JP2017012416A - Flat body with fall prevention device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flat body with a fall prevention device which does not hinder other works and travel even when it is attached to a gate board in a normal time, in which an erection work of a pole which is used when a main rope is stretched, is facilitated, and after use, the pole is fallen and whole body of the flat body does not bulk.SOLUTION: A fall prevention device 9 formed of a main rope 10 and a pair of main rope support tools 11, 11 is attached to an upper end of a side part gate board 2, and a crane 7 is installed so as to revolve freely between a loading space 1 and a cab 6, and outriggers 8, 8 are disposed on both sides of the crane 7 in a flat body with a fall prevention device.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a truck (hereinafter referred to as a flat body) provided with tilt plates on the left and right sides and the rear side thereof, and in particular, a fall that can prevent an accident of falling from a carrier of an operator who loads and unloads a load. The present invention relates to a flat body with a prevention device.

  In a flat body, an operator often goes up to the loading platform in order to load and unload a load, but the work on the loading platform may cause a fall accident. Therefore, conventionally, it has been performed to prevent the operator from falling, such as by hanging a master rope between a pair of struts erected near the loading platform and hooking a safety belt rope on the master rope. . However, in such a method, it is necessary to secure a space for loading the columns separately from the load on the loading platform or the like. Moreover, since it is necessary to install and remove struts every time the cargo is loaded and unloaded, there is a problem that the work is complicated and inefficient.

In order to solve such a problem, for example, in Patent Document 1, it is installed with the name of “falling prevention tool” for the purpose of preventing a worker from falling when working on a truck bed. A device related device is disclosed.
The idea disclosed in Patent Document 1 is based on both horizontal ends of a frame-equipped sheet that is configured to be pivotable in the vertical direction by a pivot shaft provided on the upper end side of the tilt that forms the side wall of the loading platform. A pair of wire fixing members is provided on the wire, and a wire is stretched between the pair of wire fixing members.
According to such a structure, when an operator loads or unloads a load on a truck bed, a fall accident can be prevented by placing the hook of the safety belt rope attached to the wire on the wire. Moreover, since it is not necessary to install a fall prevention tool or to withdraw each time work is performed, it is possible to prevent a reduction in work efficiency.

Next, Patent Document 2 discloses an invention related to an apparatus that is used in a state of being fixed to a lift of a loading platform in order to prevent an operator from falling from the loading platform such as a truck under the name of “fall prevention device”. ing.
The invention disclosed in Patent Document 2 includes a column that is erected on the outer side surface of the pallet of the cargo bed, and first and second fixing devices for fixing the column to the upper and lower ends of the pallet. In addition, the column is characterized in that the outer side surface of the column is pressed and fixed to the tilt side by at least one of the first and second fixing devices.
According to such a structure, even if the position of the protrusion used when fixing the column is different depending on the type of the truck, it can be easily handled by adjusting the position of the fixing device with respect to the column. be able to.

Further, Patent Document 3 discloses a column having a name "track supporter for truck and fall prevention device for truck", which supports the main rope before and after the loading platform for the purpose of preventing a fall accident during truck loading operation. There has been disclosed a device relating to an instrument used when standing up.
The invention disclosed in Patent Document 3 includes a pipe body that holds an inserted support column, and an upper hook portion that is provided on the upper side or upper end of the pipe body and has a hook that is hooked on the upper edge of a track cage. A lower ring portion provided on the lower side or lower end of the side of the pipe body and having a ring for hanging on a cargo bed hook provided at a lower portion of the truck bed, and the ring of the lower ring portion is an upper hook with respect to the pipe body It is characterized in that it is formed so as to be able to be fixed at a position on the loading platform hook while moving forward and backward obliquely downward on the side where the section is disposed.
According to such a structure, in the case of a truck provided with a loading platform hook, the pipe body that fits and holds the column can be fixed to the loading platform of the truck without processing the track.

