Electrically powered sweeper truck

Abstract

An electrically powered scrubber, comprising: a chassis; a front axle and a rear axle; a cab disposed above the front axle and connected to the chassis; a battery module disposed at a side of the chassis transverse to a driving direction of the electrically powered scrubber between the front axle and the rear axle; a motor module disposed at a middle of the chassis between the front axle and the rear axle and connected to the battery module; an actuator module disposed at the middle of the chassis between the front axle and the rear axle and connected to the motor module and a scrubbing module; the scrubbing module disposed near an end of the chassis along the driving direction of the electrically powered scrubber and not disposed between the front axle and the rear axle; a collection device pivotably disposed on the chassis and connected to the scrubbing module; and a main water tank disposed on the chassis between the cab and the collection device.

Description

TECHNICAL FIELD

[0001] The present application relates to an electric road sweeper. BACKGROUND

[0002] A road sweeper is a vehicle that has both sweeping and washing functions. Road sweepers are generally classified into fuel road sweepers and electric road sweepers. An electric road sweeper uses a high-power motor to replace a fuel auxiliary engine in a fuel road sweeper as a power source for a sweeping device. The layout of an electric road sweeper generally includes a rear battery box type pure electric chassis, a middle wide suction nozzle, double-sided single sweeping discs, and a high-pressure spray bar, or a rear battery box type pure electric chassis, a middle four-sweeping disc, a rear suction nozzle, and a high-pressure spray bar. The suction nozzle and sweeping disc of an electric road sweeper are generally arranged in the middle of the vehicle. If a side-hung battery box type pure electric chassis is used, interference with the side-hung battery box will occur. Therefore, such an electric road sweeper can only use a rear battery box type pure electric chassis. Compared with a fuel road sweeper, the layout of an electric road sweeper increases the rear battery box, making the wheelbase of the electric road sweeper larger. In this way, the minimum turning radius of the electric road sweeper also becomes larger, resulting in a decrease in the maneuverability of the electric road sweeper.

[0003] An electric road sweeper generally uses a single power source to control the actuators of various sweeping devices in the vehicle, such as a centrifugal fan, a high-pressure water pump, and a hydraulic oil pump, via a conventional device, so that the above-mentioned actuators work and stop at the same time, and one of the actuators cannot be controlled individually. In this way, in the road sweeping mode in which only the road needs to be swept and does not need to be washed, the high-pressure water pump is still running, causing energy waste. Conversely, when the water tank connected to the high-pressure water pump is out of water, the protection mechanism is triggered, so that the high-pressure water pump cannot run, and thus the remaining actuators cannot run either.

[0004] A road sweeper is generally equipped with a sweeping disc for sweeping the road. In order to prevent the sweeping disc from being pressed and deformed by its own weight for a long time in a non-working state, it is necessary to lift the sweeping disc and keep it in a fixed position in a non-working state.

[0005] The current solution for lifting the sweeping disc and keeping it in a fixed position in a non-working state mainly includes lifting the sweeping disc by using an oil cylinder or an air cylinder and keeping the sweeping disc in a fixed position by using the holding force of the oil cylinder or the air cylinder itself against the weight of the sweeping disc. The advantage of the solution using an oil cylinder is that the internal leakage of the oil cylinder is small, the holding force is strong, but the cost is high. The advantage of the solution using an air cylinder is that the cost is relatively low, but the holding force of the air cylinder is very easy to fluctuate with the pressure of the air source and even gradually disappear, so the ability of the air cylinder to keep the sweeping disc in a fixed position is poor.

[0006] A sweepster collects garbage by means of a bin mounted on its vehicle body. The garbage in the bin needs to be emptied by opening the rear door of the bin. Since the garbage in the bin usually contains a lot of water, the sealing performance of the rear door is an important indicator for the sweepster. In order to enhance the sealing performance of the rear door, the sweepster is usually equipped with a rear door locking mechanism. The existing locking mechanism usually pushes the rear door against the bin by means of a hydraulic cylinder. In order to prevent the pressure of the hydraulic cylinder from dropping, a hydraulic lock needs to be installed on the hydraulic circuit of the hydraulic cylinder to ensure that the hydraulic cylinder is still in a static state when the oil supply is stopped, so as to achieve the purpose of locking the rear door.

[0007] The installation of the hydraulic lock on the hydraulic circuit of the hydraulic cylinder requires the replacement of the hydraulic circuit itself, resulting in high cost. In addition, as the number of uses increases, the hydraulic lock will gradually age and even fail, thereby failing to prevent the pressure of the hydraulic cylinder from dropping, ultimately resulting in a decrease in the sealing performance of the rear door.

[0008] It is desirable to develop an electric sweepster with higher mobility and independent control of the actuators of various cleaning devices, which can keep the sweep disc of the sweepster in a fixed position in a non-working state without relying on the holding force of the cylinder or air cylinder itself, and can lock the rear door without a hydraulic lock. SUMMARY

[0009] In order to solve the above technical problems, the present application proposes an electric sweepster with higher mobility and independent control of the actuators of various cleaning devices, which can keep the sweep disc of the sweepster in a fixed position in a non-working state without relying on the holding force of the cylinder or air cylinder itself, and can lock the rear door without a hydraulic lock.

[0010] The present application proposes an electric sweepster, characterized in that the electric sweepster comprises: a chassis; a front axle and a rear axle arranged on the chassis; a battery module arranged at a side of the chassis transverse to the driving direction of the electric sweepster between the front axle and the rear axle; a sweep module arranged near an end of the chassis along the driving direction of the electric sweepster and not arranged between the front axle and the rear axle; and a collecting device pivotably arranged on the chassis and connected to the sweep module; wherein the sweep module comprises: a sweep disc assembly arranged at a side of the chassis transverse to the driving direction of the sweepster; wherein the sweep disc assembly comprises: a sweep disc; and a sweep disc lock hook configured to selectively lock the sweep disc; wherein the collecting device comprises: a bin provided with a bin opening communicating between the outside and the inside of the bin; a rear door hinged to the bin and configured to selectively cover the bin opening of the bin; and a rear door locking mechanism connected to the bin and configured to selectively lock the rear door.

[0011] According to an optional embodiment, the electrically powered sweeper includes a driver cabin disposed above the front axle and connected to the chassis, a motor module disposed in the middle of the chassis between the front axle and the rear axle and connected to the battery module, an actuator module disposed in the middle of the chassis between the front axle and the rear axle and connected to the motor module and the sweeping module, and a main water tank disposed on the chassis between the driver cabin and the collecting device.

