Pallet fork for stacking coiled goods

Abstract

The invention relates to the technical field of forklifts, and discloses a pallet fork for stacking coiled cargos, which comprises a frame, the bottom of the frame is arranged on a chassis, wheels are arranged on the chassis, slide rails are arranged on two sides of the frame, two ends of a fork frame are slidably connected onto the slide rails, the pallet fork further comprises a lead screw, a nut is arranged in the middle of the fork frame, and the lead screw is connected with the lead screw. The lead screw is matched with the nut, the two ends of the lead screw are rotationally connected to the upper end and the lower end of the frame respectively, a wheel shaking mechanism is arranged at the top of the frame and drives the lead screw to rotate, the fork frame comprises a transverse rod and a fork arm arranged in the middle of the transverse rod, and the fork arm is connected with the transverse rod. The two ends of the cross bar are connected into the sliding rails in a sliding mode, and the nut is arranged in the middle of the cross bar.

Description

Technical Field

[0001] The present invention relates to the technical field of forklifts, and particularly to a forklift fork for palletizing rolled goods. Background Art

[0002] For a general forklift fork, goods are placed on the fork arms. When transporting rolled goods, there is a risk of rolling. Therefore, improvement is necessary.

[0003] CN104444961A discloses a paper roll handling forklift, including a forklift frame. A mechanical clamping arm device for clamping paper rolls is installed on the forklift frame. The mechanical clamping arm device includes a bracket, a clamping arm seat plate, a rotating frame, a first clamping arm, a second clamping arm, a lifting oil cylinder, a first oil cylinder, and a second oil cylinder. The bracket is vertically slidably installed on the forklift frame. A lifting oil cylinder for driving the bracket to lift relative to the forklift frame is connected to the bracket. The clamping arm seat plate is fixed on the bracket. The cylinder bodies of the first oil cylinder and the second oil cylinder are respectively hinged to both ends of the rotating frame. The telescopic rods of the first oil cylinder and the second oil cylinder are respectively hinged to the first clamping arm and the second clamping arm. Through the cooperative work of the first oil cylinder and the second oil cylinder, the present invention can achieve the relative opening and clamping of the first clamping arm and the second clamping arm, so as to pick up the paper roll through the first clamping arm and the second clamping arm to load goods, and put down the paper roll through the first clamping arm and the second clamping arm to unload goods.

[0004] The forklift fork of this kind of forklift uses the first clamping arm and the second clamping arm to clamp the outer ring of the goods for handling. This way can avoid the goods from rolling when handling rolled goods. However, this structure is too complex and the cost is also high. In addition, when the first clamping arm and the second clamping arm clamp the goods, it is very likely to damage the surface of the goods. Therefore, improvement is necessary. Summary of the Invention

[0005] The purpose of the present invention is to provide a forklift fork for palletizing rolled goods, which can avoid the rolled goods from rolling and falling off during handling, and has a simple structure.

[0006] To achieve the above object, the present invention provides the following technical solution: A forklift for palletizing rolled goods, including a frame, the bottom of the frame is arranged on a chassis, wheels are arranged on the chassis, slide rails are arranged on both sides of the frame, and both ends of the fork frame are slidably connected to the slide rails. It also includes a lead screw, a nut is arranged at the middle position of the fork frame, the lead screw and the nut cooperate with each other, both ends of the lead screw are respectively rotatably connected to the upper and lower ends of the frame, a handwheel mechanism is provided at the top of the frame, and the handwheel mechanism drives the lead screw to rotate. The fork frame includes a cross bar and fork arms arranged in the middle of the cross bar, both ends of the cross bar are slidably connected in the slide rails, and the nut is arranged at the middle position of the cross bar. When in use, push the forklift to the place of the rolled goods, then adjust the fork frame to a suitable height, insert the fork arms into the through holes in the middle of the goods, then use the rocker mechanism to rotate the lead screw, lift the fork frame to a suitable height, and then push the forklift to the predetermined position to perform the palletizing process. During palletizing, lower the fork frame until the bottom of the goods touches the cargo stack, and then pull out the fork arms, thus completing the palletizing. By using the method of inserting the fork arms into the middle of the goods, it is possible to prevent the goods from rolling when transporting the rolled goods. In addition, the structure of the present invention is simple and completely relies on manual operation, which can be applied to occasions where it is inconvenient to replenish energy.

[0007] As a preferred embodiment of the present invention, the nut includes two cooperating components, a fixed ring is fixed outside the nut, a rotating ring is rotatably connected to the outer ring of the fixed ring, two sliding grooves are arranged on the fixed ring, the components are slidably connected in the sliding grooves, and it also includes two connecting rods, one end of each connecting rod is rotatably connected to the rotating ring, and the other end of the connecting rod is rotatably connected to the component. When there is no cargo on the fork frame, the rotating ring can be rotated, the rotating ring drives the connecting rod, and the component is pulled out of the sliding groove, so that the cross bar has no contact with the lead screw and the cross bar can move up and down. This greatly speeds up the adjustment speed. When the fork arms are inserted into the goods, the rotating ring can be rotated in the reverse direction again to make the connecting rod push the components closer to each other, so that the two components are combined into a bolt. At this time, using the crank mechanism again to drive the lead screw to rotate can drive the fork frame and the goods to move up and down.

[0008] As a preferred embodiment of the present invention, a handle is arranged on the rotating ring. The handle is used to rotate the rotating ring.

[0009] As a preferred embodiment of the present invention, mating convex blocks and slots are arranged on the end faces of the components.

[0010] As a preferred embodiment of the present invention, the horizontal bar is provided with a first stopper and a second stopper, and the outer ring of the rotating ring is provided with a protrusion, when the protrusion contacts the first stopper, the two components are combined into a nut, and when the protrusion contacts the second stopper, the two components are disengaged from the lead screw. The protrusion and the stopper are used for positioning.

[0011] As a preferred embodiment of the present invention, the top of the screw is provided with a marking line, the rocker mechanism is provided with a mark, and the slide rail is provided with a scale line. When the marking line and the mark are aligned, the horizontal bar is adjusted to be aligned with any scale line, and then the rotating disk is rotated. When the two combined parts are synthesized into a nut, the nut and the screw cooperate.

[0012] As a preferred embodiment of the present invention, two bottom bars are further included, and the bottom bars are located below the two sides of the fork arm. The bottom bars are used to support the bottom of the goods and assist in supporting the goods.

[0013] As a preferred embodiment of the present invention, the frame includes a crossbeam and two longitudinal beams, the longitudinal beams are arranged at both ends of the crossbeam, and each longitudinal beam is provided with a slide rail at the front and rear ends respectively, and openings are provided at both ends of the crossbar, the longitudinal beams are inserted into the openings, and the openings have slideways that cooperate with the slide rails.

[0014] Compared with the prior art, the present invention has the following beneficial effects: When in use, push the fork to the rolled goods, then adjust the fork frame to a suitable height, insert the fork arm into the through hole in the middle of the goods, and then use the rocker mechanism to rotate the screw to lift the fork frame to a suitable height, and then push the fork to the predetermined position to perform the stacking process. When stacking, lower the fork frame until the bottom of the goods touches the pile, and then pull out the fork arm, and the stacking is completed. The method of inserting the fork arm into the middle of the goods can prevent the goods from rolling when transporting rolled goods. In addition, the present invention has a simple structure and is completely operated manually, so it can be used in situations where it is inconvenient to recharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0016] Figure 2 for Figure 1 A local enlarged schematic diagram of point A.

[0017] Figure 3 for Figure 1 A partial enlarged schematic diagram of point B.

[0018] Figure 4 for Figure 1 A partial enlarged schematic diagram of point C.

[0019] Figure 5 Schematic diagram of component parts. Specific implementation manners

[0020] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0022] Please refer to Figures 1-5 , the present invention provides a technical solution: a forklift for palletizing rolled goods, including a frame 1, the bottom of the frame 1 is arranged on a chassis 2, wheels 21 are arranged on the chassis 2, the frame 1 includes a cross beam 11 and two longitudinal beams 12, the longitudinal beams 12 are arranged at both ends of the cross beam 11, and a slide rail 121 is arranged at each of the front and rear ends of each longitudinal beam 12.

[0023] Both ends of the fork frame 3 are slidably connected to the slide rails 121.

[0024] It further includes a lead screw 4, a nut 5 is arranged at the middle position of the fork frame 3, the lead screw 4 and the nut 5 are matched with each other, and both ends of the lead screw 4 are respectively rotatably connected to the upper and lower ends of the frame 1.

[0025] The top of the frame 1 is provided with a handwheel mechanism 6, the handwheel mechanism 6 drives the lead screw 4 to rotate, the fork frame 3 includes a cross bar 31 and fork arms 32 arranged in the middle of the cross bar 31, both ends of the cross bar 31 are slidably connected in the slide rails 121, and the nut 5 is arranged at the middle position of the cross bar 31.

[0026] The nut 5 includes two components 51 that cooperate with each other. A fixed ring 71 is fixed outside the nut 5. The outer ring of the fixed ring 71 is rotatably connected to a rotating ring 72. The rotating ring 72 is provided with a handle 721. The handle is used to rotate the rotating ring. Two slide grooves 711 are provided on the fixed ring 71. The component 51 is slidably connected in the slide grooves 711. It also includes two connecting rods 73. One end of the connecting rod 73 is rotatably connected to the rotating ring 72, and the other end of the connecting rod 73 is rotatably connected to the component 51. When there is no cargo on the fork frame, the rotating ring can be rotated, and the rotating ring drives the connecting rod to pull the component out of the slide groove, so that the cross bar has no contact with the lead screw, and the cross bar can move up and down. The adjustment speed is greatly accelerated. After the fork arm is inserted into the cargo, the rotating ring can be rotated in the opposite direction again, so that the connecting rod pushes the components to move closer to each other, so that the two components are combined into one bolt. At this time, the crank mechanism is used again to drive the lead screw to rotate, so that the fork frame and the cargo can be driven to move up and down.

