CN105819381A - Portable walking type aerial work platform and use method thereof - Google Patents
Portable walking type aerial work platform and use method thereof Download PDFInfo
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- CN105819381A CN105819381A CN201610440991.4A CN201610440991A CN105819381A CN 105819381 A CN105819381 A CN 105819381A CN 201610440991 A CN201610440991 A CN 201610440991A CN 105819381 A CN105819381 A CN 105819381A
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- hanging basket
- rail
- hand cradle
- scaffold
- work platform
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Mechanical Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention discloses a portable walking type aerial work platform and a use method thereof. The portable walking type aerial work platform comprises a track flat car, a middle scaffold, a left hanging basket and a right hanging basket, wherein the left hanging basket and the right hanging basket are fixed to the left side and the right side of the middle scaffold. The track flat car comprises a frame and wheels. The frame comprises a front frame body and a rear frame body which are connected through hinges. Scaffold installing seats are arranged on the upper portion of the frame. Bearing seats with bearings are fixed below the two sides of the middle of the frame. Landing legs are arranged at the four corners of the frame. Rail clamping devices are installed at the bottoms of the landing legs. The bottom of the middle scaffold is fixedly inserted into the scaffold installing seats of the frame. The left hanging basket and the right hanging basket are installed on the left side and the right side of the middle scaffold through double-ring buckles respectively. An oblique supporting rod is arranged between the bottom of the left hanging basket or the right hanging basket and the middle scaffold. The side, away from the middle scaffold, of the left hanging basket or the right hanging basket is connected with a side face supporting rod through a double-ring buckle. A platform plate is arranged on the middle scaffold. Pedals leading to the platform plate are arranged on the hanging baskets.
Description
Technical field
The invention belongs to subway field of aerial work, be specifically related to a kind of portable walking aerial work platform and using method thereof.
Background technology
At present, the work high above the ground in subway tunnel mainly uses vertical ladder, double ladder, tower wagon, railway maintenance locomotive.Respective problem is all there is: needing personnel's lift to move when vertical ladder, double ladder shift position, need to find suitable position during erection, comfortableness and safety are poor when operation above when using the most several implement；The job area of tower wagon is little, can be only applied to the work high above the ground of rail zone line, when needs job area is bigger, uses the inefficient drawback of tower wagon to highlight；The consumption of railway maintenance locomotive is big, is typically only applied to extensive maintenance activity, the most relatively costly.
Summary of the invention
The present invention is directed to problem above, the purpose of the present invention is to propose to that a kind of job area is wide, safety is high, be easy to mobile fortune and the aerial work platform of low cost, thus solve the problems referred to above.
The technical scheme that the present invention provides is as follows: a kind of portable walking aerial work platform, in constructing metro tunnel, including track flat car, the crura intermedium hand cradle being arranged on track flat car, and it is separately fixed at left side Hanging Basket and the right side Hanging Basket of the crura intermedium hand cradle left and right sides；Described track flat car is placed in base track, including vehicle frame and wheel, described vehicle frame includes the front frame by gemel connection and Rear frame, described front frame and described Rear frame top are provided with scaffold mounting seat, and the middle part down either side of described front frame and described Rear frame is fixed with the bearing block of band bearing；Four corners of described vehicle frame are respectively equipped with supporting leg, and the bottom of described supporting leg is provided with the rail clamping device for being connected with track；The bottom of described crura intermedium hand cradle is fixedly plugged in the scaffold mounting seat of vehicle frame；Described left side Hanging Basket is arranged on the left side of described crura intermedium hand cradle by dicyclo fastener, and described right side Hanging Basket is arranged on the right side of described crura intermedium hand cradle by dicyclo fastener；The bottom of described left side Hanging Basket or described right side Hanging Basket respectively and is provided with inclined support bar between left side or the right side of described crura intermedium hand cradle, is used for reinforcing left side Hanging Basket and right side Hanging Basket；Described left side Hanging Basket or right side Hanging Basket are connected by dicyclo fastener away from the side of crura intermedium hand cradle the lateral bolster strut of level, for being horizontally supported at the sidewall of subway tunnel, prevents aerial work platform from turning on one's side；Described crura intermedium hand cradle is provided with on working landing slab, described left side Hanging Basket and described right side Hanging Basket and is equipped with the pedal towards landing slab.
