Fire vehicle roll-up door with hover mechanism

Abstract

The utility model discloses a fire vehicle rolling slats door with hovering mechanism, include: fixed frame, rolling slats door body, fixed component and hovering subassembly, and the rolling slats door body sets up at the back of fixed frame, and fixed component includes the winding shaft of setting at the top of rolling slats door body, and the connecting place of winding shaft and fixed frame is provided with fixed part. The utility model discloses through the design of ratchet wheel, gap, pawl, springback piece and limiting piece, when in the opening of rolling slats door body, moving upwards to the rolling slats door body, first through the winding shaft drive ratchet wheel and rotate, pawl is pushed by the gap at this time, and the end of pawl does not contact with ratchet wheel, when needing the bottom of rolling slats door body and hover in a position, first make pawl be located at the position of gap, then pull down rolling slats door body, make pawl insert ratchet wheel, limit rolling slats door body and move upwards through ratchet wheel to the height of limiting door opening, avoid the situation of unable to close rolling slats door.

Description

Technical Field

[0001] This utility model relates to the field of roller shutter door technology, and in particular to a fire truck roller shutter door with a hovering mechanism. Background Technology

[0002] Fire truck roller shutter doors are a special type of door designed for the rapid access of fire-fighting equipment.

[0003] On fire trucks, objects are placed in designated spaces and sealed off by roller shutters to prevent objects from moving out during vehicle movement. When loading or unloading objects, the roller shutter is opened, but it needs to be closed afterward. Because the opening height of the shutter cannot be adjusted, workers may be unable to pull it closed. Therefore, this solution proposes a fire truck roller shutter with a hovering mechanism to address these issues. Utility Model Content

[0004] The purpose of this utility model is to provide a fire truck roller shutter door with a hovering mechanism to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fire truck roller shutter door with a hovering mechanism, comprising:

[0006] Fixture;

[0007] A roller shutter door body, wherein the roller shutter door body is disposed on the back of the fixing frame;

[0008] The fixing component includes a winding shaft disposed at the top of the roller shutter door body, and a fixing member is provided at the connection between the winding shaft and the fixing frame;

[0009] A hovering assembly includes a ratchet fixedly connected to one end of a take-up shaft. The ratchet has symmetrical notches at its top and bottom. A pawl is provided at the top of the ratchet, a spring-loaded component is provided at the top of the pawl, and a limiting component is provided on one side of the pawl.

[0010] Preferably, a guide rail is provided at the connection between the fixing frame and the roller shutter door body, and the guide rail is used to limit the movement direction of the roller shutter door body.

[0011] Preferably, a pull rod is provided on the front of the roller shutter door body, and the pull rod is used to pull the roller shutter door body.

[0012] Preferably, the fixing component includes a mounting plate that is horizontally and centrally symmetrically fixed to the back of the fixing frame, a fixing rod that is fixedly connected to one side of the mounting plate, and a positioning bearing that is provided at the connection between the fixing rod and the winding shaft.

[0013] Preferably, the ratchet has a first through hole in the middle, and the fixing rod is inserted into the inside of the first through hole.

[0014] Preferably, the spring-loaded component includes a top frame fixedly connected to one side of the mounting plate, and a spring for pulling the pawl is provided on the side of the top frame opposite to the pawl.

[0015] Preferably, the limiting component includes a fixed base fixedly connected to one side of the mounting plate, a threaded rod threadedly connected to one side of the fixed base, a second through hole opened at the top of the pawl, the threaded rod being inserted into the interior of the second through hole, and nuts symmetrically arranged on both sides of the pawl, the nuts being threadedly sleeved on one side of the threaded rod.

[0016] The technical effects and advantages of this utility model are as follows:

[0017] This invention utilizes a design incorporating a ratchet, notch, pawl, spring-loaded mechanism, and limiting element. When the roller shutter is opened, it moves upwards, first causing the ratchet to rotate via the winding shaft. At this point, the pawl is pushed by the notch, and its end does not contact the ratchet. When the bottom of the roller shutter needs to be suspended at a certain position, the pawl is first positioned at the notch, and then the roller shutter is pulled downwards, causing the pawl to insert into the ratchet. The ratchet then limits the upward movement of the roller shutter, thereby limiting the opening height and preventing the roller shutter from failing to close. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a front sectional view of the fixing component of this utility model.

