CN104309970B - Novel Self-loading-unloading mechanism - Google Patents
Novel Self-loading-unloading mechanism Download PDFInfo
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- CN104309970B CN104309970B CN201410460590.6A CN201410460590A CN104309970B CN 104309970 B CN104309970 B CN 104309970B CN 201410460590 A CN201410460590 A CN 201410460590A CN 104309970 B CN104309970 B CN 104309970B
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Abstract
The present invention relates to a kind of novel Self-loading-unloading mechanism, comprise a support being fixed on vehicle, between support and base, be hinged with two pivoted arms that straight length is different, hydraulic cylinder is articulated with wherein between a pivoted arm and support, the two pivoted arms driving base turning that cooperatively interacts; On base, be provided with extension stave, on base, be also hinged with pressure stave, press on stave and be fixed with rotating push-rod, be fixed with and hang bucket cam on a pivoted arm corresponding with rotating push-rod, an extension bucket cam matches with rotating push-rod to drive to press stave to rotate and coordinate to realize with extension stave and clamps. Hanging bucket cam and rotating push-rod cooperatively interacts, make to press stave to rotate around hinge point, thereby complete press stave with hang stave mutually near or the action left, press stave mutually close with extension stave, just can clamp the upper edge of dustbin, and carry in process on base rotates, this clamping force exists all the time, can not cause dustbin to rock, promote steadily.
Description
Technical field
The present invention relates to a kind of Self-loading-unloading mechanism, the novel Self-loading-unloading of the one mechanism that especially saves clamping cylinder and can complete handling.
Background technology
Rear-loading type refuse collecting truck is the urban sanitation special-purpose vehicle of a kind of efficient collection, transhipment rubbish, the secondary pollution that can stop to spill on the way in refuse collection, transport process and cause, and working space is little, can meet to be difficult to realize under the environment of refuse collection at the narrow Other Waste car such as lane, alley and collect life canned garbage, be the ideal equipment of working in urban sanitation. Self-discharging garbage vehicle in the market mainly contains two kinds of side-mounted and rear-loading types. Side-mounted refuse collecting truck has more been used on collection changing food waste, in addition the designed rear-loading type refuse collecting truck of some on market colleagues producer only Self-loading-unloading device just used many group oil cylinders, they turn over bucket, discharging needs respectively different oil cylinders to control, operate so more complicated, leaking also easily appears in many group oil cylinders, and manufacturing cost is higher.
In the bucket of dumping rubbish, need to clamp dustbin, while preventing dustbin overturning, plough under in compartment refuse bucket in company with rubbish, clamp in order to realize dustbin, generally all can be by oil cylinder to clamping straining to lead to, need to increase the controlling organization of oil cylinder and this oil cylinder, can make whole hydraulic system more complicated.
Therefore also someone has designed a kind of new mechanism that can clamp dustbin without oil cylinder, such as: Patent Office of the People's Republic of China has announced a CN202558156U document on November 28th, 2012, name is called self-discharging garbage vehicle pail device, comprise guide rail, chain, sprocket wheel, housing, slider bar, turning frame, rotating shaft, roller, extension spring, pail oil cylinder, guide rail forms L shaped structure by a bit of horizontal segment in top and lower minister vertical section, two symmetrical both sides that are arranged on pail device of guide rail, the housing rectangle framework that the resinous framework of two of the horizontal frame of upper and lower two and left and right forms of serving as reasons, the horizontal frame outer side edges of slider bar upper end is along being provided with the pail jacking block raising up, turning frame is the triangle framework of not establishing upper edge, the piston cylinder of pail oil cylinder is supported on the base of guide rail. but this device does not clamp dustbin in pail, dustbin upset will be through two processes, one is straight up, another is the upset of turning, straight up in process, dustbin this can overturning under Action of Gravity Field, need not clamp, although now there is housing to cover, but housing is also just pushed down edge on dustbin under the effect of housing self gravitation, emphasis is to reach after the turning of top, housing produces the action of upset under Action of Gravity Field, now housing cannot be pushed down dustbin, just play the effect stopping, housing cannot clamp dustbin with turning frame, therefore in the switching process of top, dustbin may depart from from turning frame, drop in refuse hopper, even without disengaging, also can in switching process, occur rocking, make rubbish in dustbin drop to ground because of shake, pollute periphery.
