CN211543367U - Covering device for carriage of self-discharging automobile - Google Patents
Covering device for carriage of self-discharging automobile Download PDFInfo
- Publication number
- CN211543367U CN211543367U CN201921845515.6U CN201921845515U CN211543367U CN 211543367 U CN211543367 U CN 211543367U CN 201921845515 U CN201921845515 U CN 201921845515U CN 211543367 U CN211543367 U CN 211543367U
- Authority
- CN
- China
- Prior art keywords
- carriage
- tarpaulin
- sides
- slide
- connecting plate
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Power-Operated Mechanisms For Wings (AREA)
Abstract
A covering device for a self-discharging automobile compartment belongs to the technical field of automobile and vehicle corollary equipment and is used for automatically covering the automobile compartment. The technical scheme is as follows: slide rails are respectively installed on two sides of the carriage, a plurality of tarpaulin supporting rods are located above the carriage, a sliding block is installed at the lower end of each tarpaulin supporting rod, the tarpaulin supporting rods can slide along the slide rails through the sliding blocks, the tarpaulin covers the tarpaulin supporting rods, and the tarpaulin supporting rods can drive the tarpaulin to cover the carriage. The motor, the transmission gear and the rotating shaft are installed at the front end of the carriage, the chain wheels and the chains are installed on two sides of the carriage, the motor drives the chains to move through the transmission mechanism, the chains drive the sliding blocks connected with the lower ends of the tarpaulin supporting rods to move in the sliding rails, and therefore the operation of covering the carriage is achieved. The utility model discloses can replace the manual work to cover the automobile carriage, eliminate the potential safety hazard that the artifical carriage that covers exists and waste time, hard, cover drawback such as cloth fragile, the dust suppression effect is obvious to save time, improved work efficiency.
Description
Technical Field
The utility model relates to a device that covers is carried out in self-discharging automobile carriage belongs to the supporting equipment technical field of automobile vehicle.
Background
In the iron and steel enterprise, various materials are needed in the production process, the various materials need to be stored when transported to a factory, and the materials need to be transported to the production field when needed to be used, the turnover process is completed by automobiles, and therefore more automobiles are needed to transport the materials every day in the enterprise. In the process of transporting automobiles, because some materials have tiny particles and low moisture, the materials are easy to fly upwards during the transportation of the automobiles, which not only causes material loss, but also causes pollution to the atmospheric environment. At present, the simplest method for inhibiting the material dust emission is to manually cover the carriage, and the manual covering has a plurality of defects: (1) because the carriage is higher, personnel need frequently climb to the carriage top and operate, have the potential safety hazard of falling. (2) The time for manually covering a carriage is 10-15 minutes, and when unloading, personnel need to lift the tarpaulin on the top of the carriage, so that the whole process is long in time and the operation efficiency is low. (3) The manual covering is laborious. (4) The tarpaulin is easy to be damaged and the cost is increased. In order to solve the problem of manually covering the carriage, it is necessary to develop a device for automatically covering the carriage.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a device is covered to provide a self-discharging automobile carriage covers, this kind of cover device can replace the manual work to cover the automobile carriage, eliminates the potential safety hazard that the manual work covered the carriage and wastes time, energy, covers drawbacks such as easy damage of cloth, improves work efficiency.