[0012] According to an optional embodiment, the actuator module includes a centrifugal fan selectively connected to the collecting device, a high-pressure water pump connected to the main water tank, and a hydraulic oil pump connected to the collecting device and the sweeping module, the sweeping module including a wide suction nozzle disposed below the chassis and connected to the collecting device and adjacent to the sweeping disc assembly, a high-pressure nozzle disposed below the chassis, disposed behind the wide suction nozzle in the driving direction, and connected to the high-pressure water pump, a sweeping disc rear nozzle disposed on the side of the sweeping disc assembly away from the rear axle and connected to the high-pressure water pump, and a pre-dust removal nozzle disposed on the chassis on the side of the front axle opposite the rear axle and connected to the high-pressure water pump, the collecting device including a garbage collection tank disposed in the tank body, a sealing strip made of elastic material, disposed on the outer wall of the tank body, and engaged with the rear door when the rear door covers the tank opening of the tank body.

[0013] According to an optional embodiment, the sweeping disc assembly includes a sweeping disc support fixed to the chassis, a sweeping disc connecting rod hinged between the sweeper and the sweeping disc, a sweeping disc rotating arm hinged between the sweeper and the sweeping disc, wherein the sweeping disc rotating arm is provided with a protrusion near the end hinged to the sweeper and a locking pin is disposed on the protrusion, a retractable lifting cylinder hinged to the sweeping disc support at one end and to the protrusion of the sweeping disc rotating arm at the other end, and a retractable locking cylinder hinged between the sweeping disc support and the lug portion of the sweeping disc hook, according to an optional embodiment, the sweeping disc hook is hinged to the sweeping disc support between the sweeping disc connecting rod and the sweeping disc rotating arm and includes a hook portion and a lug portion, the first side of the hook portion is recessed inward and selectively engages the locking pin, the second side of the hook portion opposite the first side is bulged outward and selectively engages the locking pin when the first side of the hook portion does not engage the locking pin, and the shape of the sweeping disc hook is arranged such that, when the first side of the hook portion engages the locking pin, the hinged axis of the sweeping disc rotating arm to the sweeping disc support is perpendicular to the line connecting the hinged axis of the sweeping disc hook to the sweeping disc support to the locking pin of the sweeping disc rotating arm.

[0014] According to an optional embodiment, the sweeping disc connecting rod and the sweeping disc rotating arm are parallel to each other and have substantially equal lengths, the locking cylinder is a single-acting self-resetting cylinder, the free state of which is the retracted state, and the locking cylinder includes a piston rod and an internal spring and is configured to extend the piston rod upon admission of compressed air and to return to the retracted state by means of the internal spring upon discharge of compressed air.

[0015] According to an optional embodiment, the sweeping disc assembly comprises a first position, a second position, a third position, a fourth position and a fifth position; in the first position, the first side of the hook portion of the sweeping disc lock hook engages the locking pin to prevent the locking pin from moving away from the sweeping disc support, thereby preventing the sweeping disc rotating arm from counterclockwise rotation; in the second position, the locking cylinder is elongated to drive the sweeping disc lock hook to rotate around the hinge point of the sweeping disc lock hook and the sweeping disc support, thereby disengaging the locking pin, thus releasing the restriction on the sweeping disc rotating arm; in the third position, the lifting cylinder is elongated to drive the sweeping disc rotating arm to rotate counterclockwise around the hinge point of the sweeping disc rotating arm and the sweeping disc support, thereby lowering the sweeping disc; in the fourth position, the locking cylinder is retracted to a free state under the action of the spring inside the locking cylinder; and in the fifth position, the lifting cylinder is retracted to lift the sweeping disc rotating arm, and the locking pin of the sweeping disc rotating arm engages the second side of the hook portion of the sweeping disc lock hook opposite to the first side and presses the sweeping disc lock hook, so that the locking cylinder is stretched.

[0016] According to an optional embodiment, the collecting device is provided with a hollow portion in the box body for selectively accommodating the driving module and the actuator module; the rear door is hinged to the box body by means of the first pin shaft provided thereon.

[0017] According to an optional embodiment, the rear door locking mechanism comprises: a lock hook assembly pivotally provided on the box body and comprising a lock hook, a lock hook connecting shaft and a driving handle, wherein the lock hook connecting shaft is parallel to the first pin shaft and rotatably provided on the box body, the lock hook is fixed on the lock hook connecting shaft and selectively abuts against the rear door, and the driving handle is fixed on the end of the lock hook connecting shaft; a connecting rod hinged at one end to the end of the driving handle of the lock hook assembly; a crank hinged at one end to the lower part of the box body; and a hydraulic cylinder hinged at one end to the lower part of the box body and spaced apart from the one end of the crank by a distance.

[0018] According to an optional embodiment, the lock hook assembly comprises a plurality of lock hooks parallel to and spaced apart from each other; the lock hook, the lock hook connecting shaft and the driving handle are fixed to each other by welding; the other end of the crank, the other end of the hydraulic cylinder and the other end of the connecting rod are hinged together; and when the hydraulic cylinder is elongated to the longest, the hinge points of the hydraulic cylinder and the box body and the common hinge point of the crank, the hydraulic cylinder and the connecting rod are respectively on both sides of the line connecting the hinge point of the driving handle and the connecting rod to the hinge point of the crank and the box body.

[0019] According to an optional embodiment, the front axle is provided with front wheels at both ends; the rear axle is provided with rear wheels at both ends; the battery module comprises two side-hung battery frames and a plurality of batteries provided in the side-hung battery frames; the two side-hung battery frames are respectively provided at the two side edges of the chassis transverse to the driving direction of the electric sweep vehicle; the number of batteries provided in each side-hung battery frame is equal.

[0020] According to an optional embodiment, the motor module comprises: a centrifugal fan motor connected to the centrifugal fan and driving the centrifugal fan to draw out the air in the collecting device; a high-pressure water pump motor connected to the high-pressure water pump and driving the high-pressure water pump to pump the water in the main water tank to the washing and sweeping module and increase the water pressure; and a hydraulic oil pump motor driving the hydraulic oil pump to provide power to the collecting device and the washing and sweeping module.

[0021] According to an optional embodiment, the washing and sweeping module comprises a plurality of wide suction nozzles; the wide suction nozzles extend one after another across the entire width of the electric washing and sweeping truck transversely to the driving direction to substantially cover the entire width of the electric washing and sweeping truck; the high-pressure nozzles and the pre-dedusting nozzles each comprise a plurality of spray heads; and the spray heads extend one after another across the entire width of the electric washing and sweeping truck transversely to the driving direction to substantially cover the entire width of the electric washing and sweeping truck.

[0022] According to an optional embodiment, the collecting device comprises a sub-water tank arranged in the tank body and connected to the high-pressure water pump for providing additional clean water reserve for the washing and sweeping module.

