Lifting type anti-explosion airtight protective door for explosive welding workshop
The design of the lifting explosion-proof and sealed protective door solves the explosion-proof and airtightness problems of the explosion welding workshop door, achieves safety and sealing during explosion and vacuuming, and ensures construction safety and equipment protection.
Patent Information
- Application Number
- CN202520003734.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2035-01-02
AI Technical Summary
The entrance and exit doors of existing explosive welding workshops are difficult to meet the requirements of explosion resistance and airtightness at the same time, especially when vacuuming, they are prone to air leakage and leakage of harmful gases.
A lifting type explosion-proof airtight protective door is designed, which includes a lifting mechanism, a pressing mechanism, a return mechanism and a locking mechanism to ensure the stability and sealing of the door leaf in different positions. The door leaf is lifted and lowered smoothly and fits tightly through components such as cylinders and springs.
It achieves dual protection of airtightness and safety during the explosion welding process, prevents gas leakage and leakage of harmful substances, and ensures construction safety and equipment protection.
Smart Images
Figure CN223423878U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of anti-explosion closed protective door, specifically relates to a kind of lift type anti-explosion closed protective door for explosive welding workshop. BACKGROUND
[0002] Explosive welding product has been widely applied in many fields such as national defense, aviation, spaceflight, petroleum, chemical industry and machinery manufacturing. However, the harmful effects generated in the process of explosive welding make explosive welding sites all concentrate in remote wild sites such as deep mountain area and abandoned mine site far from town and rural residents. Vacuum explosive welding can effectively solve the influence range of harmful effects such as shock wave, seismic wave and noise generated in explosive welding, realize the essential safety of explosive welding technology application, and make explosive welding product production can be constructed in place with convenient traffic and improve product quality. It can be seen that the construction of vacuum explosive welding workshop is one of effective methods to solve the defects of current explosive welding sites.
[0003] The size specification of explosive welding product determines that the access door of vacuum explosive welding workshop is wider and higher. In order to ensure the anti-explosion and sealing property of explosive welding door during vacuumizing, the access door of explosive welding workshop must meet the particularity of anti-explosion and sealing. CONTENT OF UTILITY MODEL
[0004] In view of the deficiency of prior art, the utility model provides a lift type anti-explosion closed protective door for explosive welding workshop. Under the action of compacting mechanism, door leaf is sealed on wall body, the sealing requirement of vacuumizing operation of explosive welding workshop is ensured, and the problem that the access door of explosive welding workshop must meet the particularity of anti-explosion and sealing in order to ensure the anti-explosion and sealing property of explosive welding door during vacuumizing is solved.
[0005] In order to realize the above purpose, the utility model is realized by the following technical scheme: a lift type anti-explosion closed protective door for explosive welding workshop, including door frame fixedly installed on wall body door hole, door leaf is slidably installed in door frame, lifting mechanism for controlling the lifting of door leaf is arranged on the top of door leaf, door frame includes opening section and closed section, locking mechanism for fixing accidental drop of door leaf is arranged on opening section, compacting mechanism for sealing explosive welding workshop door is arranged on one side of door leaf in closed section, reset mechanism for making door leaf return to plumb state is arranged on the wall body on the other side of door leaf in closed section corresponding to compacting mechanism.
[0006] Preferably, door leaf has a lowest position and a highest position when sliding in door frame, when door leaf is in the highest position, door leaf in plumb state is all in opening section, when door leaf is in the lowest position, door leaf in plumb state is all in closed section.
[0007] Preferably, the pressing mechanism includes a cylinder arranged on one side of the interior of the closed section, and the output end of the cylinder is connected to a push plate, which fits the outer surface of the door leaf.
[0008] Preferably, the return mechanism includes a spring arranged on the inner wall of the closed section, the top of the spring is connected to a fixing plate, and the fixing plate is in contact with the inner surface of the door leaf.
