Tubular propellant powder assembly tool

Abstract

The utility model provides a tubular propellant powder assembly tool which solves the problem that potential safety hazards are caused by friction in the tubular propellant powder assembly process. The tubular propellant powder assembly tool comprises a positioning mechanism and a rotating mechanism, the positioning mechanism comprises a mandrel, the left end of the mandrel is a free end, the right end of the mandrel penetrates through a guide plug and is rotationally connected with a limiting end cover, the limiting end cover is arranged in the rotating mechanism, and the rotating mechanism is detachably connected with a stabilizing device of propellant powder. The rotating mechanism drives the stabilizing device to rotate. When the stabilizing device and the shell are screwed and fixed, it is guaranteed that the propellant does not rotate, and potential safety hazards are avoided.

Description

Technical Field

[0001] This utility model relates to the field of propellant assembly technology, and in particular to a tubular propellant assembly tooling. Background Technology

[0002] The tubular propellant comprises a casing, a stabilizing device, and a propellant body. The left end of the stabilizing device has an external thread, and the right end of the casing has an internal thread. During assembly, the propellant body is installed inside the casing, and then the left end of the stabilizing device is screwed into the right end of the casing using the threads. During the screwing of the left end face of the stabilizing device into the casing, the propellant body can be easily squeezed, damaging its matrix and causing it to malfunction. Furthermore, there is a possibility that the propellant body and the stabilizing device rotate together, causing frictional heat in the propellant and potentially triggering its activation, posing a safety hazard. Utility Model Content

[0003] This invention proposes a tubular propellant assembly tooling, which solves the problem of safety hazards caused by friction during the assembly of tubular propellants.

[0004] The technical solution of this utility model is implemented as follows: a tubular propellant assembly tooling includes a positioning mechanism and a rotating mechanism. The positioning mechanism includes a mandrel, the left end of which is a free end, and the right end of which passes through a guide plug and is rotatably connected to a limiting end cap. The limiting end cap is placed inside the rotating mechanism. The rotating mechanism is detachably connected to the propellant stabilizing device, and the rotating mechanism drives the stabilizing device to rotate.

[0005] Furthermore, the rotating mechanism includes a sleeve, a protrusion at the right end of the sleeve, a limiting end cap placed inside the sleeve and abutting against the protrusion, a radially sliding elastic locking pin on the outside of the sleeve, and a wrench hole on the stabilizing device that cooperates with the elastic locking pin.

[0006] Furthermore, the guide plug is a conical plug, with the outer diameter of the left end of the conical plug being smaller than that of the right end, and the right end of the stabilizing device is provided with a conical hole that mates with the guide plug.

[0007] Furthermore, a positioning groove is provided on the left end of the limiting end cap. The positioning groove is an annular groove, and the right end of the stabilizing device is placed in the positioning groove.

[0008] Furthermore, a locking nut is symmetrically screwed onto the outer side of the sleeve. The locking nut is arranged radially along the sleeve. A tightening nut is screwed onto the outer side of the locking nut. The outer end of the elastic locking pin is connected to the pull head, and the inner end slides through the tightening nut and the locking nut in sequence and is placed inside the sleeve.

[0009] Furthermore, the elastic locking pin includes a pin shaft, a limit block is provided on the pin shaft inside the locking nut, the outer diameter of the limit block is larger than the pin shaft, a sliding washer is fitted on the pin shaft inside the tightening nut, and a spring is provided between the washer and the limit block.

[0010] Furthermore, a tightening groove is provided circumferentially on the outer side of the sleeve.

[0011] Furthermore, the outer surface of the end cap is knurled.

[0012] Furthermore, the inner end of the elastic locking pin is spherical.

[0013] The beneficial effects of this utility model are:

[0014] This utility model's tubular propellant assembly fixture, when assembling the stabilizing device and the housing, uses a guide plug and a limiting end cap to position the stabilizing device, and a mandrel to press against the end face of the propellant body to prevent the stabilizing device from contacting the propellant body when screwed into the housing. The limiting end cap is rotatably connected to the mandrel to prevent the rotating mechanism from rotating the mandrel when it drives the stabilizing device to rotate. Through the cooperation of the above structures, when the stabilizing device is tightened and fixed to the housing, the propellant body is guaranteed not to rotate, thus solving the safety hazard.

[0015] The rotating mechanism of this utility model uses an elastic locking pin and a wrench hole on the stabilizing device to achieve the disassembly and connection of the rotating mechanism and the housing of the stabilizing device, which is simple and convenient to operate. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the rotating mechanism;

[0019] Figure 3 This is a schematic diagram of the positioning mechanism.

[0020] 1. Mandrel 2. Guide plug 3. Limiting end cap 4. Rolling bearing 5. Housing 6. Propellant 7. Stabilizing device 8. Sleeve 9. Protrusion 10. Pull head 11. Locking screw 12. Tightening screw 13. Elastic locking pin 14. Pin 15. Limiting block 16. Washer 17. Spring 18. Tightening groove 19. Positioning groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] like Figure 1 As shown, a tubular propellant assembly fixture includes a positioning mechanism and a rotating mechanism. The positioning mechanism includes a mandrel 1, the left end of which is a free end. The right end of the mandrel 1 is sequentially provided with a guide plug 2 and a limiting end cap 3 on the same axis. The right end of the mandrel 1 passes through the guide plug 2. The limiting end cap 3 is rotatably connected to the mandrel 1 through a rolling bearing 4. The limiting end cap 3 is placed inside the rotating mechanism. The rotating mechanism is detachably connected to the propellant stabilizing device 7. The rotating mechanism drives the stabilizing device 7 to rotate.

[0024] The tubular propellant assembly tooling is used as follows: The tubular propellant includes a shell 5, a propellant body 6, and a stabilizing device 7. The right end of the shell 5 is provided with an internal thread, and the left end of the stabilizing device 7 is provided with an external thread. The left end of the mandrel 1 is passed through the stabilizing device 7, and the guide plug 2 is inserted into the right end of the stabilizing device 7. The right end of the stabilizing device 7 abuts against the left side of the end cap. The limiting end cap 3 is placed in the rotating mechanism, and the rotating mechanism is connected to the stabilizing device 7.

[0025] Place the propellant 6 inside the housing 5 and fix the housing 5 in place. Then, abut the left end of the spindle 1 against the propellant 6 and rotate the rotating mechanism. The rotating mechanism drives the stabilizing device 7 to rotate. The left end of the stabilizing device 7 is threaded into the housing 5. Finally, disassemble the rotating mechanism and pull out the positioning mechanism.

[0026] Example 2

[0027] This embodiment is basically the same as Embodiment 1, except that, as Figure 1 and 2 As shown, the rotating mechanism includes a sleeve 8, with a protrusion 9 fixed to the right end of the sleeve 8. A limiting end cap 3 is placed inside the sleeve 8, with the right end of the limiting end cap 3 abutting against the protrusion 9. A locking sleeve 11 is symmetrically screwed onto the outer side of the sleeve 8. The locking sleeve 11 is arranged radially along the sleeve 8. A tightening sleeve 12 is screwed onto the outer side of the locking sleeve 11. The outer end of the elastic locking pin 13 is connected to the pull head 10 through a limiting pin. The inner end of the elastic locking pin 13 slides through the tightening sleeve 12 and the locking sleeve 11 in sequence and is placed inside the sleeve 8. A wrench hole that mates with the elastic locking pin 13 is provided on the stabilizing device 7.

[0028] Pull the pull head 10 outward, causing the elastic locking pin 13 to move outward and retract into the locking sleeve 11, assembling the stabilizing device 7 and the positioning mechanism. The sleeve 8 is placed outside the limiting end cap 3 and the stabilizing device 7, with the limiting end cap 3 abutting against the protrusion 9. Release the pull head 10, and the elastic locking pin 13 moves inward and inserts into the wrench hole. Rotate the sleeve 8, which, through the elastic locking pin 13, causes the stabilizing device 7 to rotate and move to the left. The right end of the stabilizing device 7 is threadedly connected to the left end of the housing 5. At the same time, the protrusion 9 pushes the limiting end cap 3, the guide plug 2, and the spindle 1 to move to the left, pushing the propellant 6 to move to the left, thus preventing the propellant 6 from being squeezed during the tightening of the stabilizing device 7. Because the limiting end cap 3 is rotatably connected to the spindle 1, it will not drive the spindle 1 to rotate, thereby preventing the propellant 6 from rotating.

[0029] The elastic locking pin 13 includes a pin shaft 14. A limit block 15 is fixed on the pin shaft 14 inside the locking sleeving 11. The outer diameter of the limit block 15 is larger than that of the pin shaft 14. A sliding washer 16 is fitted on the pin shaft 14 inside the tightening sleeving 12. A spring 17 is provided between the washer 16 and the limit block 15. The spring 17 is fitted on the pin shaft 14. The outer end of the pin shaft 14 is connected to the pull head 10. When the pull head 10 drives the pin shaft 14 to move radially outward, the spring 17 is compressed. When the pull head 10 is released, the spring 17 extends, driving the pin shaft 14 to move inward.

[0030] A tightening groove 18 is provided on the outer side of the sleeve 8 along the circumferential direction. The tightening groove 18 facilitates connection with the matching tightener, and the tightener drives the sleeve 8 to rotate.

[0031] The outer surface of the end cap is knurled, which facilitates the subsequent removal of the positioning mechanism.

[0032] The inner end of the elastic locking pin 13 is spherical, which facilitates its insertion into the wrench hole.

[0033] Example 3

[0034] This embodiment is basically the same as embodiment 1 or 2, except that: Figure 1 and 3 As shown, the guide plug 2 is a conical plug, with the outer diameter of the left end of the conical plug being smaller than that of the right end. The right end of the stabilizing device 7 is provided with a conical hole that mates with the guide plug 2. The conical structure facilitates the insertion of the guide plug 2 into the stabilizing device 7, enabling better positioning of the stabilizing device 7.

[0035] The left end of the limiting end cap 3 is provided with a positioning groove 19, which is an annular groove. The right end of the stabilizing device 7 is placed in the positioning groove 19 to limit the right end of the stabilizing device 7.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tubular propellant assembly tooling, characterized in that: It includes a positioning mechanism and a rotating mechanism. The positioning mechanism includes a mandrel with a free end on the left and a right end that passes through a guide plug and is rotatably connected to a limiting end cap. The limiting end cap is placed inside the rotating mechanism. The rotating mechanism is detachably connected to the propellant stabilizing device and drives the stabilizing device to rotate.

2. The tubular propellant assembly tooling according to claim 1, characterized in that: The rotating mechanism includes a sleeve with a protrusion at the right end. A limiting end cap is placed inside the sleeve and abuts against the protrusion. A radially sliding elastic locking pin is provided on the outside of the sleeve. A wrench hole that mates with the elastic locking pin is provided on the stabilizing device.

3. A tubular propellant assembly tooling according to claim 1 or 2, characterized in that: The guide plug is a conical plug, with the outer diameter of the left end of the conical plug being smaller than that of the right end. The right end of the stabilizing device is provided with a conical hole that mates with the guide plug.

4. A tubular propellant assembly tooling according to claim 1 or 2, characterized in that: The left end of the limiting end cap is provided with a positioning groove, which is an annular groove, and the right end of the stabilizing device is placed in the positioning groove.

5. The tubular propellant assembly tooling according to claim 2, characterized in that: A locking sleeve is symmetrically screwed onto the outer side of the sleeve. The locking sleeve is arranged radially along the sleeve. A tightening sleeve is screwed onto the outer side of the locking sleeve. The outer end of the elastic locking pin is connected to the pull head, and the inner end slides through the tightening sleeve and the locking sleeve in sequence and is placed inside the sleeve.

6. The tubular propellant assembly tooling according to claim 5, characterized in that: The elastic locking pin includes a pin shaft, a limit block is provided on the pin shaft inside the locking sleeving, the outer diameter of the limit block is larger than the pin shaft, a sliding washer is fitted on the pin shaft inside the tightening sleeving, and a spring is provided between the washer and the limit block.

7. The tubular propellant assembly tooling according to claim 1, characterized in that: The outer side of the sleeve is provided with a tightening groove along the circumference.

8. The tubular propellant assembly tooling according to claim 1, characterized in that: The outer surface of the end cap is knurled.

9. A tubular propellant assembly tooling according to claim 2 or 5, characterized in that: The inner end of the resilient locking pin is spherical.

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