JP2015024822A - Transport carriage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transport carriage in which casters are attached to at least four corners of a peripheral part of a rear surface of a carriage body, which allows a user to easily recognize a position of a caster with brake, which can brake even at a slope surely and quickly for preventing accident.SOLUTION: Provided is the transport carriage in which casters 2 are attached to at least four corners of a peripheral part of a rear surface of a carriage body, and among the corner parts of the four corners of the carriage body, the corner part having a caster 2 with brake on its rear side is a colored part 1.

Description

  The present invention relates to a transport cart.

As a transport cart for carrying and transporting a load, the applicant has proposed a transport cart that can be transported and moved in a stable state even in places without flatness, as shown in the following patent document.
JP 2009-220653 A

  As shown in FIGS. 10 to 12, 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. A caster 2 in which a wheel 2a is rotatably attached to a pedestal 2b is provided on the lower side of the configured carriage main body.

  The frame 6 is formed in a grid shape by joining square pipes in the vertical and horizontal directions, and on the lower surface of the grid-shaped frame 6, the mounting plate of the caster 2 is placed in a section 8 where the caster 2 is expected to be mounted. 9 is attached with a blind rivet 10. The total number of attachment locations of the attachment plate 9 is 6 except for the total 6 locations of the right and left central sections 8.

  In the transport carriage in which the casters 2 are attached to at least the four corners of the back surface of the carriage body having the base 7 attached on the frame 6 as described above, the carriage is used inside the contour line connecting the turning casters 2 attached to the at least four corners. Two or more casters 2 were provided in a column in the same direction as the traveling direction at the time. This caster 2 is a turning caster or a fixed caster.

  Next, a method of getting over the groove α will be described with reference to FIG. In the figure, reference numeral 3 denotes a hand bar. Even if the left and right front wheels of the caster 2 are fitted in the groove α as shown in FIG. The bogie body can be supported in a stable state with a total of four wheels with the rear two wheel casters 2, and the bogie body does not tilt.

  When the vehicle further advances and reaches the position of FIG. 8 (c), and the front one of the two casters 2 in the central column is fitted in the groove α, the four casters 2 on the front, rear, left and right and the central column The cart body can be supported in a stable state by a total of five wheels including the remaining one rear caster 2.

  Finally, even if the two casters 2 of the left and right rear wheels are fitted in the groove α, in this state, there are a total of four wheels, that is, the two casters 2 in the center column in front and the two casters 2 in the left and right front wheels. The trolley body can be supported in a stable state, and in any case, the trolley body does not tilt and can safely cross the groove α sequentially.

  By the way, the caster 2 includes a caster with a brake and a caster without a brake. Usually, the caster with a brake is provided on either one or both of the front and rear of the four corners of the carriage body.

  Among the six-wheel casters 2, those arranged at the corners of the four corners of the carriage main body are attached with corner members 5 for inserting the hand rods 3, so that the hand rods 3 and the corner members 5 are attached. It can be attached to the part that enters the inside of the cart body from the hanging part by the amount of “swivel eccentric radius + caster radius” so that it can be rotated.

  On the other hand, as shown in FIG. 14, the caster with brake is such that a foot pedal brake pedal 33 is provided from the yoke 2c of the caster 2 coupled to the mounting plate 9. It was difficult to confirm the existence that it was on the lower side and was hidden in the cart body.

  Therefore, forgetting to apply the brake may occur, which may lead to an accident.

  The purpose of the present invention is to eliminate the inconveniences of the conventional example, easily recognize the position of a caster with a brake, apply a brake quickly and reliably even on a slope, and prevent accidents from occurring. To provide a dolly.

  In order to achieve the above object, the present invention according to claim 1 and claim 2 is a transport cart in which casters are attached to at least four corners of the peripheral portion of the back surface of the cart body. The gist is that the corner portion provided with the attached caster is colored, and that the coloring reaches part of the side surface of the main body of the carriage.

  According to the first and second aspects of the present invention, among the corner portions, the corner portion provided with a caster with a brake on the back side is colored. However, it is possible to know immediately whether the vehicle is equipped with a brake.

  According to a third aspect of the present invention, the corner portion is formed by a corner member, and the corner member is provided with a side wall member projecting in an L shape in plan view in parallel with the side surface of the carriage body, and the coloring is performed on the side wall. The gist is to do the entire surface of the member.

  According to this invention of Claim 3, since the said coloring is performed also about the side wall member located in the outer side among the side wall members of a corner member, since it covers a comparatively wide area, it can be made conspicuous.

  According to a fourth aspect of the present invention, the caster with a brake has a brake pedal, and the brake pedal is visually recognized below the coloring when viewed in a side view that is a direction orthogonal to the traveling direction of the transport carriage. It is the gist of what is done.

  According to the fourth aspect of the present invention, since the brake pedal is viewed from the side which is a direction orthogonal to the traveling direction of the transport carriage, the brake pedal is visually recognized below the colored portion. The presence of the brake can be quickly grasped corresponding to the coloring of the.

  As described above, the transport cart of the present invention can easily recognize the location of casters with brakes in a transport cart with casters attached to at least the four corners of the back surface of the cart body. The brake can be applied to prevent accidents.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view when a brake is released showing an embodiment of a transport carriage of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a side view of a brake, FIG. 4 is a plan view of the same, and is made of iron or aluminum alloy A wheel 2a is rotatable on a pedestal 2b on the lower side of a cart body composed of a frame 6 made of a square pipe and a base 7 which is a mounting plate made of iron or aluminum alloy joined to the upper portion of the frame 6. An attached caster 2 is provided.

  In addition to the casters 2 attached to at least the four corners of the peripheral portion of the rear surface of the bogie body, the casters 2 are arranged in a column in the same direction as the traveling direction at the time of use inside the contour line connecting the swivel casters 2 attached to at least the four corners. A caster 2 having a ring or more was provided.

  At the corners of the four corners of the carriage main body, vertical and horizontal square pipes constituting the frame 6 are formed of extruded shapes made of aluminum or the like, and joined by a corner member 5 whose overall shape is a flat L shape.

  The details of the corner member 5 are shown in FIGS. 8 and 9, and an insertion hole 12 having a cylindrical shape and an arcuate outer peripheral surface is formed in an L-shaped corner portion. Side wall members 13a and 13b that face each other as attachment portions of the frame 6 in a direction orthogonal to each other from 12 locations are vertically projected.

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

  At the bottom of the insertion hole 12, a support plate 12a for preventing the push bar 3 from falling off is provided.

  In order to attach the corner member 5 to the frame 6 as described above, the frame 6 is inserted into the gap between the opposing side wall members 13a and 13b. In this case, since the upper and lower sides 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, the vertical and horizontal positions located at the corners are opposite to this. The corner member 5 may be inserted into the frame 6. Also, the insertion direction can be performed from either the top or bottom.

  In a state where the frame 6 is 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 rivet 15 or the like is used for the connection with the frame 6, 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 transport cart with the corner member 5 attached has the corner member 5 having an arcuate outer peripheral portion attached to a corner portion that is likely to come into contact with other objects, so that the impact is absorbed and the corner member 5 is damaged. When exchanging, for example, it can be removed simply by removing the rivet 15 and the like, and the new corner member 5 can be simply exchanged because it is only necessary to fix it with the rivet 15.

  In addition, an insertion hole 12 for the hand bar 3 is formed in the corner member 5, and an excessive moment from the hand bar 3 is applied to the insertion port. Considering that the corner member 5 is not only in contact with other objects but also has a portion that is easily deformed from the inside as described above, it is effective that the corner member 5 can be easily replaced. is there.

  By the way, the caster 2 includes a caster with a brake and a caster without a brake, and the caster with a brake is provided on either one of the front and rear left and right or one of the four corners of the carriage body.

  In the present invention, among the corner portions at the four corners of the carriage main body on which the casters are provided, the corner portions on which the casters with brakes are provided on the back side are colored (for example, red or green).

  The coloring 1 is performed by baking or the like when the corner portion is made of an aluminum alloy material, and is applied to the entire side wall member 13b located on the outer side among the side wall members 13a and 13b of the corner member 5 forming the corner portion.

  As shown in FIGS. 5 to 7, the caster with 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, and is attached below the mounting plate 9. The brake shoe 16 is formed by bending the metal plate, and the brake lining (see FIG. (Not shown).

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

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

  During braking, the wheel 2a is positioned so as to enter the gap 19 of the brake pedal 17.

  Further, the operation piece 18 formed so as to be flipped up is provided with a foot piece 20 protruding forward.

  As shown in FIGS. 1 and 2, the brake pedal 17 is the one in which the operation unit 18 is exposed from the periphery of the main body of the carriage in a plan view when the wheel 2 a is directed in the front-rear direction when the brake is released. It was.

  When the brake pedal 17 is depressed with the foot, the brake pedal 17 is depressed, the brake shoe 16 is pressed against the wheel 2a to fix the wheel 2a, and the brake pedal 17 is lifted with the foot to release the brake. 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 of the back surface of the carriage body, the corner member 5 for inserting the hand bar 3 is attached to the four corners. In order to be able to rotate while avoiding 5, it is attached to a place that enters the inside of the cart body from the hanging part by the amount of “swivel eccentric radius + caster radius”.

  As a result, in the direction of the wheel 2a and the brake state, the position of the brake pedal is not known because it is hidden behind the back surface of the carriage body.

  Therefore, by coloring 1, among the four corners of the main body of the carriage on which the casters are provided, the corner provided with the casters with brakes can be grasped, whereby the presence of the casters with brakes can be recognized, and the wheels 2a are released when the brakes are released. Since the brake pedal 17 is exposed from the periphery of the bogie body when is directed in the front-rear direction, the brake can be reliably applied.

  In addition to the one attached to at least the four corners of the peripheral portion of the back surface of the carriage body, the transporting carriage is located at the inner side of the contour line connecting the swiveling casters 2 attached to at least the four corners, and has the same direction as the traveling direction during use. Although two or more casters are provided in the column, the present invention is not limited to this. For example, as disclosed in Japanese Patent Application Laid-Open No. 2009-227042, the left and right sides in the longitudinal direction of a flat rectangular cart body In each of the transport carts in which the three swivel casters 2 are axially mounted, the middle caster of the three-wheel casters is arranged outside the front and rear two swivel casters, The present invention can be applied to various types such as those provided with casters only at least at the four corners of the peripheral portion of the back surface.

It is a side view at the time of the brake release which shows one Embodiment of the conveyance trolley | bogie of this invention. It is a top view at the time of the brake release which shows one Embodiment of the carrier truck of this invention. It is a side view at the time of the brakes which shows one embodiment of the transportation cart of the present invention. It is a top view at the time of the brakes which shows one Embodiment of the conveyance trolley | bogie of this invention. It is a side view of the caster with a brake used by this invention. It is a front view of the caster with a brake used by this invention. It is a bottom view of the caster with a brake used by this 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 cart. It is a top view of a conveyance trolley. It is a side view of a transport cart. 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 2 Caster 2a Wheel 2b Base 2c Yoke 3 Hand bar 5 Corner member 6 Frame 7 Base 8 Compartment 9 Mounting plate 10 Blind rivet 11 Bolt and nut 12 Insertion hole 12a Support plate 13a, 13b Side wall member 14 Inclined part 15 Rivet 16 Brake Shoe 17 Brake pedal 18 Operation part 19 Gap 20 Footpiece 33 Brake pedal

Claims (4)

  A transport cart in which casters are attached to at least four corners of a peripheral portion of the back surface of the cart body, and a corner portion of the four corners of the cart body having colored casters with brakes is colored.   The transport cart according to claim 1, wherein the coloring reaches a part of a side surface of the cart body.   The corner portion is formed of a corner member, and the corner member is provided with a side wall member projecting in an L shape in plan view in parallel with the side surface of the carriage body, and the coloring is performed on the entire surface of the side wall member. The transport cart according to claim 2. The caster with a brake has a brake pedal, and the brake pedal is visually recognized on the lower side of the coloring when viewed in a side view which is a direction orthogonal to the traveling direction of the transport carriage. A transport cart according to any of the above.

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