CN216841044U - Anti-theft mechanical manhole cover lock - Google Patents

Abstract

The utility model provides an theftproof machinery well lid lock, is including installing the well lid lock body on the well lid, and well lid lock body includes the lock body, connect many connecting rods that the angle was arranged such as on the lock body, the terminal swing joint of many connecting rods have the set bar, be equipped with the support on the set bar, the support is fixed on the well lid, and the centre of support is equipped with the round hole, is used for supporting the set bar, set bar can remove in the round hole during switch lock, the lock body is unblanked through mechanical key. By utilizing the utility model, the well cover can be ensured to have higher theft-proof performance; rainwater and silt can not pile up inside the lock, have avoided leading to the lock to appear the trouble because of rainwater corruption or silt jam.

Description

Anti-theft mechanical manhole cover lock

Technical Field

The utility model relates to a well lid lock, concretely relates to theftproof machinery well lid lock.

Background

At present, the common mechanical manhole cover lock is mainly a manhole cover lock with a key, the shape of a key interface is simpler, the anti-theft performance is not too much, the safety level is lower, and the mechanical manhole cover lock can be opened by using a common tool.

Similarly, because the installation environment of the manhole cover lock is severe, the manhole cover lock works in the environment with various chemical components such as rainwater or sludge for a long time, and the lockhole of the common mechanical manhole cover lock is a blind hole, so that the manhole cover lock is easy to block or rust due to accumulated water, and the manhole cover lock cannot be unlocked.

For the reasons, the common mechanical manhole cover lock cannot meet the requirements of high theft resistance and severe installation environment.

Disclosure of Invention

The utility model aims to solve the technical problem that, overcome prior art not enough, provide a theftproof machinery manhole cover lock that theftproof nature is high, can adapt to abominable installation environment.

The utility model provides a technical scheme that its technical problem adopted is, a theftproof machinery well lid lock, including installing the well lid lock body on the well lid, its characterized in that: the well lid lock body comprises a lock body, a plurality of connecting rods which are arranged at equal angles are connected to the lock body, the tail ends of the connecting rods are movably connected with lock bolts, supports are arranged on the lock bolts, the supports are fixed on the well lid, round holes are formed in the middles of the supports and used for supporting the lock bolts, the lock bolts can move in the round holes when the well lid is opened and closed, and the lock body is unlocked through a mechanical key.

Further, the lock body comprises a shell, a locking plate set, an unlocking shifting plate, a lock fixing blade, a movable shaft baffle, an unlocking turntable and a waterproof rubber plug;

the lock is characterized in that the outer shell is in a flange shaft shape, a cavity which is communicated up and down is arranged in the center of the outer shell, a flange is arranged at the upper end of the cavity, the cavity is used for placing a locking plate assembly, an unlocking shifting plate, a locking fixed blade and a movable shaft, the flange is used for limiting a component arranged in the cavity to move upwards, and a key guide groove is formed in the flange; the lock plate assembly is a plurality of hollow circular thin plates, a lock plate key groove is formed in the circumference of the middle hole and used for being matched with a boss on the outer circumference of the key plate assembly to unlock, and lock plate unlocking grooves are formed in the circumference of the outer circumference at different angles and used for being matched with a bolt to unlock;

the locking plate assembly is characterized in that circular arc-shaped locking plate positioning grooves are uniformly formed in the outer circle circumference of the locking plate assembly, and the locking plate assembly is matched with the locking plate assembly through a cylindrical pin and a positioning wave bead to prevent dislocation of the locking plate assembly when the locking plate assembly is vibrated;

the lock plate set and the plurality of lock fixing blades are arranged in the cavity in a staggered mode, are coaxial with the shell and can freely rotate in the shell;

the outer circumference of the lock fixing blade is provided with a boss which is matched with a corresponding groove on the shell to prevent the lock fixing blade from rotating, and the inner circumference of the lock fixing blade is provided with a lock fixing blade key slot;

the outer circumference of the unlocking plectrum is provided with an unlocking plectrum unlocking groove which is arranged at the same angle with an unlocking plectrum key groove arranged in the inner hole, two side edges of the unlocking plectrum unlocking groove are oblique angles, a bolt firstly enters the unlocking plectrum unlocking groove during unlocking, and the bolt firstly leaves the unlocking plectrum unlocking groove during locking;

the unlocking shifting piece is placed at the rearmost end of the locking piece set, an L-shaped groove is formed in the outer circumference of the movable shaft and used for placing a bolt, a torsion spring is arranged at the bottom of the bolt and used for resetting the bolt, the movable shaft is installed at the lowermost layer in the shell, one end of the bolt is movably connected to the movable shaft under the action of the torsion spring during locking, the other end of the bolt enters the locking groove of the shell, and the movable shaft and the shell are locked;

the movable shaft baffle is fixedly connected with the shell, and the locking plate assembly, the unlocking shifting plate, the lock fixing blade and the movable shaft are limited in the shell to prevent axial movement.

The waterproof rubber plug is installed between the upper end of the lock body and the well lid, and rainwater is prevented from entering the interior of the lock.

Furthermore, the lock bolt is of a cylindrical structure, one end of the lock bolt is provided with a threaded hole, and the lock bolt is movably connected with the connecting rod through a step screw.

Further, the mechanical key comprises a key shaft, a handle, a key blade set, a key blade, a key pick, a key blade fixing pin and a key blade retaining ring. One end of the key shaft is provided with a round hole for installing a handle, and the other end of the key shaft is used for installing a key sheet set, a key fixing sheet, a key pulling sheet and a key sheet retaining ring.

Furthermore, the key sheet assembly is a plurality of hollow circular thin sheets, bosses matched with locking plate key grooves of the locking plate assembly are arranged on the outer circumference of each key sheet assembly, sector grooves with different angles are arranged on the circumference of the middle hole, the key sheet assembly can rotate around a key shaft, and the rotating angle is limited by a key sheet fixing pin; the key fixing sheet and the key sheet set are installed in a staggered mode; the key dial is a hollow circular thin sheet, a boss matched with a key slot of an unlocking dial piece on the lock body is arranged on the outer circumference of the key dial, a slot matched with a key piece fixing pin is arranged on the inner circumference of the key dial, and the key dial is limited to rotate by the key piece fixing pin; the key sheet retaining ring is arranged at the outermost end of the key shaft and used for limiting the key sheet set, the key retaining sheet and the key pulling sheet to move on the key shaft.

The utility model discloses following positive effect has:

(1) the locking plate unlocking grooves are arranged at different angles on the excircle circumference of the locking plate set, the unlocking groove positions of each locking plate are different, the secret key amount is large, the locking can be realized only by a key matched with the secret key amount, and the locking plate set has higher anti-theft property;

(2) the utility model provides a shell and locking plate set, unblock plectrum, lock fixed blade, loose axle set up to hollow structure, and rainwater and silt can not pile up inside the lock, have avoided leading to the lock to appear the trouble because of the corruption of rainwater or silt jam.

Drawings

Fig. 1 is a schematic view of a bottom perspective structure of a locking state according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the embodiment of the present invention in a locked state;

fig. 3 is a schematic cross-sectional view of the lock body in the locked state according to the embodiment of the present invention;

fig. 4 is a schematic sectional structural view of the housing in the embodiment of the present invention;

fig. 5 is a schematic perspective view of the inner portion (bolt position) of the lock body according to the embodiment of the present invention;

fig. 6 is a schematic perspective view of the inside (cylindrical pin position) of the lock body in the embodiment of the present invention;

fig. 7 is a schematic view of a three-dimensional structure of the locking plate set unlocking groove in alignment state in the embodiment of the present invention;

fig. 8 is a schematic cross-sectional view of the lock body in the opened state according to the embodiment of the present invention;

fig. 9 is a schematic structural view of a lock fixing blade according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a locking plate assembly according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a mechanical key in an initial state according to an embodiment of the present invention;

fig. 12 is a schematic structural view of a mechanical key in an unlocked state according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a key blade assembly according to an embodiment of the present invention;

fig. 14 is a schematic cross-sectional view of a mechanical key in an initial state according to an embodiment of the present invention;

fig. 15 is a schematic sectional view of the mechanical key in the unlocked state according to the embodiment of the present invention.

In the figure, 1 well cover, 2 lock bodies, 201 waterproof rubber plugs, 202 shells, 2021 key guide grooves, 2022 locking grooves, 2023 cavities, 2024 flanges, 2025 grooves, 203 movable shafts, 204 movable shaft baffle plates, 205 unlocking turntables, 206 lock sheet sets, 2061 lock sheet key grooves, 2062 lock sheet positioning grooves, 2063 lock sheet unlocking grooves, 207 unlocking plectrums, 2071 unlocking plectrum key grooves, 2072 unlocking plectrum unlocking grooves, 208 locking fixed blades, 2081 locking fixed blade key grooves, 2082 locking fixed blade bosses, 209 cylindrical pins, 210 positioning beads, 211 bolts, 212 torsion springs, 3 connecting rods, 4 supports, 5 lock bolts, 6 mechanical keys, 601 key shafts, 602 handles, 603 key sheet sets, 6031 key sheet bosses, 6032 sector grooves, 604 key fixed sheets, 605 key plectrums, 606 key sheet fixing pins and 607 key sheet retaining rings.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Referring to fig. 1-11, the present embodiment includes a manhole cover lock body installed on a manhole cover 1, the manhole cover lock body including a lock body 2, a connecting rod 3, a bracket 4, a lock bolt 5, and a mechanical key 6.

The lock body 2 comprises a shell 202, a locking plate set 206, an unlocking pulling plate 207, a lock fixing blade 208, a movable shaft 203, a movable shaft baffle 204, an unlocking turntable 205 and a waterproof rubber plug 201. The outer shell 202 is in a flange shaft shape, a cavity 2023 which is through up and down is arranged at the center of the outer shell, a flange 2024 is arranged at the upper end of the cavity 2023, the cavity 2023 is used for placing a locking plate set 206, an unlocking shifting plate 207, a lock fixing blade 208 and a movable shaft 203, the flange 2024 is used for limiting components mounted in the cavity to move upwards, and a key guide groove 2021 is formed in the flange 2024. The lock plate assembly 206 is formed by a plurality of hollow circular thin plates, a lock plate key groove 2061 is formed in the circumference of the middle hole and used for being matched with a boss 6031 on the outer circumference of the key plate assembly 603 to unlock, and lock plate unlocking grooves 2063 are formed in the circumference of the outer circumference at different angles and used for being matched with the bolt 211 to unlock. Evenly set up circular arc shape locking plate constant head tank 2062 on the excircle circumference of locking plate set 206 for with cylindric lock 209 and location ripples pearl 210 cooperation fixed locking plate set 206, dislocation when preventing that locking plate set 206 from receiving the vibration. The set of locking tabs 206 and the plurality of lock securing blades 208 are staggered within the cavity and coaxial with the housing 202, and are free to rotate within the housing 202. Two bosses 2082 are arranged on the outer circumference of the lock fixing blade 208 and are matched with the corresponding grooves 2025 on the shell 202 to prevent rotation, and a key slot 2081 of the lock fixing blade is arranged on the inner circumference. The outer circumference of the unlocking pick 207 is provided with an unlocking pick unlocking slot 2072, the unlocking pick unlocking slot 2072 and an unlocking pick key slot 2071 arranged in the inner hole are arranged at the same angle, two side edges of the unlocking pick unlocking slot 2072 are oblique angles, the bolt 211 firstly enters the unlocking pick unlocking slot 2072 during unlocking, and the bolt 211 firstly leaves the unlocking pick unlocking slot 2072 during locking. Unblock plectrum 207 places the rearmost end at locking plate set 206, be provided with L type groove on the outer circumference of loose axle 203 for place bolt 211, the bolt bottom is provided with the torsional spring 212, is used for bolt 211 to reset, loose axle 203 is installed at the inside lower floor of shell 202, and bolt 211 one end swing joint is on loose axle 203 under the effect of torsional spring 212 during shutting, and the other end gets into inside shell 202 locking groove 2022, dies loose axle 203 and shell 202 lock. The movable shaft baffle 204 is fixedly connected with the housing 202, and limits the lock plate set 206, the unlocking pick 207, the lock fixing blade 208 and the movable shaft 203 in the housing 202 to prevent axial movement. Three shafts are uniformly distributed on the unlocking turntable 205 and are used for connecting the connecting rods 3. Waterproof plug 201 is installed between the upper end of lock body 2 and well lid 1, plugs up lock body 2 at ordinary times, prevents that the rainwater from entering inside the lock.

One end of the connecting rod 3 is movably connected with three shafts on the unlocking turntable 205, and the other end is movably connected with the lock bolt 5.

The lock bolt 5 is of a cylindrical structure, one end of the lock bolt is provided with a threaded hole, and the lock bolt is movably connected with the connecting rod through a step screw.

The support 4 is fixed on the well lid 1, and a round hole is arranged in the middle of the support and used for supporting the lock bolt 5, and the lock bolt 5 moves in the round hole when the lock is turned on or turned off.

The mechanical key 6 includes a key shaft 601, a handle 602, a key blade set 603, a key blade 604, a key blade 605, a key blade securing pin 606, and a key blade retaining ring 607. One end of the key shaft 601 is provided with a round hole for mounting a handle, and the other end is provided with a key blade set 603, a key blade 604, a key pick 605 and a key blade retaining ring 607. The key piece set 603 is a plurality of hollow circular thin pieces, a boss 6031 matched with a lock piece key groove 2061 of the lock piece set 206 is arranged on the outer circumference, sector grooves 6032 with different angles are arranged on the circumference of the middle hole, the key piece set 603 can rotate around the key shaft 601, and the rotation angle is limited through a key piece fixing pin 606. The key blade 604 is interleaved with the collection of key blades 603. The key blade 605 is a hollow circular thin plate, a boss 6051 matched with a key slot 2071 of the unlocking blade 207 on the lock body is arranged on the outer circumference, a slot matched with the key blade fixing pin 606 is arranged on the inner circumference, and the rotation of the key blade fixing pin 606 is limited. The key blade retaining ring 607 is mounted on the outermost end of the key shaft 601 for limiting the movement of the key blade assembly 603, the key blade 604 and the key blade 605 on the key shaft 601.

The utility model discloses a switch lock process as follows:

a key plectrum boss 6051 of a mechanical key 6 is aligned with a key guide groove 2021 of a lock body shell and inserted into a lock body 2, the mechanical key is rotated clockwise, a key piece set 603 is stopped by a lock piece set 206 at the beginning when the mechanical key is rotated, after the mechanical key is rotated to a certain angle, a key piece fixing pin 605 is contacted with one side of a fan-shaped groove 6032 on the circumference of a middle hole of the key piece set 603 one by one, finally the lock piece set 206 is driven to rotate together, after the mechanical key is rotated by 180 degrees, all lock piece unlocking grooves 2063 on the circumference of the excircle of the lock piece set 206 are aligned, under the action of a torsion spring 212, a bolt 211 leaves a locking groove 2022 of the shell and enters the lock piece unlocking groove 2063, at the moment, the bolt 211 connects the lock piece set 206 and a movable shaft 203 into a whole, the key is continuously rotated by 90 degrees, a lock bolt 5 is driven by a connecting rod 3, an unlocking turntable 205 and the movable shaft 203 to rotate by 90 degrees, and the lock bolt retracts to be unlocked; after unlocking, the mechanical key is rotated in the opposite direction, the key pick 605 drives the unlocking pick 207 to rotate together, after the rotation angle reaches 90 degrees, under the action of the unlocking pick unlocking slot 2072, the bolt 211 is pushed out of the locking plate unlocking slot 2063 to enter the housing locking slot 2022, at this time, the movable shaft 203 is locked by the bolt 211, the key continues to rotate, the key blade fixing pin 605 contacts with the other side of the fan-shaped slot 6032 on the circumference of the middle hole of the key blade set 603 one by one, the locking plate set 206 is driven to rotate until the initial position, and the key is taken off to close the lock.

Various modifications and variations of the embodiments of the present invention may be made by those skilled in the art, and they are still within the scope of the present invention, provided they are within the scope of the claims and their equivalents.

What is not described in detail in the specification is prior art that is well known to those skilled in the art.

Claims (5)

1. The utility model provides an theftproof machinery well lid lock, is including installing the well lid lock body on the well lid, its characterized in that: the well lid lock body comprises a lock body, a plurality of connecting rods which are arranged at equal angles are connected to the lock body, the tail ends of the connecting rods are movably connected with lock bolts, supports are arranged on the lock bolts, the supports are fixed on the well lid, round holes are formed in the middles of the supports and used for supporting the lock bolts, the lock bolts can move in the round holes when the well lid is opened and closed, and the lock body is unlocked through a mechanical key.

2. The anti-theft mechanical manhole cover lock according to claim 1, wherein: the lock body comprises a shell, a locking plate set, an unlocking shifting plate, a lock fixing blade, a movable shaft baffle, an unlocking turntable and a waterproof rubber plug;

the lock is characterized in that the outer shell is in a flange shaft shape, a cavity which is communicated up and down is arranged in the center of the outer shell, a flange is arranged at the upper end of the cavity, the cavity is used for placing a locking plate assembly, an unlocking shifting plate, a locking fixed blade and a movable shaft, the flange is used for limiting a component arranged in the cavity to move upwards, and a key guide groove is formed in the flange; the lock plate assembly is a plurality of hollow circular thin plates, a lock plate key groove is formed in the circumference of the middle hole and used for being matched with a boss on the outer circumference of the key plate assembly to unlock, and lock plate unlocking grooves are formed in the circumference of the outer circumference at different angles and used for being matched with a bolt to unlock;

the locking plate assembly is characterized in that circular arc-shaped locking plate positioning grooves are uniformly formed in the outer circle circumference of the locking plate assembly, and the locking plate assembly is matched with the locking plate assembly through a cylindrical pin and a positioning wave bead to prevent dislocation of the locking plate assembly when the locking plate assembly is vibrated;

the lock plate set and the plurality of lock fixing blades are arranged in the cavity in a staggered mode, are coaxial with the shell and can freely rotate in the shell;

the outer circumference of the locking fixed blade is provided with a boss which is matched with a corresponding groove on the shell to prevent the shell from rotating, and the inner circumference of the locking fixed blade is provided with a locking fixed blade key slot;

an unlocking pick unlocking groove is formed in the outer circumference of the unlocking pick, the unlocking pick unlocking groove and an unlocking pick key groove arranged in the inner hole are placed at the same angle, and two side edges of the unlocking pick unlocking groove are oblique angles;

the unlocking shifting piece is placed at the rearmost end of the locking piece set, an L-shaped groove is formed in the outer circumference of the movable shaft and used for placing a bolt, a torsion spring is arranged at the bottom of the bolt and used for resetting the bolt, the movable shaft is installed at the lowermost layer in the shell, one end of the bolt is movably connected to the movable shaft under the action of the torsion spring during locking, the other end of the bolt enters the locking groove of the shell, and the movable shaft and the shell are locked;

the movable shaft baffle is fixedly connected with the shell, and the locking plate set, the unlocking shifting plate, the lock fixing blade and the movable shaft are limited in the shell to prevent axial movement;

the waterproof rubber plug is installed between the upper end of the lock body and the well lid, and rainwater is prevented from entering the interior of the lock.

3. The anti-theft mechanical manhole lock according to claim 1 or 2, characterized in that: the lock bolt is of a cylindrical structure, one end of the lock bolt is provided with a threaded hole, and the lock bolt is movably connected with the connecting rod through a step screw.

4. The anti-theft mechanical manhole lock according to claim 1 or 2, characterized in that: the mechanical key comprises a key shaft, a handle, a key sheet set, a key fixing sheet, a key shifting sheet, a key sheet fixing pin and a key sheet retaining ring; one end of the key shaft is provided with a round hole for installing a handle, and the other end of the key shaft is used for installing a key sheet set, a key fixing sheet, a key pulling sheet and a key sheet retaining ring.

5. The anti-theft mechanical manhole lock according to claim 4, wherein: the key sheet set is a plurality of hollow circular thin sheets, bosses matched with locking sheet key grooves of the locking sheet set are arranged on the outer circumference of the key sheet set, sector grooves with different angles are arranged on the circumference of the middle hole, the key sheet set can rotate around a key shaft, and the rotation angle is limited by a key sheet fixing pin; the key fixing piece and the key piece set are installed in a staggered mode; the key dial is a hollow circular thin sheet, a boss matched with a key slot of an unlocking dial piece on the lock body is arranged on the outer circumference of the key dial, a slot matched with a key piece fixing pin is arranged on the inner circumference of the key dial, and the key dial is limited to rotate by the key piece fixing pin; the key sheet retaining ring is arranged at the outermost end of the key shaft.

Images