Device for opening manhole cover in labor-saving manner

Abstract

The device is used for opening the manhole cover, the manhole cover is hinged to the well wall, an opening hole is formed in the manhole cover, the device comprises a cushion block, a transverse rod and a threaded rod, the cushion block is placed on the manhole cover, a connecting hole is formed in the middle section of the transverse rod, the threaded rod is connected into the connecting hole in a threaded mode, and the transverse rod is arranged in the connecting hole. The bottom end of the threaded rod is fixedly connected with a stop lever matched with an opening hole of the well lid. A cushion block is placed on a well lid, a stop lever of a threaded rod extends into an opening hole, the threaded rod is rotated, the stop lever and the opening hole are staggered, the threaded rod is clamped on the well lid, an operator lifts the other end of a transverse rod, and the lever principle is utilized, so that force needed for opening the well lid is greatly saved, the working intensity is reduced, the working efficiency is improved, the number of structural components is small, and cost is low. And the cushion block is positioned on the manhole cover, so that the road surface cannot be damaged in the manhole cover opening process.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole cover tools, in particular to a device for opening an inspection manhole cover with minimal effort. Background Art

[0002] Municipal pipe networks are crucial urban infrastructure. To meet the demands of pipe network maintenance and connection, inspection wells, each with a manhole cover, must be installed during construction. Currently, commonly used manhole covers are made of ductile iron, with pre-set opening holes. Operators can open the covers using tools such as metal hooks. However, this process often requires considerable force, increasing workload and reducing efficiency. Utility Model Content

[0003] In view of the shortcomings of the prior art, the present invention provides a device for opening a manhole cover with less effort. In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0004] A device for opening an inspection manhole cover with minimal effort is disclosed. The device is used to open the manhole cover. The manhole cover is hinged on the manhole wall and is provided with an opening hole. The device comprises a pad, a cross bar and a threaded rod. The pad is placed on the manhole cover. A connecting hole is provided in the middle section of the cross bar. The threaded rod is threadedly connected in the connecting hole. The bottom end of the threaded rod is fixedly connected to a blocking rod that matches the opening hole of the manhole cover.

[0005] Furthermore, a cross-shaped rotating handle is fixedly connected to the top end of the threaded rod.

[0006] Furthermore, a rubber pad is fixedly connected to the bottom of the cushion block.

[0007] Furthermore, a groove for placing the cross bar is provided on the top surface of the pad.

[0008] Furthermore, an anti-skid rubber tube is fixedly connected to one end of the cross bar away from the pad.

[0009] Furthermore, a nut is threadedly connected to the threaded rod, and the nut is located above the cross bar.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] By placing a pad on the manhole cover, extending the blocking rod of the threaded rod into the opening hole, rotating the threaded rod to misalign the blocking rod with the opening hole, and clamping the threaded rod on the manhole cover, the operator lifts the other end of the cross bar and utilizes the lever principle, which greatly saves the force required to open the manhole cover, reduces work intensity, and improves work efficiency. It has fewer structural components and is easy to assemble on site. The pad is located on the inspection manhole cover and will not damage the road surface during the process of opening the manhole cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0013] Figure 1 This is a schematic diagram of the main structure of an embodiment of the utility model;

[0014] Figure 2 This is a schematic diagram of the top structure of an embodiment of the utility model.

[0015] In the above drawings: manhole cover 1, opening hole 2, pad 3, cross bar 4, threaded rod 5, stop rod 6, rotating handle 7, rubber pad 8, groove 9, anti-slip rubber tube 10, nut 11. DETAILED DESCRIPTION

[0016] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0017] Please refer to Figure 1 、 Figure 2 As shown, a device for opening an inspection manhole cover with low effort is used to open the manhole cover 1. The manhole cover 1 is hinged on the manhole wall. An opening hole 2 is provided on the manhole cover 1, including a pad 3, a cross bar 4 and a threaded rod 5. The pad 3 is placed on the manhole cover 1, and a connecting hole is provided in the middle section of the cross bar 4. The threaded rod 5 is threadedly connected in the connecting hole, and the bottom end of the threaded rod 5 is fixedly connected to a blocking rod 6 that cooperates with the opening hole 2 of the manhole cover 1.

[0018] Working principle: Place the pad 3 on the manhole cover 1, extend the blocking rod 6 of the threaded rod 5 into the opening hole 2, rotate the threaded rod 5 to make the blocking rod 6 misaligned with the opening hole 2, and clamp the threaded rod 5 on the manhole cover 1. The operator lifts the other end of the cross bar 4 and uses the lever principle to greatly save the force required to open the manhole cover 1, reduce work intensity, and improve work efficiency. It has fewer structural components and is easy to assemble on site. The pad 3 is located on the inspection manhole cover 1 and will not damage the road surface during the opening of the manhole cover 1.

[0019] In this embodiment, please refer to Figure 1 、 Figure 2 As shown, the top of the threaded rod 5 is fixedly connected with a cross-shaped rotating handle 7. Through the cross-shaped rotating handle 7, it is easy to rotate the threaded rod 5 on the cross bar 4, so that the blocking rod 6 is clamped under the manhole cover 1, which saves effort and is easy to operate. In addition, the threaded rod 5 is threadedly connected to the cross bar 4, which is used to clamp the threaded rod 5 on the cross bar 4, making it easy to lift the manhole cover 1 and easy to use.

[0020] In this embodiment, please refer to Figure 1As shown, a rubber pad 8 is fixedly connected to the bottom of the pad 3. The rubber pad 8 increases the friction between the pad 3 and the manhole cover 1, preventing the pad 3 from sliding during the opening of the manhole cover 1 and causing safety risks. At the same time, the rubber pad 8 better adapts to the concave and convex structure of the manhole cover 1, further preventing the pad 3 from sliding.

[0021] In this embodiment, please refer to Figure 1 、 Figure 2 As shown, a groove 9 for placing the cross bar 4 is provided on the top surface of the cushion block 3. It is convenient to clamp the cross bar 4 in the groove 9 to improve the safety of the operation.

[0022] In this embodiment, please refer to Figure 1 、 Figure 2 As shown, an anti-skid rubber tube 10 is fixedly connected to one end of the cross bar 4 away from the pad 3. It is convenient for the operator to lift the cross bar 4 to open the manhole cover 1, and it is easy to use.

[0023] In this embodiment, please refer to Figure 1 As shown, the threaded rod 5 is threadedly connected with a nut 11, and the nut 11 is located above the cross bar 4. After the threaded rod 5 is clamped on the manhole cover 1, the nut 11 is rotated to abut against the cross bar 4 to clamp the cross bar 4 on the threaded rod 5, thereby preventing the threaded rod 5 from moving during the opening of the manhole cover 1 and improving safety.

[0024] The crossbar 4 can be a telescopic rod to increase the moment of the crossbar 4 and save effort.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A device for opening a manhole cover with minimal effort, which is used to open the manhole cover. The manhole cover is hinged on the manhole wall and has an opening hole. The device is characterized in that: It includes a pad, a cross bar and a threaded rod. The pad is placed on the manhole cover. A connecting hole is opened in the middle section of the cross bar. The threaded rod is threadedly connected in the connecting hole. The bottom end of the threaded rod is fixedly connected to a blocking rod that matches the opening hole of the manhole cover.

2. The device for opening a manhole cover with reduced effort according to claim 1, characterized in that: The top end of the threaded rod is fixedly connected with a cross-shaped rotating handle.

3. The device for opening a manhole cover with less effort according to claim 1, characterized in that: The bottom of the cushion block is fixedly connected with a rubber pad.

4. The device for opening a manhole cover with reduced effort according to claim 1, characterized in that: A groove for placing a cross bar is provided on the top surface of the cushion block.

5. The device for opening a manhole cover with less effort according to claim 1, characterized in that: An anti-skid rubber tube is fixedly connected to one end of the cross bar away from the cushion block.

6. The device for opening a manhole cover with less effort according to claim 1, characterized in that: A nut is threadedly connected to the threaded rod, and the nut is located above the cross bar.

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