CN106829315A - A kind of telescopic belt machine with ventilation cooling function and its method of work - Google Patents
A kind of telescopic belt machine with ventilation cooling function and its method of work Download PDFInfo
- Publication number
- CN106829315A CN106829315A CN201611147528.7A CN201611147528A CN106829315A CN 106829315 A CN106829315 A CN 106829315A CN 201611147528 A CN201611147528 A CN 201611147528A CN 106829315 A CN106829315 A CN 106829315A
- Authority
- CN
- China
- Prior art keywords
- telescopic
- telescopic belt
- pars contractilis
- cooling function
- steel rope
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/22—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration comprising a series of co-operating units
- B65G15/26—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration comprising a series of co-operating units extensible, e.g. telescopic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G67/00—Loading or unloading vehicles
- B65G67/02—Loading or unloading land vehicles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/065—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit fan combined with single duct; mounting arrangements of a fan in a duct
Abstract
The present invention relates to logistics transportation handling facilities technical field, disclose a kind of telescopic belt machine with ventilation cooling function and its method of work, its structure includes telescopic belt owner's body, blowing device, air supply duct and telescopic pipes, the blowing device is arranged on the afterbody of the telescopic belt owner body, one end of the air supply duct is connected with the blowing device, the other end of the air supply duct is connected with the telescopic pipes, the telescopic pipes are arranged on the pars contractilis of the telescopic belt owner body and flexible with the pars contractilis, the air outlet of the telescopic pipes is fixedly connected with the front end of the telescopic belt owner body.Also disclose the method for work of the telescopic belt machine.The cool breeze that the blowing device that the present invention will be arranged on telescopic belt machine body tail section is produced delivers to operation position by air supply duct and telescopic pipes, is effectively improved the problem that temperature in compartment is high, air permeability is poor.
Description
Technical field
It is more particularly to a kind of with the telescopic of ventilation cooling function the present invention relates to logistics transportation handling facilities technical field
Belt feeder and its method of work.
Background technology
It is vehicle quick despatch goods that telescopic belt machine is used logistics, express delivery industry more, due to logistics, express transportation car
It is generally the motor van of enclosed construction, it is in-car stuffy, especially in the case where summer temp is higher, the temperature in compartment
Up to more than 40 DEG C, and load and unload and complete a goods time for car typically more than half an hour, handling goods personnel long-time long exists
Worked in the compartment that temperature is higher, air permeability is poor, have a strong impact on operating personnel's physical and mental health and dress rate of discharging.
In the prior art to solve the problems, such as that temperature is too high in compartment, wind is being installed on tailstock wall or railway platform more
Fan or blower fan are divulged information to the personnel of handling goods in compartment, cooling.But the air supplying distance of general blower fan, fan is shorter and compartment
Three side sealing closes fresh air and is difficult to enter compartment afterbody, it is impossible to meet ventilation, the cooling problem in motor van compartment.
Therefore, design it is a can be effectively improved temperature in motor van compartment it is high ventilation it is poor, and energy quick despatch goods
Band ventilation cooling function telescopic belt machine it is very necessary.
The content of the invention
Regarding to the issue above, it is an object of the invention to provide it is a kind of with ventilation cooling function telescopic belt machine and its
Method of work, can quick despatch goods can be effectively improved in compartment the problem that temperature is high, air permeability is poor again.
According to an aspect of the invention, there is provided a kind of telescopic belt machine with ventilation cooling function, its structure bag
Telescopic belt owner body, blowing device, air supply duct and telescopic pipes are included, blowing device is arranged on telescopic belt owner's body
Afterbody, one end of air supply duct is connected with the air outlet of blowing device, and the other end of air supply duct is connected with telescopic pipes, stretches
Pipe is arranged on the pars contractilis of telescopic belt owner's body and flexible with pars contractilis, the air outlet of telescopic pipes with it is telescopic
The front end of belt feeder main body is fixedly connected.The cool breeze that blowing device is produced is directly sent to car by air supply duct and telescopic pipes
Inside railway carriage or compartment, interference and the resistance in the external world are eliminated, extend the air supplying distance of blowing device, reach precisely air-supply purpose.
Air supply duct is arranged on the bottom of telescopic belt owner's body.Air supply duct is arranged on telescopic belt owner's body
Bottom, make the more compact structure of telescopic belt owner's body, air supply duct does not interfere with the operating of telescopic belt owner's body,
The port of air supply duct can be made to be more convenient to be connected with the air outlet of blowing device simultaneously.
Telescopic pipes are arranged on the both sides of pars contractilis, and telescopic pipes are connected by steering knuckle with air supply duct.Will be flexible
The both sides that pipeline is arranged on pars contractilis do not influence the flexible of pars contractilis, can make wind from the both sides of telescopic belt owner's body be car
Railway carriage or compartment inside air feed, improves the ventilation quality and cooling-down effect of interior.Steering knuckle will be arranged on telescopic belt owner's body
The air supply duct of bottom is attached with the telescopic pipes for being arranged on pars contractilis both sides.
The both sides of pars contractilis are provided with support meanss, and support meanss are used for support telescopic pipeline.Support meanss are pars contractilis two
The telescopic pipes of side provide support, the both sides for being suspended on pars contractilis for alloing it good while flexible with pars contractilis.
Support meanss include multiple fixed blocks and and hanging steel rope, multiple fixed blocks are evenly distributed on the two of pars contractilis
Side, fixed block is fixedly connected with pars contractilis, and fixed number of blocks determines according to Expansion belt conveyor joint number, and three section Expansion belt conveyors can pacify
Three are filled, four sections can install four.Hanging steel rope is arranged on fixed block, and hanging steel rope is from telescopic belt owner's body
Before rear portion (rear portion herein refers to part relative with pars contractilis on telescopic belt owner's body) extends to pars contractilis
End, telescopic pipes are hung on hanging steel rope.Fixed block is evenly distributed in the both sides of retractor device, and hanging steel rope is set
In the top of multiple fixed blocks, fixed block multiple strong points for hanging steel rope is provided, hanging steel rope is used to hang telescoping tube
Road.
The groove for placing hanging steel rope is provided with the middle part of fixed block.Fixed block middle part is provided with groove, and the span of groove is big
In the diameter of hanging steel rope, hanging steel rope is placed in the groove of fixed block, prevents steel wire rope from being slid from fixed block.
Telescopic belt owner's body is provided with automatic cord winder.Automatic cord winder is arranged on telescopic belt owner's body
Rear portion, hanging steel rope is wrapped on automatic cord winder, and automatic cord winder is released or backrush with the flexible of pars contractilis
Hanging steel rope.The serving of automatic cord winder or put the speed of rope and telescopic belt owner's body flexible speed it is consistent.
Its serving puts the control of rope and the extension and contraction control of telescopic belt owner's body matches.When telescopic belt owner body extends
It is automatic to release hanging steel rope, the automatic rewinding hanging steel rope when telescopic belt owner body shrinks, make hanging steel rope with
When keep enough tension force for suspension telescopic pipes.
The afterbody of telescopic pipes is provided with metal air outlet, and metal air outlet is fixed with the front end of telescopic belt owner's body and connected
Connect.With the front end of pars contractilis be fixed together telescopic pipes by metal air outlet, telescopic pipes is stretched with pars contractilis
Contracting.It is connected by metal air outlet between telescopic pipes and pars contractilis, can be using welding and various metal connecting pieces so that
Connection is more solid and reliable, additionally, metal air outlet increased the stability of air outlet, reduces work of the telescopic pipes in air-out
With the vibrations of lower generation, noise is reduced.
Telescopic pipes are PVC wired hoses.PVC wired hoses have high resiliency, high intensity galvanized metal silk, pliability
It is good, anti-twist, good bending property.
The front end of telescopic belt owner's body is provided with the control button of control blowing device.Control button is used to control to blow
The air force of equipment, is located at telescopic when the front end that control button is arranged on telescopic belt owner's body is facilitated into charge and discharge operations
Handling human users' button of belt feeder body front end, controls the size of blowing device air quantity.
According to another aspect of the present invention, there is provided the work side of the telescopic belt machine of band ventilation cooling function
Method is as follows：The wind that blowing device is sent out is sent by after air supply duct and telescopic pipes.Specifically include following steps：
Step 1)：Telescopic belt owner's body is placed on the rear of vehicle, starts telescopic belt owner's body, make to stretch
The pars contractilis of formula belt feeder main body is extend into compartment, while automatic cord winder releases suspension steel wire with the elongation of pars contractilis
Rope, the telescopic pipes hung on hanging steel rope are extend into compartment under the drive of its air outlet with pars contractilis；
Step 2)：Blowing device is started by the control button of the front end of telescopic belt owner's body, blowing device passes through
Air supply duct and telescopic pipes send into compartment wind, start telescopic belt owner's body, start handling goods；
Step 3)：When during handling goods pars contractilis retract when, automatic cord winder with pars contractilis contraction backrush
Hanging steel rope, while telescopic pipes of the hanging on hanging steel rope shrink with pars contractilis；
Step 4)：After the completion of loading, blowing device is closed, pars contractilis is fully retracted, and telescopic pipes contract completely with pars contractilis
Return.
The beneficial effects of the invention are as follows：
1st, the telescopic belt machine of the band ventilation cooling function of example of the present invention, will be arranged on telescopic belt owner's body tail
The wind that the blowing device in portion is produced delivers to operation position by air supply duct and telescopic pipes, can be effectively improved temperature in compartment
High, air permeability difference problem, can realize the function of quick despatch goods again.
2nd, the telescopic belt machine of the band ventilation cooling function of example of the present invention, blowing device and ventilation shaft are arranged on
On telescopic belt owner's body, blowing device is directly fixed with telescopic belt owner's body, and simple operation solves blowing device
Cannot over long distances be blown the problem to compartment.
Brief description of the drawings
Fig. 1 is the front view of the embodiment of the present invention；
Fig. 2 is the top view of the embodiment of the present invention.
In figure：1- blower fans, 2- air supply ducts, 3- telescopic belt owner's bodies, 4- steering knuckles, 5- fixed blocks, 6-PVC steel
Silk flexible pipe, 7- hanging steel ropes, 8- metal air outlets, 9- control buttons, the automatic cord winders of 10-.
Specific embodiment
In order to be better understood by technical scheme, with reference to Figure of description and specific embodiment to the present invention
It is described further.
As depicted in figs. 1 and 2, a kind of telescopic belt machine with ventilation cooling function, including telescopic belt owner's body
3rd, blower fan 1 and air supply duct 2.The front end of telescopic belt owner body 3 is provided with the control button 9 of control fan delivery, and blower fan 1 sets
The afterbody in telescopic belt owner body 3 is put, air supply duct 2 is arranged on the bottom of telescopic belt owner body 3, air supply duct 2
One end be connected with the air outlet of blower fan 1, the other end of air supply duct 2 is connected by steering knuckle 4 with PVC wired hoses 6,
PVC wired hoses 6 are arranged on the both sides of the pars contractilis of telescopic belt owner body 3 and can be stretched with pars contractilis, PVC wired hoses
6 afterbody is provided with metal air outlet 8, and metal air outlet 8 is fixedly connected with the front end of telescopic belt owner body 3.
The both sides of the pars contractilis of telescopic belt owner body 3 are uniformly welded with multiple fixed blocks 5, and the centre of fixed block 5 sets
Fluted, hanging steel rope 7 is placed in the groove of multiple fixed blocks 5, and hanging steel rope 7 is from after telescopic belt owner's body
Portion extends to pars contractilis front end.The front end of hanging steel rope 7 is fixed with the front end of pars contractilis, after hanging steel rope 7
End is wrapped on automatic cord winder 10.Automatic cord winder 10 includes the two-way electricity being arranged on telescopic belt owner body 3
Motivation and the reel being arranged on reversing motor output shaft, hanging steel rope 7 are wrapped on reel, the control of reversing motor
Device is synchronous with the control device of telescopic belt owner body 3, and when telescopic belt owner body 3 extends, reversing motor is just
Turn to release hanging steel rope 7, when telescopic belt owner body 3 shrinks, reversing motor is inverted hanging steel rope volume 7
Enter.PVC wired hoses 6 are hung on hanging steel rope 7, after automatic cord winder 10 is arranged on telescopic belt owner body 3
Portion, automatic cord winder 10 is released or backrush hanging steel rope 7 with the flexible of pars contractilis.Hanging steel rope is set to keep foot at any time
Enough tension force is for suspension PVC wired hoses 6.
The method of work of the present embodiment is comprised the following steps：
Step 1)：Telescopic belt owner body 3 is placed on the rear of vehicle, starts telescopic belt owner body 3, make to stretch
The pars contractilis of contracting formula belt feeder main body 3 is extend into compartment, while automatic cord winder 10 starts being released with the elongation of pars contractilis
Hanging steel rope 7, hangs the PVC wired hoses 6 on hanging steel rope 7 under the drive of its metal air outlet 8 with telescopic
Belt feeder main body 3 is extend into compartment；
Step 2)：Blower fan 1 is started by the control button 9 of the front end of telescopic belt owner body 3, blower fan 1 is by air-supply
Pipeline 2 and PVC wired hoses 6 send into compartment wind, start telescopic belt owner body 3, start handling goods；
Step 3)：When the pars contractilis of the telescopic belt owner body 3 during handling goods is retracted, automatic cord winder
10 with the contraction of pars contractilis backrush hanging steel rope 7, while PVC wired hose 6 of the hanging on hanging steel rope 7 is with flexible
The pars contractilis of formula belt feeder main body 3 shrinks together；
Step 4)：After the completion of loading, blower fan 1 is closed by control button 9, the pars contractilis of telescopic belt owner body 3 is complete
Full reduced to reclaim back, PVC wired hoses 6 are fully retracted with the pars contractilis of telescopic belt owner body 3.
In the present embodiment, blowing device uses cool wind fan, but blowing device of the invention is not limited to use cool wind fan, also
Can be using other blowing devices such as fan, movable air conditioners.
Above description is only the preferred embodiment and the explanation to institute's application technology principle of the application.People in the art
Member is it should be appreciated that involved invention scope in the application, however it is not limited to the technology of the particular combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where the inventive concept is not departed from, is carried out by above-mentioned technical characteristic or its equivalent feature
Other technical schemes for being combined and being formed.Such as features described above has similar work(with (but not limited to) disclosed herein
The technical scheme that the technical characteristic of energy is replaced mutually and formed.
Claims (10)
1. it is a kind of with ventilation cooling function telescopic belt machine, it is characterised in that including telescopic belt owner body, air-supply set
Standby, air supply duct and telescopic pipes, the blowing device are arranged on the afterbody of the telescopic belt owner body, the ajutage
The one end in road is connected with the air outlet of the blowing device, and the other end of the air supply duct is connected with the telescopic pipes, institute
State telescopic pipes to be arranged on the pars contractilis of the telescopic belt owner body and flexible with the pars contractilis, the telescopic pipes
Air outlet be fixedly connected with the front end of the telescopic belt owner body.
2. it is according to claim 1 with ventilation cooling function telescopic belt machine, it is characterised in that the air supply duct
It is arranged on the bottom of the telescopic belt owner body.
3. the telescopic belt machine with ventilation cooling function according to claim 1 and 2, it is characterised in that described flexible
Pipeline is arranged on the both sides of the pars contractilis, and the telescopic pipes are connected by steering knuckle with the air supply duct.
4. it is according to claim 3 with ventilation cooling function telescopic belt machine, it is characterised in that the pars contractilis
Both sides are provided with support meanss, and the support meanss are used to support the telescopic pipes.
5. it is according to claim 4 with ventilation cooling function telescopic belt machine, it is characterised in that the support meanss
Including multiple fixed blocks and hanging steel rope, multiple fixed blocks are evenly distributed on the both sides of the pars contractilis, the fixation
Block is fixedly connected with the pars contractilis, and the hanging steel rope is arranged on multiple fixed blocks, the hanging steel rope from
The rear portion of the telescopic belt owner body extends to the front end of the pars contractilis, and the telescopic pipes hanging is described outstanding
Hang on steel wire rope.
6. it is according to claim 5 with ventilation cooling function telescopic belt machine, it is characterised in that the fixed block
Middle part is provided with the groove for placing the hanging steel rope.
7. it is according to claim 5 with ventilation cooling function telescopic belt machine, it is characterised in that the telescopic skin
Band owner's body is provided with automatic cord winder, and the automatic cord winder is arranged on the rear portion of the telescopic belt owner body,
The hanging steel rope is wrapped on the automatic cord winder, and the automatic cord winder is put with stretching for the pars contractilis
Go out or hanging steel rope described in backrush.
8. it is according to claim 7 with ventilation cooling function telescopic belt machine, it is characterised in that the telescopic pipes
Afterbody be provided with metal air outlet, the metal air outlet is fixedly connected with the front end of the telescopic belt owner body.
9. it is according to claim 8 with ventilation cooling function telescopic belt machine, it is characterised in that the telescopic skin
Front end with owner's body is provided with the control button for controlling the blowing device air force.
10. the work of the telescopic belt machine of a kind of band ventilation cooling function as described in any one in claim 7~9
Method, it is characterised in that comprise the following steps：
Step 1)：Telescopic belt owner's body is placed on the rear of vehicle, the pars contractilis of telescopic belt owner's body is stretched into
To in compartment, while automatic cord winder releases hanging steel rope with the elongation of pars contractilis, stretching on hanging steel rope is hung
Pipe is extend into compartment under the drive of its air outlet with pars contractilis；
Step 2)：Start blowing device, blowing device is sent into compartment wind by air supply duct and telescopic pipes, telescopic skin
Band starts handling goods；
Step 3)：When pars contractilis is retracted during handling goods, automatic cord winder hangs with the contraction backrush of pars contractilis
Steel wire rope, while telescopic pipes of the hanging on hanging steel rope shrink with pars contractilis；
Step 4)：After the completion of loading, blowing device is closed, pars contractilis is fully retracted, and telescopic pipes are fully retracted with pars contractilis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611147528.7A CN106829315A (en) | 2016-12-13 | 2016-12-13 | A kind of telescopic belt machine with ventilation cooling function and its method of work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611147528.7A CN106829315A (en) | 2016-12-13 | 2016-12-13 | A kind of telescopic belt machine with ventilation cooling function and its method of work |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106829315A true CN106829315A (en) | 2017-06-13 |
Family
ID=59140069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611147528.7A Pending CN106829315A (en) | 2016-12-13 | 2016-12-13 | A kind of telescopic belt machine with ventilation cooling function and its method of work |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106829315A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87207305U (en) * | 1987-07-16 | 1988-04-27 | 同济大学 | Fresh air feeder with extensible hose |
| JPH10150860A (en) * | 1996-11-19 | 1998-06-09 | M Raito:Kk | Ventilation system for greenhouse |
| CN1285288A (en) * | 1999-08-23 | 2001-02-28 | 圣州企业股份有限公司 | Implement for blowing cold/hot air in car |
| WO2001049595A1 (en) * | 1999-12-29 | 2001-07-12 | Siemens Ag | Extendable conveyor with additional boom section |
| CN203518063U (en) * | 2013-09-24 | 2014-04-02 | 中国烟草总公司深圳市公司 | Movable ventilating and cooling device |
| CN104555489A (en) * | 2014-12-24 | 2015-04-29 | 金锋馥（滁州）输送机械有限公司 | Loading and unloading vehicle |
| CN204643234U (en) * | 2015-05-14 | 2015-09-16 | 洛阳芳华机械制造有限公司 | A kind of dolly being convenient to cargo handing |
| CN105134277A (en) * | 2015-07-16 | 2015-12-09 | 武汉大学 | Free telescopic tube head device for ventilation of tunnel |
| CN205207933U (en) * | 2015-08-14 | 2016-05-04 | 中山市华夏通风设备有限公司 | Combined flexible telescopic air duct |
| CN206375287U (en) * | 2016-12-13 | 2017-08-04 | 顺丰速运有限公司 | A kind of telescopic belt machine of band ventilation cooling function |
-
2016
- 2016-12-13 CN CN201611147528.7A patent/CN106829315A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87207305U (en) * | 1987-07-16 | 1988-04-27 | 同济大学 | Fresh air feeder with extensible hose |
| JPH10150860A (en) * | 1996-11-19 | 1998-06-09 | M Raito:Kk | Ventilation system for greenhouse |
| CN1285288A (en) * | 1999-08-23 | 2001-02-28 | 圣州企业股份有限公司 | Implement for blowing cold/hot air in car |
| WO2001049595A1 (en) * | 1999-12-29 | 2001-07-12 | Siemens Ag | Extendable conveyor with additional boom section |
| CN203518063U (en) * | 2013-09-24 | 2014-04-02 | 中国烟草总公司深圳市公司 | Movable ventilating and cooling device |
| CN104555489A (en) * | 2014-12-24 | 2015-04-29 | 金锋馥（滁州）输送机械有限公司 | Loading and unloading vehicle |
| CN204643234U (en) * | 2015-05-14 | 2015-09-16 | 洛阳芳华机械制造有限公司 | A kind of dolly being convenient to cargo handing |
| CN105134277A (en) * | 2015-07-16 | 2015-12-09 | 武汉大学 | Free telescopic tube head device for ventilation of tunnel |
| CN205207933U (en) * | 2015-08-14 | 2016-05-04 | 中山市华夏通风设备有限公司 | Combined flexible telescopic air duct |
| CN206375287U (en) * | 2016-12-13 | 2017-08-04 | 顺丰速运有限公司 | A kind of telescopic belt machine of band ventilation cooling function |
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| PB01 | Publication | ||
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Application publication date: 20170613 |