A composite cylinder relative motion control mechanism and its use method

Abstract

The present invention discloses a composite cylinder relative motion control mechanism and its use method, comprising an outer cylinder, an inner cylinder, a locking pin, a locking pin spring, an end cap, a manipulator, a push rod, and a manipulator spring. The end cap is connected to the inner cylinder, and the manipulator step surface abuts the inner end surface of the locking pin, causing the locking pin to remain in a resilient state and to be stuck on the outer cylinder step, thereby locking the inner and outer cylinders. When the push rod pushes the manipulator, the locking pin presses down to unlock the inner and outer cylinders, thereby pushing the inner cylinder out. When the inner cylinder's pushing stroke is completed, the push rod pulls the inner cylinder back through the locking pin. After the inner cylinder is reset, the locking pin springs up, relocking the inner and outer cylinders. The present invention achieves the pushing, pulling, and locking of the inner cylinder through the locking pin control mechanism and the push rod. It has a compact structure, requires little push and pull force on the push rod, and provides reliable locking. It can be applied to a split-type mortar shell automatic assembly system to improve projectile assembly speed and operational reliability.

Description

Technical Field

[0001] The present invention belongs to the technical field of weapon equipment components, and in particular relates to a composite barrel relative motion control mechanism for a mortar automatic charge changing system and a use method thereof. Background Art

[0002] Automatic charge change technology is a key core technology for unmanned mortars. Split mortars provide an effective technical solution for this automatic charge change, and the composite barrel relative motion control mechanism is the core mechanism for this technology. The composite barrel, which houses the split mortar components, serves as the basic unit of the automatic magazine. Driven by the power unit and the composite barrel motion control mechanism, the inner barrel pushes out and retracts relative to the outer barrel, locking it and completing automatic charge change and projectile assembly. The inner barrel's motion resistance significantly impacts projectile assembly speed. Currently, composite barrels use large-diameter springs to provide the inner barrel's return force, resulting in a large lateral dimension for the outer barrel and high motion resistance, reducing projectile assembly speed and the mortar's rate of fire. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides a composite tube relative motion control mechanism and its use method, which directly uses the reciprocating motion of the push rod itself to drive the push and reset of the inner tube, eliminating the resistance caused by the large diameter spring, solving the problems of large magazine size and high resistance to automatic assembly of the projectile, and can greatly improve the assembly speed.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A composite cylinder relative motion control mechanism comprises an outer cylinder, an inner cylinder, a locking pin, a locking pin spring, an end cover, a manipulator, a push rod, and a manipulator spring;

[0006] The outer cylinder is mounted on the frame and remains stationary, the inner cylinder is mounted in the outer cylinder, the end cover is mounted at the opening of the inner cylinder, the manipulator and the manipulator spring are arranged in the central blind hole of the end cover, the manipulator spring is arranged between the bottom surface of the central blind hole of the end cover and the manipulator, the locking pin is arranged through the end cover and the inner cylinder, the locking pin spring is sleeved outside the locking pin and is located inside the end cover, when the inner and outer cylinders are locked, the outer end of the locking pin is clamped at the step surface of the inner wall of the outer cylinder, and the inner end is clamped at the step surface of the outer wall of the manipulator, the push rod can push the manipulator to unlock the inner and outer cylinders, and in the unlocked state, the inner cylinder can move relative to the outer cylinder.

[0007] Furthermore, the step surface of the inner wall of the outer cylinder includes an outer cylinder step plane and an outer cylinder step inclined surface.

[0008] Furthermore, the step surface of the outer wall of the manipulator includes a manipulator step plane and a manipulator step vertical surface.

[0009] Furthermore, the push rod includes a large diameter section located on one side of the manipulator and a small diameter section away from the manipulator, and a push rod step slope is formed between the large diameter section and the small diameter section.

[0010] Furthermore, the outer diameter of the large diameter section is the same as the outer diameter of the manipulator step plane.

[0011] Furthermore, the number of the locking pins is N, and the N locking pins are arranged along the radial direction of the end cover, and N≥2.

[0012] Furthermore, a roller mechanism is provided on the inner end surface and / or the outer end surface of the locking pin.

[0013] Furthermore, the length of the locking pin is equal to the distance from the outer cylinder step plane to the manipulator step plane, and the height of the outer cylinder step slope is equal to the height of the push rod step slope.

[0014] A mortar comprises the above-mentioned composite tube relative motion control mechanism.

[0015] According to the above-mentioned automatic charge changing method of mortar, the following steps are included:

[0016] Step 1: Inner tube pushing out stage: the mortar tail fins and powder bag are pre-installed inside the inner tube, the push rod pushes the manipulator, the manipulator spring is in a compressed state, the inner end of the locking pin slides over the manipulator step plane and abuts against the push rod small diameter section, the locking pin is pressed back into the end cover under the action of the outer tube step slope, the inner tube and the outer tube are unlocked, the push rod continues to push the inner tube out of the outer tube, the tail fins and powder bag installed inside the inner tube are pushed to the tail of the mortar, and the automatic charging process is completed;

[0017] Step 2: Inner cylinder reset stage: After the charging is completed, the pushing stroke of the inner cylinder is completed, and the push rod returns. At this time, the inner end of the locking pin is stuck at the push rod step inclined surface of the push rod head, and the push rod pulls the inner cylinder back through the locking pin. When the locking pin moves to the inclined surface of the outer cylinder step, the locking pin bounces up to the outer end and abuts against the outer cylinder step plane. The manipulator is reset under the push of the manipulator spring, and the vertical surface of the manipulator step abuts against the inner end of the locking pin, so that the locking pin remains in the bounced state, and the inner cylinder and the outer cylinder are locked again, completing the reset of the inner cylinder.

[0018] Compared with the prior art, the present invention has the following significant advantages:

[0019] The inner tube is pushed out, pulled back and locked through the locking pin control mechanism and the push rod. It has a compact structure and requires little push and pull force from the push rod, which can effectively improve the speed and working reliability of the automatic assembly of the split mortar. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the relative motion control mechanism of the composite cylinder of the present invention.

[0021] Figure 2 It is a structural schematic diagram of the inner cylinder pushing out and resetting stages of the composite cylinder relative motion control mechanism of the present invention.

[0022] Figure 3 It is a schematic diagram of the outer cylinder structure of the composite cylinder relative motion control mechanism of the present invention.

[0023] Figure 4 It is a schematic diagram of the lock pin structure of the composite cylinder relative motion control mechanism of the present invention.

[0024] Figure 5 It is a schematic diagram of the structure of the manipulator of the relative motion control mechanism of the composite cylinder of the present invention.

[0025] Figure 6 It is a schematic diagram of the push rod structure of the relative motion control mechanism of the composite cylinder of the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] The implementation of the present invention is described in detail below with reference to specific embodiments.

[0028] Combine Figures 1 to 6 The relative motion control mechanism of the composite cylinder includes an outer cylinder 1, an inner cylinder 2, a locking pin 3, a locking pin spring 4, an end cover 5, a manipulator 6, a push rod 7, and a manipulator spring 8;

[0029] The installation method of the various parts of the above-mentioned composite cylinder relative motion control mechanism is as follows: the outer cylinder 1 is installed on the frame and remains stationary, the inner cylinder 2 is installed in the outer cylinder 1, the end cover 5 is connected to the inner cylinder 2, the inner end 32 of the lock pin 3 is stuck on the vertical surface 61 of the manipulator step to prevent the manipulator 6 from detaching from the end cover 5, thereby achieving mutual locking between the manipulator 6 and the lock pin 3, the manipulator step plane 62 abuts against the inner end 32 of the lock pin 3, so that the lock pin 3 remains in a bounced state, and the outer end 31 of the lock pin 3 is stuck on the outer cylinder step plane 12 to achieve locking of the inner cylinder 2.

[0030] Furthermore, the number of the locking pins 3 can be 2 or 2N (N is an integer).

[0031] Furthermore, the inner cylinder 2 is provided with 2 or 2N (N is an integer) holes for the locking pin 3 to move.

[0032] Furthermore, the end cover 5 is provided with 2 or 2N (N is an integer) holes for installing the lock pin 3 and the lock pin spring 4.

[0033] Furthermore, the push rod 7 is provided with a push rod step inclined surface 71 for the inner end 32 of the locking pin 3 to slide on the surface, and the inner end 32 of the locking pin 3 can be provided with a roller mechanism to reduce movement resistance.

[0034] Furthermore, the outer cylinder 1 is provided with an outer cylinder step inclined surface 11 for the outer end 31 of the locking pin 3 to slide on the surface, and the outer end 31 of the locking pin 3 can be provided with a roller mechanism to reduce movement resistance.

[0035] Furthermore, the inner cylinder 2 and the outer cylinder 1 are restricted from relative rotation by a stop pin.

[0036] Furthermore, the length of the locking pin 3 is equal to the distance from the outer cylinder step plane 12 to the manipulator step plane 62. In the locked state, the locking pin 3 can reliably lock the inner cylinder 2 in the outer cylinder 1 to prevent relative movement between the inner cylinder 2 and the outer cylinder 1.

[0037] Furthermore, the height of the outer cylinder step slope 11 is equal to the height of the push rod step slope 71 , so that the push rod 7 can effectively pull back the inner cylinder 2 .

[0038] The composite barrel relative motion control mechanism of the present invention can be used in mortars to automatically charge and change explosives. The specific process is as follows:

[0039] Step 1: Inner tube pushing-out stage, the tail fins and powder charge of the split mortar are pre-installed inside the inner tube, the push rod 7 pushes the manipulator 6, the manipulator spring 8 is in a compressed state, the inner end 32 of the lock pin 3 slides over the manipulator step plane 62 and abuts against the small diameter section of the push rod 7, the lock pin 3 is pressed back into the end cover 5 under the action of the outer tube step slope 11, the inner tube 2 is unlocked from the outer tube 1, the push rod 7 continues to push the inner tube 2 out of the outer tube 1, and the tail fins and powder charge installed inside the inner tube are pushed to the tail of the split mortar, completing the automatic charging process of the split mortar;

[0040] Step 2: In the inner cylinder resetting stage, after the charging is completed, the pushing stroke of the inner cylinder 2 is completed, and the push rod 7 returns. At this time, the inner end 32 of the locking pin 3 is stuck at the push rod step inclined surface 71 of the push rod 7 head, and the push rod 7 pulls the inner cylinder 2 back through the locking pin 3. When the locking pin 3 moves to the outer cylinder step inclined surface 11, the locking pin 3 bounces up to the outer end 31 and abuts against the outer cylinder step plane 12. The manipulator 6 is reset under the push of the manipulator spring 8, and the manipulator step vertical surface 61 abuts against the inner end 32 of the locking pin 3, so that the locking pin 3 remains in the bounced state, and the inner cylinder 2 and the outer cylinder 1 are locked again, completing the resetting of the inner cylinder 2.

[0041] The basic principles, main features, and advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A method for automatically changing charge of a mortar, the mortar comprising a composite barrel relative motion control mechanism, the composite barrel relative motion control mechanism comprising an outer barrel (1), an inner barrel (2), a locking pin (3), a locking pin spring (4), an end cover (5), a manipulator (6), a push rod (7), and a manipulator spring (8); The outer cylinder (1) is mounted on the frame and remains stationary, the inner cylinder (2) is mounted in the outer cylinder (1), the end cover (5) is mounted at the opening of the inner cylinder (2), the manipulator (6) and the manipulator spring (8) are arranged in the central blind hole of the end cover (5), the manipulator spring (8) is arranged between the bottom surface of the central blind hole of the end cover (5) and the manipulator (6), the locking pin (3) passes through the end cover (5) and the inner cylinder (2), the locking pin spring (4) is sleeved outside the locking pin (3) and is located in the end cover (5), in the locked state of the inner and outer cylinders, the outer end (31) of the locking pin (3) is clamped on the step surface of the inner wall of the outer cylinder (1), and the inner end (32) is clamped on the step surface of the outer wall of the manipulator (6), the push rod (7) can push the manipulator (6) to unlock the inner and outer cylinders, and in the unlocked state, the inner cylinder (2) can move relative to the outer cylinder (1); The step surface of the inner wall of the outer cylinder (1) includes an outer cylinder step plane (12) and an outer cylinder step inclined surface (11); the step surface of the outer wall of the manipulator (6) includes a manipulator step plane (62) and a manipulator step vertical surface (61); the push rod (7) includes a large diameter section located on one side of the manipulator (6) and a small diameter section located away from the manipulator (6); a push rod step inclined surface (71) is formed between the large diameter section and the small diameter section; It is characterized by: The method comprises the following steps: Step 1: Inner tube pushing out stage: the inner tube (2) is pre-installed with the mortar tail and the powder bag, the push rod (7) pushes the manipulator (6), the manipulator spring (8) is in a compressed state, the inner end (32) of the lock pin (3) slides over the manipulator step plane (62) and abuts against the small diameter section of the push rod (7), the lock pin (3) is pressed back into the end cover (5) under the action of the outer tube step slope (11), the inner tube (2) and the outer tube (1) are unlocked, the push rod (7) continues to push the inner tube (2) out of the outer tube (1), and the tail and the powder bag installed in the inner tube (2) are pushed to the tail of the mortar, completing the automatic charging process; Step 2: Inner tube reset stage: After the charge is completed, the pushing stroke of the inner tube (2) ends, and the push rod (7) returns. At this time, the inner end (32) of the lock pin (3) is stuck at the push rod step inclined surface (71) at the head of the push rod (7). The push rod (7) pulls the inner tube (2) back through the lock pin (3). When the lock pin (3) moves to the outer tube step inclined surface (11), the lock pin (3) bounces up to the outer end (31) and abuts against the outer tube step plane (12). The manipulator (6) is reset under the push of the manipulator spring (8). The manipulator step vertical surface (61) abuts against the inner end (32) of the lock pin (3), so that the lock pin (3) remains in the bounced state, and the inner tube (2) and the outer tube (1) are locked again, completing the reset of the inner tube (2).

2. The automatic charge changing method for a mortar according to claim 1, characterized in that: The outer diameter of the large diameter section is the same as the outer diameter of the manipulator step plane (62).

3. The automatic charge changing method for a mortar according to claim 1 or 2, characterized in that: The number of the locking pins (3) is N, and the N locking pins (3) are arranged along the radial direction of the end cover (5), where N≥2.

4. The automatic charge changing method for a mortar according to claim 1 or 2, characterized in that: The inner end (32) end surface and / or the outer end (31) end surface of the locking pin (3) are provided with a roller mechanism.

5. The automatic charge changing method for mortar according to claim 3, characterized in that: The length of the locking pin (3) is equal to the distance from the outer cylinder step plane (12) to the manipulator step plane (62), and the height of the outer cylinder step slope (11) is equal to the height of the push rod step slope (71).

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