Suspension type gear structure for slewing mechanism of pile driver

Abstract

The utility model discloses a suspension type gear structure for a slewing mechanism of a pile driver, which comprises a slewing bearing arranged on the pile driver, and the slewing bearing comprises a slewing bearing outer ring, a slewing bearing inner ring and a slewing bearing protective shell; a mounting hole is formed in the slewing bearing protection shell, a bearing seat is arranged in the mounting hole, a bearing is arranged in the bearing seat, a hydraulic motor is arranged above the bearing seat through a bolt, a rotating shaft of the hydraulic motor penetrates through the bearing, a gear is arranged at the end of the rotating shaft through a bolt, and a gear ring meshed with the gear is arranged outside the slewing bearing outer ring. The slewing bearing outer ring is connected with the suspension arm, and a rotary disc is arranged between the slewing bearing inner ring and the slewing bearing protection shell through bolts. The suspension type gear structure is adopted, the bearing is installed in the bearing seat, the type selection of the bearing is not limited by the installation space any more, installation is more convenient, the stability of the bearing is better, the stability of the bearing is improved, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of pile drivers, and more particularly to a suspended gear structure for the slewing mechanism of a pile driver. Background Art

[0002] A pile driver is a common heavy construction machinery, mainly used for driving or extracting pile foundations underground to support buildings or other structures, and is widely used in the construction industry, bridge construction, wharf engineering, oilfield development and other fields. In addition, in the construction of highways, pile drivers also play a crucial role in various fields such as the foundation treatment of simple bridges, subgrade treatment, and foundation treatment of retaining walls.

[0003] The slewing mechanism of a pile driver is an essential part of the pile driver. It is driven by a medium-speed hydraulic motor through a reducer and cooperates with the work of four outrigger cylinders to achieve 360-degree slewing of the pile driver. This design enables the pile driver to rotate flexibly during construction to meet the construction requirements at different angles.

[0004] A special slewing mechanism for a pile driver disclosed in the patent 201621397298.5 applied by our company earlier sets a slewing bearing on the pile driver and realizes 360° rotation through a hydraulic rotary joint in cooperation with the slewing bearing, achieving arbitrary rotation of the boom. However, in this patent, the hydraulic motor drive installation form drives the boom to rotate through a hydraulic rotary joint. When the hydraulic rotary joint is offset during use, it is easy to have the problem of gear set meshing jamming. Long-term gear jamming will lead to a shortened service life of the bearing and affect the normal use of the slewing mechanism of the pile driver. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide a suspended gear structure for the slewing mechanism of a pile driver, which is convenient for installation, improves the stability of the bearing and extends the service life of the bearing.

[0006] To solve the above technical problems, the technical solutions adopted by the utility model are as follows.

[0007] A suspended gear structure for the slewing mechanism of a pile driver includes a slewing bearing arranged on the pile driver. The slewing bearing includes an outer ring of the slewing bearing, an inner ring of the slewing bearing and a protective shell of the slewing bearing. An installation hole is opened on the protective shell of the slewing bearing, a bearing seat is arranged in the installation hole, a bearing is arranged in the bearing seat, a hydraulic motor is arranged above the bearing seat through bolts, the rotating shaft of the hydraulic motor passes through the bearing, a gear is arranged at the end of the rotating shaft through bolts, a gear ring meshing with the gear is arranged outside the outer ring of the slewing bearing, the outer ring of the slewing bearing is connected with the boom, and a turntable is arranged between the inner ring of the slewing bearing and the protective shell of the slewing bearing through bolts.

[0008] Further optimize the technical solution. A plurality of threaded holes for installing the bearing seat are provided beside the mounting holes on the slewing bearing protective housing. The bearing seat is arranged on the mounting hole of the slewing bearing protective housing through bolts passing through the threaded holes.

[0009] Further optimize the technical solution. A snap ring for restricting the axial movement of the bearing is arranged in the bearing hole at the upper end of the bearing.

[0010] Further optimize the technical solution. A snap ring for preventing the gear from falling off is arranged at the bottom end of the gear.

[0011] Due to the adoption of the above technical solutions, the technical progress achieved by the present utility model is as follows.

