A lifting pressure relief manhole cover

Abstract

The present invention discloses a lifting type pressure relief manhole cover, which relates to the technical field of manhole covers, and comprises a pipe body and a manhole cover located in the pipe body and sealing the pipe body, wherein the manhole cover is connected to the pipe body through an annular groove, and a guide column is provided on the lower end face of the manhole cover in the pipe body along the direction of the pipe body, and a fixed block is provided on the outer side of the guide column, which is located in the pipe body and slidably connected to the guide column, and the fixed block is fixedly connected to the inner wall of the pipe body, and a sliding groove along the vertical direction is provided in the fixed block. The lifting type pressure relief manhole cover reduces the possibility of the manhole cover being ejected or displaced under the pressure of water flow, and can be reset after being ejected by water flow, thereby reducing the possibility of the manhole cover being lost, and facilitating the installation and disassembly of the manhole cover, and at the same time, the unit to which the manhole cover belongs can know the real-time status of the manhole cover at the first time.

Description

Technical Field

[0001] The present invention relates to the technical field of manhole covers, in particular to a lifting type pressure relief manhole cover. Background Art

[0002] Manhole covers are used to cover deep wells on roads or in homes to prevent people or objects from falling. They can be divided into metal manhole covers, high-strength fiber cement concrete manhole covers, resin manhole covers, etc. according to the material. However, during periods of heavy rain, the existing downpipes and municipal drainage pipes cannot meet the drainage requirements. The pipes are filled with water, which exceeds the load of the pipes, and puts pressure on the entire drainage pipe. As a result, the water flow in the pipes pushes the manhole cover open, and even the manhole cover is often washed away after being pushed open, causing certain safety hazards. Summary of the Invention

[0003] (1) Technical problems solved

[0004] In response to the shortcomings of the existing technology, the present invention provides a lifting pressure relief manhole cover, which solves the problem that the existing downpipe body and municipal drainage pipe body cannot meet the drainage requirements. The pipe is filled with water, which exceeds the load of the pipe, and forms pressure on the entire drainage pipe body, causing the water flow in the pipe to push the manhole cover open, and even the manhole cover is often washed away after being pushed open, causing certain safety hazards.

[0005] (2) Technical solution

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a lifting type pressure relief manhole cover, comprising a pipe body and a manhole cover located in the pipe body and sealing the pipe body, the manhole cover and the pipe body being connected by an annular groove, the lower end face of the manhole cover in the pipe body being provided with a guide column along the direction of the pipe body, the outer side of the guide column being provided with a fixed block located in the pipe body and slidingly connected to the guide column, the fixed block being fixedly connected to the inner wall of the pipe body, a sliding groove along the vertical direction being provided in the fixed block, the fixed block being connected to the guide column by the sliding groove, a cylindrical groove along the vertical direction being provided in the guide column, and a locking limit device being provided in the cylindrical groove for facilitating the assembly of the guide column and the fixed block.

[0007] Through the above technical solution, the user can place the manhole cover on the pipe body, and the annular groove facilitates the connection between the manhole cover and the pipe body. The guide column slides inside the fixed block, so that the manhole cover can be pushed open when the water volume in the pipe body increases. The movement of the manhole cover can drive the guide column to slide inside the fixed block. The cooperation between the guide column and the fixed block can guide the sliding of the manhole cover. At the same time, the limiter can prevent the guide column from falling off when sliding inside the fixed block.

[0008] Preferably, the locking limit device includes a limit rod located in the cylindrical groove and along the vertical direction, the limit rod and the guide column form a rotating structure through the cylindrical groove, the end of the limit rod away from the manhole cover is provided with a transverse connecting rod located below the fixed block, the transverse connecting rod and the limit rod are an integrated structure, the length of the transverse connecting rod is greater than the diameter of the sliding groove, the end of the limit rod away from the transverse connecting rod is provided with a handle, the size of the handle is greater than the size of the cylindrical groove, and an unlocking hole is provided on the manhole cover to facilitate driving the handle to rotate.

[0009] Through the above technical solution, the user can reach into the unlocking hole and manually control the rotation of the handle. The rotation of the handle can control the rotation of the limit rod, and then the rotation of the transverse connecting rod can be controlled. Through the cooperation of the transverse connecting rod and the fixed block, the connection between the guide column and the fixed block can be limited and locked. The guide column will not fall out of the fixed block during the sliding process, and when the water level in the pipe body drops, the manhole cover will drop under the action of its own gravity. The drop of the manhole cover can drive the guide column to drop in the fixed block, which can realize the automatic resetting of the manhole cover. At the same time, the locking limit device can enhance the anti-theft function of the manhole cover and reduce the possibility of the manhole cover being stolen.

[0010] Preferably, a removal groove is provided on the outer side of the sliding groove, which is connected to the sliding groove and along the direction of the guide column. The size of the removal groove is adapted to the size of the transverse connecting rod, and a No. 1 connecting piece for controlling the rotation of the limit rod is provided in the guide column.