Further, described left side Hanging Basket and described right side Hanging Basket are the rectangular frame of Guan Bi and are symmetricly set on the both sides of crura intermedium hand cradle, it is equipped with three grades of step-like pedals inside described left side Hanging Basket and described right side Hanging Basket, in two pendant basket, at least the bottom two-stage pedal of side is dismountable Active foot plate, remove the Hanging Basket after this two-stage pedal and can be enclosed within the outside of opposite side Hanging Basket, carrying and depositing time save space.
Further, described front frame and described Rear frame are rectangular frame, and the middle part of described rectangular frame is respectively equipped with an axletree, and two ends, described axletree left and right correspondence is arranged on the bearing block of band bearing, and the two ends of described axletree are provided with wheel.
Further, described rail clamping device includes bearing block, leading screw, handwheel, left side claw and right side claw, wherein said leading screw is arranged on bearing block by bearing, described handwheel is scheduled on the upper end of described leading screw by keying, described left side claw is by being arranged on described leading screw from the nut of body, and described right side claw is fixed on the claw of described left side by bolt and pin axle.
Further, if described crura intermedium hand cradle is formed by connecting by dried layer dismountable unit scaffold, described unit scaffold is made up of at least two panels single rack be arrangeding in parallel and the stabiliser bar being located between described single rack；Described single rack includes vertical rod and the cross bar being located between vertical rod；The vertical rod of bottom unit scaffold is plugged in the scaffold mounting seat of described vehicle frame, socket connection fixing with bearing pin between the vertical rod of levels unit scaffold, is provided with oblique oblique stabiliser bar and reinforces between the unit scaffold of adjacent two layers.
Further, described supporting leg bottom sides is provided with rail clamping device mounting seat, and described rail clamping device mounting seat is provided with rail clamping device.
Further, the lower end of described supporting leg is fixed with rubber blanket.
Further, the corner of the described vehicle frame of described track flat car has been designed with the diagonal brace of booster action.
Further, the both sides of described landing slab are provided with guardrail, in the bottom of upright rod of described guardrail is inserted into the vertical rod of the superiors' unit scaffold of described crura intermedium hand cradle and fix with bearing pin.
Present invention also offers a kind of using method taking walking aerial work platform as mentioned above when it's convenient, including assembling process, moving process and unloading process,
(1) described assembling process comprises the steps:
S1. track flat car launched and be placed on rail；
S2. install rail clamping device and make rail clamping device clamping rail；
S3. assembled good crura intermedium hand cradle based on scaffold mounting seat；
S4. according to construction need to install on suitable height on the left of Hanging Basket and right side Hanging Basket, and reinforce with inclined support bar；
S5., guardrail is installed around the landing slab of crura intermedium hand cradle；
S6. adjusting lateral bolster strut makes it shore on the sidewall of subway tunnel, is completed；
(2) described moving process comprises the steps:
S1. work high above the ground personnel first adjust withdrawal lateral bolster strut, then go to landing slab middle position；
S2. lower section workmen operates rail clamping device and unclamps rail；
S3. lower section workmen promotes portable walking aerial work platform to next target location；
S5. arrive back lower place workmen and operate rail clamping device clamping rail；
S6. work high above the ground personnel adjust lateral bolster strut and make it shore on the sidewall of subway tunnel, have moved；
(3) described unloading process comprises the steps:
S1. work high above the ground personnel first adjust withdrawal lateral bolster strut；
S2. left side Hanging Basket and the right side Hanging Basket of the crura intermedium hand cradle left and right sides are dismantled；
S3. guardrail is dismantled；
S4. dismounting crura intermedium hand cradle；
S5. operation rail clamping device unclamps rail；
S6. folding track flat car, and moved away from rail, dismounting completes.
Further, during rail clamping device work, left side claw and right side catch jacket are stuck on rail, and turn clockwise handwheel, and leading screw turns clockwise, and left side claw and right side claw move up along leading screw, with the rail head of the jaw clamping rail of supporting leg composition；Rotation hand wheel counterclockwise, leading screw rotates counterclockwise, and left side claw and right side claw move down along leading screw, with the rail head that the jaw of supporting leg composition unclamps rail.
