Fabricated building traffic stairway

Abstract

The invention discloses an assembly type building traffic staircase, which relates to the field of staircases and comprises a staircase main body, and a movable cavity is reserved in a step of the staircase main body. A shifting rod is shifted to drive a threaded block to rotate, at the moment, a threaded rod rotates synchronously, an extension step in threaded connection with the threaded rod moves synchronously, at the moment, the extension step moves in the direction away from the stair body, and follow-up stair unfolding operation is facilitated through movable connection of the stair body and the extension step; the extending steps are slidably unfolded in the movable cavity, the overall usable area of the staircase is enlarged, when the staircase is not used, the extending steps can be stored in the movable cavity, the staircase can be conveniently stored, and when a first limiting groove reserved in the extending steps movably abuts against a limiting block arranged on the outer ring of a threaded rod in a sleeving mode, the extending steps can be conveniently stored. No moving space exists between the threaded rod and the extension step, so that the threaded rod can not rotate any more, and at the moment, the threaded rod and the extension step are prevented from being in disengaged connection.

Description

Technical Field

[0001] The invention relates to the field of stairs, and in particular to an assembled building traffic staircase. Background Art

[0002] The stairs in a building are not only a vertical transportation hub connecting different floors, but also an important part of the building. Stairs are mainly composed of steps, stair platforms, railings and handrails. Each step is composed of treads and risers. The treads are the part that pedestrians step on. Stairs enable people to travel between different floors conveniently and quickly.

[0003] The existing Chinese patent authorization announcement number: CN111535530A discloses an assembled staircase, which relates to the field of construction engineering technology. It includes a prefabricated staircase and two installation platforms. The upper and lower ends of the prefabricated staircase are respectively provided with installation plates. The upper end surface of the installation platform is correspondingly provided with an installation groove for the installation plate to be embedded. It also includes: a receiving groove, which is provided on the upper end surface of each installation platform and is located on the side of the installation groove away from the prefabricated staircase, and the receiving groove is connected with the installation groove; a first dowel, which is located on the side wall of the receiving groove facing the installation groove; a second dowel, which is located at one end of the installation plate away from the prefabricated staircase, and when the installation plate is located in the installation groove, the second dowel is located in the corresponding receiving groove and is staggered with the first dowel. By providing the receiving groove, the first dowel and the second dowel, and fixing by injecting cement mortar into the receiving groove, the assembled staircase connection structure is made stronger, and the overall use is made safer and more durable.

[0004] The existing staircases still have the following problems when in use: the existing prefabricated assembled staircases cannot adjust the staircase table area when in use, which makes the use range and application range of the assembled staircases smaller.

[0005] Therefore, it is necessary to invent a prefabricated building traffic staircase to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide an assembled building traffic staircase to solve the problem that the existing prefabricated assembled stairs proposed in the above background technology cannot adjust the staircase table area when in use, which makes the assembled stairs have a small range of use and a small scope of application.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an assembled building traffic staircase, comprising a staircase main body, a movable cavity is reserved inside the steps of the staircase main body, and an extension step is slidably connected inside the movable cavity, and the sides of the extension step are fixedly connected with side panels, and a threaded rod is rotatably connected inside the movable cavity at the bottom through a bearing, and the outer ring of the threaded rod is threadedly connected to a threaded groove reserved inside the extension step, and the threaded rod and the extension step are anti-detachment connected through a limiting assembly, and the end of the threaded rod is rotated by a toggle assembly.

[0008] Preferably, the number of the extended steps is the same as the number of steps in the stair main body, and the side of the extended steps away from the stair main body is fixedly connected with a side plate, and the side plate can fit the side of the stair main body;

[0009] The outer wall of the extended step is in contact with the inner wall of the movable cavity and is slidably connected. The movable connection between the staircase body and the extended step facilitates the subsequent stair deployment operation, expands the overall use area of ​​the staircase, and facilitates the storage of the staircase when it is not in use.

[0010] Preferably, the limit assembly includes an annular groove 1 preset inside the threaded rod, and an annular block is rotatably connected inside the annular groove 1, and the limit block fixedly connected to the outer wall of the annular block is slidably connected to the limit groove 1, and the limit groove 1 is communicated with the threaded groove 1 to ensure that the threaded rod and the extension step are anti-detachment connected.

[0011] Preferably, the outer ring diameter of the annular block is smaller than the outer ring diameter of the threaded rod, and the outer wall of the annular block is in contact with the inner wall of the annular groove 1 to achieve rotational connection, ensuring that the rotation of the threaded rod is not hindered.

[0012] Preferably, there are two limit blocks, and the two limit blocks are symmetrically fixed on the outer wall of the annular block with reference to the central axis of the annular block as the symmetry axis, and the outer wall of the limit block is in contact with the inner wall of the limit groove one to achieve a sliding connection, and both ends of the limit groove one are closed to ensure that the threaded rod and the extended step are anti-detachment connected.

