Portable invisible well lid opening device, opening method and mounting method

Abstract

The invention relates to the technical field of invisible well lid opening, and particularly discloses a portable invisible well lid opening device, an opening method and a mounting method. The device comprises a moving part, a manual lifting part, an H-shaped lifting frame and a foldable main body lifting frame, in the main body hoisting frame, the manual hoisting part is connected with a top frame ring of the main body hoisting frame; the manual lifting component is connected with the symmetrical midpoint of the H-shaped lifting frame through a first chain-shaped connecting piece of the manual lifting component; the H-shaped lifting frame is connected with a lifting hole of a to-be-opened invisible well lid in a clamped mode through a plurality of second chain-shaped connecting pieces of the H-shaped lifting frame. And the moving part is movably connected with the bottom of the main body hoisting frame. When an invisible well lid is opened, a hand chain block is driven by dragging a manual chain, then a second iron chain drives an H-shaped lifting frame to have a lifting function, the opening effect can be achieved at the moment, the device is easy to manufacture and convenient and fast to operate, the invisible well lid can be easily opened, and personnel investment is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of invisible manhole cover opening, and in particular to a portable invisible manhole cover opening device, an opening method and an installation method. Background Art

[0002] In existing municipal road projects, most municipal manhole covers are designed to be invisible, and the top of the inspection well is paved with marble. However, due to the heavy weight of the stone, it is inconvenient to install and open, and it requires multiple people to open it at the same time, so it is difficult to meet the needs. For this reason, those skilled in the art have proposed invisible manhole covers that are easy to open and designed invisible manhole cover opening devices; currently, invisible manhole cover opening devices in this field include the following categories: manual opening devices, electric opening devices, hydraulic opening devices, and pneumatic opening devices; among them, manual opening devices are the most common equipment in actual construction operations due to their light weight and simple structure. However, although the existing manual opening devices are low in cost and easy to operate, they require high labor intensity and need to be assembled on site, such as the existing lever-type stainless steel invisible manhole cover opening vehicles and screw-type manhole cover lifting vehicles, and they pose a greater threat to the safety of operators in special scenarios.

[0003] Based on this, those skilled in the art urgently need to improve the existing manual invisible manhole cover opening device to overcome the defects of the manual opening device in the above-mentioned prior art, such as high labor intensity and greater threat to the safety of the operator. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects existing in the above-mentioned prior art, thereby providing a portable invisible manhole cover opening device, opening method and installation method.

[0005] A portable invisible manhole cover opening device comprises a moving part, a manual lifting part, an H-shaped lifting frame and a foldable main body lifting frame; Inside the main lifting frame: The manual lifting component is connected to the top frame ring of the main lifting frame; the manual lifting component is connected to the symmetrical midpoint of the H-shaped lifting frame through the first chain-type connecting piece it comes with; The H-shaped lifting frame is connected to the lifting hole of the invisible manhole cover to be opened through a plurality of second chain-type connecting pieces provided therewith; The movable component is movably connected to the bottom of the main body lifting frame.

[0006] Preferably, the manual lifting components include: a hand chain hoist and a hook; The top of the hand chain hoist is fixedly connected to the hook; The first chain-type connecting piece of the hand chain hoist is connected to the H-shaped lifting frame; The hand chain hoist is started based on its own manual chain.

[0007] Preferably, the main body lifting frame is composed of a top frame, a plurality of longitudinal supports and a horizontal frame; The top ends of the plurality of longitudinal brackets are connected to the bottom surface of the top frame via hinges; The two ends of the horizontal frame are slidably connected to the side walls of the plurality of longitudinal supports and are snap-fitted to the buckles on the longitudinal supports; The top frame is provided with a first tie bar; the bottom surface of the first tie bar is provided with a first annular connecting piece; The hook is movably connected to the first annular connecting piece.

[0008] Preferably, the H-shaped lifting frame comprises: an H-shaped frame body and a plurality of second chain-type connecting members; A plurality of the second chain-type connecting members are movably connected to the H-shaped frame; The second chain-type connecting member is provided with n groups of first hooks from top to bottom, where n is a positive integer and n≥1.

[0009] Preferably, the first hook on the second chain-type connecting member is T-shaped.

[0010] Preferably, the first hook on the second chain-type connecting member is umbrella-shaped.

