CN-121989808-A - Emergency escape device and working machine

CN121989808ACN 121989808 ACN121989808 ACN 121989808ACN-121989808-A

Abstract

The application discloses an emergency escape device and an operation machine, wherein the periphery of a cab is outwards and vertically connected with a supporting channel for an operator to stand, the emergency escape device comprises a horizontal channel, a primary escape ladder and a secondary escape ladder, the horizontal channel is communicated with a first supporting channel on one side of the cab and extends outwards from the first supporting channel, the primary escape ladder is provided with a first escape channel extending along the height direction, the top end of the first escape channel is communicated with the horizontal channel, the secondary escape ladder is arranged at the bottom of the primary escape ladder, and a mechanical telescopic limiting mechanism is used for driving the secondary escape ladder to switch between a folded state and an unfolded state so that one end of the secondary escape ladder, which is away from the primary escape ladder, is separated from the ground or is in butt joint with the ground. The emergency escape device can be rapidly and safely evacuated from a higher cab to the ground by utilizing the primary escape ladder and the secondary escape ladder, can be normally used for escape under special conditions of power failure, incapability of working by hydraulic pressure and the like, and has higher safety coefficient.

Inventors

TANG CONGXUAN
LU YIMING
CAI ZONGCHENG
HU TIANYU
ZHANG XIANG

Assignees

中联重科土方机械有限公司
陕西中联西部土方机械有限公司

Dates

Publication Date: 20260508
Application Date: 20260225

Claims (11)

1. An emergency escape device applied to a working machine, wherein the working machine comprises a cab (10), and the emergency escape device is characterized in that a supporting channel is vertically connected to the periphery of the cab (10) outwards, and comprises: -a horizontal channel (20), said horizontal channel (20) communicating with a first support channel (11) of one side of said cab (10), said horizontal channel (20) extending outwards from said first support channel (11); A primary escape ladder (30) having a first escape passage (32) extending in a height direction, a top end of the first escape passage (32) being communicated with the horizontal passage (20); the second-level escape ladder (40) is arranged at the bottom of the first-level escape ladder (30); The mechanical telescopic limiting mechanism is arranged on the secondary escape ladder (40) and is used for driving the secondary escape ladder (40) to switch between a folded state and an unfolded state, so that one end of the secondary escape ladder (40) deviating from the primary escape ladder (30) is separated from or abutted to the ground.
2. Emergency escape device according to claim 1, characterized in that the primary escape ladder (30) comprises: The protection piece (31), the protection piece (31) extends along the height direction and the cross section is of a U-shaped structure; The first escape ladder (33) is arranged along the height direction, the top end of the first escape ladder is connected with the horizontal channel (20), two ends of the protective piece (31) along the width direction are respectively connected with two sides of the first escape ladder (33) in the width direction, and the protective piece (31) and the first escape ladder (33) enclose each other to form a first escape channel (32) for personnel to pass through.
3. Emergency escape device according to claim 2, characterized in that the first escape ladder (33) comprises: -a frame (331), the top end of said frame (331) being connected to the end of said horizontal channel (20); The cat ladder portion (332) is arranged on the frame (331), the cat ladder portion (332) with the frame (331) is connected through head rod (333), the cat ladder portion (332) include two along montant (3321) of horizontal direction interval arrangement and connect two a plurality of first horizontal poles (3322) between montant (3321), a plurality of first horizontal pole (3322) are along the direction of height interval arrangement, every be equipped with pedal region (3323) and tongs region (3324) on first horizontal pole (3322), pedal region (3323) are located the middle part of first horizontal pole (3322), tongs region (3324) are smooth to be set up, be equipped with a plurality of anti-skidding teeth on pedal region (3323).
4. Emergency escape device according to claim 2, characterized in that the guard (31) comprises a plurality of U-shaped strips (311) arranged at intervals along the height direction, the open directions of the U-shaped strips (311) are identical, the free ends of the U-shaped strips are connected with both sides of the width direction of the first escape ladder (33), a plurality of guard bars (312) are connected between any two adjacent U-shaped strips (311), and a plurality of guard bars (312) between two adjacent U-shaped strips (311) are arranged at intervals along the circumferential direction.
5. An emergency escape device according to claim 3, wherein the top end of the frame (331) extends upward and is connected with an extension portion, the extension portion comprises two second connecting rods (335) arranged at intervals along the horizontal direction, each second connecting rod (335) is provided with a handrail (334), and a plurality of chains (336) are connected between the two second connecting rods (335).
6. Emergency escape device according to any one of claims 1 to 5, characterized in that the mechanical telescopic limit mechanism comprises a mounting assembly (41) and a linear drive (43) provided to the mounting assembly (41), the secondary escape ladder (40) comprising: The first-level link mechanism (42), quantity is multiunit and head and the tail articulates in proper order, every group first-level link mechanism (42) all include two sets of first link assembly along horizontal direction interval arrangement, first link assembly includes two first connecting rods (421) of mutual articulated, be located the head end two sets of first link assembly of first-level link mechanism (42) respectively through second connecting rod (422) with installation component (41) are articulated, in every group first-level link mechanism (42), two sets of be connected with one between the pin joint of two first connecting rods (421) of first link assembly and supply personnel to climb second horizontal pole (45), linear driving piece (43) are used for spacing the swing of second connecting rod (422) is used for driving multiunit first-level link mechanism (42) folding or expansion.
7. Emergency escape device according to claim 6, characterized in that it further comprises a second support channel (12) arranged close to the underside of the cab (10), the mounting assembly (41) comprising: The mounting brackets (411) are mounted on the side wall of the second supporting channel (12), the number of the mounting brackets (411) is two, the mounting brackets (411) are arranged at intervals, arc-shaped grooves (412) are formed in the mounting brackets (411), and a second cross rod (45) is connected between the two mounting brackets (411); The sliding block (413) is inserted into the arc-shaped groove (412) in a sliding manner; Among two first connecting rods (421) in two groups of first connecting rod assemblies of the primary connecting rod mechanism (42) at the head end, one first connecting rod (421) is hinged with the mounting bracket (411) at a first hinge point, the other first connecting rod (421) is hinged with the first end of the second connecting rod (422) at a second hinge point, the second end of the second connecting rod (422) is hinged with the sliding block (413) at a third hinge point, and the inner concave surface of the second connecting rod (422) and the inner concave surface of the arc-shaped groove (412) are oppositely arranged.
8. The emergency escape device of claim 7 wherein the second link (422) is hinged to the mounting bracket (411) at a fourth hinge point, the fourth hinge point being located between the second hinge point and the third hinge point, the mounting bracket (411) being of square configuration, the first hinge point being located below the fourth hinge point.
9. The emergency escape device according to claim 7, wherein a mounting frame (423) is provided on a side wall of the second link (422), the mounting frame (423) is disposed near a first end of the second link (422), the mounting frame (423) forms an avoidance space for avoiding the second hinge point, the linear driving member (43) is a gas spring, one end of the gas spring is hinged to the mounting bracket (411), and the other end of the gas spring is hinged to one side of the mounting frame (423) away from the second hinge point.
10. Emergency escape device according to claim 6, characterized in that the secondary escape ladder (40) comprises a secondary linkage (44) connected to the tail end of the primary linkage (42) at the end, the secondary linkage (44) comprising two second linkage assemblies arranged at intervals, a second cross bar (45) being connected between the two second linkage assemblies, each second linkage assembly comprising two third links (441), the first ends of the two third links (441) being hinged, the second ends being hinged to the tail ends of the two first links (421) of the first linkage assemblies, respectively, the third links (441) having a length smaller than the length of the first links (421).
11. A work machine comprising an emergency escape device according to any one of claims 1 to 10.

