Fire fighting truck rolling gate capable of being rapidly opened and closed

Abstract

The utility model discloses a fire fighting truck roller shutter capable of being opened and closed quickly, which relates to the technical field of fire fighting truck doors and comprises a side wall and a roller shutter door, the side wall is arranged at an opening of a fire fighting carriage, the roller shutter door is slidably connected with a slide rail, a fixing shaft is fixedly arranged at the upper end of the side wall and positioned on one side of the slide rail, and a vortex rolling plate is fixedly wound on the fixing shaft. A limiting cavity is fixedly formed in the bottom of the side edge wall, a limiting block is arranged in the limiting cavity through a spring mechanism and penetrates into the sliding rail, the upper end, located in the sliding rail, of the limiting block is provided with a first inclined face with a large dip angle, and the lower end of the limiting block is provided with a second inclined face with a small dip angle. Side edge bases are fixedly arranged on the two sides of the bottom edge, and limiting grooves are formed in the side edge bases. The roller shutter door fixing device is simple in structure, the roller shutter door can be fixed when being pulled down, when the roller shutter door is lifted up, rolling of the roller shutter door can be accelerated through the rolling mechanism on the upper portion, and the roller shutter door fixing device is high in practicability and suitable for popularization.

Description

Technical Field

[0001] This utility model belongs to the field of fire truck door technology, specifically relating to a fast-opening and closing fire truck roller shutter door. Background Technology

[0002] Roller shutters are doors with multiple articulated door panels linked together, rotating up and down around a central roller within fixed tracks. Fire trucks can transport firefighters to disaster scenes and provide them with various tools for rescue operations. Because roller shutters do not occupy external space when open, some fire trucks are equipped with them.

[0003] When fire trucks are dispatched, it is necessary to save as much time as possible. Therefore, the roller shutter doors on them need to be opened and closed quickly. Existing fire truck roller shutter doors require a locking mechanism when closing and an unlocking mechanism when opening. Generally, the roller shutter door is lifted manually. However, when using a motor or other drive mechanism to roll it up, the structure is too complex and prone to failure. Utility Model Content

[0004] The purpose of this utility model is to provide a fire truck roller shutter door that can be opened and closed quickly. It has a simple structure and can be fixed when the roller shutter door is pulled down. When the roller shutter door is raised, the upper winding mechanism will speed up the winding of the roller shutter door. It is highly practical and suitable for promotion.

[0005] This utility model provides the following technical solution: a fast-opening and closing fire truck roller shutter door, including side walls and roller shutter door. The side walls are located at the opening of the fire truck compartment. A slide rail is provided on one side of the two side walls facing each other. The roller shutter door is slidably connected to the slide rail. A fixed shaft is fixedly provided at the upper end of the side wall on one side of the slide rail. A vortex plate is fixedly wound on the fixed shaft. A coiled drum is fixedly provided at the other end of the vortex plate. The upper end of the roller shutter door is fixedly connected to the coiled drum and wound around its outer wall.

[0006] A limiting cavity is fixedly provided at the bottom of the side wall. A limiting block is provided in the limiting cavity through a spring mechanism. The limiting block passes through the slide rail. The upper end of the limiting block located in the slide rail has a first inclined surface with a large angle. The lower end of the limiting block has a second inclined surface with a small angle. A bottom edge is fixedly provided at the bottom of the roller shutter door. Side seats are fixedly provided on both sides of the bottom edge. The side seats have limiting grooves with a shape that matches the limiting block.

[0007] Preferably, a spring post is provided inside the limiting cavity, and a spring pad is fixedly provided on the spring post. The spring pad is fixedly connected to the limiting block and rests against the side wall of the limiting cavity. A support spring sleeved on the spring post is fixedly provided on the other side of the spring pad.

[0008] Preferably, the vortex plate is an elastic plate that still has a rebounding tension when the roller shutter is fully wound onto the roller drum.

[0009] Preferably, the inclination angle of the second inclined surface is such that when the limiting block is inserted into the limiting groove, the thrust provided by the support spring overcomes the upward pulling force of the vortex plate.

