JPH09124111A - Hanging device for elevating member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispense reduce the space for a vertical movement of a main supporting rod so as to regulate tension of both hanging wires in a narrower space at the same time. SOLUTION: When tension of both hanging wires 22A, 22B is regulated at the same time (in tension regulation for the hanging wires 22A, 22B in the first stage), an oscillating piece 61 is moved upward/downward via a vertically moving piece 100 toward a guide shaft 94 without any vertical movement of the guide shaft 94 toward a hollow standing wall 50, that is, this constitution is different from that in which an oscillation piece 61 is pivoted on a main supporting rod and a vertical position of the main supporting rod toward a hollow standing wall 50 is freely regulated, so that no space for a vertical movement of the main supporting rod is required. As a result, tension regulation for the hanging wires 22A, 22B can be carried out in a narrower space.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for suspending a lifting member.

[0002]

[Technology already developed] The present applicant has already developed a lifting device for lifting members as shown in FIGS. Hereinafter, the suspension device 55 will be described with reference to the drawings. In this description, the front means the right side in FIG. 6, the rear means the left side in the figure, the left means the front side in FIG. 6, and the right means the back side.

A horizontal support plate 51 is provided inside a hollow standing wall 50 provided on an elevator (not shown) or the like, and a main support rod 56 is provided in a vertically extending through hole 52 formed in the horizontal support plate 51. However, it is fitted so as to be able to move up and down so as not to rotate horizontally, and a retainer 57 consisting of a nut is screwed onto the male screw portion at the bottom of the main support rod 56, and the retainer 57 is attached to the horizontal support plate 51. The main support rod 56 is prevented from coming out of the through hole 52 by hitting from the inside.

At the upper end of the main support rod 56, an intermediate portion of the swinging piece 61 is provided with a pivot shaft 60 with its axis oriented in the left-right direction.
Both ends of the swinging piece 61 are vertically swingable. Explaining the concrete connection structure,
By fitting the upper portion of the main support rod 56 into an opening 62 that is formed in the middle of the length of the swing piece 61 and penetrates vertically, the swing piece 61 and the main support rod 56 are connected by a pivot 60. The swing piece 61 is attached to the main support rod 56 so as to be swingable up and down. The inner surface of the opening 62 contacts the front and rear surfaces of the upper end portion of the main support rod 56 so that the swinging piece 61 does not swing beyond the predetermined position so as to rise toward the free end side. As is apparent from this description, the front and rear inner surfaces of the opening 62 serve as stoppers 64 for preventing the swinging piece 61 from swinging beyond the predetermined position and raising the free end side.

Rotation shafts 66 having their axes centered in the left-right direction are rotatably fitted to the front and rear ends of the swinging piece 61, and a through hole 67 vertically penetrates in the middle of the lengths of the rotation shafts 66.
And an opening 68 for exposing the upper peripheral edge of the through hole 67 upward is formed in the swing piece 61, and
Recess 69 for exposing the lower peripheral edge of the through hole 67 downward
Is formed on the swing piece 61. Through the opening 68 and the through hole 67, the suspension rods 71 are fitted to both ends of the swinging piece 61 so as to be vertically movable from above without rotating horizontally with respect to the swinging piece 61. A stopper 72 is provided at a portion protruding downward from the through hole 67 so that the vertical position can be adjusted. The retainer 72 includes a spring receiver 73 and a male screw portion 71a below the suspension rod 71.
And a nut 74 that is screwed in. By tightening or loosening the nut 74, the nut 74 is moved up and down with respect to the suspension rod 71. An elastic spring 76, which is an elastic body, is interposed between the spring receiver 73 and the lower surface of the rotary shaft 66. The elastic spring 76 biases the suspension rod 71 downward with respect to the rotary shaft 66.

On the upper end of the suspension rod 71, a connecting tool 80 is swingably provided through a connecting shaft 79 having its axis centered in the left-right direction, and these connecting tools 80 are opened at the upper part of the hollow standing wall 50. It is exposed upward through 53. A pair of front and rear suspension cords 22A and 22B made of wire rope or the like are coupled to the coupling tool 80 of the suspension device 55.

