Rotary type extended grabbing arm of forklift

Abstract

The utility model discloses a rotary type extended grabbing arm of a forklift, which relates to the technical field of grabbing arms and comprises a mounting seat, a rotary connecting seat is arranged on the mounting seat, an extended arm is movably mounted on the rotary connecting seat, a positioning seat is arranged on the extended arm, and a rotating mechanism is arranged between the extended arm and the mounting seat. The rotating mechanism comprises a retainer fixedly mounted on the mounting seat, an outer gear ring is fixedly mounted at one end of the extension arm, a planetary gear is movably mounted on the retainer, a driving motor is fixedly mounted at the positioning seat, a driving shaft is fixedly mounted at the output tail end of the driving motor, a limiting sleeve is rotationally mounted on the driving shaft, and an inner gear is fixedly mounted on the limiting sleeve; a limiting rod is connected to the limiting sleeve, a clamping mechanism is arranged in the positioning base, and the clamping mechanism comprises a clamping arm movably installed in the positioning base. The clamping mechanism can clamp irregular workpieces, and the rotating mechanism can drive the clamping mechanism to rotate, so that the workpieces can be conveniently clamped from different angles.

Description

Technical Field

[0001] The utility model relates to the technical field of grab arms, in particular to a rotary extended grab arm of a forklift. Background Art

[0002] Forklifts are industrial handling vehicles widely used in warehousing, logistics, manufacturing, and other fields. They primarily use lifting forks to load, unload, stack, and transport palletized goods over short distances. Forklifts are highly mechanized, maneuverable, and versatile, significantly improving operational efficiency and reducing labor costs.

[0003] Forklifts are often used to transport workpieces in factories. During transportation, the forklift's fork extends into the bottom of the workpiece, and then the workpiece is lifted by the gantry system. The lifted workpiece can be moved to the processing position. However, the forklift can only lift some relatively regular workpieces. Therefore, a rotating extended grab arm of a forklift is proposed. Summary of the Invention

[0004] The purpose of the utility model is to provide a rotary extended grab arm of a forklift to solve the problem in the prior art that it is inconvenient for forklifts to transport irregular workpieces.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotary extension grab arm of a forklift, comprising a mounting seat, a rotating connecting seat provided on the mounting seat, an extension arm movably mounted on the rotating connecting seat, a positioning seat provided on the extension arm, a rotating mechanism provided between the extension arm and the mounting seat, the rotating mechanism comprising a retaining frame fixedly mounted on the mounting seat, an outer gear ring fixedly mounted on one end of the extension arm, a planetary gear movably mounted on the retaining frame, a drive motor fixedly mounted at the positioning seat, a drive shaft fixedly mounted on the output end of the drive motor, A limit sleeve is rotatably installed on the driving shaft, an internal gear is fixedly installed on the limit sleeve, a limit rod is connected to the limit sleeve, a clamping mechanism is provided in the positioning seat, the clamping mechanism includes a clamping arm movably installed in the positioning seat, a connecting leg is provided on the clamping arm, a driving frame is movably installed between the connecting legs, a screw nut is fixedly installed on the driving frame, a threaded screw is connected to the screw nut, one end of the threaded screw is connected to a transmission shaft, a clutch is provided on the transmission shaft, a connecting shaft is provided between the driving shaft and the clutch, and the clutch can disconnect the power of the transmission shaft.

[0006] Preferably, an electric push rod is fixedly installed inside the driving shaft, and the output end of the electric push rod is fixed on the limit rod, and the electric push rod can drive the limit rod to move forward and backward.

[0007] Preferably, the output end of the drive motor is provided with a coupling, the drive shaft is installed on the output end of the drive motor through the coupling, the limit sleeve is provided with a slot, the limit rod is connected to the limit sleeve through the slot, and the drive motor can drive the drive shaft to rotate.

[0008] Preferably, the inner gear is rotatably mounted on the drive shaft via a limiting sleeve, and the inner gear is meshed with the planetary gears. The planetary gears are movably mounted in the outer gear ring via a retaining frame, and the planetary gears are meshed with the outer gear ring. The drive shaft can drive the inner gear to rotate.

[0009] Preferably, a movable shaft is provided on the clamping arm, and the clamping arm is movably installed in the positioning seat through the movable shaft, and the driving frame can drive the clamping arm to unfold.

[0010] Preferably, a positioning frame is provided in the positioning seat, and the threaded screw is movably installed in the positioning seat through the positioning frame, and the transmission shaft can drive the threaded screw to rotate.

[0011] Preferably, the drive frame is movably mounted on the threaded screw via a screw nut, one end of the transmission shaft is fixed to the threaded screw, and the other end of the transmission shaft is connected to the clutch, and the screw nut can be driven to move when the threaded screw rotates.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. In this application, the driving shaft can drive the connecting shaft to rotate, and after the connecting shaft rotates, it will drive the transmission shaft to rotate. After the transmission shaft rotates, it will drive the threaded screw to rotate. During the rotation of the threaded screw, it will drive the driving frame on the screw nut to move forward and backward. When the driving frame moves forward, the clamping arm will expand, and when the driving frame moves backward, the clamping arm will close, thereby clamping irregular workpieces.

