Well lid lifting device

Abstract

The utility model provides a manhole cover lifting device which comprises a fixing frame, an adjusting mechanism is jointly and movably connected between the left frame wall and the right frame wall of the fixing frame, cover lifting mechanisms are fixedly connected to the left portion and the right portion of the lower end of the adjusting mechanism, and electric telescopic columns are fixedly connected to the left portion and the right portion of the lower end of the fixing frame. Fixing plates are fixedly connected to the lower ends of the two electric telescopic columns, reinforcing plates are fixedly connected to the front portions and the rear portions of the upper ends of the two fixing plates, a control button is fixedly connected to the middle of the front end of the right fixing plate, and universal wheels are fixedly connected to the front portions and the rear portions of the lower ends of the two fixing plates. By arranging the adjusting mechanism, the cover lifting device can be suitable for well lids of different sizes, the well lids of different sizes can be lifted conveniently, and the application range of the cover lifting device is widened; according to the well lid lifting device, the well lid can be lifted together through the two lifting rods, the cover lifting effect can be enhanced, the bearing capacity can be enhanced through the two arranged lifting rods, and the service life of the lifting device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal manhole covers, in particular to a manhole cover lifting device. Background Art

[0002] There are many underground pipelines in urban construction, such as sewer pipes, underground gas pipes, tap water pipes, power pipes, communication pipes, national defense pipes, etc. There should be an outlet leading to the ground at regular intervals for these pipelines. The section from the pipeline to the ground is called a manhole. The manhole opening is usually flush with the ground. Therefore, a lid is needed to cover the manhole, which is called a manhole cover. A manhole cover lifting device will be used when lifting the manhole cover;

[0003] In the Chinese patent with the publication number CN211035149U, a lifting device for a municipal manhole cover is mentioned. The device drives the rotation of the first threaded rod through a motor, so that the first nut can move on the first threaded rod, so that the angles of the first movable rod and the second movable rod can be changed, so that the first movable rod can be inclined to contact the manhole cover, so that the manhole cover can be lifted. At the same time, the manhole cover can be lifted by the lifting device, so that the process of lifting the manhole cover can be realized; However, the lifting device only uses a single suspension rod to lift the manhole cover, resulting in a large bearing capacity of the suspension rod and easy damage, reducing the service life of the lifting device and also reducing the practicability of the lifting device. Therefore, we introduce a manhole cover lifting device. Summary of the Utility Model

[0004] In view of this, the utility model provides a manhole cover lifting device, aiming to solve the above problems to at least a certain extent.

[0005] The technical solution of the utility model is realized as follows:

[0006] A manhole cover lifting device includes a fixed frame. An adjusting mechanism is movably connected between the left frame wall and the right frame wall of the fixed frame. The left lower part and the right lower part of the adjusting mechanism are both fixedly connected with a cover lifting mechanism. The left lower part and the right lower part of the fixed frame are both fixedly connected with electric telescopic columns. The lower ends of the two electric telescopic columns are both fixedly connected with fixing plates. The front upper part and the rear upper part of the two fixing plates are both fixedly connected with reinforcing plates. The middle part of the front end of the right fixing plate is fixedly connected with a control button. The front lower part and the rear lower part of the two fixing plates are both fixedly connected with universal wheels.

[0007] As a further optional solution, the cover lifting mechanism includes a suspension rod. An electric push rod is fixedly inserted through the middle part of the lower end of the suspension rod. The output end of the electric push rod is fixedly connected with a pulling block. Two cover lifting frames are fixedly connected together between the upper end of the pulling block and the lower end of the suspension rod.

[0008] As a further optional scheme, the adjustment mechanism includes an adjusting screw, the middle part of the outer surface of the adjusting screw is movably connected with a stabilizing frame through a bearing, and the frame wall of the stabilizing frame is fixedly connected to the outer surface of the fixing frame, the left and right outer surfaces of the adjusting screw are threadedly connected with the adjusting frame, the lower ends of the two adjusting frames are fixedly connected with an adjustment plate, the middle part of the right end of the adjusting screw is fixedly connected with an adjusting crank, and the left and right outer surfaces of the adjusting screw are movably connected with the left and right frame walls of the fixing frame respectively through bearings.

