Manhole cover structure for container

Abstract

The utility model relates to the field of containers, in particular to a manhole cover structure for a container, which comprises a manhole cover and a supporting rod, one end of the supporting rod is in threaded connection with the circle center of the back of the manhole cover, and the other end of the supporting rod is hinged to a container plate of the container. The hinged end of the supporting rod is connected with a pressing mechanism, the pressing mechanism is hinged to the box plate, and the hinged end serves as a crank and forms a crank and rocker mechanism together with the pressing mechanism. The manhole cover is pressed according to the dead point principle of a crank and rocker mechanism, and when the manhole cover is located at the dead point position, the manhole cover cannot be automatically loosened and does not need to be limited again through other tools; meanwhile, a bolt adjusting mechanism is arranged between the manhole cover and the supporting rod, the relative distance between the manhole cover and the manhole is adjusted, and therefore the effect that the pressing degree can still be adjusted according to needs after the manhole cover is closed is achieved.

Description

Technical Field

[0001] The utility model relates to the field of containers, in particular to a manhole cover structure for containers. Background Art

[0002] At present, the tightening of the manhole cover on the top of the container is Figure 1 , usually the locking rod is rotated to drive the lock head to hook or the pressure plate to press, and the handle of the locking rod is limited to prevent the locking rod from rotating and loosening. When this solution is used, the angle of the locking head hook or the pressure plate is fixed, and the degree of compression of the manhole cover cannot be adjusted; and after the manhole cover is compressed, the locking rod needs to be limited to prevent it from loosening, which is a cumbersome operation. Utility Model Content

[0003] The utility model aims to provide a manhole cover structure for a container to solve the problems raised by the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a manhole cover structure for a container, comprising a manhole cover and a support rod, one end of the support rod being threadedly connected to the back center of the manhole cover, and the other end being hinged to the box board of the container; the hinged end of the support rod is connected to a clamping mechanism, the clamping mechanism is hinged to the box board, and the hinged end serves as a crank and together with the clamping mechanism constitutes a crank rocker mechanism.

[0005] Preferably, an adjustment mechanism is welded to the back of the manhole cover, and the center point of the adjustment mechanism is located on the central axis of the manhole cover; the adjustment mechanism includes at least one pressing plate, one side of the pressing plate is directly welded to the manhole cover, and the other side is connected to the end of a bolt, and the bolt passes through the support rod perpendicular to the manhole cover and is threadedly connected to the support rod.

[0006] Preferably, the adjustment mechanism includes a pressing plate, the pressing plate is welded to the back center of the manhole cover, and the other side of the pressing plate is directly welded to the end of the bolt.

[0007] Preferably, the adjustment mechanism comprises a plurality of pressing plates, the pressing plates are evenly distributed along the circumference of the manhole cover, a pressing rod is welded at the center of each pressing plate, and ends of the plurality of pressing rods are welded to ends of the bolts.

[0008] Preferably, the clamping mechanism includes a connecting rod and a rocker of the crank-rocker mechanism, the crank, the connecting rod and the rocker are hinged in sequence, and the crank and the rocker are hinged to the box plate; an operating rod is extended and welded to the connecting rod, and pressing down the operating rod can make the crank-rocker mechanism reach a dead point position and lock the crank.

[0009] Compared with the prior art, the utility model utilizes the dead point principle of the crank rocker mechanism to tighten the manhole cover. When the manhole cover is in the dead point position, it will not loosen automatically, and no other tools are required to limit it again. At the same time, a bolt adjustment mechanism is provided between the manhole cover and the support rod to adjust the relative distance between the manhole cover and the manhole, so as to achieve the effect of being able to adjust the degree of tightening as needed after closing the manhole cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a technical solution in the prior art;

[0011] Figure 2 It is a structural schematic diagram of an embodiment of the utility model (manhole cover closed);

[0012] Figure 3 yes Figure 2 A schematic diagram of the structure of the manhole cover in the embodiment when it is open;

[0013] Figure 4 yes Figure 2 A schematic diagram of the distribution of the adjustment mechanism in the embodiment;

[0014] Figure 5 It is a distribution diagram of the adjustment mechanism in another embodiment of the utility model. DETAILED DESCRIPTION

[0015] A circular manhole 2 and a manhole cover 1 that can cover the manhole 2 are provided on the top box board 3 of the container. The front side of the manhole cover 1 covers the manhole 2. To enhance the sealing performance, a circle of rubber pads 5 are provided at the connection between the manhole cover 1 and the edge of the manhole 2, and the rubber pads 5 have a certain elasticity. Figures 2 to 3 The utility model comprises a manhole cover 1 and a support rod 4, one end of the support rod 4 is threadedly connected to the back center of the manhole cover 1, and the other end is hinged to the box board 3 of the container.

[0016] The hinged end of the support rod 4 is connected to a clamping mechanism, which is hinged to the box plate 3. The hinged end serves as a crank 81 and together with the clamping mechanism constitutes a crank 81 and rocker 83 mechanism. The clamping mechanism includes a connecting rod 82 and a rocker 83 of the crank 81 and rocker 83 mechanism. The crank 81, the connecting rod 82 and the rocker 83 are hinged in sequence, and the crank 81 and the rocker 83 are both hinged to the box plate 3. An operating rod 9 is welded to the connecting rod 82. Pressing down the operating rod 9 can make the crank 81 and rocker 83 mechanism reach the dead point position and lock the crank 81, so that the support rod 4 and the manhole cover 1 are stuck in the current position. At the same time, there is no need to fix or limit the operating rod 9 for the second time, which improves convenience. The open state of the manhole cover 1 is Figure 3 After pressing down the operating lever 9, the manhole cover 1 can be moved to Figure 2 , Figure 2 The dead point position is shown.

[0017] The utility model provides the following embodiments of the threaded connection between the support rod 4 and the manhole cover 1:

[0018] Embodiment 1: The center of the back of the manhole cover 1 is directly welded to the end of a bolt 7, and the bolt 7 passes through the support rod 4 perpendicular to the manhole cover 1 and is threadedly connected to the support rod 4. When the support rod 4 is at the dead point, the position of the bolt 7 relative to the support rod 4 can be adjusted by the threaded structure, thereby adjusting the distance between the manhole cover 1 and the manhole 2, squeezing the rubber pad 5, and achieving a strong seal. However, this scheme only applies a clamping force at the center of the back of the manhole cover 1, and the clamping force will be evenly weakened from the center to the outside until it reaches the edge of the manhole cover 1.

[0019] In order to improve the adaptability of the thread structure to different manhole covers 1, an adjustment mechanism can be welded on the back of the manhole cover 1, while ensuring that the center point of the adjustment mechanism is located on the central axis of the manhole cover 1. The adjustment mechanism includes at least one pressing plate 61, one side of the pressing plate 61 is directly welded to the back of the manhole cover 1, and the other side is connected to the end of a bolt 7, which passes through the support rod 4 perpendicular to the manhole cover 1 and is threadedly connected to the support rod 4.

[0020] Embodiment 2: When the adjustment mechanism includes only one pressing plate 61, refer to Figure 2 and Figure 4 , the pressing sheet 61 can be directly welded to the center of the back of the manhole cover 1, and the other side of the pressing sheet 61 can be directly welded to the end of the bolt 7. The actual clamping effect produced by this solution is the same as that of the first embodiment, and the clamping force is only applied to the center of the back of the manhole cover 1 and the clamping force gradually weakens to the edge of the manhole cover 1.

[0021] Embodiment 3: In order to achieve uniform and rapid application of the pressing force at the edge of the manhole cover 1 and further achieve the sealing strength as required, the adjustment mechanism includes a plurality of pressing plates 61, and the number of the pressing plates 61 is at least two. In this embodiment, the adjustment mechanism includes three pressing plates 61, see Figure 5 The pressing pieces 61 are evenly distributed along the circumference of the manhole cover 1. A pressing rod 62 is welded at the center of each pressing piece 61. The ends of the multiple pressing rods 62 are welded to the ends of the bolts 7. It can be seen from the top view that each pressing rod 62 is in the same plane, and the angle between two adjacent pressing rods 62 is 120 degrees. When the support rod 4 is at the dead point, when the bolt 7 is turned to adjust the relative distance between the manhole cover 1 and the manhole 2, the pressing force is transmitted from the end of the bolt 7 through different pressing rods 62 to the corresponding pressing piece 61, thereby evenly pressing the connection between the manhole cover 1 and the edge of the manhole 2.

[0022] In summary, the utility model utilizes the dead point principle of the crank 81 and rocker 83 mechanism to compress the manhole cover 1. When the manhole cover 1 is at the dead point position, it will not loosen automatically, and no other tools are required to limit it again. At the same time, a bolt 7 adjustment mechanism is provided between the manhole cover 1 and the support rod 4 to adjust the relative distance between the manhole cover 1 and the manhole 2, so as to achieve the effect of being able to adjust the degree of compression as needed after closing the manhole cover 1.

[0023] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A manhole cover structure for a container, characterized in that: The invention comprises a manhole cover (1) and a support rod (4), one end of the support rod (4) being threadedly connected to the back center of the manhole cover (1), and the other end being hinged to the box board (3) of the container; the hinged end of the support rod (4) is connected to a clamping mechanism, the clamping mechanism being hinged to the box board (3), and the hinged end serving as a crank (81) and together with the clamping mechanism forming a crank (81) rocker (83) mechanism.

2. The manhole cover structure according to claim 1, characterized in that: An adjusting mechanism is welded on the back of the manhole cover (1), and the center point of the adjusting mechanism is located on the central axis of the manhole cover (1); the adjusting mechanism comprises at least one pressing plate (61), one side of the pressing plate (61) is directly welded to the manhole cover (1), and the other side is connected to the end of a bolt (7), and the bolt (7) passes through the support rod (4) perpendicular to the manhole cover (1) and is threadedly connected to the support rod (4).

3. The manhole cover structure according to claim 2, characterized in that: The adjustment mechanism comprises a pressing plate (61), the pressing plate (61) is welded to the back center of the manhole cover (1), and the other side of the pressing plate (61) is directly welded to the end of the bolt (7).

4. The manhole cover structure according to claim 2, characterized in that: The adjustment mechanism comprises a plurality of pressing plates (61), the pressing plates (61) being evenly distributed along the circumference of the manhole cover (1), a pressing rod (62) being welded at the center of each pressing plate (61), and the ends of the plurality of pressing rods (62) being welded to the ends of the bolts (7).

5. The manhole cover structure according to claim 1, characterized in that: The clamping mechanism comprises a connecting rod (82) and a rocking rod (83) of the crank (81) and rocking rod (83) mechanism; the crank (81), the connecting rod (82) and the rocking rod (83) are hinged in sequence; the crank (81) and the rocking rod (83) are both hinged to the box plate (3); an operating rod (9) is extended and welded to the connecting rod (82); pressing down the operating rod (9) can make the crank (81) and rocking rod (83) mechanism reach a dead point position, thereby locking the crank (81).

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