A rail grinding trolley

Abstract

The present invention discloses a rail grinding trolley. The vehicle frame includes a middle beam, and grinding unit mounting frames which are symmetrically arranged on the left and right sides of the middle beam and can be independently lifted. The traction device adopts a vertical traction structure and is arranged at the front and rear ends along the operation direction of the grinding trolley. The traction device is installed at the bottom of the grinding vehicle and is connected to the middle beam. The fire and dust prevention device is installed on the vehicle frame. The grinding unit is installed on the grinding unit mounting frame and is arranged inside the fire and dust prevention device. One end of the lifting device is connected to the bottom of the grinding vehicle, and the other end is connected to the vehicle frame. The grinding trolley can be fixed to the bottom of the grinding vehicle through a locking device. The present invention can solve the technical problems that the traction rod of the existing rail grinding trolley is an inclined traction rod, which will reduce the load of the grinding trolley, and may cause the grinding trolley to derail in extreme cases, and only overall lifting can be performed.

Description

Technical Field

[0001] The present invention relates to the technical field of track construction machinery, and in particular to a working execution mechanism of a rail grinding vehicle - the structure of a grinding carriage. Background Art

[0002] During the operation of a train, due to the long-term exposure of rails to a harsh working environment, multiple factors such as dynamic action, natural environment, and the quality of the rails themselves lead to the continuous deterioration of the rail surface conditions and the deformation of the rail head, resulting in defects such as corrugation, overhang, spalling, and fish-scale on the rail surface, which affect the train operation safety. Rail grinding can remove the unevenness on the rail surface and restore the rail head to the initial design requirements, thereby effectively improving the wheel-rail relationship, slowing down the development of rail surface defects, increasing the smoothness of the rail surface, and extending the service life of the rails. The grinding carriage is the working execution mechanism of the grinding operation and is a key component structure of the rail grinding vehicle.

[0003] In the prior art, the following technical solutions are mainly related to the present invention application:

[0004] The prior art 1 is a utility model patent with an application date of December 16, 2014, a publication date of May 13, 2015, and a publication number of CN204325831U. This utility model discloses a subway rail grinding vehicle, which includes a vehicle frame body. A grinding unit is provided on the vehicle frame body. The grinding unit is divided into a special grinding unit and a general grinding unit and is connected by a translation mechanism. The translation mechanism is provided with a spacing hydraulic cylinder, a contact hydraulic cylinder, a tension hydraulic cylinder, and a centering hydraulic cylinder. Traveling wheels are provided at the lower part of the vehicle frame body. The vehicle frame body is suspended on the grinding train, and a lifting hydraulic cylinder is provided between the vehicle frame body and the grinding train. A locking device is provided between the vehicle frame body and the grinding train. A traction device is provided between the vehicle frame body and the grinding train. It can correct complex wavy wear of subway line rails, wheel-rail abrasion, correct the inclination deformation of the inner and outer rails, and trim defects such as the wheel-rail contact surface, etc., and is applicable to subway line operations, for grinding straight, curved, and turnout rails.

[0005] The prior art 2 is a utility model patent with an application date of April 22, 2014, a publication date of July 30, 2014, and a publication number of CN203741663U. This utility model discloses a rail grinding vehicle, which includes a vehicle frame body. A grinding unit is provided on the vehicle frame body. Traveling wheels are provided at the lower part of the vehicle frame body. The vehicle frame body is suspended on the grinding train, and a lifting hydraulic cylinder is provided between the vehicle frame body and the grinding train. A locking device is provided between the vehicle frame body and the grinding train. A traction device is provided between the vehicle frame body and the grinding train. It can correct wavy wear of the track, wheel-rail abrasion, correct the inclination deformation of the inner and outer rails, and trim defects such as the wheel-rail contact surface, etc., and is applicable to large-scale track maintenance operations, for grinding straight and curved rails.

[0006] The structures of the grinding trolleys described in the above two patents are basically the same. The grinding trolleys with such structures mainly have the following technical defects:

[0007] (1) The wheelbase of the grinding trolley is fixed and it can only run on standard rails;

[0008] (2) The towing bar of the grinding trolley is an inclined towing bar, which will unload the grinding trolley and may cause the grinding trolley to derail in extreme cases;

[0009] (3) The grinding trolley can only be lifted as a whole;

[0010] (4) The grinding unit of the grinding trolley does not have the function of lateral movement;

[0011] (5) The grinding trolley is designed with 8 fixed grinding heads and the number of grinding heads cannot be changed;

[0012] (6) The structure of the grinding trolley is heavy and it is very difficult to maintain the grinding unit and the grinding motor.

[0013] The prior art 3 is a Chinese invention application with an application date of March 8, 2019 and a publication date of May 14, 2019, and the publication number is CN109750566A. This application discloses a rail grinding trolley, which includes a frame, a grinding unit and a derailment protection device. Towing bars are installed on both sides above the frame, and running wheels are fixed below the frame. The grinding unit is arranged inside the frame, and a dust collection channel is installed above the frame. The derailment protection device is fixed on both left and right sides of the frame, and lifting devices are installed on both sides inside the frame. A deflection electric cylinder is arranged below the lifting device, and a guide rod is installed below the deflection electric cylinder. A guide seat is arranged outside the guide rod, and an electric cylinder is fixed on one side of the guide seat. This rail grinding trolley is provided with a lateral movement structure for easy translation. The guide seat can displace on the guide rod under the drive of the electric cylinder, so as to realize the lateral movement of the grinding unit, which is convenient for avoiding obstacles on both sides of the rail during grinding and expanding the operation range.

[0014] The grinding trolley with the above structure mainly has the following technical defects:

[0015] (1) The wheelbase of the grinding trolley is fixed and it can only run on standard rails;

[0016] (2) The towing bar of the grinding trolley is an inclined towing bar, which will unload the grinding trolley and may cause the grinding trolley to derail in extreme cases;

[0017] (3) The grinding trolley can only be lifted as a whole.

[0018] The prior art 4 is a Chinese invention application with an application date of January 20, 2020 and a publication date of May 12, 2020, and the publication number is CN111139698A. This application discloses a subway rail grinding vehicle, including: a vehicle body, and a rail grinding trolley suspended under the vehicle body through a lifting mechanism. The rail grinding trolley includes two mutually articulated grinding trolleys. The rail grinding trolley further includes an elastic traction rod and a rigid traction rod. One of the grinding trolleys is connected to the vehicle body through the elastic traction rod, and the other grinding trolley is connected to the vehicle body through the rigid traction rod. The traction of the rail grinding trolley is realized through the elastic traction rod and the rigid traction rod. This application can solve the technical problems of limited application occasions, poor running stability, and unsatisfactory grinding quality and effect of the existing subway rail grinding vehicles.

[0019] The grinding trolley adopting this structure mainly has the following technical defects:

[0020] (1) The wheelbase of the grinding trolley is fixed and can only run on standard rails;

[0021] (2) The traction rod of the grinding trolley is an inclined traction rod, which will unload the grinding trolley, and in extreme cases, it may cause the grinding trolley to derail;

[0022] (3) The grinding trolley can only be lifted as a whole. Summary of the Invention

[0023] In view of this, the purpose of the present invention is to provide a rail grinding trolley to solve the technical problems that the traction rod of the existing rail grinding trolley is an inclined traction rod, which will unload the grinding trolley, and may cause the grinding trolley to derail in extreme cases, and can only be lifted as a whole.

[0024] In order to achieve the above invention purpose, the present invention specifically provides a technical implementation scheme of a rail grinding trolley. The rail grinding trolley is installed under the grinding vehicle. The grinding trolley includes: a frame, a fire and dust prevention device, a locking device, a grinding unit, a traction device and a lifting device. The frame includes a middle beam, and grinding unit mounting frames arranged symmetrically on the left and right sides of the middle beam along the working direction of the grinding trolley, which can be independently lifted. The traction device adopts a vertical traction structure and is arranged at the front and rear ends along the working direction of the grinding trolley. The traction device is installed at the bottom of the grinding vehicle and is connected to the middle beam. The fire and dust prevention device is installed on the frame. The grinding unit is installed on the grinding unit mounting frame and is arranged inside the fire and dust prevention device. One end of the lifting device is connected to the bottom of the grinding vehicle, and the other end is connected to the frame. The grinding trolley can be fixed to the bottom of the grinding vehicle through the locking device.

