Pneumatic internal expansion type turnover lifting appliance

Abstract

The utility model discloses a pneumatic internal expansion type turnover lifting appliance. The device comprises a tensioning seat, two fixed inner supporting blocks, a telescopic inner supporting block, a pneumatic clamp, a suspension arm and an overturning air cylinder, the two fixed inner supporting blocks and the telescopic inner supporting block are arranged in the circumferential direction of the tensioning seat, the two fixed inner supporting blocks are fixedly connected with the tensioning seat, and the pneumatic clamp is arranged on the tensioning seat to drive the telescopic inner supporting block to stretch out and draw back. The fixed inner supporting block and the telescopic inner supporting block can be used for tightly supporting a stator, the bottom of the suspension arm is rotationally connected with the top of the tensioning base, the overturning air cylinder is arranged on the suspension arm, the telescopic end of the overturning air cylinder is rotationally connected with the tensioning base, and the overturning air cylinder drives the tensioning base to act and has at least a first position state and a second position state. In the first position state, the tensioning seat is horizontally placed relative to the suspension arm, and in the second position state, the tensioning seat is vertically placed relative to the suspension arm. According to the utility model, the pneumatic clamp tightly supports the stator and realizes self-locking, the stator is effectively prevented from falling off, and the overturning cylinder drives the tensioning seat to overturn relative to the suspension arm so as to overturn the stator by 90 degrees.

Description

Technical Field

[0001] The utility model relates to the technical field of motor stator hangers, in particular to a pneumatic internal expansion type turnover hanger. Background Art

[0002] After the motor stator is wound, assembled, welded, etc., the stator is lifted from the mold with KBK lifting equipment and a lifting device, and needs to be turned 90° and placed on the operating table. The coil cannot be damaged. The lifting device is required to avoid space restrictions and be able to turn 90°. At the same time, it can be used on the KBK lifting equipment. The internal support stator lifting device commonly used in the prior art is a stator inner circle expansion lifting device, including a lifting ring, a circular ring, a force arm tensioning block, a hinge, and auxiliary parts lining and rubber pads. The force arm tensioning block is fixed on the circular ring, and the force arm tensioning block is connected to the lifting ring through a hinge. The lifting ring is lifted to pull the force arm tensioning block, so that the three force arm tensioning blocks are opened to tighten the stator inner ring. After being placed horizontally, it needs to be manually turned 90°. Another example is Chinese patent CN201313783Y, which uses an internally supported stator hanger that applies external force to tighten. It consists of a rotating screw with a left thread at one end and a right thread at the other end (both are trapezoidal threads). By rotating the screw, the two screw sleeves move relative to each other, driving the support rod to press the inner ring of the stator. The lower end of the tooling will extend beyond the lower end of the stator and interfere with the mold, and it also needs to be manually flipped 90°. The above hangers cannot meet the requirements of quick clamping and loosening, use in limited space at the lower end of the stator, and flipping the stator. Utility Model Content

[0003] The utility model aims to provide a pneumatic inner expansion type overturning hoist which can overturn the stator during hoisting.

[0004] The purpose of the utility model is achieved in this way.

[0005] A pneumatic internal expansion type flip hoist comprises a tensioning seat, two fixed internal support blocks, a telescopic internal support block, a pneumatic clamp, a boom, and a flip cylinder. The two fixed internal support blocks and the telescopic internal support block are arranged along the circumference of the tensioning seat. The two fixed internal support blocks are respectively connected and fixed to the tensioning seat. The pneumatic clamp is arranged on the tensioning seat to drive the telescopic internal support block to extend and retract. The fixed internal support block and the telescopic internal support block can be used to tighten the stator. The bottom of the boom is rotatably connected to the top of the tensioning seat. The flip cylinder is arranged on the boom. The telescopic end of the flip cylinder is rotatably connected to the tensioning seat. The flip cylinder drives the tensioning seat to have at least a first position state and a second position state.

[0006] First position: the tensioning seat is placed horizontally relative to the boom.

