A locking device for a ganged manhole cover

Abstract

The present invention discloses a locking device for a row of manhole cover plates, which is used for self-locking protection of manhole covers, and comprises a manhole wall seat and at least one manhole cover plate, and one or more manhole cover plates seal the manhole opening; a bolt seat is fixedly connected to the lower side of each manhole cover plate, and a bolt column is provided at the end of the bolt seat; guide rail mechanisms are respectively provided on the lower side of the manhole cover plate on both sides of the wellhead of the manhole wall seat, and a locking frame of the guide rail mechanism on each side is provided with a plurality of limit stops and clearance openings that respectively cooperate with and avoid the latch pins of the bolt column; a toggle assembly is also provided at the end of the guide rail mechanism on each side, which is driven by an external force to toggle the latch pin of the locking frame to lock it on the bolt column; an intelligent lock is also provided on the lower side of the manhole cover plate corresponding to the toggle assembly, and the intelligent lock is driven and connected to a linkage pin tightening mechanism with two end synchronous latches which are sleeved on the locking frame of the guide rail mechanisms on both sides of the wellhead, and is used for all the bolt latches on the locking frame to lock the bolt seats on the lower side of each manhole cover plate to prevent the locking frame from being displaced and unlocked.

Description

[Technical field]

[0001] The invention relates to urban facility management technology, and in particular to a locking device for a row of manhole cover plates. [Background technology]

[0002] With the development of urban infrastructure, there are more and more urban wells in various industries such as rainwater, sewage, telecommunications, electricity, and gas. Road manhole covers have become an important part of urban infrastructure. At present, there are many kinds of composite manhole covers in urban engineering construction. During the installation process, the manhole covers are placed on the manhole cover base. In order to facilitate maintenance, they are generally separated into two layers.

[0003] However, existing manhole covers are difficult to self-lock during use, and the anti-theft effect is poor. The manhole covers may become loose, damaged, opened or stolen during use. If engineering personnel are unable to perform maintenance in a timely manner, the manhole covers installed in designated locations may not function. Therefore, there is an urgent need for a municipal drainage manhole cover installation structure with a self-locking function to effectively monitor and manage the status of the manhole cover and promptly discover safety hazards in the well. [Summary of the invention]

[0004] The invention provides a locking device for a linked manhole cover plate, which improves the safety performance of a well, is convenient to control, and the manhole cover plate has a self-locking function, thereby preventing the manhole cover plate from being opened arbitrarily.

[0005] The technical solution adopted by the embodiment of the present invention to solve the technical problem is:

[0006] The embodiment of the present invention provides a locking device for a row of manhole cover plates, which is used for self-locking protection of manhole covers, and comprises a manhole wall seat and at least one manhole cover plate, wherein the manhole wall seat is installed in a well, and the top surface is arranged flush with the road surface;

[0007] The top of the well seat is provided with a well opening symmetrically arranged on both sides and in a stepped shape. One or more well cover plates are arranged in parallel, and the two ends are respectively supported by the stepped grooves at the two ends of the well opening on the well seat, and are used to cover and seal the entire well opening;

[0008] A locking bolt seat is fixedly connected to the lower side of each manhole cover plate, and the end of the locking bolt seat extends horizontally and is connected to a locking bolt column that is locked with a latch pin.

[0009] The two sides of the wellhead of the well seat are respectively provided with guide rail mechanisms located at the lower side of all the well cover plates, and the locking frame of the guide rail mechanism on each side is provided with a plurality of limit stoppers respectively matched with the locking bolt columns on the locking bolt seats at the lower side of each well cover plate and a clearance opening for the locking bolt columns to make way for lifting the well cover plate;

[0010] The end of each side guide mechanism is also provided with a toggle assembly which, under the drive of external force, toggles the locking frame, drives the upper limit stopper of the locking frame to slide and transversely move the latch pin on the lock bolt column to lock or disengage from the lock bolt column to unlock, and the manhole cover plate corresponding to the toggle assembly is also provided with a toggle hole for facilitating the insertion of foreign objects to drive it to rotate;

[0011] A smart lock is also provided on the lower side of the manhole cover plate corresponding to the toggle assembly, and a key hole is provided on the manhole cover plate corresponding to the smart lock for easy key insertion;

[0012] The smart lock drive is connected to a linkage pin tightening mechanism with two end synchronous pins sleeved on the locking frame of the guide rail mechanism on both sides of the wellhead, which is used to lock the locking frame and all the lock bolt column pins to lock the lower side of each well cover plate to prevent the locking frame from displacing and unlocking.

