Ladder and tank container

Abstract

The present invention provides a climbing ladder and a tank container. The climbing ladder is arranged on the frame of the tank container. The climbing ladder includes a top ladder, a middle ladder and a bottom ladder. The top ladder is rotatably connected to the top of the frame. One end of the middle ladder is slidably connected to the top ladder, and a positioning pin is provided at the other end of the middle ladder. The bottom ladder is rotatably connected to the bottom of the frame. The bottom ladder includes a guiding mechanism, and a guiding groove is formed in the guiding mechanism. The positioning pin can be slidably received in the guiding groove to rotate and open or close the climbing ladder. When the positioning pin moves to the end of the guiding groove away from the frame, the middle ladder and the bottom ladder are positioned and connected. The climbing ladder can be climbed more labor-savingly and occupies less space.

Description

Technical Field

[0001] The present invention relates to a container structure, in particular to a ladder and a tank container. Background Art

[0002] To facilitate the operation of the valve components at the top of the tank container, ladders are often provided at the front end, rear end or both the front and rear ends of the tank container. The design of the ladder is mainly based on a fixed welded structure. Restricted by the inherent structure of the tank container, the ladder is mostly installed vertically with the ground. When the operator climbs the ladder, it is perpendicular to the ground, and the process of climbing up and down the ladder is relatively laborious and the comfort is poor. At the same time, for the inclined ladder, it often occupies a large space, which is not conducive to the layout of the tank container. Summary of the Invention

[0003] An object of the present application is to provide a ladder that can be climbed more labor - saving and occupies less space on the one hand.

[0004] A ladder is provided on the frame of the tank container. The ladder includes:

[0005] A top ladder, rotatably connected to the top of the frame;

[0006] A middle ladder, one end of the middle ladder is slidably connected to the top ladder, and the other end of the middle ladder is provided with a positioning pin; and

[0007] A bottom ladder, rotatably connected to the bottom of the frame. The bottom ladder includes a guiding mechanism, the guiding mechanism is provided with a guiding groove, and the positioning pin can be slidably received in the guiding groove to rotate and open or close the ladder. When the positioning pin moves to the end of the guiding groove away from the frame, the middle ladder is positioned and connected to the bottom ladder.

[0008] In one embodiment, the middle ladder is connected to the top ladder through a sliding pair.

[0009] In one embodiment, the guiding groove includes a sliding portion and a check portion. The check portion is located at the end of the sliding portion away from the frame, and the positioning pin is limited in the check portion.

[0010] In one embodiment, a strengthening structure is provided at one end of the guiding mechanism close to the check portion.

[0011] In one embodiment, the side of the check portion facing the sliding portion is inclined, and the included angle between the check portion and the sliding portion is an acute angle.

[0012] In one embodiment, the connection between the top ladder and the frame is the first connection, and the connection between the bottom ladder and the frame is the second connection. The sum of the distance between the first connection and the second connection and the length of the bottom ladder is greater than or equal to the sum of the lengths of the top ladder and the middle ladder.

[0013] Moreover, the distance between the first connection and the second connection is greater than or equal to the difference between the sum of the lengths of the top ladder and the middle ladder and the length of the bottom ladder.

[0014] In one embodiment, the bottom ladder further includes a first bolt, which is arranged at the end of the guiding mechanism away from the frame, and the first bolt is in limit connection with one end of the middle ladder received in the guiding groove.

[0015] In one embodiment, the bottom ladder further includes a second bolt, which is arranged in the middle of the guiding mechanism, and the second bolt is in limit connection with the middle ladder.

[0016] In one embodiment, the bottom ladder includes two of the guiding mechanisms and a connecting structure connected between the two guiding mechanisms.

[0017] In one embodiment, the top ladder includes a sliding guiding mechanism, a sliding groove is formed in the sliding guiding mechanism, and a sliding pin is arranged at one end of the middle ladder close to the top ladder. The sliding pin can be slidably received in the sliding groove to enable the middle ladder to slide relative to the top ladder.

[0018] On the other hand, the present application further provides a tank container.

[0019] A tank container includes a tank body, a frame connected to the outside of the tank body, and a ladder arranged on the frame. The ladder is arranged at the end or on both sides of the frame.

[0020] For the above-mentioned tank container and ladder, the ladder includes a top ladder, a middle ladder and a bottom ladder. The top ladder and the middle ladder are slidably connected. The middle ladder and the bottom ladder are rotatably connected. When the middle ladder and the bottom ladder are in an open state, the plane where the top ladder and the middle ladder are located is inclined relative to the ground, so that it is convenient for the staff to climb up and down the ladder. When the middle ladder and the bottom ladder are in a closed state, the middle ladder and the bottom ladder are folded and closed, and the top ladder and the middle ladder are folded and fixed on the frame to reduce the occupied space of the ladder and facilitate the layout of the ladder in the limited space of the tank container. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the ladder of this embodiment;

[0022] Figure 2 is Figure 1 the side view of the ladder shown;

[0023] Figure 3 is Figure 1 the side view of the sliding guiding mechanism of the top ladder shown;

[0024] Figure 4 is Figure 1 the schematic structural view of the middle ladder shown;

[0025] Figure 5 is Figure 1 the side view of the guiding mechanism of the bottom ladder shown;

[0026] Figure 6 is Figure 1 the schematic structural view of the bottom ladder shown.

[0027] Explanation of reference numerals: 10, ladder; 11, top ladder; 111, sliding guiding mechanism; 112, sliding groove; 113, widened part; 114, first ear; 115, connecting hole; 12, middle ladder; 121, vertical rod; 122, cross bar; 123, sliding pin; 1231, first sliding pin; 1232, second sliding pin; 124, positioning pin; 13, bottom ladder; 130, second ear; 131, guiding mechanism; 132, guiding groove; 133, sliding part; 134, anti - return part; 135, strengthening structure; 136, first bolt; 137, second bolt; 138, connecting structure; 139, handle; 20, frame. Detailed implementation manners

[0028] Although the present invention can be easily embodied in different forms of embodiments, only some specific embodiments are shown in the drawings and will be described in detail in this specification. At the same time, it can be understood that this specification should be regarded as an exemplary illustration of the principles of the present invention and is not intended to limit the present invention to what is described herein.

[0029] Thus, a feature pointed out in this specification is used to illustrate one feature of one embodiment of the present invention, rather than implying that each embodiment of the present invention must have the described feature. In addition, it should be noted that this specification describes many features. Although some features can be combined together to show possible system designs, these features can also be used in other combinations not explicitly described. Thus, unless otherwise stated, the described combinations are not intended to be limiting.

[0030] In the embodiments shown in the drawings, the indication of directions (such as up, down, left, right, front, and back) is used to explain that the structures and movements of various elements of the present invention are not absolute but relative. When these elements are in the positions shown in the drawings, these explanations are appropriate. If the descriptions of the positions of these elements change, the indication of these directions will also change accordingly.

[0031] The following further elaborates in detail the preferred embodiments of the present invention in conjunction with the drawings of this specification.

[0032] The present invention provides a tank container, which includes a tank body, a frame connected to the outside of the tank body, and a ladder provided on the frame. The ladder is provided at the end or both sides of the frame.

[0033] See Figure 1 and Figure 2 , a ladder 10 is provided on the frame 20 of the tank container. The ladder 10 includes a top ladder 11, a middle ladder 12, and a bottom ladder 13. The top ladder 11 is slidably connected to the middle ladder 12. The middle ladder 12 is rotatably connected to the bottom ladder 13. The ladder 10 has two states: open and closed. The middle ladder 12 and the bottom ladder 13 can be opened and closed with respect to each other. When the middle ladder 12 and the bottom ladder 13 are in the open state, there is an angle between the middle ladder 12 and the bottom ladder 13. Then, the middle ladder 12 slides relatively away from the top ladder 11, increasing the total length of the middle ladder 12 and the top ladder 11, and making the plane where the top ladder 11 and the middle ladder 12 are located inclined with respect to the ground, so as to facilitate the staff to climb up and down the ladder 10. When the middle ladder 12 and the bottom ladder 13 are in the closed state, the middle ladder 12 and the bottom ladder 13 are folded and closed. Moreover, the top ladder 11 and the middle ladder 12 slide close to each other, reducing the total length of the middle ladder 12 and the top ladder 11, and folding and fixing the top ladder 11 and the middle ladder 12 on the frame 20 to reduce the occupied space of the ladder 10 and facilitate the layout of the ladder 10 in the limited space of the tank container.

[0034] Please refer to Figure 3 , the top ladder 11 is rotatably connected to the top of the frame 20. The top ladder 11 includes a sliding guiding mechanism 111. The sliding guiding mechanism 111 is provided with a sliding groove 112. The sliding groove 112 extends from one end of the sliding guiding mechanism 111 to the other end. The sliding guiding mechanism 111 is provided with a widened portion 113, and the widened portion 112 is located on one side of the sliding groove 112. The widened portion 113 is used to enhance the strength of the sliding guiding mechanism 111. The sliding guiding mechanism 111 includes two pieces, which are arranged oppositely. The sliding guiding mechanism 111 is a plate structure.

[0035] The first ear 114 at the top end of the sliding guiding mechanism 111. A connecting hole 115 is provided on the first ear 114, and the first ear 114 is rotatably connected to the frame 20. When the ladder 10 switches between the open and closed states, the top ladder 11 rotates relative to the frame 20.

[0036] The middle ladder 12 is connected to the top ladder 11 through a sliding pair. The sliding pair can be structures such as a sliding groove, a sliding rail, a telescopic member, etc.

[0037] Please refer to Figure 4 , specifically in this embodiment, the middle ladder 12 includes two vertically arranged rods 121 disposed opposite to each other. A plurality of rungs 122 are arranged at intervals between the two vertically arranged rods 121. One end of the vertically arranged rod 121 close to the top ladder 11 is provided with a sliding pin 123, and the other end of the vertically arranged rod 121 is provided with a positioning pin 124. The sliding pin 123 can be slidably received in the sliding groove 112, so that the middle ladder 12 slides relative to the top ladder 11. The sliding pin 123 can be one or more.

[0038] Specifically in this embodiment, the sliding pin 123 includes a first sliding pin 1231 and a second sliding pin 1232. The first sliding pin 1231 and the second sliding pin 1232 are arranged at intervals on the vertically arranged rod. Both the first sliding pin 1231 and the second sliding pin 1232 are received in the sliding groove 112 and slide along the sliding groove 112. There are two force application points between the first sliding pin 1231, the second sliding pin 1232 and the top ladder 11, so that the middle ladder 12 and the top ladder 11 can be located on the same straight line, and the middle ladder 12 and the top ladder 11 slide relative to each other on the same straight line.

[0039] One end of the middle ladder 12 is slidably connected to the top ladder 11, and a positioning pin 124 is provided at the other end of the middle ladder 12. The positioning pin 124 is provided at the other end of the vertically arranged rod 121.

[0040] Please refer to Figure 5 and Figure 6 , the bottom ladder 13 is rotatably connected to the bottom of the frame 20. The bottom ladder 13 includes a guiding mechanism 131. The guiding mechanism 131 is provided with a second ear 130 near the bottom of the frame 20. A connecting hole is provided on the second ear 130, and the second ear 130 is rotatably connected to the frame 20. When the ladder 10 switches between the open and closed states, the bottom ladder 13 rotates relative to the frame 20.

[0041] The guiding mechanism 131 is provided with a guiding groove 132. The positioning pin 124 is received in the guiding groove 132. The positioning pin can slide along the guiding groove 132 and can also rotate within the guiding groove 132. The positioning pin 124 slides and rotates within the guiding groove 132 to rotate and open or close the ladder 10. The positioning pin 124 can move from one end of the guiding mechanism 131 to the other end. When the positioning pin 124 moves to the end of the guiding groove 132 away from the frame 20, the middle ladder 12 is positioned and connected to the bottom ladder 13.

[0042] The guiding groove 132 includes a sliding portion 133 and a check portion 134. The check portion 134 is located at one end of the sliding portion 133 away from the frame 20, and the positioning pin 124 is limited within the check portion 134. The check portion 134 is arranged at an angle with the end of the sliding portion 133 away from the frame 20. The side of the check portion 134 facing the sliding portion 133 is inclined. The angle between the check portion 134 and the sliding portion 133 is an acute angle. When the positioning pin 124 is received within the check portion 134, it is not easy for the positioning pin 124 to slide from the check portion 134 into the sliding portion 133, ensuring that the positioning pin 124 can position between the bottom ladder 13 and the middle ladder 12.

[0043] One end of the guiding mechanism 131 close to the check portion 134 is provided with a strengthening structure 135. The strengthening structure 135 can enhance the strength of the end of the guiding mechanism 131 provided with the check portion 134, avoid the concentrated force between the positioning pins 124 in the guiding mechanism 131, and prevent the guiding mechanism 131 from deforming. The strengthening structure 135 can be a reinforcing rib provided on the guiding mechanism 131, or a widened panel provided on the guiding mechanism 131, or a thickened layer provided for the guiding mechanism 131, etc.

[0044] Specifically, in this embodiment, there are two guiding mechanisms 131 which are arranged oppositely. The two guiding mechanisms 131 respectively form the left and right sides of the bottom ladder 13. It can be understood that there can also be one guiding mechanism 131. One side of the bottom ladder 13 is the guiding mechanism 131, and the other side can be other plates, which can also realize the sliding and rotation of the positioning pin 124 within the guiding groove 132 and the relative movement between the bottom ladder 13 and the middle ladder 12.

[0045] The connection between the top ladder 11 and the frame 20 is the first connection, and the connection between the bottom ladder 13 and the frame 20 is the second connection. The sum of the distance between the first connection and the second connection and the length of the bottom ladder 13 is greater than or equal to the sum of the lengths of the top ladder 11 and the middle ladder 12. And, the distance between the first connection and the second connection is greater than or equal to the difference between the sum of the lengths of the top ladder 11 and the middle ladder 12 and the length of the bottom ladder 13.

[0046] When the bottom ladder 13 is expanded, the top ladder 11 and the middle ladder 12 form the inclined plane of the climbing ladder 10. The top ladder 11, the middle ladder 12, the bottom ladder 13 and the frame 20 can jointly form a triangular structure. Then the inclined plane of the climbing ladder 10 formed by the top ladder 11 and the middle ladder 12 is inclined to the ground, which is convenient for the staff to climb up and down the climbing ladder 10.

[0047] The bottom ladder 13 further includes a first bolt 136. The first bolt 136 is arranged at one end of the guiding mechanism 131 away from the frame 20, and the first bolt 136 is in limit connection with one end of the middle ladder 12 received in the guiding groove 132. When the positioning pin 124 is positioned in the guiding groove 132, in order to prevent the positioning pin 124 from sliding in the guiding groove 132, resulting in the unstable fixation of the inclined plane of the climbing ladder 10, the first bolt 136 is used to position the middle ladder 12 to prevent the middle ladder 12 and the bottom ladder 13 from sliding again.

[0048] It can be understood that the first bolt 136 is inserted into the guiding mechanism 131 of the bottom ladder 13, passes through the middle ladder 12 or abuts against and fastens the middle ladder 12, so that the middle ladder 12 and the bottom ladder 13 are in limit connection.

