A theft-proof safety manhole cover with built-in abnormal movement sensor

Abstract

The present invention relates to the technical field of anti-theft manhole covers, and specifically to an anti-theft safety manhole cover with a built-in abnormal movement sensor, comprising a cover plate, a cover ring tube is arranged around the edge of the cover plate, and a pot shell is fixedly covered on one side of the cover plate, and a pushing unit and an integrated mechanism are distributed in the pot shell. The present invention adopts an intermittent power supply method for the abnormal movement sensor to enable the power supply to be used for a longer period of time. At the same time, the abnormal movement on the cover plate will affect the intermittent power supply frequency of the abnormal movement sensor. If the abnormal movement on the cover plate is severe, the power supply frequency of the abnormal movement sensor automatically increases, so that information can be transmitted to a host terminal in time. Conversely, if the abnormal movement on the cover plate is small, the power supply interval of the abnormal movement sensor is longer. The manhole cover of the present invention can be automatically adjusted, and the abnormal movement sensor can be powered on in time to reflect the environmental information above the manhole cover, and can also control the abnormal movement sensor to be not powered on or powered on less during idle time.

Description

Technical Field

[0001] The invention relates to the technical field of anti-theft manhole covers, in particular to an anti-theft safety manhole cover with a built-in abnormal movement sensor. Background Art

[0002] Manhole covers are used to cover deep wells on roads or in homes to prevent people or objects from falling. Manhole covers can be divided into metal manhole covers, high-strength fiber cement concrete manhole covers and resin manhole covers according to their materials. They are generally round and can be used in green belts, sidewalks, motor vehicle lanes, docks and alleys. In traditional technologies, manhole covers with fixed abnormal movement sensors can send abnormal movement signals to the host terminal, and reflect the environment above the manhole cover by analyzing the abnormal movement information. The position information of the manhole cover and the environment above the manhole cover can be judged and controlled. The abnormal movement sensor continuously sends signals to the host terminal. The disadvantage is that when the power supply line is inconvenient to connect, the abnormal movement sensor needs to be equipped with an independent power supply. The power supply will quickly run out of power if it works continuously, and the power supply needs to be replaced frequently, which requires more manpower maintenance. In this way, the manhole cover cannot be put into use in large quantities, so it is necessary to improve the battery life. For this reason, the present invention provides an anti-theft safety manhole cover with a built-in abnormal movement sensor. Summary of the invention

[0003] The object of the present invention is to provide an anti-theft safety manhole cover with a built-in abnormal movement sensor to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an anti-theft safety manhole cover with a built-in abnormal movement sensor, comprising a cover plate, a cover ring cylinder is arranged at the edge of the cover plate, a pot shell is fixedly covered on one side of the cover plate, pushing units and an integrated mechanism are distributed in the pot shell, a plurality of pushing units are evenly arranged around the integrated mechanism, one end of the pushing unit passes through a cylinder arranged on the cover plate and contacts with the cover ring cylinder, a drain pipe passes through the pot shell, one end of the drain pipe is connected to a drain hole provided on the cover plate, the integrated mechanism comprises an instrument group, a switch group for controlling the power on and off of the instrument group, and a collecting device for providing power to the switch group, and the collecting device is transmission-connected to the pushing unit.

[0005] The pushing unit includes a ring gear, a reciprocating shaft, a one-way bearing, a unit rod, a unit frame, a control plate and a spring. The control plate slides through a plate hole opened on the cylinder of the cover plate, and one end of the control plate protrudes into an annular groove opened on the inner wall of the cover ring cylinder. One end of the reciprocating shaft is connected to a row of teeth meshing transmission arranged at the other end of the control plate through a fixed gear. The other end of the reciprocating shaft is sleeved with a one-way bearing, and a ring gear is sleeved on the outside of the one-way bearing. The reciprocating shaft is movably sleeved in a through hole opened on the unit frame, and the unit rod slides through a column hole opened on the unit frame, and a spring is sleeved on the unit rod. One end of the unit rod is fixed on a convex plate arranged on the control plate, and the spring is supported between the unit frame and the convex plate.