[0014] 2. In this application, after the electric push rod is retracted, the limit rod will be stuck in the limit sleeve. When the limit rod is stuck in the limit sleeve, the drive shaft can be driven to rotate by the drive motor. After the drive shaft rotates, it will drive the internal gear on the limit sleeve to rotate. After the internal gear rotates, it will drive the outer ring gear to rotate around the planetary gear, thereby driving the extension arm to rotate, making it easier to clamp the workpiece from different angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the rotating mechanism of the present utility model;

[0017] Figure 3 This is a cross-sectional view of the limit sleeve of the utility model;

[0018] Figure 4 This is a schematic diagram of the clamping mechanism of the present utility model;

[0019] Figure 5 For this utility model Figure 4 Enlarged view of point A in the middle.

[0020] Numbers in the figure: 1. Positioning seat; 2. Extension arm; 3. Mounting seat; 4. Rotating connecting seat; 5. Rotating mechanism; 501. Outer ring gear; 502. Drive shaft; 503. Drive motor; 504. Retaining frame; 505. Planetary gear; 506. Internal gear; 507. Limiting sleeve; 508. Electric push rod; 509. Limiting rod; 6. Clamping mechanism; 601. Clamping arm; 602. Movable shaft; 603. Connecting leg; 604. Screw nut; 605. Clutch; 606. Drive frame; 607. Threaded screw; 608. Transmission shaft; 609. Connecting shaft. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figure 1 and Figure 2 As shown, the utility model provides a technical solution for a rotary extended grab arm of a forklift, including a mounting seat 3, a rotating connecting seat 4 is provided on the mounting seat 3, an extension arm 2 is movably installed on the rotating connecting seat 4, a positioning seat 1 is provided on the extension arm 2, and a rotating mechanism 5 is provided between the extension arm 2 and the mounting seat 3. The rotating mechanism 5 includes a retaining frame 504 fixedly mounted on the mounting seat 3, an outer gear ring 501 is fixedly mounted on one end of the extension arm 2, and a clamping mechanism 6 is provided in the positioning seat 1. The clamping mechanism 6 can clamp irregular workpieces, and the rotating mechanism 5 can rotate with the clamping mechanism 6, so as to facilitate clamping workpieces from different angles.

[0023] like Figure 2 and Figure 3As shown, the rotating mechanism 5 includes a retaining frame 504 fixedly mounted on the mounting seat 3, an outer ring gear 501 fixedly mounted on one end of the extension arm 2, a planetary gear 505 movably mounted on the retaining frame 504, a driving motor 503 fixedly mounted on the positioning seat 1, a driving shaft 502 fixedly mounted on the output end of the driving motor 503, a limiting sleeve 507 rotatably mounted on the driving shaft 502, an internal gear 506 fixedly mounted on the limiting sleeve 507, a limiting rod 509 connected to the limiting sleeve 507, an electric push rod 508 fixedly mounted inside the driving shaft 502, and the output end of the electric push rod 508 fixed on the limiting rod 509.

[0024] Specifically, after the electric push rod 508 is retracted, the limit rod 509 will be stuck in the limit sleeve 507. When the limit rod 509 is stuck in the limit sleeve 507, the drive motor 503 can be used to drive the drive shaft 502 to rotate. After the drive shaft 502 rotates, it will drive the internal gear 506 on the limit sleeve 507 to rotate. After the internal gear 506 rotates, it will drive the outer ring gear 501 to rotate around the planetary gear 505, thereby driving the extension arm 2 to rotate, making it easier to clamp the workpiece from different angles.

[0025] like Figure 3 and Figure 5 As shown, the clamping mechanism 6 includes a clamping arm 601 movably mounted in the positioning seat 1, a connecting leg 603 is provided on the clamping arm 601, a driving frame 606 is movably mounted between the connecting legs 603, a screw nut 604 is fixedly mounted on the driving frame 606, a threaded screw 607 is connected to the screw nut 604, one end of the threaded screw 607 is connected to a transmission shaft 608, a clutch 605 is provided on the transmission shaft 608, a connecting shaft 609 is provided between the drive shaft 502 and the clutch 605, a movable shaft 602 is provided on the clamping arm 601, and the clamping arm 601 is movably mounted in the positioning seat 1 through the movable shaft 602.

[0026] Specifically, the driving shaft 502 can drive the connecting shaft 609 to rotate, and after the connecting shaft 609 rotates, it drives the transmission shaft 608 to rotate. After the transmission shaft 608 rotates, it drives the threaded screw 607 to rotate. During the rotation of the threaded screw 607, it drives the driving frame 606 on the screw nut 604 to move forward and backward. When the driving frame 606 moves forward, the clamping arm 601 will expand, and when the driving frame 606 moves backward, the clamping arm 601 will close, thereby clamping irregular workpieces.

