A subway high place smoke-proof fire valve opening tool

Abstract

The utility model relates to the technical field of equipment maintenance, and specifically discloses a high place smoke-proof fire valve opening valve tool for subway, which comprises a handle support, a double-station shifting block, a reset assembly and a pulling rope, wherein the handle support comprises a support end and a handle end, the support end comprises two opposite support plates, and a gap for installing the reset assembly and the double-station shifting block is left between the two support plates; a rotating shaft is arranged in the gap, and the double-station shifting block is rotatably connected to the rotating shaft; the handle end is provided with a pulling channel, one end of the double-station shifting block is provided with a fixing position, one end of the pulling rope is connected to the fixing position, and the other end of the pulling rope is used for being pulled by a hand after passing through the pulling channel; the reset assembly is connected to the double-station shifting block in a matched mode, and the reset assembly is connected to the handle support through an elastic member. The utility model enables an operator to control the action of the double-station shifting block by pulling the pulling rope on the ground when the tool is used, thereby realizing the opening valve and reset operation of the high place smoke-proof fire valve and completely avoiding the climbing operation.

Description

Technical Field

[0001] This utility model relates to the field of equipment maintenance technology, specifically a tooling for opening a smoke and fire prevention valve at a high-altitude location in a subway. Background Technology

[0002] In fire protection systems of subways and other similar locations, smoke and fire dampers play a crucial role. When these dampers are installed at high locations to meet specifications and based on site conditions, some reach heights of 2-6 meters. Furthermore, some dampers installed at these heights are obstructed by equipment, resulting in insufficient space for maintenance. Therefore, work at height is typically required for inspection, commissioning, and resetting of these dampers.

[0003] Currently, there are two main methods for detecting and resetting high-altitude smoke and fire dampers in China:

[0004] Ladder-based work at height: Using A-frame ladders or straight ladders to inspect and reset smoke and fire dampers. This method requires operators to climb ladders and work at height. Due to the height of the work area, protection is difficult, and there is a high risk of falls, posing a significant safety hazard.

[0005] Maintenance platform work at height: This involves setting up a maintenance platform to inspect and reset smoke and fire dampers. While maintenance platforms offer better stability than ladders, their setup requires significant time and manpower, involves a large workload, and also carries the same risks associated with personnel working at height.

[0006] Furthermore, smoke and fire dampers can be installed horizontally or vertically, and existing testing and reset methods are insufficient to accommodate dampers with different installation configurations. Currently, there are no dedicated tools on the market that can safely and conveniently test, open, and reset smoke and fire dampers. Routine maintenance personnel cannot guarantee safety and convenience when operating with existing tools. Therefore, there is an urgent need to develop a tool with safe and convenient features for testing, opening, and resetting smoke and fire dampers. Utility Model Content

[0007] In order to overcome the problems existing in the prior art, the purpose of this utility model is to provide a tooling for opening a smoke and fire prevention valve at a high place in a subway.

[0008] The technical solution adopted by this utility model to solve its technical problem is: a valve opening tooling for a smoke and fire prevention valve at a high-altitude location in a subway, comprising:

[0009] Handle bracket, dual-position switch, reset assembly, and pull rope;

[0010] The handle bracket includes a bracket end and a handle end. The bracket end includes two opposing support plates, with a gap between the two support plates for installing the reset component and the dual-position lever. A rotating shaft is provided in the gap, and the dual-position lever is rotatably connected to the rotating shaft. The handle end is provided with a traction channel. One end of the dual-position lever is provided with a fixed position. One end of the traction rope is connected to the fixed position, and the other end of the traction rope passes around the traction channel for manual pulling.

[0011] The reset component is connected to the dual-station toggle block, and the reset component is connected to the handle bracket via an elastic element.

[0012] Main working principle: The opening fixture for the smoke and fire prevention valve at high altitude in the subway includes a handle bracket, a dual-position lever, a reset component, and a pull rope. Through the coordinated action of the components, the opening and reset operations of the smoke and fire prevention valve at high altitude in the subway can be performed without climbing.

