Gear and rack driven bullet retreating device

Abstract

A gear and rack driven bullet retreating device comprises a hollow sleeve arranged in the front-back direction, a rack is inserted in the sleeve in a clearance fit mode and meshed with a driving gear, the driving gear is fixedly arranged at the right end of a gear shaft in a sleeved mode, a worm gear is arranged on the left side of the gear shaft in a sleeved mode, and the worm gear is meshed with a worm on a worm shaft. The worm shaft and the gear shaft are rotatably installed on the worm gear case shell through sliding bearings, and the worm gear case shell is fixedly connected with the rear portion of the sleeve. The utility model aims to provide the gear and rack driven bullet retreating device which can be used for quickly retreating the artillery, greatly improving the bullet retreating efficiency of the artillery, reducing the time required by operation and simultaneously reducing the labor intensity of operators.

Description

Technical Field

[0001] The invention relates to a gear rack driven bullet ejecting device. Background Art

[0002] Every time a cannon fails to eject a shell, the troubleshooting process is usually cumbersome and complicated. Due to the inherent characteristics of thermal expansion and contraction, the locking force between the shell and the barrel is relatively large. The traditional method is to insert the handle cleaning rod and the ejector shield into the barrel from one end of the muzzle, let the ejector shield at the front end of the handle cleaning rod cover the shell, and then use a hammer to hit the handle cleaning rod to eject the shell backwards. However, the actual work efficiency is low and the operators are prone to fatigue because the operators have to replace the hammers one after another. In addition, the connection between the handle cleaning rod and the ejector shield will be damaged due to repeated knocking, resulting in the handle cleaning rod and the ejector shield being unable to continue to be used. In addition, before the hammering operation, it is necessary to use the surrounding convenient equipment to build a small platform for people to stand near the muzzle. In other words, the operator's standing position must be raised, otherwise it is not easy to swing the hammer. Usually it needs to be raised by about 1.5 meters. This also increases the workload of the bullet removal work, especially in field conditions. It not only increases the difficulty of the bullet removal operation, but also is not conducive to the realization of the purpose of rapid repair and the completion of core tasks. Summary of the invention

[0003] The purpose of the present invention is to provide a gear rack driven bullet ejection device which can quickly eject artillery shells, greatly improve the efficiency of artillery bullet ejection, reduce the time required for the operation, and at the same time reduce the labor intensity of operators.

[0004] The gear rack driven bullet unloading device of the present invention comprises a hollow sleeve arranged in the horizontal direction at the front and rear sides, a rack is inserted in the sleeve by a clearance fit, the rack is meshed with the driving gear, the driving gear is fixed on the right end of the gear shaft, a worm wheel is mounted on the left side of the gear shaft, the worm wheel is meshed with the worm on the worm shaft, the worm shaft and the gear shaft are rotatably mounted on the worm gear box housing through sliding bearings respectively, and the worm gear box housing is fixedly connected to the rear of the sleeve;

[0005] The upper part of the worm shaft extends upward and out of the worm gear housing, and a hand crank is installed on the top of the worm shaft;

[0006] The front part of the rack extends forward and out of the sleeve, the front end of the rack is connected to the rear end of the push rod, and the front end of the push rod is connected to the middle part of the rear end of the ejector shield;

[0007] An upper ear plate is provided at the top end of the sleeve located in front of the worm gear housing, and a lower ear plate is provided at the bottom end of the sleeve located in front of the worm gear housing. The upper ear plate is hingedly connected to the inner end of the upper swing rod, and the outer end of the upper swing rod is hingedly connected to the inner end of the upper hook rod. The outer end of the upper hook rod is provided with an upper grab hook bent in the counterclockwise direction.

[0008] The lower ear plate is hingedly connected to the inner end of the lower swing rod, the outer end of the lower swing rod is hingedly connected to the inner end of the lower hook rod, and the outer end of the lower hook rod is provided with a lower grab hook bent in the counterclockwise direction;

[0009] A rear locking plate is fixed to the sleeve located in front of the upper ear plate and the lower ear plate, and a front locking plate is fixed to the sleeve located in front of the rear locking plate.

[0010] Preferably, the sleeve is a square steel pipe, the worm gear housing and the sleeve are fixedly connected by bolts, and the front end of the rack and the rear end of the push rod are fixedly connected by threaded connection.

