Staircase operation platform with adjustable lower end

Abstract

The operating platform comprises two mounting bases, universal wheels are rotationally mounted on the two sides of the bottoms of the two mounting bases, through holes are formed in the two sides of the tops of the two mounting bases, a vertical rod is movably mounted in any one through hole, and the vertical rod is movably mounted in the other through hole. A rack is fixedly installed at the bottom end of any vertical rod, the same movable plate is fixedly installed at the top ends of the four vertical rods, a protective fence is fixedly installed at the top of the movable plate, rotating shafts are rotationally installed in the two mounting bases, and the two mounting bases are fixedly connected. The two rotating shafts are fixedly sleeved with two gears, and one ends of the two rotating shafts are fixedly sleeved with worm gears. The operating platform for the staircase with the adjustable lower end is simple in structure and convenient to use, the height of the operating platform can be conveniently and rapidly adjusted, workers can conveniently use the operating platform, the height of the operating platform can be conveniently and rapidly locked, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of operating platforms, in particular to an operating platform for stairwells with an adjustable lower end. Background Art

[0002] Stairs are components used for vertical transportation between floors in a building. They are used for transportation between floors and when there is a large height difference. Stairs must also be set up in multi-story and high-rise buildings that have elevators and escalators as the main means of vertical transportation. Although high-rise buildings use elevators as the main means of vertical transportation, stairs must still be retained for escape in case of fire. Stairs are composed of continuous steps (also called stair runs), platforms (resting platforms) and enclosing components. The horizontal projection distance between the lowest and highest steps of the stairs is the stair length, and the total height of the steps is the stair height. Therefore, it is indispensable to decorate the stairs during construction.

[0003] However, in current common construction, the decoration workers under the stair treads will make a stool with a width narrower than the depth of the stair treads out of wood, and then put the stool on the stair treads, and the workers stand on the stool to work. However, the stool made of wood is very likely to be damaged and unstable after being stepped on many times. In addition, the width of the stool is relatively narrow, which limits the movement of the workers on the stool, and it is very easy for the workers to step on empty space and fall from a high place after standing on it and moving. At the same time, the height of the stool is fixed and cannot be adjusted. Because the stair treads are inclined boards, the range of workers' work on one tread is limited, and it is necessary to move the stool many times to complete the construction of one run of stair treads. At this time, the workers will have to increase the number of steps to adjust the stool position, thereby reducing the workers' work efficiency.

[0004] Based on this, this solution proposes an operating platform for stairwells with an adjustable lower end. Utility Model Content

[0005] The purpose of the present utility model is to provide an operating platform for a stairwell with an adjustable lower end, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: an operating platform for stairwells with an adjustable lower end, comprising two mounting bases,

[0007] Universal wheels are rotatably mounted on both sides of the bottom of the two mounting bases, and through holes are opened on both sides of the top of the two mounting bases. A vertical rod is movably mounted in any through hole, and a rack is fixedly mounted on the bottom end of any vertical rod. The top ends of the four vertical rods are fixedly mounted with the same movable plate, and a guardrail is fixedly mounted on the top of the movable plate;

[0008] A rotating shaft is rotatably mounted in each of the two mounting bases and the two mounting bases are fixedly connected. Two gears are fixedly sleeved on each of the two rotating shafts, and a worm gear is fixedly sleeved on one end of each of the two rotating shafts. Any gear meshes with the corresponding rack, and a metal plate is fixedly mounted on the corresponding mounting base. A worm that meshes with the two worm gears is rotatably mounted on the metal plate.

[0009] The other ends of the two rotating shafts are fixedly sleeved with limit gears;

[0010] Two metal plates are fixedly installed on one side of the two mounting bases near the limit gear, and the same sliding rod is fixedly installed between the corresponding two metal plates. Two sliding sleeves are slidably sleeved on the two sliding rods, and a limit rack is fixedly installed on the bottom of any sliding sleeve. A locking bolt is threadedly installed on any metal plate, and one end of any locking bolt is rotatably connected to the corresponding sliding sleeve, and the other end of any locking bolt is fixedly sleeved with a knob.

[0011] Preferably, a plurality of anti-slip pads are fixedly installed on the top of the movable plate.

[0012] By adopting the above technical solution, the anti-slip property of the movable plate is increased by the anti-slip pad, thereby preventing workers from slipping.

[0013] Preferably, a ladder is fixedly mounted on one side of the movable plate.

[0014] By adopting the above technical solution, workers can easily climb onto the movable board through the ladder.

[0015] Preferably, a push rod is fixedly mounted on the corresponding mounting base.

[0016] By adopting the above technical solution, the entire device can be easily pushed to move by the push rod.

[0017] Preferably, a return spring is sleeved on any vertical rod, one end of any return spring is fixed on the corresponding vertical rod, and the other end of any return spring is fixed on the inner wall of the corresponding through hole.

[0018] By adopting the above technical solution, the vertical rod can be easily reset by the reset spring.

[0019] Preferably, one end of the worm is fixedly sleeved with a crank.

[0020] By adopting the above technical solution, the worm can be easily rotated by the crank.

[0021] Preferably, a mounting bracket is fixedly mounted on the corresponding mounting base, an adjusting motor is fixedly mounted on the mounting bracket, a bidirectional screw is fixedly sleeved on the output shaft of the adjusting motor, two hooks are threadedly sleeved on the bidirectional screw, a slide rail is fixedly mounted on the mounting bracket, two sliders are slidably mounted on the slide rail, and the two sliders are fixedly connected to the corresponding hooks respectively.

[0022] By adopting the above technical solution, the bidirectional screw is driven to rotate by starting the adjustment motor, and the bidirectional screw drives the two hooks to move left and right separately, so that the space between the two hooks can be adjusted, which is convenient for hanging construction tools of different sizes and convenient for workers to use. The two hooks are moved by the slide rail and the slider.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: the device is pushed to a suitable position by the push rod, and the worker climbs onto the movable board through the ladder. The anti-slip pad increases the anti-slip property of the movable board to prevent the worker from slipping. The worm is driven to rotate by turning the crank, and the worm drives the rotation of the two worm wheels, which can drive the rotation of the two rotating shafts, which can drive the rotation of the four gears. The four gears drive the four racks to move upward at the same time, or by turning the crank in the opposite direction, the four racks can be driven to move downward at the same time, so that the height of the movable board can be adjusted, and then the four locking knobs are driven by turning the four knobs inward to lock. When the bolts are rotated inward, the locking bolts push the corresponding sliding sleeves to move inward, which drives the corresponding limit racks to move inward, so that the limit racks are respectively engaged with the corresponding limit gears, which limits the rotation of the two limit gears, which limits the rotation of the two rotating shafts, and thus locks the height of the movable plate. Based on the self-locking property of the worm and the worm gear, the height of the movable plate is ensured to be fixed. By starting the adjustment motor to drive the rotation of the bidirectional screw rod, the bidirectional screw rod drives the two hooks to move left and right separately, and the space between the two hooks can be adjusted, making it convenient to hang construction tools of different sizes and convenient for workers to use. The utility model has a simple structure and is easy to use. The lower end of the adjustable stairwell operating platform is convenient for quickly adjusting the height of the operating platform, which is convenient for workers to use, and is convenient for quickly locking the height of the operating platform, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional diagram of the utility model;

[0025] Figure 2 This is a schematic structural diagram of Part A of the utility model;

[0026] Figure 3 It is a side perspective view of the present utility model;

[0027] Figure 4 This is a three-dimensional diagram of the internal structure of the mounting base of the present invention.

[0028] In the figure: 1. Mounting base; 2. Universal wheel; 3. Push rod; 4. Ladder; 5. Anti-slip mat; 6. Guardrail; 7. Movable plate; 8. Locking bolt; 9. Sleeve; 10. Knob; 11. Limit rack; 12. Limit gear; 13. Sliding rod; 14. Metal plate; 15. Worm; 16. Worm gear; 17. Adjustment motor; 18. Crank handle; 19. Hook; 20. Bidirectional screw; 21. Mounting frame; 22. Rotating shaft; 23. Gear; 24. Vertical rod; 25. Return spring; 26. Rack. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1-4 The utility model provides a technical solution: an operating platform for a stairwell with an adjustable lower end, comprising two mounting bases 1, universal wheels 2 being rotatably mounted on both sides of the bottom of the two mounting bases 1, and through holes being opened on both sides of the tops of the two mounting bases 1, a vertical rod 24 being movably mounted in any through hole, a rack 26 being fixedly mounted on the bottom end of any vertical rod 24, a same movable plate 7 being fixedly mounted on the top of the four vertical rods 24, a guardrail 6 being fixedly mounted on the top of the movable plate 7, a rotating shaft 22 being rotatably mounted in the two mounting bases 1, and the two mounting bases 1 being fixedly connected, two gears 23 being fixedly sleeved on the two rotating shafts 22, and a worm gear 16 being fixedly sleeved on one end of the two rotating shafts 22, any gear 23 being respectively meshed with the corresponding rack 26, and the corresponding mounting base 1 A metal plate is fixedly installed, on which a worm 15 that meshes with two worm wheels 16 at the same time is rotatably installed. One end of the worm 15 is fixedly sleeved with a crank 18, and a return spring 25 is sleeved on any vertical rod 24. One end of any return spring 25 is fixed on the corresponding vertical rod 24, and the other end of any return spring 25 is fixed on the inner wall of the corresponding through hole. Through the above-mentioned structural arrangement, by rotating the crank 18, the worm 15 is driven to rotate, and the worm 15 drives the rotation of the two worm wheels 16, which can drive the rotation of the two rotating shafts 22, and thus drive the rotation of the four gears 23. The four gears 23 drive the four racks 26 to move upward at the same time, or by rotating the crank 18 in the opposite direction, the four racks 26 can be driven to move downward at the same time, so that the height of the movable plate 7 can be adjusted.

[0031] The other ends of the two rotating shafts 22 are fixedly sleeved with the limit gear 12, and two metal plates 14 are fixedly installed on the side of the two mounting bases 1 close to the limit gear 12. The same slide rod 13 is fixedly installed between the corresponding two metal plates 14. Two slide sleeves 9 are slidably sleeved on the two slide rods 13. The bottom of any slide sleeve 9 is fixedly installed with a limit rack 11. A locking bolt 8 is threadedly installed on any metal plate 14. One end of any locking bolt 8 is rotatably connected to the corresponding slide sleeve 9, and the other end of any locking bolt 8 is fixedly sleeved. A knob 10 is connected. Through the above-mentioned structural setting, the four knobs 10 are tightened and rotated inward to drive the four locking bolts 8 to rotate inward. The locking bolts 8 push the corresponding sliding sleeves 9 to move inward, which can drive the corresponding limit racks 11 to move inward, so that the limit racks 11 are respectively engaged with the corresponding limit gears 12, thereby limiting the rotation of the two limit gears 12, limiting the rotation of the two rotating shafts 22, and locking the height of the movable plate 7. On the basis of the self-locking property of the worm 15 and the worm wheel 16, the height of the movable plate 7 is guaranteed to be fixed.

[0032] Combine Figure 1-4 As shown, a plurality of anti-skid pads 5 are fixedly installed on the top of the movable plate 7. Through the above structural arrangement, the anti-skid pads 5 increase the anti-skid property of the movable plate 7 and prevent workers from slipping.

[0033] Combine Figure 1-4 As shown, a ladder 4 is fixedly installed on one side of the movable plate 7. Through the above-mentioned structural arrangement, it is convenient for workers to climb onto the movable plate 7 through the ladder 4.

[0034] Combine Figure 1-4 As shown, a push rod 3 is fixedly mounted on the corresponding mounting base 1. Through the above-mentioned structural arrangement, the push rod 3 facilitates the movement of the entire device.

[0035] Combine Figure 1-4 As shown, a mounting bracket 21 is fixedly mounted on the corresponding mounting base 1, an adjusting motor 17 is fixedly mounted on the mounting bracket 21, a bidirectional screw rod 20 is fixedly sleeved on the output shaft of the adjusting motor 17, two hooks 19 are threadedly sleeved on the bidirectional screw rod 20, a slide rail is fixedly mounted on the mounting bracket 21, two sliders are slidably mounted on the slide rail, and the two sliders are fixedly connected to the corresponding hooks 19 respectively. Through the above-mentioned structural arrangement, the bidirectional screw rod 20 is driven to rotate by starting the adjusting motor 17, and the bidirectional screw rod 20 drives the two hooks 19 to move left and right separately, so that the space between the two hooks 19 can be adjusted, which is convenient for hanging construction tools of different sizes and convenient for workers to use. The movement of the two hooks 19 is facilitated by the slide rail and the slider.

[0036] The working principle of the present invention is as follows: the device is pushed to the appropriate position by the push rod 3, and the worker climbs onto the movable plate 7 through the ladder 4. The anti-slip pad 5 increases the anti-slip property of the movable plate 7 to prevent the worker from slipping. The rotation of the crank 18 drives the rotation of the worm 15, and the worm 15 drives the rotation of the two worm wheels 16, which can drive the rotation of the two rotating shafts 22, which can drive the rotation of the four gears 23. The four gears 23 drive the four racks 26 to move upward at the same time, or by rotating the crank 18 in the opposite direction, the four racks 26 can be driven to move downward at the same time, so as to adjust the height of the movable plate 7. Then, the four locking bolts 8 are driven inward by rotating the four knobs 10 to lock them inward. The locking bolt 8 pushes the corresponding sliding sleeve 9 inward, thereby driving the corresponding limit rack 11 to move inward, so that the limit rack 11 is respectively engaged with the corresponding limit gear 12, thereby limiting the rotation of the two limit gears 12, thereby limiting the rotation of the two rotating shafts 22, and thus locking the height of the movable plate 7. Based on the self-locking property of the worm 15 and the worm wheel 16, the height of the movable plate 7 is ensured to be fixed. By starting the adjustment motor 17, the two-way screw rod 20 is driven to rotate, and the two-way screw rod 20 drives the two hooks 19 to move left and right separately, thereby adjusting the space between the two hooks 19, making it convenient to hang construction tools of different sizes and convenient for workers to use. The utility model has a simple structure and is easy to use. The lower end of the adjustable stairwell operating platform is convenient for quickly adjusting the height of the operating platform, convenient for workers to use, and convenient for quickly locking the height of the operating platform, saving time and effort.

[0037] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An operating platform for a stairwell with an adjustable lower end, comprising two mounting bases (1), characterized in that: Universal wheels (2) are rotatably mounted on both sides of the bottom of the two mounting bases (1), and through holes are provided on both sides of the top of the two mounting bases (1). A vertical rod (24) is movably mounted in any through hole, a rack (26) is fixedly mounted on the bottom end of any vertical rod (24), and a same movable plate (7) is fixedly mounted on the top of the four vertical rods (24), and a guardrail (6) is fixedly mounted on the top of the movable plate (7); A rotating shaft (22) is rotatably mounted in each of the two mounting bases (1) and the two mounting bases (1) are fixedly connected. Two gears (23) are fixedly sleeved on each of the two rotating shafts (22) and a worm gear (16) is fixedly sleeved on one end of each of the two rotating shafts (22). Any gear (23) is respectively engaged with a corresponding rack (26). A metal plate is fixedly mounted on the corresponding mounting base (1), and a worm (15) is rotatably mounted on the metal plate and is simultaneously engaged with the two worm gears (16). The other ends of the two rotating shafts (22) are fixedly sleeved with the limit gears (12); Two metal plates (14) are fixedly installed on one side of the two mounting bases (1) close to the limit gear (12), and a same slide rod (13) is fixedly installed between the two corresponding metal plates (14). Two slide sleeves (9) are slidably sleeved on the two slide rods (13), and a limit rack (11) is fixedly installed on the bottom of any slide sleeve (9). A locking bolt (8) is threadedly installed on any metal plate (14), and one end of any locking bolt (8) is rotatably connected to the corresponding slide sleeve (9), and the other end of any locking bolt (8) is fixedly sleeved with a knob (10).

2. The operating platform for a stairwell with an adjustable lower end according to claim 1, characterized in that: A plurality of anti-slip pads (5) are fixedly mounted on the top of the movable plate (7).

3. The operating platform for a stairwell with an adjustable lower end according to claim 1, characterized in that: A ladder (4) is fixedly mounted on one side of the movable plate (7).

4. The operating platform for a stairwell with an adjustable lower end according to claim 1, characterized in that: A push rod (3) is fixedly mounted on the corresponding mounting base (1).

5. The operating platform for a stairwell with an adjustable lower end according to claim 1, characterized in that: A return spring (25) is sleeved on any vertical rod (24), one end of any return spring (25) is fixed on the corresponding vertical rod (24), and the other end of any return spring (25) is fixed on the inner wall of the corresponding through hole.

6. The operating platform for a stairwell with an adjustable lower end according to claim 1, characterized in that: One end of the worm (15) is fixedly sleeved with a crank (18).

7. The operating platform for a stairwell with an adjustable lower end according to claim 1, characterized in that: A mounting frame (21) is fixedly mounted on the corresponding mounting base (1), an adjusting motor (17) is fixedly mounted on the mounting frame (21), a bidirectional screw rod (20) is fixedly sleeved on the output shaft of the adjusting motor (17), two hooks (19) are threadedly sleeved on the bidirectional screw rod (20), a slide rail is fixedly mounted on the mounting frame (21), two sliders are slidably mounted on the slide rail, and the two sliders are fixedly connected to the corresponding hooks (19) respectively.

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