Bearing seat positioning device for large arm of excavator

Abstract

The utility model discloses a bearing seat positioning device for an excavator big arm, which comprises a fixing frame and a mounting seat, a first mounting disc and a second mounting disc are arranged in the mounting seat, the second mounting disc and the first mounting disc are rotatably connected with the mounting seat through bearings, a first gear ring is sleeved on the first mounting disc, and a second gear ring is sleeved on the second mounting disc. First annular teeth are fixedly installed on the first installation disc, three sets of first sliding blocks are arranged on the installation base and are in meshed connection with the first installation disc through the first annular teeth, a second tooth ring is connected to the second installation disc in a sleeving mode, and second annular teeth are fixedly installed on the second installation disc. The installation base is provided with three sets of second sliding blocks, the installation base is matched with the three sets of first sliding blocks, the second sliding blocks, the expansion pipes and the like which are annularly distributed to fix bearing pedestals of different models, it can be guaranteed that the center positions of the bearing pedestals are fixed, operation is convenient and fast in the fixing process, and the installation and positioning work efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing seat positioning, in particular to a bearing seat positioning device for an excavator arm. Background Art

[0002] The bearing seat is one of the most important connecting parts in the excavator frame. It is mainly used to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. Where there is a bearing, there must be a support point. Usually, the inner support point of the bearing is the shaft, and the outer support is the so-called bearing seat. The installation of the bearing seat determines the accuracy of the mechanical rotation. In order to ensure the installation accuracy, a positioning device is required when installing the bearing seat.

[0003] In the prior art, the positioning and installation of bearing seats are mostly carried out using connecting parts such as bolts and screws. Different types of connecting and positioning devices are required when installing bearing seats of different models. The positioning work steps are cumbersome and inconvenient to use, and the positioning accuracy of the bearing seat is low. Utility Model Content

[0004] The purpose of the utility model is to provide a bearing seat positioning device for an excavator arm to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the utility model provides the following technical solution: A bearing seat positioning device for an excavator arm, comprising a fixing frame and a mounting seat, wherein a first mounting plate and a second mounting plate are provided in the mounting seat, and the second mounting plate and the first mounting plate are both rotatably connected to the mounting seat through a bearing, the first mounting plate is sleeved with a first gear ring, and the first mounting plate is fixedly mounted with a first annular gear. The mounting seat is provided with three groups of first sliders, and the three groups of first sliders are all meshed with the first mounting plate through the first annular gear, the second mounting plate is sleeved with a second gear ring, and the second mounting plate is fixedly mounted with a second annular gear. The mounting seat is provided with three groups of second sliders, and the three groups of second sliders are all meshed with the second mounting plate through the second annular gear, and the first slider and the second slider are both fixedly mounted with an expansion tube, a fixing rod is provided above the fixing frame, and the fixing rod is slidably connected to the fixing frame, a first adjusting frame is provided in the fixing frame, a second adjusting frame is provided in the first adjusting frame, and an end of the second adjusting frame away from the first adjusting frame is fixedly connected to the mounting seat, and a screw rod is provided in the fixing frame.

[0006] As a further preferred embodiment of the present technical solution, a first rack and a first cylinder are provided in the mounting seat, the first rack is meshed and connected with the first annular gear, and the first rack is connected to the output end of the first cylinder, and a second rack and a second cylinder are provided in the mounting seat, the second rack is meshed and connected with the second annular gear, and the second rack is connected to the output end of the second cylinder.

[0007] As a further preferred embodiment of the present technical solution, the first slider and the second slider are both slidably connected to the mounting seat, an oil groove is provided in the expansion tube, a sliding tube is provided in the expansion tube, the sliding tube is slidably connected to the expansion tube through the oil groove, the expansion tube is provided with a screw, both ends of the screw respectively pass through the expansion tube and are rotatably connected to the expansion tube through bearings, the screw passes through the sliding tube and is threadedly connected to the sliding tube.

[0008] As a further preferred embodiment of the present technical solution, the first adjusting frame is slidably connected to the fixed frame, the second adjusting frame is slidably connected to the first adjusting frame, a threaded rod is provided in the fixed rod, a threaded tube is provided in the first adjusting frame, the left end of the threaded rod passes through the fixed rod and is rotatably connected to the fixed rod through a bearing, the right end of the threaded rod passes through the first adjusting frame and is threadedly connected to the first adjusting frame, the threaded tube passes through the first adjusting frame and is rotatably connected to the first adjusting frame through a bearing, and the threaded tube passes through the second adjusting frame and is threadedly connected to the second adjusting frame.

