A rotary winding mechanism

Abstract

The utility model relates to a rotary winding mechanism belonging to the crane technical field, include: rotation subassembly, install winch's winding mounting seat, drive assembly, rotation subassembly includes rotation axis, winding mounting seat is connected with the boom of crane through rotation subassembly, and drive assembly makes winding mounting seat rotate around rotation axis, and makes winch be located boom directly below or boom lateral side, through the rotation of rotation axis, realize winch work position and the switching of storage position, solved the problem that boom is in the work after full contract shrink's deposit position and winch's installation position interfere with each other.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rotary winding mechanism and belongs to the crane technical field. BACKGROUND

[0002] In the operation process of the folding arm large tonnage crane, in order to realize the working condition of greater hoisting range and high-altitude carrying, a suitable jib and winding mechanism (the winding mechanism generally includes: winding mounting seat, winch, steel wire rope, lifting hook, etc.) is usually installed, and more and more customers require that the jib is in full folding posture during the travelling process, the lifting arm is parallel to the carriage and is required to be equipped with a good winding mechanism at the same time.

[0003] However, with the increase of the lifting capacity of the lifting winch, the size of the winch itself gradually increases, but the installation space of the lifting arm is limited, and the placement position of the fully folded and contracted jib overlaps and interferes with the installation position of the winch. Therefore, solving the mutual interference between the placement position of the fully folded and contracted jib after the operation is completed and the installation position of the winch has become an important problem at the present stage. SUMMARY

[0004] The utility model aims at the shortage of the prior art, and provides a rotary winding mechanism, which has simple structure and lower cost, and solves the problem of mutual interference between the placement position of the fully folded and contracted jib after the operation is completed and the installation position of the winch.

[0005] The technical scheme of the utility model is as follows:

[0006] A rotary winding mechanism, characterized in that it comprises: a rotating assembly, a winding mounting seat provided with a winch, and a driving assembly; the rotating assembly comprises a rotating shaft; the winding mounting seat is connected with the lifting arm of the crane through the rotating assembly; and the driving assembly drives the winding mounting seat to rotate around the rotating shaft, so that the winch is located directly below the lifting arm or beside the lifting arm.

[0007] In the above scheme, the rotating shaft is rotated to switch the winch working position (located directly below the lifting arm, used for vertical lifting) and the storage position (located beside the lifting arm, the jib is fully folded and contracted directly below the lifting arm), so that the mutual interference between the placement position of the fully folded and contracted jib after the operation is completed and the installation position of the winch is solved.

[0008] Further, the rotating assembly further comprises: a shaft sleeve and a rotating support; the shaft sleeve is fixedly installed on the lifting arm, and an inner wall of the shaft sleeve is embedded with an oil-free lubricating bearing; the oil-free lubricating bearing is in gap cooperation with the rotating shaft to realize the rotary support of the rotating shaft, so that the switching of the winch working position and the storage position is facilitated. The rotating support is in the shape of C and is formed by extending and bending the side of the winding mounting seat upwards, the two ends of the rotating support are fixedly connected with the two ends of the rotating shaft respectively, and the synchronous rotating action of the winding mounting seat and the rotating shaft is realized.

[0009] Further, the driving assembly is an electric motor or a hydraulic motor, the motor is connected to the rotating shaft to drive the rotating shaft to drive the winch mounting seat and the winch to switch between the working position and the storage position.

[0010] Further, the driving assembly is a horizontal telescopic oil cylinder, the bottom of the horizontal telescopic oil cylinder is hingedly connected to the boom, and the piston rod end of the horizontal telescopic oil cylinder is hingedly connected to the winch mounting seat.

[0011] Further, the rotating shaft is perpendicular to the length direction of the boom, so as to be matched with the horizontal telescopic oil cylinder to switch the winch between the two working positions, and the installation space of the horizontal telescopic oil cylinder is small.

