Road crack repairing device for traffic engineering

Abstract

The utility model discloses a road crack repairing device for traffic engineering, which relates to the technical field of traffic engineering maintenance, and comprises a bottom plate, the outer wall of the bottom plate is fixedly connected with a push rod, the outer wall of the bottom of the bottom plate is fixedly connected with a plurality of electric universal wheels, and the outer wall of the top of the bottom plate is fixedly connected with a stirring tank. Through the stirring rod and the brush rod, when the stirring rod rotates, a gear is driven to rotate, then the gear drives a crown gear to rotate, when the crown gear rotates, a rotating shaft is driven to rotate, then the rotating shaft drives a belt wheel to rotate, when the belt wheel rotates, a second belt wheel is driven to rotate through a belt, and when the second belt wheel rotates, the brush rod is driven to rotate. The repairing quality is improved, garbage impurities existing in cracks are effectively removed, asphalt and the cracks are tightly bonded, loosening caused by untight bonding between the asphalt and the cracks is prevented, meanwhile, the asphalt is effectively prevented from being solidified in equipment, and the asphalt can be stably discharged.

Description

Technical Field

[0001] The utility model belongs to the technical field of traffic engineering maintenance, in particular to a highway crack repairing device for traffic engineering. Background Art

[0002] Highways are public roads for cars and public transportation. With the development of the economy, most roads are paved with asphalt. During the long-term use of roads, the surface of the roads will crack due to factors such as climate and pressure. If the cracks are not treated in time, it will cause bumps in the driving vehicles, causing discomfort to the drivers, and easily lead to traffic accidents:

[0003] The presence of cracks will affect the smoothness of the road surface, causing vehicles to bump up and down, reducing driving comfort and safety. The repair device can fill the cracks to restore the road surface to a smooth surface, reduce vehicle wear and driving noise, and improve the performance of the road:

[0004] When existing equipment is used to repair road cracks, there will be gaps at the junction of asphalt and cracks due to garbage impurities in the road cracks, which will cause the asphalt to loosen after filling. Therefore, we propose a road crack repair device for traffic engineering. Utility Model Content

[0005] The utility model aims to provide a road crack repairing device for traffic engineering, which solves the problem that when the existing equipment repairs road cracks, there will be gaps at the bonding points between asphalt and cracks due to garbage impurities in the road cracks, resulting in loosening of asphalt after filling.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a road crack repair device for traffic engineering, comprising a bottom plate, the outer wall of the bottom plate is fixedly connected with a push rod, the bottom outer wall of the bottom plate is fixedly connected with a plurality of electric universal wheels, the top outer wall of the bottom plate is fixedly connected with a stirring tank, the top inner wall of the stirring tank is fixedly connected with a feeding pipe, and the top outer wall of the stirring tank is provided with a cleaning mechanism;

[0008] The cleaning mechanism includes a mounting frame, the bottom outer wall of the mounting frame is fixedly connected to the top outer wall of the stirring tank, the inner wall of the mounting frame is fixedly connected to a first motor, the bottom output shaft of the first motor is fixedly connected to a stirring rod through a coupling, the outer wall of the stirring rod is rotatably connected to the inner wall of the stirring tank, a plurality of scrapers are fixedly connected to the outer wall of the stirring rod, a conveying pipe is fixedly connected to the bottom inner wall of the stirring tank, a conveying pump is fixedly connected to the outer wall of the conveying pipe away from the first motor, and a discharge pipe is fixedly connected to the bottom output end of the conveying pump.

