Limiting type slewing bearing

Abstract

The utility model discloses a limiting type slewing bearing, and belongs to the field of slewing bearings. The limiting type slewing bearing comprises an inner ring and an outer ring located outside the inner ring, a supporting ring is arranged at the upper end of the inner ring in a surrounding and welding mode, a first transmission ring is arranged on one side of the upper end of the outer portion of the supporting ring, and a second transmission ring is arranged on the other side of the upper end of the outer portion of the supporting ring. The limiting type slewing bearing solves the problems that according to an existing limiting type slewing bearing, the friction coefficient between the movable block and the inserting ring is reduced due to repeated inserting and pulling, and the movable block and the inserting ring are prone to falling off due to loosening in the limiting process. Different limiting requirements can be met through adjustment of the moving block, the moving block can be directly adjusted when the first transmission ring and the second transmission ring are adjusted, and the moving block does not need to be repeatedly disassembled.

Description

Technical Field

[0001] The utility model relates to the field of slewing bearings, in particular to a limit type slewing bearing. Background Technique

[0002] A slewing bearing is a new type of mechanical component, also known as a turntable bearing or a rotating bearing. It is mainly composed of an inner ring, an outer ring, rolling elements, etc. It is a large bearing that can withstand comprehensive loads and can simultaneously withstand large axial, radial loads and overturning moments;

[0003] Chinese Patent with the publication number CN219809289U discloses a limit type slewing bearing, including fixed ring limiting. The fixed ring and the insertion ring are connected by fixing bolts. One end of the outer ring close to the insertion ring is fixedly connected with a limiting block, and the other end of the limiting block extends above the inner ring. Through the setting of the limiting component, the moving block and the inner ring can be quickly fixed or separated, improving the efficiency of replacing the position of the moving block. Moreover, the moving block is connected with the insertion ring by means of a limiting rod and being clamped with a slot, and the firmness of the connection between the moving block and the insertion ring will not be reduced, improving the reliability of the slewing bearing, and the setting of the limiting component.

[0004] When the limit type slewing bearing of the above patent is installed and the moving block is inserted, it is necessary to complete the fixation of the moving block through the card slot connection between the moving block and the insertion ring. Repeated insertion and extraction will cause the friction coefficient between the moving block and the insertion ring to decrease, and the stability of the installation of the moving block will be reduced after long-term use, and it is easy to fall off due to loosening during the limiting process. Content of the Utility Model

[0005] The purpose of the utility model is to provide a limit type slewing bearing. The moving block makes angle adjustment along with the rotation of the first transmission ring and the second transmission ring. The adjustment of the moving block can realize different limiting requirements. When adjusting the first transmission ring and the second transmission ring, the moving block can be directly adjusted without repeatedly disassembling the moving block, solving the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A limit type slewing bearing, including an inner ring and an outer ring located outside the inner ring. A support ring is welded around the upper end of the inner ring. On one side of the upper end of the outer side of the support ring, a first transmission ring is arranged. On the other side of the upper end of the outer side of the support ring, a second transmission ring is arranged. And both sides of the support ring are respectively embedded into the first transmission ring and the second transmission ring and are slidably connected with the inside of the first transmission ring and the second transmission ring.

[0007] Preferably, an extension block is welded at the middle position of one side of the outer wall of the first transmission ring and the second transmission ring, and moving blocks located outside the extension block are provided on both sides of the upper end of the inner ring. The interior of the moving block is connected to the external slot of the extension block. When the moving block is installed, the moving block is stuck on the outside of the extension block to complete the initial fixation of the moving block. After the initial fixation, it is convenient to rotate and fix the second bolt.

[0008] Preferably, a second bolt with threaded engagement is provided inside the moving block, the upper end of the inner part of the outer ring is recessed in the mounting groove, a first bolt is rotatably provided on one side inside the moving block, the second bolt rotates through and completes the fixation of the moving block, and the first bolt rotates inside the moving block to facilitate pushing the rubber block and adjust the position of the rubber block inside the mounting groove.

[0009] Preferably, a rubber block is provided at the lower end of the first bolt, and the upper end of the rubber block is rotatably connected to the lower end of the first bolt. The rotation of the first bolt can push the rubber block to fit tightly against the mounting groove, thereby fixing the first transmission ring and the second transmission ring that have been rotationally adjusted, and also simultaneously fixing the moving block used to limit the limiting block.

[0010] Preferably, the outer portion of the first bolt cooperates with the inner thread of the moving block, and the thread cooperation of the first bolt can push the rubber block, and the position of the rubber block can be adjusted by the first bolt.

[0011] Preferably, a limiting block is welded on one side of the upper end of the outer ring, and rubber pads fixed by glue are provided on both sides of the limiting block. The rubber pads are attached to both sides of the limiting block. The limiting block will collide with the moving block used for limiting during rotation, and during the collision, the rubber pads will suppress the noise generated by the low-profile collision.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model aims at the range of required restriction, rotates the first transmission ring and the second transmission ring at the upper end outside the support ring, and the rotation of the first transmission ring and the second transmission ring can adjust the movable block at the upper end outside the extension block connected by the second bolt. The two movable blocks can limit the rotation angle of the restriction block. When adjusting the two movable blocks, the position of the fixed movable block can be adjusted directly by sliding the first transmission ring and the second transmission ring outside the support ring. There is no need to disassemble the movable block and then repeatedly install it. The efficiency of adjusting the position of the movable block is high. On the other hand, the first bolt inside the movable block can push the rubber block to embed into the installation groove after rotation. With the continuous rotation of the first bolt, the rubber block can be tightly attached to the inner wall of the installation groove, so as to fit and fix the angle of the second transmission ring and the first transmission ring after adjustment. The adjustment efficiency is high and repeated installation is unnecessary. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional view of the overall external structure of the present utility model;

[0015] Figure 2 This is a sectional view of the support ring drive structure of the present utility model;

[0016] Figure 3 This is an exploded view of the positional relationship between the first drive ring and the second drive ring of the present utility model.

[0017] In the figure: 1, inner ring; 2, outer ring; 3, limiting block; 4, rubber pad; 5, support ring; 6, first drive ring; 7, second drive ring; 8, moving block; 9, first bolt; 10, rubber block; 11, second bolt; 12, mounting groove; 13, movable cavity; 14, extension block. Specific embodiments

[0018] The present invention will be further described below in conjunction with specific embodiments.

[0019] Embodiment 1

[0020] As Figure 1 shown, a limit type slewing bearing of this embodiment includes an inner ring 1 and an outer ring 2. The outer ring 2 is located outside the inner ring 1. A limiting block 3 is provided on one side of the upper end of the outer ring 2, and the limiting block 3 is fixedly welded to the outer ring 2. Moving blocks 8 are provided on both sides of the upper end of the inner ring 1. After the two moving blocks 8 adjust the angle around the inner ring 1, the rotation angle of the limiting block 3 is limited;

[0021] In order to facilitate the adjustment of the position of the moving block 8, as Figure 2 shown, a support ring 5 is disposed around the upper end of the inner ring 1, and the support ring 5 is fixedly welded to the inner ring 1. The moving block 8 slides along the support ring 5 to adjust the orientation of the moving block 8;

[0022] Among them, a first drive ring 6 is provided on one side of the upper end of the outer part of the support ring 5, and a second drive ring 7 is provided on the other side of the upper end of the outer part of the support ring 5. The two sides of the support ring 5 are respectively inserted into the interiors of the first drive ring 6 and the second drive ring 7 and are slidably connected to the interiors of the first drive ring 6 and the second drive ring 7. The first drive ring 6 and the second drive ring 7 slide outside the support ring 5 to directly adjust the position of the moving block 8;

[0023] In addition, an extension block 14 is provided at the middle position on one side of the outer walls of the first drive ring 6 and the second drive ring 7, and the extension block 14 is fixedly welded to the outer walls of the first drive ring 6 and the second drive ring 7 respectively. As Figure 3As shown, the moving block 8 is located outside the extending block 14. The inside of the moving block 8 is connected to the external card slot of the extending block 14. The moving block 8 can be slidably plugged to the upper end outside the extending block 14. A second bolt 11 is disposed through the inside of the moving block 8, and the outside of the second bolt 11 is in threaded cooperation with the inside of the extending block 14. By rotating the second bolt 11, the second bolt 11 can penetrate the moving block 8 and embed into the inside of the extending block 14;

[0024] To facilitate the fixing of the moving block 8 and the first transmission ring 6 and the second transmission ring 7 for transmission, as Figure 2 and Figure 3 shown, the upper end inside the outer ring 2 is recessed around to form a mounting groove 12. A first bolt 9 is rotatably disposed on one side inside the moving block 8. The first bolt 9 overlaps with the mounting groove 12 in position. While the first transmission ring 6 and the second transmission ring 7 slide outside the support ring 5, the first bolt 9 will slide along the mounting groove 12;

[0025] Wherein, the lower end of the first bolt 9 penetrates the moving block 8 and extends into the mounting groove 12. A rubber block 10 is disposed at the lower end of the first bolt 9, and the upper end of the rubber block 10 is rotatably connected to the lower end of the first bolt 9. The outside of the first bolt 9 is in threaded cooperation with the inside of the moving block 8. The rotation of the first bolt 9 can push the rubber block 10 to move towards the inner wall of the mounting groove 12, so that the rubber block 10 closely adheres to the inner wall of the mounting groove 12 and restricts the rotation and position fixing of the first transmission ring 6 and the second transmission ring 7;

[0026] Embodiment 2

[0027] To avoid large noise generated during the restriction due to the restriction of the restricting block 3 on the moving block 8, as Figure 1 and Figure 3 shown, rubber pads 4 are disposed on both sides of the restricting block 3, and the rubber pads 4 are fixedly bonded to both sides of the restricting block 3 by glue. After the restriction and collision, the collision between the restricting block 3 and the moving block 8 will be cushioned by the rubber pads 4 for the impact;

[0028] Embodiment 3

[0029] To facilitate the adjustment of the angles of the two moving blocks 8 in a large range, as Figure 2 shown, an activity cavity 13 is provided between the inside of the second transmission ring 7 and the outside of the support ring 5, and the outside of the activity cavity 13 is connected to the card slot of the first transmission ring 6. Through the reserved activity cavity 13, it is convenient for the first transmission ring 6 to slide outside the support ring 5, so that the first transmission ring 6 can slide and be received inside the activity cavity 13, improving the range after the sliding adjustment of the moving block 8.

[0030] Working principle: When using the device and restricting the rotating limiting block 3, the moving block 8 is installed outside the extension block 14. The second bolt 11 rotates through the moving block 8 and then is embedded inside the extension block 14 to fix the moving block 8 outside the extension block 14. The positions of the first driving ring 6 and the second driving ring 7 are slidably adjusted on both sides outside the support ring 5. The first bolt 9 pre-installed inside the moving block 8 is rotated. The rotation of the first bolt 9 generates relative movement inside the moving block 8. The continuous rotation of the first bolt 9 can push the rubber block 10, so that the rubber block 10 continuously fits the installation groove 12 inside the installation groove 12. After the installation groove 12 fits with the rubber block 10, the first driving ring 6 and the second driving ring 7 are fixed.

[0031] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention.

Claims

1. A limit type slewing bearing, comprising an inner ring (1) and an outer ring (2) located outside the inner ring (1), characterized in that, A support ring (5) is circumferentially welded at the upper end of the inner ring (1). On one side of the upper end of the outer part of the support ring (5), a first transmission ring (6) is arranged. On the other side of the upper end of the outer part of the support ring (5), a second transmission ring (7) is arranged. And both sides of the support ring (5) are respectively embedded into the interiors of the first transmission ring (6) and the second transmission ring (7) and are slidably connected with the interiors of the first transmission ring (6) and the second transmission ring (7).

2. The limit type slewing bearing according to claim 1, characterized in that, At the middle position on one side of the outer walls of the first transmission ring (6) and the second transmission ring (7), an extension block (14) is welded. On both sides of the upper end of the inner ring (1), moving blocks (8) located outside the extension block (14) are arranged. The interior of the moving block (8) is connected with the external card slot of the extension block (14).

3. The a limit type slewing bearing according to claim 2, characterized in that, A second bolt (11) with a threaded fit is arranged through the interior of the moving block (8). The upper end inside the outer ring (2) is recessed circumferentially to form a mounting groove (12). On one side inside the moving block (8), a first bolt (9) is rotatably arranged.

4. The one kind of limited-position slewing bearing according to claim 3, characterized in that, A rubber block (10) is arranged at the lower end of the first bolt (9), and the upper end of the rubber block (10) is rotatably connected with the lower end of the first bolt (9).

5. The a limit type slewing bearing according to claim 3, characterized in that The exterior of the first bolt (9) is in threaded fit with the interior of the moving block (8).

6. The one kind of limit type slewing bearing according to claim 1, characterized in that, On one side of the upper end of the outer ring (2), a limiting block (3) is welded. Rubber pads (4) fixedly bonded by glue are arranged on both sides of the limiting block (3).

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