Anti-collision sweeping brush mechanism for road sweeper and road sweeper

Abstract

A road sweeper anti-collision sweeping brush mechanism comprises a sweeping brush bracket, a brush plate, a swing arm, a wire pulling mechanism, a longitudinal anti-collision mechanism, a first transverse anti-collision mechanism and a second transverse anti-collision mechanism; one end of the swing arm is hinged to the sweeping brush bracket, and the other end of the swing arm is connected to the brush plate; the wire pulling mechanism is installed on the sweeping brush bracket, and the swing arms on both sides are synchronously retracted inward by the wire pulling mechanism; the longitudinal anti-collision mechanism is installed on the swing arm, and when the brush plate is hit from the front, the longitudinal anti-collision mechanism is used to buffer the brush plate; the first transverse anti-collision mechanism is installed between the sweeping brush bracket and the swing arm, and when the brush plate is hit from the outside, the first transverse anti-collision mechanism is used to buffer the brush plate; the second transverse anti-collision mechanism is installed between the sweeping brush bracket and the swing arm, and when the brush plate is hit from the inside, the second transverse anti-collision mechanism is used to buffer the brush plate. The present invention can reduce the damage to the sweeping brush after collision when the road sweeper is operating in a small space and complex road conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental vehicles, and in particular to a sweeping brush mechanism for a road sweeper. The present invention provides a sweeping brush mechanism capable of preventing collision. Background Art

[0002] Mechanized road cleaning is an important symbol of modern sanitation, and road sweepers are widely used in cleaning urban streets, residential areas, urban parks, campuses, etc. with their small size and flexible steering. Among various road sweepers, the sweeping brush mechanism is an important part of the cleaning operation. In addition to the sweeping brush rotation and sweeping brush width adjustment functions, only a few of the existing road sweeper sweeping brush mechanisms on the market have basic anti-collision functions. Summary of the invention

[0003] According to the existing basic anti-collision function, the anti-collision sweeping brush mechanism of the present invention can swing inwards or outwards to avoid collision when it is hit, and also has a buffer that can be telescoped forwards and backwards.

[0004] The present invention is implemented according to the following technical solutions:

[0005] A road sweeper anti-collision sweeping brush mechanism comprises a sweeping brush bracket and brush plates located at both ends of the sweeping brush bracket; and further comprises:

[0006] A swing arm, one end of which is hinged to the sweeping brush bracket, and the other end of which is connected to the brush plate;

[0007] A wire pulling mechanism, which is installed on the sweeping brush bracket, and the swing arms on both sides are synchronously retracted inwards through the wire pulling mechanism;

[0008] A longitudinal anti-collision mechanism is installed on the swing arm, and when the brush plate is hit from the front, the longitudinal anti-collision mechanism is used to buffer the brush plate;

[0009] A first transverse anti-collision mechanism is installed between the sweeping brush bracket and the swing arm. When the brush plate is hit from the outside, the first transverse anti-collision mechanism is used to buffer the brush plate.

[0010] The second transverse anti-collision mechanism is installed between the sweeping brush bracket and the swing arm. When the brush plate is hit from the inside, the second transverse anti-collision mechanism is used to buffer the brush plate.

[0011] Furthermore, the rear end of the swing arm is connected to the sweeping brush bracket through a pin; the longitudinal anti-collision mechanism includes a sliding arm and a compression spring; the sliding arm is installed at the front end of the swing arm, and the sliding arm is pushed to the position of the limiting mechanism by the compression spring located on the inner side of the swing arm; the brush plate is installed on the sliding arm.

[0012] Furthermore, a motor seat is installed on the slide arm, a motor is installed on the motor seat, a rotating shaft of the motor is connected to a brush plate bracket, the brush plate is fixed on the brush plate bracket, and the rotation of the brush plate is achieved by the rotation of the motor.

[0013] Furthermore, the limiting mechanism is a screw and a nut; a long hole is opened on the side of the sliding arm, the swing arm is inserted into the sliding arm, and the screw fixed on the swing arm is in the long hole, the axial displacement of the sliding arm is limited by the screw, and the nut is screwed on the screw, and the radial displacement of the sliding arm is limited by the nut.

[0014] Furthermore, the first lateral anti-collision mechanism includes a long tension spring, a spring bolt I and a spring bolt II; the spring bolt I is fixed on the sweeping brush bracket, the spring bolt II is fixed on the swing arm, and the long tension spring is arranged between the spring bolt I and the spring bolt II; when the brush plate is hit from the outside, the swing arm is forced to swing inward, and after the external force disappears, the long tension spring pulls the sweeping brush open and resets it.

[0015] Furthermore, the spring bolt I and the spring bolt II are both composed of a round-head screw and two nuts; the round-head screw in the spring bolt I is inserted into the connecting plate I located on the sweeping brush bracket, and the round-head screw is fixed to the connecting plate I by arranging two nuts in the front and rear; the round-head screw in the spring bolt II is inserted into the connecting plate II located on the swing arm, and the round-head screw is fixed to the connecting plate II by arranging two nuts in the front and rear; the long tension spring is connected between the two round-head screws.

[0016] Furthermore, the second lateral anti-collision mechanism includes a locking hook and a short tension spring; the locking hook is installed on the welding plate of the swing arm through a pin shaft, and the locking hook can rotate around the pin shaft; a short tension spring is connected between the swing arm and the locking hook, and the tail end of the pull wire in the wire pulling mechanism is hung in the locking hook; when the brush plate is hit from the inside, the swing arm is forced to open outward, and the locking hook is pulled inward by the pull wire. When a certain angle is reached, the pull wire is disengaged from the locking hook, and the brush plate is swung outward by the impact force from the inside to avoid the inside impact.

[0017] Furthermore, the wire pulling mechanism includes a width-adjusting cylinder, a rotating plate and two wires; the rotating plate is installed on the sweeping and brushing bracket through a pin shaft, and the rotating plate can rotate around the pin shaft; the cylinder body of the width-adjusting cylinder is hinged on the sweeping and brushing bracket, and the telescopic rod of the width-adjusting cylinder is hinged to the upper end of the rotating plate; the top end of the wire I is hinged to the upper end of the rotating plate, and the tail end of the wire I is connected to the swing arm; the top end of the wire II is hinged to the lower end of the rotating plate, and the tail end of the wire II is connected to the other swing arm; the two wires are tightened by the extension and retraction of the width-adjusting cylinder, thereby realizing the synchronous inward contraction of the swing arms on both sides.

[0018] A road sweeper comprises a vehicle frame lifting frame, on which the above-mentioned road sweeper anti-collision sweeping brush mechanism is installed.

[0019] Beneficial effects of the present invention:

[0020] The anti-collision sweeping brush mechanism of the sweeper provided by the present invention can reduce the damage rate of the sweeping brush after a collision when the sweeper is operating in a small space and a place with complex road conditions. The anti-collision sweeping brush mechanism is composed of a pull wire, a spring and other structural parts. Its anti-collision principle completely relies on a mechanical mechanism and does not require other forms of control. It can greatly reduce the damage rate of the sweeping brush after a collision and has low cost and is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 It is a schematic diagram of the overall assembly of the anti-collision sweeping brush mechanism of the road sweeper of the present invention;

[0023] Figure 2 It is a partial enlarged view of the anti-collision sweeping brush mechanism of the road sweeper of the present invention.

[0024] In the figure: 1-sweeping brush bracket; 2-swing arm; 3-motor seat; 4-brush plate bracket; 5-long tension spring; 6-motor; 7-brush plate; 8-spring bolt I; 9-short tension spring; 10-lock hook; 11-compression spring; 12-width adjustment cylinder; 13-pull wire; 14-turn plate; 15-sliding arm; 16-limiting mechanism. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the implementation of the present invention clearer, the technical scheme in the embodiment of the present invention will be described in more detail below in conjunction with the drawings in the embodiment of the present invention. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of the present invention, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. The embodiments of the present invention are described in detail below in conjunction with the drawings.

[0026] like Figure 1 As shown, a road sweeper anti-collision sweeping brush mechanism includes a sweeping brush bracket 1, brush plates 7 located at both ends of the sweeping brush bracket 1, a swing arm 2, a wire pulling mechanism, a longitudinal anti-collision mechanism, a first lateral anti-collision mechanism and a second lateral anti-collision mechanism.

[0027] One end of the swing arm 2 is hinged to the sweeping brush bracket 1, and the other end of the swing arm 2 is connected to the brush disc 7; the wire pulling mechanism is installed on the sweeping brush bracket 1, and the swing arms 2 on both sides are synchronously retracted inwardly through the wire pulling mechanism; the longitudinal anti-collision mechanism is installed on the swing arm 2, and when the brush disc 7 is hit from the front, the brush disc 7 is buffered by the longitudinal anti-collision mechanism; the first transverse anti-collision mechanism is installed between the sweeping brush bracket 1 and the swing arm 2, and when the brush disc 7 is hit from the outside, the brush disc 7 is buffered by the first transverse anti-collision mechanism; the second transverse anti-collision mechanism is installed between the sweeping brush bracket 1 and the swing arm 2, and when the brush disc 7 is hit from the inside, the brush disc 7 is buffered by the second transverse anti-collision mechanism.

[0028] The following is a preferred embodiment of the longitudinal anti-collision mechanism of the above embodiment:

[0029] like Figure 2 As shown, the rear end of the swing arm 2 is connected to the sweeping brush bracket 1 through a pin; the longitudinal anti-collision mechanism includes a sliding arm 15 and a compression spring 11; the sliding arm 15 is installed at the front end of the swing arm 2, and the sliding arm 15 is pushed to the position of the limiting mechanism 16 by the compression spring 11 located on the inner side of the swing arm 2; the brush plate 7 is installed on the sliding arm 2.

[0030] It is further explained that a motor seat is installed on the slide arm 15 , a motor 6 is installed on the motor seat, a rotating shaft of the motor 6 is connected to the brush plate bracket 4 , a brush plate 7 is fixed on the brush plate bracket 4 , and the rotation of the brush plate 7 is achieved by the rotation of the motor 6 .

[0031] A preferred embodiment of the limiting mechanism of the above embodiment is given below:

[0032] The limiting mechanism 16 is a screw and a nut; a long hole is opened on the side of the sliding arm 15, the swing arm 2 is inserted into the sliding arm 15, and the screw fixed on the swing arm 2 is in the long hole, the axial displacement of the sliding arm 15 is limited by the screw, and the nut is screwed on the screw, and the radial displacement of the sliding arm 15 is limited by the nut. The above is a detailed description of the specific implementation of the present invention, but the present invention is not limited to the specific embodiments described above, which are only examples. For those skilled in the art, any mechanism for limiting the displacement of the sliding arm is also within the scope of the present invention.

[0033] The following is a preferred embodiment of the first lateral anti-collision mechanism of the above embodiment:

[0034] Continue to refer to Figure 2 As shown, the first lateral anti-collision mechanism includes a long tension spring 5, a spring bolt I8 and a spring bolt II; the spring bolt I8 is fixed on the sweeping brush bracket 1, the spring bolt II is fixed on the swing arm 2, and the long tension spring 5 is arranged between the spring bolt I8 and the spring bolt II; when the brush plate 7 is hit from the outside, the swing arm 2 is forced to swing inward, and after the external force disappears, the long tension spring 5 pulls the sweeping brush open again to reset.

[0035] Preferred solution: both spring bolt I8 and spring bolt II are composed of a round-head screw and two nuts; the round-head screw in spring bolt I8 is inserted into the connecting plate I located on the sweeping bracket 1, and the round-head screw is fixed to the connecting plate I by arranging two nuts in front and back; the round-head screw in spring bolt II is inserted into the connecting plate II located on the swing arm 2, and the round-head screw is fixed to the connecting plate II by arranging two nuts in front and back; the long tension spring 5 is connected between the two round-head screws. The above is a detailed description of the specific implementation of the present invention, but the present invention is not limited to the specific embodiments described above, which are only used as examples. For those skilled in the art, any mechanism for connecting the long tension spring is also within the scope of the present invention.