[0009] Furthermore, the outer wall of the stirring tank is fixedly connected to a plurality of heating plates, the outer wall of the stirring rod is fixedly connected to a gear, the top outer wall of the stirring tank is fixedly connected to a fixing frame, the inner wall of the fixing frame is rotatably connected to a rotating shaft, the outer wall of the rotating shaft on the side close to the gear is fixedly connected to a crown gear, the outer wall of the crown gear is meshed with the outer wall of the gear, the outer wall of the rotating shaft at one end away from the gear is fixedly connected to a pulley, the outer wall of the pulley is transmission-connected to a belt, the outer wall of the bottom plate is fixedly connected to a plurality of mounting plates, the inner wall of the mounting plate is rotatably connected to a brush rod, the outer wall of the brush rod at one end close to the pulley is fixedly connected to pulley 2, the outer wall of pulley 2 is transmission-connected to the inner wall of the belt, and a tamping mechanism is provided on the top outer wall of the stirring tank.

[0010] Furthermore, the compacting mechanism includes a mounting block, the bottom outer wall of the mounting block is fixedly connected to the top outer wall of the mixing tank, the inner wall of the mounting block is rotatably connected to a roller, the outer wall of the roller on the side close to the gear is fixedly connected to crown gear 2, and the outer wall of crown gear 2 is meshed with the outer wall of the gear.

[0011] Furthermore, an outer wall of one end of the roller away from the second crown gear is fixedly connected with a belt pulley, and the outer wall of the belt pulley is transmission-connected with the second belt.

[0012] Furthermore, a support frame is fixedly connected to the top outer wall of the bottom plate, and a rotating rod is rotatably connected to the inner wall of the support frame.

[0013] Furthermore, the outer wall of one end of the rotating rod close to the belt pulley is fixedly connected to the second belt pulley, the outer wall of the second belt pulley is transmission-connected to the inner wall of the second belt, and the outer wall of the rotating rod away from the second belt pulley is fixedly connected to a disc.

[0014] Furthermore, the outer wall of the disc on one side away from the second belt pulley is fixedly connected to a fixing rod, the outer wall of the fixing rod is rotatably connected to a connecting rod, the outer wall of the connecting rod at one end away from the fixing rod is fixedly connected to a transmission rod, and a square groove is provided on the inner wall of the base plate.

[0015] Furthermore, the outer wall of the transmission rod is rotatably connected to a square plate, the outer wall of the square plate is slidably connected to the inner wall of the square groove, the bottom outer wall of the square plate is fixedly connected to a tamping plate, the outer wall of one end of the bottom plate close to the push rod is fixedly connected to a joint shaft, and the outer wall of the joint shaft is rotatably connected to a compacting wheel.

[0016] The utility model has the following beneficial effects:

[0017] 1. The utility model is provided with a stirring rod and a brush rod. When the stirring rod rotates, the gear rotates with it, and then the gear rotates with the crown gear. When the crown gear rotates, the rotating shaft rotates with it, and then the rotating shaft rotates with the pulley. When the pulley rotates, the belt drives the second pulley to rotate. When the second pulley rotates, the brush rod rotates with it, thereby improving the repair quality, effectively removing garbage and impurities in the cracks, making the asphalt and the cracks tightly bonded, preventing the asphalt from loosening due to loose bonding with the cracks, and effectively preventing the asphalt from solidifying in the equipment, so that the asphalt can be discharged stably.

[0018] 2. The utility model is provided with a tamping plate and a compacting wheel. When the belt pulley 2 rotates, the rotating rod will rotate with it, and then the rotating rod will rotate with the circular plate. When the circular plate rotates, the fixed rod will move in a circle. When the fixed rod moves, the connecting rod will move in an arc shape. Then the connecting rod will move the transmission rod back and forth, and then the transmission rod will slide the square plate in the square groove, thereby improving the flatness of the road. The asphalt and the road surface are kept flat through the compaction of the equipment, avoiding the difference in the horizontal planes of the asphalt and the road surface, making the vehicle driving more stable.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a cross-sectional view of the scraper structure of the utility model;

[0023] Figure 3 This is a cross-sectional view of the brush rod structure of the utility model;

[0024] Figure 4 For this utility model Figure 3Enlarged view of point A in the middle;

[0025] Figure 5 This is a cross-sectional view of the roller structure of the utility model;

[0026] Figure 6 This is a cross-sectional view of the joint shaft structure of the utility model;

[0027] Figure 7 For this utility model Figure 6 Enlarged view of point B in the middle.

