CN106581799B

CN106581799B - Mechanism for mechanically pushing and injecting ultrasonic contrast agent

Info

Publication number: CN106581799B
Application number: CN201611123557.XA
Authority: CN
Inventors: 邹春鹏; 郑超; 梁广; 焦岩; 魏凯能; 郑金珏
Original assignee: Second Hospital Affiliated to Wenzhou Medical College
Current assignee: Second Hospital Affiliated to Wenzhou Medical College
Priority date: 2016-12-08
Filing date: 2016-12-08
Publication date: 2023-02-24
Anticipated expiration: 2036-12-08
Also published as: CN106581799A

Abstract

A mechanism for pushing ultrasonic contrast agent mechanically comprises a rectangular main shell, a main mounting vertical plate, a main lower positioning cylinder, a main upper positioning cylinder, a main lower sliding sleeve, a main upper sliding sleeve, a main lower supporting spring, a main upper supporting spring, a main pull rod, a main upper pushing column, a main upper piston pushing disc, a main left clamping disc, a main right clamping disc, a main needle cylinder and a main lock.

Description

Mechanism for mechanically pushing and injecting ultrasonic contrast agent

Technical Field

The invention relates to a mechanism for mechanically injecting an ultrasonic contrast agent.

Background

The ultrasonic contrast examination is a special examination method with a wide popularization range and has important clinical application value. In the ultrasonic contrast examination, besides the necessary ultrasonic instrument with the ultrasonic contrast function and the ultrasonic contrast agent, a very important link is also provided, namely the contrast agent and the physiological saline are required to be quickly injected into the peripheral veins of the examined person, and the contrast agent reaches the heart as quickly as possible, so that the accuracy and the repeatability of related ultrasonic contrast parameters are ensured, and the diagnosis accuracy is improved.

The operation method in this link at present is to inject the ultrasonic contrast medium and the physiological saline manually, which cannot inject the ultrasonic contrast medium and the physiological saline into the peripheral veins of the examined person quickly, the ultrasonic contrast medium cannot reach the heart quickly, after the injection of the ultrasonic contrast medium is finished, the three-way switch cannot automatically close the injection channel of the ultrasonic contrast medium, the reverse flow is generated when the physiological saline is injected, the physiological saline enters the syringe for injecting the ultrasonic contrast medium, and the diagnosis accuracy is low.

Disclosure of Invention

In view of the above technical problems, the present invention provides: the mechanism has simple structure, can quickly inject the ultrasonic contrast agent and the physiological saline into the peripheral veins of the examined person, can not generate reverse flow when injecting the physiological saline, and has high diagnosis accuracy.

In order to solve the technical problems, the invention adopts the following technical scheme: a mechanism for mechanically injecting an ultrasonic contrast agent comprises a rectangular main shell, a main mounting vertical plate, a main lower positioning cylinder, a main upper positioning cylinder, a main lower sliding sleeve, a main upper sliding sleeve, a main lower supporting spring, a main upper supporting spring, a main pull rod, a main upper push column, a main upper piston push disc, a main left clamping piece, a main right clamping piece, a main needle cylinder and a main lock, wherein the main mounting vertical plate is fixedly mounted in the rectangular main shell, the front end of the main lower positioning cylinder is fixedly mounted on the main mounting vertical plate, the front end of the main upper positioning cylinder is fixedly mounted on the main mounting vertical plate, a main crack is arranged between the main lower positioning cylinder and the main upper positioning cylinder, the main lower sliding sleeve is sleeved on the main lower positioning cylinder, the main upper sliding sleeve is sleeved on the main upper positioning cylinder, the top of the main lower sliding sleeve is connected with the bottom of the main upper sliding sleeve, the front end of the main pull rod is connected with the tail of the main upper sliding sleeve, the rear end of the main pull rod is positioned outside the rectangular main shell, the main pull rod is positioned in a main crack, the front end of a main lower supporting spring is fixed on the tail part of a main lower sliding sleeve, the rear end of the main lower supporting spring is fixed on the tail part of a main lower positioning cylinder, the front end of a main upper supporting spring is fixed on the tail part of a main upper sliding sleeve, the rear end of the main upper supporting spring is fixed on the tail part of a main upper positioning cylinder, a main upper push column is fixedly arranged on the main upper sliding sleeve, a main upper piston push disc is fixedly arranged on the main upper push column, a main upper push column front and rear displacement hole is arranged on the rectangular main shell, the main upper push column extends out of the main upper push column front and rear displacement hole, the main upper piston push disc is positioned above the main upper push column front and rear displacement hole, and a main left clamping sheet and a main right clamping sheet are both fixedly arranged on the top of the rectangular main shell, the main needle cylinder is arranged between the main left clamping piece and the main right clamping piece, the main upper piston push disc is in butt fit with the piston of the main needle cylinder and comprises a rectangular auxiliary shell, an auxiliary mounting vertical plate, an auxiliary lower positioning cylinder, an auxiliary upper positioning cylinder, an auxiliary lower sliding sleeve, an auxiliary upper sliding sleeve, an auxiliary lower supporting spring, an auxiliary upper supporting spring, an auxiliary pull rod, an auxiliary upper push column, an auxiliary upper piston push disc, an auxiliary left clamping piece, an auxiliary right clamping piece, an auxiliary needle cylinder and an auxiliary lock, the auxiliary mounting vertical plate is fixedly arranged in the rectangular auxiliary shell, the front end of the auxiliary lower positioning cylinder is fixedly arranged on the auxiliary mounting vertical plate, the front end of the auxiliary upper positioning cylinder is fixedly arranged on the auxiliary mounting vertical plate, an auxiliary crack is arranged between the auxiliary lower positioning cylinder and the auxiliary upper positioning cylinder, the auxiliary lower sliding sleeve is arranged on the auxiliary lower positioning cylinder, the auxiliary upper sliding sleeve is arranged on the auxiliary upper positioning cylinder, the top of the auxiliary lower sliding sleeve is connected with the bottom of the auxiliary upper sliding sleeve, the front end of the auxiliary pull rod is connected with the tail of the auxiliary upper sliding sleeve, the rear end of the auxiliary pull rod is positioned outside the rectangular auxiliary shell, the auxiliary pull rod is positioned in an auxiliary crack, the front end of the auxiliary lower supporting spring is fixed on the tail of the auxiliary lower sliding sleeve, the rear end of the auxiliary lower supporting spring is fixed on the tail of the auxiliary lower positioning cylinder, the front end of the auxiliary upper supporting spring is fixed on the tail of the auxiliary upper sliding sleeve, the rear end of the auxiliary upper supporting spring is fixed on the tail of the auxiliary upper positioning cylinder, the auxiliary upper push column is fixedly arranged on the auxiliary upper sliding sleeve, the auxiliary upper piston push disc is fixedly arranged on the auxiliary upper push column, the rectangular auxiliary shell is provided with the front and rear displacement holes of the auxiliary upper push column, the auxiliary upper push column stretches out from the front and rear displacement holes of the auxiliary upper push column, the auxiliary upper piston push disc is positioned above the front and rear displacement holes of the auxiliary upper push column, the auxiliary left clamping piece and the auxiliary right clamping piece are both fixedly installed on the top of the rectangular auxiliary shell, the auxiliary needle cylinder is installed between the auxiliary left clamping piece and the auxiliary right clamping piece, the auxiliary upper piston push disc is matched with the piston of the auxiliary needle cylinder in an abutting mode, the front end of the rectangular auxiliary shell is fixedly connected with the right side portion of the rectangular main shell and comprises a connecting tee joint, a tee joint connecting column, an L-shaped tee joint supporting block, an L-shaped tee joint installing groove rotating torsion spring and an L-shaped tee joint installing groove supporting column, the L-shaped tee joint installing groove supporting column is fixedly installed on the bottom plate of the rectangular main shell, the L-shaped tee joint installing groove is rotatably installed on the L-shaped tee joint installing groove supporting column, the L-shaped tee joint installing groove rotating torsion spring is sleeved on the L-shaped tee joint installing groove supporting column, and the upper end of the L-shaped tee joint installing groove rotating torsion spring is fixedly installed at the bottom of the L-shaped tee joint installing groove, the lower end of the L-shaped tee joint mounting groove rotating torsion spring is fixedly mounted on an L-shaped tee joint mounting groove support column, the L-shaped tee joint support block is mounted in the L-shaped tee joint mounting groove, the lower end of the tee joint connection column is fixedly connected with the L-shaped tee joint support block, the upper end of the tee joint connection column is fixedly connected with a connection tee joint, an L-shaped opening is formed in a top plate of the rectangular main shell, the height of the connection tee joint is higher than that of the L-shaped tee joint mounting groove, the L-shaped tee joint support block, the L-shaped tee joint mounting groove and the L-shaped tee joint mounting groove support column are all located inside the rectangular main shell, the connection tee joint is located above the rectangular main shell and comprises a tee joint first interface, a tee joint second interface and a tee joint third interface, the tee joint first interface is connected with the main needle cylinder, and the tee joint second interface is connected with the auxiliary needle cylinder, the three-way third interface is connected with a needle head and comprises a trigger pushing sleeve, a trigger transverse positioning column, a trigger spring, a trigger sleeve ring, a trigger block and a trigger block bracket, the front end of the trigger transverse positioning column is fixedly arranged on a front vertical plate of the rectangular main shell, the trigger pushing sleeve ring is sleeved on the trigger transverse positioning column, the outer side of the trigger pushing sleeve is fixedly connected with the outer side of the main upper sliding sleeve, the trigger sleeve ring and the trigger spring are sleeved on the trigger transverse positioning column, the trigger sleeve ring is positioned between the trigger spring and the trigger pushing sleeve, the front end of the trigger spring is abutted against the inner wall of the rectangular main shell, the rear end of the trigger spring is abutted against the front end of the trigger pushing sleeve, the top of the trigger block is fixedly connected with the bottom of the trigger sleeve ring, and the trigger block bracket is fixedly arranged on a bottom plate of the rectangular main shell, the trigger block is movably sleeved on the trigger block support, the trigger block is provided with a trigger hook head, the trigger hook head is matched with an L-shaped three-way mounting groove, the main lock comprises a main lock mounting shell, a main lock inserting column and a main lock inserting column supporting spring, the main lock mounting shell is fixedly mounted on the side part of the rectangular main shell, a main lock inserting column jack is arranged on the side part of the rectangular main shell in front of the main lock mounting shell, the main lock inserting column can be inserted into the main lock inserting column jack to be matched with the main lower sliding sleeve, the main lock inserting column and the main lock inserting column supporting spring are both mounted in the main lock mounting shell, the front end of the main lock inserting column supporting spring is in butt fit with the tail end of the main lock inserting column, the tail end of the main lock inserting column supporting spring is in butt fit with the inner wall of the main lock mounting shell, the side part of the main lock mounting shell is provided with a main lock mounting shell slit, the secondary lock mounting structure is characterized in that a primary lock mounting shell slotted notch is formed in the primary lock mounting shell, a primary lock inserting column driving rod is arranged on the side portion of the primary lock inserting column, the primary lock inserting column driving rod extends out of the primary lock mounting shell in a slotted mode, the primary lock inserting column driving rod can be clamped on the primary lock mounting shell slotted notch, the secondary lock comprises a secondary lock mounting shell, a secondary lock inserting column and a secondary lock inserting column supporting spring, the secondary lock mounting shell is fixedly mounted on the side portion of the rectangular secondary shell, a secondary lock inserting column inserting hole is formed in the side portion of the rectangular secondary shell in front of the secondary lock mounting shell, the secondary lock inserting column can be inserted into the secondary lock inserting column inserting hole to be matched with a secondary lower sliding sleeve, the secondary lock inserting column and the secondary lock inserting column supporting spring are mounted in the secondary lock mounting shell, the front end of the secondary lock inserting column supporting spring is in butt fit with the tail end of the secondary lock inserting column, the tail end of the secondary lock inserting column supporting spring is matched with the inner wall of the secondary lock mounting shell, the secondary lock inserting column supporting spring is abutted against the side portion of the secondary lock mounting shell, and the secondary lock inserting column mounting shell extends out of the secondary lock inserting column, and the secondary lock inserting column mounting shell in the slotted lock mounting shell, the slotted lock inserting column, the secondary lock inserting column mounting shell, and the secondary lock inserting column mounting shell is arranged on the secondary lock mounting shell.

The mechanism for mechanically pushing the ultrasonic contrast agent has the beneficial effects that: the main mounting vertical plate is fixedly arranged in the rectangular main shell, the front end of the main lower positioning cylinder is fixedly arranged on the main mounting vertical plate, the front end of the main upper positioning cylinder is fixedly arranged on the main mounting vertical plate, a main crack is arranged between the main lower positioning cylinder and the main upper positioning cylinder, the main lower sliding sleeve is sleeved on the main lower positioning cylinder, the main upper sliding sleeve is sleeved on the main upper positioning cylinder, the top of the main lower sliding sleeve is connected with the bottom of the main upper sliding sleeve, and the front end of the main pull rod is connected with the tail of the main upper sliding sleeve, the rear end of the main pull rod is positioned outside the rectangular main shell, the main pull rod is positioned in a main crack, the front end of a main lower supporting spring is fixed on the tail part of a main lower sliding sleeve, the rear end of the main lower supporting spring is fixed on the tail part of a main lower positioning cylinder, the front end of a main upper supporting spring is fixed on the tail part of a main upper sliding sleeve, the rear end of the main upper supporting spring is fixed on the tail part of a main upper positioning cylinder, a main upper push column is fixedly arranged on the main upper sliding sleeve, a main upper piston push disc is fixedly arranged on the main upper push column, a main upper push column front and rear displacement hole is arranged on the rectangular main shell, the main upper push column extends out of the main upper push column front and rear displacement hole, the main upper piston push disc is positioned above the main upper push column front and rear displacement hole, and a main left clamping sheet and a main right clamping sheet are both fixedly arranged on the top of the rectangular main shell, the main needle cylinder is arranged between the main left clamping piece and the main right clamping piece, the main upper piston push disc is in butt fit with the piston of the main needle cylinder and comprises a rectangular auxiliary shell, an auxiliary mounting vertical plate, an auxiliary lower positioning cylinder, an auxiliary upper positioning cylinder, an auxiliary lower sliding sleeve, an auxiliary upper sliding sleeve, an auxiliary lower supporting spring, an auxiliary upper supporting spring, an auxiliary pull rod, an auxiliary upper push column, an auxiliary upper piston push disc, an auxiliary left clamping piece, an auxiliary right clamping piece, an auxiliary needle cylinder and an auxiliary lock, the auxiliary mounting vertical plate is fixedly arranged in the rectangular auxiliary shell, the front end of the auxiliary lower positioning cylinder is fixedly arranged on the auxiliary mounting vertical plate, the front end of the auxiliary upper positioning cylinder is fixedly arranged on the auxiliary mounting vertical plate, an auxiliary crack is arranged between the auxiliary lower positioning cylinder and the auxiliary upper positioning cylinder, the auxiliary lower sliding sleeve is arranged on the auxiliary lower positioning cylinder, the auxiliary upper sliding sleeve is arranged on the auxiliary upper positioning cylinder, the top of the auxiliary lower sliding sleeve is connected with the bottom of the auxiliary upper sliding sleeve, the front end of the auxiliary pull rod is connected with the tail of the auxiliary upper sliding sleeve, the rear end of the auxiliary pull rod is positioned outside the rectangular auxiliary shell, the auxiliary pull rod is positioned in an auxiliary crack, the front end of the auxiliary lower supporting spring is fixed on the tail of the auxiliary lower sliding sleeve, the rear end of the auxiliary lower supporting spring is fixed on the tail of the auxiliary lower positioning cylinder, the front end of the auxiliary upper supporting spring is fixed on the tail of the auxiliary upper sliding sleeve, the rear end of the auxiliary upper supporting spring is fixed on the tail of the auxiliary upper positioning cylinder, the auxiliary upper push column is fixedly arranged on the auxiliary upper sliding sleeve, the auxiliary upper piston push disc is fixedly arranged on the auxiliary upper push column, the rectangular auxiliary shell is provided with the front and rear displacement holes of the auxiliary upper push column, the auxiliary upper push column stretches out from the front and rear displacement holes of the auxiliary upper push column, the auxiliary upper piston push disc is positioned above the front and rear displacement holes of the auxiliary upper push column, the auxiliary left clamping piece and the auxiliary right clamping piece are both fixedly installed on the top of the rectangular auxiliary shell, the auxiliary needle cylinder is installed between the auxiliary left clamping piece and the auxiliary right clamping piece, the auxiliary upper piston push disc is matched with the piston of the auxiliary needle cylinder in an abutting mode, the front end of the rectangular auxiliary shell is fixedly connected with the right side portion of the rectangular main shell and comprises a connecting tee joint, a tee joint connecting column, an L-shaped tee joint supporting block, an L-shaped tee joint installing groove rotating torsion spring and an L-shaped tee joint installing groove supporting column, the L-shaped tee joint installing groove supporting column is fixedly installed on the bottom plate of the rectangular main shell, the L-shaped tee joint installing groove is rotatably installed on the L-shaped tee joint installing groove supporting column, the L-shaped tee joint installing groove rotating torsion spring is sleeved on the L-shaped tee joint installing groove supporting column, and the upper end of the L-shaped tee joint installing groove rotating torsion spring is fixedly installed at the bottom of the L-shaped tee joint installing groove, the lower end of the L-shaped tee joint mounting groove rotating torsion spring is fixedly mounted on an L-shaped tee joint mounting groove support column, the L-shaped tee joint support block is mounted in the L-shaped tee joint mounting groove, the lower end of the tee joint connection column is fixedly connected with the L-shaped tee joint support block, the upper end of the tee joint connection column is fixedly connected with a connection tee joint, an L-shaped opening is formed in a top plate of the rectangular main shell, the height of the connection tee joint is higher than that of the L-shaped tee joint mounting groove, the L-shaped tee joint support block, the L-shaped tee joint mounting groove and the L-shaped tee joint mounting groove support column are all located inside the rectangular main shell, the connection tee joint is located above the rectangular main shell and comprises a tee joint first interface, a tee joint second interface and a tee joint third interface, the tee joint first interface is connected with the main needle cylinder, and the tee joint second interface is connected with the auxiliary needle cylinder, the three-way third interface is connected with a needle head and comprises a trigger pushing sleeve, a trigger transverse positioning column, a trigger spring, a trigger sleeve ring, a trigger block and a trigger block bracket, the front end of the trigger transverse positioning column is fixedly arranged on a front vertical plate of the rectangular main shell, the trigger pushing sleeve ring is sleeved on the trigger transverse positioning column, the outer side of the trigger pushing sleeve is fixedly connected with the outer side of the main upper sliding sleeve, the trigger sleeve ring and the trigger spring are sleeved on the trigger transverse positioning column, the trigger sleeve ring is positioned between the trigger spring and the trigger pushing sleeve, the front end of the trigger spring is abutted against the inner wall of the rectangular main shell, the rear end of the trigger spring is abutted against the front end of the trigger pushing sleeve, the top of the trigger block is fixedly connected with the bottom of the trigger sleeve ring, and the trigger block bracket is fixedly arranged on a bottom plate of the rectangular main shell, the trigger block is movably sleeved on the trigger block support, the trigger block is provided with a trigger hook head, the trigger hook head is matched with an L-shaped three-way mounting groove, the main lock comprises a main lock mounting shell, a main lock inserting column and a main lock inserting column supporting spring, the main lock mounting shell is fixedly mounted on the side part of the rectangular main shell, a main lock inserting column jack is arranged on the side part of the rectangular main shell in front of the main lock mounting shell, the main lock inserting column can be inserted into the main lock inserting column jack to be matched with the main lower sliding sleeve, the main lock inserting column and the main lock inserting column supporting spring are both mounted in the main lock mounting shell, the front end of the main lock inserting column supporting spring is in butt fit with the tail end of the main lock inserting column, the tail end of the main lock inserting column supporting spring is in butt fit with the inner wall of the main lock mounting shell, the side part of the main lock mounting shell is provided with a main lock mounting shell slit, the secondary lock comprises a secondary lock mounting shell, a secondary lock inserting column and a secondary lock inserting column supporting spring, wherein the secondary lock mounting shell is fixedly mounted on the lateral part of the rectangular secondary shell, the secondary lock inserting column supporting spring is arranged on the lateral part of the rectangular secondary shell in front of the secondary lock mounting shell, the secondary lock inserting column can be inserted into the secondary lock inserting column jack and matched with the secondary lower sliding sleeve, the secondary lock inserting column and the secondary lock inserting column supporting spring are both mounted in the secondary lock mounting shell, the front end of the secondary lock inserting column supporting spring is in butt joint with the tail end of the secondary lock inserting column, the tail end of the secondary lock inserting column supporting spring is matched with the inner wall of the secondary lock mounting shell, the secondary lock mounting shell is arranged on the lateral part of the secondary lock mounting shell in a butt joint manner, and the secondary lock inserting column mounting shell is provided with a slotted lock mounting shell, the secondary lock inserting column is arranged on the slotted lock mounting shell, and the secondary lock inserting column supporting spring can be arranged in the slotted lock mounting shell,

