Transport vehicle with folding crawling ladder

Abstract

The utility model relates to a transport vehicle with a folding ladder stand, which comprises a vehicle frame and a ladder stand main body at the rear part of the vehicle frame, and the ladder stand main body comprises a connecting section and an extending section rotationally connected to the connecting section. An upper connecting seat and a lower connecting seat are arranged in the middle of the connecting section, and the upper connecting seat and the lower connecting seat are rotationally connected with an upper telescopic device extending upwards and a lower telescopic device extending downwards respectively. The lower telescopic device extends to the frame and is rotatably connected with the frame, and the upper telescopic device extends to the extension section and is rotatably connected with the extension section. According to the transport vehicle with the folding crawling ladder, the upper telescopic device is arranged between the extending section and the connecting section, the extending section can be directly driven to be unfolded or folded through the upper telescopic device, the situation that the extending section cannot be folded in time can be avoided, and meanwhile the flexibility of folding or unfolding control over the extending section can be improved.

Description

Technical Field

[0001] The utility model relates to a transport vehicle, in particular to a transport vehicle with a foldable ladder which is installed with the ladder. Background Art

[0002] Some existing transport vehicles are provided with a ladder at the rear of the frame. The ladder can be flipped at the rear of the frame. When the ladder is flipped backward to the ground, a slope structure is formed between the frame and the ground through the ladder, thereby facilitating loading and unloading.

[0003] In order to increase the length of the ramp structure, the existing ladder includes a folding ladder, which includes a connecting section that is rotatably connected to the rear of the frame, and a foldable extension section is arranged on the upper part of the connecting section. In the existing folding ladder, a hydraulic cylinder is usually arranged between the frame and the folding ladder, the lower end of the hydraulic cylinder is rotatably mounted on the frame, and the upper end of the hydraulic cylinder is rotatably connected to a side of the extension section close to the connecting section or rotatably connected to the upper part of the connecting section. In order to facilitate the expansion or retraction of the extension section, the length of the extension section is limited to avoid the situation where the extension section cannot be expanded. Utility Model Content

[0004] The main purpose of the utility model is to provide a transport vehicle with a folding ladder to solve the problem that the length of the extension section of the existing folding ladder is limited.

[0005] The utility model provides a transport vehicle with a folding ladder, comprising a vehicle frame, a ladder body of the folding ladder is arranged at the rear of the vehicle frame, the ladder body comprises a connecting section and an extension section rotatably connected to the connecting section, the connecting section is rotatably connected to the rear of the vehicle frame. An upper connecting seat and a lower connecting seat are arranged in the middle of the connecting section, and an upper telescopic device extending upward and a lower telescopic device extending downward are rotatably connected to the upper connecting seat and the lower connecting seat respectively. The lower telescopic device extends toward the vehicle frame and is rotatably connected to the vehicle frame, and the upper telescopic device extends toward the extension section and is rotatably connected to the extension section.

[0006] Preferably, a mounting seat extending outward is provided at the lower portion of the extension section, and the upper telescopic device is rotatably connected to the mounting seat.

[0007] Preferably, the lower end of the lower telescopic device is rotatably mounted on the lower middle portion of the frame, and the connecting section is rotatably mounted on the upper middle portion of the rear portion of the frame.

[0008] Preferably, the upper telescopic device and the lower telescopic device are respectively an upper hydraulic cylinder and a lower hydraulic cylinder, the base of the lower hydraulic cylinder is rotatably mounted on the frame, and the upper part of the telescopic rod of the lower hydraulic cylinder is rotatably mounted on the connecting section; the base of the upper hydraulic cylinder is rotatably mounted on the connecting section, and the upper part of the telescopic rod of the upper hydraulic cylinder is rotatably mounted on the extension section.

[0009] Preferably, a support leg is provided at the upper part of the connecting section or at the upper part of the extending section near the connecting section, and the support leg is rotatably mounted on the ladder body.

[0010] The utility model provides a transport vehicle with a foldable ladder, which has the following beneficial effects compared with the prior art:

[0011] The above-mentioned transport vehicle with a foldable ladder is provided with a connecting section and an extending section, and the extending section is rotatably arranged on the connecting section, that is, the extending section can be folded. The above-mentioned transport vehicle with a foldable ladder is improved in that the lower telescopic device is connected to the middle part of the connecting section, which can reduce the length of the lower telescopic device compared with the conventional connection at the upper part of the connecting section or the extending section.

[0012] At the same time, an upper telescopic device is arranged between the extension section and the connecting section. The upper telescopic device can directly drive the extension section to be unfolded or folded. The unfolding and folding of the extension section are completed by the upper telescopic device, which can avoid the situation where the extension section fails to be folded in time.

[0013] Finally, the setting of the upper telescopic device can also improve the flexibility of the control of folding or unfolding the extension section. The operator can adjust the unfolding or folding of the extension section as needed, thereby avoiding the situation where the extension section cannot be unfolded. At the same time, the center of gravity of the ladder body is moved toward the direction of the frame through the folding of the extension section, thereby reducing the resistance of the connecting section to flip upward. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0015] Obviously, the drawings described below are only some specific embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without any creative work.

[0016] Figure 1 It is a partial side view schematic diagram of the transport vehicle when the foldable ladder in Example 1 of the utility model is unfolded.

[0017] Figure 2 It is a partial side view schematic diagram of the transport vehicle when the foldable ladder in Example 1 of the utility model is folded.

[0018] In the attached figure:

[0019] Label name Label name 1 Connection segment 6 Upper telescopic device 2 Extension 7 Outriggers 3 Lower connector 8 Frame 4 Upper connector 5 Lower telescopic device DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0022] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0026] Example 1

[0027] The present embodiment provides a transport vehicle with a foldable ladder, which comprises a frame 8, a ladder body of the foldable ladder is arranged at the rear of the frame 8, the ladder body comprises a connecting section 1 and an extension section 2 rotatably connected to the connecting section 1, and the connecting section 1 is rotatably connected to the rear of the frame 8. An upper connecting seat 4 and a lower connecting seat 3 are arranged in the middle of the connecting section 1, and an upper telescopic device 6 extending upward and a lower telescopic device 5 extending downward are rotatably connected to the upper connecting seat 4 and the lower connecting seat 3, respectively. The lower telescopic device 5 extends toward the frame 8 and is rotatably connected to the frame 8, and the upper telescopic device 6 extends toward the extension section 2 and is rotatably connected to the extension section 2.

[0028] The above-mentioned transport vehicle with a foldable ladder is provided with a connecting section 1 and an extension section 2, and the extension section 2 is rotatably arranged on the connecting section 1, that is, the extension section 2 can be folded. The above-mentioned transport vehicle with a foldable ladder is improved in that an upper telescopic device 6 and a lower telescopic device 5 are provided at the same time, and the lower telescopic device 5 is connected to the middle part of the connecting section 1. Compared with the conventional connection at the upper part of the connecting section 1 or the extension section 2, the length of the lower telescopic device 5 can be reduced. At the same time, the upper telescopic device 6 is provided between the extension section 2 and the connecting section 1, and the upper telescopic device 6 can directly drive the extension section 2 to be unfolded or folded. The unfolding and folding of the extension section 2 are completed by the upper telescopic device 6, which can avoid the situation where the extension section 2 fails to fold in time.

[0029] When the ladder needs to be used, the lower telescopic device 5 is used to drive the connecting section 1 to flip downward. At this time, the extension section 2 is in a folded state. When the connecting section 1 rotates to a preset angle, the upper telescopic device 6 drives the extension section 2 to flip so that the extension section 2 is unfolded. Finally, the extension section 2 is grounded again through the lower telescopic device 5 to complete the laying of the ladder. When the ladder needs to be folded, the lower telescopic device 5 is used to flip the connecting section 1 upward first, and then the upper telescopic device 6 is used to fold the extension section 2 when there is enough space. At this time, the length of the ladder body is reduced, and the extension section 2 is folded on the connecting section 1. The center of gravity can also be moved in a direction close to the frame 8 to reduce the resistance to the turning of the ladder body. In the above manner, the turning of the connecting section 1 and the folding or unfolding of the extension section 2 can be more flexibly regulated as needed.

[0030] Specifically, in this embodiment, in order to facilitate the driving of the upper telescopic device 6, a larger angle is formed between the upper telescopic device 6 and the unfolded extension section 2, and a mounting seat extending outward is provided at the lower portion of the extension section 2. The outward extension refers to the downward extension of the extension section 2 after it is unfolded and grounded, and the upper telescopic device 6 is rotatably connected to the mounting seat.

[0031] Specifically, in this embodiment, in order to enable the lower telescopic device 5 to better drive the rotation of the connecting section 1 and to make a larger angle between the connecting section 1 and the lower telescopic device 5, the lower end of the lower telescopic device 5 is rotatably installed in the middle and lower part of the frame 8, and the connecting section 1 is rotatably installed in the middle and upper part of the rear part of the frame 8.

[0032] Specifically, in the present embodiment, the upper telescopic device 6 and the lower telescopic device 5 are respectively an upper hydraulic cylinder and a lower hydraulic cylinder, the base of the lower hydraulic cylinder is rotatably mounted on the frame 8, and the upper part of the telescopic rod of the lower hydraulic cylinder is rotatably mounted on the connecting section 1; the base of the upper hydraulic cylinder is rotatably mounted on the connecting section 1, and the upper part of the telescopic rod of the upper hydraulic cylinder is rotatably mounted on the extension section 2.

[0033] Specifically, in this embodiment, in order to improve the strength of the ladder body and prevent the goods on the ladder body from breaking the ladder body, the upper part of the connecting section 1 or the upper part of the extending section 2 close to the connecting section 1 is provided with a leg 7, and the leg 7 is rotatably mounted on the ladder body.

[0034] Of course, the above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept of the utility model, or direct / indirect application in other related technical fields are included in the patent protection scope of the utility model and should be protected by the utility model.

Claims

1. A transport vehicle with a foldable ladder, comprising a frame, a ladder body of the foldable ladder is arranged at the rear of the frame, the ladder body comprises a connecting section and an extension section rotatably connected to the connecting section, the connecting section is rotatably connected to the rear of the frame, characterized in that: An upper connecting seat and a lower connecting seat are provided in the middle of the connecting section, and the upper connecting seat and the lower connecting seat are rotatably connected with an upper telescopic device extending upward and a lower telescopic device extending downward respectively; The lower telescopic device extends toward the vehicle frame and is rotatably connected to the vehicle frame, and the upper telescopic device extends toward the extension section and is rotatably connected to the extension section.

2. The transport vehicle with a foldable ladder according to claim 1, characterized in that: A mounting seat extending outward is arranged at the lower part of the extension section, and the upper telescopic device is rotatably connected to the mounting seat.

3. The transport vehicle with a foldable ladder according to claim 1, characterized in that: The lower end of the lower telescopic device is rotatably mounted on the middle and lower part of the frame, and the connecting section is rotatably mounted on the middle and upper part of the rear part of the frame.

4. The transport vehicle with a foldable ladder according to claim 1, characterized in that: The upper telescopic device and the lower telescopic device are respectively an upper hydraulic cylinder and a lower hydraulic cylinder, the base of the lower hydraulic cylinder is rotatably mounted on the frame, and the upper part of the telescopic rod of the lower hydraulic cylinder is rotatably mounted on the connecting section; The base of the upper hydraulic cylinder is rotatably mounted on the connecting section, and the upper part of the telescopic rod of the upper hydraulic cylinder is rotatably mounted on the extending section.

5. The transport vehicle with a foldable ladder according to claim 1, characterized in that: A support leg is provided at the upper part of the connecting section or at the upper part of the extending section close to the connecting section, and the support leg is rotatably mounted on the ladder body.

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