Folding ladder for mining dump truck

Abstract

The technical problem to be solved by the utility model is to overcome the defects in the prior art and provide the folding pedaling ladder for the mining dump truck. The pedaling ladder comprises a mounting frame, pedals, a connecting assembly and a driving assembly, the mounting frame is mounted on one side of the mining dump truck and comprises a flat plate with left and right side edges and a vertical plate positioned behind the flat plate and fixedly connected with the flat plate; the connecting assembly comprises a short connecting rod and a long connecting rod; the pedals are sequentially arranged from top to bottom, the two sides of the pedal at the top end are fixedly connected with the side edges of the flat plate, and each pedal is rotationally connected with the corresponding pedal below the pedal through a long connecting rod. The top end pedal is rotationally connected with the adjacent pedal below through a short connecting rod, and the bottom end pedal is rotationally connected with the adjacent pedal above through a short connecting rod; the driving assembly is a hydraulic rod, one end of the hydraulic rod is hinged to the inner side of the vertical plate, and the other end of the hydraulic rod is hinged to the pedal. According to the utility model, the simple rotating rod is matched with the connecting rod, so that the later overhaul and maintenance are more convenient.

Description

Technical Field

[0001] This utility model belongs to the field of mining machinery technology, and in particular relates to a folding ladder for a mining dump truck. Background Technology

[0002] Mining dump trucks are important transportation equipment in open-pit mining. They are taller and larger than ordinary heavy trucks. They are usually loaded with large electric shovels or hydraulic shovels and travel between the mining point and the unloading point. Because mining dump trucks are taller and larger than ordinary heavy trucks, drivers need to install additional step ladders when getting on and off the vehicle.

[0003] Chinese patent CN214084052U discloses a folding ladder for a mining dump truck. The folding ladder includes two opposing side plates and a multi-stage foot pedal connected between the two side plates. A small platform for mounting the folding ladder is fixed to the frame of the mining dump truck. The small platform contains a drive mechanism for rotating the fixed plate and the folding ladder together. This folding ladder uses a driven gear, a driving sprocket, a transmission chain, and a driven sprocket to drive the foot pedals to rise and fall with the rotation of the folding ladder, changing their angle to retract. However, its complex structure with multiple gears and sprockets results in high maintenance requirements and thus has certain limitations. Summary of the Invention

[0004] The technical problem this invention aims to solve is to overcome the shortcomings of existing technologies and provide a folding ladder for mining dump trucks. This invention employs a simple drive assembly and connecting rod, making subsequent inspection and maintenance more convenient.

[0005] A folding ladder for a mining dump truck includes: a mounting frame, a step, a connecting assembly, and a drive assembly;

[0006] The mounting frame is installed on one side of the mining dump truck and includes a flat plate with left and right side edges and a vertical plate located behind the flat plate and fixedly connected to the flat plate.

[0007] The connecting assembly includes a short link and a long link;

[0008] The pedals are several in number and arranged sequentially from top to bottom. The two sides of the top pedal are fixedly connected to the side edge of the plate. Each pedal is rotatably connected to the pedal one step below it through a long connecting rod. The top pedal is rotatably connected to the pedal adjacent to it below it through a short connecting rod, and the bottom pedal is rotatably connected to the pedal adjacent to it above it through a short connecting rod.

[0009] The drive assembly is a hydraulic rod, with one end hinged to the inside of the vertical plate and the other end hinged to the pedal.

[0010] Furthermore, in the aforementioned folding ladder for mining dump trucks, the top step is provided with a horizontally fixed rod that enters from one side and exits from the other side, so that the two sides of the top step are fixedly connected to the side edges of the mounting frame plate through the fixed rod.

[0011] Furthermore, in the aforementioned mining dump truck folding ladder, each step and the step one step below it have a long connecting rod with one end located at the front of the upper step and the other end located at the rear of the lower step.

[0012] Furthermore, in the aforementioned mining dump truck folding ladder, the short connecting rod between the top step and the adjacent step below it is located at the middle of the top step and at the rear of the adjacent step below.

[0013] Furthermore, in the aforementioned folding ladder for mining dump trucks, the short connecting rod between the bottom pedal and the adjacent pedal above it has one end located in the middle of the bottom pedal and the other end located in front of the adjacent pedal above.

[0014] Furthermore, the aforementioned mining dump truck folding ladder has two hydraulic rods. One end of each hydraulic rod is hinged to the inside of the mounting frame vertical plate, and the other end of each hydraulic rod is hinged to both sides of the rear of the same step.

[0015] Furthermore, the top surface of the folding steps of the aforementioned mining dump truck is provided with anti-slip texture, and the top surface of the mounting frame is provided with foot pads, which are also provided with anti-slip texture.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. This utility model, by setting up a connecting component and a driving component, enables the hydraulic rod to drive the pedal to move horizontally along the rotation trajectory of the long or short connecting rod when it extends or retracts, thereby controlling the raising and lowering of the pedal and making it easier for users to get on and off the mining dump truck by stepping on the pedal.

[0018] 2. This utility model uses a simple drive assembly and connecting rod, which makes subsequent inspection and maintenance more convenient. Attached Figure Description

[0019] Figure 1 This is a side view of a folding ladder on a mining dump truck.

[0020] Figure 2 This is a front view of the folding ladder of a mining dump truck.

[0021] Figure 3 for Figure 2 A cross-sectional view along the AA direction.

[0022] Among them, there are flat plate 101, vertical plate 102, foot pad 103, side edge 104, pedal 2, short connecting rod 301, long connecting rod 302, hydraulic rod 4, and fixing rod 5. Detailed Implementation

[0023] Example

[0024] A folding ladder for a mining dump truck includes: a mounting frame, a step 2, a connecting assembly, and a drive assembly;

[0025] The mounting frame is installed on one side of the mining dump truck and includes a flat plate 101 with left and right side edges 104 and a vertical plate 102 located behind the flat plate and fixedly connected to the flat plate.

[0026] The connecting assembly includes a short connecting rod 301 and a long connecting rod 302;

[0027] The pedals are arranged sequentially from top to bottom. The top pedal has a fixing rod 5 that passes through one side and exits from the other side, so that the two sides of the top pedal are fixedly connected to the side edge of the flat plate by the fixing rod. In this embodiment, there are two fixing rods. Each pedal is rotatably connected to the pedal one step below it through a long connecting rod, and the top pedal is rotatably connected to the adjacent pedal below it through a short connecting rod. The bottom pedal is rotatably connected to the adjacent pedal above it through a short connecting rod. The long connecting rod between each pedal and the pedal one step below it has one end set at the front of the upper pedal and the other end set at the rear of the lower pedal. The short connecting rod between the top pedal and the adjacent pedal below it has one end set at the middle of the top pedal and the other end set at the rear of the adjacent lower pedal. The short connecting rod between the bottom pedal and the adjacent upper pedal has one end set at the middle of the bottom pedal and the other end set at the front of the adjacent upper pedal. The top surface of each pedal is provided with anti-slip texture, and the top surface of the mounting frame is provided with a foot pad 103, which is also provided with anti-slip texture.

[0028] The drive assembly is a hydraulic rod 4, which consists of two hydraulic rods. One end of each hydraulic rod is hinged to the inner side of the vertical plate, and the other end of each hydraulic rod is hinged to both sides of the rear of the same pedal. In this embodiment, they are connected to both sides of the rear of the second pedal.

[0029] The method of using this utility model is as follows:

[0030] The ladder mounting bracket is installed on one side of the mining dump truck. When the driver needs to use the ladder to get on or off the truck, the ladder needs to be extended by pulling outwards on the pedals hinged to hydraulic rods. In this embodiment, the second pedal is pulled outwards. With the assistance of the hydraulic rods, the pedals move outwards, and under the constraint of the connecting assembly, the pedals move horizontally along the rotation trajectory of the connecting assembly. When the connecting assembly reaches a vertical position, the ladder is fully extended, and the driver can then use it to get on or off. When the ladder needs to be retracted, the pedals hinged to hydraulic rods are pushed inwards. In this embodiment, the second pedal is pushed inwards. With the assistance of the hydraulic rods, the pedals move horizontally along the rotation trajectory of the connecting assembly, and all the pedals are retracted together, completing the ladder retraction.

Claims

1. A folding step ladder for a mining dump truck, characterised in that, The utility model relates to a kind of installation frame, pedal, connecting assembly and drive assembly. The installation frame is installed on one side of mine dump truck, including flat plate with left and right side along and vertical plate located behind flat plate and fixedly connected with flat plate. The connecting assembly includes short connecting rod and long connecting rod. The pedal is several, arranged from top to bottom in sequence, and the top end pedal is fixedly connected with the side along of flat plate, each pedal is rotatably connected with the pedal separated by one below it by long connecting rod, and the top end pedal is rotatably connected with the pedal adjacent below it by short connecting rod, and the bottom end pedal is rotatably connected with the pedal adjacent above it by short connecting rod. The drive assembly is hydraulic rod, one end of hydraulic rod is hinged to the inner side of vertical plate, and the other end is hinged to the pedal. The top end pedal is provided with horizontal fixed rod penetrating from one side and going out from the other side of pedal, so that the two sides of top end pedal are fixedly connected with the side along of installation frame flat plate by fixed rod.

2. The mining dump truck fold-down step as claimed in claim 1, characterized in that, The long connecting rod between each pedal and the pedal separated by one below it is arranged at the front of the pedal above in one end and at the rear of the pedal below in the other end.

3. The mining dump truck fold-down step as set forth in claim 1, wherein, The short connecting rod between top end pedal and the pedal adjacent below it is arranged at the middle of top end pedal in one end and at the rear of the pedal below in the other end.

4. The mining dump truck fold-down step as set forth in claim 1, wherein, The short connecting rod between bottom end pedal and the pedal adjacent above it is arranged at the middle of bottom end pedal in one end and at the front of the pedal above in the other end.

5. The mining dump truck fold-down step as set forth in claim 1, wherein, The hydraulic rod is two, one end of two hydraulic rods is respectively hinged to the inner side of installation frame vertical plate, and the other end of two hydraulic rods is hinged to the rear of the same pedal on two sides.

6. The mining dump truck fold-down step as set forth in claim 1, wherein, The top surface of pedal is provided with anti-skid lines, and the top surface of installation frame is provided with foot pad, and the foot pad is provided with anti-skid lines.

7. The mining dump truck fold-down step as set forth in claim 1, wherein, ​

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