CN211873149U

CN211873149U - Rotary table structure of excavator

Info

Publication number: CN211873149U
Application number: CN202020114110.1U
Authority: CN
Inventors: 孙计印; 李祥朋
Original assignee: Jining Dingchen Machinery Co ltd
Current assignee: Jining Dingchen Machinery Co ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-11-06
Anticipated expiration: 2030-01-19

Abstract

The utility model provides an excavator revolving stage structure. The connecting rod is installed to the upper end of revolving stage main part, the axis of rotation has been run through to the inner wall of connecting rod, the bolt has been cup jointed to the tip screw thread of axis of rotation, one side that the connecting rod was kept away from to the bolt is provided with block mechanism, the arm has been cup jointed to the outer wall that the axis of rotation is in connecting rod intermediate position part, the tip of arm is provided with buffer gear. The utility model provides an excavator revolving stage structure can keep the stability of bolt, the arm has been avoided at the in-process of work, not only can rotate, still can produce the vibration, the tip that leads to the axis of rotation is not hard up, cause the arm to break away from, the problem of production potential safety hazard, the stability of device has been improved, can also when the installation, the pulling threaded rod, it slides to make the threaded rod drive the draw-in groove, thereby make draw-in groove and bolt break away from, sheathe thread bush in at last, fix the threaded rod, thereby the convenience is installed the bolt.

Description

Rotary table structure of excavator

Technical Field

The utility model relates to an excavator field especially relates to an excavator revolving stage structure.

Background

The excavator turntable is an important structural component of a large excavator, and is a supporting part for supporting or placing important components of the large excavator, such as a working device, an engine, a hydraulic main valve, a counterweight and the like, just like the trunk of a human body.

Traditional revolving stage structure is directly to be connected with the arm through the axis of rotation, but the arm not only can rotate at the in-process of work, still can produce the vibration, leads to the tip of axis of rotation not hard up, causes the arm to break away from, produces the problem of potential safety hazard.

Therefore, it is necessary to provide a turntable structure of an excavator to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides an excavator revolving stage structure has solved the arm at the in-process of work, not only can rotate, still can produce the vibration, leads to the tip of axis of rotation not hard up, causes the arm to break away from, produces the problem of potential safety hazard.

For solving the technical problem, the utility model provides a pair of excavator revolving stage structure, including the revolving stage main part, the connecting rod is installed to the upper end of revolving stage main part, run through ground in connecting rod (2) and be equipped with axis of rotation (3), the bolt has been cup jointed to the tip screw thread of axis of rotation, one side that the connecting rod was kept away from to the bolt is provided with card and mechanism, the arm has been cup jointed to the outer wall that the axis of rotation is in connecting rod intermediate position part, the tip of arm is provided with buffer gear.

Preferably, the clamp and the mechanism comprise a clamp groove and a baffle plate, the clamp groove is sleeved on the outer wall of the bolt, the clamp groove is formed in one side, close to the connecting rod, of the baffle plate, and a sliding mechanism is arranged at the lower end of the clamp groove.

Preferably, slide mechanism includes connecting plate, first spout and first spring, the lower extreme at the baffle is installed to the connecting plate, the inner wall at first spout is inlayed to the lower extreme of connecting plate, the inner wall support of connecting plate and first spout passes through first spring coupling, first spout is seted up in the revolving stage main part, one side that the connecting rod was kept away from to the connecting plate is provided with fixed establishment.

Preferably, fixed establishment includes threaded rod and thread bush, the one end of threaded rod is installed in the one side that the connecting rod was kept away from to the connecting plate, the other end of threaded rod passes the inner wall of first spout and extends to the outside of revolving stage main part, the thread bush has been cup jointed to the outer wall that the threaded rod is in revolving stage main part outside.

Preferably, buffer gear includes fixation nut, movable block, second spout and second spring, fixation nut cup joints between axis of rotation outer wall and arm inner wall, the one end laminating that fixation nut kept away from the arm has the movable block, the inner wall at the second spout is inlayed to the movable block, through second spring coupling between the inner wall of movable block and second spout.

Preferably, the diameter of the end of the fixing nut close to the mechanical arm is gradually reduced.

Compared with the prior art, the utility model provides an excavator revolving stage structure has following beneficial effect:

the utility model provides a turntable structure of an excavator,

1. through being provided with the bolt, the draw-in groove, the baffle, the connecting plate, first spout, the threaded rod, first spring and thread bush, can keep the stability of bolt, the arm of having avoided at the in-process of work, not only can rotate, still can produce the vibration, the tip that leads to the axis of rotation is not hard up, cause the arm to break away from, the problem of potential safety hazard is produced, the stability of device has been improved, simultaneously can also when the installation, the pulling threaded rod, it slides to make the threaded rod drive the draw-in groove, thereby make draw-in groove and bolt break away from, the thread bush is sheathe in at last, fix the threaded rod, thereby.

2. Through being provided with fixation nut, movable block, second spout and second spring, can avoid the gap between arm and the axis of rotation great, arm pivoted in-process can control and rock, has reduced axis of rotation life's problem, has improved the life of device.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of a turntable structure of an excavator according to the present invention;

FIG. 2 is a schematic diagram of the structure of FIG. 1 in partial side view;

fig. 3 is an enlarged schematic view of a portion a in fig. 1.

Reference numbers in the figures: 1. revolving stage main part, 2, connecting rod, 3, axis of rotation, 4, bolt, 5, draw-in groove, 6, baffle, 7, connecting plate, 8, first spout, 9, threaded rod, 10, first spring, 11, thread bush, 12, arm, 13, fixation nut, 14, movable block, 15, second spout, 16, second spring.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

Please refer to fig. 1, fig. 2 and fig. 3 in combination, wherein fig. 1 is a schematic structural diagram of a front cross section; FIG. 2 is a schematic partial side view in cross section; fig. 3 is an enlarged schematic view of a portion a in fig. 1. Excavator revolving stage structure includes revolving stage main part 1, and connecting rod 2 is installed to the upper end of revolving stage main part 1, and the inner wall of connecting rod 2 runs through there is axis of rotation 3, and the tip screw thread of axis of rotation 3 has cup jointed bolt 4, and one side that connecting rod 2 was kept away from to bolt 4 is provided with card and mechanism, and axis of rotation 3 has cup jointed arm 12 at the outer wall of 2 intermediate position parts of connecting rod, and the tip of arm 12 is provided with buffer gear.

Card and mechanism include draw-in groove 5 and baffle 6, and draw-in groove 5 cup joints the outer wall at bolt 4, and draw-in groove 5 sets up in the baffle 6 one side that is close to connecting rod 2, and the lower extreme of draw-in groove 5 is provided with slide mechanism.

Slide mechanism includes connecting plate 7, first spout 8 and first spring 10, and the lower extreme at baffle 6 is installed to connecting plate 7, and the inner wall at first spout 8 is inlayed to the lower extreme of connecting plate 7, and connecting plate 7 is connected through first spring 10 with the inner wall support of first spout 8, and first spout 8 is seted up on revolving stage main part 1, and one side that connecting rod 2 was kept away from to connecting plate 7 is provided with fixed establishment.

Fixed establishment includes threaded rod 9 and thread bush 11, and the one end of threaded rod 9 is installed in one side that connecting rod 2 was kept away from to connecting plate 7, and the other end of threaded rod 9 passes the inner wall of first spout 8 and extends to the outside of revolving stage main part 1, and threaded rod 9 has cup jointed thread bush 11 at the outside outer wall of revolving stage main part 1.

Buffer gear includes fixing nut 13, movable block 14, second spout 15 and second spring 16, and fixing nut 13 cup joints between 3 outer walls of axis of rotation and 12 inner walls of arm, and the one end laminating that fixing nut 13 kept away from arm 12 has movable block 14, and movable block 14 inlays at the inner wall of second spout 15, is connected through second spring 16 between the inner wall of movable block 14 and second spout 15.

The securing nut 13 is provided with a decreasing diameter near one end of the mechanical arm 12.

The utility model provides an excavator revolving stage structure's theory of operation as follows:

when the during operation, axis of rotation 3 can be transmitted in the vibration that arm 12 produced, bolt 4 is transmitted for axis of rotation 3, bolt 4 transmits for baffle 6, thereby make baffle 6 and connecting plate 7 make a round trip to slide at the inner wall of first spout 8, the energy conversion who produces the vibration becomes kinetic energy, connecting plate 7 still can extrude connecting plate 7 simultaneously, make connecting plate 7 take place elastic deformation, the energy conversion who produces some vibrations becomes elastic potential energy, it leads to bolt 4 not hard up to have avoided the vibration, thereby produce the potential safety hazard.

When the mechanical arm 12 generates a transverse acting force, the fixing nut 13 is extruded, the fixing nut 13 extrudes the movable block 14, the movable block 14 extrudes the second spring 16, the second spring 16 elastically deforms, the movable block 14 contracts, the fixing nut 13 slides towards the direction of the connecting rod 2, the mechanical arm 12 is prevented from being impacted with the fixing nut 13, when the transverse acting force disappears, the second spring 16 recovers the elastic deformation, the movable block 14 extrudes the fixing nut 13, the fixing nut 13 is enabled to be embedded into the inner wall of the mechanical arm 12 again, a large gap is prevented from being left between the mechanical arm 12 and the rotating shaft 3, the mechanical arm 12 can swing left and right in the rotating process, and the service life of the rotating shaft 3 is prolonged.

through being provided with bolt 4, draw-in groove 5, baffle 6, connecting plate 7, first spout 8, threaded rod 9, first spring 10 and thread bush 11, can keep bolt 4's stability, mechanical arm 12 at the in-process of work has been avoided, not only can rotate, still can vibrate, the tip that leads to axis of rotation 3 is not hard up, cause mechanical arm 12 to break away from, produce the problem of potential safety hazard, the stability of device has been improved, simultaneously can also when the installation, pulling threaded rod 9, make threaded rod 9 drive draw-in groove 5 and slide, thereby make draw-in groove 5 break away from with bolt 4, thread bush 11 is sheatheed in at last, fix threaded rod 9, thereby conveniently install bolt 4.

Through being provided with fixation nut 13, movable block 14, second spout 15 and second spring 16, can avoid the gap between arm 12 and the axis of rotation 3 great, arm 12 pivoted in-process can rock about can, has reduced axis of rotation 3 life's problem, has improved the life of device.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. The utility model provides an excavator revolving stage structure, includes revolving stage main part (1), its characterized in that: connecting rod (2) are installed to the upper end of revolving stage main part (1), run through in connecting rod (2) and be equipped with axis of rotation (3), the tip screw thread of axis of rotation (3) has cup jointed bolt (4), one side that connecting rod (2) were kept away from in bolt (4) is provided with block mechanism, arm (12) have been cup jointed to the outer wall that axis of rotation (3) is in connecting rod (2) intermediate position part, the tip of arm (12) is provided with buffer gear.

2. The turntable structure of the excavator according to claim 1, wherein the clamping mechanism comprises a clamping groove (5) and a baffle plate (6), the clamping groove (5) is sleeved on the outer wall of the bolt (4), the clamping groove (5) is arranged on one side of the baffle plate (6) close to the connecting rod (2), and a sliding mechanism is arranged at the lower end of the clamping groove (5).

3. The turntable structure of the excavator according to claim 2, wherein the sliding mechanism comprises a connecting plate (7), a first sliding chute (8) and a first spring (10), the connecting plate (7) is mounted at the lower end of the baffle (6), the lower end of the connecting plate (7) is embedded in the inner wall of the first sliding chute (8), the connecting plate (7) is connected with the inner wall support of the first sliding chute (8) through the first spring (10), the first sliding chute (8) is arranged on the turntable main body (1), and a fixing mechanism is arranged on one side, away from the connecting rod (2), of the connecting plate (7).

4. The excavator turntable structure according to claim 3, wherein the fixing mechanism comprises a threaded rod (9) and a threaded sleeve (11), one end of the threaded rod (9) is installed on one side of the connecting plate (7) far away from the connecting rod (2), the other end of the threaded rod (9) penetrates through the inner wall of the first sliding chute (8) and extends to the outside of the turntable body (1), and the threaded sleeve (11) is sleeved on the outer wall of the threaded rod (9) at the outside of the turntable body (1).

5. The turntable structure of the excavator according to claim 1, wherein the buffering mechanism comprises a fixing nut (13), a movable block (14), a second sliding groove (15) and a second spring (16), the fixing nut (13) is sleeved between the outer wall of the rotating shaft (3) and the inner wall of the mechanical arm (12), the movable block (14) is attached to one end, away from the mechanical arm (12), of the fixing nut (13), the movable block (14) is embedded in the inner wall of the second sliding groove (15), and the movable block (14) is connected with the inner wall of the second sliding groove (15) through the second spring (16).

6. Excavator turret structure according to claim 5, wherein said fixing nut (13) is arranged with a decreasing diameter close to one end of the robot arm (12).