Automobile crane with lifting hook having protection function

Abstract

The utility model provides an automobile crane with a lifting hook having a protection function, which comprises an automobile main body, a protection mechanism and a suspension arm, the suspension arm is arranged at the rear end of the upper surface of the automobile main body, and the front end of the suspension arm is fixedly connected with a device frame. According to the automobile crane with the lifting hook having the protection function, provided by the utility model, the lifting speed of the lifting hook is always kept in a relatively slow state by arranging the protection mechanism when the automobile crane is in normal operation, and the clamping column in the protection mechanism can be always positioned in the sliding chute without influencing the normal rotation of the rotating disc; when a rope of the lifting hook is broken or slips, the lifting hook quickly descends, at the moment, the rotating disc is driven to quickly rotate, under the action of centrifugal force, a clamping column in a sliding groove moves outwards until a transverse groove of the clamping column is clamped in a clamping groove, and at the moment, the rotating disc can be limited and fixed through the clamping column; and the lifting hook is prevented from continuously falling, so that the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile cranes, in particular to an automobile crane with a hook having a protective function. Background Art

[0002] A truck crane is a type of crane installed on an ordinary or special automobile chassis, with its driving cab and lifting control cab separated. The advantages of this type of crane are good mobility and rapid transfer. The disadvantages are that it needs to be outrigger when working, cannot travel with load, and is not suitable for working on soft or muddy grounds. The chassis performance of a truck crane is equivalent to that of a truck with the same gross vehicle weight, and meets the technical requirements of road vehicles, so it can travel unimpeded on all types of roads.

[0003] Truck cranes have a wide range of lifting capacities, from 8 tons to 1,600 tons, and the number of axles on the chassis can range from 2 to 10. They are the most produced and widely used type of cranes. Truck cranes use hooks to lift workpieces, but current truck cranes often do not have hook protection structures. Once the rope is unhooked, it is unavoidable, especially in important fields such as power construction, bridges, and chemicals, which will cause huge losses.

[0004] Therefore, it is necessary to provide a new automobile crane with a hook having a protective function to solve the above-mentioned technical problems. Summary of the invention

[0005] The utility model provides a car crane with a hook having a protection function, and solves the technical problem that current car cranes usually have no protection structure for the hook, and once the rope is unhooked, it cannot be avoided.

[0006] In order to solve the above technical problems, the utility model provides a car crane with a hook having a protective function, comprising a car body and a protective mechanism;

[0007] A suspension arm, the suspension arm is arranged at the rear end of the upper surface of the automobile body, the front end of the suspension arm is fixedly connected with a device frame, the bottom end of the device frame is provided with a hook, and the protection mechanism is arranged on the device frame;

[0008] The protection mechanism includes an extension frame transversely fixedly connected to the front end surface of the device frame, both sides of the extension frame are fixedly connected, the interior of the two fixing rings are transversely rotatably connected with a rotating disk, the outer surface of the fixing ring is provided with a positioning groove, the outer surface of the rotating disk is provided with a slide groove along the radial direction of its cross-section, the interior of the slide groove is slidably connected with a positioning column, one side surface of the positioning column is provided with a transverse groove, a transverse axis is transversely fixedly connected between the two rotating disks, the outer surface of the transverse axis is surrounded by an anti-fall rope, the outer surface of the hook is fixedly connected with a connecting block, and the outer end of the anti-fall rope is fixedly connected to the outer surface of the connecting block.

[0009] Preferably, the specification of the transverse groove is matched with the cross-sectional thickness of the fixing ring.

[0010] Preferably, the locking groove is provided on the upper surface of the fixing ring.

[0011] Preferably, the anti-fall rope is a steel wire rope.

[0012] Preferably, the central axes of the two rotating disks and the horizontal axis are located in the same straight line.

[0013] Preferably, a control room is provided on the automobile body.

