Building jacking equipment and method

Abstract

The invention relates to the field of building lifting, in particular to building jacking equipment and method. Building jacking equipment comprises a foundation supporting frame, an additionally-installed supporting frame used for being additionally installed above the foundation supporting frame and a jack, supporting legs are arranged at the bottom of the jack, and supporting holes are formed in the foundation supporting frame and the additionally-installed supporting frame. In the stroke of rotating relative to the jack, the supporting leg has a contraction state in which the supporting leg is in contact with the upper side wall of the supporting hole and relatively contracts, and an expansion state in which the supporting leg is expanded to be in backstop fit with the lower side wall of the supporting hole. When the jack and the supporting legs ascend, the supporting legs can contract and do not become hindrance, and when the supporting legs descend, the supporting legs can be matched with the supporting holes to facilitate upward jacking of the jack. The problems that in the prior art, two sets of jack equipment are needed for jacking, and cushion blocks and gaskets need to be manually arranged in a cushioning mode, so that cost is increased, and the labor intensity of workers is large are solved.

Description

Technical Field

[0001] The present invention relates to the field of building lifting, and in particular to a building lifting device and method. Background Art

[0002] In recent years, with the deepening of urban renewal, building jacking has become one of the important means of renovation and protection of existing buildings and urban architectural heritage. Building jacking is a construction method that lifts the entire building or part of its structure from the original foundation to a set height. Before building jacking, it is usually necessary to build a support structure (also called a temporary support structure or transfer beam). The main function of this structure is to transfer the weight of the building evenly to the new foundation and ensure that the building can remain stable during the jacking process. After the foundation support is completed, the A / B groups of jacks are used to alternately jack the building. Specifically, before the jacking construction, the A group of jacks first support the support structure, and the original foundation walls and beams are removed, and the building is transferred from the original foundation to the A group of jacks. During the jacking construction, after the A group of jacks completes the first jacking formation, the B group of jacks will continue the second jacking stroke at the new elevation position, and the weight is transferred to the B group of jacks. After that, the first steel jacks of group A will carry out artificial padding, and then the third jacking stroke will be completed by the jacks of group A, and then the jacking will be carried out alternately and reciprocatingly until the building is jacked up to the designed elevation. Finally, after using temporary steel structure to support the top, the jacks will be removed, and then the permanent reinforced concrete foundation beams or walls will be constructed.

[0003] However, this jacking method has the following disadvantages: first, two sets of jacking jack equipment are required, and the equipment demand is large; second, anchor plates are embedded in the corresponding positions of the jacking jacks of the underpinning structure (pallet beam), and the steel bar construction of the underpinning structure node is difficult, and the anchor plate positioning requirements are high; third, alternating jacking with A / B group jacks requires manual addition of pads and washers to change the elevation status of the follow-up jacks, which requires a lot of materials and a long jacking construction time; fourth, after the jacking construction is completed, the A / B group jacks have a large number of equipment and the workload of disassembling is large, and the construction of the temporary supporting structure is time-consuming and material-intensive. Summary of the invention

[0004] In view of this, the present invention provides a construction jacking device to solve the problem in the prior art that jacking requires two sets of jacking equipment and manual padding of blocks and washers, which increases costs and increases labor intensity for workers; the present invention also provides a construction jacking method to solve the above technical problems.

[0005] A building jacking device comprises a basic support frame for being arranged below a supporting structure, an additional support frame for being installed above the basic support frame and a jack, the basic support frame and the additional support frame are separately arranged, and a supporting leg is arranged at the bottom of the jack, and both the basic support frame and the additional support frame are provided with supporting holes for accommodating the supporting legs, which are located on both sides of the jack and arranged at intervals up and down, and the supporting holes on both sides are symmetrically arranged, and the supporting legs have two groups and are respectively hingedly arranged on both sides of the jack, and the supporting legs have a contracted state in which they contact the upper side wall of the supporting hole and relatively contract so that the supporting legs can cross support holes of different heights during the rotation stroke relative to the jack, and an expanded state in which they are expanded so that the supporting legs can enter the support hole and cooperate with the lower side wall stop of the support hole, and the upper surface of the supporting leg has a first guide surface for contacting the upper side wall of the support hole.

