Lubricating and anti-attrition robot for steel rail of high-speed railway

Abstract

The invention is suitable for the technical field of railway maintenance, and provides a high-speed railway steel rail lubricating and anti-attrition robot which comprises a main body frame, rolling supports are arranged on the two sides of the bottom of the main body frame, the high-speed railway steel rail lubricating and anti-attrition robot further comprises a grinding assembly, and the grinding assembly comprises a lifting frame fixedly connected into the main body frame and vertically arranged; the output end of the driving box body is a polishing disc located at the bottom of the driving box body. The progressive supporting assemblies are located on the two sides of the main body frame, each progressive supporting assembly comprises guide rails fixedly connected to the two sides of the main body frame, each guide rail is provided with two movable parts capable of sliding, and the bottoms of the movable parts are fixedly connected with vertically-arranged telescopic supporting legs. The robot has the beneficial effects that the problem of site limitation during grinding of a single railway steel rail can be solved, the robot can stably translate along the steel rail, and therefore the grinding efficiency is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of railway maintenance, and in particular relates to a high-speed railway rail lubrication and wear reduction robot. Background Art

[0002] Railway rails are one of the most important components of the railway track system. They directly bear the weight of the train and guide the train operation.

[0003] Long-term operation of trains will cause some wear on the surface of the rails. When the surface of the rails is uneven, the vibration and noise of the running train will increase, and the wear of the wheels will also increase. Therefore, it is necessary to grind the rails regularly to improve the train's operating performance, extend the life of the rails and ensure driving safety.

[0004] At present, there are two main types of railway rail grinding equipment. One is to grind on two rails simultaneously, and the other is to grind on a single rail each time. Although the former is stable in operation, it is bulky because it has to span two rails. The latter can be a small device, but because there is no flat ground on both sides of a single rail, it requires support from personnel when grinding a single rail. This makes the entire equipment unstable when translated, which is bound to affect the grinding effect. Therefore, a high-speed railway rail lubrication and wear reduction robot is proposed to solve the above problems. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a high-speed railway rail lubrication and wear reduction robot, aiming to solve the problems mentioned in the above background technology.

[0006] The embodiment of the present invention is implemented as follows: a high-speed railway rail lubrication and wear reduction robot includes a main frame, and rolling brackets for supporting the robot to move on the railway rails are arranged on both sides of the bottom of the main frame, and also includes:

[0007] A grinding assembly is located in the main frame, and the grinding assembly includes a lifting frame fixedly connected to the main frame and arranged vertically, a driving box is arranged in the lifting frame, the output end of the driving box is an output shaft located at its bottom, and a grinding disc is arranged at one end of the output shaft away from the driving box, the lifting frame is used to drive the driving box to move in the vertical direction, and the driving box is used to drive the output shaft and the grinding disc to rotate;

[0008] The maintenance component is also located in the main frame. The output end of the maintenance component is a nozzle arranged linearly with the grinding disc, and the direction of the nozzle is the same as the direction of the output shaft. The nozzle is used to spray anti-rust lubricant on the railway rail after being ground by the grinding disc;

[0009] A progressive support assembly is located on both sides of the main frame, and the progressive support assembly includes guide rails fixedly connected to both sides of the main frame, two sliding movable parts are arranged on the guide rails, and the bottom of the movable parts is fixedly connected with vertically arranged telescopic legs. When the robot is located on the railway rails, the telescopic legs on both sides are used to contact the sleepers at the bottom of the railway rails.

[0010] Preferably, the rolling bracket includes supporting side plates fixedly connected to both sides of the main frame, and two installation holes distributed laterally at intervals are provided at the bottom of the supporting side plates. Support rollers for contacting the railway rails are rotatably arranged in the installation holes at corresponding positions of the supporting side plates on both sides, and the length of the support rollers is greater than the width of the railway rails.