[0007] Second position: the tensioning seat is placed vertically relative to the boom.

[0008] The above technical solution can be further improved as follows.

[0009] Furthermore, two U-shaped brackets are provided on the top surface of the tensioning seat, the boom is in a horizontal U-shape, a clearance notch is provided at the center of the bottom of the boom to form two arms, and the arms and the U-shaped brackets are rotatably connected by a retaining spring and a pin. The rotatable connection structure between the tensioning seat and the boom is simple and easy to implement.

[0010] Furthermore, the tensioning seat is in the first position, the inner ends of the pneumatic clamp and the telescopic inner support block are placed in the clearance gap, and the outer end of the telescopic inner support block extends out of the clearance gap. The boom avoids the position of the pneumatic clamp and the telescopic inner support block through the clearance gap, and the tensioning seat flipping structure is reasonable to avoid motion interference.

[0011] Furthermore, the tensioning seat is provided with guide pillars in the circumferential direction, the guide pillars and the two fixed inner support blocks are distributed at an angle of 120°, the telescopic inner support blocks are slidably sleeved on the guide pillars, and the telescopic rod of the pneumatic clamp is connected and fixed to the telescopic inner support blocks. The tensioning seat is easy to fix the stator.

[0012] Furthermore, a swivel bracket is provided on the top surface of the tensioning seat, and the telescopic end of the flip cylinder is rotatably connected to the swivel bracket.

[0013] Furthermore, a connecting block is provided at the telescopic end of the tilting cylinder, and the connecting block and the slewing bracket are rotatably connected through a connecting piece.

[0014] Furthermore, the slewing bracket is provided with a clearance hole corresponding to the pneumatic clamp, so that the structure is more compact, which is conducive to reducing the overall volume and is easy to put into the stator.

[0015] Furthermore, the boom is provided with a cylinder bracket, and the tilting cylinder and the cylinder bracket are rotatably connected. The tilting cylinder is easy to install.

[0016] Furthermore, a lifting ring is provided on the top of the boom, a handle is provided on the side of the boom, and four pneumatic control buttons are provided on the boom, which respectively control the tightening of the telescopic inner support block, the loosening of the telescopic inner support block, the flipping of the tensioning seat to the first position state, and the flipping of the tensioning seat to the second position state. The handle facilitates the movement of the pneumatic inner expansion flip spreader, and the pneumatic control buttons facilitate the user's operation.

[0017] Furthermore, the outer ends of the fixed inner support block and the telescopic inner support block are both provided with arc-shaped friction plates. The stator is firmly fixed.

[0018] The beneficial effects of the utility model are as follows.

[0019] The overall structure of the utility model is reasonably arranged and compact, and can be used when the space of the stator in the mold is limited. The pneumatic clamp holds the stator tightly and realizes self-locking, which effectively prevents the stator from loosening and falling off during lifting. The turning cylinder drives the tensioning seat to turn relative to the boom, so as to turn the stator 90°, meeting the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of embodiment 1.

[0021] Figure 2 It is a structural schematic diagram of the tensioning seat in the first embodiment.

[0022] Figure 3 It is a structural schematic diagram of the tensioning seat in the first position in the first embodiment.

[0023] Figure 4 This is a structural schematic diagram of the tensioning seat in the second position state in the first embodiment. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Example 1, see Figure 1-4 As shown, a pneumatic internal expansion type flip hoist comprises a tensioning seat 1, two fixed internal support blocks 11, a telescopic internal support block 12, a pneumatic clamp 2, a boom 3 and a flip cylinder 4.