[0009] As a further optional solution, the adjusting screw rod is configured as a forward and reverse spiral screw rod, the stabilizing frame is configured as a Japanese-shaped structure, and the connection method between the adjusting frame and the adjusting plate is configured as welding.

[0010] As a further optional solution, both electric telescopic columns are configured as a multi-stage telescopic structure, and both electric telescopic columns are electrically connected to the control button, and the reinforcement plate is configured as a triangular structure.

[0011] As a further optional scheme, the cover-lifting frame includes a first cover-lifting rod, the lower portion of the outer surface of the first cover-lifting rod is movably connected with a connecting seat through a movable shaft, and the lower end of the connecting seat is fixedly connected to the upper end of the pulling block, the upper portion of the outer surface of the first cover-lifting rod is movably connected with two second cover-lifting rods through a movable shaft, and the upper portions of the opposite surfaces of the two second cover-lifting rods are movably connected with a connecting block through a movable shaft, and the upper end of the connecting block is fixedly connected to the lower end of the suspension rod.

[0012] As a further optional solution, the connection between the suspension rod and the adjustment plate is set to be welding, the electric push rod is electrically connected to the control button, and the diameter length of the pulling block is smaller than the distance between the opposite surfaces of the two lid frames.

[0013] The beneficial effects of the utility model are:

[0014] 1. By setting an adjustment mechanism, the adjustment screw rod is driven to rotate by rotating the adjustment crank, so that the two adjustment frames drive the two suspension rods to move toward the middle, and the distance between the two cover-lifting mechanisms can be adjusted, so that the cover-lifting device can be used for manhole covers of different sizes, thereby facilitating the lifting of manhole covers of different sizes, and also expanding the application range of the cover-lifting device;

[0015] 2. By setting up a cover-lifting mechanism and a cover-lifting frame, the pulling block is pulled upward by the contraction of the electric push rod, so that the first cover-lifting rod and the second cover-lifting rod are folded up, and then the manhole cover can be lifted together through the two hanging rods, which can enhance the cover-lifting effect. The two hanging rods can enhance the bearing capacity and extend the service life of the lifting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of a manhole cover lifting device of the present invention;

[0018] Figure 2 It is a schematic diagram of the connection between the adjustment mechanism and the fixing frame of a manhole cover lifting device of the present invention;

[0019] Figure 3 It is a schematic diagram of the overall structure of the cover lifting mechanism of a manhole cover lifting device of the present invention;

[0020] Figure 4 It is a schematic diagram of the overall structure of the cover lifting frame of a manhole cover lifting device of the present invention.

[0021] In the figure: 1, fixing frame; 2, adjustment mechanism; 3, cover lifting mechanism; 4, electric telescopic column; 5, fixing plate; 6, reinforcement plate; 7, control button; 8, universal wheel; 21, adjustment screw rod; 22, stabilizing frame; 23, adjustment frame; 24, adjustment plate; 25, adjustment crank; 31, suspension rod; 32, electric push rod; 33, pulling block; 34, cover lifting frame; 341, first cover lifting rod; 342, connecting seat; 343, second cover lifting rod; 344, connecting block. Detailed implementation manners

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0024] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0026] Reference Figures 1-4 , an embodiment of the present application shows a manhole cover lifting device, including a fixed frame 1. An adjusting mechanism 2 is movably connected between the left frame wall and the right frame wall of the fixed frame 1. Both the left part and the right part of the lower end of the adjusting mechanism 2 are fixedly connected with a cover lifting mechanism 3. Both the left part and the right part of the lower end of the fixed frame 1 are fixedly connected with electric telescopic columns 4. The lower ends of the two electric telescopic columns 4 are both fixedly connected with a fixing plate 5. Reinforcing plates 6 are fixedly connected to both the front part and the rear part of the upper end of the two fixing plates 5. A control button 7 is fixedly connected to the middle part of the front end of the right fixing plate 5. Universal wheels 8 are fixedly connected to both the front part and the rear part of the lower end of the two fixing plates 5.