Summary of the invention
The invention provides a kind of novel Self-loading-unloading mechanism, in lifting process, folder bucket actuated by cams presses a stave to rotate, and with hang stave and coordinated to clamp and move, and keep clamping force always.
The invention solves existing garbage truck needs special oil cylinder to be used for clamping dustbin, cause the defect of hydraulic system complexity, control operation complexity, a kind of novel Self-loading-unloading mechanism is provided, clamp without special oil cylinder, rotation by folder bucket cam realizes clamping, save oil cylinder, simplified hydraulic system, also reduced the leakage point of hydraulic system.
The present invention has also solved existing garbage truck and has prevented that by baffle plate is set dustbin from dropping, cause clamping ineffective, dustbin easily rocks, and can make rubbish drop and pollute the defect on ground, a kind of novel Self-loading-unloading mechanism is provided, in lifting process, produce clamping force, clamp suitably, in dustbin upset, there will not be and rock, garbage energy is poured in refuse hopper completely, prevent from polluting surrounding ground.
The technical solution adopted for the present invention to solve the technical problems is: a kind of novel Self-loading-unloading mechanism, comprise for hang bucket base and the hydraulic cylinder for driving, also comprise a support being fixed on vehicle, between support and base, be hinged with two pivoted arms that straight length is different, hydraulic cylinder is articulated with wherein between a pivoted arm and support, the two pivoted arms driving base turning that cooperatively interacts, on base, be provided with extension stave, on base, be also hinged with pressure stave, press on stave and be fixed with rotating push-rod, be fixed with and hang bucket cam on a pivoted arm corresponding with rotating push-rod, an extension bucket cam matches with rotating push-rod to drive to press stave to rotate and coordinate to realize with extension stave and clamps. hang stave for hanging, such as dustbin, two pivoted arms are connected between base and support, when wherein a pivoted arm rotates under the driving of hydraulic cylinder, another pivoted arm forms interlock simultaneously and and then rotates, the straight length difference of two pivoted arms, and dustbin is kept upright in the time of ground like this, the state of toppling in upset while rising to high some, the bottom of dustbin can be higher than the lower edge of dustbin outlet, hanging bucket cam is fixed on pivoted arm, hanging bucket cam can rotate along with pivoted arm simultaneously, in rotation process, hanging the relative base of bucket cam rotates, hanging bucket cam and rotating push-rod cooperatively interacts, make to press stave to rotate around hinge point, thereby complete press stave with hang stave mutually near or the action left, press stave mutually close with extension stave, just can clamp the upper edge of dustbin, and on rotating, base carries in process, this clamping force exists all the time, only get back to original position at base, press stave and extension stave just can mutually leave, now clamping force just can discharge, also just conveniently take off dustbin, when dustbin is risen to high point, can not loosen, in the time of turnover dumping dustbin, there will not be the phenomenon of rocking, also just the rubbish in dustbin can not trickled down to outside, guarantee that surrounding ground is clean, the clamping force of this of pressure stave and the generation of extension stave to dustbin, need not realize by special hydraulic cylinder, whole mechanism also only has a hydraulic cylinder that drives pivoted arm, therefore whole hydraulic system is fairly simple, control also fairly simple, save the hydraulic cylinder that produces clamping force, also just can not increase the tie point of cylinder device, thereby reduced leakage point, straight length refers to the air line distance between the pin joint of pivoted arm two ends.
As preferably, the short pivoted arm of straight length is for regulating pivoted arm, and the long pivoted arm of straight length is upset pivoted arm, wherein regulates pivoted arm in upset pivoted arm top. In arranging, can according to actual needs pivoted arm be designed to warp architecture, therefore the physical length of pivoted arm may be longer than its straight length.
As preferably, regulate pivoted arm to be articulated with the upper position of base, upset pivoted arm is articulated with the lower position of base; Hanging bucket cam is fixed on adjusting pivoted arm.
As preferably, two pivoted arms are frame-shaped construction, include two parallel tumbler assemblies, the rotating shaft of being fixed on tumbler assembly end, and this rotating shaft is articulated with on support, the other end that is wherein fixed with the tumbler assembly of the pivoted arm of hanging bucket cam is also fixed with rotating shaft, hangs bucket cam and is fixed in this rotating shaft. Pivoted arm is shaped as frame, support more stable, drive dustbin rotate time more steady.
As preferably, the pivoted arm of connecting fluid cylinder pressure is fixed with push rod in the rotating shaft being articulated with on support, end and the hydraulic cylinder of push rod are hinged, the two ends of push rod and hydraulic cylinder are articulated with one on support and correct and formed triangle, and this leg-of-mutton position just in time makes Driven by Hydraulic Cylinder push rod and drives pivoted arm on base, to propose upset by push rod. Leg-of-mutton connected mode, the force direction that hydraulic cylinder is produced has been avoided the articulated position of pivoted arm on support.
As preferably, press stave tilting to be fixed on backing plate, backing plate and rotating push-rod fix, and between the surface in top that pressure stave tilts and backing plate, form guide face. Backing plate and rotating push-rod fix, press stave to rotate with backing plate, press stave to coordinate and clamp dustbin with extension stave, in the time dumping rubbish barrel, guide face just in time carries out water conservancy diversion to rubbish, garbage energy is poured in refuse hopper completely, and backing plate can extend in the opening of refuse hopper, prevent that rubbish from trickling down to outside.
As preferably, the length of backing plate is greater than the length of the opening of bucket, presses stave to be fixed on the middle part of backing plate along the length direction of backing plate, presses the width of stave to adapt with the width at the edge of the peristome of bucket and does not stop the opening of bucket. Press the middle part of stave in backing plate, backing plate is divided into two parts like this, and a part is as guide face, and in an angle, this angle just in time blocks the outside, edge of dustbin opening, and dustbin is positioned for another part and pressure stave shape.
As preferably, rotating push-rod is articulated with on base, rotating push-rod forms by two sections towards a side of hanging bucket cam, one section is the straightway near base, another section is the arc away from base, and when an extension bucket cam contacts with straightway, rotating push-rod band dynamic pressure stave abduction separates with extension stave, when an extension bucket cam contacts with arc, rotating push-rod band dynamic pressure stave rotates with extension stave close to base.
As preferably, hang the cam that bucket cam comprises cam arm and is hinged on cam arm one end, the other end of cam arm adopts the mode of anchor ear to be fixed on corresponding pivoted arm and with this pivoted arm and rotates.
As preferably, this mechanism is installed on the rear portion of vehicle, on the vehicle frame of vehicle, be provided with the compartment with opening, the rear portion in compartment is the railway carriage or compartment wall of the sealing of inclination, the upper end position of opening in railway carriage or compartment, rear portion, compartment wall, this position is corresponding with the position of pressing stave to drive lifting to be issued at pivoted arm, and top, compartment place is provided with openable for sealing renovating of opening.
The invention has the beneficial effects as follows: hang bucket cam and rotating push-rod and cooperatively interact, make to press stave to rotate around hinge point, thereby complete press stave with hang stave mutually near or the action left, press stave mutually close with extension stave, just can clamp the upper edge of dustbin, and on rotating, base carries in process, this clamping force exists all the time, can not cause dustbin to rock, promote steadily, only get back to original position at base, press stave and extension stave just can mutually leave, now clamping force just can discharge, also just conveniently take off dustbin, when dustbin is risen to high point, can not loosen, in the time of turnover dumping dustbin, there will not be the phenomenon of rocking, also just the rubbish in dustbin can not trickled down to outside, guarantee that surrounding ground is clean.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is a kind of rearview of the present invention;
Fig. 3 is a kind of schematic perspective view of the present invention;
Fig. 4 is a kind of upset of the present invention intermediateness schematic diagram;
Fig. 5 is a kind of upset of the present invention done state schematic diagram;
Fig. 6 is the rearview of state shown in Fig. 5 of the present invention;
Fig. 7 is a kind of action variation schematic diagram that clamps of the present invention;
In figure: 1, support, 2, pivoted arm, 3, base, 4, dustbin, 5, backing plate, 6, novel Self-loading-unloading mechanism, 7, opening, 8, compartment, 9, renovate, 10, press stave, 11, hang stave, 12, push rod, 13, rotating shaft, 14, hydraulic cylinder, 15, upset pivoted arm, 16, regulate pivoted arm, 17, hang bucket a cam, 18, rotating push-rod, 19, arc, 20, straightway.
Detailed description of the invention
Below by specific embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment: a kind of novel Self-loading-unloading 6(of mechanism is referring to accompanying drawing 1 accompanying drawing 2 accompanying drawings 3), comprise a support 1 that is fixed on rear view of vehicle, on support, be hinged with hydraulic cylinder 14, on support, be also hinged with two pivoted arms 2 that straight length is different, the end of two pivoted arms is hinged with base 3, and base is used for hanging bucket.
The short pivoted arm of straight length is adjusting pivoted arm 16, and the long pivoted arm of straight length is upset pivoted arm 15. Wherein regulate pivoted arm in upset pivoted arm top, namely regulate the top of the hinged position of pivoted arm and base in base, the below of the hinged position of upset pivoted arm and base in base, regulates the hinged position of pivoted arm and support higher than the hinged position of pivoted arm and support of overturning. Two pivoted arms are frame-shaped construction, include two parallel tumbler assemblies, the rotating shaft 13 of being fixed on tumbler assembly end. Upset pivoted arm is articulated with and in the rotating shaft on support, is fixed with push rod 12, the end of push rod and hydraulic cylinder 14 are hinged, the two ends of push rod and hydraulic cylinder are articulated with one on support and correct and formed triangle, and this leg-of-mutton position just in time makes Driven by Hydraulic Cylinder push rod and drives pivoted arm on base, to propose upset by push rod.
On base, be fixed with and hang stave 11, hang stave and parallel with susceptor surface, the upper side edge of hanging stave is provided with vertical slot, and the upper side edge between slot is fixed with cylinder, and the upper side edge of hanging stave reaches base top. The bottom of base back surface is fixed with free bearing, this free bearing is hinged with the rotating shaft of upset pivoted arm, the position on the upper side, middle part of base back surface is fixed with free bearing, this free bearing is hinged with the rotating shaft that regulates pivoted arm, the upper position of base back surface is fixed with free bearing, this free bearing is hinged with rotating push-rod 18(referring to accompanying drawing 7) end of rotating push-rod is fixed with backing plate 5, and backing plate and rotating push-rod tilt. The length of backing plate is greater than the length of the opening of dustbin 4, the two ends of the length direction of backing plate are structure curved on arc, the middle part of backing plate is alongst fixed with presses stave 10, press stave and backing plate surface to tilt, the width at the edge of the pressure width of stave and the peristome of dustbin adapts and does not stop the opening of dustbin. Between the surface in top that pressure stave tilts and backing plate, form guide face, press the card division that between stave opposite side surface and backing plate, dustbin peristome edge is blocked in formation. Regulate pivoted arm hinged with base on the middle part of rotating shaft be fixed with and hang a bucket cam 17, hang the cam that bucket cam comprises cam arm and is hinged on cam arm one end, the other end of cam arm adopts the mode of anchor ear to be fixed in corresponding rotating shaft and with regulating pivoted arm to rotate. Rotating push-rod forms by two sections towards a side of hanging bucket cam, one section is the straightway 20 near base, another section is the arc 19 away from base, when an extension bucket cam contacts with straightway, rotating push-rod band dynamic pressure stave abduction separates with extension stave, when an extension bucket cam contacts with arc, rotating push-rod band dynamic pressure stave rotates with extension stave close to base.
On the vehicle frame of vehicle, be provided with the compartment 8 with opening 7, the rear portion in compartment is the railway carriage or compartment wall of the sealing of inclination, the upper end position of opening in railway carriage or compartment, rear portion, compartment wall, this position drives at pivoted arm with pressing stave that to promote the position that is issued to corresponding, and top, compartment place is provided with openablely renovates 9 for what seal opening.
