CN213031629U - Ratchet boosting gun with non-return device - Google Patents

Ratchet boosting gun with non-return device Download PDF

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Publication number
CN213031629U
CN213031629U CN202020787869.6U CN202020787869U CN213031629U CN 213031629 U CN213031629 U CN 213031629U CN 202020787869 U CN202020787869 U CN 202020787869U CN 213031629 U CN213031629 U CN 213031629U
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China
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gun
gun shell
shell
spring
rod
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CN202020787869.6U
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张同合
孙传祝
刘玉凤
李艳平
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Zibo Kechuang Medical Instrument Co ltd
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Zibo Kechuang Medical Instrument Co ltd
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Abstract

The utility model provides a take ratchet boosting rifle of non return device, its characterized in that: a supporting plate and a sleeve are arranged in the gun body, and an arc groove is arranged above the gun body; the trigger is provided with a transmission pin, two ends of a trigger shaft are supported on the gun body, one end of a spring I is hung on a pin shaft I of the gun body, and the other end of the spring I is hung on a pin shaft IV of the trigger; the middle part of the rocker arm is sleeved and hung on a pin shaft II of the gun shell II, two ends of a connecting rod I are respectively hinged to a transmission pin and one end of a rocker arm, a connecting rod II is respectively hinged to the transmission pin and one end of the rocker arm, and two ends of a connecting rod III are respectively hinged to the other end of the rocker arm and one end of the rocker arm; the pawl is hinged in the middle of the rocker and is jointed with the ratchet wheel coaxial with the gear; the gear is meshed with a boosting rod inserted into the sleeve I and the sleeve II, the button is installed on the outer surfaces of the gun shell I and the gun shell II, the unlocking arm is supported on the lug I, and two ends of the pull rod are respectively hinged to lugs III at two ends of the unlocking arm; the clamping frame is arranged at a U-shaped gap between the gun shell I and the gun shell II. The utility model discloses reliable operation, convenient operation, handsome in appearance.

Description

Ratchet boosting gun with non-return device
Technical Field
The utility model provides a take ratchet boosting rifle of non return device belongs to medical instrument and equipment field, and the boosting pressurization work when mainly used is to the internal injection liquid of patient also can be used to work such as dispense before the infusion.
Background
When a lying-in woman is produced, in order to shorten the production process and reduce the pain of the lying-in woman, the disposable cervical dilatation balloon is generally placed in the uterus and the vagina of the lying-in woman, and then liquid is slowly injected into the disposable cervical dilatation balloon through the infusion tube to gradually expand the disposable cervical dilatation balloon, so that the effect of dilating the cervical orifice and the vagina is achieved, and the smooth production of a fetus is facilitated.
At present, most of common injection boosting instruments are plunger type injectors, injection and input of liquid are completed by manual pushing of nurses, labor intensity is high, and the quantity of the input liquid is not easy to control accurately. When the amount of the liquid which is input is too large, the pregnant woman can be more painful, otherwise, the function of expanding the cervical orifice and the vagina can not be achieved. Therefore, Zibo scientific medical instrument limited has invented a ratchet boosting gun with a non-return device (application number: 202010080463.9), which can complete the injection of liquid well. However, the force-reducing operation system of the booster is realized by pulling the trigger and further by the transmission of parts such as a chain, a shifting fork and the like, and the force-reducing operation system can only be used for injecting liquid, when the liquid is sucked, an operator needs to hold the gun handle of the gun body with one hand, hold the plunger rod and the transmission plate with the other hand and forcibly pull the plunger rod and the transmission plate in a direction away from the gun barrel so as to suck the liquid into the syringe, the liquid is still sucked in a laborious manner, and the quantity of the sucked liquid is not easy to be accurately controlled. Therefore, a self-priming injection booster (application No. 202010174806.8) and a suction and injection dual-purpose injection booster (application No. 202010207454.1) are invented, and the suction and injection work of liquid can be well completed. However, the boosting pressurization of the inventions completes the power transmission between the boosting sleeve and the boosting rod through the elastic deformation of the clamping sleeve, and the phenomenon that the clamping sleeve clamps the push rod tightly or the push rod is clamped between the clamping sleeve and the boosting rod during return stroke is easily caused by the elastic change of the clamping sleeve or the change of the friction coefficient between the clamping sleeve and the boosting rod, so that the work failure of a transmission system is caused. Therefore, a self-locking ratchet boosting gun (application number: 202020662069.1) which adopts a ratchet pawl and gear mechanism to transmit power is invented, and the problems existing in the invention are thoroughly solved. However, tests show that the pawl of the invention utilizes the torque generated by gravity relative to the hinge point of the rocker to keep the engagement with the ratchet wheel, and when the boosting gun cannot keep the upright state, the engagement of the pawl and the ratchet wheel can be influenced, so that the work is failed; during the liquid suction process, negative pressure can be generated in the liquid bottle, and during the injection process, the pressure in the disposable cervical dilatation balloon is higher, namely, no matter liquid suction or injection is carried out, different positive and negative pressure differences are generated between the inside of the injection tube of the injector matched with the boosting gun and the liquid bottle or the disposable cervical dilatation balloon, so that when a trigger of the boosting gun returns, the liquid in the injection tube flows back to the liquid bottle, or the liquid in the disposable cervical dilatation balloon flows back to the injection tube; the invention requires an operator to hold the gun with one hand and press the joint of the infusion tube sleeved on the matched conical tube at the front end of the injection tube with the other hand or the joint of the infusion tube sleeved on the conical tube at the front end of the injection tube with the disposable cervical dilatation balloon extending outwards, so the operation is very inconvenient.
In view of the current situation of the medical equipment industry, a ratchet boosting gun with a non-return device, which is simple and convenient to operate and reliable in work, is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can overcome the problem that prior art and equipment exist, and easy operation is convenient, the reliable operation take ratchet boosting rifle of check device.
The technical scheme is as follows: the automatic locking device comprises a gun body, a transmission system, a self-locking device, a non-return device and a clamping device, wherein the whole gun body is divided into a middle gun body, a front gun barrel, a tail part far away from the rear upper part of the gun barrel and a gun handle positioned below the tail part, and the gun body comprises a gun shell I and a gun shell II which are bilaterally symmetrical, a supporting plate and a sleeve; the inner cavity of the joint part of the gun barrel and the gun body is provided with a bearing plate I, the bearing plate I is provided with a round hole, the inner cavity of the joint part of the tail part and the gun body is provided with a bearing plate II, the hole on the bearing plate II is on the basis that the diameter is equal to that of the round hole on the bearing plate I and the axis is coaxial, 2 bus bars on the normal direction of the joint surface of the gun shell I and the gun shell II respectively protrude a part towards the center direction of the hole, and the edge lines of the protruding parts on the two sides are parallel to the joint surface of the gun shell; a sleeve I is arranged between the support plate I and the foremost end of the inner cavity of the gun barrel, a sleeve II is arranged between the support plate II and the rearmost end of the inner cavity of the tail part, the axes of the sleeve I and the sleeve II are coaxial with the axis of a round hole in the support plate I, the outermost ends of the tail parts of the gun shell I and the gun shell II are provided with round holes, the centers of the round holes are positioned on the axis of the sleeve II, and the diameter of the round holes is equal to the inner diameter of; the inner surfaces of the gun body parts of the gun shell I and the gun shell II respectively extend 1 pin shaft I inwards, and the axes of the 2 pin shafts I are coaxial; an arc groove which is smaller than a semicircle is arranged in the middle of the upper portion of the gun body, the length of the arc groove is smaller than the total length from the front end of the gun barrel to the tail portion of the gun shell, the axis of the arc groove is parallel to the common axis of the sleeve I and the sleeve II, U-shaped clamps are arranged at two ends of the arc groove, and U-shaped openings of the 2 clamps face upwards; the inner surface of one side, close to the tail part, of the gun body of the gun shell I extends inwards for 1 boss which is cylindrical, the inner surface of the middle part of the gun body of the gun shell II also extends inwards for 1 boss, blind holes coaxial with the axes of the bosses are arranged on the outer surfaces of the gun shell I and the gun shell II corresponding to the bosses on the inner surfaces, and through holes are arranged between the bosses and the bottoms of the blind holes; the inner surface of the upper part of the gun body of the gun shell II, which is close to the tail part, extends inwards to form 1 pin shaft II; the inner surface of the joint of the gun body and the gun handle of the gun shell I of the gun body, which is close to one side of the gun barrel, extends inwards by 1 pin shaft III, and the gun handle part of the gun shell I is provided with a long groove; the inner surface of the gun body and the gun handle joint of the gun shell II, which is far away from the gun barrel, also extends 1 pin shaft III inwards, the inner surface of the gun handle part of the gun shell II extends 2 mutually parallel lugs I inwards, 1 circular hole with the axis vertical to the plane of the lug I is respectively arranged on the 2 lugs I, the axes of the 2 circular holes are coaxial, reinforcing ribs are respectively arranged on the outer sides of the 2 lugs I, and the reinforcing ribs are respectively provided with a circular hole; u-shaped notches are arranged above barrel parts of the gun shell I and the gun shell II and at the joint surface of the gun shell I and the gun shell II, lugs II are arranged on the inner surface of an arc groove arranged above a gun body of the gun shell II, which is close to the barrel, and round holes are arranged on the lugs II; the transmission system is divided into 2 transmission routes, namely a route I and a route II, wherein the route I comprises a boosting rod, a trigger shaft, a transmission pin, a spring I, a gear, a ratchet wheel, a pawl, a rocker and a connecting rod I, the generatrixes on two sides of the cylindrical boosting rod are respectively cut off along the length direction of the boosting rod, 2 formed planes are mutually parallel, 2 planes are all parallel to the axis of the boosting rod, and the shape of the cross section of each cut off part on two sides of the boosting rod is the same as that of a hole on a support plate II; one of the arc surfaces between the 2 parallel planes of the push-aid rod is processed into a rack shape; the boosting rod is inserted into the sleeve II from the tail part of the gun body, the part, facing the gun handle, of the gun body in a tooth shape sequentially penetrates through the support plate II and the support plate I and then is inserted into the sleeve I, and 2 planes on two sides of the boosting rod are respectively attached to edge lines of protruding parts on two sides of a hole in the support plate II; the other end of the push-aid rod, which is far away from the sleeve I, is provided with a U-shaped transmission plate, and the U-shaped opening of the transmission plate is upward; the trigger is rhombic, two side faces of the extended water caltrop with longer length, which are vertical to the direction of a rhombic plane, are respectively in a concave arc shape and a convex arc shape, the middle part of the trigger is provided with a round hole with an axis vertical to the rhombic plane, the water caltrop extended out of the diagonal of the longer water caltrop is also provided with a round hole, and the axes of 2 round holes are parallel; the middle part of the trigger is close to one end of the longer water chestnut, one side of the convex cambered surface close to the longer water chestnut extends out of 1 pin shaft IV to two sides along the direction vertical to the diamond plane, 2 pin shafts IV are coaxial, and the axis of the pin shaft IV is parallel to the axis of a round hole in the middle part of the trigger; the trigger is arranged in the middle of the trigger shaft through a circular hole in the middle, a transmission pin is arranged in another circular hole of the