Front side brush lifting mechanism of sweeper and adjusting method of front side brush lifting mechanism

Abstract

The invention discloses a sweeper front side brush lifting mechanism which comprises a chassis assembly, a front side brush rotating support, a side brush lifting support, a side brush lifting push rod and a side brush assembly, and the front side brush rotating support can rotate inwards and outwards relative to the chassis assembly; the side brush assembly is installed at the front end of the side brush lifting support, the rear end of the side brush lifting support is hinged to the lower portion of the front side brush rotating support, one end of the side brush lifting push rod is movably connected with the lower portion of the front side brush rotating support, and a hole groove is formed in the side brush lifting support. The other end of the side brush lifting push rod is movably connected with a hole groove of the side brush lifting support through a shaft pin, and the two ends of the side brush lifting buffering tension spring are connected with the shaft pin and one end of the side brush lifting push rod respectively. The lifting mechanism has the buffering effects of collision prevention, shock absorption, pressure reduction and the like, and the safety and reliability of operation of a front brush system are effectively guaranteed; the structure is compact, and arrangement and installation are not affected.

Description

Technical Field

[0001] The invention relates to the technical field of sweepers, and in particular to a front brush lifting mechanism of a sweeper and an adjustment method thereof. Background Art

[0002] The sweeper is an integrated sanitation cleaning device that combines sweeping and vacuuming functions. The main brush is an important part of the sweeper. When the sweeper is working, the dust and garbage are rolled into the trash can through the rotation of the main brush; the two front brushes sweep the garbage on the ground to the inside of the sweeper, and then the garbage on the ground is thrown into the trash can through the rotation of the main brush. The main brush is set behind the two front brush assemblies, and the two front brushes are on the same straight line parallel to the width direction of the sweeper.

[0003] The front brush assembly is generally arranged at the front of the chassis of the sweeper. The front brush assembly includes two front brushes. The recovery and lifting of the front brush assembly are mostly driven by a cylinder and an electric push rod. The existing bracket structure is mostly a four-link structure. The lifting and recovery flipping cannot be buffered. The driving structure is easily damaged by external impact, affecting normal work.

[0004] For example, Chinese patent CN117738117A discloses a front brush control assembly for a sweeper, which includes a chassis. Both sides of the front of the chassis are connected to the front brush assembly through a rotating swing arm mechanism, and the rotating swing arm mechanism is connected to a rotating handle I through a lifting cable to control the lifting of the front brush assembly. The rotating swing arm mechanism is connected to a rotating handle II through a rotating cable to control the swing of the rotating swing arm mechanism. The related structures are easily damaged by external impact, which affects normal operation. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a front brush lifting mechanism for a sweeper and an adjustment method thereof, which has buffering effects such as anti-collision, shock absorption and pressure reduction, and effectively ensures the safety and reliability of the operation of the front brush system.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] The front side brush lifting mechanism of the sweeper comprises a chassis assembly, a front side brush rotating bracket, a side brush lifting bracket, a side brush lifting push rod and a side brush assembly. The front side brush rotating bracket can be rotated inward and outward relative to the chassis assembly; the side brush assembly is installed at the front end of the side brush lifting bracket, and also comprises a side brush lifting buffer tension spring, the rear end of the side brush lifting bracket is hingedly connected to the lower part of the front side brush rotating bracket, one end of the side brush lifting push rod is movably connected to the lower part of the front side brush rotating bracket, a hole groove is provided on the side brush lifting bracket, the other end of the side brush lifting push rod is movably connected to the hole groove of the side brush lifting bracket through an axle pin, and the two ends of the side brush lifting buffer tension spring are respectively connected to the axle pin and one end of the side brush lifting push rod.

[0008] Further:

[0009] The top of the front brush rotating bracket is hinged on the chassis assembly through a vertical rotating shaft, the chassis assembly is provided with an arc groove, and the top of the front brush rotating bracket is provided with a limiting protrusion located in the arc groove.

[0010] The chassis assembly is provided with a connected side brush recovery push rod and a side brush recovery pull wire, one end of the side brush recovery pull wire is connected to the front side brush rotating bracket, the chassis assembly is provided with an upper bracket, the upper bracket is provided with a waist-shaped hole, the upper end of the side brush recovery push rod is connected to a movable shaft located in the waist-shaped hole, and a side brush recovery buffer tension spring is provided between the upper bracket and the movable shaft.

[0011] It also includes a side brush adjustment bracket, the side brush assembly is arranged on the side brush adjustment bracket, the side brush adjustment bracket is hingedly connected to the side brush lifting bracket, a connecting ear is arranged backward on the side brush adjustment bracket, an adjustment block is arranged at the front end of the side brush lifting bracket, and an adjustment bolt is arranged between the adjustment block and the connecting ear.

