Vehicle top climbing ladder installed on one side of spare tire support

Abstract

The utility model discloses a vehicle climbing ladder installed on one side of a spare tire support, which comprises an upper fixed ladder assembly and a lower turnover ladder assembly, the upper fixed ladder assembly comprises upper grab rails on two sides, a plurality of pairs of support pipe welding parts and a plurality of pedal welding parts, and the lower turnover ladder assembly comprises a lower grab rail and a plurality of pedal welding parts. The lower end of the upper grab rail is hinged to the upper end of the lower transverse pin grab rail. When the lower overturning ladder frame is overturned upwards and stored, the locking devices arranged on the two sides of the lower portion of the upper grab rail are locked to the upper portions of the straight rods of the lower grab rail respectively. The turnover ladder frame does not occupy precious space of the tail and the side face of the square cabin, is simple in structure and low in manufacturing cost, can quickly and conveniently achieve downward turnover use of the lower turnover ladder frame and upward turnover locking on the outer side of the lower grab rail, and can be widely applied to top climbing of various special vehicles.

Description

Technical Field

[0001] The utility model relates to a vehicle boarding ladder, in particular to a vehicle boarding ladder that does not occupy the outer space of the cabin, belonging to the technical field of special vehicle accessories. Background Art

[0002] In order not to occupy the precious space outside the vehicle, the spare tire bracket for installing the spare tire is usually arranged between the cab and the end face of the adjacent cabin, or installed on the lower side of the tail of the vehicle chassis beam. Installation and maintenance personnel need to use a boarding ladder to climb onto the top of the cabin for the installation, maintenance and repair of the cabin top equipment. The existing cabin boarding ladders are generally installed at the tail or side of the cabin. However, when the cabin door, toolbox and interface box need to be set at the tail or side of the cabin respectively, the cabin boarding ladder cannot be installed at the tail or side of the cabin. Therefore, it is necessary to develop a vehicle boarding ladder installed in other places of the special vehicle. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a vehicle boarding ladder with a simple structure, which is quickly and conveniently deployed and stored, and is installed on the side of the spare tire bracket.

[0004] The utility model is realized through the following technical solutions:

[0005] A vehicle boarding ladder installed on one side of the spare tire bracket includes an upper fixed ladder frame and a lower flip-up ladder frame. The upper fixed ladder frame includes upper handrails on both sides, several pairs of support pipe assemblies and several pedal assemblies. The upper handrails are curved steel pipes into a curved rod with an upper inclination, a lower verticality and an inverted V-shaped top. The two ends of several pedal assemblies arranged at equal intervals up and down are respectively welded to the inner sides of the upper handrails; The support pipe assemblies in groups of two are respectively arranged at equal intervals up and down along the length direction of the upper handrail. One end of the support pipe assembly is respectively welded and fixed on the side of the upper handrail facing the spare tire bracket, and the other end of the support pipe assembly is respectively fixed on the side of the adjacent spare tire bracket; The lower flip-up ladder frame includes a lower handrail and several pedal assemblies. The lower handrail is curved into a U shape by a steel pipe. The two ends of several pedal assemblies arranged at equal intervals up and down are respectively welded to the inner sides of the lower handrail. A rectangular pedal assembly perpendicular to the lower handrail is welded in the center of the bottom of the lower handrail; The upper hinge seats are respectively welded and fixed on one side of the lower end of the upper handrail, the lower hinge heads are respectively welded and fixed on the upper ends of the lower handrail, and the cross pins respectively pass through the upper hinge seats and the lower hinge heads, so that the lower ends of the upper handrails are respectively hinged to the upper ends of the lower handrails; When the lower flip-up ladder frame is turned up and stored, the locking devices arranged on both sides of the lower part of the upper handrail are respectively locked on the upper part of the straight rod of the lower handrail.

[0006] The purpose of the utility model can also be further realized by the following technical measures.

[0007] Further, the support pipe assembly weldment includes straight pipes, flanges and connecting plates. One ends of several pairs of straight pipes arranged at intervals up and down are respectively welded to corresponding positions on the upper handrail rod, and the other ends of the straight pipes are respectively welded to the flanges. The flanges are respectively fixed on the connecting plates, and the connecting plates are respectively welded and fixed to corresponding positions on one side of a spare tire bracket formed by rectangular steel pipes.

