Well lid lifter

Abstract

The utility model relates to the field of well lid lifting tools, and discloses a well lid lifter which comprises a jack mechanism, a lifting mechanism and a lifting mechanism. The supporting frame comprises a cross beam and a stand column connected to one end of the cross beam in a supporting mode, and the jack mechanism is connected to the other end of the cross beam in a supporting mode; and the well lid lifting hook assembly comprises a connecting rod and a well lid hook, the well lid hook is located at the lower end of the connecting rod, and the connecting rod is vertically connected to the cross beam, can be adjusted on the cross beam in an up-down lifting mode and can be transversely adjusted in the length direction of the cross beam. According to the well lid lifter, the mechanical structure design is simple, the well lid can be lifted by operating the jack mechanism, operation is convenient, and after the time for lifting the well lid is shortened, the quality problem that a crowbar is blackened and abraded due to long-time friction with the well lid is solved.

Description

Technical Field

[0001] The utility model relates to the field of manhole cover lifting tools, in particular to a manhole cover lifter. Background Art

[0002] During pipeline inspection and repair, it is usually necessary to lift the manhole cover for pipeline inspection and troubleshooting. Due to the special nature of the manhole cover (too heavy, small fulcrum), and laborious (difficult to lift), the following problems will arise when lifting it: 1. When using an ordinary crowbar to pry up the manhole cover, first insert it into the hole. Due to the laborious nature of the crowbar, it is difficult to lift the manhole cover by relying on the downward force of its own weight, and the lifting efficiency is low: The best way to lift the manhole cover currently found is to call a forklift, insert a crowbar between the two rods of the forklift, and use the rising force of the forklift to lift the manhole cover, which takes an average of 1 hour; but the manhole cover lifting time is long, the efficiency is low, and it wastes work time and energy consumption. 2. Quality hazards: The crowbar is easy to break. If the lifting process of the manhole cover is not smooth and the lifting time is extended (more than 1 hour), the friction between the crowbar and the manhole cover will easily generate heat, causing the manhole cover or crowbar to be scrapped and need to be purchased again, posing a major quality hazard; 3. Occupational health threat: There are flammable, explosive and harmful gases in the manhole cover. Static electricity and open flames may occur during the lifting process with a forklift, posing a serious threat to the life and health of the operator and increasing the difficulty of lifting the manhole cover.

[0003] Therefore, there is an urgent need for an adjustable bracket device for manhole cover lifting with a simple structure and reasonable design to ensure that the manhole cover is lifted in a time-saving and labor-saving manner and to improve construction efficiency. Utility Model Content

[0004] Based on this, the utility model provides a manhole cover lifter to solve the technical problems of the manhole cover lifter in the prior art that it does not save time and labor during lifting and has low efficiency.

[0005] To achieve the above object, the present invention provides a manhole cover lifter, which includes:

[0006] jack mechanism;

[0007] A support frame comprising a crossbeam and a column supported and connected to one end of the crossbeam, wherein the jack mechanism is supported and connected to the other end of the crossbeam;

[0008] The manhole cover lifting hook assembly includes a connecting rod and a manhole cover hook. The manhole cover hook is located at the lower end of the connecting rod. The connecting rod is vertically connected to the beam and can be adjusted up and down on the beam and laterally adjusted along the length of the beam.

[0009] As a further preferred technical solution of the present invention, the manhole cover hook is in an inverted "T" shape or an "L" shape.

[0010] As a further preferred technical solution of the present invention, the connecting rod and the manhole cover hook are detachably connected.

[0011] As a further preferred technical solution of the present invention, the lower portion of the connecting rod and the upper portion of the connecting rod are both hook-shaped.

[0012] As a further preferred technical solution of the present invention, a strip hole is opened on the crossbeam along its length direction for the connecting rod to pass vertically, and the connecting rod is adjusted laterally along the length direction of the crossbeam in the strip hole; the connecting rod is fixed to the crossbeam by a nut, and the connecting rod is provided with an external thread that cooperates with the nut, and a stop gasket is provided between the nut and the crossbeam.

[0013] As a further preferred technical solution of the present invention, the crossbeam and the upright column are integrally formed.

