embodiment of the rail grinding cart of the present application;

[0053] Figure 21 is a three-dimensional internal structure view of a specific embodiment of the rail grinding trolley of the present application;

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

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

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

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

[0058] Figure 26 is a schematic structural view of the heat insulation structure in a specific embodiment of the rail grinding trolley of the present application;

[0059] In the figure: 1 - vehicle frame, 2 - rail grinding unit, 3 - fire and dust prevention device, 4 - independent wheel, 101 - frame longitudinal beam, 102 - frame cross beam, 103 - frame vertical beam, 104 - frame bottom plate, 105 - main beam longitudinal beam, 106 - main beam vertical beam, 107 - towing nose cover, 108 - towing nose seat, 109 - main beam bottom plate, 110 - end beam, 111 - inner reinforcing plate, 112 - wheel mounting plate, 113 - outer reinforcing plate, 114 - end beam rib plate, 115 - unit mounting seat, 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 frame, 206 - rotating shaft, 207 - lifting drive mechanism, 208 - lifting drive mounting seat, 209 - reinforcing plate, 210 - high-position locking assembly for grinding motor, 211 - deflection drive mechanism, 212 - deflection drive mounting seat, 213 - deflection locking assembly for grinding motor, 214 - vertical guide post top plate, 215 - vertical guide post, 216 - sliding back plate, 217 - vertical guide post bottom plate, 218 - connecting flange, 219 - grinding wheel, 220 - fire and heat insulation curtain, 221 - grinding motor back plate, 222 - locking plate, 223 - fixed sliding seat, 224 - sliding groove, 225 - high-position locking drive mechanism, 226 - locking drive mounting base, 227 - locking pin shaft, 228 - in-place detection travel switch, 229 - deflection locking seat, 230 - deflection locking drive mechanism, 231 - upper pressing strip, 232 - lower pressing strip, 233 - hole, 234 - transverse locking connecting rod, 303 - dust collection air inlet, 304 - intermediate dust collection port, 100 - rail grinding trolley. Detailed implementation manners

[0060] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0061] As shown in the attached Figure 1 to the attached Figure 26 figures, specific embodiments of the rail grinding unit and the rail grinding trolley of the present application are given. The present application will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0062] Embodiment 1

[0063] As shown in the attached Figure 1 to the attached Figure 8 figures, an embodiment of the rail grinding unit of the present application specifically includes: a suspension assembly, a unit frame assembly, a motor mounting platform, a motor guiding 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 guiding assembly is connected to the motor mounting platform. The grinding motor 204 is slidably connected to the motor guiding assembly, and the grinding wheel 219 is connected to the output shaft of the grinding motor 204. Both ends of the lifting drive mechanism 207 are respectively hinged to the grinding motor 204 and the motor mounting platform. Both ends of the deflection drive mechanism 211 are respectively hinged to the vehicle frame 1 and the motor mounting platform. As a typical embodiment of the present application, the lifting drive mechanism 207 may specifically adopt a lifting oil cylinder, and the deflection drive mechanism 211 may specifically adopt a deflection oil cylinder.

[0064] The suspension assembly further includes a unit suspension plate 201 and a transverse guide post 202. The unit suspension plate 201 is installed on the vehicle frame 1, and two transverse guide posts 202 are installed between the two unit suspension plates 201 in parallel and fixed at both ends by bolts. The suspension assembly is connected to the unit frame through bolts and mating grooves.

[0065] The motor mounting platform further includes a grinding motor mounting bracket 205 and a vertical guide post bottom plate 217. The vertical guide post bottom plate 217 is installed 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 installed on the transverse guide post 202 and can slide horizontally along the transverse guide post 202. The rotating shaft 206 is installed at 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 for realizing the transverse position locking of the rail grinding unit 2.

[0067] A grinding wheel connection flange 218 is installed at the shaft end of the grinding motor 204, and the grinding wheel 219 is installed on the grinding wheel connection flange 218.

