CN1177389A

CN1177389A - Circular staircase

Info

Publication number: CN1177389A
Application number: CN95197727A
Authority: CN
Inventors: 瓦尔特·瓦亨费尔德
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-02-03
Filing date: 1995-04-15
Publication date: 1998-03-25
Also published as: ES2108579T3; WO1996023941A1; HUT77763A; DK0757741T3; PL179233B1; PL321598A1; RU2133808C1; DE19503582A1; EP0757741A1; GR3024953T3; DE59500693D1; CZ290211B6; DE19503582C2; EP0757741B1; ATE158372T1; CZ27897A3

Abstract

A circular staircase has individual steps made of stone, in particular natural stone, mounted on the central newel. The steps have each a reinforcing member (4) with one end that may be joined to the newel (2) and another end that may be pre-stressed by a pre-stressing element (7) against the step (3).

Description

Circular staircase

The present invention relates to a kind of Circular staircase, it has the made of stones especially natural ladder made of stones that is contained in one by one on the center pillar, and ladder has girth member.

Known dissimilar Circular staircase.For example, known have a kind of Circular staircase, and its ladder made of stones is layered on steel tank or the steel cantilever shalving, and steel tank or steel cantilever shalving are connected with center pillar.Making trouble of this Circular staircase with steel tank or steel cantilever shalving is because must separately make steel tank and cantilever shalving.Radius has the steel frame and often also has in the Circular staircase of steel frame at the inside radius place of Circular staircase outside, and situation also is like this, and here the inside and outside of steel tank is welded on the steel frame.This structural requirement accounts for very big place, so and because the welding processing of trouble is also quite expensive.The manufacturing workload of these Circular staircases is always very huge.

The Circular staircase of the described type of more known in addition prefaces, wherein, ladder is made up of two horizontally separated layers, glue between this is two-layer into the bracing means with glass fabric system, and each ladder supports mutually up and down by bolt.

In this Circular staircase, require to make each ladder very exactly and assemble each ladder exactly, because on the one hand between each ladder, do not allow to form the gap of any level, must guarantee that on the other hand last top ladder directly abuts in the floor and leaves a blank on the end face of locating.This Circular staircase external diameter is limited to 200cm.These class stair almost can not use outdoor, because because the influence of severe cold exists the danger that these two stone floor are thrown off in the glass fabric district.

Therefore the objective of the invention is to make a kind of Circular staircase, it can be made and assemble easily, and in addition, each ladder does not connect up and down mutually, thus each ladder free arm be fixed on the center pillar.

By the present invention for reaching this purpose, girth member can be connected with center pillar at the one end, can add pretightning force with respect to ladder with a clamping element at its other end, also in other words, this specific design is that shaft-like girth member passes ladder along step length, and add tensile stress by clamping element, ladder compression chord correspondingly in this case.Now, when ladder is subjected to load, because the flexural stress of ladder makes the compressive stress of ladder reduce corresponding to the weight that stands on the ladder.

The Circular staircase of this structure can be built indoor and outdoors in, and external diameter can reach 400cm.Building in especially significant when outdoor at stair is that hardware is made with the high-quality steel, and ladder is selected the material of anti-atmospheric corrosion, for example granite for use.

Concrete regulation, clamping element are designed to have the lining of outwardly directed annular lip, and this lining can be connected with shaft-like girth member, and collar flange is pressed against on the ladder front end face.Lining is shaped on the internal thread of perforation, and girth member is shaped on the external screw thread that matches with the lining internal thread.

Therefore, by simply lining being rotated, just can on ladder, apply pretightning force on the screw thread of shaft-like girth member.

Answer lay special stress on to point out, when girth member is installed in the top 1/3rd of stepped cross-section, can reach the purpose of the load that increase can be born by ladder.Therefore, the external diameter that has of this Circular staircase can reach 400cm.

By another characteristics specify of the present invention, the bolt of in lining, can packing into, be used to install the pillar of balustrade from the outside.Because lining has the internal thread of perforation, be shaped on corresponding externally threaded bolt so in this internal thread, can screw in one, the pillar of balustrade is installed on the bolt.The benefit of here bringing is, so improved the utilization rate of ladder width direction, and thereby ladder can design narrowlyer.By prior art way so far be, on the Circular staircase that processes, be fixed on the pillar of handrail in the ladder above, so lost a part of width of ladder.

For the ease of the assembling of Circular staircase, the circumference that is defined in center pillar is provided with the especially junction plate of steel, and the girth member junction plate of steel therewith connects, and for example adopts welding.Junction plate itself is connected with center pillar by the screw linkage.Because for each ladder is joined a plate,,, again a piece junction plate and the ladder that is fixed on above them are contained on the center pillar together now as long as after having set up center pillar so assemble fairly simplely.

