Parallel double-shaft chain storage device of fire-fighting circulating chain ladder for fire-fighting engineering of high-rise building

Abstract

A parallel double-shaft chain storage device of a fire-fighting circulating chain ladder for high-rise building fire-fighting engineering comprises a temporary winding mechanism, a chain storage winding mechanism and a coupling mechanism, the chain storage winding mechanism is selectively coupled with the temporary winding mechanism and comprises a chain storage roller shaft, and the other end of a roller chain is fixed to the chain storage roller shaft and wound on the chain storage roller shaft side by side in a multi-layer stacked mode; and the coupling mechanism is arranged between the chain storage winding and the temporary winding, is selectively in transmission connection with the temporary winding and is used for simulating chain ladder circulation, so that the roller chains which are not connected end to end are circularly arranged between the temporary winding and the chain storage winding. Temporary winding is cooperated with chain storage winding, three modes of lower chain, upper chain and circulating chain are realized, and Z-shaped return chain storage is changed into winding chain storage, so that chain storage is miniaturized, the chain is not easy to block, the operation is safe, and the use is simple.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fire-fighting equipment, in particular to a parallel double-shaft chain storage device of a fire-fighting circulating chain ladder for high-rise building fire-fighting engineering. BACKGROUND

[0002] With the outbreak of fire in buildings, fires in high-rise buildings in large cities spread very quickly due to smoke diffusion, making it impossible to escape along the usual escape route, and there is an urgent need for escape fire ladders to escape from high-rise buildings. The existing circulating chain fire ladder has the following disadvantages: 1) the circulating chain storage device has a complex structure and is prone to chain jamming accidents; 2) the circulating chain cannot be used when it is suspended from the top of the building to the ground, and can only be used when it reaches the ground.

[0003] The existing chain storage device is usually of a folding type, such as using two rows of chain storage wheels in the same plane, with the chain Z-shaped folding back, but if this technology is used on high-rise buildings, a large height and width are required to arrange the two rows of chain storage wheels, and the large-size device arranged on the roof is very unsightly.

[0004] Therefore, there is an urgent need in the art for a chain storage device for a circulating chain fire ladder for high-rise buildings, which can be stored and released, can be used for climbing during the process of suspending the chain to the ground, has a simple structure, and has low maintenance cost, and becomes a key problem that needs to be overcome in the field of high-rise building escape. SUMMARY

[0005] In view of the defects in the prior art, the purpose of the present application is to provide a parallel double-shaft chain storage device of a fire-fighting circulating chain ladder for high-rise building fire-fighting engineering, which solves at least one of the following technical problems: ① simple and small storage structure; ② not prone to chain jamming; ③ requires time to convert to a usable state.

[0006] The purpose of the present application is achieved by a chain storage device for a high-rise building fire-fighting circulating chain ladder, comprising a rack, further comprising

[0007] temporary winding, the temporary winding comprising a temporary roller, one end of the roller chain being fixed to the temporary roller, and the temporary roller being rotatable to wind the roller chain in multiple layers side by side on the temporary roller;

[0008] chain storage winding, the chain storage winding being selectively coupled to the temporary winding, the chain storage winding comprising a chain storage roller, the other end of the roller chain being fixed to the chain storage roller and wound in multiple layers side by side on the chain storage roller;

[0009] The coupling mechanism is arranged in the chain storage winding, and the coupling mechanism is selectively connected to the temporary winding to simulate the chain ladder circulation, so that the open-end roller chain is circularly arranged between the temporary winding and the chain storage winding, and the chain ladder circulation is realized by simultaneously winding and unwinding the chain storage winding and the temporary winding, and the winding and unwinding speed of the chain storage winding is equal to the winding and unwinding speed of the temporary winding.

[0010] Further, the in-out tensioner is further provided, and the in-out tensioner comprises an in-out sprocket, a tensioner one and a tensioner two arranged on the same plane, and the shafts of the in-out sprocket, the tensioner one and the tensioner two form an isosceles triangle, and the in-out tensioner is coaxially connected to the temporary winding and the chain storage winding respectively.

[0011] Further, the chain storage winding comprises a chain storage support fixedly arranged on the roof, and the chain roller shaft is rotatably arranged on the chain storage support, the chain roller shaft is coaxially fixedly provided with a gear ring, the gear ring is in meshing connection with a damping gear, and the rotating shaft of the damping gear is connected to a damping mechanism.

[0012] Further, the chain storage winding further comprises a counterweight sprocket arranged between the chain storage winding and the temporary winding, and the roller chain is folded back into the temporary winding through the meshing counterweight sprocket to form a circulating chain.

[0013] Further, the coupling mechanism comprises a chain storage gear and a temporary gear, the chain storage gear is fixedly arranged on the first roller shaft, the temporary gear is fixedly arranged on the temporary gear, the temporary gear is in meshing connection with the chain storage gear, and the first roller shaft is selectively connected to the chain roller shaft through a shaft coupling.

[0014] Further, the selective transmission connection of the shaft coupling is realized by that the first rotating shaft is coaxially and telescopically provided with a magnetic left shaft coupling, a return spring is arranged between the first rotating shaft and the magnetic left shaft coupling, the end of the return spring is connected to the magnetic left shaft coupling, the magnetic left shaft coupling is connected in an on-off electromagnetic circuit i, and the chain roller shaft is fixedly provided with a permanent magnetic right shaft coupling.

[0015] Further, the anti-pairing chain is further provided, and the anti-pairing chain is arranged in the temporary winding and the chain storage winding respectively, and is used for preventing the roller chain from being wound in a single layer and spirally wound thereon to prevent knotting, and making the winding-in or winding-out position opposite to the circulating plane of the roller chain; the anti-pairing chain comprises a spiral groove segment and a straight-moving pairing segment, the spiral groove segment is provided with a spiral chain groove with a pitch W, the straight-moving pairing segment comprises a threaded rod and a nut sleeve integrally connected coaxially with the spiral groove segment, the nut sleeve is fixed to a rack, and the threaded rod is rotationally matched in the nut sleeve; the pitch of the threaded rod is equal to the pitch W of the spiral chain groove.

[0016] Further, the anti-pairing chain further comprises a coupling groove segment arranged on the temporary roller shaft, the coupling groove segment is integrally connected coaxially with the straight-moving pairing segment, the coupling groove segment is centrally and symmetrically provided with a plurality of sliding grooves, the inner hole of the temporary gear is provided with a plurality of corresponding sliding blocks, and the sliding blocks are slidingly matched in the sliding grooves.

[0017] Further, the chain storage device switches among the down chain mode A, the up chain mode B and the circulating chain mode C; in the down chain mode A, the brake of the chain storage winding is released, the brake of the temporary winding is braked, the coupling mechanism is decoupled, the weight of the counterweight sprocket drives the roller chain to be unwound under the chain storage winding, the chain storage roller shaft rotates slowly, the roller chain is output until the counterweight sprocket is placed on the ground; in the up chain mode B, the brake of the chain storage winding is released, the brake of the temporary winding is braked, the coupling mechanism is decoupled, the chain storage roller shaft is rotated manually through the hand handle to drive the roller chain to be wound on the chain storage roller shaft until the counterweight sprocket is lifted to the top of the building, and the chain storage roller shaft is braked.

[0018] Further, the chain storage device mainly works in the circulating chain mode C, the chain storage winding is coupled to the temporary winding through the coupling mechanism, and the length of the circulating chain ladder between the top of the building and the ground does not change when the roller chain is wound or unwound one turn by the chain storage roller shaft and the temporary roller shaft unwinds or winds the roller chain one turn.

[0019] The parallel double-shaft chain storage device of the fire-fighting circulating chain ladder of the high-rise building fire-fighting engineering realizes the three modes of down chain, up chain and circulating chain by cooperation of the temporary winding 10 and the chain storage winding 20, changes the Z-shaped folding return chain storage into winding chain storage, makes the chain storage small in size, is not easy to be jammed, is safe and simple to operate, can be used as an up-down transport tool in daily life, and has great practical value. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 is a front view of the circulating mode of the parallel double-shaft chain storage device of the fire-fighting circulating chain ladder of the high-rise building fire-fighting engineering according to Embodiment 1 of the present application;

[0021] Figure 2 FIG. 2 is a front view of the down chain mode of the parallel double-shaft chain storage device of the fire-fighting circulating chain ladder of the high-rise building fire-fighting engineering according to Embodiment 1 of the present application;

[0022] Figure 3 FIG. 3 is a front view of the up chain mode of the parallel double-shaft chain storage device of the fire-fighting circulating chain ladder of the high-rise building fire-fighting engineering according to Embodiment 1 of the present application;

[0023] Figure 4 FIG. 4 is an A-A sectional view of the parallel double-shaft chain storage device of the fire-fighting circulating chain ladder of the high-rise building fire-fighting engineering according to Embodiment 1 of the present application; Figure 1

[0024] Figure 5 FIG. 5 is a front sectional view of the chain storage winding 20 of the parallel double-shaft chain storage device of the fire-fighting circulating chain ladder of the high-rise building fire-fighting engineering according to Embodiment 2 of the present application, in which the chain storage roller shaft is located at the left limit position to align the circulating plane N;

[0025] Figure 6 ​Figure 1 is a schematic view of the first loop of chain ladder winding into the chain storage roller shaft for the parallel double shaft chain storage device of the fire-fighting circulating chain ladder of the high-rise building fire-fighting engineering of the present invention, embodiment 1. Figure 5 Figure 2 is a schematic view of the last loop of chain ladder winding into the chain storage roller shaft for the parallel double shaft chain storage device of the fire-fighting circulating chain ladder of the high-rise building fire-fighting engineering of the present invention, embodiment 1.

[0026] Figure 7 Figure 3 is a main cross-sectional view of the chain storage winding 20 with the chain storage roller shaft in the right limit position to align with the circulating plane N for the parallel double shaft chain storage device of the fire-fighting circulating chain ladder of the high-rise building fire-fighting engineering of the present invention, embodiment 1.

[0027] Figure 8 Figure 4 is a schematic view of the first loop of chain ladder winding into the temporary roller shaft 11 for the parallel double shaft chain storage device of the fire-fighting circulating chain ladder of the high-rise building fire-fighting engineering of the present invention, embodiment 1. Figure 6 Figure 5 is a schematic view of the last loop of chain ladder winding into the temporary roller shaft 11 for the parallel double shaft chain storage device of the fire-fighting circulating chain ladder of the high-rise building fire-fighting engineering of the present invention, embodiment 1.

[0028] Figure 9 Figure 6 is a main cross-sectional view of the temporary winding 10 with the temporary roller shaft in the left limit position to align with the circulating plane N for the parallel double shaft chain storage device of the fire-fighting circulating chain ladder of the high-rise building fire-fighting engineering of the present invention, embodiment 1.

[0029] Figure 10 Figure 7 is a main cross-sectional view of the temporary winding 10 with the temporary roller shaft in the right limit position to align with the circulating plane N for the parallel double shaft chain storage device of the fire-fighting circulating chain ladder of the high-rise building fire-fighting engineering of the present invention, embodiment 1. Figure 9 Figure 8 is a schematic view of the first loop of chain ladder winding into the temporary roller shaft 11 for the parallel double shaft chain storage device of the fire-fighting circulating chain ladder of the high-rise building fire-fighting engineering of the present invention, embodiment 1.

[0030] Figure 11 Figure 9 is a schematic view of the last loop of chain ladder winding into the temporary roller shaft 11 for the parallel double shaft chain storage device of the fire-fighting circulating chain ladder of the high-rise building fire-fighting engineering of the present invention, embodiment 1.

[0031] Figure 12 Figure 10 is a schematic view of the first loop of chain ladder winding into the chain storage roller shaft for the parallel double shaft chain storage device of the fire-fighting circulating chain ladder of the high-rise building fire-fighting engineering of the present invention, embodiment 2. Figure 11 Figure 11 is a schematic view of the last loop of chain ladder winding into the chain storage roller shaft for the parallel double shaft chain storage device of the fire-fighting circulating chain ladder of the high-rise building fire-fighting engineering of the present invention, embodiment 2.

[0032] Reference numerals in the above figures:

[0033] 10 temporary winding, 11 temporary roller shaft

[0034] 20 chain storage winding, 21 chain storage roller shaft, 22 chain storage support, 23 gear ring, 24 damping gear, 25 damping mechanism, 27 mode switcher, 28 counterweight chain wheel, 29 brake

[0035] 30 coupling mechanism, 31 chain storage gear, 32 temporary gear, 33 first rotating shaft, 34 coupling shaft, 35 magnetic left coupling shaft, 36 permanent magnetic right coupling shaft, 37 return spring, 38 coupling bearing seat, 39 coupling slide rail

[0036] 40 in-out tension, 41 isosceles triangle, 42 in-out sprocket, 43 tension roller one, 44 tension roller two

[0037] 60 anti-knotting chain, 61 helical groove segment, 62 straight-moving knotting segment, 63 coupling groove segment, 64 helical chain groove, 65 nut sleeve, 66 threaded rod, 67 sliding groove, 68 sliding block DETAILED DESCRIPTION

[0038] The embodiments of the present application will be described in detail below with reference to the accompanying drawings, but are not intended to limit the scope of the present application.

[0039] Embodiment 1

[0040] A parallel double-shaft chain storage device of a fire-fighting circulating chain ladder of a high-rise building fire-fighting engineering, comprising

[0041] Temporary winding 10, the temporary winding 10 comprises a temporary roller 11, one end of the single chain ladder 50 is fixed to the temporary roller 11, and rotating the temporary roller 11 can wind the chain ladder 2 thereon;

[0042] Chain storage winding 20, the chain storage winding 20 is selectively coupled to the temporary winding 10, the chain storage winding comprises a chain storage roller 21, the other end of the single chain ladder 2 is fixed to the chain storage roller 21 and is wound in multiple layers on the chain storage roller 21; the chain storage roller 21 is arranged in parallel and spaced apart from the temporary roller 11;

[0043] Coupling mechanism 30, the coupling mechanism 30 is arranged between the chain storage winding 20 and the temporary winding 10, the coupling mechanism 30 is selectively drivingly connected to the temporary winding 10, and is used for simulating chain ladder circulation; the single chain ladder circulation is realized by that the chain storage winding 20 and the temporary winding 10 simultaneously wind / unwind the chain, and the winding / unwinding speed of the chain storage winding 20 is equal to the winding / unwinding speed of the temporary winding 10.

[0044] The roller chain is preferably a single chain ladder, and an integral roller pin is arranged between the single chain ladders every two meters or so. The integral roller pin further comprises an extension portion extending to the outside of the roller chain, and a through hole is arranged at the end of the extension portion. The extension portion is sleeved with a climbing mechanism, and two steel wire ropes pass through the through hole of the extension portion. Soft rope knots are arranged on the upper and lower sides to fix the upper and lower spacing of adjacent integral roller pins, and the steel wire ropes are integrated with the roller single chain. The circulation driving of the single chain ladder is borne by the roller single chain. The climbing mechanism is a chain comprising a gripping handle and a plurality of foot rings. One end of the chain is connected to the extension portion of the integral roller pin through a sleeve ring, and the other end is provided with a lock buckle. When not in use, the lock buckle is locked on the extension portion of the adjacent integral roller pin below in the direction of the roller single chain. When in use, the lock buckle can be separated from the extension portion by pulling.

[0045] The coupling mechanism 30 comprises a shaft coupling and a transmission box, the transmission box is arranged in the coupling bearing seat 38. The transmission box comprises a storage chain gear 31, a temporary gear 32, the storage chain gear 31 is fixedly arranged on a first rotating shaft 33, the temporary gear 32 is fixedly arranged on a temporary roller shaft 11, an odd number of intermediate gears are externally meshed between the temporary gear 32 and the storage chain gear 31, in the coupling transmission state of the shaft coupling, the winding of the storage chain roller shaft 21 and the unwinding of the temporary roller shaft 11 are realized. The gear external meshing ensures that the angular velocities of the rotation of the storage chain roller shaft and the temporary roller shaft are the same, when the diameters of the storage chain roller shaft and the temporary roller shaft are equal, the winding speed and the unwinding speed are equal.

[0046] The first rotating shaft 33 is selectively transmission connected with the storage chain roller shaft 21 through the shaft coupling 34. The first rotating shaft 33 is rotationally supported in the coupling bearing seat 38, and the coupling bearing seat 38 is fixed to the frame.

[0047] The selective transmission connection of the shaft coupling is realized as follows: the first rotating shaft 33 is coaxially and telescopically provided with a magnetic left shaft coupling 35, a reset spring 37 is arranged between the first rotating shaft 33 and the magnetic left shaft coupling 35, the reset spring 37 is connected to the magnetic left shaft coupling 35 at the end, the magnetic left shaft coupling 35 is connected in a switchable electromagnetic circuit i, a permanent magnetic right shaft coupling 36 is fixedly arranged at the end of the storage chain roller shaft 21, by turning on the circuit, the magnetic left shaft coupling 35 is caused to have a magnetic property opposite to that of the permanent magnetic right shaft coupling 36, and the magnetic left shaft coupling 35 is attracted to the permanent magnetic right shaft coupling 36, so that the first rotating shaft 33 is transmission connected with the storage chain roller shaft 21, at this moment, the rotation of the storage chain roller shaft 21 drives the first roller shaft 33 to rotate, the first roller shaft 33 drives the temporary roller shaft 11 to rotate in the opposite direction through the gear meshing, and the coupling transmission state is realized. The electromagnetic circuit i is turned off, the magnetic left shaft coupling 35 loses the magnetic property, and the reset spring 37 drives the magnetic left shaft coupling 35 to move away from the permanent magnetic right shaft coupling 36, so that the first rotating shaft 33 is disconnected from the transmission connection with the storage chain roller shaft 21, and the transmission decoupling state is realized.

[0048] The storage chain device further comprises an in-out tensioning device 40, the in-out tensioning device 40 comprises an in-out sprocket 42, a tensioning wheel one 43 and a tensioning wheel two 44 arranged on the circulation plane N of the single chain ladder, the shafts of the in-out sprocket 42, the tensioning wheel one 43 and the tensioning wheel two 44 form an isosceles triangle 41. The in-out tensioning device 40 is coaxially connected to the temporary winding 10 and the storage winding 20 respectively.

[0049] The storage winding 20 and the temporary winding 10 are both provided with a brake 29. The storage winding 20 comprises a storage chain support 22 fixedly arranged on the roof, the storage chain roller shaft 21 is rotationally arranged on the storage chain support 22, the storage chain roller shaft 21 is coaxially and fixedly provided with a gear ring 23, the gear ring 23 is meshingly connected with a damping gear 24, and the rotating shaft of the damping gear 24 is connected with a damping mechanism 25. The other end of the storage chain roller shaft 21 is provided with the brake 29. The damping mechanism 25 and the brake 29 are both prior arts.

[0050] The chain storage device switches between the down chain mode A, the up chain mode B and the circulating chain mode C. The chain storage device is provided with a mode switcher which can be manually operated.

[0051] The chain storage winding 20 further comprises a counterweight sprocket 28 arranged between the chain storage roller 21 and the temporary winding 10 for the chain ladder 2 to fold back. The counterweight sprocket 28 comprises a support and a roller, and the sprocket support is provided with a mode switcher 27. The bottom of the support is provided with a circulating mode starting switch. When the counterweight sprocket 28 is placed on the ground, the circulating mode starting switch is automatically triggered to switch the mode switcher to the circulating chain mode, so that the chain storage device is automatically switched to the circulating chain mode. In addition, when the counterweight sprocket 28 is placed on the ground, it can be attached to the ground mechanism to straighten the circulating chain and prevent it from swinging and bending left and right.

[0052] The down chain mode is the chain releasing action of the chain storage device from the top of the building. In the down chain mode A, the brake of the chain storage winding 20 is released, the brake of the temporary winding 10 is braked, the coupling mechanism 30 is decoupled, and the chain ladder 2 below the chain storage winding 20 is driven by the weight of the counterweight sprocket 28 to release the chain. The chain storage roller 21 is slowly rotated by the damping mechanism 25, and the chain ladder 2 is output through the input and output tensioner 40 until the counterweight sprocket 28 is placed on the ground.

[0053] The up chain mode is the chain winding action of the chain storage device from the ground to the top of the building. In the up chain mode B, the brake of the chain storage winding 20 is released, the brake of the temporary winding 10 is braked, the coupling mechanism 30 is decoupled, and the chain ladder 2 is wound onto the chain storage roller 21 by manually rotating the chain storage roller 21 through the hand crank until the counterweight sprocket 28 is lifted to the top of the building. The chain storage roller 21 is braked. The up chain action needs to operate the mode switcher of the counterweight sprocket 28 to switch to the up chain mode B.

[0054] The circulating chain mode is the circulating chain action of the down chain and the up chain simultaneously. After the down chain mode A is completed, the counterweight sprocket 28 is placed on the ground, and the circulating mode starting switch is activated to automatically switch to the circulating chain mode. The chain storage winding 20 is coupled to the temporary winding 10 through the coupling mechanism 30. For every turn of the chain ladder 2 wound onto the chain storage roller 21, the temporary roller 11 releases a turn of the roller chain. The length of the circulating chain ladder between the top of the building and the ground remains unchanged, and it always hangs in front of the building to circulate back and forth, maximizing the waiting time for everyone to get off the chain ladder.

[0055] Example 2

[0056] Anti-pairing chain is added, only the differences are described, and the other features are the same as in Example 1.

[0057] A parallel double-shaft chain storage device for a fire-fighting circulating chain ladder of a high-rise building fire-fighting engineering, further comprises

[0058] Anti-knotting chain 60 is arranged on temporary winding 10 and chain storage winding 20 respectively, and is used to prevent winding knotting of single chain ladder and to make the winding-in or winding-out position directly opposite to the entering or exiting tension 40; anti-knotting chain 60 comprises a helical groove section 61 and a straight-moving counter chain section 62, and temporary roller 11 and chain storage roller 21 are respectively provided with anti-knotting chain 60; helical groove section 61 is provided with a helical chain groove 64 with a pitch W, and one end of the roller chain is fixed to the starting end of the helical chain groove 61; rotating temporary roller 11 or chain storage roller 21 can helically wind the roller chain in the helical chain groove 64 and only wind one layer; straight-moving counter chain section 62 comprises a threaded rod 66 coaxially and integrally connected with helical groove section 61 and a nut sleeve 65 threadedly matched with the threaded rod 66; nut sleeve 65 is fixed to the rack, and threaded rod 66 rotates in nut sleeve 65 to realize axial movement, and moves one pitch W per week; coupling bearing seat 38 is slidingly arranged in coupling slide rail 39.

[0059] Temporary winding 10 further comprises a coupling groove section 63 coaxially and integrally connected with straight-moving counter chain section 62; coupling groove section 63 is centrally symmetrically provided with a plurality of sliding grooves 67, and the inner hole of temporary gear 32 is provided with a plurality of corresponding sliding blocks 68; sliding blocks 68 are slidingly matched in sliding grooves 67, and sliding blocks 68 are matched with sliding grooves 67 to realize the rotation of temporary roller 11 while moving axially. The axial movement of sliding blocks 68 drives the movement of coupling bearing seat 38 of coupling mechanism 30.

