WO2018135480A1

WO2018135480A1 - Turnover apparatus

Info

Publication number: WO2018135480A1
Application number: PCT/JP2018/000992
Authority: WO
Inventors: 孝幸永木; 悦二田中
Original assignee: 株式会社イング
Priority date: 2017-01-17
Filing date: 2018-01-16
Publication date: 2018-07-26
Also published as: JP6725165B2; KR20190100332A; CN110177749B; CN110177749A; JPWO2018135480A1; KR102254605B1

Abstract

Provided is a turnover apparatus capable of easily turning over a panel-like building material without implementing intermediate position alignment. A set of two turnover apparatuses 1 is used. An elevating and lowering driving part 6 is provided on a carriage 8 provided with drive wheels 8a and driven wheels 8b. A holding part 2 that holds a panel-like building material having a through-hole formed in a longitudinal direction is attached to be rotationally driven around a rotating shaft 4a of a rotational driving part 4. The holding part 2 is composed of sliders 2a arranged with an adjustable spacing therebetween and forks 2b extending in parallel from the respective sliders 2a. The rotational driving part 4 is driven by the elevating and lowering driving part 6 so as to be elevated and lowered. The rotational driving part 4, the elevating and lowering driving part 6, and the drive wheels 8a of the carriage 8 are independently controlled by wireless control signals externally transmitted to a receiver 22.

Description

Reversing device

The present invention relates to a reversing device for a hollow plate-shaped building material such as a cement panel.

In recent years, cement panels called extrusion-molded cement boards are often used on the outer walls of office buildings and the like. This cement panel is lightweight and excellent in fire resistance, sound insulation and the like.

It is necessary to attach metal fittings for installation to the aggregate such as beams on the back of these cement panels. Since a plurality of cement panels are transported in a stacked state, the metal fittings are generally attached on site. Therefore, the work which reverses a cement panel in the field is needed.

FIG. 15 is a view showing a conventional forming panel sorting apparatus 101.

The sorting apparatus 101 in FIG. 15 can take out one panel at the top from a pile of molded panels stacked in a horizontal state at a construction site. Moreover, the taken-out panel can also be transferred to a trolley in a horizontal state or in a state where the panel is erected.

The sorting apparatus 101 has a movable frame 102 composed of a vertical frame 102a and a horizontal frame 102b. This frame 102 has a wheel 103 in the front and a free wheel 104 in the rear.

Also, an arm 107 having a clamping means 106 is attached to an elevating pedestal 105 disposed so as to be movable up and down along the vertical frame 102a so as to be rotatable upward. The clamp means 106 is constituted by a panel stopper 108 provided in the middle of the arm 107 and a clamp member 109 at the tip.

The arm 107 is further held in a state where the intermediate position is suspended by the wire 110, and can be inclined upward by winding the winch 111 provided at the upper end of the vertical frame 102a.

When the sorting apparatus 101 having such a configuration is used, the stacked uppermost panel can be clamped by the clamping means 106 and lifted, and the winch 111 can be rolled up and tilted in the lifted state. is there.

Therefore, the sorting apparatus 101 is useful for attaching a metal fitting to the back surface of the cement panel. Furthermore, the sorting apparatus 101 can be moved in a state where the cement panel is lifted, and can be transported to an attachment position.

Note that the sorting apparatus 101 having such a configuration is described in Patent Document 1.

JP 05-149005 A

In the sorting apparatus 101 as shown in FIG. 15, in order to lift with good balance, it is necessary to accurately align the cement panel to the intermediate position.

However, since cement panels of various lengths are often stacked and stacked, it is necessary to move the sorting device 101 each time in accordance with the middle position in the longitudinal direction. It becomes complicated.

Therefore, an object of the present invention is to provide a reversing device capable of easily reversing a plate-shaped building material without performing alignment to an intermediate position.

In order to achieve the above object, the reversing device of the present invention can hold and reverse a hollow plate-shaped building material in which a plurality of through holes are formed in parallel so as to be sandwiched in the extending direction of the through holes. A holding device in which at least two forks that can be inserted into the through hole are arranged in parallel, and a rotating shaft is arranged in parallel to the extending direction of the fork and above the fork, A rotary drive unit that rotationally drives the rotary drive unit, and a lift drive unit that drives the rotary drive unit to move up and down.

Further, the reversing device of the present invention is characterized in that, in addition to the above configuration, the fork has a tip end side formed to have a larger diameter over the entire circumference than the base end side.

In the reversing device of the present invention, in addition to the above-described configuration, at least one of the rotation driving unit and the lifting / lowering driving unit is driven by an electric motor having a characteristic that the rotation speed decreases as the load increases. It is characterized by.

In the reversing device of the present invention, in addition to the above configuration, each of the paired configurations is provided with receiving means for receiving control signals for the rotation control of the rotation drive unit and the elevation control of the elevation drive unit. The receiving means are set to the same channel.

Further, the reversing device of the present invention is characterized in that, in addition to the above configuration, the holding portion includes an expansion / contraction mechanism capable of extending / contracting the fork.

Further, in the reversing device according to the present invention, in addition to the above-described configuration, the elevating drive unit is arranged so that two channel steels face each other in the width direction, and each of the two end edges is rearward. It is provided with a support that is bent toward the front.

In the reversing device according to the present invention, in addition to the above-described configuration, the rotation driving unit is in contact with the inner wall of the support in the front-rear direction and a first roller that can roll up and down, and in the width direction. The sliding contact part which has the 2nd roller which can touch and can roll up and down is provided.

Further, the reversing device of the present invention is characterized in that, in addition to the above configuration, a reinforcing rib extending at least from the rear and the width direction to the outside is formed in an intermediate region in the vertical direction of the support column.

