CN105598093B - Wind-power integrated dust collector suction nozzle and dust collecting equipment thereof - Google Patents

Abstract

The invention discloses a novel wind-power integrated dust collector suction nozzle and dust collecting equipment thereof. The novel wind-power integrated dust collector suction nozzle is compact in structure, is reasonable in layout, can clear dust on large-sized data center communication equipment, can eliminate static electricity generated by the communication equipment, can perform dust removal work in an equipment-charged state, has wide applicability, and can avoid secondary pollution on the communication equipment caused by rising dust. In the dust collecting equipment, a separator and an intelligent spraying mechanism are combined, and collected dust is siltized, so that an efficient dust removal effect is achieved; a power supply device of the dust collecting equipment can be taken as a power supply of the dust collector suction nozzle, so that power resources of the dust collecting equipment can be utilized reasonably, and greater convenience is brought to use.

Description

A wind power fusion dust collector suction nozzle and its dust collection equipment

technical field

The invention relates to the technical field of dust removal for communication equipment, in particular to a suction nozzle of a wind power fusion dust collector and dust collection equipment thereof.

Background technique

The network equipment in the information and communication data room needs to work continuously for 24 hours. Over time, a lot of dust will fall into the outside and inside of the equipment. Most of this dust enters the equipment through windows or door cracks. Small and difficult to remove. According to the existing dust removal method, the equipment must be powered off first, and then the internal boards should be pulled out, so that cleaning can be carried out. However, since the communication equipment cannot be powered off at will, the communication equipment cannot be dedusted at any time, and if it is not handled properly, the dust will cause secondary pollution to the equipment.

By analyzing the failure data of relevant network communication equipment stored in the information and communication data center, we found that most of the failures are related to the accumulation of dust. The ability is greatly reduced, causing the temperature of the chip of the component to be too high, which affects the working efficiency of the chip; when dust falls into the pins of the electronic component, it will directly cause a short circuit on the circuit board under certain conditions; when the dust accumulates a lot, the circuit board The insulation performance between the chip pins and the integrated electronic circuit will decrease accordingly. At this time, if the ambient humidity of the device is less than 15%-20%, the electrostatic induction voltage on the device will increase; if it exceeds the insulation strength between the data panel circuits, Communication equipment will cause instantaneous short circuit, downtime and equipment restart and other faults; when a large amount of dust is adsorbed on the fiber optic module port, it will seriously increase the attenuation of the optical fiber, and data errors and downtime failures will occur.

At present, there is still a blank in the market for dust collector nozzles for network equipment in information and communication data computer rooms. There are five main types on the market: floor brush type, round brush type, flat suction type, mite removal brush type and rolling brush type. However, These suction nozzles have their own functions and are distributed in different aspects. They are basically used for dust removal in households and unit rooms. When removing dust from computer equipment, network storage equipment, network communication equipment, cabinets and other facilities, it seems stretched. It is very suitable for the dust removal work of communication equipment. The suction nozzles of these dust collectors cannot penetrate into the cabinet well; some suction nozzles are small, and the efficiency is low when cleaning a large area of dust; communication equipment generally works for a long time, and the static electricity generated will also affect the dust. inhale. In addition, the diameter of the dust particles falling on the information equipment is smaller than that of ordinary ground dust particles. The suction nozzle cannot suck the dust cleanly at the same time, and the dust will cause secondary pollution to the equipment instead.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, and design a wind-power fusion dust collector nozzle and its dust collection equipment, which solves the problem that the dust of the communication equipment cannot be sucked cleanly, and the dust raised during the dust collection process will cause secondary pollution. The problem of contaminating communication equipment.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A suction nozzle for a wind power fusion dust collector, including a top cover, a bottom case and a roller brush assembly. The top cover and the bottom case are fastened together to form a suction nozzle shell. The front end of the bottom shell is provided with a nozzle mouth that communicates with the inner cavity of the nozzle housing. The left and right ends of the roller brush assembly are fixed in the slot. The roller brush assembly includes an electrostatic dust removal mechanism and a roller brush motor. The electrostatic precipitator is connected to the roller brush motor through transmission, and the cavity between the lower end of the roller brush motor and the bottom shell is a dust collection channel.

