CN211772678U - Road construction is with spraying curing means - Google Patents
Road construction is with spraying curing means Download PDFInfo
- Publication number
- CN211772678U CN211772678U CN202020288901.6U CN202020288901U CN211772678U CN 211772678 U CN211772678 U CN 211772678U CN 202020288901 U CN202020288901 U CN 202020288901U CN 211772678 U CN211772678 U CN 211772678U
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- Prior art keywords
- water tank
- hole
- water
- pipe
- plate
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- 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.)
- Expired - Fee Related
Links
- 238000010276 construction Methods 0.000 title claims abstract description 21
- 238000005507 spraying Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 144
- 238000012423 maintenance Methods 0.000 claims abstract description 25
- 238000005096 rolling process Methods 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Abstract
A spraying maintenance device for road construction comprises a cart, a water tank, a water inlet pipe, a water outlet pipe, a spring, a pulling assembly, a three-way valve, a sprinkling pipe and a rope; the water tank is arranged on the flat plate, and a pressure plate is arranged in the water tank; the water outlet pipe is arranged at the bottom of the water tank, and the water outlet end of the water outlet pipe is connected with the three-way valve; the other two interfaces of the three-way valve are respectively connected with the two groups of sprinkling pipes, and water outlet holes are arranged on the sprinkling pipes; the water inlet pipe extends into the water tank, and the upper end of the water inlet pipe extends out of the water tank; a plurality of groups of springs are positioned in the water tank, one end of each spring is connected with the top of the pressure plate, the other end of each spring is connected with the inner side of the top of the water tank, and the springs are always in a compressed state; the middle part of the upper end of the pressure plate is provided with a pull ring; one end of the rope is tied on the pull ring, and the other end of the rope is connected with the pulling-up component; the pulling-up component is arranged on the top of the water tank. In the utility model, the sprinkling operation is simple and the efficiency is high; the water is uniformly sprayed, so that the water resource is effectively saved; and the impact force of water to the road surface is very small in the watering process, so that the damage to the road surface in the maintenance process is prevented.
Description
Technical Field
The utility model relates to a road maintenance technical field especially relates to a road construction is with spraying curing means.
Background
Should cover the protection when road construction is floating, concrete initial set is that the people stands to go on to have no footprint, just need carry out the watering maintenance to the road surface this moment, and most job sites all are watering with water pipe large tracts of land at present, and this kind of watering mode leads to the local unevenness in road surface to the road surface of initial set causing the impact easily, and inefficiency, and artifical water pipe watering easily leads to the watering inhomogeneous simultaneously, causes the large amount of wastes of water resource.
SUMMERY OF THE UTILITY MODEL
Objects of the invention
In order to solve the technical problems existing in the background technology, the utility model provides a spraying maintenance device for road construction, which has simple sprinkling operation and high efficiency; the water is uniformly sprayed, so that the water resource is effectively saved; and the impact force of water to the road surface is very small in the watering process, so that the damage to the road surface in the maintenance process is prevented.
(II) technical scheme
The utility model provides a spraying maintenance device for road construction, which comprises a cart, a water tank, a water inlet pipe, a water outlet pipe, a spring, a pulling-up component, a three-way valve, a sprinkling pipe and a rope; the cart comprises a flat plate, a rolling device and a push handle;
a plurality of groups of rolling devices are arranged at the bottom of the flat plate; the push handle is arranged on one side of the flat plate;
the water tank is arranged on the upper end surface of the flat plate, the top of the water tank is provided with a third through hole and a fourth through hole, and a pressing plate is arranged in the water tank; a sealing ring is arranged between the pressing plate and the inner wall of the water tank, and the pressing plate is provided with a fifth through hole; a sealing ring is arranged between the wall of the fifth through hole and the water inlet pipe; the water outlet pipe is arranged at the bottom of the water tank, is parallel to the running direction of the cart, is provided with a second valve, and the water outlet end of the water outlet pipe is connected with a three-way valve; the other two interfaces of the three-way valve are respectively connected with the two groups of sprinkling pipes; the two ends of the sprinkler pipe are provided with sealing rings, and a plurality of groups of water outlet holes are formed in the sprinkler pipe; the bottom of the water inlet pipe is inserted into the fifth through hole in a matched mode and extends into the space of the water tank below the pressing plate, the upper end of the water inlet pipe penetrates through the fourth through hole and extends out of the water tank, and a first valve is arranged on the water inlet pipe; a plurality of groups of springs are positioned in the water tank, one end of each spring is connected with the top of the pressure plate, the other end of each spring is connected with the inner side of the top of the water tank, and the springs are always in a compressed state;
the middle part of the upper end of the pressure plate is provided with a pull ring; one end of the rope is tied on the pull ring, the other end of the rope penetrates through the third through hole and extends out of the water tank, and the end of the rope extending out of the water tank is connected with the pulling-up assembly; the pulling-up component is arranged on the top of the water tank.
Preferably, the lifting assembly comprises a supporting plate, a supporting rod, a first limiting ring, a wire spool and a rocker;
the supporting plate is arranged at the upper end of the water tank, and a plurality of groups of limiting holes are formed in the supporting plate; the limiting holes are formed in the end face, facing the push handle, of the supporting plate and the end face, back to the push handle, of the supporting plate; the wire spool is provided with a first through hole and a second through hole; the first through hole and the second through hole form openings on the end faces, facing the supporting plate and the pushing handle, of the wire spool, and the second through hole is opposite to the limiting hole; one end of the supporting rod passes through the first through hole and is connected with the supporting plate, and the other end of the supporting rod is provided with a first limiting ring; the diameter of the first limiting ring is larger than that of the first through hole; one end of the rocker penetrates through the second through hole and the limiting hole, and the other end of the rocker is suspended and is positioned between the wire spool and the push handle; the end of the rope extending out of the water tank is tied on the wire spool.
Preferably, the wall of the water outlet hole of the sprinkling pipe is internally provided with a grid yarn.
Preferably, the sprinkler pipe sets up the multiunit, and the water pipe quick-operation joint concatenation is passed through between two sets of adjacent sprinkler pipes, and the sprinkler pipe is perpendicular with the shallow traffic direction.
Preferably, set up the bar groove that the multiunit is parallel to each other on the terminal surface under the flat board, rolling device is the cylinder, and the pivot both ends of cylinder are connected with bar groove cell wall rotation respectively, and the cylinder is perpendicular with shallow traffic direction.
Preferably, the upper end face of the flat plate is provided with a storage box, and the storage box is positioned between the water tank and the push handle.
Preferably, the rocker is equipped with the antiskid silica gel layer on keeping away from the outer peripheral face of backup pad.
Preferably, a second limiting block is arranged on the outer peripheral surface of the rocker, and the second limiting block is in contact with one end, facing the pushing handle, of the wire spool.
The above technical scheme of the utility model has following profitable technological effect: rise through pulling the subassembly pulling rope, thereby it rises to drive the clamp plate, the clamp plate rises, it rises to drive the inlet tube, after the inlet tube stretches out fourth through hole, open first valve, from the inlet tube toward the interior water injection of water tank, close first valve after the water volume can't pour into again in the water tank, loosen and pull the subassembly, the clamp plate is pressure is exerted to the water in the water tank under the thrust effect of spring again, when needing to use, only need open the second valve on the outlet pipe, water in the water tank flows into the sprinkler pipe under the pressure of gravity and clamp plate, and spout in the outlet hole of sprinkler pipe, spill on the road surface that needs the maintenance, the watering in-process, only need push away the shallow straight ahead and can carry out even watering to the road surface, and can connect to get the multiunit sprinkler pipe according to road surface width, efficiency is greatly improved. In the utility model, the sprinkling operation is simple and the efficiency is high; the water is uniformly sprayed, so that the water resource is effectively saved; and the impact force of water to the road surface is very small in the watering process, so that the damage to the road surface in the maintenance process is prevented.
Drawings
Fig. 1 is the utility model provides a road construction is with spraying maintenance device's schematic structure diagram.
Fig. 2 is the utility model provides a road construction is with spraying maintenance device's top view.
Fig. 3 is the utility model provides a road construction is with the structural schematic diagram of sprinkler pipe among the maintenance device that sprays.
Fig. 4 is the utility model provides a road construction is with spraying the schematic structure diagram of rolling device among the curing means.
Fig. 5 is the utility model provides a road construction is with pulling up the structural schematic diagram of subassembly among the spraying and curing device.
Reference numerals: 1. a flat plate; 11. a storage box; 12. a strip-shaped groove; 2. a rolling device; 3. a push handle; 4. a water tank; 41. a water inlet pipe; 411. a first valve; 42. a water outlet pipe; 421. a second valve; 43. a third through hole; 44. a fourth via hole; 45. pressing a plate; 451. a fifth through hole; 452. a pull ring; 5. a spring; 6. a pulling-up assembly; 61. a support plate; 611. a limiting hole; 62. a support bar; 63. a first limit ring; 64. a wire spool; 641. a first through hole; 642. a second through hole; 65. a rocker; 651. an anti-slip silica gel layer; 652. a second limiting block; 7. a three-way valve; 8. a sprinkler pipe; 81. a water outlet hole; 82. a grid yarn; 83. a seal ring; 9. a rope.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1-5, the utility model provides a spraying maintenance device for road construction, which comprises a cart, a water tank 4, a water inlet pipe 41, a water outlet pipe 42, a spring 5, a lifting component 6, a three-way valve 7, a sprinkling pipe 8 and a rope 9; the cart comprises a flat plate 1, a rolling device 2 and a push handle 3;
a plurality of groups of rolling devices 2 are arranged at the bottom of the flat plate 1; the push handle 3 is arranged on one side of the flat plate 1;
the water tank 4 is arranged on the upper end face of the flat plate 1, the top of the water tank 4 is provided with a third through hole 43 and a fourth through hole 44, and a pressing plate 45 is arranged in the water tank 4; a sealing ring is arranged between the pressure plate 45 and the inner wall of the water tank 4, and the pressure plate 45 is provided with a fifth through hole 451; a sealing ring is arranged between the wall of the fifth through hole 451 and the water inlet pipe 41; the water outlet pipe 42 is arranged at the bottom of the water tank 4, the water outlet pipe 42 is parallel to the running direction of the cart, the water outlet pipe 42 is provided with a second valve 421, and the water outlet end of the water outlet pipe 42 is connected with the three-way valve 7; the other two interfaces of the three-way valve 7 are respectively connected with the two groups of sprinkling pipes 8; two ends of the sprinkling pipe 8 are provided with sealing rings 83, and a plurality of groups of water outlet holes 81 are arranged on the sprinkling pipe 8; the bottom of the water inlet pipe 41 is inserted into the fifth through hole 451 in a matching manner and extends into the space of the water tank 4 below the pressure plate 45, the upper end of the water inlet pipe 41 passes through the fourth through hole 44 and extends out of the water tank 4, and the water inlet pipe 41 is provided with a first valve 411; the spring 5 is positioned in the water tank 4, one end of the spring 5 is connected with the top of the pressure plate 45, and the other end of the spring 5 is connected with the inner side of the top of the water tank 4;
the middle part of the upper end of the pressure plate 45 is provided with a pull ring 452; one end of the rope 9 is tied on the pull ring 452, the other end of the rope 9 passes through the third through hole 43 and extends out of the water tank 4, and one end of the rope 9 extending out of the water tank 4 is connected with the pulling-up component 6; a pull-up assembly 6 is disposed on top of the water tank 4.
The utility model discloses in, it rises to stimulate rope 9 through drawing the lift subassembly 6, thereby it rises to drive clamp plate 45, it rises to drive inlet tube 41, it rises to stretch out fourth through hole 44 up to inlet tube 41, open first valve 411, from inlet tube 41 toward water tank 4 interior water injection, close first valve 411 after water tank 4 water yield can't pour into again, loosen and draw the lift subassembly 6, clamp plate 45 exerts pressure to the water in water tank 4 under the thrust effect of spring 5 again, when needing to use, only need open the second valve 421 on the outlet pipe 42, water in water tank 4 flows into sprinkler pipe 8 under gravity and 45's pressure of clamp plate, and spout in the apopore 81 of sprinkler pipe 8, spill on the road surface that needs the maintenance, the watering in-process, only need push away the shallow and advance and can carry out even water to the road surface. In the utility model, the sprinkling operation is simple and the efficiency is high; the water is uniformly sprayed, so that the water resource is effectively saved; and the impact force of water to the road surface is very small in the watering process, so that the damage to the road surface in the maintenance process is prevented.
In an alternative embodiment, the lifting assembly 6 includes a supporting plate 61, a supporting rod 62, a first limiting ring 63, a wire spool 64 and a rocker 65;
the supporting plate 61 is arranged at the upper end of the water tank 4, and a plurality of groups of limiting holes 611 are arranged on the supporting plate 61; the limiting hole 611 forms an opening on the end surface of the supporting plate 61 facing the push handle 3 and the end surface of the supporting plate facing away from the push handle 3; the wire spool 64 is provided with a first through hole 641 and a second through hole 642; the first through hole 641 and the second through hole 642 are opened on the end surface of the wire spool 64 facing the support plate 61 and the push handle 3, and the second through hole 642 is opposite to the limit hole 611; one end of the support rod 62 passes through the first through hole 641 and is connected to the support plate 61, and the other end of the support rod 62 is provided with a first limit ring 63; the diameter of the first limiting ring 63 is larger than that of the first through hole 641; one end of the rocker 65 penetrates through the second through hole 642 and the limiting hole 611, and the other end of the rocker 65 is suspended and positioned between the wire spool 64 and the push handle 3; one end of the rope 9 extending out of the water tank 4 is tied on the wire spool 64; rotate rocker 65, it rotates to drive wire reel 64, make rope 9 constantly coil on wire reel 64, thereby pulling clamp plate 45 rises, after clamp plate 45 reached suitable position, stop to rotate rocker 65 and insert spacing hole 611 with rocker 65 in, can prevent that wire reel 64 from reversing under the pulling force of rope 9, effectively fix rope 9, thereby fix clamp plate 45, after the water injection operation, pull out rocker 65 from spacing hole 611, wire reel 64 can the free rotation, can not cause the resistance to the decline of clamp plate 45.
In an alternative embodiment, the wall of the water outlet 81 of the sprinkler tube 8 is provided with a mesh screen 82; the water is dispersed out, and the spraying effect is achieved.
In an alternative embodiment, a plurality of groups of sprinkler pipes 8 are arranged, two adjacent groups of sprinkler pipes 8 are spliced through quick water pipe joints, and the sprinkler pipes 8 are perpendicular to the running direction of the cart; during the use, the quantity of sprinkler pipe 8 is selected according to the road surface width of needs maintenance, reaches the watering maintenance of once only accomplishing a road, has improved operating efficiency greatly.
In an optional embodiment, a plurality of groups of strip-shaped grooves 12 which are parallel to each other are arranged on the lower end surface of the flat plate 1, the rolling device 2 is a roller, two ends of a rotating shaft of the roller are respectively and rotatably connected with the groove walls of the strip-shaped grooves 12, and the roller is perpendicular to the running direction of the trolley; the contact area between the pressure plate and the road surface is increased, and the damage to the road surface caused by overlarge pressure intensity is prevented.
In an alternative embodiment, the upper end surface of the flat plate 1 is provided with a storage box 11, and the storage box 11 is positioned between the water tank 4 and the push handle 3; multiunit watering pipe 8 and water pipe quick-operation joint can place in storing box 11, and it is convenient to take.
In an alternative embodiment, the outer circumferential surface of the rocker 65 away from the support plate 61 is sleeved with an anti-slip silica gel layer 651; preventing slippage.
In an alternative embodiment, a second stop block 652 is arranged on the outer peripheral surface of the rocker 65, and the second stop block 652 is in contact with one end of the wire spool 64 facing the push handle 3; the free rotation of the wire spool 64 caused by the improper insertion of the rocker 65 into the limiting hole 611 is prevented.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (8)
1. The spraying maintenance device for road construction is characterized by comprising a trolley, a water tank (4), a water inlet pipe (41), a water outlet pipe (42), a spring (5), a pulling assembly (6), a three-way valve (7), a sprinkling pipe (8) and a rope (9); the cart comprises a flat plate (1), a rolling device (2) and a push handle (3);
a plurality of groups of rolling devices (2) are arranged at the bottom of the flat plate (1); the push handle (3) is arranged on one side of the flat plate (1);
the water tank (4) is arranged on the upper end face of the flat plate (1), the top of the water tank (4) is provided with a third through hole (43) and a fourth through hole (44), and a pressing plate (45) is arranged in the water tank (4); a sealing ring is arranged between the pressing plate (45) and the inner wall of the water tank (4), and the pressing plate (45) is provided with a fifth through hole (451); a sealing ring is arranged between the wall of the fifth through hole (451) and the water inlet pipe (41); the water outlet pipe (42) is arranged at the bottom of the water tank (4), the water outlet pipe (42) is parallel to the running direction of the cart, a second valve (421) is arranged on the water outlet pipe (42), and the water outlet end of the water outlet pipe (42) is connected with the three-way valve (7); the other two interfaces of the three-way valve (7) are respectively connected with the two groups of sprinkling pipes (8); two ends of the sprinkler pipe (8) are provided with sealing rings (83), and a plurality of groups of water outlet holes (81) are arranged on the sprinkler pipe (8); the bottom of the water inlet pipe (41) is inserted into the fifth through hole (451) in a matched mode and extends into the space of the water tank (4) below the pressing plate (45), the upper end of the water inlet pipe (41) penetrates through the fourth through hole (44) and extends out of the water tank (4), and a first valve (411) is arranged on the water inlet pipe (41); a plurality of groups of springs (5) are positioned in the water tank (4), one ends of the springs (5) are connected with the top of the pressure plate (45), the other ends of the springs (5) are connected with the inner side of the top of the water tank (4), and the springs (5) are always in a compressed state;
a pull ring (452) is arranged in the middle of the upper end of the pressure plate (45); one end of the rope (9) is tied on the pull ring (452), the other end of the rope (9) penetrates through the third through hole (43) to extend out of the water tank (4), and one end of the rope (9) extending out of the water tank (4) is connected with the pulling-up component (6); the pulling-up component (6) is arranged at the top of the water tank (4).
2. The spraying maintenance device for road construction according to claim 1, wherein the pulling-up assembly (6) comprises a support plate (61), a support rod (62), a first limit ring (63), a wire spool (64) and a rocker (65);
the supporting plate (61) is arranged at the upper end of the water tank (4), and a plurality of groups of limiting holes (611) are arranged on the supporting plate (61); the limiting holes (611) are formed in openings on the end face, facing the push handle (3), of the supporting plate (61) and on the end face, facing away from the push handle (3); the wire spool (64) is provided with a first through hole (641) and a second through hole (642); the first through hole (641) and the second through hole (642) are provided with openings on the end surfaces of the wire spool (64) facing the support plate (61) and the pushing handle (3), and the second through hole (642) is opposite to the limiting hole (611); one end of the supporting rod (62) penetrates through the first through hole (641) and is connected with the supporting plate (61), and the other end of the supporting rod (62) is provided with a first limiting ring (63); the diameter of the first limiting ring (63) is larger than that of the first through hole (641); one end of the rocker (65) penetrates through the second through hole (642) and the limiting hole (611), and the other end of the rocker (65) is suspended and located between the wire spool (64) and the push handle (3); one end of the rope (9) extending out of the water tank (4) is tied on the wire spool (64).
3. The spray maintenance device for road construction according to claim 1, wherein the wall of the water outlet hole (81) of the sprinkler pipe (8) is provided with a mesh gauze (82).
4. The spraying maintenance device for road construction according to claim 1, characterized in that the sprinkling pipes (8) are arranged in multiple groups, two adjacent groups of sprinkling pipes (8) are spliced through quick connectors of water pipes, and the sprinkling pipes (8) are perpendicular to the running direction of the cart.
5. The spraying maintenance device for road construction according to claim 1, characterized in that a plurality of sets of parallel strip-shaped grooves (12) are arranged on the lower end surface of the flat plate (1), the rolling device (2) is a roller, the two ends of the rotating shaft of the roller are respectively connected with the groove walls of the strip-shaped grooves (12) in a rotating manner, and the roller is perpendicular to the running direction of the cart.
6. The spraying maintenance device for road construction according to claim 1, characterized in that the upper end surface of the flat plate (1) is provided with a storage box (11), and the storage box (11) is positioned between the water tank (4) and the push handle (3).
7. The spraying maintenance device for road construction according to claim 2, wherein the outer peripheral surface of the rocker (65) away from the support plate (61) is sleeved with an anti-slip silica gel layer (651).
8. The spraying maintenance device for road construction according to claim 2, wherein a second stopper 652 is provided on the outer peripheral surface of the rocker 65, and the second stopper 652 is in contact with one end of the wire spool 64 facing the push handle 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020288901.6U CN211772678U (en) | 2020-03-10 | 2020-03-10 | Road construction is with spraying curing means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020288901.6U CN211772678U (en) | 2020-03-10 | 2020-03-10 | Road construction is with spraying curing means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211772678U true CN211772678U (en) | 2020-10-27 |
Family
ID=72939392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020288901.6U Expired - Fee Related CN211772678U (en) | 2020-03-10 | 2020-03-10 | Road construction is with spraying curing means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211772678U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113338120A (en) * | 2021-06-04 | 2021-09-03 | 千易建设集团有限公司 | Self-water-replenishing road concrete construction system |
| CN113458061A (en) * | 2021-07-30 | 2021-10-01 | 郭彬檑 | Cleaning device for drying refractory material based on water vapor |
-
2020
- 2020-03-10 CN CN202020288901.6U patent/CN211772678U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113338120A (en) * | 2021-06-04 | 2021-09-03 | 千易建设集团有限公司 | Self-water-replenishing road concrete construction system |
| CN113338120B (en) * | 2021-06-04 | 2022-04-08 | 千易建设集团有限公司 | Self-water-replenishing road concrete construction system |
| CN113458061A (en) * | 2021-07-30 | 2021-10-01 | 郭彬檑 | Cleaning device for drying refractory material based on water vapor |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201027 |
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| CF01 | Termination of patent right due to non-payment of annual fee |