JP3016050U - Stopper for holding forklift items - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a stopper for holding a transported object suitable for transporting a roll with a shaft having an eccentric center of gravity such as an unstable transported object by a forklift. [Structure] A link mechanism 3 is provided near a base end of a horizontal portion 1a of a fork 1 by a fixed stopper 2a and a hydraulic cylinder 5.
Movable stopper 2 that can be freely retracted and retracted via a and 3b
b, the movable stopper 2b rotates in the retracting direction when the cylinder rod 5a moves upward, the movable stopper 2b rotates in the protruding direction when the cylinder rod 5a moves downward, and the cylinder rod 5a moves downward in the stroke end. , The pin connecting portions 4 of the upper and lower links 3a and 3b slightly exceed the dead point p, and at the same time the movable stopper 2b reaches the horizontal position, and the movable stopper 2b cooperates with the fixed stopper 2a to fix the protrusion fixed to the transported object. It is a stopper for holding a transported object of a forklift designed to hold one piece.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fixing stopper for mounting an unstable load on a forklift.

[0002]

[Prior art]

 Forklifts are used as means for transporting various types of goods, but some of the goods may be unstable goods that are easily rocked or rotated. For example, there is a case where a forklift transports a roll with a shaft made of a cylindrical body having a central shaft protruding left and right.

When the shaft-equipped roll is mounted on a forklift, a working means is generally used in which the both ends of the shaft are supported by V-blocks fixed to the tip of the fork and lifted. In that case, there is no particular problem when the center of gravity of the entire shaft-equipped roll coincides with the center of the shaft, but the shaft-equipped roll has an eccentric shaft itself, or the roll has balance weights, etc. May not coincide with the center of the axis.

As described above, when the center of gravity is eccentric and the ends of the shaft are lifted by the forklift via the V block, the shaft-mounted roll will rotate on the V block until it becomes stable, making mounting difficult. In addition, there is a possibility that the vehicle may rotate due to vibration during traveling during transportation, which poses a danger in transportation work.

Further, if the shaft rotates, another problem arises in that when the shaft is inserted into another device or part to which the roll with a shaft is to be mounted after transportation, the mounting angle cannot be adjusted and the shaft cannot be inserted. There are not a few cases to do.

[0006]

[Problems to be solved by this device]

 This invention has been made to solve the above-mentioned problems of the prior art, and is a suitable transport object when transporting a roll with a shaft having an eccentric center of gravity such as an unstable transport product by a forklift. It is intended to provide a holding stopper.

[0007]

[Means for Solving the Problems]

 The present invention provides means for solving the above-mentioned problems, and a fixed stopper 2a is fixed near the base end of the horizontal portion 1a of a side L-shaped fork 1 in parallel with the horizontal portion 1a. At the same time, a bell crank-shaped upper link 3a and a lower link 3b are attached to the vertical portion 1b of the fork 1 at intervals in the vertical direction, and a support shaft 3a 'of the upper link 3a is pivotally attached to the vertical portion 1b of the fork 1. The support shaft 3b 'of the lower link 3b is vertically movable along the guide surface of the vertical portion 1b, and the lower end of the upper link 3a and the upper end of the lower link 3b are rotatably connected by a pin 4. The upper end of the upper link 3a is pin-connected 6 to the tip of the cylinder rod 5a of the hydraulic cylinder 5 driven in the vertical direction, and the movable stopper 2b is fixed to the lower end of the lower link 3b at a predetermined angle α. When the cylinder rod 5a moves upward, the movable stopper 2b rotates in the retracting direction, when the cylinder rod 5a moves downward, the movable stopper 2b rotates in the protruding direction, and the cylinder rod 5a moves downward. When the stroke end is reached, the pin connecting portion 4 of the upper and lower links 3a, 3b slightly exceeds the dead point, and at the same time, the movable stopper 2b reaches the horizontal position and is fixed to the transported object in cooperation with the fixed stopper 2a. Another object of the present invention is a stopper for holding a transported object of a forklift, which is characterized in that the protruding piece is sandwiched.