[0009] Preferably, the lifting mechanism includes a fixed rod, a stabilizing pulley, a steel wire rope and a winch. The fixed rod is arranged at the top of the door leaf, one end of the steel wire rope is fixedly connected to the winch, and the other end of the steel wire rope passes around the stabilizing pulley and is fixedly connected to the fixed rod.
[0010] Preferably, the locking mechanism includes a fixing seat arranged in the opening section, an electric push rod is arranged on the fixing seat, and an output end of the electric push rod is connected to a fixing block.
[0011] Preferably, a plurality of guide wheels are provided on both sides of the interior of the door frame, and all the guide wheels can contact the two side surfaces and the outer and inner surfaces of the door leaf during the sliding process of the door leaf.
[0012] Preferably, a groove is provided on the door leaf, a protrusion is provided on the wall corresponding to the groove, a sealing strip is provided in the groove, and sealing plates are provided on both sides of the groove.
[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0014] Under the action of the sealing mechanism, the door leaf is sealed on the door frame to ensure the airtightness requirements of the vacuum operation in the explosion welding workshop.
[0015] When the explosion welding is completed and the pressure in the workshop rises to near atmospheric pressure, the door leaf is acted on by the return mechanism to return the door leaf to a plumb state, so as to facilitate the entry and exit of the explosion welding materials in the explosion welding workshop.
[0016] When the lifting mechanism lifts the door leaf to the highest position, the locking mechanism fixes the door leaf to ensure the safety of the workers.
[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The diagram is a schematic diagram of the opening three-dimensional structure of a lifting type explosion-resistant airtight protective door used in an explosion welding workshop.
[0019] Figure 2 The diagram is a schematic diagram of the closing three-dimensional structure of a lifting type explosion-resistant airtight protective door used in an explosion welding workshop.
[0020] Figure 3A cross-sectional view of a lifting explosion-resistant airtight protective door for an explosive welding workshop Figure 1 .
[0021] Figure 4 A cross-sectional view of a lifting explosion-resistant airtight protective door for an explosive welding workshop Figure 2 .
[0022] Figure 5 A cross-sectional view of a lifting explosion-resistant airtight protective door for an explosive welding workshop Figure 3 .
[0023] Figure 6 This is an enlarged view of point A of a lifting type explosion-proof and sealed protective door used in an explosion welding workshop.
[0024] Figure 7 This is an enlarged view of point B of a lifting type explosion-proof and airtight protective door used in an explosion welding workshop.
[0025] In the figure: 1. Door frame; 11. Opening section; 12. Closing section; 2. Door leaf; 3. Lifting mechanism; 31. Fixing rod; 32. Stabilizing pulley; 33. Wire rope; 34. Winch; 4. Locking mechanism; 41. Fixing seat; 42. Electric push rod; 43. Fixing block; 5. Pressing mechanism; 51. Cylinder; 52. Push plate; 6. Return mechanism; 61. Spring; 62. Fixing plate; 7. Guide wheel; 8. Wall; 9. Door opening. DETAILED DESCRIPTION
[0026] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are intended to illustrate the present invention but are not intended to limit the scope of the present invention. All other embodiments obtained by persons of ordinary skill in the art without creative effort are intended to fall within the scope of protection of the present invention.
[0027] Combine Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The figure shows a liftable explosion-resistant, airtight protective door for explosive welding workshops. It includes a door frame 1 fixedly mounted on a wall 8 and a door opening 9. The door frame 1 is designed to withstand the immense impact of an explosion, ensuring the door's stability and safety. A door leaf 2 is slidably mounted within the door frame 1, enabling opening and closing, effectively blocking shock waves and flying debris in the event of an explosion.
[0028] A lifting mechanism 3 is installed at the top of the door leaf 2 to control the raising and lowering of the door leaf 2, enabling rapid and smooth raising and lowering of the door leaf 2. The door frame 1 includes an opening section 11 and a closing section 12. The opening section 11 is used for opening and closing the door leaf 2, while the closing section 12 provides sealing and protective functions.
[0029] The opening section 11 is provided with a locking mechanism 4 for fixing the door leaf 2 from accidentally falling. After the door leaf 2 is lifted to the specified position, it can firmly fix the door leaf 2 by mechanical or electronic means to ensure that personnel and machinery will not fall accidentally during construction.
[0030] A sealing mechanism 5 for sealing the door of the explosion welding workshop is provided on one side of the door leaf 2 inside the closed section 12. When the door leaf 2 is closed, the sealing mechanism 5 compresses the sealing strip or elastic element to form a tight sealing interface between the door leaf 2 and the wall 8, effectively preventing air leakage during vacuuming before explosion welding and the leakage of harmful gases, smoke and noise generated by the explosion during explosion welding.
[0031] Inside the closed section 12, on the wall 8 on the other side of the door leaf 2, corresponding to the compression mechanism 5, is a return mechanism 6 for returning the door leaf 2 to a plumb position. When the door leaf 2 is to be opened, it is automatically or manually guided back to a plumb position (i.e., vertical). This return mechanism 6 ensures that the door leaf 2 returns to its original position smoothly and without impact during the opening process, reducing operator workload.
[0032] Combine Figure 2 、 Figure 3 and Figure 4 As shown, the door leaf 2 has a lowest position and a highest position when sliding inside the door frame 1. When the door leaf 2 is at the highest position, the door leaf 2 is in a plumb state and is completely in the open section 11. When the door leaf 2 is at the lowest position, the door leaf 2 is in a plumb state and is completely in the closed section 12.
[0033] When the door leaf 2 is in its highest position, it is completely within the opening section 11 and assumes a plumb bob position. In this position, the door leaf 2 not only fully opens the passage to the explosive welding workshop, but also, due to its plumb bob stability, provides a certain degree of protection without interfering with operations within the workshop. The highest position setting ensures that the top edge of the door leaf 2 is flush with or slightly lower than the top of the opening section 11 of the door frame 1. This ensures that the door leaf 2 does not block vision or operating space when opened, while also allowing it to be quickly raised to its highest position when necessary for rapid opening.
[0034] When the door leaf 2 is in the lowest position, the door leaf 2 is also in a plumb state, but at this time the door leaf 2 is completely located in the closed section 12. In this position, the door leaf 2 is tightly matched with the closed section 12 of the wall 8, and the compacting mechanism 5 is used to completely seal the explosion welding workshop. It can not only effectively prevent air leakage during vacuuming before explosion welding and the leakage of shock waves, sparks, harmful gases, etc. generated by the explosion during explosion welding, but also protect personnel and equipment outside the workshop from potential hazards. The lowest position setting ensures that the door leaf 2 can provide maximum protection when closed. After the explosion welding is completed, the door leaf 2 can be pushed back to the plumb state with the assistance of the return mechanism 6 and quickly restored to a stable state.
[0035] The lifting mechanism 3 is responsible for providing the necessary power and control during the process of sliding the door leaf 2 from the highest position to the lowest position, or from the lowest position to the highest position. During this process, the sliding trajectory of the door leaf 2 is precisely calculated and controlled to ensure smooth and uninterrupted movement. At the same time, the locking mechanism 4 is automatically or manually triggered when the door leaf 2 reaches the highest or lowest position, to fix the position of the door leaf 2 and prevent it from accidentally falling off.
[0036] In combination with Figure 2 , Figure 3 , Figure 5 and Figure 7 , the compression mechanism 5 includes a cylinder 51 arranged on one side inside the closed section 12, and the output end of the cylinder 51 is connected with a push plate 52, which is in close contact with the outer surface of the door leaf 2.
[0037] During the explosion welding process, when the door leaf 2 is lowered to the lowest position, the compression mechanism 5 will automatically start. The cylinder 51 pushes the push plate 52 to move towards the door leaf 2 until the push plate 52 is in close contact with the outer surface of the door leaf 2 (and tightly seals the door leaf 2 and the wall 8). At this time, a solid sealing barrier is formed between the door leaf 2 and the closed section 12 of the wall 8, which can effectively prevent air leakage during vacuumization before explosion welding and the outflow of shock waves, sparks, harmful gases and other substances generated during explosion welding.
[0038] In combination with Figure 2 , Figure 3 , Figure 4 and Figure 7 , the return mechanism 6 includes a spring 61 arranged on the wall 8 inside the closed section 12, and the top of the spring 61 is connected with a fixed plate 62, which is in close contact with the inner surface of the door leaf 2.
[0039] When the compression mechanism 5 returns to its original position after the explosion welding is completed, the return mechanism 6 on the door leaf 2 will immediately start. The spring 61 will quickly release its stored energy and push the fixed plate 62 to move towards the door leaf 2. With the movement of the fixed plate 62, the fixed plate 62 will push the inner surface of the door leaf 2 and transfer the pushing force of the spring 61 to the door leaf 2. Under the continuous pushing of the spring 61, the door leaf 2 will gradually return to its initial plumb state, thereby ensuring the sealing and stability of the protective door.
[0040] In combination with Figure 2 , Figure 3 , Figure 4 and Figure 5 , the lifting mechanism 3 includes a fixed rod 31, a stable pulley 32, a steel wire rope 33 and a winch 34, the fixed rod 31 is arranged at the top of the door leaf 2, one end of the steel wire rope 33 is fixedly connected to the winch 34, and the other end of the steel wire rope 33 is fixedly connected to the fixed rod 31 through the stable pulley 32.
[0041] In the working process of the lifting mechanism 3, when the winch 34 starts, the winch 34 will drive the steel wire rope 33 to move on the stable pulley 32. With the movement of the steel wire rope 33, the steel wire rope 33 will gradually tighten or loosen, thereby driving the door leaf 2 to stably rise and fall under the guidance of the fixed rod 31. During the lifting process, the stable pulley 32 ensures that the movement trajectory of the steel wire rope 33 is consistent with the lifting direction of the door leaf 2, thereby ensuring the stability and safety of the lifting process.
[0042] The lifting mechanism 3 can also include some auxiliary components, such as limit switches, safety devices, etc. The limit switch is used to limit the lifting range of the door leaf 2 to prevent it from moving excessively or colliding with other components. The safety device is used to quickly stop the work of the winch 34 in emergency situations to protect the safety of personnel and equipment.
[0043] In combination with Figure 2 , Figure 3 , Figure 4 and Figure 6 , the locking mechanism 4 includes a fixed seat 41 arranged on the opening section 11, and an electric push rod 42 is arranged on the fixed seat 41, and the output end of the electric push rod 42 is connected with a fixed block 43.
[0044] When the door leaf 2 is lifted to the highest position by the lifting mechanism 3, in order to prevent the steel wire rope 33 from being damaged or broken and the door leaf 2 from falling and causing casualties, the opening section 11 is provided with the locking mechanism 4, which receives the control signal through the electric push rod 42 on the fixed seat 41 and starts. Thus, the fixed block 43 is pushed to move towards the door leaf 2, until the fixed block 43 completely fixes the door leaf 2, preventing the falling action of the door leaf 2, achieving the locking effect and ensuring the safety of the operating personnel.
[0045] When the door leaf 2 needs to be sealed and explosion welded in the workshop, the electric push rod 42 receives the control signal again and starts in reverse. Thus, the fixed block 43 is pulled away from the door leaf 2, and at this time the door leaf 2 can be freely lowered by the lifting mechanism 3.
[0046] In combination with Figure 1 , Figure 2 , Figure 3 and Figure 4 , a plurality of guide wheels 7 are arranged on both sides inside the door frame 1, which not only ensures the stability and smoothness of the door leaf 2 during sliding, but also greatly prolongs the service life of the door leaf 2 and the entire protective door system.
[0047] During the sliding motion of the door leaf 2, all guide wheels 7 maintain contact with both side surfaces, as well as the outer and inner surfaces of the door leaf 2. This creates a continuous support and guide path, ensuring that the door leaf 2 remains on track during both lifting and sliding. This not only provides stable support but also ensures the balance and stability of the door leaf 2 during sliding.
[0048] Combine Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the door leaf 2 is provided with a groove, and a protrusion is provided on the wall 8 corresponding to the groove. A sealing strip is installed in the groove, and sealing sheets are installed on both sides of the groove. These sealing strips play a vital role in ensuring a tight seal between the door leaf 2 and the door frame 1, especially the closed section 12. These sealing strips not only improve the sound and heat insulation performance of the protective door, but also greatly enhance its ability to resist explosion shock, providing safer and more reliable protection for personnel and equipment within the workshop.
[0049] The present invention is a preferred specific implementation method, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A lifting type explosion-proof airtight protective door for an explosion welding workshop, comprising a door frame (1) fixedly mounted on a door opening (9) of a wall (8), a door leaf (2) being slidably mounted in the door frame (1), and a lifting mechanism (3) for controlling the raising and lowering of the door leaf (2) being provided on the top of the door leaf (2), characterized in that: The door frame (1) includes an opening section (11) and a closing section (12). The opening section (11) is provided with a locking mechanism (4) for fixing the door leaf (2) in case of accidental descent. A sealing mechanism (5) for sealing the door of an explosion welding workshop is provided on one side of the door leaf (2) inside the closing section (12). A return mechanism (6) for returning the door leaf (2) to a plumb state is provided on the wall (8) on the other side of the door leaf (2) corresponding to the sealing mechanism (5) inside the closing section (12).
2. The lifting type explosion-proof airtight protective door for explosion welding workshop according to claim 1 is characterized in that: The door leaf (2) slides inside the door frame (1) and has a lowest position and a highest position. When the door leaf (2) is in the highest position, the door leaf (2) is in a plumb state and is completely in the open section (11). When the door leaf (2) is in the lowest position, the door leaf (2) is in a plumb state and is completely in the closed section (12).
3. The lifting type explosion-proof airtight protective door for explosion welding workshop according to claim 2 is characterized in that: The pressing mechanism (5) comprises a cylinder (51) arranged on one side inside the closed section (12); an output end of the cylinder (51) is connected to a push plate (52), and the push plate (52) is in contact with the outer surface of the door leaf (2).
4. The lifting type explosion-proof airtight protective door for explosion welding workshop according to claim 2, characterized in that: The return mechanism (6) comprises a spring (61) arranged on the inner wall (8) of the closed section (12), the top of the spring (61) is connected to a fixing plate (62), and the fixing plate (62) is in contact with the inner surface of the door leaf (2).
5. The lifting type explosion-proof airtight protective door for explosion welding workshop according to claim 2, characterized in that: The lifting mechanism (3) includes a fixed rod (31), a stabilizing pulley (32), a steel wire rope (33) and a hoist (34). The fixed rod (31) is arranged on the top of the door leaf (2). One end of the steel wire rope (33) is fixedly connected to the hoist (34), and the other end of the steel wire rope (33) passes around the stabilizing pulley (32) and is fixedly connected to the fixed rod (31).
6. The lifting type explosion-proof airtight protective door for explosion welding workshop according to claim 2, characterized in that: The locking mechanism (4) comprises a fixing seat (41) arranged on the opening section (11), an electric push rod (42) is arranged on the fixing seat (41), and an output end of the electric push rod (42) is connected to a fixing block (43).
7. A lifting type explosion-proof airtight protective door for an explosion welding workshop according to any one of claims 1 to 6, characterized in that: A plurality of guide wheels (7) are provided on both sides of the interior of the door frame (1), and during the sliding process of the door leaf (2), all the guide wheels (7) can contact the two side surfaces of the door leaf (2) and the outer and inner surfaces of the door leaf (2).
8. The lifting type explosion-proof airtight protective door for explosion welding workshop according to claim 7, characterized in that: The door leaf (2) is provided with a groove, a protrusion is provided on the wall (8) corresponding to the groove, a sealing strip is provided in the groove (21), and sealing plates are provided on both sides of the groove.