[0068] The motor guiding assembly includes a vertical guide post top plate 214, vertical guide posts 215 and a sliding back plate 216. The sliding back plate 216 is fixed to the grinding motor 204. The vertical guide posts 215 are installed on a vertical guide post bottom plate 217 in parallel with each other, and the vertical guide post top plate 214 is installed above the vertical guide posts 215. The sliding back plate 216 is movably sleeved on 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. Four vertical guide posts 215 are installed on the vertical guide post bottom plate 217 in parallel with each other in pairs, and each grinding motor 204 is installed on two vertical guide posts 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.

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

[0071] As shown in the appendix Figure 9As shown, a high-position locking assembly 210 for the grinding motor is installed on the grinding motor mounting bracket 205 to achieve the locking function when the grinding motor 204 is in the high position. The high-position locking assembly 210 for the grinding motor includes a locking plate 222, a fixed slide base 223, a high-position locking drive mechanism 225, and a locking drive mounting base 226. The fixed slide base 223 is arranged on the vertical guide post base plate 217, and the locking drive mounting base 226 is arranged on the grinding motor mounting bracket 205. The locking plate 222 is slidably connected to the fixed slide base 223, and the high-position locking drive mechanism 225 is arranged on the locking drive mounting base 226. The locking plate 222 is connected to the movable end of the high-position locking drive mechanism 225 through a locking pin 227. When the grinding motor 204 is in the high position, the movable end of the high-position locking drive mechanism 225 extends, driving 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 the present application, the high-position locking drive mechanism 225 can specifically adopt a high-position locking oil cylinder.

[0072] As shown in the attached Figure 10 figure, a deflection locking assembly 213 for the grinding motor is also installed on the grinding motor mounting bracket 205 to achieve the locking function when the grinding motor mounting bracket 205 is in the zero position. The deflection locking assembly 213 for the grinding motor includes a position detection travel 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 deflection of the grinding motor 204. The deflection locking drive mechanism 230 is fixed on the grinding unit frame 203, and the position detection travel switch 228 is installed on the deflection locking seat 229. When the grinding motor 204 is deflected by 0 degrees, the hole 233 formed on the deflection locking seat 229 is in an aligned state 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 travel switch 228 outputs a locking-in-place signal. As a typical embodiment of the present application, the deflection locking drive mechanism 230 can specifically adopt a deflection locking oil cylinder.

[0073] As shown in the attached Figure 11 to the attached Figure 16 figure, the vehicle frame 1 specifically includes: a main beam assembly, a grinding device frame assembly, an end beam assembly, and a running assembly. The end beam assembly is arranged at the front and rear ends of the vehicle frame 1 along the operation direction (i.e., the longitudinal direction, as shown by the direction L in the attached Figure 11 figure, and the direction shown by W in the attached Figure 11 figure is the transverse direction, and the direction shown by H is the vertical direction). The main beam assembly is installed in the middle above the end beam assembly, and the grinding device frame assembly is installed on both sides along the transverse direction above the end beam assembly. The running 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 through a first boss 116 and a first groove 117.

[0074] The grinding device frame assembly further includes frame longitudinal beams 101, frame cross beams 102, frame vertical beams 103 and a frame bottom plate 104. Two frame longitudinal beams 101 are perpendicularly connected to two frame cross beams 102 to form a frame main body, and the four corners of the frame main body are connected to the tops of the frame vertical beams 103. The frame bottom 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 bottom plate 104.

[0075] The grinding device frame assembly further includes unit mounting seats 115. The unit mounting seats 115 are arranged inside the frame longitudinal beams 101, and the mounting distance between the unit mounting seats 115 is adjusted according to the number and width of the rail grinding units 2. At the same time, the positions of the unit mounting seats 115 can be adjusted according to the number of grinding heads and the form of the frame assembly, so that the frame 1 of the rail grinding trolley 100 is universal, and the number of grinding heads can be adjusted according to actual needs.

[0076] The end beam assembly further includes an end beam 110 and end beam rib plates 114. A first groove 117 matching with the first boss 116 is provided on the end beam 110, and the end beam rib plates 114 are arranged below the end beam 110.

[0077] The main beam assembly further includes a main beam vertical beam 106 and a main beam bottom plate 109. The two ends of the main beam longitudinal beam 105 in the longitudinal direction are connected to the main beam vertical beam 106, the main beam bottom plate 109 is arranged 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 bottom plate 109. A second groove 119 corresponding to and matching with the second boss 118 is provided on the end beam 110.

[0078] The main beam assembly further includes a traction nose cover 107 and a traction nose seat 108. The traction nose cover 107 and the traction nose seat 108 are arranged on the front side edges of the main beam vertical beam 106, and the traction nose cover 107 is arranged on the traction nose seat 108.

[0079] The running assembly 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 arranged on both sides of the wheel mounting plate 112 in the transverse direction, and independent wheels 4 are installed on the wheel mounting plate 112.

[0080] The rail grinding unit 2 adopts an integral dual-axis motor sliding back plate assembly. The grinding motor 204 can be independently lifted. By using an integral dual-axis sliding back plate, the part processing difficulty is reduced, the lifting precision of the grinding motor 204 is improved, the grinding precision is more easily guaranteed, and at the same time, the motor vibration is reduced, further improving the grinding quality. The grinding motor 204 is designed with high-position locking and deflection locking functions, which can greatly improve the grinding safety and stability. The rail grinding unit 2 has functions of pressing down, deflecting and transverse shifting, and can grind the main line of the rail, effectively improving the rail grinding efficiency and grinding quality.

[0081] Example 2

[0082] As shown in the attached Figure 18 to the attached Figure 24 figures, an embodiment of the rail grinding trolley 100 of the present application specifically includes:

[0083] Frame 1;

[0084] A fire and dust prevention device 3 arranged on the frame 1;

[0085] As described in Embodiment 1, a rail grinding unit 2 arranged on the frame 1 and located inside the fire and dust prevention device 3.

[0086] There are 6 grinding units 2 arranged in the fire and dust prevention device 3. Every two grinding units 2 are symmetrically arranged horizontally. Each grinding unit 2 includes 2 grinding motors 204. A grinding wheel connection flange 218 is installed at the shaft end of the grinding motor 204, and a grinding wheel 219 is installed on the grinding wheel connection flange 218. Existing rail grinding devices generally consist of 6, 8, 10, etc. grinding units. One grinding motor 204 is integrated inside each grinding unit. The grinding motor 204 drives the grinding wheel 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 6 rail grinding units 2 in the limited space of a single-section grinding trolley. Two grinding motors 204 are integrated inside each rail grinding unit 2, for a total of 12 grinding motors 204. A total of 12 grinding wheels 219 can be installed. Multiple grinding trolleys are hung under the rail grinding vehicle, and multiple grinding trolleys cooperate with each other to perform operations simultaneously. The increase in the number of grinding heads of a single-section grinding trolley can arrange more grinding wheels without changing the overall vehicle length and the number of grinding trolleys; or reduce the number of grinding trolleys without changing the total number of grinding wheels, so as to reduce the number of vehicle sections and the overall vehicle length. Increasing the number of grinding heads can effectively improve the grinding efficiency of the rail grinding vehicle. Reducing the overall vehicle length can improve the flexibility of the overall vehicle, reduce the requirements for the station yard and the station, and can stop at more small stations or station yards for resupply.

[0087] As shown in the attached Figure 25 and the attached Figure 26As shown in the figure, the upper end of the grinding motor back plate 221 is installed on the vertical guide post top plate 214, and the lower end is installed on the vertical guide post bottom plate 217. One end of the fireproof and heat-insulating curtain 220 is installed above the grinding motor back plate 221, and the other end is installed on the frame longitudinal beam 101 on the inner side of the grinding device frame. The area separated by the grinding motor back plate 221, the fireproof and heat-insulating curtain 220 and the internal intermediate plate assembly is the high-temperature area B, and the intermediate dust collection port 304 is located above the high-temperature area. The area separated by the grinding motor back plate 221, the fireproof and heat-insulating curtain 220, the side panel assembly and the top panel assembly is the low-temperature area A, and the dust collection air port 303 is located above the low-temperature area. The transverse guide post 202, the grinding motor 204, the lifting drive mechanism 207, the vertical guide post 215 and the deflection drive mechanism 211 are all arranged in the low-temperature area. The rail grinding operation will cause the inside of the grinding device to be high-temperature, and the high temperature will affect the continuous operation ability of the grinding device. In this embodiment, by arranging the fireproof and heat-insulating curtain 220 and the grinding motor back plate 221 behind the grinding motor 204, and designing the isolation of the high and low temperature areas inside the grinding device, the sparks cannot splash into the low-temperature area, restricting the flow of high-temperature air to the motor side, and the temperature rise in the low-temperature area becomes slower, thereby improving the continuous operation ability of the grinding device. At the same time, by dividing the inside of the grinding device into a high-temperature area and a low-temperature area, the key components (such as: the grinding motor and its drive mechanism, as well as its internal bearings, coils, sealing rings and other key parts) are in the low-temperature area, which can reduce the failure frequency of the key components due to high temperature. The specific embodiment also improves the air flow velocity inside the grinding device and reduces the overall temperature inside the grinding device by increasing the number of air suction ports and dissipating heat from the high-temperature area and the low-temperature area inside the grinding device respectively.

[0088] The rail grinding trolley 100 has the functions of lifting and traveling, and the rail grinding unit 2 has the functions of transverse movement, downward pressure and deflection. The above functional components act on the whole vehicle through fasteners, cables, hydraulic pipelines, pneumatic pipelines, etc. After the operation control software is compiled, it is stored in the whole vehicle network control system. The rail grinding trolley 100 is installed under the whole vehicle. When it is in the non-operation state, it is suspended under the vehicle body through a locking pin; when it is in the operation state, it realizes synchronous traveling with the whole vehicle through the traction column installed under the vehicle body. After the operation stops, the rail grinding trolley 100 can be lifted by the lifting oil cylinder and locked. When the rail grinding vehicle travels and operates on the track, the rail grinding trolley 100 falls on the track and can perform the grinding operation on the rail. The electrical and control systems of the grinding vehicle can realize the power supply control and operation action execution control of the rail grinding trolley 100.

[0089] It should be particularly noted that in the specific embodiment of the present application, the oil cylinder can be replaced by an electric cylinder or a pneumatic cylinder, and the pneumatic cylinder can also be replaced by an oil cylinder or an electric cylinder.

[0090] In the description of the present application, it should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly disposed on the other element or indirectly disposed on the other element. When an element is referred to as "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 orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present application.

[0092] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality of" and "several" is two or more, unless otherwise specifically defined.

[0093] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present application. Therefore, they do not have a substantial technical meaning. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present application can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present application.

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

[0095] (1) For the rail grinding unit and the rail grinding trolley described in the specific embodiments of the present application, a new grinding unit frame design is adopted, the structure is more compact and streamlined, occupies less space, and two grinding motors can be arranged within the same grinding unit frame, thereby increasing the grinding head arrangement density, further improving the grinding efficiency, and enhancing the grinding quality;

[0096] (2) For the rail grinding unit and the rail grinding trolley described in the specific embodiments of the present application, an integrated double-axis sliding motor mounting back plate is adopted, and the grinding motors can be independently lifted and lowered, reducing the part processing difficulty, improving the grinding head landing accuracy, reducing the vibration of the grinding motors, and further improving the grinding quality;

[0097] (3) The rail grinding unit and the rail grinding trolley described in the specific embodiments of the present 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 length of the whole vehicle under the condition of a certain total number of grinding heads, improve the flexibility of the whole vehicle, reduce the requirements for yards and stations, and can stop at more small stations or yards for replenishment;

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

[0099] The various embodiments in this specification are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0100] The above are only the preferred embodiments of the present application and do not impose any form of limitation on the present application. Although the present application has been disclosed above with the preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present application, or modify it into an equivalent embodiment with equivalent changes, without departing from the spirit and technical solution of the present application. Therefore, any simple modification, equivalent replacement, equivalent change, and modification made to the above embodiments based on the technical essence of the present application without departing from the technical solution of the present application still fall within the scope of protection of the technical solution of the present application.