[0008]

[Action]

 According to the present invention, the fixed stopper 2a and the rotatable movable stopper 2b can hold the projecting piece fixed to the object to be conveyed, so that even if the object is an unstable object such as a roll with a shaft, It is possible to prevent the swing or rotation by simply fixing the projecting piece to the position corresponding to the stoppers 2a and 2b.

[0009]

Embodiment FIG. 1 shows an embodiment of the present invention. Reference numeral 1 denotes a fork for carrying a load of a forklift, which has a side L-shape as is well known. A fixed stopper 2a is fixed near the base end of the horizontal portion 1a of the L-shaped side fork 1 in parallel with the horizontal portion 1a.

On the other hand, a vertical portion 1b of the fork 1 is provided with a bell crank-shaped upper link 3a and a lower link 3b which are vertically spaced from each other, and a support shaft 3a 'of the upper link 3a is attached to the fork 1. The support shaft 3b 'of the lower link 3b is pivotally attached to the vertical portion 1b, and is vertically movable along the guide surface of the vertical portion 1b. The lower end of the upper link 3a and the upper end of the lower link 3b are connected to each other. Are rotatably connected by a pin 4.

The upper end of the upper link 3a is pin-connected 6 to the tip of a cylinder rod 5a of a hydraulic cylinder 5 driven in the vertical direction, and the lower end of the lower link 3b is provided with a movable stopper 2b at a predetermined angle α. When the cylinder rod 5a is fixed and moves upward, the movable stopper 2b rotates in the retracting direction as shown in FIG. 1 (a), and when the cylinder rod 5a moves downward, the movable stopper 2b moves to the position shown in FIG. As shown in b), it rotates in the protruding direction.

When the cylinder rod 5a reaches the downward stroke end, as shown in FIG. 1 (b), the pin connecting portions 4 of the vertical links 3a and 3b slightly exceed the dead point p, and at the same time, the movable stopper 2b. Has reached a horizontal position, and in cooperation with the fixed stopper 2a, the projecting piece fixed to the transported object can be clamped.

FIGS. 2 and 3 show an example in which a roll with a shaft is mounted on a fork 1 as an example of an unstable transported object, and FIG. 2 (a) is mounted on a floor via a pedestal 8. 2B is a side view showing a state in which the horizontal portion 1a of the fork 1 is inserted below the shaft 7a in order to lift the shaft-equipped roll 7. FIG. 2B shows the fork 1 being lifted to move the shaft via the V block 1c. FIG. 3 is a side view showing a state in which the attached roll 7 is supported, and FIG. 3 is a plan view thereof.

In the figure, 7 is a roll with a shaft, and 7a is a central axis thereof, which protrudes to the left and right as shown in FIG. 7b is a balance weight attached to the side surface of the roll 7 with a shaft, and 7c is a protrusion fixed to the balance weight 7b at an axially symmetrical position.

In the state of FIG. 2A, the cylinder rod 5a of the hydraulic cylinder 5 is at the upper limit position, and the movable stopper 2b is at the retracted position as shown in FIG. 1A. From this state, the fork 1 is lifted, and when the V groove of the V block 1c attached to the tip of the horizontal portion 1a of the fork 1 reaches a level where it comes into contact with the shaft 7a, the hydraulic cylinder 5 is driven to drive the cylinder rod 5a. 2B, the movable stopper 2b rotates in the projecting direction as shown in FIG. 1 (b), and when the cylinder rod 5a reaches the lower limit position, the movable stopper 2b reaches the horizontal position. As shown in b), the projecting piece 7c is sandwiched by the fixed stopper 2a and the movable stopper 2b.

Therefore, if the fork 1 is further lifted up, the shaft-equipped roll 7 is reliably mounted and supported on the fork 1. The shaft-equipped roll 7 tries to rotate clockwise in the figure due to an eccentric load due to the balance weight 7b, but since the projecting piece 7c is sandwiched between the fixed stopper 2a and the movable stopper 2b, an upward force is exerted on the movable stopper 2b. Even if it is applied, since the pin connecting portion 4 of the upper and lower links 3a and 3b slightly exceeds the dead point p, the pin connecting portion 4 is reliably held and even if a situation occurs in which the hydraulic pressure of the hydraulic cylinder 5 is released, It is safe because the clamping force is not released.

