JPH07101503A - Truck with clean device - Google Patents

Abstract

PURPOSE:To provide a weighty matter transport truck with a clean device which prevents dust from being attached to matters to be transported and at the same time mitigates impact at the time of transfer. CONSTITUTION:A truck main body having plural wheels 6 at its lower portion is formed by a box body 5 whose inside is made to be a housing chamber 4, and a clean air supply device 16 that blows down clean air 15 is provided on the box body 5, and at the housing chamber 4, a fork device 32 that conducts the delivery of matters to be transported 13 between the support portions 14 of the housing chamber 4 and a cargo receiving stand 31 on a floor S side, is provided. As a result, the work of loading the matters to be transported 13 onto the support portions 14 and unloading it from the support portions 14 is automated, so the contamination of the matters to be transported 13 by a worker can be prevented, and also the loading/unloading time impact of the matters to be transported 13 that are weighty matters can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trolley with a cleaning device, which is used for transporting a container for storing articles such as liquid crystal glass which are not susceptible to dust.

[0002]

2. Description of the Related Art Conventionally, a hand-push type equipped with a clean air supply device has been provided as a dolly of this type. That is, as shown in FIG. 6, a trolley body having a plurality of wheels 50 in the lower part is formed by a box body 51, and the inside is vertically divided by a partition body 52. With respect to this partition body 52, the upper part and the front part are the support parts 53 for the transported object 59.
Is formed into a storage chamber 54 having a
55 is provided. Further, with respect to the partition body 52, a lower part and a front part are formed in the exhaust chamber 56, and a fan 57 is formed in the rear part.
Is provided. Further facing the storage room 54, the box body
An opening 51a is formed on the front surface of the 51 for loading and unloading the transported object 59, and an opening / closing door 58 is provided in the opening 51a for maintaining cleanliness during traveling and passing of an operator, The front portion of the partition body 52 is formed as a porous portion 52a. Further, a vibration-proof pad 60 is interposed between the wheel 50 and the box body 51.

According to this conventional type, the transported object 59 can be stored and stored by placing the transported object 59 on the support portion 53 and closing the opening / closing door 58, and the box body can be stored in the stowed state.
The object 59 can be transported by pushing 51 by hand. When carrying, the vibration generated on the wheels 50 due to the unevenness of the floor S is prevented from being transmitted to the box body 51 by the vibration isolation pad 60. During such storage and transportation, the external air taken in by the fan 57 is filtered.
It becomes clean air 61 through 55, and this clean air 61
Is fed horizontally to the transported object 59 from the rear to the front, collides with the opening / closing door 58, turns downward, enters the exhaust chamber 56 from the porous portion 52a, and then moves forward. Exhausted.

[0004]

According to the above-described conventional structure, since the worker performs the loading work and the unloading work of the transported object 59 on the support portion 53, the transported object is transported by the worker.
59 was sometimes contaminated (dust was attached). In addition, when the transported object 59 is a plurality of liquid crystal glasses and heavy objects (for example, 20 to 30 kg) such as containers (cassettes) thereof, the impact during loading and unloading may be a problem.

The present invention solves the above problems,
An object of the present invention is to provide a truck with a clean device for carrying heavy objects, which prevents dust from adhering to the carried object and mitigates impact during transfer.

[0006]

In order to achieve the above object, a trolley with a cleaning device according to a first aspect of the present invention comprises a trolley main body having a plurality of wheels at its lower part, and a box body having an inside as a storage chamber for a transported object. A trolley with a clean device, in which the trolley body is provided with a clean air supply device, wherein the storage chamber is provided with a retracting device for transferring the transported object to and from a floor-side load receiving means. It is characterized by that.

The trolley with a cleaning device of the second invention is
The retracting device of the first invention is characterized in that the retracting portion is of a multistage type. Furthermore, a truck with a clean device according to a third aspect of the invention is characterized in that the actuator portion of the advance / retreat device of the first aspect and the second aspect of the invention is covered.

Further, the trolley with the cleaning device of the fourth invention is
A stop positioning means is added to the bogie body of the first invention.

[0009]

According to the construction of the first aspect of the invention, the article to be conveyed is automatically transferred to and from the floor side load receiving means by the retracting device. Therefore, the contamination of the transported object by the worker is prevented, and the impact at the time of loading and unloading is prevented.

Further, according to the structure of the second aspect of the invention, the multi-stage type retracting device transfers the object to be conveyed with the floor-side load receiving means by multi-stage strokes. With multiple strokes, one stroke can be short,
Therefore, the lateral dimension of the retractable device can be shortened, and as a result, the width of the carriage main body can be reduced.

Further, according to the structure of the third aspect of the present invention, since the actuator portion of the retractable device is covered, the generation of dust from the retractable device is prevented. Therefore, dust is prevented from adhering to the transported object.

Further, according to the structure of the fourth aspect of the invention, the stop positioning means keeps the front-rear and left-right intervals between the floor-side load receiving means and the carriage constant. Therefore, the transferred object is accurately delivered.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a perspective view of a truck with a cleaning device according to an embodiment of the present invention, FIG. 2 is a view taken along the line AA of FIG. 1, and FIG. 3 is a view taken along the line BB of FIG.

The trolley body comprises a box-shaped frame 1 and the frame 1.
Is formed into a box body 5 having a storage chamber 4 inside by a plurality of side plates 2 attached so as to close the four side surfaces thereof, a bottom plate 3 and the like. At that time, the side plate 2 is made of an antistatic acrylic plate. It A plurality of wheels 6 are provided below the box body 5 via a vibration-proof pad 27. Further, a stop positioning device 7 is provided below one side surface of the box body 5. A rod-shaped handle 8 is provided on each of the rear surface and both side surfaces of the frame body 1.

A storage chamber 4 inside the box body 5.
Are divided into upper and lower parts by a partition body 9, and an upper part of the partition body 9 is formed in a clean chamber 10 and a lower part thereof is formed in an exhaust chamber 11. An opening / closing door 12 is formed on the front surface of the box body 5 facing the clean room 10. Here, the opening / closing door 12 has a double door structure, for example. The partition body 9 is provided with air permeability in the vertical direction, for example, by being porous.
A support portion 14 for the transported object 13 is provided on the partition body 9. The transported object 13 is, for example, a container (heavy weight; for example, 20 to 30 kg) capable of accommodating a large number of liquid crystal glasses, and the support portion 14 is formed by providing a container cradle 26 of the container on a vibration-proof rubber 25. The transferred object 13 is placed so that the open / close door 12 side is
Is configured to be supported at an angle. Further, a photoelectric detector 29 for detecting the transported object 13 is provided at the center of the support portion 14.

Also, clean air is placed on the box body 5.
A clean air supply device 16 for blowing downward 15 is provided, and the clean air supply device 16 is provided in a box-shaped main body 17 whose open lower surface faces the cleaning chamber 10 and a lower part of the main body 17. It is composed of a filter 18 and a plurality of fans 19 penetrating the top plate of the main body 17.

In the exhaust chamber 11, a battery 20 is provided on one side in the front-rear direction and a charger 21 is provided on the other side. An exhaust filter (an example of an air exhaust unit; not shown) is provided in a portion of the bottom plate 3 between the battery 20 and the charger 21 so that the exhaust gas can be exhausted from the exhaust chamber 11 toward the floor. There is.

In FIG. 1, reference numeral 22 is an operation panel provided on one side surface of the box body 5. In addition, in the clean room 4,
A multi-stage fork device 32 is provided as an exiting / retracting device for transferring the transported object 13 between the supporting portion 14 and the cargo receiving table 31 which is the cargo receiving means on the floor S side shown in FIG. .

In this fork device 32, as shown in FIG. 4, the first slider 34 in the second stage is provided on the support 33 corresponding to the first stage, and the second slider 35 in the third stage is provided on the first slider 34. The first slider 34 is provided on the side of the support 33.
Is provided with a first actuator 36 for driving back and forth, and a second actuator 37 for driving the second slider 35 forward and backward is provided on a side portion of the first slider 34. Each of the first and second actuators 36, 37 has a DC servo motor 38.
A and 38B are provided to drive the first and second sliders 34 and 35, respectively, in combination with a ball screw (not shown). In addition, the first and second sliders 34 and 35 are the LM guide 39.
It is slid through A and 39B. The first and second actuators 36 and 37 are sealed by covers 40A and 40B, respectively. Further, the support 33 is provided with a limit switch (not shown) for detecting the extension and retreat of the first slider 34, and the first slider 34 is provided with an extension and retreat of the second slider 35. A limit switch (not shown) for detecting is provided.

A lifter device 44 is provided as means for moving the fork device 32 up and down. This lifter device 44
Is connected to the support arm 45 that supports the support 33 of the fork device 32 from below and is driven up and down in the cleaning chamber 4, and the lifting motor 46 and the lifting motor 46 that are disposed in the exhaust chamber 11, The driving mechanism 47 drives the arm 45 in the vertical direction.

The stop positioning device 7 is a box body 5.
A pair of struts 23A is vertically installed at the bottom of one side of
A pair of link bodies 23B having a fulcrum at A is provided with a locking rod 23 at the tip thereof, and pedal bodies 23C are horizontally fixed at the other ends. The locking rod 23 is vertically moved and locked by the operation of the pedal body 23C. A pair of locking rails 24A and 24B are laid along the front end of the cargo receiving stand 31 at intervals of the wheels 6, and one locking rail 24A is provided with a locking hole D into which the locking rod 23 is inserted from above. Cage, locking rail for wheel 6
By putting in between 24A and 24B and inserting the locking rod 23 into the locking hole D, the front-rear and left-right intervals between the box body 5 and the load receiving base 31 are fixed.

FIG. 5 shows a block diagram of a control system of a truck with a cleaning device according to this embodiment. The control system of the truck with the cleaning device is provided in the exhaust chamber 11 and includes a control device 41 including a microcomputer, an operation panel 22, and a fork device.
Limit switches 48A and 48B for detecting the extension and retreat of the first slider 34 of 32, limit switches 49A and 49B for detecting the extension and retreat of the second slider 35, and the upper limit of the support arm 45 of the lifter device 44. Limit switch 50A, 50 for detecting the lower limit
B, the sensor system 42 including the photoelectric detector 29, and the fan 1
9, two DC servo motors 38A, 38 of fork device 32
B, a drive system 43 including a lift motor 46 of the lifter device 44, and the control device 41 controls the start and stop of the fan from the operation panel 22, the operation signal for unloading the transported object 13, and the operation signal for loading. The detection signal of the sensor system 42 is input and stored, and the drive system 43 is controlled according to the operation signal and the detection signal to control the operation of the truck with the cleaning device.

The load receiving base 31 for loading and unloading the transported object 13 is provided with a pair of support members 31A having a space into which the first and second sliders 34, 35 can be inserted. . The operation of the above configuration will be described. Box body 5 now
It is assumed that the transported object 13 is stored inside and the clean air supply device 16 is driven. (1) The clean air supply device 16 is operated by the power source from the battery 20 while the storage device is in the box body 5. That is, the external air taken into the main body 17 by the operation of the fan 19 passes through the filter 18 to become the clean air 15, and the clean air 15 is blown downward into the clean room 10. In this way, the clean air 15 flowing as a vertical laminar flow over the entire area of the clean room 10 is the upper surface 13a of the transferred object 13.
Since the upper surface 13a collides with the upper surface 13a, the upper surface 13a can be sufficiently cleaned even if the upper surface 13a is inclined.

The clean air 15 flowing downward in the clean room 10 passes through the porous partition 9 and flows downward into the exhaust chamber 11, and is exhausted toward the floor S through the exhaust filter. In this way, clean air 15 is applied to floor S
By exhausting air toward, the discomfort that the exhaust air is blown directly to the lower body of the operator is eliminated, and the dirty air is not blown directly to other devices or articles. (2) When unloading the transported object 13, first, the worker holds the handle 8
By manually pushing the box body 5 via the
Carry the transported object 13 to the 31 position.

At the time of such transportation, since the transported object 13 is inclined at a predetermined angle as described above, the anti-vibration pad 27 is further interposed between the wheel 6 and the box body 5 to provide anti-vibration. Since the receiving table 26 is supported by the rubber 25, the floor S
The vibrations generated on the wheels 6 due to the unevenness of are absorbed by the vibration-proof pads 27 and the vibration-proof rubbers 25, and the liquid crystal glasses contained in the transported object 13 do not move and collide (contact) with each other. It is possible to prevent rubbing and prevent damage or failure of the transported object 13 due to vibration. (3) When the target cargo cradle 31 position is reached, the wheel 6 is put in between the locking rails 24A and 24B, and the locking rod into the locking hole D.
By inserting 23, the front-rear and left-right intervals between the box body 5 and the load receiving base 31 are fixed, and the operation panel 22 is operated to input the stop signal of the fan 19 to the control device 41. The control device 41 stops the fan 19 in response to this input signal.

Next, the worker opens the opening / closing door 12 and operates the operation panel 22 to input an unloading signal to the control device 41.
In response to this input signal, the control device 41 drives the elevating motor 46 until the upper limit switch 50A of the support arm 45 operates and raises the support arm 45 of the lifter device 44 to the upper limit position to move the transported object 13 to the first position. 2 Place it on the slider 35, then DC until the limit switch 48A of the first slider 34 operates.
Drive the servo motor 38A to extend the first slider 34,
Subsequently, the DC servomotor 38B is driven to extend the second slider 35 until the limit switch 49A of the second slider 35 operates. Next, the lift motor 46 is driven until the lower limit switch 50B of the support arm 45 operates, and the lifter device is driven.
The support arm 45 of 44 is lowered to the lower limit position. Therefore, the transported object 13 is transferred (unloaded) onto the support 31A of the load receiving table 31.

Next, the control device 41 drives the DC servomotor 38B to shrink the second slider 35 until the withdrawal limit switch 49B of the second slider 35 operates, and then withdraws the withdrawal limit of the first slider 34. D until switch 48B operates
The C servo motor 38B is driven to shrink the first slider 34.

In this way, the worker finishes unloading without touching the transported object 13. Then, the worker closes the opening / closing door 12 and pulls out the locking rod 23 from the locking hole D to release the locking rod 23 from the locking position, and manually pushes the box body 5 via the handle 8 to receive the cargo cradle 31. Move from position. (4) When loading the transported object 13, the worker first pushes the box body 5 through the handle 8 to push the target cradle 31.
Move to position. (5) When reaching the position of the loading platform 31, the locking rail of the wheel 6
By inserting between 24A and 24B and inserting the locking rod 23 into the locking hole D, the front, rear, left and right space between the box body 5 and the load receiving base 31 is fixed, and the opening / closing door 12 is opened to operate. The panel 22 is operated to input a loading signal to the control device 41.

In response to this input signal, the control device 41 causes the first
The DC servomotor 38A is driven to extend the first slider 34 until the limit switch 48A of the slider 34 operates, and then the limit switch 49A of the second slider 35 is extended.
Drive the DC servo motor 38B until the second slider 35 is extended. Next, the elevating motor 46 is driven until the upper limit switch 50A of the support arm 45 operates to raise the support arm 45 of the lifter device 44 to the upper limit position. Therefore, the transported object 13 is transferred onto the second slider 35. Next, the DC servomotor 38B is driven until the withdrawal limit switch 49B of the second slider 35 operates, and the second slider 35 is contracted. DC servo motor 38B until passage is detected
Is driven to shrink the first slider 34. Next, the lifting motor
46 is driven until the lower limit switch 50B of the support arm 45 is operated to lower the support arm 45 of the lifter device 44 to the lower limit position. Therefore, the transported object 13 is tilted at a predetermined angle and transferred (loaded) onto the support portion 14. In this way, the worker finishes loading without contacting the transported object 13. (6) Next, the worker closes the opening / closing door 12 and pulls out the locking rod 23 from the locking hole D to release it from the locking position,
Operate the operation panel 22 to control the start signal of the fan 19
Enter in 22. In response to this input signal, the control device 41 activates the fan 19, the clean air supply device 16 is driven, and the transported object 13 is sufficiently cleaned by the clean air 15 as described above. Then, the worker pushes the box body 5 through the handle 8 to move it to the storage position.

As described above, the loading operation of the objects to be transferred 13 onto the supporting part 14 and the unloading operation from the supporting parts 14 are automated, so that the objects to be transferred 13 can be prevented from being contaminated by workers, and It is possible to prevent an impact when loading and unloading the transported object 13 that is a heavy object.

Further, since the first and second actuator portions 36 and 37 of the fork device 32 are covered, it is possible to prevent them from becoming dust generating portions, and dust adheres to the object to be conveyed 13 to prevent defects. You can solve the problem that occurs. Further, since the fork device 32 is of a multi-stage type, the length dimension L of the support 33 can be shortened even when the transported object 13 is large, and as a result, the width of the box body 5 itself which is the carriage main body can be reduced.

The box body 5 is stopped and positioned by a positioning device 7
By fixing at a predetermined locking position by means of the locking rails 24A and 24B, the front, rear, left, and right intervals between the box body 5 and the load receiving base 31 can be made constant at all times, and the transferred object 13 can be transferred to and from the load receiving base 31. Can be done accurately.

In this embodiment, the clean air supply device 16 is installed on the box body 5, but it is arranged on the side surface of the clean room 10 and the clean air 15 is supplied to the conveyed object 13 from the side surface. You can also do so. According to this arrangement,
The height of the entire dolly can be lowered.

Further, in the above embodiment, the push-pull type trolley is shown, but it may be a drive traveling type trolley. Further, although the support portion 14 supports the transported object 13 while inclining it at a predetermined angle, it may be supported horizontally depending on the content of the transported object 13. Further, although the support portion 14 is provided, it is possible to place the transported object 13 on the second slider 35. In addition, the support portion 14 has a vibration-proof rubber 25 as a vibration-proof means.
However, it is also possible to use a spring or the like that absorbs vibration.

[0035]

According to the first aspect of the present invention, since the transferred object is automatically transferred to and from the load receiving means by the retracting device, it is possible to prevent the worker from contaminating the transferred object. It is possible to prevent shock when loading and unloading.

According to the second aspect of the invention, since the retracting device has multiple strokes, the stroke of one stage can be short, and therefore the lateral dimension of the retracting device can be shortened.
As a result, the width of the truck body can be reduced.

Further, according to the third aspect of the invention, since the actuator portion of the retracting device is covered, the generation of dust from the retracting device can be prevented, and the adhesion of dust to the transported object can be prevented.

According to the fourth aspect of the present invention, the stop positioning means keeps the front-rear and left-right intervals between the floor-side load receiving means and the trolley constant, so that the transferred object can be delivered accurately.

[Brief description of drawings]

FIG. 1 is a perspective view of a truck with a cleaning device according to an embodiment of the present invention.

FIG. 2 is a view as seen from the direction of arrow AA in FIG.

FIG. 3 is a BB arrow view of FIG. 1 of the cart with the cleaning device.

FIG. 4 is a schematic perspective view of a fork device of the truck with the clean device.

FIG. 5 is a block diagram of a control system of the truck with the cleaning device.

FIG. 6 is a schematic vertical sectional side view of a conventional bogie with a cleaning device.

[Explanation of symbols]

 4 Storage room 5 Box body (car body) 6 Wheels 7 Stop positioning device 10 Clean room 11 Exhaust chamber 12 Open / close door 13 Transported object 14 Support part 15 Clean air 16 Clean air supply device 19 Fan 22 Operation panel 23 Lock rod 24A , 24B Locking rail 31 Loading platform (load receiving means) 32 Fork device 33 Support 34 First slider 35 Second slider 36, 37 Actuator 38A, 38B DC servo motor 39A, 39B LM guide 40A, 40B cover 41 Control device 44 Lifter Device 45 Support arm 46 Lifting motor 47 Drive mechanism S Floor D Locking hole

Claims (4)

[Claims] 1. A trolley body having a plurality of wheels at a lower portion,
A trolley with a clean device, wherein the trolley body is provided with a clean air supply device, wherein the trolley body is provided with a clean body, and the inside of the trolley body is provided with a clean air supply device. A trolley with a clean device, which is provided with a retracting device for delivering and receiving the transported object. 2. The trolley with a cleaning device according to claim 1, wherein the retracting device has a multi-step retracting portion. 3. The trolley with a cleaning device according to claim 1 or 2, wherein the retracting device has an actuator part covered. 4. The trolley with a cleaning device according to claim 1, wherein stop locating means is added to the trolley body.