Utility Model Registration No. 3177898 JP2013-244281A Utility Model Registration No. 3188609

  However, in the device disclosed in Patent Document 1 which is the above-described prior art, when performing other work that does not use a wire, the framed sheet and the wire fixing member may be in the way and hinder the work. is there.

  Moreover, in the invention disclosed in Patent Document 2, there is a problem that it takes time to install the column. In addition, the structure is not capable of always installing the support on the loading platform, and it is necessary to remove the support every time the work is completed.

  Furthermore, in the device disclosed in Patent Document 3, since the support is in the way when traveling or other work is performed, installation and removal of the support must be performed each time work such as loading and unloading of luggage is performed. There is a problem that the work is complicated and the efficiency is low.

  The present invention has been made in response to such a conventional situation, and even if it is always attached to the tilt plate, it does not hinder other work and traveling, and is used when the master rope is stretched. It is an object of the present invention to provide a flat body provided with a fall prevention device that is easy to stand up and that can be tilted after use to make it less bulky.

In order to achieve the above object, a flat body with a fall prevention device according to the first invention comprises a fall prevention device comprising a master rope and a pair of master rope supports, and the master rope support is installed so as to surround the loading platform. A long fixing member fixed to the upper end surface of the tilted plate parallel to the longitudinal direction, and a long member whose base end is pivotally connected to the fixing member and the master rope is hooked near the distal end. And a support member that is detachably attached to at least one of the support column and the fixing member and supports the support column perpendicular to the fixing member. The support column is within a vertical plane. The fixing member is installed on the tilt plate so as to be rotatable. The state of “supporting vertically” includes the state of “supporting substantially vertically”.
In the flat body with the fall prevention device having such a structure, the column is rotated until it becomes perpendicular to the loading platform and is supported by the support member, so that the parent rope can be attached. . In addition, when the master rope is removed from the support pillar and the end of the support member is removed from the support pillar or the fixing member, the support rope is folded small when the support pillar is rotated in a direction in which the angle with the fixing member is reduced. As a whole, it has the effect of becoming unbulky.

According to a second aspect of the present invention, in the first aspect, the fixing member is a grooved steel having a “U” cross section, and the column is rotated to a state parallel to the longitudinal direction of the fixing member. It is characterized in that it can be stored inside. It should be noted that the state that “the cross section has a“ U ”shape” includes the state that “the cross section has a substantially“ U ”shape”.
In the flat body with a fall prevention device having such a structure, in addition to the action of the first invention, when the support is not used, when the support is stored in the fixing member, other work is performed. The column has an effect that the column does not get in the way and that the column is protected by the fixing member.

According to a third invention, in the second invention, the fixing member is fixedly bonded to the upper end surface of the tilt plate so that the groove opens to the loading platform side in a state where the tilt plate is arranged in parallel with the vertical direction. It is characterized by having been done.
In a flat body with a fall prevention device having such a structure, when the support plate is rotated 90 degrees while the tilt plate is horizontal, the support column is perpendicular to the loading platform, and when the tilt plate is parallel to the vertical direction, the support column is Only has a function of being able to rotate horizontally toward the inside of the loading platform and not rotating in the other direction.

