A device for facilitating lifting and placing of a concrete cover plate

Abstract

The utility model discloses a device for lifting and placing concrete cover plate conveniently, which aims at solving the problem of time-consuming, laborious and potential safety hazard caused by using crowbar to lift the cover plate. The device comprises a hoisting assembly and a lifting assembly. The hoisting assembly comprises cross steel wire ropes and L-shaped reinforcing hooks. The lifting assembly has an adjustable force arm lifting rod, the pivot position of which is adjustable, and a hook connected with the steel wire rope at one end. The device also comprises a support vehicle. The lifting rod is slidable and rotatable, and the hook has a locking structure. The device is labor-saving and efficient, can stably lift and place the cover plate, is suitable for various scenes, and improves the safety and convenience.

Description

Technical Field

[0001] This utility model relates to the field of concrete cover plate construction technology, and in particular to a device for facilitating the lifting and placing of concrete cover plates. Background Technology

[0002] During the electrical renovation of tunnels or power distribution rooms, removing cable trench covers to replace wires and cables is an important construction task. Currently, cable trench covers are generally I-shaped concrete covers, which are quite heavy, and adjacent covers are often tightly fitted together, making it difficult to lift them manually. During construction, a pry bar is often used to lift one end to achieve the purpose of lifting the cover. However, lifting the cover with a pry bar is time-consuming and laborious, and there is a risk of the cover slipping and injuring people. Summary of the Invention

[0003] The technical problem this invention aims to solve is that manually using a crowbar to lift the cover is not only time-consuming and laborious, but also poses safety hazards.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a device for facilitating the lifting and placement of concrete cover plates, including a hoisting assembly and a lifting assembly for the concrete cover plate. The hoisting assembly includes a steel wire rope and an L-shaped steel hook connected to the end of the steel wire rope. The hoisting assembly includes no less than two steel wire ropes, which are arranged crosswise and fixedly connected in the middle. The lifting assembly includes an adjustable lever arm, the pivot position of which is adjustable along the axial direction of the adjustable lever arm. One end of the adjustable lever arm is provided with a hook for connecting the steel wire rope.

[0005] Preferably, the lifting assembly further includes a support vehicle, on the top of which a rotating cylinder is horizontally rotatably mounted. The adjustable lever is axially slidably connected inside the rotating cylinder, and the adjustable lever is connected inside the rotating cylinder via a pin.

[0006] Preferably, the adjustable lever arm has pin holes for inserting the pins, and the pin holes are equidistantly distributed along the axial direction of the adjustable lever arm.

[0007] Preferably, a support pipe is vertically fixed to the top of the support vehicle, and the rotating cylinder is horizontally rotatably connected between the two support pipes.

[0008] Preferably, a rubber handle is fixedly fitted to the end of the adjustable lever away from the hook.

[0009] Preferably, a locking ball is fixedly connected to the end of the wire rope, a threaded disc is slidably fitted on the wire rope, an external thread is provided on the outer side wall of the threaded disc, an internal thread adapted to the threaded disc is provided at the top of the L-shaped rebar hook, the outer diameter of the locking ball is larger than the diameter of the wire rope, and the locking ball is located inside the L-shaped rebar hook.

[0010] Preferably, the end wall of the threaded disc is provided with cross-shaped ribs.

[0011] Preferably, the L-shaped rebar hook includes a horizontal section and a vertical section, and a locking nut for pressing the concrete cover plate onto the horizontal section is threaded onto the vertical section of the L-shaped rebar hook.

[0012] Preferably, a locking plate is slidably connected to the vertical section, and the locking plate is located below the locking nut.

[0013] Preferably, the top surface of the horizontal segment is provided with friction texture.

[0014] This utility model provides a device for easily lifting and placing concrete cover plates, which has the following beneficial effects.

[0015] 1. With the design of adjustable lever arm lifting rod, the position of its pivot axis can be adjusted axially, and the lever arm length can be flexibly adjusted according to the weight of the cover plate. By utilizing the lever principle, the lifting force required is greatly reduced. Compared with traditional crowbar operation, it is more labor-saving and effectively solves the problem of time-consuming and laborious manual lifting of heavy concrete cover plates, thus improving construction efficiency.

