JP4883587B2 - Attachment for fixing the car cart - Google Patents

Description

  The present invention relates to a car cart fixing attachment for fixing a car cart to a forklift.

  The car cart is used to load and carry various products at a distribution center or the like. The car trolley includes a car part for storing products and wheels for traveling. A car cart is lightweight and is generally transported by human power. However, when a large number of commodities are transported to a distant place by a car cart, the weight of the load becomes large, so that it is very difficult to transport by hand.

  Therefore, when a large number of products are transported to a remote place, they are transported by a forklift instead of being transported by a car cart. A forklift can carry a pallet by lifting it with a fork, and therefore carries a large number of products on the pallet (see, for example, Patent Document 1).

  However, forklifts do not work well, so when distributing goods to each shelf, the goods are moved from the pallet to the car cart and the goods are distributed by the car cart. In this way, when distributing products to the shelves, they are transported by a car cart, so if the car cart loaded with products can be transported by a forklift, there will be no need to move the products from the pallet to the car cart, I don't need it.

However, when a car cart is transported by a forklift, if the car cart is simply lifted and transported by a fork, it is very unstable, and there is a problem that the car cart swings and falls or slides down from the fork.
JP 2003-252598 A

  Therefore, in view of the above-mentioned problems and the like, the problem to be solved by the present invention is to provide a car cart fixing attachment that can carry a car cart in a stable state when transporting the car cart with a forklift. That is.

In order to solve the above problems, an attachment for fixing a car cart according to the present invention is as follows.
An attachment for fixing the car trolley for locking the car trolley to the forklift,
A frame that fits snugly inside the wheel of the trolley and allows the fork of the forklift to pass through;
A rotating arm provided on the frame and rotatable by a rotating shaft;
A locking portion provided on the rotating arm,
The rotating arm swings between a first position where the locking portion does not protrude from the upper surface of the frame body and a second position where the locking portion protrudes.
Place the frame inside the wheel of the car cart, insert the fork into the frame, lift the car cart, and change the rotating arm from the first state to the second state.
The movement of the car cart in the left-right direction is restricted by the frame, and the movement of the car cart in the front-rear direction is restricted by the locking portion of the rotating arm.

  Preferably, the rotating arm includes a pressing portion, and the pressing portion is pressed with a lock bar of the forklift so that the rotating arm is in the second state.

  Preferably, the frame has a cutout portion facing the lock bar, and the upper portion of the lock bar can protrude from the upper surface of the frame body through the cutout portion.

  Preferably, the pressing portion is formed so as to restrict the movement of the frame body in the front-rear direction when pressed by the lock bar.

  The car cart fixing attachment according to the present invention restricts the movement of the car cart in the left-right direction with the frame, and regulates the movement of the car cart in the front-rear direction with the locking portion of the rotating arm. Accordingly, even when the car cart is transported by the forklift, the car cart can be transported in a stable state without shaking or sliding off the fork.

  Hereinafter, an attachment for securing a car truck according to the present invention will be described with reference to the accompanying drawings.

[Configuration of forklift]
FIG. 1 is a perspective view of the forklift viewed from the rear. FIG. 2 is a perspective view seen from the front of the forklift.

  The forklift 1 includes a driver's cab 3 on which an operator boardes. The forklift 1 is fixed to the lower part of the cab 3 so that a pair of forks 2 protrudes rearward. The forklift 1 has a front-rear direction 1a and a left-right direction 1b. The forklift 1 includes a mast device 10 at the center in the front-rear direction 1a.

  The forklift 1 supports the driver's cab 3 (fork 2) along the mast device 10 so as to be movable up and down. The forklift 1 includes a drive unit 11 including a motor for driving and a hydraulic motor for driving a cargo handling device. The forklift 1 includes a head guard 12 and a safety bar 14 for protecting the operator above the cab 3.

  The forklift 1 includes a cab 3 including a handle 13, an accelerator, and an operation unit 18 that moves the cab 3 and the fork 2 up and down. The forklift 1 includes a brake pedal 16 on the floor surface of the cab 3.

[Configuration of locking device]
FIG. 3 is a plan view of the inside of the cab showing the configuration of the locking device. FIG. 4 is a side view of the inside of the cab showing the configuration of the locking device. FIG. 5 is a configuration diagram of a main part of the locking device.