The technical scheme for solving the technical problems is as follows:
a tarpaulin device for a carriage of a self-discharging automobile comprises a motor, a driving straight gear, a driven straight gear, fixed bearings, a rotating shaft, a driving front chain wheel, a driven rear chain wheel, a sliding rail, a sliding block, chains and a tarpaulin supporting rod, wherein the motor is horizontally fixed at the middle position of the upper edge of the front end of the carriage through bolts, a motor shaft is connected with the driving straight gear, the driving straight gear is meshed with the driven straight gear, the fixed bearings are respectively installed at the two sides of the upper edge of the front end of the carriage, the rotating shaft is installed between the two fixed bearings, the driven straight gear is installed on the rotating shaft, the two ends of the rotating shaft respectively penetrate through the two fixed bearings and are positioned at the outer side of the carriage, the driving front chain wheel is respectively installed at the two ends of the rotating shaft, chain wheel shafts of the two driven rear chain wheels 7 are, two slide rails are horizontal installation respectively in the carriage both sides, two slide rails are located the top of two chains, a plurality of tarpaulin bracing pieces are arranged along the length direction order of slide rail, the tarpaulin bracing piece is upright N shape, the both ends of every tarpaulin bracing piece are link block respectively, the slider at every tarpaulin bracing piece both ends inlays respectively in the slide rail of carriage both sides, the slider is sliding fit with the slide rail, the tarpaulin bracing piece that is located the carriage foremost is fixed with the carriage, the slider that is located the tarpaulin bracing piece both ends of carriage rearmost end is connected through fixed buckle with the chain of carriage both sides respectively, the tarpaulin covers on the tarpaulin bracing piece, the tarpaulin is connected by solid fixed ring with the tarpaulin bracing piece, the motor is connected with the controller, the controller is installed in auttombi.
Above-mentioned covering device in dump truck carriage, two slide rails comprise top surface, side and bottom surface respectively, and the top surface is rectangular steel sheet, and two sides have welded the top surface both sides respectively perpendicularly, and the bottom surface is two rectangular steel sheets, and two bottom surface rectangular steel sheets weld respectively in the inboard of two sides, and the rectangular steel sheet of bottom surface is parallel with the top surface, and is gapped between the rectangular steel sheet of two bottom surfaces.
Above-mentioned tarpaulin device in self-discharging car carriage, the slider comprises two bearings and a axostylus axostyle, and the axostylus axostyle suit is in the inner circle of two bearings, and two bearings inlay respectively on the rectangular shape steel sheet of slide rail bottom surface both sides, and the clearance of axostylus axostyle and slide rail bottom surface is relative, and the axostylus axostyle is connected with the tarpaulin bracing piece through coupling assembling.
Above-mentioned tarpaulin device in self-discharging automobile carriage, coupling assembling includes axostylus axostyle connecting plate and bracing piece connecting plate, and the axostylus axostyle connecting plate is placed perpendicularly, and welded connection in the middle of the upper end of axostylus axostyle connecting plate and the axostylus axostyle, the lower extreme of axostylus axostyle connecting plate passing the clearance of slide rail bottom surface and bracing piece connecting plate are connected through the bolt, and the bracing piece connecting plate is the steel sheet of buckling.
According to the tarpaulin device for the carriage of the dump truck, the fixing buckle is formed by processing a thin steel plate and is rectangular, three pore channels are uniformly drilled on the fixing buckle, and the sliding block and the chain are fixedly connected together through the bolt and the nut.
The utility model has the advantages that:
the utility model discloses installed the slide rail respectively in carriage both sides, a plurality of tarpaulin bracing pieces are located the carriage top, and the slider is installed to the lower extreme of tarpaulin bracing piece, and the tarpaulin bracing piece passes through the slider and can slide along the slide rail, and the tarpaulin covers on the tarpaulin bracing piece, and the tarpaulin bracing piece can drive the tarpaulin and cover the carriage. The motor, the transmission gear and the rotating shaft are installed at the front end of the carriage, the chain wheels and the chains are installed on two sides of the carriage, the motor drives the chains to move through the transmission mechanism, the chains drive the sliding blocks connected with the lower ends of the tarpaulin supporting rods to move in the sliding rails, and therefore the operation of covering the carriage is achieved.
The utility model has the advantages of it is following:
(1) the operation is simple. The whole set of facilities can realize the opening and closing functions of the tarpaulin only by operating a control switch in a cab by a driver, and the opening and closing time is finished within 30 seconds.
(2) Is safe and reliable. The problem that personnel frequently get on and off the carriage is reduced, and the safety of personnel is guaranteed.
(3) Saves labor. The direct manual operation is avoided, and the manual labor is saved.
(4) The using period of the tarpaulin is prolonged. The tarpaulin does not need to be frequently folded, is not easy to be damaged and has long service life.
(5) The sealing performance is better. Because the upside of the carriage is wholly covered, the smoke and dust is prevented from overflowing.
