CN210342488U

CN210342488U - Connecting piece mounting structure of assembled stair

Info

Publication number: CN210342488U
Application number: CN201921020661.5U
Authority: CN
Inventors: 吴碧梅; 刘玲玲; 武文文
Original assignee: Xiamen Tefang International Design Co Ltd
Current assignee: Xiamen Tefang International Design Co Ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-04-17
Anticipated expiration: 2029-07-02

Abstract

The utility model discloses a connecting piece mounting structure of assembled stair relates to assembled building structure technical field, has solved assembled stair just condemned technical problem before life reachs. The stair component is characterized by comprising a screw rod, a nut, a pin key hole and a thread sleeve, wherein the pin key hole is arranged on the stair component and matched with the screw rod and the nut, the pin key hole comprises a round hole and a cavity which are respectively communicated with the upper surface and the lower surface of the stair component, the thread sleeve is fixed in a similar stair beam, the lower end of the screw rod is in threaded connection with the thread sleeve, the upper surface of the stair component is provided with a first mounting groove which is circumferentially arranged on the outer wall of the round ring hole, and a decorative cover with the upper surface coincident with the upper surface of the stair component is arranged in the; the utility model has the advantages of ensure assembled stair life.

Description

Connecting piece mounting structure of assembled stair

Technical Field

The utility model relates to an assembly type building structure technical field, more specifically say, it relates to a connecting piece mounting structure of assembled stair.

Background

In the prior art, the stair component of the assembly type stair can be prefabricated in a processing plant or a construction site, and is hoisted and assembled during construction, so that the assembly type stair is easy to manufacture in batches, convenient and fast to assemble, and low in cost, and is widely popularized and used; wherein, because the stair component is prefabricated earlier the back installation, consequently, for the joint strength who ensures between assembled stair and the upper and lower floor stair beam, the connecting piece that is used for connecting stair component and stair beam need be installed on the assembled stair.

As shown in fig. 1, the connecting member of the prefabricated staircase in the prior art generally comprises a screw rod 4 fixed on a staircase beam 1 and a nut 3 in threaded connection with the screw rod 4, wherein a vertically arranged pin key hole 3 is formed at one end of a staircase member 2 connected with the staircase beam 1, the upper end of the pin key hole 3 is a circular hole 31 with the diameter of 60mm, and the lower end of the pin key hole is a cavity 32 with the diameter of 50 mm; when the device is used, the screw rod 4 penetrates through the pin key hole 3, the upper end of the screw rod is clamped and fixed by the nut 5, the lower end of the screw rod is fixed in the ground 1, and after the screw rod 4 is fixed, concrete mortar 6 is poured into the round hole 31 to cover the pin key hole.

However, when an earthquake occurs, the stair component may shift, so that the screw rod may bend greatly, and at this time, the strength of the screw rod may be greatly reduced, so as to affect the connection strength between the stair component and the stair beam, wherein the screw rod and the nut are respectively fixed in the stair beam and the stair component by pouring, so that in order to prevent the stair component from collapsing, only the assembled stair communication connection component may be removed and replaced together, so that the stair component may be scrapped before the expected service life, resulting in great waste, and therefore, improvement is required.

SUMMERY OF THE UTILITY MODEL

To the technical problem that has now, an object of the utility model is to provide a connecting piece mounting structure of assembled stair, it has the advantage of ensureing assembled stair life.

In order to achieve the above purpose, the utility model provides a following technical scheme: including screw rod and nut, still including setting up on the stair component and with screw rod and nut complex round pin keyhole, the round hole and the cavity of round hole and cavity with stair component upper and lower surface intercommunication respectively are still including being fixed in the thread bush in the similar stair roof beam, the lower extreme and the thread bush threaded connection of screw rod, the upper surface of stair component is provided with the first mounting groove that the outer wall circumference of annular hole set up, install the dress trim cover of upper surface and stair component upper surface coincidence in the first mounting groove.

Through adopting above-mentioned technical scheme, when leading to the screw rod to take place great bending because the stair component removes, the staff can open the dress trim cover so that the screw rod exposes, then unscrew the nut, reuse hoisting equipment such as loop wheel machine hoist with the stair component so that the stair component separates with the stair beam, then directly twist out and change new screw rod with the screw rod of buckling from the thread bush by the staff, install the stair component shaping again on the stair beam and twist the nut again so that screw rod and nut cooperation press from both sides tight once more and fix on the stair beam, it can to cover the round pin keyhole at last with dress trim cover reinstallation in first mounting groove.