[0026] Two fixed inner support blocks 11 and telescopic inner support blocks 12 are arranged along the circumference of the tensioning seat 1, and the two fixed inner support blocks 11 are respectively connected and fixed to the tensioning seat 1. The tensioning seat 1 is provided with guide columns 13 along the circumference, and the angle between the guide columns 13 and the two fixed inner support blocks 11 is 120°. The telescopic inner support block 12 is slidably sleeved on the guide columns 13, and the pneumatic clamp 2 is fixed on the top surface of the tensioning seat 1. The telescopic rod of the pneumatic clamp 2 is connected and fixed to the telescopic inner support block 12, and the telescopic rod of the pneumatic clamp 2 drives the telescopic inner support block 12 to telescope along the radial direction of the tensioning seat 1. Specifically, the cross section of the guide column 13 is rectangular. The outer ends of the fixed inner support block 11 and the telescopic inner support block 12 are both provided with arc-shaped friction plates 14.

[0027] Among them, two U-shaped brackets 5 are also provided on the top surface of the tensioning seat 1. The two U-shaped brackets 5 are symmetrically arranged with respect to the axis of the pneumatic clamp 2, the guide column 13 and the telescopic inner support block 12. The top surface of the U-shaped bracket 5 and the side facing the telescopic inner support block 12 are open. A swivel bracket 6 is provided on the top surface of the tensioning seat 1 near the telescopic inner support block 12. The swivel bracket 6 is provided with a clearance hole 61 corresponding to the pneumatic clamp 2, that is, the guide column 13 passes through the clearance hole 61.

[0028] The boom 3 is in a horizontal U-shape, with a clearance notch 30 provided at the center of the bottom of the boom 3 and two support arms 31 formed, and the clearance notch 30 extends upward to near the top of the boom 3. The support arm 31 and the U-shaped bracket 5 are rotatably connected by a retaining spring 7 and a pin 8. A cylinder bracket 32 ​​is provided at the top of the boom 3 corresponding to the clearance notch 30, and the flip cylinder 4 and the cylinder bracket 32 ​​are rotatably connected by a hinge. The flip cylinder 4 is placed in the clearance notch 30, and a connecting block 41 is provided at the telescopic end of the flip cylinder 4. The connecting block 41 and the slewing bracket 6 are rotatably connected by a connecting piece 42. Preferably, the connecting piece 42 is a bolt and a nut. A lifting ring 35 is provided on the top surface of the boom 3. Handles 33 are provided on the sides of the boom 3.

[0029] The turning cylinder 4 drives the tensioning seat 1 to move in a first position state and a second position state: the first position state: the tensioning seat 1 is placed horizontally relative to the boom 3, at this time, the pneumatic clamp 2 and the inner end of the telescopic inner support block 12 are placed in the clearance gap 30 at the bottom of the support arm 31, and the outer end of the telescopic inner support block 12 extends out of the clearance gap 30; the second position state: the tensioning seat 1 is placed vertically relative to the boom 3. Among them, the boom 3 is also provided with four pneumatic control buttons 34, and the four pneumatic control buttons 34 respectively control the telescopic inner support block 12 to tighten, the telescopic inner support block 12 to loosen, the tensioning seat 1 to flip to the first position state, and the tensioning seat 1 to flip to the second position state.

[0030] During the working process, the lifting equipment hooks the lifting ring 35 to suspend the pneumatic internal expansion type flip hoist. The pneumatic internal expansion type flip hoist is placed in the stator 9 by holding the handle 33, and the pneumatic control button 34 for tightening the telescopic inner support block 12 is pressed. The telescopic rod of the pneumatic clamp 2 pushes the telescopic inner support block 12 to move outward to tighten the stator 9 and self-lock, that is, the two fixed inner support blocks 11 and the telescopic inner support block 12 jointly tighten the stator 9. In this way, the pneumatic clamp 2 also maintains the tightening force on the stator 9 unchanged when the air is cut off, preventing the stator 9 from falling off and ensuring safety.

[0031] Secondly, the lifting equipment lifts the stator 9 through the pneumatic internal expansion flip hoist, presses the pneumatic control button 34 to flip the tensioning seat 1 to the second position, and the flipping cylinder 4 pushes the slewing bracket 6 to move downward to drive the tensioning seat to rotate 90° (that is, the downward flipping direction of the telescopic inner support block 12), thereby realizing the 90° flipping of the stator 9, and then placing the stator 9 on the operating table.