Initial position, base, on ground, now can be hanging to dustbin and hang on stave, and dustbin stands on ground, at this moment presses stave to be separated with hanging stave, can not clamp dustbin, also can not hang and cause obstruction dustbin. After dustbin hangs and puts in place, hydraulic cylinder 14 extends, and the rotating shaft that Hydraulic Cylinder push rod is articulated with on support around upset pivoted arm is rotated, and push rod drives upset pivoted arm to rotate, and regulates pivoted arm to form interlock simultaneously. Regulating under the effect of pivoted arm and the dual restriction of upset pivoted arm, on base, carrying and upset gradually, making the opening of dustbin towards the opening in compartment (referring to accompanying drawing 4). In adjusting pivoted arm rotation process, hang bucket cam along with regulating pivoted arm synchronously to rotate, hang in bucket cam rotation process and be rolled to arc (referring to accompanying drawing 7) from the straightway of rotating push-rod, promoting rotating push-rod rotates around hinge point, rotating push-rod drives backing plate to rotate towards hanging stave direction, press stave close with extension stave gradually, and coordinate and clamp dustbin peristome with extension stave. Along with being rotated further of upset pivoted arm, dustbin is carried on continuing under the acting in conjunction that regulates pivoted arm and upset gradually, the opening of dustbin turns to the opening in compartment, now this clamping force exists always, thereby ensure that dustbin can not rock, the effect of curved and guide face on the arc at backing plate two ends, when rubbish is poured out from dustbin, can be poured into completely in compartment, can not trickle down surrounding ground.
Then hydraulic cylinder is retracted, upset pivoted arm and regulating rotary revolution of arm, get back to ground with backing plate, in turning course, hang bucket cam and transfer to straightway from the segmental arc of rotating push-rod again, press stave to separate with extension stave gradually, discharge the clamping force to dustbin, while falling back to ground to dustbin, clamping force is eliminated, press stave to leave enough distances with hanging stave, can not hinder dustbin and take off from hanging stave. So can carry out again toppling over of next dustbin.
Above-described embodiment is a kind of preferred version of the present invention, not the present invention is done to any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim records.
Claims (8)
1. a Self-loading-unloading mechanism, comprise for hang bucket base (3) and the hydraulic cylinder (14) for driving, characterized by further comprising a support (1) being fixed on vehicle, between support and base, be hinged with two pivoted arms (2) that straight length is different, hydraulic cylinder is articulated with wherein between a pivoted arm and support, the two pivoted arms driving base turning that cooperatively interacts; On base, be provided with and hang stave (11), on base, be also hinged with and press stave (10), press on stave and be fixed with rotating push-rod (18), on a pivoted arm corresponding with rotating push-rod, be fixed with and hang bucket cam (17), an extension bucket cam matches with rotating push-rod to drive to press stave to rotate and coordinate to realize with extension stave and clamps; Two pivoted arms are frame-shaped construction, include two parallel tumbler assemblies, the rotating shaft (13) of being fixed on tumbler assembly end, this rotating shaft is articulated with on support, and the other end that is wherein fixed with the tumbler assembly of the pivoted arm of hanging bucket cam is also fixed with rotating shaft, hangs bucket cam and is fixed in this rotating shaft; Press stave tilting to be fixed on backing plate (5) upper, backing plate and rotating push-rod fix, and between the surface in top that pressure stave tilts and backing plate, form guide face.
2. Self-loading-unloading according to claim 1 mechanism, is characterized in that the short pivoted arm of straight length is for regulating pivoted arm (16), and the long pivoted arm of straight length is upset pivoted arm (15), wherein regulates pivoted arm in upset pivoted arm top.
3. Self-loading-unloading according to claim 2 mechanism, is characterized in that regulating pivoted arm to be articulated with the upper position of base, and upset pivoted arm is articulated with the lower position of base; Hanging bucket cam is fixed on adjusting pivoted arm.
4. according to the Self-loading-unloading mechanism described in claim 1 or 2 or 3, the pivoted arm that it is characterized in that connecting fluid cylinder pressure is fixed with push rod (12) in the rotating shaft being articulated with on support, end and the hydraulic cylinder of push rod are hinged, the two ends of push rod and hydraulic cylinder are articulated with one on support and correct and formed triangle, and this leg-of-mutton position just in time makes Driven by Hydraulic Cylinder push rod and drives pivoted arm on base, to propose upset by push rod.
5. Self-loading-unloading according to claim 1 mechanism, it is characterized in that the length of backing plate is greater than the length of the opening of bucket, press stave to be fixed on the middle part of backing plate along the length direction of backing plate, press the width of stave to adapt with the width at the edge of the peristome of bucket and do not stop the opening of bucket.