[0006] Furthermore, a hinge shaft is provided at the bottom of the jack, the support legs are hingedly provided on the hinge shaft, and at least one group of support legs is provided with a limiting structure for abutting against another group of support legs when the retracted state is converted into the expanded state.

[0007] Furthermore, one of the groups of supporting legs has a groove, and the other group of supporting legs is provided with a protrusion that matches the groove, and the protrusion constitutes the limiting structure, and the limiting structure is located above the hinge shaft.

[0008] Furthermore, the building jacking equipment also includes a lifting leg located above the jack, the lifting leg having two groups and being hingedly arranged on both sides of the jack respectively, and the lifting leg having a contracted state in which the lifting leg contacts the upper side wall of the support hole and relatively contracts so that the lifting leg can cross the support holes of different heights during the rotation stroke relative to the jack, and an expanded state in which the lifting leg is expanded so that the lifting leg enters the support hole and cooperates with the lower side wall stop of the support hole, and the upper surface of the lifting leg has a second guide surface for contacting the upper side wall of the support hole.

[0009] Furthermore, mounting plates are respectively arranged between the jack and the supporting legs and between the jack and the lifting legs.

[0010] Furthermore, a plurality of groups of horizontally arranged rollers are provided on the basic support frame, and the upper side wall and the lower side wall of the support hole are both composed of the rollers.

[0011] Furthermore, when the supporting legs are in the unfolded state, the first guide surface is an inclined surface extending obliquely downward from the center to the edge, and the edge of the first guide surface has an arc transition.

[0012] Furthermore, the basic support frame includes a left frame and a right frame that are separately arranged, the jack is arranged between the left frame and the right frame, and a connecting rod is also connected between the left frame and the right frame.

[0013] Furthermore, the building jacking equipment also includes a support frame base for being arranged at the bottom of the basic support frame, and an indicating structure for indicating the positions of the left-side upright frame and the right-side upright frame is arranged on the support frame base.

[0014] The beneficial effects of the building jacking device of the present invention are as follows: in the building jacking device of the present invention, the basic support frame is used to facilitate the initial support of the underpinning structure during jacking, the jack is provided to facilitate active jacking of the building, and the additional support frame is provided to facilitate re-support of the underpinning structure after the jacking, legs are provided on the jack, and support holes are provided on the basic support frame and the additional support frame, so that the jack and the basic support frame can cooperate with each other conveniently, and since a plurality of support holes are arranged at intervals up and down, that is, when the legs of the jack enter different support holes, the heights of the jack are different, that is, the basic support frame can also serve as the supporting base of the jack. The support legs of the jack are hinged on both sides of the jack and have a certain degree of rotational freedom. During the rotation stroke, the support legs have a retracted state and an expanded state, and the support legs are in contact with the upper side wall of the support hole and relatively contracted during the rotation stroke relative to the jack. When in the expanded state, the support is matched with the lower side wall stop of the support hole, that is, when the jack is connected to the support legs and rises, the support legs will contract and will not become an obstacle, and when the support legs are lowered, the support legs will cooperate with the support holes to facilitate the upward lifting of the jack; thereby solving the problem in the prior art that jacking requires two sets of jack equipment and requires manual padding of blocks and washers, which increases costs and has high labor intensity for workers.

[0015] A building jacking method uses the above-mentioned building jacking equipment. Before jacking, a basic support frame is set at the bottom of a supporting structure and a jack is installed in the basic support frame together with supporting legs. After the jack completes one jacking and jacks the supporting structure to a certain distance from the supporting surface of the basic support frame, an additional support frame is installed on the top of the basic support frame, and the top of the jack is limited on the additional support frame. Then, the jack is controlled to retract so that the jack drives the supporting legs to rise and adapt to the supporting holes of the corresponding height. The jacking and installation of the additional support frame are repeated until the preset height is reached.

