CN117303242A - Conversion type vertical jacking device and jacking method thereof - Google Patents

Abstract

The invention discloses a conversion type vertical jacking device and a jacking method thereof, wherein the conversion type vertical jacking device comprises: the reaction platform is provided with guide groove plates, and the guide groove plates are provided with pin holes which are arranged at intervals; one part of the carrying pole beam is connected with a first upright post of the steel structure to be jacked, and the other part of the carrying pole beam is used for connecting with a pin hole on the guide groove plate after the steel structure to be jacked is jacked to a preset position in a single jacking process; the lifting top iron is arranged at the bottom of the shoulder pole beam and is connected with the shoulder pole beam, and one part of the lifting top iron is connected with a first upright post of the rigid structure to be lifted; and the jack system is arranged on the counter-force platform and supports the lifting jack iron. The conversion type vertical jacking device disclosed by the invention saves the construction site to the greatest extent, does not need large-scale hoisting equipment, does not need a construction operation platform, a scaffold and the like. Meanwhile, the construction cost can be reduced to the greatest extent, and the operation is simple.

Description

Conversion type vertical jacking device and jacking method thereof

Technical Field

The invention relates to the technical field of building construction, in particular to a conversion type vertical jacking device and a jacking method thereof.

Background

The steel structure integral jacking method is widely used in large-span steel structure engineering such as net rack and net shell installation. Generally, a jacking expansion device is arranged at the jacking point of the truss structure, a jacking assembly unit is arranged below the jacking expansion device, the jacking expansion device is synchronous by adopting computer numerical control, after the truss structure is integrally jacked to a certain height, the assembly unit is additionally arranged between the installed assembly structure and the truss structure to increase the height, the jacking process is repeated, and the integral jacking of the steel structure truss is realized.

However, the integral jacking method requires adding new supporting units from the lower part of the truss structure every time, and as the jacking height of the truss structure is higher and higher, the construction height and the operation difficulty of the assembled units are higher and higher. The structure (such as truss) to be lifted is generally assembled on the ground in advance, and then the lifting structure is installed for lifting, so that the construction cannot be carried out in an integral lifting mode on a vertical steel structure (such as a shaft steel structure frame of an externally added elevator) with a higher height but a smaller span.

Of course, in the prior art, there are jacking construction methods using tower crane sections or using an assembled externally-added elevator shaft structure. However, the tower crane joint adding method needs to be provided with a sleeve frame externally and used for hoisting and assembling standard joints, and is not suitable for the conditions that no external construction space exists and the sleeve frame cannot be installed. The sleeve frame and the jacking table need to rise layer by layer along with the main frame body and are provided with the lifting device, so that the lifting device is not applicable to the condition without lifting field conditions (equipment of the top section cannot be removed). The jacking construction method of the assembled additional elevator shaft structure adopts a winch for lifting, has poor synchronism, is easy to generate uneven stress and deviation, and does not consider the safety margin under the limit of breaking of the steel wire rope. And need utilize elevator well foundation ditch installation motor, need attach the wall installation guide rail, the operation is comparatively loaded down with trivial details.

Disclosure of Invention

The invention aims to provide a novel technical scheme of a conversion type vertical jacking device and a jacking method thereof, which at least can solve the problems that in the prior art, because a field is limited and a hoisting condition is not provided, a main body is not provided for an external operation space of a structure to be jacked, the cost expenditure for erecting a scaffold and renting large-scale hoisting equipment is reduced, the construction progress is slow and the like.

In a first aspect of the present invention, there is provided a conversion type vertical jacking device, including: the reaction platform is provided with guide groove plates extending in the height direction, and part of the guide groove plates in the height direction is provided with pin holes which are arranged at intervals; the carrying pole beam is arranged below a cross beam of the steel structure to be lifted, one part of the carrying pole beam is connected with a first upright post of the steel structure to be lifted, and the other part of the carrying pole beam is used for connecting a pin hole on the guide groove plate after the steel structure to be lifted is lifted to a preset position in a single lifting process so as to realize conversion stress; the lifting top iron is arranged at the bottom of the shoulder pole beam and is connected with the shoulder pole beam, and one part of the lifting top iron is connected with the first upright post of the rigid structure to be lifted; and the jack system is arranged on the counter-force platform and supports the lifting jack iron so as to drive the lifting jack iron to lift in the height direction.

Optionally, the reaction platform includes: a bottom plate for being disposed on a concrete structure of an elevator hoistway to be installed; the second upright posts are vertically arranged on the bottom plate, and every two second upright posts form an upright post group; the lining plates are arranged at intervals along the height direction of the second upright posts, and each lining plate is connected with two second upright posts respectively.

Optionally, the reaction platform further comprises: the I-steel is arranged on the bottom plate, and the second upright post is arranged on the I-steel; the reinforcing beams are arranged in different directions, and each reinforcing beam is connected with two second upright posts respectively.

Optionally, the shoulder pole beam includes: the beam body is arranged at the bottom of the cross beam of the steel structure to be jacked; the conversion bracket is connected with one side of the beam body, a mounting hole is formed in the conversion bracket, and the conversion bracket can be connected with the pin hole in the guide groove plate through the mounting hole; the first anchor ear, first anchor ear with the opposite side swing joint of the roof beam body, form first centre gripping chamber in the first anchor ear, the space in first centre gripping chamber is adjustable, first anchor ear passes through first centre gripping chamber with wait to rise just first stand of structure and be connected.

Optionally, the number of conversion bracket is two, two conversion bracket is spaced apart to be set up, every conversion bracket respectively with the deflector.

Optionally, the first anchor ear with the roof beam body passes through bolt hinge swing joint, the tip that keeps away from of the roof beam body of first anchor ear is equipped with first connecting bolt after the first anchor ear centre gripping first stand is through first connecting bolt clamp fastening.

Optionally, a backing plate is arranged in the first anchor ear.

Optionally, the raising top iron includes: the two opposite end surfaces of the jacking column are respectively used for connecting the shoulder pole beam and the other jacking column in the process of joint adding; the second anchor ear, the second anchor ear with the jack-up post is connected, form the second centre gripping chamber in the second anchor ear, the second anchor ear passes through the second centre gripping chamber presss from both sides tightly the second stand.

Optionally, a second connecting bolt is arranged at one end, far away from the top column, of the second anchor ear, and after the second anchor ear clamps the first upright column, the second anchor ear is clamped and fixed through the second connecting bolt.

In a second aspect of the present invention, a jacking method is provided, which is applied to the conversion type vertical jacking device described in the foregoing embodiment, and the jacking method includes:

installing a counter-force platform and a jack system;

mounting a shoulder pole beam, and holding a first upright post of the rigid structure to be jacked by the shoulder pole beam;

the oil way of the jack system is connected and debugged;

jacking a first jacking stroke, and after the first jacking stroke is completed, connecting the jacking stroke with the counter-force platform through a conversion bracket of the shoulder pole beam through a bolt, and converting stress;

the jack system discharges oil and retracts, a lifting top iron is arranged, and the lifting top iron is used for holding the first upright post of the rigid structure to be lifted;

repeating the second to N jacking strokes, and installing a hoistway steel structure after jacking to a preset height;

and unloading the lifting top iron and the shoulder pole beam, and connecting and constructing the bottom of the steel structure to be lifted.

According to the conversion type vertical jacking device, the guide groove plates are arranged on the counter-force platform, the pin holes are arranged on the guide groove plates, the shoulder pole beam is arranged below the cross beam of the steel structure to be jacked, and the shoulder pole beam is connected with the first upright post of the steel structure to be jacked. After the jacking stroke is finished once through the jack system, the shoulder pole beam is fixed on the guide groove plate of the counter-force platform, so that the lifting iron is convenient to install, and then the next jacking stroke is continued after the shoulder pole beam is separated from the guide groove plate, so that the jacking requirement of the steel structure to be jacked is met. The jacking device disclosed by the invention saves the construction site to the greatest extent, and especially has the advantages that the construction site is limited to the condition that the steel structure is installed with the self structure to occupy the ground and no redundant operation space exists. And large-scale hoisting equipment is not needed, and a construction operation platform, a scaffold and the like are not needed. Meanwhile, the construction cost can be reduced to the greatest extent, the operation is simple, the vertical in-situ jacking construction can be realized only by repeating the jacking process and the steel structure body installation process in the first floor ground height, and the construction efficiency is high.

Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a construction structural view of a conversion type vertical lift-up apparatus according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a reaction force platform of a conversion type vertical jacking device according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a shoulder pole beam of a convertible vertical lift device according to an embodiment of the present invention;

FIG. 4 is a top view of a shoulder pole beam of a convertible vertical lift device in accordance with an embodiment of the present invention;

fig. 5 is a schematic view of the structure of a lifting jack iron of a conversion type vertical jacking device according to an embodiment of the present invention;

fig. 6 is a flowchart of a jacking method according to an embodiment of the present invention.

Reference numerals:

a reaction force platform 10; a guide groove plate 11; pin holes 111; a bottom plate 12; a second upright 13; a backing plate 14; i-steel 15; a reinforcing beam 16;

a shoulder pole beam 20; a beam body 21; conversion bracket 22; a mounting hole 221; a first anchor ear 23; a first clamping cavity 231;

raising the top iron 30; a top column 31; an end panel 311; a second anchor ear 32; a second clamping cavity 321;

a jack system 40; a spline 41;

the steel structure 50 is to be lifted; a first upright 51.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description and claims of the present invention, the terms "first," "second," and the like, if any, may include one or more of those features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In the description of the present invention, it should be understood that, if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are referred to, the positional relationship indicated based on the drawings is merely for convenience of description and simplification of the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the invention.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, unless otherwise specifically defined and limited. For example, the connection can be fixed connection, detachable connection or integrated connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

The following describes a conversion type vertical lift device according to an embodiment of the present invention in detail with reference to the accompanying drawings.

As shown in fig. 1 to 5, the conversion type vertical jacking device according to the embodiment of the present invention includes a reaction force platform 10, a shoulder pole beam 20, a lifting jack 30, and a jack system 40.

Specifically, the reaction force platform 10 is provided with guide groove plates 11 extending in the height direction, and a part of the guide groove plates 11 in the height direction is provided with pin holes 111 provided at intervals. The shoulder pole beam 20 is used for being arranged below a cross beam of the steel structure 50 to be lifted, one part of the shoulder pole beam 20 is connected with a first upright post 51 of the steel structure 50 to be lifted, and the other part of the shoulder pole beam 20 is used for being connected with a pin hole 111 on the guide groove plate 11 after the steel structure 50 to be lifted to a preset position in a single lifting process so as to realize conversion stress. The lifting top iron 30 is arranged at the bottom of the shoulder pole beam 20 and is connected with the shoulder pole beam 20, and a part of the lifting top iron 30 is connected with a first upright column 51 of the rigid structure to be lifted. The jack system 40 is provided on the reaction force platform 10, and the jack system 40 supports the lifting jack iron 30 to drive the lifting jack iron 30 to lift in the height direction.

In other words, referring to fig. 1 to 5, the conversion type vertical jacking device according to the embodiment of the present invention is mainly composed of a reaction force platform 10, a shoulder pole beam 20, a lifting top iron 30, and a jack system 40. Wherein the reaction platform 10 is mounted on the concrete structure of the elevator shaft to be mounted and may be fixed with anchor bolts. Referring to fig. 1 and 2, the reaction force platform 10 is provided with guide groove plates 11 extending in the height direction, and upper portions of the guide groove plates 11 in the height direction are provided with pin holes 111 provided at intervals. As shown in fig. 3 and 4, the shoulder pole beam 20 is configured to be disposed below a beam of the steel structure 50 to be lifted, and the shoulder pole beam 20 may be formed by using a digitally controlled blanking steel plate for tailor welding. A portion of the shoulder pole beam 20 is connected to a first upright 51 of the steel structure 50 to be lifted. The other part of the shoulder pole beam 20 is used for connecting the pin holes 111 on the guide groove plates 11 after the jacking steel structure 50 is jacked to a preset position in the single jacking process, so as to realize the conversion stress, share the jacking force and ensure the overall stability of the shoulder pole beam 20.

As shown in fig. 1 and 5, the lifting jack 30 may be installed at the bottom of the shoulder pole beam 20 after completing one lifting stroke, and the lifting jack 30 is connected to the shoulder pole beam 20, and a portion of the lifting jack 30 is connected to the first upright 51 of the structure to be lifted. The jack system 40 is mounted on the reaction platform 10, and the gold-fixing system comprises a jack and an oil pressure system. The jack system 40 supports the lifting jack iron 30, and drives the lifting jack iron 30 to lift in the height direction.

The jack system 40 can adopt 4 long-stroke jacks with the length of 500mm, and 3 connecting lug plates are arranged at the upper part of the side of the jack and are tightened and fixed with the counterforce platform 10 by using the spline bolts 41. The jack system 40 can be designed to be double oil ways, is connected to one pump station, and is controlled by a PLC synchronous system, so that the precision and the synchronous performance of each lifting are ensured.

Thus, according to the conversion type vertical jacking device of the embodiment of the present invention, the guide groove plate 11 is provided on the reaction force platform 10, and the pin hole 111 is provided on the guide groove plate 11, the shoulder pole beam 20 is installed under the cross beam of the steel structure 50 to be jacked, and the shoulder pole beam 20 is connected with the first upright post 51 of the steel structure 50 to be jacked. After the jacking travel is finished once through the jack system 40, the shoulder pole beam 20 is fixed on the guide groove plate 11 of the counter-force platform 10, the lifting iron 30 is convenient to install, then the next jacking travel is continued after the shoulder pole beam 20 is separated from the guide groove plate 11, and the jacking requirement of the steel structure 50 to be jacked is met in a reciprocating manner.

The conversion type vertical jacking device disclosed by the invention has the advantages that the construction site is saved to the greatest extent, and particularly, the construction site is limited to the condition that the construction site occupies only the floor of a steel structure installation self structure and has no redundant operation space. And large-scale hoisting equipment is not needed, and a construction operation platform, a scaffold and the like are not needed. Meanwhile, the construction cost can be reduced to the greatest extent, the operation is simple, the vertical in-situ jacking construction can be realized only by repeating the jacking process and the steel structure body installation process in the first floor ground height, and the construction efficiency is high.

According to one embodiment of the invention, the reaction force platform 10 includes a base plate 12, a plurality of second uprights 13, and a plurality of backing plates 14.

In particular, the floor 12 is intended to be placed on a concrete structure of the elevator hoistway to be installed. A plurality of second columns 13 are vertically arranged on the bottom plate 12, each two second columns 13 form a column group, the guide channel plate 11 is arranged on the second column 13, and a part of the shoulder pole beam 20 is connected with the pin hole 111 on the guide channel plate 11. The plurality of lining plates 14 are arranged at intervals along the height direction of the second upright posts 13, and each lining plate 14 is respectively connected with two second upright posts 13.

That is, referring to fig. 2, the reaction force platform 10 is mainly composed of a base plate 12, a plurality of second uprights 13, and a plurality of lining plates 14. Wherein the bedplate 12 is intended primarily for placement on the concrete structure of the elevator shaft to be installed. The bottom plate 12 may be composed of T rows and steel plates. A plurality of second columns 13 are vertically arranged on the base plate 12, each two second columns 13 forming a column group. The number of the second upright posts 13 can be eight, and the structural form of the eight second upright posts 13 can be I-steel. The guide groove plate 11 is mounted on the second upright 13, and a part of the shoulder pole beam 20 is connected to the pin hole 111 on the guide groove plate 11. The plurality of lining plates 14 can be arranged at intervals along the height direction of the second upright posts 13, and each lining plate 14 is respectively connected with two second upright posts 13, so that the stability of the overall structure of the counterforce platform 10 is improved.

The reaction force platform 10 further comprises i-steel 15 and a plurality of reinforcement beams 16 according to one embodiment of the invention.

Specifically, the i-beam 15 is disposed on the base plate 12, and the second upright 13 is disposed on the i-beam 15. The plurality of reinforcement beams 16 are arranged in different directions, each reinforcement beam 16 being connected to two second uprights 13, respectively.

That is, as shown in fig. 2, the reaction force platform 10 may further include an i-beam 15 and a plurality of reinforcement beams 16. Wherein, I-steel 15 installs on bottom plate 12, and second stand 13 installs on I-steel 15. The plurality of second uprights 13 are welded together in one piece by means of the lining 14 and the i-bars 15. The plurality of reinforcement beams 16 can be arranged along different directions, and each reinforcement beam 16 is respectively connected with two second upright posts 13, so that the stability of the overall structure of the reaction platform 10 is further improved.

According to one embodiment of the invention, the shoulder pole beam 20 includes a beam body 21, a transition bracket 22, and a first anchor 23.

Specifically, the beam body 21 is configured to be disposed at the bottom of a beam of the steel structure 50 to be lifted. The conversion bracket 22 is connected to one side of the beam body 21, the conversion bracket 22 is provided with a mounting hole 221, and the conversion bracket 22 can be connected to the pin hole 111 of the guide groove plate 11 through the mounting hole 221. The first anchor ear 23 is movably connected with the other side of the beam body 21, a first clamping cavity 231 is formed in the first anchor ear 23, the space of the first clamping cavity 231 is adjustable, and the first anchor ear 23 is connected with the first upright post 51 of the steel structure to be jacked through the first clamping cavity 231.

In other words, referring to fig. 3 and 4, the shoulder pole beam 20 is mainly composed of a beam body 21, a conversion bracket 22, and a first anchor ear 23. The beam body 21 is arranged at the bottom of the beam of the steel structure 50 to be lifted. The beam body 21 serves as a main beam of the shoulder pole beam 20. The conversion bracket 22 is connected to one side of the beam 21. The beam body 21 and the conversion bracket 22 are welded into a whole by adopting numerical control blanking steel plates for straight stressing below the cross beam of the steel structure 50 to be jacked. The conversion bracket 22 is provided with mounting holes 221, and the conversion bracket 22 can be connected to the pin holes 111 of the guide groove plate 11 through the mounting holes 221. The mounting holes 221 reserved on the conversion bracket 22 can be used for converting stress after single jacking in place.

The first anchor ear 23 is movably connected with the other side of the beam body 21, and the first anchor ear 23 can move at 90 degrees relative to the beam body 21 in the plane direction. A first clamping cavity 231 is formed in the first hoop 23, the space of the first clamping cavity 231 is adjustable, and the first hoop 23 is connected with the first upright post 51 of the rigid structure to be lifted through the first clamping cavity 231. The shoulder pole beam 20 is connected with the first upright post 51 of the structure to be lifted during lifting operation, and the first anchor ear 23 is tightened after being tightly held by the first upright post 51, so that the first anchor ear 23 is fixed with the first upright post 51, the lifting force is shared, and the overall stability of the shoulder pole beam 20 is ensured.

In some embodiments of the present invention, the number of the converting brackets 22 is two, and the two converting brackets 22 are spaced apart, and each converting bracket 22 is connected to the guide groove plate 11. The first anchor ear 23 is movably connected with the beam body 21 through a bolt hinge, a first connecting bolt is arranged at the end part, far away from the beam body 21, of the first anchor ear 23, and after the first anchor ear 23 clamps the first upright post 51, the first anchor ear is clamped and fixed through the first connecting bolt. A backing plate is arranged in the first hoop 23.

That is, referring to fig. 3 and 4, the number of the converting brackets 22 may be two, and the two converting brackets 22 may be disposed at a distance. Each of the conversion brackets 22 may be connected to the guide groove plate 11, respectively. The first anchor ear 23 can be movably connected with the beam body 21 through a bolt hinge, and a base plate is arranged in the first anchor ear 23 to prevent the first upright post 51 from being damaged. The tip that keeps away from the roof beam body 21 of first staple bolt 23 is provided with first connecting bolt, and after first stand 51 of first staple bolt 23 centre gripping, it is fixed to press from both sides tightly through first connecting bolt, guarantees the steadiness of structure.

According to one embodiment of the invention, the lifting ram 30 comprises a ram 31 and a second anchor ear 32.

Specifically, opposite end surfaces of the jack-post 31 are used to connect the shoulder pole beam 20 and the other jack-post 31 at the time of joint addition, respectively. The second anchor ear 32 is connected with the jack-up post 31, forms second centre gripping chamber 321 in the second anchor ear 32, and second anchor ear 32 presss from both sides tight second stand 13 through second centre gripping chamber 321. The end of the second anchor ear 32 far away from the top column 31 is provided with a second connecting bolt, and after the second anchor ear 32 clamps the first upright column 51, the second anchor ear is clamped and fixed through the second connecting bolt.

In other words, referring to fig. 5, the lifting top iron 30 is mainly composed of a top column 31 and a second anchor ear 32. The opposite end surfaces of the top column 31 are respectively used for connecting the shoulder pole beam 20 and the other top column 31 in the joint adding process. The top column 31 has a cross structure, the upper and lower end surfaces are respectively provided with an end plate 311, and the end plates 311 are respectively provided with four bolt holes which can be connected with the shoulder pole beam 20 through bolts. The upper and lower top posts 31 are bolted together during the joint addition. The second anchor ear 32 is connected with the jack-up post 31, forms second centre gripping chamber 321 in the second anchor ear 32, and second anchor ear 32 presss from both sides tight second stand 13 through second centre gripping chamber 321. The end of the second anchor ear 32 far away from the top column 31 is provided with a second connecting bolt, and after the second anchor ear 32 clamps the first upright column 51, the second anchor ear is clamped and fixed through the second connecting bolt. The second anchor ear 32 can be internally lined with a rubber backing plate, is connected with the top column 31 by adopting a hinge, and can move by 90 degrees. The end of the second anchor ear 32 is provided with a second connecting bolt, the bolt is tightened after the anchor post is held, the second anchor ear is fixed with the first upright post 51 of the steel structure 50 to be jacked during jacking operation, the jacking force is shared, and the overall stability of the jacking iron 30 is ensured.

In the invention, the counterforce platform 10 is horizontally arranged on the top surface of the foundation pit concrete of the elevator shaft and is fixed by adopting foundation bolts. The jack is fixed with the counter-force platform 10 by adopting 3 turnbuckle screws. The shoulder pole beam 20 is arranged right below the cross beam of the steel structure 50 to be jacked and is isolated by a skid or rubber, so that the steel structure is prevented from being damaged. The shoulder pole beam 20 is in sliding connection with the guide groove plate 11 on the counter-force platform 10, and after one jack stroke is jacked, the conversion bracket 22 and the guide groove plate 11 are fixed by bolts to carry out stress conversion. The shoulder pole beam 20 is fixedly connected with a first upright post 51 of a steel structure (to-be-lifted steel structure 50) of the well frame, and each lifting top iron 30 is fixedly connected with an upright post anchor of the steel structure of the well frame. The lifting jacking iron 30 and the shoulder pole beam 20 are fixedly connected by bolts, and after one jack stroke is jacked, the newly added lifting jacking iron 30 and the previous section of lifting jacking iron 30 are connected by bolts.

The jacking principle of the conversion type vertical jacking device is that the shoulder pole beam 20 is horizontally arranged below a cross beam of a steel structure 50 to be jacked, is used as a main jacking stress structure, is connected with a first upright post 51 through a hoop, and is jacked in a single section and ascends along with the cross beam. The jacks of the conversion type vertical jacking device are connected to the same pump station to synchronously control, and the pump station supplies oil to the jacks synchronously during jacking operation. The lifting top iron 30 is connected with the shoulder pole beam 20 or the upper section lifting top iron 30 through bolts and is connected with the first upright post 51 through hoops, and rises along with the lifting process. After each lifting stroke of the jack, the conversion bracket 22 is connected with the guide groove plate 11 of the counter-force platform 10 through a bolt, and the stress is converted. The jack oil discharge is retracted, and a new section of lifting top iron 30 is added between the jack and the previous section of lifting top iron 30. Repeating the steps until the steel structure is lifted to a single section with a preset height, carrying out on-site splicing and welding of a new section, and repeating the lifting construction of the next section after the on-site splicing and welding of the new section is completed.

In the present invention, the reaction force platform 10 is provided with the guide groove plate 11 and the pin hole 111, so that the force conversion can be realized. The shoulder pole beam 20 is provided with a first hoop 23 which is connected with a first upright column 51 of the steel structure 50 to be jacked, and can share part of the jacking force and ensure stability. The lifting top iron 30 can be heightened in sections, and the second anchor ear 32 is arranged to be connected with the first upright post 51 of the steel structure (the steel structure 50 to be lifted) of the well to enhance the stability. The single lifting stroke of the conversion type vertical lifting device is 500mm, the total lifting height is 2.5m-4m, and the vertical in-situ lifting of the steel structure with a larger height is realized.

In summary, according to the conversion type vertical jacking device of the embodiment of the present invention, the guide groove plate 11 is provided on the reaction force platform 10, and the pin hole 111 is provided on the guide groove plate 11, the shoulder pole beam 20 is installed under the cross beam of the steel structure 50 to be jacked, and the shoulder pole beam 20 is connected with the first upright post 51 of the steel structure 50 to be jacked. After the jacking travel is finished once through the jack system 40, the shoulder pole beam 20 is fixed on the guide groove plate 11 of the counter-force platform 10, the lifting iron 30 is convenient to install, then the next jacking travel is continued after the shoulder pole beam 20 is separated from the guide groove plate 11, and the jacking requirement of the steel structure 50 to be jacked is met in a reciprocating manner. The conversion type vertical jacking device disclosed by the invention has the advantages that the construction site is saved to the greatest extent, and particularly, the construction site is limited to the condition that the construction site occupies only the floor of a steel structure installation self structure and has no redundant operation space. And large-scale hoisting equipment is not needed, and a construction operation platform, a scaffold and the like are not needed. Meanwhile, the construction cost can be reduced to the greatest extent, the operation is simple, the vertical in-situ jacking construction can be realized only by repeating the jacking process and the steel structure body installation process in the first floor ground height, and the construction efficiency is high.

Of course, other structures of the conversion type vertical jacking device and the working principle thereof are understood and can be implemented by those skilled in the art, and detailed description thereof is omitted herein.

According to a second aspect of the present invention, there is provided a jacking method applied to the conversion type vertical jacking device in the above-described embodiment, in which, referring to fig. 6, first, the reaction force platform 10 and the jack system 40 are installed. Then, the shoulder pole beam 20 is installed, and the first upright post 51 of the rigid structure to be lifted is held by the shoulder pole beam 20. Next, the oil path of the jack system 40 is connected and adjusted.

Then, the first jacking stroke is jacked, and after the first jacking stroke is completed, the first jacking stroke is connected with the counter-force platform 10 through the bolt of the conversion bracket 22 of the shoulder pole beam 20, and the stress is converted. The jack system 40 is retracted by draining oil, and the lifting top iron 30 is installed, and the lifting top iron 30 is used for holding the first upright post 51 of the rigid structure to be lifted. The second to N jacking strokes may then be repeated according to the actual desired jacking height, N may be a natural number greater than two (e.g., five). After jacking to a preset height, installing the steel structure of the well, and finally, unloading the jacking iron 30 and the shoulder pole beam 20, and connecting and constructing the bottom of the jacking steel structure 50.

The shoulder pole beam 20 is horizontally arranged below the cross beam of the steel structure 50 to be lifted, is used as a main lifting stress structure, is connected with the first upright post 51 through a hoop, and lifts the section at a single section and lifts along with the cross beam. The jacks of the conversion type vertical jacking device are connected to the same pump station to synchronously control, and the pump station supplies oil to the jacks synchronously during jacking operation. The lifting top iron 30 is connected with the shoulder pole beam 20 or the upper section lifting top iron 30 through bolts and is connected with the first upright post 51 through hoops, and rises along with the lifting process. After each lifting stroke of the jack, the conversion bracket 22 is connected with the guide groove plate 11 of the counter-force platform 10 through a bolt, and the stress is converted. The jack oil discharge is retracted, and a new section of lifting top iron 30 is added between the jack and the previous section of lifting top iron 30. Repeating the steps until the steel structure is lifted to a single section with a preset height, carrying out on-site splicing and welding of a new section, and repeating the lifting construction of the next section after the on-site splicing and welding of the new section is completed.

The jacking method disclosed by the invention saves the construction site to the greatest extent, and especially has the advantages that the construction site is limited to the condition that the steel structure is installed with the self structure to occupy the ground and no redundant operation space exists. And large-scale hoisting equipment is not needed, and a construction operation platform, a scaffold and the like are not needed. Meanwhile, the construction cost can be reduced to the greatest extent, the operation is simple, the vertical in-situ jacking construction can be realized only by repeating the jacking process and the steel structure body installation process in the first floor ground height, and the construction efficiency is high.

While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (10)

1. A conversion type vertical jacking device, characterized by comprising:

the reaction platform is provided with guide groove plates extending in the height direction, and part of the guide groove plates in the height direction is provided with pin holes which are arranged at intervals;

the carrying pole beam is arranged below a cross beam of the steel structure to be lifted, one part of the carrying pole beam is connected with a first upright post of the steel structure to be lifted, and the other part of the carrying pole beam is used for connecting a pin hole on the guide groove plate after the steel structure to be lifted is lifted to a preset position in a single lifting process so as to realize conversion stress;

the lifting top iron is arranged at the bottom of the shoulder pole beam and is connected with the shoulder pole beam, and one part of the lifting top iron is connected with the first upright post of the rigid structure to be lifted;

and the jack system is arranged on the counter-force platform and supports the lifting jack iron so as to drive the lifting jack iron to lift in the height direction.

2. The conversion type vertical jacking device of claim 1, wherein said reaction force platform comprises:

a bottom plate for being disposed on a concrete structure of an elevator hoistway to be installed;

the second upright posts are vertically arranged on the bottom plate, every two second upright posts form an upright post group, the guide groove plate is arranged on the second upright posts, and one part of the shoulder pole beam is connected with the pin holes on the guide groove plate;

the lining plates are arranged at intervals along the height direction of the second upright posts, and each lining plate is connected with two second upright posts respectively.

3. The conversion type vertical jacking device of claim 2, wherein said reaction force platform further comprises:

the I-steel is arranged on the bottom plate, and the second upright post is arranged on the I-steel;

the reinforcing beams are arranged in different directions, and each reinforcing beam is connected with two second upright posts respectively.

4. The convertible vertical jack of claim 1, wherein the shoulder pole beam comprises:

the beam body is arranged at the bottom of the cross beam of the steel structure to be jacked;

the conversion bracket is connected with one side of the beam body, a mounting hole is formed in the conversion bracket, and the conversion bracket can be connected with the pin hole in the guide groove plate through the mounting hole;

the first anchor ear, first anchor ear with the opposite side swing joint of the roof beam body, form first centre gripping chamber in the first anchor ear, the space in first centre gripping chamber is adjustable, first anchor ear passes through first centre gripping chamber with wait to rise just first stand of structure and be connected.

5. A conversion type vertical jacking device according to claim 4, wherein the number of the conversion brackets is two, the two conversion brackets are arranged at intervals, and each conversion bracket is connected with the guide groove plate respectively.

6. The conversion type vertical jacking device according to claim 4, wherein the first anchor ear is movably connected with the beam body through a bolt hinge, a first connecting bolt is arranged at the end part, far away from the beam body, of the first anchor ear, and after the first anchor ear clamps the first upright post, the first anchor ear is clamped and fixed through the first connecting bolt.

7. The convertible vertical jack of claim 4, wherein a backing plate is disposed within the first anchor ear.

8. The convertible vertical jack of claim 2, wherein the elevating jack iron comprises:

the two opposite end surfaces of the jacking column are respectively used for connecting the shoulder pole beam and the other jacking column in the process of joint adding;

the second anchor ear, the second anchor ear with the jack-up post is connected, form the second centre gripping chamber in the second anchor ear, the second anchor ear passes through the second centre gripping chamber presss from both sides tightly the second stand.

9. The conversion type vertical jacking device according to claim 8, wherein a second connecting bolt is arranged at one end, far away from the jacking column, of the second hoop, and the second hoop clamps and fixes the first upright column through the second connecting bolt.

10. A jacking method applied to the conversion type vertical jacking device as claimed in any one of claims 1 to 9, wherein the jacking method comprises:

installing a counter-force platform and a jack system;

mounting a shoulder pole beam, and holding a first upright post of the rigid structure to be jacked by the shoulder pole beam;

the oil way of the jack system is connected and debugged;

jacking a first jacking stroke, and after the first jacking stroke is completed, connecting the jacking stroke with the counter-force platform through a conversion bracket of the shoulder pole beam through a bolt, and converting stress;

the jack system discharges oil and retracts, a lifting top iron is arranged, and the lifting top iron is used for holding the first upright post of the rigid structure to be lifted;

repeating the second to N jacking strokes, and installing a hoistway steel structure after jacking to a preset height;

and unloading the lifting top iron and the shoulder pole beam, and connecting and constructing the bottom of the steel structure to be lifted.