A slewing bearing flatness detection positioning clamp

Abstract

The utility model discloses a rotary support flatness detection positioning fixture of rotary support positioning frock technical field, including base, the base top is provided with gear ring, gear ring and base swing joint, tooth sets on the inner wall of the inner circle of gear ring, fixed plate fixed mounting is at the edge place of base, the installation groove is set up in the middle part of fixed plate, rack sets up in the installation groove, positioning shaft sets up at the top of base, gear is installed on positioning shaft, fixed post fixed mounting is at the top of rack, and the fixed connection is in positioning plate fixed column top, and the screw hole sets up in positioning plate top, carries out the fixed through the use gear drive to rotary support, and mechanical gear drive does not need fluid medium, and the failure rate is low, and the maintenance is simple, and the gear engagement transmission has no hysteresis, and the repeat positioning accuracy is high, is suitable for precision machining, direct mechanical transmission efficiency is high, and the energy loss of hydraulic system.

Description

Technical Field

[0001] This utility model relates to the field of slewing bearing positioning fixture technology, specifically a slewing bearing flatness detection and positioning fixture. Background Technology

[0002] Slewing bearings are large bearings capable of simultaneously bearing axial force, radial force, and overturning moment. They are widely used in engineering machinery, wind power generation, military equipment, and other fields. After the slewing bearing is manufactured, its flatness and accuracy need to be measured to ensure that the slewing bearing's dimensions are up to standard. For example, the slewing bearing testing fixture disclosed in Chinese patent documents (application number: CN202222080129.0) uses hydraulic drive to fix the slewing bearing. Hydraulic drive requires components such as pump stations and oil tanks, resulting in a large system volume. Hydraulic oil is prone to leakage, requiring regular replacement of seals and filters, leading to high maintenance costs. Oil temperature changes may affect system stability. In the aforementioned patent, the first and second hydraulic devices are fixed on the test bench, and the slewing bearing is fixed between the first and second hydraulic devices. In addition, considering the length of the first and second hydraulic rods, the device itself has limited dimensions for fixing the slewing bearing, making it impossible to fix a wide range of slewing bearing dimensions.

[0003] To address this, we propose a positioning fixture for detecting the flatness of slewing bearings. Utility Model Content

[0004] The purpose of this invention is to provide a slewing bearing flatness detection and positioning fixture to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a slewing bearing flatness detection and positioning fixture, including a base, a toothed ring being provided on the top of the base, and the toothed ring being movably connected to the base;

[0006] Teeth, which are disposed on the inner wall of the inner ring of the gear ring;

[0007] The fixing plate is fixedly installed at the edge of the base;

[0008] The mounting slot is located in the middle of the fixing plate;

[0009] A rack is disposed within the mounting slot;

[0010] The positioning shaft is located on the top of the base;

[0011] Gear, the gear being mounted on the positioning shaft;

[0012] The fixing post is fixedly installed on the top of the rack;

[0013] The positioning plate is fixedly connected to the top of the fixed column;

[0014] A threaded hole is provided on the top of the positioning plate;

[0015] A fixing rod is installed in the threaded hole, and a hexagonal hole is provided at the top of the fixing rod.

[0016] Preferably, a worm gear is connected to the lower part of the outer ring of the gear ring, a drive shaft is provided at the left end of the worm gear, a support plate is provided on the drive shaft, and a motor is connected to the left end of the drive shaft.

[0017] Preferably, the teeth on the outer ring of the gear ring mesh with the worm gear.

[0018] Preferably, the drive shaft passes through the support plate and is connected to the worm gear, and the drive shaft and the support plate are movably connected, with the support plate fixedly installed on the base.

[0019] Preferably, the rack is provided with guide grooves at both the top and bottom, and the inner wall of the mounting groove is provided with mounting holes at both the top and bottom, with ball bearings installed in the mounting holes.

[0020] Preferably, the positioning shaft is connected to the base via a bearing, and the gear is fixedly connected to the positioning shaft.

[0021] Preferably, the lower part of the surface of the fixing rod is provided with an external thread that mates with the threaded hole, and the threaded hole is provided in three sets.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] 1. The motor drives the worm gear to rotate via the transmission shaft. The worm gear drives the gear ring to rotate, which in turn drives the gear to rotate. The gear rotation causes the rack to move. The rack moves the positioning plate via the fixed column. The fixed rod on the positioning plate fixes the slewing bearing. This device fixes the inner or outer ring of the slewing bearing, facilitating measurement of the outer or inner ring. By using gear transmission to fix the slewing bearing, mechanical gear transmission requires no fluid medium, has a low failure rate, is easy to maintain, has no lag in gear meshing transmission, high repeatability, is suitable for precision machining, and has high efficiency due to direct mechanical transmission without the energy loss of a hydraulic system.

[0024] 2. Three sets of threaded holes are provided. The fixing rod is fixed to the positioning plate by threaded connection. By flexibly adjusting the position of the fixing rod according to the size of the slewing bearing, this device can fix slewing bearings of different sizes. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0027] Figure 3 This is a schematic diagram of the rack mounting structure of this utility model;

[0028] Figure 4 This is an enlarged view of section A of this utility model.

[0029] In the diagram: 1. Base; 2. Gear ring; 3. Gear; 4. Fixing plate; 5. Mounting groove; 6. Rack; 7. Positioning shaft; 8. Gear; 9. Fixing column; 10. Positioning plate; 11. Threaded hole; 12. Fixing rod; 13. Hexagonal hole; 14. Worm gear; 15. Drive shaft; 16. Support plate; 17. Motor; 18. Guide groove; 19. Mounting hole; 20. Ball bearing. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figure 1-4This utility model provides a technical solution: a slewing bearing flatness detection and positioning fixture, including a base 1, a gear ring 2 on the top of the base 1, the gear ring 2 being movably connected to the base 1, teeth 3 being disposed on the inner wall of the inner ring of the gear ring 2, a fixing plate 4 being fixedly installed at the edge of the base 1, a mounting groove 5 being disposed in the middle of the fixing plate 4, a rack 6 being disposed in the mounting groove 5, a positioning shaft 7 being disposed on the top of the base 1, a gear 8 being mounted on the positioning shaft 7, a fixing column 9 being fixedly installed on the top of the rack 6, a positioning plate 10 being fixedly connected to the top of the fixing column 9, a threaded hole 11 being disposed on the top of the positioning plate 10, a fixing rod 12 being installed in the threaded hole 11, and a hexagonal hole 13 being disposed on the top of the fixing rod 12. The slewing bearing is measured, and according to the dimensions of the slewing bearing, the slewing bearing is placed among the three sets of fixing rods 12. Intermittently fitted onto three sets of fixed rods 12, the motor 17 is started. The motor 17 drives the worm gear 14 to rotate through the transmission shaft 15. The worm gear 14 drives the gear ring 2 to rotate, and the gear ring 2 drives the gear 8 to rotate. The rotation of the gear 8 causes the rack 6 to move towards the center of the base 1 or away from the center of the base 1. The rack 6 drives the positioning plate 10 to move through the fixed column 9. The fixed rod on the positioning plate 10 fixes the slewing bearing. This device fixes the inner or outer ring of the slewing bearing, which is convenient for measuring the outer or inner ring of the slewing bearing. By using gear transmission to fix the slewing bearing, mechanical gear transmission does not require a fluid medium, has a low failure rate, is easy to maintain, has no lag in gear meshing transmission, has high repeatability, is suitable for precision machining, has high efficiency in direct mechanical transmission, and has no energy loss of hydraulic system.

[0032] Reference embodiment: A worm gear 14 is connected to the lower part of the outer ring of the gear ring 2. A drive shaft 15 is provided at the left end of the worm gear 14. A support plate 16 is provided on the drive shaft 15. A motor 17 is connected to the left end of the drive shaft 15. The teeth on the surface of the outer ring of the gear ring 2 are engaged with the worm gear 14. The drive shaft 15 passes through the support plate 16 and is connected to the worm gear 14. The drive shaft 15 and the support plate 16 are movably connected. The support plate 16 is fixedly installed on the base 1. The worm gear 14 drives the gear ring 2 to rotate and fix the slewing bearing. Through worm gear transmission, when the helix angle λ ≤ the friction angle φ, the system cannot drive in reverse (i.e., the worm wheel cannot drive the worm to rotate), thereby achieving self-locking. Thus, the fixing rod 12 stably fixes the slewing bearing.

[0033] Reference embodiment: The rack 6 is provided with guide grooves 18 at the top and bottom, and the mounting groove 5 is provided with mounting holes 19 at the top and bottom. The mounting holes 19 are provided with balls 20. There are four sets of guide grooves 18, mounting holes 19 and balls 20, which are distributed in two sets on the left and right and two sets in the front and back in the mounting groove 5. The balls 20 are designed to reduce the friction between the rack 6 and the mounting groove 5, and at the same time support the rack 6.

[0034] Reference embodiment: The positioning shaft 7 is connected to the base 1 by a bearing, the gear 8 is fixedly connected to the positioning shaft 7, and the positioning shaft 7 rotates through the bearing, thereby causing the gear 8 to rotate.

[0035] Reference embodiment: The lower part of the surface of the fixing rod 12 is provided with an external thread that mates with the threaded hole 11. There are three sets of threaded holes 11. The fixing rod 12 is fixed to the positioning plate 10 by threaded connection. By flexibly adjusting the position of the fixing rod 12 according to the size of the slewing bearing, this device can fix slewing bearings of different sizes. The hexagonal hole 13 provided at the top of the fixing rod 12 is a regular hexagon, which makes it easy to rotate the fixing rod 12 with an internal hex wrench.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A slewing bearing flatness testing and positioning fixture, characterized in that, Includes a base (1), and a toothed ring (2) is provided on the top of the base (1), and the toothed ring (2) is movably connected to the base (1); Teeth (3) are disposed on the inner wall of the inner ring of the toothed ring (2); Fixing plate (4) is fixedly installed at the edge of the base (1); The mounting slot (5) is located in the middle of the fixing plate (4); A rack (6) is disposed within the mounting slot (5); Positioning shaft (7) is located on the top of the base (1); Gear (8), the gear (8) is mounted on the positioning shaft (7); A fixing post (9) is fixedly installed on the top of the rack (6); Positioning plate (10) is fixedly connected to the top of the fixed column (9); A threaded hole (11) is provided on the top of the positioning plate (10); A fixing rod (12) is installed in the threaded hole (11), and a hexagonal hole (13) is provided on the top of the fixing rod (12).

2. The slewing bearing flatness detection and positioning fixture according to claim 1, characterized in that: The lower part of the outer ring of the gear ring (2) is connected to a worm (14), and a drive shaft (15) is provided at the left end of the worm (14). A support plate (16) is provided on the drive shaft (15), and a motor (17) is connected to the left end of the drive shaft (15).

3. A slewing bearing flatness detection and positioning fixture according to claim 2, characterized in that: The outer surface teeth of the gear ring (2) are engaged with the worm (14).

4. A slewing bearing flatness detection and positioning fixture according to claim 2, characterized in that: The drive shaft (15) passes through the support plate (16) and is connected to the worm gear (14). The drive shaft (15) and the support plate (16) are movably connected. The support plate (16) is fixedly installed on the base (1).

5. A slewing bearing flatness detection and positioning fixture according to claim 1, characterized in that: The rack (6) is provided with guide grooves (18) at the top and bottom, and the mounting groove (5) is provided with mounting holes (19) at the top and bottom, and ball bearings (20) are provided in the mounting holes (19).

6. A slewing bearing flatness detection and positioning fixture according to claim 1, characterized in that: The positioning shaft (7) is connected to the base (1) by a bearing, and the gear (8) is fixedly connected to the positioning shaft (7).

7. A slewing bearing flatness detection and positioning fixture according to claim 1, characterized in that: The lower part of the surface of the fixing rod (12) is provided with an external thread that mates with the threaded hole (11), and the threaded hole (11) is provided with three sets.

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