JPS6141636Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a step for getting on and off the driver's seat of a construction vehicle.

Because of their purpose, construction vehicles are prone to dirt and snow clinging to the drivers' shoes. The present invention is a step for lifting and lowering construction vehicles that prevents mud and snow from being carried into the driver's seat by shoes, and specifically, a low-risk, safety step that allows mud and snow to be safely removed before entering the driver's seat. It offers high steps.

That is, the step for lifting and lowering a construction vehicle according to the present invention includes a first step with a perforated rectangular upper surface located at a position equivalent to or lower than the cab floor;
A second step consisting of a pair of rectangular belt ropes, the upper surface of which is located outside and below the step and whose short side is extremely short compared to its long side; and at least one belt rope continuing below the second step. A lower step consisting of a pair of strap ropes whose upper surface is extremely short relative to the long side, and two rod-shaped supports which are held at each end of all the steps and connect each step in sequence. , below the first step,
a plate-shaped mud droplet that is formed of the upper and side outer walls of the oil tank and is integrally connected to at least the first step, and that descends toward the outside;
It is characterized by having a pair of handrails on both sides of the upper part of the step.

Here, the construction vehicle refers to a vehicle used for civil engineering work or construction work. In particular, the elevating step of the present invention can be effectively applied to a vehicle in which the frame is divided into a front frame and a rear frame, the two are joined by pins, etc., and the front frame is swingable relative to the rear frame.

Furthermore, in the case of construction vehicles, a fuel tank or a hydraulic oil tank may be provided on both sides of the rear frame in front of the rear wheels. In this case, by installing the above-mentioned tank below the lifting step and using the upper and side outer walls of the tank to remove mud from the lifting step, not only will the number of parts be reduced, but the lifting step will also serve as a protective device for the tank. , can effectively protect the tank. Furthermore, the first
A pair of handrails are provided on both sides of the top of the step, one of which extends to near the top of the driver's cab headguard, making it even safer to ascend and descend. Note that it is desirable that the handrail be inclined inward toward the frame toward the top.

Below, the first part is a side view of the construction vehicle of the example.
Fig. 2 is an enlarged perspective view of the elevating step; Fig. 3 is an enlarged perspective view of the elevating step; and Fig. 3 is an enlarged perspective view of the elevating step;
This embodiment will be explained with reference to FIG. 4, which shows the handrail as seen from the arrow B in FIG.

The construction vehicle of this embodiment is a shovel loader as shown in FIG. 1, and its frame is divided into a front frame 1 and a rear frame 2, both of which are bendably joined by a center pin. A front frame 1 has a pair of front wheels 3 on both sides thereof.
and a basket 4 (the basket body is not shown). The rear frame 2 has a pair of rear wheels 5 on both sides of its center, a power section 6 extending from the center to the rear, and a driver's cab 7 at the front. The cab 7 is box-shaped with a cab floor 71 (Fig. 3) and a head guard 72, with a seat 73 and a steering wheel 74 between them.
It is equipped with operating means such as Fuel and hydraulic oil tanks 8 are fixed on both sides of the rear frame 2 below the driver's cab 7 and in front of the rear wheels 5. As shown in an enlarged view in FIG. 2, this oil tank 8 has a constricted rear lower part 81 whose lower part is narrower than the upper part to allow the rear wheel 5 to escape, and a flat part 82 on the inside 1/3 of the upper surface. , and about 2/3 of the outside is inclined downwardly toward the outside 8
It is box-shaped. Note that the driver's cab floor 71 (FIG. 3) of the driver's cab 7 is located on the flat portion 82 of the upper surface of the oil tank 8. The lifting step 9 is fixed to the oil tank 8. This lifting step 9 is located at the same height as the cab floor 71 (see Fig. 3) and is a lattice-shaped step fixed to the upper inclined part 83 of the oil tank 8 with a predetermined gap at the upper part of the inclined part. A rectangular first step 91 with a through hole, supports 92 and 93 consisting of pipes with one end fixed to both outer ends of the first step 91 and extending downward in an inverted L shape;
3. Tie the second wire horizontally across the center of the
It consists of a step 94 and a lower step 95 connecting the lower ends of the supports 92 and 93. The first step 91 is made by welding a rectangular frame 911 with a band rope, and inside the frame 911, ribs 912a to 912d made of steel plates are welded at equal intervals parallel to the lifting direction. Note that among the ribs 912, the first rib 912a and the third rib 912c near the front end have a substantially triangular shape, and the lower end surfaces of these ribs 912a and 912c are welded to the sloped portion 83 of the upper surface of the oil tank 8. It was fixed. In addition, each rib 912a to 912
A notch into which the cross ribs 913 are fitted is formed on the upper end surface of d, and four cross ribs 91 are inserted therein.
3 are fitted in the direction orthogonal to each of the ribs 912a to 912d at equal intervals, and then fixed by welding. Note that the rear end of the first step 91 has a downwardly constricted shape similar to the rear part of the oil tank 8. The supports 92 and 93 are screwed near both outer ends of the frame 911 of the first step 91. The rear support body 92, like the rear part of the oil tank 8, is constricted downward (bent to the right in FIG. 2) and extends vertically downward. The second step 94 is constructed by welding a strap rope with both ends bent short and a rectangular strap so as to bridge the center portions of the supports 92 and 93. The lower step 95 is made by welding the bent part of a slightly deep U-shaped belt rope with both ends bent to bridge the lower ends of the supports 92 and 93, and further attaching each end of the strap to the lower part of the oil tank. It is fixed with bolts and nuts to the protrusion provided on the support body 9, and then a rectangular strap is attached to the support body 9.
No. 2,93 was welded to the opposite side of the lower end.
The cab floor 71 of this embodiment, the oil tank 8,
FIG. 3 shows the arrangement of the lifting step 9 viewed from the direction of arrow A shown in FIG.