[0011] Through the above technical solution, the rotation of the handle can drive the rotation of the limit rod, and the action of the No. 1 connecting piece can limit the rotation of the limit rod. The rotation of the limit rod can drive the rotation of the transverse connecting rod fixedly connected to the limit rod. Through the cooperation of the transverse connecting rod and the removal groove, the user can pull the manhole cover away from the pipe body. The movement of the manhole cover can drive the guide column to move out of the fixed block, thereby facilitating the installation and disassembly of the manhole cover and the pipe body.

[0012] Preferably, the No. 1 connecting member includes an annular plate located in the cylindrical groove, the annular plate is rotatably connected to the limit rod, a No. 1 circular groove is provided in the annular plate, the No. 1 circular groove is located above the removal groove, the No. 1 circular groove and the removal groove are located on the same vertical line, a No. 2 circular groove is provided on the outer side of the No. 1 circular groove and is located on the inner surface of the annular plate, the No. 1 circular groove and the No. 2 circular groove have the same size, a accommodating groove is provided in the limit rod, a circular block adapted to the No. 1 circular groove and the No. 2 circular groove is slidably connected in the accommodating groove, and the circular block is connected to the accommodating groove via a No. 1 spring.

[0013] With the above technical solution, the user grasps the handle and manually rotates the handle. The rotation of the handle can drive the rotation of the limit rod in the cylindrical groove. The rotation of the limit rod can drive the rotation of the circular clamping block on the limit rod. When the circular clamping block contacts the inner wall of the annular plate, the circular clamping block moves into the accommodating groove through the pressure of the inner wall of the annular plate, and the No. 1 spring is compressed. When the circular clamping block rotates into the No. 1 circular groove, the No. 1 spring rebounds, pushing the circular clamping block to move into the No. 1 circular groove. The cooperation of the circular clamping block and the No. 1 circular groove facilitates the fixed connection between the limit rod and the guide column. When the No. 1 circular groove is above the removal groove, the user can grab the manhole cover and move it upward to drive the guide column to move upward. The movement of the guide column can drive the transverse connecting rod to move out of the removal groove, which is convenient for the fixed connection and disassembly of the guide column and the tube body. When the user grabs the handle and continues to rotate it, the circular clamping block can be driven to move out of the No. 1 circular groove, and the No. 1 spring is compressed. Until it rotates to the No. 2 circular groove, the No. 1 spring rebounds, pushing the circular clamping block to slide into the No. 2 circular groove. At this time, the transverse connecting rod is disconnected from the removal groove, thereby reducing the possibility of the guide column moving out of the fixed block.

[0014] Preferably, a second connecting piece is provided on the outer side of the limiting rod to limit the rotation of the limiting rod, and the second connecting piece is located in the cylindrical groove.

[0015] Through the above technical solution, the No. 2 connector can be used to limit the No. 2 connector when the No. 1 connector fails, further reducing the possibility of the guide column falling out of the fixed block and reducing the possibility of the manhole cover being washed away by water or stolen.

[0016] Preferably, the No. 2 connecting member includes an annular block located on the outside of the annular plate in the cylindrical groove, the outer surface of the annular block is fixedly connected to the inner wall of the cylindrical groove, a waist-shaped groove is provided in the annular block, and an extension block is provided on the limiting rod, and the extension block extends into the waist-shaped groove, and the extension block and the annular block are slidably connected through the waist-shaped groove, and the extension block is fixedly connected to the inner wall of the waist-shaped groove through a No. 2 spring, and the extension block is located above the transverse connecting rod, and the extension block and the transverse connecting rod are distributed along the same vertical line.

[0017] Through the above technical solution, the action of the No. 2 spring can limit the sliding of the extension block in the waist-shaped groove, and when the No. 2 spring is not under force, it will drive the extension block to be located near the No. 2 cylindrical groove. When the user needs to move out the manhole cover, the user can grab the handle and then rotate the handle. The rotation of the handle can drive the rotation of the limit rod, and the rotation of the limit rod can drive the rotation of the transverse connecting rod. At this time, the No. 2 spring is compressed. When the transverse connecting rod is rotated to be located below the removal groove, the user can move the guide column out of the fixed block, and then move the manhole cover out of the tube body. Through the cooperation of the extension block, the annular block and the No. 2 spring, the limit rod can be guided and limited when the No. 1 connecting piece fails, thereby increasing the service life of the device.

[0018] Preferably, a stainless steel anti-fall ring is provided inside the tube body below the fixing block, longitudinal and transverse steel bars are welded inside the stainless steel anti-fall ring, and a support member is provided on the outside of the stainless steel anti-fall ring to support the stainless steel anti-fall ring.

[0019] Through the above technical solution, the support member can support and limit the stainless steel anti-fall ring, which facilitates the assembly of the stainless steel anti-fall ring, reduces the possibility of loss or damage of the stainless steel anti-fall ring, and increases the service life of the device.

[0020] Preferably, the support member includes a support located in the tube body, the support is fixedly connected to the inner wall of the tube body, and the side of the support away from the tube body is provided with a placement groove that supports the stainless steel anti-fall ring. The support is hingedly connected to an assembly plate located on the support, and the assembly plate and the support are connected by bolts passing through the stainless steel anti-fall ring.

