Well lid and assembling and disassembling tool

Abstract

The utility model relates to the technical field of engineering facilities and discloses a well lid and an assembling and disassembling tool, the well lid comprises a well lid base and a lid body, the lid body is provided with a hinged end and a free end opposite to the hinged end, hinged shafts are oppositely arranged on the two sides of the hinged end, and kidney-shaped grooves are formed in the well lid base and correspond to the hinged shafts; the two hinge shafts are slidably connected into the corresponding kidney-shaped grooves correspondingly, so that the situation that an extension piece needs to be arranged on the cover body and an extension cavity needs to be formed in the well lid base is avoided, the shape of the well lid is more regular, the well lid installation and replacement difficulty is lowered, and the effect that the well lid is convenient to install and replace is achieved.

Description

Technical Field

[0001] The present application belongs to the technical field of engineering facilities, and specifically relates to a manhole cover and an assembly and disassembly tool. Background Art

[0002] Manhole covers are an indispensable part of urban construction. They are usually installed on the wellheads of various underground facilities, such as drainage pipes, cable pipes, water wells, thermal wells, etc. The main function of manhole covers is to protect the wellheads and prevent pedestrians or objects from falling. They also have the effect of preventing garbage and other dirt from entering underground facilities.

[0003] The manhole cover includes a manhole cover seat and a cover body arranged on the manhole cover seat. There are two common ways to connect the cover body and the manhole cover seat. One is that the cover body and the manhole cover seat are detachable, that is, the cover body can be removed from the manhole cover seat; the other is that the manhole cover and the manhole cover seat are hinged, that is, the cover body is opened or closed by flipping. For the solution that the cover body and the manhole cover seat are detachable, it will make the cover body easy to be lost or stolen, so most of the covers are connected to the manhole cover seat by hinged connection.

[0004] In order to realize the hinge connection between the cover body and the manhole cover seat, a hinge plate is extended from one end of the cover body, hinge shafts are relatively arranged at both ends of the hinge plate, and the manhole cover seat is provided with an extension cavity for accommodating the hinge plate, and the two hinge shafts are extended into the cavity wall of the extension cavity to realize the hinge connection between the cover body and the manhole cover seat; however, due to the provision of the hinge plate and the extension cavity, the shape of the manhole cover is irregular, which increases the difficulty of installing the manhole cover, especially when the manhole cover seat is replaced, the manhole cover is difficult to replace, which affects the replacement efficiency of the manhole cover. Utility Model Content

[0005] The present application provides a manhole cover and an installation and disassembly tool to reduce the difficulty of installing and replacing the manhole cover.

[0006] The technical solution adopted in this application is:

[0007] A manhole cover comprises a manhole cover seat and a cover body, wherein the cover body has a hinged end and a free end opposite to the hinged end, hinge shafts are arranged opposite to each other on both sides of the hinged end, the manhole cover seat is provided with waist-shaped grooves corresponding to the hinge shafts, and the two hinge shafts are respectively slidably connected in the corresponding waist-shaped grooves.

[0008] By adopting the above technical solution, when the cover body is opened, the cover body drives the hinge shaft to move, which then makes the hinge shaft slide in the waist-shaped groove, and then makes the cover body open. Since the hinge shaft is arranged at the hinge end of the cover body, it is avoided that there is a need to provide an extension sheet on the cover body and an extension cavity on the manhole cover seat, thereby making the shape of the manhole cover more regular, thereby reducing the difficulty of installing and replacing the manhole cover, and achieving the effect of facilitating the installation and replacement of the manhole cover.

[0009] Optionally, the manhole cover seat has a connecting end and an open end opposite to the connecting end, the waist-shaped groove is arranged at the connecting end, and the waist-shaped groove is arranged to be inclined upward from the connecting end to the open end.

[0010] By adopting the above technical scheme, since the waist-shaped groove is inclined upward from the connecting section to the opening end, when the cover body is closed, the hinge shaft slides along the inclined direction of the waist-shaped groove to the bottom of the waist-shaped groove, so as to avoid the need for manual sliding of the cover body, so as to achieve the effect of facilitating the closing of the cover body; in addition, it can also increase the opening angle of the cover body to facilitate the staff to enter the well through the manhole cover seat, and also increase the stability of the cover body when it is in the open position, avoid the cover body from being closed due to non-human influence, and increase the safety of the manhole cover.

