Manhole cover fixing mechanism

Abstract

The invention discloses an inspection well lid fixing mechanism, which is applied in a well lid and a well lid seat, and comprises a plurality of groups of placement parts arranged in the well lid seat; the supporting assembly is arranged at the bottom of the well lid and corresponds to the placement part; a fixing hole is formed in the placement part; the supporting assembly comprises a placement plate and a locking ring; a locking deflector rod is hinged to the interior of the placement plate, one end of the locking deflector rod is provided with a locking hook corresponding to the fixing hole, and the other end of the locking deflector rod is provided with a hinge piece connected with the locking ring. According to the manhole cover fixing mechanism, the manhole cover is rapidly locked and unlocked through cooperation of the locking shifting rod and the fixing hole, different installation requirements are met through the supporting assembly with the adjustable height, the operation convenience is improved through combination of the reset torsional spring and the unlocking mechanism, and the manhole cover fixing mechanism is convenient to use and high in practicability. The manhole cover has the advantages that the connection stability between the manhole cover and the manhole cover seat is improved, the manhole cover is prevented from displacing or jumping open due to water pressure or external force, and the service life of the manhole cover is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of manhole cover structures, and in particular to a fixing mechanism for a manhole cover of an inspection well. Background Art

[0002] A large number of inspection wells are distributed on the urban road surface. When problems such as manhole cover collapse, damage, cracking and collapse of the road surface around the manhole cover occur in the inspection well and the manhole cover, it brings potential safety hazards to the normal road traffic, causes damage to the facilities under the manhole cover, affects the normal life of urban residents, and serious manhole cover damage even causes traffic accidents, threatening people's lives and property safety.

[0003] The existing construction methods cannot accurately control the height difference of the manhole cover. After measurement, the height difference of the manhole cover is prone to deviation during construction, and the poured concrete fails to meet the strength requirements, easily leading to subsidence and cracking of the manhole cover and the surrounding road surface. Moreover, due to the large height difference in the inspection well for the existing manhole cover, under the condition of large water pressure, the inspection well is easily bounced open. Therefore, a fixing mechanism for a manhole cover of an inspection well is proposed to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a fixing mechanism for a manhole cover of an inspection well aiming at the above deficiencies at present, which has the advantages of improving the connection stability between the manhole cover and the manhole cover seat, preventing the manhole cover from shifting or bouncing open due to water pressure or external force, and extending the service life of the manhole cover.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions: A fixing mechanism for a manhole cover of an inspection well, which is applied inside the manhole cover and the manhole cover seat, includes:

[0006] Multiple groups of placement parts opened in the manhole cover seat;

[0007] Support components arranged at the bottom of the manhole cover and corresponding to the placement parts;

[0008] Fixing holes are arranged inside the placement parts;

[0009] The support component includes a placement plate and a locking ring;

[0010] A locking lever is hingedly arranged inside the placement plate. One end of the locking lever is provided with a locking hook corresponding to the fixing hole, and the other end of the locking lever is provided with a hinge member connected to the locking ring;

[0011] A receiving part is arranged at one end of the locking lever close to the hinge member;

[0012] The locking ring is lifted to drive the locking lever to be received inside the placement plate through the hinge member;

[0013] The locking ring is clamped inside the receiving part to abut against the locking lever so that the locking hook at its end is clamped in the fixing hole, fixing the manhole cover in the manhole cover seat.

[0014] Furthermore, multiple groups of the placement parts are annularly distributed in the manhole cover seat;

[0015] Each group of the placement parts consists of a plurality of placement grooves arranged at equal intervals;

[0016] The depths of the multiple placement grooves are arranged in a shallower-to-deeper manner along the circumferential direction of the manhole cover seat;

[0017] The upper support assembly of the manhole cover is inserted into the corresponding placement grooves of each group of the placement parts to adjust the height between the manhole cover and the manhole cover seat.

[0018] Furthermore, a receiving groove corresponding to the locking lever is formed in the placement plate;

[0019] An articulated rod corresponding to the locking lever is arranged in the receiving groove;

[0020] A return torsion spring is arranged on the articulated rod, and the return torsion spring makes the locking hook abut in the fixing hole.

[0021] Furthermore, the articulated part includes articulated seats respectively arranged on the inner wall of the locking ring and on the side of the locking lever away from the placement plate;

[0022] A connecting rod is arranged between the two groups of articulated seats.

[0023] Furthermore, an unlocking rod is further included, and an unlocking protrusion corresponding to the locking ring is arranged at the bottom end of the unlocking rod;

[0024] An unlocking hole is formed in the manhole cover, and the width of the unlocking hole corresponds to the unlocking rod.

[0025] Furthermore, an isolation ring is further arranged at the bottom of the manhole cover;

[0026] The inner diameter of the isolation ring is adapted to the outer diameter of the manhole cover seat;

[0027] The gap between the isolation ring and the support assembly is adapted to the thickness of the manhole cover seat.

