Vibration-resistant special vehicle cab slide

Abstract

The utility model relates to a vibration-resistant special vehicle cab slide, which comprises a vehicle body, an L-shaped guide rail, a vehicle ladder and a rolling component, the L-shaped guide rail is a square tube, the lower part of the L-shaped guide rail is slotted, and the L-shaped guide rail is welded with the vehicle body; the rolling assembly extends out of the L-shaped guide rail and is connected with the box step, the rolling assembly comprises a gland, a large stainless steel bead, a small stainless steel bead, a roller body, a thrust bearing straining ring piece, a thrust bearing turnbuckle ball, a rolling bearing and an internal thread bushing, the rolling bearing is arranged between a notch of the L-shaped guide rail and the roller body, the roller body is provided with a groove, and the groove is connected with the thrust bearing straining ring piece. A large stainless steel ball is placed in the groove and limited through a gland, and an inner threaded sleeve is arranged between the rolling bearing and the box step.

Description

Technical Field

[0001] The utility model relates to the technical field of the body of special vehicles, in particular to a vibration-resistant slide ladder for the cab of a special vehicle. Background Art

[0002] The pedal ladder is an important accessory for the cab of a special vehicle, which plays a role in allowing personnel to get on and off the vehicle and repair the equipment on the roof. Most modern special vehicle cabs are equipped with a sliding pedal ladder, aiming to facilitate the storage of the pedal ladder so as to meet the passing performance requirements of the special vehicle. As Figure 6 shown, since most sliding pedal ladders use rollers 55 as movable components and rely on the rollers to reduce the movement resistance of the pedal ladder, the roller structure is prone to damage when the special vehicle passes through a rough road surface, resulting in the sliding of the pedal ladder being stuck and generating abnormal noises. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a vibration-resistant slide ladder for the cab of a special vehicle. Through the large stainless steel balls, small stainless steel balls and thrust bearings on the rolling component, rolling contact is formed between the rolling component and the upper and lower surfaces of the L-shaped guide rail; in addition, the rolling component is provided with a rolling bearing, so that rolling contact is also formed between the rolling component and the notch of the L-shaped guide rail. The above measures avoid abnormal noises generated by friction between the rolling component and the L-shaped guide rail, and effectively improve the stability and use experience of the sliding pedal ladder under vibration conditions.

[0004] A vibration-resistant slide ladder for the cab of a special vehicle, comprising a vehicle body, an L-shaped guide rail, a vehicle ladder and a rolling component. The L-shaped guide rail is a square tube, with a groove opened at the lower part and welded to the vehicle body; the rolling component extends outside the L-shaped guide rail and is connected to the vehicle ladder. The rolling component includes a gland, large stainless steel balls, small stainless steel balls, a roller body, a thrust bearing retaining ring piece, a thrust bearing cage ball, a rolling bearing and an internal thread sleeve. A rolling bearing is provided between the notch of the L-shaped guide rail and the roller body. The roller body is provided with a groove, and large stainless steel balls are placed in the groove. The large stainless steel balls are limited by the gland. An internal thread sleeve is provided between the rolling bearing and the vehicle ladder.

[0005] Preferably, a plurality of small stainless steel balls are provided between the large stainless steel balls and the bottom wall of the groove of the roller body.

[0006] Preferably, thrust bearing cage balls are provided between the step of the roller body and the inner wall of the L-shaped guide rail.

[0007] Preferably, thrust bearing retaining ring pieces are provided between the thrust bearing cage balls and the step of the roller body.

[0008] Preferably, locking members are respectively provided on the side wall and the rear wall of the vehicle body.

[0009] Preferably, the roller body is connected to the vehicle ladder through a nut.

[0010] Preferably, a spring washer is provided between the nut and the ladder.

[0011] Preferably, a split pin is provided on the nut.

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

[0013] 1. The stability of the pedal ladder during operation is high. Under the condition of ensuring smooth operation of the sliding pedal ladder, abnormal noises caused by friction are avoided, effectively improving the stability and user experience of the sliding pedal ladder.

[0014] 2. It has a long service life. For the vibration working conditions of special vehicles, a rolling component including large (small) stainless steel balls and rolling bearings is used as the movable component of the ladder, reducing wear and improving the reliability of the movable component. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a schematic structural diagram of the side-mounted state of the slide;

[0017] Figure 3 is a schematic structural diagram of the rear-mounted state of the slide;

[0018] Figure 4 is Figure 2 a sectional view taken along line B-B of

[0019] Figure 5 is Figure 4 an enlarged view of part C of

[0020] Figure 6 is a schematic structural diagram of a roller assembly in the prior art;

[0021] As shown in the figure: 1, vehicle body; 2, L-shaped guide rail; 3, ladder; 4, rolling component; 4-1, gland; 4-2, large stainless steel ball; 4-3, small stainless steel ball; 4-4, roller body; 4-5, thrust bearing retaining ring; 4-6, thrust bearing cage ball; 4-7, rolling bearing; 4-8, internal thread sleeve; 4-9, spring washer; 4-10, nut; 4-11, split pin; 5, locking member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present method will be further described in conjunction with the accompanying drawings and embodiments. Although the description is clear and complete, it is obvious that the described embodiments are only a part of the embodiments of the present method, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present method without creative efforts fall within the scope of protection of the present method.