[0012] Further, the driving assembly is an electric telescopic rod, the fixed end of the electric telescopic rod is hingedly connected to the boom, and the extending end of the electric telescopic rod is hingedly connected to the winch mounting seat.

[0013] The utility model discloses simple and reasonable structure, production and manufacture are easy, solve the problem that the boom is placed in the full folding retraction position and the installation position of the winch interferes with each other after operation, only use an electric motor or a single telescopic oil cylinder, the winch can be rotated around the rotating shaft as the center shaft to avoid the boom movement, the number of horizontal telescopic oil cylinders is reduced, the cost is reduced, the structure is simpler, and the installation is convenient, and the working efficiency is improved. ACCURACY OF DRAWINGS

[0014] Figure 1 It is the state schematic view of the utility model installation in the boom (the boom is stretched out, and the winch is in the working position);

[0015] Figure 2 It is the state schematic view of the utility model installation in the boom (the boom is stretched out, and the winch is in the working position); Figure 1 It is the state schematic view of the utility model installation in the boom (the boom is stretched out, and the winch is in the working position);

[0016] Figure 3 It is the state schematic view of the utility model installation in the boom (the boom is stretched out, and the winch is in the working position);

[0017] Figure 4 It is the state schematic view of the utility model installation in the boom (the boom is stretched out, and the winch is in the working position);

[0018] Figure 5 It is the state schematic view of the utility model installation in the boom (the boom is stretched out, and the winch is in the working position); Figure 4 It is the state schematic view of the utility model installation in the boom (the boom is stretched out, and the winch is in the working position);

[0019] Figure 6 It is the state schematic view of the utility model installation in the boom (the boom is stretched out, and the winch is in the working position);

[0020] Figure 7 The structure schematic diagram of the utility model is installed in the boom (winch is in the working position);

[0021] Figure 8 The explosion view of the utility model;

[0022] In the drawing: 1 boom, 2 horizontal telescopic oil cylinder, 3 winch mounting seat, 4 winch, 5 rotating shaft, 6 fly arm, 7 connecting rod mechanism, 8 luffing oil cylinder, 9 connecting arm, 10 fixed shaft, 11 shaft sleeve, 12 rotating support, 13 U-shaped component, 13 oil-free lubrication bearing. DETAILED DESCRIPTION

[0023] A rotary winch mechanism, it includes: rotating assembly, winch mounting seat 3, winch 4, drive assembly, winch mounting seat 3 and winch 4 are fixedly connected through bolt and nut.

[0024] As Figure 5 , Figure 6 , Figure 7 , Figure 8 Indicated, rotating assembly includes rotating shaft 5, shaft sleeve 11, rotating support 12. Shaft sleeve 11 is fixed to boom 1, and oil-free lubrication bearing 13 is embedded in the inner wall of the shaft sleeve, and the oil-free lubrication bearing is in clearance fit with the rotating shaft to realize the rotary support of the rotating shaft; Rotating support 12 is C-shaped, which is bent upward from the side of winch mounting seat 3, and the two ends of the rotating support are fixedly connected to the two ends of the rotating shaft to realize the synchronous rotary motion of the winch mounting seat and the rotating shaft. The winch mounting seat is rotated around the rotating shaft by the drive assembly, so that the winch is located in the working position directly below the boom or in the storage position beside the boom.

[0025] In an embodiment of the utility model, the drive assembly is a motor (both electric motor and hydraulic motor can be used), the motor is drivingly connected to the rotating shaft to drive the winch mounting seat and the winch to switch back and forth between the working position and the storage position.

[0026] In an embodiment of the utility model, the drive assembly is a horizontal telescopic oil cylinder 2, the cylinder bottom of the horizontal telescopic oil cylinder is hingedly installed on the boom through a hinge piece, the piston rod end thereof is hingedly installed on the winch mounting seat 3 through a hinge piece and a U-shaped component 13, and the rotating shaft is perpendicular to the length direction of the boom.