[0020] Figure 3 This is a side sectional view of the present invention.

[0021] Figure 4 This is a front cross-sectional view of the limiting component of this utility model.

[0022] In the diagram: 1. Fixing frame; 2. Roller shutter door body; 3. Fixing assembly; 301. Mounting plate; 302. Rewinding shaft; 303. Positioning bearing; 304. Fixing rod; 4. Suspension assembly; 401. Top frame; 402. Spring; 403. Pawl; 404. Ratchet; 405. Notch; 5. Limiting component; 501. Fixing seat; 502. Threaded rod; 503. Nut; 6. Guide rail; 7. Pulling rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This utility model provides, for example Figure 1-4 The fire truck roller shutter door shown includes:

[0025] Fixture 1;

[0026] Roller shutter door body 2, which is installed on the back of the fixing frame 1;

[0027] Fixing component 3 includes a winding shaft 302 disposed at the top of the roller shutter door body 2, and a fixing member is provided at the connection between the winding shaft 302 and the fixing frame 1;

[0028] The hovering assembly 4 includes a ratchet 404 fixedly connected to one end of the take-up shaft 302. The ratchet 404 has symmetrical notches 405 at its top and bottom. A pawl 403 is provided at the top of the ratchet 404. A spring-loaded part is provided at the top of the pawl 403. A limiting part 5 is provided on one side of the pawl 403.

[0029] A guide rail 6 is provided at the connection between the fixed frame 1 and the roller shutter door body 2. The guide rail 6 is used to limit the movement direction of the roller shutter door body 2.

[0030] A pull rod 7 is provided on the front of the roller shutter door 2, which is used to pull the roller shutter door 2.

[0031] It should be noted that the notch 405 allows the ratchet teeth on the ratchet 404 to remain continuous, thus ensuring that when the pawl 403 moves to the notch 405, it does not contact the ratchet 404; the spring-loaded mechanism is used to reset the pawl 403; the pull rod 7 is fixed to the front of the roller shutter door 2 by a mounting component, and in use, the pull rod 7 moves the roller shutter door 2 to complete the opening and closing steps; when opening the roller shutter door 2, the roller shutter door 2 is moved upwards. The ratchet 404 is rotated by the rewind shaft 302. At this time, the pawl 403 is pushed by the notch 405. The end of the pawl 403 does not contact the ratchet 404. When it is necessary to suspend the bottom of the roller shutter 2 at a certain position, the pawl 403 is first placed at the notch 405, and then the roller shutter 2 is pulled down. Through the action of the spring, the pawl 403 is inserted into the ratchet 404. The ratchet 404 restricts the roller shutter 2 from moving upward, thereby suspending the bottom of the roller shutter 2 at the required height.

[0032] Specifically, the fasteners include a mounting plate 301 that is horizontally and centrally symmetrically fixed to the back of the mounting frame 1. A fixing rod 304 is fixedly connected to one side of the mounting plate 301. A positioning bearing 303 is provided at the connection between the fixing rod 304 and the winding shaft 302. A first through hole is opened in the middle of the ratchet 404, and the fixing rod 304 is inserted into the inside of the first through hole.

[0033] It should be noted that a mounting sleeve is provided on the side of the mounting plate 301 near the fixing rod 304. The end of the fixing rod 304 is inserted into the mounting sleeve, and the fixing rod 304 is fixed to the mounting sleeve by a pin. In this way, the fixing rod 304 is fixed to one side of the mounting plate 301. The positioning bearing 303 is a conventional ball bearing. The positioning bearing 303 connects the fixing rod 304 and the winding shaft 302, so that the winding shaft 302 can rotate at the end of the fixing rod 304.

