Extensible fire fighting operation platform at the back of a fire truck

Abstract

The utility model discloses a fire engine tail extendible fire extinguishing operation pedal, including stretch subassembly, the extension plate outside surface fixedly connected with side edge protection plate, side edge protection plate bottom side surface fixedly connected with electric telescopic link, the utility model relates to fire fighting equipment technical field, the fire engine tail extendible fire extinguishing operation pedal, through the sliding fit of rectangle installation shell and extension plate, make the flexible adjustment of pedal length, can according to the actual demand such as the rescue point distance of fire fighting operation site, through electric telescopic link drive extension plate and extend or retract, effectively expand the operation coverage, side edge protection plate can form the protection to the side of operating personnel, avoid personnel from the side of pedal slide, auxiliary stabilizing plate can strengthen the structural stability after extension plate stretch, prevent extension plate from happening when the wobble of bearing operating personnel and equipment weight, improve operation security and reliability.

Description

Technical Field

[0001] This utility model relates to the field of fire-fighting equipment technology, specifically an extendable fire-fighting operation pedal at the rear of a fire truck. Background Technology

[0002] Traditional equipment is convenient to use, but fixed-length or hidden folding pedals cannot meet the needs of multi-distance operation, narrow space compatibility, dynamic scene response, and safe transfer of trapped personnel due to their non-adjustable size. In addition, they have poor versatility and require additional tools, resulting in low efficiency. With the continuous development of the fire protection industry, there is a demand for extendable pedals to solve the shortcomings of traditional pedals and adapt to complex fire protection operation scenarios.

[0003] The patent publication number "CN212765982U" discloses "a concealed folding footboard for the rear compartment of a fire truck", which includes: a flip panel, a footboard and pull rods. The flip panel has a frame body, which is hinged to the two end side walls of the storage space through support plates. The footboard is hinged to the frame body. Sliding grooves are provided on both ends, and sliding bodies are respectively embedded in the sliding grooves. One end of each of the two pull rods is hinged to the sliding body, and the other end is hinged to the two end side walls of the storage space. Pneumatic springs are respectively installed between the two support plates and the two end side walls of the storage space.

[0004] The aforementioned patent utilizes a combination of a pull rod and a sliding groove to automatically flatten and fold the pedal during unfolding and retraction, further improving its operational efficiency. It also boasts advantages such as simple structure, reliable performance, stable operation, and ease of use. Applied to fire trucks, it can enhance response speed and operational efficiency in disaster relief operations. However, the core movement of this device is folding around a hinge axis. After unfolding, it can only rotate from a concealed state to a horizontal position, with its overall length and extension distance from the vehicle body remaining completely fixed. This limits its applicability to complex working environments. Furthermore, although the pedal can be hidden in the fire truck's rear compartment when not in use, its complex structure still requires considerable storage space. This may affect the storage space for other equipment and materials within the fire truck's rear compartment.

[0005] To address this issue, the present invention provides an extendable fire-fighting operating platform at the rear of a fire truck. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an extendable fire-fighting operating platform at the rear of a fire truck, thus solving the aforementioned problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an extendable fire extinguishing operating platform at the rear of a fire truck, comprising an extension assembly. The extension assembly includes a rectangular mounting shell, an extension plate slidably connected to the inner wall of the rectangular mounting shell, a side protective plate fixedly connected to the outer surface of the extension plate, an electric telescopic rod fixedly connected to the bottom side surface of the side protective plate, a rear strip plate fixedly connected to the end of the electric telescopic rod, a top side surface of the rear strip plate fixedly connected to the side surface of the rectangular mounting shell, an auxiliary stabilizing plate fixedly connected to the top side surface of the side protective plate, and a lower surface of the auxiliary stabilizing plate movably connected to the upper surface of the rectangular mounting shell.

