Adjustable hanging point sling and hoisting method

Abstract

This invention discloses an adjustable suspension point lifting device and lifting method. The adjustable suspension point lifting device includes a crossbeam, bushing, long plate, shaft, lifting ring, retaining ring, support shaft, bearing retaining ring, roller assembly, clamp, clamping block, screw, adapter plate, rocker arm, connecting plate, connecting pin, movable lifting rod, pin, and bearing. The lifting ring can slide on the crossbeam through the roller assembly to achieve horizontal displacement relative to the movable lifting rod. Before lifting, rotating the rocker arm drives the lifting ring to move relative to the movable lifting rod, thereby moving the lifting ring to the center of gravity of the part and achieving lifting balance. This invention can be used for lifting parts whose lifting point is not at the center of gravity of the part being lifted, and the adjustment is convenient and quick, improving lifting efficiency.

Description

Technical Field

[0001] This invention belongs to the field of aero-engine manufacturing technology, specifically relating to a lifting device and lifting method for an adjustable mounting point of an afterburner cylinder and a converging / diverging nozzle unit. Background Technology

[0002] The lifting points and center of gravity of the afterburner cylinder and diverging nozzle unit of an aero-engine are not on the same cross-section, causing the parts to tilt when lifted directly through the lifting points. Since the lifting points on the parts cannot be changed, adjustments can only be made to the lifting equipment.

[0003] like Figure 1 As shown, the existing solution involves drilling a row of evenly distributed holes in the spreader beam, and balancing the spreader by installing lifting rings in the holes at different positions. However, this method is inconvenient and requires multiple adjustments to the lifting ring positions. Summary of the Invention

[0004] In view of the problems described in the background art, the present invention aims to provide an adjustable hanging point lifting device and lifting method, which can be used for lifting parts whose lifting point is not at the center of gravity of the lifted part, and the adjustment is convenient and quick, thereby improving the lifting efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An adjustable hanging point hoist, comprising:

[0007] A crossbeam, on which a guide rail is mounted;

[0008] The first ends of the two adapter plates are respectively installed at both ends of the crossbeam along its length.

[0009] A connecting plate is disposed below the crossbeam, and both ends of the connecting plate are respectively connected to the second ends of two adapter plates;

[0010] A screw rod is disposed between the crossbeam and the connecting plate, and both ends of the screw rod are rotatably connected to two adapter plates respectively;

[0011] Two long plates are respectively set on both sides of the crossbeam in the width direction;

[0012] The card holder and the card block are provided. The card holder is located between two long plates and below the crossbeam. The two sides of the card holder are respectively connected to the two long plates. The card block is placed inside the card holder. The card block has a threaded hole and a screw is threadedly connected to the card block through the threaded hole.

[0013] Roller assembly, multiple roller assemblies are disposed between two long plates, and the rotating shaft of the roller assembly is fixed on the long plate. The rollers of the roller assembly roll in cooperation with the guide rail on the crossbeam. Multiple roller assemblies are symmetrically arranged about the crossbeam on both sides of the crossbeam in the width direction.

[0014] A shaft and a lifting ring are disposed between two long plates and above a crossbeam, wherein the shaft passes through the two long plates and the lifting ring is mounted on the shaft;

[0015] A rocker arm, which is connected to one end of a screw;

[0016] The movable rods have their first ends connected to the connecting plate via connecting pins, and the two movable rods are located on opposite sides of the crossbeam in the width direction. The second ends of the movable rods are fitted with pins.

[0017] Alternatively, the crossbeam may be an I-beam.

[0018] Alternatively, the rollers of the roller assembly are connected to the shaft via rolling bearings, and the surface of the rollers is conical, allowing the rollers to roll into contact with the crossbeam through the conical surface.

[0019] Furthermore, the adjustable hanging point lifting device also includes bushings and retaining rings. The two bushings are respectively fixed on two long plates. The two ends of the shaft pass through the bushings and then through the two long plates. The two retaining rings are installed on the shaft, and the lifting ring is installed on the shaft and between the two retaining rings.

[0020] Furthermore, the adjustable hanging point lifting device also includes a support shaft, a bearing retaining ring, and a bearing. The support shaft, bearing retaining ring, and bearing are arranged between two long plates and between the crossbeam and the shaft. The two ends of the support shaft are respectively installed on the two long plates, and two bearings are also installed on the support shaft. The two bearings are separated by a bearing retaining ring.

[0021] An adjustable hanging point hoisting method, using the aforementioned adjustable hanging point lifting device, includes: before hoisting, driving the lifting ring relative to the movable lifting rod by rotating the rocker arm to generate displacement, thereby moving the lifting ring to the center of gravity of the part to achieve hoisting balance.

