CN116641736A - Underground excavation construction supporting machine for subway - Google Patents
Underground excavation construction supporting machine for subway Download PDFInfo
- Publication number
- CN116641736A CN116641736A CN202310496160.9A CN202310496160A CN116641736A CN 116641736 A CN116641736 A CN 116641736A CN 202310496160 A CN202310496160 A CN 202310496160A CN 116641736 A CN116641736 A CN 116641736A
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- CN
- China
- Prior art keywords
- supporting
- plate
- plates
- carrying platform
- lifting assembly
- 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
- 238000010276 construction Methods 0.000 title claims abstract description 25
- 238000009412 basement excavation Methods 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 57
- 239000010959 steel Substances 0.000 claims abstract description 57
- 230000005540 biological transmission Effects 0.000 claims description 14
- 210000000078 claw Anatomy 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention is suitable for the field of engineering equipment, and provides a subway underground excavation construction support machine, which comprises a traction vehicle, wherein a loading platform is arranged on the traction vehicle, and the subway underground excavation construction support machine further comprises: the conveying assembly is arranged on the carrying platform, and is arranged along the length direction of the carrying platform, and a plurality of supporting steel frames are arranged on the conveying assembly along the length direction of the conveying assembly; the lifting assembly is arranged on one side of the carrying platform, is located at the tail of the traction vehicle and is arranged in the vertical direction, and the output end of the lifting assembly is two transverse forks arranged at intervals transversely, and the lifting assembly is arranged at intervals. The beneficial effects are as follows: the supporting machine not only can lift the supporting steel frame, but also can play a role in transportation, so that the operational space of a construction site is larger, and the construction is convenient.
Description
Technical Field
The invention belongs to the field of engineering equipment, and particularly relates to a subway underground excavation construction supporting machine.
Background
The subway is a rapid, large-traffic, electrically-towed rail traffic built in a city. The trains run on totally enclosed lines, and the lines in the central urban area are basically arranged in underground tunnels.
The subway is a main public transportation tool in a modern large city, along with development, subway lines are continuously increased and prolonged, the subway line is built and tunnels are built basically in the same mode, a regular channel is dug under the ground through special machinery, a supporting device is needed in the subway digging process, the supporting device can support the subway tunnels, the collapse risk is avoided, and the supporting machine is mechanical equipment for installing steel frames for supporting into the subway tunnels.
As is well known, the supporting structure of the subway tunnel is assembled by a plurality of identical arc steel frames, when the supporting construction is carried out, the arc steel frames are firstly required to be conveyed into the tunnel, then the arc steel frames are installed on a supporting machine, and the supporting machine is used for lifting the arc steel frames and then assisting manual assembly, so that various construction equipment such as a transportation vehicle, a supporting machine and the like are required in the process, the site space is crowded, and the supporting construction is inconvenient to develop.
Disclosure of Invention
The embodiment of the invention aims to provide a subway underground excavation construction supporting machine, which aims to solve the problems in the background technology.
The embodiment of the invention is realized in such a way that the subway underground excavation construction supporting machine comprises a traction vehicle, wherein the traction vehicle is provided with a carrying platform, and the subway underground excavation construction supporting machine further comprises:
the conveying assembly is arranged on the carrying platform, and is arranged along the length direction of the carrying platform, and a plurality of supporting steel frames are arranged on the conveying assembly along the length direction of the conveying assembly;
the lifting assembly is arranged on one side of the carrying platform, the lifting assembly is positioned at the tail of the traction vehicle and is arranged along the vertical direction, the output end of the lifting assembly is provided with two transverse forks which are transversely arranged at intervals, the transverse forks are arranged towards the conveying assembly, the conveying assembly is used for driving the support steel frame to transversely move so that the support steel frame falls onto the two transverse forks, and the lifting assembly is used for driving the support steel frame on the transverse forks to move along the vertical direction;
the lifting assembly is arranged on the carrying platform and is positioned on one side far away from the lifting assembly, the lifting assembly comprises a base fixedly connected to the carrying platform, a telescopic mechanical arm is arranged on the base, and a grabbing assembly is arranged at the other end of the telescopic mechanical arm.
Preferably, the conveying assembly comprises two supporting plates which are fixedly connected to the carrying platform at intervals, the supporting plates are arranged along the length direction of the carrying platform, a plurality of mounting rollers are rotatably arranged between the two supporting plates, a transmission chain is arranged on the mounting rollers in a matched mode, a plurality of pushing plates are fixedly arranged on the transmission chain at intervals, a supporting steel frame is located at the top of the supporting plates and located between the pushing plates, and two transverse forks in the lifting assembly are located between the supporting plates.
Preferably, the extension plates are fixedly connected to the two sides at one ends of the support plates, which are close to the lifting assembly, and the positioning stop blocks are fixedly connected to one sides of the tops of the extension plates, which are close to the lifting assembly, and one ends of the transverse forks, which are close to the conveying assembly, are positioned between the extension plates.
Preferably, a plurality of support rollers are rotatably arranged at the top of the support plate, the support rollers are arranged at intervals along the length direction of the support plate, and the support rollers are in contact with the support steel frame.
Preferably, both sides of the conveying assembly on the carrying platform are rotationally connected with a top plate, the top plate is contacted with both ends of the supporting steel frame, the top plate is arranged along the length direction of the carrying platform, a telescopic structure is arranged on the outer side of the top plate, and the telescopic structure is used for driving the top plate to rotate.
Preferably, the push plate comprises a first plate and a second plate, the first plate is fixedly connected to the transmission chain, the second plate is located at the top of the first plate, one side of the top of the first plate is fixedly connected with a limiting rod, the other side of the top of the first plate is rotationally connected with an adjusting screw rod, a sleeve hole and a threaded hole which are matched with the limiting rod and the adjusting screw rod respectively are formed in the second plate, and a handle used for driving the adjusting screw rod to rotate is arranged on one side, away from the first plate, of the second plate.
Preferably, the base comprises a chassis fixedly arranged on the carrying platform, an operation station is rotatably arranged on the chassis, and the telescopic mechanical arm is rotatably arranged on the operation station.
Preferably, snatch the subassembly including rotating the mounting bracket of connection in flexible arm one end, fixedly connected with opening jack catch on the mounting bracket, be provided with between mounting bracket and the flexible arm and be used for driving the pivoted extensible member of mounting bracket.
Preferably, the cross fork surface is provided with an anti-slip structure.
The subway underground excavation construction supporting machine provided by the embodiment of the invention has the beneficial effects that: (1) when the support frame is put into use, the conveying assembly can play a role in bearing the support steel frame, so that the support frame can play a role in conveying the support steel frame, and the support frame is integrated with the lifting assembly for lifting the support steel frame to the height, so that the original function is not lost, the support frame can be conveyed into a subway tunnel, and the support steel frame can be lifted;
(2) this support machine is through the cooperation of conveying component and lifting unit, can promote single support steelframe and remove highly to conveniently snatch the subassembly and fix, be different from conventional support machine, the support steelframe of conventional support machine needs to use suspension device to assist the installation, and this support machine self just can realize this operation, and in-service use is more convenient.
Drawings
Fig. 1 is a front view of a subway underground excavation construction supporting machine provided by an embodiment of the invention;
FIG. 2 is a cross-sectional block diagram of a conveyor assembly and a lift assembly provided in an embodiment of the present invention;
FIG. 3 is a side cross-sectional view of the structure of FIG. 2;
FIG. 4 is an enlarged view of a portion of FIG. 1 at A;
FIG. 5 is a perspective view of a push plate according to an embodiment of the present invention;
in the accompanying drawings: 1-towing a vehicle; 2-carrying platform; 3-a conveying assembly; 301-supporting a plate; 302-mounting rollers; 303-a drive chain; 304-pushing plate; 305-a second motor; 306-a transmission member; 4-supporting a steel frame; 5-a lifting assembly; 501-a cross fork; 502-support rails; 503-a cross frame; 504-a first motor; 505-screw; 6-lifting the component; 601-a base; 6011-chassis; 6012-operator station; 602-a telescopic mechanical arm; 603-a grasping assembly; 6031-mounting frame; 6032-open jaw; 6033-telescoping member; 7-an extension plate; 8-positioning a stop block; 9-supporting rollers; 10-top plate; 11-a telescopic structure; 12-a first plate; 13-a second plate; 14-a limit rod; 15-adjusting a screw rod; 16-handle.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
As shown in fig. 1, a structural diagram of a subway underground excavation construction supporting machine according to an embodiment of the present invention includes:
traction vehicle 1, traction vehicle 1 is last to set up year thing platform 2, still includes:
the conveying assembly 3, conveying assembly 3 set up on carrying platform 2, conveying assembly 3 sets up along carrying platform 2's length direction, conveying assembly 3 is last to be provided with a plurality of support steelframe 4 along self length direction.