[0009] As a further preferred embodiment of the present technical solution, two groups of symmetrically distributed limit grooves are provided on the threaded rod, and two groups of symmetrically distributed limit blocks are provided in the threaded tube. The limit blocks are arranged corresponding to the limit grooves, and the threaded tube is slidably connected to the threaded rod through the limit blocks.

[0010] As a further preferred embodiment of the present technical solution, both ends of the screw rod respectively pass through the fixing frame and are rotatably connected to the fixing frame through bearings, and the screw rod passes through the fixing rod and is threadedly connected to the fixing rod.

[0011] The utility model provides a bearing seat positioning device for an excavator arm, which has the following beneficial effects:

[0012] (1) The utility model realizes the fixation of bearing seats of different models by the provided mounting seat in conjunction with three groups of annularly distributed first sliders, second sliders and expansion tubes, and can ensure that the center position of the bearing seat is fixed. The operation during the fixing process is convenient and quick, and the installation and positioning work efficiency is high; the bearing seat is clamped between the first slider and the second slider, and the first cylinder and the second cylinder in the mounting seat are started to drive the sliding of the first rack and the second rack respectively, and the first gear ring and the second gear ring engaged with the first rack and the second rack respectively drive the first mounting plate and the second mounting plate to rotate, and drive the first annular gear and the second annular gear to rotate, and under the limiting action of the mounting seat, the three groups of first sliders and second sliders are synchronously moved inward or outward to realize the rapid positioning of the bearing seat, and the motor in the expansion tube is started to drive the screw to rotate, and under the limiting action of the expansion tube, the slide tube slides in the expansion tube, and the hydraulic oil in the oil tank is squeezed to expand the expansion tube, and the expansion tubes on the inner and outer first sliders and the second slider are expanded at the same time to squeeze the bearing seat and strengthen the positioning of the bearing seat.

[0013] (2) The utility model realizes the adjustment of the mounting seat position through the provided fixing rod, the first adjustment frame and the second adjustment frame, thereby realizing the adjustment of the fixed position of the bearing seat; by starting the motor in the fixing frame to drive the screw rod to rotate, the fixing rod drives the first adjustment frame and the second adjustment frame to adjust the height under the limiting action of the fixing frame, and the motor in the fixing rod drives the threaded rod to rotate, and under the limiting action of the fixing rod, the first adjustment frame slides in the fixing rod, and the threaded tube slides synchronously with the first adjustment frame, and under the action of the limiting groove and the limiting block, the threaded tube rotates synchronously with the threaded rod, and under the limiting action of the first adjustment frame, the second adjustment frame slides in the first adjustment frame, thereby completing the adjustment of the positioning position of the mounting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic structural diagram of the mounting base of the utility model;

[0016] Figure 3 This is a schematic structural diagram of the expansion tube of the utility model;

[0017] Figure 4 This is a schematic structural diagram of a fixing rod of the present utility model;

[0018] Figure 5 For the utility model Figure 4 -A magnified view of the structure;

[0019] In the figure: 1. fixing frame; 2. mounting seat; 3. first mounting plate; 4. first gear ring; 5. first rack; 6. first cylinder; 7. first annular gear; 8. first slider; 9. second mounting plate; 10. second gear ring; 11. second rack; 12. second cylinder; 13. second annular gear; 14. second slider; 15. expansion tube; 16. oil tank; 17. sliding tube; 18. screw; 19. fixing rod; 20. first adjusting frame; 21. second adjusting frame; 22. screw; 23. threaded rod; 24. threaded tube; 25. limit groove; 26. limit block. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] The utility model provides a technical solution: Figure 1 、 Figure 2 and Figure 3As shown, in this embodiment, a bearing seat positioning device for an excavator arm includes a fixing frame 1 and a mounting seat 2, a first mounting plate 3 and a second mounting plate 9 are provided in the mounting seat 2, the second mounting plate 9 and the first mounting plate 3 are both rotatably connected to the mounting seat 2 through bearings, a first gear ring 4 is sleeved on the first mounting plate 3, a first annular gear 7 is fixedly installed on the first mounting plate 3, three groups of first sliders 8 are provided on the mounting seat 2, the three groups of first sliders 8 are all meshed and connected with the first mounting plate 3 through the first annular gear 7, a second gear ring 10 is sleeved on the second mounting plate 9, a second annular gear 13 is fixedly installed on the second mounting plate 9, three groups of second sliders 14 are provided on the mounting seat 2, the three groups of second sliders 14 are all meshed and connected with the second mounting plate 9 through the second annular gear 13, the first slider 8 and the second slider 14 are both fixedly installed with an expansion tube 15, a fixing rod 19 is provided above the fixing frame 1, the fixing rod 19 is slidably connected to the fixing frame 1, and a first adjustment frame is provided in the fixing frame 1. 20. A second adjusting frame 21 is provided in the first adjusting frame 20. The end of the second adjusting frame 21 away from the first adjusting frame 20 is fixedly connected to the mounting base 2. A screw rod 22 is provided in the fixing frame 1. A first rack 5 and a first cylinder 6 are provided in the mounting base 2. The first rack 5 is meshed with the first annular gear 7. The first rack 5 is connected to the output end of the first cylinder 6. A second rack 11 and a second cylinder 12 are provided in the mounting base 2. The second rack 11 is meshed with the second annular gear 13. The second rack 11 is connected to the output end of the second cylinder 12. The first slider 8 and the second slider 14 are both slidably connected to the mounting base 2. An oil groove 16 is provided in the expansion tube 15. A slide tube 17 is provided in the expansion tube 15. The slide tube 17 is slidably connected to the expansion tube 15 through the oil groove 16. The expansion tube 15 is provided with a screw 18. Both ends of the screw 18 pass through the expansion tube 15 and are rotatably connected to the expansion tube 15 through bearings. The screw 18 passes through the slide tube 17 and is threadedly connected to the slide tube 17.

