JP5137713B2 - Loading platform lifting device - Google Patents

Description

  The present invention relates to a load receiving platform lifting device that is mounted on a vehicle body such as a cargo vehicle having a cargo box and is used for loading and unloading cargo between the ground and the cargo box.

  In general, when the load receiving device elevating device is attached to a vehicle body such as a lorry equipped with a cargo box, a positioning operation for adjusting the attachment position of the load receiving device elevating device in the vehicle width direction and the vehicle front-rear direction is performed. That is, in a state where the load receiving platform of the load receiving platform elevating device is raised, the load receiving platform is disposed within the vehicle width in a state where the height of the load receiving surface on the upper surface of the load receiving platform is matched with the height of the floor surface of the cargo box. As described above, the mounting position of the load receiving table lifting device is adjusted in the vehicle width direction, and the load receiving table lifting / lowering is performed so that the clearance in the vehicle front-rear direction formed between the base end of the load receiving table and the rear end of the floor surface is reduced. An operation of adjusting the mounting position of the device in the longitudinal direction of the vehicle is performed.

Therefore, in the conventional load receiving platform lifting device, the mounting bracket temporarily fixed to the load receiving platform lifting device is fixed to the vehicle body (usually welding), and the load receiving platform lifting device is supported while the load receiving device lifting device is supported on the vehicle body. By adjusting the position of the platform elevating device in the vehicle width direction and the vehicle front-rear direction, the mounting position can be positioned (for example, FIG. 8 of Patent Document 1).
Specifically, as shown in FIG. 8 of Patent Document 1, a long hole extending in the vehicle front-rear direction is formed in the mounting bracket, and a long hole extending in the vehicle width direction is formed in the connecting bracket attached to the mounting bracket. Bolts are inserted into these long holes and secured with nuts, thereby temporarily fixing the load receiving table lifting device to the mounting bracket. Then, the mounting bracket is fixed to the vehicle body by welding, and the bolts and nuts are loosened by loosening the bolts and nuts in a state where the load receiving device lifting device is supported by the vehicle body, and the connection bracket is attached to the two long holes with respect to the mounting bracket. Within the range, the positioning operation is performed in the vehicle width direction and the vehicle longitudinal direction.

JP 2002-114116 A

However, in the load receiving platform lifting apparatus of Patent Document 1, after the positioning work in both the vehicle width direction and the vehicle front-rear direction is completed, the connection bracket is secured to the mounting bracket with bolts and nuts. The movement in the width direction and the vehicle front-rear direction is restricted at the same time. That is, when the connecting bracket is positioned in one direction of the vehicle width direction and the vehicle front-rear direction and then positioned in the other direction, the connecting member is not restricted from moving in the one direction. While moving in the other direction, it may move in one direction. For this reason, there was a problem that positioning work in both the vehicle width direction and the vehicle front-rear direction could not be performed accurately.
Therefore, the present invention has been made in view of such circumstances, and an object of the present invention is to provide a load receiving table lifting device capable of accurately performing a positioning operation of a mounting position attached to a vehicle body.

  In order to achieve the above object, a load receiving table lifting apparatus according to the present invention includes a load receiving table, a support base on which the load receiving table is mounted so as to be lifted, and an attachment that supports the support base and is fixed to a vehicle body. In the load receiving platform lifting apparatus, the position of the support base being adjustable in the vehicle width direction and the vehicle front-rear direction with respect to the mounting bracket, the bracket is interposed between the mounting bracket and the support base. An adjustment member, and the position of the support base relative to the adjustment member can be changed in any one of a vehicle width direction and a vehicle front-rear direction, and the support base is secured to the adjustment member at an arbitrary position. A first mounting means that enables the position of the adjustment member relative to the attachment bracket to be freely changeable in the other direction of the vehicle width direction and the vehicle front-rear direction; It is characterized in that it comprises a second attachment means for enabling lashing to dot and.

  According to the load receiving platform lifting apparatus having such a configuration, the support base is unidirectional by changing the position of the support base in one direction with respect to the adjustment member (first operation) and securing the support base by the first attachment means. It is secured to the adjustment member at the position adjusted to. Then, the support base and the adjustment member are moved in the other direction by changing the position of the adjustment member to which the support base is secured in the other direction with respect to the mounting bracket (second operation) and securing the adjustment member in the other direction. Secured to the mounting bracket at the adjusted position. That is, the support base portion can be independently secured to the position adjusted in one direction with respect to the mounting bracket and the position adjusted in the other direction. In this way, positioning work in the other direction can be performed in a state where one direction is secured, and the position in one direction does not change during position adjustment in the other direction. In doing so, positioning in both the vehicle width direction and the vehicle longitudinal direction can be performed accurately.

