Detachable hoisting system of screw conveyer

Abstract

The utility model relates to a detachable hoisting system of a screw conveyor, which is used for hoisting and assembling the screw conveyor, and comprises a hoisting tool, a lifting hook controlled by a travelling crane and a connecting rope, the hoisting tool is detachably arranged on the screw conveyor to complete lossless installation of the hoisting tool, and the hoisting tool comprises an upper retaining ring, a lower retaining ring and a main lifting lug, the upper retaining ring and the lower retaining ring are connected through bolts and then arranged outside the screw machine in a sleeving mode, the main lifting lug is detachably arranged on the upper retaining ring, replacement of the main lifting lug is facilitated, the upper retaining ring and the lower retaining ring are provided with the locking bolts used for abutting against the screw machine, and relative movement of the hoisting tool and the screw machine is avoided. And a plurality of connecting ropes for connecting the screw machine are hooked on the lifting hook, so that the screw machine is conveniently connected with the lifting hook. The screw conveyor is hoisted by a travelling crane in the whole assembling process, obstacles can be well avoided through matching of the connecting rope and different hoisting points, convenient assembling of the screw conveyor is effectively achieved, the hoisting tool is adopted as a newly-added hoisting point, and the tool can be flexibly arranged on the surface of the screw conveyor.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machine assembly, in particular to a detachable hoisting system for a screw conveyor. Background Art

[0002] During the assembly phase of the shield machine's screw conveyor, especially when using a small-diameter shield and a main beam assembly machine, there is a problem of difficulty in positioning the screw conveyor. The screw conveyor is referred to as a screw conveyor. The screw conveyor has two lifting ears, each of which is connected to the same crane hook through a lifting rope. The crane hook controls the movement of the screw conveyor, such as Figure 1 However, due to the large size of the main beam assembly machine's moving frame and slewing frame, the hoisting rope in front of the screw machine interferes with the slewing frame, that is, the slewing frame will interfere with the screw machine's hoisting path, resulting in the screw machine being unable to be installed in place at one time by the crane. Figure 2 shown.

[0003] For the above situation, the existing technical solution is to remove the oil cylinder at the front of the assembling machine's mobile frame, and then move the slewing frame toward the rice beam to reduce the interference between the screw machine and the slewing frame. In addition, two groups of hand hoists are hung at the rice beam and the front shield, and two hanging points are found on the screw machine barrel section. The screw machine is suspended by two groups of hand hoists and a lifting rope. At this time, the lifting rope that is about to interfere with the slewing frame is removed. The hand hoist at the front shield is used to adjust the angle between the screw machine and the horizontal direction to ensure that the screw shaft of the screw machine can smoothly enter the spherical bearing and the screw machine seat. The hand hoist at the rice beam is used to provide the screw machine with a forward pulling force, so that the screw machine is transported to the installation position under the support of the support mechanism and the hand hoist at the front shield.

[0004] To arrange hanging points on the barrel section of the screw machine, it is necessary to weld lugs onto the barrel section. The barrel section is relatively thin. If welded lugs are used as hanging points, the contact area between the welded lugs and the barrel section is small, the stress on the contact surface is too high, and the barrel section is easily deformed. The lugs cannot be repositioned after welding. Therefore, the position of the welded lugs cannot be arbitrarily set on the barrel section surface. The welding position is limited, and the lugs need to be cut and removed after use, making them impossible to reuse. Moreover, the entire assembly process is manual, and the screw machine slides on the assembly machine. The screw machine weighs tens of tons, making assembly time-consuming and labor-intensive. If the two hand hoists do not cooperate properly, safety accidents are likely to occur. Summary of the Invention

[0005] In order to solve the problems of unreliable use of welded lifting ears as hanging points and high risk of screw machine lifting, the utility model provides a detachable lifting system for the screw conveyor, which adopts detachable tooling as the lifting ears to ensure the reliable installation of the lifting ears and the screw machine barrel section, and at the same time changes the lifting process, so that the screw machine can be smoothly lifted and assembled without the need for tedious operations.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A detachable lifting system for a screw conveyor is used for lifting and assembling the screw conveyor, comprising a lifting tool, a hook controlled by a crane, and a connecting rope. The lifting tool can be detachably arranged on the screw machine to complete the non-destructive installation of the lifting tool. The lifting tool comprises an upper buckle, a lower buckle, and a main lifting ear. The upper buckle and the lower buckle are bolted together and then sleeved on the outside of the screw machine. The main lifting ear is detachably arranged on the upper buckle, which facilitates the replacement of the main lifting ear. The upper buckle and the lower buckle are both provided with locking bolts for tightening the screw machine to prevent relative movement between the lifting tool and the screw machine; a plurality of the connecting ropes for connecting the screw machine are hung on the hook, which facilitates the connection between the screw machine and the hook.