The utility model discloses further set up to: the stair beam is provided with a containing groove for the installation of the threaded sleeve, the upper surface of the stair beam is provided with a second mounting groove communicated with the containing groove, a mounting ring arranged in the second mounting groove is fixed in the mounting ring, and a limiting ring which is fixed on the mounting ring in a bolt locking mode and is tightly attached to the upper end face of the threaded sleeve is arranged in the second mounting groove.

By adopting the technical scheme, the threaded sleeve placed in the accommodating groove can be clamped and fixed in the stair beam through the limiting ring fixed in the second mounting groove by the locking pair, so that the threaded sleeve can be simply detachably mounted, and the thread of the threaded sleeve can be replaced when damaged; the existing stair beam is generally of a concrete structure and is relatively fragile in material, the connecting strength between the bolt and the stair beam can be ensured through the mounting ring fixed on the stair beam, and the clamping and fixing capacity of the bolt on the limiting ring can be ensured.

The utility model discloses further set up to: the axis circumference equidistance that is provided with the multichannel ring storage tank in the storage tank is arranged and transversal spacing arch of personally submitting class isosceles trapezoid shape setting, be provided with the spacing groove of multichannel respectively with each spacing protruding looks joint on the outer wall of thread bush.

By adopting the technical scheme, the thread bush can be subjected to radial resistance through the matching between the limiting protrusion and the limiting groove, and the thread bush can be prevented from rotating along with the screw rod when the screw rod is screwed.

The utility model discloses further set up to: the lower surface of the mounting ring is provided with a thin shell attached to the inner wall of the accommodating groove, and the thin shell covers each limiting protrusion.

Through adopting above-mentioned technical scheme, current stair roof beam generally is concrete structure, and the material is more fragile relatively, has to cause the oppression to spacing arch easily when the thread bush has the rotation trend, leads to spacing arch to break easily, can play the effect of dispersed stress and protection to each spacing arch through setting up the thin shell on the collar, can play the effect of avoiding spacing arch to break.

The utility model discloses further set up to: and a plurality of convex ribs arranged along the height direction of the thin shell are arranged on the outer walls of the mounting ring and the thin shell.

Through adopting above-mentioned technical scheme, can increase the area of contact of collar and thin shell and stair beam through protruding muscle, and can play the effect of hindrance when the thin shell receives the pulling force of circumference, effectively improve the joint strength between thin shell and the stair beam.

The utility model discloses further set up to: the pin key hole further comprises a communicating hole, the upper end and the lower end of the communicating hole are communicated with the round hole and the cavity respectively, the inner diameter of the communicating hole is larger than the outer diameter of the screw rod, a limiting plate is mounted at the bottom of the round hole, and the limiting plate is attached to the outer wall of the screw rod.

Through adopting above-mentioned technical scheme, current stair roof beam generally is concrete structure, the material is more fragile relatively, when the stair component is removing so that the screw rod takes place to buckle, the screw rod causes the oppression to the intercommunicating pore easily, lead to the intercommunicating pore to take place to burst easily, through increasing the internal diameter of intercommunicating pore so that the intercommunicating pore can not directly take place to contact with the screw rod, and utilize the cooperation between limiting plate and screw rod and the round hole to ensure that nut and round hole bottom have sufficient area of contact, thereby reach and ensure nut and press from both sides tight intensity, play the effect of avoiding the intercommunicating pore to take place.

The utility model discloses further set up to: the inner wall of the cavity is provided with a plurality of reinforcing ribs which are circumferentially arranged along the axis of the annular cavity, and the upper end of each reinforcing rib is connected with the top of the cavity.

Through adopting above-mentioned technical scheme, can increase the compressive capacity of cavity bottom through the strengthening rib for when great pressure was received at the top of cavity, the top of cavity is difficult for taking place to crack.

The utility model discloses further set up to: the upper surface of the stair component is provided with inner grooves which are formed in the circumferential direction of the axis of the second mounting groove of the multiple rings at equal intervals, and each inner groove is communicated with the inner wall of the second mounting groove.

Through adopting above-mentioned technical scheme, be convenient for the staff to scratch the dress trim cover with the finger through the inner groovy.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the detachable connection relationship between the screw rods and the stair girders is realized through the thread sleeves, and the decorative cover is used for replacing concrete mortar to cover the key groove holes, so that the connecting pieces and the stair members can be reused only by replacing the screw rods, and the cost is effectively saved;

(2) can play the effect of protection to connecting piece and stair roof beam and stair component demountable installation's part through thin shell, collar and limiting plate, prevent to dismantle to cause the damage to concrete structure's stair roof beam and stair component when changing the connecting piece many times.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a schematic structural diagram of the present embodiment;

FIG. 3 is an enlarged view of part A of FIG. 2;

FIG. 4 is a schematic view showing the combination of the thin shell with the stair nosing and the threaded sleeve according to this embodiment;

fig. 5 is a partial enlarged schematic view of B in fig. 2 according to the present embodiment.