The present invention compared with prior art, has the advantage that and has the beneficial effect that:
(1) this aerial work platform is because having crura intermedium hand cradle, left side Hanging Basket and right side Hanging Basket, so span is big, job area can cover whole subway tunnel cross section；
(2) this aerial work platform is provided with two set Anti-side-turning devices, top have lateral support masthead support prevent on subway tunnel sidewall rollover, lower section have rail clamping device clamp rail prevent rollover, so safety is high；
(3) this aerial work platform is mainly made up of track flat car, crura intermedium hand cradle, left side Hanging Basket and 4 modules of right side Hanging Basket, each module is light-duty design, intermodule is connected by Quick connection part, track flat car is collapsible, left side Hanging Basket and right side Hanging Basket estable, little so taking up room, quick release and installation, it is simple to a dead lift.
Accompanying drawing explanation
Fig. 1 is the axonometric chart of portable walking aerial work platform.
Fig. 2 is the axonometric chart of track flat car.
Fig. 3 is the axonometric chart of rail clamping device.
Fig. 4 is the axonometric chart of crura intermedium hand cradle.
Label in figure: 1-track flat car, scaffold in the middle of 2-, Hanging Basket on the left of 3-, Hanging Basket on the right side of 4-, 5-dicyclo fastener, 6-inclined support bar, 7-lateral bolster strut, 8-guardrail, 9-rail clamping device, 10-front frame, 11-Rear frame, 12-hinge, 13-axletree, 14-wheel, 15-bearing block, 16-scaffold mounting seat, 17-supporting leg, 18-rail clamping device mounting seat, 19-diagonal brace, 20-hands is taken turns, 21-bearing block, 22-leading screw, claw on the right side of 23-, claw on the left of 24-, 25-single rack, 26-bearing pin, 27-landing slab, 28-stabiliser bar.
Detailed description of the invention
In order to deepen the understanding of the present invention, below in conjunction with specific embodiment the invention will be further described explanation:
As Figure 1-4, a kind of portable walking aerial work platform, in constructing metro tunnel, including track flat car 1, the crura intermedium hand cradle 2 being arranged on track flat car, and it is separately fixed at left side Hanging Basket 3 and the right side Hanging Basket 4 of the crura intermedium hand cradle left and right sides；Described track flat car 1 is placed in base track, including vehicle frame and wheel, described vehicle frame includes front frame 10 and the Rear frame 11 connected by hinge 12, described front frame 10 and described Rear frame 11 top are provided with scaffold mounting seat 16, and the middle part down either side of described front frame 10 and described Rear frame 11 is fixed with the bearing block 15 of band bearing；Four corners of described vehicle frame are respectively equipped with supporting leg 17, and the bottom of described supporting leg 17 is provided with the rail clamping device 9 for being connected with track；The bottom of described crura intermedium hand cradle 2 is fixedly plugged in the scaffold mounting seat 16 of vehicle frame；Described left side Hanging Basket 3 is arranged on the left side of described crura intermedium hand cradle 2 by dicyclo fastener 5, and described right side Hanging Basket 4 is arranged on the right side of described crura intermedium hand cradle 2 by dicyclo fastener 5；The bottom of described left side Hanging Basket 3 or described right side Hanging Basket 4 respectively and is provided with inclined support bar 6 between left side or the right side of described crura intermedium hand cradle 2, make between inclined support bar 6 with described left side Hanging Basket 3 and described crura intermedium hand cradle 2, to be connected one triangle liptinite of formation, in like manner, also make between inclined support bar 6 with described right side Hanging Basket 4 and described crura intermedium hand cradle 2, to be also connected one triangle liptinite of formation, be used for reinforcing left side Hanging Basket 3 and right side Hanging Basket 4；Described left side Hanging Basket 3 or right side Hanging Basket 4 are connected by dicyclo fastener 5 away from the side of crura intermedium hand cradle 2 the lateral bolster strut 7 of level, for being horizontally supported at the sidewall of subway tunnel, prevents aerial work platform from turning on one's side；Described crura intermedium hand cradle 2 is provided with on working landing slab 27, described left side Hanging Basket 3 and described right side Hanging Basket 4 and is equipped with the pedal towards landing slab.
