A multifunctional tower crane foundation conversion, installation and leveling device

Abstract

This invention relates to the field of tower crane technology, specifically to a multifunctional tower crane foundation conversion, installation, and leveling device. It includes: a connecting frame with a support plate on it; two first sliding frames and two second sliding frames slidably connected within the connecting frame; four fixing units located at the intersections of the two first and two second sliding frames; each fixing unit includes: a connecting frame, a support frame, two connecting blocks, and two fine-tuning mechanisms; the connecting frame is installed at the intersection of the first sliding frame and the adjacent second sliding frame; the support frame is slidably connected to the support plate; and the two connecting blocks are both slidably connected to the support frame. This invention, through the relative movement of the connecting blocks and the support frame, fine-tunes the relative position of the connecting frame and the support frame, ensuring that the center of gravity of the tower crane is located at the center of the support plate, guaranteeing the uniformity of stress on the structure of the connecting frame, and improving the safety of the tower crane and personnel.

Description

Technical Field

[0001] This invention relates to the field of tower crane technology, and more specifically to a multifunctional tower crane foundation conversion, installation, and leveling device. Background Technology

[0002] The tower crane foundation transition section is a key component ensuring the safe and stable operation of the tower crane. Its function is to firmly fix the tower crane's foundation section to a large-volume concrete foundation. Because the tower crane needs to ensure its center of gravity is stable and the force is evenly distributed during installation, the tower crane foundation generally uses a large-volume concrete foundation, with anchor bolts or steel plates pre-embedded in the concrete, and then the foundation section is connected. However, in some cases with long construction cycles and involving the conversion of different specifications of tower cranes, in order to accommodate the installation needs of various specifications of tower cranes, transition sections are usually added to the concrete to connect the fixed legs on the transition section to the foundation section. Different specifications of tower cranes require different sizes of foundation transition sections. Existing tower crane installation usually uses a tower crane foundation transition installation leveling device. After the positions of the four fixed legs on this device are adjusted, it can be used for different specifications of tower cranes.

[0003] However, after the position of the fixed legs on the existing tower crane foundation conversion and installation leveling device is adjusted, it is usually impossible to ensure that the center of gravity of the tower crane is centered on the tower crane foundation conversion and installation leveling device. This results in a significant increase in the load difference between different parts of the tower crane foundation conversion device, and some parts will bear excessive stress, thereby accelerating structural fatigue and increasing the risk of tower crane tilting or overturning. Summary of the Invention

[0004] To address the problem that the center of gravity cannot be guaranteed to be centered after the position of the fixed legs on the tower crane foundation conversion and installation leveling device is adjusted, this invention provides a multifunctional tower crane foundation conversion and installation leveling device.

[0005] The technical implementation scheme of the present invention is as follows: a multifunctional tower crane foundation conversion, installation, and leveling device, comprising: a connecting frame, on which a support plate is provided, and two first sliding frames and two second sliding frames are slidably connected within the connecting frame; four fixing units, respectively located at the intersection points of the two first sliding frames and the two second sliding frames; each fixing unit includes: a connecting frame, a support frame, two connecting blocks, and two fine-tuning mechanisms; the connecting frame is installed at the intersection point of the first sliding frame and the adjacent second sliding frame; the support frame is slidably connected to the support plate, and a tension spring is fixed between the support frame and the connecting frame; the two connecting blocks are slidably connected to the support frame, and the connecting blocks are used to compress the connecting frame; the fine-tuning mechanisms are disposed on the connecting frame and are used to fine-tune the position of the support frame; and a synchronous control mechanism is disposed within the connecting frame and is used to synchronously change the distance between the two first sliding frames and the two second sliding frames.

[0006] As a preferred embodiment of the present invention, a plurality of uniformly distributed cylinders are provided in the connecting frame. The cylinders in the connecting frame contact and support the support plate, thereby dispersing the compressive force of the support frame on the support plate to the connecting frame and preventing the support plate from deforming due to concentrated force.

