JP5545708B2 - Step passage - Google Patents

Description

  The present invention relates to a step passage for forming a slope for guiding a vehicle such as a forklift at a step portion.

  Vehicles such as trucks and forklifts are used to transport various materials and earth and sand cargo to construction sites such as civil engineering work and construction work. If there is a stepped portion, that is, a stepped portion in such a construction site, the vehicle cannot smoothly travel, and therefore a stepped passage is laid in the stepped portion. As the step passage, as described in Patent Document 1, a set slope in which a step passage is formed by assembling a plurality of rod-shaped spacers such as an inclined spacer whose upper surface is inclined in the width direction or a laminated spacer having a square cross section. By changing the number of spacers and the combination pattern, it is possible to form a step passage having an arbitrary height. Moreover, when an operator carries earth and sand and materials using a unicycle, in order for an operator to pass a level | step-difference part, changing the inclination angle of a cloth board with a screw member as described in patent document 2 There is a step passage that can be used.

JP 2003-3634 A JP 2005-207145 A

  Since the step passage installed at the civil engineering construction site etc. will be removed when the work is completed, it is desirable that the step passage can be easily laid and removed by the operator. . As described above, when a plurality of types of spacers such as inclined spacers and laminated spacers are combined, the weight of one spacer can be manually transported by an operator, so that the steps for laying and removing the step passages can be performed. It can be done easily.

  However, in the step passage for the vehicle to travel, it is not necessary to set the width of the step passage to a width dimension corresponding to the width of the vehicle. This is because it is not necessary to install a step passage in a portion corresponding to the space between the left and right wheels of the vehicle. On the other hand, as described in Patent Document 2, a stepped passage of a type in which the inclination angle of the cloth plate is changed by a screw member is suitable for an operator's travel, but to guide a heavy vehicle. Becomes insufficient in strength.

  Therefore, in the step passage for driving the vehicle, it is necessary to increase the strength of the members constituting the step passage. Therefore, a relatively heavy member is used, and the laying work is performed manually by the operator. Since the removal work is difficult, laying work and removal work are performed using a crane.

  An object of the present invention is to make it possible to easily perform a laying operation and a removal operation of a step passage for running a vehicle by an operator's manual operation.

The step passage of the present invention is a step passage that is laid between a lower step surface and an upper step surface higher than the lower step surface in a state where a plurality of vehicles are connected in the width direction, and guides the wheels of the vehicle. A fixed piece fixed to the lower step surface is provided, and a main slope in which a support column supported by the lower step surface is fixed to the lower surface of the distal end portion, and a distal end portion of the main slope is rotatably connected at the proximal end portion. The sub-slope in which the abutting portion with which the tip portion abuts on the upper surface is connected to the support struts in the plurality of main slopes arranged adjacent to each other in the width direction, and a set of A connecting bar for assembling a passage assembly, and a plurality of connecting rods are connected so as to have a width larger than the wheel width of the vehicle, and are laid between the lower step surface and the upper step surface. To do.

The step passage of the present invention has at least one intermediate slope connected between the main slope and the sub slope, and is supported by the lower step surface on the lower surface of the front end portion of the intermediate slope. the strut is fixed, it characterized by connecting via the intermediate slope the sub slope with respect to the main slope. The step passage according to the present invention is characterized in that the intermediate slope is detachably connected to the main slope and the sub slope. The step passage according to the present invention is characterized in that a transfer plate disposed between the tip of the sub slope and the upper step surface is rotatably mounted on the tip of the sub slope.

  According to the present invention, a passage assembly is formed by connecting a plurality of step passages in the width direction, and the step passage has a main slope and a sub-slope that is rotatably connected to the main slope. Even if the heights of the portions are different, the main slope is fixed to the lower step surface, and the sub slope is fixed to the upper step surface, so that a passage for traveling the vehicle can be surely formed. Since the passage for driving the vehicle is formed by connecting a plurality of stepped passages, the weight of one stepped passage can be reduced, and the stepped passages can be transported manually. In particular, by making one step passage separable from each other, the main slope and the sub slope constituting the step passage can be easily transported manually. As a result, it is possible to easily perform the laying work and the removal work of the step passage for running the vehicle by the manual work of the operator.

