CN216156322U - Gap filling device for road and bridge restoration - Google Patents
Gap filling device for road and bridge restoration Download PDFInfo
- Publication number
- CN216156322U CN216156322U CN202121786556.XU CN202121786556U CN216156322U CN 216156322 U CN216156322 U CN 216156322U CN 202121786556 U CN202121786556 U CN 202121786556U CN 216156322 U CN216156322 U CN 216156322U
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- fixedly connected
- bottom plate
- motor
- box
- road
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- 230000007246 mechanism Effects 0.000 claims abstract description 34
- 239000000428 dust Substances 0.000 claims abstract description 27
- 238000003756 stirring Methods 0.000 claims abstract description 19
- 238000007599 discharging Methods 0.000 claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 230000008439 repair process Effects 0.000 claims description 8
- 241000904014 Pappus Species 0.000 claims description 5
- 239000010426 asphalt Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 4
- 244000309464 bull Species 0.000 description 3
- 241000220317 Rosa Species 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000012257 stirred material Substances 0.000 description 1
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Abstract
The utility model discloses a gap filling device for road and bridge restoration in the field of roads and bridges, which comprises a bottom plate, wherein the top of the bottom plate is fixedly connected with a box body, the top of the box body is communicated with a feeding pipe, the surface of the feeding pipe is in threaded connection with a dust cover, the interior of the box body is fixedly connected with a shell, the interior of the shell is fixedly connected with a first motor, the bottom of the first motor is fixedly connected with a stirring rod, the bottom end of the stirring rod extends to the interior of the box body and is fixedly connected with a stirring blade, the bottom of the box body is communicated with a discharging pipe, the bottom end of the discharging pipe extends to the bottom of the bottom plate, the front surface of the discharging pipe is provided with a solenoid valve, the interior of the bottom plate is provided with a cleaning mechanism, and the surface of the cleaning mechanism is provided with a dismounting mechanism. The utility model solves the problems that the existing gap filling device can not clean the garbage and dust in the gap in advance, so that the gap filling effect is poor when asphalt is used for filling the gap, and the gap is generated when the pavement is subsequently damaged again.
Description
Technical Field
The utility model relates to the field of roads and bridges, in particular to a gap filling device for repairing roads and bridges.
Background
The road and bridge generally comprises a plurality of parts such as a roadbed, a pavement, a bridge, tunnel engineering, traffic engineering facilities and the like, after long-time use, gaps often appear on the pavement due to various factors, if the gaps are not filled in time, the road and bridge have great potential safety hazards in use, and therefore, the gaps are required to be repaired by a gap repairing device.
The existing gap filling device cannot clean garbage and dust in the gap in advance, so that the gap filling effect of asphalt is poor when the gap is filled, and the gap appears when the pavement is subsequently damaged again.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a gap filling device for road and bridge repair, which aims to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: a gap filling device for road and bridge restoration comprises a bottom plate, wherein a box body is fixedly connected to the top of the bottom plate, a feeding pipe is communicated with the top of the box body, a dustproof cover is in threaded connection with the surface of the feeding pipe, a shell is fixedly connected to the interior of the box body, a first motor is fixedly connected to the interior of the shell, a stirring rod is fixedly connected to the bottom of the first motor, the bottom end of the stirring rod extends to the interior of the box body and is fixedly connected with a stirring blade, a discharging pipe is communicated with the bottom of the box body, the bottom end of the discharging pipe extends to the bottom of the bottom plate, an electromagnetic valve is arranged on the front face of the discharging pipe, a cleaning mechanism is arranged inside the bottom plate, a disassembling mechanism is arranged on the surface of the cleaning mechanism, and a dust removing mechanism is arranged on the top of the bottom plate;
the cleaning mechanism comprises a placing box, a second motor, a screw rod, a movable block, a transverse plate, a third motor, a rotating rod, a connecting plate and a soft brush, the bottom of the placing box is fixedly connected with the top of the bottom plate, the top of the second motor is fixedly connected with the inner wall of the placing box, one end of the screw rod is fixedly connected with the bottom of the second motor, the other end of the screw rod is movably connected with the bottom of the inner cavity of the placing box through a bearing, the inner part of the movable block is in threaded connection with the surface of the screw rod, one side of the movable block is fixedly connected with one side of the transverse plate, the top of the third motor is fixedly connected with the bottom of the transverse plate, one end of the rotating rod is fixedly connected with the bottom of the third motor, the other end of the rotating rod extends to the bottom of the bottom plate and is fixedly connected with the top of the connecting plate, and the bottom of the connecting plate is movably connected with the top of the soft brush.
