JPH06271050A - Cargo transfer device in elevator - Google Patents

Abstract

PURPOSE:To transfer a cargo between an elevation frame and a transfer conveyor at each floor smoothly constantly by detecting stop position error of an elevation frame, and resilient elongation of a suspension body suspending the elevation frame automatically, and correcting a mounting conveyor installed on the elevation frame vertically. CONSTITUTION:A detection switch V for position correction provided on a mounting conveyor installed on an elevation frame E is provided to get closer to/apart from a position deflection detector provided at each floor, so the mounting conveyor 10 is corrected to a proper position by its getting closer to/apart from it, and by setting and holding the mounting conveyor 10 within a standard level through rotation of an eccentric cam by position detection by the detection switch V for position correction, thereby it is set almost at the same position with an upper running surface of a transport conveyor at each floor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cargo which is movably mounted on an elevating platform which is vertically lifted when the cargo is carried in or out of a desired floor of a carrying conveyor by easily correcting the stop position of the carrying conveyor. The present invention relates to a cargo transfer device in an elevator that enables smooth transfer.

[0002]

2. Description of the Related Art It is possible to transport a roller or chain mounted on a vertically movable hoist to a cargo conveyor from a desired floor to or from a desired floor so that a desired cargo can be transported. Transfers between floors.

[0003]

In the case of freight transfer as described above, a weight is fixed to the other end of a suspended body such as a wire rope or a chain assembled on the upper surface of the lifting platform. It hangs up, the middle of this suspension is hung on a rotating car driven by a prime mover set at the upper end of the hoisting space, and the cargo is carried in or out to the desired floor by elevating the elevating platform. The suspended body elastically expands due to the weight difference between when there is no cargo on the lifting platform, in the so-called empty state, and when the cargo is loaded, in the so-called actual loading state. Due to an error in the stop position, a level difference is created with the upper traveling surface of the conveyor that is installed on the floor of the desired floor, and the upper traveling surface of the conveyor that is the loading side or the unloading side of the cargo is the pallet placed on the loading conveyor. When higher than the bottom surface, The rollers or chains attached to the conveyor make it difficult to move the pallet to the pallet, making it difficult or impossible to transfer the pallet to the conveyor. The larger the load fluctuation and the larger lifting height, the more it is affected and the larger it becomes. And such a phenomenon has been conventionally performed as a countermeasure against the maximum elastic elongation that occurs when the lifting platform is located on the lowest floor.
(For example, as an example thereof, Tokusho 59-157486
(See issue)

If only the measures for elastic elongation at the lowermost floor are taken, it cannot be said that this measure is any effective means when the elevating platform is on a floor other than the lowest floor.
On the other hand, since the lifting platform repeats lifting and lowering in either an empty or actual load state, it is technically difficult to constantly detect the stop position of the lifting platform in consideration of such elastic elongation and determine that position. And, even if this elastic elongation is detected by any detector, the level difference in cm unit can be rotated / corrected within an extremely fine range by using the rotating wheel equipped with the prime mover itself, the prime mover and the speed. It is technically almost impossible from the viewpoint of the characteristics of the controller, and on the other hand, it is difficult to avoid the error of the stop position on each floor of the lifting platform itself. Therefore, in combination with the elastic extension, the elevator platform and each floor are It cannot be expected that smoothness and speed-up of cargo transfer between areas will occur.

The present invention has been proposed by paying attention to the above-mentioned drawbacks, and the purpose thereof is to provide means for the stop position error of the lifting platform and the elastic extension of the suspension as well as the lowest floor. The transfer of cargo between the hoisting platform and the desired floor can be carried out on the hoisting platform side by using the position-correction detection switch that can detect the stop position error and elastic elongation on any floor. By correcting only the conveyor in the vertical direction,
An object of the present invention is to provide a freight transfer device for an elevator that can be smoothly and always performed.

[0006]

[Means for Solving the Problems] To achieve the above-mentioned object,
The cargo transfer device in the elevator according to the present invention is provided with a stop position error of the lift platform due to contact and separation with a stop position deviation detector provided on each floor of a position correction detection switch attached to a loading conveyor mounted on the elevator platform. , Detects the elastic elongation of the suspension,
By this detection, the stop position along the up-down direction of the mounting conveyor is corrected to the substantially same position as the traveling surface of the transfer conveyor provided on each floor, and the main feature is that the cargo is transferred. With the eccentric cam mounted on the drive shaft that responds / interlocks with the detection of the position correction detection switch, the stop position along the vertical direction of the mounting conveyor is corrected to be almost the same position as the upper traveling surface of the conveyor. This is the second feature.

