CN113653410A

CN113653410A - Three-lock linkage structure

Info

Publication number: CN113653410A
Application number: CN202111048417.1A
Authority: CN
Inventors: 陈凯; 张烜; 侯卓羽
Original assignee: Shandong Shengdian Century Technology Co ltd
Current assignee: Shandong Shengdian Century Technology Co ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2021-11-16

Abstract

The invention provides a three-lock linkage structure, and belongs to the technical field of anti-theft locks. The three-lock linkage structure comprises a main body, a main push plate and a push-pull mechanism. The swing arm is arranged on the main push plate, the push-pull mechanisms are hinged to two ends of the swing arm, three locks are arranged on the main push plate, a lock tongue baffle is slidably mounted at the lock tongue of each lock, a first swing rod, a second swing rod and a third swing rod are hinged to each lock tongue baffle respectively, one end, close to each first swing rod and the second swing rod, of each first swing rod is hinged to the corresponding push-pull mechanism, one end, close to each second swing rod and the corresponding third swing rod, of each second swing rod is hinged to the corresponding other push-pull mechanism, one end, far away from each second swing rod, of each first swing rod and one end, far away from each second swing rod, of each third swing rod are hinged to the corresponding first connecting arm, two ends of each first connecting arm extend towards the directions of the corresponding two push-pull mechanisms and are hinged together, the lock can be opened by two locks at will be achieved by the three locks, the lock tongues are not stressed, the service life of the locks is guaranteed, misoperation of the main push plate can not occur, the use effect is improved, and the use safety and the use reliability are improved.

Description

Three-lock linkage structure

Technical Field

The invention relates to the technical field of anti-theft locks, in particular to a three-lock linkage structure.

Background

At present, multi-lock control is widely applied to the fields of safe cases, secret cabinets, vault doors and the like because of strong anti-theft performance. Currently, multi-lock control is typically: the spring bolt part and the drive structure fixed connection of lock through the spring bolt different with the drive structure direction, control drive structure when the switch lock and change and realize many locks control mutually, and this kind of structure can cause the influence to the life-span of lock inner structure spare because of the spring bolt needs the atress, and use cost is high.

Many locks control structure is in the realization in-process, and the existence is opened a lock to enable the set bar to carry out certain removal, this kind of removal can cause certain puzzlement to the user, causes the problem that the user thinks the door by mistake and has opened to take place, and the result of use is poor.

Meanwhile, the requirement on the machining precision of the transmission structure is high, if the machining precision is low and machining errors exist, when one lock is opened, the transmission structure can also be out of work with the cooperation of the spring bolts of other locks, the lock bolt is opened, the significance of multi-lock control is lost, and the use safety and the reliability are poor.

Disclosure of Invention

The embodiment of the invention provides a three-lock linkage structure, which aims to solve the problem of influence on the service life of an internal structural part of a lock and achieve the aims of improving the use effect, the use safety and the reliability.

In view of the above problems, the technical solution proposed by the present invention is:

a three-lock linkage structure comprises a main body, a main push plate and a push-pull mechanism.

The mounting body comprises a bottom plate and a mounting plate, the mounting plate is arranged on the surface of the bottom plate, the top surface of the mounting plate is close to two sides and is provided with mounting lugs, the two mounting lugs are fixedly connected with the top surface of the mounting plate, the surfaces of the two mounting lugs are respectively provided with a third sliding positioning guide groove and a fourth sliding positioning guide groove, the central shafts of the third sliding positioning guide groove and the fourth sliding positioning guide groove are positioned on the same straight line, a first connecting arm is arranged above the two third sliding positioning guide grooves, the two ends of the first connecting arm are respectively provided with an extending end, the central shafts of the two extending ends are respectively vertical to the central shaft of the first connecting arm and are positioned on the same horizontal plane, the top surface of the mounting plate is close to the central part and is provided with a first sliding positioning guide groove and a fourth guiding long hole, and the number of the first sliding positioning guide groove and the fourth guiding long hole is three groups, the number of the first sliding positioning guide grooves in each group of the first sliding positioning guide grooves and the fourth sliding positioning guide grooves is two, the fourth sliding positioning guide grooves are arranged between the two first sliding positioning guide grooves, a second sliding positioning guide groove is formed in the position, close to one side, of the top surface of the mounting plate, and the number of the second sliding positioning guide grooves is two;