Description

Emergency escape device and working machine Technical Field The application belongs to the technical field of engineering machinery, and particularly relates to an emergency escape device and an operation machine. Background In some working machines, for example, in ultra-large excavators, the cab is more than 6m away from the ground, and in an emergency situation, the driver cannot directly escape from the vehicle, so that an emergency escape passage needs to be designed, and when an emergency dangerous situation occurs in the equipment, the driver can safely and quickly evacuate from the cab to the ground through the emergency escape passage. In the prior art, the escape passage is generally arranged to control the placement of the escape ladder by means of hydraulic pressure or electric power, but when the hydraulic pressure or the electric power cannot be used, the escape ladder cannot be normally started to be placed, and the escape ladder cannot reach the bottom ground completely in the mode, so that the escape ladder needs to be used for escaping by means of a force caterpillar, and potential safety hazards exist. Disclosure of Invention The application aims to provide an emergency escape device and a working machine, which are used for solving the technical problem that an escape passage in the prior art needs to be controlled by electric power or hydraulic pressure to cause low safety coefficient. In order to achieve the above object, according to an aspect of the present application, there is provided an emergency escape apparatus for use in a working machine, the working machine including a cab, a support passage being vertically connected to the periphery of the cab, the emergency escape apparatus including: The horizontal channel is communicated with the first supporting channel at one side of the cab, and extends outwards from the first supporting channel; The first-stage escape ladder is provided with a first escape channel extending along the height direction, and the top end of the first escape channel is communicated with the horizontal channel; the second-stage escape ladder is arranged at the bottom of the first-stage escape ladder; the mechanical telescopic limiting mechanism is arranged on the secondary escape ladder and is used for driving the secondary escape ladder to switch between a folded state and an unfolded state so that one end of the secondary escape ladder, which is away from the primary escape ladder, is separated from or abutted against the ground. In some embodiments, the primary escape ladder comprises: The protective piece extends along the height direction, and the cross section of the protective piece is of a U-shaped structure; The first escape ladder is arranged along the height direction, the top end of the first escape ladder is connected with the horizontal channel, two free ends of the protective piece are respectively connected with two sides of the width direction of the first escape ladder, and a first escape channel for personnel to pass through is enclosed between the protective piece and the first escape ladder. In some embodiments, the first escape ladder comprises: the top end of the frame is connected with the end part of the horizontal channel; The cat ladder portion is arranged on the frame, the cat ladder portion is connected with the frame through the first connecting rod, the cat ladder portion comprises two vertical rods which are arranged at intervals along the horizontal direction and a plurality of first cross rods which are connected between the two vertical rods, the first cross rods are arranged at intervals along the height direction, a pedal area and a grip area are arranged on each first cross rod, the pedal area is located in the middle of the first cross rod, the grip area is smooth, and a plurality of anti-slip teeth are arranged on the pedal area. In some embodiments, the protection piece comprises a plurality of U-shaped strips which are arranged at intervals along the height direction, the opening directions of the U-shaped strips are consistent, the free ends of the U-shaped strips are connected with two sides of the width direction of the first escape ladder, a plurality of protection rods are connected between any two adjacent U-shaped strips, and the protection rods between the two adjacent U-shaped strips are arranged at intervals along the circumferential direction. In some embodiments, the top end of the frame extends upwards and is connected with an extension part, the extension part comprises two second connecting rods which are arranged at intervals along the horizontal direction, one side opposite to each second connecting rod is provided with an armrest, and a plurality of chains are connected between the two second connecting rods. In some embodiments, the mechanical telescopic limiting mechanism includes a mounting assembly and a linear drive member disposed in the mounting assembly, and the secondary escape ladder in