[0013] Preferably, the toggle assembly includes a threaded block movably mounted on the outer ring of the threaded rod, and the threaded block is threadedly connected to the second threaded groove reserved inside the stair main body, and a short rod is fixedly connected to the internal through hole of the threaded block, and the short rod is slidably connected to the second limiting groove reserved inside the threaded rod, thereby facilitating the rotation of the toggle threaded rod.

[0014] Preferably, a lever is movably inserted inside the threaded block, and the lever consists of a disc and a cylindrical rod welded to the disc, the outer ring diameter of the cylindrical rod is smaller than the outer ring diameter of the disc, and the disc and the cylindrical rod are matched and rotatably connected with annular groove 2, and annular groove 2 is connected with threaded groove 2, so that the threaded block is rotated by turning the lever, and then the threaded rod is driven to rotate.

[0015] Preferably, the columnar rod passes through the interior of the threaded block and is slidably connected with the through opening inside the threaded block.

[0016] Preferably, both ends of the second limiting groove are closed, and the inner wall of the second limiting groove fits against the outer wall of the short rod and is slidably connected to ensure that the thread block and the second thread groove are anti-detachable.

[0017] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0018] 1. The present invention drives the threaded block to rotate by toggling the toggle lever, at which time the threaded rod rotates synchronously, and the extended step threadedly connected with the threaded rod moves synchronously, at which time the extended step moves in a direction away from the stair main body, and the movable connection between the stair main body and the extended step facilitates the subsequent stair deployment operation, and the extended step slides and deploys inside the movable cavity, thereby expanding the overall use area of ​​the stair. When the stair is not in use, the extended step can be stored in the movable cavity, which is convenient for storing the stair. When the limit groove reserved inside the extended step is movably abutted against the limit block set on the outer ring of the threaded rod, there is no movable space between the threaded rod and the extended step, so that the threaded rod can no longer rotate, and the threaded rod and the extended step are prevented from falling off and connecting;

[0019] 2. Due to the threaded connection between the thread block and the second thread groove, the thread block will move and change position when it rotates. At this time, the short rod fixedly connected to the internal through hole of the thread block moves inside the limiting groove 2. In this way, the limiting groove 2 limits the space for the thread block to move, thereby ensuring that the thread block and the second thread groove are anti-detached and the toggle assembly can be used smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0022] Figure 2 A three-dimensional diagram of the staircase storage structure of the present invention;

[0023] Figure 3 It is a three-dimensional diagram of the internal structure of the staircase body (partially cut away) of the present invention;

[0024] Figure 4 It is an exploded view of the overall structure of the limit assembly of the present invention;

[0025] Figure 5 It is an exploded view of the connection structure between the threaded block and the threaded rod of the present invention;

[0026] Figure 6 It is a three-dimensional diagram of the internal structure of the toggle assembly of the staircase body (partially cut away) of the present invention.

[0027] Description of reference numerals:

[0028] 1. Staircase body; 2. Extended steps; 3. Movable cavity; 4. Side panels; 5. Threaded rod; 6. Threaded groove one; 7. Limiting assembly; 701. Annular groove one; 702. Annular block; 703. Limiting block; 704. Limiting groove one; 8. Toggle assembly; 801. Toggle rod; 802. Annular groove two; 803. Threaded block; 804. Threaded groove two; 805. Short rod; 806. Limiting groove two. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] The present invention provides Figure 1-6 An assembled building traffic staircase shown in the figure comprises a staircase body 1, a movable cavity 3 is reserved inside the staircase body 1, and an extension step 2 is slidably connected inside the movable cavity 3, and the side of the extension step 2 is fixedly connected with a side plate 4, and a threaded rod 5 is rotatably connected to the inside of the lowest movable cavity 3 through a bearing, and the outer ring of the threaded rod 5 is threadedly connected to a threaded groove 6 reserved inside the extension step 2, and the threaded rod 5 and the extension step 2 are connected to prevent disengagement through a limiting component 7, and the end of the threaded rod 5 is rotated by a toggle component 8.

[0031] The number of extended steps 2 is the same as the number of steps in the stair main body 1, and the side of the extended step 2 away from the stair main body 1 is fixedly connected with a side panel 4, and the side panel 4 can fit the side of the stair main body 1, the outer wall of the extended step 2 is in contact with the inner wall of the movable cavity 3 and a sliding connection is realized. The movable connection between the stair main body 1 and the extended step 2 facilitates the subsequent stair deployment operation, and the extended step 2 slides and deploys inside the movable cavity 3 to expand the overall use area of ​​the stairs. When the stairs are not in use, the extended step 2 can be stored in the movable cavity 3, which is convenient for the storage of the stairs.