As shown in Figure 1, described left side Hanging Basket 3 and described right side Hanging Basket 4 are the rectangular frame of Guan Bi and are symmetricly set on the both sides of crura intermedium hand cradle 2, described left side Hanging Basket 3 and described right side Hanging Basket 4 inside are equipped with three grades of step-like pedals, the bottom two-stage pedal of described right side Hanging Basket 4 is dismountable Active foot plate, after removing this two-stage pedal, described right side Hanging Basket 4 can be enclosed within the outside of left side Hanging Basket 3, thus carrying and depositing time save space.
As shown in Figure 2, described front frame 10 and described Rear frame 11 are rectangular frame, the middle part of described rectangular frame is respectively equipped with an axletree 13, and described axletree about 13 two ends correspondence is arranged on the bearing block 15 of band bearing, and the two ends of described axletree 13 are provided with wheel 14.
As Figure 2-3, described rail clamping device 9 includes bearing block 21, leading screw 22, handwheel 20, left side claw 24 and right side claw 23, wherein said leading screw 22 is arranged on bearing block 21 by bearing, described handwheel 20 is scheduled on the upper end of described leading screw 22 by keying, described left side claw 24 is by being arranged on described leading screw 22 from the nut of body, and described right side claw 23 is fixed on described left side claw 24 by bolt and pin axle.
As shown in Figure 4, if described crura intermedium hand cradle 2 is formed by connecting by dried layer dismountable unit scaffold, described unit scaffold is made up of at least two panels single rack 25 be arrangeding in parallel and the stabiliser bar 28 being located between described single rack 25；Described single rack 25 includes vertical rod and the cross bar being located between vertical rod；The vertical rod of bottom unit scaffold is plugged in the scaffold mounting seat 16 of described vehicle frame, socket connection fixing with bearing pin 26 between the vertical rod of levels unit scaffold, is provided with oblique oblique stabiliser bar and reinforces between the unit scaffold of adjacent two layers.
Described supporting leg 17 bottom sides is provided with rail clamping device mounting seat 18, and described rail clamping device mounting seat 18 is provided with rail clamping device 9.
The lower end of described supporting leg 17 is fixed with rubber blanket.
The corner of the described vehicle frame of described track flat car 1 is designed with diagonal brace 19, reinforces the structure of vehicle frame.
The both sides of described landing slab 27 are provided with guardrail 8, fix in the bottom of upright rod of described guardrail 8 is inserted into the vertical rod of the superiors' unit scaffold of described crura intermedium hand cradle 2 and with bearing pin 26.
A kind of using method of portable walking aerial work platform, including assembling process, moving process and unloading process,
(1) described assembling process comprises the steps:
S1. track flat car launched and be placed on rail；
S2. install rail clamping device and make rail clamping device clamping rail；
S3. assembled good crura intermedium hand cradle based on scaffold mounting seat；
S4. according to construction need to install on suitable height on the left of Hanging Basket and right side Hanging Basket, and reinforce with inclined support bar；
S5., guardrail is installed around the landing slab of crura intermedium hand cradle；
S6. adjusting lateral bolster strut makes it shore on the sidewall of subway tunnel, is completed；
(2) described moving process comprises the steps:
S1. work high above the ground personnel first adjust withdrawal lateral bolster strut, then go to landing slab middle position；
S2. lower section workmen operates rail clamping device and unclamps rail；
S3. lower section workmen promotes portable walking aerial work platform to next target location；
S5. arrive back lower place workmen and operate rail clamping device clamping rail；
S6. work high above the ground personnel adjust lateral bolster strut and make it shore on the sidewall of subway tunnel, have moved；
(3) described unloading process comprises the steps:
S1. work high above the ground personnel first adjust withdrawal lateral bolster strut；
S2. left side Hanging Basket and the right side Hanging Basket of the crura intermedium hand cradle left and right sides are dismantled；
S3. guardrail is dismantled；
S4. dismounting crura intermedium hand cradle；
S5. operation rail clamping device unclamps rail；
S6. folding track flat car, and moved away from rail, dismounting completes.
