CN222152216U - Large-span shallow-buried underground-excavated power tunnel construction equipment - Google Patents
Large-span shallow-buried underground-excavated power tunnel construction equipment Download PDFInfo
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- CN222152216U CN222152216U CN202421205993.1U CN202421205993U CN222152216U CN 222152216 U CN222152216 U CN 222152216U CN 202421205993 U CN202421205993 U CN 202421205993U CN 222152216 U CN222152216 U CN 222152216U
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- crushing
- driving
- belt
- cleaning
- rotate
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- 238000010276 construction Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000004140 cleaning Methods 0.000 claims abstract description 44
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 239000007921 spray Substances 0.000 claims abstract description 10
- 238000007790 scraping Methods 0.000 claims abstract description 8
- 239000004575 stone Substances 0.000 claims description 59
- 239000000428 dust Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 11
- 238000009412 basement excavation Methods 0.000 claims description 10
- 239000002893 slag Substances 0.000 claims description 9
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000011435 rock Substances 0.000 description 6
- 238000005406 washing Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 239000013049 sediment Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
本实用新型涉及隧道施工设备技术领域的一种大跨度浅埋暗挖电力隧道施工设备，所述破碎箱内设置有用于驱动输送带进行转动的驱动组件；所述清扫装置包括用于对输送带进行刮除的清扫组件，所述驱动组件的下方设置有用于驱动清扫组件进行前后往复移动的调节组件；所述喷淋管的顶端设置有用于向喷淋管输送清洗水的分流管。使破碎辊一与破碎辊二转动，对碎石进行破碎；使传动轴发生转动，使皮带辊带动输送带将从漏料板落下的碎石进行排出，可带动双向丝杆转动，并使清扫板沿着双向丝杆的杆体进行前后往复移动；将刮板上的泥水进行清除，以减少输送带上的粘接的泥水，同时在对碎石进行破碎时，可通过抽水管将储水腔中的清洗水通过分流管向喷洒管输送。
The utility model relates to a large-span shallow buried electric tunnel construction equipment in the technical field of tunnel construction equipment, wherein a driving assembly for driving a conveyor belt to rotate is arranged in the crushing box; the cleaning device includes a cleaning assembly for scraping the conveyor belt, and an adjusting assembly for driving the cleaning assembly to reciprocate back and forth is arranged below the driving assembly; the top of the spray pipe is provided with a shunt pipe for conveying cleaning water to the spray pipe. The crushing roller 1 and the crushing roller 2 are rotated to crush the gravel; the transmission shaft is rotated so that the belt roller drives the conveyor belt to discharge the gravel falling from the leakage plate, which can drive the bidirectional screw to rotate and make the cleaning plate reciprocate back and forth along the rod body of the bidirectional screw; the muddy water on the scraper is cleared to reduce the muddy water adhering to the conveyor belt, and when the gravel is crushed, the cleaning water in the water storage chamber can be conveyed to the spray pipe through the shunt pipe through the water pump pipe.
Description
Technical Field
The utility model relates to the technical field of tunnel construction equipment, in particular to large-span shallow-buried underground excavation power tunnel construction equipment.
Background
In the process of shallow-buried underground excavation construction of the electric power tunnel, a large amount of stones can appear when the mountain is excavated, and some stones are too large and inconvenient to transport, so that the large stones are required to be crushed and then transported to the required positions. For example, shown in a large-span shallow-buried underground tunnel construction equipment with a chinese patent application number CN202120317117.8, the cleaning device is moved forward by the rock cleaner, so that the rock after being crushed on the ground is shoveled into the inside of the trapezoid groove, and the trapezoid groove is designed, so that when the rock passes through the triangle block to the inside of the trapezoid groove, the triangle block moves upwards in an arc manner, so that the rock in the inside cannot fall due to the phenomenon of falling of the rock caused by movement and the like, and the rectangular push plate is driven to move leftwards due to the force of the rock shoveling of the bucket.
