CN212413944U - Town road greenbelt trimming means - Google Patents
Town road greenbelt trimming means Download PDFInfo
- Publication number
- CN212413944U CN212413944U CN202020567072.5U CN202020567072U CN212413944U CN 212413944 U CN212413944 U CN 212413944U CN 202020567072 U CN202020567072 U CN 202020567072U CN 212413944 U CN212413944 U CN 212413944U
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- motor
- trimming
- base
- drive
- 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
Abstract
A municipal road green belt trimming device comprises a base, wherein a lifting mechanism is arranged inside the base, the upper end of the lifting mechanism is connected with a supporting table, the upper end of a first sliding block is fixedly connected with an upright column, the output end of a second motor is provided with a first trimming knife, and the lower end of a supporting arm is provided with a trimming mechanism; the utility model has the advantages of reasonable design, it goes up and down to drive trimming mechanism through elevating system, can adjust the trimming mechanism height according to the height of greenbelt, the fifth motor passes through the gear, pinion rack and movable plate cooperation, it controls and removes to drive the second trimming sword, can control comprehensive pruning about the greenbelt upper end, first motor just reverses and drives first screw rod and rotate, thereby drive first trimming sword and reciprocate, can make the comprehensive pruning to the greenbelt side, the guardrail when greenbelt bottom both sides blocks the base, it moves right along first slide rail through first slider to drive the stand through electric telescopic handle, can drive first trimming sword and move right, until moving the suitable position to the greenbelt side pruning, the practicality is high.
Description
Technical Field
The utility model relates to a town road equipment technical field specifically is a town road greenbelt trimming means.
Background
The municipal roads are roads which reach all regions of a city, are used by traffic transportation and pedestrians in the city, are convenient for the life, work and cultural entertainment activities of residents, and are connected with the roads outside the city to bear the traffic outside the city. The green belt refers to a strip-shaped zone for greening, occupies an irreplaceable important position in a city, and has a traffic separation function and a safety function. The green belt has the effect of beautifying the city, can eliminate visual fatigue of a driver, and can change the space scale of the road by planting the arbor green belt, so that the road space has good aspect ratio. In addition, the dust-absorbing agent has the functions of purifying the environment, retaining dust, weakening noise, absorbing harmful gases and releasing oxygen. In order to keep the greenbelt tidy and beautiful, the greenbelt needs to be regularly trimmed and maintained.
At present, the trimming of most urban green belts is still finished by a large amount of workers, so that a large amount of labor is wasted, the manual trimming is not uniform, the trimming is uneven and unattractive, and the trimming efficiency is low; the pruning device can be used in partial cities, but the pruning device in the market can not adjust the pruning height of the device according to the heights of different green belts, and only can prune the upper ends or the side surfaces of a single pair of green plants, and the pruning is not comprehensive, so that the application range is limited.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a town road greenbelt trimming means to solve the problem that appears in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a municipal road green belt pruning device comprises a base, wherein a moving groove is formed in the upper end of the base, a lifting mechanism is arranged in the base, a supporting table is connected to the upper end of the lifting mechanism, a vertical plate and a first sliding rail are fixedly connected to the upper end of the supporting table, an electric telescopic rod is fixedly connected to the right end of the vertical plate, a first sliding block is slidably connected to the upper end of the first sliding rail, a vertical column is fixedly connected to the upper end of the first sliding block, the left end of the vertical column is fixedly connected to the telescopic end of the electric telescopic rod, a lifting groove is formed in the right side wall of the vertical column, a first screw rod is rotatably connected to the inner portion of the vertical column, a first motor is fixedly connected to the upper end of the vertical column, the output end of the first motor is fixedly connected to the upper end of the first screw rod, a moving block is screwed to the first screw rod, the right end of the upper side of the upright post is fixedly connected with a supporting arm, and the lower end of the supporting arm is provided with a trimming mechanism.
Preferably, the lifting mechanism comprises a second screw rod, the second screw rod is rotatably connected to the inner wall of the base, a third motor is fixedly connected to the left end of the base, the output end of the third motor is fixedly connected to the left end of the second screw rod, the screw threads on two sides of the second screw rod are opposite in rotation direction, moving sleeves are symmetrically screwed on two sides of the second screw rod, the upper ends of the moving sleeves are hinged to connecting rods, and the upper ends of the connecting rods on two sides extend out of the moving grooves and are hinged to the lower end of the supporting table.
