CN212836357U - Light steel structure stair - Google Patents

Abstract

The utility model relates to a light steel construction stair, its include the stair main part that the steel construction was made and be used for being fixed in the stair main part mounting one and mounting two of wall body, mounting one and mounting two set up respectively in the upper end and the middle part of stair main part, mounting one includes a plurality of fixed connection in the A-frame and the side pipe of wall body, the hypotenuse slope of A-frame sets up down and its one of which right-angle side laminating wall setting, square pipe sets up the upper portion on a plurality of A-frame upper portion right-angle sides, square pipe is located the floor downside, the upper portion fixed connection of stair main part is in square pipe and a plurality of A-frame. The utility model discloses the relative preferred of joint strength just can effectively reduce the influence to personnel's walking.

Description

Light steel structure stair

Technical Field

The utility model belongs to the technical field of the technique of stair structure and specifically relates to a light steel construction stair is related to.

Background

The steel structure stair is famous for few fulcrums, high bearing, many shapes and high technical content. Is not easy to be influenced by the structures of the upright post, the floor and the like, and is firm. The welded steel stair is characterized by few supporting points, high bearing capacity, more shapes and high technical content. However, when the existing steel structure stair is used, if the existing steel structure stair is exposed to rainy weather, rainwater directly falls on the stair or is carried to the stair by shoes, the stair is relatively easy to slide, and the potential safety hazard is relatively large.

Chinese patent with publication number CN210288931U in the prior art discloses a prefabricated steel structure stair, which has the technical key points that: including two terraced roof beams and a plurality of integrated into one piece's ladder board, the equal rigid coupling of inside wall that two terraced roof beams are adjacent has a plurality of fixed subassemblies that are used for fixing a plurality of ladder boards respectively, the ladder board is transversal to personally submit "L" font, the ladder board includes vertical board and horizontal plate, the vertical rigid coupling of vertical board lower extreme has the drainage board along its length direction, the horizontal plate is kept away from the horizontal rigid coupling of one end of vertical board and has the breakwater of following its length direction and transversal L type of personally submitting, contained angle between horizontal plate and the vertical board is less than 90 degrees, terraced roof beam both ends still be provided with be used for with on, the coupling assembling of lower platform rigid coupling.

The above prior art solutions have the following drawbacks: above-mentioned technical scheme is when using in being used for the building of living in, and the upper and lower extreme of this technical scheme stair all is fixed through two splint, and when installation and use, the splint on upper portion can lay on the second floor, can influence personnel's walking when daily use, have certain potential safety hazard, and joint strength is not high relatively simultaneously, leads to the result of use not good relatively.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, one of the purposes of the utility model is to provide a light steel construction stair, its joint strength relatively preferred just can effectively reduce the influence to personnel's walking.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a light steel construction stair, includes the stair main part that the steel construction was made and is used for being fixed in the mounting one and the mounting two of wall body with the stair main part, mounting one and two set up respectively in the upper end and the middle part of stair main part, mounting one includes a plurality of fixed connection in the A-frame and square pipe of wall body, the hypotenuse slope of A-frame sets up and its one of them right angle limit laminating wall setting down, square pipe sets up the upper portion on a plurality of A-frame upper portion right angle limits, square pipe is located the floor downside, the upper portion fixed connection of stair main part is in square pipe and a plurality of A-frame.

Through adopting above-mentioned technical scheme, when using, because square pipe is located the downside of floor, can make after the installation, the side of going up of stair main part upper end and the floor parallel and level rather than being connected, reduce the interference that produces walking personnel when using, the area of contact that can effectual increase stair main part and mounting one through square pipe in the upper end of stair main part simultaneously, thereby can make connecting strength effectively increase between the two when can making stair main part upper end and floor parallel and level, and the ability that the triangular supports bore the load is relatively preferred, stability when optimizing the use.

The present invention may be further configured in a preferred embodiment as: the triangular support is a vertically arranged right-angle frame edge and is fixedly connected to the wall body through a plurality of chemical bolts.