The lifting assembly 5, lifting assembly 5 set up in one side of carrying platform 2, lifting assembly 5 is located the afterbody of traction vehicle 1, and lifting assembly 5 sets up along vertical direction, lifting assembly 5 output is two horizontal forks 501 that horizontal interval set up, and horizontal fork 501 sets up towards conveying assembly 3 side, conveying assembly 3 is used for driving support steelframe 4 lateral shifting for support steelframe 4 falls to two horizontal forks 501, lifting assembly 5 is used for driving support steelframe 4 on the horizontal fork 501 and removes along vertical direction.
The lifting assembly 6, the lifting assembly 6 is arranged on the carrying platform 2 and is located at one side far away from the lifting assembly 5, the lifting assembly 6 comprises a base 601 fixedly connected to the carrying platform 2, a telescopic mechanical arm 602 is arranged on the base 601, and a grabbing assembly 603 is arranged at the other end of the telescopic mechanical arm 602.
In one embodiment of the invention, when the support frame is put into use, the conveying component 3 can play a role of bearing the support steel frame 4, so that the support frame can play a role of conveying the support steel frame 4, and the support frame is integrated with the lifting component 6 for lifting the support steel frame 4 to the height, so that the original function is not lost, the support frame can convey the support steel frame 4 into a subway tunnel, and the support steel frame 4 can also be lifted; this support machine is through the cooperation of conveying component 3 and lifting means 5, can promote single support steelframe 4 and remove the height to conveniently snatch the subassembly 603 and fix, be different from conventional support machine, the support steelframe 4 of conventional support machine need be used to the auxiliary assembly of suspension device, and this support machine self just can realize this operation, and in-service use is more convenient.
In an example of the present invention, the base 601 includes a chassis 6011 fixedly disposed on the carrying platform 2, an operation station 6012 is rotatably disposed on the chassis 6011, the telescopic mechanical arm 602 is rotatably disposed on the operation station 6012, the operation station 6012 can control the operation station 6012 to rotate on the chassis 6011, so that the lifting assembly 6 can not only vertically lift the support steel frame 4, but also can lift the support steel frame 4 sideways, the operation is more flexible, as shown in fig. 4, the grabbing assembly 603 includes a mounting bracket 6031 rotatably connected to one end of the telescopic mechanical arm 602, an opening claw 6032 is fixedly connected to the mounting bracket 6031, a telescopic member 6033 for driving the mounting bracket 6031 to rotate is disposed between the mounting bracket 6031 and the telescopic mechanical arm 602, the telescopic member 6033 can adopt a hydraulic telescopic form, and can also adopt a telescopic form of a cylinder, and after the support steel frame 604 enters the opening claw 6032, the posture of the support steel frame 4 can be adjusted, so that the subsequent installation is facilitated; as shown in fig. 2, the lifting assembly 5 includes two supporting rails 502 fixedly connected to one side of the carrying platform 2, a cross frame 503 is slidably disposed between the supporting rails 502, a cross fork 501 is fixedly connected to the cross frame 503, a first motor 504 is disposed between the supporting rails 502, an output end of the first motor 504 is fixedly connected to a screw 505, the cross frame 503 is cooperatively connected with the screw 505, and the first motor 504 is used for driving the screw 505 to rotate, so that the cross frame 503 lifts; the surface of the transverse fork 501 is provided with an anti-slip structure, the anti-slip structure can adopt a rubber sleeve wrapped on the transverse fork 501, and a saw-tooth structure can be arranged on the surface of the transverse fork 501.
As shown in fig. 2 and 3, as a preferred embodiment of the present invention, the conveying assembly 3 includes two support plates 301 fixedly connected to the carrying platform 2 and arranged at intervals, the support plates 301 are arranged along the length direction of the carrying platform 2, a plurality of mounting rollers 302 are rotatably arranged between the two support plates 301, a transmission chain 303 is cooperatively arranged on the mounting rollers 302, a plurality of pushing plates 304 are fixedly arranged on the transmission chain 303 at intervals, a support steel frame 4 is located at the top of the support plates 301 and is located between the pushing plates 304, and two transverse forks 501 in the lifting assembly 5 are located between the support plates 301.
In one case of this embodiment, the outer side of the supporting plate 301 on the carrying platform 2 is fixedly connected with the second motor 305, the second motor 305 drives the installation roller 302 to rotate through the transmission member 306, the transmission member 306 can adopt a chain transmission mode, or a gear engagement transmission mode, after the installation roller 302 rotates, the push plate 304 can push the supporting steel frame 4 to transversely move, one end of the supporting plate 301, which is close to the lifting assembly 5, on both sides is fixedly connected with the extension plate 7, one side, which is close to the lifting assembly 5, of the top of the extension plate 7 is fixedly connected with the positioning stop block 8, one end, which is close to the conveying assembly 3, of the transverse fork 501 is positioned between the extension plates 7, and through the structure, the supporting steel frame 4 can transversely move right above the transverse fork 501, so that the transverse fork 501 can jack up the transverse fork 501 conveniently; as shown in fig. 3, the top of the supporting plate 301 is rotatably provided with a plurality of supporting rollers 9, the supporting rollers 9 are arranged at intervals along the length direction of the supporting plate 301, the supporting rollers 9 are in contact with the supporting steel frame 4, generally, the supporting steel frame 4 has a larger weight, and after the supporting rollers 9 are arranged, the pushing plate 304 is smoother when pushing the supporting steel frame 4 to move transversely.
As shown in fig. 3, as a preferred embodiment of the present invention, two sides of the conveying assembly 3 on the carrying platform 2 are rotatably connected with a top plate 10, the top plate 10 contacts with two ends of the supporting steel frame 4, the top plate 10 is disposed along the length direction of the carrying platform 2, a telescopic structure 11 is disposed outside the top plate 10, and the telescopic structure 11 is used for driving the top plate 10 to rotate.
In a case of this embodiment, before when loading the support steel frame 4, the support steel frame 4 is directly placed on the conveying component 3, when the traction vehicle 1 moves, the support steel frame 4 only depends on the push plate 304, and cannot reach the stabilizing device, and the condition that may shake may occur, and the top plate 10 is driven to deflect by the telescopic structure 11, and the top plate 10 can jack up the support steel frame 4 from both sides, so that the support steel frame 4 is separated from the conveying component 3, to achieve the purpose of fixing the support steel frame 4, and to facilitate transportation, the telescopic structure 11 may be in the form of a cylinder, and of course may also be in the form of an electric telescopic rod.
As shown in fig. 5, as a preferred embodiment of the present invention, the push plate 304 is composed of a first plate 12 and a second plate 13, the first plate 12 is fixedly connected to the transmission chain 303, the second plate 13 is located at the top of the first plate 12, one side of the top of the first plate 12 is fixedly connected with a stop lever 14, the other side is rotatably connected with an adjusting screw 15, a sleeve hole and a threaded hole respectively matched with the stop lever 14 and the adjusting screw 15 are formed in the second plate 13, and a handle 16 for driving the adjusting screw 15 to rotate is disposed on one side of the second plate 13 away from the first plate 12.
In one case of this embodiment, the supporting steel frames 4 used in different tunnels are generally different, that is, the radius of curvature of the supporting steel frames 4 is different, when the radius of curvature of the supporting steel frames 4 is larger, the pushing plate 304 can certainly contact with the supporting steel frames 4 so as to be capable of pushing the supporting steel frames 4 to move, and when the radius of curvature of the supporting steel frames 4 is smaller, the pushing plate 304 is not necessarily capable of contacting the supporting steel frames 4 because the top of the supporting steel frames 4 is arched to a larger extent, so that the structure is provided, the distance between the first plate 12 and the second plate 13 can be adjusted through the handle 16, so that the height of the pushing plate 304 can be adjusted, and thus the conveying assembly 3 can stably push the different supporting steel frames 4 to move laterally.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 devices 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. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (9)
1. The utility model provides a subway underground excavation construction supporting machine, includes traction vehicle, sets up the year thing platform on the traction vehicle, its characterized in that still includes:
the conveying assembly is arranged on the carrying platform, and is arranged along the length direction of the carrying platform, and a plurality of supporting steel frames are arranged on the conveying assembly along the length direction of the conveying assembly;
the lifting assembly is arranged on one side of the carrying platform, the lifting assembly is positioned at the tail of the traction vehicle and is arranged along the vertical direction, the output end of the lifting assembly is provided with two transverse forks which are transversely arranged at intervals, the transverse forks are arranged towards the conveying assembly, the conveying assembly is used for driving the support steel frame to transversely move so that the support steel frame falls onto the two transverse forks, and the lifting assembly is used for driving the support steel frame on the transverse forks to move along the vertical direction;
the lifting assembly is arranged on the carrying platform and is positioned on one side far away from the lifting assembly, the lifting assembly comprises a base fixedly connected to the carrying platform, a telescopic mechanical arm is arranged on the base, and a grabbing assembly is arranged at the other end of the telescopic mechanical arm.
2. The underground excavation construction supporting machine for the subway according to claim 1, wherein the conveying assembly comprises two supporting plates which are fixedly connected to the carrying platform at intervals, the supporting plates are arranged along the length direction of the carrying platform, a plurality of mounting rollers are rotatably arranged between the two supporting plates, a transmission chain is arranged on the mounting rollers in a matched mode, a plurality of pushing plates are fixedly arranged on the transmission chain at intervals, a supporting steel frame is located at the top of the supporting plates and between the pushing plates, and two transverse forks in the lifting assembly are located between the supporting plates.
3. The underground excavation construction supporting machine for the subway according to claim 2, wherein the two sides are fixedly connected with extension plates at one ends of the supporting plates, which are close to the lifting assembly, respectively, one sides of the tops of the extension plates, which are close to the lifting assembly, are fixedly connected with positioning stop blocks, and one ends of the transverse forks, which are close to the conveying assembly, are positioned between the extension plates.
4. The underground excavation construction supporting machine for the subway according to claim 2, wherein a plurality of supporting rollers are rotatably arranged at the top of the supporting plate, the supporting rollers are arranged at intervals along the length direction of the supporting plate, and the supporting rollers are in contact with the supporting steel frame.
5. The underground excavation construction supporting machine for the subway according to claim 2, wherein the two sides of the conveying assembly on the carrying platform are rotatably connected with top plates, the top plates are contacted with two ends of the supporting steel frame, the top plates are arranged along the length direction of the carrying platform, and telescopic structures are arranged on the outer sides of the top plates and used for driving the top plates to rotate.
6. The underground excavation construction supporting machine for the subway according to claim 2, wherein the pushing plate is composed of a first plate and a second plate, the first plate is fixedly connected to the transmission chain, the second plate is located at the top of the first plate, a limiting rod is fixedly connected to one side of the top of the first plate, an adjusting screw rod is rotatably connected to the other side of the top of the first plate, trepanning and threaded holes which are matched with the limiting rod and the adjusting screw rod respectively are formed in the second plate, and a handle for driving the adjusting screw rod to rotate is arranged on one side, away from the first plate, of the second plate.
7. The underground excavation construction supporting machine for the subway according to claim 1, wherein the base comprises a chassis fixedly arranged on the carrying platform, an operation station is rotatably arranged on the chassis, and the telescopic mechanical arm is rotatably arranged on the operation station.
8. The underground excavation construction supporting machine for the subway according to claim 1, wherein the grabbing component comprises a mounting frame rotatably connected to one end of the telescopic mechanical arm, an opening claw is fixedly connected to the mounting frame, and a telescopic piece for driving the mounting frame to rotate is arranged between the mounting frame and the telescopic mechanical arm.
9. The underground excavation construction supporting machine of a subway as claimed in claim 1, wherein the lateral fork surface is provided with an anti-slip structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310496160.9A CN116641736A (en) | 2023-05-05 | 2023-05-05 | Underground excavation construction supporting machine for subway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310496160.9A CN116641736A (en) | 2023-05-05 | 2023-05-05 | Underground excavation construction supporting machine for subway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116641736A true CN116641736A (en) | 2023-08-25 |
Family
ID=87642636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310496160.9A Pending CN116641736A (en) | 2023-05-05 | 2023-05-05 | Underground excavation construction supporting machine for subway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116641736A (en) |
-
2023
- 2023-05-05 CN CN202310496160.9A patent/CN116641736A/en active Pending
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