A stair bifurcation device and bifurcation method for building stairs

Abstract

The present invention belongs to the field of building construction technology, and in particular, is a staircase bifurcation device and bifurcation method for building stairs, comprising a main staircase, wherein the surfaces of the upper and lower ends of the main staircase are respectively hinged with support plates through hinge plates, a bifurcation platform is fixedly connected to the surface of one side of the lower support plate, a height adjustment mechanism is arranged on the surface of the support plates at both ends, two groups of bifurcated stairs are arranged at the free end of the bifurcated platform, an angle adjustment mechanism is arranged on the rear surface of the bifurcated stairs, and a bifurcated mechanism is arranged on the lower surface of the bifurcated platform. The staircase bifurcation device and bifurcation method for building stairs, by driving the worm gear to mesh and drive the adjusting screw to rotate, so that the T-shaped block threadedly sleeved on the outer surface of the adjusting screw moves downward, so that it drives the driving plate to move downward, and then pulls the driving shaft to move in the driving slide groove, so that it drives the two driving blocks to rotate in an eight-shaped shape, thereby synchronously driving the bifurcated stairs on one side of the connecting platform to bifurcate, thereby achieving the effect of diversion.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to a stair bifurcation device and a bifurcation method for building stairs. Background Art

[0002] Stairs in construction refer to temporary stairs used by workers, equipment and materials to go up and down floors during the construction process. Construction stairs are very important facilities on construction sites, especially during the construction phase of multi-story or high-rise buildings. It not only provides a safe and convenient vertical passage for construction workers, but also ensures construction efficiency.

[0003] Building stairs are the main passages for workers and technicians to go up and down floors. Especially in high-rise building construction, personnel need to go up and down floors frequently. Construction stairs provide a fast and safe vertical passage. However, when there is a large flow of workers on the building stairs, if there is crowding or parallel situations, it will cause safety hazards.

[0004] A Chinese patent with authorization announcement number CN109235796A discloses a stair bifurcation device for building stairs, including a support plate, reinforcing ribs, bolt connectors and concrete, wherein the support plate is connected to the concrete through the reinforcing steel plate and the bolt connectors.

[0005] The above technical solution uses reinforcing ribs and bolt connectors to form a fixed bifurcated structure on the support plate so that it can be used as a bifurcated staircase. However, the bifurcated staircase has poor flexibility and occupies a large space, which is not conducive to its later disassembly and storage. When transporting materials, if the bifurcated staircase is always bifurcated, it will be unfavorable for the upward movement of materials, which will cause safety hazards to both personnel and machines. Therefore, the present invention solves the shortcomings of the above technical problems. Summary of the invention

[0006] Based on the above-mentioned existing technical problems, the present invention proposes a stair bifurcation device and a bifurcation method for building stairs.

[0007] The present invention proposes a staircase branching device for building stairs, comprising a main staircase, wherein the surfaces of the upper and lower ends of the main staircase are respectively hinged with support plates through hinged plates, a side surface of the support plate at the lower end is fixedly connected with a branching platform, the surfaces of the support plates at both ends are provided with height adjustment mechanisms, two groups of branching stairs are provided at the free ends of the branching platforms, the rear side surfaces of the branching stairs are provided with an angle adjustment mechanism, and the lower surface of the branching platform is provided with a branching mechanism.

[0008] Wherein, the height adjustment mechanism adjusts the placement angle of the main staircase so that the free end of the bifurcated staircase contacts the ground.

[0009] Wherein, the bifurcated mechanism opens the two parallel groups of bifurcated stairs, so that an angle is formed between the two groups of bifurcated stairs.

[0010] Wherein, the angle adjustment mechanism levels the adjusted bifurcated staircase to make it walkable.

[0011] Preferably, the height adjustment mechanism includes a balance rod hinged to one side surface of the lower support plate through a hinge plate, and a slide tube is fixedly connected to one side surface of the upper support plate, and the outer surface of the balance rod is slidably connected to the inner wall of the slide tube.

[0012] Through the above technical scheme, in order to distribute the force when the main staircase is adjusted in height, balance bars are set on both sides of the main staircase, so that the balance bars not only serve as guardrails for protection, but also when the height of one end of the main staircase connected to the forked platform is adjusted, the balance bar can be extended and retracted in the slide tube, thereby adapting to the height of the main staircase and providing force support to the upper end of the support plate.

[0013] Preferably, the height adjustment mechanism also includes a pushing cylinder cross-connected to the side surface of the upper support plate, a pushing plate is movably installed on the side surface of the ladder frame of the main staircase, the piston rod surface of the pushing cylinder is hinged to the side surface of the pushing plate, and a drag-reducing roller is installed on the free end surface of the forked staircase.

[0014] Through the above technical solution, in order to adjust the placement angle of the building stairs, the push plate is pushed or pulled by pushing the piston rod of the cylinder, and then the ladder frame of the main staircase can be lowered or lifted, so that the free end of the forked staircase contacts the ground to support the stairs. In order to reduce the resistance of the forked staircase moving on the ground, when adjusting the inclination angle of the building body, the forked staircase moves with the drag-reducing roller.