[0016] The beneficial effects of the building jacking method of the present invention are as follows: the building jacking method of the present invention facilitates the subsequent jacking of the underpinning structure by first supporting the base support frame at the bottom of the underpinning structure. Since the support legs must cooperate with the base support frame, the jack and the support legs are simultaneously placed in the base support frame for easy assembly. After the jack completes a jacking, the distance between the underpinning structure and the base support frame will become larger. At this time, the additional support frame is installed within the distance, that is, the support surface supporting the underpinning structure is raised. Since the support legs can be relative to the base support frame and the additional support legs, the support surface of the underpinning structure is raised. The support frame rises, and during the rising process, the additional support frame can complete the support of the underpinning structure, thereby facilitating the transfer of weight from the jack to the support frame, facilitating the use of the jack to rise and insert the support into support holes at different heights. In other words, the jack can climb upward using the support legs and support holes at the bottom, so that different support holes can become the jacking basis respectively, and a single set of jacks can also gradually raise the position of the jacks, thereby solving the problem in the prior art that jacking requires two sets of jack equipment and requires manual padding of blocks and washers, which increases costs and increases the labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of a basic support frame in an embodiment of a building jacking device in the present invention;

[0019] Figure 2 It is a front view of a basic support frame in an embodiment of a building jacking device in the present invention;

[0020] Figure 3 It is a structural schematic diagram of an embodiment of the building jacking equipment in the present invention in which a support frame is added;

[0021] Figure 4 It is a front view of an embodiment of the building jacking device of the present invention in which a support frame is added;

[0022] Figure 5 It is a schematic diagram of the coordination of the support frame and the top cover plate installed in the embodiment of the building jacking equipment in the present invention;

[0023] Figure 6 It is a structural schematic diagram of a support frame base in an embodiment of a building jacking device in the present invention;

[0024] Figure 7It is a schematic diagram of assembling a basic support frame and an additional support frame in an embodiment of the building jacking equipment of the present invention;

[0025] Figure 8 It is a structural schematic diagram of a self-climbing jack in an embodiment of the building jacking equipment in the present invention;

[0026] Fig. 9 It is a schematic diagram of the cooperation between the self-climbing jack and the foundation support frame in the embodiment of the building jacking equipment of the present invention (before jacking);

[0027] Fig.10 It is a schematic diagram of the cooperation between the self-climbing jack and the foundation support frame in the embodiment of the building jacking equipment of the present invention (after jacking);

[0028] Fig.11 It is a schematic diagram of installing a left vertical frame and a right vertical frame in an embodiment of the building jacking method of the present invention;

[0029] Fig.12 It is a schematic diagram of installing a connecting rod in a basic support frame in an embodiment of the building jacking method of the present invention;

[0030] Fig.13 It is a schematic diagram of the first jacking of the self-climbing jack in the embodiment of the building jacking method of the present invention;

[0031] Fig.14 It is a schematic diagram of installing an additional support frame after completing the first jacking in an embodiment of the building jacking method of the present invention;

[0032] Fig.15 It is a schematic diagram from another perspective of installing an additional support frame after completing the first jacking in an embodiment of the building jacking method of the present invention.

[0033] The meanings of the numbers in the figure are: 1. Basic support frame; 11. Left vertical frame; 12. Right vertical frame; 13. Support hole; 14. Roller; 15. Connecting rod; 2. Support frame base; 21. Indicator protrusion; 3. Additional support frame; 31. Left U-shaped frame; 32. Right U-shaped frame; 33. Stop groove; 34. Stop protrusion; 35. Top cover plate; 36. Connecting pin; 4. Support leg; 41. First mounting plate; 42. Ear plate; 43. Limit protrusion; 44. Limit groove; 5. Lifting leg; 51. Second mounting plate; 6. Jack; 7. Support structure. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0035] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0036] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms and should not be understood as indicating or implying relative importance. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0037] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0039] In the following description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention, and have no specific meanings. Therefore, "module" and "component" can be used interchangeably.

[0040] In order to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings.

[0041] In the embodiment 1 of the building jacking device of the present invention:

[0042] In this embodiment, the building jacking equipment includes a support frame for being set at the bottom of the supporting structure. A self-climbing jack is also arranged in the support frame. The self-climbing jack can be jacked based on the support frame. Support holes are arranged on the support frame. The support holes are arranged at intervals up and down. When the self-climbing jack is located in different support holes, the initial height of the self-climbing jack is different, which avoids the manual padding of washers and blocks and saves the setting of another set of jacks.

[0043] During the process of building lifting, the height of the building and the supporting structure is constantly increasing. In order for the support frame to be able to support the continuously rising supporting structure, the height of the support frame needs to be kept high. Figure 1-4 As shown, in this embodiment, the support frame includes a basic support frame 1 and an additional support frame 3. The basic support frame 1 and the additional support frame 3 are separately arranged, and the additional support frame 3 is used to be installed on the top of the basic support frame 1 to facilitate increasing the height of the support frame.

[0044] The basic support frame 1 includes a left frame 11 and a right frame 12 which are separately arranged. The left frame 11 and the right frame 12 are plate-shaped as a whole. The left frame 11 and the right frame 12 are arranged in parallel and spaced apart. The structures of the left frame 11 and the right frame 12 are arranged relatively but symmetrically. The structure of the frame on one side is described as an example. The left frame 11 includes a column and a partition. There are three columns and they are all arranged vertically. The partition is located between two adjacent columns, thereby dividing the left frame 11 into a grid structure. The holes in the grid are support holes 13. In order to maintain the structural strength of the basic support frame 1 during the support process, the columns and the partitions are integrally formed. In order to facilitate the connection of the left frame 11 and the right frame 12 as a whole, a connecting rod 15 is also provided between the left frame 11 and the right frame 12, and a connecting hole or a connecting screw for connecting with the connecting rod 15 is also provided at the end of the left frame 11 and the right frame 12. Connecting rods 15 are provided on both sides of the left stand 11 and the right stand 12, and the connecting rods 15 on each side form a Z shape, so that the left stand 11, the right stand 12 and the connecting rods 15 can be combined into a basic support frame 1 with a relatively large structural strength. Of course, in other embodiments, the connecting rods can also be set in other forms, or the basic support frame can be set as an integrated type.

[0045] In order to facilitate the installation, the left stand 11 and the right stand 12 are placed in place, and a support frame base 2 is also provided at the bottom of the basic support frame 1. The support frame base 2 is in the shape of a plate, and four L-shaped indicating protrusions 21 are also provided on the upper plate surface of the support frame base 2. The four L-shaped indicating protrusions 21 define the installation positions of the left stand 11 and the right stand 12, that is, as long as the left stand 11 and the right stand 12 are set close to the L-shaped indicating protrusions 21, it can be ensured that the left stand 11 and the right stand 12 meet the installation position, and the connecting rod 15 can be easily assembled to the basic support frame 1. In order to improve the strength, a reinforcing rib is also provided on the outside of the L-shaped indicating protrusion 21. Alternatively, in other embodiments, the form of the support frame base can also be changed, and only a mark is left on the top without a protrusion, which only serves as an indicator. Alternatively, in other embodiments, the support frame base can also be no longer provided.

[0046] The additional support frame 3 is set in a split manner, so that it can be installed on the outer periphery of the jack 6 when the jack 6 is in a state of supporting the replacement structure 7. Specifically, the additional support frame 3 includes a left U-shaped frame 31 and a right U-shaped frame 32 that are set in a split manner. The U-shaped frames on both sides have the same structure and are arranged alternately at the port position, so as to be able to be assembled into a frame shape. Long holes are opened on the U-shaped side walls of the left U-shaped frame 31 and the right U-shaped frame 32, and the long holes on both sides cooperate with each other. After the connecting pin 36 is installed, the left U-shaped frame 31 and the right U-shaped frame 32 can be assembled together. In order to avoid the basic support frame 1 and the additional support frame 3 being staggered on the horizontal plane after being assembled, resulting in support failure, a plurality of stop grooves 33 are set on the top of the basic support frame 1, and a stop protrusion 34 adapted to the stop groove 33 is set on the bottom end of the additional support frame 3, and the stop groove 33 and the stop protrusion 34 cooperate with each other to complete the limit on the horizontal plane. Similarly, a stop groove 33 is also provided at the top of the additional support frame 3, so as to facilitate the adaptation with the bottom of another additional support frame 3. In addition, on the uppermost additional support frame 3, since it is no longer necessary to assemble other additional support frames 3, a top cover plate 35 is provided on the uppermost additional support frame 3, and the stop groove 33 on the additional support frame 3 is covered by the top cover plate 35. Of course, in other embodiments, the stop groove and the stop protrusion may not be provided, and the additional support frame and the basic support frame are welded together after the docking is completed.

[0047] The self-climbing jack includes a jack 6, a support leg 4 located at the bottom of the jack 6, and a lifting leg 5 located at the top of the jack 6. Specifically, a mounting plate is provided at the bottom of the self-climbing jack, and the mounting plate is denoted as a first mounting plate 41. The plate surface of the first mounting plate 41 is perpendicular to the extension and contraction direction of the jack 6. The first mounting plate 41 is located between the jack 6 and the support leg 4. An ear plate 42 is provided at the bottom of the first mounting plate 41. The support leg 4 is hingedly provided on the ear plate 42, so that the support leg 4 is indirectly hingedly provided on the jack 6. At the same time, a second mounting plate 51 is also provided at the top of the jack 6. An ear plate 42 is also provided at the top of the second mounting plate 51. The lifting leg 5 is hingedly provided on the ear plate 42. The climbing of the jack 6 is facilitated by the support leg 4 and the lifting leg 5. That is, the jack 6, the support leg 4 and the lifting leg 5 together constitute the self-climbing jack.

[0048] The supporting legs 4 and the lifting legs 5 have the same structure. In this embodiment, the supporting legs 4 are used as an example for structural description. There are two groups of supporting legs 4, and the two groups of supporting legs 4 are respectively arranged on both sides of the jack 6. The two groups of supporting legs 4 and the jack 6 have the same hinge axis. During the rotation stroke, the supporting legs 4 have a contracted state in which they contact with the upper side wall of the supporting hole 13 and contract relatively so that the supporting legs 4 can cross the supporting holes 13 of different heights, and an expanded state in which they are expanded so that the supporting legs 4 enter the supporting hole 13 and cooperate with the lower side wall stopper of the supporting hole 13. The unidirectional upward movement of the supporting legs 4 can be achieved by switching between the two states of the supporting legs 4. In order to achieve stable support in the supporting state, a group of supporting legs 4 is provided with a limiting structure for contacting with another group of supporting legs 4 when the contracted state is converted into the expanded state. Specifically, one group of supporting legs 4 has a limiting groove 44, and the other group of supporting legs 4 is provided with a limiting protrusion 43 that cooperates with the limiting groove 44. The limiting protrusion 43 constitutes the limiting structure, and the limiting structure is located above the hinge axis. When the supporting legs 4 move upward, they will contact with the upper side wall of the supporting hole 13 so that the ends of the supporting legs 4 are relatively close, so that the size of the supporting legs 4 on the horizontal plane is reduced, which is convenient for rising. When descending, the two groups of supporting legs 4 are in the expanded state. At this time, the supporting legs 4 cooperate with the lower side wall stopper of the supporting hole 13. At this time, the supporting legs 4 can serve as the base of the jack 6 to lift the jack 6. That is to say, under the action of the supporting legs 4, the jack 6 can only rise but not fall.

[0049] In order to better allow the jack 6 to continue to rise, the lifting legs 5 are arranged in the same direction as the supporting legs 4. That is, the lifting legs 5 can only move upwards and will not move downwards. When the telescopic rod of the jack 6 is extended, the supporting legs 4 cooperate with the lower side wall stop of the supporting leg, and the supporting legs 4 will not fall. At this time, the lifting legs 5 cooperate with the upper side wall of the supporting hole 13 to reach a contracted state, which facilitates the lifting legs 5 to rise until the lifting legs 5 rise to a higher supporting hole 13. After the jack 6 completes a jacking, the telescopic rod of the jack 6 needs to be retracted. During the retraction process, the lifting legs 5 of the self-climbing jack cooperate with the lower side wall stop of the supporting hole 13, so that only the supporting legs 4 can rise. At this time, the supporting legs 4 cooperate with the upper side wall stop of the supporting hole 13, and rise to the upper supporting hole 13 after entering the contracted state. Afterwards, when the jack 6 is extended again, the jack 6 can use the new support hole 13 located further up as the lifting basis of the jack 6, that is, there is no need to manually replace the two groups of jacks 6, and a single group of jacks 6 can achieve gradual ascent.

[0050] In order to realize the automatic switching between the unfolded state and the retracted state, in this embodiment, a roller 14 is further arranged between the columns between the left stand 11 and the right stand 12. The roller 14 is located on the inner side of the stand, so as to be convenient for directly cooperating with the support leg 4 and the lifting leg 5. The upper surface of the support leg 4 for contacting with the upper side wall of the support hole 13 constitutes a first guide surface that can guide the support leg 4 during the switching process between the two groups of states. When the support leg 4 is in the unfolded state, the first guide surface is an inclined surface extending obliquely downward from the center to the edge, and the edge of the first guide surface has a circular arc transition. During the rising process of the support leg 4, the first guide surface set obliquely and the arc transition at the edge position are in the drum 14, which can make the support leg 4 slightly deformed by extrusion and interference fit. After the support leg 4 passes over the drum 14, the force on the support leg 4 disappears, and the deformation also disappears synchronously. At this time, the support leg 4 expands outward. Since the support leg 4 only has an arc transition at the top, after the bottom of the support leg 4 cooperates with the drum 14, the support leg 4 cannot pass over the drum 14 again downward, thereby realizing the unidirectional rise of the support leg 4. The drum 14 also constitutes the upper side wall or the lower side wall of the support hole 13. Of course, the lifting leg 5 and the support leg 4 have the same structure. Of course, in other embodiments, an elastic member can also be provided between the two groups of support legs 4, and the elasticity of the elastic member itself makes the two groups of support legs 4 become contracted only under the state of external force. Or, in other embodiments, the drum 14 is no longer provided, and the support leg 4 is directly in contact with the support hole 13 on the side.

[0051] In an embodiment of the building jacking method of the present invention:

[0052] In the building jacking method of this embodiment, the setting of the jacking foundation needs to be completed first, specifically, the basic support frame 1 needs to be installed in place first. The support frame base 2 is placed at the bottom of the building to be jacked, the left frame 11 and the right frame 12 of the basic support frame 1 are placed at the bottom of the building and the underpinning structure 7 respectively, the self-climbing jack (i.e., the jack 6 together with the bottom support legs 4 and the top lifting legs 5) is placed in the middle of the left frame 11 and the right frame 12, and the connecting rod 15 is installed on the left frame 11 and the right frame 12, so that the basic support frame 1 is formed. Afterwards, the jack 6 is started, so that the telescopic rod of the jack 6 is extended, the overall size of the self-climbing jack is extended, and the jack 6 lifts the replacement structure 7 until the jack 6 is extended to a preset height. At this time, the supporting legs 4 are supported on the lower side walls of the supporting holes 13, and the lifting legs 5 are contracted under the action of the upper side walls of the supporting holes 13, and can move upward over the supporting holes 13. At this time, the lifting legs 5 pass over the basic support frame 1, so that the basic support frame 1 and the replacement structure 7 maintain a large distance.

[0053] After completing one jacking, first install the additional support frame 3 on the basic support frame 1. Since the jack 6 has lifted the replacement structure 7 to a certain height, there is space for installing the additional support frame 3. The left U-shaped frame 31 and the right U-shaped frame 32 of the additional support frame 3 are respectively arranged on both sides of the telescopic rod of the jack 6, and the support leg 4 is accommodated in the support hole 13 of the additional support frame 3. Then the U-shaped frames on both sides are spliced ​​together, and the support leg 4 is restricted in the support hole 13 of the additional support frame 3. Then the telescopic rod of the jack 6 is controlled to be retracted. At this time, the lifting leg 5 cooperates with the lower side wall stopper of the support hole 13, and the support leg 4 can be retracted under the limit of the upper side wall of the support hole 13 and move upward across the support hole 13. That is, in the process of the jack 6 extending to retracting, the lifting leg 5 is first raised, and then the support leg 4 is raised, so that the self-climbing jack can always keep moving upward during the telescopic movement.

[0054] Finally, when the preset height is reached, the top cover plate 35 is installed on the topmost additional support frame 3 to cover the top groove. After that, the jack 6 needs to be removed, the support frame is made into a permanent support, and the pins on the support legs 4 and the climbing legs are pulled out. At this time, the support legs 4 and the lifting legs 5 are separated from the jack 6 and can be taken out from the support hole 13 separately. Finally, the jack 6 is taken out from the support hole 13 to facilitate other operations such as pouring.

[0055] It is worth noting that when the jack 6 completes the lifting, the height of the supported replacement structure 7 is greater than the upper surface of the additional support frame 3, and at this time, the lifting leg 5 maintains a distance from the lower surface of the support hole 13. When the installation of the additional support frame 3 is completed, the additional support frame 3 is not subjected to force, and then the jack 6 shrinks. At this time, since the lifting leg 5 is not in contact with the support hole 13, the top of the telescopic rod of the jack 6 will drop until the support leg 4 abuts against the lower side wall of the support hole 13. That is, as the jack 6 is extended, the height of the replacement structure 7 increases. During the descent of the jack 6, the replacement structure 7 will first drop with the jack 6, and then the height will remain unchanged. Through such a setting, the installation of the additional support frame 3 is convenient.

[0056] It should be clear that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A building lifting device, characterized in that: The invention comprises a basic support frame for being arranged below the supporting structure, an additional support frame for being installed above the basic support frame and a jack. The basic support frame and the additional support frame are separately arranged. A support leg is arranged at the bottom of the jack. Both the basic support frame and the additional support frame are provided with support holes for accommodating the support legs, which are located on both sides of the jack and are arranged at intervals up and down. The support holes on both sides are arranged symmetrically. The support legs have two groups and are respectively hingedly arranged on both sides of the jack. The support legs have a contracted state in which they contact the upper side wall of the support hole and relatively contract so that the support legs can cross support holes of different heights during the rotation stroke relative to the jack, and an expanded state in which they are expanded so that the support legs can enter the support hole and cooperate with the lower side wall stopper of the support hole. The upper surface of the support leg has a first guide surface for contacting the upper side wall of the support hole.

2. The construction lifting equipment according to claim 1, characterized in that: A hinge shaft is arranged at the bottom of the jack, the support legs are hingedly arranged on the hinge shaft, and at least one group of support legs is provided with a limiting structure for abutting against another group of support legs when the contracted state is converted into the expanded state.

3. The construction lifting equipment according to claim 2, characterized in that: One group of the supporting legs has a groove, and the other group of the supporting legs is provided with a protrusion matched with the groove, and the protrusion constitutes the limiting structure, and the limiting structure is located above the hinge shaft.

4. The construction lifting equipment according to any one of claims 1 to 3, characterized in that: The building jacking equipment also includes a lifting leg located above the jack. The lifting legs have two groups and are hingedly arranged on both sides of the jack. The lifting legs have a contracted state in which they contact the upper side wall of the support hole and relatively contract to allow the lifting legs to cross support holes of different heights during the rotation stroke relative to the jack, and an expanded state in which the lifting legs are expanded to allow the lifting legs to enter the support hole and cooperate with the lower side wall stop of the support hole. The upper surface of the lifting leg has a second guide surface for contacting the upper side wall of the support hole.

5. The construction lifting equipment according to claim 4, characterized in that: A mounting plate is respectively arranged between the jack and the supporting leg and between the jack and the lifting leg.

6. The building lifting equipment according to any one of claims 1 to 3, characterized in that: The basic support frame is provided with a plurality of groups of horizontally arranged rollers, and the upper side wall and the lower side wall of the support hole are both composed of the rollers.

7. The construction lifting equipment according to claim 6, characterized in that: When the supporting legs are in the unfolded state, the first guide surface is an inclined surface extending obliquely downward from the center to the edge, and the edge of the first guide surface has an arc transition.

8. The construction lifting equipment according to any one of claims 1 to 3, characterized in that: The basic support frame comprises a left frame and a right frame which are separately arranged, the jack is arranged between the left frame and the right frame, and a connecting rod is also connected between the left frame and the right frame.

9. The construction lifting equipment according to claim 8, characterized in that: The building jacking equipment also includes a support frame base for being arranged at the bottom of the basic support frame, and an indicating structure for indicating the positions of the left side frame and the right side frame is arranged on the support frame base.

10. A building jacking method, characterized in that: Using the building jacking equipment as described in any one of claims 1 to 9, before jacking, the basic support frame is set at the bottom of the underpinning structure and the jack is installed in the basic support frame together with the supporting legs. After the jack completes one jacking and jacks the underpinning structure to a certain distance from the supporting surface of the basic support frame, the additional support frame is installed on the top of the basic support frame, and the top of the jack is limited on the additional support frame. Thereafter, the jack is controlled to retract so that the jack drives the supporting legs to rise and adapt to the support holes of the corresponding height. The jacking and installation of the additional support frame are repeated until the preset height is reached.

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