JP6279370B2 - Transport cart - Google Patents

Description

  The present invention relates to a transport cart.

  Conventionally, electrical equipment equipped with various electrical components such as control switches and instruments, for example, a control panel having a weight of 500 [kg] to 700 [kg] as an object to be conveyed in an electrical room or the like When carrying in or carrying out from an electrical room etc., a control board is mounted on the dedicated pallet trolley as a conveyance trolley, and it is made to convey manually (for example, refer patent document 1). .

JP-A-2005-35320

  However, in the conventional pallet truck, if there is a step in the transport path, if the wheels of the pallet truck cannot get over the step, the pallet truck cannot be moved earlier, and the control panel is transported. It becomes impossible to do.

  Therefore, it is conceivable to form a slope by passing an iron plate, a control panel, etc. to the stepped portion, and move the pallet truck along the slope. However, since the wheel diameter of the pallet truck is small, the bottom of the pallet truck is the iron plate, the control panel. The pallet truck cannot be smoothly moved along the slope. Although it is conceivable to increase the diameter of the wheel of the pallet truck, if the diameter of the wheel of the pallet truck is increased, the position of the center of gravity of the pallet truck becomes high, and the control panel cannot be stably conveyed.

  The present invention solves the problems of the conventional pallet truck, and provides a transport cart that can transport the object to be transported easily and stably even if there is a step in the transport path. Objective.

  In the transport carriage according to the present invention, a frame for placing the object to be transported, wheels disposed on both sides of the frame, wheel support portions for supporting the wheels, and the frame with respect to the ground And an elevator for moving in the vertical direction.

  The wheel includes an annular tire, an annular support frame that slidably supports the tire in the circumferential direction, and a height of the frame relative to the wheel in the vertical direction. A height adjusting device is provided.

  Further, the frame and the height adjusting device are connected via the wheel support portion.

  According to the present invention, in the transport carriage, the frame for placing the object to be transported, the wheels disposed on both sides of the frame, the wheel support portions for supporting the wheels, and the frame on the ground And an elevator for moving in the vertical direction.

  The wheel includes an annular tire, an annular support frame that slidably supports the tire in the circumferential direction, and a height of the frame relative to the wheel in the vertical direction. A height adjusting device is provided.

  Further, the frame and the height adjusting device are connected via the wheel support portion.

  In this case, since the wheels are disposed on both sides of the frame, the diameter of the wheels can be made sufficiently large.

  Therefore, even if there is a step in the transport path, it is possible to easily get over the step by wheel without moving the steel plate, the control panel, etc. to the step portion, and the transport carriage can be moved. A conveyed product can be conveyed easily and reliably. In addition, since it is not necessary to perform a curing operation when carrying in or carrying out the object to be conveyed, work efficiency can be increased.

  Even if the diameter of the wheel is large, the position of the center of gravity of the transport carriage can be lowered by lowering the position of the frame with the height adjusting device, so that the object to be transported can be stably transported. .

  Further, by moving the frame in the vertical direction with respect to the ground by the elevator, it is possible to prevent the load of the transport carriage from being applied to the wheels, the height adjusting device, and the like. Therefore, not only the direction of the wheel can be easily changed, but also the height adjusting device can be easily operated.

It is a side view of the conveyance trolley in an embodiment of the invention. It is a top view of the conveyance trolley in an embodiment of the invention. It is a perspective view of the conveyance trolley in an embodiment of the invention. It is a perspective view which shows the front of the trolley | bogie unit in embodiment of this invention. It is a rear view of the trolley | bogie unit in embodiment of this invention. It is a perspective view of the 1st trolley | bogie part in embodiment of this invention. It is a top view which shows the support state of the wheel by the wheel support part in embodiment of this invention. It is a side view which shows the support state of the wheel by the wheel support part in embodiment of this invention. It is a perspective view which shows the support state of the wheel by the wheel support part in embodiment of this invention. It is a side view of the wheel in an embodiment of the invention. It is a 1st figure for demonstrating operation | movement of the height adjustment mechanism in embodiment of this invention. It is a 2nd figure for demonstrating operation | movement of the height adjustment mechanism in embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a side view of a conveyance carriage according to an embodiment of the present invention, FIG. 2 is a plan view of the conveyance carriage according to the embodiment of the present invention, and FIG. 3 is a perspective view of the conveyance carriage according to the embodiment of the present invention.

  In the figure, 11 is a transport carriage, 13 is an object to be transported by the transport carriage 11, in this embodiment, a control panel, and 14 is when the transport carriage 11 travels straight, that is, the transport carriage 11 The first carriage part disposed in the forward direction in the traveling direction, that is, the second carriage part 15 disposed rearward in the traveling direction of the transport carriage 11, and 18 is the work. It is a pulling member for a person to pull the transport carriage 11.

  The first and second carriage parts 14 and 15 are independently arranged to form the transport carriage 11, and the control panel 13 has a front end part at the first carriage part 14 and a rear end part at the first end. By being placed on the two carriage units 15, the carriages 11 are loaded.

  In this case, the first and second cart units 14 and 15 are arranged so as to be spaced apart from each other by the size of the control panel 13 and sandwich the control panel 13. Therefore, the control panel 13 can be loaded on the transport carriage 11 regardless of the dimensions of the control panel 13.

  Each of the first and second cart portions 14 and 15 includes a cart unit 16, and the pulling member 18 is detachably attached to the cart unit 16. The pulling member 18 is horizontally extended to be attached to the carriage unit 16, a horizontal portion 18 a that is horizontally extended, an inclined portion 18 b that is inclined obliquely upward from an end of the horizontal portion 18 a, and the A handle 18c attached to the tip of the inclined portion 18b is provided.

  In the present embodiment, the traction member 18 is attached to the trolley unit 16 of the first trolley part 14, but the traction member 18 is removed from the trolley unit 16 of the first trolley part 14, and the second trolley part. By attaching to 15 cart units 16, the transport cart 11 can run in the opposite direction.

  The carriage unit 16 is made of a metal material having sufficient strength, in this embodiment, a steel material, and is arranged to extend in the width direction of the carriage unit 16, on both sides of the frame 21, That is, the wheels 23 attached to the frame 21 at both ends in the width direction of the carriage unit 16 and the wheels 23 are rotatable (swinging) with respect to the frame 21 about a swinging shaft sh1 extending in the vertical direction. The wheel support 24 for rotating the wheel 23 in a predetermined direction around the rocking shaft sh1 when the transport cart 11 is turned, and the wheel 23 when the transport cart 11 is traveling straight ahead. A rotation restricting device 25 for restricting the rotation of the frame 21 is disposed at the center of the frame 21 and is a lift for moving the frame 21 in the vertical direction with respect to the ground. It comprises a jack 26 such as a machine.

  A front wheel is constituted by the wheel 23 arranged in the first carriage unit 14 and a rear wheel is constituted by the wheel 23 arranged in the second carriage unit 15.

  The rotation restricting device 25 includes an arm portion am1 formed so as to protrude radially outward from the swing shaft sh1, and a restricting bar 25a made of a rod-shaped body having a predetermined length.

  The arm portion am1 is rotated with the rotation of the wheel 23, and as shown in FIG. 2, the wheel 23 is placed in parallel with the traveling direction of the conveyance cart 11, thereby By placing the wheels 23 parallel to the traveling direction and placing the wheels 23 at right angles to the traveling direction of the transport carriage 11, the wheels 23 are placed at right angles to the traveling direction of the transport carriage 11.

  Therefore, with the wheels 23 placed parallel to the traveling direction of the transport carriage 11, the arms am1 are prevented from rotating by connecting the tips of the arms am1 via the restriction bar 25a. can do. As a result, the wheel 23 can be prevented from rotating.

  Therefore, a post pt1 as a first locking element for restricting rotation is provided at the tip of each arm portion am1, and a lock as a second engaging element for restricting rotation is provided at both ends of the restriction bar 25a. A hole h1 is formed, and by inserting the post pt1 into the locking hole h1, the arm portions am1 and the restriction bar 25a are locked, and the tips of the arm portions am1 are connected.

  The jack 26 is a bottom plate 43 disposed so as to be in contact with the ground, and is attached to the bottom plate 43, extends upward, and is disposed so as to be movable in the vertical direction. A screwing portion 45 for accommodating a worm shaft (not shown) to be screwed with the screw 44, a screw cover 46 for enclosing an upper portion of the screw 44, a handle 47 for rotating the worm shaft, and the like.

  When the operator rotates the handle 47, the worm shaft is rotated, the screw 44 screwed with the worm shaft is moved in the vertical direction, and the bottom plate 43 is moved in the vertical direction.

  Next, the frame 21 will be described. Since the cart units 16 in the first and second cart portions 14 and 15 have the same structure, only the frame 21 of the cart unit 16 disposed in the first cart portion 14 will be described.

  4 is a perspective view showing the front of the cart unit in the embodiment of the present invention, FIG. 5 is a rear view of the cart unit in the embodiment of the present invention, and FIG. 6 is a first cart unit in the embodiment of the present invention. FIG.

  The frame 21 is disposed at a predetermined position in the height direction of the carriage unit 16 and in the width direction of the carriage unit 16 so as to extend over a predetermined distance between the wheels 23, and the transport carriage 11 (FIG. A lower frame 27 as a lower frame constituting the bottom of 1), horizontal frames 28 and 29 as side frames formed by rising upward from both ends of the lower frame 27, and the lower frame A central frame 31 is provided as a central frame formed by rising upward from the center of the frame 27.

  On the upper surface of the lower frame 27, a mounting portion 27a for mounting the front end portion or the rear end portion of the control panel 13 is formed. Further, an overhanging portion 41 is formed at a position corresponding to the central frame 31 in the lower frame 27 so as to protrude toward the second carriage portion 15 over a predetermined length, and the control panel 13 is lowered while being conveyed. This prevents the frame 27 from coming off. An auxiliary placement portion 41a for placing the front end portion or the rear end portion of the control panel 13 is formed on the same surface as the placement portion 27a on the upper surface of the overhang portion 41.

  The central frame 31 connects a pair of columnar members 35, 36, which are formed to rise upward from two central portions of the lower frame 27, and the upper ends of the columnar members 35, 36. A bracket 48 for holding the screwing portion 45 of the jack 26 is attached to the lower part between the columnar members 35 and 36.

  By the way, the pulling member 18 is in a state where the tips of the arm portions am1 are connected by the restriction bar 25a so that an operator can pull the transfer cart 11 when moving the transfer cart 11. It is attached to the beam member 37 and the restriction bar 25a.

  For this purpose, a post pt2 as a first locking element for attaching the traction member is provided at the center in the length direction of the regulating bar 25a, and a second traction member attachment is provided at one end of the horizontal portion 18a of the traction member 18. A locking hole h2 as a locking element is formed. Further, a locking hole h3 as a third locking element for attaching the traction member is formed in the central portion in the length direction of the beam member 37, and a traction member mounting second is provided at the other end of the horizontal portion 18a of the traction member 18. 4 is formed as a locking hole h4. The post pt2 is fitted into the locking hole h2, and the pin pn1 is fitted into the locking holes h3 and h4, whereby the pulling member 18 can be attached to the carriage unit 16.

  A plate having a predetermined shape is formed between the lower frame 27 and the horizontal frames 28 and 29, between the lower frame 27 and the columnar members 35 and 36, and between the columnar members 35 and 36 and the beam member 37. The frames 21 are reinforced by being connected by stays st1 to st3 as reinforcing members formed by the above.

  Next, the wheel 23 will be described.

  FIG. 7 is a plan view showing a wheel support state by the wheel support portion in the embodiment of the present invention, FIG. 8 is a side view showing a wheel support state by the wheel support portion in the embodiment of the present invention, and FIG. The perspective view which shows the support state of the wheel by the wheel support part in embodiment of invention, FIG. 10 is the side view of the wheel in embodiment of this invention, FIG. 11 is operation | movement of the height adjustment mechanism in embodiment of this invention FIG. 12 is a second diagram for explaining the operation of the height adjusting mechanism according to the embodiment of the present invention.

  In the figure, reference numeral 23 denotes a wheel, and reference numeral 24 denotes a wheel support portion that supports the wheel 23 so as to be rotatable with respect to the swing shaft sh1.

  The wheel 23 includes an annular tire 51 made of an elastic material and an annular support frame 52 that is made of a metal material and supports the tire 51 so as to be slidable (movable in the circumferential direction). In the present embodiment, a tubeless tire 51 is used, but a tire with a tube can be used.

  The support frame 52 is provided with an outer plate 61 made of an annular body, a predetermined interval from the outer plate 61, an inner plate 62 made of an annular body, and inner peripheral edges of the outer plate 61 and the inner plate 62. A frame body 63 is provided between the tire body 51 and the tire body 51 so as to be rotatable (runnable) in a state of being sandwiched between the outer plate 61 and the inner plate 62. The

  The frame 63 has a polygonal shape, which is an octagonal shape in the present embodiment, and is formed of a band-shaped body having a predetermined width. The frame 63 extends horizontally in the uppermost part of the octagon. A certain upper frame portion Pu, a lower frame portion Pd that is a frame portion that extends horizontally in the lowermost part of the frame body 63, and a front frame portion that extends in the vertical direction at the foremost position in the frame body 63. Frame Pf, rear frame Pr that is a frame extending in the vertical direction at the rearmost side of the frame 63, a frame that connects the upper frame Pu and the front frame Pf and is inclined and extended. An inclined frame portion Pc1, which is a portion, connects the lower frame portion Pd and the front frame portion Pf, and an inclined frame portion Pc2, which is a frame portion extended by being inclined, the upper frame portion Pu and the rear frame portion Pr. Tilt frame part that is a frame part that is tied and tilted to extend c3, and an inclined frame portion Pc4 that is a frame portion that connects the lower frame portion Pd and the rear frame portion Pr, and is inclined and extended, and includes the upper frame portion Pu and the lower frame portion Pd in the support frame 52. In the present embodiment, a plurality of guide columns 68 and 69 as two columnar support portions are arranged so as to extend in the vertical direction and at a predetermined interval from each other. The frame 63 is reinforced.

  Rollers r1 and r2 are disposed radially outward of the inclined frame portions Pc1 and Pc3, and rollers r3 to r5 are rotatably disposed radially outward (downward) of the lower frame portion Pd. The tire 51 is rotatably supported by r1 to r5.

  In addition, convex portions s 1 and s 2 are formed on the inner peripheral edge of the lower portion of the outer plate 61 and the inner plate 62 so as to be adjacent to the guide columns 68 and 69, and the outer plate 61 and the inner plate 62. The projections s1 are connected by a connection pin p1, the projections s2 of the outer plate 61 and the inner plate 62 are connected by a connection pin p2, and the frame 63 is reinforced.

  Further, a height adjusting device 71 connected to the frame 21 via the wheel support 24 is disposed between the guide columns 68 and 69 so as to be movable in the vertical direction along the guide columns 68 and 69. . Then, the position of the frame 21 relative to the wheel 23 in the vertical direction, that is, the height of the frame 21 is adjusted by placing the height adjusting device 71 at a predetermined position in the height direction of the guide columns 68 and 69. Can do.

  For this purpose, pins ui (i = 1, 2,..., 5) as the first engaging elements for height adjustment are placed at a predetermined interval at a plurality of positions in the height direction of the guide column 68, In the present embodiment, it is formed by protruding at an equal pitch, and a second engagement element for height adjustment is provided at a position (a position having the same height) corresponding to each pin ui in the guide column 69. The pins vi (i = 1, 2,..., 5) are protruded.

  Further, the height adjusting device 71 has a rectangular shape, and is movable at two locations on both edges of the movable plate 73 and the movable plate 73 disposed between the guide columns 68 and 69. And guide rollers r11 to r14 which are arranged in contact with the guide columns 68 and 69 and are rotated in accordance with the movement of the movable plate 73 in the vertical direction, in the vicinity of both edges of the movable plate 73. A height-adjusting second shaft is disposed so as to be rotatable about the swing shaft sh2 and is engaged with a predetermined pin (pins u3 and v3 in FIG. 11) of the pins ui and vi. 3. Claw members 75 and 76 as fourth engagement elements, and an operation portion 78 for engaging and disengaging the pins ui and vi and the claw members 75 and 76 are provided. In the present embodiment, grooves n1 and m2 that receive the pins ui and vi when engaged with the pins ui and vi are formed at predetermined positions of the claw members 75 and 76, in the present embodiment.

  The operation unit 76 is disposed between the claw members 75 and 76 so as to be rotatable with respect to the movable plate 73, and is formed integrally with the swinging body 81 having a circular shape and the swinging body 81. The claw actuating portion 82 has a rectangular shape and is actuated by the pivoting member 81 to actuate the claw members 75 and 76, the end of the claw actuating portion 82, and the claw members 75 and 76. A spring 83 serving as an urging member disposed between the upper end of the oscillating member and a handle 84 formed so as to project outward in the radial direction at a predetermined location of the swinging body 81.

  When the handle 84 is rotated in the first direction, in the present embodiment, in the counterclockwise direction in FIG. 11, the spring 83 is extended and the pins u3 and v3 are accommodated in the grooves m1 and m2. Then, the claw members 75, 76 and the pins u3, v3 are engaged, and the height adjusting device 71 is placed at a predetermined position in the height direction of the guide columns 68, 69. At this time, by the urging force of each spring 83, each claw member 75, 76 is rotated about the swing shaft sh2 so that the lower end portion opens outward. Therefore, the engagement between the claw members 75 and 76 and the pins u3 and v3 is not released due to vibration or the like, and the claw members 75 and 76 and the pins u3 and v3 can be stably engaged. .

  In this state, when the handle 84 is rotated in the second direction, in the present embodiment, in the clockwise direction in FIG. 12, the spring 83 is contracted, and the claw members 75 and 76 are urged by the urging force. It will not be energized.

  Accordingly, the pins u3 and v3 are disengaged from the grooves m1 and m2 only by moving the movable plate 73 slightly upward, and the engagement between the claw members 75 and 76 and the pins u3 and v3 is released. The height of the frame 21 can be changed by moving the adjusting device 71 in the vertical direction along the guide columns 68 and 69.

  Next, the wheel support portion 24 will be described.

  The wheel support 24 includes a shaft support 88 attached to the horizontal frames 28 and 29, the swing shaft sh1 rotatably supported by the shaft support 88, the swing shaft sh1, and the height adjusting device. The connecting arm portion 85 as a first connecting portion for connecting the movable plate 73 of the 71 has a “U” shape, and a first connecting portion for connecting the lateral frames 28, 29 and the support frame 52 of the wheel 23. 2, a connecting pin 86 or the like as a connecting portion, and the arm portion am <b> 1 is attached to the connecting arm portion 85.

  Further, the first sleeve 95 protrudes upward on the bracket 87 at the lower end of the horizontal frames 28 and 29 and protrudes radially inward on the inner peripheral surface of the frame 63 of the wheel 23. Thus, a second sleeve 96 is formed, and both ends of the connecting pin 86 are rotatably inserted into the first and second sleeves 95 and 96.

  When the height of the frame 21 is adjusted by the movable plate 73, the connecting pins whose lengths at both ends are changed according to the difference in the height direction position of the first and second sleeves 95 and 96 are used. 86 is used. Further, in order to position the connecting arm portion 85 with respect to the first sleeve 95 in the rotation direction, the positioning rod 91 is inserted into and removed from the holes formed in the first sleeve 95 and the connecting arm portion 85. .

  Thus, since the wheel 23 can be rotated about the rocking shaft sh1, the direction of the wheel 23 can be changed, and the transport carriage 11 (FIG. 1) can be turned at a predetermined steering angle. Further, since the steering angle can be set to 90 [deg.] And the wheels 23 can be placed at right angles to the traveling direction of the transport carriage 11, even if the transport path is narrow, the direction of the wheels 23 can be changed arbitrarily. The control panel 13 can be conveyed in the direction of.

  Next, the operation of the transport carriage 11 having the above configuration will be described.

  First, the operator places the first and second cart portions 14 and 15 (FIG. 1) at positions corresponding to the dimensions of the control panel 13, and the first and second cart portions 14 and 15 have a handle 84. 12 is rotated in the clockwise direction in FIG. 12 to disengage the claw members 75 and 76 from the pins u3 and v3 in order to rotate the claw members 75 and 76, and the height adjusting device 71 is The frame 21 is moved downward and placed on the ground.

  Subsequently, the front end portion of the control panel 13 conveyed by a forklift or the like is placed on the first cart portion 14 and the rear end portion is placed on the second cart portion 15, and the first and second cart portions 14, The first and second cart portions 14 and 15 and the control panel 13 are bound to each other by a predetermined binding member so that the control panel 13 does not fall from 15.

  Next, by rotating the handle 47 of the jack 26 of the first and second carriage parts 14 and 15 and moving the bottom plate 43 downward from the initial position, the frame 21 is moved upward and placed at a predetermined position. . In this state, the handle 84 is rotated in the counterclockwise direction in FIG. 11 and the claw members 75 and 76 are engaged with the pins u3 and v3, whereby the frame 21 is moved by the height adjusting device 71. Hold in place.

  And the handle 47 of the jack 26 of the 1st, 2nd trolley | bogie parts 14 and 15 is rotated, the baseplate 43 is moved upwards, and it puts in the initial position.

  When the control panel 13 is loaded on the transport carriage 11 in this way, an operator grasps the pulling member 18 and pulls the first carriage unit 14, and other workers pull the control panel 13 and the second carriage 14. By pushing the cart unit 15, the transport cart 11 can easily travel and the control panel 13 can be transported.

  In the case of turning the transport carriage 11, the restriction bar 25 a of the rotation restriction device 25 is provided in at least one of the first and second carriage parts 14, 15, for example, the first carriage part 14. It is removed from the arm am1. Thereby, the direction of the wheel 23 of both ends can be changed, and the conveyance trolley | bogie 11 can be turned with a predetermined rudder angle.

  Thus, in the present embodiment, since the wheels 23 are disposed on both sides of the frame 21, the diameter of the wheels 23 can be made sufficiently large.

  Therefore, even if there is a step in the conveyance path, the step can be easily overcome by the wheel 23 without moving the iron plate, the panel, etc. to the step portion, and the conveyance carriage 11 can be moved. The control panel 13 can be transported easily and reliably. Moreover, since it is not necessary to perform the curing work when the control panel 13 is carried in or out, work efficiency can be increased.

  Even if the diameter of the wheel 23 is large, the position of the center of gravity of the transport carriage 11 can be lowered by lowering the position of the frame 21 by the height adjusting device 71, so that the control panel 13 can be stably transported. can do.

  Further, by moving the frame 21 in the vertical direction with respect to the ground by the jack 26, the load of the transport carriage 11 can be prevented from being applied to the wheel 23, the height adjusting device 71, and the like. Therefore, not only the direction of the wheel 23 can be easily changed, but also the height adjusting device 71 can be easily operated.

  In addition, this invention is not limited to the said embodiment, It can change variously based on the meaning of this invention, and does not exclude them from the scope of the present invention.

DESCRIPTION OF SYMBOLS 11 Carriage 13 Control board 21 Frame 23 Wheel 24 Wheel support part 26 Jack 51 Tire 52 Support frame 71 Height adjustment apparatus

Claims (5)

(A) a frame for placing an object to be conveyed;
(B) wheels disposed on both sides of the frame;
(C) a wheel support portion for supporting each wheel;
(D) having an elevator for moving the frame in a direction perpendicular to the ground;
(E) The wheel includes an annular tire, an annular support frame that slidably supports the tire in a circumferential direction, and a height of the frame relative to the wheel in the vertical direction. With a height adjustment device to adjust,
(F) The transport cart, wherein the frame and the height adjusting device are connected via the wheel support portion. (A) having first and second carriage parts arranged at a distance according to the dimension of the object to be conveyed and arranged to sandwich the object to be conveyed;
(B) One end of the conveyed object is placed on the frame of the first carriage unit,
(C) The transport carriage according to claim 1, wherein the other end of the transported object is placed on a frame of a second cart section. (A) A columnar support portion is disposed in the support frame so as to extend in the vertical direction,
(B) The transport carriage according to claim 1 or 2, wherein the height adjusting device is movably disposed along the columnar support portion.   The said wheel support part is a conveyance trolley of any one of Claims 1-3 which support a wheel so that rotation is possible centering | focusing on the rocking | fluctuation axis | shaft arrange | positioned in the perpendicular direction.   The conveyance cart according to any one of claims 1 to 4, further comprising a rotation restricting device that restricts rotation of the wheel during straight traveling.

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