CN217028756U - Labor-saving fire ladder capable of being quickly stretched - Google Patents
Labor-saving fire ladder capable of being quickly stretched Download PDFInfo
- Publication number
- CN217028756U CN217028756U CN202123383343.5U CN202123383343U CN217028756U CN 217028756 U CN217028756 U CN 217028756U CN 202123383343 U CN202123383343 U CN 202123383343U CN 217028756 U CN217028756 U CN 217028756U
- Authority
- CN
- China
- Prior art keywords
- ladder
- ladder frame
- fixed
- pulleys
- roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 abstract description 2
- 238000000429 assembly Methods 0.000 abstract description 2
- 230000008602 contraction Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Images
Landscapes
- Ladders (AREA)
Abstract
A labor-saving fire ladder capable of stretching quickly comprises at least two ladder frames, wherein the ladder frames are provided with pulley blocks, ropes and rolling assemblies, the pulley blocks comprise fixed pulleys and movable pulleys, the fixed pulleys are at least two and fixedly mounted above a first ladder frame, the number of the movable pulleys is the same as that of the fixed pulleys or less than that of the fixed pulleys, and the movable pulleys are fixedly mounted below a second ladder frame adjacent to the first ladder frame. The rope is provided with a first fixed end and a force application end, and the body of the rope is sequentially in alternate sliding fit with the fixed pulley and the movable pulley from the force application end to the first fixed end. The roller components comprise a roller and a chute, one of the roller and the chute is arranged on the first ladder frame, the other one of the roller and the chute is arranged on the second ladder frame, the chute is a V-shaped groove, the wheel surface of the roller is provided with an inverted V-shaped bulge, the roller is embedded into the chute, and two sides of the wheel surface of the roller are attached to two side groove walls of the chute. The pulley block and the rolling assembly which are formed by a plurality of pulleys are used, so that the effects of saving labor, improving efficiency and reducing abrasion among the ladder frames during extension and contraction of the fire ladder are achieved.
Description
Technical Field
The utility model relates to the technical field of fire ladders, in particular to a labor-saving fire ladder capable of being quickly stretched.
Background
With the continuous development of society and the updating and upgrading of technology, the living standard of people is also increasingly improved, and high buildings and mansions are pulled out of the ground and become one of the important marks of urbanization. However, as floors grow higher, fire safety issues are becoming more compelling. When a fire disaster occurs in a high building, a labor-saving effective fire ladder is needed to be used to reach a fire disaster point for fire fighting and rescue.
The fire ladder is an important fire fighting device for providing fire fighters to fight fire at high altitude. The fire ladder is compared in traditional ladder, and its length is longer, in order to guarantee that fire ladder length is enough and be convenient for place in the fire engine, often adopts the design of many ladder framves shrink. However, in the actual use process, the existing fire ladder on the market has the following problems:
1. among the prior art, in order to realize the function of extending the fire ladder frame, the assembly pulley that uses single fixed pulley and single movable pulley to constitute comes control fire ladder frame to go up and down, and the fire fighter need use enough big strength can expand the ladder frame, and this process both wastes time and energy, and rescue efficiency is lower.
2. Among the prior art, at flexible fire ladder frame in-process, there is sliding friction between two adjacent fire ladder stands, causes the damage to ladder itself.
Therefore, it is an object of the present invention to overcome the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The utility model aims to provide a labor-saving fire ladder capable of being quickly stretched.
In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a laborsaving fire ladder that can stretch out and draw back fast which innovation lies in:
the ladder comprises at least two ladder frames, wherein two adjacent ladder frames are in sliding fit; the ladder frame comprises two upright posts arranged in parallel and a plurality of steps connected between the two upright posts.
The device also comprises a pulley block, a rope and a rolling component.
The pulley block comprises fixed pulleys and movable pulleys, wherein the number of the fixed pulleys is at least two, the fixed pulleys are fixedly arranged above the first ladder frame, the number of the movable pulleys is the same as that of the fixed pulleys or is one less than that of the fixed pulleys, and the movable pulleys are fixedly arranged below a second ladder frame adjacent to the first ladder frame.
The rope is provided with a first fixed end and a force application end, the first fixed end is fixed on the ladder frame, and the body of the rope is sequentially in alternate sliding fit with the fixed pulleys and the movable pulleys from the force application end to the first fixed end.
The rolling assembly is composed of a roller and a sliding groove, one of the roller and the sliding groove is arranged on the first ladder frame, and the other one of the roller and the sliding groove is arranged on the second ladder frame, so that the sliding connection of two adjacent ladder frames is formed.