Claims

1. A rail grinding unit, characterized in that: include: 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 comprises a unit suspension plate (201) and a transverse guide column (202); the unit suspension plate (201) is mounted on the vehicle frame (1); and two transverse guide columns (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 installation platform comprises a polishing motor installation frame (205) and a vertical guide column base plate (217), and the vertical guide column base plate (217) is installed on the polishing motor installation frame (205).

4. The rail grinding unit according to claim 3, characterized in that: The unit frame assembly comprises a grinding unit frame (203) and a rotating shaft (206); the grinding unit frame (203) is mounted on a transverse guide column (202) and can slide transversely along the transverse guide column (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 a grinding motor mounting frame (205); the grinding motor mounting frame (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: A grinding wheel connecting flange (218) is installed at the shaft end of the grinding motor (204), and a 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 comprises a vertical guide column top plate (214), a vertical guide column (215) and a sliding back plate (216), wherein the sliding back plate (216) is fixed on the grinding motor (204); the vertical guide columns (215) are installed on the vertical guide column bottom plate (217) in parallel with each other, and the vertical guide column top plate (214) is installed above the vertical guide column (215); the sliding back plate (216) can be movably sleeved on the vertical guide column (215) and can slide up and down along the vertical guide column (215).

7. The rail grinding unit according to claim 6, characterized in that: The invention comprises two grinding motors (204), four vertical guide columns (215) which are installed in pairs on a vertical guide column bottom plate (217) in parallel with each other, and 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 a grinding motor mounting frame (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 back plate (221) is provided between the vertical guide column bottom plate (217) and the vertical guide column top plate (214).

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 grinding motor back plate (221) and the vehicle frame (1).

10. The rail grinding unit according to claim 4, 5, 7, 8 or 9, characterized in that: One end of the deflection drive mechanism (211) is mounted on the grinding motor mounting frame (205) via a deflection drive mounting seat (212), and the other end is mounted on the vehicle frame (1) via another deflection drive mounting seat (212).

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

12. The rail grinding unit according to claim 4, 5, 7, 8, 9 or 11, characterized in that: A grinding motor high-position locking assembly (210) is installed on the grinding motor mounting frame (205) to realize a 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 grinding motor high-position locking assembly (210) comprises 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 arranged on the vertical guide column bottom plate (217), and the locking drive mounting base (226) is arranged on the grinding motor mounting frame (205); the locking plate (222) is slidably connected to the fixed slide (223), and the high-position locking drive mechanism (225) is arranged on the locking drive mounting base (226); the locking plate (222) is connected to the movable end of the high-position locking drive mechanism (225) through a locking pin shaft (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 to the bottom of the grinding motor back plate (221), thereby realizing high-position locking.

14. The rail grinding unit according to claim 4, 5, 7, 8, 9, 11 or 13, characterized in that: A grinding motor deflection locking assembly (213) is also installed on the grinding motor mounting frame (205), which realizes a locking function when the grinding motor mounting frame (205) is in the zero position.

15. The rail grinding unit according to claim 14, characterized in that: The grinding motor deflection locking assembly (213) comprises an in-position detection travel 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 frame (205) and can deflect as the grinding motor (204) deflects; the deflection locking drive mechanism (230) is fixed on the grinding unit frame (203), and the in-position detection travel switch (228) is installed on the deflection locking seat (229); when the grinding motor (204) is in a deflection of 0 degrees, the hole (233) provided on the deflection locking seat (229) and the deflection locking drive mechanism (230) are in an aligned state, and the movable end of the deflection locking drive mechanism (230) extends into the hole (233), thereby realizing deflection locking, and the in-position detection travel switch (228) outputs a locked in position signal.

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

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