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CN108749682A - Highway corrugated sheet is unpowered to unload device - Google Patents

Highway corrugated sheet is unpowered to unload device Download PDF

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Publication number
CN108749682A
CN108749682A CN201810655845.2A CN201810655845A CN108749682A CN 108749682 A CN108749682 A CN 108749682A CN 201810655845 A CN201810655845 A CN 201810655845A CN 108749682 A CN108749682 A CN 108749682A
Authority
CN
China
Prior art keywords
girder
sprocket wheel
unloading
corrugated sheet
highway
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.)
Withdrawn
Application number
CN201810655845.2A
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Chinese (zh)
Inventor
于志松
赵明印
崔砚东
吴波
赵海旭
沈顺新
杜光辉
马建朋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WEIFANG EAST STEEL PIPE CO Ltd
Original Assignee
WEIFANG EAST STEEL PIPE CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WEIFANG EAST STEEL PIPE CO Ltd filed Critical WEIFANG EAST STEEL PIPE CO Ltd
Priority to CN201810655845.2A priority Critical patent/CN108749682A/en
Publication of CN108749682A publication Critical patent/CN108749682A/en
Withdrawn legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60PVEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/43Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using a loading ramp mounted on the vehicle

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Loading Or Unloading Of Vehicles (AREA)

Abstract

The invention discloses a kind of unpowered devices of unloading of highway corrugated sheet, include the supporting support walked with garage;The supporting support includes right girder and left girder.The present invention is inputted without external connection power, and a large amount of engineering trucks are saved compared to traditional work(Crane, fork truck etc.)Operating cost;Equipment realizes unload over long distances during lath proximate matter from vehicle to the automatic conveying to road surface under vehicle, reached and reduced operating personnel, reduce operation intensity, improve the multiple advantages such as working efficiency, the damage for mitigating road surface and profile material;Due to belonging to device of unloading over long distances, the activity duration of driver and the personnel that unload is greatly saved in the promotion of efficiency.