The second mounting means is configured such that the position of the adjustment member is freely changeable in the other direction with respect to the mounting bracket, and the support base is positioned in the one direction with respect to the mounting bracket together with the adjustment member. It is preferable that the mounting bracket has a connecting member that connects the adjusting member and the support base in a changeable state.
In this case, during the first operation, the support base can be repositioned in one direction with respect to the mounting bracket in a state where the support base and the adjustment member are connected to the mounting bracket by the connecting member. When the position of the support base is changed in one direction by the first operation, the load of the load receiving platform can be received by the mounting bracket. Further, during the second operation, the support base and the adjustment member can be repositioned together with the adjustment member in a state where the support base and the adjustment member are connected to the mounting bracket by the connecting member. When changing the position of the support base in the other direction, the load of the load receiving platform can be received by the mounting bracket. For this reason, since it is not necessary for the operator to adjust the position while supporting the load of the load receiving table, the positioning operation can be easily performed.

Further, the adjustment member in a state in which the position of the support base can be changed in the one direction with respect to the mounting bracket and the position of the support base in the other direction can be changed in the other direction. It is preferable to provide a regulation means for regulating this.
In this case, with the support base portion being changeable in one direction, the adjustment member restricts the position change of the adjustment member in the other direction, so the support base is arranged in one direction with respect to the mounting bracket and the adjustment member. It is possible to prevent the adjustment member from changing its position in the other direction with respect to the mounting bracket. As a result, positioning work in one direction of the support base can be easily performed, and positioning work in the other direction can be prevented from being erroneously performed.

The restricting means is disposed apart from the other direction and has a pair of adjustment bolts that can contact the mounting bracket or the vehicle body by being individually movable from both sides of the other direction. It is preferable.
In this case, since the pair of adjustment bolts are brought into contact with the mounting bracket or the vehicle body from both sides in the other direction, when positioning the support base in one direction, both adjustment bolts are brought into contact with the mounting bracket or the vehicle body. By doing so, the adjustment member can be prevented from moving in the other direction with respect to the mounting bracket. Thereby, it is possible to easily perform the positioning operation in one direction, and it is possible to prevent the positioning operation in the other direction from being erroneously performed.
In addition, since the pair of adjustment bolts can be moved separately to contact the mounting bracket or the vehicle body, when adjusting the adjustment member in the other direction together with the support base, one adjustment bolt is moved in the other direction. Then, the adjustment member can be finely adjusted in the other direction by releasing the contact with the mounting bracket or the vehicle body and moving the other adjustment bolt in the other direction in contact with the mounting bracket.

  According to the load receiving table lifting device of the present invention, when the load receiving table lifting device is attached to the vehicle body, the positioning operation in the vehicle width direction and the vehicle longitudinal direction can be performed accurately.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a side view of a truck equipped with a load receiving table lifting apparatus according to the first embodiment of the present invention, and FIG. 2 is a plan view of the load receiving table lifting apparatus shown in FIG.
[Overall configuration of cargo receiving platform lifting device]
First, the load receiving table lifting device that is the conveyance object of the present invention will be described in a state of being attached to a vehicle.
1 and 2, a cargo box 3 is mounted on a vehicle body 2 of a lorry 1, and a load receiving platform elevating device 4 is attached to a rear portion of the vehicle body 2. The load receiving table lifting / lowering device 4 can load / unload a load by moving the load receiving table 5 up and down between the ground and the floor surface 3 a of the packing box 3.

More specifically, the vehicle body 2 includes a pair of left and right chassis frames 6 extending in the vehicle front-rear direction, and a subframe 7 fixed on the chassis frame 6. A reinforcing frame 6a is fixed between the pair of left and right chassis frames 6 with a predetermined interval in the front-rear direction. The packing box 3 is mounted on the upper surface of the subframe 7.
Fixing portions 8a and 9a extending in the vertical direction of the pair of front and rear mounting brackets 8 and 9 are fixed to the outer surface 6b of the rear portion of each chassis frame 6 in the vehicle width direction by welding. Each of the mounting brackets 8 and 9 is formed with mounting portions 8b and 9b extending in the horizontal direction, and the mounting members 8b and 9b are provided with an adjusting member 10 made of a single flat plate extending in the vehicle front-rear direction. The support part 11a of the support frame 11 which supports the load of the said load receiving stand 5 is connected through this. The connection structure of the mounting brackets 8 and 9, the adjustment member 10, and the support frame 11 will be described in detail later.

A cross-sectional box-shaped cross member 12 extending in the vehicle width direction (left-right direction) is fixed to each support frame 11. An inner support bracket 13 and an outer support bracket 14 are fixed to the left and right ends of the cross member 12, and an upper end portion of a tilt link 15 is rotatably attached to the inner support bracket 13 by a pin 16. Yes. A base end portion of the upper arm 17 is rotatably attached to the tilt link 15 by a pin 18. A lower arm 19 is attached to the outer support bracket 14 by a pin 20 so as to be rotatable.
Further, a piston rod side end of an elevating cylinder 21 for vertically rotating the upper arm 17 and the lower arm 19 is attached to the tilt link 15 by a pin 22. Is attached to the tip of the upper arm 17 by a pin 23.
The support frame 11 and the cross member 12 constitute a support base A of the load receiving table lifting / lowering device 4.

As shown in FIG. 2, the upper arm 17 is welded to an arm main body portion 17a made of a pair of thin plates disposed on the left and right outer sides of the elevating cylinder 21 and an outer surface of a tip portion of the arm main body portion 17a. And a single-plate arm connecting portion 17b. The arm connecting portions 17 b arranged on the left and right sides of the vehicle body 2 are connected by a cylindrical connecting pipe 24.
3 is an enlarged side view of the front side of the upper arm 17 and the lower arm 19 of FIG. 1, and the upper arm 17 (arm connecting portion 17b) and the front portion of the lower arm 19 are provided by a pin 25 and a pin 26, respectively. The front link 27 is rotatably attached. Here, as shown in FIG. 1, the pins 18, 20, 25 and 26 are arranged so as to be the vertices of the parallelogram, and the upper arm 17 and the lower arm 19 are configured as parallel links.

A base portion 5 a of the load receiving platform 5 is rotatably attached to the upper portion of the front link 27 by the pin 25. In addition, the piston rod side end of the opening / closing cylinder 28 is attached to the front link 27 by a pin 29, and the cylinder tube side end of the opening / closing cylinder 28 is attached to the front back side of the load receiving platform 5 by a pin 30. It has been.
With the above configuration, when the open / close cylinder 28 is extended, the load receiving platform 5 is rotated counterclockwise about the pin 25, and is in an upright state indicated by a two-dot chain line in FIG. On the contrary, when the opening / closing cylinder 28 is retracted from the standing state of the load receiving platform 5, the load receiving platform 5 is rotated clockwise around the pin 25, and the load receiving platform 5 receives the load as shown by the solid line in FIG. 1. It will be in a lying state with the surface 5b horizontal.

In the above-mentioned lying state, the load receiving surface 5b of the load receiving platform 5 is at the same height as the floor surface 3a of the load box 3. By retracting the elevating cylinder 21 from this lying state, the upper arm 17 and the lower arm 19 rotate downward about the pin 18 and the pin 20, and the load receiving platform 5 is lowered while maintaining the horizontal state. When the load receiving platform 5 is lowered to the ground, the tilt link 15 rotates counterclockwise about the pin 16 and the tip of the load receiving platform 5 is tilted. As shown by the one-dot chain line in FIG. The tip of the ground is in the lowest position where it is grounded.
Further, when the elevating cylinder 21 is extended from the state of the lowest position, the upper arm 17 and the lower arm 19 rotate upward about the pins 18 and 20, and the load receiving platform 5 maintains a horizontal state. As shown by the solid line in FIG. 1, it rises to the state of the highest rise position at the same height as the floor surface 3 a of the packing box 3.

[Connection structure of mounting brackets 8 and 9, adjusting member 10 and support frame 11]
FIG. 4 is a side view showing a state in which the adjustment member 10 and the support frame 11 are connected to the mounting brackets 8 and 9, and FIG. 5 is a view showing the attachment brackets 8 and 9, the adjustment member 10 and the support in the connection state. FIG. 3 is an exploded plan view of the frame 11.
In FIG. 4, the support member 11 a of the support frame 11 is secured to the adjustment member 10 in a state of being connected by the first attachment means 31. In addition, the adjustment member 10 and the support portion 11a of the support frame 11 are secured to the attachment portions 8b and 9b of the attachment brackets 8 and 9 in a state of being connected by the second attachment means 32.

As shown in FIGS. 4 and 5, the first mounting means 31 is provided between the front and rear mounting brackets 8 and 9 at two positions in the front and rear, and is a long hole formed in the adjustment member 10 in the vehicle width direction. 33 and a first connecting member 34 that is inserted through the elongated hole 33 and connects the support portion 11a to the adjustment member 10 in the vertical direction.
The first connecting member 34 includes a first bolt 35 fixed to the support portion 11 a of the support frame 11 and a first nut 36 screwed into the first bolt 35. The threaded portion 35a of the first bolt 35 penetrates upward from below the support portion 11a, and the head portion 35b of the first bolt 35 is fixed to the back surface of the support portion 11a. Thereby, by tightening or loosening the first nut 36 from above the adjustment member 10, the support frame 11 can be easily secured and released.