According to a fourth invention, in the third invention, in a state where the support column is housed in the groove of the fixing member and the tilt plate is disposed in parallel with the vertical direction, the support plate is moved downward along with the deformation and movement of the support column by its own weight. The locking tool is installed on the fixing member so that it can be locked to the displaced tip.
In the flat body with the fall prevention device having such a structure, in addition to the action of the third invention, when the tilt plate is in a state parallel to the vertical direction, the locking tool is engaged with the tip of the column. It has the effect | action which stops and prevents the rotation. Note that, in a mechanical product such as a parent rope support tool constituting the present invention, in general, the clearance between the inner surface of the groove of the fixing member and the outer surface of the support column is a precision machine product so that the support column can be smoothly rotated. It is set larger than in the case of. Therefore, in the state where the tilt plate is horizontal, the tip of the support column can move within a predetermined range in the width direction within the groove of the fixing member. Therefore, if the position of the tip with respect to the width direction of the groove is adjusted by holding the tip of the support by hand so that it is not locked with the locking tool, the support can be rotated in the vertical plane. It becomes.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the support column is formed of channel steel having a U-shaped cross section so that the support member can be accommodated therein, and the length of the fixing member In the state parallel to the direction, the grooves are installed so as to face each other. It should be noted that the state that “the cross section has a“ U ”shape” includes the state that “the cross section has a substantially“ U ”shape”.
In the flat body with the fall prevention device having such a structure, in addition to having the function of any one of the first to fourth inventions, if the support member is housed in the groove of the support column, It has the effect | action that a tool will be in the state which becomes much less bulky. In addition, when the support column is housed in the groove of the fixing member, the support column and the fixing member cover each other, so that dust or the like hardly collects in each groove.

In a sixth aspect based on the fifth aspect, the support member can be stored in the groove of the column in a state parallel to the longitudinal direction of the column, and its base end is rotatably connected to the column, A protruding portion is provided at the tip, and a locking portion is provided on the fixing member so as to be locked to the protruding portion in a state where the support column and the fixing member are perpendicular to each other.
In the flat body with the fall prevention device having such a structure, in addition to the action of the fifth invention, the locking state of the protruding portion with respect to the locking portion is canceled, and the support member is rotated so as to be parallel to the support column. With this simple operation, the column can be turned.

  As described above, according to the first invention, since the column is always attached to the loading platform, it is necessary to install the column again when working on the loading platform or to remove the column after the operation. In addition to this, since the operation of the master rope support is easy, the work of installing the master rope on the loading platform at the time of loading and unloading of the luggage can be performed efficiently in a short time. Further, when the fall prevention device is not used, it can be folded in a small size so that it does not become bulky. Therefore, it does not become an obstacle during traveling, and it is not necessary to provide a separate storage space, which is economical.

  According to the second invention, in addition to the effect of the first invention, since the support column does not interfere with other work, the work can be efficiently performed. Moreover, there exists an effect that a parent rope support tool does not break down easily.

  According to the third invention, in addition to the effect of the second invention, there is an effect that the main rope support can be used in a state where the tilt plate is tilted and the loading platform is most widened. Also, in the state where the tilt plate is parallel to the vertical direction as during traveling, even if the lock mechanism that prevents the support column from rotating is removed, the support column may rotate toward the outside of the loading platform. There is no safety.

  In the fourth aspect of the invention, as described above, the locking tool functions as a lock mechanism during traveling in which the tilt plate is in a state parallel to the vertical direction. Therefore, according to this invention, in addition to the effect of 3rd invention, there exists an effect that the safety | security at the time of driving | running | working can be ensured.

  According to the fifth invention, in addition to the effects of the first to fourth inventions, when the master rope support is not used, there is no possibility that the strut interferes with other work. The effect of improving the efficiency is further exhibited. Moreover, since dust or the like hardly collects inside the fixing member or the groove of the support column, the frequency of cleaning the master rope support can be reduced.

  According to 6th invention, compared with the structure where the edge part of the supporting member was attached to the support | pillar so that attachment or detachment was possible, the operation | work which falls a support | pillar after use of a fall prevention apparatus, and makes a parent rope supporter the state which is not bulky Can be performed more efficiently.

It is a side view which shows the Example of the flat body with a fall prevention apparatus which concerns on embodiment of this invention. It is a top view of the flat body with a fall prevention apparatus shown in FIG. It is a figure which shows the state in which the fall prevention apparatus was accommodated in FIG. It is the figure which looked at the flat body with a fall prevention apparatus shown in FIG. 3 from back. (A) is an external appearance perspective view of a fall prevention apparatus, (b) is the elements on larger scale of the AA arrow directional cross-section in the figure (a). (A) thru | or (c) is a figure for demonstrating the procedure in which a support | pillar is accommodated in a fixing member in FIG.5 (b). (A) is a side view of the fall prevention device shown in FIG. 5 (a), (b) is a view showing a state in which the support column is housed in the fixing member in FIG. It is a B direction arrow directional view in the figure (b). (A) is a C direction arrow directional view in FIG.7 (b), (b) is a figure which shows the state by which the side part inclination board was arrange | positioned in parallel with the perpendicular direction in the same figure (a).

  A flat body with a fall prevention device according to an embodiment of the present invention will be specifically described with reference to FIGS. In this embodiment, a flat body having a crane is described as an example, but the crane is not essential. That is, the present invention can be similarly applied to a flat body on which no crane is installed. Further, in the following description, the master rope support is attached to the side tilt plate, but the master rope support may be attached to the rear tilt plate. Is exhibited in the same manner as when the master rope support is attached to the side tilt plate.

1 and 3 are side views showing examples of a flat body with a fall prevention device according to an embodiment of the present invention. FIG. 1 shows a state of the fall prevention device in use, and FIG. The state of the fall prevention device when the body is running is shown. 4 corresponds to a view of the flat body with the fall prevention device shown in FIG. 3 as viewed from the rear.
5 (a) is an enlarged perspective view showing the master rope support in FIG. 1, and FIG. 5 (b) is an enlarged view of a part of the cross section taken along line AA in FIG. 5 (a). It is. In addition, in Fig.5 (a), the side part tilt board to which the master rope support tool was attached is shown with the broken line.

  As shown in FIGS. 1 to 4, the flat body with a fall prevention device of the present invention includes a pair of side tilt plates 2, 2 and a rear tilt plate 3 so as to surround both side ends and the rear end of the loading platform 1. The side tilt plates 2 and 2 and the rear tilt plate 3 are connected to the cargo bed frame 5 via the hinges 4 so that the lower end portions of the side tilt plates 2 and 2 and the rear tilt plate 3 are rotatable. Further, a fall prevention device 9 comprising a master rope 10 and a pair of master rope supports 11, 11 is attached to the upper end of the side tilt plate 2, and a crane 7 can turn between the loading platform 1 and the cab 6. Outriggers 8 and 8 are installed on both sides of the crane 7.

As shown in FIGS. 5 (a) and 5 (b), the master rope support 11 includes a fixing member 12 and a support column 13 formed of a long channel steel having a substantially U-shaped cross section, The support member 14 supports the support column 13 in a state perpendicular to the fixing member 12.
The fixing member 12 has a groove 12a that opens toward the loading platform 1 in a state in which the side tilt plate 2 is arranged in parallel with the vertical (see FIG. 3 or FIG. 4), and in the longitudinal direction of the side tilt plate 2 The side surface 12c is bonded and fixed to the upper end surface 2a in parallel to the upper end surface 2a using a bolt or the like. In addition, the fixing member 12 is partially cut off at the tip side so that the entire length of the side surface 12d is shorter than the side surface 12c. The side surface 12c has a part of its upper end that is bent in a direction opposite to the groove 12a, and has an “L” shape in side view. A rectangular flat plate-shaped locking tool 17 is installed on the side surface 12c so as to be locked to the tip end 13b of the column 13 stored in the fixing member 12.
The support column 13 is connected to the fixing member 12 through a shaft body 15a so that the base end 13a is rotatable. When the support column 13 is rotated until it is parallel to the longitudinal direction of the fixing member 12, the groove 12a has a groove. 13c is housed inside the groove 12a in a state of facing each other. Further, in the vicinity of the tip 13b of the support column 13, a rod-shaped hook 15c used for hooking one end of the master rope 10 is installed inside the groove 13c.

