Anti-theft passive well lid

Abstract

The invention relates to the technical field of well lids, in particular to an anti-theft passive well lid. According to the technical scheme, the anti-theft passive well lid comprises a lid body, a fixing ring and a key, the fixing ring is fixedly connected to the inner side of a well mouth, a locking mechanism is arranged on the lower side of the lid body, a control assembly is installed on the surface of the lower side of the lid body and comprises a third installation box, a control module and a first plug, and the third installation box is installed on the surface of the lower side of the lid body; the control module is mounted in the third mounting box, two first plugs are arranged at the top of the control module, two first jacks are formed in the bottom of the key, a storage battery is arranged in the key, the control module is electrically connected with the locking mechanism, and a protective partition plate is arranged at the top of the third mounting box and is in a horizontal closed state. Safety is enhanced, illegal opening is prevented, and due to the fact that no internal power source quick-wear part is arranged, the system can keep good durability in severe environments such as humid environments and corrosive environments.

Description

Technical Field

[0001] The present invention relates to the technical field of manhole covers, and in particular to an anti-theft passive manhole cover. Background Art

[0002] With the acceleration of urbanization, underground networks of municipal infrastructure such as cables, telecommunications, gas and water conservancy pipes are becoming increasingly complex and extensive. Although these facilities have greatly improved the efficiency of urban operations, they have also brought management challenges. In particular, in terms of manhole cover management, the traditional method of relying on manual inspections can no longer meet the needs. Due to the large number and wide distribution of manhole covers, coupled with insufficient protection measures and limited inspection personnel, problems such as theft, damage or improper opening of manhole covers are frequent, which poses a serious safety hazard to pedestrians and vehicles and affects the safety of the road.

[0003] In the existing technology, traditional manhole covers lack intelligent functions, which makes them vulnerable to theft or unauthorized opening, thus posing a safety hazard. In addition, smart manhole covers on the market usually rely on built-in power supplies, resulting in increased maintenance costs and increased system complexity. Especially during long-term operation, the natural loss and aging of the batteries inside the manhole covers are inevitable, which may cause equipment operation interruptions, thereby affecting overall work efficiency and service quality.

[0004] The patent with publication number CN107730694B discloses a control system for a passive mechanical lock in a manhole cover. The server is used to confirm the passive manhole cover operation authority of the intelligent terminal from the user ID obtained from the intelligent terminal; it is also used to store the relevant information of each passive manhole cover, and complete the information matching of the passive manhole cover according to the relevant information of the passive manhole cover collected and reported by the intelligent terminal; and complete the issuance of authorization information according to the matching result and the passive manhole cover operation authority; the intelligent terminal collects the relevant information of the passive manhole cover and reports it to the server. The present invention adopts a passive manhole cover, thus overcoming the problem that the electronic manhole cover in the prior art is easily unable to be unlocked normally due to power supply problems or damage to the electronic equipment in the manhole cover in harsh environments; in addition, the combined use of the intelligent terminal, the electronic unlocker and the server also overcomes the problem of lack of management of ordinary passive manhole covers in the prior art, but it does not make a specific design for the specific structure of the passive manhole cover, and the required procedures are relatively cumbersome, requiring the cooperation of multiple server unlockers and other components, and the operation is not convenient. Summary of the invention

[0005] The present invention provides an anti-theft passive manhole cover, which solves the problem that traditional manhole covers in the prior art lack intelligent functions, which makes them easy to be stolen or opened without authorization, thus posing a potential safety hazard.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A theft-proof passive manhole cover comprises a cover body, a fixing ring and a key, wherein the fixing ring is fixedly connected to the inner side of the manhole, a locking mechanism is arranged on the lower side of the cover body, a control component is installed on the lower surface of the cover body, the control component comprises a third installation box, a control module and a first plug, the third installation box is installed on the lower surface of the cover body, the control module is installed in the third installation box, two first plugs are arranged on the top of the control module, two first jacks are arranged on the bottom of the key, a battery is arranged inside the key, the control module is electrically connected to the locking mechanism, a protective partition is arranged on the top of the third installation box, the protective partition is in a horizontally closed state, when the key is inserted, the protective partition is opened, a through unlocking hole is opened on the cover body, and the upper part of the protective partition is directly opposite to the unlocking hole.

