An installation device for prefabricated stairs and its usage method

Abstract

This application discloses an installation device and its usage method for prefabricated stairs, belonging to the field of prefabricated building technology. It includes an installation block, a steel ladder frame mounted on the installation block, and multiple unit treads mounted on the steel ladder frame. Each unit tread has a fixing screw installed at both ends. Multiple fixing plates are fixedly connected to the steel ladder frame, with each fixing plate corresponding to a fixing screw. The fixing plates have fixing holes for the fixing screws to pass through. The sides of the fixing plates away from the unit treads can abut against the installation block. Multiple fixing sleeves are installed on the installation block, allowing the fixing screws to pass through. Hexagonal nuts are slidably installed inside the fixing sleeves, and these nuts can thread-fit the fixing screws. A worm gear is fixedly fitted on each fixing sleeve. A worm is installed inside the installation block, meshing with the worm gear. A rotating motor is installed on the end of the worm away from the worm gear, and the worm is mounted on the output shaft of the rotating motor. This application improves the installation efficiency of prefabricated stairs.

Description

Technical Field

[0001] This application relates to the field of prefabricated building technology, and in particular to an installation device for prefabricated stairs and a method for using the same. Background Technology

[0002] Precast stairs, also known as cast-in-place reinforced concrete stairs, refer to stairs in which the stair sections, platforms, and platform beams are cast as a single unit on-site. Compared to traditional stairs, precast concrete stairs eliminate the need for workers to construct complex frames, consider weather conditions, or spend a significant amount of time mixing and pouring concrete.

[0003] Currently, modular, lightweight prefabricated staircases "disassemble" existing traditional monolithic staircases into prefabricated unit steps and steel ladder beams, which are then transported to the site for rapid assembly. The steps are installed on the plate-type steel ladder beams via pre-embedded load-bearing bolts at the bottom. Holes are reserved at the connection points between the steel plate or channel-shaped ladder beams and the steps. The nodes between the steel ladder beams and the supporting platform are connected by bolts, and a three-way adjustment device is installed at the nodes, allowing the steel ladder beams to be freely adjusted in three directions: front, back, left, right, up, and down.

[0004] Regarding the aforementioned technologies, the inventors believe that during the installation of unit steps, operators need to place each unit step on the steel ladder beam one by one, and then tighten the bolts at the bottom of each step with a wrench to complete the installation of the unit steps, which consumes a lot of time and results in low installation efficiency of prefabricated stairs. Summary of the Invention

[0005] To improve the installation efficiency of prefabricated stairs, this application provides an installation device for prefabricated stairs and a method for using it.

[0006] In the first aspect, this application discloses an installation device for prefabricated stairs.

[0007] An installation device for a prefabricated staircase includes an installation block, a steel ladder frame mounted on the installation block, and multiple unit treads mounted on the steel ladder frame. Each unit tread has a fixing screw at both ends. Multiple fixing plates are fixedly connected to the steel ladder frame, each fixing plate corresponding to a fixing screw. The fixing plates have fixing holes for the fixing screws to pass through. The side of the fixing plate away from the unit tread can abut against the installation block. Multiple fixing sleeves are mounted on the installation block, each fixing sleeve corresponding to a fixing screw. The fixing screws can be inserted into the fixing sleeves. A hexagonal nut is slidably disposed within each fixing sleeve, and the hexagonal nut can threadedly engage with the fixing screw. A worm gear is fixedly fitted onto each fixing sleeve. A worm is mounted within the installation block, meshing with the worm gear. A rotating motor is mounted on the end of the worm away from the worm gear, and the worm is mounted on the output shaft of the rotating motor.

[0008] By adopting the above technical solution, the operator places the steel ladder frame on the mounting block, aligning the fixing holes with the fixing sleeves. Then, the operator places the unit treads on the fixing plate of the steel ladder frame, allowing the fixing screws to pass through the fixing holes and enter the fixing sleeves to abut against the hexagonal nuts. The operator then starts the rotating motor, which drives the worm gear to rotate through the worm shaft. The worm gear drives the hexagonal nuts to rotate through the fixing sleeves, tightening the hexagonal nuts and fixing screws, thereby fixing the unit treads to the steel ladder frame. This saves the operator the time of tightening the hexagonal nuts one by one and improves the installation efficiency of prefabricated stairs.

[0009] Preferably, a rotating rod is fixedly connected to the output shaft of the rotating motor, and a movable sleeve is slidably sleeved on the rotating rod. The movable sleeve can be sleeved on the worm gear. A limit block is fixedly connected to the inner wall of the movable sleeve. A limit groove is provided on the rotating rod for sliding cooperation with the limit block. A connecting block is installed on the inner wall of the movable sleeve. A connecting slot is provided on the worm gear for sliding cooperation with the connecting block. A drive component for driving the movable sleeve to move is provided in the mounting block.

[0010] By adopting the above technical solution, the operator uses the drive assembly to move the movable sleeve, which is then fitted onto the worm gear. At this time, the connecting block enters the connecting slot. Then, the operator rotates the motor to drive the rotating rod to rotate, which in turn drives the movable sleeve to rotate through the limit block. The movable sleeve then drives the worm gear to rotate through the connecting block, thus facilitating the operator's installation of the unit pedal. After installation, the operator uses the drive assembly to move the movable sleeve away from the worm gear, at which point the fixed sleeve stops rotating, allowing the operator to place the hexagonal nut inside the fixed sleeve for reuse.