(6) The maintenance is convenient and fast. The device is damaged in use, simple in maintenance process, small in maintenance amount, capable of realizing rapid repair and low in cost.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a side view of FIG. 1;
fig. 3 is a top view of fig. 1.
The figures are labeled as follows: the device comprises a motor 1, a driving straight gear 2, a driven straight gear 3, a fixed bearing 4, a rotating shaft 5, a driving front chain wheel 6, a driven rear chain wheel 7, a sliding rail 8, a sliding block 9, a chain 10, a tarpaulin supporting rod 11, a controller 12, a fixed buckle 13, a connecting assembly 14, a bearing 15, a shaft rod 16, a shaft rod connecting plate 17, a supporting rod connecting plate 18 and a carriage 19.
Detailed Description
The utility model discloses constitute by motor 1, driving spur gear 2, driven spur gear 3, fixing bearing 4, axis of rotation 5, drive front sprocket 6, driven rear sprocket 7, slide rail 8, slider 9, chain 10, tarpaulin bracing piece 11, controller 12, fixed buckle 13, coupling assembling 14.
The utility model has the overall structure that:
The front end of the carriage 19 is provided with a motor 1, a transmission gear and a rotating shaft 5, two sides of the carriage 19 are provided with a chain wheel and a chain 10, the motor 1 drives the chain 10 to move through a transmission mechanism, and the chain 10 drives a sliding block 9 connected with the lower end of a tarpaulin supporting rod 11 to move in a sliding rail 8, so that the operation of covering the carriage 19 is realized.
The figure shows that a motor 1 is horizontally fixed at the middle position of the upper edge of the front end of a carriage 19 through a bolt, a motor shaft is connected with a driving straight gear 2, the driving straight gear 2 is meshed with a driven straight gear 3, two sides of the upper edge of the front end of the carriage 19 are respectively provided with a fixed bearing 4, a rotating shaft 5 is arranged between the two fixed bearings 4, and the driven straight gear 3 is arranged on the rotating shaft 5. The motor 1 drives the rotating shaft 5 to rotate through the driving straight gear 2 and the driven straight gear 3. The motor 1 is connected with a controller 12, and the controller 12 is installed in an automobile cab.
The two ends of the rotating shaft 5 are respectively penetrated through two fixed bearings 4 to be positioned outside the carriage 19, the two ends of the rotating shaft 5 are respectively provided with a driving front chain wheel 6, the chain wheel shafts of two driven rear chain wheels 7 are respectively fixed on the two sides of the upper edge of the rear end of the carriage 19 through shaft sleeves and shaft seats by bolts, and two chains 10 respectively encircle the driving front chain wheel 6 and the driven rear chain wheels 7 on the two sides of the carriage 19. When the rotating shaft 5 is driven by the motor 1 to rotate, the driving front chain wheel 6, the driven rear chain wheel 7 and the chain 10 are driven to rotate together.
Two slide rails 8 are horizontally arranged on two sides of the carriage 19, and the two slide rails 8 are positioned above the two chains 10. The slide rail 8 is used for enabling the slide block 9 to slide in the slide rail 8, so that the slide block 9 can drive the tarpaulin support rod 11 to move. Two slide rails 8 comprise top surface, side and bottom surface respectively, and the top surface is rectangular steel sheet, and two sides have welded the top surface both sides respectively perpendicularly, and the bottom surface is two rectangular steel sheets, and two bottom surface rectangular steel sheets weld respectively in the inboard of two sides, and the rectangular steel sheet of bottom surface is parallel with the top surface, and is gapped between the rectangular steel sheet of two bottom surfaces. When the tarpaulin support rod is used, the sliding block 9 is located inside the sliding rail 8, the bottom of the sliding block 9 is connected with the tarpaulin support rod 11 through the connecting component 14, and the connecting component 14 passes through the gap on the bottom surface of the sliding rail 8.
The slide rail 8 adopts the mode that the gap for connecting the slide block 9 with the tarpaulin support rod 11 is placed on the bottom surface of the slide rail 8 instead of being directly opened on the top surface of the slide rail 8, so that the upper part of the slide block 9 is directly connected with the tarpaulin support rod 11, and although the structure of the connecting component 14 is slightly complicated, the problem that the slide block 9 cannot slide smoothly due to the fact that materials fall into the slide rail 8 from the gap on the top surface of the slide rail 8 can be avoided.
