Height-adjustable hand-push type double-wheel sweeping machine

Abstract

The utility model relates to a height-adjustable hand-push type double-wheel sweeper which comprises a main body, a left rotatable side brush and a right rotatable side brush are arranged on the front portion of the bottom face of the main body, a universal wheel shaft capable of moving up and down is movably arranged on a middle shaft of the side brushes, and universal wheels are arranged below the universal wheel shaft. The device further comprises an adjusting cross rod capable of moving left and right, parallel adjusting inclined grooves are formed in the two ends of the adjusting cross rod, outlets are formed in the lower ends of the adjusting inclined grooves, hanging edges are arranged on the two sides of the outlets, hanging heads are arranged at the upper ends of the universal wheel shafts, and the hanging heads are movably arranged on the adjusting inclined grooves. The adjusting cross rod moves left and right to drive the universal wheel shaft to move up and down; the adjusting cross rod is provided with a rack part, a gear is fixedly connected to the lower portion of the rotary knob shaft, and the gear is in meshing transmission with the rack part. The cleaning device has the advantages that the cleaning effect is improved, and the universal wheels can be lifted through the adjusting knobs on the uneven ground.

Description

Technical Field

[0001] This utility model relates to an improvement of a hand-push dual-wheel sweeper, particularly an improvement of the dual-wheel assembly. Background Technology

[0002] Hand-push dual-wheel sweepers are widely used in various indoor and outdoor locations. Workers push the handle to move the sweeper forward. During the forward movement, the side brushes sweep the surrounding garbage to the working area of ​​the main brush. The main brush rotates at high speed, rolling up the garbage from the ground, and then sending the garbage into the garbage collection bin through the air duct or other conveying device.

[0003] There are two side brushes, each with a caster wheel underneath. The caster wheels are usually made of wear-resistant and non-slip rubber tires. The dual-wheel design makes the sweeper more stable during movement and can adapt to different ground conditions, such as flat cement ground and slightly undulating tile ground.

[0004] However, different debris has different sizes and densities, requiring the side brush to have different cleaning heights. Utility Model Content

[0005] To overcome the shortcomings of current dual-wheel sweepers where the side brushes cannot be adjusted in height or are inconvenient to adjust, this utility model provides an adjustable height hand-push dual-wheel sweeper.

[0006] The technical solution of this utility model to solve its technical problem is as follows: an adjustable height hand-push double-wheel sweeper, including a main body, with traveling wheels on both sides of the main body, a pusher on the upper side of the main body, a main brush in the middle of the bottom surface of the main body, and two rotatable side brushes, one on the left and one on the right, on the front of the bottom surface of the main body. A through hole is provided at the central axis of the side brushes, and a movable universal wheel axle is provided in the through hole. A universal wheel is provided below the universal wheel axle. It also includes a left-right movable adjusting crossbar, with parallel adjusting grooves at both ends of the adjusting crossbar. An outlet is provided at the lower end of the adjusting groove, and hanging edges are provided on both sides of the outlet. A hanging head is provided at the upper end of the universal wheel axle, and the hanging head is movably mounted on the adjusting groove. Thus, the left-right movement of the adjusting crossbar will drive the universal wheel axle to move up and down. The adjusting crossbar has a rack portion, and a knob is provided on the upper side of the main body. The knob's knob shaft is inserted into the main body, and a gear is fixedly connected below the knob shaft. The gear meshes with the rack portion for transmission.

[0007] To facilitate gear positioning and gear selection, the gear is coaxially connected to a positioning disk. The positioning disk has a positioning groove around the gear shaft. The main body is located below the positioning groove and has a spring ball that can extend into the positioning groove for positioning.

[0008] The adjustable gears are optimized, and the positioning grooves are provided in total with 16, which correspond to the eight gears on the left side and the eight gears on the right side of the adjustment bar.

[0009] To ensure a secure hold, the spring balls are provided in two sets, symmetrically arranged on both sides of the gear shaft.

[0010] A preferred structure for a swivel wheel includes a swivel wheel mounting portion located below the swivel wheel axle. The swivel wheel mounting portion has a horizontal shaft and a bent rod connecting the horizontal shaft, and the swivel wheel is mounted on the horizontal shaft.

[0011] A specific arrangement of an adjusting crossbar, wherein the adjusting crossbar is located in an adjusting chamber, and the hanger of the universal wheel axle extends into the adjusting chamber and hangs on the adjusting inclined groove.

[0012] An additional conduit structure is added, with the through hole in the middle of the side brush located on the conduit.