[0021] Through the above technical solution, when the user installs the stainless steel anti-fall ring, the user can rotate the assembly plate open, then place the stainless steel anti-fall ring in the placement groove on the support, and then rotate the assembly plate in the opposite direction so that the assembly plate is parallel to the support. At this time, the bolt passes through the assembly plate, the stainless steel anti-fall ring and the support, and is fastened by a nut, which can play an installation role for the stainless steel anti-fall ring, facilitate the assembly of the stainless steel anti-fall ring, and reduce the possibility of the stainless steel anti-fall ring being lost or damaged.

[0022] Preferably, a connecting column is provided on the side of the manhole cover close to the guide column, and a stainless steel plate is fixedly connected to the side of the connecting column away from the manhole cover. The stainless steel plate is fixedly connected to the guide column, and the connecting column, the manhole cover and the stainless steel plate form a driving groove, and the driving groove is connected to the unlocking hole. The limiting rod extends out of the guide column, and the extended part of the limiting rod passes through the stainless steel plate. One end of the limiting rod extending out of the stainless steel plate is fixedly connected to the handle.

[0023] Through the above technical solution, the user can control the rotation of the handle in the drive slot through the unlocking hole, and then control the rotation of the limit rod, reducing the possibility of non-staff operating the handle and causing the manhole cover to be lost.

[0024] Preferably, a smart sensor is provided on the side of the stainless steel plate away from the manhole cover to facilitate real-time monitoring of the water condition in the pipe body.

[0025] Through the above technical solution, the intelligent sensors installed on the stainless steel plates can realize real-time monitoring, real-time alarm, networking and digitization, thus realizing the intelligence of the manhole cover.

[0026] (3) Beneficial effects

[0027] The present invention provides a lifting pressure relief manhole cover. It has the following beneficial effects:

[0028] (1) The lifting pressure relief manhole cover slides inside the fixed block via the guide column, so that the manhole cover can be pushed open when the water volume in the pipe increases. The movement of the manhole cover can drive the guide column to slide inside the fixed block. The cooperation between the guide column and the fixed block can guide the sliding of the manhole cover.

[0029] (2) The lifting pressure relief manhole cover can drive the limit rod to rotate in the guide column by rotating the handle, and the rotation of the limit rod can drive the rotation of the circular block on the limit rod. When the circular block rotates to the No. 1 circular groove, the No. 1 spring rebounds and pushes the circular block to move into the No. 1 circular groove. The cooperation between the circular block and the No. 1 circular groove facilitates the fixed connection between the limit rod and the guide column, reducing the possibility of the limit rod rotating due to water flow during use. When the limit rod rotates until it reaches the No. 2 circular groove, the No. 1 spring rebounds and pushes the circular block to slide into the No. 2 circular groove. At this time, the horizontal connecting rod is disconnected from the removal groove, thereby reducing the possibility of the guide column moving out of the fixed block.

[0030] (3) The lifting pressure relief manhole cover can play a role in limiting and locking the connection between the guide column and the fixed block through the cooperation of the transverse connecting rod and the fixed block. The guide column will not fall out of the fixed block during the sliding process. When the water level in the pipe body drops, the manhole cover will drop under the action of its own gravity. The drop of the manhole cover can drive the guide column to drop with the fixed block, which can realize the automatic reset of the manhole cover. At the same time, the anti-theft function of the manhole cover can be enhanced by the action of the limiter, reducing the possibility of the manhole cover being stolen.

[0031] (4) The lifting type pressure relief manhole cover, through the cooperation of the extension block, the annular block and the No. 2 spring, can play a guiding and limiting role on the limit rod when the No. 1 connecting piece fails, thereby increasing the service life of the device.

[0032] (5) The lifting type pressure relief manhole cover can play the role of installing the stainless steel anti-fall ring through the cooperation of bolts, assembly plates, stainless steel anti-fall rings and supports, which is convenient for the assembly of the stainless steel anti-fall ring and reduces the possibility of the stainless steel anti-fall ring being lost or damaged.

[0033] (6) The lifting pressure relief manhole cover can realize real-time monitoring, real-time alarm, networking and digitization through the intelligent sensor set on the stainless steel plate, making the manhole cover intelligent. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 This is a schematic diagram of the manhole cover structure of the present invention;

[0036] Figure 3 This is a schematic diagram of the cross-sectional structure of the manhole cover of the present invention;

[0037] Figure 4 This is a schematic diagram of the connection structure between the circular clamping block and the No. 1 spring of the present invention;

[0038] Figure 5 This is a schematic diagram of the connection structure between the extension block and the second spring of the present invention;

[0039] Figure 6 This is a schematic diagram of the top view of the tube body of the present invention;

[0040] Figure 7 This is a schematic diagram of the connection structure between the pipe body and the fixed block of the present invention;

[0041] Figure 8 This is a schematic diagram of the connection structure between the support and the assembly plate of the present invention;

[0042] Figure 9 This is a schematic diagram of the assembly plate and bolt connection structure of the present invention.

[0043] In the figure: 1. Tube body; 2. Annular groove; 3. Manhole cover; 4. Unlocking hole; 5. Stainless steel plate; 6. Guide column; 7. Connector No. 1; 701. Annular plate; 702. Circular groove No. 1; 703. Circular groove No. 2; 8. Connector No. 2; 801. Annular block; 802. Waist-shaped groove; 803. Spring No. 2; 9. Support member; 901. Support; 902. Placement groove; 903. Assembly plate; 904. Bolt; 10. Fixed block; 11. Sliding groove; 12. Removal groove; 13. Stainless steel anti-fall ring; 14. Vertical and horizontal steel bars; 15. Intelligent sensor; 16. Drive groove; 17. Accommodation groove; 18. Circular clamping block; 19. Spring No. 1; 20. Extension block; 21. Cylindrical groove; 22. Limit rod; 23. Handle; 24. Horizontal connecting rod; 25. Connecting column. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] like Figure 1-9 As shown, the present invention provides a technical solution: a lifting type pressure relief manhole cover, comprising a pipe body 1 and a manhole cover 3 located in the pipe body 1 and sealing the pipe body 1, the manhole cover 3 is connected to the pipe body 1 through an annular groove 2, the lower end surface of the manhole cover 3 in the pipe body 1 is provided with a guide column 6 along the direction of the pipe body 1, the outer side of the guide column 6 is provided with a fixed block 10 located in the pipe body 1 and slidably connected to the guide column 6, the fixed block 10 is fixedly connected to the inner wall of the pipe body 1, a sliding groove 11 along the vertical direction is opened in the fixed block 10, the fixed block 10 is connected to the guide column 6 through the sliding groove 11, and a column along the vertical direction is opened in the guide column 6 shaped groove 21, a locking limit device is provided in the cylindrical groove 21 for facilitating the assembly of the guide column 6 and the fixed block 10. The user can place the manhole cover 3 on the pipe body 1, and the annular groove 2 facilitates the connection between the manhole cover 3 and the pipe body 1. The guide column 6 slides inside the fixed block 10, so that the manhole cover 3 can be pushed open when the water volume in the pipe body 1 increases. The movement of the manhole cover 3 can drive the guide column 6 to slide inside the fixed block 10. The cooperation between the guide column 6 and the fixed block 10 can guide the sliding of the manhole cover 3. At the same time, the limiter can prevent the guide column 6 from falling off when sliding inside the fixed block 10.

[0046] like Figure 3The locking limit device includes a limit rod 22 located in the cylindrical groove 21 and along the vertical direction. The limit rod 22 and the guide column 6 form a rotating structure through the cylindrical groove 21. The end of the limit rod 22 away from the manhole cover 3 is provided with a transverse connecting rod 24 located below the fixed block 10. The transverse connecting rod 24 and the limit rod 22 are an integrated structure. The length of the transverse connecting rod 24 is greater than the diameter of the sliding groove 11. The end of the limit rod 22 away from the transverse connecting rod 24 is provided with a handle 23. The size of the handle 23 is greater than the size of the cylindrical groove 21. An unlocking hole 4 is provided on the manhole cover 3 to facilitate the rotation of the handle 23. The user can reach into the unlocking hole 4 and then manually control The rotation of the handle 23 can control the rotation of the limit rod 22, and further control the rotation of the transverse connecting rod 24. The cooperation between the transverse connecting rod 24 and the fixed block 10 can play a limiting and locking role on the connection between the guide column 6 and the fixed block 10. The guide column 6 will not fall out of the fixed block 10 during the sliding process. When the water level in the pipe body 1 drops, the manhole cover 3 will drop under the action of its own gravity. The drop of the manhole cover 3 can drive the guide column 6 to drop with the fixed block 10, so that the manhole cover 3 can be automatically reset. At the same time, the anti-theft function of the manhole cover 3 can be enhanced by the action of the locking limit device, reducing the possibility of the manhole cover 3 being stolen.

[0047] like Figure 6 , the outer side of the sliding groove 11 is provided with a removal groove 12 that passes through the sliding groove 11 and along the direction of the guide column 6. The size of the removal groove 12 is adapted to the size of the transverse connecting rod 24. A No. 1 connecting piece 7 for controlling the rotation of the limit rod 22 is provided in the guide column 6. The rotation of the handle 23 can drive the rotation of the limit rod 22. The No. 1 connecting piece 7 can limit the rotation of the limit rod 22. The rotation of the limit rod 22 can drive the rotation of the transverse connecting rod 24 fixedly connected to the limit rod 22. Through the cooperation of the transverse connecting rod 24 and the removal groove 12, the user can pull the manhole cover 3 to move away from the pipe body 1. The movement of the manhole cover 3 can drive the guide column 6 to move out of the fixed block 10, thereby facilitating the installation and disassembly of the manhole cover 3 and the pipe body 1;

[0048] like Figure 4The first connecting member 7 includes an annular plate 701 located in the cylindrical groove 21, the annular plate 701 is rotatably connected to the limiting rod 22, and a first circular groove 702 is provided in the annular plate 701. The first circular groove 702 is located above the removal groove 12. The first circular groove 702 and the removal groove 12 are located on the same vertical line. The outer side of the first circular groove 702 is provided with a second circular groove 703 located on the inner surface of the annular plate 701. The first circular groove 702 and the second circular groove 703 have the same size. The limiting rod 22 is provided with a accommodating The circular block 18 that is adapted to the No. 1 circular groove 702 and the No. 2 circular groove 703 is slidably connected in the receiving groove 17. The circular block 18 is connected to the receiving groove 17 by a No. 1 spring 19. The user grasps the handle 23 and manually rotates the handle 23. The rotation of the handle 23 can drive the rotation of the limiting rod 22 in the cylindrical groove 21. The rotation of the limiting rod 22 can drive the rotation of the circular block 18 on the limiting rod 22. When the circular block 18 contacts the inner wall of the annular plate 701, the pressure of the inner wall of the annular plate 701 is applied. The circular card block 18 moves into the accommodating groove 17, and the No. 1 spring 19 is compressed. When the circular card block 18 rotates to the No. 1 circular groove 702, the No. 1 spring 19 rebounds, pushing the circular card block 18 into the No. 1 circular groove 702. The cooperation between the circular card block 18 and the No. 1 circular groove 702 facilitates the fixed connection between the limit rod 22 and the guide column 6. Since the No. 1 circular groove 702 is located above the removal groove 12, the user can grab the manhole cover 3 and move it upward to drive the guide column 6 to move upward. The movement of the guide column 6 can bring The movable transverse connecting rod 24 is removed from the removal groove 12, which facilitates the fixed connection and disassembly of the guide column 6 and the tube body 1. When the user grasps the handle 23 and continues to rotate it, the circular clamping block 18 can be driven to move out of the No. 1 circular groove 702. The No. 1 spring 19 is compressed until it rotates into the No. 2 circular groove 703. The No. 1 spring 19 rebounds and pushes the circular clamping block 18 to slide into the No. 2 circular groove 703. At this time, the transverse connecting rod 24 is disconnected from the removal groove 12, thereby reducing the possibility of the guide column 6 moving out of the fixed block 10.

[0049] like Figure 3 A second connecting piece 8 is provided on the outer side of the limiting rod 22 to limit the rotation of the limiting rod 22. The second connecting piece 8 is located in the cylindrical groove 21. When the first connecting piece 7 fails, the second connecting piece 8 can be limited by the second connecting piece 8, further reducing the possibility of the guide column 6 falling out of the fixing block 10, and reducing the possibility of the manhole cover 3 being washed away by water or stolen.

[0050] like Figure 5The second connecting member 8 includes an annular block 801 located on the outside of the annular plate 701 in the cylindrical groove 21. The outer surface of the annular block 801 is fixedly connected to the inner wall of the cylindrical groove 21. A waist-shaped groove 802 is provided in the annular block 801. An extension block 20 is provided on the limiting rod 22. The extension block 20 extends into the waist-shaped groove 802. The extension block 20 and the annular block 801 are slidably connected through the waist-shaped groove 802. The extension block 20 is fixedly connected to the inner wall of the waist-shaped groove 802 through the second spring 803. The extension block 20 is located above the transverse connecting rod 24. The extension block 20 and the transverse connecting rod 24 are distributed along the same vertical line. The second spring 803 can limit the sliding of the extension block 20 in the waist-shaped groove 802. , and when the No. 2 spring 803 is not under force, it will drive the extension block 20 to be located near the No. 2 cylindrical groove. When the user needs to move out the manhole cover 3, the user can grab the handle 23 and then rotate the handle 23. The rotation of the handle 23 can drive the rotation of the limit rod 22, and the rotation of the limit rod 22 can drive the rotation of the transverse connecting rod 24. At this time, the No. 2 spring 803 is compressed. When the transverse connecting rod 24 is rotated to be located below the removal groove 12, the user can move the guide column 6 out of the fixed block 10, and then move the manhole cover 3 out of the pipe body 1. Through the cooperation of the extension block 20, the annular block 801 and the No. 2 spring 803, the limit rod 22 can be guided and limited when the No. 1 connecting member 7 fails, thereby improving the service life of the device.

[0051] like Figure 6 A stainless steel anti-fall ring 13 is provided below the fixed block 10 and is located inside the tube body 1. Vertical and horizontal steel bars 14 are welded inside the stainless steel anti-fall ring 13. A support member 9 is provided on the outside of the stainless steel anti-fall ring 13 to support the stainless steel anti-fall ring 13. The support member 9 can support and limit the stainless steel anti-fall ring 13, which is convenient for the assembly of the stainless steel anti-fall ring 13. At the same time, it reduces the possibility of loss or damage of the stainless steel anti-fall ring 13 and increases the service life of the device.

[0052] like Figure 8The support member 9 includes a support 901 located in the tube body 1, and the support 901 is fixedly connected to the inner wall of the tube body 1. A placement groove 902 is provided on the side of the support 901 away from the tube body 1 to support the stainless steel anti-fall ring 13. The support 901 is hingedly connected to an assembly plate 903 located on the support 901. The assembly plate 903 and the support 901 are connected by bolts 904 that pass through the stainless steel anti-fall ring 13. When the user installs the stainless steel anti-fall ring 13, the assembly plate 903 can be rotated open, and then the stainless steel anti-fall ring 13 is placed in the placement groove 902 on the support 901, and then the assembly plate 903 is rotated in the opposite direction so that the assembly plate 903 is parallel to the support 901. At this time, the bolt 904 passes through the assembly plate 903, the stainless steel anti-fall ring 13 and the support 901, and is fastened by a nut, which can play an installation role for the stainless steel anti-fall ring 13, facilitate the assembly of the stainless steel anti-fall ring 13, and reduce the possibility of loss or damage of the stainless steel anti-fall ring 13.

[0053] like Figure 3 , a connecting column 25 is provided on the side of the manhole cover 3 close to the guide column 6, and a stainless steel plate 5 is fixedly connected to the side of the connecting column 25 away from the manhole cover 3. The stainless steel plate 5 is fixedly connected to the guide column 6. The connecting column 25, the manhole cover 3 and the stainless steel plate 5 form a driving groove 16. The driving groove 16 is connected to the unlocking hole 4. The limiting rod 22 extends out of the guide column 6, and the extended part of the limiting rod 22 passes through the stainless steel plate 5. One end of the limiting rod 22 extending out of the stainless steel plate 5 is fixedly connected to the handle 23. The user can control the rotation of the handle 23 in the driving groove 16 through the unlocking hole 4, and then control the rotation of the limiting rod 22, reducing the possibility of non-staff operating the handle 23 to cause the manhole cover 3 to be lost.

[0054] like Figure 2 An intelligent sensor 15 is provided on the side of the stainless steel plate 5 away from the manhole cover 3 for real-time monitoring of the water condition in the pipe body 1. The intelligent sensor 15 provided on the stainless steel plate 5 can realize real-time monitoring, real-time alarm, networking and digitization, thereby realizing the intelligence of the manhole cover 3.

[0055] When in use, the user can place the manhole cover 3 on the pipe body 1. The annular groove 2 facilitates the connection between the manhole cover 3 and the pipe body 1. The guide column 6 slides inside the fixed block 10, so that the manhole cover 3 can be pushed open when the water volume in the pipe body 1 increases. The movement of the manhole cover 3 can drive the guide column 6 to slide inside the fixed block 10. The cooperation between the guide column 6 and the fixed block 10 can guide the sliding of the manhole cover 3.

[0056] When the manhole cover 3 needs to be removed, the user can enter the interior of the drive groove 16 through the unlocking hole 4, and then manually control the rotation of the handle 23. The rotation of the handle 23 can drive the rotation of the limit rod 22 in the guide column 6, and the rotation of the limit rod 22 can drive the rotation of the circular block 18 on the limit rod 22. When the circular block 18 contacts the inner wall of the annular plate 701, the circular block 18 moves into the accommodating groove 17 through the pressure of the inner wall of the annular plate 701, and the No. 1 spring 19 is compressed. When the circular block 18 rotates to the No. 1 circular groove 702, the No. 1 spring 19 The rebound pushes the circular block 18 into the No. 1 circular groove 702. The cooperation between the circular block 18 and the No. 1 circular groove 702 facilitates the fixed connection between the limit rod 22 and the guide column 6, reducing the possibility of the limit rod 22 rotating due to the push of water during use. Since the No. 1 circular groove 702 is located above the removal groove 12, the user can grasp the manhole cover 3 and move it upward to drive the guide column 6 to move upward. The movement of the guide column 6 can drive the transverse connecting rod 24 to move out of the removal groove 12, facilitating the disassembly of the guide column 6 and the pipe body 1, and further facilitating the disassembly of the manhole cover 3.

[0057] When the user grasps the handle 23 and continues to rotate it, the circular block 18 is driven to move out of the No. 1 circular groove 702, and the No. 1 spring 19 is compressed. When the block 18 is rotated into the No. 2 circular groove 703, the No. 1 spring 19 rebounds, pushing the circular block 18 to slide into the No. 2 circular groove 703. At this time, the transverse connecting rod 24 is disconnected from the removal groove 12, thereby reducing the possibility of the guide column 6 moving out of the fixed block 10.

[0058] At the same time, the No. 2 spring 803 can limit the sliding of the extension block 20 in the waist-shaped groove 802, and when the No. 2 spring 803 is not under force, it will drive the extension block 20 to be located near the No. 2 cylindrical groove. When the user needs to move out the manhole cover 3, the user can grab the handle 23 and then turn the handle 23. The rotation of the handle 23 can drive the rotation of the limit rod 22, and the rotation of the limit rod 22 can drive the rotation of the transverse connecting rod 24. At this time, the No. 2 spring 803 is compressed. When the transverse connecting rod 24 is rotated to be located below the removal groove 12, the user can move the guide column 6 out of the fixed block 10, and then move the manhole cover 3 out of the pipe body 1. Through the cooperation of the extension block 20, the annular block 801 and the No. 2 spring 803, the limit rod 22 can be guided and limited when the No. 1 connecting member 7 fails, thereby improving the service life of the device.

[0059] The cooperation between the transverse connecting rod 24 and the fixing block 10 can play a role in limiting and locking the connection between the guide column 6 and the fixing block 10. The guide column 6 will not fall out of the fixing block 10 during the sliding process. When the water level in the pipe body 1 drops, the manhole cover 3 will drop under the action of its own gravity. The drop of the manhole cover 3 can drive the guide column 6 to drop with the fixing block 10, so that the manhole cover 3 can be automatically reset. At the same time, the anti-theft function of the manhole cover 3 can be enhanced by the action of the limiter, reducing the possibility of the manhole cover 3 being stolen.

[0060] The stainless steel anti-fall ring 13 increases the service life of the device, reduces the possibility of damage to the stainless steel anti-fall ring 13, and increases the service life of the stainless steel anti-fall ring 13;

[0061] When the user installs the stainless steel anti-fall ring 13, the user can rotate the assembly plate 903 to open it, and then place the stainless steel anti-fall ring 13 in the placement groove 902 on the support 901, and then rotate the assembly plate 903 in the opposite direction so that the assembly plate 903 and the support 901 are kept in a horizontal state. At this time, the bolt 904 passes through the assembly plate 903, the stainless steel anti-fall ring 13 and the support 901, and is fastened by the nut, which can play an installation role for the stainless steel anti-fall ring 13, facilitates the assembly of the stainless steel anti-fall ring 13, and reduces the possibility of the stainless steel anti-fall ring 13 being lost or damaged;

[0062] The intelligent sensor 15 provided on the stainless steel plate 5 can realize real-time monitoring, real-time alarm, networking and digitization, and realize the intelligence of the manhole cover 3. This is the use process of the lifting pressure relief manhole cover. At the same time, the contents not described in detail in this manual belong to the existing technology known to professional and technical personnel in this field.

[0063] In summary, the lifting pressure relief manhole cover slides inside the fixed block 10 through the guide column 6 during use, so that the manhole cover 3 can be pushed open when the water volume in the pipe body 1 increases. The movement of the manhole cover 3 can drive the guide column 6 to slide inside the fixed block 10. The cooperation between the guide column 6 and the fixed block 10 can guide the sliding of the manhole cover 3. At the same time, the rotation of the handle 23 can drive the rotation of the limit rod 22 in the guide column 6. The rotation of the limit rod 22 can drive the rotation of the circular block 18 on the limit rod 22. When the circular block 18 rotates to the No. 1 circular groove 702, the first spring 19 rebounds and pushes the circular block 18 into the first circular groove 702. The cooperation between the circular block 18 and the first circular groove 702 facilitates the fixed connection between the limit rod 22 and the guide column 6, reducing the possibility of the limit rod 22 rotating due to the water flow during use. When the limit rod 22 rotates until it reaches the second circular groove 703, the first spring 19 rebounds and pushes the circular block 18 to slide into the second circular groove 703. At this time, the horizontal connecting rod 24 is disconnected from the removal groove 12, thereby reducing the guide column 6 from the fixed block 10 The possibility of moving out of the manhole cover 3 is eliminated, and the cooperation of the transverse connecting rod 24 and the fixing block 10 can play a limiting locking role on the connection between the guide column 6 and the fixing block 10. The guide column 6 will not fall out of the fixing block 10 during the sliding process, and when the water level in the pipe body 1 drops, the manhole cover 3 will drop under the action of its own gravity. The drop of the manhole cover 3 can drive the guide column 6 to drop with the drop of the fixing block 10, which can realize the automatic reset of the manhole cover 3. At the same time, the anti-theft function of the manhole cover 3 can be enhanced by the action of the limiter, reducing the possibility of the manhole cover 3 being stolen. The cooperation of the No. 2 spring 803 can play a guiding and limiting role on the limit rod 22 when the No. 1 connecting part 7 fails, thereby increasing the service life of the device. However, through the cooperation of the bolt 904, the assembly plate 903, the stainless steel anti-fall ring 13 and the support 901, the stainless steel anti-fall ring 13 can be installed, which facilitates the assembly of the stainless steel anti-fall ring 13 and reduces the possibility of loss or damage of the stainless steel anti-fall ring 13. Afterwards, the smart sensor 15 set on the stainless steel plate 5 can realize real-time monitoring, real-time alarm, networking, and digitization, thereby realizing the intelligence of the manhole cover 3.

[0064] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0065] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A lifting type pressure relief manhole cover, comprising a pipe body (1) and a manhole cover (3) located in the pipe body (1) and sealing the pipe body (1), characterized in that: The manhole cover (3) is connected to the pipe body (1) via an annular groove (2); a guide column (6) is provided on the lower end surface of the manhole cover (3) in the pipe body (1) along the direction of the pipe body (1); a fixed block (10) is provided on the outer side of the guide column (6) and is located in the pipe body (1) and is slidably connected to the guide column (6); the fixed block (10) is fixedly connected to the inner wall of the pipe body (1); a sliding groove (11) along the vertical direction is provided in the fixed block (10); the fixed block (10) and the guide column (6) are connected via the sliding groove (11); a columnar groove (21) along the vertical direction is provided in the guide column (6); a locking and limiting device is provided in the columnar groove (21) for facilitating the assembly of the guide column (6) and the fixed block (10); The locking and limiting device comprises a limiting rod (22) located in the cylindrical groove (21) and along the vertical direction, the limiting rod (22) and the guide column (6) form a rotating structure through the cylindrical groove (21), the end of the limiting rod (22) away from the manhole cover (3) is provided with a transverse connecting rod (24) located below the fixed block (10), the transverse connecting rod (24) and the limiting rod (22) are an integrated structure, the length of the transverse connecting rod (24) is greater than the diameter of the sliding groove (11), the end of the limiting rod (22) away from the transverse connecting rod (24) is provided with a handle (23), the size of the handle (23) is greater than the size of the cylindrical groove (21), and the manhole cover (3) is provided with an unlocking hole (4) for driving the handle (23) to rotate; The outer side of the sliding groove (11) is provided with a removal groove (12) which is connected with the sliding groove (11) and along the direction of the guide column (6); the size of the removal groove (12) is adapted to the size of the transverse connecting rod (24); and a No. 1 connecting piece (7) for controlling the rotation of the limit rod (22) is provided in the guide column (6); The No. 1 connecting member (7) comprises an annular plate (701) located in the cylindrical groove (21), the annular plate (701) being rotatably connected to the limiting rod (22), a No. 1 circular groove (702) being provided in the annular plate (701), the No. 1 circular groove (702) being located above the removal groove (12), the No. 1 circular groove (702) and the removal groove (12) being located on the same vertical line, and a positioning groove (702) being provided on the outer side of the No. 1 circular groove (702). A No. 2 circular groove (703) is formed on the inner surface of the annular plate (701), the No. 1 circular groove (702) and the No. 2 circular groove (703) have the same size, a receiving groove (17) is provided in the limiting rod (22), a circular clamping block (18) adapted to the No. 1 circular groove (702) and the No. 2 circular groove (703) is slidably connected in the receiving groove (17), and the circular clamping block (18) is connected to the receiving groove (17) via a No. 1 spring (19); A second connecting piece (8) is provided on the outer side of the limiting rod (22) for limiting the rotation of the limiting rod (22), and the second connecting piece (8) is located in the cylindrical groove (21); The second connecting member (8) includes an annular block (801) located outside the annular plate (701) in the cylindrical groove (21), the outer surface of the annular block (801) is fixedly connected to the inner wall of the cylindrical groove (21), a waist-shaped groove (802) is provided in the annular block (801), an extension block (20) is provided on the limiting rod (22), the extension block (20) extends into the waist-shaped groove (802), the extension block (20) and the annular block (801) are slidably connected through the waist-shaped groove (802), the extension block (20) and the inner wall of the waist-shaped groove (802) are fixedly connected through a second spring (803), the extension block (20) is located above the transverse connecting rod (24), and the extension block (20) and the transverse connecting rod (24) are distributed along the same vertical line; A connecting column (25) is provided on a side of the manhole cover (3) close to the guide column (6); a stainless steel plate (5) is fixedly connected to a side of the connecting column (25) away from the manhole cover (3); the stainless steel plate (5) is fixedly connected to the guide column (6); the connecting column (25), the manhole cover (3) and the stainless steel plate (5) form a driving groove (16); the driving groove (16) is connected to the unlocking hole (4); the limiting rod (22) extends out of the guide column (6); an extended portion of the limiting rod (22) passes through the stainless steel plate (5); and one end of the limiting rod (22) extending out of the stainless steel plate (5) is fixedly connected to the handle (23).

2. The lifting type pressure relief manhole cover according to claim 1 is characterized in that: A stainless steel anti-falling ring (13) located inside the tube body (1) is provided below the fixing block (10), longitudinal and transverse steel bars (14) are welded inside the stainless steel anti-falling ring (13), and a support member (9) for supporting the stainless steel anti-falling ring (13) is provided on the outer side of the stainless steel anti-falling ring (13).

3. The lifting type pressure relief manhole cover according to claim 2 is characterized in that: The support member (9) comprises a support (901) located inside the tube body (1), the support (901) being fixedly connected to the inner wall of the tube body (1), a placement groove (902) for supporting the stainless steel anti-fall ring (13) being provided on a side of the support (901) away from the tube body (1), an assembly plate (903) located on the support (901) being hingedly connected to the support (901), and the assembly plate (903) being connected to the support (901) via a bolt (904) passing through the stainless steel anti-fall ring (13).

4. The lifting type pressure relief manhole cover according to claim 3 is characterized in that: An intelligent sensor (15) for real-time monitoring of the water condition in the pipe body (1) is provided on the side of the stainless steel plate (5) away from the manhole cover (3).

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