[0006] The collective motion device includes a Y-shaped plate frame, a double-control gear, a fixed rod, a worm, a T-plate, a side gear and a side shaft, wherein one end of the fixed rod is fixed on the cover plate, and the fixed rod is movably sleeved in a through hole opened in the middle of the Y-shaped plate frame; the Y-shaped plate frame is fixed on the double-control gear with ring teeth both inside and outside, and the inner teeth on the double-control gear are meshingly connected to the side gear for transmission, and the outer teeth on the double-control gear are meshingly connected to the ring gear for transmission; one end of the side shaft is fixed in the middle of the side gear, and the other end is meshingly connected to the bevel gear fixed at one end of the worm through a fixed bevel gear; the worm and the side shaft are respectively movably sleeved in two through holes opened in the T-plate, and the other end of the fixed rod is fixedly connected to the T-plate.

[0007] The switch group includes a splice for controlling the stored force, an interception frame for limiting the position of the splice, and an integrated frame for supporting the splice and the interception frame. The end of the integrated frame is fixed on the cover plate, and the instrument group is connected to the splice.

[0008] The instrument group includes a power supply, an abnormal movement sensor, a head wire, a loop wire and a tail wire. The loop wire is connected between the power supply and the abnormal movement sensor, the head wire is connected to one side of the power supply, and the tail wire is connected to one side of the abnormal movement sensor.

[0009] The instrument group also includes an instrument frame, an insulating J-shaped column and a metal J-shrapnel. One end of the instrument frame is fixed on the integrated frame. The instrument frame supports the positioning power supply and the abnormal movement sensor. The insulating J-shaped column and the metal J-shrapnel are both fixed on the instrument frame. One end of the head wire is connected to the metal J-shrapnel.

[0010] The coupling device includes an insulating tube, a metal ring tube, a mainspring, a central control shaft and an S-shaped metal spring. The central control shaft is fixedly sleeved with a mainspring on the outside, and an insulating tube is connected to the external ring of the mainspring. The insulating tube is fixedly sleeved with a metal ring tube on the outside. The S-shaped metal spring is supported by a convex body on the outside of the metal ring tube. One end of the central control shaft is connected to the spiral teeth on the fixed gear and the worm through the meshing transmission. The other end of the central control shaft is movably sleeved in a through hole opened on the integrated frame. The insulating J-shaped column intercepts and positions the S-shaped metal spring. After the S-shaped metal spring breaks through the interception of the insulating J-shaped column, it contacts the metal C-shaped column during the circumferential movement. One end of the tail wire is connected to the metal C-shaped column, and the metal J spring contacts the bottom surface of the metal ring tube.

[0011] The joint also includes a metal C-shaped column and an L-shaped frame. The metal ring tube is ringed with a metal C-shaped column on the outside. One end of the L-shaped frame is fixed to the integrated frame. Two symmetrically distributed L-shaped frames are fixed to the outside of the metal C-shaped column. The L-shaped frame is inserted into the annular groove opened on the outer wall of the insulating tube by setting an arc plate.

[0012] The interception frame includes an arc-shaped clamping plate and a disc frame, and a plurality of arc-shaped clamping plates are vertically arranged and fixed on the disc frame. The arc-shaped clamping plates are inserted into the movement path of the protrusion of the metal ring tube to intercept and limit the rotation of the metal ring tube, and the arc-shaped clamping plates slide through the plate holes opened on the integrated frame.

[0013] The interception frame also includes a lead disk, a ring plate frame and a rocker arm. One end of the rocker arm is movably embedded in a ball groove opened on the integrated frame through a fixed ball body, and the other end of the rocker arm is fixed with a lead disk. The waist of the rocker arm is fixed with a ring plate frame, and the ring plate frame supports and pushes the ring body set on the disk frame by swinging.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention adopts an intermittent power supply method for the abnormal movement sensor to enable the power supply to be used for a longer period of time. At the same time, the abnormal movement on the cover plate will affect the intermittent power supply frequency of the abnormal movement sensor. If the abnormal movement on the cover plate is severe, the power supply frequency of the abnormal movement sensor will automatically increase, so that the information can be transmitted to the host terminal in time. Conversely, if the abnormal movement on the cover plate is small, the power supply interval of the abnormal movement sensor will be longer. Because the abnormal movement sensor is frequently powered on when the abnormal movement is small, the abnormal movement information transmitted by the abnormal movement sensor is the same. In this way, the same work will occur again, which will result in unnecessary power consumption. Therefore, the manhole cover of the present invention can be automatically adjusted, and the abnormal movement sensor can be powered on in time to reflect the environmental information above the manhole cover, and the abnormal movement sensor can be controlled to be not powered on or powered on less during idle periods.

[0016] 2. The present invention uses a plurality of pushing units to buffer the relative shaking between the cover plate and the cover ring tube. The pushing units collect power and then transmit it to the coupling device through the power collection device. After the power is saturated, the coupling device automatically releases the power, causing the abnormal movement sensor to be energized. Therefore, the power-on frequency of the abnormal movement sensor is affected by the abnormal movement of the cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention.

[0018] Figure 2 Schematic diagram of the drainage pipe location.

[0019] Figure 3 This is a schematic diagram of the location of the integrated mechanism.

[0020] Figure 4 It is a schematic diagram of the integrated mechanism structure.

[0021] Figure 5 It is a schematic diagram of the pushing unit structure.

[0022] Figure 6 This is a schematic diagram of the location of the collection device.

[0023] Figure 7 It is a schematic diagram of the structure of the collecting device.

[0024] Figure 8 This is a schematic diagram of the switch group structure.

[0025] Fig. 9 This is a schematic diagram of the instrument group structure.

[0026] Fig.10 This is a schematic diagram of the integrated frame structure.

[0027] Fig.11 This is a schematic diagram of the joint structure.

[0028] Fig.12 It is a schematic diagram of the metal ring cylinder structure.

[0029] Fig.13 This is a schematic diagram of the interceptor structure.

[0030] Fig.14 This is a schematic diagram of the position of the lead disk.

[0031] In the figure: cover plate 1, cover ring cylinder 2, pot shell 3, push unit 4, integrated mechanism 5, drain pipe 6, instrument group 7, switch group 8, collective device 9, ring gear 10, reciprocating shaft 11, one-way bearing 12, unit rod 13, unit frame 14, control board 15, spring 16, Y-type plate frame 17, double control gear 18, fixed rod 19, worm 20, T plate 21, side gear 22, side shaft 23, interception frame 24, overlap Tool 25, integrated frame 26, power supply 27, instrument frame 28, head wire 29, abnormal movement sensor 30, insulating J-shaped column 31, metal J spring 32, loop wire 33, tail wire 34, metal C-shaped column 35, insulating tube 36, spring 37, central control shaft 38, S-shaped metal spring 39, metal ring tube 40, L-shaped frame 41, lead disk 42, arc-shaped clamping plate 43, ring plate frame 44, pendulum rod 45, disk frame 46. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in 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 technical solutions in 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.

[0033] See also Figures 1 to 14The present invention provides a technical solution: an anti-theft safety manhole cover with a built-in abnormal movement sensor, comprising a cover plate 1, a cover ring tube 2 is arranged at the edge of the cover plate 1, a pot shell 3 is fixedly covered on one side of the cover plate 1, a pushing unit 4 and an integrated mechanism 5 are distributed in the pot shell 3, a plurality of pushing units 4 are evenly arranged around the integrated mechanism 5, one end of the pushing unit 4 passes through the cylinder provided on the cover plate 1 and contacts with the cover ring tube 2, a drain pipe 6 passes through the pot shell 3, one end of the drain pipe 6 is connected with the drain hole provided on the cover plate 1, the integrated mechanism 5 comprises an instrument group 7, a switch group 8 for controlling the power on and off of the instrument group 7, and a collection device 9 for providing power to the switch group 8, and the collection device 9 is transmission-connected to the pushing unit 4.

