JP2013001208A - Roller carriage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roller carriage enabling the height thereof to be adjusted by a simple operation without using other tool for adjustment in the height direction.SOLUTION: This roller carriage is used as a heavy article conveying carriage for loading/unloading and installing a heavy article, or for conveying an article at construction site. The roller carriage includes a roller carriage body, a height adjusting mechanism part provided to the upper part of the roller carriage body, a rotating base which is installed on the height adjusting mechanism part and rotated on the horizontal plane, rollers installed on the lower surface of the roller carriage body, and a towing tool installed on the side surface of the roller carriage body. The height of the rotating base is adjusted by the height adjusting mechanism part.

Description

  The present invention relates to a heavy goods transporting carriage used for carrying in and out heavy equipment such as a liquid filling machine, etc., and for transporting articles on a construction site, and more particularly to a roller carriage.

  FIG. 1 is a schematic view showing an example of a roller cart used conventionally. FIG. 1A is a view from the side, and FIG. 1B is a view from the top. The roller carriage 1 has a roller carriage body 2, a rotary base 3, a roller 4, and a pulling jig 5. For transporting various heavy objects, the roller carriage 1 is inserted below the heavy objects, and the rotary base 3 It is moved together with the roller carriage in a state where a heavy object is placed on the top. The turntable 3 can rotate in the horizontal position in the direction indicated by the arrow 6 to change the direction of the loaded heavy object.

Registered Utility Model No. 3044083

  However, in the conventional roller cart, if adjustment in the height direction of the roller cart is necessary, there is a risk of using a jack device or the like that is different from the roller cart and being unstable and toppling during traveling. Appropriate inclusions had to be sandwiched above. In this case, extremely careful work is required to ensure the posture stability of heavy objects. Further, since it is necessary to use two or more jigs, the number of workers increases, and there is a problem that work efficiency such as work time and personnel is extremely poor. Furthermore, there are many cases in which adjustment in the height direction is required depending on the state of the ground during transportation and obstacles.

  Then, an object of this invention is to provide the roller trolley | bogie which can adjust height by simple operation | work without using another jig | tool for adjustment of a height direction.

The invention according to claim 1 of the present invention is
A roller cart used as a heavy-duty transport cart used for loading and unloading heavy items and for transporting articles on the construction site,
The roller cart body,
A height adjustment mechanism provided at the top of the roller carriage body;
A turntable provided on the height adjustment mechanism and rotating on a horizontal plane;
A roller provided on the lower surface of the roller carriage body;
A pulling jig provided on the side surface of the roller carriage body,
It is a roller carriage characterized by adjusting the height of the turntable.

The invention according to claim 2 of the present invention is
The height adjusting mechanism unit is
A link having a pantograph-type link mechanism provided on the fixed base;
A cylinder connected by hydraulic piping and a threaded cylinder having a larger inner diameter than the cylinder;
A height adjusting screw for moving the piston in the cylinder,
The roller carriage according to claim 1, wherein the height of the turntable is adjusted by rotating a height adjusting screw.

The invention according to claim 3 of the present invention is
The height adjusting mechanism unit is
Left and right screws supported by a fixed base;
A height adjustment screw in which the left and right screws are directly connected;
A left-hand thread nut connecting the left-hand thread and the two rotating bodies;
A right screw nut connecting the right screw and the two rotating bodies;
An elevator with an inclined surface that moves while contacting one of the two rotating bodies,
2. The roller carriage according to claim 1, wherein the height of the turntable provided on the lifting platform is adjusted by rotating a height adjusting screw.

The invention according to claim 4 of the present invention is
4. The roller cart according to claim 1, wherein four rollers are provided on the lower surface of the roller cart body.

  According to the roller cart according to the present invention, height adjustment can be easily performed, work time and work personnel can be suppressed, and work efficiency can be improved.

Schematic which shows an example of the roller cart conventionally used. The schematic diagram which shows the outline of the roller trolley | bogie which concerns on this invention. (A) is a figure which shows the height adjustment mechanism part A which concerns on this invention. (B) is a figure which shows the structure of the height adjustment mechanism part A. FIG. (A) is a figure which shows the height adjustment mechanism part B which concerns on this invention. (B) is a figure for demonstrating the method to adjust the height of the turntable B by the height adjustment mechanism part B. FIG. Schematic for demonstrating an example in the case of conveying a heavy article using the roller trolley | bogie which concerns on this invention. (A) is the figure seen from the side. (B) is a view from above.

  Hereinafter, an embodiment for carrying out a roller carriage according to the present invention will be described with reference to the drawings.

  FIG. 2 is a schematic diagram showing an outline of a roller cart according to the present invention. 2A is a view from the side, and FIG. 2B is a view from the top. The roller carriage 10 includes a roller carriage body 11, a height adjustment mechanism portion 12 provided on the upper portion of the roller carriage body, a turntable 13 provided on the height adjustment mechanism portion 12, and the roller carriage body 11. Four rollers 14 provided on the lower surface, and a traction jig 15 for traction on the side surface of the roller trolley main body 11 by a traction vehicle are provided.

  The rollers 14 are provided at the four corners of the lower surface of the roller carriage main body 11 through bearings so that the left / right turn operation can be easily performed when changing the conveyance direction.

  An example of the height adjustment mechanism is shown in FIG. The height adjustment mechanism A100 shown in FIG. 3A includes a link 16 having a pantograph type link mechanism provided in the fixed base A22a, a cylinder 17, a screw cylinder 18, and a height adjustment screw A19. The height of the turntable A23 which has the hydraulic pipe 20 and is provided on the lift table A22b and rotates on a horizontal plane can be adjusted.

FIG. 3B is a diagram showing in detail the cylinder 17, the screw cylinder 18, the height adjusting screw A19, and the hydraulic piping 20 that constitute the height adjusting mechanism A100. By rotating the height adjusting screw A19, the piston 18a in the threaded cylinder 18 is moved in the direction of the arrow 21, and by sending and feeding oil, the piston 17a in the cylinder 17 is moved in the direction of the arrow 24b. Extends and contracts. Cylinder diameter [Phi ₈ of the cylinder diameter [Phi ₇ and threaded cylinder 18 of the cylinder 17 In the relation Φ _7> Φ _8, the large cylinder 17 of diameter when applying a constant force to a small screw cylinder 18 of diameter Great power is applied.

  The piston bar 26 directly connected to the piston 17a in the cylinder 17 pushes and pulls the opening / closing fulcrum 16a on one side of the link 16 in the direction indicated by the arrow 24a. As a result, the link 16 having the pantograph type link mechanism opens and closes and rotates. The table A23 can be raised and lowered in the height direction. After the height adjustment, the piston 18a of the screw cylinder 18 is held by fixing the height adjustment screw A19.

  Thrust bearings and radial bearings can be used for placing and rotating heavy objects on the rotating part of the turntable A23, and the weight part placed on the turntable A23 can be rotated in a horizontal plane.

  What is necessary is just to employ | adopt a plurality of said height adjustment mechanism part A100 suitably.

  FIG. 4 shows a height adjustment mechanism B different from the height adjustment mechanism A100 having the pantograph type link mechanism. The height adjusting mechanism B200 shown in FIG. 4A includes an elevating base B31, a fixing base B32, a left screw 34a, a right screw 34b, a height adjusting screw B35, and four rotating bodies 36a. To 36d, a left screw nut portion 37, and a right screw nut portion 38, the height of the turntable B33 provided on the lift base B31 can be adjusted.

  FIG. 4B is a view for explaining a method of adjusting the height of the turntable B33 by the height adjusting mechanism B200. A left screw 34a and a right screw 34b are directly connected to the height adjusting screw B35 of the height adjusting mechanism B200, and by rotating the height adjusting screw B35, a left screw nut portion 37 and a right screw The screw nut portion 38 moves in the direction indicated by the arrows 40 and 41. At this time, the left screw 34a and the right screw 34b move in a direction toward or away from each other. FIG. 4B shows a case in which they move in the direction in which they approach each other and the lifting platform 31 is raised by H in the height direction.

  On the other hand, the surfaces of the lifting platform B31 in contact with the rotating bodies 36a and 36c are inclined surfaces 42a and 42b, and the height is adjusted by the left screw nut portion 37, the right screw nut portion 38, and the lifting platform 31 having an inclined surface. By rotating the screw B35, the height of the lifting platform B31 can be adjusted.

  As with the rotary table A23, a heavy load can be placed on the rotating part of the rotary table B33, and a thrust bearing or a radial bearing can be used to rotate the heavy table. It can be rotated with.

  What is necessary is just to employ | adopt multiple said height adjustment mechanism part B200 suitably.

FIG. 5 is a schematic diagram for explaining an example of using the roller cart 10 when carrying heavy objects in and out, installing them, and transporting articles on construction sites. 5A is a view from the side, and FIG. 5B is a view from the top. As shown in FIG. 5, the four roller carts 10 are submerged in the four corners of the heavy object 50, and the heavy object is placed on the roller carriage. In addition, when the ground surface in the middle of conveyance is not horizontal, the heights of the four turntables can be kept horizontal by adjusting the heights of the four roller carriages. Further, when there is an obstacle, the obstacle can be avoided by raising the turntable by the height adjusting mechanism 12.

  Thus, according to the roller cart of the present invention, there is no need to use a jack device or the like separate from the roller cart, and an appropriate inclusion on the cart to prevent the risk of being unstable and falling during traveling. It is possible to omit the work of pinching. Furthermore, even when the ground surface in the middle of conveyance is not horizontal or there are obstacles, the height adjustment mechanism unit according to the present invention can adjust the height with a simple operation, and the work efficiency can be increased. .

DESCRIPTION OF SYMBOLS 1 ... Roller-cart 2 ... Roller-cart body 3 ... Turntable 4 ... Roller 5 ... Traction jig 6 ... Arrow 10 which shows the rotation direction of a turntable ... Roller carriage 11 ... Roller carriage body 12 ... Height adjustment mechanism 13 ... Rotary table 14 ... Roller 15 ... Traction jig 16 ... Link 16a ... On one side of link 16 Opening and closing fulcrum 17 ··· cylinder 17a · · · piston 18 in cylinder 17 · · · screw type cylinder 18a · · · piston 19 in screw type cylinder 18 · · · screw A for height adjustment
20 ... Hydraulic piping 21 ... Arrow 22a indicating the moving direction of the piston 18a ... Fixing base A
22b ... Lifting platform A
23 ... Turntable A
24a ... Arrow 24b indicating the movement direction of the opening / closing fulcrum 16a ... Arrow 26 indicating the movement direction of the piston 17a ... Piston bar 31 directly connected to the piston 17a ... Lifting platform B
32 ... Fixing base B
33 ... turntable B
34a ... Left screw 34b ... Right screw 35 ... Height adjustment screw B
36a-36d ... Rotating body 37 ... Left screw nut portion 38 ... Right screw nut portion 40 ... Arrow 41 indicating the direction in which the left screw nut portion 37 moves 41 ... In the direction in which the right screw nut portion 38 moves Indicating arrow 50... Heavy object 100... Height adjustment mechanism A
200: Height adjustment mechanism B

Claims (4)

A roller cart used as a heavy-duty transport cart for loading and unloading heavy objects and for transporting articles on the construction site,
The roller cart body,
A height adjustment mechanism provided at the top of the roller carriage body;
A turntable provided on the height adjustment mechanism and rotating on a horizontal plane;
A roller provided on the lower surface of the roller carriage body;
A pulling jig provided on the side surface of the roller carriage body,
A roller carriage characterized in that the height of the turntable is adjusted by a height adjusting mechanism. The height adjusting mechanism unit is
A link having a pantograph-type link mechanism provided on the fixed base;
A cylinder connected by hydraulic piping and a threaded cylinder having a larger inner diameter than the cylinder;
A height adjusting screw for moving the piston in the cylinder,
The roller carriage according to claim 1, wherein the height of the turntable is adjusted by rotating a height adjusting screw. The height adjusting mechanism unit is
Left and right screws supported by a fixed base;
A height adjustment screw in which the left and right screws are directly connected;
A left-hand thread nut connecting the left-hand thread and the two rotating bodies;
A right screw nut connecting the right screw and the two rotating bodies;
An elevator with an inclined surface that moves while contacting one of the two rotating bodies,
The roller carriage according to claim 1, wherein the height of the turntable provided on the lifting platform is adjusted by rotating a height adjusting screw.   The roller cart according to claim 1, wherein four rollers are provided on a lower surface of the roller cart body.

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