[0023] In the electric washing and sweeping truck according to the present application, since the washing and sweeping module is not arranged between the front axle and the rear axle, the electric washing and sweeping truck can adopt a side-hung battery frame type chassis. The side-hung battery frame does not occupy the space above the chassis of the electric washing and sweeping truck, so that the motor module, the actuator module and the collecting device can be arranged in the space above the chassis of the electric washing and sweeping truck, improving the internal space utilization rate of the electric washing and sweeping truck. In addition, the wheelbase of the side-hung battery frame type chassis is generally smaller than that of the rear-mounted battery frame type chassis. In this way, the electric washing and sweeping truck has a shorter wheelbase, higher maneuverability and better passability.

[0024] In the electric washing and sweeping truck according to the present application, the motor module and the actuator module are accommodated in the hollow part when the collecting device is not lifted, and cannot be touched from the outside of the electric washing and sweeping truck. This configuration of the collecting device can prevent the motor module and the actuator module from being affected by bad weather such as rain and snow and malfunctioning, prolonging the service life of the motor module and the actuator module.

[0025] The electric washing and sweeping truck according to the present application solves the problem that the sweeping disc assembly will fall to the ground due to its own weight and the sweeping wire will be deformed under the action of its own weight when the sweeping disc assembly is not used for a long time. The electric washing and sweeping truck according to the present application uses a pneumatic cylinder to lift the sweeping disc instead of a traditional hydraulic cylinder to lift the sweeping disc, reducing the manufacturing cost of the sweeping disc assembly. The electric washing and sweeping truck according to the present application uses a lock hook to lock the sweeping disc, so that the sweeping disc cannot fall. In the locked state, the force generated by the weight of the sweeping disc is not applied to the locking cylinder, but is entirely borne by the lock hook, thereby greatly improving the service life of the locking cylinder. The sweeping disc assembly of the electric washing and sweeping truck according to the present application has a compact structure, can quickly, intuitively and accurately lock the sweeping disc, is convenient for production debugging, and saves operation cost.

[0026] The electrically driven washing and sweeping vehicle according to the present application can realize the automatic locking of the rear door without adding a hydraulic lock, which greatly reduces the modification cost and assembly man-hours of the electrically driven washing and sweeping vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0027] The foregoing and other aspects of the present application will become more fully understood from the detailed description given herein below, taken in conjunction with the accompanying drawings. It should be understood that the drawings are not to scale as such emphasis is instead placed upon the principles of the present application. It should also be understood that, in this disclosure, relative terms are used to describe relationships between elements, which are illustrative of the broadest possible scope of the present application. Unless otherwise specified, these terms are not intended to signal relative importance of one element over another, nor are they intended to limit the scope of the present application in any way.

[0028] Figure 1 is a top view of the electrically driven washing and sweeping vehicle according to the present application.

[0029] Figure 2 and Figure 3 is a perspective view of the electrically driven washing and sweeping vehicle according to the present application.

[0030] Figure 4 is a side view of the sweeping disc assembly of the electrically driven washing and sweeping vehicle according to the present application.

[0031] Figure 5 is a perspective view of the sweeping disc arm of the sweeping disc assembly of Figure 4

[0032] Figure 6 is a partially enlarged side view of the sweeping disc assembly of the electrically driven washing and sweeping vehicle according to the present application.

[0033] Figures 7A-7E are side views of the sweeping disc assembly of the electrically driven washing and sweeping vehicle according to the present application, respectively in a first position, a second position, a third position, a fourth position and a fifth position.

[0034] Figure 8 is a partial longitudinal sectional view of the electrically driven washing and sweeping vehicle according to the present application.

[0035] Figure 9 is a partial side view of the electrically driven washing and sweeping vehicle according to the present application.

[0036] Figure 10 is a partial side view of the electrically driven washing and sweeping vehicle according to the present application, wherein the rear door is in a closed state.

[0037] Figure 11 is a partial side view of the electrically driven washing and sweeping vehicle according to the present application, wherein the rear door is in an open state.

[0038] Figure 12 is a force diagram of the rear door locking mechanism of the electrically driven washing and sweeping vehicle according to the present application. DETAILED DESCRIPTION

[0039] ​Exemplary embodiments of the present application will be described herein below with reference to the accompanying drawings. While exemplary embodiments of the present application are illustrated, it is to be understood that the application is not limited to the embodiments described herein, but can be practiced with variation within the scope and spirit of the application. Rather, the present application is provided so that others skilled in the art can understand the application complete and its applications.

[0040] Figure 1 is a top view of an electric sweeper 1 according to the present application. The electric sweeper 1 includes a chassis 10, a front axle 11, a rear axle 12, a cab 13, a battery module 14, a motor module 15, an actuator module 16, a sweeping module 17, a collecting device 18 (see Figure 2 ) and a main water tank 19. The front axle 11 and the rear axle 12 are disposed on the chassis 10 and are respectively close to two different ends of the chassis 10 along a traveling direction of the electric sweeper 1. The front axle 11 is provided with front wheels 110 at both ends. The rear axle 12 is provided with rear wheels 120 at both ends. The cab 13 is disposed above the front axle 11 and is connected to the chassis 10. The battery module 14 is disposed at a side of the chassis 10 transverse to the traveling direction of the electric sweeper 1 between the front axle 11 and the rear axle 12. The motor module 15 is disposed at a middle of the chassis 10 between the front axle 11 and the rear axle 12 and is connected to the battery module 14. The actuator module 16 is disposed at the middle of the chassis 10 between the front axle 11 and the rear axle 12 and is connected to the motor module 15. The sweeping module 17 is disposed close to an end of the chassis 10 along the traveling direction of the electric sweeper 1, is connected to the actuator module 16, and is not disposed between the front axle 11 and the rear axle 12. The collecting device 18 is pivotably disposed on the chassis 10 and is connected to the sweeping module 17. The main water tank 19 is disposed on the chassis 10 between the cab 13 and the collecting device 18.

[0041] The battery module 14 includes two side-hung battery boxes 140 and a plurality of batteries disposed in the side-hung battery boxes 140. The two side-hung battery boxes 140 are respectively disposed at two sides of the chassis 10 transverse to the traveling direction of the electric sweeper 1. The number of batteries disposed in each side-hung battery box 140 is equal. Since the sweeping module 17 is not disposed between the front axle 11 and the rear axle 12, the electric sweeper 1 can adopt a side-hung battery box type chassis. The side-hung battery boxes 140 do not occupy the space above the chassis 10 of the electric sweeper 1, so that the motor module 15, the actuator module 16 and the collecting device 18 can be disposed in the space above the chassis 10 of the electric sweeper 1, improving the internal space utilization rate of the electric sweeper 1. In addition, the wheelbase of the side-hung battery box type chassis is generally smaller than that of the back-mounted battery box type chassis. In this way, the wheelbase of the electric sweeper 1 is shorter, the maneuverability is higher, and the passability is better.

