阅读说明：本技术 一种高空救援专用消防车梯架举升机构 (Special fire engine ladder frame lifting mechanism for high-altitude rescue ) 是由 代磊 冷俐 郭少平 陈苗 刘涛 高润谦 席德明 张昕 于 2020-12-29 设计创作，主要内容包括：本发明涉及一种高空救援专用消防车梯架举升机构,包括架体,所述架体包括第一支杆,与第一支杆平行的第二支杆,转动连接在第一支杆和第二支杆底部的水平滑座；所述第一支杆背离第二支杆的一侧中间位置连接有举升油缸,所述举升油缸的伸缩杆转动连接在第一支杆上；所述第一支杆背离第二支杆的一侧转动连接有第三支杆,所述水平滑座上设有锁紧组件,用以控制水平滑座的滑动。本发明能够起到支撑梯架,分担上梯举升油缸负重的作用,具有增强梯架安全性,增加梯架稳定性的技术效果。(The invention relates to a special fire fighting truck ladder lifting mechanism for high-altitude rescue, which comprises a frame body, wherein the frame body comprises a first supporting rod, a second supporting rod parallel to the first supporting rod and a horizontal sliding seat rotatably connected to the bottoms of the first supporting rod and the second supporting rod; a lifting oil cylinder is connected to the middle position of one side, away from the second support rod, of the first support rod, and a telescopic rod of the lifting oil cylinder is rotatably connected to the first support rod; one side of the first supporting rod, which deviates from the second supporting rod, is rotatably connected with a third supporting rod, and a locking assembly is arranged on the horizontal sliding seat and used for controlling the sliding of the horizontal sliding seat. The invention can support the ladder frame and share the load of the lifting oil cylinder of the ladder, and has the technical effects of enhancing the safety of the ladder frame and increasing the stability of the ladder frame.)

1. The utility model provides a special fire engine ladder frame lifting mechanism of high altitude rescue, includes the support body, its characterized in that: the frame body comprises a first supporting rod (1), a second supporting rod (2) parallel to the first supporting rod (1), and a horizontal sliding seat (4) rotatably connected to the bottoms of the first supporting rod (1) and the second supporting rod (2); a lifting oil cylinder (6) is connected to the middle position of one side, away from the second supporting rod (2), of the first supporting rod (1), and a telescopic rod of the lifting oil cylinder (6) is rotatably connected to the first supporting rod (1); one side of the first supporting rod (1) departing from the second supporting rod (2) is rotatably connected with a third supporting rod (3), and a locking assembly (5) is arranged on the horizontal sliding seat (4) and used for controlling the sliding of the horizontal sliding seat (4).

2. The special fire engine ladder lifting mechanism for high altitude rescue as claimed in claim 1, wherein: the first supporting rod (1), the second supporting rod (2), the lifting oil cylinder (6) and the horizontal sliding seat (4) are provided with at least two groups.

3. The special fire engine ladder lifting mechanism for high altitude rescue as claimed in claim 2, wherein: a cross rod (7) is fixedly connected between every two adjacent first supporting rods (1).

4. The special fire engine ladder lifting mechanism for high altitude rescue as claimed in claim 1, wherein: the locking assembly (5) comprises a strip-shaped toothed plate (51), a positioning cylinder (52) and a locking plate (53), a cylinder body of the positioning cylinder (52) is rotatably connected to the horizontal sliding seat (4), a telescopic rod of the positioning cylinder (52) is rotatably connected with the locking plate (53), the strip-shaped toothed plate (51) is meshed with the locking plate (53), and the end part of the locking plate (53) is rotatably connected to the horizontal sliding seat (4) through a pin shaft; the telescopic rod of the positioning cylinder (52) drives the locking plate (53) to rotate around the pin shaft when stretching.

5. The special fire engine ladder lifting mechanism for high altitude rescue as claimed in claim 1, wherein: the frame body is made of stainless steel.

6. The special fire engine ladder lifting mechanism for high altitude rescue as claimed in claim 1, wherein: the first supporting rod (1) is made of square steel, and the second supporting rod (2) and the third supporting rod (3) are made of round steel pipes.

7. The special fire engine ladder lifting mechanism for high altitude rescue as claimed in claim 1, wherein: and a reinforcing plate (11) is fixedly connected to the position of the first supporting rod (1) where the lifting oil cylinder (6) and the third supporting rod (3) are connected.

8. The special fire engine ladder lifting mechanism for high altitude rescue as claimed in claim 7, wherein: the reinforcing plate (11) is provided with a plurality of small holes (12).

Technical Field

The invention relates to the technical field of fire trucks, in particular to a ladder frame lifting mechanism of a fire truck special for high-altitude rescue.

