JP5822550B2 - Loading platform lifting device - Google Patents

Description

  The present invention relates to a covering member for covering a side surface of a load receiving platform in a load receiving platform lifting device used for loading and unloading loads on a vehicle.

  For example, the load receiving platform of the load receiving platform lifting device arranged at the rear of the vehicle is a combination of a plurality of molding blocks whose longitudinal direction is the vehicle width direction from the base end portion to the distal end portion, and the side end portion of the load receiving stand Is provided with a covering member covering the side surface to maintain a predetermined appearance quality.

  In order to enhance the function of preventing the fall of the load, such a load receiving table lifting device includes a load receiving member 92a having a substantially L-shaped cross section provided on the side of the load receiving table 91 as shown in FIG. When the fall prevention member 92 is provided on the load receiving table 91 on which the covering member 93a is disposed, the effective area for loading and unloading is reduced if the covering member 93a is avoided. Therefore, a configuration in which the fall prevention member 92b is arranged on the covering member 93b as shown in FIG. 5B showing a BB cross section, or a cross section extending from the side surface of the load receiving table 91 as shown in FIG. 5C. The structure etc. which used the fall prevention member 92c which has a substantially L-shaped guard part, and the coating | coated member 93c etc. are proposed (patent document 1).

JP 2009-101761 A

  By the way, functions and applications required for the covering member may differ depending on the cargo to be loaded and unloaded using the load receiving platform lifting device. Therefore, even in the same type of cargo receiving platform lifting device, the configuration of the covering member may be changed as appropriate in accordance with the type of luggage. For this reason, different types of covering member molding apparatuses and production lines are required, which leads to an increase in production costs.

  For example, when a large amount of luggage is placed on a load receiving table using a cart with casters, a load receiving table in which a fall prevention member is provided on the side of the load receiving table is desired. On the other hand, when placing a load directly on the receiving platform, an operator sometimes loads the load from the side of the receiving platform. At this time, the operator may fall down due to the fall-preventing member standing on the load placement surface. For this reason, a cradle without a fall prevention member may be preferred.

  Therefore, as shown in FIG. 5B, when the fall preventing member 92b having a substantially L-shaped cross section is arranged so that the bent surface bent with respect to the standing surface overlaps the covering member 93b, the load receiving base. The fall prevention member 92b and the covering member 93b can be integrally secured by passing a bolt or a rivet through the covering member 93b with respect to 91, and reduction of the effective area can be suppressed. However, when the lashing member is released and the fall prevention member 92b is removed, the covering member 93b is also released from the lashing state, so that the covering member 93b needs to be lashed again. Furthermore, since the cover member 93b and the fall prevention member 92b are designed in consideration of being tied together, there is a possibility that only the covering member 93b cannot be tied to the load receiving stand 91 alone.

  Further, in the case of a configuration in which the covering member 93c and the fall prevention member 92c are used as shown in FIG. 5C (Patent Document 1), a configuration in which the fall prevention member 92c is coupled to the covering member 93c by welding or by integral molding. Due to the configuration, the fall prevention member 92c is always placed on the load receiving table 91.

  The present invention has been made in view of these points, and is capable of appropriately responding to a receiving platform for many functions and uses, and is provided with a uniform covering member, thereby reducing the manufacturing cost. An object of the present invention is to provide a cargo receiving platform lifting device that can be suppressed.

  In the present invention, the steam problem can be solved by using the following means.