The handrail includes a front grip 10 constructed by bending a pipe that is constructed from the front side of the head guard 72 of the driver's cab 7 to the front end of the driver's cab floor 71, and is provided rearward from the rear end of the driver's cab floor 71. It consists of a rear grip 12 which is provided on the upper part of the rear fender 11 and is made by bending a pipe into a convex shape. As is clear from FIG. 4, which shows the positional relationship of the front grip 10, rear grip 12, driver's cab 7, and rear fender 11 as viewed from arrow B in FIG.
Both the front grip 10 and the rear grip 12 have a structure that slopes outward as they extend from the top to the bottom.

The lifting step of this embodiment has the above-mentioned structure, but the same lifting step is also attached to the left side (in the direction of travel) of the shovel loader shown in FIG. 1.

When climbing up and down the elevator steps of this embodiment to enter the driver's cab 7, first place one of your right or left feet on the downward step 95 and move your body closer to the driver's cab 7, then your right hand will naturally rest at the bottom of the front grip 10. To,
The left hand reaches the bottom of the rear grip 12. Grasp each grip 10, 12 with both hands and lift the body, placing the other foot on the second step 94. At this time, both hands can be moved upward without changing the grips 10, 12, and since each grip 10, 12 is inclined toward the driver's cab 7 as it goes upwards (the fourth
(See figure) The body leans further toward the driver's cab 7, reducing the risk of falling to the opposite side. Furthermore, the second step 9
4 to the first step 91. On this first step 91, dirt and snow adhering to the soles of the shoes are removed from the ribs 91.
2a to 912d and cross ribs 913. Since the first step 91 is rectangular and has a relatively large area, it is possible to safely remove mud. The scraped mud passes through the holes between the ribs of the first step 91, falls onto the slope 83 on the top surface of the oil tank 8, slides down the slope 83, and falls on the ground along the outside of the oil tank 8. to fall. From the first step 91, proceed directly to the driver's cab floor 71.
Since mud and the like from the soles of the shoes are scraped off in the first step 91, there is less chance of soiling the driver's cab 7. When getting off the driver's cab 7, use the driver's cab floor 71.
From there, exit to the first step 91 facing forward. This first
Rotate 180 degrees on the step 91 to face the driver's cab 7, grasp each grip 10, 12 with both hands,
While proceeding backwards, descend to the second step 94.
Note that since the second step 94 is located outside the first step 91, the position of the second step 94 can be visually confirmed. Then from the second step 94 to the lower step 95 and then down to the ground. In this way, when getting off the vehicle, the person getting off can safely change direction on the wide first step 91, and the transition from the first step 91 to the second step 94 can be felt not only with the foot but also with the eye. Therefore, the driver can safely get down from the driver's cab 7 to the ground.

In this embodiment, each step 91, 94 and 9
The upper surface of 5 was formed from the end surface of the strap, but as shown in Figures 5, 6 and 7, it was made of a steel bar with a protrusion on the top to prevent slipping, and a steel bar with unevenness running in a helical direction on the surface. Alternatively, each step may be formed of a steel material having an uneven upper surface, such as a belt rope having an uneven end surface. In this case, slipping on the steps can be further prevented. In addition, the first step 91
An anti-slip effect can be expected even if a step is formed on the upper surface of the frame 911 and the ribs 912a to 912d, that is, the upper surface of the rib is formed at a lower position than the upper surface of the frame.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway side view of a construction vehicle with lifting steps, which is an embodiment of the present invention.
Figure 3 is an enlarged perspective view of the lifting step shown in Figure 1.
Diagram 4 showing the positional relationship between the lifting step, oil tank, and cab floor as seen from arrow A shown in the figure.
The figures are diagrams showing the positional relationship between the handrail and the driver's cab as seen from the B arrow shown in Figure 1, Figures 5, 6 and 7.
The figure is a partial perspective view of a step material designed to prevent slipping. In the figure, 1 is the front frame, 2 is the rear frame, 3 is the front wheel, 4 is the bucket, 5 is the rear wheel, 6 is the power section, 7 is the driver's cab, 8 is the oil tank, 9 is the lifting step, 10
12 indicates the front grip, and 12 indicates the rear grip.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A first step with a perforated rectangular upper surface located at a position equal to or lower than the cab floor, and an upper surface located outside and below the first step with respect to the long side. a second step consisting of a pair of belt ropes formed in a rectangular shape with extremely short short sides; and at least one belt rope continuing below the second step.
A lower step consisting of a pair of strap ropes each having a rectangular upper surface whose short side is extremely short compared to its long side; a rod-shaped support, and an upper and side outer wall of an oil tank that is below the first step and is integrally connected to the first step with a gap formed between the oil tank and the first step. 1. A step for raising and lowering a construction vehicle, characterized in that the step is comprised of a mud remover that descends toward the outside of the first step, and a pair of handrails provided on both sides of the upper part of the first step. (2) The step for lifting and lowering a construction vehicle as set forth in claim 1 of the utility model registration claim, in which one of the pair of handrails extends close to the upper end of the head guard.