Snow blower and gardening tools

Abstract

The present invention provides a snow sweeper and a gardening tool. The snow sweeper includes a power system, a handrail disposed at the rear side of the power system, a self-propelled system and a main blade system. The power system includes a motor. The self-propelled system and the main blade system use the same motor as the driving source. The self-propelled system is connected to the motor through a first transmission device, and the main blade system is connected to the motor through a second transmission device. The first transmission device and the second transmission device are independent of each other to respectively control the start or stop of the corresponding self-propelled system and main blade system. Compared with the prior art, the present invention can maximize the output power and output torque of the main blade system and the self-propelled system without increasing the total power.

Description

Technical Field

[0001] The present invention relates to the technical field of gardening tools, and particularly to a snow sweeper and gardening tools. Background Art

[0002] Traditional lithium - battery snow sweepers use one set of electronic control to separately control the main blade system and another set of electronic control to separately control the self - propelled system. When the main blade and the self - propelled system work simultaneously, the two sets of motors are separately loaded, and the output powers are also separated. As a result, there is a large difference in the output powers of the self - propelled motor and the main blade motor, and the synchronism of mutual matching is poor, making it difficult to exert the maximum power and maximum torque of the motors. Furthermore, the performance of the main blade and the self - propelled of the whole machine is relatively poor.

[0003] In addition, the separate control of the powers of the two sets of motors limits the exertion of the maximum output power and maximum torque of the main blade motor and the self - propelled motor of the whole machine, and the cost of the design scheme of the two sets of electronic controls is also very high.

[0004] In view of this, it is indeed necessary to improve the existing lithium - battery snow sweeper to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a snow sweeper in which the self - propelled system and the main blade system use the same motor as the driving source, and while the total power does not increase, the output power and output torque of the main blade system and the self - propelled system are maximized.

[0006] To achieve the above purpose, the present invention provides a snow sweeper, including a power system and a handrail arranged at the rear side of the power system. The power system includes a motor and a housing covering the outside of the motor. The snow sweeper further includes a self - propelled system and a main blade system. The self - propelled system and the main blade system use the same motor as the driving source. The self - propelled system is connected to the motor through a first transmission device, and the main blade system is connected to the motor through a second transmission device. The first transmission device and the second transmission device are independent of each other to separately control the start or stop of the corresponding self - propelled system and main blade system.

[0007] As a further improvement of the present invention, the first transmission device includes a first transmission wheel connected to the output shaft of the motor, a second transmission wheel connected to the self - propelled system, a first transmission member connecting the first transmission wheel and the second transmission wheel, and a first tensioning wheel located beside the first transmission member. When the motor rotates, it outputs a driving force to the first transmission wheel, and transmits it to the second transmission wheel through the first transmission member and the first tensioning wheel to start the self - propelled system.

[0008] As a further improvement of the present invention, the first transmission device further includes a self - walking handle pressing piece disposed on the armrest, a first cable connected to the self - walking handle pressing piece, and a first connection assembly for driving the second transmission wheel to move. The first connection assembly is connected to the first cable. The self - walking system includes self - walking tires and a friction disc cooperating with the self - walking tires. After pressing the self - walking handle pressing piece, the first cable drives the second transmission wheel to move through the first connection assembly, so that the second transmission wheel contacts the friction disc, and the self - walking system is started.

[0009] As a further improvement of the present invention, the first connection assembly includes a connecting plate fixedly connecting the first cable and the second transmission wheel, and a first spring elastically connecting the first cable and the housing. After pressing the self - walking handle pressing piece, the first cable pulls the connecting plate, so that the second transmission wheel moves toward the friction disc side; after releasing the self - walking handle pressing piece, the first cable and the connecting plate reset under the elastic force of the first spring, so that the second transmission wheel disengages from the friction disc, and the self - walking system stops.

[0010] As a further improvement of the present invention, the first transmission device further includes a fixing plate assembly connected to the second transmission wheel. One end of the connecting plate is connected to the first cable, and the other end is connected to the fixing plate assembly, so that after pressing or releasing the self - walking handle pressing piece, the second transmission wheel moves under the drive of the fixing plate assembly.

[0011] As a further improvement of the present invention, there are two self - walking tires. The self - walking system further includes an axle connecting the two self - walking tires, a first rotating wheel sleeved on the axle, a fixed shaft passing through the friction disc, and a second rotating wheel fixed on the fixed shaft. The first rotating wheel and the second rotating wheel cooperate with each other, so that after the second transmission wheel contacts the friction disc, the self - walking power is transmitted to the friction disc and the self - walking tires, causing the self - walking tires to rotate.

[0012] As a further improvement of the present invention, the self - walking system further includes a switching device for adjusting the self - walking direction and speed. The switching device includes an operating handle disposed on the armrest, a connecting rod connected to the operating handle, a slider connected to the friction disc, and a crank connecting the connecting rod and the slider. When operating the operating handle, the connecting rod moves up and down, the crank rotates and drives the slider and the friction disc to slide left and right along the fixed shaft.

[0013] As a further improvement of the present invention, the first tensioning wheel always presses the first transmission member.

[0014] As a further improvement of the present invention, the second transmission device includes a first transmission wheel connected to the output shaft of the motor, a second transmission wheel connected to the main knife system, a second transmission member connecting the first transmission wheel and the second transmission wheel, and a second tensioning wheel located beside the second transmission member. When the motor rotates, it outputs driving force to the first transmission wheel, and under the tensioning effect of the second tensioning wheel on the second transmission member, it is transmitted to the second transmission wheel to start the main knife system.