The runner is a V-shaped runner, the wheel surface of the roller is provided with an inverted V-shaped bulge, the roller is embedded into the runner, and two sides of the wheel surface of the roller are attached to two side groove walls of the runner.
The relevant content in the above technical solution is explained as follows:
1. in the above scheme, when the fire ladder further comprises a third ladder frame, the third ladder frame is adjacent to the second ladder frame. The second ladder frame further comprises a roller for the steel wire rope, the roller for the steel wire rope is in sliding fit with the steel wire rope, the steel wire rope is provided with two fixed ends, one fixed end is fixedly arranged above the first ladder frame, and the other fixed end is fixedly arranged below the third ladder frame.
2. In the above scheme, when the number of the movable pulleys is the same as that of the fixed pulleys, the rope body is in sliding fit with the pulley block from the force application end to the first fixed end according to the sequence of the fixed pulleys, the movable pulleys, the fixed pulleys and the movable pulleys.
3. In the above scheme, when the number of the movable pulleys is one less than that of the fixed pulleys, the rope body is in sliding fit with the pulley block from the force application end to the first fixed end according to the sequence of 'fixed pulleys-movable pulleys-fixed pulleys'.
4. In the scheme, the force application end is suspended, and a fireman can pull the force application end by applying a certain force to extend the fire ladder.
5. In the above scheme, the wheel face both sides of gyro wheel are laminated in the both sides cell wall of spout, do like this and can further reduce frictional force, promote the reliability of combining between the ladder frame, reduce the left and right offset of gyro wheel when rolling in the spout.
6. In the above scheme, when the number of the movable pulleys is equal to that of the fixed pulleys, the first fixed end of the rope is arranged on the first ladder frame.
7. In the above scheme, when the number of the movable pulleys is one less than that of the fixed pulleys, the first fixed end of the rope is arranged on the second ladder frame.
8. In the scheme, the pulley block is installed on the step, the fixed pulley is horizontally arranged on the step above the first ladder frame, and the movable pulley is horizontally arranged on the step below the second ladder frame.
9. In the scheme, the pulley block is arranged on the step, the fixed pulleys are vertically arranged on the step above the first ladder frame, and the movable pulleys are vertically arranged on the step below the second ladder frame.
10. In the above scheme, the pulley blocks are installed on two sides of the ladder frame, the fixed pulleys are vertically arranged above the side surface of the first ladder frame, and the movable pulleys are arranged below the side surface of the second ladder frame.
The working principle of the utility model is as follows:
a labor-saving fire ladder capable of stretching quickly comprises at least two ladder frames, wherein the ladder frames are provided with pulley blocks, ropes and rolling assemblies, the pulley blocks comprise fixed pulleys and movable pulleys, the fixed pulleys are at least two and fixedly mounted above a first ladder frame, the number of the movable pulleys is the same as that of the fixed pulleys or less than that of the fixed pulleys, and the movable pulleys are fixedly mounted below a second ladder frame adjacent to the first ladder frame. The rope is provided with a first fixed end and a force application end, and the body of the rope is sequentially in alternate sliding fit with the fixed pulley and the movable pulley from the force application end to the first fixed end. The roller components comprise a roller and a sliding groove, one of the roller and the sliding groove is arranged on the first ladder frame, the other one of the roller and the sliding groove is arranged on the second ladder frame, the sliding groove is a V-shaped groove, the wheel surface of the roller is provided with an inverted V-shaped protrusion, the roller is embedded into the sliding groove, and two sides of the wheel surface of the roller are attached to two side groove walls of the sliding groove. The pulley block and the rolling assembly which are formed by a plurality of pulleys are used, so that the effects of saving labor, improving efficiency and reducing abrasion among the ladder frames during extension and contraction of the fire ladder are achieved.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages and effects:
1. because the utility model adopts the pulley block consisting of a plurality of fixed pulleys and movable pulleys and matches with the ropes which are in sliding fit with the fixed pulleys and the movable pulleys alternately, the fire ladder can be stretched to the limit height quickly and efficiently in a labor-saving way.
2. Because the utility model adopts the roller component, the chute is a V-shaped chute, the wheel surface of the roller is provided with the inverted V-shaped bulge, the roller is embedded into the chute, and the two sides of the wheel surface of the roller are attached to the two side groove walls of the chute, so that the sliding friction between the upright posts is changed into rolling friction, the abrasion between the upright posts is reduced, the service life of the fire ladder is prolonged, and meanwhile, the fire ladder frame can be stretched in a labor-saving manner.