[0025] Further, the vehicle frame further includes a running wheel mounting seat, running wheels, wheel gauge adjusting guide columns, wheel gauge adjusting guide sleeves, and a wheel gauge adjusting mechanism. The two wheel gauge adjusting guide columns are respectively fixedly connected to the front and rear ends of the middle beam along the working direction of the grinding trolley. Both ends of the wheel gauge adjusting guide column in the length direction are sleeved with wheel gauge adjusting guide sleeves. One end of the wheel gauge adjusting mechanism is connected to a connecting seat on the middle beam, and the other end is connected to the wheel gauge adjusting guide sleeve. The running wheels are mounted below the wheel gauge adjusting guide sleeve through the running wheel mounting seat. By the telescopic movement of the wheel gauge adjusting mechanism, the wheel gauge adjusting guide sleeve is driven to move horizontally on the wheel gauge adjusting guide column, and further drives the running wheels connected to the wheel gauge adjusting guide sleeve to move horizontally, so as to realize the adjustment of the wheel gauge of the running wheels.

[0026] Further, the vehicle frame further includes a grinding device lifting guide column and a grinding device lifting guide sleeve sleeved outside the grinding device lifting guide column. The upper part of the grinding device lifting guide column is connected to the end of the grinding unit mounting frame along the working direction of the grinding trolley. The grinding device lifting guide sleeve is fixedly connected to the wheel gauge adjusting guide sleeve at the same end. The vehicle frame further includes a grinding device lifting mechanism. One end of the two grinding device lifting mechanisms is respectively connected to the front and rear ends of the grinding unit mounting frame along the working direction of the grinding trolley, and the other end is connected to the wheel gauge adjusting guide sleeve on the same side. At both the front and rear ends of the grinding unit mounting frame along the working direction of the grinding trolley, a pair of grinding device lifting guide columns are provided, and the grinding device lifting mechanism is arranged between the two grinding device lifting guide columns. When the grinding device lifting mechanism moves telescopically, it drives the grinding device lifting guide column to move up and down relative to the grinding device lifting guide sleeve, so as to realize the lifting movement of the grinding unit mounting frame relative to the middle beam.

[0027] Further, the vehicle frame further includes guide sleeve connecting parts, which are respectively arranged at the front and rear ends of the grinding unit mounting frame along the working direction of the grinding trolley and are connected between the two grinding device lifting guide sleeves at the same end. The wheel gauge adjusting guide column is fixedly connected to the middle beam through a connecting seat. At both the front and rear ends of the vehicle frame along the working direction of the grinding trolley, a pair of wheel gauge adjusting mechanisms are provided. One end of the wheel gauge adjusting mechanism is connected to the connecting seat, and the other end is connected to the wheel gauge adjusting guide sleeve on the same side.

[0028] Furthermore, the grinding unit mounting frame includes a first grinding unit mounting frame and a second grinding unit mounting frame. The first grinding unit mounting frame and the second grinding unit mounting frame can be lifted independently of each other, so that when the grinding cart encounters unilateral obstacles during operation, the corresponding grinding unit mounting frame can be lifted separately. Grinding unit mounting seats are welded on the first grinding unit mounting frame and the second grinding unit mounting frame, and the grinding units are fixedly connected to the grinding unit mounting seats by bolts. The installation quantity of the grinding units is changed by adjusting the relative positions of the grinding unit mounting seats.

[0029] Furthermore, the traction device includes a traction rod mounting seat, a traction rod and a traction rod guide sleeve. The traction rod mounting seat is fixed to the bottom of the grinding cart. The top end of the traction rod is connected to the traction rod mounting seat. The traction rod guide sleeve is sleeved on the traction rod, and the traction rod guide sleeve is connected to the middle beam through a traction connecting plate. The traction force of the grinding cart is transmitted to the vehicle frame through the traction rod mounting seat, the traction rod, the traction rod guide sleeve and the traction connecting plate, thereby driving the grinding cart to operate.

[0030] Furthermore, the lifting device includes a grinding cart lifting mechanism, an upper mounting seat and a lower mounting seat. One end of the grinding cart lifting mechanism is fixed to the bottom of the grinding cart through the upper mounting seat, and the other end is fixed to the running wheel mounting seat through the lower mounting seat. The overall lifting and lowering of the grinding cart are controlled by the grinding cart lifting mechanism.

[0031] Furthermore, the fire and dust prevention device includes a middle baffle, a cover plate, a door, a dust collecting curtain, an end baffle and a fire curtain. The cover plates are arranged on the left and right sides of the dust collecting curtain along the operation direction of the grinding cart and are installed on the vehicle frame of the grinding cart. One side of the dust collecting curtain is connected to the bottom of the vehicle body of the grinding cart, and the opposite side is connected to the cover plate. The doors are arranged on the left and right sides of the grinding cart along the operation direction and are connected to the cover plate through hinges. The middle baffle is suspended and connected below the vehicle frame. The end baffles are arranged at the front and rear ends of the grinding cart along the operation direction and are installed on the vehicle frame. Fire curtains are connected to the lower parts of the doors and the end baffles.

[0032] Furthermore, a rail-leaning device is also arranged between two adjacent grinding units on the first grinding unit mounting frame and / or the second grinding unit mounting frame. By calculating the relative change amount of the initial position and the moving position after leaning on the rail of the rail-leaning device and combining with the initial position of the first transverse movement mechanism of the grinding unit, the transverse movement amount of the first transverse movement mechanism is obtained.

[0033] Further, the rail-leaning device includes mounting plates, transverse movement guide columns, transverse movement guide sleeves, a second transverse movement mechanism, vertical movement guide sleeve columns, a vertical movement mechanism, a rail-leaning wheel mounting seat, rail-leaning wheels, a first elastic member, and a second elastic member. The two mounting plates are arranged opposite to each other and fixed to the frame of the grinding trolley. The transverse movement guide columns are connected between the two mounting plates. The transverse movement guide sleeves are sleeved on the transverse movement guide columns. One end of the second transverse movement mechanism is connected to the mounting plate, and the other end is connected to the transverse movement guide sleeve. One end of the first elastic member is connected to the mounting plate, and the other end is connected to the transverse movement guide sleeve. One end of the vertical movement guide sleeve column is connected to the transverse movement guide sleeve, and the other end extends downward and is connected to the rail-leaning wheel mounting seat. The rail-leaning wheels are mounted on the rail-leaning wheel mounting seat. One end of the vertical movement mechanism is connected to the transverse movement guide sleeve, and the other end is connected to the rail-leaning wheel mounting seat. The first elastic member is connected between the mounting plate and the transverse movement guide sleeve, and the second elastic member is connected between the transverse movement guide sleeve and the rail-leaning wheel mounting seat. When the acting force of the second transverse movement mechanism is unloaded, the first elastic member causes the transverse movement guide sleeve to be subjected to an acting force pointing in the rail-leaning direction of the rail-leaning wheel, realizing the leaning pressure of the rail-leaning wheel on the side of the rail.

[0034] By implementing the technical solution of the rail grinding trolley provided by the present invention as described above, the following beneficial effects are achieved:

[0035] (1) For the rail grinding trolley of the present invention, the traction device uses vertical traction rods, and one is arranged at each of the front and rear ends of a single grinding trolley. The vertical traction rods avoid the load-reducing effect of the traditional inclined traction rods on the grinding trolley, and can better realize the compact design of the overall structure size of the grinding trolley. At the same time, an independently liftable grinding unit mounting frame is adopted;

[0036] (2) For the rail grinding trolley of the present invention, a left-right independent and symmetric mounting frame structure is adopted, and a grinding device lifting mechanism is provided, which can realize the independent lifting of the left and right frames relative to the grinding trolley, so that the grinding states of the two frames do not affect each other. When the grinding head on one side of the track needs to avoid obstacles and lift during the operation, only the corresponding frame needs to be lifted, avoiding the frequent lifting and lowering of the entire grinding trolley during the operation, which affects the grinding efficiency;

[0037] (3) For the rail grinding trolley of the present invention, the distance between the mounting seats of the grinding units on the left and right side frames is designed to be adjustable. By adjusting the mounting distance between the grinding units, rail grinding trolleys with different numbers of grinding heads can be obtained to meet the diverse needs of customers;

[0038] (4) For the rail grinding trolley of the present invention, the frame adopts an independent symmetrical frame structure. The grinding unit installation frame is located at the top of the trolley. The spaces in the middle and lower parts of the trolley are both open structures and are modularized. When problems occur in the unilateral frame or the grinding unit, specific modules can be disassembled and maintained targeted, enabling more convenient disassembly, installation, and repair, significantly reducing the maintenance cost, and providing great convenience for the subsequent maintenance of the grinding trolley and the grinding unit.

[0039] (5) For the rail grinding trolley of the present invention, the relative position relationship between the grinding wheel and the rail can be accurately positioned by using the rail-leaning device, greatly improving the grinding effect; it can grind many areas of the railway line including turnouts, with a wide application range and strong adaptability; it can make full use of the internal space of the grinding trolley, and the operation process is simple, effectively avoiding interference between the flange surface of the rail-leaning wheel and the side surface of the rail during the rail-leaning process.

[0040] (6) For the rail grinding trolley of the present invention, the fire and dust prevention device structure is optimized. The side door adopts a movable connection method, enabling the door to open at a large angle. When it is necessary to repair and maintain the internal structure of the grinding trolley, there are no other baffles on the side after the door is directly opened, so that the internal structure of the grinding trolley can be directly operated, making the subsequent repair and maintenance work of the grinding trolley more convenient and fast, and significantly reducing the maintenance cost.

[0041] (7) For the rail grinding trolley of the present invention, the grinding unit in the grinding trolley has a transverse movement function, which can meet the grinding requirements of various lines such as main lines and turnouts, and can effectively improve the rail grinding quality while achieving a wide range of coverage of the grinding angle. Brief Description of the Drawings

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other embodiments can be obtained based on these drawings.

[0043] Figure 1 It is a schematic side view of the structure of a specific embodiment of the rail grinding trolley of the present invention;

[0044] Figure 2 It is a schematic top view of the structure of a specific embodiment of the rail grinding trolley of the present invention;

[0045] Figure 3 It is a schematic front view of the structure of a specific embodiment of the rail grinding trolley of the present invention;

[0046] Figure 4It is a schematic perspective view of a specific embodiment of the rail grinding trolley of the present invention;

[0047] Figure 5 It is a schematic perspective view of a specific embodiment of the rail grinding trolley of the present invention from another perspective;

[0048] Figure 6 It is a schematic perspective view of the frame in a specific embodiment of the rail grinding trolley of the present invention;

[0049] Figure 7 It is a schematic partial view of a specific embodiment of the rail grinding trolley of the present invention after removing part of the top cover plate;

[0050] Figure 8 It is a schematic enlarged partial view of the interior of a specific embodiment of the rail grinding trolley of the present invention;

[0051] Figure 9 It is a schematic perspective view of the fire and dust prevention device in a specific embodiment of the rail grinding trolley of the present invention;

[0052] Figure 10 It is a schematic perspective view of the fire and dust prevention device in a specific embodiment of the rail grinding trolley of the present invention from another perspective;

[0053] Figure 11 It is a schematic side view of the structure of the fire and dust prevention device in a specific embodiment of the rail grinding trolley of the present invention;

[0054] Figure 12 It is a schematic front view of the structure of the fire and dust prevention device in a specific embodiment of the rail grinding trolley of the present invention;

[0055] Figure 13 It is a schematic front view of the structure of the rail-leaning device in a specific embodiment of the rail grinding trolley of the present invention;

[0056] Figure 14 It is a schematic perspective view of the rail-leaning device in a specific embodiment of the rail grinding trolley of the present invention;

[0057] Figure 15 It is a schematic perspective view of the rail-leaning device in a specific embodiment of the rail grinding trolley of the present invention from another perspective;

[0058] Figure 16 It is a schematic side view of the structure of the rail-leaning device in a specific embodiment of the rail grinding trolley of the present invention;

[0059] In the figure: 1 - First grinding unit mounting frame, 2 - Left grinding unit, 3 - Central beam, 4 - Drawbar mounting seat, 5 - Drawbar, 6 - Grinding trolley lifting mechanism, 7 - Drawbar guide sleeve, 8 - Running wheel mounting seat, 9 - Running wheel, 10 - Wheelbase adjustment guide post, 11 - Wheelbase adjustment guide sleeve, 12 - Wheelbase adjustment mechanism, 13 - Guide sleeve connection part, 14 - Grinding device lifting guide post, 15 - Grinding device lifting mechanism, 16 - Fire and dust prevention device, 17 - Right grinding unit, 18 - Second grinding unit mounting frame, 19 - Grinding device lifting guide sleeve, 20 - Connecting seat, 21 - Grinding unit mounting seat, 22 - Drawbar connecting plate, 23 - Upper mounting seat, 24 - Lower mounting seat, 25 - Rail contact wheel, 26 - Limiting sleeve, 27 - Transverse movement mechanism 1, 30 - Rail, 100 - Grinding vehicle, 200 - Grinding trolley, 300 - Vehicle frame, 400 - Fire and dust prevention device, 401 - Longitudinal beam, 402 - Middle baffle, 403 - Cover plate, 404 - Hinge, 405 - Door, 406 - Side fire curtain, 407 - Dust collecting curtain, 408 - Door buffer mechanism, 409 - Mounting seat, 410 - End baffle, 411 - End fire curtain, 412 - Handle, 500 - Locking device, 600 - Grinding unit, 700 - Rail contact device, 701 - Mounting plate, 702 - Transverse movement guide post, 703 - Transverse movement guide sleeve, 704 - Transverse movement mechanism 2, 705 - Vertical movement guide sleeve guide post, 706 - Vertical movement mechanism, 707 - Rail contact wheel mounting seat, 708 - Rail contact wheel, 709 - First elastic component, 710 - Second elastic component, 711 - Dust prevention baffle, 712 - Partition board, 713 - First connecting plate, 714 - Second connecting plate, 715 - Vertical movement guide post, 716 - Vertical movement guide sleeve, 800 - Traction device, 900 - Lifting device. Detailed implementation manners

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

[0061] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly disposed 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.

[0062] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "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 therefore should not be construed as a limitation to the present application.

[0063] In addition, the terms "first" and "second" are only used for descriptive purposes and should not 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.

[0064] 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 the art to understand and read, and are not used to limit the implementable conditions 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 efficacy that the present application can produce and the purpose that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present application.

[0065] As shown in the attached Figure 1 to the attached Figure 16 figures, specific embodiments of the rail grinding trolley of the present invention are given. The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0066] As shown in the attached Figure 1 to the attached Figure 5 figures, an embodiment of a rail grinding trolley is installed at the lower part of the grinding vehicle 100. The grinding trolley 200 specifically includes: a vehicle frame 300, a fire and dust prevention device 400, a locking device 500, a grinding unit 600, a traction device 800, and a lifting device 900. The vehicle frame 300 includes a middle beam 3, and grinding unit mounting frames that are symmetrically arranged on both sides of the middle beam 3 along the operation direction of the grinding trolley 200 (such as the direction shown by L in the attached Figure 1 to the attached Figure 5 figures) and can be independently lifted and lowered. As shown in the attached Figure 7As shown in the figure, the grinding unit installation frame further includes a first grinding unit installation frame 1 (for installing the left grinding unit 2) and a second grinding unit installation frame 18 (for installing the right grinding unit 17). The traction device 800 further adopts a vertical traction structure and is arranged at the front and rear ends along the operation direction of the grinding trolley 200. The traction device 800 is installed at the bottom of the grinding vehicle 100 and is connected to the middle beam 3. The fire and dust prevention device 400 is installed on the vehicle frame 300. The grinding unit 600 is installed on the grinding unit installation frame and is arranged inside the fire and dust prevention device 400. One end of the lifting device 900 is connected to the bottom of the grinding vehicle 100, and the other end is connected to the vehicle frame 300. The grinding trolley 200 can be fixed to the bottom of the grinding vehicle 100 through the locking device 500. The rail grinding trolley described in the specific embodiment of the present invention has multiple functions such as adjusting the wheel gauge of the running wheels, meeting the requirements of different numbers of grinding units, and avoiding obstacles in time during the grinding process, and can meet the grinding requirements of various lines including main lines, turnouts, etc.

[0067] As shown in the attached Figure 6 figure, the vehicle frame 300 further includes a running wheel mounting seat 8, running wheels 9, wheel gauge adjusting guide posts 10, wheel gauge adjusting guide sleeves 11, and a wheel gauge adjusting mechanism 12. Two wheel gauge adjusting guide posts 10 are respectively fixedly connected to the front and rear ends of the middle beam 3 along the operation direction of the grinding trolley 100. Both ends of the wheel gauge adjusting guide post 10 in the length direction (such as the direction shown by W in the attached Figure 6 figure) are sleeved with wheel gauge adjusting guide sleeves 11. One end of the wheel gauge adjusting mechanism 12 is bolted to the connecting seat 20 on the middle beam 3, and the other end is bolted and fixed to the wheel gauge adjusting guide sleeve 11. The running wheels 9 are installed below the wheel gauge adjusting guide sleeve 11 through the running wheel mounting seat 8. Limit sleeves 26 are also installed at both ends of the wheel gauge adjusting guide post 10 for axially limiting the wheel gauge adjusting guide sleeve 11. By the expansion and contraction of the wheel gauge adjusting mechanism 12, the wheel gauge adjusting guide sleeve 11 is driven to move horizontally on the wheel gauge adjusting guide post 10, and further drives the running wheels 9 connected to the wheel gauge adjusting guide sleeve 11 to move horizontally, realizing the adjustment of the wheel gauge of the running wheels 9.