[0022] The mounting seat 2 is provided to cooperate with the three groups of annularly distributed first sliders 8, second sliders 14 and expansion tubes 15 to achieve the fixation of bearing seats of different models, and can ensure that the center position of the bearing seat is fixed. The operation is convenient and fast during the fixing process, and the installation and positioning work efficiency is high. The bearing seat is clamped between the first slider 8 and the second slider 14, and the first cylinder 6 and the second cylinder 12 in the mounting seat 2 are started to drive the first rack 5 and the second rack 11 to slide respectively, and the first gear ring 4 and the second gear ring 10 engaged with the first rack 5 and the second rack 11 respectively drive the first mounting plate 3 and the second The mounting plate 9 rotates, and drives the first annular gear 7 and the second annular gear 13 to rotate. Under the limiting action of the mounting seat 2, the three groups of first sliders 8 and second sliders 14 are synchronously moved inward or outward, so as to realize rapid positioning of the bearing seat. The motors in the expansion tube 15 are respectively started to drive the screw 18 to rotate. Under the limiting action of the expansion tube 15, the slide tube 17 slides in the expansion tube 15, and the hydraulic oil in the oil tank 16 is squeezed to expand the expansion tube 15. The inner and outer first sliders 8 and the expansion tubes 15 on the second slider 14 expand simultaneously to squeeze the bearing seat and strengthen the positioning of the bearing seat.

[0023] like Figure 4 and Figure 5 As shown, the first adjusting frame 20 is slidably connected to the fixed frame 1, and the second adjusting frame 21 is slidably connected to the first adjusting frame 20. A threaded rod 23 is provided in the fixing rod 19, and a threaded tube 24 is provided in the first adjusting frame 20. The left end of the threaded rod 23 passes through the fixing rod 19 and is rotatably connected to the fixing rod 19 through a bearing. The right end of the threaded rod 23 passes through the first adjusting frame 20 and is threadedly connected to the first adjusting frame 20. The threaded tube 24 passes through the first adjusting frame 20 and is rotatably connected to the first adjusting frame 20 through a bearing. The threaded tube 24 passes through the second adjusting frame 21 and is threadedly connected to the second adjusting frame 21. Two groups of symmetrically distributed limiting grooves 25 are provided on the threaded rod 23, and two groups of symmetrically distributed limiting blocks 26 are provided in the threaded tube 24. The limiting blocks 26 are correspondingly arranged with the limiting grooves 25. The threaded tube 24 is slidably sleeved with the threaded rod 23 through the limiting blocks 26. The two ends of the screw rod 22 respectively pass through the fixing frame 1 and are rotatably connected to the fixing frame 1 through a bearing. The screw rod 22 passes through the fixing rod 19 and is threadedly connected to the fixing rod 19.

