JP2015157514A - truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a truck capable of reliably and firmly braking a wheel.SOLUTION: A truck 1 includes a wheel 3 that is provided in a truck body 2, and a braking device 20 for braking the wheel 3. The braking device 20 comprises a brake plate that is oscillatably provided, a cam member 54 that pushes the brake plate in the state of surface contact with the wheel 3, and a control lever 46 for operating the cam member 54. Since the brake plate is pushed in the state of surface contact with the wheel 3 to brake the wheel 3, the wheel 3 can be reliably and firmly braked without being damaged. Additionally, the truck 1 can also travel in a braked state.

Description

  The present invention relates to a carriage for transporting materials and the like at a work site such as a construction site.

  Conventionally, there is a cart equipped with wheels at the lower corners of the cart body as a cart for loading materials and equipment. (Patent Document 1)

Japanese Patent Laid-Open No. 2005-1565

  However, in the conventional cart, it is necessary to brake the wheels in order to use the cart stably even on a slope such as a slope.

  Then, an object of this invention is to provide the trolley | bogie which can brake a wheel reliably and firmly.

  The present invention according to claim 1 is a carriage including a wheel provided on a carriage body and a braking device that brakes the wheel, wherein the braking device is provided so as to be swingable, and the braking device. A pressing unit that presses the plate against the wheel in a surface contact state and an operation unit that operates the pressing unit are provided.

  According to a second aspect of the present invention, there is provided a connecting means for connecting the plurality of braking devices, and the plurality of braking devices are provided so as to be interlocked with each other.

  According to a third aspect of the present invention, there is provided a regulating means for regulating the operating means.

  According to the first aspect of the present invention, since the brake plate is pressed against the wheel in a surface contact state to brake the wheel, the wheel can be reliably and firmly braked without damaging the wheel. It is also possible to run the carriage with the brake applied.

  According to the second aspect of the present invention, by operating one brake device by interlocking a plurality of brake devices, the other brake devices are interlocked and released or released, so that the braking of the carriage is stabilized. Can be made.

  According to the invention of claim 3, by providing the operating means so as to be regulated, it is possible to prevent the operating means from being inadvertently operated and braking the carriage.

It is a perspective view of the trolley | bogie which shows one Embodiment of the trolley | bogie of this invention. It is the perspective view which looked at the trolley | bogie from the left side surface same as the above. It is a top view of a trolley | bogie in the state which restricted the operation lever same as the above. It is a side view of a trolley | bogie in the state which restricted the operation lever same as the above. It is a top view of a trolley | bogie in the state which operated the operation lever same as the above and braked the wheel. It is a side view of a trolley | bogie in the state which operated the operation lever same as the above and braked the wheel. FIG. 6 is a cross-sectional view of the rear wheel in a state where the operation lever is restricted. FIG. 6 is a cross-sectional view of the rear wheel in a state where the operation lever is operated to brake the wheel. FIG. 4 is a perspective view of the vicinity of a rear wheel in a state where the operation lever is restricted. FIG. 6 is a perspective view of the vicinity of a rear wheel in a state where the restricting means is released. FIG. 6 is a perspective view of the vicinity of the rear wheel in a state where the operation lever is operated to brake the wheel. It is a side view which shows the state which accumulated the trolley | bogie same as the above. FIG. 13 (a) is a plan view showing a state in which both operation levers are aligned, and FIG. 13 (b) is operated simultaneously with the connecting shaft by operating one operation lever from the state of FIG. 13 (a). FIG. 13C is a plan view in which one of the operating levers is further operated from the state of FIG. 13B to rotate simultaneously with the connecting shaft and the other operating lever. is there.

  Hereinafter, an example of an embodiment of a cart according to the present invention will be described with reference to FIGS. The cart 1 in this embodiment includes a cart body 2 and wheels 3 provided at the lower part of the cart body 2.

  The cart body 2 includes a frame body 4 assembled in a rectangular shape, and a placement portion 5 disposed on the upper portion of the frame body 4.

  The frame body 4 includes a front frame 6 and a rear frame 7 arranged in the front-rear direction (X direction in the drawing) of the carriage main body 2, and the carriage main body 2 between the front frame 6 and the rear frame 7. A right frame 8 and a left frame 9 are provided in parallel with the front-rear direction.

  Here, both ends of the front side frame 6 and the front side of the right side frame 8 or the front side of the left side frame 9 are connected via a front side mounting member 10.

  The front mounting member 10 includes a front vertical piece member 11 made of a plate-like member substantially parallel to the vertical direction of the carriage main body 2, and a plate-like member substantially parallel to the horizontal direction of the carriage main body 2 below the front vertical piece member 11. The front side piece member 12 is made of a plate-like member formed in a substantially L shape in front view, which is integrally provided by welding or the like.

  The front side vertical piece member 11 is formed with a front side locking hole 13 formed of a through hole in which a locking hook or the like for suspending and holding the carriage 1 can be locked. A front wheel 14 of the wheel 3 made of a well-known universal caster is detachably fixed to the lower portion of the front lateral piece member 12 by a bolt 14A.

  Further, both sides of the rear side frame 7 and the rear side of the right side frame 8 or the rear side of the left side frame 9 are connected via a rear side attachment member 15, respectively.

  The rear attachment member 15 includes a rear vertical piece member 16 made of a plate member substantially parallel to the vertical direction of the carriage main body 2, and a lower portion of the rear vertical piece member 16 substantially parallel to the horizontal direction of the carriage main body 2. It consists of a plate-like member formed in a substantially L shape in front view, which is integrally provided with a rear side piece 17 made of a plate-like member by welding or the like.

  The rear side vertical piece member 16 is formed with a rear side locking hole 18 formed of a through hole in which a locking hook or the like for suspending and holding the carriage 1 can be locked. A rear wheel 19 of the wheel 3 is fixed to the lower portion of the rear side piece member 17. The rear wheel 19 is integrally provided with a braking device 20.

  A plurality of locking pin members 21 are provided before and after the lower portions of the right frame 8 and the left frame 9 so as to be paired with each other. The locking pin member 21 locks the periphery of a cloth-like member (not shown), a net member, a rope member, and the like for covering the mounting portion 5 and fixing the load on the mounting portion 5. Is.

  Further, strut attachment portions 22 are provided at both ends of the front frame 6 and both ends of the rear frame 7. The column attachment part 22 is made of a rectangular tube-like member into which a column member 25 described later can be inserted, and the bottom of the column attachment part 22 is closed by a bottom plate member 23 made of a plate-like member smaller than the opening area of the column attachment part 22. Yes.

  As a result, a predetermined gap 24 is formed between the inner peripheral wall of the support column mounting portion 22 and the bottom plate member 23 at the bottom of the support column mounting portion 22. With this gap 24, when the bogie main body 2 is painted by dipping in paint such as galvanizing, the paint is discharged outside without accumulating in the column attachment part 22, and in the column attachment part 22. It is possible to prevent accumulation of dust and dust.

  And the support | pillar member 25 for pushing and pulling and operating the trolley | bogie 1 through this support | pillar attachment part 22 is attached to the four corners of the frame 4. FIG. Here, the column member 25 is made of a rod-shaped member such as a cylindrical member, and a rod-shaped material such as a construction site may be used.

  In the present embodiment, the column support portion 22 is a column member 25 that is detachably provided and the carriage 1 can be operated by the column member 25. The mechanism for making the column member 25 detachable may be other than the configuration in which the column member 25 is inserted and attached from above.

  In addition, the shape of the support | pillar member 25 is not limited to a linear form, It is good also as an L type. In this case, it is possible to make the support member 25 L-shaped and prevent the support member 25 from projecting from the upper surface of the mounting portion 5, so that the support member 25 does not interfere with the cargo of the carriage 1. .

  On the front side, the middle side, and the rear side between the right frame 8 and the left frame 9, a plurality of recumbent members 26 are installed separately from each other. 8 and the left frame 9 are provided in parallel and integrally with a mounting plate 27.

  The placement portion 5 is fixed on a placement portion frame 28 formed by the recumbent member 26 and the placement plate 27. The mounting portion 5 is made of a plate-like member such as a panel. The mounting portion 5 is fixed to the recumbent member 26 and the mounting plate 27 by bolts 29 as fixing means. The head of the bolt 29 is provided so as not to protrude from the upper surface of the mounting portion 5.

  The rear wheel 19 includes a bracket 30 that attaches the rear wheel 19 to the rear attachment member 15, a wheel body 31 that is rotatably provided to the bracket 30, and a braking device 20 that is attached to the bracket 30 and brakes the wheel body 31. It has.

  The bracket 30 includes an upper surface portion 32 and both side surface portions 33 formed by bending the left and right ends of the upper surface portion 32 downward, and is formed of a plate-like member that is bent and formed in a substantially gate shape.

  The upper surface portion 32 of the bracket 30 and the rear mounting member 15 are detachably provided via fixing means 34 such as bolts and nuts.

  A tire bearing portion 35 is provided at the center side lower portion of the both side surface portions 33 of the bracket 30. A tire 37 is rotatably supported on the tire bearing portion 35 via an axle 36.

  In addition, a brake plate bearing portion 38 is provided on the rear upper portion of the tire bearing portion 35 on both side surface portions 33 of the bracket 30. A brake plate 40 is supported on the brake plate bearing portion 38 via a brake plate shaft member 39 so as to be swingable in the front-rear direction of the carriage 1. The brake plate 40 is made of a metal plate-like member having a cylindrical shaft insertion portion 41 into which the brake plate shaft member 39 can be inserted. Further, the brake plate 40 is provided with urging means 42 made of a coil spring.

  One of the urging means 42 is wound around and fixed to the brake plate shaft member 39, and the other of the urging means 42 is locked and fixed to a through portion 43 formed in the brake plate 40. . As a result, a biasing force in a direction away from the tire 37 is applied to the brake plate 40 by the biasing means 42.

  Further, an operation bearing portion 44 is provided at a lower rear portion of the brake plate bearing portion 38 of the both side surface portions 33 of the bracket 30.

  An operation lever 46 is rotatably supported on the operation bearing portion 44 via an operation lever shaft member 45. One side of the operating lever shaft member 45 is fixed to the operating bearing portion 44 of the side surface portion 33 outside the bracket 30 by fixing means (not shown) such as a split pin. In addition, a connecting hole 49 for connecting a connecting shaft 48 for connecting to the other operating lever shaft member 45 is provided on the other side of the operating lever shaft member 45.

  Further, in the center of the operating lever shaft member 45, an insertion hole (not shown) is inserted through which the base end portion of the operating lever base end member 50 made of a rod-like member is orthogonal to the operating lever shaft member 45. ). The distal end portion of the operation lever base end member 50 is provided so that the base end portion of the operation lever main body 52 made of a cylindrical member can be inserted.

  An operation lever extension member 53 made of a rod-like member is provided on the front end side of the operation lever main body 52 so that it can be inserted. A pair of cam members 54 are provided on both sides of the insertion hole in the operation lever shaft member 45.

  The cam member 54 is made of a disk-shaped member, and an insertion hole 55 into which the operation lever shaft member 45 can be inserted is formed at a position eccentric from the central axis. The cam member 54 attached to the operation lever shaft member 45 through the insertion hole 55 is fixed to the operation lever shaft member 45 by welding or the like.

  Since the insertion hole 55 is formed eccentrically from the central axis of the cam member 54, the cam member 54 has the cam member 54 farthest from the center of the insertion hole 55. A large-diameter portion 56 that is the periphery, and a small-diameter portion 57 that is the periphery of the cam member 54 closest to the center of the insertion hole 55 are formed on the other side.

  The large-diameter portion 56 is positioned in an angle direction of approximately 45 degrees rearward with respect to the central axis of the operation lever main body 52 with the operation lever main body 52 standing vertically, while the operation lever main body 52 is substantially rearwardly inclined 45. When it is tilted each time, it is provided so as to be rotatable until it is located at the lowermost part of the cam member 54.

  One of the connecting shafts 48 is provided with a plurality of first fixing through portions 58 arranged in parallel in the axial direction of the connecting shaft 48. Further, the other of the connecting shafts 48 is provided with a second fixing through portion 59 having a long hole shape parallel to the axial direction of the connecting shaft 48.

  Then, the first fixing through portion 58 of the connection shaft 48 and the connection hole 49 of the operation lever shaft member 45 of one rear wheel 3 are fixed with bolts 60 and nuts 61, and the connection shaft 48 The second fixing penetrating portion 59 and the connecting hole 49 of the operating lever shaft member 45 of the other rear wheel 3 are fixed by bolts 62 and nuts 63.

  In this way, the braking device 20 of the one rear wheel 3 and the braking device 20 of the other rear wheel 3 are connected to each other via the connecting shaft 48.

  Further, a groove portion 64 through which the operation lever main body 52 can pass is formed in the rear end of the upper surface portion 32 of the bracket 30 in parallel with the front-rear direction of the carriage 1.

  Further, a restricting means 65 for restricting the operation of the operation lever main body 52 is provided at the rear portion of the upper surface portion 32 of the bracket 30.

  Here, the restricting means 65 includes a bearing portion 66 and a guide member 67 on the upper surface portion 32 of the bracket 30 so as to sandwich the groove portion 64, and the bearing portion 66 is a stopper made of a plate-like member via a rotating shaft 68. A member 69 is rotatably provided.

  The stopper member 69 is provided so as to be able to hang over the groove portion 64 between the bearing portion 66 and the guide member 67. When the operation lever main body 52 is positioned substantially vertically and the stopper member 69 is hung between the bearing portion 66 and the guide member 67, the operation lever main body 52 is restricted so as not to rotate. In addition, the stopper member 69 has a shape that does not protrude outward from the width of the carriage body 2 (Y direction in the drawing) in a state where the restriction is released 180 degrees from the restriction position.

  The effect of the cart 1 having the above configuration will be described. A method for assembling the carriage 1 of this embodiment will be described. First, the front wheel 14 is fixed to the front side piece member 12 with bolts 14 </ b> A, and the rear wheel 19 is fixed to the rear side piece member 17 with bolts 34. Subsequently, the first fixing through portion 58 of the connecting shaft 48 and the connecting hole of the operation lever shaft member 45 of the one rear wheel 19 are fixed by the bolt 60 and the nut 61, and the first of the connecting shaft 48 is fixed. 2 and the connecting hole of the operation lever shaft member 45 of the other rear wheel 19 are fixed by a bolt 62 and a nut 63, and the braking of one rear wheel 3 is performed via the connecting shaft 48. The device 20 and the braking device 20 of the other rear wheel 3 are connected so as to be interlocked.

  As described above, each of the pair of rear wheels 19 includes the braking device 20, and the operation lever 46 of one braking device 20 and the operation lever 46 of the other braking device 20 can be linked to each other. By actuating one brake device 20, both rear wheels 19 can be braked or released simultaneously.

  Further, as shown in FIG. 13A, slight play R is provided between the shafts of the bolts 60 and 62 and the first fixing through portion 58 and the second fixing through portion 59, respectively. ing. By this slight play R, the operation lever 46 of the brake device 20 on the operated side is rotated in the operation levers 46 of both brake devices 20 that are initially set substantially vertically and in the same posture. When the shaft of the bolt 62 that connects the side operation lever shaft member 45 and the connection shaft 48 abuts against the inner wall on the rotation direction side of the second fixing through portion 59, the operation on the operated side The connecting shaft 48 rotates together with the lever 46 (see FIG. 13B). When the operation lever 46 is further rotated from the state shown in FIG. 13B as shown in FIG. 13C, the rotation direction of the first fixing through portion 58 of the connecting shaft 48 is opposite to the rotation direction. When the shaft of the bolt 60 of the other braking device 20 comes into contact with the inner wall and the operation lever 46 on the operated side produces a relative rotation angle difference D with respect to the other operation lever 46, the other The operation lever 46 of the braking device 20 starts rotating in synchronization with the operation lever 46 on the operated side.

  For this reason, a slight time difference occurs in the braking effectiveness of each rear wheel 19 between the operation of the brake device 20 on the operated side and the operation of the other brake device 20, so that the time difference of this braking operation is utilized. The direction of the carriage 1 can be changed while braking the rear wheel 19.

  The braking of the rear wheel 19 by the braking device 20 of the present embodiment will be described. First, the operation lever main body 52 is rotated from a state of being substantially vertical as shown in FIG. 7 so as to tilt backward as shown in FIG. 8, and the cam member 54 is moved by operating the operation lever 46. Rotate. Then, when the cam member 54 rotates and is pressed against the brake plate 40 from the small diameter portion 57 to the large diameter portion 56 on the outer periphery of the cam member 54, the brake plate 40 swings forward of the carriage 1, The brake plate 40 is pressed against the tire 37. When the brake plate 40 is pressed against the tire 37 by the cam member 54 rotating in this manner, the rear wheel 19 is braked by friction caused by surface contact between the brake plate 40 and the tire 37.

  The cam member 54 in the state of FIG. 8 is not rotatable due to friction with the brake plate 40 without the release operation for raising the operation lever 46 substantially vertically, and without the release operation of the operation lever 46. The wheel 3 is not released from braking.

  In order to restrict the rotation of the operation lever 46 by the restricting means 65, when the stopper member 69 of the restricting means 65 is hung on the groove portion 64 with the operation lever main body 52 standing substantially vertically, the operation lever main body 52 can be restricted to be unrotatable.

  In order to release the restriction of the operation lever 46 by the restriction means 65 and make the operation lever 46 rotatable, the stopper member 69 of the restriction means 65 is rotated until it is released from the groove 64 as shown in FIG. When moved, the operation lever 46 is in a rotatable state.

  Here, when the stopper member 69 is rotated and rotated 180 degrees from the restriction position, the stopper member 69 has a shape that does not protrude outward from the width of the carriage body 2, so that the stopper member 69 contacts the outside. Can be prevented.

  The operation lever 46 can be divided into an operation lever main body 52 and an operation lever extension member 53 that can be detached from the operation lever main body 52, and the operation lever main body 52 does not protrude from the upper surface of the mounting portion 5 of the carriage main body 2. The operation lever main body 52 from which the operation lever extension member 53 is removed has a structure that does not interfere with the load on the placement portion 5.

  Further, the urging means 42 is provided in the brake plate 40, and the urging force is always applied to the brake plate 40 in the direction away from the tire 37, so that the brake plate 40 can be moved by a slope such as a slope other than the braking operation by the operation lever 46. Contact with the tire 37 can be prevented.

  In order to move the carriage 1, the pillar member 25 is attached to the pillar attachment portion 22, the pillar member 25 is grasped, and the carriage 1 is moved in an arbitrary direction. In addition, it is possible to prevent the load on the placement unit 5 from collapsing by raising the support members 25 at the four corners of the cart body 2.

  The mounting unit 5 uses a wooden plywood that is softer than a metal plate to protect the luggage. However, the mounting unit 5 is made of a plate material such as a plywood so that it can be changed at the work site. Procurement of the mounting portion 5 can be facilitated.

  In addition, the front side piece member 12 and the rear side piece member 17 are respectively provided one step lower than the carriage body 2 and the placement part 5, and the front wheel 14 is provided between the front frame 6 and the placement part 5 of the carriage body 2. And a storage space for the rear wheel 19 is provided between the rear frame 7 and the mounting portion 5. As described above, by providing the accommodation space for the front wheel 14 and the rear wheel 19 in the carriage 1, the carriage 1 can be stably stacked in multiple upper and lower stages as shown in FIG.

  Further, when the cam member 54 is formed in a disk shape and has an arcuate curved surface from the small diameter portion 57 to the large diameter portion 56, the brake plate 40 is pressed from the small diameter portion 57 to the large diameter portion 56 of the cam member 54. The braking force by the brake plate 40 is gradually increased so that the carriage 1 can be made to travel while being gently braked, and the traveling control of the carriage 1 on an inclined slope or the like is facilitated. be able to.

  As described above, the present embodiment is a cart 1 that includes the wheel 3 provided on the cart body 2 and the braking device 20 that brakes the wheel 3, and the braking device 20 is provided so as to be swingable. A brake plate 40 as a brake plate, a cam member 54 as a pressing means for pressing the brake plate 40 against the wheel 3 in a surface contact state, and an operation lever 46 as an operation means for operating the cam member 54 are provided. ing.

  In this case, since the brake plate 40 is pressed against the wheel 3 in a surface contact state to brake the wheel 3, the wheel 3 can be reliably and firmly braked without damaging the wheel 3. It is also possible to adjust the braking force of the braking device 20 by operating the operation lever 46 so that the carriage 1 can travel with the brake applied.

  Further, the connecting shaft 48 is provided as a connecting means for connecting the plurality of braking devices 20, and the operating lever shaft members 45 of the plurality of braking devices 20 are connected to each other so as to be interlocked with each other. Since the other braking devices 20 are braked or released in conjunction with each other, the braking of the carriage 1 can be stabilized.

  Further, by providing the restricting means 65 for restricting the operation lever 46 so that the operation lever 46 can be restricted, it is possible to prevent the operation lever 46 from being inadvertently operated and braking the carriage 1. .

  In addition, this invention is not limited to a present Example, A various deformation | transformation is possible. For example, in this embodiment, the operation lever and the support member may be provided so as to be aligned with respect to the front-rear direction of the carriage, and in this way, the operation lever extension member also does not interfere with the load on the mounting portion. can do.

1 bogie 2 bogie body 3 wheels 20 braking device 40 brake plate (braking plate)
46 Operation lever (operation means)
48 Connecting shaft (connecting means)
54 Cam member (pressing means)
65 Regulatory measures

Claims (3)

A carriage provided with a wheel provided in the carriage body and a braking device for braking the wheel,
The brake device includes a brake plate provided to be swingable, a pressing means for pressing the brake plate against the wheel in a surface contact state, and an operation means for operating the pressing means. . The cart according to claim 1, further comprising a coupling unit that couples the plurality of braking devices, wherein the plurality of braking devices are interlocked. The cart according to claim 1, further comprising a regulation unit that regulates the operation unit.

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