CN111719633A - Novel topological structure lightweight excavator tool box framework - Google Patents
Novel topological structure lightweight excavator tool box framework Download PDFInfo
- Publication number
- CN111719633A CN111719633A CN202010608061.1A CN202010608061A CN111719633A CN 111719633 A CN111719633 A CN 111719633A CN 202010608061 A CN202010608061 A CN 202010608061A CN 111719633 A CN111719633 A CN 111719633A
- Authority
- CN
- China
- Prior art keywords
- cover plate
- support frame
- supporting frame
- connecting block
- excavator
- 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
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
- E02F9/0883—Tanks, e.g. oil tank, urea tank, fuel tank
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
- E02F9/0891—Lids or bonnets or doors or details thereof
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention relates to a novel topological structure light excavator tool box framework. The upper cover plate, the front shroud, the back shroud, a left side apron, right side apron and excavator platform constitute and seal the box, the front shroud sets up the offside at the back shroud, left side apron and right side apron set up the both sides at the back shroud respectively, the left branch strut, well support frame and right branch strut parallel arrangement, the upper cover plate sets up at the left branch strut, well support frame and right branch strut, set up the mounting hole on left branch strut and the right branch strut, the slide bar passes through the mounting hole and is connected with left branch strut and right branch strut, the back support muscle sets up on the back support frame, the back shroud sets up on the back support frame, left side connecting block and right connecting block set up on the back support frame, left side connecting block and right connecting. Can improve toolbox structural stability through above-mentioned structural design.
Description
Technical Field
The invention relates to the field of excavator tool box framework design, in particular to a novel topological structure light-weight excavator tool box framework.
Background
The excavator is an important engineering machine and has multiple functions of bulldozing and transporting materials, the excavator is generally divided into three parts from the longitudinal angle, the first part is used for getting off the vehicle and mainly used for walking, and the excavator crosses a groove; the second part is a platform and a connecting piece, and connects the crawler belt part at the lower part with the covering part at the upper part to realize the bearing of the covering part; the third part is the covering, and different covering effects are different, and engine, main pump are sealed to the main pump room, and the driver's cabin provides whole car direction position control, and the toolbox holds the car light, also is the important step of watching a lookout of a height. Present toolbox is mostly the thin wall spare, design for bilateral symmetry structure usually for the atress inequality in order to prevent the vibration process, but because excavator operating condition is comparatively abominable, different with ordinary car, especially when field or building site work, road surface unevenness is great, the toolbox is located the left front end of the vertical axis of excavator usually, advance or the operation in-process because transverse span makes toolbox both sides atress different, produce the unilateral bending effect to the connecting piece in the middle of, the production and the stretching of aggravation crackle, on the other hand, toolbox rear side bounding wall is quadrilateral structure, rock in and unstable about.
Disclosure of Invention
The invention aims to provide a novel topological structure light excavator tool box framework, which can improve the structural stability of a tool box.
In order to achieve the purpose, the invention provides the following scheme:
a novel topological structure lightweight excavator toolbox skeleton includes: the supporting frame comprises a left supporting frame, a middle supporting frame, a right supporting frame and a rear supporting frame, the cover plate comprises an upper cover plate, a front cover plate, a rear cover plate, a left cover plate and a right cover plate, the connecting block comprises a left connecting block and a right connecting block, the sliding rod comprises a left sliding rod and a right sliding rod, the upper cover plate, the front cover plate, the rear cover plate, the left cover plate, the right cover plate and the excavator platform form a closed box body, the front cover plate is arranged on the opposite side of the rear cover plate, the left cover plate and the right cover plate are respectively arranged on the two sides of the rear cover plate, the left supporting frame, the middle supporting frame and the right supporting frame are arranged in parallel, the upper cover plate is arranged on the left supporting frame, the middle supporting frame and the right supporting frame, mounting holes are formed in the left supporting frame and the right supporting frame, the left side slide bar passes through the mounting hole with the left branch strut is connected, the right side slide bar passes through the mounting hole with the right branch strut is connected, back support muscle sets up on the back support frame, the back shroud sets up on the back support frame, a left side connecting block with the right side connecting block is used for connecting the back support frame with the upper cover plate.
Optionally, the upper cover plate is provided with a convex-concave pattern.
Optionally, the left sliding rod is connected with the left support frame through a bolt, the left sliding rod is connected with the left connecting block through a bolt, and the left connecting block is connected with the rear support frame through welding.