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 1. Bottom plate; 101. Push rod; 102. Electric universal wheel; 103. Feed pipe; 104. Mixing tank; 2. Cleaning mechanism; 201. Mounting frame; 202. First motor; 203. Mixing rod; 204. Scraper; 205. Delivery pipe; 206. Delivery pump; 207. Discharge pipe; 208. Heating plate; 209. Fixed frame; 210. Rotating shaft; 211. Crown gear; 212. Pulley; 213. Belt; 214. Mounting plate; 215. Hair Brush rod; 216, pulley two; 217, gear; 3, tamping mechanism; 301, mounting block; 302, roller; 303, crown gear two; 304, pulley; 305, belt two; 306, support frame; 307, rotating rod; 308, pulley two; 309, disc; 310, fixing rod; 311, connecting rod; 312, transmission rod; 313, square groove; 314, square plate; 315, tamping plate; 316, joint shaft; 317, compacting wheel. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-7As shown, the utility model is a road crack repair device for traffic engineering, including a bottom plate 1, an outer wall of the bottom plate 1 is fixedly connected with a push rod 101, a bottom outer wall of the bottom plate 1 is fixedly connected with a plurality of electric universal wheels 102, a top outer wall of the bottom plate 1 is fixedly connected with a mixing tank 104, asphalt is stored through the mixing tank 104, and it is convenient for operators to use asphalt, a top inner wall of the mixing tank 104 is fixedly connected with a feed pipe 103, a top outer wall of the mixing tank 104 is provided with a cleaning mechanism 2, the cleaning mechanism 2 includes a mounting frame 201, a bottom outer wall of the mounting frame 201 is fixedly connected with the top outer wall of the mixing tank 104, a first motor 202 is fixedly connected to the inner wall of the mounting frame 201, an operator starts the first motor 202, and the first motor 202 The bottom output shaft is fixedly connected to a stirring rod 203 through a coupling, and the outer wall of the stirring rod 203 is rotatably connected to the inner wall of the stirring tank 104. The outer wall of the stirring rod 203 is fixedly connected to a plurality of scrapers 204. After the first motor 202 is started, the stirring rod 203 will be rotated with the stirring rod 203. The asphalt is stirred by the rotation of the stirring rod 203 to prevent the asphalt from solidifying in the stirring tank 104. At the same time, the scraper 204 will rotate with the stirring rod 203. When the scraper 204 rotates, the inner wall of the stirring tank 104 will be cleaned to prevent the asphalt from sticking to the stirring tank 104. The bottom inner wall of the stirring tank 104 is fixedly connected to a delivery pipe 205. The outer wall of the delivery pipe 205 on one side away from the first motor 202 is fixedly connected to a delivery pump 206. The bottom output end of the delivery pump 206 is fixedly connected to the outer wall of the delivery pipe 205. The outer wall of the stirring tank 104 is fixedly connected with a discharge pipe 207, and the operator starts the delivery pump 206. The outer wall of the stirring tank 104 is fixedly connected with a plurality of heating plates 208. The model of the heating plate 208 is Corning Corning of the United States. The ceramic has good thermal insulation performance and thermal conductivity, and can quickly transfer heat to the material in the stirring tank, while reducing heat loss, improving heating efficiency, reducing energy consumption, and saving operating costs. The outer wall of the stirring rod 203 is fixedly connected with a gear 217, and the top outer wall of the stirring tank 104 is fixedly connected with a fixing frame 209. The inner wall of the fixing frame 209 is rotatably connected with a rotating shaft 210. The outer wall of the rotating shaft 210 close to the gear 217 is fixedly connected with a crown gear 211. The outer wall of the crown gear 211 is meshed with the outer wall of the gear 217. When the rod 203 rotates, the gear 217 will rotate with it. At the same time, when the gear 217 rotates, the crown gear 211 will rotate with it. Then the shaft 210 rotates along with the crown gear 211, thus realizing the kinetic energy transmission between the parts. The outer wall of the shaft 210 away from the gear 217 is fixedly connected with a pulley 212. The outer wall of the pulley 212 is transmission-connected with a belt 213. The outer wall of the bottom plate 1 is fixedly connected with a plurality of mounting plates 214. When the shaft 210 rotates, the pulley 212 will rotate. When the pulley 212 rotates, the belt 213 will move, thus realizing the kinetic energy transmission between the parts. The inner wall of the mounting plate 214 is rotationally connected with a brush rod 215. The outer wall of the brush rod 215 close to the pulley 212 is fixedly connected with a pulley 2 216.The outer wall of the second pulley 216 is connected to the inner wall of the belt 213 by transmission. The top outer wall of the mixing tank 104 is provided with a compacting mechanism 3. When the belt 213 moves, the second pulley 216 rotates. When the second pulley 216 rotates, the brush rod 215 rotates. The garbage and impurities in the cracks of the road are cleaned by the rotation of the brush rod 215.

