CN110778091B - Trackless construction operation vehicle - Google Patents
Trackless construction operation vehicle Download PDFInfo
- Publication number
- CN110778091B CN110778091B CN201911218149.6A CN201911218149A CN110778091B CN 110778091 B CN110778091 B CN 110778091B CN 201911218149 A CN201911218149 A CN 201911218149A CN 110778091 B CN110778091 B CN 110778091B
- Authority
- CN
- China
- Prior art keywords
- frame
- support
- support frame
- adjusting
- supporting
- 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.)
- Active
Links
- 238000010276 construction Methods 0.000 title claims abstract description 23
- 238000005192 partition Methods 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 241001669679 Eleotris Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/24—Scaffolds primarily resting on the ground comprising essentially special base constructions; comprising essentially special ground-engaging parts, e.g. inclined struts, wheels
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/14—Railings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/24—Scaffolds primarily resting on the ground comprising essentially special base constructions; comprising essentially special ground-engaging parts, e.g. inclined struts, wheels
- E04G2001/242—Scaffolds movable on wheels or tracks
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Handcart (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention relates to a trackless construction operation vehicle, which comprises a support frame, wherein two symmetrical sides of the support frame are respectively connected with a walking support frame in an adjusting way; the two symmetrical sides of the support frame are respectively provided with a horizontal adjusting support frame, the walking support frame comprises a connecting plate, two sides of the connecting plate are respectively provided with an adjusting connecting rod and a vertical support frame, each adjusting connecting rod is correspondingly inserted into the corresponding support frame, the first support rods are respectively connected in the vertical support frames in an adjusting way, and the lower side of each first support rod is respectively provided with a wheel assembly; one of the walking support frames is provided with a control frame, and the control frame is provided with a control assembly. The invention has the advantages that: the device is mainly used for construction of auxiliary facilities such as power cables, communication, PIS cables, fire-fighting ventilation pipes, evacuation platforms and the like of railways and subway tunnels, realizes trackless operation, adapts to operation under various construction working conditions, can walk on a plane, a rectangular surface and an arc-shaped surface, can pass through a platform and a fire door, and can hoist track panels and track plates.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to a trackless construction operation vehicle.
Background
In the present stage, each work type needs a specific construction frame for constructors during construction, and some work types, such as an evacuation platform, do not have a professional construction platform for use, so that a work platform suitable for various work types is needed for constructors in the present stage.
Disclosure of Invention
In order to solve the technical problems, the invention provides a trackless construction operation vehicle.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The trackless construction operation car, its characterized in that: comprises a supporting frame, wherein two symmetrical sides of the supporting frame are respectively connected with a walking supporting frame in an adjusting way;
The two symmetrical sides of the support frame are respectively provided with a horizontal adjusting support frame, the walking support frame comprises a connecting plate, two sides of the connecting plate are respectively provided with an adjusting connecting rod and a vertical support frame, each adjusting connecting rod is correspondingly inserted into the corresponding horizontal adjusting support frame, each vertical support frame is internally and respectively connected with a first support rod in an adjusting way, and the lower side of each first support rod is provided with a wheel assembly;
One of the walking support frames is provided with a control frame, and the control frame is provided with a control assembly.
Preferably, the support frame comprises a square frame, the square frame is fixedly connected with a support plate, first guardrails are respectively arranged at four corners of the square frame, the horizontal adjusting support frames are arranged on two sides of the square frame, two first oil cylinders are respectively arranged in each horizontal adjusting support frame, and each first oil cylinder is correspondingly driven to correspond to the corresponding adjusting connecting rod.
Preferably, the vertical support frame is of a tubular structure, a second oil cylinder is connected in the vertical support frame, and the second oil cylinder is in driving connection with the first support rod.
Preferably, the wheel assembly comprises a hinge seat hinged to the lower side of the first support rod, the hinge seat is connected with a wheel cover through a rotating shaft, a wheel is installed in the wheel cover, a motor for driving the wheel is installed on one side of the wheel cover, a third oil cylinder is connected between the first support rod and the hinge seat in a matched mode, and a fourth oil cylinder is connected between the hinge seat and the wheel cover in a matched mode.
Preferably, a pedal is hinged between the two vertical support frames of each walking support frame, and a fifth oil cylinder is arranged between the vertical support frames and the pedal.
