CN108088309A - Magazine-type connects crossbow automatically - Google Patents

Abstract

The invention discloses a magazine-type automatic continuous crossbow. A linear motor is installed above the crossbow arm, a string pulling mechanism for automatically pulling and releasing the string is installed on the mover slider of the linear motor, and an automatic power supply is installed at the bottom of the crossbow arm. The quiver of the arrow uses the cooperation of the linear motor and the quiver to realize the automatic winding of the crossbow and the automatic launch of the arrow. The magazine-type automatic continuous crossbow of the present invention uses a reciprocating linear motor to drive the string-drawing mechanism to automatically complete the tensioning and releasing of the bowstring, so that it can realize automatic and continuous firing of arrows by cooperating with the arrow box, and effectively improves the firing speed of the crossbow. , has the characteristics of simple structure, convenient operation, labor-saving use, high emission accuracy, etc., and solves the problems existing in the prior art.

Description

Magazine automatic repeater

technical field

The invention relates to a sports competition apparatus, in particular to a wheel-type automatic repeating crossbow.

Background technique

The crossbow is developed from the improvement of the bow. The invention of the crossbow can be traced back to the middle period of the Warring States Period, with a history of more than 2,300 years. The traditional crossbow is mainly composed of three parts: crossbow, crossbow arm and crossbow arm. The top surface of the crossbow arm is longitudinally provided with arrow slots for placing arrows and providing guidance for arrow firing. The crossbow is mounted horizontally on the front end of the crossbow arm. The crossbow machine is installed at the rear of the crossbow arm, and the crossbow arm is used to support the bow and brace the strings, and the user holds the crossbow machine in his hand to draw the strings and launch. The operation of this kind of traditional crossbow is to pull the bow string and fasten it on the crossbow through the strength of the arm first, then put the arrow on the arrow slot near the bow string, pull the crossbow after aiming, and use the crossbow to launch the arrow. This traditional crossbow can only shoot a single arrow each time, and has the defects of long reloading time and cumbersome operation.

Contents of the invention

The purpose of the present invention is to provide a magazine-type automatic repeater crossbow capable of automatic winding and continuous firing of arrows.

The technical solution of the present invention is: a magazine-type automatic repeating crossbow, comprising a crossbow arm, a crossbow mounted on the front end of the crossbow arm, and a crossbow butt fixed on the rear end of the crossbow arm. A linear motor is installed above the crossbow arm, and the linear motor includes a stator guide rail extending forward and backward and a mover slider that reciprocates linearly along the stator guide rail, and the two ends of the stator guide rail are respectively fixed on the crossbow support and crossbow It is arranged parallel to the crossbow arm, and two groups of synchronous string pulling mechanisms are installed symmetrically on the left and right sides of the mover slider. There is a driving rod between the grippers that synchronously drives a pair of grippers through an incomplete gear meshing mechanism. At the front end of the driving rod, there is a Y-shaped fork opening up and down for matching with the top of the crossbow string. The rear end of the driving rod is connected with a locking swing rod through a ratchet structure, which is used to lock the driving rod during string pulling so as to keep the pair of grippers in a buckled state. Drive the locking pendulum to swing to release the electromagnet of the drive rod; the bottom of the arrow slot in the crossbow arm is also provided with an arrow supply slot downward, and the bottom of the crossbow arm is installed with arrows that snap into the arrow slot from bottom to top The arrow box is filled with a number of vertically arranged arrows, and the arrow spring and the arrow plate are provided at the bottom of the arrow box, and the follower slider is installed on the crossbow arm. The opening and closing of the opening and closing of the notches of the arrow slots makes a single arrow enter the baffle plate of the arrow slots; a crossbow machine for controlling the power supply of the electromagnet and the linear motor is also installed in the crossbow.

The quiver is mainly composed of a rectangular box body with an open top and linear motors that are fixedly installed on the front and rear sides of the box body at relative intervals and operate intermittently synchronously.

The distance between the stator guide rail of the linear motor and the arrow groove on the crossbow arm is equivalent to the outer diameter of the arrow.