As described above, the forklift is allowed to travel with the projecting piece 7c being sandwiched between the fixed stopper 2a and the movable stopper 2b, so that the shaft-mounted roll 7 can be safely and reliably transported to a desired location. When unloading, the movable stopper 2b may be released in the reverse order.

In the above description, a roll with a shaft whose center of gravity is eccentric as an unstable transported object has been exemplified. However, any transported object may be used, and the stoppers 2a and 2b of the transported object are simply attached to the stoppers 2a and 2b. Only by fixing the protrusions to the corresponding positions, it is possible to reliably prevent unstable swinging or rotation of the transported object. Further, instead of the hydraulic cylinder 5, an air cylinder or a cylinder with an electric motor may be used with the same effect.

[0019]

[Effect of device]

 According to this invention, the movable stopper 2b rotates in the retracting direction when the cylinder rod 5a moves upward, and the movable stopper moves when the cylinder rod 5a moves downward, by using the configuration described in the utility model registration claim. When the cylinder rod 5a rotates in the protruding direction and the cylinder rod 5a reaches the downward stroke end, the pin connecting portion 4 of the upper and lower links 3a and 3b slightly exceeds the dead point, and at the same time, the movable stopper 2b moves to the horizontal position. By reaching and reaching the fixed stopper 2a so as to sandwich the projecting piece fixed to the conveyed object, even if the conveyed object is an unstable conveyed object such as a roll with a shaft having an eccentric center of gravity, The swaying or turning can be prevented only by fixing the projecting pieces to the positions corresponding to the stoppers 2a and 2b.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a side view showing an example in which a roll with shaft is mounted on a fork.

FIG. 3 is a plan view of the same.

[Explanation of symbols]

 1 Fork 1a Horizontal part 1b Vertical part 1c V block 2a Fixed stopper 2b Movable stopper 3a Upper link 3b Lower link 4 Connecting pin 5 Hydraulic cylinder 5a Cylinder rod 6 Pin connecting part 7 Shaft with roll 7a Central shaft 7b Balance weight 7c Projecting piece 8 Pedestal p dead point

Claims (4)

[Scope of utility model registration request] 1. A fixed stopper 2a is fixed in the vicinity of a base end of a horizontal portion 1a of a side L-shaped fork 1 in parallel with the horizontal portion 1a, and vertically spaced from a vertical portion 1b of the fork 1. Put the bell crank-shaped upper link 3a and the lower link 3b, and attach the support shaft 3a 'of the upper link 3a.
Is pivotally attached to the vertical portion 1b of the fork 1, and the support shaft 3b 'of the lower link 3b is vertically movable up and down along the guide surface of the vertical portion 1b so that the lower end of the upper link 3a and the upper end of the lower link 3b are Is rotatably connected by a pin 4, and the upper end of the upper link 3a is pin-connected 6 to the tip of a cylinder rod 5a of a hydraulic cylinder 5 driven in the vertical direction.
A movable stopper 2b is fixed to the lower end of the lower link 3b at a predetermined angle α, the movable stopper 2b rotates in the retracting direction when the cylinder rod 5a moves upward, and the movable stopper 2b moves when the cylinder rod 5a moves downward. When the cylinder rod 5a reaches the downward stroke end, the pin connecting portion 4 of the vertical links 3a and 3b slightly exceeds the dead point, and at the same time the movable stopper 2b moves to the horizontal position. A stopper for holding a conveyed object of a forklift, which reaches the movable member and clamps a protrusion fixed to the conveyed object in cooperation with the fixed stopper 2a. 2. The stopper for holding a transported object according to claim 1, wherein an air cylinder is used instead of the hydraulic cylinder 5. 3. The stopper for holding a transported article according to claim 1, wherein a cylinder with an electric motor is used instead of the hydraulic cylinder 5. 4. The stopper for holding a conveyed object according to claim 1, wherein the conveyed object is a roll with a shaft, which is a cylindrical body having a central shaft protruding left and right.