[0012] The front side brush rotating bracket includes a connected top rotating plate and a vertical plate. The top rotating plate is hingedly connected to the chassis assembly through a vertical axis. A movable hole is provided at the bottom of the vertical plate. One end of the side brush lifting push rod is connected to a movable pin located in the movable hole.

[0013] The side brush lifting buffer tension springs are a pair arranged opposite to each other, and the pair of side brush lifting buffer tension springs are located on both sides of the side brush lifting push rod.

[0014] The side brush lifting bracket comprises two lifting bracket side plates arranged opposite to each other, the tops of the two lifting bracket side plates are connected through an upper plate to form a cavity structure with an opening below, and the side brush lifting push rod is located in the cavity structure.

[0015] An adjustment positioning plate is provided on the outer side of the side plate of the lifting bracket, and the adjustment positioning plate is connected to the hinged rotating shaft. An upward positioning hook is provided at the rear end of the adjustment positioning plate. A downward flip structure that cooperates with the positioning hook is provided at the rear of the top of the front brush rotating bracket. A positioning rod is connected to the front end of the adjustment positioning plate. A group of positioning holes for cooperating with the positioning rod are provided on the side wall of the side plate of the lifting bracket.

[0016] The adjustment method of the present invention comprises the following steps: the side brush lifting bracket is connected with the front side brush rotating bracket through a pin shaft, and the upper end mounting hole of the side brush lifting push rod is fixed in the waist-shaped hole groove on the side brush adjustment bracket through a pin shaft, so that the side brush lifting push rod can move up and down in the hole groove, and at the same time, two side brush lifting buffer tension springs are respectively connected to two ends of the pin shaft, and the other end is installed in the side brush lifting bracket, thereby forcing the side brush lifting push rod to always be in the lower end position of the waist-shaped hole groove under normal conditions. In addition, the lower end mounting hole of the side brush lifting push rod is installed on the waist hole of the front side brush rotating bracket through a pin shaft, and is in the lower end position of the waist hole under normal conditions. If there are foreign objects such as bulges on the ground, the side brush assembly will avoid in the reverse direction to protect the side brush assembly.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The front brush lifting mechanism of the sweeper has a reasonable structural design, a buffer structure is integrated in the lifting related structure, and a stable mechanical connecting rod transmission is adopted. At the same time, it has buffering effects such as anti-collision, shock absorption and pressure reduction, which effectively ensures the safe and reliable operation of the front brush system; and the structure is compact and does not affect the layout and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following is a brief description of the contents and symbols in the drawings of this specification:

[0020] Figure 1 It is a schematic diagram of the lifting mechanism structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the lifting state of the side brush of the present invention.

[0022] Figure 3 It is a schematic diagram of the flipping state of the side brush of the present invention.

[0023] Figure 4 and Figure 5 It is a schematic diagram of adjusting the angle of the side brush of the present invention.

[0024] Figures 6 to 8 It is a partially enlarged schematic diagram of the mechanism of the present invention.

[0025] In the figure:

[0026] 1. Side brush lifting push rod, 2. Side brush lifting buffer spring, 3. Side brush assembly, 4. Side brush recovery push rod, 5. Side brush recovery buffer spring, 6. Side brush recovery wire, 7. Side brush reset torsion spring, 8. Side brush height adjustment rod, 9. Side brush angle adjustment joint bolt, 10. Side brush lifting bracket, 11. Side brush adjustment bracket, 12. Front side brush rotating bracket, 13. Chassis assembly,

[0027] 20. Side brush rotating plate, 21. Bracket plate, 22. Lifting bracket side plate, 23. Side brush angle adjustment plate, 24. Adjustment positioning plate. DETAILED DESCRIPTION

[0028] The specific implementation modes of the present invention will be further explained in detail below through the description of embodiments with reference to the accompanying drawings.

[0029] like Figures 1 to 8 As shown, the front side brush lifting mechanism of the sweeper includes a chassis assembly, a front side brush rotating bracket, a side brush lifting bracket, a side brush adjustment bracket, a side brush lifting buffer tension spring, a side brush lifting push rod and a side brush assembly; the front side brush rotating bracket can be rotated inward and outward relative to the chassis assembly; the side brush assembly is installed at the front end of the side brush lifting bracket through the side brush adjustment bracket.