[0008] Further, the lock includes a mounting plate, an elastic locking pin and a hook plate. One ends of the horizontally arranged mounting plates are respectively welded and fixed to the outer sides of the lower parts of the upper handrail rods. The upper ends of the vertically arranged elastic locking pins are respectively fixed to the lower sides of the other ends of the mounting plates. The lower end of the pin body of the elastic locking pin is fixedly connected to one end of the horizontally arranged hook plate. When the lower folding ladder is folded and stored, the other ends of the hook plates are respectively locked to the upper parts of the straight rods of the lower handrail rod.

[0009] Further, the pedal assembly weldment includes pedals and lower support rods. The aspect ratio of the length to the width of the pedal is L / B = 9 - 11. The cross-section of the pedal is a hollow rectangle. A row of multiple upward-turning holes are evenly distributed on the upper side of the pedal. The lower support rods are respectively welded and fixed to both sides of the pedal in the width direction. Both ends of the pedal and both ends of the lower support rods are respectively welded and fixed to the inner sides of the upper handrail rod and the inner side of the lower handrail rod at equal intervals.

[0010] Further, the rectangular pedal assembly includes a rectangular pedal and a U-shaped steel pipe. A plurality of rows of upward-turning holes are evenly distributed on the upper side of the rectangular pedal. One side of the rectangular pedal is welded and fixed to the bottom cross bar of the lower handrail rod and is parallel to the pedal assembly weldment. Both ends of the U-shaped steel pipe are respectively welded to the middle of the bottom cross bar. The other three sides of the rectangular pedal are welded and fixed to the inner side of the U-shaped steel pipe.

[0011] The utility model adopts a structure in which the upper fixed ladder and the lower folding ladder are hinged, and the upper fixed ladder is fixed to the side of the spare tire bracket, without occupying the precious space at the tail and side of the shelter. The structure is simple, the manufacturing cost is low, and it can quickly and conveniently realize the downward turning and use of the lower handrail rod and the upward turning and locking outside the lower handrail rod, and can be widely applied to the ascent of various special vehicles.

[0012] The advantages and features of the utility model will be illustrated and explained by the following non-limiting description of the preferred embodiments, which are given only as examples with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a perspective view of the utility model mounted on the spare tire bracket;

[0014] Figure 2 is a perspective view of the upper fixed ladder;

[0015] Figure 3 is a perspective view of the lower folding ladder;

[0016] Figure 4 Yes Figure 2 is the enlarged view of part Ⅰ of Specific implementation mode

[0017] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0018] As Figures 1 to 3 shown, this embodiment includes an upper fixed ladder frame 1 and a lower flip ladder frame 2. The upper fixed ladder frame 1 includes upper handrail rods 11 on both sides, 3 pairs of support pipe assemblies 12 and 5 pedal assemblies 13. The upper handrail rods 11 are made of steel pipes bent into curved rods with an upper inclination, a lower verticality, and an inverted V-shaped top. The two ends of 4 pedal assemblies 13 arranged at equal intervals up and down are respectively welded to the inner sides of the upper handrail rods 11. Figure 1 The spare tire 5 in the middle is fixed in a spare tire bracket 4 made of rectangular steel pipes welded together.

[0019] The support pipe assemblies 12 in pairs are respectively arranged at intervals up and down along the length direction of the upper handrail rods 11. The right ends of the support pipe assemblies 12 are respectively welded and fixed on one side of the upper handrail rods 11 facing the spare tire bracket 3, and the left ends of the support pipe assemblies 12 are respectively fixed on the side surfaces of the adjacent spare tire brackets 4.

[0020] The support pipe assembly 12 includes a straight pipe 121, a flange 122, and a connecting plate 123. One ends of 3 pairs of straight pipes 121 arranged at intervals up and down are respectively welded to the corresponding positions on the upper handrail rods 11. The other ends of the straight pipes 121 are respectively welded to the flanges 122. The flanges 122 are fixed to the connecting plates 123 by fastening screws. The connecting plates 123 are respectively welded and fixed to the corresponding positions on the right side of the spare tire bracket 4 made of rectangular steel pipes welded together. Such a structure significantly improves the installation efficiency of the present utility model on the spare tire bracket 4.

[0021] The lower flip ladder frame 2 includes a lower handrail rod 21 and 3 pedal assemblies 13. The lower handrail rod 21 is made of a steel pipe bent into a U shape. The two ends of 3 pedal assemblies 13 arranged at intervals up and down are respectively welded to the inner side of the lower handrail rod 21. A rectangular pedal assembly 23 perpendicular to the lower handrail rod 21 is welded to the center of the bottom of the lower handrail rod 21.

[0022] The upper hinge seats 14 are respectively welded and fixed on one side of the lower ends of the upper handrail rods 11. The lower hinge heads 22 are respectively welded and fixed on the upper ends of the lower handrail rod 21. The cross pins 15 respectively pass through the upper hinge seats 14 and the lower hinge heads 22, so that the lower ends of the upper handrail rods 11 are respectively hinged to the upper ends of the lower handrail rods 21. When the lower flip ladder frame 2 is turned up and stored, the locks 3 arranged on both sides of the lower part of the upper handrail rod 11 are respectively locked on the upper part of the straight rod 211 of the lower handrail rod 21.

[0023] As Figure 2 and Figure 4As shown, the locker 3 includes a mounting plate 31, an elastic locking pin 32 and a hook plate 33. One end of the horizontally arranged mounting plate 31 is welded and fixed to the outer side of the lower part of the upper handrail 11 respectively. The upper ends of the vertically arranged elastic locking pins 32 are fixed to the lower side of the other end of the mounting plate 31 respectively. The lower end of the pin body 321 of the elastic locking pin 32 is fixedly connected to one end of the horizontally arranged hook plate 33. When the lower flipping ladder 2 is flipped and stored, the hook plate 33 is pulled down until the rectangular locking block 322 at the lower end of the pin body 321 moves down and disengages from the pin housing locking groove 323, and the elastic locking pin 32 is unlocked. Then the other ends of the hook plate 33 can be rotated respectively to buckle the upper part of the straight rod 211 of the lower handrail 21, and the rectangular locking block 322 is aligned with the pin housing locking groove 323. The hook plate 33 is released, and the pin body 321 moves upward under the action of the spring return force, and the rectangular locking block 322 falls into the pin housing locking groove 323, so that the head of the hook plate 33 is locked to the upper part of the straight rod 211 of the lower handrail 21, and the lower flipping ladder 2 stacked outside the upper flipping ladder 1 is reliably locked. When the lower flipping ladder 2 is turned down and unfolded for use, the above-mentioned unlocking action of the elastic locking pin 32 is repeated, and the hook plate 33 is turned away from the lower handrail 21, and the lower flipping ladder 2 can be rotated clockwise around the axis of the cross pin 15 until the upper end of the straight rod 211 of the lower handrail 21 abuts against the lower end of the upper handrail 11, and then the top of the cabin can be climbed using the present utility model, which is very fast and convenient.

[0024] As Figure 2 and Figure 3 shown, the pedal group weldment 13 includes a pedal 131 and a lower support rod 132. In this embodiment, the aspect ratio of the length to the width of the pedal 131: L / B = 10, which increases the width of the pedal 131 and improves the comfort of the climber stepping and climbing. The cross-section of the pedal 131 is a hollow rectangle formed by bending and welding a steel plate. A row of multiple upward-turning holes 133 are evenly distributed on the upper side of the pedal 131, which increases the friction between the soles of the climbers and the pedal 131 and ensures the safety of the climbers. The lower support rods 132 are welded and fixed to the lower sides on both sides of the pedal 131 in the width direction respectively, which significantly improves the strength and stiffness of the pedal group weldment 13. The two ends of the evenly distributed pedal 131 and the two ends of the lower support rods 132 are welded and fixed to the inner side of the upper handrail 11 and the inner side of the lower handrail 21 at intervals respectively.

[0025] The rectangular pedal group weldment 23 includes a rectangular pedal 231 and a U-shaped steel pipe 232. A plurality of upward-turning holes 133 are evenly distributed in several rows on the upper side of the rectangular pedal 231. One side of the rectangular pedal 231 is welded and fixed to the bottom cross bar 212 of the lower handrail 21 and is parallel to the pedal group weldment 13. The two ends of the U-shaped steel pipe 232 are welded to the middle of the bottom cross bar 212 respectively. The other three sides of the rectangular pedal 231 are welded and fixed to the inner side of the U-shaped steel pipe 232. The rectangular pedal group weldment 23, as the first step for the climber to step on and climb in the present utility model, provides a reliable and stable support for the climber.