therefore, when the ultrasonic contrast agent is used, the ultrasonic contrast agent is firstly extracted from the main needle cylinder, the physiological saline is firstly extracted from the auxiliary needle cylinder, the three-way first connector is connected with the main needle cylinder, the three-way second connector is connected with the auxiliary needle cylinder, the three-way third connector is connected with the needle head, the spliced whole body is then installed, the connecting tee is installed on the L-shaped three-way installation groove through the L-shaped three-way support block, the main needle cylinder is installed between the main left clamping piece and the main right clamping piece, the auxiliary needle cylinder is installed between the auxiliary left clamping piece and the auxiliary right clamping piece, the L-shaped three-way installation groove is hooked by the trigger hook head, so that the torsion of the trigger spring acts on the L-shaped three-way installation groove, then the main lock inserting column deflector rod is pulled and clamped into the slotted notch of the main lock installation shell, the main lock inserting column leaves the main lower sliding sleeve, the main lower sliding sleeve is unlocked, and the main upper sliding sleeve and the main lower sliding sleeve rapidly move forwards under the action of the main support spring and the main spring respectively, thereby driving the main upward pushing column to move forward rapidly, the main upward pushing column driving the main upward piston pushing disc to move forward rapidly, the main upward piston pushing disc driving the piston of the main needle cylinder to move forward rapidly, so that the ultrasonic contrast agent in the main needle cylinder is injected into the peripheral vein of the examined person rapidly, at the moment, the trigger pushing sleeve moving forward to push the trigger sleeve ring to move, the trigger sleeve ring moving forward to drive the trigger block to move, the trigger block moving to drive the trigger hook head, the trigger hook head moving away from the L-shaped three-way mounting groove, the L-shaped three-way mounting groove being unlocked, the L-shaped three-way mounting groove rotating under the torsion action of the trigger spring, the L-shaped three-way mounting groove rotating to drive the three-way connecting column rotating to drive the connecting three-way valve core to rotate to close the three-way first interface, the ultrasonic contrast agent injection channel is closed, and the generation of counter flow during the injection of physiological saline is avoided, therefore, the normal saline can not enter a main syringe for injecting the ultrasonic contrast agent, then the auxiliary lock plunger deflector rod is pulled and clamped on the slotted notch of the auxiliary lock mounting shell, the auxiliary lock plunger leaves the main lower sliding sleeve, the auxiliary lower sliding sleeve is unlocked, the auxiliary upper sliding sleeve and the auxiliary lower sliding sleeve move forward rapidly under the action of the auxiliary upper supporting spring and the auxiliary lower supporting spring respectively, so as to drive the auxiliary upper push post to move forward rapidly, the auxiliary upper push post drives the auxiliary upper piston push disc to move forward rapidly, the auxiliary upper piston push disc drives the piston of the auxiliary syringe to move forward rapidly, the normal saline in the auxiliary syringe is injected into the peripheral vein of a detected person rapidly, and the diagnosis accuracy is greatly improved.

Further, the main lower positioning cylinder is sleeved with a main lower cushion pad, the main lower cushion pad is matched with the main lower sliding sleeve, the main upper positioning cylinder is sleeved with a main upper cushion pad, the main upper cushion pad is matched with the main upper sliding sleeve, the auxiliary lower positioning cylinder is sleeved with an auxiliary lower cushion pad, the auxiliary lower cushion pad is matched with the auxiliary lower sliding sleeve, the auxiliary upper positioning cylinder is sleeved with an auxiliary upper cushion pad, the auxiliary upper cushion pad is matched with the auxiliary upper sliding sleeve, so that the heads of the main lower sliding sleeve and the main upper sliding sleeve respectively impact on the main lower cushion pad and the main upper cushion pad, direct impact on the main mounting vertical plate is avoided, the heads of the auxiliary lower sliding sleeve and the auxiliary upper sliding sleeve respectively impact on the auxiliary lower cushion pad and the auxiliary upper cushion pad, direct impact on the auxiliary mounting vertical plate is avoided, noise can be reduced, the damage is avoided, and the use is more permanent.

Furthermore, the tail of the main pull rod is provided with a main circular pull disc, and the tail of the auxiliary pull rod is provided with an auxiliary circular pull disc, so that labor is saved when the main pull rod and the auxiliary pull rod are pulled.

Furthermore, main left clamping piece and main right clamping piece are flexible elastic clamping piece, vice left clamping piece and vice right clamping piece are flexible elastic clamping piece for it is more convenient when laying main needle section of thick bamboo and vice needle section of thick bamboo, and the installation of main needle section of thick bamboo and vice needle section of thick bamboo is more firm.

The invention is further described with reference to the following figures and detailed description.

Drawings

FIG. 1 is one of the schematic internal structural diagrams of the mechanism for mechanically injecting an ultrasound contrast agent provided by the present invention;

FIG. 2 is a second schematic diagram of the internal structure of the mechanism for mechanically injecting ultrasound contrast agent provided by the present invention;

FIG. 3 is a third schematic diagram of the internal structure of the mechanism for mechanically injecting an ultrasound contrast agent according to the present invention;

FIG. 4 is a second schematic structural diagram of a mechanism for mechanically injecting an ultrasound contrast agent according to the present invention;

FIG. 5 is a first schematic structural diagram of a main lock of a mechanism for mechanically injecting an ultrasound contrast agent according to the present invention;

FIG. 6 is a second schematic structural diagram of a main lock of the mechanism for mechanically injecting an ultrasound contrast agent according to the present invention;

FIG. 7 is one of the schematic structural diagrams of the secondary lock of the mechanism for mechanically injecting an ultrasound contrast agent provided by the present invention;

fig. 8 is a second schematic structural diagram of a secondary lock of the mechanism for mechanically injecting an ultrasound contrast medium provided by the present invention.

Detailed Description

As shown in fig. 1, 2, 3, 4, 5, 6, 7 and 8, an embodiment of a mechanism for mechanically injecting an ultrasound contrast agent according to the present invention includes a rectangular main housing 1, a main mounting upright 1-1, a main lower positioning cylinder 2, a main upper positioning cylinder 3, a main lower sliding sleeve 4, a main upper sliding sleeve 5, a main lower supporting spring 6, a main upper supporting spring 7, a main pull rod 8, a main upper push column 9, a main upper piston push disk 10, a main left clamping piece 11, a main right clamping piece 12, a main needle cylinder 13 and a main lock 14, wherein the main mounting upright 1-1 is fixedly mounted in the rectangular main housing 1, a front end of the main lower positioning cylinder 2 is fixedly mounted on the main mounting upright 1-1, a front end of the main upper positioning cylinder 3 is fixedly mounted on the main mounting upright 1-1, a main clamping gap 15 is formed between the main lower positioning cylinder 2 and the main upper positioning cylinder 3, the main lower sliding sleeve 4 is arranged on the main lower positioning cylinder 2, the main upper sliding sleeve 5 is arranged on the main upper positioning cylinder 3, the top of the main lower sliding sleeve 4 is connected with the bottom of the main upper sliding sleeve 5, the front end of the main pull rod 8 is connected with the tail of the main upper sliding sleeve 5, the rear end of the main pull rod 8 is positioned outside the rectangular main shell 1, the main pull rod 8 is positioned in the main crack 15, the front end of the main lower supporting spring 6 is fixed on the tail of the main lower sliding sleeve 4, the rear end of the main lower supporting spring 6 is fixed on the tail of the main lower positioning cylinder 2, the front end of the main upper supporting spring 7 is fixed on the tail of the main upper sliding sleeve 5, the rear end of the main upper supporting spring 7 is fixed on the tail of the main upper positioning cylinder 3, the main upper pushing column 9 is fixedly arranged on the main upper sliding sleeve 5, the main upper piston push disk 10 is fixedly arranged on a main upper push column 9, a main upper push column front and rear displacement hole is arranged on the rectangular main shell 1, the main upper push column 9 extends out of the main upper push column front and rear displacement hole, the main upper piston push disk 10 is positioned above the main upper push column front and rear displacement hole, the main left clamping piece 11 and the main right clamping piece 12 are both fixedly arranged on the top of the rectangular main shell 1, the main needle cylinder 13 is arranged between the main left clamping piece 11 and the main right clamping piece 12, the main upper piston push disk 10 is in butt fit with a piston of the main needle cylinder 13, and comprises a rectangular auxiliary shell 16, an auxiliary mounting vertical plate 17, an auxiliary lower positioning column 18, an auxiliary upper positioning column 19, an auxiliary lower sliding sleeve 20, an auxiliary upper sliding sleeve 21, an auxiliary lower supporting spring 22, an auxiliary upper supporting spring 23, an auxiliary pull rod 24, an auxiliary upper push column 25, an auxiliary upper piston push disk 26, an auxiliary left clamping piece 27, an auxiliary right clamping piece 28, an auxiliary needle cylinder 29 and an auxiliary lock 30, the auxiliary mounting vertical plate 17 is fixedly mounted in a rectangular auxiliary housing 16, the front end of an auxiliary lower positioning cylinder 18 is fixedly mounted on the auxiliary mounting vertical plate 17, the front end of an auxiliary upper positioning cylinder 19 is fixedly mounted on the auxiliary mounting vertical plate 17, an auxiliary crack 31 is formed between the auxiliary lower positioning cylinder 18 and the auxiliary upper positioning cylinder 19, an auxiliary lower sliding sleeve 20 is arranged on the auxiliary lower positioning cylinder 18, an auxiliary upper sliding sleeve 21 is arranged on the auxiliary upper positioning cylinder 19, the top of the auxiliary lower sliding sleeve 20 is connected with the bottom of the auxiliary upper sliding sleeve 21, the front end of an auxiliary pull rod 24 is connected with the tail of the auxiliary upper sliding sleeve 21, the rear end of the auxiliary pull rod 24 is positioned outside the rectangular auxiliary housing 16, the auxiliary pull rod 24 is positioned in the auxiliary crack 31, and the front end of an auxiliary lower supporting spring 22 is fixed on the tail of the auxiliary lower sliding sleeve 20, the rear end of the auxiliary lower supporting spring 22 is fixed on the tail of the auxiliary lower positioning cylinder 18, the front end of the auxiliary upper supporting spring 23 is fixed on the tail of the auxiliary upper sliding sleeve 21, the rear end of the auxiliary upper supporting spring 23 is fixed on the tail of the auxiliary upper positioning cylinder 19, the auxiliary upper pushing column 25 is fixedly installed on the auxiliary upper sliding sleeve 21, the auxiliary upper piston pushing disc 26 is fixedly installed on the auxiliary upper pushing column 25, the rectangular auxiliary shell 16 is provided with auxiliary upper pushing column front and rear displacement holes, the auxiliary upper pushing column 25 extends out of the auxiliary upper pushing column front and rear displacement holes, the auxiliary upper piston pushing disc 26 is located above the auxiliary upper pushing column front and rear displacement holes, the auxiliary left clamping piece 27 and the auxiliary right clamping piece 28 are fixedly installed on the top of the rectangular auxiliary shell 16, the auxiliary needle cylinder 29 is installed between the auxiliary left clamping piece 27 and the auxiliary right clamping piece 28, the auxiliary upper piston push disc 26 is matched with the auxiliary needle cylinder 29 in a butt joint manner, the front end of the rectangular auxiliary shell 16 is fixedly connected with the right side part of the rectangular main shell 1 and comprises a connecting tee joint a1, a tee joint connecting post a2, an L-shaped tee joint supporting block a3, an L-shaped tee joint mounting groove a4, an L-shaped tee joint mounting groove rotating torsion spring a8 and an L-shaped tee joint mounting groove supporting post a5, the L-shaped tee joint mounting groove supporting post a5 is fixedly arranged on the bottom plate of the rectangular main shell 1, the L-shaped tee joint mounting groove a4 is rotatably arranged on the L-shaped tee joint mounting groove supporting post a5, the L-shaped tee joint mounting groove rotating torsion spring a8 is sleeved on the L-shaped tee joint mounting groove supporting post a5, the upper end of the L-shaped tee joint mounting groove rotating torsion spring a8 is fixedly arranged at the bottom of the L-shaped tee joint mounting groove a4, and the lower end of the L-shaped tee joint mounting groove rotating torsion spring a8 is fixedly arranged on the L-shaped tee joint mounting groove supporting post a5, the L-shaped tee joint support block is arranged in an L-shaped tee joint installation groove a4, the lower end of a tee joint connection post a2 is fixedly connected with an L-shaped tee joint support block a3, the upper end of the tee joint connection post a2 is fixedly connected with a connection tee joint a1, an L-shaped opening a6 is arranged on a top plate of the rectangular main shell 1, the height of the connection tee joint a1 is higher than that of the L-shaped tee joint installation groove a4, the L-shaped tee joint support block a3, the L-shaped tee joint installation groove a4 and an L-shaped tee joint installation groove support column a5 are all positioned in the rectangular main shell 1, the connection tee joint a1 is positioned above the rectangular main shell 1, the connection tee joint a1 comprises a tee joint first interface, a tee joint second interface and a tee joint third interface, the tee joint first interface is connected with a main needle cylinder 13, the tee joint second interface is connected with an auxiliary needle cylinder 29, and a needle a7 is connected with the tee joint third interface, the trigger mechanism comprises a trigger pushing sleeve a9, a trigger transverse positioning column a10, a trigger spring a11, a trigger sleeve ring a12, a trigger block a13 and a trigger block support a14, wherein the front end of the trigger transverse positioning column a10 is fixedly arranged on a front vertical plate of a rectangular main shell 1, the trigger pushing sleeve a9 is sleeved on the trigger transverse positioning column a10, the outer side of the trigger pushing sleeve a9 is fixedly connected with the outer side of a main upper sliding sleeve 5, the trigger sleeve ring a12 and the trigger spring a11 are both sleeved on the trigger transverse positioning column a10, the trigger sleeve ring a12 is positioned between the trigger spring a11 and the trigger pushing sleeve a9, the front end of the trigger spring a11 is abutted against the inner wall of the rectangular main shell 1, the rear end of the trigger spring a11 is abutted against the front end of the trigger pushing sleeve a9, the top of the trigger block a13 is fixedly connected with the bottom of the trigger sleeve ring a12, and the trigger block support a14 is fixedly arranged on a bottom plate of the rectangular main shell 1, the trigger block a13 is movably sleeved on a trigger block support a14, a trigger hook head a15 is arranged on the trigger block a13, the trigger hook head a15 is matched with an L-shaped three-way mounting groove a4, the main lock 14 comprises a main lock mounting shell 1-2, a main lock inserting column 1-3 and a main lock inserting column supporting spring 1-4, the main lock mounting shell 1-2 is fixedly mounted on the side part of a rectangular main shell 1, a main lock inserting column jack is arranged on the side part of the rectangular main shell 1 in front of the main lock mounting shell 1-2, the main lock inserting column 1-3 can be inserted into the main lock inserting column jack to be matched with a main lower sliding sleeve 4, the main lock inserting column 1-3 and the main lock inserting column supporting spring 1-4 are both mounted in the main lock mounting shell 1-2, the front end of the main lock inserted column supporting spring 1-4 is in butt fit with the tail end of the main lock inserted column 1-3, the tail end of the main lock inserted column supporting spring 1-4 is in butt fit with the inner wall of the main lock mounting shell 1-2, the side part of the main lock mounting shell 1-2 is provided with a main lock mounting shell slit 1-6, the main lock mounting shell slit 1-6 is provided with a main lock mounting shell slit notch 1-7, the side part of the main lock inserted column 1-3 is provided with a main lock inserted column deflector rod 1-8, the main lock inserted column deflector rod 1-8 extends out of the main lock mounting shell slit 1-6, the main lock inserted column deflector rod 1-8 can be clamped on the main lock mounting shell slit notch 1-7, the auxiliary lock 30 comprises an auxiliary lock mounting shell 1-9, an auxiliary lock inserted column 1-10 and an auxiliary lock inserted column supporting spring 1-11, the auxiliary lock mounting shell 1-9 is fixedly mounted on the side portion of a rectangular auxiliary shell 16, auxiliary lock insert post inserting holes are formed in the side portion of the rectangular auxiliary shell 16 in front of the auxiliary lock mounting shell 1-9, auxiliary lock insert posts 1-10 can be inserted into the auxiliary lock insert post inserting holes to be matched with an auxiliary lower sliding sleeve 20, the auxiliary lock insert posts 1-10 and auxiliary lock insert post supporting springs 1-11 are mounted in the auxiliary lock mounting shell 1-9, the front ends of the auxiliary lock insert post supporting springs 1-11 are in butt fit with the tail ends of the auxiliary lock insert posts 1-10, the tail ends of the auxiliary lock insert post supporting springs 1-11 are in butt fit with the inner wall of the auxiliary lock mounting shell 1-9, auxiliary lock mounting shell slits 1-13 are formed in the side portion of the auxiliary lock mounting shell 1-9, auxiliary lock mounting shell slits 1-14 are formed in the auxiliary lock mounting shell slits 1-13, auxiliary lock mounting shell slits 1-14 are formed in the auxiliary lock mounting shell slits 1-10, auxiliary lock insert posts 1-10 are provided on the side portion to be provided with auxiliary lock insert post driving levers 1-15, the auxiliary lock insert post mounting shell slits 1-15 are in the upper and lower cylindrical positioning sleeve of the auxiliary lock mounting shell, the upper and the auxiliary cylindrical lock mounting buffer pads 2, the upper and the lower cylindrical lock mounting buffer lever 2 is matched with the upper positioning buffer cushion 2, the upper positioning sleeve 14, the upper positioning cylindrical lock positioning sleeve 21-lower cylindrical positioning buffer cushion 2, the upper positioning buffer and the upper positioning buffer cushion 2, the lower cylindrical lock mounting shell, the upper positioning buffer cushion 2 is matched with the upper positioning buffer cushion 2, the upper positioning buffer cushion 3, the lower buffer cushion 3, the upper positioning buffer cushion 2 upper positioning buffer cushion 3 and the lower buffer cushion 3, the lower buffer cushion 2, the upper positioning buffer 14, the lower buffer cushion 2 upper positioning buffer cushion 3, the afterbody of main pull rod 8 is equipped with main circular drawing dish, the afterbody of vice pull rod 24 is equipped with vice circular drawing dish, main left clamping piece 11 and main right clamping piece 12 are the elasticity clamping piece that can deform, vice left clamping piece 27 and vice right clamping piece 28 are the elasticity clamping piece that can deform.

As required, detailed embodiments of the present invention are disclosed herein, but it is to be understood that the disclosed embodiments are merely exemplary of the invention that may be embodied in various and alternative forms. The figures are not necessarily to scale. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Claims

1. Mechanism of ultrasonic contrast agent is injected to mechanical type, its characterized in that: comprises a rectangular main shell (1), a main mounting vertical plate (1-1), a main lower positioning cylinder (2), a main upper positioning cylinder (3), a main lower sliding sleeve (4), a main upper sliding sleeve (5), a main lower supporting spring (6), a main upper supporting spring (7), a main pull rod (8), a main upper pushing column (9), a main upper piston pushing disc (10), a main left clamping piece (11), a main right clamping piece (12), a main needle cylinder (13) and a main lock (14), wherein the main mounting vertical plate (1-1) is fixedly mounted in the rectangular main shell (1), the front end of the main lower positioning cylinder (2) is fixedly mounted on the main mounting vertical plate (1-1), the front end of the main upper positioning cylinder (3) is fixedly mounted on the main mounting vertical plate (1-1), a main crack (15) is arranged between the main lower positioning cylinder (2) and the main upper positioning cylinder (3), the main lower positioning cylinder (4) is arranged on the main lower positioning cylinder (2), the main upper sliding sleeve (5) is arranged on the main lower positioning cylinder (3), the main housing upper positioning cylinder (3), the main upper positioning cylinder (5) is connected with the main pull rod (8), the main upper positioning cylinder (8) and the main lower positioning cylinder (5), the main upper sliding sleeve (1) is connected with the main pulling column (8), the main pull rod (8) is positioned in a main crack (15), the front end of the main lower supporting spring (6) is fixed on the tail part of the main lower sliding sleeve (4), the rear end of the main lower supporting spring (6) is fixed on the tail part of the main lower positioning cylinder (2), the front end of the main upper supporting spring (7) is fixed on the tail part of the main upper sliding sleeve (5), the rear end of the main upper supporting spring (7) is fixed on the tail part of the main upper positioning cylinder (3), the main upper pushing column (9) is fixedly arranged on the main upper sliding sleeve (5), the main upper piston pushing disc (10) is fixedly arranged on the main upper pushing column (9), be equipped with main front and back displacement hole of post that pushes away on rectangular main casing body (1), main front and back displacement hole of post that pushes away is stretched out in main front and back displacement hole of post (9) follow main front and back of pushing away, main piston pushing away dish (10) is located main front and back displacement hole top of post that pushes away, main left clamping piece (11) and main right clamping piece (12) equal fixed mounting are on the top of rectangular main casing body (1), install between main left clamping piece (11) and main right clamping piece (12) main needle cylinder (13), main piston pushing away dish (10) and the piston butt cooperation of main needle cylinder (13), including rectangular vice casing (16), vice installation riser (17), vice location cylinder (18) down, vice location cylinder (19) of going up in, vice, the auxiliary lower sliding sleeve (20), the auxiliary upper sliding sleeve (21), the auxiliary lower supporting spring (22), the auxiliary upper supporting spring (23), the auxiliary pull rod (24), the auxiliary upper push column (25), the auxiliary upper piston push disc (26), the auxiliary left clamping piece (27), the auxiliary right clamping piece (28), the auxiliary needle cylinder (29) and the auxiliary lock (30), the auxiliary mounting vertical plate (17) is fixedly mounted in the rectangular auxiliary shell (16), the front end of the auxiliary lower positioning cylinder (18) is fixedly mounted on the auxiliary mounting vertical plate (17), the front end of the auxiliary upper positioning cylinder (19) is fixedly mounted on the auxiliary mounting vertical plate (17), an auxiliary crack (31) is arranged between the auxiliary lower positioning cylinder (18) and the auxiliary upper positioning cylinder (19), the auxiliary lower sliding sleeve (20) is arranged on the auxiliary lower positioning cylinder (18), the auxiliary upper sliding sleeve (21) is arranged on the auxiliary upper positioning cylinder (19), the top of the auxiliary lower sliding sleeve (20) is connected with the bottom of the auxiliary lower sliding sleeve (21), the front end of the auxiliary lower sliding sleeve (24) is fixed with the rectangular auxiliary lower sliding sleeve (24), and the auxiliary lower sliding sleeve (24) is arranged at the tail of the auxiliary pull rod (24), the rear end of the auxiliary lower supporting spring (22) is fixed on the tail of the auxiliary lower positioning cylinder (18), the front end of the auxiliary upper supporting spring (23) is fixed on the tail of the auxiliary upper sliding sleeve (21), the rear end of the auxiliary upper supporting spring (23) is fixed on the tail of the auxiliary upper positioning cylinder (19), the auxiliary upper pushing column (25) is fixedly installed on the auxiliary upper sliding sleeve (21), the auxiliary upper piston pushing disc (26) is fixedly installed on the auxiliary upper pushing column (25), an auxiliary upper pushing column front and rear displacement hole is formed in the rectangular auxiliary shell (16), the auxiliary upper pushing column (25) extends out of the auxiliary upper pushing column front and rear displacement hole, the auxiliary upper piston pushing disc (26) is located above the auxiliary upper pushing column front and rear displacement hole, the auxiliary left clamping sheet (27) and the auxiliary right clamping sheet (28) are fixedly installed on the top of the rectangular auxiliary shell (16), the auxiliary left clamping sheet (29) is installed between the auxiliary left clamping sheet (27) and the auxiliary clamping sheet (28), the auxiliary upper piston pushing disc (26) is abutted against the rectangular main shell (29), and the front end of the rectangular auxiliary needle cylinder (16) is connected with the rectangular main shell (29);