[0036] The following is a preferred embodiment of the second lateral anti-collision mechanism of the above embodiment:

[0037] Continue to refer to Figure 2 As shown, the second lateral anti-collision mechanism includes a lock hook 10 and a short tension spring 9; the lock hook 10 is installed on the welding plate of the swing arm 2 through a pin shaft, and the lock hook 10 can rotate around the pin shaft; a short tension spring 9 is connected between the swing arm 2 and the lock hook 10, and the tail end of the pull wire in the pull wire mechanism is hung in the lock hook 10; when the brush plate 7 is hit from the inside, the swing arm 2 is forced to open outward, and the lock hook 10 is pulled inward by the pull wire 13. When it reaches a certain angle, the pull wire 13 is disengaged from the lock hook 10, and the brush plate 7 is swung outward by the impact force from the inside to avoid the inside impact.

[0038] The following is a preferred embodiment of the wire pulling mechanism of the above embodiment:

[0039] The wire pulling mechanism includes a width-adjusting cylinder 12, a rotating plate 14 and two wires 13; the rotating plate 14 is installed on the sweeping and brushing bracket 1 through a pin shaft, and the rotating plate 14 can rotate around the pin shaft; the cylinder body of the width-adjusting cylinder 12 is hinged on the sweeping and brushing bracket 1, and the telescopic rod of the width-adjusting cylinder 12 is hinged to the upper end of the rotating plate 14; the top end of the wire I is hinged to the upper end of the rotating plate 14, and the tail end of the wire I is connected to the swing arm 2; the top end of the wire II is hinged to the lower end of the rotating plate 14, and the tail end of the wire II is connected to the other swing arm 2; the two wires 13 are tightened by the extension and retraction of the width-adjusting cylinder 12, thereby realizing the synchronous inward contraction of the swing arms 2 on both sides.

[0040] The working process of the anti-collision sweeping brush mechanism of the road sweeper of the present invention is as follows:

[0041] like Figure 1 , Figure 2 As shown, before normal operation, the width adjustment cylinder 12 needs to be controlled to extend, the rotating plate 14 needs to be pushed to rotate, the tension of the pull wire 13 is released, and the swing arm 2 is pulled outward by the long tension springs 5 ​​on both sides to reach the operating state.

[0042] During operation, when the front end of the brush plate 7 is hit from the outside of the brush plate 7, the swing arm 2 is forced to swing inwards to prevent the brush plate 7 from being damaged. After the external force disappears, the long tension springs 5 ​​on both sides pull the brush plate 7 open and reset. When the front end of the brush plate 7 is hit from the inside of the brush plate 7, the swing arm 2 is forced to open outwards. At this time, the tension on the pull wire 13 will suddenly increase, and the lock hook 10 will be pulled inward by the pull wire 13. When it reaches a certain angle, the pull wire 13 will be disengaged from the lock hook 10, and the brush plate 7 is hit from the outside. The tension of the side long tension spring 5 and the impact force on the inside swing outward to avoid the inner impact. After the impact disappears, the car needs to be stopped and the pull wire 13 is re-hook onto the lock hook 10 at the place where it falls off. The lock hook 10 is also pulled by the short tension spring 9 to re-hook the pull wire 13. When the front end of the brush plate 7 receives a front impact, the compression spring 11 in the swing arm 2 can buffer the impact force from the front, thereby reducing the impact force on the brush plate 7. When the impact force disappears, the compression spring 11 pushes the sliding arm 15 on the swing arm 2 to its original position.

[0043] The invention also discloses a road sweeper, comprising a vehicle frame lifting frame, on which the road sweeper anti-collision sweeping brush mechanism is installed.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A road sweeper anti-collision sweeping brush mechanism, comprising a sweeping brush bracket and brush plates located at both ends of the sweeping brush bracket; characterized in that: Also includes: A swing arm, one end of which is hinged to the sweeping brush bracket, and the other end of which is connected to the brush plate; A wire pulling mechanism, which is installed on the sweeping brush bracket, and the swing arms on both sides are synchronously retracted inwards through the wire pulling mechanism; A longitudinal anti-collision mechanism is installed on the swing arm, and when the brush plate is hit from the front, the longitudinal anti-collision mechanism is used to buffer the brush plate; A first transverse anti-collision mechanism is installed between the sweeping brush bracket and the swing arm. When the brush plate is hit from the outside, the first transverse anti-collision mechanism is used to buffer the brush plate. A second lateral anti-collision mechanism is installed between the sweeping brush bracket and the swing arm. When the brush plate is hit from the inside, the second lateral anti-collision mechanism is used to buffer the brush plate. The first lateral anti-collision mechanism comprises a long tension spring, a spring bolt I and a spring bolt II; The spring bolt I is fixed on the sweeping brush bracket, the spring bolt II is fixed on the swing arm, and the long tension spring is arranged between the spring bolt I and the spring bolt II; When the brush plate is hit from the outside, the swing arm is forced to swing inwards, and when the external force disappears, the long tension spring pulls the sweeping brush back to its original position. The spring bolt I and spring bolt II are both composed of a round head screw and two nuts; The round-head screw in the spring bolt I is inserted into the connecting plate I located on the sweeping brush bracket, and the round-head screw is fixed to the connecting plate I by arranging two nuts in front and behind; The round-head screw in the spring bolt II is inserted into the connecting plate II on the swing arm, and the round-head screw is fixed to the connecting plate II by two nuts arranged front and back; The long tension spring is connected between two round-head screws; The second lateral anti-collision mechanism includes a lock hook and a short tension spring; The lock hook is installed on the welding plate of the swing arm through a pin shaft, and the lock hook can rotate around the pin shaft; A short tension spring is connected between the swing arm and the lock hook, and the tail end of the pull wire in the pull wire mechanism is hung in the lock hook; When the brush plate is hit from the inside, the swing arm is forced to open outwards, and the lock hook is pulled inwards by the pull wire. When it reaches a certain angle, the pull wire is disengaged from the lock hook, and the brush plate is hit from the inside and swings outwards to avoid the inside impact. The rear end of the swing arm is connected to the sweeping brush bracket through a pin; the longitudinal anti-collision mechanism includes a sliding arm and a compression spring; the sliding arm is installed at the front end of the swing arm, and the sliding arm is pushed to the position of the limiting mechanism by the compression spring located on the inner side of the swing arm; the brush plate is installed on the sliding arm; The slide arm is provided with a motor seat, the motor seat is provided with a motor, the rotating shaft of the motor is connected with the brush plate bracket, the brush plate is fixed on the brush plate bracket, and the rotation of the brush plate is realized by the rotation of the motor; The limiting mechanism is a screw and a nut; a long hole is opened on the side of the slide arm, the swing arm is inserted into the slide arm, and the screw fixed on the swing arm is in the long hole, the axial displacement of the slide arm is limited by the screw, and the nut is screwed on the screw, and the radial displacement of the slide arm is limited by the nut; The wire pulling mechanism includes a width-adjusting cylinder, a rotating plate and two wires; the rotating plate is installed on the sweeping and brushing bracket through a pin shaft, and the rotating plate can rotate around the pin shaft; the cylinder body of the width-adjusting cylinder is hinged on the sweeping and brushing bracket, and the telescopic rod of the width-adjusting cylinder is hinged to the upper end of the rotating plate; the top end of the wire I is hinged to the upper end of the rotating plate, and the tail end of the wire I is connected to the swing arm; the top end of the wire II is hinged to the lower end of the rotating plate, and the tail end of the wire II is connected to the other swing arm; the two wires are tightened by the extension and retraction of the width-adjusting cylinder, thereby realizing the synchronous inward contraction of the swing arms on both sides.

2. A road sweeper, comprising a frame lifting frame, characterized in that: The anti-collision sweeping brush mechanism of the road sweeper according to claim 1 is installed on the vehicle frame lifting frame.

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