Automatic lifting mechanism of main brush side stop of snow and road sweeping vehicle

Abstract

The utility model discloses an automatic lifting mechanism of the side stop of the main brush of a road and snow sweeper, which mainly comprises a lever pull wire (16), a lever (17), a lever jacking plate (18), a lever support (19), a main brush hinged shaft (11), a main brush cover (12) and a main brush frame (13), and can realize the automatic lifting of the side stop device of the main brush.

Description

Technical fields:

[0001] An automatic lifting mechanism for the main brush side guard of a snow sweeper / road sweeper belongs to the fields of road sweeping machinery and snow removal machinery, and particularly relates to a mechanism that can realize the automatic lifting of the side guard device. Background technology:

[0002] Snow sweeper trucks typically require side guard mechanisms installed on both sides of the main brush. When the roller brush is sweeping, the sliding blocks of the side guards adapt well to and conform to the road surface, increasing the sweeping efficiency of the main brush. However, when the sweeping task is complete and the main brush needs to be lifted off the road, the side guard mechanisms, lacking a separate lifting mechanism, will sag under their own weight, approaching the road surface. This could cause the side guard mechanisms to collide with the road surface and be damaged during vehicle operation, which is unacceptable. Therefore, it is necessary to invent an automatic lifting device. When the sweeping task is complete and the main brush needs to be lifted off the road, the side guard mechanisms should also be lifted to a suitable height simultaneously. When the sweeping task begins again, as the main brush is lowered from its height to the road surface, the side guard mechanisms should also be automatically lowered to the road surface, thus completing the sweeping work. Summary of the Invention:

[0003] Given the relatively light weight of the main brush side guard mechanism, we did not want to add a dedicated hydraulic cylinder to lift and lower the main brush side guard mechanism. Instead, we wanted to use the action of the main brush lifting hydraulic cylinder to achieve the passive lifting and lowering function of the main brush side guard mechanism.

[0004] The technical solution is as follows:

[0005] An automatic lifting mechanism for the main brush side guard of a road sweeper and snow sweeper mainly consists of: a side guard counterweight plate 6, a lever cable 16, a lever 17, a lever lifting plate 18, a lever bracket 19, a main brush hinge shaft 11, a main brush cover 12, and a main brush frame 13. The lever 17 is hinged to the lever bracket 19, the upper end of the lever cable 16 is connected to one end of the lever 17, and the other end is connected to the side guard counterweight plate 6. The lever lifting plate 18 is fixed to the main brush suspension upright bracket 23 above the main brush hinge shaft 11.

[0006] The automatic lifting mechanism of the main brush side guard of the road sweeper and snow sweeper is characterized in that: when the main brush is lifted upward by the main brush lifting cylinder 20, the included angle A21 will become smaller and smaller. When it is reduced to an acute angle, the lever active end 22 will gradually approach the lever lifting plate 18 until it touches the lever lifting plate 18. At this time, the main brush is lifted upward by the main brush lifting cylinder 20, and the lever active end 22 will be pressed downward by the lever lifting plate 18. The lever 17 will rotate, driving the lever pull line 16 to move upward. The lower part of the lever pull line 16 is connected to the side guard counterweight plate 6. The lever pull line 16 will pull the side guard counterweight plate 6 to swing upward around the side guard hinge point 7 as the center, thereby lifting the ground-moving material slider 1 connected to the side guard counterweight plate 6 from the road surface.

[0007] The automatic lifting mechanism of the main brush side guard of the road sweeper and snow sweeper is characterized in that: the included angle A21 refers to the included angle formed between the hinge point of the main brush suspension upright bracket 23, the main brush hinge shaft 11, and the lever bracket 19.

[0008] The advantages of this solution compared to existing technologies are:

[0009] 1. This technical solution cleverly utilizes the principle that when the main brush is lifted upward by the main brush lifting cylinder 20, the included angle A21 will become smaller and smaller, and when the included angle A21 decreases to an acute angle, the distance between the two points on the two sides of the included angle A21 will become closer and closer.

[0010] 2. It cleverly applies the lever principle: when one end of the lever is pressed down, the other end will rise up, and vice versa.

[0011] 3. No additional hydraulic cylinder is needed. The lifting and lowering of the main brush side guard is achieved solely by the action of the main brush lifting hydraulic cylinder 20. It has good reliability, simple structure, and functions that fully meet the design requirements. Attached image description:

[0012] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention installed on the main brush.