including connecting tee bend (a 1), tee bend spliced pole (a 2), L shape tee bend supporting shoe (a 3), L shape tee bend mounting groove (a 4), L shape tee bend mounting groove rotate torsional spring (a 8) and L shape tee bend mounting groove support column (a 5), L shape tee bend mounting groove support column (a 5) fixed mounting is on the bottom plate of the rectangular main casing body (1), L shape tee bend mounting groove (a 4) rotatable install on L shape tee bend mounting groove support column (a 5), L shape tee bend mounting groove rotates torsional spring (a 8) cover and establishes on L shape tee bend mounting groove support column (a 5), the upper end fixed mounting that L shape tee bend mounting groove rotated torsional spring (a 8) is in the bottom of L shape tee bend mounting groove (a 4), L shape tee bend mounting groove rotates the lower extreme fixed mounting that torsional spring (a 8) on L shape tee bend mounting groove support column (a 5), rectangle shape tee bend supporting shoe is installed in L shape tee bend mounting groove (a 4), the lower extreme and L shape tee bend supporting shoe (a 3) fixed connection of tee bend spliced pole (a 2) are located L shape tee bend mounting groove (a 3), the tee bend mounting groove (a 1 a 3) is higher than L shape tee bend mounting groove (a 5), the tee bend mounting groove (a 3) of L shape tee bend mounting groove (a 6, the tee bend mounting groove is higher than L shape tee bend mounting groove (a 3, the tee bend mounting groove (a) and the tee bend mounting groove (a) are all located the tee bend mounting groove (a) of L shape tee bend mounting groove (a 3), the tee bend mounting groove (a 3) of L shape is higher than the tee bend mounting groove (a 3, the tee bend mounting groove (a) of L shape is higher than the tee bend mounting groove (a) of L shape 1), the connecting tee joint (a 1) is located above a rectangular main shell (1), the connecting tee joint (a 1) comprises a tee joint first interface, a tee joint second interface and a tee joint third interface, the tee joint first interface is connected with a main needle cylinder (13), the tee joint second interface is connected with an auxiliary needle cylinder (29), a needle head (a 7) is connected onto the tee joint third interface and comprises a triggering pushing sleeve (a 9), a triggering transverse positioning column (a 10), a triggering spring (a 11), a triggering sleeve ring (a 12), a triggering block (a 13) and a triggering block support (a 14), the front end of the triggering transverse positioning column (a 10) is fixedly installed on a front vertical plate of the rectangular main shell (1), the triggering pushing sleeve (a 9) is sleeved on the triggering transverse positioning column (a 10), the outer side of the triggering pushing sleeve (a 9) is fixedly connected with the outer side of a main upper sliding sleeve (5), the triggering sleeve ring (a 12) and the triggering spring (a 11) are both sleeved on the triggering transverse positioning column (a 10), the triggering sleeve ring (a 12) and the triggering sleeve (a 12) is connected with the triggering block (a) at the triggering sleeve (11) at the top and the triggering block (a 13) at the triggering end of the triggering sleeve (a) and the triggering sleeve (a 9), the trigger block support (a 14) is fixedly arranged on a bottom plate of the rectangular main shell (1), the trigger block (a 13) is movably sleeved on the trigger block support (a 14), a trigger hook head (a 15) is arranged on the trigger block (a 13), the trigger hook head (a 15) is matched with an L-shaped three-way mounting groove (a 4), the main lock (14) comprises a main lock mounting shell (1-2), a main lock plunger (1-3) and a main lock plunger supporting spring (1-4), the main lock mounting shell (1-2) is fixedly arranged on the side part of the rectangular main shell (1), a main lock plunger jack is arranged on the side part of the rectangular main shell (1) in front of the main lock mounting shell (1-2), the main lock plunger (1-3) can be inserted into the main lock plunger jack to be matched with the main lower sliding sleeve (4), the main lock plunger (1-3) and the main lock plunger supporting spring (1-4) are both mounted in the main lock mounting shell (1-2), the main lock plunger supporting spring (1-4) is abutted against the main lock plunger mounting shell (1-2), and the main lock plunger supporting spring (1-4) is matched with the main lock plunger mounting shell (1-2), the lock is characterized in that a main lock mounting shell slotted notch (1-7) is formed in a main lock mounting shell slotted opening (1-6), a main lock plunger driving rod (1-8) is arranged on the side portion of a main lock plunger (1-3), the main lock plunger driving rod (1-8) extends out of the main lock mounting shell slotted opening (1-6), the main lock plunger driving rod (1-8) can be clamped in the main lock mounting shell slotted notch (1-7), the auxiliary lock (30) comprises an auxiliary lock mounting shell (1-9), auxiliary lock plungers (1-10) and auxiliary lock plunger supporting springs (1-11), the auxiliary lock mounting shell (1-9) is fixedly mounted on the side portion of a rectangular auxiliary shell (16), the auxiliary lock mounting shell (1-9) is provided with auxiliary lock plunger inserting holes on the side portion of the rectangular auxiliary shell (16), the auxiliary lock plungers (1-10) can be inserted into the auxiliary lock plunger inserting holes to be abutted against an auxiliary sliding sleeve (20), the auxiliary lock mounting shell (1-10) is mounted in front of the auxiliary lock mounting shell (1-10) and is abutted against the auxiliary lock plunger supporting spring (1-11), and the auxiliary lock mounting shell (1-11) is matched with the auxiliary lock plunger supporting spring at the tail end of the auxiliary lock mounting shell (1-11), auxiliary lock mounting shell slots (1-13) are formed in the side portions of the auxiliary lock mounting shells (1-9), auxiliary lock mounting shell slot notches (1-14) are formed in the auxiliary lock mounting shell slots (1-13), auxiliary lock inserting column shift rods (1-15) are arranged on the side portions of the auxiliary lock inserting columns (1-10), the auxiliary lock inserting column shift rods (1-15) extend out of the auxiliary lock mounting shell slots (1-13), and the auxiliary lock inserting column shift rods (1-15) can be clamped in the auxiliary lock mounting shell slot notches (1-14);

a main lower buffer pad is sleeved on the main lower positioning cylinder (2), the main lower buffer pad is matched with the main lower sliding sleeve (4), a main upper buffer pad is sleeved on the main upper positioning cylinder (3), the main upper buffer pad is matched with the main upper sliding sleeve (5), an auxiliary lower buffer pad is sleeved on the auxiliary lower positioning cylinder (18), the auxiliary lower buffer pad is matched with the auxiliary lower sliding sleeve (20), an auxiliary upper buffer pad is sleeved on the auxiliary upper positioning cylinder (19), and the auxiliary upper buffer pad is matched with the auxiliary upper sliding sleeve (21);

the tail part of the main pull rod (8) is provided with a main circular pull disc, and the tail part of the auxiliary pull rod (24) is provided with an auxiliary circular pull disc;

the main left clamping piece (11) and the main right clamping piece (12) are deformable elastic clamping pieces, and the auxiliary left clamping piece (27) and the auxiliary right clamping piece (28) are deformable elastic clamping pieces.