[0022] Compared to existing technologies, this invention incorporates multiple roller assemblies in the lifting device. The rollers engage with the crossbeam, and the rocker arm rotates the screw, allowing the lifting ring to be adjusted horizontally. This simplifies operation and protects the screw from deformation. When the lifting point is not at the center of gravity of the part being lifted, and the part still needs to be lifted, the balance during the lifting process can be quickly achieved, solving the problem of inconvenient operation of existing lifting devices. During use, the operator only needs to apply minimal force to achieve rapid adjustment, making operation convenient. Compared to traditional lifting devices, it saves a significant amount of time spent repeatedly adjusting the lifting ring's position. The adjustment accuracy, safety, and efficiency of this invention are all superior to traditional lifting devices. Attached Figure Description

[0023] Figure 1 This is the front view of a traditional lifting device;

[0024] Figure 2This is a front view of the adjustable hanging point hoist of the present invention;

[0025] Figure 3 This is a left view of the adjustable hanging point suspension device of the present invention;

[0026] Figure 4 This is a front view of the roller assembly in the adjustable hanging point lifting device of the present invention;

[0027] In the diagram, 1-crossbeam; 2-shoulder sleeve; 3-long plate; 4-shaft; 5-lifting ring; 6-retaining ring; 7-support shaft; 8-bearing retaining ring; 9-roller assembly; 91-conical surface; 92-rolling bearing; 10-clip seat; 11-clamping block; 12-screw; 13-adapter plate; 14-rocker arm; 15-connecting plate; 16-connecting pin; 17-movable lifting rod; 18-pin; 19-bearing; 20-limiting plane. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. However, it should not be construed that the scope of the subject matter of the present invention is limited to the following embodiments. All modifications, substitutions and alterations made based on ordinary technical knowledge and common practices in the art without departing from the above-described technical concept of the present invention are included within the scope of the present invention.

[0029] like Figures 2-4 As shown, the adjustable hanging point lifting device of the present invention includes a crossbeam 1, a bushing 2, a long plate 3, a shaft 4, a lifting ring 5, a retaining ring 6, a support shaft 7, a bearing retaining ring 8, a roller assembly 9, a card seat 10, a card block 11, a screw 12, a transition plate 13, a rocker arm 14, a connecting plate 15, a connecting pin 16, a movable lifting rod 17, a pin 18, and a bearing 19.

[0030] The system consists of an adapter plate 13 mounted on the crossbeam 1, a connecting plate 15 fixed between two adapter plates 13, a screw 12 fixed at both ends to the two adapter plates 13 and passing through threaded holes in a locking block 11, a locking block 11 placed in a locking seat 10 mounted on the long plates 3 on both sides of the crossbeam 1, and four roller assemblies 9 mounted in pairs on the long plates 3. The bushing 2, shaft 4, lifting ring 5, retaining ring 6, support shaft 7, bearing retaining ring 8, and bearing 19 are symmetrically installed between the two long plates 3. A rocker arm 14 is mounted on the exposed end of the screw 12, the connecting plate 15 is mounted between the adapter plates 13 on the other two sides of the crossbeam 1, a connecting pin 16 is installed in the holes at both ends of the connecting plate 15, the movable lifting rod 17 is fixed to the connecting pin 16, and the lifting device and parts are connected with pins 18.

[0031] The structural features of the adjustable hanging point suspension device in this invention are as follows:

[0032] (1) A roller assembly 9 is designed. The rollers of the roller assembly 9 are provided with a conical surface 91, which can engage with the crossbeam 1 to transmit gravity and adjust the horizontal position of the lifting ring. A rolling bearing 92 is also installed on the roller to reduce friction when the roller rotates. As one option, the roller assembly 9 includes four rollers, which are symmetrically arranged on both sides of the crossbeam 1, so that the long plate 3 can slide on the track along the upper edge of the crossbeam 1 through the four rollers.

[0033] (2) A support shaft 7 is designed, on which a bearing 19 is installed. On the one hand, it is used to support the weight of the long plate 3, shaft 4, lifting ring 5, retaining ring 6, support shaft 7, bearing retaining ring 8, roller assembly 9, and clamp 10 of the screw 12 when the lifting device is not in use or in storage, so as to prevent the screw 12 from being deformed by force and having difficulty rotating. On the other hand, it can cooperate with the roller assembly 9 to form two sets of rolling devices on the upper and lower edges of the crossbeam 1.

[0034] (3) The design includes a locking block 11 and a locking seat 10. The locking block 11 is a cube with a threaded through hole at its center. The locking seat 10 is a cube structure with open front and rear ends, consisting of four plates. The upper and lower end faces of the locking seat 10 each have a through hole. The locking block 11 is inserted into the two through holes, and the locking block 11 and the through hole of the locking seat 10 are in a large clearance fit, so that the screw 12 is not stressed when the lifting device is not in use or in storage (the locking block 11 can move the screw 12 up and down relative to the locking seat 10, avoiding the force from being transmitted to the screw 12 through the locking seat 10 and the locking block 11), thus preventing the screw 12 from being deformed by stress.

[0035] (4) A connecting pin 16 is designed. The upper end of the connecting pin 16 is fixed to the connecting plate 15 by a nut, and the lower end is provided with a limiting plane 20. The two mutually parallel limiting planes 20 form a structure that limits the rotation direction of the movable rod 17. After being inserted into the slot at one end of the movable rod 17, it is connected by a pin and a pin to limit the rotation direction, so that the movable rod 17 is restricted to rotate in a plane perpendicular to the crossbeam 1 or the screw 12.

[0036] (5) The design includes two movable lifting rods 17, which are rigid bodies to ensure that the parts do not shift during the hoisting process.

[0037] Before lifting, the screw 12 is driven to rotate by rotating the rocker arm 14. The screw 12 and the locking block 11 drive the locking seat 10, the long plate 3, the shaft 4 and the lifting ring 5 to slide left and right on the crossbeam 1. This causes the lifting ring 5 to move horizontally relative to the plane where the two movable lifting rods 17 are located, thereby moving the lifting ring 5 to the center of gravity of the part to achieve lifting balance. Then the lifting device is connected to the lifting equipment, the movable lifting rods 17 are fixed to the lifting points on the part, and finally the part is lifted.

[0038] Contents not described in detail in this specification are prior art known to those skilled in the art. Although illustrative specific embodiments of the invention have been described above to facilitate understanding by those skilled in the art, it should be understood that the invention is not limited to the scope of the specific embodiments. Various modifications are readily apparent to those skilled in the art as long as they fall within the spirit and scope of the invention as defined and determined by the appended claims, and all inventions utilizing the concept of this invention are protected.

Claims

1. An adjustable hanging point lifting device, characterized in that, include: A crossbeam (1) having a guide rail on it; The first ends of the two adapter plates (13) are respectively installed at both ends of the crossbeam (1) in the length direction; A connecting plate (15) is provided below the crossbeam (1), and both ends of the connecting plate (15) are respectively connected to the second ends of the two adapter plates (13); Screw (12), the screw (12) is disposed between the crossbeam (1) and the connecting plate (15), and the two ends of the screw (12) are rotatably connected to two adapter plates (13); Long plate (3), the two long plates (3) are respectively set on both sides of the width direction of the crossbeam (1); Card holder (10) and card block (11), the card holder (10) is located between two long plates (3) and below the crossbeam (1), the two sides of the card holder (10) are respectively connected to the two long plates (3), the card block (11) is placed inside the card holder (10), the card block (11) has a threaded hole, and the screw (12) is threadedly connected to the card block (11) through the threaded hole; Roller assembly (9), multiple roller assemblies (9) are arranged between two long plates (3), and the rotating shaft of the roller assembly (9) is fixed on the long plate (3). The rollers of the roller assembly (9) roll in cooperation with the guide rail on the crossbeam (1). Multiple roller assemblies (9) are symmetrically arranged about the crossbeam (1) on both sides of the width direction of the crossbeam (1). A shaft (4) and a lifting ring (5) are arranged between two long plates (3) and above a crossbeam (1), wherein the shaft (4) passes through the two long plates (3) and the lifting ring (5) is installed on the shaft (4); A rocker arm (14) is connected to one end of a screw (12); Movable rods (17), the first ends of the two movable rods (17) are connected to the connecting plate (15) via connecting pins (16), and the two movable rods (17) are located on both sides of the width direction of the crossbeam (1), and the second ends of the movable rods (17) are equipped with pins (18).

2. The adjustable hanging point lifting device according to claim 1, characterized in that: The crossbeam (1) is an I-beam.

3. The adjustable hanging point lifting device according to claim 1, characterized in that: The rollers of the roller assembly (9) are connected to the shaft via rolling bearings (92), and the surface of the rollers is a conical surface (91). The rollers make rolling contact with the crossbeam (1) through the conical surface.

4. The adjustable hanging point lifting device according to claim 1, characterized in that: It also includes bushings (2) and retaining rings (6). The two bushings (2) are fixed on two long plates (3) respectively. The two ends of the shaft (4) pass through the bushings (2) and then through the two long plates (3). The two retaining rings (6) are installed on the shaft (4). The lifting ring (5) is installed on the shaft (4) and between the two retaining rings (6).

5. The adjustable hanging point lifting device according to claim 1, characterized in that: It also includes a support shaft (7), a bearing retainer (8) and a bearing (19). The support shaft (7), the bearing retainer (8) and the bearing (19) are arranged between two long plates (3) and between the crossbeam (1) and the shaft (4). The two ends of the support shaft (7) are respectively installed on the two long plates (3). Two bearings (19) are also installed on the support shaft (7). The two bearings (19) are separated by the bearing retainer (8).

6. A method for adjustable hanging points for hoisting, characterized in that, The adjustable hanging point lifting device according to claim 1 is used, and includes: before lifting, driving the lifting ring (5) to generate displacement relative to the movable lifting rod (17) by rotating the rocker arm (14), thereby moving the lifting ring (5) to the center of mass of the part to achieve lifting balance.

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