Escape device of crane cab

Abstract

The utility model relates to a crane cab escape device in the field of crane equipment, which comprises a telescopic folding ladder, a winch and a window breaking hammer which are arranged in a cab, the winch and the window breaking hammer are installed on the lower portion of the cab, and the top end of the telescopic folding ladder is correspondingly hinged to the inner top face of the cab. The head end of the telescopic folding ladder is correspondingly close to the winch and provided with a fixed pulley, the outer end of a twisted rope of the winch upwards bypasses the fixed pulley and then is fixedly connected to the foot end of the telescopic folding ladder, and a glass transom window is installed at the position, corresponding to the telescopic folding ladder, of the top of the cab; according to the escape device for the crane cab, an operator can safely escape from the top of the cab.

Description

Technical Field

[0001] The utility model relates to the field of crane equipment, in particular to an escape device for a crane driver's cab. Background Art

[0002] As is known, when a crane is in use, an operator is required to control the crane in the cab to realize the lifting and handling of the crane; when the crane is working in adverse conditions such as harsh working conditions and narrow locations, some dangerous situations may occur. If the operator cannot get out of the normal passage in a hurry, a spare escape passage is required; the most common escape device is to install an escape door on the other side walls of the cab, and the Chinese utility model patent with announcement number CN208234401U discloses a safe port crane cab, which can escape from the bottom of the cab and fall into the water, but for cranes working on land, the bottom and side walls may be blocked and unable to escape. Once the safety exit is deformed due to a collision, even the escape door cannot be opened, which will put the operator in a completely unfavorable situation. Utility Model Content

[0003] In order to overcome the deficiencies in the background technology and solve the existing technical problems, the utility model discloses a crane cab escape device, which can enable an operator to escape safely from the top of the cab.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A crane cab escape device comprises a telescopic folding ladder, a winch and a window-breaking hammer arranged in the cab, wherein the winch and the window-breaking hammer are installed at the lower part of the cab, the top end of the telescopic folding ladder is correspondingly hinged to the inner ceiling of the cab, the head end of the telescopic folding ladder is correspondingly close to the winch and is installed with a fixed pulley, the outer end of the winch rope is passed around the fixed pulley upward and is fixedly connected to the foot end of the telescopic folding ladder, and a glass top window is installed at the position of the telescopic folding ladder on the top of the cab corresponding to the position of the telescopic folding ladder.

[0006] Furthermore, a latch assembly is installed on the top surface of the driver's cab, and a socket corresponding to the axial insertion of an insertion rod of the latch assembly is provided on the side wall of the foot end of the telescopic folding ladder.

[0007] Furthermore, a telescopic rod is connected to the handle end of the window breaking hammer, and a paddle that can axially push the plug rod of the latch assembly is fixed to the outer end of the telescopic rod.

[0008] Furthermore, a cushion is provided at the foot end of the telescopic folding ladder.

[0009] Furthermore, a shawl is connected to the hinged rotating lower surface of the telescopic folding ladder.

[0010] Furthermore, the telescopic folding ladder is configured as a bamboo-section telescopic ladder that can be axially unfolded by its own weight.

[0011] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects:

[0012] The utility model discloses a crane driver's cab escape device, in which a telescopic folding ladder is hingedly installed on the top of the driver's cab. When not in use, the telescopic folding ladder can be retracted close to the top of the driver's cab without occupying space, and when escape is needed, the telescopic folding ladder can be rotated and lowered, so that an operator can climb up along the ladder and use a window-breaking hammer to break the glass top window of the driver's cab to escape, thereby increasing the operator's safe escape probability when an accident occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the implementation structure of the utility model;

[0014] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of part A;

[0015] Figure 3 is a schematic diagram of the plug-in structure of the latch assembly;

[0016] Figure 4 It is a structural schematic diagram of the window breaking hammer.

[0017] In the figure: 1. Driver's cab; 2. Window breaking hammer; 3. Telescopic folding ladder; 4. Fixed pulley; 5. Winch; 6. Latch assembly; 7. Telescopic rod; 8. Paddle. DETAILED DESCRIPTION

[0018] 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", "rear", "left", "right" and the like indicating directions or positional relationships, they are only corresponding to the drawings of the present invention, for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction: Embodiment 1:

