CN107859073A - A kind of well cover opening device - Google Patents

Abstract

The invention provides a well cover opening device, which comprises a lever and a tripod. A lever mounting block is arranged on the top of the tripod. The lever mounting block is hinged to the lever. shaft and short shaft, at least two chains are connected to the tail of the short shaft, and a hook is arranged at the low end of each chain. The invention utilizes the principle of leverage, takes the hinge point of the lever installation block and the lever as the fulcrum, and lifts the well cover through the short axis of the lever, which not only saves time and effort, but also reduces the opening and damage of the well cover. The invention can prevent employees from being injured during daily operations, and ensures that employees do not cause accidental injuries during work.

Description

A well cover opening device

technical field

The invention belongs to the field of engineering technology, in particular to a well cover opening device.

Background technique

With the development and needs of urban construction, commonly used pipes or cables for tap water, telecommunications, electricity, gas, heat, fire protection, etc. are laid underground, and well shafts and well chambers for maintenance and repair are arranged at intervals along the line. Install the openable manhole cover at the level of the road, and enter the well chamber through the manhole cover to maintain the relevant facilities in daily use.

At present, the common way to open the manhole cover requires the use of two tools, a pick and a crowbar. First, insert the pick into the opening hole of the manhole cover. The manhole cover is open. The tools mentioned above cannot be operated by a single person when opening the manhole cover, which is time-consuming and labor-intensive; the safety is poor, and the pointed end of the pick and the manhole cover cannot be fixed during the opening process, which is easy to hurt people.

Contents of the invention

The object of the present invention is to provide a well cover opening device to solve the problems of poor safety and laboriousness existing in the existing well cover opening devices.

To achieve the above object, the present invention adopts the following technical solutions:

A well cover opening device, comprising a lever and a tripod, the top of the tripod is provided with a lever mounting block, the lever mounting block is hinged to the lever, the lever can rotate up and down around the hinge point, and the hinge point divides the lever into a long axis and a short axis , at least two chains are connected to the tail of the short shaft, and a hook is arranged at the lower end of each chain.

The hook includes a fixed end connected with the chain, and a movable end hinged with the fixed end, and a limit block is arranged at the bottom of the fixed end.

The chain is made of stainless steel.

The end of the long axis is provided with a wave-shaped protrusion.

The length ratio of the major axis to the minor axis is 6:4˜7:3.

Beneficial effects: the invention utilizes the principle of leverage, takes the hinge point of the lever installation block and the lever as the fulcrum, and lifts the manhole cover through the short axis of the lever, which not only saves time and effort, but also reduces the opening and damage of the manhole cover. The invention can prevent employees from being injured during daily operations, and ensures that employees do not cause accidental injuries during work.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Figure 2 is a schematic structural diagram of the hook.

Detailed ways

Below in conjunction with embodiment the present invention is further explained.

As shown in Figure 1, a kind of manhole lid opener comprises a lever, a tripod 3, and the top of described tripod 3 is provided with lever mounting block 4, and lever mounting block 4 is hinged with lever, and lever can rotate up and down around hinge point, hinged The point divides the lever into a major axis 1 and a minor axis 2, the tail of the minor axis 2 is connected with two chains 5, and the low end of each chain 5 is provided with a hook 6.

As shown in Figure 2, hook 6 comprises the fixed end 61 that is connected with chain 5, and the movable end 62 that is hinged with fixed end 61, and the bottom of fixed end 61 is provided with limiting block 63, is used for limiting movable end 62, makes The angle between the fixed end 61 and the movable end 62 is between 0° and 90°. Before use, the movable end 62 can be retracted upwards, so that the volume of the hook 6 can be reduced, so that it can be easily inserted into the hole of the well cover.

The material of chain 5 is stainless steel.

The end of the long axis 1 is provided with a wave-shaped protrusion 7, which plays the role of anti-slip.

The length ratio of the major axis 1 and the minor axis 2 is 6:4˜7:3.

During use, at first movable end 62 will be upwardly packed, reduce the volume of hook 6 like this, be convenient to stretch in the hole of well cover, after linking hook 6 stretches in the hole of well cover, movable end 62 falls freely, forms with fixed end 61 90°, and limit the position by the limit block 63, extend the two hooks 6 into the two holes of the well cover respectively, and lift them up to ensure that the hooks can be stuck in the well cover, then press down the end of the long axis, and use the lever The hinge point between the mounting block 4 and the lever is a fulcrum, and the well cover is lifted by the short axis of the lever, which not only saves time and effort, but also reduces the opening damage of the well cover.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also possible. It should be regarded as the protection scope of the present invention.

Claims (5)

1. A well cover opening device is characterized in that: comprise a lever, a tripod (3), the top of the tripod (3) is provided with a lever mounting block (4), the lever mounting block (4) is hinged with the lever, and the lever It can rotate up and down around the hinge point, and the hinge point divides the lever into a long axis (1) and a short axis (2). At least two chains (5) are connected to the tail of the short axis (2), and the lower end of each chain (5) The end is provided with a hook (6). 2. The manhole cover opening device according to claim 1, characterized in that: the hook (6) includes a fixed end (61) connected to the chain (5), and a movable end (62) hinged to the fixed end (61 ) ), the bottom of the fixed end (61) is provided with a limit block (63). 3. The manhole cover opening device according to claim 1, characterized in that: the chain (5) is made of stainless steel. 4. The manhole cover opening device according to claim 1, characterized in that: the end of the long axis (1) is provided with a wave-shaped protrusion (7). 5. The manhole cover opening device according to claim 1, characterized in that: the length ratio of the major axis (1) to the minor axis (2) is 6:4˜7:3.