Technical Field

With the continuous development of economy in China, the population number increases year by year, and various high-rise buildings are built more and more in order to improve the land utilization rate. The high-rise building increases the land utilization rate and brings about a plurality of potential safety hazards, such as fire. Once a fire accident occurs, the difficulty of fire extinguishment and personnel rescue of a high-rise building is high, and the rescue effect of a common fire truck is difficult to achieve. The special high-altitude fire rescue vehicle is a special high-altitude fire rescue vehicle, can meet the requirements of high-altitude fire extinguishment and people rescue, and reduces property loss and casualties.

In the prior art, the invention patent with the application number of CN110237466A discloses a special high-altitude fire rescue vehicle, which comprises a chassis, a rotary platform, a lifting platform, an ascending structure, a descending structure and a top platform. An auxiliary frame is additionally arranged on the chassis; the rotary platform is arranged on the auxiliary frame, and the rotary platform and the auxiliary frame rotate left and right by virtue of the rotary mechanism; the lifting platform is lifted through a platform lifting hydraulic cylinder and a lifting platform scissor frame on the rotary platform, the bottom end of the ascending lifting oil cylinder is fixed on the lifting platform, and the ascending lifting ladder and the ascending rotary ladder are connected in a folding mode or in a straight line mode; the lower ladder structure is arranged in the lifting platform or extends out of the lifting platform, and the lower ladder rotary ladder and the lower ladder lifting ladder are connected in a folding way or in a straight line way; the top platform is arranged at the front end of the upper ladder lifting and contracting ladder and is provided with a fire monitor. The invention has the following advantages: the ladder frame can rotate at 140 degrees left and right, and has high adaptability to the field environment; the number of people evacuated in unit time is large, and the bearing capacity is high; the integral degree of the whole vehicle is high; the automation and the safety degree are high.

The above prior art has the following disadvantages: the lifting of the rotary ladder and the lifting ladder is controlled by the lifting oil cylinder, and the weight of the rotary ladder and the lifting ladder is only born by the lifting oil cylinder. The single group of the ascending lifting oil cylinders has limited bearing capacity, and the service life of the ascending lifting oil cylinders is shortened due to load; meanwhile, only the ascending lifting oil cylinder supports, the stability of the ascending structure is poor, and the ascending lifting oil cylinder is easy to shake. Particularly, when the number of rescuers is large, unnecessary casualties can be caused due to unstable ascending structure.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the special fire truck ladder frame lifting mechanism for high-altitude rescue, which can support the ladder frame and share the load of the lifting oil cylinder of the ladder, and has the technical effects of enhancing the safety of the ladder frame and increasing the stability of the ladder frame.

The above object of the present invention is achieved by the following technical solutions:

a special fire fighting truck ladder lifting mechanism for high-altitude rescue comprises a frame body, wherein the frame body comprises a first supporting rod, a second supporting rod parallel to the first supporting rod, and a horizontal sliding seat rotatably connected to the bottoms of the first supporting rod and the second supporting rod; a lifting oil cylinder is connected to the middle position of one side, away from the second support rod, of the first support rod, and a telescopic rod of the lifting oil cylinder is rotatably connected to the first support rod; one side of the first supporting rod, which deviates from the second supporting rod, is rotatably connected with a third supporting rod, and a locking assembly is arranged on the horizontal sliding seat and used for controlling the sliding of the horizontal sliding seat.

Through adopting above-mentioned technical scheme, lift cylinder's cylinder body and the bottom of third branch rotate to be connected on lifting platform, horizontal sliding seat and lifting platform sliding connection, and locking Assembly can lock horizontal sliding seat on lifting platform. When the fire engine is in a standby state, the horizontal sliding seat is farthest away from the lower end of the lifting oil cylinder, the length of the lifting oil cylinder is shortest, and the frame body is in a folded shape; when the fire truck is used, the distance between the horizontal sliding seat and the lifting oil cylinder is adjusted according to the height of a building, and the higher the building is, the closer the horizontal sliding seat is to the lifting oil cylinder. After the locking assembly is locked, the longer the lifting oil cylinder extends out, the higher the height of the ascending structure is, and the steeper the gradient is; the shorter the lifting oil cylinder extends out, the lower the height of the ascending structure is, and the slower the gradient is.

The gravity of the ascending structure is distributed on the lifting oil cylinder, the first supporting rod, the second supporting rod and the third supporting rod, so that the load of the lifting oil cylinder is reduced, the loss of the lifting oil cylinder is reduced, and the service life of the lifting oil cylinder is prolonged; first branch and second branch have increased the stress point of going up the ladder structure, make the ladder structure more stable, reduce to rock, increase the security.