[0015] As a further improvement of the present invention, the second transmission device further includes a main knife handle pressing piece provided on the armrest, a second cable connected to the main knife handle pressing piece, and a second connecting member connecting the second cable and the second tensioning wheel. After pressing the main knife handle pressing piece, the second cable drives the second connecting member to move, so that the second tensioning wheel presses the second transmission member, the second transmission wheel rotates, and the main knife system starts.

[0016] As a further improvement of the present invention, the second transmission device further includes a second spring with one end connected to the housing and the other end connected to the second connecting member. After releasing the main knife handle pressing piece, the second tensioning wheel and the second connecting member reset under the restoring force of the second spring, the second tensioning wheel disengages from the second transmission member, and the main knife system stops.

[0017] As a further improvement of the present invention, the main knife system includes a snow throwing impeller and a worm and worm gear box coaxially arranged with the second transmission wheel, a snow rolling knife assembly connected to the worm and worm gear box, and a snow sweeping cover covering the outside of the worm and worm gear box and the snow rolling knife assembly. The worm and worm gear box is provided with a worm shaft. The second transmission wheel and the snow throwing impeller are both fixedly connected to the worm shaft, and the snow throwing impeller is arranged close to the second transmission wheel.

[0018] As a further improvement of the present invention, the main knife system further includes a snow throwing cylinder covering the outside of the snow throwing impeller and a snow discharging cylinder assembly connected to the snow throwing cylinder. The snow throwing impeller is used to throw the snow swept into the snow throwing cylinder by the snow rolling knife assembly out from the snow discharging cylinder assembly.

[0019] As a further improvement of the present invention, the output shaft of the motor is placed horizontally.

[0020] As a further improvement of the present invention, the first transmission member or the second transmission member is a belt.

[0021] The purpose of the present invention is to provide a gardening tool. The self - propelled system and the main knife system of this gardening tool use the same motor as the driving source, achieving the maximization of the output power and output torque of the main knife system and the self - propelled system while not increasing the total power.

[0022] To achieve the above object, the present invention provides a gardening tool, which includes a power system and a handrail disposed at the rear side of the power system. The power system includes a motor and a housing covering the outside of the motor. The gardening tool further includes a self-propelling system and a main blade system. The self-propelling system and the main blade system use the same motor as the driving source. The self-propelling system is connected to the motor through a first transmission device, and the main blade system is connected to the motor through a second transmission device. The first transmission device and the second transmission device are independent of each other to respectively control the start or stop of the corresponding self-propelling system and main blade system.

[0023] As a further improvement of the present invention, the first transmission device includes a first transmission wheel connected to the output shaft of the motor, a second transmission wheel connected to the self-propelling system, a first transmission member connecting the first transmission wheel and the second transmission wheel, and a first tensioning wheel located beside the first transmission member. When the motor rotates, it outputs a driving force to the first transmission wheel, and transmits it to the second transmission wheel through the first transmission member and the first tensioning wheel, so as to start the self-propelling system.

[0024] As a further improvement of the present invention, the first transmission device further includes a self-propelling handle pressing piece disposed on the handrail, a first cable connected to the self-propelling handle pressing piece, a connecting plate fixedly connecting the first cable and the second transmission wheel, and a first spring elastically connecting the first cable and the housing. The self-propelling system includes self-propelling tires and a friction disc cooperating with the self-propelling tires. After pressing the self-propelling handle pressing piece, the first cable pulls the connecting plate, so that the second transmission wheel moves to contact the friction disc, and the self-propelling system starts; after releasing the self-propelling handle pressing piece, the first cable and the connecting plate reset under the elastic force of the first spring, so that the second transmission wheel disengages from the friction disc, and the self-propelling system stops.

[0025] As a further improvement of the present invention, the second transmission device includes a first driving wheel connected to the output shaft of the motor, a second driving wheel connected to the main blade system, a second transmission member connecting the first driving wheel and the second driving wheel, and a second tensioning wheel located beside the second transmission member. When the motor rotates, it outputs a driving force to the first driving wheel, and transmits it to the second driving wheel under the tensioning action of the second tensioning wheel on the second transmission member, so as to start the main blade system.

[0026] As a further improvement of the present invention, the second transmission device further includes a main knife handle pressing piece disposed on the armrest, a second cable connected to the main knife handle pressing piece, a connecting member connecting the second cable and the second tensioning wheel, and a second spring having one end connected to the housing and the other end connected to the connecting member. After pressing the main knife handle pressing piece, the second cable drives the connecting member to move, so that the second tensioning wheel presses the second transmission member and the second transmission wheel rotates, and the main knife system is started; after releasing the main knife handle pressing piece, the second tensioning wheel and the connecting member are reset under the restoring force of the second spring, the second tensioning wheel is disengaged from the second transmission member, and the main knife system stops.

[0027] The beneficial effects of the present invention are as follows: The snow sweeper of the present invention designs the self-propelled system and the main knife system to use the same motor as the driving source (that is, share the same motor output shaft). At the same time, the self-propelled system and the motor are designed to be connected by a first transmission device, and the main knife system and the motor are designed to be connected by a second transmission device, and the first transmission device and the second transmission device are independent of each other. Thus, the self-propelled system and the main knife system can be separately controlled to start or stop, or the self-propelled system and the main knife system can be simultaneously controlled to start or stop. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a partial exploded view of the snow sweeper of the present invention.

[0029] Figure 2 is Figure 1 a perspective schematic diagram of the snow sweeper shown with a part of the housing removed.

[0030] Figure 3 is Figure 2 a perspective schematic diagram of the snow sweeper shown with the main knife system removed.

