GB2124179A - Anti-roll flap and ramp assembly for a vehicle load lifting apparatus - Google Patents

Anti-roll flap and ramp assembly for a vehicle load lifting apparatus Download PDF

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Publication number
GB2124179A
GB2124179A GB08222049A GB8222049A GB2124179A GB 2124179 A GB2124179 A GB 2124179A GB 08222049 A GB08222049 A GB 08222049A GB 8222049 A GB8222049 A GB 8222049A GB 2124179 A GB2124179 A GB 2124179A
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GB
United Kingdom
Prior art keywords
platform
ramp
flap
edge
roll
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.)
Granted
Application number
GB08222049A
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GB2124179B (en
Inventor
Michael Albert Sidney Marshall
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HENDERSON GROUP
Original Assignee
HENDERSON GROUP
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 HENDERSON GROUP filed Critical HENDERSON GROUP
Priority to GB08222049A priority Critical patent/GB2124179B/en
Publication of GB2124179A publication Critical patent/GB2124179A/en
Application granted granted Critical
Publication of GB2124179B publication Critical patent/GB2124179B/en
Expired legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60PVEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/44Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading having a loading platform thereon raising the load to the level of the load-transporting element
    • B60P1/4414Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading having a loading platform thereon raising the load to the level of the load-transporting element and keeping the loading platform parallel to the ground when raising the load
    • B60P1/4421Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading having a loading platform thereon raising the load to the level of the load-transporting element and keeping the loading platform parallel to the ground when raising the load the loading platform being carried in at least one vertical guide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60PVEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/44Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading having a loading platform thereon raising the load to the level of the load-transporting element
    • B60P1/4457Means for immobilising the load or preventing it from rolling off during lifting; Man-rails

Abstract

An anti-roll flap and ramp assembly for a vehicle load lifting apparatus, including an elongated ramp member (1) hingedly connectible along one edge to the outer free edge of the platform (7) for pivotal movement between a horizontal inverted stowage position on top of the platform load bearing surface (9) and a substantially horizontal extended position to which it provides a ramp surface from the ground to the platform, and at least one elongated plate-like flap member (2) hingedly connectible along one edge to the outer free edge of the platform (7) at hinge points separate from the ramp member hinge points, for pivotal movement between a lowered position in which it lies substantially flat with respect to the platform load bearing surface (9) and a raised position to form an anti-roll obstruction, the ramp member (1) having stop means for allowing the ramp member (1) to pivot to a limited extent below the horizontal position when the platform (7) is raised from the horizontal, and having a nose portion projecting from said ramp member edge operatively to engage and lift the at flap member (2) into the raised anti-roll obstruction position when the ramp member (1) pivots below the substantially horizontal extended ramp position. <IMAGE>

Description

SPECIFICATION Anti-roll flap and ramp assembly for a vehicle load lifting appparatus This invention relates to an anti-roll flap and ramp assembly for a vehicle load lifting apparatus and concerns, particularly but not exclusively, such an assembly for a vehicle load lifting apparatus in the form of a vehicle tail lift.
Such a vehicle load lifting apparatus usually includes a platform slidably mounted at one end in a pair of spaced apart substantially vertically extending guide channels and moveable up and down in the channels by means of electric motor or hydraulic ram operated cables housed in the channels. Such a vehicle load lifting apparatus will hereinafter be referred to as "of the kind hereinbefore defined".The channels may be mounted one on either side of a rear opening of a vehicle in the case of a tail lift, and the platform, which can be pivoted between substantially vertical and horizontal positions, may be moved between a vertical raised stowed position in which it closes at least partially the vehicle rear opening at or above the vehicle opening floor level, a horizontal pivoted out raised working position in which it lies at the level of the vehicle opening floor, and a horizontal pivoted out lower working position in which it lies substantially at ground level. Thus loads can be put onto the horizontal platform at ground level, the platform raised to vehicle floor level for removal of loads from the platform into the vehicle and vice versa, and the platform can be pivoted back into the vertical position to act as a vehicle opening closure means or tail gate.Alternatively such a vehicle load lifting apparatus may be mounted at any other convenient location on the vehicle, such as on the vehicle side.
Wherever the vehicle load lifting apparatus is located, one of the associated drawbacks is how to introduce a heavy, wheeled, load onto the platform in the horizontal pivoted out lower working position and prevent the load from running back over the free outer edge of the platform when the platform and load are being raised into the horizontal raised position. Conventionally ramps are provided which are hinged to the free outer edge of the platform and which form an inclined run up surface for wheeled loads from the ground to the platform in the platform horizontal position.One solution which has been proposed is to make the ramps, which are pivotable between a horizontal extended run up position and a horizontal stowed position in which they are folded back through 180 into an inverted position on top of the platform, capable of taking up an intermediate vertical stop position at the platform free outer edge. Whilst these ramps effectively act as anti-roll means in the intermediate vertical position they must be placed manually in this position by the operator and this is frequently not done or not possible to do, as the ramps may be heavy, dirty and too low for convenient access.Consequently operators frequently partially raise the platform with the load on it to waist height before lifting the ramps into the intermediate vertical position and the load therefore is capable of rolling off the outer free edge of the platform until the ramps have been lifted into the intermediate vertical position.
There is thus a need for a ramp with generally improved anti-roll means, preferably with anti-roll means which does not require manual actuation by the operator.
According to the present invention there is provided an anti-roll flap and ramp assembly for a vehicle load lifting apparatus of the kind hereinbefore defined, including at least one elongated ramp member hingedly connectible along one edge to the outer free edge of the platform for pivotal movement between a horizontal inverted stowage position on top of the platform load bearing surface and a substantially horizontal extended position in which it provides an inclined run up surface from the ground to the platform load bearing surface in the platform horizontal pivoted out lower working position, and at least one elongated plate like member hingedly connectible along one edge to the outer free edge of the platform at hinge points separate from the ramp member hinge points, for pivotal movement between a lowered position in which it lies substantially flat with respect to the platform load bearing surface and extends between the platform load bearing surface and the substan tiaily horizontal extended position ramp member and a raised position in which it is inclined with respect to the platform load bearing surface about its hinge points with its free edge remote from the hinge points raised above the platform load bearing surface to form an anti-roll obstruction to passage of a load off the platform over the platform outer free edge, the at least one ramp member having stop means for allowing the ramp member to pivot to a limited extend below the substantially horizontal extended run up position when the platform is raised from the horizontal lower working position, and having at least one nose portion projecting from said one ramp member edge beyond and transverse to the ramp member hinge axis operatively to engage and lift the at least one flap member into the raised anti-roll obstruction position when the at least one ramp member pivots below the substantially horizontal extended run up position.
Thus an anti-roll flap and ramp assembly of the invention operates in an automatic manner to raise the anti-roll flap member into the obstructing position when the platform is raised with the ramp member extended. Additionally the anti-roll flap member is lowered automatically into the lowered substantially flat position when the ramp member is raised from the position below the substantially horizontal extended run up position either by contact of the ramp member with the ground or by the operator manually raising the ramp member passed the substantially horizontal extended run up position towards the horizontal inverted stowage position.
Advantageously the anti-roll flap and ramp assembly of the invention includes an elongated edge member attachable to the outer free edge of the platform to extend therealong and dimensioned to leave at the platform outer free edge a portion recessed below the platform load bearing surface, the at least one elongated ramp member and at least one elongated plate like flap member being directly hingedly connectible to the elongated edge member and hence indirectly to the platform and the recessed portion in the edge member providing a housing for the at least one flap member in the lowered substantially flat position.
Preferably at least two nose portions are provided on the at least one ramp member and are located one at each of the side edges of the ramp member operatively to extend below and engage the undersurface of the at least one flap member.
Conveniently the hinge axes of the ramp and flap members extend normally coaxially and the ramp members co-operate in the vicinity of the hinge points to provide means for retaining the flap member when in the anti-roll obstruction position against movement, as a result of contact by a load on the platform tending to pivot the flap member beyond the anti-roll obstruction position.
Preferably the stop means is in the form of a shoulder provided on the underside of the ramp member with respect to the run up surface, for engagement against a stop provided on part of the ramp member hinges.
Conveniently the ramp member hinges include a hinge pin carried by a plate mountable for limited sliding movement on the platform outer free edge or on the elongated edge member to permit the hinge pin and thus the hinge axis of the ramp member to move out of alignment with the flap member hinge axis to enable the at least one ramp member to pivot into the horizontal inverted stowed position on top of the flap member and platform load bearing surface.
For a better understanding of the present invention and to show how the same may be carried into effect, reference will now be made, by way of example, to the accompanying drawings, in which: Figure 1 is a perspective diagrammatic view of a vehicle load lifting platform in operative association with an anti-roll flap and ramp assembly according to a first embodiment of the invention, shown in an anti-roll obstruction position with respect to a wheeled load on the platform.
Figure 2 is a diagrammatic perspective view of Fig. 1 showing the anti-roll flap and ramp assembly in a non anti-roll position enabling the wheeled load on the platform to be rolled off the platform down the ramp assembly, Figure 3 is a diagrammatic perspective view of part of the assembly of the invention of Figs. 1 and 2 showing ramp members thereof in a horizontal inverted stowage position on top of the platform load bearing surface, Figure 4 is a side end view of Fig. 3, Figure 5 is an exploded perspective diagrammatic view of part of an anti-roll flap and ramp assembly of the invention, Figure 6 is a partially sectioned view similar to that of Fig. 4 through an anti-roll flap and ramp assembly of the invention in a raised anti-roll obstruction position similar to that shown in Fig. 1, Figure 7 is a diagrammatic perspective view of an anti-roll flap and ramp assembly according to the invention in the position shown in Fig. 2, Figure 8 is a diagrammatic perspective view, to an enlarged scale of a detail of Fig.
7, and Figure 9 is a partially sectioned end view of an anti-roll flap and ramp assembly according to the invention in a substantially horizontal extended run up position in operative association with part of the platform.
An anti-roll flap and ramp assembly according to one embodiment of the invention is shown in the accompanying drawings in operative association with a vehicle load lifting apparatus in the form of a vehicle tail lift. It is of course, to be understood, that such an antiroll flap and ramp assembly can be used with any other form of vehicle load lifting apparatus as desired.
The anti-roll flap and ramp assembly of the invention can be made of any convenient materials such as metal in any convenient manner and includes at least one elongated ramp member 1, at least one elongated platelike flap member 2, stop means in the form of a shoulder 3 on the ramp member 1 and a stop 4, at least one nose portion 5 on the ramp member 1 and an optional elongated edge member 6.
The ramp member 1 is hingedly connected along one edge to the outer free edge of the platform 7 either directly (not shown) or indirectly as illustrated via the edge member 6.
For convenience the assembly will hereinafter be described as including the optional edge member 6.
Thus the edge member 6, which conveniently is in the form of a hollow box section, is attached to the outer free edge of the platform 7 to extend therealong and is dimensioned to leave at the platform outer free edge, a portion 8 recessed below the platform load bearing surface 9. The ramp member 1 is hingedly connected to the edge member 6 by the hinge pin 10 which conveniently are each carried by a plate 11 mounted for limited sliding movement about a screw forming the stop 4 which screw connects the plate 11 to the outer free edge of the edge member 6 as shown in Figs. 5 and 9. To this end a slotted keep plate 1 2 is provided on the outer free edge of the edge member 6 as shown in Fig.