[0016] 2. The hoisting assembly uses multiple crisscrossed steel wire ropes and L-shaped steel hooks to stably hook the cover plate; the locking nuts and locking plates on the L-shaped steel hooks can press and fix the cover plate, and the friction texture of the horizontal section enhances the anti-slip effect, preventing the cover plate from slipping and injuring people during lifting and lowering, and overcoming the safety risk of the cover plate easily falling off in the traditional pry bar operation.

[0017] 3. The lifting arm is slidably connected to the rotating cylinder, and the extension length of the lifting arm can be adjusted by a pin to adapt to the lifting and placing needs of different sized covers; the rotating cylinder on the top of the support vehicle can rotate horizontally, allowing the lifting arm to be flexibly adjusted at the working angle, which is convenient for operation in narrow spaces such as tunnels and power distribution rooms, and improves the applicability of the device. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a schematic diagram of the support vehicle in an embodiment of the present utility model.

[0020] Figure 2 This is a schematic diagram of the lockable hook in an embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the adjustable lever arm lifting rod in an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the internal structure of the L-shaped steel bar hook in an embodiment of this utility model.

[0023] In the diagram: 1. Wire rope; 2. L-shaped rebar hook; 3. Locking nut; 4. Locking plate; 5. Concrete cover plate; 6. Adjustable lever arm; 7. Pin; 8. Pin hole; 9. Hook. Detailed Implementation

[0024] like Figure 1-3 As shown, this utility model provides a device for easily lifting and placing concrete cover plates, including a hoisting assembly and a lifting assembly for the concrete cover plate. The hoisting assembly includes a steel wire rope 1 and an L-shaped steel hook 2 connected to the end of the steel wire rope 1. The hoisting assembly includes no less than two steel wire ropes 1, which are arranged crosswise and fixedly connected in the middle. The lifting assembly includes an adjustable lever arm 6. The pivot position of the adjustable lever arm 6 is adjustable along the axial direction of the adjustable lever arm 6. One end of the adjustable lever arm 6 is provided with a hook 9 for connecting the steel wire rope 1.

[0025] By connecting four L-shaped steel bar hooks 2 at the ends of two steel wire ropes 1 to the bottom of the concrete cover plate 5, and connecting two L-shaped steel bar hooks 2 to the two ends of the concrete cover plate 5 respectively, the concrete cover plate 5 is effectively supported. The two steel wire ropes 1 are connected by hooks 9, and the hooks 9 work with the L-shaped steel bar hooks 2 to lift the concrete cover plate 5. Then, the concrete cover plate 5 is lifted manually by levering the adjustable lever arm lifting rod 6.

[0026] like Figure 1 and Figure 3 As shown. The lifting assembly also includes a support vehicle, on the top of which a rotating cylinder is horizontally rotatable. The adjustable lever arm 6 is axially slidably connected inside the rotating cylinder, and the adjustable lever arm 6 is connected inside the rotating cylinder via a pin 7. By inserting the adjustable lever arm 6 into the rotating cylinder, the rotating cylinder provides rotational support for the adjustable lever arm 6. The lever arm of the adjustable lever arm 6 is adjusted by sliding it axially along the inside of the rotating cylinder.

[0027] like Figure 3 As shown. The adjustable lever arm 6 has pin holes 8 for inserting the pins 7. The pin holes 8 are evenly distributed along the axial direction of the adjustable lever arm 6. The evenly distributed pin holes 8 can adjust the position of the adjustable lever arm 6 inside the rotating cylinder, adjust the lever arm for lifting the concrete cover plate, and facilitate the workers to lift the concrete cover plate.

[0028] like Figure 1 As shown. A support tube is vertically fixed to the top of the support vehicle, and the rotating cylinder is horizontally rotatably connected between two support tubes. A hinge shaft is provided between the two support tubes, and the rotating cylinder is rotatably connected to the hinge shaft to achieve rotational support for the rotating cylinder.

[0029] In a preferred embodiment of this utility model, a rubber handle is fixedly fitted to the end of the adjustable lever arm 6 away from the hook 9. By providing a rubber handle at the end of the adjustable lever arm 6, it facilitates the worker's gripping of the adjustable lever arm 6.

[0030] like Figure 4 As shown. A locking ball is fixedly connected to the end of the wire rope 1. A threaded disc is slidably fitted onto the wire rope 1, and external threads are provided on the outer wall of the threaded disc. The top of the L-shaped rebar hook 2 is provided with internal threads that are adapted to the threaded disc. The outer diameter of the locking ball is larger than the diameter of the wire rope 1, and the locking ball is located inside the L-shaped rebar hook 2. By welding the locking ball to the end of the wire rope 1, when fixing the wire rope 1 and the L-shaped rebar hook 2, the locking ball is placed inside the L-shaped rebar hook 2, and the threaded disc is screwed into the top of the L-shaped rebar hook 2. The locking ball limits the connection, thus achieving the fixed connection between the wire rope 1 and the L-shaped rebar hook 2.

[0031] In a preferred embodiment of this utility model, to improve the strength of the threaded disc, cross-shaped ribs are provided on the end wall of the threaded disc.

[0032] like Figure 2 As shown. The L-shaped steel bar hook 2 includes a horizontal section and a vertical section. A locking nut 3 is threadedly connected to the vertical section of the L-shaped steel bar hook 2 to press the concrete cover plate 5 tightly onto the horizontal section. When supporting the concrete cover plate 5 through the horizontal section, by rotating the locking nut 3, the bottom of the locking nut 3 contacts the top surface of the concrete cover plate 5, pressing down on the concrete cover plate 5. The locking nut 3, in conjunction with the horizontal section, clamps the edge of the concrete cover plate 5.

[0033] like Figure 2 As shown, a locking plate 4 is slidably connected to the vertical section, and the locking plate 4 is located below the locking nut 3. The locking plate 4 increases the contact area between the locking nut 3 and the top surface of the concrete cover plate 5, thereby improving the stability of the clamping.

[0034] As a preferred embodiment of this utility model, in order to prevent relative sliding between the concrete cover plate and the L-shaped steel hook 2, friction texture is provided on the top surface of the horizontal section.

Claims

1. A device for easily lifting and placing concrete cover plates, characterized in that: The lifting assembly includes a concrete cover plate hoisting assembly and a lifting assembly. The hoisting assembly includes a steel wire rope (1) and an L-shaped steel hook (2) connected to the end of the steel wire rope (1). The hoisting assembly includes no less than two steel wire ropes (1), which are arranged crosswise and fixedly connected in the middle. The lifting assembly includes an adjustable lever arm (6). The pivot position of the adjustable lever arm (6) is adjustable along the axial direction of the adjustable lever arm (6). One end of the adjustable lever arm (6) is provided with a hook (9) for connecting the steel wire rope (1).

2. The device for lifting and placing concrete cover plates of claim 1, wherein: The lifting assembly also includes a support vehicle, on the top of which a rotating cylinder is horizontally rotatably mounted. The adjustable lever (6) is axially slidably connected inside the rotating cylinder, and the adjustable lever (6) is connected inside the rotating cylinder by a pin (7).

3. The device for lifting and placing concrete cover panels of claim 2, wherein: The adjustable lever arm lifting rod (6) has a pin hole (8) for inserting the pin (7), and the pin holes (8) are evenly distributed along the axial direction of the adjustable lever arm lifting rod (6).

4. The device for lifting and placing concrete cover panels of claim 2, wherein: The top of the support vehicle is vertically fixed with a support pipe, and the rotating cylinder is horizontally rotatably connected between the two support pipes.

5. The device for facilitating the lifting and placing of concrete cover plates as described in claim 1, characterized in that: The adjustable lever (6) has a rubber handle fixedly fitted at the end away from the hook (9).

6. The device of claim 1, wherein: The end of the wire rope (1) is fixedly connected to a locking ball. A threaded disc is slidably fitted on the wire rope (1). An external thread is provided on the outer wall of the threaded disc. The top of the L-shaped rebar hook (2) is provided with an internal thread that matches the threaded disc. The outer diameter of the locking ball is larger than the diameter of the wire rope (1). The locking ball is located inside the L-shaped rebar hook (2).

7. The device of claim 6, wherein: The end wall of the threaded disc is provided with cross-shaped ribs.

8. The device of claim 1, wherein: The L-shaped steel bar hook (2) includes a horizontal section and a vertical section. The vertical section of the L-shaped steel bar hook (2) is threaded with a locking nut (3) that presses the concrete cover plate (5) onto the horizontal section.

9. The device of claim 8, wherein: A locking plate (4) is slidably connected on the vertical section, and the locking plate (4) is located below the locking nut (3).

10. The device of claim 8, wherein: The top surface of the horizontal section is provided with friction texture.

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