[0019] Combined with Figure 1 and 2The crane cab escape device comprises a telescopic folding ladder 3, a winch 5 and a window-breaking hammer 2 arranged in the cab 1. The winch 5 and the window-breaking hammer 2 are installed at the lower part of the cab 1. Generally, the window-breaking hammer 2 is clamped in a special card seat, and the low position can facilitate the removal of the window-breaking hammer 2 and the rotating winch 5; the top end of the telescopic folding ladder 3 is correspondingly hinged to the top surface of the cab 1, so that the telescopic folding ladder 3 can be rotated upward to bring the ladder surface close to the top surface of the cab 1, and can also be rotated downward to support the foot end of the telescopic folding ladder 3 on the ground of the cab 1, and the head end of the telescopic folding ladder 3 is correspondingly close to the winch 5 and is installed with a fixed pulley 4, which can be installed on the telescopic folding ladder 3. The outer end of the winch rope of the winch 5 is passed around the fixed pulley 4 upwards and is fixedly connected to the foot end of the telescopic folding ladder 3 from above the telescopic folding ladder 3, so as to facilitate the foot end of the telescopic folding ladder 3 to be pulled for rotation and retraction; according to needs, the telescopic folding ladder 3 is configured as a bamboo-jointed telescopic ladder that can be axially expanded by its own weight, that is, when the foot end of the telescopic folding ladder 3 faces downwards, it can automatically extend and expand by its own weight in the absence of external force; in addition, the foot end of the telescopic folding ladder 3 is provided with a cushion to prevent scratching the supporting surface; a glass top window is installed at the position of the telescopic folding ladder 3 on the top of the driver's cab 1, so as to facilitate breaking the window upwards along the telescopic folding ladder 3 to escape.

[0020] When implementing the crane driver's cab escape device of the utility model, when danger occurs and the normal passage cannot be opened, the winch 5 is rotated to loosen the twisted rope, so that the foot end of the telescopic folding ladder 3 is rotated downward by gravity and slowly unfolded. At this time, if the operator can reach the foot end of the telescopic folding ladder 3, the foot end of the telescopic folding ladder 3 can also be pulled down to accelerate the rotation and unfolding. When the foot end of the telescopic folding ladder 3 is supported on the ground of the driver's cab 1, the window breaking hammer 2 is picked up and the glass top window is broken upward along the telescopic folding ladder 3, and then the top of the driver's cab 1 can be safely escaped; when it is restored after use, the window breaking hammer 2 can be put back to its original position, and the winch 5 can be rotated to tighten the twisted rope, so that the foot end of the telescopic folding ladder 3 is forced to shrink and rotate upward until it is close to the top surface of the driver's cab 1, and then the winch 5 can be fixed to limit the rotation. Embodiment 2:

[0021] Combined with Figure 3 and 4As shown, in order to prevent the winch 5 from rotating or the rope from breaking, resulting in the telescopic folding ladder 3 accidentally falling down on the operator in a safe state, it can be designed on the basis of the first embodiment that a latch assembly 6 is installed on the top surface of the driver's cab 1, and the side wall of the foot end of the telescopic folding ladder 3 is provided with a hole corresponding to the axial insertion of the plug rod of the latch assembly 6, and the telescopic folding ladder 3 is safely locked by the latch assembly 6; according to needs, the handle end of the window breaking hammer 2 is connected with a telescopic rod 7, and the outer end of the telescopic rod 7 is fixed with a paddle 8 that can axially push the plug rod of the latch assembly 6, and the telescopic rod 7 is stretched, and the paddle 8 is used to push the plug rod of the high-position latch assembly 6 to achieve locking and unlocking, and the window breaking hammer 2 with an extended handle can also enable the operator to stand in a safe position below to break the window at a long distance to prevent broken glass from falling and injuring the operator; in addition, a bag cloth is connected to the hinged rotating lower surface of the telescopic folding ladder 3, and the bag cloth can be used to catch the broken glass when breaking the window before the telescopic folding ladder 3 is unfolded to prevent the fragments from falling and splashing.

[0022] 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 crane cab escape device, characterized by: The invention comprises a telescopic folding ladder (3), a winch (5) and a window-breaking hammer (2) arranged in a driver's cab (1), wherein the winch (5) and the window-breaking hammer (2) are installed at the lower part of the driver's cab (1), the top end of the telescopic folding ladder (3) is correspondingly hinged to the top surface of the driver's cab (1), the head end of the telescopic folding ladder (3) is correspondingly close to the winch (5) and is installed with a fixed pulley (4), the outer end of the winch rope of the winch (5) is passed around the fixed pulley (4) upwards and is fixedly connected to the foot end of the telescopic folding ladder (3), and a glass top window is installed at a position corresponding to the telescopic folding ladder (3) on the top of the driver's cab (1).

2. The crane cab escape device according to claim 1 is characterized in that: A latch assembly (6) is installed on the top surface of the driver's cab (1), and a socket for axially inserting an insertion rod of the latch assembly (6) is provided on a side wall at the foot end of the telescopic folding ladder (3).

3. The crane cab escape device according to claim 2 is characterized in that: The handle end of the window breaking hammer (2) is connected to a telescopic rod (7), and the outer end of the telescopic rod (7) is fixed with a paddle (8) capable of axially moving the plug rod of the latch assembly (6).

4. The crane cab escape device according to claim 1 is characterized in that: The foot end of the telescopic folding ladder (3) is provided with a soft cushion.

5. The crane cab escape device according to claim 1 is characterized in that: A shawl is connected to the hinged rotating lower surface of the telescopic folding ladder (3).

6. The crane cab escape device according to claim 1 is characterized in that: The telescopic folding ladder (3) is configured as a bamboo-jointed telescopic ladder that can be axially unfolded by its own weight.

Images