[0012] A suspended gear structure for the slewing mechanism of a pile driver provided by the present utility model adopts a suspended gear structure. The bearing is installed in the bearing seat. The selection of the bearing is no longer limited by the installation space, and the installation is more convenient. The stability of the bearing is better, which improves the stability of the bearing and extends the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a schematic installation structure diagram of the present utility model and the boom;

[0015] Figure 3 is an exploded structure diagram of the present utility model and the boom.

[0016] Wherein: 1. Hydraulic motor, 2. Snap ring for hole, 3. Bearing, 4. Bearing seat, 5. Gear, 6. Snap ring, 7. Slewing bearing, 71. Outer ring of slewing bearing, 72. Inner ring of slewing bearing, 73. Slewing bearing protective housing, 8. Mounting hole, 9. Boom, 10. Turntable. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0018] A suspended gear structure for the slewing mechanism of a pile driver, in combination with Figure 1As shown in the figure, it includes a slewing bearing 7 arranged on a pile driver. The slewing bearing 7 includes a slewing bearing outer ring 71, a slewing bearing inner ring 72, and a slewing bearing protective housing 73. An installation hole 8 is opened on the slewing bearing protective housing 73. A bearing seat 4 is arranged in the installation hole 8. A bearing 3 is arranged in the bearing seat 4. A hydraulic motor 1 is arranged above the bearing seat 4 through bolts. The rotating shaft of the hydraulic motor 1 passes through the bearing 3. The end of the rotating shaft of the hydraulic motor is provided with a gear 5 through bolts. A gear ring is arranged outside the slewing bearing outer ring 71. The gear ring meshes with the gear 5. The slewing bearing outer ring 71 is connected to the boom 9. A turntable 10 is arranged between the slewing bearing inner ring 72 and the slewing support protective housing 73 through bolts. The turntable 10 is installed on the pile driver.

[0019] In order to facilitate the disassembly of the bearing seat 4, a plurality of threaded holes are opened beside the installation hole on the slewing bearing protective housing 73. The bearing seat 4 is arranged in the installation hole of the slewing bearing protective housing 73 through bolts passing through the threaded holes.

[0020] A hole retaining ring 2 is arranged in the bearing hole inside the upper end of the bearing 3 to prevent the axial movement of the bearing 3.

[0021] A retaining ring 6 is arranged at the bottom end of the gear 5 to prevent the gear from falling off and improve the firmness of the gear installation.

[0022] The schematic diagram of the installation structure of the utility model and the boom is as Figure 2 and 3 shown. The hydraulic motor drives the gear to rotate through the bearing, driving the rotation of the slewing bearing outer ring. Since both the slewing bearing inner ring and the slewing bearing protective housing are fixed on the pile driver through the turntable, the rotation of the slewing bearing outer ring drives the rotation of the boom.

Claims

1. A suspended gear structure for the slewing mechanism of a pile driver, comprising a slewing bearing (7) arranged on the pile driver, and the slewing bearing (7) includes a slewing bearing outer ring (71), a slewing bearing inner ring (72) and a slewing bearing protective shell (73); characterized in that: An installation hole (8) is provided on the slewing bearing protective housing (73). A bearing housing (4) is arranged in the installation hole (8), a bearing (3) is arranged in the bearing housing (4), a hydraulic motor (1) is arranged above the bearing housing (4) by bolts. The rotating shaft of the hydraulic motor (1) passes through the bearing (3), and a gear (5) is arranged at the end of the rotating shaft by bolts. A gear ring meshing with the gear (5) is arranged outside the outer ring (71) of the slewing bearing. The outer ring (71) of the slewing bearing is connected to the boom (9). A turntable (10) is arranged between the inner ring (72) of the slewing bearing and the slewing bearing protective housing (73) by bolts.

2. The suspension gear structure for the slewing mechanism of a pile driver according to claim 1, characterized in that: A plurality of threaded holes for installing the bearing housing are provided beside the installation hole (8) on the slewing bearing protective housing (73). The bearing housing (4) is arranged on the installation hole of the slewing bearing protective housing (73) by bolts passing through the threaded holes.

3. The hanging gear structure for the slewing mechanism of a pile driver according to claim 1, characterized in that: A snap ring for restricting axial movement of the bearing (3) is arranged in the bearing hole at the upper end of the bearing (3).

4. A hanging gear structure for a rotary mechanism of a pile driver according to claim 1, characterized in that: A snap ring (6) for preventing the gear from falling off is arranged at the bottom end of the gear (5).

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