The installation of center pillar also can take measures to be simplified, that is, center pillar is made of member one by one, and these members connector mutually connect.

Describe the present invention as an example in detail by means of accompanying drawing below.

Fig. 1 represents the elevation of Circular staircase part;

Fig. 2 represents the section by Fig. 1 center line II/II;

Fig. 3 represents details " X " enlarged detail.

Press Fig. 1, it totally is made up of center pillar 2 and the ladder 3 that is contained in one by one on the center pillar 2 with 1 Circular staircase of representing.Center pillar 2 is combined by central cylinder member 2a, and wherein, each central cylinder member 2a has a tenon 2b at the one end, and it can be contained in another central cylinder member by a hole 2c who is designed to match with it.In other words, one by one central cylinder member 2a mutually connector couple together.Until the center pillar external diameter is 300cm, and this center pillar can be designed as all-in-one-piece.

Fig. 2 and 3 has represented the structure of ladder 3 and the fixed form on center pillar.

Ladder 3 has two to pass the shaft-like girth member 4 of steel of ladder along level, and they are in the end and junction plate 5 welding of center pillar one side.Be used to install the hole 3a of shaft-like girth member 4, its diameter is elected the diameter greater than shaft-like girth member 4 as, so formed cavity 3b between girth member 4 and hole 3a, its available mortar 6 filling.In order to make ladder 3 compression chords, will be spun on the shaft-like girth member 4 with 7 linings of representing now.For this reason, lining 7 is shaped on internal thread 7a, and shaft-like girth member 4 is shaped on the external screw thread 4a that matches with it.In addition, lining 7 also has an outwardly directed annular lip 7b, and it rests on the front end 3c of ladder 3 after lining 7 is screwed on the shaft-like girth member 4.Depend on that lining 7 is screwed in applied force on the shaft-like girth member 4, increases or reduce to act on the compressive stress on the ladder 3.That is to say that the tensile stress of the compressive stress of ladder and shaft-like girth member 4 has direct relation.

For junction plate 5 is fixed on the central cylinder member 2a of center pillar 2, be shaped on corresponding elongated hole 2d on the central cylinder member, bolt 8 passes this elongated hole, and bolt 8 is connected with junction plate 5 again.The advantage that elongated hole is set in central cylinder member 2a is, ladder become with respect to the location with the spacing of each adjacent ladder be more prone to.In slotted hole that bolt is packed into, be provided with long monkey wrench, by means of it bolt is passed center pillar inside and deliver to elongated hole place and fixing always.

For fixing balustrade, in lining 7 internal thread 7a, can be screwed into a bolt 9, be used to install the pillar 10 of balustrade.For bolt 9 is fixed among the internal thread 7a of lining 7, be provided with nut 11, it can be pressed on the annular lip 7b of lining 7.

Claims

1. Circular staircase, the made of stones especially natural ladder made of stones that is contained in one by one on the center pillar is arranged, ladder has girth member, it is characterized by: girth member (4) can be connected with center pillar (2) at the one end, can add pretightning force at its other end with respect to ladder (3) with clamping element (7).

2. according to the described Circular staircase of claim 1, it is characterized by: girth member (4) is designed to shaft-like, and passes ladder along the length of ladder (3).

3. according to the described Circular staircase of claim 2, it is characterized by: clamping element (7) is designed to have the lining of outwardly directed annular lip (7b), this lining (7) can be connected with shaft-like girth member (4), and annular lip (7b) is pressed against on the front end (3c) of ladder (3).

4. according to claim 1 or 2 described Circular staircases, it is characterized by: girth member (4) is contained in the top 1/3rd of ladder (3) cross section.

5. according to the described Circular staircase of claim 3, it is characterized by: lining (7) is shaped on internal thread (7a).

6. according to the described Circular staircase of claim 5, it is characterized by: shaft-like girth member (4) is shaped on the external screw thread (4a) that matches with lining (7) internal thread (7a).

7. according to the described Circular staircase of claim 5, it is characterized by: the bolt (9) of can packing into from the outside in lining is used to install the pillar (10) of balustrade.

8. according to the described Circular staircase of claim 1, it is characterized by: center pillar (2) has junction plate (5), and girth member (4) junction plate (5) therewith connects.

9. according to the described Circular staircase of claim 8, it is characterized by: for each ladder (3) sets a junction plate (5).

10. according to the described Circular staircase of claim 1, it is characterized by: center pillar (2) is made up of member (2a) one by one, their mutually connector connect.