However, as the broken stone is crushed and then transported in the treatment mode of the mountain broken stone, a large amount of dust is easily generated in the crushing process of the broken stone, so that the air quality in a tunnel is polluted, and the crushed broken stone with a large volume is easily blocked, so that the discharge of the crushed broken stone is influenced.
Disclosure of utility model
In order to solve the problems that a large amount of dust is easily generated in the crushing process of crushed stones, so that the air quality in a tunnel is polluted, and the crushed stones with larger volumes are easily blocked and can influence the discharge of the crushed stones, the utility model provides the following technical scheme:
The utility model provides a shallow electric power tunnel construction equipment that secretly digs of large-span, includes the base, the top fixed mounting of base has broken case, be provided with the breaker that is used for carrying out broken stone in the broken case, be provided with the discharge device who is used for shifting out broken stone after the broken case in the broken case, be provided with the dust collector who is used for the dust fall in the broken case, discharge device's bottom is provided with the cleaning device who is used for striking off muddy water.
The crushing box is internally and fixedly provided with a material leakage plate for filtering crushed stone crushed by the crushing device.
The discharging device comprises a conveying belt used for moving broken gravels out, and a driving assembly used for driving the conveying belt to rotate is arranged in the breaking box.
The cleaning device comprises a cleaning assembly used for scraping the conveying belt, and an adjusting assembly used for driving the cleaning assembly to reciprocate back and forth is arranged below the driving assembly.
The dust removing device comprises a spray pipe used for spraying cleaning water into the crushing box, a shunt pipe used for conveying the cleaning water to the spray pipe is arranged at the top end of the spray pipe, and a water pumping pipe used for conveying the cleaning water into the shunt pipe is arranged at the top end of the shunt pipe.
Further, the crushing device comprises a crushing component I for crushing broken stones in the crushing box, a crushing component II for crushing broken stones in the crushing box by being matched with the crushing component I is arranged on the left side of the crushing component I, and the crushing component II is connected with the driving component through a belt.
Further, the first crushing assembly comprises a first crushing roller used for crushing crushed stone, a first rotating shaft used for driving the first crushing roller to rotate is fixedly arranged at the front end of the first crushing roller, a motor used for driving the first rotating shaft to rotate is fixedly arranged at the front end of the first rotating shaft, and a first gear used for driving the second crushing assembly to rotate is arranged on the shaft body of the first rotating shaft.
Further, the crushing assembly II comprises a crushing roller II which is arranged in the crushing box and matched with the crushing roller I to crush broken stone, a rotating shaft II which is used for driving the crushing roller II to rotate is fixedly arranged at the front end of the crushing roller II, a gear II which is used for being meshed with the gear I is fixedly arranged on a shaft body of the rotating shaft II, and a belt pulley I which is used for driving the driving assembly to rotate is fixedly arranged at the front end of the rotating shaft II.
Further, the driving assembly comprises a belt roller for driving the conveying belt to rotate, a transmission shaft for driving the belt roller to rotate is fixedly arranged at the front end of the belt roller, a belt pulley II for driving the transmission shaft to rotate is fixedly arranged at the front end of the transmission shaft, and the belt pulley II is connected with the belt pulley I through a belt.
Further, the adjusting assembly comprises a bidirectional screw rod used for rotating, a belt pulley III used for driving the bidirectional screw rod to rotate is fixedly arranged at the front end of the bidirectional screw rod, the belt pulley III is connected with the belt pulley II through a belt, and a guide rod used for assisting the cleaning assembly to reciprocate back and forth is arranged on the left side of the bidirectional screw rod.
Further, clean the subassembly including fixed mounting at the mounting bracket of broken case left end, the one end fixed mounting that is close to broken case of mounting bracket has the scraper blade that is used for striking off the muddy water on the conveyer belt, the silk has been connected on the body of rod of two-way lead screw and has been used for cleaning the muddy water on the scraper blade and clean the board.