[0014] Compared with the related art, the automobile crane with a hook having a protective function provided by the utility model has the following beneficial effects: the utility model provides an automobile crane with a hook having a protective function. By setting a protective mechanism, when the device is operating normally, the lifting and lowering speed of the hook is always maintained at a relatively slow state, and the positioning column in the protective mechanism can always be located inside the slide groove, which will not affect the normal rotation of the rotating disk. When the rope of the hook breaks or slips off, the hook will drop rapidly, and at this time it will drive the rotating disk to rotate rapidly. Under the action of centrifugal force, the positioning column inside the slide groove will move outward until the transverse groove of the positioning column is stuck in the positioning groove. At this time, the rotating disk can be limited and fixed by the positioning column to prevent the hook from continuing to fall, thereby improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the overall structure of a truck crane with a hook having a protective function provided by the utility model;

[0016] Figure 2 for Figure 1 The schematic diagram of the boom structure of the truck crane with a hook having a protective function is shown;

[0017] Figure 3 for Figure 1 The diagram shown is a partial structural diagram of the protection mechanism of a truck crane with a hook having a protection function.

[0018] Numbers in the figure: 1. vehicle body, 2. control room, 3. boom, 4. device frame, 5. hook, 6. extension frame, 7. fixing ring, 8. positioning groove, 9. rotating disk, 10. slide groove, 11. positioning column, 12. horizontal groove, 13. anti-fall rope, 14. connecting block. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0020] Please refer to Figure 1 , Figure 2 and Figure 3 ,in, Figure 1 A schematic diagram of the overall structure of a truck crane with a hook having a protective function provided by the utility model; Figure 2 for Figure 1 The schematic diagram of the boom structure of the truck crane with a hook having a protective function is shown; Figure 3 for Figure 1 The schematic diagram of the protection mechanism of the vehicle crane with a hook having a protection function is shown. The vehicle crane with a hook having a protection function comprises a vehicle body 1 and a protection mechanism;

[0021] A suspension arm 3, the suspension arm 3 is arranged at the rear end of the upper surface of the automobile body 1, the front end of the suspension arm 3 is fixedly connected with a device frame 4, the bottom end of the device frame 4 is provided with a suspension hook 5, and the protection mechanism is arranged on the device frame 4;

[0022] The protective mechanism includes an extension frame 6 which is laterally fixedly connected to the front end surface of the device frame 4, and fixed rings 7 are fixedly connected on both sides of the extension frame 6. The insides of the two fixed rings 7 are laterally rotatably connected with rotating disks 9, and the outer surface of the fixed ring 7 is provided with a locking groove 8, and the outer surface of the rotating disk 9 is provided with a slide groove 10 along the radial direction of its cross-section. The inside of the slide groove 10 is slidably connected with a locking column 11, and a transverse groove 12 is provided on one side surface of the locking column 11. A transverse axis is laterally fixedly connected between the two rotating disks 9, and an anti-fall rope 13 is wound around the outer surface of the transverse axis. The outer surface of the hook 5 is fixedly connected with a connecting block 14, and the outer end of the anti-fall rope 13 is fixedly connected to the outer surface of the connecting block 14.

[0023] The central axis of the two rotating disks 9 and the horizontal axis are located in the same straight line.

[0024] When the device is operating normally, the lifting and lowering speed of the hook 5 is always maintained at a relatively slow state, and the positioning column 11 in the protective mechanism can always be located inside the slide groove 10, which will not affect the normal rotation of the rotating disk 9. When the rope of the hook 5 breaks or slips, the hook 5 will drop rapidly. At this time, the other end of the anti-fall rope 13 is driven by the hook 5 to move downward rapidly, thereby driving the rotating disk 9 to rotate rapidly. Under the action of centrifugal force, the positioning column 11 inside the slide groove 10 will move outward until the transverse groove 12 of the positioning column 11 is stuck in the positioning groove 8. At this time, the rotating disk 9 can be limited and fixed by the positioning column 11, thereby pulling in the anti-fall rope 13 to prevent the hook 5 from continuing to fall, thereby improving the practicality of the device.

[0025] The specification of the transverse groove 12 is adapted to the cross-sectional thickness of the fixing ring 7 .

[0026] The specification of the transverse groove 12 is adapted to the cross-sectional thickness of the fixing ring 7 to ensure that the locking column 11 can be locked in the locking groove 8, thereby ensuring the protective effect of the device.

[0027] The locking groove 8 is formed on the upper surface of the fixing ring 7 .

[0028] When the locking column 11 moves to the lower end, it will move downward under the action of its own gravity. If the locking groove 8 is set at the lower part of the fixing ring 7, even if the rotating disk 9 rotates slowly, the locking column 11 will protrude to limit the rotating disk 9.

[0029] The anti-fall rope 13 is a steel wire rope.

[0030] The steel wire rope ensures the protective effect of the protective mechanism.

[0031] A control room 2 is provided on the vehicle body 1 .

[0032] The control room 2 is used to control the operation of the boom 3 .

[0033] The working principle of the automobile crane with a hook having a protective function provided by the utility model is as follows:

[0034] When the device is operating normally, the lifting and lowering speed of the hook 5 is always maintained at a relatively slow state, and the positioning column 11 in the protective mechanism can always be located inside the slide groove 10, which will not affect the normal rotation of the rotating disk 9. When the rope of the hook 5 breaks or slips, the hook 5 will drop rapidly. At this time, the other end of the anti-fall rope 13 is driven by the hook 5 to move downward rapidly, thereby driving the rotating disk 9 to rotate rapidly. Under the action of centrifugal force, the positioning column 11 inside the slide groove 10 will move outward until the transverse groove 12 of the positioning column 11 is stuck in the positioning groove 8. At this time, the rotating disk 9 can be limited and fixed by the positioning column 11, thereby pulling in the anti-fall rope 13 to prevent the hook 5 from continuing to fall, thereby improving the practicality of the device.

[0035] Compared with the related art, the automobile crane with a hook having a protective function provided by the utility model has the following beneficial effects:

[0036] The utility model provides a car crane with a hook having a protection function. By setting a protection mechanism, when the device is in normal operation, the lifting speed of the hook 5 is always kept in a relatively slow state, and the blocking column 11 in the protection mechanism can always be located inside the slide groove 10, which will not affect the normal rotation of the rotating disk 9. When the rope of the hook 5 breaks or slips off, the hook 5 will drop rapidly, and at this time, the rotating disk 9 will be driven to rotate rapidly. Under the action of centrifugal force, the blocking column 11 inside the slide groove 10 will move outwards until the transverse groove 12 of the blocking column 11 is stuck in the inside of the blocking groove 8. At this time, the rotating disk 9 can be limited and fixed by the blocking column 11 to prevent the hook 5 from continuing to fall, thereby improving the practicality of the device.

[0037] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A truck crane with a hook having a protective function, characterized in that: It comprises a vehicle body (1) and a protective mechanism; A suspension arm (3), the suspension arm (3) being arranged at the rear end of the upper surface of the automobile body (1), the front end of the suspension arm (3) being fixedly connected to a device frame (4), the bottom end of the device frame (4) being provided with a suspension hook (5), and the protection mechanism being arranged on the device frame (4); The protection mechanism comprises an extension frame (6) which is transversely fixedly connected to the front end surface of the device frame (4), both sides of the extension frame (6) are fixedly connected with a fixing ring (7), the interior of the two fixing rings (7) are both transversely rotatably connected with a rotating disk (9), the outer surface of the fixing ring (7) is provided with a positioning groove (8) through-through, the outer surface of the rotating disk (9) is provided with a slide groove (10) along the radial direction of its cross section, the interior of the slide groove (10) is slidably connected with a positioning column (11), one side surface of the positioning column (11) is provided with a transverse groove (12), a transverse axis is transversely fixedly connected between the two rotating disks (9), the outer surface of the transverse axis is wound with an anti-fall rope (13), the outer surface of the hook (5) is fixedly connected with a connecting block (14), and the outer end of the anti-fall rope (13) is fixedly connected to the outer surface of the connecting block (14).

2. The truck crane with a hook having a protective function according to claim 1, characterized in that: The specification of the transverse groove (12) is adapted to the cross-sectional thickness of the fixing ring (7).

3. The truck crane with a hook having a protective function according to claim 1, characterized in that: The locking groove (8) is formed on the upper surface of the fixing ring (7).

4. The truck crane with a hook having a protective function according to claim 1, characterized in that: The anti-falling rope (13) is a steel wire rope.

5. The truck crane with hook having protection function according to claim 1, characterized in that: The central axes of the two rotating disks (9) and the horizontal axis are located on the same straight line.

6. The truck crane with hook protection function according to claim 1, characterized in that: A control room (2) is provided on the automobile body (1).

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