the main push plate is E-shaped, second guiding long holes are formed in the surface of the main push plate close to two sides, the number of the second guiding long holes is two, a third guiding long hole and a moving long groove are formed in the middle of the main push plate, avoidance long holes are formed in the surface of the middle of the main push plate close to two sides of the main push plate, swing arms are arranged above the two avoidance long holes, and two ends of each swing arm are connected with a push-pull mechanism;

the number of the push-pull mechanisms is two, the two push-pull mechanisms respectively comprise push blocks, fourth swing rods and second connecting arms, the second connecting arms are T-shaped, one ends, close to the two second connecting arms, penetrate through the corresponding first sliding positioning guide grooves through bolts to be hinged with the second swing rods, the far ends of the two second connecting arms penetrate through the corresponding first sliding positioning guide grooves through bolts to be hinged with the first swing rods and the third swing rods respectively, the other ends of the first swing rods and the third swing rods penetrate through the two third sliding positioning guide grooves through bolts to be hinged with the two ends of the first connecting arms respectively, one ends of the two fourth swing rods are arranged under the two mounting lugs respectively, the two push blocks are arranged under the avoidance long holes, one ends of the two push blocks penetrate through the two avoidance holes through bolts to be hinged with the two ends of the swing arms respectively, the other end of the push block is hinged with the center of the fourth swing rod through a bolt, the other end of the push block is hinged with the center of the fourth swing rod, the fourth swing rod is far away from one end of the mounting lug penetrates through the bolt, the second sliding positioning guide groove is hinged with the tail end of the second connecting arm, the center of the first swing rod, the second swing rod and the third swing rod penetrates through the bolt, the fourth guide hole is hinged with a spring bolt baffle, and the other end of the spring bolt baffle is provided with a limit baffle.

In a preferred embodiment of the present invention, the mounting plate is a hollow rectangular parallelepiped, the bottom surface of the mounting plate is open, and the top surface of the mounting plate and the bottom plate are fixedly connected by bolts.

As a preferable technical solution of the present invention, a second guide member is provided inside each of the four second guide long holes, and one end of the other end of the second guide member is fixedly connected to the bottom plate by a bolt, and a third guide member is provided inside the third guide long hole and fixedly connected to the top surface of the mounting plate by a bolt.

As a preferable technical scheme of the invention, the center of the swing arm is rotationally connected with the surface of the main push plate through a bolt.

As a preferable technical solution of the present invention, one end of each of the two fourth swing rods, which is close to the two mounting ears, is hinged to one end of each of the two extending ends by passing through the two fourth sliding positioning guide slots through a bolt.

As a preferred technical solution of the present invention, the limit baffle includes a fixing lug and a limit lug, the limit lug is disposed on the top surface of the fixing lug, the bottom surface of the first guide piece is fixedly connected to the top surface of the mounting plate through a bolt, one end of each of the three lock tongue baffles close to the limit baffle is disposed inside the fixing lug and close to one end thereof, the surface of one end of each of the lock tongue baffles close to the fixing lug is provided with a first guide slot, the positions of the bottom surfaces inside the fixing lug close to the two ends thereof are connected to the first guide piece through bolts, and the first guide piece close to one end of each of the lock tongue baffles passes through the first guide slot and is fixedly connected to the top surface of the mounting plate.

As a preferred technical scheme of the present invention, the surface of the mounting plate is provided with three locks, the three locks are respectively disposed on one side of the latch plate, one side of each of the three locks, which is close to the latch plate, is provided with a latch, and one end of the latch can extend to a position right above the latch plate.

As a preferred technical solution of the present invention, the length of the movable long groove is greater than or equal to the displacement length of the main push plate, a gear is disposed right above the movable long groove, the gear passes through the movable long groove and the bottom plate through a transmission shaft to be connected to a driving mechanism, a rack is disposed on one side of the gear, the rack is engaged with the gear, and the rack is fixedly mounted on the surface of the main push plate.