During rail clamping device work, left side claw and right side catch jacket are stuck on rail, and turn clockwise handwheel, and leading screw turns clockwise, and left side claw and right side claw move up along leading screw, with the rail head of the jaw clamping rail of supporting leg composition；Rotation hand wheel counterclockwise, leading screw rotates counterclockwise, and left side claw and right side claw move down along leading screw, with the rail head that the jaw of supporting leg composition unclamps rail.
Above the present invention and embodiment thereof are described; this description is the most restricted; in addition to the implementation; the present invention can also have other embodiment; for the ordinary skill in the art; without departing from the principles and spirit of the present invention; these detailed description of the invention can be carried out multiple change, revise, replace and modification; these design constructional device same or analogous with the technical program or product and using method thereof without creative, all should fall within the scope and spirit of the invention.
Claims (10)
1. a portable walking aerial work platform, in constructing metro tunnel, it is characterised in that: include track flat car, the crura intermedium hand cradle being arranged on track flat car, and it is separately fixed at left side Hanging Basket and the right side Hanging Basket of the crura intermedium hand cradle left and right sides；Described track flat car is placed in base track, including vehicle frame and wheel, described vehicle frame includes the front frame by gemel connection and Rear frame, described front frame and described Rear frame top are provided with scaffold mounting seat, and the middle part down either side of described front frame and described Rear frame is fixed with the bearing block of band bearing；Four corners of described vehicle frame are respectively equipped with supporting leg, and the bottom of described supporting leg is provided with the rail clamping device for being connected with track；The bottom of described crura intermedium hand cradle is fixedly plugged in the scaffold mounting seat of vehicle frame；Described left side Hanging Basket is arranged on the left side of described crura intermedium hand cradle by dicyclo fastener, and described right side Hanging Basket is arranged on the right side of described crura intermedium hand cradle by dicyclo fastener；The bottom of described left side Hanging Basket or described right side Hanging Basket respectively and is provided with inclined support bar between left side or the right side of described crura intermedium hand cradle；Described left side Hanging Basket or right side Hanging Basket are connected by dicyclo fastener away from the side of crura intermedium hand cradle the lateral bolster strut of level；Described crura intermedium hand cradle is provided with on working landing slab, described left side Hanging Basket and described right side Hanging Basket and is equipped with the pedal towards landing slab.
Portable walking aerial work platform the most as claimed in claim 1, it is characterized in that: described left side Hanging Basket and described right side Hanging Basket are the rectangular frame of Guan Bi and are symmetricly set on the both sides of crura intermedium hand cradle, being equipped with three grades of step-like pedals inside described left side Hanging Basket and described right side Hanging Basket, in two pendant basket, at least the bottom two-stage pedal of side is dismountable Active foot plate.
Portable walking aerial work platform the most as claimed in claim 1, it is characterized in that: described front frame and described Rear frame are rectangular frame, the middle part of described rectangular frame is respectively equipped with an axletree, two ends, described axletree left and right correspondence is arranged on the bearing block of band bearing, and the two ends of described axletree are provided with wheel.
Portable walking aerial work platform the most as claimed in claim 1, it is characterized in that: described rail clamping device includes bearing block, leading screw, handwheel, left side claw and right side claw, wherein said leading screw is arranged on bearing block by bearing, described handwheel is scheduled on the upper end of described leading screw by keying, described left side claw is by being arranged on described leading screw from the nut of body, and described right side claw is fixed on the claw of described left side by bolt and pin axle.
Portable walking aerial work platform the most as claimed in claim 1, it is characterized in that: if described crura intermedium hand cradle is formed by connecting by dried layer dismountable unit scaffold, described unit scaffold is made up of at least two panels single rack be arrangeding in parallel and the stabiliser bar being located between described single rack；Described single rack includes vertical rod and the cross bar being located between vertical rod；The vertical rod of bottom unit scaffold is plugged in the scaffold mounting seat of described vehicle frame, socket connection fixing with bearing pin between the vertical rod of levels unit scaffold, is provided with oblique oblique stabiliser bar and reinforces between the unit scaffold of adjacent two layers.
