A tower crane conversion section

Abstract

The present invention relates to the technical field of tower cranes, and in particular to a tower crane conversion section, comprising a mounting base, an outer box body, a fixed tripod and an upper mounting plate, wherein the mounting base is used to connect the anchor piles in the tower crane mounting base, and the legs of the standard section at the bottom of the tower crane are vertically mounted on the upper mounting plate and connected to the fixed tripod through bolts; the fixed tripod is mounted on an adjusting portion, and the adjusting portion includes an upper mounting structure for mounting the fixed tripod, and the upper mounting structure includes two first slides set up in parallel, and two second slides set up perpendicular to the first slides are arranged below the first slides, and fixed tripods are respectively installed at the intersections of the first slide and the second slide, and the fixed tripod can slide on the first slide and the second slide; the fixed tripod in the present invention can swing, so as to better fit with the standard section at the bottom of the tower crane, and the fixed tripod of the present invention can also move freely along the horizontal plane, so as to adapt to a wider range of tower crane sizes.

Description

Technical Field

[0001] The invention relates to the technical field of tower cranes, and in particular to a tower crane conversion section. Background Art

[0002] Tower crane, also known as tower crane, is the most commonly used lifting equipment on construction sites. It can lift itself section by section and gradually rise. Most of them are square frame columnar structures. The metal frame that constitutes the tower crane and lifts the tower crane section by section is referred to as the standard section. The tower crane is composed of several standard sections stacked up one by one and rising, and the adjacent standard sections are fixed with bolts. In the process of construction, the tower crane is mainly used to lift steel bars, concrete, bricks and wood and other building materials or construction equipment on the construction site. With the rapid development of the construction engineering field, more and more materials need to be lifted by tower cranes, so the construction site has higher and higher requirements for the load-bearing and lifting weight of the tower crane. It is hoped that the tower crane can lift more building materials and heavier materials at a time, which requires the tower crane installation base to be cast more firmly, including using higher-grade concrete to cast the tower crane installation base, casting the tower crane installation base larger, casting deeper, and burying more and thicker steel bars in the foundation during the casting process, so as to improve the load-bearing performance of the tower crane installation base. On the other hand, to prevent tipping, the spacing of the anchor piles cast in the tower crane installation base that connects to the tower crane should be set as large as possible, so that the support area of ​​the tower crane connected to the foundation is as large as possible. This is similar to the common power tower or communication tower, the cross-sectional area of ​​the connection between the bottom of the tower and the base is usually larger than the cross-sectional area of ​​the tower body, so as to improve the stability of the tower and prevent tipping. Similarly, in order to improve the stability of the tower crane after installation and improve its anti-overturning performance when lifting heavier building materials, the spacing of the four anchor piles cast in the tower crane installation base should also be set as large as possible. In addition, in order to reduce the weight of the tower crane itself and from an economic point of view, the length and width of the standard section that constitutes the main body of the tower crane should not be too large, which leads to the need to use a conversion device to connect the standard section of the tower crane with the anchor piles in the tower crane installation base. This conversion device is often called a conversion section.

[0003] The patent document with Chinese patent application number CN201220684061.0 discloses a tower crane conversion section, including an upper transition section and a lower transition section, wherein the upper transition section is connected to the lower transition section, and the vertical cross-sectional area of ​​the upper transition section is smaller than the vertical cross-sectional area of ​​the lower transition section. The patent document also discloses a tower crane using the tower crane conversion section, wherein the tower crane conversion section is connected to an upper tower body through an upper transition section column, and the tower crane conversion section is connected to a lower tower body through a lower transition section column, and the vertical cross-sectional area of ​​the upper tower body is smaller than the vertical cross-sectional area of ​​the lower tower body.

[0004] The disadvantage of this solution is that it can only adapt to tower cranes of a single size and has poor fit with the tower crane. During the tower crane fixing process, the tower crane is prone to displacement due to uneven force. Summary of the invention

[0005] The present invention proposes a tower crane conversion joint to solve the technical problems in the prior art that a tower crane conversion joint can only adapt to a tower crane of a single size and has poor fit with the tower crane, and that during the tower crane fixing process, the tower crane is easily displaced due to uneven force.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A tower crane conversion section is used to connect the anchor piles in the tower crane installation base and the support legs of the standard section at the bottom of the tower crane. The tower crane includes a plurality of standard sections stacked one on top of the other. Adjacent standard sections are connected and fixed by bolts. The tower crane conversion section includes a mounting base, an outer box, a fixed foot frame and an upper mounting plate. The mounting base is used to connect the anchor piles in the tower crane installation base. The support legs of the standard section at the bottom of the tower crane are vertically mounted on the upper mounting plate and connected to the fixed foot frame by bolts.

[0008] The fixed tripod is installed on the adjustment part, and the adjustment part includes an upper installation structure for installing the fixed tripod, and the upper installation structure includes two first slides set up in parallel, and two second slides set up perpendicularly to the first slides are arranged below the first slides, and the fixed tripods are respectively installed at the intersections of the first slides and the second slides, and the fixed tripods can slide on the first slides and the second slides;

[0009] A connecting block is respectively provided at the middle position of the first slide and the second slide, the first slide is installed with a first connecting rod through the connecting block, and the second slide is installed with a second connecting rod through the connecting block, and the other ends of the first connecting rod and the second connecting rod are both installed on the adjusting part.

[0010] Furthermore, the connecting block protrudes inwardly from the side wall of the first slide or the second slide, and the first connecting rod or the second connecting rod is respectively clamped on the connecting block and can rotate relative to the connecting block. The distance between the two first slides can be adjusted by the two first connecting rods, and the distance between the two second slides can be adjusted by the two second connecting rods; the first connecting rod, the second connecting rod, the first slide and the second slide form a field-shaped structure, and the adjustment part is located at the center of the field-shaped structure.

[0011] Furthermore, the adjustment part includes a bolt for transmission, the two ends of the bolt are respectively mounted on the upper mounting plate and the mounting base, a driving group is mounted on the bolt, two driving groups are provided, and the two driving groups are respectively connected to the first connecting rod and the second connecting rod;

[0012] The two ends of the bolt are rotatably connected to the upper mounting plate and the mounting base. The bolt is connected to a matching motor through a reducer. The matching motor is arranged in an outer box. The output shaft of the matching motor is connected to the input shaft of the reducer. The output shaft of the reducer is meshed with the gear sleeved on the bolt through an output gear.

[0013] Preferably, the driving group includes a sleeve body which is sleeved on the bolt, the sleeve body is provided with a through groove arranged along the radial direction of the bolt, and an arcuate thread block is installed on the sleeve body. The arcuate thread block can slide in the through groove. When the arcuate thread block slides toward the bolt in the through groove, it can be threadedly connected with the bolt; when the arcuate thread block slides away from the bolt in the through groove, it can be separated from the bolt.

[0014] In the above-mentioned tower crane conversion joint, the arc-shaped threaded block is in a concave shape, and its concave part is a circular arc structure, and an internal thread is provided on the concave circular arc, and the internal thread provided on the concave arc surface of the arc-shaped threaded block is threadedly connected with the external thread of the bolt; an extension rod is provided on the arc-shaped threaded block, and one end of the extension rod away from the arc-shaped threaded block is installed on the outer box body and extends out of the outer box body, the extension rod can slide on the outer box body, and a spring is connected between the extension rod and the outer box body.

[0015] Furthermore, a protrusion is fixedly provided at a position adjacent to the outer wall of the outer box body on the periphery of the extension rod, and a spring abuts between the protrusion and the inner side of the plate wall of the outer box body. In the initial state, the spring is in a compressed energy storage state, maintaining the push against the protrusion and pushing the threaded block toward the bolt so that the two remain threadedly connected.

[0016] Furthermore, a C-shaped frame is fixedly provided at the middle position of the extension rod, and the two outwardly extending ends of the C-shaped frame are arranged in the horizontal direction, and the two outwardly extending ends of the C-shaped frame are parallel to the extension rod, and a fixing frame that cooperates with the C-shaped frame and can fix the C-shaped frame is provided in the end point direction of the two outwardly extending ends of the C-shaped frame, and the fixing frame is in the shape of comb teeth, and a fixing frame is erected corresponding to each outwardly extending end of the C-shaped frame, and the two outwardly extending ends of the C-shaped frame can be inserted into the comb tooth grooves provided on the fixing frame, and as the height of the extension rod is increased or decreased, the two outwardly extending ends of the C-shaped frame can be inserted into the comb tooth grooves of the corresponding height on the fixing frame, and the bottom of the fixing frame is fixedly installed on the mounting base;

[0017] Magnetic pieces are arranged on the two outwardly extending ends of the C-shaped frame, and magnetic pieces are also arranged in each comb tooth groove of the fixed frame. The magnetic poles of the magnetic pieces on the two outwardly extending ends of the C-shaped frame are opposite to those of the magnetic pieces in each comb tooth groove of the opposite fixed frame.

[0018] Preferably, the outer box body is a box body enclosed by two first baffles set up in parallel and two second baffles set up in parallel, the first baffle and the second baffle are parallel to the first slide and the second slide respectively, the first baffle is provided with a first slide groove for installing the second slide, and the second baffle is provided with a second slide groove for installing the first slide; the first baffle and the second baffle are both provided with a third slide groove for the extension rod to pass through, the establishment direction of the third slide groove is along the axial direction of the bolt, a slider is provided in the third slide groove, the slider can slide freely in the third slide groove, the extension rod passes through the slider arrangement, and the spring arranged on the extension rod is installed on the slider.

[0019] More preferably, the fixed tripod comprises a mounting frame mounted on the first slide and the second slide, the mounting frame is provided with grooves parallel to the first slide and the second slide respectively, and the mounting frame is installed with a fixing group for fixing the standard section at the bottom of the tower crane.

[0020] Furthermore, the fixing group includes an angle bracket installed on the mounting bracket, the mounting bracket and the angle bracket are hinged by a connecting shaft, and a contact plate is installed on the surface of the angle bracket close to the standard section at the bottom of the tower crane through a spring, and both ends of the spring are respectively fixedly connected between the angle bracket and the contact plate, and a friction plate for increasing friction is also arranged on the contact surface between the contact plate and the standard section at the bottom of the tower crane; a plurality of through holes are also opened on the angle bracket and the contact plate, and the through holes are respectively arranged through the through holes of the spring, and bolts are used to pass through the through holes to connect the angle bracket and the standard section at the bottom of the tower crane.

[0021] The tower crane conversion section proposed by the present invention has the following beneficial effects:

[0022] The fixed tripod of the present invention can swing, so it can better fit with the standard section at the bottom of the tower crane, so the standard section at the bottom of the tower crane is fixed more stably.

[0023] The present invention can increase the friction force between the tower crane and the bottom standard section through the contact plate, and can pre-tighten the bottom standard section of the tower crane through the spring before the bottom standard section of the tower crane is fixed.

[0024] The fixed tripod of the present invention can move freely along the horizontal plane, and has a larger conversion range for the standard section at the bottom of the tower crane, thereby being able to adapt to a wider range of tower crane sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of the tower crane conversion section proposed by the present invention;

[0026] Figure 2 This is a schematic diagram of the installation state of the tower crane conversion section proposed by the present invention;

[0027] Figure 3 It is a schematic diagram of the installation structure of the adjustment part and the fixed tripod base frame of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the regulating part of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the upper mounting structure of the present invention;

[0030] Figure 6 It is a structural schematic diagram of the regulating part of the present invention;

[0031] Figure 7 is a schematic diagram of the supplementary structure of the regulating part of the present invention;

[0032] Figure 8 It is a partial structural schematic diagram of the regulating part of the present invention;

[0033] Fig. 9 It is a structural schematic diagram of the fixed tripod of the present invention;

[0034] Fig.10 It is a schematic structural diagram of the outer box body described in the present invention.

[0035] Markings in the figure: 1. Mounting base; 2. Outer box; 21. First baffle; 22. First slide; 23. Third slide; 24. Second baffle; 25. Second slide; 3. Adjustment part; 31. Upper mounting structure; 311. First slide; 312. Second slide; 313. First connecting rod; 314. Second connecting rod; 32. Adjustment part; 321. Bolt; 322. Sleeve; 323. Arc thread block; 324. Extension rod; 325. C-shaped frame; 326. Bump; 33. Fixed frame; 4. Fixed foot frame; 41. Mounting frame; 42. Angle frame; 43. Spring; 44. Contact plate; 5. Upper mounting plate; 6. Anchor piles in the tower crane mounting base; 7. Support feet of the standard section at the bottom of the tower crane. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] Tower crane, also known as tower crane, is the most commonly used lifting equipment on construction sites. It can lift itself section by section and gradually rise. Most of them are square frame columnar structures. The metal frame that constitutes the tower crane and lifts the tower crane section by section is referred to as the standard section. The tower crane is composed of several standard sections stacked up one by one and rising, and the adjacent standard sections are fixed with bolts. In the process of construction, the tower crane is mainly used to lift steel bars, concrete, bricks and wood and other building materials or construction equipment on the construction site. With the rapid development of the construction engineering field, more and more materials need to be lifted by tower cranes, so the construction site has higher and higher requirements for the load-bearing and lifting weight of the tower crane. It is hoped that the tower crane can lift heavier building materials at a time, which requires the tower crane installation base to be cast more firmly, including using higher-grade concrete to cast the tower crane installation base, casting the tower crane installation base larger, casting deeper, and burying more and thicker steel bars in the foundation during the casting process, so as to improve the load-bearing performance of the tower crane installation base. On the other hand, to prevent tipping, the spacing of the anchor piles cast in the tower crane installation base that connects to the tower crane should be set as large as possible, so that the support area of ​​the tower crane connected to the foundation is as large as possible. This is similar to the common power tower or communication tower, the cross-sectional area of ​​the connection between the bottom of the tower and the base is usually larger than the cross-sectional area of ​​the tower body, so as to improve the stability of the tower and prevent tipping. Similarly, in order to improve the stability of the tower crane after installation and improve its anti-overturning performance when lifting heavier building materials, the spacing of the four anchor piles cast in the tower crane installation base should also be set as large as possible. In addition, in order to reduce the weight of the tower crane itself and from an economic point of view, the length and width of the standard section that constitutes the main body of the tower crane should not be too large, which leads to the need to use a conversion device to connect the standard section of the tower crane with the anchor piles in the tower crane installation base. This conversion device is often called a conversion section.

[0038] like Figure 2 As shown, the anchor piles 6 in the tower crane installation base are four anchor piles in the tower crane installation base cast in the ground foundation. The lower ends of the four anchor piles 6 are connected and deeply buried in the tower crane installation base, and are connected to the steel bars cast in the tower crane installation base. The parts of the four anchor piles 6 exposed from the ground are connected to the conversion section. The tower crane conversion section proposed in this embodiment has its lower end connected to the anchor piles 6 by multiple bolts, as shown in FIG. Figure 2 shown.

[0039] like Figures 1 to 10 As shown, this embodiment discloses a tower crane conversion section, which is used to connect the standard section at the bottom of the tower crane with the anchor pile 6 in the tower crane installation base. As mentioned above, the tower crane includes a plurality of standard sections stacked one by one, and the standard section at the bottom of the tower crane is called the tower crane bottom standard section. The anchor pile 6 in the tower crane installation base is connected to the four legs of the tower crane bottom standard section.

[0040] The tower crane conversion section proposed in this embodiment includes an upper mounting plate 5, a mounting base 1, an outer box body 2, and a fixed support frame 4. The fixed support frame 4 is used to connect the support feet 7 of the standard section at the bottom of the tower crane, and the mounting base 1 is used to connect the anchor piles 6 in the tower crane mounting base, specifically as Figure 1 and Figure 2 shown. The support feet 7 of the standard section at the bottom of the tower crane are integrally connected to the fixed support frame 4 by a number of bolts, and the support feet 7 of the standard section at the bottom of the tower crane are vertically installed on the upper mounting plate 5.

[0041] The fixed support frame 4 is installed on the adjusting part 3, as Figure 3-Figure 5 shown. The adjusting part 3 includes an upper mounting structure 31 for installing the fixed support frame 4. The upper mounting structure 31 includes two first sliding frames 311 arranged in parallel. The two first sliding frames 311 are respectively arranged on the left and right sides. Below the two first sliding frames 311, there are two second sliding frames 312 perpendicular to the first sliding frames 311. The two first sliding frames 311 and the two second sliding frames 312 form a "well" - shaped structure, and the fixed support frame 4 is installed at the intersection points of the first sliding frames 311 and the second sliding frames 312 respectively.

[0042] As Figure 5 shown. The fixed support frame 4 is installed on the first sliding frame 311 and the second sliding frame 312, and the fixed support frame 4 can slide on the first sliding frame 311 and the second sliding frame 312. The second sliding frame 312 is not limited to being located below the first sliding frame 311, and can also be arranged above the first sliding frame 311. Installing the fixed support frame 4 by using the first sliding frame 311 and the second sliding frame 312 can enable the fixed support frame 4 to slide on the first sliding frame 311 and the second sliding frame 312, thereby adjusting the range that the four fixed support frames 4 can adapt to.

[0043] At the middle position of each first sliding frame 311, there is a connecting block, and a first connecting rod 313 is installed through the connecting block, as Figure 5 shown. The connecting block protrudes inward from the side wall of the first sliding frame 311. The first connecting rod 313 is clamped on the connecting block and can rotate relative to the connecting block. The distance between the two first sliding frames 311 can be adjusted through the two first connecting rods 313; similarly, at the middle position of each second sliding frame 312, there is also a connecting block, and a second connecting rod 314 is installed through the connecting block. The second connecting rod 314 can also rotate relative to the connecting block. The distance between the two second sliding frames 312 can be adjusted through the two second connecting rods 314, thereby realizing the adjustment of the position of the fixed support frame 4. The other ends of the two first connecting rods 313 and the two second connecting rods 314 are all connected to the adjusting part 32. As Figure 5 shown, the first connecting rod 313, the second connecting rod 314, the first sliding frame 311, and the second sliding frame 312 form a "field" - shaped structure, and the adjusting part 32 is located at the center position of the "field" - shaped structure.

[0044] like Figures 4 to 8 As shown, the adjustment part 32 includes a bolt 321 for transmission, and both ends of the bolt 321 are respectively mounted on the upper mounting plate 5 and the mounting base 1. The upper mounting plate 5 is used to place the tower crane base, and the steel material and steel plate thickness of the upper mounting plate 5, the outer box body 2 and the mounting base 1 are selected according to the weight of the tower crane and the weight of the hoisted building materials. In order to increase the load-bearing performance of the outer box body 2, a number of load-bearing steel columns connecting the upper mounting plate 5 and the mounting base 1 can also be erected in the outer box body 2.

[0045] Specifically, both ends of the bolt 321 are rotatably connected to the upper mounting plate 5 and the mounting base 1 through rolling bearings, and the bolt 321 can rotate between the upper mounting plate 5 and the mounting base 1. The bolt 321 is connected to a matching motor through a reducer, and the matching motor is arranged in the outer box 2. The output shaft of the matching motor is connected to the input shaft of the reducer. The output shaft of the reducer is meshed with the gear sleeved on the bolt 321 through an output gear (not shown in the figure), and the bolt 321 can be driven to rotate through the matching motor and the reducer. A driving group is installed on the bolt 321, and the driving group is provided with two driving groups, which are respectively connected to the first connecting rod 313 and the second connecting rod 314. The driving group can drive the first slide 311 and the second slide 312 to move through the first connecting rod 313 and the second connecting rod 314, so as to achieve the adjustment of the fixed tripod 4. The driving group includes a sleeve 322 sleeved on the bolt 321, and the sleeve 322 is provided with a through groove arranged along the radial direction of the bolt 321. 2 is installed with an arc-shaped thread block 323, and the arc-shaped thread block 323 can slide in the through groove. The arc-shaped thread block 323 and the bolt 321 can be screwed together and separated by sliding, thereby realizing the control and relaxation of the sleeve 322, that is, when the arc-shaped thread block 323 slides toward the bolt 321 in the through groove, it can be screwed together with the bolt 321; when the arc-shaped thread block 323 slides away from the bolt 321 in the through groove, it can be separated from the bolt 321.

[0046] like Figure 7 and Figure 8 As shown, the arc-shaped thread block 323 is concave in shape, and its concave part is an arc-shaped structure, and an internal thread is provided on the concave arc, and the internal thread provided on the concave arc surface of the arc-shaped thread block 323 is threadedly connected with the external thread of the bolt 321.

[0047] The arc-shaped threaded block 323 is provided with an extension rod 324 for controlling the arc-shaped threaded block 323. The extension rod 324 can be used to conveniently control the screw connection and separation between the arc-shaped threaded block 323 and the bolt 321. The end of the extension rod 324 away from the arc-shaped threaded block 323 is installed on the outer box body 2 and extends out of the board wall of the outer box body 2. The extension rod 324 can slide freely on the outer box body 2. In order to prevent the arc-shaped threaded block 323 from being separated from the bolt 321 due to external shock force, a spring is connected between the extension rod 324 and the outer box body 2. Since the extension rod 324 is horizontal, In order to prevent the extension rod 324 from tilting, a protrusion 326 is fixedly provided at a position adjacent to the outer wall of the outer box body 2 on the periphery of the extension rod 324, and a spring is arranged between the protrusion 326 and the inner side of the plate wall of the outer box body 2, that is, one end of the spring abuts against the inner side of the plate wall of the outer box body 2, and the other end abuts against the end side of the protrusion 326 away from the arc-shaped threaded block 323. In the initial state, the spring is always in a compressed energy storage state, thereby always maintaining a pushing effect on the protrusion 326, and relying on the elastic force of the spring, the threaded block 323 can be pushed toward the bolt 321, so that the two remain threadedly connected under normal conditions.

[0048] In order to fix the position of the arc-shaped threaded block 323 after being separated from the bolt 321, a C-frame 325 is provided in the middle position of the extension rod 324, and the middle position of the C-frame 325 is fixedly installed on the extension rod 324, and the two protruding ends of the C-frame 325 are arranged in the horizontal direction, and the two protruding ends of the C-frame 325 are parallel to the extension rod 324, and a fixing frame 33 that cooperates with the C-frame and can fix the C-frame is provided in the end point direction of the two protruding ends of the C-frame 325. The fixing frame 33 is in the shape of comb teeth, and a fixing frame is erected corresponding to the protruding end of each C-frame 325. The two protruding ends of the C-frame 325 can be inserted into the comb tooth grooves opened on the fixing frame 33, and as the height of the extension rod 324 increases or decreases, the two protruding ends of the C-frame 325 can be inserted into the comb tooth grooves of corresponding heights on the fixing frame 33. The bottom of the fixing frame 33 is fixedly mounted on the mounting base 1. Preferably, the top of the fixing frame 33 can be fixedly connected to the upper mounting plate 5. In order to prevent the extension rod 324 from being acted upon by the spring, which causes the two protruding ends of the C-shaped frame 325 to fall off from the comb-tooth groove of the fixing frame 33, in this embodiment, the two protruding ends of the C-shaped frame 325 and the comb-tooth groove of the fixing frame 33 also adopt a magnetic attraction matching method. Specifically, magnetic sheets are attached to the two protruding ends of the C-shaped frame 325, and magnetic sheets are also attached to each comb-tooth groove of the fixing frame 33. The magnetic sheets on the two protruding ends of the C-shaped frame 325 and the magnetic sheets in each comb-tooth groove of the fixing frame 33 have opposite magnetic poles on the opposite sides. Of course, the magnetic sheets can also be set on the upper and lower end surfaces of the two protruding ends of the C-shaped frame 325, and the upper and lower groove surfaces of each comb-tooth groove of the fixing frame 33.

[0049] Further, such as Fig.10As shown, in this embodiment, the outer box body 2 is a box body enclosed by two parallel first baffles 21 and two parallel second baffles 24. A mounting base 1 for fixing the device is provided at the bottom of the box body, and the steel material and steel plate thickness of the first baffle 21, the second baffle 24 and the mounting base 1 are selected according to the weight of the tower crane and the weight of the hoisted building materials. In order to increase the load-bearing performance of the outer box body 2, a number of load-bearing steel columns connected to the mounting plate 5 and the mounting base 1 can also be erected in the outer box body 2. The mounting base 1 is connected to the anchor pile 6 in the tower crane mounting base by bolt connection. The first baffle plate 21 and the second baffle plate 24 are parallel to the first slide 311 and the second slide 312 respectively. The first baffle plate 21 is provided with a first slide groove 22 for installing the second slide 312. The two ends of the second slide 312 are respectively installed in the first slide grooves 22 of the two first baffle plates 21. The second slide 312 can slide freely in the first slide groove 22. The first slide groove 22 can be used to fix the vertical position of the second slide 312. The second baffle plate 24 is provided with a second slide groove 25 for installing the first slide 311. The two ends of the first slide 311 are respectively installed in the second slide grooves 25 of the two second baffle plates 24. The first slide 311 can slide freely in the first slide groove 22. The first slide groove 22 can be used to fix the vertical position of the second slide 312. 25, the second slide groove 25 can be used to fix the vertical position of the first slide 311, the first baffle plate 21 and the second baffle plate 24 are both provided with a third slide groove 23 for the extension rod 324 to pass through, the third slide groove 23 is set in the axial direction of the bolt 321, and such a setting can enable the extension rod 324 to slide in the third slide groove 23, thereby adapting to the height of the arc-shaped threaded block 323 on the bolt 321, and a slider is provided in the third slide groove 23, and the slider can slide freely in the third slide groove 23, the extension rod 324 passes through the slider setting, and the spring set on the extension rod 324 is installed on the slider, so as to ensure that the spring can always follow the up and down movement during the movement of the extension rod 324, so that the spring will not be twisted and deformed.

[0050] Furthermore, as shown in Figure 9, the fixed tripod 4 includes a mounting frame 41 installed on the first slide 311 and the second slide 312, and the mounting frame 41 is provided with four, and the four mounting frames 41 correspond to the four legs of the standard section at the bottom of the tower crane respectively, and the mounting frame 41 is provided with grooves parallel to the first slide 311 and the second slide 312 respectively. Such a configuration ensures the vertical position of the mounting frame 41, so that the mounting frame 41 can only move horizontally, and a fixing group for fixing the standard section at the bottom of the tower crane is installed on the mounting frame 41, and the fixing group includes an angle frame 42 installed on the mounting frame 41, and the mounting frame 41 and the angle frame 42 are hinged by a connecting shaft, so that the angle frame 42 can swing on the mounting frame 41. Since some of the standard sections at the bottom of the tower crane are of a structure that is wide at the top and narrow at the bottom, some of the side lines of the four legs of the standard section at the bottom of the tower crane are in an inclined state, and the swing of the angle frame 42 can make the angle frame 42 and the bottom of the tower crane In order to ensure a better fit between the standard section and to prevent the angle bracket 42 from interfering with the tower crane during movement, a contact plate 44 is installed on the inner wall of the angle bracket 42 near the standard section at the bottom of the tower crane through a spring 43. The two ends of the spring 43 are respectively fixedly connected between the angle bracket 42 and the contact plate 44. The spring 43 can be used to pre-tighten the standard section at the bottom of the tower crane during the movement of the angle bracket 42 to prevent the standard section at the bottom of the tower crane from being displaced during the fixing process. A friction plate for increasing friction is also provided on the contact surface between the contact plate 44 and the standard section at the bottom of the tower crane. Of course, a number of through holes are also provided on the angle bracket 42 and the contact plate 44. The axial center line of the through hole is preferably consistent with the axial center line of the spring 43, that is, the through holes are respectively arranged to pass through the through holes of the spring 43. After the angle bracket 42 fixes the standard section at the bottom of the tower crane, bolts are used to pass through the through holes to connect the angle bracket 42 and the standard section at the bottom of the tower crane to further fix the standard section at the bottom of the tower crane. In addition, in order to increase the reliability of the connection between the angle bracket 42 and the standard section at the bottom of the tower crane, the height of the angle bracket 42 can be increased, thereby increasing the length of the connection between the angle bracket 42 and the standard section at the bottom of the tower crane.

[0051] Of course, it is preferred that the lower surfaces of the angle bracket 42 and the contact plate 44 are both closely attached to the upper mounting plate 5, and the legs 7 of the standard section at the bottom of the tower crane are all vertically mounted on the upper mounting plate 5. The weight of the tower crane and the building materials it lifts are jointly borne by the upper mounting plate 5, the outer box 2, the load-bearing steel columns arranged in the outer box 2, the bottom plate 1 and the anchor piles 6 in the tower crane installation base.

[0052] When using the tower crane conversion section proposed by the present invention, the installation base 1 is first connected and fixed to the anchor piles 6 in the tower crane installation base by connecting bolts. Of course, the outer dimensions of the installation base 1 should be compatible with the spacing between the anchor piles 6 in the tower crane installation base. Then, the tower crane bottom standard section is placed upright on the upper mounting plate 5, and the matching motor of the bolt 321 is started. By pulling or pushing the extension rod 324, the arc-shaped threaded block 323 is controlled to rotate, so that the arc-shaped threaded block 323 is screwed or separated from the bolt 321, thereby realizing the fixed or movable conversion of the position of the sleeve 322. During the up and down movement of the sleeve 322, the first slide 311 and the second slide 312 are pulled by the first connecting rod 313 and the second connecting rod 314 to move, so that the four fixed brackets 4 are in contact with the four legs of the tower crane bottom standard section. The tower crane bottom standard section is fixed. During the fixing process, the spring 43 and the contact plate 44 can be used to pre-tighten the standard section at the bottom of the tower crane to avoid displacement of the standard section at the bottom of the tower crane during the fixing process. After the standard section at the bottom of the tower crane is fixed and pre-tightened, the matching motor of the bolt 321 is started to further fix the standard section at the bottom of the tower crane. When the angle bracket 42 completes the fixation of the standard section at the bottom of the tower crane, the angle bracket 42 is connected to the standard section at the bottom of the tower crane by bolts passing through the through holes to achieve the final fixation of the standard section at the bottom of the tower crane. Since the angle bracket 42 is an axially rotating setting, the contact area with the standard section at the bottom of the tower crane is larger and the fixation is more stable.

[0053] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tower crane conversion section, used to connect a foundation pile (6) in a tower crane installation base with a support foot (7) of a standard section at the bottom of the tower crane, the tower crane comprising a plurality of stacked standard sections, adjacent standard sections being connected and fixed by bolts, characterized in that: It includes an installation base (1), an outer box body (2), fixed brackets (4) and an upper mounting plate (5). The installation base (1) is used to connect the anchor piles (6) in the tower crane installation base. The feet (7) of the standard section at the bottom of the tower crane are vertically installed on the upper mounting plate (5) and connected to the fixed brackets (4) by bolts. The fixed brackets (4) are installed on the adjustment part. The adjustment part includes an upper mounting structure (31) for installing the fixed brackets (4). The upper mounting structure (31) includes two first sliding frames (311) arranged in parallel. Below the first sliding frames (311), there are two second sliding frames (312) arranged perpendicular to the first sliding frames (311). Fixed brackets (4) are respectively installed at the intersection points of the first sliding frames (311) and the second sliding frames (312), and the fixed brackets (4) can slide on the first sliding frames (311) and the second sliding frames (312). At the middle positions of the first sliding frames (311) and the second sliding frames (312), connection blocks are respectively provided. The first sliding frames (311) are installed with first connecting rods (313) through the connection blocks, and the second sliding frames (312) are installed with second connecting rods (314) through the connection blocks. The other ends of the first connecting rods (313) and the second connecting rods (314) are both installed on the adjustment part. The connection blocks protrude inwards from the side walls of the first sliding frames (311) or the second sliding frames (312). The first connecting rods (313) or the second connecting rods (314) are respectively clamped on the connection blocks and can both rotate relative to the connection blocks. The distance between the two first sliding frames (311) can be adjusted through the two first connecting rods (313), and the distance between the two second sliding frames (312) can be adjusted through the two second connecting rods (314). The first connecting rods (313), the second connecting rods (314), the first sliding frames (311) and the second sliding frames (312) form a cross-shaped structure, and the adjustment part is located at the center of the cross-shaped structure. The adjustment part includes a bolt (321) for transmission. The two ends of the bolt (321) are respectively installed on the upper mounting plate (5) and the installation base (1). A driving group is installed on the bolt (321). There are two driving groups, and the two driving groups are respectively connected to the first connecting rod (313) and the second connecting rod (314). The two ends of the bolt (321) are rotatably connected to the upper mounting plate (5) and the installation base (1). The bolt (321) is connected with a supporting motor through a speed reducer. The supporting motor is arranged in the outer box body (2). The output shaft of the supporting motor is connected to the input shaft of the speed reducer. The output shaft of the speed reducer is meshed with a gear sleeved on the bolt (321) through an output gear. The driving group comprises a sleeve (322) sleeved on the bolt (321), the sleeve (322) being provided with a through groove arranged along the radial direction of the bolt (321), and an arcuate thread block (323) being mounted on the sleeve (322), the arcuate thread block (323) being able to slide in the through groove, and when the arcuate thread block (323) slides in the through groove towards the bolt (321), it can be threadedly connected with the bolt (321); when the arcuate thread block (323) slides in the through groove away from the bolt (321), it can be separated from the bolt (321); The arc-shaped threaded block (323) is in a concave shape, and its concave portion is in an arc-shaped structure. An internal thread is provided on the concave arc, and the internal thread provided on the concave arc surface of the arc-shaped threaded block (323) is threadedly connected to the external thread of the bolt (321); an extension rod (324) is provided on the arc-shaped threaded block (323), and one end of the extension rod (324) away from the arc-shaped threaded block (323) is mounted on the outer box body (2) and extends out of the outer box body (2); the extension rod (324) can slide on the outer box body (2), and a spring is connected between the extension rod (324) and the outer box body (2); A protrusion (326) is fixedly provided at a position adjacent to the outer wall of the outer box body (2) on the outer periphery of the extension rod (324), and a spring is abutted between the protrusion (326) and the inner side of the plate wall of the outer box body (2). In an initial state, the spring is in a compressed energy storage state, and keeps pushing the protrusion (326), and pushes the threaded block (323) toward the bolt (321) so that the two remain threadedly connected; A C-shaped frame (325) is fixedly provided at the middle position of the extension rod (324), and two extended ends of the C-shaped frame (325) are arranged in a horizontal direction, and the two extended ends of the C-shaped frame (325) are parallel to the extension rod (324). A fixing frame (33) is provided at the end points of the two extended ends of the C-shaped frame (325) and cooperates with the C-shaped frame and can fix the C-shaped frame. The fixing frame (33) is in a comb-tooth shape, and a fixing frame is erected corresponding to each extended end of the C-shaped frame (325). The two extended ends of the C-shaped frame (325) can be inserted into the comb-tooth grooves provided on the fixing frame (33), and as the height of the extension rod (324) increases or decreases, the two extended ends of the C-shaped frame (325) can be inserted into the comb-tooth grooves of corresponding heights on the fixing frame (33), and the bottom of the fixing frame (33) is fixedly mounted on the mounting base (1); Magnetic sheets are provided on both protruding ends of the C-shaped frame (325), and magnetic sheets are also provided in each comb tooth groove of the fixed frame (33). The magnetic poles of the magnetic sheets on the two protruding ends of the C-shaped frame (325) and the magnetic sheets in each comb tooth groove of the opposite fixed frame (33) are opposite.

2. A tower crane conversion section according to claim 1, characterized in that: The outer box body (2) is a box body enclosed by two first baffles (21) and two second baffles (24) arranged in parallel. The first baffle (21) and the second baffle (24) are respectively parallel to the first slide (311) and the second slide (312). The first baffle (21) is provided with a first slide groove (22) for installing the second slide (312), and the second baffle (24) is provided with a second slide groove (25) for installing the first slide (311). The first baffle (21) and the second baffle (24) are both provided with a third slide groove (23) for the extension rod (324) to pass through. The third slide groove (23) is arranged in the axial direction of the bolt (321). A slider is arranged in the third slide groove (23). The slider can slide freely in the third slide groove (23). The extension rod (324) passes through the slider, and the spring arranged on the extension rod (324) is installed on the slider.

3. A tower crane conversion section according to claim 2, characterized in that: The fixed foot frame (4) comprises a mounting frame (41) mounted on the first slide frame (311) and the second slide frame (312); grooves parallel to the first slide frame (311) and the second slide frame (312) are provided on the mounting frame (41); and a fixing group for fixing a standard section at the bottom of the tower crane is installed on the mounting frame (41).

4. A tower crane conversion section according to claim 3, characterized in that: The fixing group comprises an angle bracket (42) mounted on a mounting bracket (41), the mounting bracket (41) and the angle bracket (42) being hingedly connected via a connecting shaft, a contact plate (44) being mounted on a surface of the angle bracket (42) close to a standard section at the bottom of the tower crane via a spring A (43), two ends of the spring A (43) being respectively fixedly connected between the angle bracket (42) and the contact plate (44), a friction plate for increasing friction force being further arranged on a contact surface between the contact plate (44) and the standard section at the bottom of the tower crane; a plurality of through holes are further arranged on the angle bracket (42) and the contact plate (44), the through holes being respectively arranged through the through holes of the spring A (43), and bolts being passed through the through holes to connect the angle bracket (42) and the standard section at the bottom of the tower crane.

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