Although not shown, the hanging ropes 22A and 22B are provided on the lower portion of the mast after being hung on a wheel provided on the upper end portion of the mast that guides the elevating table in a freely movable manner. It is hung on a drive wheel, then hung on another wheel provided at the upper end of the mast, and then fixed to a counterweight that can be raised and lowered.

In the above, the hanging ropes 22A, 22B
In order to evenly apply the load to the upper and lower parts, the lifting table is positioned at the lowest position, the counterweight is stopped and held at the uppermost position, and then the hanging ropes 22A and 22B are hung in the above-mentioned state. Then, as the first step,
That is, as the first step of adjusting the tension of the suspension cords 22A and 22B at the same time, the retainer 57 made of a nut is rotated to move the main support rod 56 (the swinging piece 61) to the lower side and suspend it. Either one of the ropes 22A, 22B is in a stretched state, that is, the swinging piece 61 is roughly positioned with respect to the horizontal support plate 51 in correspondence with the hanging ropes 22A, 22B set to have substantially the same length. Determine. afterwards,
The position of the retainer 72 with respect to each suspension rod 71 may be adjusted so that the left and right swing pieces 61 are horizontal or substantially horizontal. That is, if the hanging ropes 22A and 22B are not evenly loaded, the rocking piece 61 will be in a tilted state. Therefore, the rocking piece 61 may be horizontal or almost horizontal. .

In the normal hanging state, it is detected that the hanging rod 71, which is opposed to the retaining member 72 (specifically, the spring bearing 73) and includes a reflection type photoelectric switch, a limit switch, etc., moves downward. The position detector 81 is
It is attached to the rotary shaft 66 via 2 (see FIG. 8). With such a structure, the hanging ropes 22A, 2
When either of the 2B is cut, the suspension bar 71 is moved downward with respect to the swing piece 61 by the force of the elastic spring 76, but the position detector 81 is prevented from coming off accordingly.
Since 2 is no longer detected, it is possible to easily know the cutting of the hanging ropes 22A and 22B. Note that the disconnection detection signal from the position detector 81 is used to stop the lifting motor and to activate an alarm lamp / alarm buzzer (not shown).

[0010]

[Disadvantages of the technology already developed] The suspension device 55 has the following drawbacks. That is, the hanging ropes 22A, 22
When adjusting the tension of B at the same time (when adjusting the tension of the suspension cords 22A and 22B in the first stage), the swing piece 6
Since the main support rod 56 to which 1 is pivoted is moved to the lower side with respect to the elevating table 16, when the vertical movement range of the swinging piece 61 in FIG. Due to the vertical movement of the rod 56, there is a drawback in that a space having a height of "M" must be formed below the horizontal support plate 51. That is, there is a drawback that various devices cannot be installed immediately below the horizontal support plate 51.

[0011]

[Means for Solving the Disadvantages] The present invention employs the following means in order to eliminate the above disadvantages. According to the invention of claim 1, a vertical guide shaft provided on the elevating member, a vertical moving piece provided on the guide shaft so as to be adjustable in vertical position, and an intermediate portion pivotally attached to the vertical moving piece to vertically swing. Freely swinging piece, suspension bars vertically movable at both ends of the swinging piece, retainer provided at the lower end of the suspension bar so that the vertical position can be adjusted, and each suspension And a hanging rope connected to the upper end of the rod.

[0012]

The first aspect of the present invention has the following functions. When adjusting the tension of both suspension lines at the same time (when adjusting the tension state of the suspension lines in the first stage), the guide shaft is swung with respect to the guide shaft without moving up and down with respect to the lifting member. Since the upper and lower parts are moved vertically through the up-and-down moving pieces, that is, because the swinging piece is not pivotally attached to the main support rod and the main support rod is vertically adjustable with respect to the lifting member, No space is required for the vertical movement of the support rod, and the tension of both suspension lines can be adjusted simultaneously in a small space.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In this description, the front means the lower side of FIG. 1, the rear means the upper side of the figure, the left means the left side of FIG. 1, and the right means the right side of the figure.