[0027] In an embodiment of the utility model, the drive assembly is an electric telescopic rod, the fixed end of the electric telescopic rod is hingedly installed on the boom, and the extended end thereof is hingedly installed on the winch mounting seat, so that the winch mounting seat edge is directly pushed and pulled by the electric telescopic rod.

[0028] As Figure 1 , Figure 2 , Figure 3 , Figure 4 ,Figure 5 As shown, the boom 1 and the horizontal telescopic oil cylinder 2 are connected to the left lower side of the middle part of the boom 1 near the connecting arm 9, and form a hinge pair with the U-shaped member 13 on the boom 1 to determine the position of the horizontal telescopic oil cylinder 2. The rotating shaft 5 and the boom 1 are connected to the left lower side of the middle part of the boom 1 away from the connecting arm 9, and form a hinge pair with the shaft sleeve 11 on the boom 1 to determine the position of the rotating shaft 5. The boom 1 and the winch mounting seat 3 are connected to rotate and telescope around the rotating shaft 5 through the horizontal telescopic oil cylinder 2, so as to realize the position switching of the winch.

[0029] As shown in the figure, Figure 1 The connecting arm 9 and the boom 1 are fixedly connected through the fixed shaft 10 and the split pin. Figure 3 As shown in the figure, The jib 6 and the connecting arm 9 are connected through the connecting rod mechanism 7, and the jib 6 can be folded through the luffing oil cylinder 8.

[0030] Figure 1 , Figure 7 As shown in the figure, When the jib 6 starts to work, it is unfolded outward through the luffing oil cylinder 8, and then the horizontal telescopic oil cylinder 2 is fully retracted to drive the winch mounting seat 3 and the winch 4 to retract. When the horizontal telescopic oil cylinder 2 is fully retracted, the winch mounting seat 3 is just rotated around the rotating shaft 5 to be directly below the boom 1, so as to facilitate the normal work of the winch steel wire rope.

[0031] Figure 3 , Figure 6 As shown in the figure, After the jib 6 finishes work, the winch mounting seat 3 drives the winch 4 to gradually unfold through the horizontal telescopic oil cylinder 2. When the horizontal telescopic oil cylinder 2 is fully extended, the winch mounting seat 3 is just rotated around the rotating shaft 5 to be parallel to the side of the boom 1, so as to prevent the jib 6 from interfering with the winch 4, and then the jib 6 is fully folded and retracted through the luffing oil cylinder 8.

Claims

1. A rotary hoisting mechanism, characterized in that, include: Rotating components, including a rotating shaft; The winch mounting base is equipped with a winch and is connected to the boom of the crane via a rotating assembly; The drive assembly rotates the winch mount around the rotation axis, positioning the winch directly below or beside the boom.

2. The rotary winch mechanism according to claim 1, characterized in that, The rotating assembly also includes: The bushing is fixedly installed on the boom, and its inner wall is embedded with an oilless lubricated bearing; the oilless lubricated bearing is clearance-fitted with the rotating shaft to realize the rotational support of the rotating shaft; The rotating support is C-shaped and is formed by bending upwards from the side of the winch mounting base; the two ends of the rotating support are fixedly connected to the two ends of the rotating shaft.

3. A rotary winch mechanism according to claim 1 or 2, characterized in that, The drive component is a hydraulic motor or an electric motor.

4. A rotary winch mechanism according to claim 1 or 2, characterized in that, The drive assembly is a horizontal telescopic cylinder or an electric telescopic rod.

5. A rotary winch mechanism according to claim 4, characterized in that, The bottom of the horizontal telescopic cylinder is hinged to the boom, and the end of its piston rod is hinged to the winch mounting base.

6. A rotary winch mechanism according to claim 4, characterized in that, The fixed end of the electric telescopic rod is hinged to the boom, and its extended end is hinged to the winch mounting base.

7. A rotary winch mechanism according to claim 5, characterized in that, The rotation axis is perpendicular to the length direction of the boom.

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