CN205676115U - Portable manhole cover opener - Google Patents

Abstract

The utility model discloses a portable inspection shaft cover opener, which comprises a bracket, a screw rod, a pull rod and a supporting chassis, the screw rod is screwed through one end of the bracket, a supporting foot is arranged at the bottom of the other end of the bracket, and the pull rod is screwed through the bracket on the Between the screw rod and the support leg and close to the support leg, the bottom end of the pull rod is provided with a pull hook, the top end of the screw rod is provided with a wrench, the bottom end of the screw rod is provided with a bearing, and the bearing is fixed on the support chassis. The portable inspection well cover opener of the utility model has the advantages of convenient operation, time saving and labor saving.

Description

Portable manhole cover opener

technical field

The utility model relates to the technical field of urban drainage, in particular to a portable inspection well cover opener.

Background technique

In recent years, along with the unprecedented development of urban construction, the continuous laying of lines such as telecommunications, electric power, water supply and drainage pipelines, the use of inspection wells is increasing. In order to be firm and anti-theft, the manhole cover is heavy in quality and tightly installed. The gap between the well and the manhole cover tends to fill with impurities during use. When it is necessary to open the manhole cover for pipeline maintenance or emergencies, it often cannot be opened immediately, and the work plan cannot be carried out on time, which seriously affects the work efficiency. At present, there are three kinds of communication tools for opening manhole covers in major cities in my country: iron hooks, foreign picks and sledgehammers, commonly known as "three major pieces". These three pieces also represent three ways to open the inspection well: the first is to use an iron hook to open it; the second is to open it with a foreign pick; Reach opening purpose, but the consequence of this method directly affects people's production and life. Opening manhole covers with traditional tools is time-consuming and laborious, and seriously affects pipeline maintenance and emergency repairs. Therefore, it is necessary to develop a new tool that can quickly and easily open manhole covers, which has great practical significance and economic benefits.

In order to solve the above-mentioned technical problems, researchers have invented a portable manhole cover opener. The device includes a bracket, a screw and a pull rod. The top is located between the screw rod and the supporting foot and is close to the supporting foot. The bottom end of the pull rod is provided with a pull hook, the top end of the screw rod is provided with a wrench, and the bottom end of the screw rod is provided with a support chassis. The portable manhole cover opener designed with this structure uses the principle of leverage to open the manhole cover. Compared with using iron hooks, foreign picks and sledgehammers to open the manhole cover, it does have the advantage of saving time and effort. However, in the actual operation process, there are still several shortcomings:

1. In the process of turning the screw with a wrench, the support chassis at the bottom of the screw will also rotate accordingly. With the slow rise of the rear seat, the pressure of the support chassis on the ground will become greater and greater, and then the support chassis and the ground will The friction force also increases accordingly, the higher the manhole cover is opened, the greater the force required to turn the wrench. That is to say, still need very big power just can open inspection shaft cover in the whole operation process.

2. When the cover is just opened, the whole opener will move in a circle with the pull hook as the center of the circle. It will not stop until it is rotated at a certain angle and the force is balanced. However, there is always a tendency to rotate. During this process, the operator also It needs to be turned together with the opener, which increases the difficulty of opening the cover and is very inconvenient.

In order to solve the above problems, this case was born.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a portable manhole cover opener which is convenient to operate, saves time and effort.

In order to achieve the above object, the technical scheme of the utility model is as follows: a portable manhole cover opener, including a bracket, a screw, a pull rod and a supporting chassis, the screw is screwed through one end of the bracket, and the bottom of the other end of the bracket is provided with a supporting foot, The pull rod is screwed through the position on the bracket between the screw and the supporting foot and close to the supporting foot. The bottom end of the pull rod is provided with a pull hook, the top end of the screw rod is provided with a wrench, the bottom end of the screw rod is provided with a bearing, and the bearing is fixed on the support on the chassis.

Preferably, the screw is a trapezoidal screw.

Preferably, the pull rod is fixed on the bracket through a butterfly nut.

Preferably, the bottom of the support foot is a plate structure.

After adopting the above-mentioned technical scheme, the utility model has the following advantages compared with the prior art: the portable manhole cover opener of the utility model, by adding a bearing at the bottom end of the screw rod, can avoid supporting the chassis while rotating the screw rod. Rotation saves the force required to overcome the friction between the support chassis and the ground when it rotates, saving time and effort in operation; at the same time, the existence of the bearing can also offset the radial rotation with the pull hook as the radius during the opening process, which is convenient to operate .

Description of drawings

Fig. 1 is a structural schematic view of the utility model portable manhole cover opener in use.

Shown in the figure: 1. Support 2. Screw rod 3. Pull rod 4. Support chassis 5. Bearing 6. Wrench 7. Wing nut 8. Manhole cover 9. Ground 10. Support feet.

detailed description

Below by accompanying drawing and embodiment the utility model is described in further detail.

As shown in FIG. 1 : a portable manhole cover opener includes a bracket 1 , a screw rod 2 , a pull rod 3 and a support chassis 4 . The screw rod 2 is screwed through one end of the bracket 1 , and the bottom of the other end of the bracket 1 is provided with a supporting foot 10 . The pull rod 3 is screwed through a part of the bracket 1 between the screw rod 2 and the support leg 10 and close to the support leg 10 , and a pull hook is provided at the bottom end of the pull rod 3 . A wrench 6 is provided at the top of the screw 2 , and a bearing 5 is provided at the bottom of the screw 2 , and the bearing 5 is fixed on the supporting chassis 4 .

In this embodiment, the screw 2 adopts a trapezoidal screw 2 in order to save labor during the opening process. In order to make fixing and dismounting of the pull rod 3 more convenient, the pull rod 3 is fixed on the support 1 by a butterfly nut 7 .

In this embodiment, the bottom of the supporting foot 10 is a plate structure. In the process of opening the cover, the supporting feet 10 exert great pressure on the manhole cover 8. By designing the bottom of the supporting feet 10 into a disk structure, the contact area between the supporting feet 10 and the manhole cover 8 can be increased, thereby reducing the pressure exerted by the supporting feet 10. The pressure on the manhole cover 8 reduces the damage of the supporting feet 10 to the manhole cover 8.

The portable manhole cover opener of the utility model, when the wrench 6 drives the screw rod 2 to rotate, due to the existence of the bearing 5, the supporting chassis 4 at the bottom will not rotate, thus eliminating the need to overcome the need to overcome the support between the supporting chassis 4 and the ground 9 when it rotates. The force required by the friction force saves time and effort in operation. In addition, the existence of the bearing 5 can also offset the radial rotation with the hook as the radius during the cover opening process, which is convenient for operation. Through the above improvements, the portable manhole cover opener of the utility model is easy to operate, saves time and labor, and can be better applicable to various road surfaces.

The above-mentioned embodiment is an inspiration, and through the above-mentioned description content, relevant staff can make various changes and modifications within the scope of not departing from the idea of this utility model. The technical scope of this utility model is not limited to the content recorded in the specification.

Claims (4)

1. a Portable manhole cover opener, including support, screw rod, pull bar and support chassis, screw rod is threaded through support One end, is provided with a spike bottom the other end of support, pull bar is threaded through on support between screw rod and a spike and leans on The position of near spike, the bottom of pull bar is provided with drag hook, and the top of screw rod is provided with spanner, it is characterised in that: described screw rod Bottom be provided with bearing, bearing is fixed in support chassis.

Portable manhole cover opener the most according to claim 1, it is characterised in that: described screw rod is trapezoidal screw.

Portable manhole cover opener the most according to claim 1, it is characterised in that: described pull bar is solid by butterfly nut On support.

Portable manhole cover opener the most according to claim 1, it is characterised in that: the bottom of described spike is card Structure.