[0007] As a preferred embodiment of the present invention, the fine-tuning mechanism includes: a first bolt, threadedly connected to the connecting frame, the first bolt being used to press and fix the positions of the support frame and the connecting block; a fixing rod, slidably connected to the connecting block, the fixing rod being fixedly connected to the first bolt; and a self-locking assembly, disposed on the first bolt, for locking the position of the support frame relative to the connecting frame.

[0008] As a preferred embodiment of the present invention, the self-locking assembly includes: a connecting plate, which is rotatably connected to the first bolt; a limiting block, which is slidably connected to the lower part of the connecting plate, a first spring being fixed between the limiting block and the connecting plate, and a recess being provided at the lower part of the connecting block, wherein the limiting block is used to insert into the recess of the connecting block, so that the connecting frame and the support frame are relatively fixed.

[0009] As a preferred embodiment of the present invention, the synchronization control mechanism includes: a fixed column, fixedly connected within the connecting frame; two sliding rings, both slidably connected to the fixed column, the first sliding frame and the second sliding frame both rotatably connected to rotating plates, one sliding ring being rotatably connected to the rotating plates on both first sliding frames, and the other sliding ring being rotatably connected to the rotating plates on both second sliding frames; and an adjustment component, disposed on the connecting frame, for changing and locking the positions of the two sliding rings.

[0010] As a preferred embodiment of the present invention, the fixed column is located at the center of the connecting frame, and the two rotating plates connected to the same sliding ring are distributed in a mirror image. The center of the rectangular frame formed by the first sliding frame and the second sliding frame coincides with the center of the connecting frame, so as to center the center of gravity of the four support frames on the connecting frame, which facilitates the rapid adjustment of the position of the four support frames.

[0011] As a preferred embodiment of the present invention, the adjusting assembly includes: two adjusting bolts, both rotatably connected to the connecting frame; two sliding plates, respectively fixed to the corresponding sliding rings, the sliding plates being threadedly connected to the adjacent adjusting bolts, and the sliding plates sliding relative to the connecting frame to limit their movement, so that the sliding plates and the sliding rings move up and down synchronously.

[0012] As a preferred embodiment of the present invention, it further includes: two limiting mechanisms, each disposed at one end of one of the two first sliding frames, for causing the horizontal offset force on the support frame to act directly on the connecting frame. Each limiting mechanism includes: a sliding frame slidably connected to one end of the first sliding frame, the sliding frame being slidably connected to an adjacent second sliding frame, the sliding frame being located at the intersection of the first and second sliding frames, and locking frames slidably connected to both the first and second sliding frames; two connecting rods, each rotatably connected to the sliding frame, the connecting rods being rotatably connected to an adjacent locking frame, the rotatable connection point between the connecting rod and the locking frame being biased towards the inner wall of the connecting frame, and the locking frame locking the relative position of the first and second sliding frames by deflection; and a locking component disposed on the connecting frame for actively controlling the deflection of the locking frame.

[0013] As a preferred embodiment of the present invention, the inner edge of the locking frame is set as a bevel, and the bevel of the locking frame is used to fit the first sliding frame or the second sliding frame, so that the relative fixed state of the first sliding frame and the second sliding frame is more stable.

[0014] As a preferred embodiment of the present invention, the locking assembly includes: a first telescopic rod fixedly connected to the sliding frame, the first telescopic rod being connected to a liquid guide tube; two second telescopic rods, both fixedly connected to the sliding frame, both second telescopic rods being connected to the liquid guide tube, and a second spring being fixedly connected between the telescopic end of the second telescopic rod and an adjacent locking frame; a second bolt threadedly connected to a corner of the connecting frame, the second bolt being fixedly connected to a third spring between the second bolt and the telescopic end of the first telescopic rod via a rotating block, and hydraulic oil being injected into the first telescopic rod, the liquid guide tube, and the second telescopic rods.

[0015] Compared with the prior art, the present invention has the following advantages: 1. The present invention finely adjusts the relative position of the connecting frame and the support frame by moving the connecting block and the support frame, so that the center of gravity of the tower crane is located at the center of the support plate, ensuring the uniformity of the stress on the structure of the connecting frame and improving the safety of the tower crane and the workers.

[0016] 2. This invention adjusts the relative positions of the first and second sliding frames by moving the two sliding rings up and down in the synchronous control mechanism, thereby quickly changing the relative spacing of the four support frames and ensuring that the center of the four support frames is always located at the center of the support plate, which facilitates subsequent fine-tuning of the center.

[0017] 3. This invention locks the relative positions of the first and second sliding frames by deflecting the locking frame in the limiting mechanism and rotating the sliding frame and the connecting rod, so that the force of the tower crane is distributed on the connecting frame, preventing damage to the adjusting bolts and the threaded adjustment of the sliding plate, and ensuring the safety of the tower crane during operation. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the parts at the connecting frame and support frame of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the parts at the first and second sliding frames of the present invention;

[0021] Figure 4 This is a three-dimensional structural diagram of the parts at the fixed column and sliding ring of the present invention;

[0022] Figure 5 This is a three-dimensional structural diagram of the parts at the support frame and connecting block of the present invention;

[0023] Figure 6 This is a three-dimensional structural diagram of the connecting block and the parts at the first bolt of the present invention;

[0024] Figure 7 This is a three-dimensional structural diagram of the parts at the first bolt and the limiting block of the present invention;

[0025] Figure 8 This is a three-dimensional structural diagram of the parts at the first bolt and fixing rod of the present invention;

[0026] Figure 9 This is a three-dimensional structural diagram of the parts at the sliding frame and locking frame of the present invention;

[0027] Figure 10 This is a three-dimensional structural diagram of the locking frame and the connecting bend rod parts of the present invention;

[0028] Figure 11 This is a three-dimensional structural diagram of the parts at the connecting frame and the second bolt of the present invention.

[0029] The attached figures are labeled as follows: 1-connecting frame, 2-support plate, 3-first sliding frame, 4-second sliding frame, 5-connecting frame, 6-support frame, 7-connecting block, 201-first bolt, 202-fixing rod, 301-connecting plate, 302-limiting block, 401-fixing column, 402-sliding ring, 403-rotating plate, 501-adjusting bolt, 502-sliding plate, 601-sliding frame, 602-locking frame, 603-connecting bent rod, 701-first telescopic rod, 702-liquid guide tube, 703-second telescopic rod, 704-second bolt. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 - Appendix Figure 11 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1: To accommodate tower cranes of different specifications, the position of the fixed legs on the existing tower crane foundation conversion and installation leveling device needs to be adjusted. However, after the position of the fixed legs is changed, it cannot be guaranteed that the center of gravity of the tower crane is centered on the tower crane foundation conversion and installation leveling device. This results in some parts of the tower crane foundation conversion device bearing excessive stress, accelerating structural fatigue, and increasing the risk of the tower crane tilting or overturning.

[0032] A multi-functional tower crane foundation conversion and installation leveling device, please refer to the attached document. Figure 1 - Appendix Figure 8As shown, it includes: a connecting frame 1, on which a support plate 2 is mounted; two first sliding frames 3 and two second sliding frames 4 are slidably connected within the connecting frame 1; four fixing units are located at the intersections of the two first sliding frames 3 and the two second sliding frames 4; each fixing unit includes: a connecting frame 5, a support frame 6, two connecting blocks 7, and two fine-tuning mechanisms; the connecting frame 5 is installed at the intersection of the first sliding frame 3 and the adjacent second sliding frame 4; the support frame 6 is slidably connected to the support plate 2, and a tension spring is fixed between the support frame 6 and the connecting frame 5; the two connecting blocks 7 are both slidably connected to the support frame 6, and the connecting blocks 7 are used to compress the connecting frame 5; the fine-tuning mechanisms are located on the connecting frame 5 and are used to fine-tune the position of the support frame 6; and a synchronization control mechanism is located within the connecting frame 1 and is used to synchronously change the distance between the two first sliding frames 3 and the two second sliding frames 4. Multiple evenly distributed cylinders are arranged within the connecting frame 1. The inner cylinder of the connecting frame 1 contacts and supports the support plate 2, distributing the compressive force of the support frame 6 on the support plate 2 to the connecting frame 1, preventing the support plate 2 from deforming due to concentrated force. The fine-tuning mechanism includes: a first bolt 201, threadedly connected to the connecting frame 5, used to compress and fix the positions of the support frame 6 and the connecting block 7; a fixing rod 202, slidably connected to the connecting block 7, and fixedly connected to the first bolt 201; and a self-locking assembly, disposed on the first bolt 201, used to lock the position of the support frame 6 relative to the connecting frame 5. The self-locking assembly includes: a connecting plate 301, rotatably connected to the first bolt 201; a limiting block 302, slidably connected to the lower part of the connecting plate 301, with a first spring fixed between the limiting block 302 and the connecting plate 301; a recess is provided at the lower part of the connecting block 7, and the limiting block 302 is used to insert into the recess of the connecting block 7, so that the connecting frame 5 and the support frame 6 are relatively fixed.

[0033] The above solution aims to address the problem that after the position of the support frame 6 changes, it is impossible to accurately ensure that the center of gravity of the tower crane is centered on the connecting frame 1, resulting in unbalanced stress on various parts of the connecting frame 1 and threatening the safety of the tower crane. Pressure sensors are installed at four positions where the support plate 2 contacts the connecting frame 1 to monitor the stress at various points on the support plate 2, establish a pressure distribution model, obtain the center of gravity offset data of the tower crane through the pressure distribution model, and establish a correction equation based on the center of gravity offset data to slightly adjust the position of the four support frames 6 so that the center of gravity of the tower crane is centered on the connecting frame 1, suppressing the overturning tendency of the tower crane. The first sliding frame 3 is perpendicular to the adjacent second sliding frame 4. The tension spring between the connecting frame 5 and the support frame 6 is always in a stretched state to drive the support frame 6 to move synchronously when the connecting frame 5 moves. The facing surfaces of the connecting frame 5 and the support frame 6 are always parallel to each other, and there is a right-angle gap between the connecting frame 5 and the support frame 6. The connecting block 7 is a splicing part, and the horizontal cross section of the connecting block 7 is a right-angled trapezoid. According to the position of the contact between the inclined surface of the connecting block 7 and the connecting frame 5, the four support frames 6 are controlled to freely adjust on the horizontal plane.

[0034] With attachment Figure 6 Taking the connecting block 7 on the front side as an example, the inclined surface of the connecting block 7 is inclined from front to back to the left, and the inclined surface of the limiting block 302 is inclined from top to bottom to the left. Initially, the first spring connected to the limiting block 302 is in a compressed state. The elastic coefficient of the tension spring between the connecting frame 5 and the support frame 6 is greater than the elastic coefficient of the first spring connected to the limiting block 302. The lower side of the limiting block 302 is in contact with the surface of the support plate 2. The fixing rod 202 and the connecting block 7 can move back and forth relative to each other. The distance that the fixing rod 202 moves in the connecting block 7 is greater than the distance that the connecting plate 301 and the limiting block 302 move relative to each other. When the first bolt 201 drives the connecting block 7 to move to the right, the limiting block 302 first releases the locking of the connecting block 7. The space where the fixing rod 202 is located in the connecting block 7 is a rectangular cavity. The fixing rod 202 can move freely on the horizontal plane in the rectangular cavity of the connecting block 7.

[0035] Workflow: When operators use this device as a transition section to fix tower crane foundation sections of different specifications, they first connect the lower part of the connecting frame 1 to the steel plate in the concrete with bolts. Then, according to the size of the tower crane foundation section to be installed, the distance between the two first sliding frames 3 and the two second sliding frames 4 is quickly adjusted through the synchronous control mechanism. This causes the first sliding frames 3 and the second sliding frames 4 to move the connecting frame 5 at their intersection. The connecting frame 5, through a tension spring, drives the support frame 6 to quickly complete the position adjustment. Subsequently, based on the data fed back by the four pressure sensors on the support plate 2, the positions of the four support frames 6 are slightly adjusted. If the center of gravity is biased towards the rear, the operator only needs to adjust the positions of the two front connecting blocks 7 and the two rear connecting blocks 7. Figure 6 Taking the connecting block 7 on the front side as an example, the operator rotates the first bolt 201, which drives the connecting plate 301 to move to the right. The first spring connected to the limiting block 302 is relaxed, and then the first bolt 201 drives the limiting block 302 to move out of the groove of the connecting block 7 through the connecting plate 301.

[0036] During the movement of the first bolt 201 to the right, the first bolt 201 drives the connecting block 7 to move to the right via the fixing rod 202. Under the tension of the spring connected to it, the support frame 6 drives the connecting block 7 to move forward. The fixing rod 202 moves backward within the connecting block 7, while simultaneously rotating the two first bolts 201 on the rear side in the opposite direction. The connecting block 7 on the rear side moves into the right-angle gap between the connecting frame 5 and the support frame 6, pushing the two support frames 6 on the rear side forward. The support frames 6 on the rear side stretch the spring connected to them. The limiting block 302 remains within the groove of the connecting block 7. When the first bolt 201 on the rear side stops rotating, the connecting block 7 is locked. This ultimately causes the center of gravity monitored by the pressure sensor at the support plate 2 to shift forward, centered on the connecting frame 1. The two first bolts 201 on the front side rotate in the opposite direction to... Figure 6Taking the connecting block 7 on the front side as an example, the first bolt 201 inserts the limiting block 302 into the groove of the connecting block 7 through the connecting plate 301. As the first bolt 201 rotates, the first spring between the connecting plate 301 and the limiting block 302 is compressed, and the limiting block 302 locks the position of the connecting block 7. At this point, the positions of all parts in this device are fixed, and the operator can install the foundation section on the support frame 6 to install the tower crane.

[0037] For further details, please refer to the appendix. Figure 3 and attached Figure 4 As shown, the synchronization control mechanism includes: a fixed column 401, fixedly connected to the connecting frame 1; two sliding rings 402, both slidably connected to the fixed column 401; a first sliding frame 3 and a second sliding frame 4, both rotatably connected to rotating plates 403; one sliding ring 402 rotatably connected to the rotating plates 403 on both first sliding frames 3, and the other sliding ring 402 rotatably connected to the rotating plates 403 on both second sliding frames 4; and an adjustment component, disposed on the connecting frame 1, used to change and lock the positions of the two sliding rings 402. The fixed column 401 is located at the center of the connecting frame 1. The two rotating plates 403 are mirror images of each other. The center of the rectangular frame formed by the first sliding frame 3 and the second sliding frame 4 coincides with the center of the connecting frame 1. This is used to center the center of gravity of the four support frames 6 on the connecting frame 1, which facilitates the quick adjustment of the position of the four support frames 6. The adjustment component includes: two adjusting bolts 501, both of which are rotatably connected to the connecting frame 1; and two sliding plates 502, which are respectively fixed to the corresponding sliding rings 402. The sliding plates 502 are threadedly connected to the adjacent adjusting bolts 501. The sliding plates 502 and the connecting frame 1 are limited to slide, so that the sliding plates 502 and the sliding rings 402 move up and down synchronously.

[0038] In the above scheme, the aim is to control the two first sliding frames 3 and the two second sliding frames 4 to move closer or further away synchronously, so that the center of the rectangle containing the four support frames 6 is always located at the exact center of the connecting frame 1, thereby reducing the fine-tuning range of the subsequent support frame 6 position and improving the accuracy of the center of gravity positioning of this device; the two rotating plates 403 connected to the sliding ring 402 always remain in an inclined state, which is used to make the two first sliding frames 3 (two second sliding frames 4) move synchronously towards each other or away from each other when the sliding ring 402 moves along the fixed column 401. The two first sliding frames 3 are both located below the two second sliding frames 4. The inclined angle of the thread on the adjusting bolt 501 is an acute angle, which is used to make the adjusting bolt 501 self-lock after adjusting the position of the sliding plate 502, ensuring the stability of the position of the first sliding frame 3 and the second sliding frame 4 after adjustment.

[0039] Workflow: After connecting the connecting frame 1 to the steel plate in the foundation concrete with bolts, if the size of the foundation section to be installed is small, the operator rotates two adjusting bolts 501. The adjusting bolts 501 push the sliding plate 502 downward, and the two sliding rings 402 move downward along the fixed column 401. Both sliding rings 402 reduce the rectangular area formed by the two first sliding frames 3 and the two second sliding frames 4 through the rotating plate 403. The connecting frame 5 moves with the change of the intersection point of the first sliding frame 3 and the second sliding frame 4. When the spacing of the four support frames 6 is the same as the spacing at the connection of the foundation section, stop rotating the two adjusting bolts 501. At this point, the rapid adjustment of the position of the four support frames 6 is completed. Then, based on the center of gravity analysis of the pressure sensing plate at the support plate 2, quickly and selectively rotate the eight first bolts 201 to finely adjust the position of the connecting block 7 on the support frame 6, so that after the tower crane is installed, the center of gravity is centered on the connecting frame 1, ensuring that the structure of the connecting frame 1 is subjected to uniform stress.

[0040] If the tower crane specifications are changed later, the tower crane must be disassembled first, and then the two adjusting bolts 501 are turned to readjust the positions of the four support frames 6. After that, the above-mentioned fine-tuning operation of the center of gravity is repeated, and the tower crane can be reassembled for operation.

[0041] Example 2: Based on Example 1, please refer to the appendix. Figure 5 and attached Figure 9 - Appendix Figure 11As shown, it also includes: two limiting mechanisms, respectively disposed at one end of the two first sliding frames 3, for ensuring that the horizontal offset force on the support frame 6 acts directly on the connecting frame 1. The limiting mechanism includes: a sliding frame 601, slidably connected to one end of the first sliding frame 3, the sliding frame 601 being slidably connected to the adjacent second sliding frame 4, the sliding frame 601 being located at the intersection of the first sliding frame 3 and the second sliding frame 4, and locking frames 602 being slidably connected to both the two first sliding frames 3 and the two second sliding frames 4; two connecting bent rods 603, both rotatably connected to the sliding frame 601, the connecting bent rods 603 being rotatably connected to the adjacent locking frames 602, the rotatable connection point between the connecting bent rods 603 and the locking frames 602 being biased towards the inner wall of the connecting frame 1, and the locking frames 602 locking the relative positions of the first sliding frame 3 and the second sliding frame 4 by deflection; and a locking assembly, disposed on the connecting frame 1, for actively locking the relative positions of the first sliding frame 3 and the second sliding frame 4. The locking frame 602 is deflected. The inner edge of the locking frame 602 is set as a slope. The slope of the locking frame 602 is used to fit the first sliding frame 3 or the second sliding frame 4, so that the relative fixed state of the first sliding frame 3 and the second sliding frame 4 is more stable. The locking assembly includes: a first telescopic rod 701, which is fixed to the sliding frame 601 and is connected to a liquid guide tube 702; two second telescopic rods 703, which are both fixed to the sliding frame 601 and are connected to the liquid guide tube 702. A second spring is fixed between the telescopic end of the second telescopic rod 703 and the adjacent locking frame 602; a second bolt 704, which is threaded to a corner of the connecting frame 1. A third spring is fixed between the second bolt 704 and the telescopic end of the first telescopic rod 701 through a rotating block. Hydraulic oil is filled into the first telescopic rod 701, the liquid guide tube 702 and the second telescopic rod 703.

[0042] In the above solution, the aim is to address the issue that during the process of the tower crane being fixed and operating on the support frame 6, a horizontal force exerted by the tower crane on the support frame 6 will ultimately act on the threaded connection between the adjusting bolt 501 and the sliding plate 502. Due to the large weight of the tower crane, the threads on the adjusting bolt 501 are prone to damage, greatly affecting the safety of the tower crane and the personnel on it. The two sliding frames 601 are respectively located at one diagonal of the rectangular frame formed by the two first sliding frames 3 and the two second sliding frames 4. By locking only the two intersection points of the first sliding frames 3 and the two second sliding frames 4, the two first sliding frames 3 and the two second sliding frames 4 can be relatively fixed. The rotating connection between the connecting rod 603 and the locking frame 602 is biased towards the inner wall of the connecting frame 1. The locking frame 602 locks the relative position of the first sliding frame 3 and the second sliding frame 4 by deflection, so that the first sliding frame 3 and the second sliding frame 4 cannot move towards the inner wall of the connecting frame 1 under the action of the tower crane force. According to the locking method of the locking frame 602, the greater the force of the tower crane, the more stable the relative fixation of the first sliding frame 3 and the second sliding frame 4. The first telescopic rod 701 and the second telescopic rod 703 are both existing mechanisms (both are composed of a cylinder, a piston and a sliding rod. The piston slides in a sealed manner inside the cylinder, and the sliding rod controls the inflow and outflow of hydraulic oil in the cylinder through the piston).

[0043] Workflow: During the adjustment of the positions of the first sliding frame 3 and the second sliding frame 4, the sliding frame 601 slides synchronously with the first sliding frame 3 and the second sliding frame 4. The fine-tuning operation of the support frame 6 is repeated. After the center of gravity on the support plate 2 is adjusted, before installing the tower crane foundation section, the operator manually rotates the two second bolts 704. Taking the second bolt 704 on the left front side as an example, the second bolt 704 moves backward into the connecting frame 1. The second bolt 704 pushes the telescopic end of the first telescopic rod 701 to retract through the third spring connected to it. The hydraulic oil in the first telescopic rod 701 enters the two second telescopic rods 703 through the guide pipe 702. The telescopic end of the second telescopic rod 703 extends and pushes the adjacent locking frame 602 to deflect through the connected second spring. The inclined surface of the locking frame 602 is in contact with the first sliding frame 3, and the inclined surface of the other locking frame 602 is in contact with the second sliding frame 4. During operation, the tower crane exerts a horizontal force on the four support frames 6. The four support frames 6 cause the rectangular frame formed by the two first sliding frames 3 and the two second sliding frames 4 to tend to expand, in order to... Figure 9For example, the first sliding frame 3 tends to move forward, and the second sliding frame 4 tends to move to the left. The second sliding frame 4 pulls the right locking frame 602 eccentrically through the connecting bent rod 603 on the right. Since the locking frame 602 is deflected and locked on the first sliding frame 3, the second sliding frame 4 cannot move to the left. Similarly, the first sliding frame 3 cannot move forward. The horizontal force of the tower crane device acts on the connecting frame 1 through the support frame 6, connecting block 7, connecting frame 5, first sliding frame 3 and second sliding frame 4, ensuring the stability of the parts and structure of the connecting frame 1 and improving the safety of the threaded connection between the adjusting bolt 501 and the sliding plate 502.

[0044] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are only illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. A multifunctional tower crane foundation conversion and installation leveling device, characterized in that, include: A connecting frame (1) is provided with a support plate (2), and two first sliding frames (3) and two second sliding frames (4) are connected in a limiting sliding connection within the connecting frame (1). Four fixed units are located at the intersections of the two first sliding frames (3) and the two second sliding frames (4); The fixing unit includes: a connecting frame (5), a support frame (6), two connecting blocks (7) and two fine-tuning mechanisms; The connecting frame (5) is installed at the intersection of the first sliding frame (3) and the adjacent second sliding frame (4); The support frame (6) is slidably connected to the support plate (2), and a tension spring is fixed between the support frame (6) and the connecting frame (5); Both connecting blocks (7) are slidably connected to the support frame (6), and the connecting blocks (7) are used to press the connecting frame (5); The fine-tuning mechanism is disposed on the connecting frame (5) and is used to fine-tune the position of the support frame (6); A synchronization control mechanism is provided inside the connecting frame (1) for synchronously changing the distance between the two first sliding frames (3) and the two second sliding frames (4); The fine-tuning mechanism includes: The first bolt (201) is threaded to the connecting frame (5). The first bolt (201) is used to press and fix the positions of the support frame (6) and the connecting block (7). The fixing rod (202) is slidably connected to the connecting block (7), and the fixing rod (202) is fixedly connected to the first bolt (201); A self-locking component is provided on the first bolt (201) for locking the position of the support frame (6) relative to the connecting frame (5); Self-locking components include: The connecting plate (301) is rotatably connected to the first bolt (201). The limiting block (302) is slidably connected to the lower part of the connecting plate (301). A first spring is fixed between the limiting block (302) and the connecting plate (301). A recess is provided at the lower part of the connecting block (7). The limiting block (302) is used to insert into the recess of the connecting block (7) so that the connecting frame (5) and the support frame (6) are relatively fixed. The connecting frame (1) is provided with a plurality of uniformly distributed cylinders. The cylinders in the connecting frame (1) contact and support the support plate (2) to distribute the squeezing force of the support frame (6) on the support plate (2) to the connecting frame (1) and prevent the support plate (2) from deforming due to concentrated force. The synchronization control mechanism includes: A fixed column (401) is fixedly connected to the connecting frame (1); Two sliding rings (402) are slidably connected to the fixed column (401). The first sliding frame (3) and the second sliding frame (4) are rotatably connected to rotating plates (403). One sliding ring (402) is rotatably connected to the two rotating plates (403) on the first sliding frame (3), and the other sliding ring (402) is rotatably connected to the two rotating plates (403) on the second sliding frame (4). An adjustment component, disposed on the connecting frame (1), is used to change and lock the positions of the two sliding rings (402); The fixed column (401) is located at the center of the connecting frame (1). The two rotating plates (403) connected to the same sliding ring (402) are distributed in a mirror image. The center of the rectangular frame formed by the first sliding frame (3) and the second sliding frame (4) coincides with the center of the connecting frame (1), so that the center of gravity of the four support frames (6) is centered on the connecting frame (1), which facilitates the rapid adjustment of the position of the four support frames (6). The adjustment component includes: Both adjusting bolts (501) are rotatably connected to the connecting frame (1); Two sliding plates (502) are fixed to the corresponding sliding rings (402). The sliding plates (502) are threadedly connected to the adjacent adjusting bolts (501). The sliding plates (502) are limited to sliding with the connecting frame (1), so that the sliding plates (502) and the sliding rings (402) move up and down synchronously. Also includes: Two limiting mechanisms are respectively disposed at one end of the two first sliding frames (3), for ensuring that the horizontal offset force on the support frame (6) acts directly on the connecting frame (1), and the limiting mechanisms include: A sliding frame (601) is slidably connected to one end of the first sliding frame (3). The sliding frame (601) is slidably connected to the adjacent second sliding frame (4). The sliding frame (601) is located at the intersection of the first sliding frame (3) and the second sliding frame (4). Locking frames (602) are slidably connected to both the first sliding frame (3) and the two second sliding frames (4). Two connecting rods (603) are rotatably connected to the sliding frame (601). The connecting rods (603) are rotatably connected to the adjacent locking frame (602). The rotatable connection between the connecting rods (603) and the locking frame (602) is biased towards the inner wall of the connecting frame (1). The locking frame (602) locks the relative positions of the first sliding frame (3) and the second sliding frame (4) by deflection. A locking component is provided in the connecting frame (1) for actively controlling the deflection of the locking frame (602); The inner edge of the locking frame (602) is set as a bevel. The bevel of the locking frame (602) is used to fit the first sliding frame (3) or the second sliding frame (4), so that the relative fixed state of the first sliding frame (3) and the second sliding frame (4) is more stable. The locking component includes: The first telescopic rod (701) is fixedly connected to the sliding frame (601), and the first telescopic rod (701) is connected to the liquid guide tube (702). Two second telescopic rods (703) are fixed to the sliding frame (601), and both second telescopic rods (703) are connected to the liquid guide tube (702). A second spring is fixed between the telescopic end of the second telescopic rod (703) and the adjacent locking frame (602). The second bolt (704) is threaded to one corner of the connecting frame (1). The second bolt (704) is fixed to the telescopic end of the first telescopic rod (701) via a rotating block and a third spring. The first telescopic rod (701), the liquid guide tube (702) and the second telescopic rod (703) are all filled with hydraulic oil.

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