Railway ballast screening vehicle

Abstract

The utility model provides a railway ballast screening vehicle which comprises a vehicle body, a chassis is arranged at the bottom of the vehicle body, steel rail walking mechanisms are arranged at the two ends of the chassis, and a cab and an operation arm are arranged at the top of the vehicle body. And the supporting assembly is arranged at the top of the vehicle body. According to the railway ballast screening vehicle, the vehicle body, the crawler walking mechanism, the steel rail walking mechanism, the operation arm, the screening assembly and the conveying assembly are matched with one another, when the railway ballast screening vehicle is used, the railway ballast screening vehicle can independently go up and down rails, adapt to various line environments and complete the operation procedures of ballast digging, screening, conveying and the like; therefore, the stone ballast screening efficiency is improved, the labor intensity of workers is reduced, the vibrator drives the screen to conduct high-strength vibration, the railway ballast screening effect can be improved, and waste of the stone ballast is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of railway maintenance engineering machinery, in particular to a railway ballast screening vehicle. Background Art

[0002] Ballast is coarse gravel or crushed stone used to lay railway subgrades, primarily for railway subgrades. The gaps between the ballast allow rainwater to drain more quickly, and the presence of ballast also facilitates the adjustment and maintenance of rail gauge and the smoothness of the line. During vehicle operation, ballast can reduce the vibration and noise it causes. After long-term use, railway lines can become dirty and broken, and the track can become compacted, slurry, and mud, which have a significant impact on the line's condition and performance. Railway departments regularly screen the track every year. This screening process removes the ballast from the trackbed and places it in a screening device to separate it from dirt and waste ballast. Clean ballast that meets specifications is then backfilled into the trackbed, while dirt and waste ballast are removed from the track.

[0003] At present, large-scale road maintenance machinery, such as ballast cleaning machines, are mainly used for cleaning and screening operations. However, their scope of application is limited by factors such as the line environment and economic efficiency. As a result, in daily line maintenance operations such as cleaning small sections, switches, and stations, manual operation with small tools is generally adopted.

[0004] However, the manual operation mode of configuring small tools has the problems of low efficiency and high labor intensity. At the same time, the screening effect is not ideal. Therefore, the method of replacing new ballast and discarding all old ballast is often adopted, which wastes ballast resources to a certain extent.

[0005] Therefore, it is necessary to provide a railway ballast screening vehicle to solve the above-mentioned technical problems. Utility Model Content

[0006] The utility model provides a railway ballast screening vehicle, which solves the problems of low efficiency, high labor intensity, poor screening effect, need to replace new ballast and discard old ballast, and waste of ballast resources in manual operation with small tools.

[0007] In order to solve the above technical problems, the present invention provides a railway ballast screening vehicle, comprising:

[0008] A vehicle body, wherein a chassis is provided at the bottom of the vehicle body, rail running mechanisms are provided at both ends of the chassis, and a cab and an operating arm are provided at the top of the vehicle body;

[0009] A support assembly, the support assembly being arranged on the top of the vehicle body;

[0010] 4. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The through-hole, the screw bolts comprise a through-hole, a screwdriver, and a nut. The through-holes are connected via a through-hole, and the two foot pieces comprise a through-hole, a screw bolt and a nut.

[0011] The conveying assembly is arranged at the bottom of the screening assembly, and the conveying assembly includes a first conveying frame, a folding telescopic rod, a support frame, a driving member, a conveyor belt, a tensioning assembly, a rotating shaft and a second conveying frame, the support frame is fixedly installed at the bottom of the screen frame, the first conveying frame is fixedly installed on the top of the support frame, the second conveying frame is rotatably connected to one end of the first conveying frame, one end of the folding telescopic rod is rotatably connected to one end on both sides of the first conveying frame, and the other end of the folding telescopic rod is rotatably connected to the side of the second conveying frame, the tensioning assembly is fixedly installed on both sides of one end of the second conveying frame, the rotating shaft is rotatably connected to the inside of the tensioning assembly and the other end of the inner side surface of the first conveying frame, the driving member is fixedly installed on one side of the other end of the first conveying frame, and the conveying end of the driving member is fixedly installed on one end of one of the rotating shafts, and the conveying is respectively sleeved on the outer side surfaces of the two rotating shafts.

