Electric ladder assembly and fire fighting truck

Abstract

The utility model relates to an electric ladder assembly and a fire fighting truck, and relates to the field of fire fighting equipment. The utility model provides an electric ladder assembly. The electric ladder assembly comprises a ladder assembly body and a plurality of extension ladders, the first end of the ladder assembly body is in sliding connection with the guide structure, the second end of the ladder assembly body is rotationally connected with the swing rod, a plurality of ladder assemblies arranged at intervals are arranged on the ladder assembly body, the ladder assembly body is provided with a fixed seat and a pull belt, the fixed seat and the pull belt are arranged at the first end of the ladder assembly body, and the fixed seat is provided with a plurality of clamping grooves in the height direction of the fixed seat; the multiple extension ladders are arranged on the ladder assembly body in a foldable mode, step frames are arranged on the extension ladders, and the pull belts fix the step frames and any clamping groove. By arranging the fixed seat and the drawstring, the length of the drawstring is adjusted, and the drawstring and the clamping grooves with different heights are locked and fixed so as to adapt to the extension ladders with different specifications, so that the ladder assembly body and the extension ladders are locked and fixed; the electric ladder assembly can be suitable for extension ladders of various specifications and models, and the locking effect is good.

Description

Technical Field

[0001] The utility model relates to the field of fire-fighting equipment, and in particular to an electric ladder frame and a fire truck. Background Art

[0002] To ensure that special vehicles can quickly, conveniently, and effortlessly deploy rescue equipment upon arrival at a disaster site, thereby improving rescue efficiency, reducing the physical demands on rescue personnel, and enhancing the safety and operability of equipment, fire brigades and emergency response teams have placed higher demands on the timely deployment of rescue equipment to the scene. Currently, most urban fire trucks in China are equipped with a three- or two-section aluminum alloy ladder as standard. Due to limited space in fire trucks, ladders are mounted on the roof of the truck compartment. Ladder installation requirements are: minimal space occupation, secure and reliable mounting (even at high speeds), and easy, quick, labor-saving, and safe access. Currently, rescue operations for trapped personnel on floors below the fifth floor primarily rely on ladders.

[0003] The inventors have discovered that, in actual use, due to the different specifications and thicknesses of the ladders (6m, 9m, and 15m), the existing device often causes the ladder to bounce up and down or fail to lock even after it is locked, thus failing to achieve the desired locking effect. Utility Model Content

[0004] The purpose of the utility model is to provide an electric ladder frame and a fire truck, which can be applicable to ladders of various specifications and models and have good locking effect.

[0005] The embodiment of the present utility model is achieved as follows:

[0006] In the first aspect, the utility model proposes an electric ladder frame, comprising: a ladder frame body and multiple ladders; the first end of the ladder frame body is slidably connected to the guide structure, the second end of the ladder frame body is rotatably connected to the rocker arm, the ladder frame body is provided with multiple ladder frames arranged at intervals, the ladder frame body is provided with a fixed seat and a pull belt, the fixed seat and the pull belt are arranged at the first end of the ladder frame body, the fixed seat is provided with multiple clamping grooves along the height direction of the fixed seat; multiple ladders can be folded and arranged on the ladder frame body, the ladder is provided with a step frame, and the pull belt fixes the step frame to any of the clamping grooves.

[0007] Optionally, the fixing seat includes a base and a stopper, the stopper is fixed to the base, and the base is provided with a drawstring groove;

[0008] A plurality of the clamping grooves are provided on the stop block, and the plurality of the clamping grooves are arranged along the height direction of the stop block.

[0009] Optionally, the snap-fit groove is provided with a snap-fit surface, and a plurality of the snap-fit surfaces are arranged at intervals from top to bottom.

[0010] Optionally, the plurality of snap-in grooves are arranged toward the first end of the ladder frame body, and the drawstring groove is arranged toward the second end of the ladder frame body.

[0011] Optionally, the guide structure includes a guide seat, a first rotating shaft and a guide plate, the bottom of the guide seat is fixed to the vehicle body, and the top of the guide seat is fixed with two first bearings via a fixing plate;

[0012] The first rotating shaft is sleeved in the two first bearings and is rotatably connected to the first bearings, and the two ends of the first rotating shaft are respectively fixed to the guide plates;

[0013] A guide piece is provided at the other end of the guide plate, and the guide piece is slidably and position-limitingly connected to the first end of the ladder frame body.

[0014] Optionally, a guide groove is provided at the bottom of the ladder frame body along the extension direction of the ladder frame body, and the guide member is slidingly limited in the guide groove;

[0015] The guide member includes a guide wheel or a guide portion.

[0016] Optionally, the electric ladder frame further comprises an auxiliary bracket, wherein the auxiliary bracket is provided at the second end of the ladder frame body;

[0017] The auxiliary bracket includes a guide seat, two elastic members and two guide plates. The bottom of the guide seat is fixed to the vehicle body, and the guide plates are respectively arranged at both ends of the top of the guide seat. The two elastic members are arranged at intervals on the top of the guide seat. The tops of the two elastic members abut against the ladder frame body and are used to assist the ladder frame body in being lifted.

[0018] Optionally, the elastic member includes a guide seat and an elastic seat, a limiting groove is provided in the guide seat, and a spring is sleeved on the bottom of the elastic seat and is limitedly connected in the limiting groove.

[0019] Optionally, the electric ladder rack further includes a driving member and a control box, the control box is electrically connected to the driving member, and the control box and the driving member are arranged on the vehicle body;

[0020] One end of the swing rod is rotatably connected to the driving member, and the other end is rotatably connected to the bottom of the second end of the ladder frame body;

[0021] A manual hydraulic device is provided in the control box.

[0022] Optionally, the swing arm includes a second rotating shaft and two connected and fixed support rods, and the second rotating shaft is fixed to the tops of the two support rods;

[0023] A support seat is provided at the bottom of the support rod, and the support seat is transmission-connected to the driving member.

[0024] In a second aspect, the present invention further proposes a fire truck, comprising the electric ladder frame and a vehicle body as described in any one of the above items, wherein the electric ladder frame is arranged on the top of the vehicle body.

[0025] The beneficial effects of the embodiments of the present utility model are:

[0026] The electric ladder frame proposed by the utility model is adapted to ladders of different specifications by arranging a fixing seat and a pull belt, and adjusting the length of the pull belt and locking and fixing it with the clamping grooves of different heights, thereby locking and fixing the ladder frame body and the ladder; the electric ladder frame arranged in this way can be applicable to ladders of various specifications and models, and has a good locking effect, thereby improving the versatility and practicality of the electric ladder frame and facilitating mold production. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a working diagram of the electric ladder frame according to an embodiment of the utility model;

[0029] Figure 2 for Figure 1 A partial schematic diagram of the middle part;

[0030] Figure 3 for Figure 1 A partial schematic diagram of B in the middle;

[0031] Figure 4 for Figure 1 Partial schematic diagram of C in the middle;

[0032] Figure 5 This is a schematic diagram of an electric ladder frame according to an embodiment of the present utility model;

[0033] Figure 6 for Figure 5 Partial schematic diagram of D in the middle.

[0034] Icons: 010-car body; 020-electric ladder frame; 100-control box; 200-driving part; 210-first mounting seat; 220-mounting frame; 230-spiral swing cylinder; 300-rocker arm; 310-second rotating shaft; 320-support rod; 330-support seat; 400-guide structure; 410-guide seat; 420-first rotating shaft; 430-guide plate; 440-first bearing; 500-auxiliary bracket; 600-ladder frame body; 610-ladder frame; 620-fixing seat; 621-clamping groove; 622-base; 623-stop block; 624-pull strap groove; 630-pull strap; 640-second bearing; 700-pull ladder; 710-ladder frame. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0038] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0039] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0040] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0041] The utility model provides a fire truck, which comprises an electric ladder frame 020 and a vehicle box 010 , wherein the electric ladder frame 020 is arranged on the top of the vehicle box 010 .

[0042] Please refer to Figure 1 and Figure 5 In this embodiment, the fire truck includes a vehicle body 010; wherein, an electric ladder rack 020 is set on the top of the vehicle body to assist firefighters in carrying out firefighting work at a location higher than the ground.

[0043] Please refer to Figure 1 In this embodiment, the fire truck includes an electric ladder rack 020.

[0044] The electric ladder frame 020 proposed in this embodiment includes a ladder frame body 600 and multiple ladders 700; the first end of the ladder frame body 600 is slidably connected to the guide structure 400, and the second end of the ladder frame body 600 is rotatably connected to the swing arm 300. The ladder frame body 600 is provided with multiple ladder frames 610 arranged at intervals, and the ladder frame body 600 is provided with a fixed seat 620 and a pull belt 630. The fixed seat 620 and the pull belt 630 are arranged at the first end of the ladder frame body 600, and the fixed seat 620 is provided with multiple clamping grooves 621 along the height direction of the fixed seat 620; multiple ladders 700 can be folded and arranged on the ladder frame body 600, and the ladder 700 is provided with a step frame, and the pull belt 630 fixes the step frame to any clamping groove 621.

[0045] It can be understood that by providing a fixing seat 620 and a pull strap 630, and by adjusting the length of the pull strap 630 to adapt to a ladder 700 that does not meet the specifications, the ladder frame body 600 and the ladder 700 are locked and fixed; the electric ladder frame 020 provided in this way can be applicable to ladders 700 of various specifications and models, and has a good locking effect, thereby improving the versatility and practicality of the electric ladder frame 020 and facilitating mold production.

[0046] Please refer to Figure 1 In this embodiment, the electric ladder rack 020 includes a control box 100 .

[0047] Specifically, the control box 100 is electrically connected to the driving member 200 . The control box 100 is disposed on the top of the vehicle body 010 . The control box 100 is used to control the driving member 200 to rotate the rocker arm 300 .

[0048] Please refer to Figure 1 and Figure 2 In this embodiment, the electric ladder frame 020 includes a driving member 200; wherein, one end of the swing arm 300 is rotatably connected to the driving member 200, and the other end is rotatably connected to the bottom of the second end of the ladder frame body 600.

[0049] In this embodiment, the driving member 200 includes four first mounting seats 210, a third rotating shaft, and a spiral swing cylinder 230; the four first mounting seats 210 are arranged at intervals in the mounting frame 220; the spiral swing cylinder 230 is arranged between the two middle first mounting seats 210, and the output ends of the spiral swing cylinder 230 are rotatably connected to the third rotating shaft, and the third rotating shaft is provided with a gear structure that meshes with the rocker arm 300, and at the same time, both ends of the third rotating shaft are rotatably connected to the first mounting seat 210.

[0050] It can be understood that the output end of the spiral swing cylinder 230 drives the third rotating shaft at both ends, and the rotation of the third rotating shaft drives the support rod 320 of the swing arm 300 to rotate.

[0051] In this embodiment, a manual hydraulic device is provided in the control box 100 ; wherein, the manual hydraulic device provides power to the hydraulic system to realize manual emergency operation of the ladder frame body 600 , thereby improving versatility and practicality.

[0052] Please refer to Figure 1 and Figure 2 In this embodiment, the electric ladder frame 020 includes a swing rod 300.

[0053] In this embodiment, the rocker arm 300 includes a second rotating shaft 310, a support rod 320 and a support seat 330; wherein, the two connected and fixed support rods 320 form an H-shaped structure, the tops of the two support rods 320 are penetrated by the second rotating shaft 310, and the tops of the two support rods 320 are fixed to the support rods 320; two support seats 330 are provided at the bottom of the two support rods 320, and the support seats 330 are provided with internal teeth that are meshed with the gear structure of the third rotating shaft.

[0054] Two second bearings 640 are fixed to the bottom of the second end of the ladder frame body 600 , and the second bearings 640 are rotatably connected to the two ends of the second rotating shaft 310 on the swing arm 300 respectively.

[0055] Please refer to Figure 1 and Figure 3 In this embodiment, the electric ladder frame 020 includes a guide structure 400 .

[0056] In this embodiment, the guide structure 400 includes a guide base 410, a first rotating shaft 420, a guide plate 430, and a guide member. The guide base 410 is a bracket structure, with its bottom fixed to the vehicle body 010. First bearings 440 are fixed to both sides of the top of the guide base 410 via fixing plates. The first rotating shaft 420 is sleeved between the two first bearings 440 and rotatably connected to them. The two ends of the first rotating shaft 420 are respectively fixed to the guide plates 430. The other end of the guide plate 430 is provided with a guide member, which is slidably connected to a guide groove at the bottom of the first end of the ladder frame body 600.

[0057] Optionally, the guide member (not shown) may be a guide wheel or a guide portion.

[0058] Please refer to Figure 1 In this embodiment, the electric ladder frame 020 includes an auxiliary bracket 500 .

[0059] The auxiliary bracket 500 is disposed at the second end of the ladder frame body.

[0060] In this embodiment, the auxiliary bracket 500 includes a guide seat, two elastic members and two guide plates 430. The bottom of the guide seat is fixed to the vehicle body 010. Guide plates 430 are respectively provided at both ends of the top of the guide seat 410. The two elastic members are spaced apart at the top of the guide seat 410. The tops of the two elastic members are in contact with the ladder frame body and are used to assist the ladder frame body in being lifted.

[0061] Optionally, the elastic member includes a guide seat 410 and an elastic seat. A limiting groove is provided in the guide seat 410. A spring is sleeved on the bottom of the elastic seat and is limitedly connected in the limiting groove.

[0062] Please refer to Figure 1 and Figure 5 In this embodiment, the electric ladder frame 020 includes a ladder frame body 600 .

[0063] In this embodiment, a plurality of spaced ladder frames 610 are provided on the ladder frame body 600 . The end of the ladder frame body 600 facing the guide structure 400 is the first end of the ladder frame body 600 , and the end facing the auxiliary bracket 500 is the second end of the ladder frame body 600 .

[0064] The ladder frame body 600 is provided with a fixing seat 620 and a pull belt 630 . The fixing seat 620 and the pull belt 630 are arranged at a first end of the ladder frame body 600 . The fixing seat 620 is provided with a plurality of snap-fitting grooves 621 along the height direction of the fixing seat 620 .

[0065] Alternatively, refer to Figure 4 and Figure 6 The fixing base 620 includes a base 622 and a stopper 623. The stopper 623 is fixed to the base 622, and the base 622 is provided with a drawstring groove 624. The stopper 623 is provided with a plurality of engaging grooves 621, which are arranged along the height direction of the stopper 623. The plurality of engaging grooves 621 are arranged toward the first end of the ladder frame body 600, and the drawstring groove 624 is arranged toward the second end of the ladder frame body 600.

[0066] The engaging groove 621 is provided with engaging surfaces, and the engaging surfaces are spaced apart from each other from top to bottom. This arrangement allows for different sizes of ladders 700 to be adapted by adjusting the length of the pull strap 630 and engaging the engaging grooves 621 at different heights, thereby effectively locking the ladder 700 and achieving a good locking effect.

[0067] A guide groove is provided at the bottom of the first end of the ladder frame body 600 along the extension direction of the ladder frame body 600 , and the guide groove is slidably and position-limitingly connected to the guide wheel of the guide structure 400 .

[0068] Two second bearings 640 are fixed to the bottom of the second end of the ladder frame body 600 , and the second bearings 640 are rotatably connected to the two ends of the second rotating shaft 310 on the swing arm 300 respectively.

[0069] Among them, the inner side wall of the ladder frame body 600 is provided with a sliding groove, and the ladder 700 sliding frame includes a roller group and a roller frame; the ladder frame 710 is provided with a ladder 700 hook groove, and the roller group slides with the sliding groove of the ladder 700 sliding frame, which can easily load and unload the ladder 700.

[0070] Please refer to Figure 5 and Figure 6 In this embodiment, the electric ladder rack 020 includes a plurality of ladders 700 .

[0071] In this embodiment, a plurality of ladders 700 are foldably mounted on the ladder frame body 600 . The ladders 700 are provided with step frames, and the pull straps 630 secure the step frames to any one of the engaging slots 621 .

[0072] The plurality of ladders 700 may be two, three, or four, and the plurality of ladders 700 may be folded by being hinged.

[0073] Please refer to Figure 1 and Figure 5The working principle of the electric ladder rack 020 proposed in this embodiment is:

[0074] The control box 100 controls the spiral oscillating cylinder 230. The output of the spiral oscillating cylinder 230 drives the third rotating shaft at both ends. The rotation of the third rotating shaft in turn drives the support rod 320 of the swing arm 300. The support rod 320 drives the ladder frame body 600 to rotate, and the ladder frame body 600 rotates around the second bearing 640. As the ladder frame body 600 rotates, its first end is in sliding contact with the guide structure 400.

[0075] After the ladder frame 600 and the ladder 700 are used, the ladder 700 is folded and stacked on the ladder frame 600. The drawstring 630 is pulled around the ladder frame 610 of the ladder frame 600 and the step frame on the ladder 700. The drawstring 630 is adjusted in length and engaged with the engaging grooves 621 at different heights to effectively lock the ladder 700 and the ladder frame 600.

[0076] In summary, the electric ladder rack 020 proposed in the present invention can adapt to ladders 700 that do not meet specifications by setting a fixed seat 620 and a pull belt 630, and adjusting the length of the pull belt 630 and locking and fixing it with the clamping groove 621 of different heights, thereby locking and fixing the ladder rack body 600 and the ladder 700; the electric ladder rack 020 set up in this way can be suitable for ladders 700 of various specifications and models, and has a good locking effect, thereby improving the versatility and practicality of the electric ladder rack 020 and facilitating mold production.

[0077] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An electric ladder rack, characterized in that: include: A ladder frame body, wherein the first end of the ladder frame body is slidably connected to the guide structure, the second end of the ladder frame body is rotatably connected to the swing arm, a plurality of ladder frames are provided on the ladder frame body, the ladder frame body is provided with a fixing seat and a pull belt, the fixing seat and the pull belt are provided at the first end of the ladder frame body, and the fixing seat is provided with a plurality of clamping grooves along the height direction of the fixing seat; A plurality of pull-up ladders are foldably arranged on the ladder frame body, a step frame is provided on the pull-up ladder, and the pull belt fixes the step frame to any one of the clamping slots.

2. The electric ladder rack according to claim 1, characterized in that: The fixing seat includes a base and a stopper, the stopper is fixed on the base, and the base is provided with a drawstring groove; A plurality of the clamping grooves are provided on the stop block, and the plurality of the clamping grooves are arranged along the height direction of the stop block.

3. The electric ladder rack according to claim 2, characterized in that: The clamping groove is provided with a clamping surface, and a plurality of the clamping surfaces are arranged at intervals from top to bottom; The plurality of clamping grooves are arranged toward the first end of the ladder frame body, and the drawstring groove is arranged toward the second end of the ladder frame body.

4. The electric ladder rack according to claim 1, characterized in that: The guide structure includes a guide seat, a first rotating shaft and a guide plate. The bottom of the guide seat is fixed to the vehicle body, and the top of the guide seat is fixed with two first bearings via a fixing plate. The first rotating shaft is sleeved in the two first bearings and is rotatably connected to the first bearings, and the two ends of the first rotating shaft are respectively fixed to the guide plates; A guide piece is provided at the other end of the guide plate, and the guide piece is slidably and position-limitingly connected to the first end of the ladder frame body.

5. The electric ladder rack according to claim 4, characterized in that: A guide groove is provided at the bottom of the ladder frame body along the extension direction of the ladder frame body, and the guide member is slidingly limited in the guide groove; The guide member includes a guide wheel or a guide portion.

6. The electric ladder rack according to claim 1, characterized in that: The electric ladder frame further includes an auxiliary bracket, wherein the auxiliary bracket is arranged at the second end of the ladder frame body; The auxiliary bracket includes a guide seat, two elastic members and two guide plates. The bottom of the guide seat is fixed to the vehicle body, and the guide plates are respectively arranged at both ends of the top of the guide seat. The two elastic members are arranged at intervals on the top of the guide seat. The tops of the two elastic members abut against the ladder frame body and are used to assist the ladder frame body in being lifted.

7. The electric ladder rack according to claim 6, characterized in that: The elastic member includes a guide seat and an elastic seat. A limiting groove is provided in the guide seat. A spring is sleeved on the bottom of the elastic seat and is limitedly connected in the limiting groove.

8. The electric ladder rack according to claim 1, characterized in that: The electric ladder rack further includes a driving member and a control box, wherein the control box is electrically connected to the driving member, and the control box and the driving member are arranged on the vehicle body; One end of the swing rod is rotatably connected to the driving member, and the other end is rotatably connected to the bottom of the second end of the ladder frame body; A manual hydraulic device is provided in the control box.

9. The electric ladder rack according to claim 8, characterized in that: The swing arm includes a second rotating shaft and two connected and fixed support rods, and the second rotating shaft is fixed to the tops of the two support rods; A support seat is provided at the bottom of the support rod, and the support seat is transmission-connected to the driving member.

10. A fire truck, characterized in that: include: The electric ladder frame according to any one of claims 1 to 9; The vehicle box body, the electric ladder frame is arranged on the top of the vehicle box body.

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