JP5301324B2 - Loading platform lifting device and loading platform removal method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a load receiving platform elevating device capable of preventing decrease of a shipping space for a load on a platform when not in use, and a removing method of a load receiving platform. <P>SOLUTION: The load receiving platform 2 on which the load is placed is connected via a hinge 8 to a support body 7 mounted via an arm body 4 on the platform 11 of a freight car C. When the load receiving platform elevating device 1 is not in use, the load receiving platform elevating device 1 is set to an upper position or a grounding position. Then, the connection of the load receiving platform 2 by a hinge 8 is canceled, and the load receiving platform 2 is removed from the support body 7. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a load receiving table lifting / lowering device that is mounted on a loading platform of a vehicle and used for loading and unloading loads and a method for removing the loading platform.

  For example, Patent Document 1 discloses a load receiving table lifting device that is attached to a cargo vehicle and used for loading and unloading loads. The load receiving platform lifting device includes a base bracket fixed on a vehicle loading platform, a load receiving platform on which a load is placed, a support that supports the load receiving platform, a support that supports the support, and is mounted on the base bracket. An arm that is movably attached is provided, and the load receiving platform can be moved up and down between the ground and the loading platform by rotating the arm up and down. Moreover, when the vehicle travels without loading / unloading of the load, the load receiving platform elevating device can be stored on the load receiving platform by raising the load receiving platform onto the loading platform (Patent Document 1).

Japanese Utility Model Publication No. 63-44272 (see FIG. 2)

  However, in such a load receiving platform lifting device, since the load receiving platform is stored on the loading platform, for example, when loading and unloading a light load manually, the load receiving platform lifting device is not used. There is a cradle on top. For this reason, there has been a problem that the space for loading luggage on the loading platform is reduced.

  Therefore, the present invention has been made in view of the above-described problems, and a load receiving platform lifting device and a load receiving stand detachment capable of preventing a load loading space on the loading platform from being reduced when the load receiving platform lifting device is not used. It aims to provide a method.

A load receiving platform lifting apparatus according to the present invention is a load receiving platform lifting apparatus that is mounted on a load platform of a vehicle, and includes a base portion that is mounted on the load platform, an arm body that is supported by the base portion so as to be vertically rotatable, and An apparatus main body having a support body that is supported so as to be movable up and down by the vertical rotation of the arm body; a grounding position for grounding to the ground by raising and lowering the support body of the apparatus main body; and an upper position positioned above the loading platform And a connecting means that connects the load receiving base to the support and can release the connection, and the connecting means places the load receiving base in a horizontal posture and an upright posture. And a connecting portion that is connected to the support body so that it can be raised and lowered, and is disposed at a position where the connection can be released without interfering with the apparatus main body in the state where the load receiving stand is in the standing posture. It is characterized in that is.

According to the present invention, since the load receiving table can be connected to and disconnected from the support body by the connecting means, the load receiving table is removed from the support body by releasing the connection of the load receiving table by the connecting means when the load receiving table lifting device is not used. Can be removed. For this reason, it can prevent that the loading space of the load on a loading platform reduces.
In addition, since the connection by the connecting means can be released without interfering with the apparatus main body in a compact state in which the load receiving stand is in an upright posture, the work for removing the load receiving stand can be performed in a space-saving manner.

Moreover, it is preferable that the said connection means is arrange | positioned in the position which can cancel | release the said connection, without interfering with the said apparatus main body in the state which set the said load receiving stand to the said upper position. In this case, since the connection by the connecting means can be released without interfering with the apparatus main body in a state where the load receiving platform is positioned above the loading platform, the work for removing the load receiving table on the loading platform can be easily performed. It can be carried out.
Further, the load receiving platform elevating device has a restricting means for restricting the load receiving stand from falling from the standing posture when the connection by the connecting means is released in a state where the load receiving stand is in the up position in the standing posture. Furthermore, it is preferable to provide.
Moreover, it is preferable that the said connection means is arrange | positioned in the position which can cancel | release the said connection, without interfering with the said apparatus main body in the state which set the said load receiving stand as the said earthing | grounding position. In this case, it is possible to release the connection by the connecting means without interfering with the device main body in the state where the load receiving table is in the grounding position. Therefore, when the load receiving table is removed from the support body, the work is performed to remove the load receiving table from the loading table. Is no longer necessary. Therefore, it is possible to easily remove the load receiving table.

The front Symbol connecting portion, it is preferable that the receiving platform is connected to the receiving platform so as to be lowered to the ground position from the upper position without interfering with the loading platform in the state of the standing posture . In this case, since the load receiving platform can be lowered from the retracted state in the upright position to the grounding position without raising or lowering, when moving the load receiving table from the retracted state to the grounding position and removing it, The removal operation can be performed quickly.

Further, the load receiving platform elevating device has a restricting means for restricting the load receiving stand from falling from the standing posture when the connection by the connecting means is released in a state where the load receiving stand is in the grounding position in the standing posture. Furthermore, it is preferable to provide. In this case, when the connection by the connecting means is released, the restricting means can prevent the load receiving table from falling from the standing posture, so that it is possible to safely remove the load receiving table from the standing position in the grounding position. it can.
Further, the restricting means restricts the falling of the stand from the standing posture by engaging the load receiving table with the support body, while rotating the arm body upward and leaving the load receiving table at the grounding position. The engagement is preferably released by raising the support. In this case, since the restriction by the restricting means can be released in accordance with the operation in which the arm body rotates upward, that is, the operation in which the arm body is stored on the loading platform, the work for removing the loading platform at the ground contact position is quickly performed. be able to.

In addition, the present invention is supported by a base portion mounted on a loading platform of a vehicle, an arm body supported by the base portion so as to be rotatable up and down, and movable up and down by the vertical rotation of the arm body. It is possible to move up and down between an apparatus main body having a support body and an upper position above the loading platform and a grounding position to contact the ground by raising and lowering the support body, and can be raised and lowered in a horizontal posture and a standing posture. A load receiving table connected to the support via connecting means, and a method for removing the load receiving table from a load receiving table lifting device, wherein the load receiving table is in the upright position at the upper position. The connection means is disconnected by the connecting means, and the load receiving table is detached from the support. According to the present invention, since the connection by the connecting means can be released in a state where the load receiving platform is positioned above the loading platform, the work for removing the load receiving platform on the loading platform can be easily performed.

