Special-shaped whole bomb lifting device and lifting method

Abstract

This invention provides a lifting method for irregularly shaped projectiles using a lifting device. During lifting, an adapter block is installed between the lifting strap and the irregularly shaped projectile. By adjusting the relative positions of the lifting strap, the adapter block, and the projectile, the projectile can be lifted. This solves the problems of previous methods, which required large-angle rotation along the circumferential direction before and after lifting irregularly shaped projectiles, necessitating tooling brackets with large-angle circumferential rotation mechanisms, requiring multiple people to coordinate synchronously, and resulting in low lifting efficiency. The lifting device includes: one or more lifting units; each lifting unit includes: a lifting strap and several adapter blocks; the lifting strap is a flexible strap that passes around the irregularly shaped projectile; the lifting strap has openings at both ends for engaging with hooks; several adapter blocks are provided between the irregularly shaped projectile and the lifting strap; one adapter block is provided on each of the two circumferential sides of each protruding structure.

Description

Technical Field

[0001] This invention belongs to the field of lifting equipment technology, specifically relating to an irregularly shaped integral lifting equipment and a lifting method. Background Technology

[0002] To meet special requirements such as air intakes or aerodynamic layouts, some missile bodies (or parts of missile bodies) have cross-sections that are not circular, but rather have irregularly shaped structures that protrude from a complete circle. These resulting missile bodies are called irregularly shaped missiles. Most of these irregularly shaped structures are located at the bottom of the irregularly shaped missile. When lifting irregularly shaped missiles, there is interference between the protruding irregularly shaped structures and the lifting equipment. To avoid damage or destruction to the protruding irregularly shaped structures due to stress during lifting or hoisting, a common method is to rotate the irregularly shaped missile in one circumferential direction until the protruding irregularly shaped structure is rotated above the irregularly shaped missile before lifting it. After the irregularly shaped missile is placed on other tooling or brackets, it is then rotated in the opposite circumferential direction to its initial state.

[0003] The above method requires large-angle rotation of the irregularly shaped missile along the circumference, 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 rotation of the irregularly shaped 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 irregularly shaped missile onto the bracket, resulting in low hoisting efficiency and impacting equipment support efficiency. Summary of the Invention

[0004] In view of this, the present invention provides a lifting device for irregularly shaped complete projectiles. The lifting device includes a lifting strap and several adapter blocks. During lifting, the adapter blocks are installed between the lifting strap and the irregularly shaped complete projectile. By adjusting the relative positions of the lifting strap, the adapter blocks and the irregularly shaped complete projectile, the lifting of the irregularly shaped complete projectile can be achieved. This solves the problems of the previous method of lifting irregularly shaped complete projectiles, which required large-angle rotation along the circumferential direction before and after lifting, required tooling brackets with large-angle rotation mechanisms, required multiple people to cooperate and operate synchronously, and had low lifting efficiency.

[0005] The technical solution of the present invention is: an irregularly shaped integral lifting device, comprising: one or more lifting units;

[0006] The lifting unit includes: a sling and several adapter blocks; the sling is a flexible sling that wraps around the irregularly shaped elastic; the sling has openings at both ends for engaging with a hook.

[0007] Several adapter blocks are provided between the irregularly shaped bullet and the sling; one adapter block is provided on each side of each of the protruding structures in the circumferential direction.

[0008] In a preferred embodiment of the present invention, the adapter block is an arc-shaped block, with its outer arc surface and inner arc surface being concentric; the width of the adapter block is greater than the width of the sling.

[0009] In a preferred embodiment of the present invention, the adapter block is made of a flexible material.

[0010] In a preferred embodiment of the present invention, when the lifting device includes an odd number of lifting units, one of the lifting units is set at the position of the vertical line of the center of gravity of the irregularly shaped projectile as a central lifting unit. The symmetry line of the lifting strap of the central lifting unit coincides with the vertical line of the center of gravity of the irregularly shaped projectile, and the remaining lifting units are symmetrically arranged on both sides of the vertical line of the center of gravity along the axial direction of the irregularly shaped projectile.

[0011] When the lifting device includes an even number of lifting units, the even number of lifting units are symmetrically arranged on both sides of the vertical line of the center of mass of the irregularly shaped integral piece along the axial direction of the integral piece.

[0012] In a preferred embodiment of the present invention, the lifting device is a single-point lifting device, including a lifting unit; the lifting unit is located at the position of the vertical line of the center of gravity of the irregularly shaped whole bullet, and the vertical line of the center of gravity of the irregularly shaped whole bullet is within the symmetrical plane of the center of the lifting strap;

[0013] The rated load of the sling is more than twice the weight of the irregularly shaped bullet.

[0014] In a preferred embodiment of the present invention, the lifting device is a dual-point lifting device, comprising two lifting units; the two lifting units are symmetrically arranged on both sides of the vertical line of the center of gravity of the irregularly shaped integral bullet along the axial direction of the integral bullet.

[0015] The rated load of the sling is greater than twice the weight of the irregularly shaped bullet.

[0016] Furthermore, this invention provides a method for lifting irregularly shaped integral parts, employing a single-point lifting device, comprising the following steps:

[0017] S1: Initially, the longitudinal axis of the irregularly shaped projectile is placed horizontally on the tooling or bracket. Start the hoisting equipment, adjust the hook of the hoisting equipment to be directly above the center of mass of the irregularly shaped projectile, and lower the hook.

[0018] S2: Hang one end of the sling on the hook of the hoisting equipment, and hang the other end on the hook of the hoisting equipment after passing under the irregularly shaped projectile. At this time, the vertical line of the center of gravity of the irregularly shaped projectile is in the symmetrical plane of the center of the sling. There is a gap between the sling and the irregularly shaped projectile for inserting the adapter block.

[0019] S3: Install an adapter block between the irregularly shaped projectile and the sling. Place one adapter block on each side of each protruding structure along the circumference of the projectile. The inner arc surface of each adapter block contacts the circumference of the irregularly shaped projectile, and the outer arc surface of the adapter block contacts the sling or leaves a gap.

[0020] S4: Adjust the position of the adapter blocks along the circumference of the irregularly shaped projectile so that the adapter blocks placed on both sides of the protruding structure have a gap with the protruding structure, and the adapter blocks placed on both sides of each protruding structure are symmetrical with respect to the central axis of the protruding structure; the adapter blocks placed on one side of the vertical line of the projectile's center of mass are symmetrical with respect to the vertical line of the projectile's center of mass as the adapter blocks placed on the other side of the vertical line of the projectile's center of mass.

[0021] S5: Adjust the position of the adapter block along the longitudinal direction of the irregularly shaped projectile so that the front end face and the rear end face of the adapter block are on the front and rear sides of the vertical line of the center of mass of the irregularly shaped projectile, respectively, and the distance from the front end face of the adapter block to the vertical line of the center of mass of the irregularly shaped projectile is equal to the distance from the rear end face to the vertical line of the center of mass of the irregularly shaped projectile.

[0022] S6: Keep the position of the adapter block unchanged, raise the hook until the sling just contacts the outer arc surface of the adapter block. During the raising of the hook, keep the plumb line of the center of gravity of the irregular whole projectile within the symmetrical plane of the center of the sling 91. Continue to raise the hook until the irregular whole projectile is separated from the fixture or bracket, and continue to raise it until the set safe distance is reached between the irregular whole projectile and the fixture or bracket to complete the lifting of the irregular whole projectile.

[0023] Furthermore, this invention provides a method for lifting irregularly shaped integral parts, employing a dual-point lifting device, comprising the following steps:

[0024] S1: Adjust the irregularly shaped projectile to make its longitudinal axis horizontal, and start two lifting devices, each with one hook, or start one lifting device with two hooks.

[0025] Adjust the first hook of the hoisting equipment to be directly above the center of gravity of the irregularly shaped projectile, and move it forward a certain distance in a direction parallel to the longitudinal axis of the irregularly shaped projectile. Adjust the second hook of the hoisting equipment to be directly above the center of gravity of the irregularly shaped projectile, and move it backward the same distance in a direction parallel to the longitudinal axis of the irregularly shaped projectile. Lower the first hook and the second hook.

[0026] S2: Hang one end of one of the slings on the first hook through the opening. The other end of the sling passes under the irregularly shaped projectile and hangs on the first hook through the opening at that end. At this time, the plumb line of the center of mass of the irregularly shaped projectile is parallel to the center symmetry plane of the sling. There is a gap between the sling and the irregularly shaped projectile for inserting the adapter block.

[0027] S3: Using the same method as above, hang the opening at one end of another sling on the second hook, and then hang the other end of the sling on the second hook through the opening at the other end after passing under the irregularly shaped projectile; at this time, the plumb line of the center of mass of the irregularly shaped projectile is parallel to the symmetrical plane of the center of the sling; there is a gap between the sling and the irregularly shaped projectile for inserting the adapter block.

[0028] S4: Install adapter blocks between the irregularly shaped bullet and the two slings respectively. The inner arc surface of the adapter block contacts the circular surface of the irregularly shaped bullet, and the outer arc surface of the adapter block contacts the slings or leaves a gap.

[0029] S5: Adjust the position of the adapter block between the irregularly shaped projectile and one of the slings along the circumference of the projectile, so that the adapter blocks placed on both sides of each protruding structure leave a gap with the protruding structure, the two adapter blocks placed on both sides of each protruding structure are symmetrical with respect to the central axis of the protruding structure, and the adapter blocks placed on one side of the vertical line of the projectile's center of mass are symmetrical with respect to the vertical line of the projectile's center of mass and the adapter blocks placed on the other side of the vertical line of the projectile's center of mass.

[0030] S6. Using the same method described above, adjust the position of the adapter block between the irregularly shaped projectile and another sling along the circumferential direction of the projectile.

[0031] S7: Adjust the position of the adapter block between the irregularly shaped projectile and one of the slings along the longitudinal direction of the irregularly shaped projectile, so that the front end face and the rear end face of the adapter block are on the front and rear sides of the central symmetry plane of the sling respectively, and the distance from the front end face of the adapter block to the central symmetry plane of the sling is equal to the distance from the rear end face of the adapter block to the central symmetry plane of the sling.

[0032] S8: Using the same method described above, adjust the position of the adapter block between the irregularly shaped projectile and the other sling along the longitudinal direction of the irregularly shaped projectile.

[0033] S9: Keep the positions of the two sets of adapter blocks unchanged, slowly raise the first hook and the second hook until the slings in the two lifting units just contact the outer arc surface of the corresponding adapter block. During the raising of the hooks, keep the plumb line of the center of mass of the irregular whole elastic parallel to the center symmetry plane of the two slings respectively.

[0034] S10: Keep the positions of the two sets of adapter blocks unchanged, continue to slowly raise the hook until the irregular whole projectile is separated from the tooling or bracket, continue to raise it until the irregular whole projectile and the tooling or bracket reach the set safe distance, and complete the lifting of the irregular whole projectile.

[0035] Beneficial effects:

[0036] (1) The present invention uses a combination of slings and adapter blocks. The slings ensure that the lifting device and the contact area of ​​the irregularly shaped projectile are in complete contact, thereby reducing the pressure and force on the irregularly shaped projectile in the contact area.

[0037] Meanwhile, the sling can be adapted to lift irregularly shaped whole missiles of different diameters, and has strong versatility. As long as it is within the sling's load-bearing range, irregularly shaped whole missiles can be lifted without the need to develop multiple types of lifting tools to adapt to lifting irregularly shaped whole missiles of different cross-sectional diameters.

[0038] Installing an adapter block between the sling and the irregularly shaped projectile can accommodate irregularly shaped structures with protrusions at various angles along the circumference of the projectile, greatly increasing the versatility of the lifting tools and methods for irregularly shaped projectiles.

[0039] (2) In this invention, by adjusting the position of multiple adapter blocks along the circumferential direction between the sling and the irregularly shaped projectile, the multiple adapter blocks are arranged on both sides of the vertical line of the center of mass of the irregularly shaped projectile, so that the multiple adapter blocks located on both sides of the vertical line of the center of mass of the irregularly shaped projectile are symmetrical about the vertical line. This ensures that the resultant force applied to the irregularly shaped projectile by the multiple adapter blocks during the lifting process falls on the vertical line of the irregularly shaped projectile, thereby ensuring that the irregularly shaped projectile will not rotate along the circumferential direction during the lifting process, and that there is no need to rotate the projectile along the circumferential direction after the irregularly shaped projectile is hoisted.

[0040] (3) In this invention, there is no need to rotate the irregularly shaped whole projectile at a large angle around the circumference before and after hoisting. As a result, the tooling or bracket does not need to have a large-angle circumferential rotation mechanism, which reduces the workload and operation difficulty, realizes the direct and rapid hoisting of irregularly shaped whole projectiles, and improves hoisting efficiency.

[0041] (4) This invention is applicable to single-point lifting. Only one hook is needed in the lifting equipment to complete the lifting of irregularly shaped whole pieces, which reduces the difficulty of lifting operation and improves the lifting safety.

[0042] (5) The present invention can also be applied to double lifting point lifting, that is, lifting irregular whole pieces by two hooks of one lifting equipment or two hooks provided by two or more lifting equipment. When lifting with double lifting point, the lifting load of a single hook is half that of a single hook when lifting with single lifting point, which reduces the load requirement of a single hook of the lifting equipment, lowers the difficulty of lifting operation, and improves the lifting safety. Attached Figure Description

[0043] Figure 1 This is a front view of the irregularly shaped integral shell lifting device of the present invention in use;

[0044] Figure 2 This is a schematic diagram illustrating the lifting process using a single lifting point.

[0045] Figure 3 This is a schematic diagram illustrating the lifting process using dual lifting points.

[0046] Among them, 1-sling, 2-adapter block one, 3-adapter block two, 4-adapter block three, 5-adapter block four, 6-irregularly shaped whole bullet, 7-protruding structure one, 8-protruding structure two, 9-irregularly shaped whole bullet center of mass, 10-center of mass plumb line. Detailed Implementation

[0047] 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.

[0048] Example 1:

[0049] This embodiment provides a lifting tool for irregularly shaped projectiles, used for lifting irregularly shaped projectiles with protruding structures on both sides of their outer surface.

[0050] like Figure 1 As shown, the irregularly shaped projectile lifting device includes: one or more lifting units; the lifting unit includes: a sling 1 and several adapter blocks, wherein the sling 1 is a flexible sling that wraps around the irregularly shaped projectile; the sling 1 has openings at both ends for engaging with the hooks of the lifting equipment; several adapter blocks are provided in the area where the irregularly shaped projectile 6 contacts the sling 1; each protruding structure is provided with two adapter blocks, which are located on both sides of the protruding structure along the circumference of the irregularly shaped projectile.

[0051] In this example, there is a protruding structure on each side of the outer surface of the irregularly shaped projectile, namely protruding structure 1 7 and protruding structure 2 8; based on this, each lifting unit is equipped with four adapter blocks, namely adapter block 1 2, adapter block 2 3, adapter block 3 4 and adapter block 4 5.

[0052] The sling 1 is a flat strip structure with an opening at each end for engaging with the hook. To facilitate hook lifting, the opening size is larger than the hook size of the lifting equipment. The length of the sling 1 is greater than the circumference of the irregularly shaped whole shell 6. The sling 1 is made of flexible material. When it comes into contact with the irregularly shaped whole shell 6 and each adapter block (i.e., adapter block 1 2, adapter block 2 3, adapter block 3 4, and adapter block 4 5) under external force, the contact surfaces are completely fitted together, thereby allowing the external force to be applied evenly to the contact area.

[0053] Each adapter block has the same structural dimensions and mass; the adapter block is an arc-shaped block with concentric inner and outer arc surfaces. The radius of the inner arc surface of the adapter block is the same as the radius of the irregularly shaped projectile 6, so that the inner arc surface of the adapter block can fit against the outer surface of the irregularly shaped projectile 6; the radius of the outer arc surface of the adapter block is greater than the maximum radial dimension of the protruding structure 7 and the protruding structure 8 (that is, the adapter block protrudes radially from the protruding structure 7 and the protruding structure 8), thereby preventing the protruding structure 7 and the protruding structure 8 from contacting the sling 1.

[0054] The two end faces of the adapter block along the 6-axis of the irregularly shaped integral material are the front face and the rear face, respectively. The front face and the rear face of the adapter block are parallel, and the distance between the front and rear faces of the adapter block is the width (e.g., ...). Figure 2 and Figure 3 L2) is greater than the width of sling 1 by (e.g.) Figure 2 and Figure 3 L1); The adapter block is made of flexible material. When it comes into contact with the irregularly shaped elastic 6 and the sling 1 under the action of external force, the contact surface fits completely, so that the external force can be applied evenly to the contact area.

[0055] The adapter block has rounded corners at the intersections of the two sides of the irregularly shaped bullet with the inner and outer arc surfaces.

[0056] Several adapter blocks are installed between the lifting sling 1 and the irregularly shaped projectile 6, with one adapter block arranged on each side of the circumference of each protruding structure. The position of the adapter blocks between the lifting sling 1 and the irregularly shaped projectile 6 is adjustable along the circumference of the irregularly shaped projectile 6 (the position of each adapter block is manually adjusted before lifting).

[0057] When the irregular-shaped projectile lifting device includes an odd number of lifting units, one of the lifting units is located at the position of the vertical line 10 of the center of gravity of the irregular-shaped projectile 6 (let's call it the central lifting unit). The symmetry line of the lifting strap 1 of the central lifting unit coincides with the vertical line 10 of the center of gravity of the irregular-shaped projectile. The remaining lifting units are symmetrically arranged on both sides of the vertical line 10 of the center of gravity of the irregular-shaped projectile 6 along the axial direction of the projectile.

[0058] When the irregularly shaped whole-project lifting device includes an even number of lifting units, the even number of lifting units are symmetrically arranged on both sides of the vertical line 10 of the center of mass of the irregularly shaped whole-project along the axial direction of the whole-project.

[0059] As an example, this irregularly shaped whole-unit lifting device is a single-point lifting device, such as... Figure 2 As shown, the irregularly shaped projectile lifting device includes a lifting unit located at the position of the vertical line 10 of the center of gravity of the irregularly shaped projectile 6, which lies within the central symmetry plane of the sling 1. Adapter blocks 1 (2) and 3 (4) are symmetrical along the vertical line 10 of the center of gravity of the irregularly shaped projectile 6 (i.e., the vertical line passing through the center of gravity 9 of the irregularly shaped projectile), and adapter blocks 2 (3) and 4 (5) are also symmetrical along the vertical line 10 of the center of gravity of the irregularly shaped projectile 6. For a single-point lifting device, the rated load of the sling 1 is greater than twice the weight of the irregularly shaped projectile 6.

[0060] As an example, this irregularly shaped integral bomb lifting device is a dual-point lifting device, such as... Figure 3 As shown, the irregularly shaped projectile lifting device includes two lifting units, which are symmetrically arranged on both sides of the vertical line 10 of the center of gravity of the irregularly shaped projectile 6 along the axial direction of the projectile. In each lifting unit, adapter block 1 2 and adapter block 3 4 are symmetrical along the symmetry line of the lifting strap 1, and adapter block 2 3 and adapter block 4 5 are symmetrical along the symmetry line of the lifting strap 1. For the dual-point lifting device, the rated load of the lifting strap 1 is greater than twice the weight of the irregularly shaped projectile 6.

[0061] Example 2:

[0062] This embodiment provides a single-point lifting method for irregularly shaped projectiles, wherein the lifting device used in this method has only one lifting unit as described in Embodiment 1 above; it includes the following steps:

[0063] S1. Initially, the longitudinal axis of the irregularly shaped projectile 6 is placed horizontally on the tooling or bracket. Start the hoisting equipment, adjust the hook of the hoisting equipment to be directly above the center of mass 9 of the irregularly shaped projectile, and lower the hook.

[0064] S2. Hang one end of the sling 1 on the hook of the hoisting equipment through one opening. Then, hang the other end of the sling 1 on the hook of the hoisting equipment after passing under the irregularly shaped whole 6. At this time, the sling 1 and the irregularly shaped whole 6 have a gap between the sling 1 and the irregularly shaped whole 6, which is used to insert the adapter block.

[0065] S3. Install adapter blocks between the irregularly shaped projectile 6 and the sling 1. Place one adapter block on each side of each protruding structure along the circumference of the projectile. The inner arc surface of each adapter block contacts the circumference of the irregularly shaped projectile 6, and the outer arc surface of the adapter block contacts or leaves a gap with the sling 1. In this example, adapter block 1 2 and adapter block 2 3 are located on both sides of protruding structure 1 7 along the circumference of the irregularly shaped projectile 6, and adapter block 3 4 and adapter block 4 5 are located on both sides of protruding structure 2 8 along the circumference of the irregularly shaped projectile 6.

[0066] S4. Adjust the position of the adapter blocks along the circumference of the irregularly shaped projectile 6 so that the adapter blocks placed on both sides of the protruding structure have gaps with the protruding structure, and the adapter blocks placed on both sides of each protruding structure are symmetrical with respect to the central axis of the protruding structure; the adapter blocks placed on one side of the vertical line of the projectile's center of mass and the adapter blocks placed on the other side of the vertical line of the projectile's center of mass are symmetrical with respect to the vertical line 10 of the projectile's center of mass.

[0067] Therefore, in this example, by adjusting to leave gaps between adapter block 1 (2), adapter block 2 (3) and protruding structure 1 (7), and between adapter block 3 (4), adapter block 4 (5) and protruding structure 2 (8), the angle between the central axis of adapter block 1 (2) and the central axis of protruding structure 1 (7) is D, the angle between the central axis of adapter block 2 (3) and the central axis of protruding structure 1 (7) is C, the angle between the central axis of adapter block 3 (4) and the central axis of protruding structure 2 (8) is B, and the angle between the central axis of adapter block 4 (5) and the central axis of protruding structure 2 (8) is A; C and D are equal, A and B are equal, the angle between adapter block 2 (3) and the vertical line 10 of the irregular elastic center of mass 9 is E, and the angle between adapter block 4 (5) and the vertical line 10 of the irregular elastic center of mass 9 is F, E and F are equal.

[0068] S5. Adjust the position of the adapter block along the longitudinal direction of the irregularly shaped projectile 6, so that the front and rear faces of the adapter block are on the front and rear sides of the vertical line 10 of the center of mass of the irregularly shaped projectile, respectively. The distance from the front face of the adapter block to the vertical line 10 of the center of mass of the irregularly shaped projectile is equal to the distance from the rear face of the adapter block to the vertical line 10 of the center of mass of the irregularly shaped projectile. Figure 2 As shown;

[0069] S6. Keep the position of the adapter block unchanged (before the sling 1 contacts the adapter block, ensure the position of the adapter block remains unchanged by means of tooling or manual means), slowly raise the hook until the sling 1 just contacts the outer arc surface of the adapter block. During the raising of the hook, keep the vertical line 10 of the center of gravity of the irregular whole projectile within the symmetrical plane of the center of the sling 1; until the irregular whole projectile 6 is separated from the tooling or bracket, continue to raise until the irregular whole projectile 6 leaves a sufficient safe distance from the tooling or bracket, and complete the lifting of the irregular whole projectile 6.

[0070] Example 3:

[0071] This embodiment provides a method for lifting irregularly shaped projectiles using a dual-lifting-point system. Specifically, the lifting device used in this method has only two lifting units as described in Embodiment 1 above. The method includes the following steps:

[0072] S1. Adjust the irregularly shaped projectile 6 so that its longitudinal axis is horizontal. Start two hoisting devices, each with one hook, or start both hooks of one hoisting device. Adjust the first hook of the hoisting device to be directly above the center of mass 9 of the irregularly shaped projectile, and move it forward a distance L3 in a direction parallel to the longitudinal axis of the irregularly shaped projectile 6. Adjust the second hook of the hoisting device to be directly above the center of mass 9 of the irregularly shaped projectile, and move it backward a distance L4 in a direction parallel to the longitudinal axis of the irregularly shaped projectile 6. When L3 and L4 are equal, lower the first hook and the second hook.

[0073] S2. Hang one end of one of the slings 1 on the first hook of the hoisting equipment through the opening. The other end of the sling 1 passes under the irregularly shaped whole projectile 6 and hangs on the first hook of the hoisting equipment through the opening at that end. At this time, the vertical line 10 of the center of gravity of the irregularly shaped whole projectile is parallel to the center symmetry plane of the sling. There is a gap between the sling 1 and the irregularly shaped whole projectile 6 for inserting the adapter block.

[0074] S3. Using the same method as above, hang the opening at one end of another sling 1 on the second hook of the hoisting equipment. The other end of the sling 1 passes under the irregularly shaped projectile 6 and hangs on the second hook of the hoisting equipment through the opening at that end. At this time, the vertical line 10 of the center of gravity of the irregularly shaped projectile is parallel to the symmetrical plane of the center of the sling. There is a gap between the sling 1 and the irregularly shaped projectile 6 for inserting the adapter block.

[0075] like Figure 3 As shown, the distance from the vertical line 10 of the center of mass of the irregularly shaped projectile to the central symmetry plane of the left sling 1 is L3, and the distance to the central symmetry plane of the right sling 1 is L4. L3 and L4 are equal.

[0076] S4. Install adapter blocks between the irregularly shaped projectile 6 and the two slings 1 respectively. Place adapter blocks 1 2 and 2 3 on both sides of the protruding structure 1 7 along the circumference of the irregularly shaped projectile 6. Place adapter blocks 3 4 and 4 5 on both sides of the protruding structure 2 8 along the circumference of the irregularly shaped projectile 6. The inner arc surface of the adapter blocks contacts the circular surface of the irregularly shaped projectile 6, and the outer arc surface of the adapter blocks contacts the slings 1 or leaves a gap.

[0077] S5. Adjust the position of the adapter block between the irregularly shaped projectile 6 and one of the slings 1 along the circumference of the irregularly shaped projectile 6. There is a gap between adapter block 1 2, adapter block 2 3 and protruding structure 1 7. There is a gap between adapter block 3 4, adapter block 4 5 and protruding structure 2 8. The angle between the central axis of adapter block 1 2 and the central axis of protruding structure 1 7 is D. The angle between the central axis of adapter block 2 3 and the central axis of protruding structure 1 7 is C. The angle between the central axis of adapter block 3 4 and the central axis of protruding structure 2 8 is B. The angle between the central axis of adapter block 4 5 and the central axis of protruding structure 2 8 is A. C and D are equal. A and B are equal. The angle between adapter block 2 3 and the vertical line 10 of the center of mass 9 of the irregularly shaped projectile is E. The angle between adapter block 4 5 and the vertical line 10 of the center of mass 9 of the irregularly shaped projectile is F. E and F are equal.

[0078] S6. Using the same method as above, adjust the position of the adapter block between the irregularly shaped projectile 6 and the other sling 1 along the circumference: that is, the adapter block placed on both sides of each protruding structure leaves a gap with the protruding structure. The gaps are equal to the corresponding gaps in step S5. The two adapter blocks placed on both sides of each protruding structure are symmetrical with respect to the central axis of the protruding structure. The adapter blocks placed on one side of the vertical line of the projectile's center of mass are symmetrical with respect to the vertical line of the projectile's center of mass and the adapter blocks placed on the other side of the vertical line of the projectile's center of mass.

[0079] S7. Adjust the position of the adapter block between the irregularly shaped projectile 6 and one of the slings 1 along the longitudinal direction of the irregularly shaped projectile 6, so that the front end face and the rear end face of the adapter block are on the front and rear sides of the central symmetry plane of the sling 1, respectively, and the distance from the front end face of the adapter block to the central symmetry plane of the sling 1 is equal to the distance from the rear end face of the adapter block to the central symmetry plane of the sling 1.

[0080] S8. Using the same method as above, adjust the position of the adapter block between the irregularly shaped projectile 6 and the other sling 1 along the longitudinal direction of the irregularly shaped projectile 6.

[0081] S9. Keep the positions of the two sets of adapter blocks unchanged, slowly raise the first hook and the second hook until the sling 1 in the two lifting units just contacts the outer arc surface of the corresponding adapter block. During the raising of the hook, keep the vertical line 10 of the irregular whole elastic center of mass parallel to the central symmetry plane of the two slings 1 respectively, and L3 and L4 are equal.

[0082] S10. Keep the positions of the two sets of adapter blocks unchanged, and continue to slowly raise the hook until the irregular whole projectile 6 is separated from the tooling or bracket. Continue to raise the hook until the irregular whole projectile 6 and the tooling or bracket have a sufficient safe distance. During the raising of the hook, keep the vertical line 10 of the center of gravity of the irregular whole projectile parallel to the center symmetry plane of the two slings 1 respectively, and L3 and L4 are equal. The lifting of the irregular whole projectile 6 is completed.

[0083] 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 irregularly shaped whole projectiles, characterized in that, An irregularly shaped projectile lifting tool is used for lifting irregularly shaped projectiles with protruding structures on both sides of the outer surface; The lifting device is a single-point lifting device, comprising: a lifting unit; The lifting unit includes: a sling (1) and several adapter blocks; the sling (1) is a flexible sling that wraps around the irregularly shaped elastic; the sling (1) has openings at both ends for engaging with a hook; A plurality of adapter blocks are provided between the irregularly shaped projectile (6) and the sling (1); one adapter block is provided on each side of each of the protruding structures in the circumferential direction; The lifting unit is located at the position of the vertical line (10) of the center of gravity of the irregular whole projectile (6), and the vertical line (10) of the center of gravity of the irregular whole projectile is within the central symmetry plane of the sling (1); the rated load of the sling (1) is greater than twice the weight of the irregular whole projectile (6); The lifting method includes the following steps: S1: Initially, the longitudinal axis of the irregular whole projectile (6) is placed horizontally on the tooling or bracket. Start the hoisting equipment, adjust the hook of the hoisting equipment to be directly above the center of mass (9) of the irregular whole projectile, and lower the hook. S2: Hang the opening at one end of the sling (1) on the hook of the hoisting equipment, and hang the other end on the hook of the hoisting equipment after passing under the irregular whole projectile (6). At this time, the vertical line (10) of the center of mass of the irregular whole projectile is in the central symmetry plane of the sling (1). There is a gap between the sling (1) and the irregular whole projectile (6) for inserting the adapter block. S3: Install an adapter block between the irregular whole projectile (6) and the sling (1). Place an adapter block on each side of each protruding structure along the circumference of the whole projectile. The inner arc surface of each adapter block contacts the circumference of the irregular whole projectile (6), and the outer arc surface of the adapter block contacts the sling (1) or leaves a gap. S4: Adjust the position of the adapter block along the circumference of the irregular whole projectile (6) so that the adapter block placed on both sides of the protruding structure has a gap with the protruding structure, and the adapter block placed on both sides of each protruding structure is symmetrical with respect to the central axis of the protruding structure; the adapter block placed on one side of the vertical line of the center of mass of the whole projectile is symmetrical with respect to the vertical line of the center of mass of the whole projectile (10) and the adapter block placed on the other side of the vertical line of the center of mass of the whole projectile. S5: Adjust the position of the adapter block along the longitudinal direction of the irregularly shaped projectile (6) so that the front end face and the rear end face of the adapter block are on the front and rear sides of the vertical line (10) of the center of mass of the irregularly shaped projectile, respectively, and the distance from the front end face of the adapter block to the vertical line (10) of the center of mass of the irregularly shaped projectile is equal to the distance from the rear end face to the vertical line (10) of the center of mass of the irregularly shaped projectile. S6: Keep the position of the adapter block unchanged, raise the hook until the sling (1) just contacts the outer arc surface of the adapter block. During the raising of the hook, keep the vertical line (10) of the center of gravity of the irregular whole projectile in the center symmetry plane of the sling (1); until the irregular whole projectile (6) is separated from the fixture or bracket, continue to raise until the irregular whole projectile (6) reaches the set safe distance between the fixture or bracket, and complete the lifting of the irregular whole projectile (6).

2. The method for lifting irregularly shaped whole bullets according to claim 1, characterized in that, The adapter block is an arc-shaped block, with its outer arc surface and inner arc surface concentric; the width of the adapter block is greater than the width of the sling (1).

3. The method for lifting irregularly shaped whole bullets according to claim 1 or 2, characterized in that, The adapter block is made of flexible material.

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