Cantilever crane for emergency escape

Abstract

The utility model discloses a cantilever crane for emergency escape, which is characterized in that the upper side of a column body of a stand column is provided with a rotary arm frame which is perpendicular to the stand column and can rotate and adjust around the stand column, and the upper part of one end, far away from the stand column, of the rotary arm frame is provided with a hoisting mechanism; an escape cage which is connected with a hoisting mechanism and is subjected to lifting adjustment through the hoisting mechanism is arranged at the lower part of one end, far away from the stand column, of the rotary arm frame; according to the utility model, not only can timely and efficiently escape and rescue trapped persons in the main suspension cage through the escape suspension cage under the condition that the main suspension cage is suspended in the air due to failure, but also perfect butt joint of the escape suspension cage and the main suspension cage can be ensured in the rescue process, and the safety of the persons in the rescue process is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting equipment, in particular to a cantilever crane for emergency escape. Background Art

[0002] In vertical shaft construction fields such as hydropower and mines, lifting equipment is often required to lift manned cages to transport personnel to work underground. However, during the long-term use of lifting equipment, if the crane suddenly fails during the normal lifting process, the cage will cause it to remain suspended in the air, causing the workers to be trapped in the suspended cage. If rescue is not carried out in time, the accidental fall of the cage will endanger the lives of the workers.

[0003] At present, when a cage failure in a shaft causes trapped persons to be suspended in the air, there are two common rescue methods. One is to rely on the emergency manual operation system equipped with the lifting equipment or cage system. The operator can use the manual control system to slowly lower or raise the cage. However, this emergency structure not only requires timely operation by the staff, but also requires that the equipment failure does not affect the use of the emergency system. If the failure is serious and the emergency system cannot operate normally, rapid and efficient rescue cannot be carried out. The other is to rescue by building a rescue basket. This rescue method takes a lot of time to set up and prepare, and cannot achieve timely and efficient rescue. Utility Model Content

[0004] In order to overcome the deficiencies in the background technology, the utility model discloses a cantilever crane for emergency escape. The utility model can not only use the escape cage to carry out timely and efficient rescue of trapped persons in the main cage when the main cage fails and hangs in the air, but also ensure the perfect docking of the escape cage with the main cage during the rescue process, thereby ensuring the safety of personnel during the rescue process.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A cantilever crane for emergency escape comprises a column arranged at one side of a shaft opening, a swivel arm frame which is perpendicular to the column and can be rotated and adjusted around the column is provided on the upper side of the column body, a lifting mechanism is provided on the upper part of one end of the swivel arm frame away from the column, and an escape cage which is connected to the lifting mechanism and can be raised and lowered by the lifting mechanism is provided on the lower part of one end of the swivel arm frame away from the column.

[0007] Furthermore, a slewing mechanism for driving the slewing arm to perform rotation adjustment is provided on the upper part of the column, and the slewing mechanism includes an inner ring, an outer ring and a driving device.

[0008] Furthermore, pulleys are provided on both sides of the upper part of the escape cage, and two steel ropes are provided in the lifting mechanism. One end of the two steel ropes is fixedly connected to the drum in the lifting mechanism, and the other ends of the two steel ropes are respectively passed around the corresponding pulleys on the upper part of the escape cage and connected to the slewing arm.

[0009] Furthermore, a translation mechanism for performing horizontal adjustment or micro-rotation adjustment on the escape cage is provided on the slewing arm.

[0010] Furthermore, the translation mechanism includes an electric push rod and a sliding block. Sliding blocks are provided on both sides of the rotating arm frame, and the electric push rod is used to push the sliding block to slide and adjust along the axial direction of the rotating arm frame. One end of the two steel ropes passing around the pulley is fixedly connected to the corresponding sliding block respectively.

[0011] Furthermore, both sides of the swivel arm are provided with sliding grooves arranged along the axial direction of the swivel arm, and one side of the sliding block is slidably matched with the sliding groove.

[0012] Furthermore, a wire rope joint for fixing and connecting the wire rope is provided on the other side of the sliding block.

[0013] Compared with the prior art, the utility model has the following beneficial effects: by providing a slewing arm, a lifting mechanism and an escape cage, when the main cage fails and hangs in the air, the slewing arm and the lifting mechanism can be used to lower the escape cage to the failure height of the main cage, thereby realizing the rescue of trapped persons in the main cage;

[0014] By setting up a translation mechanism, the escape cage can be adjusted horizontally or slightly rotated, so that the escape cage can be as close to the main cage as possible, while also ensuring the perfect docking of the escape cage and the main cage;

[0015] The utility model can not only carry out timely and efficient rescue of trapped persons in the main cage through the escape cage when the main cage malfunctions and hangs in the air, but also ensure the perfect docking of the escape cage with the main cage during the rescue process, thereby ensuring the safety of persons during the rescue process; the utility model has a simple structure, is easy to operate and use, and has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the translation mechanism structure of the utility model.

[0018] In the figure: 1. column; 2. slewing mechanism; 3. slewing arm; 4. lifting mechanism; 5. translation mechanism; 6. wire rope; 7. pulley; 8. escape cage; 9. electric push rod; 10. sliding block; 11. slide chute; 12. wire rope joint. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present invention and are for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction.

[0020] Please refer to the instruction manual Figure 1-2 , the utility model provides a technical solution:

[0021] Embodiment 1, a cantilever crane for emergency escape, comprising a column 1 arranged at one side of a shaft opening, a slewing arm 3 perpendicular to the column 1 being arranged on the upper side of the column body of the column 1, a slewing mechanism 2 for driving the slewing arm 3 to perform rotation adjustment being arranged on the upper part of the column 1, specifically, the slewing mechanism 2 comprises an inner ring, an outer ring and a driving device, the inner ring is fixed on the column 1, the outer ring is connected to the slewing arm 3, the inner and outer rings are kept in relative rotation by rolling elements (such as balls or rollers), and the driving device is an electric motor or a hydraulic motor, which provides power for the rotation adjustment of the slewing arm 3;

[0022] A lifting mechanism 4 is provided at the upper part of one end of the slewing arm 3 away from the column 1, and an escape cage 8 connected to the lifting mechanism 4 and adjusted for lifting by the lifting mechanism 4 is provided at the lower part of the end of the slewing arm 3 away from the column 1. Specifically, pulleys 7 are provided on both sides of the upper part of the escape cage 8, and two steel wire ropes 6 are provided in the lifting mechanism 4. One end of the two steel wire ropes 6 is fixedly connected to the drum in the lifting mechanism 4, and the other ends of the two steel wire ropes 6 are respectively passed around the corresponding pulleys 7 on the upper part of the escape cage 8 and connected to the slewing arm 3;

[0023] When the main cage in the shaft fails unexpectedly and hangs in the air, the slewing arm 3 is driven to rotate to the upper part of the shaft mouth by the slewing mechanism 2, and then the escape cage 8 is lowered into the shaft by the lifting mechanism 4. When the escape cage 8 descends to one side of the main cage, the trapped persons can enter the escape cage 8 for rescue.

[0024] In the second embodiment, when the escape cage 8 is lowered to one side of the main cage, if the distance between the escape cage 8 and the main cage is too large, or the escape cage 8 does not correspond to the entrance of the main cage, it is not only extremely inconvenient for the trapped persons to transfer into the escape cage 8, but also there are certain safety hazards. In order to achieve efficient rescue of the trapped persons, a translation mechanism 5 for horizontal adjustment or micro-rotation adjustment of the escape cage 8 is provided on the slewing arm 3. Specifically, the translation mechanism 5 includes two electric push rods 9 and two sliding blocks 10. Both sides of the arm frame 3 are provided with a slide groove 11 arranged along the axial direction of the rotating arm frame 3, one side of the two sliding blocks 10 is respectively embedded in the slide grooves 11 on both sides of the rotating arm frame 3 and slidably cooperates with the slide grooves 11, and the end of the slide groove 11 close to the column 1 is provided with an electric push rod 9 for pushing the sliding block 10 to move along the slide groove 11, and the other side of the sliding block 10 is provided with a wire rope connector 12 for fixedly connecting the wire rope 6, and one end of the two wire ropes 6 passing around the pulley 7 is fixedly connected to the wire rope connector 12 on the corresponding sliding block 10;

[0025] When the escape cage 8 descends to one side of the main cage, the two electric push rods 9 push the fixed ends of the two steel ropes 6 to slide back and forth in the same direction, so that the escape cage 8 can be adjusted horizontally to make it as close to the main cage as possible. During the lifting process, the escape cage 8 itself can satisfy the requirement that the escape cage 8 does not rotate. If the main cage and the escape cage 8 need to adjust the angle when docking, the two electric push rods 9 can be controlled to run in different directions respectively to achieve a slight rotation of the escape cage 8, so that it can meet the requirement of perfect docking with the main cage.

[0026] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the above-mentioned embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. A cantilever crane for emergency escape, comprising a column (1) arranged at one side of a shaft opening, characterized in that: A slewing arm (3) is provided on the upper side of the column body of the column (1) and is perpendicular to the column (1) and can be rotated and adjusted around the column (1); a lifting mechanism (4) is provided on the upper part of the end of the slewing arm (3) away from the column (1); and an escape cage (8) is provided on the lower part of the end of the slewing arm (3) away from the column (1) and is connected to the lifting mechanism (4) and can be raised and lowered by the lifting mechanism (4).

2. The cantilever crane for emergency escape according to claim 1, characterized in that: A slewing mechanism (2) for driving a slewing arm (3) to perform rotation adjustment is provided on the upper portion of the column (1); the slewing mechanism (2) comprises an inner ring, an outer ring and a driving device.

3. The cantilever crane for emergency escape according to claim 1, characterized in that: Pulleys (7) are provided on both sides of the upper part of the escape cage (8), and two steel wire ropes (6) are provided in the lifting mechanism (4). One end of the two steel wire ropes (6) is fixedly connected to a drum in the lifting mechanism (4), and the other ends of the two steel wire ropes (6) are respectively passed around the corresponding pulleys (7) on the upper part of the escape cage (8) and connected to the slewing arm (3).

4. The cantilever crane for emergency escape according to claim 3, characterized in that: A translation mechanism (5) for performing horizontal adjustment or micro-rotation adjustment on the escape cage (8) is provided on the slewing arm (3).

5. The cantilever crane for emergency escape according to claim 4, characterized in that: The translation mechanism (5) comprises an electric push rod (9) and a sliding block (10), wherein the sliding blocks (10) are provided on both sides of the slewing arm frame (3), and the electric push rod (9) is used to push the sliding block (10) to slide and adjust along the axial direction of the slewing arm frame (3), and one end of the two steel wire ropes (6) passing around the pulley (7) is fixedly connected to the corresponding sliding block (10) respectively.

6. The cantilever crane for emergency escape according to claim 5, characterized in that: Both sides of the swivel arm frame (3) are provided with sliding grooves (11) arranged along the axial direction of the swivel arm frame (3), and one side of the sliding block (10) is slidably matched with the sliding groove (11).

7. The cantilever crane for emergency escape according to claim 6, characterized in that: A steel wire rope connector (12) for fixing and connecting the steel wire rope (6) is provided on the other side of the sliding block (10).

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