Push-pull well lid

Abstract

The invention relates to the technical field of road facilities, in particular to a push-pull type well lid which comprises a well frame and a well lid body, and the well frame and the well lid body are both rectangular frames. A left rail and a right rail are arranged in the well frame and extend in the front-back direction, a left supporting rod and a right supporting rod are arranged at the bottom of the well lid, a rolling wheel is rotationally arranged at the bottom of each supporting rod, and the rolling wheels are located in the rails. A rectangular bottom plate is arranged at the bottom of the well frame and provided with inner turnups located in the well frame, a left bent plate and a right bent plate are arranged in the well frame, the bent plates are fixedly arranged on the inner turnups, the rails are defined by the inner turnups, the bent plates and the corresponding well frame side walls, the bent plates are provided with supporting plates located above the idler wheels, and the supporting plates extend in the horizontal direction. A gap is formed between the supporting plate and the side wall of the well frame, when the rolling wheels roll back and forth along the rails, the supporting rods slide along the gap, the bottom of the well lid slides along the supporting plate, the rolling wheels are prevented from bearing the pressure of the well lid, and the service life of the push-pull type well lid is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of road facilities, in particular to a push-pull type manhole cover. BACKGROUND

[0002] The manhole cover is mainly used for the access hole of underground facilities. In order to facilitate the opening of the manhole cover, a push-pull type manhole cover is usually used.

[0003] The patent document with the announcement number CN214089998U discloses a push-pull type inspection well cover, which comprises a well frame and a well cover slidingly connected to the well frame. The inner walls of the well frame are oppositely distributed with tracks. The well cover is connected with rollers below. The rollers are correspondingly distributed with the tracks and slidingly connected to the tracks along the length direction of the slide. However, when a vehicle or a pedestrian passes above the well cover, the rollers need to bear a large gravity, which can easily cause damage and shorten the service life of the push-pull type manhole cover. SUMMARY

[0004] Therefore, it is necessary to provide a push-pull type manhole cover aiming at the technical problem of low service life of the current push-pull type manhole cover.

[0005] The above-mentioned purpose is achieved by the following technical scheme: The push-pull type manhole cover comprises a well frame and a well cover. Both the well frame and the well cover are rectangular frames. The well cover can be completely accommodated in the well frame or slid out of the well frame. The inside of the well frame is provided with two left and right tracks. The tracks extend along the front and back directions. The bottom of the well cover is provided with two left and right support rods. The support rods are inclinedly arranged along the up and down directions. The bottom of each support rod is rotatably provided with a roller. The roller is located in the track and can roll along the track in the front and back directions. The bottom of the well frame is provided with a rectangular bottom plate. The rectangular bottom plate has an inner turned edge located in the inside of the well frame. The inside of the well frame is provided with two left and right bent plates. The vertical section of the bent plate is in the shape of an inverted L. The L-shaped opening faces the left or right side wall of the well frame. The bent plate is fixedly arranged on the inner turned edge. Each track is surrounded by the inner turned edge, the bent plate and the corresponding side wall of the well frame. The bent plate has a support plate located above the roller. The support plate extends along the horizontal direction. There is a gap between the support plate and the side wall of the well frame. When the roller rolls along the track in the front and back directions, the support rod slides along the gap. The bottom of the well cover slides along the support plate.

[0006] Further, the rectangular bottom plate also has an outer turned edge located outside the well frame. The outer turned edge is used for concrete pouring.

[0007] Further, the inside of the well frame is also provided with an inclined plate. The inclined plate corresponds to the two left and right tracks. The inclined plate is inclined along the up and down directions. When the roller is separated from the track, it can roll upward along the inclined plate. The lower end surface of the well cover is provided with an inclined surface. The inclined surface is slidingly matched with the inclined plate.

[0008] Further, the well frame is also provided with two left and right limiting plates, the limiting plates correspond to the bending plates one by one and are hinged to the corresponding bending plates, and the limiting plates can rotate around the front and rear axes to limit or unlock the supporting rods.

[0009] Further, the limiting plate is located on the side of the bending plate close to the inclined plate and is L-shaped.

[0010] Further, the well cover is also provided with a handle slidingly arranged thereon, and the handle is used to pull the well cover to slide.

[0011] Further, the upper end surface of the well cover is provided with a placing groove for placing a cement brick.

[0012] Further, the bottom of the inclined plate is provided with reinforcing ribs distributed in the left and right directions.

[0013] Further, the bottom of the well cover is provided with a reinforcing plate located between the two tracks.

[0014] Preferably, the well cover and the well frame are both square.