Preferably, the two symmetrical sides of the support frame are respectively hinged with an extension frame, the extension frame comprises a connecting frame, a sixth oil cylinder is connected between the support frame and the extension frame, a folding frame is hinged on the connecting frame, a seventh oil cylinder is connected between the connecting frame and the folding frame, and a support rod assembly is arranged on the connecting frame.
Preferably, the support rod assembly comprises a sleeve, a second support rod is inserted into the sleeve, and the lower side of the second support rod is connected with the support seat through a ball head.
Preferably, the steering assembly comprises a steering device assembly, a control panel and a steering handle, wherein the steering device assembly is arranged on the steering frame, the steering device assembly is in driving connection with the wheel assembly, and the control panel and the steering handle are used for controlling the expansion and lifting of the walking support frame in a coordinated mode.
The beneficial effects of the invention are as follows:
1. The device is mainly used for construction of auxiliary facilities such as power cables, communication, PIS cables, fire-fighting ventilation pipes, evacuation platforms and the like of railways and subway tunnels, realizes trackless operation, adapts to operation under various construction working conditions, can walk on planes, rectangular surfaces and arc-shaped surfaces, can pass through platforms and fire doors, and can hoist track panels and track plates.
2. The device is convenient for constructors to get on or off the vehicle, the frame can change the track and the height of the frame, walking and construction under different working conditions are convenient, and the constructors can simultaneously perform cross construction in the tunnel.
3. Can be transported on the existing railway transportation line, meets the line maintenance requirement, changes the span under different working conditions, and meets the construction requirements of different sections and different spans of single lines.
4. The load distribution is reasonable, the four-wheel set is supported, the distribution is balanced, the hydraulic braking is reliable and stable, and the variable angle meets the requirements of plane construction and circular arc tunnel construction.
5. The device has good function expansibility, and can be optionally matched with various track plate lifting appliances, loose sleeper devices, tool rail clamps and other lifting tools.
Drawings
Fig. 1 is a schematic diagram of the basic structure of the present invention.
Fig. 2 is a schematic view of the extension frame in a folded state.
Fig. 3 is a schematic view of another folded state of the extension frame.
Fig. 4 is a schematic structural view of the support frame.
Fig. 5 is a schematic view of a connection state of the wheel assembly.
Fig. 6 is a driving schematic diagram of the wheel assembly.
Fig. 7 is a schematic structural view of a strut assembly.
Fig. 8 is a schematic view of the mounting of the handling frame and the handling assembly.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
As shown in fig. 1,2,3 and 4, the invention relates to a trackless construction operation vehicle, which comprises a support frame 1, wherein the support frame 1 comprises a square frame, a support plate is fixedly connected on the square frame, two symmetrical sides of the square frame are respectively welded with a horizontal adjustment support frame 3, and the two horizontal adjustment support frames 3 are horizontally arranged. The horizontal adjustment supporting frame 3 is a square through pipe, a partition plate is welded in the horizontal adjustment supporting frame 3, the partition plate divides the cavity of the horizontal adjustment supporting frame 3 into two independent cavities, two sides above each horizontal adjustment supporting frame 3 are welded with a first guardrail 54, the first guardrail 54 comprises four vertical rods welded on the horizontal adjustment supporting frame 3, and a cross rod is welded at the tops of the four vertical rods.
Two symmetrical sides of the support frame 1 are respectively connected with a walking support frame 2 in an adjusting way. The walking support frame 2 comprises a square connecting plate 4, an adjusting connecting rod 5 and a vertical supporting frame 6 are welded on two sides of the connecting plate 4, a second guardrail 55 is arranged on the outer side of the connecting plate 4, and the second guardrail 55 is arranged between the vertical supporting frames 6. The second guard rail 55 is a U-shaped frame comprising a set of uprights vertically welded to the connection plate 4, and a U-shaped bar welded to all the uprights. The adjusting connecting rods 5 are square rods, and each adjusting connecting rod 5 is correspondingly inserted into a cavity corresponding to the corresponding horizontal adjusting supporting frame 3. The cavity of each adjusting connecting rod 5 is internally connected with a first oil cylinder, which is not shown in the first oil cylinder drawing, and piston rods of the first oil cylinders in the two cavities of the same horizontal adjusting supporting frame 3 are arranged in opposite directions. Each first oil cylinder is correspondingly connected with a corresponding adjusting connecting rod 5 in a driving way.
Referring to fig. 5 and 6, the vertical support frames 6 are square pipes, each vertical support frame 6 is inserted with a first support rod 7, and the first support rods 7 are square pipes correspondingly matched with square cavities of the vertical support frames 6. A second oil cylinder 10 is connected between the first support rod 7 and the vertical support frame 6, the bottom of the second oil cylinder 10 is hinged in the vertical support frame 6, and a piston rod of the second oil cylinder 10 is connected in the vertical support frame 6 through a first hinge shaft 12. A square pedal 23 is connected between the two vertical support frames 6 through a hinge, and a fifth oil cylinder 24 is connected between each vertical support frame 6 and the pedal 23.
The lower side of the first support rod 7 is connected with the hinge seat 9 through a second hinge shaft 14. The articulated seat 9 comprises square blocks, two vertical plates 9.1 which are symmetrically arranged are arranged on one side of each square block, a second articulated shaft 14 is connected between the two vertical plates 9.1 through a bearing, mounting holes 9.2 are formed in the other side of each square block, and flanges 9.3 are arranged at the ends of the square blocks on the corresponding sides of the mounting holes 9.2. A third hinge shaft 13 is also connected between the two risers 9.1, and a third cylinder 11 is connected between the first hinge shaft 12 and the third hinge shaft 13. The wheel housing 15 is connected to the hinge base 9 via a rotary shaft, the rotary shaft and the fourth hinge shaft 19 are welded to the bottom of the wheel housing 15, the rotary shaft is inserted into the mounting hole 9.2, and the wheel housing 15 can rotate on the hinge base 9 via the rotary shaft. The third oil cylinder 11 is connected between the first supporting rod 7 and the hinging seat 9 in a matched mode, a fifth hinging shaft 20 is welded at the bottom of the first supporting rod 7, and the fourth oil cylinder 18 is connected between the fourth hinging shaft 19 and the fifth hinging shaft 20. The wheel house 15 is driven to rotate by the fourth cylinder 18. The wheel 16 is connected to the wheel house 15 via an axle, and a motor 17 for driving the wheel 16 is mounted on one side of the wheel house 15.
As shown in fig. 7, two extension frames 25 are hinged to two symmetrical sides of the support frame 1, and each extension frame 25 is connected to the corresponding horizontal adjustment support frame 3 through two hinge seats 36. The extension frame 25 comprises a connecting frame 26, the connecting frame 26 comprises a square frame, a supporting plate is welded on the square frame, a third guardrail 29 is welded on two sides of the square frame respectively, the third guardrail 29 comprises a group of upright posts welded on the square frame, and cross beams are connected between all the upright posts. A sixth oil cylinder 28 is connected between the support frame 1 and the extension frame 25, the sixth oil cylinder 28 is arranged at the lower side of the extension frame 25, the lower sides of the support frame 1 and the extension frame 25 are connected with an oil cylinder seat 37 through screws, and two ends of the sixth oil cylinder 28 are respectively connected with the corresponding oil cylinder seat 37.
The folding frame 27 is connected to the outer side of the extension frame 25 through two other hinge seats, the folding frame 27 comprises a square plate, and a U-shaped guardrail 30 is arranged on the outer side of the square plate. Two sides between the connecting frame 26 and the folding frame 27 are respectively connected with a seventh oil cylinder 32, the oil cylinder bottoms of the seventh oil cylinders 32 are connected to the square frame of the connecting frame 26, and the piston rod of each seventh oil cylinder 32 is hinged to the U-shaped guardrail 30.
A support bar assembly 31 is connected to each of the two sides of the underside of the connecting frame 26. The support rod assembly 31 comprises a square sleeve 34, a second support rod 35 is inserted into the sleeve 34, the second support rod 35 is also a square pipe, a first jack is arranged on the sleeve 34, a row of second jacks are arranged on the second support rod 35, a fixing shaft 38 is inserted between the first jack and the corresponding second jack, and the purpose of adjusting the length of the second support rod 35 is achieved by adjusting the corresponding relation between the first jack and the different second jacks. The lower side of the second support bar 35 is connected to a support base 42 via a ball 40. The ball head 40 comprises a ball body, a connecting rod 41 is arranged on one side of the ball body, a section of thread is arranged on the connecting rod 41, a fixing plate 39 is arranged at the bottom of the second supporting rod 35, and a screw hole connected with the connecting rod 41 is arranged on the fixing plate 39. The supporting seat 42 comprises a base, the base is a square plate, a spherical groove matched with the ball head 40 is formed in the base, two symmetrically arranged pressing plates 43 are connected to the upper side of the spherical groove through screws, and the two pressing plates 43 press and fix the ball head 40. A bottom plate 44 is provided at the bottom of the base.