[0027] Working principle: when in use, first install the entire device on the mast system of the forklift through the mounting base 3, and then the clutch 605 can be controlled to engage. After the clutch 605 is engaged, the drive motor 503 can be started. After starting the drive motor 503, it will drive the drive shaft 502 to rotate. After the drive shaft 502 rotates, it will drive the connecting shaft 609 to rotate. After the connecting shaft 609 rotates, it will drive the transmission shaft 608 to rotate. After the transmission shaft 608 rotates, it will drive the threaded screw 607 to rotate. During the rotation of the threaded screw 607, it will drive the drive frame 606 on the screw nut 604 to move back and forth. When the drive frame 606 moves forward, the clamping arm 601 will expand, and when the drive frame 606 moves backward, the clamping arm 601 will close, thereby clamping The clutch 605 can be controlled to disengage, and the electric push rod 508 can be retracted after the clutch 605 is disengaged. After the electric push rod 508 is retracted, the limit rod 509 will be stuck in the limit sleeve 507, so that the limit sleeve 507 cannot rotate on the drive shaft 502. At this time, the drive shaft 502 will drive the inner gear 506 on the limit sleeve 507 to rotate. Since the inner gear 506 is engaged with the planetary gear 505, the planetary gear 505 is movably installed in the outer ring gear 501 through the retaining frame 504, and the planetary gear 505 is engaged with the outer ring gear 501. Therefore, after the inner gear 506 rotates, it will drive the outer ring gear 501 to rotate around the planetary gear 505, thereby driving the extension arm 2 to rotate, which is convenient for clamping workpieces from different angles.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A rotary extension grab arm of a forklift, comprising a mounting seat (3), a rotating connecting seat (4) provided on the mounting seat (3), an extension arm (2) movably mounted on the rotating connecting seat (4), and a positioning seat (1) provided on the extension arm (2), characterized in that: A rotating mechanism (5) is provided between the extension arm (2) and the mounting seat (3), the rotating mechanism (5) comprising a retaining frame (504) fixedly mounted on the mounting seat (3), an outer gear ring (501) fixedly mounted on one end of the extension arm (2), a planetary gear (505) movably mounted on the retaining frame (504), a driving motor (503) fixedly mounted on the positioning seat (1), a driving shaft (502) fixedly mounted on the output end of the driving motor (503), a limiting sleeve (507) rotatably mounted on the driving shaft (502), an internal gear (506) fixedly mounted on the limiting sleeve (507), a limiting rod (507) connected to the limiting sleeve (507), and a plurality of rotating shafts (507) connected to the limiting sleeve (507). 09), a clamping mechanism (6) is provided in the positioning seat (1), the clamping mechanism (6) includes a clamping arm (601) movably mounted in the positioning seat (1), a connecting leg (603) is provided on the clamping arm (601), a driving frame (606) is movably mounted between the connecting legs (603), a screw nut (604) is fixedly mounted on the driving frame (606), a threaded screw (607) is connected to the screw nut (604), one end of the threaded screw (607) is connected to a transmission shaft (608), a clutch (605) is provided on the transmission shaft (608), and a connecting shaft (609) is provided between the driving shaft (502) and the clutch (605).

2. The rotary extended grab arm of a forklift according to claim 1, characterized in that: An electric push rod (508) is fixedly installed inside the driving shaft (502), and the output end of the electric push rod (508) is fixed on the limiting rod (509).

3. The rotary extension grab arm of a forklift according to claim 2, characterized in that: The output end of the drive motor (503) is provided with a coupling, the drive shaft (502) is mounted on the output end of the drive motor (503) via the coupling, the limiting sleeve (507) is provided with a slot, and the limiting rod (509) is connected to the limiting sleeve (507) via the slot.

4. The rotary extendable grab arm of a forklift according to claim 3, characterized in that: The inner gear (506) is rotatably mounted on the drive shaft (502) via a limiting sleeve (507), and the inner gear (506) is meshed with the planetary gear (505). The planetary gear (505) is movably mounted in the outer gear ring (501) via a retaining frame (504), and the planetary gear (505) is meshed with the outer gear ring (501).

5. The rotary extended grab arm of a forklift according to claim 4, characterized in that: A movable shaft (602) is provided on the clamping arm (601), and the clamping arm (601) is movably mounted in the positioning seat (1) via the movable shaft (602).

6. The rotary extendable grab arm of a forklift according to claim 1, characterized in that: A positioning frame is provided in the positioning seat (1), and the threaded screw (607) is movably mounted in the positioning seat (1) via the positioning frame.

7. The rotary extendable grab arm of a forklift according to claim 1, characterized in that: The driving frame (606) is movably mounted on the threaded screw (607) via a screw nut (604), one end of the transmission shaft (608) is fixed on the threaded screw (607), and the other end of the transmission shaft (608) is connected to the clutch (605).

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