CN220886959U - Quick movable pushing rectangular machine installer for underground space - Google Patents
Quick movable pushing rectangular machine installer for underground space Download PDFInfo
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- CN220886959U CN220886959U CN202322761070.6U CN202322761070U CN220886959U CN 220886959 U CN220886959 U CN 220886959U CN 202322761070 U CN202322761070 U CN 202322761070U CN 220886959 U CN220886959 U CN 220886959U
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- push rod
- hydraulic push
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 230000009193 crawling Effects 0.000 claims description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 239000007769 metal material Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 21
- 230000008569 process Effects 0.000 abstract description 11
- 238000005096 rolling process Methods 0.000 abstract description 5
- 230000000149 penetrating effect Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 description 4
- 230000008093 supporting effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model discloses an installer of a quick-moving pushing rectangular machine in an underground space, which comprises a guide rail, wherein a hanging hole is formed in the surface of the guide rail in a penetrating manner, an installer body is arranged on the surface of the guide rail in a lap joint manner, a main top hydraulic push rod is fixedly arranged in the installer body, L-shaped plates are fixedly arranged on the front side and the rear side of the installer body, a limiting hole is formed in the surface of the L-shaped plate in a penetrating manner, and a pulling assembly is arranged in the installer body. The L-shaped plate is used for limiting the installer body through the plug pin type limiting assembly, the rectangular machine is pushed to move until the stroke of the main top hydraulic push rod is completed by the main top hydraulic push rod, the aim of facilitating movement of the rectangular machine is achieved, the situation that a relay mode needs to be welded and installed to make a disassembly and assembly method complicated is avoided, and the situations that the risk coefficient of a traction process in a winch traction system mode is high, and balance operation and high cost of the rectangular machine on rolling steel must be kept are avoided.
Description
Technical Field
The utility model relates to the technical field of rectangular machine movement, in particular to an installer for pushing a rectangular machine by rapidly moving in an underground space.
Background
The installer for the ultra-large tonnage rectangular machine is mainly applied to translational motion of a pipe jacking machine and a shield machine in the underground tunneling process, and two pushing modes commonly adopted in China at present are as follows: one is a relay method: the method has the defects of longest service time, mature process, need of welding a top iron platform for supporting, complex process, high risk coefficient, high cost, material waste and the like, and has low pushing efficiency and is not ideal. The process is difficult to disassemble and difficult to implement, so that the process is difficult to popularize and apply. Its advantages are low rigidity, easy dismounting after a jacking stroke, and high cost. The traction system mode is characterized in that the positions of two windlass are fixed in advance, 2 custom-made lifting lugs are welded on the traction surface of the rectangular machine, the traction surface is fixed through a traction rope, and custom-made rolling steel is required to be installed on the rectangular machine before translation, so that the whole pipe jacking machine moves laterally on the rolling steel. The requirements of design strength, rigidity, stability, precision and the like must be met. The traction process has the defects of high risk coefficient, necessity of keeping the rectangular machine running on the rolled steel in a balanced way, high cost and the like, so that the installer for pushing the rectangular machine by rapidly moving in the underground space is provided.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model provides a quick-moving pushing rectangular machine installer for an underground space, which is used for solving the problems in the prior art.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The utility model provides a swift removal of underground space pushes away rectangular machine erector, includes the guide rail, the guide rail surface runs through and is provided with the hanging hole, guide rail surface overlap joint is provided with the erector main part, the inside fixed main top hydraulic push rod that is provided with of erector main part, the front and back both sides of erector main part are all fixed to be provided with the L template, L template surface runs through and is provided with spacing hole, the inside pulling subassembly that is provided with of erector main part, the front side of L template is provided with the spacing subassembly of bolt, erector main part left and right sides all is provided with over-and-under type and removes the subassembly.
Preferably, the pulling assembly comprises a fixing plate inside the installer body, the opposite surfaces of the fixing plate are fixedly provided with a mounting plate, a first connecting plate is fixedly arranged between the opposite surfaces of the mounting plate through bolts, a crawling hydraulic push rod is fixedly arranged on the left side of the first connecting plate, a pull rope is fixedly arranged at the output end of the crawling hydraulic push rod, a hook is fixedly arranged at the left end of the pull rope, and the hook is slidably connected with the hanging hole.
Preferably, the pin type limiting assembly comprises a limiting plate arranged on the front side of the L-shaped plate on the front side, a second connecting plate is fixedly arranged between opposite surfaces of the limiting plate through bolts, a pin type hydraulic push rod is fixedly arranged on the front side of the second connecting plate, a movable plate is fixedly arranged at the output end of the pin type hydraulic push rod, a movable column is fixedly arranged on the rear side of the movable plate, a limiting circular plate is fixedly arranged at the rear end of the movable column, a pin column is fixedly arranged on the rear side of the limiting circular plate, and the pin column is slidably connected with the limiting hole.
Preferably, the lifting moving assembly comprises rectangular plates arranged on the left side and the right side of the installer body, a hand-operated jack is fixedly arranged at the bottom of the rectangular plates, steel wheels are fixedly arranged at the bottom of the hand-operated jack, reinforcing plates are fixedly arranged at the tops of the rectangular plates, and the reinforcing plates are fixedly connected with the installer body.
Preferably, the number of the bolt posts is five, the five bolt posts are distributed in a linear array, and the bolt posts are made of metal materials.
Preferably, the number of the bolt hydraulic pushing rods is two, and the two bolt hydraulic pushing rods are symmetrically distributed.
Preferably, the fixed hangers that is provided with in installer main part top, the quantity of hangers is four and all is located the top of installer main part, the hangers adopts the metal material to make.
Compared with the prior art, the utility model has the beneficial effects that: the underground space rapidly moves to push the rectangular machine installer, external hoisting equipment places the installer main body on a guide rail through hanging lugs, so that a steel wheel is in contact with the top of the guide rail, a bolt hydraulic push rod is pushed to be inserted into the guide rail through a moving plate, a moving column and a limiting circular plate, a main jack hydraulic push rod drives an output end to push the rectangular machine to move until the stroke of the main jack hydraulic push rod is completed, a shaking type jack is rocked, so that the installer main body is separated from the guide rail, the output end of the main jack hydraulic push rod is retracted, a crawling hydraulic push rod drives the output end to extend, a hook is inserted into a hanging hole, the bolt hydraulic push rod, the moving plate, the moving column and the limiting circular plate drive the bolt column to slide out of the guide rail, the installer main body is pulled to move through the steel wheel, the supporting effect of the hand type jack on the rectangular plate and the installer main body is relieved when the output end of the main jack hydraulic push rod is in contact with the rectangular machine, the L-shaped plate is limited by a limit component, and the main jack hydraulic push rod is driven to move until the stroke of the main jack hydraulic push rod is completed; the method has the advantages that the aim of facilitating movement of the rectangular machine is achieved, the situation that the relay mode needs to be welded and installed to make the disassembly and assembly method complex is avoided, and the situations that the risk coefficient of the traction process is high, the rectangular machine must be kept to run on steel rolling in a balanced mode and the cost is high in the winch traction system mode are avoided.
Drawings
FIG. 1 is an isometric view of a structure of the present utility model;
FIG. 2 is a front cross-sectional view of the structure of the present utility model;
FIG. 3 is a schematic view of a partial structure of the present utility model;
FIG. 4 is a schematic view of a structural pull assembly of the present utility model;
FIG. 5 is a schematic view of a latch-type spacing assembly according to the present utility model;
Fig. 6 is a schematic structural diagram of a lifting type moving assembly according to the present utility model.
In the figure: 1. a guide rail; 2. a hanging hole; 3. a mounter body; 4. an L-shaped plate; 5. a limiting hole; 6. a fixing plate; 7. a mounting plate; 8. a first connecting plate; 9. a crawling hydraulic push rod; 10. a pull rope; 11. a hook; 12. a limiting plate; 13. a second connecting plate; 14. a hydraulic push rod of a bolt; 15. a moving plate; 16. a moving column; 17. a limit circular plate; 18. a latch post; 19. a rectangular plate; 20. hand-operated jack; 21. a steel wheel; 22. a reinforcing plate; 23. hanging lugs; 24. and a main top hydraulic push rod.
Detailed Description
The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-6, an underground space quick-moving pushing rectangular machine installer comprises a guide rail 1, a hanging hole 2 is arranged on the surface of the guide rail 1 in a penetrating way, an installer body 3 is arranged on the surface lap joint way of the guide rail 1, a main top hydraulic push rod 24 is fixedly arranged inside the installer body 3, L-shaped plates 4 are fixedly arranged on the front side and the rear side of the installer body 3, a limiting hole 5 is arranged on the surface of the L-shaped plates 4 in a penetrating way, a pulling component is arranged inside the installer body 3, a plug pin type limiting component is arranged on the front side of the L-shaped plates 4 on the front side, lifting moving components are arranged on the left side and the right side of the installer body 3, lugs 23 are fixedly arranged on the top of the installer body 3, the number of the lugs 23 is four and are all positioned at the top of the installer body 3, the lugs 23 are made of metal materials, the external lifting equipment is convenient for placing the installer body 3 on the guide rail 1 through the lugs 23, the pulling component comprises a fixed plate 6 in the installer body 3, the opposite surfaces of the fixed plate 6 are fixedly provided with a mounting plate 7, a first connecting plate 8 is fixedly arranged between the opposite surfaces of the mounting plate 7 through bolts, a crawling hydraulic push rod 9 is fixedly arranged on the left side of the first connecting plate 8, a pull rope 10 is fixedly arranged at the output end of the crawling hydraulic push rod 9, a hook 11 is fixedly arranged at the left end of the pull rope 10, the hook 11 is slidably connected with the hanging hole 2, the output end of the crawling hydraulic push rod 9 arranged in the pulling component is driven to extend, the hook 11 is inserted into the hanging hole 2, the pull rope 10 is straightened, the output end of the crawling hydraulic push rod 9 is driven to shorten, the L-shaped plate 4 is driven to move by the installer body 3 conveniently through the actions of the hook 11 and the pull rope 10, thereby facilitating the main top hydraulic push rod 24 to push the installer body 3 to move again, the plug pin type limiting component comprises a limiting plate 12 arranged on the front side of the L-shaped plate 4 on the front side, a connecting plate II 13 is fixedly arranged between the opposite surfaces of the limiting plate 12 through bolts, a plug pin hydraulic push rod 14 is fixedly arranged on the front side of the connecting plate II 13, a moving plate 15 is fixedly arranged at the output end of the plug pin hydraulic push rod 14, a moving column 16 is fixedly arranged at the rear side of the moving plate 15, a limiting circular plate 17 is fixedly arranged at the rear end of the moving column 16, a plug pin column 18 is fixedly arranged at the rear side of the limiting circular plate 17, the plug pin column 18 is slidably connected with the limiting hole 5, the output end is driven to drive the moving plate 15 to move through the moving column 16 and the limiting circular plate 17 to push the plug pin column 18 to be inserted into the guide rail 1 through the limiting hole 5, thereby facilitating the L-shaped plate 4 to limit the position of the installer body 3, the offset of the installer body 3 is avoided when the main top hydraulic push rod 24 pushes the rectangular machine to move, the number of the bolt posts 18 is five, the five bolt posts 18 are distributed in a linear array, the bolt posts 18 are made of metal materials, the five bolt posts 18 are more stable to the L-shaped plate 4, so that the L-shaped plate 4 is more stable to the installer body 3, the number of the bolt hydraulic push rods 14 is two, the two bolt hydraulic push rods 14 are symmetrically distributed, the movable plate 15 moves more stably through the two bolt hydraulic push rods 14, the lifting type moving assembly comprises rectangular plates 19 arranged on the left side and the right side of the installer body 3, hand-operated jacks 20 are fixedly arranged at the bottoms of the rectangular plates 19, steel wheels 21 are fixedly arranged at the bottoms of the hand-operated jacks 20, reinforcing plates 22 are fixedly arranged at the tops of the rectangular plates 19, the reinforcing plate 22 is fixedly connected with the installer body 3, the hand-operated jack 20 at the bottom of the rectangular plate 19 is rocked, so that the hand-operated jack 20 pushes the installer body 3 to be separated from the guide rail 1 through the rectangular plate 19, the friction force between the installer body 3 and the guide rail 1 is reduced, the underground space rapidly moves to push the installer of the rectangular machine, the external hoisting equipment places the installer body 3 on the guide rail 1 through the hanging lugs 23, the steel wheel 21 is contacted with the top of the guide rail 1, the bolt hydraulic push rod 14 pushes the bolt column 18 to be inserted into the guide rail 1 through the moving plate 15, the moving column 16 and the limit circular plate 17, the output end is driven by the main top hydraulic push rod 24 to push the rectangular machine to move until the stroke of the main top hydraulic push rod 24 is extended, the hand-operated jack 20 is rocked, the installer body 3 is separated from the guide rail 1, the output end of the main top hydraulic push rod 24 is retracted, the output end of the crawling hydraulic push rod 9 is driven to stretch, the hook 11 is inserted into the hanging hole 2, the bolt hydraulic push rod 14, the moving plate 15, the moving column 16 and the limiting circular plate 17 drive the bolt column 18 to slide out of the guide rail 1, the installer body 3 is pulled to move through the steel wheel 21 by the crawling hydraulic push rod 9, when the output end of the main jacking hydraulic push rod 24 is contacted with a rectangular machine, the supporting effect of the hand-operated jack 20 on the rectangular plate 19 and the installer body 3 is relieved, the L-shaped plate 4 limits the installer body 3 by the bolt limiting component, the output end is driven by the main jacking hydraulic push rod 24 to push the rectangular machine to move until the stroke of the main jacking hydraulic push rod 24 is completed, the aim of facilitating movement of the rectangular machine is fulfilled, the condition that a relay mode needs to be assembled and disassembled by welding is avoided, the condition that the disassembling and assembling method is complicated in the winch traction system mode is avoided, and the dangerous coefficient in the traction process is high, the situation that the rectangular machine runs on the rolling steel in a balanced way and is high in cost must be kept.
When in use: the external hoisting equipment places the installer body 3 on the guide rail 1 through the hanging lugs 23, the steel wheel 21 arranged in the lifting moving assembly is contacted with the top of the guide rail 1, the installer body 3 is contacted with the L-shaped plate 4 and the guide rail 1, the output end is driven by the bolt hydraulic push rod 14 arranged in the bolt type limiting assembly to drive the moving plate 15 to approach the L-shaped plate 4, the moving column 16 is pushed to move to the rear side through the moving plate 15, the moving column 16 is pushed by the limiting circular plate 17 to push the bolt column 18 to be inserted into the guide rail 1 through the limiting hole 5, the L-shaped plate 4 is used for limiting the position of the installer body 3, the output end is driven by the main roof hydraulic push rod 24 to push the rectangular machine until reaching the stroke of the main roof hydraulic push rod 24, the hand-operated jack 20 at the bottom of the rectangular plate 19 is rocked, the output end of the hand-operated jack 20 is driven by the rectangular plate 19 to be separated from the guide rail 1, the output end of the main roof hydraulic push rod 24 is retracted, the crawling hydraulic push rod 9 arranged in the pulling assembly is driven by the pulling assembly to drive the output end to stretch, the hook 11 is inserted into the hanging hole 2, the hook 10 is pulled by the limiting circular plate 17 to push rod 18 to push the limit circular plate 18, the main body is driven by the main roof rod 19 to move the main roof rod 19 through the main roof hydraulic push rod 19, the main body is driven by the main jack rod 19 to move the main jack rod 19, the main jack rod 19 is driven by the main jack rod 9 to move the main body is driven by the main jack rod 9 through the main jack rod 9, the main jack rod 11 to move the main jack rod 11 through the main jack rod 9, the main jack rod 11 is driven by the main jack drive the main jack rod 11 through the main jack drive the output end through the main jack rod 9, the main jack rod 11 is driven by the main jack rod and the main jack rod 11, the supporting effect of the hand jack 20 on the rectangular plate 19 and the installer body 3 is relieved, the installer body 3 is in contact with the guide rail 1, the output end is driven by the bolt hydraulic push rod 14 arranged in the bolt type limiting assembly to drive the moving plate 15 to approach the L-shaped plate 4, the moving column 16 is pushed to move to the rear side by the moving plate 15, the moving column 16 is pushed by the limiting circular plate 17 to push the bolt column 18 to be inserted into the guide rail 1 through the limiting hole 5, the L-shaped plate 4 limits the position of the installer body 3, the rectangular machine is pushed by the output end to move until the stroke of the main roof hydraulic push rod 24 is completed, and the rectangular machine can be moved again, so that the rectangular machine is repeatedly moved out.
In summary, this underground space swiftly removes top pushing rectangular machine installer, outside lifting device is through hangers 23 with installer main part 3 place on guide rail 1, make steel wheel 21 and guide rail 1 top contact, pass through movable plate 15 through the bolt hydraulic push rod 14, movable column 16 and spacing plectane 17 promote bolt post 18 and insert inside guide rail 1, drive the travel of output promotion rectangular machine through main top hydraulic push rod 24 until reaching main top hydraulic push rod 24, shake hand formula jack 20, make installer main part 3 and guide rail 1 separation, withdraw the output of main top hydraulic push rod 24, the extension of crawling hydraulic push rod 9 drive output, again with couple 11 insert hanging hole 2 inside, bolt hydraulic push rod 14, movable plate 15, movable column 16 and spacing plectane 17 drive bolt post 18 follow guide rail 1 and slide, pass through steel wheel 21 through the bolt hydraulic push rod 9 pulling installer main part 3 and remove, when the output of main top hydraulic push rod 24 and rectangular machine contact, the support effect of hand formula jack 20 to bolt plate 19 and fixer main part 3, make L4 carry out the relay 3 through main top hydraulic push rod 24 to carry out the extension of main part, the relay drive the situation of installing in the rectangular machine has been avoided the high-level relay system to carry out the situation of the installation in the need of the high-speed relay system, the situation has been avoided in the difficult condition of installing the installation of the relay system, the invention has been realized in the method of the high-level lifting relay, the situation has been realized, the problem has been avoided in the installation of the need of the method of the lifting relay, the situation of the lifting device has been convenient to be avoided.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a swift removal of underground space pushes away rectangular machine erector, includes guide rail (1), a serial communication port, guide rail (1) surface runs through and is provided with hanging hole (2), guide rail (1) surface overlap joint is provided with installer main part (3), the inside fixed main hydraulic push rod (24) that is provided with of installer main part (3), both sides are all fixed in front and back of installer main part (3) are provided with L template (4), L template (4) surface runs through and are provided with spacing hole (5), the inside pulling subassembly that is provided with of installer main part (3), the front side of L template (4) is provided with bolt formula spacing subassembly, both sides all are provided with lift type movable assembly about installer main part (3).
2. The quick-moving pushing rectangular machine installer for the underground space according to claim 1, wherein the pulling assembly comprises a fixing plate (6) inside an installer main body (3), the opposite surfaces of the fixing plate (6) are fixedly provided with mounting plates (7), a first connecting plate (8) is fixedly arranged between the opposite surfaces of the mounting plates (7) through bolts, a crawling hydraulic push rod (9) is fixedly arranged on the left side of the first connecting plate (8), a pull rope (10) is fixedly arranged at the output end of the crawling hydraulic push rod (9), a hook (11) is fixedly arranged at the left end of the pull rope (10), and the hook (11) is slidably connected with the hanging hole (2).
3. The quick-moving pushing rectangular machine installer for the underground space according to claim 1, wherein the plug pin type limiting assembly comprises a limiting plate (12) arranged on the front side of an L-shaped plate (4) on the front side, a second connecting plate (13) is fixedly arranged between opposite surfaces of the limiting plate (12) through bolts, a plug pin hydraulic push rod (14) is fixedly arranged on the front side of the second connecting plate (13), a moving plate (15) is fixedly arranged at the output end of the plug pin hydraulic push rod (14), a moving column (16) is fixedly arranged on the rear side of the moving plate (15), a limiting circular plate (17) is fixedly arranged at the rear end of the moving column (16), and a plug pin column (18) is fixedly arranged on the rear side of the limiting circular plate (17), and is slidably connected with the limiting hole (5).
4. The underground space quick-moving pushing rectangular machine installer according to claim 1, wherein the lifting moving assembly comprises rectangular plates (19) arranged on the left side and the right side of the installer main body (3), hand-operated jacks (20) are fixedly arranged at the bottoms of the rectangular plates (19), steel wheels (21) are fixedly arranged at the bottoms of the hand-operated jacks (20), reinforcing plates (22) are fixedly arranged at the tops of the rectangular plates (19), and the reinforcing plates (22) are fixedly connected with the installer main body (3).
5. A quick-action pushing rectangular machine mounting device for an underground space according to claim 3, wherein the number of the bolt posts (18) is five, the five bolt posts (18) are distributed in a linear array, and the bolt posts (18) are made of metal.
6. The quick-move pushing rectangular machine installer for underground space according to claim 3, wherein the number of the bolt hydraulic pushing rods (14) is two, and the two bolt hydraulic pushing rods (14) are symmetrically distributed.
7. The quick-moving pushing rectangular machine installer for the underground space according to claim 1, wherein hanging lugs (23) are fixedly arranged at the top of the installer body (3), the number of the hanging lugs (23) is four and are all positioned at the top of the installer body (3), and the hanging lugs (23) are made of metal materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322761070.6U CN220886959U (en) | 2023-10-13 | 2023-10-13 | Quick movable pushing rectangular machine installer for underground space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322761070.6U CN220886959U (en) | 2023-10-13 | 2023-10-13 | Quick movable pushing rectangular machine installer for underground space |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220886959U true CN220886959U (en) | 2024-05-03 |
Family
ID=90843023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322761070.6U Active CN220886959U (en) | 2023-10-13 | 2023-10-13 | Quick movable pushing rectangular machine installer for underground space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220886959U (en) |
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2023
- 2023-10-13 CN CN202322761070.6U patent/CN220886959U/en active Active
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