阅读说明：本技术 一种用于工作梯上的驻停与安全警示联动装置 (Parking and safety warning linkage device for working ladder ) 是由 范强 于 2020-05-22 设计创作，主要内容包括：本发明公开了一种用于工作梯上的驻停与安全警示联动装置,包括工作梯架、固定脚撑、脚轮、脚轮轴、脚轮轴支撑座、压簧、螺盖、驻停与安全警示联动装置和楼梯,固定脚撑、脚轮轴、脚轮轴支撑座、压簧、螺盖、脚轮、驻停与安全警示联动装置和楼梯均安装在工作梯架上,脚轮轴与压簧插入脚轮轴支撑座内,脚轮轴与压簧连接,螺盖与脚轮轴连接,螺盖与脚轮轴支撑座连接,脚轮安装在脚轮轴底端。在工作时,当工作梯架处在移动状态或固定撑脚未着地时,工作梯架在人员进入的梯道上自动伸出一块“禁止进入”的警示牌阻挡操作人员登梯,反之当固定撑脚着地,则“禁止进入”的警示牌自动收起,梯道畅通,操作人员可以登梯。(The invention discloses a parking and safety warning linkage device for a working ladder, which comprises a working ladder frame, a fixed foot support, a foot wheel shaft supporting seat, a pressure spring, a screw cover, a parking and safety warning linkage device and a stair, wherein the fixed foot support, the foot wheel shaft supporting seat, the pressure spring, the screw cover, the foot wheel, the parking and safety warning linkage device and the stair are all arranged on the working ladder frame, the foot wheel shaft and the pressure spring are inserted into the foot wheel shaft supporting seat, the foot wheel shaft is connected with the pressure spring, the screw cover is connected with a foot wheel shaft supporting seat, and the foot wheel is arranged at the. When the working ladder frame works, when the working ladder frame is in a moving state or the fixed supporting feet are not grounded, the working ladder frame automatically stretches out a warning board which prohibits people from entering the ladder to block an operator from climbing the ladder, otherwise, when the fixed supporting feet are grounded, the warning board which prohibits people from entering the ladder is automatically folded, the ladder is unblocked, and the operator can climb the ladder.)

1. The parking and safety warning linkage device for the working ladder is characterized by comprising a working ladder frame, a fixed foot support, a caster wheel shaft supporting seat, a pressure spring, a screw cap, a parking and safety warning linkage device and a stair, wherein the fixed foot support, the caster wheel shaft supporting seat, the pressure spring, the screw cap, the caster wheel, the parking and safety warning linkage device and the stair are all arranged on the working ladder frame, the caster wheel shaft and the pressure spring are inserted into the caster wheel shaft supporting seat, the caster wheel shaft is connected with the pressure spring, the screw cap is connected with a caster wheel shaft, the screw cap is connected with the caster wheel shaft supporting seat, and the caster wheel is arranged at the bottom end of the caster wheel shaft.

2. The parking and safety warning linkage device for the working ladder according to claim 1, wherein the safety warning linkage device comprises a handle, a transverse shaft rocker arm, a transverse shaft, a handle rocker arm, a first connecting rod, a second connecting rod, a warning board and a warning board rocker arm, the transverse shaft rocker arm is connected with the transverse shaft, the warning board is connected with the warning board rocker arm, one end of the handle rocker arm is connected with the handle, one end of the handle rocker arm far away from the handle is connected with the first connecting rod, one end of the handle rocker arm far away from the first connecting rod is connected with a caster shaft, one end of the second connecting rod is connected with the transverse shaft rocker arm, and one end of the transverse shaft rocker arm far away from the second connecting rod is connected with the warning board rocker arm.

3. The parking and safety warning linkage for the working ladder according to claim 2, wherein the handle rocker comprises a first handle rocker mounted at the left end of the cross shaft rocker and a second handle rocker mounted at the right end of the cross shaft rocker, the first handle rocker being connected to the handle.

4. The parking and safety warning linkage assembly for a work ladder of claim 3, wherein the first link includes a left first link connected to the first handle rocker and a right first link connected to the second handle rocker.

Technical Field

The invention relates to the technical field of airport machineshop working ladders, in particular to a parking and safety warning linkage device for a working ladder.

Background

At present, the engineering work ladders used by various airport airliners are all screw supporting feet, and when the supporting feet are not grounded or the work ladder is not stably supported, no warning and personnel climbing stopping device is provided, so that the important potential safety hazard exists.

Disclosure of Invention

In order to solve the problems, the invention provides a parking and safety warning linkage device for a working ladder, when the working ladder frame is in a moving state or a fixed supporting foot is not landed, a warning board for forbidding entry automatically extends out of a ladder way into which a worker enters from the working ladder frame to block the operator from climbing the ladder, otherwise, when the fixed supporting foot is landed, the warning board for forbidding entry is automatically retracted, the ladder way is unblocked, and the operator can climb the ladder.

The parking and safety warning linkage device for the working ladder comprises a working ladder frame, a fixed foot support, a trundle shaft supporting seat, a pressure spring, a screw cover, a parking and safety warning linkage device and a stair, wherein the fixed foot support, the trundle shaft supporting seat, the pressure spring, the screw cover, the trundle, the parking and safety warning linkage device and the stair are all arranged on the working ladder frame, the trundle shaft and the pressure spring are inserted into the trundle shaft supporting seat, the trundle shaft is connected with the pressure spring, the screw cover is connected with the trundle shaft supporting seat, and the trundle is arranged at the bottom end of the trundle shaft supporting seat.

In the above scheme, safety warning aggregate unit includes handle, cross axle rocking arm, cross axle, handle rocking arm, first connecting rod, second connecting rod, warning sign and warning sign rocking arm, the cross axle rocking arm is connected with the cross axle, the warning sign is connected with the warning sign rocking arm, the one end and the handle of handle rocking arm are connected, the one end and the first connecting rod of handle rocking arm are kept away from to the handle rocking arm are connected, the one end and the truckle axle connection of handle rocking arm are kept away from to first connecting rod, the one end and the cross axle rocking arm of second connecting rod are connected, the one end and the warning sign rocking arm that the cross axle rocking arm was kept away from to the second connecting rod are.

In the above scheme, the handle rocker arm comprises a first handle rocker arm and a second handle rocker arm, the first handle rocker arm is mounted at the left end of the cross shaft rocker arm, the second handle rocker arm is mounted at the right end of the cross shaft rocker arm, and the first handle rocker arm is connected with the handle.

In the above scheme, the first connecting rod comprises a left first connecting rod and a right first connecting rod, the left first connecting rod is connected with the first handle rocker arm, and the right first connecting rod is connected with the second handle rocker arm.

The invention has the advantages and beneficial effects that: the invention provides a parking and safety warning linkage device for a working ladder, wherein when a fixed supporting leg of the working ladder is lifted off the ground, a trundle is stressed on the ground, and the working ladder is in a movable state, a warning board of the device is turned outwards, so that an operator can be effectively warned and blocked to get on the working ladder, the violation phenomenon that the operator gets on the working ladder without supporting the supporting leg of the working ladder in an airport is avoided, and the potential safety hazard of personnel and airplane damage caused by sliding of the working ladder is eliminated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present invention.

In the figure: 1. working ladder frame 2, fixed arm brace 3, foot wheel shaft supporting seat 4, handle

5. Handle rocker arm 6, cross shaft 7, cross shaft rocker arm 8 and first connecting rod

9. Second connecting rod 10, warning board 11, warning board rocker arm 12 and screw cap

13. Castor shaft 14, pressure spring 15, castor 16 and stairs

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1, the present invention is a parking and safety warning linkage device for a working ladder, comprising: working ladder frame 1, fixed heel brace 2, truckle 15, truckle axle 13, truckle axle support seat 3, the pressure spring 14, spiral shell lid 12, parking and safety warning aggregate unit and stair 16, fixed heel brace 2, truckle axle 13, truckle axle support seat 3, the pressure spring 14, spiral shell lid 12, truckle 15, parking and safety warning aggregate unit and stair 16 are all installed on working ladder frame 1, truckle axle 13 inserts in truckle axle support seat 3 with pressure spring 14, screw up spiral shell lid 12, truckle axle 13 is connected with pressure spring 14, spiral shell lid 12 is connected with truckle axle 13, spiral shell lid 12 is connected with truckle axle support seat 3, truckle 15 is installed in truckle axle 13 bottom, truckle axle support seat 3 welds on working ladder frame 1, be used for installing spiral shell lid 12, truckle axle 13 and pressure spring 14.