[0011] Compared with the prior art, the rack-and-pinion driven ejection device of the present invention has the following advantages:

[0012] 1. The rack-and-pinion driven bullet-removing device of the present invention can be used with a vehicle and placed in a vehicle tool box before the improvement. After the improvement, the size is smaller and the folding design is convenient for carrying, and there is no need to consider the problem of difficulty in carrying;

[0013] 2. The rack-and-pinion driven shell ejection device of the present invention realizes the mechanized operation of artillery shell ejection, shortening the time from about 120 minutes to about 10 minutes, saving about 110 minutes, saving shell ejection time, simplifying the shell ejection procedure, greatly improving shell ejection efficiency, and having great significance for battlefield survival.

[0014] 3. The rack and pinion driven bullet ejection device of the present invention solves the problems of difficult and slow bullet ejection, difficulty in combining supporting tooling, multiple procedures, large number of manpower, and complicated movements, thereby ensuring safety, simplifying the labor intensity of personnel, and thus improving work efficiency.

[0015] 4. The rack and pinion driven ejection device of the present invention has a simple structure, small size, light weight, convenient operation, and full functions, thereby ensuring a low failure rate and easy operation and maintenance.

[0016] In summary, when the rack-and-gear driven bullet-removing device of the present invention is used, the rear and front clamping disks in the middle of the sleeve can be clamped on the muzzle brake and the gun barrel to ensure that the rack-and-gear driven bullet-removing device is installed in the muzzle brake and the axial displacement center point is correct, and then the upper and lower grab hooks are caught on the outer side of the inner wall of the second air chamber of the muzzle brake, and then the hand crank is turned, the worm shaft will drive the worm wheel to rotate through the worm, and the worm wheel drives the active gear to rotate through the gear shaft, and the active gear 3 can drive the rack 2 to move forward or backward, and the push rod connected to the rack as a whole moves together with the bullet-removing device shield in the gun barrel, thereby pushing the projectile stuck in the gun barrel to withdraw backward, so as to achieve the purpose of releasing the bullet. Therefore, the rack-and-gear driven bullet-removing device of the present invention has the characteristics of being able to quickly remove bullets from the gun, greatly improving the efficiency of the gun's bullet-removing, reducing the time required for the operation, and reducing the labor intensity of the operator.

[0017] The rack and pinion driven ejection device of the present invention will be described in further detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the rack-and-pinion driven bullet-removing device of the present invention;

[0019] Figure 2 for Figure 1 Top view of the . DETAILED DESCRIPTION

[0020] The rack-and-gear driven ejection device of the present invention is as follows: Figure 1 and Figure 2 As shown, it includes a hollow sleeve 1 arranged in the horizontal direction at the front and rear, a rack 2 is inserted in the sleeve 1 with clearance fit, the rack 2 is meshed with the driving gear 3, the driving gear 3 is set and fixed on the right end of the gear shaft 4, the left side of the gear shaft 4 is set with a worm wheel 5, the worm wheel 5 is meshed with the worm 7 on the worm shaft 6, the worm shaft 6 and the gear shaft 4 are rotatably mounted on the worm gear box housing 8 through sliding bearings, and the worm gear box housing 8 is fixedly connected to the rear of the sleeve 1;

[0021] The upper part of the worm shaft 6 extends upward and out of the worm gear housing 8, and a hand crank 9 is installed on the top of the worm shaft 6;

[0022] The front part of the rack 2 extends forward and out of the sleeve 1, the front end of the rack 2 is connected to the rear end of the push rod 10, and the front end of the push rod 10 is connected to the middle part of the rear end of the ejector shield 11;

[0023] When the crank handle 9 is operated, the worm shaft 6 drives the worm wheel 5 to rotate through the worm 7, and the worm wheel 5 drives the driving gear 3 to rotate through the gear shaft 4. The driving gear 3 can drive the rack 2 to move forward or backward. The push rod 10 connected as a whole with the rack 2 moves together with the ejector shield 11 in the gun barrel, thereby pushing the projectile stuck in the gun barrel to exit backward, thereby achieving the purpose of releasing the ejection.

