A snow-removing roller without support wheels

Abstract

The utility model belongs to the technical field of snow removing roller brush, especially a snow removing roller brush without supporting wheel, a snow removing roller brush without supporting wheel, including the connecting frame, the deflection frame, two groups of rotating frame's both ends are respectively hinged in the connecting frame and the deflection frame, the cylinder body and telescopic link of lift cylinder are respectively hinged in the connecting frame and the deflection frame, the vice beam assembly is horizontally rotatably connected on the deflection frame, the cylinder body and telescopic link of deflection cylinder are respectively hinged in the deflection frame and the vice beam assembly, the girder assembly is longitudinally rotatably connected on the vice beam assembly, the roller brush shield assembly is fixedly connected on the girder assembly, the roller core assembly is arranged on the roller brush shield assembly, and the drive system drives the roller core assembly to rotate, further including the profiling telescopic mechanism that can realize the roller core assembly road surface profiling that is arranged on the vice beam assembly and the girder assembly, two groups of profiling telescopic mechanisms are symmetrically arranged, the utility model discloses simple structure can realize road surface profiling and shock attenuation.

Description

Technical Field

[0001] This utility model belongs to the field of snow removal roller brush technology, and particularly relates to a snow removal roller without support wheels. Background Technology

[0002] With economic and social development, winter rain and snow greatly affect people's travel convenience. When there is heavy snow accumulation, airports and municipal sanitation departments often use snow removal rollers for snow removal. Most snow removal rollers now have high-speed support wheels, such as the Chinese utility model patent with authorization announcement number CN219059895U entitled "A High-Speed ​​Snow Removal Roller Brush," and the Chinese utility model patent with authorization announcement number CN222065316U entitled "A Dual-Sided Driven Self-Powered Snow Removal Roller Brush," both of which are equipped with support tires. Because of the support tires, matching components are required, making the mechanism complex, maintenance and repair extremely inconvenient, and the cost of use high.

[0003] Furthermore, in the aforementioned prior art, the buffer structure for the roller brush assembly is mostly a floating structure. For example, the Chinese utility model patent with authorization announcement number CN222313899U, entitled "A Single-Motor Driven Snow Removal Roller Brush," connects the oil inlet and outlet of the lifting cylinder when in floating snow removal mode. When the roller core needs to be in a forced downward snow removal state, the hydraulic valve group disconnects the oil inlet and outlet of the lifting cylinder. Although this allows the roller brush assembly to float up and down, when the ground is tilted, has a slope, or has an obstacle on one side, this structure lacks road surface contouring capabilities and cannot perform snow removal according to the actual road conditions. Consequently, some snow on the road surface cannot be completely cleared. When the road surface continues to tilt, the bristles on one side of the snow removal roller will experience excessive wear.

[0004] Furthermore, when the bristles of the snow removal roller are worn down, the existing snow removal roller brush lacks a corresponding bristle compensation mechanism, resulting in poor snow removal performance. Utility Model Content

[0005] To address at least one technical problem existing in the prior art, this application provides a supportless snowplow with a simple structure that can achieve road surface conforming and shock absorption.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A supportless snowplow includes a connecting frame and a deflecting frame. Two sets of rotating frames, arranged parallel vertically, are hinged at both ends to the connecting frame and the deflecting frame, respectively. The cylinder body and telescopic rod of a lifting cylinder are hinged to the connecting frame and the deflecting frame, respectively. A sub-beam assembly is horizontally rotatably connected to the deflecting frame, and the cylinder body and telescopic rod of the deflecting cylinder are hinged to the deflecting frame and the sub-beam assembly, respectively. A main beam assembly is longitudinally rotatably connected to the sub-beam assembly. A roller brush cover assembly is fixedly connected to the main beam assembly. A roller core assembly is mounted on the roller brush cover assembly, and a drive system drives the roller core assembly to rotate. The snowplow also includes a contouring telescopic mechanism mounted on the sub-beam assembly and the main beam assembly, capable of contouring the roller core assembly to the road surface. Two sets of the contouring telescopic mechanism are symmetrically arranged.

[0007] Preferably, it also includes a brush compensation mechanism disposed on the connecting frame and the deflection frame for compensating for wear of the brush bristles of the roller assembly.

[0008] Preferably, the rotating frame includes two parallel hinge plates and a connecting plate that is fixedly connected to the two hinge plates. The hinge plates and the connecting plate are respectively hinged to the connecting frame and the deflection frame by a pin structure.