As shown in fig. 8, a manipulation frame 21 is mounted on one of the vertical support frames 6, and a manipulation assembly 22 is mounted on the manipulation frame 21. The control assembly 22 comprises a pedal 48 fixedly connected to the control frame 21 through a connecting rod, a control table 50 is connected to the pedal 48 through a frame 49, a seat 52 is connected to the pedal 48 through a supporting frame 51, and the seat 52 is arranged on the front side of the control table 50. The steering device assembly 45 for driving and connecting the travelling wheels is arranged on the control console 50, the steering device assembly 45 comprises an open-core non-reaction steering device 45.1, and the open-core non-reaction steering device 45.1 is connected with a steering wheel through a rotating shaft. A control panel 46 and a control handle 47 for controlling the respective cylinders are further mounted on the console 50, and a display 53 is further mounted on the console 50. The combined action of the control panel 46 and the operating handle 47 controls the specific actions of the walking support frame 2 and the extension frame 25. The display 53 is used to display control data specific to the steering assembly 45, the control panel 46 and the steering handle 47. The specific structure and control manner of the control panel 46, the control handle 47 and the display screen 53 are all the prior art.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The trackless construction operation car, its characterized in that: comprises a supporting frame (1), wherein two symmetrical sides of the supporting frame (1) are respectively connected with a walking supporting frame (2) in an adjusting way;
Horizontal adjusting supporting frames (3) are arranged on two symmetrical sides of the supporting frame (1), the walking supporting frame (2) comprises a connecting plate (4), adjusting connecting rods (5) and vertical supporting frames (6) are arranged on two sides of the connecting plate (4), each adjusting connecting rod (5) is correspondingly inserted into the corresponding horizontal adjusting supporting frame (3), first supporting rods (7) are respectively connected in each vertical supporting frame (6) in an adjusting mode, and a wheel assembly (8) is arranged on the lower side of each first supporting rod (7);
A control frame (21) is arranged on one of the walking support frames (2), and a control assembly (22) is arranged on the control frame (21);
the support frame (1) comprises a square frame, support plates are fixedly connected to the square frame, first guardrails (54) are respectively arranged at four corners of the square frame, the horizontal adjusting support frames (3) are arranged on two sides of the square frame, two first oil cylinders are respectively arranged in each horizontal adjusting support frame (3), and each first oil cylinder correspondingly drives a corresponding adjusting connecting rod (5);
the vertical support frame (6) is of a tubular structure, a second oil cylinder (10) is connected in the vertical support frame (6), and the second oil cylinder (10) is in driving connection with the first support rod (7);
The wheel assembly (8) comprises a hinging seat (9) hinged to the lower side of the first supporting rod (7), a wheel cover (15) is connected to the hinging seat (9) through a rotating shaft, a wheel (16) is installed in the wheel cover (15), a motor (17) for driving the wheel (16) is installed on one side of the wheel cover (15), a third oil cylinder (11) is connected between the supporting rod (7) and the hinging seat (9) in a matched mode, and a fourth oil cylinder (18) is connected between the first hinging seat (9) and the wheel cover (15) in a matched mode;
a pedal (23) is hinged between the two vertical support frames (6) of each walking support frame (2), and a fifth oil cylinder (24) is arranged between the vertical support frames (6) and the pedal (23);
An extension frame (25) is hinged to the two symmetrical sides of the support frame (1), the extension frame (25) comprises a connecting frame (26), a sixth oil cylinder (28) is connected between the support frame (1) and the extension frame (25), a folding frame (27) is hinged to the connecting frame (26), a seventh oil cylinder (32) is connected between the connecting frame (26) and the folding frame (27), and a support rod assembly (31) is arranged on the connecting frame (26);
A partition plate is welded in the horizontal adjusting support frame (3), and the partition plate divides the cavity of the horizontal adjusting support frame (3) into two independent cavities;
The adjusting connecting rods (5) are square rods, and each adjusting connecting rod (5) is correspondingly inserted into a cavity corresponding to the corresponding horizontal adjusting supporting frame (3).