[0023] As Figure 1 A vibration-resistant special vehicle cab slide as shown in Fig. -5 includes a vehicle body 1, an L-shaped guide rail 2, a vehicle ladder 3, a rolling component 4, and a locking member 5. The L-shaped guide rail 2 is a square pipe with a lower groove and is welded to the vehicle body 1. The vehicle ladder 3 is a welded aluminum round pipe. The rolling component 4 extends outside the L-shaped guide rail 2 and is connected to the vehicle ladder 3. Locking members 5 are respectively arranged on the side wall and the rear wall of the vehicle body 1 for positioning the vehicle ladder 3.

[0024] The rolling component 4 includes a gland 4-1, large stainless steel balls 4-2, small stainless steel balls 4-3, a roller body 4-4, a thrust bearing retaining ring 4-5, a thrust bearing cage ball 4-6, a rolling bearing 4-7, and an internal thread sleeve 4-8. A rolling bearing 4-7 is arranged between the groove of the L-shaped guide rail 2 and the roller body 4-4. The roller body 4-4 is provided with a groove which is spherical. Large stainless steel balls 4-2 are placed in the groove. The large stainless steel balls 4-2 are in sliding contact with the inner side wall of the L-shaped guide rail 2. A plurality of small stainless steel balls 4-3 are arranged between the large stainless steel balls 4-2 and the bottom wall of the groove of the roller body 4-4. The large stainless steel balls 4-2 are limited by the gland 4-1. A thrust bearing cage ball 4-6 is arranged between the step of the roller body 4-4 and the inner wall of the L-shaped guide rail 2. A thrust bearing retaining ring 4-5 is arranged between the thrust bearing cage ball 4-6 and the step of the roller body 4-4. An internal thread sleeve 4-8 is arranged between the rolling bearing 4-7 and the vehicle ladder 3.

[0025] The roller body 4-4 is connected to the vehicle ladder 3 through a nut 4-10. A spring washer 4-9 is arranged between the nut 4-10 and the vehicle ladder 3. An opening pin 4-11 is arranged on the nut 4-10. The rolling component 4 is connected and fixed to the vehicle ladder 3 through the spring washer 4-9, the nut 4-10, and the opening pin 4-11.

[0026] The utility model meets the function of getting on and off the vehicle of the special vehicle cab and takes into account the passing performance requirements of the special vehicle. Its feature is that the rolling contact exists between the rolling component 4 and the L-shaped guide rail 2. Moreover, the rolling component 4 is provided with a rolling bearing 4-7, which avoids abnormal noise and wear caused by friction with the groove of the L-shaped guide rail 2, and effectively improves the stability and use feeling of the sliding ladder.

[0027] The above are only the preferred embodiments of the utility model and do not impose any form of limitation on the utility model. Although the utility model has been disclosed above with the preferred embodiments, it is not intended to limit the utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to make equivalent embodiments with equivalent changes within the scope of the technical solution of the utility model. However, as long as it does not depart from the content of the technical solution of the utility model, any brief modification, equivalent change, and modification made to the above embodiments according to the technical essence of the utility model still fall within the scope of the technical solution of the utility model.

Claims

1. A vibration-resistant special vehicle cab slide, characterized in that , including a body, an L-shaped guide rail, a car ladder, and a rolling assembly. The L-shaped guide rail is a square tube with a groove at the bottom and is welded to the body; the rolling assembly extends out of the L-shaped guide rail and is connected to the car ladder. The rolling assembly includes a pressure cover, a large stainless steel ball, a small stainless steel ball, a roller body, a thrust bearing tightening ring, a thrust bearing flower blue ball, a rolling bearing, and an internal threaded sleeve. A rolling bearing is provided between the L-shaped guide rail groove and the roller body. The roller body is provided with a groove, in which a large stainless steel ball is placed. The large stainless steel ball is limited by a pressure cover, and an internal threaded sleeve is provided between the rolling bearing and the car ladder.

2. A vibration-resistant special vehicle cab slide according to claim 1, characterized in that: A plurality of small stainless steel beads are arranged between the large stainless steel ball and the bottom wall of the groove of the roller body.

3. The vibration-resistant special vehicle cab slide according to claim 1, characterized in that: A thrust bearing turnbuckle ball is arranged between the step of the roller body and the inner wall of the L-shaped guide rail.

4. The vibration-resistant special vehicle cab slide according to claim 3, characterized in that: A thrust bearing tightening ring piece is provided at the step between the thrust bearing turnbuckle ball and the roller body.

5. The vibration-resistant special vehicle cab slide according to claim 1, characterized in that: The vehicle body side enclosure and the vehicle body rear enclosure are respectively provided with locking components.

6. The vibration-resistant special vehicle cab slide according to claim 1, characterized in that: The roller body is connected to the vehicle ladder through a nut.

7. The vibration-resistant special vehicle cab slide according to claim 6, characterized in that: A spring washer is arranged between the nut and the vehicle ladder.

8. The vibration-resistant special vehicle cab slide according to claim 6, characterized in that: The nut is provided with a cotter pin.

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