Preferably, a town road greenbelt trimming means, trimming means includes the second slide rail, second slide rail rigid coupling in support arm lower extreme, the lower extreme sliding connection of second slide rail has two second sliders, the lower extreme rigid coupling of second slider has the movable plate, movable plate front side rigid coupling has the pinion rack, movable plate lower extreme rigid coupling has the fourth motor, the second pruning sword is installed to fourth motor lower extreme, the support arm front end rigid coupling has the fifth motor, the output rigid coupling of fifth motor has the gear, gear and pinion rack meshing transmission.
Preferably, the width of the moving block is smaller than that of the lifting groove, and the width of the connecting rod is smaller than that of the moving groove.
Preferably, a municipal road green belt trimming means, the equal rigid coupling in front and back end of brace table has the handle, the antiskid cover has been cup jointed at the handle middle part, control switch is installed to the handle upper end, brace table upper end rear side is equipped with the battery.
Preferably, the universal wheels are installed at four corners of the bottom of the base.
The utility model has the advantages that:
1. the utility model has the advantages of reasonable design, drive the second screw rod through the third motor is just reversing and rotate, and the second screw rod drives the removal cover of both sides and is close to each other or keeps away from to it risees or reduces to drive a supporting bench through the connecting rod, and then drives a supporting bench top structure and pruning mechanism and go up and down, can adjust the pruning mechanism height according to the height of greenbelt, and the suitability scope is wide.
2. The upper end of the green belt plant is trimmed through rotation of the second trimming cutter, meanwhile, the fifth motor rotates to drive the gear to rotate, the toothed plate and the moving plate are driven to move left and right along the second sliding rail through the second sliding block, the fourth motor and the second trimming cutter are driven to move left and right, the second trimming cutter can be used for comprehensively trimming the upper end of the green belt left and right, and the situation that the green belt plant is not trimmed in place is avoided.
3. The side face of the green belt can be trimmed through the first trimming cutter, the first motor rotates forward and backward to drive the first screw to rotate, the first screw drives the moving block to move up and down, the first trimming cutter is driven to move up and down, the first trimming cutter can be used for comprehensively trimming the side face of the green belt, and the trimming effect is good. Through pruning the side surface and the upper end of the green belt at the same time, the pruning efficiency is improved, and the manual labor intensity is reduced.
4. When the guardrail of greenbelt bottom end both sides blocks the base, when leading to first pruning sword to contact the side plant, through starting the flexible end extension of electric telescopic handle, drive the stand and move to the right along first slide rail through first slider, can drive first pruning sword and move to the right, until removing the suitable position to the greenbelt side pruning, the flexibility is strong, and the practicality is high.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used for describing the embodiments are briefly introduced below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the lifting mechanism of the present invention;
FIG. 3 is a schematic view of the right side of the trimming mechanism of the present invention;
fig. 4 is a schematic view of the structure of the right side of the upright post of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-a base, 2-a moving groove, 3-a lifting mechanism, 301-a second screw rod, 302-a third motor, 303-a moving sleeve, 304-a connecting rod, 4-a supporting table, 5-a vertical plate, 6-a first sliding rail, 7-an electric telescopic rod, 8-a first sliding block, 9-an upright post, 10-a lifting groove, 11-a first screw rod, 12-a first motor, 13-a moving block, 14-a second motor, 15-a first cutter, 16-a supporting arm, 17-a trimming mechanism, 1701-a second sliding rail, 1702-a second sliding block, 1703-a moving plate, 1704-a toothed plate, 1705-a fourth motor, 1706-a second trimming cutter, 1707-a fifth motor, 1708-a gear, 18-a handle and 19-an anti-slip sleeve, 20-control switch, 21-storage battery, 22-universal wheel.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1-4, the embodiment is a municipal road green belt pruning device, which comprises a base 1, a moving groove 2 is formed at the upper end of the base 1, a lifting mechanism 3 is arranged inside the base 1, a supporting platform 4 is connected to the upper end of the lifting mechanism 3, a vertical plate 5 and a first sliding rail 6 are fixedly connected to the upper end of the supporting platform 4, an electric telescopic rod 7 is fixedly connected to the right end of the vertical plate 5, a first sliding block 8 is slidably connected to the upper end of the first sliding rail 6, an upright post 9 is fixedly connected to the upper end of the first sliding block 8, the left end of the upright post 9 is fixedly connected to the telescopic end of the electric telescopic rod 7, a lifting groove 10 is formed on the right side wall of the upright post 9, a first screw 11 is rotatably connected to the inside of the upright post 9, a first motor 12 is fixedly connected to the upper end of the upright post 9, an output end of the first motor 12 is fixedly connected to the upper end, the output end of the second motor 14 is provided with a first trimming blade 15, the upper right end of the upright post 9 is fixedly connected with a supporting arm 16, the lower end of the supporting arm 16 is provided with a trimming mechanism 17, the width of the moving block 13 is smaller than that of the lifting groove 10, the width of the connecting rod 304 is smaller than that of the moving groove 2, and the moving block 13 and the connecting rod 304 can move in the lifting groove 10 and the moving groove 2 respectively. The front end and the rear end of the supporting table 4 are fixedly connected with a handle 18, the middle of the handle 18 is sleeved with an anti-slip sleeve 19, friction with a palm can be increased, the palm is prevented from slipping off, the upper end of the handle 18 is provided with a control switch 20, the rear side of the upper end of the supporting table 4 is provided with a storage battery 21, and the storage battery 21 provides a power supply. The universal wheels 22 are arranged at four corners of the bottom of the base 1, and the universal wheels 22 can facilitate the movement of the device.