[0011] Preferably, the driving component includes a photoelectric switch mounted on the outer wall of the mounting block, an electromagnet mounted inside the mounting block, and an iron block mounted on the movable sleeve. The photoelectric switch is electrically connected to the electromagnet, and a reset component for driving the movable sleeve away from the electromagnet is provided inside the mounting block.

[0012] By adopting the above technical solution, the operator places the unit pedal on the fixed plate of the steel ladder frame. The unit pedal blocks the photoelectric switch on the mounting block. The blocked photoelectric switch activates the electromagnet, which attracts the iron block. The movement of the iron block moves the moving sleeve, thus allowing the moving sleeve to be fitted onto the worm gear. After the hexagonal nut is tightened, the operator removes the steel ladder frame from the mounting block. At this time, the photoelectric switch is no longer blocked by the unit pedal, and the electromagnet is turned off. Then, the operator uses the reset component to move the moving sleeve away from the electromagnet. At this time, the moving sleeve is away from the worm gear, thus facilitating the operator to install new hexagonal nuts for reuse.

[0013] Preferably, the reset assembly includes a reset plate sleeved on the movable sleeve and a reset spring fixedly connected to the reset plate. The reset plate is rotatably connected to the movable sleeve. The mounting block has a reset groove for sliding cooperation with the reset plate. The end of the reset spring away from the reset plate is fixedly connected to the inner end face of the reset groove. The iron block is fixedly connected to the reset plate. The electromagnet is installed on the inner end face of the reset groove.

[0014] By adopting the above technical solution, the operator places the unit pedal on the fixed plate. The photoelectric switch is blocked, activating the electromagnet. The electromagnet drives the moving sleeve through the iron block, and the moving sleeve drives the reset plate to move. At this time, the reset spring is in a compressed state. After the unit pedal is installed, the operator removes the steel ladder frame from the mounting block. At this time, the photoelectric switch is unblocked, the electromagnet is turned off, and the reset plate moves back to its original position under the action of the reset spring. The reset plate drives the moving sleeve away from the worm gear, thereby stopping the fixed sleeve from rotating. This makes it convenient for the operator to install a new hexagonal nut and reuse the mounting block to install the unit pedal.

[0015] Preferably, the connecting block is slidably disposed on the inner wall of the movable sleeve, the movable sleeve is provided with a connecting groove for sliding cooperation with the connecting block, a connecting spring is fixedly connected to the connecting block, the end of the connecting spring away from the connecting block is fixedly connected to the inner end face of the connecting groove, and an inclined surface is provided on the end of the connecting block near the worm gear.

[0016] By adopting the above technical solution, the electromagnet drives the movable sleeve to move through the iron block. The movable sleeve is fitted onto the worm gear. At this time, the connecting block enters the connecting groove under the action of the inclined plane. The connecting spring is in a compressed state. The rotating motor drives the movable sleeve to rotate through the rotating rod. The rotation of the movable sleeve causes the connecting block to slide on the outer circumference of the worm gear. When the connecting block slides to the position of the connecting slot, the connecting block is inserted into the connecting slot under the action of the connecting spring, so that the connecting sleeve can drive the worm gear to rotate, which makes it convenient for the operator to install the hexagonal nut.

[0017] Preferably, an abutment sleeve is slidably inserted inside the fixed sleeve. The abutment sleeve is a cylinder with one open end, and the open end of the abutment sleeve can abut against the hexagonal nut. The fixed screw can pass through the abutment sleeve. An abutment spring is fixedly connected to the bottom surface of the abutment sleeve. A compression sleeve is installed at the bottom of the fixed sleeve. The compression sleeve is rotatably connected to the fixed sleeve. The abutment sleeve is slidably inserted inside the compression sleeve. The end of the abutment spring away from the abutment sleeve is fixedly connected to the inner bottom surface of the compression sleeve.

[0018] By adopting the above technical solution, the operator places the unit pedal on the fixed plate, inserts the fixing screw into the fixing sleeve and abuts against the hexagonal nut. Under the gravity of the unit pedal, the hexagonal nut drives the abutting sleeve to move. The movement of the abutting sleeve causes the abutting spring to be in a compressed state. At this time, the hexagonal nut remains in abutting state with the fixing screw under the action of the abutting spring, which makes it convenient for the operator to install the hexagonal nut and the fixing screw.

[0019] Preferably, a positioning rod is provided through the inner wall of the reset slide groove, and a positioning groove for sliding cooperation with the positioning rod is formed on the inner wall of the reset slide groove. A positioning spring is fixedly connected to the positioning rod, and the end of the positioning spring away from the positioning rod is fixedly connected to the inner end face of the positioning groove. An inclined surface is provided on the end of the positioning rod that protrudes from the inner wall of the reset slide groove. A control component for driving the positioning rod to move is provided on the mounting block.

[0020] By adopting the above technical solution, the operator places the unit pedal on the corresponding fixed plate. Then, the operator uses the control component to drive the positioning rod into the positioning groove. At this time, the moving sleeve, under the action of the electromagnet, locks the worm gear, thereby causing the rotating motor to drive the worm gear to rotate, thus tightening the hexagonal nut. After the unit pedal is installed, the operator removes the steel ladder frame from the mounting block. At this time, the reset plate moves back to its original position under the action of the reset spring, and the positioning rod enters the positioning groove under the action of the inclined plane. After the reset plate is reset, the positioning rod pops out of the positioning groove under the action of the positioning spring, thus fixing the reset plate and preventing the worm gear from driving the fixed sleeve to rotate when the operator installs the hexagonal nut, making it convenient for the operator to install new hexagonal nuts for continued use.

[0021] Preferably, the control component includes a control gear rotatably mounted in the mounting block and a control rack slidably passing through the mounting block, the control gear meshing with the control rack, the positioning rod having teeth that mesh with the control gear, and an adjustment component for driving the control rack to move being provided in the mounting block.

[0022] By adopting the above technical solution, the operator uses the adjustment component to drive the control rack to move, the control rack to move, the control gear to rotate, and the control gear to rotate, which in turn drives the positioning rod into the positioning groove, thereby releasing the fixed state of the moving sleeve and making it convenient for the operator to drive the worm gear to rotate.

[0023] Preferably, the adjustment assembly includes an adjustment airbag fixedly connected to the control rack, an air tube installed on the adjustment airbag, a control groove for sliding cooperation with the control rack in the mounting block, the end of the adjustment airbag away from the control rack being fixedly connected to the inner end face of the control groove, the air tube communicating with the adjustment airbag, and the end of the air tube away from the adjustment airbag communicating with the inner bottom surface of the compression sleeve.

[0024] By adopting the above technical solution, the operator places the unit pedal on the fixed plate, so that the fixing screw abuts against the hexagonal nut. Under the gravity of the unit pedal, the hexagonal nut drives the abutting sleeve to move. The movement of the abutting sleeve allows air between the abutting sleeve and the compression sleeve to enter the regulator bladder through the air pipe. The expansion and deformation of the regulating bladder drives the control rack to move, thereby releasing the positioning rod from the fixed state of the reset plate, making it convenient for the operator to drive the worm gear to rotate. When the hexagonal nut is tightened, the fixing screw extends into the abutting sleeve, at which point the abutting sleeve resets, allowing air from the regulator bladder to enter between the abutting sleeve and the compression sleeve, facilitating repeated use by the operator.

[0025] Secondly, this application also discloses a method for using an installation device for prefabricated stairs.

[0026] A method of using a prefabricated staircase installation device, applied to the installation device, includes the following steps:

[0027] S1. Installation preparation: Place the hexagonal nut inside the fixing sleeve, place the steel ladder frame on the mounting block, and start the rotating motor; S2. Install unit pedals: Place the unit pedals one by one from bottom to top on the corresponding fixing plate, so that the fixing screws pass through the fixing holes and are inserted into the fixing sleeve; S3. Remove the steel ladder frame: Remove the steel ladder frame and install it between floors.

[0028] By adopting the above technical solution, the operator places the hexagonal nut into the rotating sleeve, places the steel ladder frame on the mounting block, aligns the fixing hole with the fixing sleeve, and then places the unit pedals one by one on the corresponding fixing plate from bottom to top, so that the fixing screw is inserted through the fixing hole into the fixing sleeve. The fixing screw abuts against the hexagonal nut, and the hexagonal nut, under the action of the unit pedal's gravity, drives the abutting sleeve to squeeze the air in the fixing sleeve, thereby causing the positioning rod to enter the positioning groove and release the fixed state of the reset plate. The unit pedal blocks the photoelectric switch, thereby activating the electromagnet. The electromagnet drives the moving sleeve to be fitted onto the worm gear through the iron block. The rotating motor drives the worm gear to rotate through the moving sleeve, and the worm gear drives the hexagonal nut to rotate through the fixing sleeve. The hexagonal nut is tightened to fix the unit pedal to the fixing plate. The operator removes the steel ladder frame from the mounting block and installs it between floors. The operator repeats the above operation to continue installing the unit pedals.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. The operator places the steel ladder frame on the mounting block, aligning the fixing holes with the fixing sleeves. Then, the operator places the unit treads on the fixing plate of the steel ladder frame, allowing the fixing screws to pass through the fixing holes and enter the fixing sleeves to abut against the hexagonal nuts. The operator then starts the rotating motor, which drives the worm gear to rotate through the worm shaft. The worm gear drives the hexagonal nuts to rotate through the fixing sleeves, tightening the hexagonal nuts and fixing screws, thus fixing the unit treads to the steel ladder frame. This saves the operator time of tightening the hexagonal nuts one by one and improves the installation efficiency of prefabricated stairs.

[0031] 2. The operator places the unit pedal on the corresponding fixed plate. Then, the operator uses the control component to drive the positioning rod into the positioning groove. At this time, the moving sleeve, under the action of the electromagnet, locks the worm gear, causing the rotating motor to drive the worm gear to rotate, thereby tightening the hexagonal nut. After the unit pedal is installed, the operator removes the steel ladder frame from the mounting block. At this time, the reset plate moves back to its original position under the action of the reset spring. The positioning rod enters the positioning groove under the action of the inclined plane. After the reset plate is reset, the positioning rod pops out of the positioning groove under the action of the positioning spring, thereby fixing the reset plate and preventing the worm gear from driving the fixed sleeve to rotate when the operator installs the hexagonal nut. This makes it convenient for the operator to install new hexagonal nuts for continued use.

[0032] 3. The operator places the hexagonal nut into the rotating sleeve, places the steel ladder frame on the mounting block, aligns the fixing hole with the fixing sleeve, and then places the unit pedals one by one from bottom to top onto the corresponding fixing plate, so that the fixing screw passes through the fixing hole and is inserted into the fixing sleeve. The fixing screw abuts against the hexagonal nut. Under the weight of the unit pedal, the hexagonal nut drives the abutting sleeve to compress the air inside the fixing sleeve, thereby causing the positioning rod to enter the positioning groove and release the fixing state of the reset plate. The unit pedal blocks the photoelectric switch, thereby activating the electromagnet. The electromagnet drives the moving sleeve to be fitted onto the worm gear through the iron block. The rotating motor drives the worm gear to rotate through the moving sleeve, and the worm gear drives the hexagonal nut to rotate through the fixing sleeve. The hexagonal nut is tightened to fix the unit pedal to the fixing plate. The operator removes the steel ladder frame from the mounting block and installs it between floors. The operator repeats the above operation to continue installing the unit pedals. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of an installation device for a prefabricated staircase according to an embodiment of this application.

[0034] Figure 2 This is a schematic diagram of the internal structure of an installation device for a prefabricated staircase according to an embodiment of this application.

[0035] Figure 3 This is a structural schematic diagram of the steel ladder frame according to an embodiment of this application.

[0036] Figure 4 yes Figure 2 Enlarged diagram of point A in the middle.

[0037] Figure 5 This is a schematic diagram of the structure of the mounting block according to an embodiment of this application.

[0038] Figure 6 This is a schematic diagram of the internal structure of the mounting block in an embodiment of this application.

[0039] Figure 7 yes Figure 6 Enlarged diagram of point A in the middle.

[0040] Figure 8 This is a schematic diagram of the internal structure of the movable sleeve according to an embodiment of this application.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Mounting block; 11. Fixing sleeve; 111. Abutting sleeve; 112. Abutting spring; 113. Compression sleeve; 12. Hex nut; 13. Worm gear; 14. Worm; 141. Connecting slot; 15. Rotating motor; 16. Rotating rod; 161. Limiting groove; 17. Moving sleeve; 171. Limiting block; 172. Connecting block; 173. Connecting groove; 174. Connecting spring; 2. Steel ladder frame; 21. Unit step; 22. 1. Fixing screw; 23. Fixing plate; 24. Fixing hole; 3. Drive assembly; 31. Photoelectric switch; 32. Electromagnet; 33. Iron block; 4. Reset assembly; 41. Reset plate; 42. Reset spring; 43. Reset slide; 44. Positioning rod; 45. Positioning slide; 46. Positioning spring; 5. Control assembly; 51. Control gear; 52. Control rack; 53. Control slide; 6. Adjustment assembly; 61. Adjusting airbag; 62. Air tube. Detailed Implementation

[0043] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0044] This application discloses an installation device for prefabricated stairs. (Refer to...) Figure 1 The installation device includes a mounting block 1 and a steel ladder frame 2. The mounting block 1 is vertically arranged, and the steel ladder frame 2 is set on the mounting block 1. The steel ladder frame 2 is inclined and has multiple unit steps 21.

[0045] Reference Figure 1 , Figure 2The unit pedal 21 is horizontally positioned and is made of two rectangular concrete slabs. The two concrete slabs are perpendicular to each other and are fixedly connected at their adjacent sides. Multiple fixing screws 22 are fixedly connected to the bottom surface of the unit pedal 21. The fixing screws 22 are vertically positioned at both ends of the unit pedal 21, with two fixing screws 22 at each end.

[0046] Reference Figure 3 , Figure 4 Multiple fixing plates 23 are fixedly connected to the inner wall of the steel ladder frame 2. The fixing plates 23 are rectangular plates, horizontally arranged, and fixedly connected to the steel ladder frame 2. Each fixing plate 23 corresponds to a fixing screw 22. Fixing holes 24 are provided on the fixing plates 23 for the fixing screws 22 to pass through. A hexagonal nut 12 is provided on the side of the fixing plate 23 away from the unit pedal 21. Multiple hexagonal nuts 12 are provided, each corresponding to a fixing screw 22. The hexagonal nuts 12 are fitted onto the fixing screws 22 and are threaded together. The side wall of the hexagonal nut 12 near the unit pedal 21 has a bevel.

[0047] Reference Figure 4 , Figure 5 A fixed sleeve 11 is slidably fitted onto a hexagonal nut 12. The fixed sleeve 11 is vertically positioned and is a cylindrical shape with an open top. The fixed sleeve 11 passes through the mounting block 1 and is rotatably connected to the mounting block 1. A worm gear 13 is provided on the fixed sleeve 11. The worm gear 13 is horizontally positioned and is fitted onto the fixed sleeve 11, and the worm gear 13 is fixedly connected to the fixed sleeve 11.

[0048] Reference Figure 6 , Figure 7 A worm gear 14 is mounted on the mounting block 1. The worm gear 14 is horizontally positioned and rotatably connected to the mounting block 1. The worm gear 14 meshes with a worm wheel 13 on the same side. A rotary motor 15 is mounted on the end of the worm gear 14 away from the worm wheel 13. The rotary motor 15 is installed inside the mounting block 1. A rotating rod 16 is fixedly connected to the output shaft of the rotary motor 15. The axis of the rotating rod 16 coincides with the axis of the output shaft of the rotary motor 15, and the axis of the rotating rod 16 coincides with the axis of the worm gear 14.

[0049] Reference Figure 7 , Figure 8A movable sleeve 17 is provided on the rotating rod 16. The movable sleeve 17 is horizontally positioned and located between the rotating rod 16 and the worm gear 14. The movable sleeve 17 is slidably sleeved on the rotating rod 16 and can be sleeved on the worm gear 14. A limit block 171 is provided on the inner wall of the movable sleeve 17 and is fixedly connected to the inner wall of the movable sleeve 17. A limit groove 161 is formed on the rotating rod 16 along the length direction of the rotating rod 16. The inner wall of the limit groove slides and engages with the outer wall of the limit block 171.

[0050] Reference Figure 8 A connecting block 172 is provided on the end of the movable sleeve 17 away from the limiting block 171. The connecting block 172 slides through the inner wall of the movable sleeve 17. A connecting groove 173 is provided on the inner wall of the movable sleeve 17 for sliding cooperation with the connecting block 172. An inclined surface is provided on the end of the connecting block 172 that extends out of the connecting groove 173. A connecting spring 174 is provided on the connecting block 172. The connecting spring 174 is vertically arranged. One end of the connecting spring 174 is fixedly connected to the connecting block 172, and the other end of the connecting spring 174 is fixedly connected to the inner end face of the connecting groove 173.

[0051] Reference Figure 8 A connecting slot 141 is provided on the worm 14, and the connecting slot 141 is located on the outer peripheral surface of the worm 14, extending along the length of the worm 14. Multiple connecting slots 141 are evenly arranged around the axis of the worm 14, and the inner wall of the connecting slot 141 communicates with the end face of the worm 14 near the rotating rod 16. The inner wall of the connecting slot 141 slides in engagement with the outer wall of the connecting block 172.

[0052] Reference Figure 5 , Figure 7 The mounting block 1 contains a drive assembly 3 for moving the movable sleeve 17. The drive assembly 3 includes a photoelectric switch 31, an electromagnet 32, and an iron block 33. Multiple photoelectric switches 31 are provided, each corresponding to a unit pedal 21. The photoelectric switches 31 are positioned between the fixed plates 23 and are fixedly connected to the outer wall of the mounting block 1. Multiple electromagnets 32 are installed within the mounting block 1, each corresponding to a worm gear 14. The electromagnets 32 are electrically connected to the photoelectric switches 31. The iron block 33 is mounted on the movable sleeve 17.

[0053] The operator places the unit pedal 21 on the fixed plate 23 of the steel ladder frame 2. The unit pedal 21 blocks the photoelectric switch 31 on the mounting block 1. The photoelectric switch 31 is blocked and activates the electromagnet 32. The electromagnet 32 ​​attracts the iron block 33. The iron block 33 moves and drives the moving sleeve 17 to move. The moving sleeve 17 is fitted onto the worm gear 14. At this time, the connecting block 172 enters the connecting groove 173 under the action of the inclined plane. The connecting spring 174 is in a compressed state. The rotating motor 15 drives the rotating rod 16 to rotate. The rotating rod 16 drives the moving sleeve 17 to rotate through the limit block 171. The moving sleeve 17 rotates. The connecting block 172 slides on the outer circumferential surface of the worm gear 14. When the connecting block 172 slides to the position of the connecting slot 141, the connecting block 172 is inserted into the connecting slot 141 under the action of the connecting spring 174, so that the connecting sleeve can drive the worm gear 14 to rotate. The worm gear 14 drives the fixed sleeve 11 to rotate through the worm wheel 13. The rotation of the fixed sleeve 11 drives the hexagonal nut 12 to rotate. The hexagonal nut 12 is tightened with the fixed screw 22, thereby fixing the unit tread 21 to the steel ladder frame 2. This saves the time of operators tightening the hexagonal nuts 12 one by one and improves the installation efficiency of the prefabricated stairs.

[0054] Reference Figure 7 The mounting block 1 is equipped with a reset assembly 4 for driving the movable sleeve 17 away from the electromagnet 32. The reset assembly 4 includes a reset plate 41 and a reset spring 42. The reset plate 41 is vertically arranged and sleeved on the movable sleeve 17. The reset plate 41 and the movable sleeve 17 are rotatably connected. The iron block 33 is installed on the reset plate 41. The mounting block 1 is equipped with a reset groove 43, and the inner side wall of the reset groove 43 slides and engages with the outer side wall of the reset plate 41. The reset spring 42 is horizontally arranged and is located in the reset groove 43. One end of the reset spring 42 is fixedly connected to the reset plate 41, and the other end of the reset spring 42 is fixedly connected to the inner end face of the reset groove 43.

