Lifting device and vertical in-situ lifting method

Abstract

The present invention discloses a jacking device and a vertical in-situ jacking method, wherein the jacking device comprises: a reaction platform, wherein the reaction platform is provided with a matching portion spaced apart in the longitudinal direction; a self-locking mechanism, wherein the self-locking mechanism is arranged on the reaction platform, wherein the self-locking mechanism comprises: a clamping portion and a jacking bracket, wherein the self-locking mechanism is arranged on the reaction platform, and the clamping portion is connected with the matching portion, wherein the structure to be jacked is placed flat on the jacking bracket, wherein the clamping portion can move on the reaction platform during the movement of the self-locking mechanism toward the top surface of the reaction platform, and the jacking bracket realizes the jacking of the structure to be jacked in the longitudinal direction; wherein when the self-locking mechanism stops moving, the clamping portion is clamped and fixed with the corresponding matching portion; and a jack, wherein the jack is arranged on the self-locking mechanism. The jacking device of the present invention is arranged in the structure to be jacked, is not restricted by the site, has an operating space outside the structure, and does not need to install additional structures such as scaffolding, is easy to use, and has a wide range of applications.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and more specifically, to a jacking device and a vertical in-situ jacking method. Background Art

[0002] The overall jacking method of steel structure is widely used in large-span steel structure projects such as grid and lattice shell installation. Generally, a jacking and telescopic device is set at the jacking point of the truss structure, and a jacking assembly unit is set under the jacking and telescopic device. The jacking and telescopic device adopts computer numerical control synchronization. After the truss structure is jacked up to a certain height, an assembly unit is installed between the installed assembly structure and the truss structure to increase the height. Repeat the above jacking process to achieve the overall jacking of the steel structure truss.

[0003] However, the overall jacking method requires adding new support units from the bottom of the truss structure each time. As the jacking height of the truss structure becomes higher and higher, the construction height and operation difficulty of the assembly unit become higher and higher.

[0004] In addition, the structure to be jacked (such as a truss) is generally pre-assembled on the ground, and then the jacking structure is installed for jacking. For steel structures with a high height but a small span (such as the shaft frame of an additional elevator), it is impossible to construct them in an overall jacking manner. Summary of the invention

[0005] One object of the present invention is to provide a new technical solution for a jacking device and a vertical in-situ jacking method, which can at least solve the problems in the prior art such as limited site, lack of operating space outside the structure and the need to set up scaffolding.

[0006] The first aspect of the present invention provides a jacking device, comprising: a reaction platform, wherein the reaction platform is provided with matching parts spaced apart in the longitudinal direction; a self-locking mechanism, wherein the self-locking mechanism is arranged on the reaction platform, and the self-locking mechanism comprises: a clamping part and a jacking corbel, wherein the self-locking mechanism is arranged on the reaction platform, and the clamping part is connected to the matching part, and the structure to be jacked is placed flat on the jacking corbel, and when the self-locking mechanism moves toward the top surface of the reaction platform, the clamping part can move on the reaction platform, and the jacking corbel realizes the jacking of the structure to be jacked in the longitudinal direction; when the self-locking mechanism stops moving, the clamping part is clamped and fixed with the corresponding matching part to limit the movement of the self-locking mechanism; a jack, wherein the jack is arranged on the self-locking mechanism, and the jack is used to drive the self-locking mechanism to move in the direction toward the top surface of the reaction platform to realize the jacking of the structure to be jacked.

[0007] Optionally, the reaction force platform includes: a base, which is used to be set on the concrete structure of the elevator shaft to be installed; a plurality of lifting columns, which are vertically arranged on the base, and every two of the second columns form a column group, and each of the lifting columns is provided with the matching part spaced apart in the longitudinal direction, and the clamping part of the self-locking mechanism is clamped and connected with the matching part.

[0008] Optionally, the matching portion forms a gear platform protruding from the surface of the lifting column, and the clamping portion forms a locking tongue, and the locking tongue is clamped with the gear platform.

[0009] Optionally, the reaction platform further comprises: a plurality of lining plates, wherein the plurality of lining plates are arranged at intervals along the height direction of the jacking columns, and each of the lining plates is respectively connected to corresponding two of the jacking columns.

[0010] Optionally, the self-locking mechanism also includes: a first lifting box and a second lifting box, the first lifting box and the second lifting box are spaced apart in the longitudinal direction, the first lifting box is close to the top surface of the reaction plane relative to the second lifting box, the jack is arranged between the first lifting box and the second lifting box, the clamping part is provided in the first lifting box and the second lifting box, and the lifting corbel is arranged on the first lifting box.

[0011] Optionally, the first lifting box includes: a first top plate; a first bottom plate, the first bottom plate and the first top plate are spaced apart, the first bottom plate is close to the second lifting box, and a first ear plate is provided at the bottom of the first bottom plate for connecting the jack; a first side plate, the first side plate is arranged between the first top plate and the first bottom plate, the first side plate is provided with a first pin hole for installing the mating part, and the first side plate is connected to the lifting corbel.

[0012] Optionally, the second lifting box includes: a second top plate, on which a second ear plate is provided for connecting the jack; a second bottom plate, which is spaced apart from the second top plate and is close to the first lifting box; and a second side plate, which is provided between the second top plate and the second bottom plate and on which a second pin hole is provided for connecting the mating part.

[0013] Optionally, there are two first side panels, a first back panel is disposed between the two first side panels, and there are two second side panels, a second back panel is disposed between the two second side panels.

[0014] Optionally, the jacking corbel includes: a third side plate, the third side plate is connected to the first jacking box or the second jacking box; a third top plate, the third top plate is arranged on the third side plate, and the third top plate is used to support the structure to be jacked; a stiffening plate, the stiffening plate is arranged on the third side plate.

[0015] A second aspect of the present invention provides a vertical in-situ lifting method, which is applied to the lifting device described in the above embodiment. The vertical in-situ lifting method comprises:

[0016] Install the reaction platform, self-locking mechanism and jack;

[0017] Connecting the clamping portion of the self-locking mechanism to the matching portion of the reaction force platform;

[0018] Use the jacking corbel to support the structure to be jacked;

[0019] Connect the oil circuit of the jack and debug it;

[0020] Lifting the first lifting stroke, and after completing the first lifting stroke, realizing the conversion of the force between the self-locking mechanism and the reaction force platform through the connection between the clamping part and the matching part;

[0021] Repeat the second to Nth jacking strokes. After jacking to the predetermined height, install the shaft steel structure and connect the construction on the structure to be jacked.

[0022] The jacking device of the present invention realizes the one-way locking function of the self-locking mechanism and the reaction platform by arranging a self-locking mechanism on the reaction platform and utilizing the locking connection between the clamping part and the matching part to complete the continuous jacking operation. The jacking device is arranged in the structure to be jacked, is not restricted by the site, has an operating space outside the structure, and does not need to install additional structures such as scaffolding, is easy to use, and has a wide range of applications.

[0023] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0025] Figure 1 is a structural schematic diagram of a self-locking mechanism according to an embodiment of the present invention;

[0026] Figure 2 is a schematic structural diagram of a reaction force platform according to an embodiment of the present invention;

[0027] Figure 3is a schematic structural diagram of a first lifting box according to an embodiment of the present invention;

[0028] Figure 4 is a schematic structural diagram of a second lifting box according to an embodiment of the present invention;

[0029] Figure 5 is a schematic structural diagram of a jacking corbel according to an embodiment of the present invention;

[0030] Figure 6 is a schematic structural diagram of a jack according to an embodiment of the present invention;

[0031] Figure 7 is a schematic structural diagram of a jacking device according to an embodiment of the present invention;

[0032] Figure 8 is a construction schematic diagram of a jacking device and a structure to be jacked according to an embodiment of the present invention;

[0033] Fig. 9 4 is a flow chart of a vertical in-situ lifting method according to an embodiment of the present invention.