Further, the delivery port that is used for adding the rubble to the crushing incasement has been seted up on the top of base, the top of crushing case is provided with the water injection pipe that is used for adding the washing water to the crushing incasement, the top fixed mounting of base has the sediment case that is used for storing big rubble, the discharge gate that is used for discharging the big rubble after leaking the flitch filtration to the sediment incasement is seted up to the right-hand member of crushing case, the bottom fixed mounting of base has the universal wheel that is used for driving the base and removes.
Compared with the prior art, the utility model has the beneficial effects that:
The crushing device, the discharging device, the cleaning device and the dust removing device are arranged, so that the motor drives the rotating shaft to rotate, the crushing roller I and the crushing roller II rotate under the meshing connection of the gear I and the gear II, broken stones can be crushed, larger broken stones can be discharged into the slag storage box through the discharging hole, smaller broken stones are discharged to the discharging device through the material leakage plate, meanwhile, the transmission shaft is driven to rotate under the connection of the belt pulley I and the belt pulley II, the belt roller can drive the conveying belt to discharge broken stones falling from the material leakage plate, the belt pulley II is driven to rotate under the connection of the belt pulley II and the belt pulley III, the cleaning plate can drive the bidirectional screw rod to reciprocate back and forth along the rod body of the bidirectional screw rod, and mud water on the scraping plate can be removed to reduce adhered mud water on the conveying belt.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a cross-sectional view of the crushing tank of the present utility model;
FIG. 3 is a schematic view of a crushing device according to the present utility model;
FIG. 4 is a schematic view of the structure of the discharging device of the present utility model;
Fig. 5 is a schematic structural view of a cleaning device according to the present utility model.
In the drawings, the list of part names represented by the reference numerals is as follows:
100-of a base, 001-of a water injection pipe, 002-of a slag storage box, 003-of universal wheels, 004-of a conveying port, 005-of a discharge port and 101-of a material leakage plate;
200-crushing box;
300-crushing device, 310-crushing assembly I, 311-motor, 312-rotating shaft I, 313-gear I, 314-crushing roller I, 320-crushing assembly II, 321-rotating shaft II, 322-belt pulley I, 323-gear II, 324-crushing roller II;
400-discharge device, 410-drive assembly, 411-drive shaft, 412-pulley two, 413-belt roller, 420-conveyor belt;
500-cleaning device, 510-adjusting component, 511-belt pulley three, 512-bidirectional screw rod, 513-guide rod, 520-cleaning component, 521-mounting frame, 522-scraper and 523-cleaning plate;
600-dust collector, 610-water pumping pipe, 620-shunt tubes and 630-spray header.
Detailed Description
Preferred embodiments for carrying out the present utility model are described in detail below, and a clear and complete description thereof is provided with reference to the accompanying drawings.
Referring to fig. 1-5, the present utility model provides a large-span shallow-buried underground-excavated power tunnel construction device.
Including base 100, the top fixed mounting of base 100 has broken case 200, is provided with the breaker 300 that is used for carrying out broken stone in the broken case 200, is provided with in the broken case 200 and is used for shifting out the discharge device 400 of broken stone after breaking, is provided with the dust collector 600 that is used for the dust fall in the broken case 200, and the bottom of discharge device 400 is provided with the cleaning device 500 that is used for striking off muddy water.
The crushing box 200 is divided into a crushing cavity and a water storage cavity, a conveying opening 004 for adding crushed stone into the crushing box 200 is formed in the top end of the base 100, the conveying opening 004 is located at the top end of the crushing cavity of the crushing box 200, a water injection pipe 001 for adding cleaning water into the crushing box 200 is arranged at the top end of the crushing box 200, a slag storage box 002 for storing large crushed stone is fixedly arranged at the top end of the base 100 located at the top end of the water storage cavity, a discharge opening 005 for discharging the large crushed stone filtered by the material leakage plate 101 into the slag storage box 002 is formed in the right end of the crushing box 200, and a universal wheel 003 for driving the base 100 to move is fixedly arranged at the bottom end of the base 100.