5 and the plate 11 slots between the keep plate 1 2 and the edge member 6 and is retained therein by the stop screw 4 passing through a bore in the keep plate 12, a vertical slot 1 3 extending in the direction of sliding movement of the plate 11 in the plate 11 and a bore in the edge member 6.Thus the hinge pins 10 extend in a line along the outer free edge of the edge member 6 to provide a hinge axis for the ramp member 1 about which it is pivotable smoothly between a horizontal inverted stowage position on top of the platform load bearing surface 9 as shown in Figs. 3 and 4 and a substantially horizontal extended position, as shown in Figs. 2, 7 and 9, in which it provides an inclined run up surface from the ground to the platform load bearing surface 9 in the platform horizontal pivoted out lower working position against the ground.
The plate-like flap member 2 is hingedly connected along one edge to the outer free edge of the platform or edge member 6 at hinge points provided by co-operating hinge pins 14 on the flap member 2 and hinge tubes on the edge member 6, separate from the ramp member hinge points as shown in Fig. 5, for pivotal movement of the flap member 2 between a lowered position as shown in Fig. 9 in which it lies substantially flat with respect to the platform load bearing surface 6 and extends between the platform load bearing surface 6 and the substantially horizontal extended position ramp member 1, and a raised position as shown in Figs. 1 and 6 in which it is inclined with respect to the platform load bearing surface 9 about its hinge points with its free edge 2a remote from the hinge points raised above the platform load bearing surface 9 to form an antiroll obstruction to prevent passage of a load 1 6 off the platform over the platform outer free edge.
The flap member 2 is housed in the recessed portion 8 when in the lowered position in which it lies substantially flat with respect to the platform load bearing surface 9.
The nose portion 5, which in this embodiment is in the form of two nose portions 5 provided on the ramp member 2 one at each of the side edges of the ramp member 2 project from the ramp member edge beyond and transverse to the ramp member hinge axis operatively to engage and lift the flap member 2 about its hinge axis into the raised anti-roll obstruction position when the ramp member 1 pivots below the substantially low horizontal extended run up position as shown in Figs. 1 and 6.
The ramp member 1 automatically pivots to a limited extent below the substantially horizontal extending run up position when the platform 7 is raised from the horizontal low working position with the ramp member 1 still in the substantially horizontal extended run up position. This is done automatically by gravity acting on the ramp member 1 pivoting it about its hinge axis until the stop means shoulder 5 provided on the underside of the ramp member 1 with respect to the run up surface engages against the stop 4 or against a similarly positioned stop surface provided on part of the ramp member hinges as shown in Fig. 6. When this occurs the nose portions 5, which extend below the flap member 2, engage the undersurface of the flap member 2 and pivot it about its hinge axis into the raised anti-roll obstruction position as shown in Fig.
6. The flap member 2 is prevented from being forced to pivot beyond the anti-roll obstruction position under the action of a load 1 6 there against, by means of co-operation between the flap member and ramp member hinge points in the vicinity of the hinge points to provide means for retaining the flap member 2 against pivotal movement beyond the raised anti-roll obstruction position.
The flap member 2 is, of course, lowered back into the lowered substantially flat position in the recess portion 8 forming a housing therefore, when the ramp member 1 is lifted back in to the substantially horizontally extended run up position either manually by the operator or by means of the ramp member engaging the ground. To return the ramp member 1 to the horizontal inverted stowage position on top of the platform load bearing surface 9 it is merely necessary for the operator to lift up the ramp member 1 and pivot it about its hinge points until it takes up a flat position on top of the load bearing surface 9 as shown in Figs. 3 and 4.To enable the ramp 1 to clear the hinge points for the lowered flap member 2 and take up the horizontal inverted stowage position on top of the platform load bearing surface 9 and lowered flap member 2, the hinged plate 11 slides upwardly about the stop screw 4 by means of the slot 1 3 so lifting the hinge axis of the ramp member 5 above and out of line with the hinge axis of the flap member 2 with which it is normally coaxial. This can be seen in Fig. 4 in which the plate 11 is in the raised position with the ramp member hinge axis out of line with the flap member hinge axis and in Fig. 9 in which the plate 11 is in the lowered position with the ramp member and flap member hinge axis coaxial.
More than one such anti-roll flap and ramp assembly can be provided on a platform of a vehicle load lifting apparatus, for example two such assemblies as shown in Figs. 1, 2 and 3.
The flap member 2 is retained, as aforesaid, against pivotal movement beyond the raised anti-roll obstruction position, by co-operation between the hinge points of the members 2 and 1. Conveniently this co-operation is by means of a stop edge 1 7 provided on a mount 1 8 for each hinge pin 14 engaging the leading surface 1 9 of the edge member 6.
Thus movement of the raised flap member 2 beyond its obstruction position is prevented by contact between the stop edges 1 7 and the surface 1 9 of the edge member 6. Advantageously the mounts 1 8 and edges 1 7 are dimensioned and arranged to provide a stop at a maximum angle from the horizontal of about 35 for the flap member 2.

Claims (8)

1. An anti-roll flap and ramp assembly for a vehicle load lifting apparatus of the kind hereinbefore defined, including at least one elongated ramp member hingedly connectible along one edge to the outer free edge of the platform for pivotal movement between a horizontal inverted stowage position on top of the platform load bearing surface and a substantially horizontal extended position in which it provides an inclined run up surface from the ground to the platform load bearing surface in the platform horizontal pivoted out lower working position, and at least one elongated plate-like flap member hingedly connectible along one edge to the outer free edge of the platform at hinge points separate from the ramp member hinge points, for pivotal movement between a lowered position in which it lies substantially flat with respect to the platform load bearing surface and extends between the platform load bearing surface and the substantially horizontal extended position ramp member and a raised position in which it is inclined with respect to the platform load bearing surface about its hinge points with its free edge remote from the hinge points raised above the platform load bearing surface to form an anti-roll obstruction to passage of a load off the platform over the platform outer free edge, the at least one ramp member having stop means for allowing the ramp member to pivot to a limited extent below the substantially horizontal extended run up position when the platform is raised from the horizontal lower working position, and having at least one nose portion projecting from said one ramp member edge beyond and transverse to the ramp member hinge axis operatively to engage and lift the at least one flap member into the raised anti-roll obstruction position when the at least one ramp member pivots below the substantially horizontal extended run up position.
2. An assembly according to claim 1, including an elongated edge member attachable to the outer free edge of the platform to extend therealong and dimensioned to leave at the platform outer free edge a portion recessed below the platform load bearing surface, the at least one elongated ramp member and at least one elongated plate like flap member being directly hingedly connectible to the elongated edge member and hence indirectly to the platform and the recessed portion in the edge member providing a housing for at least one flap member in the lowered substantially flat position.
3. An assembly according to claim 1 or claim 2, wherein at least two nose portions are provided on the at least one ramp member and are located one at each of the side edges of the ramp member operatively to extend below and engage the undersurface of the at least one flap member.
4. An assembly according to any one of claims 1 to 3, wherein the hinge axes of the ramp and flap members extend normally coaxially and the ramp and flap members cooperate in the vicinity of the hinge points to provide means for retaining the flap member when in the anti-roll obstruction position against movement, as a result of contact by a load on the platform tending to pivot the flap member beyond the anti-roll obstruction position.
5. An assembly according to any one of claims 1 to 4, wherein the stop means is in the form of a shoulder provided on the underside of the ramp member with respect to the run up surface, for engagement against a stop provided on part of the ramp member hinges.
6. An assembly according to claim 2, wherein the ramp member hinges include a hinge pin carried by a plate mountable for limited sliding movement on the platform outer free edge or on the elongated edge member to permit the hinge pin and thus the hinge axis of the ramp member to move out of alignment with the flap member hinge axis to enable the at least one ramp member to pivot into the horizontal postion on top of the flap member and platform load bearing surface.
7. An anti-roll flap and ramp assembly for a vehicle load lifting apparatus, substantially as hereinbefore described with reference to the accompanyuing drawings.
8. A vehicle load lifting apparatus fitted with an anti-roll flap and ramp assembly according to any one of claims 1-6.
GB08222049A 1982-07-30 1982-07-30 Anti-roll flap and ramp assembly for a vehicle load lifting apparatus Expired GB2124179B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08222049A GB2124179B (en) 1982-07-30 1982-07-30 Anti-roll flap and ramp assembly for a vehicle load lifting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08222049A GB2124179B (en) 1982-07-30 1982-07-30 Anti-roll flap and ramp assembly for a vehicle load lifting apparatus

