JP6824820B2 - Stopper device in vehicle loading platform lifting device - Google Patents

Description

The present invention is a wheel of a cart mounted on a loading platform in a loading platform elevating device provided on a vehicle body frame of a vehicle such as a freight vehicle and for loading and unloading luggage between a loading box on the body frame and the ground. It relates to a stopper device that catches such a thing on a cargo receiving table and prevents it from falling.

Conventionally, in a load receiving platform elevating device provided at the rear of a vehicle body of a freight vehicle, a stopper and an operation lever for projecting and retracting the stopper are provided on the loading platform, and when the stopper is projected, it is placed on the loading platform. A stopper device that is brought into contact with the wheels of a mounted cart to catch the cart and prevent its fall is known (see, for example, Patent Document 1).

Japanese Patent No. 40733738

By the way, the stopper of the stopper device is made to stand up from the load receiving table to receive the load such as the wheels of the cart placed on the load receiving table and prevent the stopper from falling, and the stopper is from the load. Since the load acts, it may be deformed or damaged, and when the stopper is retracted, a part of it protrudes from the receiving surface of the receiving platform, which hinders the loading of the load on the receiving platform. However, in the known one, the stopper does not take measures against the problem.

The present invention has been made in view of such circumstances, and the stopper of the stopper device itself can secure sufficient strength so as not to be deformed or damaged, and when it is stored, the receiving surface of the receiving platform can be secured. It is an object of the present invention to provide a stopper device in a new vehicle loading platform elevating device so as not to protrude from the vehicle.

In order to achieve the above object, the invention of claim 1 is provided in a vehicle body frame on which a packing box is mounted so that a loading platform can be raised and lowered via an elevating mechanism, and the loading platform is horizontally connected to the loading platform of the packing box. A flat portion that is lifted and lowered between the ground and has a flat flat surface on its upper surface, and a slope portion that extends integrally to the trailing edge of this flat portion and has a slope surface whose upper surface inclines downward in a downward slope. and a posture changeable stopper and storage positions stored in the operating position and receiving platform erected on the upper surface of the said receiving platform is located on the slope portion, the stopper, than the tip proximal end The upper surface of the stopper, which is a surface through which the load passes, is the tip of the stopper , which is provided on the cradle so as to be located forward, and a portion on the base end side thereof is rotatably fixed to the cradle. It is characterized by being curved to the opposite side to the lower surface that receives a load when standing up with respect to the straight line connecting the base ends.

In order to achieve the above object, in the invention of claim 1, the stopper is a virtual line extending from the upper surface of the flat portion of the cradle toward the tip of the cradle when it is retracted. It is characterized by being located below.

In order to achieve the above object, in the invention of claim 1 or 2, the upper surface of the stopper is convex upward so as to be along the upper surface of the slope portion of the cradle. It is characterized by being curved.

According to the invention of claim 1, the stopper is provided on the loading platform so that the tip thereof is located in front of the proximal end, and the portion on the proximal end side is rotatably fixed to the receiving platform. Since the upper surface of the invention is curved to the opposite side of the lower surface , sufficient strength can be secured by itself, and even if an excessive load is applied when standing up, it is prevented from being deformed or damaged. and, it is possible to achieve the intended function over the long term.

According to the invention of claim 2, when the stopper is retracted, it does not protrude upward from the upper surface of the cradle and does not hinder the loading of the load on the cradle.

According to the invention of claim 3, since the upper surface of the stopper is curved upward so as to be along the upper surface of the slope portion of the load receiving table, the upper surface of the load receiving table can be a continuous curved surface. The smooth loading of luggage onto the cradle is guaranteed.

Rear side view of a freight vehicle equipped with the device of the present invention 2 arrow view enlarged plan view of FIG. Enlarged view of a part of the virtual line enclosure in Fig. 2 Sectional view taken along line 4-4 of FIG. Enlarged view of a part of the virtual line enclosure in Fig. 2 Sectional view taken along line 6-6 of FIG. Sectional view taken along line 7-7 of FIG.

Embodiments of the present invention will be specifically described below with reference to the accompanying drawings.

This embodiment is a case where the stopper device of the present invention is implemented in a load receiving platform elevating device provided with an underfloor retractable load receiving table.

FIG. 1 is a rear side view of a freight vehicle equipped with the device of the present invention. In FIG. 1, a cargo box 2 having a loading platform 3 is mounted on a body frame 1 of the freight vehicle, and the rear surface of the cargo box 2 is mounted. The doorway 4 opened and closed by a rear door (not shown) is opened. At the rear of the vehicle body frame 1, a load receiving platform elevating device that can be stored under the floor of the packing box 2 is supported so as to be movable in the front-rear direction. A support frame 5 is movably supported in the front-rear direction of the vehicle body frame 1 at the rear portion of the vehicle body frame 1. The bases of the main arm 6 and the sub-arm 7 are pivotally supported on the support frame 5 so as to be swingable in the vertical direction, and the base frame 9 of the loading platform 8 described later is connected to the tips of the arms 6 and 7. .. Further, both ends of the lifting hydraulic cylinder 10 are connected between the support frame 5 and the tip of the main arm 6. The loading platform 8 can be lifted and lowered as shown by the solid line and the chain line in FIG. 1 by the expansion and contraction operation of the lifting hydraulic cylinder 10, and the loading platform 8 in the raised position is substantially the same surface as the loading platform 3 of the loading box 2. In addition, the loading platform 8 in the descending position as shown by the chain line can be stored under the floor of the packing box 2.

The loading platform 8 comprises a base-side loading platform 8A integrally provided on the support frame 5 and a front-side loading platform 8B foldably connected to the free end thereof by a hinge shaft 11. FIG. As shown in the above, the front side cradle 8B can be inverted and folded so as to overlap the base side cradle 8A around the hinge shaft 11.

Since the lifting device of the loading platform 8 and the storage device of the loading box 2 under the floor are conventionally known, detailed description thereof will be omitted.

As shown in FIG. 1, the load receiving table 8 is composed of a base side load receiving table 8A and a tip side loading platform 8B foldably connected to the tip portion by a hinge shaft 11, and is entirely extruded from an Al alloy. The left and right side edges thereof are bordered by the edging member 12.

A pair of stopper devices ST are provided on the left and right sides of the vertical center line CC of the vehicle in the portion near the rear end of the front side load receiving table 8B, and each stopper device ST is mounted on the load receiving table 8. Accurately catch the placed luggage, especially the wheels of the cart, and prevent it from falling while the loading platform 8 is being raised and lowered.

Since the paired stopper devices ST have the same structure, one of them will be described in detail below.

As shown in FIGS. 1 and 4, the front end side loading platform 8B includes a flat portion F forming the main body portion thereof and a slope portion S integrally continuous with the rear end (tip) of the flat portion F. The upper surface of the flat portion F is formed on a flat surface, whereas the upper surface of the slope portion S is formed on an inclined surface having a downward slope from the front end to the rear end thereof, and the inclined surface is slightly formed. It has a convex shape that is convex upward, and unevenness 28 for preventing slippage is formed therein.

A band-shaped stopper accommodating recess 16 is formed in the middle portion of the slope portion S of the front end side load receiving table 8B in the left-right direction, and the stopper 15 according to the present invention is accommodated in the stopper accommodating recess 16. .. As shown in FIG. 3, the slope portion S of the front end side load receiving table 8B is provided with an operation lever 56, which will be described later, for standing the stopper 15 in the upright position.

As shown in FIG. 4, at the bottom of the stopper accommodating recess 16 near the rear portion, a pivot shaft 17 having a superior arc-shaped cross section is integrally formed over the entire length of the pivot shaft 17, and the pivot shaft 17 is formed in the longitudinal direction of the stopper 15. A concave groove 18 having a superior arc-shaped cross section formed on one side is rotatably fitted, and the stopper 15 is provided around the pivot shaft 17 with a lying position (storage position) shown by a solid line in FIG. It can rotate between the standing position (operating position) shown by the chain line. Then, when the stopper 15 is erected as shown by a chain line in FIG. 4, the tip thereof can receive a load such as a wheel W of a cart on the load receiving table 8.

The stopper 15 has sufficient strength so as not to be deformed or damaged by the load from the load, and is formed so as not to hinder the loading and unloading of the load on the loading platform 8. Has been done.

As shown in FIG. 4, the upper surface U of the stopper 15 (the surface through which the load passes upward facing the load) is the tip a of the stopper 15 (when the cart on which the load is loaded is loaded onto the loading platform 8). , A straight line passing from the base end b (the point at which the wheel W of the cart at the stopper 15 at the storage position ends to hit when the cart is lowered from the loading platform 8 to the ground). It is formed on a curved surface r that is convexly curved to the opposite side of the lower surface D (the surface that receives a force when the stopper 15 stands up, the surface that faces downward at the storage position of the stopper 15) with respect to l. The surface r reaches the base of the stopper 15, and a thick portion 15a is formed at the base of the stopper 15 in cooperation with the radius R at the base end of the lower surface of the stopper 15. As a result, the stopper 15 can increase the strength against a load from the wheel W of the cart acting on the lower surface D of the stopper 15 when it stands up (FIG. 4, chain line), and can reduce its bending. Further, since the upper surface U of the upright stopper 15 approaches parallel to the direction in which the force is received, it is possible to prevent the stopper 15 from being deformed so as to warp backward. An uneven surface 15b for preventing slip is formed on the upper surface U of the stopper 15.

Further, when the stopper 15 is in the retracted position (FIG. 4, solid line position), the upper surface U of the stopper 15 makes the upper surface of the flat portion of the front end side load receiving base 8B in the tip direction (slope portion S direction). It is located below the extended virtual line L. As a result, the stopper 15 does not have a portion higher than the flat portion F of the front side load receiving table 8B, and the stopper 15 does not hinder the movement of the load onto the load receiving table 8.

The stopper accommodating recess 16 is formed with a receiving surface 16a for receiving the lower surface D of the tip portion of the stopper 15. When the stopper 15 falls down to the storage position as shown by a solid line in FIG. 4, the receiving surface 16a is formed. The lower surface of the tip of the stopper 15 is brought into contact with the stopper 15. The rubber cushion 19 having a circular cross section fitted to the receiving surface 16a alleviates shock and impact noise at the time of contact. Further, a rubber cushion 20 is also provided at the rear end corner of the stopper accommodating recess 16, and when the stopper 15 is rotated upright, its base abuts on the rubber cushion 20 to generate a shock and impact sound at that time. ease.

As shown in FIGS. 2 and 4, in the space of the stopper accommodating recess 16, an urging means 21 made of a U-shaped bent spring rod for urging the stopper 15 to an upright position is housed. .. The base end of the urging means 21 is a hook-shaped lower engaging recess 24 formed on the bottom wall of the stopper accommodating recess 16, and the free end thereof is a hook-shaped upper engaging recess formed on the back surface of the stopper 15. Each of them is engaged with 25, and the elastic force of the spring rod, that is, the urging means 21, urges the stopper 15 to the standing position (the chain line position in FIG. 4).

On both sides of the stopper accommodating recess 16 in the left-right direction, paired locking means LO, LO for locking or unlocking the stopper 15 at a prone position (storage position) are provided. Since the paired locking means LO and LO have the same structure, the structure of the locking means LO on the left side will be described below mainly with reference to FIGS. 3 to 7.

The locking means LO is composed of an engaged member 30 fixed to the back surface of the stopper 15, an engaging member 31 that can engage and disengage from the engaged member 30, and an operating mechanism 32 that operates the engaging member 31. It is configured. As shown in FIG. 6, the engaged member 30 is integrally hung on a support member 33 bolted to the back surface of the stopper 15 to form a U-shape. On the other hand, the engaging member 31 is formed in a rod shape having a square cross section, having an inclined guide surface 31a descending forward on the upper surface of a tip portion that can engage and disengage with the engaged member 30 at the tip end. The operating mechanism 32 is configured so that the engaging member 31 can be manually slid back and forth with respect to the engaged member 30 to engage and disengage the engaging member 31. A base 36 is fixed to the bottom plate 35 under the stopper accommodating recess 16, and a hollow square tube member 38 is fixed to the upper surface of the base 36 near the engaged member 30, and the square tube member 38 is described. The engaging member 31 is fitted and inserted so as to be slid back and forth with respect to the engaged member 30. In the square tube member 38, a first urging means 40, that is, a first compression coil spring is contracted between the rear end wall and the rear end of the engaging member 31, and the first urging means. The elastic force of 40 is always urged in the direction in which the engaging member 31 protrudes, that is, in the direction in which it engages with the engaged member 30. Further, a guide rod 41 is inserted into the square cylinder member 38 along the central axis of the square cylinder member 38 through a through hole opened in the rear end wall, and the guide rod 41 is inserted into the compression coil. A first urging means 40 made of a spring is inserted and slidably fitted into a dead-end guide hole 43 formed along the central axis of the engaging member 31. Further, an elongated hole 44 is bored in the intermediate portion of the engaging member 31 along the longitudinal direction thereof, and an engaging pin 46 fixed laterally in the middle of the guide rod 41 is slidably formed in the elongated hole 44. Engaged. Therefore, as shown in FIGS. 6 and 7, the engaging member 31 is forward, that is, covered until the engaging pin 46 engages with the rear end of the elongated hole 44 by the elastic force of the first compression coil spring 40. It is urged so as to project toward the engaging member 30. A large-diameter boss portion 41a is integrally formed at the rear end of the guide rod 41 projecting rearward from the square tube member 38, and the end surface of the boss portion 41a is the second urging means described later. The position of the guide rod 41 is regulated by abutting the rear end surface of the square tube member 38 by the elastic force of the second compression coil spring 54 (the spring force is larger than that of the first compression coil spring 40). The tip of the operating rod 48 made of a long bolt is screwed onto the boss portion 41a at the rear end of the guide rod 41 on the same axis as the guide rod 41, and is integrally connected via the length adjusting mechanism 49. Will be done. The length adjusting mechanism 49 is formed in a female screw hole 49a formed in the boss portion 41a, a male screw 49b formed in one end of the operating rod 48 and screwed into the female screw hole 49a so as to be adjustable in length, and the male screw 49b. It is composed of a nut 49c that is screwed and abutted against the outer end of the boss portion 41a.

As shown in FIGS. 5 and 6, the operating rod 48 extends beyond the stopper 15 to the bottom of the operation frame 13 on the side edge of the load receiving base 8, and the extension portion is a sleeve 50 fitted therein. It is slidably supported through the bearing 51 fixed to the base 36 via the bearing 51. The outer end of the sleeve 50 is widened and engaged with the head of the outer end of the operating rod 48 made of a long bolt by the elastic force of the second urging means, that is, the second compression coil spring 54. The actuating rod 48 and the sleeve 50 can be integrally moved outward (to the left in FIG. 6). A second urging means having a larger spring force than the first urging means 40 is provided between the spring seat 53 into which the operating rod 48 is fitted and seated on the nut 49c and the edge of the bearing 51. That is, the second compression coil spring 54 is contracted, and the second compression coil spring 54 projects the engaging member 31 via the operating rod 48 and the guide rod 41 (right direction in FIG. 6). It is urging the bullets.

A lever sleeve 57 to which an operating lever 56 as an operating member extending upward is integrally provided on the outer periphery of the sleeve 50 between the end edge of the bearing 51 and the operating rod 48 is integrally provided on the outer end portion of the base 36. The operation panel 58 formed in a gate shape is fixed so as to surround the operation lever 56, and the upper surface of the operation panel 58 is passed through the opening of the operation frame 13 fixed to one side of the front side load receiving table 8B. A guide groove 60 is formed on the upper surface of the guide groove 60, which is exposed to the outside, and the operation lever 56 penetrates through the guide groove 60. It can be operated from above.

In the guide groove 60, the operating lever 56 is locked to the unlocked position (retracted position of the engaging member 31) against the elastic force of the first and second compression coil springs 40 and 54. On the side opposite to the 1 groove portion 60a and the 1st groove portion 60a, the operating lever 56 is locked by the elastic force of the 1st and 2nd compression coil springs 40 and 54 (advance position of the engaging member 31). ), And a second groove portion 60b having an axial length that allows movement to the unlocked position is formed, and further straddles between the first groove portion 60a and the second groove portion 60b to hold the operation lever 56. An inclined cam surface 60c is formed between the grooves 60a and 60b, and one end of the inclined cam surface 60c faces the inside of the second groove portion 60b.

As shown in FIG. 5, the operation lever 56 is formed of a rectangular cylinder long in the lateral direction, and a rectangular first operation surface 56a is formed on the upper end thereof and a second operation surface 56b is formed on one side surface thereof. ing. When the operating lever 56 is in the locked position, the lower end of the first operating surface 56a engages with the step portion s formed on the load receiving base 8B and is slightly inclined downward in the direction facing the upper surface U of the stopper 15 ( FIG. 5, an inclination angle θ) with respect to the vertical line, and the upper half portion thereof protrudes above the upper surface of the front side load receiving platform 8B. Therefore, it becomes easier for the worker on the load receiving table 8 to kick up the first operation surface 56a with the foot f, and the operation lever 56 is released from the lock position (FIG. 5, solid line position) to the unlock position (FIG. 5, chain line position). ) Can be easily operated. Further, since the first operation surface 56a is formed in a rectangular shape long in the lateral direction, the operator keeps the foot f in contact before and after switching from the lock position to the unlock position of the operation lever 56. It is possible to prevent the foot f of the worker from coming off from the first operation surface 56a of the operation lever 56 during the switching operation.

When the freight vehicle is in a running state and the cargo receiving platform 8 is in the retracted position, the stopper 15 provided on the front side cargo receiving platform 8B is in the retracted position, that is, in the prone position, and is in the locked position. Is held in. That is, as shown in FIGS. 3 and 6, the operating lever 56 is located in the second groove portion 60b, and the engaging member 31 is provided with the operating rod 48 and the guide by the elastic force of the first and second compression coil springs 40 and 54. It is projected and urged to the engaging position via the rod 41, which engages with the engaged member 30 on the stopper 15 side, and the stopper 15 is laid down to the retracted position.

Next, when the freight vehicle is stopped and the luggage in the packing box 2 is unloaded on the ground, the loading platform 8 is raised to the same level as the loading platform 3 of the packing box 2 as shown by the solid line in FIG. The part-side cargo receiving table 8B is manually rotated to the overhanging position. Next, when the second operating surface 56b of the operating lever 56 in the retracted position is moved outward by kicking it with a foot or the like, the operating lever 56 repels the first and second compression coil springs 40 and 54. It moves outward (left side of FIGS. 2 and 3) against the force. As a result, the operating rod 48 and the guide rod 41 retract against the elastic force of the first and second compression coil springs 40 and 54, and the engaging member 31 is retracted as shown in FIG. 6, chain line. Then, it comes off from the engaged member 30. As described above, when the stopper 15 is held in the unlocked position, the stopper 15 is rotated upward and held in the upright position by the urging force of the urging means 21 as shown by the chain line in FIG. .. At this time, since the second operating surface 56b of the operating lever 56 is engaged with the inclined cam surface 60c of the guide groove 60, the operating lever 56 is automatically driven by the urging force of the first and second compression coil springs 40 and 54. Is returned to the locked position.

Next, the load on the loading platform 3 is transferred to a cart (not shown), moved onto the loading platform 8, and the loading platform 8 is lowered by the operation of the loading platform lifting device. At this time, as shown by the chain line in FIG. 4, the wheel W of the cart abuts on the lower surface D of the tip end portion of the standing stopper 15 to prevent the cart from falling from the tip end portion of the loading platform 8. Can be done. When the loading platform 8 descends to the ground, it swings to the storage position as shown in FIG. 4 by stepping on the protruding stopper 15 with a foot. At this time, the engaged member 30 under the stopper 15 is pressed against the inclined guide surface 31a of the engaging member 31 at the lock position (protruding position), and the axial component force of this pressing force is applied to the engaging member 31. As a result, the engaging member 31 slides in the retracting direction against the urging force of the first and second compression coil springs 40 and 54, so that when the engaged member 30 moves below the engaging member 31, The engaging member 31 released from the pressing force of the engaged member 30 slides forward in the engaging direction by the urging force of the first and second compression coil springs 40 and 54, and is engaged as shown in FIG. It can be engaged with the engaging member 30. As a result, the stopper 15 becomes substantially the same surface as the upper surface of the front side load receiving table 8B, and the cart on the load receiving table 8 can be lowered to the ground without any trouble.

Next, when loading the load on the ground onto the loading platform 3 of the loading box 2, the first operating surface 56a of the operating lever 56 is kicked with a foot from the base side to the tip side of the loading platform 8. , The operating lever 56 is made to stand up and swing. Then, the operating lever 56 moves along the inclined cam surface 60c of the guide groove 60, whereby the engaging member 31 retracts from the locked position to the unlocked position and is held at that position. As a result, the stopper 15 is held in the upright position again by the elastic force of the torsion spring 23.

Next, the load on the ground is placed on the cart and moved on the loading platform 8. At this time, when the wheel W of the cart gets over the stopper 15 against the elastic force of the urging means 21, the stopper 15 is rotated upward to the standing position again by the elastic force of the urging means 21. The cart can be locked on the cradle 8. Therefore, even if the operator accidentally releases his / her hand from the cart, the cart is prevented from returning to the ground.

Further, when the cart on the loading platform 8 is pushed toward the packing box 2 and the wheel W steps over the stopper 15, the stopper 15 is held in the protruding position again. After that, the loading platform 8 can be raised until it is substantially flush with the loading platform 3 by the operation of the loading platform lifting device, and the cart can be moved on the loading platform 3. At this time, since the wheels W of the cart are in contact with the tip of the lower surface of the stopper 15, the cart is prevented from falling from the loading platform 8.

When the loading / unloading work described above is completed, the first operation surface 56a of the operation lever 56 is rocked by kicking it with a foot, and the second operation surface 56b of the operation lever 56 becomes the inclined cam surface of the guide groove 60. The operating rod 48 moves from the 60c to the second groove portion 60b, and the engaging member 31 slides from the retracting position (unlocking position) to the advancing position (locking) due to the urging force of the first and second compression coil springs 40 and 54. Position) is held. When the stopper 15 is stepped on from this state to rotate to the prone position, the engaged member 30 engages with the engaging member 31 as shown in FIG. 6, and as shown by the solid line in FIG. The stopper 15 is held at the storage position. Then, after the stopper 15 is retracted, the loading platform 8 is folded on the base side loading platform 8A by the retracting operation of the loading platform elevating device, and the front end side loading platform 8B is folded as shown by a chain line in FIG. It is stored under the floor of the packing box 2.

As described above, the stopper 15 moves the engaging member 31 forward or backward by rotating and sliding the operating lever 56 to engage and disengage the engaged member 30, and causes the stopper 15 to lie down in the retracted position. It can be erected in the operating position.