Description

Highway corrugated sheet is unpowered to unload device
Technical field
The present invention relates to a kind of unpowered devices of unloading of highway corrugated sheet, specifically, are related to a kind of highway corrugated sheet without dynamic Power is unloaded device, and handling facilities technical field is belonged to.
Background technology
Highway barrier is a kind of clod wash based plate, meet national standard GB/T 31439.1-2015 corrugated beam steeled protection fences and GBT31439.2-2015 tri- corrugated beam steeled protection fences, two kinds of forms.Specification is 4320*310*4 and 4320*506*3 respectively(4)Two kinds Specification, every piece of weight reach 66kg, 76kg or 110kg.
Highway needs to be laid with per every kilometer of side 250 pieces of guardrails, and every piece of clipping room is away from being 4 meters.This requires drawn with vehicle When to highway construction scene, need every four meters one piece of the corrugated sheet of vehicle being placed on roadside.Currently without this charging crane Tool is substantially manually carried, and since vehicle cargo height is higher, labor intensity is big, and safety is poor.
Load highway barrier corrugated sheet vehicle, during highway building-site is unloaded, using along road running and by The mode that construction personnel's coordinating operation vehicle block-by-block spreads plate is unloaded, in order to install.It unloads distance(One truck guardrail board 2-3 kilometers can generally be installed), there are 4-6 worker's block-by-blocks to be manually carried to special operation vehicle in the process.And by working truck from Shipment vehicle is hoisted to beside the column of roadside, then is unloaded to road surface from allocation and transportation vehicle by 2-4 workers and is installed;If construction Unit will increase labor intensity because economic cause is not configured with working truck, very likely be adopted to save strength worker Cut-off connects the behavior for throwing away plate toward road surface from vehicle, this behavior major injury road surface and guardrail, and safety is buried for later stage guardrail use Hidden danger.
Invention content
The technical problem to be solved by the present invention is to be directed to the above deficiency, the present invention, which provides one kind, can reach reduction operation people Member reduces operation intensity, improves working efficiency, mitigating the highway corrugated sheet of the purpose of damage of road surface and profile material and unpowered unload Vehicle device.
In order to solve the above technical problems, the present invention uses following technical scheme:A kind of unpowered device of unloading of highway corrugated sheet, It include the supporting support walked with garage;The supporting support includes right girder and left girder.
A kind of prioritization scheme is provided with bearing diagonal beam, the right girder and left girder between the right girder, left girder Top is provided with synchronous beam and synchronous beam connects right girder and left girder;
It is provided with friction pulley and bevel gear pair on the right girder;The friction pulley and bevel gear pair are all positioned in left girder lower end Inside is fixed on rolling bearing units on the tablet of left girder lower end inside, and tablet is welding with girder on-link mode (OLM).
The right girder and left girder are respectively arranged with chain, and pusher dog is provided on the chain.
The right girder and left girder are respectively arranged with chain, and pusher dog is provided on the chain.
Further, pusher dog is equidistantly mounted on chain.
Further, friction pulley regard the 1/3-1/5 effects of originally unload device and guardrail board total weight as pressure on the ground, It is allowed to form stiction with ground;F=μ N, the μ in formula are dynamic friction factor;Wherein μ and N are sufficiently large, ensure that friction pulley Without opposite sliding between ground.
Further, the wheel footpath size of the friction pulley unloads plate required distance by calculating to obtain to be satisfied, including but not It is confined to highway W plate guardrails and unloads plate distance;
Computational methods:
The first step:N1=S/ Φ π N1=unload next piece of plate friction pulley and need the number of turns S rotated=unload following distance
Second step:N2=N1*I
I=the transmission ratio N2 of bevel gear pair=unloads next piece of plate sprocket wheel and needs the number of turns rotated
Third walks:L=N2*n*P
The number of teeth P of the n=sprocket wheel=pusher dog spacing of chain pitch L=two
