阅读说明：本技术 爬梯以及罐式集装箱 (Ladder stand and tank container ) 是由 刘传超 张金珠 傅卫星 于 2019-03-25 设计创作，主要内容包括：本发明提供了一种爬梯以及罐式集装箱。爬梯设置在罐箱的框架上。爬梯包括顶部梯、中部梯及底部梯。顶部梯与框架的顶部可转动连接。中部梯的一端与顶部梯可滑动连接,中部梯的另一端设有定位销。底部梯与框架的底部可转动连接,底部梯包括导向机构,导向机构开设有导向槽,定位销可滑动收容于导向槽内,以旋转打开或闭合爬梯,定位销运动到导向槽远离框架的一端,中部梯与底部梯定位连接。爬梯能够较省力爬行、且占用空间较小。(The invention provides a ladder stand and a tank container. The ladder stand is arranged on the frame of the tank. The ladder stand comprises a top ladder, a middle ladder and a bottom ladder. The top ladder is rotatably connected with the top of the frame. One end of the middle ladder is slidably connected with the top ladder, and the other end of the middle ladder is provided with a positioning pin. The bottom ladder is rotatably connected with the bottom of the frame, the bottom ladder comprises a guide mechanism, a guide groove is formed in the guide mechanism, the positioning pin is contained in the guide groove in a sliding mode to open or close the crawling ladder in a rotating mode, the positioning pin moves to one end, far away from the frame, of the guide groove, and the middle ladder is connected with the bottom ladder in a positioning mode. The cat ladder can crawl with less effort and occupy less space.)

1. A ladder stand is arranged on a frame of a tank and is characterized in that the ladder stand comprises:

a top ladder rotatably connected to the top of the frame;

one end of the middle ladder is connected with the top ladder in a sliding mode, and the other end of the middle ladder is provided with a positioning pin; and

the bottom ladder is rotatably connected with the bottom of the frame and comprises a guide mechanism, a guide groove is formed in the guide mechanism, the positioning pin is contained in the guide groove in a sliding mode to rotate to open or close the ladder stand, the positioning pin moves to one end, far away from the frame, of the guide groove, and the middle ladder is connected with the bottom ladder in a positioning mode.

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

3. The ladder of claim 1, wherein the guide slot includes a sliding portion and a non-return portion, the non-return portion is located at an end of the sliding portion away from the frame, and the positioning pin is retained in the non-return portion.

4. A ladder as claimed in claim 3, characterised in that the guide means is provided with a reinforcing structure at one end adjacent the non-return portion.

5. A ladder as claimed in claim 3, wherein the non-return portion is inclined towards one side of the sliding portion and the angle between the non-return portion and the sliding portion is acute.

6. The ladder of claim 1 wherein the junction of the top ladder and the frame is a first junction and the junction of the bottom ladder and the frame is a second junction, the sum of the distance between the first junction and the second junction and the length of the bottom ladder being 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 connecting part and the second connecting part is more 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.

7. The ladder stand as claimed in claim 1, wherein the bottom ladder further comprises a first pin, the first pin is arranged at one end of the guide mechanism far away from the frame, and the first pin is in limit connection with one end of the middle ladder, which is accommodated in the guide groove.

8. The ladder stand of claim 1, wherein the bottom ladder further comprises a second pin, the second pin is arranged in the middle of the guide mechanism, and the second pin is in limit connection with the middle ladder.

9. A ladder as claimed in claim 1, wherein the bottom ladder comprises two guide means and a connecting structure connected between the two guide means.

10. The ladder of claim 1 wherein the top ladder includes a slide guide mechanism defining a slide channel, and wherein the middle ladder includes a slide pin at an end adjacent the top ladder, the slide pin being slidably received in the slide channel to allow the middle ladder to slide relative to the top ladder.

11. A tank container comprising a tank body, a frame attached to the exterior of the tank body and a ladder stand provided on the frame, characterised in that the ladder stand is as claimed in any one of claims 1 to 10, the ladder stand being provided at one or both ends of the frame.

Technical Field

The invention relates to a container structure, in particular to a ladder stand and a tank container.

Background

In order to facilitate the operation of the valve members on the top of the tank, the front end, the rear end or the front end and the rear end of the tank are provided with ladder stands. The design of cat ladder mainly uses fixed welded structure as the main, and this kind of fixed welded structure receives the restriction of the inherent structure of tank, and the cat ladder is installed with ground vertical more, and the operator is when climbing the cat ladder, and with ground vertical, the process of going up and down the cat ladder is harder, and the travelling comfort is relatively poor. Simultaneously, to the cat ladder that the slope set up, its occupation space often is great, is unfavorable for arranging of tank.

Disclosure of Invention

An object of this application lies in, provides one kind on the one hand and can crawl, just occupation space less cat ladder more laborsavingly.

A ladder stand provided on a frame of a tank, the ladder stand comprising:

a top ladder rotatably connected to the top of the frame;

one end of the middle ladder is connected with the top ladder in a sliding mode, and the other end of the middle ladder is provided with a positioning pin; and

the bottom ladder is rotatably connected with the bottom of the frame and comprises a guide mechanism, a guide groove is formed in the guide mechanism, the positioning pin is contained in the guide groove in a sliding mode to rotate to open or close the ladder stand, the positioning pin moves to one end, far away from the frame, of the guide groove, and the middle ladder is connected with the bottom ladder in a positioning mode.

In one embodiment, the middle ladder and the top ladder are connected by a sliding pair.

In one embodiment, the guide groove includes a sliding portion and a non-return portion, the non-return portion is located at an end of the sliding portion away from the frame, and the positioning pin is limited in the non-return portion.

In one embodiment, a reinforcing structure is arranged at one end of the guide mechanism close to the check part.

In one embodiment, the non-return part inclines towards one side of the sliding part, and an included angle between the non-return part and the sliding part is an acute angle.

In one embodiment, the joint of the top ladder and the frame is a first joint, the joint of the bottom ladder and the frame is a second joint, and the sum of the distance between the first joint and the second joint 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 connecting part and the second connecting part is more 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.

In one embodiment, the bottom ladder further comprises a first bolt, the first bolt is arranged at one end, far away from the frame, of the guide mechanism, and the first bolt is in limit connection with one end, accommodated in the guide groove, of the middle ladder.

In one embodiment, the bottom ladder further comprises a second bolt, the second bolt is arranged in the middle of the guide mechanism, and the second bolt is in limit connection with the middle ladder.

In one embodiment, the bottom ladder comprises two guide mechanisms and a connecting structure connected between the two guide mechanisms.

In one embodiment, the top ladder includes a sliding guide mechanism, the sliding guide mechanism is provided with a sliding groove, one end of the middle ladder close to the top ladder is provided with a sliding pin, and the sliding pin is slidably accommodated in the sliding groove, so that the middle ladder slides relative to the top ladder.

Another aspect of the present application also provides a tank container.

A tank container comprises a tank body, a frame connected to the outside of the tank body and a ladder stand arranged on the frame, wherein the ladder stand is arranged at the end part or two sides of the frame.

The tank container and the ladder stand comprise a top ladder, a middle ladder and a bottom ladder. The top ladder is slidably connected with the middle ladder. The middle ladder is rotatably connected with the bottom ladder. When the middle ladder and the bottom ladder are in an opened state, the planes on which the top ladder and the middle ladder are positioned are inclined relative to the ground, so that a worker can conveniently 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, so that the top ladder and the middle ladder are fixed on the frame in a folding mode, the occupied space of the ladder stand is reduced, and the ladder stand is convenient to arrange in the limited space of the tank container.

Drawings

Fig. 1 is a schematic structural view of a ladder stand according to the present embodiment;

figure 2 is a side view of the ladder shown in figure 1;

FIG. 3 is a side view of the slide guide mechanism of the top ladder of FIG. 1;

FIG. 4 is a schematic view of the middle ladder of FIG. 1;

FIG. 5 is a side view of the guide mechanism of the bottom ladder of FIG. 1;

fig. 6 is a schematic structural view of the bottom ladder shown in fig. 1.

The reference numerals are explained below: 10. climbing a ladder; 11. a top ladder; 111. a slide guide mechanism; 112. a sliding groove; 113. a widening section; 114. a first lug; 115. connecting holes; 12. a middle ladder; 121. a vertical rod; 122. a crosspiece; 123. a slide pin; 1231. a first slide pin; 1232. a second slide pin; 124. positioning pins; 13. a bottom ladder; 130. a second lug; 131. a guide mechanism; 132. a guide groove; 133. a sliding part; 134. a non-return portion; 135. a reinforcing structure; 136. a first latch; 137. a second bolt; 138. a connecting structure; 139. a handle; 20. a frame.

Detailed Description

While this invention is susceptible of embodiment in different forms, there is shown in the drawings and will herein be described in detail, specific embodiments thereof with the understanding that the present description is to be considered as an exemplification of the principles of the invention and is not intended to limit the invention to that as illustrated.

Thus, a feature indicated in this specification will serve to explain one of the features of one embodiment of the invention, and does not imply that every embodiment of the invention must have the stated feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.

In the embodiments shown in the drawings, directional references (such as upper, lower, left, right, front and rear) are used to explain the structure and movement of the various elements of the invention not absolutely, but relatively. These descriptions are appropriate when the elements are in the positions shown in the drawings. If the description of the positions of these elements changes, the indication of these directions changes accordingly.

The preferred embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

The invention provides a tank container which comprises a tank body, a frame connected to the outside of the tank body and a ladder stand arranged on the frame. The ladder stands are arranged at the end parts or both sides of the frame.

Referring to fig. 1 and 2, a ladder stand 10 is provided on a frame 20 of a tank. The ladder 10 comprises 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 comprises two states, open and closed, and the middle ladder 12 and the bottom ladder 13 can be mutually opened and closed. When being in the state of opening between middle part ladder 12 and the bottom ladder 13, there is the contained angle between middle part ladder 12 and the bottom ladder 13, then keep away from relatively between middle part ladder 12 and the top ladder 11 and slide, make the total length increase of middle part ladder 12 and top ladder 11, make the plane that top ladder 11 and middle part ladder 12 are located slope for ground to can make things convenient for the staff to go up and down cat ladder 10. When being in the closed state between middle part ladder 12 and the bottom ladder 13, fold up between middle part ladder 12 and the bottom ladder 13 and close to each other to, slide between top ladder 11 and the middle part ladder 12, reduce the total length of middle part ladder 12 and top ladder 11, make top ladder 11 and middle part ladder 12 folding fixed on frame 20 to reduce the occupation space of cat ladder 10, be convenient for cat ladder 10 arranges in tank container's finite space.

Referring to fig. 3, the top ladder 11 is rotatably connected to the top of the frame 20. The top ladder 11 comprises a slide guide 111. The slide guide mechanism 111 is provided with a slide groove 112. The slide groove 112 extends from one end to the other end of the slide guide mechanism 111. The slide guide mechanism 111 is provided with a widened portion 113, and the widened portion 112 is located on one side of the slide groove 112. The widened portion 113 enhances the strength of the slide guide mechanism 111. The slide guide 111 includes two pieces, which are disposed opposite to each other. The slide guide 111 is of a plate structure.

A first lug 114 at the top end of the slide guide 111. The first lug 114 is provided with a connecting hole 115, and the first lug 114 is rotatably connected with the frame 20. The top ladder 11 rotates relative to the frame 20 when the ladder 10 is switched between the open and closed positions.

The middle ladder 12 is connected with the top ladder 11 through a sliding pair. The sliding pair can be a sliding chute, a sliding rail, a telescopic piece and other structures.

Referring to fig. 4, in the present embodiment, the middle ladder 12 includes two opposite vertical bars 121. A plurality of crosspieces 122 are arranged between the two vertical rods 121 at intervals. One end of the vertical rod 121 close to the top ladder 11 is provided with a sliding pin 123, and the other end of the vertical rod 121 is provided with a positioning pin 124. The slide pin 123 is slidably received in the slide groove 112, so that the middle ladder 12 slides relative to the top ladder 11. The slide pin 123 may be one or more.

Specifically, in the present embodiment, the slide pin 123 includes a first slide pin 1231 and a second slide pin 1232. The first sliding pin 1231 and the second sliding pin 1232 are disposed on the vertical rod at an interval. The first and second slide pins 1231 and 1232 are accommodated in the slide groove 112 and slide along the slide groove 112. Two force bearing points exist 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 positioned on the same straight line, and the middle ladder 12 and the top ladder 11 can slide relatively on the same straight line.

One end of the middle ladder 12 is slidably connected with the top ladder 11, and the other end of the middle ladder 12 is provided with a positioning pin 124. The positioning pin 124 is disposed at the other end of the vertical rod 121.

Referring to fig. 5 and 6, the bottom ladder 13 is rotatably connected to the bottom of the frame 20. The bottom ladder 13 comprises a guide 131. The guide mechanism 131 is provided with a second lug 130 near the bottom of the frame 20. The second support lug 130 is provided with a connecting hole, and the second support lug 130 is rotatably connected with the frame 20. The bottom ladder 13 rotates relative to the frame 20 when the ladder 10 is switched between the open and closed positions.