Further, the first supporting rod, the second supporting rod, the lifting oil cylinder and the horizontal sliding seat are provided with at least two groups.

Through adopting above-mentioned technical scheme, two sets of or multiunit support bodies can make the support body atress more even.

Furthermore, a cross rod is fixedly connected between every two adjacent first support rods.

By adopting the technical scheme, the cross rod can increase the stability of the first support rod and prevent the first support rod from deforming due to bearing weight; meanwhile, the cross rods can enable the two adjacent groups of first supporting rods to move synchronously, and the upper platform is kept horizontal.

Further, the locking assembly comprises a bar-shaped toothed plate, a positioning cylinder and a locking plate, a cylinder body of the positioning cylinder is rotatably connected to the horizontal sliding seat, a telescopic rod of the positioning cylinder is rotatably connected with the locking plate, the bar-shaped toothed plate is meshed with the locking plate, and the end part of the locking plate is rotatably connected to the horizontal sliding seat through a pin shaft; the telescopic link of location cylinder drives the locking plate and rotates around the round pin axle when flexible.

By adopting the technical scheme, the strip-shaped toothed plate is fixedly connected to the lifting platform, when the positioning cylinder is shortened, the locking plate is meshed with the strip-shaped toothed plate, and the horizontal sliding seat is fixed with the strip-shaped toothed plate; when the positioning cylinder extends, the locking plate rotates around the pin shaft and leaves the strip-shaped toothed plate, and the horizontal sliding seat can slide. According to the height of building, fix the corresponding position at bar pinion rack with the lock plate, lift cylinder is flexible this moment and can be realized going up and down of ladder structure. When the use is accomplished, the bar pinion rack is loosened to the lock plate, and the lift cylinder shortens to the shortest position, and the horizontal contained angle of first branch, second branch, third branch and lift cylinder this moment is minimum, and occupation space is minimum, and the structure of going up the ladder is in minimum state.

Furthermore, the frame body is made of stainless steel.

Through adopting above-mentioned technical scheme, stainless steel mass energy can avoid the emergence of rust problem, long service life.

Further, first branch is square steel, second branch with third branch is circular steel pipe.

Through adopting above-mentioned technical scheme, square steel is different with the intensity of circular steel pipe, and two kinds of structures combine to use, can play better supporting effect.

Furthermore, the first supporting rod is connected with the lifting oil cylinder and a reinforcing plate is fixedly connected to the position of the third supporting rod.

Through adopting above-mentioned technical scheme, the impetus of lifting cylinder and third branch is the position that first branch took place to buckle most easily, and the gusset plate can increase the intensity of first branch, avoids first branch to take place to buckle, prolongs the life-span of first branch.

Furthermore, a plurality of small holes are formed in the reinforcing plate.

Through adopting above-mentioned technical scheme, the aperture can reduce the weight of first branch when not reducing the intensity, reduces the quantity of material, practices thrift the cost.

In summary, the invention includes at least one of the following beneficial technical effects:

1. the gravity of the ascending structure is distributed on the lifting oil cylinder, the first supporting rod, the second supporting rod and the third supporting rod, so that the load of the lifting oil cylinder is reduced, the loss of the lifting oil cylinder is reduced, and the service life of the lifting oil cylinder is prolonged; the first supporting rod and the second supporting rod increase the stress point of the ladder-climbing structure, so that the ladder-climbing structure is more stable, the shaking is reduced, and the safety is improved;

2. the impetus of lifting cylinder and third branch is the position that first branch took place to buckle most easily, and the gusset plate can increase the intensity of first branch, avoids first branch to take place to buckle, prolongs the life-span of first branch.

Drawings

FIG. 1 is a schematic view of the entire structure of the embodiment;

fig. 2 is an enlarged schematic view of a portion a of fig. 1.

In the figure, 1, a first strut; 11. a reinforcing plate; 12. a small hole; 2. a second support bar; 3. a third support bar; 4. a horizontal slide; 5. a locking assembly; 51. a strip toothed plate; 52. positioning the air cylinder; 53. a lock plate; 6. lifting the oil cylinder; 7. a cross bar.

Detailed Description

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

Example 1

Referring to fig. 1, the special fire fighting truck ladder lifting mechanism for high altitude rescue disclosed by the invention comprises two groups of frame bodies with the same structure and made of stainless steel, wherein each group of frame bodies comprises a horizontal sliding seat 4, a locking assembly 5, a first supporting rod 1, a second supporting rod 2, a third supporting rod 3 and a lifting oil cylinder 6; the upper ends of the lifting oil cylinder 6 and the third supporting rod 3 are rotatably connected to the middle position of one side, far away from the second supporting rod 2, of the first supporting rod 1. The lower extreme of first branch 1 and second branch 2 rotates respectively and connects the both ends at horizontal slide 4, and first branch 1 is parallel to each other with second branch 2, and first branch 1 is square steel, and second branch 2 and third branch 3 are circular steel pipe.

Referring to fig. 1, by using the frame body, the gravity of the ascending structure in the prior art can be distributed on the lifting oil cylinder 6, the first support rod 1, the second support rod 2 and the third support rod 3, so that the load of the lifting oil cylinder 6 is reduced, the pressure of the driving hydraulic oil is reduced, the loss of the lifting oil cylinder 6 is reduced, and the service life of the lifting oil cylinder 6 is prolonged; first branch 1 and second branch 2 have increased the stress point of going up the ladder structure, make the ladder structure more stable, reduce and rock, increase the security.

Referring to fig. 1 and 2, the locking assembly 5 can not only fix the ascending structure, but also conveniently adjust the height of the ascending structure. The locking assembly 5 comprises a bar-shaped toothed plate 51, a positioning cylinder 52 and a locking plate 53, wherein a cylinder body of the positioning cylinder 52 is rotationally connected to the horizontal sliding seat 4, a telescopic rod of the positioning cylinder 52 is rotationally connected with the locking plate 53, the bar-shaped toothed plate 51 is meshed with the locking plate 53, and the end part of the locking plate 53 is rotationally connected to the horizontal sliding seat 4 through a pin shaft; the telescopic rod of the positioning cylinder 52 drives the locking plate 53 to rotate around the pin shaft when stretching.

Referring to fig. 1 and 2, the bar-shaped toothed plate 51 is fixedly connected to the lifting platform, when the positioning cylinder 52 is shortened, the locking plate 53 is engaged with the bar-shaped toothed plate 51, and the horizontal sliding seat 4 is fixed with the bar-shaped toothed plate 51; when the positioning cylinder 52 extends, the locking plate 53 rotates around the pin shaft and leaves the strip-shaped toothed plate 51, and the horizontal sliding seat 4 can automatically perform front-back sliding adjustment in cooperation with the driving of the lifting oil cylinder 6

Referring to fig. 1 and 2, when the fire fighting truck is in a standby state, the locking plate 53 is farthest away from the lower end of the lifting oil cylinder 6, the lifting oil cylinder 6 is shortest in length, and the frame body is in a folded shape; when the fire engine is used, the locking position of the locking plate 53 on the strip-shaped toothed plate 51 is adjusted according to the building height, the building is higher, and the locking plate 53 is closer to one side of the lifting oil cylinder 6.

Referring to fig. 1 and 2, according to the height of a building, the locking plate 53 is fixed at the corresponding position of the bar-shaped toothed plate 51, and the lifting cylinder 6 extends and retracts at the moment to realize the lifting of the ascending structure. The longer the lifting oil cylinder 6 extends out, the higher the height of the ascending structure is, and the steeper the gradient is; the shorter the lifting oil cylinder 6 extends out, the lower the height of the ascending structure is, and the slower the gradient is.

Referring to fig. 1 and 2, when the use is completed, the locking plate 53 releases the strip toothed plate 51, the lifting cylinder 6 is shortened, and the horizontal sliding base 4 slides towards the end away from the bottom of the lifting cylinder 6. The horizontal included angle of the first support rod 1, the second support rod 2, the third support rod 3 and the lifting oil cylinder 6 is the minimum when the first support rod slides, the locking plate 53 is farthest away from the lower end of the lifting oil cylinder 6, at the moment, the occupied space is the minimum, and the ascending structure is in the lowest state.

Referring to fig. 1, in order to reinforce the stability of the first struts 1 and prevent the first struts 1 from bending and deforming, a cross bar 7 is fixedly connected between two adjacent first struts 1. The cross rod 7 can also enable two adjacent groups of first supporting rods 1 to move synchronously to keep the upper platform horizontal.

Referring to fig. 1, the acting points of the lifting cylinder 6 and the third support rod 3 on the first support rod 1 are the positions where the first support rod 1 is most easily bent, and therefore a reinforcing plate 11 is fixedly connected to the first support rod 1 at the position where the lifting cylinder 6 and the third support rod 3 are connected. In order to reduce the weight of the first support bar 1 and save the cost, a plurality of small holes 12 are arranged on the reinforcing plate 11.

Example 2

The difference from embodiment 1 is that each lifting mechanism includes three sets of racks.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.