[0011] Optionally, a locking piece is provided at the free end, and the manhole cover seat is provided with a support plate located at the bottom of the cover body. The locking piece is rotatably connected to the cover body so that the locking piece has a locking position that cooperates with the support plate stopper and an unlocking position that avoids the support plate.

[0012] By adopting the above technical solution, when opening the cover body, the locking piece is first rotated, and then the locking piece is rotated to a position to avoid the support plate, and then the free end of the cover body is flipped upward to open the cover body; after closing the cover body, the locking piece is rotated to a position to cooperate with the support plate stop, so that the locking piece locks the cover body to increase the connection stability between the cover body and the manhole cover seat, avoid the situation where non-staff can open the cover body, and thus increase the safety of the manhole cover.

[0013] Optionally, the locking member includes a locking shaft passing through the cover body and a locking plate arranged at the bottom of the locking shaft. When the locking member is in the locking position, the locking plate cooperates with the support plate stopper. When the locking member is in the unlocking position, the locking plate avoids the support plate.

[0014] By adopting the above technical solution, when unlocking the cover, the lock shaft is rotated, and then the lock shaft drives the locking plate to rotate, so that the locking plate and the support plate are avoided, thereby completing the unlocking of the cover; and after closing the cover, the lock shaft is rotated so that the locking plate and the support plate stop cooperate, thereby completing the locking of the cover. In summary, in the process of locking or unlocking the cover, it is only necessary to rotate the lock shaft, thereby achieving the effect of facilitating the locking or unlocking of the cover.

[0015] Optionally, a driving groove is provided at the top of the lock shaft, and the cross-sectional shape of the driving groove is polygonal. A sealing block and an elastic member acting on the sealing block are provided in the driving groove. When the sealing block is pressed downward to make the sealing block avoid the notch of the driving groove, the elastic member is in a deformed state.

[0016] By adopting the above technical solution, when unlocking the cover body, it is necessary to use a tool adapted to the drive groove to press the sealing block downward so that the sealing block compresses the elastic part, and then rotate the tool, so that the tool drives the lock shaft to rotate to unlock the cover body. After the tool is removed from the drive groove, the elastic part restores its deformation, so that the sealing block seals the notch of the drive groove to prevent dirt from entering the drive groove, thereby ensuring the effect of facilitating unlocking or locking the cover body, and at the same time preventing non-staff from being able to unlock the cover body, thereby increasing the safety of the manhole cover.

[0017] Optionally, the cover body is provided with a connecting hole for accommodating the locking shaft, the hole wall of the connecting hole is provided with an accommodating cavity, a limiting block and a reset member acting on the limiting block are provided in the accommodating cavity, the locking shaft is provided with a limiting groove, when the locking member is in the locking position, at least part of the limiting block is located in the limiting groove, when the locking member is in the unlocking position, the limiting block is separated from the limiting groove and the reset member is in a deformed state.

[0018] By adopting the above technical solution, when the cover is unlocked, the lock shaft is rotated so that the lock shaft and the connecting hole rotate relative to each other. At this time, the lock shaft needs to overcome the elastic force of the reset member, thereby increasing the force required to unlock the cover, thereby increasing the stability of the lock member locking the cover. When the cover is locked, the lock shaft is rotated so that the lock shaft and the connecting hole rotate relative to each other. When the lock shaft rotates to the position where the limit block is located, the limit block extends into the limit groove under the action of the reset member to limit the lock shaft to the locked position. At the same time, when the limit block extends into the limit groove, it can also make a sound to remind the staff that the lock member has rotated to the locked position, thereby achieving the effect of facilitating the staff to lock the cover.

[0019] Optionally, an operating cavity is provided at the free end, an unlocking hole is provided at the cavity mouth of the operating cavity, the aperture of the unlocking hole is smaller than the aperture of the operating cavity, a hidden block capable of extending into the unlocking hole and a driving member acting on the hidden block are slidably connected in the operating cavity, and when the hidden block is pressed downward to make the hidden block avoid the unlocking hole, the driving member is in a deformed state.