[0031] Figure 4 is Figure 3 a partial enlarged view of a part of the structure of

[0032] Figure 5 is Figure 3 a schematic diagram of the structure when the self-propelled system and the first transmission device cooperate in

[0033] Figure 6 is Figure 5 a partial structure schematic diagram of

[0034] Figure 7 is Figure 6 a partial enlarged view of a part of the structure of

[0035] Figure 8 is Figure 7 a partial structure schematic diagram of

[0036] Figure 9 isFigure 8 Another perspective schematic diagram.

[0037] Figure 10 is Figure 8 Another perspective schematic diagram.

[0038] Figure 11 is Figure 2 Schematic diagram of the structure when the second transmission device in [reference] cooperates with the main knife system.

[0039] Figure 12 is Figure 11 Partial structure schematic diagram of [reference]. Detailed implementation manners

[0040] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] As Figure 1 shown, the present invention discloses a garden tool 100, which includes a power system 10, a handrail assembly 20 disposed behind the power system 10, and a self-propelled system and a main knife system connected to the power system 10. The power system 10 may be an integrally detachable power head, or may be composed of a fixed motor and a detachable housing assembly, and there is no limitation here. The self-propelled system and the main knife system use the same motor as the drive source (that is, share the same motor output shaft) to maximize the output power and output torque of the main knife system and the self-propelled system while not increasing the total power. The garden tool 100 of the present invention is applicable to lithium battery garden tools such as lawn mowers and snow blowers, or other outdoor power equipment. Hereinafter, a snow blower will be taken as an example for detailed description.

[0042] As Figures 2 to 10 and in combination with Figure 1 shown, the power system 10 includes a motor 11, a battery pack group 12, a PCB (not shown), and a housing 13 for accommodating the motor 11, the battery pack group 12, and the PCB. The motor 11 is used to provide driving force for the self-propelled system and the main knife system (including a snow blowing system and a snow throwing system), and the battery pack group 12 is used to provide power for the motor 11 to make the motor 11 work. A battery cavity 101 for accommodating the battery pack group 12 is formed in the housing 13, and there are two or several battery cavities 101 for placing two or several battery pack groups 12. The housing 13 includes a battery cover 102 for covering the battery cavity 101. After the battery pack group 12 is placed in the battery cavity 101, it is covered by the battery cover 102, which can protect the battery pack group 12 from rain and dust.

[0043] The armrest assembly 20 extends upward and backward from the rear of the housing 13. The armrest assembly 20 includes a left armrest 21 and a right armrest 22 which are arranged opposite to each other left and right. An operation panel 23 is connected between the top of the left armrest 21 and the top of the right armrest 22. An operation handle 24 is provided on the operation panel 23. The operation handle 24 can be used to control the snow sweeper 100 to move forward or backward, as well as the speed of moving forward or backward; of course, it should not be limited to this. Thus, it can be seen that the armrest assembly 20 can not only be used to push the snow sweeper 100 forward, but also change the traveling speed and direction of the snow sweeper 100 by means of the operation panel 23, which is convenient for the operator to operate. In addition, anti-slip portions 25 can also be provided at the tops of the left armrest 21 and the right armrest 22 to enhance the feel of the operator during operation.

[0044] The motor 11 is provided with an output shaft 111. The output shaft 111 is placed horizontally (parallel to the ground or approximately parallel to the ground); of course, when applied to gardening tools such as lawn mowers or other outdoor power equipment, the output shaft 111 can also be placed vertically (perpendicular to the ground or approximately perpendicular to the ground), and there is no limitation here. The self-propelled system is connected to the output shaft 111 through a first transmission device 30. The main blade system is connected to the output shaft 111 through a second transmission device 50. The first transmission device 30 and the second transmission device 50 are independent of each other to respectively control the start or stop of the corresponding self-propelled system and main blade system. In other words, when the first transmission device 30 controls the start or stop of the self-propelled system, the second transmission device 50 may not work, or may also control the start or stop of the main blade system at the same time, and they do not affect each other. Preferably, on the snow sweeper, the second transmission device 50 is arranged near the front end, and the first transmission device 30 is arranged near the rear end.

[0045] Specifically, the first transmission device 30 includes a first transmission wheel 31 connected to the output shaft 111, a second transmission wheel 32 connected to the self-propelled system, a first transmission member 33 connecting the first transmission wheel 31 and the second transmission wheel 32, and a first tensioning wheel 34 located beside the first transmission member 33. Thus, when the motor 11 rotates, the driving force can be output from the output shaft 111 to the first transmission wheel 31, and then transmitted to the second transmission wheel 32 through the first transmission member 33 and the first tensioning wheel 34 to start the self-propelled system.

[0046] The first tensioning wheel 34 is installed by means of a plate-like structure 342. One end of the tension spring 341 is fixed to the housing 13, and the other end is fixed to the plate-like structure 342, so that the first tensioning wheel 34 can more reliably press the first transmission member 33 all the time under the action of the tension spring 341. In the present invention, the first transmission wheel 31 and the second transmission wheel 32 are both belt wheels, and the first transmission member 33 is a belt, so as to realize the power transmission between the motor output shaft 111 and the self-propelled system; of course, according to the actual situation, the first transmission wheel 31, the second transmission wheel 32 and the first transmission member 33 can also be designed into a sprocket structure or other similar structures, which can also realize the power transmission between the motor output shaft 111 and the self-propelled system. For the convenience of description, the following will take the belt wheel as an example to describe the specific structure of the first transmission device 30, and define the first transmission wheel 31 as the first small belt wheel 31, the second transmission wheel 32 as the first large belt wheel 32, and the first transmission member 33 as the first belt 33.