[0032] Then, the pneumatic control button 34 for releasing the telescopic inner support block 12 is pressed, and the telescopic rod of the pneumatic clamp 2 pushes the telescopic inner support block 12 to retract inward, and the pneumatic inner expansion type turnover hanger is separated from the stator 9.

[0033] Finally, the pneumatic control button 34 is pressed to flip the tensioning seat 1 to the first position. The flipping cylinder 4 pulls the slewing bracket 6 to move upward to drive the tensioning seat to rotate 90° (i.e., the telescopic inner support block 12 flips upward), thereby resetting the pneumatic inner expansion flip sling.

Claims

1. A pneumatic internal expansion type flip spreader, characterized in that: It includes a tensioning seat, two fixed inner support blocks, a telescopic inner support block, a pneumatic clamp, a boom and a flip cylinder. The two fixed inner support blocks and the telescopic inner support block are arranged along the circumference of the tensioning seat. The two fixed inner support blocks are respectively connected and fixed to the tensioning seat. The pneumatic clamp is arranged on the tensioning seat to drive the telescopic inner support block to extend and retract. The fixed inner support block and the telescopic inner support block can be used to tighten the stator. The bottom of the boom is rotatably connected to the top of the tensioning seat. The flip cylinder is arranged on the boom. The telescopic end of the flip cylinder is rotatably connected to the tensioning seat. The flip cylinder drives the tensioning seat to have at least a first position state and a second position state. First position: the tensioning seat is placed horizontally relative to the boom. Second position: the tensioning seat is placed vertically relative to the boom.

2. The pneumatic internal expansion type turnover hanger according to claim 1 is characterized in that: Two U-shaped brackets are arranged on the top surface of the tensioning seat, the boom is in a horizontal U-shape, a clearance gap is arranged at the center of the bottom of the boom to form two supporting arms, and the supporting arms and the U-shaped bracket are rotatably connected by a retaining spring and a pin shaft.

3. The pneumatic internal expansion type turnover hanger according to claim 2 is characterized in that: The tensioning seat is in the first position, the pneumatic clamp and the inner ends of the telescopic inner support block are placed in the clearance gap, and the outer end of the telescopic inner support block extends out of the clearance gap.

4. The pneumatic internal expansion type turnover hanger according to claim 1 is characterized in that: The tensioning seat is circumferentially provided with guide columns, and the angles between the guide columns and the two fixed inner support blocks are 120 degrees. The telescopic inner support blocks are slidably sleeved on the guide columns, and the telescopic rod of the pneumatic clamp is connected and fixed to the telescopic inner support blocks.

5. The pneumatic internal expansion type turnover hanger according to claim 4 is characterized in that: A swivel bracket is also provided on the top surface of the tensioning seat, and the telescopic end of the tilting cylinder is rotatably connected with the swivel bracket.

6. The pneumatic internal expansion type turnover hanger according to claim 5 is characterized in that: The telescopic end of the tilting cylinder is provided with a connecting block, and the connecting block and the slewing bracket are rotatably connected through a connecting piece.

7. The pneumatic internal expansion type turnover hanger according to claim 4 is characterized in that: The swivel bracket is provided with a clearance hole corresponding to the pneumatic clamp.

8. The pneumatic internal expansion type turnover hanger according to claim 1 is characterized in that: The boom is provided with a cylinder bracket, and the tilting cylinder and the cylinder bracket are rotatably connected.

9. The pneumatic internal expansion type turnover hanger according to claim 1 is characterized in that: A lifting ring is provided on the top of the boom, a handle is provided on the side of the boom, and the boom is also provided with four pneumatic control buttons, which respectively control the tightening of the telescopic inner support block, the loosening of the telescopic inner support block, the flipping of the tensioning seat to the first position state, and the flipping of the tensioning seat to the second position state.

10. The pneumatic internal expansion type turnover hanger according to claim 1, characterized in that: The outer ends of the fixed inner support block and the telescopic inner support block are both provided with arc-shaped friction plates.

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