CN212428547U - Anti-theft floor lock for rolling door - Google Patents

Abstract

The utility model discloses a rolling slats door theftproof lock that falls to ground, its characterized in that: the lock comprises a lock body, a lock cylinder, a tension spring, a stroke transmission mechanism, a locking mechanism and an anti-back-shifting mechanism; the lock core sets up the middle part at the lock body, stroke drive mechanism includes locking lever, first transmission locking lever and second transmission locking lever, the locking lever includes tooth locking lever and lower tooth locking lever, goes up tooth locking lever and sets up respectively on lock core upper portion and lower part and mesh mutually with lock core gear down the tooth locking lever, the locking lever is connected with the one end of first transmission locking lever, second transmission locking lever is connected with the other end of first transmission locking lever, prevent that the mechanism that dials back sets up in one side of locking lever and first transmission locking lever junction. The utility model discloses rolling slats door theftproof falls to ground the lock suitability strong, pick-proof performance is excellent, convenient to use, fault rate are low, make things convenient for dismouting and maintenance.

Description

Anti-theft floor lock for rolling door

Technical Field

The utility model relates to a pick-proof lock technical field, especially a theftproof lock that falls to ground that is used for rolling slats door specially.

Background

Rolling doors, also known as "tambour doors", are doors that rotate up and down in fixed slides about a roller above the door, with a number of articulated flaps connected in series or in other combinations. The rolling gate is suitable for public places or houses such as commercial door surfaces, garages, markets, hospitals, factories and mining enterprises and the like. The rolling gate, especially the door opening is bigger, and the place inconvenient for installing the ground door body can be conveniently and quickly opened. Such as garage doors, fire-proof rolling doors for stores, aircraft garage doors.

The current commercial electric rolling gate has no locking device, uses motor as driving switch to lock the rolling gate, and the structure of the gate is that each grid of door sheets are connected in series. When the rolling door needs to be locked, only the motor needs to be started to enable the multi-joint door curtain sheet to descend along the slide way, and the motor is turned off after the bottom sheet is contacted with the ground. However, when the rolling door is in a locked state, a certain gap is usually formed between the film and the ground, and at this time, even if the motor is not started, the rolling door can be lifted or pried up by applying enough external force to the rolling door through the gap by using necessary tools, so that the multi-joint door curtain sheet rotates around the scroll to achieve the purpose of opening the rolling door, and the safety performance of the rolling door is reduced.

With regard to the anti-theft floor lock for roller shutters, we have searched the following documents:

chinese patent, name: the single-hook anti-picking automatic lock for rolling door is disclosed in patent No. 201120158117.4, abstract: the utility model relates to a shutter door single-hook pick-proof automatic lock, it includes: the device comprises a hinge shaft, a positioning shaft, a left rack, a right rack, an eccentric gear, a driving wheel, a half gear, a clockwork spring, a half gear shaft, a trigger piece and a safety sheet; the eccentric gear is characterized in that a stop column is arranged on the outer side of an eccentric ring, and a gear is arranged on the inner side of the eccentric ring; one end of the left rack and one end of the right rack are meshed with a gear on the inner side of the eccentric gear, and the guide plate, the latch hook sleeved in the eccentric ring of the eccentric gear and the middle section of the safety disc are sequentially positioned below the bottom of the shell by using a latch hook shaft; the half gear of the superposed clockwork spring is positioned at two sides of the bottom of the shell by a half gear shaft, and the other ends of the left rack and the right rack are downwards respectively meshed with the half gear; the lower end of the safety plate is connected with a positioning shaft at the bottom of the shell through a spring; the middle of the trigger is fixed below the left rack at the bottom of the shell by a positioning shaft, the upper end of a trigger piece sleeved into the bottom of the shell is hinged with the left end of the trigger, and a notch at the right end of the trigger can clamp and release a convex shoulder of the left rack. However, the single hook is adopted for locking, so that when the rolling gate is used for locking the door downwards, the failure is easy to occur, and the anti-prying performance is poor.

Disclosure of Invention

The utility model aims at the problems in the prior art, and provides a rolling door anti-theft landing lock which has strong applicability, excellent anti-prying performance, convenient use, low failure rate and convenient disassembly, assembly and maintenance, and is suitable for various manual and electric rolling doors, industrial doors, lifting doors and the like which vertically run; it is also suitable for manual and electric sliding doors, telescopic doors and the like in horizontal left and right operation.

The technical scheme of the utility model is realized like this:

the utility model provides a rolling slats door theftproof lock that falls to ground which characterized in that: the lock comprises a lock body, a lock cylinder, a tension spring, a stroke transmission mechanism, a locking mechanism and an anti-back-shifting mechanism; the lock cylinder is arranged in the middle of the lock body, the stroke transmission mechanism comprises a lock rod, a first transmission lock rod and a second transmission lock rod, the lock rod comprises an upper tooth lock rod and a lower tooth lock rod, the upper tooth lock rod and the lower tooth lock rod are respectively arranged on the upper part and the lower part of the lock cylinder and are meshed with the lock cylinder gear, the lock rod is connected with one end of the first transmission lock rod, the second transmission lock rod is connected with the other end of the first transmission lock rod, and the anti-reverse-stirring mechanism is arranged on one side of the connection position of the lock rod and the first transmission lock rod;

the locking mechanism is arranged in the lock groove and comprises a trigger, a coupling type toothed hook, a trigger pin, a first reset spring and a second reset spring, the trigger is arranged below the second transmission lock rod, the coupling type toothed hook is arranged below the trigger and comprises a first lock hook and a second lock hook, the trigger is connected with the first lock hook through the second reset spring, and the first lock hook is connected with the second lock hook through the first reset spring; one end of the trigger pin is movably connected with the second lock hook, a first torsion spring is arranged at the movable connection position of the trigger pin and the second lock hook, one end of the first torsion spring extends to the connecting column of the trigger pin, and the other end of the first torsion spring extends to the connecting column of the second lock hook;

one end of the tension spring is connected with the lock body, and the other end of the tension spring is connected with the second transmission lock rod.

Preferably, one end of the trigger is of a circular arc-shaped structure, the other end of the trigger is of an irregular L-shaped bayonet, racks which are meshed with each other are arranged on the upper portions of the first locking hook and the second locking hook, semicircular rings are arranged on the lower portions of the first locking hook and the second locking hook, and locking teeth which are meshed with the second locking hook are arranged at the bottom of the first locking hook.

Further preferably, the anti-reverse-dialing mechanism is movably connected with the lock body at the bottom, a second torsion spring is arranged at the joint of the anti-reverse-dialing mechanism and the lock body, an irregular L-shaped anti-reverse-dialing sliding groove is formed in the anti-reverse-dialing mechanism, and an anti-reverse-dialing hook is arranged at the lower part of the anti-reverse-dialing mechanism.

Further preferably, a second lock rod sliding groove and a third lock rod sliding groove are formed in the first transmission lock rod, a second limiting block and a third limiting block are arranged on the lock body, a first limiting block is arranged at one end of the lock rod and installed in the third lock rod sliding groove, and the second lock rod sliding groove is installed on the second limiting block.

Further preferably, the second transmission locking rod is provided with a first locking rod sliding groove, the lock body is provided with a third limiting block, the first locking rod sliding groove is installed on the third limiting block, and the lower portion of the second transmission locking rod is provided with a movable groove matched with the trigger during working.

Further preferably, second latch hook upper portion is equipped with the stopper, trigger round pin top is equipped with spacing mouthful, the upper portion of trigger one end is equipped with the bayonet socket, and the below of bayonet socket is equipped with the bail.

Preferably, the lock body is further provided with a buckle, one side of the movable groove is provided with a latch matched with the trigger, and the lower part of the second transmission lock rod is further provided with a clamping rod matched with the buckle.

Further preferably, the lock body is further provided with a positioning elastic sheet.

Further preferably, the lock groove is of a trapezoidal structure, and a trapezoidal opening is formed in the lock groove.

Further preferably, the stroke transmission mechanism further comprises a connecting rod and an extension rod, one end of the connecting rod is connected with the second transmission locking rod, the other end of the connecting rod is connected with the extension rod, and the tail end of the extension rod is provided with a roller.

The utility model discloses still need to cooperate ground hook box to use, couple mode cusp ground is colluded the lock and is aimed at the lock axle closure on the ground hook box when closing the lock, accomplishes the lock door.

The anti-theft floor lock for the rolling door of the utility model is not only used for an electric rolling door, but also used for a manual rolling door; the two ends of the anti-theft floor lock for the rolling door can also be provided with lock rods which are inserted into door frame slideways of the rolling door, so that the anti-prying function is enhanced, the anti-prying floor lock is used for an ultra-wide rolling door, and the lock rods can be lengthened on the two sides to prevent burglary.

The utility model discloses can adopt two kinds of mechanical outage modes: the lock rod drives the roller to touch the travel switch or the lock rod drives the approach switch (touch switch).

Compared with the prior art, the beneficial effects of the utility model are that:

1. the anti-theft floor lock for the rolling door can prevent thieves from picking the lock from the back of the door by arranging the double lock hooks and the anti-return mechanism, and has good safety and excellent anti-prying performance; the floor anti-picking lock disclosed by the invention has the advantages that the coupling type toothed hook is synchronously and automatically locked only after the rolling door is closed, the synchronous door closing and locking are realized, a key is not needed for closing the lock, the lock is convenient and quick, the roller touches the travel switch or senses the approach switch during closing the lock, the power supply of the motor is automatically cut off, and the remote control number of the motor is effectively prevented from being copied; the anti-reverse mechanism cannot be pried by manpower, can prevent lawless persons from lifting up or prying up the roller shutter door through a door gap, and has excellent anti-prying performance; the whole lockset adopts a mechanical structure, so that the problem that electronic components are easy to damage is avoided, the service life is long, the disassembly, the assembly and the maintenance are convenient, and the damaged parts can be replaced by only opening the lock body; the anti-theft landing lock for the rolling door is suitable for being installed on various electric rolling doors, only needs to be installed on the bottom beam of the rolling door, and is high in applicability. After the rolling door is locked, the safety catch can be arranged indoors through the back locking mechanism, and the rolling door cannot be opened outdoors by using a key, so that the safety is enhanced.

2. The anti-theft floor lock for the roller shutter door can realize the automatic locking function when the door is closed by one operation by clockwise twisting the key to the end and then reversing (anticlockwise) the key to the original starting position, and does not need to twist the key for the second time to achieve the complex design of automatic locking; if the twist key can not reach the position, the coupling type toothed hook is not opened, the motor can not be electrified, the rolling door can not be started, misoperation is avoided, the motor is damaged when the coupling type toothed hook is not opened, wired electrification for unlocking the rolling door motor can be realized through mechanical triggering, wired outage for locking is realized, and the wire electrification is not interfered by wireless signals, and the wire electrification device is safe and reliable.

Drawings

Fig. 1 is a schematic view of the anti-theft floor lock of the rolling door of the present invention.

Fig. 2 is a schematic view of the anti-theft floor lock of the rolling door according to the present invention.

Fig. 3 is a first schematic structural view of the anti-theft floor lock of the rolling door of the present invention in a closed state.

Fig. 4 is a schematic structural diagram of the closed state of the anti-theft floor lock of the rolling door of the present invention.

Fig. 5 is a schematic view of the structure of the locking mechanism.

Fig. 6 is a schematic view of the structure of the trigger 8.

Fig. 7 is a schematic view of the structure of the trigger pin 11.

Fig. 8 is a schematic structural view of the second transmission lock lever 5.

Fig. 9 is a schematic structural view of the first transmission lock lever 4.

Fig. 10 is a schematic structural view of the anti-reverse mechanism 19.

Fig. 11 is a schematic perspective view of the anti-reverse mechanism 19.

Fig. 12 is an enlarged schematic view of the connecting rod 30 and the extension rod 31.

Part name and sequence number in the figure:

the lock body 1, the lock core 2, the lock rod 3, the first transmission lock rod 4, the second transmission lock rod 5, the lock groove 6, the extension spring 7, the trigger 8, the first lock hook 9, the second lock hook 10, the trigger pin 11, the first reset spring 12, the second reset spring 13, the first torsion spring 14, the limiting block 15, the limiting opening 16, the bayonet 17, the staple 18, the anti-reverse mechanism 19, the first lock rod chute 20, the movable groove 21, the latch 22, the clamping rod 23, the buckle 24, the second lock rod chute 25, the third lock rod chute 26, the anti-reverse chute 27, the anti-reverse hook 28, the second torsion spring 29, the connecting rod 30, the extension rod 31, the roller 32, the first limiting block 33, the second limiting block 34, the third limiting block 35, and the positioning elastic sheet 36.

Detailed Description

Example 1

As shown in fig. 1-4, the anti-theft floor lock for the rolling door of the utility model comprises a lock body 1, a lock cylinder 2, a tension spring 7, a stroke transmission mechanism, a locking mechanism and an anti-return mechanism 19; the lock cylinder 2 is arranged in the middle of the lock body 1, the stroke transmission mechanism comprises a lock rod 3, a first transmission lock rod 4 and a second transmission lock rod 5, the lock rod 3 comprises an upper tooth lock rod and a lower tooth lock rod, the upper tooth lock rod and the lower tooth lock rod are respectively arranged on the upper part and the lower part of the lock cylinder 2 and are meshed with the gear of the lock cylinder 2, the lock rod 3 is connected with one end of the first transmission lock rod 4, the second transmission lock rod 5 is connected with the other end of the first transmission lock rod 4, and the anti-reverse-poking mechanism 19 is arranged on one side of the joint of the lock rod 3 and the first transmission lock rod 4;

as shown in fig. 5, the lower portions of the two ends of the lock body 1 are provided with lock grooves 6, the locking mechanism is arranged in the lock grooves 6, the locking mechanism comprises a trigger 8, a coupling type toothed hook, a trigger pin 11, a first return spring 12 and a second return spring 13, the trigger 8 is arranged below the second transmission lock rod 5, the coupling type toothed hook is arranged below the trigger 8, the coupling type toothed hook comprises a first lock hook 9 and a second lock hook 10, the trigger 8 is connected with the first lock hook 9 through the second return spring 13, and the first lock hook 9 is connected with the second lock hook 10 through the first return spring 12; one end of the trigger pin 11 is movably connected with the second locking hook 10, a first torsion spring 14 is arranged at the movable connection position of the trigger pin 11 and the second locking hook 10, one end of the first torsion spring 14 extends to a connection column of the trigger pin 11, and the other end of the first torsion spring 14 extends to a connection column of the second locking hook 10;

one end of the tension spring 7 is connected with the lock body 1, and the other end of the tension spring 7 is connected with the second transmission lock rod 5.

As shown in fig. 6, one end of the trigger 8 is in a circular arc structure, the other end of the trigger 8 is in an irregular L-shaped bayonet 17, racks which are meshed with each other are arranged on the upper portions of the first lock hook 9 and the second lock hook 10, semicircular rings are arranged on the lower portions of the first lock hook 9 and the second lock hook 10, and lock teeth which are meshed with the second lock hook 10 are arranged at the bottom of the first lock hook 9.

As shown in fig. 10-11, the anti-reverse mechanism 19, the bottom of the anti-reverse mechanism 19 is movably connected to the lock body 1, a second torsion spring 29 is disposed at a joint of the anti-reverse mechanism 19 and the lock body 1, an irregular L-shaped anti-reverse sliding groove 27 is disposed on the anti-reverse mechanism 19, and an anti-reverse hook 28 is disposed at a lower portion of the anti-reverse mechanism 19.

As shown in fig. 9, the first transmission locking rod 4 is provided with a second locking rod sliding groove 25 and a third locking rod sliding groove 26, the lock body 1 is provided with a second limiting block 34 and a third limiting block 35, one end of the locking rod 3 is provided with a first limiting block 33, the first limiting block 33 is installed in the third locking rod sliding groove 26, and the second locking rod sliding groove 25 is installed on the second limiting block 34.

As shown in fig. 8, the second transmission locking rod 5 is provided with a first locking rod sliding groove 20, the lock body 1 is provided with a third limiting block 35, the first locking rod sliding groove 20 is installed on the third limiting block 35, and the lower portion of the second transmission locking rod 5 is provided with a movable groove 21 matched with the trigger 8 during operation.

As shown in fig. 7, a limiting block 15 is arranged at the upper part of the second locking hook 10, a limiting opening 16 is arranged at the top of the trigger pin 11, a bayonet 17 is arranged at the upper part of one end of the trigger 8, and a staple 18 is arranged below the bayonet 17.

The lock body 1 is further provided with a buckle 24, one side of the movable groove 21 is provided with a latch 22 matched with the trigger 8, and the lower part of the second transmission lock rod 5 is further provided with a clamping rod 23 matched with the buckle 24.

The lock body 1 is also provided with a positioning elastic sheet 36, the tension spring 7 is arranged, the lock rod is driven to have outward spring tension when the key is turned, and the positioning elastic sheet 36 is meshed with the rack on the lock rod 3, so that the tension force can be reduced, and the key can be conveniently turned.

The locking groove 6 is of a trapezoidal structure, and a trapezoidal opening is formed in the locking groove 6.

As shown in fig. 12, the stroke transmission mechanism further includes a connecting rod 30 and an extension rod 31, one end of the connecting rod 30 is connected to the second transmission locking rod 5, the other end of the connecting rod 30 is connected to the extension rod 31, and a roller 32 is disposed at the end of the extension rod 31.

The embodiment of the utility model provides a working process as follows: the utility model discloses a rolling slats door theftproof falls to ground the lock and installs on the floorbar of electronic shutter door, when needs close the shutter door, open the hook box lid, the remote control starts electronic drive shutter door and falls down, coupling type dentate colludes this moment and appears the state of opening under first reset spring 12 and second reset spring 13's effect, when the shutter door removes the ground hook box, the second latch hook 10 is withstood to the lock axle of ground hook box, second latch hook 10 moves up this moment, drive first latch hook 9 and rotate, second latch hook 10 drives trigger pin 11 through first torsional spring 14 and moves backward, trigger pin 11 drives trigger 8 and moves forward, the L font kayser of trigger 8 separates with the activity recess 21 of second transmission locking lever 5, first latch hook 9 and second latch hook 10 are the closure state this moment, realize the closing of theftproof ground lock.

When automatic lock, extension spring 7 drives first transmission locking lever 4 and the removal of second transmission locking lever 5, and the removal of second transmission locking lever 5 drives connecting rod 30 and extension rod 31 and pops out each 40 millimeters strokes to shutter door both sides automatically, and extension rod 31 (door groove limit) when extending to the door both sides use (travel switch and proximity switch) two kinds of modes to trigger shutter door motor controller and send out the automatic report: the motor is powered off and the lock is closed.

In addition, the anti-reverse mechanism 19 moves upwards under the action of the second torsion spring 29, when external force acts on the first transmission lock rod 4, the first transmission lock rod 4 is pried by the external force to move back, and then the anti-reverse hook 28 is pressed against the first transmission lock rod, so that the anti-reverse function is realized.

When needs are unblanked, insert the key and unblank, unblank custom (clockwise) according to at ordinary times and twist reverse the key to the end, through setting up kelly 23 and buckle 24, just turn round the unmovable key when the kelly 23 in the second transmission locking lever 5 withstands buckle 24, nevertheless can not dial the key, need reversal (anticlockwise) key to former starting position, just can dial the key, controller automatic broadcast this moment: the motor is energized and the lock is unlocked. Then, the key is immediately reversed to reset, and preparation is made for the automatic locking function when the door is closed; if the torsion key can not reach the position, the ground hook is not opened, the motor can not be electrified, the shutter door can not be started, and misoperation can be avoided, wherein the motor damages the shutter door by pulling. 2 wrench keys of lock core drive locking lever 3 and move inwards, locking lever 3 drives prevents that the mechanism 19 of dialling moves inwards, the function of preventing dialling back has been relieved, locking lever 3 drives first transmission locking lever 4 and second transmission locking lever 5 and moves inwards, trigger 8 gets into the movable recess 29 of second transmission locking lever 5, the L font kayser card of trigger 8 is in activity recess 21, trigger 8 drives trigger pin 11 and moves, trigger pin 11 drives first latch hook 9 and second latch hook 10 and opens to both sides, realize unblanking, at last manual or remote control start electronic shutter door and open.

When the electric shutter door needs to be closed for multiple times, the landing lock is not closed, the buckle is released for 24 limitation, the key is turned to 6 o' clock and then is pulled out (without rotary reset), the landing lock is not closed when the door is closed, and the electric shutter door is suitable for frequent access of vehicles in daytime.

It is understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should understand that they can make various changes, modifications, additions and substitutions within the spirit and scope of the present invention.

Claims (10)

1. The utility model provides a rolling slats door theftproof lock that falls to ground which characterized in that: comprises a lock body (1), a lock cylinder (2), a tension spring (7), a stroke transmission mechanism, a locking mechanism and an anti-back-shifting mechanism (19); the lock cylinder (2) is arranged in the middle of the lock body (1), the stroke transmission mechanism comprises a lock rod (3), a first transmission lock rod (4) and a second transmission lock rod (5), the lock rod (3) comprises an upper tooth lock rod and a lower tooth lock rod, the upper tooth lock rod and the lower tooth lock rod are respectively arranged on the upper portion and the lower portion of the lock cylinder (2) and are meshed with a gear of the lock cylinder (2), the lock rod (3) is connected with one end of the first transmission lock rod (4), the second transmission lock rod (5) is connected with the other end of the first transmission lock rod (4), and the anti-reverse-poking mechanism (19) is arranged on one side of the connection position of the lock rod (3) and the first transmission lock rod (4);

the lock comprises a lock body (1), a locking groove (6) is formed in the lower portions of two ends of the lock body (1), the locking mechanism is arranged in the locking groove (6), the locking mechanism comprises a trigger (8), a coupling type toothed hook, a trigger pin (11), a first reset spring (12) and a second reset spring (13), the trigger (8) is arranged below a second transmission locking rod (5), the coupling type toothed hook is arranged below the trigger (8), the coupling type toothed hook comprises a first locking hook (9) and a second locking hook (10), the trigger (8) is connected with the first locking hook (9) through the second reset spring (13), and the first locking hook (9) is connected with the second locking hook (10) through the first reset spring (12); one end of the trigger pin (11) is movably connected with the second locking hook (10), a first torsion spring (14) is arranged at the movable connection position of the trigger pin (11) and the second locking hook (10), one end of the first torsion spring (14) extends to a connecting column of the trigger pin (11), and the other end of the first torsion spring (14) extends to a connecting column of the second locking hook (10);

one end of the tension spring (7) is connected with the lock body (1), and the other end of the tension spring (7) is connected with the second transmission lock rod (5).

2. The anti-theft floor lock for a roller door according to claim l, wherein: trigger (8) one end is convex structure, and trigger (8) other end is irregular L font bayonet socket (17), the upper portion of first latch hook (9) and second latch hook (10) all is equipped with intermeshing's rack, and the lower part of first latch hook (9) and second latch hook (10) all is equipped with the semicircle ring, the bottom of first latch hook (9) is equipped with the lock tooth with second latch hook (10) intermeshing.

3. The anti-theft floor lock for a roller door according to claim l, wherein: prevent dialling back mechanism (19), the bottom and lock body (1) swing joint of preventing dialling back mechanism (19), it is equipped with second torsional spring (29) to prevent dialling back mechanism (19) and lock body (1) junction, prevent being equipped with on the mechanism (19) of dialling back and prevent dialling back spout (27) irregularly L font, the lower part of preventing the mechanism (19) of dialling back is equipped with prevents dialling back and colludes (28).

4. The anti-theft floor lock for a roller door according to claim l, wherein: be equipped with second locking lever spout (25) and third locking lever spout (26) on first transmission locking lever (4), be equipped with second stopper (34) and third stopper (35) on lock body (1), the one end of locking lever (3) is equipped with first stopper (33), and first stopper (33) are installed in third locking lever spout (26), second locking lever spout (25) are installed on second stopper (34).

5. The anti-theft floor lock for a roller door according to claim 1, wherein: be equipped with first locking lever spout (20) on second transmission locking lever (5), be equipped with third stopper (35) on lock body (1), first locking lever spout (20) are installed on third stopper (35), and the lower part of second transmission locking lever (5) is equipped with movable recess (21) with trigger (8) during operation complex.

6. The anti-theft floor lock for a roller door according to claim 1, wherein: the second latch hook (10) upper portion is equipped with stopper (15), trigger round pin (11) top is equipped with spacing mouth (16), the upper portion of trigger (8) one end is equipped with bayonet socket (17), and the below of bayonet socket (17) is equipped with bail (18).

7. The anti-theft floor lock for a roller door according to claim 5, wherein: the lock body (1) is further provided with a buckle (24), one side of the movable groove (21) is provided with a latch (22) matched with the trigger (8), and the lower part of the second transmission lock rod (5) is further provided with a clamping rod (23) matched with the buckle (24).

8. The anti-theft floor lock for a roller door according to claim 1, wherein: the lock body (1) is also provided with a positioning elastic sheet (36).

9. The anti-theft floor lock for a roller door according to claim 1, wherein: the lock groove (6) is of a trapezoidal structure, and a trapezoidal opening is formed in the lock groove (6).

10. The anti-theft floor lock for a roller door according to claim 1, wherein: the stroke transmission mechanism further comprises a connecting rod (30) and an extension rod (31), one end of the connecting rod (30) is connected with the second transmission locking rod (5), the other end of the connecting rod (30) is connected with the extension rod (31), and the tail end of the extension rod (31) is provided with a roller (32).

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