[0026] In addition to the above embodiments, the present utility model may also have other embodiments. Any technical solutions formed by equivalent replacement or equivalent transformation shall fall within the protection scope required by the present utility model.

Claims

1. A vehicle climbing ladder installed on one side of a spare tire bracket, characterized in that: The upper fixed ladder frame and the lower flip ladder frame are included. The upper fixed ladder frame includes upper handrails on both sides, several pairs of support tube weldments and several pedal weldments. The upper handrail is made of steel pipe bent into a curved rod with an inclined upper portion, a vertical lower portion and an inverted V-shaped top. The two ends of several pedal weldments evenly spaced up and down are respectively welded to the inner side of the upper handrail; two groups of support tube weldments are respectively spaced up and down along the length direction of the upper handrail, one end of the support tube weldment is respectively welded and fixed on the side of the upper handrail facing the spare tire bracket, and the other end of the support tube weldment is respectively fixed on the side of the adjacent spare tire bracket; the lower flip ladder frame includes A lower handrail and several pedal welded parts, wherein the lower handrail is made of a steel pipe bent into a U shape, and the two ends of several pedal welded parts evenly spaced up and down are respectively welded to the inner side of the lower handrail, and a rectangular pedal welded part perpendicular to the lower handrail is welded to the center of the bottom of the lower handrail; the upper hinge seats are respectively welded and fixed on one side of the lower end of the upper handrail, and the lower hinge joints are respectively welded and fixed on the upper end of the lower handrail, and the cross pins respectively cross the upper hinge seat and the lower hinge joint, so that the lower end of the upper handrail is respectively hinged to the upper end of the lower handrail; when the lower flip ladder frame is flipped up for storage, the lockers arranged on both sides of the lower part of the upper handrail are respectively locked on the upper part of the straight rod of the lower handrail.

2. The vehicle climbing ladder installed on one side of the spare tire bracket according to claim 1, characterized in that: The support tube assembly weldment includes a straight tube, a flange and a connecting plate. One end of several pairs of straight tubes arranged at intervals up and down are respectively welded to the corresponding positions of the upper handrail rod, and the other ends of the straight tubes are respectively welded to the flanges. The flanges are respectively fixed on the connecting plates, and the connecting plates are respectively welded and fixed to the corresponding positions on one side of the spare tire bracket welded from a rectangular steel pipe.

3. The vehicle climbing ladder installed on one side of the spare tire bracket according to claim 1, characterized in that: The locker includes a mounting plate, an elastic locking pin and a hook plate. One end of the horizontally arranged mounting plate is welded and fixed to the lower outer side of the upper handrail rod, the upper ends of the vertically arranged elastic locking pins are fixed to the lower side of the other end of the mounting plate, and the lower end of the pin body of the elastic locking pin is fixedly connected to one end of the horizontally arranged hook plate; when the lower flip ladder frame is flipped and stored, the other end of the hook plate is locked to the upper part of the straight rod of the lower handrail rod.

4. The vehicle climbing ladder installed on one side of the spare tire bracket according to claim 1, characterized in that: The pedal assembly weldment includes a pedal and a lower support rod. The length-to-width ratio of the pedal is: L / B=9~11. The cross-section of the pedal is a hollow rectangle. A row of multiple upturned holes are evenly distributed on the upper side of the pedal. The lower support rods are welded and fixed on both sides of the pedal in the width direction. The two ends of the pedal and the two ends of the lower support rod are evenly welded and fixed on the inner side of the upper handrail rod and the inner side of the lower handrail rod.

5. The vehicle climbing ladder installed on one side of the spare tire bracket according to claim 1, characterized in that: The rectangular pedal assembly weldment includes a rectangular pedal and a U-shaped steel pipe. Several rows of multiple upward-turned holes are evenly distributed on the upper side of the rectangular pedal. One side of the rectangular pedal is welded and fixed to the bottom cross bar of the lower handrail rod and is parallel to the pedal assembly weldment; the two ends of the U-shaped steel pipe are respectively welded to the middle part of the bottom cross bar, and the other three sides of the rectangular pedal are welded and fixed to the inner side of the U-shaped steel pipe.

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