[0013] The handle bracket serves as the main support for the entire fixture. Its support end consists of two opposing support plates with a specific gap in between. This gap not only provides installation space for the reset assembly and the dual-position lever, but also provides stable axial support for the rotation of the dual-position lever through a built-in rotating shaft. The pull channel at the handle end is the path for the pull rope, allowing operators to remotely control the fixture from the ground using the pull rope.

[0014] When no operation is performed, the reset component is in its initial position under the action of the elastic element, and the dual-position toggle block is also in a relatively stable state. At this time, the fixture does not exert force on the smoke and fire damper.

[0015] When it is necessary to open the smoke and fire damper at a high point in the subway, the operator stands on the ground, engages the double-position lever with the gate of the smoke and fire damper, and pulls the free end of the pull rope after it passes through the pull channel. Since one end of the pull rope is fixed to a fixed position at one end of the double-position lever, the pulling force acts directly on the double-position lever. Under the action of the pulling force, the double-position lever begins to rotate around the pivot in the gap of the handle bracket. During the rotation, the double-position lever selects a suitable position to contact the valve components of the smoke and fire damper, depending on whether the smoke and fire damper is installed horizontally or vertically. As the double-position lever continues to rotate, a force is generated at the contact point with the valve components of the smoke and fire damper, thereby overcoming the internal resistance of the valve and pushing the valve open to achieve the opening or closing operation. At the same time as the double-position lever rotates, since the reset component is connected to the double-position lever, the rotation of the double-position lever will drive the reset component to move. The movement of the reset component compresses or stretches the elastic element connected to it, causing the elastic element to store elastic potential energy.

[0016] After the smoke and fire damper has completed its opening operation, or when a reset operation is required, the operator releases the pull rope. At this point, the force exerted by the pull rope on the dual-position lever disappears. Because the previous movement of the reset assembly stored elastic potential energy in the elastic element, this energy is released after the pull force disappears, generating a spring force opposite to the previous compression or stretching direction. This spring force acts on the reset assembly, pushing it back to its initial position. The movement of the reset assembly, through the connecting structure, causes the dual-position lever to rotate in the opposite direction around its axis, restoring it to its initial position and completing the reset operation.

[0017] Based on the above working principle of valve opening and reset, this high-altitude smoke and fire prevention valve opening tool for subways can be operated safely and conveniently from the ground, avoiding the safety risks caused by operators climbing to heights and improving work efficiency and operational safety.

[0018] Preferably, the dual-station lever is X-shaped, and the four end corners of the dual-station lever are, in sequence, a first support rod, a second support rod, a third support rod, and a fourth support rod, wherein the first support rod is provided with a rotating hole, and the first support rod is rotatably connected to the rotating shaft through the rotating hole.

[0019] Preferably, the second support rod bends toward the third support rod, and a first working position is formed between the second support rod and the third support rod.

[0020] Preferably, the end of the fourth support rod is provided with a second working position, and the opening of the second working position is offset toward the direction of the first support rod.

[0021] Preferably, the fixing position is located on the side of the second support rod facing the third support rod.

[0022] Preferably, the end of the second support rod is provided with a first labor-saving guide wheel, one end of the pull rope is connected to the fixed position, and the other end of the pull rope passes around the first labor-saving guide wheel in sequence, and finally extends out from the pull channel for manual pulling.

[0023] Preferably, the end of the second support rod is also provided with a second labor-saving guide wheel, which is arranged side by side with the first labor-saving guide wheel. A third labor-saving guide wheel is provided on one side of the handle bracket. One end of the pull rope is connected to the fixed position, and the other end of the pull rope passes around the first labor-saving guide wheel, the third labor-saving guide wheel and the second labor-saving guide wheel in sequence, and finally extends out from the pull channel for manual pulling.