[0034] Specifically, the spring-loaded component includes a top bracket 401 fixedly connected to one side of the mounting plate 301, and a spring 402 for pulling the pawl 403 is provided on the side of the top bracket 401 opposite to the pawl 403.

[0035] It should be noted that the top frame 401 is connected to the mounting plate 301 by welding or bolting. Both the top frame 401 and the pawl 403 have holes for the spring 402 to pass through. In use, the two ends of the spring 402 are inserted into the holes on the top frame 401 and the pawl 403 respectively, and the spring 402 drives one side of the pawl 403 to move to one side of the top frame 401.

[0036] Specifically, the limiting component 5 includes a fixing seat 501 fixedly connected to one side of the mounting plate 301. A threaded rod 502 is threadedly connected to one side of the fixing seat 501. A second through hole is opened at the top of the pawl 403. The threaded rod 502 is inserted into the inside of the second through hole. Nuts 503 are symmetrically arranged on both sides of the pawl 403. The nuts 503 are threadedly sleeved on one side of the threaded rod 502.

[0037] It should be noted that the diameter of the second through hole is 1.2 times the diameter of the threaded rod 502, allowing the top of the pawl 403 to be fitted onto the middle of the threaded rod 502 through the second through hole. This design allows the pawl 403 to rotate around the threaded rod 502. The two nuts 503 are respectively located on both sides of the pawl 403 and are threaded onto the threaded rod 502. This design restricts the pawl 403 between the two nuts 503, preventing the pawl 403 from moving freely on the threaded rod 502.

[0038] Finally, it should be noted that the above description is only 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 fire truck roller shutter door with a hovering mechanism, characterized in that, include: Fixture (1); Roller shutter door body (2), the roller shutter door body (2) is set on the back of the fixing frame (1); The fixing component (3) includes a winding shaft (302) disposed at the top of the roller shutter door body (2), and a fixing member is provided at the connection between the winding shaft (302) and the fixing frame (1); The hovering assembly (4) includes a ratchet (404) fixedly connected to one end of the take-up shaft (302). The ratchet (404) has symmetrical notches (405) at its top and bottom. The ratchet (404) has a pawl (403) at its top, a spring-loaded member at its top, and a limiting member (5) on one side of its side.

2. A fire truck roller shutter door with a hovering mechanism according to claim 1, characterized in that, A guide rail (6) is provided at the connection between the fixing frame (1) and the roller shutter door body (2), and the guide rail (6) is used to limit the movement direction of the roller shutter door body (2).

3. A fire truck roller shutter door with a hovering mechanism according to claim 1, characterized in that, The front of the roller shutter door (2) is provided with a pull rod (7), which is used to pull the roller shutter door (2).

4. A fire truck roller shutter door with a hovering mechanism according to claim 1, characterized in that, The fastener includes a mounting plate (301) that is horizontally and centrally symmetrically fixed to the back of the fixing frame (1). A fixing rod (304) is fixedly connected to one side of the mounting plate (301). A positioning bearing (303) is provided at the connection between the fixing rod (304) and the winding shaft (302).

5. A fire truck roller shutter door with a hovering mechanism according to claim 4, characterized in that, The ratchet (404) has a first through hole in the middle, and the fixing rod (304) is inserted into the inside of the first through hole.

6. A fire truck roller shutter door with a hovering mechanism according to claim 4, characterized in that, The spring-loaded component includes a top frame (401) fixedly connected to one side of the mounting plate (301), and a spring (402) for pulling the pawl (403) is provided on the side of the top frame (401) opposite to the pawl (403).

7. A fire truck roller shutter door with a hovering mechanism according to claim 4, characterized in that, The limiting component (5) includes a fixed base (501) fixedly connected to one side of the mounting plate (301). A threaded rod (502) is threadedly connected to one side of the fixed base (501). A second through hole is opened at the top of the pawl (403). The threaded rod (502) is inserted into the inside of the second through hole. Nuts (503) are symmetrically arranged on both sides of the pawl (403). The nuts (503) are threadedly sleeved on one side of the threaded rod (502).

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