[0010] The beneficial effects of this utility model are: simple structure, it can be fixed when the roller shutter is pulled down, and when the roller shutter is raised, the upper winding mechanism will speed up the winding of the roller shutter, making it highly practical, as detailed below:

[0011] (1) This utility model is equipped with a vortex roller plate. When the roller shutter door is pulled down, the roller drum rotates accordingly, pulling the vortex roller plate to retract. When the roller shutter door is opened, the rebound force of the vortex roller plate causes the roller drum to rotate rapidly, opening the roller shutter door, thereby achieving rapid door opening.

[0012] (2) This utility model is provided with a limiting block. When the roller shutter door is pulled down, the side seat on its side presses down on the first inclined surface on the limiting block, causing it to retract into the limiting cavity. When passing through the limiting groove, the limiting block is popped out by the support spring. Because the first inclined surface has a large inclination angle, it is easier to retract into the limiting cavity when squeezed. The second inclined surface has a small inclination angle, which creates greater resistance. Overcoming the upward pulling force brought by the vortex plate, the roller shutter door can be closed and locked. When it is necessary to open the roller shutter door, the bottom edge is raised. At this time, the upward pulling force of the vortex plate is an assist, pushing the second inclined surface below the limiting block, causing it to retract into the limiting cavity, and thus opening the locking mechanism of the roller shutter door. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is an overall schematic diagram of the present invention;

[0015] Figure 2 This is a cross-sectional view of the present invention;

[0016] Figure 3 This is a cross-sectional view of the limiting cavity of this utility model;

[0017] The markings in the diagram are as follows: 1. Side wall; 2. Slide rail; 3. Roller shutter door; 4. Limiting cavity; 5. Limiting block; 6. Roller drum; 7. Vortex plate; 8. Fixed shaft; 9. Bottom edge; 10. Side seat; 11. Limiting groove; 12. Spring pad; 13. Spring column; 14. Support spring; 15. First inclined surface; 16. Second inclined surface. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," 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 utility model 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 utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The structural features of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] See Figure 1-2 A fast-opening and closing fire truck roller shutter door includes side walls 1 and roller shutter door 3. The side walls 1 are located at the opening of the fire truck compartment. The two side walls 1 are provided with slide rails 2 on opposite sides. The roller shutter door 3 is slidably connected to the slide rails 2. A fixed shaft 8 is fixedly provided at the upper end of the side walls 1 on one side of the slide rails 2. A vortex plate 7 is fixedly wound on the fixed shaft 8. A coiled drum 6 is fixedly provided at the other end of the vortex plate 7. The upper end of the roller shutter door 3 is fixedly connected to the coiled drum 6 and wound around its outer wall. When the roller shutter door 3 is pulled down, the coiled drum 6 rotates accordingly, pulling the vortex plate 7 to retract. The vortex plate 7 is an elastic plate. When the roller shutter door 3 is opened, the rebound force of the vortex plate 7 causes the coiled drum 6 to rotate rapidly. When the roller shutter door 3 is fully wound on the coiled drum 6, it still has a rebound force, so that the roller shutter door 3 can still be quickly rolled up when it is raised to the top.

[0023] See Figure 1-3A limiting cavity 4 is fixedly provided at the bottom of the side wall 1. A limiting block 5 is provided in the limiting cavity 4 through a spring mechanism. The limiting block 5 passes through the slide rail 2. A spring post 13 is provided in the limiting cavity 4. A spring pad 12 is fixedly provided on the spring post 13. The spring pad 12 is fixedly connected to the limiting block 5 and rests against the side wall of the limiting cavity 4. A support spring 14 is fixedly provided on the other side of the spring pad 12 and sleeved on the spring post 13. The limiting block 5 is ejected by the support spring 14. The upper end of the limiting block 5 located in the slide rail 2 has a first inclined surface 15 with a large angle. The lower end of the limiting block 5 has a second inclined surface 16 with a small angle. The first inclined surface 15 has a large inclination angle, making it easier to retract into the limiting cavity 4 when squeezed, while the second inclined surface 16 has a small inclination angle, resulting in greater resistance. The bottom edge 9 is fixedly provided at the bottom of the roller shutter door 3, and side seats 10 are fixedly provided on both sides of the bottom edge 9. The side seats 10 squeeze the first inclined surface 15, causing it to retract into the limiting cavity 4. The side seats 10 are provided with limiting grooves 11 whose shape matches the limiting block 5. The inclination angle of the second inclined surface 16 is such that when the limiting block 5 is inserted into the limiting groove 11, the thrust provided by the support spring 14 overcomes the upward pull of the vortex plate 7, causing the limiting block 5 to be locked in the limiting groove 11, thus fixing the roller shutter door 3.