[0007]

[Function] When the lift platform that is lifted by the suspension reaches the desired floor, the position correction detection switch attached to the loading conveyor on the lift platform side contacts the position deviation detector provided on the desired floor. When this is done, the position correction detection switch
When the interlocking drive shaft rotates, the loading conveyor is raised or lowered from the reference level via the eccentric cam attached to this driving shaft, and the loading conveyor is made to match the reference level, so that the conveyance provided on the desired floor is carried out. Mounted on the upper traveling surface of the conveyor The cargo transfer surface on the conveyor side can be corrected to almost the same position,
After the completion of the correction operation, the cargo can be quickly and smoothly transferred between the loading conveyor and the transfer conveyor.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. 1 to 5. Floor boards f ₁ , at substantially equal intervals along a vertical direction of a space s (elevator shaft) in which a hoist E is raised and lowered.
f ₂ , f ₃ , f ₄ , f ₅ , f ₆ , f ₇ are formed on both sides,
A prime mover M ₁ such as an electric motor for driving an elevating platform and a reduction gear R driven by the prime mover M ₁ are juxtaposed on a support plate 1 horizontally installed between the floors f ₈ at the upper end of the space s, and Reducer R
A suspension body 4, 4 such as a wire rope or a chain is hung on each of a pair of rotors 3, 3 assembled in the vicinity of the end of the rotary shaft 2, and one end of these suspension bodies 4, 4 is suspended. While attaching the head 5 of the lifting platform E, a weight 6 is attached to the other end, and the guide shoes g ₁ , g ₂ , g ₃ , which are mounted at appropriate positions above and below the vertical axis y-y of the lifting platform E, Each of g ₄ is slidably fitted to the projection h of the upright wall surrounding the space s and the guide rails 7 and 8 attached to each of the weights 6, so that The sensor panel 9 mounted above the guide shoe g ₂ can be moved up and down vertically, and the passage detectors p ₁ , p ₂ , p ₃ ,
A fixed position detection plate in which p ₄ , p ₅ , p ₆ , p ₇ are juxtaposed and the passage detectors p ₁ , p ₂ , p ₃ , p ₄ , p ₅ , p ₆ , p _{7 on} each floor are in contact with and separated from each other. q ₁ , q ₂ , q ₃ , q ₄ , q ₅ , q
₆ and q ₇ are installed on each floor, and the elevating platform E can confirm passage of the floor boards f ₁ , f ₂ , f ₃ , f ₄ , f ₅ , f ₆ , and f _{7 on} each floor. A connecting frame n having a flat and horizontal U-shaped cross section is integrally connected below a holding frame 11 that rotatably supports a large number of parallel rollers 10 below an elevating stand E, and a cross section fixed to the lower end of the connecting frame n. Is an inverted U-shaped suspension piece 12
An eccentric cam c fixed to a drive shaft d, which will be described later, is brought into contact with a cam receiving roller 14 which is rotatably penetrated and supported by the support shaft 13, and the eccentric cam c is rotated. Depending on the moving position, the holding frame 11 is moved up and down via the cam receiving roller 14 and the connecting frame n, and the upper surface of the roller 10 is placed on the floor board f _{1 of} each floor.
Transport conveyors K ₁ , K ₂ , K ₃ , K ₄ , K ₅ , K ₆ , K ₆ , which are installed on f ₂ , f ₃ , f ₄ , f ₅ , f ₆ , and f ₇ , respectively.
_{7 and} the upper traveling surface u of each of them is corrected to substantially the same position, and then the rollers 10 and the transport conveyors K ₁ , K ₂ , K ₃ ,
The cargo W placed on the pallet 15 is quickly and smoothly transferred to and from K ₄ , K ₅ , K ₆ , and K _7, and is referred to as a loading conveyor T including the roller 10 and the holding frame 11. A bearing b that rotatably supports the drive shaft d is supported by a channel material 16, and the channel material 16 is fixed to the upper surface of the bottom board a of the lifting platform E, while one end of the drive shaft d is attached to a joint j.
Through a rotating shaft driven by the reversible prime mover M ₂ for example electric motors through, or is directly connected to the prime mover M _2, Thus the position deviation detector i position correcting detection switch V below the motor M _{2 1} , i ₂ , i ₃ , i ₄ , i ₅ , i ₆ ,
detected by the response-interlocking separable position of the respective i _7, the reference level the mounting conveyor T in the forward or reverse L-L
It can be set to. An upper detection switch 18 and a lower detection switch 19 are attached to the top and bottom of the tip of a substantially L-shaped support piece 17 fixed to the lower end of the connecting frame n, and the position correction detection switch V is constituted by both of these, and the other is floor panel _{f 1, f 2, f 3} , f 4, f 5, f 6, located deviation in _{f 7} detectors _{i 1, i 2, i 3} , i 4, i 5, i 6,
i ₇ are provided respectively, and as shown in FIG. 4, either the (i) upper detection switch 18 or the (ii) lower detection switch 19 of the position correction detection switch V is used for the position deviation detectors i ₁ , i ₂ , I ₃ , i ₄ , i ₅ , i ₆ , i ₇ , when in contact with one of the two, in the case of (i) the loading conveyor T
Is below the reference level L-L (see the left side of FIG. 3), and in the case of (ii), the loading conveyor T is at the reference level L-L.
Since it is detected that they are respectively located above L (see the right side of FIG. 3), the detection result is normally or reversely rotated by the relay motor or other means to move the prime mover M ₂ upward, and the mounting conveyor T is moved upward. Alternatively, it can be displaced downward. A power transmitter 22 such as a belt or a chain is hung between a rotor 20 attached to a prime mover M ₃ fixed above the bottom board a of the lifting platform E and a roller 21 provided in the central portion to form a prime mover. When the rollers 21 are rotated by the activation of M ₃ , the cargo W can be transferred by suspending the power transmission element 22 that can be interlocked with the rollers 21 with the roller 10 in the outer portion. As shown in FIG. 5, loading and unloading of the loading conveyor T can be performed in either the left or right direction, but in the case of one direction on the left side or the right side, an eccentric cam is provided only on the loading / unloading side and the other side. It is also possible to adopt a mode in which the pin is tiltably and pivotally attached with a pin or the like. In the figure, 23 is an opening / closing door attached to each floor panel, 24 is an operation panel, 25 is a safety fence, 26 is a fixed stopper, 27 is a control panel, 28 is a safety shelf attached to the lifting platform E, and 29 is an upper limit final. A switch, 30 is a lower limit final switch, and 31 is a sensor panel guide plate.

[0009] In the present invention, it increases the elevating frame E (or descending), in contact with the fixed position detection plate q ₃ in example 3 floor corresponding passage detector p ₃ is the third floor of a floor board f ₃ side,
It becomes a stop command. With 3 floor close to the floor panel f ₃ elevating frame E is stopped, identified by the signal of the stop command, the position of the upper detection switch 18 or the lower detection switch 19 in the position correcting detection switch V of the elevating frame E side Based on the detection of the position above or below the reference level L-L depending on the contact state with the displacement detector i ₃ , the prime mover M is detected.
₂ is started and the eccentric cam c is rotated by the rotation of the drive shaft d by this start, whereby the cam receiving roller 14 and the connecting frame n
The holding frame 11 is lowered or raised via the
Of the pallet 15 on which the cargo W on the mounting conveyor T is placed by rotating the roller 10 by starting the prime mover M ₃ after setting the upper surface of the pallet 15 at substantially the same position as the upper traveling surface u of the transport conveyor K _3.
The third floor or transfer causes the conveyor K ₃ of the floor panel f _3, or a possible transfer of the conveyor K ₃ side the pallet 15 of the mounting conveyor T. It should be noted that the notification board due to the approach to the floor board f ₃ on the third floor of the lifting platform E is “ON”, and both the upper detection switch 18 and the lower detection switch 19 of the position correction detection switch V are in the position. It does not contact the deflection detector i _3, when under the state of so-called "off", mounted conveyor T it is confirmed which is located on the reference level L-L.

[0010]

According to the present invention, the stop position error of the lift platform is caused by the contact and separation of the position deviation detection switch provided on each floor of the position correction detection switch attached to the mounting conveyor mounted on the lift platform. By detecting the elastic extension of a suspended object such as a wire rope or a chain, it is automatically determined whether the mounted conveyor is within the reference level, and the mounted conveyor itself is then rotated. It can be moved up and down through the setting, set and held at the almost same position as the upper traveling surface of the conveyors installed on each floor, and cargo can always be smoothly transferred between the loading conveyor and the conveyors. Improve the work efficiency during cargo transfer by automatically detecting the presence / absence of cargo in the cargo, the size of the cargo, the lifting / lowering of the lifting / lowering platform, the elastic extension of the suspension during lowering and the correction of the stop position of the lifting / lowering platform. Prevention of tilting and falling While you can expect, it is possible to ensure safety, such as reduction of labor costs at the time of the work's work.

[Brief description of drawings]

FIG. 1 is a front view of a main part of a lift platform equipped with devices according to the present invention.

FIG. 2 is a view taken along the line II-II of FIG.

FIG. 3 is a view taken along the line III-III in FIG.

FIG. 4 is a view taken along the line IV-IV in FIG.

[Fig. 5] Fig. 5 is a layout view of a lifting platform and floors of each floor.

[Explanation of symbols]

E Lifting platform K _{1 to} K ₇ Conveyor Conveyor T Mounting conveyor V Detection switch for position correction W Cargo c Eccentric cam d Drive shafts i _{1 to} i ₇ Position deviation detector u Upper running surface 4 of the conveyor 4 Suspended body

Claims (2)

[Claims] 1. A stop position error of the lifting platform and an elastic extension of the suspension body due to contact and separation of a position deviation detection switch provided on each floor of a position correction detection switch attached to a loading conveyor mounted on the lifting platform. Is detected, and the stop position along the vertical direction of the mounting conveyor is corrected to the substantially same position as the traveling surface of the conveyor provided on each floor by this detection, and then the cargo is transferred. Freight transfer device for elevator. 2. An eccentric cam mounted on a drive shaft that responds / interlocks with detection of a stop position error of a lifting / lowering platform and elastic extension of a suspension body when a position correction detection switch is brought into contact with or separated from a position deviation detector. 2. The cargo transfer device for an elevator according to claim 1, wherein the stop position along the vertical direction of the mounting conveyor is corrected to be substantially the same as the upper traveling surface of the transfer conveyor.