The gear rod is fixedly installed on the bottom of the mover slider, and the bottom surface of the gear rod is attached to the surface of the arrow groove.

The incomplete gear meshing mechanism is composed of an incomplete gear integrally arranged on the surface of the gripper and a toothed rack separately arranged on the top and bottom surfaces of the drive rod and simultaneously engaged and connected to a pair of grippers.

A spring tube is also sleeved outside the drive rod, and the body of the spring tube is fixed on the mover slider. The inner diameter of the spring tube is larger than the outer diameter of the drive rod. The flange close to the inner wall of the spring barrel is provided with an inturned edge close to the surface of the drive rod at the rear end of the spring barrel, and a return spring is set on the drive rod in the spring barrel, and the two ends of the return spring are mounted on the top respectively. between the flange on the surface of the driving rod and the inversion edge at the rear end of the spring barrel.

A return spring and a limit pin cooperating with the locking swing bar are installed on the mover slider.

Proximity switches for controlling the reverse movement of the linear motor are respectively installed at the front and rear ends of the arrow groove on the crossbow arm.

There are two arrow grooves arranged side by side, and two rows of arrows in the arrow box are arranged correspondingly.

The magazine-type automatic continuous crossbow of the present invention uses a reciprocating linear motor to drive the string-drawing mechanism to automatically complete the tensioning and releasing of the bowstring, so that the automatic and continuous firing of arrows can be realized by cooperating with the arrow box, which effectively improves the firing speed of the crossbow. , has the characteristics of simple structure, convenient operation, labor-saving use, high emission accuracy, etc., and solves the problems existing in the prior art.

Description of drawings

Fig. 1 is the structural representation of magazine type automatic repeating crossbow of the present invention;

Fig. 2 is an enlarged view of the string pulling mechanism on the mover slider in Fig. 1 .

Detailed ways

The specific structure of the magazine-type automatic repeater of the present invention will be described in detail below in conjunction with the accompanying drawings. As shown in Figures 1 and 2, the crossbow generally includes a crossbow arm 1, a crossbow (not shown in the figure) installed on the front end of the crossbow arm 1, and a crossbow support 2 fixed on the rear end of the crossbow arm 1. There are arrow slots extending forward and backward on the surface. In order to realize the automatic stringing and firing of arrows, the magazine-type automatic repeating crossbow of the present invention needs to be installed on the basis of the existing crossbow. , wherein, the mechanism for automatically tensioning the bowstring is that a linear motor is installed above the crossbow arm 1, and the linear motor includes a stator guide rail 5 that is parallel to the crossbow arm 1 and extends forward and backward, and a mover that reciprocates linearly along the stator guide rail 5 The two ends of the slider 6 and the stator guide rail 5 are respectively fixed on the crossbow support 2 and the crossbow, and two groups of synchronous string pulling mechanisms 7 are installed symmetrically on the left and right sides of the mover slider 6, and each group of pulling string mechanisms 7 Each includes a pair of grippers 12 that are rotated and assembled at the front end of the mover slider 67 at intervals up and down, and a corresponding pair of grippers 12 is respectively driven synchronously by an incomplete gear meshing mechanism between the corresponding pair of grippers 12. The driving rod 14 is relatively rotated and buckled together. The front end of the driving rod 14 is provided with a Y-shaped fork 17 that is opened up and down for contact with the bowstring of the crossbow. The rear end of the driving rod 14 is connected by a ratchet structure 15. There is a locking swing bar 18 for locking the driving rod 14 during string pulling so that the pair of grippers 12 remain engaged, and a driving lock is installed on the rear end of the locking swing bar 18 on the mover slider 6 The anti-sway lever 18 swings to release the electromagnet 19 that drives the lever 14 . In this embodiment, the reciprocating motion of the mover slider 6 on the linear motor is realized by two proximity switches 24, 25 installed on the crossbow arm 1 at the front and rear ends of the arrow slot. When moving forward or backward to the two ends of the arrow groove, two proximity switches 24, 25 are respectively triggered, and the two proximity switches 24, 25 immediately change the current direction of the linear motor to change the moving direction of the mover slider 6; 12 and the incomplete gear engagement mechanism between the driving rod 14 is composed of an incomplete gear 13 which is arranged at the root of a pair of grippers 12 and a pair of racks 16 which are respectively arranged on the top and bottom surfaces of the driving rod 14. The gear rack 16 provided on the top and bottom surfaces is meshed with the incomplete gear 13 of the pair of grippers 12 and is in transmission connection at the same time. When the driving rod 14 moves back and forth, it can drive the pair of grippers 12 to rotate synchronously and reversely to complete mutual buckling or opening. action; the ratchet structure 15 is composed of two ratchet racks respectively arranged on the rear end of the driving rod 14 and the front surface of the locking swing rod 18. When the driving rod 14 and the locking swing rod 18 produce relative displacements, the driving rod 14 and the ratchet bar on the locking swing bar 18 are engaged with each other, thereby fixing the position of the driving rod 14 and realizing the locking of the driving rod 14. When the electromagnet 19 drives the locking swing rod 18 to swing, the driving rod 14 and the locking The ratchet racks on the swing rods 18 are separated from each other, thereby releasing the driving rod 14; in order to ensure the reliability of cooperation between the two locking swing rods 18 and the corresponding driving rods 14, they are respectively installed on both sides of the mover slider 6 There is a return spring 21 and a limit pin 20 cooperating with the corresponding lock swing lever 18. The limit pin 20 cooperates with the electromagnet 19 to limit the swing angle of the lock swing lever 18. The return spring 21 is mainly used to ensure that the lock swing lever 18 and the ratchet rack on the corresponding driving rod 14 are reliably engaged and locked; the synchronous action between the pulling string mechanisms 7 on the left and right sides of the mover slider 6 can be achieved between the two driving rods 14 and between the two locking pendulums. The connecting rods are fixed horizontally between the rods 18 respectively. The two drive rods 14 can also be synchronized through the coaxial assembly between the corresponding pair of grippers 12. The two locking swing rods 18 can also be synchronized through the corresponding electromagnet 19. connections are synchronized.