[0047] The first transmission device 30 further includes a self-propelled handle pressing piece 35 arranged on the armrest assembly 20, a first cable 36 connected to the self-propelled handle pressing piece 35, and a first connecting assembly 37 for driving the first large belt wheel 32 to move. The first connecting assembly 37 is connected to the first cable 36 to drive the first large belt wheel 32 to move under the drive of the first cable 36. The self-propelled system includes a self-propelled tire 41 and a friction disc 42 cooperating with the self-propelled tire 41. Thus, after pressing the self-propelled handle pressing piece 35, the first cable 36 can be driven to move upward. Then, the first cable 36 drives the first large belt wheel 32 to move through the first connecting assembly 37, so that the first large belt wheel 32 contacts the friction disc 42, and at this time the self-propelled system starts.

[0048] Preferably, the first connecting assembly 37 includes a connecting plate 371 fixedly connecting the first cable 36 and the first large belt wheel 32, and a first spring 372 elastically connecting the first cable 36 and the housing 13. Thus, after pressing the self-propelled handle pressing piece 35, the first cable 36 directly pulls the connecting plate 371, so that the first large belt wheel 32 moves toward the side of the friction disc 42 until the first large belt wheel 32 contacts the friction disc 42, and at this time the self-propelled system starts; after releasing the self-propelled handle pressing piece 35, the first cable 36 and the connecting plate 371 will reset under the elastic force of the first spring 372, so that the first large belt wheel 32 disengages from the friction disc 42, and at this time the self-propelled system stops.

[0049] In this embodiment, one end of the first spring 372 is fixedly connected to both the first cable 36 and the connecting plate 371 at the same time, and the other end is fixedly connected to the housing 13 through a shaft-like member 373, so as to realize the stretching and contraction stability of the first spring 372. Details are not described here and no limitation is made either.

[0050] The first transmission device 30 further includes a fixing plate assembly 38 connected to the first large pulley 32. One end of the connecting plate 371 is connected to the first cable 36, and the other end is connected to the fixing plate assembly 38. Thus, after pressing or releasing the self-propelled handle piece 35, the first large pulley 32 will move under the drive of the fixing plate assembly 38. In other words, the first large pulley 32 is not directly connected to the first cable 36, but is fixedly connected to the first cable 36 through the fixing plate assembly 38 and the connecting plate 371, ensuring the free rotation of the first large pulley 32.

[0051] A fixing shaft 321 protrudes from the central position of the first large pulley 32. A through hole (not labeled) for the fixing shaft 321 to pass through and a bearing 381 accommodated in the through hole are provided at the central position of the fixing plate assembly 38. The fixing shaft 321 of the first large pulley 32 passes through the bearing 381 and is axially locked and fixed by a nut (not shown), thereby realizing the connection between the first large pulley 32 and the fixing plate assembly 38. At the same time, the first large pulley 32 can also rotate relative to the fixing plate assembly 38 around the bearing 381. One end of the fixing plate assembly 38 is sleeved on a circular shaft 382 and can rotate relative to the circular shaft 382. Both ends of the circular shaft 382 are fixed to the housing 13. A claw 383 is provided at the other end of the fixing plate assembly 38. The claw 383 is arranged close to the shaft-like member 373. The connecting plate 371 is fixed to one side of the claw 383 of the fixing plate assembly 38. Thus, when the first cable 36 pulls the connecting plate 371, the fixing plate assembly 38 can be driven to rotate around the circular shaft 382. With the cooperation of the claw 383 and the shaft-like member 373, the rotation distance of the fixing plate assembly 38 relative to the circular shaft 382 can be limited.

[0052] It should be noted that: 1. The self-propelled handle piece 35 can be arranged at the top of the left armrest 21 or at the top of the right armrest 22; 2. The first cable 36 can be a single component or a combination formed by multiple components, as long as it can connect the self-propelled handle piece 35 and the connecting plate 371, and there is no limitation here.

[0053] There are two self-propelled tires 41 provided. The self-propelled system further includes an axle 43 connecting the two self-propelled tires 41, a first rotating wheel 44 sleeved on the axle 43, a fixed shaft 45 passing through the friction disc 42, and a second rotating wheel 46 fixed on the fixed shaft 45. The first rotating wheel 44 and the second rotating wheel 46 cooperate with each other to transmit the self-propelled power to the friction disc 42 and the self-propelled tires 41 after the first large pulley 32 contacts the friction disc 42, so that the self-propelled tires 41 rotate, thereby realizing the self-propulsion of the snow sweeper 100. In this embodiment, both the first rotating wheel 44 and the second rotating wheel 46 are gears and the diameter of the first rotating wheel 44 is larger than that of the second rotating wheel 46. Thus, not only can the transmission of the self-propelled power be realized by the gear meshing of the first rotating wheel 44 and the second rotating wheel 46, but also deceleration can be achieved, enabling the self-propelled tires 41 to travel at a normal speed.

[0054] Of course, the first rotating wheel 44 and the second rotating wheel 46 can also be sprockets or other structures as long as they can realize the transmission and speed change of the self-propelled power. For the convenience of description, the present invention will be specifically described taking gears as an example. The first rotating wheel 44 is the first gear 44 and the second rotating wheel 46 is the second gear 46.

[0055] The first gear 44 is arranged close to one of the self-propelled tires 41, and this first gear 44 is a metal reduction gear. The fixed shaft 45 is fixed to the friction disc 42 to drive the fixed shaft 45 to rotate synchronously when the friction disc 42 rotates; the second gear 46 is arranged opposite to the first gear 44 so that when the fixed shaft 45 rotates, the first gear 44 is driven to rotate through the mutual meshing of the first gear 44 and the second gear 46, and then the self-propelled tires 41 are driven to rotate to realize self-propulsion; the outer ring of the friction disc 42 is made of rubber material. A differential can also be selectively added to the axle 43 of the self-propelled tires 41 to facilitate easy turning.

[0056] The startup process of the self-propelled system can be briefly described as follows: After the snow blower 100 is started, the self-propelled power is first transmitted through the first small pulley 31 fixed on the output shaft 111 and the first belt 33 to the first large pulley 32. Since the first belt 33 is always pressed by the first tension pulley 34, the first large pulley 32 rotates and can transmit the self-propelled power. However, at this time, the first large pulley 32 and the friction disc 42 are in a disengaged state. Next, when the self-propelled handle piece 35 is pressed, the first cable 36 pulls the connecting plate 371 and the first spring 372, stretching the first spring 372. At this time, the fixed plate assembly 38 will rotate around the circular shaft 382 toward the friction disc 42 side driven by the connecting plate 371 (that is, the side of the claw 383 of the fixed plate assembly 38 rotates around the circular shaft 382 toward the shaft-like component 373), so as to drive the first large pulley 32 to rotate toward the friction disc 42 side. Finally, the side surface of the first large pulley 32 facing the friction disc 42 contacts and adheres tightly to the friction disc 42. The friction disc 42 starts to rotate driven by the first large pulley 32, and the fixed shaft 45 and the second gear 46 rotate synchronously. Under the meshing action of the first gear 44 and the second gear 46, the self-propelled tire 41 starts to rotate, and at this time, the self-propelled system is officially started.

[0057] The shutdown process of the self-propelled system can be briefly described as follows: After the self-propelled handle piece 35 is released, the first cable 36 becomes slack, and the connecting plate 371 will reset under the elastic force of the first spring 372. At the same time, the first large pulley 32 and the fixed plate assembly 38 will rotate around the circular shaft 382 away from the friction disc 42 side driven by the connecting plate 371, disengaging the first large pulley 32 from the friction disc 42. At this time, even if the motor 11 continues to rotate, only the first large pulley 32 rotates with it, and both the friction disc 42 and the self-propelled tire 41 stop rotating, and the self-propelled system stops. Thus, it can be seen that when not working, because the self-propelled power is in a disengaged state, when the battery runs out of power or has insufficient power, it is easier for the user to push or move the snow blower 100 by hand; at the same time, because the friction disc 42 is disengaged from the first large pulley 32, the resistance is smaller and it is more labor-saving when pushing by hand.

[0058] The self-propelled system further includes a switching device 47 for adjusting the self-propelled direction (forward or backward) and the self-propelled speed. The switching device 47 includes the aforementioned operating handle 24 provided on the operation panel 23 and beside the self-propelled handle piece 35, a connecting rod 471 connected to the operating handle 24, a slider 472 connected to the friction disc 42, and a crank 473 connecting the connecting rod 471 and the slider 472. When operating the operating handle 24, it drives the connecting rod 471 to move up and down. During the up and down movement of the connecting rod 471, it will drive the crank 473 to rotate, and then drive the slider 472 and the friction disc 42 to slide left and right along the fixed shaft 45.

[0059] The switching device 47 further includes a pressing plate 474 connecting the connecting rod 471 and the crank 473, and a bushing 475 provided on the fixed shaft 45. The bushing 475 is used to connect the slider 472 and the friction disk 42. One end of the pressing plate 474 is connected to the connecting rod 471, and the other end is fixedly connected to the crank 473. Thus, when the connecting rod 471 moves up and down, the crank 473 can be driven to rotate by the pressing plate 474. During operation, first move the operating handle 24 forward or backward to make the connecting rod 471 move up and down. Then, driven by the pressing plate 474, the crank 473 rotates. The crank 473 synchronously pulls the slider 472, the bushing 475 and the friction disk 42 to move left and right on the fixed shaft 45, so that the friction disk 42 moves left and right relative to the center of the first large pulley 32, thereby achieving the switching of the forward and backward directions of self-propulsion and the change of speed. Only one operating handle 24 is provided to adjust the self-propulsion direction and the self-propulsion speed.

[0060] It can be seen from this that the setting of the switching device 47 can realize the switching of the forward or backward direction of the snow sweeper 100 and the change of the forward or backward speed.

[0061] Such as Figure 11 And Figure 12 And in combination with Figure 1 And Figure 4 As shown, the second transmission device 50 includes a first transmission wheel 51 connected to the output shaft 111 of the motor 11, a second transmission wheel 52 connected to the main knife system, a second transmission member 53 connecting the first transmission wheel 51 and the second transmission wheel 52, and a second tensioning wheel 54 located beside the second transmission member 53. Thus, when the motor 11 rotates, the driving force can be output from the output shaft 111 to the first transmission wheel 51 and the second transmission member 53, and then transmitted to the second transmission wheel 52 under the tensioning action of the second tensioning wheel 54 on the second transmission member 53 to start the main knife system.

[0062] In the present invention, both the first transmission wheel 51 and the second transmission wheel 52 are belt wheels, and the second transmission member 53 is a belt, so as to realize the power transmission between the output shaft 111 of the motor and the main knife system. Of course, according to the actual situation, the first transmission wheel 51, the second transmission wheel 52 and the second transmission member 53 can also be designed into a sprocket structure or other similar structures, which can also realize the power transmission between the output shaft 111 of the motor and the main knife system. For the convenience of description, the following will describe the specific structure of the second transmission device 50 taking the belt wheel as an example, and define the first transmission wheel 51 as the second small belt wheel 51, the second transmission wheel 52 as the second large belt wheel 52, and the second transmission member 53 as the second belt 53.

[0063] Preferably, the first belt 33 and the second belt 53 can be ordinary V-belts or synchronous belts, or multi-wedge belts or triangular belts, etc.; and the number of both the first belt 33 and the second belt 53 is greater than or equal to 1.

[0064] The second transmission device 50 further includes a main knife handle pressing piece 55 disposed on the armrest assembly 20, a second cable 56 connected to the main knife handle pressing piece 55, a second connecting member 57 connecting the second cable 56 and the second tension pulley 54, and a second spring 58 with one end connected to the housing 13 and the other end connected to the second connecting member 57. Thus, after pressing the main knife handle pressing piece 55, the second cable 56 will drive the second connecting member 57 to move, causing the second tension pulley 54 to press the second belt 53 and the second large pulley 52 to rotate. At this time, the main knife system is activated; and after releasing the main knife handle pressing piece 55, the second tension pulley 54 and the second connecting member 57 will reset under the restoring force of the second spring 58, causing the second tension pulley 54 to disengage from the second belt 53. At this time, the main knife system stops.

[0065] The second connecting member 57 is generally arranged in a T shape and is rotatable, including a connecting shaft 571 connected to the second cable 56 and a connecting block 572 disposed perpendicular to the connecting shaft 571. The connecting shaft 571 and the connecting block 572 are fixedly connected as a whole. The second tension pulley 54 is connected to the top of the connecting block 572, and the second spring 58 is connected to the bottom of the connecting block 572. Thus, when the second cable 56 pulls the swing arm block 59 to move upward, it will pull the connecting shaft 571 together with the connecting block 572 to rotate. At this time, the second tension pulley 54 moves toward the second belt 53 side and presses the second belt 53, and the second spring 58 is stretched; and after releasing the main knife handle pressing piece 55, the second cable 56 becomes slack. At this time, the second spring 58 will pull the bottom of the connecting block 572 to rotate to restore it to the initial state, and the second tension pulley 54 disengages from the second belt 53.

[0066] It should be noted that: 1. The main knife handle pressing piece 55 can be disposed on the top of the left armrest 21 or on the top of the right armrest 22, as long as it can be distinguished from the self-propelled handle pressing piece 35 and is on the opposite side of each other; 2. The second cable 56 can be a single component or an assembly formed by combining multiple components, as long as it can connect the main knife handle pressing piece 55 and the second connecting member 57, and there is no limitation here.

[0067] The main blade system includes a snow throwing impeller 61 and a worm and worm gear box 62 coaxially arranged with the second large pulley 52, a snow rolling knife assembly 63 connected to the worm and worm gear box 62, and a snow sweeping cover 64 covering the outer sides of the worm and worm gear box 62 and the snow rolling knife assembly 63. The worm and worm gear box 62 is provided with a worm shaft 621. Both the second large pulley 52 and the snow throwing impeller 61 are fixedly connected to the worm shaft 621, and the snow throwing impeller 61 is arranged close to the second large pulley 52. When the second large pulley 52 rotates, it synchronously drives the worm shaft 621 and the snow throwing impeller 61 to rotate, and then transmits the driving force output by the motor 11 to the worm and worm gear box 62, causing the snow rolling knife assembly 63 to start working. Of course, the worm and worm gear box 62 can also perform a speed reduction action during the process of transmitting the driving force, so that the rotation speed of the snow rolling knife assembly 63 is significantly lower than the rotation speed of the motor 11, and the snow rolling knife assembly 63 can work at a normal speed.

[0068] The main blade system further includes a snow throwing cylinder 65 covering the outer side of the snow throwing impeller 61 and a snow discharging cylinder assembly 66 connected to the snow throwing cylinder 65. The snow throwing impeller 61 is used to throw the snow swept into the snow throwing cylinder 65 by the snow rolling knife assembly 63 out from the snow discharging cylinder assembly 66.

[0069] Since the structures of the worm and worm gear box 62, the snow rolling knife assembly 63, the snow sweeping cover 64, the snow throwing cylinder 65 and the snow discharging cylinder assembly 66 can all adopt existing technical solutions, they will not be described in detail here.

[0070] The startup process of the main blade system can be briefly described as follows: After the snow sweeper 100 starts, the main blade power is first transmitted through the second small pulley 51 fixed on the output shaft 111 and the second belt 53. At this time, the second belt 53 is in a non-tensioned state and the second large pulley 32 does not rotate. Next, press the main blade handle pressing piece 55. While the second cable 56 pulls the swing arm block 59 upward, it drives the second connecting piece 57 to rotate, so that the second tensioning pulley 54 presses the second belt 53 tightly and the second large pulley 52 starts to rotate. At this time, driven by the second large pulley 52, the snow throwing impeller 61 and the worm shaft 621 rotate synchronously, and the power is transmitted to the snow rolling knife assembly 63 through the worm and worm gear box 62, causing the snow rolling knife assembly 62 to start working. At this time, the main blade system is officially started and can sweep and throw snow normally.

[0071] The shutdown process of the main blade system can be briefly described as follows: After releasing the main blade handle pressing piece 55, the second cable 56 is in a relaxed state. At this time, the second tensioning pulley 54 and the second connecting piece 57 will reset to the initial state under the restoring force of the second spring 58. The second tensioning pulley 54 disengages from the second belt 53, the second large pulley 52 stops rotating, the power of the motor 11 cannot be continuously transmitted to the second large pulley 52, the snow throwing impeller 61 stops rotating, and the snow sweeping and throwing actions cannot be performed. The main blade system stops.

[0072] According to the above description, the present invention has the following advantages:

[0073] 1. The main knife system and the self-propelled system share a single motor 11 and use the same motor output shaft 111. This not only reduces the number of components and simplifies assembly, but also improves the dynamic synchronization and matching, resulting in better power and performance. In addition, the power of the main knife and the self-propelled system can borrow each other's power and torque to be superimposed. Compared with the driving scheme where two sets of motors output power separately, the power of the main knife and the self-propelled system will be more powerful respectively, and they can cooperate synchronously and complement each other, making snow sweeping, snow throwing faster and more continuous, and the self-propelled speed faster and more continuous. Thus, with the same power consumption and battery life, the power performance is stronger, snow sweeping work and walking are more continuous, snow throwing is more beautiful, and the snow sweeping area is larger. While not increasing the total power, the output power and output torque of the main knife and the self-propelled system are maximized, the total power consumption will not increase, the battery life will not be shortened, and the cost is the lowest, so the cost performance is the highest, fully meeting the market requirements of the customer's usage time.

[0074] 2. It can output the power of the main knife and the self-propelled system separately or synchronously, and can also cut off the power output separately (including the power of the main knife and the self-propelled system) or cut off the power output simultaneously (including the power of the main knife and the self-propelled system); it can be applied to wheeled tools, equipment and vehicles at the same time (such as snow blowers, lawn mowers, Cart trolleys, ZTR riding lawn mowers, off-road vehicles, etc.). In addition, the same battery pack can also be used in these complete machines, vehicles or equipment. The battery pack includes multiple battery packs, the battery capacity of the battery packs is not limited, and the battery packs within each battery pack can be connected in parallel, in series or in a hybrid combination of series and parallel, and the battery packs can be connected in parallel, in series or in a hybrid combination of series and parallel.

[0075] 3. Due to the arrangement of the first belt 33 and the second belt 53, in case of large load or overload, the instantaneous stall will not cause a direct huge impact on the motor 11 and the PCB, nor will it cause the electronic control system to be easily and frequently protected due to frequent overload impacts.

[0076] 4. It can start with low load: The snow blower 100 of the present invention can first turn on the power switch (or turn on the power with a key), so that the motor 11 rotates first but does not output power. At this time, the second belt 53 is in a non-tensioned state and the first large pulley 32 and the friction disc 42 are disengaged; then, the second belt 53 is remotely driven to be tensioned to transmit the power of the main knife, or the first large pulley 32 is remotely driven by the first cable 36 to press the friction disc 42 to transmit the self-propelled power; thus, only the bare motor starts during startup, so the startup current is very small, and the current impact on the PCB caused by startup is very small, so the PCB can be effectively protected.

[0077] 5. Diversity of shutdown methods and the ability to disengage the power and implement mechanical braking: When the main blade and the self-propelled unit stop separately or simultaneously, it is possible to cut off the power supply and power of the motor 11 simultaneously, or to cut off the power while keeping the motor power on; and when shutting down, the self-propelled power and the main blade power are instantly disengaged. The self-propelled tires 41 achieve self-locking mechanical braking under the action of the first gear 44 and the second gear 46, and the snow-rolling blade assembly 63 is also synchronously stopped by the worm and worm gear box 62 when the second large pulley 52 stops rotating. The shutdown time is shorter and safer. In addition, when the main blade handle pressing piece 55 and the self-propelled handle pressing piece 35 are released separately or simultaneously, the self-propelled system is disengaged from the first transmission device 30, and the main blade system is also disengaged from the second transmission device 50. The snow-throwing impeller 61, the snow-rolling blade assembly 63, and the self-propelled tires 41 driven by the self-propelled unit all stop running immediately. At this time, the motor 11 can stop running with a delay or stop running immediately.

[0078] 6. The whole machine is more energy-efficient when the user switches between working and taking intermittent breaks: When the user turns while changing lanes for snow sweeping or takes a break in the middle, the user can release the handle pressing piece with both hands or one hand to cut off the power output. At this time, only the motor 11 remains rotating, the load is very low, and it is more power-saving. When continuing to work after a short period of time, the user only needs to press the handle pressing piece to work normally. During this switching process, the user does not need to frequently shut down and restart, which is convenient for the user to operate, saves power, and has low noise.

[0079] 7. The main blade and the self-propelled unit can work separately or simultaneously, and can stop working separately or simultaneously: After the motor 11 is powered on, the main blade handle pressing piece 55 or the self-propelled handle pressing piece 35 can be controlled separately to start the operation of the main blade alone or the self-propelled unit alone; or the main blade handle pressing piece 55 and the self-propelled handle pressing piece 35 can be pressed simultaneously or without sequence to start the operation of the main blade and the self-propelled unit at the same time; after running simultaneously for a period of time, the main blade handle pressing piece 55 or the self-propelled handle pressing piece 35 can be released separately to stop the operation of the main blade or the self-propelled unit; and the unreleased self-propelled handle pressing piece 35 or the main blade handle pressing piece 55 can continue to work; or the main blade handle pressing piece 55 and the self-propelled handle pressing piece 35 can be released simultaneously to stop the operation of the main blade and the self-propelled unit at the same time. At this time, the motor 11 can stop running simultaneously or with a delay.

[0080] In summary, for the snow sweeper 100 of the present invention, the self-propelled system and the main blade system are designed to use the same motor 11 as the driving source and share the same motor output shaft 111. At the same time, the self-propelled system and the motor 11 are designed to be connected through the first transmission device 30, and the main blade system and the motor 11 are designed to be connected through the second transmission device 50. Moreover, the first transmission device 30 and the second transmission device 50 are independent of each other, so that the self-propelled system and the main blade system can be controlled to start or stop separately, or the self-propelled system and the main blade system can be controlled to start or stop simultaneously.

