Well lid replacement device and method

Abstract

The invention provides a well lid replacement device and method, and belongs to the technical field of well lid replacement. The device comprises a movable supporting frame, a hoisting mechanism and a rotary connecting piece; the movable supporting frame comprises a bottom plate, a movable structure arranged at the bottom of the bottom plate, stand columns symmetrically and fixedly arranged on the two sides of the top face of the bottom plate, and a transverse rod with the two ends rotatably connected between the upper portions of the two stand columns. The hoisting mechanism comprises a hoisting rod erected at the top of the cross rod and a triangular hoisting frame arranged at one end of the hoisting rod; a lifting hook matched with a lifting hole of the well lid is arranged on a lower transverse frame of the triangular lifting frame; the rotary connecting piece comprises a first buckle, a second buckle and a rotating piece connected between the first buckle and the second buckle. The periphery of the cross rod is sleeved with the first buckle; the rod body of the lifting rod is sleeved with the second buckle. The problems that in the prior art, when a crowbar is used for prizing up a well lid, the well lid and a well ring are prone to being damaged, manual carrying is difficult, the safety coefficient is low, and the well lid replacement efficiency is low can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of manhole cover replacement, and more specifically, to a manhole cover replacement device and method. Background Art

[0002] Most heavy manhole covers are difficult to replace. Generally, they need to be pried open with a crowbar and then manually carried and replaced.

[0003] The above-mentioned existing method for replacing heavy manhole covers has the following problems: when using a crowbar to pry open the manhole cover, the manhole cover and the manhole ring are easily damaged, manual handling is difficult and the safety factor is low, and the manhole cover replacement efficiency is low. Summary of the Invention

[0004] In view of the above problems, the purpose of the present invention is to provide a manhole cover replacement device and method to solve the problems in the existing technology of the existing heavy manhole cover replacement method, which is easy to damage the manhole cover and the manhole ring when using a crowbar to pry open the manhole cover, difficult manual handling and low safety factor, and low efficiency of manhole cover replacement.

[0005] The present invention provides a manhole cover replacement device, comprising a movable support frame, a lifting mechanism and a rotary connector; wherein,

[0006] The movable support frame includes a bottom plate, a movable structure arranged at the bottom of the bottom plate, columns symmetrically fixed on both sides of the top surface of the bottom plate, and a crossbar with two ends rotatably connected between the upper parts of the two columns;

[0007] The lifting mechanism includes a lifting rod set on the top of the cross bar and a triangular hanger set at one end of the lifting rod; the vertex of the triangular hanger is connected to the lifting rod, and a hook is provided on the lower cross frame of the triangular hanger to match the reserved extraction hole on the manhole cover;

[0008] The rotary connector includes a first buckle, a second buckle and a rotating member connected between the first buckle and the second buckle; the first buckle is sleeved on the outer periphery of the cross bar; and the second buckle is sleeved on the rod body of the lifting rod.

[0009] In addition, a preferred solution is that the base plate is a steel plate structure; the columns are steel structure columns; and the columns are welded to the base plate.

[0010] In addition, a preferred solution is that a bearing fixing hole is provided on the upper portion of the column; a bearing is provided in the bearing fixing hole; and the end of the cross bar is connected to the bearing.

[0011] In addition, a preferred solution is that the moving structure is a moving wheel.

[0012] In addition, a preferred solution is that a vertical through hole is provided on the lower horizontal frame of the triangular hanger; the hook includes a vertical rod rotatably arranged in the vertical through hole, a horizontal stop block vertically fixed to the top of the vertical rod and a hook body arranged at the bottom end of the vertical rod; the horizontal stop block is arranged at the upper part of the vertical through hole; and the hook body is arranged at the lower part of the vertical through hole.

[0013] In addition, a preferred solution is that flexible pads are provided at both the upper and lower parts of the vertical through hole.

[0014] In addition, a preferred solution is that the number of the vertical through holes is two; and the hook is provided in each of the vertical through holes.

[0015] In addition, a preferred solution is that the first clip and the second clip have the same structure, both including a base, an arc-shaped clip and a fixing bolt, wherein:

[0016] An arc-shaped clamping cavity is provided on the seat surface of the base, and a hinge point and a bolt hole are respectively provided on the seat surface of the base, and the hinge point and the bolt hole are respectively provided at two ends of the arc-shaped clamping cavity;

[0017] The arc-shaped opening of the arc-shaped clamping member is docked with the opening of the arc-shaped clamping cavity, one end of the arc-shaped clamping member is hinged to the hinge point of the base, and a connecting piece is provided at the other end of the arc-shaped clamping member;

[0018] The connecting piece is provided with a through hole corresponding to the position of the bolt hole;

[0019] The fixing bolt is connected to the through hole of the connecting piece and the bolt hole.

[0020] In addition, a preferred solution is that the rotating member includes a first rotating bearing arranged outside the base of the first buckle, a second rotating bearing arranged outside the base of the second buckle, and a rotating shaft connected between the first rotating bearing and the second rotating bearing.

[0021] The present invention also provides a method for replacing a manhole cover, which uses the manhole cover replacement device as described above to replace the manhole cover, comprising the following steps:

[0022] Step S1, fixing the hook on the reserved extraction hole of the old manhole cover;

[0023] Step S2: by pressing down the operating end of the lifting rod, using the point where the cross bar contacts the lifting rod as a support point, lifting the old manhole cover, and transporting the lifted old manhole cover to above the old manhole cover placement position by the mobile structure;

[0024] Step S3, removing the downward pressure applied to the operating end of the lifting rod, placing the old manhole cover on the old manhole cover placement position, and removing the hook from the old manhole cover;

[0025] Step S4, fixing the hook to the reserved extraction hole of the new manhole cover;

[0026] Step S5: By pressing down the operating end of the lifting rod, the point where the cross bar contacts the lifting rod is used as a support point to lift the new manhole cover, and the lifted new manhole cover is moved to the wellhead by the movable structure and placed on the wellhead, and the hook is removed from the new manhole cover to complete the replacement of the manhole cover.

[0027] It can be seen from the above technical solutions that the manhole cover replacement device and method provided by the present invention can be flexibly moved and used according to the location requirements of the manhole cover replacement and the storage location of the new and old manhole covers through the structural design of the movable support frame, lifting mechanism and rotating connector; the lifting mechanism and the movable support frame are connected by a rotating connector, and the operating angle is flexible; by pressing down the operating end of the lifting rod, the manhole cover is lifted with the help of the fulcrum of the lifting rod at the top of the cross bar, and the lever principle is used, which is more labor-saving, and the manhole cover is lifted from above by using a hook without damaging the manhole cover and the manhole ring; after the old and new manhole covers are lifted, after the operating end of the lifting rod is fixed in position, they are moved to the designated point by using the movable structure and lowered. The entire process does not require manual handling of the manhole covers, which saves manpower, has a high safety factor, and greatly improves the replacement efficiency.

[0028] In order to achieve the above and related purposes, one or more aspects of the present invention include the features that will be described in detail later. The following description and the accompanying drawings describe some exemplary aspects of the present invention in detail. However, these aspects indicate only some of the various ways in which the principles of the present invention can be used. In addition, the present invention is intended to include all of these aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] By referring to the following description in conjunction with the accompanying drawings, and with a more complete understanding of the present invention, other objects and results of the present invention will become more clear and easy to understand. In the accompanying drawings:

[0030] Figure 1 2. A schematic side structural diagram of a manhole cover replacement device according to an embodiment of the present invention;

[0031] Figure 2 2. A schematic diagram of a top view of a manhole cover replacement device according to an embodiment of the present invention;

[0032] Figure 3 is a schematic side structural diagram of a movable support frame according to an embodiment of the present invention;

[0033] Figure 4is a structural schematic diagram of a rotary connector according to an embodiment of the present invention;

[0034] Figure 5 is a structural schematic diagram of a hook according to an embodiment of the present invention;

[0035] Figure 6 Flowchart of a manhole cover replacement method according to an embodiment of the present invention.

[0036] In the accompanying drawings, 11-base plate, 12-movable structure, 13-column, 14-cross bar, 15-bearing, 21-lifting rod, 22-triangular hanger, 221-lower cross frame, 23-hook, 231-vertical rod, 232-cross block, 233-hook body, 24-flexible pad, 3-rotating connector, 31-base, 311-arc-shaped clamping cavity, 32-arc-shaped clamp, 321-connecting plate, 33-fixing bolt, 34-rotating part, 4-manhole cover.

[0037] The same reference numerals throughout the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0038] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. However, it will be apparent that these embodiments may be practiced without these specific details.

[0039] In view of the above-mentioned prior art, the existing method for replacing heavy manhole covers has the problems of easily damaging the manhole cover and the manhole ring when using a crowbar to pry open the manhole cover, difficulty in manual handling and low safety factor, and low efficiency of manhole cover replacement. A manhole cover replacement device and method are proposed.

[0040] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0041] In order to illustrate the manhole cover replacement device and method provided by the present invention, Figure 1 It shows the side structure of the manhole cover replacement device according to an embodiment of the present invention; Figure 2 The top view of the manhole cover replacement device according to an embodiment of the present invention is shown; Figure 3 shows the side structure of a movable support frame according to an embodiment of the present invention; Figure 4 The structure of a rotary connector according to an embodiment of the present invention is shown; Figure 5 The structure of the hook according to the embodiment of the present invention is shown; Figure 6 The flowchart of replacing a manhole cover according to an embodiment of the present invention is shown.

[0042] like Figures 1 to 5As shown together, the manhole cover replacement device provided by the present invention includes a movable support frame, a lifting mechanism and a rotating connecting member 3; wherein,

[0043] The mobile support frame includes a base plate 11, a mobile structure 12 arranged at the bottom of the base plate 11, columns 13 symmetrically fixed on both sides of the top surface of the base plate 11, and a crossbar 14 rotatably connected at both ends between the upper parts of the two columns 13;

[0044] The lifting mechanism includes a lifting rod 21 mounted on the top of the crossbar 14 and a triangular hanger 22 provided at one end of the lifting rod 21; the vertex of the triangular hanger 22 is connected to the lifting rod 21, and a hook 23 is provided on the lower crossbar 221 of the triangular hanger 22 to fit into the reserved extraction hole on the manhole cover;

[0045] The rotary connector 3 includes a first buckle, a second buckle and a rotating member 34 connected between the first buckle and the second buckle; the first buckle is sleeved on the outer periphery of the crossbar 14; the second buckle is sleeved on the rod body of the lifting rod 21.

[0046] Through the structural design of the movable support frame, lifting mechanism and rotating connector 3, it can be flexibly moved and used according to the location requirements of the replacement of the manhole cover and the storage location of the new and old manhole covers; the lifting mechanism and the movable support frame are connected by a rotating connector 3, and the operating angle is flexible; by pressing down the operating end of the lifting rod 21, the manhole cover 4 is lifted with the help of the fulcrum of the lifting rod 21 at the top of the cross bar 14, and the lever principle is used, which is more labor-saving, and the manhole cover 4 is lifted from above by using the hook 23 without damaging the manhole cover 4 and the manhole ring; after the old and new manhole covers are lifted, after the operating end of the lifting rod 21 is fixed in position, the mobile structure 12 is used to move them to the designated point and lower them. The entire process does not require manual handling of the manhole covers, which saves manpower, has a high safety factor, and greatly improves the replacement efficiency.

[0047] As a preferred solution of the present invention, the base plate 11 is a steel plate structure; the columns 13 are steel structure columns; and the columns 13 are welded to the base plate 11 .

[0048] Specifically, the base plate 11 is preferably but not limited to a steel plate structure, and the column 13 is preferably but not limited to a steel structure column. The column 13 is fixed to the base plate 11 by welding, so that the overall structure of the mobile support frame is more solid and the support for the lifting rod 21 is more stable.

[0049] As a preferred solution of the present invention, a bearing fixing hole is provided on the upper portion of the column 11 ; a bearing 15 is provided in the bearing fixing hole; and the end of the crossbar 14 is connected to the bearing 15 .

[0050] Specifically, both ends of the cross bar 14 are connected between the two columns 11 through bearings, so that the rod body of the cross bar 14 can rotate, and the lifting rod 21 can adjust its direction up and down along the support point provided by the cross bar 14 to complete the lifting and lowering of the manhole cover 4.

[0051] As a preferred solution of the present invention, the moving structure 12 is a moving wheel.

[0052] It should be noted that the movable structure 12 is preferably but not limited to a movable wheel, and can also be replaced by a guide rail or other structure. For example, a guide rail is laid between the new and old manhole cover placement points and the wellhead position, and the movable structure 12 is a slider adapted to the guide rail.

[0053] As a preferred solution of the present invention, a vertical through hole is provided on the lower horizontal frame 221 of the triangular hanger 22;

[0054] The hook 23 includes a vertical rod 231 rotatably disposed in a vertical through hole, a horizontal stopper 232 vertically fixed to the top of the vertical rod 231 , and a hook body 233 disposed at the bottom end of the vertical rod 231 ;

[0055] The horizontal stopper 232 is provided at the upper portion of the vertical through hole;

[0056] The hook body 233 is disposed at the lower portion of the vertical through hole.

[0057] Specifically, the vertical rod 231 can rotate in the vertical through hole, so as to facilitate adjustment of the direction of the hook body 233 and provide more flexible application.

[0058] As a preferred solution of the present invention, flexible pads 24 are provided at both the upper and lower parts of the vertical through hole.

[0059] By providing the flexible pad, wear of the hook 23 is avoided.

[0060] As a preferred solution of the present invention, there are two vertical through holes; a hook 23 is provided in each vertical through hole.

[0061] Specifically, the manhole cover generally has two preset extraction holes, and two hooks 23 are provided to ensure that the manhole cover 4 is horizontal when it is lifted, making the lifting more stable.

[0062] As a preferred solution of the present invention, the first clip and the second clip have the same structure, both including a base 31, an arc-shaped clip 32 and a fixing bolt 33, wherein:

[0063] A circular arc-shaped clamping cavity 311 is provided on the seat surface of the base 31, and a hinge point and a bolt hole are provided on the seat surface of the base 31. The hinge point and the bolt hole are respectively provided at both ends of the circular arc-shaped clamping cavity 311;

[0064] The arc opening of the arc-shaped clamping member 32 is connected to the opening of the arc-shaped clamping cavity 311. One end of the arc-shaped clamping member 32 is hinged to the hinge point of the base 31, and a connecting piece 321 is provided at the other end of the arc-shaped clamping member 32.

[0065] The connecting piece 321 is provided with a through hole corresponding to the position of the bolt hole;

[0066] The fixing bolt 33 is connected to the through hole and the bolt hole of the connecting piece 321 .

[0067] As a preferred embodiment of the present invention, the rotating member 34 includes a first rotating bearing arranged outside the base 31 of the first buckle, a second rotating bearing arranged outside the base 31 of the second buckle, and a rotating shaft connected between the first rotating bearing and the second rotating bearing.

[0068] It should be noted that the above-mentioned rotating member 34 is a preferred structure and can be replaced by other connecting members that can enable the first buckle and the second buckle to rotate flexibly relative to each other. The present invention does not make any special limitation on this.

[0069] like Figure 6 As shown, the manhole cover replacement method provided by the present invention uses the manhole cover replacement device provided by the present invention as described above to replace the manhole cover, including the following steps:

[0070] Step S1, fixing the hook 23 on the reserved extraction hole of the old manhole cover;

[0071] Step S2: Press down the operating end of the lifting rod 21, use the point where the cross bar 14 contacts the lifting rod 21 as a support point, lift the old manhole cover, and transport the lifted old manhole cover to above the old manhole cover placement position through the mobile structure 12;

[0072] Step S3: remove the downward pressure applied to the operating end of the lifting rod 21, place the old manhole cover in the old manhole cover placement position, and remove the hook 23 from the old manhole cover;

[0073] Step S4: Fix the hook 23 to the reserved extraction hole of the new manhole cover;

[0074] Step S5: Press down the operating end of the lifting rod 21, use the point where the cross bar 14 contacts the lifting rod 21 as a support point, lift the new manhole cover, and move the lifted new manhole cover to the wellhead through the movable structure 12 and place it on the wellhead. Remove the hook 23 from the new manhole cover to complete the replacement of the manhole cover.

[0075] It can be seen from the above specific embodiments that the manhole cover replacement device and method provided by the present invention can be flexibly moved and used according to the location requirements of the manhole cover replacement and the storage location of the new and old manhole covers through the structural design of the movable support frame, lifting mechanism and rotating connector; the lifting mechanism and the movable support frame are connected by a rotating connector, and the operating angle is flexible; by pressing down the operating end of the lifting rod, the manhole cover is lifted with the help of the fulcrum of the lifting rod at the top of the cross bar, and the lever principle is used, which is more labor-saving, and the manhole cover and the manhole ring are lifted by the hook; after the old and new manhole covers are lifted, after the operating end of the lifting rod is fixed in position, they are moved to the designated point by the mobile structure and lowered. The entire process does not require manual handling of the manhole cover, which saves manpower, has a high safety factor, and greatly improves the replacement efficiency.

[0076] The above description of the manhole cover replacement device and method according to the present invention is based on exemplary embodiments and is described with reference to the accompanying drawings. However, those skilled in the art will appreciate that various modifications may be made to the manhole cover replacement device and method without departing from the scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A manhole cover replacement device, characterized in that: It includes a movable support frame, a lifting mechanism and a rotating connecting piece; wherein, The movable support frame comprises a bottom plate, a movable structure arranged at the bottom of the bottom plate, columns symmetrically fixed on both sides of the top surface of the bottom plate, and a crossbar rotatably connected at both ends between the upper parts of the two columns; The lifting mechanism comprises a lifting rod set on the top of the cross bar and a triangular hanger arranged at one end of the lifting rod; the vertex of the triangular hanger is connected to the lifting rod, and a hook matching the reserved extraction hole on the manhole cover is arranged on the lower cross frame of the triangular hanger; The rotary connector includes a first buckle, a second buckle and a rotating member connected between the first buckle and the second buckle; the first buckle is sleeved on the outer periphery of the cross bar; and the second buckle is sleeved on the rod body of the lifting rod.

2. The manhole cover replacement device according to claim 1, characterized in that: The bottom plate is a steel plate structure; The columns are steel structure columns; The upright posts are welded to the bottom plate.

3. The manhole cover replacement device according to claim 1, characterized in that: A bearing fixing hole is provided on the upper part of the column; A bearing is arranged in the bearing fixing hole; The end of the cross bar is connected to the bearing.

4. The manhole cover replacement device according to claim 1, characterized in that: The moving structure is a moving wheel.

5. The manhole cover replacement device according to claim 1, characterized in that: A vertical through hole is provided on the lower horizontal frame of the triangular hanger; The hook comprises a vertical rod rotatably arranged in the vertical through hole, a transverse stopper vertically fixed to the top of the vertical rod, and a hook body arranged at the bottom end of the vertical rod; The transverse stopper is arranged at the upper part of the vertical through hole; The hook body is arranged at the lower part of the vertical through hole.

6. The manhole cover replacement device according to claim 5, characterized in that: Flexible pads are arranged on the upper and lower parts of the vertical through hole.

7. The manhole cover replacement device according to claim 5, characterized in that: The number of the vertical through holes is two; The hook is arranged in each of the vertical through holes.

8. The manhole cover replacement device according to claim 1, characterized in that: The first buckle and the second buckle have the same structure, both comprising a base, an arc-shaped clamp and a fixing bolt, wherein: A circular arc-shaped clamping cavity is arranged on the seat surface of the base, and a hinge point and a bolt hole are respectively arranged on the seat surface of the base, and the hinge point and the bolt hole are respectively arranged at two ends of the circular arc-shaped clamping cavity; The arc-shaped opening of the arc-shaped clamping member is butted against the opening of the arc-shaped clamping cavity, one end of the arc-shaped clamping member is hinged at the hinge point of the base, and a connecting piece is provided at the other end of the arc-shaped clamping member; The connecting plate is provided with a through hole corresponding to the position of the bolt hole; The fixing bolt is connected in the through hole of the connecting piece and the bolt hole.

9. The manhole cover replacement device according to claim 8, characterized in that: The rotating member includes a first rotating bearing arranged outside the base of the first buckle, a second rotating bearing arranged outside the base of the second buckle, and a rotating shaft connected between the first rotating bearing and the second rotating bearing.

10. A method for replacing a manhole cover, characterized in that: Using the manhole cover replacement device as described in any one of claims 1 to 9 to replace the manhole cover comprises the following steps: Step S1, fixing the hook on the reserved extraction hole of the old manhole cover; Step S2, by pressing down the operating end of the lifting rod, using the point where the cross bar contacts the lifting rod as a supporting point, lifting the old manhole cover, and transporting the lifted old manhole cover to above the old manhole cover placement position through the mobile structure; Step S3, removing the downward pressure applied to the operating end of the lifting rod, placing the old manhole cover on the old manhole cover placement position, and removing the hook from the old manhole cover; Step S4, fixing the hook on the reserved extraction hole of the new manhole cover; Step S5, by pressing down the operating end of the lifting rod, using the point where the cross bar contacts the lifting rod as a supporting point, lifting the new manhole cover, and moving the lifted new manhole cover to the wellhead through the movable structure and placing it on the wellhead, removing the hook from the new manhole cover, and completing the replacement of the manhole cover.

Images