In order to further ensure the action reliability of the pulling string mechanism 7, a spring tube 22 is respectively set on the left and right sides of the mover slider 6 corresponding to the two driving rods 14, and the cylinder body of the spring tube 22 is fixed on the mover slider 6. On the side of the spring barrel 22, the inner diameter of the spring barrel 22 is larger than the outer diameter of the driving rod 14, and a circle of flanges close to the inner wall of the spring barrel 22 is protruded on the surface of the driving rod 14, and a flange near the inner wall of the spring barrel 22 is provided on the rear end of the spring barrel 22. 14, the inversion edge on the surface of the spring tube 22 is located on the driving rod 14, and the return spring 23 is sleeved. between. By putting the spring tube outside the driving rod, on the one hand, the direction of motion of the driving rod can be guided; Reset quickly afterward, and drive the pair of grasping claws 12 that connects to open completely by incomplete gear mechanism, avoid affecting the cooperation of bowstring and drive bar when pulling string next time.

In the present invention, the string pulling mechanism 7 installed on the mover slider 6 is basically flush with the arrow groove on the crossbow arm 1. After the linear motor is started, the mover slider 6 first drives the string pulling mechanism 7 installed on both sides toward The position of the front end crossbow moves until the Y-shaped fork 17 at the front end of the driving rod 14 on both sides touches the bowstring of the crossbow. Because the bowstring of the crossbow has a higher strength after being tightened, the mover slider 6 moves forward. , the driving rods 14 installed on both sides are blocked by the bowstring and stop moving, while the pair of grippers 12 connected to the driving rod 14 continue to move with the slider 6, and then rotate synchronously through the meshing of incomplete gears. The corresponding pair of grippers 12 are snapped together so as to buckle the bowstring. At the same time, the locking swing bar 18 corresponding to the drive rod 14 also moves forward with the mover slider 6, thereby passing through each other under the action of the spring 21. The meshed teeth lock the drive rod 14. After the position of the drive rod 14 is locked, the position of the pair of grippers 12 meshed with the drive rod 14 is also locked. When the mover slider 6 on the linear motor reverses When moving backward, the bowstring of the crossbow is pulled back by the string-drawing mechanism 7 provided on the left and right sides of the mover slider 6. The electromagnet 19 simultaneously drives the two locking swing rods 18 to move, and the two locking swing rods 18 are simultaneously disengaged from the locking of the corresponding driving rod 14, and the driving rod 14 is disengaged from the locked state so that the corresponding pair of grippers 12 are also disengaged from the locking at the same time. The claw 12 is pushed away under the rebound effect of the crossbow to be released.

In order to realize the automatic supply of arrows, the bottom of the arrow slot in the back section of the crossbow arm 1 is also provided with an arrow supply slot downward, and the arrow box 3 that is snapped into the crossbow arm 1 from bottom to top is installed in the arrow supply slot. The quiver 3 is filled with a number of vertically arranged arrows 4, and the quiver is mainly composed of a rectangular box body with an open top and linear motors 30 and 31 that are fixedly installed on the front and rear sides of the box body and operate intermittently at relative intervals. Through the synchronous intermittent action of the two linear motors 30 and 31, the arrows 4 are ejected upward one by one into the arrow slots.

In a specific application, the arrow box 3 can also use the arrow support spring and the arrow support plate installed at the bottom to push the arrow 4 outward. Open and close the notch of the arrow groove so that the single arrow 4 enters the baffle plate 8 in the arrow groove, the baffle plate 8 is fixed on the rear part of the mover slider 6 and slides along the surface of the arrow groove on the crossbow arm 1, When the mover slider 6 moves forward and prepares to buckle the string, the baffle plate 8 moves forward simultaneously with the mover slider 6, thereby sealing the notch of the arrow slot and preventing the arrow 4 in the arrow box 3 from entering In the arrow groove, when the mover slider 6 buckles the bowstring and pulls it back, the baffle plate 8 moves backward with the mover slider 6 to open the notch for the arrow groove, so that the arrows in the arrow box 3 Arrow 4 enters the arrow groove. In order to ensure that only one arrow can enter the arrow groove at a time, in this embodiment, the distance between the stator guide rail 5 of the linear motor above the crossbow arm 1 and the arrow groove on the crossbow arm 1 is the same as that of the arrow 4 The outer diameters are equivalent, so that when the notch of the arrow slot is opened each time, the arrow 4 that is pushed out from the arrow box 3 is blocked by the stator guide rail 5 and only one arrow 4 can be placed in the arrow. in the slot. In specific applications, the baffle plate 8 can also be directly guided and installed on the crossbow arm 1. The front end of the baffle plate 8 is set to push and cooperate with the mover slider 6, and a spring for driving and reset is provided at the rear of the baffle plate 8. This structure also can be when mover slider 6 moves forward, pushes baffle plate 8 forward by spring and closes the notch for arrow slot, and when mover slider 6 moves backward, baffle plate 8 is moved backward Push to open the notch for the arrow feeder.

The magazine-type automatic repeating crossbow of the present invention still adopts the traditional control mode of installing the crossbow 10 on the crossbow 2, and the crossbow 10 controls the power supply connection of the linear motor and the electromagnet 19 through the connected spring contact 11, and pulls the crossbow After the machine 10, the linear motor starts to work, and the mover slider 6 moves forward until the drive rods 14 on both sides of the mover slider 6 touch the bowstring of the crossbow, and the bowstring is fastened by the two pairs of grippers 12 connected. The string pulling mechanism 7 on the mover slider 6 fastens the bowstring and simultaneously triggers the proximity switch 25 located at the front end. The proximity switch 25 controls the linear motor to work in reverse, so that the mover slider 6 drives the bowstring to move backwards and tighten the bowstring. When the sub-slider 6 triggers the proximity switch 24 at the rear, the proximity switch 24 controls the electromagnet 19 to release the drive rod 14 while controlling the linear motor to work in reverse, and then the arrow is launched under the rebound of the crossbow, thereby Realized the automatic winding and automatic launching of the crossbow.

Claims (9)

1. A magazine-type automatic continuous crossbow, comprising a crossbow arm, a crossbow mounted on the front end of the crossbow arm and a crossbow butt fixed on the rear end of the crossbow arm, the top surface of the crossbow arm is provided with arrow grooves extending forward and backward, it is characterized in that, A linear motor is installed above the crossbow arm, and the linear motor includes a stator guide rail extending forward and backward and a mover slider that reciprocates linearly along the stator guide rail. The two ends of the stator guide rail are respectively fixed on the crossbow support and crossbow. It is arranged parallel to the crossbow arm, and two sets of synchronous string pulling mechanisms are installed symmetrically on the left and right sides of the mover slider. There is a driving rod between the claws that synchronously drives a pair of grippers through an incomplete gear meshing mechanism. At the front end of the driving rod, there is a Y-shaped fork opening up and down for matching with the top of the crossbow string. The rear end of the rod is connected with a locking swing rod through a ratchet structure, which is used to lock the driving rod during pulling the string so that the pair of grippers can be kept engaged. There is an electromagnet that drives the locking pendulum to swing so as to release the drive rod; in the crossbow arm, there is also an arrow supply groove downward at the rear part of the arrow groove, and an arrow slot that is inserted into the crossbow arm from bottom to top is installed in the arrow supply groove. Arrow box, the arrow box is filled with a number of vertically arranged arrows, and the bottom of the arrow box is equipped with an arrow support spring and an arrow support plate that eject the arrows outwards, and a follower slider is installed on the crossbow arm. The opening and closing of the opening and closing of the notches of the arrow slots makes a single arrow enter the baffle plate of the arrow slots; a crossbow machine for controlling the power supply of the electromagnet and the linear motor is also installed in the crossbow. 2. The magazine-type automatic repeating crossbow according to claim 1, characterized in that, the quiver is mainly composed of a rectangular box body with an open top and a linear motor that is fixedly installed on the front and rear sides of the box body at relative intervals and operates synchronously and intermittently. . 3 . The magazine-type automatic repeating crossbow according to claim 1 , wherein the distance between the stator guide rail of the linear motor and the arrow groove on the crossbow arm is equivalent to the outer diameter of the arrow. 4 . 4 . The magazine-type automatic repeater according to claim 1 , wherein the stop rod is fixedly installed on the bottom of the mover slider, and the bottom surface of the stop rod is attached to the surface of the arrow groove. 5. The magazine type automatic repeater according to claim 1, characterized in that, the incomplete gear meshing mechanism is composed of an incomplete gear integrally arranged on the surface of the gripper and separately arranged on the top and bottom surfaces of the drive rod and simultaneously connected with a Consists of a gear rack connected to the gripper meshing drive. 6. The magazine-type automatic continuous crossbow according to claim 1, characterized in that, a spring tube is also sleeved outside the driving rod, and the cylinder body of the spring tube is fixed on the moving element slider. The inner diameter of the spring barrel is larger than the outer diameter of the driving rod. A circle of flanges close to the inner wall of the spring barrel is protruded on the surface of the driving rod, and an inturned edge close to the surface of the driving rod is provided at the rear end of the spring barrel. A return spring is sheathed on the drive rod, and the two ends of the return spring are installed respectively between the flange on the surface of the drive rod and the inturned edge at the rear end of the spring barrel. 7 . The magazine-type automatic repeater according to claim 1 , wherein a return spring and a limit pin cooperating with the locking swing bar are installed on the mover slider. 8 . 8 . The magazine-type automatic repeating crossbow according to claim 1 , wherein proximity switches for controlling the reverse movement of the linear motor are respectively installed on the front and rear ends of the arrow slot on the crossbow arm. 9. The magazine-type automatic repeating crossbow according to claim 1, characterized in that, two arrow slots are arranged side by side, and two rows of arrows in the arrow box are correspondingly arranged.