Tower crane slewing mechanism

Abstract

The utility model provides a slewing mechanism of a tower crane and relates to the technical field of tower cranes. The tower crane slewing mechanism comprises a tower body and a rotary table, the tower body is a tower frame, the top end of the rotary table is rotationally connected with a machine head, the machine head is a crane head (or a lifting machine head), inserting grooves distributed in a circumferential array mode are formed in the upper portion of the tower body, mortise grooves are formed in the inner walls of one sides of the inserting grooves, and the vertical sections of the mortise grooves are convex cavities. The outer side of the rotary table is fixedly sleeved with a mounting disc, tenon blocks distributed in a circumferential array mode are fixedly connected to the bottom of the mounting disc, and the vertical section of each tenon block is of a convex structure. According to the tower crane slewing mechanism, by arranging the tenon block and the mortise groove, when a crane head (or a lifting machine head) on the rotary table is installed, only the rotary table needs to be installed on the upper portion of the tower body, then the rotary table is rotated, the tenon block is inserted into the mortise groove, and the device is easy to operate and convenient to use, so that the disassembly and assembly convenience of the tower crane slewing mechanism can be effectively improved.

Description

Technical Field

[0001] The utility model relates to a tower crane slewing mechanism, in particular to a tower crane slewing mechanism, and belongs to the technical field of tower cranes. Background Art

[0002] Tower crane is also called tower crane. It is a rotating crane with the boom installed on the top of the towering tower. It has a large working space and is mainly used for vertical and horizontal transportation of materials and installation of building components in house construction. It consists of three parts: metal structure, working mechanism and electrical system. The metal structure includes the tower body, boom and base. The working mechanism has four parts: lifting, luffing, rotation and travel. The electrical system includes motors, controllers, distribution cabinets, connecting lines, signals and lighting devices, etc.

[0003] The slewing mechanism is one of the most important mechanisms on a tower crane. As construction sites require a larger and larger operating range for tower cranes, the requirements for the slewing mechanism of tower cranes are also increasing. A tower crane is divided into a tower and a crane head (or lifting head), and the crane head (or lifting head) is installed on the tower.

[0004] At present, the crane head (or lift head) is mainly fixed on the tower by bolts. In order to ensure the stability of the crane head (or lift head), a large number of bolts are needed, and the bolts are large in size and very difficult to twist manually, which makes the installation of the crane head (or lift head) very complicated and troublesome. The force between the crane head (or lift head) and the tower is exerted by bolts, which leads to low safety in the use of the crane head (or lift head). Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The purpose of the utility model is to provide a tower crane slewing mechanism in order to solve the above problems, so as to solve the problem that the crane head (or lifting head) in the current tower crane in the prior art is very troublesome to install.

[0007] (II) Technical solution

[0008] The utility model is realized through the following technical scheme: a tower crane slewing mechanism comprises a tower body and a turntable, the tower body is a tower frame, the top of the turntable is rotatably connected to a machine head, the machine head is a crane head (or a lifting head), the upper part of the tower body is provided with slots distributed in a circumferential array, a mortise is formed on an inner wall of one side of the slot, the vertical section of the mortise is a convex cavity, a mounting plate is fixedly sleeved on the outer side of the turntable, tenon blocks distributed in a circumferential array are fixedly connected to the bottom of the mounting plate, the vertical section of the tenon blocks is a convex structure, each of the tenon blocks is respectively plugged and connected with each slot, and the tenon block is matched with the mortise, the mortise, the slot and the tenon block are on the same circular orbit line, the upper part of the mounting plate is provided with through openings distributed in a circumferential array, each of the through openings is respectively staggered with each tenon block, a filling block matched with the slot is slidably connected in the through opening, and an adjusting component for adjusting the height of the filling block is arranged on the turntable.

[0009] Preferably, a slide groove slidably connected to the filling block is provided on the outer side of the turntable and at a corresponding position relative to each through opening, the slide groove is used to limit the self-rotation of the filling block, the adjustment component includes threaded rods distributed in a circular array, each of the threaded rods is fixedly connected to the upper part of each filling block, a threaded ring is threadedly sleeved on the outer side of the threaded rod, and a mounting frame distributed in a circular array is fixedly connected to the outer side of the turntable, and the mounting frame is slidably sleeved on the outer side of the threaded ring.

[0010] Preferably, an outer rotating sleeve of the turntable is provided with an outer gear ring, and an outer fixed sleeve of the threaded ring is provided with a gear ring plate, and the outer gear ring is meshingly connected with each gear ring plate.

[0011] Preferably, a turntable is rotatably connected at the center position of the top of the tower body, a block is fixedly connected at the eccentric center of the upper part of the turntable, and a block is fixedly connected at the eccentric center of the bottom of the turntable, the blocks are in contact with each other, and the blocks are on the same circular orbit line.

[0012] Preferably, a gear is rotatably connected to the mounting frame, and the gear is meshed with an outer gear ring. A servo motor is installed inside the tower body and on one side of the turntable. The movable ends of the two servo motors are respectively fixedly connected to one side of the gear and the bottom of the turntable. The servo motor used in this application is a purchased part, which is selected according to the power and size requirements, and this application will not go into details.

[0013] Preferably, the tenon block comprises a thick block and a thin block fixedly connected to each other, the upper portion of the thin block is fixedly connected to the bottom of the turntable, and the thick block is located below the thin block.

[0014] Preferably, the mortise includes a coarse groove and a thin groove which are interconnected, the coarse groove is located below the thin groove, and both the coarse groove and the thin groove are formed on an inner wall of one side of the slot, the coarse groove is adapted to the coarse block, and the thin groove is adapted to the thin block.

[0015] The utility model provides a tower crane slewing mechanism, which has the following beneficial effects:

[0016] 1. The slewing mechanism of the tower crane is provided with tenon blocks and mortise grooves. When installing the crane head (or lifting head) on the turntable, it is only necessary to install the turntable on the upper part of the tower body and then rotate the turntable so that the tenon blocks are inserted into the mortise grooves. The device is simple to operate and convenient to use, thereby effectively improving the convenience of disassembly and assembly of the slewing mechanism of the tower crane.

[0017] 2. The slewing mechanism of the tower crane is provided with tenons and mortises to use as filling blocks to fill the slots, thereby avoiding the installation of the crane head (or the lifting head) with fixing structures such as bolts, so that the staff does not need to tighten a large number of bolts, and the restrictions of the mortise and tenon and the filling block can effectively increase the force-bearing area of ​​the turntable, thereby improving the safety and stability of the installation of the crane head (or the lifting head). BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the utility model as a whole;

[0019] Figure 2 It is a three-dimensional schematic diagram of the cooperation between the turntable and the gear of the utility model;

[0020] Figure 3 It is a front three-dimensional schematic diagram of the turntable of the utility model;

[0021] Figure 4 It is a bottom-up stereoscopic schematic diagram of the turntable of the utility model;

[0022] Figure 5 It is a three-dimensional schematic diagram of the cooperation between the adjustment component and the outer gear ring of the utility model;

[0023] Figure 6 It is a three-dimensional schematic diagram of the tower body of the utility model;

[0024] Figure 7 It is a schematic diagram of the cross-sectional structure of the tower body of the utility model.

[0025] In the figure:

[0026] 1. Tower body; 2. Turntable; 3. Slot; 4. Mortise; 5. Tenon block; 6. Through port; 7. Filling block; 8. Slide; 9. Adjustment assembly; 901. Threaded rod; 902. Threaded ring; 10. External gear ring; 11. Turntable; 12. Block; 13. Stop block; 14. Gear; 15. Servo motor; 16. Mounting plate. DETAILED DESCRIPTION

[0027] The embodiment of the utility model provides a tower crane slewing mechanism.

[0028] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , including a tower body 1 and a turntable 2, the tower body 1 is a tower frame, the top of the turntable 2 is rotatably connected to a machine head, the machine head is a crane head (or a lifting machine head), the upper part of the tower body 1 is provided with slots 3 distributed in a circumferential array, a mortise 4 is formed on the inner wall of one side of the slot 3, the vertical section of the mortise 4 is a convex cavity, the outer side of the turntable 2 is fixedly sleeved with a mounting plate 16, the bottom of the mounting plate 16 is fixedly connected with tenons 5 distributed in a circumferential array, the vertical section of the tenon block 5 is a convex structure, each tenon block 5 is plugged and connected with each slot 3, and the tenon block 5 is adapted to the mortise 4, the mortise 4, the slot 3 and the tenon block 5 are on the same circular track line, the upper part of the mounting plate 16 is provided with through openings 6 distributed in a circumferential array, each through opening 6 is staggered with each tenon block 5, a filling block 7 adapted to the slot 3 is slidably connected in the through opening 6, and an adjusting component 9 for adjusting the height of the filling block 7 is provided on the turntable 2;

[0029] The turntable 2 is installed on the upper part of the tower body 1. At this time, the tenon block 5 on the turntable 2 is inserted into the corresponding slot 3, and then the turntable 2 is rotated so that the tenon block 5 slides from the slot 3 into the cavity of the mortise 4. Then, the filling block 7 is inserted into the slot 3 to limit the return of the tenon block 5, so that the turntable 2 is fixed on the tower body 1.

[0030] See also Figure 1 , Figure 3 and Figure 5 A slide groove 8 slidably connected to the filling block 7 is provided on the outer side of the turntable 2 and at a corresponding position relative to each through-port 6. The slide groove 8 is used to limit the rotation of the filling block 7. The adjustment component 9 includes threaded rods 901 distributed in a circumferential array. Each threaded rod 901 is fixedly connected to the upper part of each filling block 7. A threaded ring 902 is threadedly sleeved on the outer side of the threaded rod 901. A mounting bracket distributed in a circumferential array is fixedly connected to the outer side of the turntable 2. The mounting bracket is slidably sleeved on the outer side of the threaded ring 902.

[0031] By rotating the threaded ring 902 , the threaded rod 901 is used to drive the filling block 7 to move up and down, so that the filling block 7 can slide on the slide groove 8 , pass through the through opening 6 , and be inserted into the slot 3 .

[0032] See also Figure 5 The outer rotating sleeve of the turntable 2 is provided with an outer gear ring 10, and the outer fixed sleeve of the threaded ring 902 is provided with a gear ring plate, and the outer gear ring 10 is meshed and connected with each gear ring plate;

[0033] By rotating the outer gear ring 10 , the outer gear ring 10 drives each gear ring plate to rotate together, so that the gear ring plate drives the threaded ring 902 to rotate.

[0034] See also Figure 4 and Figure 6 A turntable 11 is rotatably connected at the center of the top of the tower body 1, a block 12 is fixedly connected at the eccentric center of the upper part of the turntable 11, and a block 13 is fixedly connected at the eccentric center of the bottom of the turntable 2, the block 13 is in contact with the block 12, and the block 13 and the block 12 are on the same circular orbit line;

[0035] After the turntable 2 is installed on the tower body 1, the turntable 11 is rotated, and the turntable 11 drives the block 12 to rotate. When the block 12 contacts the stopper 13, it drives the stopper 13 to rotate together, so that the turntable 2 is rotated on the tower body 1, so that the tenon block 5 on the turntable 2 is inserted into the cavity of the mortise 4.

[0036] See also Figure 2 , Figure 3 , Figure 4 and Figure 7 , a gear 14 is rotatably connected to the mounting frame, the gear 14 is meshed with the outer gear ring 10, a servo motor 15 is installed in the tower body 1 and on one side of the turntable 2, and the movable ends of the two servo motors 15 are respectively fixedly connected to one side of the gear 14 and the bottom of the turntable 11. The servo motor 15 used in this application is a purchased part, which is selected according to the requirements of power and size, and this application will not go into details;

[0037] The servo motor 15 is electrically connected to the power source, and the two servo motors 15 are used to drive the gear 14 and the turntable 11 to rotate respectively.

[0038] See also Figure 4 The tenon block 5 includes a coarse block and a thin block which are fixedly connected to each other. The upper part of the thin block is fixedly connected to the bottom of the turntable 2, and the coarse block is located below the thin block.

[0039] See also Figure 6 The mortise 4 includes a coarse groove and a thin groove which are interconnected. The coarse groove is located below the thin groove, and both the coarse groove and the thin groove are formed on the inner wall of one side of the slot 3. The coarse groove is adapted to the coarse block, and the thin groove is adapted to the thin block.

[0040] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A tower crane slewing mechanism, comprising a tower body (1) and a turntable (2), wherein the top of the turntable (2) is rotatably connected to a machine head, and is characterized in that: The tower body (1) is provided with slots (3) distributed in a circumferential array on the upper part, and a mortise (4) is formed on the inner wall of one side of the slot (3). The outer side of the turntable (2) is provided with a mounting plate (16) fixedly sleeved thereon, and the bottom of the mounting plate (16) is fixedly connected with tenon blocks (5) distributed in a circumferential array, each tenon block (5) is plug-connected with each slot (3) and the tenon block (5) is matched with the mortise (4). The mounting plate (16) is provided with through openings (6) distributed in a circumferential array on the upper part, each through opening (6) is staggered with each tenon block (5), and a filling block (7) matched with the slot (3) is slidably connected in the through opening (6), and an adjustment component (9) for adjusting the height of the filling block (7) is provided on the turntable (2).

2. The tower crane slewing mechanism according to claim 1, characterized in that: A slide groove (8) slidably connected to the filling block (7) is provided on the outer side of the turntable (2) and at a position corresponding to each through-port (6); the adjustment assembly (9) comprises threaded rods (901) distributed in a circumferential array, each of the threaded rods (901) is fixedly connected to the upper part of each filling block (7), a threaded ring (902) is threadedly sleeved on the outer side of the threaded rod (901), and a mounting frame distributed in a circumferential array is fixedly connected to the outer side of the turntable (2), and the mounting frame is slidably sleeved on the outer side of the threaded ring (902).

3. The tower crane slewing mechanism according to claim 2, characterized in that: An outer rotating sleeve of the turntable (2) is provided with an outer gear ring (10), and an outer fixed sleeve of the threaded ring (902) is provided with a gear ring plate, and the outer gear ring (10) is meshingly connected with each gear ring plate.

4. The tower crane slewing mechanism according to claim 3, characterized in that: A turntable (11) is rotatably connected at the center position of the top of the tower body (1), a stopper (12) is fixedly connected at an eccentric position on the upper part of the turntable (11), and a stopper (13) is fixedly connected at an eccentric position on the bottom of the turntable (2), and the stopper (13) is in contact with the stopper (12).

5. The tower crane slewing mechanism according to claim 4, characterized in that: A gear (14) is rotatably connected to the mounting frame, and the gear (14) is meshed with the outer gear ring (10). A servo motor (15) is installed inside the tower body (1) and on one side of the turntable (2). The movable ends of the two servo motors (15) are respectively fixedly connected to one side of the gear (14) and the bottom of the turntable (11).

6. The tower crane slewing mechanism according to claim 1, characterized in that: The tenon block (5) comprises a coarse block and a thin block which are fixedly connected to each other, the upper part of the thin block is fixedly connected to the bottom of the turntable (2), and the coarse block is located below the thin block.

7. The tower crane slewing mechanism according to claim 6, characterized in that: The mortise (4) comprises a coarse groove and a thin groove which are interconnected, the coarse groove is located below the thin groove, and both the coarse groove and the thin groove are formed on one inner wall of the slot (3), the coarse groove is adapted to the coarse block, and the thin groove is adapted to the thin block.

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