As a preferred technical solution of the present invention, the hinge holes at two ends of the first swing link, the hinge holes at two ends of the second swing link, the hinge holes at two ends of the third swing link, the hinge holes at two ends of the fourth swing link, and the hinge holes at two ends of the swing arm are all communicated with a sliding slot hole.

Compared with the prior art, the invention has the beneficial effects that: the swing arm is arranged on the main push plate, the push-pull mechanisms are hinged to two ends of the swing arm, three locks are arranged on the main push plate, a lock tongue baffle is arranged at the lock tongue of each lock in a sliding mode, a first swing rod, a second swing rod and a third swing rod are hinged to each lock tongue baffle respectively, one end, close to each first swing rod and the second swing rod, of each first swing rod is hinged to the push-pull mechanism, one end, close to each second swing rod and the third swing rod, of each second swing rod is hinged to the other push-pull mechanism, one end, far away from each second swing rod, of each first swing rod and one end, far away from each second swing rod, of each third swing rod are hinged to a first connecting arm, two ends of each first connecting arm extend towards the directions of the two push-pull mechanisms and are hinged together, the lock can be opened by two locks at will, the lock tongue is not stressed, the service life of the locks is guaranteed, misoperation of the main push plate can not occur, the use effect is improved, and the use safety and the use reliability are improved.

Drawings

Fig. 1 is a schematic plan structure view of a three-lock linkage structure provided in the present invention;

FIG. 2 is a schematic structural view of the main push plate of FIG. 1 with the main push plate removed;

FIG. 3 is a schematic view of the main push plate and the first connecting arm of FIG. 1;

FIG. 4 is a schematic view of the structure of FIG. 2 with one of the locks in an open position (illustrating the uppermost lock open);

FIG. 5 is a schematic illustration of the structure of FIG. 1 with one lock closed and the other two locks open (showing the uppermost and middle locks open and the lowermost lock closed);

FIG. 6 is a schematic illustration of the configuration of FIG. 1 with one lock closed and the other two locks open (illustrating the uppermost lock closed and the lowermost and middle locks open);

FIG. 7 is a schematic illustration of the structure of FIG. 1 with one of the locks closed and the other two locks open (showing the uppermost and lowermost locks open and the middle lock closed);

FIG. 8 is a schematic perspective view of a triple lock linkage structure according to the present invention;

fig. 9 is a schematic perspective view of the mounting body according to the present invention.

In the figure: 1. mounting the main body; 101. a first sliding positioning guide groove; 102. a second sliding positioning guide groove; 103. mounting a plate; 104. a base plate; 105. mounting lugs; 106. a third sliding positioning guide groove; 107. a fourth sliding positioning guide groove; 2. a main push plate; 202. avoiding the long hole; 203. a second guide long hole; 204. a second guide member; 205. a third guide long hole; 206. a third guide member; 207. a fourth guide long hole; 3. swinging arms; 4. a push-pull mechanism; 401. a push block; 402. a fourth swing link; 403. a second connecting arm; 5. locking; 501. a latch bolt; 6. a deadbolt guard; 601. a first guide long hole; 602. a first guide member; 7. a first swing link; 8. a second swing link; 9. a third swing link; 10. a first connecting arm; 1001. an extension end; 11. a rack; 12. a gear; 13. moving the long groove; 14. a limit baffle; 1401. fixing the ear; 1402. a limiting lug; 15. the long hole is slid.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Examples

Referring to fig. 1-9, the present invention provides a technical solution: a three-lock linkage structure comprises a mounting main body 1, a main push plate 2 and a push-pull mechanism 4.