Drawings
FIG. 1 is a schematic diagram of the extension mode of the fire ladder of the embodiment of the utility model;
FIG. 2 is a schematic structural view of a labor-saving fire ladder according to an embodiment of the present invention;
FIG. 3 is an enlarged view of FIG. 2 at A;
FIG. 4 is an enlarged view of FIG. 2 at B;
FIG. 5 is a rear view of a labor saving fire ladder of an embodiment of the present invention;
FIG. 6 is an enlarged view at C of FIG. 5;
FIG. 7 is a schematic view of the rolling assembly of the labor-saving fire ladder according to the embodiment of the present invention;
FIG. 8 is an enlarged view of FIG. 7 at D;
FIG. 9 is a side view of the power saving fire ladder of the embodiment of the present invention in a closed state;
FIG. 10 is a front view of a power saving fire ladder of an embodiment of the present invention in a closed position;
FIG. 11 is a side view of the saving effort ladder of an embodiment of the present invention in a semi-deployed state;
FIG. 12 is a front view of a saving ladder according to an embodiment of the present invention in a half-deployed state;
FIG. 13 is a side view of the power saving fire ladder of the embodiment of the present invention in an extended state;
FIG. 14 is a front view of the power saving fire ladder of the embodiment of the present invention in an extended state;
fig. 15 is a schematic diagram of the operation of the extended state of another embodiment of the present invention.
The reference numbers in the above figures are as follows: 1. a first ladder frame; 2. a first fixed pulley; 3. a second fixed pulley; 4. a second ladder frame; 5. a first movable pulley; 6. a second movable pulley; 7. a rope; 8. a force application end; 9. a first fixed end; 10. a roller for the wire rope; 11. a third ladder frame; 12. a wire rope; 13. a second fixed end; 14. a third fixed end; 15. a first V-wheel; 16. a second V-wheel; 17. a first V-shaped chute; 18. a second V-shaped chute.
Detailed Description
The utility model is further described below with reference to the following figures and examples:
the present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the disclosure may be shown and described, and which, when modified and varied by the techniques taught herein, can be made by those skilled in the art without departing from the spirit and scope of the disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms "a", "an", "the" and "the", as used herein, also include the plural forms.
The terms "first," "second," and the like, as used herein, are not intended to be limited to a particular order or sequence, nor are they intended to be used to limit the scope of the present disclosure, but only to distinguish components or operations described by the same terms.
As used herein, "connected" or "positioned" refers to two or more elements or devices being in direct or indirect physical contact with each other, and may also refer to two or more elements or devices being in operation or action with each other.
As used herein, the terms "comprising," "including," "having," and the like are open-ended terms that mean including but not limited to.
As used herein, the term (terms), unless otherwise indicated, shall generally have the ordinary meaning as commonly understood by one of ordinary skill in the art, in this written description and in the claims. Certain words used to describe the disclosure are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the disclosure.
The terms "upper" and "lower" are used herein as directional terms, and are used only for describing the positional relationship between the structures, and are not intended to limit the protection response and the practical implementation of the present invention.
Example (b): labor-saving fire ladder capable of being quickly stretched
As shown in fig. 1-8, the labor-saving fire ladder capable of rapidly extending and retracting comprises three ladder frames, including a first ladder frame 1, a second ladder frame 4 and a third ladder frame 11, wherein the first ladder frame 1 is adjacent to the second ladder frame 4, the second ladder frame 4 is adjacent to the third ladder frame 11, and two adjacent ladder frames are in sliding fit. Each ladder frame comprises two upright posts arranged in parallel and a plurality of steps connected between the two upright posts.
The labor-saving fire ladder capable of being rapidly stretched and retracted further comprises a pulley block, a rope 7 and a rolling assembly.
The assembly pulley includes fixed pulley and movable pulley, the fixed pulley has two, including first fixed pulley 2 and second fixed pulley 3, first fixed pulley 2 and second fixed pulley 3 and every first pulley support roll connection that corresponds. Every first pulley support is connected on first support connecting piece through using the nut, first support connecting piece with the top of first ladder frame 1 is stepped on the chucking cooperation and is connected. The number of the movable pulleys is the same as that of the fixed pulleys, the movable pulleys comprise first movable pulleys 5 and second movable pulleys 6, and the first movable pulleys 5 and the second movable pulleys 6 are in rolling connection with each corresponding second pulley support. Every the second pulley support is connected on second leg joint spare through using the nut, second leg joint spare is stepped on the chucking cooperation with the below of a second ladder frame 4 adjacent with first ladder frame 1 and is connected.
The rope 7 has a first fixing end 9 and a force application end 8, and the first fixing end 9 is fixed on the step above the first ladder frame 1. The body of the rope 7 is in sliding fit with the first fixed pulley 2, the first movable pulley 5, the second fixed pulley 3 and the second movable pulley 6 in sequence from the force application end 8 to the first fixed end 9, the force application end 8 is arranged in a suspended mode, and a fireman pulls the force application end 8 by applying a certain force to stretch the fire ladder.
The rolling assembly is composed of a roller and a sliding groove, the sliding groove is a V-shaped groove, an inverted V-shaped protrusion is arranged on the wheel surface of the roller, the roller is embedded into the sliding groove, and two sides of the wheel surface of the roller are attached to two side groove walls of the sliding groove.
The first V-shaped wheel 15 is fixedly arranged at the upper end of the upright column of the first ladder frame 1, and the first V-shaped sliding groove 17 is arranged on the upright column surface of the second ladder frame 4 opposite to the first ladder frame 1 to form sliding connection between the first ladder frame 1 and the second ladder frame 4. The second V-shaped wheel 16 is fixedly arranged at the upper end of the upright post of the second ladder frame 4, and the second V-shaped sliding groove 18 is arranged on the upright post surface of the third ladder frame 11 opposite to the second ladder frame 4, so as to form the sliding connection between the second ladder frame 4 and the third ladder frame 11.
The wheel face both sides of gyro wheel laminate in the both sides cell wall of spout, do so and can further reduce frictional force, promote the reliability of combining between the ladder frame, reduce the left and right sides offset of gyro wheel when rolling in the spout.
The specific working principle of the embodiment of the utility model is summarized as follows:
as shown in fig. 9 to 14, when a firefighter fixes the fire ladder on the ground, the force applied to the force applying end 8 of the rope 7 is applied to pull the second ladder frame 4 of the extension ladder, the first fixed pulley 2 and the second fixed pulley 3 are kept incomprehensible above the first ladder frame 1, the rope 7 transmits power to pull the first movable pulley 5 and the second movable pulley 6 to move upwards, and the first movable pulley 5 and the second movable pulley 6 are fixed below the second ladder frame 4 to step, so that the second ladder frame 4 of the fire ladder is driven to extend upwards. The third ladder frame 11 is by being fixed in the gyro wheel 10 for the wire rope that second ladder frame 4 top was marked time and two stiff ends are located the wire rope 12 combined action that first ladder frame 1 top was marked time and third ladder frame 11 below was marked time respectively, when second ladder frame 4 extended, drives third ladder frame 11 and upwards extends simultaneously. In the process that second ladder frame 4 and third ladder frame 11 expand, through with the gyro wheel is in slide in the spout and replace the stand of two ladder frames originally to slide, reduced frictional force, save the fire fighter and extend the required power of exerting of fire ladder.
Other embodiments and structural variations of the present invention are described below:
in the above embodiment, the pulley block includes two fixed pulleys and two movable pulleys, but the present invention is not limited to this, and as shown in fig. 1, the pulley block may also be a structure composed of two fixed pulleys and one movable pulley, in which case, the first fixed end 9 of the rope 7 is fixed on the step below the second ladder frame 4, and the body of the rope 7 is in sliding fit with the first fixed pulley 2, the first movable pulley 5 and the second fixed pulley 3 in sequence from the force application end 8 to the first fixed end 9.
The above embodiments are only for illustrating the technical idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the protection scope of the present invention by this means. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (8)
1. The utility model provides a laborsaving fire ladder that can stretch out and draw back fast which characterized in that:
the ladder comprises at least two ladder frames, wherein two adjacent ladder frames are in sliding fit; the ladder frame comprises two upright posts arranged in parallel and a plurality of steps connected between the two upright posts;
the device also comprises a pulley block, a rope (7) and a rolling component;
the pulley block comprises fixed pulleys and movable pulleys, the number of the fixed pulleys is at least two, the fixed pulleys are fixedly arranged above the first ladder frame (1), the number of the movable pulleys is the same as or less than that of the fixed pulleys by one, and the movable pulleys are fixedly arranged below a second ladder frame (4) adjacent to the first ladder frame (1);
the rope (7) is provided with a first fixed end (9) and a force application end (8), the first fixed end (9) is fixed on the ladder frame, and the body of the rope (7) is sequentially in alternate sliding fit with the fixed pulley and the movable pulley from the force application end (8) to the first fixed end (9);
the rolling assembly consists of a roller and a sliding chute, one of the roller and the sliding chute is arranged on the first ladder frame (1), and the other one of the roller and the sliding chute is arranged on the second ladder frame (4), so that the sliding connection of two adjacent ladder frames is formed;
the sliding groove is a V-shaped sliding groove, the wheel surface of the roller is provided with an inverted V-shaped bulge, the roller is embedded into the sliding groove, and two sides of the wheel surface of the roller are attached to two side groove walls of the sliding groove.
