CN109650302A - Aerial lift device - Google Patents

Aerial lift device Download PDF

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Publication number
CN109650302A
CN109650302A CN201811513237.4A CN201811513237A CN109650302A CN 109650302 A CN109650302 A CN 109650302A CN 201811513237 A CN201811513237 A CN 201811513237A CN 109650302 A CN109650302 A CN 109650302A
Authority
CN
China
Prior art keywords
chassis
aerial lift
mecanum wheel
wheel
lifting
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.)
Pending
Application number
CN201811513237.4A
Other languages
Chinese (zh)
Inventor
李乐超
龙冶国
钟懿
田超
顾俊杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zoomlion Heavy Industry Science and Technology Co Ltd
Original Assignee
Zoomlion Heavy Industry Science and Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zoomlion Heavy Industry Science and Technology Co Ltd filed Critical Zoomlion Heavy Industry Science and Technology Co Ltd
Priority to CN201811513237.4A priority Critical patent/CN109650302A/en
Publication of CN109650302A publication Critical patent/CN109650302A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D63/00Motor vehicles or trailers not otherwise provided for
    • B62D63/02Motor vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B66F11/042Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations actuated by lazy-tongs mechanisms or articulated levers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/005Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper
    • F16F13/007Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper the damper being a fluid damper

Abstract

The present invention relates to engineering machinery fields, disclose a kind of aerial lift device, wherein, the aerial lift device includes chassis (100), lifting device (300) and workbench (400), lifting device is installed on chassis, to drive the workbench lifting being arranged on lifting device, chassis includes vehicle frame (110), pressure-bearing type swing arm (120) and running gear (200), running gear includes Mecanum wheel (210) and damper unit (220), Mecanum wheel is for driving chassis all-around mobile, one end of damper unit and vehicle frame are hinged, the other end and pressure-bearing type swing arm are hinged.Mecanum wheel is able to drive chassis and carries out all-around mobile.By the damper unit of setting connection pressure-bearing type swing arm and vehicle frame, promoted travelling performance can be cooperated to correspondingly increase the stability of aerial lift device.