Optionally, the rear support frame includes a first support edge, a second support edge and a third support edge, the first support edge and the third support edge are disposed opposite to each other, and the first support edge and the third support edge are widened to prevent stress concentration at the lower end of the rear support frame.
Optionally, the rear support frame is of a quadrilateral structure and has an opening at the lower end, the rear support ribs are of a trilateral structure and have an opening at the lower end, the rear support frame and the rear support ribs are connected in a three-point welding mode, and the welding positions of the rear support frame and the rear support ribs are respectively at the lower point of the first support edge, the middle point of the second support edge and the lower point of the third support edge.
Optionally, a connecting hole is formed in the right cover plate and used for installing a car lamp.
Optionally, the left support frame, the middle support frame and the right support frame are all bent beams.
Optionally, the front cover plate and the left cover plate are connected by welding, and the front cover plate and the right cover plate are connected by welding.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a novel topological structure lightweight excavator tool box framework, which overcomes adverse effects caused by bearing or unbalanced vibration to a certain extent through the matching of a rear support frame and a rear support rib, and forms a relatively stable frame structure; the unique design of the upper cover plate and the combination of the supporting frame improve the base frequency of the cover plate, so that the cover plate has better vibration characteristics. Through the design, the tool box can ensure the functions of the tool box and enhance the structural stability of the tool box.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic view of the framework of the novel topological structure lightweight excavator tool box of the present invention;
FIG. 2 is a left side view of the novel topological structure light weight excavator tool box framework of the present invention;
FIG. 3 is a rear view of the novel topological structure light weight excavator tool box framework of the present invention;
FIG. 4 is an enlarged view of a portion of the rear support frame of the present invention;
description of the symbols: 1-left support frame, 2-right support frame, 3-middle support frame, 4-left slide bar, 5-right slide bar, 6-left connecting block, 7-right connecting block, 8-back support frame, 9-back support rib, 10-upper cover plate, 11-front cover plate, 12-left cover plate, 13-right cover plate, 14-back cover plate, 15-back cushion plate, 16-thickened plate and 17-front cushion plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The excavator can realize the transportation of material and the loading and unloading of earthwork, is one of the most main engineering machinery in engineering construction, and the excavator toolbox can load important instruments such as car lights, spanners and the like, and provides good night operation illumination and field maintenance guarantee for the excavator. The toolbox needs to bear weight, plays the role of a ladder for people to ascend when observation is needed, and is often a fault-height-emitting component due to the fact that the working conditions of the excavator are complex and changeable, the environment is severe, and the stress of the toolbox is complex. Conventional toolbox mainly comprises four bounding walls and a apron, can simply realize the closure and the bearing in space, because the excavator does not have suspension system, and the toolbox is in under frequent vibration and the abominable impact condition, permanent deformation appears more easily, welding seam fracture and fatigue fracture, and current toolbox has not fine solution above-mentioned problem yet, brings not good use experience for the user.
The method for solving the fault of the traditional tool box is to thicken the place with the problem and improve the welding requirement. Although the above measures can solve most problems, the weight of the tool box is increased, and the welding cost is increased. Due to the increased weight, new failure points may occur elsewhere.
The invention adopts the topological optimization function of CAE software, takes the reduction of vibration energy as an optimization target under the given weight, optimizes the traditional U-shaped opening structure into a network formed by a plurality of triangular frames, improves the welding process and reduces the requirement on the welding strength by locally increasing closed frames and dispersing welding seams. The topological structure of the novel tool box designed by the method can be popularized to other vehicle types and other covering structural members, the weight and the cost are reduced, and the reliability is improved.
A novel topological structure lightweight excavator toolbox skeleton includes: the novel topological structure light weight excavator tool box comprises a support frame, a sliding rod, a connecting block, a rear supporting rib and a cover plate, wherein the support frame comprises a left support frame, a middle support frame, a right support frame and a rear support frame, the cover plate comprises an upper cover plate, a front cover plate, a rear cover plate, a left cover plate and a right cover plate, the connecting block comprises a left connecting block and a right connecting block, and fig. 1 is a schematic diagram of the novel topological structure light weight excavator tool box framework. Fig. 2 is a left side view of the framework of the novel topological structure lightweight excavator tool box of the present invention. Fig. 3 is a rear view of the novel topological structure lightweight excavator tool box framework of the present invention. Fig. 4 is a partial enlarged view of the rear support frame of the present invention. As shown in fig. 1 to 4, the novel topological structure lightweight excavator tool box framework specifically includes: left branch strut 1, right branch strut 2, well support frame 3, left slide bar 4, right slide bar 5, left connecting block 6, right connecting block 7, back support frame 8, back supporting rib 9, upper cover plate 10, front shroud 11, left side apron 12, right side apron 13 and back shroud 14, the toolbox that is formed by this skeleton has stably, and the characteristics that structural strength is high compare in the welding of traditional ordinary sheet metal spare and have the advantage that the life-span is longer, use is safer. The upper cover plate 10, the front cover plate 11, the rear cover plate 14, the left cover plate 12, the right cover plate 13 and the excavator platform form a closed box body, the excavator platform here is equivalent to the lower cover plate position that provides the closed box, front shroud 11 sets up the offside at back shroud 14, left side apron 12 and right side apron 13 set up the both sides at back shroud 14 respectively, left side support frame 1, well support frame 3 and the 2 parallel arrangement of right branch strut, upper cover plate 10 sets up at left side support frame 1, well support frame 3 and right branch strut 2 are last, set up the mounting hole on left side support frame 1 and the right branch strut 2, left side slide bar 4 passes through the mounting hole and is connected with left support frame 1, right side slide bar 5 passes through the mounting hole and is connected with right branch strut 2, back support muscle 9 sets up on the back support frame, back shroud 14 sets up on the back support frame, left side connecting block 6 and right connecting block 7 set up on the back support frame, left side connecting block 6 and right connecting block 7 are.
The left sliding rod 4, the right sliding rod 5, the left connecting block 6 and the right connecting block 7 are mainly used for connecting the upper cover plate 10 and the rear supporting frame 8, and the normal opening and closing of the tool box are realized through the expansion of the sliding rods and the positioning of the buckles. The left slide bar 4 is connected with the left support frame 1 through a bolt, the left slide bar 4 is connected with the left connecting block 6 through a bolt, and the left connecting block 6 is connected with the rear support frame 8 through welding. The same is true of the right side.
The rear support frame 8 can bear part of the weight of the upper cover plate 10, and is connected with the rear cover plate 14, the left cover plate 12 and the right cover plate 13, so that the tool box has good integrity, the excavator can generate small deformation in the left and right unbalanced vibration process generated by excitation from different sources, and the integral connectivity formed by the rear support frame 8 can prevent the vibration from generating deformation accumulation on the left and right sides. The rear support frame 8 comprises a first support edge, a second support edge and a third support edge, the first support edge and the third support edge are arranged oppositely, the first support edge and the third support edge are widened, and stress concentration of the lower end of the rear support frame 8 is prevented. Back support frame 8 is quadrangle structure and lower extreme opening, and back supporting rib 9 is trilateral structure and lower extreme opening, nevertheless because back support frame 8 is quadrangle structure and lower extreme opening, also takes place to warp very easily under the effect of unbalanced load, arouses the department stress concentration of bending, and then supporting rib 9 can realize the stability of triangle structure, has also removed the thickening at stress concentration position from simultaneously. The connection mode of the rear support frame 8 and the rear support rib 9 is three-point welding, and the welding positions are respectively at the lower point of the first support edge, the middle point of the second support edge and the lower point of the third support edge. The rear support frame 8 is a concave beam, has good vibration characteristics and high strength, and can disperse welding spots during connection.
The connection mode of the rear cover plate 14 and the rear support frame 8 is welding, and the main function is to seal the tool box structure.
And a connecting hole is formed in the right cover plate 13 and used for installing a car lamp. Front shroud 11 and left shroud 12 connected mode are the welding, adopt the mode of line welding to make to connect more inseparabler, and be the line welding with right shroud 13 connected mode, and front shroud 11 lower right department provides certain gap, and the effect shines for making things convenient for car light, works and travel at night for the excavator and provides the illumination, and front shroud 11 bears the quality great for the installation department of upper cover plate 10 hasp, consequently designs the plate structure of bending around for, has higher fundamental frequency also to have better vibration characteristic. It follows that a stable toolbox structure is important for the excavator to work properly. The contact position of the left cover plate 12 and the upper cover plate 10 is processed and bent, a sealant strip can be added, on one hand, the left cover plate can be better matched with the upper cover plate 10, on the other hand, the sealant strip can be added on the basis, and the right cover plate 13 and the front cover plate 11 are also processed and bent at the contact position.
The reasonable structural framework can bear the weight of falling rocks and people and prevent the stress concentration caused by long-term vibration from generating crack propagation.
The novel topological structure lightweight excavator tool box framework further comprises a front base plate 17, a rear base plate 15 and a thickened plate 16, wherein the front base plate 17 provides further connection for the front cover plate 11, the left cover plate 12 and the right cover plate 13, and the integrity of the front part is enhanced; the rear cushion plate 15 provides support thickening; the thickened plate 16 makes the joint thicker as a whole.
This toolbox is when the front end atress, if the people stand look from a distance or look round, have the rock fall down, three group's support frame left branch strut 1 in the place ahead, right branch strut 2, well support frame 3 can prevent to cover the damage of piece, with rear support frame 8 at rear portion, moment of flexure can be born to rear support muscle 9, when receiving unbalanced effort in both sides, also has better stability.
The whole tool box in the front-back direction is equivalent to a cantilever beam, and the fixed end positions are the positions of a rear supporting frame 8 and a rear supporting rib 9.
Bending moment formula: fa ═ M
Where M is the bending moment, F is the load weight, and a is the vertical distance.
The invention can ensure the function of the tool box, can strengthen the structural stability of the tool box, and prevents the tool box from generating stress concentration due to frequent bending and twisting in the vibration process, on one hand, the front side is provided with bends and different patterns at the cover plate to increase the rigidity of the tool box, on the other hand, the rear side is provided with an integral triangular support, thereby overcoming the adverse effect generated by bearing or unbalanced vibration to a certain extent and forming a more stable frame structure.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are presented solely to aid in the understanding of the apparatus and its core concepts; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.
Claims (8)
1. The utility model provides a novel topological structure lightweight excavator toolbox skeleton which characterized in that includes: the supporting frame comprises a left supporting frame, a middle supporting frame, a right supporting frame and a rear supporting frame, the cover plate comprises an upper cover plate, a front cover plate, a rear cover plate, a left cover plate and a right cover plate, the connecting block comprises a left connecting block and a right connecting block, the sliding rod comprises a left sliding rod and a right sliding rod, the upper cover plate, the front cover plate, the rear cover plate, the left cover plate, the right cover plate and the excavator platform form a closed box body, the front cover plate is arranged on the opposite side of the rear cover plate, the left cover plate and the right cover plate are respectively arranged on the two sides of the rear cover plate, the left supporting frame, the middle supporting frame and the right supporting frame are arranged in parallel, the upper cover plate is arranged on the left supporting frame, the middle supporting frame and the right supporting frame, mounting holes are formed in the left supporting frame and the right supporting frame, the left side slide bar passes through the mounting hole with the left branch strut is connected, the right side slide bar passes through the mounting hole with the right branch strut is connected, back support muscle sets up on the back support frame, the back shroud sets up on the back support frame, a left side connecting block with the right side connecting block is used for connecting the back support frame with the upper cover plate.
2. The novel topologically lightweight excavator kit skeleton of claim 1, wherein the upper cover plate is embossed.
3. The novel topological structure lightweight excavator tool box framework of claim 1, wherein the left sliding rod is connected with the left support frame through a bolt, the left sliding rod is connected with the left connecting block through a bolt, and the left connecting block is connected with the rear support frame through welding.
4. The novel topological light weight excavator toolbox skeleton of claim 1, wherein the back support frame comprises a first support edge, a second support edge and a third support edge, the first support edge and the third support edge are oppositely arranged, and the first support edge and the third support edge are widened to prevent stress concentration at the lower end of the back support frame.
5. The novel topological light weight excavator toolbox skeleton of claim 4, wherein the back support frame is quadrilateral and open at the lower end, the back support rib is trilateral and open at the lower end, the back support frame and the back support rib are connected by three-point welding at a point below the first support edge, a midpoint of the second support edge and a point below the third support edge.
6. The novel topological structure lightweight excavator toolbox skeleton of claim 1, wherein the right cover plate is provided with a connecting hole, and the connecting hole is used for installing a car lamp.
7. The novel topological light weight excavator toolbox skeleton of claim 1, wherein the left support frame, the middle support frame and the right support frame are all bent beams.
8. The novel topological structure lightweight excavator toolbox skeleton of claim 1, wherein the front cover plate and the left cover plate are connected by welding, and the front cover plate and the right cover plate are connected by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010608061.1A CN111719633A (en) | 2020-06-29 | 2020-06-29 | Novel topological structure lightweight excavator tool box framework |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010608061.1A CN111719633A (en) | 2020-06-29 | 2020-06-29 | Novel topological structure lightweight excavator tool box framework |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111719633A true CN111719633A (en) | 2020-09-29 |
Family
ID=72571522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010608061.1A Pending CN111719633A (en) | 2020-06-29 | 2020-06-29 | Novel topological structure lightweight excavator tool box framework |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111719633A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006036129A (en) * | 2004-07-29 | 2006-02-09 | Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd | Step device of construction machine |
| KR20140080858A (en) * | 2012-12-20 | 2014-07-01 | 볼보 컨스트럭션 이큅먼트 에이비 | Installation structure of urea tank for construction machine |
| JP2015135000A (en) * | 2014-01-17 | 2015-07-27 | コベルコ建機株式会社 | Tool box of construction machine |
| CN205915313U (en) * | 2016-08-09 | 2017-02-01 | 山东临工工程机械有限公司 | Excavator toolbox |
| CN209252037U (en) * | 2018-03-19 | 2019-08-16 | 陈兴光 | A kind of integrated molding metal cupboard |
| CN210031956U (en) * | 2019-05-24 | 2020-02-07 | 上海三一重机股份有限公司 | Excavator toolbox and excavator |
-
2020
- 2020-06-29 CN CN202010608061.1A patent/CN111719633A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006036129A (en) * | 2004-07-29 | 2006-02-09 | Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd | Step device of construction machine |
| KR20140080858A (en) * | 2012-12-20 | 2014-07-01 | 볼보 컨스트럭션 이큅먼트 에이비 | Installation structure of urea tank for construction machine |
| JP2015135000A (en) * | 2014-01-17 | 2015-07-27 | コベルコ建機株式会社 | Tool box of construction machine |
| CN205915313U (en) * | 2016-08-09 | 2017-02-01 | 山东临工工程机械有限公司 | Excavator toolbox |
| CN209252037U (en) * | 2018-03-19 | 2019-08-16 | 陈兴光 | A kind of integrated molding metal cupboard |
| CN210031956U (en) * | 2019-05-24 | 2020-02-07 | 上海三一重机股份有限公司 | Excavator toolbox and excavator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201143722Y (en) | Hydraulic integral detachable box girder steel outer mold | |
| CN106988281B (en) | Manufacturing method and structure of high-narrow large-hole-opening main longitudinal beam down-the-hole arc door | |
| CN110043077A (en) | A kind of steel-structure factory building adapting to topography | |
| CN111719633A (en) | Novel topological structure lightweight excavator tool box framework | |
| CN106592864B (en) | A kind of steel structural roof beam string segmentation installation method | |
| CN209873592U (en) | Lifting type movable auxiliary tool for installing variable-section cantilever on steel box girder | |
| CN210886955U (en) | Detachable combined jig frame used on flat steel box girder | |
| CN214648642U (en) | Engineering machine tool longeron structure and engineering machine tool | |
| CN214647567U (en) | Single-beam supporting frame of liquefied natural gas cylinder for vehicle | |
| CN211194330U (en) | Quadrilateral support for prefabricated side formwork of segmental box girder | |
| CN204802867U (en) | Cross section is gantry crane girder of triangle -shaped structure | |
| CN210530862U (en) | Tunnel construction trolley | |
| CN207812273U (en) | A kind of sky iron track girder pillarwork | |
| CN205153124U (en) | Steel construction building bearing axle | |
| CN111597662B (en) | Topological structure lightweight excavator toolbox design method and system | |
| CN213741634U (en) | External connection type connecting node structure for connecting steel beam and concrete column | |
| CN216664268U (en) | Excavator accessory structure base | |
| CN213569189U (en) | Rail passing device | |
| CN221029641U (en) | High key Shi Ningping platform of suspension bridge combination beam | |
| CN104290823A (en) | Passenger vehicle body structure | |
| CN215043107U (en) | Cabin body supporting device and chassis of off-road vehicle | |
| CN216034228U (en) | Side protection connecting structure | |
| CN212052373U (en) | Symmetrical cantilever of cradle | |
| CN212577881U (en) | A welding auxiliary fixtures for steel case roof beam | |
| CN108316129A (en) | A kind of sky iron track girder pillarwork |
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 |