Thus, in the flat body with the fall prevention device of the present invention, since the column 13 is always attached to the loading platform 1, the column 13 is installed again when working on the loading platform 1, or the column 13 is mounted after the operation. There is no need to remove it. When the support column 13 is rotated 90 degrees with respect to the fixing member 12, the support 13 is in a state perpendicular to the loading platform 1, and the function as the parent rope support tool 11 is exhibited. Further, when the master rope 10 is not used, the master rope support 11 is folded small by removing the master rope 10 from the support post 13 and turning it in a direction in which the angle formed with the fixing member 12 is reduced. It becomes a state which is not bulky.
That is, in the flat body with the fall prevention device of the present invention, when performing work such as loading and unloading of luggage, the work of installing and removing the support column 13 does not occur, and the operation of the master rope support 11 is easy. Therefore, work such as loading and unloading of luggage can be performed efficiently in a short time. Furthermore, since the fall prevention device 9 is not bulky, it does not become an obstacle during traveling. In addition, it is economical because it is not necessary to provide a separate storage space.

The support member 14 is made of a long plate-like or rod-like steel material, and a protrusion 16b is provided at the distal end 14b, and the base end 14a is connected to the column 13 via a shaft body 15b so as to be rotatable. When the distal end 14a is rotated in a direction approaching the distal end 13b and becomes parallel to the longitudinal direction of the support column 13, the structure is accommodated in the groove 13c. Further, a locking hole 16a is provided in the bottom surface 12b of the groove 12a of the fixing member 12 so that the fixing member 12 and the column 13 can be locked to the protrusion 16b in a vertical state.
In addition, the interval between the portions where the shaft bodies 15a and 15b are respectively provided and the interval between the portions where the shaft body 15a and the locking holes 16a are respectively provided are set to be shorter than the entire length of the support member 14. Has been.

When the protrusion 16b of the tip 14b of the support member 14 is locked in the locking hole 16a of the fixing member 12, the support column 13 is rotated in the direction indicated by the arrow D in FIG. Is blocked. When the master rope 10 is stretched between the pair of master rope supports 11, 11 as shown in FIG. 1, the strut 13 is moved by the master rope 10 and the arrow E in FIG. The rotation in the direction indicated by is also prevented. In this case, since there is no possibility that the support column 13 is inadvertently rotated during use of the fall prevention device 9, the operator can use the fall prevention device 9 safely.
In the case of the present embodiment, as shown in FIG. 5B, the base end 13a of the column 13 is fixed to the fixing member 12 so that the angle formed by the fixing member 12 and the column 13 does not rotate more than 90 degrees. It has a structure that interferes with the base end 12e. Therefore, even when the master rope 10 is not attached to the master rope support tool 11, the support 13 is not prepared in any direction indicated by the arrows D and E as long as it is supported by the support member 14. There is no risk of turning.

6A shows a state in which the support column 13 is rotated in the direction indicated by the arrow E so that the angle formed with the fixing member 12 in FIG. 5B is 90 degrees or more, and FIG. FIG. 6C shows a state in which the member 14 is rotated and the protruding portion 16b is extracted from the locking hole 16a, and FIG. 6C shows a state in which the column 13 is rotated until it is substantially parallel to the fixing member 12. ing.
FIG. 7A is an external view showing a state in the middle from the state of FIG. 6B to the state of FIG. 6C by rotating the support column 13, and FIG. FIG. 7C is an external view showing a state in which the support column 13 is further rotated from the state of c) and the support column 13 is housed in the fixing member 12, and FIG. 7C is a view in the direction of arrow B in FIG. is there.
Of the components shown in these drawings, those shown in FIGS. 1 to 5 are given the same reference numerals and explanation thereof is omitted.