6. Self-loading-unloading mechanism according to claim 1 or 5, it is characterized in that rotating push-rod is articulated with on base, rotating push-rod forms by two sections towards a side of hanging bucket cam, one section is the straightway (20) near base, another section is the arc (19) away from base, and when an extension bucket cam contacts with straightway, rotating push-rod band dynamic pressure stave abduction separates with extension stave, when an extension bucket cam contacts with arc, rotating push-rod band dynamic pressure stave rotates with extension stave close to base.
7. Self-loading-unloading according to claim 6 mechanism, is characterized in that hanging the cam that bucket cam comprises cam arm and is hinged on cam arm one end, and the other end of cam arm adopts the mode of anchor ear to be fixed on corresponding pivoted arm and with this pivoted arm and rotates.
8. Self-loading-unloading according to claim 1 mechanism, it is characterized in that this mechanism is installed on the rear portion of vehicle, on the vehicle frame of vehicle, be provided with the compartment (8) of band opening (7), the rear portion in compartment is the railway carriage or compartment wall of the sealing of inclination, the upper end position of opening in railway carriage or compartment, rear portion, compartment wall, this position is corresponding with the position of pressing stave to drive lifting to be issued at pivoted arm, and top, compartment place is provided with openable for sealing renovate (9) of opening.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410460590.6A CN104309970B (en) | 2014-09-12 | 2014-09-12 | Novel Self-loading-unloading mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410460590.6A CN104309970B (en) | 2014-09-12 | 2014-09-12 | Novel Self-loading-unloading mechanism |
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| CN104309970A CN104309970A (en) | 2015-01-28 |
| CN104309970B true CN104309970B (en) | 2016-05-04 |
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| CN201410460590.6A Active CN104309970B (en) | 2014-09-12 | 2014-09-12 | Novel Self-loading-unloading mechanism |
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| CN106913438A (en) * | 2015-12-28 | 2017-07-04 | 天津康丽医疗器械有限公司 | A kind of bedding and clothing car |
| CN105584761A (en) * | 2016-03-22 | 2016-05-18 | 安徽爱瑞特环保科技股份有限公司 | Garbage collection device for pure electric garbage truck |
| CN105668096A (en) * | 2016-03-22 | 2016-06-15 | 安徽爱瑞特环保科技股份有限公司 | Garbage collection device for pure electric compression type garbage truck |
| CN106275991A (en) * | 2016-08-31 | 2017-01-04 | 南通明诺电动科技股份有限公司 | A kind of pure electric garbage collection transport vehicle |
| CN106241137B (en) * | 2016-09-30 | 2018-06-01 | 盐城工学院 | A kind of mechanical arm and rubbish van |
| CN106742981A (en) * | 2016-12-29 | 2017-05-31 | 广西玉柴专用汽车有限公司 | A kind of automatic pail device of garbage truck |
| CN107539687A (en) * | 2017-08-29 | 2018-01-05 | 劲旅环境科技有限公司 | A kind of straight-arm well-bucket car turns over bucket gear bucket link gear |
| CN107963376A (en) * | 2017-10-24 | 2018-04-27 | 山东五征环保科技股份有限公司 | A kind of compression type garbage truck combines feeding device |
| CN107867519A (en) * | 2017-10-24 | 2018-04-03 | 山东五征环保科技股份有限公司 | One kind combination feeding compression type garbage truck |
| CN109178725B (en) * | 2018-09-11 | 2021-12-24 | 长沙中联重科环境产业有限公司 | Classified garbage collecting vehicle |
| CN111169870A (en) * | 2018-11-13 | 2020-05-19 | 河南森源重工有限公司 | Garbage truck with rear-mounted bucket |
| CN115282903B (en) * | 2021-12-28 | 2024-05-24 | 武汉市政环境工程建设有限公司 | Leachate solidification backfill device based on slurry pipeline conveying |
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| DE2716656C3 (en) * | 1977-04-15 | 1980-01-24 | Sollinger Huette Gmbh, 3418 Uslar | Tilting device for emptying containers, in particular rubbish bins |
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| CN2559611Y (en) * | 2002-07-16 | 2003-07-09 | 上海环境科技装备有限公司 | Raising mechanism for refuse-collecting vehicle |
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