[0013] To facilitate knob operation, an operating section is provided on the upper part of the knob.

[0014] To further facilitate operation, the operating section is equipped with indicator markings.

[0015] In a preferred embodiment, the positioning disk and the gear are integrated, a bushing is provided above the positioning disk, and the lower end of the knob shaft is connected and fixed to the bushing.

[0016] This invention allows the adjustment bar to be moved in the same way as the adjustment knob. Moving the adjustment bar left and right will cause the universal wheel shaft on the adjustment groove to move up and down, so that the universal wheel can adjust the vertical distance relative to the side brush in the vertical direction, thereby selecting the optimal cleaning height.

[0017] The beneficial effects of this utility model are as follows: 1. Improved cleaning effect: On uneven ground, such as potholed outdoor roads or indoor thresholds with height differences, the casters can be raised by adjusting the knob, allowing the main brush to better contact the ground and ensuring a better cleaning effect. For smooth and flat ground, appropriately lowering the height of the casters allows the sweeper to run more smoothly and reduces the impact of shaking on cleaning. To handle different types of garbage, when sweeping heavier, larger particles, raising the casters allows the main brush to have greater pressure on the ground and more effectively pick up the garbage; when sweeping lighter dust, lowering the height of the casters allows for fine-tuning the distance between the main brush and the ground, avoiding excessive disturbance of dust and subsequent dust generation. 2. Extended equipment lifespan and reduced component wear in environments with poor ground conditions: By adjusting the height of the casters, the various components of the sweeper can operate under appropriate pressure and position, effectively reducing wear and extending the equipment's lifespan. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of one embodiment.

[0019] Figure 2 This is a schematic diagram of the bottom surface of one embodiment.

[0020] Figure 3 This is a cross-sectional schematic diagram of one embodiment.

[0021] Figure 4 yes Figure 3 Enlarged diagram of point A in the diagram.

[0022] Figure 5 This is a schematic diagram of the relevant height adjustment structure.

[0023] Figure 6 This is a schematic diagram of the adjusting bar and gear. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] Example 1

[0026] Combined with appendix Figures 1 to 6 An adjustable height hand-push dual-wheel sweeper includes a main body 1, with travel wheels 2 on both sides of the main body 1, a pusher 3 on the upper side of the main body 1, a main brush 4 in the center of the bottom surface of the main body 1, and two rotatable side brushes 5, one on the left and one on the right, on the front bottom surface of the main body 1. A through hole is provided at the central axis of each side brush 5, through which a swivel axle 6 that can move up and down is movably installed. A swivel wheel 19 is located below the swivel axle 6. The sweeper also includes an adjustable crossbar 7 that can move left and right, with flat surfaces at both ends. The adjustable sloping groove 8 has an outlet at its lower end and mounting edges 9 on both sides of the outlet. The universal wheel axle 6 has a mounting head 10 at its upper end, which is movably mounted on the adjustable sloping groove 8. Thus, the left and right movement of the adjusting bar 7 will drive the universal wheel axle 6 to move up and down. The adjusting bar 7 has a rack part 11. The main body 1 has a knob 12 on its upper side. The knob 12 shaft is inserted into the main body 1, and a gear 13 is fixedly connected below the knob 12 shaft. The gear 13 meshes with the rack part 11 for transmission.

[0027] To facilitate gear selection and positioning of gear 13, gear 13 is coaxially connected to a positioning disk 14. The positioning disk 14 has a positioning groove 15 around the shaft of gear 13. The main body 1 is provided with a spring ball 16 below the positioning groove 15, and the ball can be inserted into the positioning groove 15 for positioning.

[0028] The adjustable gears are optimized, and the positioning groove 15 has a total of 16 slots, which correspond to the eight gears on the left and eight gears on the right of the adjusting crossbar 7, respectively.

[0029] To ensure a secure fixation, the spring balls are provided in two sets, symmetrically arranged on both sides of the gear 13 shaft.

[0030] In a preferred embodiment of the universal wheel 19, a universal wheel mounting portion is provided below the universal wheel axle 6, the universal wheel mounting portion having a horizontal shaft and a bent rod connecting the horizontal shaft, and the universal wheel 19 is mounted on the horizontal shaft.

[0031] A specific arrangement of the adjusting crossbar 7, wherein the adjusting crossbar 7 is located inside the adjusting chamber 17, and the hanger 10 of the universal wheel axle 6 extends into the adjusting chamber 17 and hangs on the adjusting inclined groove 8.

[0032] An additional conduit 18 structure is added, with the through hole in the middle of the side brush 5 located on the conduit 18.