As described above, in the state shown in FIG. 5B, the movable range of the support 13 is limited by the master rope 10 and the support member 14, and the support 13 is in any direction indicated by the arrows D and E. However, it is impossible to rotate. However, in the case where the rotation of the support 13 is not constrained by the master rope 10, such as when the master rope 10 is not stretched between the pair of master rope supports 11, 11, the support pillar 13 is The angle formed with the fixing member 12 is rotatable to a predetermined angle exceeding 90 degrees.
When the support column 13 is rotated by 90 degrees or more with respect to the fixing member 12 as shown by an arrow E in FIG. 6A, the support member 14 is moved by an arrow F as shown in FIG. By rotating in the direction shown, the protrusion 16b can be extracted from the locking hole 16a. Thereby, the restraint by the support member 14 is removed, and the support column 13 can be rotated in the direction indicated by the arrow D. Therefore, when the support member 14 is further rotated in the direction indicated by the arrow F until it becomes parallel to the column 13 and the column 13 is rotated in the direction indicated by the arrow D, the state shown in FIG. After the state of c), the state finally shown in FIG. 7B or FIG. 7C is obtained.

FIG. 8A is a view in the direction of the arrow C in FIG. 7B, and FIG. 8B is the side tilt plate 2 rotated in FIG. 8A so as to be parallel to the vertical direction. It is a figure which shows a state. 1 to 7 are denoted by the same reference numerals in FIG. 8 and description thereof is omitted. In these drawings, the shaft body 15a and the hooking tool 15c are not shown.
As shown in FIGS. 8A and 8B, the width of the column 13 is narrower than the width of the groove 12a of the fixing member 12, so that the side surface 13d of the column 13 is in contact with the side surface 12c of the fixing member 12. Absent. As described above, the support column 13 has the base end 13a connected to the fixing member 12 via the shaft body 15a. However, in such a mechanical product, usually, the rotation operation of the support column 13 is performed smoothly. The clearance of the shaft hole (not shown) of the support column 13 with respect to the shaft body 15a and the clearance between the inner surface of the groove 12a of the fixing member 12 and the outer surface of the support column 13 are set larger than in the case of a precision machine product or the like. Further, since the support column 13 is a long member and only the base end 13a is connected to the side surfaces 12c and 12d, the amount of movement allowed in the width direction of the fixing member 12 is particularly different at the tip end 13b. Bigger than

Therefore, for example, when the side tilt plate 2 is in a horizontal state as shown in FIG. 8 (a), the support column is arranged so that the side surface 13e of the tip 13b is close to the side surface 12d inside the groove 12a of the fixing member 12. Even if 13 is disposed, if the side tilt plate 2 is rotated 90 degrees so that the side tilt plate 2 is parallel to the vertical direction as shown in FIG. To move down.
In addition to this, since the support column 13 is cantilevered by the fixing member 12, the side tilt plate 2 is rotated from the state shown in FIG. 8A to the state shown in FIG. 8B. Then, the support | pillar 13 bends with dead weight, and the front-end | tip 13b is arrange | positioned below rather than the base end 13a.

  As shown in FIG. 8A, when the column 13 is disposed inside the groove 12a so that the side surface 13e of the tip 13b is close to the side surface 12d in a state where the side tilt plate 2 is horizontal, the locking tool 17 is disposed. Is installed so as not to be locked to the tip 13b. In contrast, when the side tilt plate 2 is rotated 90 degrees and the side surface 13d of the tip 13b approaches the side surface 12c as shown in FIG. 8B, the side tilt plate 2 can be locked to the tip 13b. The locking tool 17 is installed on the side surface 12c of the fixing member 12 so as to protrude a predetermined length from the side surface 12c toward the side surface 12d.