[0042] Figure 2 and Figure 3is a perspective view of the electric sweeper 1 according to the present application. In Figure 2 and Figure 3 , the collection device 18 of the electric sweeper 1 is pivoted to the raised position. Referring to Figure 2 and Figure 3 , the motor module 15 includes a centrifugal fan motor 150, a high-pressure water pump motor 151 and a hydraulic oil pump motor 152. The actuator module 16 includes a centrifugal fan 160 selectively connected to the collection device 18, a high-pressure water pump 161 connected to the main water tank 19 and a hydraulic oil pump 162 connected to the collection device 18 and the sweeping module 17. The centrifugal fan motor 150 drives the centrifugal fan 160 for drawing air out of the collection device 18 so that the interior of the collection device 18 has a negative pressure relative to the exterior. The high-pressure water pump motor 151 drives the high-pressure water pump 161 for increasing water pressure and pumping water in the main water tank 19 to the sweeping module 17 to flush the ground. The hydraulic oil pump motor 152 drives the hydraulic oil pump 162 for powering the pivoting of the collection device 18 and the operation of the sweeping module 17.

[0043] In combination with Figure 1 and Figure 2 , the sweeping module 17 includes a wide suction nozzle 170, a high-pressure nozzle 171, a sweeping disk assembly 172, a sweeping disk rear nozzle 173 and a pre-dust removal nozzle 174. The wide suction nozzle 170 is disposed below the chassis 10 and connected to the collection device 18 for collecting garbage and dust on the road surface. In an alternative embodiment, the sweeping module 17 can include a plurality of wide suction nozzles 170. These wide suction nozzles 170 extend one after another across the entire width of the electric sweeper 1 transversely to the driving direction to substantially cover the entire width of the electric sweeper 1.

[0044] The high-pressure nozzle 171 is disposed below the chassis 10 on the side of the wide suction nozzle 170 away from the rear axle 12 and connected to the high-pressure water pump 161 for spraying pressurized water to flush the road surface. The high-pressure nozzle 171 includes a plurality of spray heads 1710. These spray heads 1710 extend one after another across the entire width of the electric sweeper 1 transversely to the driving direction to substantially cover the entire width of the electric sweeper 1.

[0045] The sweeping disk rear nozzle 173 is disposed on the side of the sweeping disk assembly 172 away from the rear axle 12 and connected to the high-pressure water pump 161 for spraying pressurized water to flush the road surface.

[0046] The pre-dusting nozzle 174 is disposed on the chassis 10 on the side of the front axle 11 opposite the rear axle 12 and is connected to the high-pressure water pump 161 for spraying pressurized water to wash the road surface. The pre-dusting nozzle 174 includes a plurality of spray heads 1710. These spray heads 1710 extend one after another across the entire width of the electric road washing vehicle 1 in the transverse direction to the driving direction of the electric road washing vehicle 1 to substantially cover the entire width of the electric road washing vehicle 1.

[0047] Figure 4 is a side view of the sweeping disc assembly 172 of the electric road washing vehicle 1 according to the present application.

[0048] The sweeping disc assembly 172 is disposed at the side of the chassis 10 transverse to the driving direction of the electric road washing vehicle 1 and next to the wide suction nozzle 170. The sweeping disc assembly 172 includes a sweeping disc 1720, a sweeping disc support 1721, a sweeping disc link 1722, a sweeping disc swing arm 1723, a lifting cylinder 1724, a sweeping disc lock hook 1725, and a locking cylinder 1726. The sweeping disc support 1721 is fixed on the chassis 10. The sweeping disc link 1722 and the sweeping disc swing arm 1723 are hinged between the sweeping disc support 1721 and the sweeping disc 1720 to control the lifting of the sweeping disc 1720 relative to the sweeping disc support 1721.

[0049] Figure 5 shows Figure 4 is a perspective view of the sweeping disc swing arm of the sweeping disc assembly 172. The sweeping disc swing arm 1723 is provided with a protrusion 1727 near the end hinged to the sweeping disc support 1721 and a locking pin 1728 on the protrusion 1727.

[0050] Returning to Figure 4 , the lifting cylinder 1724 is retractable, with one end hinged to the sweeping disc support 1721 and the other end hinged to the sweeping disc swing arm 1723, specifically to the protrusion 1727 of the sweeping disc swing arm 1723. The sweeping disc lock hook 1725 is hinged to the sweeping disc support 1721 between the sweeping disc link 1722 and the sweeping disc swing arm 1723 and includes a hook portion 1725A and a lug portion 1725B. A first side of the hook portion 1725A of the sweeping disc lock hook 1725 is recessed inwardly and selectively engages the locking pin 1728 to prevent the locking pin 1728 from moving away from the sweeping disc support 1721. A second side of the hook portion 1725A of the sweeping disc lock hook 1725 opposite the first side is bulged outwardly and selectively engages the locking pin 1728 in the event that the locking pin 1728 does not engage the first side of the hook portion 1725A of the sweeping disc lock hook 1725 to rotate the sweeping disc lock hook 1725 when the locking pin 1728 moves closer to the sweeping disc support 1721, thereby causing the locking pin 1728 to return to the first side of the hook portion 1725A of the sweeping disc lock hook 1725.

[0051] The locking cylinder 1726 is retractable and is hinged between the sweep disc support 1721 and the lug portion 1725B of the sweep disc lock hook 1725 to control the rotation of the sweep disc lock hook 1725 about its hinge point with the sweep disc support 1721.

[0052] The sweep disc link 1722 and the sweep disc arm 1723 are parallel to each other and have substantially equal lengths, so that the hinge points of the sweep disc 1720, the sweep disc link 1722, the sweep disc arm 1723 and the sweep disc support 1721 with each other form the vertices of a parallelogram, i.e. the sweep disc 1720, the sweep disc link 1722, the sweep disc arm 1723 and the sweep disc support 1721 form a four-bar linkage. In this way, the retraction of the lifting cylinder 1724 can rotate the sweep disc arm 1723 about its hinge point with the sweep disc support 1721, and in turn the four-bar linkage formed by the sweep disc 1720, the sweep disc link 1722, the sweep disc arm 1723 and the sweep disc support 1721 can lift or lower the sweep disc 1720 in the vertical direction of the sweep disc support 1721.

[0053] The locking cylinder 1726 can be a single-acting self-resetting cylinder, whose free state is the retracted state. This means that the locking cylinder 1726 comprises a piston rod and an internal spring and is configured to extend the piston rod upon the admission of compressed air and to return to the retracted state by means of the internal spring upon the discharge of compressed air.