  (1) A load receiving platform lifting apparatus provided with a load receiving platform that is provided at the rear of the vehicle and moves up and down between the ground and the loading platform, and a covering member that covers a side surface at an end of the loading platform in the vehicle width direction. In addition, the outer surface of the covering member is formed with an engaging portion that engages with an engaged member disposed on the side of the load receiving table with the longitudinal direction of the load receiving table as the longitudinal direction of the vehicle. And

By adopting this configuration, for example, when selecting a configuration in which a member for preventing the cargo from falling from the side of the cargo cradle is selected, a fall prevention member to be engaged with the engagement portion is prepared. Can satisfy the user's request. Since the engaging portion has the longitudinal direction in the vehicle front-rear direction, it can be easily removed even when the load receiving table is folded or unfolded, and further, stored under the floor or stood. In addition, when the fall prevention member is not required, if the engagement portion is a concave shape such as a groove, an engagement member that fills or covers the recess is disposed so that the engagement portion is not exposed. It is possible to prevent rainwater from being collected in the concave portion. Also, if the engaging part is a protruding shape, by disposing an engaged member that covers the protruding part, it can reduce the impact of interference with external obstacles and surrounding workers, etc. It can also be used.
(2) The engaged member in (1) is configured to be inserted through the engaging portion along the vehicle longitudinal direction.
(3) In a state where the engaged member in (1) and (2) is engaged with the engaging portion, the engaged member has a shape protruding upward from the side of the load receiving platform.

  (4) The engaged member further includes a support portion that engages with the engagement portion, and a protruding portion that extends from the support portion and protrudes upward from the side of the load receiving platform. And a fixing member for fixing the support portion and the covering member.

(5) The engaged member in the above (1) and (2) is a fitting member that is fitted into the engaging portion, so that even when the fall prevention member is not arranged on the covering member, the quality and safety aspects. Can provide a predetermined effect.
The configurations (3) and (5) can be selected as appropriate.

  As in the present invention, an engagement groove is provided in the covering member that covers the side surface of the load receiving platform, and the engaged member can be detached from the covering member, so that the fall prevention member is necessary and unnecessary. It can be used in any case. Therefore, the manufacturing cost can be greatly reduced. Further, since the engaging portion has a shape in which the longitudinal direction of the vehicle is the longitudinal direction, it is possible to engage only by inserting a part of the engaged member through the engaging portion along the longitudinal direction of the vehicle. Therefore, it is possible to easily remove the engaged member even in the load receiving platform lifting device in various storage states.

It is a principal part perspective view of the load receiving table raising / lowering apparatus which concerns on embodiment of this invention, and a schematic cross section of a coating | coated member and a fall prevention member. It is a side view which shows the storing operation | movement of the goods receiving stand which concerns on embodiment of this invention. It is a side view of the goods receiving stand from which the structure at the time of storage differs. It is sectional drawing which shows the covering member and engaged member of another structure. It is principal part sectional drawing of the load receiving stand raising / lowering apparatus which concerns on the conventional embodiment, and a schematic cross section of a coating | coated member and a fall prevention member.

  An example of an embodiment of the present invention will be described with reference to FIG. FIG. 1A is a perspective view of a main part of a load receiving table lifting apparatus 100 that moves up and down behind the vehicle 1. The load receiving platform lifting / lowering device 100 includes an arm member 2 having a base end connected to a chassis frame (not shown) extending in the front-rear direction of the vehicle 1 and rotating up and down, and a load receiving stand supported by the distal end of the arm member 2. 3.

  The arm member 2 is rotated by a lift cylinder (not shown) that expands and contracts by supplying and discharging hydraulic oil. As the arm member 2 rotates, the load receiving platform 3 is moved up and down between the ground and the load platform while maintaining a horizontal posture.

  The load receiving platform 3 includes a proximal load receiving platform 31, an intermediate load receiving platform 32, and a distal load receiving platform 33. The distal load receiving platform 33 can be folded into the intermediate load receiving platform 32, and the intermediate load receiving platform 32 is based on the intermediate load receiving platform 32. It can be folded at the end-side receiving platform 31. A covering member 4 that covers the side surface of the load receiving table 3 and a fall prevention member 5 that is engaged with the covering member 4 are disposed at the left and right side ends of the load receiving table 3. The covering member 4 and the fall prevention member 5 both extend with the longitudinal direction of the vehicle 1 in the illustrated state (X direction) as the longitudinal direction.

  The covering member 4 and the fall-preventing member 5 are arranged at the side end portion of the intermediate-side load receiving base 32 of the load receiving base 3, and the shape and the like are specifically described with reference to FIG. I will explain it.

