CN114439170A

CN114439170A - Assembled timber structure stair

Info

Publication number: CN114439170A
Application number: CN202210079173.1A
Authority: CN
Inventors: 黄朝曙; 彭强
Original assignee: Hunan Lushang Residential Industrial Technology Co ltd
Current assignee: Hunan Lushang Residential Industrial Technology Co ltd
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-05-06
Anticipated expiration: 2042-01-24
Also published as: CN114439170B

Abstract

The invention relates to the technical field of assembly type buildings and discloses an assembly type wood structure stair which comprises a bottom plate and a stair body, wherein the bottom plate is positioned below the stair body; according to the invention, the initial splicing is completed between the bottom plate and the stair through the fixed block, the T-shaped sliding groove, the T-shaped sliding block, the first spring, the movable block, the wedge-shaped inserting block and the wedge-shaped inserting groove, then the notch is clamped to the outer side of the limiting column through rotating the connecting strip, so that the splicing is completed between the right side of the bottom plate and the bottom end of the stair, the threaded supporting rod can be vertically placed by utilizing the cylinder in the movable groove formed by the concave part, the threaded supporting rod can slide in the movable groove through the cylinder, and the top end of the threaded supporting rod is guided to move into the inclined clamping groove formed below the clamping seat, so that the supporting is completed.

Description

Assembled timber structure stair

Technical Field

The invention relates to the technical field of assembly type buildings, in particular to an assembly type wood structure stair.

Background

In recent years, wood structure buildings are widely concerned worldwide, and compared with reinforced concrete and masonry structure buildings, wood structure houses have the advantages of long service life, simplicity and easiness in construction, short construction period, capability of being designed in a personalized indoor mode, good heat insulation effect, good air permeability, shock resistance and the like. Based on these characteristics, the wood structure building has been widely adopted by asian countries such as japan, korea, and the like. The wooden houses, villas and apartments also appear in the areas of Shanghai, Beijing, Shenzhen, Dalian, Suzhou, Hangzhou, Wuhan, Ningbo, Shenyang, Chengdu and the like in China, and the wooden stairs are increasingly emphasized as part of wooden buildings.

In building the stairwell, often need build instrument formula traffic stair in order to satisfy the construction needs, usually these instrument formula traffic stair all need dismantle after the construction is accomplished, but ordinary instrument formula traffic stair are fixed knot structure mostly, and the installation is inconvenient with the dismantlement, causes certain inconvenience for the workman is under construction, for the convenience of the instrument formula traffic stair that uses during the construction, we have proposed an assembled timber structure stair.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an assembled wood structure stair, which solves the problems in the background.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: an assembled wood structure stair comprises a bottom plate and a stair, wherein the bottom plate is positioned below the stair, a concave part is fixedly connected to the left side of the upper surface of the bottom plate, penetrating movable grooves are formed in the front surface and the rear surface of the concave part, cylinders are movably connected to the inner sides of the movable grooves, opposite ends of the two cylinders are positioned on the inner sides of the concave part and are fixedly connected with a threaded supporting rod together, a threaded sleeve is connected to the outer side wall of the threaded supporting rod in a threaded manner, the bottom of the threaded sleeve is positioned on the outer side of the threaded supporting rod and is rotatably connected with a movable sleeve, a first connecting block is fixedly connected to the right side of the movable sleeve, a limiting column is fixedly connected to the right side of the upper surface of the bottom plate, the top end of the limiting column is attached to the lower surface of the stair, a clamping seat is fixedly connected to the left side of the lower surface of the stair, and an inclined clamping seat is formed in the lower surface of the clamping seat, the top of the threaded support rod is positioned inside the inclined bayonet and is in sliding connection with the inclined bayonet, the top of the threaded support rod is attached to the upper surface of the inner side of the inclined bayonet, the lower surface of the stair is positioned on the right side of the clamping seat and is fixedly connected with a second connecting block, the front surfaces of the first connecting block and the second connecting block are fixedly connected with connecting columns, a connecting plate is arranged between the two connecting columns, the front surface of the connecting plate is provided with connecting grooves, the two connecting columns are respectively positioned on the inner sides of the two connecting grooves and are respectively in sliding connection with the two connecting grooves, the bottom end of the stair is fixedly connected with a fixed block, the left side of the fixed block is fixedly connected with a connecting strip through a rotating shaft, the front surface of the connecting strip is positioned on the outer side of the limiting column and is provided with a notch, and the lower surface of the fixed block is provided with a T-shaped sliding groove, the T-shaped sliding groove is characterized in that a T-shaped sliding block is slidably connected inside the T-shaped sliding groove, a first spring is fixedly connected between the right side of the T-shaped sliding block and the right side of the inside of the T-shaped sliding groove, the bottom of the T-shaped sliding block is located on the lower portion of the fixed block and is fixedly connected with a movable block, a wedge-shaped inserting block is fixedly connected to the bottom of the movable block, a wedge-shaped inserting groove is formed in the right side of the bottom plate, and the wedge-shaped inserting block is inserted into the inner side of the wedge-shaped inserting groove.