Reference numerals: 1. a stair stringer; 11. a containing groove; 111. a limiting bulge; 12. a second mounting groove; 13. a mounting ring; 131. a thin shell; 132. a rib is protruded; 14. a limiting ring; 141. a rubber gasket; 2. a stair member; 21. an inner groove; 22. a limiting plate; 3. a pin key hole; 31. a circular hole; 32. a cavity; 321. reinforcing ribs; 33. a communicating hole; 34. a first mounting groove; 4. a screw; 5. a nut; 6. concrete mortar; 7. a threaded sleeve; 71. a limiting groove; 8. and (6) a decorative cover.

Detailed Description

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

A connecting piece mounting structure of an assembly type stair comprises a screw rod 4 with the lower end detachably mounted in a stair beam 1 and a nut 5 which is detachably mounted on a stair member 2 and is in threaded connection with the screw rod 4 so as to clamp and fix the stair member 2 on the stair beam 1, as shown in figure 2; wherein, install in stair beam 1 with the lower extreme screw-thread fit of screw rod 4 in order to be used for supplying screw rod 4 demountable installation's thread bush 7 in stair beam 1, be provided with in stair component 2 about the end respectively with stair component 2 upper and lower surface intercommunication in order to be used for supplying screw rod 4 and nut 5 complex round pin key hole 3, install the upper surface in round pin key hole 3 and coincide in stair component 2 surface in order to be used for hiding the dress trim 8 of round pin key hole 3.

Referring to fig. 2 and 3, a receiving groove 11 for mounting the threaded sleeve 7 is formed in the stair nosing 1, and a second mounting groove 12 is formed in the upper surface of the stair nosing 1, is coaxially disposed with the receiving groove 11, and is communicated with the upper end of the receiving groove 11; wherein, be provided with in second mounting groove 12 and adopt the mode of pouring fixed with stair roof beam 1 integrated into one piece's collar 13, still be provided with in second mounting groove 12 through bolt locking mode demountable installation at collar 13 up end and with the up end of installing in storage tank 11 thread bush 7 closely laminate in order to be used for pressing from both sides tight spacing ring 14 of fixing in storage tank 11 with thread bush 7.

Wherein, all be provided with rubber gasket 141 on the upper and lower terminal surface of spacing ring 14, when spacing ring 14 was installed in second mounting groove 12, the one side that two rubber gasket 141 opposite set up closely laminated with the upper surface of collar 13 and the lower surface of stair component 2 respectively.

Referring to fig. 3 and 4, a plurality of limiting protrusions 111 are arranged on the inner wall of the accommodating groove 11 in a circumferentially equidistant manner, the cross section of each limiting protrusion 111 is in an isosceles trapezoid-like shape, a thin shell 131 is arranged on the lower surface of the mounting ring 13, the thin shell is attached to one outer wall of the accommodating groove 11 and the inner wall of the mounting ring 7, the thin shell is attached to the outer wall of the threaded sleeve 7 arranged in the accommodating groove 11, a plurality of limiting grooves 71 are arranged on the outer wall of the threaded sleeve 7 in a circumferentially equidistant manner, and when the threaded sleeve 7 is arranged in the accommodating groove 11, the limiting protrusions 111 are respectively clamped in the limiting grooves 71; wherein, the outer walls of the mounting ring 13 and the thin shell 131 are provided with a plurality of convex ribs 132 which are arranged along the height direction of the thin shell 131 and are embedded in the stair beam 1.

Referring to fig. 2 and 5, the pin key hole 3 includes a cavity 32, a communication hole 33, a circular hole 31 and a first mounting groove 34, which are sequentially arranged from bottom to top and are communicated with each other, the cavity 32, the communication hole 33, the circular hole 31 and the first mounting groove 34 are coaxially arranged, and a plurality of reinforcing ribs 321 are arranged on the inner wall of the cavity 32, the axes of the ring cavity 32 are circumferentially arranged, and the upper ends of the reinforcing ribs are connected with the top of the cavity 32; wherein, dress trim cover 8 is installed in first mounting groove 34 and the surface coincidence of upper surface and stair component 2, is provided with the axis circumference equidistance of the first mounting groove 34 of multichannel ring at the surface of stair component 2 and arranges and be linked together with first mounting groove 34 for the staff digs out inner groovy 21 of dress trim cover 8.

When the stair component 2 is stably installed on the stair beam 1, the upper end of the screw rod 4 sequentially penetrates through the cavity 32 and the communication hole 33 and extends into the round hole 31, and the nut 5 and the part of the screw rod 4 extending into the round hole 31 are in threaded connection to clamp and fix the stair component 2.

The inner diameter of the communicating hole 33 is larger than the outer wall of the screw rod 4, and the bottom of the round hole 31 is provided with a limiting plate 22 which is sleeved on the outer wall of the screw rod 4 and the lower surface of which is attached to the bottom of the round hole 31; when the nut 5 is engaged with the screw 4 to clamp and fix the stair member 2 to the stair nosing 1, the nut 5 is engaged with the upper surface of the stopper plate 22.

The working process of the utility model is as follows:

when a new screw 4 needs to be replaced, firstly, a worker takes down the decorative cover 8 and screws out the nut 5, then the stair component 2 is lifted upwards by using a crane to separate the stair component 2 from the stair beam 1, when the stair component 2 is separated from the stair beam 1 to expose the upper end of the screw 4, the worker directly screws the screw 4 out of the thread sleeve 7 and replaces the screw, at the moment, if the screw 4 cannot be separated from the thread sleeve 7 due to deformation, the worker can disassemble the limiting ring 14, and then the screw 4 is communicated with the thread sleeve 7 and is taken down and replaced together; after the screw rods 4 are replaced, the worker uses the crane again to hoist the stair component 2 on the stair beam 1 again, and finally the worker screws the nuts 5 on the screw rods 4 to clamp and fix the stair component 2 on the stair beam 1 and covers the decorative cover 8.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a connecting piece mounting structure of assembled stair, includes screw rod (4) and nut (5), still including set up on stair component (2) and with screw rod (4) and nut (5) complex round pin key hole (3), round hole (31) and cavity (32) that round pin key hole (3) communicate with stair component (2) upper and lower surface respectively, its characterized in that: still including being fixed in screw thread cover (7) in similar stair roof beam (1), the lower extreme and the screw thread cover (7) threaded connection of screw rod (4), the upper surface of stair component (2) is provided with first mounting groove (34) that the outer wall circumference of ring round hole (31) set up, install decorative cover (8) of upper surface and stair component (2) upper surface coincidence in first mounting groove (34).

2. The attachment structure of an assembled staircase according to claim 1, wherein: be provided with storage tank (11) that are used for supplying a thread bush (7) section of thick bamboo installation on stair roof beam (1), the upper surface of stair roof beam (1) is provided with second mounting groove (12) with storage tank (11) intercommunication, second mounting groove (12) internal fixation has collar (13) that ring storage tank (11) set up, be provided with spacing ring (14) that are fixed in on collar (13) and closely laminate with the up end of thread bush (7) through the mode of bolt lock pair in second mounting groove (12).

3. The attachment structure of an assembled staircase according to claim 2, wherein: the axis circumference equidistance that is provided with multichannel ring storage tank (11) in storage tank (11) is arranged and transversal spacing arch (111) of personally submitting class isosceles trapezoid shape setting, be provided with spacing groove (71) of multichannel respectively with each spacing arch (111) looks joint on the outer wall of thread bush (7).

4. The attachment structure of an assembled staircase according to claim 2, wherein: the lower surface of the mounting ring (13) is provided with a thin shell (131) attached to the inner wall of the accommodating groove (11), and the thin shell (131) covers the limiting protrusions (111).

5. The attachment structure of an assembled staircase according to claim 4, wherein: the outer walls of the mounting ring (13) and the thin shell (131) are provided with a plurality of convex ribs (132) which are distributed along the height direction of the thin shell (131).

6. The attachment structure of an assembled staircase according to claim 1, wherein: the pin key hole (3) further comprises a communicating hole (33) with the upper end and the lower end communicated with the round hole (31) and the cavity (32) respectively, the inner diameter of the communicating hole is larger than the outer diameter of the screw rod (4), a limiting plate (22) is installed at the bottom of the round hole (31), and the limiting plate (22) is attached to the outer wall of the screw rod (4).

7. The attachment structure of an assembled staircase according to claim 1, wherein: the inner wall of the cavity (32) is provided with a plurality of reinforcing ribs (321) which are circumferentially arranged along the axis of the cavity (32), and the upper end of each reinforcing rib (321) is connected with the top of the cavity (32).

8. The attachment structure of an assembled staircase according to claim 1, wherein: the upper surface of the stair component (2) is provided with a plurality of inner grooves (21) which are distributed at equal intervals in the circumferential direction of the axis of the second mounting groove (12), and each inner groove (21) is communicated with the inner wall of the second mounting groove (12).