Electric shovel boarding ladder

Abstract

The utility model relates to a boarding ladder of an electric shovel, which aims to solve the technical problem that a hanging ladder or a ladder of the existing electric shovel needs to be manually operated and the working intensity is high, and adopts the technical scheme that the boarding ladder comprises two electric telescopic rods, a folding ladder, a limiting rod, a first sensor, a second sensor and a controller, the distance between the electric shovel platform and the ground is 4 m, one end of the platform is connected with an electric shovel step, the other end of the platform is connected with the upper end of the folding ladder, two stand columns are arranged on the platform on the two sides of the folding ladder, the tail of the electric telescopic rod is hinged to the stand columns, and the head of the electric telescopic rod is downwards hinged to the two sides of the folding ladder. The limiting rod is in contact with the folding ladder, the first sensor is arranged on the limiting rod, and the second sensor is arranged on the bottom surface of the lower end of the folding ladder; the controller is electrically connected with the electric telescopic rod, the first sensor and the second sensor. According to the utility model, the automatic ascending and descending of the folding ladder can be realized, the operation intensity is greatly reduced, and some operation risks are eliminated.

Description

Technical Field

[0001] This utility model belongs to the technical field of electric shovel loading equipment, specifically relating to an electric shovel loading ladder. Background Art

[0002] Because of the high track height of mining electric shovels and the high distance between the cab and the ground, ladders or hand ladders are usually required for operators to climb to the platform where the cab is located in order to enter the cab. These ladders or hand ladders are usually fixed outside the cab and open to the external environment, providing operators with a convenient and quick passage to enter the cab.

[0003] Existing hanging ladders or escalators all require manual operation. Because hanging ladders or escalators are relatively heavy, installation and dismantling are difficult and pose certain risks. Utility Model Content

[0004] The purpose of this utility model is to solve the above-mentioned problems and provide an electric shovel loading ladder.

[0005] To solve this technical problem, the technical solution adopted by this utility model is as follows:

[0006] An electric shovel loading ladder includes two electric telescopic rods, a folding ladder, a limit rod, a first sensor, a second sensor, and a controller;

[0007] The original platform of the electric shovel is raised to a height of 4m above the ground. One end of the platform is connected to the step of the electric shovel, and the other end is connected to the upper end of the folding ladder. Two columns are vertically fixed on the platform on both sides of the folding ladder. The tails of the two electric telescopic rods are respectively hinged to the two columns, and the heads are respectively hinged to the drive shafts on both sides of the folding ladder. The limiting rod is horizontally fixed on the side wall of the electric shovel away from the platform on one side of the folding ladder. When the folding ladder is in a horizontal position, the limiting rod touches the folding ladder. The first sensor is set on the limiting rod at the position where it touches the folding ladder, and the second sensor is set on the bottom surface of the lower end of the folding ladder.

[0008] The controller is electrically connected to the electric telescopic pole, the first sensor, and the second sensor.

[0009] Furthermore, a gate is provided between the two pillars, and the gate is a one-way gate that opens towards the side facing the steps.

[0010] Furthermore, the platform is equipped with guardrails along its outer edge.

[0011] Furthermore, the folding ladder is provided with a handrail on its outer edge.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. This utility model can realize the automatic raising and lowering of the folding ladder through the controller and electric telescopic rod, eliminating the need for manual operation, greatly reducing the labor intensity, and eliminating some operational risks;

[0014] 2. This utility model, through a limit rod, a first sensor, and a second sensor, can automatically stop the folding ladder after it reaches its designated position, preventing the folding ladder from moving beyond the operating range.

[0015] 3. This utility model is equipped with a one-way opening gate, which can avoid the risk of workers falling directly into the folding ladder due to inertia when shoveling.

[0016] 4. The platform edge of this utility model is equipped with guardrails and the folding ladder edge is equipped with handrails, which can avoid the risk of workers falling when waiting for or going down the ladder;

[0017] 5. The increased platform height of this utility model can minimize the occurrence of damage to or scratches on the ladder. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the folding ladder of this utility model in a horizontal position.

[0019] Figure 2 This is a schematic diagram of the folding ladder of this utility model at its lowest position;

[0020] In the diagram: 1. Side wall of electric shovel; 2. Platform; 3. Steps; 4. Fence gate; 5. Guardrail; 6. Post; 7. Electric telescopic pole; 8. Folding ladder; 9. Limiting rod; 10. First sensor; 11. Second sensor. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] like Figure 1-2 As shown, an electric shovel loading ladder includes two electric telescopic rods 7, a folding ladder 8, a limit rod 9, a first sensor 10, a second sensor 11, and a controller;

[0023] The original platform 2 of the electric shovel is raised to a height of 4m above the ground, which can minimize the possibility of the shovel hitting or scraping the ladder. A guardrail 5 is installed on the outer edge of the platform 2 to prevent workers from falling. One end of the platform 2 is connected to the step 3 of the electric shovel, and the other end is connected to the upper end of the folding ladder 8. Two vertical pillars 6 are fixed on the platform 2 on both sides of the folding ladder 8. A gate 4 is installed between the two pillars 6. The gate 4 is a one-way gate that opens towards the step 3. Workers can only continue forward after opening the gate 4, preventing them from falling down the step 3. Due to inertia, it rushes towards the gate 4 and rolls down directly. The tails of the two electric telescopic rods 7 are respectively hinged to the two columns 6, and the heads are respectively hinged to the drive shafts on both sides of the folding ladder 8. The limiting rod 9 is horizontally fixed on one side of the electric shovel side wall 1 away from the platform 2. When the folding ladder 8 is in a horizontal position, the limiting rod 9 touches the folding ladder 8. The outer edge of the folding ladder 8 is provided with a handrail. The first sensor 10 is set on the limiting rod 9 at the position where it touches the folding ladder 8. The second sensor 11 is set on the bottom surface of the lower end of the folding ladder 8.

[0024] The controller is electrically connected to the electric telescopic pole 7, the first sensor 10, and the second sensor 11, respectively.

[0025] The working process of this utility model is as follows:

[0026] When the operator needs to climb the electric shovel, the electric telescopic rod 7 is extended by the controller, which drives the folding ladder 8 to be lowered. When the lower end of the folding ladder 8 touches the ground, the second sensor 11 receives the signal and feeds it back to the controller. The controller controls the electric telescopic rod 7 to stop extending. At this time, the folding ladder 8 is fixed and the operator can climb the ladder, then open the gate 4 to reach the platform 2, and continue to climb up the steps 3 to enter the electric shovel cab.

[0027] When the electric shovel is in operation, the controller controls the electric telescopic rod 7 to retract, driving the folding ladder 8 to rise. When the folding ladder 8 touches the limit rod 9, the first sensor 10 sends a signal back to the controller, and the controller controls the electric telescopic rod 7 to stop retracting. At this time, the folding ladder 8 is in a horizontal position, forming the working platform of the electric shovel, and the operator can walk horizontally along the folding ladder 8.

[0028] During the operation of the electric shovel, if any personnel need to get on the shovel, they should contact the shovel operator through the walkie-talkie or the bell at the tail of the shovel, ensure that the call is answered, obtain the operator's consent, and only after the operator lowers the folding ladder 8 through the controller can they get on the shovel.

[0029] When the electric shovel stops, the workers should first go down the ladder via step 3 to platform 2, open the gate 4, and then go down via folding ladder 8.

Claims

1. A loading ladder for electric shovels, characterized in that, It includes two electric telescopic poles (7), a folding ladder (8), a limit rod (9), a first sensor (10), a second sensor (11), and a controller; The original platform (2) of the electric shovel is raised to a height of 4m above the ground. One end of the platform (2) is connected to the step (3) of the electric shovel, and the other end is connected to the upper end of the folding ladder (8). Two columns (6) are vertically fixed on the platform (2) on both sides of the folding ladder (8). The tails of the two electric telescopic rods (7) are respectively hinged to the two columns (6), and the heads are respectively hinged to the drive shafts on both sides of the folding ladder (8). The limiting rod (9) is horizontally fixed on the side wall (1) of the electric shovel on one side of the folding ladder (8) and away from the platform (2). When the folding ladder (8) is in a horizontal position, the limiting rod (9) touches the folding ladder (8). The first sensor (10) is set on the limiting rod (9) at the position where it touches the folding ladder (8). The second sensor (11) is set on the bottom surface of the lower end of the folding ladder (8). The controller is electrically connected to the electric telescopic pole (7), the first sensor (10), and the second sensor (11), respectively.

2. The electric shovel loading ladder according to claim 1, characterized in that, A gate (4) is provided between the two pillars (6). The gate (4) is a one-way gate and opens towards the side of the steps (3).

3. The electric shovel loading ladder according to claim 1, characterized in that, The outer edge of the platform (2) is provided with a guardrail (5).

4. The electric shovel loading ladder according to claim 1, characterized in that, The folding ladder (8) has a handrail on its outer edge.

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