[0014] As a further preferred technical solution of the present invention, the jack mechanism includes a base, a support block, a jack adjusting screw and two support arms, the two support arms are arranged on both sides of the base opposite to each other, the support block is arranged above the base, the support arm includes an upper support arm, a lower support arm and a connecting block, the upper and lower ends of the upper support arm are hinged to the support block and the connecting block respectively, the upper and lower ends of the lower support arm are hinged to the connecting block and the base respectively, the jack adjusting screw passes horizontally through the two connecting blocks and is threadedly engaged with the connecting block; the jack mechanism is connected to the crossbeam through the support block.

[0015] As a further preferred technical solution of the present invention, a socket is radially opened at one end of the jack adjusting screw, and a handle is installed in the socket.

[0016] As a further preferred technical solution of the present invention, a connecting column is erected on the top surface of the support block, and a connecting hole is provided on the crossbeam, and the connecting column is plugged into and matched with the connecting hole.

[0017] The manhole cover lifter of the present utility model can achieve the following beneficial effects by adopting the above technical solution:

[0018] 1. The utility model adopts a lightweight design, and the manhole cover lifter can be placed on a trolley for light and quick movement. Compared with a forklift, it greatly improves the efficiency, energy consumption and safety of lifting the manhole cover.

[0019] 2. The mechanical structure of the utility model is simple in design. The manhole cover can be lifted by operating the jack mechanism. The operation is convenient and the time for lifting the manhole cover is shortened. The quality problem of the crowbar being blackened and worn due to long-term friction with the manhole cover is solved.

[0020] 3. The manhole cover lifter of this utility model can lift a manhole cover weighing about 30kg at a time, and the lifting time is controlled within 30 minutes, which greatly improves the work efficiency and the speed of inspecting the pipes inside the manhole cover. Compared with lifting the manhole cover by forklift, it can greatly shorten the time.

[0021] 4. The utility model adopts a fully mechanical operation, which solves the problem of static electricity and open flames that may occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0023] Figure 1 A schematic structural diagram of an embodiment of the manhole cover lifter provided by the utility model;

[0024] Figure 2 It is a structural diagram of the jack mechanism in the utility model.

[0025] In the figure: 1. Jack mechanism, 11. Base, 12. Support block, 13. Upper support arm, 14. Lower support arm, 15. Connecting block, 16. Jack adjusting screw, 17. Handle, 18. Connecting column, 2. Support frame, 21. Beam, 22. Column, 23. Strip hole, 24. Connecting hole, 3. Manhole cover lifting hook assembly, 31. Connecting rod, 32. Manhole cover hook, 33. Nut.

[0026] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Terms such as "upper," "lower," "left," "right," "center," and "one" used in the preferred embodiments are for ease of description and are not intended to limit the scope of the present invention. Changes or adjustments to these relative terms, without substantially altering the technical content, are also considered within the scope of the present invention.

[0028] like Figure 1 and 2 As shown, the utility model provides a manhole cover lifter, comprising:

[0029] The jack mechanism 1 includes a base 11, a support block 12, a jack adjustment screw 16, and two support arms. The two support arms are arranged on both sides of the base 11 in a left-right relative manner. The support block 12 is arranged above the base 11. The support arms include an upper support arm 13, a lower support arm 14, and a connecting block 15. The upper and lower ends of the upper support arm 13 are respectively hinged to the support block 12 and the connecting block 15. The upper and lower ends of the lower support arm 14 are respectively hinged to the connecting block 15 and the base 11. The jack adjustment screw 16 passes through the two connecting blocks 15 horizontally and is threadedly engaged with the connecting blocks 15.

[0030] The support frame 2 includes an integrally formed crossbeam 21 and a column 22. The column 22 is supported and connected to one end of the crossbeam 21. The jack mechanism 1 is supported and connected to the other end of the crossbeam 21 via a support block 12. A connecting column 18 is erected on the top surface of the support block 12. A connecting hole 24 is provided on the crossbeam 21. The connecting column 18 is plugged into the connecting hole 24. The raising and lowering of the jack mechanism 1 can adjust the raising and lowering of the crossbeam 21.

[0031] The manhole cover lifting hook assembly 3 includes a detachably connected connecting rod 31 and a manhole cover hook 32. The manhole cover hook 32 is located at the lower end of the connecting rod 31. The connecting rod 31 is vertically connected to the beam 21 and can be adjusted up and down on the beam 21 as well as laterally adjusted along the length direction of the beam 21. A strip hole 23 is provided on the beam 21 along its length direction for the connecting rod 31 to pass vertically. The connecting rod 31 is laterally adjusted along the length direction of the beam 21 in the strip hole 23. The connecting rod 31 is fixed to the beam 21 by a nut 33. The connecting rod 31 is provided with an external thread that cooperates with the nut 33. A stop gasket is provided between the nut 33 and the beam 21. The connecting rod 31 can be adjusted up and down by the nut 33.

[0032] The use process of the manhole cover lifter of the utility model is as follows:

[0033] First, the jack mechanism 1 and the support frame 2 are coordinated and erected on the ground around the shaft of the manhole cover, and the manhole cover lifting hook assembly 3 is suspended above the manhole cover; then, the manhole cover lifting hook assembly 3 is adjusted up and down and laterally along the length direction of the crossbeam 21, and the manhole cover hook 32 is inserted into the lifting hole of the manhole cover, and then rotated a certain angle (such as 90 degrees) to enable the manhole cover hook 32 to hook the manhole cover; finally, the jack mechanism 1 is started, and the handle 17 is installed in the socket at one end of the jack adjusting screw 16. The jack adjusting screw 16 is rotated by twisting the handle 17, so that the support block 12 moves upward or downward relative to the base 11, and the manhole cover can be lifted.

[0034] Preferably, the manhole cover hook 32 is in an inverted "T" shape or an "L" shape, and the manhole cover hook 32 is designed into different structures so that different types of manhole cover hooks 32 can be selected according to on-site requirements.

[0035] In a specific embodiment, the connecting rod 31 and the manhole cover hook 32 are detachably connected, and the lower part of the connecting rod 31 and the upper part of the connecting rod 31 are both hook-shaped, thereby facilitating the removal and placement of the manhole cover hook 32 and the insertion of the manhole cover hook 32 into the manhole cover lifting hole.

[0036] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are merely examples and that various changes or modifications may be made to the embodiments without departing from the principles and essence of the present invention. The scope of protection of the present invention is limited only by the appended claims.

Claims

1. A manhole cover lifter, characterized in that: include: jack mechanism; A support frame comprising a crossbeam and a column supported and connected to one end of the crossbeam, wherein the jack mechanism is supported and connected to the other end of the crossbeam; The manhole cover lifting hook assembly includes a connecting rod and a manhole cover hook. The manhole cover hook is located at the lower end of the connecting rod. The connecting rod is vertically connected to the beam and can be adjusted up and down on the beam and laterally adjusted along the length of the beam.

2. The manhole cover lifter according to claim 1, characterized in that: The manhole cover hook is in an inverted "T" shape or an "L" shape.

3. The manhole cover lifter according to claim 1, characterized in that: The connecting rod and the manhole cover hook are detachably connected.

4. The manhole cover lifter according to claim 3, characterized in that: The lower part of the connecting rod and the upper part of the connecting rod are both hook-shaped.

5. The manhole cover lifter according to claim 1, characterized in that: A strip hole is provided on the crossbeam along its length direction for the connecting rod to pass vertically, and the connecting rod is adjusted laterally along the length direction of the crossbeam in the strip hole; the connecting rod is fixed to the crossbeam by a nut, and the connecting rod is provided with an external thread that cooperates with the nut, and a stop gasket is provided between the nut and the crossbeam.

6. The manhole cover lifter according to claim 1, characterized in that: The cross beam is formed integrally with the upright column.

7. The manhole cover lifter according to any one of claims 1 to 6, characterized in that: The jack mechanism includes a base, a support block, a jack adjusting screw and two support arms, the two support arms are arranged on both sides of the base opposite to each other, the support block is arranged above the base, the support arms include an upper support arm, a lower support arm and a connecting block, the upper and lower ends of the upper support arm are hinged to the support block and the connecting block respectively, the upper and lower ends of the lower support arm are hinged to the connecting block and the base respectively, the jack adjusting screw passes horizontally through the two connecting blocks and is threadedly engaged with the connecting block; the jack mechanism is connected to the crossbeam through the support block.

8. The manhole cover lifter according to claim 7, characterized in that: One end of the jack adjusting screw rod is provided with a radially extending socket, and a handle is installed in the socket.

9. The manhole cover lifter according to claim 7, characterized in that: A connecting column is erected on the top surface of the support block, and a connecting hole is provided on the crossbeam. The connecting column is plugged into and matched with the connecting hole.

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