trigger, two ends of the trigger shaft are respectively supported at the gun body parts of the gun shell I and the gun shell II close to the gun barrel, and when one end of the trigger extending out of the longer water caltrop faces the gun handle, the trigger extends out of the concave cambered surface of the longer water caltrop and faces one side of the gun barrel; the spring I is a torsion spring and is provided with 1 piece of spring I which is symmetrical in a left-handed and right-handed manner, spring wires at two ends of 2 pieces of spring I respectively extend out of 1 section of straight line section along the radial direction of the spring I, the tail ends of the straight line sections are provided with a winding lug, the winding lugs at one end of each 1 piece of spring I which is symmetrical in the left-handed and right-handed manners are respectively sleeved and hung on a pin shaft I arranged on the inner surfaces of the gun shell I and the gun shell II, and the winding lugs at the other end are respectively sleeved and hung on a pin; the gear is in a sector shape, the modulus of the gear is equal to that of a rack machined on the boosting rod, the gear is arranged in the middle of a gear shaft, 1 ratchet wheel is arranged on each of two sides of the gear on the gear shaft, and the tooth shapes of the outer edges of the 2 ratchet wheels are opposite in direction; round holes with parallel axes are formed in the middle and two ends of the rocker, one end of the pawl is in an olecranon shape, the other end of the pawl extends out of the 1-section arc-shaped rod, the concave surface of the arc-shaped rod faces the extending direction of the olecranon, and the pawl is hinged in the round hole in the middle of the rocker; the 2 rocker arms hinged with the pawls are sleeved outside the 2 ratchet wheels on the gear shaft through a round hole at one end of each rocker arm, the pawls on the rocker arms face one side of each ratchet wheel, the extending ends of the two ends of the gear shaft penetrating through the rocker arms are respectively supported in the middle parts of a gun shell I and a gun body of a gun shell II of the gun body, and the gears and the boosting rod are meshed with the tooth forms of the parts between the supporting plate I and the supporting plate II; one end of a connecting rod I is hinged to one end, far away from the gear shaft, of the rocker, a pawl pressure spring is installed at the hinged position between the connecting rod I and the rocker, and the other end of the connecting rod I is sleeved at one end, installed on a trigger, of a transmission pin; the line II of the transmission system comprises an auxiliary push rod, a trigger shaft, a transmission pin, a spring I, a gear, a ratchet wheel, a pawl, a rocker arm and a connecting rod, wherein round holes with parallel axes are formed in the two ends and the middle part of the rocker arm, and the rocker arm is sleeved on a pin shaft II extending out of the inner surface of the gun shell II through the round hole in the middle part; one end of a connecting rod II is hinged in a round hole at one end of the rocker arm, and the other end of the connecting rod II is sleeved at the other end, different from the route I, of a transmission pin arranged on a trigger; one end of a connecting rod III is hinged in a round hole at the other end of the rocker arm, the other end of the connecting rod III is hinged at one end, away from the gear shaft, of another 1 rocker arm different from the route I, and a pawl pressure spring is arranged at the hinged position between the connecting rod III and the rocker arm; the self-locking device comprises a limiting cover, a button, a sliding block, a limiting rod and a spring II, wherein a plurality of axial grooves are uniformly formed in an inner hole of the cylindrical limiting cover, one end of the limiting cover is provided with a round hole with the diameter smaller than the inner diameter of the cylinder, 2 sections of spiral surfaces with the same rotation direction are arranged between every two adjacent axial grooves at the other end, and the excircle of the end is provided with a connecting flange; the buttons comprise a liquid suction button and an injection button which have the same structural shape and size and different colors, the 2 buttons are all in a disc shape, and the diameter of each disc is smaller than the diameter of an inner hole of the limiting cover and larger than the diameter of an inner hole of one end of the limiting cover, which is not provided with the connecting flange; the center of the disk of the 2 kinds of buttons extends out of a boss 1 to one end, the diameter of the boss is smaller than the diameter of an inner hole at one end of the limiting cover, which is not provided with the connecting flange, a blind hole is arranged at the center of the other end far away from the boss, and the axis of the blind hole and the axis of the boss are coaxial with the axis of the disk; the end face of one end far away from the boss uniformly extends outwards along the axial direction to form a plurality of triangular teeth, and the number of the triangular teeth is 2 times of that of the inner hole grooves of the limiting cover; a plurality of cylindrical bosses uniformly extend outwards from the disc-shaped excircle of the button along the radial direction, the number of the cylindrical bosses is equal to the number of grooves in the inner hole of the limiting cover, the diameter of each cylindrical boss is smaller than the width of the groove in the inner hole of the limiting cover, and the axis of each cylindrical boss and the corresponding tooth tip of the triangular tooth are all positioned on the same generatrix of the disc-shaped outer cylindrical surface of the button; the center of each of two ends of the disk-shaped sliding block extends outwards to form 1 section of cylindrical section with equal diameter and different length, the outer diameter of the disk is equal to that of the disk of the button, and the outer diameter of the cylindrical section extending out of the two ends is smaller than the inner diameter of a blind hole arranged at one end of the button far away from the boss; the disc-shaped end surface of one end of the sliding block, which extends out of the longer cylindrical section, uniformly extends outwards along the axial direction to form a plurality of triangular teeth, and the number of the triangular teeth is equal to that of the triangular teeth extending out of the end surface of the button, which is far away from the boss; a plurality of cylindrical bosses uniformly extend outwards from the disc-shaped excircle of the sliding block along the radial direction, the number and the diameter of the cylindrical bosses are equal to those of the cylindrical bosses extending from the disc-shaped excircle of the button, and the axes of the cylindrical bosses and the corresponding tooth tips of the triangular teeth are staggered by 1-3 degrees in the circumferential direction of the sliding block; the limiting rod is in a 3-step cylindrical shape, the outer diameter of the large end of the limiting rod is equal to the outer diameter of the disc of the sliding block, and the outer diameter of the small end of the limiting rod is smaller than the diameter of a through hole formed between the inner end face of the boss of the gun shell I and the bottom of the blind hole; the small end of the limiting rod extends out of 1 section of conical section, the center of the end face of the large end is provided with a blind hole, and the inner diameter of the blind hole is larger than the outer diameter of the cylindrical section extending out of the two ends of the sliding block; the spring II is a spiral cylindrical compression spring, 2 springs II are respectively arranged in blind holes at positions, corresponding to bosses on the inner surface, of the gun shell I or the gun shell II, the gun shell I or the gun shell II is arranged on the outer surface, and the small ends of the 2 limiting rods respectively penetrate through the 2 springs II and then respectively penetrate through holes, arranged between the inner end surface of the bosses on the inner surface and the bottoms of the blind holes, of the gun shell I or the gun shell II and then are inserted into the gun body; the liquid suction button 1 and the injection button 1 are respectively arranged in the limiting covers 2, cylindrical bosses extending out of the disc-shaped excircle of the button are respectively and correspondingly positioned in axial grooves of inner holes of the limiting covers, and the bosses extending out of the disc center of the button face the end away from the limiting covers and provided with connecting flanges; 2 sliding blocks are respectively arranged in 2 limiting covers, triangular teeth of the sliding blocks face to the button, and cylindrical bosses extending out of the outer circle of the sliding blocks are respectively and correspondingly positioned in axial grooves of inner holes of the limiting covers; the 1 limiting cover provided with the liquid suction button and the sliding block is arranged on the outer surface of the gun shell I after the end face compression spring II facing to the small end side from the large end of the limiting rod, the boss part of the limiting cover faces outwards, and the boss extending out of the center of the disc of the liquid suction button penetrates through a circular hole formed in the end part of the limiting cover and having a diameter smaller than the inner diameter of the cylinder and then extends out; the 1-piece limiting cover provided with the injection button and the sliding block is arranged on the outer surface of the gun shell II after compressing the spring II through the end face of the big end of the limiting rod towards the small end, the boss part of the limiting cover faces outwards, and the boss extending out of the center of the disc of the injection button penetrates through a circular hole arranged at the end part of the limiting cover and having a diameter smaller than the inner diameter of the cylinder and then extends out; the non-return device comprises a non-return claw, a non-return pressure spring, an unlocking arm, an unlocking shaft, a pull rod and a spring, wherein one end of the non-return claw is in an olecranon shape, the back surface of the olecranon is provided with a lug III, the lug III is provided with a round hole, one ends of 2 non-return claws far away from the olecranon are respectively hinged on a pin shaft III extending inwards on the inner surfaces of the gun shell I and the gun shell II, and when the olecranon of the non-return claw faces the ratchet wheel, the extending directions of the olecranons of the pawls which are respectively jointed with the same ratchet wheel of the 2 non-return claws; the hinged parts between the inner surfaces of the gun shell I and the gun shell II and the non-return claws are respectively provided with a non-return pressure spring; the middle part and two ends of the unlocking arm are provided with 3 round holes with mutually parallel axes, the axes of the 3 round holes are positioned in the same plane, 1 lug IV extends out to two sides along the axis direction of the round holes between the round hole at the middle part and the round hole at the end part of the unlocking arm, the end part of the lug IV is provided with a round hole, and one end of the unlocking arm, which is provided with the lug IV, extends out of 1 section of long arm along the length direction of the unlocking arm; the unlocking arm is sleeved in the middle of the unlocking shaft through a middle circular hole, and two ends of the unlocking shaft are supported on 2 mutually parallel lugs I on the inner surface of the gun shell II; the spring III and the spring IV are tension springs, one end of each of the 2 springs III is hung in a circular hole at the end part of a lug IV extending towards two sides of the unlocking arm, and the other end of each of the 2 springs III is hung in a circular hole of a reinforcing rib at the outer side of each of the 2 mutually parallel lugs I on the inner surface of the gun shell II; one end of each pull rod 2 is hinged in round holes at two ends of the unlocking arm, the other end of each pull rod is hung with a spring IV 1, and the other end of each spring IV is hung in a round hole of a lug III on the back of each non-return claw 2 on a pin shaft III on the inner surfaces of the gun shell I and the gun shell II; the clamping device comprises a clamping frame and a spring V, a bottom plate of the clamping frame is in a rectangular flat plate shape, the tail end of a straight arm extending outwards from the middle of the bottom plate along the normal direction of the bottom plate is provided with a U-shaped clamp, the straight arm of the clamping frame is close to the bottom plate, and the two sides of the straight arm respectively extend out of 1 section of supporting arm, the tail ends of the supporting arms are respectively provided with a limiting rod, the length direction of 2 limiting rods is perpendicular to the U-shaped plane of the U-shaped clamp, the plane where the 2 limiting rods are located is parallel to the rectangular plane of the bottom plate, the bottom surface of the bottom plate of the clamping frame, which is far; the straight arm part of the clamping frame is arranged between U-shaped notches at the joint surface of the gun shell I and the gun shell II, a bottom plate of the clamping frame is positioned in the gun body, 2 limiting rods of the clamping frame are positioned outside the gun body and are respectively tangent to the upper planes of the gun barrel parts of the gun shell I and the gun shell II, and the U-shaped plane of the U-shaped clamp is vertical to the length direction of the gun barrel; the spring V is an extension spring, one end of the spring V is hung in a circular hole on a lug V of the clamping frame, and the other end of the spring V is hung in a circular hole on a lug II on the inner surface of the gun shell II.
The utility model discloses on prior art basis, barrel and body joint portion inner chamber of the rifle body are equipped with bearing plate I, and are equipped with the round hole on the bearing plate I, afterbody and body joint portion inner chamber are equipped with bearing plate II, the hole on bearing plate II is on the basis that the diameter equals with the round hole diameter on bearing plate I, the axis is coaxial, 2 bus-bars on the joining surface normal direction of rifle shell I and rifle shell II respectively towards the central direction protrusion of hole a part, and the edge line of both sides protrusion is all on a parallel with the joining surface of rifle shell I and rifle shell II; a sleeve I is arranged between the support plate I and the foremost end of the inner cavity of the gun barrel, a sleeve II is arranged between the support plate II and the rearmost end of the inner cavity of the tail part, the axes of the sleeve I and the sleeve II are coaxial with the axis of a round hole in the support plate I, the outermost ends of the tail parts of the gun shell I and the gun shell II are provided with round holes, the centers of the round holes are positioned on the axis of the sleeve II, and the diameter of the round holes is equal to the inner diameter of; the inner surfaces of the gun body parts of the gun shell I and the gun shell II respectively extend 1 pin shaft I inwards, and the axes of the 2 pin shafts I are coaxial; an arc groove which is smaller than a semicircle is arranged in the middle of the upper part of the gun body, the radius of the arc groove is equal to half of the outer diameter of an injection tube of a matched 60ml injector, the length of the arc groove is smaller than the total length from the front end of a gun barrel to the tail part of a gun shell, and the axis of the arc groove is parallel to the common axis of the sleeve I and the sleeve II; the arc groove both ends are equipped with the clamp that is the U-shaped, and the U-shaped opening of 2 clamps up, and the syringe both ends clamp through the clamp in the arc groove of rifle body top, and the syringe stretches out the one end of circular cone pipe and keeps away from the direction of rifle body one end towards the barrel. The inner surface of one side, close to the tail part, of the gun body of the gun shell I extends inwards for 1 boss which is cylindrical, the inner surface of the middle part of the gun body of the gun shell II also extends inwards for 1 boss, blind holes coaxial with the axes of the bosses are arranged on the outer surfaces of the gun shell I and the gun shell II corresponding to the bosses on the inner surfaces, and through holes are arranged between the bosses and the bottoms of the blind holes; and the inner surface of the upper part of the gun body of the gun shell II, which is close to one side of the tail part, extends inwards to form 1 pin shaft II. The joint of the gun body and the gun handle of the gun shell I is close to the inner surface of one side of the gun barrel, and 1 pin shaft III extends inwards; the inner surface of the gun barrel side of the joint of the gun body and the gun handle of the gun shell II also extends inwards by 1 pin shaft III, the inner surface of the gun handle part of the gun shell II extends inwards by 2 mutually parallel lugs I, the 2 lugs I are respectively provided with round holes with axes vertical to the plane of the lugs I, the axes of the 2 round holes are coaxial, the outer sides of the 2 lugs I are respectively provided with reinforcing ribs, and the reinforcing ribs are respectively provided with round holes; the U-shaped gaps are formed in the positions, above the barrel parts of the gun shell I and the gun shell II, of the gun barrel parts and the joint surface of the gun shell I and the gun shell II, the inner surface of the arc groove formed in the position, close to the barrel, of the gun body of the gun shell II is provided with a lug II, and a round hole is formed in the lug II. A part of the bus at the two sides of the boosting rod is cut along the length direction of the boosting rod, 2 formed planes are parallel to each other, the 2 planes are parallel to the axis of the boosting rod, and the shape of the cross section of the boosting rod after the part of the bus is cut at the two sides of the boosting rod is the same as that of the hole in the support plate II; one of the arc surfaces between the 2 parallel planes of the push-aid rod is processed into a rack shape; the boosting rod is inserted into the sleeve II from the tail part of the gun body, the part, facing the gun handle, of the gun body in a tooth shape sequentially penetrates through the support plate II and the support plate I and then is inserted into the sleeve I, and 2 planes on two sides of the boosting rod are respectively attached to edge lines of protruding parts on two sides of a hole in the support plate II; the other end of the push-aid rod, which is far away from the sleeve I, is provided with a U-shaped transmission plate, the U-shaped opening of the transmission plate faces upwards, and the tail end, far away from the plunger, of the plunger rod of the matched injector is clamped in the U-shaped groove of the transmission plate. The two side surfaces of the extended long water caltrop of the rhombic trigger, which are vertical to the direction of the rhombic plane, are respectively in a concave arc shape and a convex arc shape, the middle part of the trigger is provided with a round hole of which the axis is vertical to the rhombic plane, the water caltrop extended out of the opposite angle of the long water caltrop is also provided with a round hole, and the axes of 2 round holes are parallel; the middle part of the trigger is close to one end of the longer water chestnut, one side of the convex cambered surface close to the longer water chestnut extends out of 1 pin shaft IV to two sides along the direction vertical to the diamond plane, 2 pin shafts IV are coaxial, and the axis of the pin shaft IV is parallel to the axis of a round hole in the middle part of the trigger; the trigger is installed in the middle of the trigger shaft through a round hole in the middle, a transmission pin is installed in another round hole of the trigger, two ends of the trigger shaft are respectively supported at the gun body position, close to the gun barrel, of the gun shell I and the gun shell II, and when one end, extending out of the longer water caltrop, of the trigger faces the gun handle, the concave cambered surface, extending out of the longer water caltrop, of the trigger faces one side of the gun barrel. The spring I is respectively 1 piece of left and right handed symmetry, and the spring silk at 2I both ends of spring respectively outwards stretches out 1 section straightway along spring I radial, and the straightway tail end all is equipped with the book ear, and the book ear of 1 each I one end of spring of left and right handed symmetry overlaps respectively to be hung on setting up in the round pin axle I of I internal surface of gun case I and II rifle cases, and the book ear of the other end overlaps respectively to be hung on setting up in the round pin axle IV of trigger both sides face. The modulus of the sector gear is equal to that of the rack processed on the push-aid rod, the gear is arranged in the middle of the gear shaft, 1 ratchet wheel is respectively arranged on two sides of the gear on the gear shaft, and the tooth-shaped directions of the outer edges of the 2 ratchet wheels are opposite. Round holes with parallel axes are formed in the middle and two ends of the rocker, one end of the pawl is in an olecranon shape, the other end of the pawl extends out of the 1-section arc-shaped rod, the concave surface of the arc-shaped rod faces the extending direction of the olecranon, and the pawl is hinged in the round hole in the middle of the rocker; the 2 rocking bars hinged with the pawls are sleeved outside the 2 ratchet wheels on the gear shaft through a round hole at one end of each rocking bar, and the pawls on the rocking bars face one side of the ratchet wheels; the two ends of the gear shaft penetrate through the extending ends of the rocker and then are respectively supported in the middle of the gun body of the gun shell I and the gun body of the gun shell II, and the gear and the boosting rod are meshed in a tooth form at the part between the supporting plate I and the supporting plate II; one end of a connecting rod I is hinged to one end, far away from the gear shaft, of the rocker, a pawl pressure spring is installed at the hinged position between the connecting rod I and the rocker to guarantee that the pawl is always jointed with the ratchet wheel, and the other end of the connecting rod I is sleeved at one end, installed on the trigger, of a transmission pin. Round holes with parallel axes are formed in the middle and two ends of the rocker arm, and the round hole in the middle is sleeved on a pin shaft II extending out of the inner surface of the gun shell II; one end of a connecting rod II is hinged in a round hole at one end of the rocker arm, and the other end of the connecting rod II is sleeved at the other end, different from the route I, of a transmission pin arranged on a trigger; one end of a connecting rod III is hinged in a round hole at the other end of the rocker arm, the other end of the connecting rod III is hinged at one end, which is different from the route I, of another 1 rocker arm away from the gear shaft, and a pawl pressure spring is arranged at the hinged position between the connecting rod III and the rocker arm so as to ensure that the pawl is always jointed with the ratchet wheel. The inner hole of a limiting cover of the self-locking device is uniformly provided with a plurality of axial grooves, one end of the limiting cover is provided with a round hole with the diameter smaller than the inner diameter of the cylinder, 2 sections of helicoids with the same rotating direction are arranged between every two adjacent axial grooves at the other end, and the excircle of the end is provided with a connecting flange. The button comprises a liquid suction button and an injection button, the 2 buttons are all in a disc shape, and the diameter of each disc is smaller than the diameter of an inner hole of the limiting cover and larger than the diameter of an inner hole of one end of the limiting cover, which is not provided with the connecting flange; the center of the disk of the 2 kinds of buttons extends out of a boss 1 to one end, the diameter of the boss is smaller than the diameter of an inner hole at one end of the limiting cover, which is not provided with the connecting flange, a blind hole is arranged at the center of the other end far away from the boss, and the axis of the blind hole and the axis of the boss are coaxial with the axis of the disk; a plurality of triangular teeth uniformly extend outwards along the axial direction from the end face of one end far away from the boss; the disc excircle of button evenly outwards stretches out a plurality of cylindrical bosss along radial, and cylindrical boss diameter is less than the groove width of spacing lid hole, and each cylindrical boss axis all is located the same generating line of the disc outer face of cylinder of button with the prong of the triangle-shaped tooth that corresponds. The centers of two ends of the sliding block respectively extend outwards to form 1 section of cylindrical section with equal diameter and different length, the outer diameter of the disc shape is equal to that of the disc shape of the button, and the outer diameter of the cylindrical section extending out of the two ends is smaller than the inner diameter of a blind hole arranged at one end of the button far away from the boss; the disc-shaped end surface of one end of the sliding block, which extends out of the longer cylindrical section, uniformly extends out of a plurality of triangular teeth along the axial direction; the disc-shaped excircle of the sliding block uniformly extends outwards to form a plurality of cylindrical bosses along the radial direction, and the axes of the cylindrical bosses and the corresponding tooth tips of the triangular teeth are staggered by 1-3 degrees in the circumferential direction of the sliding block. The limiting rod is in a 3-step cylindrical shape, the outer diameter of the large end of the limiting rod is equal to the outer diameter of the disc of the sliding block, and the outer diameter of the small end of the limiting rod is smaller than the diameter of a through hole formed between the inner end face of the boss of the gun shell I and the bottom of the blind hole; the small end of the limiting rod extends out of 1 section of conical section, the center of the end face of the big end is provided with a blind hole, and the inner diameter of the blind hole is larger than the outer diameter of the cylindrical section extending out of the two ends of the sliding block. The spring II is a spiral cylindrical compression spring, 2 springs II are respectively arranged in blind holes at positions, corresponding to bosses on the inner surface, of the gun shell I or the gun shell II, the gun shell I or the gun shell II is arranged on the outer surface, and the small ends of the 2 limiting rods respectively penetrate through the 2 springs II and then respectively penetrate through holes, arranged between the inner end surface of the bosses on the inner surface and the bottoms of the blind holes, of the gun shell I or the gun shell II and then are inserted into the gun body; the liquid suction button 1 and the injection button 1 are respectively arranged in the limiting covers 2, cylindrical bosses extending out of the disc-shaped excircle of the button are respectively and correspondingly positioned in axial grooves of inner holes of the limiting covers, and the bosses extending out of the disc center of the button face the end away from the limiting covers and provided with connecting flanges; 2 slider packs into 2 respectively in spacing covers, the triangle-shaped tooth of slider all is towards the button, and the cylindrical boss that the slider excircle stretches out corresponds the axial groove that is located spacing lid hole respectively. The 1 limiting cover provided with the liquid suction button and the sliding block is arranged on the outer surface of the gun shell I after the end face compression spring II facing to the small end side from the large end of the limiting rod, the boss part of the limiting cover faces outwards, and the boss extending out of the center of the disc of the liquid suction button penetrates through a circular hole formed in the end part of the limiting cover and having a diameter smaller than the inner diameter of the cylinder and then extends out; the 1-piece limiting cover provided with the injection button and the sliding block is installed on the outer surface of the gun shell II through the end face compression spring II on the side of the small end of the large end of the limiting rod, the boss part of the limiting cover faces outwards, and the boss extending out of the center of the disk of the injection button penetrates through the circular hole formed in the end part of the limiting cover and is smaller than the inner diameter of the cylinder and then extends out. One end of a non-return claw of the non-return device is in an olecranon shape, the back of the olecranon is provided with a lug III, the lug III is provided with a round hole, one end of each of 2 non-return claws far away from the olecranon is respectively hinged on a pin shaft III extending inwards on the inner surfaces of a gun shell I and a gun shell II, and when the olecranon of the non-return claws faces a ratchet wheel, the extending directions of the olecranon of pawls, which are respectively jointed with the same ratchet wheel, of the 2 non-return claws are opposite relative to the extending direction of the; and the hinged parts between the inner surfaces of the gun shell I and the gun shell II and the non-return claws are provided with non-return pressure springs so as to ensure that the non-return claws are always jointed with the ratchet wheel on the premise of not receiving other external forces. Round holes are formed in the middle and two ends of the unlocking arm, the axes of the 3 round holes are located in the same plane, 1 lug IV extends out of the middle round hole and 1 end round hole of the unlocking arm from two sides along the axis direction of the round holes respectively, round holes are formed in the end parts of the lugs IV, and one end, provided with the lugs IV, of the unlocking arm extends out of 1 section of long arm along the length direction of the unlocking arm; the unlocking arm is sleeved in the middle of the unlocking shaft through a middle circular hole, and two ends of the unlocking shaft are supported on 2 mutually parallel lugs I on the inner surface of the gun shell II; after the gun shell I is buckled with the gun shell II, the long arm of the unlocking arm extending outwards penetrates through the long groove formed in the gun handle part of the gun shell I and then extends outwards. One end of each spring III is hung in a circular hole at the end part of a lug IV extending towards two sides of the unlocking arm, and the other end of each spring III is hung in a circular hole of a reinforcing rib at the outer side of each lug I in parallel on 2 pieces on the inner surface of the gun shell II; one end of each of 2 pull rods is hinged in circular holes at two ends of the unlocking arm, the other end of each of the 2 pull rods is hung with 1 spring IV, and the other end of each of the 2 springs IV is hung in a circular hole of a lug III hinged on the back of each of 2 non-return claws on the pin shaft III on the inner surfaces of the gun shell I and the gun shell II. Clamping device's holding frame bottom plate is the dull and stereotyped shape of rectangle, the straight arm end that the bottom plate middle part outwards stretched out along the bottom plate normal direction is equipped with the U-shaped card, the straight arm of holding frame is close to bottom plate department and respectively stretches out 1 section supporting arm to both sides, and the supporting arm end all is equipped with spacing stick, the U-shaped plane of 2 spacing stick's length direction perpendicular to U-shaped cards, and the place plane of 2 spacing sticks is parallel with the rectangle plane of bottom plate, the bottom surface that the U-shaped card was kept away from to the bottom plate of holding frame is equipped with lug V, and be equipped with the round hole on the lug V. The straight arm part of the clamping frame is arranged between U-shaped notches at the joint surface of the gun shell I and the gun shell II, a bottom plate of the clamping frame is positioned in the gun body, 2 limiting rods of the clamping frame are positioned outside the gun body and are respectively tangent to the upper planes of the gun barrel parts of the gun shell I and the gun shell II, and the U-shaped plane of the U-shaped clamp is vertical to the length direction of the gun barrel; one end of the spring V is hung in a circular hole on a lug V of the clamping frame, and the other end of the spring V is hung in a circular hole on a lug II on the inner surface of the gun shell II.
