CN215055651U

CN215055651U - Novel whole jacking of factory building device

Info

Publication number: CN215055651U
Application number: CN202120879410.3U
Authority: CN
Inventors: 姬生振
Original assignee: Qingdao Zhensheng Construction Engineering Co ltd
Current assignee: Qingdao Zhensheng Construction Engineering Co ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2021-12-07
Anticipated expiration: 2031-04-27

Abstract

The utility model relates to the technical field of factory building construction, in particular to a novel factory building integral jacking device; the jacking device comprises a plurality of sets of jacking assemblies, each set of jacking assembly sequentially comprises an external base support, a middle transmission support and an internal support frame from outside to inside, and further comprises a power unit; the power unit pulls the middle transmission bracket to drive the inner supporting frame to jack up the roof to a preset height; the utility model provides a novel whole jacking of factory building device simple structure, convenient operation.

Description

Novel whole jacking of factory building device

Technical Field

The utility model relates to a factory building construction technical field especially relates to a novel whole jacking of factory building device.

Background

The steel structure factory building generally all includes a whole roof and a plurality of steel construction stand, and a plurality of steel construction stand support whole roof jointly. When higher equipment needs to be additionally installed in the existing plant, the roof is generally required to be integrally lifted.

In the prior art, the whole jacking method of the steel structure factory building is various, for example, a plurality of jacks are directly used for jacking the whole roof integrally; or the whole roof is directly pulled up by external equipment, and the like. These methods require auxiliary equipment and equipment, and cannot ensure the stability and safety of the jacking operation during the jacking of the roof.

The Chinese patent ZL201910943143.9 provides an integral jacking method for a large-span net rack and a limiting and anti-tipping device thereof. The device comprises a measure support, a jacking support, a guide rail, a hydraulic jack, a limiting overturn-preventing support and a stirrup; the top end of the measure support is connected with the net rack, the bottom end of the measure support is fixed on the jacking support, the plurality of jacking supports are sequentially connected end to end from top to bottom, the bottom of the hydraulic jack is fixed on the concrete foundation, the top of the hydraulic jack is fixed at the bottom of the measure support, the stirrup is placed on the concrete foundation, and the stirrup is positioned below the jacking supports; the guide rail is a vertical guide rail, one end of the limiting anti-overturning bracket is connected with the net rack, and the other end of the limiting anti-overturning bracket is abutted against the guide rail; the measure bracket is an umbrella-shaped bracket; flanges are arranged at the top and the bottom of each jacking support, and the plurality of jacking supports are connected through the flanges; the guide rail is a rectangular upright post; the limiting overturn-preventing support is a T-shaped support and comprises a steel pipe limiting clamp and a steel pipe supporting rod, and the steel pipe supporting rod is vertically and fixedly connected to the steel pipe limiting clamp; the middle bearing plate is transversely and fixedly connected between the two jacking supports; the lifting device also comprises a steel wire rope, wherein one end of the steel wire rope is fixed on the net rack, and the other end of the steel wire rope is fixed on the lifting support; the limiting overturn-preventing bracket is obliquely supported on the guide rail downwards, and the oblique downward angle is 20-30 degrees; the method is characterized by comprising the following steps: step one, jacking preparation: reinforcing the column head of the steel column of the net rack through a steel pipe; step two, installing a jacking device: 1) the guide rail is arranged: the plant structure column is used as a vertical guide rail in the process of jacking the integral structure of the net rack, so that the integral net rack vertically moves and jacks along the plant structure column; 2) installing a limiting overturn-preventing bracket; welding one end of the limiting overturn-preventing bracket on the net rack, and obliquely supporting the other end of the limiting overturn-preventing bracket on the side surface of the guide rail downwards, wherein the oblique downward angle is 20-30 degrees; horizontal force and displacement generated due to uneven stress of the jacking device are transmitted and limited through the inclined support rod pieces of the limiting overturn-preventing support in the integral jacking process of the net rack; 3) placing a stirrup on a concrete foundation, fixing the bottom of a hydraulic jack on the concrete foundation, fixedly connecting the top of the hydraulic jack to the bottom of a measure support, placing the bottom of the jacking support on the stirrup, fixedly connecting the top of the jacking support to the bottom of the measure support, and welding the top of the measure support on a net rack; step three, pre-topping: 1) releasing all connections between the net rack and the ground; 2) when the jacking is started, the speed must be controlled, the net rack support is observed, and the normal jacking is started until the support is actually separated from the ground by more than 30 cm; 3) when the net rack support leaves 50mm of the ground, the net rack support should be suspended for 30 minutes, the net rack is checked, and the checking content comprises: whether the jacking support at the lower part is normal or not, whether the jacking support is seriously deviated or not, whether the net rack rod piece is bent or not, and whether the net rack support is basically equal to the ground or not; 4) starting trial jacking, wherein the jacking height in each trial jacking stage is not more than 500 mm; 5) in the top test stage, recording the pressure of an oil pump of the hydraulic jack, calculating the support reaction force of each supporting point according to the data, and comparing the data with the designed support reaction force of the net rack; if the numerical values of the two are consistent, the net rack is proved to be correct in checking; step four, jacking: 1) after the pre-jacking is finished, the hydraulic jack jacks upwards gradually; 2) the hydraulic jack moves upwards, a next section of jacking support is erected at the lower part of the jack, and a section steel stirrup is used for flattening and firmly cushioning the bottom of the support; 3) the jack mandril is dropped to the bottom, the bearing plate arranged in the middle of the jacking bracket is added and firmly anchored by a rivet, the jack is back-adjusted to jack the bearing plate bottom plate, and the readjustment is synchronous; 4) the jack continues to move for a stroke, the jacking supports are sequentially added until the jacking height in the scheme is preset, and steel wire ropes are sequentially added at the pre-jacking positions on two sides of each jacking support in the jacking process; step five, sealing the structural edge in place: 1) after the net rack is jacked to the designed height, the connection welding with the peripheral net rack is carried out; checking the stress state of the guy rope and the bracket; after the net rack meets the in-place condition, the temporary support bracket is matched, and the net rack is lowered to fall on the supporting column; 2) firstly, mounting, welding and fixing a support, and then mounting a steel pipe; 3) measuring the deflection and the geometric dimension of the net rack after the net rack is in place, and recording and evaluating; 4) after all the work is done, the height of the hydraulic jack support is adjusted to slowly fall back to the in-position height, the support stops falling back after the support and the net rack are uniformly stressed, the in-position height and the deviation are rechecked, the net rack in-position node is welded with the support after the design requirements are met, and the hydraulic jack support is finally unloaded after the welding is finished; step six: dismantling the bracket: and (4) after the net rack is in place, dismantling the jacking bracket.

The defects of the above patent technology are that: 1. the jacking device structurally comprises a measure support, a jacking support, a guide rail, a hydraulic jack, a limiting anti-overturning support, a stirrup and the like, and the components are complex; 2. complicated operations such as guide rail arrangement and the like are required to be carried out on site by the jacking device, and the field installation steps are more; 3. jacking operation is complex, and each time the jack moves for one stroke, jacking supports need to be additionally arranged in sequence until the jacking height in the scheme is preset.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims to provide a simple structure, convenient operation's whole jacking device of novel factory building.

In order to achieve the above purpose, the technical scheme of the utility model is that: a novel overall jacking device for a factory building comprises a plurality of sets of jacking assemblies, wherein each set of jacking assembly sequentially comprises an external basic support, a middle transmission support and an internal support frame from outside to inside and further comprises a power unit; the power unit pulls the middle transmission bracket, and then drives the inner supporting frame to jack up the roof to a preset height.

The optimized foundation support comprises a fixed side and a jacking side, wherein the fixed side of the external foundation support is provided with a first channel, and the jacking side of the external foundation support is provided with a second channel; the fixed side of the middle transmission bracket is provided with a third channel, and the jacking side is provided with a fourth channel.

Optimally, a vertical lower fixing plate is arranged on the fixing side of the external basic bracket, and a through hole is formed in the lower fixing plate; set up vertical upper portion fixed plate in the fixed side of inside support frame, set up the through-hole on the fixed plate of upper portion.