[0024] This utility model relates to a fast-opening and closing fire truck roller shutter door. It has a simple structure and can be fixed when the roller shutter door is pulled down. When the roller shutter door is raised, the upper winding mechanism will speed up the winding of the roller shutter door. It is highly practical and suitable for widespread application.

[0025] For specific usage, please refer to... Figure 1-3 When the roller shutter door 3 is pulled down, the roller drum 6 rotates accordingly, pulling the vortex plate 7 to retract. The side seat 10 on the side of the roller shutter door 3 presses down on the first inclined surface 15 on the limiting block 5, causing it to retract into the limiting cavity 4. When passing through the limiting groove 11, the limiting block 5 is ejected by the support spring 14. Because the first inclined surface 15 has a large inclination angle, it is easier to retract into the limiting cavity 4 when squeezed, while the second inclined surface 16 has a small inclination angle, forming greater resistance, which overcomes the resistance brought by the vortex plate 7. The upward pulling force can close and lock the roller shutter door 3. When it is necessary to open the roller shutter door 3, the bottom edge 9 is raised. At this time, the upward pulling force of the vortex plate 7 is an assist, pushing the second inclined surface 16 below the limit block 5 and causing it to retract into the limit cavity 4, which can open the locking mechanism of the roller shutter door 3. After the roller shutter door 3 is opened, the rebound force of the vortex plate 7 causes the roller drum 6 to rotate rapidly, opening the roller shutter door 3, thereby realizing the rapid locking and opening of the roller shutter door 3.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick opening and closing fire truck shutter, comprising side walls (1), a roller shutter (3), the side walls (1) are at the opening of the fire truck compartment, the opposite sides of the two side walls (1) are provided with slide rails (2), and the roller shutter (3) is slidably connected with the slide rails (2), characterized in that, The upper end of the side wall (1) is fixed with a fixed shaft (8) on one side of the slide rail (2), the fixed shaft (8) is fixed with a spiral coil plate (7), the other end of the spiral coil plate (7) is fixed with a coil drum (6), the upper end of the roller shutter door (3) is fixedly connected with the coil drum (6) and is coiled on the outer wall of the coil drum (6); The bottom of the side wall (1) is fixed with a limiting cavity (4), the limiting cavity (4) is provided with a limiting block (5) through a spring mechanism, the limiting block (5) penetrates into the slide rail (2), the upper end of the limiting block (5) in the slide rail (2) is provided with a first inclined surface (15) with a large inclination angle, the lower end of the limiting block (5) is provided with a second inclined surface (16) with a small inclination angle, the bottom of the roller shutter door (3) is fixed with a bottom edge (9), the both sides of the bottom edge (9) are fixed with side seats (10), the side seats (10) are provided with limiting grooves (11) matched with the limiting block (5).

2. A quick opening and closing fire truck shutter according to claim 1, characterized in that, The limiting cavity (4) is provided with a spring column (13), the spring column (13) is fixed with a spring pad (12), the spring pad (12) is fixedly connected with the limiting block (5) and is located at the side wall of the limiting cavity (4), the other side of the spring pad (12) is fixed with a supporting spring (14) sleeved on the spring column (13).

3. A quick opening and closing fire truck shutter according to claim 1, characterized in that, The spiral coil plate (7) is an elastic plate, which still has a rebounding pulling force when the roller shutter door (3) is completely coiled on the coil drum (6).

4. A quick opening and closing fire truck shutter according to claim 1, characterized in that, The inclination angle of the second inclined surface (16) satisfies that when the limiting block (5) is inserted into the limiting groove (11), the pushing force provided by the supporting spring (14) overcomes the upward pulling force of the spiral coil plate (7).

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