[0011] A portable invisible manhole cover opening method is implemented using a portable invisible manhole cover opening device. The opening method includes the following steps: Assemble the main lifting frame: open the multiple longitudinal brackets along the hinge direction, and move the horizontal frame located at the top frame downward and engage it with the buckles on the longitudinal brackets; Hang the manual lifting component connected to the H-shaped lifting frame on the first ring connector of the top frame through the hook to complete the assembly of the main lifting frame; Connect the second chain-type connector to the lifting hole of the invisible manhole cover to be opened; Pull the manual chain of the hand chain hoist to raise or lower the invisible manhole cover to be opened, which is indirectly connected to the hand chain hoist, to complete the opening.

[0012] A portable invisible manhole cover installation method includes a portable invisible manhole cover opening method, and further includes the following steps: Move the assembled main lifting frame to the stacked invisible manhole covers; Pass the second chain-type connector through the lifting holes of multiple invisible manhole covers from top to bottom in sequence, and connect it with the lifting hole of each invisible manhole cover; Based on the moving parts, the invisible manhole cover is moved to the location to be installed in turn, and the manual chain of the hand chain hoist is pulled to make the invisible manhole cover to be installed, which is indirectly connected to the hand chain hoist, rise or fall to complete the installation.

[0013] The technical solution of the present invention has the following advantages: 1. The present invention provides a lifting mechanism. When in use, the universal wheels and locking pedals provided at the bottom of the invisible manhole cover opening device are convenient for movement and positioning. When opening the invisible manhole cover, it is only necessary to drag the manual chain to transmit the hand hoist, and then the second iron chain drives the H-shaped lifting frame to have the function of lifting. When the H-shaped lifting frame is lowered, the first hook is engaged with the slot of the invisible manhole cover, and then the manual chain is dragged in the reverse direction, so that the lifting frame is lifted up under the transmission connection of the hand hoist and the second iron chain. At this time, the opening function can be realized. The device is simple to manufacture and easy to operate. It can easily open the invisible manhole cover and reduce manpower input.

[0014] 2. The present invention provides an invisible manhole cover opening device, which is composed of a vehicle body bracket consisting of a main lifting frame and an H-shaped lifting frame. Each component has a groove inside, which reduces material consumption while also reducing the overall weight, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the axial structure of one side of the invisible manhole cover opening device proposed by the present invention; Figure 2 This is a structural schematic diagram of the other axial side of the invisible manhole cover opening device proposed by the present invention; Figure 3 This is a front view structural diagram of an invisible manhole cover opening device proposed by the present invention; Figure 4 This is a side structural schematic diagram of an invisible manhole cover opening device proposed by the present invention; Figure 5 This is a schematic diagram of the top structure of an invisible manhole cover opening device proposed by the present invention.

[0017] Description of reference numerals: 1 longitudinal bracket, 2 universal wheel, 3 locking pedal, 41 horizontal frame, 42 second tie rod, 5 top frame, 6 first tie rod, 7 first annular connector, 8 hook, 9 hand hoist, 10 manual chain, 11 first chain connector, 12 second hook, 13 second annular connector, 14 H-type frame, 15 second chain connector, 16 first hook. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0021] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] Example 1 Although the existing manual opening device is low in cost and easy to operate, it requires high labor intensity and needs to be assembled on site, such as the existing lever-type stainless steel invisible manhole cover opening vehicle and screw-type manhole cover lifting vehicle, and poses a greater threat to the operator's safety in special scenarios.

[0023] To this end, this embodiment 1 improves the existing manual invisible manhole cover opening device to address the technical problems of the manual opening device in the above-mentioned prior art, such as the high labor intensity required and the greater threat to the safety of the operator.

[0024] This embodiment discloses a portable invisible manhole cover opening device, comprising a moving component, a manual lifting component, an H-shaped lifting frame, and a foldable main body lifting frame; Inside the main lifting frame: The manual lifting component is connected to the top frame 5 rings of the main lifting frame; the manual lifting component is connected to the symmetrical midpoint of the H-shaped lifting frame through the first chain-type connecting piece 11 provided with it; The H-shaped lifting frame is connected to the lifting hole of the invisible manhole cover to be opened through multiple second chain-type connecting parts 15 provided by it; The moving part is movably connected to the bottom of the main lifting frame.

[0025] Specifically: like Figure 2 As shown, the manual lifting components include a hand chain hoist 9 and a hook 8; the top of the hand chain hoist 9 is fixedly connected to the hook 8; the first chain-type connector 11 of the hand chain hoist 9 is connected to the H-shaped lifting frame; the hand chain hoist 9 is activated by its own manual chain 10. In this embodiment, the moving component is a universal movable device with a built-in lock. Specifically, this embodiment uses a universal wheel 3 with a built-in locking pedal 2 to enable the main lifting frame to be moved or fixed according to actual needs.

[0026] like Figure 1 As shown, it should be noted that in order to make the whole device easy to carry and suitable for both heavy invisible manhole covers and light invisible manhole covers, a foldable main lifting frame is designed in this embodiment; in this embodiment, the main lifting frame is composed of a top frame 5, multiple longitudinal brackets 1 and a horizontal frame 41; the top ends of the multiple longitudinal brackets 1 are connected to the bottom surface of the top frame 5 by hinges; the horizontal frame 41 is slidably connected to the side walls of the multiple longitudinal brackets 1, and is snap-fitted with the buckles on the longitudinal brackets 1; a first tie rod 6 is provided on the top frame 5; a first annular connector 7 is provided on the bottom surface of the first tie rod 6; and a hook 8 is movably connected to the first annular connector 7. In this embodiment, as shown in FIG. Figure 1 As shown, there are four longitudinal supports 1 that form a rectangular parallelepiped shape with the top frame 5; As an improved embodiment, the number of longitudinal supports 1 is 6 or 8, which is more suitable for round cast iron invisible manhole covers. The number of first tie bars 6 is adapted to the structure of the top frame 5 to ensure stability.

[0027] Heavy-duty invisible manhole covers are permitted to withstand a load of 360 kN or more than a Class-20 vehicle during factory inspection; light-duty invisible manhole covers are permitted to withstand a load of 210 kN or more than a Class-10 vehicle during factory inspection. In this embodiment, to further stabilize the main lifting frame, a second tie bar 42 is provided. During actual assembly of the main lifting frame, the mechanical connection between the second tie bar 42 and other components can be configured based on the actual scenario. For example, the second tie bar 420 can be directly installed on the two universal wheels 2 by a staff member to enhance stability. Alternatively, it can be configured to slide with the longitudinal support 1, similar to the horizontal frame 41.

[0028] like Figure 1 As shown, the H-shaped lifting frame includes: an H-shaped frame body 14 and a plurality of second chain-type connecting members 15; A second annular connector 13 is provided at the center point of the top surface of the H-shaped frame 14; a second hook 12 is provided at the bottom end of the first chain-shaped connector 11; the second hook 12 is connected to the second annular connector 13; A plurality of second chain-type connecting members 15 are movably connected to the H-shaped frame 14; The second chain-type connecting member 15 is provided with n sets of first hooks 16 from top to bottom, where n is a positive integer and n≥1. In this embodiment, both the H-shaped frame and the main lifting frame are provided with grooves, and both are made of stainless steel. It should be noted that when the main lifting frame is not assembled, the horizontal frame 41 is located in the groove of the top frame 5; As an improved embodiment, the first hook 16 on the second chain-type connector 15 is T-shaped. It should be noted that in actual use, the operator inserts the horizontal end of the T-shaped hook into the lifting hole of the invisible manhole cover to be opened, and rotates it so that the horizontal end of the T-shaped hook engages with the lifting hole under the action of gravity; As an improved embodiment, the first hook 16 on the second chain-type connector 15 is umbrella-shaped, specifically a retractable umbrella-shaped structure in this embodiment. It should be noted that in actual use, the umbrella-shaped structure is more secure than a T-shaped hook and more efficient than the bolt-type locking and limiting structure of the prior art. In actual use, the retractable umbrella-shaped hook is inserted from one end of the umbrella into the lifting hole of the invisible manhole cover to be opened, and the umbrella cover is pushed and pulled to engage the umbrella cover with the lifting hole of the invisible manhole cover to be opened.

[0029] As an improved implementation, n groups of first hooks 16 are provided on the second chain-type connecting member 15 from top to bottom, and multiple types of first hooks 16 can be arranged according to actual needs.

[0030] Example 2 A portable invisible manhole cover opening method is implemented using the portable invisible manhole cover opening device of Example 1. The opening method includes the following steps: Assemble the main lifting frame: open the multiple longitudinal brackets 1 along the hinge direction, and move the horizontal frame 41 located at the top frame 5 onto the multiple longitudinal brackets 1 and engage with the buckles on the longitudinal brackets 1; Hang the manual lifting component connected to the H-shaped lifting frame on the first annular connector 7 of the top frame 5 through the hook 8 to complete the assembly of the main lifting frame; Connect the second chain-type connector 15 to the lifting hole of the invisible manhole cover to be opened; Pull the manual chain 10 of the hand chain hoist 9 to raise or lower the invisible manhole cover to be opened that is indirectly connected to the hand chain hoist 9 to complete the opening.

[0031] Example 3 A portable invisible manhole cover installation method includes the portable invisible manhole cover opening method of embodiment 2, and further includes the following steps: Move the assembled main lifting frame to the stacked invisible manhole covers; Pass the second chain-type connector 15 through the lifting holes of multiple invisible manhole covers from top to bottom, and connect with the lifting holes of each invisible manhole cover; Based on the moving parts, the invisible manhole cover is moved to the place to be installed in turn, and the manual chain 10 of the hand chain hoist 9 is pulled to make the invisible manhole cover to be installed indirectly connected to the hand chain hoist 9 rise or fall to complete the installation.

[0032] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A portable invisible manhole cover opening device, comprising a moving part, characterized in that: Also includes: Manual lifting components, H-type lifting frames and foldable main lifting frames; Inside the main lifting frame: The manual lifting component is connected to the top frame (5) of the main lifting frame; the manual lifting component is connected to the symmetrical midpoint of the H-shaped lifting frame through the first chain-type connecting piece (11) provided by the manual lifting component; The H-shaped lifting frame is connected to the lifting hole of the invisible manhole cover to be opened through a plurality of second chain-type connecting pieces (15) provided therewith; The moving component is movably connected to the bottom of the main body lifting frame.

2. The portable invisible manhole cover opening device according to claim 1 is characterized in that: The manual lifting components include: a hand chain hoist (9) and a hook (8); The top end of the hand chain hoist (9) is fixedly connected to the hook (8); The first chain-type connecting piece (11) of the hand chain hoist (9) is connected to the H-shaped lifting frame; The hand chain hoist (9) is started based on a built-in manual chain (10).

3. The portable invisible manhole cover opening device according to claim 2 is characterized in that: The main body lifting frame is composed of a top frame (5), a plurality of longitudinal brackets (1) and a horizontal frame (41); The top ends of the plurality of longitudinal brackets (1) are connected to the bottom surface of the top frame (5) via hinges; The horizontal frame (41) is slidably connected to the side walls of the plurality of longitudinal brackets (1) and is snap-fitted to the buckles on the longitudinal brackets (1); The top frame (5) is provided with a first tie rod (6); the bottom surface of the first tie rod (6) is provided with a first annular connecting piece (7); The hook (8) is movably connected to the first annular connecting member (7).

4. The portable invisible manhole cover opening device according to claim 3 is characterized in that: The H-shaped lifting frame comprises: an H-shaped frame body (14) and a plurality of second chain-type connecting members (15); A plurality of the second chain-type connecting members (15) are movably connected to the H-shaped frame (14); The second chain-type connecting member (15) is provided with n groups of first hooks (16) from top to bottom, where n is a positive integer and n≥1.

5. The portable invisible manhole cover opening device according to claim 4 is characterized in that: The first hook (16) on the second chain-type connecting member (15) is T-shaped.

6. The portable invisible manhole cover opening device according to claim 4, characterized in that: The first hook (16) on the second chain-type connecting member (15) is umbrella-shaped.

7. A portable invisible manhole cover opening method, characterized in that: The portable invisible manhole cover opening device according to any one of claims 5 to 6 is used to realize the opening method, which comprises the following steps: Assembling the main body lifting frame: opening the plurality of longitudinal brackets (1) along the hinge direction, and moving the horizontal frame (41) located at the top frame (5) downward and engaging it with the buckles on the longitudinal brackets (1); Hanging the manual lifting component connected to the H-shaped lifting frame on the first annular connecting piece (7) of the top frame (5) through a hook (8) to complete the assembly of the main lifting frame; The second chain-type connecting piece (15) is connected to the lifting hole of the invisible manhole cover to be opened; The manual chain (10) of the hand chain hoist (9) is pulled to raise or lower the invisible manhole cover to be opened which is indirectly connected to the hand chain hoist (9), thereby completing the opening.

8. A portable invisible manhole cover installation method, characterized in that: The portable invisible manhole cover opening method according to claim 7 further comprises the following steps: Move the assembled main lifting frame to the stacked invisible manhole covers; The second chain-type connecting member (15) is passed through the lifting holes of the plurality of invisible manhole covers in sequence from top to bottom, and is engaged with the lifting hole of each invisible manhole cover; The invisible manhole cover is moved to the location to be installed in sequence based on the moving parts, and the manual chain (10) of the hand chain hoist (9) is pulled to make the invisible manhole cover to be installed, which is indirectly connected to the hand chain hoist (9), rise or fall, thereby completing the installation.

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