CN115405220A - Electronic ladder frame and fire engine of drawing - Google Patents
Electronic ladder frame and fire engine of drawing Download PDFInfo
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- CN115405220A CN115405220A CN202211052872.3A CN202211052872A CN115405220A CN 115405220 A CN115405220 A CN 115405220A CN 202211052872 A CN202211052872 A CN 202211052872A CN 115405220 A CN115405220 A CN 115405220A
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- 230000007246 mechanism Effects 0.000 claims abstract description 115
- 230000007306 turnover Effects 0.000 claims abstract description 56
- 230000000903 blocking effect Effects 0.000 claims description 27
- 230000006835 compression Effects 0.000 claims description 14
- 238000007906 compression Methods 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 229910001220 stainless steel Inorganic materials 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C5/00—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles
- E06C5/02—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C27/00—Fire-fighting land vehicles
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C5/00—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles
- E06C5/32—Accessories, e.g. brakes on ladders
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Abstract
The invention discloses an electric ladder frame, which comprises a lower assembly, an upper assembly, a chain assembly, a connecting rod sliding mechanism and a driving turnover mechanism, wherein the lower assembly is connected with the upper assembly through a chain; the lower assembly is connected with the fire engine and is used for supporting the upper assembly; the chain assembly is arranged on the inner side of the lower assembly and is connected with the connecting rod sliding mechanism; the upper assembly is connected with the connecting rod sliding mechanism and used for fixing the fire ladder. According to the electric ladder pulling frame and the fire fighting truck, the lower assembly is fixed at the top of the fire fighting truck, the turnover mechanism is driven to be parallel to or protrude out of the tail of the fire fighting truck, and the upper assembly is guaranteed not to interfere with the fire fighting truck when being turned over; the upper assembly is connected with the driving turnover mechanism to complete an integral closed-loop structure. When the turnover mechanism is driven to rotate forwards, the connecting rod sliding mechanism drives the upper assembly to move downwards, and when the lower limit switch in the lower assembly touches the lower limit surface of the connecting rod sliding mechanism, the turnover mechanism is driven to stop automatically to finish the descending operation.
Description
Technical Field
The invention relates to an electric ladder frame and a fire fighting truck, and belongs to the technical field of fire safety equipment.
Background
In order to ensure that the fire fighting truck can quickly, conveniently and laborsavingly put the rescue equipment into the disaster relief site when arriving at the disaster relief site, improve the rescue efficiency, save the physical strength of rescue personnel and improve the safety and operability of equipment, each fire department and rescue department put forward higher requirements on the timely putting of the rescue equipment into the rescue site. At present most of domestic city owner war fire engine standards are equipped with three sections or two sections aluminum alloy and draw ladder weight and about 90kg or 50kg, because the space of fire engine is limited, draw the ladder all to assemble at fire engine carriage top, to the installation requirement who draws the ladder: the vehicle-mounted parking device has the advantages of small occupied space, safety and reliability in fixing (even if the vehicle runs at a high speed), convenience, rapidness, labor saving and safety in taking and placing. During actual rescue, trapped people are rescued by floors below five floors basically by means of pulling ladders.
The fire engine that current part adopted manual form is with drawing terraced frame, needs the fireman to place the rescue ladder in the fire engine roof manually: this requires two firefighters to climb the roof, pull the rescue ladder upward, and the other two firefighters stand on the ground and lift the rescue ladder upward. Among them, there are the following disadvantages: firstly, the process of manually placing the rescue ladder is slow, so that precious rescue time is delayed; secondly, the working intensity is high in the process of dragging and lifting the fire ladder by a fireman, and the physical strength of the fireman is wasted; thirdly, in case of emergency, the fire fighter is easy to fall off in the process of quickly climbing the roof;
therefore, each team begins to use the electric ladder pulling frame, and the existing part of electric ladder pulling frames adopt the motor to drive the swing arms to enable the ladder pulling frames to complete lifting and overturning, and the swing arms have higher running tracks and are limited by the height of a field;
in the other part of the electric ladder pulling frame, a motor is adopted to drive a gear rack to lift and turn the ladder pulling frame, and the processing cost is higher if the whole rack is made (2 m is more than the rack and less than 4 m); if the rack is spliced in sections, the requirement on the accuracy of the mounting surface of the rack is high; in order to prevent the rack from rusting, stainless steel is needed, so that the processing cost is higher; and when the gear and the rack are assembled, the required precision is high. When the gear is operated for a long time or is impacted, the gear and the rack are easy to damage; meanwhile, the device for fixing the ladder frame only can be used for a single-style rescue ladder, and the general degree of the rescue ladder is not high.
Therefore, in order to solve the above technical problems, an electric ladder pulling frame is needed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an electric ladder pulling frame and a fire engine.A lower assembly is fixed at the top of the fire engine and drives a turnover mechanism to be level with or protrude out of the tail of the fire engine, so that the upper assembly is ensured not to interfere with the fire engine when being turned; the upper assembly is connected with the driving turnover mechanism to complete an integral closed-loop structure. When the turnover mechanism is driven to rotate forwards, the connecting rod sliding mechanism drives the upper assembly to move downwards, and when the lower limit switch in the lower assembly touches the lower limit surface of the connecting rod sliding mechanism, the turnover mechanism is driven to stop automatically to finish the descending operation. When the reverse rotation of the driving turnover mechanism, the connecting rod sliding mechanism drives the upper assembly to move upwards, and when the upper limit switch in the lower assembly touches the upper limit switch in the upper assembly, the driving turnover mechanism automatically stops to complete the lifting operation.
In order to achieve the above purpose/solve the above technical problems, the present invention is realized by adopting the following technical scheme:
in a first aspect, the invention provides an electric ladder frame, which comprises a lower assembly, an upper assembly, a chain assembly, a connecting rod sliding mechanism and a driving turnover mechanism, wherein the lower assembly is connected with the upper assembly through a connecting rod sliding mechanism;
the lower assembly is connected with the fire engine and used for supporting the upper assembly;
the chain assembly is arranged on the inner side of the lower assembly and is connected with the connecting rod sliding mechanism;
the upper assembly is connected with the connecting rod sliding mechanism and used for fixing the fire ladder;
the driving turnover mechanism is arranged at the tail end of the lower assembly, is flush with or protrudes out of the tail of the fire fighting truck and is used for driving the chain assembly to move so as to drive the upper assembly connected with the connecting rod sliding mechanism to linearly move relative to the lower assembly; when the upper assembly moves from the head end of the lower assembly to the tail end of the lower assembly, the turnover mechanism is driven to drive the upper assembly to turn over.
Furthermore, the lower assembly comprises a fixed base, a slideway, a chain mounting device and a locking device;
the fixed base is arranged at the bottom of the fire fighting truck and is used for supporting the slideway and the chain mounting device;
the chain mounting device is used for mounting a chain assembly;
the locking device is installed at the head end of the lower assembly and comprises a locking plate fixed with the head end of the lower assembly, springs are fixedly installed at two ends of the inner side of the locking plate, and guide columns are fixedly connected to the other ends of the springs.
Furthermore, the lower assembly also comprises an upper limit switch and a lower limit switch; the upper limit switch and the lower limit switch are respectively arranged at the head end and the tail end of the lower assembly.
Further, the chain mounting device comprises a chain mounting rack, a driven wheel and a chain stop block;
the chain mounting rack is arranged between the slideways, the driven wheel is mounted at one end of the chain mounting rack, the chain stop block is mounted at the other end of the chain mounting rack, and an arc surface is arranged on the surface of the chain stop block.
Further, the connecting rod sliding mechanism comprises a chain connecting plate, a sliding block, a damper, a connecting rod, a U-shaped notch II and a lower limiting surface;
the chain connecting plate is used for connecting the connecting rod sliding mechanism and the chain assembly;
the sliding block is matched with the slide way and is used for connecting the connecting rod sliding mechanism with the lower assembly;
the damper and the connecting rod are used for connecting the connecting rod sliding mechanism and the upper assembly;
the U-shaped groove opening II is formed in the middle of the bottom side of the connecting rod sliding mechanism;
the lower limiting surface is used for being matched with the lower limiting switch, and when the lower limiting surface touches the lower limiting switch, the turnover mechanism is driven to stop driving.
Furthermore, the upper assembly comprises a fire ladder mounting frame, and an inner blocking device, an outer blocking device, a pressing device, a connecting structure and a locking fixing plate which are arranged on the fire ladder mounting frame;
the fire ladder mounting rack is used for placing a fire ladder, the inner blocking device and the outer blocking device are used for adjusting according to the width of the fire ladder so as to fix the inner frame and the outer frame of the fire ladder, and the pressing device is used for preventing the fire ladder from shaking up and down when a vehicle runs;
the connecting structure is used for connecting the upper assembly and the connecting rod sliding mechanism;
the locking fixing plate is fixedly arranged at the head end of the fire ladder mounting rack, positioning holes are formed in the two ends of the outer side of the locking fixing plate, and a first U-shaped groove is formed in the middle of the bottom side of the locking fixing plate;
the outer side of the locking fixing plate is further provided with an upper limiting surface, the upper limiting surface is used for being matched with an upper limiting switch, and when the upper limiting surface touches the upper limiting switch, the driving overturning mechanism is driven to stop driving.
Furthermore, the connecting structure comprises a connecting rod connecting plate and a damper connecting plate, the connecting rod connecting plate is used for being connected with the connecting rod, and the damper connecting plate is used for being connected with the damper.
Furthermore, the chain assembly comprises a chain and a chain fixing plate, the chain is installed on the inner side of the lower assembly, and the chain fixing plate is used for connecting the chain and the connecting rod sliding mechanism.
Furthermore, the driving turnover mechanism comprises a shell, a sliding block, a hinge, a driving motor, a transmission shaft, a driving wheel, a meshing flange, a compression spring, a pull rod and a hook;
the shell is connected with the tail end of the lower assembly, the sliding block is used for connecting and driving the turnover mechanism and the upper assembly, and the sliding block is connected with the shell through a hinge;
the driving wheel and the meshing flange are both arranged on the outer side of the transmission shaft, the compression spring is arranged between the driving wheel and the meshing flange, and the pull rod and the hook are used for separating the driving wheel from the meshing flange;
the driving wheel is matched with the driven wheel and used for mounting a chain, and an arc groove is formed in the outer side of the driving wheel and matched with the arc surface to prevent the chain from being clamped;
the driving motor is used for driving the transmission shaft to rotate so as to drive the chain assembly to move.
In a second aspect, the invention provides a fire fighting truck, which comprises the electric ladder pulling frame.
Compared with the prior art, the invention has the following beneficial effects:
according to the electric ladder pulling frame provided by the invention, the lower assembly is fixed at the top of the fire fighting truck, the turnover mechanism is driven to be parallel and level or protrude out of the tail part of the fire fighting truck, and the upper assembly is ensured not to interfere with the fire fighting truck when being turned over; the upper assembly is connected with the driving turnover mechanism to complete an integral closed-loop structure. When the turnover mechanism is driven to rotate forwards, the connecting rod sliding mechanism drives the upper assembly to move downwards, and when the lower limit switch in the lower assembly touches the lower limit surface of the connecting rod sliding mechanism, the turnover mechanism is driven to stop automatically to finish the descending operation. When the turnover mechanism is driven to rotate reversely, the connecting rod sliding mechanism drives the upper assembly to move upwards, and when an upper limit switch in the lower assembly touches an upper limit switch in a locking fixing plate in the upper assembly, the turnover mechanism is driven to stop automatically to finish the lifting operation;
the electric ladder pulling frame provided by the invention adopts the adjustable outer blocking device and the adjustable inner blocking device, and can be adjusted according to the widths of different types of fire ladders, so that the electric ladder pulling frame is suitable for different types of fire ladders, and the universality is improved;
according to the electric ladder pulling frame, the fire ladder is fixed through the outer blocking device, the inner blocking device and the pressing device, so that the fire ladder is prevented from shaking up and down when a vehicle runs;
according to the electric ladder pulling frame, when no power is output, the engaging flange and the driving wheel can be manually separated from the pull rod, and meanwhile, the engaging flange and the driving wheel can be separated by the compression spring under the action of no external force for emergency operation.
Drawings
Fig. 1 is a schematic structural view of an electric ladder pulling frame provided in the first embodiment;
FIG. 2 is a schematic view of a transportation state of the electric ladder pulling rack in the first embodiment;
FIG. 3 is a schematic structural view of the lower assembly of FIG. 1;
FIG. 4 is a schematic view of the rear end of the lower assembly of FIG. 3;
FIG. 5 is a schematic view of a head end configuration of the lower assembly of FIG. 3;
FIG. 6 is a schematic structural view of the upper assembly of FIG. 1;
FIG. 7 is a schematic view of the outer baffle means, inner baffle means and hold-down means of FIG. 6;
FIG. 8 is a schematic end view of the upper assembly of FIG. 6;
FIG. 9 is a schematic view of the lower assembly of FIG. 3 engaged with a chain;
FIG. 10 is a schematic view of the lower assembly of FIG. 3 coupled to the chain assembly, the link slide mechanism and the drive canting mechanism;
FIG. 11 is a side view schematic of the structure of FIG. 10;
FIG. 12 is a schematic view of the linkage assembly and the link slide mechanism in a coupled condition;
FIG. 13 is a schematic view of the link slide mechanism;
FIG. 14 is a schematic structural view of a driving turn-over mechanism;
FIG. 15 is a schematic sectional view of a part of the driving turn-over mechanism;
fig. 16 is a schematic view of the structure of the hook in the driving turnover mechanism.
In the figure: 1. a lower assembly; 101. a fixed base; 102. a slideway; 103. a locking plate; 104. a spring; 105. a guide post; 106. an upper limit switch; 107. a lower limit switch; 108. a chain mounting rack; 109. a driven wheel; 1010. a chain stopper; 2. an upper assembly; 201. a fire ladder mounting rack; 202. an internal blocking device; 203. an outer blocking device; 204. a pressing device; 205. locking the fixing plate; 206. positioning holes; 207. a first U-shaped groove is formed; 208. an upper limiting surface; 209. a connecting rod connecting plate; 2010. a damper connecting plate; 3. a chain assembly; 301. a chain fixing plate; 4. a link sliding mechanism; 401. a chain connecting plate; 402. a slider; 403. a damper; 404. a connecting rod; 405. a U-shaped notch II; 406. a lower limiting surface; 5. driving the turnover mechanism; 501. a housing; 502. a slider; 503. a hinge; 504. a motor; 505. a drive shaft; 506. a driving wheel; 507. engaging the flange; 508. a compression spring; 509. a lever; 5010. and (4) hanging hooks.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Example one
As shown in fig. 1, the present embodiment provides an electric ladder frame, which includes a lower assembly 1, an upper assembly 2, a chain assembly 3, a connecting rod sliding mechanism 4 and a driving turnover mechanism 5;
the lower assembly 1 is connected with the fire engine and is used for supporting the upper assembly 2;
the chain component 3 is arranged on the inner side of the lower component 1 and is connected with the connecting rod sliding mechanism 4;
the upper assembly 2 is connected with a connecting rod sliding mechanism 4 and used for fixing the fire ladder;
the driving turnover mechanism 5 is arranged at the tail end of the lower assembly 1, is parallel to or protrudes out of the tail part of the fire fighting truck and is used for driving the chain assembly 3 to move so as to drive the upper assembly 2 connected with the connecting rod sliding mechanism 4 to linearly move relative to the lower assembly 1; when the upper assembly 2 moves from the head end of the lower assembly 1 to the tail end of the lower assembly 1, the turnover mechanism 5 is driven to drive the upper assembly 2 to turn over.
In the technical scheme, the lower assembly 1 is fixed at the top of the fire fighting truck, and the driving turnover mechanism 5 is level with or protrudes out of the tail of the fire fighting truck, so that the upper assembly 2 is ensured not to interfere with the fire fighting truck when being turned over; the upper assembly 2 is connected with a driving turnover mechanism 5 to complete an integral closed-loop structure. When the turnover mechanism 5 is driven to rotate forward, the connecting rod sliding mechanism 4 drives the upper assembly 2 to move downward, and when the lower limit switch 107 in the lower assembly 1 touches the lower limit surface 406 of the connecting rod sliding mechanism 4 in the figure, the turnover mechanism 5 is driven to stop automatically, and the descending operation is completed, as shown in fig. 2. After the driving turnover mechanism 5 rotates reversely, the connecting rod sliding mechanism 4 drives the upper assembly 2 to move upwards, and when the upper limit switch 106 in the lower assembly 1 touches the upper limit surface in the locking fixing plate 205 in the upper assembly 2, the driving turnover mechanism 5 automatically stops to complete the lifting operation, as shown in fig. 1.
Specifically, as shown in fig. 3 to 5, in order to support the supporting member by the lower assembly 1, the lower assembly 1 includes a fixing base 101, a slide 102, a chain mounting device, and a locking device;
the fixed base 101 is arranged at the bottom of the fire fighting truck and is used for supporting the slideway 102 and the chain installation device;
the chain mounting device is used for mounting the chain assembly 3;
the locking device is installed at the head end of the lower component 1 and comprises a locking plate 103 fixed with the head end of the lower component 1, springs 104 are fixedly installed at two ends of the inner side of the locking plate 103, and guide columns 105 are fixedly connected to the other ends of the springs 104.
In the above technical solution, the slideway 102 includes two 4080U-shaped materials, and the cross section of the 4080U-shaped material is provided with a notch, as shown in fig. 3; when the slideway 102 is installed, the notches of the two 4080U profiles are symmetrically inwards and are installed on the fixed base 101 in parallel to form the slideway 102; the locking device is used for being matched with the upper component 2 and is used for placing the upper component 2 to shake up and down when a vehicle runs; the chain mounting means is adapted to cooperate with the chain assembly 3 to effect a connection between the chain assembly 3 and the lower assembly 1.