[0015] Preferably, the bifurcated mechanism comprises a connecting platform fixedly connected to the rear surface of the bifurcated staircase, a support shaft is rotatably connected to one side surface of the connecting platform, and a driving block is rotatably connected to the outer surface of the free end of the support shaft.

[0016] Through the above technical scheme, in order to control the bifurcation of the building staircase to achieve the diversion effect, the driving block is controlled to rotate relative to each other in an eight-shaped shape, and then the connecting platform connected by the support shaft drives the bifurcated stairs to rotate relative to each other, so that the angle between the two bifurcated stairs is 30°-45°, so that the staff on the bifurcated platform can be diverted.

[0017] Preferably, the bifurcation mechanism also includes a support beam symmetrically distributed and fixedly connected to the lower surface of the bifurcation platform, one side surface of the driving block is rotatably connected to the one side surface of the support beam via a rotating shaft, and the driving block is fixedly connected to a driving shaft at a corner near the one side surface of the support beam.

[0018] Through the above technical scheme, in order to realize the bifurcation action of the bifurcated staircase, the driving shaft is rotated relatively synchronously, and the driving block near the middle is also rotated and connected to the surface of the support beam, so that the driving shaft can drive the bifurcated staircase to rotate relative to each other in an eight-shaped shape to achieve bifurcation.

[0019] Preferably, the bifurcated mechanism further comprises a driving plate slidably connected to a side surface of the support beam, a side surface of the driving plate is symmetrically provided with driving grooves, and an outer surface of the driving shaft is slidably engaged with an inner wall of the driving groove.

[0020] Through the above technical solution, in order to control the relative rotation of the driving shaft, the driving plate moves downward, so that the driving shaft moves in the driving slot, thereby driving the two driving blocks to rotate in an eight-shaped shape.

[0021] Preferably, the bifurcation mechanism also includes a T-shaped block fixedly connected to the surface of one side of the driving plate, a guide groove is provided on the surface of the support beam, the two end surfaces of the T-shaped block are slidably engaged with the inner wall of the guide groove, the lower surface of the bifurcation platform is rotatably connected with an adjusting screw, and the T-shaped block is threadedly sleeved on the outer surface of the adjusting screw.

[0022] Through the above technical solution, in order to drive the driving plate to move downward and realize the bifurcation of the bifurcated stairs, the adjusting screw is rotated so that the T-shaped block threaded on the outer surface of the adjusting screw moves downward, thereby driving the driving plate to move downward, and the T-shaped plate maintains linear movement through the guidance of the guide groove.

[0023] Preferably, the forked platform is equipped with a drive motor through a cavity opened inside the platform, the outer surface of the output shaft of the drive motor is fixedly connected to a drive screw, the outer surface of the adjusting screw extending to the inside of the cavity is fixedly sleeved with a drive worm gear, and the adjusting screw is meshed with the drive worm gear.

[0024] Through the above technical solution, in order to drive the adjusting screw to rotate, the driving motor installed inside the cavity opened by the forked platform drives the driving screw to rotate, thereby driving the adjusting screw to rotate through the engagement of the driving worm gear, thereby realizing the downward movement of the T-shaped block.

[0025] Preferably, the angle adjustment mechanism includes a driving cavity opened inside the driving block, the support shaft extends to the outer surface of the driving cavity and is fixedly sleeved with a rotating worm gear, one side surface of the driving block is fixedly connected to a reduction motor, the output shaft of the reduction motor extends to the outer surface of the driving cavity and is fixedly connected to a rotating worm through a coupling, the rotating worm is meshed with the rotating worm gear, and the other side surface of the driving block is fixedly connected to an inclination sensor.

[0026] Through the above technical solution, the forked stairs are inclined as the driving block rotates, and one end is tilted. In order to make the adjusted forked stairs stable and convenient for the staff to pass through, the connecting platform is controlled to rotate to a horizontal position under the monitoring of the inclination sensor, so that the drag-reducing rollers of the forked stairs contact the ground for support, and then the worm is driven to rotate by the reduction motor, so that the meshing worm gear drives the support shaft on the connecting platform to rotate, thereby realizing the rotation of the forked stairs until the forked stairs are horizontal.

[0027] Preferably, the angle adjustment mechanism also includes a locking cavity provided inside the driving block, the outer surface of the support shaft extending to the inside of the locking cavity is fixedly sleeved with a locking gear, the inner bottom wall and the inner top wall of the locking cavity are respectively fixedly connected with a guide rod with a guide groove, and two locking blocks are slidably clamped between the two guide rods, the outer surfaces of the two locking blocks are slidably clamped with the outer surface of the locking gear, the lower surface of the locking block is fixedly connected with a connecting block, and a through hole is formed through the surface of the guide rod at the lower end, and the outer surface of the connecting block is slidably clamped with the inner wall of the through hole, the lower surface of one of the connecting blocks is fixedly connected with a telescopic cylinder, and the lower surface of the other connecting block is fixedly connected with a linkage shaft, and the piston rod surface of the telescopic cylinder is fixedly connected to one side surface of the linkage shaft.

[0028] Through the above technical scheme, in order to lock the forked stairs after the support shaft drives the forked stairs to be adjusted horizontally and realize stable support of the forked stairs, the locking gear is driven to rotate by the support shaft. When the locking gear does not rotate, the locking blocks on both sides thereof move synchronously relative to each other between the guide rods, so that the tooth surface of the locking block clamps the locking gear, thereby preventing it from rotating. In order to drive the two locking blocks to move synchronously, the telescopic cylinder is connected to the surface of the movable connecting block. When the linkage shaft is pulled by the piston rod of the telescopic cylinder, the two connecting blocks can slide closer to each other in the through hole until the locking block clamps the locking gear.

[0029] The present invention provides a bifurcating method for a stair bifurcating device for building stairs, comprising the following steps:

[0030] S1. Lower the building stairs according to the height between the construction platform and the building floor, so that the piston rods of the two push cylinders push the push plate, and then lower the ladder frame of the main staircase;

[0031] S2. At this time, the balance bar is extended and retracted in the slide tube, thereby adapting to the height of the main staircase and providing force support to the upper end of the support plate. The bifurcated platform and the bifurcated staircase are lowered along with the main staircase until the drag reduction roller contacts the floor. With the push of the push cylinder, the drag reduction roller rolls on the floor, so that a stable support angle is formed between the bifurcated staircase, the bifurcated platform and the main staircase.

[0032] S3. When there are many workers on the forked platform, in order to avoid the workers from crowding down or going down in parallel to cause safety hazards, the parallel forked stairs are forked, so that the driving motor installed inside the cavity opened by the forked platform drives the driving screw to rotate, thereby driving the adjusting screw to rotate through the engagement of the driving worm gear, so that the T-shaped block threaded on the outer surface of the adjusting screw moves downward, so that it drives the driving plate to move downward, and then pulls the driving shaft to move in the driving slide groove, so that it drives the two driving blocks to rotate in an eight-shaped shape, and the position of the driving block near the middle is also rotatably connected to the surface of the support beam, so that the driving block can synchronously drive the forked stairs on one side of the connecting platform to fork, and the fork angle is 30°-45°, thereby improving safety;

[0033] S4. The bifurcated staircase is tilted with one end tilted after the driving block rotates. In order to place the adjusted bifurcated staircase stably and conveniently for workers to pass through, the connecting platform is controlled to rotate to a horizontal position under the monitoring of the inclination sensor, so that the drag reduction roller of the bifurcated staircase contacts the ground for support, and then the rotating worm is driven by the reduction motor to rotate, so that the supporting shaft on the connecting platform is driven to rotate through the meshing rotating worm gear, thereby controlling the bifurcated staircase to rotate until the tilted drag reduction roller contacts the floor and the bifurcated staircase is horizontal. At this time, the gap between the two bifurcated staircases from top to bottom gradually increases, thereby playing a role of diversion;

[0034] S5. When the support shaft rotates, it drives the locking gear to rotate. After the adjustment is completed, the support shaft is prevented from rotating and causing angle deviation, which may lead to safety hazards. When the locking gear does not rotate, the telescopic cylinder in the locking cavity is actuated to make its piston rod pull the linkage shaft, so that the two connecting blocks slide closer to each other in the through hole until the locking block holds the locking gear tightly, so that the adjusted forked staircase is in a locked state. When the building staircase is stored, the forked staircase is reset after forking, and then moved away with the main staircase after parallel connection.

[0035] The beneficial effects of the present invention are:

[0036] 1. By setting up a height adjustment mechanism, the building stairs can be placed on the construction platform and the floor. During the adjustment process, the piston rod of the cylinder is pushed or pulled to push the push plate, and then the ladder frame of the main staircase can be lowered or lifted, so that the free end of the bifurcated staircase contacts the ground to support the staircase.

[0037] 2. By setting up a bifurcated mechanism, the parallelism and bifurcation of the bifurcated stairs can be adjusted to achieve flexibility and be suitable for the diversion of personnel and the transportation of goods. In the process of adjustment, the adjusting screw is driven to rotate by driving the worm gear to engage, so that the T-shaped block threaded on the outer surface of the adjusting screw moves downward, so that it drives the driving plate to move downward, and then pulls the driving shaft to move in the driving slide groove, so that it drives the two driving blocks to rotate in an eight-shaped shape, and the position of the driving block near the middle is also rotated and connected to the surface of the support beam, so that the driving block can synchronously drive the bifurcated stairs on one side of the connecting platform to bifurcate, and the bifurcation angle is 30°-45°, thereby improving safety and achieving the effect of diversion.

[0038] 3. By setting an angle adjustment mechanism, the angle of the adjusted bifurcated stairs can be adjusted to make it stable. During the adjustment process, the connecting platform is controlled to rotate to a horizontal position under the monitoring of the inclination sensor, so that the drag-reducing rollers of the bifurcated stairs contact the ground for support. At the same time, when the locking gear does not rotate, the telescopic cylinder in the locking cavity is actuated to make its piston rod pull the linkage shaft, thereby making the two connecting blocks slide closer to each other in the through hole until the locking block holds the locking gear tightly, so that the adjusted bifurcated stairs are in a locked state. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A schematic diagram of a stair bifurcation device and a bifurcation method for building stairs proposed by the present invention;

[0040] Figure 2 A three-dimensional diagram of the main staircase structure of a staircase bifurcation device and a bifurcation method for building stairs proposed by the present invention;

[0041] Figure 3 A three-dimensional diagram of a bifurcating platform structure of a stair bifurcating device and a bifurcating method for building stairs proposed by the present invention;

[0042] Figure 4 A three-dimensional diagram of a bifurcated staircase structure of a staircase bifurcating device and a bifurcating method for building stairs proposed by the present invention;

[0043] Figure 5 A three-dimensional diagram of a connecting platform structure of a staircase bifurcation device and bifurcation method for building stairs proposed by the present invention;

[0044] Figure 6 A three-dimensional diagram of a rotating worm gear structure of a staircase bifurcation device and bifurcation method for building stairs proposed by the present invention;

[0045] Figure 7 A three-dimensional diagram of a locking gear structure of a stair bifurcation device and a bifurcation method for building stairs proposed by the present invention;

[0046] Figure 8 A three-dimensional diagram of a locking block structure of a staircase bifurcation device and a bifurcation method for building stairs proposed by the present invention;

[0047] Fig. 9 A three-dimensional diagram of a driving plate structure of a staircase bifurcation device and a bifurcation method for building stairs proposed by the present invention;

[0048] Fig.10 A three-dimensional diagram of a driving chute structure of a staircase bifurcation device and a bifurcation method for building stairs proposed by the present invention;

[0049] Fig.11 A three-dimensional diagram of a T-shaped block structure of a staircase bifurcation device and a bifurcation method for building stairs proposed by the present invention.

[0050] In the figure: 1. main staircase; 2. support plate; 3. forked platform; 4. forked staircase; 5. height adjustment mechanism; 51. balance bar; 52. slide; 53. push cylinder; 54. push plate; 55. drag reduction roller; 6. fork mechanism; 61. connecting platform; 62. support shaft; 63. drive block; 64. support beam; 65. drive shaft; 66. drive plate; 67. drive slide; 68. T-block; 69. guide groove; 70. adjustment screw; 71. drive motor; 72. drive screw; 73. drive worm gear; 8. angle adjustment mechanism; 81. drive cavity; 82. rotating worm gear; 83. reduction motor; 84. rotating worm; 85. inclination sensor; 86. locking cavity; 87. locking gear; 88. guide rod; 89. locking block; 90. connecting block; 91. perforation; 92. telescopic cylinder; 93. linkage shaft. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0052] Reference Figure 1-Figure 11 A staircase branching device for building stairs comprises a main staircase 1, the upper and lower surfaces of the main staircase 1 are hinged with support plates 2 through hinged plates respectively, a side surface of the lower support plate 2 is fixedly connected with a branching platform 3, the surfaces of the support plates 2 at both ends are provided with height adjustment mechanisms 5, the free ends of the branching platforms 3 are provided with two groups of branching stairs 4, the rear side surfaces of the branching stairs 4 are provided with an angle adjustment mechanism 8, and the lower surface of the branching platform 3 is provided with a branching mechanism 6.

[0053] The height adjustment mechanism 5 adjusts the placement angle of the main staircase 1 so that the free end of the branch staircase 4 contacts the ground.

[0054] In order to distribute the force of the main staircase 1 when the height is adjusted, the height adjustment mechanism 5 includes a balance rod 51 hinged to the side surface of the lower support plate 2 through a hinge plate, and a slide tube 52 is fixedly connected to the side surface of the upper support plate 2. The outer surface of the balance rod 51 is slidably sleeved with the inner wall of the slide tube 52. The balance rod 51 is arranged on both sides of the main staircase 1, so that the balance rod 51 not only serves as a guardrail for protection, but also when the height of one end of the main staircase 1 connected to the fork platform 3 is adjusted, the balance rod 51 is extended and retracted in the slide tube 52, thereby adapting to the height of the main staircase 1 and providing force support to the upper end of the support plate 2.

[0055] In order to adjust the placement angle of the building stairs, the height adjustment mechanism 5 also includes a pushing cylinder 53 which is cross-connected to the side surface of the upper end support plate 2. A pushing plate 54 is movably installed on the side surface of the ladder frame of the main staircase 1. The piston rod surface of the pushing cylinder 53 is hinged to the side surface of the pushing plate 54. The pushing plate 54 is pushed or pulled by the piston rod of the pushing cylinder 53, and then the ladder frame of the main staircase 1 can be lowered or lifted, so that the free end of the forked staircase 4 contacts the ground to support the stairs. In order to reduce the resistance of the forked staircase 4 moving on the ground, a drag reducing roller 55 is installed on the free end face of the forked staircase 4. When the inclination angle of the building body is adjusted, the forked staircase 4 moves with the drag reducing roller 55.

[0056] By setting up a height adjustment mechanism 5, the building stairs can be placed to adapt to the construction platform and the floor. During the adjustment process, the piston rod of the push cylinder 53 pushes or pulls the push plate 54, and then the ladder frame of the main staircase 1 can be lowered or lifted, so that the free end of the forked staircase 4 contacts the ground to support the stairs.

[0057] The bifurcating mechanism 6 opens the two parallel groups of bifurcated stairs 4 so that an angle is formed between the two groups of bifurcated stairs 4 .

[0058] In order to control the bifurcation of the building stairs to achieve the diversion effect, the control driving block 63 is controlled to rotate relatively in an eight-shaped shape, and then the bifurcation mechanism 6 includes a connecting platform 61 fixedly connected to the rear surface of the bifurcated staircase 4, and one side surface of the connecting platform 61 is rotatably connected to a support shaft 62, and the outer surface of the free end of the support shaft 62 is rotatably connected to a driving block 63. The connecting platform 61 connected by the support shaft 62 drives the bifurcated staircase 4 to rotate relatively, so that the angle between the two bifurcated staircases 4 is 30°-45°, so that the staff on the bifurcated platform 3 can be diverted.

[0059] In order to realize the bifurcation action of the bifurcated staircase 4, the bifurcation mechanism 6 also includes a support beam 64 which is symmetrically distributed and fixedly connected to the lower surface of the bifurcation platform 3. One side surface of the driving block 63 is rotatably connected to the one side surface of the support beam 64 through a rotating shaft. The driving block 63 is fixedly connected to a driving shaft 65 at a corner of the one side surface of the supporting beam 64, and the driving shaft 65 rotates relatively synchronously. The driving block 63 is also rotatably connected to the surface of the supporting beam 64 near the middle, so that the driving shaft 65 can drive the bifurcated staircase 4 to rotate relative to each other in an eight-shaped shape to realize bifurcation.

[0060] In order to control the relative rotation of the driving shaft 65, the fork mechanism 6 also includes a driving plate 66 slidably connected to the side surface of the support beam 64. The side surface of the driving plate 66 is symmetrically provided with driving grooves 67. The outer surface of the driving shaft 65 is slidably engaged with the inner wall of the driving groove 67. The driving plate 66 moves downward, so that the driving shaft 65 moves in the driving groove 67, thereby driving the two driving blocks 63 to rotate in an eight-shaped shape.

[0061] In order to drive the driving plate 66 to move downward and realize the bifurcation of the bifurcated stairs 4, the bifurcation mechanism 6 also includes a T-shaped block 68 fixedly connected to the surface of one side of the driving plate 66, and a guide groove 69 is provided on the surface of the support beam 64. The two end surfaces of the T-shaped block 68 are slidably engaged with the inner wall of the guide groove 69, and the lower surface of the bifurcation platform 3 is rotatably connected with an adjusting screw 70. The T-shaped block 68 is threadedly sleeved on the outer surface of the adjusting screw 70. By rotating the adjusting screw 70, the T-shaped block 68 threadedly sleeved on the outer surface of the adjusting screw 70 moves downward, thereby driving the driving plate 66 to move downward, and the T-shaped plate maintains linear movement through the guidance of the guide groove 69.

[0062] In order to drive the adjusting screw 70 to rotate, the forked platform 3 is equipped with a driving motor 71 through a cavity opened inside it, and the outer surface of the output shaft of the driving motor 71 is fixedly connected to the driving screw 72, and the outer surface of the adjusting screw 70 extending to the inside of the cavity is fixedly sleeved with a driving worm gear 73, and the adjusting screw 70 is meshed with the driving worm gear 73. The driving motor 71 installed inside the cavity opened in the forked platform 3 drives the driving screw 72 to rotate, thereby driving the adjusting screw 70 to rotate through the meshing of the driving worm gear 73, thereby realizing the downward movement of the T-shaped block 68.

[0063] After the driving block 63 rotates, the bifurcated staircase 4 becomes inclined, and one end is tilted. In order to make the adjusted bifurcated staircase 4 stably placed for the convenience of the staff to pass through, the angle adjustment mechanism 8 includes a driving cavity 81 opened in the driving block 63, the outer surface of the support shaft 62 extending to the inside of the driving cavity 81 is fixedly sleeved with a rotating worm gear 82, one side surface of the driving block 63 is fixedly connected with a reduction motor 83, the output shaft of the reduction motor 83 extends to the outer surface of the inside of the driving cavity 81 and is fixedly connected with a rotating worm 84 through a coupling, the rotating worm 84 is meshed with the rotating worm gear 82, and the other side surface of the driving block 63 is fixedly connected with an inclination sensor 85. Under the monitoring of the inclination sensor 85, the connecting platform 61 is controlled to rotate to the horizontal, so that the drag reduction roller 55 of the bifurcated staircase 4 contacts the ground for support, and then the reduction motor 83 drives the rotating worm 84 to rotate, so that the meshing rotating worm gear 82 drives the support shaft 62 on the connecting platform 61 to rotate, thereby realizing the rotation of the bifurcated staircase 4 until the bifurcated staircase 4 is horizontal.

[0064] By setting up the bifurcation mechanism 6, the parallelism and bifurcation of the bifurcated stairs 4 can be adjusted to achieve flexibility and be suitable for the diversion of personnel and the transportation of goods. During the adjustment process, the adjusting screw 70 is driven to rotate by driving the worm gear 73 to engage, so that the T-shaped block 68 threadedly sleeved on the outer surface of the adjusting screw 70 moves downward, so that it drives the driving plate 66 to move downward, and then pulls the driving shaft 65 to move in the driving slide groove 67, so that it drives the two driving blocks 63 to rotate in an eight-shaped shape, and the driving block 63 near the middle is also rotated and connected to the surface of the support beam 64, so that the driving block 63 can synchronously drive the bifurcated stairs 4 on one side of the connecting platform 61 to bifurcate, and the bifurcation angle is 30°-45°, thereby improving safety and achieving the diversion effect.

[0065] The angle adjustment mechanism 8 levels the adjusted branched staircase 4 to make it walkable.

[0066] In order to lock the forked staircase 4 after the support shaft 62 drives it to adjust horizontally and realize stable support of the forked staircase 4, the angle adjustment mechanism 8 also includes a locking cavity 86 opened in the driving block 63, and the outer surface of the support shaft 62 extending to the inside of the locking cavity 86 is fixedly sleeved with a locking gear 87, and the inner bottom wall and the inner top wall of the locking cavity 86 are respectively fixedly connected with a guide rod 88 with a guide groove 69, and two locking blocks 89 are slidably engaged between the two guide rods 88, and the outer surfaces of the two locking blocks 89 are slidably engaged with the outer surface of the locking gear 87, and the lower surface of the locking block 89 is fixedly connected with a connecting block 90, and the surface of the lower end guide rod 88 is penetrated by a through hole 91, and the outer surface of the connecting block 90 is slidably engaged with the inner wall of the through hole 91, 62 drives the locking gear 87 to rotate. When the locking gear 87 does not rotate, the locking blocks 89 on both sides thereof move synchronously relative to each other between the guide rods 88, so that the tooth surfaces of the locking blocks 89 hold the locking gear 87 tightly, thereby preventing it from rotating. In order to drive the two locking blocks 89 to move synchronously, a telescopic cylinder 92 is fixedly connected to the lower surface of one of the connecting blocks 90, and a linkage shaft 93 is fixedly connected to the lower surface of the other connecting block 90. ​​The piston rod surface of the telescopic cylinder 92 is fixedly connected to the surface of one side of the linkage shaft 93. The telescopic cylinder 92 is connected to the surface of the movable connecting block 90. ​​When the linkage shaft 93 is pulled by the piston rod of the telescopic cylinder 92, the two connecting blocks 90 can slide closer to each other in the through hole 91 until the locking block 89 holds the locking gear 87 tightly.

[0067] By setting up the angle adjustment mechanism 8, the angle of the adjusted bifurcated staircase 4 can be adjusted to make it stable. During the adjustment process, the connecting platform 61 is controlled to rotate to the horizontal under the monitoring of the inclination sensor 85, so that the drag reduction roller 55 of the bifurcated staircase 4 contacts the ground for support. At the same time, when the locking gear 87 does not rotate, the telescopic cylinder 92 in the locking cavity 86 is actuated to make its piston rod pull the linkage shaft 93, thereby making the two connecting blocks 90 slide closer to each other in the through hole 91 until the locking block 89 holds the locking gear 87 tightly, so that the adjusted bifurcated staircase 4 is in a locked state.

[0068] Reference Figure 1-Figure 11 , a bifurcation method for a stair bifurcation device for building stairs, comprising the following steps:

[0069] S1. Lower the building staircase according to the height between the construction platform and the building floor, so that the piston rods of the two push cylinders 53 push the push plate 54, and then lower the ladder frame of the main staircase 1;

[0070] S2. At this time, the balance rod 51 is extended and retracted in the slide tube 52, so as to adapt to the height of the main staircase 1 and provide force support to the upper end of the support plate 2. The forked platform 3 and the forked staircase 4 are lowered along with the main staircase 1 until the drag reduction roller 55 contacts the floor. With the push of the push cylinder 53, the drag reduction roller 55 rolls on the floor, so that a stable support angle is formed between the forked staircase 4, the forked platform 3 and the main staircase 1.

[0071] S3. When there are many workers on the forked platform 3, in order to avoid the workers from crowding down or descending in parallel and causing safety hazards, the parallel forked stairs 4 are forked, so that the driving motor 71 installed inside the cavity opened by the forked platform 3 drives the driving screw 72 to rotate, thereby driving the adjusting screw 70 to rotate by engaging the driving worm gear 73, so that the T-shaped block 68 threadedly sleeved on the outer surface of the adjusting screw 70 moves downward, so that it drives the driving plate 66 to move downward, and then pulls the driving shaft 65 to move in the driving slide groove 67, so that it drives the two driving blocks 63 to rotate in an eight-shaped shape, and the position of the driving block 63 near the middle is also rotatably connected to the surface of the support beam 64, so that the driving block 63 can synchronously drive the forked stairs 4 on one side of the connecting platform 61 to fork, and the fork angle is 30°-45°, thereby improving safety;

[0072] S4, the bifurcated staircase 4 is tilted with one end tilted after the rotation of the driving block 63. In order to place the adjusted bifurcated staircase 4 stably and conveniently for the staff to pass through, the connecting platform 61 is controlled to rotate to the horizontal under the monitoring of the inclination sensor 85, so that the drag reduction roller 55 of the bifurcated staircase 4 contacts the ground for support, and then the reduction motor 83 drives the rotating worm 84 to rotate, so that the meshing rotating worm gear 82 drives the support shaft 62 on the connecting platform 61 to rotate, thereby controlling the bifurcated staircase 4 to rotate until the tilted drag reduction roller 55 contacts the floor, and the bifurcated staircase 4 is horizontal. At this time, the gap between the two bifurcated staircases 4 from top to bottom gradually increases, thereby playing a role of diversion;

[0073] S5. When the support shaft 62 rotates, it drives the locking gear 87 to rotate. After the adjustment is completed, the support shaft 62 is prevented from rotating and causing angle deviation, which may lead to safety hazards. When the locking gear 87 does not rotate, the telescopic cylinder 92 in the locking cavity 86 is actuated to make its piston rod pull the linkage shaft 93, thereby making the two connecting blocks 90 slide closer to each other in the through hole 91 until the locking block 89 holds the locking gear 87 tightly, so that the adjusted forked staircase 4 is in a locked state. When the building staircase is stored, the forked staircase 4 is reset after forking, and then moved away together with the main staircase 1 after parallel operation.

[0074] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A staircase bifurcation device for a building staircase, comprising a main staircase (1), characterized in that: The upper and lower surfaces of the main staircase (1) are respectively hingedly connected to support plates (2) via hinged plates; a side surface of the support plate (2) at the lower end is fixedly connected to a bifurcated platform (3); the surfaces of the support plates (2) at both ends are provided with height adjustment mechanisms (5); two groups of bifurcated stairs (4) are provided at the free ends of the bifurcated platforms (3); the rear surfaces of the bifurcated stairs (4) are provided with angle adjustment mechanisms (8); and the lower surface of the bifurcated platform (3) is provided with a bifurcated mechanism (6); The height adjustment mechanism (5) adjusts the placement angle of the main staircase (1) so that the free end of the bifurcated staircase (4) contacts the ground; Wherein, the bifurcated mechanism (6) opens the two parallel groups of bifurcated stairs (4) so ​​that an angle is formed between the two groups of bifurcated stairs (4); The bifurcated mechanism (6) comprises a connecting platform (61) fixedly connected to the rear surface of the bifurcated staircase (4), a side surface of the connecting platform (61) being rotatably connected to a support shaft (62), and a free end outer surface of the support shaft (62) being rotatably connected to a driving block (63); The bifurcated mechanism (6) further comprises a support beam (64) symmetrically distributed and fixedly connected to the lower surface of the bifurcated platform (3); one side surface of the driving block (63) is rotatably connected to one side surface of the supporting beam (64) via a rotating shaft; and a driving shaft (65) is fixedly connected to a corner of one side surface of the driving block (63) close to the supporting beam (64); The bifurcated mechanism (6) further comprises a driving plate (66) slidably connected to a side surface of the support beam (64); a driving slide groove (67) is symmetrically distributed on a side surface of the driving plate (66); an outer surface of the driving shaft (65) is slidably engaged with an inner wall of the driving slide groove (67); The bifurcated mechanism (6) further comprises a T-shaped block (68) fixedly connected to a surface of one side of the driving plate (66); a guide groove (69) is provided on the surface of the support beam (64); both end surfaces of the T-shaped block (68) are slidably engaged with the inner wall of the guide groove (69); an adjusting screw (70) is rotatably connected to the lower surface of the bifurcated platform (3); and the T-shaped block (68) is threadedly sleeved on the outer surface of the adjusting screw (70); The bifurcated platform (3) is provided with a driving motor (71) via a cavity provided inside the bifurcated platform (3); the outer surface of the output shaft of the driving motor (71) is fixedly connected to a driving screw (72); the outer surface of the adjusting screw (70) extending to the inside of the cavity is fixedly sleeved with a driving worm gear (73); the adjusting screw (70) is meshed with the driving worm gear (73); Wherein, the angle adjustment mechanism (8) levels the adjusted bifurcated staircase (4) to enable walking; The angle adjustment mechanism (8) comprises a driving cavity (81) provided inside the driving block (63); the outer surface of the support shaft (62) extending into the driving cavity (81) is fixedly sleeved with a rotating worm wheel (82); a reduction motor (83) is fixedly connected to one side surface of the driving block (63); an output shaft of the reduction motor (83) extends into the outer surface of the driving cavity (81) and is fixedly connected to a rotating worm (84) via a coupling; the rotating worm (84) meshes with the rotating worm wheel (82); and the other side surface of the driving block (63) is fixedly connected to an inclination sensor (85).

2. A staircase bifurcation device for building stairs according to claim 1, characterized in that: The height adjustment mechanism (5) comprises a balance rod (51) hingedly connected to a side surface of the lower support plate (2) via a hinge plate, and a slide cylinder (52) is fixedly connected to a side surface of the upper support plate (2), and the outer surface of the balance rod (51) is slidably sleeved with the inner wall of the slide cylinder (52).

3. A staircase bifurcation device for building stairs according to claim 2, characterized in that: The height adjustment mechanism (5) further comprises a pushing cylinder (53) hingedly connected to a side surface of the upper support plate (2); a pushing plate (54) is movably mounted on a side surface of the ladder frame of the main staircase (1); a piston rod surface of the pushing cylinder (53) is hingedly connected to a side surface of the pushing plate (54); and a drag-reducing roller (55) is mounted on a free end surface of the bifurcated staircase (4).

4. A staircase bifurcation device for building stairs according to claim 3, characterized in that: The angle adjustment mechanism (8) further comprises a locking cavity (86) provided inside the driving block (63); the outer surface of the support shaft (62) extending into the locking cavity (86) is fixedly sleeved with a locking gear (87); the inner bottom wall and the inner top wall of the locking cavity (86) are respectively fixedly connected with a guide rod (88) having a guide groove (69); two locking blocks (89) are slidably engaged between the two guide rods (88); the outer surfaces of the two locking blocks (89) are slidably engaged with the outer surface of the locking gear (87); The locking block (89) is connected to a connecting block (90) on its lower surface, a through hole (91) is formed through the surface of the guide rod (88) at the lower end, and the outer surface of the connecting block (90) is connected to the inner wall of the through hole (91) by sliding engagement, the lower surface of one of the connecting blocks (90) is connected to a telescopic cylinder (92), the lower surface of the other connecting block (90) is connected to a linkage shaft (93), and the piston rod surface of the telescopic cylinder (92) is connected to a side surface of the linkage shaft (93) on its upper surface.

5. A bifurcation method for the stair bifurcation device for building stairs according to claim 4, comprising the following steps: S1. Lowering the building staircase according to the height between the construction platform and the building floor, thereby pushing the push plate (54) through the piston rods of the two push cylinders (53), and then lowering the ladder frame of the main staircase (1); S2, at this time, the balance rod (51) is extended and retracted in the slide tube (52), thereby adapting to the height of the main staircase (1) and providing force support to the upper end of the support plate (2), and the bifurcated platform (3) and the bifurcated staircase (4) are lowered along with the main staircase (1) until the drag reduction roller (55) contacts the floor, and along with the push of the push cylinder (53), the drag reduction roller (55) rolls on the floor, so that a stable support angle is formed between the bifurcated staircase (4), the bifurcated platform (3) and the main staircase (1); S3. When there are many workers on the bifurcated platform (3), in order to avoid the workers from descending in a crowded manner or descending in parallel to cause a safety hazard, the parallel bifurcated stairs (4) are bifurcated, so that the driving motor (71) installed in the cavity opened by the bifurcated platform (3) drives the driving screw (72) to rotate, thereby driving the adjusting screw (70) to rotate by engaging the driving worm gear (73), so that the T-shaped block (68) threadedly sleeved on the outer surface of the adjusting screw (70) moves downward, so that it drives the driving plate (66) to move downward, and then pulls the driving shaft (65) to move in the driving slide groove (67), so that it drives the two driving blocks (63) to rotate in an eight-shaped shape, and the position of the driving block (63) near the middle is also rotatably connected to the surface of the support beam (64), so that the driving block (63) can synchronously drive the bifurcated stairs (4) on one side of the connecting platform (61) to bifurcate, and the bifurcation angle is 30°-45°, thereby improving safety; S4, the bifurcated staircase (4) is tilted as the driving block (63) rotates, and one end is tilted. In order to place the adjusted bifurcated staircase (4) stably and conveniently for workers to pass through, the connecting platform (61) is controlled to rotate to a horizontal position under the monitoring of the inclination sensor (85), so that the drag reduction roller (55) of the bifurcated staircase (4) contacts the ground for support, and then the rotating worm (84) is driven to rotate by the reduction motor (83), so that the supporting shaft (62) on the connecting platform (61) is driven to rotate through the meshing rotating worm gear (82), thereby controlling the bifurcated staircase (4) to rotate until the tilted drag reduction roller (55) contacts the floor, and the bifurcated staircase (4) is horizontal. At this time, the gap between the two bifurcated staircases (4) from top to bottom gradually increases, thereby playing a diversion role; S5. When the support shaft (62) rotates, the locking gear (87) is driven to rotate. After the adjustment is completed, the support shaft (62) is prevented from rotating and causing an angle deviation, which may lead to a safety hazard. When the locking gear (87) does not rotate, the telescopic cylinder (92) in the locking cavity (86) is actuated, so that its piston rod pulls the linkage shaft (93), thereby causing the two connecting blocks (90) to slide relatively close in the through hole (91) until the locking block (89) holds the locking gear (87) tightly, so that the adjusted bifurcated staircase (4) is in a locked state. When the building staircase is stored, the bifurcated staircase (4) is reset after bifurcation, and then moved away together with the main staircase (1) after parallel connection.

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