EP4448425A1 - Sicherungsvorrichtung - Google Patents
SicherungsvorrichtungInfo
- Publication number
- EP4448425A1 EP4448425A1 EP22817219.3A EP22817219A EP4448425A1 EP 4448425 A1 EP4448425 A1 EP 4448425A1 EP 22817219 A EP22817219 A EP 22817219A EP 4448425 A1 EP4448425 A1 EP 4448425A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- barrier
- carriage
- ramp
- safety device
- clutch
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/003—Restraining movement of a vehicle at a loading station using means not being part of the vehicle
Definitions
- the present invention relates to a safety device for safeguarding the loading and unloading of wagons.
- a safety device for safeguarding the loading and unloading of wagons.
- a safety device comprising a hook mounted on a vertical flank of a loading dock, intended to engage behind a crossbar of a vehicle docked at the loading dock and thus prevent the vehicle from rolling off the dock.
- the hook When a vehicle is parked at the ramp, the hook must be raised from a resting position against the flank, pivoted, and then lowered again to secure the vehicle. This operation is tedious because the hook is only accessible from above through a gap between the ramp and the vehicle, which should be as narrow as possible so as not to complicate loading and unloading. It is not immediately apparent whether the hook has actually reached a position in which it effectively secures the vehicle.
- One object of the present invention is to create a safety device that prevents loading and unloading when the vehicle is unsecured.
- a safety device for securing the loading or unloading of a car at a Ramp in addition to a coupling, between a securing position in which it is coupled to a carriage to fix it in a loading or unloading position on an edge of the ramp, and a release position in which it is detached from the carriage to a Allowing the carriage to move away from the ramp is adjustable, comprises a barrier which blocks the ramp in a closed position and releases the ramp in an open position, the barrier being coupled to the clutch in order to prevent the barrier from opening only in the secured position of the to enable coupling.
- the coupling is preferably self-closing, i.e. it can be moved into the safety position by driving a carriage towards the safety device up to the loading or unloading position.
- Such a self-closing function can be implemented in a simple manner by providing the coupling with a hook that can be pivoted about an axis and is urged into a rest position, with an inclined surface of the hook being arranged so that it can be prevented by advancing the carriage, in particular by contact with an edge of the Carriage to be deflected from the rest position in the direction of the loading or unloading position, so that when the wall of the carriage has passed the inclined surface of the hook, it can engage in a recess of the carriage lying behind the wall in the direction of the rest position.
- the barrier can also be coupled to the clutch in order to put the clutch in the release position by closing the barrier. In this way, the vehicle can leave the position on the ramp unhindered as soon as the barrier is closed.
- the barrier should better be closed for safety reasons; at the same time, in this case, there should be the possibility that the coupling can assume the securing position in order to secure a vehicle on the ramp before the barrier opens. Therefore, an actuating element that is different from the barrier is preferably provided, by means of which the coupling can be moved into the release position when the barrier is closed. In the open position of the barrier, the coupling should be fixed in the secured position to prevent the coupling from being released unintentionally.
- the barrier and the clutch can be connected in particular via a cable. Since this generally only transmits forces in one direction, it can on the one hand prevent movement of the coupling into the release position when the barrier is open, but at the same time allow both the release position and the securing position of the coupling when the barrier is closed.
- the cable may be arranged to be pulled in a first direction by overriding the clutch to its release position and in a second direction by opening the barrier.
- a suitable dimensioning of the length of the cable pull can then ensure that a transition of the clutch into the release position when the barrier is open is not possible.
- the safety device may also include a pedestal having at least one steep slope and an upper side, the coupling being attached to the steep slope and the upper side forming the ramp.
- the safety device can form a transportable unit that can be placed on a floor, e.g.
- the subject matter of the invention is also a system with a safety device as described above and at least one carriage that can be coupled to the safety device.
- a truck bed should be level with one end of the ramp to allow for easy loading and unloading.
- the carriage should have an edge oriented transversely to a main direction of travel of the carriage, which is arranged in order to deflect the hook of the coupling from a rest position when the carriage approaches the loading or unloading position, and a recess behind the edge which is arranged to allow the hook to move toward the rest position after passing the edge.
- FIG. 1 shows a schematic side view of a carriage as it approaches a safety device according to the invention
- FIG. 3 shows an analogous view of FIG. 2 of the carriage docking on the safety device
- FIG. 1 shows a schematic, partially sectioned side view of a safety device 1 and a front part of a carriage 2 which is approaching a steep flank 4, here a vertical flank, of a pedestal 3 of the safety device 1 in order to dock with it.
- the carriage 2 can be of any type, as a preferred application example, the figure shows a carriage 2 that consists of a non-powered trolley 5 and a driverless transport vehicle 6, also known as an AGC (autonomous guided vehicle) or AGC (autonomous guided cart) is composed.
- the trolley 5 essentially comprises a loading area 7 and rollers 8 attached to the four corners of the loading area 7.
- the rollers 8 can each be rotated freely about a vertical axis 9 relative to the loading area 7 in order to be able to adapt to a travel direction specified by the transport vehicle 6 .
- the transport vehicle 6 has a flat, essentially cuboid body, which enables it to drive between two rollers 8 under the loading area 7, to couple it positively to the loading area 7 by raising an adapter (not shown), and thus to drive the trolley 5 and to deliver to a destination such as the backup device 1.
- the transport vehicle 6 can retract the adapter again to release the connection to the trolley 5, the space under the Leave loading area 7 and do other tasks while trolley 5 stays at its destination to be loaded or unloaded.
- the pedestal 3 has an approximately triangular cross-section with the already mentioned steep flank 4, a sloping upper side 10, which forms a ramp that can be walked or driven on, and an underside that rests on the floor 11, e.g. of a workshop.
- the pedestal has a width in the viewing direction of FIG. 1 which corresponds approximately to that of the trolley 5 .
- An edge 12, where the steep flank 4 and the top 10 meet, has essentially the same height above the ground 11 as the loading area 7.
- a barrier 13 may comprise any movable element movable between a closed position, in which it blocks a path over the ramp, and an open position, in which it unblocks the path.
- it comprises, in a manner known per se, a post 14 projecting from one end of the edge 12 and a locking bar 15 pivoted to the post 14.
- the locking bar In the closed position of the barrier 13, as shown in Figure 1, the locking bar extends 15 horizontally, parallel to edge 12 and substantially along its entire length.
- the clutches 16 are provided on the steep flank 4, each adjacent to their longitudinal ends.
- the clutches 16 are located one behind the other in the viewing direction in FIG. 1, which is why only one can be seen in the figure.
- the clutches 16 are designed here as latches 17, i.e. as gravity-operated levers.
- the latches 17 are each two-armed levers, with an outer arm 19 protruding from a horizontal axis 18 beyond the steep flank 4 exerting a greater torque than an inner arm 20 extending in the opposite direction the perspective of FIG. 1, on the latches 17 each have a counterclockwise torque.
- a rest position of the latch 17 is defined in that the inner arm 20 presses against a stop 21 from below.
- An inclined surface 22 is arranged at the distal end of the outer arm 19 in order, as the carriage 2 approaches the flank 4, to hit an edge 23 thereof and to be deflected by it against the torque.
- the edge 23 is part of a bracket 24 on both sides of the Transport vehicle 6 is suspended from the loading area 7 of the trolley and extends in the transverse direction of the trolley 5.
- the inner arm is heavy enough to exert a clockwise restoring moment on the latch and the inclination of an inclined surface at the distal end of the outer arm is opposite to the inclined surface 22 in order to be able to move from an edge of the vehicle 2 , About a lower edge of the loading area 7, to be deflected downwards, and a stop attacks the outer arm.
- the outer arm 19 is in the form of a hook, with a recess 25 for receiving the deflecting edge 23 after it has passed the ramp 22.
- FIG. 2 In order to illustrate the operative connection between the barrier 13 and the latches 17, the edge 12 and the barrier 13 are shown in FIG. 2 in a view rotated by 90° in relation to FIG.
- a cable 26 connects the locking bar 15 to the latches 17 via at least one deflection pulley, here two deflection pulleys 27.
- the cable 26 In the closed position of the barrier 13, shown in Fig. 2 with solid lines, the cable 26 sags without tension and restricts the mobility of the latches 16 not one. These can therefore avoid the pressure of the edge 23 of the vehicle 2 and thus enable the edge 23 to latch in the recesses 25 of the latches 16 .