A pair of front and rear rack devices 1 are erected on the floor so as to open the stacker crane passage 10. The rack device 1 includes a plurality of front columns 2 arranged side by side at a predetermined interval, a rear column 2 arranged behind the front columns 2 with a predetermined interval therebetween, and front and rear columns 2. And a plurality of article support members 4 provided at predetermined intervals in the height direction, and a pair of left and right article support members 4 opposed to each other without the support pillar 2 interposed therebetween.
Is configured. A space between the pair of left and right article support members 4 is a fork passage gap 5 that allows the slide fork 17 to be described later to move in the vertical direction. The entrances 6 of the article storage shelves 3 of the front and rear rack devices 1 face each other.

On the left side of the rack device 1, there is provided a loading / unloading roller conveyer 8 whose carrying direction is left and right. Rack device 1 of this loading and unloading roller conveyor 8
A known article elevator (not shown) is provided on the side.
The article elevator includes a lifting platform that can be raised and lowered by a known lifting device below the rollers of the loading and unloading roller conveyor 8,
It has a pair of support frames that are erected on the lift table and are located between the rollers of the entrance and exit roller conveyor 8. The article elevator lifts the article W by the support frame to form a fork insertion gap between the transport surface of the loading / unloading roller conveyor 8 and the lower surface of the article W, or the slide fork 1 by the support frame at the raised position.
The article W is received from the storage 7 and then lowered to drop the article W onto the loading / unloading roller conveyor 8.

A pair of upper and lower guide rails 11 are arranged in the stacker crane passage 10 so that their longitudinal directions are oriented in the left and right directions, and the stacker crane 13 is guided by these guide rails 11 so as to be movable left and right. , This stacker crane 13 has a traveling carriage 14
A lift 16 which can be moved up and down along a pair of masts 15 provided on the traveling vehicle 14 by a lift device 21 which will be described in detail below. And a slide fork 17 slidably provided. As is well known, the slide fork 17 performs an operation of projecting the article W downward and lifting the article W by the elevation of the elevator 16 and retreating to the elevator 16 to draw the article W into the elevator 16. By the operation reverse to the above, the article W can be dropped on the article storage shelf 3 or the like.

The elevating device 21 has a counterweight 24 that is vertically movable within the hollow left mast 15 and a counterweight 25 that is vertically movable within the hollow right mast 15. ing.

A pair of wheels 31 are rotatably provided on the upper part of the stacker crane 13 so as to be positioned above the left side portion of the elevating table 16 and have their axes oriented in the front-rear direction. A pair of wheels 32 are rotatably provided on the upper right side of the stacker crane 13 so as to be opposed to 31, with their axes oriented in the front-rear direction. A pair of wheels 33 are rotatably provided on the upper part of the stacker crane 13 so that their axes are oriented in the front-rear direction, and are positioned at the same height as the wheels 33.
A pair of wheels 34 are rotatably provided on the upper left side of the vehicle such that the axes thereof are oriented in the front-rear direction.

A forward and reverse rotatable motor 4 is provided on the lower right side surface of the mast 15 on the right side of the stacker crane 13.
2 (having a speed reducer and a brake device) is provided, and a drive wheel 4 having four annular grooves on a rotation shaft (not shown) of the lifting motor 42 with its axis facing forward and backward.
4 is attached.

On the left side of the lift table 16, one end of two suspension ropes 22A, 22B made of wire rope or the like is connected via a suspension device 90 described in detail below, and these suspension ropes 22A, 22B are connected. Is hung on the wheels 31 and 32, then hung on the two annular grooves on the front side of the drive wheel 44, and then on the wheels 33 and 3
It is hung on 4 and fixed to the counter weight 24 on the left side.

A pair of wheels 36 are rotatably provided on the upper part of the stacker crane 13 so as to be positioned above the right side portion of the elevating table 16 and have their axes centered in the front-rear direction. A pair of wheels 37 are rotatably provided on the upper right side of the stacker crane 13 so as to face 36, with their axes oriented in the front-rear direction. A pair of wheels 38 are rotatably provided on the top of the stacker crane 13 with their axes oriented in the front-rear direction. Wheel 3
The wheel 2 and the wheel 37, and the wheel 33 and the wheel 38 are arranged side by side in the front-rear direction so that the centers thereof overlap.