[0009] Preferably, the contour telescopic mechanism includes hinge seats fixedly connected to the sub-beam assembly and the main beam assembly respectively, a slide rod and a slide sleeve respectively hinged to the two hinge seats, the slide rod being slidably inserted into the slide sleeve, and a buffer spring for buffering the slide rod when it slides in the slide sleeve.

[0010] Preferably, a slide rod limiting plate is fixedly connected to the slide rod, a slide sleeve limiting plate is fixedly connected to the outer circumference of the slide sleeve, and a buffer spring is sleeved on the slide rod and slide sleeve between the slide rod limiting plate and the slide rod limiting plate.

[0011] Preferably, the brush compensation mechanism includes fixed plates symmetrically fixedly connected to the cylinder body of the lifting cylinder, adjustable and fixedly connected lifting eye bolts in each fixed plate, and tension springs that can be rotatably hung on the lifting eye bolts and the deflection frame at both ends.

[0012] Preferably, the eye bolt is slidably inserted into the fixed plate, and an adjusting nut is threaded onto the eye bolt on the side of the fixed plate opposite to the tension spring. A rotating plate is rotatably connected to the deflection frame, and the two ends of the tension spring are respectively hung in the eye bolt and the rotating plate.

[0013] Preferably, a lock nut is threaded onto the eye bolt on the side facing the fixing plate of the tension spring.

[0014] Preferably, the roller brush cover assembly includes a fixed cover and an adjustable cover. The fixed cover is fixedly connected to the main beam assembly, and the adjustable cover is rotatably connected to the fixed cover via a hinge shaft. The adjustable cover has several adjusting through holes, and the fixed cover has a fixed through hole. The fixed through hole and the adjusting through hole are located on a circumference with the axis of the hinge shaft as the center. An adjusting bolt passes through a certain adjusting through hole and a fixed through hole, and the fixed cover and the adjustable cover are fixedly connected by an adjusting nut.

[0015] Preferably, a hanging lug is fixedly connected to the connecting frame.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model achieves forced downward pressure on the roller assembly and automatic adjustment of the ground pressure by setting a parallel four-bar structure consisting of a connecting frame, two rotating frames and a deflection frame, ensuring motion balance and keeping the roller brush parallel to the ground in any position; by setting a lifting cylinder, the roller assembly can be raised and lowered; by setting a deflection cylinder, the roller assembly can be deflected horizontally.

[0017] 2. This utility model designs the main beam assembly to be longitudinally deflectable relative to the sub-beam assembly and sets up a contour-following telescopic mechanism, thereby enabling the roller brush assembly to adapt to different road surfaces and achieve road surface contour-following function. This effectively prevents excessive wear of the brush bristles on one side of the roller brush assembly due to road conditions during snow sweeping, and effectively improves its service life.

[0018] 3. By setting up a bristle compensation mechanism, when the bristles of the roller assembly are worn, the roller assembly can be lowered from the set position by adjusting the bristle compensation mechanism, so that the worn bristles can continue to sweep snow efficiently. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model.

[0020] Figure 2 For based on Figure 1 A schematic diagram of the rear view structure.

[0021] Figure 3 for Figure 2 A magnified structural diagram at point A.

[0022] Figure 4 For based on Figure 1 A schematic diagram of the right-side structure.

[0023] Figure 5 for Figure 4 A magnified structural diagram at point B.

[0024] Figure 6 Based on Figure 4 A top-view structural diagram.

[0025] Figure 7 This is a schematic diagram of the rotating frame according to an embodiment of the present invention.

[0026] Figure 8 This is a schematic diagram of the structure of the roller brush cover assembly according to an embodiment of the present utility model.

[0027] In the diagram: 1. Connecting frame; 11. Hanging lug; 12. Lifting cylinder. 2. Deflection frame; 21. Connecting and fixing lug; 22. Deflection cylinder. 3. Rotating frame; 31. Hinge plate; 32. Connecting plate. 4. Sub-beam assembly; 41. Sub-beam fixing lug; 42. Longitudinal connecting column. 5. Main beam assembly; 51. Horizontal connecting column; 6. Brush roller cover assembly; 61. Brush roller assembly; 62. Drive system; 63. Fixed cover; 631. Fixed through hole; 64. Adjustable cover; 641. Adjustable through hole; 65. Hinge shaft; 66. Adjusting bolt; 67. Adjusting nut. 7. Contour-following telescopic mechanism; 71. Hinge seat; 72. Slide rod; 73. Sliding sleeve; 74. Buffer spring; 75. Slide rod limiting plate; 76. Sliding sleeve limiting plate. 8. Brush compensation mechanism; 81. Fixing plate; 82. Lifting eye bolt; 83. Tension spring; 84. Adjusting nut; 85. Rotating plate; 86. Locking nut. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example 1

