Well lid opening device

Abstract

The utility model relates to a well lid opening device which comprises a lower cross beam, an upper cross beam, a jack, two lower cushion blocks and two strip-shaped connecting pieces, the two lower cushion blocks are arranged on the lower sides of the two ends of the lower cross beam side by side, the jack is installed on the middle section of the lower cross beam, and the middle section of the upper cross beam is installed on a lifting piston of the jack. The upper cross beam spans above the lower cross beam; the two strip-shaped connecting pieces are located on the two sides of the lower cross beam respectively, the upper ends of the two strip-shaped connecting pieces are installed at the two ends of the upper cross beam respectively, and limiting components are arranged at the lower ends of the two strip-shaped connecting pieces. According to the well lid opening device, construction workers can conveniently open the well lid on the road surface, operation is fast and safe, rapid construction is facilitated, and damage to the well lid can be effectively avoided or reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a manhole cover opening device. Background Art

[0002] As we all know, during the construction of municipal projects or building parks, manhole covers are mainly used in engineering inspection wells, playing a very important role in pipeline dredging and maintenance.

[0003] At present, most of the manhole covers are made of metal and are heavy. They are exposed on the surface for a long time. Some manhole covers are prone to rust due to long-term non-opening; some manhole covers are easily deformed due to the continuous rolling of vehicles, and the gap between some manhole covers and the well ring is stuck by gravel, making it difficult to open the manhole cover. The traditional method of opening the manhole cover is for workers to use a crowbar to open it, which is not only time-consuming and labor-intensive, but also has low work efficiency and seriously affects the construction progress. In addition, workers forcibly pry it open, which is easy to damage the manhole cover. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a manhole cover opening device, which can facilitate construction workers to open the road manhole cover, which is not only quick and safe to operate, and is conducive to rapid construction, but also can effectively avoid or reduce damage to the manhole cover. The adopted technical solution is as follows:

[0005] A manhole cover opening device, characterized in that it includes a lower crossbeam, an upper crossbeam, a jack, two lower pads and two strip connecting members, the two lower pads are arranged side by side on the lower sides of the two ends of the lower crossbeam, the jack is installed on the middle section of the lower crossbeam, the middle section of the upper crossbeam is installed on the lifting piston of the jack, and the upper crossbeam spans above the lower crossbeam; the two strip connecting members are respectively located on both sides of the lower crossbeam, the upper ends of the two strip connecting members are respectively installed at the two ends of the upper crossbeam, and the lower ends of the two strip connecting members are provided with limiting components.

[0006] The manhole cover opening device of the utility model is suitable for opening a manhole cover having the following characteristics: the manhole cover is provided with at least two opening holes which are symmetrically arranged relative to the center of the manhole cover.

[0007] When in use, the manhole cover opening device is placed at the manhole cover that needs to be opened, so that the two lower pads are on both sides of the manhole ring, the lower crossbeam spans directly above the manhole cover, and the lower ends of the two strip connecting pieces and the limiting components are respectively passed through the corresponding opening holes on the manhole cover, and then the limiting components are used to limit the lower ends of the strip connecting pieces so that they cannot separate from the opening holes on the manhole cover; then, the operating handle of the jack is pressed to lift the lifting piston of the jack upward, and the two strip connecting pieces are driven to rise through the upper crossbeam, so that the limiting components at the lower ends of the two strip connecting pieces are in close contact with the lower side of the manhole cover, and the manhole cover is lifted to separate it from the manhole ring, so as to achieve the purpose of opening the manhole cover. Since the jack is installed on the middle section of the lower beam, the middle section of the upper beam is installed on the lifting piston of the jack, the upper beam spans above the lower beam, and the two opening holes on the manhole cover are symmetrically arranged, when the jack is started to pull up, the manhole cover will move vertically upward and be evenly stressed, which can effectively avoid or reduce damage to the manhole cover and its surrounding well ring.

[0008] As a preferred solution of the utility model, the lower cross beam and the upper cross beam are both arranged in the horizontal direction, and the upper cross beam and the lower cross beam are perpendicular to each other, thereby making the pulling force of the two strip-shaped connecting members on the manhole cover more uniform.

[0009] As a preferred solution of the utility model, the lower pad is a long strip pad, and the two ends of the lower cross beam are detachably mounted on the upper middle side of the two long strip pads, thereby making the load-bearing capacity of the lower cross beam stronger and making the overall structure of the manhole cover opening device more stable.

[0010] As a further preferred solution of the utility model, the long strip pads are made of square wood. Specifically, the middle sections of the two long strip pads can be fixed to the two ends of the lower cross beam by screw connection.

[0011] As a preferred solution of the utility model, the lower cross beam and the upper cross beam are both made of steel sections.

[0012] As a preferred solution of the utility model, the strip-shaped connecting member adopts a pull rod. Specifically, the pull rod can be a metal pull rod, such as an iron rod.

[0013] In the case where the opening hole on the manhole cover is a strip-shaped through hole, as a further preferred embodiment of the utility model, the upper section of the pull rod can be rotatably mounted on the corresponding end of the upper crossbeam, and a rotating handle is fixed to the upper end of the pull rod; the limiting component is a strip-shaped limiting block, and the strip-shaped limiting block is fixed to the lower end of the pull rod. Usually, the length and width of the strip-shaped limiting block are slightly smaller than the length and width of the opening hole, respectively, and the length of the strip-shaped limiting block is greater than the width of the opening hole. After the lower end of the pull rod and the strip-shaped limiting block are passed through the opening hole, the rotating handle can be rotated to drive the pull rod to rotate the strip-shaped limiting block, so that the length direction of the strip-shaped limiting block is consistent with the width direction of the opening hole, thereby using the strip-shaped limiting block to hook the bottom surface of the manhole cover, ensuring that the subsequent pull rod can lift the manhole cover smoothly.

[0014] As a further preferred solution of the utility model, the middle portion of the strip-shaped limit block is connected to the lower end of the pull rod, so that the strip-shaped limit block and the lower end of the pull rod form a T-shaped structure.

[0015] As a further preferred solution of the utility model, both ends of the upper crossbeam are provided with through holes that penetrate from top to bottom; the upper section of the pull rod is provided with a screw section, which passes through the corresponding through holes, and a limit nut is installed on the screw section, and the limit nut is located on the upper side of the upper crossbeam. With this structure, the effective length of the pull rod (i.e., the length of the pull rod from the upper crossbeam to the limit component) can be changed by adjusting the position of the limit nut on the screw section, so that when the lifting piston of the jack is lifted upward, the limit components at the lower ends of the two strip-shaped connecting pieces can simultaneously contact the lower side of the manhole cover, ensuring that the manhole cover is evenly stressed.

[0016] As another preferred solution of the utility model, the strip-shaped connecting member is a drawstring, and the limiting member is a hook. Specifically, the drawstring can be a steel rope. After being inserted into the opening hole, the hook can be used to hook the bottom of the manhole cover to ensure that the manhole cover is lifted smoothly.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] This manhole cover opening device can be used for opening manhole covers on the road surface. It uses the thrust of the jack instead of manpower, and is quick, labor-saving and safe to operate. It can easily open manhole covers that are difficult to open, which is conducive to rapid construction. Moreover, when the jack is started to pull up, the manhole cover will move vertically upward and the force is evenly applied, which can effectively avoid or reduce damage to the manhole cover and its surrounding well ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a preferred embodiment of the utility model.

[0020] Figure 2 yes Figure 1 Top view of the . DETAILED DESCRIPTION

[0021] like Figure 1-Figure 2 As shown, the manhole cover opening device includes a lower cross beam 1, an upper cross beam 2, a jack 3, two long strip pads 4 and two pull rods 5. The two long strip pads 4 are arranged side by side, and the lower cross beam 1 is arranged across the upper middle side of the two long strip pads 4; the jack 3 is installed on the middle section of the lower cross beam 1, the middle section of the upper cross beam 2 is installed on the lifting piston 31 of the jack 3, and the upper cross beam 2 spans above the lower cross beam 1; the two pull rods 5 are respectively located on both sides of the lower cross beam 1, and the upper ends of the two pull rods 5 are respectively installed at the two ends of the upper cross beam 2, and the lower ends of the two pull rods 5 are connected to limiting components.

[0022] In this embodiment, the lower cross beam 1 and the upper cross beam 2 are both arranged in the horizontal direction, and the upper cross beam 2 and the lower cross beam 1 are perpendicular to each other.

[0023] In this embodiment, the long strip spacer 4 is made of square wood, and the long strip spacer 4 can be connected to the lower sides of both ends of the lower beam 1 by screw fixation; the lower beam 1 and the upper beam 2 are both made of steel; and the pull rod 5 is made of iron rod.

[0024] In this embodiment, both ends of the upper crossbeam 2 are provided with through holes 201 that penetrate from top to bottom; the upper section of the pull rod 5 is provided with a screw section 51, which passes through the corresponding through hole 201, and a limit nut 52 is installed on the screw section 51, and the limit nut 52 is located on the upper side of the upper crossbeam 2; a rotating handle (not shown in the figure) is fixed to the upper end of the pull rod 5; the limit component is a strip limit block 6, the middle part of the strip limit block 6 is connected to the lower end of the pull rod 5, and the strip limit block 6 and the lower end of the pull rod 5 form a T-shaped structure. With this structure, the effective length of the pull rod 5 (i.e., the length of the pull rod 5 from the upper crossbeam 2 to the strip limit block 6) can be changed by adjusting the position of the limit nut 52 on the screw section 51, ensuring that the two pull rods 5 can smoothly lift the manhole cover 50 upward.

[0025] The following is a brief description of the use of this manhole cover opening device:

[0026] This manhole cover opening device is suitable for opening a manhole cover 50 having the following characteristics: the manhole cover 50 is provided with at least two opening holes 501 symmetrically arranged relative to the center of the manhole cover, the opening holes 501 are bar-shaped through holes, the length and width of the bar-shaped limit block 6 are slightly smaller than the length and width of the opening hole 501, respectively, and the length of the bar-shaped limit block 6 is greater than the width of the opening hole 501.

[0027] When in use, this manhole cover opening device is placed at the manhole cover 50 that needs to be opened, so that the two long strip pads 4 are on both sides of the manhole ring 60, the lower crossbeam 1 spans directly above the manhole cover 50, and the lower ends of the two pull rods 5 and the strip limit blocks 6 are respectively passed through the corresponding opening holes 501 on the manhole cover 50, and then the rotating handle is rotated to drive the pull rod 5 to rotate the strip limit blocks 6 so that the length direction of the strip limit blocks 6 is consistent with the width direction of the opening hole 501, and the strip limit blocks 6 are used to hook the bottom surface of the manhole cover 50; then, by pressing the operating handle 31 of the jack 3, the lifting piston 31 of the jack 3 is lifted upward, and the two pull rods 5 are driven to rise through the upper crossbeam 2, so that the strip limit blocks 6 at the lower ends of the two strip connecting members are in close contact with the lower side surface of the manhole cover 50, and the manhole cover 50 is lifted to separate it from the manhole ring 60, so as to achieve the purpose of opening the manhole cover 50.

[0028] In addition, it should be noted that the names of the various parts of the specific embodiments described in this specification may be different, and any equivalent or simple changes made based on the structure, features and principles described in the utility model patent concept are included in the protection scope of the utility model patent. The technical personnel of the technical field to which the utility model belongs can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.

Claims

1. A manhole cover opening device, characterized in that: It includes a lower crossbeam, an upper crossbeam, a jack, two lower pads and two strip connecting pieces. The two lower pads are arranged side by side on the lower sides of the two ends of the lower crossbeam, the jack is installed on the middle section of the lower crossbeam, the middle section of the upper crossbeam is installed on the lifting piston of the jack, and the upper crossbeam spans above the lower crossbeam; the two strip connecting pieces are respectively located on both sides of the lower crossbeam, the upper ends of the two strip connecting pieces are respectively installed on the two ends of the upper crossbeam, and the lower ends of the two strip connecting pieces are both provided with limiting components.

2. A manhole cover opening device according to claim 1, characterized in that: The lower cross beam and the upper cross beam are both arranged in the horizontal direction, and the upper cross beam and the lower cross beam are perpendicular to each other.

3. A manhole cover opening device according to claim 1, characterized in that: The lower pad is a long strip pad, and the two ends of the lower cross beam are detachably mounted on the upper middle sides of the two long strip pads.

4. A manhole cover opening device according to claim 3, characterized in that: The long strip spacer is made of square wood.

5. A manhole cover opening device according to claim 1, characterized in that: The lower cross beam and the upper cross beam are both made of steel sections.

6. A manhole cover opening device according to any one of claims 1 to 5, characterized in that: The strip-shaped connecting piece is a pull rod.

7. A manhole cover opening device according to claim 6, characterized in that: The upper section of the pull rod is rotatably mounted on the corresponding end of the upper cross beam, and a rotating handle is fixed to the upper end of the pull rod; the limiting component is a strip-shaped limiting block, and the strip-shaped limiting block is fixed to the lower end of the pull rod.

8. A manhole cover opening device according to claim 7, characterized in that: The middle part of the strip-shaped limit block is connected to the lower end of the pull rod, so that the strip-shaped limit block and the lower end of the pull rod form a T-shaped structure.

9. A manhole cover opening device according to claim 7, characterized in that: Both ends of the upper crossbeam are provided with through holes that penetrate up and down; the upper section of the pull rod is provided with a screw section, which passes through the corresponding through holes, and a limiting nut is installed on the screw section, and the limiting nut is located on the upper side of the upper crossbeam.

10. A manhole cover opening device according to any one of claims 1 to 5, characterized in that: The strip-shaped connecting piece is a drawstring; the limiting component is a hook.

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