As shown in FIGS. 4 and 5, the second mounting means 32 is provided at one location on the front mounting bracket 8 and at two locations on the front and rear sides of the rear mounting bracket 9. The formed first long hole 37 that is long in the vehicle front-rear direction, the insertion portion 38 that is a perfect circular hole formed in the adjustment member 10, and the second long hole 39 that is long in the vehicle width direction formed in the support portion 11a. And a second connecting member 40 as a connecting member for vertically connecting the support portion 11a to the mounting portions 8b and 9b of the mounting brackets 8 and 9 and transmitting the load of the support portion 11a to the mounting portions 8b and 9b. Yes.
The second connecting member 40 includes a second bolt 41, an upper spacer 42, two lower spacers 43, and a second nut 44 screwed into the second bolt 41. The nuts 44 are respectively fixed to a single plate nut plate 45. The lower spacer 43 serves to prevent the nut plate 45 from interfering with the first bolt 35.
The second bolt 41 is inserted into the upper spacer 42, the first long hole 37, the insertion portion 38, the second long hole 39, the lower spacer 43, and the nut plate 45 in order from the top, with the threaded portion 41a, The second nut 44 is screwed together. Thereby, the support frame 11 can be easily secured and released by tightening or loosening the second bolt 41 from above the mounting brackets 8 and 9.
The length of the second long hole 39 in the longitudinal direction is the same as the length of the long hole 33 in the longitudinal direction.

  With the above configuration, by loosening both the first nut 36 and the second bolt 41, the support frame 11 is held in a state of being supported by being suspended from the mounting brackets 8, 9, while the mounting brackets 8, 9 and the adjustment member 10 are held. Can be moved in the vehicle width direction within the range of the long hole 33 and the second long hole 39 with respect to the mounting brackets 8 and 9, and the front and rear of the vehicle together with the adjusting member 10 within the range of the first long hole 37 with respect to the mounting brackets 8 and 9. Can be moved in the direction.

At the rear of the upper surface of the adjusting member 10, there is provided a restricting means 46 for restricting the adjusting member 10 from moving in the vehicle front-rear direction with respect to the mounting brackets 8 and 9.
The restricting means 46 includes a pair of substantially U-shaped base portions 47 and 48 disposed in front and rear of the rear mounting bracket 9 on the upper surface of the adjustment member 10, and the base portions 47 and 48 are connected to the vehicle. It is comprised from the adjustment bolts 49 and 50 screwed together so that the movement to the front-back direction is possible. The head surfaces 49a and 50a of the pair of front and rear adjustment bolts 49 and 50 are respectively applied to the outer surfaces of the pair of front and rear reinforcing ribs 9c and 9d fixed to the rear mounting bracket 9 as shown in FIG. By making contact, the adjustment member 10 can be restricted from moving in the vehicle longitudinal direction with respect to the mounting brackets 8 and 9.
Further, of the pair of front and rear adjustment bolts 49, 50, one adjustment bolt 49 (50) is released from contact with the rib 9c (9d), and the other adjustment bolt 50 (49) is released from the rib 9d (9c). If the rotation adjustment is performed in a state where the adjustment member 10 is in contact with the mounting bracket 8, the position of the adjustment member 10 in the vehicle longitudinal direction with respect to the mounting brackets 8 and 9 can be finely adjusted within the range of the first long hole 37 (see FIG. 7). Since the front and rear adjustment bolts 49 and 50 are arranged on the front and rear sides of the rear mounting bracket 9, when adjusting the adjustment bolts 49 and 50, an adjustment tool such as a spanner is attached to the inner side. The adjustment work can be performed smoothly without interfering with the support bracket 13.

[Positioning work of lifting platform]
Next, the positioning operation when attaching the load receiving table elevating device 4 to the vehicle body 2 will be described. The positioning operation is performed in the vehicle longitudinal direction after the vehicle width direction positioning operation.
First, the mounting brackets 8 and 9 of the load receiving table lifting device 4 are fixed to the rear part of the vehicle body 2 by welding. At that time, the adjustment member 10 and the support frame 11 are secured to the mounting brackets 8 and 9 by the first bolt 35 and the first nut 36 and the second bolt 41 and the second nut 44 as shown in FIG. Temporarily stopped. The adjusting bolts 49 and 50 are both in contact with the ribs 9c and 9d of the rear mounting bracket 9.
After the mounting brackets 8 and 9 are fixed, the support frame 11 is positioned with respect to the mounting brackets 8 and 9 in the vehicle width direction, and the load receiving platform 5 is moved in the vehicle width direction as shown in FIG. It arrange | positions in the range of the length L.

Specifically, after releasing the contact of the adjusting bolts 49 and 50 together, the first nut 36 and the second bolt 41 are loosened to release the binding, and the support portion 11a of the support frame 11 is moved to the second bolt 41. And the second nut 44 are suspended from the mounting portions 8b and 9b of the mounting brackets 8 and 9 (see FIG. 6A). In this state, the adjustment bolts 49 and 50 are again brought into contact with the ribs 9c and 9d (see FIG. 6B), and then the support frame 11 is formed on the adjustment member 10 with the long holes 33 and the second long holes 39. It is moved within the range, and positioning work in the vehicle width direction is performed (see FIG. 5).
At that time, since the adjusting member 10 is connected to the mounting brackets 8 and 9 only by the first long hole 37 that is long in the vehicle front-rear direction, the movement in the vehicle width direction is restricted. Further, since the adjustment member 10 has the adjustment bolts 49 and 50 abutting against the ribs 9c and 9d, the adjustment member 10 is also restricted from moving in the vehicle longitudinal direction along the first long hole 37. Thereby, when performing the positioning operation of the support frame 11 in the vehicle width direction, the adjusting member 10 does not move in the vehicle width direction and the vehicle front-rear direction, so that the positioning operation can be easily performed. Further, since the adjustment member 10 does not move in the vehicle front-rear direction, it is possible to prevent the positioning operation in the vehicle front-rear direction from being performed by mistake.
After the support frame 11 is aligned at an appropriate position in the vehicle width direction, the first nut 36 is tightened to secure the support frame 11 to the adjustment member 10 (see FIG. 6C).

  Next, the support frame 11 is positioned in the longitudinal direction of the vehicle with respect to the mounting brackets 8 and 9, and is formed between the base end of the load receiving platform 5 and the rear end of the floor surface of the load box 3 as shown in FIG. The gap D in the vehicle longitudinal direction is optimized. Specifically, the pair of front and rear adjustment bolts 49 and 50 that are in contact with the ribs 9c and 9d of the rear mounting bracket 9 are moved in the vehicle front-rear direction. When performing the positioning operation in the front direction of the vehicle, as shown in FIG. 7A, the adjustment bolt 50 abutting against the rear rib 9d is rotated and adjusted, and the head surface 50a is moved backward, The contact with the rib 9d is released. Next, the adjustment bolt 49 that is in contact with the front rib 9c is rotationally adjusted, and the head surface 49a is pressed backward in a state of being in contact with the rib 9c. Then, the rib 9c is fixed to the vehicle body 2 via the rear mounting bracket 9, and its rearward movement is restricted, so that the reaction force of the rib 9c acts on the head surface 49a of the adjustment bolt 49. become. Therefore, by adjusting the rotation of the adjusting bolt 49, the base 47 moves forward relative to the adjusting bolt 49, and the adjusting member 10 to which the base 47 is fixed, and the adjusting member 10 has the first bolt. The support frame 11 secured by 35 and the first nut 36 moves forward within the range of the first long hole 37 with respect to the mounting brackets 8 and 9.

Further, when performing the positioning operation in the rear direction of the vehicle, as shown in FIG. 7B, the adjustment bolt 49 abutting on the front rib 9c is rotated, contrary to the positioning operation in the front direction of the vehicle. The head surface 49a is moved forward, and the contact with the rib 9c is released. Next, the adjustment bolt 50 in contact with the rear rib 9d is rotationally adjusted, and the head surface 50a is pressed forward in a state of being in contact with the rib 9d. Then, a reaction force similar to that described above acts on the head surface 50a, the base portion 48 moves rearward with respect to the adjustment bolt 50, and the adjustment member 10 and the support frame 11 move against the mounting brackets 8 and 9. It moves backward within the range of the first long hole 37.
Thus, when the support frame 11 is positioned in the vehicle front-rear direction, the position can be adjusted by the front and rear adjustment bolts 49, 50, so that the fine adjustment can be easily performed. Further, since the support frame 11 is restricted from moving in the vehicle width direction by being tightened by the first bolt 35 and the first nut 36, the support frame 11 is positioned in the vehicle width direction when positioning in the vehicle longitudinal direction. It is possible to prevent movement in the vehicle width direction from an appropriate position in the direction.

After the support frame 11 is aligned at an appropriate position in the vehicle front-rear direction, the front and rear adjustment bolts 49 , 50 are rotationally adjusted to release contact with the ribs 9c, 9d. In this state, the second bolt 41 is tightened, and the support frame 11 is secured to the mounting brackets 8 and 9 together with the adjustment member 10. Then, the front and rear adjustment bolts 49 , 50 are rotated again and brought into contact with the ribs 9c, 9d (see FIG. 4). Thereby, the positioning operation in the vehicle width direction and the vehicle longitudinal direction is completed.

As described above, the positioning of the support frame 11 with respect to the mounting brackets 8 and 9 in the vehicle width direction and the vehicle front-rear direction is completed when the positioning operation in the other direction is performed. Positioning work in the other direction can be performed in a state where movement in the direction is restricted. For this reason, since the movement to the one direction in an appropriate position is controlled while performing the positioning operation of other directions, the positioning operation of both directions can be performed rapidly.
Further, since the support frame 11 is supported by the mounting brackets 8 and 9 when performing the positioning operation in the vehicle width direction and the vehicle front-rear direction, the load of the load receiving platform can be received by the mounting bracket. For this reason, since it is not necessary for the operator to adjust the position while supporting the load of the load receiving table, the positioning operation can be easily performed. Further, since the load of the load receiving platform 5 can be supported by the highly rigid mounting brackets 8 and 9, it is not necessary to support the load of the load receiving platform lifting / lowering device 4 by the adjusting member 10. For this reason, since the thickness in the vertical direction of the adjustment member 10 can be formed thin, it is possible to suppress the mounting position of the load receiving platform elevating device 4 from being lowered by interposing the adjustment member 10 as much as possible. It is possible to prevent the load receiving table lifting device 4 from being damaged due to interference with obstacles on the ground.

[Container lifting device according to another embodiment]
FIG. 8 is a side view showing a connection structure of the mounting brackets 8 and 9, the adjustment member 10, and the support frame 11 of the load receiving platform lifting / lowering device 4 according to the second embodiment, and FIG. 4 in the first embodiment. It is a corresponding figure. In FIG. 8, the second embodiment is different from the first embodiment in that the attachment position of the restricting means 46 is different. Specifically, base portions 51 and 52 are respectively fixed to the upper surface of the adjustment member 10, behind the front mounting bracket 8 and in front of the rear mounting bracket 9. Adjustment bolts 53 and 54 are screwed to the base portions 51 and 52 so as to be movable in the vehicle front-rear direction. The adjustment bolts 53 and 54 have their head surfaces 53 a and 54 a fixed to the outer surface of the reinforcing rib 8 d fixed to the rear portion of the front mounting bracket 8 and the front portion of the rear mounting bracket 9. The reinforcing ribs 9c are in contact with the outer side surfaces. Thereby, the adjustment member 10 can be restricted from moving in the vehicle front-rear direction with respect to the mounting brackets 8 and 9.

Further, when performing the positioning operation in the vehicle front-rear direction, the adjustment bolts 53 and 54 are rotated and adjusted in a state where the first nut 36 and the second bolt 41 are loosened to release the binding. That is, the positioning in the front direction of the vehicle is performed by releasing the adjustment bolt 53 abutting on the rib 8d of the front mounting bracket 8 and releasing the adjustment bolt 53 abutting on the rib 9c of the rear mounting bracket 9. 54 is performed by adjusting the rotation. Further, the positioning in the rear direction of the vehicle is performed by releasing the adjustment bolt 54 abutting on the rib 9c of the rear mounting bracket 9 and releasing the adjustment bolt 54 abutting on the rib 8d of the front mounting bracket 8. 53 is performed by adjusting the rotation. Since the details are the same as those in the first embodiment, a detailed description thereof will be omitted.
As described above, according to the second embodiment, since the front and rear adjustment bolts 53 and 54 are disposed between the front and rear mounting brackets 8 and 9, the front and rear of the adjustment member 10 to which the adjustment bolts 53 and 54 are attached. The length of the direction can be shortened.

FIG. 9 is a side view showing a connection structure of the mounting brackets 8 and 9, the adjustment member 10, and the support frame 11 of the load receiving platform lifting / lowering device 4 according to the third embodiment, which is similar to FIG. 4 in the first embodiment. It is a corresponding figure. In FIG. 9, the third embodiment is different from the first embodiment in that the attachment position of the restricting means 46 is different. Specifically, on the upper surface of the adjustment member 10, the base portion 55, 56 towards after the mounting bracket 9 of the previous way and the rear of the front of the mounting bracket 8 is fixed to each. Adjustment bolts 57 and 58 are screwed to the base portions 55 and 56 so as to be movable in the vehicle front-rear direction. The adjustment bolts 57 and 58 have their head surfaces 57 a and 58 a fixed to the outer surface of the reinforcing rib 8 c fixed to the front portion of the front mounting bracket 8 and the rear portion of the rear mounting bracket 9. The reinforcing ribs 9d are in contact with the outer side surfaces. Thereby, the adjustment member 10 can be restricted from moving in the vehicle front-rear direction with respect to the mounting brackets 8 and 9.