  When the main slope and the sub slope are connected by at least one intermediate slope, the step passage can be lengthened and the inclination angle can be reduced.

It is a perspective view which shows the state which connected the several level | step difference channel | path which is one embodiment of this invention, and was laid in the level | step-difference part. It is a top view which shows the level | step difference channel | path shown by FIG. FIG. 3 is a front view of FIG. 2. FIG. 4 is a sectional view taken along line 4-4 in FIG. (A) is a top view which shows the level | step difference channel | path which is other embodiment of this invention, (B) is a front view of (A). FIG. 6 is an enlarged front view of 6 parts in FIG. FIG. 6 is an enlarged plan view of part 7 in FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 4 show a step passage according to an embodiment of the present invention. As shown in FIG. 1, the step passage 10 is laid on a step portion 13 having a lower step surface 11 and an upper step surface 12 higher than this, and a work vehicle such as a truck or a forklift is connected between the lower step surface 11 and the upper step surface 12. Used to guide between. As shown in FIG. 1, the step passage 10 is laid on the step portion 13 in a state where a plurality of step passages 10 are connected to each other in the width direction. In FIG. 1, one set of passage assemblies 10A is formed by connecting three step passages 10 so that the width dimension of the connected step passages 10 is larger than the widths of the left and right wheels of the vehicle. FIG. 1 shows a state in which two sets of passage assemblies 10A are laid on the stepped portion 13 in correspondence with the left and right wheels of the vehicle.

  Thus, when the passage assembly 10A is formed by a plurality of stepped passages 10, the weight of each stepped passage 10 can be reduced to a weight that an operator can carry manually, Without using heavy equipment such as a crane, the laying operation and the removal operation of the step passage 10 can be performed manually. In FIG. 1, the passage assembly 10 </ b> A is formed by three step passages 10, but the passage assembly 10 </ b> A may be formed by two or four step passages 10. By increasing the number of connected stepped passages 10, a plurality of types of vehicles having different vehicle widths can be run on the passage assembly 10A.

  The step passage 10 has a main slope 21 as shown in FIGS. As shown in FIG. 4, the main slope 21 is formed of a steel material having a U-shaped cross section. The main slope 21 has an upper surface wall 21a and side walls 21b integrated on the left and right sides thereof. The dimension is about 20 cm, and the length dimension is about 100 cm. Therefore, when three step passages 10 are connected in the width direction, a passage assembly 10A having a width of 60 cm can be laid on the step portion 13 at a predetermined interval on the left and right. However, if the width dimension of each step passage 10 is made narrower than shown in the figure, one step passage 10 can be made lighter.

  As shown in FIG. 3, notches 22 are formed on the left and right side walls of the base end portion of the main slope 21 so as to contact the lower step surface 11, and the base end portion is fixed to protrude outward. A piece 23 is provided. An attachment hole 23a is formed in the fixed piece 23, and a fastener such as a pin or a bolt attached to the lower step surface 11 passes through the attachment hole 23a. The main slope 21 is fixed to the lower surface 11 by this fastener. A support column 24 made of a square shaped steel material is fixed to the lower surface of the front end portion of the main slope 21, and a flange portion 25 provided at the lower end of the support column 24 has a lower stage as shown in FIG. An attachment hole 25a through which a fastener 26 such as a pin or bolt attached to the surface 11 passes is formed.

  A sub slope 27 is rotatably connected to the tip of the main slope 21 via a hinge 28. The sub-slope 27 is formed by a steel material having a U-shaped cross section having the same width as that of the main slope 21, and has an upper surface wall 27 a and side walls 27 b integrated on both the left and right sides thereof, and the length dimension is 40 It is about 50 cm. The hinge 28 has a rotating plate 28a screwed to the distal end portion of the main slope 21 and a rotating plate 28b connected to this via a pin and screwed to the base end portion of the sub slope 27. The sub-slope 27 is rotatably connected to the distal end of the main slope 21 via a hinge 28 at the base end portion. As shown in FIG. 3, an abutting portion 29 that abuts on a corner portion of the upper step surface 12 is formed on the side wall 27 b of the tip portion of the sub slope 27, and between the main slope 21 and the upper step surface 12. Sub-slope 27 is passed over.

  Since the sub slope 27 is rotatable with respect to the main slope 21, as shown by a solid line in FIG. As shown by the chain line, it is set in any of the state where it is inclined upward and is stretched over the upper surface 12. Thereby, even if the height of the step portion 13 is different, the step passage 10 can be laid between the lower step surface 11 and the upper step surface 12. Since the sub slope 27 is attached to the main slope 21 by the hinge 28, the sub slope 27 having an arbitrary length can be connected to the main slope 21 by removing the sub slope 27 from the hinge 28.

  A transfer piece 31 made of the same member as the hinge 28 is attached to the tip of the sub-slope 27. The transfer piece 31 has a rotating plate 31a screwed to the tip of the sub-slope 27 and a pin attached thereto. And a rotation plate 31 b that is connected to the upper stage surface 12. The transfer piece 31 is disposed between the tip of the sub slope 27 and the upper stage surface 12. As shown in FIG. 2, the rotating plate 31 b is formed with an attachment hole 32 through which a fastener such as a pin or a bolt attached to the upper surface 12 passes, and the transfer piece 31 is attached to the upper surface 12 by the fastener. The sub slope 27 is fixed to the upper stage surface 12 by fixing to the upper surface 12. Thus, the vehicle can smoothly travel between the upper stage surface 12 and the sub slope 27.

  As shown in FIGS. 3 and 4, a clamp member 33 as a fastening member is attached to the support column 24, and the clamp member 33 has a fixed piece 33 a fixed to the support column 24, And a pivot piece 33b that is pivotably mounted via a hinge 34. The fixed piece 33a and the rotating piece 33b are formed with a concave surface into which the connecting bar 35 is inserted. By fastening the fixed piece 33a and the tip of the rotating piece 33b with the screw member 36, the clamp member 33 The connecting bar 35 is fastened. As a result, as shown in FIG. 1, a set of passage assemblies 10 </ b> A is assembled by connecting the three stepped passages 10 to each other by the connecting bar 35. On the upper surface walls 21a and 27a of the main slope 21 and the sub slope 27, rod-shaped anti-slip fittings 37 are extended and fixed in the width direction, respectively.

  In this way, the passage assembly 10A is assembled by connecting a plurality of stepped passages 10 with the connecting bar 35, and each stepped passage 10 can be transported manually by an operator. Set to weight. Accordingly, the stepped passages 10 are connected to each other by the connecting bar 35 in a state where the three stepped passages 10 are manually disposed in the stepped portions 13, and the fasteners are attached to the mounting holes 23 a of the fixing pieces 23. And the fixing piece 23 is fixed to the lower step surface 11, and the fastener 26 is passed through the mounting hole 25 a of the flange portion 25 of the support column 24 to fix the support column to the lower step surface 11. As a result, the passage assembly 10 </ b> A including the three step passages 10 is laid between the lower step surface 11 and the upper step surface 12 so as to straddle the step portion 13. The transfer piece 31 can be fixed to the upper step surface 12 by a fastener that passes through the mounting hole 32, but the main slope 21 of the step passage 10 is fixed to the lower step surface 11 at portions of the support column 24 and the fixing piece 23. Therefore, the mounting strength is sufficient, and the transfer piece 31 is fastened to the upper surface 12 as necessary. On the other hand, when removing the laid stepped passage 10, the stepped passage 10 can be removed by removing the respective fasteners and removing the connecting bar 35.

  In order to connect the plurality of stepped passages 10 with the connecting bar 35, each support column 24 is provided with a clamp member 33 having a fixed piece 33 a and a rotating piece 33 b. You may make it fasten with the volt | bolt couple | bonded with the support support | pillar 24 with a screw. In this case, the support strut 24 is provided with a nut instead of the clamp member 33 as a fastening member.

  FIGS. 5-7 has shown the level | step difference channel | path 10a which is other embodiment of this invention, In this level | step difference channel | path 10a, the same code | symbol is used for the member which is common in the member which comprises the level | step difference channel | path 10 mentioned above. Is attached.

  The step passage 10 a includes two intermediate slopes 41 and 42 in addition to the main slope 21 and the sub slope 27, and the main slope 21 and the sub slope 27 are connected via the two intermediate slopes 41 and 42. Has been. As described above, the step passage 10a is formed by the main slope 21, the two intermediate slopes 41 and 42, and the sub slope 27, so that the step passage is provided even when the height of the step portion 13 is the same as that shown in FIG. It is possible to lengthen the entire length of 10a and make the entire inclination angle a small angle.

  Since the step passage 10a has a long overall length, the intermediate slopes 41 and 42 are detachably connected to each other by the connecting portion 40, and the intermediate slope 41 and the main slope 21 are detachably connected to each other by the connecting portion 40. The intermediate slope 42 and the sub slope 27 are detachably connected to each other by a connecting portion 40. The width dimension of the main slope 21 and the like is about 20 cm in the same manner as the step passage 10 described above, while the length dimension is about 170 cm for the main slope 21 and about 125 cm for the intermediate slopes 41 and 42, and the sub slope. 27 is about 80 cm, which is longer than the step passage 10. However, since the four slopes constituting the step passage 10a are detachable, that is, separable from each other via the connecting portion 40, the operator can carry each of the four slopes manually.

  6 and 7 are enlarged views showing the connecting portion 40 of the main slope 21 and the intermediate slope 41. The side wall 21b at the tip of the main slope 21 protrudes from the upper surface wall 21a, and the left and right side walls 21b that protrude. A connecting pin 43 is disposed between them. The connecting pin 43 passes through the bracket 44 fixed to the support column 24 and is fixed to the bracket 44. On the other hand, an outer angle member 45 is fixed to the base end portion of the intermediate slope 41, and an inner angle member 46 is fixed to the angle member 45. The angle members 45 and 46 are connected to each other. An accommodation groove 47 for accommodating the pin 43 is formed. Two pairs of each of the angle members 45 and 46 are provided on both sides in the width direction of the main slope 21 via the bracket 44.

  Therefore, when the intermediate slope 41 is moved downward from the upper side with respect to the main slope 21, the connection pin 43 enters the housing groove 47, and the main slope 21 and the intermediate slope 41 are connected to each other via the connection pin 43. This connection operation can be performed at the site where the step passage 10a is assembled. A lock pin 48 is detachably attached to the angle members 45, 46 on one side in the width direction so as to cross the accommodation groove 47, and the connecting pin 43 is detached from the accommodation groove 47 by attaching this. Is prevented.

  6 and 7 show the structure of the connecting portion 40 for detachably connecting the main slope 21 and the intermediate slope 41. The same applies to the distal end portion of the intermediate slope 41 and the proximal end portion of the intermediate slope 42. A connecting portion 40 having a structure is provided, and a connecting portion 40 having a similar structure is also provided at the distal end portion of the intermediate slope 42 and the proximal end portion of the sub slope 27. Therefore, the connecting pin 43 is provided at the tip of the intermediate slope 41, and the connecting pin 43 is also provided at the tip of the intermediate slope 42.

  A support column 51 for supporting the intermediate slope 41 on the lower step surface 11 is attached to the front end portion of the intermediate slope 41. Similarly, a support column 52 for supporting this on the lower step surface 11 is attached to the front end portion of the intermediate slope 42. Is attached. Since the height between the tip of the intermediate slope 42 and the lower step surface 11 is higher than the height between the tip of the intermediate slope 41 and the lower step surface 11, a spacer 53 is attached to the lower side of the support column 52. It has been. Thereby, the support struts 51 and 52 can be formed by using the same length steel material. However, as the support struts 52 of the intermediate slope 42, a length steel material including the spacer 53 may be used.

  A clamp member 33 having the same structure as the above-described clamp member 33 is attached to the support columns 51 and 52. By fastening the connecting bar 35 with the clamp member 33, for example, three step passages 10a are formed. It connects and is laid in the level | step-difference part 13 similarly to the case shown in FIG. As a method of connecting the supporting struts 51 and 52 of the other step passages 10a adjacent in the width direction to each other by the connecting bar 35, the connecting bar 35 is connected to the supporting struts 51 and 52 by bolts as described above. In this case, nuts to which bolts are screwed are provided as fastening members on the support columns 51 and 52.

  As shown in FIG. 5, a handle 54 is attached to the intermediate slopes 41 and 42 and the sub-slope 27, and an operator grips the intermediate slopes 41 and 42 and the sub slope 27 at the handle 54 portion.

  In order to lay the step passage 10 a in the step portion 13, the main slope 21 is disposed on the lower step surface 11, and the base end portion of the intermediate slope 41 is connected to the distal end portion of the main slope 21. Next, the proximal end portion of the intermediate slope 42 is connected to the distal end portion of the intermediate slope 41, and the proximal end portion of the sub slope 27 is connected to the distal end portion of the intermediate slope 42. Thus, one step passage 10a is assembled, and the other two step passages 10a are assembled in the same manner. Next, the respective step passages 10a are fastened to the lower step surface 11 and the upper step surface 12 by fasteners, the intermediate slopes 41 of the three step passages 10a are connected to each other by the connecting bar 35, and the intermediate slopes 42 are connected to other steps. They are connected to each other by a connecting bar 35. In this manner, a passage assembly composed of the three step passages 10a is assembled. As shown in FIG. 1, the passage assembly is laid on the two sets of stepped portions 13 so as to correspond to the left and right wheels of the vehicle.

  In the step passage 10a shown in FIGS. 5 and 6, two intermediate slopes 41 and 42 are arranged between the main slope 21 and the sub slope 27, but one step depending on the height of the step portion 13. It is set to any of a form having an intermediate slope and a form having three or more intermediate slopes. When three intermediate slopes are used, a spacer having a height higher than that of the spacer 53 shown in FIG. 5B is used for a support column of the intermediate slope connected to the tip of the intermediate slope 42.

  When the sub slope 27 is directly connected to the main slope 21 without using the intermediate slopes 41 and 42, the step passage 10 having the form shown in FIGS. However, the structure of the connecting portion that connects the main slope 21 and the sub slope 27 is different from the step passage 10.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, in the step passage 10 shown in FIGS. 1 to 4, the main slope 21 and the sub slope 27 may be detachably connected by the connecting portion 40 shown in FIGS. 6 and 7. Moreover, you may make it attach the anti-slip | skid metal fitting 37 shown in FIG.2 and FIG.3 to the main slope 21, the intermediate slopes 41 and 42, and the sub slope 27 of the level | step difference channel | path 10a.

10, 10a Step passage 10A Passage assembly 11 Lower step surface 12 Upper step surface 13 Step portion 21 Main slope 23 Fixing piece 24 Support post 25 Flange portion 26 Fastener 27 Sub slope 28 Hinge 29 Contact portion 31 Transfer piece 33 Clamp member 34 Hinge 35 connecting rod 36 screw member 40 connecting portion 41, 42 intermediate slope 43 connecting pin 44 bracket 45, 46 angle member 47 storage groove 48 lock pin 51, 52 support column 54 handle

Claims (4)

A step passage laid between a lower step surface and an upper step surface higher than the lower step surface in a state where a plurality of vehicles are connected in the width direction, and guides the wheels of the vehicle,
A main slope in which a fixed piece fixed to the lower step surface is provided at the base end portion, and a support column supported by the lower step surface is fixed to the lower surface of the distal end portion;
A sub-slope that is pivotally connected to a distal end of the main slope at a proximal end portion, and a distal portion is formed with a contact portion that contacts the upper surface;
A connecting bar for connecting the support struts in the plurality of main slopes arranged adjacent to each other in the width direction and assembling a set of passage assemblies;
A step passage, wherein a plurality of the steps are connected so as to have a width larger than the wheel width of the vehicle and are laid between the lower step surface and the upper step surface.   2. The support column according to claim 1, comprising at least one intermediate slope connected between the main slope and the sub slope, and supported by the lower step surface on a lower surface of a tip portion of the intermediate slope. And the sub-slope is connected to the main slope via the intermediate slope. 3. The step passage according to claim 2 , wherein the intermediate slope is detachably connected to the main slope and the sub slope.   In the level | step difference channel | path of any one of Claims 1-3, attaching the transfer board arrange | positioned between the front-end | tip of the said subslope and the said upper step surface to the front-end | tip of the said subslope so that rotation is possible. A characteristic step passage.

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