Further, the reversing device of the present invention is characterized in that, in addition to the above configuration, a reinforcing plate that is harder than the support column is interposed between the inner wall in the width direction of the support column and the second roller. To do.

As described above, according to the present invention, since the two forks of the holding unit are arranged in parallel below the rotation axis of the rotation driving unit, the first half rotation range (0 to 90 degrees) of the reversing operation is provided. The torque in the second range) is larger than the torque in the second half of the reversing operation (range of 90 to 180 degrees). Thereby, in the first half rotation region, in other words, in the initial stage of the reversing operation, it becomes easy to detect the state of synchronization deviation from the load difference between the devices that becomes noticeable.

Moreover, according to the present invention, in addition to the above effects, even if the fork is bent due to the load of the plate-shaped building material, if within the range of the difference in diameter between the distal end side and the proximal end side, Since the contact between the base end side and the plate-shaped building material can be prevented, the plate-shaped building material can be safely inserted at the position where it penetrates into the through hole by the length of the fork so that no load is applied to the open end where damage such as chipping is likely to occur. Can be supported.

Further, according to the present invention, in addition to the above-described effect, when the synchronization deviation occurs, the reversing device that precedes the operation has a relative load larger than that of the succeeding side, and therefore rotates according to the load difference. By utilizing the characteristics of the motor whose number is reduced, it is possible to alleviate the synchronization error with the trailing side.

Further, according to the present invention, in addition to the above effects, the pair of inverting devices are provided with receiving means set to the same channel, so that they can perform the same operation upon receiving a single control signal.

Further, according to the present invention, in addition to the above effect, after the reversing device main body is disposed close to the opening side of the through hole of the plate-shaped building material, the fork is extended or retracted to insert the fork into the through hole or Detachment can be performed easily.

Further, according to the present invention, in addition to the above effects, the edge of the channel steel is bent backward so that the strength in the front-rear direction is improved. In particular, since the portion bent and extended from the rear edge can be connected to the structure of the rear frame or the like, it is possible to prevent the column from tilting forward.

Further, according to the present invention, in addition to the above effect, the sliding contact portion having the first roller and the second roller is accommodated inside the support column, so that it can be configured compactly.

Further, according to the present invention, in addition to the above effects, the reinforcing ribs are formed so as to spread outward from at least the rear and the width direction, so that the struts are supported by pressure from the first and second rollers provided therein. Can be prevented from expanding and deforming.

Further, according to the present invention, in addition to the above-described effect, the reinforcing plate is interposed between the inner wall in the width direction of the support column and the second roller in contact with the width direction. Deformation can be prevented more reliably. Further, since the reinforcing plate is made of a harder material than the support column, it is possible to reduce the rolling friction of the second roller.

It is a perspective view which shows the use condition of the inversion apparatus which concerns on the 1st Embodiment of this invention. It is the whole perspective view which looked at one side of a pair of inversion devices of Drawing 1 from the front side. FIG. 3 is an overall perspective view of the reversing device of FIG. 2 as viewed from the back side. It is an enlarged view of the rotation drive part which shows rotation operation | movement of the inversion apparatus of FIG. It is an enlarged view of the rotation drive part which shows the space | interval adjustment operation | movement of the inversion apparatus of FIG. It is a front view of the inversion apparatus of FIG. It is an expanded sectional view which shows the screw mechanism of the raising / lowering drive part of the inversion apparatus of FIG. 2, (a) is the state in which a holding | maintenance part exists in a raise position, (b) is the state which mounted the cement panel, (c) is cement It is a figure which shows the state which the holding | maintenance part fell beyond the mounting position of the panel. It is a front view of the holding | maintenance part of the inversion apparatus of FIG. It is a whole perspective view of the front side of the inversion apparatus which concerns on the 2nd Embodiment of this invention. FIG. 10 is an overall perspective view of the back side of the reversing device of FIG. 9. 9A and 9B are right side views of the reversing device of FIG. 9, in which FIG. 9A is an overall view, and FIG. FIG. 12 is a schematic diagram showing a cross section cut along line AA in FIG. 11; The front view of the inversion apparatus of FIG. 9 is shown, (a) is a general view, (b) is the elements on larger scale around an arm. 9A and 9B are plan views of the reversing device of FIG. 9, in which FIG. 9A is an overall view and FIG. It is the figure which showed the sorting apparatus of the conventional molded panel.

Hereinafter, an inverting device according to an embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a perspective view showing a use state of the reversing device 1 according to the first embodiment of the present invention. As shown in FIG. 1, the reversing device 1 is used as a set of two. In FIG. 1, a pair of reversing devices 1 configured to be mirror-symmetric are shown in a state where they are arranged so as to be sandwiched from the longitudinal direction of a cement panel 100 that is a plate-shaped building material. A through hole 100a is formed in the cement panel 100 in the longitudinal direction, and each fork 2b of the reversing device 1 described later is inserted into the through hole 100a.

The cement panel 100 used for the outer wall of the building is attached with metal fittings on the back or both sides as a preliminary work for installation. And in order to attach this metal fitting, the cement panel 100 must be reversed one by one. Next, a schematic configuration of the reversing device 1 will be described with reference to FIGS.

FIG. 2 is an overall perspective view of the reversing device 1 of the present invention as viewed from the front side, and FIG. 3 is an overall perspective view as viewed from the back side. Note that the reversing device 1 of the present invention is a pair of devices that are used in pairs, but for convenience of explanation, only one configuration is shown as an example in FIGS. Specifically, a configuration is shown that is arranged on the left side in a forward direction (see FIG. 1) by a drive wheel 8a (FIG. 3) described later. The configuration arranged on the right side is at least mirror-symmetric with respect to the configuration shown in FIG. 2 using electrical components.

With reference to FIG. 2, the two constructions of the holding portion 2 for holding a hollow plate-shaped building material in which a through hole 100 a is formed, such as the cement panel 100 shown in the description of the use state described above. Forks 2b are arranged in parallel.

The holding unit 2 includes a slider 2a and a fork 2b, and is attached to a rotation driving unit 4 having a rotation shaft 4a disposed in parallel with the extending direction of the fork 2b. The rotation drive unit 4 includes a motor (not shown) in a rectangular parallelepiped case. As will be described later, the cement panel 100 held by these forks 2b is reversed by the rotational drive of the rotational drive unit 4. The rotation drive unit 4 is attached to the lift drive unit 6.

The holding unit 2, the rotation driving unit 4 and the lifting / lowering driving unit 6 are installed on a carriage 8, and the entire reversing device 1 is configured to be movable.

The elevating drive unit 6 is installed in parallel with the screw column 6a erected on the carriage 8, a motor 6b that is attached to the upper end of the screw column 6a and rotates the screw column 6a, and a screw column 6a. It is comprised from the provided support | pillar 6c. The rotational drive unit 4 is provided on the distal end side of an arm 6d extending forward substantially horizontally. On the proximal end side of the arm 6d, there is provided a nut that is screwed into the screw column 6d of the elevating drive unit 6 and constitutes a feed screw. The configuration of the feed screw will be described in detail later with reference to FIG. Thus, the rotation drive unit 4 can be controlled to move up and down by rotating the screw column 6a of the lift drive unit 6 with the motor 6b.

A driving wheel 8a (FIG. 3) is provided behind the carriage 8, and a driven wheel 8b is provided in the front. However, the configuration is not limited to this, and the drive wheels 8a may be provided in the front or intermediate position.

The driven wheels 8b are arranged so as to be aligned in the width direction in front of the carriage 8, and these traveling directions are orthogonal to the extending direction of the forks 2b. On the other hand, the drive wheel 8a is arranged in the width direction so as to be biased to the same side as the holding portion 2 is provided, and the travel steering handle 8d (FIG. 3) can be changed so that the travel direction can be changed. It is provided integrally. Further, a universal wheel 8c capable of traveling in all directions is provided slightly forward of the drive wheel 8a and on the opposite side of the drive wheel 8a in the width direction. If the traveling steering handle 8d is provided with a mechanism for locking in a specific direction, traveling is stabilized. For example, if a locking mechanism that locks in the straight direction is provided, the plate-shaped building material can be stably translated while being held.

Referring to FIG. 3, on the carriage 8, there are also a rotation drive unit 4, a lift drive unit 6 (FIG. 2), a battery 20 for driving the drive wheels 8a, and a control panel 21 for controlling them. It is placed. Further, the control panel 21 is provided with a receiver 22 that receives control signals for rotation control, elevation control, and drive travel control. Thereby, in addition to being able to control directly, as shown in FIG. 1, it is also possible to perform remote operation using the wireless transmitter 18.

Here, referring again to FIG. 1, in order to insert the fork 2 b into the through hole 100 a of the cement panel 100 as shown in FIG. 1, first, a reversing device is provided in the vicinity of each end of the cement panel 100 in the longitudinal direction. 1 is placed. At this time, the burden on the operator can be reduced by driving traveling by the drive wheels 8a. Specifically, the travel steering handle 8d of the drive wheel 8a is unlocked, and is driven to the end of the cement panel 100 by driving while turning the rudder, and the position of the fork 2b is adjusted to the position of the through hole 100a.

Referring back to FIG. 2, an expansion / contraction mechanism is employed for the fork 2b of the holding unit 2 of the reversing device 1 according to the present embodiment. In FIG. 2, the arrangement of the forks 2b in the contracted state is shown superimposed with dotted lines. In this way, when the fork 2b is contracted, the fork 2b is stretched after being aligned with the cement panel 100, and the fork 2b is extended after being aligned, so that the fork 2b can be inserted more easily than when the entire reversing device 1 is moved. It is.

Next, the rotation drive mechanism will be described with reference to FIGS.

FIG. 4 is an enlarged perspective view of the periphery of the rotation drive unit 4 of the reversing device 1 in FIG. 2, and shows a state in which the holding unit 2 including the fork 2b is rotating. A state in which the two forks 2b maintain the same height is indicated by a solid line, and a state in which the fork 2b is slightly rotated is indicated by being overlapped by a dotted line.

As shown in FIG. 4, the forks 2 b of the holding unit 2 are disposed at equal distances from the rotation shaft 4 a of the rotation driving unit 4. Accordingly, when the center position of the cement panel in the short direction is set to the rotation center, the reversing operation can be performed in a balanced manner.

FIG. 5 is an enlarged perspective view of the periphery of the rotation drive unit 4 of the reversing device 1 in the same manner as in FIG. 4, but here, an interval adjustment mechanism for adjusting the interval of the forks 2 b is shown. The state where the interval is widened is shown by overlapping with dotted lines.

The fork 2b of the holding unit 2 according to the present embodiment is attached to the slider 2a, and the slider 2a is arranged by a screw pair by a single screw shaft 2c. However, the screw threads of the screw shaft 2c to which the sliders 2a are screwed are cut so as to be opposite to each other. Thus, by rotating the input portion 2ca at the end of the screw shaft 2c, the sliders 2a can be separated from or approach each other around the position of the rotation shaft 4a, and the distance between the forks 2b can be adjusted. Therefore, since the interval between the forks 2b can be finely adjusted after center alignment with respect to the through hole 100a (see FIG. 1) of the cement panel 100, it is not necessary to move the entire reversing device 1 and work efficiency is improved. . In addition, when the fork 2b is inserted into the through hole 100a and the distance adjusting mechanism including the slider 2a and the screw shaft 2c is used to hold the inner wall of the through hole 100a in a press-contacting state in the expanding or narrowing direction, the reversing operation is performed. It is possible to stabilize without rattling.

In this embodiment, a knob is provided as the input portion 2ca at the end of the screw shaft 2c, and if an input portion that can be used manually is provided, the work efficiency is improved.

Next, the lifting mechanism will be described with reference to FIG.

A motor 6b is provided at the upper end of a column 6c that is erected in parallel with the screw column 6a. The screw column 6a is configured to transmit the rotation of the motor 6b by a bevel gear (not shown) provided at the upper end.

The above-mentioned rotation drive unit 4 is arranged in a sliding pair with respect to the column c, and a feed screw mechanism is configured with respect to the screw column 6a.

Thus, by controlling the rotation of the motor 6b, the rotation drive unit 4 can be driven up and down along the support column 6c.

Next, this feed screw mechanism will be described in detail with reference to FIG.

FIG. 7 shows a cross-sectional view of a feed screw mechanism configured for the screw column 6a. Here, for convenience of explanation, the detailed configuration is schematically shown without illustration. The position of the apex of the triangle indicated by the alternate long and short dash line in the figure represents the position of the upper surface of the mountain on which the plate-shaped building material such as a cement panel is placed. That is, the alternate long and short dash line indicates the lower limit position of the work. A nut 6e of a feed screw is screwed onto the screw column 6a. The nut 6e is slidably disposed so as to be slidable with respect to a locking portion 6f provided in the arm 6d (see FIG. 2) of the elevating drive unit 6. The pressure receiving plate 6g that receives a load applied via the locking portion 6f is in contact with the lower portion of the locking portion 6f. Since the flange that engages the pressure receiving plate 6g is formed on the nut 6e, the pressure receiving plate 6g and the locking portion 6f can be lifted through the nut 6e.

FIG. 7 (a) schematically shows a state in which the locking portion 6f is lifted from the height at which the work target member is placed. (B) has shown typically the state when the work object member is earth | grounded in the mounting position. (C) shows a state in which the nut 6e is lowered further below the state in which the work target member is grounded to the mounting position.

As shown in FIG. 7, the nut 6e is configured to have a shape that can slide within a length L with respect to the locking portion 6f. As a result, as shown in FIG. 7 (c) above, the length of the nuts 6e in the state in which the held cement panel 100 is in contact with the upper surface position of the pile on which the other cement panel 100 is placed is approximately longer. It is possible to descend by the length L. That is, it is possible to safely lower the fork 2b to a position where the load completely disappears without damaging a work object such as a plate-shaped building material.

As described above, in the present embodiment, since the operating range is provided by the length L further downward from the lower contact position with respect to the work target of the fork 2b, it is a rough operation by the visual observation of the worker. However, it is possible to perform the work safely without damaging the building material to be worked. Therefore, a configuration for performing control using a pressure sensor for detecting a load or a distance measuring sensor for measuring a distance from the mounting surface is unnecessary, and the cost and weight can be significantly reduced. In particular, in a work site, if an apparatus can be carried in using an elevator, it is very advantageous not only in work efficiency but also in terms of carry-in cost. Therefore, there are many merits in a configuration that can reduce the weight.

Next, the shape of the fork 2b will be described. FIG. 8 is a front view of the holding portion 2 as viewed in the direction in which the screw shaft 2c extends. FIG. 8A shows the positional relationship before and after the expansion and contraction of the fork 2b with respect to the slider 2a. The stretched state is represented by a solid line, and the contracted state (retracted state) is represented by a dotted line. The front end side of the fork 2b according to the present embodiment is formed so that the diameter of the fork 2b is larger than the base end side in the entire circumference. This step is used as a stopper that defines the rearward limit when retreating.

FIG. 8 (b) shows a state in which a load is applied from the cement panel 100 to the fork 2b in the extended state. When a large force is applied to the fork 2b, it may be slightly bent downward. However, as described above, a step is formed at the tip of the fork 2b so as to be slightly larger. Thereby, even if it is a case where bending arises, if the amount of bending is slight, the cement panel 100 will be supported only by the front end side of the fork 2b, without contacting the cement panel 100 at the base end part side. Therefore, the structure is such that a load to the end portion where damage such as chipping is likely to occur is difficult to occur. Even if the base end side of the fork 2b and the cement panel 100 are bent to the extent that they are brought into contact with each other, most of the load can be received at the front end side of the fork 2b. It is hard to occur.

Further, even when the contact position with the cement panel 100 is shifted from the side surface of the fork 2b to the bottom surface side by the reversing operation, the step on the tip side is formed over the entire circumference. The end of 100 is protected.

The reversing device 1 described above is configured to be battery-driven independently. Moreover, the receiver 22 is provided separately. The reversing device 1 according to the present embodiment does not include a complicated feedback control unit that detects each other's operation state and restricts its own movement. Instead, each receiver 22 is set to the same channel, the same control signal is transmitted from one wireless transmitter 18, and the operation is performed at the same time, thereby enabling a synchronized and integrated operation. Yes. The same channel here means the same frequency or frequency band used in wireless communication, or the same address when communication is performed in packets.

Therefore, a drive circuit that constitutes a complicated servo mechanism and communication means between individuals are unnecessary, and the weight and cost can be greatly reduced.

Furthermore, a characteristic configuration is that the electric motor (

motors

4b, 6b) used for rotational drive and lift drive is not provided with a control mechanism for keeping the rotational speed constant. Therefore, the characteristic that the rotational speed decreases as the load increases is positively used in at least one of the motor 4b of the rotation drive unit 4 and the motor 6b of the elevation drive unit 6. Next, this mechanism will be described.

As shown in FIG. 2, the fork 2b of the holding unit 2 of the reversing device 1 according to the present embodiment is provided below the rotation shaft 4a of the rotation drive unit 4. For this reason, it is possible to lift the cement panel 100 at a lower position without greatly lowering the arm 6d of the lifting drive unit 6. When the cement panel 100 lifted in this way is inverted, the two forks 2b are both separated downward from the rotary shaft 4a, so that the rotational torque gradually increases in the rotation range of 0 to 90 degrees. Maximum at degrees.

If the motor 4b of the rotational drive unit 4 has a characteristic that the rotational speed decreases due to an increase in load, the rotational speed gradually decreases as the rotational torque increases in the rotational range of 0 to 90 degrees. To do.

Here, in the initial state, when there is a shift in the phase of each reversing device 1 or when there is a voltage difference due to a difference in the amount of charge of the battery 20, the rotational speed of the motor 4b is completely matched. However, there is a possibility that a slight synchronization shift occurs. In this case, the lifting force in the rotation range of 0 to 90 degrees is biased, and the load on the preceding fork 2b increases. However, since the rotational speed greatly decreases with an increase in load, the rotational speed is significantly decreased on the preceding side. That is, the inverting device 1 according to the present embodiment can be operated to automatically tune the subsequent side by suppressing the operation with the larger load without using a complicated feedback control circuit. It becomes.

The above action becomes more prominent as the fork 2b is separated from the rotating shaft 4a. Therefore, if the distance between the two is set in consideration of the relationship between the driving ability of the

motors

4b and 6b and the weight of the cement panel 100 to be handled, the synchronization shift is greatly reduced at the initial stage of the reversing operation of 0 to 90 degrees. Subsequent inversion operations can be stabilized.

The same applies to the elevating drive unit 6. On the side where the lifting operation is performed in advance, a larger load than that on the subsequent side is applied, and accordingly, the decrease in the rotational speed is increased. Accordingly, the movement on the leading side is suppressed, and synchronization is automatically achieved in the ascending operation.

As described above, according to the reversing device 1 of the present invention, with respect to slight synchronization deviation caused by the visual adjustment of the operator, using the characteristic that the rotational speed changes with respect to the load of the

electric motors

4b and 6b, Since it works so as to be automatically relieved, it is possible to prevent the cement panel 100 from being damaged and operate safely without using a complicated servomechanism.

This makes it possible to reduce the size of the device and to easily move it using an elevator for material transportation on site.

Also, even if the initial settings are made relatively rough, the operation is performed so that the devices are automatically synchronized, so that skill is not required for the work.

(Second Embodiment)
FIG. 9 is an overall perspective view of the front side of the reversing device 51 according to the second embodiment of the present invention. FIG. 10 is an overall perspective view of the reverse side of the reversing device 51. A schematic configuration of the reversing device 51 will be described with reference to FIGS. 9 and 10 as appropriate.

Similarly to the reversing device 1 according to the first embodiment, the reversing devices 51 shown in FIGS. 9 and 10 are also used in pairs. Hereinafter, the inside shown in the figure is the inside in the work space constituted by a set of two reversing devices 51. In the case of describing the inner side (center side) in a single reversing device 51, "Inside, we will distinguish it. In addition, the side on which the plate-shaped building material that is the work target is held or reversed is defined as the front side, and the side on which drive wheels and the traveling steering handle described below are provided is defined as the rear side. For convenience of explanation, only one of the paired configurations is shown as an example, as in the first embodiment. Specifically, the structure arrange | positioned at the left side toward the front is shown. In the configuration arranged on the right side, at least a portion excluding electrical components is configured to be mirror-symmetric with respect to the configuration shown in FIGS. 9 and 10.

The holding part 52 that directly lifts the plate-shaped building material such as a cement panel has almost the same configuration as the reversing device 1 of the first embodiment. Specifically, the holding portion 52 includes two forks 52b extending in parallel toward the inside, and a slider 52a for adjusting the distance between them. The two sliders 52a are respectively arranged in a feed screw structure with respect to the portions of the screw shaft 52c that are cut in reverse threads. Thereby, two sliders 52a can be simultaneously slid by rotating any one input part 52ca provided in the edge part of the screw shaft 52c.

Further, in the holding portion 52, four guide rollers 52d are provided on the side where the fork 52b is provided in the width direction of the reversing device 51. These guide rollers 52d are not provided in the reversing device 1 according to the first embodiment. The fork 52b can be retracted outward as in the case of the reversing device 1 of FIG. In this retracted state, when the reversing device 51 is brought closer while pressing against the end of the cement panel using the guide roller 52d as a guide, the fork 52b can be positioned safely and easily without scraping the end of the cement panel. Is possible.

Such a holding unit 52 is attached to the rotation driving unit 54. The fork 52 b of the holding unit 52 is disposed in parallel with the rotation shaft 54 a of the rotation driving unit 54. The fork 52b is provided at a position lower than the rotation shaft 54a. The rotation drive unit 54 includes a motor 54b in a rectangular parallelepiped case. The cement panels held by these forks 52b are reversed by the rotational drive of the rotational drive unit 54, similarly to the reversing device 1 of FIG. The rotation drive unit 54 is attached to the lift drive unit 56.

The holding unit 52, the rotation driving unit 54, and the lifting / lowering driving unit 56 are installed on a carriage 58, and are similar to the reversing device 1 of FIG. 1 in that the entire reversing device 51 is configured to be movable. .

The elevating drive unit 56 surrounds the screw column 56a, a screw column 56a erected on the carriage 58, a motor 56b as a driving means for rotating the screw column 56a, and a screw 56a. It is comprised from the support | pillar 56c erected. The rotation drive unit 54 is provided on the tip side of an arm 56d that extends substantially horizontally forward. On the base end side of the arm 56d, a nut that is screwed into the screw column 56a of the elevating drive unit 56 and constitutes a feed screw is provided. As described above, the rotation drive unit 54 can be controlled to move up and down by rotating the screw column 56a of the lift drive unit 56 with the motor 56b.

Next, the cart 58 will be described. Similarly to the carriage 8 of the reversing device 1 in FIG. 1, the carriage 58 is also provided with driven wheels 58 b arranged in the width direction. However, in the cart 58, the inner side of the two legs 58c to which the driven wheel 58b is attached is strengthened more than the outer side. Thus, the structure in which the leg part 58c of the trolley | bogie 58 is asymmetric is different from the inversion apparatus 1 of FIG. Specifically, the inner leg portion 58 is reinforced by a bracing portion 58e extending from the rear outer side to the front inner side. At the rear, only one drive wheel 58a is provided at the approximate center in the width direction. The direction of the drive wheel 58a can be changed by a traveling steering handle 58d extending obliquely upward and rearward.

Behind the carriage 58 are also mounted a battery 70 for driving the rotational drive unit 54, the lift drive unit 56 and the drive wheels 58a, and a control panel 71 for controlling them (see FIG. 10). . The control panel 71 is provided with receiving means for receiving control signals for rotation control, elevation control, and drive travel control. Thereby, in addition to being able to control directly, it is also possible to perform remote operation by wireless transmission similarly to the reversing device 1 of FIG.

The rotation drive mechanism has basically the same configuration as the reversing device 1 in FIG.

Next, the lifting mechanism will be described with reference to FIGS. 9 and 10.

As described above, the motor 56b is provided at the upper end of the support column 56c provided in parallel with the screw column 56a. The screw column 56a is configured to transmit the rotation of the motor 56b by a bevel gear (not shown) provided at the upper end. In such a configuration, by controlling the rotation of the motor 56b, the rotation drive unit 54 can be driven up and down along the support column 56c. Such a basic mechanism is the same as that of the reversing device 1 of FIG. However, in the configuration according to the present embodiment, the structure of the support column 56c that supports the load is greatly different. The support column 6c of the reversing device 1 in FIG. 1 is composed of two prismatic members standing on both sides of the screw column 56a. On the other hand, the support | pillar 56c of the inversion apparatus 51 is comprised combining channel steel.

In the first embodiment, the feed screw mechanism described with reference to FIG. 7 is also provided with the reversing device 52 according to the present embodiment.

Next, the structure of such a support 56c and its periphery will be described with reference to FIGS.

FIG. 11 is a left side view of the reversing device 51 of FIG. 9, FIG. 11 (a) is an overall view, and FIG. 11 (b) is a partially enlarged view of the arm 56d proximal end side.

First, refer to FIG. When the cement panel is lifted by the fork 52b of the holding portion 52, a force F that tilts the front of the arm 56d downward acts as shown by the downward arrow. In order to reduce an unnecessary load other than the axial direction generated in the screw column 56a (see FIG. 9) by such a force F, a sliding contact portion 57 that slides along the inner wall of the column 56c is provided. The sliding contact portion 57 is represented by a dotted line. In the present embodiment, two sets of sliding contact portions 57 are provided vertically along the support column 56c.

Here, in order to help the understanding of the positional relationship between the sliding contact portion 57 and the support post 56c, reference is made to FIG. 12 showing a cross section taken along the line AA of FIG.

12 mainly focuses on the structure of the column 56c and the sliding contact portion 57, and for convenience of explanation, illustration of the internal structure of the control panel 71 and other peripheral structures is omitted and schematically shown. Actually, the wiring of the drive system such as the rotation drive unit 54 is accommodated inside the back cover 59, but since it is not necessary for the description of the skeleton structure, these wirings are not shown. .

As shown in FIG. 12, the support column 56c is composed of two channel steels 60 arranged so that the groove sides face each other. Each of the end edges of the channel steel 60 is bent rearward. Specifically, the end edge of the front plate portion 60a of the channel steel 60 is formed as a bent portion 60d, and the end edge of the rear plate portion 60b is formed as a bent portion 60e.

The sliding contact portion 57 includes a front-rear direction roller 57a (first roller) disposed in contact with the front plate portion 60a or the rear plate portion 60b of the channel steel 60, and a width direction roller 57b disposed in contact with the side plate portion 60c. (Second roller). In addition, about the width direction, the reinforcement board 61 for improving the side intensity | strength of the channel steel 60 is interposed between the side-plate part 60c and the width direction roller 57b. It is desirable to use a member having higher hardness than the channel steel 60 for the reinforcing plate 61. For example, the carbon steel reinforcing plate 61 is smaller than the front-rear direction roller 57a, so that sufficient strength can be obtained even with respect to the width direction roller 57b where pressure tends to concentrate.

Generally, since channel steel is open on one side, it is inferior in strength compared to pipes and squares. In the reversing device 51 according to the present embodiment, since the groove side of the channel steel 60 is used in the width direction, it is necessary to reinforce the strength in the front-rear direction. On the other hand, the channel steel 60 according to the present embodiment is formed with the

bent portions

60d and 60e as described above, so that sufficient strength can be obtained in the front-rear direction.

