Bent beam turnover lifting appliance and special-shaped part turnover lifting method

Abstract

The invention discloses a camber beam turnover lifting appliance and a special-shaped part turnover lifting method, and belongs to the technical field of mechanical lifting. Comprising a camber beam; the camber beam is of a long-arc-shaped structure, one end of the long-arc-shaped upper surface of the camber beam is a front lifting point, and the other end of the long-arc-shaped upper surface of the camber beam is a rear lifting point. The front lifting point is lower than the rear lifting point; the long arc-shaped lower surface is provided with a front connecting point, and the end part of the long arc-shaped lower surface is provided with a rear connecting point; the front connecting point is located between the front lifting point and the rear lifting point in the horizontal direction, and the rear lifting point is located above the rear connecting point; the lifting appliance can realize the turnover of the special-shaped structural part from the horizontal direction to the vertical direction, so that the requirement of a turnover function is met; the connecting plate and the connecting screw are designed by decomposing the space angle of the connecting screw hole, so that the space connecting requirement is met; the device is suitable for overturning and hoisting large special-shaped parts.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical hoisting, and relates to a bent beam turnover hoist and a method for turnover hoisting of special-shaped parts. Background Art

[0002] A flip sling is a device that uses a mechanical mechanism or a hydraulic mechanism to flip an object, and is used for lifting and flipping the object. The working principle of the flip sling mainly depends on its flip mechanism. Usually, the flip sling consists of a hook part, a bracket part, a sling part and a flip mechanism. When working, first connect the hook to the sling through the bracket part, and then connect the object to the sling through the hook part. Then start the flip mechanism to flip the object. When the object drops to the desired position, stop the flip mechanism to keep the object stable. Finally, if you need to return the object to its original position, you can reverse it through the flip mechanism. The flip mechanism can achieve rapid flipping of the object, greatly improving work efficiency.

[0003] However, conventional flip slings are usually suitable for the lifting and flipping of conventional structural symmetrical objects, but there are many problems in the operation of lifting and flipping special-shaped structural parts; the existing large special-shaped parts usually have a longitudinal span of 5000mm, a lateral span of 900mm, and a lifting load of 5t. However, the existing flip slings do not have the function of horizontal flipping and vertical flipping for such large special-shaped parts, nor do they have the function of flipping from vertical to horizontal; because the hoisted object is a special-shaped structural part, the connection point is the threaded holes arranged at four spatial angles on the upper part, and the existing flip slings do not have the function of connecting the threaded holes at spatial angles. At present, the existing slings cannot meet the requirements for lifting and flipping special-shaped parts. Summary of the invention

[0004] The present invention overcomes the shortcomings of the prior art and proposes a bending beam flip hoist and a method for flipping and hoisting special-shaped parts to solve the above technical problems. The present invention is achieved through the following technical solutions: A curved beam flip hanger, comprising a curved beam; the curved beam is a long arc structure, one end of the long arc upper surface of the curved beam is a front hanging point, and the other end of the long arc upper surface is a rear hanging point; the front hanging point is lower than the rear hanging point; the long arc lower surface is provided with a front connecting point, and the end of the long arc lower surface is provided with a rear connecting point; the front connecting point is located between the front hanging point and the rear hanging point in the horizontal direction, and the rear hanging point is located above the rear connecting point; The front connection point includes a connection plate, a front connection screw, a tightening bolt and a big head bolt; the connection plates are symmetrically connected on both sides of the curved beam; the connection plates are connected with the tightening bolts and the big head bolts; when connecting with the special-shaped part, the two front connection screws are symmetrically screwed into the top of the special-shaped part, and then the big head bolt is connected with the front connection screw, and then the tightening bolt is tightened to fix the big head bolt; The rear connection point includes a rear connection screw; an arc-shaped connecting frame is fixed at the other end of the curved beam, the width and inner curvature of the arc-shaped connecting frame are adapted to the special-shaped part, the connecting frame is located above the special-shaped part, and the upper parts of both ends of the connecting frame are also connected with big-head bolts, and the sides of both ends of the connecting frame are connected with tightening bolts; when connecting with the special-shaped part, the two rear connection screws are symmetrically screwed into the two sides of the end of the special-shaped part, and then the big-head bolts on the connecting frame are connected with the rear connection screws, and then the tightening bolts here are tightened to fix the big-head bolts.

