CN210887832U - Assembled stair installing support - Google Patents

Abstract

The utility model provides an assembly type stair mounting bracket, which comprises an underframe, a top frame and a connecting frame, wherein the underframe is positioned below the top frame, and the connecting frame is positioned between the underframe and the top frame and is respectively detachably connected with the underframe and the top frame; a barrier device is arranged on one side of the top frame, which is far away from the top frame, and the barrier device is used for positioning the stairs and preventing the stairs from sliding; and one side of the top frame, which is close to the bottom frame, is provided with a jacking device, and the jacking device is used for jacking the top frame or the mounting bracket to move. The utility model provides an assembled stair installing support especially is fit for setting up the installation on cascaded step, simple structure, and the installation is dismantled conveniently, and the roughness is good and the steadiness is strong, can realize the fine setting of installing support simultaneously.

Description

Assembled stair installing support

Technical Field

The utility model belongs to the technical field of civil construction assembled floor structure, especially, relate to an assembled stair installing support.

Background

In the existing civil buildings, especially residential buildings, with the requirements of national environmental protection and energy conservation, the assembly type buildings become a great trend for the development of the building field. In the prefabricated building, the prefabricated staircase component is indispensable, and the used prefabricated floor bottom of current civilian building assembled is a flat inclined plane, and its upper portion is the cascaded step face of integrative connection. In a high-rise civil building, the overall stability and the anti-seismic performance of the structure are considered, the steel bars on one side, close to a wall body, of the stair need to be anchored into a wall body steel bar frame structure, therefore, the prefabricated stair with the steel bars on the side face needs to be installed and fixed well in advance before the concrete of the layer is poured, so that the steel bars on the side face of the prefabricated stair can be buried into the wall body steel bar frame structure, then the concrete is poured and solidified, and finally the prefabricated stair and the wall body are integrated.

Chinese patent publication number is CN 206917125U's an assembled stair, including chassis, platform and step, the last fixed surface of chassis is provided with first sleeve, first support column is installed through setting up the recess in first telescopic inside, the connector is installed to the upper end of first support column, the second support column has been cup jointed to the upper end of connector, the lower fixed surface of platform installs the second sleeve, the second sleeve cup joints the upper end at the second support column, spacing sleeve is installed on the upper portion of the second support column that the opposite side lower surface of platform cup jointed, spacing sleeve passes through the bolt fastening on the second support column, a side both corners department of step all is provided with circular through-hole, the step passes through circular through-hole and installs on the second support column.

However, the support in the above patent is only suitable for mounting stairs on flat ground, and the lower end face of the stairs is required to be a ladder structure with a vertical end face, while the upper end face of the assembled stair of the existing civil building is a continuous step structure, and the lower end face is an inclined plane structure, so the support in the patent is obviously not suitable for the assembled stair used by the existing civil building, and can not be suitable for supporting and mounting between the stairs; moreover, the steps are fixed in a separated mode, the center of gravity of the installation is installed on the second supporting column through the circular through hole, and the installation stability of the stair with large self weight cannot be guaranteed; thirdly, the whole body can not move upwards, and the whole body needs to be disassembled and then reassembled, so that the working efficiency is low, and the construction is inconvenient; in addition, the mode of fixing the connecting piece is adjusted to the unilateral face can not guarantee the holistic roughness of installation stair, poor stability.

Disclosure of Invention

The utility model discloses to the problem that exists among the above-mentioned prior art, the purpose provides an assembled stair installing support, is particularly suitable for setting up the stair installing support on cascaded step, can't guarantee the roughness and the steadiness of floor installing support among the solution prior art, and the inconvenient problem is dismantled in the installation.

The above technical purpose of the utility model is realized through following technical scheme:

an assembly type stair mounting bracket comprises an underframe, a top frame and a connecting frame, wherein the underframe is positioned below the top frame, and the connecting frame is positioned between the underframe and the top frame and is detachably connected with the underframe and the top frame respectively; a barrier device is arranged on one side of the top frame, which is far away from the top frame, and the barrier device is used for positioning the stairs and preventing the stairs from sliding; and one side of the top frame, which is close to the bottom frame, is provided with a jacking device, and the jacking device is used for jacking the top frame or the mounting bracket to move.

Furthermore, the blocking device comprises a plurality of blocking blocks, and the blocking blocks are arranged on the upper end face of the top frame.

Furthermore, the separating stop block is an arc-shaped boss, and a groove is formed in one side of the separating stop block.

Furthermore, the jacking device is arranged on the lower end face of the top frame and is arranged in an extending mode, and the height of the jacking device is larger than that of the top frame and smaller than the sum of the heights of the top frame and the connecting frame.