Further, by utilizing the fact that the channel steel 60 is open to one side, the sliding contact portion 57 for stabilizing the lifting mechanism can be arranged in the support column 56c, and therefore, an advantage that it can be designed very compactly. There is.

Here, returning to FIG. 11 again, reference is made to FIG. 11B in which the base end side of the arm 56d provided with the sliding contact portion 57 is enlarged.

In the reversing device 51 according to the present embodiment, the front-rear direction roller 57a of the sliding contact portion 57 disposed on the upper side is disposed so as to contact the front plate portion 60a of the channel steel 60, and the rear and the rear plate portion 60b. There is a slight gap between them. On the other hand, the longitudinal roller 57a of the sliding contact portion 57 disposed on the lower side is disposed so as to contact the rear plate portion 60b of the channel steel 60, and a slight gap is formed between the front and the front plate portion 60a. Is provided. As a result, even if a downward force F as shown in FIG. 11A acts on the arm 56d, a load can be stably received by the support column 56c, and the rotational load generated on the screw column 56a can be reduced. be able to.

Next, the relationship between the column 56c and the sliding contact portion 57 will be described by changing the viewpoint in the front-rear direction. FIG. 13 is a front view of the reversing device 51 of FIG. 9, FIG. 13 (a) is an overall view, and FIG. 13 (b) is an enlarged view around the arm 56d.

Here, the cement panel 100 that is the work target is represented by a dotted line. FIG. 13 (a) shows a state where one sheet is lifted from the top of a mountain on which a plurality of cement panels 100 are placed. Since the cement panel 100 used for the outer wall of a building has a weight of several hundred kilos, even if it is lifted by a pair, a considerable load is applied to one side.

Reference is made to FIG. 13B in which the periphery of the arm 56d is enlarged. The sliding contact portion 57 is represented by a dotted line. As described above, the sliding contact portion 57 is provided with the width direction roller 57b that comes into contact with the reinforcing plate 61 filled in the inner wall of the side plate portion 60c of the column 56c. Thereby, when a load is applied to the fork 52b of the holding portion 52 provided inward, the width direction roller 57b of the upper sliding contact portion 57 is pressed against the reinforcing plate 61 on the width direction inner side with respect to the support column 56c. . On the other hand, the width direction roller 57 b of the lower sliding contact portion 57 is pressed against the outer reinforcing plate 61. Thus, the reaction force can be stably received by the support post 56c also in the width direction.

Next, the configuration around the column 56c will be described in plan view. 14 is a plan view of the reversing device 51 of FIG. 9, where FIG. 14 (a) is an overall view, and FIG. 14 (b) is a partially enlarged view of the base end side of the arm 56d. Similar to FIG. 13, the cement panel 100 is represented by a dotted line.

Referring to FIG. 14A, it can be seen that a plate-like outer reinforcing rib 62 is formed around the support column 56c. In FIG. 14B, for convenience, the outer reinforcing rib 62 is hatched for easy identification. The outer reinforcing rib 62 is formed so as to connect the three directions except the front to the support column 56c. Thereby, even when a great pressure is applied to the inner wall of the column 56c from the front-rear direction roller 57a and the width direction roller 57b of the sliding contact portion 57, it is possible to prevent deformation due to expansion of the column 56c.

In addition, since the channel steels 60 arranged in a pair of left and right are integrally formed by the outer reinforcing ribs 62, the rigidity of the entire column 56c is improved.

The outer reinforcing rib 62 may be provided at least in an intermediate region of the support column 56c through which the sliding contact portion 57 passes. In the present embodiment, as shown in FIG. 13, they are arranged using a small space between the battery 70 and the control panel 71.

As described above, in the reversing device 51 according to the present embodiment, the support column 56c is provided compactly in the width direction of the device while ensuring sufficient strength. Accordingly, as can be seen from FIGS. 13 and 14, the space on the inner side of the column 56c, that is, on the side where the fork 52b is provided can be widely used. Accordingly, even when the cement panel 100 is moved up with the cement panel 100 lifted up, it does not interfere with the remaining piles of the cement panel 100, so that the degree of freedom in work is increased.

At the same time, the space on the side where the fork 52b is not provided can be widely used by designing the support column 56c compactly. That is, in the width direction and the front-rear direction, the degree of freedom in design is high when a heavy object (for example, the battery 70 or the control panel 71) is arranged as a counterweight on the side opposite to the holding portion 52 via the support 56c. Thereby, since the balance of the whole centering on the support | pillar 56c becomes favorable, the inversion apparatus 51 is stabilized.

Further, since the end edge of the rear plate portion 60b is bent rearward as the bent portion 60e, the channel steel 60 constituting the column 56c has a rear structure (for example, a frame configured integrally with the carriage 58, etc. ). If the rear structure is connected in this way, the support 56c can be prevented from being tilted forward and stabilized.

The configuration described above is one embodiment of the present invention and includes the following modifications.

In the first and second embodiments described above, a configuration in which two

forks

2b and 52b are provided in the holding

portions

2 and 52 is shown as an example. However, the configuration is not limited to this, and three or more configurations are also included. . However, in the case of three or more, the same effect can be obtained if the two forks arranged on both outer sides satisfy the same conditions as the

forks

2b and 52b described above.

In the first and second embodiments, the configuration using the

batteries

20 and 70 as a power source is taken as an example, but a configuration using a commercial power source may be used.

In the first embodiment, at least one of the rotation driving unit 4 and the lifting / lowering driving unit 6 is an electric motor (

motors

4b and 6b) having a characteristic that the rotation speed decreases as the load increases. This is shown as an example, but specifically, a DC motor that does not include a constant-rotation feedback control circuit is desirable. In particular, a DC brushless motor is suitable in the case where a drive circuit that prevents complete lock and prevents excessive current from flowing in a stopped state is provided.