[0020] By adopting the above technical solution, when the cover body is turned over, it is necessary to use a tool to press the hidden block, and then the hidden block slides relative to the unlocking hole and the operating cavity, so that the hidden block presses the driving member, the driving member is deformed, and finally the tool cooperates with the end wall stopper of the operating cavity, and then an oblique upward pulling force is applied to the tool, so that the cover body is turned over under the action of the tool to complete the opening of the cover body, and after the tool is separated from the operating cavity, the driving block recovers its deformation, so that the hidden block extends into the unlocking hole to seal the unlocking hole, and prevents dirt from entering the unlocking hole and the operating cavity, so as to ensure the effect of facilitating the turning of the cover body. At the same time, the setting of the hidden block and the driving member can also prevent non-staff from turning over the cover body, so as to increase the safety of the manhole cover.

[0021] The present application also discloses an assembly and disassembly tool for assembling and disassembling the above-mentioned manhole cover, wherein the cover body is provided with a locking shaft, and the locking shaft is provided with a driving groove. The tool is characterized in that the tool comprises a rod body, and one end of the rod body is provided with a driving portion which can extend into the driving groove and is adapted to the driving groove.

[0022] By adopting the above technical solution, when unlocking the cover body, the driving part is extended into the driving groove, and then the rod body is rotated so that the driving part drives the lock shaft to rotate, thereby unlocking the cover body; when locking the cover body, the same steps can be followed, thereby achieving the effect of facilitating locking or unlocking the cover body.

[0023] Optionally, an operating cavity is provided at the free end, an unlocking hole is provided at the cavity mouth of the operating cavity, and a first stop portion and a second stop portion are relatively provided at the other end of the rod body, and the first stop portion and the second stop portion can extend into the operating cavity through the unlocking hole and cooperate with the end wall stop of the operating cavity.

[0024] Through the above technical solution, when the cover body is flipped, the first stop part and the second stop part are extended into the operating cavity through the unlocking hole so that the first stop part and the second stop part cooperate with the end wall stop of the operating cavity, and then an oblique upward pulling force is applied to the rod body to flip the cover body, thereby achieving the effect of facilitating the flipping of the cover body and improving the flipping efficiency of the cover body by the staff.

[0025] Optionally, a guide surface is provided on the side of the first stop portion and the side of the second stop portion facing away from each other.

[0026] By adopting the above technical solution, since the first stop part and the second stop part are both provided with guide surfaces on the sides facing away from each other, when the first stop part and the second stop part are extended into the operating cavity through the unlocking hole, the guide surfaces can guide the first stop part and the second stop part, so that the first stop part and the second stop part can enter the operating cavity through the unlocking hole more smoothly, thereby further improving the flipping efficiency of the cover body.

[0027] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0028] 1. The manhole cover in the present application includes a manhole cover seat and a cover body, the cover body has a hinged end and a free end opposite to the hinged end, hinge shafts are arranged on both sides of the hinged end, the manhole cover seat is provided with waist-shaped grooves corresponding to the hinge shafts, and the two hinge shafts are respectively slidably connected in the corresponding waist-shaped grooves, thereby avoiding the need to provide an extension sheet on the cover body and an extension cavity on the manhole cover seat, thereby making the shape of the manhole cover more regular, reducing the difficulty of installing and replacing the manhole cover, and achieving the effect of facilitating the installation and replacement of the manhole cover.

[0029] 2. The manhole cover seat in the present application has a connecting section and an open end opposite to the connecting end, and a waist-shaped groove is arranged at the connecting end, and the waist-shaped groove is inclined upward from the connecting end to the open end, so that when the cover body is closed, the hinge shaft slides along the inclined direction of the waist-shaped groove to the bottom of the waist-shaped groove to avoid the need for manual sliding of the cover body, so as to achieve the effect of facilitating the closing of the cover body; in addition, it can also increase the opening angle of the cover body so that the staff can enter the well through the manhole cover seat, and also increase the stability of the cover body when it is in the open position, avoid the cover body from being closed under non-human action, and increase the safety of the manhole cover.

[0030] 3. The free end in the present application is provided with a locking piece, and the manhole cover seat is provided with a supporting piece located at the bottom of the cover body. The locking piece is rotatably connected to the cover body so that the locking piece has a locking position that cooperates with the support piece stopper and an unlocking position that avoids the support piece. When the cover body is opened, the locking piece is first rotated, and then the locking piece is rotated to a position that avoids the support piece, and then the free end of the cover body is flipped upward to open the cover body; and after closing the cover body, the locking piece is rotated so that the locking piece is rotated to a position that cooperates with the support piece stopper, so that the locking piece locks the cover body, so as to increase the connection stability between the cover body and the manhole cover seat, avoid the situation where non-staff can open the cover body, and thereby increase the safety of the manhole cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0032] Figure 1 This is a schematic diagram of the structure of the manhole cover in one embodiment of the present application;

[0033] Figure 2 This is a schematic diagram of the structure of the manhole cover in one embodiment of the present application, mainly showing that the cover body is in an open position;

[0034] Figure 3 This is a schematic structural diagram of the manhole cover from another perspective in one embodiment of the present application;

[0035] Figure 4 A cross-sectional view of the manhole cover according to one embodiment of the present application;

[0036] Figure 5 for Figure 4 A magnified view of the middle A area;

[0037] Figure 6 A cross-sectional view from another perspective of the manhole cover in one embodiment of the present application;

[0038] Figure 7 for Figure 6 Enlarged view of the B area;

[0039] Figure 8 This is a schematic diagram of the structure of the assembly and disassembly tool according to one embodiment of the present application.

[0040] Reference numerals:

[0041] 1. Manhole cover seat; 11. Waist-shaped groove; 12. Support plate; 2. Cover body; 21. Hinge shaft; 22. Accommodating cavity; 221. Limit block; 222. Reset member; 23. Operating cavity; 231. Unlocking hole; 232. Hidden block; 233. Driving member; 3. Locking member; 31. Locking shaft; 311. Driving groove; 312. Sealing block; 313. Elastic member; 314. Limit groove; 315. Through hole; 32. Locking plate; 4. Rod body; 41. Driving part; 42. First stop part; 421. Guide surface; 43. Second stop part. DETAILED DESCRIPTION

[0042] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0043] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0044] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0045] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0047] Reference Figures 1 to 7 , discloses a manhole cover, which includes a manhole cover seat 1 and a cover body 2, the cover body 2 has a hinged end and a free end opposite to the hinged end, hinge shafts 21 are arranged on both sides of the hinged end, the manhole cover seat 1 is provided with waist-shaped grooves 11 corresponding to the hinge shafts 21, and the two hinge shafts 21 are respectively slidably connected in the corresponding waist-shaped grooves 11.

[0048] It can be understood that the cross section of the hinge shaft 21 perpendicular to its own axial direction is circular, so that the hinge shaft 21 can slide in the same manner as the waist-shaped groove 11, and at the same time, the hinge shaft 21 can rotate relative to the waist-shaped groove 11.

[0049] When the cover body 2 is opened, an upward pulling force is applied to the cover body 2, and the cover body 2 drives the hinge shaft 21 to move, so that the hinge shaft 21 slides in the waist-shaped groove 11 and rotates relative to the waist-shaped groove 11, so that the cover body 2 is opened. Since the hinge shaft 21 is arranged at the hinge end of the cover body 2, it is avoided that an extension piece is provided on the cover body 2 and an extension cavity is provided on the manhole cover seat 1, thereby making the shape of the manhole cover more regular, thereby reducing the difficulty of installing and replacing the manhole cover, and achieving the effect of facilitating the installation and replacement of the manhole cover.

[0050] It should be noted that after the cover body 2 is placed on the manhole cover seat 1, there is a gap between the hinged end and the free end of the cover body 2 and the manhole cover seat 1 to ensure that the cover body 2 can be opened or closed normally.

[0051] The structure of the waist groove 11 of the present application is not specifically limited. Preferably, refer to Figure 1 and Figure 2 The manhole cover seat 1 has a connecting end and an open end opposite to the connecting end, a waist-shaped groove 11 is arranged at the connecting end, and the waist-shaped groove 11 is inclined upward from the connecting end to the open end, so that when the cover body 2 is closed, the hinge shaft 21 slides to the bottom of the waist-shaped groove 11 along the inclined direction of the waist-shaped groove 11, so as to avoid the need for manual sliding of the cover body 2, so as to achieve the effect of facilitating the closing of the cover body 2; in addition, it can also increase the opening angle of the cover body 2 so that the staff can enter the well through the manhole cover seat 1, and also increase the stability of the cover body 2 when it is in the open position, avoid the cover body 2 from being closed under non-human action, and increase the safety of the manhole cover.