[0030] The rear end of the side brush lifting bracket is hingedly connected to the lower part of the front side brush rotating bracket, one end of the side brush lifting push rod is movably connected to the lower part of the front side brush rotating bracket, the side brush lifting bracket is provided with a hole groove, the other end of the side brush lifting push rod is movably connected to the hole groove of the side brush lifting bracket through an axle pin, and the two ends of the side brush lifting buffer tension spring are respectively connected to the axle pin and one end of the side brush lifting push rod.

[0031] The lifting mechanism of the present invention integrates a buffer tension spring structure and adopts a stable mechanical connecting rod transmission, and has buffering effects such as anti-collision, shock absorption and pressure reduction, which effectively ensures the safety and reliability of the operation of the front brush system; and the structure is compact and does not affect the layout and installation.

[0032] The top of the front brush rotating bracket is hinged on the chassis assembly through a vertical rotating shaft and a torsion spring. The chassis assembly is provided with an arc groove. The top of the front brush rotating bracket is provided with a limiting protrusion located in the arc groove. The arc groove and the limiting protrusion are used to limit the inner and outer rotation angles of the front brush.

[0033] A connected side brush recovery push rod and a side brush recovery pull wire are provided on the chassis assembly, one end of the side brush recovery pull wire is connected to the front side brush rotating bracket, an upper bracket is provided on the chassis assembly, the upper bracket is provided with a waist-shaped hole, the upper end of the side brush recovery push rod is connected to a movable shaft located in the waist-shaped hole, a side brush recovery buffer tension spring is provided between the upper bracket and the movable shaft, forming a rotation buffer structure, which can buffer the lateral impact on the side brush and improve the reliability of the side brush.

[0034] The side brush assembly is arranged on the side brush adjustment bracket, which is hingedly connected to the side brush lifting bracket. The side brush adjustment bracket is provided with a side brush angle adjustment plate 23, and the side brush angle adjustment plate is provided with a connecting ear at the rear. The front end of the side brush lifting bracket is provided with an adjustment block, and an adjusting bolt is provided between the adjustment block and the connecting ear. The side brush angle can be adjusted by adjusting the bolt.

[0035] The front side brush rotating bracket includes a connected top side brush rotating plate 20 and a bracket plate 21. The bracket plate is a vertical plate. The top rotating plate is hingedly connected to the chassis assembly through a vertical axis. A movable hole is provided at the bottom of the vertical plate. One end of the side brush lifting push rod is connected to a movable pin located in the movable hole to further improve the buffering effect.

[0036] The side brush lifting bracket includes two lifting bracket side plates 22 arranged opposite to each other. The tops of the two lifting bracket side plates are connected by an upper plate to form a cavity structure with an opening below. The side brush lifting push rod 1 is located in the cavity structure. The side brush lifting buffer tension spring is a pair of oppositely arranged side brush lifting buffer tension springs, and the pair of side brush lifting buffer tension springs are located on both sides of the side brush lifting push rod. It has a compact structure, occupies a small space, and is easy to arrange and install.

[0037] An adjustment positioning plate 24 is provided on the outer side of the lifting bracket side plate, the adjustment positioning plate is connected to the hinged rotating shaft, an upward positioning hook is provided at the rear end of the adjustment positioning plate, a downward flip structure matching the positioning hook is provided at the rear of the top of the front brush rotating bracket, a positioning rod is connected to the front end of the adjustment positioning plate, and a group of positioning holes for matching with the positioning rod are provided on the side wall of the lifting bracket side plate; the height of the lifting structure can be adjusted, and the operation is stable and reliable.

[0038] The mechanism of the present invention mainly includes a front side brush lifting power assembly, a front side brush recovery mechanism, etc.; it is used to realize the lifting and lowering of the front side brush of the sweeper and the adjustment of the side brush wear, etc., adopts a stable mechanical connecting rod transmission, and has buffering effects such as anti-collision, shock absorption and pressure reduction, etc., which effectively ensures the safety and reliability of the system operation.

[0039] Preferred embodiments of the present invention are:

[0040] like Figure 1 As shown, the side brush lifting mechanism mainly consists of a side brush lifting push rod 1, a side brush lifting buffer tension spring 2, a side brush assembly 3, a side brush lifting bracket 10, a side brush adjustment bracket 11, a front side brush rotating bracket 12, and a chassis assembly 13. The side brush lifting push rod 1 provides power for the overall lifting, and the side brush lifting bracket 10 is connected to the side brush adjustment bracket 11. In addition, the side brush lifting buffer tension spring 2 is installed around the pin shaft at the rear rotation point of the push rod. Figure 2 As shown, during cleaning operations, the side brush lifting push rod 1 retracts and moves, and the side brush assembly 3 rotates downward due to gravity and contacts the road surface to perform operations; conversely, the side brush lifting push rod 1 extends and moves, and the side brush assembly 3 rises and leaves the ground, protecting the operating device and facilitating vehicle transfer.

