Asymmetric structure whole bomb lifting device and lifting method

Abstract

This invention provides an asymmetrical structure projectile lifting device for lifting asymmetrical projectiles with a cable cover on one side. It solves the problem of low lifting efficiency caused by the need for large-angle circumferential rotation before and after lifting asymmetrical projectiles. The lifting device includes a sling and an adapter assembly. The sling is used to connect to the lifting equipment after passing around the projectile and the adapter assembly. The adapter assembly includes an adapter body and two pads. The adapter body has an arc-shaped structure, including an inner arc surface and an outer arc surface. A groove is provided at the center of the inner arc surface, axially penetrating the adapter body, with the groove width greater than the cable cover width. The two pads are symmetrically fixed to the inner arc surfaces on both sides of the groove in the adapter body. The adapter assembly covers the cable cover on the projectile at the location of the sling through the groove on its inner arc surface. The cable cover is located within the groove on the inner arc surface of the adapter assembly. The pads contact the outer circumferential surface of the projectile, and the outer arc surface of the adapter body contacts the sling.

Description

Technical Field

[0001] This invention belongs to the field of lifting equipment technology, specifically relating to an asymmetric structure whole-piece lifting equipment and its lifting method. Background Technology

[0002] A missile is generally assembled from multiple sections. The missile's cables usually run from front to back through all the sections. For aerodynamic reasons, the cables are usually installed inside the sections. However, some sections cannot have cables installed inside due to special requirements such as the explosive charge or structure. In these cases, the cables are usually installed on one side outside the section, and then cable covers are installed outside the cables for protection. This results in the cross-section of the missile (or a part of the missile) not being symmetrical from left to right, thus forming an asymmetrical missile structure.

[0003] When lifting such a complete bomb, there is interference between the cable cover and the lifting equipment. In order to avoid damage or destruction to the cable cover due to stress during lifting or hoisting, the common method is to rotate the complete bomb about 90 degrees upward in the circumferential direction until the cable cover is rotated above the complete bomb before lifting the complete bomb. After the complete bomb is placed on other tooling or brackets, the complete bomb is then rotated in the opposite direction in the circumferential direction to the initial state.

[0004] The above method requires the entire missile to rotate approximately 90 degrees circumferentially, necessitating tooling or brackets with large-angle circumferential rotation mechanisms. This increases the complexity of the tooling or brackets, as well as their size, weight, and cost. Furthermore, large-angle circumferential rotation of the entire missile is required both before and after lifting, necessitating multiple operators to coordinate and operate the handwheels simultaneously. This process is cumbersome, time-consuming, and increases workload and operational difficulty. Moreover, it cannot achieve direct and rapid hoisting of the entire missile onto the bracket, resulting in low hoisting efficiency and impacting equipment support efficiency. Summary of the Invention

[0005] In view of this, the present invention provides an asymmetric structure whole-project lifting device that can realize the lifting of asymmetric structure whole-projects, and solves the problems of the previous asymmetric structure whole-project lifting which required large-angle rotation in the circumferential direction before and after lifting, required tooling brackets with large-angle rotation in the circumferential direction, required multiple people to cooperate and operate synchronously, and had low lifting efficiency.

[0006] This asymmetric structure projectile lifting device is used for lifting asymmetric structure projectiles with a cable cover on one side; the lifting device includes: a combination of lifting straps and adapters;

[0007] The sling is used to bypass the entire projectile and the adapter assembly and connect to the hoisting equipment;

[0008] The adapter assembly includes: an adapter body and two pads;

[0009] The adapter body has an arc-shaped structure, including an inner arc surface and an outer arc surface; a groove is provided in the middle of the circumference of the inner arc surface, which axially penetrates the adapter body, and the width of the groove is greater than the width of the cable cover; two pads are respectively symmetrically fixed on the inner arc surfaces on both sides of the groove of the adapter body.

[0010] The adapter assembly covers the outside of the cable cover at the location of the sling on the whole projectile through a groove on its inner arc surface. The cable cover is located in the groove on the inner arc surface of the adapter assembly. The pad is in contact with the outer circumferential surface of the whole projectile, and the outer arc surface of the adapter body is in contact with the sling.

[0011] As a preferred embodiment of the present invention: in the adapter assembly, the inner bottom surface of the groove is an inner arc surface A, and the inner arc surfaces of the two pads are inner arc surfaces B;

[0012] The inner arc surface A and the inner arc surface B are coaxial;

[0013] The radius of the inner arc surface B is the same as the radius of the outer arc surface of the adapter body, and the distance between the central axis of the outer arc surface of the adapter body and the central axis of the inner arc surface B is L1.

[0014] As a preferred embodiment of the present invention, the rated load of the sling is greater than twice the weight of the entire projectile.

[0015] In a preferred embodiment of the present invention, the two end faces of the adapter assembly along the axial direction are a front end face and a rear end face, and the distance between the front end face and the rear end face is greater than the width of the sling.

[0016] As a preferred embodiment of the present invention, there is a gap between the bottom surface of the inner groove of the adapter body and the outer wall surface of the cable cover.

[0017] As a preferred embodiment of the present invention: the front end face and the rear end face of the adapter assembly are respectively located on the front and rear sides of the vertical line of the center of mass of the entire projectile, and the distances from the front and rear end faces of the adapter assembly to the vertical line of the center of mass of the entire projectile are equal.

[0018] In a preferred embodiment of the present invention, the adapter body is made of metal and the pad is made of non-metallic material.

[0019] Furthermore, this invention provides a method for lifting an asymmetric structure whole project using the aforementioned asymmetric structure whole project lifting device, comprising the following steps:

[0020] S1: Adjust the entire projectile so that its longitudinal axis is horizontal and the cable cover's symmetry plane is horizontal. Start the hoisting equipment and adjust the hoisting equipment's hook to be directly above the projectile's center of mass. Move the hook laterally toward the cable cover. The moving distance is half the distance between the center axis of the outer arc surface of the adapter assembly and the center axis of the inner arc surface of the adapter assembly. Lower the hook.

[0021] S2: Hook one end of the sling onto the hook of the hoisting equipment, and then hook the other end of the sling onto the hook of the hoisting equipment after passing it under the whole projectile. There is a gap between the sling and the cable cover of the whole projectile for inserting the adapter assembly.

[0022] S3: Install an adapter assembly between the cable cover and the sling of the whole projectile. The two pads of the adapter assembly are in contact with the outer circumferential surface of the whole projectile. The pads are respectively on both sides of the cable cover. The groove of the inner arc surface of the adapter assembly covers the outside of the cable cover. The side of the pad and the bottom surface of the groove are left with the cable cover. The adapter assembly is in contact with the sling or has a gap.

[0023] S4: Adjust the position of the adapter assembly along the circumference of the entire spring so that the two pads of the adapter assembly are symmetrical with respect to the central axis of the cable cover;

[0024] S5: Adjust the position of the adapter assembly along the axis of the entire projectile so that the front and rear faces of the adapter assembly are on the front and rear sides of the vertical line of the center of mass of the entire projectile, respectively, and the distance from the front face of the adapter assembly to the vertical line of the center of mass of the entire projectile is equal to the distance from the rear face of the adapter assembly to the vertical line of the center of mass of the entire projectile.

[0025] S6: Keep the adapter assembly in the same position, raise the hook until the sling just touches the outer arc surface of the adapter assembly;

[0026] S7: Keep the adapter assembly position unchanged, continue to raise the hook until the whole projectile is detached from the fixture or bracket, continue to raise until the whole projectile and the fixture or bracket reach the set safe distance, and complete the lifting of the whole projectile.

[0027] Beneficial effects:

[0028] (1) The lifting device of the present invention, through the combination of the sling and the adapter, can realize the lifting of the whole project with an asymmetrical structure formed by a cable cover on one side; and can be adapted to the lifting of whole project with a variety of cross-sectional diameters. As long as it is within the bearing range of the sling, it can lift whole project with a variety of cross-sectional diameters without the need to develop multiple types of lifting devices to adapt to the lifting of whole project with different cross-sectional diameters. The radius of the inner arc surface B in the adapter combination is equal to the radius of the whole project's circular surface. By adjusting the position of the adapter combination and the hook, it is ensured that the length of the left and right sides of the sling above the horizontal plane of the longitudinal axis of the whole project is the same and the stress state is the same. The sling will not move relative to the whole project in the circumferential direction, thereby ensuring that the whole project will not rotate in the circumferential direction during the lifting process. After the whole project is lifted, there is no need to rotate the whole project in the circumferential direction.

[0029] (2) With the lifting device of the present invention, the whole missile does not need to be rotated at a large angle in the circumferential direction before and after the whole missile is lifted. As a result, the tooling or bracket does not need to have a large angle circumferential rotation mechanism, which simplifies the tooling or bracket and reduces the size, weight and cost of the tooling or bracket. At the same time, the lifting device is easy to operate, reduces the workload and operation difficulty, and enables the whole missile to be directly and quickly lifted onto the bracket, with high lifting efficiency.

[0030] (3) In the lifting device of the present invention, the circumferential width of the groove on the adapter body is greater than the maximum circumferential width of the cable cover, and the two intersections of the inner arc surface and the outer arc surface of the adapter assembly have rounded corners, which reduces the difficulty of lifting operation and improves the lifting safety.

[0031] (4) The lifting device of the present invention has an adapter body made of low-hardness metal material and a pad made of non-metal material, so that the entire round surface will not be worn during the lifting process. Attached Figure Description

[0032] Figure 1 This is a front view of the asymmetric structure whole-piece lifting device of the present invention;

[0033] Figure 2 for Figure 1 View from direction A;

[0034] Figure 3 The main view of the adapter assembly;

[0035] Figure 4 Side view of the adapter assembly;

[0036] Among them, 1-sling, 2-adapter assembly, 3-whole projectile, 4-cable cover, 5-whole projectile center of gravity, 6-center of gravity plumb line, 201-adapter body, 202-pad block. Detailed Implementation

[0037] To better understand the present invention, the technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0038] Example 1:

[0039] This embodiment provides an asymmetric structure whole-project lifting tool for lifting asymmetric structure whole-projects formed by having a cable cover 4 on one side of the outer surface.

[0040] like Figure 1 and Figure 2 As shown, the lifting device includes a sling 1 and an adapter assembly 2. The sling 1 is a flat, strip-shaped structure with two openings at both ends for engaging with the hooks of the lifting equipment. The size of the openings is larger than the size of the hooks of the lifting equipment. The length of the sling 1 is greater than the circumference of the entire projectile 3, and the rated load of the sling 1 is greater than twice the weight of the entire projectile 3. During lifting, the plumb line 6 of the center of gravity of the entire projectile 3 is located within the central symmetry plane of the sling 1.

[0041] like Figure 3 and Figure 4 As shown, the adapter assembly 2 covers the cable cover 4 at the location of the sling on the entire projectile 3 (the adapter assembly 2 only needs to ensure that it can separate the sling 1 and the cable cover 4). It includes: an adapter body 201 and two pads 202. The adapter body 201 has an arc-shaped structure, including an inner arc surface and an outer arc surface. A groove is provided at the middle position of its inner arc surface along the circumference, which axially penetrates the adapter body 201. The width of the groove (circumferential dimension) is greater than the width of the cable cover 4. The two pads 202 are symmetrically fixed on the inner arc surfaces on both sides of the groove of the adapter body 201. The inner arc surface of the adapter assembly 2 thus formed is divided into three parts along the circumference: the bottom surface of the groove (let's call it inner arc surface A) and the inner arc surfaces of the pads 202 on both sides of the inner arc surface A (let's call them inner arc surfaces B). In adapter assembly 2, the radius of the inner arc surface B is R1, which is the same as the radius of the whole projectile 3 and can fit on the outer circumference of the whole projectile 3; the radius of the inner arc surface A is R2, which is greater than the maximum radial dimension of the cable cover 4; the radius of the outer arc surface of adapter assembly 2 is R3, which is equal to R1.

[0042] The two inner arc surfaces B of adapter assembly 2 are coaxial with the inner arc surface A of adapter assembly 2. The central axis of the outer circular surface of adapter assembly 2 is in the circumferential symmetry plane of adapter assembly 2. The central axis of the outer circular surface of adapter assembly 2 is parallel to the central axis of the two inner arc surfaces B of adapter assembly 2. The distance between the central axis of the outer arc surface of adapter assembly 2 and the central axis of the two inner arc surfaces B of adapter assembly 2 is L1.

[0043] The adapter assembly 2 covers the outside of the cable cover 4 on the whole project 3 through the groove on its inner arc surface. The cable cover 4 is located in the groove on its inner arc surface. The pad 202 on the inner arc surface B is in contact with the outer circumferential surface of the whole project 3. The outer arc surface of the adapter body 201 is in contact with the sling 1.

[0044] In adapter assembly 2, two inner arc surfaces B are located on two pads 202 respectively. The two inner arc surfaces B are symmetrically distributed about the symmetrical surface of adapter assembly 2. Inner arc surface A is located on adapter body 201 and is in the middle of adapter assembly 2 along the circumference. The symmetrical surface of inner arc surface A is coplanar with the symmetrical surface of adapter assembly 2.

[0045] The adapter assembly 2 has a front face and a rear face along its axial direction. The front face of the adapter assembly 2 is parallel to the rear face of the adapter block. The distance between the front and rear faces of the adapter assembly 2 (i.e., the width of the adapter assembly 2) is L3, and the width of the sling 1 is L4, where L3 is greater than L4. Furthermore, the front face and the rear face of the adapter assembly 2 are located on the front and rear sides of the vertical line 6 of the center of mass of the entire projectile, respectively. The distance from the front face of the adapter assembly 2 to the vertical line 6 of the center of mass of the entire projectile is equal to the distance from the rear face of the adapter assembly 2 to the vertical line 6 of the center of mass of the entire projectile.

[0046] As an example, the adapter body 201 is made of metal, and the two pads 202 are made of non-metallic material; the circumferential width of the groove on the adapter body 201 is greater than the maximum circumferential width of the cable cover 4; and the two intersections of the inner arc surface B and the outer arc surface on both sides of the adapter body 201 have rounded corners.

[0047] Example 2:

[0048] Based on the above-mentioned lifting device, this embodiment provides a method for lifting an asymmetric structure as a whole, including the following steps:

[0049] S1: Adjust the entire projectile 3 so that its longitudinal axis is horizontal and the symmetrical plane of the cable cover 4 is horizontal; start the hoisting equipment, adjust the hook of the hoisting equipment to be directly above the center of mass 5 of the entire projectile, move the hook laterally towards the cable cover 4, the moving distance is L2, L2 is half of L1, and then lower the hook.

[0050] S2: Hang the opening at one end of the sling 1 on the hook of the hoisting equipment, pass the other end of the sling 1 under the whole shell 3, and hang the opening at the other end of the sling 1 on the hook of the hoisting equipment. There is a gap between the sling 1 and the cable cover 4 of the whole shell 3. The gap between the sling 1 and the cable cover 4 of the whole shell 3 can easily accommodate the adapter assembly 2.

[0051] S3: Install adapter assembly 2 between cable cover 4 and sling 1 of the whole project 3. Make the two pads 202 of adapter assembly 2 contact the outer circumferential surface of the whole project 3. The two pads 202 of adapter assembly 2 are respectively above and below the cable cover 4. The groove of adapter assembly 2 covers the outside of the cable cover 4. In the circumferential direction, there is a gap between the two pads 202 and the cable cover 4. In the radial direction, there is a gap between the inner arc surface A of the adapter body 201 and the cable cover 4. Adapter assembly 2 is in contact with or has a gap with sling 1.

[0052] S4: Adjust the position of adapter assembly 2 along the circumference of the whole spring 3. The two pads 202 of adapter assembly 2 are symmetrical with respect to the central axis of cable cover 4.

[0053] S5: Adjust the position of adapter assembly 2 along the axis of the whole projectile 3 so that the front end face and the rear end face of adapter assembly 2 are on the front and rear sides of the vertical line 6 of the center of mass of the whole projectile, respectively, and the distance from the front end face of adapter assembly 2 to the vertical line 6 of the center of mass of the whole projectile is equal to the distance from the rear end face of adapter assembly 2 to the vertical line 6 of the center of mass of the whole projectile.

[0054] S6: Keep the position of adapter assembly 2 unchanged, slowly raise the hook until the sling 1 just contacts the outer arc surface of adapter assembly 2;

[0055] S7: Keep the adapter assembly 2 in the same position and continue to slowly raise the hook until the whole bomb 3 is detached from the tooling or bracket. Continue to raise until the whole bomb 3 is at a safe distance from the tooling or bracket, and complete the lifting of the whole bomb 3.

[0056] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for lifting an entire asymmetric structure, characterized in that, An asymmetric structure whole-project lifting device is used for lifting asymmetric structure whole-projects formed by having a cable cover (4) on one side. The device includes: a lifting strap (1) and an adapter assembly (2). The sling (1) is used to bypass the entire projectile (3) and the adapter assembly (2) and connect to the hoisting equipment; the adapter assembly (2) includes: an adapter body (201) and two pads (202). The adapter body (201) has an arc-shaped structure, including an inner arc surface and an outer arc surface; a groove is provided in the middle of the circumferential direction of the inner arc surface, which axially penetrates the adapter body (201), and the width of the groove is greater than the width of the cable cover (4); the two pads (202) are respectively symmetrically fixed on the inner arc surfaces on both sides of the groove of the adapter body (201); The adapter assembly (2) covers the outside of the cable cover (4) at the location of the sling (1) on the whole project (3) through the groove on its inner arc surface. The cable cover (4) is located in the groove on the inner arc surface of the adapter assembly (2). The pad (202) is in contact with the outer circumferential surface of the whole project (3). The outer arc surface of the adapter body (201) is in contact with the sling (1). In the adapter assembly (2), the bottom surface of the groove is an inner arc surface A, and the inner arc surfaces of the two pads (202) are inner arc surfaces B; the inner arc surfaces A and B are coaxial; the radius of the inner arc surface B is the same as the radius of the outer arc surface of the adapter body (201), and the distance between the central axis of the outer arc surface of the adapter body (201) and the central axis of the inner arc surface B is L1; The lifting method includes the following steps: S1: Adjust the whole projectile (3) so that the longitudinal axis of the whole projectile (3) is horizontal and the symmetrical plane of the cable cover (4) is horizontal. Start the hoisting equipment and adjust the hook of the hoisting equipment to be directly above the center of mass (5) of the whole projectile. Move the hook in the direction of the cable cover (4) laterally. The moving distance is half the distance between the center axis of the outer arc surface of the adapter assembly (2) and the center axis of the inner arc surface of the adapter assembly (2). Lower the hook. S2: Hang the opening at one end of the sling (1) on the hook of the hoisting equipment, and hang the opening at the other end of the sling (1) on the hook of the hoisting equipment after passing it under the whole projectile (3). There is a gap between the sling (1) and the cable cover (4) of the whole projectile (3) for inserting the adapter assembly (2). S3: Install an adapter assembly (2) between the cable cover (4) and the sling (1) of the whole project (3). The two pads (202) of the adapter assembly (2) are in contact with the outer circumferential surface of the whole project (3). The pads (202) are on both sides of the cable cover (4) respectively. The groove of the inner arc surface of the adapter assembly (2) covers the outside of the cable cover (4). The side of the pad (202) and the bottom surface of the groove are both left with the cable cover (4). The adapter assembly (2) is in contact with or has a gap with the sling (1). S4: Adjust the position of the adapter assembly (2) along the circumference of the whole spring (3) so that the two pads (202) of the adapter assembly (2) are symmetrical with respect to the central axis of the cable cover (4); S5: Adjust the position of the adapter assembly (2) along the axis of the whole project (3) so that the front end face and the rear end face of the adapter assembly (2) are on the front and rear sides of the vertical line (6) of the center of mass of the whole project, respectively, and the distance from the front end face of the adapter assembly (2) to the vertical line (6) of the center of mass of the whole project is equal to the distance from the rear end face of the adapter assembly (2) to the vertical line (6) of the center of mass of the whole project. S6: Keep the position of the adapter assembly (2) unchanged, raise the hook until the sling (1) just contacts the outer arc surface of the adapter assembly (2); S7: Keep the adapter assembly (2) in the same position, continue to raise the hook until the whole project (3) is separated from the tooling or bracket, continue to raise until the whole project (3) reaches the set safe distance from the tooling or bracket, and complete the lifting of the whole project (3).

2. The method for lifting an entire asymmetric structure according to claim 1, characterized in that: The rated load of the sling (1) is more than twice the weight of the whole projectile (3).

3. The method for lifting an entire asymmetric structure according to claim 1, characterized in that: The adapter assembly (2) has two axial end faces, namely the front end face and the rear end face, and the distance between the front end face and the rear end face is greater than the width of the sling (1).

4. The method for lifting an entire asymmetric structure according to claim 1, characterized in that: There is a gap between the bottom surface of the groove of the adapter body (201) and the outer wall surface of the cable cover (4).

5. The method for lifting an entire asymmetric structure according to claim 3, characterized in that: The front and rear faces of the adapter assembly (2) are located on the front and rear sides of the vertical line (6) of the center of mass of the whole projectile, respectively, and the distances from the front and rear faces of the adapter assembly (2) to the vertical line (6) of the center of mass of the whole projectile are equal.

6. The method for lifting an entire asymmetric structure according to any one of claims 1-5, characterized in that: The adapter body (201) is made of metal, and the pad (202) is made of non-metal.

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