[0013] Furthermore, the guide rail mechanism includes a well wall plate and a straight-strip locking frame, the well wall plate is located on the lower side of the well cover plate and is tightly fixed on the side wall of the wellhead on the well wall seat, a plurality of guide columns perpendicular to the wall surface of the plate body are arranged on the well wall plate, the locking frame slides against the side of the well wall plate, a plurality of sliding groove holes are provided on the locking frame for cooperating with the guide column sliding sleeves on the well wall plate, the locking frame is also provided with a limit stopper for limiting and blocking the locking bolt column after positive lateral movement and a making way opening for giving way to the locking bolt column after reverse lateral movement and for lifting the well cover plate, the limit stopper and the making way opening are arranged adjacent to each other.

[0014] Furthermore, the guide column is also provided with a rolling sleeve which is rollingly matched with the sliding slot hole on the locking frame.

[0015] Furthermore, the toggle assembly includes a toggle hole shaft, a toggle cam and a return spring. The toggle hole shaft is rotatably mounted in the toggle hole on the manhole cover, the toggle cam is installed at the bottom end of the toggle hole shaft, the return spring is clamped between the locking frame and the side wall of the manhole wall seat, and pushes all the yield openings on the locking frame to yield to the lock bolt column. The locking frame is also provided with a stop plate extending outward and contacting with the toggle cam. Under the drive of external force, the toggle hole shaft and the toggle cam overcome the elastic force of the return spring, the toggle cam contacts the stop plate, and drives the upper limit stop of the locking frame to slide and move the pin horizontally on the lock bolt column through the stop plate to lock the manhole cover.

[0016] Furthermore, the linkage pin tightening mechanism includes two rotating swing arms, two latch locking shafts and two guide kits, which are respectively installed at the two ends of the lower side of the manhole cover plate, and the two latch locking shafts are respectively slidably inserted into the guide kits at both ends of the manhole cover plate, and the top ends are respectively latched and connected to the locking holes set in the locking frames on both sides of the wellhead. One end of the two rotating swing arms is hinged to the lower side of the smart lock, and the other ends of the two rotating swing arms are respectively hinged to the two latch locking shafts. The two rotating swing arms drive the two latch locking shafts under the drive of the smart lock, and are guided by the sliding guide of the guide kit to rotate forward to pull out the locking holes on the locking frame to unlock and reverse the latch to the locking holes on the locking frame to lock.

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

[0018] The present invention aims to solve the problem that the manhole covers arranged on the city pipes can be opened arbitrarily by anyone. A smart lock which can be opened after authorization is arranged on the manhole cover. The unlocking tool drives the linkage pin tightening mechanism through the smart lock to release the transverse sliding lock of the locking frame. The reset spring on the toggle assembly automatically pushes the locking frame on the guide rail mechanism to slide to the initial position. The locking bolt columns on all the manhole covers are at the yield openings of the locking frames, and all the manhole covers can be lifted up and opened.

[0019] When all the manhole covers are sealed at the wellhead, the unlocking tool drives the limit stop of the locking frame to slide to the locking column on the locking bolt seat through the toggle assembly, and the unlocking tool then drives the linkage pin locking mechanism through the intelligent lock to lock the locking frame horizontally. External force cannot open all the manhole covers, so that the manhole covers have a self-locking function to prevent the manhole covers from being opened at will.

[0020] Moreover, the manhole cover is made of composite materials, which can reduce the thickness of the cover while meeting the strength requirements and effectively reduce the workload of maintenance personnel.

