Road manhole structure

Abstract

The utility model discloses a road inspection well structure, include: well lid subassembly, it is embedded in the road surface of road, well lid subassembly includes base and well lid, and the base is the tubular structure of both ends opening, and the well lid is embedded and covers on the opening of base top -end and is passed through and is set up on it several rainwater mouth, lifting subassembly is used for driving well lid to lift relative base, and lifting subassembly includes support and water collector, and the support can be erected in the cavity of base, and the push rod is slidably connected on the support along its axial direction, and the water collector is located just below the support, and the transmission mechanism for the transmission connection between water collector and push rod is equipped on the support, and the top surface of water collector is set up with several water inlets and the bottom surface is set up with the drain outlet. The utility model can improve the bearing effect of well lid, accelerate the reduction of rainwater on the road in rainy days, and reduce the use limit, reduce the difficulty of maintenance and replacement when the fault appears in long -time use in later period.

Description

Technical Field

[0001] This utility model relates to the field of municipal drainage facilities, specifically to a road manhole structure. Background Technology

[0002] In existing manhole structures with liftable covers, the manhole cover is usually lifted by a water-collecting container suspended inside the manhole. As the container collects rainwater and its weight increases, the cover is pulled up by gravity through a transmission mechanism inside the manhole.

[0003] To ensure stable lifting of manhole covers, multiple transmission mechanisms are often installed around them. These mechanisms are typically located within the manhole casing, significantly increasing the casing's diameter and consequently the overall diameter of the manhole. This limits the manhole's installation capacity due to the available space on site, thus restricting its use. Furthermore, it increases the difficulty of repair and replacement when the manhole cover lifting mechanism malfunctions, especially when the transmission mechanism is damaged and cannot be repaired by replacing parts. In such cases, the entire manhole casing must be replaced, greatly increasing the difficulty and cost of repair. Utility Model Content

[0004] The purpose of this utility model is to provide a road manhole structure that can improve the load-bearing capacity of the manhole cover, accelerate the reduction of rainwater on roads during rainy days, reduce usage restrictions, and reduce the difficulty of maintenance and replacement when malfunctions occur during long-term use.

[0005] The technical solution adopted by this utility model to solve the above problems is:

[0006] The structure of a road manhole includes:

[0007] Manhole cover assembly, which is embedded in the road surface, includes a base and a manhole cover. The base is a cylindrical structure with openings at both ends. The manhole cover is embedded in and covers the opening at the top of the base and has several rainwater inlets through it.

[0008] A lifting assembly is used to drive the manhole cover to lift relative to the base. The lifting assembly includes a bracket and a water receiver. The bracket can be installed in the cavity of the base. A push rod is slidably connected to the bracket along its axial direction. The central axes of the manhole cover, the bracket, and the push rod are all on the same straight line, and the top of the push rod abuts against the bottom surface of the manhole cover from bottom to top. The water receiver is located directly below the bracket. The bracket is provided with a transmission mechanism for the transmission connection between the water receiver and the push rod. The water receiver is hung on the bracket through the transmission mechanism and can move relative to the bracket along the axial direction of the bracket. The direction of movement of the water receiver relative to the bracket is opposite to the direction of movement of the push rod relative to the bracket. Several water inlets are opened on the top surface of the water receiver and a drain outlet is opened on its bottom surface.

[0009] As a further improvement to the above technical solution, the transmission mechanism includes at least three transmission plates arranged at equal angles around the central axis of the support. The two ends of the transmission plates are hinged to the support. The inner end of the transmission plate is rotatably and slidably connected to the push rod, and a connecting rope is provided between its outer end and the water receiver. The transmission plate and the water receiver are connected by the connecting rope.

[0010] As a further improvement to the above technical solution, both ends of the connecting rope are fixed with ring buckles, and the outer end of the transmission plate is provided with a first connecting hole for ring buckle connection. The distance from the central axis of the first connecting hole to the bottom surface of the transmission plate is greater than the distance from the central axis of the first connecting hole to the top surface of the transmission plate. The bracket is provided with a second connecting hole for ring buckle connection.

[0011] As a further improvement to the above technical solution, the water receiver includes a top cover and a container. The top cover is conical, and the water inlet is located on the top cover. The container is a hollow structure with an open top and a closed bottom. The container is provided with connecting pieces that correspond one-to-one with the transmission pieces. A second connecting hole is opened on the connecting piece. The top cover is provided with a slot for the connecting piece to pass through. The drain outlet is located at the center of the bottom surface of the container. The bottom of the container is shaped like an inverted frustum.

[0012] As a further improvement to the above technical solution, the bracket includes a first tube and a second tube. Both the first tube and the second tube are hollow structures with openings at both ends and are both sleeved on the push rod. The bottom end of the first tube is inserted into and fixed to the top end of the second tube, and the central axes of the two are on the same straight line. The second tube is provided with at least three extensions for mounting the second tube in the cavity of the base. Each extension is arranged at an equal angle around the central axis of the second tube.

[0013] As a further improvement to the above technical solution, the base includes an upper ring seat and a lower ring seat. Both the upper and lower ring seats are cylindrical structures with openings at both ends, and their outer surfaces are provided with a number of corresponding mating blocks. The mating blocks are provided with mating holes for bolts to pass through. The inner surface of the upper ring seat is provided with at least three first support blocks for supporting the manhole cover. The manhole cover is provided with a number of limiting blocks that correspond one-to-one with the first support blocks. When the manhole cover is installed on the base, the limiting blocks are fitted onto the corresponding first support blocks. The inner surface of the lower ring seat is provided with a number of second support blocks that correspond one-to-one with the extension. When the upper and lower ring seats are connected, the bottom end of the upper ring seat is fitted onto the top end of the lower ring seat.

[0014] As a further improvement to the above technical solution, a first ring piece is provided on the top of the upper ring seat. The first ring piece is sleeved and integrally connected to the upper ring seat, and the top surfaces of the two are on the same horizontal plane. A second ring piece is provided on the bottom of the lower ring seat. The second ring piece is sleeved and integrally connected to the lower ring seat, and the bottom surfaces of the two are on the same horizontal plane. Several through holes are provided on the second ring piece.

[0015] As a further improvement to the above technical solution, the cross-section of the extension is inverted T-shaped, and a hook hole is provided on the outer end of the longitudinal part of the extension. The distance from the central axis of the hook hole to the top surface of the longitudinal part is greater than the distance from the central axis of the hook hole to the top surface of the transverse part of the extension. A tension spring is hooked on the hook hole, and a protrusion for the tension spring to hook is provided on the manhole cover. A through hole is provided on the manhole cover at the position corresponding to the protrusion.

[0016] As a further improvement to the above technical solution, the push rod includes a tube body and a stop block. The bottom end of the tube body is inserted into the support along the axial direction of the support, and the bottom end of the stop block is inserted into the top end of the tube body, with the end face of the top end being spherical. The manhole cover has a receiving groove that matches the top end of the stop block.

[0017] Compared with the prior art, this utility model has the following advantages and effects:

[0018] (1) Through the structural arrangement between the manhole cover assembly and the lifting assembly, this utility model can support the manhole cover with the bracket and lift the manhole cover relative to the base when the rain increases in rainy weather. This improves the load-bearing capacity of the manhole cover, reduces the risk of damage to the manhole cover due to external crushing, and speeds up the reduction of rainwater on the road in rainy weather, thus reducing the safety hazards caused by excessive rainwater on the road.

[0019] (2) By using the structure of the lifting component and its placement on the manhole cover component, this utility model reduces the impact of the use of the lifting component in the manhole on the structure of the manhole cover component. This allows the lifting component to be installed as an independent module in the manhole, reducing the limitations of the lifting component and facilitating repair and replacement when a fault occurs during long-term use. In addition, the lifting component can also prevent people from falling into the manhole when the manhole cover is damaged. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the road manhole of this utility model.

[0021] Figure 2 This is an enlarged schematic diagram of a partial structure of the road manhole of this utility model.

[0022] Figure 3 yes Figure 2 The diagram shows a partial enlarged view of the water receiving device.

[0023] Figure 4 yes Figure 2 The diagram shows the structure of the water receiver.

[0024] Figure 5 yes Figure 1 The diagram shows the structure of the support.

[0025] Figure 6 yes Figure 5 The diagram shows a partial enlarged view of the support structure.

[0026] Figure 7 This is an enlarged schematic diagram of a partial structure of the road manhole of this utility model.

[0027] Figure 8 yes Figure 1 The diagram shows the structure of the base.

[0028] Figure 9 yes Figure 8 The diagram shows an enlarged view of the structure between the base and the manhole cover.

[0029] Figure 10 yes Figure 5 The diagram shows an enlarged view of the structure of part two of the support shown.

[0030] The components include: manhole cover assembly 1, base 11, manhole cover 12, rainwater inlet 13, lifting assembly 2, bracket 21, water receiver 22, push rod 23, water inlet 24, drain outlet 25, transmission mechanism 3, transmission plate 31, connecting rope 32, hinge hole 33, ring buckle 34, first connecting hole 35, second connecting hole 36, top cover 41, container 42, connecting plate 43, slot 44, first pipe body 51, second pipe body 52, extension 53, longitudinal part 54, hook hole 55, transverse part 56, tension spring 57, protruding post 58, through hole 59, upper ring seat 61, lower ring seat 62, docking block 63, docking hole 64, first support block 65, limiting block 66, second support block 67, rubber pad 68, first ring piece 71, second ring piece 72, perforation 73, pipe body 81, abutting block 82, and receiving groove 83. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0032] See Figures 1-10This embodiment of the road manhole structure includes a manhole cover assembly 1 and a lifting assembly 2. The manhole cover assembly 1 is embedded in the road surface and includes a base 11 and a manhole cover 12. The base 11 is a cylindrical structure with openings at both ends. The manhole cover 12 is embedded in and covers the opening at the top of the base 11, and has several rainwater inlets 13 extending through it. The lifting assembly 2 is used to drive the manhole cover 12 to lift relative to the base 11. The lifting assembly 2 includes a bracket 21 and a water collector 22. The bracket 21 can be mounted in the cavity of the base 11. A push rod 23 is slidably connected to the bracket 21 along its axial direction. The central axes of the manhole cover 12, the bracket 21, and the push rod 23 are all on the same straight line, and the top of the push rod 23 abuts against the bottom surface of the manhole cover 12 from bottom to top. The water collector 22 is located on the bracket 21. Directly below 1, the support 21 is provided with a transmission mechanism 3 for the transmission connection between the water receiver 22 and the push rod 23. The water receiver 22 is hung on the support 21 through the transmission mechanism 3 and can move relative to the support 21 along the axial direction of the support 21. The direction of movement of the water receiver 22 relative to the support 21 is opposite to the direction of movement of the push rod 23 relative to the support 21. Several water inlets 24 are opened on the top surface of the water receiver 22 and a drain outlet 25 is opened on its bottom surface. The diameter of the drain outlet 25 is larger than the diameter of the water inlets 24, so that debris (such as leaves and stones) entering the cavity of the water receiver 22 through the water inlets 24 can also be discharged from the water receiver 22 through the drain outlet 25, thereby reducing the risk that the water receiver 22 will be affected by the accumulation of debris in the cavity of the water receiver 22.

[0033] The transmission mechanism 3 includes at least three transmission plates 31 arranged at equal angles around the central axis of the support 21. The two ends of the transmission plates 31 are hinged to the support 21. The inner end of the transmission plate 31 is rotatably and slidably connected to the push rod 23, and a connecting rope 32 is provided between its outer end and the water receiver 22. The transmission plate 31 and the water receiver 22 are connected by the connecting rope 32.

[0034] When rainwater enters the base 11 through the manhole cover 12 during rainy weather, it enters the water collector 22 through the inlet 24 and exits through the outlet 25. As the rainfall intensifies, the amount of rainwater entering the base 11 increases, causing the amount of rainwater entering the water collector 22 to gradually exceed the amount of rainwater exiting from it. This results in a gradual increase in the weight of the water collector 22. When the weight of the water collector 22 reaches a certain level, it can drive the push rod 23 to slide upward relative to the bracket 21 under the action of gravity via the transmission plate 31 on the transmission mechanism 3, thereby lifting the manhole cover 12. After the manhole cover 12 moves relative to the base 11, a new area is formed between them for rainwater to enter the cavity of the base 11, accelerating the reduction of rainwater on the road and thus reducing the safety hazards caused by excessive rainwater accumulation on the road.

[0035] In this embodiment, the inner end of the transmission plate 31 is provided with a hinge hole 33 for connecting the push rod 23. The hinge hole 33 is an oblong hole, which allows the transmission plate 31 and the push rod 23 to move relative to each other, thereby reducing the risk of motion interference caused by the rotation of the transmission plate 31 relative to the support 21 due to the connection between the transmission plate 31 and the push rod 23.

[0036] See Figure 2 , Figure 3 Both ends of the connecting rope 32 are fixed with ring buckles 34. The outer end of the transmission plate 31 is provided with a first connecting hole 35 for connecting the ring buckles 34. The distance from the central axis of the first connecting hole 35 to the bottom surface of the transmission plate 31 is greater than the distance from the central axis of the first connecting hole 35 to the top surface of the transmission plate 31, which ensures the structural strength of the position where the ring buckles 34 on the transmission plate 31 abut when the water receiver 22 pulls down the outer end of the transmission plate 31. The bracket 21 is provided with a second connecting hole 36 for connecting the ring buckles 34, which improves the convenience of installing the water receiver 22 on the transmission plate 31.

[0037] See Figure 3 , Figure 4 The water receiver 22 includes a top cover 41 and a container 42. The top cover 41 is conical, which increases the water-receiving area of ​​the top surface of the water receiver 22. The water inlet 24 is located on the top cover 41. While ensuring the water receiver 22's rainwater collection effect, it can also guide debris in the rainwater to slide down the top surface of the water receiver 22, reducing the risk of the water inlet 24 becoming blocked. The container 42 is a hollow structure with an open top and a closed bottom. The container 42 is provided with connecting pieces 43 that correspond one-to-one with the transmission piece 31. The second connecting hole 36 is opened on the connecting piece 43. The top cover 41 is provided with a slot hole 44 for the connecting piece 43 to pass through. The drain outlet 25 is located at the center of the bottom surface of the container 42. The bottom of the container 42 is shaped like an inverted frustum. The modular structure of the water receiver 22 reduces the manufacturing difficulty of the hollow structure on the water receiver 22 and facilitates the cleaning of the cavity of the water receiver 22. At the same time, the connection between the ring buckle 34 and the connecting piece 43 can prevent the top cover 41 from detaching from the container 42, thereby improving the stability of the connection between the top cover 41 and the container 42.

[0038] See Figure 5The bracket 21 includes a first tube 51 and a second tube 52. Both the first tube 51 and the second tube 52 are hollow structures with openings at both ends and are both sleeved on the push rod 23. The bottom end of the first tube 51 is inserted into and fixed to the top end of the second tube 52, and their central axes are on the same straight line. The second tube 52 is provided with at least three extensions 53 for mounting the second tube 52 in the cavity of the base 11. Each extension 53 is arranged at an equal angle around the central axis of the second tube 52. Through the assembly structure of the bracket 21, the length of the first tube 51 can be changed to form brackets 21 of different heights, reducing the difficulty of manufacturing brackets 21 of different specifications and improving the convenience of adapting the lifting component 2 to bases 11 of different depths.

[0039] See Figure 6 , Figure 7 The extension 53 has an inverted T-shaped cross-section. A hook hole 55 is provided on the outer end of the longitudinal part 54 of the extension 53. The distance from the central axis of the hook hole 55 to the top surface of the longitudinal part 54 is greater than the distance from the central axis of the hook hole 55 to the top surface of the transverse part 56 of the extension 53. When the manhole cover 12 is lifted by the push rod 23 and the tension spring 57 is in an extended state, the structural strength of the hook position of the tension spring 57 on the extension 53 is guaranteed. The tension spring 57 is hooked on the hook hole 55. The manhole cover 12 is provided with a protrusion 58 for the tension spring 57 to hook. A through hole 59 is provided on the manhole cover 12 at the position corresponding to the protrusion 58. The tension spring 57 hooked on the protrusion 58 can be moved through the through hole 59 to release the connection between the tension spring 57 and the manhole cover 12, which makes it convenient to remove the manhole cover 12 from the base 11. The tension spring 57 between the bracket 21 and the manhole cover 12 ensures the stability of the manhole cover 12's movement trajectory when the push rod 23 lifts the manhole cover 12. When the push rod 23 releases its pushing effect on the manhole cover 12, it can pull the manhole cover 12 back to its original position. At the same time, it can also play a role in preventing theft and jumping of the manhole cover 12 to a certain extent.

[0040] See Figure 8 , Figure 9The base 11 includes an upper ring seat 61 and a lower ring seat 62. Both the upper ring seat 61 and the lower ring seat 62 are cylindrical structures with openings at both ends, and a number of corresponding mating blocks 63 are provided on their outer surfaces. The mating blocks 63 are provided with mating holes 64 for bolts to pass through. The inner surface of the upper ring seat 61 is provided with at least three first support blocks 65 for supporting the manhole cover 12. The manhole cover 12 is provided with a number of limiting blocks 66 corresponding to the first support blocks 65. When the manhole cover 12 is installed on the base 11, the limiting blocks 66 are fitted onto the corresponding first support blocks 65. This improves the stability of the relative position between the manhole cover 12 and the base 11 under normal conditions, and also ensures the stability of the manhole cover 12 moving relative to the base 11 under the drive of the push rod 23. The inner surface of the lower ring seat 62 is provided with a number of second support blocks 67 corresponding to the extension 53. When the upper ring seat 61 and the lower ring seat 62 are connected, the bottom end of the upper ring seat 61 is fitted onto the top end of the lower ring seat 62. The modular structure of the base 11 reduces the difficulty of manufacturing the well shaft using molds, improves the accuracy of the finished product structure, reduces the manufacturing defect rate, and ensures the effectiveness of the base 11.

[0041] In this embodiment, a rubber pad 68 is provided on the top surface of the first support block 65. When the limiting block 66 is sleeved on the first support block 65, the rubber pad 68 is sandwiched between the limiting block 66 and the first support block 65, which increases the friction between the limiting block 66 and the first support block 65, increases the difficulty of the manhole cover 12 shifting on the base 11 when a vehicle drives over the manhole cover 12, and reduces the noise generated by the contact and squeezing between the manhole cover 12 and the base 11, thus playing a role in noise reduction.

[0042] See Figure 8 The upper ring seat 61 has a first ring piece 71 at its top. The first ring piece 71 is fitted onto and integrally connected to the upper ring seat 61, and the top surfaces of both are on the same horizontal plane. This increases the exposed area of ​​the upper ring seat 61 on the road surface and the contact area between it and the road surface, thereby increasing the difficulty of the manhole cylinder sinking into the road surface due to the pressure of passing vehicles on the manhole cover 12. The lower ring seat 62 has a second ring piece 72 at its bottom end. The second ring piece 72 is fitted onto and integrally connected to the lower ring seat 62, and the bottom surfaces of both are on the same horizontal plane. The second ring piece 72 has several through holes 73, which increases the contact degree between the lower ring seat 62 and the ground and ensures the stability of the base 11 embedded in the road.

[0043] See Figure 9 , Figure 10The push rod 23 includes a tube body 81 and a stop block 82. The bottom end of the tube body 81 is inserted into the support 21 along the axial direction of the support 21. The bottom end of the stop block 82 is inserted into the top end of the tube body 81, and the end face of the top end is spherical. The manhole cover 12 is provided with a receiving groove 83 that matches the top end of the stop block 82. After the manhole cover 12 is lifted relative to the base 11, the manhole cover 12 can tilt relative to the push rod 23 when subjected to external force, thereby reducing the risk of damage to the push rod 23 and the support 21 caused by hard compression between the manhole cover 12 and the push rod 23.

[0044] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A road manhole structure, characterized in that, include: Manhole cover assembly, which is embedded in the road surface, includes a base and a manhole cover. The base is a cylindrical structure with openings at both ends. The manhole cover is embedded in and covers the opening at the top of the base and has several rainwater inlets through it. A lifting assembly is used to drive the manhole cover to lift relative to the base. The lifting assembly includes a bracket and a water receiver. The bracket can be installed in the cavity of the base. A push rod is slidably connected to the bracket along its axial direction. The central axes of the manhole cover, the bracket, and the push rod are all on the same straight line, and the top of the push rod abuts against the bottom surface of the manhole cover from bottom to top. The water receiver is located directly below the bracket. The bracket is provided with a transmission mechanism for the transmission connection between the water receiver and the push rod. The water receiver is hung on the bracket through the transmission mechanism and can move relative to the bracket along the axial direction of the bracket. The direction of movement of the water receiver relative to the bracket is opposite to the direction of movement of the push rod relative to the bracket. Several water inlets are opened on the top surface of the water receiver and a drain outlet is opened on its bottom surface.

2. The road manhole structure according to claim 1, characterized in that: The transmission mechanism includes at least three transmission plates arranged at equal angles around the central axis of the support. The two ends of the transmission plates are hinged to the support. The inner end of the transmission plate is rotatably and slidably connected to the push rod, and a connecting rope is provided between its outer end and the water receiver. The transmission plate and the water receiver are connected by the connecting rope.

3. The road manhole structure according to claim 2, characterized in that: Both ends of the connecting rope are fixed with rings, and the outer end of the transmission plate is provided with a first connecting hole for ring connection. The distance from the central axis of the first connecting hole to the bottom surface of the transmission plate is greater than the distance from the central axis of the first connecting hole to the top surface of the transmission plate. The bracket is provided with a second connecting hole for ring connection.

4. The road manhole structure according to claim 3, characterized in that: The water receiver includes a top cover and a container. The top cover is conical, and the water inlet is located on the top cover. The container is a hollow structure with an open top and a closed bottom. The container is provided with connecting plates that correspond one-to-one with the transmission plates. A second connecting hole is opened on the connecting plate. The top cover is provided with a slot for the connecting plate to pass through. The drain outlet is located at the center of the bottom surface of the container. The bottom of the container is shaped like an inverted frustum.

5. The road manhole structure according to claim 1 or 2, characterized in that: The support includes a first tube and a second tube. Both the first tube and the second tube are hollow structures with openings at both ends and are both sleeved on a push rod. The bottom end of the first tube is inserted into and fixed to the top end of the second tube, and the central axes of the two are on the same straight line. The second tube is provided with at least three extensions for mounting the second tube in the cavity of the base. Each extension is arranged at an equal angle around the central axis of the second tube.

6. The road manhole structure according to claim 5, characterized in that: The base includes an upper ring seat and a lower ring seat. Both the upper and lower ring seats are cylindrical structures with openings at both ends, and their outer surfaces are provided with a number of corresponding mating blocks. The mating blocks are provided with mating holes for bolts to pass through. The inner surface of the upper ring seat is provided with at least three first support blocks for supporting the manhole cover. The manhole cover is provided with a number of limiting blocks that correspond to the first support blocks. When the manhole cover is installed on the base, the limiting blocks are fitted onto the corresponding first support blocks. The inner surface of the lower ring seat is provided with a number of second support blocks that correspond to the extension. When the upper and lower ring seats are connected, the bottom end of the upper ring seat is fitted onto the top end of the lower ring seat.

7. The road manhole structure according to claim 6, characterized in that: The upper ring seat has a first ring piece at its top end. The first ring piece is fitted onto and integrally connected to the upper ring seat, and the top surfaces of both are on the same horizontal plane. The lower ring seat has a second ring piece at its bottom end. The second ring piece is fitted onto and integrally connected to the lower ring seat, and the bottom surfaces of both are on the same horizontal plane. The second ring piece has several through holes.

8. The road manhole structure according to claim 5, characterized in that: The cross-section of the extension is inverted T-shaped. A hook hole is provided on the outer end of the longitudinal part of the extension. The distance from the central axis of the hook hole to the top surface of the longitudinal part is greater than the distance from the central axis of the hook hole to the top surface of the transverse part of the extension. A tension spring is hooked on the hook hole. A protruding post is provided on the manhole cover for the tension spring to hook. A through hole is provided on the manhole cover at the position corresponding to the protruding post.

9. The road manhole structure according to claim 1, characterized in that: The push rod includes a tube and a stop block. The bottom end of the tube is inserted into the support along the axial direction of the support. The bottom end of the stop block is inserted into the top end of the tube and the end face of the top end is spherical. The manhole cover has a receiving groove that matches the top end of the stop block.

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