[0024] Preferably, the end of the second support rod is also provided with a second labor-saving guide wheel, which is arranged side by side with the first labor-saving guide wheel. A third labor-saving guide wheel is provided on one side of the handle bracket. One end of the pull rope is connected to the fixed position, and the other end of the pull rope passes around the first labor-saving guide wheel, the third labor-saving guide wheel and the second labor-saving guide wheel in sequence, and finally extends out from the pull channel for manual pulling.

[0025] Preferably, the reset assembly is provided with a sliding groove along the extension direction of the elastic member, and guide holes are provided on both sides of the gap. An external guide rod passes through the guide holes on both sides and the sliding groove. During the movement of the reset assembly, the sliding groove moves in a straight line under the limitation of the guide rod.

[0026] Preferably, the device also includes two pads, which clamp the dual-station lever and are respectively fixedly connected to the two support plates.

[0027] Compared with the prior art, the beneficial effects of this utility model are:

[0028] This utility model, by setting up a handle bracket, a dual-position lever, a reset component, and a pull rope, compared to traditional methods for detecting and resetting smoke and fire dampers at heights, such as using ladders or maintenance platforms, allows operators to control the movement of the dual-position lever by pulling the pull rope from the ground. This enables the opening and resetting of the smoke and fire damper at heights, completely avoiding the need for climbing and fundamentally eliminating the risk of falls from heights, thus greatly improving operational safety.

[0029] In some subway environments, there may be hazardous factors such as electrical wiring and complex equipment at heights. When operators work at heights, they need to come into close contact with these hazardous areas, increasing the possibility of accidents such as electric shock and collisions. This tooling allows operators to work on the ground, away from hazardous areas at heights, reducing contact with hazardous factors on site, and further ensuring the personal safety of operators.

[0030] Meanwhile, the structural design of this tooling is simple and straightforward. Operators only need to pull the tow rope from the ground to complete the valve opening and resetting operations, without the need for complicated training or learning. In contrast, traditional methods of working at heights not only require operators to have certain climbing skills and safety knowledge, but also present significant challenges when performing delicate operations at heights, demanding a high level of technical expertise from the operators. The simple operation of this tooling lowers the operational threshold and improves work efficiency.

[0031] Because smoke and fire dampers can be installed horizontally or vertically, traditional testing and reset tools are often ill-suited to this difference, requiring different tools or complex adjustments for each installation method. However, this fixture's dual-position lever allows for selection of the appropriate position based on the actual installation of the smoke and fire damper, enabling both opening and resetting operations without the need for tool changes or cumbersome adjustments. This significantly improves the fixture's versatility and ease of operation. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the overall fixture for opening smoke and fire dampers at high altitudes in the subway station.

[0034] Figure 2 This is a front view of the tooling for opening smoke and fire dampers at high altitudes in the subway station.

[0035] Figure 3 This is a side view of the tooling for opening smoke and fire dampers at high altitudes in the subway station.

[0036] Figure 4 A schematic diagram of the explosion of the smoke and fire damper opening device at a high point in the subway.

[0037] Figure 5 This is a schematic diagram of a dual-station toggle block;

[0038] 1. Handle bracket; 10. Bracket end; 100. Support plate; 101. Gap; 102. Guide hole; 11. Handle end; 110. Pulling channel; 111. Third labor-saving guide wheel; 3. Dual-station lever; 30. Fixed position; 31. First support rod; 310. Gear tooth; 32. Second support rod; 33. Third support rod; 34. Fourth support rod; 35. Rotary hole; 36. First station; 37. Second station; 38. First labor-saving guide wheel; 39. Second labor-saving guide wheel; 4. Reset assembly; 40. Elastic element; 41. Rack; 42. Slide groove; 5. Pulling rope; 6. Pad plate. Detailed Implementation

[0039] To better understand the above-mentioned objectives, features, and advantages of this utility model, it will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this utility model; the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0041] Example 1

[0042] This embodiment discloses a tooling for opening a smoke and fire prevention valve at a high location in a subway station, such as... Figures 1-5 It includes a handle bracket 1, a dual-position lever 3, a reset component 4, and a pull rope 5. Through the coordinated action of the components, the opening and resetting operations of the smoke and fire prevention valves at high altitudes in the subway can be performed without climbing.

[0043] The handle bracket 1 serves as the main support for the entire fixture. Its bracket end 10 consists of two opposing support plates 100 with a specific gap 101 in between. This gap 101 not only provides installation space for the reset assembly 4 and the dual-position lever 3, but also provides stable axial support for the rotation of the dual-position lever 3 through a built-in rotating shaft. The pull channel 110 provided on the handle end 11 is the passageway for the pull rope 5, allowing the operator to remotely control the fixture from the ground via the pull rope 5.

[0044] When no operation is performed, the reset component 4 is in the initial position under the action of the elastic element 40, and the dual-position toggle block 3 is also in a relatively stable state. At this time, the tooling does not exert force on the smoke and fire damper.

[0045] When it is necessary to open the smoke and fire damper at a high point in the subway, the operator stands on the ground, engages the double-position lever 3 with the gate of the smoke and fire damper, and pulls the free end of the pull rope 5 after it passes through the pull channel 110. Since one end of the pull rope 5 is fixed to the fixed position 30 at one end of the double-position lever 3, the pulling force will directly act on the double-position lever 3. Under the action of the pulling force, the double-position lever 3 begins to rotate around the pivot in the gap 101 of the handle bracket 1. During the rotation, the double-position lever 3 will select a suitable position to contact the valve components of the smoke and fire damper, depending on whether the smoke and fire damper is in a horizontal or vertical position. As the double-position lever 3 continues to rotate, the contact point between it and the valve components of the smoke and fire damper will generate a force, thereby overcoming the internal resistance of the valve and pushing the valve open to realize the opening or closing operation. As the dual-station toggle block 3 rotates, the rotation of the dual-station toggle block 3, due to its connection with the reset assembly 4, causes the reset assembly 4 to move. This movement of the reset assembly 4 compresses or stretches the elastic element 40 connected to it, allowing the elastic element 40 to store elastic potential energy.

[0046] After the smoke and fire damper has completed its opening operation, or when a reset operation is required, the operator releases the pull rope 5. At this time, the force exerted by the pull rope 5 on the dual-position lever 3 disappears. Because the previous movement of the reset assembly 4 caused the elastic element 40 to store elastic potential energy, the elastic element 40 releases this potential energy after the pulling force disappears, generating a spring force opposite to the previous compression or stretching direction. This spring force acts on the reset assembly 4, pushing it to move back to its initial position. The movement of the reset assembly 4, through the connecting structure, causes the dual-position lever 3 to rotate in the opposite direction around its axis, restoring the dual-position lever 3 to its initial position and completing the reset operation.

[0047] Based on the above working principle of valve opening and reset, this high-altitude smoke and fire prevention valve opening tool for subways can be operated safely and conveniently from the ground, avoiding the safety risks caused by operators climbing to heights and improving work efficiency and operational safety.

[0048] In some optional embodiments, the dual-position lever 3 is X-shaped, with its four end corners being a first support rod 31, a second support rod 32, a third support rod 33, and a fourth support rod 34, respectively. The rotating hole 35 of the first support rod 31 engages with a rotating shaft, allowing the dual-position lever 3 to rotate around the shaft. This structure provides a basis for the rotation of the dual-position lever 3, facilitating subsequent cooperation with other components to achieve valve opening and reset operations. When subjected to the pulling force of the pull rope 5, the dual-position lever 3 rotates around the rotating hole 35 of the first support rod 31 as its axis. Through the interaction between the different support rods and the valve components of the smoke and fire damper, the valve opening and reset functions are achieved.