That is, in the master rope support 11, when the side tilt plate 2 is in a horizontal state, the tip 13 b of the support column 13 moves within a predetermined range in the width direction inside the groove 12 a of the fixing member 12. It is possible. Therefore, by adjusting the position of the tip 13b with respect to the width direction of the groove 12a by holding the tip 13b by hand so as not to be locked with the locking tool 17, the column 13 can be moved within the vertical plane. It can be turned. As already described, the fixing member 12 is partly cut off at the tip side so that the entire length of the side surface 12d is shorter than the side surface 12c, so that the position of the tip 13b of the column 13 is adjusted. The above-described operation can be performed very easily.
On the other hand, when the side tilt plate 2 is in a state parallel to the vertical direction, the locking tool 17 is locked to the tip 13b of the column 13, and the column 13 is unable to rotate. At this time, the locking tool 17 functions as a lock mechanism that restrains the support column 13 from rotating. Usually, the side tilt plate 2 is always in a state parallel to the vertical direction during traveling, and therefore the support 13 does not have to be rotated unintentionally according to the flat body with the fall prevention device having the above structure. Accordingly, safety during traveling can be ensured.

  The structure of the flat body with the fall prevention device of the present invention is not limited to that shown in this embodiment. For example, instead of using the grooved steel as the fixing member 12 or the support column 13, a solid or hollow rod-shaped body can be used. However, as shown in the present embodiment, the fixing member 12 is made of groove steel, and the support 13 is housed in the groove 12a. By storing 13 in the fixing member 12, the support column 13 can be prevented from interfering with other work. Thereby, those working efficiency improves. Moreover, since the support | pillar 13 is protected by the fixing member 12, there also exists a merit that the parent rope support tool 11 is hard to break down.

Furthermore, as shown in the present embodiment, the support column 13 is made of groove steel, and the structure is attached to the fixing member 12 so that the groove 13c faces the groove 12a in a state parallel to the longitudinal direction of the fixing member 12. According to this, the parent rope support 11 is reduced in weight compared to the case where the support column 13 is a solid rod-like body. Moreover, since dust or the like hardly collects in the groove 12a of the fixing member 12 or the groove 13c of the support column 13, the frequency of cleaning the master rope support 11 can be reduced.
In addition, in this embodiment, since the base end 14a of the support member 14 is connected to the support column 13 via the shaft body 15b so as to be rotatable, the support member 14 is rotated to enter the groove 13c. In this state, the support column 13 can be stored in the groove 12a of the fixing member 12. Thereby, the master rope support 11 will be in the state which is not further bulky.

The support member 14 may have a structure in which the base end 14a is detachably attached to the support 13 instead of being connected to the support 13 via the shaft 15b. In this case, when the support column 13 is housed in the groove 12a of the fixing member 12, a new operation of removing the support member 14 from the support column 13 occurs. The actions and effects related to the rope support 11 are similarly exhibited. In the case of the structure shown in this embodiment, the support 13 is fixed by a simple operation of extracting the protrusion 16b from the locking hole 16a and rotating the support member 14 so as to be parallel to the support 13. The twelve grooves 12a can be stored inside. That is, according to the above-described structure shown in the present embodiment, the support 13 is tilted after the use of the fall prevention device 9 so that the parent end 14a of the support member 14 is detachably attached to the support 13 and the parent member 14 is tilted. It is possible to more efficiently perform the operation of making the rope support 11 not bulky.
In this embodiment, the locking hole 16a is used as the locking portion of the protrusion 16b. However, the present invention is not limited to this structure. For example, instead of the locking hole 16a, the side surface 12c of the groove 12a of the fixing member 12 is used. Alternatively, a convex portion may be provided on the side surface 12d and this may be used as a locking portion.
Further, in this embodiment, a rectangular flat plate material is used as the locking member 17, but the convex portion is formed on the side surface 12 c of the fixing member 12 so as to be locked with respect to the tip 13 b of the support column 13 in a predetermined case. May be used instead of the locking member 17.
Further, instead of attaching the hooking tool 15c to the support column 13, a hole through which the tip of the master rope 10 can be inserted is drilled in the side surface 13d and the side surface 13e of the tip 13b. You may make it hang on.