Specifically, referring to fig. 1-9, the mounting body 1 includes a bottom plate 104 and a mounting plate 103, the mounting plate 103 is disposed on the surface of the bottom plate 104, the top surface of the mounting plate 103 is provided with mounting lugs 105 near both sides, both the mounting lugs 105 are fixedly connected to the top surface of the mounting plate 103, both the surfaces of both the mounting lugs 105 are provided with third sliding positioning guide slots 106 and fourth sliding positioning guide slots 107, the central axes of the third sliding positioning guide slots 106 and the fourth sliding positioning guide slots 107 are located on the same straight line, a first connecting arm 10 is disposed above both the third sliding positioning guide slots 106, both ends of the first connecting arm 10 are provided with extending ends 1001, the central axes of both the extending ends 1001 are perpendicular to the central axis of the first connecting arm 10 and are located on the same horizontal plane, the top surface of the mounting plate 103 is provided with first sliding positioning guide slots 101 and fourth guiding long holes 207 near the center, the number of the first sliding positioning guide grooves 101 and the number of the fourth guide long holes 207 are three, the number of the first sliding positioning guide grooves 101 in each group of the first sliding positioning guide grooves 101 and the fourth guide long holes 207 is two, the fourth guide long holes 207 are arranged between the two first sliding positioning guide grooves 101, the second sliding positioning guide grooves 102 are formed in the positions, close to one side, of the top surface of the mounting plate 103, and the number of the second sliding positioning guide grooves 102 is two;

the shape of the main push plate 2 is E-shaped, the surface of the main push plate 2 is provided with second guiding long holes 203 at positions close to two sides, the number of the second guiding long holes 203 is two, the middle part of the main push plate 2 is provided with a third guiding long hole 205 and a moving long groove 13, the surface of the middle part of the main push plate 2 is provided with avoidance long holes 202 at positions close to two sides of the main push plate 2, swing arms 3 are arranged above the two avoidance long holes 202, and two ends of each swing arm 3 are connected with push-pull mechanisms 4;

the number of the push-pull mechanisms 4 is two, each of the two push-pull mechanisms 4 comprises a push block 401, a fourth swing link 402 and a second connecting arm 403, the second connecting arm 403 is in a T shape, one end close to the two second connecting arms 403 passes through the corresponding first sliding positioning guide slot 101 through a bolt to be hinged with a second swing link 8, one end far away from the two second connecting arms 403 passes through the corresponding first sliding positioning guide slot 101 through a bolt to be hinged with a first swing link 7 and a third swing link 9, the other ends of the first swing link 7 and the third swing link 9 pass through the two third sliding positioning guide slots 106 through a bolt to be hinged with two ends of the first connecting arm 10, one ends of the two fourth swing links 402 are respectively arranged under the two mounting lugs 105, the two push blocks 401 are arranged under the avoidance long holes 202, one ends of the two push blocks 401 pass through the two avoidance long holes 202 through bolts to be hinged with two ends of the swing arm 3, the other ends of the two push blocks 401 are hinged to the centers of the two fourth swing rods 402 through bolts, the ends, far away from the mounting lugs 105, of the two fourth swing rods 402 penetrate through the two second sliding positioning guide grooves 102 through bolts to be hinged to the tail ends of the two second connecting arms 403, the centers of the first swing rod 7, the second swing rod 8 and the third swing rod 9 penetrate through corresponding fourth guide holes 207 through bolts to be hinged to the latch baffle 6, and the other ends of the three latch baffles 6 are provided with limit baffles 14.

In an embodiment of the present invention, the mounting plate 103 is shaped like a hollow rectangular parallelepiped, the bottom surface of the mounting plate 103 is open, and the top surface of the mounting plate 103 and the bottom plate 104 are fixedly connected by bolts.

As an embodiment of the present invention, further, a second guide 204 is provided inside each of the four second guide long holes 203, and one end of the other end of the second guide 204 is fixedly connected to the bottom plate 104 by a bolt, a third guide 206 is provided inside the third guide long hole 205, and the third guide 206 is fixedly connected to the top surface of the mounting plate 103 by a bolt.

As an embodiment of the present invention, further, the center of the swing arm 3 is rotatably connected to the surface of the main push plate 2 by a bolt.

As an embodiment of the present invention, further, one ends of the two fourth swing links 402 close to the two mounting ears 105 are hinged to one ends of the two extending ends 1001 through bolts passing through the two fourth slide positioning guide slots 107.

As an embodiment of the present invention, further, the limit baffle 14 includes a fixing ear 1401 and a limit ear 1402, the limit ear 1402 is disposed on a top surface of the fixing ear 1401, a bottom surface of the first guide 602 is fixedly connected to a top surface of the mounting plate 103 through a bolt, one end of the three latch baffles 6 near the limit baffle 14 is disposed inside the fixing ear 1401 near one end, a first long guide hole 601 is disposed on a surface of one end of the latch baffle 6 near the fixing ear 1401, the first guide 602 is connected to a bottom surface of the fixing ear 1401 near two ends through a bolt, and the first guide 602 near one end of the latch baffle 6 passes through the first long guide hole 601 and is fixedly connected to the top surface of the mounting plate 103.

As an embodiment of the present invention, further, the surface of the mounting plate 103 is provided with three locks 5, the three locks 5 are respectively disposed on one side of the deadbolt shutter 6, one side of each lock 5 close to the deadbolt shutter 6 is provided with a deadbolt 501, and one end of the deadbolt 501 can extend to a position right above the deadbolt shutter 6.

As an embodiment of the present invention, further, the length of the long moving groove 13 is greater than or equal to the displacement length of the main pushing plate 2, a gear 12 is disposed right above the long moving groove 13, the gear 12 passes through the long moving groove 13 through a transmission shaft and is connected to a bottom plate 104, a rack 11 is disposed on one side of the gear 12, the rack 11 and the gear 12 are engaged with each other, and the rack 11 is fixedly mounted on the surface of the main pushing plate 2.

As an embodiment of the present invention, further, the hinge holes at the two ends of the first swing link 7, the hinge holes at the two ends of the second swing link 8, the hinge holes at the two ends of the third swing link 9, the hinge holes at the two ends of the fourth swing link 402, and the hinge holes at the two ends of the swing arm 3 are all communicated with the sliding long hole 15.

Specifically, this three locking linkage structure's theory of operation: as shown in fig. 1 and fig. 2, when the three locks 5 are all in the closed state, because the latch plate 6 and the extended latch 501 are in the abutting state, the latch plate 6 cannot move, the first swing link 7, the second swing link 8 and the third swing link 9 cannot move, the corresponding push-pull mechanism 4 cannot move, and the main push plate 2 cannot move, that is: the unlocking of the lock cannot be realized.

As shown in fig. 4, when one of the locks 5 is in an open state (the uppermost lock is open, and the other two locks are closed in the figure), if the lock 5 in the open state and the corresponding strike plate 6 want to move, the first swing link 7 needs to be able to move, because the first swing link 7 connects the first connecting arm 10 and the second connecting arm 403 (the second connecting arm 403 connected with the first swing link 7 and the second swing link 8), if the first connecting arm 10 moves, the first swing link 7 and the third swing link 9 need to move simultaneously, because the lowermost strike 501 in the figure abuts against the corresponding strike plate 6, the third swing link 9 cannot move, and therefore, the first connecting arm 10 cannot move; if the second connecting arm 403 moves, it is necessary to move the first swing link 7 and the second swing link 8 simultaneously, and since the middle latch 501 in the figure abuts against the corresponding latch bolt 6, the second swing link 8 cannot move, and therefore, the second connecting arm 403 cannot move, that is: the first swing rod 7 cannot be moved, the main push plate 2 cannot be moved, and the lockset cannot be unlocked.

Similarly, when the lowest lock in the figure is opened and the other two locks are closed, the lock can not be opened.

When the intermediate lock is in an open state and the other two locks are in a closed state, if the bolt baffle 6 corresponding to the intermediate lock wants to move, the second swing rod 8 needs to move, the second swing rod 8 is connected with the two third connecting arms 403, and if the two third connecting arms 403 want to move, the first swing rod 7 and the third swing rod 9 need to move simultaneously, and because the bolt baffle 6 connected with the first swing rod 7 and the third swing rod 9 is respectively blocked by the bolt 501, the two third connecting arms 403 cannot move, the second swing rod 8 cannot move, the main push plate 2 cannot move, and the lock cannot be opened.

As shown in fig. 5, when two locks 5 are in an open state (the uppermost and middle locks are open, and the lowermost lock is closed in the figure), if the two opened locks 5 and their corresponding latch guards 6 need to move, the first swing link 7 and the second swing link 8 need to move simultaneously, and the ends of the first swing link 7 and the second swing link 8 that are close to each other are rotatably connected with the second connecting arm 403, so that when the driving mechanism drives the main push plate 2, the main push plate 2 will drive the push block 401 to move, the push block 401 will drive one end of the fourth swing link 402 (the end rotatably connected with the second connecting arm 403) to swing, and further drive the second connecting arm to move, the second connecting arm 403 will drive the first swing link 7 and the second swing link 8 to move, so as to realize the movement of the two latch guards 6 rotatably connected with the first swing link 7 and the second swing link 8, and at the same time, the main push plate 2 will also move synchronously, the lock can be unlocked.

Similarly, the lock may be unlocked when the top lock is closed and the bottom and middle locks are open (see fig. 6).

As shown in fig. 7, when the uppermost and lowermost locks are opened and the middle lock is closed, the first swing link 7 and the second swing link 9 are required to move simultaneously, since the first swing link 7 and the second swing link 9 are close to each other and both ends thereof are rotatably connected to a second connecting arm 403, and the other ends thereof are rotatably connected to a first connecting arm 10, when the driving mechanism drives the main push plate 2, the main push plate 2 will drive the push block 401 to move, the push block 401 will drive one end of the fourth swing link 402 (the end rotatably connected to the extending end 1001 of the first connecting arm 10) to swing, since the swing arm 3 is connected to the two push blocks 401, and the two fourth swing links 402 will be synchronously driven, and the two fourth swing links 402 will drive both ends of the first connecting arm 10 to move simultaneously, and further drive the ends of the first swing link 7 and the second swing link 9 rotatably connected to the first connecting arm 10 to move along the sliding positioning guide slot 101, and then drive two spring bolt baffles 6 and remove, simultaneously, main push pedal 2 also can synchronous motion, and this tool to lock can be opened.

When three locks 5 are in the open state, the corresponding three bolt baffles 6 can move, the main push plate 2 can also move synchronously, and the lock can be unlocked.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-lock linkage structure is characterized by comprising

The mounting structure comprises a mounting body (1), the mounting body (1) comprises a bottom plate (104) and a mounting plate (103), the mounting plate (103) is arranged on the surface of the bottom plate (104), mounting lugs (105) are arranged on the positions, close to two sides, of the top surface of the mounting plate (103), the two mounting lugs (105) are fixedly connected with the top surface of the mounting plate (103), third sliding positioning guide grooves (106) and fourth sliding positioning guide grooves (107) are formed in the surfaces of the two mounting lugs (105), the center shafts of the third sliding positioning guide grooves (106) and the fourth sliding positioning guide grooves (107) are located on the same straight line, a first connecting arm (10) is arranged above the two third sliding positioning guide grooves (106), extending ends (1001) are arranged at two ends of the first connecting arm (10), and the center shafts of the extending ends (1001) are perpendicular to the center shaft of the first connecting arm (10), the top surface of the mounting plate (103) is provided with first sliding positioning guide grooves (101) and fourth guiding long holes (207) close to the center, the number of the first sliding positioning guide grooves (101) and the number of the fourth guiding long holes (207) are three, the number of the first sliding positioning guide grooves (101) in each group of the first sliding positioning guide grooves (101) and the fourth guiding long holes (207) is two, the fourth guiding long holes (207) are arranged between the two first sliding positioning guide grooves (101), the top surface of the mounting plate (103) is provided with second sliding positioning guide grooves (102) close to one side, and the number of the second sliding positioning guide grooves (102) is two;

the main push plate (2) is E-shaped, second guide long holes (203) are formed in the surface of the main push plate (2) close to two sides, the number of the second guide long holes (203) is two, a third guide long hole (205) and a moving long groove (13) are formed in the middle of the main push plate (2), avoidance long holes (202) are formed in the surface of the middle of the main push plate (2) close to the two sides of the main push plate (2), swing arms (3) are arranged above the two avoidance long holes (202), and two ends of each swing arm (3) are connected with a push-pull mechanism (4);

