Horizontal opening type personnel access device

Abstract

The invention relates to the technical field of personnel access devices, and discloses a horizontal opening type personnel access device. The fireproof curtain comprises an outer frame and steel rails fixed to the two sides, the top of the outer frame is rotationally connected with a rotating shaft, the rotating shaft is fixedly sleeved with an energy accumulator and connected with a fireproof curtain piece in a winding mode, and the two sides of the fireproof curtain piece are slidably embedded into the steel rails. Second magnetic pieces are fixed to the bottom ends of the fireproof curtain pieces, and first magnetic pieces are correspondingly arranged at the bottom of the outer frame. During closing, the magnetic strips attract each other to overcome spring torsion to keep the curtain sheets tensioned; after the magnetic strips are separated, the energy accumulator releases energy storage torque to drive the rotating shaft to rotate reversely, and mechanical automatic rapid winding of the fireproof curtain pieces is achieved. A magnetic attraction fixing and mechanical resetting structure is matched, a channel can still be rapidly opened under the power failure condition, the problems that in the prior art, escape is difficult, and the sealing performance is poor are solved, and the safety and the sealing effect of the spraying room are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of personnel access devices, and more particularly to a horizontally opening personnel access device. Background Technology

[0002] Traditional hinged doors occupy a large space and struggle to maintain a consistent seal during frequent entry and exit, easily leading to paint mist leakage or external dust intrusion. While electric roller shutters offer a high degree of automation, their complex structure, high cost, and heavy reliance on electricity make them vulnerable. In high-risk environments like painting operations, where flammable and explosive materials are present, electric roller shutters often fail to open quickly in the event of a power outage or electrical malfunction, severely hindering emergency escape and posing a significant safety hazard. Furthermore, while some manual roller shutters address the power outage issue, they lack an automatic reset mechanism, requiring manual operation for each entry and exit, resulting in low efficiency and a risk of leaks due to improper operation.

[0003] Therefore, this invention proposes a horizontally opening personnel access device to address the shortcomings of existing technologies. Summary of the Invention

[0004] In view of the problems in the prior art, such as the inability of horizontally opening personnel access devices to quickly open for escape in emergency situations such as power outages, the high cost and dependence on power supply for electric structures, and the cumbersome operation of traditional manual doors and the difficulty in achieving both automatic reset and sealing, the present invention aims to provide a horizontally opening personnel access device with an improved structure that can effectively solve the above problems.

[0005] The present invention provides a horizontally opening personnel access device, comprising: an outer frame, a steel track, a rotating shaft, an energy storage device, a fireproof curtain, a first magnetic component, and a second magnetic component.

[0006] The outer frame has a vertical portal frame structure. The rotating shaft is horizontally connected to the inner side of the crossbeam at the top of the outer frame via a bearing assembly, and both ends of the rotating shaft extend above the steel rails on both sides. The accumulator is coaxially sleeved on the outer side of the end of the rotating shaft. The inner end of the accumulator is fixedly connected to the outer circumference of the rotating shaft, and the outer end of the accumulator is fixedly connected to the inner wall of the outer frame or a fixed bracket on the outer frame. When the rotating shaft rotates to unfold the fireproof curtain, it can drive the accumulator to generate a torsional elastic force for reverse reset.

[0007] Furthermore, the top of the fireproof curtain is fixedly connected to the outer circumference of the rotating shaft along its width. The two side edges of the fireproof curtain are slidably embedded in the internal guide spaces of the steel tracks on both sides. As the rotating shaft rotates, the fireproof curtain can be vertically rolled up or released along the path of the steel tracks. A second magnetic component is fixedly connected to the bottom edge of the fireproof curtain, and a first magnetic component is fixedly connected to the transverse connecting piece at the bottom of the outer frame, with its position corresponding vertically to the second magnetic component. When the fireproof curtain is in its extended and closed state, the second magnetic component and the first magnetic component maintain a magnetic attraction connection, and the accumulator is in an energy storage state.

[0008] Preferably, the steel track has a U-shaped groove structure in cross-section, with the opening of the U-shaped groove structure facing the inner center of the outer frame. The side edge of the fireproof curtain extends into the groove of the steel track and slides in contact with the inner surface of the groove wall. This U-shaped guide structure can effectively constrain the path of the curtain, improve the smoothness of operation and the edge sealing performance.

[0009] Preferably, the bottom edge of the fireproof curtain is wrapped and sewn with a weighted bottom rod. The second magnetic component is fixedly installed on the bottom surface of the weighted bottom rod by an embedding process, and the length of the weighted bottom rod extends into the interior of the steel tracks on both sides. The weighted bottom rod uses gravity to help the curtain be vertically tightened, preventing it from swaying and enhancing the bottom sealing fit.

[0010] Preferably, an operating handle is fixedly installed on the side of the weighted base rod facing away from the interior of the spray booth, and the operating handle protrudes from the surface of the fireproof curtain. This design allows operators to quickly separate the magnetic structure by applying external force when entering or exiting the booth or in an emergency, thus achieving rapid opening.

[0011] Preferably, the top outer side of the outer frame is fixedly covered with a protective shell. The rotating shaft, the accumulator, and the rolled-up fireproof curtain are all housed within the internal cavity of the protective shell. A strip-shaped through-hole is provided at the bottom of the protective shell for the fireproof curtain to pass through. The protective shell serves to prevent dust and paint mist deposition, effectively protecting the internal mechanical components and extending their service life.

[0012] Preferably, the first magnetic component is embedded in the ground threshold at the bottom of the outer frame, with the upper surface of the first magnetic component and the upper surface of the ground threshold at the same level. This flush design eliminates ground obstacles, facilitates personnel passage and equipment handling, and ensures tight adhesion at the bottom.

[0013] Preferably, the accumulator is a planar spiral spring made of high-strength spring steel, and the outer end of the accumulator is fixedly locked to the inner wall of the outer frame by bolts. Using a planar spiral spring provides a stable and durable torque output, ensuring reliable reset function for long-term use.

[0014] Preferably, the fireproof curtain has a multi-layer composite structure, including a middle fireproof fiber layer and an antistatic coating on both sides. This composite material meets the dual safety standards of fire resistance and flame retardancy, as well as antistatic dust accumulation, required in spray painting workshops.

[0015] Preferably, a limiting block is further provided between the rotating shaft and the steel track, and the limiting block is fixedly installed at the upper opening of the steel track. The limiting block is used to prevent the second magnetic element at the bottom end of the fireproof curtain from being excessively wound into the rotating shaft, preventing structural damage or derailment.

[0016] The present invention has the following beneficial effects:

[0017] 1. In this invention, by setting up a structure that combines a magnetic fixing component with an automatic reset mechanism for an accumulator, the problems of existing parts spraying booth entrance and exit doors being unable to open quickly in the event of a power outage and traditional manual doors being cumbersome to operate and unable to automatically retract are solved. This invention achieves the effect of automatically and quickly retracting the fireproof curtain by simply disrupting the magnetic balance without the need for electric drive, thus realizing energy saving and environmental protection, and significantly improving escape safety in emergency situations.

[0018] 2. In this invention, the structure of limiting and guiding the fireproof curtain on both sides by using steel tracks and fixing it with a bottom weighted rod and magnetic attraction solves the problem that traditional soft curtain doors are easily affected by airflow and have poor sealing when closed. It achieves the technical effect that the fireproof curtain can always remain vertically taut and the edges are tightly fitted to the track when closed, effectively preventing paint mist overflow or external dust intrusion during the spraying operation and ensuring the spraying quality. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the horizontally opening personnel access device proposed in this invention.

[0020] Figure 2 This is a schematic diagram of the fireproof curtain of the horizontally opening personnel access device proposed in this invention.

[0021] Figure 3 This is a schematic diagram of the structure of the first magnetic component of the horizontally opening personnel access device proposed in this invention.

[0022] Figure 4 This is a schematic diagram of the second embodiment of the horizontally opening personnel access device proposed in this invention.

[0023] Legend:

[0024] 1. Outer frame; 2. Steel track; 3. First magnetic component; 4. Rotating shaft; 5. Accumulator; 6. Fireproof curtain; 7. Second magnetic component; 8. Fixing screw; 9. Inner roller; 10. Roller balancer; 11. Outer roller. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention. Detailed Implementation

[0026] Example 1:

[0027] Please refer to Figures 1 to 3 The present invention provides a horizontally opening personnel access device, which aims to solve the problems that existing passage doors cannot simultaneously meet the requirements of sealing and rapid escape when closed, as well as the problems that electric roller shutter doors are expensive and unsafe when power is cut off, and manual doors cannot automatically return to their original position, resulting in fire hazards and inconvenience of operation.

[0028] like Figure 1 and Figure 2 As shown, the main support structure of this horizontally opening personnel access device includes an outer frame 1 and steel tracks 2 symmetrically installed at both ends of the inner side of the outer frame 1. The outer frame 1 has a vertically arranged portal-shaped structure, serving as the mounting base and outline support for the entire device and the access passage. The steel tracks 2 are fixedly connected to the vertical direction of the inner walls on both sides of the outer frame 1 by bolts or welding, and are used to limit and guide the lifting path of the curtain.

[0029] A core drive and winding mechanism is installed on the inner side of the crossbeam at the top of the outer frame 1. This mechanism includes a rotating shaft 4 and an accumulator 5 as a power source. The rotating shaft 4 is horizontally rotatably connected to the inner side of the crossbeam at the top of the outer frame 1 via a bearing assembly. The rotating shaft 4 can rotate freely relative to the outer frame 1, and both ends of the rotating shaft 4 extend above the steel rails 2 on both sides to ensure the flatness of the curtain during winding. The accumulator 5 is a flat spiral spring made of high-strength spring steel, coaxially sleeved on the outer side of the end of the rotating shaft 4 or located on one side of the rotating shaft 4. The inner end of the accumulator 5 is fixedly snapped or welded to the outer circumferential surface or groove of the rotating shaft 4, and the outer end of the accumulator 5 is fixedly connected to the inner wall of the outer frame 1 or a pre-set fixed bracket on the outer frame 1 by bolts. This connection relationship allows the rotating shaft 4 to passively rotate to unfold the curtain, which will drive the accumulator 5 to tighten, thereby generating a reverse restoring torsional elastic force, accumulating potential energy for subsequent automatic winding.

[0030] To achieve the closure and opening of the passage, the device also includes a fireproof curtain 6, a first magnetic component 3, and a second magnetic component 7. The fireproof curtain 6 is made of multi-layered composite fireproof cloth. Its top edge is fixed to the outer circumference of the rotating shaft 4 along its width direction by a pressure strip or screws. The two side edges of the fireproof curtain 6 are slidably embedded in the internal guide spaces of the two steel tracks 2. As the rotating shaft 4 rotates, the fireproof curtain 6 can be vertically rolled up or released along the path of the steel tracks 2. The second magnetic component 7 is fixedly connected to the bottom edge of the fireproof curtain 6. The first magnetic component 3 is fixedly connected to the horizontal connecting piece or ground threshold at the bottom of the outer frame 1 by an embedded structure or screws, and the position of the first magnetic component 3 corresponds vertically to that of the second magnetic component 7. When the fireproof curtain 6 is in a fully extended closed state, the second magnetic component 7 and the first magnetic component 3 maintain a magnetic adsorption connection. The adsorption force between the magnetic strips overcomes the torsional elasticity of the accumulator 5, thereby maintaining the tension and sealing state of the fireproof curtain 6, meeting the environmental sealing requirements of the spraying operation.

[0031] To further optimize the smoothness and sealing of the fireproof curtain slats 6 during lifting and lowering, please refer to the following: Figure 2 The steel track 2 is made of metal profile with a U-shaped groove cross section. The opening of the U-shaped groove structure faces the inner center area of ​​the outer frame 1, thus forming vertical guide grooves on both sides. The two sides of the fireproof curtain 6 extend directly into the U-shaped cavity of the steel track 2 and maintain sliding contact with the inner surface of the groove wall. This embedded sliding contact structure can not only regulate the winding path of the fireproof curtain 6, but also effectively prevent paint mist generated during the spraying operation from overflowing through the side gaps.

[0032] To meet the special safety requirements of the spraying operation environment, the fireproof curtain 6 is made of multi-layer composite material, including fireproof fiber cloth in the middle layer and antistatic coating on both sides, so as to take into account both flame retardant and dustproof and antistatic functions. The bottom edge of the fireproof curtain 6 is wrapped with a weighted bottom rod by sewing or hot pressing. The weighted bottom rod uses its own weight to help the fireproof curtain 6 maintain a vertical and taut state when it is lowered, so as to prevent the curtain from swaying. The length of the two ends of the weighted bottom rod extends into the internal space of the steel track 2 on both sides to prevent the bottom from derailing.

[0033] In conjunction with the structure of the weighted base rod, the second magnetic component 7 is fixedly installed on the bottom surface of the weighted base rod by an embedding process or strong adhesive, and the bottom surface of the second magnetic component 7 is kept flat. An operating handle is fixedly installed on the side of the weighted base rod facing away from the inside of the spray booth by bolts. The operating handle protrudes from the surface of the fireproof curtain 6, making it convenient for on-site personnel to hold the operating handle and apply external force to overcome the magnetic force, thereby separating the second magnetic component 7 and the first magnetic component 3 that are attracted together.