[0034] Reference numerals:

[0035] Reaction platform 10; base 11; jacking column 12; matching part 13; lining plate 14;

[0036] Self-locking mechanism 20; first lifting box 21; first top plate 211; first bottom plate 212; first side plate 213; first pin hole 214; first back plate 215; first ear plate 216; second lifting box 22; second top plate 221; second bottom plate 222; second side plate 223; second pin hole 224; second back plate 225; second ear plate 226; clamping portion 23; lifting bracket 24; third side plate 241; third top plate 242; stiffening plate 243;

[0037] Jack 30;

[0038] Adjustment device 40;

[0039] Structure to be lifted 51; building concrete 52. DETAILED DESCRIPTION

[0040] 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 components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0041] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0042] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0043] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0044] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0045] In the specification and claims of the present invention, if the term "first" or "second" is involved, it may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the related objects are in an "or" relationship.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" involved should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] The jacking device according to the embodiment of the present invention is described in detail below with reference to the accompanying drawings.

[0049] like Figure 1 , Figure 7 and Figure 8As shown, the jacking device according to the embodiment of the present invention includes a reaction platform 10 , a self-locking mechanism 20 and a jack 30 .

[0050] Specifically, the reaction platform 10 is provided with a matching portion 13 arranged at intervals in the longitudinal direction. The self-locking mechanism 20 is provided on the reaction platform 10, and the self-locking mechanism 20 includes: a clamping portion 23 and a lifting bracket 24. The self-locking mechanism 20 is provided on the reaction platform 10, and the clamping portion 23 is connected to the matching portion 13. The structure to be lifted 51 is placed flat on the lifting bracket 24. When the self-locking mechanism 20 moves toward the top surface of the reaction platform 10, the clamping portion 23 can move on the reaction platform 10, and the lifting bracket 24 realizes the lifting of the structure to be lifted 51 in the longitudinal direction. When the self-locking mechanism 20 stops moving, the clamping portion 23 is clamped and fixed with the corresponding matching portion 13 to limit the movement of the self-locking mechanism 20. The jack 30 is provided on the self-locking mechanism 20, and the jack 30 is used to drive the self-locking mechanism 20 to move toward the top surface of the reaction platform 10 to realize the lifting of the structure to be lifted 51.

[0051] In other words, see Figure 1 , Figure 7 and Figure 8 According to the embodiment of the present invention, the lifting device is mainly composed of a reaction platform 10, a self-locking mechanism 20 and a jack 30. Figure 8 and Fig. 9 As shown, the reaction platform 10 is arranged on the concrete structure of the elevator shaft to be installed, and the reaction platform 10 is provided with matching parts 13 arranged in a longitudinal interval. The self-locking mechanism 20 is installed on the reaction platform 10, and the self-locking mechanism 20 includes a clamping part 23 and a jacking bracket 24, wherein, see Figure 2 and Figure 8 , the self-locking mechanism 20 is installed on the reaction platform 10, and the clamping part 23 of the self-locking mechanism 20 is connected with the matching part 13, so as to realize the locking and positioning of the self-locking mechanism 20 and the reaction platform 10. The structure 51 to be jacked is placed flat on the lifting bracket 24, which is used to support the structure 51 to be jacked, so as to realize the lifting operation of the structure 51 to be jacked. The self-locking mechanism 20 can move in the direction toward the top surface of the reaction platform 10, so as to realize the unidirectional locking of the self-locking mechanism 20. In the process that the self-locking mechanism 20 can move in the direction toward the top surface of the reaction platform 10, the clamping part 23 can move on the reaction platform 10, and the lifting bracket 24 realizes the lifting of the structure 51 to be jacked in the longitudinal direction. When the self-locking mechanism 20 stops moving, the clamping part 23 is clamped and fixed with the corresponding matching part 13, so as to limit the movement of the self-locking mechanism 20.

[0052] During the activity of the self-locking mechanism 20, when the self-locking mechanism 20 slides upward, the clamping portion 23 can retract due to the lateral force, and when subjected to downward force, the clamping portion 23 and the matching portion 13 are in contact and subjected to force, ensuring that the locking mechanism can only move upward during the lifting stage. Figure 1 and Figure 6 As shown, the jack 30 is installed on the self-locking mechanism 20 , and the jack 30 is used to drive the self-locking mechanism 20 to move toward the top surface of the reaction platform 10 to achieve the lifting of the structure 51 to be lifted.

[0053] Therefore, the jacking device according to the embodiment of the present invention realizes the one-way locking function of the self-locking mechanism 20 and the reaction platform 10 by setting the self-locking mechanism 20 on the reaction platform 10 and utilizing the locking connection between the clamping portion 23 and the matching portion 13, thereby completing the continuous jacking operation. The jacking device is arranged in the structure to be jacked 51, is not restricted by the site, has an operating space outside the structure, and does not need to install additional structures such as scaffolding, is easy to use, and has a wide range of applications.

[0054] In some specific embodiments of the present invention, the reaction platform 10 includes a base 11 and a plurality of jacking columns 12 .

[0055] Specifically, the base 11 is used to be set on the concrete structure of the elevator shaft to be installed. A plurality of lifting columns 12 are vertically arranged on the base 11, and every two second columns form a column group. Each lifting column 12 is provided with a matching portion 13 spaced apart in the longitudinal direction, and the clamping portion 23 of the self-locking mechanism 20 is clamped and connected with the matching portion 13. The matching portion 13 forms a gear platform protruding from the surface of the lifting column 12, and the clamping portion 23 forms a locking tongue, which is clamped with the gear platform. The reaction platform 10 also includes: a plurality of lining plates 14, and the plurality of lining plates 14 are spaced apart along the height direction of the lifting column 12, and each lining plate 14 is respectively connected to the corresponding two lifting columns 12.

[0056] That is to say, Figure 2 As shown, the reaction platform 10 is mainly composed of a base 11 and a plurality of lifting columns 12. Among them, the base 11 is used to be set on the concrete structure of the elevator shaft to be installed, and is fixed by anchor bolts. A plurality of lifting columns 12 are vertically arranged on the base 11, and every two second columns constitute a column group, and each lifting column 12 is provided with a matching portion 13 spaced apart in the longitudinal direction. The clamping portion 23 of the self-locking mechanism 20 is clamped and connected with the matching portion 13. The matching portion 13 is configured as a gear platform protruding from the surface of the lifting column 12. Optionally, the clamping portion 23 forms a locking tongue, and the locking tongue is clamped with the gear platform. The reaction platform 10 also includes a plurality of lining plates 14, and the plurality of lining plates 14 can be spaced apart along the height direction of the lifting column 12, and each lining plate 14 is respectively connected to the corresponding two lifting columns 12 to improve the stability of the overall structure of the reaction platform 10.

[0057] In the present invention, the reaction platform 10 is mainly assembled by welding a base 11 composed of I-beams and steel plates, 8 jacking columns 12, and longitudinal and transverse reinforcement structures. The base 11 is located on the concrete structure of the elevator shaft to be installed, and the reaction platform 10 is fixed to it by anchor bolts. The structural form of the 8 jacking columns 12 is composed of a panel with a toothed platform welded from large angle steel, and is connected to a whole by a liner 14 and a reinforcement channel steel. A toothed platform is set on the panel of the jacking column 12, which is used to connect with the lock tongue of the self-locking mechanism 20 during jacking.

[0058] According to one embodiment of the present invention, the self-locking mechanism 20 also includes: a first lifting box 21 and a second lifting box 22, the first lifting box 21 and the second lifting box 22 are arranged spaced apart in the longitudinal direction, the first lifting box 21 is close to the top surface of the reaction plane relative to the second lifting box 22, a jack 30 is arranged between the first lifting box 21 and the second lifting box 22, a clamping portion 23 is provided in the first lifting box 21 and the second lifting box 22, and a lifting bracket 24 is arranged on the first lifting box 21.

[0059] In other words, Figure 1 and Figure 3 As shown, the self-locking mechanism 20 also includes a first jacking box 21 and a second jacking box 22, and the first jacking box 21 and the second jacking box 22 can be spaced apart in the longitudinal direction. The first jacking box 21 is close to the top surface of the reaction plane relative to the second jacking box 22, and a jack 30 is arranged between the first jacking box 21 and the second jacking box 22, and the jack 30 can drive the first jacking box 21 to move upward along the jacking column 12. The first jacking box 21 and the second jacking box 22 are both provided with a clamping portion 23, and a jacking bracket 24 is arranged on the first jacking box 21. Through the upward movement of the first jacking box 21, the jacking bracket 24 is driven to jack up the structure to be jacked 51.

[0060] According to one embodiment of the present invention, the first lifting box 21 includes a first top plate 211 , a first bottom plate 212 and a first side plate 213 .

[0061] Specifically, Figure 1 and Figure 3 As shown, the first bottom plate 212 and the first top plate 211 are spaced apart, and the first bottom plate 212 is close to the second lifting box 22. A first ear plate 216 is provided at the bottom of the first bottom plate 212, and a pin hole connected to the first ear plate 216 is provided at the upper end of the jack 30 to achieve the connection between the first wall plate and the jack 30. The first side plate 213 is installed between the first top plate 211 and the first bottom plate 212, and a first pin hole 214 is provided on the first side plate 213. The matching portion 13 is movably connected to the first side plate 213 through the first pin hole 214, and the first side plate 213 is connected to the lifting bracket 24.

[0062] According to one embodiment of the present invention, the second lifting box 22 includes a second top plate 221 , a second bottom plate 222 and a second side plate 223 .

[0063] Specifically, the second top plate 221 is provided with a second ear plate 226 for connecting the jack 30. The second bottom plate 222 is spaced apart from the second top plate 221, and the second top plate 221 is close to the first lifting box 21. The second side plate 223 is provided between the second top plate 221 and the second bottom plate 222, and the second side plate 223 is provided with a second pin hole 224 for connecting the matching portion 13.

[0064] That is to say, Figure 1 and Figure 4 As shown, the second lifting box 22 includes a second top plate 221, a second bottom plate 222 and a second side plate 223. The second top plate 221 is provided with a second ear plate 226, and the bottom of the jack 30 is provided with a pin hole connected with the second ear plate 226, so as to realize the connection between the second bottom plate 222 and the jack 30. The second bottom plate 222 is spaced apart from the second top plate 221, and the second top plate 221 is close to the first lifting box 21. The second side plate 223 is installed between the second top plate 221 and the second bottom plate 222, and the second side plate 223 is provided with a second pin hole 224, and the matching portion 13 is movably connected to the second side plate 223 through the second pin hole 224, and the second side plate 223 is connected to the lifting bracket 24.

[0065] According to one embodiment of the present invention, see Figure 3 and Figure 4 There are two first side plates 213, and a first back plate 215 is disposed between the two first side plates 213. There are two second side plates 223, and a second back plate 225 is disposed between the two second side plates 223. By providing the first back plate 215 and the second back plate 225, the stability of the overall structure of the first lifting box 21 and the second lifting box 22 can be effectively improved.

[0066] In the present invention, the first lifting box 21 and the second lifting box 22 are made of steel plates by CNC cutting and assembled and welded, wherein the first side plate 213 reserves a corbel connection width and a pin hole for installing the lifting corbel 24. In addition, the first side plate 213 and the second side plate 223 both reserve a first pin hole 214 and a second pin hole 224 for connecting the lock tongue, for installing the lock tongue.

[0067] According to one embodiment of the present invention, the jacking corbel 24 includes a third side plate 241 , a third top plate 242 and a stiffening plate 243 .

[0068] Specifically, the third side plate 241 is connected to the first lifting box 21 or the second lifting box 22. The third top plate 242 is disposed on the third side plate 241, and the third top plate 242 is used to support the structure to be lifted 51. The stiffening plate 243 is disposed on the third side plate 241.

[0069] In other words, Figure 1 and Figure 5 As shown, the jacking corbel 24 is mainly composed of a third side plate 241, a third top plate 242 and a stiffening plate 243. Among them, the third side plate 241 is connected to the first jacking box 21 or the second jacking box 22. The third top plate 242 is installed on the third side plate 241, and the third top plate 242 is used to support the structure to be jacked 51. The stiffening plate 243 is installed on the third side plate 241. The third top plate 242 is provided with a limit plate. When jacking, the third top plate 242 is placed flat under the steel structure beam, and the template or rubber isolation is used. The limit plate can prevent displacement to a certain extent. The pin hole reserved in the jacking corbel 24 is connected to the first side plate 213 of the first jacking box 21 by a latch, which is convenient for disassembly and assembly.

[0070] In the present invention, the jack 30 is pin-connected with the first lifting box 21 and the second lifting box 22. The present invention adopts 8 200mm stroke jacks 30, dual oil circuit design, connected to the same pump station, and controlled by a PLC synchronization system to ensure the accuracy and synchronization performance of each lifting.

[0071] In the actual connection process of the jacking device of the present invention, the reaction platform 10 is placed flat on the top surface of the concrete of the elevator shaft foundation pit and fixed with anchor bolts. The first jacking jacking box, the second jacking jacking box 22, the jack 30 and the jacking bracket 24 of the self-locking mechanism 20 are connected to each other with high-strength pins, and cotter pins are installed to prevent them from falling off. The lower front end of the lock tongue is installed with a spring connected to the top plate of the first jacking jacking box and the second jacking jacking box 22. The spring is tightened to make the lock tongue in a normally extended state. The self-locking mechanism 20 can slide freely during the ascending process (the spring is stretched and slightly stressed), and the descending process needs to be manually adjusted to ensure safety during the jacking process.

[0072] The steps of installing the self-locking mechanism 20 on the reaction platform 10 are as follows: install the lock tongue in the first jacking jacking box and the second jacking jacking box 22 respectively, then insert the top / bottom plate slots of the first jacking jacking box and the second jacking jacking box 22 along the gear table of the reaction platform 10, and then install the jack 30 and the jacking bracket 24. The jacking bracket 24 of the self-locking mechanism 20 is placed flatly under the crossbeam of the steel structure of the hoistway to be jacked, and is isolated with pads or rubber to prevent damage to the steel structure.

[0073] In the present invention, the jacking device may further include an adjusting device 40, which is arranged on the building concrete 52 to ensure that there is no deviation in the jacking process.

[0074] In summary, the jacking device according to the embodiment of the present invention realizes the one-way locking function of the self-locking mechanism 20 and the reaction platform 10 by setting the self-locking mechanism 20 on the reaction platform 10 and utilizing the locking connection between the clamping portion 23 and the matching portion 13, thereby completing the continuous jacking operation. The jacking device is arranged in the structure to be jacked 51, is not restricted by the site, has an operating space outside the structure, and does not need to install additional structures such as scaffolding, is easy to use, and has a wide range of applications.

[0075] Of course, for those skilled in the art, other structures and working principles of the jacking device are understandable and achievable, and will not be described in detail in the present invention.

[0076] According to a second aspect of the present invention, a vertical in-situ lifting method is provided, which is applied to the lifting device in the above embodiment, such as Fig. 9 As shown, the vertical in-situ lifting method includes:

[0077] Install the reaction platform 10, the self-locking mechanism 20 and the jack 30;

[0078] Connect the clamping portion 23 of the self-locking mechanism 20 to the matching portion 13 of the reaction platform 10;

[0079] The jacking bracket 24 supports the structure to be jacked 51;

[0080] Connect the oil circuit of jack 30 and debug;

[0081] The first lifting stroke is performed, and after the first lifting stroke is completed, the self-locking mechanism 20 and the reaction force platform 10 are switched by connecting the clamping portion 23 and the matching portion 13;

[0082] Repeat the second to Nth jacking strokes. After jacking to a predetermined height, install the shaft steel structure and connect the construction on the structure to be jacked 51.

[0083] That is to say, in the vertical in-situ jacking method of the present invention, first, the reaction platform 10, the self-locking mechanism 20 and the jack 30 can be installed. Then, the clamping portion 23 of the self-locking mechanism 20 can be connected to the matching portion 13 of the reaction platform 10, and the jacking bracket 24 can support the structure to be jacked 51. Next, the oil circuit of the jack 30 is connected and debugged. The first jacking stroke is lifted, and after the first jacking stroke is completed, the force conversion between the self-locking mechanism 20 and the reaction platform 10 is realized through the connection between the clamping portion 23 and the matching portion 13. Repeat the second to Nth jacking strokes, and after jacking to a predetermined height, install the shaft steel structure, and connect the construction on the structure to be jacked 51.

[0084] In the actual lifting process, see Fig. 9, it is necessary to make tooling parts, purchase or rent jacks 30, and assemble the tooling as a whole. Then carry out no-load debugging, load testing, internal acceptance of tooling, and transportation of tooling. Then you can confirm the construction of the elevator shaft and prepare the jacking site, complete the on-site installation of the tooling, and carry out secondary debugging of the tooling, external acceptance of the tooling, and pre-jacking inspection. In the jacking process, it is necessary to process the shaft material, assemble the top segments, and install the lifting platform. Then assemble the standard segments and jack up to the top in a cycle. In this process, it is necessary to prepare for demolition and remove the door openings on each floor. Then, construct the bottom shear resistance. After the bottom shear resistance is constructed, the permanent bracket can be constructed and the external aluminum plate can be installed. Finally, the lifting platform is removed and the construction is completed.

[0085] In the main operation process of jacking, first, complete the debugging of the self-elevating steel structure jacking device, then assemble the top segment on site, conduct a pre-jacking inspection, and fill in the inspection record. Next, carry out overall jacking, with each jacking stroke not exceeding 200mm, and record the working data of jack 30 and pump station. After the first section is jacked to the standard height, install the three-way adjustable guide rail (adjustment device 40) and assemble the standard segment columns and beams. The columns fall to the bottom plate of the jacking platform and the force is converted. Then, unload the oil and lower the self-locking jacking device. Repeat the above steps to jack to the top.

[0086] The lifting principle of the present invention is that the upper / lower lifting box (the first lifting box 21 and the second lifting box 22) of the self-locking mechanism 20 is provided with a locking tongue, which is pulled by a spring and is in a normally extended state. When sliding upward, the locking tongue can be retracted by the lateral force, and when being forced downward, the locking tongue is in contact with the gear table and can only move upward during the lifting stage. The jacks 30 of the self-locking mechanism 20 are connected to the same pump station for synchronous control. During the lifting operation, the pump station supplies oil to each jack 30 synchronously.

[0087] During the force-generating lifting stage, the locking tongue of the second lifting box 22 is subjected to force and remains relatively still and stressed with the gear stage, and the first lifting box 21 drives the lifting bracket 24 to vertically lift the entire steel structure.

[0088] During the oil return climbing stage, the locking tongue of the first lifting box 21 is kept relatively still and stressed with the gear stage, and the jack 30 retracts, driving the second lifting box 22 to climb to the right position, and then the second jack 30 stroke construction is carried out.

[0089] The single working height of the self-locking mechanism 20 is the stroke of a jack 30 and the gear height (150-200mm). Repeat the above-mentioned lifting steps until the steel structure is lifted to the predetermined height of a single section (2.5-4m), and then assemble and weld one section of the elevator shaft steel structure frame on site. After completion, repeat the lifting construction of the next section until the entire elevator shaft steel structure frame is lifted to the designed height.

[0090] In summary, according to the vertical in-situ jacking method of the embodiment of the present invention, by setting the self-locking mechanism 20 on the reaction platform 10, the locking connection between the clamping part 23 and the matching part 13 is utilized to realize the one-way locking function of the self-locking mechanism 20 and the reaction platform 10, and complete the continuous jacking operation. This vertical in-situ jacking method can save the construction site to the greatest extent, especially for the situation where the construction site is limited to the steel structure installation itself and there is no extra operating space. No large-scale lifting equipment is required, no construction operation platform and scaffolding are required, and the construction cost is reduced to the greatest extent. In addition, the operation is simple, and the personnel only need to repeat the jacking process and the steel structure body installation process within the ground height of the first floor to realize the vertical in-situ jacking construction, and the construction efficiency is high.

[0091] Although some specific embodiments of the present 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 present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A lifting device, characterized in that: include: A reaction force platform, wherein the reaction force platform is provided with matching parts spaced apart in the longitudinal direction; A self-locking mechanism, wherein the self-locking mechanism is arranged on the reaction force platform, and the self-locking mechanism comprises: a first lifting sleeve box, a second lifting sleeve box, a clamping part and a lifting bracket, and the clamping part is connected to the matching part, and the structure to be lifted is placed flat on the lifting bracket. When the self-locking mechanism moves toward the top surface of the reaction force platform, the clamping part can move on the reaction force platform, and the lifting bracket realizes the lifting of the structure to be lifted in the longitudinal direction; when the self-locking mechanism stops moving, the clamping part is clamped and fixed with the corresponding matching part to limit the movement of the self-locking mechanism; A jack, the jack being arranged on the self-locking mechanism, the jack being used to drive the self-locking mechanism to move in a direction toward the top surface of the reaction platform to realize the jacking of the structure to be jacked, the reaction platform comprising: A base, the base being used to be arranged on a concrete structure of an elevator shaft to be installed; 8 jacking columns, 8 jacking columns are vertically arranged on the base, every two jacking columns form a column group, the structural form of the 8 jacking columns is a large angle steel welded panel with a toothed platform, each jacking column is provided with the matching part at intervals in the longitudinal direction, the clamping part of the self-locking mechanism is clamped and connected with the matching part, the matching part forms a toothed platform protruding from the surface of the jacking column, the clamping part forms a locking tongue, the locking tongue is clamped with the toothed platform, the lower front end of the locking tongue is installed with a spring connected to the top plate of the first jacking jacking box and the second jacking box, the spring is tightened so that the locking tongue is in a normally extended state, the locking tongue can be retracted by lateral force when sliding upward, and can only move upward in the jacking stage when subjected to downward force; the reaction platform also includes: a plurality of lining plates, a plurality of lining plates are arranged at intervals along the height direction of the jacking column, and each of the lining plates is respectively connected to the corresponding two jacking columns; The first jacking box and the second jacking box are arranged spaced apart in the longitudinal direction, the first jacking box is closer to the top surface of the reaction platform relative to the second jacking box, the jack is arranged between the first jacking box and the second jacking box, the first jacking box and the second jacking box are both provided with the clamping part, and the jacking bracket is arranged on the first jacking box; The first lifting box comprises: First top plate; A first bottom plate, wherein the first bottom plate and the first top plate are spaced apart from each other, the first bottom plate is close to the second lifting box, and a first ear plate is provided at the bottom of the first bottom plate for connecting the jack; A first side plate, the first side plate is arranged between the first top plate and the first bottom plate, the first side plate is provided with a first pin hole for installing the clamping portion, and the first side plate is connected to the jacking corbel; The second lifting box comprises: a second top plate, wherein a second ear plate is provided on the second top plate for connecting the jack; a second bottom plate, the second bottom plate being spaced apart from the second top plate, the second top plate being close to the first lifting box; A second side plate, the second side plate is arranged between the second top plate and the second bottom plate, and the second side plate is provided with a second pin hole for connecting the clamping portion; The top plate and bottom plate slots of the first lifting box and the second lifting box are inserted into the gear table of the reaction platform.

2. The lifting device according to claim 1, characterized in that: There are two first side panels, and a first back panel is disposed between the two first side panels. There are two second side panels, and a second back panel is disposed between the two second side panels.

3. The lifting device according to claim 1, characterized in that: The jacking bracket comprises: a third side plate, the third side plate being connected to the first lifting box or the second lifting box; A third top plate, the third top plate is arranged on the third side plate, and the third top plate is used to support the structure to be lifted; A stiffening plate is arranged on the third side plate.

4. A vertical in-situ lifting method, applied to the lifting device according to any one of claims 1 to 3, characterized in that: The vertical in-situ lifting method comprises: Install the reaction platform, self-locking mechanism and jack; Connecting the clamping portion of the self-locking mechanism to the matching portion of the reaction force platform; Use the jacking corbel to support the structure to be jacked; Connect the oil circuit of the jack and debug it; Lifting the first lifting stroke, and after completing the first lifting stroke, realizing the conversion of the force between the self-locking mechanism and the reaction force platform through the connection between the clamping part and the matching part; Repeat the second to Nth jacking strokes. After jacking to the predetermined height, install the shaft steel structure and connect the construction on the structure to be jacked.

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