[0008] Furthermore, the upper buckle ring is a semicircular ring structure, and both ends of the upper buckle ring are bent outward horizontally to form flange plates;

[0009] The lower buckle ring and the upper buckle ring have the same structure, and connecting bolts are provided between the flange plates corresponding to the upper buckle ring and the lower buckle ring to facilitate the disassembly and assembly between the upper buckle ring and the lower buckle ring. The upper buckle ring and the lower buckle ring are connected and combined to form a circular ring, and the lifting tooling can also be conveniently installed outside the screw machine.

[0010] Furthermore, there are multiple locking bolts, which are evenly arranged around the screw machine in a circumferential direction, ensuring the reliability of the lifting fixture after installation.

[0011] Furthermore, the main lifting ear includes a base plate, a lifting ear body and a rib plate. The base plate is bent into an arc shape, fits on the surface of the upper buckle, and is bolted to the upper buckle, which facilitates the disassembly and assembly of the main lifting ear. The lifting ear body is arranged upward from the middle of the base plate, and the rib plates are respectively arranged between the two sides of the lifting ear body and the base plate, thereby improving the installation strength of the lifting ear body.

[0012] Furthermore, each of the connecting ropes includes a hand hoist and a steel wire rope connected to each other, thereby realizing a length adjustment function of the connecting rope.

[0013] Through the above technical solution, the beneficial effects of the utility model are:

[0014] The lifting fixture of this utility model increases the contact area with the screw machine barrel, reduces stress on the contact surface, and prevents screw machine failure caused by deformation of the barrel on the contact surface. The lifting fixture is removable for installation, eliminating the need for flame cutting during removal, reducing damage to the screw machine surface caused by flame cutting. The lifting fixture is highly adaptable to the installation position and can be relocated, making it more suitable for a wider range of uses than existing welded lifting lugs. The lifting fixture uses locking bolts to push into the outer surface of the screw machine to prevent the screw machine and the fixture from slipping during the lifting process.

[0015] The screw machine of the present invention has two lifting ears. In order to realize the replacement of lifting points during the lifting process and thereby avoid the slewing frame, a new lifting point is added here, that is, a lifting tool is added, and then the screw machine has three lifting points. By connecting ropes and coordinating with different lifting points, the screw machine can be lifted by a crane throughout the whole process, and obstacles can be avoided, so that the installation of the screw machine can be completed safely and stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the crane hook connected to the screw machine through the lifting rope.

[0017] Figure 2 This is a schematic diagram showing the interference between the lifting rope and the slewing frame when the crane is lifting the screw machine.

[0018] Figure 3 This is a cross-sectional view of a hoisting tooling of a detachable hoisting system for a screw conveyor according to the utility model.

[0019] Figure 4 This is an axonometric drawing of a lifting fixture of a detachable lifting system for a screw conveyor according to the utility model.

[0020] Figure 5 This is a schematic diagram of the state in which the hook is connected to the second and third lifting points respectively in stage 1 of a detachable lifting system for a screw conveyor according to the present invention.

[0021] Figure 6 This is a schematic diagram of a state in which the connecting rope at the second lifting point and the slewing frame are about to interfere with each other in stage 1 of a detachable lifting system for a screw conveyor according to the present invention.

[0022] Figure 7 The utility model is a schematic diagram of the connection state of the hook and the lifting point in stage 2 of a detachable lifting system for a screw conveyor.

[0023] Figure 8 This utility model is a detachable lifting system for a screw conveyor. Figure 7 Schematic diagram of the screw machine lifting status.

[0024] Figure 9 This utility model is a detachable lifting system for a screw conveyor. Figure 8 Schematic diagram of the installation of the medium lifting tooling and screw machine.

[0025] Figure 10 This is a schematic diagram of stage 2 of a detachable lifting system for a screw conveyor of the utility model, in which the crane drives the screw conveyor to move again.

[0026] Figure 11 This is a schematic diagram of the second stage of a detachable lifting system for a screw conveyor of the utility model, in which the screw conveyor is installed.

[0027] The numbers in the accompanying drawings are: 1 crane hook, 2 lifting rope, 3 screw machine, 4 slewing frame, 5 meter beam, 6 front shield, 7 lifting tooling, 8 hook, 9 connecting rope, 10 upper buckle, 11 lower buckle, 12 main lifting ear, 121 bottom plate, 122 lifting ear body, 123 stiffener, 13 flange plate, 14 connecting bolt, 15 locking bolt, 16 lifting point one, 17 lifting point two, 18 lifting point three. DETAILED DESCRIPTION

[0028] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings:

[0029] like Figures 3 to 11 As shown, a detachable lifting system for a screw conveyor is used for lifting and assembling the screw conveyor, comprising a lifting fixture 7, a hook 8 controlled by a crane, and a connecting rope 9. The lifting fixture 7 is detachably mounted on the screw conveyor 3. The lifting fixture 7 can be regarded as a new lifting lug on the screw conveyor 3. The lifting lug is not fixed by welding, but is detachably installed to achieve non-destructive installation. It can be arranged at an appropriate position on the cylinder section of the screw conveyor 3.

[0030] The lifting fixture 7 includes an upper retaining ring 10, a lower retaining ring 11, and a main lifting lug 12. The upper retaining ring 10 is a semicircular ring structure, with both ends of the upper retaining ring 10 bent horizontally outward to form flange plates 13. The lower retaining ring 11 has the same structure as the upper retaining ring 10. The upper and lower retaining rings 10 and 11 are bolted together and then sleeved on the outside of the screw machine 3. Specifically, connecting bolts 14 are provided between the corresponding flange plates 13 of the upper and lower retaining rings 10 and 11. The bolted combination of the upper and lower retaining rings 10 and 11 forms a circular ring shape, which is convenient for sleeved installation on the outside of the screw machine 3.

[0031] The upper buckle 10 is provided with a detachable main lifting lug 12 for connecting a lifting rope. The main lifting lug 12 is installed using a detachable structure. Specifically, the main lifting lug 12 comprises a base plate 121, a lifting lug body 122, and a rib plate 123. The base plate 121 is curved into an arc shape and fits against the surface of the upper buckle 10. The base plate 121 is bolted to the upper buckle 10, securing the base plate 121 to the upper buckle 10.

[0032] A lifting lug body 122 is positioned upward from the center of the base plate 121. To enhance the structural strength of the lifting lug body 122, ribs 123 are provided on either side of the lifting lug body 122 and between the base plate 121. There are two ribs 123 on each side, each rib 123 being a right-angled trapezoidal shape, ensuring the connection strength between the lifting lug body 122 and the base plate 121.

[0033] To prevent the lifting fixture 7 from sliding on the screw machine 3, the upper and lower retaining rings 10 and 11 are each provided with locking bolts 15 for tightening the screw machine 3. There are multiple locking bolts 15, which are evenly distributed around the screw machine 3. In this case, two locking bolts 15 are arranged on each of the upper and lower retaining rings 10 and 11. After being tightened, the locking bolts 15 are tightly pressed against the outer wall of the screw machine 3, thereby achieving relative fixation between the lifting fixture 7 and the screw machine 3.

[0034] A plurality of connecting ropes 9 for connecting the screw machine 3 are hooked on the hook 8, where the number of the connecting ropes 9 is three, and the connecting ropes 9 can connect the screw machine 3 and the hook 8. Each connecting rope 9 includes a hand chain hoist and a wire rope connected to each other, and the length of the connecting rope 9 is adjustable.

[0035] It should be noted that before the screw machine 3 is put into the workstation, it has two built-in lifting lugs. The installation of the lifting fixture 7 on the screw machine 3 adds one lifting lug, bringing the total number of lifting lugs to three. Along the length of the screw machine 3, the lifting lugs, from front to back, form lifting point 1 16, lifting point 2 17, and lifting point 3 18. The lifting fixture 7 is lifting point 16, while the two built-in lifting lugs on the screw machine 3 are lifting point 2 17 and lifting point 3 18.

[0036] The hoisting process of the present invention is as follows: Stage 1, crane hooking: Select a connecting rope 9 to connect the second lifting point 17 to the hook 8, and simultaneously select another connecting rope 9 to connect the third lifting point 18 to the hook 8. After the hook 8 is raised, the screw machine 3 is suspended via the two connecting ropes 9. The lengths of the connecting ropes 9 are then adjusted to adjust the angle of the screw machine 3 to the installation angle. Under the crane's lifting motion, the screw machine 3 is slowly moved toward the main machine for installation. During the slow movement of the screw machine 3, the crane stops when the connecting rope 9 on the second lifting point 17 is 200 mm away from the slewing frame 4.

[0037] Phase 2: Replacement of Lifting Points: Install lifting fixture 7 at a suitable location on screw conveyor 3, at lifting point 16. Connect lifting point 16 to hook 8 with a connecting rope 9, keeping it taut. Then, slowly loosen connecting rope 9 at lifting point 2 17 to avoid collision with slewing frame 4. This ensures that screw conveyor 3 is fully supported by connecting ropes 9 at lifting points 16 and 3 18.

[0038] At this point, the two connecting ropes 9 are positioned on the front and rear sides of the slewing frame 4, respectively. Specifically, the slewing frame 4 is positioned between the connecting rope 9 at lifting point 16 and the connecting rope 9 at lifting lug 2, eliminating any interference between the connecting rope 9 at lifting point 2 17 and the slewing frame 4. The crane is restarted, and the screw conveyor 3 is transported to the installation location. If the connecting rope 9 at lifting point 3 18 interferes with the slewing frame 4, the slewing frame 4 is moved toward the main engine to eliminate the interference, completing the installation of the screw conveyor 3.

[0039] The present invention can avoid the interference of the slewing frame 4 by hoisting. By using multiple connecting ropes 9 and different lifting points, different lifting points can be selected to avoid obstacles, thereby solving the problem of difficulty in assembling the screw machine 3 due to interference from the slewing frame 4. The screw machine 3 can be hoisted throughout the entire process to complete the installation, which is more reliable and efficient than conventional solutions.

[0040] The embodiments described above are only preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A detachable lifting system for a screw conveyor, used for lifting and assembling a screw conveyor, characterized in that: The invention comprises a lifting tool (7), a hook (8) controlled by a traveling crane, and a connecting rope (9); the lifting tool (7) is detachably arranged on the screw machine (3); the lifting tool (7) comprises an upper buckle (10), a lower buckle (11), and a main lifting lug (12); the upper buckle (10) and the lower buckle (11) are bolted together and then sleeved on the outside of the screw machine (3); the main lifting lug (12) is detachably arranged on the upper buckle (10); the upper buckle (10) and the lower buckle (11) are both provided with locking bolts (15) for tightening the screw machine (3); and a plurality of the connecting ropes (9) for connecting the screw machine (3) are hung on the hook (8).

2. The detachable lifting system for a screw conveyor according to claim 1, characterized in that: The upper buckle ring (10) is a semicircular ring structure, and both ends of the upper buckle ring (10) are bent outward horizontally to form flange plates (13); The lower buckle ring (11) and the upper buckle ring (10) have the same structure, and a connecting bolt (14) is provided between the flange plates (13) corresponding to the upper buckle ring (10) and the lower buckle ring (11). The upper buckle ring (10) and the lower buckle ring (11) are connected and assembled to form a circular ring shape.

3. The detachable lifting system for a screw conveyor according to claim 1, characterized in that: There are multiple locking bolts (15), and the multiple locking bolts (15) are evenly arranged in the circumferential direction on the circumference of the screw machine (3).

4. The detachable lifting system for a screw conveyor according to claim 1, characterized in that: The main lifting lug (12) comprises a bottom plate (121), a lifting lug body (122) and a rib plate (123), wherein the bottom plate (121) is bent into an arc shape, the bottom plate (121) is attached to the surface of the upper buckle (10) and is bolted to the upper buckle (10), the lifting lug body (122) is arranged upward in the middle of the bottom plate (121), and the rib plates (123) are respectively arranged between the two sides of the lifting lug body (122) and the bottom plate (121).

5. The detachable lifting system for a screw conveyor according to claim 1, characterized in that: Each of the connecting ropes (9) comprises a hand chain hoist and a steel wire rope connected to each other.

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