[0034] A protective housing is fixedly installed on the top outer side of the outer frame 1. The protective housing is connected to the outer frame 1 by screws, and completely accommodates the internal rotating shaft 4, accumulator 5 and fireproof curtain 6 in the wound state in the closed cavity formed therein. The bottom of the protective housing is provided with a strip-shaped through hole for the fireproof curtain 6 to pass through vertically, so as to achieve physical isolation and protection of the core winding mechanism.

[0035] Based on the above embodiments, the present invention may further include the following preferred technical solutions:

[0036] In a preferred embodiment, in order to maintain the flatness of the ground in the access passage and reduce the risk of tripping when people enter and exit, the first magnetic component 3 is embedded in the ground threshold set at the bottom of the outer frame 1. The upper surface of the first magnetic component 3 and the upper surface of the ground threshold are at the same level. The first magnetic component 3 and the second magnetic component 7 are seamlessly connected and adsorbed when closed.

[0037] As another preferred embodiment, in order to precisely control the stopping position of the fireproof curtain 6 as it rolls upward and prevent the second magnetic element 7 at the bottom from being over-wound onto the rotating shaft 4 and causing structural damage, a limiting block is provided between the rotating shaft 4 and the steel track 2. The limiting block is fixedly installed at the upper opening of the steel track 2 by bolts or welding. When the fireproof curtain 6 is completely rolled up to the top, the second magnetic element 7 at the bottom of the fireproof curtain 6 will contact the limiting block and stop moving upward, thereby limiting the extreme position of the fireproof curtain 6 as it rolls up.

[0038] As another preferred embodiment, in order to ensure that the winding process of the fireproof curtain 6 has sufficient smoothness and sealing, the groove of the U-shaped groove structure of the steel track 2 is provided with an elastic sealing strip. The elastic sealing strip extends along the length of the groove. When the side edge of the fireproof curtain 6 slides in the groove, the elastic sealing strip can tightly fit the side surface of the fireproof curtain 6 to improve the lateral sealing effect.

[0039] As a preferred material embodiment, the fireproof curtain 6 is made of multi-layer composite fireproof cloth. This structure includes an antistatic coating facing the inside of the building, a high-density fireproof fiber layer in the middle, and a wear-resistant and stain-resistant coating facing the external passage. This composite structure ensures that the curtain has excellent fire resistance, antistatic properties, and durability.

[0040] As a further preferred connection method, the rotating shaft 4 is connected to the inner end of the accumulator 5 through flanges on both sides. The flanges are fixed to the rotating shaft 4 with lock nuts. The outer end of the accumulator 5 is connected to a fixed seat on the inner wall of the outer frame 1. The fixed seat is firmly connected to the outer frame 1 by welding, thereby ensuring the reliability of the connection of the accumulator 5 during multiple energy storage and release processes.

[0041] Example 2:

[0042] In another embodiment of the present invention, the operation method is as follows: pull the fireproof curtain 6 that is slidably connected to the inside of the steel track 2, so that the fireproof curtain 6 is pulled out from the outside of the outer roller 11. Since the edge of the fireproof curtain 6 is fixedly connected to the outside of the outer roller 11 by the fixing screw 8, when the accumulator 5 sleeved on the outside of the inner roller 9 is wound up, it will be restricted by the roller balancer 10 fixedly connected to the inside of the outer roller 11, so that the accumulator 5 can be stopped during the winding or stretching process, thereby making it more convenient and labor-saving to pull or wind up the fireproof curtain 6.

[0043] Working principle: When the building is in operation or not in the entry / exit period, the fireproof curtain 6 is in a fully extended vertical state. The second magnetic component 7 at the bottom is magnetically attracted to the first magnetic component 3 fixed at the bottom of the outer frame 1. The magnetic attraction force overcomes the rebound torque preset by the accumulator 5, so that the fireproof curtain 6 is stably closed at the entrance / exit, effectively isolating the spraying area from the external environment and ensuring operation safety and sealing.

[0044] When personnel need to enter or exit the utility tunnel or need to escape in an emergency, they can pull down or push the second magnetic component 7 to the side to separate it from the first magnetic component 3. At this time, the magnetic attraction constraint that was originally in balance disappears, and the rotating shaft 4 begins to rotate in the opposite direction under the action of the reset torque stored in the accumulator 5.

[0045] As the rotating shaft 4 rotates, the fireproof curtain 6 fixed on it begins to be rapidly rolled up. Its two sides slide smoothly upward along the steel track 2 on the inner side of the outer frame 1 until the fireproof curtain 6 is completely rolled up to the top protective shell area. At this time, the access passage is fully opened, which facilitates the quick and safe passage of personnel.

[0046] When the passage needs to be closed after personnel have passed through, simply pull down the weighted bottom rod at the bottom of the fireproof curtain 6 to drive the rotating shaft 4 to rotate in the forward direction and cause the accumulator 5 to recharge until the second magnetic component 7 is pulled to the bottom and comes into contact with and is attracted to the first magnetic component 3 again, and the fireproof curtain 6 returns to the taut closed state.

[0047] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of protection of the claims.

Claims

1. A horizontally opening personnel access device, comprising an outer frame (1) and steel rails (2) symmetrically installed at both ends of the inner side of the outer frame (1). Its features are, The horizontally opening personnel access device also includes a rotating shaft (4), an energy storage device (5), a fireproof curtain (6), a first magnetic component (3), and a second magnetic component (7). The outer frame (1) has a vertical gate-shaped structure. The rotating shaft (4) is horizontally rotatably connected to the inner side of the crossbeam at the top of the outer frame (1) through a bearing assembly. Both ends of the rotating shaft (4) extend to the upper positions of the steel rails (2) on both sides. The accumulator (5) is coaxially sleeved on the outer side of the end of the rotating shaft (4). The inner end of the accumulator (5) is fixedly connected to the outer circumferential surface of the rotating shaft (4). The outer end of the accumulator (5) is fixedly connected to the inner wall of the outer frame (1) or the fixed bracket on the outer frame (1). When the rotating shaft (4) rotates and unfolds the fireproof curtain (6), it can drive the accumulator (5) to generate a torsional elastic force for reverse reset. The top of the fireproof curtain (6) is fixedly connected to the outer circumference of the rotating shaft (4) along the width direction. The two sides of the fireproof curtain (6) are respectively slidably embedded in the internal guide space of the steel rails (2) on both sides. The fireproof curtain (6) can be rolled up or released vertically along the path of the steel rails (2) as the rotating shaft (4) rotates. The second magnetic component (7) is fixedly connected to the bottom edge of the fireproof curtain (6), and the first magnetic component (3) is fixedly connected to the horizontal connecting piece at the bottom of the outer frame (1) and its position corresponds vertically to the second magnetic component (7). When the fireproof curtain (6) is in the extended and closed state, the second magnetic element (7) and the first magnetic element (3) maintain a magnetic adsorption connection, and the energy storage device (5) is in the energy storage state.

2. The horizontally opening personnel access device according to claim 1, characterized in that, The cross-section of the steel track (2) is a U-shaped groove structure, the opening of the U-shaped groove structure faces the inner center of the outer frame (1), and the side edge of the fireproof curtain (6) extends into the groove of the steel track (2) and slides in contact with the inner surface of the groove wall.

3. The horizontally opening personnel access device according to claim 1, characterized in that, The bottom edge of the fireproof curtain (6) is wrapped with a weighted bottom rod, and the second magnetic component (7) is fixedly installed on the bottom surface of the weighted bottom rod by an embedding process, and the length of the weighted bottom rod extends into the interior of the steel rails (2) on both sides.

4. The horizontally opening personnel access device according to claim 3, characterized in that, An operating handle is fixedly installed on the side of the weighted base bar facing away from the inside of the spray booth. The operating handle protrudes from the surface of the fireproof curtain (6) and is used for the operator to apply external force to separate the first magnetic component (3) from the second magnetic component (7).

5. The horizontally opening personnel access device according to claim 1, characterized in that, The outer frame (1) is fixedly covered with a protective shell on the top outer side. The rotating shaft (4), the accumulator (5) and the rolled-up fireproof curtain (6) are all housed in the internal cavity of the protective shell. The bottom of the protective shell is provided with a strip-shaped through hole for the fireproof curtain (6) to pass through.

6. The horizontally opening personnel access device according to claim 1, characterized in that, The first magnetic component (3) is embedded in the ground threshold at the bottom of the outer frame (1). The upper surface of the first magnetic component (3) is at the same level as the upper surface of the ground threshold to form a flat entry and exit passage surface.

7. The horizontally opening personnel access device according to claim 1, characterized in that, The accumulator (5) is a planar spiral spring made of high-strength spring steel, and the outer end of the accumulator (5) is fixed and locked to the inner wall of the outer frame (1) by bolts.

8. The horizontally opening personnel access device according to claim 1, characterized in that, The fireproof curtain (6) has a multi-layer composite structure, including a middle fireproof fiber layer and an antistatic coating on both sides.

9. The horizontally opening personnel access device according to claim 1, characterized in that, A limiting block is also provided between the rotating shaft (4) and the steel track (2). The limiting block is fixedly installed at the upper opening of the steel track (2) to prevent the second magnetic component (7) at the bottom of the fireproof curtain (6) from being excessively wound into the rotating shaft (4).

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