[0049] In some optional embodiments, the second support rod 32 bends toward the third support rod 33, forming a first working position 36 between the second support rod 32 and the third support rod 33. When the smoke and fire damper is horizontally mounted, during the rotation of the double-position lever 3, the first working position 36 can interact with the valve's opening rod. The rotation of the double-position lever 3 drives the valve components to move, overcoming the internal resistance of the valve and realizing the opening of the valve.

[0050] In some optional embodiments, the end of the fourth support rod 34 is provided with a second station 37, and the opening of the second station 37 is offset toward the first support rod 31. When the smoke and fire damper is installed vertically, when the double-station toggle block 3 rotates, the second station 37 can match and contact the valve opening mechanism. As the double-station toggle block 3 rotates, it applies a force to the valve components, pushing the valve to open.

[0051] In some optional embodiments, the fixing position 30 is located on the side of the second support rod 32 facing the third support rod 33, providing a stable connection point for the pull rope 5. When the operator pulls the pull rope 5, the pulling force acts directly on the double-position lever 3 through the fixing position 30, enabling the double-position lever 3 to rotate around the pivot, thus realizing the valve opening and reset operations. At the same time, this arrangement also facilitates a more rational layout of the tooling structure, making the overall design more compact.

[0052] In some optional embodiments, a first labor-saving guide wheel 38 is provided at the end of the second support rod 32. One end of the pull rope 5 is connected to the fixed position 30, and the other end extends out of the pull channel 110 after passing over the first labor-saving guide wheel 38. When the operator pulls the pull rope 5, the first labor-saving guide wheel 38 changes the direction of force on the pull rope 5, reducing the friction between the pull rope 5 and the dual-position lever 3. This allows the operator to pull the pull rope 5 with less force, thereby enabling the dual-position lever 3 to obtain sufficient rotational power, thus achieving labor-saving operation.

[0053] In some optional embodiments, a first labor-saving guide wheel 38 and a second labor-saving guide wheel 39 are arranged side by side at the end of the second support rod 32, and a third labor-saving guide wheel 111 is provided on one side of the handle bracket 1. The pull rope 5 passes sequentially around the first labor-saving guide wheel 38, the third labor-saving guide wheel 111, and the second labor-saving guide wheel 39 before extending out from the pull channel 110. The combination of multiple labor-saving guide wheels further changes the direction and path of the force on the pull rope 5, disperses the pulling force, and reduces the friction at each contact point. When the operator pulls the pull rope 5, the dual-position lever 3 can be rotated with less force through the synergistic effect of multiple guide wheels, greatly improving the labor-saving effect of operation.

[0054] In some optional embodiments, the first support rod 31 is provided with gear teeth 310 at its end, and the reset assembly 4 is provided with a rack 41 on one side, with the gear teeth 310 and the rack 41 meshing with each other. When the dual-position shift block 3 rotates around the pivot, the gear teeth 310 of the first support rod 31 will drive the rack 41 to move, thereby causing the reset assembly 4 to move accordingly. During the reset process, when the elastic element 40 pushes the reset assembly 4 to move, the rack 41 will drive the gear teeth 310 to rotate, causing the dual-position shift block 3 to rotate in the opposite direction and return to its initial position. This meshing transmission method of the gear teeth 310 and the rack 41 ensures the accuracy and stability of the transmission between the dual-position shift block 3 and the reset assembly 4.

[0055] In some optional embodiments, the reset assembly 4 is provided with a groove 42 along the extending direction of the elastic member 40, and guide holes 102 are provided on both sides of the gap 101. An external guide rod passes through the guide holes 102 and the groove 42. When the reset assembly 4 moves under the action of the elastic member 40, the groove 42 can only move in a straight line under the limiting action of the guide rod. This ensures that the reset assembly 4 will not deviate during movement, ensuring that the dual-station toggle block 3 can accurately return to its initial position, thus improving the stability and reliability of the tooling.

[0056] In some optional embodiments, two pads 6 clamp the dual-position lever 3 and are fixedly connected to two support plates 100 respectively. The clamping action of the pads 6 can prevent the dual-position lever 3 from shaking or shifting during rotation, ensuring that the dual-position lever 3 can rotate accurately around the axis and make stable contact with the valve components of the smoke and fire damper, thereby improving the accuracy and reliability of valve opening and resetting operations. At the same time, the fixed connection between the pads 6 and the support plates 100 also enhances the structural strength of the entire tooling.

[0057] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A tooling for opening a smoke and fire damper at a high location in a subway station, characterized in that, include: Handle bracket, dual-position switch, reset assembly, and pull rope; The handle bracket includes a bracket end and a handle end. The bracket end includes two opposing support plates, with a gap between the two support plates for installing the reset component and the dual-position lever. A rotating shaft is provided in the gap, and the dual-position lever is rotatably connected to the rotating shaft. The handle end is provided with a traction channel. One end of the dual-position lever is provided with a fixed position. One end of the traction rope is connected to the fixed position, and the other end of the traction rope passes around the traction channel for manual pulling. The reset component is connected to the dual-station toggle block, and the reset component is connected to the handle bracket via an elastic element.

2. The opening fixture for the smoke and fire prevention valve at high-altitude locations in the subway according to claim 1, characterized in that, The dual-station lever is X-shaped, and its four end corners are respectively a first support rod, a second support rod, a third support rod, and a fourth support rod. The first support rod is provided with a rotating hole, and the first support rod is rotatably connected to the rotating shaft through the rotating hole.

3. The valve opening fixture for a smoke and fire prevention valve at a high location in a subway station according to claim 2, characterized in that, The second support rod bends toward the third support rod, and a first working position is formed between the second support rod and the third support rod.

4. The valve opening fixture for a smoke and fire prevention valve at a high altitude in a subway station according to claim 2, characterized in that, The fourth support rod has a second working position at its end, and the opening of the second working position is offset toward the first support rod.

5. The valve opening fixture for a smoke and fire prevention damper at a high location in a subway station according to claim 2, characterized in that, The fixing position is located on the side of the second support rod facing the third support rod.

6. The opening fixture for the smoke and fire prevention valve at high-altitude locations in the subway according to claim 2, characterized in that, The end of the second support rod is provided with a first labor-saving guide wheel. One end of the pull rope is connected to the fixed position, and the other end of the pull rope passes around the first labor-saving guide wheel in sequence, and finally extends out from the pull channel for manual pulling.

7. The valve opening fixture for a smoke and fire prevention valve at a high location in a subway station according to claim 6, characterized in that, The end of the second support rod is also provided with a second labor-saving guide wheel, which is arranged side by side with the first labor-saving guide wheel. A third labor-saving guide wheel is provided on one side of the handle bracket. One end of the pull rope is connected to the fixed position, and the other end of the pull rope passes around the first labor-saving guide wheel, the third labor-saving guide wheel and the second labor-saving guide wheel in sequence, and finally extends out from the pull channel for manual pulling.

8. The opening fixture for the smoke and fire prevention valve at high-altitude locations in the subway according to claim 2, characterized in that, The end of the first support rod is provided with gear teeth, and one side of the reset assembly is provided with a rack, the gear teeth and the rack meshing with each other.

9. The valve opening fixture for a smoke and fire prevention damper at a high altitude in a subway station according to claim 2, characterized in that, The reset assembly is provided with a sliding groove along the extension direction of the elastic element, and guide holes are provided on both sides of the gap. An external guide rod passes through the guide holes on both sides and the sliding groove. During the movement of the reset assembly, the sliding groove moves in a straight line under the limitation of the guide rod.

10. The valve opening fixture for a smoke and fire prevention damper at a high altitude in a subway station according to claim 1, characterized in that, It also includes pads, two of which clamp the dual-station lever, and the two pads are respectively fixedly connected to the two support plates.

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