JP6561344B2 - Moving trolley - Google Patents

Description

  The present invention relates to a moving carriage for performing work at a high place in a house or a warehouse. More particularly, the present invention relates to the technology of a mobile carriage provided with a height-adjustable floor.

  Conventionally, an upper step has been placed above the machine base frame so that workers can work at high places in a house or warehouse, etc., so that boarding and exiting can be easily performed between the machine base frame and the upper step. A technique is known in which steps for getting on and off are arranged, and further, front wheels and rear wheels are arranged so as to be easily moved on both front and rear sides of the machine base frame (see, for example, Patent Document 1).

JP 2001-354142 A

However, in conventional mobile carts, the height of the upper step is constant, so when working on the upper step, the height at which the operator can work is limited, and work at a slightly higher position is required. If you want to, you can not work, and if you are short, you may be forced to work in an unreasonable posture. In addition, when crops such as cucumbers, tomatoes, and peas are grown from low to high positions, it is necessary to prepare a moving cart that matches the height.
Therefore, in view of such a problem, the present invention intends to provide a movable carriage that can be handled by a single movable carriage even in a work site having a wide vertical work width.

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
That is, in claim 1, a machine base frame having a pair of left and right front wheels and a rear wheel, a support base frame disposed above the machine base frame with a predetermined space, and an elevating mechanism on the support base frame And a ladder extending downward from a lower portion of the upper floor, and the upper floor and the ladder have a plurality of steps with equal vertical intervals. Is.

According to a second aspect of the present invention, in the state where the upper floor is raised to the highest position, the interval between the lowermost step of the ladder and the ground is equal to the vertical interval between the steps .

  According to a third aspect of the present invention, one of the front wheels and the rear wheels is a steering wheel, and the other is a driving wheel.

As effects of the present invention, the following effects can be obtained.
In other words, when working at a high place, it is possible to work at a desired height position on the upper floor in a staircase shape that matches the height and work position, and the work width is widened. The floor can be lifted and adjusted to the desired height, allowing work to be performed, improving work efficiency, and reducing fatigue without working in an unreasonable posture.

The side view which showed the whole structure of the mobile trolley | bogie which concerns on one Example of this invention. Similarly rear view. The side view of the state which raised the upper floor. The side view of the mobile trolley made into the structure driven by a motor.

  Below, with reference to FIG.1 and FIG.2, the structure of the mobile trolley | bogie 1 which concerns on this invention is demonstrated. In the following description, the direction of the arrow F is defined as the front. In this embodiment, the mobile cart 1 is described as a cart for high altitude work used in pollination work, management work, harvesting work, etc. in a greenhouse, but is not limited to this. It can also be applied to wiring work in the factory and wall repair work.

The movable carriage 1 is used for work at “slightly high places”, and is mainly arranged on the traveling unit 10 for moving the movable carriage 1 and on the traveling unit 10 so that the height can be adjusted. The elevating mechanism 20 and the work platform 30 that is disposed on the elevating mechanism 20 and on which an operator gets on work are provided.
Here, “slightly high place” means that the operator can reach the ceiling in the greenhouse, but is not limited to this. It includes a wide range of high positions where it is difficult to work in a proper posture.

  The traveling unit 10 mainly includes a machine frame 11, a pair of left and right front wheels 12 and 12, a pair of left and right rear wheels 13 and 13, front posts 14 and 14 erected on both the front left and right sides of the machine frame 11, and a machine frame. 11 is composed of rear struts 15, 15 erected on the left and right sides of the rear 11, front struts 14, 14 and a support base frame 16 fixed to upper ends of the rear struts 15, 15.

The machine frame 11 is a rectangular frame, and a front axle 17 is supported on a front lower portion of the machine frame 11 so as to be rotatable in the left-right direction, and front wheels 12 and 12 are fixed to both left and right ends of the front axle 17. Further, a rear axle 18 is supported at the rear lower part of the machine base frame 11 so as to be rotatable in the left-right direction, and the rear wheels 13 and 13 are fixed to both left and right ends of the rear axle 18. The front wheel 12 or the rear wheel 13 or the front axle 17 or the rear axle 18 is provided with a stopper (not shown) so that it does not move unintentionally by operating the stopper during operation.
As shown in FIG. 3, the front strut 14 and the rear strut 15 are constituted by pipes, and a space surrounded by the machine base frame 11, the front struts 14 and 14, the rear struts 15 and 15 and the support base frame 16 is a storage space. The container 2 and the farm equipment can be placed and stored.