Furthermore, the roof rack includes and to first roof rack and the second roof rack of setting, first roof rack with at least one third roof rack is equipped with between the second roof rack, the third roof rack respectively with first roof rack with the connection can be dismantled to the second roof rack.

Furthermore, the underframe comprises a first underframe and a second underframe which are arranged in parallel, and at least one third underframe is arranged between the first underframe and the second underframe.

Further, the first chassis, the second chassis and the third chassis are respectively arranged corresponding to the first top frame, the second top frame and the third top frame.

Further, the number of the third bottom frames is the same as that of the third top frames.

Further, first through holes are formed in the top frame and the bottom frame, and the distance between the first through holes is a first hole pitch; the connecting frame is provided with second through holes, and the distance between the second through holes is a second pitch; the first pitch is different from the second pitch.

This technical scheme has following advantage and beneficial effect:

1. the utility model provides an assembled stair installing support, with current civil construction assembled floor looks adaptation, especially be fit for setting up and install on cascaded step. The chassis and the roof-rack of integral type design change in the installation of stair between the floor, have enough to meet the need and remove, and the installation rate is fast, and work efficiency is high, can shorten the set-up time of stair installing support, practices thrift construction cost.

2. The arrangement of the blocking device is not only favorable for the accurate positioning of the installation of the second stair, but also can prevent the second stair from sliding on the top frame, ensure the stability of the installation of the second stair and improve the safety factor of the installation of the second stair.

3. Jacking device be provided with easily the integrative removal of roof-rack or the integrative removal of roof-rack and chassis, need not to make roof-rack and link, link and chassis part totally can adjust the whole height and the horizontal position of installing support, work efficiency is high and the operation is controllable, and the integral type removes the roughness that changes in the installation of second stair, guarantees construction quality.

4. Through set up the through-hole connection structure of different pitch-row on link and roof-rack, chassis, can realize the fine setting to the installing support to adapt to the required precision of different height standards, the universality is strong and easily operation, also can increase the size range of installing support altitude mixture control simultaneously.

Drawings

Fig. 1 is a perspective view of an assembled stair mounting bracket of an embodiment of the present invention engaged with a first stair and a second stair;

fig. 2 is a front view of a prefabricated staircase mounting bracket according to an embodiment of the present invention engaged with a first staircase and a second staircase;

fig. 3 is a perspective view of an assembled stair mounting bracket according to an embodiment of the present invention;

fig. 4 is a plan view of the blocking device of an embodiment of the present invention engaged with a second stair;

FIG. 5 is a schematic cross-sectional view A-A of an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a section B-B according to an embodiment of the present invention;

fig. 7 is a perspective view of a jacking device according to an embodiment of the present invention;

fig. 8 is a schematic structural view of an insert rod according to an embodiment of the present invention;

fig. 9 is a schematic structural view of an insert rod according to another embodiment of the present invention;

fig. 10 is a schematic diagram illustrating the adjustment of the top frame and the connecting pipe according to an embodiment of the present invention;

fig. 11 is a first schematic view illustrating a state of the top frame and the connecting pipe being adjusted in cooperation according to an embodiment of the present invention;

fig. 12 is a schematic view illustrating a matching adjustment state of the top frame and the connecting pipe according to an embodiment of the present invention;

fig. 13 is a third schematic view illustrating a state of adjustment of the top frame and the connecting pipe according to an embodiment of the present invention.

In the figure:

1. base frame 101, first base frame 102 and second base frame

103. Third chassis 104, through hole 2 and connecting frame

201. Connection pipe 202, insertion rod 202a, insertion rod

202b, an insert rod 203, a through hole 3 and a top frame

301. First top frame 301a, square steel pipe 301b, square steel pipe

302. Second top frame 303, third top frame 303a, square steel pipe

303b, a square steel pipe 303c, a square steel pipe 304, a connecting pipe

305. Through hole 4, separate fender device 401, separate the dog

401a, groove 5, jacking device 501 and square steel pipe

502. Through hole 6, first stair 7, second stair

701. Anchor bolt groove 702 and anchor bolt

Detailed Description

The invention will be further explained with reference to the following examples and drawings:

the utility model provides an assembled stair installing support, as shown in fig. 1, the installing support sets up between first stair 6 and the second stair 7 that the syntropy interval set up, the installing support is including setting up chassis 1 at first stair 6 up end, setting up roof-rack 3 at second stair 7 lower extreme face to and set up link 2 between chassis 1 and roof-rack 3, chassis 1 is located the below of roof-rack 3, and the both ends of link 2 can be dismantled with chassis 1 and roof-rack 3 respectively and be connected. One side that is close to second stair 1 at roof-rack 3 is provided with and separates fender device 4, separates that fender device 4 is fixed to be set up on roof-rack 3 and perpendicular to roof-rack 3's up end upwards sets up, separates the crab-bolt groove 701 cooperation of fender device 4 and second stair 7 lower extreme face for make second stair 7 location and prevent second stair 7 to slide about or around on roof-rack 3 up end. One side of the top frame 3 close to the first stair 1 is provided with a jacking device 5, the jacking device 5 is fixedly arranged on the top frame 3, and the jacking device 5 is used for jacking the top frame 3 to move up and down, left and right or the mounting bracket moves up and down, left and right integrally.

As can be seen from fig. 2, the lower extreme of chassis 1 is fixed on the ladder plane of first stair 6, the up end of roof-rack 3 contacts with the lower terminal surface of second stair 7, roof-rack 3 is connected as an organic whole, the both ends of link 2 are embedded respectively in the upper end department of chassis 1 and the lower extreme department of roof-rack 2, jacking device 5 is on a parallel with the lower extreme support of roof-rack 3 and fixes on roof-rack 3, through adjusting the hookup location of link 2 and chassis 1 or roof-rack 2, can adjust the height of installing support, dismouting simple structure, the uniformity is good, and work efficiency is high. The mounting bracket of the structure is adaptive to mounting and fixing of the assembled stair of the stepped civil building, the top frame 3, the connecting frame 2 and the bottom frame 1 are connected in parallel and integrated vertically and are perpendicular to the step plane of the first stair 6, the second stair 7 is uniformly dispersed in the pressure of the mounting bracket, one part of the mounting gravity center of the second stair 7 is perpendicular to the inclined upper end plane of the top frame 2 and is offset with the vertical supporting force of the inclined upper end surface of the top frame 2, the other part of the mounting gravity center of the second stair is vertically downward and is uniformly dispersed on the vertical brackets of the bottom frame 1 and the top frame 2 through the connecting frame 2, the mounting bracket is stably connected integrally, and the verticality and the flatness of the mounting of the second stair 7 can be guaranteed. Simultaneously, separate keep off device 4 embedded in the crab-bolt groove 701 of terminal surface under second stair 7, not only can fix a position second stair 7's position, can prevent second stair 7 to slide on roof-rack 2 moreover, even to the great stair of dead weight, the steadiness of second stair 7 installation also can be guaranteed to this installing support. In the process of building, only the fixed supporting device 5 is needed, the connection position of the connecting frame 2 and the bottom frame 1 or the top frame 2 is adjusted, the integral movement and adjustment of the top frame 3 can be completed, construction is convenient, the production requirement of assembly type stair installation can be met, installation quality is controllable, and production cost is low.

As shown in fig. 3, the chassis 1 includes a first chassis 101 and a second chassis 103 which are spaced apart from each other, and at least one third chassis 103 is disposed between the first chassis 101 and the second chassis 103. The top frame 3 comprises a first top frame 301 and a second top frame 302 which are arranged at intervals, at least one third top frame 303 is arranged between the first top frame 301 and the second top frame 302, and the third top frame 303 is respectively connected with the first top frame 301 and the second top frame 302 through a connecting rod 304. In this embodiment, the number of the third bottom frames 103 is the same as that of the third top frames 103, and is one.

Further, in this embodiment, the height between first stair 6 and the second stair 7 is 3000mm, and first stair 6 is 1250mm with second stair 7 width, and its horizontal projection length is 5000mm, and wherein, chassis 1 and roof-rack 3 constitute by 80mm × 80 mm's square steel pipe, and square steel pipe wall thickness is 4mm, adopts 80mm × 80mm square steel pipe structural strength height and easily purchase, convenient to use.

Specifically, first chassis 101 includes that four are the vertical square steel pipe of 1000mm and the square steel pipe connecting piece of integrative welded "worker" style of calligraphy structure, the width of first chassis 101 is 1000mm, horizontal projection length is 1500mm, four endpoints and four vertical square steel pipe welded fastening of this "worker" style of calligraphy connecting piece together constitute one with the parallel slope first chassis 101 that sets up of first stair 6 up end, two vertical square steel pipes of first chassis 101 are on the same step plane in below side by side, two vertical square steel pipes in addition are on the same step plane in above side by side. The height of the I-shaped connecting piece is not less than 500mm and not more than 700mm, the height exceeds 700mm or is less than 500mm, the overall stability of welding of the first chassis 101 cannot be guaranteed, and preferably, the height is 600 mm. All be equipped with four through-holes 104 of vertical arrangement on the counterpoint side of four vertical square steel pipes's the top in first chassis 101, the shape of through-hole 104 can be square, rhombus, circular or polygon, and for processing convenience, this embodiment selects through-hole 104 to be round hole, and its aperture is 20mm, and the hole interval of adjacent through-hole 104 is 50 mm. The second chassis 102 has the same structure as the first chassis 101, and has the same height, width and horizontal projection length as the first chassis 101, and will not be described in detail herein. The third chassis 103 comprises a square steel pipe frame with cross-shaped structures on two sides, the square steel pipe frame is formed by fixedly welding one square steel pipe in the middle, the height of the third chassis 103 is 1000mm, the width of the third chassis 103 is 1000mm, the horizontal projection length of the third chassis 103 is 1000mm, four through holes 104 are formed in the upper end of the vertical square steel pipe of the third chassis 103, and the position and the structure of the through holes are the same as those of the first chassis 101 and the second chassis 102.

Specifically, the first upper frame 301 has an overall height of 1000mm, a width of 1000mm, and a horizontal projection length of 1500 mm. The first top frame 301 includes four vertical square steel pipes of the same length and an integrally welded "i" shaped structure square steel pipe connecting piece, the "i" shaped connecting piece is inclined upward and arranged in parallel with the lower end face of the second stair 7, and the upper end face of the "i" shaped connecting piece needs to keep a flat plane to be in contact with the lower end face of the second stair 7. One ends of four vertical square steel pipes are welded on the lower end face of the I-shaped connecting piece, the other ends of the four vertical square steel pipes are provided with four vertically arranged through holes 305, and the horizontal contraposition side face at one end of the highest point of the square steel pipes on two sides of the I-shaped connecting piece is provided with four horizontally arranged through holes 305. The position of the middle square steel pipe 301a of the I-shaped connecting piece corresponds to the radial horizontal position of the anchor bolt groove 701 in the second stair 7 right above the middle square steel pipe 301a, the baffle device 4 is vertically arranged on the upper end face of the square steel pipe 301a, the two baffle blocks 401 are provided, the baffle blocks 401 can be embedded in the anchor bolt groove, the second stair 7 is positioned, the second stair 7 can be prevented from sliding, and the specific matching structure is shown in fig. 4.

The second top frame 302 has the same structure as the first top frame 301, and has the same height, width and horizontal projection length as the first top frame 301, and will not be described in detail herein. The only difference is that four through holes 305 are arranged horizontally on the horizontal contraposition side surface at one end of the lowest point of the square steel pipes on two sides of the I-shaped connecting piece in the second top frame 302. The position of the middle square steel pipe 302a of the I-shaped connecting piece in the second top frame 302 corresponds to the radial horizontal position of the anchor bolt groove 701 in the second stair 7 right above the middle square steel pipe 302a, and the upper end face of the square steel pipe 302a is also vertically provided with a blocking device 4 which is two blocking blocks 401, wherein the blocking blocks 401 can be embedded in the anchor bolt grooves, and the specific matching structure is shown in fig. 4.

The third top frame 303 includes a square steel pipe frame having T-shaped structures at both sides, and a square steel pipe is welded in the middle of the square steel pipe frame, so that the T-shaped structures at both sides are connected together to form the third top frame 303. The height of third roof frame 303 is 1000mm, and the width is 1000mm, and horizontal projection length is 1000mm, is equipped with four horizontal arrangement's through-hole 305 on the horizontal counterpoint side of the both ends department of the square steel pipe that third roof frame 303 level set up side by side, and the one end that second stair 7 was kept away from to the square steel pipe of its vertical setting is equipped with four vertical arrangement's through-hole 305.

The connecting pipe 304 is also a square steel pipe, the wall thickness of the connecting pipe 304 is 4mm, the end face size is 70mm × 70mm, four through holes 305 which are horizontally arranged are formed in the alignment side faces at the two ends of the connecting pipe 304, the length of the connecting pipe 304 can be determined according to actual conditions, and no specific limitation is made here.

Further, the aperture of all the through holes 305 in the top frame 3 is 20mm, and the hole pitch is 50 mm.

The first underframe 101, the third underframe 103 and the second underframe 102 are mutually independently arranged on the upper end surface of the first stair 6 and are fixedly connected with the first top frame 301, the third top frame 303 and the second top frame 302 through the connecting frames 2 respectively to form a whole mounting bracket together. The chassis 1 and the roof-rack 3 of integral type design change in the installation, turnover and the removal of assembled stair between the floor, and the installation rate is fast, and work efficiency is high, can shorten stair set up time, practices thrift construction cost. Simultaneously, to the stair of different horizontal projection length, only need adjust the quantity of the third roof-rack 303 and the third chassis 103 that the centre set up, can adjust the horizontal projection length of whole chassis 1 and roof-rack 3, change in the regulation and assemble safety, the installing support integral connection stability is good, the roughness is high. For the top frame 3, the bottom frame 1 and the connecting frame 2, the repeated utilization rate is high, the disassembly, the assembly and the maintenance are convenient, the cost is low, and the service life is long.

Fig. 4 is a plan view of the blocking device 4 and the second stair 7, and it can be known that the blocking device 4 is fixedly disposed on the upper end surface of the top frame 3, and the blocking device 4 includes four blocking blocks 401, which are respectively welded on the upper end surfaces of the square steel tube 301a and the square steel tube 302a, and are positioned opposite to the anchor bolt 702 at the bottom of the second stair 7 for fixing the anchor bolt at the bottom of the second stair 7. Referring to fig. 4, cross-sectional structures of a-A, B-B are respectively shown in fig. 5 and 6, it can be seen that the blocking piece 401 is a circular arc-shaped boss, a groove 401a with an outward opening is formed on one side of the blocking piece, the opening of the groove 401a is arranged towards the highest position of the second stair 7, that is, the groove 401a is arranged towards one side of the anchor bolt 702 at the bottom of the second stair 7, so that the groove 401a surrounds the anchor bolt 702 to fix the anchor bolt 702 and prevent the anchor bolt 702 from sliding downwards or leftwards and rightwards; simultaneously, separate dog 401 and embed in anchor bolt groove 701 completely, also can further guarantee the fixed stability of second stair 7, and four and to the dog 401 that separates that sets up for the installation location of second stair 7 is more accurate. Specifically, the bottom of the second stair 7 is provided with an anchor bolt groove 701, an anchor bolt 702 protrudes from the bottom of the anchor bolt groove 701, the anchor bolt 702 is a steel bar with an inverted T-shaped structure, and the maximum diameter of the bottom is 20 mm; the spacing block 401 is a groove-shaped steel plate with the thickness of 30mm, the diameter of an arc is 50mm, and the width of the groove 401a is larger than the maximum diameter of the anchor bolt 702 by 20 mm.

As shown in fig. 7, a jacking device 5 is arranged on the lower end face of a third top frame 303 in a top frame 3, namely, the jacking device is arranged on the lower end face of a square steel pipe 303a and extends outwards, the jacking device 5 is a vertically arranged rectangular structural frame, two vertical square steel pipes 501 and a horizontal square steel pipe 501 are welded together to form a surrounding, the type of the square steel pipe 501 is that the cross section is 80mm × 80mm, the wall thickness is 4mm, the vertical square steel pipe 501 and the square steel pipe 303c are arranged side by side and vertically downwards, four vertically arranged through holes 502 are also arranged on the vertical square steel pipe 501, the height and the structure of the through holes 305 on the square steel pipe 303c are the same, in the fixing process of an installation frame, an inserting rod 202 sequentially penetrates through the through holes 305 on the square steel frame 303c, the through holes 203 on a connecting pipe 201, namely the through holes 502 on the square steel pipe 501, namely, the through holes 502 on the square steel pipe 501, the third top frame 303, the connecting frame 2 and the jacking device 5 are integrally connected and fixed together in a manner, the integrated manner, the jacking device 303, the jacking frame 303, the jacking device is more easily connected with the lifting device 2, the lifting device can be more easily and the lifting device 2, the lifting device can be more easily, the lifting device is more easily, the lifting device 2, the lifting device is more easily, the lifting device 2, the lifting device is more easily, the lifting device 2, the lifting device is more easily, the lifting device 2, the lifting device is more easily, the lifting device 2, the lifting device is more easily, the lifting device is more easily, the lifting device is more easily, the lifting device is more easily, the lifting device.

Further, the connection frame 2 includes a plurality of connection pipes 201 and insertion rods 202 having the same length, the insertion rods 202 are used for fixedly connecting the connection frame 2 with the top frame 3, the connection frame 2 with the bottom frame 1, and the top frame 3, wherein the connection pipes 201 are square steel pipes having a diameter of 70mm × 70mm, the wall thickness is 4mm, four through holes 203 are vertically arranged on the alignment side surfaces of the two ends of the connection pipe 201, the aperture of the through holes 203 is 20mm, the hole pitch is 37.5mm, the insertion rods 202 are steel bars having a diameter of 18mm, the length of the insertion rods is 1000mm greater than the width of the first bottom frame 101 and is 1250mm smaller than the width of the first stair 6, preferably, the insertion rods 202 have a length of 1100mm, the insertion rods 202 are structured in such a manner that one steel rod 202a is hinged to the insertion rod 202b, as shown in fig. 8, the insertion hole connection is easy to install, the insertion rod 202 has another structure in which a long steel rod 202a is arranged in the middle, two ends are respectively provided with a short insertion rod 202a, and the insertion rod 202a is hinged to the insertion rod 202b, as shown in fig. 9, the length of the insertion rod 202a length of the connection rod 1 is not less than the length of the top frame 1, and the extension rod 202b can be connected to the extension rod 202, and the extension rod 202b can.

During installation, one end of the connecting pipe 201 may be embedded in the upper ends of the first chassis 101, the second chassis 102, and the third chassis 103, and the other end of the connecting pipe may be embedded in the lower ends of the corresponding first top frame 301, the second top frame 302, and the third top frame 303, and fixed by the inserting rod 202, so that the first chassis 101, the second chassis 102, and the third chassis 103 are fixed with the first top frame 301, the second top frame 302, and the third top frame 303 through the connecting pipe 201, respectively; the first upper frame 301 and the third upper frame 303 are fixed together by the square pipe 304 through the insertion rod 202, and the third upper frame 303 and the second upper frame 302 are fixed together to form a mounting bracket. Or, the first top frame 301 and the third top frame 303, and the third top frame 303 and the second top frame 302 are fixed together by the square tube 304 through the inserted link 202, respectively, to assemble the integrated top frame 3; then, the top frame 3 is hoisted to the upper side of the first stair 6 by using a tower crane, and the top frame 3 is connected with the bottom frame 1 by using a connecting pipe 201 to form a mounting bracket. No matter which kind of erection joint mode, all can obtain the installing support that the roughness is good and the steadiness is strong, satisfy construction quality requirement.

In this embodiment, the hole distance h1 between the through holes 305 and 104 formed on the top frame 3 and the bottom frame 1 is different from the hole distance h2 between the through holes 203 formed on the connecting pipe 201, and is respectively 50mm and 37.5mm, so that the relative moving distance of the whole height of the mounting bracket can be adjusted by adjusting the relative positions of the through holes 305 and 104.

The range of the overall relative movement of the height of the upper end of the mounting bracket will be described by taking only different matching modes of the top frame 3 and the connecting through hole at one end of the connecting pipe 2 as examples. Specifically, as shown in fig. 10, the lower end of the square steel tube 301b in the first top frame 301 is provided with four through holes 305, which are a through hole 305a, a through hole 305b, a through hole 305c and a through hole 305d in sequence from top to bottom, and the hole distance h1 is 50 mm; the upper end of the connecting pipe 201 matched with the connecting pipe is provided with four through holes 203, namely a through hole 203a, a through hole 203b, a through hole 203c and a through hole 203d from top to bottom, and the hole distance h2 is 37.5 mm; the initial fitting positions of the square steel pipe 301b to the connection pipe 201 are the through hole 305a and the through hole 203a, and the plunger 202 penetrates the through hole 305a and the through hole 203 a.

As shown in fig. 11, when the overall height of the upper end of the mounting bracket is adjusted, only the square steel pipe 301b may be adjusted to move upward by a pitch h1, at this time, the connection hole of the square steel pipe 201 is still 203a, and the insertion rod 202 penetrates through the through hole 305b and the through hole 203a, so that the first top frame 301 moves upward by 50mm, that is, the distance of the overall relative movement of the mounting bracket is 50 mm. The square steel pipe 301b can also be adjusted to move upwards by two, three or four hole distances h1, at this time, the connecting hole of the square steel pipe 201 is still 203a, the matching schematic diagram of the inserted bar 202, the square steel pipe 301b and the connecting pipe 201 is omitted, and the overall relative movement distance of the mounting bracket is integral multiples of 50mm, namely 100mm, 150mm and 200 mm. In the present embodiment, the number of all the through holes is four, but other numbers are also possible and are within the protection scope of the present disclosure.

As shown in fig. 12, only the square steel pipe 201 may be adjusted to move downward by a hole distance h2, at this time, the connection hole of the square steel pipe 301b is still 305a, and the insertion rod 202 penetrates through the through hole 305a and the through hole 203b, so that the upward movement distance of the square steel pipe 201 is 37.5mm, that is, the relative movement distance of the whole mounting bracket is 37.5 mm. Similarly, the square steel tube 201 can also be adjusted to move upwards by two, three or four hole distances h1, at this time, the connecting hole of the square steel tube 301b is still 305a, and the matching schematic diagram is omitted, so that the overall relative movement distance of the mounting bracket is integral multiples of 37.5mm, namely 75mm, 112.5mm and 150 mm.

As shown in fig. 13, the square steel tube 301b and the square steel tube 201 may be synchronously moved in the same direction by one pitch, that is, the square steel tube 301b moves upward by 50mm, the square steel tube 201 moves upward by 37.5mm, and at this time, the insertion rod 202 penetrates through the through hole 305b and the through hole 203b, and the distance of the whole relative movement of the mounting bracket is the difference between h1 and h2, that is, 12.5 mm. In the same way, the integral relative movement distance of the mounting bracket is integral multiples of 12.5mm, and is respectively 25mm, 37.5mm and 50 mm.

In addition, when the overall height of the upper end of the mounting bracket is adjusted, the square steel pipe 301b and the square steel pipe 201 can be synchronously and reversely moved by a pitch distance, namely, the upward movement distance of the square steel pipe 301b is 50mm, the downward movement distance of the square steel pipe 201 is 37.5mm, and the overall relative movement distance of the mounting bracket is the sum of h1 and h2, namely 87.5mm, and the matching schematic diagram is omitted. In the same way, the integral relative movement distance of the mounting bracket is integral multiples of 87.5mm, which are 175mm, 262.5mm and 350mm respectively.

As can be seen from the above description, in the present embodiment, the minimum distance of the overall relative movement of the upper end of the mounting bracket is 12.5mm, the maximum distance can reach 350mm, and the values in the interval can be: 25mm, 37.5mm, 50mm, 75mm, 87.5mm, 100mm, 112.5mm, 150mm, 175mm, 262.5mm and 200 mm. Similarly, the thirteen sets of data can be obtained by adjusting the matching manner of the connecting through holes at one end of the chassis 1 and the connecting frame 2. Therefore, the through holes with different hole pitches are arranged on the connecting frame 2, the top frame 3 and the bottom frame 1 to be connected with a matched structure, fine adjustment of the mounting support can be achieved, the precision requirements of different height standards are met, the universality is high, the operation is easy, and meanwhile, the size range of height adjustment of the mounting support can be enlarged.

The mounting method of the assembly type stair by adopting the mounting bracket comprises the following steps:

s1, assembling the bottom frame 1 and the top frame 3 according to the horizontal projection length of the first stair 6.

Specifically, the horizontal projection length of the first staircase 6 is determined, the first chassis 101 and the second chassis 102 are selected, and the number of the third chassis 103 required for the first chassis 101 and the second chassis 102 is determined. And then selects the first top frame 301, the second top frame 302 and the third top frame 303 corresponding to the first chassis 101, the second chassis 102 and the third chassis 103, respectively.

S2, placing the undercarriage 1 at the upper end face of the first staircase 6.

Specifically, the first chassis 101, the third chassis 103, and the second chassis 102 are placed on the step top of the first stair 6 in order from low to high.

And S3, connecting one end of the connecting frame 2 with the underframe 1, connecting the other end of the connecting frame 2 with the top frame 3, and adjusting the height of the mounting bracket through the jacking device 5.

Specifically, one end of the connecting pipe 201 is embedded at the upper ends of the first chassis 101, the second chassis 102 and the third chassis 103, and then fixed by the inserting rod 202, so that the first chassis 101, the second chassis 102 and the third chassis 103 are connected with the connecting pipe 201; then the square pipe 304 is used for fixing the first top frame 301 and the third top frame 303 together through the inserted link 202, and fixing the third top frame 303 and the second top frame 302 together; then, the top frame 3 is hoisted to the upper side of the first stair 6 by using a tower crane, and the top frame 3 is connected with the bottom frame 1 by using a connecting pipe 201 to form a mounting bracket.

In the fixing process, a jack can be used for fixing the jacking device 5, the jacking device 5 integrally drags the top frame 3, and the height of the top frame 3 is adjusted or the horizontal displacement of the top frame 3 is moved; the whole mounting bracket can be integrally dragged to integrally move through the jacking device 5.

Further, in the installation, the minimum distance of whole relative movement of installing support upper end or lower extreme is 12.5mm, and the maximum distance can reach 350mm, can be respectively through the through-hole connection cooperation mode to the different pitch-row that set up on link 2 and roof-rack 3, link 2 and the chassis 1, can realize setting up the fine setting of installing support to adapt to the required precision of different height standards, the suitability is strong and easily operation.

And S4, placing the second stair 7 on the top frame 3, and ensuring the blocking device 4 to be matched with the second stair 7 in a positioning way.

The second stair 7 is placed on the upper end face of the top frame 3 through the tower crane, the position of the separation block 401 corresponds to that of the anchor bolt 702, the anchor bolt 702 is clamped and fixed in the groove 401a of the separation block 401, and the separation block 401 is embedded in the anchor bolt groove 701.

And S5, fixedly installing the second stair.

And anchoring the reinforcing steel bars of one side, close to the wall, of the second stair 7 into the wall reinforcing steel bar frame structure, so that the second stair 7 and the wall reinforcing steel bar frame are fixed together, then pouring concrete for solidification, and finally enabling the second stair 7 and the wall to be integrated.

According to the installation steps, the assembled stair installation bracket which is easy to adjust, safe to assemble, good in stability and high in flatness can be obtained; the mounting bracket is convenient to disassemble, assemble and maintain, and the mounting process is controllable; the repeated utilization rate of the top frame, the bottom frame and the connecting frame is high; the mounting bracket has low overall cost, long service life and high working efficiency, and can ensure the construction quality.

This technical scheme has following advantage and beneficial effect:

1. the utility model provides an assembled stair installing support, with current civil construction assembled floor looks adaptation, especially be fit for setting up and install on cascaded step. The chassis and the roof-rack of integral type design change in the installation of stair between the floor, have enough to meet the need and remove, and the installation rate is fast, and work efficiency is high, can shorten the set-up time of stair installing support, practices thrift construction cost.

2. The arrangement of the blocking device is not only favorable for the accurate positioning of the installation of the second stair, but also can prevent the second stair from sliding on the top frame, ensure the stability of the installation of the second stair and improve the safety factor of the installation of the second stair. Jacking device be provided with easily the integrative removal of roof-rack integrative removal or installing support, need not to make roof-rack and link, link and chassis part totally can adjust the whole height and the horizontal migration position of installing support, work efficiency is high and the operation is controllable, and the integral type removes the roughness that changes in the installation of second stair, guarantees construction quality.

3. Through set up the through-hole connection structure of different pitch-row on link and roof-rack, chassis, can realize the fine setting to the installing support to adapt to the required precision of different height standards, the universality is strong and easily operation, also can increase the size range of installing support altitude mixture control simultaneously.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims (9)

1. An assembly type stair mounting bracket is characterized by comprising an underframe, a top frame and a connecting frame, wherein the underframe is positioned below the top frame, and the connecting frame is positioned between the underframe and the top frame and is respectively detachably connected with the underframe and the top frame; a barrier device is arranged on one side of the top frame, which is far away from the top frame, and the barrier device is used for positioning the stairs and preventing the stairs from sliding; and one side of the top frame, which is close to the bottom frame, is provided with a jacking device, and the jacking device is used for jacking the top frame or the mounting bracket to move.

2. The mounting bracket of claim 1, wherein the blocking device comprises a plurality of blocking pieces, and the blocking pieces are arranged on the upper end surface of the top frame.

3. The mounting bracket of claim 2, wherein the blocking piece is a circular arc-shaped boss, and a groove is formed on one side of the blocking piece.

4. The mounting bracket of claim 1, wherein the jacking device is arranged on the lower end surface of the top frame and extends outwards, and the height of the jacking device is greater than that of the top frame and less than the sum of the heights of the top frame and the connecting frame.

5. The mounting bracket according to any one of claims 1 to 4, wherein the top frame comprises a first top frame and a second top frame which are arranged in parallel, at least one third top frame is arranged between the first top frame and the second top frame, and the third top frame is detachably connected with the first top frame and the second top frame respectively.

6. The mounting bracket of claim 5, wherein the chassis comprises a first chassis and a second chassis arranged side-by-side, and at least one third chassis is arranged between the first chassis and the second chassis.

7. The mounting bracket of claim 6, wherein the first, second, and third bottom frames are disposed corresponding to the first, second, and third top frames, respectively.

8. The mounting bracket of claim 7, wherein the third bottom chassis is equal in number to the third top chassis.

9. The mounting bracket of any one of claims 1-4 and 6-8, wherein first through holes are formed in the top frame and the bottom frame, and the first through hole pitch is a first pitch; the connecting frame is provided with second through holes, and the distance between the second through holes is a second pitch; the first pitch is different from the second pitch.

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