[0033] To facilitate the operation of the knob 12, an operating part is provided on the upper part of the knob 12.

[0034] To further facilitate operation, the operating section is equipped with indicator markings.

[0035] In a preferred embodiment, the positioning disk 14 and the gear 13 are integrated, a bushing is provided above the positioning disk 14, and the lower end of the knob 12 shaft is connected and fixed to the bushing.

[0036] In use, the adjustment bar 7 can be moved in the same way as the adjustment knob 12. The left and right movement of the adjustment bar 7 will cause the universal wheel shaft 6 on the adjustment groove 8 to move up and down, so that the universal wheel 19 can adjust the vertical distance relative to the side brush 5, thereby selecting the optimal cleaning height.

[0037] The beneficial effects of this utility model are as follows: 1. Improved cleaning effect: On uneven ground, such as potholed outdoor roads or indoor thresholds with height differences, the casters can be raised by adjusting the knob, allowing the main brush to better contact the ground and ensuring a better cleaning effect. For smooth and flat ground, appropriately lowering the height of the casters allows the sweeper to run more smoothly and reduces the impact of shaking on cleaning. To handle different types of garbage, when sweeping heavier, larger particles, raising the casters allows the main brush to have greater pressure on the ground and more effectively pick up the garbage; when sweeping lighter dust, lowering the height of the casters allows for fine-tuning the distance between the main brush and the ground, avoiding excessive disturbance of dust and subsequent dust generation. 2. Extended equipment lifespan and reduced component wear in environments with poor ground conditions: By adjusting the height of the casters, the various components of the sweeper can operate under appropriate pressure and position, effectively reducing wear and extending the equipment's lifespan.

Claims

1. A height-adjustable, hand-push, dual-wheel sweeper, comprising a main body, with traveling wheels on both sides of the main body, a pusher on the upper side of the main body, a main brush in the center of the bottom surface of the main body, and two rotatable side brushes, one on the left and one on the right, on the front of the bottom surface of the main body, characterized in that: The side brush has a through hole at its central axis, through which a swivel axle that can move up and down is movably mounted. Below the swivel axle is a swivel wheel. The brush also includes a horizontally movable adjusting crossbar. The adjusting crossbar has parallel adjusting grooves at both ends. The lower end of the adjusting groove has an outlet with mounting edges on both sides. The upper end of the swivel axle has a mounting head that is movably mounted on the adjusting groove. Thus, the horizontal movement of the adjusting crossbar causes the swivel axle to move up and down. The adjusting crossbar has a rack section. A knob is located on the upper side of the main body. The knob's knob shaft is inserted into the main body, and a gear is fixedly connected below the knob shaft. The gear meshes with the rack section for transmission.

2. The adjustable height hand-push dual-wheel sweeper according to claim 1, characterized in that: The gear is coaxially connected to a positioning disk. The positioning disk has a positioning groove around the gear shaft. The main body is located below the positioning groove and has a spring ball that can extend into the positioning groove for positioning.

3. The adjustable height hand-push dual-wheel sweeper according to claim 2, characterized in that: There are a total of 16 positioning slots, which correspond to the eight positions on the left and eight positions on the right of the adjustment bar.

4. The adjustable height hand-push dual-wheel sweeper according to claim 2, characterized in that: The spring beads are provided in two sets, symmetrically arranged on both sides of the gear shaft.

5. The adjustable height hand-push dual-wheel sweeper according to claim 1, characterized in that: Below the universal wheel axle is a universal wheel mounting part, which has a horizontal shaft and a bent rod connecting the horizontal shaft, and the universal wheel is mounted on the horizontal shaft.

6. The adjustable height hand-push dual-wheel sweeper according to claim 1, characterized in that: The adjusting crossbar is located in the adjusting chamber, and the hanger of the universal wheel axle extends into the adjusting chamber and hangs on the adjusting inclined groove.

7. The adjustable height hand-push dual-wheel sweeper according to claim 1, characterized in that: The through hole in the middle of the side brush is located on the guide tube.

8. The adjustable height hand-push type double-wheel sweeper according to claim 1, characterized in that: The knob has an operating section on its upper part.

9. The adjustable height hand-push dual-wheel sweeper according to claim 8, characterized in that: The operating unit is equipped with indicator markings.

10. The adjustable height hand-push dual-wheel sweeper according to claim 2, characterized in that: The positioning disk and gear are integrated, and a bushing is provided above the positioning disk. The lower end of the knob shaft is connected and fixed to the bushing.

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