Rotary table main body structure of excavator

Abstract

The excavator rotary table main body structure comprises a table body, a top seat is arranged at the top of the table body, an installation opening is formed in the top seat, auxiliary supporting assemblies are arranged on the two sides of the top seat, an installation groove is formed in the table body, a second servo motor is fixedly installed on the inner wall of one side of the installation groove, and a first servo motor is fixedly installed on the inner wall of the other side of the installation groove. A worm is fixedly mounted on an output shaft of the second servo motor, and a counterweight assembly connected with the worm in a meshed mode is arranged in the mounting groove. Through the arrangement of the auxiliary supporting assembly and the counterweight assembly, one end of the supporting block can rotate after the first servo motor is started, so that the outer side of the mechanical arm can be supported in an auxiliary mode, stability is improved, the counterweight block can move after the second servo motor is started, and the mechanical arm can be stably supported. Therefore, the position of the balancing weight can be adjusted to balance the weight of the excavator, and the excavator is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of excavators, in particular to an excavator turntable main body structure. Background Art

[0002] The turntable body, also known as the slewing platform body, is an important structural component of large excavators. It is the supporting part that supports or places important components such as the working device, engine, hydraulic main valve, counterweight, etc. of the large excavator, just like the torso of the human body.

[0003] In actual use, the existing excavator turntable body has only the main body as the support point of the excavator's mechanical arm, which has low stability during operation and is inconvenient to use. At the same time, the existing excavator turntable body is inconvenient to balance the weight of the excavator when operating on steep terrain, and its practicality is low. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings in the prior art and to propose an excavator turntable main structure.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A main structure of an excavator turntable includes a platform body, a top seat is provided on the top of the platform body, a mounting port is provided on the top seat, auxiliary support components are provided on both sides of the top seat, a mounting groove is provided inside the platform body, a second servo motor is fixedly mounted on the inner wall of one side of the mounting groove, a worm is fixedly mounted on the output shaft of the second servo motor, and a counterweight component is provided in the mounting groove that is meshed with the worm.

[0007] Preferably, the auxiliary support assembly includes two fixed blocks fixedly mounted on the top of the platform body, a threaded rod is rotatably connected between the two fixed blocks, and a movable block slidably connected to the top of the platform body is threadedly sleeved on the threaded rod, and two mounting blocks are fixedly mounted on the top of the platform body, a rotating shaft is rotatably connected between the two mounting blocks, a support block is fixedly mounted on the outer wall of the rotating shaft, the top of the movable block is rotatably connected to one end of a connecting rod, and the other end of the connecting rod is rotatably connected to the bottom of the support block, a first servo motor is fixedly mounted on the outer wall of one of the fixed blocks, and one end of the threaded rod passes through one of the fixed blocks and is fixedly connected to the output shaft of the first servo motor.

[0008] Preferably, the counterweight assembly includes a cylinder rotatably connected to the inner wall of one end of the mounting groove, a worm gear is fixedly mounted on the outer wall of the cylinder, the worm gear is meshed with the worm, a counterweight block is provided inside the mounting groove, an inner rod is fixedly mounted on the outer wall of one end of the counterweight block, the inner rod is located inside the cylinder, a sliding groove is provided on the outer wall of the inner rod, and a sliding block is fixedly mounted on the inner wall of the cylinder.

[0009] Preferably, the cross section of the mounting groove is in a concave shape.

[0010] Preferably, the counterweight block is slidably connected to both the inner top and the inner bottom of the installation slot.

[0011] Preferably, the sliding groove is spiral-shaped, and the sliding block is located in the sliding groove and is slidably connected to the sliding groove.

[0012] Beneficial effects of the utility model:

[0013] By setting up an auxiliary support assembly and a counterweight assembly, after starting the first servo motor, one end of the support block can be rotated, thereby providing auxiliary support to the outer side of the robotic arm and improving stability. After starting the second servo motor, the counterweight block can be moved, thereby adjusting the position of the counterweight block to balance the weight of the excavator, which is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional structural diagram of the main structure of the excavator turntable proposed by the utility model;

[0015] Figure 2 This is a schematic diagram of the planar structure of the main structure of the excavator turntable proposed by the utility model;

[0016] Figure 3 This is a schematic diagram of the planar structure inside the cylinder of the utility model;

[0017] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0018] In the figure: 1 platform, 2 top seat, 3 mounting port, 4 first servo motor, 5 fixed block, 6 moving block, 7 threaded rod, 8 mounting block, 9 support block, 10 connecting rod, 11 cylinder, 12 worm gear, 13 worm, 14 second servo motor, 15 mounting slot, 16 counterweight, 17 inner rod, 18 sliding slot, 19 sliding block, 20 rotating shaft. DETAILED DESCRIPTION

[0019] 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.

[0020] Reference Figure 1-Figure 4 , an excavator turntable main structure, including a platform 1, a top seat 2 is provided on the top of the platform 1, a mounting port 3 is provided on the top seat 2, and auxiliary support assemblies are provided on both sides of the top seat 2, the auxiliary support assembly includes two fixed blocks 5 fixedly mounted on the top of the platform 1, a threaded rod 7 is rotatably connected between the two fixed blocks 5, and a moving block 6 slidably connected to the top of the platform 1 is threadedly sleeved on the threaded rod 7, two mounting blocks 8 are fixedly installed on the top of the platform 1, a rotating shaft 20 is rotatably connected between the two mounting blocks 8, a support block 9 is fixedly mounted on the outer wall of the rotating shaft 20, the top of the moving block 6 is rotatably connected to one end of a connecting rod 10, and the other end of the connecting rod 10 is rotatably connected to the bottom of the support block 9, a first servo motor 4 is fixedly mounted on the outer wall of one of the fixed blocks 5, and one end of the threaded rod 7 passes through one of the fixed blocks 5 and is fixedly connected to the output shaft of the first servo motor 4;

[0021] The interior of the platform 1 is provided with a mounting groove 15, the cross section of which is in the shape of a concave character, a second servo motor 14 is fixedly mounted on the inner wall of one side of the mounting groove 15, a worm 13 is fixedly mounted on the output shaft of the second servo motor 14, a counterweight assembly is provided in the mounting groove 15 that is meshed with the worm 13, the counterweight assembly includes a cylinder 11 that is rotatably connected to the inner wall of one end of the mounting groove 15, a worm gear 12 is fixedly mounted on the outer wall of the cylinder 11, and the worm gear 12 is meshed with the worm gear 13. 13 is engaged and connected, a counterweight block 16 is provided inside the mounting groove 15, an inner rod 17 is fixedly mounted on the outer wall of one end of the counterweight block 16, the inner rod 17 is located inside the cylinder 11, a sliding groove 18 is provided on the outer wall of the inner rod 17, a sliding block 19 is fixedly mounted on the inner wall of the cylinder 11, the counterweight block 16 is slidably connected to the inner top and inner bottom of the mounting groove 15, the sliding groove 18 is spiral, the sliding block 19 is located in the sliding groove 18 and is slidably connected to the sliding groove 18.

[0022] When the present invention is used, after the excavator arm is mounted on the top seat 2, the arm is adjusted to its position before working, and the threaded rod 7 can be rotated by starting the first servo motor 4. Since the moving block 6 is slidably connected to the top of the platform 1 and does not rotate, the moving block 6 can be moved left and right. During the movement of the moving block 6, the connecting rod 10 is provided to enable one end of the support block 9 to rotate around the axis of the rotating shaft 20, so that the support block 9 can be stuck on the outside of the arm for auxiliary support, thereby improving stability. When working on steep terrain, it is necessary to adjust the position of the counterweight block 16 to balance the weight of the excavator. The second servo motor 14 is driven to rotate the worm 13, and the worm 13 is meshed with the worm wheel 12 to rotate the cylinder 11. When the cylinder 11 rotates, the counterweight 16 cannot rotate due to the sliding connection with the inner top and inner bottom of the mounting groove 15, that is, the inner rod 17 cannot rotate, and the sliding block 19 is located in the sliding groove 18, so that when the cylinder 11 rotates and drives the sliding block 19 to rotate, the sliding block 19 will slide in the spiral sliding groove 18, and then the inner rod 17 and the counterweight 16 can move toward or away from the cylinder 11, thereby realizing the adjustment of the position of the counterweight 16.

[0023] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An excavator turntable main structure, comprising a turntable body (1), characterized in that: A top seat (2) is provided on the top of the platform (1), a mounting opening (3) is provided on the top seat (2), auxiliary support components are provided on both sides of the top seat (2), a mounting groove (15) is provided inside the platform (1), a second servo motor (14) is fixedly installed on the inner wall of one side of the mounting groove (15), a worm (13) is fixedly installed on the output shaft of the second servo motor (14), and a counterweight component meshing with the worm (13) is provided in the mounting groove (15).

2. The excavator turntable main structure according to claim 1, characterized in that: The auxiliary support assembly comprises two fixed blocks (5) fixedly mounted on the top of the platform (1), a threaded rod (7) being rotatably connected between the two fixed blocks (5), a movable block (6) being slidably connected to the top of the platform (1) being threadedly sleeved on the threaded rod (7), two mounting blocks (8) being fixedly mounted on the top of the platform (1), a rotating shaft (20) being rotatably connected between the two mounting blocks (8), a supporting block (9) being fixedly mounted on the outer wall of the rotating shaft (20), one end of a connecting rod (10) being rotatably connected to the top of the movable block (6), the other end of the connecting rod (10) being rotatably connected to the bottom of the supporting block (9), a first servo motor (4) being fixedly mounted on the outer wall of one of the fixed blocks (5), one end of the threaded rod (7) passing through one of the fixed blocks (5) and being fixedly connected to the output shaft of the first servo motor (4).

3. The excavator turntable main structure according to claim 1, characterized in that: The counterweight assembly includes a cylinder (11) rotatably connected to the inner wall of one end of a mounting groove (15), a worm wheel (12) fixedly mounted on the outer wall of the cylinder (11), the worm wheel (12) being meshedly connected with the worm (13), a counterweight block (16) being arranged inside the mounting groove (15), an inner rod (17) fixedly mounted on the outer wall of one end of the counterweight block (16), the inner rod (17) being located inside the cylinder (11), a sliding groove (18) being provided on the outer wall of the inner rod (17), and a sliding block (19) fixedly mounted on the inner wall of the cylinder (11).

4. The excavator turntable main structure according to claim 1, characterized in that: The cross section of the mounting groove (15) is in the shape of a Chinese character "concave".

5. The excavator turntable main structure according to claim 3, characterized in that: The counterweight (16) is slidably connected to the inner top and the inner bottom of the installation groove (15).

6. The excavator turntable main structure according to claim 3, characterized in that: The sliding groove (18) is spiral-shaped, and the sliding block (19) is located in the sliding groove (18) and is slidably connected to the sliding groove (18).

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