[0055] Reference Figure 7 A positioning rod 44 is slidably inserted through the inner wall of the reset slide groove 43. The positioning rod 44 is vertically arranged, and the end of the positioning rod 44 that protrudes from the inner wall of the reset slide groove 43 has an inclined surface, which can abut against the side wall of the reset plate 41. A positioning slide groove 45 is formed on the inner wall of the reset slide groove 43, and the inner wall of the positioning slide groove 45 slides and engages with the side wall of the positioning rod 44. A positioning spring 46 is provided on the positioning rod 44. One end of the positioning spring 46 is fixedly connected to the positioning rod 44, and the other end of the positioning spring 46 is fixedly connected to the inner end face of the positioning slide groove 45.

[0056] The operator places the unit pedal 21 on the fixed plate 23. The photoelectric switch 31 is blocked, activating the electromagnet 32. The electromagnet 32 ​​drives the moving sleeve 17 to move through the iron block 33. The moving sleeve 17 moves the reset plate 41. At this time, the reset spring 42 is in a compressed state. After the unit pedal 21 is installed, the operator removes the steel ladder frame 2 from the mounting block 1. At this time, the photoelectric switch 31 is unblocked, the electromagnet 32 ​​is turned off, and the reset plate 41 is reset and moved under the action of the reset spring 42. The reset plate 41 drives the moving sleeve 17 away from the worm gear 14, thereby stopping the fixed sleeve 11 from rotating, making it convenient for the operator to install a new hexagonal nut 12 and reuse the mounting block 1 to install the unit pedal 21.

[0057] Reference Figure 7 The mounting block 1 is equipped with a control component 5 for driving the positioning rod 44 to move. The control component 5 includes a control gear 51 and a control rack 52. The control gear 51 is vertically arranged and rotatably mounted inside the mounting block 1. The positioning rod 44 has teeth, and the control gear 51 meshes with the teeth on the positioning rod 44. The control rack 52 is vertically arranged and slidably passes through the mounting block 1. The mounting block 1 has a sliding groove for sliding cooperation with the control rack 52, and the control rack 52 meshes with the control gear 51.

[0058] Reference Figure 4 , Figure 7 The mounting block 1 is equipped with an adjustment assembly 6 for driving the movement of the control rack 52. The adjustment assembly 6 includes an adjustment airbag 61 and an air tube 62. The adjustment airbag 61 is vertically arranged and located within the control slide groove 53. One end of the adjustment airbag 61 is fixedly connected to the control rack 52, and the other end of the adjustment airbag 61 is fixedly connected to the inner end face of the control slide groove 53. The air tube 62 is installed within the mounting block 1 and communicates with the adjustment airbag 61. A compression sleeve 113 is installed on the end of the air tube 62 away from the adjustment airbag 61.

[0059] Reference Figure 4 The compression sleeve 113 is vertically arranged and is a cylindrical tube with an open top. The compression sleeve 113 is located at the bottom of the fixed sleeve 11 and is rotatably connected to the fixed sleeve 11. The inner bottom surface of the compression sleeve 113 is connected to the inner wall of the air pipe 62. An abutment sleeve 111 is slidably inserted inside the compression sleeve 113. The abutment sleeve 111 is a cylindrical tube with an open top, and its outer circumferential surface slides and engages with the inner side wall of the compression sleeve 113.

[0060] Reference Figure 4The outer circumferential surface of the abutment sleeve 111 can slide and engage with the inner sidewall of the fixed sleeve 11. The top of the abutment sleeve 111 can abut with the hexagonal nut 12. An abutment spring 112 is provided on the bottom surface of the abutment sleeve 111. The abutment spring 112 is vertically arranged, one end of the abutment spring 112 is fixedly connected to the abutment sleeve 111, and the other end of the abutment spring 112 is fixedly connected to the inner end face of the compression sleeve 113.

[0061] The operator places the unit pedal 21 on the fixed plate 23, so that the fixing screw 22 abuts against the hexagonal nut 12. Under the gravity of the unit pedal 21, the hexagonal nut 12 drives the abutment sleeve 111 to move. The movement of the abutment sleeve 111 causes the air between the abutment sleeve 111 and the compression sleeve 113 to enter the regulator bladder through the air pipe 62. The regulating air bladder 61 expands and deforms, driving the control rack 52 to move. The control rack 52 drives the positioning rod 44 into the positioning slide groove 45 through the control gear 51. At this time, the positioning spring 46 is in a compressed state, thereby releasing the positioning rod 44 from the fixed state of the reset plate 41, making it convenient for the operator to rotate the fixed sleeve 11 to install the hexagonal nut 12.

[0062] When the hexagonal nut 12 is tightened, the fixing screw 22 extends into the abutment sleeve 111, at which point the abutment sleeve 111 resets, allowing air from the regulator bladder to enter between the abutment sleeve 111 and the compression sleeve 113. The regulating air bladder 61 deforms, causing the positioning rod 44 to pass through the inner wall of the reset groove 43 under the action of the positioning spring 46. The operator removes the steel ladder frame 2 from the mounting block 1 and installs it between floors. The photoelectric switch 31 is not obstructed, causing the electromagnet 32 ​​to close. The reset plate 41 resets and moves under the action of the reset spring 42. The positioning rod 44 enters the positioning groove 45 under the action of the inclined plane. After the reset plate 41 resets, the positioning rod 44 pops out of the positioning groove 45 under the action of the positioning spring 46, thus fixing the reset plate 41 and preventing the worm gear 14 from rotating the fixing sleeve 11 when the operator installs the hexagonal nut 12. This facilitates the operator to install new hexagonal nuts 12 for repeated use.

[0063] The implementation principle of the installation device for a prefabricated staircase in this embodiment is as follows: The operator first places the hexagonal nut 12 into the rotating sleeve, then places the steel ladder frame 2 on the installation block 1. The operator aligns the fixing hole 24 with the fixing sleeve 11. Next, the operator places the unit treads 21 one by one from bottom to top onto the corresponding fixing plates 23, so that the fixing screw 22 passes through the fixing hole 24 and is inserted into the fixing sleeve 11. The fixing screw 22 abuts against the hexagonal nut 12, and under the weight of the unit treads 21, the hexagonal nut 12 drives the abutting sleeve 111 to compress the cavity inside the fixing sleeve 11. The air is released, causing the positioning rod 44 to enter the positioning groove 45 and release the fixed state of the reset plate 41. The unit pedal 21 blocks the photoelectric switch 31, thereby activating the electromagnet 32. The electromagnet 32 ​​drives the moving sleeve 17 to be fitted onto the worm gear 14 through the iron block 33. The rotating motor 15 drives the worm gear 14 to rotate through the moving sleeve 17. The worm gear 14 drives the hexagonal nut 12 to rotate through the fixed sleeve 11. The hexagonal nut 12 is tightened, thereby fixing the unit pedal 21 to the steel ladder frame 2. This saves the time of operators tightening the hexagonal nuts 12 one by one and improves the installation efficiency of the prefabricated stairs.

[0064] Tightening the hexagonal nut 12 causes the abutment sleeve 111 to reset under the action of the abutment spring 112, thereby compressing and deforming the adjusting airbag 61. The deformation of the adjusting airbag 61 causes the positioning rod 44 to pass through the inner wall of the reset slide groove 43 under the action of the positioning spring 46. The operator removes the steel ladder frame 2 from the mounting block 1 and installs it between floors. The photoelectric switch 31 is not blocked, so the electromagnet 32 ​​is turned off. The reset plate 41 is reset under the action of the reset spring 42 and fixed by the positioning rod 44, thus making it convenient for the operator to install new hexagonal nuts 12 for repeated use.

[0065] This application also discloses a method for using a prefabricated staircase installation device to achieve the use of the above-mentioned installation device.

[0066] Reference Figure 1-8 A method of using an installation device for prefabricated stairs includes the following steps:

[0067] S1. Installation preparation: The operator puts the hexagonal nut 12 into the rotating sleeve, then the operator places the steel ladder frame 2 on the mounting block 1, aligns the fixing hole 24 with the fixing sleeve 11, and starts the rotating motor 15.

[0068] S2. Install unit pedal 21: The operator places the unit pedal 21 one by one on the corresponding fixing plate 23 from bottom to top, so that the fixing screw 22 is inserted through the fixing hole 24 and inserted into the fixing sleeve 11. The photoelectric switch 31 activates the electromagnet 32, so that the rotating motor 15 drives the fixing sleeve 11 to rotate and tighten the hexagonal nut 12.

[0069] S3. Remove steel ladder frame 2: The operator removes the steel ladder frame 2 from the mounting block 1 and installs it between floors.

[0070] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An installation device for a prefabricated staircase, comprising an installation block (1), a steel ladder frame (2) disposed on the installation block (1), and a plurality of unit treads (21) disposed on the steel ladder frame (2), characterized in that: Both ends of the unit pedal (21) are equipped with fixing screws (22). Multiple fixing plates (23) are fixedly connected to the steel ladder frame (2). Each fixing plate (23) corresponds to one fixing screw (22). Fixing holes (24) are provided on the fixing plates (23) for the fixing screws (22) to pass through. The side of the fixing plate (23) away from the unit pedal (21) can abut against the mounting block (1). Multiple fixing sleeves (11) are provided on the mounting block (1). Each fixing sleeve (11) corresponds to one fixing screw (22). A fixing screw (22) can be inserted into the fixing sleeve (11). A hexagonal nut (12) is slidably disposed in the fixing sleeve (11). The hexagonal nut (12) can be threadedly engaged with the fixing screw (22). A worm gear (13) is fixedly sleeved on the fixing sleeve (11). A worm (14) is inserted into the mounting block (1). The worm (14) meshes with the worm gear (13). A rotating motor (15) is installed on the end of the worm (14) away from the worm gear (13). The worm (14) is mounted on the output shaft of the rotating motor (15).

2. The installation device for a prefabricated staircase according to claim 1, characterized in that: A rotating rod (16) is fixedly connected to the output shaft of the rotating motor (15). A movable sleeve (17) is slidably sleeved on the rotating rod (16). The movable sleeve (17) can be sleeved on the worm (14). A limiting block (171) is fixedly connected to the inner wall of the movable sleeve (17). A limiting groove (161) is provided on the rotating rod (16) for sliding cooperation with the limiting block (171). A connecting block (172) is installed on the inner wall of the movable sleeve (17). A connecting slot (141) is provided on the worm (14) for sliding cooperation with the connecting block (172). A driving component (3) for driving the movable sleeve (17) to move is provided in the mounting block (1).

3. The installation device for a prefabricated staircase according to claim 2, characterized in that: The driving assembly (3) includes a photoelectric switch (31) mounted on the outer wall of the mounting block (1), an electromagnet (32) mounted inside the mounting block (1), and an iron block (33) mounted on the movable sleeve (17). The photoelectric switch (31) is electrically connected to the electromagnet (32). The mounting block (1) is provided with a reset assembly (4) for driving the movable sleeve (17) away from the electromagnet (32).

4. The installation device for a prefabricated staircase according to claim 3, characterized in that: The reset assembly (4) includes a reset plate (41) sleeved on the movable sleeve (17) and a reset spring (42) fixedly connected to the reset plate (41). The reset plate (41) is rotatably connected to the movable sleeve (17). The mounting block (1) is provided with a reset groove (43) for sliding cooperation with the reset plate (41). The end of the reset spring (42) away from the reset plate (41) is fixedly connected to the inner end face of the reset groove (43). The iron block (33) is fixedly connected to the reset plate (41). The electromagnet (32) is installed on the inner end face of the reset groove (43).

5. The installation device for a prefabricated staircase according to claim 2, characterized in that: The connecting block (172) is slidably inserted into the inner wall of the movable sleeve (17). The movable sleeve (17) has a connecting groove (173) for sliding cooperation with the connecting block (172). A connecting spring (174) is fixedly connected to the connecting block (172). The end of the connecting spring (174) away from the connecting block (172) is fixedly connected to the inner end face of the connecting groove (173). An inclined surface is provided on the end of the connecting block (172) near the worm (14).

6. The installation device for a prefabricated staircase according to claim 4, characterized in that: A contact sleeve (111) is slidably inserted inside the fixed sleeve (11). The contact sleeve (111) is a cylinder with one open end. The open end of the contact sleeve (111) can abut against the hexagonal nut (12). The fixed screw (22) can pass into the contact sleeve (111). A contact spring (112) is fixedly connected to the bottom surface of the contact sleeve (111). A compression sleeve (113) is installed at the bottom of the fixed sleeve (11). The compression sleeve (113) is rotatably connected to the fixed sleeve (11). The contact sleeve (111) is slidably inserted inside the compression sleeve (113). The end of the contact spring (112) away from the contact sleeve (111) is fixedly connected to the inner bottom surface of the compression sleeve (113).

7. The installation device for a prefabricated staircase according to claim 6, characterized in that: A positioning rod (44) is provided on the inner wall of the reset slide groove (43). A positioning slide groove (45) is provided on the inner wall of the reset slide groove (43) for sliding cooperation with the positioning rod (44). A positioning spring (46) is fixedly connected to the positioning rod (44). The end of the positioning spring (46) away from the positioning rod (44) is fixedly connected to the inner end face of the positioning slide groove (45). An inclined surface is provided on the end of the positioning rod (44) that protrudes from the inner wall of the reset slide groove (43). A control component (5) for driving the positioning rod (44) to move is provided on the mounting block (1).

8. The installation device for a prefabricated staircase according to claim 7, characterized in that: The control component (5) includes a control gear (51) rotatably mounted in the mounting block (1) and a control rack (52) slidably passing through the mounting block (1). The control gear (51) meshes with the control rack (52). The positioning rod (44) is provided with teeth, and the teeth on the positioning rod (44) mesh with the control gear (51). The mounting block (1) is provided with an adjustment component (6) for driving the control rack (52) to move.

9. An installation device for a prefabricated staircase according to claim 8, characterized in that: The adjustment assembly (6) includes an adjustment airbag (61) fixedly connected to the control rack (52) and an air tube (62) installed on the adjustment airbag (61). The mounting block (1) has a control groove (53) for sliding cooperation with the control rack (52). The end of the adjustment airbag (61) away from the control rack (52) is fixedly connected to the inner end face of the control groove (53). The air tube (62) is connected to the adjustment airbag (61), and the end of the air tube (62) away from the adjustment airbag (61) is connected to the inner bottom surface of the compression sleeve (113).

10. A method of using an installation device for prefabricated stairs, applied to the installation device as described in any one of claims 1-9, characterized in that: Includes the following steps: S1. Installation preparation: Place the hexagonal nut (12) inside the fixing sleeve (11), place the steel ladder frame (2) on the mounting block (1), and start the rotating motor (15); S2, Install unit pedals (21): Place the unit pedals (21) one by one from bottom to top on the corresponding fixing plates (23), so that the fixing screws (22) are inserted through the fixing holes (24) and into the fixing sleeves (11); S3. Remove the steel ladder frame (2): Remove the steel ladder frame (2) and install it between floors.

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