CN108609307B - Tank and ladder thereof - Google Patents
Tank and ladder thereof Download PDFInfo
- Publication number
- CN108609307B CN108609307B CN201611129320.2A CN201611129320A CN108609307B CN 108609307 B CN108609307 B CN 108609307B CN 201611129320 A CN201611129320 A CN 201611129320A CN 108609307 B CN108609307 B CN 108609307B
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- Prior art keywords
- ladder
- main
- frame
- auxiliary
- main ladder
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- 241000282326 Felis catus Species 0.000 claims abstract description 13
- 230000009193 crawling Effects 0.000 claims abstract description 7
- 238000000926 separation method Methods 0.000 claims 1
- 230000009194 climbing Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001503987 Clematis vitalba Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2590/00—Component parts, details or accessories for large containers
- B65D2590/0091—Ladders
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
The invention provides a cat ladder, which is arranged on a frame of a tank, and comprises: a main ladder, the top end of which is rotatably connected with the top end of the frame; the bottom end of the auxiliary ladder is rotatably connected with the bottom end of the frame; the top end of the auxiliary ladder is slidably connected with the bottom end of the main ladder, and the main ladder and the auxiliary ladder slide relatively to change an included angle between the main ladder and the auxiliary ladder. The main ladder and the auxiliary ladder in the crawling ladder can be connected in a sliding way, and the included angle between the main ladder and the auxiliary ladder can be changed by sliding the main ladder and the auxiliary ladder relatively, so that the included angle between the main ladder and a plane where the tank box frame is positioned is changed, and the main ladder is in an inclined state.
Description
Technical Field
The invention relates to storage and transportation equipment, in particular to a tank and a ladder thereof.
Background
Along with the rapid development of internationalized logistics, tank trucks with tank containers (hereinafter referred to as tank boxes) are widely used in the transportation and storage of various bulk cargoes, so that the transportation, storage and distribution of bulk materials have various benefits of economy, convenience, environmental protection, safety and the like.
In order to facilitate the operations of taking and delivering objects by workers on and off the vehicle roof, a ladder stand is generally arranged at the rear side of the tank. The traditional cat ladder is an integral straight ladder structure, and is generally clung to the tank body of the tank. The top and bottom ends of the ladder stand are directly connected with the frame of the tank through welding or bolts, so that the ladder stand is in a structure of being vertically up and down in the vertical direction in the plane of the frame.
The ladder has the following defects: because the cat ladder is hugged closely the jar body and is vertical direction setting, therefore the staff crawl very inconvenient from top to bottom when using, and is more laborious, and the security is also lower.
Disclosure of Invention
The invention aims to solve the problems of inconvenient use, laborious operation and low safety of a ladder for a tank in the prior art.
In order to solve the technical problems, the invention provides a cat ladder, which is arranged on a frame of a tank, and comprises: a main ladder, the top end of which is rotatably connected with the top end of the frame; the bottom end of the auxiliary ladder is rotatably connected with the bottom end of the frame; the top end of the auxiliary ladder is slidably connected with the bottom end of the main ladder, and the main ladder and the auxiliary ladder slide relatively to change an included angle between the main ladder and the auxiliary ladder.
Preferably, the bottom end of the main ladder is fixedly connected with a first sliding part, and the auxiliary ladder is provided with a first groove matched with the first sliding part; the first slider slides in the first groove to change an included angle between the main ladder and the auxiliary ladder.
Preferably, the crawling ladder further comprises a secondary ladder, the bottom end of the secondary ladder is rotatably connected with the bottom end of the frame, and the top end of the secondary ladder is fixedly connected with a second sliding piece; the main ladder is provided with a second groove matched with the second sliding part, and the second sliding part slides in the second groove so as to change the included angle between the main ladder and the secondary ladder.
Preferably, when the first sliding piece or the second sliding piece slides, an included angle between the main ladder and a plane where the frame is located is 0-10 degrees; when the included angle between the main ladder and the plane where the frame is located is 0 DEG, the main ladder, the auxiliary ladder and the auxiliary ladder are located in the same plane.