In addition, the present invention is supported by a base portion mounted on a loading platform of a vehicle, an arm body supported by the base portion so as to be rotatable up and down, and movable up and down by the vertical rotation of the arm body. It is possible to move up and down between an apparatus main body having a support body and an upper position above the loading platform and a grounding position to contact the ground by raising and lowering the support body, and can be raised and lowered in a horizontal posture and a standing posture. A load receiving platform that is connected to the support via connecting means, and a method for removing the load receiving platform from a load receiving platform lifting device, wherein the load receiving platform is moved by rotating the arm body downward. The load receiving table is lowered and grounded in the standing posture, the connection of the load receiving table by the connecting means is released at the contact position, and the load receiving table is detached from the support. According to the present invention, the load receiving base can be detached from the support body by releasing the connection by the connecting means in a state where the load receiving base is in the grounding position. For this reason, since the operation | work which removes the removed cradle from a cradle becomes unnecessary, the removal operation | work of a cradle can be performed easily.

  In addition, the present invention is supported by a base portion mounted on a loading platform of a vehicle, an arm body supported by the base portion so as to be rotatable up and down, and movable up and down by the vertical rotation of the arm body. It is possible to move up and down between an apparatus main body having a support body and an upper position above the loading platform and a grounding position to contact the ground by raising and lowering the support body, and can be raised and lowered in a horizontal posture and a standing posture. A load receiving table connected to the support via connecting means, and a method for removing the load receiving table from a load receiving table lifting device, wherein the load receiving table is in the upright position at the upper position. The arm body is rotated downward to lower the load receiving table to the grounding position, the connection of the load receiving table by the connecting means is released at the grounding position, and the load receiving table is removed from the support body. And wherein the Succoth. According to the present invention, in this case, the load receiving platform can be lowered from the retracted state to the grounded position without being raised and lowered from the retracted state in which the load receiving stand is in the upright position. When removing it, the removal work can be performed quickly.

  In addition, the present invention is supported by a base portion mounted on a loading platform of a vehicle, an arm body supported by the base portion so as to be rotatable up and down, and movable up and down by the vertical rotation of the arm body. It is possible to move up and down between an apparatus main body having a support body and an upper position above the loading platform and a grounding position to contact the ground by raising and lowering the support body, and can be raised and lowered in a horizontal posture and a standing posture. Lifting and lowering of the load receiving table, comprising: a load receiving base connected to the support via connecting means; and a restricting means for restricting falling from the standing posture by engaging the load receiving base with the support. A method of removing the load receiving platform from an apparatus, wherein the load receiving platform is lowered to the grounding position by rotating the arm body downward from a state where the load receiving table is in the standing posture, and is moved to the grounding position. The connection means releases the connection of the load receiving table, and the restricting means engages the load receiving table with the support body to restrict the falling from the standing posture, and the arm body is rotated upward to The support body is lifted while leaving the load receiving base in the ground contact position, thereby releasing the engagement by the restricting means and removing the load receiving base from the support. According to the present invention, the restriction by the restricting means can be released in accordance with the operation in which the arm body rotates upward, that is, the operation in which the arm body is stored on the loading platform. Can be done.

  According to the present invention, since the load receiving device lifting device can be removed from the load carrier when the load receiving device lifting device is not used, it is possible to prevent the load placement space on the load carrier from being reduced.

It is a side view of the load receiving table raising / lowering apparatus which concerns on 1st embodiment of this invention, and has shown the state which has a load receiving stand in an upper position with a horizontal attitude | position. It is a side view of the said cargo receiving stand raising / lowering apparatus, and has shown the state which has a cargo receiving stand in the raising / lowering intermediate position. It is a side view of the said cargo receiving stand raising / lowering apparatus, and has shown the state which has a cargo receiving stand in a grounding position. It is a side view of the said load receiving stand raising / lowering apparatus, and has shown the state which has a load receiving stand in the up position in a standing posture. It is a rear view of the load receiving table raising / lowering apparatus of FIG. It is explanatory drawing explaining the hinge part (connection part) of the said cargo receiving stand raising / lowering apparatus. It is a front view of the standing lock apparatus (regulation means) of the said cargo receiving stand raising / lowering apparatus. It is a side view of the said standing lock apparatus. It is the schematic block diagram which looked at the hinge part of Fig.6 (a) from the right side. It is the figure which looked at the hinge part of FIG. 9 from the side. It is explanatory drawing in the case of raising / lowering a cultivator as a load of the said cargo receiving stand raising / lowering apparatus. It is a top view of the load receiving stand of the said load receiving stand raising / lowering apparatus. It is a side view which shows the state which set the said load receiving stand to the earthing | grounding position in the standing posture. It is a side view which shows the state which rotated the arm body upward from the state of FIG. FIG. 14 is a side view of the standing lock device when the arm body is rotated upward from the state of FIG. 13. It is a side view which shows the state which rotated the arm body upwards from the state of FIG. 14 to a driving | running | working state. It is the perspective view which shows the connection means of the load receiving platform raising / lowering apparatus which concerns on 2nd embodiment of this invention, and the figure seen from the side. It is a perspective view which shows the connection means of the load receiving table raising / lowering apparatus which concerns on a reference example .

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1, FIG. 2, FIG. 3 and FIG. 4 are side views showing a first embodiment of the load receiving platform lifting apparatus of the present invention. FIG. 5 is a rear view of the load receiving table lifting apparatus shown in FIG. The load receiving platform lifting / lowering device 1 includes a device main body U that is mounted on a load carrier 11 of a cargo vehicle C, and is used for loading and unloading loads between the ground and the load carrier 11. A rear side door (opening / closing door) 10 is provided at the rear end portion of the loading platform 11 so as to stand up when the vehicle is traveling. Further, in FIG. 5, a side door 20 is provided at a side end portion in the vehicle width direction on the loading platform 11 so as to stand in a standing state when the vehicle travels.

  Each of these doors 10 and 20 can be opened and closed by being pivoted in the vertical direction by a hinge provided at the edge of the loading platform 11, and standing up from the edge of the loading platform 11 in a closed state (see FIG. 4). 5), and in the open state, the bag 11 hangs downward from the edge of the loading platform 11 (see FIGS. 1 to 3). The loading platform 11 is provided with a securing portion (not shown) that secures the standing doors 10 and 20 in the standing posture. The lashing portion is operated by the user, and is switched between a lashing state in which the doors 10 and 20 are restrained in a standing posture (closed state) and a release state in which the sashing state is enabled. In FIG. 5, the rear door 10 is in an open state. The doors 10 and 20 are made of a steel plate or the like.

  The load receiving platform lifting / lowering device 1 includes a load receiving stand 2 on which a load is placed. The load receiving stand 2 has a disk-shaped load receiving stand main body 21 having a placement surface 2a on which a load is placed. The load receiving platform lifting / lowering apparatus 1 shown in the figure is attached to the rear end portion of the upper surface 11a of the load carrier 11, and the load receiving platform 2 is positioned above the rear end portion of the load carrier 11 (see FIG. 1) and the vehicle. It moves up and down between the grounding position (see FIG. 3) that grounds on the ground behind. The vehicle front-rear direction matches the depth direction of the load receiving platform 2 in the state of FIGS. 1 to 3, and the vehicle width direction (the left-right direction of the vehicle C) matches the width direction of the load receiving platform 2.

  The apparatus main body U of the load receiving platform lifting / lowering apparatus 1 includes a base bracket (base portion) 3 attached to the upper surface 11a of the load receiving platform 11, a support body 7 connecting the load receiving platform 2, and the base bracket 3 and the support body 7. The arm body 4 connected, the lift cylinder 5 which expands and contracts, and the power unit 6 which drives this lift cylinder 5 are provided. The base bracket 3, the arm body 4, and the support body 7 are provided at the end of one side in the vehicle width direction at the rear part of the loading platform 11 (see FIG. 5). And the goods receiving stand 2 is provided in the position near the center of the vehicle width direction.

  The base bracket 3 is detachably fixed to the rear portion of the upper surface 11 a of the loading platform 11 by bolts 12 and nut bodies 27. Thereby, attachment to the freight vehicle C of the cargo receiving platform raising / lowering apparatus 1 is easy, and what is necessary is just to form a bolt hole in the freight vehicle C side, and a big remodeling is unnecessary.

  The arm body 4 has a first arm 13 and a second arm 14 and constitutes a parallel link. The first arm 13 is a member extending in one direction from the base bracket 3, the base portion 13 a of the first arm 13 is rotatably attached to the upper portion of the base bracket 3, and the tip portion 13 b is the support 7. It is rotatably attached to the upper part of a (side support frame 7a described later). The second arm 14 is a member extending from the base bracket 3 along the first arm 13, the base portion 14 a of the second arm 14 is rotatably attached to the base bracket 3, and the tip portion 14 b is supported. The body 7 (side support frame 7a) is rotatably attached.

  The arm body 4 swings between a standing position (FIG. 1) extending upward from the base bracket 3 and a rear position (FIG. 3) extending rearward and obliquely downward toward the ground. be able to. With this arm body 4, the support body 7 and the load receiving platform 2 are moved up and down between an upper position (FIG. 1) above the upper surface 11 a of the rear portion of the loading platform 11 and a grounding position (FIG. 3) that contacts the ground behind the vehicle. be able to. Moreover, as shown in FIGS. 1-3, since the arm body 4 comprises the parallel link, it can be raised / lowered with the load receiving stand 2 (load receiving stand main body 21) made into a horizontal attitude | position.

  In FIG. 5, the load receiving platform 2 includes the load receiving platform main body 21 whose surface is a placement surface 2 a on which a load is placed, and a first support member 22 attached to the load receiving platform main body 21. The support member 22 is a member that linearly extends in the width direction of the cargo cradle 2, is fixed to the back side of the cargo cradle body 21, and is further partially outward from the side of the cargo cradle body 21. Is a protruding member. A second support member 23 is provided on the back surface of the cargo receiving body 21. The support member 23 has substantially the same length as the width direction dimension of the cargo receiving table main body 21. In the illustrated form, the support members 22 and 23 are constituted by hollow square pipes and function as beam members (strength members) in the width direction of the load receiving table main body 21.

  The support 7 has a side support frame 7a, and the first support member 22 is attached to the lower part of the side support frame 7a via a hinge part 8 (connecting part). The side support frame 7a has a vertically long box shape, and houses the arm body 4 and the lift cylinder 5 and opens in front of the vehicle in order to make the arm body 4 and the lift cylinder 5 function.

  FIG. 6 is an explanatory view for explaining the hinge portion 8. The hinge part 8 is connected to the support body 7 so that the posture of the cargo receiving table 2 can be changed. The hinge part 8 is rotatable to the first bracket part 8a, the first bracket part 8a fixed to the side support frame 7a, the second bracket part 8b fixed to the support member 22, and the second bracket part 8b. As a hinge shaft 8c. The center line of the hinge shaft 8 c is horizontal and the width direction of the load receiving platform 2. The hinge base 8 enables the load receiving base body 21 fixed to the support member 22 to swing up and down around the horizontal axis a with respect to the side support frame 7a. As a result, when the vehicle travels without using the load receiving platform 2 for loading and unloading the load, the load receiving platform main body 21 is in an upright position on the loading platform 11 (see FIGS. 4 and 6A), and the loading and unloading of the load is performed. During operation, the load receiving body 21 can be in a horizontal posture (see FIGS. 1 and 6B).

  In FIG. 1, the first support member 22 is attached to an intermediate portion in the depth direction (vehicle longitudinal direction) of the load receiving table main body 21 in a horizontal posture. In addition, when the load receiving body 21 is in the standing posture (see FIG. 4), it is an intermediate portion in the height direction. And since the said hinge part 8 is attached to this support member 22, the rotation center (horizontal axis a) of the load receiving stand 2 is located in the intermediate part of the depth direction of the load receiving stand main body 21 in side view. To do. With this configuration, a portion of the load receiving body 21 on the front side of the vehicle with respect to the horizontal axis a (a portion on the base end 2b side of the load receiving stand 2) is a posture in which the load receiving stand 2 stands (see FIG. 4). ) Is located below the horizontal axis a. In this way, in order to position a part of the cargo bed main body 21 below the horizontal axis a and above the upper surface 11a of the cargo bed 11, the first support member 22 is installed from the upper surface 11a of the cargo bed 11. The position is set high. Specifically, as shown in FIG. 4, when raising and lowering the cradle 2 in a standing posture between the running state and the ground contact position (see FIG. 13), the base end portion 2b of the cradle 2 is the cradle. The height h from the upper surface 11a to the base end portion 2b of the stand 2 is set so as not to interfere with the upper surface 11a of the eleventh surface.

  And in order to make it the use state (state of FIGS. 1-3) which loads and unloads a load, the load receiving stand 2 is rotated by the hinge part 8, the load receiving stand main body 21 is made into a horizontal posture, and the mounting surface 2a Set to face up. In FIG. 6, a contact portion 9 a and a contacted portion 9 b are provided between the first bracket portion 8 a and the second bracket portion 8 b of the hinge portion 8 in order to maintain the load receiving base body 21 in a horizontal posture. . In FIG. 6, when the contact portion 9a made of a bolt is provided in the second bracket portion 8b and the load receiving base body 21 is in a horizontal posture, the contact portion 9a (the head of the bolt) is one of the first bracket portions 8a. It abuts on the part (contacted part 9b). This restricts the load receiving table body 21 from rotating too much beyond the horizontal posture.

  Then, as shown in FIG. 4 and FIG. 6 (a), the load receiving platform 2 which is in the upper position on the loading platform 11 and is in a horizontal posture is turned by 90 ° in the hinge portion 8 to stand. The stand 2 is in a retracted state (running state) folded with respect to the side support frame 7a. In this state, the base end 2b of the load receiving platform 2 is in the lower position, the front end 2c is in the upper position, and the base end 2b and the front end 2c are arranged on the same vertical plane.

  In FIG. 5, the load receiving platform lifting / lowering device 1 has a standing lock device 17 for maintaining the load receiving stand 2 in the standing posture. The standing lock device 17 restricts the load receiving platform 2 in the standing posture from rotating in a direction that falls forward and backward. Specifically, as shown in FIG. 7, the standing lock device 17 includes an engagement member 17 a provided on the load receiving platform 2 and an engaged member 17 b provided on the support body 7 of the apparatus main body U. doing. As shown in FIG. 8, the engaged member 17b is formed in a U shape having a front plate portion 17b1, a rear plate portion 17b2, and an opening 17b4 below. A cushion rubber 17b3 is fixed to the front plate portion 17b1. When the load receiving platform 2 is raised, the engagement member 17a and the side edge of the load receiving platform 2 are arranged between the cushion rubber 17b3 of the front plate portion 17b1 and the rear plate portion 17b2. The table 2 is maintained in a standing posture.

  The engaging member 17a is always urged in the engaging direction (the arrow b direction in FIG. 7) by the elastic member (spring) 17c. For this reason, an inclined surface (not shown) formed at the front end of the engaging member 17a comes into contact with the rear plate portion 17b2 of the engaged member 17b immediately before the load receiving platform 2 is rotated upward to assume the standing posture. As a result, the plate member 17b2 is then climbed over while moving in the direction opposite to the engaging direction against the urging force of the elastic member 17c. When the engaging member 17a gets over the engaged member 17b, it is pushed in the engaging direction by the urging force of the elastic member 17c and inserted between the cushion rubber 17b3 and the rear plate portion 17b2. That is, the standing lock device 17 is in a locked state in which the load receiving platform 2 is automatically maintained in the standing posture when the load receiving platform 2 is rotated upward to the standing posture.

Thereby, when the engaging member 17a contacts the rear plate portion 17b2, it is possible to prevent the load receiving platform 2 in the standing posture from falling forward. Further, the front surface (mounting surface 2a) of the load receiving platform 2 abuts against the cushion rubber 17b3, so that the load receiving platform 2 can be prevented from falling forward. Further, when the standing lock device 17 releases the connection between the load receiving platform 2 and the support 7 by the connecting means 53 described later in a state where the load receiving platform 2 is in the standing posture, the engaging member 17a and the engaged member 17b are engaged. Thus, the load receiving platform 2 is also engaged with the support 7 so that the load receiving platform 2 can be prevented from falling from the standing posture.
Further, the standing lock device 17 has an operating rod 17d that allows the engaging member 17a to be inserted and removed from the engaged member 17b. When the operator operates (pushes and pulls) the operating rod 17d, the locked state and the unlocked state for releasing the locked state can be switched.

  In FIG. 5, the load receiving platform lifting / lowering device 1 has a horizontal lock device 18 for maintaining the load receiving stand 2 in a horizontal posture. The horizontal lock device 18 restricts the load receiving base body 21 in a horizontal posture from rotating in a direction in which it is in a standing posture. The horizontal lock device 18 is operated by an operator, and is switched between a locked state in which the load receiving platform 2 is maintained in a horizontal posture and an unlocked state in which the locked state is released.

  1 to 3, the lift cylinder 5 is a hydraulic cylinder (fluid actuator) that expands and contracts to raise and lower the load receiving table 2, and is attached between the arm body 4 and the support body 7. One end 5a of the lift cylinder 5 is rotatably attached to the first arm 13, and the other end 5b of the lift cylinder 5 is rotatably attached to the lower part of the side support frame 7a.

  The power unit 6 is a hydraulic unit that expands and contracts the lift cylinder 5, and the power unit 6 and the lift cylinder 5 constitute an elevating drive mechanism L that elevates and lowers the load receiving platform 2. When the power unit 6 switches the supply of hydraulic oil (working fluid) to the lift cylinder 5, the lift cylinder 5 can perform an expansion / contraction operation. The operation of the power unit 6 is controlled by a control device (not shown) provided in the power unit 6. When the operator operates the operation unit 7e (see FIG. 5) provided on the side support frame 7, the control device causes the power unit 6 to perform a predetermined operation.

  Although not shown, the power unit 6 has a tank for storing hydraulic oil, a pump for discharging hydraulic oil, a motor for driving the pump, and hydraulic oil applied to either the head side or the rod side of the lift cylinder 5. The hydraulic unit is integrally provided with a switching valve and the like for switching and supplying. The power unit 6 is attached to the side support frame 7 a together with the lift cylinder 5.

  According to the lifting drive mechanism L, the power unit 6 supplies hydraulic oil to the rod side of the lift cylinder 5, whereby the lift cylinder 5 performs a shortening operation and supports the load receiving platform 2 (FIG. 3) in the ground contact position. It can be lifted together with the body 7, and the load receiving platform 2 can be raised to the upper position above the loading platform 11 as shown in FIG. When the power unit 6 supplies hydraulic oil to the head side of the lift cylinder 5, the lift cylinder 5 performs an extension operation, and the load receiving platform 2 is lowered from the upper position to the ground position. By this elevating drive mechanism L, an elevating operation for loading and unloading the load placed on the load receiving platform 2 between the ground and the load platform 11 is executed.

  And the load receiving stand 2 can be changed to a standing posture (refer FIG. 4) by rotating the load receiving stand 2 in the upper position around the said horizontal axis line a by the hinge part 8. FIG. In this state, the freight vehicle C can run. Further, when the cargo vehicle C is driven, the door 10 is raised and the rear part of the loading platform 11 is closed. In this state, when the load receiving platform 2 in the upright position tries to descend to the ground, the contact portion 15 of the load receiving platform 2 comes into contact with the upper portion of the standing door 10. The descent of the said receiving stand 2 is prevented. The abutment portion 15 is made of non-metal such as rubber, resin, wood, etc., and is fixed to four places on the back side of the load receiving platform 2 as shown in FIG. When it gets down to the ground, it also functions as a buffer member that contacts the ground and prevents interference between the load receiving platform 2 and the ground (see FIG. 3).

  The load receiving platform lifting / lowering device 1 of the present invention has a device body U (base bracket 3, arm body 4, lifting drive mechanism L, at the upper position (the state shown in FIGS. 1 and 4) and the ground contact position (the state shown in FIG. 3). In addition, the load receiving platform 2 can be removed from the apparatus main body U (support 7) while the support portion 7) remains on the loading platform 11. FIG. 9 is a schematic configuration diagram of the hinge portion 8 of FIG. 6A viewed from the right side. The second bracket portion 8b on the load receiving platform 2 side is rotatably attached to the first bracket portion 8a on the support body 7 side by a hinge shaft 8c. A locking member 50 that contacts the end of the first bracket portion 8a is fixed to one end of the hinge shaft 8c, and the hinge shaft 8c is moved in the other end direction (in the direction of arrow R in FIG. 9) by the locking member 50. ) Is restricted.

  A pin member 51 is detachably attached to the other end of the hinge 8c, and the pin member 51 restricts the hinge shaft 8c from coming out in one end direction (the direction of arrow L in FIG. 9). Further, by detaching the pin member 51 from the hinge shaft 8c, the hinge shaft 8c can be extracted from the hinge portion 8 in one end direction (the direction of arrow L in FIG. 9). By extracting the hinge shaft 8 c, the first bracket portion 8 a and the second bracket portion 8 b can be separated, and the load receiving platform 2 can be easily detached from the support body 7.

  10 is a view of the hinge portion 8 shown in FIG. 9 as viewed from the side (the right side of FIG. 9). 9 and 10, the first bracket portion 8a is provided with a regulating plate 8d at the end. A hole 8f through which the hinge shaft 8c is inserted is formed in the restriction plate 8d. A through hole 8e penetrating in the diametrical direction is formed at the end of the hinge shaft 8c, and the hinge shaft 8c is inserted into the first bracket portion 8a by inserting the pin body 51c of the pin member 51 into the through hole 8e. It is prevented from falling out.

  A ring portion 51d is attached to the head portion 51a of the pin member 51 so as to be rotatable about the axis X of the head portion 51a. The inner diameter D of the ring portion 51d is formed to be larger than the outer diameter d of the hinge shaft 8c. With the pin main body portion 51c inserted through the through hole 8e, the ring portion 51d is placed on the hinge shaft 8c side. The hinge shaft 8c can be inserted into the ring 51d (see FIG. 9). Thereby, it can control that pin member 51 detaches from hinge axis 8c.

  An engaging portion 51b with which the head portion 51a of the pin member 51 is engaged is formed on the regulating plate 8d. The engaging part 51b of FIG. 10 is formed by a notch. Then, with the pin member 51 attached to the through hole 8e of the hinge shaft 8c, the head portion 51a engages with the engaging portion 51b. According to this engagement, even if the load receiving platform 2 (second bracket portion 8b) rotates around the horizontal axis, the hinge shaft 8c can be freely rotated because it is restrained by the first bracket portion 8a. First, the head portion 51a of the pin member 51 always exists on the vehicle rear side.

  For this reason, the operator grasps the ring portion 51d of the pin member 51 from the rear of the vehicle and rotates it to the rear side of the hinge shaft 8c to release the pin member 51, thereby removing the pin member 51 from the hinge shaft 8c. The hinge shaft 8c can be extracted from the hinge portion 8 after this operation. If the head portion 51a is configured not to engage with the engaging portion 51b, the hinge shaft 8c also rotates when the load receiving platform 2 (second bracket portion 8b) rotates, and the hinge shaft 8c becomes the pin member 51. , The ring portion 51d of the pin member 51 faces in a direction other than the rear of the vehicle, and it becomes difficult for the operator to pull out the pin member 51. However, according to the configuration of the present invention, this can be prevented.

  In the present embodiment, the locking member 50 and the pin member 51 connect the load receiving platform 2 to the support body 7 via the hinge portion 8 by restricting the hinge shaft 8c from coming out of the bracket portions 8a and 8b. The holding part 52 for holding in the state where it was made is comprised. Further, the holding portion 52 and the hinge portion 8 constitute a connecting means 53 that connects the load receiving platform 2 to the support body 7 and can release the connection.

  The holding portion 52 and the hinge portion 8 which are the connecting means 53 of the load receiving platform 2 without interfering with the apparatus body U such as the arm body 4 and the support body 7 in the state where the load receiving platform 2 is in the upper position and the ground contact position. It is arranged at a position where the connection can be released. That is, the pin member 51 is disposed at a position where it can be detached from the hinge shaft 8c without interfering with the apparatus main body U, and the hinge shaft 8c and the bracket portions 8a and 8b interfere with the hinge shaft 8c with the apparatus main body U. Without disposing the brackets 8a and 8b. Therefore, in a state where the load receiving platform 2 is in the upper position and the ground contact position, the load receiving platform 2 can be detached from the apparatus main body U by releasing the connection of the load receiving platform 2 by the connecting means 53.

  Further, as shown in FIG. 11, the load receiving table lifting apparatus 1 of the present invention can move up and down between the ground and the loading platform 11 using a (small) tiller P as a load. The cultivator P includes a main body 55, a handle 56 extending from the main body 55 and gripped by a user, and a wheel 57 and a rotary 58 attached to the main body 55. The rotary 58 has a plurality of blades, and is a member that rotates to cultivate the field. In order to use such a cultivator P as a load, the load receiving table elevating device 1 includes a rotary support 60 that supports the rotary 58. The rotary support 60 is detachably attached to the load receiving table main body 21 by bolts and nuts (not shown).

  FIG. 12 is a plan view of the cargo receiving platform 2. As shown in FIGS. 11 and 12A, the rotary support 60 has left and right attachment shaft portions 60b and a central connection shaft portion 60a that connects the left and right attachment shaft portions 60b. It is a U-shaped member in a plan view and can be constituted by a pipe. The rotary 58 can be mounted on the connecting shaft portion 60a in a state in which the rotary support 60 is attached to the tip portion 2c side of the load receiving platform 2. Further, the rotary support 60 can be attached to the load receiving table main body 21 so that the position of the rotary support 60 can be changed in the longitudinal direction of the vehicle, and the longitudinal position of the connecting shaft portion 60a can be adjusted according to the size of the tiller P. In addition, in the state of FIG. 12A, a space where an operator's hand can be inserted is formed between the connecting shaft portion 60 a and the tip portion 2 c of the load receiving table 2, and the load receiving table 2 is supported by the support 7. The rotary support 60 is used as a handle for lifting the load receiving platform 2 when being removed from the rack.

  On the other hand, as shown in FIG. 12 (b), the rotary support 60 functions as a load fall prevention member on the load receiving platform 2 by changing the rotary support 60 to the rear end 2 c side of the load receiving platform 2. be able to. That is, the rotary support 60 is fixed to the load receiving platform 2 with the bolt and nut so that the rotary support 60 is placed on the mounting surface 2 a and the connecting shaft portion 60 a is positioned at the base end 2 b of the load receiving platform 2. Thereby, since the rotary support 60 becomes a stepped portion that is raised from the placement surface 2a, it is possible to prevent the load on the placement surface 2a from falling (sliding down or rolling down).

Next, a method of removing the load receiving platform 2 from the support 7 will be described in detail with reference to the drawings, for the case of removing the load receiving platform 2 from the upright standing position and the removal from the standing position of the ground contact position. To do.
First, when the load receiving platform 2 is removed from the standing position in the upper position of FIG. 4, that is, the running state, the door 10 is opened, and the load receiving platform 2 connected to the support 7 is disconnected by the connecting means 53. . Specifically, the operator grips the ring portion 51d of the pin member 51 from the rear of the vehicle and inserts the hinge shaft 8c into the ring portion 51d (see FIG. 9), and then the vehicle rear side of the hinge shaft 8c. To prevent the pin member 51 from coming off by the ring portion 51d. From this state, the pin member 51 is extracted from the hinge shaft 8c while grasping the ring portion 51d, and the retaining of the hinge shaft 8c is released. Then, the hinge shaft 8c is extracted from the first bracket portion 8a on the support 7 side and the second bracket portion 8b on the load receiving platform 2 side in the L direction in FIG. Unlink.

Thereby, the connection of the goods receiving stand 2 by the connection means 53 can be cancelled | released. At this time, the pin member 51 can be detached from the hinge shaft 8c without interfering with the apparatus main body U in the upper position, and each bracket portion 8a can be separated from the apparatus main body U in the upper position without interfering with the hinge shaft 8c. , 8b.
The disconnected cradle 2 falls downward from a height h on the cradle 11, but the base end 2 b abuts on the upper surface 11 a of the cradle 11, and in this state, the standing lock device 17 stands up. Therefore, the load receiving platform 2 does not fall in the vehicle front-rear direction from the standing posture.

  Next, the load receiving platform 2 held in an upright posture by the operator is pulled downward and obliquely rearward from the rear end portion of the load loading platform 11, and the engagement member 17 a on the load receiving platform 2 side is moved downward from the opening 17 b 4 of the standing lock device 17. Let As a result, the load receiving stand 2 is released from the support 7 after the falling-down regulation by the standing lock device 17 is released. When the width of the load receiving platform 2 in the vehicle width direction is sufficiently smaller than the width of the loading platform 11 in the vehicle width direction, the load receiving platform 2 is pulled out to the starboard side (right side in FIG. 5) of the vehicle C while maintaining the load receiving platform 2 in the standing posture. Thus, it is possible to remove the support 7 from the support 7 while releasing the falling-down regulation by the standing lock device 17.

In this way, the connection of the load receiving platform 2 by the connecting means 53 can be released without interfering with the apparatus main body U in a state where the load receiving platform 2 is in the upper position above the load receiving platform 11. The removal work of the base 2 can be easily performed. In addition, since the load receiving platform 2 is located above the ground, the operator does not have to be in an extreme forward bending posture and can easily perform the release operation.
In addition, in a compact state in which the load receiving stand 2 is in a standing posture, the connection of the load receiving stand 2 by the connecting means 53 can be released without interfering with the apparatus main body U, so that the work for removing the load receiving stand 2 in the upper position can be performed. This can be done in a space-saving manner.
Furthermore, when the connection by the connecting means 53 is released after the load receiving platform 2 is in the standing posture, the standing lock device 17 controls the fall of the load receiving table 2 from the standing posture. It is possible to safely remove the load receiving platform 2 in the position.

  Next, the case where the load receiving stand 2 is removed from the traveling state while being kept in the standing posture and brought into the ground contact position will be described in detail with reference to FIGS. 13 to 16. First, from the traveling state (see FIG. 4), the door 10 is opened and the lift cylinder 5 is extended to lower the standing cradle 2 from the upper position to the ground position as shown in FIG. . At that time, the base end portion 2b of the load receiving platform 2 is lowered from a state where the base end portion 2b is disposed above the upper surface 11a of the load loading platform 11 by a height h, and therefore does not interfere with the load loading platform 11.

  From this state, the connection between the support 7 and the load receiving platform 2 by the connecting means 53 is released in the same procedure as described above. At that time, the pin member 51 can be detached from the hinge shaft 8c without interfering with the apparatus main body U such as the support 7 at the grounding position, and the hinge shaft 8c can interfere with the apparatus main body U at the grounding position. And can be extracted from each bracket portion 8a, 8b. Further, since the load receiving platform 2 is maintained in the standing posture by the standing lock device 17 (see FIG. 8), even if the connection by the connecting means 53 is released, the load receiving platform 2 cannot fall from the standing posture in the vehicle front-rear direction. Absent.

  Next, when the lift cylinder 5 is contracted, the arm body 4 rotates upward as shown in FIG. 14, and the support body 7 moves upward with respect to the load receiving platform 2 in the standing posture. Due to this upward movement, the engaged member 17b of the standing lock device 17 rotates upward together with the arm body 4, and thus moves on the arc locus f as shown in FIG. Thereby, the engaged member 17b moves upward while the opening 17b4 passes through the engaging member 17b, and the engagement between the engaged member 17b and the engaging member 17a is released. Since a gap S is formed in the front-rear direction between the rear plate portion 17b2 and the engagement member 17a, the rear plate portion 17b2 is engaged with the engagement member 17a while moving the length of the gap S forward. Since it moves further upward, the rear plate portion 17b2 does not interfere with the engaging member 17a.

  Therefore, by rotating the support body 7 together with the arm body 7, the falling restriction of the load receiving table 2 by the standing lock device 17 is released, and the load receiving table 2 can be detached from the support body 7. In addition, since the fall restriction of the load receiving platform 2 is released during the upward rotation of the arm body 4, an operator holds the rotary support 60 of the load receiving platform 2 before rotating the arm body 4. What is necessary is just to support the receiving stand 2 in a standing posture separately. Furthermore, if the arm body 7 is rotated to the upper position, the apparatus main body U can be brought into a running state as shown in FIG. 16, and if the coffin door 10 is closed in this state, the vehicle C is run. Can be made.

Thus, since the connection by the connecting means 53 can be released without interfering with the apparatus main body U in a state where the load receiving platform 2 is in the grounding position, the load receiving platform 2 is removed when the load receiving platform 2 is removed from the support 7. The work of unloading from the loading platform 11 to the ground becomes unnecessary. For this reason, the removal operation | work of the load receiving stand 2 in an earthing | grounding position can be performed easily.
In addition, in a compact state in which the load receiving platform 2 is in an upright posture, the connection of the load receiving platform 2 by the connecting means 53 can be released without interfering with the apparatus main body U. This can be done in a space-saving manner.
Furthermore, when the connection by the connecting means 53 is released after the load receiving platform 2 is in the standing posture, the standing lock device 17 controls the fall of the load receiving table 2 from the standing posture, so that the grounding in the standing posture is performed. It is possible to safely remove the load receiving platform 2 in the position.

Moreover, since most of the load of the load receiving stand 2 is supported on the ground, it can be reduced that this load acts on the hinge shaft 8c via the second bracket portion 8b. Therefore, the hinge shaft 8c can be easily extracted from the first and second bracket portions 8a and 8b.
Further, since the load receiving platform 2 in the standing posture can be lowered from the upper position to the grounding position without interfering with the loading platform 11, the load receiving platform 2 is lowered from the retracted state to the ground contact position without raising or lowering the load receiving platform 2. be able to. For this reason, when removing the cradle 2 by moving it from the retracted state to the grounding position, the removal work can be performed quickly.
In addition, the restriction by the standing lock device 17 is released in accordance with the operation of rotating the arm body 7 upward in a state where the connection of the load receiving platform 2 by the connecting means 53 is released, that is, the operation of storing the arm body 7 on the loading platform 11. Therefore, the work for removing the load receiving platform 2 at the ground contact position can be quickly performed.

  As described above, according to the load receiving platform lifting apparatus 1 according to the embodiment of the present invention, the load receiving platform 2 can be connected to and disconnected from the support 7 by the connecting means 53. By releasing the connection of the load receiving table 2 by the means 53, the load receiving table 2 can be detached from the support body 7. For this reason, it can prevent that the loading space of the load on the loading platform 11 decreases. This is particularly effective when the cargo vehicle C is a light truck with a relatively small loading space on the loading platform 11.

  In the present embodiment, the load receiving platform 2 is removed in the standing position at the upper position and the contact position, but can be removed in the horizontal position. When removing the load receiving platform 2 in the horizontal position at the ground contact position, the load receiving platform 2 will not fall down when the connection by the connecting means 53 is released, so that the work for removing the load receiving platform 2 at the ground contact position can be performed safely. .

FIG. 17 is a perspective view of the connecting means of the load receiving table lifting device according to the second embodiment of the present invention. Hereinafter, this embodiment will be described in detail. In addition, among this embodiment, what is the same structure as 1st embodiment is shown with the same code | symbol as 1st embodiment.
The connection means 70 of the load receiving platform lifting apparatus according to the second embodiment is different from the first embodiment in the configuration of a holding portion 71 for holding the load receiving stand 2 in a connected state. The holding portion 71 includes a bolt 72 for fixing the locking member 50 of the hinge shaft 8c to the end portion of the first bracket portion 8a. The bolt 72 passes through a bolt hole 73 formed in the locking member 50 and is fixed to a screw hole 74 formed in the first bracket portion 8a. The hinge shaft 8c is connected to the first and second bracket portions 8a, 8b is restricted. Thereby, the load receiving platform 2 is held by the holding portion 71 in a state of being connected to the support body 7 via the hinge portion 8. Accordingly, the bolt 71 is removed from the screw hole 73 and the hinge shaft 8c is removed from the first bracket portion 8a in a state where the load receiving platform 2 is in the upright position or horizontal position at the upper position or in the upright position or horizontal position in the grounding position. In the axial direction (in the direction of arrow L in FIG. 17), the connection between the load receiving platform 2 and the support 7 by the connecting means 70 is released, and the load receiving platform 2 can be removed from the support 7.

FIG. 18 is a perspective view of the connecting means of the load receiving table lifting apparatus according to the reference example . Hereinafter, this reference example will be described in detail. In addition, in this reference example , what has the same configuration as the first embodiment is denoted by the same reference numeral as the first embodiment.
Coupling means 80 according to the reference example includes a connection portion 81 for connecting the receiving platform 2 to the supporting body 7, and a holding portion 82 for holding the receiving platform 2 in coupled state. The connecting portion 81 includes an engaging member 83 fixed to one side surface of the cargo receiving platform 2 and an engaged member 84 fixed to the lower surface of the support body 7. Both the engaging member 83 and the engaged member 84 are formed by square pipes, and the engaging member 83 is engaged with the engaged member 84 while being inserted into the engaged member 84. For this reason, in this reference example , the load receiving platform 2 is always fixed in a horizontal posture with respect to the support 7, and the state in which the load receiving platform 2 is raised to the upper position in the horizontal posture is the retracted state (running state).

  The holding portion 82 has a bolt 85 for fixing the engaging member 83 in a state in which the engaging member 83 is engaged with the engaged member 84. The bolt 85 is formed on the engaged member 84 in the engaged state. The bolt hole 84a is fixed to a screw hole 86 formed in the engagement member 83 through the bolt hole 84a. Accordingly, the bolt 85 is removed from the screw hole 86 and the engaging member 83 is pulled out from the engaged member 84 in a state where the load receiving device elevating device is in the upper position (running state) or the grounding position in the horizontal posture, thereby allowing the load receiving table to be removed. 2 can be removed from the support 7.

In addition, the load receiving platform lifting / lowering device of the present invention is not limited to the above-described embodiments, and may have other forms within the scope of the present invention. For example, in the first embodiment, the connecting means 53 can release the connection of the load receiving platform 2 in both the upper position and the ground contact position, but the connection is released at either position. You may be able to do it.
In the first embodiment, the pin member 51 is secured by the ring portion 51d. However, a screw portion is formed in the pin main body portion 51c of the pin member 51, and the screw hole formed in the hinge shaft 8c. It may be fixed.
Furthermore, in said 1st embodiment, although the hinge axis | shaft 8c is detachable with respect to each bracket part 8a, 8b as the connection means 53 which connects and disconnects the load receiving stand 2 with respect to the support body 7, The one bracket portion 8a may be detachable from the support body 7, or the load receiving platform 2 may be detachable from the second bracket portion 8b.

