Concrete well lid with locking structure

Abstract

The utility model discloses a concrete well lid with a locking structure, which comprises a well ring and a well lid arranged in the well ring, the left side and the right side of the well ring are respectively provided with a locking groove, the well lid at least comprises a frame, a cross rod is arranged in the frame, a mounting space with a left opening and a right opening communicated with the locking grooves is formed in the cross rod, and the locking grooves are arranged in the mounting space. Locking blocks capable of moving into the locking grooves are slidably arranged on the left side and the right side of the mounting space correspondingly, a rotating disc is rotationally arranged in the middle of the transverse rod, the locking blocks are fixedly connected with driving connecting rods, and two involute track grooves are formed in the left side and the right side of the rotating disc correspondingly; a guide piece is arranged at the end, close to the rotating disc, of the driving connecting rod and movably inserted into the involute track groove.

Description

Technical Field

[0001] The utility model relates to a concrete manhole cover provided with a locking structure. Background Art

[0002] Prior art, such as Chinese invention patent document, publication number CN117211341A, discloses a concrete manhole cover with a safety lock, including a manhole ring for fixing on a road surface, a manhole cover arranged in the manhole ring, and the manhole cover including a metal frame and a concrete filler filled in the metal frame; a concave cavity is arranged on the outer wall of the metal frame, a locking cavity interconnected with the concave cavity is arranged on the inner wall of the manhole ring, a locking member movable relative to the metal frame toward the locking cavity is arranged in the concave cavity, and a driving component for driving the locking member to move into or out of the locking cavity is arranged on the metal frame.

[0003] Based on the above, in the prior art, the drive assembly uses a combination of a screw and a screw nut. This combination is prone to rust and cannot cooperate with the transmission, and there is a problem of being unable to unlock, which needs further improvement. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a concrete manhole cover provided with a locking structure.

[0005] A concrete manhole cover with a locking structure designed for this purpose comprises a manhole ring and a manhole cover arranged in the manhole ring, wherein locking grooves are respectively arranged on the left and right sides of the manhole ring, and the manhole cover comprises at least a frame, wherein a cross bar is arranged in the frame, and an installation space with left and right openings connected to the locking grooves is formed in the cross bar, and locking blocks that can be moved into the locking grooves are respectively slidably arranged on the left and right sides of the installation space, a turntable is rotatably arranged in the middle of the cross bar, and the locking block is fixedly connected to a driving connecting rod, and two involute track grooves are respectively arranged on the left and right sides of the turntable, and a guide member is arranged at one end of the driving connecting rod close to the turntable, and the guide member is movably inserted in the involute track groove.

[0006] Preferably, a mounting hole is provided in the middle of the crossbar, a rotating sleeve is provided on the turntable, an operating hole with an upper opening is provided in the rotating sleeve, and the rotating sleeve is rotatably arranged in the mounting hole.

[0007] Preferably, an annular groove is provided on the outer wall of the rotating sleeve, a threaded hole is provided on the hole wall of the mounting hole, a limiting bolt is installed in the threaded hole, and the limiting bolt is inserted into the annular groove.

[0008] Preferably, track ribs are respectively arranged on the left and right sides of the installation space, and a track groove is arranged on the locking block, and the track ribs are movably inserted into the track groove.

[0009] Preferably, the frame is filled with concrete.

[0010] Compared with the prior art, the utility model has locking blocks that can be moved into the locking grooves slidably arranged on the left and right sides of the installation space, a turntable is rotatably arranged in the middle of the crossbar, the locking block is fixedly connected with a driving connecting rod, two involute track grooves are arranged on the left and right sides of the turntable, and a guide is arranged at one end of the driving connecting rod close to the turntable, and the guide is movably inserted in the involute track grooves. The utility model can drive the driving connecting rod to drive the locking block to move into the locking groove or move outward from the locking groove by rotating the turntable in the forward or reverse direction through the track constraint of the involute track groove, so as to realize locking or unlocking the frame and the well ring. Compared with the prior art, the driving structure does not need to adopt threaded connection to avoid the problem of being unable to rotate due to rust. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is one of the three-dimensional structural schematic diagrams of the utility model;

[0012] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0013] Figure 3 This is the second schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 4 For this utility model Figure 3 The enlarged structural diagram at A in the middle;

[0015] Figure 5 It is a partial structural schematic diagram of the utility model;

[0016] Figure 6 For this utility model Figure 2 Enlarged structural diagram at B in the middle. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] See also Figure 1-Figure 6A concrete manhole cover with a locking structure comprises a manhole ring 10 and a manhole cover 20 arranged in the manhole ring 10, wherein the left and right sides of the manhole ring 10 are respectively provided with locking grooves 110, and the manhole cover 20 comprises at least a frame 210, wherein a cross bar 230 is arranged in the frame 210, and an installation space 231 with left and right openings connected to the locking groove 110 is formed in the cross bar 230, and locking blocks 310 movable into the locking groove 110 are respectively slidably arranged on the left and right sides of the installation space 231, and a turntable 330 is rotatably arranged in the middle of the cross bar 230, and the locking block 310 is fixedly connected with a driving connecting rod 320, and two involute track grooves 350 are respectively arranged on the left and right sides of the turntable 330, and a guide member 340 is arranged at one end of the driving connecting rod 320 close to the turntable 330, and the guide member 340 is movably inserted in the involute track groove 350. The utility model can rotate the turntable in the forward or reverse direction, and can drive the driving connecting rod to drive the locking block to move into the locking groove or move outward from the locking groove through the trajectory constraint of the involute trajectory groove, so as to lock or unlock the frame and the well ring. Compared with the prior art, the driving structure does not need to adopt threaded connection to avoid the problem of rust and inability to rotate.

[0019] See also Figure 6 A mounting hole 233 is provided in the middle of the cross bar 230 , a rotating sleeve 360 ​​is provided on the turntable 330 , an operating hole 352 with an upper opening is provided in the rotating sleeve 360 ​​, and the rotating sleeve 360 ​​is rotatably disposed in the mounting hole 233 .

[0020] The operation hole 352 is a hexagonal structure. During operation, a hexagonal wrench is inserted into the operation hole 352 to drive the rotating sleeve 360 ​​to drive the rotating disk 330 to rotate.

[0021] See also Figure 6 The outer wall of the rotating sleeve 360 ​​is provided with an annular groove 361, and the hole wall of the mounting hole 233 is provided with a threaded hole 234. The threaded hole 234 is provided with a limit bolt 40, and the limit bolt 40 is inserted into the annular groove 361. The limit bolt 40 can constrain the upper and lower positions of the rotating sleeve 360 ​​to prevent it from being separated from the mounting hole 233. The setting of the annular groove 361 can realize rotation relative to the limit bolt 40.

[0022] See also Figure 4 The installation space 231 is provided with track ribs 232 on the left and right sides, and the locking block 310 is provided with a track groove 311, and the track ribs 232 are movably inserted into the track groove 311. The track ribs 232 can constrain the locking block 310 to slide smoothly to ensure its stability.

[0023] See also Figure 1The frame 210 is filled with concrete 220. Before the concrete 220 is filled, steel bars are implanted inside the frame 210, and the steel bars can be fixedly connected to the frame 210 by welding.

[0024] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0026] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A concrete manhole cover provided with a locking structure, comprising a manhole ring (10) and a manhole cover (20) arranged in the manhole ring (10), wherein the left and right sides of the manhole ring (10) are respectively provided with locking grooves (110), the manhole cover (20) at least comprises a frame (210), a cross bar (230) is arranged in the frame (210), and an installation space (231) is formed in the cross bar (230) and communicates with the locking groove (110), characterized in that: The left and right sides of the installation space (231) are respectively slidably provided with locking blocks (310) that can be moved into the locking groove (110); a turntable (330) is rotatably provided in the middle of the crossbar (230); the locking block (310) is fixedly connected with a driving connecting rod (320); two involute track grooves (350) are respectively provided on the left and right sides of the turntable (330); a guide member (340) is provided at one end of the driving connecting rod (320) close to the turntable (330); and the guide member (340) is movably inserted in the involute track groove (350).

2. The concrete manhole cover provided with a locking structure according to claim 1, characterized in that: A mounting hole (233) is provided in the middle of the crossbar (230), a rotating sleeve (360) is provided on the rotating disk (330), an operating hole (352) with an upper opening is provided in the rotating sleeve (360), and the rotating sleeve (360) is rotatably disposed in the mounting hole (233).

3. The concrete manhole cover provided with a locking structure according to claim 2, characterized in that: An annular groove (361) is provided on the outer wall of the rotating sleeve (360), a threaded hole (234) is provided on the hole wall of the mounting hole (233), a limiting bolt (40) is installed in the threaded hole (234), and the limiting bolt (40) is inserted into the annular groove (361).

4. The concrete manhole cover provided with a locking structure according to claim 1, characterized in that: Track ribs (232) are respectively arranged on the left and right sides of the installation space (231), and a track groove (311) is arranged on the locking block (310), and the track ribs (232) are movably inserted into the track groove (311).

5. The concrete manhole cover provided with a locking structure according to claim 1, characterized in that: The frame (210) is filled with concrete (220).

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