[0052] In other embodiments, the waist-shaped groove 11 may also be a groove-shaped structure extending in the horizontal direction.

[0053] In a preferred embodiment, referring to Figure 4 and Figure 5 A locking member 3 is provided at the free end, and the manhole cover seat 1 is provided with a supporting sheet 12 located at the bottom of the cover body 2. The locking member 3 is rotatably connected to the cover body 2 so that the locking member 3 has a locking position that cooperates with the support sheet 12 stopper and an unlocking position that avoids the support sheet 12.

[0054] Specifically, when opening the cover body 2, the locking piece 3 is rotated first, and then the locking piece 3 is rotated to a position to avoid the support plate 12, and then the free end of the cover body 2 is flipped upward to open the cover body 2; after closing the cover body 2, the locking piece 3 is rotated to a position to cooperate with the support plate 12 stop, so that the locking piece 3 locks the cover body 2 to increase the connection stability between the cover body 2 and the manhole cover seat 1, avoid the situation where non-staff can open the cover body 2, and thus increase the safety of the manhole cover.

[0055] Preferably, the support sheet 12 is extended along the circumference of the manhole cover seat 1, and a avoidance area is provided at the hinged end of the cover body 2 corresponding to the connecting seat of the manhole cover seat 1 to ensure the normal flipping of the cover body 2. At the same time, the support sheet 12 can exert an upward supporting force on the cover body 2 to ensure the stability of the cover body 2.

[0056] The present application does not specifically limit the structure of the locking member 3. Preferably, refer to Figure 4 and Figure 5 The locking member 3 includes a locking shaft 31 passing through the cover body 2 and a locking plate 32 arranged at the bottom of the locking shaft 31. When the locking member 3 is in the locking position, the locking plate 32 cooperates with the support plate 12 to stop. When the locking member 3 is in the unlocking position, the locking plate 32 avoids the support plate 12.

[0057] It should be noted that when the locking member 3 is in the locking position, the locking piece 32 is located at the bottom of the supporting piece 12 so that the locking piece 32 cooperates with the supporting piece 12 in the vertically upward direction.

[0058] Specifically, when unlocking the cover body 2, the lock shaft 31 is rotated, and then the lock shaft 31 drives the locking plate 32 to rotate, so that the locking plate 32 and the support plate 12 avoid each other, thereby completing the unlocking of the cover body 2; and after closing the cover body 2, the lock shaft 31 is rotated to make the locking plate 32 and the support plate 12 stop cooperate, thereby completing the locking of the cover body 2.

[0059] In summary, in the process of locking or unlocking the cover body 2 , it is only necessary to rotate the lock shaft 31 , thereby achieving the effect of facilitating locking or unlocking the cover body 2 .

[0060] Further, see Figure 1 , Figure 4 and Figure 5 A driving groove 311 is provided at the top of the lock shaft 31. The cross-sectional shape of the driving groove 311 is polygonal. A sealing block 312 and an elastic member 313 acting on the sealing block 312 are provided in the driving groove 311. When the sealing block 312 is pressed downward to make the sealing block 312 avoid the notch of the driving groove 311, the elastic member 313 is in a deformed state.

[0061] Specifically, when unlocking the cover body 2, it is necessary to use a tool that is compatible with the driving groove 311 to press the sealing block 312 downward, so that the sealing block 312 compresses the elastic member 313, and at the same time makes the sealing block 312 avoid the notch of the driving groove 311, so that the tool is inserted into the driving groove 311, and then the tool is rotated, so that the tool drives the locking shaft 31 to rotate, so as to unlock the cover body 2. After the tool is taken out of the driving groove 311, the elastic member 313 restores its deformation, so that the sealing block 312 seals the notch of the driving groove 311 to prevent dirt from entering the driving groove 311, so as to ensure the effect of facilitating unlocking or locking the cover body 2, and at the same time prevents non-staff from being able to unlock the cover body 2, so as to increase the safety of the manhole cover.

[0062] The present application does not specifically limit the structure of the elastic member 313. Preferably, the elastic member 313 is a spring to ensure the stability of the sealing block 312. In other implementation examples, the elastic member 313 may also be an elastic sheet or other elastic member 313 and other structures capable of elastic deformation.

[0063] The present application does not impose any specific limitation on the cross-sectional shape of the driving groove 311 , which may be a structure with a quadrilateral cross-sectional shape, or a structure with a triangular cross-sectional shape or a hexagonal cross-sectional shape.

[0064] Preferably, the driving groove 311 includes a first groove and a second groove connected to the first groove, the diameter of the first groove is smaller than the diameter of the second groove, the elastic member 313 is located in the second groove, and the sealing block 312 includes a first section that can extend into the first groove and a second section slidably connected to the second groove, the diameter of the second section is larger than the diameter of the first section, so that the second section can block the sealing block 312 to prevent the sealing block 312 from detaching from the driving groove 311, thereby increasing the connection stability between the sealing block 312 and the driving groove 311.

[0065] Further, see Figure 4 and Figure 5 The cover body 2 is provided with a connecting hole for accommodating the lock shaft 31, and the hole wall of the connecting hole is provided with an accommodating cavity 22. A limiting block 221 and a reset member 222 acting on the limiting block 221 are provided in the accommodating cavity 22. The lock shaft 31 is provided with a limiting groove 314. When the locking member 3 is in the locking position, at least part of the limiting block 221 is located in the limiting groove 314. When the locking member 3 is in the unlocking position, the limiting block 221 is separated from the limiting groove 314 and the reset member 222 is in a deformed state.

[0066] Specifically, when the cover 2 is unlocked, the lock shaft 31 is rotated so that the lock shaft 31 and the connecting hole rotate relative to each other. At this time, the lock shaft 31 needs to overcome the elastic force of the reset member 222, thereby increasing the force required to unlock the cover 2, thereby increasing the stability of the lock member 3 locking the cover 2. When the cover 2 is locked, the lock shaft 31 is rotated so that the lock shaft 31 and the connecting hole rotate relative to each other. When the lock shaft 31 rotates to the position where the limit block 221 is located, the limit block 221 extends into the limit groove 314 under the action of the reset member 222 to limit the lock shaft 31 in the locked position. At the same time, when the limit block 221 extends into the limit groove 314, it can also make a sound to remind the staff that the lock member 3 has rotated to the locked position, thereby achieving the effect of facilitating the staff to lock the cover 2.

[0067] Preferably, the lock shaft 31 has a blocking ring surrounding its axial direction, and the top of the connecting hole has an annular groove for accommodating the blocking ring, so that the blocking ring and the groove wall of the annular groove cooperate to limit the lock shaft 31, so as to prevent the lock shaft 31 from being separated from the connecting hole in the vertical direction, thereby increasing the connection stability between the locking member 3 and the cover body 2.

[0068] The present application does not specifically limit the structure of the reset member 222. Preferably, the reset member 222 is a spring to ensure the plug-in matching effect between the limit block 221 and the limit groove 314, thereby increasing the locking stability of the cover 2. In other implementation examples, the reset member 222 can also be an elastic sheet or an elastic column or other structures that can undergo elastic deformation.

[0069] The present application does not specifically limit the structure of the limit block 221. Preferably, the limit block 221 is a spherical structure to ensure the locking effect of the cover 2 while facilitating the unlocking of the cover 2. In other implementation examples, the limit block 221 can also be a rod-shaped structure with a semicircular end.

[0070] Preferably, the accommodating cavity 22 has an installation opening located on the side of the cover body 2, and an adjustment block is threadedly connected to the installation opening to facilitate the installation of the limit block 221 and the reset member 222. At the same time, the elastic force that the reset member 222 can apply to the limit block 221 can be adjusted by the adjustment block.

[0071] Further, refer to Figure 5 The lock shaft 31 is provided with a through hole 315, one opening of the through hole 315 is located on the groove wall of the driving groove 311, and the other opening of the through hole 315 is located on the circumferential surface of the lock shaft 31, so that the staff can inject lubricating oil or rust remover into the hole wall of the connecting hole through the driving groove 311, so as to achieve the effect of facilitating unlocking the cover body 2.

[0072] In other embodiments, the locking member 3 may further include a locking shaft 31 and a protrusion disposed on the side of the locking shaft 31 , and the protrusion cooperates with the support sheet 12 to stop.

[0073] In a preferred embodiment, referring to Figure 3 , Figure 6 and Figure 7 An operating cavity 23 is provided at the free end, and an unlocking hole 231 is provided at the cavity mouth of the operating cavity 23. The aperture of the unlocking hole 231 is smaller than the aperture of the operating cavity 23. A hidden block 232 capable of extending into the unlocking hole 231 and a driving member 233 acting on the hidden block 232 are slidably connected in the operating cavity 23. When the hidden block 232 is pressed downward to make the hidden block 232 avoid the unlocking hole 231, the driving member 233 is in a deformed state.

[0074] Specifically, when the cover 2 is turned over, it is necessary to use a tool to press the hidden block 232, so that the hidden block 232, the unlocking hole 231 and the operating chamber 23 slide relative to each other, so that the hidden block 232 applies pressure to the driving member 233, the driving member 233 is deformed, and finally the tool cooperates with the end wall stopper of the operating chamber 23, and then an oblique upward pulling force is applied to the tool, so that the cover 2 is turned over under the action of the tool to complete the opening of the cover 2, and after the tool is separated from the operating chamber 23, the driving member 233 recovers its deformation, so that the hidden block 232 extends into the unlocking hole 231 to seal the unlocking hole 231, and prevents dirt from entering the unlocking hole 231 and the operating chamber 23, so as to ensure the effect of facilitating the turning over of the cover 2. At the same time, the setting of the hidden block 232 and the driving member 233 can also prevent non-staff from turning over the cover 2, so as to increase the safety of the manhole cover.

[0075] Preferably, the hidden block 232 has a sealing section that can extend into the unlocking hole 231 and a sliding section that is slidably connected to the operating cavity 23. The diameter of the sliding section is larger than the diameter of the sealing section, so that the sliding section can cooperate with the end wall stop of the operating cavity 23 to prevent the hidden block 232 from escaping from the operating cavity 23 through the unlocking hole 231, thereby increasing the connection stability between the hidden block 232 and the cover body 2.

[0076] The present application does not specifically limit the structure of the driving member 233. Preferably, the driving member 233 is a spring to increase the stability of the hidden block 232. In other embodiments, the driving member 233 may also be an elastic sheet, an elastic column, or other structures capable of elastic deformation.

[0077] Reference Figure 8 The present application also discloses an assembly and disassembly tool, which is used for assembling and disassembling the above-mentioned manhole cover, and includes a rod body 4, one end of which is provided with a driving portion 41 that can extend into the driving groove 311 and is adapted to the driving groove 311.

[0078] Specifically, when unlocking the cover body 2, the driving part 41 is extended into the driving groove 311, and then the rod body 4 is rotated so that the driving part 41 drives the locking shaft 31 to rotate, thereby unlocking the cover body 2; when locking the cover body 2, the same steps can be followed, thereby achieving the effect of facilitating locking or unlocking the cover body 2.

[0079] Preferably, the driving portion 41 is a block structure adapted to the driving slot 311 .

[0080] In a preferred embodiment, referring to Figure 8 The other end of the rod body 4 is oppositely provided with a first stop portion 42 and a second stop portion 43 , which can extend into the operating cavity 23 through the unlocking hole 231 and cooperate with the end wall stop of the operating cavity 23 .

[0081] It can be understood that the first stop portion 42 and the second stop portion 43 are both L-shaped structures, and there is a gap between the first stop portion 42 and the second stop portion 43 at one end away from the driving portion 41, and the first stop portion 42 and the second stop portion 43 can be deformed to facilitate the first stop portion 42 and the second stop portion 43 to extend into the operating cavity 23 through the unlocking hole 231.

[0082] When the cover body 2 is flipped, the first stop portion 42 and the second stop portion 43 are extended into the operating cavity 23 through the unlocking hole 231, so that the first stop portion 42 and the second stop portion 43 cooperate with the end wall stop of the operating cavity 23, and then an oblique upward pulling force is applied to the rod body 4 to flip the cover body 2, thereby achieving the effect of facilitating the flipping of the cover body 2 and improving the flipping efficiency of the cover body 2 by the staff.

[0083] Further, see Figure 8 A guide surface 421 is provided on the side of the first stop portion 42 and the second stop portion 43 facing away from each other, so that when the first stop portion 42 and the second stop portion 43 are extended into the operating cavity 23 through the unlocking hole 231, the guide surface 421 can guide the first stop portion 42 and the second stop portion 43, so that the first stop portion 42 and the second stop portion 43 can enter the operating cavity 23 more smoothly through the unlocking hole 231, further improving the flipping efficiency of the cover body 2.

[0084] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0085] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0086] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A manhole cover, characterized in that: The invention comprises a manhole cover seat (1) and a cover body (2), wherein the cover body (2) has a hinged end and a free end opposite to the hinged end, hinge shafts (21) are arranged opposite to each other on both sides of the hinged end, and the manhole cover seat (1) is provided with waist-shaped grooves (11) corresponding to the hinge shafts (21), and the two hinge shafts (21) are respectively slidably connected to the corresponding waist-shaped grooves (11).

2. A manhole cover according to claim 1, characterized in that: The manhole cover seat (1) has a connecting end and an open end opposite to the connecting end, the waist-shaped groove (11) is arranged at the connecting end, and the waist-shaped groove (11) is arranged to be inclined upward from the connecting end to the open end.

3. A manhole cover according to claim 1, characterized in that: The free end is provided with a locking member (3), the manhole cover seat (1) is provided with a supporting plate (12) located at the bottom of the cover body (2), and the locking member (3) is rotatably connected to the cover body (2) so that the locking member (3) has a locking position that cooperates with the support plate (12) to stop and an unlocking position that avoids the support plate (12).

4. A manhole cover according to claim 3, characterized in that: The locking member (3) comprises a locking shaft (31) passing through the cover body (2) and a locking plate (32) arranged at the bottom of the locking shaft (31); when the locking member (3) is in the locking position, the locking plate (32) and the supporting plate (12) are engaged in a stop; when the locking member (3) is in the unlocking position, the locking plate (32) and the supporting plate (12) are avoided.

5. A manhole cover according to claim 4, characterized in that: A driving groove (311) is arranged at the top of the locking shaft (31), and the cross-sectional shape of the driving groove (311) is polygonal. A sealing block (312) and an elastic member (313) acting on the sealing block (312) are arranged in the driving groove (311). When the sealing block (312) is pressed downward to make the sealing block (312) avoid the notch of the driving groove (311), the elastic member (313) is in a deformed state.

6. A manhole cover according to claim 4, characterized in that: The cover body (2) is provided with a connecting hole for accommodating the locking shaft (31); a hole wall of the connecting hole is provided with an accommodating cavity (22); a limiting block (221) and a reset member (222) acting on the limiting block (221) are provided in the accommodating cavity (22); the locking shaft (31) is provided with a limiting groove (314); when the locking member (3) is in the locking position, at least part of the limiting block (221) is located in the limiting groove (314); when the locking member (3) is in the unlocking position, the limiting block (221) is separated from the limiting groove (314) and the reset member (222) is in a deformed state.

7. A manhole cover according to claim 1, characterized in that: The free end is provided with an operating cavity (23), and an unlocking hole (231) is provided at the cavity opening of the operating cavity (23); the aperture of the unlocking hole (231) is smaller than the aperture of the operating cavity (23); a hidden block (232) capable of extending into the unlocking hole (231) and a driving member (233) acting on the hidden block (232) are slidably connected in the operating cavity (23); when the hidden block (232) is pressed downward to make the hidden block (232) avoid the unlocking hole (231), the driving member (233) is in a deformed state.

8. An assembly and disassembly tool for assembling and disassembling a manhole cover according to any one of claims 1 to 7, wherein the cover body (2) is provided with a locking shaft (31), and the locking shaft (31) is provided with a driving groove (311), characterized in that: It comprises a rod body (4), one end of which is provided with a driving portion (41) capable of extending into the driving groove (311) and matching with the driving groove (311).

9. The assembly and disassembly tool according to claim 8, characterized in that: The free end is provided with an operating cavity (23), and an unlocking hole (231) is provided at the cavity opening of the operating cavity (23); the other end of the rod body (4) is provided with a first stopper (42) and a second stopper (43) opposite to each other, and the first stopper (42) and the second stopper (43) can extend into the operating cavity (23) through the unlocking hole (231) and cooperate with the end wall stopper of the operating cavity (23).

10. The assembly and disassembly tool according to claim 9, characterized in that: A guide surface (421) is provided on the side of the first stop portion (42) and the side of the second stop portion (43) facing away from each other.

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