A subway smoke exhaust fire damper ground testing device

Abstract

The utility model provides a subway smoke exhaust fire valve ground testing device, its characterized in that: tubular cover body 1 is equipped with the cover 2 that can open and shut in top, the tubular cover body 1 pipe orifice upper port is equipped with annular ladder formula rubber ring 4, and the opening inside diameter of annular ladder formula rubber ring 4 is greater than the outer diameter of the pull ring 3 of smoke exhaust fire valve 12, telescopic operating lever 5 is connected with the bottom of tubular cover body 1, operating lever 5 is multi -section nested structure, and the telescopic length is fixed through locking mechanism 6, cover spring mechanism 8 is set up in the outside of tubular cover body 1, when the traction rope 7 is stressed and is drawn, cover spring mechanism 8 extends and makes cover 2 close, when the traction rope 7 is loosened, cover spring mechanism 8 contracts, makes cover 2 and pops open. The utility model can make the detection personnel on the ground convenient, fast to smoke exhaust fire regulating valve manual release function carries out effective, safe test.

Description

Technical fields:

[0001] This utility model applies to the field of fire equipment testing technology, specifically relating to a ground testing device for subway smoke exhaust fire dampers. Background technology:

[0002] Existing subway smoke exhaust fire dampers are typically installed in ventilation ducts more than 3 meters above the ground. Manual testing requires operators to climb to a height using a ladder and pull a rope, posing a risk of falling from a height. While climbing testing mechanisms can perform functional testing, they do not solve the problem of ground operation. Traditional manual operation cannot guarantee the safety of the test. Summary of the Invention:

[0003] This utility model discloses a ground testing device for a subway smoke exhaust fire damper, characterized in that: a tubular covered body 1 has an openable cover 2 at the top, and an annular stepped rubber ring 4 is provided at the upper end of the tubular covered body 1, with the inner diameter of the opening of the annular stepped rubber ring 4 being larger than the outer diameter of the pulling ring 3 of the smoke exhaust fire damper operating mechanism 12; a telescopic operating rod 5 is connected to the bottom of the tubular covered body 1, and the telescopic operating rod 5 has a multi-section nested structure, with the telescopic length fixed by a locking mechanism 6; a cover spring mechanism 8 is disposed outside the tubular covered body 1, and when the eyelet 14 connected to the bottom of the cover 2 and the traction rope 7 passing through the upper and lower openings of the tubular covered body 1 are pulled, the cover spring mechanism 8 rotates and extends around the pivot 15, the cover 2 closes, and after the traction rope 7 is released, the cover 2 returns to its original position and springs open under the contraction force of the cover spring mechanism 8. This utility model utilizes a system consisting of a tubular covered body 1, a retractable operating rod 5, and a cover spring mechanism 8 to achieve a ground-based simulated fire damper release test, thus addressing safety hazards associated with high-altitude operations. The inner diameter of the opening of the annular stepped rubber ring 4 is larger than the outer diameter of the pull ring 3 of the smoke exhaust fire damper operating mechanism 12. When the cover 2 is open, this facilitates the pull ring 3 of the smoke exhaust fire damper operating mechanism 12 fitting into the tubular covered body 1. The closing of the cover 2 prevents the pull ring 3 of the smoke exhaust fire damper from detaching.

[0004] A ground testing device for a subway smoke exhaust fire damper is characterized in that: the annular stepped rubber ring 4 and the matching stepped rubber ring 9 on the edge of the cover 2 form a double-layer anti-slip structure. The annular stepped rubber ring 4 and the matching stepped rubber ring 9 anti-slip structure at the pipe opening ensures that after the smoke exhaust fire damper pull ring 3 and pull rope 11 are inserted into the tubular covered body 1, when the pull rope 7 is pulled, the cover spring mechanism 8 rotates and extends around the pivot 15 to close the cover 2. The matching double-layer anti-slip structure prevents the pull ring 3 from detaching from the testing device under tension.

[0005] A ground testing device for a subway smoke exhaust fire damper is characterized in that: the end of the retractable operating rod 5 is provided with a non-slip grip 10, and the locking mechanism 6 is a threaded tightening structure. The threaded tightening structure of the locking mechanism 6 allows for proper positioning of the length of the retractable operating rod 5. The rod with the non-slip grip 10 is easier to operate.