  Further, the bottom surface 12b of the fixing member 12 is joined and fixed to the upper end surface 2a of the side tilt plate 2 instead of joining and fixing the side surface 12c of the fixing member 12 to the upper end surface 2a of the side tilt plate 2. When the tilt plate 2 is parallel to the vertical direction, the column 13 can be structured to be rotatable in the vertical plane. However, in the structure shown in the present embodiment, when the column 13 is rotated 90 degrees while the side tilt plate 2 is horizontal, the column 13 becomes vertical with respect to the loading platform 1 and the side tilt plate 2 is vertical. In a state parallel to the direction, the column 13 only has a function of being able to rotate horizontally toward the inside of the loading platform 1 and not rotating in the other direction. In this case, there is a merit that the master rope support 11 can be used in a state where the side tilt plate 2 is tilted and the loading platform 1 is widened. In addition, the side tilt plate 2 is parallel to the vertical direction during traveling. In this state, even if the lock mechanism or the like that prevents the support 13 from rotating is removed, the support 13 is attached to the loading platform 1. Since it does not rotate outward, it is safe.

  The invention described in claims 1 to 6 can be applied to a flat body to which a side tilt plate and a rear tilt plate are attached so as to be rotatable with respect to the loading frame.

  DESCRIPTION OF SYMBOLS 1 ... Loading platform 2 ... Side part tilt plate 2a ... Upper end surface 3 ... Rear part tilt plate 4 ... Hinge 5 ... Loading platform frame 6 ... Cab 7 ... Crane 8 ... Outrigger 9 ... Fall prevention device 10 ... Master rope 11 ... Master rope support 12 ... fixing member 12a ... groove 12b ... bottom face 12c, 12d ... side face 12e ... base end 13 ... post 13a ... base end 13b ... tip 13c ... groove 13d, 13e ... side face 14 ... support member 14a ... base end 14b ... tip 15a, 15b ... Shaft 15c ... Hanging tool 16a ... Locking hole 16b ... Protrusion 17 ... Locking tool

The invention described in claims 1 to 3 can be applied to a flat body to which a side tilt plate and a rear tilt plate are attached so as to be rotatable with respect to the loading frame.

Claims (6)

Equipped with a fall prevention device consisting of a master rope and a pair of master rope supports,
The parent rope support is
A long fixing member fixed in parallel to the longitudinal direction on the upper end surface of the tilt plate installed so as to surround the loading platform;
A long strut with a base end pivotably connected to the fixing member and the master rope hooked near the tip,
An end portion is detachably attached to at least one of the support column and the fixing member, and a support member that supports the support column perpendicular to the fixing member.
A flat body with a fall-preventing device, wherein the fixing member is installed on the tilt plate so that the column can rotate in a vertical plane. The fixing member is a grooved steel having a U-shaped cross section,
2. The flat body with a fall prevention device according to claim 1, wherein the support column is formed to be able to be stored in the groove by being rotated to a state parallel to the longitudinal direction of the fixing member.   The fixing member is characterized in that one side surface is bonded and fixed to the upper end surface of the tilt plate so that the groove opens to the loading platform side in a state where the tilt plate is arranged in parallel with the vertical direction. The flat body with a fall prevention device according to claim 2.   In the state where the support column is housed in the groove of the fixing member and the tilt plate is disposed in parallel with the vertical direction, the support member is displaced downward with the deformation or movement of the support column due to its own weight. 4. The flat body with a fall prevention device according to claim 3, wherein a locking tool is installed on the fixing member so as to be locked. The support column is formed of a grooved steel having a U-shaped cross section so that the support member can be accommodated therein,
The flat body with a fall prevention device according to any one of claims 1 to 4, wherein the flat members are installed so that the grooves face each other in a state parallel to the longitudinal direction of the fixing member. The support member can be housed in the groove of the support column in a state parallel to the longitudinal direction of the support column, the base end of the support member is rotatably connected to the support column, and the protrusion is formed at the distal end thereof. Provided,
6. The flat body with a fall prevention device according to claim 5, wherein a locking portion is provided on the fixing member so as to be locked to the protrusion in a state where the support column and the fixing member are perpendicular to each other.

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