CN220264682U - Pay-off for water conservancy construction - Google Patents
Pay-off for water conservancy construction Download PDFInfo
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- CN220264682U CN220264682U CN202320571557.5U CN202320571557U CN220264682U CN 220264682 U CN220264682 U CN 220264682U CN 202320571557 U CN202320571557 U CN 202320571557U CN 220264682 U CN220264682 U CN 220264682U
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- 238000010276 construction Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000004804 winding Methods 0.000 claims description 26
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 230000000712 assembly Effects 0.000 claims 4
- 238000000429 assembly Methods 0.000 claims 4
- 238000000034 method Methods 0.000 abstract description 6
- 238000005192 partition Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009430 construction management Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
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Abstract
The utility model belongs to the technical field of water conservancy construction, in particular to a paying-off device for water conservancy construction, which comprises a power box, wherein four universal wheels are symmetrically arranged at four corners of the lower surface of the power box respectively, a cable is inserted between a wire outlet wheel a and a wire outlet wheel b, a spring b presses the wire outlet wheel a to move downwards, the position of the wire outlet wheel b is unchanged, the wire outlet wheel a moves downwards to clamp the cable, the cable is prevented from shifting in the paying-off process, meanwhile, the device can be suitable for cables of different types, the cable is placed below a placing wheel, the spring a presses a connecting rod to move downwards, the connecting rod moves downwards to drive the placing wheel to press the cable to move downwards, the cable is pressed into a wire slot, a threaded column is rotated to drive a threaded sleeve c to move rightwards, and the position of the placing wheel is adjusted according to the position of the wire slot, so that the existing paying-off device cannot completely fill the cable into the wire slot, and the problem that people need to manually adjust time and labor are solved.
Description
Technical Field
The utility model belongs to the technical field of water conservancy construction, and particularly relates to a paying-off device for water conservancy construction.
Background
The hydraulic engineering construction is the work of building the hydraulic engineering according to the requirements of engineering structures, quantity, quality, progress, cost and the like proposed by design. Including construction preparation, construction technology, construction management and the like.
The current pay-off for water conservancy construction is many cable drum of carrying, adopts the mode of manual traction to carry out the unwrapping wire, and the epidermis of unwrapping wire in-process cable receives the injury easily, influences the safety in utilization of cable, and simultaneously when carrying the drum, because cable drum is too heavy, lead to the drum to need lifting equipment to rise the height just can install inside current pay-off, and the practicality is low, and can't be with the complete wire casing of filling in of cable, needs people manual adjustment, wastes time and energy.
Disclosure of Invention
To solve the problems set forth in the background art. The utility model provides a paying-off device for water conservancy construction.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a pay-off for water conservancy construction, includes the headstock, four universal wheels are installed to the four corners department of headstock lower surface symmetry respectively, the upper surface of headstock is provided with fixed subassembly, the left and right sides of fixed subassembly upper surface is provided with crane b and crane a respectively, crane a and crane b's inner wall is provided with lifting assembly, lifting assembly's left surface is equipped with the unwrapping wire subassembly, the upper surface of headstock and the lower surface rigid coupling of removing the frame, the inner wall of removing the frame is equipped with and lays the subassembly, the upper surface of laying the subassembly is equipped with clamping assembly.
Preferably, the fixed subassembly includes the screw rod a of rotating with the inner wall right flank of the power case and being connected, the left end of screw rod a passes the bearing of baffle right flank joint and the right-hand member rigid coupling of screw rod b, the lower surface of baffle and the lower surface rigid coupling of inner wall of the power case, the left end of screw rod b passes the left surface of inner wall of the power case and the output shaft rigid coupling of step motor a, step motor a installs the left surface at the power case, the equal threaded connection of the surface of screw rod a and screw rod b has thread bush a, and two the upper surface rigid coupling of thread bush a with the lower surface rigid coupling of crane a and crane b respectively.