[0030] See appendix Figure 1 ,2 As shown in Figures 4 and 6, a snowplow without support wheels includes a connecting frame 1. The connecting frame 1 can be an existing rectangular frame structure. In this embodiment, in order to facilitate fixing the connecting frame 1 to an existing snowplow, thereby facilitating the fixed installation of the snowplow on the snowplow, two hanging ears 11 are welded on the connecting frame 1. The connecting frame 1 can be fixedly hung on the existing snowplow through the hanging ears 11.

[0031] This snowplow without support wheels also includes a deflector frame 2. In this embodiment, the deflector frame 2 can be a vertically arranged U-shaped structure. The U-shaped opening of the deflector frame 2 faces the connecting frame 1. The two ends of the two sets of rotating frames 3 are respectively hinged to the connecting frame 1 and the deflector frame 2 through existing pin structures. The two sets of rotating frames 3 are arranged parallel to each other vertically.

[0032] See Figure 7 As shown, the rotating frame 3 includes two parallel hinge plates 31 and a connecting plate 32 that is fixedly connected to the two hinge plates. The connecting plate 32 is integrally formed with the two hinge plates 31. The two hinge plates 31 and the connecting plate 32 are respectively hinged to the connecting frame 1 and the deflecting frame 2 by a pin structure. Thus, the vertically arranged connecting frame 1, the two rotating frames 3, and the vertically arranged deflecting frame 2 form a parallel four-bar linkage structure, ensuring that the deflecting frame 2 is always vertical. Compared with the existing structure of the roller brush with a support wheel, this structure is simpler, easier to maintain and repair, and has a lower operating cost.

[0033] In order to achieve the lifting and lowering of the deflection frame 2, the cylinder body and telescopic rod of the lifting cylinder 12 are respectively connected to the connecting frame 1 and the deflection frame 2 through the existing pin structure. When the telescopic rod of the lifting cylinder 12 extends and retracts, it can drive the rotating frame 3 to deflect, thereby driving the deflection frame 2 to move up and down.

[0034] See Figure 4 As shown, a sub-beam assembly 4 is horizontally rotatably connected to the deflection frame 2. The sub-beam assembly 4 is horizontally set, and a sub-beam fixing lug 41 is horizontally welded to the upper end of the sub-beam assembly 4. A connecting fixing lug 21 is horizontally welded to the end face of the deflection frame 2 on the side away from the connecting frame 1. The connecting fixing lug 21 and the sub-beam fixing lug 41 are rotatably connected by a vertically set longitudinal connecting column 42. The two ends of the longitudinal connecting column 42 are riveted to prevent the longitudinal connecting column 42 from detaching from the connecting fixing lug 21 and the sub-beam fixing lug 41.

[0035] See Figure 6 As shown, in order to enable the sub-beam assembly 4 to deflect left and right about the longitudinal connecting column 42, in this embodiment, the cylinder body and telescopic rod of the horizontally arranged deflection cylinder 22 are respectively hinged to the deflection frame 2 and the sub-beam assembly 4; when the telescopic rod of the deflection cylinder 22 extends and retracts, it can drive the sub-beam assembly 4 to deflect horizontally, and then drive the sub-beam assembly 4 to deflect left and right to make swinging motion.

[0036] See Figure 4 As shown, a main beam assembly 5 is longitudinally rotatably connected to the sub-beam assembly 4. The upper end of the main beam assembly 5 is rotatably connected to the sub-beam assembly 4 through a horizontally set horizontal connecting column 51. Similarly, in order to prevent the horizontal connecting column 51 from detaching from the sub-beam assembly 4 and the main beam assembly 5, the two ends of the horizontal connecting column 51 are riveted structures, and the horizontal connecting column 51 is set in the middle position of the main beam assembly 5.

[0037] The roller brush cover assembly 6 is fixedly connected to the main beam assembly 5 by bolts. The existing roller core assembly 61 is rotatably connected to the roller brush cover assembly 6. The existing drive system 62, such as a hydraulic motor or drive motor, drives the roller core assembly 61 to rotate. Brush bristles are fixedly installed on the roller core assembly 61. When the roller core assembly 61 rotates, it can drive the brush bristles to rotate, and the brush bristles can sweep away the snow on the road.