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

The guide groove 132 includes a sliding portion 133 and a check portion 134. The check part 134 is located at one end of the sliding part 133 away from the frame 20, and the positioning pin 124 is limited in the check part 134. The non-return portion 134 is disposed at an angle to an end of the sliding portion 133 remote from the frame 20. The check portion 134 is obliquely provided toward one side of the sliding portion 133. The angle between the check portion 134 and the sliding portion 133 is acute. When the positioning pin 124 is accommodated in the non-return portion 134, the positioning pin 124 is not easy to slide into the sliding portion 133 from the non-return portion 134, and the positioning pin 124 can ensure the positioning between the bottom ladder 13 and the middle ladder 12.

One end of the guide 131 near the backstop 134 is provided with a reinforcement structure 135. The reinforcing structure 135 can reinforce the strength of the end of the guide mechanism 131 where the check portion 134 is provided, and prevent the guide mechanism 131 from being deformed due to concentration of the force of the positioning pin 124 between the guide mechanisms 131. The reinforcing structure 135 may be a reinforcing rib provided on the guide 131, a widened panel provided on the guide 131, a thickened layer provided for the guide 131, or the like.

Specifically, in the present embodiment, the guide mechanisms 131 are provided in two and opposed to each other. The two guide mechanisms 131 respectively constitute the left and right sides of the bottom ladder 13. It is understood that there may be one guide mechanism 131. The bottom ladder 13 has a guide mechanism 131 on one side and other plates on the other side, and the positioning pin 124 can slide and rotate in the guide groove 132 to realize the relative movement between the bottom ladder 13 and the middle ladder 12.

The junction of the top ladder 11 and the frame 20 is a first junction, and the junction of the bottom ladder 13 and the frame 20 is a second junction. The sum of the distance between the first joint and the second joint and the length of the bottom ladder 13 is greater than or equal to the sum of the length of the top ladder 11 and the length of the middle ladder 12. The distance between the first connection point and the second connection point is greater than or equal to the difference between the sum of the length of the top ladder 11 and the length of the middle ladder 12 and the length of the bottom ladder 13.

The top ladder 11 and the middle ladder 12 form an incline for the ladder 10 when the bottom ladder 13 is extended. The top ladder 11 together with the middle ladder 12, the bottom ladder 13 and the frame 20 may together form a triangular structure. The inclined plane of the ladder stand 10 formed by the top ladder 11 and the middle ladder 12 is inclined with the ground, so that the worker can conveniently climb up and down the ladder stand 10.

The bottom ladder 13 also includes a first latch 136. The first pin 136 is disposed at an end of the guiding mechanism 131 away from the frame 20, and the first pin 136 is connected to an end of the middle ladder 12, which is accommodated in the guiding groove 132, in a limiting manner. When the positioning pin 124 is positioned in the guide groove 132, in order to prevent the positioning pin 124 from sliding in the guide groove 132, which results in the inclined plane of the ladder stand 10 not being stably fixed, the first pin 136 is used for positioning the middle ladder 12 and preventing the middle ladder 12 and the bottom ladder 13 from sliding again.

It can be understood that the first pin 136 is inserted into the guiding mechanism 131 of the bottom ladder 13, and passes through the middle ladder 12 or is tightly abutted against the middle ladder 12, so that the middle ladder 12 is connected with the bottom ladder 13 in a limiting manner.

The bottom ladder 13 also includes a second latch 137. The second latch 137 is provided in the middle of the bottom ladder 13. The second bolt 137 is connected with the middle ladder 12 in a limiting way. When the ladder 10 is not in use, the ladder 10 is adjusted to a closed position, i.e. the bottom ladder 13 is closed overlapping the middle ladder 12, overlapping and secured to the frame 20. The second latch 137 secures the bottom ladder 13 to the middle ladder 12. The middle ladder 12 and the bottom ladder 13 are kept closed even during the running of the tank car. The second pin 137 is provided in the middle of the guide mechanism 131 to keep the force between the bottom ladder 13 and the middle ladder 12 uniform.

Referring to fig. 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 guide mechanisms 131 and is disposed perpendicular to the two guide mechanisms 131. The connecting structure 138 may increase the strength of the bottom ladder 13 to enable the bottom ladder 13 to stably support the middle ladder 12 and the top ladder 11.

The handle 139 is also provided on the outside of the guide 131 of the bottom ladder 13. The handle 139 may facilitate hand grasping and opening and closing of the bottom ladder 13.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.