Preferably, the number of the lower fixing plate and the upper fixing plate is 1 or more, and the number of the through holes on the lower fixing plate and the upper fixing plate is 2-4.

Preferably, a first fixing plate and a second fixing structure are arranged on the jacking side of the external base support, and the second fixing structure is positioned at the upper part of the first fixing plate; the lower part of the jacking side of the middle transmission support is provided with a third fixing plate, the upper part of the middle transmission support is provided with a fourth fixing structure, and the lower part of the jacking side of the internal support frame is provided with a fifth fixing plate.

The optimized structure comprises a connecting chain, the connecting chain bypasses the fourth fixing structure, and two ends of the connecting chain are fixed on the second fixing structure and the fifth fixing plate respectively.

Preferably, the second fixing structure comprises two second fixing plates which are arranged oppositely and a second fixing column which is fixedly connected with the middle of the second fixing plate; the fourth fixing structure comprises two fourth fixing plates which are oppositely arranged and a pulley which is fixedly connected with the middle of the fourth fixing plates; a pull hole is formed in the fifth fixing plate; the connecting chain bypasses the pulley, and two ends of the connecting chain are respectively fixed on the pull hole and the second fixing column.

Preferably, the fourth fixing structure is higher than the top end of the external basic bracket; the height of the third fixing plate and the fifth fixing plate is limited by the fact that the middle transmission support and the inner support frame can be sequentially and smoothly sleeved into the outer basic support and smoothly ascend.

Optimally, a connecting plate which passes through the first channel and the third channel is arranged between the upper fixing plate and the inner supporting frame; the third fixing plate penetrates through the second channel; the fifth fixing plate penetrates through the second channel and the fourth channel; the fifth fixing plate is positioned above the third fixing plate.

Preferably, the power unit adopts a loop chain electric hoist, the loop chain electric hoist is arranged on the second fixing structure, and the tail end of a hoisting chain of the loop chain electric hoist is fixed on the third fixing plate.

The utility model provides a novel method of whole jacking of factory building device jacking steel construction factory building does:

a first step of fixing: punching holes on a plant steel structure upright column to be jacked, wherein the positions of the holes correspond to the positions of through holes on a lower fixing plate and an upper fixing plate; and (4) passing high-strength bolts through the corresponding holes to fix the steel structure upright post, the upper fixing plate and the lower fixing plate. Therefore, the lower part of the steel structure upright post is fixed with the external basic bracket, and the upper part of the steel structure upright post is fixed with the internal supporting bracket.

The second step is to separate the upright posts: cutting off the upper part and the lower part of the steel structure upright post; so that the upper part of the steel structure upright post can ascend together with the internal supporting frame and realize the jacking of the roof.

The third step of jacking: the electric chain hoist is arranged on the second fixing structure, the tail end of a lifting chain of the electric chain hoist is fixed on the third fixing plate, the electric chain hoist is started, the power unit pulls the middle transmission support, and then the inner support is driven to jack up the roof to a preset height.

Step four, column installation: and a column is additionally arranged between the upper part and the lower part of the steel structure column of the factory building.

The fifth step of disassembly: and dismantling the high-strength bolts for connecting and fixing the lower part of the steel structure stand column and the external foundation support, and dismantling the high-strength bolts for connecting and fixing the upper part of the steel structure stand column and the internal support frame. And starting the loop chain electric hoist, resetting the middle transmission bracket and the inner support bracket, and sleeving the middle transmission bracket and the inner support bracket into the outer basic bracket again.

The fixed side and the jacking side can be arranged on opposite sides, so that an operation space can be provided for the fixing step and the jacking step, and balance and stability of the jacking device are facilitated.

The utility model discloses the vertical setting of well upper portion fixed plate and lower part fixed plate indicates: when the outer base support and the inner support frame are in the working state, the upper fixing plate and the lower fixing plate are vertical, namely, are arranged in parallel with the height direction of the outer base support and the inner support frame.

The outer basic support and the middle transmission support are respectively formed by welding two pieces of H-shaped steel, so that a cavity capable of accommodating the inner layer support is formed in the outer basic support and the middle transmission support. The first fixing plate on the external basic support is located in the middle of the external basic support, a U-shaped structure is adopted, the middle of the external basic support is welded by the first fixing plate, and the effect of reinforcing and fixing the whole structure of the external basic support is achieved.

A hole drawing structure is adopted on the fifth fixing plate, so that the inner supporting frame can be smoothly drawn and lifted; the second fixing structure and the fourth fixing structure adopt the structures of the second fixing column and the pulley, so that the length of a connecting chain between the second fixing column and the pulley can be continuously adjusted in the jacking step, and meanwhile, the inner supporting frame is pulled to ascend.

The heights of the third fixing plate and the fifth fixing plate are limited by the fact that the middle transmission support and the inner support frame can be smoothly sleeved into the outer basic support frame and smoothly ascends, that is, the highest height of the third connecting plate and the fifth connecting plate, which is higher than the jacking side, is lower than the height of the jacking side of the outer support frame, and the third connecting plate and the fifth connecting plate are positioned inside the first fixing plate and the second fixing structure during sleeving and ascending; meanwhile, the highest height of the fifth fixing plate, which is higher than the jacking side, is lower than the height of the jacking side of the middle transmission support, and the fifth fixing plate is positioned inside the fourth fixing structure during sleeving and lifting; the outer basic support can be smoothly sleeved with the middle transmission support, the inner support is smoothly sleeved with the inner support, and the middle transmission support and the inner support smoothly ascend in the outer basic support.

The fifth fixing plate is positioned above the third fixing plate. Because the heights of the external basic support, the middle transmission support and the internal support are basically consistent, the top end of the internal support is higher than that of the middle transmission support after the external basic support, the middle transmission support and the internal support are sleeved.

In the jacking step, the third fixing plate fixed on the middle transmission bracket is used for driving the tail end of the lifting chain to be directly pulled by the electric chain hoist, and the third fixing plate penetrates through the second channel, so that the outer basic bracket is kept still in the whole pulling process, and the outer basic bracket is fixedly connected with the lower part of the steel structure upright post, and the foundation stabilizing effect is achieved; the electric chain hoist is also fixed on the second fixed knot who is located outside basic support constructs, therefore outside basic support's fixed with stable, also plays the effect that reinforcing jacking step stability.

The connecting chain bypasses the fourth fixing structure, and two ends of the connecting chain are respectively fixed on the second fixing structure and the fifth fixing plate; before jacking begins, the fourth fixing structure is higher than the top end of the outer foundation support, so that the fourth fixing structure is higher than the second fixing structure. Along with the upward movement of the middle transmission bracket, the distance between the fourth fixing structure and the second fixing structure is increased, and the length of the connecting chain is fixed, so that the fifth fixing plate pulls the inner support frame to ascend not synchronously along with the middle transmission bracket but to accelerate. Namely, in the jacking step, the rising speed and the height of the inner supporting frame exceed those of the middle transmission bracket. Specifically, the method comprises the following steps: every time the third fixed plate fixed on the middle transmission support is pulled to rise by 10cm by the electric chain hoist, the middle transmission support is pulled to rise by 10cm at the same time, meanwhile, the distance between the fourth fixed structure and the second fixed structure is increased by 10cm, because the length of the connecting chain is fixed, the distance between the fourth fixed structure and the fifth fixed plate is required to be reduced by 10cm, therefore, the fifth fixed plate is pulled to rise by 10cm more when rising along with the fourth fixed structure, the fifth fixed plate rises by 20cm, namely, the inner support frame rises by 20 cm.

In the jacking step, the third fixed plate moves upwards along the second channel, and the second channel plays a role in providing a track for the middle transmission support to move upwards, so that the stability of the middle transmission support to move upwards is ensured. The fifth fixing plate penetrates through a second channel located on the outer basic support and a fourth channel located on the middle transmission support, so that the fifth fixing plate moves upwards in the second channel and the fourth channel, the second channel and the fourth channel play a role in providing a track for the inner support frame to move upwards, and the moving stability of the inner support frame is guaranteed. The connecting plate penetrating through the first channel and the third channel is arranged between the upper fixing plate and the inner supporting frame, so that in the process that the middle transmission frame and the inner supporting frame move upwards, the connecting plates of the upper fixing plate and the lower fixing plate cannot obstruct the ascending, the connecting plate of the upper fixing plate can move upwards in the first channel and the third channel, the first channel and the third channel play a role of providing a track for the inner supporting frame to move upwards, and the moving stability of the inner supporting frame is ensured.

In the jacking step, middle part transmission support rises gradually, the speed and the height that inside support frame rises are bigger, the highest height that inside support frame can rise is that the third fixed plate is close the second fixed knot structure (because the chain electric block occupies certain space, consequently the third fixed plate is less than second fixed knot structure take the altitude), when the fifth fixed plate is close the fourth fixed knot structure, the lower part of middle part transmission support rises to the upper portion of outside basic support frame this moment, the lower part of inside support frame rises to the upper portion of middle part transmission support frame, the height on inside support frame top is exactly the height that the roof was jacked up, therefore the highest height that the roof can be jacked up is correlated with the sum of the height of middle part transmission support frame and inside support frame.

The height of the whole jacking device is generally set to be 3-4 m, so that a plurality of sets of jacking assemblies are operated simultaneously, and the operation of integrally jacking a steel structure factory building with a fixed length, a wide width and a high height can be realized very conveniently. The number of jacking assemblies is related to the number of steel structure columns of a factory building, and the jacking assemblies generally correspond to the steel structure columns of the factory building one by one.

The beneficial effects of the utility model reside in that:

1. the utility model provides a novel whole jacking of factory building device simple structure, convenient operation. Specifically, the jacking assembly of the utility model structurally comprises an external basic support, a middle transmission support and an internal support frame which are sleeved from outside to inside, and also comprises a fixed plate, a connecting plate and other parts, thus having simple structure; in operation, the lifting device can be taken and used at any time, field installation is not needed, only basic steps of fixing, separating the stand column, jacking, installing the stand column additionally, disassembling and the like are needed, and the operation is convenient.

2. Further, the utility model provides a novel whole jacking of factory building device can be stable, quick with roof jack-up in the function. One of which compares with the direct working method with factory building jack-up with jack among the prior art, the utility model discloses at first fixed with inside support piece with the upper portion of steel construction stand, then carry out the jacking operation again, with the upper portion of steel construction stand and roof jacking together, can keep the balance and the stability of the structure of roof more, improved the security of jacking operation. Secondly, compared with the working mode of only using two layers of jacking components, the utility model adopts the mode that the middle transmission support is sleeved with the inner support frame and the inner support frame is fixedly connected with the outer basic support frame through a connecting chain with a fixed length, thereby realizing the continuous rising of the middle transmission support and the continuous, accelerated and rising of the inner support frame, wherein tracks are arranged in the rising process, and the rising operation is stable; and the inner supporting frame is used as a structure for directly jacking the roof, the lifting speed, the stability and the height which can be reached all exceed the working modes of two layers of components, and the working efficiency is high. Because the jacking device of two-layer assembly structure, the highest height on jacking roof is the height on middle part one deck top only, the utility model discloses the height on jacking roof is the height on inlayer top.

3. The utility model discloses a steel construction stand and jacking device are fixed to the mode that high strength bolt ran through the through-hole, and is easy and simple to handle, and steel construction stand and jacking device can not receive destruction, can use repeatedly.

Drawings

Fig. 1 is an overall schematic view of a novel plant overall jacking device provided by the utility model;

fig. 2 is a schematic perspective view of the jacking side of the external foundation support provided by the present invention;

fig. 3 is a schematic view of the external base bracket fixing side of the present invention;

fig. 4 is a fixed side view of the middle transmission bracket provided by the present invention;

fig. 5 is a schematic perspective view of a middle transmission bracket provided by the present invention;

fig. 6 is a schematic view of the jacking side of the internal support frame provided by the present invention;

fig. 7 is a schematic view of the fixed side of the internal support frame provided by the present invention;

fig. 8 is an enlarged view of a fourth fixing structure provided by the present invention.

1. An outer base support; 2. a middle transmission bracket; 3. an inner support frame; 4. connecting a chain; 5. a fixed side; 6. jacking the side; 7. a first channel; 8. a second channel; 9. a third channel; 10. a fourth channel; 11. a pulley; 12. a connecting plate; 13. a lower fixing plate; 14. an upper fixing plate; 15. a first fixing plate; 16. a second fixed structure; 17. a third fixing plate; 18. a fourth fixed structure; 19. a fifth fixing plate; 20. a second fixing plate; 21. a second fixed column; 22. a fourth fixing plate; a: a fourth fixed structure amplification portion.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

The technical scheme of the embodiment is as follows: a novel overall jacking device for a factory building comprises a plurality of sets of jacking assemblies, wherein each set of jacking assembly sequentially comprises an external basic support, a middle transmission support and an internal support frame from outside to inside and further comprises a power unit; the power unit pulls the middle transmission bracket, and then drives the inner supporting frame to jack up the roof to a preset height.

The device comprises an external foundation support, a fixed side, a jacking side and a lifting side, wherein the fixed side of the external foundation support is provided with a first channel, and the jacking side is provided with a second channel; the fixed side of the middle transmission bracket is provided with a third channel, and the jacking side is provided with a fourth channel.

Wherein, a vertical lower fixing plate is arranged at the fixing side of the external basic bracket, and a through hole is arranged on the lower fixing plate; set up vertical upper portion fixed plate in the fixed side of inside support frame, set up the through-hole on the fixed plate of upper portion.

Wherein, the quantity of lower part fixed plate and upper portion fixed plate is 1 or more respectively, and the quantity of through-hole on lower part fixed plate and the upper portion fixed plate is 2-4.

The first fixing plate and the second fixing structure are arranged on the jacking side of the external base support, and the second fixing structure is positioned at the upper part of the first fixing plate; the lower part of the jacking side of the middle transmission support is provided with a third fixing plate, the upper part of the middle transmission support is provided with a fourth fixing structure, and the lower part of the jacking side of the internal support frame is provided with a fifth fixing plate.

The connecting structure comprises a first fixing structure and a second fixing structure, wherein the connecting structure comprises a first fixing plate and a second fixing plate, the first fixing structure comprises a first fixing structure, the second fixing structure comprises a second fixing structure, the first fixing structure comprises a first fixing plate and a second fixing plate, the first fixing structure comprises a fourth fixing structure, the second fixing structure comprises a fourth fixing structure, the fourth fixing structure comprises a fourth fixing structure, and two ends of the connecting chain are fixed on the second fixing structure and the fifth fixing plate respectively.

The second fixing structure comprises two second fixing plates which are oppositely arranged and a second fixing column which is fixedly connected with the middle of the second fixing plate; the fourth fixing structure comprises two fourth fixing plates which are oppositely arranged and a pulley which is fixedly connected with the middle of the fourth fixing plates; a pull hole is formed in the fifth fixing plate; the connecting chain bypasses the pulley, and two ends of the connecting chain are respectively fixed on the pull hole and the second fixing column.

The fourth fixing structure is higher than the top end of the external basic bracket; the height of the third fixing plate and the fifth fixing plate is limited by the fact that the middle transmission support and the inner support frame can be sequentially and smoothly sleeved into the outer basic support and smoothly ascend.

Wherein, a connecting plate which passes through the first channel and the third channel is arranged between the upper fixing plate and the inner supporting frame; the third fixing plate penetrates through the second channel; the fifth fixing plate penetrates through the second channel and the fourth channel; the fifth fixing plate is positioned above the third fixing plate.

The power unit adopts a loop chain electric hoist, the loop chain electric hoist is arranged on the second fixing structure, and the tail end of a hoisting chain of the loop chain electric hoist is fixed on the third fixing plate.

Specifically, the number of the lower fixing plate and the upper fixing plate is 2 respectively, and the number of the through holes on the lower fixing plate and the upper fixing plate is 2 or 4. The heights of the external basic support, the middle transmission support and the internal support frame are 2-4 meters, and the length of the connecting chain is 2-4 meters. The second fixed knot constructs and is located outside basic support upper portion and be close the top, and the third fixed plate is located the bottom of middle part transmission support, and the fourth fixed knot constructs and is located the upper portion of middle part transmission support and be close the top, and the lower part that the fifth fixed plate is located inside support frame is close the bottom.

The length of the jacking steel structure factory building is 10-20 meters, the width of the jacking steel structure factory building is 10-20 meters, the original height is 4-5 meters, 15-40 steel structure upright posts are arranged, 15-40 sets of jacking devices formed by the jacking components provided by the utility model are used for simultaneous operation, and the jacking of 2-6 meters at most can be conveniently realized.

Claims

1. The utility model provides a novel whole jacking of factory building device which characterized in that: the jacking device comprises a plurality of sets of jacking assemblies, each set of jacking assembly sequentially comprises an external base support, a middle transmission support and an internal support frame from outside to inside, and further comprises a power unit; the power unit pulls the middle transmission bracket, and then drives the inner supporting frame to jack up the roof to a preset height.

2. The novel jacking device for the whole plant according to claim 1, is characterized in that: the device comprises a fixed side and a jacking side, wherein the fixed side of an external foundation support is provided with a first channel, and the jacking side is provided with a second channel; the fixed side of the middle transmission bracket is provided with a third channel, and the jacking side is provided with a fourth channel.

3. The novel jacking device for the whole plant according to claim 2, is characterized in that: a vertical lower fixing plate is arranged on the fixing side of the external basic bracket, and a through hole is formed in the lower fixing plate; set up vertical upper portion fixed plate in the fixed side of inside support frame, set up the through-hole on the fixed plate of upper portion.

4. The novel jacking device for the whole plant according to claim 3, is characterized in that: the number of the lower fixing plate and the upper fixing plate is respectively 1 or more, and the number of the through holes on the lower fixing plate and the upper fixing plate is 2-4.

5. The novel jacking device for the whole plant according to claim 4, is characterized in that: a first fixing plate and a second fixing structure are arranged on the jacking side of the external base support, and the second fixing structure is positioned at the upper part of the first fixing plate; the lower part of the jacking side of the middle transmission support is provided with a third fixing plate, the upper part of the middle transmission support is provided with a fourth fixing structure, and the lower part of the jacking side of the internal support frame is provided with a fifth fixing plate.

6. The novel jacking device for the whole plant according to claim 5, is characterized in that: the connecting chain is wound around the fourth fixing structure, and two ends of the connecting chain are fixed on the second fixing structure and the fifth fixing plate respectively.

7. The novel jacking device for the whole plant according to claim 6, is characterized in that: the second fixing structure comprises two second fixing plates which are oppositely arranged and a second fixing column which is fixedly connected with the middle of the second fixing plate; the fourth fixing structure comprises two fourth fixing plates which are oppositely arranged and a pulley which is fixedly connected with the middle of the fourth fixing plates; a pull hole is formed in the fifth fixing plate; the connecting chain bypasses the pulley, and two ends of the connecting chain are respectively fixed on the pull hole and the second fixing column.

8. The novel jacking device for the whole plant according to claim 7, is characterized in that: the fourth fixing structure is higher than the top end of the external basic bracket; the height of the third fixing plate and the fifth fixing plate is limited by the fact that the middle transmission support and the inner support frame can be sequentially and smoothly sleeved into the outer basic support and smoothly ascend.

9. The novel jacking device for the whole plant according to claim 8, is characterized in that: a connecting plate which passes through the first channel and the third channel is arranged between the upper fixing plate and the inner supporting frame; the third fixing plate penetrates through the second channel; the fifth fixing plate penetrates through the second channel and the fourth channel; the fifth fixing plate is positioned above the third fixing plate.

10. The novel integral jacking device for the factory building, as claimed in any one of claims 1 to 9, is characterized in that: the power unit adopts a loop chain electric hoist, the loop chain electric hoist is arranged on the second fixing structure, and the tail end of a hoisting chain of the loop chain electric hoist is fixed on the third fixing plate.