[0008] As a further technical solution, two side panels are symmetrically installed on both sides of the top of the third installation box, a first installation box is fixedly connected between the two side panels, two elastic members are installed in the first installation box, a trapezoidal plate is slidably arranged in the first installation box, an inclined surface on one side of the trapezoidal plate faces upward, one end of the inclined surface protrudes from the opening of the first installation box, the trapezoidal plate connects the two elastic members, the protective partition is rotatably installed on the first installation box through a torsion spring shaft, and a connecting plate is fixedly connected to the third installation box, and the connecting plate contacts the protective partition.

[0009] As a further technical solution, the lower side surface of the protective baffle contacts the upper plane of the trapezoidal plate, the width of the trapezoidal plate is greater than the width of the protective baffle, and two insertion gaps are formed on both sides of the protective baffle that are shorter than the trapezoidal plate. Two plug-ins are fixed on both sides of the bottom of the key, and the lower end edge of the plug-in is a bevel, which is an overall oblique arc protruding downward.

[0010] As a further technical solution, the first plug is inserted into the first socket to form an electrical connection.

[0011] As a further technical solution, two second sockets are provided at the bottom of the key, and two second plugs are provided on the control module. The second plugs are inserted into the second sockets to transfer the unlocking key and the unlocking authorization information.

[0012] As a further technical solution, the contact surface between the connecting plate and the protective partition is an inclined surface.

[0013] As a further technical solution, the locking mechanism includes a second mounting box, which is mounted on the lower side of the cover body, and a torsion motor is installed in the second mounting box. The output shaft of the torsion motor is fixedly connected to a triangular connecting piece, and the three branches of the triangular connecting piece are respectively hinged to three connecting rods, and the ends of the three connecting rods away from the triangular connecting piece are respectively hinged to three locking rods, and three limit plates are fixedly connected to the lower side of the cover body. The three locking rods are respectively inserted into the circular holes of the three sliding limit plates, and the locking rods are located on the lower side of the fixed ring.

[0014] As a further technical solution, a mounting ring is installed at the lower part of the cover body, the locking mechanism and the control assembly are located on the inner side of the mounting ring, and the locking rod extends out from the circumferential direction of the mounting ring.

[0015] As a further technical solution, two handles are symmetrically mounted on the cover body.

[0016] As a further technical solution, it also includes a sealing cover and a fixing bolt. A sealing ring is provided on the upper edge of the unlocking hole. One end of the sealing cover is hinged to the cover body. The sealing cover covers the upper side of the sealing ring. The sealing cover is fixed to the cover body by the fixing bolt.

[0017] The positive effects of the present invention are:

[0018] 1. The passive manhole cover activates the smart lock mechanism through external power supply, eliminating the risk of failure caused by aging or damage of the built-in battery, reducing maintenance costs and frequency, and improving the stability and reliability of the system.

[0019] 2. Enhanced security to prevent illegal opening, and since there are no internal power supply wearing parts, the system can maintain good durability in harsh environments such as humidity and corrosion.

[0020] 3. Local authorization is used to separate the manhole cover authorization from the manhole cover opening. At the same time, due to the timeliness of authorization, it can also prevent the loss of the authorization card or other factors that lead to the loss and illegal opening of the manhole cover. It can better reduce the risk of improper activation and theft of the manhole cover and better protect the property underground.

[0021] 4. The authorization center can plan in advance all the manhole covers that need to be authorized and the authorization time. The staff only needs to bring the authorization card to the work site to open all the manhole covers that need maintenance, reducing the tedious work steps of repeated authorization. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the first structure of the anti-theft passive manhole cover of the present invention;

[0023] Figure 2This is a schematic diagram of the first structure of the key in the present invention;

[0024] Figure 3 This is a schematic diagram of the second structure of the key in the present invention;

[0025] Figure 4 For the present invention Figure 1 Enlarged view of area A in the middle;

[0026] Figure 5 This is a schematic diagram of the second structure of the anti-theft passive manhole cover of the present invention;

[0027] Figure 6 For the present invention Figure 5 Enlarged view of area B in the middle;

[0028] Figure 7 This is a schematic diagram of the first internal structure of the anti-theft passive manhole cover of the present invention;

[0029] Figure 8 This is a schematic diagram of the second internal structure of the anti-theft passive manhole cover of the present invention;

[0030] Fig. 9 This is a schematic diagram of the third internal structure of the anti-theft passive manhole cover of the present invention;

[0031] Fig.10 This is a schematic diagram of the first structure of the control component in the present invention;

[0032] Fig.11 This is a second structural schematic diagram of the control component in the present invention;

[0033] Fig.12 This is a third structural schematic diagram of the control component in the present invention;

[0034] In the figure: 1. cover body; 2. fixing ring; 3. handle; 4. key; 5. insert; 6. first socket; 7. second socket; 8. sealing cover; 9. fixing bolt; 10. first installation box; 11. protective partition; 12. mounting ring; 13. second installation box; 14. third installation box; 15. torsion motor; 16. triangular connecting piece; 17. connecting rod; 18. locking rod; 19. limit plate; 20. side plate; 21. connecting plate; 22. elastic member; 23. trapezoidal plate; 24. control module; 25. first plug; 26. second plug; 27. sealing ring; 28. insertion seam. DETAILED DESCRIPTION

[0035] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Example 1

[0037] Combination Figure 1-6 As shown, an anti-theft passive manhole cover comprises a cover body 1, a fixing ring 2 and a key 4, wherein the fixing ring 2 is fixedly connected to the inner side of the manhole, a locking mechanism is arranged on the lower side of the cover body 1, a control assembly is installed on the lower side surface of the cover body 1, the control assembly comprises a third installation box 14, a control module 24 and a first plug 25, the third installation box 14 is installed on the lower side surface of the cover body 1, the control module 24 is installed in the third installation box 14, two first plugs 25 are arranged on the top of the control module 24, two first jacks 6 are opened on the bottom of the key 4, a battery is arranged inside the key 4, the control module 24 is electrically connected to the locking mechanism, and a protective partition 11 is arranged on the top of the third installation box 14;

[0038] The anti-theft passive manhole cover does not contain a power supply and does not require an external power supply line.

[0039] The protective partition 11 is in a horizontally closed state. When the key 4 is inserted, the protective partition 11 opens. A through unlocking hole is provided on the cover body 1, and the top of the protective partition 11 is opposite to the unlocking hole. When the manhole cover needs to be opened, the key 4 can be inserted from the unlocking hole.

[0040] Two side panels 20 are symmetrically installed on both sides of the top of the third installation box 14, and the first installation box 10 is fixedly connected between the two side panels 20. Two elastic members 22 are installed in the first installation box 10. A trapezoidal plate 23 is slidably arranged in the first installation box 10, and one side of the trapezoidal plate 23 is inclined upward, and one end of the inclined surface protrudes from the opening of the first installation box 10. The trapezoidal plate 23 connects the two elastic members 22, and the protective partition 11 is rotatably installed on the first installation box 10 through a torsion spring shaft. A connecting plate 21 is fixedly connected to the third installation box 14, and the connecting plate 21 contacts the protective partition 11.

[0041] The lower side surface of the protective partition 11 contacts the upper plane of the trapezoidal plate 23. The width of the trapezoidal plate 23 is greater than the width of the protective partition 11. Two insertion slits 28 are formed on both sides of the protective partition 11 that are shorter than the trapezoidal plate 23. Two insert pieces 5 are fixedly connected to both sides of the bottom of the key 4. The lower end edge of the insert piece 5 is a bevel, and the bevel as a whole is an oblique arc protruding downward.

[0042] When the manhole cover is in the closed state, since the lower surface of the protective partition 11 fits the upper plane of the trapezoidal plate 23, when the protective partition 11 rotates downward, it will be blocked by the upper plane of the trapezoidal plate 23 and the protective partition 11 cannot be opened downward. Therefore, the protective partition 11 forms an effective protection for the interior in the keyless state, and the protective partition 11 can only be opened by inserting the key 4, thereby further improving safety.

[0043] When the manhole cover needs to be opened, the handheld key 4 is inserted downward into the unlocking hole, and first the two insert pieces 5 are inserted downward from the insertion slots 28 on both sides;

[0044] Then, the lower arc-shaped oblique edges of the two plugs 5 will abut against the inclined surface of the trapezoidal plate 23, and then as the plug 5 continues to move downward, the plug 5 will abut against the trapezoidal plate 23, and the trapezoidal plate 23 will be subjected to pressure from the plug 5. During the descent of the protruding arc-shaped oblique surface of the plug 5, the trapezoidal plate 23 will be pushed toward one side of the elastic member 22, thereby compressing the elastic member 22, and the trapezoidal plate 23 slides in the first installation box 10, and then the protruding part of the trapezoidal plate 23 shrinks into the first installation box 10, that is, the trapezoidal plate 23 leaves from under the protective partition 11, and the protective partition 11 can be rotated downward, thereby, as the key 4 is further pressed downward, the protective partition 11 will be pressed downward, and then the protective partition 11 will be rotated downward to open, and the key 4 is inserted into the third installation box 14, and then the first plug 25 and the second plug 26 are respectively inserted into the first jack 6 and the second jack 7.

[0045] Further, the first plug 25 is inserted into the first jack 6 to form an electrical connection.

[0046] Two second jacks 7 are provided at the bottom of the key 4 , and two second plugs 26 are provided on the control module 24 . The second plugs 26 are inserted into the second jacks 7 to transfer the unlocking key and the unlocking authorization information.

[0047] The processor in the control module 24 receives the power provided by the battery of the key 4 and starts running, and then receives the unlocking key and unlocking authorization information through the second plug 26. After the information is verified correctly, the control module 24 can send an electrical signal to the locking mechanism, the locking mechanism opens, and then the manhole cover can be opened, completing the high-security unlocking of the passive manhole cover.

[0048] The contact surface between the connecting plate 21 and the protective partition 11 is an inclined surface to improve the sealing performance.

[0049] The key 4 can be charged regularly. Every time the manhole cover needs to be opened, the computer will input the timed unlocking authorization information into the key 4. Even if the key 4 is lost, the authorization will automatically expire and the manhole cover cannot be opened.

[0050] In addition, the protective partition 11 closes the lock hole, so that thieves cannot damage the core components of the locking mechanism and cannot open the manhole cover without power supply and authorization.

[0051] Passive manhole covers activate the smart lock mechanism through external power supply, eliminating the risk of failure caused by aging or damage of the built-in battery, reducing maintenance costs and frequency, and improving the stability and reliability of the system.

[0052] Security is further enhanced to prevent illegal opening, and since there are no internal power supply wearing parts, the system can maintain good durability in harsh environments such as moisture and corrosion.

[0053] Example 2

[0054] Combination Figure 1-12 As shown, the difference between this embodiment and embodiment 1 is that: the locking mechanism includes a second mounting box 13, the second mounting box 13 is mounted on the lower side of the cover body 1, a torsion motor 15 is mounted in the second mounting box 13, the output shaft of the torsion motor 15 is fixedly connected to a triangular connecting piece 16, the three branches of the triangular connecting piece 16 are respectively hinged to three connecting rods 17, the ends of the three connecting rods 17 away from the triangular connecting piece 16 are respectively hinged to three locking rods 18, the lower side of the cover body 1 is fixedly connected to three limit plates 19, the three locking rods 18 are respectively inserted into the circular holes of the three sliding limit plates 19, and the locking rods 18 are located on the lower side of the fixing ring 2.

[0055] In the locked state, the locking rod 18 is located at the lower side of the fixing ring 2. At this time, the locking rod is pressed against the lower side by the fixing ring 2, thereby effectively fixing and locking the manhole cover so that the manhole cover cannot be opened upward.

[0056] In this embodiment, the control module 24 sends an electrical signal to the locking mechanism to unlock, wherein the torsion motor 15 drives the triangular connecting piece 16 to rotate, and then the triangular connecting piece 16 drives the three connecting rods 17 to move, and the connecting rod 17 pulls the locking rod 18 toward the center of the circle, and then the locking rod 18 leaves from the bottom of the fixed ring 2, releasing the locked state, and then the manhole cover can be opened upwards.

[0057] A mounting ring 12 is installed at the lower part of the cover body 1. The locking mechanism and the control components are located on the inner side of the mounting ring 12. The locking rod 18 extends out from the ring of the mounting ring 12. The mounting ring 12 protects the components inside.

[0058] Two handles 3 are symmetrically mounted on the cover body 1, and the manhole cover can be directly lifted upward to open.

[0059] It also includes a sealing cover 8 and a fixing bolt 9. A sealing ring 27 is provided on the upper edge of the lock hole. One end of the sealing cover 8 is hinged to the cover body 1. The sealing cover 8 covers the upper side of the sealing ring 27. The sealing cover 8 is fixed to the cover body 1 by the fixing bolt 9.

[0060] In the normal closed state, the sealing cover 8 is in a closed state, and the fixing bolts 9 are tightened. In the case of theft of the manhole cover, the fixing bolts 9 are broken and opened, and then the lock hole is protected by a protective partition 11, which makes it impossible to open the lock, and it is also impossible to insert a crowbar or other lock-picking objects;

[0061] Furthermore, the thief does not have a corresponding matching power supply and cannot power the manhole cover, and the thief does not have the secret key and authorization information. Therefore, the multiple protections effectively avoid the phenomenon of manhole cover theft.

[0062] The authorization information is time-sensitive and can also prevent the loss of the authorization card or other factors from causing the manhole cover to be lost or illegally opened. It can better reduce the risk of improper activation and theft of the manhole cover and better protect the property underground.

[0063] The authorization center can plan in advance all the manhole covers that need to be authorized and the authorization time. The staff only needs to bring the authorization card to the work site to open all the manhole covers that need maintenance, reducing the tedious work steps of repeated authorization.

[0064] The above-mentioned embodiments are described in a relatively detailed and specific manner, expressing the preferred embodiments of the present invention, and are only used to illustrate the technical ideas and features of the present invention. The purpose is to enable technicians in this field to understand the contents of the present invention and implement them accordingly, but are not limited to the present invention. The patent scope of the present invention cannot be limited only by this embodiment, that is, any equivalent changes or modifications made to the spirit disclosed by the present invention, for researchers or technicians in this field, without departing from the structure of the present invention, local improvements within the system and changes and conversions between subsystems, etc., are still within the patent scope of the present invention.

Claims

1. An anti-theft passive manhole cover, characterized in that: The invention comprises a cover body (1), a fixing ring (2) and a key (4), wherein the fixing ring (2) is fixedly connected to the inner side of the wellhead, a locking mechanism is arranged on the lower side of the cover body (1), a control component is installed on the lower side surface of the cover body (1), and the control component comprises a third installation box (14), a control module (24) and a first plug (25), the third installation box (14) is installed on the lower side surface of the cover body (1), the control module (24) is installed in the third installation box (14), and the control module (24) is installed in the third installation box (14). Two first plugs (25) are arranged on the top, two first jacks (6) are arranged on the bottom of the key (4), a battery is arranged inside the key (4), the control module (24) is electrically connected to the locking mechanism, a protective partition (11) is arranged on the top of the third installation box (14), the protective partition (11) is in a horizontal closed state, when the key (4) is inserted, the protective partition (11) is opened, a through unlocking hole is arranged on the cover body (1), and the upper part of the protective partition (11) is directly opposite to the unlocking hole.

2. The anti-theft passive manhole cover according to claim 1, characterized in that: Two side plates (20) are symmetrically installed on both sides of the top of the third installation box (14), and the first installation box (10) is fixedly connected between the two side plates (20). Two elastic members (22) are installed in the first installation box (10). A trapezoidal plate (23) is slidably arranged in the first installation box (10), and the inclined surface of one side of the trapezoidal plate (23) faces upward, and one end of the inclined surface protrudes from the opening of the first installation box (10). The trapezoidal plate (23) connects the two elastic members (22). The protective baffle (11) is rotatably installed on the first installation box (10) through a torsion spring shaft. A connecting plate (21) is fixedly connected to the third installation box (14), and the connecting plate (21) contacts the protective baffle (11).

3. The anti-theft passive manhole cover according to claim 2, characterized in that: The lower side of the protective baffle (11) contacts the upper plane of the trapezoidal plate (23); the width of the trapezoidal plate (23) is greater than that of the protective baffle (11); two insertion slots (28) are formed at positions on both sides of the protective baffle (11) that are shorter than the trapezoidal plate (23); two inserting pieces (5) are fixedly connected to two sides of the bottom of the key (4); the lower end edge of the inserting piece (5) is a bevel, and the bevel as a whole is an oblique arc protruding downward.

4. The anti-theft passive manhole cover according to claim 3, characterized in that: The first plug (25) is inserted into the first socket (6) to form an electrical connection.

5. The anti-theft passive manhole cover according to claim 4, characterized in that: Two second sockets (7) are arranged at the bottom of the key (4), and two second plugs (26) are arranged on the control module (24). The second plugs (26) are inserted into the second sockets (7) to transmit the unlocking key and unlocking authorization information.

6. The anti-theft passive manhole cover according to claim 2, characterized in that: The contact surface between the connecting plate (21) and the protective partition (11) is an inclined surface.

7. The anti-theft passive manhole cover according to claim 5, characterized in that: The locking mechanism comprises a second mounting box (13), the second mounting box (13) being mounted on the lower side of the cover body (1), a torsion motor (15) being mounted in the second mounting box (13), the output shaft of the torsion motor (15) being fixedly connected to a triangular connecting piece (16), three branches of the triangular connecting piece (16) being respectively hinged to three connecting rods (17), one end of the three connecting rods (17) being away from the triangular connecting piece (16) being respectively hinged to three locking rods (18), the lower side of the cover body (1) being fixedly connected to three limit plates (19), the three locking rods (18) being respectively inserted into the circular holes of the three sliding limit plates (19), and the locking rods (18) being located on the lower side of the fixing ring (2).

8. The anti-theft passive manhole cover according to claim 7, characterized in that: A mounting ring (12) is installed at the lower part of the cover body (1), the locking mechanism and the control assembly are located on the inner side of the mounting ring (12), and the locking rod (18) extends out from the annular direction of the mounting ring (12).

9. The anti-theft passive manhole cover according to claim 1, characterized in that: Two handles (3) are symmetrically mounted on the cover body (1).

10. The anti-theft passive manhole cover according to claim 1, characterized in that: The invention also comprises a sealing cover (8) and a fixing bolt (9); a sealing ring (27) is arranged on the upper edge of the unlocking hole; one end of the sealing cover (8) is hinged to the cover body (1); the sealing cover (8) covers the upper side of the sealing ring (27); and the sealing cover (8) is fixed to the cover body (1) by the fixing bolt (9).

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