Preferably, the main ladder comprises two bracket rods and a plurality of pedal rods connected between the two bracket rods, and the top ends of the two bracket rods are respectively and rotatably connected with the top end of the frame; the auxiliary ladder comprises two connecting rods which are arranged on the inner sides of the two support rods, the two connecting rods are parallel to each other, and the bottom ends of the two connecting rods are respectively and rotatably connected with the bottom ends of the frames; the secondary ladder comprises two fixing rods which are respectively arranged on two sides of the main ladder, wherein the two fixing rods are parallel to each other, and the bottom ends of the two fixing rods are respectively and rotatably connected with the bottom ends of the frames.
Preferably, the first sliding piece is a pin shaft vertically connected to the bottom end of the support rod, and the second sliding piece is a bolt vertically connected to the top end of the connecting rod.
Preferably, a nut is arranged at the end of the bolt, and the nut is matched with the bolt to fix the ladder.
Preferably, the top and bottom of the frame are respectively provided with a connecting plate, the top of the bracket rod, the bottom of the connecting rod and the bottom of the fixing rod are respectively provided with a rotating shaft, and the rotating shafts are rotatably connected to the connecting plates.
Preferably, a height space exists between the bottom end of the main ladder and the bottom end of the frame.
The invention also aims to solve the problems of laborious use, poor climbing comfort and low safety performance of the conventional ladder in the tank.
In order to solve the above problems, the present invention further provides a tank, which includes a tank body, a frame connected to the outside of the tank body, and a ladder stand provided on the frame, wherein the ladder stand is provided at an end or both sides of the frame.
According to the technical scheme, the beneficial effects of the invention are as follows:
The main ladder and the auxiliary ladder in the crawling ladder can be connected in a sliding way, and the included angle between the main ladder and the auxiliary ladder can be changed by sliding the main ladder and the auxiliary ladder relatively, so that the included angle between the main ladder and the plane where the tank box frame is positioned is changed, and the main ladder is in an inclined state.
Drawings
Fig. 1 is a schematic view of a ladder according to the present invention in a retracted state.
Fig. 2 is a partial enlarged view at a in fig. 1.
Figure 3 is a side view of a ladder embodiment of the invention in use.
The reference numerals are explained as follows: 1. a frame; 11. a vertical beam; 12. a cross beam; 121. a top beam; 122. a bottom cross beam; 13. a connecting plate; 2. a ladder stand; 21. a main ladder; 211. a bracket rod; 212. a pedal lever; 22. an auxiliary ladder; 221. a connecting rod; 23. a rotating shaft; 24. a first slider; 25. a first trench; 26. a secondary ladder; 261. a fixed rod; 27. a second slider; 28. a second trench; 29. and (3) a nut.
Detailed Description
Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It will be understood that the invention is capable of various modifications in various embodiments, all without departing from the scope of the invention, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the invention.
For the purpose of further illustrating the principles and structure of the present invention, preferred embodiments of the invention will now be described in detail with reference to the accompanying drawings.
The embodiment provides a tank, and the tank includes a tank body, a frame and a ladder stand. Wherein the tank body is of a tank body structure used for a common tank container, and the tank body is not described in detail herein.
Referring to fig. 1, a frame 1 is attached to the outside of a tank, and the frame 1 includes vertical beams 11 and cross beams 12. Wherein the vertical beams 11 are arranged on the circumferential side of the tank body, and the cross beams 12 comprise a top cross beam 121 positioned above the tank body and a bottom cross beam 122 positioned below the tank body.
The ladder stand 2 is provided on the frame 1, and the installation position may be an end of the frame 1 or both sides of the frame 1. The ladder 2 is in this embodiment arranged at the end of the frame 1. Correspondingly, the top beam 121 and the bottom beam 122 are provided with connecting plates 13 for installing the crawling ladder 2, and the connecting plates 13 are respectively welded and fixed with the top beam 121 and the bottom beam 122.
As shown in fig. 1 and 2, the cat ladder 2 of the present embodiment includes a main ladder 21 and a sub ladder 22. The top end of the main ladder 21 is rotatably connected with the top beam 121, the bottom end of the auxiliary ladder 22 is rotatably connected with the bottom beam 122, and the main ladder 21 and the auxiliary ladder 22 are slidably connected. The main ladder 21 and the auxiliary ladder 22 slide relatively, and the included angle between the main ladder 21 and the auxiliary ladder 22 can be changed, so that the included angle alpha between the main ladder 21 and the plane of the frame 1 is changed.
The ladder stand 2 of the present embodiment is in a retracted state when not in use, the included angle a between the main ladder 21 and the plane in which the frame 1 is located is 0 °, the main ladder 21 is in a vertical state, and the main ladder 21 and the auxiliary ladder 22 are located in the same plane. Thus, when the ladder stand 2 is retracted, a large space is not occupied, and other work of an operator can be prevented from being hindered.
Referring to fig. 3, the ladder stand 2 is in an open state when in use, and the main ladder 21 is relatively slid with the auxiliary ladder 22, so that a certain included angle is formed between the main ladder 21 and a plane where the frame 1 is located, and the main ladder 21 is changed from a vertical state to an inclined state. The main ladder 21 in an inclined state is more in accordance with the principle of ergonomics, and workers can save more labor and be safer when climbing.
Further, as shown in fig. 2, the main ladder 21 includes two relatively parallel support rods 211, and a plurality of pedal rods 212 are vertically connected between the two support rods 211, and the pedal rods 212 can be used for a worker to tread on a boarding box.
The top ends of the two support rods 211 are respectively provided with a rotating shaft 23, and the rotating shafts 23 are rotatably connected with corresponding connecting plates 13 on the top cross beam 121, so that the main ladder 21 is rotatably connected with the top cross beam 121.
The auxiliary ladder 22 is located inside the main ladder 21, and the auxiliary ladder 22 includes a pair of connecting rods 221 arranged in parallel. The height of the connecting rod 221 is smaller than that of the support rod 211, and the two connecting rods 221 can be vertically connected with the pedal rod 212 with smaller length.
The bottom ends of the pair of connecting rods 221 are also provided with rotating shafts 23, and the rotating shafts 23 are rotatably connected to the corresponding connecting plates 13 on the bottom cross beam 122, so that the auxiliary ladder 22 is rotatably connected to the bottom cross beam 122.
In order to slidably connect the main ladder 21 and the auxiliary ladder 22, the bottom ends of the two support rods 211 are respectively fixedly connected with a first sliding member 24, and the first sliding member 24 in this embodiment is a pin shaft vertically connected to the support rods 211. The two connecting rods 221 are respectively provided with a first groove 25 matched with the first sliding piece 24, and the extending direction of the first groove 25 is the same as the length direction of the auxiliary ladder 22.
The first slider 24 can move the main ladder 21 fixedly connected to the first slider 24 while sliding in the first groove 25. The main ladder 21 and the auxiliary ladder 22 slide relatively, so that the included angle between the main ladder and the auxiliary ladder is changed. Since the main ladder 21 is rotatably connected with the frame 1, the included angle alpha between the main ladder 21 and the plane of the frame 1 is changed while the included angle between the main ladder 21 and the auxiliary ladder 22 is changed.
In other preferred embodiments, the first slider 24 may be fixedly connected to the two connecting rods 221, and correspondingly, the first grooves 25 matched with the first slider 24 are provided on the bracket rod 211. Thus, the first sliding piece 24 moves in the first groove 25 to drive the auxiliary ladder 22 to move on the main ladder 21, and the included angle between the main ladder 21 and the auxiliary ladder 22 is changed similarly, so that the main ladder 21 is changed from a vertical state to an inclined state.
Furthermore, in the cat ladder 2 of the other preferred embodiment, the cat ladder 2 includes only the main ladder 21 and the auxiliary ladder 22. When the main ladder 21 and the auxiliary ladder 22 slide relatively in an inclined state, the weight of the climber can press against the main ladder 21 to fix the main ladder 21 in an inclined state. However, in order to prevent accidents caused by sliding of the first slider 24 in the first groove 25 during climbing, a locking member may be provided on the first slider 24 to stably fix the main ladder 21 in an inclined state, improving safety of the ladder 2 in use.
In order to make the structure of the ladder 2 of the present embodiment more stable, the ladder 2 further includes a sub-ladder 26 as shown in fig. 1 and 2.
The secondary ladder 26 includes two opposite parallel fixing bars 261, and the two fixing bars 261 are respectively located at the outer sides of the two bracket bars 211. The length of the fixed lever 261 is also smaller than the length of the holder lever 211 but larger than the length of the connection lever 221.
The bottom ends of the two fixed rods 261 are respectively provided with a rotating shaft 23, and the rotating shafts 23 of the fixed rods 261 are rotatably connected to the connecting plates 13 of the bottom cross beams 122, so that the secondary ladder 26 is rotatably connected to the bottom cross beams 122.
The secondary ladder 26 and the main ladder 21 are also slidably connected, in this embodiment, the top ends of the two fixed rods 261 are respectively and fixedly connected with a second sliding member 27, and the second sliding member 27 is a bolt vertically connected to the fixed rods 261.
As shown in fig. 2, the end of the bolt is provided with a nut 29. When the nut 29 is screwed, the second slider 27 cannot slide in the second groove 28, so that the main ladder 21 can be fixed in a vertical state or an inclined state, and the stability of the ladder stand 2 in use is ensured.
When the nuts 29 are unlocked, the main ladder 21, the auxiliary ladder 22 and the auxiliary ladder 26 can slide relatively, so that the main ladder 21 is switched between a vertical state and an inclined state, and the included angle alpha between the main ladder 21 and the plane where the frame 1 is positioned is 0-10 degrees. The main ladder 21 slides to alpha of 5-10 degrees, the nut 29 can be locked, and at the moment, the main ladder 21 is inclined so that an operator can climb conveniently.
When the main ladder 21 is inclined, as shown in fig. 3, a triangle structure can be formed between the main ladder 21 and the auxiliary ladder 22, the auxiliary ladder 26, thereby increasing the strength of the overall ladder stand 2.
For the tank of the present embodiment, when a worker needs to perform a boarding operation, the locking of the nut 29 needs to be released first, the bottom end of the main ladder 21 is lifted upward, the main ladder 21 is rotated outside the tank body with the top end as the center, and at the same time, the first slider 24 moves toward the top end of the auxiliary ladder 22 in the first groove 25, and the second slider 27 moves toward the bottom end of the main ladder 21 in the second groove 28. When the included angle alpha between the main ladder 21 and the plane where the frame 1 is located is a set degree, the use state shown in fig. 3 is formed, the main ladder 21 is fixed by screwing the nut 29, and at this time, the main ladder 21 is in an inclined state, so that a worker can climb to the top of the tank smoothly in a labor-saving manner.
When the worker finishes the boarding operation, the locking state of the nut 29 is released, the bottom end of the main ladder 21 is pulled downwards, the main ladder 21 rotates towards the tank body, at the moment, the first sliding piece 24 moves towards the bottom end of the auxiliary ladder 22 in the first groove 25, the second sliding piece 27 moves towards the top end of the main ladder 21 in the second groove 28 until the included angle alpha between the main ladder 21 and the plane of the frame 1 is 0 degrees, the nut 29 is screwed down, the main ladder 21 is fixed in the vertical state, and the worker can correspondingly perform other operations.
In this embodiment, the connection plate 13 for installing the secondary ladder 26 and the connection plate 13 for installing the secondary ladder 22 are located on the same straight line, so that when the main ladder 21 is in a vertical state, the main ladder 21, the secondary ladder 22 and the secondary ladder 26 are located on the same plane, so that the cat ladder 2 does not occupy redundant space and the inconvenience in transportation of the tank is avoided.
Meanwhile, a certain height interval exists between the bottom end of the main ladder 21 and the bottom cross beam 122, so that the auxiliary ladder 22 and the auxiliary ladder 26 are convenient to install, and the main ladder 21 is convenient to open and retract.