Further, the universal caster wheel of steering force is provided on the left girder, universal wheel is on holder, its purpose is that device of unloading can It is turned to vehicle.
Further, be provided on the right girder and left girder can up and down adjustment obtain hanger;There is hook on the hanger.
Further, it is provided with advancing slip grillage on the right girder;The front slide frame is arranged in the bottom end of right girder;Institute It states and is provided with tail skid frame on left girder, the tail skid frame is arranged in the bottom end of left girder.
Further, the top of the left girder is provided with swelling device, and swelling device is vertical with connecting base bearing.
Further, the device of unloading further includes sprocket wheel, the sprocket wheel include the first sprocket wheel, the second sprocket wheel, third sprocket wheel, 4th sprocket wheel, first sprocket wheel are arranged on the top of right girder, and third sprocket wheel is arranged in the lower part of right girder, and the second sprocket wheel is set It sets on the top of left girder, the 4th sprocket wheel is arranged in the lower part of left girder;
The friction pulley is contacted with ground generates frictional force, provides power for equipment under the friction on ground, passes through gear drive Speed change gear conducts power to the third sprocket wheel in the lower right corner, and drive chain drives pusher dog to move down;
Power synchronous is:Right the first sprocket wheel of the girder top rotation of right side chain-driving, then the first sprocket wheel, which drives, synchronizes beam rotation, Then it synchronizes sill bolt and moves left the second sprocket wheel of girder top rotation, then the second sprocket wheel drives left side chain rotation, realizes synchronous turn It is dynamic;
Driving left side chain is moved with right side chain syn-chro-step;
Lath proximate matter is placed on pusher dog, subsequent lath proximate matter advancing slip grillage, tail skid frame support under be detached from pusher dog, waveform Plate rear end is first slipped to ground from tail skid frame, and under the effect of gravity, front end is landed under the buffering of advancing slip grillage, and it is complete to unload plate automatically At.
The present invention after the above technical solution is adopted, compared with prior art, has the following advantages:
Equipment itself is inputted without external connection power, and a large amount of engineering trucks are saved compared to traditional work(Crane, fork truck etc.)Operating cost; Equipment realizes unload over long distances during lath proximate matter from vehicle to the automatic conveying to road surface under vehicle, reached reduction operation Personnel reduce operation intensity, improve the multiple advantages such as working efficiency, the damage for mitigating road surface and profile material;Due to belong to it is long away from From device of unloading, the activity duration of driver and the personnel that unload is greatly saved in the promotion of efficiency.
The present invention is described in detail with reference to the accompanying drawings and examples.
Description of the drawings
Fig. 1 is the structural schematic diagram of device of unloading;
Fig. 2 is the structural schematic diagram of gear pair installation;
Fig. 3 is the enlarged drawing of A in Fig. 2;
Fig. 4 is the structural schematic diagram of advancing slip grillage;
In figure,
The right girders of 1-, the left girders of 2-, 3- bearing diagonal beams, 4- sprocket wheels, the first sprocket wheels of 4-1-, the second sprocket wheels of 4-2-, 4-3- third chains Wheel, the 4th sprocket wheels of 4-4-, 5- connecting base bearings, 6- band plummer block housing bearings, 7- friction pulleys, 8- bevel gear pairs, 9- are servo-actuated wheel shaft, 10- Bevel gear shaft, 11- hangers, 12- chains, 13- pusher dogs, 14- cochain wheel shafts, 15- synchronize beam, and 16- fixing bolts M10,17- are fixed Bolt M16,18- swelling device, 19- lower sprocket axis, 20- universal wheels, 21- tail skid framves, 22- is advancing slip grillage, 23- hooks, 31- Rotate tube body, 32- rolling bearings, 33- axis, 34- base tubes.
Specific implementation mode
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control illustrates this hair Bright specific implementation mode.
1 highway corrugated sheet of embodiment is unpowered, and device of unloading is standby
As shown in Figs 1-4, a kind of unpowered device of unloading of highway corrugated sheet of present invention offer is standby, includes the support branch walked with garage Frame, supporting support include right girder 1, left girder 2, bearing diagonal beam 3 and synchronous beam 15,