Therefore, the upper surface U of the stopper 15 is curved to the side opposite to the lower surface D which receives the load when standing up with respect to the straight line connecting the tip end a to the base end b, so that sufficient strength is secured by itself. Even if an excessive load is applied when standing up, the stopper will not be deformed or damaged, and the stopper can achieve the desired function for a long period of time.

Further, since the stopper 15 is located below the virtual line L extending from the upper surface of the flat portion F of the load receiving table 8 to the slope portion S side at the tip thereof when the stopper 15 is stored, the load receiving table 8 is stored when the stopper 15 is stored. It does not protrude upward from the upper surface of the slope and does not hinder the loading of luggage on the loading platform 8.

Further, since the upper surface of the stopper 15 is curved upward so as to be along the upper surface of the slope portion S of the front side load receiving table 8B, the upper surface of the front side load receiving table 8B shall be a continuous curved surface. This makes it possible to smoothly load the luggage onto the loading platform 8.

Although the examples of the present invention have been described above, the present invention is not limited to the examples, and various examples are possible within the scope of the present invention.

For example, the cradle of the cradle elevating device has been described as being retractable under the floor, but the cradle may be of an upright retractable type, a vertical elevating type, or another type. The stopper does not have to be curved over the entire area, and there may be a curved portion between the tip end and the base end of the upper surface of the stopper. Further, the top of the curve may protrude above the virtual line extending the flat portion of the loading platform toward the slope portion. Further, the curvature of the stopper may be different from the curvature of the slope portion of the loading platform. Further, although the upper surface of the stopper is curved to make it thicker, the lower surface thereof may also be curved.

The slope portion of the load receiving table and the upper surface of the stopper are formed with irregularities for preventing slipping, but the irregularities may not be present.

1 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Body frame 2 ・ ・ ・ ・ ・ ・ ・ ・ ・ Packing box 3 ・ ・ ・ ・ ・ ・ ・ ・ Cargo 8 ・ ・ ・ ・ ・ ・ ・ ・ Cargo F ・ ・····························································································・ Base end of slope part l ・ ・ ・ ・ ・ ・ ・ ・ ・ Straight line 15 ・ ・ ・ ・ ・ ・ ・ ・ Stopper U ・ ・ ・ ・ ・ ・ ・ ・ ・ Top surface D of slope part・ Underside of slope L ・ ・ ・ ・ ・ ・ ・ ・ ・ Virtual line

Claims (3)

The body frame (1) on which the packing box (2) is mounted is provided with a loading platform (8) that can be raised and lowered via an elevating mechanism, and the loading platform (8) is horizontally placed on the loading platform (2). A flat portion (F) having a flat surface whose upper surface is flat by being lifted and lowered between 3) and the ground, and a flat portion (F) extending integrally with the trailing edge of this flat portion (F), and the upper surface is inclined backward with a downward slope. Attitudes are set between a slope portion (S) having a slope surface, an operating position arranged on the slope portion (S) and standing on the upper surface of the load receiving table (8), and a storage position stored in the load receiving table (8). and a change can be a stopper (15),
The stopper (15) is provided on the loading platform (8) so that its tip (a) is located in front of the proximal end (b), and a portion on the proximal end side thereof is provided on the loading platform (8). The upper surface (U) of the stopper (15) , which is rotatably fixed to 8) and is the surface through which the load passes, is relative to the straight line (l) connecting the tip end (a) to the base end (b). A stopper device in a load receiving platform elevating device for a vehicle, which is curved to the side opposite to the lower surface (D) that receives a load when standing up. The stopper (15) is located below the virtual line (L) extending from the upper surface of the flat portion (F) of the load receiving table (8) toward the tip of the load receiving table (8) when the stopper (15) is stored. The stopper device in the loading platform elevating device for a vehicle according to claim 1, wherein the device is characterized by the above. The first aspect of the claim 1 is characterized in that the upper surface (U) of the stopper (15) is curved upward so as to be along the upper surface of the slope portion (S) of the load receiving table (8). Alternatively, the stopper device in the loading platform elevating device for the vehicle according to 2.