[0015] The beneficial effects of the present application are: The push-pull well cover provided by the present application has the following advantages: first, the well cover can smoothly slide along the track, and when a vehicle or a pedestrian passes above the well cover, the gravity above the well cover acts on the supporting plate of the bending plate, so that the rollers can avoid bearing a large pressure above the well cover, and the service life of the push-pull well cover is prolonged.

[0016] Second, the outer flange is provided, which facilitates the pouring of concrete thereon, cooperates with the concrete poured around the well frame, and enables the well frame to be stably fixed on the ground.

[0017] Third, the limiting plate is provided, which can limit the sliding of the supporting rod to avoid the reverse sliding of the well cover.

[0018] Fourth, the reinforcing plate and the reinforcing rib are provided to enhance the rigidity of the well cover and the well frame, so that both of them are not easy to deform.

[0019] Fifth, the bottom of the well cover in the prior art is provided with four rollers, and after the well cover is moved to the ground, the rollers are directly in contact with the ground, so that the friction between the well cover and the ground is small and the well cover is easy to slide reversely, while the push-pull well cover of the present application has only two rollers on one side of the bottom of the well cover, and after the well cover is moved to the ground, the two rollers are in a suspended state, the well cover is directly in contact with the ground to generate a large friction, and the well cover is not easy to slide reversely. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1A perspective view of a push-pull type manhole cover according to an embodiment of the present application is shown in FIG. 1. Figure 2 A top view of a push-pull type manhole cover according to an embodiment of the present application is shown in FIG. 2. Figure 3 A perspective view of a push-pull type manhole cover according to an embodiment of the present application in a closed state is shown in FIG. 3. Figure 4 A perspective view of a push-pull type manhole cover according to an embodiment of the present application in an opening state is shown in FIG. 4. Figure 5 A perspective view of a push-pull type manhole cover according to an embodiment of the present application in a fully opened state is shown in FIG. 5. Figure 6 A structure diagram of a well frame in a push-pull type manhole cover according to an embodiment of the present application is shown in FIG. 6. Figure 1 Figure 7 A structure diagram of a well frame in a push-pull type manhole cover according to an embodiment of the present application is shown in FIG. 7. Figure 2 Figure 8 A perspective view of a push-pull type manhole cover according to an embodiment of the present application in a closed state is shown in FIG. 8. Figure 9 A perspective view of a push-pull type manhole cover according to an embodiment of the present application in a closed state is shown in FIG. 9. Figure 10 A top view of a push-pull type manhole cover according to an embodiment of the present application in a closed state is shown in FIG. 10. Figure 11 A structure diagram of a manhole cover in a push-pull type manhole cover according to an embodiment of the present application is shown in FIG. 11. Figure 12 A structure diagram of a handle in a push-pull type manhole cover according to an embodiment of the present application is shown in FIG. 12.

[0021] Wherein: 100, manhole cover; 101, handle; 1011, sliding rod; 1012, blocking rod; 102, placing groove; 103, roller; 104, reinforcing plate; 105, invisible groove; 106, inclined surface; 107, supporting rod; 200, well frame; 201, bent plate; 202, rectangular bottom plate; 203, reinforcing rib; 204, inclined plate; 300, limiting plate. DETAILED DESCRIPTION

[0022] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0023] ​​The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] like Figures 1 to 12 As shown, an embodiment of the present invention provides a push-pull manhole cover, including a manhole frame 200 and a manhole cover 100, both of which are rectangular frames; the manhole cover 100 can be completely contained within or slide out of the manhole frame 200; the manhole frame 200 has two tracks extending in the front-to-back direction inside; the bottom of the manhole cover 100 has two support rods 107, which are inclined in the vertical direction; each support rod 107 has a roller 103 rotatably mounted at its bottom, the roller 103 being located in the track and capable of rolling back and forth along the track; the bottom of the manhole frame 200 has a rectangular base plate 202. 02 has an inner flange located inside the manhole frame 200. The manhole frame 200 has two bending plates 201 on the left and right sides inside. The vertical cross-section of the bending plate 201 is inverted L-shaped, and the L-shaped opening faces the left or right side wall of the manhole frame 200. The bending plate 201 is fixedly installed on the inner flange. Each track is formed by the inner flange, the bending plate 201 and the corresponding side wall of the manhole frame 200. The bending plate 201 has a support plate located above the roller 103. The support plate extends in the horizontal direction. There is a gap between the support plate and the side wall of the manhole frame 200. When the roller 103 rolls back and forth along the track, the support rod 107 slides along the gap, and the bottom of the manhole cover 100 slides along the support plate.

[0026] As shown in Figure 3 and Figure 5 , the rollers 103 are in a suspended state when the push-pull manhole cover is in the closed state and the fully open state. As shown in Figure 4 , the rollers 103 roll on the rectangular bottom plate 202 when the push-pull manhole cover is in the opening state.

[0027] In this way, the manhole cover 100 can smoothly slide along the track when the push-pull manhole cover is in the opening state, and when the push-pull manhole cover is in the closed state or the fully open state, if there is a vehicle or pedestrian passing above the manhole cover 100, the gravity above the manhole cover 100 acts on the support plate of the bent plate 201 due to the suspended state of the rollers 103, thereby avoiding the rollers 103 bearing a large pressure above the manhole cover 100, and prolonging the service life of the push-pull manhole cover.

[0028] The rectangular bottom plate 202 also has an outwardly turned edge located outside the well frame 200. In use, the outwardly turned edge is placed on the ground, and concrete is poured on the outwardly turned edge and around the well frame 200, so that the well frame 200 can be stably fixed to the ground.

[0029] As shown in Figure 7 , the inside of the well frame 200 is also provided with an inclined plate 204, which corresponds to the left and right tracks at the same time, and the inclined plate 204 is inclined in the up-down direction. The rollers 103 can roll upwards along the inclined plate 204 after being separated from the track, and the lower end surface of the manhole cover 100 is provided with an inclined surface 106 which is in sliding cooperation with the inclined plate 204.

[0030] This arrangement facilitates the upward movement of the manhole cover 100 relative to the well frame 200, thereby achieving the opening of the manhole cover 100. Moreover, since the bottom of the manhole cover 100 is provided with only two rollers 103, compared with the prior art in which the bottom of the manhole cover is provided with four rollers, when the rollers 103 move onto the inclined plate 204, the manhole cover 100 is not easy to slide in the reverse direction.

[0031] The well frame 200 is also provided with two left and right limit plates 300, which correspond one-to-one to the bent plates 201 and are hinged to the respective corresponding bent plates 201, and the limit plates 300 can rotate around the front and rear axes, thereby achieving the limiting or unlocking of the support rods 107.

[0032] As shown in Figure 8 , the limit plate 300 is in the unlocked state. At this time, the manhole cover 100 can smoothly slide. As shown in Figure 9 , the limit plate 300 is in the locked state. At this time, the support rods 107 at the bottom of the manhole cover 100 are limited, so that the manhole cover 100 cannot slide.

[0033] As shown in Figure 7As shown, the side of the bent plate 201 close to the inclined plate 204 is only provided with a vertical plate, and the limiting plate 300 is located on the vertical plate of the side of the bent plate 201 close to the inclined plate 204. The limiting plate 300 is L-shaped. Since the roller 103 moves to the inclined plate 204 and then the manhole cover 100 is easily reversely slid under the action of gravity, the sliding of the support rod 107 is limited by the limiting plate 300, so that the reversely sliding of the manhole cover 100 can be avoided.

[0034] The limiting plate 300 is L-shaped, which is beneficial to better block the support rod 107.

[0035] As shown in Figure 1 and Figure 2 , the manhole cover 100 is also provided with a handle 101 which is slidably arranged on the manhole cover 100 and used for pulling the manhole cover 100 to slide. The manhole cover 100 is provided with a hidden groove 105, and the handle 101 can be hidden in the hidden groove 105. By inserting a finger into the hidden groove 105, the handle 101 can be touched and pulled out.

[0036] As shown in Figure 12 , the handle 101 has two sliding rods 1011, and the inside of the manhole cover 100 is provided with a mounting hole extending in the up-down direction. The sliding rods 1011 can slide up and down along the mounting hole, and the mounting hole cannot pass the blocking rod 1012 on the sliding rod 1011, so that the handle 101 can be prevented from being separated from the manhole cover 100.

[0037] As shown in Figure 2 , the upper end surface of the manhole cover 100 is provided with a placing groove 102 which is used for placing a cement brick. In this way, after the manhole cover 100 is opened, the cement brick can be placed in the placing groove 102 to press down the manhole cover 100, so that the manhole cover 100 cannot slide and the safety of inspection can be ensured.

[0038] The bottom of the inclined plate 204 is provided with reinforcing ribs 203 which are distributed in the left-right direction. The reinforcing ribs 203 can strengthen the rigidity of the inclined plate 204, so that the well frame 200 is not easy to deform.

[0039] As shown in Figure 11 , the bottom of the manhole cover 100 is provided with a reinforcing plate 104 which is located between the left and right two tracks. The reinforcing plate 104 can strengthen the rigidity of the manhole cover 100, so that the manhole cover 100 is not easy to deform.

[0040] Preferably, the manhole cover 100 and the well frame 200 are both square-shaped, which is beneficial to processing.

[0041] In combination with the above embodiment, the use principle and working process of the embodiment of the application are as follows: In the initial state, as shown inFigure 3 As shown, the push-pull manhole cover is in a closed state, and the manhole cover 100 is completely accommodated in the well frame 200, and the roller 103 is in a suspended state.

[0042] Then, a mounting groove is dug on the ground, the push-pull manhole cover is horizontally placed in the mounting groove, the upper surface of the push-pull manhole cover is flush with the ground, and concrete is poured on the outer flange of the rectangular bottom plate 202 and the position around the well frame 200, so that the well frame 200 is stably fixed on the ground.

[0043] When the manhole cover 100 needs to be opened, the manhole cover 100 is pulled by the handle 101. As shown, the angle between the manhole cover 100 and the well frame 200 is first made to be 30°, and then the manhole cover 100 is pulled to make the roller 103 roll on the rectangular bottom plate 202. After the roller 103 slides out of the track, it rolls upward along the inclined plate 204, so that the manhole cover 100 is separated from the well frame 200. Then, the manhole cover 100 is rotated to a horizontal state, as shown, at this time, the bottom of the manhole cover 100 can be horizontally supported on the ground, and the roller 103 is in a suspended state again. Figure 4 Figure 5

[0044] Finally, the limiting plate 300 is rotated, so that the limiting plate 300 is rotated from the state of Figure 8 to the state of Figure 9 , so that the limiting plate 300 can limit the manhole cover 100, and avoid reverse sliding of the manhole cover 100.

[0045] The technical features of the above embodiments can be combined arbitrarily, in order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that it is within the scope of the present application.

[0046] The above-described embodiments only express several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.​​

Claims

1. A push-pull manhole cover, characterized in that, It includes a manhole frame and a manhole cover, both of which are rectangular frames; the manhole cover can be completely contained within the manhole frame or slide out of the manhole frame. The well frame has two tracks inside, extending in the front-to-back direction. The bottom of the well cover has two support rods, which are inclined in the up-down direction. Each support rod has a roller at its bottom, which is located in the track and can roll back and forth along the track. The bottom of the manhole frame is provided with a rectangular base plate, which has an inward flange located inside the manhole frame. The inside of the manhole frame is provided with two bent plates, one on the left and one on the right. The vertical cross-section of the bent plates is inverted L-shaped, with the L-shaped opening facing the left or right side wall of the manhole frame. The bent plates are fixedly installed on the inward flange. Each track is formed by the inward flange, the bent plates, and the corresponding side wall of the manhole frame. The bent plates have a support plate located above the rollers. The support plate extends horizontally and is spaced from the side wall of the manhole frame. When the rollers roll back and forth along the tracks, the support rods slide along the gaps, and the bottom of the manhole cover slides along the support plate.

2. The push-pull manhole cover according to claim 1, characterized in that, The rectangular base plate also has an outward flange located outside the well frame, which is used for concrete pouring.

3. The push-pull manhole cover according to claim 2, characterized in that, The well frame is also equipped with an inclined plate inside, which corresponds to two tracks on the left and right. The inclined plate is inclined in the vertical direction. After the rollers are disengaged from the tracks, they can roll upward along the inclined plate. The lower end surface of the well cover is provided with an inclined surface, which slides in cooperation with the inclined plate.

4. The push-pull manhole cover according to claim 3, characterized in that, The well frame is also provided with two limiting plates on the left and right. The limiting plates correspond one-to-one with the bending plates and are hinged to their respective bending plates. The limiting plates can rotate around the front and rear axes, thereby limiting or unlocking the support rod.

5. The push-pull manhole cover according to claim 4, characterized in that, The limiting plate is located on the side of the bent plate near the inclined plate, and the limiting plate is L-shaped.

6. The push-pull manhole cover according to claim 2, characterized in that, The manhole cover is also equipped with a handle that slides on it, and the handle is used to pull the manhole cover to slide.

7. The push-pull manhole cover according to claim 1, characterized in that, The upper surface of the manhole cover is provided with a placement groove for placing cement bricks.

8. The push-pull manhole cover according to claim 3, characterized in that, The bottom of the inclined plate is provided with reinforcing ribs, and multiple reinforcing ribs are distributed along the left and right direction.

9. The push-pull manhole cover according to claim 1, characterized in that, The bottom of the manhole cover is equipped with a reinforcing plate, which is located between the left and right tracks.

10. The push-pull manhole cover according to claim 1, characterized in that, Both the manhole cover and the manhole frame are square.

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