The right girder 1, left girder 2, bearing diagonal beam 3 are responsible for carrying, link, cooperation associated mechanisms and vehicle;
The synchronous beam 15 is both synchronous beam and structural beams.
The synchronous beam 15 is responsible for criss-cross construction being combined into triangle, forms rock-steady structure, and be responsible for the right Driving force on chain is transferred on the chain of the left side.
The friction pulley 7 and bevel gear pair 8 of power are provided on the right girder 1.
Originally device biggest advantage of unloading is unpowered input, and the gravitional force of guardrail board itself is unloaded, machine is passed through Tool speed change, deflecting function are slowly placed guardrail board on the ground using the frictional force of friction pulley 7 and ground.This equipment can To be placed on three pieces of guardrail boards on pusher dog 13 simultaneously, pusher dog 13 is started to move downward by the gravity of guardrail board, drives chain 12, Sprocket wheel 4, bevel gear pair 8 finally arrive friction pulley 7.
Friction pulley 7 will originally unload the 1/4 of device and guardrail board total weight(About)Effect is used as pressure on the ground, is allowed to and ground Face forms stiction.F=μ N, the μ in formula are dynamic friction factor.Wherein μ and N are sufficiently large, ensure that friction pulley and ground it Between without opposite sliding.It is also the guarantee for unloading 4 meters every piece of plate spacing simultaneously.
The wheel footpath size of the friction pulley 7 unloads plate required distance by calculating to obtain to be satisfied(Column spacing is four meters, institute To unload plate distance also one piece of plate is fallen for every four meters automatically), plate distance is unloaded including but not limited to highway W plate guardrails;
Computational methods:Unload interval S=4000mm
1, next piece of plate friction pulley of N1=L/ Φ π N1=unload needs the number of turns rotated.
2、N2=N1*I
I=the transmission ratio N2 of bevel gear pair=unloads next piece of plate sprocket wheel and needs the number of turns rotated
3、L=N2*n*P
The number of teeth P of the n=sprocket wheel=pusher dog spacing of chain pitch L=two
Reduction ratio=0.58 400mm is used by calculating the friction pulley outer diameters of the design L=1017
The universal caster wheel 4 of steering force is provided on the left girder 2,
The tablet of one piece of 10*30 of vertical Main Girder Welding or so, universal wheel are weldingly fixed on the tablet bottom in 2 lower end of left girder Portion.Universal wheel is its purpose is that device of unloading can be turned to vehicle.
The mechanism is responsible for the equipment during turn inside diameter and integrally turns to;
Its purpose is unloaded being turned to vehicle of device, and the truck of unloading needs adjustment direction, and device of unloading can be close to vehicle body and is servo-actuated It advances.
Be arranged on holder with bodywork height width-telescopic adjustment mechanism hanger 11, can root on right girder 1 and left girder 2 According to position up and down adjustment installation site.
Because at present transport guardrail board truck be substantially 35 tons or so of load-carrying heavy semi-trailer, platform floor from Ground height is different, and about height is between 1.1-1.7 meters.In order to ensure to unload device and trailer compartment can be smoothly reliably connected, Need hanger 11 can be with up and down adjustment position to adapt to different overall height.Hanger 11 is using the fixed form of bolt, on the right side Girder 1 and left girder 2 are equipped with adjustable installation screw.As Figure 2-3.
Fig. 3 is shown as the position adjustable of hanger 11, and then screw fixes end, the adjustable hanger for 2 points of translation every time 11 are responsible for when vehicle itself highly changes by adjusting the mechanism to be that equipment meets demand of unloading;
Hanger 11 has hook 23, hook 23 can be with the reliable chain of automobile boxboard as the bindiny mechanism with automobile on the hanger 11 It is connected together, guarantee is unloaded, and device is whole to be linked together with automobile.
The adjustable hanger 11 be responsible for holder and automobile link and it is synchronous, provide support for whole equipment, it is ensured that whole A equipment and automobile position are relatively fixed;
The right girder 1 and left girder 2 are respectively arranged with chain 12, and pusher dog 13 is provided on the chain 12,
Pusher dog 13 is equidistantly mounted on chain 12(This is the guarantee of every four meters next block of plates), pusher dog 13 is included to prevent guardrail board The support screw of gravity rolling.
The advancing slip grillage 22 is arranged in the bottom end of right girder 1, and the tail skid frame 21 is arranged in the bottom end of left girder 2.
The advancing slip grillage 22 and tail skid frame 21 are responsible for the transport during plank is got off and protection;
Chain 12 on right girder 1 provides power by friction pulley 7, and the 12 unpowered input of chain on left girder 2, so by Power transmission synchronizes beam 15 and provides power for the chain on left girder 2 and ensure that the rotation of both sides chain 12 synchronizes.
The advancing slip grillage of the buffer gear for avoiding profile material from directly landing 22 is provided on right girder 1;
The buffer gear tail skid frame 21 for avoiding profile material from directly landing is provided on left girder 2,
The on-link mode (OLM) of advancing slip grillage 22 and right girder 1 is by certain angle(Slide plate frame is parallel to the ground)Welding.
The on-link mode (OLM) of tail skid frame 21 and left girder 2 is by certain angle(Slide plate frame is parallel to the ground)Welding.
The advancing slip grillage 22, tail skid frame 21 are responsible for that lath proximate matter is avoided to be in direct contact the road surface and lath that road surface is brought The both sides of proximate matter damage.
Swelling device 18 ensures that chain is in suitable stress always.
Swelling device 18 is in relaxed state when installing chain 12, and chain 12, which passes through after installation is complete, adjusts swelling device 18 tensioner screw makes the 5 abundant stress of connecting base bearing of pedestal upper end both sides open outside and chain is allowed to be in tensioner state, swelling device 18 with connecting base bearing be it is vertical.
Using highway barrier corrugated sheet as example explanation.
After integral device is installed by design drawing in the figure, hanger 11 and the truck board of haulage vehicle are linked Fixed, friction pulley 7 starts to provide power for equipment under the friction on ground when haulage vehicle at the uniform velocity advances, and is become by gear drive Speed variator, which conducts power to the third sprocket wheel 4-3 in the lower right corner, drive chain 12-1, drives pusher dog 13 to start to move down.
The sprocket wheel 4 include the first sprocket wheel 4-1, the second sprocket wheel 4-2, third sprocket wheel 4-3, the 4th sprocket wheel 4-4, described first Sprocket wheel 4-1 is arranged on the top of right girder 1, and third sprocket wheel 4-3 is arranged in the lower part of right girder 1, and the second sprocket wheel 4-2 is arranged on a left side The top of girder 2, the 4th sprocket wheel 4-4 are arranged in the lower part of left girder 2.
Power synchronous is:Right side chain 12 drives 1 top the first sprocket wheel 4-1 of right girder to rotate, then the first sprocket wheel 4-1 bands Dynamic synchronous beam 15 rotates, and then synchronizes beam 15 and 2 top the second sprocket wheel 4-2 of left girder is driven to rotate, and then the second sprocket wheel 4-2 drives Chain 12 rotates on the left of left side, realizes and rotates synchronously.
Driving left side chain 12 is moved synchronously with right side chain 12.
Manually the lath proximate matter on vehicle is placed on pusher dog 13 in suitable position, by a distance back plate section bar preceding Slide plate frame 22, tail skid frame 21 support under disengaging pusher dog 13,
Corrugated sheet rear end is first slipped to ground from tail skid frame 21 at this time, and then under the effect of gravity, front end is in advancing slip grillage 22 The lower landing of buffering, unloads plate completion automatically.
22 concrete structure of advancing slip grillage is as shown in Figure 4.
Wherein:31- rotates tube body, 32- rolling bearings, 33- axis, 34- base tubes.
The advancing slip grillage 22 include rotation tube body 31, rolling bearing 32, each corner location is welding, axis 33 and tube body 31 be screw connection.
The above is the citing of best mode for carrying out the invention, wherein the part that do not address in detail is that this field is common The common knowledge of technical staff.Protection scope of the present invention is based on the contents of the claims, any technology based on the present invention The equivalent transformation of enlightenment and progress, also within protection scope of the present invention.