As a further scheme of the utility model: the disassembly body includes inserted bar, commentaries on classics board, handle, support frame and bolt, the one end of inserted bar respectively with connecting plate and pappus brush threaded connection, the surface of inserted bar and the inside threaded connection of support frame, the other end of inserted bar extend to the top of support frame and with the bottom fixed connection who changes the board, the top of changeing the board and the bottom fixed connection of handle, the one end of bolt and the top threaded connection who changes the board, the other end of bolt respectively with changeing board and support frame threaded connection.
As a still further scheme of the utility model: the dust removing mechanism comprises a fan, a telescopic pipe, an air suction pipe, a connecting block, an electric telescopic rod, a clamping block, a filter box, a filter screen and an air outlet pipe, wherein the bottom of the fan is fixedly connected with the inside of the bottom plate, the right side of the fan extends to the bottom of the bottom plate through a pipeline and is communicated with one end of the telescopic pipe, the other end of the telescopic pipe is communicated with one end of the air suction pipe through a pipeline, one side of the connecting block is fixedly connected with the top of the air suction pipe, one end of the electric telescopic rod is movably connected with the front of the connecting block through a pin shaft, the other end of the electric telescopic rod is movably connected with the front of the clamping block through a pin shaft, the top of the clamping block is fixedly connected with the top of the bottom plate, the top of the fan extends to the top of the bottom plate through a pipeline and is communicated with the top of the filter box, the bottom of the filter box is fixedly connected with the top of the bottom plate, and the surface of the filter screen is movably connected with the inside of the filter box, one end of the air outlet pipe is communicated with one side of the filter box.
As a still further scheme of the utility model: the bottom of the filter screen is movably connected with a supporting block, and one side of the supporting block is fixedly connected with the inner wall of the filter box.
As a still further scheme of the utility model: the top fixedly connected with toper piece of handle, the surface of toper piece is provided with anti-skidding line.
As a still further scheme of the utility model: the front end and the rear end of the top of the bottom plate are fixedly connected with push rods, and a push handle is fixedly connected between the push rods.
As a still further scheme of the utility model: the opposite side fixedly connected with slider of diaphragm, the inside swing joint of slider has the dead lever, the both ends of dead lever all with place the inner wall fixed connection of case.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the stirring rod and the stirring blade are driven to rotate by the first motor, so that materials in the box can be stirred more uniformly, the cleaning mechanism is utilized, the second motor drives the screw rod to rotate, the screw rod drives the movable block and the transverse plate to move, the height of the third motor can be adjusted, the third motor drives the rotating rod, the connecting plate and the soft hairbrush to rotate, gaps in a road surface can be cleaned conveniently, asphalt is filled conveniently, the soft hairbrush can be replaced conveniently by arranging the dismounting mechanism, and raised dust can be collected by arranging the dust removing mechanism.