Further, the electrostatic dust removal mechanism includes an electrostatic roller shaft, a roller shaft bearing, a roller shaft fixing device, a brush, a brush dust scraper, and an electrostatic conductive device. There are roller shaft gears, which mesh with the gears of the roller brush motor; the left and right ends of the electrostatic roller shaft are fixedly connected to the roller shaft fixing device through the roller shaft bearing, and the roller shaft fixing device is fixed in the card slot. A spiral brush is embedded in the whole body of the brush, and one end of the dust scraper of the brush is fixed on the nozzle shell at the upper left of the electrostatic roller shaft, and the other end is placed in the brush directly above the electrostatic roller shaft; the electrostatic conductive The device is fixed on the wall of the slot, the nozzle opening includes a first nozzle opening and a second nozzle opening, and the electrostatic roller is arranged above the second nozzle opening.

Further, the electrostatic conductive device includes a coil fixing device, a conductive coil, and a conductive sheet, the coil fixing device is fixed on the wall of the slot, the conductive coil is fixed on the coil fixing device, and the conductive coil is provided with a conductive coil protrusion, The two ends of the conductive sheet are respectively connected with the electrostatic roller shaft and the electrostatic roller shaft gear.

Further, it also includes a rotating brush motor speed controller and a static elimination device, the rolling brush motor speed controller is fixed at one end of the rolling brush motor, and the static elimination device is fixed on the inner shell wall at the front end of the suction nozzle shell.

Further, it also includes a dust baffle and a roller, the dust baffle is arranged on the bottom case on the left side of the nozzle opening, and the roller is embedded in the middle of the bottom case.

A dust collection device including a suction nozzle of a wind power fusion dust collector, including a housing, a dust collection device, a dust inlet, a dust collection nozzle, a dust collection mechanism, a dust concentration sensor, an intelligent control circuit panel, a spray mechanism, and a water tank. The inner cavity of the lower end of the housing is provided with a dust collection device, and the top is provided with a liquid crystal display, an intelligent control button, and a power control switch. The dust collection mechanism includes a dust collection motor and a separator, and the dust collection motor is electrically connected to the separator. , one end of the separator is connected with the dust outlet channel, the other end is connected with the dust inlet, the dust inlet is connected with the suction nozzle of the dust collector through a hose, the upper end of the dust inlet is provided with a dust concentration sensor, and the dust concentration sensor is electrically connected with the intelligent control circuit panel , the intelligent control circuit panel is electrically connected to the spraying mechanism, the spraying mechanism is connected to the water tank through a water pipe, the water tank is fixed on the right middle part of the housing, and the upper end of the water tank is fixed with a power supply device.

Further, the spraying mechanism includes a spraying intelligent controller and a water nozzle, the spraying intelligent controller is electrically connected to the intelligent control circuit panel, the spraying intelligent controller is electrically connected to the water nozzle, and the water nozzle is connected to the water pipe, The water nozzle is arranged at the middle and lower part of the dust outlet channel.

Further, the right side of the water tank is provided with a water injection port, a water injection device button and a water tank scale.

Further, it also includes a handle and a universal wheel, the handle is arranged on the top of the casing, and the universal wheel is arranged on the bottom of the casing.

Positive beneficial effect of the present invention:

1. The present invention has a compact structure and a reasonable layout, can clean the dust on the communication equipment of a large-scale data center, has wide applicability, and can avoid secondary pollution of the communication equipment by the raised dust.

2. The static elimination device can eliminate the static electricity generated by the communication equipment, so that the suction nozzle of the dust collector will not be affected by the electrification of the communication equipment and the cabinet, and the dust removal work can be carried out when the equipment is electrified.

3. The dust collection equipment adopts the combination of separator and intelligent spraying mechanism to muddy the collected dust to achieve the effect of efficient dust removal and efficient use of water resources.

4. The power supply device of the dust collection equipment can be used as the power source of the vacuum cleaner nozzle, and as the power source of the vacuum cleaner nozzle, it can make reasonable use of the power resource of the dust collection equipment and is more convenient to use.