  The covering member 4 is an aluminum member having a substantially U-shaped cross section. The covering member 4 is manufactured using an extruded material (or a drawer material) and has a substantially constant cross-sectional shape along the longitudinal direction of the vehicle 1. Although not shown, the covering member 4 is fixed to the intermediate load receiving platform 32 via rivets at the upper portion 4a and the lower portion 4b. In addition, regarding a fixing means, the structure using another securing member or the structure welded may be sufficient. In the covering member 4, a groove portion 41 c having a longitudinal direction in the front-rear direction of the vehicle 1 is provided on the outer surface of the side portion 4 c that covers the side surface of the intermediate load receiving tray 32. A support portion 5a for the fall prevention member 5 is disposed in the groove portion 41c.

  The fall prevention member 5 is extended further upward (Z direction) from the support part 5a, the side extension part 5b extending from the support part 5a in the vehicle width direction (Y direction), and the side extension part 5b. And an upper projecting portion 5c projecting from the load placing surface of the load receiving platform 3. Like the covering member 4, it is an aluminum member and is manufactured using an extruded material (or a drawer material). As shown in the drawing, the upward projecting portion 5 c is in an upright posture with respect to the intermediate-side load receiving table 32, so that the cargo placed on the load receiving table 3 can be prevented from falling from the side.

  The covering member 4 and the fall prevention member 5 are both made of an aluminum member made of an extruded material in order to cope with a fine undulating shape. However, a structure based on another manufacturing method may be used as long as equivalent shape processing is possible. Absent. Further, the material may be a resin member or an iron member. Furthermore, the members 4 and 5 may be made of different materials.

  As shown in FIG. 1C, the drop prevention member 5 is engaged with the covering member 4 from the distal end side (front side in FIG. 1C) to the proximal end side (FIG. 1C). ) It is carried out by inserting the support part 5a toward the back side of the paper. The insertion direction may be opposite (from the proximal end side to the distal end side). Further, the fall prevention member 5 and the covering member 4 are configured such that the supporting portion 5a is pushed toward the groove portion 41c side of the covering member 4 by inserting a fixing member such as the pushing pin 9 into the through hole 51 provided in the supporting portion 5a. Upon receiving the spreading force, the contact portion between the support portion 5 a and the groove portion 41 c comes into a strong contact state, and the fall preventing member 5 is securely fixed to the covering member 4. Such a means for fixing the fall prevention member 5 is simple because high positioning accuracy is not required as compared with the case where the fall prevention member 5 is fixed to the intermediate load receiving tray 32 via a bolt or the like. Of course, fixing means via bolts or the like may be used by processing with high positioning accuracy. Furthermore, as long as a high fitting force is provided between the support portion 5a and the groove portion 41c, a configuration without using a fixing member may be used.

  As shown in FIG. 1C, the groove 41c is set such that the height 41h of the inner portion is larger than the height 4h of the opening. The support portion 5a of the fall prevention member 5 inserted through the opening having this shape has a neck shape. When the support portion 5a is inserted into the groove portion 41c, the opening portion of the groove portion 41c is set to be closed by the neck portion, and the height 5h of the neck portion is the height of the opening portion of the groove portion 41c. The size is set to approximately the same as 4h. Moreover, the support part 5a has a bowl-shaped part in the opposite direction (right side in the figure) to the side extending part 5b. The flange-shaped part is set to a size that fits in the inner part of the groove 41c, and the height 51h and the width 51w of the flange-shaped part are the height 41h and the width 41w of the inner part of the groove 41c. Are set to approximately the same size.

  The fall prevention member 5 can be easily detached from the covering member 4 according to the operator's request. When the fall prevention member 5 is not required, the load receiving base 3 on which only the covering member 4 is arranged can do. At this time, by arranging the resin cap member 6 that covers the groove 41c as shown in FIG. 1D, the groove 41c is not exposed and can have a certain appearance quality and safety performance. . This cap member 6 also has a shape that closes the opening of the groove 41c with the longitudinal direction of the vehicle 1 as the longitudinal direction, like the support portion 5a in the fall prevention member 5 described above.