the number of the push-pull mechanisms (4) is two, each of the two push-pull mechanisms (4) comprises a push block (401), a fourth swing rod (402) and a second connecting arm (403), each of the second connecting arms (403) is T-shaped, one end, close to each other, of each of the two second connecting arms (403) penetrates through the corresponding first sliding positioning guide slot (101) through a bolt to be hinged with a second swing rod (8), the other end, far away from each other, of each of the two second connecting arms (403) penetrates through the corresponding first sliding positioning guide slot (101) through a bolt to be hinged with a first swing rod (7) and a third swing rod (9), the other ends of the first swing rod (7) and the third swing rod (9) penetrate through the two third sliding positioning guide slots (106) through bolts to be hinged with the two ends of the first connecting arm (10) mutually, one ends of the two fourth swing rods (402) are arranged under the two mounting lugs (105) respectively, the two push blocks (401) are arranged under the avoidance long holes (202), one ends of the two push blocks (401) penetrate through the two avoidance long holes (202) through bolts respectively and are hinged with two ends of the swing arm (3), the other ends of the two push blocks (401) are hinged with the centers of the two fourth swing rods (402) through bolts respectively, one ends, far away from the mounting lugs (105), of the two fourth swing rods (402) penetrate through the two second sliding positioning guide grooves (102) through bolts respectively and are hinged with the tail ends of the two second connecting arms (403), the centers of the first swing rod (7), the second swing rod (8) and the third swing rod (9) penetrate through the corresponding fourth guide holes (207) through bolts to be hinged with bolt baffles (6), and the other ends of the three bolt baffles (6) are provided with limit baffles (14).

2. A three-lock linkage structure according to claim 1, wherein the mounting plate (103) is hollow and rectangular parallelepiped, the bottom surface of the mounting plate (103) is open, and the top surface of the inside of the mounting plate (103) is fixedly connected to the bottom plate (104) by bolts.

3. A three-lock linkage structure according to claim 1, wherein a second guide member (204) is provided inside each of four second guide long holes (203), and one end of the other end of the second guide member (204) is fixedly connected to the bottom plate (104) by a bolt, a third guide member (206) is provided inside the third guide long hole (205), and the third guide member (206) is fixedly connected to the top surface of the mounting plate (103) by a bolt.

4. A triple lock linkage according to claim 1, wherein the swing arm (3) is rotatably connected at its center to the surface of the main push plate (2) by means of a bolt.

5. A triple lock linkage according to claim 1, wherein one ends of the two fourth swing links (402) respectively adjacent to the two mounting lugs (105) are each hinged to one end of the two extension ends (1001) respectively by means of a bolt passing through the two fourth slide positioning guide grooves (107).

6. A triple lock linkage according to claim 1, wherein the limit stop (14) comprises a fixing lug (1401) and a limit lug (1402), the limit lug (1402) is arranged on the top surface of the fixed lug (1401), the bottom surface of the first guide piece (602) is fixedly connected with the top surface of the mounting plate (103) through a bolt, one end of the three bolt baffles (6) close to the limit baffle (14) is arranged inside the fixed lug (1401) close to one end, a first guiding long hole (601) is arranged on the surface of one end of the bolt baffle (6) close to the fixing lug (1401), a first guide piece (602) is connected to the inner bottom surface of the fixing lug (1401) near two ends through bolts, and the first guide piece (602) close to one end of the bolt baffle (6) penetrates through the first guide long hole (601) to be fixedly connected with the top surface of the mounting plate (103).

7. A three-lock linkage structure according to claim 1, wherein the surface of the mounting plate (103) is provided with three locks (5), the number of the locks (5) is three, the three locks (5) are respectively arranged on one side of the latch closure (6), the three locks (5) are provided with a latch (501) on the side close to the latch closure (6), and one end of the latch (501) can extend to the position right above the latch closure (6).

8. A three-lock linkage structure according to claim 1, wherein the length of the movable long groove (13) is greater than or equal to the displacement length of the main push plate (2), a gear (12) is arranged right above the movable long groove (13), the gear (12) passes through the movable long groove (13) through a transmission shaft and is connected with a driving mechanism through the bottom plate (104), a rack (11) is arranged on one side of the gear (12), the rack (11) and the gear (12) are engaged with each other, and the rack (11) is fixedly mounted on the surface of the main push plate (2).

9. A three-lock linkage structure according to claim 1, wherein the hinge holes at the two ends of the first swing link (7), the hinge holes at the two ends of the second swing link (8), the hinge holes at the two ends of the third swing link (9), the hinge holes at the two ends of the fourth swing link (402) and the hinge holes at the two ends of the swing arm (3) are all communicated with a sliding long hole (15).