[0034] refer to Figure 5 It is understood that the pushing unit 4 includes a ring gear 10, a reciprocating shaft 11, a one-way bearing 12, a unit rod 13, a unit frame 14, a control plate 15 and a spring 16. The control plate 15 slides through the plate hole opened on the cylinder of the cover plate 1, and one end of the control plate 15 protrudes into the annular groove opened on the inner wall of the cover ring cylinder 2. One end of the reciprocating shaft 11 is connected by a row of teeth meshing transmission arranged at the other end of the control plate 15 through a fixed gear, and the other end of the reciprocating shaft 11 is sleeved with a one-way bearing 12, and the outside of the one-way bearing 12 is sleeved with a ring gear 10. The reciprocating shaft 11 is movably sleeved in a through hole opened in the unit frame 14, and the unit rod 13 slides through the column hole opened in the unit frame 14, and the unit rod 13 is sleeved with a spring 16, one end of the unit rod 13 is fixed on a convex plate arranged on the control plate 15, and the spring 16 is supported between the unit frame 14 and the convex plate.

[0035] refer to Figure 7 It is understood that the collecting device 9 includes a Y-type plate frame 17, a double-control gear 18, a fixed rod 19, a worm 20, a T-plate 21, a side gear 22 and a side shaft 23, one end of the fixed rod 19 is fixed on the cover plate 1, and the fixed rod 19 is movably sleeved in a through hole opened in the middle of the Y-type plate frame 17, the Y-type plate frame 17 is fixed on the double-control gear 18 with ring teeth both inside and outside, and the internal teeth on the double-control gear 18 are meshed and connected with the side gear 22, and the external teeth on the double-control gear 18 are meshed and connected with the ring gear 10, one end of the side shaft 23 is fixed at the middle of the side gear 22, and the other end is meshed and connected with the bevel gear fixed at one end of the worm 20 through a fixed bevel gear, the worm 20 and the side shaft 23 are respectively movably sleeved in two through holes opened in the T-plate 21, and the other end of the fixed rod 19 is fixedly connected to the T-plate 21.

[0036] refer to Figure 8 It is understood that the switch group 8 includes a joint 25 for controlling the stored force, an interception frame 24 for limiting the position of the joint 25, and an integrated frame 26 for supporting the joint 25 and the interception frame 24. The end of the integrated frame 26 is fixed on the cover plate 1, and the instrument group 7 and the joint 25 are connected.

[0037] refer to Fig. 9 It is understood that the instrument group 7 includes a power supply 27, an abnormal movement sensor 30, a head wire 29, a loop wire 33 and a tail wire 34. The loop wire 33 is connected between the power supply 27 and the abnormal movement sensor 30, the head wire 29 is connected to one side of the power supply 27, and the tail wire 34 is connected to one side of the abnormal movement sensor 30.

[0038] The power supply 27 and the abnormal movement sensor 30 are both existing technical equipment. The abnormal movement sensor 30 can detect abnormal movements on the cover plate 1, and judge whether the cover plate 1 is damaged and the specifications of the vehicle passing over the cover plate 1 by analyzing the vibration, and send a position signal to the host terminal. In the traditional technology, the power supply 27 continuously supplies power to the abnormal movement sensor 30, so that the power supply 27 is easily exhausted and the working period is short. Therefore, the present invention adopts an intermittent power supply method to directly improve the endurance of the power supply 27, so that workers can repair and maintain the manhole cover at longer intervals, saving human resources. The manhole cover of the present invention also has an anti-theft function. If the manhole cover is stolen manually, the edge of the manhole cover, that is, the cover ring tube 2, needs to be lifted up first during the process of stealing the manhole cover. The cover plate 1 can shake in the cover ring tube 2, and the cover ring tube 2 is tilted, which is bound to cause the cover plate 1 to offset and shake, thereby automatically triggering power supply, and the abnormal movement sensor 30 sends a signal to the host terminal, showing that the manhole cover has left the specified position, so that the host terminal determines that someone has stolen the manhole cover.

[0039] The instrument group 7 also includes an instrument frame 28, an insulating J-shaped column 31 and a metal J-shrapnel 32. One end of the instrument frame 28 is fixed on the integrated frame 26. The instrument frame 28 supports the positioning power supply 27 and the abnormal movement sensor 30. The insulating J-shaped column 31 and the metal J-shrapnel 32 are both fixed on the instrument frame 28. One end of the head wire 29 is connected to the metal J-shrapnel 32.

[0040] The bridging device 25 includes an insulating tube 36, a metal ring tube 40, a spring 37, a central control shaft 38 and an S-shaped metal spring 39. The central control shaft 38 is fixedly sleeved with a spring 37 on the outside, and the outer ring of the spring 37 is connected to the insulating tube 36. The insulating tube 36 is fixedly sleeved with a metal ring tube 40 on the outside. The S-shaped metal spring 39 is supported by a convex body on the outside of the metal ring tube 40. One end of the central control shaft 38 is connected to the helical teeth on the fixed gear and the worm 20 through the meshing transmission. The other end of the central control shaft 38 is movably sleeved in the through hole opened on the integrated frame 26. The insulating J-shaped column 31 intercepts and positions the S-shaped metal spring 39. After the S-shaped metal spring 39 breaks through the interception of the insulating J-shaped column 31, it contacts the metal C-shaped column 35 in the circumferential movement. One end of the tail wire 34 is connected to the metal C-shaped column 35, and the metal J spring 32 contacts the bottom surface of the metal ring tube 40.

[0041] The bridging device 25 also includes a metal C-shaped column 35 and an L-shaped frame 41. The metal ring tube 40 is ringed with a metal C-shaped column 35 on the outside. One end of the L-shaped frame 41 is fixed to the integrated frame 26. Two symmetrically distributed L-shaped frames 41 are fixed to the outside of the metal C-shaped column 35. The L-shaped frame 41 is inserted into the annular groove opened on the outer wall of the insulating tube 36 by setting an arc plate.

[0042] The interception frame 24 includes an arc-shaped clamping plate 43 and a disk frame 46, on which a plurality of arc-shaped clamping plates 43 are vertically fixed in a ring. The arc-shaped clamping plates 43 are inserted into the movement path of the convex body of the metal ring tube 40 to intercept and limit the rotation of the metal ring tube 40. The arc-shaped clamping plates 43 slide through the plate holes opened on the integrated frame 26.

[0043] The interception frame 24 also includes a lead disk 42, a ring plate frame 44 and a rocker arm 45. One end of the rocker arm 45 is movably embedded in a ball groove provided on the integrated frame 26 through a fixed ball body, and the other end of the rocker arm 45 is fixed with the lead disk 42. The waist of the rocker arm 45 is fixed with a ring plate frame 44, and the ring plate frame 44 supports and pushes the ring body provided on the disk frame 46 by swinging.

[0044] When a vehicle passes over the cover plate 1, water accumulates on the cover plate 1, or people walk over the cover plate 1, the cover plate 1 will shake at different frequencies and amplitudes. In the prior art, the abnormal movement sensor 30 detects and determines the different vibrations from the cover plate 1, and then analyzes the situation above the manhole cover. The power supply 27 to the abnormal movement sensor 30 is based on the shaking of the cover plate 1. If the manhole cover is in an idle state, the cover plate 1 is no longer shaken by external influences, and the power supply 27 will not supply power to the abnormal movement sensor 30, so that no electricity is wasted. Conversely, if the cover plate 1 shakes frequently within a period of time, it will automatically cause the power supply 27 to supply power to the abnormal movement sensor 30. The more frequently the cover plate 1 vibrates, the more frequently the power supply 27 will become, so that the abnormal movement sensor 30 can be detected. In order to monitor the manhole covers more frequently during the period when the manhole covers frequently move, the transmission principle is: the cover ring tube 2 is fixed at the position of the sewer outlet and does not move, the cover plate 1 can shake slightly in the cover ring tube 2, and the environmental influence above the cover plate 1 causes the cover plate 1 to vibrate, that is, the abnormal movement is reflected by the shaking of the cover plate 1, and the shaking of the cover plate 1 drives the pushing unit 4 to move, so that specifically the relative shaking between the cover plate 1 and the cover ring tube 2 causes the extension and contraction of part of the control plate 15, and the extension and contraction of the control plate 15 drives the reciprocating shaft 11 to reciprocate, and then causes the intermittent directional rotation of the ring gear 10 through the one-way bearing 12, and then drives the side gear 22 through the rotation of the double-control gear 18, and then the side shaft 23 drives the worm 20, and the worm 20 drives the central control shaft 38 to rotate, and the central control shaft The rotation of 38 causes the mainspring 37 to contract and store power. After the power is fully stored, the mainspring 37 is released to make the metal ring tube 40 rotate one circle. The metal ring tube 40 drives the S-shaped metal spring 39. The S-shaped metal spring 39 first breaks through the interception of the insulating J-shaped column 31. The S-shaped metal spring 39 is released from the metal C-shaped column 35 in the subsequent circular movement. In this way, the power supply path is unobstructed, and the abnormal movement sensor 30 sends a signal after being energized. Since the S-shaped metal spring 39 will be intercepted and blocked by the insulating J-shaped column 31 again after each rotation, the mainspring 37 needs to store power again in order to make the S-shaped metal spring 39 break through the interception again. Therefore, the rotation of the metal ring tube 40 is intermittent, and the contact between the S-shaped metal spring 39 and the metal C-shaped column 35 is intermittent. The intermittent period depends on the cover plate 1. The abnormal movement of the cover plate 1 is violent, which naturally causes the pushing unit 4 to continuously collect power, and finally causes the mainspring 37 to quickly accumulate power and release it, so that the abnormal movement sensor 30 can be powered quickly, and the power supply interval time of the abnormal movement sensor 30 automatically becomes shorter. Conversely, there are fewer abnormal movements on the cover plate 1, and the power supply interval time of the abnormal movement sensor 30 becomes longer. The abnormal movement sensor 30 tests the abnormal movement of the cover plate 1 once each time it is powered on. The cover plate 1 has few abnormal movements, so the test interval time of the abnormal movement sensor 30 is naturally long, thereby effectively avoiding the waste of electricity. Because the cover plate 1 has few abnormal movements, the abnormal movement sensor 30 frequently tests the abnormal movement situation. There is no need for the abnormal movement sensor 30 to be tested frequently and multiple times in a short period of time. The purpose of such a mechanism is consistent with the work of the coupling 25.

[0045] If the manhole cover is stolen manually, the abnormal movement sensor 30 needs to be powered continuously so that the abnormal movement sensor 30 can continuously send the location information of the manhole cover to the host terminal, thereby locating the position of the manhole cover. First, the edge of the manhole cover needs to be lifted. After the cover ring tube 2 is tilted, the cover plate 1 will naturally shake violently. In addition, the manhole cover will also cause violent movement of the cover plate 1 relative to the cover ring tube 2 during transportation. This transmission causes the abnormal movement sensor 30 to be powered. As mentioned before, the power is turned on because the S-shaped metal spring 39 that moves around is in contact with the metal C-shaped column 35. The specific power-on path is that the current in the power supply 27 passes through the head wire 29, and then enters the metal ring tube 40 through the metal J spring 32, and then enters the contacted metal C-shaped column 35 through the S-shaped metal spring 39, and then enters the abnormal movement sensor 30 through the tail wire 34, forming a connected path, and the abnormal movement sensor 30 is powered on and works.

[0046] In addition, due to the appearance and shape of the manhole cover, the personnel who carry the manhole cover must stand it up to carry it smoothly. It is more laborious to carry the manhole cover horizontally, and the shaking of the cover plate 1 cannot be avoided. When the manhole cover is stood up, the cover plate 1 will also shake. In either case, the power supply caused by the shaking cannot be avoided. In addition, the manhole cover standing up will also trigger the uninterruptible power supply mechanism. Fig.14 and Figure 3 It is understood that when the manhole cover is laid flat, the lead disk 42 remains in a falling state. If the manhole cover is erected, the interception frame 24 will directly drive the rocker arm 45 to swing, and then the ring plate frame 44 swings to compress the disk frame 46. The disk frame 46 moves to drive the arc-shaped clamping plate 43, and the arc-shaped clamping plate 43 is inserted into the orbital motion path of the convex body on the metal ring tube 40. In this way, the metal ring tube 40 will be blocked by the arc-shaped clamping plate 43 during rotation and stop rotating. The S-shaped metal spring piece 39 stops during its orbital motion due to interception. After stopping, the S-shaped metal spring piece 39 contacts the metal C-shaped column 35, and the S-shaped metal spring piece 39 and the metal C-shaped column 35 will not be separated. In this way, the subsequent power-on of the abnormal movement sensor 30 will not end, and the abnormal movement sensor 30 will continue to be powered on and work, and continue to send a manhole cover theft signal to the host terminal.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-theft safety manhole cover with a built-in abnormal movement sensor, comprising a cover plate (1), characterized in that: A cover ring cylinder (2) is arranged around the edge of the cover plate (1), a pot shell (3) is fixedly covered on one side of the cover plate (1), a pushing unit (4) and an integrated mechanism (5) are distributed in the pot shell (3), a plurality of pushing units (4) are evenly arranged around the integrated mechanism (5), one end of the pushing unit (4) passes through a cylinder provided on the cover plate (1) and contacts the cover ring cylinder (2), a drain pipe (6) passes through the pot shell (3), one end of the drain pipe (6) is connected to a drain hole provided on the cover plate (1), the integrated mechanism (5) comprises an instrument group (7), a switch group (8) for controlling the power on and off of the instrument group (7), and a driving device (9) for providing power to the switch group (8), the driving device (9) and the pushing unit (4) are in driving connection; The pushing unit (4) comprises a ring gear (10), a reciprocating shaft (11), a one-way bearing (12), a unit rod (13), a unit frame (14), a control plate (15) and a spring (16); the control plate (15) slides through a plate hole provided on the cylinder body of the cover plate (1); one end of the control plate (15) protrudes into a ring groove provided on the inner side wall of the cover ring cylinder (2); one end of the reciprocating shaft (11) is connected to a row of teeth meshing and transmission arranged on the other end of the control plate (15) through a fixed gear; the other end of the reciprocating shaft (11) is sleeved with a one-way bearing (12); the outer side of the one-way bearing (12) is sleeved with a ring gear (10); the reciprocating shaft (11) is movably sleeved in a through hole provided on the unit frame (14); the unit rod (13) slides through a column hole provided on the unit frame (14); and the unit rod (13) is sleeved with a spring (16); The switch group (8) comprises a connecting tool (25) for controlling the stored force, an interception frame (24) for limiting the position of the connecting tool (25), and an integrated frame (26) for supporting the connecting tool (25) and the interception frame (24); The bridging device (25) comprises an insulating tube (36), a metal ring tube (40), a spring (37), a central control shaft (38) and an S-shaped metal spring (39). The bridging device (25) further comprises a metal C-shaped column (35) and an L-shaped frame (41). The metal ring tube (40) is provided with a metal C-shaped column (35) on the outside. One end of the L-shaped frame (41) is fixed to the integrated frame (26). Two symmetrically distributed L-shaped frames (41) are fixed to the outside of the metal C-shaped column (35). The L-shaped frame (41) is inserted into a ring groove provided on the outer wall of the insulating tube (36) by an arc plate. The integrated motion device (9) comprises a Y-shaped plate frame (17), a double-control gear (18), a fixed rod (19), a worm (20), a T plate (21), a side gear (22 ) and a side shaft (23), wherein one end of the fixed rod (19) is fixed on the cover plate (1), the fixed rod (19) is movably sleeved in a through hole opened in the middle of the Y-shaped plate frame (17), the Y-shaped plate frame (17) is fixed on a double-control gear (18) with teeth arranged in both inner and outer rings, and the inner teeth on the double-control gear (18) are meshingly connected to the side gear (22), and the outer teeth on the double-control gear (18) are meshingly connected to the ring gear (10), one end of the side shaft (23) is fixed to the middle of the side gear (22), and the other end is meshingly connected to the bevel gear fixed at one end of the worm (20) through a fixed bevel gear, the worm (20) and the side shaft (23) are respectively movably sleeved in two through holes opened in the T-plate (21), and the other end of the fixed rod (19) is fixedly connected to the T-plate (21); The end of the integrated frame (26) is fixed on the cover plate (1), and the instrument group (7) and the connecting tool (25) are connected; The instrument group (7) comprises a power supply (27), an abnormal movement sensor (30), a head wire (29), a return wire (33) and a tail wire (34); the return wire (33) is connected between the power supply (27) and the abnormal movement sensor (30); one side of the power supply (27) is connected to the head wire (29); and one side of the abnormal movement sensor (30) is connected to the tail wire (34); The instrument group (7) further comprises an instrument frame (28), an insulating J-shaped column (31) and a metal J-shrapnel (32); one end of the instrument frame (28) is fixed to the integrated frame (26); the instrument frame (28) supports the positioning power supply (27) and the abnormal movement sensor (30); the insulating J-shaped column (31) and the metal J-shrapnel (32) are both fixed to the instrument frame (28); one end of the head wire (29) is connected to the metal J-shrapnel (32); The central control shaft (38) is externally fixedly sleeved with a spring (37), the external ring of the spring (37) is connected to an insulating tube (36), the external ring of the insulating tube (36) is fixedly sleeved with a metal ring tube (40), the external part of the metal ring tube (40) is supported by a convex body provided on the outside of the metal ring tube (40), one end of the central control shaft (38) is connected to the spiral teeth on the fixed gear and the worm (20) through meshing transmission, the other end of the central control shaft (38) is movably sleeved in a through hole opened on the integrated frame (26), the insulating J-shaped column (31) intercepts and blocks the S-shaped metal spring (39), the S-shaped metal spring (39) contacts the metal C-shaped column (35) in the circumferential movement after breaking through the interception of the insulating J-shaped column (31), one end of the tail wire (34) is connected to the metal C-shaped column (35), and the metal J spring (32) contacts the bottom surface of the metal ring tube (40).

2. The anti-theft safety manhole cover with built-in abnormal movement sensor according to claim 1, characterized in that: One end of the unit rod (13) is fixed to a convex plate provided on the control plate (15), and the spring (16) is supported between the unit frame (14) and the convex plate.

3. The anti-theft safety manhole cover with built-in abnormal movement sensor according to claim 1, characterized in that: The interception frame (24) comprises an arc-shaped clamping plate (43) and a disk frame (46). A plurality of arc-shaped clamping plates (43) are vertically arranged and fixed on the disk frame (46). The arc-shaped clamping plates (43) are inserted into the movement path of the convex body of the metal ring cylinder (40) to intercept and limit the rotation of the metal ring cylinder (40). The arc-shaped clamping plates (43) slide through the plate holes opened on the integrated frame (26).

4. The anti-theft safety manhole cover with built-in abnormal movement sensor according to claim 3 is characterized by: The interception frame (24) further comprises a lead disk (42), a ring plate frame (44) and a swing rod (45), one end of the swing rod (45) being movably embedded in a ball groove provided on the integrated frame (26) through a fixed ball body, the other end of the swing rod (45) being fixed with the lead disk (42), the waist of the swing rod (45) being fixedly sleeved with the ring plate frame (44), and the ring plate frame (44) being supported and pushed by swinging to push the ring body provided on the disk frame (46).

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