  In addition, since the fall prevention member 5 and the cap member 6 described above are inserted into the groove portion 41c whose longitudinal direction is the vehicle front-rear direction, a sealing member is provided before and after the groove portion 41c after insertion, and a gap is generated when viewed from the vehicle front-rear direction. No configuration.

  If it is the detachable fall prevention member 5 like this embodiment, the structure of the coating | coated member 4 can be made constant. When the fall prevention member 5 is required, the fall prevention member 5 may be engaged with the covering member 4. When the fall prevention member 5 is not required, the cap member 6 is engaged with the same covering member 4. It is because it is only necessary to make it the state made into. That is, it is not necessary to change the type of the covering member 4 depending on the presence or absence of the fall prevention member 5 at the time of manufacture, and it is not necessary to prepare a different molding device or a different manufacturing line, so that the manufacturing cost can be greatly reduced. Further, when using the load receiving platform lifting device 100, when the side surface of the load receiving platform 3 interferes with an external obstacle and only the fall preventing member is damaged, only the fall preventing member 5 can be replaced or repaired. Maintenance costs can also be reduced. The same applies when only the covering member 4 is replaced or repaired.

Further, the engaged member has the side portion 4c of the covering member 4 as an engaging portion, and the engaged member can be engaged even when the load receiving platform 3 is in the expanded state or the folded state. . In the load receiving table 3 with which the fall preventing member 5 is engaged, since the fall preventing member 5 has a shape extending from the side to the upper side of the load receiving table 3 as described above, the effective area of the load receiving table 3 is not reduced. . In addition, in consideration of suppressing the increase in the thickness of the load receiving platform 3, the engaged member is engaged with the side portion 4 c even when the covering member 4 is not substantially U-shaped in cross section but is substantially L-shaped in cross section. Can be made. From the same consideration, a configuration in which the side member 4c is engaged instead of the upper part 4a and the lower part 4b of the covering member 4 is preferable. Further, if a reflective tape or the like is affixed to the outer surface of the engaged member, it is possible to urge attention to the surroundings when the cargo receiving platform 3 is moved up and down, or when pulling out and pulling in under the loading platform. .
The pulling-in and pulling-in of the load receiving table 3 is performed as shown in FIG. FIG. 2 shows a state in which the fall prevention member 5 is engaged with the covering member 4.

  When the load receiving platform 3 is drawn (stored) below the loading platform, first, as shown in FIG. 2A, the intermediate load receiving platform 32 in which the front end receiving platform 33 is folded is leaned against the guide roller 7. After that, the lift cylinder 21 for raising and lowering is used to bring the state (slidable state) 3A shown by the two-dot chain line portion in FIG. 2B into the retracted state by sliding the vehicle forward using the slide cylinder 22 for sliding. 5B. The load receiving platform 3 is slid in the front-rear direction of the vehicle 1 by expanding and contracting the slide cylinder 22 and moving the slide member 8 along the slide rail 9.

  As shown in the figure, the fall prevention member 5 arranged on the side surface of the intermediate load receiving base 32 is movable during any of the sliding operation of pulling out or pulling in and the rotating operation accompanying folding of the load receiving base 3. If a warning member such as a reflective tape is affixed to the movable part, it has a great effect on safety.

As described above, the covering member 4 is configured to be disposed only on the intermediate side receiving platform 32, but may be configured to be disposed on other portions. Therefore, another embodiment will be described with reference to FIG.
Fig.3 (a) is a side view of the load receiving stand 30 which concerns on another embodiment, and is the top view which looked at the side edge part of the load receiving stand 30 from FIG.3 (b).