Preferably, the upper surface of the bottom plate is located on the inner side of the concave part and is fixedly connected with an inclined abutting block, and the upper surface of the inclined abutting block is attached to the bottom end of the threaded support rod and is in sliding connection with the threaded support rod.

Preferably, the upper surface of bottom plate is close to spacing post left side department has seted up the location mouth, the left side fixedly connected with rectangle frame of connecting strip, the outside fixedly connected with down tube of rectangle frame, the lateral wall sliding connection of down tube has the locating lever, the bottom of locating lever peg graft with the inboard of location mouth, the outside cover of down tube is equipped with spring two, the both ends of spring two respectively with the inside left side of rectangle frame with the left side fixed connection of locating lever.

Preferably, the stair include mounting panel and footboard, the last fixed surface of mounting panel is connected with a plurality of T shape draw runner, the T shape elongated slot that runs through the formula is seted up to the front surface of footboard, T shape draw runner is located the inboard of T shape elongated slot, and with T shape elongated slot sliding connection, the through hole of running through the formula is seted up to the front surface of T shape draw runner, the inside sliding connection who runs through the hole has two hollow tubes, two a plurality of springs three of common fixedly connected with between the opposite side of hollow tube, the inside of hollow tube is rotated and is connected with the U-shaped locating part, the front end and the rear end of U-shaped locating part pass respectively the front end and the rear end of hollow tube, and respectively with the front surface and the rear surface of footboard are laminated mutually, the front end and the equal fixedly connected with wedge of rear end of U-shaped locating part.

Preferably, a sealing gasket is fixedly connected to the inner side of the T-shaped long groove.

Preferably, the upper surface of the pedal is fixedly connected with a non-slip mat.

Preferably, the outer side wall of the threaded sleeve is provided with anti-skid threads.

Preferably, the outer side wall of the connecting column is provided with an anti-falling opening, the inner side of the connecting groove is fixedly connected with an anti-falling block, and the anti-falling block is clamped on the inner side of the anti-falling opening.

Preferably, a rubber pad is fixedly connected to the inner side of the wedge-shaped slot.

(III) advantageous effects

The invention provides an assembled wood structure stair which has the following beneficial effects:

(1) according to the invention, the bottom plate and the stair are spliced primarily through the fixed block, the T-shaped sliding groove, the T-shaped sliding block, the first spring, the movable block, the wedge-shaped inserting block and the wedge-shaped inserting groove, the connecting strip is rotated to clamp the notch to the outer side of the limiting column, so that the right side of the bottom plate and the bottom end of the stair are spliced, the threaded support rod can be vertically placed by utilizing the cylinder in the movable groove formed in the concave part and can slide in the movable groove through the cylinder, the top end of the threaded support rod is guided to move into the inclined clamping groove formed below the clamping seat to complete supporting, the connecting plate is connected with the connecting column on the first connecting block and the second connecting block through the connecting groove, then the movable sleeve is driven to slide upwards or downwards on the outer side of the threaded support rod by rotating the threaded sleeve, the inclination angle of the connecting plate is changed, and the threaded support rod and the stair are tensioned, make the connection of each part inseparabler, and support in the stair below through the connecting plate slope for firm when stair use, the device is whole to make the installation more firm through the cooperation of each part, and dismantles simple to operate.

(2) According to the invention, through the mutual matching of the positioning port and the positioning rod, after the connecting rod rotates and is clamped to the outer side of the limiting column through the notch, the rotation of the connecting rod is limited, so that the connecting rod is stably connected with the limiting column, the notch is prevented from being separated from the outer side of the limiting column, and when the connecting rod needs to be separated, the positioning rod is pulled to move along the two inclined rod compression springs in the rectangular frame, so that the positioning rod is separated from the positioning port, the connecting rod and the limiting column can be separated, and the whole disassembly work of the device is facilitated.

(3) The stair is convenient to detach and mount through the mounting plate and the pedal, when the pedal is mounted on the mounting plate, the pedal and the mounting plate are mounted together through the fact that the T-shaped long groove formed in the pedal slides along the T-shaped sliding strip, in the mounting process, when the pedal is in contact with the wedge block, the wedge block drives the hollow pipe on the outer side of the U-shaped limiting part to move, the hollow pipe compresses the third spring, the wedge blocks can be close to each other and contract into the T-shaped long groove, the T-shaped long groove can be mounted on the outer side of the T-shaped sliding strip, after the pedal is mounted, the third spring recovers to drive the two hollow pipes to separate, the wedge blocks extend out again and are clamped in front of and behind the T-shaped long groove and the T-shaped sliding strip, the T-shaped sliding strip is prevented from falling out of the T-shaped long groove, and stability of the pedal when the pedal is mounted on the mounting plate is guaranteed.

(4) According to the invention, the anti-drop port is formed in the outer side wall of the connecting column, the anti-drop block is fixedly connected to the inner side of the connecting groove, when the two connecting columns are connected through the two connecting grooves formed in the connecting plate, the anti-drop block is clamped in the anti-drop port, when the adjusting threaded sleeve is prevented from rotating to drive the connecting plate to move, the stair and the threaded supporting rod are tensioned, the connecting plate is prevented from being separated, the connecting plate is convenient to disassemble and replace, the bottom of the threaded supporting rod is attached to the block through inclination, a supporting point can be provided for the bottom of the threaded supporting rod, the stability of the threaded supporting rod during supporting is ensured, the inclined bayonet arranged on the clamping seat is convenient to cooperate, and the movable threaded supporting rod is more stable during movement.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of the U-shaped position limiting member of the present invention;

FIG. 3 is a schematic structural view of a connecting plate according to the present invention;

FIG. 4 is a schematic structural view of a connecting column of the present invention;

FIG. 5 is an enlarged view of the structure at A of FIG. 1 according to the present invention;

fig. 6 is an enlarged schematic view of fig. 1 at B.

In the figure: 1. a base plate; 2. a staircase; 3. a female member; 4. a movable groove; 5. a cylinder; 6. a threaded support rod; 7. a threaded sleeve; 8. moving the sleeve; 9. a first connecting block; 10. a limiting column; 11. a card holder; 12. inclining the bayonet; 13. a second connecting block; 14. connecting columns; 15. a connecting plate; 16. connecting grooves; 17. a fixed block; 18. a connecting strip; 19. a recess; 20. a T-shaped chute; 21. a T-shaped slider; 22. a first spring; 23. a movable block; 24. a wedge-shaped insert block; 25. a wedge-shaped slot; 26. inclining the resisting block; 27. positioning the opening; 28. a rectangular frame; 29. a diagonal bar; 30. positioning a rod; 31. a second spring; 32. a T-shaped slide bar; 33. a T-shaped long slot; 34. a through opening; 35. a hollow tube; 36. a third spring; 37. a U-shaped limiting part; 38. a wedge block; 39. a gasket; 40. a non-slip mat; 41. anti-skid lines; 42. preventing the opening from being separated; 43. an anti-drop block; 44. a rubber pad; 201. mounting a plate; 202. a pedal.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 6, the present invention provides a technical solution: an assembled wood structure stair comprises a bottom plate 1 and a stair 2, wherein the bottom plate 1 is positioned below the stair 2, a concave part 3 is fixedly connected to the left side of the upper surface of the bottom plate 1, penetrating movable grooves 4 are formed in the front surface and the rear surface of the concave part 3, cylinders 5 are movably connected to the inner sides of the movable grooves 4, opposite ends of the two cylinders 5 are jointly and fixedly connected with a threaded support rod 6 positioned on the inner side of the concave part 3, a threaded sleeve 7 is connected to the outer side wall of the threaded support rod 6 in a threaded manner, the bottom of the threaded sleeve 7 is rotatably connected with a movable sleeve 8 positioned on the outer side of the threaded support rod 6, a first connecting block 9 is fixedly connected to the right side of the movable sleeve 8, a limiting column 10 is fixedly connected to the right side of the upper surface of the bottom plate 1, the top end of the limiting column 10 is attached to the lower surface of the stair 2, a clamping seat 11 is fixedly connected to the left side of the lower surface of the stair 2, and an inclined clamping seat 12 is formed in the lower surface of the clamping seat 11, the top of the threaded support rod 6 is positioned inside the inclined bayonet 12 and is in sliding connection with the inclined bayonet 12, the top of the threaded support rod 6 is attached to the inner upper surface of the inclined bayonet 12, the lower surface of the stair 2 is positioned on the right side of the clamping seat 11 and is fixedly connected with a connecting block II 13, the front surfaces of the connecting block I9 and the connecting block II 13 are both fixedly connected with connecting columns 14, a connecting plate 15 is arranged between the two connecting columns 14, the front surface of the connecting plate 15 is both provided with connecting grooves 16, the two connecting columns 14 are respectively positioned on the inner sides of the two connecting grooves 16 and are respectively in sliding connection with the two connecting grooves 16, the bottom end of the stair 2 is fixedly connected with a fixed block 17, the left side of the fixed block 17 is fixedly connected with a connecting strip 18 through a rotating shaft, the front surface of the connecting strip 18 is positioned on the outer side of the limiting column 10 and is provided with a notch 19, the lower surface of the fixed block 17 is provided with a T-shaped sliding groove 20, and the T-shaped sliding block 21 is slidably connected inside the T-shaped sliding groove 20, a first spring 22 is fixedly connected between the right side of the T-shaped slide block 21 and the right side of the inside of the T-shaped slide groove 20, a movable block 23 is fixedly connected below the fixed block 17 at the bottom of the T-shaped slide block 21, a wedge-shaped insert 24 is fixedly connected at the bottom of the movable block 23, a wedge-shaped slot 25 is formed in the right side of the bottom plate 1, the wedge-shaped insert 24 is inserted into the inner side of the wedge-shaped slot 25, the bottom plate 1 and the stair 2 are spliced primarily by the fixed block 17, the T-shaped slide groove 20, the T-shaped slide block 21, the first spring 22, the movable block 23, the wedge-shaped insert 24 and the wedge-shaped slot 25, and then the notch 19 is clamped to the outer side of the limit column 10 by rotating the connecting strip 18, so that the right side of the bottom plate 1 and the bottom end of the stair 2 are spliced, the threaded support rod 6 can be vertically placed by utilizing the column 5 in the movable groove 4 formed by the concave part 3, and can slide in the movable groove 4 by the column 5, guide in the top of threaded support rod 6 moves the slope bayonet 12 that the cassette 11 below was seted up, accomplish the support, pass through spread groove 16 with connecting plate 15 again, be connected together the spliced pole 14 on connecting block one 9 and the connecting block two 13, then through rotating thread bush 7, it upwards perhaps slides downwards to drive removal cover 8 in the threaded support rod 6 outside, change the inclination of connecting plate 15, thereby taut threaded support rod 6 and stair 2, make the connection of each part inseparabler, and support in stair 2 below through connecting plate 15 slope, make when stair 2 uses firmly, the whole cooperation through each part of device makes the installation more firm, and dismantle simple to operate.

Further, the upper surface of bottom plate 1 is located the inboard fixedly connected with slope of concave part 3 and supports piece 26, the slope supports the upper surface of piece 26 and laminates mutually with the bottom of threaded support pole 6, and with threaded support pole 6 sliding connection, support the bottom of piece 26 and threaded support pole 6 through the slope and laminate mutually, can provide the strong point for threaded support pole 6 bottom, stability when guaranteeing threaded support pole 6 to support, and the slope bayonet 12 of seting up on the convenient cooperation cassette 11 for it is more stable when moving threaded support pole 6 and moving.

Furthermore, a positioning opening 27 is formed in the upper surface of the bottom plate 1 near the left side of the limit post 10, a rectangular frame 28 is fixedly connected to the left side of the connecting bar 18, an inclined rod 29 is fixedly connected to the outer side of the rectangular frame 28, a positioning rod 30 is slidably connected to the outer side wall of the inclined rod 29, the bottom end of the positioning rod 30 is inserted into the inner side of the positioning opening 27, a second spring 31 is sleeved on the outer side of the inclined rod 29, two ends of the second spring 31 are fixedly connected to the inner left side of the rectangular frame 28 and the left side of the positioning rod 30 respectively, the connecting bar 18 is limited in rotation after being clamped to the outer side of the limit post 10 through a notch 19 through the mutual matching of the positioning opening 27 and the positioning rod 30, the connecting bar 18 is stably connected with the limit post 10, the notch 19 is prevented from being separated from the outer side of the limit post 10, when separation is needed, the positioning rod 30 is pulled to compress the second spring 31 along the inclined rod 29 in the rectangular frame 28 to move, the positioning rod 30 is separated from the positioning opening 27, so that the connecting strip 18 and the limiting column 10 can be separated, and the whole device can be conveniently detached.

Further, the stair 2 comprises a mounting plate 201 and a tread 202, the upper surface of the mounting plate 201 is fixedly connected with a plurality of T-shaped sliding strips 32, the front surface of the tread 202 is provided with a through T-shaped long groove 33, the T-shaped sliding strips 32 are positioned on the inner side of the T-shaped long groove 33 and are in sliding connection with the T-shaped long groove 33, the front surface of the T-shaped sliding strips 32 is provided with a through hole 34, the inside of the through hole 34 is in sliding connection with two hollow pipes 35, the opposite sides of the two hollow pipes 35 are fixedly connected with a plurality of springs 36 together, the inside of the hollow pipes 35 is rotatably connected with a U-shaped limiting piece 37, the front end and the rear end of the U-shaped limiting piece 37 respectively penetrate through the front end and the rear end of the hollow pipes 35 and are respectively attached to the front surface and the rear surface of the tread 202, the front end and the rear end of the U-shaped limiting piece 37 are both fixedly connected with a wedge-shaped block 38, and the stair 2 is conveniently detached from and mounted on the tread 202 through the mounting plate 201, when the pedal 202 is mounted on the mounting plate 201, the pedal 202 and the mounting plate 201 are mounted together by sliding the T-shaped long groove 33 formed in the pedal 202 along the T-shaped slide bar 32, in the mounting process, when the pedal 202 contacts the wedge-shaped block 38, the wedge-shaped block 38 drives the hollow tube 35 outside the U-shaped limiting member 37 to move, so that the hollow tube 35 compresses the spring three 36, and the wedge-shaped block 38 approaches to and contracts into the T-shaped long groove 33, so that the T-shaped long groove 33 can be mounted on the outer side of the T-shaped slide bar 32, and after the pedal 202 is mounted, the spring three 36 recovers to drive the two hollow tubes 35 to separate, so that the wedge-shaped block 38 stretches out again and is clamped in front of and behind the T-shaped long groove 33 and the T-shaped slide bar 32, so that the T-shaped slide bar 32 is prevented from coming out of the T-shaped long groove 33, and stability of the pedal 202 mounted on the mounting plate 201 is ensured.

Furthermore, a sealing gasket 39 is fixedly connected to the inner side of the T-shaped long groove 33, so that a gap between the T-shaped long groove 33 and the T-shaped slide bar 32 is reduced, and friction force is increased, so that the pedal 202 can be stably mounted on the mounting plate 201.

Furthermore, the upper surface of the pedal 202 is fixedly connected with the non-slip mat 40, so that the friction force on the surface of the pedal 202 is increased, and the problem of slipping when a person walks is solved.

Furthermore, the outer side wall of the threaded sleeve 7 is provided with anti-slip threads 41, so that the friction force during hand holding is increased, and the threaded sleeve 7 is convenient to rotate.

Further, anticreep mouth 42 has been seted up to the lateral wall of spliced pole 14, the inboard fixedly connected with anticreep piece 43 of spread groove 16, anticreep piece 43 block is in anticreep mouth 42's inboard, when making two spliced poles 14 pass through two spread grooves 16 of seting up on connecting plate 15 and connect, block in anticreep mouth 42 through anticreep piece 43, can prevent that adjustment thread bush 7 from rotating when taking-up stair 2 and threaded support pole 6 when driving connecting plate 15 and remove, prevent that connecting plate 15 from breaking away from, and make things convenient for the dismantlement of connecting plate 15 to change.

Furthermore, the rubber pad 44 is fixedly connected to the inner side of the wedge-shaped slot 25, so that a gap between the wedge-shaped slot 25 and the wedge-shaped insert block 24 is reduced, friction is increased, and the wedge-shaped insert block 24 is more stable when being inserted into the wedge-shaped slot 25.

In conclusion, the working process of the invention is as follows: the bottom plate 1 and the stair 2 are spliced primarily through a fixed block 17, a T-shaped sliding groove 20, a T-shaped sliding block 21, a first spring 22, a movable block 23, a wedge-shaped inserting block 24 and a wedge-shaped inserting groove 25, then a notch 19 is clamped outside a limiting column 10 by rotating a connecting strip 18, the right side of the bottom plate 1 and the bottom end of the stair 2 are spliced, a threaded support rod 6 can be vertically placed by utilizing a cylinder 5 in a movable groove 4 formed in a concave part 3, the threaded support rod 6 can slide in the movable groove 4 through the cylinder 5, the top end of the threaded support rod 6 is guided to move into an inclined bayonet 12 formed below a clamping seat 11 to complete supporting, a connecting plate 15 is connected with a connecting column 14 on a first connecting block 9 and a second connecting block 13 through a connecting groove 16, and then the movable sleeve 8 is driven to slide upwards or downwards outside the threaded support rod 6 by rotating the threaded sleeve 7, change connecting plate 15's inclination to taut screw thread bracing piece 6 and stair 2 make the connection of each part inseparabler, and support in stair 2 below through connecting plate 15 slope, it is firm when making stair 2 use, and the device is whole to make the installation more firm through the cooperation of each part, and dismantles simple to operate.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an assembled timber structure stair, includes bottom plate (1) and stair (2), its characterized in that: the bottom plate (1) is located below the stair (2), the upper surface left side fixedly connected with concave part (3) of bottom plate (1), the front surface and the rear surface of concave part (3) all set up running-through movable groove (4), the inboard swing joint of movable groove (4) has cylinder (5), two the looks remote site of cylinder (5) is located the common fixedly connected with screw thread bracing piece (6) of inboard of concave part (3), the lateral wall threaded connection of screw thread bracing piece (6) has thread bush (7), the bottom of thread bush (7) is located the outside rotation of screw thread bracing piece (6) is connected with removes cover (8), the right side fixedly connected with connecting block (9) of removing cover (8), the upper surface right side fixedly connected with spacing post (10) of bottom plate (1), the top of spacing post (10) with the lower surface of stair (2) is laminated, the left side of the lower surface of the stair (2) is fixedly connected with a clamping seat (11), the lower surface of the clamping seat (11) is provided with an inclined bayonet (12), the top of the threaded support rod (6) is positioned inside the inclined bayonet (12) and is in sliding connection with the inclined bayonet (12), the top of the threaded support rod (6) is attached to the upper surface of the inner side of the inclined bayonet (12), the lower surface of the stair (2) is positioned on the right side of the clamping seat (11) and is fixedly connected with a second connecting block (13), the front surfaces of the first connecting block (9) and the second connecting block (13) are both fixedly connected with a connecting column (14), a connecting plate (15) is arranged between the two connecting columns (14), the front surface of the connecting plate (15) is provided with a connecting groove (16), and the two connecting columns (14) are respectively positioned on the inner sides of the two connecting grooves (16), and are respectively connected with the two connecting grooves (16) in a sliding manner, the bottom end of the stair (2) is fixedly connected with a fixed block (17), the left side of the fixed block (17) is fixedly connected with a connecting strip (18) through a rotating shaft, the front surface of the connecting strip (18) is positioned at the outer side of the limiting column (10) and is provided with a notch (19), the lower surface of the fixed block (17) is provided with a T-shaped sliding groove (20), the inside of the T-shaped sliding groove (20) is connected with a T-shaped sliding block (21) in a sliding manner, a first spring (22) is fixedly connected between the right side of the T-shaped sliding block (21) and the right side of the inside of the T-shaped sliding groove (20) together, the bottom of the T-shaped sliding block (21) is positioned below the fixed block (17) and is fixedly connected with a movable block (23), the bottom of the movable block (23) is fixedly connected with a wedge-shaped inserting block (24), the right side of the bottom plate (1) is provided with a wedge-shaped inserting groove (25), the wedge-shaped inserting block (24) is inserted into the inner side of the wedge-shaped inserting groove (25).