[0068] The frame 300 further includes a grinding device lifting guide post 14 and a grinding device lifting guide sleeve 19 sleeved outside the grinding device lifting guide post 14. The upper part of the grinding device lifting guide post 14 is connected to the end of the grinding unit mounting frame along the working direction of the grinding carriage 200, and the grinding device lifting guide sleeve 19 is fixedly connected to the wheelbase adjusting guide sleeve 11 at the same end. The grinding device lifting guide sleeve 19 is welded to the wheelbase adjusting guide sleeve 11, while the grinding device lifting guide post 14 is connected to the first grinding unit mounting frame 1 and the second grinding unit mounting frame 18. Two grinding device lifting guide posts 14 are installed at the front and back of both the first grinding unit mounting frame 1 and the second grinding unit mounting frame 18. The total of four grinding device lifting guide posts 14 are arranged in pairs and parallel to each other. The frame 300 further includes a grinding device lifting mechanism 15. One end of each of the two grinding device lifting mechanisms 15 is respectively connected to the front and back ends of the grinding unit mounting frame along the working direction of the grinding carriage 200, and the other end is connected to the wheelbase adjusting guide sleeve 11 on the same side. Paired grinding device lifting guide posts 14 are provided at the front and back ends of the grinding unit mounting frame along the working direction of the grinding carriage 200, and the grinding device lifting mechanism 15 is arranged between the two grinding device lifting guide posts 14. When the grinding device lifting mechanism 15 moves telescopically, it drives the grinding device lifting guide post 14 to move up and down relative to the grinding device lifting guide sleeve 19 along the vertical direction (such as the direction shown by H in the attachment Figure 6 ), thereby realizing the lifting movement of the grinding unit mounting frame relative to the central beam 3.

[0069] In the specific embodiment of the present invention, the design of four grinding device lifting guide posts 14 and a double grinding device lifting mechanism 15 enables the first grinding unit mounting frame 1 and the second grinding unit mounting frame 18 to move smoothly, thereby effectively reducing the vibration of the grinding unit 600 caused by the telescopic movement of the grinding device lifting mechanism 15. At the same time, the grinding carriage frame in the prior art adopts an integral frame structure and can only achieve overall lifting or lowering. In the case where the single-sided track grinding head needs to avoid obstacles and lift, the entire grinding carriage needs to be lifted, which greatly affects the grinding operation efficiency. The rail grinding carriage described in the specific embodiment of the present invention adopts an independent and symmetric frame structure on the left and right sides. The first grinding unit mounting frame 1 and the second grinding unit mounting frame 18 can be lifted independently of each other, enabling the rail grinding carriage to lift the corresponding grinding unit mounting frame and the grinding unit 600 separately when encountering unilateral obstacles during the operation process, realizing the independence of the movement of the grinding unit mounting frames on the left and right sides, avoiding the frequent overall lifting of the grinding carriage 200 during the operation process, thereby achieving effective obstacle avoidance on the premise of avoiding lifting the grinding carriage 200, improving the safety of the grinding operation, and enhancing the grinding operation efficiency.

[0070] The frame 300 further includes guide sleeve connection parts 13. The two guide sleeve connection parts 13 are respectively arranged at the front and rear ends of the grinding unit installation frame along the operation direction of the grinding trolley 200, and are connected between the two grinding device lifting guide sleeves 19 at the same end. The wheel gauge adjusting guide post 10 is fixedly connected to the middle beam 3 through the connecting seat 20. Paired wheel gauge adjusting mechanisms 12 are arranged at both the front and rear ends of the frame 300 along the operation direction of the grinding trolley 200. One end of the wheel gauge adjusting mechanism 12 is connected to the connecting seat 20, and the other end is connected to the wheel gauge adjusting guide sleeve 11 on the same side. By the expansion and contraction of the wheel gauge adjusting mechanism 10, the wheel gauge adjusting guide sleeve 8 is driven to move on the wheel gauge adjusting guide post 7, and further drives the running wheel 9 connected to the wheel gauge adjusting guide sleeve 8 to move, so as to realize the adjustment of the wheel gauge of the running wheel 9. After the wheel gauge of the running wheel 9 is adjusted, the position of the wheel gauge adjusting guide sleeve 8 on the wheel gauge adjusting guide post 7 is locked by tightening bolts. The wheel gauge of the rail grinding trolley in the prior art is basically fixed, so it can only operate on the rail lines with corresponding gauge. The rail grinding trolley described in the specific embodiment of the present invention, the frame 300 has multiple functions such as adjusting the wheel gauge of the running wheel 9, meeting the requirements of different numbers of grinding units 600, and avoiding obstacles in time during the grinding process, and is applicable to various types of rail grinding vehicles. Its function of changing the wheel gauge of the running wheel can meet the grinding requirements of different line gauges (standard gauge, wide gauge, narrow gauge).

[0071] The first grinding unit mounting frame 1 and the second grinding unit mounting frame 18 can be lifted independently of each other, so that when the grinding trolley 200 encounters an obstacle on one side during operation, the corresponding grinding unit mounting frame can be lifted separately. Grinding unit mounting seats 21 are welded on the first grinding unit mounting frame 1 and the second grinding unit mounting frame 4. The grinding unit 600 is fixedly connected to the grinding unit mounting seat 21 by bolts. The number of installed grinding units is changed by adjusting the relative positions of the grinding unit mounting seats 21. There are 2 to 8 relatively independent grinding units 300 installed on the first grinding unit mounting frame 1 or the second grinding unit mounting frame 4. The grinding unit mounting seats 2 are opposite to each other in pairs and are symmetrically welded to the first grinding unit mounting frame 1 and the second grinding unit mounting frame 4. Grinding unit mounting seats 2 are respectively welded on the first grinding unit mounting frame 1 and the second grinding unit mounting frame 4. The grinding unit 600 is fixedly connected to the corresponding grinding unit mounting frame by bolts. During manufacturing, the number of installable grinding units 600 can be changed by adjusting the relative positions of the grinding unit mounting seats 2. Each side frame can install 2 to 8 relatively independent grinding units 600. Thus, the number of grinding heads of the rail grinding vehicle can be flexibly adjusted according to the actual engineering needs. Compared with the structural design of the existing grinding trolley with a fixed number of grinding heads, it can meet the diverse needs of customers. The rail grinding trolley described in the specific embodiments of the present invention adopts an independent and symmetrical grinding unit mounting frame structure. When a problem occurs with the mounting frame or the grinding unit 600 on one side, specific modules can be disassembled and maintained targeted, which is more convenient for disassembly, installation and repair, and significantly reduces the maintenance cost. At the same time, the frame of the existing grinding trolley adopts an overall frame closed structure, and rectangular crossbeams are provided on the side and middle parts of the trolley. Such a structure causes great difficulties in the maintenance of the grinding trolley. In the rail grinding trolley described in the specific embodiments of the present invention, the grinding unit mounting frame is located at the top of the trolley, and the middle and lower spaces of the trolley are both open structures and adopt a modular structure. When a problem occurs with the frame or the grinding unit on one side, specific modules can be disassembled and maintained targeted, which is more convenient for disassembly, installation and repair, and significantly reduces the maintenance cost, providing great convenience for the subsequent maintenance of the grinding trolley and the grinding unit.

[0072] As shown in the attached Figure 5 figure, the traction device 800 further includes a traction rod mounting seat 4, a traction rod 5 and a traction rod guide sleeve 7. The traction rod mounting seat 4 is fixed to the bottom of the grinding vehicle 100. The top end of the traction rod 5 is connected to the traction rod mounting seat 4. The traction rod guide sleeve 7 is sleeved on the traction rod 5. The traction rod guide sleeve 7 is connected to the middle beam 3 through a traction connecting plate 22. The traction force of the grinding vehicle 100 is transmitted to the vehicle frame 300 through the traction rod mounting seat 4, the traction rod 5, the traction rod guide sleeve 7 and the traction connecting plate 22, thereby driving the grinding trolley 200 to operate.

[0073] As shown in the appendix Figure 5 As shown, the lifting device 900 further includes a grinding trolley lifting mechanism 6, an upper mounting seat 23 and a lower mounting seat 24. One end of the grinding trolley lifting mechanism 6 is fixed to the bottom of the grinding vehicle 100 through the upper mounting seat 23, and the other end is fixed to the traveling wheel mounting seat 8 through the lower mounting seat 24. The overall lifting and lowering of the grinding trolley 200 is controlled by the grinding trolley lifting mechanism 6.

[0074] As shown in the appendix Figure 9 to the appendix Figure 12 As shown, the fire and dust prevention device 400 further includes a middle baffle 402, a cover plate 403, a door 405, a dust collecting curtain 407, an end baffle 410 and a fire curtain. The cover plate 403 is arranged on the left and right sides of the dust collecting curtain 407 along the working direction of the grinding trolley 200 (such as the direction shown by L in the appendix Figure 9 to the appendix Figure 11 ), and is installed on the frame 300 of the grinding trolley 200. One side of the dust collecting curtain 407 is connected to the bottom of the vehicle body of the grinding vehicle 100, and the opposite side is connected to the cover plate 403. The doors 405 are arranged on the left and right sides of the grinding trolley 200 along the working direction, and are connected to the cover plate 403 through hinges 404. The middle baffle 402 is suspended and connected below the frame 300, and the end baffle 410 is arranged at the front and rear ends of the grinding trolley 200 along the working direction, and is installed on the frame 300. Fire curtains are connected to the lower parts of the doors 405 and the end baffles 410. In the rail grinding trolley described in the specific embodiments of the present invention, the fire and dust prevention device 400 has functions of preventing grinding sparks from splashing and causing fire hazards, and facilitating the collection of grinding dust to reduce environmental pollution.

[0075] The top of the dust collecting curtain 407 is open, and is connected to the bottom of the vehicle body of the grinding vehicle 100 through a longitudinal beam 401, and is used to connect to a dust collecting channel and collect the dust generated during the grinding process into a dust collecting device through the dust collecting channel. As shown in the appendix Figure 3 As shown, the longitudinal beam 401 is arranged at the top of the dust collecting curtain 407 and is installed below the grinding vehicle 100. The longitudinal beam 401 further adopts a hollow beam structure with openings at the upper and lower ends. As shown in the appendix Figure 9As shown. An installation seat 409 is further provided on the end baffle 410, and a locking seat is provided at a position corresponding to the installation seat 409 on the vehicle door 405. When the vehicle door 405 is closed, the vehicle door 405 is locked by inserting a locking pin into the installation seat 409 and the locking seat. The vehicle door 405 and the cover plate 403 are connected by a hinge 404, so the vehicle door 405 can rotate about the hinge 404 in a fixed-axis manner. A handle 412 is provided on the vehicle door 405, so that the vehicle door 405 can be directly opened and closed through the handle 412, and a large-angle opening and closing of the vehicle door 405 can be realized. When the vehicle door 405 is closed, the vehicle door 405 is locked by using the locking pin. The fire and dust prevention device 400 further includes a vehicle door buffer mechanism 408. One end of the vehicle door buffer mechanism 408 is connected to the installation seat 409, and the other end is connected to the vehicle door 405. Through the vehicle door buffer mechanism 408, the large-angle opening and closing of the vehicle door 405 can be controlled to facilitate maintenance. The buffering effect of the vehicle door buffer mechanism 408 makes the opening and closing of the vehicle door 405 more stable. The vehicle door buffer mechanism 408 can specifically adopt structural forms such as oil cylinders, air cylinders, electric cylinders, and springs. During the working process of the grinding vehicle 100, when it is necessary to inspect, repair, and maintain the internal structure of the grinding trolley 200 such as the grinding unit 600, etc., after the vehicle door 405 is opened, there is no other structure blocking the side, so that the internal structure of the grinding trolley 200 can be directly operated, making the repair and maintenance of the grinding trolley 200 more convenient and fast.

[0076] The hinge 404 further includes a hinge installation seat, a hinge joint, and a rotating shaft. The hinge installation seat is arranged at the bottom side of the cover plate 403. One end of the hinge joint is fixed on the rotating shaft, and the other end is fixed on the top side of the vehicle door 405. When the vehicle door 405 is opened and closed, the hinge joint can rotate around the hinge installation seat, so as to realize the large-angle opening and closing of the vehicle door 405. In addition to the hinge connection method described in the specific embodiments of the present invention, the vehicle door 405 and the cover plate 403 can also realize large-angle opening and closing by adopting other movable connection methods.

[0077] The fireproof curtain further includes side fireproof curtains 406 and end fireproof curtains 411. The side fireproof curtains 406 are suspended below the vehicle door 405, and the end fireproof curtains 411 are suspended below the end baffle 410. The cover plate 403 at the top of the fireproof and dustproof device 400 is bolted to the left and right grinding unit mounting frames to achieve the overall coverage of the grinding cart 200, thereby ensuring the sealing performance of the grinding cart 200 and good dust collection effect. A partial sealing structure of the grinding cart 200 is formed by the cover plate 403, the vehicle door 405, the dust collection curtain 407, the end baffle 410, the side fireproof curtains 406 and the end fireproof curtains 411, so that the grinding dust generated during the operation can be collected into the dust collection device through the dust collection channel. In the specific embodiment of the present invention, the fireproof and dustproof device 400 makes the structure of the grinding cart 200 more sealed through the plate structures at the ends and sides, as well as the dust collection curtain 407 and the fireproof curtain. The grinding dust generated during the operation can be collected into the dust collection device through the dust collection channel, thereby reducing the harm to the operators, the pollution to the environment, and the damage to the equipment caused by the dust.

[0078] Small holes are provided at the corresponding positions of the fireproof curtain and the plate structures (including the vehicle door 405 and the end baffle 410) for assembly connection through pin-with-holes, and then a round pin and a split pin (not shown in the figure) are respectively inserted into the holes at both ends of the pin-with-hole to fix the fireproof curtain. The use of the pin structure makes the disassembly and assembly of the fireproof curtain very flexible and convenient. Therefore, when the fireproof curtain is replaced, the replacement time can be effectively saved, and the quick disassembly and assembly of the fireproof curtain can be realized. The side fireproof curtain 406 and the end fireproof curtain 411 made of flexible materials are respectively installed below the vehicle door 405 and the end baffle 410, which can adapt to different ballast heights and effectively prevent the sparks (high-temperature iron filings) generated during the grinding of the rail by the grinding wheel from splashing and injuring the facilities beside the rail or igniting the materials around the track and causing a fire.

[0079] The middle baffle 402 further includes several groups of independent unit baffles. Each group of unit baffles is connected into a whole through flexible connection and then suspended and installed on the frame 300 of the grinding cart 200 through a quick coupling ring to prevent the grinding sparks on one side from splashing to the grinding unit 600 on the other side, and at the same time avoid interference between the grinding unit 600 and the middle baffle 402 when the grinding unit 600 deflects. The middle baffle 402 is composed of multiple groups of independent small unit baffles. Each group of unit baffles is connected through a quick coupling ring and then suspended and installed on the frame 300 of the grinding cart 200. Its main function is to prevent the grinding sparks on one side from splashing to the grinding unit 600 on the other side. The suspension connection structure of multiple groups of unit baffles has a certain deflection. When the grinding units 600 on both sides of the grinding cart 200 deflect to a certain angle for grinding, it can effectively avoid interference between the grinding unit 600 and the middle baffle 402 during the deflection of the grinding unit 600 and further damage the grinding unit 600.

[0080] The end baffle 11 further includes two sets of two sub - baffles each, arranged horizontally. The upper part of the relatively larger sub - baffles is bolt - connected to the frame 300 of the grinding trolley 200, and the relatively smaller sub - baffles are bolt - connected to the frame 300.

[0081] The dust - collecting curtain 407 is further made of flexible material. The dust - collecting curtain 407 is connected to the longitudinal beam 401 through a ring pin. The ring pin includes a circular ring connected to the dust - collecting curtain 407, and an open - hole cylinder with one end connected to the circular ring and the other end connected to the longitudinal beam 401. Since the dust - collecting curtain 407 at the top of the fire and dust prevention device 400 is made of soft material, when the grinding trolley 200 is lifted or lowered, the dust - collecting curtain 407 can be flexibly folded, thus having no impact on the lifting function of the frame 300 of the grinding trolley 200.

[0082] The door 405 and the side fire - proof curtain 406 are further connected through a perforated pin and a ring pin. One end of the perforated pin is inserted into the mounting holes of the door 405 and the side fire - proof curtain 406, and the ring pin is inserted into the other end of the perforated pin with a through - hole. The other end of the perforated pin can be designed with threads and fixed connection between the door 405 and the side fire - proof curtain 406 is achieved through a fixing nut. The other end of the perforated pin can also be designed with a through - hole and fixed connection between the door 405 and the side fire - proof curtain 406 is achieved through inserting a split pin.

[0083] As a preferred specific embodiment of the present invention, the cover plate 403, the end baffle 410, the door 405, and the middle baffle 402 are all further made of aluminum material, effectively realizing the lightweight design of the fire and dust prevention device 400. In order to ensure that the structural stiffness meets the requirements of actual engineering applications, the longitudinal beam 401, the door 405 and other strengthened structures are all made of steel. The side fire - proof curtain 406 and the end fire - proof curtain 411 are further made of special fire - proof curtains made of high - chromium and high - silicon materials. Compared with traditional fire - proof cloth materials, such special fire - proof curtains have higher heat - resistant performance and longer service life.

[0084] A rail - relying device 700 is also provided between two adjacent grinding units 600 of the first grinding unit mounting frame 1 and / or the second grinding unit mounting frame 18, as shown in the attached Figure 8 figure. By calculating the relative change amount of the initial position and the moving position after relying on the rail of the rail - relying device 700, and combining with the initial position of the lateral translation mechanism 27 of the grinding unit 600, the lateral translation amount of the lateral translation mechanism 27 is obtained.

[0085] As shown in the attached Figure 13 to the attached Figure 16As shown in the figure, the rail-leaning device 700 further includes a mounting plate 701, a transverse movement guide post 702, a transverse movement guide sleeve 703, a second transverse movement mechanism 704, a vertical movement guide sleeve and guide post 705, a vertical movement mechanism 706, a rail-leaning wheel mounting seat 707, a rail-leaning wheel 708, a first elastic member 709 and a second elastic member 710. The two mounting plates 701 are arranged opposite to each other and fixed to the vehicle frame 300 of the grinding trolley 200. The transverse movement guide post 702 is connected between the two mounting plates 701. A transverse movement guide sleeve 703 is sleeved on the transverse movement guide post 702. One end of the second transverse movement mechanism 704 is connected to the mounting plate 701, and the other end is connected to the transverse movement guide sleeve 703. One end of the first elastic member 709 is connected to the mounting plate 701, and the other end is connected to the transverse movement guide sleeve 703. One end of the vertical movement guide sleeve and guide post 705 is connected to the transverse movement guide sleeve 703, and the other end extends downward and is connected to the rail-leaning wheel mounting seat 707. The rail-leaning wheel 708 is mounted on the rail-leaning wheel mounting seat 707. One end of the vertical movement mechanism 706 is connected to the transverse movement guide sleeve 703, and the other end is connected to the rail-leaning wheel mounting seat 707. The first elastic member 709 is connected between the mounting plate 701 and the transverse movement guide sleeve 703, and the second elastic member 710 is connected between the transverse movement guide sleeve 703 and the rail-leaning wheel mounting seat 707. When the acting force of the second transverse movement mechanism 704 is unloaded, the first elastic member 709 causes the transverse movement guide sleeve 703 to be subjected to a force pointing in the direction of the rail-leaning of the rail-leaning wheel 25 (such as the direction shown by F in the attached Figure 14 and attached Figure 15 figure), realizing the pressing of the rail-leaning wheel 25 against the side surface of the rail 30. One end of the vertical movement guide sleeve and guide post 705 is connected to the transverse movement guide sleeve 703, and the other end extends downward and is connected to the rail-leaning wheel mounting seat 707. The rail-leaning wheel 25 is mounted on the rail-leaning wheel mounting seat 707. One end of the vertical movement mechanism 706 is connected to the transverse movement guide sleeve 703, and the other end is connected to the rail-leaning wheel mounting seat 707.

[0086] The second elastic member 710 is connected between the transverse movement guide sleeve 703 and the rail-leaning wheel mounting seat 707, and the vertical movement mechanism 706 provides a vertical downward pressure for the rail-leaning wheel 25. When rail-leaning is not required, the second elastic member 710 is tightened and pulls the rail-leaning wheel 25 away from the top surface of the rail 30. A total of four sets of rail-leaning devices 700 are installed on the grinding trolley 200, and are respectively installed on the vehicle frames 300 on the left and right sides of the grinding trolley 200. Before lowering and lifting the rail-leaning device 700, the second transverse movement mechanism 704 extends out to displace the rail-leaning wheel 25 from the rail 30. After lowering, the rail-leaning device 700 is tightened by the first (horizontal) spring 709 and provides a side-pressing rail-leaning force. When pressing down, the vertical movement mechanism 706 provides a vertical downward pressure. When rail-leaning is not required, the second (vertical) spring 710 is tightened and pulls the rail-leaning wheel 25 away from the top surface of the rail 30. As a typical embodiment of the present invention, the first elastic member 9 and the second elastic member 10 can specifically be springs.

[0087] The rail-leaning device 700 further includes two along the horizontal direction (such as in the attachedFigure 13 The two lateral guide posts 702 are arranged parallel to each other between the two mounting plates 701 (in the direction indicated by X in the figure), and the first elastic component 709 is arranged between the two lateral guide posts 702. The two lateral guide sleeves 703 are respectively sleeved on the outside of the two lateral guide posts 702, and the two lateral guide sleeves 703 are connected to each other through the first connecting plate 713.

[0088] A second connecting plate 714 is also vertically connected between the two transverse guide sleeves 703, and the second connecting plate 714 is vertically arranged on the surface of the first connecting plate 713. One end of the second transverse mechanism 704 is connected to the mounting plate 701, and the other end is connected to the first connecting plate 713. One end of the first elastic component 709 is connected to the mounting plate 701, and the other end is connected to the second connecting plate 714. The second transverse mechanism 704 is arranged between the two transverse guide pillars 702, and the first elastic component 709 is arranged between the two transverse guide pillars 702. The second transverse mechanism 704 and the first elastic component 709 are arranged on different sides of the first connecting plate 713, respectively.

[0089] One end of the vertical guide sleeve guide column 705 is a vertical guide column 715, and the other end is a vertical guide sleeve 716 sleeved on the vertical guide column 715. In this embodiment, the lower end of the vertical guide column 715 is connected to the rail wheel mounting seat 707, and the upper end of the vertical guide sleeve 716 is connected to the transverse guide sleeve 703. Alternatively, the upper end of the vertical guide column 715 is connected to the transverse guide sleeve 703, and the lower end of the vertical guide sleeve 716 is connected to the rail wheel mounting seat 707. The transverse guide sleeve 703 is driven by the transverse mechanism 704 to move on the transverse guide column 702, and the vertical guide column 715 is driven by the vertical mechanism 706 to move in the vertical guide sleeve 716.

[0090] The rail support device 700 includes two vertical directions (such as the attached Figure 13 The vertical guide sleeve guide column 705 is arranged parallel to each other between the lateral guide sleeve 703 and the rail wheel mounting seat 707 (in the direction shown by Y in the figure). One end of the vertical guide sleeve guide column 705 is connected to the bottom of the lateral guide sleeve 703, and the vertical movement mechanism 706 is arranged between the two vertical guide sleeve guide columns 705. Dust baffles 711 are arranged on both sides perpendicular to the arrangement direction of the two vertical guide sleeve guide columns 705, and a partition 712 is also arranged between the two dust baffles 711. The vertical guide sleeve guide column 705 and the vertical movement mechanism 706 pass through the partition 712. As a typical embodiment of the present invention, when the vertical guide sleeve guide column 705 specifically adopts a guide column and a guide sleeve combination structure, the vertical guide sleeve guide column 705 includes a vertical guide column and a vertical guide sleeve sleeved on the outside of the vertical guide column, and the partition 712 is fixed to the vertical guide sleeve as a whole to fix the relative position of the vertical guide column.

[0091] The grinding carriage 200 is provided with four rail-supporting devices 700, two of which are provided on each side of the frame 300 for mounting the grinding units.Figure 8 As shown. As attached Figure 5 As shown, the grinding trolley 200 includes a total of 8 grinding units 600 arranged in two columns along the operation direction. Each column includes 4 grinding units 600, which are divided into an odd side and an even side according to the serial numbers from 1 to 8. For the grinding units 600 on the odd side, the rail-leaning devices 700 are respectively installed between the 1st and 3rd grinding units 600, and between the 5th and 7th grinding units 600, that is, one set of rail-leaning device 700 is responsible for the lateral movement control of adjacent two grinding units 600. The 5th grinding unit 600 does not work during turnout grinding. The arrangement of the grinding units 600 on the even side is the same (the rail-leaning devices 700 are respectively installed between the 2nd and 4th grinding units 600, and between the 6th and 8th grinding units 600). It is also possible to set one rail-leaning device 700 for each grinding unit 600 on one side, and each rail-leaning device 700 outputs rail-leaning data to the grinding unit 600, so as to realize the precise lateral movement of the grinding unit 600. In the solution of this embodiment, considering that the rail-leaning device 700 will increase the weight and length of the grinding trolley 200, a structure with 2 rail-leaning devices 700 on one side is adopted.

[0092] When performing main line grinding of the railway, the rail-leaning device 700 is in a locked state and does not lower to participate in the grinding operation. When performing turnout area grinding, the rail-leaning device 700 lowers to participate in the grinding operation. When grinding the turnout, the grinding vehicle runs outside the grinding section, and presses the button to lower the grinding trolley 200. Three actions need to be realized: the locking cylinder of the locking device 500 (it is also possible to use an oil cylinder, an electric cylinder, etc. to replace) acts, and the locking air hook retracts; the grinding trolley 200 is lowered by releasing the lifting device 900; the lateral movement mechanism II 704 and the vertical movement mechanism 706 of the rail-leaning device 700 act, so that the rail-leaning wheel 25 is tightly attached to the rail 30.

[0093] An embodiment of the operation method of the above-mentioned rail-leaning device 700, the method specifically includes the following steps:

[0094] S11) The lateral movement mechanism II 704 of the rail-leaning device 700 extends, so that the flange surface of the rail-leaning wheel 25 moves towards the middle position between the two rails 30 to stagger the flange surface of the rail-leaning wheel 25 and the side surface of the rail 30;

[0095] S12) The vertical movement mechanism 706 of the rail-leaning device 700 works, the vertical movement mechanism 706 extends, and the rail-leaning wheel 25 is pressed down to the top surface of the rail 30 by controlling the working pressure of the vertical movement mechanism 706;

[0096] S13) Release the acting force of the lateral movement mechanism II 704, so that the lateral movement mechanism II 704 floats and realizes the pressing against the side surface of the rail 30 by relying on the tension force of the first elastic member 709, and feedback the position state of the lateral movement mechanism II 704 (a displacement sensor is installed on the lateral movement mechanism II 704);

[0097] S14) By calculating the relative change in the initial position and the moved position after leaning against the rail of the second transverse movement mechanism 704, and combining with the initial position of the first transverse movement mechanism 27 of the grinding unit 600, the transverse movement amount of the first transverse movement mechanism 27 is obtained, so as to realize the automatic setting of the transverse movement amount of the second transverse movement mechanism 704 of the grinding unit 600.

[0098] When performing turnout area grinding, the transverse movement amount of the grinding unit 600 is adjusted in real time according to the output amount of the rail-leaning device 700. The initial length of the second transverse movement mechanism 704 is L0, and the length of the second transverse movement mechanism 704 after leaning against the rail is L1, then the change amount is L1 - L0. The initial transverse movement amount of the first transverse movement mechanism 27 of the grinding unit 600 is S0. When the length change of the second transverse movement mechanism 704 is L1 - L0, the transverse movement amount of the first transverse movement mechanism 27 of the grinding unit 600 is adjusted to S0+(L1 - L0). When performing turnout grinding, the transverse movement amount of the grinding unit 600 is adjusted in real time according to the length change amount of the second transverse movement mechanism 704 of the rail-leaning device 700.

[0099] Before the rail-leaning device 700 is lowered or lifted, the second transverse movement mechanism 704 extends out to displace the rail-leaning wheel 25 from the rail 30. After the rail-leaning device 700 is lowered, the first elastic member 709 is tightened to provide a side pressure rail-leaning force, and the vertical movement mechanism 706 provides a vertical downward pressure. When the rail-leaning device 700 does not need to perform the rail-leaning operation, the second elastic member 710 is tightened to pull the rail-leaning wheel 25 away from the rail surface of the rail 30.

[0100] The grinding trolley 200 is locked to the lower part of the vehicle body of the rail grinding vehicle through the locking device 500. Before step S10), the following steps are further included:

[0101] When the grinding trolley 200 is in the unlocked state (the locking air hook position sensor of the grinding trolley 200 feeds back the unlocked state signal of the grinding trolley 200), when the signal is obtained, the lifting oil cylinder of the grinding trolley 200 extends out, and the grinding trolley 200 descends by its own weight until the running wheel 9 contacts the rail surface of the rail 30. When the running wheel 9 of the grinding trolley 200 drops to the rail surface of the rail 30, the grinding unit 600 performs a simulated test grinding (that is, performs actions such as the downward pressure, transverse movement, and deflection of each grinding head, but does not perform grinding to test whether the grinding unit 600 works normally), and starts to prepare for turnout grinding.

[0102] In this embodiment, the lifting mechanism 6 of the grinding trolley, the wheelbase adjustment mechanism 12, the lifting mechanism 15 of the grinding device, the first transverse movement mechanism 27, the second transverse movement mechanism 704, the vertical movement mechanism 706, etc. can specifically adopt forms such as oil cylinders, air cylinders, and electric cylinders. The combination structure of the guide sleeve and guide column of the towing rod 5 and the towing rod guide sleeve 7, the wheelbase adjustment guide column 10 and the wheelbase adjustment guide sleeve 11, the grinding device lifting guide column 14 and the grinding device lifting guide sleeve 19, the transverse movement guide column 702 and the transverse movement guide sleeve 703, the vertical movement guide sleeve guide column 705, and the vertical movement guide column 715 and the vertical movement guide sleeve 716 can also adopt alternative structures such as the combination of a guide rail and a slider, and the combination of a gear and a rack to achieve the function of a moving pair.

[0103] By implementing the technical solution of the rail grinding trolley described in the specific embodiments of the present invention, the following technical effects can be achieved:

[0104] (1) For the rail grinding trolley described in the specific embodiments of the present invention, the traction device uses a vertical towing rod, and one is arranged at each of the front and rear ends of a single grinding trolley. The vertical towing rod avoids the load reduction effect of the traditional inclined towing rod on the grinding trolley, and can better realize the compact design of the overall structure size of the grinding trolley. At the same time, an independently liftable installation frame for the grinding unit is adopted;

[0105] (2) For the rail grinding trolley described in the specific embodiments of the present invention, an independently symmetric installation frame structure is adopted on both the left and right sides, and a lifting mechanism for the grinding device is provided, which can realize the independent lifting of the left and right frames relative to the grinding trolley, so that the grinding states of the two frames do not affect each other. When the grinding head on one side of the track needs to avoid obstacles and lift during the operation, only the corresponding frame needs to be lifted, avoiding the frequent lifting and lowering of the entire grinding trolley during the operation and affecting the grinding efficiency;

[0106] (3) For the rail grinding trolley described in the specific embodiments of the present invention, the installation seat spacing of the grinding unit on the left and right side frames is designed to be adjustable. By adjusting the installation distance between the grinding units, rail grinding vehicles with different numbers of grinding heads can be obtained to meet the diverse needs of customers;

[0107] (4) For the rail grinding trolley described in the specific embodiments of the present invention, the frame adopts an independently symmetric frame structure, and the installation frame of the grinding unit is located at the top of the trolley. The spaces in the middle and lower parts of the trolley are both open structures and adopt a modular structure. When problems occur in a single side frame or grinding unit, specific modules can be disassembled and maintained targeted, which can be disassembled, installed, and repaired more conveniently, significantly reducing the maintenance cost and providing great convenience for the subsequent maintenance of the grinding trolley and the grinding unit.

[0108] (5) The rail grinding trolley described in the specific embodiments of the present invention can accurately position the relative positional relationship between the grinding wheel and the rail by means of the rail-leaning device, greatly improving the grinding effect; it can grind many areas of the railway line including turnouts, with a wide application range and strong adaptability; it can make full use of the internal space of the grinding trolley, and the operation process is simple, effectively avoiding the interference between the flange surface of the rail-leaning wheel and the side surface of the rail during the rail-leaning process.

[0109] (6) The rail grinding trolley described in the specific embodiments of the present invention has an optimized fire and dust prevention device structure. The side door adopts a movable connection method, which can realize the large-angle opening and closing of the door. When it is necessary to repair and maintain the internal structure of the grinding trolley, there are no other baffles on the side after the door is directly opened, so that the internal structure of the grinding trolley can be directly operated, making the subsequent repair and maintenance work of the grinding trolley more convenient and fast, and significantly reducing the maintenance cost.

[0110] (7) The grinding unit in the rail grinding trolley described in the specific embodiments of the present invention has a transverse movement function, which can meet the grinding requirements of various lines such as main lines and turnouts, and can effectively improve the rail grinding quality while covering a wide range of grinding angles.

[0111] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0112] The above is only a preferred embodiment of the present invention, and it is not intended to limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still fall within the scope of the protection of the technical solution of the present invention.

Claims

1. A rail grinding trolley is installed at the lower part of a grinding vehicle (100), characterized in that, The grinding trolley (200) includes: a vehicle frame (300), a fire and dust prevention device (400), a locking device (500), a grinding unit (600), a traction device (800) and a lifting device (900); the vehicle frame (300) includes a middle beam (3), and grinding unit mounting frames which are symmetrically arranged on the left and right sides of the middle beam (3) along the working direction of the grinding trolley (200) and can be independently lifted; the traction device (800) adopts a vertical traction structure and is arranged at the front and rear ends along the working direction of the grinding trolley (200), the traction device (800) is installed at the bottom of the grinding vehicle (100) and is connected to the middle beam (3); the fire and dust prevention device (400) is installed on the vehicle frame (300), the grinding unit (600) is installed on the grinding unit mounting frame and is arranged inside the fire and dust prevention device (400); one end of the lifting device (900) is connected to the bottom of the grinding vehicle (100), and the other end is connected to the vehicle frame (300), the grinding trolley (200) can be fixed to the bottom of the grinding vehicle (100) through the locking device (500); the vehicle frame (300) further includes a running wheel mounting seat (8), running wheels (9), wheelbase adjusting guide columns (10), wheelbase adjusting guide sleeves (11) and a wheelbase adjusting mechanism (12); two wheelbase adjusting guide columns (10) are respectively fixedly connected to the front and rear ends of the middle beam (3) along the working direction of the grinding trolley (200), and wheelbase adjusting guide sleeves (11) are sleeved on both ends of the wheelbase adjusting guide columns (10) along the length direction; one end of the wheelbase adjusting mechanism (12) is connected to a connecting seat (20) on the middle beam (3), and the other end is connected to the wheelbase adjusting guide sleeve (11), the running wheels (9) are installed below the wheelbase adjusting guide sleeve (11) through the running wheel mounting seat (8); by the telescopic movement of the wheelbase adjusting mechanism (12), the wheelbase adjusting guide sleeve (11) is driven to move horizontally on the wheelbase adjusting guide column (10), and further drives the running wheels (9) connected to the wheelbase adjusting guide sleeve (11) to move horizontally, so as to realize the wheelbase adjustment of the running wheels (9).

2. The rail grinding trolley according to claim 1, characterized in that: The frame (300) further includes a grinding device lifting guide post (14) and a grinding device lifting guide sleeve (19) sleeved outside the grinding device lifting guide post (14); the upper part of the grinding device lifting guide post (14) is connected to the end of the grinding unit mounting frame along the working direction of the grinding trolley (200), and the grinding device lifting guide sleeve (19) is fixedly connected to the wheel gauge adjusting guide sleeve (11) at the same end; the frame (300) further includes a grinding device lifting mechanism (15), one ends of two grinding device lifting mechanisms (15) are respectively connected to the front and rear ends of the grinding unit mounting frame along the working direction of the grinding trolley (200), and the other ends are connected to the wheel gauge adjusting guide sleeve (11) on the same side; paired grinding device lifting guide posts (14) are arranged at the front and rear ends of the grinding unit mounting frame along the working direction of the grinding trolley (200), and the grinding device lifting mechanism (15) is arranged between two grinding device lifting guide posts (14); when the grinding device lifting mechanism (15) moves telescopically, it drives the grinding device lifting guide post (14) to move up and down relative to the grinding device lifting guide sleeve (19), so as to realize the lifting movement of the grinding unit mounting frame relative to the middle beam (3).

3. The rail grinding trolley according to claim 2, wherein: The frame (300) further includes a guide sleeve connecting part (13), two guide sleeve connecting parts (13) are respectively arranged at the front and rear ends of the grinding unit mounting frame along the working direction of the grinding trolley (200), and are connected between two grinding device lifting guide sleeves (19) at the same end; the wheel gauge adjusting guide post (10) is fixedly connected to the middle beam (3) through a connecting seat (20), and paired wheel gauge adjusting mechanisms (12) are arranged at the front and rear ends of the frame (300) along the working direction of the grinding trolley (200); one end of the wheel gauge adjusting mechanism (12) is connected to the connecting seat (20), and the other end is connected to the wheel gauge adjusting guide sleeve (11) on the same side.

4. The rail grinding trolley according to claim 3, characterized in that: The grinding unit mounting frame includes a first grinding unit mounting frame (1) and a second grinding unit mounting frame (18); the first grinding unit mounting frame (1) and the second grinding unit mounting frame (18) can be lifted independently of each other, so that when the grinding trolley (200) encounters a unilateral obstacle during operation, the corresponding grinding unit mounting frame can be lifted separately; grinding unit mounting seats (21) are welded on the first grinding unit mounting frame (1) and the second grinding unit mounting frame (18), and the grinding unit (600) is fixedly connected to the grinding unit mounting seat (21) through bolt connection, and the installation quantity of the grinding unit (600) is changed by adjusting the relative positions of the grinding unit mounting seats (21).

5. The rail grinding trolley according to claim 4, wherein: A rail-leaning device (700) is further arranged between two adjacent grinding units (600) of the first grinding unit mounting frame (1) and / or the second grinding unit mounting frame (18); by calculating the relative change amount between the initial position of the rail-leaning device (700) and the moving position after rail-leaning, and combining with the initial position of the first transverse movement mechanism (27) of the grinding unit (600), the transverse movement amount of the first transverse movement mechanism (27) is obtained.

6. The rail grinding trolley according to claim 5, wherein: The rail-leaning device (700) includes a mounting plate (701), a transverse movement guide post (702), a transverse movement guide sleeve (703), a second transverse movement mechanism (704), a vertical movement guide sleeve and guide post (705), a vertical movement mechanism (706), a rail-leaning wheel mounting seat (707), a rail-leaning wheel (708), a first elastic member (709) and a second elastic member (710); two mounting plates (701) are arranged opposite to each other and fixed on the vehicle frame (300) of the grinding cart (200), and the transverse movement guide post (702) is connected between the two mounting plates (701); a transverse movement guide sleeve (703) is sleeved on the transverse movement guide post (702), one end of the second transverse movement mechanism (704) is connected to the mounting plate (701), and the other end is connected to the transverse movement guide sleeve (703); one end of the first elastic member (709) is connected to the mounting plate (701), and the other end is connected to the transverse movement guide sleeve (703); one end of the vertical movement guide sleeve and guide post (705) is connected to the transverse movement guide sleeve (703), and the other end extends downward and is connected to the rail-leaning wheel mounting seat (707), and the rail-leaning wheel (708) is mounted on the rail-leaning wheel mounting seat (707); one end of the vertical movement mechanism (706) is connected to the transverse movement guide sleeve (703), and the other end is connected to the rail-leaning wheel mounting seat (707); the first elastic member (709) is connected between the mounting plate (701) and the transverse movement guide sleeve (703), and the second elastic member (710) is connected between the transverse movement guide sleeve (703) and the rail-leaning wheel mounting seat (707); when the acting force of the second transverse movement mechanism (704) is unloaded, the first elastic member (709) enables the transverse movement guide sleeve (703) to receive an acting force pointing in the rail-leaning direction of the rail-leaning wheel (708), so as to realize the pressing of the rail-leaning wheel (708) against the side surface of the rail (30).

7. The rail grinding trolley according to any one of claims 1 to 6, characterized in that: The traction device (800) includes a traction rod mounting seat (4), a traction rod (5) and a traction rod guide sleeve (7); the traction rod mounting seat (4) is fixed at the bottom of the grinding vehicle (100), the top end of the traction rod (5) is connected to the traction rod mounting seat (4), the traction rod guide sleeve (7) is sleeved on the traction rod (5), and the traction rod guide sleeve (7) is connected to the middle beam (3) through a traction connecting plate (22); the traction force of the grinding vehicle (100) is transmitted to the vehicle frame (300) through the traction rod mounting seat (4), the traction rod (5), the traction rod guide sleeve (7) and the traction connecting plate (22), thereby driving the grinding cart (200) to perform operations.

8. The rail grinding trolley according to claim 7, characterized in that: The lifting device (900) includes a grinding trolley lifting mechanism (6), an upper mounting seat (23), and a lower mounting seat (24); one end of the grinding trolley lifting mechanism (6) is fixed to the bottom of the grinding vehicle (100) through the upper mounting seat (23), and the other end is fixed to the traveling wheel mounting seat (8) through the lower mounting seat (24); the overall lifting and lowering of the grinding trolley (200) is controlled by the grinding trolley lifting mechanism (6).

9. The rail grinding trolley according to claim 1, 2, 3, 4, 5, 6 or 8, characterized in that: The fire and dust prevention device (400) includes a middle baffle (402), a cover plate (403), a door (405), a dust collection curtain (407), an end baffle (410), and a fire curtain; the cover plate (403) is arranged on the left and right sides of the dust collection curtain (407) along the working direction of the grinding trolley (200), and is installed on the frame (300) of the grinding trolley (200); one side of the dust collection curtain (407) is connected to the bottom of the vehicle body of the grinding vehicle (100), and the opposite side is connected to the cover plate (403); the door (405) is arranged on the left and right sides of the grinding trolley (200) along the working direction, and is connected to the cover plate (403) through a hinge (404); the middle baffle (402) is suspended and connected below the frame (300), the end baffle (410) is arranged at the front and rear ends of the grinding trolley (200) along the working direction, and is installed on the frame (300); fire curtains are connected to the lower parts of the door (405) and the end baffle (410).

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