The figure shows that the slide block 9 is composed of two bearings 15 and a shaft lever 16, the shaft lever 16 is sleeved in the inner rings of the two bearings 15, the two bearings 15 are respectively embedded on the long-strip-shaped steel plates on the two sides of the bottom surface of the slide rail 8, the shaft lever 16 is opposite to the gap on the bottom surface of the slide rail 8, and the shaft lever 16 is connected with the tarpaulin support rod 11 through a connecting component 14.
The connecting assembly 14 is shown to include a shaft connecting plate 17 and a support rod connecting plate 18, the shaft connecting plate 17 is vertically disposed, the upper end of the shaft connecting plate 17 is welded to the middle of the shaft 16, and the lower end of the shaft connecting plate 17 passes through the gap on the bottom surface of the slide rail 8 and is connected to the lower portion of the support rod connecting plate 18 through a bolt. The support rod connecting plate 18 is a bent steel plate, the lower part of the support rod connecting plate 18 is a transverse U-shaped plate, the upper part of the support connecting plate 18 is a vertical connecting plate, one end of a lower plate of the U-shaped plate is connected with the shaft rod connecting plate 17, one end of an upper plate of the U-shaped plate is connected with the vertical connecting plate in a welding mode, and the vertical connecting plate is connected with the lower end of the tarpaulin support rod 11 through a bolt.
The drawing shows that a plurality of tarpaulin support rods 11 are sequentially arranged along the length direction of the slide rail 8, the tarpaulin support rods 11 are vertical N-shaped, two ends of each tarpaulin support rod 11 are respectively connected with a slide block 9, the slide blocks 9 at two ends of each tarpaulin support rod 11 are respectively embedded in the slide rails 8 at two sides of the carriage 19, and the slide blocks 9 can drive the tarpaulin support rods 11 to slide in the slide rails 8. The tarpaulin support rod 11 positioned at the foremost end of the carriage 19 is fixed with the carriage 19, the sliding blocks 9 positioned at the two ends of the tarpaulin support rod 11 positioned at the rearmost end of the carriage 19 are respectively connected with the chains 10 at the two sides of the carriage 19 through the fixed buckles 13, and the sliding blocks 9 can be driven to move when the chains 10 move. The tarpaulin covers the tarpaulin support rod 11, and the tarpaulin is connected with the tarpaulin support rod 11 through a fixing ring.
The fixing buckle 13 is shown to be made of thin steel plate and has a rectangular shape, three holes are uniformly drilled on the fixing buckle, and the sliding block 9 and the chain 10 are fixedly connected together through a bolt and nut fixing mode.
The working process of the utility model is as follows:
under the condition that the automobile is not loaded, the tarpaulin supporting rods 11 are all folded at the front end of the carriage 19, and the tarpaulin is in a folded state.
After the automobile is loaded with materials, a driver starts the motor 1 through the controller 12 in a cab, and the motor 1 drives the chain 10 to move backwards through the driving straight gear 2, the driven straight gear 3, the rotating shaft 5, the driving front chain wheel 6 and the driven rear chain wheel 7. The chain 10 drives the slide block 9 at the rearmost end in the slide rail 8 to move towards the rear part of the carriage 19 through the fixed buckle 13, the tarpaulin supporting rods 11 connected to the slide block 9 move along with the slide block, the tarpaulin drives the plurality of tarpaulin supporting rods 11 at the back and the slide block 9 below to move towards the rear part of the carriage 19 gradually until the slide block 9 at the rearmost end moves to the rearmost position, the motor 1 stops rotating, and the tarpaulin covers the whole carriage 19.
When the materials need to be unloaded, the motor 1 is started reversely, and the motor 1 drives the chain 10 to move forwards through the transmission part. The chain 10 drives the slide block 9 at the rearmost end in the slide rail 8 to move towards the front part of the carriage 19 through the fixed buckle 13, the slide block 9 pushes the slide block 9 at the front part to move forwards when moving forwards, so that the slide blocks 9 at the front part are pushed to move forwards one by one, the tarpaulin support rods 11 connected to all the slide blocks 9 move forwards along with the slide blocks, the tarpaulin moves along with the slide blocks until the slide block 9 at the rearmost end moves to the foremost position, all the slide blocks 9 and the tarpaulin support rods 11 are furled at the front end of the carriage 19, the tarpaulin is folded and furled, the motor 1 stops rotating, the tarpaulin is furled.
The utility model discloses an embodiment as follows:
the motor 1 is of the type: 24V, 800W planetary motor
The diameter of the driving straight gear 2 is 80 mm;
the diameter of the driven straight gear 3 is 90 mm;
the fixed bearing 4 is 6205; diameter of 50 mm
The diameter of the rotating shaft 5 is 20mm, and the length is: 2420 mm;
the diameter of the driving front chain wheel 6 is 90 mm;
the diameter of the driven rear chain wheel 7 is 90 mm;
the length of the slide rail 8 is: 5860mm, 60mm width and 40mm height;
the type of a bearing 15 of the sliding block 9 is 6201, the diameter of the shaft lever 16 is 10mm, and the length of the shaft lever is 55 mm;
the length of the chain 10 is 11720 mm;
the diameter of the tarpaulin supporting rod 11 is 25mm, the height of the N type is 400mm, and the width is 2420 mm.
Claims (5)
1. The utility model provides a straw mat of self-discharging car carriage covers device which characterized in that: the novel straw mat comprises a motor (1), a driving straight gear (2), a driven straight gear (3), fixed bearings (4), a rotating shaft (5), a driving front chain wheel (6), a driven rear chain wheel (7), a slide rail (8), a slide block (9), a chain (10) and a tarpaulin support rod (11), wherein the motor (1) is horizontally fixed at the middle position of the upper edge of the front end of a carriage (19) through bolts, a motor shaft is connected with the driving straight gear (2), the driving straight gear (2) is meshed with the driven straight gear (3), the fixed bearings (4) are respectively installed on two sides of the upper edge of the front end of the carriage (19), the rotating shaft (5) is installed between the two fixed bearings (4), the driven straight gear (3) is installed on the rotating shaft (5), two ends of the rotating shaft (5) respectively penetrate through the two fixed bearings (4) and are positioned outside the carriage (19), the driving front chain wheel (6), sprocket shafts of two driven rear sprockets (7) are respectively fixed on two sides of the upper edge of the rear end of a carriage (19), two chains (10) respectively surround a driving front sprocket (6) and a driven rear sprocket (7) on two sides of the carriage (19), two slide rails (8) are respectively horizontally arranged on two sides of the carriage (19), the two slide rails (8) are positioned above the two chains (10), a plurality of tarpaulin support rods (11) are sequentially arranged along the length direction of the slide rails (8), the tarpaulin support rods (11) are vertical N-shaped, two ends of each tarpaulin support rod (11) are respectively connected with a slide block (9), the slide blocks (9) at two ends of each tarpaulin support rod (11) are respectively embedded in the slide rails (8) on two sides of the carriage (19), the slide blocks (9) are in sliding fit with the slide rails (8), the tarpaulin support rod (11) positioned at the foremost end of the carriage (19) is fixed with the carriage (19, the sliding blocks (9) at two ends of a tarpaulin supporting rod (11) at the rearmost end of the carriage (19) are respectively connected with chains (10) at two sides of the carriage (19) through fixing buckles (13), the tarpaulin covers the tarpaulin supporting rod (11), the tarpaulin is connected with the tarpaulin supporting rod (11) through a fixing ring, a motor (1) is connected with a controller (12), and the controller (12) is installed in an automobile cab.
2. The thatch cover device for a dump truck carriage according to claim 1, wherein: two slide rail (8) comprise top surface, side and bottom surface respectively, and the top surface is rectangular steel sheet, and two sides have welded the top surface both sides respectively perpendicularly, and the bottom surface is two rectangular steel sheets, and two rectangular steel sheets in bottom surface weld respectively in the inboard of two sides, and the rectangular steel sheet of bottom surface is parallel with the top surface, and is gapped between the rectangular steel sheet of two bottom surfaces.