Description of drawings

Fig. 1 is the structural representation of the suction nozzle of the wind power fusion dust collector of the present invention

Figure 2 is a schematic diagram of the top view of Figure 1

Figure 3 is a side view of the electrostatic conductive device

Fig. 4 is the structural representation of dust collecting equipment of the present invention

Fig. 5 is a top view structural schematic diagram of Fig. 4

The specific meanings of the labels in the figure are: 1 is the nozzle shell, 1-1 is the top cover, 1-2 is the bottom shell, 2 is the roller brush assembly, 3 is the nozzle mouth, 3-1 is the first nozzle mouth, 3-2 is the second suction nozzle, 4 is the card slot, 5 is the dust collection channel, 6 is the electrostatic dust removal mechanism, 6-1 is the electrostatic roller shaft, 6-2 is the roller shaft bearing, 6-3 is the roller shaft fixing Device, 6-4 is a hair brush, 6-5 is a brush dust scraper, 6-6 is an electrostatic conductive device, 6-7 is a roller shaft gear, 7 is a roller brush motor, 7-1 is a roller brush gear, 7 -2 Rolling brush motor speed controller, 8 is static elimination device, 9 is coil fixing device, 10 is conductive coil, 11 is conductive sheet, 12 is conductive coil protrusion, 13 is dust baffle, 14 is roller, 15 is Housing, 16 is a dust inlet, 17 is a dust collection device, 18 is a dust collection mechanism, 18-1 is a dust collection motor, 18-2 is a separator, 19 is a dust concentration sensor, 20 is an intelligent control circuit panel, 21 is a Spray mechanism, 21-1 is a spray intelligent controller, 21-2 is a water nozzle, 22 is a water tank, 22-1 is a water injection port, 22-2 is a water injection device button, 22-3 is a water tank scale, 23 is a liquid crystal Display, 24 is an intelligent control button, 25 is a power control switch, 26 is a dust removal channel, 27 is a flexible pipe, 28 is a water pipe, 29 is a power supply unit, 30 is a handle, and 31 is a universal wheel.

detailed description

Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Embodiment 1, referring to Figures 1-5, the wind power fusion dust collector suction nozzle of the present invention includes a top cover 1-1, a bottom case 1-2 and a roller brush assembly 2, the top cover 1-1 and bottom case 1- 2 are snapped together to form a nozzle housing 1, the front end of the bottom housing 1-2 is provided with a nozzle mouth 3 communicating with the inner cavity of the nozzle housing 1, and the inside of the shell wall at both ends of the nozzle housing 1 is provided with a card. Groove 4, the left and right ends of the rolling brush assembly 2 are fixed in the card slot 4, the rolling brush assembly 2 includes an electrostatic dust removal mechanism 6, a rolling brush motor 7, and the transmission between the electrostatic dust removal mechanism 6 and the rolling brush motor 7 Connect, the cavity between the lower end of the roller brush motor 7 and the bottom case 1-2 is the dust collection passage 5. The electrostatic precipitator 6 is fixed on the upper end of the suction nozzle mouth 3, and the roller brush motor 7 is fixed on the upper left of the electrostatic precipitator 6. A static elimination device 8 is fixed on the inner shell wall at the front end of the nozzle housing 1. The static elimination device 8 can eliminate the static electricity generated by the communication equipment, so that the suction nozzle of the dust collector is not affected by the electrification of the communication equipment and the cabinet, and can be used when the equipment is electrified. Do dust removal work.

The electrostatic precipitator 6 includes an electrostatic roller shaft 6-1, a roller shaft bearing 6-2, a roller shaft fixing device 6-3, a hair brush 6-4, a hair brush dust scraper 6-5, and an electrostatic conductive device 6-6. The nozzle mouth 3 includes a first nozzle mouth 3-1 and a second nozzle mouth 3-2, the electrostatic roller shaft 6-1 is arranged above the second nozzle mouth 3-2, and the electrostatic roller shaft 6- A roller gear 6-7 is arranged between one side of 1 and the roller bearing 6-2, and the roller gear 6-7 meshes with the gear 7-1 of the rolling brush motor 7; the left and right sides of the electrostatic roller 6-1 The ends are respectively fixedly connected with the roller shaft fixing device 6-3 through the roller shaft bearing 6-2, and the roller shaft fixing device 6-3 is fixed in the card groove 4. The whole body of the electrostatic roller shaft 6-1 is implanted with a spiral-shaped plastic coarse brush and a fine brush 6-4, and the brush 6-4 protrudes 1-2mm at the second suction nozzle mouth 3-2, according to the suction force of the air outlet of the dust collection channel. The effect of the electrostatic roller shaft 6-1 is strong in the middle of the suction force and weak at both ends. The brush 6-4 is implanted in the electrostatic roller shaft 6-1 in the direction that the two ends move closer to the middle. The dust swept by the brush 6-4 moves closer to the middle under the suction of the dust collection channel, and finally enters the dust collection channel and is sent to the dust collection equipment; one end of the brush dust scraper 6-5 is fixed on the electrostatic roller shaft 6- 1 On the nozzle shell at the upper left, the other end is placed in the brush 6-4 directly above the electrostatic roller shaft 6-1, with a certain distance from the electrostatic roller shaft 6-1, and the brush dust scraper 6-5 is an arc shape, the dust brought up when the electrostatic roller shaft 6-1 rolls can scrape the dust from the brush 6-4 through the brush dust scraper 6-5, preventing the brush 6-4 from rolling and taking the dust out of the dust collector for suction mouth, causing secondary pollution.

The electrostatic conductive device 6-6 includes a coil fixing device 9, a conductive coil 10, and a conductive sheet 11. The coil fixing device 9 is fixed on the wall of the slot 4, and the conductive coil 10 is fixed on the coil fixing device 9. The conductive coil 10 A conductive coil protrusion 12 is arranged on it, and the two ends of the conductive sheet 11 are respectively connected with the electrostatic roller shaft 6-1 and the electrostatic roller shaft gear. When the conductive sheet 11 touches the conductive coil protrusion 12, the static roller 6-1 generates static electricity and picks up the dust particles, and the conductive sheet 11 rotates with the rotation of the roller shaft gear. When the conductive sheet 11 and the conductive coil When the protrusion 12 separates, the electrostatic roller 6-1 loses the electrostatic effect, and the dust particles are sucked into the dust inlet of the dust collection device under the triple action of the electrostatic roller 6-1 rotational inertia, gravity and the suction of the dust collection channel 5 16 in.

Rolling brush motor 7 is fixed on the upper left of electrostatic dust removal mechanism, and one end of rolling brush motor 7 is fixed with rolling brush gear 7-1, and the other end installs rolling brush motor speed controller 7-2 additionally. In the case of electrification, the rolling brush gear 7-1 drives the electrostatic roller shaft 6-1 to roll for dust removal, and the rolling brush motor speed controller 7-2 can automatically adjust the speed of the motor according to the dust concentration to achieve efficient dust removal.

The wind power fusion dust collection device of the present invention includes a housing 15, a dust collection device 17, a dust inlet 16, a dust collector nozzle, a dust collection mechanism 18, a dust concentration sensor 19, an intelligent control circuit panel 20, a spray mechanism 21, and a water tank 22. The lower end of the housing 15 is provided with a dust collection device 17, and the top is provided with a liquid crystal display 23, an intelligent control button 24, and a power control switch 25. The dust collection mechanism 18 includes a dust collection motor 18-1, a separator 18-2, the dust collection motor 18-1 is electrically connected with the separator 18-2, one end of the separator 18-2 is connected with the dust outlet channel, and the other end is connected with the dust inlet 16, and the dust inlet 16 is sucked by the dust collector through the hose 27. Mouth connected. The hose 27 is made of pressure-resistant, folding-resistant high-strength material, has high strength, flexibility, and is tough and durable. The two ends interface of flexible pipe 27 adopts buckle-type connection, and its one end is connected with the interface of dust remover suction nozzle, and the other end is connected with dust inlet 16, so that it does not leak or fall off during use.

The dust collection motor 18-1 drives the separator 18-2 to rotate, so that the dust collection mechanism 18 generates negative pressure, and the dust inhaled by the suction nozzle of the dust collector enters the dust inlet 16 through the hose 27, and then enters the dust inlet 16 of the dust collection mechanism 18 through the dust inlet 16. In the separator 18-2, the separator 18-2 separates the dust to the dust outlet channel, and the dust condenses the dust into plaster through the spray mechanism 21, and finally falls into the dust collection device 17, and finally cleans the dust collection device 17 to achieve Efficient dust removal effect.

Because the dust is separated under the high-speed rotation of the separator 18-2, the dust will be stirred up after entering the dust outlet passage. Therefore, a sprinkler mechanism 21 is installed at a position obliquely lower than the middle of the dust outlet passage. The spray mechanism 21 includes a spray intelligent controller 21-1 and a water nozzle 21-2, the spray intelligent controller 21-1 is electrically connected to the intelligent control circuit panel 20, and the spray intelligent controller 21-1 is connected to the water nozzle 21-2 is electrically connected, the water nozzle 21-2 is connected with the water pipe 28, and the water nozzle 21-2 is arranged in the middle and lower part of the dust outlet channel. The water nozzle 21-2 muddyes the dust that has been stirred up, and falls into the dust collection device 17 under the action of gravity to achieve the dust collection effect.

The upper end of dust inlet 16 is provided with dust concentration sensor 19, and dust concentration sensor 19 is electrically connected with intelligent control circuit panel 20, and intelligent control circuit panel 20 is electrically connected with spray mechanism 21, and spray mechanism 21 is connected with water tank 22 by water pipe 28, The water tank 22 is fixed on the right middle part of the housing 15, and the right side of the water tank 22 is provided with a water injection port 22-1, a water injection device button 22-2 and a water tank scale 22-3, and the water injection port 22-1 passes through the water injection device button 22-2. to open. After the water injection device button 22-2 is pressed, the water injection port 22-1 is opened, and water can be injected from the water injection port 22-1 through the relevant water storage device, and the user can check it through the water tank scale 22-3 on the right side of the water tank 22 The amount of water injected. After the dust enters the dust inlet 16, after the dust concentration sensor 19 detects the dust concentration, the relevant data is transmitted to the intelligent control circuit panel 20 in real time, and the data is displayed on the liquid crystal screen. Relevant information is transmitted to the intelligent sprinkler controller 21-1, and the intelligent sprinkler controller 21-1 controls the size of the water spraying volume of the water nozzle 21-2, and reasonably muddies the dust so that the dust is not too thin and not too dense. Thick, reach and fall in the dust collecting device 17 naturally.

The upper end of the water tank 22 is fixed with a power supply unit 29 . The power supply device 29 includes a power cord and a power plug. The power cord is wound in the power coil device. When the power plug is powered on, the power cord can be pulled out according to the distance of the power supply. The length of the power cord can be up to 3.5 meters. The power supply device 29 of the dust collecting equipment can be used as the power supply of the vacuum cleaner nozzle, and provides power for the roller brush motor 7 of the vacuum cleaner nozzle through the power cord, which can reasonably utilize the power resource of the dust collecting equipment and is more convenient to use.

Embodiment 2, referring to Figs. 1-5, this embodiment is basically the same as Embodiment 1, the difference is that the suction nozzle of the wind power fusion dust collector also includes a dust baffle 13 and a roller 14 . The dust baffle plate 13 is arranged on the bottom shell on the left side of the second suction nozzle mouth, and plays the effect of preventing dust from sliding out of the suction nozzle mouth 3 during the process of the brush 6-4 rolling and vacuuming. The roller 14 is embedded in the middle part of the bottom case 1-2, and can roll the suction nozzle of the dust collector during the dust suction process to reduce the resistance of pushing and pulling the suction nozzle of the dust collector.

The wind power fusion dust collection device of the present invention further includes a handle 30 and a universal wheel 31 , the handle 30 is arranged on the top of the casing 15 , and the universal wheel 31 is arranged on the bottom of the casing 15 . The user can carry the dust collection device by hand, and also can lift the dust collection device, so that the whole dust collection device can move flexibly and reduce resistance.

Finally, it should be noted that: 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; Modifications to the specific implementation of the invention or equivalent replacement of some technical features; without departing from the spirit of the technical solution of the present invention, should be included in the scope of the technical solution claimed in the present invention.

