Turnover ladder stand assembled on rear-dump semitrailer and rear-dump semitrailer

Abstract

The utility model provides a rear dump semitrailer assembly overturn type ladder stand and rear dump semitrailer, including ladder stand and a pair of assembly type fixed support for being installed on one side of semitrailer frame, the pair of assembly type fixed support is arranged along the length direction of semitrailer frame, the bottom end of ladder stand is provided with a pair of rotating sleeve, the rotating sleeve is provided with a pair of rotating shaft, and the rotating shaft is provided with a pair of rotating shaft. The rotating sleeve is rotationally arranged on the assembly type fixing support located on the inner side in a sleeving mode, and a lock catch used for holding the top end of the crawling ladder is arranged on the assembly type fixing support located on the outer side. According to the overturning type crawling ladder assembled on the rear-dump semitrailer, the installation dependency of the crawling ladder can be eliminated, the crawling ladder can be arranged without depending on a carriage, and the problem of interference between the crawling ladder and semitrailer parts can be solved.

Description

Technical Field

[0001] The utility model relates to the field of rear-dumping semi-trailers, and specifically, to a rear-dumping semi-trailer equipped with a flip-up ladder and a rear-dumping semi-trailer. Background Art

[0002] A semi-trailer has axles located behind the vehicle's center of gravity and is equipped with a coupling device that can transfer horizontal and vertical forces to the tractor. Generally, a semi-trailer is a three-axle semi-trailer, and its types include eleven-meter barn semi-trailers, thirteen-meter barns, low-bed semi-trailers, etc. A semi-trailer is a heavy-duty transportation vehicle connected to a semi-trailer head through a kingpin. Semi-trailers often carry ladders for working at heights and other tasks. Currently, traditional ladders are generally directly welded to the left front position of the carriage, consisting of a round tube and multiple round tube cross braces in the middle. However, some carriages need to be interrupted into multiple layers, and some carriages need to be arranged inside another carriage, resulting in interference between the welded carriage ladder and the rest of the carriage or other components, making installation impossible and bringing inconvenience to subsequent use.

[0003] The utility model patent with the authorization announcement number CN217672399U discloses a folding ladder for a flatbed semi-trailer, including a ladder body, a sliding rod, and a support base. The bottom of the ladder body is provided with a support base. Reinforcement plates are provided on both the outer and back sides of the ladder body. A number of limiting holes are opened on the side walls on both sides of the ladder body. Fixed slots are opened on the side walls on both sides inside the ladder body. A sliding rod is provided inside the fixed slot. Grooves are opened on the inner side wall of the sliding rod, and connecting rods are provided between the grooves. The folding ladder of this flatbed semi-trailer has a simple structure and is convenient to use. However, the installation state of this folding ladder is single and does not have the function of flipping. Summary of the Utility Model

[0004] In order to get rid of the installation dependence of the ladder, enable the ladder to be arranged without relying on the carriage and also avoid interference problems between the ladder and the components of the semi-trailer, the technical solution adopted by the utility model is: a rear-dumping semi-trailer equipped with a flip-up ladder, including a ladder and a pair of assembled fixed braces for installing on one side of the semi-trailer frame. The pair of assembled fixed braces are arranged along the length direction of the semi-trailer frame.

[0005] A pair of rotating sleeves are provided at the bottom end of the ladder. The rotating sleeves are rotatably sleeved on the inner assembled fixed braces, and a lock for holding the top end of the ladder is provided on the outer assembled fixed brace.

[0006] Based on the above, the assembled fixed brace includes a fixed plate connected to the semi-trailer frame, and a fixed rod is arranged on the fixed plate. In order to avoid tearing at the bolt hole after installation, a reinforcing plate for obliquely supporting the fixed rod is further arranged between the root of the fixed rod and the lower part of the fixed plate.

[0007] Based on the above, the ladder includes a pair of longitudinal braces, and a plurality of cross braces are connected between the pair of longitudinal braces, and the plurality of cross braces are arranged at equal intervals.

[0008] Based on the above, in order to increase stability and safety, an opening pin is further arranged at the outer end of the fixed rod connected to the rotating sleeve.

[0009] Based on the above, the width value of the ladder is less than the length value of the fixed rod.

[0010] Based on the above, the spacing value between the pair of assembled fixed braces is less than the length value of the ladder.

[0011] The present invention also provides a rear-dumping semi-trailer, and the rear-dumping semi-trailer is installed with the above-mentioned rear-dumping semi-trailer assembled and flip-up ladder.

[0012] The present invention has substantial characteristics and progress compared with the prior art. Specifically, the rear-dumping semi-trailer assembled and flip-up ladder and the rear-dumping semi-trailer provided by the present invention assemble the ladder on the frame through a pair of assembled fixed braces. The installation method does not depend on the carriage, and when in use, it can be flipped up and leaned against the semi-trailer box body to achieve the use effect of the ladder. At the same time, the ladder is installed on the side of the semi-trailer frame, does not occupy the middle structure of the frame, and avoids interference problems with indispensable parts such as the oil cylinder and fuel tank in the middle of the frame of the rear-dumping semi-trailer.

[0013] Therefore, compared with the existing traditional ladder, the rear-dumping semi-trailer assembled and flip-up ladder has relatively weak installation dependence, can realize the layout of the ladder without depending on the carriage, and can effectively avoid interference problems between the ladder and related parts, and has a better structural layout. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the rear-dumping semi-trailer assembled and flip-up ladder and the rear-dumping semi-trailer provided by the present invention in a storage and mating state.

[0015] Figure 2 is a schematic structural diagram of the rear-dumping semi-trailer assembled and flip-up ladder and the rear-dumping semi-trailer provided by the present invention in a flip-up and use mating state.

[0016] Figure 3 is a schematic structural diagram of the rear-dumping semi-trailer assembled and flip-up ladder provided by the present invention.

[0017] In the figure: 1. Semi-trailer box body; 2. Semi-trailer frame; 3. Cross brace; 4. Longitudinal brace; 5. Fixed rod; 6. Lock; 7. Fixed plate; 8. Rotating sleeve; 9. Reinforcing plate. Specific embodiments

[0018] The technical solution of the present utility model will be further described in detail through specific embodiments below.

[0019] Embodiment 1

[0020] This embodiment provides a rear-dumping semi-trailer equipped with a flip-down ladder, as shown in Figure 1 , Figure 2 , Figure 3 , including a ladder and a pair of assembled fixed braces for mounting on one side of the semi-trailer frame 2. The pair of assembled fixed braces are arranged along the length direction of the semi-trailer frame.

[0021] Specifically, as shown in Figure 3 , a pair of rotating sleeves 8 are provided at the bottom end of the ladder, and the rotating sleeves 8 are rotatably sleeved on the inner assembled fixed braces. A lock 6 for holding the top end of the ladder is provided on the outer assembled fixed brace.

[0022] Among them, the assembled fixed brace includes a fixed plate 7 connected to the semi-trailer frame 2. A fixed rod 5 is provided on the fixed plate 7.

[0023] In order to avoid tearing at the bolt hole after installation, a reinforcing plate 9 for obliquely supporting the fixed rod 5 is further provided between the root of the fixed rod 5 and the lower part of the fixed plate 7.

[0024] In order to increase stability and safety, an opening pin is further provided at the outer end of the fixed rod 5 connected to the rotating sleeve 8.

[0025] Specifically, when using the rear-dumping semi-trailer equipped with a flip-down ladder, first open the lock 6, and then flip up the rear-dumping semi-trailer equipped with a flip-down ladder so that its upper end leans against one side of the semi-trailer box body 1.

[0026] Embodiment 2

[0027] This embodiment provides a rear-dumping semi-trailer equipped with a flip-down ladder. The main difference from Embodiment 1 is that in this embodiment, the ladder includes a pair of longitudinal braces 4, and a plurality of cross braces 3 are connected between the pair of longitudinal braces 4, and the plurality of cross braces are arranged at equal intervals. The width value of the ladder is less than the length value of the fixed rod. The spacing value between the pair of assembled fixed braces is less than the length value of the ladder.

[0028] Embodiment 3

[0029] This embodiment provides a rear-dumping semi-trailer, which is equipped with the rear-dumping semi-trailer assembly with a flip-up ladder described in Embodiment 1 or Embodiment 2.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that it is still possible to modify the specific implementation manners of the present invention or perform equivalent replacements for some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. A rear-unloading semi-trailer equipped with a flip ladder, characterized in that: The invention comprises a ladder and a pair of assembled fixing supports for installation on one side of a semi-trailer frame, wherein the pair of assembled fixing supports are arranged along the length direction of the semi-trailer frame. A pair of rotating sleeves are arranged at the bottom end of the ladder, and the rotating sleeves are rotatably sleeved on the assembled fixing support located on the inner side, and a lock buckle for holding the top end of the ladder is arranged on the assembled fixing support located on the outer side.

2. The rear-dumping semi-trailer equipped with a flip ladder according to claim 1, characterized in that: The assembled fixing support comprises a fixing plate connected to the semi-trailer frame, a fixing rod is arranged on the fixing plate, and a reinforcing plate for obliquely supporting the fixing rod is also arranged between the root of the fixing rod and the lower part of the fixing plate.

3. The rear-unloading semi-trailer equipped with a flip ladder according to claim 1 or 2, characterized in that: The ladder comprises a pair of longitudinal supports, a plurality of transverse supports are connected between the pair of longitudinal supports, and the plurality of transverse supports are arranged at equal intervals.

4. The rear-dumping semi-trailer equipped with a flip ladder according to claim 2, characterized in that: The outer end of the fixing rod connected to the rotating sleeve is also provided with a split pin.

5. The rear-dumping semi-trailer equipped with a flip ladder according to claim 4, characterized in that: The width of the ladder is smaller than the length of the fixing rod.

6. The rear-dumping semi-trailer equipped with a flip ladder according to claim 5, characterized in that: The distance between a pair of the assembled fixing supports is smaller than the length of the ladder.

7. A rear-dumping semitrailer, characterized in that: The rear-dumping semi-trailer is equipped with a rear-dumping semi-trailer-mounted flip ladder as described in any one of claims 1 to 6.

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