[0028] The beneficial effects of the present invention are embodied in:

[0029] A manhole cover fixing mechanism provided by the present invention realizes the quick locking and unlocking of the manhole cover through the cooperation of the locking lever and the fixing hole, uses the support assembly with adjustable height to adapt to different installation requirements, combines the return torsion spring and the unlocking mechanism to improve the operation convenience, and has the advantages of improving the connection stability between the manhole cover and the manhole cover seat, preventing the manhole cover from being displaced or bounced open due to water pressure or external force, and extending the service life of the manhole cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a perspective view of the present invention;

[0031] Figure 2 is a schematic structural assembly view of the present invention;

[0032] Figure 3 is a schematic view of an embodiment of the present invention;

[0033] Figure 4 is a schematic view of the manhole cover structure of the present invention;

[0034] Figure 5 is a schematic view of the support assembly structure of the present invention;

[0035] Figure 6 of the present invention Figure 2 is an enlarged schematic view of the structure at A in

[0036] In the figure:

[0037] 1, manhole cover; 11, unlocking hole; 12, unlocking rod; 13, isolation ring;

[0038] 2, manhole cover seat; 21, placement part; 211, fixing hole;

[0039] 3, support assembly; 31, placement plate; 311, receiving groove; 32, locking ring; 33, locking lever; 331, locking hook; 332, hinge rod; 333, receiving part; 34, hinge member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0041] Please refer to Figures 1-6 , the present invention discloses a fixing mechanism for a manhole cover of an inspection well, which is applied inside the manhole cover 1 and the manhole cover seat 2, and includes:

[0042] multiple groups of placement parts 21 opened in the manhole cover seat 2;

[0043] A support assembly 3 is arranged at the bottom of the manhole cover 1 and corresponds to the placement portion 21. The manhole cover 1 and the manhole cover seat 2 are both annular, and the support assemblies 3 are equidistantly distributed at the bottom of the manhole cover 1 in annular shape. The number of support assemblies 3 on the manhole cover 1 corresponds to the number of placement portions 21;

[0044] The placement portion 21 is provided with a fixing hole 211;

[0045] The support assembly 3 includes a placement plate 31 and a locking ring 32;

[0046] A locking lever 33 is hingedly disposed in the placement plate 31, one end of the locking lever 33 is provided with a locking hook 331 corresponding to the fixing hole 211, and the other end of the locking lever 33 is provided with a hinge 34 connected to the locking ring 32;

[0047] The locking lever 33 is provided with a receiving portion 333 at one end close to the hinge 34;

[0048] The locking ring 32 is lifted to drive the locking lever 33 to be stored in the placement plate 31 through the hinge 34;

[0049] The locking ring 32 is engaged in the receiving portion 333 to abut against the locking lever 33 so that the locking hook 331 at its end is engaged in the fixing hole 211 to fix the manhole cover 1 in the manhole cover seat 2 .

[0050] The present application is provided with the above-mentioned structure. When in use, the axis of the manhole cover 1 is aligned with the manhole cover seat 2, and the locking ring 32 is stretched to drive the locking lever 33 to be stored in the placement plate 31, and then the placement plate 31 is inserted into the corresponding placement portion 21. After the placement is completed, the locking ring 32 can be loosened or pressed. When the locking ring 32 moves downward, the locking lever 33 is driven to tilt through the hinge 34, so that one end of the locking lever 33 with the locking hook 331 is clamped in the fixing hole 211 to achieve locking. In the subsequent use process, when the locking ring 32 is clamped in the storage portion 333, the current state of the locking lever 33 is maintained to avoid the phenomenon that the water pressure inside the manhole cover seat 2 is too high and the manhole cover 1 is not flushed open.

[0051] It is further necessary to add that, in a preferred embodiment, a plurality of groups of the placement portions 21 are distributed in a ring shape inside the manhole cover seat 2;

[0052] Each group of the placement parts 21 is composed of a plurality of placement grooves arranged at equal intervals;

[0053] The placement part refers to the stepped bearing structure arranged inside the manhole cover seat 1, which can be specifically implemented in the form of annularly arrayed grooves. The depth of the grooves gradually changes along the circumference to form a height adjustment reference plane. Preferably, the depth difference between adjacent placement grooves is five centimeters, and the number of placement grooves is preferably five groups. In the initial state, the placement plate 31 is inserted into the middle placement groove; the placement plate in the support assembly refers to a rigid bearing matrix, which can be formed by stamping a steel plate, and a storage groove is arranged inside it to accommodate the locking lever 33. The hinge structure of the locking lever 33 refers to a lever device that rotates around an axis, which can be specifically implemented by an articulated pin with a torsion spring to achieve automatic reset and locking state. The locking ring 32 refers to an annular linkage component, such as a combination of a stainless steel ring body and an articulated seat, which synchronously controls multiple groups of locking levers 33 through circular motion;

[0054] The support assembly 3 on the manhole cover 1 is inserted into the placement grooves corresponding to each placement part 21 to adjust the height between the manhole cover 1 and the manhole cover seat 2.

[0055] As Figure 2 and Figure 3 shown, when the support assembly 3 on the manhole cover 1 is inserted into the placement grooves with different depths of the placement part 21, its height from the manhole cover seat 2 can be adjusted. Specifically, in actual use, when the ground subsides and the manhole cover 1 protrudes above the ground, the support assembly 3 on the manhole cover 1 can be inserted into a deeper placement groove to reduce the distance between the manhole cover 1 and the manhole cover seat 2 and adjust the height of the manhole cover 1 until it is parallel to the ground;

[0056] When the height of the manhole cover 1 is lower than the ground, the support assembly 3 on the manhole cover 1 can be inserted into a shallower placement groove to increase the distance between the manhole cover 1 and the manhole cover seat 2 and adjust the height of the manhole cover 1 until it is parallel to the ground.

[0057] The above structure improves the applicability of the equipment, enabling the manhole cover 1 to be adjusted when there is a height difference due to ground subsidence, damage, etc., resulting in an uneven ground, reducing potential safety hazards on road traffic, and avoiding the long process of having to re-dig and rebuild inspection wells later.

[0058] It should be added that a storage groove 311 corresponding to the locking lever 33 is opened in the placement plate 31;

[0059] An articulated rod 332 corresponding to the locking lever 33 is arranged in the storage groove 311;

[0060] A reset torsion spring is arranged on the articulated rod 332, and the reset torsion spring makes the locking hook 331 abut against the fixing hole 211.

[0061] In the above structure, the reset torsion spring can make the hinge rod 332 have a deflection force. After the manhole cover 1 and the manhole cover seat 2 are installed, when the locking ring 32 can be loosened, the hinge rod 332 rotates to pull the locking ring 32 downward and engage in the receiving portion 333. Figure 6 As shown, the locking lever 33 has one end of a locking hook 331 which is engaged in the fixing hole 211 to achieve locking.

[0062] It should be supplemented that the hinge member 34 includes hinge seats respectively arranged on the inner wall of the locking ring 32 and on the side of the locking lever 33 away from the placement plate 31;

[0063] A connecting rod is arranged between the two groups of hinge seats, and the hinge seats are arranged in a position that can drive the connecting rod to rotate without hindering the moving path of the locking ring 32 .

[0064] In the present application, an unlocking rod 12 is also included, and an unlocking protrusion corresponding to the locking ring 32 is provided at the bottom end of the unlocking rod 12;

[0065] The manhole cover 1 is provided with an unlocking hole 11 , and the width of the unlocking hole 11 corresponds to the unlocking rod 12 .

[0066] The controllable release of the locking lever 33 in the placement plate 31 is achieved by setting a special unlocking rod 12. The unlocking protrusion set at the bottom of the unlocking rod 12 forms a corresponding match with the locking ring 32. The unlocking hole 11 with a specific width is designed to limit the insertion angle of the unlocking rod 12 to ensure the precise implementation of the unlocking action. This structure allows maintenance personnel to use special tools to release the locked state through physical contact while maintaining the stability of the locking ring 32 in daily use, solving the problem that traditional fixing devices are difficult to disassemble and maintain. The corresponding relationship between the width of the unlocking hole 11 and the unlocking rod 12 not only prevents accidental operation by foreign objects, but also ensures the guidance when the tool is inserted, achieving the dual effects of preventing accidental touch and easy operation.

[0067] Furthermore, an isolation ring 13 is also provided at the bottom of the manhole cover 1;

[0068] The inner diameter of the isolation ring 13 is adapted to the outer diameter of the manhole cover seat 2;

[0069] The gap between the isolation ring 13 and the support assembly 3 is adapted to the thickness of the manhole cover seat 2 .

[0070] Among them, the isolation ring 13 refers to a ring structure, which is fixed to the bottom edge of the manhole cover 1. Specifically, it can be realized by using a metal ring or a composite material ring integrally cast with the manhole cover 1. Its inner diameter size is designed according to the outer diameter of the manhole cover seat 2. For example, the gap between the two is controlled within the range of 0.5 - 2 millimeters to form a tight fitting relationship. The gap between the isolation ring 13 and the support assembly 3 refers to the distance from the inner wall of the isolation ring 13 to the outer edge of the support assembly 3, which can be specifically achieved by adjusting the installation position of the support 3 assembly or the width of the isolation ring. For example, the gap is set to 1.05 - 1.1 times the thickness of the manhole cover seat, so that when the manhole cover is closed, the isolation ring completely wraps the edge of the manhole cover seat.

[0071] Specifically, when the manhole cover 1 is closed, the inner wall of the isolation ring 13 contacts the outer wall of the manhole cover seat 2 to form a circumferential limit, preventing the manhole cover 1 from displacing in the horizontal direction. At the same time, the gap between the isolation ring 13 and the support assembly 3 is filled with the thickness of the manhole cover seat 2, forming a constraint along the axial direction of the manhole cover seat 2 to prevent the manhole cover 1 from bouncing in the vertical direction. Thus, the manhole cover seat 2 is wrapped in the space formed by the isolation ring 13 and the support assembly 3 and is fixed through double mechanical constraints in the horizontal and vertical directions. For example, when impacted by external water pressure, the rigid structure of the isolation ring 13 disperses the pressure to the outer wall of the manhole cover seat 2, preventing the manhole cover 1 from shifting due to local stress.

[0072] Compared with the prior art, traditional inspection wells only rely on bolts or buckles to fix the manhole cover, lacking a wrapping structure for the edge of the manhole cover seat, and are prone to loosening of the fixing points due to long-term vibration or pressure impact. This solution extends the fixing effect from local connection to the entire circumference of the manhole cover seat through the annular wrapping design of the isolation ring, eliminating the risk of overall displacement caused by single-point failure.

[0073] Through the above technical solution, this application solves the problems of lateral displacement and longitudinal bouncing of the manhole cover caused by water pressure or installation error. Through the double constraints formed by mechanical wrapping, the matching accuracy between the manhole cover and the manhole cover seat is improved, avoiding the phenomena of the manhole cover popping open and the road surface cracking caused by fixing failure.

[0074] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, then such directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0075] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, such descriptions of "first", "second", etc. are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0076] In addition, "a plurality of" means two or more.

[0077] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A manhole cover fixing mechanism, applied to a manhole cover (1) and a manhole cover seat (2), characterized in that: include: A plurality of sets of placement parts (21) are provided in the manhole cover seat (2); A support assembly (3) disposed at the bottom of the manhole cover (1) and corresponding to the placement portion (21); The placement portion (21) is provided with a fixing hole (211); The support assembly (3) comprises a placement plate (31) and a locking ring (32); A locking lever (33) is hingedly arranged inside the placement plate (31), one end of the locking lever (33) is provided with a locking hook (331) corresponding to the fixing hole (211), and the other end of the locking lever (33) is provided with a hinged part (34) connected to the locking ring (32); A receiving portion (333) is provided at one end of the locking lever (33) close to the hinge (34); The locking ring (32) is lifted to drive the locking lever (33) to be stored in the placement plate (31) through the hinge (34); The locking ring (32) is engaged in the receiving portion (333) to abut against the locking lever (33) so that the locking hook (331) at the end thereof is engaged in the fixing hole (211) to fix the manhole cover (1) in the manhole cover seat (2).

2. According to claim 1, a manhole cover fixing mechanism is characterized in that: A plurality of sets of the placement parts (21) are distributed in a ring shape inside the manhole cover seat (2); Each group of the placement parts (21) is composed of a plurality of placement grooves arranged at equal intervals; A plurality of placement grooves are arranged from shallow to deep along the circumference of the manhole cover seat (2); The upper support assembly (3) of the manhole cover (1) is inserted into the corresponding placement groove of each group of the placement parts (21) to adjust the height between the manhole cover (1) and the manhole cover seat (2).

3. According to claim 1, a manhole cover fixing mechanism is characterized in that: The placement plate (31) is provided with a storage groove (311) corresponding to the locking lever (33); A hinged rod (332) corresponding to the locking lever (33) is arranged in the storage groove (311); The hinge rod (332) is provided with a return torsion spring, and the return torsion spring causes the locking hook (331) to abut against the fixing hole (211).

4. The manhole cover fixing mechanism according to claim 1 is characterized in that: The hinged member (34) comprises hinged seats respectively arranged on the inner wall of the locking ring (32) and on a side of the locking lever (33) away from the placement plate (31); A connecting rod is arranged between the two groups of hinged seats.

5. The manhole cover fixing mechanism according to claim 1 is characterized in that: It also includes an unlocking rod (12), wherein the bottom end of the unlocking rod (12) is provided with an unlocking protrusion corresponding to the locking ring (32); An unlocking hole (11) is provided on the manhole cover (1), and the width of the unlocking hole (11) corresponds to the unlocking rod (12).

6. The manhole cover fixing mechanism according to claim 1, characterized in that: The bottom of the manhole cover (1) is also provided with an isolation ring (13); The inner diameter of the isolation ring (13) is adapted to the outer diameter of the manhole cover seat (2); The gap between the isolation ring (13) and the support assembly (3) is adapted to the thickness of the manhole cover seat (2).

Images