CN202011362U

CN202011362U - Foldable climbing ladder

Info

Publication number: CN202011362U
Application number: CN2011200035939U
Authority: CN
Inventors: 孙欣欣; 田静; 张晓�; 王国龙
Original assignee: Guangxi Yuchai Heavy Industry Co Ltd
Current assignee: Yuchai Pile-Driving (Changzhou) Co., Ltd.
Priority date: 2011-01-07
Filing date: 2011-01-07
Publication date: 2011-10-19
Anticipated expiration: 2021-01-07

Abstract

The utility model discloses a foldable climbing ladder, which comprises a fixed platform, a guide rail, a fixed hook, an upper folded ladder, a lower folded ladder, a split pin, a pin and a foldable ladder body. The ladder is characterized in that: the guide rail is mounted on a tire mudguard apparatus of the fixed platform; if a fixed hook is disposed, the foldable climbing ladder is fixed on the fixed hook; the upper folded ladder and the lower folded ladder are connected together by the pin and the split pin disposed there between. When used, the upper and the lower folded ladder are opened to a straight line; when not used, the lower folded ladder is folded back upward to overlap with the upper folded ladder, placed on the guide rail and fixed by the split pin and the pin. The ladder has a simple structure only including an upper ladder and a lower ladder; is used conveniently; can be folded up when not used, is convenient for storage and saves space. The utility model effectively solves the problem of difficulties of cab on a vehicle-mounted rotary digging and drilling machine.

Description

Collapsible ascending stair

Technical field

The utility model relates to a kind of ascending stair, particularly relates to a kind of vehicle-mounted rotary drilling rig ascending stair.

Background technology

The manoevreability of vehicle-mounted rotary drilling rig is good, transition is convenient, is a direction of rotary drilling rig development.The car chassis of vehicle-mounted rotary drilling rig is than crawler body height, and do not install and fix the position of ascending stair on the chassis.And the staff went up very difficulty of vehicle-mounted Spiral digging machine operator's compartment in the past, and very inconvenient, did not have ascending stair and handrail safety inadequately.This folding ascending stair has had not yet to see report.

Summary of the invention

The purpose of this utility model is to provide a kind of folding ascending stair, and ascending stair is divided into two parts up and down, and the time spent is fixed, not folding packing up of time spent.Collapsible ascending stair body has last folding step, following folding step, porose construction opening pin and bearing pin between the folding step up and down.Above the tire retaining mud device guide rail and porose and collapsible ascending stair construction opening pin and bearing pin are arranged, collapsible ascending stair body hanging hook is contained in the guide rail when not using at stay hook during use.Simple in structure, easy to use, the collapsible ascending stair of failure-free is installed.

Technical solution of the present utility model is such: a kind of collapsible ascending stair, but comprise fixed platform, tire retaining mud device, guide rail, stay hook, go up folding step, following folding step, spring cotter, bearing pin folding step body, it is characterized in that above the tire retaining mud device of fixed platform guide rail being housed, stay hook is equipped with in tire retaining mud device front, collapsible ascending stair body is equipped with folding step, time folding step, spring cotter, bearing pin.Collapsible ascending stair body hanging hook is at stay hook.

Porose construction opening pin, bearing pin between last folding step, following folding step connect.

Guide rail and porose construction opening pin, bearing pin between collapsible ascending stair body is connected.

It is hinged, overlapping to be connected with bearing pin between last folding step, the following folding step.

There is spring cotter to connect between last folding step, the following folding step.

The utility model has the advantages that: on the tire of fixed platform retaining mud device guide rail is arranged, stay hook is arranged below, collapsible ascending stair body hanging hook stay hook, collapsible ascending stair body have last folding step, time folding step, have between it spring cotter be connected with bearing pin, hinged.Open during use, regain when not using and be placed on fixing, simple in structure on the guide rail, folding and unfolding is convenient, fast, save the space, has well solved the problem of operator's compartment difficulty on the vehicle-mounted rotary drilling rig.