[0041] like Figure 1As shown, the protective buffer adjustment method of the present invention is: the side brush lifting bracket 10 is connected to the front side brush rotating bracket 12 through a pin shaft, and the upper end mounting hole of the side brush lifting push rod 1 is fixed in the waist-shaped hole groove on the side brush adjusting bracket 11 through a pin shaft, so that the side brush lifting push rod 1 can move up and down in the hole groove, and at the same time, two side brush lifting buffer tension springs 2 are respectively connected at both ends of the pin shaft, and the other end is installed on the side brush lifting bracket 10, thereby forcing the side brush lifting push rod 1 to always be in the lower end position of the waist-shaped hole groove under normal conditions. In addition, the lower end mounting hole of the side brush lifting push rod 1 is installed on the waist hole of the front side brush rotating bracket 12 through a pin shaft, and is in the lower end position of the waist hole under normal conditions. If there are foreign objects such as convex humps on the ground, the side brush assembly 3 will avoid in the reverse direction to protect the side brush assembly 3.

[0042] To sum up the above, when the reaction force and impact load on the side brush lifting push rod 1 are greater than the initial tension of the shock-absorbing tension spring 2, the side brush lifting push rod 1 will be forced to move upward along the slot, and the side brush lifting shock-absorbing tension spring 2 will adjust the tension and alleviate the impact according to the load it bears, so as to protect the relevant mechanical mechanisms from unnecessary damage caused by rigid impact, and at the same time effectively avoid the vibration and noise caused by the road environment and the vehicle's own power components during operation.

[0043] like Figure 3 As shown, the side brush recovery mechanism is mainly composed of a side brush recovery push rod 4, a side brush recovery buffer tension spring 5, a side brush recovery pull wire 6, a side brush reset torsion spring 7, etc.; the side brush recovery push rod 4 retracts, pulling the side brush recovery pull wire 6 to achieve the inward retraction of the side brush assembly and the extension of the side brush recovery push rod 4, and the side brush assembly is opened outward by the torque of the side brush reset torsion spring 7. The side brush recovery push rod 4 is moment-controlled, and the customer can perform cleaning operations at any point within the limit range of the side brush recovery, which is more flexible.

[0044] The mounting hole at the upper end of the side brush recovery push rod 4 is fixed to the waist-shaped hole groove on the direction bracket of the chassis assembly 13 through a pin shaft, so that the side brush recovery push rod 4 can move up and down in the hole groove. At the same time, the two ends of the pin shaft are respectively connected to two side brush recovery buffer tension springs 5, and the other end is installed on the direction bracket of the chassis assembly 13, thereby forcing the side brush recovery push rod 4 to always be installed in the upper end position of the waist-shaped hole groove under normal conditions. When the recovery of the side brush assembly 3 is obstructed, the side brush recovery push rod 4 will slide down along the waist-shaped hole groove to relieve the impact, thereby protecting the side brush recovery push rod 4, the side brush recovery pull wire 6 and other mechanism parts. The opening limit of the side brush assembly 3 is limited by the limiting protrusion on the front side brush rotating bracket 12 and the limiting hole of the chassis assembly 13. At the open extreme position, the cleaning side brush recovery push rod 4, the side brush recovery pull wire 6 and other parts are not subjected to force, which also plays a protective role for the components.

[0045] When the reaction force and impact load on the side brush recovery push rod 4 are greater than the initial tension of the recovery buffer tension spring 5, the side brush recovery push rod 4 will be forced to move downward along the slot. At the same time, the recovery buffer tension spring 5 will adjust the tension and alleviate the impact according to the load it bears, so as to protect related components from unnecessary damage due to impact. At the same time, it can also effectively avoid the vibration and noise caused by the road environment and the vehicle's own power components during operation.

[0046] Side brush adjustment Figure 4 and Figure 5 As shown, the angle adjustment is to adjust the length of the side brush angle adjustment joint bolt 9 to adjust the angle between the side brush lifting bracket 10 and the side brush adjustment bracket 11. After adjustment, tighten the bolt. The operation is simple, the structure is stable, and the angle will not change after long-term operation. The side brush wear adjustment is to adjust the side brush height adjustment rod 8 to the appropriate limit hole of the side brush lifting bracket 10 after the side brush is worn, and the side brush compensation adjustment is performed. No tools are required and it can be operated with one hand. The operation is simple and the structure is stable and reliable.

[0047] The above is only an explanation of the preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0048] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A front side brush lifting mechanism for a sweeper, comprising a chassis assembly, a front side brush rotating bracket, a side brush lifting bracket, a side brush lifting push rod and a side brush assembly, wherein the front side brush rotating bracket can be rotated inward and outward relative to the chassis assembly; the side brush assembly is installed at the front end of the side brush lifting bracket, and is characterized in that: It also includes a side brush lifting buffer tension spring, the rear end of the side brush lifting bracket is hingedly connected to the lower part of the front side brush rotating bracket, one end of the side brush lifting push rod is movably connected to the lower part of the front side brush rotating bracket, the side brush lifting bracket is provided with a hole groove, the other end of the side brush lifting push rod is movably connected to the hole groove of the side brush lifting bracket through an axle pin, and the two ends of the side brush lifting buffer tension spring are respectively connected to the axle pin and one end of the side brush lifting push rod.

2. The front brush lifting mechanism of the sweeper as claimed in claim 1, characterized in that: The top of the front brush rotating bracket is hinged on the chassis assembly through a vertical rotating shaft, the chassis assembly is provided with an arc groove, and the top of the front brush rotating bracket is provided with a limiting protrusion located in the arc groove.

3. The front brush lifting mechanism of the sweeper as claimed in claim 2, characterized in that: The chassis assembly is provided with a connected side brush recovery push rod and a side brush recovery pull wire, one end of the side brush recovery pull wire is connected to the front side brush rotating bracket, the chassis assembly is provided with an upper bracket, the upper bracket is provided with a waist-shaped hole, the upper end of the side brush recovery push rod is connected to a movable shaft located in the waist-shaped hole, and a side brush recovery buffer tension spring is provided between the upper bracket and the movable shaft.

4. The front brush lifting mechanism of the sweeper as claimed in claim 1, characterized in that: It also includes a side brush adjustment bracket, the side brush assembly is arranged on the side brush adjustment bracket, the side brush adjustment bracket is hingedly connected to the side brush lifting bracket, a connecting ear is arranged backward on the side brush adjustment bracket, an adjustment block is arranged at the front end of the side brush lifting bracket, and an adjustment bolt is arranged between the adjustment block and the connecting ear.

5. The front brush lifting mechanism of the sweeper as claimed in claim 1, characterized in that: The front side brush rotating bracket includes a connected top rotating plate and a vertical plate. The top rotating plate is hingedly connected to the chassis assembly through a vertical axis. A movable hole is provided at the bottom of the vertical plate. One end of the side brush lifting push rod is connected to a movable pin located in the movable hole.

6. The front brush lifting mechanism of the sweeper as claimed in claim 1, characterized in that: The side brush lifting buffer tension springs are a pair arranged opposite to each other, and the pair of side brush lifting buffer tension springs are located on both sides of the side brush lifting push rod.

7. The front brush lifting mechanism of the sweeper as claimed in claim 1, characterized in that: The side brush lifting bracket comprises two lifting bracket side plates arranged opposite to each other, the tops of the two lifting bracket side plates are connected through an upper plate to form a cavity structure with an opening below, and the side brush lifting push rod is located in the cavity structure.

8. The front brush lifting mechanism of the sweeper as claimed in claim 7, characterized in that: An adjustment positioning plate is provided on the outer side of the side plate of the lifting bracket, and the adjustment positioning plate is connected to the hinged rotating shaft. An upward positioning hook is provided at the rear end of the adjustment positioning plate. A downward flip structure that cooperates with the positioning hook is provided at the rear of the top of the front brush rotating bracket. A positioning rod is connected to the front end of the adjustment positioning plate. A group of positioning holes for cooperating with the positioning rod are provided on the side wall of the side plate of the lifting bracket.

9. A method for adjusting the front brush lifting mechanism of a sweeping vehicle according to any one of claims 1 to 8, characterized in that: The adjustment method comprises the following steps: The side brush lifting bracket is connected to the front side brush rotating bracket through a pin shaft, and the upper end mounting hole of the side brush lifting push rod is fixed in the waist-shaped hole groove on the side brush adjustment bracket through a pin shaft, so that the side brush lifting push rod can move up and down in the hole groove, and at the same time, two side brush lifting buffer tension springs are respectively connected to two ends of the pin shaft, and the other end is installed in the side brush lifting bracket, thereby forcing the side brush lifting push rod to always be in the lower end position of the waist-shaped hole groove under normal conditions. In addition, the lower end mounting hole of the side brush lifting push rod is installed on the waist hole of the front side brush rotating bracket through a pin shaft. It is in the lower end position of the waist hole under normal conditions. If there are foreign objects such as bulges on the ground, the side brush assembly will avoid in the reverse direction to protect the side brush assembly.

Images