[0005] Furthermore, the connecting plate is an L-shaped structure, the upper part of the connecting plate is connected to the side wall of the curved beam by bolts, and the top of the lower part of the connecting plate is connected with a big-head bolt.

[0006] Furthermore, three sides of the lower half of the connecting plate are connected with tightening bolts.

[0007] Furthermore, the front suspension point includes a short suspension strap, which is connected to the curved beam via a connecting piece.

[0008] Furthermore, the connecting member includes a connecting rod and a first shackle; the bottom of the connecting rod is rotatably connected to the curved beam, the top of the connecting rod is connected to the first shackle, and the first shackle is connected to the short sling.

[0009] Furthermore, the connecting rod is rotatably connected to the curved beam via a pin shaft; a connecting hole is provided at one end of the curved beam, and the pin shaft passes through the connecting hole and is rotatably connected to the curved beam via a cotter pin and a washer; the bottom end of the connecting rod is fixedly connected to the pin shaft.

[0010] Furthermore, the rear suspension point includes a long suspension belt; the long suspension belt is connected to the curved beam.

[0011] Furthermore, a second shackle is connected to the upper part of the curved beam, and the long sling is connected to the second shackle.

[0012] Furthermore, the overall length of the curved beam is greater than the length of the special-shaped member.

[0013] A method for turning over and hoisting a special-shaped part, using the above-mentioned bending beam turning over hoist, comprises the following steps: 1) When the special-shaped part is in a horizontal state, first screw the front connecting screw and the rear connecting screw into the front lifting bolt mounting hole and the rear lifting bolt mounting hole on the special-shaped part respectively and tighten them, then drop the curved beam and make it close to the contact, align the front and rear lifting holes respectively, tighten the big head bolts with the front connecting screw and the rear connecting screw respectively, and complete the connection between the sling and the special-shaped part; 2) The front and rear cranes are connected to the front and rear lifting points on the curved beam respectively, and lift to a certain height at the same time to ensure that there is enough space for turning. The rear crane stops lifting and the front crane continues lifting until the special-shaped part is turned into a vertical state. At this time, the distance between the front and rear cranes is adjusted appropriately; 3) Remove the big head bolts, lift the bent beam with the rear crane diagonally to separate the bent beam from the special-shaped part, and move the front and rear cranes to one side synchronously to keep the bent beam away from the special-shaped part; 4) Remove the front and rear connecting screws on the special-shaped parts.

[0014] The beneficial effects of the present invention compared with the prior art are as follows: The sling adopts a curved beam structure with a compact space structure and lightweight design. The upper sling is directly hung in the crane hook, which is simple and convenient to operate. The sling can realize the horizontal to vertical flipping of special-shaped structural parts to meet the flip function requirements. By decomposing the spatial angle of the connecting screw hole, the connecting plate and connecting screws are designed to meet the spatial connection requirements. When the object is in a vertical state, the front lifting point and the combined center of mass of the object and the sling coincide in the vertical direction.

[0015] The design of this curved beam flip sling provides a new idea for the modular and universal design of flip slings in the future, and has great application prospects in the production of military and civilian products in our factory. By expanding additional functions, it can also meet the lifting needs of different products and can be used as a reference for the structural design of flip slings when other models of products have lifting requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of horizontal lifting of the bent beam flip hoist of the present invention; Figure 2 This is a schematic diagram of the lifting state of the bending beam tilting hoist of the present invention when it is tilted 45°; Figure 3 This is a schematic diagram of the lifting state of the bending beam tilting hoist of the present invention being tilted 90°; Figure 4 It is a schematic diagram of the structure of the front connection point of the bending beam turning hanger of the present invention; Figure 5 is a cross-sectional view of the front connection point of the bending beam turning hanger of the present invention; Figure 6 It is a schematic diagram of the structure of the rear connection point of the bending beam flip hanger of the present invention; Figure 7 is a cross-sectional view of the rear connection point of the bending beam turning hanger of the present invention; Figure 8 This is a structural diagram of the front lifting point of the bending beam turning lifting device of the present invention; Fig. 9 This is a structural diagram of the rear lifting point of the bending beam flipping sling of the present invention; In the above picture: 1-long sling; 2-short sling; 3-first shackle; 4-pin shaft; 5-connecting rod; 6-connecting plate; 7-front connecting screw; 8-rear connecting screw; 9-big head bolt; 10-bent beam; 11-second shackle; 12-tightening bolt; 13-special-shaped part; 14-connecting frame. DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail in conjunction with the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. The technical solutions of the present invention are described in detail below in conjunction with the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0018] See also Figures 1 to 9 The present embodiment proposes a bent beam flip hoist and a method for flipping and hoisting special-shaped parts. The flip hoist is mainly composed of a bent beam 10, a long sling 1, a short sling 2, a pin 4, a connecting rod 5, a connecting plate 6, a front connecting screw 7, a rear connecting screw 8, a big head bolt 9, etc.

[0019] The curved beam 10 is a long arc structure, one end of the long arc upper surface of the curved beam 10 is the front hanging point, and the other end of the long arc upper surface is the rear hanging point; the front hanging point is slightly lower than the rear hanging point; the inner side of one end of the long arc lower surface is the front connection point, and the other end of the long arc lower surface is the rear connection point; the front connection point is located between the front hanging point and the rear hanging point in the horizontal direction, and the rear hanging point is located above the rear connection point. The overall length of the curved beam 10 is greater than the length of the special-shaped part.

[0020] Among them, the front lifting point includes a connecting rod 5, a first shackle 3, a short sling 2, and a pin 4; a connecting hole is provided at one end of the curved beam 10, and the pin 4 passes through the connecting hole and is rotatably connected to the curved beam 10 through a cotter pin and a washer; the bottom end of the connecting rod 5 is fixedly connected to the pin 4, the top end of the connecting rod 5 is connected to the first shackle 3, and the short sling 2 is connected to the first shackle 3.

[0021] The rear lifting point comprises a second shackle 11 , which is connected to the upper portion of the other end of the curved beam 10 , and the long lifting belt 1 is connected to the second shackle 11 .

[0022] The front connection point includes a connecting plate 6, a front connecting screw 7, a tightening bolt 12 and a big-head bolt 9; the connecting plates 6 are symmetrically connected to the two sides of the curved beam 10; the connecting plate 6 is an L-shaped structure, the upper half of the connecting plate 6 is connected to the side wall of the curved beam 10 by bolts, the top of the lower half of the connecting plate 6 is connected to the big-head bolt 9, and the three sides of the lower half of the connecting plate 6 are connected to the tightening bolts 12; when connecting with the special-shaped part 13, first screw the two front connecting screws 7 symmetrically into the top of the special-shaped part 13, then connect the big-head bolt 9 with the front connecting screw 7, and then tighten the tightening bolt 12 to fix the big-head bolt 9.

[0023] The rear connection point includes a rear connection screw 8; an arc-shaped connecting frame 14 is fixed at the other end of the curved beam 10, and the width and inner curvature of the arc-shaped connecting frame 14 are adapted to the special-shaped member 13. The connecting frame 14 is located above the special-shaped member 13, and the upper parts of both ends of the connecting frame 14 are also connected with big-head bolts 9, and the sides of both ends of the connecting frame 14 are also connected with tightening bolts 12; when connecting with the special-shaped member 13, first screw the two rear connection screws 8 symmetrically into the two sides of the end of the special-shaped member 13, and then connect the big-head bolts 9 on the connecting frame 14 with the rear connection screws 8, and then tighten the tightening bolts 12 here to fix the big-head bolts 9.

[0024] The specific method of using the bent beam flip hanger proposed in this embodiment is as follows: When the special-shaped part 13 is in a horizontal state, first screw the front connecting screw 7 and the rear connecting screw 8 into the front lifting bolt installation hole and the rear lifting bolt installation hole on the special-shaped part 13 and tighten them, then slowly drop the curved beam 10 and slowly approach it to make the front and rear lifting holes aligned, respectively, and tighten the big head bolt 9 with the front connecting screw 7 and the rear connecting screw 8, respectively, to complete the connection between the sling and the object being hoisted. The vertical state connection is similar to the horizontal state connection, and the sling disassembly process is the reverse process of the installation process.

[0025] During installation, the rear connecting hole of the bent beam should be in close contact with the rear surface of the largest diameter part of the big-head bolt 9. If it cannot be close, it should be filled with a gasket to ensure that the rear lifting point of the suspended object can be stressed in the vertical lifting state. Then, the front big-head bolt 9 should be pushed in with the tightening bolt 12 to ensure that the front lifting point of the suspended object can be stressed in the vertical lifting state.

[0026] The front lifting point of the curved beam 10 is connected to the connecting rod 5 through a pin 4, a washer, and a cotter pin. The connecting rod 5 is connected to the short sling 2 through a 12-ton first shackle 3. The rear lifting point of the curved beam 10 is connected to the long sling 1 through a 12-ton second shackle 11. The front short sling 2 is R01-08 L=5 meters, and the rear long sling 11 is R01-08 L=15 meters.

[0027] Hoisting process 1. Place the special-shaped member 13 horizontally, and connect and tighten the front connecting screws 7 and the rear connecting screws 8 to the front hanging point and the rear hanging point of the special-shaped member 13 respectively.

[0028] 2. Assemble the lifting device according to the drawing, lift the lifting device horizontally with double hooks of double vehicles, move it slowly, dock it with the lifting point of special-shaped part 13, install the big head bolt 9 and tighten it.

[0029] 3. The front and rear cranes are lifted to a certain height at the same time to ensure that there is enough space for turning over. The rear crane stops lifting and the front crane continues lifting until the special-shaped part 13 is turned over to a vertical state. At this time, the distance between the front and rear cranes is appropriately adjusted.

[0030] 4. Remove the big-head bolt 9, and use the rear crane to lift the bent beam 10 diagonally to separate the bent beam 10 from the special-shaped part 13. The front and rear cranes move to one side synchronously to keep the bent beam 10 away from the special-shaped part 13.

[0031] 5. Remove the front connecting screw 7 and the rear connecting screw 8 on the special-shaped part 13.

[0032] The vertical to horizontal flipping process is the reverse process of the horizontal to vertical flipping process.

[0033] A bent beam flip hoist proposed in this embodiment has the function of horizontal flipping and vertical flipping: the object to be hung is placed horizontally, and after being connected to the hoist, it is lifted by a double-car double-hook, and the front and rear lifting points are lifted at the same time. After lifting to an appropriate height in the air, the front lifting point rises and the rear lifting point remains stationary to flip. When the front lifting point bears all the weight, the front lifting point coincides with the combined center of mass of the object to be hung and the hoist in the vertical direction, and the object to be hung remains in a vertical state, completing the horizontal to vertical flipping.

[0034] The suspended object is a special-shaped structural part, and the connection points are threaded holes arranged at four spatial angles on the upper part. By decomposing the spatial angles twice, the adapter plate and connecting screws are designed to meet the needs of spatial connection.

[0035] The above content is a further detailed description of the present invention in combination with a specific preferred embodiment. It cannot be determined that the specific embodiments of the present invention are limited to this. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the present invention, which should be regarded as belonging to the present invention and the scope of patent protection determined by the submitted claims.

Claims

1. A curved beam turning hanger, characterized in that: The curved beam (10) comprises a curved beam (10); the curved beam (10) is a long arc-shaped structure; one end of the long arc-shaped upper surface of the curved beam (10) is a front hanging point, and the other end of the long arc-shaped upper surface is a rear hanging point; the front hanging point is lower than the rear hanging point; the long arc-shaped lower surface is provided with a front connection point, and the end of the long arc-shaped lower surface is provided with a rear connection point; the front connection point is located between the front hanging point and the rear hanging point in the horizontal direction, and the rear hanging point is located above the rear connection point; The front connection point includes a connection plate (6), a front connection screw (7), a tightening bolt and a big head bolt; the connection plates (6) are symmetrically connected to both sides of the curved beam (10); the connection plates (6) are connected to the tightening bolts and the big head bolts; when connected to the special-shaped member (13), the two front connection screws (7) are symmetrically screwed into the top of the special-shaped member (13), and then the big head bolt is connected to the front connection screw (7), and then the tightening bolt is tightened to fix the big head bolt; The rear connection point includes a rear connection screw (8); an arc-shaped connection frame (14) is fixed at the other end of the curved beam (10); the width and inner curvature of the arc-shaped connection frame (14) are adapted to the special-shaped member (13); the connection frame (14) is located above the special-shaped member (13); the upper parts of both ends of the connection frame (14) are also connected with big head bolts; the side parts of both ends of the connection frame (14) are connected with tightening bolts; when connecting with the special-shaped member (13), the two rear connection screws (8) are symmetrically screwed into the two sides of the end of the special-shaped member (13), and then the big head bolts on the connection frame (14) are connected with the rear connection screws (8), and then the tightening bolts here are tightened to fix the big head bolts.

2. A bending beam turning hanger according to claim 1, characterized in that: The connecting plate (6) is an L-shaped structure. The upper part of the connecting plate (6) is connected to the side wall of the curved beam (10) by means of bolts, and the top of the lower part of the connecting plate (6) is connected with a large head bolt.

3. A bending beam turning hanger according to claim 2, characterized in that: The three sides of the lower half of the connecting plate (6) are all connected with tightening bolts.

4. The bending beam turning hanger according to claim 1, characterized in that: The front suspension point comprises a short suspension belt (2), and the short suspension belt (2) is connected to the curved beam (10) via a connecting piece.

5. The bending beam turning hanger according to claim 4, characterized in that: The connecting member comprises a connecting rod (5) and a first shackle (3); the bottom of the connecting rod (5) is rotatably connected to the curved beam (10), the top of the connecting rod (5) is connected to the first shackle (3), and the first shackle (3) is connected to the short sling (2).

6. The bending beam turning hanger according to claim 5, characterized in that: The connecting rod (5) is rotatably connected to the curved beam (10) via a pin shaft (4); a connecting hole is provided at one end of the curved beam (10); the pin shaft (4) passes through the connecting hole and is rotatably connected to the curved beam (10) via a cotter pin and a washer; the bottom end of the connecting rod (5) is fixedly connected to the pin shaft (4).

7. The bending beam turning hanger according to claim 1, characterized in that: The rear suspension point comprises a long suspension belt (1); the long suspension belt (1) is connected to the curved beam (10).

8. The bending beam turning hanger according to claim 7, characterized in that: The upper part of the curved beam (10) is connected to a second shackle (11), and the long sling (1) is connected to the second shackle (11).

9. The bending beam turning hanger according to claim 1, characterized in that: The overall length of the curved beam (10) is greater than the length of the special-shaped member.

10. A method for flipping and hoisting special-shaped parts, characterized in that: Using the bent beam flip hanger as claimed in claim 1, the steps include: 1) When the special-shaped member (13) is in a horizontal state, firstly, the front connecting screw (7) and the rear connecting screw (8) are screwed into the front lifting bolt mounting hole and the rear lifting bolt mounting hole on the special-shaped member (13) respectively and tightened, then the bent beam (10) is dropped down and brought into contact with each other so that the front and rear lifting holes are aligned respectively, and the big head bolts are tightened with the front connecting screw (7) and the rear connecting screw (8) respectively, so as to complete the connection between the sling and the special-shaped member (13); 2) The front and rear cranes are respectively connected to the front and rear lifting points on the curved beam (10), and are simultaneously lifted to a certain height to ensure that there is sufficient space for turning over. The rear crane stops lifting, and the front crane continues lifting until the special-shaped part (13) is turned over to a vertical state. At this time, the distance between the front and rear cranes is appropriately adjusted; 3) The big-head bolts are removed, and the rear crane lifts the bent beam (10) obliquely to separate the bent beam (10) from the special-shaped part (13), and the front and rear cranes move to one side synchronously to keep the bent beam (10) away from the special-shaped part (13); 4) Remove the front connecting screw (7) and the rear connecting screw (8) on the special-shaped part (13).

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