Claims (10)

1. a kind of unpowered device of unloading of highway corrugated sheet, it is characterised in that:It include the supporting support walked with garage;The support branch Frame includes right girder(1)With left girder(2).
2. a kind of unpowered device of unloading of highway corrugated sheet as described in claim 1, it is characterised in that:The right girder(1), it is left Girder(2)Between be provided with bearing diagonal beam(3), the right girder(1)With left girder(2)Top be provided with synchronous beam(15)And Synchronous beam(15)Connect right girder(1)With left girder(2);
The right girder(1)On be provided with friction pulley(7)And bevel gear pair(8);The friction pulley(7)And bevel gear pair(8)? It is placed in left girder(1)Lower end inside is fixed on rolling bearing units perpendicular to left girder(1)On the tablet of lower end inside;
The right girder(1)With left girder(2)It is respectively arranged with chain(12), the chain(12)On be provided with pusher dog(13).
3. a kind of unpowered device of unloading of highway corrugated sheet as described in claim 1, it is characterised in that:Pusher dog(13)Equidistantly peace Mounted in chain(12)On.
4. a kind of unpowered device of unloading of highway corrugated sheet as claimed in claim 2, it is characterised in that:Friction pulley(7)It will originally unload Vehicle device and the 1/3-1/5 of guardrail board total weight effects are used as pressure on the ground, are allowed to form stiction with ground;f =μN , the μ in formula is dynamic friction factor;Wherein μ and N are sufficiently large, ensure that friction pulley(7)Without opposite sliding between ground.
5. a kind of unpowered device of unloading of highway corrugated sheet as claimed in claim 4, it is characterised in that:The friction pulley(7)'s Wheel footpath size unloads plate required distance by calculating to obtain to be satisfied, and plate distance is unloaded including but not limited to highway W plate guardrails;
Computational methods:
The first step:N1=S/ Φ π N1=unload next piece of plate friction pulley and need the number of turns S rotated=unload following distance
Second step:N2=N1*I I=the transmission ratio N2 of bevel gear pair=unload next piece of plate sprocket wheel and need the number of turns rotated
Third walks:The number of teeth P of the L=N2*n*P n=sprocket wheel=pusher dog spacing of chain pitch L=two.
6. a kind of unpowered device of unloading of highway corrugated sheet as described in claim 1, it is characterised in that:The left girder(2)On The universal caster wheel for being provided with steering force is set(4).
7. a kind of unpowered device of unloading of highway corrugated sheet as described in claim 1, it is characterised in that:The right girder(1)With Left girder(2)On be provided with can up and down adjustment obtain hanger(11);The hanger(11)On have hook(23).
8. a kind of unpowered device of unloading of highway corrugated sheet as claimed in claim 2, it is characterised in that:The right girder(1)On It is provided with advancing slip grillage(22);The advancing slip grillage(22)It is arranged in right girder(1)Bottom end;The left girder(2)Upper setting There is tail skid frame(21), the tail skid frame(21)It is arranged in left girder(2)Bottom end.
9. a kind of unpowered device of unloading of highway corrugated sheet as described in claim 1, it is characterised in that:The left girder(2)'s Top is provided with swelling device(18), swelling device(18)With connecting base bearing(5)It is vertical.
10. a kind of unpowered device of unloading of highway corrugated sheet as claimed in claim 8, it is characterised in that:The device of unloading also wraps It includes(4), the sprocket wheel(4)Including first sprocket wheel(4-1), the second sprocket wheel(4-2), third sprocket wheel(4-3), the 4th sprocket wheel(4- 4), first sprocket wheel(4-1)It is arranged in right girder(1)Top, third sprocket wheel(4-3)It is arranged in right girder(1)Lower part, Second sprocket wheel(4-2)It is arranged in left girder(2)Top, the 4th sprocket wheel(4-4)It is arranged in left girder(2)Lower part;
The friction pulley(7)It is contacted with ground and generates frictional force, provided power for equipment under the friction on ground, passed by gear Dynamic speed change gear conducts power to the third sprocket wheel in the lower right corner(4-3), drive chain(12)Drive pusher dog(13)It moves down;
Power synchronous is:Right side chain(12)Drive right girder(1)The first sprocket wheel of top(4-1)It rotates, then the first sprocket wheel(4- 1)Drive synchronous beam(15)Then rotation synchronizes beam(15)Drive left girder(2)The second sprocket wheel of top(4-2)Rotation, then the Two sprocket wheels(4-2)Drive left side chain(12)Rotation is realized and is rotated synchronously;
Driving left side chain(12)With right side chain(12)It moves synchronously;
Lath proximate matter is placed on pusher dog(13)On, subsequent lath proximate matter is in advancing slip grillage(22), tail skid frame(21)Support under It is detached from pusher dog(13), corrugated sheet rear end is first from tail skid frame(21)It is slipped to ground, under the effect of gravity, front end is in advancing slip grillage (22)Buffering under land, unload automatically plate completion.
CN201810655845.2A 2018-06-23 2018-06-23 Highway corrugated sheet is unpowered to unload device Withdrawn CN108749682A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810655845.2A CN108749682A (en) 2018-06-23 2018-06-23 Highway corrugated sheet is unpowered to unload device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810655845.2A CN108749682A (en) 2018-06-23 2018-06-23 Highway corrugated sheet is unpowered to unload device

Publications (1)

Publication Number Publication Date
CN108749682A true CN108749682A (en) 2018-11-06

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ID=63976514

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810655845.2A Withdrawn CN108749682A (en) 2018-06-23 2018-06-23 Highway corrugated sheet is unpowered to unload device

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109941781A (en) * 2018-11-22 2019-06-28 徐州万盛工程设备有限公司 One kind unloading wave beams of highway steel guard rail device from haulage vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109941781A (en) * 2018-11-22 2019-06-28 徐州万盛工程设备有限公司 One kind unloading wave beams of highway steel guard rail device from haulage vehicle
CN109941781B (en) * 2018-11-22 2024-06-04 徐州万盛工程设备有限公司 Device for unloading highway waveform beam steel guardrail from transport vehicle

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Application publication date: 20181106