[0011] Preferably, the support side plates on both sides are rotatably connected with an adjusting screw located at the top of the two supporting rollers, one end of the adjusting screw is fixedly connected to a driving motor, and two moving blocks are cooperatively sleeved on the adjusting screw, and a limiting guide frame located on both sides of the moving block is fixedly connected between the two supporting side plates, and the bottom of the moving block is rotatably connected with a limiting roller located between the supporting rollers and in a vertical state, and the driving motor is used to drive the adjusting screw to rotate so that the two moving blocks on the adjusting screw move synchronously in opposite directions.

[0012] Preferably, the guide rail includes a folding plate fixedly connected to the main frame, the folding plate is provided with a guide groove arranged along the length direction of the folding plate, a connecting block is slidably arranged in the guide groove, the moving part includes a power box body fixedly connected to the top of the connecting block, the output end of the power box body is a plurality of rollers located at the bottom of the power box body and arranged on both sides of the connecting block, both sides of the connecting block are rotatably connected to a plurality of limiting wheels located at the bottom of the folding plate, and the telescopic support leg is fixedly connected to the top of the connecting block.

[0013] Preferably, both sides of the guide groove on the folding plate are fixedly connected with a rack structure, the roller is a gear-like structure that cooperates with the rack structure, the moving parts and telescopic legs at corresponding positions on both sides of the main frame are the same working group, and when the telescopic legs of one of the working groups are detached from the sleepers of the railway rails, the moving parts in the working group are used to adjust their own positions on the folding plate.

[0014] Preferably, the lifting frame includes a gantry frame fixedly connected to the main frame, and sliders fixedly connected to the gantry frame are slidably arranged on both sides of the driving box, and the sliders move in a vertical direction on the driving box. An adjusting screw connected to the driving box is arranged on the top of the gantry frame, and the adjusting screw is used to drive the driving box to move in the vertical direction.

[0015] Preferably, the bottom of the driving housing is fixedly connected with a first guard plate located on both sides of the grinding disc.

[0016] Preferably, the maintenance component includes a pressurized material box fixedly connected to the main frame, and vertically arranged telescopic parts are fixedly connected to both sides of the bottom of the pressurized material box, and the other ends of the two telescopic parts are fixedly connected to a transversely arranged cross frame, and the nozzle is fixedly connected to the cross frame. The nozzle and the pressurized material box are connected by a telescopic hose, and a second guard plate located on both sides of the nozzle is fixedly connected to the cross frame.

[0017] The embodiment of the present invention provides a high-speed railway rail lubrication and wear reduction robot, which has the following beneficial effects:

[0018] This robot adopts the form of grinding a single railway rail. First of all, it has the characteristics of small size. When this robot is working, the rolling bracket is located on the railway rail, and the grinding disc that moves down will grind the railway rail. After grinding, the nozzle will spray anti-rust lubricant on the ground after grinding. It can not only grind the railway rail, but also play the role of lubrication and maintenance. The characteristic is that this robot does not require personnel to operate it manually. Under the premise that there is no flat ground on both sides of the railway rail, the sleepers under the rail are used for support. Through the cooperation of the moving parts and the telescopic legs, the telescopic legs can be located on the sleepers every time they fall. Because the sleepers are flat relative to the railway rails, the moving parts will play a role in pushing the robot forward. Therefore, this robot can solve the site limitation problem when grinding a single railway rail, so that it can stably move along the rail, thereby ensuring the efficiency of grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional structural diagram of a high-speed railway rail lubrication and wear reduction robot provided in an embodiment of the present invention;

[0020] Figure 2 A front view of a high-speed railway rail lubrication and wear reduction robot provided by an embodiment of the present invention;

[0021] Figure 3 A side view of a high-speed railway rail lubrication and wear reduction robot provided by an embodiment of the present invention;

[0022] Figure 4 A three-dimensional structural diagram of a grinding assembly provided in an embodiment of the present invention;

[0023] Figure 5 A three-dimensional structural diagram of a maintenance component provided in an embodiment of the present invention;

[0024] Figure 6 A three-dimensional structural diagram of a rolling bracket and a main frame provided in an embodiment of the present invention;

[0025] Figure 7 for Figure 6 A partial enlarged view of the middle A;

[0026] Figure 8 A three-dimensional structural diagram of a progressive support assembly provided by an embodiment of the present invention;

[0027] Fig. 9 A three-dimensional structural diagram of a folding plate provided in an embodiment of the present invention.