[0038] Therefore, with the above structure, when the road surface is tilted or encounters an obstacle, this utility model can achieve longitudinal deflection of the roller core assembly 61, compared with the existing snow removal roller brush that can only float up and down to adapt to the tilted road surface and avoid obstacles, so as to better achieve road surface conformity and avoid obstacles, thereby making the wear of the brush bristles uniform.

[0039] In order to make the core assembly 61 and the main beam assembly 5 more stable and improve the shock absorption effect when they deflect relative to the sub-beam assembly 4, in this embodiment, a contouring telescopic mechanism 7 is provided on the sub-beam assembly 4 and the main beam assembly 5 to realize the road surface contouring of the core assembly 61. The contouring telescopic mechanism 7 is provided in two sets and is symmetrically arranged with horizontal connecting columns 51.

[0040] See Figure 5 As shown, the contour telescopic mechanism 7 includes hinge seats 71 welded to the sub-beam assembly 4 and the main beam assembly 5 respectively. A slide rod 72 and a slide sleeve 73 are respectively hinged to the two hinge seats 71 by a pin structure. The slide rod 72 can slide through the slide sleeve 73. One end of the slide rod 72 is hinged to the hinge seat 71 on the main beam assembly 5, and one end of the slide sleeve 73 is hinged to the hinge seat 71 on the sub-beam assembly 4.

[0041] The contour telescopic mechanism 7 also includes a buffer spring 74 for buffering the sliding rod 72 when it slides within the sliding sleeve 73. In one embodiment, the buffer spring 74 may be disposed within the sliding sleeve 73 and abut against the end of the sliding rod 72 within the sliding sleeve 73. In this embodiment, a sliding rod limiting plate 75 is welded onto the sliding rod 72, and a sliding sleeve limiting plate 76 is welded onto the outer circumference of the sliding sleeve 73. The buffer spring 74 is sleeved on the sliding rod 72 and the sliding sleeve 73 between the sliding rod limiting plate 75 and the sliding rod limiting plate 76.

[0042] The working principle and process of this embodiment are as follows: Install each component according to the above instructions, such as Figure 1As shown, the lug 11 is then hung on an existing snowplow vehicle, thereby fixing the snowplow without support wheels onto the snowplow vehicle. The operator controls the existing central control system to extend or retract the telescopic rod of the deflection cylinder 22, thereby driving the main beam assembly 5, the brush guard assembly 6, and the core assembly 61 to deflect to a set angle in the horizontal direction. The operator controls the existing central control system to retract the telescopic rod of the lifting cylinder 12, thereby driving the rotating frame 3 to rotate, which in turn drives the deflection frame 2, the sub-beam assembly 4, the main beam assembly 5, the roller brush cover assembly 6, and the roller core assembly 61 to move downwards until the set width of the brush bristles contacting the road surface is reached. The drive system 62 drives the roller assembly 61 to rotate, thereby driving the brush bristles on the roller assembly 61 to rotate, and the rotating brush bristles sweep the snow on the road surface to one side of the road surface. When the road surface is inclined or an obstacle is encountered on one side, the roller assembly 61 will automatically deflect around the longitudinal connecting column 42 according to the road surface inclination and the height of the obstacle, thereby achieving the road surface contouring function, better clearing snow accumulation and avoiding severe wear of the brush bristles on one side; in addition, by setting a buffer spring, the roller assembly 61 is buffered and shock-absorbing for reciprocating deflection. Example 2

[0043] See appendix Figure 1 , 2 As shown in Figure 6, this embodiment is a further improvement on the basis of embodiment 1. The difference between this embodiment and embodiment 1 is that a brush bristle compensation mechanism 8 for compensating for the wear of the brush bristles of the roller core assembly 61 and an adjustable roller brush cover assembly 6 structure are added.

[0044] The brushing compensation mechanism 8 is installed on the connecting frame 1 and the deflection frame 2. The brushing compensation mechanism 8 includes a fixed plate 81 symmetrically welded on the cylinder body of the lifting cylinder 12, a lifting eye bolt 82 that can be adjusted and fixedly connected in each fixed plate 81, and a tension spring 83 that can be rotatably hung on the lifting eye bolt 82 and the deflection frame 2 at both ends.

[0045] In one embodiment, the eye bolt 82 is threaded into the fixed plate 81. By rotating the eye bolt 82, the tension of the tension spring 83 can be adjusted. Since the end of the tension spring 83 near the deflection frame 2 is higher than the end near the connecting frame 1, when the tension of the tension spring 83 is increased, i.e., further tightened, the deflection frame 2, the sub-beam assembly 4, the main beam assembly 5, the brush guard assembly 6, and the core assembly 61 can be driven to move downward to a set position so that the worn brush bristles maintain the same ground width.