Portable walking aerial work platform the most as claimed in claim 1, it is characterised in that: described supporting leg bottom sides is provided with rail clamping device mounting seat, and described rail clamping device mounting seat is provided with rail clamping device；The lower end of described supporting leg is fixed with rubber blanket.
Portable walking aerial work platform the most as claimed in claim 1, it is characterised in that: the corner of the described vehicle frame of described track flat car has been designed with the diagonal brace of booster action.
Portable walking aerial work platform the most as claimed in claim 5, it is characterised in that: the both sides of described landing slab are provided with guardrail, in the bottom of upright rod of described guardrail is inserted into the vertical rod of the superiors' unit scaffold of described crura intermedium hand cradle and fix with bearing pin.
9. the using method of the portable walking aerial work platform as described in claim 1-8 any one, it is characterised in that: include assembling process, moving process and unloading process,
(1) described assembling process comprises the steps:
S1. track flat car launched and be placed on rail；
S2. install rail clamping device and make rail clamping device clamping rail；
S3. assembled good crura intermedium hand cradle based on scaffold mounting seat；
S4. Hanging Basket and right side Hanging Basket on the left of installing, and reinforce with inclined support bar；
S5., guardrail is installed around the landing slab of crura intermedium hand cradle；
S6. adjusting lateral bolster strut makes it shore on the sidewall of subway tunnel, is completed；
(2) described moving process comprises the steps:
S1. work high above the ground personnel first adjust withdrawal lateral bolster strut, then go to landing slab middle position；
S2. lower section workmen operates rail clamping device and unclamps rail；
S3. lower section workmen promotes portable walking aerial work platform to next target location；
S5. arrive back lower place workmen and operate rail clamping device clamping rail；
S6. work high above the ground personnel adjust lateral bolster strut and make it shore on the sidewall of subway tunnel, have moved；
(3) described unloading process comprises the steps:
S1. work high above the ground personnel first adjust withdrawal lateral bolster strut；
S2. left side Hanging Basket and the right side Hanging Basket of the crura intermedium hand cradle left and right sides are dismantled；
S3. guardrail is dismantled；
S4. dismounting crura intermedium hand cradle；
S5. operation rail clamping device unclamps rail；
S6. folding track flat car, and moved away from rail, dismounting completes.
The using method of portable walking aerial work platform the most according to claim 9, it is characterized in that: during rail clamping device work, left side claw and right side catch jacket are stuck on rail, turn clockwise handwheel, leading screw turns clockwise, left side claw and right side claw move up along leading screw, with the rail head of the jaw clamping rail of supporting leg composition；Rotation hand wheel counterclockwise, leading screw rotates counterclockwise, and left side claw and right side claw move down along leading screw, with the rail head that the jaw of supporting leg composition unclamps rail.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610440991.4A CN105819381B (en) | 2016-06-20 | 2016-06-20 | A kind of application method of portable walking aerial work platform |
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| CN201610440991.4A CN105819381B (en) | 2016-06-20 | 2016-06-20 | A kind of application method of portable walking aerial work platform |
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| CN105819381B CN105819381B (en) | 2018-02-09 |
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| CN106758849A (en) * | 2017-01-26 | 2017-05-31 | 中国人民解放军国防科学技术大学 | The detachable highway steel bridge that low level installs docking carries erection car |
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| CN110761544A (en) * | 2019-12-03 | 2020-02-07 | 安徽兴宇轨道装备有限公司 | Frame for trackless construction operation vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106758849A (en) * | 2017-01-26 | 2017-05-31 | 中国人民解放军国防科学技术大学 | The detachable highway steel bridge that low level installs docking carries erection car |
| CN108661661A (en) * | 2018-07-27 | 2018-10-16 | 中国铁建大桥工程局集团有限公司 | A kind of detachable operation platform of operational railway movement |
| CN110761544A (en) * | 2019-12-03 | 2020-02-07 | 安徽兴宇轨道装备有限公司 | Frame for trackless construction operation vehicle |
| CN110761544B (en) * | 2019-12-03 | 2024-04-30 | 安徽兴宇轨道装备有限公司 | Frame for trackless construction operation vehicle |
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|---|---|
| CN105819381B (en) | 2018-02-09 |
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