[0054] Figure 6 A partial enlarged side view of the sweep disc assembly 172 of the electric sweeper 1 according to the present application is shown. Referring to Figure 6 A is the center of the hinge axis of the sweep disc arm 1723 with the sweep disc support 1721, B is the center of the hinge axis of the sweep disc lock hook 1725 with the sweep disc support 1721, and C is the locking pin 1728 of the sweep disc arm 1723. The shape of the sweep disc lock hook 1725 can be set such that, in the case where the first side of the hook portion 1725A of the sweep disc lock hook 1725 engages the locking pin 1728, the hinge axis of the sweep disc arm 1723 with the sweep disc support 1721 is perpendicular to the line connecting the hinge axis of the sweep disc lock hook 1725 with the sweep disc support 1721 to the locking pin 1728 of the sweep disc arm 1723, i.e. AC is perpendicular to BC.

[0055] The movement trend of the sweep disc lock hook 1725 is analyzed as follows: under the action of the weight of the sweep disc 1720, the sweep disc arm 1723 has a tendency to rotate counterclockwise about point A. Since the AC line is perpendicular to the BC line, the force direction of the limit pin shaft to the sweep disc lock hook 1725 is in the direction away from the sweep disc support 1721 along the BC line (the F direction in the figure). The reverse extension of the above-mentioned force passes through point B to produce a locking effect, so that the sweep disc arm 1723 is locked and cannot rotate counterclockwise.

[0056] Figures 7A-7E FIGS. 16A, 16B, 16C, 16D and 16E show side views of the sweeper disk assembly 172 of the electric sweeper 1 according to the present application in the first, second, third, fourth and fifth positions, respectively. The sweeper disk 1720 is omitted for the sake of simplicity.

[0057] As shown in FIG. 16A, the initial state of the sweeper disk assembly 172 is the first position. In the first position, the first side of the hook portion 1725A of the sweeper disk lock hook 1725 engages the locking pin 1728 to prevent the locking pin 1728 from moving away from the sweeper disk support 1721, thereby preventing the sweeper disk swing arm 1723 from rotating counterclockwise. In this way, the sweeper disk 1720 connected to the sweeper disk swing arm 1723 is locked in a specific position in the air without engaging the ground, and is kept in a fixed position in the non-working state. Figure 7A

[0058] As shown in FIG. 16B, in the case where it is necessary to unlock the sweeper disk 1720, the locking cylinder 1726 is elongated to drive the sweeper disk lock hook 1725 to rotate about the hinge point thereof with the sweeper disk support 1721, and disengage from the locking pin 1728, thereby releasing the sweeper disk swing arm 1723. The sweeper disk assembly 172 is now in the second position. Figure 7B

[0059] As shown in FIG. 16C, in order to lower the sweeper disk 1720, the lifting cylinder 1724 is elongated to drive the sweeper disk swing arm 1723 to rotate counterclockwise about the hinge point thereof with the sweeper disk support 1721, thereby lowering the sweeper disk 1720. The sweeper disk assembly 172 is now in the third position. Figure 7C

[0060] As shown in FIG. 16D, after the sweeper disk 1720 is lowered, the locking cylinder 1726 is retracted to the free state by the action of the spring therein. The sweeper disk assembly 172 is now in the fourth position. In the fourth position, the sweeper disk 1720 engages the ground to perform the cleaning work. Figure 7D

[0061] As shown in FIG. 16E, in order to recover the sweeper disk 1720 after the cleaning work is completed, the lifting cylinder 1724 is retracted to lift the sweeper disk swing arm 1723. At this time, the locking pin 1728 of the sweeper disk swing arm 1723 engages the second side opposite to the first side of the hook portion 1725A of the sweeper disk lock hook 1725 and presses the sweeper disk lock hook 1725, so that the locking cylinder 1726 is stretched. The sweeper disk assembly 172 is now in the fifth position. Figure 7E

[0062] ​​​​​To lock the recovered sweeping disc 1720, the lifting cylinder 1724 continues to contract, so that the locking pin 1728 of the sweeping disc rotating arm 1723 continues to move upward, passing the sweeping disc locking hook 1725. At this time, the sweeping disc locking hook 1725 is retracted by the self-resetting force of the locking cylinder 1726, so that the sweeping disc locking hook 1725 hooks the locking pin 1728 of the sweeping disc rotating arm 1723. The sweeping disc assembly 172 is now in the first position, as shown in Figure 7A .

[0063] The sweeping disc assembly of the electric sweeping vehicle according to the present application solves the problem that the sweeping disc of the sweeping vehicle will fall to the ground and the sweeping wire will be deformed due to its own weight when the sweeping disc is not used for a long time. The sweeping disc assembly uses a cylinder to replace the traditional oil cylinder to lift the sweeping disc, thereby reducing the manufacturing cost of the sweeping disc assembly. The sweeping disc assembly uses a sweeping disc locking hook to lock the sweeping disc, so that the sweeping disc cannot fall. In the locked state, the force generated by the weight of the sweeping disc is not applied to the locking cylinder, but is entirely borne by the sweeping disc locking hook, thereby greatly improving the service life of the locking cylinder. The sweeping disc assembly has the advantages of compact structure and reliable application, and can quickly, intuitively and accurately lock the sweeping disc, facilitating production debugging and saving operation cost.

[0064] Figure 8 is a partial longitudinal sectional view of the electric sweeping vehicle 1 according to the present application. As shown in Figure 8 and in combination with Figure 1 and Figure 2 , the collecting device 18 includes a box body 180, a sub-water tank 181 and a garbage collecting tank 182. The box body 180 is provided with a box body opening to communicate the outside and the inside of the box body. The sub-water tank 181 is arranged in the box body 180 and connected to the high-pressure water pump 161, for providing additional clean water reserve for the sweeping module 17. The garbage collecting tank 182 is arranged above the sub-water tank 181 in the box body 180 and connected to the centrifugal fan 160 and the wide suction nozzle 170, for storing the garbage and dust sucked in through the wide suction nozzle 170. The garbage collecting tank 182 is provided with a collecting tank opening at a position corresponding to the box body opening, so as to pour out the garbage and dust through the collecting tank opening and the box body opening. The collecting device 18 is further provided with a hollow portion 183 in the box body 180 for selectively accommodating the motor module 15 and the actuator module 16. In this way, when the collecting device 18 is not lifted, the motor module 15 and the actuator module 16 are accommodated in the hollow portion 183 and cannot be accessed from the outside of the electric sweeping vehicle 1. This configuration of the collecting device 18 can prevent the motor module 15 and the actuator module 16 from being affected by bad weather such as rain and snow and malfunctioning, thereby prolonging the service life of the motor module 15 and the actuator module 16.