The lifting mechanism 3 comprises a second screw 301, the second screw 301 is rotatably connected to the inner wall of the base 1, the left end of the base 1 is fixedly connected with a third motor 302, the output end of the third motor 302 is fixedly connected to the left end of the second screw 301, the thread turning directions of the two sides of the second screw 301 are opposite, the two sides of the second screw 301 are symmetrically and spirally connected with moving sleeves 303, the upper ends of the moving sleeves 303 are hinged with connecting rods 304, the upper ends of the connecting rods 304 at the two sides extend out of the moving groove 2 and are hinged to the lower end of the supporting table 4, the third motor 302 rotates forward and backward to drive the second screw 301 to rotate, the thread turning directions of the two sides of the second screw 301 are opposite to drive the moving sleeves 303 at the two sides to be close to or far away from each other, so that the supporting table 4 is driven to rise or fall through the connecting.
The trimming mechanism 17 comprises a second slide rail 1701, the second slide rail 1701 is fixedly connected to the lower end of the supporting arm 16, the lower end of the second slide rail 1701 is slidably connected with two second sliders 1702, the lower end of each second slider 1702 is fixedly connected with a moving plate 1703, a toothed plate 1704 is fixedly connected to the front side of each moving plate 1703, a fourth motor 1705 is fixedly connected to the lower end of each moving plate 1703, a second trimming knife 1706 is mounted at the lower end of each fourth motor 1705, a fifth motor 1707 is fixedly connected to the front end of the supporting arm 16, a gear 1708 is fixedly connected to the output end of the fifth motor 1707, the gear 1708 is in meshing transmission with the toothed plate 1701704, the gear 1708 is in meshing transmission with the toothed plate 1704, the fourth motor 1705 drives the second trimming knife 1706 to rotate to trim the upper end of the green belt plant, meanwhile, the fifth motor 1707 rotates to drive the gear 1708 to drive the meshed toothed plate 1704 and the toothed plate 1703 to move left and right along the second slide, the second trimming blade 1706 can perform a complete trimming operation on the upper end of the green belt.
The utility model discloses a theory of operation does:
when using this device, at first remove this device to the greenbelt of road on one side, remove this device through handle 18 and universal wheel 22, at first according to the height of greenbelt, start third motor 302 positive and negative rotation through control switch 20 and drive second screw rod 301 and rotate, the removal cover 303 that second screw rod 301 both sides screw thread turned to opposite drive both sides is close to each other or keeps away from, thereby it risees or reduces to drive brace table 4 through connecting rod 304, and then drive brace table 4 top structure and trimming means 17 and go up and down, can adjust trimming means 17 height according to the height of greenbelt, and the suitability is strong. Then, a fourth motor 1705 and a fifth motor 1707 are started, the fourth motor 1705 drives a second trimming knife 1706 to rotate to trim the upper end of the green belt plant, meanwhile, the fifth motor 1707 rotates to drive a gear 1708 to rotate, the gear 1708 drives a toothed plate 1704 and a moving plate 1703 which are meshed to move left and right along a second sliding rail 1701 through a second slider 1702, so that the fourth motor 1705 and the second trimming knife 1706 below the moving plate 1703 are driven to move left and right, the second trimming knife 1706 can comprehensively trim the upper end of the green belt left and right, and the situation that the green belt plant is not trimmed in place is avoided. The first motor 12 and the second motor 14 are started simultaneously, the second motor 14 rotates to drive the first trimming cutter 15 to rotate, the side face of the green belt can be trimmed, the first motor 12 rotates forward and backward to drive the first screw rod 11 to rotate, the first screw rod 11 drives the threaded moving block 13 to move up and down, the second motor 14 and the first trimming cutter 15 are driven to move up and down, the first trimming cutter 15 can be used for comprehensively trimming the side face of the green belt, and the trimming effect is good. Through pruning the side surface and the upper end of the green belt at the same time, the pruning efficiency is improved, and the manual labor intensity is reduced. When the guardrail of greenbelt bottom end both sides blocks base 1, when leading to first pruning sword 15 to contact the side plant, through starting the extension of the flexible end of electric telescopic handle 7, drive stand 9 and move to the right along first slide rail 6 through first slider 8, can drive stand 9 upper structure and first pruning sword 15 and move to the right, until removing the suitable position to the greenbelt side pruning, the flexibility is strong, and the practicality is high.