The crushing box 200 is fixedly provided with a material leakage plate 101 for filtering crushed stone crushed by the crushing device 300, and the material leakage plate 101 is arranged in a left-high-right-low-inclined manner so as to filter the crushed stone crushed by the crushing device 300, the larger crushed stone is discharged through a discharge hole 005, and the smaller crushed stone is discharged through a discharge device 400.
The crushing device 300 comprises a crushing component I310 for crushing the crushed stone in the crushing box 200, a crushing component II 320 which is matched with the crushing component I310 to crush the crushed stone in the crushing box 200 is arranged on the left side of the crushing component I310, and the crushing component II 320 is connected with a driving component 410 through a belt.
The crushing assembly one 310 comprises a crushing roller one 314 for crushing crushed stone, a rotating shaft one 312 for driving the crushing roller one 314 to rotate is fixedly arranged at the front end of the crushing roller one 314, a motor 311 for driving the rotating shaft one 312 to rotate is fixedly arranged at the front end of the rotating shaft one 312, and a gear one 313 for driving the crushing assembly two 320 to rotate is arranged on the shaft body of the rotating shaft one 312.
The crushing assembly II 320 comprises a crushing roller II 324 which is arranged in the crushing box 200 and matched with the crushing roller I314 to crush broken stone, a rotating shaft II 321 which is used for driving the crushing roller II 324 to rotate is fixedly arranged at the front end of the crushing roller II 324, a gear II 323 which is used for being meshed with the gear I313 is fixedly arranged on the shaft body of the rotating shaft II 321, a belt pulley I322 which is used for driving the driving assembly 410 to rotate is fixedly arranged at the front end of the rotating shaft II 321, therefore, when broken stone in a large-span shallow-buried underground-excavated power tunnel is required to be crushed, the motor 311 can drive the rotating shaft 312 to rotate, and under the meshed connection of the gear I313 and the gear II 323, the crushing roller I314 and the crushing roller II 324 can be rotated, so that broken stone can be crushed, larger broken stone can be discharged into the slag storage box 002 through the discharge plate 101 to the discharge device 400.
The discharge device 400 comprises a conveyor belt 420 for removing crushed stone, the conveyor belt 420 is positioned right below the material leakage plate 101, and a driving assembly 410 for driving the conveyor belt 420 to rotate is arranged in the crushing box 200.
The driving assembly 410 comprises a belt roller 413 for driving the conveying belt 420 to rotate, a transmission shaft 411 for driving the belt roller 413 to rotate is fixedly arranged at the front end of the belt roller 413, a belt pulley II 412 for driving the transmission shaft 411 to rotate is fixedly arranged at the front end of the transmission shaft 411, the belt pulley II 412 is connected with the belt pulley III 322 through a belt, so that the motor 311 drives the rotation shaft 312 to rotate, the crushing roller III 314 and the crushing roller II 324 rotate under the meshing connection of the gear III 313 and the gear II 323, crushed stones can be crushed, larger crushed stones can be discharged into the slag storage tank 002 through the discharge hole 005, smaller crushed stones are discharged to the discharge device 400 through the discharge plate 101, and meanwhile, the belt roller 413 drives the conveying belt 420 to discharge the crushed stones falling from the discharge plate 101 under the connection of the belt pulley III 322 and the belt of the belt pulley II 412.
The cleaning device 500 includes a cleaning assembly 520 for scraping the conveyor belt 420, and an adjusting assembly 510 for driving the cleaning assembly 520 to reciprocate back and forth is provided below the driving assembly 410.
The adjusting assembly 510 comprises a bidirectional screw rod 512 for rotation, wherein the front end and the rear end of the bidirectional screw rod 512 are connected with a frame body of the mounting frame 521 through bearings so as to facilitate the rotation of the bidirectional screw rod 512, a belt pulley III 511 for driving the bidirectional screw rod 512 to rotate is fixedly arranged at the front end of the bidirectional screw rod 512, the belt pulley III 511 is connected with a belt pulley II 412 through a belt, and a guide rod 513 for assisting the cleaning assembly 520 to reciprocate back and forth is arranged at the left side of the bidirectional screw rod 512.