  The traveling unit 10 can also be configured to be able to travel by the power of a prime mover such as a motor. That is, as shown in FIG. 4, a motor 40 is mounted and fixed as a prime mover on the machine frame 11, a sprocket 41 is fixed on the output shaft of the motor 40, and a sprocket 42 is mounted on the rear axle 18. A chain 43 is wound between the sprocket 42 and the sprocket 41 so that the power from the motor 40 can be transmitted to the rear wheels 13 and 13 and rotated. The motor 40 can supply electric power from a battery 46 placed on the machine base frame 11, and an operation unit (not shown) for controlling the rotation direction and stop of the rear wheels 13, 13 is arranged on the work table 30.

  Further, when the rear wheels 13 and 13 are drive wheels, the front wheels 12 and 12 can be steered wheels. In this case, as shown in FIG. 4, a steering shaft 44 is erected at the center of the left and right of the front axle 17 and extends upward, and the steering shaft 44 is rotatably supported by the machine base frame 11. The shaft portion of the handle 45 is fitted and fixed to the upper portion of the steering shaft 44. Thus, the steering wheel 45 can be steered by changing the direction of the front wheels 12 and 12 by turning the handle 45 left and right. However, the rear wheels 13 and 13 can be steered wheels, and the front wheels 12 and 12 can be drive wheels, and are not limited.

  As shown in FIGS. 1, 2, and 3, the elevating mechanism 20 includes a pair of left and right inner links 21 and an outer elevating link 22 that are pivotally supported by a connecting shaft 23 at the center in the longitudinal direction. The lower front end of 21 is pivotally supported by the support shaft 24 at the front portion of the support base frame 16, and the upper front end of the outer lift links 22, 22 is pivotally supported by the support shaft 25 at the front portion of the upper floor 32 of the work platform 30. Is done. The upper and rear ends of the inner elevating links 21 and 21 are connected by a support shaft 26, and rollers are rotatably supported on both left and right sides of the support shaft 26, and the rollers are rails provided on the left and right lower surfaces of the upper floor 32 in the front-rear direction. It is slidably supported by. The lower rear ends of the outer elevating links 22 and 22 are connected by a support shaft 27, and rollers are rotatably supported on the left and right sides of the support shaft 27. The rollers are rails provided on the upper left and right surfaces of the support base frame 16 in the front-rear direction. It is slidably supported by. In this way, the inner elevating link 21 and the outer elevating link 22 are connected in an X shape to constitute a pantograph-like elevating mechanism 20 and interposed between the support base frame 16 and the upper floor 32.

A boss 28 is fixed to the left and right middle part of the support shaft 27, and a screw part at the tip of the elevating operation handle 29 is screwed to the boss 28, and the operating part of the elevating operation handle 29 protrudes rearward. ing.
In such a configuration, when the elevating operation handle 29 is rotated to move the boss 28 forward, the front and rear widths of the inner elevating link 21 and the outer elevating link 22 are shortened, and the upper floor 32 can be raised. On the contrary, when the lifting operation handle 29 is rotated in the opposite direction to move the boss 28 backward, the front / rear width of the inner lifting link 21 and the outer lifting link 22 becomes longer, and the upper floor 32 can be lowered. it can. In this way, the work table 30 can be raised and lowered to an arbitrary height by manual operation of the lifting operation handle 29. However, as shown in FIG. 4, an electric cylinder 48 is interposed as an elevating actuator between the connecting shaft 23 and the support base frame 16, and the work table portion 30 is moved up and down by extending and contracting the electric cylinder 48. The raising / lowering drive structure is not limited. However, the elevating actuator can be arranged in place of the elevating operation handle 29. Further, the configuration of the elevating link mechanism is not limited to the X shape, and may be configured as a “<” shape.

The work table 30 is mainly composed of an upper floor 32, a front handrail 33, horizontal handrails 34 and 34, a ladder 35, and the like.
The upper floor 32 is formed in a step shape when viewed from the side. The upper floor 32 is provided with a stepped portion on the rear side so that the front side becomes higher. In the case of the present embodiment, the rear part of the upper floor 32 is a first step 32a, the middle part of the upper floor 32 is a second step 32b, and the front part of the upper floor 32 is a third step 32c. The front and rear widths of the respective steps 32a, 32b, and 32c are substantially the same length, and are wide enough for a foot to be placed thereon. However, the number of steps is not limited, and the number of steps may be two or four or more.

  The front handrail 33 is formed by bending a pipe into a substantially inverted U shape when viewed from the front, and has a lower end standing on the front portion of the upper floor 32. Reinforcing frames 33a and 33a are laterally provided in the right and left direction in the middle of the front handrail 33 in the vertical direction. The lower part of the front handrail 33 is configured such that guide rods 49 and 49 erected from the front part of the support base frame 16 are slidably inserted to guide the raising and lowering of the work base part 30.

  The horizontal handrails 34, 34 are formed by bending a pipe into a substantially square shape when viewed from the side, extending upward from the left and right rear ends of the upper floor 32, and having a predetermined height of the upper floor 32 that is easy to support by hand. The front end of the front handrail 33 is connected and fixed to the rear surface of the middle part of the front handrail 33. The front handrail 33 is inclined forward and upward according to the position of the third step 32c. Thus, the rear portions of the horizontal handrails 34 and 34 can be used as grips when the movable carriage 1 is moved, or can be used as handrails when climbing on the ladder 35. The upper portions of the horizontal handrails 34 and 34 are the left and right sides of the operator during the work. It can be a guard that supports the body in the direction or prevents it from falling.

  The ladder 35 includes left and right support columns 35a and 35a, and an upper step 35b and a lower step 35c that are provided between the support columns 35a and 35a. The upper ends of the support pillars 35a and 35a are fixed to the rear end of the upper floor 32 and extend downward, and an upper step 35b is provided horizontally in the middle of the upper and lower parts of the support pillars 35a and 35a. The lower step 35c is connected between the lower ends. The left and right intervals of the support pillars 35a and 35a are set to a width that allows enough footing, and the vertical intervals of the steps 35b and 35c and the interval between the upper step 35b and the upper floor 32 are the same as the first step 32a of the upper floor 32. The height of the second step 32b is almost the same as that of the second step 32b so that it can be easily climbed. As shown in FIG. 3, in the state where the work table 30 is raised to the highest position, the height between the ground and the lower step 35b is made to substantially coincide with the vertical interval of the steps 35b and 35c. So that you can get in easily.

  In such a configuration, when working, the front carriage 33 or the lateral handrail 34 is held and the movable carriage 1 is pushed to move to the work site. At the site, the worker rides on the position of the desired height from the first step 32a to the third step 32c of the upper floor 32 to perform the work. When it is desired to work at a higher position, the lifting operation handle 29 is rotated to raise the work table 30 to a desired height.

  As described above, the machine base frame 11 including the pair of left and right front wheels 12 and 12 and the rear wheels 13 and 13, the support base frame 16 disposed with a predetermined space above the machine base frame 11, and the support Since the upper floor 32 is mounted on the base frame 16 via the elevating mechanism 20 and is configured in a staircase shape, the stepped upper floor 32 can be easily formed in a desired height step without an unreasonable posture. You will be able to work. When it is desired to work at a higher position, the height can be adjusted to a desired height by the elevating mechanism 20, and the work can be performed in a wide range of heights.

  Further, since the ladder 35 extends downward from the lower part of the upper floor 32, it is easy to get on and off, and even if the height is changed by the lifting mechanism 20, the ladder 35 is also lifted and lowered so that the legs cannot reach. There is no, and it is possible to ascend to the upper floor 32 without fail.

  Further, since either one of the front wheel 12 and the rear wheel 13 is a steering wheel and the other is a driving wheel, the driving wheel is rotated and traveled without getting off the upper floor 32 and moved. The direction of travel can be changed by operating the steering wheel, and the operability can be improved.

DESCRIPTION OF SYMBOLS 1 Work trolley 11 Machine base frame 12 Front wheel 13 Rear wheel 16 Support stand frame 20 Lifting mechanism 32 Upper floor 35 Ladder

Claims (3)

A machine base frame having a pair of left and right front wheels and a rear wheel, a support base frame disposed above the machine base frame with a predetermined space, and attached to the support base frame via a lifting mechanism in a stepped manner An upper floor configured, and a ladder extending downward from a lower portion of the upper floor ,
The upper floor and the ladder is movable carriage, characterized in Rukoto which having a plurality of steps equal vertical intervals. 2. The movable carriage according to claim 1 , wherein in a state where the upper floor is raised to the highest position, a distance between the step at the lowest stage of the ladder and the ground is equal to a vertical distance between the steps. .   2. The moving carriage according to claim 1, wherein one of the front wheel and the rear wheel is a steering wheel and the other is a driving wheel.

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