[0028] In the attached figure: 1. Main frame; 2. Rolling bracket; 201. Support side plate; 202. Support roller; 203. Adjusting screw; 204. Driving motor; 205. Moving block; 206. Limiting guide frame; 207. Limiting roller; 3. Grinding assembly; 301. Lifting frame; 3011. Gate frame; 3012. Sliding block; 3013. Adjusting screw; 302. Driving box; 303. Output shaft; 304. Grinding disc; 4. Maintenance Components; 401, nozzle; 402, booster box; 403, telescopic part; 404, cross frame; 405, telescopic hose; 406, second guard plate; 5, progressive support assembly; 501, guide rail; 5011, folding plate; 5012, guide groove; 5013, connecting block; 502, moving part; 5021, power box; 5022, roller; 503, telescopic support foot; 6, limiting wheel; 7, rack structure; 8, first guard plate. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a high-speed railway rail lubrication and wear reduction robot provided by an embodiment of the present invention includes a main frame 1, and rolling brackets 2 for supporting the robot to move on the railway rails are arranged on both sides of the bottom of the main frame 1, and also include:

[0032] The grinding assembly 3 is located in the main frame 1. The grinding assembly 3 includes a lifting frame 301 fixedly connected to the main frame 1 and vertically arranged. A driving box 302 is arranged in the lifting frame 301. The output end of the driving box 302 is an output shaft 303 located at its bottom. The end of the output shaft 303 away from the driving box 302 is matched with a grinding disc 304. The lifting frame 301 is used to drive the driving box 302 to move in the vertical direction, and the driving box 302 is used to drive the output shaft 303 and the grinding disc 304 to rotate.

[0033] Maintenance component 4, maintenance component 4 is also located in the main frame 1, the output end of the maintenance component 4 is a nozzle 401 arranged linearly with the grinding disc 304, and the direction of the nozzle 401 is the same as the direction of the output shaft 303, and the nozzle 401 is used to spray anti-rust lubricant onto the railway rail after being ground by the grinding disc 304;

[0034] The progressive support assembly 5 is located on both sides of the main frame 1. The progressive support assembly 5 includes guide rails 501 fixedly connected to both sides of the main frame 1. Two sliding movable members 502 are arranged on the guide rails 501. The bottom of the movable member 502 is fixedly connected with a vertically arranged telescopic support leg 503. When the robot is located on the railway rails, the telescopic support legs 503 on both sides are used to contact the sleepers at the bottom of the railway rails.

[0035] In one embodiment of the present invention, the robot is in the form of grinding a single railway rail. First of all, it has the characteristics of small size. When the robot is working, the rolling bracket 2 is located on the railway rail, and the grinding disc 304 that has moved down will grind the railway rail. After grinding, the nozzle 401 will spray anti-rust lubricant on the grounded railway rail, which can not only grind the railway rail, but also play the role of lubrication and maintenance. The characteristic is that the robot does not require personnel to operate manually. Under the premise that there is no flat ground on both sides of the railway rail, the sleepers under the rail are used for support. Through the cooperation of the moving part 502 and the telescopic support leg 503, the telescopic support leg 503 can be located on the sleeper every time it falls. Because the sleeper is flat relative to the railway rail, the moving part 502 will play a role in pushing the robot forward. Therefore, the robot can solve the site limitation problem when grinding a single railway rail, so that it can stably translate along the rail, thereby ensuring the efficiency of grinding.

[0036] In one embodiment of the present invention, Figure 4 As shown, the bottom of the driving box 302 is fixedly connected to the first guard plate 8 located on both sides of the grinding disc 304. Figure 5As shown, the maintenance component 4 includes a pressurized material box 402 fixedly connected to the main frame 1, and both sides of the bottom of the pressurized material box 402 are fixedly connected with vertically arranged telescopic parts 403, and the other ends of the two telescopic parts 403 are fixedly connected with a horizontally arranged cross frame 404, and the nozzle 401 is fixedly connected to the cross frame 404. The nozzle 401 and the pressurized material box 402 are connected by a telescopic hose 405, and the cross frame 404 is fixedly connected with a second guard plate 406 located on both sides of the nozzle 401. When the robot is working, the rolling bracket 2 is in contact with the railway rails. At this time, the grinding disc 304 is located between the two rolling brackets 2. After the driving box 302 descends, the grinding disc 304 will contact the rails. A motor is installed, and the grinding disc 304 is driven by the motor to rotate, so that the rail can be polished. The pressurized material box 402 stores anti-rust lubricant. The telescopic part 403 can be used to control the nozzle 401 to move down to the top of the rail. It should be noted that, based on the travel direction of the robot, the maintenance component 4 is located on the rear side of the grinding component 3, and the rail polished by the grinding disc 304 will be directly located below the nozzle 401, and the anti-rust lubricant will directly adhere to the polished rail. The existence of the first guard plate 8 can prevent iron filings from splashing during grinding, and the second guard plate 406 can prevent the anti-rust lubricant from splashing. The telescopic part 403 can be in the form of an electric telescopic rod, and of course it can also be in the form of a hydraulic telescopic rod. In addition, Figure 4 As shown, the lifting frame 301 includes a gantry frame 3011 fixedly connected to the main frame 1, and sliders 3012 fixedly connected to the gantry frame 3011 are slidably arranged on both sides of the driving box 302, and the sliders 3012 move in a vertical direction on the driving box 302, and an adjusting screw 3013 connected to the driving box 302 is arranged on the top of the gantry frame 3011, and the adjusting screw 3013 is used to drive the driving box 302 to move in the vertical direction. When the adjusting screw 3013 rotates, the adjusting screw 3013 will push the driving box 302 to move, thereby changing the height of the grinding disc 304 and realizing the contact or separation of the grinding disc 304 and the rail.

[0037] like Figure 6 and Figure 7 As shown, as a preferred embodiment of the present invention, the rolling bracket 2 includes supporting side plates 201 fixedly connected to both sides of the main frame 1, and two installation holes distributed laterally at intervals are provided at the bottom of the supporting side plates 201. Support rollers 202 for contacting the railway rails are rotatably arranged in the installation holes at corresponding positions of the supporting side plates 201 on both sides, and the length of the supporting rollers 202 is greater than the width of the railway rails.

[0038] In one case of this embodiment, the support side plates 201 on both sides are rotatably connected with an adjusting screw rod 203 located at the top of the two supporting rollers 202, one end of the adjusting screw rod 203 is fixedly connected with a driving motor 204, and two moving blocks 205 are sleeved on the adjusting screw rod 203. A limiting guide frame 206 located on both sides of the moving block 205 is fixedly connected between the two supporting side plates 201. The bottom of the moving block 205 is rotatably connected with a limiting roller 207 located between the supporting rollers 202 and in a vertical state. The driving motor 204 is used to drive the adjusting screw rod 203 to rotate so that the two adjusting screw rods 203 are The moving block 205 moves synchronously in opposite directions. If only the supporting roller 202 is in contact with the rail, then when the robot is moving, since the length of the supporting roller 202 is greater than the width of the rail, the robot may be offset in the lateral direction. Therefore, the robot needs to be restricted in the lateral direction so that it can move smoothly along the rail during grinding. The driving motor 204 controls the adjusting screw 203 to rotate, so that the moving block 205 changes its position, so that the two limiting rollers 207 move relatively, and the two limiting rollers 207 move to both sides of the rail and abut against both sides of the rail.

[0039] like Figure 8 and Fig. 9 As shown, as a preferred embodiment of the present invention, the guide rail 501 includes a folding plate 5011 fixedly connected to the main frame 1, the folding plate 5011 is provided with a guide groove 5012 arranged along the length direction of the folding plate 5011, and a connecting block 5013 is slidably arranged in the guide groove 5012, the moving member 502 includes a power box 5021 fixedly connected to the top of the connecting block 5013, the output end of the power box 5021 is a plurality of rollers 5022 located at the bottom of the power box 5021 and arranged on both sides of the connecting block 5013, both sides of the connecting block 5013 are rotatably connected with a plurality of limiting wheels 6 located at the bottom of the folding plate 5011, and the telescopic support leg 503 is fixedly connected to the top of the connecting block 5013.

[0040] In one case of the present embodiment, rack structures 7 are fixedly connected to both sides of the guide groove 5012 on the folding plate 5011, and the roller 5022 is a gear-shaped structure matched with the rack structure 7. The moving parts 502 and telescopic legs 503 at corresponding positions on both sides of the main frame 1 are the same working group. When the telescopic legs 503 of one of the working groups are separated from the sleepers of the railway rails, the moving parts 502 in the working group are used to adjust their own positions on the folding plate 5011. The telescopic legs 503 can be in the form of electric telescopic rods, and of course, they can also be in the form of hydraulic telescopic rods. For the sake of convenience, the working group on the front side is referred to as the first working group, and the working group on the rear side is referred to as the second working group with reference to the moving direction of the present robot. In the startup stage of the present robot, the telescopic legs 503 of the two working groups are in an extended state and in contact with the sleepers. At this time, the two power boxes 5021 are located in the guide groove 50 12, when the robot moves, the telescopic legs 503 in the second working group will shrink, and the corresponding roller 5022 will rotate to make the entire working group move forward until it moves to the top of the sleeper in front, and then the telescopic legs 503 will extend to contact the sleeper, and then the telescopic legs 503 in the first working group will shrink. At this time, the rotation of the roller 5022 in the second working group will drive the main frame 1 and the first working group to move forward synchronously. When the first working group moves to the top of the sleeper further forward, the corresponding telescopic legs 503 will go down and contact the sleeper. This progressive process will drive the robot to move smoothly, because no matter what state the robot moves in, there will be two telescopic legs 503 on both sides to stabilize the posture. This method is different from the operation of manual support, because manual participation will cause problems such as offset, shaking, deflection, etc., which will directly affect the grinding effect.

[0041] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0043] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high-speed railway rail lubrication and wear reduction robot, comprising a main frame (1), wherein rolling brackets (2) are arranged on both sides of the bottom of the main frame (1), and characterized in that: Also includes: A grinding assembly (3), the grinding assembly (3) comprising a lifting frame (301) fixedly connected to the main frame (1) and arranged vertically, a driving box (302) being arranged in the lifting frame (301), an output end of the driving box (302) being an output shaft (303) located at its bottom, a grinding disc (304) being arranged at one end of the output shaft (303) away from the driving box (302), the lifting frame (301) being used for driving the driving box (302) to move in a vertical direction, and the driving box (302) being used for driving the output shaft (303) and the grinding disc (304) to rotate; A maintenance component (4), wherein the output end of the maintenance component (4) is a nozzle (401) arranged linearly with the grinding disc (304), and the orientation of the nozzle (401) is the same as the direction of the output shaft (303), and the nozzle (401) is used to spray an anti-rust lubricant onto the railway rail after being ground by the grinding disc (304); A progressive support assembly (5), the progressive support assembly (5) comprising guide rails (501) fixedly connected to both sides of a main frame (1), two sliding movable members (502) being arranged on the guide rails (501), the bottom of the movable members (502) being fixedly connected with vertically arranged telescopic legs (503), and when the robot is located on a railway rail, the telescopic legs (503) on both sides are used to contact the sleepers at the bottom of the railway rail.

2. The high-speed railway rail lubrication and wear reduction robot according to claim 1, characterized in that: The rolling bracket (2) comprises supporting side plates (201) fixedly connected to both sides of the main frame (1); two installation holes are arranged at the bottom of the supporting side plates (201) and are spaced apart from each other in a transverse direction; supporting rollers (202) for contacting the railway rails are rotatably arranged in the installation holes at corresponding positions of the supporting side plates (201) on both sides; the length of the supporting rollers (202) is greater than the width of the railway rails.

3. The high-speed railway rail lubrication and wear reduction robot according to claim 2, characterized in that: The support side plates (201) on both sides are rotatably connected with an adjusting screw rod (203) located at the top of the two supporting rollers (202); one end of the adjusting screw rod (203) is fixedly connected with a driving motor (204); two moving blocks (205) are sleeved on the adjusting screw rod (203); a limiting guide frame (206) located on both sides of the moving block (205) is fixedly connected between the two supporting side plates (201); the bottom of the moving block (205) is rotatably connected with a limiting roller (207) located between the supporting rollers (202) and in a vertical state; the driving motor (204) is used to drive the adjusting screw rod (203) to rotate, so that the two moving blocks (205) on the adjusting screw rod (203) move synchronously in opposite directions.

4. The high-speed railway rail lubrication and wear reduction robot according to claim 1, characterized in that: The guide rail (501) comprises a folding plate (5011) fixedly connected to the main frame (1); the folding plate (5011) is provided with a guide groove (5012) arranged along the length direction of the folding plate (5011); a connecting block (5013) is slidably arranged in the guide groove (5012); the moving member (502) comprises a power box (5021) fixedly connected to the top of the connecting block (5013); the output end of the power box (5021) is a plurality of rollers (5022) located at the bottom of the power box and disposed on both sides of the connecting block (5013); both sides of the connecting block (5013) are rotatably connected to a plurality of limiting wheels (6) located at the bottom of the folding plate (5011); and the telescopic support leg (503) is fixedly connected to the top of the connecting block (5013).

5. The high-speed railway rail lubrication and wear reduction robot according to claim 4, characterized in that: The two sides of the guide groove (5012) on the folding plate (5011) are fixedly connected with a rack structure (7); the roller (5022) is a gear-shaped structure matched with the rack structure (7); the moving parts (502) and the telescopic legs (503) at corresponding positions on both sides of the main frame (1) are the same working group; when the telescopic legs (503) of one of the working groups are separated from the sleepers of the railway rails, the moving parts (502) in the working group are used to adjust their own positions on the folding plate (5011).

6. The high-speed railway rail lubrication and wear reduction robot according to claim 1, characterized in that: The lifting frame (301) comprises a gantry frame (3011) fixedly connected to the main frame (1); sliders (3012) fixedly connected to the gantry frame (3011) are slidably arranged on both sides of the driving box (302); the sliders (3012) move in a vertical direction on the driving box (302); an adjusting screw (3013) connected to the driving box (302) is arranged on the top of the gantry frame (3011); the adjusting screw (3013) is used to drive the driving box (302) to move in a vertical direction.

7. The high-speed railway rail lubrication and wear reduction robot according to claim 1, characterized in that: The bottom of the driving housing (302) is fixedly connected to a first guard plate (8) located on both sides of the grinding disc (304).

8. The high-speed railway rail lubrication and wear reduction robot according to claim 1, characterized in that: The maintenance component (4) comprises a pressurized material box (402) fixedly connected to the main frame (1), and the two sides of the bottom of the pressurized material box (402) are fixedly connected with vertically arranged telescopic parts (403), and the other ends of the two telescopic parts (403) are fixedly connected with a horizontally arranged cross frame (404), and the nozzle (401) is fixedly connected to the cross frame (404). The nozzle (401) and the pressurized material box (402) are connected via a telescopic hose (405), and the cross frame (404) is fixedly connected with a second guard plate (406) located on both sides of the nozzle (401).

Images