Multifunctional primer dismounting device
By designing a multifunctional primer removal device, the problems of existing tools being complex and prone to damaging ammunition are solved. It provides a primer removal solution that is simple in structure and easy to operate, applicable to shells of different calibers, and improves the safety and efficiency of disassembly.
Patent Information
- Application Number
- CN202520641107.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-04-07
AI Technical Summary
In the existing technology, the disassembly tools for screw-in primers are complex in structure, large in size, and expensive. Simple wrenches are inefficient and unreliable, and can easily damage ammunition components.
A multifunctional primer removal device was designed, including a fastening component and a removal component. The fastening component secures the projectile through a worktable, a fixed projectile support, an adjustable projectile support, and a fastening projectile support. The removal component unscrews the primer through a removal sleeve and a removal head. The support legs and movable claws secure the tail of the projectile. The operating handle facilitates operation.
It features a simple structure and convenient operation, reduces mechanical damage to the shell, improves the safety and versatility of primer disassembly, and is suitable for shells of different calibers.
Smart Images

Figure CN223954793U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to ammunition production assembly, ammunition technical inspection, ammunition disassembly and destruction etc. BACKGROUND
[0002] Ammunition generally consists of five elements of fuze, projectile, launching charge, cartridge case and primer. The primer is mainly used for converting mechanical energy or electrical energy into heat energy to ignite the launching charge, and is a relatively sensitive element in the ammunition system. According to the assembly method, the primer can be divided into two categories: screw-in primer and press-in primer. For screw-in primer, it is convenient to disassemble and replace. Therefore, for medium and large caliber ammunition, the primer is generally screw-in primer.
[0003] At present, in the fields of ammunition production assembly, ammunition technical inspection, ammunition disassembly and destruction, etc., the assembly or disassembly of the primer is involved, for example, when technical inspection is performed on the stored ammunition, a certain number of ammunition is usually extracted from the ammunition to be inspected, and the primer is disassembled to facilitate detailed inspection of the technical state of the primer. For the production and assembly of ammunition, the military units responsible for production generally complete the operation, and such units are generally equipped with mechanized primer assembly lines, which have high operation efficiency, but the assembly tools required are complex in structure, large in size and high in cost. For the operation in the fields of ammunition technical inspection, ammunition disassembly and destruction, etc., units with corresponding qualifications generally complete the operation, and such units usually use simple wrenches to complete the disassembly of the primer. Although such simple wrenches can meet the operation requirements, the disassembly efficiency and reliability are not high, and the primer and other elements of the ammunition are easily mechanically damaged. Utility model content
[0004] In view of the above problems, a multifunctional primer disassembly device with simple structure and convenient use is provided.
[0005] The specific technical solutions are as follows:
[0006] A multifunctional primer disassembly device comprises:
[0007] A fastening assembly is used to support and fix the cannonball to be disassembled; and
[0008] A disassembly assembly is detachably fixed to the tail of the cannonball and fixed to the primer, and then the primer is rotated and taken out from the cannonball.
[0009] Further, the fastening assembly comprises:
[0010] A workbench;
[0011] A fixed cannon support is fixedly installed on the workbench;
[0012] The adjusting bracket is arranged on the workbench and can slide towards or away from the fixed bracket.
[0013] The fastening bracket is arranged above the fixed bracket and can slide towards or away from the fixed bracket.
[0014] Further, the fastening assembly further comprises:
[0015] The fastening frame has at least two longitudinal beams and a cross beam, the longitudinal beams are arranged on the sides of the fixed bracket, and the cross beam is arranged on the longitudinal beams.
[0016] The adjusting screw is arranged on the cross beam, and the fastening bracket is arranged at the bottom of the adjusting screw.
[0017] Further, the fastening assembly further comprises a first operating handle arranged on the upper part of the adjusting screw.
[0018] Further, the disassembling assembly comprises:
[0019] The disassembling sleeve is detachably arranged on the tail of the shell.
[0020] The disassembling head is arranged in the disassembling head, and the bottom of the disassembling head can be inserted into the groove of the primer of the shell.
[0021] Further, the disassembling assembly further comprises:
[0022] The at least two supporting legs are arranged on the disassembling sleeve.
[0023] The plurality of movable claws are arranged on the supporting legs and can slide along the supporting legs and be fixed on the supporting legs.
[0024] Further, the disassembling assembly further comprises a plurality of fastening screws arranged on the movable claws.
[0025] Further, the number of the supporting legs is three, and the included angles between the adjacent two supporting legs are 60°, 150° and 150° respectively.
[0026] Further, the disassembling assembly further comprises a second operating handle arranged on the disassembling head.
[0027] Further, the other end of the supporting leg away from the disassembling sleeve is provided with a limiting pin.
[0028] The above-mentioned scheme has the following beneficial effects:
[0029] The device provided by this utility model has a simple structure, is easy to disassemble and reassemble, and is convenient to carry. The device can reliably fix the shell and ensure that there is no relative sliding between the disassembly components and the shell, reducing mechanical damage to the shell body during primer disassembly and improving safety during primer disassembly. The device is applicable to primer disassembly of shells of different calibers and has good versatility. Attached Figure Description
[0030] Figure 1 This is a schematic diagram of the disassembly device provided in an embodiment of the present utility model;
[0031] Figure 2 This is a front view schematic diagram of the fastening assembly provided in an embodiment of the present utility model;
[0032] Figure 3 This is a front view structural diagram of the disassembly assembly provided in an embodiment of the present utility model.
[0033] In the attached diagram: 100, fastening assembly; 110, worktable; 120, fixed cartridge case; 130, adjustable cartridge case; 140, fastened cartridge case; 150, fastening frame; 151, longitudinal beam; 152, crossbeam; 160, adjusting screw; 170, first operating handle; 200, disassembly assembly; 210, disassembly sleeve; 220, disassembly head; 230, support leg; 240, movable claw; 250, fastening screw; 260, second operating handle; 270, limiting pin; 300, shell. Detailed Implementation
[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. 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.
[0035] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0036] The present invention will be further described below with reference to specific embodiments, but this is not intended to limit the present invention.
[0037] like Figures 1 to 3 As shown, the multifunctional primer removal device provided in the embodiment of this utility model includes a fastening component 100 and a detachable removal component 200 fixed to the tail of the shell; the fastening component 100 is used to support and fix the shell to be removed; the removal component 200 is used to rotate and remove the primer from the shell after fixing it.
[0038] As a specific example, as shown in Figure 1 , Figure 2 the fastening assembly 100 includes a workbench 110, a fixed cartridge 120, an adjusting cartridge 130, and a fastening cartridge 140; the fixed cartridge 120 is fixedly installed on the workbench 110; the adjusting cartridge 130 is used for supporting the cannonball in cooperation with the fixed cartridge 120, is embedded on the workbench 110, and can slide towards the direction of approaching or moving away from the fixed cartridge 120; the fastening cartridge 140 is used for fixing the cannonball in cooperation with the fixed cartridge 120, is installed above the fixed cartridge 120, and can slide towards the direction of approaching or moving away from the fixed cartridge 120; under the above structure, after the adjusting cartridge 130 is adjusted to an appropriate distance according to the size of the cannonball 300, the cannonball is placed on the fixed cartridge 120 and the adjusting cartridge 130, and then the fastening cartridge 140 is lowered, so that the fixed cartridge 120 and the adjusting cartridge 130 are used for fastening, thereby ensuring that there is no relative sliding between the dismounting assembly 200 and the cannonball 300. As an example of driving and lowering the fastening cartridge 140, as shown in Figure 2 the fastening assembly 100 can further include a fastening frame 150 and an adjusting screw 160; the fastening frame 150 has at least two longitudinal beams 151 and a cross beam 152, the longitudinal beams 151 are correspondingly installed on one side of the fixed cartridge 120, the cross beam 152 is correspondingly installed on the longitudinal beams 151 at both ends, and the two sides of the fixed cartridge 120 are embedded on the longitudinal beams 151; the adjusting screw 160 is screw-installed on the cross beam 152, and the fastening cartridge 140 is embedded at the bottom of the adjusting screw 160; under the above structure, when the adjusting screw 160 is rotated downward, the adjusting screw 160 pushes the fixed cartridge 120 to move downward along the longitudinal beams 151, and when the fastening cartridge 140 stably abuts the cannonball 300 on the fixed cartridge 120, the rotation of the adjusting screw 160 is stopped. In order to facilitate the quick operation of the adjusting screw 160, a first operation handle 170 can be provided on the upper part of the adjusting screw 160 (in order to limit the first operation handle 170, the first operation handle 170 has limiting ball heads at both ends), so that the adjusting screw 160 can be quickly rotated by the first operation handle 170.
[0039] As a specific example, as shown in Figure 1 , Figure 3 the dismounting assembly 200 includes a dismounting sleeve 210 and a dismounting head 220, the dismounting sleeve 210 is detachably installed on the tail of the cannonball, and the dismounting head 220 is screw-installed in the dismounting head 220; under the above structure, the clamping claws at the bottom of the dismounting head 220 can be inserted into the groove of the primer of the cannonball, the dismounting sleeve 210 is installed on the tail of the cannonball 300, and then the dismounting head 220 is rotated outward, so that the primer is rotated out by the dismounting head 220. As a specific example of installing the dismounting sleeve 210, as shown in Figure 2As shown, the disassembling assembly 200 can further include three supporting legs 230 and three movable claws 240; one end of the supporting leg 230 is embedded in a groove on the disassembling sleeve 210, and the other end of the supporting leg 230 away from the disassembling sleeve 210 is provided with a limiting nail 270; the movable claw 240 is installed on the supporting leg 230, and the movable claw 240 can slide to an appropriate distance along the supporting leg 230 and then be fixed on the supporting leg 230 by a fastening screw 250 installed on the movable claw 240; according to the above structure, when the disassembling head 220 is inserted into the groove of the primer, the movable claw 240 is pushed inward, so that the three movable claws 240 are clamped on the shell 300, then the movable claw 240 is fixed, finally the disassembling head 220 is rotated outward to remove the primer. In order to facilitate storage, the second operation handle 260 is arranged on the upper part of the disassembling head 220. Figure 3 As shown, the angle between the adjacent two supporting legs 230 is 60°, 150° and 150° respectively. In order to facilitate the quick operation of the disassembling head 220, the second operation handle 260 is arranged on the upper part of the disassembling head 220 (in order to limit the second operation handle 260, the second operation handle 260 is provided with a limiting ball head or a limiting screw at both ends), so that the disassembling head 220 can be quickly rotated by the second operation handle 260.
[0040] The above is only the preferred embodiment of the utility model, and does not limit the implementation and protection scope of the utility model. For those skilled in the art, it should be realized that the scheme obtained by equivalent replacement and obvious change of the content of the utility model specification should be included in the protection scope of the utility model.
Claims
1. A multi-function primer removal device characterized by, The application relates to a device for disassembling a shell, comprising: a fastening assembly for supporting and fixing the shell to be disassembled; and a disassembling assembly which is detachably fixed to the tail of the shell and is used for fixing the primer and rotating and taking out the primer from the shell. The fastening assembly comprises:
2. The multi-functional primer de- arming device of claim 1, wherein, a workbench; a fixed shell support which is fixedly installed on the workbench; an adjustable shell support which is used for supporting the shell in cooperation with the fixed shell support and is embedded on the workbench and can slide towards or away from the fixed shell support; and a fastening shell support which is used for fixing the shell in cooperation with the fixed shell support and is installed above the fixed shell support and can slide towards or away from the fixed shell support. The fastening assembly further comprises:
3. The multi-functional primer de- arming device of claim 2, wherein, a fastening frame which has at least two longitudinal beams and a cross beam, the longitudinal beams are correspondingly installed on one side of the fixed shell support, the cross beam is correspondingly installed on the longitudinal beams at two ends, and the two sides of the fixed shell support are embedded on the longitudinal beams; and an adjusting screw rod which is screw-installed on the cross beam and the fastening shell support is embedded at the bottom of the adjusting screw rod. The fastening assembly further comprises a first operating handle which is penetrated on the upper part of the adjusting screw rod.
4. The multi-functional primer de- arming device of claim 3, wherein, The disassembling assembly comprises:
5. The multi-functional primer de- arming device of claim 1, wherein, a disassembling sleeve which is detachably installed on the tail of the shell; and a disassembling head which is screw-installed in the disassembling head and the bottom of the disassembling head can be inserted into the groove of the primer of the shell. The disassembling assembly further comprises:
6. The multi-functional primer de- arming device of claim 5, wherein, at least two supporting legs which are embedded on one end of the disassembling sleeve; and a plurality of movable claws which are used for clamping and fixing the disassembling sleeve on the tail of the shell and are correspondingly installed on the supporting legs, the movable claws can slide along the supporting legs and are fixed on the supporting legs. The disassembling assembly further comprises a plurality of fastening screws which are correspondingly screw-installed on the movable claws.
7. The multi-functional primer de- arming device of claim 6, wherein, The number of the supporting legs is three, and the included angles between two adjacent supporting legs are 60 degrees, 150 degrees and 150 degrees respectively.
8. The multi-functional primer de- arming device of claim 6 or 7, wherein, The disassembling assembly further comprises a second operating handle which is penetrated on the disassembling head.
9. The multi-functional primer de- arming device of claim 8, wherein, Limiting nails are installed on the other ends of the supporting legs which are away from the disassembling sleeve.
10. The multi-functional primer de- arming device of claim 7, wherein,