Description

Aerial lift device
Technical field
The present invention relates to engineering machinery fields, more particularly to a kind of aerial lift device.
Background technique
In the prior art, aerial lift device generally includes workbench, lifting device (such as scissor arms), base apparatus Deng.Wherein, base apparatus includes running gear.Running gear includes left and right hub motor and wheel, and wheel is that hard rubber is solid Tire or foam fill tire, such as may include two front-wheels and two rear-wheels.By taking front-wheel drive turns to as an example, left and right wheel Hub motor can be separately mounted to the inside of two front-wheels.In this arrangement, before aerial lift device can only be realized simply Afterwards, movement is turned to, can not achieve all-around mobile (such as left and right transverse shifting, oblique straight trip, no-radius pivot stud etc.).Cause This, aerial lift device it is mobile restricted so that normal operation is restricted.
Summary of the invention
The purpose of the invention is to overcome the problems, such as that aerial lift device of the existing technology is mobile restricted, one is provided Kind aerial lift device, the aerial lift device can be realized all-around mobile.
To achieve the goals above, one aspect of the present invention provides a kind of aerial lift device, wherein the high altitude operation is set Standby includes chassis, lifting device and workbench, and the lifting device is installed on the chassis, is arranged with driving in the lifting Workbench lifting on device, the chassis include vehicle frame, pressure-bearing type swing arm and running gear, and the running gear includes wheat Ke Namu wheel and damper unit, the Mecanum wheel is for driving the chassis all-around mobile, and the one of the damper unit End is hinged with the vehicle frame, and the other end and the pressure-bearing type swing arm are hinged.
Preferably, the running gear includes the first Mecanum wheel and the second Mecanum wheel, and first Mike receives The orientation of the roller of the orientation of the roller of nurse wheel and second Mecanum wheel on the contrary, the chassis the same side It is arranged alternately first Mecanum wheel and the second Mecanum wheel, the quantity of the Mecanum wheel of the same side on the chassis For even number, first Mecanum wheel and the second Mecanum wheel is respectively set in the not ipsilateral corresponding position on the chassis.
Preferably, the damper unit includes hydraulic damper and the vibration damping bullet that is set on the outside of the hydraulic damper Spring, one end of the hydraulic damper and the vehicle frame are hinged, and the other end and the pressure-bearing type swing arm are hinged.
Preferably, the running gear includes the travel driving motor for driving the Mecanum wheel, the high-altitude Operating equipment includes the control unit for controlling the travel driving motor, and the aerial lift device further includes and the control The laser radar of unit electrical connection processed and/or ultrasonic obstacle avoidance sensor.
Preferably, described control unit includes the platform control device of chassis controller and setting on the working platform, For the chassis controller for controlling the travel driving motor, the platform control device can receive the chassis controller Signal and the operation that the travel driving motor can be controlled by the chassis controller.
Preferably, the aerial lift device include setting display on the working platform and with the display The camera of electrical connection.
Preferably, the laser radar is electrically connected with the platform control device, the ultrasound obstacle avoidance sensor and the bottom Disk controller electrical connection.
Preferably, the lifting device includes pump motor, and the chassis controller is also used to control the pump motor.
Preferably, the aerial lift device includes the supporting leg that is installed on the chassis and can stretch.
Through the above technical solutions, Mecanum wheel, which is able to drive chassis, carries out left and right transverse shifting, oblique straight trip, 0 half Diameter pivot stud and the all-around mobile advanced along arbitrary curve track, greatly improve the travelling performance of aerial lift device And range, enable adaptation to various handling situations.In addition, the travelling performance that cooperation is promoted, connects pressure-bearing type by setting The damper unit of swing arm and vehicle frame can correspondingly increase the stability of aerial lift device.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of embodiment of aerial lift device according to the present invention;
Fig. 2 is the schematic diagram of Fig. 1 high and medium operating equipment lower part main component;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the block diagram of the control unit for illustrating aerial lift device of the invention and the relationship of associated components.
Description of symbols
The chassis 100-, 110- vehicle frame, 120- pressure-bearing type swing arm, 200- running gear, 210- Mecanum wheel, 220- vibration damping Unit, 221- hydraulic damper, 222- shock-absorbing spring, 230- travel driving motor, 300- lifting device, 310- pump motor, 320- scissor arms, 400- workbench, 500- laser radar, 600- ultrasound obstacle avoidance sensor, 710- chassis controller, 720- are flat Platform control device, 800- camera, 900- supporting leg, B- battery.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, left and right " typically refers to With reference to upper and lower, left and right shown in the drawings;" inside and outside " refers to the inside and outside of the profile relative to each component itself.Below with reference to Attached drawing and in conjunction with embodiment come the present invention will be described in detail.
The present invention provides a kind of aerial lift device, wherein the aerial lift device includes chassis 100, lifting device 300 and workbench 400, the lifting device 300 be installed on the chassis 100, with drive be arranged in the lifting device 300 On workbench 400 go up and down, the chassis 100 include vehicle frame 110, pressure-bearing type swing arm 120 and running gear 200, the row Walking apparatus 200 includes Mecanum wheel 210 and damper unit 220, and the Mecanum wheel 210 is for driving the chassis 100 All-around mobile, one end of the damper unit 220 and the vehicle frame 110 are hinged, and the other end and the pressure-bearing type swing arm 120 are cut with scissors It connects.
Wherein, Mecanum wheel 210 is able to drive chassis and carries out left and right transverse shifting, oblique straight trip, no-radius pirouette To and along arbitrary curve track advance all-around mobile, greatly improve the travelling performance and range of aerial lift device, Various handling situations are enabled adaptation to, enable adaptation to various handling situations, such as can be in respective road (including soil The non-urban roads such as ground, sand ground, sandstone beach).
The roller of Mecanum wheel 210 including wheel and the multiple deflections being circumferentially arranged along wheel, when walking, pass through rolling Son contact ground, to be moved by roller along different directions in the case where the direction of wheel itself is constant.
Wherein, be drive chassis 100 carry out all-around mobile, the running gear 200 include the first Mecanum wheel and The roller of second Mecanum wheel, the orientation of the roller of first Mecanum wheel and second Mecanum wheel Orientation it is opposite (for example, if the front end of the roller of the first Mecanum wheel relative to rear end along the clockwise of wheel Direction offset setting, then counter clockwise direction offset of the front end of the roller of the second Mecanum wheel relative to rear end along wheel are set Set), the same side on the chassis 100 is arranged alternately first Mecanum wheel and the second Mecanum wheel, the chassis 100 The quantity of Mecanum wheel of the same side be even number, the not ipsilateral corresponding position on the chassis 100 is respectively set described the One Mecanum wheel and the second Mecanum wheel.Specifically, as shown in figure 3, roller R1 and the second wheat of the first Mecanum wheel The axis of the roller R2 of the corresponding position of Ke Namu wheel is substantially vertical.
For example, running gear 200 may include four Mecanum wheels 210, wherein two Mecanum wheels 210 For the first Mecanum wheel, other two Mecanum wheel 210 is the second Mecanum wheel, the side on chassis 100 (such as it is left Side) for one the first Mecanum wheel of setting as front-wheel and second Mecanum wheel as rear-wheel, the other side on chassis is (right Side) second Mecanum wheel is set as front-wheel and first Mecanum wheel as rear-wheel;For another example running gear 200 may include eight Mecanum wheels 210, wherein four Mecanum wheels 210 are the first Mecanum wheel, four additional Mecanum wheel 210 is the second Mecanum wheel, and along vertical sequence, the left side on chassis 100 can be arranged alternately first The right side of Mecanum wheel, the second Mecanum wheel, the first Mecanum wheel and the second Mecanum wheel, chassis 100 can hand over For the second Mecanum wheel of setting, the first Mecanum wheel, the second Mecanum wheel and the first Mecanum wheel.
In addition, the travelling performance that cooperation is promoted, passes through the vibration damping list of setting connection pressure-bearing type swing arm 120 and vehicle frame 110 Member 220, can correspondingly increase the stability of aerial lift device.Specifically, Mecanum wheel 210 has certain cross-country ability It can, it is thus possible to need to be arranged independent suspension structure (i.e. damper unit 220) come pulsatile impact load when reducing cross-country.Pass through So that damper unit 220 is articulated with pressure-bearing type swing arm 120, can be further improved the obstacle climbing ability of aerial lift device.In addition, can With understanding, the damper unit 220 of corresponding number is can be set in corresponding each Mecanum wheel 210.
Wherein, damper unit 220 can use various appropriate forms, for example, as shown in figure 3, the damper unit 220 can With the shock-absorbing spring 222 for including hydraulic damper 221 and being set on the outside of the hydraulic damper 221, the hydraulic damper 221 one end and the vehicle frame 110 are hinged, and the other end and the pressure-bearing type swing arm 120 are hinged.By making 222 sets of shock-absorbing spring It is located at 221 outside of hydraulic damper, the structure of damper unit 220 can be made more compact.
In the present invention, the running gear 200 may include the hoofing part electricity for driving the Mecanum wheel 210 Machine 230, the aerial lift device may include the control unit for controlling the travel driving motor 230.Thus, it is possible to The operation of travel driving motor 230 is controlled by control unit, the movement of Mecanum wheel 210 is then controlled, to control row The movement of walking apparatus 200.
Preferably, as shown in Fig. 2, the aerial lift device can also include the laser being electrically connected with the control unit Radar 500.By be arranged laser radar 500, can scan aerial lift device will by above ground portion and thus construct Map.For the accuracy for improving map, multiple laser radars can be set along the height and width direction of aerial lift device 500, or laser radar 500 is set can along height and width direction movably.By laser radar 500 construct map for Indoor environment is especially advantageous, specifically, map can be constructed, indoor environment is presented by map, indicates barrier Shape (such as width), to be avoided when aerial lift device enters.Wherein, the map of building can be transmitted to control Unit processed, so that control unit is arrived at the destination according to specified destination automatic cruising.In addition, aerial lift device (example On workbench 400) display can be set, the map of building can be shown by display, so as to workbench 400 On personnel voluntarily driven according to map.
In addition, as shown in Fig. 2, the aerial lift device can also include that the ultrasound being electrically connected with the control unit is kept away Hinder sensor 600.Ultrasonic obstacle avoidance sensor 600 can incude barrier by the ultrasonic obstacle avoidance sensor 600 of detection reflection, By the way that ultrasonic obstacle avoidance sensor 600 is arranged, control unit can control running gear according to the signal of ultrasonic obstacle avoidance sensor 600 200 movement, to avoid barrier.Due to aerial lift device of the invention can all-around mobile, preferably in high altitude operation At least one ultrasonic obstacle avoidance sensor 600 is all arranged in each side of the periphery of equipment, to cooperate all-around mobile to realize full side The automatic evacuation in position.
In the present invention, described control unit may include chassis controller 710, and the chassis controller 710 is for controlling The travel driving motor 230.Preferably, described to manipulate aerial lift device convenient for the operator on workbench 400 Control unit includes the platform control device 720 being arranged on the workbench 400, and the platform control device 720 can receive The signal of the chassis controller 710 and the behaviour that the travel driving motor 230 can be controlled by the chassis controller 710 Make.More specifically, operation panel has can be set in platform control device 720, can be set on operation panel various operation buttons and/ Or steering wheel, so that the operator on workbench 400 operates.
Wherein, control block diagram of the invention can be as shown in figure 4, aerial lift device of the invention can be set and wheat The corresponding travel driving motor 230 of quantity of Ke Namu wheel 210, chassis controller 710 can be controlled separately each.
Moreover it is preferred that the aerial lift device includes the display being arranged on workbench 400 and shows with described The case where showing the camera 800 of device electrical connection, being observed so as to operator according to camera 800 operates aerial lift device.Its In, camera 800, which can be, can operate mobile, be to operate camera 800 and to be moved to the position for being not easy to observe and check No there are barriers, to monitor the surrounding enviroment of aerial lift device in real time.
In addition, for the map convenient for showing building to operator, the laser radar 500 can be manipulated with the platform Device 720 is electrically connected.For convenient for making evacuation reaction in time according to the signal of ultrasonic obstacle avoidance sensor 600, the ultrasound avoidance is passed Sensor 600 can be electrically connected with the chassis controller 710.
In addition, control unit of the invention can also control other electric devices of aerial lift device.For example, the liter Falling unit 300 includes pump motor 310, and the chassis controller 710 is also used to control the pump motor 310.In addition, of the invention Aerial lift device can have the battery for powering to electric device (such as travel driving motor 230 and pump motor 310) B。
Since aerial lift device of the invention has more flexible mobility and cross-country ability, for the peace for ensuring high altitude operation Quan Xing, it is preferable that the aerial lift device includes the supporting leg 900 that is installed on the chassis 100 and can stretch.Exist as a result, When aerial lift device is mobile, supporting leg 900 pack up without with ground face contact;When aerial lift device is mobile in place, pass through lifting 300 lift operation platform 400 of device, can for the stabilization for ensuring workbench 400 when operator is ready for high altitude operation It is supported in ground first to stretch out supporting leg 900, so that Mecanum wheel 210 is detached from ground, preferably to ensure that chassis 100 being capable of phase Ground will not be moved.Thereby, it is possible to improve stability and operator that aerial lift device enters to cheat operation in operation The safety of movement on platform 400.
Aerial lift device of the invention can be the various specific equipment for being suitable for movement with workbench 400.Example It such as, can be masts type aerial lift device or scissor-type aerial lift device according to the concrete form of lifting device 300.Fig. 1 Shown is scissor-type aerial lift device, and lifting device 300 further includes the scissor arms 320 driven by pump motor 310, work The top of scissor arms 320 is arranged in platform 400.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited thereto.At this It, can be with various simple variants of the technical solution of the present invention are made in the range of the technology design of invention.The present invention includes each tool Body technique feature is combined in any suitable manner.In order to avoid unnecessary repetition, the present invention is to various possible groups No further explanation will be given for conjunction mode.But it should also be regarded as the disclosure of the present invention for these simple variants and combination, belongs to Protection scope of the present invention.