[0065] The operating conditions of the components in various cleaning modes of the electric sweeping vehicle 1 are described below.

[0066] 1) Washing and sweeping mode

[0067] In the washing and sweeping mode, the hydraulic oil pump motor 152 drives the hydraulic oil pump 162 to lower and rotate the sweeping disc 1720 to sweep the garbage and dust on the road surface around the electric washing and sweeping vehicle 1 into the lower side of the electric washing and sweeping vehicle 1. The high-pressure water pump motor 151 drives the high-pressure water pump 161 to pump the water in the main water tank 19 and the auxiliary water tank 181 to the pre-dust removal nozzle 174, the high-pressure nozzle 171 and the sweeping disc rear nozzle 173 to wash the ground. The centrifugal fan motor 150 drives the centrifugal fan 160 to suck out the air in the garbage collection tank 182, so that the inside of the garbage collection tank 182 has a negative pressure relative to the outside. The wide suction nozzle 170 connected to the garbage collection tank 182 sucks in the garbage and dust on the road surface under the action of the negative pressure.

[0068] 2) Sweeping mode

[0069] In the sweeping mode, the hydraulic oil pump motor 152 drives the hydraulic oil pump 162 to lower and rotate the sweeping disc 1720 to sweep the garbage and dust on the road surface around the electric washing and sweeping vehicle 1 into the lower side of the electric washing and sweeping vehicle 1. The high-pressure water pump motor 151 drives the high-pressure water pump 161 to pump the water in the main water tank 19 and the auxiliary water tank 181 to the pre-dust removal nozzle 174, the high-pressure nozzle 171 and the sweeping disc rear nozzle 173 to wash the ground. The centrifugal fan motor 150 drives the centrifugal fan 160 to suck out the air in the garbage collection tank 182, so that the inside of the garbage collection tank 182 has a negative pressure relative to the outside. The wide suction nozzle 170 connected to the garbage collection tank 182 sucks in the garbage and dust on the road surface under the action of the negative pressure.

[0070] 3) Washing mode

[0071] In the washing mode, the high-pressure water pump motor 151 drives the high-pressure water pump 161 to pump the water in the main water tank 19 and the auxiliary water tank 181 to the pre-dust removal nozzle 174, the high-pressure nozzle 171 and the sweeping disc rear nozzle 173 to wash the ground. The centrifugal fan motor 150 drives the centrifugal fan 160 to suck out the air in the garbage collection tank 182, so that the inside of the garbage collection tank 182 has a negative pressure relative to the outside. The wide suction nozzle 170 connected to the garbage collection tank 182 sucks in the garbage and dust on the road surface under the action of the negative pressure.

[0072] The electric washing and sweeping vehicle according to the present application can realize that the sweeping disc or the nozzle covers the whole layout width thereof, so as to adapt to complex road sweeping operation (cleaning, standard, strong washing), and improve the cleaning quality. In the road sweeping mode, the high-pressure water pump of the electric washing and sweeping vehicle according to the present application can not be operated, so as to reduce the energy consumption. Compared with the existing electric washing and sweeping vehicle, the overall layout of the electric washing and sweeping vehicle according to the present application selects a short wheelbase chassis, so as to be compact in structure and higher in maneuverability. The nozzle of the electric washing and sweeping vehicle according to the present application is relatively close to the ground, so that the atomization degree is relatively low, and the impact force of the high-pressure water flow sprayed through the nozzle on the ground is relatively high, so as to improve the cleaning effect.

[0073] Figure 9 is a partial side view of the electric washing and sweeping vehicle 1 according to the present application. In Figure 9 , the driving direction of the washing and sweeping vehicle 1 is from left to right. As shown in Figure 9 , the collecting device 18 includes a sealing strip 184, a rear door 185 and a rear door locking mechanism 186. The sealing strip 184 is made of elastic material and is arranged on the outer wall of the box body 180, specifically in the sealing strip groove on the outer periphery of the box opening of the box body 180. The rear door 185 is pivotally arranged on the outer wall of the box body 180 and includes a first pin shaft 1850. The rear door 185 is hinged to the box body 180 through the first pin shaft 1850 and is configured to selectively cover the box opening of the box body 180. The rear door locking mechanism 186 is connected to the box body 180 and is configured to selectively lock the rear door 185 to tightly engage the rear door 185 with the sealing strip 184.

[0074] Figure 10 is a partial side view of the electric washing and sweeping vehicle 1 according to the present application, in which the rear door 185 is in a closed state. As shown in Figure 10 , the rear door locking mechanism 186 includes a rear door hook assembly 1861, a connecting rod 1863, a crank 1865 and a hydraulic cylinder 1867.

[0075] The rear door hook assembly 1861 is pivotally arranged on the box body 180 and includes a hook 1861A, a hook connecting shaft 1861B and a driving handle 1861C. The hook connecting shaft 1861B is arranged on the box body 180 in parallel with the first pin shaft 1850 and is rotatable. The hook 1861A is fixed on the hook connecting shaft 1861B and selectively abuts against the rear door 185. The driving handle 1861C is fixed on the end of the hook connecting shaft 1861B. The hook 1861A, the hook connecting shaft 1861B and the driving handle 1861C can be fixed to each other by welding. The rear door hook assembly 1861 can include a plurality of hooks 1861A which are parallel to each other and spaced apart. The plurality of hooks 1861A which are parallel to each other can simultaneously abut against the rear door 185, so as to increase the stability of the rear door locking mechanism 186.

[0076] One end of the crank 1865 is hinged to the lower part of the box 180. One end of the oil cylinder 1867 is hinged to the lower part of the box 180 and is separated from the one end of the crank 1865 by a distance. One end of the connecting rod 1863 is hinged to the end of the driving handle 1861C of the rear door lock hook assembly 1861. The other end of the crank 1865, the other end of the oil cylinder 1867 and the other end of the connecting rod 1863 are hinged together.

[0077] Figure 11 is a partial side view of the electrically powered washing and sweeping vehicle 1 according to the present application, in which the rear door is in the open state. As Figure 11 shown, the contraction of the oil cylinder 1867 causes the crank 1865 to rotate counterclockwise. The crank 1865 drives the driving handle 1861C to rotate counterclockwise by means of the connecting rod 1863, which in turn causes the lock hook 1861A to rotate counterclockwise to release the locking of the rear door 185, so that the rear door 185 can be opened.

[0078] Returning to Figure 10 , after the rear door 185 is closed, the extension of the oil cylinder 1867 causes the crank 1865 to rotate clockwise. The crank 1865 drives the driving handle 1861C to rotate clockwise by means of the connecting rod 1863, which in turn causes the lock hook 1861A to rotate clockwise to press the rear door 185, so that the rear door 185 is tightly engaged with the sealing strip 184 to achieve the sealing effect.

