JP2019104495A - Carriage truck - Google Patents

Abstract

To provide a carriage truck capable of grasping the presence of a brake rapidly.SOLUTION: Provided is a carriage truck having a truck body and a rotation caster 2 mounted on a rear side of a corner part of the truck body. The rotation caster 2 has: a yoke 2c; a wheel 2a gripped rotatably by the yoke 2c; and a brake pedal 17 for fixing the rotation of the wheel 2a. The brake pedal 17 has an operation part 18 depressed by foot in braking. When a brake is released and a state in which the wheel is directed in a cross direction is seen in a plain view, the operation part 18 is positioned exposed from a surrounding of the truck body.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a transport carriage.

As a carriage for placing and transporting a load, the applicant has proposed a carriage as shown in the following patent document, which can carry and move in a stable state even in a place without flatness.
JP, 2009-220653, A

  This is, as shown in FIGS. 10 to 12, a frame 6 made of a square pipe made of iron or aluminum alloy and a base 7 which is a mounting plate made of iron or aluminum alloy joined to the upper portion of this frame 6. A caster 2 on which a wheel 2a is rotatably mounted on a pedestal 2b is provided on the lower side of the configured bogie main body.

  The frame 6 is formed by welding square pipes in vertical and horizontal directions to form a grid by welding, and on the lower surface of the grid-like frame 6, the mounting plate of the caster 2 is attached to the section 8 where attachment of the caster 2 is expected. Attach 9 with the blind rivet 10. The total number of mounting points of the mounting plate 9 is six, excluding the total of six sections 8 in the left and right center.

  In this way, in the carriage with the casters 2 attached to at least the four corners of the back of the carriage main body having the base 7 mounted on the frame 6, the inside of the outline connecting the pivot casters 2 attached to the at least four corners is used Two or more casters 2 were provided in a column in the same direction as the direction of travel. The caster 2 is a swivel caster or a fixed caster.

  Next, a method of crossing over the groove α will be described with reference to FIG. In the figure, 3 is a hand rod, and even if the left and right front wheels of the caster 2 fit in the groove α as shown in FIG. The truck body can be supported in a stable state with a total of four wheels with two rear wheels of the caster 2, and the truck body does not tilt.

  Further forward, reaching the position shown in FIG. 8 (c), when the front one of the two casters 2 in the central column is fitted in the groove α, the four castors 2 and the central column The bogie main body can be stably supported by a total of five wheels of the remaining rear one caster 2.

  Finally, even if the two wheels 2 of the left and right rear wheels fit in the groove α, in this state, with the two wheels 2 of the front central column and the wheels 2 of the left and right front wheels, a total of four The carriage body can be supported in a stable state, and in any case, the carriage body can not be inclined, and the groove α can be safely climbed sequentially.

  Of the six wheels of the caster 2, those disposed at the four corners of the bogie main body are attached with the corner members 5 for attaching the hand rod 3 thereto, so the hand rod 3 and the corner members 5 are It is attached to the place where it entered from the drooping part to the inside of the bogie main body by the amount of "turning eccentric radius + caster radius" so that it can avoid and rotate.

  On the other hand, as shown in FIG. 14, the caster with a brake is such that the foot-type brake pedal 33 is taken out from the yoke 2c of the caster 2 coupled to the mounting plate 9. It became lower side and it was difficult to confirm its existence because it was hidden in the truck body.

  An object of the present invention is to solve the disadvantages of the prior art and to provide a transport carriage capable of quickly grasping the presence of a brake.

  In order to achieve the above object, the present invention is, firstly, a transport bogie having a bogie main body and a swivel caster mounted on the back side of a corner portion of the bogie main body, the swivel caster comprising: a yoke; And a brake pedal for fixing the rotation of the wheel, the brake pedal having an operating portion which steps on the foot at the time of braking, and at the time of releasing the brake, When the state in which the wheel is directed in the front-rear direction is viewed in a plan view, the operation portion is positioned to be visible from the periphery of the bogie main body.

  Second, the brake pedal is swingable, and when the brake is depressed by a foot and the wheel is directed in the front-rear direction as viewed in plan, the outer edge of the operation portion Is positioned closer to the periphery of the truck body than at the time of releasing the brake.

  Thirdly, when the brake pedal is swingable and the brake is depressed by a foot and the wheel is directed in the front and rear direction in plan view, the operation unit is configured to Positioned so that it does not appear from the periphery of the bogie main body so as to overlap with the bogie main body; Fourthly, the bogie main body has a frame, and the corner part is provided with colored parts of different colors from the frame on the outer periphery When the brake is released and the wheels are directed in the front-rear direction as viewed in a plan view, the operation portion and the colored portion are positioned back and forth; fifth, the bogie main body is a frame And the corner portion is provided with a colored portion of a color different from that of the frame on the outer periphery, and the brake pedal and the colored portion are up and down when the wheel is directed in the front-rear direction as viewed from the side Sixthly, said The rake pedal has a U-shape having the closed end as the operating portion, and when the brake is depressed by a foot, the wheel is positioned in the central gap of the U-shape. Seventh, when the brake is released And the brake pedal is inclined downward from the pivotally supported end toward the other end when the wheel is directed from the front to the rear and viewed from the side, and then the brake pedal jumps upward. Eighth, the gist is that the operation portion has a substantially plate-like step piece protruding in a direction away from the carriage main body.

  According to the present invention, by coloring the corner portion where the caster with brake is provided on the back side among the corner portions, if this coloring is visually observed, it is known which caster under the corner portion is the one with the brake. You can know immediately.

  In addition, the brake pedal is viewed from the side orthogonal to the traveling direction of the transport carriage, and the brake pedal is visually recognized on the lower side of the coloring. You can grasp the existence quickly.

  Furthermore, since the outer periphery of the colored portion is located outside the side of the frame, it can be highlighted.

  In addition, since the brake pedal is viewed from above, the presence of the brake can be grasped quickly.

  As described above, the transport carriage of the present invention can quickly grasp the presence of the brake.

  Hereinafter, the embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view showing an embodiment of a transport carriage according to the present invention at brake release, FIG. 2 is a plan view at the same time, FIG. 3 is a side view at brake, and FIG. The wheel 2a is rotatably mounted on the pedestal 2b on the lower side of the bogie main body configured by the square pipe frame 6 and the base 7 which is a mounting plate made of iron or aluminum alloy joined to the upper part of the frame 6 The caster 2 attached is provided.

  As shown in FIG. 2 and FIG. 3, the frame 6 is a square pipe made of iron or aluminum alloy, and the base 7 is a mounting plate made of iron or aluminum alloy joined to the upper part of the frame 6. The caster 2 which attached the wheel 2a rotatably to the base 2b was provided below the trolley | bogie main body.

  The frame 6 is formed by welding square pipes in vertical and horizontal directions to form a grid by welding, and on the lower surface of the grid-like frame 6, the mounting plate of the caster 2 is attached to the section 8 where attachment of the caster 2 is expected. Attach 9 with the blind rivet 10 (see FIG. 10). The total number of mounting points of the mounting plate 9 is six, excluding the total of six sections 8 in the left and right center.

  The caster 2 is attached to at least the four corners of the back surface of the carriage main body, and inside the outline connecting the swivel caster 2 attached to at least the four corners, in a column in the same direction as the traveling direction The caster 2 of the wheel or more was provided.

  At the four corners of the bogie main body, the vertical and horizontal square pipes constituting the frame 6 are formed of an extruded material such as aluminum, and joined by the corner member 5 whose entire shape is a flat L-shape.

  The details of the corner member 5 are shown in FIG. 8 and FIG. 9, and the insertion hole 12 having an arc-shaped outer peripheral surface is formed in the corner of the L-shape, and the insertion hole 12 is inserted. Side wall members 13a and 13b opposed to each other as mounting portions of the frame 6 in the direction perpendicular to each other are vertically projected from the 12 points.

  Of the side wall members 13a and 13b, the side wall member 13b located outside is continuous with the outer peripheral portion of the insertion hole 12, and the connection portion with the insertion hole 12 has the same height as the insertion hole 12 At the end, the base is formed in the inclined portion 14 with substantially the same height as the frame 6.

  At the bottom of the insertion hole 12, a support plate 12a is provided to prevent the push rod 3 from falling off.

  As described above, in order to attach the corner member 5 to the frame 6, the frame 6 is inserted into the gap between the facing side wall members 13a and 13b. In this case, since the upper and lower openings are formed between the side wall members 13a and 13b, even if the frame 6 is inserted between the side wall members 13a and 13b, on the contrary, vertical and horizontal located in the corner portion The corner member 5 may be inserted into the frame 6. Also, the insertion direction can be made from either the top or the bottom.

  With the frame 6 inserted between the side wall members 13a and 13b, the corner member 5 is fixed to the frame 6 with rivets 15 or bolts. Since the connection with the frame 6 uses a rivet 15 or the like, the frame 6 does not have to be made of the same material with respect to the aluminum corner member 5.

  As described above, the carriage having the corner member 5 attached thereto has the corner member 5 having an arc-shaped outer peripheral portion attached to the corner portion that easily contacts other objects, so the impact is absorbed and the corner member 5 is damaged. In the case of replacement, it can be removed simply by removing the rivet 15 or the like, and the new corner member 5 can be easily replaced since it is only necessary to fix it with the rivet 15.

  Moreover, the insertion hole 12 of the push rod 3 is formed in the corner member 5, and the excessive moment from the push rod 3 applies to the insertion port here. In view of the fact that the corner member 5 is provided not only with the contact with other things but also with a portion that is easily deformed as described above, it is effective that the corner member 5 can be easily replaced. is there.

  By the way, the caster 2 has caster with brake and caster without brake, and the caster with brake is provided on both front and / or rear side, or both on left and right or in one of the four corners of the truck body. Be

  According to the present invention, the colored portion 1 is provided by coloring (for example, red or green) a corner portion provided with a caster with a brake on the back side among corner portions at four corners of the bogie main body provided with the caster.

  The colored portion 1 is, for example, baked if the corner portion is an aluminum alloy material, and the entire surface of the side wall member 13b located outside of the side wall members 13a and 13b of the corner member 5 forming the corner portion Apply.

  Thus, the one corner portion is provided with the insertion hole 12 into which the push rod is inserted from the upper side, and the colored portion extending in the direction orthogonal to each other from the forming portion of the insertion hole 12 It will be provided.

  As shown in FIGS. 5 to 7, the caster with a brake includes a yoke (gripping body) 2 c, a wheel 2 a, a brake shoe 16, and a brake pedal 17.

  The yoke (gripping body) 2c is formed by bending a metal plate, is mounted below the mounting plate 9, and the brake shoe 16 is formed by bending a metal plate. Not shown).

  The brake pedal 17 is formed by bending a metal plate, and the brake shoe 16 is pressed against the wheel 2a to fix the wheel 2a by stepping and swinging the operation portion 18 at one end.

  The brake pedal 17 is formed of a U-shaped arm having the operation portion 18 at one end as a closed end and a gap 19 formed at the center, the arm is curved to draw a gently concave shape, and the operation portion 18 is an end Formed so as to bounce up.

  In this manner, when the brake pedal 17 is released from the brake and the wheel is directed in the front-rear direction as viewed from the side, it is inclined downward from the pivotally supported end toward the other end. After that, it is shaped to jump upward.

  In addition, when the brake is depressed by a foot, the wheel 2a is positioned so as to enter the air gap 19 of the brake pedal 17 with the wheel positioned in the central gap of the U-shaped arm.

  Further, the step piece 20 is provided in a forwardly projecting manner in the operation portion 18 formed so as to bounce up. The foot 20 is a substantially plate-like member that protrudes in a direction away from the carriage body.

  And, as shown in FIG. 1 and FIG. 2, when the wheel 2a is turned in the front-rear direction at the time of releasing the brake, as shown in FIG. 1 and FIG. And

  When the traveling direction of the transport carriage is the longitudinal direction of the transport carriage, the brake pedal 17 is visually recognized below the colored portion when viewed along the traveling direction of the transport carriage.

  As shown in FIG. 2, the swing caster with the brake is attached to the carriage main body via the attachment plate 9, and the clearance between the frame 6 and the attachment plate 9 passes through the clearance when the transport carriage is viewed in plan view. A part of the brake pedal 17 is visually recognized.

  As for the brake operation, if you depress the brake pedal 17 with your foot, the brake pedal 17 is pushed down and the brake shoe 16 is pressed against the wheel 2a to fix the wheel 2a. For releasing the brake, press the brake pedal 17 with your foot. , The engagement of the brake shoe 16 with the wheel 2a is released.

  When the caster with a brake is attached to at least one of the four corners on the back of the bogie main body, the corner member 5 for attaching the handlebar 3 is attached to the four corners. It is attached to the place where it entered from the drooping part to the inside of the bogie main body by the part of "turning eccentric radius + caster radius" so that it can rotate avoiding 5.

  As a result, in the direction of the wheel 2a or in the brake state, the position of the brake pedal 17 is not known because it is hidden behind the back of the dolly body. That is, the brake pedal 17 is hidden behind the back of the bogie main body in the direction of the wheel and the brake state, and the position of the brake pedal can not be known, and the wheel turned forward and backward when the brake was depressed by a foot. When the state is viewed in a plan view, the operation unit is positioned so as not to appear from the periphery of the carriage body and to overlap with the carriage body.

  Therefore, the coloring unit 1 can recognize the corner portion provided with the caster with a brake on the back side among the corner portions of the four corners of the bogie main body provided with a caster, thereby recognizing the presence of the caster with a brake. When 2a faces in the front-rear direction, the brake pedal 17 appears from the periphery of the truck body, so that the brake can be applied reliably.

  In addition to the ones attached to at least the four corners of the peripheral portion of the back surface of the carriage main body, the transport carriage is inside a contour connecting the swivel casters 2 attached to at least the four corners in the same direction as the traveling direction in use. Although two or more wheels are provided in the column, the invention is not limited thereto. For example, as described in JP-A-2009-227042, both left and right sides in the longitudinal direction of the flat rectangular carriage body In the transport carriage having the pivot caster 2 pivotally mounted on each of three wheels in a row, the middle caster of the three wheels is disposed outside the front and rear two pivot casters, or The present invention can be applied to various types, such as one in which casters are provided only in at least four corners of the periphery of the back surface.

It is a side view at the time of brake release which shows one embodiment of the transport truck of the present invention. It is a top view at the time of brake release which shows one embodiment of the transport truck of the present invention. It is a side view at the time of a brake showing one embodiment of a transport truck of the present invention. It is a top view at the time of a brake showing one embodiment of a transport truck of the present invention. It is a side view of a caster with a brake used by the present invention. It is a front view of a caster with a brake used by the present invention. It is a bottom view of a caster with a brake used by the present invention. It is a top view of a corner member. It is a side view of a corner member. It is a bottom view of a transport truck. It is a top view of a transport truck. It is a side view of a transport truck. It is explanatory drawing which shows the use condition of a conveyance trolley. It is a side view of the conventional caster with a brake.

DESCRIPTION OF SYMBOLS 1 coloring part 2 caster 2a wheel 2b base 2c yoke 3 hand rod 5 corner member 6 frame 7 base 8 section 9 mounting plate 10 blind rivet 11 bolt and nut 12 insertion hole 12a support plate 13a, 13b side wall member 14 inclined portion 15 rivet 16 Brake shoe 17 Brake pedal 18 Operating part 19 Air gap 20 Footstep piece 33 Brake pedal

Claims (8)

  A transport bogie having a bogie main body and a swivel caster mounted on the back side of a corner portion of the bogie main body, the swivel caster comprising a yoke, a wheel rotatably held by the yoke, and rotation of the wheel A brake pedal for fixing the brake pedal, and the brake pedal has an operation portion which is depressed by a foot at the time of braking, and a state in which the wheel is directed in the front-rear direction when the brake is released is viewed in plan view The transport truck according to claim 1, wherein the operation unit is located from the periphery of the truck body.   The brake pedal is swingable, and when the brake is depressed by a foot and the wheel is directed in the front-rear direction when viewed from a plan view, the outer edge of the operation portion is released The transport truck according to claim 1, wherein the transport truck is located closer to the periphery of the truck body.   The brake pedal is swingable, and when the brake is depressed by a foot and the wheel is directed in the front-rear direction as viewed in a plan view, the operation unit is a periphery of the bogie main body The transport truck according to claim 1 or 2, wherein the transport truck is positioned so as to overlap with the truck body without revealing from the above.   The bogie main body has a frame, and the corner portion is provided with a colored portion of a color different from that of the frame on the outer periphery, and a plan view shows a state in which the wheel is directed in the front and rear direction When the said operation part and the said coloring part are located in order, the conveyance trolley in any one of the Claims 1 thru | or 3.   The bogie main body has a frame, and the corner portion is provided with a colored portion of a color different from that of the frame on the outer periphery, and the brake pedal is viewed from the side when the wheel is directed in the front-rear direction. The transport carriage according to any one of claims 1 to 4, wherein the colored portion is located above and below.   The brake pedal is U-shaped having a closed end as the operation portion, and the wheel is positioned in a central gap of the U-shape when the brake is depressed by a foot. A transport carriage according to any of the preceding claims.   When the brake is released and the wheel is viewed in a side view in a front view, the brake pedal is inclined downward as it is supported from one end to the other end, and then the upper side is moved upward. The transport carriage according to any one of claims 1 to 6, characterized in that it is shaped so as to jump upward. The transport truck according to any one of claims 1 to 7, wherein the operation portion has a substantially plate-like foot that protrudes in a direction away from the truck body.