2. The fabricated wood-structure staircase of claim 1, wherein: the upper surface of the bottom plate (1) is located on the inner side of the concave part (3) and is fixedly connected with an inclined abutting block (26), and the upper surface of the inclined abutting block (26) is attached to the bottom end of the threaded support rod (6) and is in sliding connection with the threaded support rod (6).

3. The fabricated wood-structure staircase of claim 1, wherein: the upper surface of bottom plate (1) is close to spacing post (10) left side department has seted up location mouth (27), the left side fixedly connected with rectangle frame (28) of connecting strip (18), outside fixedly connected with down tube (29) of rectangle frame (28), the lateral wall sliding connection of down tube (29) has locating lever (30), the bottom of locating lever (30) peg graft with the inboard of location mouth (27), the outside cover of down tube (29) is equipped with spring two (31), the both ends of spring two (31) respectively with the inside left side of rectangle frame (28) with the left side fixed connection of locating lever (30).

4. The fabricated wood-structure staircase of claim 1, wherein: the stair (2) comprises a mounting plate (201) and a pedal (202), a plurality of T-shaped sliding strips (32) are fixedly connected to the upper surface of the mounting plate (201), a penetrating T-shaped long groove (33) is formed in the front surface of the pedal (202), the T-shaped sliding strips (32) are located on the inner side of the T-shaped long groove (33) and are in sliding connection with the T-shaped long groove (33), a penetrating through hole (34) is formed in the front surface of the T-shaped sliding strips (32), two hollow pipes (35) are connected to the inside of the penetrating through hole (34) in a sliding mode, a plurality of springs III (36) are fixedly connected between the opposite sides of the two hollow pipes (35) together, a U-shaped limiting piece (37) is rotatably connected to the inside of the hollow pipes (35), and the front end and the rear end of the U-shaped limiting piece (37) respectively penetrate through the front end and the rear end of the hollow pipes (35), and are respectively attached to the front surface and the rear surface of the pedal (202), and the front end and the rear end of the U-shaped limiting piece (37) are fixedly connected with wedge blocks (38).

5. The fabricated wood-structure staircase of claim 4, wherein: and a sealing gasket (39) is fixedly connected to the inner side of the T-shaped long groove (33).

6. The fabricated wood-structure staircase of claim 4, wherein: the upper surface of the pedal (202) is fixedly connected with a non-slip mat (40).

7. The fabricated wood-structure staircase of claim 1, wherein: the outer side wall of the threaded sleeve (7) is provided with anti-skid threads (41).

8. The fabricated wood-structure staircase of claim 1, wherein: anticreep mouth (42) have been seted up to the lateral wall of spliced pole (14), the inboard fixedly connected with anticreep piece (43) of connecting groove (16), anticreep piece (43) block in the inboard of anticreep mouth (42).

9. The fabricated wood-structure staircase of claim 1, wherein: the inner side of the wedge-shaped slot (25) is fixedly connected with a rubber pad (44).