[0046] See Figure 3As shown, further in this embodiment, for convenient adjustment of the bristle compensation mechanism 8, the eye bolt 82 is slidably inserted into the fixed plate 81. An adjusting nut 84 is threaded onto the eye bolt 82 on the side of the fixed plate 81 opposite to the tension spring 83. A rotating plate 85 is rotatably connected to the deflection frame 2. The two ends of the tension spring 83 are respectively hung in the eye of the eye bolt 82 and in the rotating plate 85. Thus, by tightening and loosening the adjusting nut 84, the length of the eye bolt 82 extending into the fixed plate 81 can be adjusted, thereby adjusting the tension of the tension spring 83. When the bristles wear down, the tension of the tension spring 83 increases, i.e., it is further tightened, which can drive the deflection frame 2, the sub-beam assembly 4, the main beam assembly 5, the roller brush cover assembly 6, and the roller core assembly 61 to move downward to a set position, so that the worn bristles maintain the same ground width.

[0047] Furthermore, in order to lock the relative positions of the eye bolt 82 and the adjusting nut 84, a locking nut 86 is threaded onto the eye bolt 82 on the side of the fixing plate 81 facing the tension spring 83. The fixing plate 81 is clamped by the locking nut 86 and the adjusting nut 84, thereby fixing the position of the eye bolt 82.

[0048] Furthermore, in order to adjust the angle between the roller brush cover assembly 6 and the roller core assembly 61 when the brush bristles wear down, so that the snow kicked up by the brush bristles can be moved to the roadside under the guidance of the roller brush cover assembly 6, in this embodiment, the roller brush cover assembly 6 is a split structure and can be angled.

[0049] See Figure 8 As shown, specifically, the roller brush cover assembly 6 includes a fixed cover 63 and an adjustable cover 64. The fixed cover 63 is fixedly connected to the main beam assembly 5 by bolts, and the adjustable cover 64 is rotatably connected to the fixed cover 64 by a hinge shaft 65, which is a conventional riveting structure. Several adjusting through holes 641 are provided on the adjustable cover 64, and a fixed through hole 631 is provided on the fixed cover 63. The fixed through holes 631 are parallel to the axis of the hinge shaft 65. The fixed through holes 631 and adjusting through holes 641 are located on a circle centered on the axis of the hinge shaft 65. Adjusting bolts 66 pass through a certain adjusting through hole 641 and a fixed through hole 631, and the fixed cover 63 and the adjustable cover 64 are fixedly connected by adjusting nuts 67.

[0050] The working principle and process of this embodiment are as follows: Install each component according to the above instructions, such as Figure 1 As shown, the lug 11 is then hung on an existing snowplow vehicle, thereby fixing the snowplow without support wheels onto the snowplow vehicle. The operator controls the existing central control system to extend or retract the telescopic rod of the deflection cylinder 22, thereby driving the main beam assembly 5, the brush guard assembly 6, and the core assembly 61 to deflect to a set angle in the horizontal direction. The operator controls the existing central control system to retract the telescopic rod of the lifting cylinder 12, thereby driving the rotating frame 3 to rotate, which in turn drives the deflection frame 2, the sub-beam assembly 4, the main beam assembly 5, the roller brush cover assembly 6, and the roller core assembly 61 to move downwards until the set width of the brush bristles contacting the road surface is reached. The drive system 62 drives the roller assembly 61 to rotate, thereby driving the brush bristles on the roller assembly 61 to rotate, and the rotating brush bristles sweep the snow on the road surface to one side of the road surface. When the road surface is sloping or an obstacle is encountered on one side, the roller assembly 61 will automatically deflect around the longitudinal connecting column 42 according to the road surface slope and the height of the obstacle, thereby achieving the road surface contouring function, better clearing snow and avoiding severe wear of the brush bristles on one side; in addition, by setting a buffer spring, the roller assembly 61 is buffered and shock-absorbing for reciprocating deflection. When the bristles of the roller assembly 61 are worn, loosen the locking nut 86 and further tighten the adjusting nut 84 to increase the tension of the tension spring 83. During this process, the tension spring 83 can drive the deflection frame 2, the sub-beam assembly 4, the main beam assembly 5, the roller brush cover assembly 6, and the roller assembly 61 to move downward to the set position so that the worn bristles maintain the same ground width. Then tighten the locking nut 86. When it is necessary to adjust the angle of the roller brush cover assembly, remove the adjusting nut 67 and adjusting bolt 66, rotate the adjusting cover 64 to align the designated adjusting through hole 641 on the adjusting cover with the fixed through hole 631, then insert the adjusting bolt 6 into the adjusting through hole 641 and the fixed through hole 631, and thread the adjusting nut 67 onto the adjusting bolt 6 to fix the angle between the adjusting cover 64 and the fixed cover 63.