[0032] The compacting mechanism 3 includes a mounting block 301, the bottom outer wall of the mounting block 301 is fixedly connected to the top outer wall of the mixing tank 104, the inner wall of the mounting block 301 is rotatably connected to a roller 302, and the outer wall of the roller 302 close to the gear 217 is fixedly connected to a crown gear 2 303, when the gear 217 rotates, the crown gear 2 303 is rotated, and when the crown gear 2 303 rotates, the roller 302 is rotated, so that when one part moves, other parts will also move, and the outer wall of the crown gear 2 303 meshes with the outer wall of the gear 217. The outer wall of one end of the roller 302 away from the crown gear 2 303 is fixedly connected to a belt pulley 304, and the outer wall of the belt pulley 304 is transmission-connected to a belt 2 305. The top outer wall of the bottom plate 1 is fixedly connected to a support frame 306, and the inner wall of the support frame 306 is rotatably connected to a rotating rod 307. When the roller 302 rotates, it will drive the belt pulley 304 to rotate. When the belt pulley 304 rotates, it will drive the belt pulley 2 308 to rotate through the belt 2 305, and then the belt pulley 2 308 will drive the rotating rod 307 to rotate, thereby realizing the kinetic energy transfer process between the parts.

[0033] The outer wall of one end of the rotating rod 307 close to the belt pulley 304 is fixedly connected to the belt pulley 308, and the outer wall of the belt pulley 308 is transmission-connected to the inner wall of the belt 305. The outer wall of the rotating rod 307 on the side away from the belt pulley 308 is fixedly connected to the disk 309, and the outer wall of the disk 309 on the side away from the belt pulley 308 is fixedly connected to the fixed rod 310. When the rotating rod 307 rotates, the disk 309 is rotated with it, and then the disk 309 makes a circular motion with the fixed rod 310, so that the kinetic energy transmission between the parts is realized. The outer wall of the fixed rod 310 is rotationally connected to the connecting rod 311, and the outer wall of the connecting rod 311 on the end away from the fixed rod 310 is fixedly connected to the transmission rod 312. When the fixed rod 310 moves, the connecting rod 311 is moved in an arc. When the rod 311 moves, it will bring the transmission rod 312 to move, completing the kinetic energy transmission process between the parts. The inner wall of the base plate 1 is provided with a square groove 313, and the outer wall of the transmission rod 312 is rotatably connected to the square plate 314. When the square plate 314 slides in the square groove 313, the square plate 314 will not shake left and right, so that the square plate 314 maintains linear motion. The outer wall of the square plate 314 is slidably connected to the inner wall of the square groove 313, and the bottom outer wall of the square plate 314 is fixedly connected to a tamping plate 315. The outer wall of the end of the base plate 1 close to the push rod 101 is fixedly connected to a joint shaft 316, and the outer wall of the joint shaft 316 is rotatably connected to a compacting wheel 317. When the square plate 314 moves, it will bring the tamping plate 315 to move. When the tamping plate 315 moves, the asphalt will be compacted to make the asphalt filling more compact.