The working principle is as follows: when the ratchet wheel boosting gun imbibition button with the non-return device and the injection button are not pressed, namely, in a reset state, the outer end face of the big end of the limiting rod is attached to the disc end face of one side of the slider, which is not provided with the triangular teeth, a certain cylindrical boss extending out of the disc excircle of the button and a certain cylindrical boss extending out of the disc excircle of the slider are positioned in the same axial groove of the inner hole of the limiting cover, and other cylindrical bosses are respectively positioned in the same axial groove in a pairwise correspondence manner. Because the axes of the cylindrical bosses of the sliding block and the corresponding tooth tips of the triangular teeth are staggered by 1-3 degrees in the circumferential direction of the sliding block, the tooth tips of the triangular teeth of the button and the sliding block after assembly are also staggered by 1-3 degrees. At the moment, the button, the slider and the limiting rod outwards withdraw to the limit position under the action of the spring II, namely, the outer end face of the large end of the limiting rod is attached to the end face of the disc at one side of the slider, which is not provided with the triangular teeth, the tooth tips of the triangular teeth of the slider are contacted with the tooth tips of the triangular teeth of the button and staggered by 1-3 degrees, and the end face of the disc, which extends out of one side of the boss at the center of the disc of the button, is attached to the inner end face of one end, which is not. The limiting rod retreating to the limit position is separated from an arc-shaped rod of a pawl hinged to the middle of the rocker, and the pawl is always in a normal joint state with the ratchet wheel under the pressure action of a pawl pressure spring.
When the imbibition button or the injection button is pressed for the first time, the button pushes the limiting rod to compress the spring II and then pushes the gun body. When the slide block reaches the limit position, each cylindrical boss of the slide block reaches the intersection point of the 1 st section of the spiral surface of the inner hole of the limit cover and the axial groove, namely the farthest point of the spiral surface from one end of the limit cover, which is not provided with the spiral surface. Because the tooth point of the button triangular tooth and the tooth point of the slider triangular tooth are staggered by 1-3 degrees, and the tooth point of the slider triangular tooth approaches to one end of the limiting cover, which is not provided with the spiral surface, towards the 1 st section of spiral surface relative to the staggered direction of the tooth point of the button triangular tooth, after the button is loosened, namely the button is pressed for resetting for the first time, the slider and the limiting rod outwards withdraw under the action of the spring II, and each cylindrical boss of the slider slides to the nearest point, namely the joint of 2 sections of spiral surfaces, of the 1 st section of spiral surface, away from one end, which is not provided with the spiral surface, of the 1 st section of spiral surface along the limiting cover. At the moment, the limiting rod is tangent to the convex surface of the arc-shaped rod of the pawl hinged to the middle of the rocker, namely, the pawl pressure spring is forcibly pulled open, so that the pawl cannot be contacted with the ratchet wheel.
When the imbibition button or the injection button is pressed down again, the button pushes the limiting rod compression spring II through the slider again and then pushes the gun body, and when the limiting position is reached, each cylindrical boss of the slider is located at the farthest point of the 2 nd section of the inner hole of the limiting cover, which is not provided with one end of the spiral surface, away from the limiting cover. Because the tooth point of the button triangular tooth positioned in the inner hole of the limit cover and the tooth point of the other triangular tooth of the slide block are staggered by 1-3 degrees, and the tooth point of the triangular tooth of the slide block approaches to one end of the limit cover, which is not provided with the spiral surface, towards the 2 nd section of the spiral surface relative to the staggered direction of the tooth point of the triangular tooth of the button, the button is loosened, namely the slide block and the limiting rod outwards withdraw under the action of the spring II after the button is pressed again for resetting, each cylindrical boss of the slide block slides to the axial groove of the inner hole of the limit cover along the 2 nd section of the spiral surface of the limit cover, so that the button, the slide block and the limiting rod can continuously withdraw to the limit position outwards, namely, the end surface of the disk, which extends out of one side of the boss, at the center of the button disk is. At the moment, the limiting rod is separated from an arc-shaped rod of a pawl hinged to the middle of the rocker, and the pawl is always in a normal joint state with the ratchet wheel under the pressure action of a pawl pressure spring.
When the spring III is lengthened and the tail end of the long arm extending out of the unlocking arm is moved upwards towards the gun body direction to the limit position, the limit on the check pawl is removed due to the fact that the distance between the pull rod hinged in the round hole at one end of the unlocking arm close to the extending long arm and the check pawl is shortened on the pin shaft III hinged on the gun shell I, and therefore the check pawl is always kept in normal joint with the ratchet wheel under the pressure action of the check pressure spring; and the distance between the pull rod hinged in the round hole at one end of the unlocking arm far away from the extended long arm and the return pawl on the pin shaft III hinged on the gun shell II is increased, namely the return pressure spring is forcibly pulled open through the spring IV, so that the return pawl cannot be jointed with the ratchet wheel. Conversely, when the tail end of the long arm extending out of the unlocking arm is moved downwards towards the gun handle to the limit position, the non-return claw hinged on the pin shaft III of the gun shell I cannot be jointed with the ratchet wheel, and the non-return claw hinged on the pin shaft III of the gun shell II can be normally jointed with the ratchet wheel. When the length direction of the unlocking arm is vertical to the joint surface of the gun shell I and the gun shell II, the distance between 2 round holes for hanging the spring III, namely the round hole at the end part of the lug IV of the unlocking arm and the round hole of the reinforcing rib at the outer side of the lug I on the inner surface of the gun shell II is the farthest, and the spring III is pulled to the longest; when the end of the long arm extending out of the unlocking arm is moved upwards or downwards to the limit position for releasing or ensuring the engagement of the check pawl and the ratchet wheel, the length of the spring III is restored to a certain extent, so that the spring III keeps the 2 limit positions unchanged.
The two ends of a matched injector are clamped in the arc groove above the gun body through the clamping hoop, one end of the injector extending out of the conical tube faces the direction of the barrel end far away from the gun body, and the tail end of the plunger rod of the injector far away from the plunger is clamped in the U-shaped groove of the transmission plate.
Liquid suction: the trigger is in an unbuckled state, namely a reset state, the liquid suction button on the outer side of the gun shell I is in a reset state after being pressed for the first time, the injection button on the outer side of the gun shell II is in a reset state after being not pressed or pressed again, and the tail end of the long arm extending out of the unlocking arm is moved downwards to the limit position. The clamping frame is pulled towards the direction far away from the injector, the spring V is stretched, and the joint at one end of the infusion tube is clamped in the U-shaped clamp of the clamping frame; after the clamping frame is loosened, the clamping frame drives the infusion tube joint to be close to the injector under the action of the spring V, the joint is sleeved on a conical tube at the front end of the injection tube, and the other end of the joint is inserted into a bottle filled with liquid. Because the imbibition button is in the reset state after being pressed for the first time, the injection button is in the reset state after not being pressed or being pressed again, and the tail end of the long arm extending out of the unlocking arm is moved downwards to the limit position, the limiting rod which is positioned at one side of the gun shell I and is matched with the imbibition button limits the pawl not to be jointed with the ratchet wheel, and the non-return claw hinged on the pin shaft III of the gun shell I also cannot be jointed with the ratchet wheel; and a limiting rod which is positioned on one side of the gun shell II and is matched with the injection button for use is separated from an arc-shaped rod of the pawl, the pawl is always in a normal joint state with the ratchet wheel under the pressure action of a pawl pressure spring, and the non-return claw hinged on a pin shaft III of the gun shell II is also in a normal joint state with the ratchet wheel.
Hold the stock, and when pulling the trigger, transmission system will pass through II transmission power of route, trigger compression spring I back promptly, drive connecting rod II through the driving pin, and the one end that the pulling rocking arm is close to rifle body top circular arc groove swings towards the direction of being close to the barrel, the other end of rocking arm is close to the rocker of II one side of rifle shell through connecting rod III pulling and is kept away from the one end of gear shaft and swings towards the direction of keeping away from the barrel, and then drive the pawl that is close to II one side of rifle shell, and stir the ratchet and rotate around the gear shaft, gear coaxial with the ratchet is then through the meshing with the boosting pole, and then drive the plunger rod and the plunger of supporting syringe and move towards the one end that the circular cone was kept. Negative pressure is formed due to the gradual increase of the volume of an inner cavity formed by the plunger, the inner diameter of the injection tube and the closed end of the injection tube, so that the liquid in the bottle is sucked into the injection tube.
After the liquid is sucked for one time, the trigger is released, the trigger is reset under the action of the spring I, and the end, far away from the gear shaft, of the rocker is driven to swing towards the direction close to the gun barrel according to the transmission route opposite to the transmission route. The ratchet wheel cannot be pulled to rotate reversely due to the unidirectional transmission of the ratchet wheel pawl, and meanwhile, the non-return claw hinged on the pin shaft III of the gun shell II is ensured to be always jointed with the ratchet wheel under the action of the non-return pressure spring, so that the ratchet wheel is prevented from rotating reversely due to the pressure difference between an injection tube of the injector and the liquid bottle. Thus, the boost rod as well as the plunger rod, plunger etc. will remain in place and the pressure of the liquid in the syringe will remain unchanged. When the trigger is fully reset, the trigger is pulled again to repeat the above action, i.e., a portion of the liquid is again drawn into the syringe. The liquid in the bottle can be continuously sucked into the injection tube by repeatedly pulling the trigger. When the quantity of the liquid in the injection tube reaches the requirement, the trigger is stopped to be pulled, and then the infusion tube joint sleeved on the conical tube of the injection tube is pulled out.
And (3) injection: the trigger is in the state of not pulling, reset, and the imbibition button in the rifle shell I outside is in the state of resetting after not pressing down or pressing down again, and the injection button in the rifle shell II outside is in the state of resetting after pressing down for the first time, moves the terminal of the long arm that the release arm stretches out to extreme position upwards. Pulling the clamping frame towards the direction far away from the injector, and clamping the infusion tube joint which is arranged in the parturient and extends out of the disposable cervical dilatation balloon in the U-shaped clamp of the clamping frame; after the clamping frame is loosened, the clamping frame drives the infusion tube joint to be close to the injector under the action of the spring V, and the joint is sleeved on a conical tube at the front end of the injection tube. Because the imbibition button is in the reset state after not pressing down or pressing down again, the injection button is in the reset state after pressing down for the first time, and move the end of the long arm extending out of the unlocking arm upwards to the limit position, therefore the limit rod which is positioned at one side of the gun shell I and used together with the imbibition button is separated from the arc-shaped rod of the pawl, namely the pawl is always in the normal joint state with the ratchet wheel under the pressure action of the pawl pressure spring, and the non-return claw hinged on the pin shaft III of the gun shell I is also in the normal joint state with the ratchet wheel; and a limiting rod which is positioned on one side of the gun shell II and is matched with the injection button for use limits that the pawl cannot be jointed with the ratchet wheel, and a non-return claw which is hinged on a pin shaft III of the gun shell II cannot be jointed with the ratchet wheel.
Hold the stock, and the trigger is pulled, transmission system will pass through I transmission power of route, trigger compression spring I back promptly, drive connecting rod I through the driving pin, and the one end that the rocker that is close to I one side of rifle shell kept away from the gear shaft swings towards the direction that is close to the barrel, and then drive the pawl that is close to I one side of rifle shell, and stir the ratchet and rotate around the gear shaft, gear coaxial with the ratchet then through the meshing with the boosting pole, and then drive the plunger rod and the plunger that supporting syringe through the driving plate and move towards the one end that the syringe is close to the circular cone, thereby because the increase of syringe inner chamber pressure and with some liquid injection in the syringe to in the internal disposable cervical dilatation sacculus of lying-in woman.
After the liquid injection is finished, the trigger is released, the trigger is reset under the action of the spring I, and the end, far away from the gear shaft, of the rocker is driven to swing towards the direction far away from the gun barrel according to the transmission route opposite to the transmission route. In a similar way, the pawl cannot stir the ratchet wheel to rotate, and the non-return claw hinged to the pin shaft III of the gun shell I can be always jointed with the ratchet wheel under the action of the non-return pressure spring, so that the ratchet wheel is prevented from being reversed due to the pressure difference between the disposable cervical dilatation balloon in the parturient body and the injection tube of the injector, the push-aid rod, the plunger piston and the like still stay in place, and the liquid pressure in the injection tube is kept unchanged. When the trigger is completely reset, the trigger can be pulled again to repeat the actions, namely, a part of liquid is injected into the disposable cervical dilatation balloon in the parturient body again. The liquid can be continuously injected into the disposable cervical dilatation balloon by repeatedly pulling the trigger for a plurality of times, and the injection is stopped when the cervix and the vagina of the puerpera reach the expected dilatation degree.
Compared with the prior art, the utility model, owing to add the pawl pressure spring, under the premise that the pawl is not limited by the position limiting rod, ensures the pawl and the ratchet wheel to be always normally jointed, thoroughly solves the problem of work failure caused by the change of the position of the boosting gun in the prior art; the non-return device is added, so that the problem of reverse rotation of a trigger return ratchet wheel and the gear is thoroughly solved, and the phenomenon that liquid in the injection tube flows back to the liquid bottle or liquid in the disposable cervical dilatation balloon flows back to the injection tube is avoided; because the clamping device is additionally arranged, the operation of holding the gun for imbibing or injecting can be completed by an operator with only one hand, so the operation is simple and convenient, and the adaptability is strong.
Drawings
Fig. 1 is an axonometric view of the embodiment of the present invention, in which the holding frame is in the injection position after the disposable cervical dilatation balloon-extending infusion tube connector is sleeved on the conical tube of the syringe injection tube, the imbibing button is in the reset state after not being pressed down or being pressed down again, the injection button is in the reset state after being pressed down for the first time, the trigger is pulled to the limit, the unlocking arm is pulled to the gun body direction in the middle of the gun body, that is, the non-return claw sleeved on the pin shaft iii of the gun housing i is in the engaging state with the pawl, the non-return claw sleeved on the pin shaft iii of the gun housing ii is in the separating state from the pawl, and the boosting rod is pushed to the position when the transmission plate is;
fig. 2 is an isometric view of the embodiment of the present invention shown in fig. 1, wherein the gun case i is hidden, the holding frame is at the injection position after the disposable cervical dilatation balloon is sleeved on the conical tube of the syringe injection tube, the imbibing button is at the reset state after not being pressed down or being pressed down again, the injection button is at the reset state after being pressed down for the first time, the trigger is reset, the unlocking arm is pulled to the gun body direction in the middle of the gun body, that is, the check pawl sleeved on the pin shaft iii of the gun case i is at the state of being engaged with the pawl, the check pawl sleeved on the pin shaft iii of the gun case ii is at the state of being separated from the pawl, and the boosting rod is pushed to the driving plate to be nearest to the gun body;
fig. 3 is an isometric view of the embodiment of the present invention shown in fig. 1 with the gun case i hidden, the holding frame in the pipette position after the pipette connector is sleeved in the conical tube of the syringe, the pipette button in the reset state after being pressed for the first time, the injection button in the reset state after being not pressed or pressed again, the trigger pulled to the limit, the unlocking arm pulled to the direction of the gun handle below the gun body, i.e., the check pawl sleeved on the pin shaft iii of the gun case i in the state of being separated from the pawl, the check pawl sleeved on the pin shaft iii of the gun case ii in the state of being engaged with the pawl, and the push-aid rod withdrawn to the farthest from the driving plate and the gun body;
FIG. 4 is an isometric view of the unlocking arm of the embodiment of FIG. 1 of the present invention;
figure 5 is an isometric view of the embodiment of the present invention shown in figure 1;
FIG. 6 is an isometric view of the drive train path I of the embodiment of FIG. 1 of the present invention in a reset condition after the pipette button has been depressed or depressed again, the injection button has been depressed for the first time, the trigger has been pulled to the limit, and the boost lever has been advanced until the drive plate is closest to the gun body;
FIG. 7 is an isometric view of the embodiment of FIG. 1 of the present invention showing the drive train path II when the pipette button is in a reset position after it is first depressed, the injection button is in a reset position after it is not depressed or depressed again, the trigger is pulled to the limit, and the boost lever is retracted to the point where the drive plate is farthest from the gun body;
FIG. 8 is an isometric view of the gun housing I of the embodiment of FIG. 1 according to the present invention;
FIG. 9 is an isometric view of the embodiment of gun housing II of FIG. 1 of the present invention;
FIG. 10 is an isometric view of the combination of the liquid suction button, the slider, the stop lever and the spring II when the liquid suction button of the embodiment of FIG. 1 of the present invention is first pressed to the limit state;
FIG. 11 is an isometric view of the combination of the liquid suction button, the slider, the stop lever and the spring II when the liquid suction button of the embodiment of FIG. 1 of the present invention is reset after being pressed for the first time;
figure 12 is an isometric view of the injection button, slider, stop bar and spring ii combination of the embodiment of figure 1 when reset after the injection button is depressed again.
Detailed Description
1. Gun shell I2, gun shell II 3, support plate I4, support plate II 5, sleeve I6, sleeve II 7, pin shaft I8, clamp 9, boss 10, pin shaft II 11, pin shaft III 12, lug I13, lug II 14, boosting rod 15, trigger 16, trigger shaft 17, driving pin 18, spring I19, gear 20, ratchet 21, pawl 22, rocker 23, connecting rod I24, driving plate 25, pin shaft IV 26, gear shaft 27, pawl compression spring 28, rocker arm 29, connecting rod II 30, connecting rod III 31, limit cover 32, slide block 33, limit rod 34, spring II 35, imbibition button 36, injection button 37, check claw 38, check compression spring 39, unlocking arm 40, unlocking shaft 41, pull rod 42, lug III 43, lug IV 44, spring III 45, unlocking arm 40, unlocking shaft 41, pull rod III 43, lug IV 44, Spring IV 46, clamping frame 47, spring V48, U-shaped clamp 49, limit rod 50 and lug V.
In the embodiment shown in fig. 1-12: a bearing plate I3 is arranged in an inner cavity of a joint part of a gun barrel and a gun body of the gun body, a round hole is formed in the bearing plate I3, a bearing plate II 4 is arranged in an inner cavity of a joint part of a tail part and the gun body, the hole in the bearing plate II 4 is on the basis that the diameter of the hole is equal to that of the round hole in the bearing plate I3 and the axis is coaxial, 2 bus bars on the normal direction of a joint surface of a gun shell I1 and a gun shell II 2 respectively protrude one part towards the center direction of the hole, and edge lines of the protruding parts on two sides are parallel to the joint surface of the gun shell; a sleeve I5 is arranged between the support plate I3 and the foremost end of the inner cavity of the gun barrel, a sleeve II 6 is arranged between the support plate II 4 and the rearmost end of the inner cavity of the tail part, the axes of the sleeve I5 and the sleeve II 6 are coaxial with the axis of a round hole in the support plate I3, round holes are formed in the outermost ends of the tail parts of the gun shell I1 and the gun shell II 2, the center of each round hole is located on the axis of the sleeve II 6, and the diameter of each round hole is equal to the inner diameter of the; the inner surfaces of the gun body parts of the gun shell I1 and the gun shell II 2 respectively extend 1 pin shaft I7 inwards, and the axes of the 2 pin shafts I7 are coaxial; an arc groove which is smaller than a semicircle is arranged in the middle of the upper part of the gun body, the radius of the arc groove is equal to half of the outer diameter of an injection tube of a matched 60ml injector, the length of the arc groove is smaller than the total length from the front end of a gun barrel to the tail part of a gun shell, and the axis of the arc groove is parallel to the common axis of the sleeve I5 and the sleeve II 6; the arc groove both ends are equipped with the clamp 8 that is the U-shaped, and 2U-shaped openings of clamp 8 up, and the syringe both ends clamp through clamp 8 in the arc groove of rifle body top, and the one end that the syringe stretches out the circular cone pipe keeps away from the direction of body of a gun one end towards the barrel. The inner surface of one side, close to the tail part, of the gun body of the gun shell I1 extends inwards for 1 boss 9 in a cylindrical shape, the inner surface of the middle part of the gun body of the gun shell II 2 also extends inwards for 1 boss 9, blind holes coaxial with the axis of the boss 9 are formed in the gun shell I1, the gun shell II 2 and the outer surfaces corresponding to the bosses 9 on the inner surfaces, and through holes are formed between the boss 9 and the bottom of the blind holes; the inner surface of the upper part of the gun body of the gun shell II 2 close to the tail part side extends inwards to form 1 pin shaft II 10. The inner surface of the joint of the gun body and the gun handle of the gun shell I1, which is close to one side of the gun barrel, extends inwards for 1 pin shaft III 11, and the gun handle of the gun shell I1 is provided with a long groove; the inner surface of the gun body and the gun handle joint of the gun shell II 2, which is far away from the gun barrel, also extends inwards to form 1 pin shaft III 11, the inner surface of the gun handle part of the gun shell II 2 extends inwards to form 2 mutually parallel lugs I12, round holes with axes vertical to the plane of the lugs I12 are respectively arranged on the 2 lugs I12, the axes of the 2 round holes are coaxial, reinforcing ribs are arranged on the outer sides of the 2 lugs I12, and the round holes are respectively arranged on the reinforcing ribs; the barrel part top of rifle shell I1 and rifle shell II 2, the composition surface department of rifle shell I1 and rifle shell II 2 all are equipped with the U-shaped breach, and the arc groove that the rifle body top of rifle shell II 2 set up is close to barrel department internal surface and is equipped with lug II 13, and is equipped with the round hole on lug II 13. A part of the generating line on the two sides of the push-assisted rod 14 is cut along the length direction of the push-assisted rod 14, 2 planes are formed and are parallel to each other, the 2 planes are parallel to the axis of the push-assisted rod 14, and the shape of the cross section of the two sides of the push-assisted rod 14 after a part of the two sides are cut is the same as that of the hole in the support plate II 4; one of the arc surfaces between the 2 parallel planes of the push-aid rod 14 is processed into a rack shape; the push-aid rod 14 is inserted into the sleeve II 6 from the tail part of the gun body, the part of the gun handle, facing the gun body, of the tooth form sequentially penetrates through the support plate II 4 and the support plate I3 and then is inserted into the sleeve I5, and 2 planes on two sides of the push-aid rod 14 are respectively attached to edge lines of protruding parts on two sides of a hole in the support plate II 4; the other end of the push-aid rod 14, which is far away from the sleeve I5, is provided with a U-shaped transmission plate 24, the U-shaped opening of the transmission plate 24 faces upwards, and the tail end, far away from the plunger, of the plunger rod of the matched syringe is clamped in the U-shaped groove of the transmission plate 24. The two side surfaces of the rhombus with longer length extending out of the rhombic trigger 15, which are vertical to the direction of the rhombus plane, are respectively in a concave arc shape and a convex arc shape, the middle part of the trigger 15 is provided with a round hole with the axis vertical to the rhombus plane, the rhombus extending out of the diagonal angle of the longer rhombus is also provided with a round hole, and the axes of 2 round holes are parallel; the middle part of the trigger 15 is close to one end of the longer water chestnut, one side of the convex cambered surface close to the longer water chestnut extends out of 1 pin shaft IV 25 to two sides along the direction vertical to the diamond plane, 2 pin shafts IV 25 are coaxial, and the axis of the pin shaft IV 25 is parallel to the axis of the round hole in the middle part of the trigger 15; the trigger 15 is arranged in the middle of a trigger shaft 16 through a circular hole in the middle, a transmission pin 17 is arranged in another circular hole of the trigger 15, two ends of the trigger shaft 16 are respectively supported at the gun body parts of the gun shell I1 and the gun shell II 2 close to the gun barrel, and when one end of the trigger 15 extending out of the longer water caltrop faces the gun handle, the concave cambered surface of the trigger 15 extending out of the longer water caltrop faces one side of the gun barrel. The spring I18 is symmetrical in a left-handed mode and a right-handed mode and comprises 1 spring, spring wires at two ends of the 2 spring I18 radially and outwards extend out of 1 section of straight line section along the spring I18, the tail end of the straight line section is provided with a lug, the lugs at one end of the 1 spring I18 symmetrical in the left-handed mode and the right-handed mode are respectively sleeved and hung on a pin shaft I7 arranged on the inner surfaces of the gun shell I1 and the gun shell II 2, and the lugs at the other end of the 1 spring I18 symmetrical in the left-handed mode and the right-handed mode are respectively. The module of the sector gear 19 is equal to the module of the rack processed on the push-aid rod 14, the gear 19 is installed in the middle of the gear shaft 26, 1 ratchet wheel 20 is respectively installed on two sides of the gear 19 on the gear shaft 26, and the tooth-shaped directions of the outer edges of 2 ratchet wheels 20 are opposite. Round holes with parallel axes are formed in the middle and two ends of the rocker 22, one end of the pawl 21 is in an olecranon shape, the other end of the pawl extends out of the 1-section arc-shaped rod, the concave surface of the arc-shaped rod faces the extending direction of the olecranon, and the pawl 21 is hinged in the round hole in the middle of the rocker 22; 2 rocker arms 22 hinged with the pawls 21 are sleeved outside the 2 ratchet wheels 20 on the gear shaft 26 through round holes at one ends of the rocker arms 22, and the pawls 21 on the rocker arms 22 face one side of the ratchet wheels 20; the two ends of the gear shaft 26 penetrate through the rocker 22 and then extend out of the two ends to be respectively supported in the middle parts of the gun shell I1 and the gun shell II 2 of the gun body, and the gear 19 is meshed with the part, located between the supporting plate I3 and the supporting plate II 4, of the push-aid rod 14 in a tooth form; one end of a connecting rod I23 is hinged to one end, far away from the gear shaft 26, of the rocker 22, a pawl pressure spring 27 is arranged at the hinged position between the connecting rod I23 and the rocker 22 so as to ensure that the pawl 21 is always jointed with the ratchet wheel 20, and the other end of the connecting rod I23 is sleeved at one end, mounted on the trigger 15, of the transmission pin 17. Round holes with parallel axes are formed in the middle and two ends of the rocker arm 28, and the round hole in the middle is sleeved on a pin shaft II 10 extending out of the inner surface of the gun shell II 2; one end of a connecting rod II 29 is hinged in a round hole at one end of the rocker arm 28, and the other end of the connecting rod II is sleeved at the other end, different from the route I, of the transmission pin 17 arranged on the trigger 15; one end of a connecting rod III 30 is hinged in a round hole at the other end of the rocker arm 28, the other end of the connecting rod III 30 is hinged at one end, away from the gear shaft 26, of another 1 rocker 22 different from the route I, and a pawl pressure spring 27 is arranged at the hinged position between the connecting rod III 30 and the rocker 22 so as to ensure that the pawl 21 is always jointed with the ratchet wheel 20. The hole of the limiting cover 31 of the self-locking device is evenly provided with 6 axial grooves, one end of the limiting cover 31 is provided with a round hole with the diameter smaller than the inner diameter of the cylinder, 2 sections of helicoids with the same rotating direction are arranged between every two adjacent axial grooves at the other end, and the excircle of the end is provided with a connecting flange. The buttons comprise a liquid suction button 35 and an injection button 36, wherein the 2 buttons are in a disc shape, and the diameter of each disc is smaller than the diameter of an inner hole of the limiting cover 31 and larger than the diameter of an inner hole of one end, which is not provided with the connecting flange, of the limiting cover 31; the center of the disk of the 2 kinds of buttons extends out of a boss 1 to one end, the diameter of the boss is smaller than the diameter of an inner hole at one end of the limiting cover 31, which is not provided with a connecting flange, a blind hole is arranged at the center of the other end far away from the boss, and the axis of the blind hole and the axis of the boss are coaxial with the axis of the disk; the end face of one end far away from the boss uniformly extends outwards along the axial direction by 12 triangular teeth; the disc excircle of button is along radially evenly outwards stretching out 6 cylindrical boss, and cylindrical boss diameter is less than the groove width of spacing lid 31 hole, and each cylindrical boss axis all is located the same generating line of the disc outer cylindrical surface of button with the prong of the triangle-shaped tooth that corresponds. The centers of two ends of the sliding block 32 respectively extend outwards to form 1 section of cylindrical section with equal diameter and different length, the outer diameter of the disc shape is equal to that of the button, and the outer diameter of the cylindrical section extending out of the two ends is smaller than the inner diameter of a blind hole arranged at one end of the button far away from the boss; the disc-shaped end surface of the slide block 32, which extends out of one end of the longer cylindrical section, uniformly extends out of 12 triangular teeth along the axial direction; the disc-shaped excircle of the sliding block 32 uniformly extends out of 6 cylindrical bosses along the radial direction, and the axes of the cylindrical bosses and the corresponding tooth tips of the triangular teeth are staggered by 1-3 degrees in the circumferential direction of the sliding block 32. The limiting rod 33 is in a 3-step cylindrical shape, the outer diameter of the large end of the limiting rod is equal to the outer diameter of the disc of the sliding block 32, and the outer diameter of the small end of the limiting rod is smaller than the diameter of a through hole formed between the inner end face of the boss 9 of the gun shell I1 and the bottom of the blind hole; the small end of the limiting rod 33 extends out of 1 section of conical section, the center of the end face of the big end is provided with a blind hole, and the inner diameter of the blind hole is larger than the outer diameter of the cylindrical section extending out of the two ends of the sliding block 32. The spring II 34 is a spiral cylindrical compression spring, 2 springs II 34 are respectively arranged in blind holes at the positions, corresponding to the bosses 9 on the inner surface, of the gun shell I1 or the gun shell II 2, the gun shell I1 or the gun shell II 2 is arranged on the outer surface, and the small ends of 2 limiting rods 33 respectively penetrate through the 2 springs II 34, then respectively penetrate through holes between the inner end surface of the boss 9 on the inner surface and the bottom of the blind hole, and then are inserted into a gun body; the 1 liquid suction button 35 and the 1 injection button 36 are respectively arranged in the 2 limit covers 31, the cylindrical bosses extending out of the disc-shaped outer circles of the buttons are respectively and correspondingly positioned in the axial grooves of the inner holes of the limit covers 31, and the bosses extending out of the disc centers of the buttons face the end far away from the limit covers 31 and provided with the connecting flange; 2 sliders 32 are respectively installed in the 2 limiting covers 31, triangular teeth of the sliders 32 face the buttons, and cylindrical bosses extending out of the outer circles of the sliders 32 are respectively and correspondingly located in axial grooves of inner holes of the limiting covers 31. The 1-piece limiting cover 31 provided with the liquid suction button 35 and the sliding block 32 is arranged on the outer surface of the gun shell I1 through an end face compression spring II 34 at the side of the large end of the limiting rod 33 facing the small end, the boss part of the limiting cover 31 faces outwards, and the boss extending out of the center of the disc of the liquid suction button 35 penetrates through a round hole arranged at the end part of the limiting cover 31 and having the diameter smaller than the inner diameter of the cylinder and then extends out; the 1-piece limiting cover 31 provided with the injection button 36 and the sliding block 32 is arranged on the outer surface of the gun shell II 2 after compressing the spring II 34 through the end surface of the big end of the limiting rod 33 facing to the small end, the boss part of the limiting cover 31 faces outwards, and the boss extending out of the center of the disk of the injection button 36 penetrates through the circular hole arranged at the end part of the limiting cover 31 and having the diameter smaller than the inner diameter of the cylinder and then extends out. One end of a non-return claw 37 of the non-return device is in an olecranon shape, the back of the olecranon is provided with a lug III 42, the lug III 42 is provided with a round hole, one end of the 2 non-return claws 37 far away from the olecranon is respectively hinged on a pin shaft III 11 extending inwards on the inner surfaces of a gun shell I1 and a gun shell II 2, and when the olecranon of the non-return claws 37 faces towards a ratchet wheel 20, the extending directions of the olecranon of pawls 21, which are respectively jointed with the same ratchet wheel 20, of the 2 non-return claws 37 are opposite relative to the extending direction of the; and the hinged parts between the inner surfaces of the gun shell I1 and the gun shell II 2 and the check claws 37 are respectively provided with a check pressure spring 38. Round holes are formed in the middle and two ends of the unlocking arm 39, the axes of the 3 round holes are located in the same plane, 1 lug IV 43 extends from the middle round hole and 1 round hole at the end of the unlocking arm 39 to two sides along the axis direction of the round holes respectively, round holes are formed in the end parts of the lugs IV 43, and one end, provided with the lug IV 43, of the unlocking arm 39 extends out of 1 section of long arm along the length direction of the unlocking arm 39; the unlocking arm 39 is sleeved in the middle of the unlocking shaft 40 through a middle circular hole, and two ends of the unlocking shaft 40 are supported on 2 mutually parallel lugs I12 on the inner surface of the gun shell II 2; after the gun shell I1 is buckled with the gun shell II 2, the long arm of the unlocking arm 39 extending outwards penetrates through the long groove arranged on the gun handle part of the gun shell I1 and then extends outwards. One end of each 2-piece spring III 44 is hung in a round hole at the end part of a lug IV 43 extending from the unlocking arm 39 to two sides, and the other end of each 2-piece spring III is hung in a round hole of a reinforcing rib at the outer side of each 2-piece lug I12 parallel to each other on the inner surface of the gun shell II 2; one end of each 2 pull rods 41 is hinged in circular holes at two ends of the unlocking arm 39, the other end of each pull rod is hung with 1 spring IV 45, and the other end of each 2 spring IV 45 is hung in a circular hole of a lug III 42 hinged on the back of the 2 non-return claws 37 on the pin shafts III 11 on the inner surfaces of the gun shell I1 and the gun shell II 2. Clamping device's holding frame 46 bottom plate is the flat plate shape of rectangle, the straight arm end that the bottom plate middle part outwards stretched out along the bottom plate normal direction is equipped with U-shaped card 48, the straight arm of holding frame 46 is close to bottom plate department and respectively stretches out 1 section supporting arm to both sides, and the supporting arm end all is equipped with spacing stick 49, 2 spacing stick 49's length direction perpendicular to U-shaped card 48's U-shaped plane, and 2 spacing stick 49 the place plane is parallel with the rectangular plane of bottom plate, the bottom surface that U-shaped card 48 was kept away from to the bottom plate of holding frame 46 is equipped with lug V50, and be equipped with the round hole on lug V50. The straight arm part of the clamping frame 46 is arranged between U-shaped gaps at the joint surface of the gun shell I1 and the gun shell II 2, the bottom plate of the clamping frame 46 is positioned in the gun body, 2 limiting rods 49 of the clamping frame 46 are positioned outside the gun body and are respectively tangent to the upper planes of the gun barrel parts of the gun shell I1 and the gun shell II 2, and the U-shaped plane of the U-shaped clamp 48 is vertical to the length direction of the gun barrel; one end of the spring V47 is hung in a round hole on a lug V50 of the holding frame 46, and the other end is hung in a round hole on a lug II 13 on the inner surface of the gun shell II 2.

Claims (1)

1. A ratchet boosting gun with a check device comprises a gun body, a transmission system, a self-locking device, the check device and a clamping device, wherein the whole gun body is divided into a middle gun body, a front gun barrel, a tail part far away from the rear upper part of the gun barrel and a gun handle positioned below the gun body, and the gun body comprises a gun shell I (1) and a gun shell II (2) which are bilaterally symmetrical, a supporting plate and a sleeve; a bearing plate I (3) is arranged in an inner cavity of a joint part of the gun barrel and the gun body, a round hole is formed in the bearing plate I (3), a bearing plate II (4) is arranged in an inner cavity of a joint part of the tail part and the gun body, holes in the bearing plate II (4) are on the basis that the diameter of each hole is equal to that of the round hole in the bearing plate I (3) and the axes are coaxial, 2 bus lines on the normal direction of a joint surface of the gun shell I (1) and the gun shell II (2) respectively protrude a part towards the center direction of the hole, and edge lines of the protruding parts on the two sides are parallel to the joint surface of the gun shell I (1); a sleeve I (5) is arranged between the bearing plate I (3) and the foremost end of the inner cavity of the gun barrel, a sleeve II (6) is arranged between the bearing plate II (4) and the rearmost end of the inner cavity of the tail part, the axes of the sleeve I (5) and the sleeve II (6) are coaxial with the axis of a round hole in the bearing plate I (3), round holes are formed in the outermost ends of the tail parts of the gun shell I (1) and the gun shell II (2), the center of each round hole is located on the axis of the sleeve II (6), and the diameter of each round hole is equal to the inner diameter of the sleeve II (; the inner surfaces of the gun body parts of the gun shell I (1) and the gun shell II (2) respectively extend 1 pin shaft I (7) inwards, and the axes of the 2 pin shafts I (7) are coaxial; an arc groove which is smaller than a semicircle is arranged in the middle of the upper portion of the gun body, the length of the arc groove is smaller than the total length from the front end of the gun barrel to the tail portion of the gun shell, the axis of the arc groove is parallel to the common axis of the sleeve I (5) and the sleeve II (6), U-shaped clamps (8) are arranged at two ends of the arc groove, and U-shaped openings of the 2 clamps (8) face upwards; the inner surface of one side, close to the tail, of the gun body of the gun shell I (1) extends inwards for 1 boss (9) which is cylindrical, the inner surface of the middle part of the gun body of the gun shell II (2) also extends inwards for 1 boss (9), blind holes coaxial with the axis of the boss (9) are formed in the gun shell I (1) and the outer surfaces, corresponding to the bosses (9) on the inner surfaces, of the gun shell II (2), and through holes are formed between the boss (9) and the bottoms of the blind holes; the inner surface of the upper part of the gun body of the gun shell II (2), which is close to the tail part, extends inwards to form 1 pin shaft II (10); the method is characterized in that: the joint of the gun body and the gun handle of the gun shell I (1) of the gun body is close to the inner surface of one side of the gun barrel, and 1 pin shaft III (11) extends inwards, and the gun handle part of the gun shell I (1) is provided with a long groove; the inner surface of the joint of the gun body and the gun handle of the gun shell II (2) far away from the gun barrel also extends inwards for 1 pin shaft III (11), the inner surface of the gun handle part of the gun shell II (2) extends inwards for 2 mutually parallel lugs I (12), 1 round hole with the axis vertical to the plane of the lug I (12) is respectively arranged on the 2 lugs I (12), the axes of the 2 round holes are coaxial, reinforcing ribs are arranged on the outer sides of the 2 lugs I (12), and the reinforcing ribs are all provided with round holes; u-shaped notches are arranged above barrel parts of the gun shell I (1) and the gun shell II (2) and at the joint surface of the gun shell I (1) and the gun shell II (2), lugs II (13) are arranged on the inner surface, close to the barrel, of an arc groove arranged above a gun body of the gun shell II (2), and round holes are formed in the lugs II (13); the transmission system is divided into 2 transmission routes, namely a route I and a route II, wherein the route I comprises an auxiliary push rod (14), a trigger (15), a trigger shaft (16), a transmission pin (17), a spring I (18), a gear (19), a ratchet wheel (20), a pawl (21), a rocker (22) and a connecting rod I (23), a part of a bus at two sides of the cylindrical auxiliary push rod (14) is cut along the length direction of the auxiliary push rod (14), 2 formed planes are parallel to each other, the 2 planes are parallel to the axis of the auxiliary push rod (14), and the cross section shapes of the two sides of the auxiliary push rod (14) after being cut are the same as the shapes of holes in the support plate II (4); one of the arc surfaces between the 2 parallel planes of the push-aid rod (14) is processed into a rack shape; the push-aid rod (14) is inserted into the sleeve II (6) from the tail part of the gun body, the part of the gun handle of the gun body is in a tooth shape, sequentially penetrates through the bearing plate II (4) and the bearing plate I (3) and then is inserted into the sleeve I (5), and 2 planes on two sides of the push-aid rod (14) are respectively attached to edge lines of protruding parts on two sides of a hole in the bearing plate II (4); the other end of the push-aid rod (14) far away from the sleeve I (5) is provided with a U-shaped transmission plate (24), and the U-shaped opening of the transmission plate (24) faces upwards; the trigger (15) is rhombic, two side faces of the extended water caltrop with longer length, which are vertical to the plane direction of the rhombus, are respectively concave arc-shaped and convex arc-shaped, a round hole with an axis vertical to the plane of the rhombus is arranged in the middle of the trigger (15), round holes are also arranged at the water caltrop extending out of the opposite angle of the longer water caltrop, and the axes of 2 round holes are parallel; the middle part of the trigger (15) is close to one end of the longer water chestnut, one side of the convex cambered surface close to the longer water chestnut extends 1 pin shaft IV (25) to two sides along the direction vertical to the diamond plane, 2 pin shafts IV (25) are coaxial, and the axis of the pin shaft IV (25) is parallel to the axis of the round hole in the middle part of the trigger (15); the trigger (15) is arranged in the middle of a trigger shaft (16) through a round hole in the middle, a transmission pin (17) is arranged in another round hole of the trigger (15), two ends of the trigger shaft (16) are respectively supported at the gun body parts, close to the gun barrel, of the gun shell I (1) and the gun shell II (2), and when one end, extending out of the longer water caltrop, of the trigger (15) faces towards the gun handle, the concave cambered surface, extending out of the longer water caltrop, of the trigger (15) faces towards one side of the gun barrel; the spring I (18) is a torsion spring and is provided with 1 piece of spring which is symmetrical in a left-handed and right-handed manner, spring wires at two ends of 2 pieces of spring I (18) respectively extend out of 1 section of straight line section along the radial direction of the spring I (18), the tail ends of the straight line sections are provided with winding lugs, the winding lugs at one end of each 1 piece of spring I (18) which is symmetrical in the left-handed and right-handed manners are respectively sleeved and hung on a pin shaft I (7) arranged on the inner surfaces of the gun shell I (1) and the gun shell II (2), and the winding lugs at the other end are respectively sleeved and hung on pin shafts IV (25) arranged on two side surfaces; the gear (19) is in a fan shape, the modulus of the gear is equal to that of a rack machined on the boosting rod (14), the gear (19) is installed in the middle of a gear shaft (26), 1 ratchet wheel (20) is installed on each of two sides of the gear (19) on the gear shaft (26), and the tooth form directions of the outer edges of the 2 ratchet wheels (20) are opposite; round holes with parallel axes are formed in the middle and two ends of the rocker (22), one end of the pawl (21) is in an olecranon shape, the other end of the pawl extends out of the 1-section arc-shaped rod, the concave surface of the arc-shaped rod faces the extending direction of the olecranon, and the pawl (21) is hinged in the round hole in the middle of the rocker (22); 2 rocker levers (22) hinged with pawls (21) are sleeved outside 2 ratchet wheels (20) on a gear shaft (26) through round holes at one ends of the rocker levers (22), the pawls (21) on the rocker levers (22) face one side of the ratchet wheels (20), the extending ends of two ends of the gear shaft (26) penetrating through the rocker levers (22) are respectively supported in the middle parts of a gun shell I (1) and a gun shell II (2) of a gun body, and a gear (19) and a boosting rod (14) are meshed with the tooth form of the part between a support plate I (3) and a support plate II (4); one end of a connecting rod I (23) is hinged to one end, far away from the gear shaft (26), of the rocker (22), a pawl pressure spring (27) is installed at the hinged position between the connecting rod I (23) and the rocker (22), and the other end of the connecting rod I (23) is sleeved at one end, installed on the trigger (15), of a transmission pin (17); the route II of the transmission system comprises an auxiliary push rod (14), a trigger (15), a trigger shaft (16), a transmission pin (17), a spring I (18), a gear (19), a ratchet wheel (20), a pawl (21), a rocker (22), a rocker (28) and a connecting rod, round holes with parallel axes are formed in the two ends and the middle of the rocker (28), and the rocker (28) is sleeved on a pin shaft II (10) extending out of the inner surface of the gun shell II (2) through the round hole in the middle; one end of a connecting rod II (29) is hinged in a round hole at one end of the rocker arm (28), and the other end of the connecting rod II is sleeved on the other end, different from the route I, of a transmission pin (17) arranged on the trigger (15); one end of a connecting rod III (30) is hinged in a round hole at the other end of the rocker arm (28), the other end of the connecting rod III (30) is hinged at one end, which is far away from the gear shaft (26), of another 1 rocker (22) different from the route I, and a pawl pressure spring (27) is arranged at the hinged position between the connecting rod III (30) and the rocker (22); the self-locking device comprises a limiting cover (31), a button, a sliding block (32), a limiting rod (33) and a spring II (34), wherein a plurality of axial grooves are uniformly formed in an inner hole of the cylindrical limiting cover (31), a round hole with the diameter smaller than the inner diameter of the cylinder is formed in one end of the limiting cover (31), 2 sections of spiral surfaces with the same rotation direction are arranged between every two adjacent axial grooves in the other end of the limiting cover (31), and a connecting flange is arranged on the outer circle of the end of the limiting cover; the buttons comprise a liquid suction button (35) and an injection button (36) which have the same structural shape and size and different colors, the 2 buttons are all in a disc shape, and the diameter of each disc is smaller than the diameter of an inner hole of the limiting cover (31) and larger than the diameter of the inner hole of one end, not provided with the connecting