Tower type material distributing machine rotating platform jacking mechanism and jacking method

Abstract

The invention discloses a jacking mechanism and a jacking method for a rotating platform of a tower type material distributor, the jacking mechanism comprises a jacking frame and a jacking assembly, the jacking frame is used for being installed on the rotating platform, the rotating platform is provided with a first channel and a second channel, the jacking assembly is installed in the jacking frame, and the jacking assembly is located above the first channel; the jacking assembly is used for downwards pushing the tower drum located in the first channel so as to jack the rotating platform and the jacking frame; the jacking frame further comprises track beams, the two track beams are transversely installed on the guide groove columns on the two sides respectively, and receding notches are formed in the positions, at the intersections with the track beams, of the guide groove columns. A crane carriage is installed on the track beam and can move above the second channel and the first channel in a reciprocating mode. The jacking assembly is used for pushing the tower barrel section located in the first channel downwards so as to jack the rotating platform and the jacking frame, and therefore jacking of the cargo boom is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of concrete placing equipment, and in particular to a jacking mechanism and a jacking method for a rotating platform of a tower placing machine. Background Art

[0002] A tower crane is a concrete placing equipment. In order to facilitate the rotation of the tower crane's boom, a rotating platform is installed on the tower, and the boom and the balance arm are installed on the rotating platform. In CN203998710U, a tower crane with a concrete placing function is disclosed. The tower crane includes a tower crane body and a concrete placing arm detachably mounted on the tower body of the tower crane body at one end, and the other end of the concrete placing arm is hoisted on the boom of the tower crane body. The concrete placing arm rotates relative to the tower body of the tower crane body under the drive of the boom. As the concrete is poured, the pouring working surface continues to rise, and the boom of the tower crane also needs to rise synchronously. For this reason, a jacking mechanism for a rotating platform of a tower crane is proposed. Summary of the invention

[0003] The object of the present invention is to provide a jacking mechanism and method for a rotating platform of a tower batching crane, which are used to jack up the rotating platform and thus jack up the crane arm.

[0004] To achieve the above-mentioned object, the present invention provides a jacking mechanism for a rotating platform of a tower type material placing boom, comprising a jacking frame and a jacking assembly, wherein the jacking frame is used to be installed on the rotating platform, the rotating platform is provided with a first channel and a second channel, the jacking assembly is installed in the jacking frame, and the jacking assembly is located above the first channel; the jacking assembly is used to push down a tower located in the first channel to jack up the rotating platform and the jacking frame; The lifting frame also includes a track beam, and the two track beams are respectively installed transversely on the guide slot columns on both sides, and the guide slot columns are provided with avoidance gaps at the intersections with the track beams; a lifting trolley is installed on the track beam, and the lifting trolley can move back and forth above the second channel and the first channel.

[0005] The position where the jacking assembly is installed on the jacking frame can be adjusted up and down.

[0006] The jacking frame includes guide groove columns, two guide groove columns are longitudinally arranged, and the grooves are relatively installed on both sides above the first channel, and a plurality of positioning holes are arranged on the guide groove columns along the height direction. The jacking assembly includes two jacking cylinders, and a limiting block is arranged at the cylinder end of the jacking cylinder, and a limiting hole is arranged on the limiting block. The two jacking cylinders are movably installed in the grooves of the guide groove columns on both sides, and the piston rod ends of the jacking cylinders face downwards. In the use state, the jacking cylinder is connected to the guide groove column by passing a pin through the limiting hole and one of the positioning holes.

[0007] The lifting assembly also includes a balance beam, which is detachably mounted on the piston rod ends of the two lifting oil cylinders; the two ends of the balance beam are respectively slidably mounted in the notches of the guide slot columns on both sides.

[0008] The jacking assembly also includes an extension frame, which is detachably mounted on the lower side of the balance beam.

[0009] On the guide groove column, plug-in and pull-out pin mechanisms are respectively installed at the positions corresponding to the positioning holes, and the plug-in and pull-out pin mechanisms include a support seat and a plug-in and pull-out cylinder. The support seat is fixedly connected to the guide groove column, and the plug-in and pull-out cylinder is fixedly installed on the support seat. The piston rod end of each plug-in and pull-out cylinder is installed with the plug, and the support seat is installed with a guide ring at the position of the plug, and the plug slides through the guide ring.

[0010] The guide groove column includes a lower column, an upper column and a connector. The upper column is installed above the lower column with a spacing through the connector. Grooves are respectively provided on the opposite sides of the connector. The grooves form the avoidance gaps, and the track beam is installed in the grooves of the connector. The lifting frame also includes a main frame, and the guide groove column and the track beam are both connected to the main frame. The main frame is located on the upper side of the track beam, and a first extension frame is provided at one end, and a second extension frame is provided at the other end. The top of the first extension frame is fixedly connected to a connecting plate, and the top of the second extension frame is connected to the connecting plate.

[0011] The rotating platform includes a first rotating body and a second rotating body, the first channel is located on the first rotating body, the second channel is located on the second rotating body, a protruding first connecting seat is provided on one side of the first rotating body, a protruding second connecting seat is provided on one side of the second rotating body, and the first connecting seat and the second rotating body are fixed by a pin shaft or a bolt connection; a first hinged seat is provided on the side of the first rotating body opposite to the first connecting seat, and a second hinged seat is provided on the side of the second rotating body opposite to the second connecting seat, and a plurality of mounting seats are installed on the upper sides of the first rotating body and the second rotating body, and the mounting seats are used for a detachable mounting lifting frame.

[0012] A method for lifting a rotating platform of a tower-type concrete placing boom adopts the lifting mechanism of the rotating platform of the tower-type concrete placing boom, and the lifting method comprises the following steps: S1, the rotating platform is sleeved on the tower through the first channel, and a locking mechanism is installed on the lower side of the rotating platform located at the first channel; S2. Lifting the tower section: The hook of the lifting trolley passes through the second channel to lift the tower section on the ground. After the tower section passes through the second channel, it is lifted to the top of the rotating platform; S3. Translation of tower section: The lifting trolley moves toward the first channel and aligns the tower section with the top of the tower; S4. Fix the tower section: fix the tower section and the tower with bolts; S5. Jacking operation: The jacking assembly pushes downward, and the lower end of the jacking assembly abuts against the top of the tower section. At this time, the locking mechanism and the tower are unlocked. In the process of further pushing the jacking assembly, the rotating platform and the jacking frame are lifted by the reaction force. After one jacking stroke, the locking mechanism and the tower are locked. Among them, if the required jacking height is greater than one stroke of the jacking assembly, the position of the jacking assembly is moved downward to adjust, and jacking is performed again.

[0013] Compared with the prior art, the present invention has the following technical effects: 1. The present invention is capable of lifting the tower section on the ground by providing a track beam and installing a lifting trolley on the track beam. When the present invention is used for jacking, the rotating platform is sleeved on the tower through the first channel, the lower end of the tower is fixedly mounted on the ground concrete foundation, and the rotating platform is installed with a locking mechanism on the lower side of the first channel. When the piston rods of the two jacking cylinders of the jacking assembly extend downward synchronously, the piston rods abut against the top of the tower, and the locking mechanism and the tower are released. In the process of further extending the piston rod of the jacking cylinder, the rotating platform and the jacking frame are lifted by the reaction force.

[0014] 2. The position of the jacking assembly of the present invention installed on the jacking frame can be adjusted up and down, thereby reducing the length of the jacking cylinder and the height of the entire jacking frame.

[0015] 3. The two ends of the balance beam of the present invention are respectively slidably installed in the notches of the guide slot columns on both sides, so that the balance beam can balance and press down the tower tube, thereby improving the stability of the jacking. By setting the extension frame, the downward travel of the jacking assembly is increased, and the number of height adjustment times of the jacking assembly is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0017] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0018] Figure 2 It is a right view structural schematic diagram of the present invention.

[0019] Figure 3 for Figure 1 Schematic diagram of the AA section structure.

[0020] Figure 4 The present invention is a schematic structural diagram of installing a jacking assembly between two guide slot columns.

[0021] Figure 5for Figure 4 Schematic diagram of the structure of the BB section.

[0022] Figure 6 It is a schematic structural diagram of two guide groove columns of the present invention.

[0023] Figure 7 It is a schematic structural diagram of the jacking assembly of the present invention.

[0024] Figure 8 It is a structural schematic diagram of the pin insertion and extraction mechanism of the present invention.

[0025] Fig. 9 It is a structural schematic diagram of the rotating platform of the present invention.

[0026] Fig.10 It is a schematic diagram of the top view of the rotating platform of the present invention.

[0027] Reference numerals Tower section 1; Rotating platform 100, first articulated seat 101, second articulated seat 102, mounting seat 103, first rotating body 110, first channel 111, first connecting seat 112, second rotating body 120, second channel 121, second connecting seat 122; Lifting frame 200, main frame 210, first extension frame 220, connecting plate 230, guide column 240, lower column 241, upper column 242, connecting piece 243, avoidance gap 244, positioning hole 245, second extension frame 250, track beam 260; Lifting trolley 300; Pin insertion and extraction mechanism 400, support seat 410, plug-in and extraction cylinder 420, latch pin 430, guide ring 440; Lifting assembly 500, balance beam 510, connecting ear seat 511, lifting ring 512, lifting cylinder 520, limiting block 521, limiting hole 522, extension frame 530, connecting bolt 531; Locking mechanism 600. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0029] Embodiment 1: See also Figure 1-10A jacking mechanism for a rotating platform of a tower type concrete placing boom comprises a jacking frame 200 and a jacking assembly 500. The jacking frame 200 is used to be installed on a rotating platform 100. The rotating platform 100 is provided with a first channel 111 and a second channel 121. The jacking assembly 500 is installed in the jacking frame 200, and the jacking assembly 500 is located above the first channel 111. The jacking assembly 500 is used to push down a tower located in the first channel 111 to jack up the rotating platform 100 and the jacking frame 200.

[0030] The lifting frame 200 also includes a track beam 260, and two track beams 260 are respectively installed horizontally on the guide slot columns 240 on both sides. The guide slot columns 240 are provided with avoidance gaps 244 at the intersections with the track beams 260; a lifting trolley 300 is installed on the track beam 260, and the lifting trolley 300 can move back and forth above the second channel 121 and the first channel 111.

[0031] In this embodiment, the lifting frame 200 includes a guide slot column 240 . Two guide slot columns 240 are longitudinally arranged, and the slots are respectively installed on both sides above the first channel 111 with relative notches. Positioning holes 245 are arranged on the guide slot columns 240 .

[0032] The lifting assembly 500 includes two lifting cylinders 520. A limit block 521 is provided at the cylinder end of the lifting cylinder 520. A limit hole 522 is provided on the limit block 521. The two lifting cylinders 520 are movably installed in the notches of the guide slot columns 240 on both sides, and the piston rod ends of the lifting cylinders 520 face downward. The latch 430 passes through the limit hole 522 and the positioning hole 245 to connect the lifting cylinder 520 with the guide slot column 240.

[0033] When working during lifting, see Figure 1 The rotating platform 100 is mounted on the tower through the first passage 111 , and the lower end of the tower is fixed to the ground concrete foundation. The rotating platform 100 is provided with a locking mechanism 600 at the lower side of the first passage 111 .

[0034] When the piston rods of the two lifting cylinders 520 extend downward synchronously, the piston rods abut against the top of the tower, and the locking mechanism 600 and the tower are unlocked. In the process of further extending the piston rods of the lifting cylinders 520, the rotating platform 100 and the lifting frame 200 are lifted by the reaction force. After being lifted into place, the locking mechanism 600 is locked with the tower.

[0035] In this embodiment, see Figure 1 , 23. The lifting frame 200 further includes a main frame 210, and the guide slot column 240 and the track beam 260 are both connected to the main frame 210. The main frame 210 is located on the upper side of the track beam 260, and is provided with a first extension frame 220 at one end and a second extension frame 250 at the other end. The top of the first extension frame 220 is fixedly connected with a connecting plate 230, and the top of the second extension frame 250 is connected to the connecting plate 230. The connecting plate 230 is used to install the pull rod for pulling the lifting arm and the balance arm.

[0036] See also Fig. 9 , 10 The rotating platform 100 includes a first rotating body 110 and a second rotating body 120. The first channel 111 is located on the first rotating body 110, and the second channel 121 is located on the second rotating body 120. A first connecting seat 112 is provided on one side of the first rotating body 110, and a second connecting seat 122 is provided on one side of the second rotating body 120. The first connecting seat 112 is fixed to the second rotating body 120 by a pin or a bolt. A first articulated seat 101 is provided on one side of the first rotating body 110 relative to the first connecting seat 112. The first articulated seat 101 is used to install a lifting arm. A second articulated seat 102 is provided on one side of the second rotating body 120 relative to the second connecting seat 122. The second articulated seat 102 is used to install a balancing arm. A plurality of mounting seats 103 are installed on the upper sides of the first rotating body 110 and the second rotating body 120. The mounting seats 103 are used to detachably install the lifting frame 200.

[0037] Embodiment 2: In this embodiment, a jacking mechanism for a rotating platform of a tower batching crane includes a jacking frame 200 and a jacking assembly 500. The jacking frame 200 is used to be installed on a rotating platform 100. The rotating platform 100 is provided with a first channel 111 and a second channel 121. The jacking assembly 500 is installed in the jacking frame 200, and the jacking assembly 500 is located above the first channel 111. The jacking assembly 500 is used to push down the tower section 1 located in the first channel 111 to jack up the rotating platform 100 and the jacking frame 200.

[0038] The position of the jacking assembly 500 installed on the jacking frame 200 can be adjusted up and down, so as to reduce the length of the jacking cylinder 520 and the height of the entire jacking frame 200.

[0039] Specifically, see Figure 3-7 The lifting frame 200 includes a guide slot column 240, two guide slot columns 240 are longitudinally arranged, and the slots are respectively installed on both sides above the first channel 111, and a plurality of positioning holes 245 are arranged on the guide slot column 240 along the height direction.

[0040] The lifting assembly 500 includes two lifting cylinders 520, and a limit block 521 is provided at the cylinder end of the lifting cylinder 520, and a limit hole 522 is provided on the limit block 521. The two lifting cylinders 520 are movably installed in the notches of the guide slot columns 240 on both sides, and the piston rod ends of the lifting cylinders 520 face downward. In the use state, the lifting cylinder 520 is connected to the guide slot column 240 by passing the latch 430 through the limit hole 522 and one of the positioning holes 245.

[0041] By inserting the latch pin 430 into the positioning holes 245 at different heights, the lifting cylinder 520 is installed at different heights of the guide groove column 240.

[0042] When the lifting operation starts, refer to Figure 1 , the tower located on the upper side of the rotating platform 100 is higher. At this time, the lifting assembly 500 is installed at the upper end of the guide slot column 240. The lifting height of the lifting assembly 500 each time is the stroke length of the lifting cylinder 520. When the rotating platform 100 is lifted by a stroke length, the tower located on the upper side of the rotating platform 100 is reduced by a stroke length. After that, the lifting assembly 500 is installed at the position of the guide slot column 240 to reduce a stroke length, thereby gradually lifting the rotating platform 100 in multiple times.

[0043] Embodiment 3: Based on Example 1 or Example 2, see Figure 7 The lifting assembly 500 also includes a balance beam 510, which is detachably mounted on the piston rod ends of the two lifting cylinders 520; the two ends of the balance beam 510 are respectively slidably mounted in the grooves of the guide column 240 on both sides.

[0044] The two ends of the balance beam 510 are respectively slidably installed in the notches of the guide slot columns 240 on both sides, so that the balance beam 510 can press down the tower in a balanced manner, thereby improving the stability of the jacking.

[0045] In this embodiment, see Figure 7 The top two sides of the balance beam 510 are respectively fixedly connected with connecting ear seats 511, and the piston rod end of the lifting oil cylinder 520 is fixedly installed with earrings, and the connecting ear seats 511 and the earrings are detachably connected through a pin shaft, so as to facilitate the installation and removal of the balance beam 510.

[0046] Furthermore, the lifting assembly 500 further includes an extension frame 530, which is detachably mounted on the lower side of the balance beam 510. By providing the extension frame 530, the downward movement stroke of the lifting assembly 500 is increased, and the number of height adjustment times of the lifting assembly 500 is reduced.

[0047] Specifically, a flange ring is fixedly provided on the inner wall of the top of the tower, and the bottom of the extension frame 530 can be connected and fixed to the flange ring on the top of the tower by connecting bolts 531 .

[0048] In this embodiment, connecting ear seats are fixedly connected to both sides of the bottom of the balance beam 510, and earrings are fixedly connected to the top of the extension frame 530. The connecting ear seats and the earrings are detachably connected via a pin.

[0049] After the lifting cylinder 520 lifts to a certain height, the locking mechanism 600 is locked with the tower, and then the piston rod of the lifting cylinder 520 is retracted, and the extension frame 530 is installed on the lower side of the balance beam 510, and the lifting operation steps can be performed again.

[0050] Embodiment 4: On the basis of Example 2 or Example 3, the latch pin 430 is inserted to facilitate height adjustment of the lifting cylinder 520 .

[0051] See also Figure 1 , 3 8. On the guide groove column 240, plug-in and pull-out pin mechanisms 400 are respectively installed at positions corresponding to the positioning holes 245.

[0052] Specifically, the plug-in pin mechanism 400 includes a support seat 410 and a plug-in cylinder 420. The support seat 410 is fixedly connected to the guide slot column 240. The plug-in cylinder 420 is fixedly installed on the support seat 410. A plug-in pin 430 is installed at the piston rod end of each plug-in cylinder 420. The support seat 410 is provided with a guide ring 440 at the position of the plug-in pin 430. The plug-in cylinder 420 is used to control the extension and retraction of the plug-in pin 430, and the guide ring 440 is used to guide the plug-in pin 430.

[0053] During installation, the support seat 410 and the guide groove column 240 are fixed by welding or bolt connection, and the mounting seat on the plug-in oil cylinder 420 is fixed on the support seat 410 by bolts. The piston rod end of the plug-in oil cylinder 420 is screwed and fixed with one end of the plug pin 430, and the other end of the plug pin 430 is a cone head. When the limit hole 522 is aligned with the positioning hole 245, the piston rod end of the plug-in oil cylinder 420 is extended to insert the plug pin 430 into the corresponding limit hole 522 and positioning hole 245.

[0054] Embodiment 5: Based on Example 1 or 2 or 3 or 4, see Figure 1 , 3 6. The lifting frame 200 further includes a track beam 260. Two track beams 260 are transversely mounted on the guide slot columns 240 on both sides. The guide slot columns 240 are provided with avoidance notches 244 at the intersections with the track beams 260. The track beams 260 are used to mount a lifting trolley 300. By providing the track beams 260 and mounting the lifting trolley 300 on the track beams 260, the tower section 1 on the ground can be lifted.

[0055] Specifically, the lifting trolley 300 can adopt the lifting trolley structure of the bridge crane. Figure 1 and Fig.10 The tower section 1 passes through the second passage 121 and is hoisted above the rotating platform 100. Afterwards, the lifting trolley 300 moves to the first passage 111 and aligns the tower section 1 at the top of the tower.

[0056] See also Figure 6 By setting the avoidance gap 244, the movement of the lifting trolley 300 on the track beam 260 will not be affected. In addition, the track beam 260 will not interfere with the jacking assembly 500, so that the jacking assembly 500 can move up and down along the guide groove column 240 to adjust the position.

[0057] Specifically, see Figure 6 The guide groove column 240 includes a lower column 241, an upper column 242 and a connecting piece 243. The upper column 242 is installed above the lower column 241 through the connecting piece 243. Grooves are respectively provided on the opposite sides of the connecting pieces 243, and the grooves form avoidance gaps 244. The track beam 260 is installed in the grooves of the connecting pieces 243. Of course, in order to prevent the balance beam 510 from causing interference when the lifting trolley 300 lifts the tower section 1 and moves it toward the first channel 111, the balance beam 510 can be first removed by the lifting trolley 300, and then the balance beam 510 can be reinstalled after the tower section 1 and the tower are installed.

[0058] The method or principle of use of the present invention: See also Figure 1 The rotating platform 100 is mounted on the tower through the first passage 111 , and the lower end of the tower is fixed to the ground concrete foundation. The rotating platform 100 is provided with a locking mechanism 600 at the lower side of the first passage 111 .

[0059] Before the jacking operation, the tower section 1 is lifted by the lifting trolley 300, and the tower section 1 passes through the second passage 121, and is lifted above the rotating platform 100. After that, the lifting trolley 300 moves to the side of the first passage 111, aligns the tower section 1 on the top of the tower, and then fixes the tower section 1 to the tower with bolts.

[0060] Afterwards, the piston rods of the two lifting cylinders 520 extend downward synchronously, and the balance beam 510 abuts against the top of the tower, and the locking mechanism 600 and the tower are unlocked. In the process of further extending the piston rods of the lifting cylinders 520, the rotating platform 100 and the lifting frame 200 are lifted by the reaction force. After one lifting stroke, the locking mechanism 600 is locked with the tower.

[0061] Afterwards, the pin 430 connecting the lifting cylinder 520 and the guide groove column 240 is removed, the piston rod of the lifting cylinder 520 is retracted, and the cylinder body of the lifting cylinder 520 is along the lower side of the guide groove column 240. Then, the lifting cylinder 520 and the guide groove column 240 are fixed by the pin 430 to carry out the next lifting stroke.

Claims

1. A tower type material placing boom rotating platform lifting mechanism, characterized in that: The invention comprises a jacking frame (200) and a jacking assembly (500), wherein the jacking frame (200) is used for being installed on a rotating platform (100), wherein the rotating platform (100) is provided with a first channel (111) and a second channel (121), and the jacking assembly (500) is installed in the jacking frame (200), and the jacking assembly (500) is located above the first channel (111); the jacking assembly (500) is used for pushing down a tower located in the first channel (111) to jack up the rotating platform (100) and the jacking frame (200); The lifting frame (200) further comprises a track beam (260), wherein two track beams (260) are respectively installed transversely on the guide slot columns (240) on both sides, and the guide slot columns (240) are provided with avoidance gaps (244) at the intersections with the track beams (260); a lifting trolley (300) is installed on the track beam (260), and the lifting trolley (300) can move back and forth above the second channel (121) and the first channel (111).

2. The jacking mechanism of the rotating platform of the tower type material placing boom according to claim 1 is characterized in that: The position at which the jacking assembly (500) is installed on the jacking frame (200) can be adjusted up and down.

3. The jacking mechanism of the rotating platform of the tower type material placing boom according to claim 2 is characterized in that: The jacking frame (200) comprises a guide slot column (240), wherein two guide slot columns (240) are arranged longitudinally, and the slots are installed on the upper sides of the first channel (111) in a relative manner, and a plurality of positioning holes (245) are arranged on the guide slot column (240) along the height direction. The jacking assembly (500) comprises two jacking cylinders (520), and a limit block (521) is arranged at the cylinder end of the jacking cylinder (520), and a limit hole (522) is arranged on the limit block (521). The two jacking cylinders (520) are movably installed in the slots of the guide slot columns (240) on both sides, and the piston rod ends of the jacking cylinders (520) face downwards. In a use state, the jacking cylinder (520) is connected to the guide slot column (240) by a latch (430) passing through the limit hole (522) and one of the positioning holes (245).

4. The jacking mechanism of the rotating platform of the tower type material placing boom according to claim 3 is characterized in that: The lifting assembly (500) further comprises a balance beam (510), which is detachably mounted on the piston rod ends of the two lifting cylinders (520); the two ends of the balance beam (510) are respectively slidably mounted in the grooves of the guide column (240) on both sides.

5. The jacking mechanism of the rotating platform of the tower type material placing boom according to claim 4 is characterized in that: The lifting assembly (500) further comprises an extension frame (530), wherein the extension frame (530) is detachably mounted on the lower side of the balance beam (510).

6. The jacking mechanism of the rotating platform of the tower type material placing boom according to claim 3 is characterized in that: On the guide groove column (240), plug-in and pull-out pin mechanisms (400) are respectively installed at positions corresponding to the positioning holes (245). The plug-in and pull-out pin mechanisms (400) comprise a support seat (410) and a plug-in and pull-out oil cylinder (420). The support seat (410) is fixedly connected to the guide groove column (240), and the plug-in and pull-out oil cylinder (420) is fixedly installed on the support seat (410). The piston rod end of each plug-in and pull-out oil cylinder (420) is installed with the plug pin (430). The support seat (410) is installed with a guide ring (440) at a position located at the plug pin (430), and the plug pin (430) slides through the guide ring (440).

7. The jacking mechanism of the rotating platform of the tower type material placing boom according to claim 1 is characterized in that: The guide groove column (240) comprises a lower column (241), an upper column (242) and a connecting piece (243); the upper column (242) is installed above the lower column (241) via the connecting piece (243) at intervals; grooves are respectively provided on opposite sides of the connecting pieces (243); the grooves form the avoidance gaps (244); and the track beam (260) is installed in the grooves of the connecting pieces (243).

8. The jacking mechanism of the rotating platform of the tower type material placing boom according to claim 1 is characterized in that: The lifting frame (200) further comprises a main frame (210), the guide slot column (240) and the track beam (260) are both connected to the main frame (210), the main frame (210) is located on the upper side of the track beam (260), one end of the main frame (210) is provided with a first extension frame (220), and the other end of the main frame (250) is provided with a second extension frame (250), the top of the first extension frame (220) is fixedly connected to a connecting plate (230), and the top of the second extension frame (250) is connected to the connecting plate (230).

9. The jacking mechanism of the rotating platform of the tower type material placing boom according to claim 1 is characterized in that: The rotating platform (100) comprises a first rotating body (110) and a second rotating body (120); a first channel (111) is located on the first rotating body (110); a second channel (121) is located on the second rotating body (120); a first connecting seat (112) extending out is provided on one side of the first rotating body (110); a second connecting seat (122) extending out is provided on one side of the second rotating body (120); the first connecting seat (112) and the second rotating body (120) are connected and fixed by a pin or a bolt; a first hinged seat (101) is provided on one side of the first rotating body (110) opposite to the first connecting seat (112); a second hinged seat (102) is provided on one side of the second rotating body (120) opposite to the second connecting seat (122); a plurality of mounting seats (103) are installed on the upper sides of the first rotating body (110) and the second rotating body (120); the mounting seats (103) are used for detachably mounting a lifting frame (200).

10. A method for lifting a rotating platform of a tower type concrete placing boom, characterized in that: The jacking mechanism for the rotating platform of a tower batching crane according to any one of claims 1 to 9 is adopted, and the jacking method comprises the following steps: S1. The rotating platform (100) is mounted on the tower through the first channel (111), and a locking mechanism (600) is installed on the lower side of the rotating platform (100) located at the first channel (111); S2, lifting the tower section (1): the hook of the lifting trolley (300) passes through the second passage (121) to lift the tower section (1) on the ground. After the tower section (1) passes through the second passage (121), it is lifted to the top of the rotating platform (100); S3, translating the tower section (1): the lifting trolley (300) moves toward the first passage (111) to align the tower section (1) with the top of the tower; S4, fixing the tower section (1): fixing the tower section (1) to the tower by bolts; S5, jacking operation: the jacking assembly (500) is pushed downward, and the lower end of the jacking assembly (500) is abutted against the top of the tower section (1). At this time, the locking mechanism (600) and the tower are released. During the further pushing process of the jacking assembly (500), the rotating platform (100) and the jacking frame (200) are lifted by the reaction force. After one jacking stroke, the locking mechanism (600) and the tower are locked. If the required jacking height is greater than one stroke of the jacking assembly (500), the position of the jacking assembly (500) is moved downward to adjust and jacking is performed again.

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