Moreover, in said 1st embodiment, when removing in the state which stood the load receiving stand 2 in the earthing | grounding position, it is lowered | hung from the upper position to the earthing | grounding position in the standing attitude state, , When it interferes with the loading platform 11, the loading platform 2 is lowered to a position that does not interfere with the loading platform 11 in a horizontal posture at the upper position, and then lowered to the grounding position with the loading platform 2 in a standing posture. Good.
Moreover, although each said embodiment demonstrated the case where the loading platform raising / lowering apparatus 1 was installed in the rear left end of the loading platform 11, and the loading platform 2 descend | falls behind a vehicle, the attachment position may be another part. For example, you may attach the load receiving device raising / lowering apparatus 1 so that the load receiving stand 2 may descend to the side of a vehicle.
In each of the above embodiments, the cylinder 5 is attached between the arm body 4 and the support body 7, but it is also possible to attach it between the base bracket 3 and the arm body 4.

DESCRIPTION OF SYMBOLS 1 Cargo stand elevating device 2 Cargo stand 3 Base part 4 Arm body 7 Support body 8 Hinge part (connection part)
11 Loading platform 17 Standing lock device (regulation means)
53 Connecting means C Cargo vehicle (vehicle)
U Device body

Claims (11)

A loading platform lifting device mounted on a loading platform of a vehicle,
An apparatus main body having a base portion mounted on the loading platform, an arm body supported by the base portion so as to be vertically rotatable, and a support body supported by being vertically movable by the arm body;
A load receiving platform that can be moved up and down between a grounding position for grounding by raising and lowering the support body of the apparatus main body and an upper position positioned above the loading platform;
A connecting means for connecting the load receiving table to the support and capable of releasing the connection ;
The connecting means includes a connecting portion that connects the load receiving table to the support body so that the load receiving table can be raised and lowered in a horizontal posture and an upright posture, and the main body of the apparatus in the state in which the load receiving stand is in the upright posture. It is arrange | positioned in the position which can cancel | release the said connection, without interfering with .   The load receiving device lifting / lowering device according to claim 1, wherein the connecting means is disposed at a position where the connection can be released without interfering with the device main body in a state where the load receiving stand is in the upper position. 3. The control device according to claim 2, further comprising a restricting unit that restricts the load receiving table from falling from the standing posture when the connection by the connecting device is released in a state where the load receiving table is in the upright position. Loading platform lifting device. The load receiving device lifting / lowering device according to claim 1 , wherein the connecting means is disposed at a position where the connection can be released without interfering with the device main body in a state where the load receiving stand is in the grounding position . The connecting portion, according to claim 1 which connects the receiving platform so as to be lowered from the upper position without to the ground position to the receiving platform from interfering with the loading platform in the state of the standing posture Loading platform lifting device.   6. The apparatus according to claim 4 or 5, further comprising a restricting means for restricting the load receiving base from falling from the standing posture when the connection by the connecting means is released in a state where the load receiving stand is in the grounding position in the standing posture. The load receiving table lifting device described in 1.   The restricting means restricts the falling of the stand from the standing posture by engaging the load receiving table with the support body, and the support body while rotating the arm body upward and leaving the load receiving table at the ground contact position. The load receiving table elevating device according to claim 6, wherein the engagement is released by raising a body. An apparatus main body having a base portion mounted on a loading platform of a vehicle, an arm body supported by the base portion so as to be rotatable up and down, and a support body supported so as to be moved up and down by the vertical rotation of the arm body And means for connecting to the support so that it can be raised and lowered between an upper position above the loading platform and a grounding position that contacts the ground by raising and lowering the support, and can be raised and lowered in a horizontal posture and a standing posture. A cradle connected via the cradle, and a method of removing the cradle from the cradle lifting device comprising:
Releasing the connection of the load receiving table by the connecting means in a state where the load receiving table is in the standing posture at the upper position;
The method of removing the load receiving platform of the load receiving platform lifting apparatus, wherein the load receiving platform is removed from the support. An apparatus main body having a base portion mounted on a loading platform of a vehicle, an arm body supported by the base portion so as to be rotatable up and down, and a support body supported so as to be moved up and down by the vertical rotation of the arm body And means for connecting to the support so that it can be raised and lowered between an upper position above the loading platform and a grounding position that contacts the ground by raising and lowering the support, and can be raised and lowered in a horizontal posture and a standing posture. A cradle connected via the cradle, and a method of removing the cradle from the cradle lifting device comprising:
Lowering the load receiving table by rotating the arm body downward to ground the load receiving table in the standing posture ,
Release the connection of the cargo cradle by the connecting means at the ground contact position,
The method of removing the load receiving platform of the load receiving platform lifting apparatus, wherein the load receiving platform is removed from the support. An apparatus main body having a base portion mounted on a loading platform of a vehicle, an arm body supported by the base portion so as to be rotatable up and down, and a support body supported so as to be moved up and down by the vertical rotation of the arm body And means for connecting to the support so that it can be raised and lowered between an upper position above the loading platform and a grounding position that contacts the ground by raising and lowering the support, and can be raised and lowered in a horizontal posture and a standing posture. A cradle connected via the cradle, and a method of removing the cradle from the cradle lifting device comprising:
Lowering the load receiving table to the grounding position by rotating the arm body downward from a state where the load receiving table is in the standing position at the upper position,
Release the connection of the cargo cradle by the connecting means at the ground contact position,
The method of removing the load receiving platform of the load receiving platform lifting apparatus, wherein the load receiving platform is removed from the support. An apparatus main body having a base portion mounted on a loading platform of a vehicle, an arm body supported by the base portion so as to be rotatable up and down, and a support body supported so as to be moved up and down by the vertical rotation of the arm body And means for connecting to the support so that it can be raised and lowered between an upper position above the loading platform and a grounding position that contacts the ground by raising and lowering the support, and can be raised and lowered in a horizontal posture and a standing posture. A load receiving base connected via a support base, and a restricting means for restricting falling from the standing posture by engaging the load receiving base with the support body. A method of removing,
Lowering the load receiving table to the grounding position by rotating the arm body downward from the state where the load receiving table is in the standing posture,
Releasing the connection of the load receiving table by the connecting means at the ground contact position and restricting the falling of the standing position by engaging the load receiving table with the support by the restricting means;
The arm body is rotated upward to raise the support body while leaving the load receiving base in the grounding position, thereby releasing the engagement by the restricting means and removing the load receiving base from the support body. The method of removing the load receiving table of the load receiving table lifting device.

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