Claims (9)

1. a kind of aerial lift device, which is characterized in that the aerial lift device includes chassis (100), lifting device (300) With workbench (400), the lifting device (300) is installed on the chassis (100), is arranged with driving in the lifting device (300) workbench (400) lifting on, the chassis (100) include vehicle frame (110), pressure-bearing type swing arm (120) and walking dress It sets (200), the running gear (200) includes Mecanum wheel (210) and damper unit (220), the Mecanum wheel (210) for driving the chassis (100) all-around mobile, one end and the vehicle frame (110) of the damper unit (220) are cut with scissors It connects, the other end and the pressure-bearing type swing arm (120) are hinged.
2. aerial lift device according to claim 1, which is characterized in that the running gear (200) includes the first wheat Ke Namu wheel and the second Mecanum wheel, the orientation of the roller of first Mecanum wheel and second Mecanum The orientation of the roller of wheel is on the contrary, the same side of the chassis (100) is arranged alternately first Mecanum wheel and second Mecanum wheel, the quantity of the Mecanum wheel of the same side of the chassis (100) are even number, the difference of the chassis (100) First Mecanum wheel and the second Mecanum wheel is respectively set in the corresponding position of side.
3. aerial lift device according to claim 1, which is characterized in that the damper unit (220) includes hydraulic resistance Buddhist nun's device (221) and the shock-absorbing spring (222) being set on the outside of the hydraulic damper (221), the hydraulic damper (221) Hingedly, the other end and the pressure-bearing type swing arm (120) are hinged for one end and the vehicle frame (110).
4. aerial lift device according to claim 1, which is characterized in that the running gear (200) includes for driving The travel driving motor (230) of the Mecanum wheel (210) is moved, the aerial lift device includes for controlling the walking The control unit of driving motor (230), the aerial lift device further include the laser radar being electrically connected with the control unit (500) and/or ultrasonic obstacle avoidance sensor (600).
5. aerial lift device according to claim 4, which is characterized in that described control unit includes chassis controller (710) and platform control device (720) on the workbench (400) is set, the chassis controller (710) is for controlling The travel driving motor (230), the platform control device (720) can receive the signal of the chassis controller (710) simultaneously The operation of the travel driving motor (230) can be controlled by the chassis controller (710).
6. aerial lift device according to claim 5, which is characterized in that the aerial lift device includes being arranged in institute The camera (800) stating the display on workbench (400) and being electrically connected with the display.
7. aerial lift device according to claim 5, which is characterized in that the laser radar (500) and the platform Control device (720) electrical connection, the ultrasound obstacle avoidance sensor (600) are electrically connected with the chassis controller (710).
8. aerial lift device according to claim 5, which is characterized in that the lifting device (300) includes pump motor (310), the chassis controller (710) is also used to control the pump motor (310).
9. aerial lift device described in any one of -8 according to claim 1, which is characterized in that the aerial lift device Including the supporting leg (900) that is installed on the chassis (100) and can stretch.
CN201811513237.4A 2018-12-11 2018-12-11 Aerial lift device Pending CN109650302A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811513237.4A CN109650302A (en) 2018-12-11 2018-12-11 Aerial lift device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811513237.4A CN109650302A (en) 2018-12-11 2018-12-11 Aerial lift device

Publications (1)

Publication Number Publication Date
CN109650302A true CN109650302A (en) 2019-04-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811513237.4A Pending CN109650302A (en) 2018-12-11 2018-12-11 Aerial lift device

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CN (1) CN109650302A (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102040176A (en) * 2010-12-27 2011-05-04 中国人民解放军军事交通学院 Electric omnidirectional mobile lift
CN203006842U (en) * 2012-12-04 2013-06-19 南京尤马特机械有限公司 Self-walking scissor fork type lifting platform
CN204821767U (en) * 2015-08-17 2015-12-02 马德海 Qxcomm technology's track based on mecanum wheel
CN106495056A (en) * 2016-11-10 2017-03-15 北京特种机械研究所 For the omni-directional mobile robots that platen changes the outfit
CN206217525U (en) * 2016-08-16 2017-06-06 中国矿业大学 The dual-purpose all-around mobile carrying platform of wheel track
CN206501926U (en) * 2017-02-21 2017-09-19 青岛霍博智能设备有限公司 A kind of all-around mobile formula ladder truck
CN107207049A (en) * 2014-12-16 2017-09-26 奥姆尼罗尔股份公司 Mecanum wheel car and operation method
CN206858070U (en) * 2017-05-27 2018-01-09 西安科技大学 Direction movement fork truck
CN107758567A (en) * 2017-11-10 2018-03-06 徐州工程学院 A kind of intelligent mounting-dismounting device for warehouse freezer
CN207225176U (en) * 2017-05-09 2018-04-13 青岛科技大学 A kind of drum-type intelligent transport car

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102040176A (en) * 2010-12-27 2011-05-04 中国人民解放军军事交通学院 Electric omnidirectional mobile lift
CN203006842U (en) * 2012-12-04 2013-06-19 南京尤马特机械有限公司 Self-walking scissor fork type lifting platform
CN107207049A (en) * 2014-12-16 2017-09-26 奥姆尼罗尔股份公司 Mecanum wheel car and operation method
CN204821767U (en) * 2015-08-17 2015-12-02 马德海 Qxcomm technology's track based on mecanum wheel
CN206217525U (en) * 2016-08-16 2017-06-06 中国矿业大学 The dual-purpose all-around mobile carrying platform of wheel track
CN106495056A (en) * 2016-11-10 2017-03-15 北京特种机械研究所 For the omni-directional mobile robots that platen changes the outfit
CN206501926U (en) * 2017-02-21 2017-09-19 青岛霍博智能设备有限公司 A kind of all-around mobile formula ladder truck
CN207225176U (en) * 2017-05-09 2018-04-13 青岛科技大学 A kind of drum-type intelligent transport car
CN206858070U (en) * 2017-05-27 2018-01-09 西安科技大学 Direction movement fork truck
CN107758567A (en) * 2017-11-10 2018-03-06 徐州工程学院 A kind of intelligent mounting-dismounting device for warehouse freezer

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Application publication date: 20190419

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