Description of drawings

It is such that structure of the present utility model constitutes:

Constitution diagram when Fig. 1 is of the present utility model packing up.

Constitution diagram when Fig. 2 is work of the present utility model.

Fig. 3 is a fixed platform constructional drawing of the present utility model.

Folding constructional drawing when Fig. 4 is work of the present utility model.

Fig. 5 is the constructional drawing that folds when folding of packing up of the present utility model.

Among Fig. 1～Fig. 5, fixed platform (1), collapsible ascending stair body (2), tire retaining mud device (3), guide rail (4), stay hook (5), last folding step (6), spring cotter (7), bearing pin (8), following folding step (9).

The specific embodiment

Most preferred embodiment of the present utility model is such: with reference to Fig. 1～Fig. 5, and a kind of collapsible ascending stair, but comprise fixed platform, tire retaining mud device, guide rail, stay hook, last folding step, following folding step, spring cotter, bearing pin folding step body.It is characterized in that above the tire retaining mud device of fixed platform guide rail being housed, stay hook is equipped with in tire retaining mud device front, collapsible ascending stair body is equipped with folding step, time folding step, spring cotter, bearing pin.Porose construction opening pin, bearing pin between last folding step, following folding step connect.Guide rail and porose construction opening pin, bearing pin between collapsible ascending stair body is connected.It is hinged to be connected with bearing pin between last folding step, the following folding step.There is spring cotter to connect between last folding step, the following folding step.Guide rail (4) is welded on the tire retaining mud device (3) with stay hook (5), and vehicle frame connects firmly under tire retaining mud device and the truck-mounted drilling rig.When collapsible ascending stair body (2) uses, will go up folding step (6) with spring cotter (7) and bearing pin (8) and connect by Fig. 4 with following folding step (9).Collapsible ascending stair body (2) is hung over by Fig. 2 on the stay hook (5) of fixed platform (1), and the staff just can go up operator's compartment along collapsible ascending stair climbing rig is operated.When rig transports, top two groups of spring cotters (7) and bearing pin (8) are taken off, to play folding step (9) to rotate on 180 ° of incomes in the folding step (6) around two groups of remaining bearing pins, promptly shown in Figure 5, push in the guide rail (4) carrying on the ascending stair of rolling well, to go up two holes and two alignment of a holes above the guide rail (4) above the folding step (6), folding step and guide rail (4) be fixed with two groups of spring cotters (7) that take off and bearing pin (8).During use, there are spring cotter (7), bearing pin (8) to be connected and fixed up and down between the folding step (6,9), hinged when not using by bearing pin (8), following folding step (9) is pushed to and overlapping free folding and unfolding, convenience, the purpose of safety of reaching of last folding step (6).

Claims

1. collapsible ascending stair, but comprise fixed platform, tire retaining mud device, guide rail, stay hook, go up folding step, following folding step, spring cotter, bearing pin folding step body, it is characterized in that above the tire retaining mud device (3) of fixed platform (1) guide rail (4) being housed, stay hook (5) is equipped with in tire retaining mud device (3) front, collapsible ascending stair body (2) is equipped with folding step (6), following folding step (9), spring cotter (7), bearing pin (8), and collapsible ascending stair body (2) hanging hook is in stay hook (5).

2. according to the described collapsible ascending stair of claim 1, it is characterized in that porose construction opening pin (7), bearing pin (8) between folding step (6), following folding step (9) connection.

3. according to the described collapsible ascending stair of claim 1, porose construction opening pin (7), bearing pin (8) between it is characterized in that guide rail (4) and collapsible ascending stair body (2) being connected.

4. according to the described collapsible ascending stair of claim 1, it is hinged, overlapping to it is characterized in that being connected with bearing pin (8) between folding step (6), the following folding step (9).

5. according to the described collapsible ascending stair of claim 1, its feature has spring cotter (7) to connect between last folding step (6), following folding step (9).