[0006] The working principle of the ground testing device for a subway smoke exhaust fire damper is as follows: Adjust the telescopic operating rod 5 to a suitable length and lock the rod length through the locking mechanism 6. Insert the pull ring 3 and pull rope 11 of the smoke exhaust fire damper operating mechanism 12 from the top of the tubular covered body 1 to a certain depth, so that the pull rope 11 is on the side of the annular stepped rubber ring 4. Apply vertical pulling force through the traction rope 7 to pull down the cover 2 and press the pull rope 11. The annular stepped rubber ring 4 and the matching stepped rubber ring 9 together press the pull rope 11 tightly. When the traction rope 7 is pulled further, the manual release function test of the smoke exhaust fire damper 12 can be achieved. After the test is completed, release the traction rope 7, the cover spring mechanism 8 automatically resets and opens the cover 2, and the pull rope 11 and pull ring 3 can be removed from the tubular covered body 1.

[0007] Beneficial effects: Safety: Eliminates the risks associated with working at heights above 3 meters. Efficiency: Reduces single-test time to within 2 minutes. Reliability: The anti-slip design of the stepped rubber rings increases the locking force of the traction ring by more than 40%.

[0008] This invention enables testing personnel to conveniently and quickly conduct effective and safe testing of the manual release function of smoke exhaust and fire prevention regulating valves on the ground. Attached image description:

[0009] Figure 1 Schematic diagram of device structure and operating object

[0010] Figure 2 Schematic diagram of the stepped rubber ring structure at the upper part of the main body

[0011] Figure 3 : Device operation diagram Detailed implementation method:

[0012] Example 1:

[0013] See Figure 1 , Figure 2 and Figure 3The system comprises: a tubular covered body 1 with an openable cover 2 at the top; an annular stepped rubber ring 4 at the upper end of the tubular covered body 1, wherein the inner diameter of the opening of the annular stepped rubber ring 4 is larger than the outer diameter of the pull ring 3 of the smoke exhaust fire damper operating mechanism 12; a telescopic operating rod 5 connected to the bottom of the tubular covered body 1, the telescopic operating rod 5 having a multi-section nested structure, and the telescopic length fixed by a locking mechanism 6; and a cover spring mechanism 8 located outside the tubular covered body 1. When the eyelet 14 connected to the bottom of the cover 2 and the pull ring 13 of the traction rope 7 passing through the upper and lower openings of the tubular covered body 1 are pulled downwards, the cover spring mechanism 8 rotates and extends around the pivot 15, closing the cover 2. After the traction rope 7 is released, the cover 2 automatically returns to its original position and springs open under the contraction force of the cover spring mechanism 8. The tubular covered body 1, cover 2, telescopic operating rod 5, and locking mechanism 6 are made of aluminum alloy, while the cover spring mechanism 8 is made of stainless steel. The annular stepped rubber ring 4 and the mating stepped rubber ring 9 are made of wear-resistant materials such as styrene-butadiene rubber. The telescopic operating rod 5 is a three-section nested aluminum alloy rod (single section length 500mm), with a total length of 1.5-2.5m adjustable and lockable. The anti-slip grip 10 at the end of the rod is made of silicone, and the locking mechanism is a threaded tightening type (tightening torque 3-5N·m). The base 16 of the cover spring mechanism 8 is screwed to the tubular cover body 1; the spring lug 17 is screwed to the tubular cover body 1. The rotating shaft 15 of the cover spring mechanism 8 is supported by bearings for rotation.

Claims

1. A ground testing device for subway smoke exhaust fire dampers, characterized in that: The tubular body with a cover (1) has an openable cover (2) on top. The upper end of the tubular body with a cover (1) is provided with an annular stepped rubber ring (4), and the inner diameter of the opening of the annular stepped rubber ring (4) is larger than the outer diameter of the pull ring (3) of the smoke exhaust fire damper operating mechanism (12). The telescopic operating rod (5) is connected to the bottom of the tubular body with a cover (1). The telescopic operating rod (5) is a multi-section nested structure, and the telescopic length is fixed by a locking mechanism (6). The cover spring mechanism (8) is located outside the tubular cover body (1). When the eyelet (14) connected to the bottom of the cover body (2) and the traction rope (7) passing through the upper and lower openings of the tubular cover body (1) are pulled, the cover spring mechanism (8) rotates and extends with the pivot (15) as the fulcrum, the cover body (2) closes, and after the traction rope (7) is released, the cover body (2) automatically resets and springs open under the contraction force of the cover spring mechanism (8).

2. The ground testing device for subway smoke exhaust fire dampers according to claim 1, characterized in that: The annular stepped rubber ring (4) and the matching stepped rubber ring (9) on the cover (2) form a double-layer anti-slip structure.

3. The ground testing device for subway smoke exhaust fire dampers according to claim 1, characterized in that: The telescopic operating rod (5) is provided with a non-slip grip (10) at its end, and the locking mechanism (6) is a threaded tightening structure.

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