[0008] Furthermore, both sides of the rectangular mounting shell are fixedly connected with extension strips, and each extension strip is fixedly connected to both ends with a connecting plate. The connecting plate is rotatably connected to a rotating column, and a guardrail is fixedly connected between two rotating columns on the same side.

[0009] By adopting the above technical solution, the sliding cooperation between the rectangular mounting shell and the extension plate allows for flexible adjustment of the tread length. The extension plate can be extended or retracted by an electric telescopic rod according to actual needs such as the distance to the rescue point at the fire operation site, effectively expanding the operation coverage area. The side protection plate can protect the side of the operator and prevent the operator from slipping off the side of the tread. The auxiliary stabilizing plate can enhance the structural stability of the extension plate after it is extended, prevent the extension plate from shaking when bearing the weight of the operator and equipment, and improve the safety and reliability of the operation.

[0010] Furthermore, an upper positioning cylinder is fixedly connected to the top side surface of the guardrail, and a lower positioning cylinder is fixedly connected to the upper surface of the extension strip. There are two upper and two lower positioning cylinders on the same side, and their positions correspond to each other. Positioning rods are movably connected to the inner walls of the corresponding upper and lower positioning cylinders, and connecting rods are fixedly connected to the top ends of the two positioning rods.

[0011] By adopting the above technical solution, the positioning rod can be inserted into the upper and lower positioning cylinders at the corresponding positions to achieve rapid positioning and fixation of the guardrail after it is unfolded, preventing the guardrail from rotating accidentally during operation; the connecting rod connects the two positioning rods into one, which not only facilitates synchronous insertion and removal operations, but also enhances the integrity and stability of the positioning structure and improves the ease of operation.

[0012] Furthermore, a support strip is fixedly connected between the rear strip plate and the rectangular mounting shell, and there are two support strips in corresponding positions.

[0013] By adopting the above technical solution, the two corresponding support bars can strengthen the connection between the rear strip plate and the rectangular mounting shell, improve the structural strength of the connection between the two, effectively disperse the force generated when the electric telescopic rod is driven and when the pedal is under load, avoid damage to the connection due to excessive force, and extend the service life of the pedal.

[0014] Furthermore, a folding assembly is provided behind the rear strip plate. The folding assembly includes a mounting plate, a strip-shaped connecting block is fixedly connected to the inner surface of the mounting plate, a rotating shaft is fixedly connected to the outer surface of the strip-shaped connecting block, an L-shaped connecting block is rotatably connected to the side surface of the rotating shaft, and the side surface of the L-shaped connecting block is fixedly connected to the side surface of the rear strip plate.

[0015] By adopting the above technical solution, the L-shaped connecting block and the strip connecting block are rotated relative to each other by a rotating shaft, so that the entire pedal can be rotated around the mounting plate to achieve folding. After folding, the space occupied by the pedal at the rear of the fire truck can be further reduced, which can adapt to the rear layout of different vehicle models. The mounting plate makes it easy to install the pedal stably at the rear of the fire truck as a whole, ensuring the structural firmness of the pedal after installation.

[0016] Furthermore, there are two of each of the strip-shaped connecting block, the rotating shaft, and the L-shaped connecting block, and their positions correspond to each other. A locking plate is fixedly connected to the bottom side surface of the mounting plate. There are two locking plates, and their positions correspond to each other. The upper surface of the locking plate is movably connected to the lower surface of the rear strip plate.