2. In the utility model, the bolt is rotated to be separated from the support frame, a worker holds the handle to rotate, the handle drives the rotating plate to rotate, the rotating plate drives the inserting rod to rotate, the inserting rod can be detached and replaced from the soft hairbrush, the fan is started, the fan sucks dust raised by the soft hairbrush into the filter box through the telescopic pipe and the air suction pipe, the dust can be filtered through the filter screen, the filtered gas is discharged out of the filter box through the air outlet pipe, the electric telescopic rod is started, the electric telescopic rod drives the connecting block to move, the connecting block drives the air suction pipe to move, the angle of the air suction pipe can be adjusted, the air suction pipe can conveniently and better suck the dust, the supporting block is arranged inside the filter box and can support the filter screen, the conical block is arranged at the top of the handle, the user can conveniently rotate the handle, and the push rod is arranged at the top of the bottom plate, the staff promotes the pushing hands, can make things convenient for the bottom plate to remove, and the diaphragm drives the surface that the slider is located the dead lever at the lift in-process and removes, can improve the stability of diaphragm.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view of the structure of the present invention;
FIG. 3 is an enlarged view of the structure A in FIG. 2 according to the present invention;
FIG. 4 is an enlarged view of B in FIG. 2.
In the figure: 1. a base plate; 2. a box body; 3. a feed pipe; 4. a dust cover; 5. a housing; 6. a first motor; 7. a stirring rod; 8. stirring blades; 9. a discharge pipe; 10. an electromagnetic valve; 11. a cleaning mechanism; 111. placing a box; 112. a second motor; 113. a screw; 114. a movable block; 115. a transverse plate; 116. a third motor; 117. a rotating rod; 118. a connecting plate; 119. a soft brush; 12. a disassembly mechanism; 121. inserting a rod; 122. rotating the plate; 123. a handle; 124. a support frame; 125. a bolt; 13. a dust removal mechanism; 131. a fan; 132. a telescopic pipe; 133. an air suction pipe; 134. connecting blocks; 135. an electric telescopic rod; 136. a clamping block; 137. a filter box; 138. a filter screen; 139. an air outlet pipe; 14. a support block; 15. a conical block; 16. a push rod; 17. a pushing handle; 18. a slider; 19. and (5) fixing the rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, in the embodiment of the utility model, a gap filling device for road and bridge repair comprises a bottom plate 1, wherein a box body 2 is fixedly connected to the top of the bottom plate 1, a feeding pipe 3 is communicated to the top of the box body 2, a dust cover 4 is connected to the surface of the feeding pipe 3 in a threaded manner, a shell 5 is fixedly connected to the inside of the box body 2, a first motor 6 is fixedly connected to the inside of the shell 5, a stirring rod 7 is fixedly connected to the bottom of the first motor 6, the bottom end of the stirring rod 7 extends to the inside of the box body 2 and is fixedly connected with a stirring blade 8, a discharging pipe 9 is communicated to the bottom of the box body 2, the bottom end of the discharging pipe 9 extends to the bottom of the bottom plate 1, an electromagnetic valve 10 is arranged on the front surface of the discharging pipe 9, a cleaning mechanism 11 is arranged inside the bottom plate 1, a dismounting mechanism 12 is arranged on the surface of the cleaning mechanism 11, and a dust removing mechanism 13 is arranged on the top of the bottom plate 1;
the cleaning mechanism 11 comprises a placing box 111, a second motor 112, a screw 113, a movable block 114, a horizontal plate 115, a third motor 116, a rotating rod 117, a connecting plate 118 and a soft brush 119, place the bottom of case 111 and the top fixed connection of bottom plate 1, the top of second motor 112 and the inner wall fixed connection who places case 111, the one end of screw rod 113 and the bottom fixed connection of second motor 112, the other end of screw rod 113 passes through the bearing and places the bottom swing joint of case 111 inner chamber, the inside of movable block 114 and the surface threaded connection of screw rod 113, one side of movable block 114 and one side fixed connection of diaphragm 115, the top of third motor 116 and the bottom fixed connection of diaphragm 115, the one end of bull stick 117 and the bottom fixed connection of third motor 116, the other end of bull stick 117 extends to the bottom of bottom plate 1 and with the top fixed connection of connecting plate 118, the bottom of connecting plate 118 and the top swing joint of pappus brush 119.
Drive puddler 7 and stirring leaf 8 through first motor 6 and rotate, can make the material stirring in the box 2 more even, utilize and clean mechanism 11, it rotates to drive screw rod 113 through second motor 112, screw rod 113 drives movable block 114 and diaphragm 115 and removes, can adjust the height of third motor 116, drive bull stick 117 through third motor 116, connecting plate 118 and pappus brush 119 rotate, can clean the gap on road surface, make things convenient for filling of pitch, through setting up detaching mechanism 12, can conveniently change pappus brush 119, through setting up dust removal mechanism 13, can collect the dust of kicking up, it can't clean rubbish and dust in the gap in advance to have solved current gap filling device, it is poor to lead to the pitch to appear filling the effect when filling the gap easily, damage the problem that the gap appears once more.
In this embodiment, the detaching mechanism 12 includes an inserting rod 121, a rotating plate 122, a handle 123, a supporting frame 124 and a bolt 125, wherein one end of the inserting rod 121 is respectively connected with the connecting plate 118 and the soft brush 119 by screw threads, the surface of the inserting rod 121 is connected with the inner screw threads of the supporting frame 124, the other end of the inserting rod 121 extends to the top of the supporting frame 124 and is fixedly connected with the bottom of the rotating plate 122, the top of the rotating plate 122 is fixedly connected with the bottom of the handle 123, one end of the bolt 125 is connected with the top of the rotating plate 122 by screw threads, and the other end of the bolt 125 is respectively connected with the rotating plate 122 and the supporting frame 124 by screw threads.
The plug 125 is rotated to be separated from the support frame 124, a worker holds the handle 123 to rotate, the handle 123 drives the rotating plate 122 to rotate, the rotating plate 122 drives the inserting rod 121 to rotate, and the inserting rod 121 can be detached and replaced from the soft brush 119 after being separated from the soft brush 119.
In this embodiment, the dust removing mechanism 13 includes a fan 131, an extension tube 132, an air suction tube 133, a connection block 134, an electric telescopic rod 135, a fixture block 136, a filter box 137, a filter screen 138 and an air outlet tube 139, the bottom of the fan 131 is fixedly connected with the inside of the bottom plate 1, the right side of the fan 131 extends to the bottom of the bottom plate 1 through a pipeline and is communicated with one end of the extension tube 132, the other end of the extension tube 132 is communicated with one end of the air suction tube 133 through a pipeline, one side of the connection block 134 is fixedly connected with the top of the air suction tube 133, one end of the electric telescopic rod 135 is movably connected with the front of the connection block 134 through a pin shaft, the other end of the electric telescopic rod 135 is movably connected with the front of the fixture block 136 through a pin shaft, the top of the fixture block 136 is fixedly connected with the top of the bottom plate 1, the top of the fan 131 extends to the top of the bottom plate 1 through a pipeline and is communicated with the top of the filter box 137, the bottom of the filter box 137 is fixedly connected with the top of the bottom plate 1, the surface of the filter screen 138 is movably connected with the inside of the filter box 137, and one end of the air outlet pipe 139 is communicated with one side of the filter box 137.
Start fan 131, the dust that fan 131 raised soft brush 119 through flexible pipe 132 and aspiration channel 133 absorbs to the rose box 137 in, through filter screen 138, can filter the dust, gas after the filtration passes through outlet duct 139 discharge rose box 137, start electric telescopic handle 135, electric telescopic handle 135 drives connecting block 134 and removes, connecting block 134 drives aspiration channel 133 and removes, can adjust the angle of aspiration channel 133, make things convenient for the better extraction dust of aspiration channel 133.
In this embodiment, the bottom of the filter screen 138 is movably connected with the supporting block 14, and one side of the supporting block 14 is fixedly connected with the inner wall of the filter box 137.
The filter screen 138 can be supported by mounting the support block 14 inside the filter box 137.
In this embodiment, a tapered block 15 is fixedly connected to the top of the handle 123, and the surface of the tapered block 15 is provided with anti-slip threads.
The tapered block 15 is mounted on the top of the handle 123, so that the user can conveniently rotate the handle 123.
In the embodiment, the front end and the rear end of the top of the bottom plate 1 are both fixedly connected with push rods 16, and a push handle 17 is fixedly connected between the two push rods 16.
The push rod 16 is arranged at the top of the bottom plate 1, and the staff pushes the push handle 17, so that the bottom plate 1 can be conveniently moved.
In this embodiment, the other side of the horizontal plate 115 is fixedly connected with a sliding block 18, the inside of the sliding block 18 is movably connected with a fixing rod 19, and both ends of the fixing rod 19 are fixedly connected with the inner wall of the placing box 111.
The transverse plate 115 drives the slider 18 to move on the surface of the fixing rod 19 in the lifting process, so that the stability of the transverse plate 115 can be improved.
The working principle of the utility model is as follows: the second motor 112 is started, the second motor 112 drives the screw rod 113 to rotate, the screw rod 113 drives the movable block 114 to move up and down, the movable block 114 drives the transverse plate 115 to move up and down, the height of the third motor 116 can be adjusted, the third motor 116 is started, the third motor 116 drives the rotating rod 117 to rotate, the rotating rod 117 drives the connecting plate 118 and the soft brush 119 to rotate, gaps on the road surface can be cleaned, filling of asphalt is facilitated, the soft brush 119 can be replaced conveniently through the dismounting mechanism 12, raised dust can be collected through the dust removing mechanism 13, the dust cover 4 is unscrewed, after the gaps are cleaned, a worker feeds materials into the box body 2 through the feeding pipe 3, the first motor 6 is started, the first motor 6 drives the stirring rod 7 and the stirring blades 8 to rotate, stirring of the materials in the box body 2 can be more uniform, the electromagnetic valve 10 is opened, the stirred materials flow into the gaps through the discharging pipe 9 to be filled, the problem of current gap filling device can't clean rubbish and dust in the gap in advance, lead to pitch to fill the effect when filling the gap poor easily, follow-up damage once more of road surface appears the gap is solved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (7)
1. The utility model provides a gap filling device for road and bridge is restoreed, includes bottom plate (1), its characterized in that: the top fixedly connected with box (2) of bottom plate (1), the top intercommunication of box (2) has inlet pipe (3), the surperficial threaded connection of inlet pipe (3) has shield (4), the inside fixedly connected with casing (5) of box (2), the inside fixedly connected with first motor (6) of casing (5), the bottom fixedly connected with puddler (7) of first motor (6), the bottom of puddler (7) extends to the inside of box (2) and fixedly connected with stirring leaf (8), the bottom intercommunication of box (2) has discharging pipe (9), the bottom of discharging pipe (9) extends to the bottom of bottom plate (1), the front of discharging pipe (9) is provided with solenoid valve (10), the inside of bottom plate (1) is provided with cleans mechanism (11), the surface that cleans mechanism (11) is provided with dismantlement mechanism (12), the top of the bottom plate (1) is provided with a dust removal mechanism (13);
the cleaning mechanism (11) comprises a placing box (111), a second motor (112), a screw rod (113), a movable block (114), a transverse plate (115), a third motor (116), a rotating rod (117), a connecting plate (118) and a soft brush (119), the bottom of the placing box (111) is fixedly connected with the top of the bottom plate (1), the top of the second motor (112) is fixedly connected with the inner wall of the placing box (111), one end of the screw rod (113) is fixedly connected with the bottom of the second motor (112), the other end of the screw rod (113) is movably connected with the bottom of the inner cavity of the placing box (111) through a bearing, the inside of the movable block (114) is in threaded connection with the surface of the screw rod (113), one side of the movable block (114) is fixedly connected with one side of the transverse plate (115), the top of the third motor (116) is fixedly connected with the bottom of the transverse plate (115), one end of the rotating rod (117) is fixedly connected with the bottom of the third motor (116), the other end of the rotating rod (117) extends to the bottom of the bottom plate (1) and is fixedly connected with the top of the connecting plate (118), and the bottom of the connecting plate (118) is movably connected with the top of the soft brush (119).
2. A gap filling device for road and bridge repair according to claim 1, wherein: detaching mechanism (12) are including inserted bar (121), commentaries on classics board (122), handle (123), support frame (124) and bolt (125), the one end of inserted bar (121) respectively with connecting plate (118) and pappus brush (119) threaded connection, the surface of inserted bar (121) and the inside threaded connection of support frame (124), the other end of inserted bar (121) extend to the top of support frame (124) and with the bottom fixed connection who changes board (122), the top of changeing board (122) and the bottom fixed connection of handle (123), the one end of bolt (125) and the top threaded connection who changes board (122), the other end of bolt (125) respectively with changeing board (122) and support frame (124) threaded connection.
3. A gap filling device for road and bridge repair according to claim 1, wherein: the dust removal mechanism (13) comprises a fan (131), an extension tube (132), an air suction tube (133), a connecting block (134), an electric telescopic rod (135), a clamping block (136), a filter box (137), a filter screen (138) and an air outlet tube (139), wherein the bottom of the fan (131) is fixedly connected with the inside of the bottom plate (1), the right side of the fan (131) extends to the bottom of the bottom plate (1) through a pipeline and is communicated with one end of the extension tube (132), the other end of the extension tube (132) is communicated with one end of the air suction tube (133) through a pipeline, one side of the connecting block (134) is fixedly connected with the top of the air suction tube (133), one end of the electric telescopic rod (135) is movably connected with the front of the connecting block (134) through a pin shaft, the other end of the electric telescopic rod (135) is movably connected with the front of the clamping block (136) through a pin shaft, and the top of the clamping block (136) is fixedly connected with the top of the bottom plate (1), the top of the fan (131) extends to the top of the bottom plate (1) through a pipeline and is communicated with the top of the filter box (137), the bottom of the filter box (137) is fixedly connected with the top of the bottom plate (1), the surface of the filter screen (138) is movably connected with the inside of the filter box (137), and one end of the air outlet pipe (139) is communicated with one side of the filter box (137).
4. A gap filling device for road and bridge repair according to claim 3, wherein: the bottom of the filter screen (138) is movably connected with a supporting block (14), and one side of the supporting block (14) is fixedly connected with the inner wall of the filter box (137).
5. A gap filling device for road and bridge repair according to claim 2, wherein: the top of the handle (123) is fixedly connected with a conical block (15), and anti-skid grains are arranged on the surface of the conical block (15).
6. A gap filling device for road and bridge repair according to claim 1, wherein: the front end and the rear end of the top of the bottom plate (1) are fixedly connected with push rods (16), and a push handle (17) is fixedly connected between the push rods (16).
7. A gap filling device for road and bridge repair according to claim 1, wherein: the other side fixedly connected with slider (18) of diaphragm (115), the inside swing joint of slider (18) has dead lever (19), the both ends of dead lever (19) all with place the inner wall fixed connection of case (111).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121786556.XU CN216156322U (en) | 2021-08-02 | 2021-08-02 | Gap filling device for road and bridge restoration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121786556.XU CN216156322U (en) | 2021-08-02 | 2021-08-02 | Gap filling device for road and bridge restoration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216156322U true CN216156322U (en) | 2022-04-01 |
Family
ID=80837406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121786556.XU Expired - Fee Related CN216156322U (en) | 2021-08-02 | 2021-08-02 | Gap filling device for road and bridge restoration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216156322U (en) |
-
2021
- 2021-08-02 CN CN202121786556.XU patent/CN216156322U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220401 |