[0027] Furthermore, as Figure 1 and Figure 3 shown, the cover lifting mechanism 3 includes a suspension rod 31. An electric push rod 32 is inserted and fixedly connected to the middle part of the lower end of the suspension rod 31. The output end of the electric push rod 32 is fixedly connected with a pulling block 33. Two cover lifting frames 34 are fixedly connected together between the upper end of the pulling block 33 and the lower end of the suspension rod 31.

[0028] Furthermore, as Figure 1 and Figure 2As shown in the figure, the adjusting mechanism 2 includes an adjusting screw rod 21. The middle part of the outer surface of the adjusting screw rod 21 is movably connected through a bearing to a stabilizing frame 22, and the wall of the stabilizing frame 22 is fixedly connected to the outer surface of the fixed frame 1. Both the left part and the right part of the outer surface of the adjusting screw rod 21 are threadedly connected with adjusting frames 23. The lower ends of the two adjusting frames 23 are both fixedly connected with adjusting plates 24. The middle part of the right end of the adjusting screw rod 21 is fixedly connected with an adjusting crank 25. The left part and the right part of the outer surface of the adjusting screw rod 21 are respectively movably connected through bearings to the left wall and the right wall of the fixed frame 1.

[0029] Furthermore, the adjusting screw rod 21 is set as a positive and negative spiral screw rod, the stabilizing frame 22 is set as a structure in the shape of the Chinese character 'Ri', and the connection mode between the adjusting frame 23 and the adjusting plate 24 is set as welding.

[0030] Furthermore, as Figure 1 shown in the figure, both of the two electric telescopic columns 4 are set as multi-stage telescopic structures, and both of the two electric telescopic columns 4 are electrically connected to the control button 7. The reinforcing plate 6 is set as a triangular structure.

[0031] Furthermore, as Figure 3 and Figure 4 shown in the figure, the lid-lifting frame 34 includes a first lid-lifting rod 341. The lower part of the outer surface of the first lid-lifting rod 341 is movably connected through a movable shaft to a connecting seat 342, and the lower end of the connecting seat 342 is fixedly connected to the upper end of the pulling block 33. The upper part of the outer surface of the first lid-lifting rod 341 is movably connected through a movable shaft to two second lid-lifting rods 343. Between the upper parts of the opposite surfaces of the two second lid-lifting rods 343, they are jointly movably connected through a movable shaft to a connecting block 344, and the upper end of the connecting block 344 is fixedly connected to the lower end of the hanging rod 31.

[0032] Furthermore, the connection mode between the hanging rod 31 and the adjusting plate 24 is set as welding. The electric push rod 32 is electrically connected to the control button 7. The diameter length of the pulling block 33 is smaller than the distance between the opposite surfaces of the two lid-lifting frames 34.

[0033] When the manhole cover lifting device is applied, the entire lifting device is moved to the side of the manhole cover through the universal wheels 8, and then the brakes on the universal wheels 8 are locked. The distance between the two suspension rods 31 can be adjusted according to the size of the manhole cover to be lifted. By rotating the adjusting crank 25, the adjusting screw rod 21 can be driven to rotate, so that the two adjusting frames 23 drive the adjusting plates 24 thereon to move towards the middle respectively, and the distance between the two suspension rods 31 can be adjusted, making the two suspension rods 31 just above the through hole of the manhole cover, so that the manhole cover lifting device can be applied to manhole covers of different sizes, facilitating the lifting of manhole covers of different sizes and expanding the applicable range of the manhole cover lifting device. Then, the electric telescopic columns 4 are started by controlling the button 7. The two electric telescopic columns 4 contract to drive the fixed frame 1 to move downward, so that the pulling block 33 and the manhole cover lifting frame 34 are inserted into the through hole of the manhole cover. The electric push rod 32 can be started by controlling the button 7 to pull the pulling block 33 upward, so that the first manhole cover lifting rod 341 and the two second manhole cover lifting rods 343 are folded. The two folded convex parts can clamp the manhole cover. Finally, the electric telescopic columns 4 are extended by controlling the button 7, so that the fixed frame 1 drives the two suspension rods 31 to move upward, and the manhole cover can be lifted through the folded manhole cover lifting frame 34. By operating the manhole cover lifting with the two suspension rods 31 together, the bearing capacity of the suspension rods 31 can be enhanced, and the service life of the lifting device can be extended, thus enhancing the lifting effect of the manhole cover and improving the practicality of the lifting device.

[0034] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A manhole cover lifting device, characterized in that: The utility model comprises a fixing frame, wherein the left frame wall and the right frame wall of the fixing frame are movably connected with an adjusting mechanism, the lower left part and the lower right part of the adjusting mechanism are fixedly connected with a lid-lifting mechanism, the lower left part and the lower right part of the fixing frame are fixedly connected with an electric telescopic column, the lower ends of the two electric telescopic columns are fixedly connected with a fixing plate, the upper front parts and the upper rear parts of the two fixing plates are fixedly connected with a reinforcement plate, the front middle part of the right fixing plate is fixedly connected with a control button, and the lower front parts and the lower rear parts of the two fixing plates are fixedly connected with universal wheels.

2. A manhole cover lifting device according to claim 1, characterized in that: The cover-lifting mechanism comprises a suspension rod, an electric push rod is inserted and fixedly connected to the middle of the lower end of the suspension rod, a pulling block is fixedly connected to the output end of the electric push rod, and two cover-lifting frames are fixedly connected between the upper end of the pulling block and the lower end of the suspension rod.

3. A manhole cover lifting device according to claim 1, characterized in that: The adjusting mechanism includes an adjusting screw rod, the middle part of the outer surface of the adjusting screw rod is movably connected with a stabilizing frame through a bearing, and the frame wall of the stabilizing frame is fixedly connected to the outer surface of the fixing frame, the left and right parts of the outer surface of the adjusting screw rod are threadedly connected with the adjusting frame, the lower ends of the two adjusting frames are fixedly connected with an adjusting plate, the middle part of the right end of the adjusting screw rod is fixedly connected with an adjusting crank, and the left and right parts of the outer surface of the adjusting screw rod are movably connected with the left and right frame walls of the fixing frame respectively through bearings.

4. A manhole cover lifting device according to claim 3, characterized in that: The adjusting screw rod is configured as a forward and reverse spiral screw rod, the stabilizing frame is configured as a Japanese-shaped structure, and the connection method between the adjusting frame and the adjusting plate is configured as welding.

5. A manhole cover lifting device according to claim 1, characterized in that: Both electric telescopic columns are configured as a multi-stage telescopic structure, and both electric telescopic columns are electrically connected to the control button, and the reinforcement plate is configured as a triangular structure.

6. A manhole cover lifting device according to claim 2, characterized in that: The cover-lifting frame includes a first cover-lifting rod, a connecting seat is movably connected to the lower part of the outer surface of the first cover-lifting rod through a movable shaft, and the lower end of the connecting seat is fixedly connected to the upper end of the pulling block, and two second cover-lifting rods are movably connected to the upper part of the outer surface of the first cover-lifting rod through a movable shaft, and a connecting block is movably connected to the upper parts of the opposite surfaces of the two second cover-lifting rods through a movable shaft, and the upper end of the connecting block is fixedly connected to the lower end of the suspension rod.

7. A manhole cover lifting device according to claim 6, characterized in that: The connection mode between the suspension rod and the adjustment plate is set to be welding, the electric push rod is electrically connected to the control button, and the diameter length of the pulling block is smaller than the distance between the opposite surfaces of the two cover frames.

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