2. The trackless construction work vehicle according to claim 1, wherein: the support rod assembly (31) comprises a sleeve (34), a second support rod (35) is inserted into the sleeve (34), and the lower side of the second support rod (35) is connected with a support seat (42) through a ball head (40).
3. The trackless construction work vehicle according to claim 1, wherein: the steering assembly (22) comprises a steering device assembly (45), a control panel (46) and a steering handle (47) which are arranged on the steering frame (21), the steering device assembly (45) is in driving connection with the wheel assembly (8), and the control panel (46) and the steering handle (47) are used for controlling the expansion and lifting of the walking support frame (2) in a coordinated mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911218149.6A CN110778091B (en) | 2019-12-03 | 2019-12-03 | Trackless construction operation vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911218149.6A CN110778091B (en) | 2019-12-03 | 2019-12-03 | Trackless construction operation vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110778091A CN110778091A (en) | 2020-02-11 |
| CN110778091B true CN110778091B (en) | 2024-04-30 |
Family
ID=69393555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911218149.6A Active CN110778091B (en) | 2019-12-03 | 2019-12-03 | Trackless construction operation vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110778091B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207453859U (en) * | 2017-09-20 | 2018-06-05 | 中铁建电气化局集团第三工程有限公司 | A kind of constructing tunnel foldable lifting Operation Van |
| CN209635809U (en) * | 2019-03-13 | 2019-11-15 | 伍梦刚 | A kind of safety-type underground work hoistable platform |
| CN211817827U (en) * | 2019-12-03 | 2020-10-30 | 安徽兴宇轨道装备有限公司 | Trackless construction operation vehicle |
-
2019
- 2019-12-03 CN CN201911218149.6A patent/CN110778091B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207453859U (en) * | 2017-09-20 | 2018-06-05 | 中铁建电气化局集团第三工程有限公司 | A kind of constructing tunnel foldable lifting Operation Van |
| CN209635809U (en) * | 2019-03-13 | 2019-11-15 | 伍梦刚 | A kind of safety-type underground work hoistable platform |
| CN211817827U (en) * | 2019-12-03 | 2020-10-30 | 安徽兴宇轨道装备有限公司 | Trackless construction operation vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110778091A (en) | 2020-02-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106968179B (en) | A kind of constructing device that Cast-in-situ Beam is carried out using self-propelled entirety falsework method | |
| CN102070097B (en) | Free mobile gate seat tower crane | |
| CN109305178A (en) | A kind of manipulator upright bar flatcar | |
| CN201077720Y (en) | Tyre type doors hanging | |
| CN110761544B (en) | Frame for trackless construction operation vehicle | |
| CN110778091B (en) | Trackless construction operation vehicle | |
| CN201864496U (en) | Tower crane with freely moving gate seat | |
| CN211817827U (en) | Trackless construction operation vehicle | |
| CN101104499B (en) | Tyre gantry crane | |
| CN109798136A (en) | Tunnel support vehicle | |
| CN212176475U (en) | Frame for trackless construction operation vehicle | |
| JP2971042B2 (en) | Girder transporter and girder transport method | |
| JP7132774B2 (en) | mobile scaffolding | |
| CN211391510U (en) | Walking support of trackless construction operation vehicle | |
| CN110758596A (en) | Walking support of trackless construction operation vehicle | |
| CN113944112A (en) | Construction method for rebuilding and expanding bridge | |
| KR100377529B1 (en) | Working platform for bridge construction | |
| KR0160244B1 (en) | Working stand for both bridge construction and management | |
| KR100367028B1 (en) | A self propelled working platform for construction and maintenance of bridge | |
| JP2854741B2 (en) | Temporary bogie for body transportation | |
| CN212828415U (en) | Railway wagon body overhauling device | |
| JPS6116313Y2 (en) | ||
| JPH08105014A (en) | Movable carrier for maintenance and inspection of bridge | |
| CN217535242U (en) | Truss type portal crane for shipbuilding | |
| CN217440023U (en) | Translation trolley for oversized rectangular jacking pipe joints |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |