Projectile positioning device and air cannon automatic machine with projectile positioning function

Abstract

In order to solve the technical problem that the projectile cannot be ejected from the chamber due to the deviation of the posture of the projectile after entering the chamber, the present invention provides a projectile positioning device and an air cannon automatic machine with projectile positioning function without changing the original product structure and part size. The present invention cleverly designs a projectile positioning device within the height range between the middle partition and the rear partition of the feeder and within the remaining space outside the specified feeding line (single serpentine feeding line). The projectile positioning device utilizes the rotation of the first contact and the second contact around the axis and the expansion and contraction of the corresponding spring to continuously generate spring force so that the projectile can enter the chamber smoothly, and the first contact and the second contact can reliably resist the projectile after the projectile enters the chamber, avoiding the failure of the projectile being unable to be ejected due to the incorrect posture of the projectile, and improving the reliability of the weapon.

Description

Technical Field

[0001] The invention relates to a positioning device, in particular to a projectile positioning device and an air cannon automatic machine with a projectile positioning function. Background Art

[0002] Reference Figure 1 The feeder of a certain air cannon is a hexagonal box structure, with the gun chamber located at the center of the feeder. The feeder feeds ammunition to the chamber of the air cannon automatic machine through an internal transmission mechanism.

[0003] Reference Figure 2 When feeding a certain air cannon automatic machine, the feeder delivers the projectile 2 to the feed port of the chamber along the specified feed route, and the projectile 2 is pushed by the last-stage pusher 1, and the projectile 2 enters the chamber 3 by inertial motion. Since the projectile 2 is easy to collide with the inner wall of the chamber 3 after entering the chamber, the posture of the projectile 2 will be offset under the action of the collision force, resulting in the central axis of the projectile 2 not coinciding with the central axis of the chamber 3, so that the projectile 2 cannot be ejected from the chamber 3, affecting the performance of the weapon, and even posing the hidden danger of causing serious accidents. Summary of the invention

[0004] In order to solve the technical problem that the projectile cannot be ejected from the chamber due to the posture deviation of the projectile after entering the chamber, the present invention provides a projectile positioning device and an air cannon automatic machine with projectile positioning function without changing the original product structure and part size.

[0005] The technical solution of the present invention is:

[0006] A projectile positioning device, which is special in that it comprises a first positioning unit and a second positioning unit;

[0007] The first positioning unit includes a fixing column, a connecting rod, a contact, a split pin, a fixing shaft and a spring;

[0008] A through hole and a pin hole are provided in the middle of the side wall of the fixing column, and the two ends of the fixing column are used to be connected with the shaft hole on the feed body in a clearance fit;

[0009] A groove is provided on one end side wall of the connecting rod, and a boss is provided on the other end side wall; the end of the connecting rod with the groove extends into the through hole in the middle of the side wall of the fixing column and can move relatively, and the other end is hinged to the contact;

[0010] The side wall of the contact is used to abut against the elastic body, and the end surface of the contact is provided with an axial hole for installing the fixed shaft;

[0011] The cotter pin is arranged in the pin hole of the side wall of the fixing column, and is used to cooperate with the groove on the connecting rod to limit the moving stroke of the connecting rod;

[0012] The fixed shaft is installed in the shaft hole of the contact, and the two can rotate relative to each other; the two ends of the fixed shaft are used to connect with the feeder;

[0013] The spring is sleeved outside the connecting rod and is axially limited by the fixing column and the boss on the side wall of the connecting rod; the spring is used to reset the connecting rod and provide pressure for the contact to resist the elastic body;

[0014] The second positioning unit has the same structural principle as the first positioning unit, and the only difference is that:

[0015] The contact in the second positioning unit is a mirror image structure of the contact in the first positioning unit. The axial hole on the contact in the second positioning unit is used to cooperate with the spline shaft of the air cannon automatic machine for installation and can rotate relatively. The second positioning unit omits the fixed shaft.

[0016] The first positioning unit and the second positioning unit are symmetrically arranged about the chamber of the air cannon robot when in use, and are respectively used to support the two sides of the projectile during and after the projectile enters the chamber, so that the projectile enters the chamber smoothly and positions it after entering the chamber.

[0017] Furthermore, a plane is processed on the side wall of the fixing column for limiting the spring, so that there is surface contact between the spring and the fixing column, so as to improve the reliability of the limit.

[0018] Furthermore, the connecting rod and the contact are connected through a lug and an ear seat structure, and the lug and the ear seat are hinged through a pin.

[0019] Furthermore, an expansion riveting opening is provided at the end of the pin shaft.

[0020] Furthermore, the side wall of the contact is an arc surface.

[0021] Furthermore, the contact is provided with a weight-reducing hole.

[0022] Furthermore, the weight-reducing hole is chamfered.

[0023] Furthermore, a limiting boss is provided on the fixed shaft, and the contact is limited on the fixed shaft by the shaft sleeve and the limiting boss.

[0024] Furthermore, the two ends of the fixed shaft are used to be connected with the mounting holes on the middle partition and the rear partition of the feeder in a clearance fit.

[0025] The present invention also provides an air cannon automatic machine with a projectile positioning function, the special feature of which is that it includes the projectile positioning device mentioned above.

[0026] The beneficial effects of the present invention are:

[0027] 1. The present invention cleverly designs a projectile positioning device within the height range between the middle partition and the rear partition of the feeder and within the remaining space outside the specified feed line (single serpentine feed line). The projectile positioning device utilizes the rotation of the first contact and the second contact around the axis and the expansion and contraction of the corresponding spring to continuously generate spring force so that the projectile can be smoothly fed into the chamber, and the first contact and the second contact can reliably resist the projectile after the projectile enters the chamber, thereby avoiding the failure of the projectile to be unable to be fired due to the incorrect posture of the projectile, and improving the reliability of the weapon.

[0028] 2. The present invention does not change the original structure and parts size of the air cannon automatic machine, but only adds mounting holes for installing the projectile positioning device at the corresponding positions of the middle partition and the rear partition of the feeder, so as to realize the positioning function of the projectile. It is easy to realize, has low improvement cost and good applicability.

[0029] 3. Compared with the existing air cannon automatic machine, the air cannon automatic machine of the present invention has a more reliable working performance due to the additional projectile positioning device, and will not have the hidden danger of the projectile being unable to be ejected in the existing air cannon automatic machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is an axonometric view of a certain feeding machine.

[0031] Figure 2 This is a structural diagram of a certain air cannon automatic machine, where: Figure a is an axonometric view and Figure b is the main view.

[0032] Figure 3 It is a front view of the first positioning unit in the projectile positioning device of the present invention.

[0033] Figure 4 yes Figure 3 Rotated section view at AA in the middle.

[0034] Figure 5 It is an axonometric view of the first fixing column in the first positioning unit.

[0035] Figure 6 is an axonometric view of the first connecting rod in the first positioning unit.

[0036] Figure 7 is an isometric view of the first contact in the first positioning unit.

[0037] Figure 8 It is the front view of the pin in the first positioning unit.

[0038] Fig. 9 It is the front view of the fixed axis in the first positioning unit.

[0039] Fig.10 It is a front view of the second positioning unit in the projectile positioning device of the present invention.

[0040] Fig.11 yes Fig.10 Rotated section view at the middle BB.

[0041] Fig.12 is an isometric view of the second contact in the second positioning unit.

[0042] Fig.13 The projectile positioning device of the present invention and Figure 1 The axonometric drawing of the matching relationship of the air cannon robot is shown.

[0043] Fig.14 yes Fig.13 main view.

[0044] Fig.15 yes Fig.14 Cross-sectional view at CC.

[0045] Fig.16 It is a schematic diagram of the installation position of the projectile positioning device of the present invention in the projectile feeding machine.

[0046] Description of reference numerals:

[0047] 1- bullet wheel; 2- projectile body; 3- chamber; 4- spline shaft;

[0048] 5-first positioning unit; 51-first fixing column; 511-positioning plane; 512-axis hole; 513-opening pin hole; 52-first open pin; 53-first spring; 54-first connecting rod; 541-lug; 542-pin hole; 543-groove; 55-first pin shaft; 551-expanded rivet mouth; 56-first contact; 561-axis hole; 562-weight reduction hole; 563-ear seat; 564-pin hole; 57-fixed shaft; 571-fixed shaft sleeve; 572-shaft body; 573-first-order shaft; 574-second-order shaft; 575-third-order shaft; 576-fourth-order shaft; 577-fifth-order shaft;

[0049] 6-second positioning unit; 61-second fixing column; 62-second cotter pin; 63-second spring; 64-second connecting rod; 65-second pin shaft; 66-second contact; 661-shaft hole; 662-weight reduction hole; 663-ear seat; 664-pin hole;

[0050] 7-loading machine; 71-rear partition; 72-middle partition; 73-front partition. DETAILED DESCRIPTION

[0051] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0052] like Figure 3-15 The projectile positioning device provided by the present invention includes a first positioning unit 5 and a second positioning unit 6.

[0053] like Figure 3-4 As shown in Figures 1 and 16, the first positioning unit 5 includes a first fixed column 51, a first cotter pin 52, a first spring 53, a first connecting rod 54, a first pin shaft 55, a first contact 56 and a fixed shaft 57; one end of the first connecting rod 54 extends into the axial hole in the middle of the first fixed column 51, and the other end is hinged to the first contact 56 through the first pin shaft 55; the fixed shaft 57 is installed in the axial hole of the first contact 56, and the two can rotate relative to each other; the two ends of the fixed shaft 57 are used to be connected with the corresponding mounting holes on the middle partition 72 and the rear partition 71 of the feeder 7 in a clearance fit; the first spring 53 is sleeved on the outside of the first connecting rod 54, and is axially limited by the bosses on the first fixed column 51 and the first connecting rod 54; the first cotter pin 52 is arranged on the first fixed column 51, and cooperates with the groove at the end of the first connecting rod 54 to limit the moving stroke of the first connecting rod 54.

[0054] like Figure 5 , 16 As shown, the first fixed column 51 is a three-order shaft-like structure composed of a first-order shaft, a second-order shaft and a third-order shaft arranged in sequence; the first-order shaft and the third-order shaft are respectively used to connect with the corresponding mounting holes on the middle partition 72 and the rear partition 71 of the feeder 7, and the assembly relationship is a clearance fit; a positioning plane 511 is processed on the side wall of the second-order shaft parallel to its own axial direction, and the positioning plane 511 is used to reliably contact with one end of the first spring 53, so as to reliably limit the first spring 53; an axial hole 512 perpendicular to the positioning plane 511 is also opened on the positioning plane 511, and the axial hole 512 is used for one end of the first connecting rod 54 to pass through; an open pin hole 513 is also opened on the side wall of the second-order shaft, and the axis of the open pin hole 513 is perpendicular to the axis of the axis hole 512 and the first fixed column 51 at the same time, and the open pin hole 513 is used to insert the first open pin 52, and the first open pin 52 is used to limit the moving stroke of the first connecting rod 54.

[0055] like Figure 6 As shown, the first connecting rod 54 is a second-order rod-shaped structure, and its second-order axis is a cylindrical boss relative to the first-order axis; the second-order axis end of the first connecting rod 54 has a lug 541, and the lug 541 is provided with a pin hole 542 for installing the pin shaft; the side wall of the first-order axis end of the first connecting rod 54 is processed with a groove 543 along its axial direction, and the bottom plane of the groove 543 is perpendicular to the axis of the pin hole 542; the first-order axis end of the first connecting rod 54 is inserted into the axis hole 512 of the first fixed column 51, and can be translated along the axis of the axis hole 512; after assembly, the first cotter pin 52 is inserted into the cotter pin hole 513 of the first fixed column 51, and through the cooperation between the first cotter pin 52 and the side wall of the groove 543 on the first connecting rod 54, the first connecting rod 54 can only move within the range between the two side walls of its groove 543.

[0056] The first spring 53 is sleeved on the first connecting rod 54, one end of the first spring 53 is positioned by the end face of the second-order shaft on the first connecting rod 54, and the other end of the first spring 53 is positioned by the positioning plane 511 on the first fixing column 51; when the first connecting rod 54 moves outward along the axial hole 512 of the first fixing column 51 under the action of external force, the first spring 53 will be compressed; when the external force disappears, the first spring 53 is used to achieve the reset of the first connecting rod 54.

[0057] See also Figure 7 , the first contact 56 is provided with an axial hole 561 and a weight-reducing hole 562; the first contact 56 is in an "8" shape along a cross section perpendicular to the axis of the axial hole 561; the axial hole 561 on the first contact 56 is used to connect with the fixed shaft 57, and the assembly relationship between the two is a clearance fit. After the connection, the first contact 56 can rotate around the fixed shaft 57; an ear seat 563 for matching with the lug 541 of the first connecting rod 54 is also provided on the side wall of the weight-reducing hole 562, and a pin hole 564 for the first pin shaft 55 to pass through is provided on the ear seat 563; the ear seat 563 of the first contact 56 is hinged with the lug 541 at the end of the first connecting rod 54 through the first pin shaft 55, and the first contact 56 can rotate around the first pin shaft 55 relative to the first connecting rod 54; the outer arc surface of the weight-reducing hole 562 is the contact surface with the elastic body; in order to further reduce the weight and reduce the contact area with the elastic body, a chamfer is also processed on the weight-reducing hole 562.

[0058] like Figure 8 As shown, the first pin shaft 55 used to connect the first connecting rod 54 and the fixed shaft 57 is a two-step shaft structure, and the shaft end of the first-step shaft of the first pin shaft 55 is provided with a rivet expansion opening 551 for rivet expansion after assembly to prevent it from falling off and improve the reliability of assembly.

[0059] like Fig. 9 , 16 As shown, the fixed shaft 57 includes a shaft body 572 and a shaft sleeve 571; the shaft body 572 is a five-step shaft structure, and the first-step shaft 573 and the fifth-step shaft 577 located at both ends of the shaft body 572 are respectively used to be connected with the corresponding mounting holes on the middle partition 72 and the rear partition 71 of the feeder 7 with clearance fit; the second-step shaft 574 of the shaft body 572 is used to be connected with the shaft hole 561 of the first contact 56 with clearance fit, so that the first contact 56 can rotate around the fixed shaft 57; The third-order shaft 575 of the body 572 is a boss relative to the second-order shaft 574 and the fourth-order shaft 576. After the second-order shaft 574 is inserted into the shaft hole 561 of the first contact 56, the sleeve 571 is mounted on the second-order shaft 574, and the axial position of the first contact 56 on the fixed shaft 57 is jointly defined by the third-order shaft 575 and the sleeve 571; the fourth-order shaft 576 of the shaft body 572 is a boss relative to the fifth-order shaft 577, and no parts are assembled.

[0060] like Figure 10-12As shown, the structure of the second positioning unit 6 is the same as the structural principle of the first positioning unit 5, and the only difference is that: the second contact 66 and the first contact 56 in the first positioning unit 5 are mirror-image structures, and the shaft hole 661 on the second contact 66 is different in size from the shaft hole 561 on the first contact 56, because: the shaft hole 561 on the first contact 56 is used to install the fixed shaft 57, and its size matches the fixed shaft 57; the shaft hole 661 on the second contact 66 is used to install the spline shaft 4 of the air cannon automatic machine, and its size matches the spline shaft 4, and is connected with the spline shaft 4 with a clearance fit, and the second contact 66 can rotate around the spline shaft 5; in addition, since the second contact 66 matches the spline shaft 4 of the air cannon automatic machine, it can be connected to the air cannon automatic machine through the spline shaft 4, and thus the second positioning unit 6 omits the fixed shaft 57.

[0061] Working principle and process of the present invention:

[0062] See also Figure 13-16 Before work, the first positioning unit 5 and the second positioning unit 6 are symmetrically arranged on the left and right sides of the chamber 3; the two ends of the first fixing column 51 of the first positioning unit 5 are installed in the corresponding mounting holes on the middle partition 72 and the rear partition 71 of the feeder 7, and the two ends of the fixed shaft 57 are installed in the corresponding mounting holes on the middle partition 72 and the rear partition 71 of the feeder 7; the two ends of the second fixing column 61 of the second positioning unit 6 are installed in the corresponding mounting holes on the middle partition 72 and the rear partition 71 of the feeder 7, and the second contact 66 is mounted on the spline shaft 4 of the air cannon automatic machine.

[0063] During operation, the ejector wheel 1 presses the projectile body 2 into the chamber 3 along a prescribed projectile feeding route.

[0064] During the process of entering the chamber, the projectile body 2 contacts the action surfaces of the first contact 56 of the first positioning unit 5 and the second contact 66 of the second positioning unit 6 respectively, and causes the first contact 56 to rotate around the fixed axis 57, and causes the second contact 66 to rotate around the spline shaft 4; during the rotation of the first contact 56, it will drive the first connecting rod 54 on its left side to move to the left along its own axis and compress the first spring 53, and during the rotation of the second contact 66, it will drive the second connecting rod 64 on its right side to move to the right along its own axis and compress the second spring 63.

[0065] When the projectile 2 enters the chamber 3, under the action of the spring force of the first spring 53, the first connecting rod 54 moves to the right along its own axis to reset the first contact 56. Under the action of the spring force of the second spring 63, the second connecting rod 64 moves to the left along its own axis to reset the second contact 66. Under the action of the pressure provided by the first spring 53 and the second spring 63, the first contact 56 and the second contact 66 are reset and firmly press against the projectile 2 together, thereby achieving the purpose of positioning the projectile 2.

[0066] Since the projectile positioning device of the present invention does not need to change the structure and part size of the existing air cannon automatic machine when in use, the projectile positioning device of the present invention can be added to the existing air cannon automatic machine and installed according to the above working principle and the installation method mentioned in the process, so as to obtain a new air cannon automatic machine with a projectile positioning function, thereby improving the performance of the existing air cannon automatic machine.

Claims

1. A projectile positioning device, characterized in that: comprising a first positioning unit and a second positioning unit; The first positioning unit includes a fixing column, a connecting rod, a contact, a split pin, a fixing shaft and a spring; A through hole and a pin hole are provided in the middle of the side wall of the fixing column, and the two ends of the fixing column are used to be connected with the shaft hole on the feed body in a clearance fit; A groove is provided on one end side wall of the connecting rod, and a boss is provided on the other end side wall; the end of the connecting rod with the groove extends into the through hole in the middle of the side wall of the fixing column and can move relatively, and the other end is hinged to the contact; The side wall of the contact is used to abut against the elastic body, and the end surface of the contact is provided with an axial hole for installing the fixed shaft; The cotter pin is arranged in the pin hole of the side wall of the fixing column, and is used to cooperate with the groove on the connecting rod to limit the moving stroke of the connecting rod; The fixed shaft is installed in the shaft hole of the contact, and the two can rotate relative to each other; the two ends of the fixed shaft are used to connect with the feeder; The spring is sleeved outside the connecting rod and is axially limited by the fixing column and the boss on the side wall of the connecting rod; the spring is used to reset the connecting rod and provide pressure for the contact to resist the elastic body; The second positioning unit has the same structural principle as the first positioning unit, and the only difference is that: The contact in the second positioning unit is a mirror image structure of the contact in the first positioning unit. The axial hole on the contact in the second positioning unit is used to cooperate with the spline shaft of the air cannon automatic machine for installation and can rotate relatively. The second positioning unit omits the fixed shaft. The first positioning unit and the second positioning unit are symmetrically arranged about the chamber of the air cannon robot when in use, and are respectively used to support the two sides of the projectile during and after the projectile enters the chamber, so that the projectile enters the chamber smoothly and positions it after entering the chamber.

2. The projectile positioning device according to claim 1, characterized in that: The fixing column is used to limit the side wall of the spring and is processed with a plane, so that the spring and the fixing column are in surface contact.

3. The projectile positioning device according to claim 1, characterized in that: The connecting rod is connected to the contact through a lug and an ear seat structure, and the lug and the ear seat are hinged through a pin shaft.

4. The projectile positioning device according to claim 3, characterized in that: The end of the pin shaft is provided with an expansion riveting opening.

5. The projectile positioning device according to claim 1, characterized in that: The side wall of the contact is an arc surface.

6. The projectile positioning device according to any one of claims 1 to 5, characterized in that: The contact is provided with a weight-reducing hole.

7. The projectile positioning device according to claim 6, characterized in that: The weight-reducing holes are processed with chamfers.

8. The projectile positioning device according to claim 7, characterized in that: The fixed shaft is provided with a limiting boss, and the contact is limited on the fixed shaft by the shaft sleeve and the limiting boss.

9. The projectile positioning device according to any one of claims 1 to 5, characterized in that: The two ends of the fixed shaft are used to be connected with the mounting holes on the middle partition and the rear partition of the feeder in a clearance fit.

10. An air cannon automatic machine with projectile positioning function, characterized in that: It comprises the projectile positioning device described in any one of claims 1-9.

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