Therefore, in the crawling ladder of the embodiment, the main ladder is respectively in sliding connection with the auxiliary ladder and the auxiliary ladder, and the relative sliding of the main ladder, the auxiliary ladder and the auxiliary ladder changes the included angle between the main ladder and the plane where the tank frame is located, so that the main ladder can be switched between the vertical state and the inclined state. When the main ladder is in an inclined state, compared with the traditional vertically-clung ladder, the ladder of the embodiment is more in accordance with the principle of ergonomics, so that workers can more save labor when climbing up and down the ladder, and the ladder is convenient and comfortable and has higher safety; in addition, the ladder stand can be folded when not in use, so that excessive space is not occupied, and inconvenience in transportation is not caused.
While the invention has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and 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.
Claims (8)
1.A cat ladder disposed on a frame of a tank, the cat ladder comprising:
A main ladder, the top end of which is rotatably connected with the top end of the frame;
the bottom end of the auxiliary ladder is rotatably connected with the bottom end of the frame;
the top end of the auxiliary ladder is slidably connected with the bottom end of the main ladder, and the main ladder and the auxiliary ladder slide relatively to change an included angle between the main ladder and the auxiliary ladder;
The bottom end of the main ladder is fixedly connected with a first sliding part, and the auxiliary ladder is provided with a first groove matched with the first sliding part; the first sliding piece slides in the first groove so as to change the included angle between the main ladder and the auxiliary ladder; the first slider can be fastened in the first groove by a locking member provided thereon;
The crawling ladder further comprises a secondary ladder, the bottom end of the secondary ladder is rotatably connected with the bottom end of the frame, and the top end of the secondary ladder is fixedly connected with a second sliding piece; the main ladder is provided with a second groove matched with the second sliding piece, and the second sliding piece slides in the second groove so as to change the included angle between the main ladder and the secondary ladder; the second slider is provided as a bolt and can be fastened in the second groove by a nut.
2. The ladder of claim 1, wherein an included angle between the main ladder and a plane in which the frame is located is 0 ° -10 ° when the first slider or the second slider slides;
When the included angle between the main ladder and the plane where the frame is located is 0 DEG, the main ladder, the auxiliary ladder and the auxiliary ladder are located in the same plane.
3. The ladder stand of claim 1, wherein the main ladder comprises two support bars and a plurality of pedal bars connected between the two support bars, the top ends of the two support bars being rotatably connected with the top ends of the frames, respectively;
The auxiliary ladder comprises two connecting rods which are arranged on the inner sides of the two support rods, the two connecting rods are parallel to each other, and the bottom ends of the two connecting rods are respectively and rotatably connected with the bottom ends of the frames;
the secondary ladder comprises two fixing rods which are respectively arranged on two sides of the main ladder, wherein the two fixing rods are parallel to each other, and the bottom ends of the two fixing rods are respectively and rotatably connected with the bottom ends of the frames.
4. The ladder of claim 3, wherein the first slider is a pin vertically attached to the bottom end of the support rod and the second slider is a bolt vertically attached to the top end of the connecting rod.
5. The ladder of claim 4, wherein the end of the bolt is provided with a nut that is adapted to secure the ladder.
6. A ladder according to claim 3, wherein the top and bottom ends of the frame are provided with connection plates, and the top ends of the bracket bars, the bottom ends of the connection bars and the bottom ends of the fixing bars are provided with rotation shafts, respectively, which are rotatably connected to the connection plates.
7. The crawling ladder of claim 1, wherein a height separation exists between the bottom end of said main ladder and the bottom end of said frame.
8. The utility model provides a jar case, includes the jar body, connects jar external frame and set up the cat ladder on the frame, its characterized in that, the cat ladder is any one of claims 1~7, and this cat ladder sets up the tip or the both sides of frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611129320.2A CN108609307B (en) | 2016-12-09 | 2016-12-09 | Tank and ladder thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611129320.2A CN108609307B (en) | 2016-12-09 | 2016-12-09 | Tank and ladder thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108609307A CN108609307A (en) | 2018-10-02 |
| CN108609307B true CN108609307B (en) | 2024-05-03 |
Family
ID=63643969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611129320.2A Active CN108609307B (en) | 2016-12-09 | 2016-12-09 | Tank and ladder thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108609307B (en) |
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| Publication number | Publication date |
|---|---|
| CN108609307A (en) | 2018-10-02 |
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