[0024] An upper ear plate 12 is provided at the top of the sleeve 1 in front of the worm gear housing 8, and a lower ear plate 13 is provided at the bottom of the sleeve 1 in front of the worm gear housing 8. The upper ear plate 12 is hingedly connected to the inner end of an upper swing rod 14, and the outer end of the upper swing rod 14 is hingedly connected to the inner end of an upper hook rod 15. The outer end of the upper hook rod 15 is provided with an upper hook 16 bent in the counterclockwise direction.

[0025] The lower ear plate 13 is hingedly connected to the inner end of the lower swing rod 17, the outer end of the lower swing rod 17 is hingedly connected to the inner end of the lower hook rod 18, and the outer end of the lower hook rod 18 is provided with a lower grab hook 19 bent in the counterclockwise direction;

[0026] The upper grab hook 16 and the lower grab hook 19 are used to cooperate with the second air chamber of the muzzle brake. When in use, the upper grab hook 16 and the lower grab hook 19 are conveniently and quickly hung on the outer side of the inner wall of the second air chamber of the muzzle brake, thereby ensuring that a firm and reliable support force is provided for the gear rack driven ejection device during the ejection operation;

[0027] A rear locking plate 20 is fixed to the sleeve portion of the sleeve 1 located in front of the upper ear plate 12 and the lower ear plate 13 , and a front locking plate 21 is fixed to the sleeve portion of the sleeve 1 located in front of the rear locking plate 20 .

[0028] The rear retaining plate 20 and the front retaining plate 21 designed and installed in the middle of the sleeve 1 are used to retain the sleeve 1 on the muzzle brake and the gun barrel to ensure that the rack-and-pinion driven ejection device is installed in the muzzle brake and the axial displacement center point is correct. The front retaining plate 21 is responsible for limiting the position in coordination with the gun barrel, and the rear retaining plate 20 is responsible for limiting the position in coordination with the muzzle brake. The rear retaining plate 20 and the front retaining plate 21 work together to ensure the reliable fastening of the rack-and-pinion driven ejection device in the lateral direction.

[0029] As a further improvement of the present invention, the sleeve 1 is a square steel pipe, the worm gear housing 8 is fixedly connected to the sleeve 1 by bolts, and the front end of the rack 2 is fixedly connected to the rear end of the push rod 10 by threaded connection.

[0030] When the rack-and-gear driven bullet-removing device of the present invention is in use, the rear locking plate 20 and the front locking plate 21 in the middle of the sleeve 1 can be clamped on the muzzle brake and the gun barrel to ensure that the installation position and the axial displacement center point position of the rack-and-gear driven bullet-removing device in the muzzle brake are correct, and then the upper grab hook 16 and the lower grab hook 19 are hooked on the outer side of the inner wall of the second air chamber of the muzzle brake, and then the crank handle 9 is turned, the worm shaft 6 will drive the worm wheel 5 to rotate through the worm 7, and the worm wheel 5 drives the driving gear 3 to rotate through the gear shaft 4, and the driving gear 3 can drive the rack 2 to move forward or backward, and the push rod 10 connected as a whole with the rack 2 moves together with the bullet-removing device shield 11 in the gun barrel, thereby pushing the projectile stuck in the gun barrel to withdraw backward, so as to achieve the purpose of releasing the bullet.

[0031] In the existing artillery shell ejection operation, because the center point of the handle rod cannot be fixed, it usually requires two people to cooperate to complete a set of knocking actions. One person holds the handle rod and the other swings the hammer to knock. The hand-held person tries to control the handle rod near the center point of the barrel to ensure the correct axial displacement. One person swings the hammer correctly to ensure the knocking effect. Afterwards, they replace each group one by one and continue to knock until the shell is ejected. This method is the most commonly used method of ejection.

[0032] The above operations take a long time, are simple and rough, have low work efficiency, and are easy to damage equipment. Specifically:

[0033] First, it is time-consuming and laborious to build a small operating platform, which increases the labor intensity of personnel for no reason. Especially in plateau areas, the decline in physical strength of personnel is more prominent.

[0034] Second, the operator must be strong enough to ensure the knocking effect, and the coordination process can easily cause safety hazards to personnel and equipment.

[0035] Third, each time a bullet is ejected, a handlebar is inevitably damaged, which reduces the equipment's integrity rate; fourth, because the operator has no reliable force point under his feet, especially in slippery rain, snow or freezing weather, it is more likely to cause personnel to fall or equipment to be damaged. These are contrary to our requirement to achieve "quick attack and quick withdrawal" of equipment on the battlefield, and are not conducive to the "battlefield effectiveness" of equipment.

[0036] With well-trained personnel, it was found through repeated stopwatch timing that the entire process, starting from the first action of picking up and assembling the parts to the action of withdrawing the shell, takes about 120 minutes. The whole process is time-consuming and labor-intensive, and requires 8 personnel to be divided into 4 groups to rotate and work together to complete the process alternately.

[0037] In addition, the above method has many steps and involves many repetitive actions, which also increases the labor intensity of front-line artillery operators.

[0038] Compared with the prior art, the rack-and-pinion driven ejection device of the present invention has the following advantages:

[0039] 1. The rack-and-pinion driven bullet-removing device of the present invention can be used with a vehicle and placed in a vehicle tool box before the improvement. After the improvement, the size is smaller and the folding design is convenient for carrying, and there is no need to consider the problem of difficulty in carrying;

[0040] 2. The rack-and-pinion driven shell ejection device of the present invention realizes the mechanized operation of artillery shell ejection, shortening the time from about 120 minutes to about 10 minutes, saving about 110 minutes, saving shell ejection time, simplifying the shell ejection procedure, greatly improving shell ejection efficiency, and having great significance for battlefield survival.

[0041] 3. The rack and pinion driven bullet ejection device of the present invention solves the problems of difficult and slow bullet ejection, difficulty in combining supporting tooling, multiple procedures, large number of manpower, and complicated movements, thereby ensuring safety, simplifying the labor intensity of personnel, and thus improving work efficiency.

[0042] 4. The rack and pinion driven ejection device of the present invention has a simple structure, small size, light weight, convenient operation, and full functions, thereby ensuring a low failure rate and easy operation and maintenance.

[0043] Therefore, the rack and pinion driven bullet ejection device of the present invention has the characteristics of being able to quickly eject bullets from artillery, greatly improving the efficiency of ejecting bullets from artillery, reducing the time required for the operation, and at the same time reducing the labor intensity of the operators.

Claims

1. The rack-and-pinion driven ejection device is characterized by: The invention comprises a hollow sleeve (1) arranged in the horizontal direction at the front and rear ends, a rack (2) inserted in the sleeve (1) by means of clearance fit, the rack (2) meshing with a driving gear (3), the driving gear (3) being fixedly mounted on the right end of a gear shaft (4), a worm wheel (5) being mounted on the left side of the gear shaft (4), the worm wheel (5) meshing with a worm (7) on a worm shaft (6), the worm shaft (6) and the gear shaft (4) being rotatably mounted on a worm gear box housing (8) via sliding bearings, and the worm gear box housing (8) being fixedly connected to the rear of the sleeve (1); The upper part of the worm shaft (6) extends upward and out of the worm gear housing (8), and a hand crank (9) is installed at the top end of the worm shaft (6); The front part of the rack (2) extends forward and out of the sleeve (1), the front end of the rack (2) is connected to the rear end of the push rod (10), and the front end of the push rod (10) is connected to the middle part of the rear end of the ejector shield (11); An upper ear plate (12) is provided at the top end of the sleeve (1) located in front of the worm gear housing (8), and a lower ear plate (13) is provided at the bottom end of the sleeve (1) located in front of the worm gear housing (8). The upper ear plate (12) is hingedly connected to the inner end of an upper swing rod (14), and the outer end of the upper swing rod (14) is hingedly connected to the inner end of an upper hook rod (15), and the outer end of the upper hook rod (15) is provided with an upper hook (16) bent in a counterclockwise direction; The lower ear plate (13) is hingedly connected to the inner end of the lower swing rod (17), the outer end of the lower swing rod (17) is hingedly connected to the inner end of the lower hook rod (18), and the outer end of the lower hook rod (18) is provided with a lower grab hook (19) bent in the counterclockwise direction; A rear locking plate (20) is fixed to the sleeve located in front of the upper ear plate (12) and the lower ear plate (13) on the sleeve (1), and a front locking plate (21) is fixed to the sleeve located in front of the rear locking plate (20) on the sleeve (1).

2. The rack-and-pinion driven ejection device according to claim 1, characterized in that: The sleeve (1) is a square steel pipe, the worm gear housing (8) and the sleeve (1) are fixedly connected by bolts, and the front end of the rack (2) and the rear end of the push rod (10) are fixedly connected by threaded connection.

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