Publications (2)

Publication Number Publication Date
GB2124179A true GB2124179A (en) 1984-02-15
GB2124179B GB2124179B (en) 1986-04-09

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5683221A (en) * 1994-07-11 1997-11-04 Maxon Industries, Inc. Lift platform with cart stop
EP1093963A1 (en) * 1999-10-20 2001-04-25 Ross &amp; Bonnyman Limited Resilient hinge
GB2403204A (en) * 2003-06-26 2004-12-29 Ray Smith Group Plc Tail lift with ramp portion
US20140205404A1 (en) * 2013-01-22 2014-07-24 GM Global Technology Operations LLC Half-tilt bed unloading system
EP3190002A1 (en) * 2015-04-09 2017-07-12 William Mark Adams Goods movement apparatus
US20210402908A1 (en) * 2020-06-25 2021-12-30 GM Global Technology Operations LLC Loading and unloading systems and methods
CN117509357A (en) * 2024-01-04 2024-02-06 山东运川智能制造科技有限公司 Barrier-free self-propelled arm lifting platform protection structure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2055741A (en) * 1979-08-03 1981-03-11 Allen Davies & Co Ltd Method and apparatus for attaching articles to a support card
GB2105675A (en) * 1979-08-03 1983-03-30 Alcan Int Ltd Lift mechanism for a vehicle tail-board or other load platform

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2055741A (en) * 1979-08-03 1981-03-11 Allen Davies & Co Ltd Method and apparatus for attaching articles to a support card
GB2105675A (en) * 1979-08-03 1983-03-30 Alcan Int Ltd Lift mechanism for a vehicle tail-board or other load platform

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5683221A (en) * 1994-07-11 1997-11-04 Maxon Industries, Inc. Lift platform with cart stop
EP1093963A1 (en) * 1999-10-20 2001-04-25 Ross &amp; Bonnyman Limited Resilient hinge
GB2403204A (en) * 2003-06-26 2004-12-29 Ray Smith Group Plc Tail lift with ramp portion
GB2403204B (en) * 2003-06-26 2006-06-21 Ray Smith Group Plc A tail lift
US20140205404A1 (en) * 2013-01-22 2014-07-24 GM Global Technology Operations LLC Half-tilt bed unloading system
US9139121B2 (en) * 2013-01-22 2015-09-22 GM Global Technology Operations LLC Half-tilt bed unloading system
EP3190002A1 (en) * 2015-04-09 2017-07-12 William Mark Adams Goods movement apparatus
US20210402908A1 (en) * 2020-06-25 2021-12-30 GM Global Technology Operations LLC Loading and unloading systems and methods
US11254254B2 (en) * 2020-06-25 2022-02-22 GM Global Technology Operations LLC Loading and unloading systems and methods
CN117509357A (en) * 2024-01-04 2024-02-06 山东运川智能制造科技有限公司 Barrier-free self-propelled arm lifting platform protection structure
CN117509357B (en) * 2024-01-04 2024-03-15 山东运川智能制造科技有限公司 Barrier-free self-propelled arm lifting platform protection structure

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Publication number Publication date
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