Pure electric road sweeper with double-fan structure

Abstract

The invention relates to the technical field of special vehicles, and discloses a double-fan structure pure electric road sweeper which comprises a frame, a garbage can and sweeping equipment, and further comprises a first fan and a second fan which are used for generating negative pressure in a box body of the garbage can, and a driving motor used for directly driving the first fan and the second fan, the first draught fan and the second draught fan are connected to the two ends of a rotating shaft of the driving motor in a direct drive mode correspondingly and communicate with an inner cavity of the dustbin through a first pipeline and a second pipeline correspondingly. The bottom of the garbage can is connected with a suction structure used for sucking garbage into a box of the garbage can, and the suction structure is arranged close to the sweeping equipment. The motor rotation stability and the vehicle energy efficiency are effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of special vehicles, and in particular to a pure electric road sweeper with a dual-blower structure. Background Art

[0002] Pure electric washing and sweeping vehicles are road cleaning vehicles that are modified and produced on the basis of pure electric Class II chassis. At present, there are two layout forms of the cleaning device of pure electric washing and sweeping vehicles. One is to install two disc brushes and a suction cup in the middle of the chassis, and the other is to install four disc brushes in the middle of the chassis and a suction cup at the rear of the chassis. Both of these layout forms belong to the single fan suction method, that is, a permanent magnet synchronous motor directly drives the fan or drives the fan through a pulley. Relying on the negative pressure and kinetic energy formed by the operation of the fan, the garbage and sewage on the road are sucked into the garbage bin through a single suction cup. When this single-fan washing and sweeping vehicle is used for washing and sweeping operations in places with general road pollution, the road washing and sweeping effect is relatively good, but due to the limited power of a single fan and the fast speed of the suction cup moving with the vehicle, the washing and sweeping effect is poor in places with serious road pollution, which is easy to cause the garbage on the road to be missed. In order to remove the residual garbage, the vehicle needs to return to wash and sweep the road again, thereby extending the working time and reducing the work efficiency.

[0003] In order to solve the above technical problems, Chinese invention patent CN115821832A discloses a washing and sweeping vehicle with a dual-fan system, comprising: a vehicle chassis, a box body, a first fan, a second fan, a first motor, a second motor, a disc brush, a first suction cup and a second suction cup; the box body comprises a front cover, a clean water tank, a large garbage bin, a small garbage bin and a rear door; the clean water tank comprises a front water tank, a bottom water tank, a left water tank and a right water tank; the first fan, the second fan, the first motor and the second motor are located in the front cover, the first motor drives the first fan; the second motor drives the second fan. The washing and sweeping vehicle with a dual-fan system provided by the present invention can improve the washing and sweeping effect on severely polluted roads, reduce power loss and water consumption on generally polluted roads, and extend working time.

[0004] However, the above structure uses one motor to drive one fan to work. When the fan is running, the huge rotational inertia of the fan affects the rotation stability of the driving motor's rotating shaft, resulting in the driving motor's rotating shaft having higher requirements on the bearing capacity of the supports and seals. In addition, belt transmission is used between the fan and the driving motor, which reduces the transmission efficiency, thereby reducing the vehicle's energy efficiency.

[0005] Application Contents

[0006] The purpose of the present application is to provide a pure electric road sweeper with a dual-blower structure that effectively improves motor rotation stability and vehicle energy efficiency.

[0007] This application is implemented as follows:

[0008] A pure electric road sweeper with a dual-fan structure, comprising a frame, a garbage bin, and a cleaning device, and also comprising a first fan and a second fan for generating negative pressure in the body of the garbage bin, and a drive motor for directly driving the first fan and the second fan, wherein the first fan and the second fan are directly connected to the two ends of the rotating shaft of the drive motor respectively, and the first fan and the second fan are connected to the inner cavity of the garbage bin through a first pipe and a second pipe respectively, and a suction structure for sucking garbage into the bin of the garbage bin is connected to the bottom of the garbage bin, and the suction structure is arranged close to the cleaning device.

[0009] Furthermore, the suction structure includes a suction channel for sucking in garbage, and an atomizing nozzle for dust reduction is arranged on the suction channel.

[0010] Furthermore, a baffle is provided at the outlet end of the suction passage, and the baffle is provided close to one side of the first pipe and the second pipe.