Further, when performing the positioning operation in the vehicle front-rear direction, the adjustment bolts 57 and 58 are rotated and adjusted in a state where the first nut 36 and the second bolt 41 are loosened and the lashing is released. That is, positioning in the front direction of the vehicle is performed by releasing the adjustment bolt 58 that is in contact with the rib 9d of the rear mounting bracket 9 and the adjustment bolt that is in contact with the rib 8c of the front mounting bracket 8. 57 by adjusting the rotation. Further, the positioning in the vehicle rear direction is performed by releasing the adjustment bolt 57 that is in contact with the rib 8c of the front mounting bracket 8 and the adjustment bolt that is in contact with the rib 9d of the rear mounting bracket 9. 58 by adjusting the rotation. Since the details are the same as those in the first embodiment, a detailed description thereof will be omitted.
As described above, according to the third embodiment, the front and rear adjustment bolts 57 and 58 are disposed in front of the front mounting bracket 8 and rearward of the rear mounting bracket 9. , 58 can perform the adjustment work in a relatively large space in front of or behind the support frame 11, so that the adjustment work can be easily performed.

FIGS. 10-12 is a side view which shows the connection structure of the attachment brackets 8 and 9, the adjustment member 10, and the support frame 11 of the load receiving platform raising / lowering apparatus 4 which concerns on 4th Embodiment, in 1st Embodiment. FIG. 3 is a diagram corresponding to FIGS. 4, 5, and 2. In FIG. 10, the fourth embodiment is different from the first embodiment in that the order of positioning work is different. That is, in the first embodiment, positioning in the vehicle longitudinal direction is performed after positioning in the vehicle width direction. In the fourth embodiment, after positioning in the vehicle longitudinal direction, the vehicle width direction is performed. Each positioning operation is performed. Accordingly, the orientation of the long holes 59 , 60 , 61 formed in the mounting brackets 8, 9, the adjusting member 10 and the support frame 11 and the mounting position of the restricting means 46 are different. Details will be described below.

As shown in FIG. 11, the long hole 59 formed in the adjustment member 10 and the second long hole 61 formed in the support frame 11 are formed long in the vehicle front-rear direction. Moreover, the 1st long hole 60 formed in the attachment brackets 8 and 9 is formed long in the vehicle width direction.
With the above configuration, by loosening all the tightening by the first nut 36 and the second bolt 41, the support frame 11 is held in a state of being supported suspended by the mounting brackets 8 and 9, while the mounting brackets 8 and 9 and The adjustment member 10 can be moved in the vehicle longitudinal direction within the range of the long hole 59 and the second long hole 61 with respect to the adjustment member 10, and the adjustment member 10 within the range of the first long hole 60 with respect to the mounting brackets 8 and 9. At the same time, it can be moved in the vehicle width direction.

Further, as shown in FIG. 12, the restricting means 46 is provided on the upper surface of the adjusting member 10 disposed below the pair of left and right chassis frames 6 and between the first elongated holes 60 formed at the front and rear. And base bolts 62, 63 and adjusting bolts 64, 65 screwed to the base portions 62, 63 so as to be movable in the vehicle width direction. The adjustment bolts 64 and 65 have their head surfaces 64a and 65a abutting against the outer side surfaces 6b and 6c of the left and right chassis frames 6, respectively. Thereby, the adjustment member 10 can be restricted from moving in the vehicle width direction with respect to the chassis frame 6 (the vehicle body 2).
Further, the contact between one adjustment bolt 64 (65) of the pair of left and right adjustment bolts 64 and 65 and the outer surface 6b (6c) of the chassis frame 6 is released, and the other adjustment bolt 65 (64) is moved to the chassis. If the rotation adjustment is performed with the frame 6 in contact with the outer surface 6c (6b), the position of the adjustment member 10 in the vehicle width direction with respect to the chassis frame 6 can be finely adjusted.

  The positioning operation of the load receiving platform lifting / lowering device 4 in the fourth embodiment is different from the first embodiment in that the positioning operation in the vehicle width direction is performed after the positioning operation in the vehicle front-rear direction as described above. Although different, the details of other positioning operations are the same as those in the first embodiment, and thus the description thereof is omitted.