On the right side of the lifting table 16, one end of two suspension ropes 22C and 22D made of wire rope or the like is connected via a suspension device 90 described in detail below, and these suspension ropes 22C and 22D are connected to each other. After being hung on the wheels 36 and 37, they are hung on the two annular grooves on the rear side of the drive wheel 44, then hung on the wheels 38 and fixed to the counter weight 25 on the right side. In addition,
The hanging ropes 22A to 22D are hooked on the annular grooves of the drive wheel 44 and are arranged in the front-rear direction without interfering with each other.

With the above-described structure, the lifting / lowering table 16 can be lifted / lowered by operating the lifting / lowering motor 42 to rotate the drive wheel 44, while the lifting / lowering motor 42 is stopped to allow the lifting / lowering motor 42 to move. By operating a built-in brake (not shown), the lift table 16 can be stopped at a predetermined position.

The suspending device 90 has a structure as shown in FIGS. The same members as those of the suspension device 55 (shown in FIGS. 6 to 8) are designated by the same reference numerals. The hollow standing walls 50 provided on the left and right of the elevating table 16 have an opening 91 on the mast 15 side, and a horizontal support plate 51 below the upper wall 92 (upper support plate) of the hollow standing wall 50.
A through-hole 93 is formed right above the through-hole 52 formed in the through-hole 52, and a guide shaft 94 made of a screw shaft is fitted into the through-hole 52 and the through-hole 93. And is rotatably passed over the upper wall 92 (upper support plate). Two nuts 95 are screwed into the lower portion of the guide shaft 94, and the upper nuts 95 are in contact with the lower surface of the horizontal support plate 51. Further, an angular shaft portion 96 with which a spanner or the like is engaged is formed on the upper portion of the guide shaft 94, and a retaining washer 97 is attached to the upper wall 92 at a predetermined interval.

A vertical moving piece 100 is screwed onto the guide shaft 94. The vertical movement piece 100 includes a nut member 101,
The through hole 102 formed in the nut member 101 and penetrating in the left-right direction has a pivot 103 attached so that the left and right ends are exposed. The axis 103
Has a hole 104 through which the guide shaft 94 passes. Lock nut 105 for locking the nut member 101 at a predetermined position
Are screwed onto the guide shaft 94 so as to be positioned above and below the nut member 101. The middle of the length of the rocking piece 61 is pivotally attached to the left and right ends of the pivot shaft 103 so that the rocking piece 61 can be vertically rocked. Further, in the swinging piece 61, the front and rear inner surfaces of the opening 62 are inclined front and rear surface 1
It is designed to swing within a range until it comes into contact with 01a.

The position detector 81 provided on the rotary shaft 66 is a transmissive photoelectric switch, and the position detector 81 detects the detected piece 107 provided on the suspension rod 71 in a normal state. Has been done.

At both free ends of the rocking piece 61, the rocking piece 6 is provided.
In order to prevent horizontal runout of No. 1, a steady rest 109 that comes into contact with the vertical portion of the hollow standing wall 50 is provided.

In the above, the hanging ropes 22A to 22D
To ensure that the load is evenly applied to the
Counterweight 2 with the bottom position
After stopping and holding Nos. 4 and 25 at the uppermost position, the suspension cords 22A to 22D are bridged to the above state, and then, as a first step, that is, the tension of the suspension cords 22A to 22D is adjusted at the same time. As a first step, after loosening the lock nut 105 on the lower side, the swinging piece 61 is moved to the lower side by rotating the guide shaft 94 formed of a screw shaft, and any one of the hanging ropes 22A to 22D. In a state in which one rope is stretched, that is, in correspondence with the hanging ropes 22A to 22D set to have substantially the same length, the position of the swing piece 61 with respect to the horizontal support plate 51 is determined. After that, the nut member 101 is locked by the lock nut 105, and then the position of the retainer 72 with respect to each suspension rod 71 is adjusted so that the left and right swing pieces 61 are horizontal or substantially horizontal. That is, the hanging ropes 22A to 22
If the load is not evenly applied to D, the oscillating piece 61 will be in a tilted state. Therefore, the oscillating piece 61 may be horizontal or substantially horizontal.

[0029]

[Modifications and the like] Modifications and the like will be described below. (1) Counterweight 24 and hanging rope 22A, 2
2B or counterweight 25 and hanging rope 22C,
22D may be connected via the suspending device 90. That is, in this specification, the "elevating member" referred to in the claims may be any member that moves up and down. (2) The elevating member may be suspended by one suspension device 90, that is, only by two suspension ropes. (3) The position detector 81 for detecting the lower part of the swing piece 61 is provided in the retaining member 72, and when the hanging ropes 22A to 22D are cut, the retaining member 72 moves downward and the position detector 81 moves. It may also be possible to detect that the hanging ropes 22A to 22D are cut off by not detecting the lower portion of the swing piece 61. (4) The guide shaft 94 does not have to be a screw shaft. In that case,
As means for fixing the vertical moving piece 100, for example, a means such as attaching a pin across the communicating hole provided in the vertical moving piece 100 and the guide shaft 94 is adopted. (5) Nut member 101 and pivot 103 of the vertically movable piece 100
And may be integral. (6) It goes without saying that the present invention has the following effects. That is, while observing the swinging position state of the swinging piece, the position of the retaining member with respect to each hanging bar is adjusted so that the swinging piece is horizontal or substantially horizontal, so that the lifting member is moved to
The load of the lifting member is 2 when it is hung by the hanging rope of the book.
The length of the hanging rope can be easily adjusted so that the hanging rope of the book is evenly hung.

[0030]

According to the present invention, the following effects can be obtained by the above-described configuration. According to the invention of claim 1, when the tension of both suspension ropes is adjusted at the same time (when adjusting the tension state of the suspension ropes in the first stage), the guide shaft is moved up and down with respect to the lifting member. Instead, the swing piece is moved up and down with respect to the guide shaft through the vertical movement piece, that is, the swing piece is pivotally attached to the main support rod and the main support rod is vertically moved with respect to the lifting member. Since it is not adjustable, it does not require a space for moving the main support rod up and down, and the tension of both suspension lines can be adjusted at the same time in a narrow space. According to the second aspect of the invention, since the vertical position of the rocking piece (vertical moving piece) can be adjusted by rotating the guide shaft formed of the screw shaft, the position of the rocking piece can be easily adjusted. According to the invention of claim 3, since the guide shaft is passed over the pair of upper and lower support plates which are provided on the elevating member at a predetermined interval, the bending force is applied to the guide shaft as compared with the structure supporting only the lower end. Deformation / damage is unlikely to occur even when is applied.

[Brief description of the drawings]

FIG. 1 is a simplified plan view with an intermediate omitted, showing an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view taken along the line II-II of FIG.

FIG. 3 is an enlarged sectional view taken along line III-III of FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

5 is a sectional view taken along line VV of FIG.

FIG. 6 is a vertical cross-sectional view of a main part of a suspension device already developed.

FIG. 7 is a sectional view taken along line VII-VII of FIG. 6;

FIG. 8 is a sectional view taken along line VIII-VIII of FIG. 6;

[Explanation of symbols]

 16 Lifting platform 22A Suspended rope 22B Suspended rope 22C Suspended rope 22D Suspended rope 61 Oscillating piece 71 Suspended rod 72 Detachment 73 Spring bearing 74 Nut 90 Suspension device 94 Guide shaft 100 Vertical movement piece 101 Nut member

Claims (3)

[Claims] 1. A vertical guide shaft provided on an elevating member, a vertical moving piece provided on the guide shaft so that the vertical position can be adjusted, and an intermediate portion is pivotally attached to the vertical moving piece so as to be vertically swingable. The oscillating piece, a suspension rod vertically movable at both ends of the oscillating piece, a retainer provided at the lower end of the suspension rod so that the vertical position can be adjusted, and A suspending device for an elevating member having a suspending rope connected to an upper end portion. 2. The lifting device according to claim 1, wherein the guide shaft is a screw shaft, and the vertical moving piece is screwed onto the guide shaft. 3. The hoisting device suspension device according to claim 1, wherein the upper and lower end portions of the guide shaft are passed over a pair of upper and lower support plates provided on the hoisting member at predetermined intervals.