  The load receiving table 30 is divided into three parts and can be folded in the same manner as the above-described load receiving table 3. A proximal end side receiving portion 310 is provided with a proximal end side covering portion 410, and is engaged with a side portion of the proximal end side covering member 410, and a proximal end side fall prevention member 510 extending from the side to the upper side is provided. It is arranged. Similarly, covering members 421, 422, and 430 and fall prevention members 521, 522, and 530 are disposed on the intermediate-side load receiving table 320 and the front-end side receiving table 330. Since the fall prevention members 521, 522, and 530 are arranged on the respective cargo receiving stands 310, 320, and 330, it is possible to increase the effect of preventing the fall of the load from the cargo receiving base 30.

  When the front end side receiving tray 330 is folded into the intermediate side receiving tray 320 (arrow R1), the front end side falling prevention member 430 is connected to the second intermediate side fall preventing member 522 disposed on the front end side of the intermediate side receiving tray 320. Overlapping when viewed from the side. The front end side fall prevention member 430 has a laterally extending width w1 with respect to the front end side receiving tray 330, and the size thereof is smaller than the extension width w22 of the second intermediate side fall preventing member. Therefore, the front end side fall prevention member 430 overlaps with the inside of the second intermediate side fall prevention member 522.

  The intermediate-side load receiving table 320 is further provided with a first intermediate-side fall prevention member 521 on the base end side, and when the intermediate-side load receiving table 320 is folded on the base end-side load receiving stand 310 (arrow R2), the first intermediate side The fall prevention member 521 overlaps with the base end side fall prevention member 510 when viewed from the side. The lateral extension width w21 of the first intermediate side fall prevention member 521 is the same size as the extension width w22 of the second intermediate side fall prevention member, and the extension width w3 of the proximal end side fall prevention member 510 is the same. Is set larger than. Therefore, the first intermediate side fall prevention member 521 overlaps with the base end side fall prevention member 510 so as to go around the outside.

  In the present embodiment, in a state where the cargo receiving stand 30 is stored, two sets of fall prevention members are overlapped when viewed from the side. Therefore, a state in which the first intermediate side fall prevention member 521 and the base end side fall prevention member 510 are overlapped is shown in FIG. 3C as a representative example, but the other pair is also in the same state. FIG. 3C is a cross-sectional view centering on each fall prevention member when viewed from the rear of the vehicle.

  Of the base end side fall prevention member 510 positioned on the lower side, the upper extension portion 510a extending upward enters the U-shaped groove portion 5211 formed of the first intermediate side fall prevention member 521 located on the upper side. It is out. As shown in the figure, rainwater, mud, or the like is formed in a gap formed by folding the proximal-side load receiving base 310 and the intermediate-side load receiving base 320 by being covered with the first intermediate-side fall prevention member 521. Will not enter.

  Further, even when the fall prevention members 510 and 521 overlap each other as shown in FIG. 3C, the fall prevention members 510 and 521 are engaged in the side portions 410a and 421a of the covering members 410 and 421. Therefore, the fall prevention members 510 and 521 can be easily removed. That is, the covering members 410 and 421 can be fitted to the grooves 410c and 421c whose longitudinal direction is the longitudinal direction of the vehicle 1 simply by inserting the fall prevention members 510 and 521 from the rear to the front of the vehicle. Therefore, even when the load receiving platform 30 is folded, the first intermediate side fall prevention member 521 is first fitted and fixed to the first covering member 421 via the fixing member. Thereafter, the base end side fall prevention member 410 can be fitted and similarly fixed to the base end side covering member 410. As a result, the fall prevention members 510 and 521 can be easily replaced and repaired without having to unfold the cargo receiving platform. The reason why the first intermediate side fall prevention member 521 is first fitted is that the layout of FIG. 3 (c) takes into account the ease of fixing by the fixing member, and the tip side side fall prevention member located on the lower side. If it is easier to fix 510 first, it may be fitted from the tip side fall prevention member 510. Furthermore, when the engagement state is obtained only by fitting without requiring a fixing member, any of the fall prevention members may be fitted first. The same applies when a cap member is provided.

  Although the covering member 4 described above has a groove portion 41c and the engaged members 5 and 6 are engaged with the groove portion 41c, the shape of the engagement portion is not limited thereto. For example, as shown in FIG. 4 (a), a covering member 640 having a convex portion 642 having a hook-shaped portion provided on the side portion 641 and a groove portion 652 having a shape fitted to the neck-shaped portion are supported. The same effect can be obtained with the fall prevention member 650 provided in the portion 651. That is, even if any of the engaging portions of the groove portion 41c or the convex portion 642 is provided on the covering members 4 and 640, the covering member 4 or 640 is fitted to the engaging portion among the opposed engaged portions 5 and 650. If the part to be attached is a convex support part 5a or a concave support part 651, it can be appropriately engaged. The shape of the resin cap 6 at this time may similarly have a shape corresponding to the engagement portion of the covering members 4 and 640 as appropriate.

  Further, since the resin cap 6 is disposed so as to cover the groove 41c as shown in FIG. 1D, it is disposed so as to cover the opening of the groove 41c, but this shape is limited. Not. For example, as shown in FIG. 4B, it may be inserted so as to fill only the inner space of the groove 41c. By arranging such an embedding member 660 to be embedded, the same effect as the cap member 6 described above can be obtained, and the side portion of the covering member 4 can be made substantially flush, It can also improve the appearance quality. However, the cap member as shown in FIG. 1 (d) and the embedded member as shown in FIG. 4 (b) are common in that they have a portion that fits into the inner space of the groove. . In addition, when the engaging part (groove part 41c or convex part 642) of the covering members 4 and 640 is convex, the point that the convex part is inserted into the concave part of the engaged member is the same. is there.

  As described above, the covering member in which the engaged member can be removed by engaging with or disengaging from the fitting member such as the fall prevention member or the cap member has been described. Since the engaging portion (groove portion) of the member is provided, the engaged member can be easily engaged in either the folded state or the unfolded state. Therefore, the load receiving table used is not limited to a foldable load receiving table. Also, it is not limited to the load receiving platform lifting device in which the load receiving platform is stored below the loading platform, but is stored in a standing state below the loading platform, or is not raised or lowered by the arm member, but is erected on the rear side of the vehicle The present invention can also be used for a known load receiving table lifting device that moves up and down along a pair of left and right posts and others.

  INDUSTRIAL APPLICABILITY The present invention is useful for an apparatus having a load receiving platform on which a load moved from a vehicle loading platform is placed, in particular, for all types of load receiving platform lifting devices that rise to substantially the same height as the loading platform.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Arm member 3 Load receiving stand 4 Cover member 5 Fall prevention member 6 Cap member 9 Fixing member 4c Side part (cover member)
41c engagement groove (covering member)
5a Support part (fall prevention member)
5b Side extension (fall prevention member)
5c Upper protrusion (fall prevention member)
100 Loading platform lifting device

Claims (4)

A load receiving platform lifting device comprising: a load receiving platform that is provided at the rear of the vehicle and moves up and down between the ground and the loading platform; and a covering member that covers a side surface at an end in the vehicle width direction of the cargo receiving platform, the outer surface of the cover member, as the receiving platform of the vehicle in the longitudinal direction longitudinal direction and the engaging portion is formed to be engaged with the engaged member disposed on a side of said receiving platform, the object to be engaged When the load receiving table moves up and down with the joint member engaged with the engaging portion, the engaged member has a shape protruding upward from the side of the load receiving table. Stand lifting device. The said receiving member is penetrated by the said engaging part along the said vehicle front-back direction. The load receiving platform raising / lowering apparatus of Claim 1 characterized by the above-mentioned. The engaged member includes a support portion that engages with the engagement portion, and a protruding portion that extends from the support portion and protrudes upward from a side of the load receiving table, and the support portion. The load receiving table lifting device according to claim 1 , further comprising: a fixing member that fixes the covering member and the covering member. The said receiving member is a fitting member inserted in the said engaging part. The load receiving stand raising / lowering apparatus of Claim 1 or 2 characterized by the above-mentioned.

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