2. A rapidly extendable and retractable saving fire ladder as claimed in claim 1, wherein: the fire ladder further comprises a third ladder frame (11), and the third ladder frame (11) is adjacent to the second ladder frame (4).
3. A rapidly extendable and retractable power saving fire ladder as claimed in claim 2, wherein: the steel wire rope sliding-fit elevator is characterized in that a roller (10) for the steel wire rope is further arranged above the second ladder frame (4), the roller (10) for the steel wire rope is in sliding fit with the steel wire rope (12), the steel wire rope (12) is provided with two fixed ends, one fixed end is fixedly arranged above the first ladder frame (1), and the other fixed end is fixedly arranged below the third ladder frame (11).
4. The rapidly extendable and retractable labor-saving fire ladder according to claim 1, wherein: when the number of the movable pulleys is equal to that of the fixed pulleys, the first fixed end (9) of the rope (7) is arranged on the first ladder frame (1).
5. The rapidly extendable and retractable labor-saving fire ladder according to claim 1, wherein: when the number of the movable pulleys is one less than that of the fixed pulleys, the first fixed end (9) of the rope (7) is arranged on the second ladder frame (4).
6. A rapidly extendable and retractable saving fire ladder as claimed in claim 1, wherein: the pulley block is installed on marking time, the fixed pulley level sets up on marking time above first ladder frame (1), the movable pulley level sets up on marking time below second ladder frame (4).
7. A rapidly extendable and retractable saving fire ladder as claimed in claim 1, wherein: the pulley block is installed on the step, the fixed pulleys are vertically arranged on the step above the first ladder frame (1), and the movable pulleys are vertically arranged on the step below the second ladder frame (4).
8. The rapidly extendable and retractable labor-saving fire ladder according to claim 1, wherein: the pulley blocks are installed on two sides of the ladder frame, the fixed pulleys are vertically arranged above the side face of the first ladder frame (1), and the movable pulleys are arranged below the side face of the second ladder frame (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123383343.5U CN217028756U (en) | 2021-12-29 | 2021-12-29 | Labor-saving fire ladder capable of being quickly stretched |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123383343.5U CN217028756U (en) | 2021-12-29 | 2021-12-29 | Labor-saving fire ladder capable of being quickly stretched |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217028756U true CN217028756U (en) | 2022-07-22 |
Family
ID=82442948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123383343.5U Active CN217028756U (en) | 2021-12-29 | 2021-12-29 | Labor-saving fire ladder capable of being quickly stretched |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217028756U (en) |
-
2021
- 2021-12-29 CN CN202123383343.5U patent/CN217028756U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201610631U (en) | Traction and movable type lifting platform for construction | |
| CN105433855B (en) | Frame-type multifunctional stretches window cleaning equipment | |
| CN109025336B (en) | Building construction safety protection device and construction method thereof | |
| CN211600148U (en) | Green construction monitoring device convenient to installation | |
| CN112225052A (en) | Energy-concerving and environment-protective elevator elevating system | |
| CN112227696B (en) | Hanging basket device for pitched roof and construction method thereof | |
| CN217028756U (en) | Labor-saving fire ladder capable of being quickly stretched | |
| CN211341325U (en) | But quick assembly disassembly's glass curtain wall structure | |
| CN213059933U (en) | Double-beam bridge crane | |
| CN205422378U (en) | Window structure of wafing | |
| CN108193867A (en) | A kind of construction platform of safety durable | |
| CN215803088U (en) | Attached scaffold lifting height control device | |
| CN205312810U (en) | Elevator with prevent falling net | |
| CN211172392U (en) | Steel construction skirt house device that can stretch out and draw back automatically | |
| CN113047640A (en) | Steel truss jacking equipment and using method thereof | |
| CN209967522U (en) | Rope bridge | |
| CN209538759U (en) | Applied to the jack up high-building construction workshop on climbing frame | |
| CN208605120U (en) | It is a kind of to use stable aerial ladder | |
| CN213742203U (en) | Movable operation frame for construction engineering | |
| CN207776399U (en) | A kind of construction platform for preventing from falling | |
| CN113250090A (en) | Climbing device of light hydraulic climbing formwork | |
| CN220451478U (en) | Roof protection structure | |
| CN218990993U (en) | Protective shed for constructional engineering | |
| CN220294001U (en) | Aloft work anti-falling device | |
| CN218668442U (en) | Novel guide tracked frame of climbing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |