Auxiliary lifting appliance for cannonball body

Abstract

The utility model is applicable to the technical field of lifting appliances, and provides a cannonball body auxiliary lifting appliance, which comprises a support, three radial hemispherical holes, a lifting device and a lifting device, the size of the lower end of the support is matched with the size of an opening inner hole of a cannonball body, and the lower end of the support is uniformly provided with three radial hemispherical holes; the number of the positioning steel balls is three, the positioning steel balls are movably installed in the radial semispherical holes, in a natural state, the positioning steel balls slide inwards, and the outer surfaces of the positioning steel balls do not exceed the outer surface of the lower end of the support; the conical hanging rod is movably installed in the support, the positioning steel balls are hung between the support and the conical hanging rod, the conical hanging rod comprises an extrusion part, and when the conical hanging rod moves upwards, the extrusion part ejects the three positioning steel balls out, and the three positioning steel balls abut against and are tensioned in an inner cavity of the projectile body and are used for fixedly clamping the projectile body; and the lifting ring nut is in threaded connection with the top of the conical lifting rod and is connected with a hoisting machinery lifting hook hanging buckle. The internal expansion self-locking device can reduce the labor intensity of personnel, can automatically finish internal expansion self-locking along with the lifting of the lifting hook of the lifting machine, and is simple, safe and reliable to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of slings, and in particular relates to an auxiliary sling for a shell body. Background Art

[0002] A hoist is a device used in lifting machinery to lift heavy objects. When processing large-caliber shells on a vertical lathe, due to the heavy weight, irregular shape, and small inner hole of the shells, the shell body must be installed with the mouth facing upwards and then installed vertically into the limited processing fixture. Therefore, there cannot be other interfering auxiliary tools in the outer space of the shell body. The standard hoist in the lifting process cannot meet its lifting requirements, and there is no suitable auxiliary hoist on the market.

[0003] In the prior art, the clamping can only be done manually, which results in heavy workload, low operating efficiency and certain safety hazards. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide an auxiliary hanging device for a shell body, aiming to solve the problems raised in the above-mentioned background technology.

[0005] The utility model is implemented in this way: an auxiliary hanging device for a shell body comprises:

[0006] A support, wherein the outer circle size of the lower end of the support matches the inner hole size of the mouth of the projectile, and the lower end of the support is evenly provided with three radial hemispherical holes;

[0007] Positioning steel balls, three of which are movably mounted in radial hemispherical holes. In a natural state, the positioning steel balls slide inwards, and the outer surface of the positioning steel balls does not exceed the outer surface of the lower end of the support.

[0008] A conical suspension rod is movably mounted in the support, the positioning steel balls are suspended between the support and the conical suspension rod, and the conical suspension rod includes an extrusion portion. When the conical suspension rod moves upward, the extrusion portion pushes out three positioning steel balls, and the three positioning steel balls are tightened against the inner cavity of the projectile body to fix and clamp the projectile body;

[0009] The eye nut is threadedly connected to the top of the conical suspension rod and is connected to the hook buckle of the lifting machinery.

[0010] Preferably, there is a gap of 1-2 mm between the outer circle of the lower end of the support and the inner hole of the mouth of the elastic body.

[0011] Preferably, the center of the radial hemispherical hole is 0.3-0.5 mm inside the outer circle of the lower end of the support to prevent the positioning steel ball from falling out;

[0012] The radial hemispherical hole is provided with an inner inclination angle, which is used to drive the positioning steel ball to slide inward under the action of gravity in a natural state.

[0013] Preferably, the tapered boom comprises:

[0014] A small diameter portion, the small diameter portion is used to prevent the positioning steel ball from completely falling off the radial hemispherical hole, while ensuring that the outer surface of the positioning steel ball does not exceed the outer surface of the lower end of the support in a natural state;

[0015] A large diameter portion, the large diameter portion slidingly cooperates with the inner hole of the support for guiding;

[0016] The extrusion portion is connected between the small diameter portion and the large diameter portion.

[0017] Preferably, the extrusion portion is a conical surface structure.

[0018] The shell body auxiliary lifting device provided by the embodiment of the utility model can improve the working efficiency, reduce the labor intensity of personnel, and automatically complete the internal expansion and self-locking by mechanical gravity as the crane hook is raised and lowered. The use is simple, safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of an auxiliary hanging device for a shell body provided by an embodiment of the utility model;

[0020] Figure 2 An exploded view of an auxiliary hanging device for a shell body provided by an embodiment of the utility model;

[0021] Figure 3 A schematic diagram of the structure of a shell body auxiliary lifting device in working state provided by an embodiment of the utility model;

[0022] Figure 4 A half-section diagram of a shell body auxiliary lifting device in working state provided by an embodiment of the utility model;

[0023] Figure 5 for Figure 4 Schematic diagram of the local enlarged structure.

[0024] In the attached figure: 1-projectile body; 2-support; 3-conical suspension rod; 4-eye nut; 5-positioning steel ball. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0027] like Figures 1 to 3As shown, a structural diagram of a shell body auxiliary lifting device provided by an embodiment of the utility model includes:

[0028] A support 2, wherein the outer circle size of the lower end of the support 2 matches the inner hole size of the mouth of the projectile 1, and three radial hemispherical holes are evenly distributed at the lower end of the support 2;

[0029] Positioning steel balls 5, three of which are movably mounted in radial hemispherical holes. In a natural state, the positioning steel balls 5 slide inwards, and the outer surface of the positioning steel balls 5 does not exceed the outer surface of the lower end of the support 2;

[0030] The conical suspension rod 3 is movably mounted in the support 2, and the positioning steel balls 5 are suspended between the support 2 and the conical suspension rod 3. The conical suspension rod 3 includes an extrusion portion. When the conical suspension rod 3 moves upward, the extrusion portion pushes out the three positioning steel balls 5. The three positioning steel balls 5 are tightened against the inner cavity of the elastic body 1 to fix and clamp the elastic body 1.

[0031] The eye nut 4 is threadedly connected to the top of the conical suspension rod 3 and is connected to the hook buckle of the lifting machinery.

[0032] In one embodiment of the present invention, the auxiliary lifting device for the shell body is provided with a support 2, a conical suspension rod 3 and a positioning steel ball 5 to solve the problems raised by the prior art. The conical suspension rod 3 is slidably installed in the support 2, and the eye nut 4 is hooked with the lifting machinery. When in use, the lower end of the support 2 is first installed into the mouth of the shell body 1. When the lifting machinery is started to drive the conical suspension rod 3 to rise through the eye nut 4, the extrusion part of the conical suspension rod 3 squeezes and pushes the positioning steel ball 5 to roll outward, resists and tightens in the inner cavity of the shell body 1, and then clamps and fixes the shell body 1. The shell body 1 can be moved and installed in the processing fixture, and then the lifting machinery is started to descend. The conical suspension rod 3 slides down in the support 2 without being subjected to force, and the extrusion part no longer applies pressure to the positioning steel ball 5. The positioning steel ball 5 slides into the radial hemispherical hole and separates from the shell body 1, and then the support 2 can be taken out from the shell body 1.

[0033] Three positioning steel balls 5 are evenly suspended between the conical suspension rod 3 and the support 2. The positioning steel balls 5 are controlled to roll through the force of the support 2 or the conical suspension rod 3, tightened and hooked on the inner cavity of the projectile 1 to complete the lifting, otherwise loosened and taken out. The size of the positioning steel balls 5 can be selected according to the size of the arc of the intersection point of the inner cavity of the projectile 1.

[0034] Specifically, there is a gap of 1-2 mm between the outer circle of the lower end of the support 2 and the inner hole of the mouth of the body 1 .

[0035] The outer circle of the upper end of the support 2 is a handle, which is of moderate size and can be easily held in hand. There is a gap of 1-2mm between the outer circle of the lower end and the inner hole of the mouth of the projectile 1, which is convenient for the support 2 to be placed in and taken out of the projectile 1.

[0036] like Figures 4 to 5 As shown, as another preferred embodiment of the utility model, the center position of the radial hemispherical hole is 0.3-0.5 mm inside the outer circle of the lower end of the support 2, which is used to prevent the positioning steel ball 5 from falling out;

[0037] The radial hemispherical hole is provided with an inner inclination angle, which is used to drive the positioning steel ball 5 to slide inward under the action of gravity in a natural state.

[0038] Three evenly distributed radial hemispherical holes are provided at appropriate positions on the outer circle of the lower end of the support 2. The outer diameter of the hemispherical holes is smaller than the diameter of 5, which controls the positioning steel ball 5 to prevent it from falling outward. The inner chamfer of the hemispherical holes facilitates the positioning steel ball 5 to fall inward due to its own weight. The support 2 has two axial inner holes that pass through the top and bottom ends of the support 2 to cooperate with the smooth axial sliding of the conical hanger rod 3.

[0039] like Figure 1 and Figure 3 As shown, as a preferred embodiment of the utility model, the conical suspension rod 3 includes:

[0040] A small diameter portion, the small diameter portion is used to prevent the positioning steel ball 5 from completely falling off the radial hemispherical hole, while ensuring that the outer surface of the positioning steel ball 5 does not exceed the outer surface of the lower end of the support 2 in a natural state;

[0041] A large diameter portion, the large diameter portion slidingly cooperates with the inner hole of the support 2 for guiding;

[0042] The extrusion portion is connected between the small diameter portion and the large diameter portion.

[0043] The size of the small diameter portion of the conical suspension rod 3 must ensure that the positioning steel ball 5 will not completely fall off the hemispherical hole of the support 2, and must not cause the outer side of the positioning steel ball 5 to exceed the outer circle of the lower end of the support 2. The large diameter portion of the lower end of the conical suspension rod 3 slides in conjunction with the inner hole of the support 2 to play a guiding role. The extrusion portion of the conical suspension rod 3 is to completely push out the three positioning steel balls 5 and relatively support them. The upper end of the conical suspension rod 3 is designed with a thread, which is screwed together with the internal threaded hole of the lifting ring nut 4. The length of the conical suspension rod 3 must ensure that when the conical suspension rod 3 moves downward, when the end face of the lifting ring nut 4 contacts the upper end face of the support 2, the large diameter portion of the lower end of the conical suspension rod 3 cannot fall off the inner hole of the support 2.

[0044] like Figures 1 to 3 As shown, as a preferred embodiment of the utility model, the extrusion portion is a conical surface structure.

[0045] In order to extrude the three positioning steel balls 5 at the same time, the extrusion portion may be a conical surface structure.

[0046] The operation steps of the shell body auxiliary lifting device are as follows:

[0047] When the operator holds the support 2 in the air, the conical suspension rod 3 slides downward in the hole of the support 2 under the action of gravity, and at the same time, the end face of the eye nut 4 of the connection 3 contacts the upper end face of the support 2 and stops. At this time, the auxiliary suspension device can be installed into the inner hole of the projectile 1 to ensure that the lower end face of the support 2 contacts the end face of the mouth of the projectile 1 (the distance from the lower end face of the support 2 to the center of the hemispherical hole must be greater than the effective length of the inner hole of the projectile 1);

[0048] The eye nut 4 is hooked on the universal lifting hook, and the hook is started to lift upward. At this time, the hook drives the conical suspension rod 3 to slide upward in the guide hole of the elastic body 1 through the eye nut 4. When it slides to a certain position, the extrusion part on the conical suspension rod 3 contacts the three evenly distributed positioning steel balls 5 at the same time, and pushes the positioning steel balls 5 to the hemispherical holes on the support 2 until the three evenly distributed positioning steel balls 5 extend out of the lower end outer circle of the support 2 and contact the inner cavity of the tensioning elastic body 1. At the same time, as the universal lifting hook rises, the elastic body 1 is subjected to downward force due to gravity, and the conical suspension rod 3 drives the positioning steel balls 5 to be subjected to upward force. At this time, the three evenly distributed positioning steel balls 5 will firmly hang the elastic body 1 to complete the lifting;

[0049] After the projectile 1 is moved and installed in the processing fixture, the universal lifting hook is started to move downward. The conical suspension rod 3 slides downward in the hole of the support 2 under the influence of gravity without being subjected to upward force. At the same time, the end face of the lifting ring nut 4 connected to the conical suspension rod 3 contacts the upper end face of the support 2 and stops. At this time, the positioning steel ball 5 also leaves the inner cavity of the projectile 1 under the influence of gravity and slides onto the small outer circle of the conical suspension rod 3. At the same time, the maximum outer side of the positioning steel ball 5 will not exceed the lower end outer circle of the support 2. At this time, the handle of the support 2 can be held to take the auxiliary sling out of the inner hole of the projectile 1.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A shell body auxiliary lifting device, characterized in that: include: A support (2), wherein the outer circle size of the lower end of the support (2) matches the inner hole size of the mouth of the projectile (1), and the lower end of the support (2) is evenly provided with three radial hemispherical holes; Positioning steel balls (5), three of which are movably mounted in radial hemispherical holes. In a natural state, the positioning steel balls (5) slide inwards, and the outer surface of the positioning steel balls (5) does not exceed the outer surface of the lower end of the support (2); A conical suspension rod (3) is movably mounted in the support (2), the positioning steel balls (5) are suspended between the support (2) and the conical suspension rod (3), and the conical suspension rod (3) comprises an extrusion portion. When the conical suspension rod (3) moves upward, the extrusion portion pushes out the three positioning steel balls (5), and the three positioning steel balls (5) are pressed against and tightened in the inner cavity of the elastic body (1) to fix and clamp the elastic body (1); The eye nut (4) is threadedly connected to the top of the conical suspension rod (3) and is connected to the hook buckle of the lifting machinery.

2. The shell body auxiliary lifting device according to claim 1, characterized in that: There is a gap of 1-2 mm between the outer circle of the lower end of the support (2) and the inner hole of the mouth of the body (1).

3. The auxiliary lifting device for artillery shells according to claim 1, characterized in that: The center of the radial hemispherical hole is located 0.3-0.5 mm inside the outer circle of the lower end of the support (2), so as to prevent the positioning steel ball (5) from falling out; The radial hemispherical hole is provided with an inner inclination angle, which is used to drive the positioning steel ball (5) to slide inwards under the action of gravity in a natural state.

4. The auxiliary lifting device for artillery shells according to claim 1, characterized in that: The conical suspension rod (3) comprises: A small diameter portion, the small diameter portion being used to prevent the positioning steel ball (5) from completely falling out of the radial hemispherical hole, while ensuring that the outer surface of the positioning steel ball (5) in a natural state does not exceed the outer surface of the lower end of the support (2); A large diameter portion, the large diameter portion being slidably matched with the inner hole of the support (2) for guiding; The extrusion portion is connected between the small diameter portion and the large diameter portion.

5. The shell body auxiliary lifting device according to claim 4, characterized in that: The extrusion portion is a conical surface structure.

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