[0060] Action description: because single chain ladder 2 has steel wire ropes on both sides, the ropes are stacked and wound closely, are easy to be overlapped, and have entanglement phenomenon when the ropes are taken out, and the disentanglement brings the stop of use, so the helical groove is arranged; chain storage winding 20 and temporary winding 10 both make single chain ladder 2 helically wound, and at the same time, the roller moves axially through the fixed nut sleeve matched with threaded rod 66, and the axial movement amount is equal to the pitch W of the helical groove, so that the entering or exiting position of single chain ladder 2 is always aligned with each level sprocket. At the same time, because temporary roller rotates and moves straightly, coupling groove section 63 is arranged on the temporary roller to make temporary gear 63 only transmit rotation and not hinder the straight movement of temporary roller.

[0061] A parallel double-shaft chain storage device of a fire-fighting circulating chain ladder of a high-rise building fire-fighting engineering, temporary winding 10 cooperates with chain storage winding 20 to realize three modes of chain taking-out, chain winding-in and chain circulating, changes the Z-shaped folding chain storage into winding chain storage, makes the chain storage small in size and not easy to be jammed, and the hanging state of the up and down chains and the circulating state can be used for climbing, which has great practical value.

Claims

1. A parallel dual-axis chain storage device for a fire-fighting circulating chain ladder in a high-rise building fire protection engineering project, comprising a frame, characterized in that, Also includes Temporary winding (10) includes a temporary roller (11), one end of the roller chain is fixed to the temporary roller (11), and rotating the temporary roller (11) can wind the roller chain side by side and in multiple layers on it; Storage chain winding (20) can be selectively coupled to temporary winding (10). Storage chain winding (20) includes storage chain roller shaft (21). The other end of the roller chain is fixed to storage chain roller shaft (21) and wound on it in parallel and in multiple layers. Storage chain roller shaft (21) and temporary roller shaft (11) are arranged parallel and spaced apart. The coupling mechanism (30) is located at the storage chain winding (20). The coupling mechanism (30) can selectively drive and connect the temporary winding (10) to simulate the chain ladder cycle, so that the roller chain that is not connected at the beginning and end is cyclically located between the temporary winding and the storage chain winding. The chain ladder cycle is realized as follows: the storage chain winding (20) winds / releases the chain while the temporary winding (10) winds / releases the chain, and the winding / release speed of the storage chain winding (20) is equal to the winding / release speed of the temporary winding (10).

2. The parallel dual-axis chain storage device for the fire-fighting circulating chain ladder in high-rise building fire protection engineering as described in claim 1, characterized in that, It also includes an inlet / outlet tensioning (40), which includes an inlet / outlet sprocket (42), a tensioning wheel one (43), and a tensioning wheel two (44) arranged on the same plane. The shafts of the inlet / outlet sprocket (42), the tensioning wheel one (43), and the tensioning wheel two (44) form an isosceles triangle (41). The inlet / outlet tensioning (40) is coaxially connected to the temporary winding (10) and the chain storage winding (20), respectively.

3. The parallel dual-axis chain storage device for the fire-fighting circulating chain ladder in high-rise building fire protection engineering as described in claim 2, characterized in that, The storage chain winding (20) includes a storage chain support (22) fixed on the roof, a storage chain roller (21) rotatably mounted on the storage chain support (22), a gear ring (23) coaxially fixed on the storage chain roller (21), the gear ring (23) meshing with a damping gear (24), and the shaft of the damping gear (24) connected to a damping mechanism (25).

4. The parallel dual-axis chain storage device for the fire-fighting circulating chain ladder in high-rise building fire protection engineering as described in claim 3, characterized in that, The storage chain winding (20) also includes a counterweight sprocket (28), which is located between the storage chain winding (20) and the temporary winding (10). The roller chain turns back into the temporary winding (10) through the meshing counterweight sprocket (28) to form a circulating chain.

5. A parallel dual-axis chain storage device for a fire-fighting circulating chain ladder in a high-rise building fire protection project as described in claim 1, characterized in that, The coupling mechanism (30) includes a chain storage gear (31) and a temporary gear (32). The chain storage gear (31) is fixed to the first rotating shaft (33), and the temporary gear (32) is fixed to the temporary gear (32). The temporary gear (32) meshes with the chain storage gear (31). The first rotating shaft (33) is selectively connected to the chain storage roller shaft (21) via a coupling (34).

6. The parallel dual-axis chain storage device for the fire-fighting circulating chain ladder in high-rise building fire protection engineering as described in claim 5, characterized in that, The selective transmission connection of the coupling is achieved as follows: the first rotating shaft (33) is coaxially and retractably provided with a magnetic left coupling (34), a return spring (37) is provided between the first rotating shaft (33) and the magnetic left coupling (34), the end of the return spring (37) is connected to the magnetic left coupling (34), the magnetic left coupling (34) is connected to the on / off electromagnetic circuit i, and a permanent magnet right coupling (36) is fixed at the end of the chain storage roller shaft (21).

7. The parallel dual-axis chain storage device for the fire-fighting circulating chain ladder in high-rise building fire protection engineering as described in claim 6, characterized in that, It also includes an anti-tangle chain (60), which is respectively set on the temporary winding (10) and the chain storage winding (20). It is used to prevent the roller chain from tangling and knotting. It is spirally wound on it in only one layer and the winding entry or winding exit position is directly opposite the circulation plane of the roller chain. The anti-tangle chain (60) includes a spiral groove section (61) and a straight-moving chain section (62). The spiral groove section (61) is provided with a spiral chain groove (64) with a pitch W. The straight-moving chain section (62) includes a threaded rod (66) and a nut sleeve (65) that are coaxially and integrally connected with the spiral groove section (61). The nut sleeve (65) is fixed to the frame and the threaded rod (66) is rotatably fitted to the nut sleeve (65). The pitch of the threaded rod is equal to the pitch W of the spiral chain groove (64).

8. The parallel dual-axis chain storage device for the fire-fighting circulating chain ladder in the fire protection engineering of high-rise buildings as described in any one of claims 1-6, characterized in that, The anti-knotting chain (60) also includes a coupling groove section (63) provided on the temporary roller shaft (11). The coupling groove section (63) is coaxially and integrally connected to the direct-moving chain section (62). The coupling groove section (63) is symmetrically provided with multiple sliding grooves (67) at the center of its circumference. The inner hole of the temporary gear (32) is provided with multiple corresponding sliders (68), and the sliders (68) slide in the sliding grooves (67).

9. The parallel dual-axis chain storage device for the fire-fighting circulating chain ladder in high-rise building fire protection engineering as described in claim 8, characterized in that, The chain storage device switches between chain-down mode A, chain-up mode B, and chain-circulating mode C. In chain-down mode A, the brake of the chain-storage winding (20) is released, the brake of the temporary winding (10) is applied, the coupling mechanism (30) is decoupled, and the roller chain below the chain-storage winding (20) is released by the weight of the counterweight sprocket (28). The chain-storage roller shaft (21) rotates slowly to output the roller chain until the counterweight sprocket (28) is placed on the ground. In chain-up mode B, the brake of the chain-storage winding (20) is released, the brake of the temporary winding (10) is applied, the coupling mechanism (30) is decoupled, and the chain-storage roller shaft (21) is manually rotated by hand crank to drive the roller chain to wind onto the chain-storage roller shaft (21) until the counterweight sprocket (28) rises to the top of the building, and the chain-storage roller shaft (21) is braked.

10. The parallel dual-axis chain storage device for the fire-fighting circulating chain ladder in high-rise building fire protection engineering as described in claim 9, characterized in that, The chain storage device mainly operates in the circulating chain mode C. The chain storage winding (20) is coupled to the temporary winding (10) through the coupling mechanism (30). Every time the roller chain is wound or unwound by the chain storage roller (21), the temporary roller (11) unwound or wound the roller chain once. Thus, the length of the circulating chain ladder between the roof and the ground remains unchanged.

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