Claims (8)

1. A suction nozzle of a wind power fusion dust collector, including a top cover, a bottom shell and a roller brush assembly, the top cover and the bottom shell are fastened together to form a suction nozzle shell, and the inner sides of the shell walls at both ends of the suction nozzle shell are provided with card slots , the front end of the bottom shell is provided with a nozzle mouth communicating with the inner cavity of the nozzle housing, and the feature is that: the left and right ends of the roller brush assembly are fixed in the slot, and the roller brush assembly includes an electrostatic dust removal mechanism, Roller brush motor, the electrostatic dust removal mechanism is connected with the roller brush motor, the cavity between the lower end of the roller brush motor and the bottom shell is a dust collection channel, the electrostatic dust removal mechanism is fixed on the upper end of the suction nozzle, and the roller brush The motor is fixed on the upper left of the electrostatic dust removal mechanism; the electrostatic dust removal mechanism includes an electrostatic roller shaft, a roller bearing, a roller shaft fixing device, a brush, a brush dust scraper, and an electrostatic conductive device. There is a roller gear between the roller bearing and the roller gear, which meshes with the gear of the rolling brush motor; the left and right ends of the electrostatic roller are fixedly connected to the roller fixing device through the roller bearing respectively, and the roller fixing device is fixed on In the card slot, a spiral brush is implanted around the electrostatic roller shaft. One end of the dust scraper of the brush is fixed on the suction nozzle shell on the upper left of the electrostatic roller shaft, and the other end is placed on the brush directly above the electrostatic roller shaft. In the brush: the electrostatic conductive device is fixed on the wall of the card slot, the nozzle opening includes a first nozzle opening and a second nozzle opening, and the electrostatic roller is arranged above the second nozzle opening. 2. The suction nozzle of wind power fusion dust collector according to claim 1, characterized in that: the electrostatic conductive device includes a coil fixing device, a conductive coil, and a conductive sheet, the coil fixing device is fixed on the wall of the slot, and the conductive coil The conductive coil is fixed on the coil fixing device, and the conductive coil is provided with a conductive coil protrusion, and the two ends of the conductive sheet are respectively connected with the electrostatic roller shaft and the electrostatic roller shaft gear. 3. The suction nozzle of wind power fusion dust remover according to claim 1, characterized in that: it also includes a roller brush motor speed controller and a static elimination device, the roller brush motor speed controller is fixed at one end of the roller brush motor, and the static electricity The eliminating device is fixed on the inner shell wall at the front end of the suction nozzle shell. 4. The suction nozzle of the wind power fusion dust collector according to claim 1, characterized in that: it also includes a dust baffle and a roller, the dust baffle is arranged on the bottom shell on the left side of the suction nozzle mouth, and the roller is embedded in the bottom shell middle part. 5. A dust collection device comprising the suction nozzle of the wind power fusion dust collector according to claim 1, comprising a housing, a dust collection device and a dust inlet, the inner cavity of the lower end of the housing is provided with a dust collection device, and the top is provided with a dust collection device. It has a liquid crystal display screen, an intelligent control button, and a power control switch. It is characterized in that it also includes a dust collection mechanism, a dust concentration sensor, an intelligent control circuit panel, a spray mechanism, and a water tank. The dust collection mechanism includes a dust collection motor and a separator. , the dust collection motor is electrically connected to the separator, one end of the separator is connected to the dust outlet channel, the other end is connected to the dust inlet, the dust inlet is connected to the suction nozzle of the dust collector through a hose, and the upper end of the dust inlet is provided with a dust concentration sensor The dust concentration sensor is electrically connected to the intelligent control circuit panel, the intelligent control circuit panel is electrically connected to the spraying mechanism, the spraying mechanism is connected to the water tank through a water pipe, the water tank is fixed on the right middle part of the housing, and the upper end of the water tank is fixed with a power supply. 6. The dust collection equipment of the wind power fusion dust collector nozzle according to claim 5, characterized in that: the spray mechanism includes a spray intelligent controller, a water nozzle, and the spray intelligent controller and an intelligent control circuit The panel is electrically connected, the sprinkler intelligent controller is electrically connected to the water nozzle, the water nozzle is connected to the water pipe, and the water nozzle is arranged in the middle and lower part of the dust outlet channel. 7. The dust collection equipment of the wind power fusion dust collector nozzle according to claim 5, characterized in that: the right side of the water tank is provided with a water injection port, a water injection device button and a water tank scale. 8. The dust collection equipment for the suction nozzle of the wind power fusion dust collector according to claim 5, characterized in that: it also includes a handle and a universal wheel, the handle is arranged on the top of the casing, and the universal wheel is arranged on the casing bottom of the body.