The present invention is not limited to the above-described embodiments. For example, in each of the above-described embodiments, the second attachment means 32 includes the adjustment members 10 and the support frame 11 (support base A) on the attachment brackets 8 and 9. However, it is also possible to tie up the mounting brackets 8 and 9 in a state where only the adjustment member 10 is connected.
In each of the above embodiments, the long holes 33 and 59 are formed in the adjustment member 10, but can also be formed in the support frame 11.
Further, in each of the above embodiments, the support frame 11 is supported by the mounting brackets 8 and 9 and the adjustment member 10, but the cross member 12 can also be supported by the mounting brackets 8 and 9 and the adjustment member 10.

In each of the above embodiments, the adjustment bolt provided on the adjustment member is brought into contact with the mounting bracket or the vehicle body. However, the adjustment bolt provided on the attachment bracket or the vehicle body can be brought into contact with the adjustment member.
Moreover, in each said embodiment, although the shape of the insertion part 38 is made into the perfect circle, it is also possible to form the elongate hole extended in a vehicle width direction or a vehicle front-back direction, or a notch groove.
Further, in each of the embodiments described above, the stowable storage type lifting / lowering device 4 that raises the load receiving platform 5 to the rear of the cargo box 3 has been described. It is also possible to employ the load receiving table lifting device 4.

It is a side view of the load receiving table raising / lowering apparatus attached to the lorry. It is a top view of the load receiving table raising / lowering apparatus of FIG. It is an enlarged view of the base end part of a load receiving stand. It is a side view which shows the connection structure of the mounting bracket and support base part of the load receiving platform raising / lowering apparatus which concerns on the 1st Embodiment of this invention. It is the top view which decomposed | disassembled the connection structure of FIG. (A) is a side view showing the state where the first attachment means and the second attachment means are released from the state shown in FIG. 4, and (b) shows the state where the restriction means is released from the state shown in (a). It is a side view, (c) is a side view which shows the state fixed by the 1st attachment means from the state of (b). (A) is a principal part enlarged view of FIG. 4 which shows the state which finely adjusted the support base to the vehicle front direction with the adjustment bolt, (b) shows the state which finely adjusted the support base to the vehicle rear direction with the adjustment bolt. It is a principal part enlarged view of FIG. It is a side view which shows the connection structure of the attachment bracket and support base part of the load receiving platform raising / lowering apparatus which concerns on the 2nd Embodiment of this invention. It is a side view which shows the connection structure of the attachment bracket and support base part of the load receiving platform raising / lowering apparatus which concerns on the 3rd Embodiment of this invention. It is a side view which shows the connection structure of the attachment bracket and support base of a load receiving table raising / lowering apparatus which concerns on the 4th Embodiment of this invention. It is the top view which decomposed | disassembled the connection structure of FIG. It is a top view of the load receiving table raising / lowering apparatus of FIG.

Explanation of symbols

2 Car body 4 Loading platform lifting device 5 Loading platform 8, 9 Mounting bracket A Support base 10 Adjustment member 31 First mounting means 32 Second mounting means 40 Second connecting member (connecting member)
46 Restricting means 49, 50, 53, 54, 57, 58, 64, 65 Adjustment bolt

Claims (4)

A load receiving base; a support base on which the load receiving base is mounted so as to be movable up and down; and a mounting bracket that supports the support base and is fixed to the vehicle body. The support base is mounted on the vehicle with respect to the mounting bracket. In the load receiving platform lifting device that can be adjusted in the width direction and the vehicle front-rear direction,
An adjustment member interposed between the mounting bracket and the support base;
The support base can be repositioned in any one of a vehicle width direction and a vehicle front-rear direction with respect to the adjustment member, and the support base can be secured to the adjustment member at an arbitrary position. One attachment means;
Second mounting that allows the position of the adjustment member to be changed in the other direction of the vehicle width direction and the vehicle front-rear direction with respect to the mounting bracket, and allows the adjustment member to be secured to the mounting bracket at an arbitrary position. Means,
A cargo receiving platform elevating device characterized by comprising:   The second attachment means is configured such that the adjustment member can be repositioned in the other direction with respect to the attachment bracket, and the support base can be repositioned in the one direction with respect to the attachment bracket together with the adjustment member. The load receiving platform lifting device according to claim 1, further comprising a connecting member that connects the adjustment member and the support base to the mounting bracket.   The adjustment member in a state in which the position of the support base is changeable in the one direction relative to the mounting bracket and the position of the adjustment base in the other direction is changeable in the other direction. The load receiving table elevating device according to claim 2, further comprising a restricting means for restricting.   The regulating means includes a pair of adjusting bolts that are arranged apart from each other in the other direction and that can be brought into contact with the mounting bracket or the vehicle body by being individually movable from both sides in the other direction. 3. The cargo receiving table lifting device according to 3.

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