The cleaning assembly 520 comprises a mounting frame 521 fixedly arranged at the left end of the crushing box 200, a scraper 522 for scraping muddy water on the conveying belt 420 is fixedly arranged at one end of the mounting frame 521, which is close to the crushing box 200, and the scraper 522 is closely attached to the bottom end of the conveying belt 420, a cleaning plate 523 for cleaning muddy water on the scraper 522 is screwed on a rod body of the bidirectional screw rod 512, so that the motor 311 drives the rotating shaft 312 to rotate, the crushing roller I314 and the crushing roller II 324 are meshed with the gear I313 and connected with the gear II 323 to rotate, broken stone can be crushed, larger broken stone can be discharged into the slag storage box 002 through a discharge port 005, smaller broken stone can be discharged to the discharge device 400 through the material leakage plate 101, meanwhile, under the connection of the belt pulley I322 and the belt of the belt II 412, the transmission shaft 411 can rotate, the belt roller 413 drives the conveying belt 420 to discharge the broken stone falling from the material leakage plate 101, under the connection of the belt II and the belt III 511, the bidirectional screw rod 512 can be driven to rotate, and the cleaning plate 523 can be driven to reciprocate along the belt body of the belt II 512, and the muddy water can be cleaned and the muddy water on the rod body of the bidirectional screw rod 512 can be removed after the reciprocating movement of the scraper rod body of the conveying belt 512.
The dust removing apparatus 600 includes a shower pipe 630 for spraying the washing water into the crushing tank 200, a shunt pipe 620 for delivering the washing water to the shower pipe 630 is provided at the top end of the shower pipe 630, a water suction pipe 610 for delivering the washing water into the shunt pipe 620 is provided at the top end of the shunt pipe 620, and the water suction pipe 610 is connected with a water storage chamber of the crushing tank 200, so that the washing water in the water storage chamber is delivered to the shower pipe 630 through the shunt pipe 620 when crushing crushed stone, thereby preventing the crushing apparatus 300 from generating air quality in a dust-polluted tunnel.
Based on the above description and the drawings, one skilled in the art will be able to understand and practice the present utility model. Furthermore, any non-inventive modifications to the present utility model that would not be made by a person skilled in the art without the inventive effort would still fall within the scope of the present utility model.
Claims (8)
1. The large-span shallow-buried underground excavation power tunnel construction equipment comprises a base (100) and is characterized in that a crushing box (200) is fixedly arranged at the top end of the base (100), a crushing device (300) for crushing broken stones is arranged in the crushing box (200), a discharging device (400) for removing the crushed broken stones is arranged in the crushing box (200), a dust removing device (600) for dust fall is arranged in the crushing box (200), and a cleaning device (500) for scraping muddy water is arranged at the bottom end of the discharging device (400);
a material leakage plate (101) for filtering crushed stone crushed by the crushing device (300) is fixedly arranged in the crushing box (200);
The discharging device (400) comprises a conveying belt (420) for removing crushed stones, and a driving assembly (410) for driving the conveying belt (420) to rotate is arranged in the crushing box (200);
The cleaning device (500) comprises a cleaning assembly (520) for scraping the conveyor belt (420), and an adjusting assembly (510) for driving the cleaning assembly (520) to reciprocate back and forth is arranged below the driving assembly (410);
The dust removing device (600) comprises a spray pipe (630) for spraying cleaning water into the crushing box (200), a shunt pipe (620) for conveying the cleaning water to the spray pipe (630) is arranged at the top end of the spray pipe (630), and a water pumping pipe (610) for conveying the cleaning water into the shunt pipe (620) is arranged at the top end of the shunt pipe (620).
2. The large-span shallow-buried underground excavation power tunnel construction equipment according to claim 1, wherein the crushing device (300) comprises a crushing component I (310) for crushing crushed stone in the crushing box (200), a crushing component II (320) for crushing the crushed stone in the crushing box (200) in cooperation with the crushing component I (310) is arranged on the left side of the crushing component I (310), and the crushing component II (320) is connected with the driving component (410) through a belt.
3. The large-span shallow-buried underground excavation power tunnel construction equipment according to claim 2, wherein the first crushing assembly (310) comprises a first crushing roller (314) for crushing crushed stone, a first rotating shaft (312) for driving the first crushing roller (314) to rotate is fixedly arranged at the front end of the first crushing roller (314), a motor (311) for driving the first rotating shaft (312) to rotate is fixedly arranged at the front end of the first rotating shaft (312), and a first gear (313) for driving the second crushing assembly (320) to rotate is arranged on the shaft body of the first rotating shaft (312).
4. The large-span shallow-buried underground excavation power tunnel construction equipment according to claim 3, wherein the second crushing assembly (320) comprises a second crushing roller (324) which is arranged in the crushing box (200) and matched with the first crushing roller (314) to crush crushed stones, a second rotating shaft (321) used for driving the second crushing roller (324) to rotate is fixedly arranged at the front end of the second crushing roller (324), a second gear (323) used for being meshed with the first gear (313) is fixedly arranged on the shaft body of the second rotating shaft (321), and a first belt pulley (322) used for driving the driving assembly (410) to rotate is fixedly arranged at the front end of the second rotating shaft (321).
5. The large-span shallow-buried underground excavation power tunnel construction equipment according to claim 4, wherein the driving assembly (410) comprises a belt roller (413) for driving the conveying belt (420) to rotate, a transmission shaft (411) for driving the belt roller (413) to rotate is fixedly arranged at the front end of the belt roller (413), a belt pulley II (412) for driving the transmission shaft (411) to rotate is fixedly arranged at the front end of the transmission shaft (411), and the belt pulley II (412) is connected with the belt pulley I (322) through a belt.
6. The large-span shallow-buried underground excavation power tunnel construction equipment according to claim 5, wherein the adjusting component (510) comprises a bidirectional screw rod (512) used for rotating, a belt pulley III (511) used for driving the bidirectional screw rod (512) to rotate is fixedly arranged at the front end of the bidirectional screw rod (512), the belt pulley III (511) is connected with a belt pulley II (412) through a belt, and a guide rod (513) used for assisting the cleaning component (520) to reciprocate back and forth is arranged on the left side of the bidirectional screw rod (512).
7. The large-span shallow-buried underground excavation power tunnel construction equipment according to claim 6, wherein the cleaning assembly (520) comprises a mounting frame (521) fixedly mounted at the left end of the crushing box (200), a scraper (522) for scraping muddy water on the conveying belt (420) is fixedly mounted at one end, close to the crushing box (200), of the mounting frame (521), and a cleaning plate (523) for cleaning muddy water on the scraper (522) is connected to a rod body of the bidirectional screw rod (512) in a threaded manner.
8. The large-span shallow-buried underground excavation power tunnel construction equipment of claim 1, wherein a conveying port (004) for adding broken stone into a crushing box (200) is formed in the top end of the base (100), a water injection pipe (001) for adding cleaning water into the crushing box (200) is arranged at the top end of the crushing box (200), a slag storage box (002) for storing large broken stone is fixedly arranged at the top end of the base (100), a discharge port (005) for discharging the large broken stone filtered by the material leakage plate (101) into the slag storage box (002) is formed in the right end of the crushing box (200), and a universal wheel (003) for driving the base (100) to move is fixedly arranged at the bottom end of the base (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421205993.1U CN222152216U (en) | 2024-05-30 | 2024-05-30 | Large-span shallow-buried underground-excavated power tunnel construction equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421205993.1U CN222152216U (en) | 2024-05-30 | 2024-05-30 | Large-span shallow-buried underground-excavated power tunnel construction equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222152216U true CN222152216U (en) | 2024-12-13 |
Family
ID=93771715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421205993.1U Active CN222152216U (en) | 2024-05-30 | 2024-05-30 | Large-span shallow-buried underground-excavated power tunnel construction equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222152216U (en) |
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2024
- 2024-05-30 CN CN202421205993.1U patent/CN222152216U/en active Active
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