[0034] A specific application of this embodiment is:

[0035] When the staff needs to use the equipment, first put the asphalt into the mixing tank 104 from the feeding pipe 103, and then start the heating plate 208 and the first motor 202. When the heating plate 208 is started, the mixing tank 104 will be heated. At the same time, when the first motor 202 is started, the stirring rod 203 will rotate, and then the stirring rod 203 will stir the asphalt in the mixing tank 104 to prevent the asphalt from solidifying in the mixing tank 104. At the same time, the scraper 204 will rotate with the stirring rod 203. At the same time, the rotation of the scraper 204 cleans the asphalt adhered to the inner wall of the mixing tank 104, and then start the electric universal wheel 102. When the electric universal wheel 102 is started, the equipment will be moved. The device moves while the operator holds the push rod 101 by hand, and aligns the road crack with the discharge pipe 207 when the device moves. Then, when the stirring rod 203 rotates, the gear 217 rotates with the gear 217, and then the crown gear 211 rotates with the rotating shaft 210 when the crown gear 211 rotates. Then the rotating shaft 210 rotates with the pulley 212, and when the pulley 212 rotates, the pulley 216 rotates with the belt 213, and when the pulley 216 rotates, the brush rod 215 rotates. When the brush rod 215 rotates, the garbage and impurities in the road cracks are cleaned up, and then the delivery pump 206 is started at the same time. When the delivery pump 206 is started, The conveying pipe 205 extracts the asphalt in the mixing tank 104, and then the asphalt is discharged from the discharge pipe 207 to the cleaned road cracks, so that the asphalt fills the cracks, and then when the gear 217 rotates, it will drive the crown gear 2 303 to rotate, and at the same time, the roller 302 will rotate with the crown gear 2 303, and when the roller 302 rotates, it will drive the belt pulley 304 to rotate, and then the belt pulley 304 drives the belt pulley 2 308 to rotate through the belt 2 305, and when the belt pulley 2 308 rotates, it will drive the rotating rod 307 to rotate, and then the rotating rod 307 drives the disk 309 to rotate, and when the disk 309 rotates, it drives the fixed rod 310 to move in a circle, and when the fixed rod 310 moves It will bring the connecting rod 311 to move in an arc shape, and then the connecting rod 311 will bring the transmission rod 312 to move back and forth, and then the transmission rod 312 will bring the square plate 314 to slide in the square groove 313, and when the square plate 314 moves, it will bring the tamping plate 315 to move, and when the tamping plate 315 moves, the asphalt will be tamped, and the asphalt will be compacted into the cracks through the tamping plate 315, making the asphalt filling more firmly and smoothly, and at the same time, when the equipment moves, it will bring the joint shaft 316 to move, and then the joint shaft 316 will bring the compacting wheel 317 to move, and when the compacting wheel 317 moves, it will rub against the asphalt, and then the compacting wheel 317 will rotate due to the friction, and when the compacting wheel 317 rotates, the asphalt will be further compacted.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A road crack repair device for traffic engineering, comprising a base plate (1), characterized in that: A push rod (101) is fixedly connected to the outer wall of the bottom plate (1), a plurality of electric universal wheels (102) are fixedly connected to the bottom outer wall of the bottom plate (1), a stirring tank (104) is fixedly connected to the top outer wall of the bottom plate (1), a feed pipe (103) is fixedly connected to the top inner wall of the stirring tank (104), and a cleaning mechanism (2) is provided on the top outer wall of the stirring tank (104); The cleaning mechanism (2) comprises a mounting frame (201), the bottom outer wall of the mounting frame (201) is fixedly connected to the top outer wall of the stirring tank (104), the inner wall of the mounting frame (201) is fixedly connected to a first motor (202), the bottom output shaft of the first motor (202) is fixedly connected to a stirring rod (203) via a coupling, the outer wall of the stirring rod (203) is rotatably connected to the inner wall of the stirring tank (104), the outer wall of the stirring rod (203) is fixedly connected to a plurality of scrapers (204), the bottom inner wall of the stirring tank (104) is fixedly connected to a conveying pipe (205), the outer wall of the conveying pipe (205) on a side away from the first motor (202) is fixedly connected to a conveying pump (206), and the bottom output end of the conveying pump (206) is fixedly connected to a discharge pipe (207).

