JP2002145599A - Drum porter with suspension scale - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply control the rotation of a rotating needle. SOLUTION: A rotating needle control means is provided with a rod holder 25 provided on the front frame 3b of a lift frame 3, a rod 24 loosely coupled with the rod holder 25, a stopper 33 journalled to the front frame 3b at its base end section and having a free hook hole 23 loosely coupled with the rod 24, and a rod stop 26 provided on the rear frame 3a of the lift frame 3 and arranged below the rod holder 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum porter with a hanging scale used for transporting a drum can.

[0002]

2. Description of the Related Art A conventional drum porter with a hanging scale is provided with a guide frame erected on a carriage, a parallelogram link elevating frame which moves up and down along the guide frame by an elevating drive device, and is provided on the elevating frame. And a suspension weigher having a rotating needle supported by an upper portion of the lifting frame and rotated by the load of the clamp device. This hanging balance includes a rotating needle fixed to a gear, a rack that meshes with the gear, and a spring that biases the rack upward, and the rack is provided on a front frame of a parallelogram link elevating frame. Are linked.

When the drum can is gripped by the clamp device and the pump pedal of the lifting drive device is depressed, the lifting frame rises along the guide frame and the clamp device rises, so that the drum can is lifted away from the floor surface. At this time, the rack of the hanging scale slides downward due to the load of the drum, so that the gear rotates and the rotating needle rotates to indicate a scale corresponding to the weight of the drum.

[0004]

In the conventional example, when the lifting frame is raised by pressing the pump pedal to raise the drum, the drum moves up and down each time the pedal is depressed, and the rack is moved when the drum is lowered. Slide it down sharply. Therefore, the rotating needle may rotate beyond the allowable range, that is, beyond the maximum scale, and the hanging scale may break down.

When the drum porter is moved while the drum can is suspended, the drum moves up and down due to vibration. Then, the rotating needle may be in the same state as described above.

Therefore, in order to solve this problem, a rotating needle control means is used. The rotary needle control means is provided on a front frame of the elevating frame, and has a stopper having a screw hole,
A threaded rod screwed into the screw hole; and a rod stopper provided on a rear frame of the elevating frame and disposed below the stopper. In this rotary needle control means, the distance between the lower end and the rod stopper is adjusted by rotating the rod, and when the front frame is lowered by a certain amount, the rear end of the rod comes into contact with the rod stopper, and the front frame is further moved. I try not to descend.

However, in this rotary needle control means, every time the position of the rod is adjusted, the operator must manually rotate the rod, which is extremely troublesome and time-consuming. Therefore, there is a practical problem since the operator tends to avoid using the rotary needle control means.

In view of the above circumstances, it is an object of the present invention to make it possible to easily control the rotation of a rotating hand.

[0009]

SUMMARY OF THE INVENTION The present invention provides a guide frame erected on a bogie, a parallelogram link elevating frame that moves up and down along the guide frame by an elevating drive device, and provided on the elevating frame. A drum porter comprising: a loading / unloading device, a lifting balance supported by an upper portion of the lifting / lowering frame, and having a rotating needle rotated by a load of the loading / unloading device; and a rotating needle control means provided on the lifting / lowering frame. The rotating needle control means includes a rod holder provided on a front frame of the lifting frame, a rod loosely fitted to the rod holder, and a base end pivotally supported by the front frame. A stopper having a freely hooked hole for loosely fitting, and a rod stopper provided on a rear frame of the elevating frame and disposed below the rod holder are provided.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The inventor of the present invention has
As a result of repeated research and experiments, considering the use of a free hook,
A rod holder provided on a front frame of the elevating frame, a rod loosely fitted to the rod holder, and a base end portion pivotally supported by the front frame, the rotary needle control means being loosely fitted to the rod. It has been found that a stopper having a universal hook hole and a rod stopper provided on the rear frame of the elevating frame and disposed below the rod holder may be used. With this rotary needle control means, the operator holds the free end of the stopper and moves it up and down, so that it becomes free or locked,
It becomes possible to engage and disengage the rod and the universal hook with one-touch operation.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. A trolley 1 of the drum porter 7 with a hanging scale is provided with a U-shaped frame 11, and front wheels 12 at both ends thereof.
Is provided. A board 13 is fixed to two places on the left and right sides of the frame 11, and a rear wheel 14 is mounted below the board 13.

A hollow guide frame 15 is erected at the center of the frame 11, and the elevating frame 3 is arranged outside the hollow guide frame 15 via a guide roller 17 so as to be able to move up and down. The lifting frame 3 includes a rear frame 3a that moves up and down along a guide frame 15, and a front frame 3b rotatably connected to the rear frame 3a via upper and lower connection arms 4a and 4a. It is a quadrilateral link lifting frame, the front frame 3b and the rear frame 3a are parallel,
The upper connecting arm 4a and the lower connecting arm 4b also always maintain a parallel state.

As the lifting drive 2, a hydraulic cylinder 2a
The piston rod 2b is connected to the rear frame 3a of the lifting frame 3. The board 13 has a pump pedal 2c for operating a hydraulic pump and a descending valve 2d for releasing hydraulic pressure.
And are provided. For safe operation of the trolley 1,
At the center of the U-shaped frame 11, a U-shaped curved frame 50 that curves backward is provided.

The clamp device 5 as a cargo handling device includes a clamp column 30 protruding from the upper end of the front frame 3b of the lifting frame 3.
In addition, an L-shaped lower jaw member 31 having a lower jaw is axially attached via parallel links 32 and 33, and a tip of the parallel link 33 is bent downward to provide an upper jaw member 34. The clamp device 5 can perform an operation of gripping and raising the drum can 4 only by an operation of raising the lifting frame 3. A release lever 35 is attached to the parallel link 33.

When the clamping device 5 grips the drum, the receiving plate 19 abuts on the body wall to restrict the movement of the drum.

At the upper end of the guide frame 15, a hanging scale 9 is suspended via a horizontal arm 8. Although not shown, the hanging balance 9 includes a gear to which the rotating needle is fixed, a rack that meshes with the gear, a guide roller for guiding the rack, a spring for urging the rack upward, And a receiving part connected to the rack. This receiving part is connected to the front frame 3b of the parallelogram link elevating frame 3.

A lever post 21 is provided on the front frame 3b. A base end of a stopper 22 is pivotally mounted on the upper end of the lever post 21. The stopper 22 is provided with a universal hook hole 23 into which a rod 23 is loosely fitted.
The diameter d of the universal hook hole 23 is formed larger than the diameter D of the rod 24.

The size of the diameter D is appropriately selected within a range in which a universal hook can be formed. For example, the distance w between the upper locking portion 23a and the lower locking portion 23b that abuts on the rod 24 when locked is determined. , A value equal to or less than １ ／ of the rod diameter d, ie, w / d ≦ １ ／, is preferred.

The rod 24 is slidably supported by a rod holder 25 fixed to the front frame 3b.
The length is appropriately selected as needed. Below the rod holder 25, there is provided a rod stopper 26 for restricting the lowering of the rod 24.
Are fixed to the rear frame 3a. This rod holder 25
A spring 27 is stretched between the stopper 22 and
The stopper 22 is pressed in the locking direction. The spring 27 is not always necessary and may be omitted.

Next, the operation of this embodiment will be described.
When the operator operates the lifting / lowering driving device 2 to slide the lifting / lowering frame 3 and adjust the clamp device 5 to the position of the upper edge of the drum 40, the drum porter 7 is pressed to press the clamp device 5 against the drum 40. The upper edge is strongly sandwiched between the upper jaw member 34 and the lower jaw member 31.

The operator pushes down the stopper 22 with the right hand against the force of the spring 27, and in the free state 2A, that is, with the stopper 22 horizontal and the rod 24 and the universal hook hole 2
3 is not engaged. And the rod 24
The upper end of the rod 24 with the left hand and raise it.
After the distance 4a is set to the allowable sliding distance from the rod stopper 26, that is, the sliding distance of the front frame 3b such that the rotary needle does not rotate beyond the maximum scale, the hand is released from the stopper 22. Then, the stopper 22 is inclined, and the upper locking portion 2 of the universal hook hole 23 is formed.
3a and the lower locking portion 23b are locked to the rod 24, and the stopper 22 is locked. At this time, the lower end 24a of the rod 24 is separated from the rod stopper 26 by the allowable sliding distance.

Depress the pump pedal 2c to depress the hydraulic cylinder 2a.
When the is driven, the lifting frame 3 rises each time the driver steps on the drum, and the drum 40 is separated from the floor F and suspended as shown in FIG.

When the drum 40 rises by one pumping, the drum 40 reaches the peak point of the rise.
When the front frame 3b moves down by the permissible sliding distance as the drum 40 moves downward, the lower end 24 of the rod 24 as shown in FIG.
a comes into contact with the rod stopper 26. Therefore, the front frame 3b
In this case, only the allowable sliding distance is lowered, so that the rotating needle does not rotate beyond the maximum scale.

In this state, when the free end of the stopper 22 is pushed downward to release the engagement with the rod 24 and become free, the entire load of the drum can 40 is applied to the hanging scale 9, so that The needle indicates the weight of the drum.

The drum porter is transported to a predetermined position while the drum can 40 is suspended. At this time, since the stopper 22 is in the locked state, even if the drum 40 moves up and down due to vibration, the rotary needle rotates beyond the maximum scale. There is no. Next, the lowering valve 2d is opened to lower the lifting frame 3 to lower the drum 4
0 is attached to the floor F. Then, the clamp device 5 is separated from the drum 40 by operating the release lever 35.

The embodiment of the present invention is not limited to the above. For example, instead of a drum clamping device for gripping the upper edge of a drum can as a cargo handling device, a type in which the peripheral wall of the drum can is clamped by a pair of horizontal arms is used. Clamping device,
Alternatively, a clamp device of a type that locks a hanging hook in a handle hole provided in a peripheral wall of a drum can may be used.

[0027]

According to the present invention, the rotary needle control means includes a rod holder provided on the front frame of the elevating frame, a rod loosely fitted to the rod holder, and a base end portion attached to the front frame. Support,
A stopper having a universal hook hole for loosely fitting with the rod and a rod stopper provided on the rear frame of the elevating frame and disposed below the rod holder, so that the free end of the stopper is It is possible to switch between the locked state and the free state only by grasping and moving up and down. Therefore, since the rod can be easily adjusted within the allowable sliding distance or set in a free state, the burden on the operator can be reduced unlike the conventional example.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a plan view showing an embodiment of the present invention.

FIG. 3 is a diagram showing a part of a front view showing a state where a drum can is suspended.

FIG. 4 is an enlarged sectional view of a main part showing a locked state of a stopper.

[Explanation of symbols]

 Reference Signs List 1 cart 2 lifting drive device 3 parallelogram link lifting device 5 clamp device 7 drum porter 9 hanging scale 22 stopper 23 universal hook hole 24 rod 26 rod stopper 40 drum can

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G01G 19/14 G01G 19/14 D 23/06 23/06 C

Claims (4)

[Claims] A guide frame erected on a carriage, a parallelogram link elevating frame vertically moved along the guide frame by an elevating drive device, a loading / unloading device provided on the elevating frame, A drum porter comprising: a suspension weigher having a rotating needle supported by an upper portion of a frame and rotating by a load of the cargo handling device; and a rotating needle control unit provided on the lifting frame; A rod holder provided on a front frame of the elevating frame, a rod loosely fitted to the rod holder,
A stopper having a free hook hole for pivotally supporting a base end portion of the front frame and loosely fitting with the rod; and a stopper provided on a rear frame of the lifting frame.
And a rod stopper disposed below the rod holder. 2. The drum porter with a hanging scale according to claim 1, wherein the cargo handling device is a drum clamp device. 3. The drum porter with a hanging scale according to claim 1, wherein a spring for urging in a locking direction is stretched between the rod holder and the stopper. 4. The hanging balance according to claim 1, wherein the distance between the upper locking portion and the lower locking portion of the universal hook is smaller than or equal to 1/4 of the diameter of the rod. With drum porter.