JPH04122588U - work trolley - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce costs with a simple configuration and improve workability in the forward and backward directions of the work cart. [Structure] A turntable 43 is provided on the mounting table 41 to rotate and orient the transported object 51 in a predetermined loading direction, and a loading plate 4 that also serves as a foothold is provided on the side of the mounting table 41.
4 can be attached and detached freely. Therefore, in a place where rotation is not possible, such as in a narrow space, the transported object 51 is directed in a predetermined carrying direction via the turntable 43, so that the transported object 51 itself should not be carried in at the construction site. Get closer to the place. As a result, even if the transport vehicle main body 20 itself is far from the place where the transported object 51 is to be transferred, the transported object 51 itself can be brought closer to that location, so that it can be kept at a predetermined height from the loading table 41 in a narrow space. It becomes easy to transfer the transported items to.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is suitable for high-altitude work at construction sites, electrical work sites, coating work sites, etc. Regarding work carts.

0002

[Conventional technology]

Conventionally, high-altitude work at construction sites, electrical work sites, coating work sites, etc. In this case, a work cart is used in which a work platform is attached to a movable cart so that it can be moved up and down. In such work carts, the work platform is equipped with a scaffold board that can be pulled out freely. If a scaffold board is required, the worker must take a low stance and pull out the scaffold board. There is. In addition, if the scaffolding board is no longer needed, it should be Therefore, the worker must be able to retract the scaffolding board as well.

0003 Therefore, pulling out and retracting the scaffolding board at the workbench is done by hand. Disadvantages include not being easy to operate and being dangerous if performed at high places. was there. To solve this problem, step on the switch on the top of the workbench. A work trolley that can automatically pull out and retract scaffolding boards. is being developed.

0004 FIG. 5 shows an example of such a work platform. It can be freely pulled out and retracted in the direction perpendicular to the forward direction (arrow direction in the figure). Two scaffolding boards 2 and 3 are provided. Below each scaffold board 2, 3 is a motor. 4 is placed. The motor 4 has a drive pulley 5 connected to an output shaft. A transmission 6 is connected. The drive pulley 5 is tensioned by a spring 7. One turn of the wire 8 is wrapped around the wire.

[0005] Projections 9 are provided at the four corners of the workbench 1 in a direction perpendicular to the forward direction of the workbench. , 10, 11, and 12 are provided. Each protrusion 9, 10, 11, 12 has a foot A drawer switch 9a, 10a or 11a that is operated when drawing out the field board 2 or 3, 12a is provided. In addition, each protruding portion 9, 10, 11, 12 is provided with a scaffold board 2. or retraction switch 9b, 10b or 11b, 12b operated when retracting 3 is provided.

[0006] For example, if you step on the drawer switch 9a with your foot, the scaffolding board 2 will move as indicated by the arrow in the figure. It is pulled out in the direction of mark a. Also, if you step on the retraction switch 9b with your foot, the scaffold board 2 is pulled in the direction of arrow b in the figure.

[0007]

[Problem that the idea aims to solve]

In this way, when using the scaffolding board 2 or 3 with the workbench 1 raised, the drawer Pull it out by stepping on the switch 9a, 10a or 11a, 12a with your foot. be able to. In addition, if scaffold board 2 or 3 is no longer needed, the retractable switch It can be retracted by stepping on 9b, 10b or 11b, 12b with your foot. Ru.

[0008] This prevents the danger of pulling out or retracting the scaffolding board 2 or 3 when working at heights. It became possible to avoid this. However, in such a work trolley, the scaffolding board 2 or 3 is Since it can be freely pulled out in the direction perpendicular to the forward direction, the work cart can be moved forward. Or, when proceeding with work such as electrical work along the backward direction, the forward or backward direction Whenever you are unable to reach the area to be worked on, move the work trolley. It is necessary to move.

[0009] In other words, during this movement, the work platform 1 must be lowered and the worker can move from the work platform 1 once. After getting off, press the operating lever (not shown) on the operating box provided on the moving trolley. Operate to move the work cart to the next work position. Next, the worker Step onto platform 1 and operate the remote control box (not shown) to raise work platform 1 to the specified height. rise to.

0010 Therefore, in the forward or backward direction of the work trolley, such operations are repeated. As a result, the workability of the work cart in the forward or backward direction decreases. cormorant. In addition, in such a work cart, the work platform 1 is equipped with two scaffolding boards 2 or 3. and a motor to pull them out and retract them separately. Since it is equipped with two pieces, it not only complicates the structure, but also reduces the cost of the work cart. This is hindering the decline.

[0011] The present invention was developed in response to these circumstances, and has a simple configuration that allows for cost reduction. It is possible to reduce stress and improve workability in the forward and backward directions of the work trolley. The purpose is to provide a work cart that can be improved.

0012

[Means to solve the problem]

In order to achieve the above-mentioned purpose, the present invention is designed to be able to be raised and lowered with respect to a mobile trolley. A single scaffold board is placed inside the workbench and can be pulled out by operating the foot switch. and a retractable work platform, with one end at both ends in the length direction of the work platform. Connect the wire ends of two wires and remove the wire end of this one wire. the part attached to the output shaft of one motor provided inside the workbench. The scaffolding board is configured to be wrapped around a pulley, and the scaffolding board is used to guide the moving vehicle forward and backward. It is characterized by being able to be freely pulled out and retracted in both directions.

[0013]

[Effect]

In the work trolley of the present invention, a single scaffolding board is installed inside the work platform so that the work trolley can move forward and backward. The drawer can be freely pulled out and retracted in the retracting direction, and the drawer and retracting operation is performed by one motor.

[0014] Therefore, when the work platform is raised, the When proceeding with work such as electrical work, the work should be carried out in that direction. When it is out of reach, the scaffolding board can be pulled out without moving the work cart. Therefore, it can be done. This allows you to move the work platform to the specified position after lowering the work platform. This eliminates the need to move the worktable a distance and then raise the workbench. Not only is the burden reduced, but the operating time is also eliminated.

[0015] In addition, such a workbench is particularly equipped with one scaffolding board and one motor. This not only simplifies the structure, but also reduces the cost of the work trolley. It is also possible to reduce labor costs.

[0016]

【Example】

Hereinafter, details of embodiments of the present invention will be explained based on the drawings. 1 and 2 show an embodiment of the work cart of the present invention. As shown in these figures, the work cart includes a moving cart 20, a link mechanism 30, and A workbench 40 is provided.

[0017] The movable trolley 20 is equipped with a body frame 21. of the body frame 21 At the bottom, there is an engine 22 that provides self-propelling power, and a mission device 2 that decelerates this output. Driven by power from the engine 22 obtained through 3 and the mission device 23 A crawler traveling device 24 is attached.

[0018] A support stand 26 is attached to the upper part of the vehicle body frame 21 via support legs 25, 25, . It is attached. A pair of left and right guide rails extending in the front-rear direction are provided on the upper part of the support base 26. 27 is installed. In addition, various operation controls are provided on the upper part of the vehicle body frame 21. An operating box 28 having a bar 28a is attached.

[0019] The link mechanism 30 includes link arms 31a, 31b, 32a, 32b, 33a. , 33b are provided. The link arms 31a, 31b are connected via the pivot 31. They are freely rotatable in opposite directions. The link arms 32a, 32b are connected to the pivot 3 2, they are rotatable in opposite directions. Link arms 33a, 33b are rotatable in mutually opposite directions via a pivot 33.

[0020] The other end of link arms 31a, 31b and one end of link arms 32a, 32b The parts are rotatably attached via connecting mechanisms 32, respectively. linka The other ends of the arms 32a, 32b and the one ends of the link arms 33a, 33b are Each is rotatably attached via a connecting mechanism 32. of link arm 31b An end portion of a cylinder 35 is rotatably attached in the middle. link arm The end of the movable shaft 34 of the cylinder 35 is rotatably attached to one end side. .

[0021] Then, due to the reciprocating linear motion force of the movable shaft 34 of the cylinder 35, the link mechanism 30 is designed to expand and contract. Here, the other end of the link arm 31b is a support base. It is rotatably attached to 26. On the other hand, the other end of the link arm 31a is equipped with a roller (not shown), which is connected to the guide rail above. 27. Therefore, the link mechanism 30 is When the link arm 31a extends, the other end of the link arm 31a extends along the guide rail 27. move closer to the other end of the arm 31b.

[0022] On the workbench 40, a scaffolding board 41 is movable in the forward and backward directions of the workbench. installed on. A safety fence 42 is attached to the upper surface of the workbench 40. As shown in FIGS. 3 and 4, a scaffold board 41 is movably installed inside the workbench 40. Rotating rollers 43, 43, . . . for mounting are rotatably provided via a shaft 43a. It is.

[0023] Stoppers 41a and 41b are provided at both ends inside the scaffold board 41. Further, wire ends 43a, 43b of the wire 44 are attached to both ends thereof with springs. Fastening members 41c and 41d are provided for fastening via 44a and 44b. There is. Switch contact members 41e and 41f are attached to the lower surface of the scaffolding board 41. There is.

[0024] A motor 45 is provided inside the workbench 40 . The motor 45 has an output A transmission 47 is connected having a drive pulley 46 connected to the shaft. driving pool A wire 44 is wound around the wire 46 once. Also, inside the workbench 40, there are wires. Engagement pulleys 44c and 44d that engage a portion of 44 are rotatably provided. Furthermore, inside the workbench 40, there is a microswitch 48 having a switch piece 48a. A microswitch 48B having a switch piece 48b and a switch piece 48b is provided.

[0025] These microswitches 48A and 48B are arranged so that the scaffolding board 41 is connected to the workbench 4. When the switch contact members 41e and 41f are pulled back into the inside of the switch piece 48a, the switch contact members 41e and 41f , 48b, it is turned off. As a result, the motor 45 is driven. is now suspended.

[0026] Furthermore, stoppers 49a and 49b are provided inside the workbench 40. Ru. Then, when the scaffolding board 41 is pulled out of the workbench 40, the scaffolding board 41 is The toppers 41a and 41b are in contact with the stoppers 49a and 49b of the workbench 40. This prevents the scaffolding board 41 from moving. In addition, the number 4 in the figure 0A is a step operated by foot when pulling out the scaffolding board 41 along the backward direction of the work cart. Switch, code 40B is a foot operation when retracting the scaffolding board 41 along its backward direction. Each switch is shown in the figure below. In addition, the code 40C refers to the scaffolding board 41 as a workbench. A switch operated by foot when pulling out along the forward direction of the car, code 40D is a foothold Each switch is operated by foot when pulling the plate 41 along its forward direction. It shows.

[0027] The work cart having such a configuration performs the following operations. First, operate the predetermined operation lever 28a of the operation box 28 of the work cart to perform the operation. Move the industrial truck to the designated work site. At this time, the workbench 40 It is preferable to keep it lowered in order to maintain balance.

[0028] When you arrive at the designated work site and it is necessary to raise the work platform 40, do so. to a predetermined height. At this time, when raising the work platform 40, This can be done by operating a predetermined operating lever 28a of the operation box 28, or by using a remote control box. There are two ways to do this: by operating a predetermined operation button (not shown). be. For this reason, if there are two or more workers, one person gets on the work platform 40 and the other Have a worker operate a predetermined operating lever 28a of the operating box 28. be able to. However, if you are working alone, please follow the instructions for operating the remote control box. This can be done by operating the operation button.

[0029] After raising the work platform 40 to a predetermined height with the worker on it, the work begins. It can be carried out. At this time, if the work is carried out in the forward or backward direction of the work cart, If you cannot reach the desired location, pull out the scaffolding board 41 from inside the workbench 40. vinegar. This operation is performed using the switch 40A or 40 provided at the corner of the top surface of the workbench 40. This can be done by stepping on C with your foot. Therefore, the scaffolding board 41 To pull out the work cart in the forward direction, step on the switch 40C.

[0030] At this time, the motor 45 is driven and the drive pulley 46 rotates clockwise. child As a result, tension is applied to the wire end 43a side of the wire 44. The scaffolding board 41 is pushed out to the forward direction side of the work truck via each rotating roller 43.

[0031] The movement of the scaffold board 41 is controlled by the stopper 41a of the workbench 40. -49b, it is stopped. On the other hand, there is a scaffold inside the workbench 40. To pull back the plate 41, step on the switch 40D with your foot. This allows the mode The driving force of the motor 45 causes the drive pulley 46 to rotate counterclockwise, causing the wire 44 to rotate. Since tension is applied to the ear end 43b side, the scaffold board 41 is attached to each rotating roller. 43 into the workbench 40. At this time, the movement of the scaffolding board 41 is The switch contact member 41f contacts the switch piece 48b of the microswitch 48B. Then, the drive of the motor 45 is stopped, thereby stopping the operation.

[0032] On the other hand, the movement of pulling out and retracting the scaffolding board 41 in the backward direction of the work cart is performed by the switch. By operating the switches 40A and 40B, the same operation as above is performed. In this way, in this embodiment, one scaffold board 41 is installed inside the workbench 40. Drawers can be freely pulled out and retracted in the forward and backward directions of the car, and these drawers And the retracting operation is performed by one motor.

[0033] Therefore, work such as electrical work should be carried out along the forward or backward direction of the work trolley. If you are unable to reach the area to be worked on in that direction, This can be done by pulling out the scaffolding board 41 without moving the work cart. As a result, after lowering the work platform 1, the work cart can be moved a predetermined distance to perform further operations. The work load is reduced because there is no need to perform operations such as raising the workbench 1. The work efficiency is improved because the operation time is also unnecessary.

[0034] In addition, in such a workbench 1, especially one scaffold board 41 and one motor 45, which not only simplifies the structure, but also reduces the cost of the work cart. It is also possible to reduce labor costs.

[0035]

[Effect of the idea]

As explained above, according to the work platform of the present invention, when the work platform is raised, , When proceeding with electrical work, etc. along the forward or backward direction of the work trolley, that person If you cannot reach the area to be worked on in the opposite direction, move the work cart. This can be done by pulling out the scaffolding board without having to do so. For this reason, work Operations such as moving the trolley a certain distance are no longer required, which only reduces the work burden. Moreover, since the operation time is also unnecessary, work efficiency can be improved. In addition, such a workbench is particularly equipped with one scaffold board and one motor. Not only can the structure be simplified, but the work trolley can also be It is also possible to reduce costs.

[Brief explanation of drawings]

FIG. 1 is a side view showing an embodiment of a work trolley of the present invention.

FIG. 2 is a side view showing the workbench of FIG. 1 in an elevated state;

FIG. 3 is a partially cutaway sectional view showing the workbench of FIG. 1;

FIG. 4 is a partially cutaway sectional view showing the workbench of FIG. 1;

FIG. 5 is a partially cutaway plan view of a workbench of a conventional workcart.

[Explanation of symbols]

20 Mobile trolley 21 Body frame 22 Engine 28a Operation lever 28 Operation box 24 Crawler traveling device 30 Link mechanism 35 cylinder 40 Workbench 41 Scaffolding board 44 Wire 44a, 44b spring 44c, 44d Engagement pulley 40A, 40B, 40C, 40D switch

Claims (1)

[Scope of utility model registration request] Claim 1: A work platform in which a work platform is provided to be movable up and down with respect to the movable platform, and a scaffold board is provided inside the platform so that it can be freely drawn out and retracted by operating a foot switch. The wire ends of one wire are connected to both ends in the length direction, and the part of this one wire excluding the wire ends is attached to the output shaft of one motor provided inside the workbench. 1. A working trolley, characterized in that the scaffolding plate is wound around a pulley that is wound around a pulley, and the scaffolding plate can be freely pulled out and retracted in the forward and backward directions of the movable trolley.