2. A road crack repairing device for traffic engineering according to claim 1, characterized in that: The outer wall of the stirring tank (104) is fixedly connected to a plurality of heating plates (208); the outer wall of the stirring rod (203) is fixedly connected to a gear (217); the top outer wall of the stirring tank (104) is fixedly connected to a fixing frame (209); the inner wall of the fixing frame (209) is rotatably connected to a rotating shaft (210); the outer wall of the rotating shaft (210) on one side close to the gear (217) is fixedly connected to a crown gear (211); the outer wall of the crown gear (211) is meshed with the outer wall of the gear (217); the rotating shaft (210) is away from the gear (217). A pulley (212) is fixedly connected to the outer wall of one end, and a belt (213) is transmission-connected to the outer wall of the pulley (212); a plurality of mounting plates (214) are fixedly connected to the outer wall of the bottom plate (1); a brush rod (215) is rotationally connected to the inner wall of the mounting plate (214); a second pulley (216) is fixedly connected to the outer wall of the brush rod (215) at one end close to the pulley (212); the outer wall of the second pulley (216) is transmission-connected to the inner wall of the belt (213); and a compacting mechanism (3) is provided on the top outer wall of the stirring tank (104).

3. A road crack repairing device for traffic engineering according to claim 2, characterized in that: The compacting mechanism (3) comprises a mounting block (301), the bottom outer wall of the mounting block (301) being fixedly connected to the top outer wall of the mixing tank (104), the inner wall of the mounting block (301) being rotatably connected to a roller (302), the outer wall of the roller (302) on one side close to the gear (217) being fixedly connected to a crown gear 2 (303), and the outer wall of the crown gear 2 (303) being meshed with the outer wall of the gear (217).

4. A road crack repairing device for traffic engineering according to claim 3, characterized in that: The outer wall of one end of the roller (302) away from the second crown gear (303) is fixedly connected to a belt pulley (304), and the outer wall of the belt pulley (304) is drivingly connected to the second belt (305).

5. A road crack repairing device for traffic engineering according to claim 4, characterized in that: The top outer wall of the bottom plate (1) is fixedly connected to a support frame (306), and the inner wall of the support frame (306) is rotatably connected to a rotating rod (307).

6. A road crack repairing device for traffic engineering according to claim 5, characterized in that: The outer wall of one end of the rotating rod (307) close to the belt pulley (304) is fixedly connected to the second belt pulley (308), the outer wall of the second belt pulley (308) is transmission-connected to the inner wall of the second belt (305), and the outer wall of the rotating rod (307) away from the second belt pulley (308) is fixedly connected to the disk (309).

7. A road crack repairing device for traffic engineering according to claim 6, characterized in that: The outer wall of the disk (309) at one side away from the second belt pulley (308) is fixedly connected to a fixing rod (310), the outer wall of the fixing rod (310) is rotatably connected to a connecting rod (311), the outer wall of the connecting rod (311) at one end away from the fixing rod (310) is fixedly connected to a transmission rod (312), and the inner wall of the bottom plate (1) is provided with a square groove (313).

8. A road crack repairing device for traffic engineering according to claim 7, characterized in that: The outer wall of the transmission rod (312) is rotatably connected to a square plate (314), the outer wall of the square plate (314) is slidably connected to the inner wall of the square groove (313), the bottom outer wall of the square plate (314) is fixedly connected to a tamping plate (315), the outer wall of one end of the bottom plate (1) close to the push rod (101) is fixedly connected to a joint shaft (316), and the outer wall of the joint shaft (316) is rotatably connected to a compacting wheel (317).

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