Through adopting above-mentioned technical scheme, chemical bolt has that anchor power is strong, and the shape is with pre-buried, no expansion stress, and the edge distance interval is little advantage, when can effectually guarantee the joint strength of A-frame and wall body for A-frame and wall body can be dismantled and be connected, optimize the result of use.

The present invention may be further configured in a preferred embodiment as: the stair main part includes that two parallels extend's side pipe and a plurality of footboard that set up between two side pipes, the transversal C form of personally submitting of footboard and its C form open-down, the upper end fixed connection of side pipe deviates from wall body one end in square pipe and A-frame, the middle part of side pipe passes through two fixed connection of mounting in ground, the lower extreme of side pipe is connected in ground.

Through adopting the above technical scheme, when using, the load that the side pipe middle part bore can transmit to ground through the stand, do the support to the middle part of side pipe, the stand is when the construction simultaneously, can connect pre-buried backing plate in ground earlier, the connector can effectually alleviate the weight of pre-buried backing plate, be convenient for construction and installation, the stand is inserted simultaneously and is located in the spread groove, can make when the welding, the molten solder can be comparatively abundant relatively between stand and the spread groove cell wall and contact with stand and pre-buried backing plate, with the joint strength who increases between stand and the pre-buried backing plate.

The present invention may be further configured in a preferred embodiment as: the second fixing part comprises a stand column and a pre-buried base plate, the stand column is of a tubular structure, the pre-buried base plate is provided with a connector, a connecting groove is formed in the edge of the connector in a surrounding mode, the stand column is inserted into the connecting groove and fixedly connected to the connecting groove, the pre-buried base plate is fixedly connected to the wall surface or the ground through chemical bolts, and the stand column is fixedly connected to the side pipe.

Through adopting above-mentioned technical scheme, when using, two side pipes are used for doing the support to a plurality of footboards, and a mounting fixed connection is passed through in the upper end of side pipe in the floor, and two fixed connection of mounting are passed through in the middle part of side pipe in order to do the support in ground, and the lower extreme of side pipe is connected in order to do the support to self in ground.

The present invention may be further configured in a preferred embodiment as: the transversal right trapezoid and its main aspects opening up of personally submitting of spread groove, spread groove right trapezoid's hypotenuse is located it and deviates from pre-buried backing plate center one side, the lower extreme of stand and side pipe is all inserted and is established and fixed connection in the spread groove of different pre-buried backing plates.

Through adopting above-mentioned technical scheme for when making the welding, can make the outer wall and the pre-buried backing plate contact of more abundant and stand of molten solder, and make the slope lateral wall of molten solder through the spread groove guide towards the bottom of spread groove, produce the possibility of the defect of rosin joint and bubble during the welding, with optimization result of use.

The present invention may be further configured in a preferred embodiment as: the footboard is the enclosed construction along the both ends of two side pipe distribution directions, a plurality of bayonets have been seted up respectively at the both ends of footboard, the bayonet socket opening is the same with the C form opening direction of footboard, the bayonet socket inside callipers is equipped with connecting bolt, the footboard passes through connecting bolt fixed connection in side pipe.

Through adopting above-mentioned technical scheme, when the installation footboard, can be earlier in connecting bolt connection in the side pipe, then make the connecting bolt card locate in the bayonet socket, can make the footboard can dismantle and connect in the side pipe screwing up connecting bolt, can make after long-term the use, when needing to change the footboard, only need not hard up connecting bolt, then upwards pull out the footboard and can do the change.

The present invention may be further configured in a preferred embodiment as: the both ends of footboard are provided with the backing plate respectively, are located a plurality of connecting bolts of the same end of footboard all wear to locate same backing plate, the backing plate is located the footboard inside.

Through adopting above-mentioned technical scheme, after the installation, the backing plate can be effectual when making connecting bolt fasten, increase the atress area at bayonet socket border, so that the ability that the footboard bore load when using is better relatively, effectively reduce the bayonet socket and take place the possibility of deformation when using, and the backing plate card is located in the footboard this moment, can effectively reduce when using, the probability that the relative bayonet socket of connecting bolt breaks away from, simultaneously when dismantling the footboard, only need to make connecting bolt not hard up, and make the backing plate be certain angle relative to the footboard inner wall that its butt, so that the backing plate can break away from the footboard through the C form opening of footboard, the dismouting of being convenient for is changed when making the relative side pipe of footboard keep the joint strength of relative preferred.

The present invention may be further configured in a preferred embodiment as: the base plate is provided with a plurality of annular bulges towards one side of the center of the pedal, the connecting bolt penetrates through the annular bulges, and the outer wall of each annular bulge and the base plate are in smooth transition.

Through adopting above-mentioned technical scheme, when using, annular protruding can further reduce the backing plate and produce the possibility of deformation to optimize its result of use.

The present invention may be further configured in a preferred embodiment as: it is a plurality of be provided with two reinforcements between the A-frame, two the reinforcement is connected respectively in two bights of a plurality of A-frame upper ends, adjacent two be provided with the stiffener between the A-frame, the both ends of stiffener fixed connection respectively in two adjacent A-frame, the both ends difference fixed connection of stiffener are in two reinforcements.

Through adopting above-mentioned technical scheme, when vibration or load are great, the A-frame can bear certain torque along the horizontal direction, and the reinforcement and stiffener can do the decomposition and transmit to the wall body to the power that the torque produced this moment to stability when optimizing A-frame uses.

To sum up, the utility model discloses a following at least one useful technological effect:

1. when the stair is used, the square pipe is positioned on the lower side surface of the floor, so that after the stair is installed, the upper side surface of the upper end of the stair main body is flush with the floor connected with the stair main body, interference to walking personnel during use is reduced, meanwhile, the contact area between the stair main body and the fixing piece I can be effectively increased through the square pipe, the connection strength between the stair main body and the fixing piece I can be effectively increased while the upper end of the stair main body is flush with the floor, and the triangular support has relatively better load bearing capacity so as to optimize stability during use;

2. after the installation, the backing plate can be effectual when making connecting bolt fastening, increase the atress area at bayonet socket border, so that the ability that the footboard bore load when using is better relatively, effectively reduce the bayonet socket and take place the possibility of deformation when using, and the backing plate card is located in the footboard this moment, can effectively reduce when using, the probability that the relative bayonet socket of connecting bolt breaks away from, simultaneously when dismantling the footboard, only need to make connecting bolt not hard up, and make the backing plate be certain angle relative to the footboard inner wall of its butt, so that the backing plate can break away from the footboard through the C form opening of footboard, the dismouting of being convenient for is changed when making the relative side pipe of footboard keep the joint strength of relative preferred.

Drawings

Fig. 1 is a schematic structural diagram of the first embodiment.

Fig. 2 is a schematic view of the pre-buried backing plate according to the first embodiment, which is mainly used for showing the structure of the pre-buried backing plate according to the first embodiment.

Fig. 3 is a schematic overall structure diagram of the second embodiment.

Fig. 4 is a schematic view of the pre-buried backing plate of the second embodiment, which is mainly used for showing the structure of the pre-buried backing plate of the second embodiment.

Fig. 5 is an exploded view of a part of the structure of the first embodiment, which is mainly used to show the structure of the pedal and the cushion plate of the second embodiment.

Fig. 6 is an exploded view of a second embodiment of the first fixing member, which is mainly used to show the first fixing member of the second embodiment.

In the figure, 1, a stair body; 11. a side tube; 12. a pedal; 121. a bayonet; 122. a base plate; 123. an annular projection; 2. a first fixing part; 21. a triangular bracket; 211. a reinforcement; 212. a reinforcing bar; 22. a square tube; 3. a second fixing part; 31. a column; 32. pre-burying a base plate; 321. a connecting port; 322. and connecting the grooves.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example one

Referring to fig. 1, for the utility model discloses a light steel construction stair, including the stair main part 1 that adopts the steel construction to make and be used for being fixed in a plurality of mounting one 2 and a plurality of mounting two 3 of wall body or wall with it. The first fixing part 2 and the second fixing part 3 are uniformly distributed at the upper end and the middle part of the stair main body 1 respectively.

The first fixing piece 2 comprises a plurality of triangular brackets 21 and square tubes 22 which are horizontally distributed; a triangular support 21 is right angled triangle's frame column structure, and two right angle frame limits of triangular support 21 laminate respectively in the wall with be the level setting, and the right angle frame limit that triangular support 21 is the level setting is its upper end, and the vertical right angle frame limit of triangular support 21 is through a plurality of chemical bolt fixed connection in the wall body to when guaranteeing the joint strength of triangular support 21 and wall body, make triangular support 21 can dismantle with the wall body and be connected, optimize the result of use.

The square pipe 22 is erected and fixedly connected to the right-angle frame edges of the plurality of triangular supports 21, and the length direction of the square pipe 22 is perpendicular to the triangular frame edges of the triangular supports 21. The square pipe 22 can be fixedly connected to the triangular supports 21 through bolts or welding, the square pipe 22 is located on the lower side face of the floor, and the upper portion of the stair main body 1 is fixedly connected to the outer wall of the square pipe 22 and one end, away from the wall, of the triangular supports 21 through bolts or welding, so that the upper side face of the upper end of the stair main body 1 is flush with the floor connected with the stair main body.

So that when using, because square pipe 22 is located the downside of floor, can make after the installation, the side of going up of stair main part 1 upper end is rather than the floor parallel and level that connects, reduce the interference that produces walking personnel when using, the area of contact that can effectual increase stair main part 1 and mounting 2 through square pipe 22 in the upper end of stair main part 1 simultaneously, thereby can make connecting strength effectively increase between the two when can making stair main part 1 upper end and floor parallel and level, and the ability that triangular supports 21 bears the load is preferred relatively, stability when using in order to optimize.

Referring to fig. 1, the stair body 1 includes two side tubes 11 parallel to each other and a plurality of treads 12 disposed between the two side tubes 11. The cross section of the pedal 12 is C-shaped, the C-shaped opening faces downwards, the upper end face of the side pipe 11 is welded or flanged to the outer wall of the square pipe 22 and one end, away from the wall body, of the triangular supports 21. The middle part of the side pipe 11 is fixedly connected to the ground through a second fixing part 3, and the lower end of the side pipe 11 is connected to the ground. Wherein, the footboard 12 is perpendicular to the position of the side pipe 11 connected with the footboard, the two ends of the footboard 12 along the distribution direction of the two side pipes 11 are respectively fixedly connected with the outer wall of the side pipe 11 by welding or bolts, the cross section of the side pipe 11 is rectangular, the corner of the stair body 1 is provided with a transition plate for transition, and the transition plate is horizontally arranged.

When the side pipe type pedal support is used, the two side pipes 11 are used for supporting the pedals 12, the upper ends of the side pipes 11 are fixedly connected to a floor slab through the first fixing piece 2, the middle parts of the side pipes 11 are fixedly connected to the ground through the second fixing piece 3 to be supported, and the lower ends of the side pipes 11 are connected to the ground to be supported.

Referring to fig. 1 and 2, the second fixing element 3 includes a tubular stand column 31 and an embedded backing plate 32, the stand column 31 is vertically disposed, the embedded backing plate 32 is in a rectangular plate-shaped structure, the embedded backing plate 32 is provided with a connecting port 321 penetrating through the embedded backing plate along the thickness direction of the embedded backing plate, a connecting groove 322 is formed in the edge surrounding the connecting port 321, and the stand column 31 is inserted into and welded to the connecting groove 322. Wherein, pre-buried backing plate 32 passes through chemical bolt fixed connection in wall or ground, and the upper end fixed connection of stand 31 is in the outer wall of side pipe 11.

In order to make when using, the load that side pipe 11 middle part bore can transmit to ground through stand 31, support in order to the middle part of side pipe 11, stand 31 is when the construction simultaneously, can connect in ground with embedded backing plate 32 earlier, connector 321 can effectually alleviate the weight of embedded backing plate 32, be convenient for construction and installation, stand 31 inserts simultaneously and locates in connecting groove 322, can make when the welding, the molten solder can be comparatively abundant between stand 31 and the connecting groove 322 cell wall and contact with stand 31 and embedded backing plate 32, in order to increase the joint strength between stand 31 and the embedded backing plate 32.

Example two

Referring to fig. 3 and 4, the difference from the first embodiment is that the cross section of the connecting groove 322 is in a right trapezoid structure, and the large end of the connecting groove is opened upward, the oblique side of the right trapezoid of the cross section of the connecting groove 322 is located on the side away from the center of the connecting port 321, the lower ends of the upright column 31 and the side pipe 11 are both provided with the embedded backing plate 32, and the lower ends of the upright column 31 and the side pipe 11 are both inserted into and welded in the connecting grooves 322 of different embedded backing plates 32. When the welding device is used for welding, the molten solder can be more fully contacted with the outer wall of the upright column 31 and the embedded base plate 32, and the molten solder is guided towards the bottom of the connecting groove 322 through the inclined side wall of the connecting groove 322, so that the possibility of generating the defects of cold joint and bubbles during welding is reduced, and the using effect is optimized.

Referring to fig. 3 and 5, two ends of the pedal 12 in the horizontal direction are of a closed structure, at least two bayonets 121 are respectively formed at two ends of the pedal 12, the opening of each bayonet 121 is in the same direction as the opening of the C-shaped opening of the pedal 12, a connecting bolt is clamped in each bayonet 121, and the pedal 12 is fixedly connected to the side tube 11 through the connecting bolt. So that when installation footboard 12, can be earlier with connecting bolt connection in side pipe 11, then make the connecting bolt card locate bayonet 121 in, can make footboard 12 can dismantle and connect in side pipe 11 screwing up connecting bolt, can make after long-term the use, when needing to change footboard 12, only need not hard up connecting bolt, then upwards pull out footboard 12 and can do the change.

Both ends of footboard 12 are provided with backing plate 122 respectively, a plurality of connecting bolts that are located footboard 12 and are the same end all wear to locate same backing plate 122, backing plate 122 is offered the connecting hole that the diameter is greater than connecting bolt or is the rectangular shape hole that the level extends by the position that connecting bolt wore to establish, so that backing plate 122 laminates in the inner wall at footboard 12 both ends, backing plate 122 can be blocked and locate in footboard 12, connecting bolt is not hard up, make backing plate 122 become certain angle rather than the footboard 12 inner wall of laminating, the C form opening of backing plate 122 accessible footboard 12 this moment. Wherein, after being installed, the backing plate 122 is clamped inside the pedal 12.

After the installation, backing plate 122 can be effectual when making connecting bolt fasten, increase the area of stress at bayonet 121 border, so that the ability that footboard 12 bore load when using is better relatively, effectively reduce the bayonet 121 and take place the possibility of deformation when using, and backing plate 122 card is located in footboard 12 this moment, can effectively reduce when using, the probability that connecting bolt breaks away from relative bayonet 121, simultaneously when dismantling footboard 12, only need to make connecting bolt become flexible, and make backing plate 122 be certain angle relative to its footboard 12 inner wall that butts, so that backing plate 122 can break away from footboard 12 through the C form opening of footboard 12, make the dismouting of being convenient for change when making footboard 12 relative side pipe 11 keep the joint strength of relative preferred.

An annular protrusion 123 is arranged around the connecting bolt, the annular protrusion 123 is integrally formed on the backing plate 122, the diameter of the inner wall of the annular protrusion 123 is larger than that of the connecting bolt or the cross section of the inner wall of the annular protrusion is made to be long-strip-shaped, and preferably the cross section of the inner wall of the annular protrusion 123 is long-strip-shaped. Wherein, the outer wall of the annular protrusion 123 and the plate surface of the backing plate 122 are in smooth transition. So that the annular protrusion 123 can further reduce the possibility of deformation of the backing plate 122 during use, thereby optimizing the use thereof.

Referring to fig. 6, in order to increase the stability of the upper end of the stair body 1 in use, the plurality of triangular brackets 21 are provided with two reinforcing members 211 for increasing the stability of the stair body in use, the reinforcing members 211 are respectively connected to two right-angled corners of the upper portions of the plurality of triangular brackets 21, a reinforcing rod 212 is arranged between two adjacent triangular brackets 21, two ends of the reinforcing rod 212 are respectively fixedly connected to two adjacent triangular brackets 21, and two ends of the reinforcing rod 212 are also respectively fixedly connected to two reinforcing members 211. When vibration or a large load occurs, the triangular bracket 21 can bear a certain torque along the horizontal direction, and at the moment, the reinforcing piece 211 and the reinforcing rod 212 can decompose and transmit the force generated by the torque to the wall body, so that the stability of the triangular bracket 21 in use is optimized.

After the stair body 1 is installed, a guardrail can be arranged on the side pipe 11 far away from one side of the wall body to be used as protection.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (9)

1. The utility model provides a light steel construction stair, includes stair main part (1) that the steel structure made and is used for being fixed in mounting (2) and mounting two (3) of wall body with stair main part (1), mounting (2) and mounting two (3) set up respectively in the upper end and the middle part of stair main part (1), its characterized in that: one (2) of mounting include a plurality of fixed connection in the A-frame (21) and the side pipe (22) of wall body, the hypotenuse slope of A-frame (21) sets up down and one of them right angle limit laminating wall setting, side pipe (22) set up the upper portion on a plurality of A-frame (21) upper portion right angle limit, side pipe (22) are located the floor downside, the upper portion fixed connection in side pipe (22) and a plurality of A-frame (21) of stair main part (1).

2. The stair of claim 1, wherein: the triangular support (21) is a vertically arranged right-angle frame edge and is fixedly connected to the wall body through a plurality of chemical bolts.

3. The stair of claim 1, wherein: stair main part (1) include two parallel extended side pipe (11) and a plurality of footboard (12) that set up between two side pipe (11), the transversal C form of personally submitting of footboard (12) and its C form open-down, the upper end fixed connection of side pipe (11) deviates from wall body one end in square pipe (22) and triangular supports (21), the middle part of side pipe (11) is through two (3) fixed connection in ground of mounting, the lower extreme of side pipe (11) is connected in ground.

4. The stair of claim 3, wherein: fixing part two (3) are including stand (31) and the embedded backing plate (32) that are tubular structure, connector (321) have been seted up in embedded backing plate (32), encircle connecting groove (322) have been seted up at the border of connector (321), stand (31) are inserted and are established and fixed connection in connecting groove (322), embedded backing plate (32) are through chemical bolt fixed connection in wall or ground, stand (31) fixed connection is in side pipe (11).

5. The stair of claim 4, wherein: the transversal right trapezoid and its main aspects opening up of personally submitting of spread groove (322), spread groove (322) right trapezoid's hypotenuse is located it and deviates from pre-buried backing plate (32) center one side, the lower extreme of stand (31) and side pipe (11) all inserts spread groove (322) of establishing and fixed connection in different pre-buried backing plates (32).

6. The stair of claim 3, wherein: footboard (12) are the enclosed construction along the both ends of two side pipes (11) distribution direction, a plurality of bayonet sockets (121) have been seted up respectively at the both ends of footboard (12), bayonet socket (121) opening is the same with the C form opening direction of footboard (12), bayonet socket (121) inside callipers are equipped with connecting bolt, footboard (12) pass through connecting bolt fixed connection in side pipe (11).

7. The stair of claim 6, wherein: both ends of footboard (12) are provided with backing plate (122) respectively, are located a plurality of connecting bolts of the same end of footboard (12) all wear to locate same backing plate (122), backing plate (122) are located footboard (12) inside.

8. The stair of claim 7, wherein: the base plate (122) is provided with a plurality of annular bulges (123) towards one side of the center of the pedal (12) where the base plate is located, the connecting bolts penetrate through the annular bulges (123), and smooth transition is formed between the outer wall of each annular bulge (123) and the base plate (122).

9. The stair of claim 1, wherein: a plurality of be provided with two reinforcement (211) between A-frame (21), two reinforcement (211) are connected respectively in two bights of a plurality of A-frame (21) upper end, adjacent two be provided with stiffener (212) between A-frame (21), fixed connection is respectively in two adjacent A-frame (21) at the both ends of stiffener (212), and fixed connection is respectively in two reinforcements (211) at the both ends of stiffener (212).

Images