Assembly type scissor ladder

Abstract

The utility model relates to the technical field of scissor ladders, in particular to an assembly type scissor ladder, a splicing device comprises two inserting plates, the two inserting plates are fixedly installed on the side face of a stair plate, two inserting grooves are formed in the surface of a wall body, two U-shaped plates are fixedly installed on the surface of the bottom of the stair plate, threaded rods are rotationally connected between the inner walls of the two ends of the two U-shaped plates, and the two ends of the two U-shaped plates are connected with the threaded rods. A rotating wheel is fixedly installed at one end opening of the threaded rod, a sliding groove is formed in the surface of the inner wall of the U-shaped plate, a movable plate is in threaded connection with the surface of the threaded rod, the movable plate is in sliding connection with the sliding groove through the threaded rod, a positioning rod is fixedly installed on the surface of the movable plate, and two positioning seats are fixedly installed on the surface of the wall body; and positioning holes are formed in the surfaces of the two positioning seats. According to the two-section type prefabricated scissor stair, the problems that safety accidents are easily caused and requirements of people cannot be met due to the fact that the connecting position between the prefabricated stair plate and the wall body of an existing two-section type prefabricated scissor stair is not firm enough are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of scissor ladders, in particular to an assembled scissor ladder. Background Art

[0002] At present, scissor stairs are one of the common forms of connecting floors in a building. A pair of overlapping but unconnected staircases are set in the same stairwell, thus having the function of two vertical evacuation passages. The commonly used scissor stair structure is a cast-in-place structure. This structure has good overall performance, but a long construction period. Therefore, prefabricated and assembled scissor stairs are widely used.

[0003] The existing publication number is CN204728590U, which is a two-section prefabricated scissor staircase. This patent adopts a beam setting, which can simultaneously serve as the upper and lower supports of two lower prefabricated stair sections and two upper prefabricated stair sections. Each prefabricated scissor staircase board of the scissor staircase can be divided into two parts, thereby greatly reducing the weight of the scissor staircase. The prefabricated scissor staircase boards are convenient and quick to manufacture, transport, hoist and position. Existing hoisting equipment can be used at the cast-in-place construction site, avoiding the replacement of large-tonnage hoisting equipment due to the heavy weight of a single prefabricated component, saving construction costs, and thus can be widely promoted in traditional cast-in-place buildings.

[0004] The inventors found in their daily work that the connection between the prefabricated stair treads and the wall of the above-mentioned two-section prefabricated scissors staircase is not firm enough, which may easily cause safety accidents and cannot meet people's requirements. Utility Model Content

[0005] The purpose of the utility model is to solve the technical problems in the above background and to propose an assembled scissors ladder.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an assembled scissor ladder comprising a wall and a stair tread, wherein a reinforcing plate is fixedly mounted on the bottom surface of the stair tread, a support seat is fixedly mounted on the surface of the wall, and an end of the reinforcing plate, which is away from the stair tread, is located within the support seat. A splicing device is provided on the side of the stair tread, and the splicing device includes two inserting plates, which are fixedly mounted on the side of the stair tread, and two slots are provided on the surface of the wall. The arrangement of the inserting plates and the slots serves to initially secure the stair tread to the wall.

[0007] Preferably, two U-shaped plates are fixedly mounted on the bottom surface of the stair tread, a threaded rod is rotatably connected between the inner walls of both ends of the two U-shaped plates, and a rotating wheel is fixedly mounted on one end of the threaded rod. The arrangement of the rotating wheel plays an effect of driving the threaded rod to rotate.

[0008] Preferably, the inner wall surface of the U-shaped plate is provided with a sliding groove, the surface of the threaded rod is threadedly connected to a movable plate, and the movable plate is slidably connected to the sliding groove via the threaded rod and the sliding groove. A positioning rod is fixedly mounted on the surface of the movable plate, and two positioning seats are fixedly mounted on the surface of the wall, and the surfaces of both positioning seats are provided with positioning holes. The provision of the threaded rod has the effect of driving the movable plate to move within the sliding groove, and the provision of the positioning rod and the positioning hole has the effect of limiting the insertion plate within the slot.

[0009] Preferably, a limiting device is provided on the side of the reinforcing plate. The limiting device includes a vertical groove provided on the side of the reinforcing plate. A movable plate is slidably connected to the interior of the vertical groove, and a rack is fixedly mounted on the surface of the movable plate. The provision of the vertical groove and movable plate makes the rack more stable during movement.

[0010] Preferably, an insertion rod is fixedly mounted on the bottom surface of the rack, and an insertion hole is provided on the inner bottom surface of the support base. The arrangement of the insertion rod and the insertion hole has the effect of limiting the reinforcing plate inside the support base.

[0011] Preferably, an L-shaped plate is fixedly mounted on the side of the reinforcing plate, a motor is fixedly mounted on the surface of the horizontal end of the L-shaped plate, a gear is fixedly mounted on the output end of the motor, and the gear and rack are meshed with each other. The motor drives the gear to rotate, and the gear drives the rack to move.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are:

[0013] 1. In the utility model, a splicing device is provided. When the stair tread and the wall need to be spliced, the plug plate on the side of the stair tread is first inserted into the slot on the wall surface, and then the rotating wheel is rotated. The rotation of the rotating wheel drives the threaded rod to rotate, and the rotation of the threaded rod drives the movable plate to move inside the slide groove. The movable plate moves inside the slide groove and drives the positioning rod to move. The positioning rod moves so that it inserts itself into the positioning hole. The positioning rod and the positioning hole are plugged into each other, so that the plug plate is firmly limited inside the slot, thereby completing the splicing operation between the stair tread and the wall. Through the cooperation of the above structure, the connection between the stair tread and the wall can be firm, avoiding the occurrence of safety accidents and improving the stability of the device.

[0014] 2. In the present invention, a limit device is provided. When the reinforcing plate needs to be fixed inside the support seat, the motor is started first. The motor starts to drive the gear to rotate, and the gear rotates and engages with the rack, thereby moving the rack. The rack movement drives the movable plate to move inside the vertical groove. At the same time, the rack movement also drives the insertion rod to move. The insertion rod moves so that it inserts itself into the inside of the socket. When the insertion rod and the socket are plugged in, the motor can be turned off. At the same time, the insertion rod and the socket are plugged in to firmly fix the reinforcing plate inside the support seat. Through the cooperation of the above structure, the reinforcing plate and the support seat can be used to increase the overall support effect of the stair board, further improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a three-dimensional structural diagram of an assembled scissors ladder;

[0016] Figure 2 For this utility model Figure 1 Schematic diagram of the back structure;

[0017] Figure 3 For this utility model Figure 2 A structural diagram from another angle;

[0018] Figure 4 The utility model proposes an assembled scissors ladder Figure 1 Schematic diagram of the structure at A in the middle;

[0019] Figure 5 The utility model proposes an assembled scissors ladder Figure 3 Schematic diagram of the structure at B in the middle;

[0020] Legend:

[0021] 1. Wall; 2. Stair board; 3. Reinforcement board; 4. Support seat; 5. Splicing device; 501. Insert plate; 502. Slot; 503. U-shaped plate; 504. Threaded rod; 505. Rotating wheel; 506. Slide; 507. Movable plate; 508. Positioning rod; 509. Positioning seat; 510. Positioning hole; 6. Limiting device; 61. Vertical slot; 62. Movable plate; 63. Rack; 64. Insert rod; 65. Socket; 66. L-shaped plate; 67. Motor; 68. Gear. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] See also Figure 1-5 The utility model provides a technical solution: an assembled scissors ladder, comprising a wall 1 and a stair tread 2, a reinforcing plate 3 fixedly installed on the bottom surface of the stair tread 2, a support seat 4 fixedly installed on the surface of the wall 1, and an end of the reinforcing plate 3 away from the stair tread 2 is located inside the support seat 4.

[0025] The specific configuration and function of the splicing device 5 and the limiting device 6 will be described in detail below.

[0026] In this embodiment, a splicing device 5 is provided on the side of the stair tread 2 , and the splicing device 5 includes two plug-in plates 501 . The two plug-in plates 501 are fixedly installed on the side of the stair tread 2 , and two slots 502 are provided on the surface of the wall 1 .

[0027] In this embodiment, the provision of the inserting plate 501 and the slot 502 plays a preliminary role in fixing the stair tread 2 and the wall 1 .

[0028] Specifically, two U-shaped plates 503 are fixedly installed on the bottom surface of the stair tread 2, and threaded rods 504 are rotatably connected between the inner walls at both ends of the two U-shaped plates 503, and a rotating wheel 505 is fixedly installed at one end of the threaded rod 504.

[0029] In this embodiment, the setting of the rotating wheel 505 has the effect of driving the threaded rod 504 to rotate.

[0030] Specifically, the inner wall surface of the U-shaped plate 503 is provided with a sliding groove 506, and the surface of the threaded rod 504 is threadedly connected to a movable plate 507. The movable plate 507 is slidably connected to the sliding groove 506 via the threaded rod 504. A positioning rod 508 is fixedly mounted on the surface of the movable plate 507. Two positioning seats 509 are fixedly mounted on the surface of the wall 1, and the surfaces of both positioning seats 509 are provided with positioning holes 510. The provision of the threaded rod 504 has the effect of driving the movable plate 507 to move within the sliding groove 506. The provision of the positioning rod 508 and the positioning hole 510 has the effect of retaining the plugboard 501 within the slot 502.

[0031] In this embodiment, a stopper 6 is provided on the side of the reinforcing plate 3. The stopper 6 includes a vertical slot 61. The vertical slot 61 is provided on the side of the reinforcing plate 3. A movable plate 62 is slidably connected to the interior of the vertical slot 61. A rack 63 is fixedly mounted on the surface of the movable plate 62. When the reinforcing plate 3 needs to be fixed inside the support base 4, the motor 67 is first started. The motor 67 drives the gear 68 to rotate. The gear 68 rotates and engages with the rack 63, thereby moving the rack 63. The rack 63 moves and drives the movable plate 62 to move inside the vertical slot 61. At the same time, the rack 63 also drives the insertion rod 64 to move. The insertion rod 64 moves and inserts itself into the inside of the insertion hole 65. When the insertion rod 64 and the insertion hole 65 are plugged in, the motor 67 is turned off. At the same time, the insertion rod 64 and the insertion hole 65 are plugged in, thereby firmly fixing the reinforcing plate 3 inside the support base 4. Through the cooperation of the above structure, the reinforcing plate 3 and the support base 4 can be used to increase the support effect of the entire stair tread 2, further improving the practicality of the device.

[0032] Specifically, an insertion rod 64 is fixedly mounted on the bottom surface of the rack 63 , and an insertion hole 65 is formed on the inner bottom surface of the support base 4 .

[0033] In this embodiment, the provision of the insertion rod 64 and the insertion hole 65 has the effect of limiting the reinforcing plate 3 inside the support base 4 .

[0034] Specifically, an L-shaped plate 66 is fixedly mounted on the side of the reinforcing plate 3 , a motor 67 is fixedly mounted on the surface of the horizontal end of the L-shaped plate 66 , a gear 68 is fixedly mounted on the output end of the motor 67 , and the gear 68 and the rack 63 are meshed with each other.

[0035] In this embodiment, the motor 67 drives the gear 68 to rotate, and the gear 68 drives the rack 63 to move.

[0036] Working principle: By setting up the splicing device 5, when it is necessary to splice the stair tread 2 and the wall 1, first insert the plug plate 501 on the side of the stair tread 2 into the slot 502 on the surface of the wall 1, and then rotate the wheel 505. The rotation of the wheel 505 drives the threaded rod 504 to rotate, and the rotation of the threaded rod 504 drives the movable plate 507 to move inside the slide groove 506. The movable plate 507 moves inside the slide groove 506 and drives the positioning rod 508 to move. The positioning rod 508 moves so that it inserts itself into the positioning hole 510. The positioning rod 508 and the positioning hole 510 are plugged into each other, thereby firmly limiting the plug plate 501 inside the slot 502, thereby completing the splicing operation between the stair tread 2 and the wall 1. Through the cooperation of the above structure, the connection between the stair tread 2 and the wall 1 can be firm, avoiding the occurrence of safety accidents and improving the stability of the device. When it is necessary to fix the reinforcing plate 3 inside the support seat 4, first start the motor 67. The motor 67 starts to drive the gear 68 to rotate, and the gear 68 rotates and engages with the rack 63, thereby moving the rack 63. The movement of the rack 63 drives the movable plate 62 to move inside the vertical slot 61. At the same time, the movement of the rack 63 also drives the insertion rod 64 to move. The insertion rod 64 moves so that it inserts itself into the inside of the socket 65. When the insertion rod 64 and the socket 65 are plugged in, turn off the motor 67. At the same time, the insertion rod 64 and the socket 65 are plugged in to firmly fix the reinforcing plate 3 inside the support seat 4. Through the cooperation of the above structure, the reinforcing plate 3 and the support seat 4 can be used to increase the overall support effect of the stair plate 2, further improving the practicality of the device.

[0037] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification of the above embodiment based on the technical essence of the present invention that does not deviate from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. An assembled scissor ladder, comprising a wall (1) and a stair tread (2), wherein a reinforcing plate (3) is fixedly mounted on the bottom surface of the stair tread (2), a supporting seat (4) is fixedly mounted on the surface of the wall (1), and an end of the reinforcing plate (3) away from the stair tread (2) is located inside the supporting seat (4), characterized in that: A splicing device (5) is provided on the side of the stair tread (2), and the splicing device (5) comprises two plug plates (501). The two plug plates (501) are fixedly mounted on the side of the stair tread (2), and two slots (502) are provided on the surface of the wall (1).

2. The assembled scissors ladder according to claim 1, characterized in that: Two U-shaped plates (503) are fixedly mounted on the bottom surface of the staircase board (2), and threaded rods (504) are rotatably connected between the inner walls at both ends of the two U-shaped plates (503), and a rotating wheel (505) is fixedly mounted on one end of the threaded rod (504).

3. The assembled scissors ladder according to claim 2, characterized in that: The inner wall surface of the U-shaped plate (503) is provided with a slide groove (506), the surface of the threaded rod (504) is threadedly connected with a movable plate (507), the movable plate (507) is slidably connected with the threaded rod (504) and the slide groove (506), a positioning rod (508) is fixedly installed on the surface of the movable plate (507), and two positioning seats (509) are fixedly installed on the surface of the wall (1), and the surfaces of the two positioning seats (509) are provided with positioning holes (510).

4. The assembled scissors ladder according to claim 1, characterized in that: A limiting device (6) is provided on the side of the reinforcing plate (3), and the limiting device (6) comprises a vertical groove (61). The vertical groove (61) is opened on the side of the reinforcing plate (3), and a movable plate (62) is slidably connected inside the vertical groove (61), and a rack (63) is fixedly installed on the surface of the movable plate (62).

5. The assembled scissors ladder according to claim 4, characterized in that: An insertion rod (64) is fixedly mounted on the bottom surface of the rack (63), and an insertion hole (65) is provided on the inner bottom surface of the support seat (4).

6. The assembled scissors ladder according to claim 1, characterized in that: An L-shaped plate (66) is fixedly mounted on the side of the reinforcing plate (3), a motor (67) is fixedly mounted on the surface of the horizontal end of the L-shaped plate (66), a gear (68) is fixedly mounted on the output end of the motor (67), and the gear (68) and the rack (63) are meshed with each other.

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