[0049] The bottom ladder 13 further includes a second bolt 137. The second bolt 137 is arranged in the middle of the bottom ladder 13. The second bolt 137 is in limit connection with the middle ladder 12. When the climbing ladder 10 is not in use, the climbing ladder 10 is adjusted to the closed state, that is, the bottom ladder 13 and the middle ladder 12 overlap and close, and are overlapped and fixed on the frame 20. The second bolt 137 fixes the bottom ladder 13 and the middle ladder 12. Even during the driving of the tanker, the middle ladder 12 and the bottom ladder 13 remain in the closed state. The second bolt 137 is arranged in the middle of the guiding mechanism 131 to ensure uniform force between the bottom ladder 13 and the middle ladder 12.

[0050] Please refer to Figure 6 , the bottom ladder 13 further includes a connecting structure 138 connected between the two guiding mechanisms 131. The connecting structure 138 is supported between the two guiding mechanisms 131 and is perpendicular to the two guiding mechanisms 131. The connecting structure 138 can enhance the strength of the bottom ladder 13 so that the bottom ladder 13 can stably support the middle ladder 12 and the top ladder 11.

[0051] A handle 139 is further arranged on the outer side of the guiding mechanism 131 of the bottom ladder 13. The handle 139 is convenient for hand holding and facilitates the opening and closing of the bottom ladder 13.

[0052] While the invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary rather than restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but rather should be construed broadly within the spirit and scope defined by the appended claims, and thus all variations and modifications that fall within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A climbing ladder is provided on the frame of a tank container, characterized in that, The ladder includes: A top ladder, rotatably connected to the top of the frame; A middle ladder, one end of the middle ladder is slidably connected to the top ladder, and the other end of the middle ladder is provided with a positioning pin; and A bottom ladder, rotatably connected to the bottom of the frame, the bottom ladder includes a guiding mechanism, the guiding mechanism is provided with a guiding groove, and the positioning pin can be slidably received in the guiding groove to rotate and open or close the ladder. When the positioning pin moves to one end of the guiding groove away from the frame, the middle ladder is positioned and connected to the bottom ladder; the connection between the top ladder and the frame is the first connection, and the connection between the bottom ladder and the frame is the second connection; The guiding groove includes a sliding portion and a check portion, the check portion is located at one end of the sliding portion away from the frame, and the positioning pin is limited in the check portion; One side of the check portion facing the sliding portion is inclined, and the included angle between the check portion and the sliding portion is an acute angle; When the middle ladder and the bottom ladder are in an open state, the height at the intersection of the middle ladder and the bottom ladder is lower than the height of the second connection.

2. The ladder according to claim 1, wherein The middle ladder and the top ladder are connected by a sliding pair.

3. The ladder according to claim 1, wherein One end of the guiding mechanism close to the check portion is provided with a strengthening structure.

4. The ladder according to claim 1, characterized in that, The sum of the distance between the first connection and the second connection and the length of the bottom ladder is greater than or equal to the sum of the length of the top ladder and the length of the middle ladder; And, the distance between the first connection and the second connection is greater than or equal to the difference between the sum of the length of the top ladder and the length of the middle ladder and the length of the bottom ladder.

5. The ladder according to claim 1, characterized in that, The bottom ladder further includes a first plug pin, the first plug pin is arranged at one end of the guiding mechanism away from the frame, and the first plug pin is limitedly connected to one end of the middle ladder received in the guiding groove.

6. The ladder according to claim 1, characterized in that The bottom ladder further includes a second plug pin, the second plug pin is arranged in the middle of the guiding mechanism, and the second plug pin is limitedly connected to the middle ladder.

7. The ladder according to claim 1, characterized in that, The bottom ladder includes two such guiding mechanisms and a connection structure connected between the two guiding mechanisms.

8. The ladder according to claim 1, wherein The top ladder includes a sliding guiding mechanism, the sliding guiding mechanism is provided with a sliding groove, and one end of the middle ladder close to the top ladder is provided with a sliding pin, and the sliding pin can be slidably received in the sliding groove to make the middle ladder slide relative to the top ladder.

9. A tank container, comprising a tank body, a frame connected to the outside of the tank body, and a ladder provided on the frame, characterized in that, The ladder is the ladder according to any one of claims 1 to 8, and the ladder is arranged at the end or both sides of the frame.

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