Furthermore, electric motors whose rotational speed decreases with increasing load include those equipped with electromagnetic clutches. Specifically, a configuration in which a powder clutch, a hysteresis clutch or the like is interposed in the power transmission path for power absorption or torque limiter can be used. When an electric motor having such a configuration is used, an appropriate slip occurs in a powder clutch or the like even when the movement on the work target side (clutch output side) stops completely due to an overload. Therefore, the electric mechanism side (clutch input side) can maintain a constant rotational speed. Therefore, since no overcurrent is generated for maintaining the rotation speed, the burden on the battery can be reduced. In addition, even if the stop side is activated when the two reversing devices 1 are out of synchronization as described above and are synchronized again, the configuration of the powder clutch or the like acts as a buffer mechanism, which is unnecessary. It is possible to drive safely without causing recoil. Such a configuration can be applied as it is to the reversing device 51 according to the second embodiment.

In the above-described first embodiment, the configuration in which the drive wheel 8a is one rear wheel is shown as an example. However, when there is a margin in power, a plurality of drive wheels may be provided. Furthermore, it is not necessary to dispose one side in the width direction.

Further, in the above-described second embodiment, the sliding contact portion 57 is shown as an example of a configuration in which the front-rear direction roller 57a and the width direction roller 57b are combined. However, as long as it can receive the load applied from the arm 56d of the lifting drive unit 56 and does not hinder the lifting movement, the sliding contact member other than the roller may be replaced. For example, a wear-resistant polymer material may be used. Further, a combination of such a polymer material and a roller may be used.

The reversing device of the present invention can be designed compactly because it does not involve a precise tuning mechanism. Thereby, since the elevator for materials etc. can be utilized, it is useful in the construction site of a small space. Further, the present invention is not limited to plate-like building materials such as cement panels, and can be used as a device for safely elevating or reversing long building materials.

1 Reversing device 2 Holding unit 2a Slider (spacing adjustment mechanism)
2b Fork 2c Screw shaft (Spacing adjustment mechanism)
2ca Input unit 4 Rotation drive unit 4a Rotating shaft 4b Motor 6 Lifting drive unit 6a Screw pillar (feed screw mechanism)
6b Motor 6c Post 6d Arm 6e Nut (Feed screw mechanism)
6f Locking portion 6g Pressure receiving plate 8 Bogie 8a Drive wheel 8b Driven wheel 8c Swivel wheel 8d Travel steering handle 18 Wireless transmitter (transmitting means)
20 Battery 21 Control panel 22 Receiver (Receiving means)
51 Reversing Device 52 Holding Unit 52a Slider (Spacing Adjustment Mechanism)
52b Fork 52c Screw shaft (Spacing adjustment mechanism)

52ca Input section

52d Guide roller 54 Rotation drive section 54a Rotating shaft 54b Motor 56 Lifting drive section 56a Screw pillar (feed screw mechanism)
56b Motor 56c Post 56d Arm 57 Sliding part 57a Front-rear direction roller (first roller)
57b Width direction roller (second roller)
58 dolly 58a driving wheel 58b driven wheel 58c leg 58d traveling steering handle 58e bracing part 59 back cover 60 channel steel 60a front plate part 60b rear plate part 60c

side plate part

60d, 60e bent part 61 reinforcing plate 62 outer reinforcing rib 70 battery 71 Control panel 100 Cement panel (plate-shaped building material)
100a Through-hole 101 Sorting device 102 Frame 102a Vertical frame 102b Horizontal frame 103 Wheel 104 Universal wheel 105 Elevating base 106 Clamping means 107 Arm 108 Panel stopper 109 Clamp member 110 Wire 111 Winch F Force L Length

Claims

A pair of reversing devices capable of holding and reversing a hollow plate-shaped building material in which a plurality of through holes are formed in parallel so as to be sandwiched in the extending direction of the through holes,
A holding portion in which at least two forks that can be inserted into the through hole are arranged in parallel;
A rotation driving unit that rotates parallel to the direction in which the fork extends and above the fork, and rotates the holding unit;
An elevating drive unit for elevating and driving the rotational drive unit;
A reversing device comprising:
2. The reversing device according to claim 1, wherein the tip side of the fork is formed to have a larger diameter over the entire circumference than the base end side.
3. The reversing device according to claim 1, wherein at least one of the rotation driving unit and the lifting / lowering driving unit is driven by an electric motor having a characteristic that a rotation speed decreases with an increase in load.
Each of the paired configurations is provided with receiving means for receiving control signals for rotation control of the rotation drive unit and elevation control of the elevation drive unit,
The reversing device according to any one of claims 1 to 3, wherein each of the receiving units is set to the same channel.
The reversing device according to any one of claims 1 to 4, wherein the holding portion includes an expansion / contraction mechanism capable of extending / contracting the fork.
The elevating drive unit is provided with a support column in which two channel steels are arranged so that their groove sides face each other in the width direction, and each two end edges are bent toward the rear. The reversing device according to claim 1.
The rotation driving unit includes a first roller that can contact the inner wall of the support in the front-rear direction and roll up and down, and a second roller that abuts in the width direction and can roll up and down. The reversing device according to claim 6, further comprising a contact portion.
The reversing device according to claim 7, wherein a reinforcing rib extending at least rearward and outward in the width direction is formed in an intermediate region in the vertical direction of the support column.
The reversing device according to claim 7 or 8, wherein a reinforcing plate harder than the support is interposed between an inner wall in the width direction of the support and the second roller.