Brief Description of the Drawings

[0021] Figure 1 is a schematic diagram of an exploded three-dimensional structure of an embodiment of the present invention;

[0022] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0023] Figure 3 It is an enlarged schematic diagram of the assembly structure on the lower side of the manhole cover plate in an embodiment of the present invention;

[0024] Figure 4 yes Figure 3 The enlarged structural diagram of the middle B part;

[0025] Figure 5 is a schematic cross-sectional structural diagram of an embodiment of the present invention;

[0026] Figure 6 is a bottom-up perspective structural diagram of an embodiment of the present invention;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention. [Specific implementation method]

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings 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 in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. The words "including" and similar words used in this article mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] The locking device provided in the embodiment of the present invention will now be described with reference to the accompanying drawings.

[0031] A locking device for a ganged manhole cover, such as Figures 1 to 7 As shown, the self-locking protection for the manhole cover comprises a manhole wall seat 1 and four manhole cover plates 2 arranged side by side. The manhole wall seat 1 is installed in the shaft, and the top surface is arranged flush with the road surface. A manhole 3 with stepped openings and symmetrically arranged on both sides is opened at the top of the manhole wall seat 1. After the four manhole cover plates 2 are arranged side by side, the two ends are respectively supported by the stepped grooves 30 at the two ends of the manhole cover 3 on the manhole wall seat 1, and are used to seal the entire manhole 3; a locking bolt seat 4 is fixedly connected to the lower side of each manhole cover plate 2, and a locking bolt column 5 is extended and connected in the horizontal direction at the end of the locking bolt seat 4, and is used to lock the manhole cover plate 2 with a pin.

[0032] Continue as Figures 1 to 7As shown, guide rail mechanisms 6 located at the lower sides of all manhole cover plates 2 are respectively provided on both sides of the wellhead 3 of the well wall seat 1, and four limit stoppers 610 respectively matched with the lock bolt column 5 on the lock bolt seat 4 at the lower side of each manhole cover plate 2 and four make way openings 611 respectively making way for the lock bolt column 5 for lifting the manhole cover plate 2 are provided on the locking frame 61 of each side of the guide rail mechanism 6; at the end of each side of the guide rail mechanism 6, there is also a locking frame 61 driven by an external force to slide the upper limit stopper 610 of the locking frame 61 to slide the latch pin on the lock bolt column 5 to lock or release the lock bolt column 5 to unlock. A toggle assembly 7 is provided, and a toggle hole 20 is provided on the manhole cover plate 2 corresponding to the toggle assembly 7 for facilitating the insertion of foreign objects to drive the manhole cover plate 2 to rotate; a smart lock 8 is provided on the lower side of the manhole cover plate 2 corresponding to the toggle assembly 7, and a key hole 21 is provided on the manhole cover plate 2 corresponding to the smart lock 8 for facilitating the insertion of a key; the smart lock 8 is driven and connected to a locking frame 61 with synchronous pins at both ends that are sleeved on the guide rail mechanism 6 on both sides of the wellhead 3, and a linkage pin tightening mechanism 9 is used for locking the locking frame 61 and all the lock bolt columns 5 to lock the lower side of each manhole cover plate 2 to prevent the locking frame 61 from shifting and unlocking.

[0033] As shown in Figure 1 to Figure 6 As shown, the guide rail mechanism 6 includes a well wall plate 60 and a straight locking frame 61. The well wall plate 60 is located on the lower side of the well cover 2 and is tightly fixed on the side wall of the wellhead 3 on the well wall seat 1. A plurality of guide columns 62 perpendicular to the wall of the plate body are arranged on the well wall plate 60. The locking frame 61 slides against the side of the well wall plate 60. A plurality of sliding groove holes 612 are provided on the locking frame 61 for cooperating with the sliding sleeves of the guide columns 62 on the well wall plate 60. The guide columns 62 are also provided with rolling sleeves 63 for rolling cooperation with the sliding groove holes 612 on the locking frame 61. The corresponding locking frame 61 is also provided with a limit stop 610 for limiting and blocking the locking bolt column 5 after positive lateral movement and a clearance opening 611 for giving way to the locking bolt column 5 after reverse lateral movement and for lifting the well cover 2. The limit stop 610 and the clearance opening 611 are arranged adjacent to each other.

[0034] like Figures 1 to 7 As shown, the toggle assembly 7 includes a toggle hole shaft 70, a toggle cam 71 and a return spring 72. The toggle hole shaft 70 is rotatably mounted in the toggle hole 20 on the manhole cover plate 2, and the toggle cam 71 is installed at the bottom end of the toggle hole shaft 70. The return spring 72 is clamped between the locking frame 61 and the well wall plate 60 on the side wall of the well wall seat 1, and pushes all the yielding openings 611 on the locking frame 61 to yield to the lock bolt column 5. A stopper sheet 73 is also extended outward on the locking frame 61 and contacts the toggle cam 71. When the toggle hole shaft 70 and the toggle cam 71 overcome the elastic force of the return spring 72 under the drive of external force, the toggle cam 71 contacts the stopper sheet 73, and drives the upper limit stopper 610 of the locking frame 61 to slide and move the pin horizontally on the lock bolt column 5 to lock the manhole cover plate 2 through the stopper sheet 73.

[0035] like Figures 1 to 6 As shown, the linkage pin tightening mechanism 9 includes two rotating swing arms 90, two latch locking shafts 91 and two guide kits 92. The two guide kits 92 are respectively installed at the two ends of the lower side of the manhole cover 2, and the two latch locking shafts 91 are respectively slidably inserted into the guide kits 92 at the two ends of the manhole cover 2, and the top ends are respectively latched and connected to the locking holes 613 set in the locking frames 61 on both sides of the wellhead 3, so as to limit the movement of the locking frames 61; one end of the two rotating swing arms 90 is hinged to the lower side of the smart lock 8, and the other ends of the two rotating swing arms 90 are respectively hinged to the two latch locking shafts 91, and the two rotating swing arms 90 drive the two latch locking shafts 91 under the drive of the smart lock 8, and are slidably guided by the guide kit 92, and rotate forward to pull out the locking hole 613 on the locking frame 61 to unlock and reverse the latch to the locking hole 613 on the locking frame 61 to lock.

[0036] When in use, among the four manhole cover plates 2 arranged in a row, the smart lock 8 is installed on the lower side of the rear manhole cover plate 2, and the other cover plates are equipped with fixed and immovable lock bolt seats 4. A toggle cam 71 is also installed on the lower side of the rear manhole cover plate 2, which is used to toggle the locking frame 61 to the locked position. The two ends of the smart lock 8 are connected to a movable latch locking shaft 91, which can be latched or retracted after authorization by the smart lock 8. When latched, it is used to limit the horizontal sliding of the locking frame 61, so as to lock and fix the manhole cover plate 2 to prevent it from being lifted arbitrarily.

[0037] When the manhole cover 2 is locked, the locking frame 61, under the action of the reset spring 72 on the toggle assembly 7, pushes all the make way openings 611 on the locking frame 61 to make way for the lock bolt column 5 and is in the initial position. At this time, the manhole cover 2 is inserted in sequence, and finally the manhole cover 2 with the smart lock 8 at the tail is inserted. Then, the unlocking tool is used to toggle the locking frames 61 at both ends of the well wall to the locked position through the toggle assembly 7. At this time, the smart lock 8 is rotated, thereby driving the latch locking shaft 91 to be inserted into the corresponding hole on the locking frame 61, so that the locking frame 61 locks the lock bolt columns 5 on other manhole cover plates 2 to play a locking role.

[0038] When the manhole cover 2 needs to be opened, the authorized smart lock 8 is opened, the unlocking tool is inserted, and the smart lock 8 is rotated, thereby driving the latch locking shaft 91 to be pulled out of the corresponding hole on the locking frame 61; then, the unlocking tool is inserted into the toggle hole shaft 70 of the toggle assembly 7, and the toggle cam 71 is rotated, so that the locking frame 61 returns to the initial position under the action of the reset spring 72, so that the limit stop 610 on the locking frame 61 is disengaged from the lock bolt column 5 on the manhole cover 2, and at the same time, the lock bolt column 5 is facing the yield opening 611 on the locking frame 61, so that any manhole cover 2 can be opened.

[0039] The above-described embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. All equivalent changes made based on the shape, structure and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A locking device for a ganged manhole cover, used for self-locking protection of the manhole cover, characterized in that: It includes a well wall seat and at least one well cover plate, wherein the well wall seat is installed in the well, and the top surface is flush with the road surface; The top of the well seat is provided with a well opening symmetrically arranged on both sides and in a stepped shape. One or more well cover plates are arranged in parallel, and the two ends are respectively supported by the stepped grooves at the two ends of the well opening on the well seat, and are used to cover and seal the entire well opening; A locking bolt seat is fixedly connected to the lower side of each manhole cover plate, and a locking bolt column is connected to the end of the locking bolt seat extending in the horizontal direction and locking the manhole cover plate with a latch; The two sides of the wellhead of the well seat are respectively provided with guide rail mechanisms located at the lower side of all the well cover plates, and the locking frame of the guide rail mechanism on each side is provided with a plurality of limit stoppers respectively matched with the locking bolt columns on the locking bolt seats at the lower side of each well cover plate and a clearance opening for the locking bolt columns to make way for lifting the well cover plate; The end of each side guide mechanism is also provided with a toggle assembly which, under the drive of external force, toggles the locking frame, drives the upper limit stopper of the locking frame to slide and transversely move the latch pin on the lock bolt column to lock or disengage from the lock bolt column to unlock, and the manhole cover plate corresponding to the toggle assembly is also provided with a toggle hole for facilitating the insertion of foreign objects to drive it to rotate; A smart lock is also provided on the lower side of the manhole cover plate corresponding to the toggle assembly, and a key hole is provided on the manhole cover plate corresponding to the smart lock for easy key insertion; The smart lock drive is connected to a linkage pin tightening mechanism with two synchronous pins at both ends that are sleeved on the locking frame of the guide rail mechanism on both sides of the wellhead, and is used to lock the locking frame and all the lock bolt column pins to lock the lower side of each well cover plate to prevent the locking frame from shifting and unlocking; The guide rail mechanism includes a well wall plate and a straight strip-shaped locking frame, the well wall plate is located at the lower side of the well cover plate and is tightly fixed on the side wall of the wellhead on the well wall seat, a plurality of guide posts perpendicular to the wall surface of the plate body are arranged on the well wall plate, the locking frame slides against the side of the well wall plate, a plurality of sliding slot holes are provided on the locking frame that cooperate with the guide post sliding sleeves on the well wall plate, the locking frame is also provided with a limit stopper for limiting and blocking the lock bolt column after positive lateral movement and a clearance opening for giving way to the lock bolt column after reverse lateral movement and for lifting the well cover plate, the limit stopper and the clearance opening are arranged adjacent to each other; The toggle assembly includes a toggle hole shaft, a toggle cam and a return spring, the toggle hole shaft is rotatably sleeved in the toggle hole on the manhole cover, the toggle cam is installed at the bottom end of the toggle hole shaft, the return spring is clamped between the locking frame and the side wall of the manhole wall seat, and pushes all the yield openings on the locking frame to yield to the lock bolt column, and the locking frame is also provided with a stop plate extending outward and contacting with the toggle cam. Under the drive of external force, the toggle hole shaft and the toggle cam overcome the elastic force of the return spring, the toggle cam contacts the stop plate and drives the upper limit stop of the locking frame to slide and move the pin horizontally on the lock bolt column to lock the manhole cover.

2. A locking device for a ganged manhole cover according to claim 1, characterized in that: The guide column is also provided with a rolling sleeve which is rollingly matched with the sliding slot hole on the locking frame.

3. The locking device for the manhole cover according to claim 1, characterized in that: The linkage pin tightening mechanism includes two rotating swing arms, two latch locking shafts and two guide kits, which are respectively installed at the two ends of the lower side of the manhole cover plate. The two latch locking shafts are respectively slidably inserted into the guide kits at both ends of the manhole cover plate, and the top ends are respectively latched and connected to the locking holes set in the locking frames on both sides of the wellhead. One end of the two rotating swing arms is hinged to the lower side of the smart lock, and the other ends of the two rotating swing arms are respectively hinged to the two latch locking shafts. The two rotating swing arms drive the two latch locking shafts under the drive of the smart lock, and are guided by the sliding guide of the guide kit to rotate forward to pull out the locking holes on the locking frame to unlock and reverse the latch to lock it in the locking holes on the locking frame.

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