Further, the safety warning linkage includes: the device comprises a handle 4, a transverse shaft rocker arm 7, a transverse shaft 6, a handle rocker arm 5, a first connecting rod 8, a second connecting rod 9, a warning board 10 and a warning board rocker arm 11, wherein the transverse shaft rocker arm 7 and the transverse shaft 6 are integrally welded and are used for synchronizing the rotation angles of the handle rocker arm 5 and the transverse shaft rocker arm 7 on the two sides of the working ladder frame 1; the warning board 10 is connected with the warning board rocker arm 11 and integrally welded, the second connecting rod 9 is connected with the transverse shaft rocker arm 7 and the warning board rocker arm 11 through holes at two ends by shaft pins respectively, one end of the handle rocker arm 5 is integrally welded with the handle 4, the force for rotating the handle 4 is transmitted to the first connecting rod 8 through the handle rocker arm 5, one end of the handle rocker arm 5 far away from the handle 4 is connected with the first connecting rod 8, one end of the first connecting rod 8 far away from the handle rocker arm 5 is connected with the caster shaft 13, one end of the second connecting rod 9 is connected with the transverse shaft rocker arm 7, and one end of the second connecting rod 9 far away from the transverse shaft rocker arm 7 is connected with the warning board rocker arm. The upper end of the caster shaft 13 is connected with the first connecting rod 8 through a bolt, and the lower end of the caster shaft is connected with a caster 15, so that the axial up-and-down lifting action of the caster shaft 13 is completed through the force of the first connecting rod 8 for radially rotating the horizontal shaft rocker arm 7.

Specifically, the handle rocker arm 5 comprises a first handle rocker arm and a second handle rocker arm, the first handle rocker arm is arranged at the left end of the cross shaft rocker arm 7, the second handle rocker arm is arranged at the right end of the cross shaft rocker arm 7, and the first handle rocker arm is connected with the handle 4.

The first connecting rod 8 comprises a left first connecting rod and a right first connecting rod, the left first connecting rod is connected with the first handle rocker arm, and the right first connecting rod is connected with the second handle rocker arm.

The working principle of the technical scheme is as follows:

1. when the handle 4 is pulled inwards to the horizontal shaft 6 and rotates 90 degrees anticlockwise, the handle rocker arm 5 and the horizontal shaft rocker arm 7 are synchronously driven to rotate 90 degrees, and two different actions are also completed at the same time:

firstly, the operation is as follows: when the hand arms 5 on the two sides of the working ladder frame 1 rotate by 90 degrees, force can reach the trundle shafts 13 through the first connecting rods 8, the trundle shafts 13 are radially constrained and converted into axial downward force, the downward force acts on the trundles 15, so that the whole working ladder frame 1 is lifted, the fixed supporting feet 3 leave the ground, and the working ladder frame 1 is in a movable state;

secondly, action two: the transverse shaft rocker arm 7 rotates by 90 degrees, force is transmitted to the warning board rocker arm 11 through the second connecting rod 9, the warning board 10 is turned clockwise and outwards in the radial direction, the warning board 10 is hidden in the step of the stair 16 and turned out to a space between an upper step and a lower step, so that a passage for personnel to go upwards from the step is blocked, a warning word on the warning board 10 can remind the operator that the operator cannot go up the working ladder in the state;

2. when the handle 4 is pushed to the transverse shaft 6 to rotate 90 degrees clockwise, the caster 15 is retracted, the working ladder frame 1 rises, the fixed foot support lands on the ground, the warning board 10 turns inwards and is hidden in the ladder bed of the stair 16, the upward passage is opened at the moment, and a person can go up the working ladder.

The invention has the advantages and beneficial effects that:

according to the invention, the parking and safety warning linkage device is arranged, so that when the fixed supporting feet of the working ladder frame are stressed when being lifted off the ground by the casters and the working ladder is in a movable state, the warning board of the device is turned outwards, the working ladder is effectively warned and blocked for operators to go up, the violation phenomenon that the operators go up the working ladder when the operators do not support the supporting feet of the working ladder is avoided, and the potential safety hazard of injury to the personnel and the airplane caused by sliding of the working ladder is eliminated.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.