[0079] Figure 12 is a force diagram of the rear door locking mechanism 186 of the electrically powered washing and sweeping vehicle 1 according to the present application. In Figure 12 , point A represents the hinge point of the oil cylinder 1867 and the box 180, point B represents the hinge point of the driving handle 1861C and the connecting rod 1863, point C represents the common hinge point of the crank 1865, the oil cylinder 1867 and the connecting rod 1863, and point D represents the hinge point of the crank 1865 and the box 180. As Figure 6 shown, when the oil cylinder 1867 is extended to the longest, points A and C are respectively on the two sides of the line connecting points B and D.

[0080] When the back door 185 is subjected to the force of rebound generated by the sealing strip 184, it generates a tendency to open, causing the crank 1865 to generate a tendency to rotate counterclockwise, which in turn exerts a force F on the connecting rod 1863 in the direction BC through point B. The force F can be decomposed into a component F1 in the direction CD and a component F2 in the direction CA. Since points A and C are on opposite sides of the line connecting points B and D, the direction of action of the component F2 is from point A to point C, i.e., the action on the oil cylinder 1867 is to stretch. At this time, since the oil cylinder 1867 has already been stretched to the maximum, it is naturally unable to continue to stretch, thereby generating a locking effect. In this way, the component F2 is counteracted by the reaction force of the oil cylinder 1867. On the other hand, since the crank 1865 cannot be compressed, the component F1 is counteracted by the reaction force of the crank 1865 against deformation. In summary, the resultant force F of the component F1 and the component F2 is counteracted, thereby preventing the tendency of the crank 1865 to rotate, and in turn preventing the tendency of the back door 185 to open. The back door 185 is thus locked and cannot be opened.

[0081] The electric washing and sweeping vehicle according to the present application can automatically lock the back door without adding a hydraulic lock, greatly reducing the modification cost and assembly man-hours of the washing and sweeping vehicle.

[0082] Although the general scope of the subject matter has been described with reference to particular exemplary embodiments, various modifications and changes can be made to these embodiments without departing from the broader scope of the embodiments of the present disclosure. Such embodiments of the subject matter can be referred to herein individually or collectively as an “invention” for convenience and are not intended to voluntarily limit the scope of the application to any single disclosure or concept unless such disclosure explicitly states otherwise. In fact, any combination of one or more aspects of the subject matter described herein should be considered within the scope of the present disclosure.

[0083] The embodiments described herein have been described in sufficient detail to enable those skilled in the art to practice the disclosed teachings. Other embodiments can be utilized and derived without departing from the scope of the disclosure, the scope of which is defined by the claims and the full scope of equivalents to which such claims are entitled. Accordingly, the specific embodiments should not be construed as limiting and various other embodiments can be derivable therefrom.

[0084] Conditional language, such as, among others, “can,” “could,” “might,” or “may,” unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain embodiments include, while other embodiments do not include, certain features, elements, and / or steps. Thus, such conditional language is not generally intended to imply that features, elements, and / or steps are in any way required in one or more embodiments or that one or more embodiments necessarily include logic for deciding, with or without user input or prompting, whether these features, elements, and / or steps are included or are to be performed in any particular embodiment.

Claims

1. An electric sweeper (1), characterized in that, Electric sweeper truck (1) includes: Chassis (10); The front axle (11) and rear axle (12) are mounted on the chassis (10); The battery module (14) is located on the side of the chassis (10) in the direction of travel of the electric sweeper (1) between the front axle (11) and the rear axle (12). The sweeping module (17) is located near the end of the chassis (10) in the direction of travel of the electric sweeper (1), and is not located between the front axle (11) and the rear axle (12); and A collection device (18) is pivotally mounted on a chassis (10) and connected to a sweeping module (17); The washing and sweeping module (17) includes: A sweeping disc assembly (172) is provided on the side of the chassis (10) transverse to the direction of travel of the sweeper (1), wherein the sweeping disc assembly (172) includes a sweeping disc (1720) and a sweeping disc locking hook (1725) configured to selectively lock the sweeping disc (1720). The collecting device (18) includes: A housing (180) having an opening communicating between the exterior and interior of the housing (180); a rear door (185) hinged to the housing (180) and configured to selectively cover the opening of the housing (180); and A rear door locking mechanism (186) is connected to the housing (180) and configured to selectively lock the rear door (185).

2. The electric sweeper (1) according to claim 1, characterized in that, Electric sweeper truck (1) includes: The cab (13) is located above the front axle (11) and connected to the chassis (10); The motor module (15) is located in the middle of the chassis (10) between the front axle (11) and the rear axle (12) and is connected to the battery module (14); An actuator module (16) is disposed in the middle of the chassis (10) between the front axle (11) and the rear axle (12), and is connected to the motor module (15) and the sweeping module (17); and The main water tank (19) is mounted on the chassis (10) between the cab (13) and the collection device (18).

3. The electric sweeper (1) according to claim 2, characterized in that, The actuator module (16) includes: A centrifugal fan (160) is optionally connected to a collection device (18); A high-pressure water pump (161) is connected to the main water tank (19); and A hydraulic oil pump (162) is connected to the collection device (18) and the washing module (17). The cleaning module (17) includes: A wide suction nozzle (170) is located below the chassis (10) and connected to the collection device (18), and is adjacent to the sweeping disc assembly (172); A high-pressure nozzle (171) is located below the chassis (10), behind the wide suction nozzle (170) along the driving direction, and connected to the high-pressure water pump; A rear nozzle (173) is located on the side of the sweeping disc assembly (172) away from the rear axle (12) and connected to a high-pressure water pump; and A pre-dust removal nozzle (174) is mounted on the chassis (10) on the side of the front axle (11) opposite to the rear axle (12) and connected to a high-pressure water pump; The collection device (18) includes: A garbage collection bin (182) is disposed within a container (180); A sealing strip (184), made of elastic material, is provided on the outer wall of the housing (180) and engages with the rear door (185) when the rear door (185) covers the housing opening of the housing (180).

4. The electric sweeper (1) according to claim 3, characterized in that, The sweeping assembly (172) includes: The sweeping support (1721) is fixed on the chassis (10); A sweeping disc connecting rod (1722) is hinged between the sweeping disc support (1721) and the sweeping disc (1720); a sweeping disc rotating arm (1723) is hinged between the sweeping disc support (1721) and the sweeping disc (1720), wherein the sweeping disc rotating arm (1723) has a protrusion (1727) near the end that is hinged to the sweeper and a locking pin (1728) is provided on the protrusion (1727); A telescopic lifting cylinder (1724) is hinged at one end to a sweeping disc support (1721) and at the other end to a protrusion (1727) of a sweeping disc rotating arm (1723). A retractable locking cylinder (1726) is hinged between the sweeping disc support (1721) and the sweeping disc locking hook (1725).

5. The electric sweeper (1) according to claim 4, characterized in that, The sweeping disc locking hook (1725) is hinged to the sweeping disc support (1721) between the sweeping disc connecting rod (1722) and the sweeping disc rotating arm (1723), and includes a hook portion (1725A) and a lug portion (1725B); The first side of the hook portion (1725A) is recessed inward and can optionally engage the locking pin (1728); The second side of the hook portion (1725A), opposite to the first side, bulges outward and can optionally engage the locking pin (1728) without engaging the first side of the hook portion (1725A); The shape of the sweeping disc locking hook (1725) is configured such that, when the locking pin (1728) engages on the first side of its hook portion (1725A), in a plane perpendicular to the hinge axis of the sweeping disc arm (1723) and the sweeping disc support (1721), the line connecting the hinge axis of the sweeping disc arm (1723) and the sweeping disc support (1721) to the hinge axis of the sweeping disc locking hook (1725) and the sweeping disc support (1721) is perpendicular to the line connecting the hinge axis of the sweeping disc locking hook (1725) and the sweeping disc support (1721) to the locking pin (1728) of the sweeping disc arm (1723).

6. The electric sweeper (1) according to claim 4, characterized in that, The sweeping link (1722) and the sweeping arm (1723) are parallel to each other and have approximately equal lengths; The locking cylinder (1726) is a single-acting self-resetting cylinder, and its free state is the retracted state; as well as The locking cylinder (1726) includes a piston rod and an internal spring, and is configured to extend the piston rod when compressed air is introduced, and to return to the contracted state by means of the internal spring when compressed air is discharged.

7. The electric sweeper (1) according to claim 5, characterized in that, The sweeping assembly (172) includes a first position, a second position, a third position, a fourth position, and a fifth position; In the first position, the first side of the hook portion (1725A) of the sweeping disc locking hook (1725) engages the locking pin (1728) to prevent the locking pin (1728) from moving away from the sweeping disc support (1721), thereby preventing the sweeping disc arm (1723) from rotating counterclockwise. In the second position, the locking cylinder (1726) extends to drive the sweeping disc locking hook (1725) to rotate around its hinge point with the sweeping disc support (1721), disengaging from the locking pin (1728), thereby releasing the limit on the sweeping disc rotating arm (1723). In the third position, the lifting cylinder (1724) extends to drive the sweeping disc arm (1723) to rotate counterclockwise around its hinge point with the sweeping disc support (1721), thereby lowering the sweeping disc (1720). In the fourth position, the locking cylinder (1726) retracts back to its free state under the action of its internal spring; and In the fifth position, the lifting cylinder (1724) retracts to lift the sweeping disc arm (1723), and the locking pin (1728) of the sweeping disc arm (1723) engages the hook portion (1725A) of the sweeping disc lock hook (1725) on the second side opposite to the first side and presses the sweeping disc lock hook (1725) so that the locking cylinder (1726) is stretched.

8. The electric sweeper (1) according to claim 3, characterized in that, The collecting device (18) has a hollow portion (183) in the housing (180) for selectively accommodating the motor module (15) and the actuator module (16); The rear door (185) is hinged to the housing (180) by means of a first pin (1850) provided thereon.

9. The electric sweeper (1) according to claim 3, characterized in that, The rear door locking mechanism (186) includes: A locking hook assembly (1861) is pivotally mounted on a housing (180) and includes a locking hook (1861A), a locking hook connecting shaft (1861B), and a drive handle (1861C). The locking hook connecting shaft (1861B) is parallel to and rotatably mounted on the housing (180) and a first pin (1850). The locking hook (1861A) is fixed to the locking hook connecting shaft (1861B) and can optionally abut against a rear door (185). The drive handle (1861C) is fixed to the end of the locking hook connecting shaft (1861B). The connecting rod (1863) has one end hinged to the end of the drive handle (1861C) of the lock hook assembly (1861); A crank (1865), one end of which is hinged to the lower part of the housing (180); and The cylinder (1867) is hinged at one end to the lower part of the housing (180) and separated from one end of the crank (1865).

10. The electric sweeper (1) according to claim 9, characterized in that, The lock hook assembly (1861) includes a plurality of lock hooks (1861A) that are parallel to each other and spaced apart; The locking hook (1861A), the locking hook connecting shaft (1861B), and the drive handle (1861C) are fixed to each other by welding; The other end of the crank (1865), the other end of the cylinder (1867), and the other end of the connecting rod (1863) are hinged together; and When the cylinder (1867) is extended to its maximum length, the hinge point between the cylinder (1867) and the housing (180), as well as the common hinge point of the crank (1865), the cylinder (1867), and the connecting rod (1863), are located on both sides of the line connecting the hinge point between the drive handle (1861C) and the connecting rod (1863) to the hinge point between the crank (1865) and the housing (180).

11. The electric sweeper (1) according to claim 3, characterized in that, The front axle (11) has front wheels (110) at both ends; The rear axle (12) is equipped with rear wheels (120) at both ends; The battery module (14) includes two side-mounted battery frames (140) and multiple batteries disposed in the side-mounted battery frames (140); Two side-mounted battery racks (140) are respectively installed on the two sides of the chassis (10) transverse to the driving direction of the electric sweeper (1); and The number of batteries in each side-mounted battery compartment (140) is equal.

12. The electric sweeper (1) according to claim 11, characterized in that, The motor module (15) includes: A centrifugal fan motor (150) is connected to a centrifugal fan (160) and drives the centrifugal fan (160) to extract air from the collection device (18); A high-pressure water pump motor (151), connected to and driving the high-pressure water pump (161), pumps water from the main water tank (19) to the sweeping module (17) and increases the water pressure; and A hydraulic pump motor (152) drives a hydraulic pump (162) to provide power to the collection device (18) and the sweeping module (17).

13. The electric sweeper (1) according to claim 3, characterized in that, The cleaning module (17) includes multiple wide suction nozzles (170); These wide suction nozzles (170) extend one after another across the entire width of the electric sweeper (1) in the direction of travel, to substantially cover the entire width of the electric sweeper (1). The high-pressure nozzle (171) and the pre-dust removal nozzle (174) each include multiple nozzles (1710); and These nozzles (1710) extend one after another across the entire width of the electric sweeper (1) in the direction of travel, to substantially cover the entire width of the electric sweeper (1).

14. The electric sweeper (1) according to claim 3, characterized in that, The collection device (18) includes an auxiliary water tank (181) which is located in the tank body (180) and connected to a high-pressure water pump (161) for providing additional clean water reserves for the washing and sweeping module (17).

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