Specifically, as shown in fig. 4 and 5, in order to realize the cooperation between the lower assembly 1 and the driving turnover mechanism 5, the lower assembly 1 further includes an upper limit switch 106 and a lower limit switch 107; the upper limit switch 106 and the lower limit switch 107 are respectively disposed at the head end and the tail end of the lower assembly 1.
Specifically, as shown in fig. 3-5, to support chain assembly 3 by the chain mounting device, the chain mounting device includes a chain mounting bracket 108, a driven pulley 109, and a chain stopper 1010;
the chain mounting rack 108 is arranged between the slideways 102, the driven wheel 109 is mounted at one end of the chain mounting rack 108, the chain stopper 1010 is mounted at the other end of the chain mounting rack 108, and the surface of the chain stopper 1010 is provided with an arc surface K.
Specifically, as shown in fig. 13, the link sliding mechanism 4 includes a chain connecting plate 401, a slider 402, a damper 403, a link 404, a second U-shaped notch 405, and a lower limiting surface 406;
the chain connecting plate 401 is used for connecting the connecting rod sliding mechanism 4 and the chain assembly 3;
the sliding block 402 is matched with the slide way 102 and is used for connecting the connecting rod sliding mechanism 4 with the lower component 1;
the damper 403 and the link 404 are used for connecting the link sliding mechanism 4 with the upper assembly 2;
the second U-shaped notch 405 is formed in the middle of the bottom side of the connecting rod sliding mechanism 4;
the lower limit surface 406 is used for being matched with the lower limit switch 107, and when the lower limit surface 406 touches the lower limit switch 107, the turnover mechanism 5 is driven to stop driving.
In the above technical solution, the damper 403 and the connecting rod 404 are used for connecting the upper assembly 2, the chain connecting plate 401 is used for connecting the connecting rod sliding mechanism 4 and the chain assembly 3, so that the connecting rod sliding mechanism 4 can drive the upper assembly 2 to move relative to the lower assembly 1 under the driving of the chain assembly 3, and the U-shaped notch two 405 is used for avoiding a chain mounting device so as to avoid motion interference; the connection between the damper 403 and the link 404 with the upper assembly 2 should be movable so as to meet the requirement of turning the upper assembly 2, and the length of the damper 403 and the link 404 determines the turning angle of the upper assembly 2 under the action of the driving turning mechanism 5 and the maximum height of the moving track.
Specifically, as shown in fig. 6 to 8, in order to fix the upper assembly 2 to the fire ladder, the upper assembly 2 includes a fire ladder mounting bracket 201, and an inner blocking device 202, an outer blocking device 203, a pressing device 204, a connecting structure and a locking fixing plate 205 which are mounted on the fire ladder mounting bracket 201;
the fire ladder mounting rack 201 is used for placing a fire ladder, the inner blocking device 202 and the outer blocking device 203 are used for adjusting according to the width of the fire ladder so as to fix the inner frame and the outer frame of the fire ladder, and the pressing device 204 is used for preventing the fire ladder from shaking up and down when a vehicle runs;
the connecting structure is used for connecting the upper component 2 and the connecting rod sliding mechanism 4;
the locking fixing plate 205 is fixedly installed at the head end of the fire ladder mounting frame 201, positioning holes 206 are formed in both ends of the outer side of the locking fixing plate 205, and a first U-shaped notch 207 is formed in the middle of the bottom side of the locking fixing plate 205;
the outer side of the locking fixing plate 205 is further provided with an upper limiting surface 208, the upper limiting surface 208 is used for being matched with the upper limiting switch 106, and when the upper limiting surface touches the upper limiting switch 106, the turnover mechanism 5 is driven to stop driving.
In the technical scheme, the inner blocking device 202 and the outer blocking device 203 can adopt adjustable blocking pieces to be adjusted according to the widths of different types of fire ladders, so that the inner frame and the outer frame of the fire ladder are fixed, and the fire ladder is prevented from shaking left and right when a vehicle runs; as shown in the figure, the outer blocking device 203 and the inner blocking device 202 can be adjusted and fixed by bolts as shown in the figure, but are not limited thereto, and can also be in other manners as long as the adjustment can be realized according to the width of the fire ladder, such as a manner that an electric push rod is matched with a fixed plate;
the positioning hole 206 is used for matching with the guide post 105, and when the upper assembly 2 is in the conveying process, namely the state in fig. 2, the positioning hole 206 is inserted into the guide post 105, so that the spring 104 is compressed, and the upper assembly 2 is prevented from shaking up and down during the running of a vehicle;
the first U-shaped notch 207 is used for reserving a certain space for the damper 403;
the pressing device 204 can rotate and stretch, the rotation angle is 90 degrees, as shown in fig. 7, the pressing device 204 is in a state before the fire ladder is fixed, and the pressing device 204 can realize angle conversion and stretching when the fire ladder is connected with the upper assembly 2, so that the fire ladder is fixed, and the fire ladder is prevented from shaking up and down when a vehicle runs; the compressing device 204 may adopt a motor and a compressible spring to cooperate to realize the rotating and telescopic compressing functions of the compressing device 204, but is not limited thereto, and may also adopt other structural combinations, such as the cooperation of an electric push rod and a motor.
Specifically, as shown in fig. 8, in order to realize the connection between the connection structure and the damper 403 and the link 404, the connection structure includes a link connection plate 209 and a damper connection plate 2010, the link connection plate 209 is used for being connected with the link 404, and the damper connection plate 2010 is used for being connected with the damper 403.
Specifically, as shown in fig. 9 and 12, in order to realize the matching between the chain assembly 3 and the lower assembly 1, the chain assembly 3 includes a chain mounted on the inner side of the lower assembly 1 and a chain fixing plate 301 for connecting the chain and the link sliding mechanism 4.
Specifically, as shown in fig. 14 to 16, the driving and overturning mechanism 5 includes a housing 501, a sliding block 502, a hinge 503, a driving motor 504, a transmission shaft 505, a driving wheel 506, an engaging flange 507, a compression spring 508, a trigger 509 and a hook 5010;
the shell 501 is connected with the tail end of the lower component 1, the sliding block 502 is used for connecting and driving the turnover mechanism 5 and the upper component 2, and the sliding block 502 is connected with the shell 501 through a hinge 503;
the driving wheel 506 and the engaging flange 507 are both arranged on the outer side of the transmission shaft 505, the compression spring 508 is arranged between the driving wheel 506 and the engaging flange 507, and the pull rod 509 and the hook 5010 are used for separating the driving wheel 506 and the engaging flange 507;
the driving wheel 506 is matched with the driven wheel 109 and used for mounting a chain, and an arc groove L is formed in the outer side of the driving wheel 506 and matched with the arc surface K to prevent the chain from being clamped;
the driving motor 504 is used for driving the transmission shaft 505 to rotate so as to drive the chain assembly 3 to move.
In the above technical solution, as shown in the figure, the bottom surface of the upper component 2 is provided with a letter-type slot adapted to the sliding block 502, and is used for connecting the upper component 2 and the sliding block 502 to determine the movement track of the upper component 2, wherein one end of the hinge 503 is fixed, and the other end is connected to the sliding block 502; when the driving motor 504 drives the chain component 3 to drive the fire ladder at the upper component 2 to slide and the gravity centers of the upper component 2 and the fire ladder move to the outside of the vehicle body, the upper component 2 starts to turn over around the hinge 503 under the action of the gravity of the upper component 2 so as to realize the turning motion of the upper component 2, and the state after the turning is finished is shown in fig. 1; the driving motor 504 is a power device, the transmission shaft 505 is a power transmission device, an external spline A in the transmission shaft 505 is matched with an internal spline B in the meshing flange 507, a compression spring 508 is additionally arranged between the meshing flange 507 and the driving wheel 506, when the pull rod 509 is clamped by the hook 5010, the compression spring 508 is in a compression state, and the meshing flange 507 is meshed with the driving wheel 506; when the driving motor 504 cannot rotate and no power is output, the hook 5010 can be manually separated from the lever 509, and the compression spring 508 is no longer in a compression state under the action of no external force, so that the meshing flange 507 is separated from the driving wheel 506, the power output of the driving motor 504 and the chain assembly 3 is cut off, and the chain assembly can rotate around the driving wheel 506 under the action of human force and is used for emergency operation.
In summary, in the electric ladder frame provided by the embodiment, the lower assembly 1 is fixed at the top of the fire fighting truck, and the driving turnover mechanism 5 is flush with or protrudes out of the tail of the fire fighting truck, so that the upper assembly 2 is ensured not to interfere with the fire fighting truck when being turned over; the upper assembly 2 is connected with a driving turnover mechanism 5 to complete an integral closed-loop structure. When the turnover mechanism 5 is driven to rotate forwards, the connecting rod sliding mechanism 4 drives the upper assembly 2 to move downwards, and when the lower limit switch 107 in the lower assembly 1 touches the lower limit surface 406 of the connecting rod sliding mechanism 4, the turnover mechanism 5 is driven to stop automatically, so that the descending operation is completed. When the turnover mechanism 5 is driven to rotate reversely, the connecting rod sliding mechanism 4 drives the upper assembly 2 to move upwards, and when the upper limit switch 106 in the lower assembly 1 touches the upper limit surface in the locking and fixing plate 205 in the upper assembly 2, the turnover mechanism 5 is driven to automatically stop to finish the lifting operation; specifically, in this embodiment, the upper limit switch 106 and the lower limit switch 107 may adopt a touch sensor, and when the upper limit surface and the lower limit surface 406 contact the upper limit switch 106 and the lower limit switch 107, the upper limit switch 106 and the lower limit switch 107 will send out an electric signal, so as to control the driving motor 504 to operate or stop operating.
The electronic ladder frame that draws that this embodiment provided adopts adjustable outer blocking device 203 and interior blocking device 202, can adjust according to the width of different model fire ladders to be suitable for the fire ladder of different models, in order to improve the commonality.
The electronic ladder frame that draws that this embodiment provided fixes the fire ladder through outer blocking device 203, interior blocking device 202 and closing device 204 to prevent that the fire ladder from rocking from top to bottom when the vehicle operation.
In the electric ladder pulling frame provided by the embodiment, when no power is output, the engaging flange 507 and the driving wheel 506 can be separated from the hook 5010 and the lever 509 by hand, and meanwhile, the compression spring 508 can separate the engaging flange 507 and the driving wheel 506 under the condition of no external force, so that the emergency operation can be realized.
Example two
This embodiment provides a fire engine, through the electronic ladder frame that draws in adaptation embodiment one, can be suitable for the fire ladder of different models, to drawing the ladder frame fixed back upset and go up and down to be provided with emergent hand device, with the reply emergency.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various improvements and modifications without departing from the technical principle of the present invention, and those improvements and modifications should be considered as the protection scope of the present invention.
Claims (10)
1. An electric ladder pulling frame is characterized by comprising a lower assembly (1), an upper assembly (2), a chain assembly (3), a connecting rod sliding mechanism (4) and a driving turnover mechanism (5);
the lower component (1) is connected with the fire engine and is used for supporting the upper component (2);
the chain component (3) is arranged on the inner side of the lower component (1) and is connected with the connecting rod sliding mechanism (4);
the upper assembly (2) is connected with the connecting rod sliding mechanism (4) and is used for fixing the fire ladder;
the driving turnover mechanism (5) is arranged at the tail end of the lower assembly (1), and the driving turnover mechanism (5) is parallel and level to or protrudes out of the tail part of the fire fighting truck and is used for driving the chain assembly (3) to move so as to drive the upper assembly (2) connected with the connecting rod sliding mechanism (4) to linearly move relative to the lower assembly (1); when the upper assembly (2) moves from the head end of the lower assembly (1) to the tail end of the lower assembly (1), the turnover mechanism (5) is driven to drive the upper assembly (2) to turn over.
2. An electric ladder bar as claimed in claim 1, characterised in that the lower assembly (1) comprises a fixed base (101), a slideway (102), chain mounting means and locking means;
the fixed base (101) is arranged at the bottom of the fire fighting truck and is used for supporting the slide way (102) and the chain installation device;
the chain mounting device is used for mounting a chain assembly (3);
locking device installs in the head end of subassembly (1) down, includes and locking board (103) fixed mutually with subassembly (1) head end down, the equal fixed mounting in inboard both ends of locking board (103) has spring (104), the other end fixedly connected with guide post (105) of spring (104).
3. The power ladder bar according to claim 2, characterized in that the lower assembly (1) further comprises an upper limit switch (106) and a lower limit switch (107); the upper limit switch (106) and the lower limit switch (107) are respectively arranged at the head end and the tail end of the lower component (1).
4. The powered ladder bar of claim 2 wherein the chain mount comprises a chain mount (108), a driven pulley (109), and a chain block (1010);
the chain mounting rack (108) is arranged between the slide ways (102), the driven wheel (109) is installed at one end of the chain mounting rack (108), the chain stop block (1010) is installed at the other end of the chain mounting rack (108), and an arc surface is arranged on the surface of the chain stop block (1010).
5. The power ladder bar according to claim 1, wherein the link sliding mechanism (4) comprises a chain connecting plate (401), a sliding block (402), a damper (403), a connecting rod (404), a U-shaped notch II (405) and a lower limiting surface (406);
the chain connecting plate (401) is used for connecting the connecting rod sliding mechanism (4) with the chain assembly (3);
the sliding block (402) is matched with the slide way (102) and is used for connecting the connecting rod sliding mechanism (4) with the lower component (1);
the damper (403) and the connecting rod (404) are used for connecting the connecting rod sliding mechanism (4) and the upper assembly (2);
the U-shaped notch II (405) is formed in the middle of the bottom side of the connecting rod sliding mechanism (4);
the lower limiting surface (406) is used for being matched with the lower limiting switch (107), and when the lower limiting surface (406) touches the lower limiting switch (107), the driving overturning mechanism (5) is driven to stop driving.
6. The electric ladder pulling frame according to claim 1, wherein the upper assembly (2) comprises a fire ladder mounting frame (201) and an inner blocking device (202), an outer blocking device (203), a pressing device (204), a connecting structure and a locking fixing plate (205) which are mounted on the fire ladder mounting frame (201);
the fire ladder mounting rack (201) is used for placing a fire ladder, the inner blocking device (202) and the outer blocking device (203) are used for adjusting according to the width of the fire ladder so as to fix the inner frame and the outer frame of the fire ladder, and the pressing device (204) is used for preventing the fire ladder from shaking up and down when a vehicle runs;
the connecting structure is used for connecting the upper component (2) and the connecting rod sliding mechanism (4);
the locking fixing plate (205) is fixedly installed at the head end of the fire ladder mounting frame (201), positioning holes (206) are formed in both ends of the outer side of the locking fixing plate (205), and a first U-shaped groove (207) is formed in the middle of the bottom side of the locking fixing plate (205);
the outer side of the locking fixing plate (205) is further provided with an upper limiting surface (208), the upper limiting surface (208) is used for being matched with the upper limiting switch (106), and when the upper limiting surface touches the upper limiting switch (106), the driving overturning mechanism (5) is driven to stop driving.
7. The power ladder of claim 6, characterized in that the connection structure comprises a link connection plate (209) and a damper connection plate (2010), the link connection plate (209) being adapted to be connected with a link (404) and the damper connection plate (2010) being adapted to be connected with a damper (403).
8. An electrically powered ladder puller according to claim 1, c h a r a c t e r i z e d in that the chain assembly (3) comprises a chain mounted inside the lower assembly (1) and a chain fixing plate (301), the chain fixing plate (301) being used for connecting the chain with the link sliding mechanism (4).
9. The power ladder rack of claim 1 or 8, wherein the driven turnover mechanism (5) comprises a housing (501), a sliding block (502), a hinge (503), a driving motor (504), a transmission shaft (505), a driving wheel (506), an engagement flange (507), a compression spring (508), a lever (509) and a hook (5010);
the shell (501) is connected with the tail end of the lower component (1), the sliding block (502) is used for connecting and driving the turnover mechanism (5) and the upper component (2), and the sliding block (502) is connected with the shell (501) through a hinge (503);
the driving wheel (506) and the engaging flange (507) are both arranged on the outer side of the transmission shaft (505), the compression spring (508) is arranged between the driving wheel (506) and the engaging flange (507), and the lever (509) and the hook (5010) are used for separating the driving wheel (506) from the engaging flange (507);
the driving wheel (506) is matched with the driven wheel (109) and used for mounting a chain, and an arc groove is formed in the outer side of the driving wheel (506) and matched with the arc surface to prevent the chain from being clamped;
the driving motor (504) is used for driving the transmission shaft (505) to rotate so as to drive the chain assembly (3) to move.
10. A fire fighting vehicle, characterized in that it comprises an electric ladder rack according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211052872.3A CN115405220B (en) | 2022-08-31 | 2022-08-31 | Electric ladder pulling frame and fire truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211052872.3A CN115405220B (en) | 2022-08-31 | 2022-08-31 | Electric ladder pulling frame and fire truck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115405220A true CN115405220A (en) | 2022-11-29 |
| CN115405220B CN115405220B (en) | 2024-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211052872.3A Active CN115405220B (en) | 2022-08-31 | 2022-08-31 | Electric ladder pulling frame and fire truck |
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| Country | Link |
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| CN (1) | CN115405220B (en) |
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| CN110397399A (en) * | 2019-07-22 | 2019-11-01 | 江苏苏阳建设有限公司 | A kind of fire-fighting rack handler |
| CN214886800U (en) * | 2021-03-05 | 2021-11-26 | 广西航述技术服务有限公司 | Fire ladder taking and placing device for fire truck |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH695882A5 (en) * | 2002-11-18 | 2006-10-13 | Carrosserie Rusterholz Ag | Fire engine has holder for ladder on roof and device by which ladder can be lowered to side of engine and raised onto roof again after use |
| US20110038698A1 (en) * | 2009-08-17 | 2011-02-17 | Zhengxin Li | Motor driven ladder rack system |
| CN102011545A (en) * | 2010-10-29 | 2011-04-13 | 张建明 | Pull ladder frame automatic moving and overturning mechanism for fire engine |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN115405220B (en) | 2024-07-05 |
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