JP2515215B2 - Simple workbench - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple work table which can be moved up and down for work in high places.

[0002]

2. Description of the Related Art Conventionally, hoisting equipment and hoisting devices used for work at high places such as replacement of street lights, replacement of signboard lighting, installation of various signals and display boards, are ladders, ladder cars, and automatic hoisting height. There are local work vehicles and mobile cranes. Lifting tools and devices are used properly according to the nature of the site work. For example, ladders have a limited working height,
It is lightweight and effective for places with a narrow work range and light work. The ladder truck can handle narrow road conditions and can work efficiently at relatively high places. The automatic lifting work vehicle and crane truck are suitable for continuous work at high places and a large amount of work that is frequently moved, and are effective in a place where the road is wide.

[0003]

As described above, each lifting tool or device is selectively used for improving work efficiency depending on the height, the nature of work, the frequency of movement, the work environment, and the like. ing. Of course, the lifting equipment / devices are low-priced due to their performance, and also expensive ones such as an automatic lifting work vehicle. However, the efficiency of work at high places is related to the performance of the lifting equipment and the device itself, as well as road conditions, the type and content of work, the age group of workers, work skill, and the like. Conventional tools and devices are also selected in terms of economic efficiency, but if the road is narrow, the amount of work is large, the movement is frequent, and the work is performed at a relatively high place, then another suitable one is suitable. There was no device. For example, when exchanging street lights and mercury lamps in a relatively narrow road situation such as Tokyo's ward, where traffic is heavy and day and night, vehicles for automatic lifting work of 0,75 to 3,0 tons are required. It is difficult to park in, so in practice, every time another car passes by, it moves or the traffic is stopped. From a traffic standpoint, parking and stopping large work vehicles can lead to unexpected traffic accidents and dangers, and even when not in use, the telescopic arms and bending mechanism arms are huge, and there is a problem with parking lots. In addition, there is a problem that it is economically incompatible with the contents of work because it is expensive. On the other hand, ladders have problems in mobility and worker safety. Thus, in recent work at heights, a more compact lifting device that meets the work content, road conditions and work environment is required, and due to the parking space, the truck can be used as it is when not in use. Was requested. INDUSTRIAL APPLICABILITY The present invention is applied to work at heights of about 2 to 4.5 m,
This is a simple workbench that can be used for safe work in a relatively narrow space.

[0004]

SUMMARY OF THE INVENTION The present invention has a structure for raising and lowering a workbench (bucket) with a pneumatic lifter mounted on a small truck without using electricity such as a generator or a household power source, thereby improving mobility. In addition, the entire lifting device can be disassembled and assembled, and the low mode during movement and the high mode during operation can be easily changed manually.

In the present invention, the following pneumatic lifters, seats, bases, spacers, mounts, workbenches, telescopic ladders,
It is a combination of long and short pipes and long and short wires that can be disassembled on the cargo bed of a small truck supported by a jack, and an air pressure lifter is self-supported at approximately the center of the cargo bed.
A long pipe is pierced through the pipe guide holes of the seat, base, spacer, and mounting stand, and the lifting base of the pneumatic lifter is connected to the mounting base on which the workbench is mounted, and the long pipe is used as a guide to move up and down. And, the long wire is stretched in 4 directions at the highest position of the workbench, while the short pipe is extended from the long pipe at the lowest position of the workbench and the short wire is stretched in 4 directions. It is a workbench. The A pressure lifter has a self-supporting leg and a telescopic shaft and a cord switch depending on the atmospheric pressure of a cylinder loaded on a loading platform. The tip of the telescopic shaft is fitted into a receiving groove at the bottom of the mounting base to raise and lower the mounting base. A structure with a cross rod. Four B seats are arranged in a quadrangle on the platform, a pipe insertion tube is provided on the top, and a vibration-proof rubber is attached to the back surface of the bottom plate. The C base is a quadrilateral frame body that is fixed by bridging the upper edge of the cargo door, and has four pipe guide holes that penetrate the pipe. The D spacer has a quadrangular frame body having four pipe guide holes penetrating the pipe and a lock nut provided in the pipe guide hole. The E mount is a frame on which a workbench is placed, a cross rod receiving groove is provided at the bottom, wire stop rings are provided at four locations, and pipe guide holes are provided at four locations to penetrate the pipe.
The structure of a quadrilateral frame with bearings that come in contact with each pipe guide hole from above and below in three directions. The F workbench is a frame stand that is placed on the mount and has at least a bottom portion and a lower half portion formed of a panel, and is provided with a telescopic ladder attachment ring. The G-expandable ladder is made by connecting a plurality of ladders in parallel. The ladder at the tip has a hook that hangs on the attachment ring of the workbench, and the tip is locked to the workbench to synchronize with the lifting and lowering of the workbench. It expands and contracts. H long and short pipes are used by exchanging them when changing the height of the workbench or moving the work place, and serve as rails for raising and lowering the workbench. It is inserted into each of the seats and erected so as to pass through the pipe guide holes of the base, spacer and mounting base. I The long and short wires are used by exchanging them when the workbench is at the highest position and the lowest position, respectively, and are used between the wire stop ring provided on the cargo door and the wire stop ring provided on the mounting base. A structure that connects a tongue buckle and a snap. The J-jack supports a small truck with a set of four, has an open-legged self-supporting leg with an anti-vibration rubber that also serves as an insulation, has a chain hook that hangs on the edge of the loading platform, and has a lifting drive handle. Configuration.

In the simple workbench having this structure, the pneumatic lifter is placed on the truck bed supported by the jack, the catch is placed, the base is attached to the upper edge of the luggage door, the spacer is mounted, and the workbench is mounted. It mounts a screwed mounting base, inserts a pipe and assembles it. It is easy to assemble, and disassembling is as simple as pulling out the pipe. If this pipe is a long pipe, the workbench moves up and down using this as a guide, and if it is a short pipe, it does not protrude excessively, so that it is a convenient form for so-called movement. In addition, a long wire is stretched from the loading platform to the work platform so that the work platform stops at the highest position and does not swing, and a short wire is stretched when the work platform is at the lowest position.

The simple workbench according to the present invention was developed for work at a height of about 2 to 5 m, and has a minimum necessary device configuration for mounting a small number of people. Normally, the workbench is lifted, and the worker climbs up the telescopic ladder and enters the workbench to perform work. In addition, structural strengths such as pipes that meet safety standards are given, and in order to regulate the maximum position, a long wire of a predetermined length is connected to the workbench in advance and the height of the maximum position is set. Since it is adjusted by the atmospheric pressure lifter, the height is controlled in a double sense. The workbench stops at a predetermined position and is stretched in four directions with the upper edge of the bed by a long wire. Further, if the spacer is pushed up and screwed in the middle, the four long pipes are held by penetrating the pipe guide holes at the upper, lower and middle positions.

The simple workbench according to the present invention uses a pneumatic lifter as a driving principle to move up and down the workbench, and the drive shaft of the pneumatic lifter can be stopped at an arbitrary height. The lifting operation is guided by a pipe, and is supported in four directions by wires at the uppermost position and the lowermost position. The work table is raised and lowered extremely smoothly by the rolling of a total of 24 rollers supporting the pipe.

The parts constituting the simple workbench of the present invention are
Since it uses commercially available electronic materials, parts can be easily replaced and can be disassembled.The functions of the pneumatic lifter and jack are independent if they are removed, and the base, spacer, and mounting base can be removed. For example, it can be used as a small truck itself. This disassembling and assembling method is also useful for utilizing the constituent members and reducing the weight.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a simple workbench according to the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a simple workbench, and FIG. 2 is a rear view. FIG. 3 is a side view of a state in which the workbench is lowered and moved. In the embodiment, a work platform that moves up and down is placed on a light truck 1, and the light truck 1 is a light truck 1 having a normal four-wheel tire 5 having a luggage carrier 2 and a luggage carrier door 3 (three-way door). Small truck 1
A wire stop ring 4 is provided on the luggage carrier door 3, and a work rotating light 6 and a leveler 7 are provided as equipment. The simple workbench of the embodiment is the following pneumatic lifter 13, antivibration rubber seat 10, base 14, spacer 15, mount 16, workbench 17, telescopic ladder.
18, long pipe 11, short pipe 12 and long wire 1
9. A short wire 20 is disassembled and assembled on a loading platform 2 of a small truck 1 supported by a jack 21 provided with an insulating rubber on the bottom of an electric shock-preventing upper leg. The pneumatic lifter 13 is made to stand on the center of the loading platform 2 by itself, and the long pipe 11 is erected through the pipe seats 141, 151, 162 of the seat 10, the base 14, the spacer 15, and the mounting base 16, and the working platform 17 is used. Mounted with 16
Connect the tip of the lifting shaft of the pneumatic lifter 13 to the long pipe 11
It is moved up and down as a guide, and a long wire 19 is stretched in four directions at the highest position of the workbench 17, while at the lowest position of the workbench 17, a long pipe 11 is replaced by a short pipe 12 to make a short wire 20 in four directions. It is stretched.

Next, each component will be described. A: The air pressure lifter 13 is a telescopic shaft 131 and a cord switch depending on the pressure of the cylinder 132 loaded on the platform 2 and a cord switch (a switch is provided at the tip of a long cord for remote control).
And a cross rod 13 that fits in the receiving groove 164 at the bottom of the mount 16 to the tip of the telescopic shaft 131 and moves up and down the mount 161.
3 is provided. The pneumatic lifter 13 is self-supporting on the luggage carrier 2 and can be easily removed. The atmospheric pressure lifter 13 of the embodiment uses liquefied carbon dioxide gas as a drive source,
The lifting weight is 150 kg. Since carbon dioxide is used, there is no danger of catching fire during electrical work. It should be noted that air from an air compressor can also be used as a drive source. The air pressure lifter 13 can be moved up and down at any position, and can be smoothly moved up and down. B: Four seats 10 are arranged in a quadrangle on the platform 2, a pipe insertion cylinder 101 is provided on the upper portion, and a vibration-proof rubber is attached to the back surface of the bottom plate 102. The seat 10 serves to fix the lower ends of the pipes 11 and 12, but can be easily put away. Also,
It can be arranged and fixed in advance on a quadrilateral rubber plate. C: The base 14 is a quadrangular steel frame body which is fixed to the upper edge of the cargo door 3 by bridging and is provided with four pipe guide holes 141 penetrating the pipes 11 and 12 at four corners of the quadrilateral. is there. The base 14 is fixed to the upper edge of the luggage door 3 by fixing nuts, and the pipe guide hole 141 is provided with two stop nuts for stopping the pipes 11 and 12 penetrating therethrough. Further, a fixing metal fitting for supporting the pneumatic lifter 13 with a nut is provided at the center of the base 14. D; The spacer 15 has pipe guide holes 151 penetrating the pipe at four corners of the quadrangle, and the pipe guide holes 151
It is a quadrilateral steel frame body provided with a lock nut. As the spacer 15, four pipes 11 are erected, and after the work table 17 is completely raised, it is raised by hand and stopped at about the middle, and a lock nut provided in the pipe guide hole 151 is tightened and fixed. The spacer 151 has four pipes 11 with their pipe guide holes.
It will be fixed at the position of the quadrilateral corner of 151. The spacer 15 is used to prevent the standing pipes 11 and 12 from swinging and to stop the workbench 17 at the middle stage in case of an unexpected situation. E: As shown in FIG. 4, the mounting base 16 is a steel frame on which the workbench 17 is mounted. The bottom of the mounting base 16 is provided with cross-shaped rod receiving grooves 164, and the four corners of the quadrilateral are provided with wire retaining rings 161. Attached, 4
A quadrilateral steel frame body is provided with pipe guide holes 162 penetrating the pipes at respective positions, and bearings 163 provided at the upper and lower positions of each pipe guide hole 162 so as to be adjustable in three directions. The receiving groove 164 of the cross rod may be a metal fitting curved in an inverted U shape. The bearings 163 are provided so as to come into contact with each of the upper and lower positions of the four pipe guide holes 162 from the three directions so as to be adjustable forward and backward. In the embodiment, a total of 24 bearings 163 are arranged. Bearing 163 is a pipe
It is important to make fine adjustments so that the bearings evenly contact 11 and 12, and a horizontally elongated slide hole is formed in the bearing to allow the bearing shaft to slide forward and backward to be adjustable. One pipe 11, 1
2 to 3 bearings 16 above the pipe guide hole 16
3 contacts from three directions at an angle of 120 degrees, and the three bearings 163 at the bottom contact from three directions at an angle of 120 degrees at a starting point deviated by 60 degrees. That is, the bearing 163 is in contact with the pipes 11 and 12 from above and below in six directions at an angle of 60 degrees. The bearing shaft is made a little longer so that it can be easily adjusted forward / backward and finely adjusted left and right. F: The work table 17 (bucket) is placed on the mounting table 16,
Panel at least on the bottom and bottom half (punching metal)
It is a frame base with a door that opens and closes with a handrail and a hinge formed by
A worker rides and works in a high place. At the bottom of the frame is a mounting ring 172 for the telescopic ladder 18.
The workbench 17 (bucket) is fixed to the mounting base 16 with nuts. G: The telescopic ladder 18 is formed by connecting a plurality of ladders in parallel, and the attachment ring 17 of the workbench 17 is attached to the ladder at the tip.
It is equipped with a hook for hanging on 2, and the tip is locked to the workbench 17,
It is configured to expand and contract in synchronization with the up-and-down movement of the work table 17. The telescopic ladder 18 is made up of a plurality of ladders that can be extended and retracted by rollers. H: The long and short pipes 11 and 12 are used by exchanging when changing the height of the workbench 17 or moving the work place, and serve as rails for lifting and lowering the workbench 17, with four long and short pipes It is a pair. Insert into 4 seats 10, base 14 and spacer
The pipe 15 and the mounting base 16 are erected so as to pass through the pipe guide holes 141, 151, 162. The long pipe 11 is used upright when the work table 17 is moved up and down. The short pipe 12 is mainly used when storing or moving, and the work table 17 is lowered to the lowest position and the long pipe 11 is removed and replaced. I: The long and short wires 19, 20 have the structure shown in FIG. 5, and are used by exchanging them when the workbench 17 is at the highest position and the lowest position, respectively. Wire stop ring 4 provided on the loading door 3 and wire stop ring 161 provided on the mounting base 16
It is stretched between and. The long wire 19 is stretched when the workbench 17 is at the highest position to stabilize the workbench 17. The short wire 20 is connected when the work table 17 is at the lowest position (when moving or storing). In the embodiment, as shown in FIG. 5, a long wire 19 is bent and a bent ring is formed by a wire fastener 194, and a short wire 20 is continuously provided on the other side so that the long wire can also be used. A snap 193 is connected to the folding ring, and a tan buckle 192 and a wire retaining ring 4 provided on the luggage carrier door 3 are connected by a jackle 191. The tan buckle 192 allows fine adjustment of the length of the long and short wires 19, 20. Snaps 193 are provided on the other ends of the long and short wires 19 and 20 and are attached to and detached from the wire stop ring 161 of the mounting base 16. J: The jack 21 supports the small truck 1 with a set of four, and is an open-standing self-supporting leg with an insulating and vibration-proof rubber on the bottom of the leg.
Chain hook 21 equipped with 211 and hanging on the edge of the loading platform 2
2, and a lifting drive handle 213 is provided. The jack 21 is provided for maintaining the horizontal of the small truck 1 and stabilizing it, and the tire 5 of the small truck 1 is provided.
However, it is most stable when it is lifted so that it slightly touches the ground.

The simple workbench shown in the embodiment has a four-legged pneumatic lifter with a lifting weight of 150 Kg placed on a small truck (trademark: Daihatsu Climber loader length 1940 mm, maximum loading capacity 0.35 t), and has a width substantially equal to the width of the loading platform. Base (width 1445 mm
Depth of 620 mm) is attached, and a long pipe of 3600 mm is erected and combined. With the long pipe removed and replaced with a short pipe, the height to the workbench is approximately 2250 mm.
Is. It takes about 15 seconds to climb from the lowest position to the highest position.
30 seconds, the descent is about 35 to 50 seconds. It should be noted that the above is merely an example, and the design of the workbench 17 and fine parts can be variously changed, and the present invention is not limited to this.

Next, the operation of the simple workbench according to the present invention will be described based on an embodiment. This simple workbench 1 is constructed so that it can be assembled and disassembled with the above-mentioned components by fastening with nuts. At the time of dispatch, it moves in a state of a simple work table loaded with a short pipe 12 and stops the light truck 1 at the work site. At this time, the work rotary lamp 6 is turned on and the leveler 7 is set. Then, if necessary, the car hooks or the four jacks 21 are hooked on the chain hooks 212 of the jack 21 on the four edges of the luggage carrier door 3 of the small truck 1. Since the handles 213 of the two jacks 21 on one side face each other, operate them with the left and right hands to adjust them while looking at the leveler 7. Adjust the other side in the same way. It is preferable that the entire tire 5 comes into light contact with the ground and becomes horizontal.

Next, the short wire 20 is removed, and the long wire 19 is attached to the wire stop ring 161 of the mount 16 and the cargo door 3.
Connect to the wire stop ring 4 of. Then, the short pipes 12 are removed from the pipe guide holes 141, 151, 162, and the removed pipes are replaced with the long pipes 11 to erect four long pipes 11. Operate barometric lifter 13
Raise 17 to the highest position. At this time, at the same time, the telescopic ladder 18 grows and the system for climbing up is created. Long wires 19 are stretched in four directions to stably support the workbench 17. The spacer 15 is lifted up to the longer pipe 11 and fixed with a nut at an appropriate height approximately in the middle. Long pipe 11
Is supported from the bottom by a number of bearings 163 of the seat 10, the base 14, the spacer 15, and the mount 16, and the work table 17 can be stably moved up and down. The worker can climb the telescopic ladder 18 and enter the work table 17 to safely perform a predetermined work.

As described above, in the simple workbench of the present invention, after the long pipe 11 is erected, the pneumatic switch 13 is activated by the cord switch to raise the workbench 17, and after the stop the wire 19 is stopped. Adjust the tension with the tan buckle 192, inspect and check, and use the telescopic ladder 18 to get on the workbench 17,
Predetermined work can be made safe.

After the work, there is an operator and the spacer 15
Loosen the nut and lower the nut to lower the pneumatic lifter 13. The telescopic ladder 18 automatically folds and the workbench 17
Descends to the lowest position. In this state, the long pipe 11 is replaced with the short pipe 12, and the long wire 19 is changed to the short wire 20 to stop the workbench 17. The work rotating lamp 6 is turned off, the work is completed, and the work is moved.

[0017]

The simple workbench according to the present invention has the above-described structure and operation, and has the following unique effects. Since the constituent parts can be assembled and disassembled freely without impairing their functions, the manufacturing cost is low and it is economical. Since it is compact and has good mobility, it is suitable for work such as street light replacement work that is subject to road conditions and is relatively mobile and relatively high in height. Since the change between the moving state and the working state is performed only by replacing the long and short pipes, workability is good. The entire device is compact, space saving,
Moreover, since the driving part is a pneumatic lifter, there is little danger of ignition and noise. Since the air pressure lifter is located just below the workbench, it has a buffer function in case of emergency. As described above, the simple workbench according to the present invention is capable of disassembling and assembling at a high-place work site in a short time, and has a safe and structurally simple automatic lifting function. Can respond to.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a simple workbench according to the present invention.

FIG. 2 is a rear view showing an embodiment of a simple work table according to the present invention.

FIG. 3 is a side view showing an embodiment of a simple workbench according to the present invention, with the workbench lowered.

FIG. 4 is a perspective view showing an embodiment of a mounting base which is a constituent member of a simple workbench according to the present invention.

FIG. 5 is a partial perspective view of a wire which is a constituent member of a simple workbench according to the present invention.

[Explanation of symbols]

 1 light truck 2 loading platform 3 loading platform door (three-way door) 4 wire retaining ring 5 tire 6 rotating light for work 7 leveler 10 (with anti-vibration rubber) seat 101 pipe insertion tube 11 long pipe 12 short pipe 13 atmospheric lifter 131 Telescopic shaft 132 Cylinder 133 Cross rod 14 Base 141 Pipe guide hole 15 Spacer 151 Pipe guide hole 16 Mounting base 161 Wire stop ring 162 Pipe guide hole 163 Bearing 164 (Cross rod) receiving groove 17 Working table 171 Panel 172 Ladder mounting ring 18 Telescopic ladder 19 Long wire 191 Jackle 192 Tanbuckle 193 Snap 194 Wire clamp 20 Short wire 21 Jack (with insulating rubber isolators on the bottom of the foot) 211 Jack leg 212 Chain hook 213 Handle

Claims (1)

(57) [Claims] 1. The following pneumatic lifter, pedestal, base, spacer, mount, workbench, telescopic ladder, long and short pipes, and long and short wires can be freely disassembled on the loading platform of a small truck supported by a jack. It is a combination, and the air pressure lifter is self-supporting in the center of the loading platform, and a long pipe is pierced through each pipe guide hole of the receiving base, base, spacer, and mounting base, and the work platform is mounted. Connect the tip of the lifting shaft of the pneumatic lifter to the table and move it up and down using the long pipe as a guide. At the highest position of the workbench, long wires are stretched in four directions, while at the lowest position of the workbench, long pipes are changed to short pipes. A simple workbench that can be replaced and stretched with short wires in 4 directions. A: The pneumatic lifter has a self-supporting leg and a telescopic shaft and a cord switch depending on the atmospheric pressure of a cylinder loaded on the bed, and the tip of the telescopic shaft is fitted into a receiving groove at the bottom of the mounting base to raise and lower the mounting base. A structure with a cross rod that allows it. B: Four pedestals are arranged in a quadrangle on the platform, a pipe insertion cylinder is provided on the top, and a vibration-proof rubber is attached to the back surface of the bottom plate. C: The base is a quadrilateral frame body fixed to the upper edge of the cargo door by bridging and fixed, with four pipe guide holes penetrating the pipe. D: The spacer has a quadrangular frame body in which pipe guide holes penetrating the pipe are provided at four positions, and lock nuts are provided in the pipe guide holes. E: The mount is a frame on which the workbench is placed, the bottom of which is provided with a cross rod receiving groove, the wire retaining rings are provided at four locations, and the pipe guide holes that penetrate the pipe are provided at four locations.
The structure of a quadrilateral frame with bearings that come in contact with each pipe guide hole from above and below in three directions. F: The workbench is a frame stand that is placed on the mount and has at least a bottom portion and a lower half portion formed of a panel, and is provided with a mounting ring for a telescopic ladder. G: The telescopic ladder is a parallel connection of multiple ladders. The ladder at the tip has a hook to hang on the mounting ring of the workbench, the tip is locked to the workbench, and synchronized with the lifting and lowering of the workbench. And expands and contracts. H: The long and short pipes are used by exchanging when changing the height of the workbench or moving the work place, and serve as rails for raising and lowering the workbench, and a set of four long and short pipes, The structure is inserted into four seats and erected up through the pipe guide holes of the base, spacer and mounting base. I: The long and short wires are used by exchanging them when the workbench is at the highest position and the lowest position, respectively. A jack is provided between the wire stop ring on the cargo door and the wire stop ring on the mount. The structure that connects the buckle, the tan buckle and the snap. J: A set of four jacks supports a small truck. It has an open-standing self-supporting leg that has an anti-vibration rubber that also serves as an insulation, has a chain hook that hangs on the edge of the loading platform, and has a lifting drive handle. Configuration.