3. The thatch cover device for a dump truck carriage according to claim 1, wherein: the sliding block (9) is composed of two bearings (15) and a shaft lever (16), the shaft lever (16) is sleeved in inner rings of the two bearings (15), the two bearings (15) are respectively embedded on strip-shaped steel plates on two sides of the bottom surface of the sliding rail (8), gaps between the shaft lever (16) and the bottom surface of the sliding rail (8) are opposite, and the shaft lever (16) is connected with the tarpaulin supporting rod (11) through a connecting component (14).
4. The thatch cover device for a dump truck carriage according to claim 3, wherein: coupling assembling (14) include axostylus axostyle connecting plate (17) and bracing piece connecting plate (18), axostylus axostyle connecting plate (17) are placed perpendicularly, welded connection in the middle of upper end and axostylus axostyle (16) of axostylus axostyle connecting plate (17), the lower extreme of axostylus axostyle connecting plate (17) passes the lower part of clearance and bracing piece connecting plate (18) of slide rail (8) bottom surface and is connected through the bolt, bracing piece connecting plate (18) are the steel sheet of buckling, the lower extreme of back and tarpaulin bracing piece (11) is walked around from one side of.
5. The thatch cover device for a dump truck carriage according to claim 1, wherein: the fixing buckle (13) is formed by processing a thin steel plate, is rectangular, is uniformly provided with three pore channels, and is used for fixedly connecting the sliding block (9) and the chain (10) together through bolts and nuts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921845515.6U CN211543367U (en) | 2019-10-30 | 2019-10-30 | Covering device for carriage of self-discharging automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921845515.6U CN211543367U (en) | 2019-10-30 | 2019-10-30 | Covering device for carriage of self-discharging automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211543367U true CN211543367U (en) | 2020-09-22 |
Family
ID=72499359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921845515.6U Active CN211543367U (en) | 2019-10-30 | 2019-10-30 | Covering device for carriage of self-discharging automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211543367U (en) |
-
2019
- 2019-10-30 CN CN201921845515.6U patent/CN211543367U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111532813B (en) | Goods shelf on high-rise goods of transport vehicle | |
| CN210821970U (en) | Carriage of self-discharging vehicle with conveyer belt | |
| US9616794B2 (en) | Frame assembly of moveable stowage device and its application as a transport vehicle | |
| CN109625880B (en) | Bucket-type belt conveyor gallery blanking recovery vehicle | |
| CN210363513U (en) | Self-discharging semitrailer with movable side plate | |
| CN211543367U (en) | Covering device for carriage of self-discharging automobile | |
| CN201050046Y (en) | Highly effective iron ore powder collecting vehicle | |
| CN202345485U (en) | Conveyer belt type dump truck | |
| CN201457182U (en) | Automotive container easy to be loaded and unloaded | |
| CN211892974U (en) | Semitrailer is from discharge devices | |
| CN102951414A (en) | Seat conveyor and conveying method | |
| CN209796887U (en) | Electric feeding device and pavement maintenance vehicle provided with same | |
| CN211195966U (en) | Vehicle-mounted object transmission device and semi-trailer comprising same | |
| CN103395588B (en) | Small-sized sanitation vehicle with self-discharging function | |
| CN216151478U (en) | Laser cutting system for special-shaped beam | |
| CN202358699U (en) | Screw unloading machine | |
| CN211335693U (en) | Dump truck device | |
| CN211918727U (en) | Trolley for pushing and turning over during building construction | |
| CN213831497U (en) | Automatic covering device for integral tarpaulin of storehouse barrier vehicle | |
| CN110861663B (en) | Multifunctional rail-guided carrying shuttle car | |
| CN113104136A (en) | Automatic disassembly line for scrapped motor vehicle | |
| CN109017509B (en) | Bottom leakage prevention conveying belt of conveying belt self-unloading semitrailer | |
| CN112208420A (en) | Truck bottom opening and closing device and truck | |
| CN219340707U (en) | Automatic feeding mechanism of intermediate frequency electric furnace | |
| CN212473219U (en) | Dumper carriage with tarpaulin automatic winding device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |