Slewing driving device for fluid pipeline transportation

Abstract

The utility model discloses a rotary driving device for fluid pipeline transportation, which comprises a shell, a rotary bearing assembly body and a worm assembly, and the rotary bearing assembly body comprises a worm gear, an outer ring, a rolling body, an isolation block and an inner ring; a rolling body is arranged in an annular raceway between the outer ring and the inner ring, the worm gear is sleeved outside the outer ring and is fixedly connected with the outer ring, and the diameter of a distribution circle of mounting holes of the outer ring and the inner ring is consistent with that of a distribution circle of mounting holes of flanges of pipelines at two ends for conveying fluid; the inner ring is fixedly connected with the shell, and the worm gear is connected with the worm assembly. The rotary driving device can meet the installation requirements of equal-diameter pipelines, and therefore the steering function of the pipelines is achieved. And meanwhile, the sealing performance of the rotary driving device is enhanced, so that the rotary driving device can meet the requirement of fluid pipeline transportation.

Description

Technical Field

[0001] The utility model relates to the structural design of a slewing drive and belongs to the field of machinery manufacturing. Background Art

[0002] A slewing drive device is a new type of slewing mechanism. Since a slewing bearing is adopted as the core component, it can bear axial force, radial force and overturning moment simultaneously, playing a very important role and position in the construction machinery industry. Since the slewing bearing is mainly composed of an inner ring, an outer ring and rolling elements, the inner and outer rings can rotate relative to each other. Therefore, the slewing drive device is mainly applied to occasions with requirements for load bearing and steering, such as heavy flatbed transporters, container cranes, truck-mounted cranes, mining machinery, aerial work platforms, radar devices, solar power generation systems for sun tracking, construction machinery and new energy fields, etc.

[0003] When the pipeline of a fluid pipeline conveying device needs to have a steering function, a slewing drive device is required. And the use in fluid pipeline conveying puts higher requirements on the slewing drive device: ① Usually, the pipe diameters on both sides where the fluid pipeline needs to turn are the same, which requires the installation dimensions of the inner and outer rings of the slewing drive to be the same. However, in existing slewing drives, the installation dimension of the outer ring of the slewing bearing is often larger than that of the inner ring, so the installation requirements cannot be met; ② During the transportation of fluid in the pipeline, there should be no dripping or leakage, so high sealing performance is required for the slewing drive device. However, the sealing performance of the slewing bearing in existing slewing drives is poor; ③ The slewing drive device for fluid pipeline conveying should be as light as possible on the premise of meeting the load-bearing requirements. However, existing slewing drive devices often lack lightness. Therefore, there is an urgent need for a slewing drive device that can be used for fluid pipeline transportation at present. Summary of the Invention

[0004] The problem to be solved by the utility model is to provide a slewing drive device for fluid pipeline transportation, which can meet the installation requirements of equal-diameter pipelines, thereby realizing the steering function of the pipeline. At the same time, it enhances the sealing performance of the slewing drive device to meet the needs of fluid pipeline conveying. In addition, it significantly reduces the weight of the inner and outer rings, making the structure of the slewing drive more lightweight and compact.

[0005] A slewing drive device for fluid pipeline conveying of the utility model includes a housing, a slewing bearing assembly, and a worm assembly. The slewing bearing assembly includes a worm gear, an outer ring, rolling elements, spacer blocks, and an inner ring. Rolling elements and spacer blocks are arranged in the annular raceway between the outer ring and the inner ring. The worm gear is sleeved outside the outer ring and is fixedly connected to it. The pitch circle diameters of the mounting holes of both the outer ring and the inner ring are the same as the pitch circle diameters of the mounting holes of the flanges of the pipelines at both ends for conveying fluid. The inner ring is fixedly connected to the housing, and the worm gear is connected to the worm assembly.

[0006] Further, the cross-section of the inner ring is in an "L" shape, and the extending arm is connected to the pipe flange on the side for conveying fluid.

[0007] Further, the cross-section of the outer ring is in an "F" shape. The upper extending arm is connected to the pipe flange on the side for conveying fluid, and the lower extending arm is fixedly connected to the worm gear.

[0008] Further, the slewing bearing assembly further includes a sealing assembly, and the sealing assembly includes an upper O-ring and a lower O-ring. An annular groove is provided above and below the outer circle of the inner ring on the annular track. The upper O-ring and the lower O-ring are respectively placed in the upper and lower annular grooves and are in contact with the inner hole of the outer ring.

[0009] Further, the sealing assembly further includes a rotary shaft lip seal. A positioning stop is machined at the same height on the inner hole of the outer ring and the outer circle of the inner ring, and the rotary shaft lip seal is placed in the positioning stop.

[0010] Further, the slewing bearing assembly further includes an internally threaded cylindrical pin and a fixing screw. The outer ring and the worm gear are connected by the internally threaded cylindrical pin and the fixing screw.

[0011] Further, the slewing drive device further includes an O-ring. An annular groove is provided on the outer end face of the extending arm of the inner ring, and the O-ring is placed in the annular groove.

[0012] Further, the slewing drive device further includes a fixing screw, and the slewing bearing assembly is connected to the housing by the fixing screw.

[0013] Further, the worm assembly includes a fixed-end bearing cover, bearings, a worm, and a connecting-end bearing cover. The worm is arranged in the mounting hole below the housing, meshes with the worm gear in the middle, and bearings are provided between its two ends and the mounting hole. A fixed-end bearing cover and a connecting-end bearing cover are respectively connected to the left and right ends of the mounting hole.

[0014] The advantages of the rotary drive device for fluid pipeline transportation of the present utility model are as follows: First, the distribution circle diameters of the mounting holes of the outer ring and the inner ring and the flanges at both ends of the pipeline for conveying fluid are the same, meeting the installation requirements of equal-diameter pipelines, thus realizing the pipeline turning function; Second, by setting sealing components such as O-rings and rotary shaft lip seals, the sealing performance of the rotary drive device is enhanced, enabling it to meet the needs of fluid pipeline transportation; It can not only prevent fluid from dripping out and polluting the environment, but also protect the slewing bearing raceway from being affected by the conveyed fluid and external dust, extending the service life of the rotary drive device; Third, the "F" cross-section of the outer ring and the "L" cross-section of the inner ring can significantly reduce the weight of the inner and outer rings while making more extreme use of the inner hole size of the slewing bearing, making the structure of the rotary drive more lightweight and compact. Description of the Drawings

[0015] Figure 1 This is a schematic diagram of the slewing drive device of the present utility model.

[0016] Figure 2 It is Figure 1 a sectional view along line A-A in

[0017] Figure 3 a schematic diagram of the slewing bearing assembly.

[0018] Figure 4 a schematic diagram of the installation of the slewing drive device and the pipeline. Specific embodiments

[0019] The following is a detailed description of the present utility model with reference to the accompanying drawings and specific embodiments:

[0020] Embodiment 1

[0021] From Figure 1 , Figure 2 , Figure 3 , it can be known that a slewing drive device for fluid pipeline transportation of the present utility model includes a housing 1, a slewing bearing assembly 4, and a worm assembly 5. The slewing bearing assembly 4 includes a worm wheel 4.1, an outer ring 4.3, rolling elements 4.4, spacer blocks 4.5, and an inner ring 4.6. Rolling elements 4.4 and spacer blocks 4.5 are arranged in the annular raceway between the outer ring 4.3 and the inner ring 4.6. The worm wheel 4.1 is sleeved outside the outer ring 4.3 and the two are fixedly connected. The pitch circle diameters of the mounting holes of the outer ring 4.3 and the inner ring 4.6 are the same as those of the mounting holes of the flanges of the two end pipelines for transporting fluid. The inner ring 4.6 is fixedly connected to the housing 1, and the worm wheel 4.1 is connected to the worm assembly 5.

[0022] For the slewing drive device for fluid pipeline transportation of the present utility model: when the pitch circle diameters of the mounting holes of the outer ring 4.3 and the inner ring 4.6 are the same as those of the mounting holes of the flanges of the two end pipelines for transporting fluid and the inner diameters of the two end pipelines are the same as the inner diameter of the slewing bearing inner ring, the installation requirements of equal-diameter pipelines are met.

[0023] Embodiment 2

[0024] From Figure 1 , Figure 2 , Figure 3 , it can be known that a slewing drive device for fluid pipeline transportation of the present utility model: the cross-section of the inner ring 4.6 is in an "L" shape, and the extension arm is connected to the flange of one side pipeline for transporting fluid.

[0025] By providing an extension arm on the inner ring 4.6, the pitch circle diameters of the mounting holes of the outer ring 4.3 and the inner ring 4.6 are the same as those of the flanges on both sides of the pipeline, thus meeting the installation requirements of equal-diameter pipelines.

[0026] Embodiment 3

[0027] From Figure 1 、 Figure 2 、 Figure 3 it can be seen that a slewing drive device for fluid pipeline transportation according to the present utility model: the cross-section of the outer ring 4.3 is in an "F" shape, the upper extension arm is connected to the pipeline flange on one side for conveying fluid, and the lower extension arm is fixedly connected to the worm gear 4.1.

[0028] The middle of the outer circle of the outer ring 4.3 is processed to form upper and lower extension arms, so that while ensuring its connection with the worm gear 4.1 and the pipeline flange to meet the load-bearing requirements, the weight is reduced and the light-weight performance is achieved.

[0029] Embodiment 4

[0030] From Figure 1 、 Figure 2 、 Figure 3 it can be seen that a slewing drive device for fluid pipeline transportation according to the present utility model: the slewing bearing assembly 4 further includes a sealing assembly, and the sealing assembly includes an upper O-ring 4.8 and a lower O-ring 4.7; an annular groove is provided above and below the outer circle of the inner ring 4.6 in the annular track, and the upper O-ring 4.8 and the lower O-ring 4.7 are respectively placed in the upper and lower annular grooves and are in contact with the inner hole of the outer ring 4.3.

[0031] The O-rings play a dynamic sealing role between the inner ring 4.6 and the outer ring 4.3: the upper O-ring 4.8 prevents fluid from entering the raceway of the slewing bearing during transportation and causing adverse effects, and the lower O-ring 4.7 prevents external dust and foreign objects from entering the raceway of the slewing bearing and causing adverse effects.

[0032] Embodiment 5

[0033] From Figure 1 、 Figure 2 、 Figure 3 it can be seen that a slewing drive device for fluid pipeline transportation according to the present utility model: the sealing assembly further includes a rotary shaft lip seal 4.9, and a positioning stop is processed at the position where the inner hole of the outer ring 4.3 and the outer circle of the inner ring 4.6 are at the same height, and the rotary shaft lip seal 4.9 is placed in the positioning stop.

[0034] The rotary shaft lip seal 4.9 plays a dynamic sealing role between the inner ring 4.6 and the outer ring 4.3, further improving the sealing performance and avoiding adverse effects caused by fluid entering the raceway of the slewing bearing during transportation.

[0035] Embodiment 6

[0036] From Figure 1 、 Figure 2 、 Figure 3It can be seen that a swing drive device for fluid pipeline transportation of the present utility model: the swing bearing assembly 4 further includes an internal thread cylindrical pin 4.2 and a fixing screw 4.10; the outer ring 4.3 and the worm gear 4.1 are connected by the internal thread cylindrical pin 4.2 and the fixing screw 4.10.

[0037] The worm gear 4.1 is an annular part, and it realizes reliable connection with the outer ring 4.3 through the internal thread cylindrical pin 4.2 and the fixing screw 4.10.

[0038] Embodiment 7

[0039] From Figure 1 、 Figure 2 It can be seen that a swing drive device for fluid pipeline transportation of the present utility model: it further includes an O-ring 3, and an annular groove is provided on the outer end surface of the inner ring 4.6 extension arm, and the O-ring 3 is placed in the annular groove.

[0040] The O-ring 3 plays a static sealing role between the housing 1 and the swing bearing assembly 4, avoiding the outward dripping of fluid along the sealing contact surface between the inner ring 4.6 and the housing 1 during transportation.

[0041] Embodiment 8

[0042] From Figure 1 、 Figure 2 It can be seen that a swing drive device for fluid pipeline transportation of the present utility model: it further includes a fixing screw 2, and the swing bearing assembly 4 is connected to the housing 1 through the fixing screw 2.

[0043] The fixing screw 2 realizes the connection between the swing bearing assembly 4 and the housing 1.

[0044] Embodiment 9

[0045] From Figure 1 、 Figure 2 It can be seen that a swing drive device for fluid pipeline transportation of the present utility model: the worm gear assembly 5 includes a fixed end bearing cover 5.1, a bearing 5.2, a worm 5.3, and a connection end bearing cover 5.4; the worm 5.3 is arranged in the installation hole under the housing 1, meshes with the worm gear 4.1 in the middle, and bearings 5.2 are arranged between its two ends and the installation hole; a fixed end bearing cover 5.1 and a connection end bearing cover 5.4 are connected to the left and right ends of the installation hole respectively.

[0046] A hydraulic motor or an electric motor (not shown in the figure) is installed on the connection end bearing cover 5.4 and is connected to the worm 5.3. When the hydraulic motor or the electric motor works, it drives the worm 5.3 to rotate, causing the worm gear 4.1 to rotate, and thus causing the outer ring 4.3 connected to the worm gear 4.1 to rotate, so as to realize the steering function of the pipeline of the fluid pipeline transportation equipment.

[0047] From Figure 4It can be seen that when the slewing drive device is installed with the pipeline, the pipeline 2 at the input end is fixed on the inner ring 4.6 in the slewing drive device by screws, and the pipeline 7 at the output end is fixed on the outer ring 4.3 in the slewing drive device by screws. During operation, the hydraulic motor or electric motor drives the worm 5.3 to rotate, thereby driving the worm gear 4.1 and the outer ring 4.3 on the slewing bearing assembly 4 to rotate, realizing the steering function of the pipeline at the output end.

[0048] The advantages of the slewing drive device for fluid pipeline transportation of the present utility model are as follows: First, the distribution circle diameters of the mounting holes of the outer ring 4.3 and the inner ring 4.6 are the same as those of the flanges at both ends of the pipeline for transporting fluid, meeting the installation requirements of equal-diameter pipelines, thereby realizing the steering function of the pipeline; Second, by setting sealing components such as O-rings 3, 4.8, 4.7, and rotary shaft lip seals 4.9, the sealing performance of the slewing drive device is enhanced, enabling it to meet the needs of fluid pipeline transportation; it can not only prevent fluid from leaking out and polluting the environment, but also protect the slewing bearing raceway from being affected by the transported fluid and external dust, extending the service life of the slewing drive device; Third, the "F"-shaped cross-section of the outer ring and the "L"-shaped cross-section of the inner ring can significantly reduce the weights of the inner and outer rings while making more extreme use of the inner hole size of the slewing bearing, making the structure of the slewing drive more lightweight and compact.

[0049] In summary, the slewing drive device of the present utility model can meet the requirements of equal-diameter pipeline transportation and has the advantages of high sealing performance, compact structure, and light weight.

Claims

1. A rotary drive device for fluid pipeline transportation, comprising a housing (1), a rotary bearing assembly (4), and a worm assembly (5), wherein: The slewing bearing assembly (4) comprises a worm wheel (4.1), an outer ring (4.3), a rolling body (4.4), an isolation block (4.5), and an inner ring (4.6); the rolling body (4.4) and the isolation block (4.5) are arranged in the annular raceway between the outer ring (4.3) and the inner ring (4.6); the worm wheel (4.1) is sleeved on the outer side of the outer ring (4.3) and the two are fixedly connected; the mounting hole distribution circle diameters of the outer ring (4.3) and the inner ring (4.6) are consistent with the mounting hole distribution circle diameters of the flanges of the pipelines at both ends for conveying fluid; the inner ring (4.6) is fixedly connected to the housing (1), and the worm wheel (4.1) is connected to the worm assembly (5).

2. The rotary drive device according to claim 1, characterized in that: The cross section of the inner ring (4.6) is "L" shaped, and the extension arm is connected to the flange of the pipeline on one side of the conveying fluid.

3. The rotary drive device according to claim 1, characterized in that: The cross section of the outer ring (4.3) is in an "F" shape, the upper extension arm is connected to a flange of a pipeline on one side for conveying fluid, and the lower extension arm is fixedly connected to the worm gear (4.1).

4. The rotary drive device according to claim 1, characterized in that: The slewing bearing assembly (4) also includes a sealing component, which includes an upper O-ring (4.8) and a lower O-ring (4.7); the outer circle of the inner ring (4.6) is provided with an annular groove at the upper and lower parts of the annular track, respectively; the upper O-ring (4.8) and the lower O-ring (4.7) are respectively placed in the upper and lower annular grooves and are in contact with the inner hole of the outer ring (4.3).

5. The rotary drive device according to claim 4, characterized in that: The sealing assembly also includes a rotating shaft lip seal ring (4.9). Positioning stoppers are machined at equal heights of the inner hole of the outer ring (4.3) and the outer circle of the inner ring (4.6), and the rotating shaft lip seal ring (4.9) is placed in the positioning stoppers.

6. The rotary drive device according to claim 1, characterized in that: The slewing bearing assembly (4) also includes an internal thread cylindrical pin (4.2) and a fixing screw (4.10); the outer ring (4.3) and the worm wheel (4.1) are connected via the internal thread cylindrical pin (4.2) and the fixing screw (4.10).

7. The rotary drive device according to claim 1, characterized in that: The rotary drive device also includes an O-ring (3). The outer end surface of the extension arm of the inner ring (4.6) is provided with an annular groove, and the O-ring (3) is placed in the annular groove.

8. The rotary drive device according to claim 1, characterized in that: The slewing drive device also includes a fixing screw (2), and the slewing bearing assembly (4) is connected to the housing (1) via the fixing screw (2).

9. The rotary drive device according to claim 1, characterized in that: The worm assembly (5) comprises a fixed end bearing cover (5.1), a bearing (5.2), a worm (5.3), and a connecting end bearing cover (5.4); the worm (5.3) is arranged in a mounting hole below the housing (1), the middle of which is meshed with the worm wheel (4.1), and bearings (5.2) are arranged between its two ends and the mounting hole; the left and right ends of the mounting hole are respectively connected to a fixed end bearing cover (5.1) and a connecting end bearing cover (5.4).

Images