[0081] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A snow sweeper, comprising a power system and a handrail provided at the rear side of the power system. The power system includes a motor and a housing covering the outside of the motor, and is characterized in that: The snow sweeper further includes a self-propelled system and a main blade system. The self-propelled system and the main blade system use the same motor as the driving source. The self-propelled system is connected to the motor through a first transmission device, and the main blade system is connected to the motor through a second transmission device. The first transmission device and the second transmission device are independent of each other to separately control the start or stop of the corresponding self-propelled system and main blade system; Among them, the first transmission device includes a first small pulley connected to the output shaft of the motor, a first large pulley connected to the self-propelled system, a first belt connecting the first small pulley and the first large pulley, a first tensioning pulley located beside the first belt, a fixing plate assembly connected to the first large pulley, a self-propelled handle pressing piece provided on the handrail, a first cable connected to the self-propelled handle pressing piece, and a first connecting component for driving the first large pulley to move. The first connecting component includes a connecting plate fixedly connecting the first cable and the first large pulley, and a first spring elastically connecting the first cable and the housing. One end of the first spring is fixedly connected to both the first cable and the connecting plate, and the other end is fixedly connected to the housing through a shaft-like component. A fixing shaft protrudes from the center position of the first large pulley. A through hole for the fixing shaft to pass through and a bearing received in the through hole are provided at the center position of the fixing plate assembly. The fixing shaft of the first large pulley passes through the bearing and is axially locked and fixed by a nut. One end of the fixing plate assembly is sleeved on a circular shaft and can rotate relative to the circular shaft, and the other end is provided with a claw. Both ends of the circular shaft are fixedly connected to the housing. The claw is arranged close to the shaft-like component. The connecting plate is fixed to the claw, so that when the first cable pulls the connecting plate, the fixing plate assembly is driven to rotate around the circular shaft, and the distance of the fixing plate assembly rotating relative to the circular shaft is limited under the cooperation of the claw and the shaft-like component; The self-propelled system includes self-propelled tires and a friction disc cooperating with the self-propelled tires. After pressing the self-propelled handle pressing piece, the first cable pulls the connecting plate, so that the first large pulley moves toward the friction disc until the first large pulley contacts the friction disc, and the self-propelled system starts; After releasing the self-propelled handle pressing piece, the first cable and the connecting plate are reset under the elastic force of the first spring, so that the first large pulley disengages from the friction disc, and the self-propelled system stops.

2. The snow sweeper according to claim 1, characterized in that: When the motor rotates, it outputs driving force to the first small pulley and transmits it to the first large pulley through the first belt and the first tensioning pulley, so that the self-propelled system starts.

3. The snow sweeper according to claim 1, characterized in that: There are two self-propelled tires. The self-propelled system further includes a wheel axle connecting the two self-propelled tires, a first rotating wheel sleeved on the wheel axle, a fixing shaft passing through the friction disc, and a second rotating wheel fixed on the fixing shaft. The first rotating wheel and the second rotating wheel cooperate with each other to transmit the self-propelled power to the friction disc and the self-propelled tires after the first large pulley contacts the friction disc, so that the self-propelled tires rotate.

4. The snow sweeper according to claim 3, wherein: The self-propelled system further includes a switching device for adjusting the self-propelled direction and speed. The switching device includes an operating handle provided on the armrest, a connecting rod connected to the operating handle, a slider connected to the friction disc, and a crank connecting the connecting rod and the slider. When the operating handle is operated, the connecting rod moves up and down, the crank rotates and drives the slider and the friction disc to slide left and right along the fixed shaft.

5. The snow sweeper according to claim 1, characterized in that: The first tensioning wheel always presses the first belt.

6. The snow sweeper according to claim 1, wherein: The second transmission device includes a first driving wheel connected to the output shaft of the motor, a second driving wheel connected to the main knife system, a second transmission member connecting the first driving wheel and the second driving wheel, and a second tensioning wheel located beside the second transmission member. When the motor rotates, it outputs driving force to the first driving wheel and transmits it to the second driving wheel under the tensioning action of the second tensioning wheel on the second transmission member, so as to start the main knife system.

7. The snow sweeper according to claim 6, characterized in that: The second transmission device further includes a main knife handle pressing piece provided on the armrest, a second cable connected to the main knife handle pressing piece, and a second connecting member connecting the second cable and the second tensioning wheel. After pressing the main knife handle pressing piece, the second cable drives the second connecting member to move, so that the second tensioning wheel presses the second transmission member, the second driving wheel rotates, and the main knife system starts.

8. The snow sweeper according to claim 7, characterized in that: The second transmission device further includes a second spring with one end connected to the housing and the other end connected to the second connecting member. After releasing the main knife handle pressing piece, the second tensioning wheel and the second connecting member reset under the restoring force of the second spring, the second tensioning wheel disengages from the second transmission member, and the main knife system stops.

9. The snow sweeper according to claim 6, characterized in that: The main knife system includes a snow throwing impeller and a worm and worm gear box coaxially arranged with the second driving wheel, a snow rolling knife assembly connected to the worm and worm gear box, and a snow sweeping cover covering the outside of the worm and worm gear box and the snow rolling knife assembly. The worm and worm gear box is provided with a worm shaft. The second driving wheel and the snow throwing impeller are both fixedly connected to the worm shaft, and the snow throwing impeller is arranged close to the second driving wheel.

10. The snow sweeper according to claim 9, characterized in that: The main knife system further includes a snow throwing cylinder covering the outside of the snow throwing impeller and a snow discharging cylinder assembly connected to the snow throwing cylinder. The snow throwing impeller is used to throw the snow swept into the snow throwing cylinder by the snow rolling knife assembly out from the snow discharging cylinder assembly.

11. The snow sweeper according to claim 1 or 6, characterized in that: The output shaft of the motor is placed horizontally.

12. The snow sweeper according to claim 6, wherein: The second transmission member is a belt.

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