[0032] In order to ensure the anti-slip connection between the stair body 1 and the extended step 2, the limiting assembly 7 provided includes an annular groove 701 preset inside the threaded rod 5, and the annular groove 701 is rotatably connected inside with an annular block 702, and a limiting block 703 fixedly connected to the outer wall of the annular block 702 is slidably connected to the limiting groove 704, and the limiting groove 704 is communicated with the threaded groove 6 to ensure that the threaded rod 5 and the extended step 2 are anti-slip connected, the outer ring diameter of the annular block 702 is smaller than the outer ring diameter of the threaded rod 5, and the outer wall of the annular block 702 is in contact with the inner wall of the annular groove 701 and is rotatably connected to ensure that the rotation of the threaded rod 5 is not hindered, and there are two limiting blocks 703 in number, and the two limiting blocks 703 refer to the annular block 702. The central axis is the symmetry axis and is symmetrically fixed on the outer wall of the annular block 702, and the outer wall of the limit block 703 is in contact with the inner wall of the limit groove 704 to achieve a sliding connection, and the two ends of the limit groove 704 are closed, so that when the threaded rod 5 rotates, the extension step 2 threadedly connected with the threaded rod 5 moves synchronously, thereby realizing the expansion and storage of the stair main body 1 and the extension step 2. At the same time, when the extension step 2 is expanded with the rotation of the threaded rod 5, when the limit groove 704 reserved inside the extension step 2 moves and abuts against the limit block 703 on the outer ring of the threaded rod 5, there is no movable space between the threaded rod 5 and the extension step 2, so that the threaded rod 5 can no longer rotate, thereby avoiding the threaded rod 5 and the extension step 2 from falling off.

[0033] The toggle assembly 8 includes a threaded block 803 movably mounted on the outer ring of the threaded rod 5, and the threaded block 803 is threadedly connected to the second threaded groove 804 reserved inside the stair main body 1, and a short rod 805 is fixedly connected to the internal through hole of the threaded block 803, and the short rod 805 is slidably connected to the second limit groove 806 reserved inside the threaded rod 5, so as to facilitate the rotation of the toggle threaded rod 5. The threaded block 803 is internally movably inserted with a toggle rod 801, and the toggle rod 801 is composed of a disc and a columnar rod welded to the disc. The outer ring diameter of the columnar rod is smaller than the outer ring diameter of the disc, and the disc and the columnar rod are matched and rotatably connected with the second annular groove 802, and the second annular groove 802 is connected with the second threaded groove 804. After 801 drives the threaded block 803 to rotate, it further drives the threaded rod 5 to rotate. The columnar rod penetrates the interior of the threaded block 803 and realizes a sliding connection with the internal through-hole of the threaded block 803. In this way, when the lever 801 is turned, the threaded block 803 is driven to rotate. At this time, the threaded rod 5 is rotated synchronously. When the extended step 2 threadedly connected with the threaded rod 5 is expanded to the corresponding width under the rotation of the threaded rod 5, the rotation of the lever 801 is stopped. Since the threaded block 803 is threadedly connected with the thread groove 804, the threaded connection is self-locking. In this way, when the threaded block 803 does not rotate, its angle is automatically limited. At this time, the threaded rod 5 cannot rotate either, which causes the expansion distance between the entire stair body 1 and the extended step 2 to reach a limit.

[0034] Both ends of the second limiting groove 806 are closed, and the inner wall of the second limiting groove 806 is in contact with the outer wall of the short rod 805 to achieve a sliding connection. The threaded connection between the thread block 803 and the second thread groove 804 causes the thread block 803 to move in position when rotating. The second limiting groove 806 limits the space for the thread block 803 to move, thereby ensuring that the thread block 803 and the second thread groove 804 achieve an anti-detachment connection.

[0035] Working principle: When using an assembled building traffic staircase, first when it is necessary to unfold the stair main body 1 and the extension step 2, the toggle lever 801 is rotated in a circular shape to drive the threaded block 803 to rotate synchronously. A short rod 805 is fixedly connected to the internal through hole of the threaded block 803, and the short rod 805 is slidably connected to the limiting groove 806 reserved inside the threaded rod 5, so that when the threaded block 803 rotates, the threaded rod 5 is synchronously driven to rotate. In this way, when the threaded rod 5 rotates, the extension step 2 threadedly connected with the threaded rod 5 moves synchronously. At this time, the extension step 2 moves in the direction away from the stair main body 1, and the outer wall of the extension step 2 is attached to the inner wall of the movable cavity 3 to realize a sliding connection. The movable connection between the stair main body 1 and the extension step 2 facilitates the subsequent stair unfolding operation, and the extension step 2 slides and unfolds inside the movable cavity 3 to expand the staircase. The overall usable area, when the stairs are not in use, the extended step 2 can be stored in the movable cavity 3, which is convenient for storing the stairs, and because the threaded block 803 and the second threaded groove 804 are threadedly connected, the threaded connection has self-locking properties, so that the angle of the threaded block 803 is automatically limited when it does not rotate, and the threaded rod 5 cannot rotate at this time, which causes the expansion distance between the entire stair body 1 and the extended step 2 to reach a limit, which is convenient for the stability of the stair expansion use, and because the threaded connection between the threaded block 803 and the second threaded groove 804 causes the threaded block 803 to move and change its position when it rotates, at this time, the short rod 805 fixedly connected to the internal through hole of the threaded block 803 moves inside the second limiting groove 806, so that the second limiting groove 806 limits the space size for the movement of the threaded block 803, thereby ensuring that the threaded block 803 and the second threaded groove 804 are connected to prevent disengagement;

[0036] At the same time, when the extension step 2 is unfolded as the threaded rod 5 rotates, when the limit groove 704 reserved inside the extension step 2 moves and abuts against the limit block 703 on the outer ring of the threaded rod 5, there is no movable space between the threaded rod 5 and the extension step 2, so that the threaded rod 5 can no longer rotate, thereby avoiding the threaded rod 5 and the extension step 2 from falling off.

[0037] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An assembled building traffic staircase, comprising a staircase body (1), characterized in that: The staircase body (1) has a movable cavity (3) reserved inside the steps, and the movable cavity (3) is slidably connected to the extension step (2), and the side of the extension step (2) is fixedly connected to the side plate (4), the bottom of the movable cavity (3) is rotatably connected to a threaded rod (5) through a bearing, and the outer ring of the threaded rod (5) is threadedly connected to a thread groove (6) reserved inside the extension step (2), and the threaded rod (5) and the extension step (2) are connected to each other through a limit assembly (7) to prevent them from falling off, and the end of the threaded rod (5) is rotated by a toggle assembly (8).

2. The assembled building traffic staircase according to claim 1, characterized in that: The number of the extended steps (2) is the same as the number of steps in the staircase body (1), and the side of the extended steps (2) away from the staircase body (1) is fixedly connected to a side plate (4), and the side plate (4) can fit the side of the staircase body (1); The outer wall of the extension step (2) is in contact with the inner wall of the movable cavity (3) to achieve a sliding connection.

3. The assembled building traffic staircase according to claim 1, characterized in that: The limiting assembly (7) comprises an annular groove (701) preset inside the threaded rod (5), and an annular block (702) is rotatably connected inside the annular groove (701), and a limiting block (703) fixedly connected to the outer wall of the annular block (702) is slidably connected to the limiting groove (704), and the limiting groove (704) is connected to the threaded groove (6).

4. The assembled building traffic staircase according to claim 3, characterized in that: The outer diameter of the annular block (702) is smaller than the outer diameter of the threaded rod (5), and the outer wall of the annular block (702) is in contact with the inner wall of the annular groove (701) to achieve rotational connection.

5. The assembled building traffic staircase according to claim 4, characterized in that: The limit blocks (703) are provided in two pieces, and the two limit blocks (703) are symmetrically fixed on the outer wall of the annular block (702) with reference to the central axis of the annular block (702) as the symmetry axis, and the outer wall of the limit block (703) is in contact with the inner wall of the limit groove (704) to achieve sliding connection, and both ends of the limit groove (704) are closed.

6. The assembled building traffic staircase according to claim 1, characterized in that: The toggle assembly (8) comprises a threaded block (803) movably mounted on the outer ring of the threaded rod (5), the threaded block (803) being threadably connected to a second threaded groove (804) reserved inside the staircase body (1), and a short rod (805) being fixedly connected to an internal through hole of the threaded block (803), the short rod (805) being slidably connected to a second limit groove (806) reserved inside the threaded rod (5).

7. The assembled building traffic staircase according to claim 6, characterized in that: The threaded block (803) is internally movably inserted with a lever (801), and the lever (801) is composed of a disc and a columnar rod welded to the disc, the outer diameter of the columnar rod is smaller than the outer diameter of the disc, and the disc and the columnar rod are matched and rotatably connected with the second annular groove (802), and the second annular groove (802) is connected with the second threaded groove (804).

8. The assembled building traffic staircase according to claim 7, characterized in that: The columnar rod passes through the interior of the threaded block (803) and is slidably connected to the internal through-hole of the threaded block (803).

9. The assembled building traffic staircase according to claim 7, characterized in that: Both ends of the second limiting groove (806) are closed, and the inner wall of the second limiting groove (806) is in contact with the outer wall of the short rod (805) to achieve sliding connection.

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