  The forklift 1 includes a flat pedestal 4 below the cab 3. The forklift 1 includes a lock device 20 inside the base 4. As will be described later, the locking device 20 fixes the car cart fixing attachment 6 and operates the rotating arm 61 of the car cart fixing attachment 6. In addition, the locking device 20 can fix a pallet (refer patent document 1).

  The lock device 20 includes a lock bar 21 that protrudes in parallel with the fork 2 from the rear plate 4 a of the base 4. The lock bar 21 is formed in an L shape facing each other in plan view, and the base is bolted to a plate-like bracket 23, and the entire shape is formed in a U shape by the two lock bars 21. (FIG. 3).

  The lock bar 21 has an inclined portion 22 in which the upper portion of the distal end portion is inclined downward toward the distal end (FIG. 4). The bracket 23 is rotatably supported on the base 4 via a horizontal shaft 26. As a result, the lock bar 21 swings up and down around the shaft 26.

  The locking device 20 includes a power cylinder 30 in the front-rear direction 1a. The power cylinder 30 expands and contracts the rod 32 through a gear (not shown) by forward and reverse rotation of a motor 31 provided at the end (FIG. 5).

  The power cylinder 30 includes an input detection sensor 28 that detects a state in which the rod 32 is housed, and an output detection sensor 29 that detects a state in which the rod 32 is extended. Note that the incoming detection sensor 28 and the outgoing detection sensor 29 are, for example, magnetic sensors.

  The locking device 20 includes a link 34. The upper end of the link 34 is pivotally supported via a shaft 36 at the tip of the rod 32 (FIG. 5), and the lower end is pivotally supported by a shaft 35 supported by the pedestal 4. The locking device 20 includes a damper 40.

  One end of the damper 40 is pivotally supported via a central shaft 37 of the link 34, and the other end is pivotally supported via a protrusion 27 and a shaft 41 projecting from the bracket 23. The damper 40 absorbs the force applied to the lock bar 21 when the attachment 6 is fixed as will be described later, and includes a spring (not shown) inside.

  In a state where the rod 32 of the power cylinder 30 is housed (FIG. 4), the link 34 is located on the left side of the figure around the shaft 35, and the damper 40 is urged to the left. As a result, the bracket 23 and the lock bar 21 swing counterclockwise about the shaft 26, and the lock bar 21 maintains a horizontal state where it is in the same vertical position as the fork 2 in a side view (see FIG. 5). Dash-dot line position).

  In this state, when power is applied to the motor 31 and the rod 32 of the power cylinder 30 extends, the link 34 is urged to the right in the drawing about the shaft 35 as shown in FIG. Is urged to the right, and the bracket 23 swings clockwise about the shaft 26. That is, the lock bar 21 rotates clockwise about the shaft 26 (solid line position in FIG. 5).

  That is, the rod 32 of the power cylinder 30 is expanded and contracted by the forward rotation and the reverse rotation of the motor 31, the link 34 rotates left and right around the shaft 35, and the damper 40 is also interlocked to the left and right to lock. The bar 21 rotates clockwise and counterclockwise about the shaft 26 via the bracket 23.

  The motor 31 is controlled by the control means 42 (FIG. 5). And the control means 42 controls the drive of the forward / reverse rotation of the motor 31 based on the detection signal from the rotation detection sensor 43 mentioned later.

[Structure of the attachment for fixing the car cart]
FIG. 6 is a perspective view showing an attachment for fixing a car cart. FIG. 6B is a perspective view showing the upper surface 60b of the car cart fixing attachment in a cutaway manner. FIG. 7 is a diagram for explaining a correspondence relationship between the forklift, the car cart fixing attachment, and the car cart. FIG. 7A is a view seen from above, and FIG. 7B is a view seen from the side.

  As shown in FIG. 6, the car cart fixing attachment 6 has a front-rear direction 6a and a left-right direction 6b. The front-rear direction 6 a corresponds to the front-rear direction 1 a (FIG. 1) of the forklift 1. The left-right direction 6b corresponds to the left-right direction 1b (FIG. 1) of the forklift 1.

  The car cart fixing attachment 6 includes a frame body 60. The frame body 60 is a rectangular cylindrical frame body that penetrates in the front-rear direction 6a. The car cart fixing attachment 6 includes a rotating arm 61. The car cart fixing attachment 6 includes a rotating shaft 62 extending in the left-right direction 6b.

  The rotating arm 61 is pivotally supported in the frame body 60 via a rotating shaft 62. The rotating arm 61 rotates around the rotating shaft 62. The rotating arm 61 has a locking part 610 at the rear part in the front-rear direction 6a. The locking portion 610 extends upward.