[0011] Furthermore, the baffle is in a "C" shape, and the concave side of the baffle is arranged toward the outlet end of the suction channel.

[0012] Furthermore, a filter is provided between the first pipe, the second pipe and the suction structure, and the filter is connected to the garbage bin.

[0013] Furthermore, the driving motor, the first fan and the second fan are all placed in a sound-absorbing partition built into one end of the trash bin.

[0014] Furthermore, the first fan and the second fan are respectively connected to a first exhaust duct and a second exhaust duct for exhausting air.

[0015] Furthermore, the first air exhaust duct and the second air exhaust duct are respectively provided with a silencer device for noise reduction.

[0016] Furthermore, the cleaning device is a brush.

[0017] Furthermore, the trash bin is arranged at the upper part of the rear side of the frame, and the cleaning equipment is arranged at the bottom of the front side of the frame.

[0018] Compared with the prior art, the beneficial effects of this application are:

[0019] 1. The two ends of the rotating shaft of the driving motor are directly connected to a fan. The fans are respectively placed at the front and rear ends of the rotating shaft as loads, so that the load-bearing ends of the rotating shaft are basically balanced, which greatly improves the rotation stability and reduces the load-bearing requirements of the rotating shaft on the support and seals;

[0020] 2. The negative pressure structure of the dual fans can significantly reduce the volume of the negative pressure structure, optimize the spatial layout, reduce the air duct resistance, and improve the vehicle operation efficiency;

[0021] 3. The negative pressure structure built into the garbage bin greatly reduces the noise of the fan and also provides a guarantee for further noise reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 is a top view of the internal structure schematic diagram of the present application;

[0024] Figure 2 It is a side view of the internal structure schematic diagram of the present application.

[0025] Figure numerals: frame 1; trash bin 2; cleaning device 3; first fan 4; second fan 5; drive motor 6; first pipeline 7; second pipeline 8; suction duct 9; atomizing nozzle 10; baffle 11; filter 12; silencer partition 13; first exhaust duct 14; second exhaust duct 15; silencer 16. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for which protection is sought, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0027] See also Figure 1 and Figure 2A pure electric road sweeper with a dual-fan structure includes a frame 1, a garbage bin 2, and a cleaning device 3, and also includes a first fan 4 and a second fan 5 for generating negative pressure in the box body of the garbage bin 2, and a drive motor 6 for directly driving the first fan 4 and the second fan 5, the first fan 4 and the second fan 5 are directly connected to the two ends of the rotating shaft of the drive motor 6, the first fan 4 and the second fan 5 are connected to the inner cavity of the garbage bin 2 through a first pipe 7 and a second pipe 8 respectively, the bottom of the garbage bin 2 is connected to a suction structure for sucking garbage into the box of the garbage bin 2, and the suction structure is arranged close to the cleaning device 3.

[0028] The suction structure comprises a suction channel 9 for sucking in garbage, and an atomizing nozzle 10 for dust reduction is arranged on the suction channel 9.

[0029] A baffle 11 is disposed at the outlet end of the suction passage 9 , and the baffle 11 is disposed close to one side of the first pipe 7 and the second pipe 8 .

[0030] The baffle plate 11 is in a “C” shape, and the concave side of the baffle plate 11 is disposed toward the outlet end of the suction passage 9 .

[0031] A filter screen 12 is provided between the first pipe 7 , the second pipe 8 and the suction structure, and the filter screen 12 is connected to the dustbin 2 .

[0032] The driving motor 6 , the first fan 4 , and the second fan 5 are all placed in a sound-absorbing partition 13 built into one end of the trash bin 2 .

[0033] The first fan 4 and the second fan 5 are respectively connected to a first exhaust duct 14 and a second exhaust duct 15 for exhausting air.

[0034] The first air outlet duct 14 and the second air outlet duct 15 are respectively provided with a silencer 16 for noise reduction.

[0035] The cleaning device 3 is a brush.

[0036] The trash bin 2 is arranged at the upper portion of the rear side of the frame 1 , and the cleaning device 3 is arranged at the bottom portion of the front side of the frame 1 .

[0037] The working principle of the present application is as follows: the front and rear ends of the rotating shaft of the driving motor 6 are directly connected to the first fan 4 and the second fan 5, and the air in the inner cavity of the garbage bin 2 is extracted through the first pipe 7 and the second pipe 8 respectively, so that negative pressure is generated in the garbage bin 2. The road garbage cleaned by the cleaning device 3 enters the garbage bin 2 through the suction duct 9 under the action of negative pressure. In the process of the garbage entering the garbage bin 2, the water mist sprayed by the atomizing nozzle 10 connected to the water source through the pipeline condenses the tiny particles in the garbage and attaches them to the large particles of garbage, thereby realizing the initial dust reduction. When the large particles of garbage pass through the outlet end of the suction duct 9, under the guidance of the "C"-shaped baffle 11, the large particles of garbage are thrown to the side away from the first pipe 7 and the second pipe 8. Due to inertia and gravity, The trash can 2 is placed away from the end where negative pressure is generated, which effectively reduces the flying of light paraphernalia. The air and a small amount of light paraphernalia rush to the air inlet end of the two fans, and the light paraphernalia are blocked by the coarse filter 12. The air enters the relatively independent first exhaust duct 14 and the second exhaust duct 15 and is discharged into the atmosphere. The negative pressure structure including the drive motor 6, the first fan 4, and the second fan 5 are all placed in the built-in soundproof partition 13 at one end of the trash can 2, which greatly reduces the noise generated by the negative pressure structure. The silencer 16 at the ends of the first exhaust duct 14 and the second exhaust duct 15 further reduces the wind noise of the present application. The cleaning equipment 3 is a brush, the trash can 2 is arranged on the upper part of the rear side of the frame 1, and the cleaning equipment 3 is arranged on the bottom of the front side of the frame 1.

[0038] The above description is only the preferred implementation mode of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pure electric road sweeper with a dual-fan structure, comprising: A vehicle frame (1), a garbage bin (2), and a cleaning device (3), characterized in that: it also includes a first fan (4) and a second fan (5) for generating negative pressure in the box body of the garbage bin (2), and a drive motor (6) for directly driving the first fan (4) and the second fan (5), the first fan (4) and the second fan (5) are directly connected to the two ends of the rotating shaft of the drive motor (6), the first fan (4) and the second fan (5) are respectively connected to the inner cavity of the garbage bin (2) through a first pipe (7) and a second pipe (8), respectively, the bottom of the garbage bin (2) is connected to a suction structure for sucking garbage into the box of the garbage bin (2), and the suction structure is arranged close to the cleaning device (3).

2. A pure electric road sweeper with a dual-fan structure according to claim 1, characterized in that: The suction structure comprises a suction channel (9) for sucking in garbage, and an atomizing nozzle (10) for dust reduction is arranged on the suction channel (9).

3. A pure electric road sweeper with a dual-fan structure according to claim 2, characterized in that: A baffle (11) is provided at the outlet end of the suction passage (9), and the baffle (11) is arranged close to one side of the first pipe (7) and the second pipe (8).

4. A pure electric road sweeper with a dual-fan structure according to claim 3, characterized in that: The baffle (11) is in a "C" shape, and the concave side of the baffle (11) is arranged toward the outlet end of the suction passage (9).

5. A pure electric road sweeper with a dual-fan structure according to claim 1, characterized in that: A filter screen (12) is provided between the first pipe (7) and the second pipe (8) and the suction structure, and the filter screen (12) is connected to the garbage bin (2).

6. A pure electric road sweeper with a dual-fan structure according to claim 1, characterized in that: The driving motor (6), the first fan (4), and the second fan (5) are all placed in a sound-absorbing partition (13) built into one end of the garbage bin (2).

7. A pure electric road sweeper with a dual-fan structure according to claim 1, characterized in that: The first fan (4) and the second fan (5) are respectively connected to a first exhaust duct (14) and a second exhaust duct (15) for exhausting air.

8. A pure electric road sweeper with a dual-fan structure according to claim 7, characterized in that: The first air exhaust duct (14) and the second air exhaust duct (15) are respectively provided with a silencer (16) for reducing noise.

9. A pure electric road sweeper with a dual-fan structure according to claim 1, characterized in that: The garbage bin (2) is arranged at the upper part of the rear side of the vehicle frame (1), and the cleaning device (3) is arranged at the bottom of the front side of the vehicle frame (1).

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