[0051] It should be noted that this embodiment also requires a hydraulic station and its supporting pipelines and solenoid valves, as well as other structures related to the snow removal roller brush. These are all existing technologies and will not be described in detail here, as long as they can meet the above requirements.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A snowplow without support wheels, comprising a connecting frame, characterized in that: It also includes a deflection frame, with the two ends of two sets of rotating frames arranged in parallel at the top and bottom respectively hinged to the connecting frame and the deflection frame, and the cylinder body and telescopic rod of the lifting cylinder respectively hinged to the connecting frame and the deflection frame; A sub-beam assembly is horizontally rotatably connected to the deflection frame, and the cylinder body and telescopic rod of the deflection cylinder are respectively hinged to the deflection frame and the sub-beam assembly; A main beam assembly is rotatably connected longitudinally to the sub-beam assembly, a brush guard assembly is fixedly connected to the main beam assembly, a core assembly is mounted on the brush guard assembly, and a drive system drives the core assembly to rotate. It also includes a contouring telescopic mechanism that can realize the road surface contouring of the core assembly, which is installed on the sub-beam assembly and the main beam assembly. Two sets of the contouring telescopic mechanism are symmetrically arranged.

2. The snowplow without support wheels according to claim 1, characterized in that: It also includes a brush compensation mechanism disposed on the connecting frame and the deflection frame for compensating for wear of the brush bristles of the roller assembly.

3. A snowplow without support wheels according to claim 1, characterized in that: The rotating frame includes two parallel hinge plates and a connecting plate that is fixedly connected to the two hinge plates. The hinge plates and the connecting plate are respectively hinged to the connecting frame and the deflection frame by a pin structure.

4. A snowplow without support wheels according to claim 1, characterized in that: The contour-following telescopic mechanism includes hinge seats that are fixedly connected to the sub-beam assembly and the main beam assembly respectively, a slide rod and a slide sleeve that are hinged to the two hinge seats respectively, the slide rod being slidably inserted into the slide sleeve, and a buffer spring for buffering the slide rod when it slides in the slide sleeve.

5. A snowplow without support wheels according to claim 4, characterized in that: A slide rod limiting plate is fixedly connected to the slide rod, and a slide sleeve limiting plate is fixedly connected to the outer circumference of the slide sleeve. A buffer spring is sleeved on the slide rod and slide sleeve between the slide rod limiting plate and the slide rod limiting plate.

6. A snowplow without support wheels according to claim 2, characterized in that: The brush compensation mechanism includes fixed plates symmetrically fixedly connected to the cylinder body of the lifting cylinder, adjustable and fixedly connected eye bolts in each fixed plate, and tension springs that can be rotatably hung on the eye bolts and deflection frame at both ends.

7. A snowplow without support wheels according to claim 6, characterized in that: The eye bolt is slidably inserted into the fixed plate. An adjusting nut is threaded onto the eye bolt on the side of the fixed plate opposite to the tension spring. A rotating plate is rotatably connected to the deflection frame. The two ends of the tension spring are respectively hung in the eye bolt and the rotating plate.

8. A snowplow without support wheels according to claim 7, characterized in that: A lock nut is threaded onto the eye bolt on the side of the fixing plate facing the tension spring.

9. A snowplow without support wheels according to claim 1, characterized in that: The roller brush cover assembly includes a fixed cover and an adjustable cover. The fixed cover is fixedly connected to the main beam assembly, and the adjustable cover is rotatably connected to the fixed cover via a hinge shaft. The adjustable cover has several adjusting through holes, and the fixed cover has a fixed through hole. The fixed through hole and the adjusting through hole are located on a circle with the axis of the hinge shaft as the center. An adjusting bolt passes through a certain adjusting through hole and a fixed through hole, and the fixed cover and the adjustable cover are fixedly connected by an adjusting nut.

10. A snowplow without support wheels according to claim 1, characterized in that: A hanging lug is fixedly connected to the connecting frame.

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