Preferably, the lifting assembly comprises two screws c rotationally connected with the lower surfaces of the inner walls of the lifting frame a and the lifting frame b, the top ends of the two screws c respectively penetrate through threaded holes formed in the lower surfaces of the mounting plate a and the mounting plate b to be rotationally connected with the upper surfaces of the inner walls of the lifting frame a and the lifting frame b, the upper surfaces of the lifting frame a and the lifting frame b are respectively provided with a stepping motor b, and the output shafts of the two stepping motors b respectively penetrate through bearings clamped on the upper surfaces of the lifting frame a and the lifting frame b to be fixedly connected with the top ends of the two screws c.
Preferably, the pay-off assembly comprises a stepping motor c arranged on the left side face of the mounting plate a, an output shaft of the stepping motor c penetrates through a bearing clamped on the left side face of the mounting plate a to be fixedly connected with the left side face of the clamping plate a, the right side face of the clamping plate a is movably clamped on the left side face of the winding roll, the right side face of the winding roll is movably clamped on the left side face of the clamping plate b, and the right side face of the clamping plate b is rotatably connected with the left side face of the mounting plate b.
Preferably, the mounting assembly comprises a threaded column rotationally connected with the left side surface of the inner wall of the mounting frame, the right end of the threaded column penetrates through a bearing clamped on the right side surface of the inner wall of the mounting frame to extend to the outside of the mounting frame, a threaded sleeve c is connected to the outer surface of the threaded column in a threaded mode, the lower surface of the threaded sleeve c is fixedly connected with the upper surface of a shrinkage cylinder, the upper surface of the inner wall of the shrinkage cylinder is fixedly connected with the upper surface of a spring a, the lower surface of the spring a is fixedly connected with the upper surface of a connecting rod, and a placing wheel is mounted on the lower surface of the connecting rod.
Preferably, the clamping assembly comprises an outlet frame fixedly connected with the upper surface of the threaded sleeve c, the left side surface and the right side surface of the lower side of the inner wall of the outlet frame are respectively connected with the left side surface and the right side surface of the outlet wheel b in a rotating mode, two sliding grooves are respectively formed in the left side surface and the right side surface of the upper side of the inner wall of the outlet frame, the upper surface of the inner wall of each sliding groove is fixedly connected with the upper surface of a spring b, the lower surface of each spring b is fixedly connected with the upper surface of a sliding block, two opposite surfaces of the sliding blocks are respectively connected with the left side surface and the right side surface of the outlet wheel a in a rotating mode, and the positions of the outlet wheel a and the outlet wheel b correspond to each other.
Preferably, the front and the back of the shrink cylinder are respectively in sliding connection with the front and the back of the inner wall of the limit groove, and the limit groove is formed in the upper surface of the power box.
Compared with the prior art, the utility model has the beneficial effects that:
according to the wire paying-off device, the wire is inserted between the wire outgoing wheel a and the wire outgoing wheel b, the wire outgoing wheel a is pressed by the spring b to move downwards, the position of the wire outgoing wheel b is unchanged, the wire outgoing wheel a moves downwards to clamp the wire, the wire outgoing wheel is prevented from deviating in the wire paying-off process, meanwhile, the device can be suitable for wires of different types, the wire is placed below the placing wheel, the connecting rod is pressed by the spring a to move downwards, the wire is pressed by the placing wheel to move downwards, the wire is pressed into the wire slot by the connecting rod, the position of the wire sleeve c is driven by the rotating threaded column to move rightwards, and the problem that the wire slot cannot be completely filled with the wire by the conventional wire paying-off device, and time and labor are wasted is solved.
According to the utility model, the winding roll is pushed and placed on the upper surface of the power box, the two stepping motors b are reversed to drive the mounting plate a and the mounting plate b to move downwards and are symmetrical to the centers of the left side surface and the right side surface of the winding roll, the stepping motor a drives the lifting frame a and the lifting frame b to be close to each other, the lifting frame a and the lifting frame b are close to each other to drive the clamping plate a and the clamping plate b to be close to each other so as to clamp and fix the winding roll, the two stepping motors b drive the two screws c to rotate, the screws c rotate to drive the mounting plate a, the winding roll and the mounting plate b to move upwards, and the height of the winding roll is adjusted, so that the problems that lifting equipment of an existing device needs to be lifted can be installed inside the existing paying-off device and the practicability is low are solved.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of the present utility model;
FIG. 3 is an enlarged schematic view of the structure at A in the present utility model;
FIG. 4 is a schematic diagram of the structure of the present utility model in front view;
in the figure: 1. a power box; 2. a universal wheel;
and (3) fixing the assembly: 31. a screw a; 32. a partition plate; 33. a screw b; 34. a threaded sleeve a; 35. a stepping motor a;
4. a lifting frame a; 5. a lifting frame b;
lifting assembly: 61. a stepping motor b; 62. a screw c; 63. a mounting plate a; 64. a mounting plate b;
7. a winding roll;
paying-off assembly: 81. a stepping motor c; 82. a clamping plate a; 83. a clamping plate b;
9. a moving rack;
and (3) placing an assembly: 101. a threaded column; 102. a spring a; 103. a shrink cylinder; 104. a connecting rod; 105. placing wheels; 106. a thread bush c;
11. a limit groove; 12. a wire outlet frame;
clamping assembly: 131. a chute; 132. a spring b; 133. a slide block; 134. a wire outlet wheel a; 135. and a wire outlet wheel b.
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.
Examples
Referring to fig. 1-4, the present utility model provides the following technical solutions: the utility model provides a pay-off for water conservancy construction, includes headstock 1, four universal wheels 2 are installed to the four corners department of headstock 1 lower surface symmetry respectively, the upper surface of headstock 1 is provided with fixed subassembly, the left and right sides of fixed subassembly upper surface is provided with crane b5 and crane a4 respectively, crane a4 and crane b 5's inner wall is provided with lifting assembly, lifting assembly's left surface is equipped with unwrapping wire subassembly, the upper surface of headstock 1 and the lower surface rigid coupling of movable frame 9, the inner wall of movable frame 9 is equipped with and lays the subassembly, the upper surface of laying the subassembly is equipped with clamping assembly.
Specifically, the fixing assembly comprises a screw rod a31 rotationally connected with the right side surface of the inner wall of the power box 1, the left end of the screw rod a31 passes through a bearing clamped with the right side surface of a partition plate 32 to be fixedly connected with the right end of a screw rod b33, the lower surface of the partition plate 32 is fixedly connected with the lower surface of the inner wall of the power box 1, the left end of the screw rod b33 passes through the left side surface of the inner wall of the power box 1 to be fixedly connected with an output shaft of a stepping motor a35, the stepping motor a35 is arranged on the left side surface of the power box 1, the outer surfaces of the screw rod a31 and the screw rod b33 are respectively in threaded connection with a threaded sleeve a34, and the upper surfaces of the two threaded sleeves a34 are respectively fixedly connected with the lower surfaces of a lifting frame a4 and a lifting frame b 5;
the stepping motor a35 is started through an external power supply, the stepping motor a35 starts to drive the screw a31 and the screw b33 to rotate, and as the screw a31 and the screw b33 are opposite in screw thread direction, the screw a31 and the screw b33 rotate to drive the two screw sleeves a34 to be close to each other, the two screw sleeves a34 are close to each other to drive the lifting frame a4 and the lifting frame b5 to be close to each other, and the lifting frame a4 and the lifting frame b5 are close to each other to drive the clamping plate a82 and the clamping plate b83 to be close to each other so as to clamp and fix the winding drum 7.
Specifically, the lifting assembly comprises two screw rods c62 rotationally connected with the lower surfaces of the inner walls of the lifting frame a4 and the lifting frame b5, the top ends of the two screw rods c62 respectively penetrate through threaded holes formed in the lower surfaces of the mounting plate a63 and the mounting plate b64 to be rotationally connected with the upper surfaces of the inner walls of the lifting frame a4 and the lifting frame b5, the upper surfaces of the lifting frame a4 and the lifting frame b5 are respectively provided with a stepping motor b61, and the output shafts of the two stepping motors b61 respectively penetrate through bearings clamped with the upper surfaces of the lifting frame a4 and the lifting frame b5 to be fixedly connected with the top ends of the two screw rods c 62;
by starting the stepping motors b61 through an external power supply, the two stepping motors b61 are started to drive the two screws c62 to rotate, the screws c62 rotate to drive the mounting plate a63, the winding roll 7 and the mounting plate b64 to move upwards, and the height of the winding roll 7 is adjusted.
Specifically, the pay-off assembly comprises a stepping motor c81 mounted on the left side surface of a mounting plate a63, an output shaft of the stepping motor c81 penetrates through a bearing clamped on the left side surface of the mounting plate a63 to be fixedly connected with the left side surface of a clamping plate a82, the right side surface of the clamping plate a82 is movably clamped on the left side surface of a winding roll 7, the right side surface of the winding roll 7 is movably clamped on the left side surface of a clamping plate b83, and the right side surface of the clamping plate b83 is rotatably connected with the left side surface of a mounting plate b 64;
the stepping motor c81 is started through an external power supply, the stepping motor c81 starts to drive the clamping plate a82 to rotate, the clamping plate a82 rotates to drive the winding roll 7 and the clamping plate b83 to rotate, then the cable on the surface of the winding roll 7 is automatically paid out, and the speed of the automatic paying-out of the winding roll 7 is controlled through controlling the rotating speed of the stepping motor c 81.
Specifically, the placement component comprises a threaded column 101 rotationally connected with the left side surface of the inner wall of the placement frame, the right end of the threaded column 101 penetrates through a bearing clamped on the right side surface of the inner wall of the placement frame to extend to the outside of the placement frame, a threaded sleeve c106 is connected to the outer surface of the threaded column 101 in a threaded manner, the lower surface of the threaded sleeve c106 is fixedly connected with the upper surface of a shrinkage cylinder 103, the upper surface of the inner wall of the shrinkage cylinder 103 is fixedly connected with the upper surface of a spring a102, the lower surface of the spring a102 is fixedly connected with the upper surface of a connecting rod 104, and a placement wheel 105 is arranged on the lower surface of the connecting rod 104;
the cable is placed below the placement wheel 105, the spring a102 presses the connecting rod 104 to move downwards, the connecting rod 104 moves downwards to drive the placement wheel 105 to press the cable to move downwards, then the cable is pressed into the wire slot, the threaded sleeve c106 is driven to move rightwards by rotating the threaded column 101, and then the position of the placement wheel 105 is adjusted according to the position of the wire slot.
Specifically, the clamping assembly comprises an outlet frame 12 fixedly connected with the upper surface of a threaded sleeve c106, the left side surface and the right side surface of the lower side of the inner wall of the outlet frame 12 are respectively and rotatably connected with the left side surface and the right side surface of an outlet wheel b135, two sliding grooves 131 are respectively formed in the left side surface and the right side surface of the upper side of the inner wall of the outlet frame 12, the upper surface of the inner wall of each sliding groove 131 is fixedly connected with the upper surface of a spring b132, the lower surface of each spring b132 is fixedly connected with the upper surface of a sliding block 133, one surface of each sliding block 133, which is opposite, is respectively and rotatably connected with the left side surface and the right side surface of an outlet wheel a134, and the positions of the outlet wheel a134 and the outlet wheel b135 correspond to each other;
the cable is inserted between the wire outlet wheel a134 and the wire outlet wheel b135, the spring b132 presses the slider 133 to move downwards, the slider 133 moves upwards to drive the wire outlet wheel a134 to move downwards, the position of the wire outlet wheel b135 is unchanged, the wire outlet wheel a134 moves downwards to clamp the cable, the cable is prevented from being offset in the paying-off process, and meanwhile the device can be suitable for cables of different types through the spring b 132.
The working principle and the using flow of the utility model are as follows:
the utility model, when in use;
pushing the winding roll 7 to be placed on the upper surface of the power box 1, reversing the two stepping motors b61 to drive the two screws c62 to rotate, rotating the screws c62 to drive the mounting plates a63 and b64 to move downwards, and centering symmetrically with the left side surface and the right side surface of the winding roll 7, starting the stepping motors a35 to drive the screws a31 and b33 to rotate, and rotating the screws a31 and b33 to drive the two threaded sleeves a34 to be close to each other because the threaded directions of the screws a31 and b33 are opposite, wherein the two threaded sleeves a34 to be close to each other drive the lifting frame a4 and the lifting frame b5 to be close to each other, and the lifting frame a4 and the lifting frame b5 to be close to each other to drive the clamping plates a82 and the clamping plates b83 to be close to each other to clamp and fix the winding roll 7;
the two stepping motors b61 are started to drive the two screws c62 to rotate, the screws c62 rotate to drive the mounting plate a63, the winding drum 7 and the mounting plate b64 to move upwards, the height of the winding drum 7 is adjusted, the stepping motor c81 is started to drive the clamping plate a82 to rotate, the clamping plate a82 rotates to drive the winding drum 7 and the clamping plate b83 to rotate, the cables on the surface of the winding drum 7 are automatically paid out, and the automatic paying-out speed of the winding drum 7 is controlled by controlling the rotating speed of the stepping motor c 81;
the cable is inserted between the wire outlet wheel a134 and the wire outlet wheel b135, the spring b132 presses the slider 133 to move downwards, the slider 133 moves upwards to drive the wire outlet wheel a134 to move downwards, the position of the wire outlet wheel b135 is unchanged, the wire outlet wheel a134 moves downwards to clamp the cable, the cable is prevented from being offset in the paying-off process, the cable is placed below the placing wheel 105, the spring a102 presses the connecting rod 104 to move downwards, the connecting rod 104 moves downwards to drive the placing wheel 105 to press the cable to move downwards, the cable is pressed into the wire slot, the threaded sleeve c106 is driven to move rightwards by rotating the threaded column 101, and the position of the placing wheel 105 is adjusted according to the position of the wire slot.
The circuit, the electronic components and the modules are all in the prior art, and can be completely realized by a person skilled in the art, and needless to say, the protection of the utility model does not relate to the improvement of software and a method.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. Pay-off for water conservancy construction, including headstock (1), its characterized in that: four universal wheels (2) are symmetrically installed at four corners of the lower surface of the power box (1), a fixing assembly is arranged on the upper surface of the power box (1), a lifting frame b (5) and a lifting frame a (4) are arranged on the left side and the right side of the upper surface of the fixing assembly respectively, lifting assemblies are arranged on the inner walls of the lifting frame a (4) and the lifting frame b (5), paying-off assemblies are arranged on the left side surfaces of the lifting assemblies, the upper surface of the power box (1) is fixedly connected with the lower surface of a movable frame (9), a placing assembly is arranged on the inner wall of the movable frame (9), and clamping assemblies are arranged on the upper surface of the placing assembly.
2. The water conservancy construction pay-off device according to claim 1, wherein: the fixed subassembly includes screw rod a (31) of being connected with the right flank of power case (1) inner wall rotation, the bearing of baffle (32) right flank joint is passed to the left end of screw rod a (31) and the right-hand member rigid coupling of screw rod b (33), the lower surface of baffle (32) and the lower surface rigid coupling of power case (1) inner wall, the left end of screw rod b (33) passes the left surface of power case (1) inner wall and the output shaft rigid coupling of step motor a (35), step motor a (35) are installed in the left surface of power case (1), the equal threaded connection of the surface of screw rod a (31) and screw rod b (33) has thread bush a (34), and two the upper surface of thread bush a (34) respectively with crane a (4) and crane b (5) lower surface rigid coupling.
3. The water conservancy construction pay-off device according to claim 1, wherein: the lifting assembly comprises two threaded rods c (62) rotationally connected with the lower surfaces of the inner walls of the lifting frames a (4) and b (5), the top ends of the two threaded rods c (62) respectively penetrate through threaded holes formed in the lower surfaces of the mounting plates a (63) and b (64) and are rotationally connected with the upper surfaces of the inner walls of the lifting frames a (4) and b (5), stepping motors b (61) are respectively mounted on the upper surfaces of the lifting frames a (4) and b (5), and output shafts of the two stepping motors b (61) respectively penetrate through bearings clamped on the upper surfaces of the lifting frames a (4) and b (5) and are fixedly connected with the top ends of the two threaded rods c (62).
4. The water conservancy construction pay-off device according to claim 1, wherein: the pay-off assembly comprises a stepping motor c (81) arranged on the left side face of a mounting plate a (63), an output shaft of the stepping motor c (81) penetrates through a bearing clamped on the left side face of the mounting plate a (63) to be fixedly connected with the left side face of a clamping plate a (82), the right side face of the clamping plate a (82) is movably clamped on the left side face of a winding roll (7), the right side face of the winding roll (7) is movably clamped on the left side face of a clamping plate b (83), and the right side face of the clamping plate b (83) is rotatably connected with the left side face of the mounting plate b (64).
5. The water conservancy construction pay-off device according to claim 1, wherein: the mounting assembly comprises a threaded column (101) rotationally connected with the left side face of the inner wall of the mounting frame, the right end of the threaded column (101) penetrates through a bearing clamped on the right side face of the inner wall of the mounting frame to extend to the outside of the mounting frame, a threaded sleeve c (106) is connected to the outer surface of the threaded column (101) in a threaded mode, the lower surface of the threaded sleeve c (106) is fixedly connected with the upper surface of a shrinkage cylinder (103), the upper surface of the inner wall of the shrinkage cylinder (103) is fixedly connected with the upper surface of a spring a (102), the lower surface of the spring a (102) is fixedly connected with the upper surface of a connecting rod (104), and a placing wheel (105) is mounted on the lower surface of the connecting rod (104).
6. The water conservancy construction pay-off device according to claim 1, wherein: the clamping assembly comprises an outgoing line frame (12) fixedly connected with the upper surface of a threaded sleeve c (106), the left side surface and the right side surface of the lower side of the inner wall of the outgoing line frame (12) are respectively and rotatably connected with the left side surface and the right side surface of an outgoing line wheel b (135), two sliding grooves (131) are respectively formed in the left side surface and the right side surface of the upper side of the inner wall of the outgoing line frame (12), the upper surface of the inner wall of each sliding groove (131) is fixedly connected with the upper surface of a spring b (132), the lower surface of each spring b (132) is fixedly connected with the upper surface of a sliding block (133), the opposite surfaces of the two sliding blocks (133) are respectively and rotatably connected with the left side surface and the right side surface of an outgoing line wheel a (134), and the positions of the outgoing line wheel a (134) and the outgoing line wheel b (135) are corresponding.
7. The water conservancy construction pay-off device according to claim 5, wherein: the front and the back of the shrink cylinder (103) are respectively in sliding connection with the front and the back of the inner wall of the limit groove (11), and the limit groove (11) is arranged on the upper surface of the power box (1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2022211965889 | 2022-05-18 | ||
| CN202221196588 | 2022-05-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220264682U true CN220264682U (en) | 2023-12-29 |
Family
ID=89303175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320571557.5U Active CN220264682U (en) | 2022-05-18 | 2023-03-22 | Pay-off for water conservancy construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220264682U (en) |
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2023
- 2023-03-22 CN CN202320571557.5U patent/CN220264682U/en active Active
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