  The frame 60 has a notch 60a in the front center portion of the upper surface 60b. As will be described later, the lock bar 21 of the forklift 1 presses the pressing portion 611 at the front portion of the rotating arm 61 through the notch portion 60 a and rotates the rotating arm 61 around the rotating shaft 62.

  As shown in FIG. 7, the car cart 7 includes four wheels 70 for traveling. The car cart 7 includes a car part 72 for placing products. The car cart 7 includes a bottom plate 71 for supporting the wheel 70 and the car part 72.

The left and right dimension (width) W6 of the car cart fixing attachment 6 is substantially the same as the inner dimension W70 of the wheel 70 of the car cart 7. Accordingly, the car cart 7 can be provided with the car cart fixing attachment 6 in a state in which the car cart 7 is fitted into the inner side W <b> 7 of the wheel 70.
The state of being fitted snugly only needs to be able to restrict the movement of the car cart 7 in the left-right direction 1b during transportation, as described later, and allows slight movement in the left-right direction.
Also, the car cart fixing attachment 6 has a length L6 that is substantially the same as the length L7 of the bottom plate 71 of the car cart 7.

  The car cart fixing attachment 6 can insert a pair of forks 2 in the front-rear direction 6a. Further, as described above, in the car truck fixing attachment 6, the lock bar 21 passes through the notch portion 60a through the inside and outside of the car truck fixing attachment 6. Thereby, the lock bar 21 presses the pressing portion 611 of the rotary arm 61 to rotate the rotary arm 61.

[Operation of car trolley fixing attachment]
FIG. 8 is a side view for explaining the operation of the car cart fixing attachment. FIG. 8 shows a cross section of the car cart fixing attachment 6 and the pedestal 4 for easy explanation.

  As shown in FIG. 8A, the car cart fixing attachment 6 is placed on the floor surface F. At this time, the rotating arm 61 is in a position where the locking portion 610 does not protrude from the upper surface 60 b of the frame body 60 (hereinafter referred to as “first position”). The rotating arm 61 is urged by an elastic member (not shown) such as a spring provided on the rotating shaft 62 so as to be in the first position at the normal time. Then, the car cart 7 is arranged at the same position as the car cart fixing attachment 6. Since the car cart 7 has the car cart fixing attachment 6 disposed on the inner side W <b> 7 of the wheel 70, the wheels 70 of the car cart 7 are arranged on both outer sides of the car cart fixing attachment 6, and the car cart fixing attachment is attached. 6 protrudes downward from the lower surface 60b of 6.

  Thereafter, the forklift 1 is moved rearward, and the fork 2 is inserted into the car cart fixing attachment 6 as shown in FIG. 8B. Then, when the rear plate 4a of the base 4 of the forklift 1 hits the car cart 7 and the car cart fixing attachment 6, the forklift 1 is stopped. At that time, the upper portion of the lock bar 21 protrudes from the upper surface 60b of the car cart fixing attachment 6 through the notch 60a. At this time, the lock bar 21 is in a horizontal state.

  Thereafter, the fork 2 is lifted together with the pedestal 4 to lift the car cart fixing attachment 6 away from the floor surface F as shown in FIG. 8C. Further, the car cart fixing attachment 6 is applied to the bottom plate 71 of the car cart 7. Thereby, the upper part of the lock bar 21 protruding from the car cart fixing attachment 6 hits the bottom plate 71. Then, the lock bar 21 rotates around the shaft 26 in the clockwise direction.

  The forklift 1 includes a rotation detection sensor 43 for detecting the rotation of the lock bar 21. When the rotation detection sensor 43 detects that the lock bar 21 has rotated from the horizontal state in the clockwise direction, the control means 42 further rotates the lock bar 21 in the clockwise direction around the shaft 26.

  Thereby, as shown in FIG. 8D, the lock bar 21 presses the pressing portion 611 of the rotating arm 6. Due to this pressing, the rotating arm 6 rotates around the rotation shaft 62, and from the first position, the locking portion 610 protrudes from the upper surface 60 b of the frame body 60 (hereinafter referred to as “second position”). To do. When the lock bar 21 presses the lower surface of the car cart fixing attachment 6 with a predetermined pressing force, the car cart fixing attachment 6 is fixed by pressing the fork 2 and the lock bar 21 from the inside.

  By setting the rotary arm 6 to the second position, the locking portion 610 of the rotary arm 6 regulates the backward movement of the car cart 7 in the front-rear direction 1a. Then, the rear plate 4 a of the pedestal 4 restricts the forward movement of the car cart 7. Moreover, since the wheel 70 of the car trolley 7 protrudes downward from the lower surface 60b of the frame body 60, the left-right movement of the car trolley 7 is restricted in the left-right direction 1b.

  The pressing portion 611 of the rotating arm 6 has an inclined portion 61a that is inclined upward (FIG. 6B), and when the lock bar 21 presses the pressing portion 611, as shown in FIG. When the portion is locked to the inclined portion 61 a of the pressing portion 611, the rearward movement of the car cart fixing attachment 6 can be restricted.

  In this state, the fork 2 is further lifted together with the pedestal 4, the car cart 7 is lifted from the floor surface F together with the car cart fixing attachment 6, and the forklift 1 is driven. As described above, since the car cart 7 is restricted from moving in the front-rear direction 1 a and the left-right direction 1 b by the car cart fixing attachment 6, the car cart 7 is not shaken or slipped off the fork 2 during transportation.

Note that the fixing operation by the car cart fixing attachment 6 is not limited to the above order.
That is, first, the fork 2 is inserted into the car cart fixing attachment 6, and the car cart fixing attachment 6 is applied to the rear plate 4 a of the base 4. Then, the car cart 7 is arranged at the position of the car cart fixing attachment 6.

  Thereafter, the fork 2 is raised, the car cart fixing attachment 6 is lifted, and the lock bar 21 is applied to the car cart 7. As a result, the lock bar 21 is driven to move the rotary arm 61 from the first position to the second position. Further, the fork 2 may be raised to lift the car cart 7 together with the car cart fixing attachment 6.

  In the above description, the locking portion 610 of the rotating arm 61 regulates the rear portion of the bottom plate 71 of the car carriage 7. For example, the locking portion 610 is inserted into a hole provided at a predetermined position of the bottom plate 71 before and after. The movement in the direction 1a may be restricted. In the above description, the rotary arm 61 is rotated using the lock bar 21 for fixing the pallet, but may be rotated by another device.

  In the above description, the order picking truck is used, but it can be applied to various forklifts such as a reach type and a counter balance type. Since the counterbalance type forklift is provided with a fork at the front part, the rearward movement of the car cart 7 is restricted by the forklift 1, and the forward movement of the car cart 7 is restricted by the locking portion 610 of the rotating arm 61.

The perspective view seen from the back of a forklift. The perspective view seen from the front of a forklift. The top view of the cab which shows the structure of a locking device. The side view of the cab showing the structure of a locking device. The principal part block diagram of a locking device. The perspective view which shows the attachment for basket trolley | bogie fixing. The figure for demonstrating the correspondence of a forklift, a car trolley fixing attachment, and a car trolley. The side view for demonstrating operation | movement of the attachment for basket trolley | bogie fixing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Forklift 6 Attachment for basket carriage 60 Frame 61 Rotating arm 610 Locking part 611 Pressing part 61a Inclining part 60a of pressing part Frame notch part 60b Upper surface 62 of frame body Rotating shaft 7 Car truck 70 Wheel of car truck W70 Car cart wheel inside 2 Fork 21 Lock bar

Claims (3)

An attachment for fixing the car trolley for fixing the car trolley to the forklift,
A frame that fits snugly inside the wheel of the car carriage and allows the fork of the forklift to be inserted;
A rotating arm provided on the frame and rotatable by a rotating shaft;
A locking portion provided on the rotating arm,
The rotating arm swings between a first position where the locking portion does not protrude from the upper surface of the frame body and a second position where the locking arm protrudes,
The frame body is disposed inside the wheel of the car cart, the fork is inserted into the frame body, the car cart is lifted, and the rotating arm is changed from the first state to the second state,
The lateral movement of the car cart is restricted by the frame body, the longitudinal movement of the car carriage is restricted by the locking portion of the rotating arm , and
The car trolley fixing attachment, wherein the rotating arm includes a pressing portion, and the pressing portion is pressed by a lock bar of the forklift to change the rotating arm from the first state to the second state. . 2. The frame according to claim 1, wherein the frame has a notch facing the lock bar, and an upper portion of the lock bar can project from the upper surface of the frame through the notch. Attachment for car trolley fixing. 3. The car truck fixing attachment according to claim 1, wherein the pressing portion is formed to restrict movement of the frame body in the front-rear direction when pressed by the lock bar . 4.

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