[0014] Figure 2 A partial schematic diagram of the lever and its associated mechanism.

[0015] Figure 3 Schematic diagram of included angle A 21

[0016] The attached figures are labeled as follows:

[0017] 1----Mopping material slider; 2----Balance slider; 3----Follow-up balance plate; 4----Hinge point A; 5----Side guard upright plate; 6----Side guard counterweight plate; 7-Side guard hinge point;

[0018] 8----Side guard counterweight plate limiting slide groove; 9----Limit block; 10----Brush bristles; 11----Main brush hinge shaft;

[0019] 12----Main brush cover; 13----Main brush holder; 14----Mounting base plate;

[0020] 16-----Lever pull line; 17-----Lever; 18----Lever lifting plate;

[0021] 19-----Lever bracket; 20-----Main brush lifting cylinder; 21-----Angle A;

[0022] 22------Lever active end; 23-----Main brush suspension upright bracket; 24-----Main brush drive motor. Detailed implementation method:

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Generally, the components of this embodiment described and shown in these drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate embodiments of this application. Other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are all within the protection scope of this application.

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. A preferred embodiment of the automatic lifting mechanism for the main brush side guard of the road sweeper and snowplow is as follows:

[0025] The lever lifting plate 18 is an iron plate welded to the main brush suspension upright bracket 23. It is located above the main brush hinge shaft 11 and has high structural strength. When the main brush needs to be placed on the road surface during snow removal operations or when the main brush is lifted off the road surface after snow removal operations are completed, the lever lifting plate 18 will not move no matter how the main brush frame 13 rotates around the main brush hinge shaft 11.

[0026] The main brush holder 13 is hinged to the main brush suspension bracket 23 via the main brush hinge shaft 11.

[0027] The upper end of the main brush lifting cylinder 20 is hinged to the main brush suspension upright bracket 23, and the lower end is hinged to the main brush frame 13.

[0028] When the main brush lifting cylinder 20 extends and retracts, causing the main brush frame 13 to swing up and down around the main brush hinge shaft 11, the lever lifting plate 18 remains stationary.

[0029] The mounting base plate 14 is welded onto the main brush frame 13, and the main brush cover 12 is fixed onto the main brush frame 13 with screws. When the main brush lifting cylinder 20 extends and retracts, it drives the main brush frame 13 to swing up and down around the main brush hinge shaft 11, and the main brush cover 12, which is integrated with the main brush frame 13, moves synchronously at the same time.

[0030] The lever bracket 19 is welded to the main brush cover 12.

[0031] The end of lever 17 closest to lever lifting plate 18 is lever active end 22. Lever active end 22 is shaped like an arc with a certain angle. This arc-shaped lever active end 22 allows lever 17 to move smoothly when it approaches and presses against lever lifting plate 18.

[0032] The lever pull line 16 is a thin steel wire rope, with both ends fixed to the other end of the lever 17 and the earring welded on the side guard counterweight plate 6 by steel wire rope clips.

[0033] II. This article further elaborates on the preferred implementation method and working principle of the main brush side guard:

[0034] ① The shape of the floor-mounted baffle slider 1 is as follows: Figure 2 The shape shown is preferably made of rubber or polyurethane.

[0035] ② The shape of the balance slider 2 is as follows: Figure 3 The shape shown is preferably made of rubber or polyurethane.

[0036] ③ The material of the follow-up balance plate 3 is iron plate. There is a row of holes on the bottom for fixing the floor baffle slider 1 and the balance slider 2, and there is a hinge point A4 on the top for hinged with the side baffle plate 4.

[0037] ④ The side guard plate 5 is made of rubber or polyurethane material. There is a hinge seat installed at the bottom of the side guard plate 5 and holes at the top for fixing to the side guard counterweight plate 6.

[0038] ⑤ The mopping baffle slider 1 and the balance slider 2 are respectively fixed to the holes on the follow-up balance plate 3 with screws. Then, the mechanism that fixes the three together is connected to the hinge seat installed on the lower part of the side baffle plate 5 by bolts through the hinge point A4. The tightness of the bolt connection should ensure that the mopping baffle slider 1 can rotate freely around the hinge point A4.

[0039] ⑥ The side guard counterweight plate 6 is made of iron plate, and has holes for hinged to the side guard hinge point 7, as well as a side guard counterweight plate limiting slide groove 8, which is an arc-shaped hollow structure.

[0040] ⑦ The limiting block 9 is a bolt. This bolt passes through the limiting groove 8 of the side counterweight plate and is fixed to the mounting base 14 welded to the main brush frame 13. The diameter of the mounting nut portion of this bolt is larger than the width of the arc-shaped hollow groove of the limiting groove 8 of the side counterweight plate. After the nut is installed, it can both block both sides of the limiting groove 8 of the side counterweight plate, preventing the side counterweight plate 6 from falling off the limiting block 9, and allow the side counterweight plate 6 to rotate freely around the side hinge point 7. The arc length of the limiting groove 8 of the side counterweight plate is the vertical travel of the side counterweight plate 6.

[0041] ⑧. The side guard counterweight plate 6 is hinged to the mounting base plate 14 via the side guard hinge point 7. A nut is tightened on the side guard hinge point 7 to prevent the side guard counterweight plate 6 from falling off. Even under axial force, it will not fall off due to the nut's resistance. Furthermore, a gap remains between the nut and the side guard counterweight plate 6 after tightening, allowing the side guard counterweight plate 6 to rotate around the side guard hinge point 7.

[0042] ⑨ The lifting and lowering of the main brush holder 13 is based on the swinging motion of the main brush hinge shaft 11 as the center.

[0043] ⑩ The working principle of the main brush side guard is:

[0044] Regardless of the length of the bristles 10 of the main brush, as long as the bristles 10 need to contact the road surface to start sweeping, the side guard counterweight plate 6 will rotate downward around the side guard hinge point 7 under the action of gravity. When any end of the mopping material blocking slider 1 finally connected to the side guard counterweight plate 6 contacts the road surface, since the mopping material blocking slider 1 is also hinged to the side guard upright plate 5, the downward pressure of the gravity of the side guard counterweight plate 6 causes the mopping material blocking slider 1 to rotate around the hinge point A4 until the bottom surface of the mopping material blocking slider 1 is completely pressed against the road surface. The supporting force exerted by the road surface on the bottom surface of the mopping material blocking slider 1 supports the side guard mechanism of the main brush of the snow sweeper and road sweeper, preventing it from sinking, thus perfectly realizing the work of blocking snow and garbage from the side.

[0045] When the bristles 10 wear down during operation and shorten further, the road surface will lift the mopping block slider 1 upward. Since there are two hinge points, it is not only allowed to be lifted, but also the perfect combination between the mopping block slider 1 and the road surface can be achieved again by changing the hinge angle at hinge point A4.

[0046] When the road surface encounters undulations, under the gravity of the side guard counterweight plate 6, the hinge angle of the dragging material slider 1 at hinge point A4 and the hinge angle between the side guard counterweight plate 6 and the mounting base plate 14 change accordingly. The changes in these two hinge angles are adaptive and random, ensuring that the dragging material slider 1 can perfectly fit the road surface regardless of whether the road surface is undulating.

[0047] The inner side of the mopping bristle slider 1 is closely attached to the bristles 10 with almost no gap. Moreover, the side near the bristles 10 has a guide angle, which allows materials such as ice, snow, and garbage located in front of the roller brush to be pushed towards the bristles 10 of the main brush by the mopping bristle slider 1 with the guide angle during the main brush's forward sweeping of the road surface, thereby achieving cleaning by the main brush.

[0048] After the snow, garbage, and other materials thrown forward by the main brush land, they are pushed back to the brush bristles 10 by the guide angled mopping bristle slider 1 and swept away again, thus solving the problem of scattering to both sides of the main brush.

[0049] The working principle of the automatic lifting mechanism of the main brush side guard of the road sweeper and snow sweeper is as follows:

[0050] When the main brush holder 12 is lifted upward by the main brush lifting cylinder 20, the main brush holder 12 rotates upward about the main brush hinge shaft 11. At this time, the lever bracket 19 installed on the main brush cover 12, which is fixed together with the main brush holder 12, also rotates upward about the main brush hinge shaft 11. This rotation causes the included angle A21 formed between the main brush suspension upright bracket 23 and the hinge point of the main brush hinge shaft 11 and the lever bracket 19 to change, and the included angle decreases.

[0051] When the angle A21 formed by the three points of the main brush suspension upright bracket 23, the main brush hinge shaft 11, and the lever bracket 19 is an acute angle, when the main brush frame 12 is lifted upward by the main brush lifting cylinder 20, the lever active end 22 of the lever bracket 19 will gradually approach the lever lifting plate 18 until it touches the lever lifting plate 18.

[0052] At this time, the main brush frame 12 continues to be lifted upward by the main brush lifting cylinder 20. The lever active end 22 that is against the lever lifting plate 18 will be pressed downward by the lever lifting plate 18. Under the downward pressure of the lever active end 22, the lever 17 will drive the lever pull line 16 to move upward with the hinge point with the lever bracket 19 as the fulcrum. The lower part of the lever pull line 16 is connected to the side guard counterweight plate 6. The lever pull line 16 will pull the side guard counterweight plate 6 to swing upward with the side guard hinge point 7 as the center, thereby lifting the mopping material slider 1 connected to the side guard counterweight plate 6 from the road surface.

[0053] When the raised mopping slider 1 needs to be lowered to the road surface during snow sweeping, the main brush lifting cylinder 20 drives the main brush frame 12 to rotate downward, and the included angle A21 continuously increases. The lever active end 22 gradually moves away from the lever lifting plate 18 that it is resisting. After the lever active end 22 loses the downward force exerted on it by the lever lifting plate 18, it falls freely to the road surface under the gravity of the side guard counterweight plate 6 and the mechanism connected to it, and begins the road sweeping work.

[0054] Finally, the following points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, internal connections of components, or direct connections. Terms such as "upper", "lower", "left", and "right" are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0055] Secondly, the accompanying drawings of the embodiments disclosed herein only involve structures related to the embodiments of this disclosure. Other structures can be referred to in the usual design. In the absence of conflict, the same embodiment and different embodiments of this application can be combined with each other.

[0056] Finally, the above-described embodiments are merely preferred embodiments of this patent and are not intended to limit this patent. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this patent should be included within the scope of protection of this patent.

Claims

1. A kind of automatic lifting mechanism of main brush side stop of road sweeper, mainly by: side stop counterweight plate (6), lever pull line (16), lever (17), lever jacking plate (18), lever support (19), main brush hinged shaft (11), main brush cover (12), main brush frame (13) are formed, side stop counterweight plate (6) is hinged on installation bottom plate (14) by side stop hinged point (7), installation bottom plate (14) is welded on main brush frame (13), main brush frame (13) is hinged on main brush suspension vertical support (23) by main brush hinged shaft (11), main brush cover (12) is fixed on main brush frame (13) with screw, lever support (19) is welded on main brush cover (12), the end of lever (17) close to lever jacking plate (18) is lever driving end (22), the other end of lever (17) is connected on the ear ring welded on side stop counterweight plate (6) with lever pull line (16), the included angle A (21) formed between main brush suspension vertical support (23) and the hinged point of main brush hinged shaft (11) and lever support (19), it is characterized by: The lever (17) is hinged on the lever support (19), the upper end of the lever pull wire (16) is connected with one end of the lever (17), the other end is connected with the side block counterweight plate (6), and the lever jacking plate (18) is fixed on the main brush suspension vertical support (23) above the main brush hinged shaft (11).

2. The automatic lifting mechanism of the main brush side fender of the road sweeping and snow removing vehicle according to claim 1, characterized in that: When the main brush is lifted upward by the main brush lifting oil cylinder (20), the angle of the included angle A (21) becomes smaller and smaller, when it is reduced to an acute angle, the driving end (22) of the lever gradually approaches the lever jacking plate (18), until it abuts against the lever jacking plate (18), at this time, the main brush is continuously lifted upward by the main brush lifting oil cylinder (20), the driving end (22) of the lever is pressed downward by the lever jacking plate (18), the lever (17) rotates, drives the lever pull wire (16) to move upward, and the lower part of the lever pull wire (16) is connected with the side block counterweight plate (6), so that the lever pull wire (16) pulls the side block counterweight plate (6) to swing upward with the side block hinged point (7) as the center, so as to lift the floor cleaning block (1) connected with the side block counterweight plate (6) from the road surface.

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