- the open position of the barrier 13 shown in Fig.
- the cable 26 is taut and thus prevents the latches 17 from pivoting out of their rest position.
- the fact that this prevents the vehicle 2 from docking when the barrier 13 is open is not disruptive, since it forces the barrier 13 to be closed before docking, so that people are kept away from the docking point.
- the length of the cable pull 26 is dimensioned such that if the docking process has not been carried out properly and the latches 17 have been deflected, but the edge 23 of at least one latch 17 has not yet engaged in the recess 25, the barrier 13 is the open one position not reached. Instead, the cable 26 is already tightened in a position of the locking bar 15, which is shown in Fig. 2 by dotted lines. On the one hand, the deviation of locking bar 15 from the open position clearly indicates that the Docking is not properly completed, on the other hand, the locking bar 15 falls back from this position under its own weight into the closed position and thereby prevents loading or unloading of the carriage 2 in an unsecured state.
- Fig. 3 shows the carriage 2 and the security device 1 in the course of the docking process.
- a bow section of the transport vehicle 6 is in a niche of the steep flank 4, between the two latches 17, indented.
- the outer arm 19 is raised into contact with the edge 23, but the carriage 2 has not yet advanced far enough to allow the edge 23 to engage the recess 25. This configuration corresponds to the case described above in which the cable 26 prevents the barrier 13 from reaching the open position.
- the barrier 13 In order to be able to open the coupling 16 again and release the carriage 2 from the docked position, the barrier 13 must first be closed again.
- the cable 26 is now slack again and allows the latches 17 to pivot.
- the stop 21 can be deflected. In the case shown here, for example, the stop 21 is the lower end of a ram whose upper end 27 protrudes above the upper side 10 .
- the clutch 16 can be put into the release position here by a person standing on the top 10 pressing the ram down with his foot so far that the latch 17 releases the edge 23 and the carriage 2 can be driven away.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Handcart (AREA)
- Vehicle Step Arrangements And Article Storage (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021214448.9A DE102021214448A1 (de) | 2021-12-15 | 2021-12-15 | Sicherungsvorrichtung |
| PCT/EP2022/081553 WO2023110242A1 (de) | 2021-12-15 | 2022-11-10 | Sicherungsvorrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4448425A1 true EP4448425A1 (de) | 2024-10-23 |
Family
ID=84369864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22817219.3A Withdrawn EP4448425A1 (de) | 2021-12-15 | 2022-11-10 | Sicherungsvorrichtung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4448425A1 (de) |
| DE (1) | DE102021214448A1 (de) |
| WO (1) | WO2023110242A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US33154A (en) | 1861-08-27 | Improvement in churns | ||
| USRE33154E (en) | 1983-08-24 | 1990-01-30 | Abon Corporation | Vehicle restraint |
| US8547234B2 (en) * | 2004-12-14 | 2013-10-01 | Rite-Hite Holding Corporation | Alarm system for a loading dock |
| US9174811B2 (en) | 2012-09-05 | 2015-11-03 | Rite-Hite Holding Corporation | Vehicle restraints with rotating and translating barriers |
| US9517902B2 (en) * | 2014-06-12 | 2016-12-13 | Nordock, Inc. | Vertically stored telescoping lip leveler |
| US11225824B2 (en) * | 2016-05-03 | 2022-01-18 | Assa Abloy Entrance Systems Ab | Control systems for operation of loading dock equipment, and associated methods of manufacture and use |
| US10086861B1 (en) * | 2017-03-24 | 2018-10-02 | Toyota Motor Engineering & Manufacturing North America, Inc. | Transport wheel restraint |
-
2021
- 2021-12-15 DE DE102021214448.9A patent/DE102021214448A1/de active Pending
-
2022
- 2022-11-10 EP EP22817219.3A patent/EP4448425A1/de not_active Withdrawn
- 2022-11-10 WO PCT/EP2022/081553 patent/WO2023110242A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023110242A1 (de) | 2023-06-22 |
| DE102021214448A1 (de) | 2023-06-15 |
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Legal Events
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