The electrical components are all electrically connected to the battery 21, and the control method is common knowledge, and therefore not described in detail in the specification.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.
Claims (6)
1. The utility model provides a town road greenbelt trimming means, includes base (1), its characterized in that: the upper end of the base (1) is provided with a moving groove (2), the interior of the base (1) is provided with an elevating mechanism (3), the upper end of the elevating mechanism (3) is connected with a supporting table (4), the upper end of the supporting table (4) is fixedly connected with a vertical plate (5) and a first sliding rail (6), the right end of the vertical plate (5) is fixedly connected with an electric telescopic rod (7), the upper end of the first sliding rail (6) is slidably connected with a first sliding block (8), the upper end of the first sliding block (8) is fixedly connected with a stand column (9), the left end of the stand column (9) is fixedly connected with the telescopic end of the electric telescopic rod (7), the right side wall of the stand column (9) is provided with an elevating groove (10), the interior of the stand column (9) is rotatably connected with a first screw rod (11), the upper end of the stand column (9) is fixedly connected with a first motor (12), a moving block (13) is connected to the first screw (11) in a threaded mode, the right end of the moving block (13) extends out of the lifting groove (10) and is fixedly connected with a second motor (14), a first trimming cutter (15) is installed at the output end of the second motor (14), a supporting arm (16) is fixedly connected to the right end of the upper side of the upright post (9), and a trimming mechanism (17) is arranged at the lower end of the supporting arm (16).
2. The municipal road green belt trimming device according to claim 1, wherein: elevating system (3) include second screw rod (301), second screw rod (301) rotate to be connected in base (1) inner wall, the left end rigid coupling of base (1) has third motor (302), third motor (302) output rigid coupling in second screw rod (301) left end, second screw rod (301) both sides screw thread revolves to opposite, second screw rod (301) bilateral symmetry spiro union has removal cover (303), the upper end of removing cover (303) articulates there is connecting rod (304), both sides the upper end of connecting rod (304) is stretched out shifting chute (2) and is articulated in the lower extreme that props up supporting bench (4).
3. The municipal road green belt trimming device according to claim 1, wherein: the trimming mechanism (17) comprises a second sliding rail (1701), the second sliding rail (1701) is fixedly connected to the lower end of the supporting arm (16), the lower end of the second sliding rail (1701) is slidably connected with two second sliding blocks (1702), the lower end of each second sliding block (1702) is fixedly connected with a moving plate (1703), a toothed plate (1704) is fixedly connected to the front side of each moving plate (1703), a fourth motor (1705) is fixedly connected to the lower end of each moving plate (1703), a second trimming knife (1706) is installed at the lower end of each fourth motor (1705), a fifth motor (1707) is fixedly connected to the front end of the supporting arm (16), a gear (1708) is fixedly connected to the output end of the fifth motor (1707), and the gear (1708) is in meshing transmission with the toothed plate (1704).
4. The municipal road green belt trimming device according to claim 2, wherein: the width of the moving block (13) is smaller than that of the lifting groove (10), and the width of the connecting rod (304) is smaller than that of the moving groove (2).
5. The municipal road green belt trimming device according to claim 1, wherein: the front end and the rear end of the supporting table (4) are fixedly connected with handles (18), the middle of each handle (18) is sleeved with an anti-skidding sleeve (19), the upper end of each handle (18) is provided with a control switch (20), and the rear side of the upper end of the supporting table (4) is provided with a storage battery (21).
6. The municipal road green belt trimming device according to claim 1, wherein: universal wheels (22) are installed at four corners of the bottom of the base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020567072.5U CN212413944U (en) | 2020-04-16 | 2020-04-16 | Town road greenbelt trimming means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020567072.5U CN212413944U (en) | 2020-04-16 | 2020-04-16 | Town road greenbelt trimming means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212413944U true CN212413944U (en) | 2021-01-29 |
Family
ID=74298657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020567072.5U Active CN212413944U (en) | 2020-04-16 | 2020-04-16 | Town road greenbelt trimming means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212413944U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113207462A (en) * | 2021-04-23 | 2021-08-06 | 山西工程技术学院 | Intelligent full-automatic green belt trimming device and method |
| CN113315317A (en) * | 2021-04-25 | 2021-08-27 | 江苏铭纳阳智能装备有限公司 | New forms of energy motor coil plane mechanism of shelling lacquer |
| CN113875419A (en) * | 2021-09-26 | 2022-01-04 | 林怡 | Vehicle-mounted hedge trimmer |
| CN114027049A (en) * | 2021-11-25 | 2022-02-11 | 安徽瀚一景观规划设计院有限公司 | Modeling pruning machine serving shrubs in rural scenic spots |
| CN114431023A (en) * | 2022-02-15 | 2022-05-06 | 特瑞拓软件(辽宁)有限公司 | Maintenance equipment is pruned to highway greenbelt |
| CN114916335A (en) * | 2022-06-06 | 2022-08-19 | 钱叶樟 | Three-dimensional curing means of integration is used to town road greenbelt |
-
2020
- 2020-04-16 CN CN202020567072.5U patent/CN212413944U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113207462A (en) * | 2021-04-23 | 2021-08-06 | 山西工程技术学院 | Intelligent full-automatic green belt trimming device and method |
| CN113315317A (en) * | 2021-04-25 | 2021-08-27 | 江苏铭纳阳智能装备有限公司 | New forms of energy motor coil plane mechanism of shelling lacquer |
| CN113315317B (en) * | 2021-04-25 | 2022-10-11 | 江苏铭纳阳智能装备有限公司 | New forms of energy motor coil plane mechanism of shelling lacquer |
| CN113875419A (en) * | 2021-09-26 | 2022-01-04 | 林怡 | Vehicle-mounted hedge trimmer |
| CN114027049A (en) * | 2021-11-25 | 2022-02-11 | 安徽瀚一景观规划设计院有限公司 | Modeling pruning machine serving shrubs in rural scenic spots |
| CN114431023A (en) * | 2022-02-15 | 2022-05-06 | 特瑞拓软件(辽宁)有限公司 | Maintenance equipment is pruned to highway greenbelt |
| CN114916335A (en) * | 2022-06-06 | 2022-08-19 | 钱叶樟 | Three-dimensional curing means of integration is used to town road greenbelt |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212413944U (en) | Town road greenbelt trimming means | |
| CN214638850U (en) | Sludge scraping device for sewage treatment tank | |
| CN202819062U (en) | Vehicle-mounted multi-degree of freedom numerical control hedge trimmer | |
| CN213676849U (en) | Handcart convenient for discharging | |
| CN108738805B (en) | Tree trimming equipment | |
| CN210777322U (en) | Multifunctional robot teaching equipment | |
| CN211806024U (en) | Portable automatic equipment maintenance platform | |
| CN210288239U (en) | Watering dust collector for building | |
| CN214296064U (en) | Transfer device for robot driving device | |
| CN209930986U (en) | Pruning device is planted in municipal garden | |
| CN212426663U (en) | Road surface cutting device for municipal administration | |
| CN112064485A (en) | Can change highway ground paint spraying apparatus of width of spraying paint | |
| CN216280252U (en) | Chassis motor fixing seat of indoor navigation robot | |
| CN214532744U (en) | Gardens are with multi-functional ladder of being convenient for collect branch and leaf | |
| CN108324188B (en) | Energy-concerving and environment-protective domestic guardrail cleaning cart | |
| CN214332486U (en) | High-pole lamp with lifting device | |
| CN219978975U (en) | Artificial intelligent device based on AI education | |
| CN214098945U (en) | Sample display device for landscape design | |
| CN217336804U (en) | Automatic irrigation device for vegetation restoration | |
| CN218178650U (en) | Novel LED removes light | |
| CN212326771U (en) | Electric wheelchair | |
| CN210537614U (en) | Two-way trimming means that urban afforestation used | |
| CN214475550U (en) | LED type traffic signal lamp | |
| CN213805104U (en) | Sweeper capable of realizing arcuate movement | |
| CN1447009A (en) | Movable ladder in use |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |