Auxiliary leveling device for embedded section of tower crane

Abstract

The tower crane embedded section auxiliary leveling device comprises a bottom plate, a sleeve, a nut and a screw rod, the sleeve is fixed to the top of the bottom plate, the nut is fixed to the top of the sleeve, the screw rod is arranged in the sleeve, the screw rod and the nut are installed in a threaded mode, and the top of the screw rod protrudes out of the top of the nut; by arranging the adjustable screw rod, the embedded section is rapidly adjusted to be horizontal by rotating the screw rod, the problem that time and labor are wasted in existing embedded section leveling work is solved, and the occupied time of hoisting machinery is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of tower crane installation, in particular to the technical field of tower crane pre-embedded section auxiliary leveling device. Background Art

[0002] The embedded section of the tower crane is located at the connection between the tower body and the foundation. It bears a very large load and is a key part related to the safety of the tower crane. Manufacturers have taken special strengthening measures during the design and production process. The national standard stipulates that the embedded section can only be used once and cannot be reused; therefore, the fixed base frame structure of the embedded section can well meet the safety requirements of the tower crane and is widely used at construction sites.

[0003] However, the fixed base structure of the embedded section has high requirements for the horizontality control of the embedded section, requiring the horizontality of the four main limb end surfaces of the embedded section to be controlled within 1 / 1000; due to the large size and heavy weight of the embedded section, the mobile lifting requires the help of lifting machinery, the environmental conditions at the embedded construction site are poor, and the influence of the later steel bar binding and concrete pouring, it is not easy to achieve millimeter-level control of the horizontality of the four main limb end surfaces of the embedded section; in the construction process of the tower crane embedded section, the traditional construction method not only requires the embedded section to be installed in place by lifting machinery, but also the adjustment of the water level of the embedded section also requires lifting machinery to cooperate with manual leveling, and the adjustment process is time-consuming. Most engineering projects have high requirements and tight construction period for foundation construction. The early or late time of tower crane investment directly affects other construction operations, and the current market machinery and labor costs are relatively high. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art and to provide a tower crane pre-embedded section auxiliary leveling device that can solve the above problems.

[0005] To achieve the above-mentioned purpose, the present invention proposes an auxiliary leveling device for the embedded section of a tower crane, comprising a base plate, a sleeve, a nut and a screw, wherein a sleeve is fixed to the top of the base plate, a nut is fixed to the top of the sleeve, a screw is arranged in the sleeve, the screw is threadedly installed with the nut, and the top of the screw protrudes from the top of the nut.

[0006] Preferably, the top of the screw rod abuts against the bottom of the main rib column of the tower crane embedded section.

[0007] Preferably, the working method of the tower crane pre-embedded section auxiliary leveling device comprises the following steps: S1. Prepare four auxiliary leveling devices and place them at corresponding positions, wherein three of the auxiliary leveling devices are adjusted to theoretical heights, and the remaining auxiliary leveling device is adjusted to the lowest height; S2. Hoist the embedded section above the four auxiliary leveling devices, and support the embedded section through the three auxiliary leveling devices; S3. Turn the screws of the three auxiliary leveling devices to adjust the level of the embedded section to the required level; S4. Raise the remaining auxiliary leveling device so that the screw rod is pressed tightly against the bottom of the main rib column of the embedded section to complete the leveling operation.

[0008] Preferably, a support block is rotatably mounted on the top of the screw rod, and a non-slip surface is provided on the top of the support block.

[0009] Preferably, the diameter of the screw is 20 mm.

[0010] Preferably, the screw is driven to rotate by a driving device.

[0011] Preferably, the driving device includes a mounting frame, on which a first transmission rod is rotatably mounted, a first worm is provided on the first transmission rod, a spliced ​​worm wheel is meshed with a side of the first worm near the screw, a plurality of fixing grooves are provided on an outer wall ring on a side of the screw near the bottom, fastening grooves are provided on both sides of an inner wall of the spliced ​​worm wheel, a fixing rod matching the fixing groove is slidably provided in the fastening groove, a driving rod is provided on the fixing rod, a movable groove for moving the driving rod is provided on the spliced ​​worm wheel, the driving rod protrudes from the top of the spliced ​​worm wheel, and a positioning block is slidably provided on the driving rod. A positioning groove matching the positioning block is provided on the top of the spliced ​​worm wheel, and the spliced ​​worm wheel is composed of two half worm wheels spliced ​​together, and the two half worm wheels are fixed by splicing bolts. A splicing nut is connected to the bottom of the splicing bolt, and a slider is provided at the bottom of the splicing nut. A splicing ring is provided under the spliced ​​worm wheel, and the splicing ring is composed of two spliced ​​arc plates spliced ​​together, and the two spliced ​​arc plates are fixed by connecting bolts, one of the spliced ​​arc plates is fixed on the mounting frame, and an annular slide groove is provided on the upper surface of the splicing ring, and the slider is slidably installed in the annular slide groove, and the splicing nut is protrudingly arranged on the splicing ring.

[0012] Preferably, a first vertical rod is rotatably mounted on the mounting frame, a second worm is provided on the first vertical rod, a second worm wheel is fixed on the first transmission rod, the second worm wheel is meshed with the second worm wheel, a first rotating handle is provided on the top of the first vertical rod, a support plate is provided on the side of the mounting frame away from the screw rod, a second vertical rod is rotatably mounted on the top of the support plate, a threaded section is provided on the second vertical rod, a lifting block is provided on the side of the mounting frame close to the second vertical rod, a threaded hole is provided on the lifting block, the threaded hole is threadedly mounted with the threaded section, a second rotating handle is provided on the top of the second vertical rod, a first driving gear is provided on the first vertical rod, a second driving gear is provided on the second vertical rod, and the first driving gear is meshed with the second driving gear.

[0013] The beneficial effects of the present invention are as follows: the present invention provides an adjustable screw rod, which can quickly adjust the embedded section to a horizontal position by rotating the screw rod, thereby solving the problem that the existing leveling work of the embedded section is time-consuming and labor-intensive, and reducing the time occupied by the lifting machinery; by providing a support block, the upgrading of the embedded section is more stable and slippage is reduced when the screw rod is rotated for adjustment; by providing a driving device, the bottom adjustment method is converted into side adjustment, thereby reducing the operating burden of the staff, eliminating the need to repeatedly lower the body for adjustment, and reducing the time occupied by the entire horizontal adjustment process.

[0014] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is the installation schematic diagram of the present invention; Figure 3 is a schematic diagram of a support block of the present invention; Figure 4 is a schematic diagram of a driving device of the present invention; Figure 5 is a schematic diagram of the installation of the first worm of the present invention; Figure 6 is a schematic diagram of a half worm gear of the present invention; Figure 7 is a schematic diagram of a splicing ring of the present invention; Figure 8 is a schematic diagram of a spliced ​​worm gear of the present invention; Fig. 9 It is a schematic diagram of the installation of the fixing rod of the present invention.

[0016] In the figure: 1, base plate; 2, sleeve; 3, nut; 4, screw; 5, support block; 6, mounting frame; 7, splicing worm gear; 8, splicing ring; 9, first vertical rod; 10, support plate; 41, fixing groove; 61, first transmission rod; 62, first worm; 63, lifting block; 64, second rotating handle; 65, first driving gear; 66, second driving gear; 71, fastening groove; 72, fixing rod; 73, driving rod; 74, movable groove; 75, positioning block; 76, positioning groove; 77, splicing nut; 78, slider; 81, annular slide groove; 91, second worm; 92, second worm gear; 94, first rotating handle; 95, second vertical rod. DETAILED DESCRIPTION

[0017] Example 1 See also Figure 1 to Figure 2The tower crane embedded section auxiliary leveling device includes a base plate 1, a sleeve 2, a nut 3 and a screw 4. The top of the base plate 1 is fixed with a sleeve 2, the top of the sleeve 2 is fixed with a nut 3, a screw 4 is arranged in the sleeve 2, the screw 4 is threadedly installed with the nut 3, the top of the screw 4 protrudes from the top of the nut 3, and the diameter of the screw 4 is 20 mm.

[0018] The top of the screw rod 4 abuts against the bottom of the main rib column of the tower crane embedded section.

[0019] The working method of the tower crane pre-embedded section auxiliary leveling device comprises the following steps: S1. Prepare four auxiliary leveling devices and place them at corresponding positions, wherein three of the auxiliary leveling devices are adjusted to theoretical heights, and the remaining auxiliary leveling device is adjusted to the lowest height; S2. Hoist the embedded section above the four auxiliary leveling devices, and support the embedded section through the three auxiliary leveling devices; S3, rotate the screws 4 of the three auxiliary leveling devices to adjust the level of the embedded section to the required level; S4. Raise the remaining auxiliary leveling device so that the screw rod 4 is pressed against the bottom of the main rib column of the embedded section to complete the leveling operation.

[0020] After leveling is completed, the screw rods are welded and fixed to the embedded joints, and finally concrete is poured.

[0021] Example 2 See also Figure 3 A support block 5 is rotatably mounted on the top of the screw rod 4, and a non-slip surface is provided on the top of the support block 5.

[0022] The rest is the same as in Example 1.

[0023] Example 3 See also Figures 4 to 9 , the screw rod 4 is driven to rotate by a driving device.

[0024] The rest is the same as in Example 1.

[0025] The driving device includes a mounting frame 6, on which a first transmission rod 61 is rotatably mounted, on which a first worm 62 is provided, and a spliced ​​worm wheel 7 is meshed with the first worm 62 on the side close to the screw rod 4, and a plurality of fixing grooves 41 are arranged on the outer wall of the screw rod 4 on the side close to the bottom, and fastening grooves 71 are provided on both sides of the inner wall of the spliced ​​worm wheel 7, and a fixing rod 72 matching the fixing groove 41 is slidably arranged in the fastening groove 71, and a driving rod 73 is provided on the fixing rod 72, and a movable groove 74 for the driving rod 73 to move is provided on the spliced ​​worm wheel 7, and the driving rod 73 is protruding from the top of the spliced ​​worm wheel 7, and a fixing groove 71 is slidably arranged on the driving rod 73. A positioning block 75 is provided on the top of the spliced ​​worm gear 7, and a positioning groove 76 matching the positioning block 75 is provided. The spliced ​​worm gear 7 is composed of two half worm gears spliced ​​together, and the two half worm gears are fixed by splicing bolts. The bottom of the splicing bolts is connected with a splicing nut 77, and a slider 78 is provided at the bottom of the splicing nut 77. A splicing ring 8 is provided below the spliced ​​worm gear 7, and the splicing ring 8 is composed of two splicing arc plates spliced ​​together, and the two splicing arc plates are fixed by connecting bolts, one of which is fixed on the mounting frame 6. An annular slide groove 81 is provided on the upper surface of the splicing ring 8, and the slider 78 is slidably installed in the annular slide groove 81. The splicing nut 77 is protrudingly arranged on the splicing ring 8.

[0026] A first vertical rod 9 is rotatably mounted on the mounting frame 6, a second worm 91 is provided on the first vertical rod 9, a second worm wheel 92 is fixed on the first transmission rod 61, the second worm wheel 92 is meshed with the second worm 91, a first rotating handle 94 is provided on the top of the first vertical rod 9, a support plate 10 is provided on the side of the mounting frame 6 away from the screw rod 4, a second vertical rod 95 is rotatably mounted on the top of the support plate 10, a threaded section is provided on the second vertical rod 95, a lifting block 63 is provided on the side of the mounting frame 6 close to the second vertical rod 95, a threaded hole is provided on the lifting block 63, the threaded hole is threadedly mounted with the threaded section, a second rotating handle 64 is provided on the top of the second vertical rod 95, a first driving gear 65 is provided on the first vertical rod 9, a second driving gear 66 is provided on the second vertical rod 95, the first driving gear 65 is meshed with the second driving gear 66.

[0027] When assembling the leveling device, first assemble the spliced ​​worm gear on the outside of the screw rod, install the spliced ​​bolt into the spliced ​​nut on the spliced ​​ring, insert the fixing rod into the fixing groove of the screw rod, and snap the positioning block into the positioning groove to fix the screw rod and complete the assembly.

[0028] After the embedded section is leveled, first slide the fixing rod out, then remove the spliced ​​worm gear and spliced ​​ring, and then remove the drive device.

[0029] The second vertical rod can rotate synchronously with the screw rod of the device through each transmission assembly; the ratio setting of the first driving gear and the second gear can play a role of fine adjustment when the first rotating handle is rotated, making the adjustment more precise.

[0030] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A tower crane pre-embedded section auxiliary leveling device, characterized in that: The invention comprises a base plate (1), a sleeve (2), a nut (3) and a screw rod (4); the top of the base plate (1) is fixed with a sleeve (2); the top of the sleeve (2) is fixed with a nut (3); the sleeve (2) is provided with a screw rod (4); the screw rod (4) and the nut (3) are threadedly mounted; the top of the screw rod (4) protrudes from the top of the nut (3).

2. The tower crane pre-embedded section auxiliary leveling device according to claim 1, characterized in that: The top of the screw rod (4) abuts against the bottom of the main rib column of the tower crane embedded section.

3. The tower crane pre-embedded section auxiliary leveling device according to claim 1, characterized in that: The working method of the tower crane pre-embedded section auxiliary leveling device comprises the following steps: S1. Prepare four auxiliary leveling devices and place them at corresponding positions, wherein three of the auxiliary leveling devices are adjusted to theoretical heights, and the remaining auxiliary leveling device is adjusted to the lowest height; S2. Hoist the embedded section above the four auxiliary leveling devices, and support the embedded section through the three auxiliary leveling devices; S3, rotating the screws (4) of the three auxiliary leveling devices to adjust the level of the embedded section to the required level; S4. Raise the remaining auxiliary leveling device so that the screw rod (4) is pressed against the bottom of the main rib column of the embedded section to complete the leveling operation.

4. The tower crane pre-embedded section auxiliary leveling device according to claim 1, characterized in that: A support block (5) is rotatably mounted on the top of the screw rod (4), and a non-slip surface is provided on the top of the support block (5).

5. The tower crane pre-embedded section auxiliary leveling device according to claim 1, characterized in that: The diameter of the screw (4) is 20 mm.

6. The tower crane pre-embedded section auxiliary leveling device according to claim 1, characterized in that: The screw (4) is driven to rotate by a driving device.

7. The tower crane pre-embedded section auxiliary leveling device according to claim 6, characterized in that: The driving device comprises a mounting frame (6), a first transmission rod (61) being rotatably mounted on the mounting frame (6), a first worm (62) being provided on the first transmission rod (61), a spliced ​​worm wheel (7) being meshed with a spliced ​​worm wheel (7) on a side of the first worm (62) close to the screw rod (4), a plurality of fixing grooves (41) being provided on an outer wall of a side of the screw rod (4) close to the bottom, fastening grooves (71) being provided on both sides of an inner wall of the spliced ​​worm wheel (7), a fixing rod (72) matching the fixing groove (41) being slidably provided in the fastening groove (71), a driving rod (73) being provided on the fixing rod (72), a movable groove (74) for the driving rod (73) to move being provided on the spliced ​​worm wheel (7), the driving rod (73) being protruding from the top of the spliced ​​worm wheel (7), and the driving rod (73) being slidably provided on the inner wall of the spliced ​​worm wheel (7). A positioning block (75) is provided on the top of the spliced ​​worm wheel (7), and a positioning groove (76) matching the positioning block (75) is provided. The spliced ​​worm wheel (7) is composed of two half worm wheels spliced ​​together, and the two half worm wheels are fixed by splicing bolts. The bottom of the splicing bolts is connected with a splicing nut (77), and the bottom of the splicing nut (77) is provided with a slider (78). A splicing ring (8) is provided below the spliced ​​worm wheel (7), and the splicing ring (8) is composed of two splicing arc plates spliced ​​together, and the two splicing arc plates are fixed by connecting bolts, one of which is fixed on the mounting frame (6). An annular sliding groove (81) is provided on the upper surface of the splicing ring (8), and the slider (78) is slidably installed in the annular sliding groove (81). The splicing nut (77) is protrudingly arranged on the splicing ring (8).

8. The tower crane pre-embedded section auxiliary leveling device according to claim 7, characterized in that: A first vertical rod (9) is rotatably mounted on the mounting frame (6), a second worm gear (91) is provided on the first vertical rod (9), a second worm wheel (92) is fixed on the first transmission rod (61), the second worm wheel (92) meshes with the second worm gear (91), a first rotating handle (94) is provided on the top of the first vertical rod (9), a support plate (10) is provided on the side of the mounting frame (6) away from the screw rod (4), a second vertical rod (95) is rotatably mounted on the top of the support plate (10), the second vertical rod (95) is provided with a threaded section, a lifting block (63) is provided on the side of the mounting frame (6) close to the second vertical rod (95), a threaded hole is opened on the lifting block (63), the threaded hole is threadedly mounted with the threaded section, a second rotating handle (64) is provided on the top of the second vertical rod (95), a first driving gear (65) is provided on the first vertical rod (9), a second driving gear (66) is provided on the second vertical rod (95), the first driving gear (65) meshes with the second driving gear (66).

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