flange, of the limiting cover (31); the center of the disk of the 2 kinds of buttons extends out of a boss 1 to one end, the diameter of the boss is smaller than the diameter of an inner hole at one end of the limiting cover (31) which is not provided with a connecting flange, a blind hole is arranged at the center of the other end far away from the boss, and the axis of the blind hole and the axis of the boss are coaxial with the axis of the disk; the end face of one end far away from the boss uniformly extends outwards along the axial direction to form a plurality of triangular teeth, and the number of the triangular teeth is 2 times of the number of the inner hole grooves of the limiting cover (31); a plurality of cylindrical bosses uniformly extend outwards along the radial direction from the disc-shaped excircle of the button, the number of the cylindrical bosses is equal to the number of grooves of the inner hole of the limiting cover (31), the diameter of each cylindrical boss is smaller than the groove width of the inner hole of the limiting cover (31), and the axis of each cylindrical boss and the corresponding tooth tip of the triangular tooth are all positioned on the same generatrix of the disc-shaped outer cylindrical surface of the button; the centers of two ends of a disk-shaped sliding block (32) respectively extend outwards to form 1 section of cylindrical section with equal diameter and different length, the outer diameter of the disk is equal to that of the disk of the button, and the outer diameter of the cylindrical section extending out of the two ends is smaller than the inner diameter of a blind hole arranged at one end of the button far away from the boss; a plurality of triangular teeth uniformly extend outwards from the disc-shaped end surface of one end of the sliding block (32) extending out of the longer cylindrical section along the axial direction, and the number of the triangular teeth is equal to that of the triangular teeth extending out from the end surface of the button far away from the boss; a plurality of cylindrical bosses uniformly extend outwards from the disc-shaped excircle of the sliding block (32) along the radial direction, the number and the diameter of the cylindrical bosses are equal to those of the cylindrical bosses extending from the disc-shaped excircle of the button, and the axes of the cylindrical bosses and the corresponding tooth tips of the triangular teeth are staggered by 1-3 degrees in the circumferential direction of the sliding block (32); the limiting rod (33) is in a 3-step cylindrical shape, the outer diameter of the large end of the limiting rod is equal to the outer diameter of the disc of the sliding block (32), and the outer diameter of the small end of the limiting rod is smaller than the diameter of a through hole formed between the inner end face of the boss (9) of the gun shell I (1) and the bottom of the blind hole; the small end of the limiting rod (33) extends out of 1 section of conical section, the center of the end face of the large end is provided with a blind hole, and the inner diameter of the blind hole is larger than the outer diameter of the cylindrical section extending out of the two ends of the sliding block (32); the spring II (34) is a spiral cylindrical compression spring, 2 springs II (34) are respectively arranged in blind holes at the positions, corresponding to the lug bosses (9) on the inner surface, of the gun shell I (1) or the gun shell II (2) on the outer surface, and the small ends of 2 limiting rods (33) respectively penetrate through the 2 springs II (34), then respectively penetrate through holes between the inner end surface of the lug bosses (9) on the inner surface and the bottoms of the blind holes of the gun shell I (1) or the gun shell II (2) and then are inserted into a gun body; 1 liquid suction button (35) and 1 injection button (36) are respectively arranged in 2 limit covers (31), cylindrical bosses extending out of the disc-shaped excircle of the button are respectively and correspondingly positioned in axial grooves of inner holes of the limit covers (31), and the bosses extending out of the disc center of the button are towards one end away from the limit covers (31) and provided with a connecting flange; 2 sliding blocks (32) are respectively arranged in 2 limiting covers (31), triangular teeth of the sliding blocks (32) face to the buttons, and cylindrical bosses extending out of the outer circles of the sliding blocks (32) are respectively and correspondingly positioned in axial grooves of inner holes of the limiting covers (31); 1 limiting cover (31) provided with a liquid suction button (35) and a sliding block (32) is arranged on the outer surface of the gun shell I (1) after an end surface compression spring II (34) at the side of the large end of a limiting rod (33) towards the small end, the boss part of the limiting cover (31) faces outwards, and a boss extending out of the center of a disc of the liquid suction button (35) penetrates through a circular hole formed in the end part of the limiting cover (31) and having a diameter smaller than the inner diameter of the cylinder and then extends out; the 1-piece limiting cover (31) provided with the injection button (36) and the sliding block (32) is arranged on the outer surface of the gun shell II (2) after compressing a spring II (34) through the end surface of the large end of a limiting rod (33) towards the small end, the boss part of the limiting cover (31) faces outwards, and the boss extending out of the center of the disk of the injection button (36) penetrates through a circular hole formed in the end part of the limiting cover (31) and having a diameter smaller than the inner diameter of the cylinder and then extends out; the non-return device comprises non-return claws (37), non-return pressure springs (38), unlocking arms (39), an unlocking shaft (40), a pull rod (41) and a spring, one end of each non-return claw (37) is in an olecranon shape, the back of the olecranon is provided with a lug III (42), round holes are formed in the lug III (42), one ends, far away from the olecranon, of the 2 non-return claws (37) are respectively hinged to a pin shaft III (11) extending inwards on the inner surfaces of the gun shell I (1) and the gun shell II (2), and when the olecranon of the non-return claws (37) face the ratchet wheel (20), the extending directions of the olecranons of pawls (21) which are respectively jointed with the same ratchet wheel (20) of the 2 non-return claws (37) are opposite relative to the extending direction; the hinged parts between the inner surfaces of the gun shell I (1) and the gun shell II (2) and the check claws (37) are respectively provided with a check pressure spring (38); the middle part and two ends of the unlocking arm (39) are provided with 3 round holes with parallel axes, the axes of the 3 round holes are positioned in the same plane, 1 lug IV (43) respectively extends out of two sides of the round hole along the axis direction of the round hole between the round hole in the middle part and the round hole in the end part of the unlocking arm (39), the end part of the lug IV (43) is provided with a round hole, and one end of the unlocking arm (39) provided with the lug IV (43) extends out of 1 section of long arm along the length direction of the unlocking arm (39); the unlocking arm (39) is sleeved in the middle of the unlocking shaft (40) through a middle round hole, and two ends of the unlocking shaft (40) are supported on 2 mutually parallel lugs I (12) on the inner surface of the gun shell II (2); the spring III (44) and the spring IV (45) are tension springs, one end of each of the 2 springs III (44) is hung in a circular hole at the end part of a lug IV (43) extending towards two sides of the unlocking arm (39), and the other end of each of the 2 springs III (44) is hung in a reinforcing rib circular hole at the outer side of the 2 mutually parallel lugs I (12) on the inner surface of the gun shell II (2); one end of each of 2 pull rods (41) is hinged in circular holes at two ends of the unlocking arm (39), the other end of each pull rod is hung with 1 spring IV (45), and the other end of each spring IV (45) is hung in a circular hole of a lug III (42) at the back of each non-return claw (37) which is hinged on a pin shaft III (11) on the inner surfaces of the gun shell I (1) and the gun shell II (2); the clamping device comprises a clamping frame (46) and a spring V (47), a bottom plate of the clamping frame (46) is in a rectangular flat plate shape, a U-shaped clamp (48) is arranged at the tail end of a straight arm which extends outwards along the normal direction of the bottom plate in the middle of the bottom plate, 1 section of supporting arm respectively extends out of the position, close to the bottom plate, of the straight arm of the clamping frame (46) to two sides, the tail ends of the supporting arms are respectively provided with a limiting rod (49), the length direction of 2 limiting rods (49) is perpendicular to the U-shaped plane of the U-shaped clamp (48), the plane of the 2 limiting rods (49) is parallel to the rectangular plane of the bottom plate, a lug V (50) is arranged on the bottom surface, far away from the U-shaped clamp (48), of the bottom plate of; the straight arm part of the clamping frame (46) is arranged between U-shaped gaps at the joint surface of the gun shell I (1) and the gun shell II (2), the bottom plate of the clamping frame (46) is positioned in the gun body, 2 limiting rods (49) of the clamping frame (46) are positioned outside the gun body and are respectively tangent to the upper planes of the gun barrel parts of the gun shell I (1) and the gun shell II (2), and the U-shaped plane of the U-shaped clamp (48) is vertical to the length direction of the gun barrel; the spring V (47) is an extension spring, one end of the spring V (47) is hung in a circular hole on a lug V (50) of the clamping frame (46), and the other end of the spring V (47) is hung in a circular hole on an inner surface lug II (13) of the gun shell II (2).
CN202020787869.6U 2020-05-13 2020-05-13 Ratchet boosting gun with non-return device Active CN213031629U (en)

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Application Number Priority Date Filing Date Title
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CN213031629U true CN213031629U (en) 2021-04-23

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113279560A (en) * 2021-05-31 2021-08-20 青海送变电工程有限公司 Scaffold board fixing clamp
CN113440417A (en) * 2021-07-09 2021-09-28 深圳市人民医院 Liquid food feeding device for diagnosis and treatment nursing of critically ill neonate
CN115255861A (en) * 2022-08-09 2022-11-01 山西平阳重工机械有限责任公司 Reverse self-locking mechanical claw
CN115317057A (en) * 2022-08-25 2022-11-11 上海玄宇医疗器械有限公司 Blood vessel closure glue conveying device
WO2023218349A1 (en) * 2022-05-11 2023-11-16 Verb Surgical Inc. Actuation combiner mechanism for a surgical tool

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113279560A (en) * 2021-05-31 2021-08-20 青海送变电工程有限公司 Scaffold board fixing clamp
CN113279560B (en) * 2021-05-31 2022-09-02 青海送变电工程有限公司 Scaffold board fixing clamp
CN113440417A (en) * 2021-07-09 2021-09-28 深圳市人民医院 Liquid food feeding device for diagnosis and treatment nursing of critically ill neonate
CN113440417B (en) * 2021-07-09 2022-06-24 深圳市人民医院 Liquid food feeding device for diagnosis and treatment nursing of critically ill neonate
WO2023218349A1 (en) * 2022-05-11 2023-11-16 Verb Surgical Inc. Actuation combiner mechanism for a surgical tool
CN115255861A (en) * 2022-08-09 2022-11-01 山西平阳重工机械有限责任公司 Reverse self-locking mechanical claw
CN115255861B (en) * 2022-08-09 2024-04-12 山西平阳重工机械有限责任公司 Reverse self-locking mechanical claw
CN115317057A (en) * 2022-08-25 2022-11-11 上海玄宇医疗器械有限公司 Blood vessel closure glue conveying device

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