Well lid locking device and using method thereof

Abstract

The invention provides a well lid locking device and a using method thereof.The well lid locking device comprises a supporting frame, a spring bolt assembly and a limiting assembly, the supporting frame is arranged at the bottom of a well lid, the spring bolt assembly is arranged on the supporting frame in a penetrating mode and elastically connected with the supporting frame, a spring bolt is arranged at one end of the spring bolt assembly, and the limiting assembly is arranged above the spring bolt assembly; the limiting assembly is elastically connected with the supporting frame, the limiting assembly is movably connected with the spring bolt assembly, and the bottom of the limiting assembly can be clamped with different positions of the spring bolt assembly, so that the spring bolt penetrates through or retreats from the well seat. The well lid has the beneficial effects that stretching and retreating of the spring bolt are achieved through pressing, the well lid and the well base can be locked, the well lid is prevented from shifting, the well lid is prevented from being opened by mistake, potential safety hazards are reduced, the structure is simple, and operation is convenient and fast.

Description

Technical Field

[0001] This invention belongs to the field of building engineering technology, and in particular relates to a manhole cover locking device and its usage method. Background Technology

[0002] Manhole covers are typically installed on inspection openings and manholes in water tanks, reservoirs, and other similar locations. In current technology, the manhole cover is usually simply placed on the manhole base without a locking device. After repeated vehicle traffic and prolonged foot traffic, the manhole cover may shift, causing various organisms to fall out and posing a safety hazard. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides a manhole cover locking device and its usage method, which effectively solves the technical problem that manhole covers are prone to displacement and pose safety hazards, and overcomes the shortcomings of the prior art.

[0004] The technical solution adopted in this invention is: a manhole cover locking device, comprising:

[0005] A support frame is installed at the bottom of the manhole cover;

[0006] A locking tongue assembly is inserted through the support frame and elastically connected to the support frame, with a locking tongue at one end;

[0007] A limiting component is disposed above the locking tongue assembly and is elastically connected to the support frame. The limiting component is movably connected to the locking tongue assembly, and the bottom of the limiting component can engage with different positions of the locking tongue assembly, allowing the locking tongue to pass through or exit the well seat.

[0008] Furthermore, the locking tongue assembly includes,

[0009] The constraint block has a locking tongue on one side, which passes through the side wall of the support frame. The bottom of the limiting component can engage with different positions of the constraint block, and the other side of the constraint block is elastically connected to the support frame.

[0010] The first link is located on the side of the constraint block away from the locking tongue, and the end of the first link away from the constraint block passes through the side wall of the support frame.

[0011] Furthermore, the top of the constraint block is provided with a path groove, and the bottom of the limiting component can engage with different positions of the path groove.

[0012] Furthermore, the path groove is configured as an eccentric structure. When the bottom of the limiting component engages with the end of the eccentric structure away from the locking tongue, the locking tongue protrudes from the well seat. When the bottom of the limiting component engages with the end of the eccentric structure near the locking tongue, the locking tongue retracts from the well seat.

[0013] Furthermore, a first positioning block is provided at the end of the first connecting rod away from the constraint block, and the first positioning block is disposed outside the support frame.

[0014] Furthermore, a first spring is mounted on the first connecting rod, with one end of the first spring connected to the constraint block and the other end connected to the side wall of the support frame.

[0015] Furthermore, the limiting component includes,

[0016] The second link passes through the support frame and is elastically connected to the support frame at both ends;

[0017] A limiting rod is disposed on the second connecting rod, and the bottom of the limiting rod is movably connected to the locking tongue assembly, and can be engaged in different positions of the locking tongue assembly.

[0018] Furthermore, the second connecting rod is provided with second positioning blocks at both ends, and the second positioning blocks are located outside the support frame.

[0019] Furthermore, a second spring is provided between the second positioning block and the support frame.

[0020] The present invention also provides a method of using the manhole cover locking device as described above, comprising the following steps:

[0021] The support frame is fixed to the bottom of the manhole cover;

[0022] The bottom of the limiting component engages with the first position of the locking tongue component, the locking tongue passes through the well seat, and the lock body locks the well cover.

[0023] Pressing the locking tongue engages the bottom of the limiting component with the second position of the locking tongue component, causing the locking tongue to disengage from the manhole cover and the manhole cover to open.

[0024] The advantages and positive effects of this invention are as follows: by adopting the above technical solution, the extension and retraction of the locking tongue are achieved by pressing, which can lock the manhole cover and the manhole seat, prevent the manhole cover from shifting, avoid accidentally opening the manhole cover, reduce safety hazards, and has a simple structure and is easy to operate. Attached Figure Description

[0025] The above and other objects, features, and advantages of the present invention will become more apparent from the more detailed description of the embodiments of the invention in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same parts or steps.

[0026] Figure 1 This is a schematic diagram of the installation of a manhole cover locking device according to an embodiment of the present invention.

[0027] Figure 2 This is an installation cross-sectional view of a manhole cover locking device according to an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the support frame of a manhole cover locking device according to an embodiment of the present invention.

[0029] Figure 4 This is a top view of the locked state of a manhole cover locking device according to an embodiment of the present invention.

[0030] Figure 5 This is a diagram showing the positional relationship between the limiting rod and the path groove in the locked state of a manhole cover locking device according to an embodiment of the present invention.

[0031] Figure 6 This is a top view of the open state of a manhole cover locking device according to an embodiment of the present invention.

[0032] Figure 7 This is a diagram showing the positional relationship between the limiting rod and the path groove in the open state of a manhole cover locking device according to an embodiment of the present invention.

[0033] Figure 8 This is a top view of the first connecting rod connection of a manhole cover locking device according to an embodiment of the present invention.

[0034] Figure 9 This is a side view of the first connecting rod connection of a manhole cover locking device according to an embodiment of the present invention.

[0035] Figure 10 This is a schematic diagram of the second connecting rod of a manhole cover locking device according to an embodiment of the present invention.

[0036] In the diagram: 10, Support frame; 11, First through hole; 12, Second through hole; 13, Third through hole; 20, Locking tongue assembly; 21, Locking tongue; 22, Hanging hole; 23, Constraint block; 24, Path groove; 25, Protrusion; 26, First connecting rod; 27, First positioning block; 28, First spring; 30, Restriction assembly; 31, Second connecting rod; 32, Restriction rod; 33, Second positioning block; 34, Second spring; 40, Manhole cover; 50, Manhole base. Detailed Implementation

[0037] This invention provides a manhole cover locking device and its usage method. The embodiments of this invention will be described below with reference to the accompanying drawings.

[0038] In the description of the embodiments of this invention, it should be understood that the terms "top," "bottom," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "set" and "connected" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention through specific circumstances.

[0039] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a manhole cover locking device, including a support frame 10, a locking tongue assembly 20, and a limiting assembly 30. The support frame 10 is disposed at the bottom of the manhole cover 40. The locking tongue assembly 20 passes through the support frame 10 and is elastically connected to the support frame 10, with a locking tongue 21 at one end, which extends out of the support frame 10 and can reciprocate. The limiting assembly 30 is disposed above the locking tongue assembly 20 and is elastically connected to the support frame 10, allowing the limiting assembly 30 to reciprocate. The limiting assembly 30 is movably connected to the locking tongue assembly 20, and the bottom of the limiting assembly 30 can engage with different positions of the locking tongue assembly 20, allowing the locking tongue 21 to pass through or exit the manhole seat 50. When the locking tongue 21 passes through the manhole seat 50, it can be locked using a lock body. By opening the lock body and pressing the locking tongue 21, the locking tongue 21 can be disengaged from the manhole seat 50, thereby opening the manhole cover 40. In this embodiment, as... Figure 3 As shown, the support frame 10 is a quadrilateral frame structure, consisting of four side walls fixedly connected together. The tops of the four side walls are fixedly connected to the bottom of the manhole cover 40. The locking tongue assembly 20 passes through two opposite side walls, and the restraining assembly 30 passes through the other two opposite side walls. The side walls are made of Q235B steel plate with a thickness of 3mm, and adjacent side walls are fixed by welding.

[0040] Specifically, such as Figure 4 , Figure 6 , Figure 8 and Figure 9As shown, the latch assembly 20 includes a constraint block 23 and a first connecting rod 26. A latch 21 is provided on one side of the constraint block 23, passing through the side wall of the support frame 10. The other side of the constraint block 23 is elastically connected to the support frame 10, allowing the bottom of the restraining assembly 30 to engage with the constraint block 23 at different positions. The first connecting rod 26 is located on the side of the constraint block 23 away from the latch 21, with one end of the first connecting rod 26 passing through the side wall of the support frame 10. In this embodiment, the constraint block 23 is a horizontally placed quadrilateral block, with the latch 21 fixed on one side. The latch 21 is made of Q235B steel plate with a thickness of 3mm. A hanging hole 22 is provided at the end of the latch 21 away from the constraint block 23 for padlocking. A first through hole 11 is provided on the side wall of the support frame 10 at a position opposite to the latch 21, with the latch 21 passing through the first through hole 11 in a clearance fit. One end of the first connecting rod 26 is fixedly connected to the side of the constraint block 23 away from the locking tongue 21, and the other end passes through the side wall of the support frame 10. A second through hole 12 is provided on the side wall of the support frame 10 at a position opposite to the first connecting rod 26. The first connecting rod 26 passes through the second through hole 12 and is clearance-fitted with the second through hole 12. The side of the constraint block 23 away from the locking tongue 21 is elastically connected to the side of the support frame 10 through which the first connecting rod 26 passes.

[0041] Specifically, such as Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a path groove 24 is provided at the top of the constraint block 23, and the bottom of the limiting component 30 can engage with different positions of the path groove 24. To prevent the limiting component 30 from disengaging from the path groove 24, the path groove 24 has a certain depth. In this embodiment, the depth of the path groove 24 is set to 15mm, and the width is set to 12mm.

[0042] In this embodiment, the path slot 24 is configured as an eccentric structure, such as... Figure 4 and Figure 5 As shown, under no external force, the bottom of the limiting component 30 engages with the end of the eccentric structure away from the locking tongue 21, and the locking tongue 21 protrudes from the well seat 50. Pressing the locking tongue 21 engages the bottom of the limiting component 30 with the end of the eccentric structure near the locking tongue 21, and the locking tongue 21 retracts from the well seat 50. A protrusion 25 is provided on the groove wall of the path groove 24 near the locking tongue 21. (The text abruptly ends here.) Figure 6 and Figure 7As shown, when the latch 21 is pressed, the constraint block 23 moves toward the side where the first connecting rod 26 is located. The bottom of the limiting component 30 slides along the path groove 24 to the protrusion 25 and engages with the protrusion 25. At this time, the latch 21 exits the well seat 50 and disengages from the well seat 50, allowing the well cover 40 to open. Pressing the latch 21 causes the constraint block 23 to continue moving toward the side where the first connecting rod 26 is located. The bottom of the limiting component 30 passes over the protrusion 25. Without the engagement of the protrusion 25, the constraint block 23 springs back to its original position, causing the bottom of the limiting component 30 to slide to the center axis position of the end of the path groove 24 away from the latch 21. At this time, the latch 21 extends out of the base and can be locked with a padlock.

[0043] Specifically, a first positioning block 27 is provided at the end of the first connecting rod 26 away from the constraint block 23, and the first positioning block 27 is located outside the support frame 10. By providing the first positioning block 27, the first connecting rod 26 can be prevented from detaching from the support frame 10. In this embodiment, the end of the first connecting rod 26 away from the constraint block 23 is provided with a thread, and the first positioning block 27 is configured as a nut that is threadedly connected to the first connecting rod 26.

[0044] Specifically, a first spring 28 is mounted on the first connecting rod 26. One end of the first spring 28 is connected to the constraint block 23, and the other end is connected to the side wall of the support frame 10. By setting the first spring 28, the constraint block 23 is elastically connected to the support frame 10. When the latch 21 is pressed, the first spring 28 contracts, and the bottom of the limiting component 30 slides along the path groove 24 to the protrusion 25 and engages with the protrusion 25. At this time, the latch 21 exits the well seat 50. Pressing the latch 21 further compresses the first spring 28, causing the bottom of the limiting component 30 to pass over the protrusion 25. After the bottom of the limiting component 30 passes over the protrusion 25, the first spring 28 rebounds, causing the constraint block 23 to move toward the side where the latch 21 is located. When the bottom of the limiting component 30 slides along the path groove 24 to the center axis position of the end of the path groove 24 away from the latch 21, the latch 21 extends out of the well seat 50 and can be padlocked.

[0045] Specifically, such as Figure 9As shown, the limiting component 30 includes a second connecting rod 31 and a limiting rod 32. The second connecting rod 31 passes through the support frame 10, and its two ends are elastically connected to the support frame 10. The limiting rod 32 is disposed on the second connecting rod 31, and its bottom is movably connected to the latch assembly 20, and can be engaged at different positions of the latch assembly 20. In this embodiment, a third through hole 13 is provided opposite to each other on the two side walls of the support frame 10 that are not connected to the latch assembly 20. The second connecting rod 31 passes through the third through hole 13 and is clearance-fitted with the third through hole 13. The second connecting rod 31 is elastically connected to the two side walls, so that the second connecting rod 31 can reciprocate perpendicularly to the first connecting rod 26. The limiting rod 32 is vertically disposed, its top is fixedly connected to the middle of the second connecting rod 31, and its bottom is slidably connected to the path groove 24 of the latch assembly 20. When the constraint block 23 reciprocates, the bottom of the limiting rod 32 slides along the path groove 24 and engages with the path groove 24, limiting the path groove 24.

[0046] Specifically, the second connecting rod 31 has second positioning blocks 33 at both ends, and the second positioning blocks 33 are disposed outside the support frame 10. By setting the second positioning blocks 33, the second connecting rod 31 can be prevented from detaching from the support frame 10. In this embodiment, the second connecting rod 31 has threads at both ends, and the second positioning blocks 33 are set as nuts and are threadedly connected to the second connecting rod 31.

[0047] Specifically, a second spring 34 is provided between the second positioning block 33 and the support frame 10. The second spring 34 passes through the second connecting rod 31, with one end connected to the second positioning block 33 and the other end connected to the outside of the side wall of the support frame 10. The second spring 34 is symmetrically arranged at both ends of the second connecting rod 31. When the bottom of the limiting rod 32 passes the protrusion 25, the first spring 28 rebounds, causing the constraint block 23 to move towards the side where the locking tongue 21 is located. Under the action of the second spring 34, the bottom of the limiting rod 32 slides along the path groove 24 to the central axis position of the end of the path groove 24 away from the locking tongue 21.

[0048] A method of using a manhole cover locking device as described above includes the following steps:

[0049] After the entire device is assembled, the support frame 10 is placed at the bottom of the manhole cover 40, and the top of the side wall of the support frame 10 is fixedly connected to the bottom of the manhole cover 40 by welding or riveting. Press the locking tongue 21, so that the bottom of the limiting rod 32 slides along the path groove 24 to the protrusion 25 and engages with the protrusion 25. At this time, the first spring 28 and the locking tongue 21 are in the retracted state, covering the manhole cover 40 on the manhole seat 50.

[0050] like Figure 4As shown, when the locking tongue 21 is pressed, the limiting rod 32 passes over the protrusion 25 of the path groove 24. Under the rebound action of the first spring 28, the constraint block 23 moves toward the side where the locking tongue 21 is located. When the bottom of the limiting rod 32 slides along the path groove 24 to the center axis position of the end of the path groove 24 away from the locking tongue 21, i.e., the first position, it engages with the path groove 24. At this time, the locking tongue 21 extends outward and passes through the well seat 50. The well cover 40 can be locked by using a padlock.

[0051] like Figure 6 As shown, when it is necessary to open the manhole cover 40, remove the lock body, press the lock tongue 21, and the bottom of the limiting rod 32 slides along the path groove 24 to the protrusion 25, i.e., the second position, and engages with the protrusion 25. At this time, the lock tongue 21 is disengaged from the manhole seat 50, and the manhole cover 40 can be opened.

[0052] The advantages and positive effects of this invention are:

[0053] The locking tongue can be extended and retracted by pressing, which can lock the manhole cover and the manhole seat, prevent the manhole cover from shifting, avoid accidentally opening the manhole cover, reduce safety hazards, and has a simple structure and is easy to operate.

[0054] The embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. It should be noted that implementations not illustrated or described in the drawings or the main text of the specification are forms known to those skilled in the art and have not been described in detail. Furthermore, the definitions of the various components described above are not limited to the specific structures, shapes, or methods mentioned in the embodiments, and those skilled in the art can easily modify or substitute them.

[0055] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made in accordance with the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A well lid locking device, characterized in that, The utility model relates to a locking device of manhole cover, including: Support frame, set up in the bottom of manhole cover; Lock tongue assembly, pass in the support frame with the elastic connection of support frame, one end is equipped with lock tongue; Limiting component, set up above lock tongue assembly with the elastic connection of support frame, limiting component with lock tongue assembly activity is connected, the bottom of limiting component can be with the different position of lock tongue assembly clamping, make lock tongue pass through or exit well seat.

2. A device as claimed in claim 1, wherein: The utility model relates to a locking device of manhole cover, including: Restraint block, one side is equipped with lock tongue, lock tongue passes in the lateral wall of support frame, the bottom of limiting component can be with the different position of restraint block clamping, the other side of restraint block is connected with the elastic connection of support frame; First connecting rod, set up in the side of restraint block away from lock tongue, one end of first connecting rod away from restraint block passes in the lateral wall of support frame.

3. A device as claimed in claim 2, wherein: The top of restraint block is equipped with path groove, the bottom of limiting component can be with the different position of path groove clamping.

4. A device as claimed in claim 3, wherein: The path groove sets up as eccentric structure, when the bottom of limiting component is clamped with the end of eccentric structure away from lock tongue, lock tongue passes out well seat, when the bottom of limiting component is clamped with the end of eccentric structure close to lock tongue, lock tongue exits well seat.

5. A device as claimed in any one of claims 2 to 4, wherein: One end of first connecting rod away from restraint block is equipped with first positioning block, and first positioning block sets up outside support frame.

6. A device as claimed in any one of claims 2 to 4, wherein: First spring is passed in first connecting rod, one end of first spring is connected with restraint block, and the other end is connected with the lateral wall of support frame.

7. A device as claimed in any one of claims 1 to 4, wherein: The utility model relates to a locking device of manhole cover, including: Second connecting rod, pass in the support frame, both ends are connected with the elastic connection of support frame; Limiting rod, set up in second connecting rod, the bottom of limiting rod is connected with lock tongue assembly activity, can be clamped in the different position of lock tongue assembly.

8. A device as claimed in claim 7, wherein: Both ends of second connecting rod are equipped with second positioning block, and second positioning block sets up outside support frame.

9. A device as claimed in claim 8, wherein: Second spring is equipped between second positioning block and support frame.

10. A method of using a pit lid locking device as claimed in claim 1, characterized in that, The utility model relates to a locking device of manhole cover, including: Fix the support frame in the bottom of manhole cover; The bottom of limiting component is clamped with the first position of lock tongue assembly, and lock tongue passes through well seat, adopts lock body to lock manhole cover; Press lock tongue, make the bottom of limiting component with the second position of lock tongue assembly clamping, lock tongue exits well seat, and manhole cover opens.

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