[0027] The end surface of the component 51 is provided with a mating protrusion 511 and a slot 512 .

[0028] The horizontal bar 31 is provided with a first stopper 311 and a second stopper 312, and the outer ring of the rotating ring 72 is provided with a protrusion 722. When the protrusion 722 contacts the first stopper 311, the two components are combined into a nut, and at this time, the central axis of the connecting rod 73 passes through the center of the rotating ring. When the protrusion contacts the second stopper, the two components are out of contact with the lead screw, and the protrusion and the stopper are used for positioning.

[0029] The top of the lead screw 4 is provided with a marking line 41, the rocker mechanism 6 is provided with a mark 61, and the slide rail 121 is provided with a scale line 12a. When the marking line and the mark are aligned, the horizontal bar is adjusted to be aligned with any scale line, and then the rotating disk is rotated. When the two combined parts are synthesized into a nut, the threads on the nut and the lead screw are just engaged with each other.

[0030] It also includes two bottom bars 8, which are located below the two sides of the fork arm 32. The bottom bars are used to support the bottom of the goods and assist in supporting the goods.

[0031] Openings 31a are provided at both ends of the crossbar 31, and the longitudinal beam is inserted into the openings. The openings have slideways 313 matched with the slide rails.

[0032] When in use, push the forklift forks to the place of coiled goods, and then pull the handle to separate the nut into two combined parts. At this time, the fork frame is disengaged from the lead screw, and the upward position of the fork frame can be manually adjusted. When adjusted to the appropriate position, insert the fork arms into the through holes in the middle of the goods, then pull the handle to combine the two combined parts into a nut, and then use the rocker mechanism to rotate the lead screw to lift the fork frame to the appropriate height. Then push the forklift forks to the predetermined position to perform the palletizing process. During palletizing, lower the fork frame until the bottom of the goods touches the goods stack, and then pull out the fork arms, and the palletizing is completed. By adopting the method of inserting the fork arms into the middle of the goods, it is possible to prevent the goods from rolling when transporting coiled goods. In addition, the structure of the present invention is simple and fully operated manually, and it can be applied to occasions where it is inconvenient to replenish energy.

Claims

1. A fork for stacking rolled goods, comprising a frame, the bottom of the frame is arranged on a chassis, the chassis is provided with wheels, both sides of the frame are provided with slide rails, and both ends of the fork frame are slidably connected to the slide rails, characterized in that: It also includes a screw, a nut is arranged in the middle position of the fork frame, the screw and the nut cooperate with each other, the two ends of the screw are rotatably connected to the upper and lower ends of the frame respectively, the top of the frame is provided with a rocker mechanism, the rocker mechanism drives the screw to rotate, the fork frame includes a cross bar and a fork arm arranged in the middle of the cross bar, the two ends of the cross bar are slidably connected in the slide rail, and the nut is arranged in the middle position of the cross bar.

2. The fork for stacking rolled goods according to claim 1, characterized in that: The nut includes two components that cooperate with each other. A fixed ring is fixed outside the nut. The outer ring of the fixed ring is rotatably connected to a rotating ring. Two sliding grooves are provided on the fixed ring. The components are slidably connected in the sliding grooves and also include two connecting rods. One end of the connecting rod is rotatably connected to the rotating ring, and the other end of the connecting rod is rotatably connected to the component.

3. The fork for stacking rolled goods according to claim 2, characterized in that: A handle is arranged on the rotating ring.

4. The fork for stacking rolled goods according to claim 3, characterized in that: The end surface of the component is provided with matching protrusions and slots.

5. The fork for stacking rolled goods according to claim 2, characterized in that: The horizontal bar is provided with a first stopper and a second stopper, and the outer ring of the rotating ring is provided with a protrusion. When the protrusion contacts the first stopper, the two components are combined into a nut, and when the protrusion contacts the second stopper, the two components are disengaged from the lead screw.

6. The fork for stacking rolled goods according to claim 2, characterized in that: The top of the lead screw has a marking line, the rocker mechanism is provided with a mark, and the slide rail is provided with a scale line. When the marking line and the mark are aligned, the horizontal bar is adjusted to align with any scale line, and then the rotating disk is rotated. When the two combined parts are combined into a nut, the nut and the lead screw are matched.

7. The fork for stacking rolled goods according to claim 1, characterized in that: The invention also comprises two bottom bars, which are located below the two sides of the fork arm.

8. The fork for stacking rolled goods according to claim 1, characterized in that: The frame includes a crossbeam and two longitudinal beams, the longitudinal beams are arranged at both ends of the crossbeam, and each longitudinal beam is provided with a slide rail at the front and rear ends. Openings are provided at both ends of the crossbar, and the longitudinal beams are inserted into the openings. The openings have slideways that match the slide rails.

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