[0017] By adopting the above technical solution, the two corresponding locking plates can support and limit the rear strip plate when the pedal is unfolded, preventing the pedal from rotating downward due to force when it is under load, and ensuring the horizontal stability of the pedal after it is unfolded; at the same time, the limiting function of the locking plates can keep the pedal at the optimal working angle, improving working comfort and safety. Beneficial effects

[0018] This utility model provides an extendable fire-fighting operating platform at the rear of a fire truck. Compared with the prior art, it has the following advantages:

[0019] 1. The fire truck features an extendable fire-fighting operating platform at the rear. Through the sliding cooperation between the rectangular mounting shell and the extension plate, the length of the platform can be flexibly adjusted. It can be extended or retracted by an electric telescopic rod according to actual needs such as the distance to the rescue point at the fire-fighting site, effectively expanding the operating coverage area. The side guard plate can protect the side of the operator and prevent people from slipping off the side of the platform. The auxiliary stabilizing plate can enhance the structural stability of the extended plate after it is extended, preventing the extended plate from shaking when bearing the weight of the operator and equipment, thus improving the safety and reliability of the operation.

[0020] 2. The fire truck features an extendable fire-fighting operating pedal at the rear. The L-shaped connecting block and the strip connecting block rotate relative to each other via a rotating shaft, allowing the entire pedal to fold around the mounting plate. After folding, the pedal is further reduced in size at the rear of the fire truck, making it compatible with the rear layout of different vehicle models. The mounting plate facilitates the stable installation of the pedal at the rear of the fire truck, ensuring the structural integrity of the pedal after installation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a perspective view of the external structure of this utility model;

[0023] Figure 2 This is a structural front view of the present invention;

[0024] Figure 3 This is the utility model Figure 2 Enlarged view of the structure at point A in the image;

[0025] Figure 4 This is a bottom view of the structure of this utility model.

[0026] In the diagram: 1. Extension assembly; 101. Rectangular mounting shell; 102. Extension plate; 103. Extension strip; 104. Side guard plate; 105. Electric telescopic rod; 106. Rear strip plate; 107. Auxiliary stabilizing plate; 108. Support strip; 109. Lower positioning cylinder; 110. Connecting plate; 111. Rotating column; 112. Guardrail; 113. Upper positioning cylinder; 114. Positioning rod; 115. Connecting rod; 2. Folding assembly; 201. Mounting plate; 202. Strip connecting block; 203. Rotating shaft; 204. L-shaped connecting block; 205. Locking plate. Detailed Implementation

[0027] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0028] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] Reference Figures 1 to 4 This application provides an extendable fire-fighting operating platform at the rear of a fire truck, including an extension assembly 1. The extension assembly 1 includes a rectangular mounting shell 101. An extension plate 102 is slidably connected to the inner wall of the rectangular mounting shell 101. A side guard plate 104 is fixedly connected to the outer surface of the extension plate 102. An electric telescopic rod 105 is fixedly connected to the bottom side surface of the side guard plate 104. A rear strip plate 106 is fixedly connected to the end of the electric telescopic rod 105. The top side surface of the rear strip plate 106 is fixedly connected to the side surface of the rectangular mounting shell 101. An auxiliary stabilizing plate 107 is fixedly connected to the top side surface of the side guard plate 104. The lower surface of the auxiliary stabilizing plate 107 is movably connected to the upper surface of the rectangular mounting shell 101. Extension strips 103 are fixedly connected to both sides of the rectangular mounting shell 101. A connecting plate 110 is fixedly connected to both ends of each extension strip 103. A rotating column 111 is rotatably connected inside the connecting plate 110. A guardrail 112 is fixedly connected between two rotating columns 111 on the same side.

[0030] In this embodiment, the extension assembly 1 provides a sliding support base for the extension plate 102 through the rectangular mounting shell 101. When the pedal length needs to be adjusted, the electric telescopic rod 105 is activated and extends or shortens, causing the extension plate 102, which is fixedly connected to the side protection plate 104, to slide along the inner wall of the rectangular mounting shell 101, thereby extending and retracting the pedal. The side protection plate 104 moves synchronously with the extension plate 102, always providing side protection for the operator. The auxiliary stabilizing plate 107 remains in contact with the upper surface of the rectangular mounting shell 101 during the sliding of the extension plate 102, enhancing the structural stability of the extension plate 102 after extension through surface contact support. At the same time, the connecting plate 110 on the extension strip 103 provides a rotation mounting point for the rotating column 111, allowing the guardrail 112 to rotate around the axis of the rotating column 111, thus enabling the guardrail 112 to be extended and retracted.

[0031] Reference Figures 1 to 4 In one aspect of this embodiment, an upper positioning cylinder 113 is fixedly connected to the top side surface of the guardrail 112, and a lower positioning cylinder 109 is fixedly connected to the upper surface of the extension strip 103. There are two upper positioning cylinders 113 and two lower positioning cylinders 109 on the same side, and their positions correspond. Positioning rods 114 are movably connected to the inner walls of the upper positioning cylinders 113 and the lower positioning cylinders 109, and connecting rods 115 are fixedly connected to the top ends of the two positioning rods 114.

[0032] In this embodiment, when the guardrail 112 is rotated to the unfolded position, the upper positioning cylinder 113 and the lower positioning cylinder 109 are aligned. At this time, the positioning rod 114 is inserted into the aligned upper positioning cylinder 113 and lower positioning cylinder 109. The rotational freedom of the guardrail 112 is restricted by the cooperation of the positioning rod 114 and the two positioning cylinders, thereby fixing the guardrail 112. The connecting rod 115 connects the two positioning rods 114 into one unit. During operation, the two positioning rods 114 can be inserted and removed synchronously by pulling or pushing the connecting rod 115, thereby realizing the synchronous operation of fixing and unlocking the guardrail 112.

[0033] Reference Figures 1 to 4 In one aspect of this embodiment, a support bar 108 is fixedly connected between the rear strip plate 106 and the rectangular mounting shell 101, and there are two support bars 108 in total, with corresponding positions.

[0034] In this embodiment, two corresponding support bars 108 are respectively connected to the rear strip plate 106 and the rectangular mounting shell 101 to form a triangular support structure. By utilizing the stability principle of triangles, the driving force generated when the electric telescopic rod 105 is working and the pressure when the pedal is under load are distributed and transmitted to the rectangular mounting shell 101, so as to avoid deformation or damage at the connection between the rear strip plate 106 and the rectangular mounting shell 101 due to excessive local stress.

[0035] Reference Figures 1 to 4 In one aspect of this embodiment, a folding assembly 2 is provided behind the rear strip plate 106. The folding assembly 2 includes a mounting plate 201. A strip connecting block 202 is fixedly connected to the inner surface of the mounting plate 201. A rotating shaft 203 is fixedly connected to the outer surface of the strip connecting block 202. An L-shaped connecting block 204 is rotatably connected to the side surface of the rotating shaft 203. The side surface of the L-shaped connecting block 204 is fixedly connected to the side surface of the rear strip plate 106.

[0036] In this embodiment, the mounting plate 201 is used to fix the rear of the fire truck, providing the mounting base for the entire pedal; the strip-shaped connecting block 202 is fixedly connected to the rotating shaft 203, and the L-shaped connecting block 204 is sleeved on the outside of the rotating shaft 203 and can rotate around the axis of the rotating shaft 203. Since the L-shaped connecting block 204 is fixedly connected to the rear strip plate 106, pushing or pulling the pedal body can drive the L-shaped connecting block 204 to rotate around the rotating shaft 203, realizing the folding and unfolding of the pedal body relative to the mounting plate 201.

[0037] Reference Figures 1 to 4 In one aspect of this embodiment, there are two strip connecting blocks 202, two rotating shafts 203, and two L-shaped connecting blocks 204, and their positions correspond to each other. A positioning plate 205 is fixedly connected to the bottom side surface of the mounting plate 201. There are two positioning plates 205, and their positions correspond to each other. The upper surface of the positioning plate 205 is movably connected to the lower surface of the rear strip plate 106.

[0038] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0039] Working principle: In use, first, external force pushes the extension component 1, causing the L-shaped connecting block 204 to rotate around the rotating shaft 203 until the rear strip plate 106 abuts against the locking plate 205 to achieve the unfolding and positioning of the pedal body. Then, rotate the guardrail 112 to be perpendicular to the pedal, push the connecting rod 115 to make the positioning rod 114 insert into the aligned upper positioning cylinder 113 and lower positioning cylinder 109 to fix the guardrail 112. Then, according to the operation requirements, start the electric telescopic rod 105 to drive the extension plate 102 to slide along the rectangular mounting shell 101 to achieve length adjustment. During the adjustment process, the side guardrail 104 provides synchronous protection, the auxiliary stabilizing plate 107 enhances stability, and the support bar 108 distributes the force. After the operation is completed, first pull the connecting rod 115 to pull out the positioning rod 114 and retract the guardrail 112. Then, retract the extension plate 102 through the electric telescopic rod 105. Finally, rotate the extension component 1 in the opposite direction to the folded storage state.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fire truck tail extendable fire extinguishing operation footboard, comprising an extension assembly (1), characterized in that: The extension assembly (1) includes a rectangular mounting shell (101), an extension plate (102) is slidably connected to the inner wall of the rectangular mounting shell (101), a side protection plate (104) is fixedly connected to the outer surface of the extension plate (102), an electric telescopic rod (105) is fixedly connected to the bottom side surface of the side protection plate (104), a rear strip plate (106) is fixedly connected to the end of the electric telescopic rod (105), the top side surface of the rear strip plate (106) is fixedly connected to the side surface of the rectangular mounting shell (101), an auxiliary stabilizing plate (107) is fixedly connected to the top side surface of the side protection plate (104), and the lower surface of the auxiliary stabilizing plate (107) is movably connected to the upper surface of the rectangular mounting shell (101).

2. The extendable rear step for fire apparatus of claim 1, wherein: The rectangular mounting shell (101) has extension strips (103) fixedly connected to both sides of its surface. Each extension strip (103) has a connecting plate (110) fixedly connected to both ends. The connecting plate (110) has a rotating column (111) rotatably connected inside. A guardrail (112) is fixedly connected between two rotating columns (111) on the same side.

3. A tailboard extension for a fire apparatus as set forth in claim 2, wherein: The top side surface of the guardrail (112) is fixedly connected to an upper positioning cylinder (113), and the upper surface of the extension strip (103) is fixedly connected to a lower positioning cylinder (109). There are two upper positioning cylinders (113) and two lower positioning cylinders (109) on the same side, and their positions correspond. The inner walls of the upper positioning cylinder (113) and the lower positioning cylinder (109) are movably connected to positioning rods (114), and the top ends of the two positioning rods (114) are fixedly connected to connecting rods (115).

4. The extendable rear bumper step for fire apparatus of claim 1, wherein: A support strip (108) is fixedly connected between the rear strip plate (106) and the rectangular mounting shell (101), and there are two support strips (108) in corresponding positions.

5. The extendable rear bumper step for fire apparatus of claim 1, wherein: A folding assembly (2) is provided behind the rear strip plate (106). The folding assembly (2) includes a mounting plate (201). A strip connecting block (202) is fixedly connected to the inner surface of the mounting plate (201). A rotating shaft (203) is fixedly connected to the outer surface of the strip connecting block (202). An L-shaped connecting block (204) is rotatably connected to the side surface of the rotating shaft (203). The side surface of the L-shaped connecting block (204) is fixedly connected to the side surface of the rear strip plate (106).

6. A tailboard extension for a fire apparatus as set forth in claim 5, wherein: The number of strip connecting blocks (202) and the number of rotating shafts (203) and L-shaped connecting blocks (204) are two and their positions correspond. The bottom side surface of the mounting plate (201) is fixedly connected to a positioning plate (205). The number of positioning plates (205) is two and their positions correspond. The upper surface of the positioning plate (205) is movably connected to the lower surface of the rear strip plate (106).

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