[0012] Preferably, the working arm is arranged on the side of the cab, and a crawler walking mechanism is provided at the bottom of the chassis.

[0013] Preferably, the support assembly includes a frame, a spring isolation seat, a mounting seat and a crossbeam. The frame is fixedly mounted on the top of the vehicle body, the spring isolation seats are fixedly mounted on the four sides of the top of the frame, the mounting seat is fixedly mounted on the top of the spring isolation seat, and both ends of the crossbeam are arranged inside the mounting seat.

[0014] Preferably, the crossbeam is fixedly mounted inside the screen frame, and the crossbeam is arranged at the bottom of the screen.

[0015] Preferably, both sides of the screen frame are rotatably connected with connecting rods, and one end of the connecting rods is fixedly mounted with a material receiving plate.

[0016] Preferably, the bottom of the material guide frame is arranged on the top of the conveyor belt.

[0017] Preferably, support plates are fixedly installed on both ends of the outer side of the beam, a top plate is fixedly installed on the top of the support plate, fixing screws are threadedly connected inside both ends of the top plate, and a clamping plate is provided on the outer side of the fixing screw.

[0018] Preferably, the top of the top plate is attached to the bottom of the screen, and the clamping plate is arranged on the top of the screen.

[0019] Preferably, a rotating seat is fixedly installed at the bottom of the screen frame, and a material guide plate is rotatably connected inside the rotating seat. Slide grooves are provided on both sides of the material guide plate. The inner side of the slide groove is slidably connected to a slide rod, and the outer side of the slide rod is rotatably connected to a pneumatic telescopic rod.

[0020] Preferably, a fixing block is fixedly mounted on the outer side surface of the pneumatic telescopic rod, and the fixing block is fixedly mounted on the side surface of the screen frame.

[0021] Compared with the related art, the railway ballast screening vehicle provided by the present invention has the following beneficial effects:

[0022] The utility model provides a railway ballast screening vehicle, which cooperates with each other through the vehicle body, crawler walking mechanism, rail running mechanism, working arm, screening component and conveying component. When in use, the vehicle can independently go up and down the rails, adapt to various line environments, and complete the operation processes such as ballast excavation, screening and conveying. Manual labor is only used for assistance, thereby increasing the efficiency of ballast screening and reducing the labor intensity of manual labor. In addition, the vibrator drives the screen to vibrate with high intensity, which can increase the effect of ballast screening and reduce ballast waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic structural diagram of a first embodiment of a railway ballast screening vehicle provided by the utility model;

[0024] Figure 2 for Figure 1 Schematic diagram of working status shown;

[0025] Figure 3 for Figure 2 Another perspective structural diagram shown;

[0026] Figure 4 for Figure 1 The side structure diagram shown;

[0027] Figure 5 for Figure 1 The schematic diagram of the screening component and the conveying component shown;

[0028] Figure 6 for Figure 5 The side structure diagram of the screening assembly shown;

[0029] Figure 7 for Figure 5 The enlarged structural diagram of part A is shown;

[0030] Figure 8 for Figure 5 The enlarged structural diagram of part B is shown;

[0031] Figure 9 This is a structural schematic diagram of a second embodiment of a railway ballast screening vehicle provided by the utility model;

[0032] Figure 10 This is a structural schematic diagram of a third embodiment of a railway ballast screening vehicle provided by the utility model.

[0033] Numbers in the figure: 1, vehicle body; 11, cab; 12, chassis; 13, crawler track mechanism; 14, rail running mechanism; 15, working arm;

[0034] 2. Screening assembly; 21. Frame assembly; 211. Screen frame; 212. Material guide frame; 213. Vibrator; 22. Mounting assembly; 221. Mounting bar; 222. Curved bar; 223. Mounting screws; 224. Connecting bolts; 23. Screen;

[0035] 3. Material collecting plate; 31. Connecting rod;

[0036] 4. Conveyor assembly; 41. First conveyor frame; 42. Folding telescopic rod; 43. Support frame; 44. Driving member; 45. Conveyor belt; 47. Tensioning assembly; 48. Rotating shaft; 49. Second conveyor frame;

[0037] 5. Support assembly; 51. Frame; 52. Spring isolation seat; 53. Mounting seat; 54. Crossbeam;

[0038] 6. Support plate; 61. Top plate; 62. Clamping plate; 63. Fixing screws;

[0039] 7. Rotating seat; 71. Guide plate; 72. Slide chute; 73. Pneumatic telescopic rod; 74. Slide rod; 75. Fixed block. DETAILED DESCRIPTION

[0040] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0041] First embodiment

[0042] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 ,in, Figure 1 A schematic structural diagram of a first embodiment of a railway ballast screening vehicle provided by the utility model; Figure 2 for Figure 1 Schematic diagram of working status shown; Figure 3 for Figure 2 Another perspective structural diagram shown; Figure 4 for Figure 1 The side structure diagram shown; Figure 5 for Figure 1 The schematic diagram of the screening component and the conveying component shown; Figure 6 for Figure 5 The side structure diagram of the screening assembly shown; Figure 7 for Figure 5 The enlarged structural diagram of part A is shown; Figure 8 for Figure 5 A railway ballast screening vehicle comprises a vehicle body 1, a chassis 12 disposed at the bottom of the vehicle body 1, rail running mechanisms 14 disposed at both ends of the chassis 12, a cab 11 and an operating arm 15 disposed at the top of the vehicle body 1;

[0043] A support assembly 5, the support assembly 5 is arranged on the top of the vehicle body 1;

[0044] The screening component 2 is arranged on the top of the support component 5. The screening component 2 includes a frame component 21, two mounting components 22 and a screen 23. The frame component 21 is arranged on the top of the support component 5. The two mounting components 22 are fixedly mounted on both sides of the inner side of the frame component 21. The screen 23 is arranged in the middle of the two frame components 21. The frame component 21 includes a screen frame 211, a guide frame 212 and a vibrator 213. The guide frame 212 is fixedly mounted on the bottom of the guide frame 212. The vibrator 213 is fixedly mounted on the bottom of the screen frame 211. The two mounting assemblies 22 each include a mounting bar 221, an arcuate bar 222, a mounting screw 223, and a connecting bolt 224. The mounting bars 221 are respectively arranged on both sides of the inner side of the screen frame 211. The arcuate bar 222 is clamped to the bottom of the mounting bar 221. The mounting screw 223 is arranged inside the arcuate bar 222. The connecting bolt 224 is arranged inside the screen frame 211, and one end of the connecting bolt 224 is threadedly connected to the inside of the mounting bar 221.

[0045] The conveying assembly 4 is arranged at the bottom of the screening assembly 2, and the conveying assembly 4 includes a first conveying frame 41, a folding telescopic rod 42, a support frame 43, a driving member 44, a conveyor belt 45, a tensioning assembly 47, a rotating shaft 48 and a second conveying frame 49. The support frame 43 is fixedly mounted on the bottom of the screen frame 211, the first conveying frame 41 is fixedly mounted on the top of the support frame 43, the second conveying frame 49 is rotatably connected to one end of the first conveying frame 41, and one end of the folding telescopic rod 42 is rotatably connected to the first conveying frame 4 1, the other end of the folding telescopic rod 42 is rotatably connected to the side of the second conveying frame 49, the tensioning components 47 are respectively fixedly installed on both sides of one end of the second conveying frame 49, the rotating shaft 48 is respectively rotatably connected to the inside of the tensioning component 47 and the other end of the inner side of the first conveying frame 41, the driving member 44 is fixedly installed on one side of the other end of the first conveying frame 41, and the conveying end of the driving member 44 is fixedly installed on one end of the rotating shaft 48, and the conveying links 45 are respectively sleeved on the outer sides of the two rotating shafts 48.

[0046] The working arm 15 is provided on the side of the cab 11 , and a crawler walking mechanism 13 is provided at the bottom of the chassis 12 .

[0047] The support assembly 5 includes a frame 51, a spring isolation seat 52, a mounting seat 53 and a crossbeam 54. The frame 51 is fixedly installed on the top of the vehicle body 1, the spring isolation seat 52 is fixedly installed on the four sides of the top of the frame 51, the mounting seat 53 is fixedly installed on the top of the spring isolation seat 52, and both ends of the crossbeam 54 are arranged inside the mounting seat 53.

[0048] The crossbeam 54 is fixedly installed inside the screen frame 211 , and the crossbeam 54 is disposed at the bottom of the screen 23 .

[0049] Both sides of the screen frame 211 are rotatably connected with connecting rods 31 , and one end of the connecting rod 31 is fixedly mounted with a material receiving plate 3 .

[0050] The bottom of the material guiding frame 212 is disposed on the top of the conveyor belt 45 .

[0051] The vehicle body 1 and the working device are respectively assembled at the front and rear ends of the chassis 12. By manipulating the vehicle body 1 (or other equipment to load materials) to the working device, the working device performs vibration screening and waste conveying functions, separating dirt and broken ballast from the old ballast, leaving clean ballast that meets specifications to be backfilled into the roadbed, and the waste is conveyed to a designated point for collection;

[0052] The vehicle body 1 integrates the power system, hydraulic system, cooling system, driver's cab 11 and working arm 15, and can rotate 360 degrees. The vehicle body 1 controls the movement of the entire vehicle and provides the power source. At the same time, its working arm 15 can be equipped with different working attachments to complete various line maintenance operations.

[0053] The chassis 12 carries the vehicle body 1 and the operating device, and can run on general roads or on rails. It integrates a crawler running mechanism 13 and a rail running mechanism 14. The crawler running mechanism 13 is assembled on both sides of the chassis 12. The rail running mechanism 14 has a driving wheel pair and a driven wheel pair respectively assembled on the front and rear ends of the chassis 12, and is retracted and lowered by a telescopic rod. When running on general roads, the crawler running mechanism 14 is in a retracted state; when running on rails, the rail running mechanism 14 is lowered to support the entire vehicle for running; when working, the rail running mechanism 14 is lowered and attached to the top of the rail, and the crawler running mechanism 13 is used for guiding to prevent derailment. At this time, the rail wheels are in a free state of follow-up.

[0054] The operating device consists of a support assembly 5, a screening assembly 2, and a conveying assembly 4, which are movably installed at the rear end of the chassis 12. The support assembly 5 serves as a load-bearing device, and the screening assembly 2 and the conveying assembly 4 are movably installed on the support assembly 5; the screening assembly 2 consists of a frame assembly 21, a mounting assembly 22 and a screen 23, which screens the material placed on the screen 23, backfills the clean material into the roadbed, and collects the waste in the screen frame 211. The screening device is a circular vibrating screen with strong excitation force, which is suitable for screening old ballast. A discharge hole is left at the bottom of the guide frame 212, and the waste is placed on the conveyor belt 45 through the discharge hole and discharged; the conveying assembly consists of a conveying frame, a rotating shaft 48, a conveyor belt 45, etc., which conveys the waste in the screen frame 211 to the outside of the line and can be conveyed on both sides of the line. The conveying distance is freely adjustable. The device is divided into two sections, and the folding action of any section can be achieved through the hinge point and the folding telescopic rod 42, and the folding angle is freely adjustable.

[0055] A crossbeam 54 passes through the middle of the screen frame 211 to increase the overall strength and rigidity; the woven high-carbon steel screen 23 has good wear resistance and is suitable for ballast screening; receiving plates 3 are movably installed on both sides of the screen frame 211 to increase the material receiving area, and the receiving plates 3 are fixed by connecting rods 31; the screen surface is set at an inclination angle of 15° to 25°, and the screen 23 is hooked on both sides with a hooking device. In order to ensure that the screened material is evenly distributed on the screen surface, the screen surface is installed in an arch shape, and the screen is fixed in the middle by a central support structure; at the four corners of the screen frame 211, spring mounting seats 53 are movably installed at both ends of the two crossbeams 54, and are then connected to the spring isolation seats 52 movably installed on the frame 51, and the whole falls on the frame 51;

[0056] The crossbeam 54 can be a box beam or a corrugated beam, which is widely used in large vibrating screens.

[0057] The working principle of a railway ballast screening vehicle provided by the utility model is as follows:

[0058] When in use, the track running mechanism 13 is lifted up by bending the rail running mechanism 14 downward, so that the rail running mechanism 14 is in contact with the rail, and then the rail running mechanism 14 drives the vehicle body 1 to move on the rail. During the movement, the working arm 15 is used to dig out the stones on the ballast and transfer them to the top of the screening assembly 2.

[0059] Then, the screening assembly 2 is started, and the vibrator 213 drives the screen frame 211 to vibrate up and down, thereby screening the gravel that falls onto the screen 23, allowing the gravel to pass through the screen 23 and fall back onto the track, and allowing the generated impurities and soil to pass through the guide frame 212 and fall onto the conveying assembly 4;

[0060] Then, the conveying assembly 4 is started, so that the driving member 44 drives the rotating shaft 48 to rotate, and then the rotating shaft 48 drives the conveying belt 45 to move, thereby conveying and transferring the collected impurities.

[0061] Compared with the related art, the railway ballast screening vehicle provided by the present invention has the following beneficial effects:

[0062] Through the cooperation of the vehicle body 1, the crawler running mechanism 13, the rail running mechanism 14, the working arm 15, the screening component 2 and the conveying component 4, when in use, they can independently go up and down the rails, adapt to various line environments, and complete the ballast excavation, screening, conveying and other operation processes. Manual labor only assists, thereby increasing the efficiency of ballast screening and reducing the labor intensity of manual labor. In addition, the vibrator 213 drives the screen 23 to vibrate with high intensity, which can increase the effect of ballast screening and reduce ballast waste.

[0063] Second embodiment

[0064] Please refer to Figure 9 Based on the railway ballast screening vehicle provided in the first embodiment of the present application, the second embodiment of the present application proposes another railway ballast screening vehicle. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0065] Specifically, the difference of the railway ballast screening vehicle provided in the second embodiment of the present application is that, in a railway ballast screening vehicle, support plates 6 are fixedly installed at both ends of the outer side of the crossbeam 54, a top plate 61 is fixedly installed on the top of the support plate 6, and the interior of both ends of the top plate 61 is threadedly connected with fixing screws 63, and a clamping plate 62 is provided on the outer side of the fixing screw 63.

[0066] The top of the top plate 61 is attached to the bottom of the screen 23 , and the clamping plate 62 is disposed on the top of the screen 23 .

[0067] The working principle of a railway ballast screening vehicle provided by the utility model is as follows:

[0068] When in use, the top plate 61 is installed on the bottom of the screen 23, and the clamping plate 62 is placed on the top of the screen 23. Then, the fixing screw 63 is passed through the clamping plate 62 and the screen 23 and then threaded to the top of the top plate 61. This can limit and support the screen 23.

[0069] Compared with the related art, the railway ballast screening vehicle provided by the present invention has the following beneficial effects:

[0070] By cooperating with each other through the support plate 6, top plate 61, clamping plate 62 and fixing screws 63, when in use, the top plate 61 is placed at the bottom of the screen 23, and the clamping plate 62 is placed at the top of the screen 23. Then, the fixing screws 63 pass through the clamping plate 62 and are threadedly connected to the top of the top plate 61, thereby playing the role of clamping and supporting the screen, avoiding the middle position of the screen 23 from collapsing and affecting the screening effect.

[0071] Third embodiment

[0072] Please refer to Figure 10 Based on the railway ballast screening vehicle provided in the first embodiment of the present application, the third embodiment of the present application provides another railway ballast screening vehicle. The third embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the third embodiment will not affect the independent implementation of the first embodiment.

[0073] Specifically, the difference of the railway ballast screening vehicle provided in the third embodiment of the present application is that, in a railway ballast screening vehicle, a rotating seat 7 is fixedly installed at the bottom of the screen frame 211, and a material guide plate 71 is rotatably connected inside the rotating seat 7. A slide groove 72 is provided on both sides of the material guide plate 71, and the inner side surface of the slide groove 72 is slidably connected to a slide rod 74, and the outer side surface of the slide rod 74 is rotatably connected to a pneumatic telescopic rod 73.

[0074] A fixing block 75 is fixedly mounted on the outer side of the pneumatic telescopic rod 73 , and the fixing block 75 is fixedly mounted on the side of the screen frame 211 .

[0075] The working principle of a railway ballast screening vehicle provided by the utility model is as follows:

[0076] When in use, the stones falling from the screen 23 will fall onto the guide plate 71, and the guide plate 71 can guide the stones to prevent them from falling onto the vehicle body 1. After the user finishes, the pneumatic telescopic rod 73 can be started to extend the pneumatic telescopic rod 73, so that the slide bar 74 slides on the inner side of the slide groove 72, and the guide plate 71 is adjusted to a state perpendicular to the screen frame 211, thereby storing the guide plate 71.

[0077] Compared with the related art, the railway ballast screening vehicle provided by the present invention has the following beneficial effects:

[0078] By cooperating with each other, the rotating seat 7, the guide plate 71, the slide 72, the pneumatic telescopic rod 73, the slide rod 74 and the fixed block 75 and other structures, when in use, the angle of the guide plate 71 can be adjusted by starting the telescopic rod 73, thereby guiding the stones after screening and preventing the stones from falling onto the vehicle body 1.

[0079] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A railway ballast screening vehicle, characterized in that: include: A vehicle body, wherein a chassis is provided at the bottom of the vehicle body, rail running mechanisms are provided at both ends of the chassis, and a cab and an operating arm are provided at the top of the vehicle body; A support assembly, the support assembly being arranged on the top of the vehicle body; 4. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The through-hole, the screw bolts comprise a through-hole, a screwdriver, and a nut. The through-holes are connected via a through-hole, and the two foot pieces comprise a through-hole, a screw bolt and a nut. The conveying assembly is arranged at the bottom of the screening assembly, and the conveying assembly includes a first conveying frame, a folding telescopic rod, a support frame, a driving member, a conveyor belt, a tensioning assembly, a rotating shaft and a second conveying frame, the support frame is fixedly installed at the bottom of the screen frame, the first conveying frame is fixedly installed on the top of the support frame, the second conveying frame is rotatably connected to one end of the first conveying frame, one end of the folding telescopic rod is rotatably connected to one end on both sides of the first conveying frame, and the other end of the folding telescopic rod is rotatably connected to the side of the second conveying frame, the tensioning assembly is fixedly installed on both sides of one end of the second conveying frame, the rotating shaft is rotatably connected to the inside of the tensioning assembly and the other end of the inner side surface of the first conveying frame, the driving member is fixedly installed on one side of the other end of the first conveying frame, and the conveying end of the driving member is fixedly installed on one end of one of the rotating shafts, and the conveying is respectively sleeved on the outer side surfaces of the two rotating shafts.

2. A railway ballast screening vehicle according to claim 1, characterized in that: The working arm is arranged on the side of the cab, and a crawler walking mechanism is arranged at the bottom of the chassis.

3. The railway ballast screening vehicle according to claim 1, characterized in that: The support assembly includes a frame, a spring isolation seat, a mounting seat and a crossbeam. The frame is fixedly installed on the top of the vehicle body, the spring isolation seats are fixedly installed on the four sides of the top of the frame, the mounting seat is fixedly installed on the top of the spring isolation seat, and both ends of the crossbeam are arranged inside the mounting seat.

4. The railway ballast screening vehicle according to claim 3, characterized in that: The crossbeam is fixedly mounted on the inside of the screen frame, and is arranged at the bottom of the screen.

5. The railway ballast screening vehicle according to claim 1, characterized in that: Both sides of the screen frame are rotatably connected with connecting rods, and one end of the connecting rod is fixedly installed with a material receiving plate.

6. The railway ballast screening vehicle according to claim 1, characterized in that: The bottom of the material guiding frame is arranged on the top of the conveyor belt.

7. The railway ballast screening vehicle according to claim 3, characterized in that: Support plates are fixedly installed at both ends of the outer side of the beam, a top plate is fixedly installed on the top of the support plate, fixing screws are threadedly connected inside the two ends of the top plate, and a clamping plate is provided on the outer side of the fixing screw.

8. The railway ballast screening vehicle according to claim 7, characterized in that: The top of the top plate is attached to the bottom of the screen, and the clamping plate is arranged on the top of the screen.

9. The railway ballast screening vehicle according to claim 1, characterized in that: A rotating seat is fixedly installed at the bottom of the screen frame, and a material guide plate is rotatably connected inside the rotating seat. Slide grooves are provided on both sides of the material guide plate. The inner side of the slide groove is slidably connected to a slide rod, and the outer side of the slide rod is rotatably connected to a pneumatic telescopic rod.

10. The railway ballast screening vehicle according to claim 9, characterized in that: A fixing block is fixedly installed on the outer side surface of the pneumatic telescopic rod, and the fixing block is fixedly installed on the side surface of the screen frame.

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