[0024] The position of the mounting seat 2 is adjusted by the provided fixing rod 19, the first adjusting frame 20 and the second adjusting frame 21, thereby achieving the adjustment of the fixed position of the bearing seat; by starting the motor in the fixing frame 1 to drive the screw rod 22 to rotate, the fixing rod 19 drives the first adjusting frame 20 and the second adjusting frame 21 to adjust the height under the limiting action of the fixing frame 1, and the motor in the fixing rod 19 drives the threaded rod 23 to rotate. Under the limiting action of the fixing rod 19, the first adjusting frame 20 slides in the fixing rod 19, and the threaded tube 24 slides synchronously with the first adjusting frame 20. Under the action of the limiting groove 25 and the limiting block 26, the threaded tube 24 rotates synchronously with the threaded rod 23. Under the limiting action of the first adjusting frame 20, the second adjusting frame 21 slides in the first adjusting frame 20, thereby completing the adjustment of the positioning position of the mounting seat 2.

[0025] The utility model provides a bearing seat positioning device for an excavator arm, and its specific working principle is as follows: the bearing seat is clamped between the first slider 8 and the second slider 14, and the first cylinder 6 and the second cylinder 12 in the mounting seat 2 are started to respectively drive the first rack 5 and the second rack 11 to slide, and the first gear ring 4 and the second gear ring 10 meshing with the first rack 5 and the second rack 11 respectively drive the first mounting plate 3 and the second mounting plate 9 to rotate, and drive the first annular gear 7 and the second annular gear 13 to rotate, and under the limiting action of the mounting seat 2, the three groups of first sliders 8 and second sliders 14 are synchronously moved inward or outward to achieve rapid positioning of the bearing seat, and the motor in the expansion tube 15 is respectively started to drive the screw 18 to rotate, and under the limiting action of the expansion tube 15, the slide tube 17 is made to slide in the expansion tube 15, and the liquid in the oil tank 16 is moved. The pressure oil is squeezed to expand the expansion tube 15, and the expansion tube 15 on the inner and outer first sliders 8 and the second slider 14 expands at the same time to squeeze the bearing seat and strengthen the positioning of the bearing seat. The motor in the fixed frame 1 is started to drive the screw rod 22 to rotate. Under the limiting action of the fixed frame 1, the fixed rod 19 drives the first adjusting frame 20 and the second adjusting frame 21 to adjust the height. The motor in the fixed rod 19 drives the threaded rod 23 to rotate. Under the limiting action of the fixed rod 19, the first adjusting frame 20 slides in the fixed rod 19, and the threaded tube 24 slides synchronously with the first adjusting frame 20. Under the action of the limiting groove 25 and the limiting block 26, the threaded tube 24 rotates synchronously with the threaded rod 23. Under the limiting action of the first adjusting frame 20, the second adjusting frame 21 slides in the first adjusting frame 20, thereby completing the adjustment of the positioning position of the mounting seat 2.

[0026] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bearing seat positioning device for an excavator boom, comprising a fixing frame (1) and a mounting seat (2), characterized in that: The mounting seat (2) is provided with a first mounting plate (3) and a second mounting plate (9), the second mounting plate (9) and the first mounting plate (3) are both rotatably connected to the mounting seat (2) through bearings, the first mounting plate (3) is sleeved with a first gear ring (4), the first mounting plate (3) is fixedly mounted with a first annular tooth (7), the mounting seat (2) is provided with three groups of first sliders (8), the three groups of first sliders (8) are all meshed and connected with the first mounting plate (3) through the first annular tooth (7), the second mounting plate (9) is sleeved with a second gear ring (10), the second mounting plate (9) is fixedly mounted with a second annular tooth (13), the mounting seat (2) is provided with a first gear ring (4), the first mounting plate (3) is fixedly mounted with a first annular tooth (7), the mounting seat (2) is provided with a first gear ring (10), the second mounting plate (9) is fixedly mounted with a second annular tooth (13), the mounting seat (2) is provided with a first gear ring (4), the first mounting plate (3) is fixedly mounted with a first annular tooth (7), the first mounting plate (3) is fixedly mounted with a first annular tooth (7), the first mounting plate (2) is provided with a first gear ring (10), the second mounting plate (9) is fixedly mounted with a second annular tooth (13), the first mounting plate (2) is provided with a first slider (8), the first mounting plate (2) is provided with a first gear ring (10), the first ... slider (8), the first mounting plate ) is provided with three groups of second sliders (14), the three groups of second sliders (14) are all meshed and connected with the second mounting plate (9) through the second annular teeth (13), the first slider (8) and the second slider (14) are both fixedly installed with an expansion tube (15), a fixing rod (19) is provided above the fixing frame (1), the fixing rod (19) is slidably connected to the fixing frame (1), a first adjustment frame (20) is provided inside the fixing frame (1), a second adjustment frame (21) is provided inside the first adjustment frame (20), the second adjustment frame (21) is fixedly connected to the mounting seat (2) at one end away from the first adjustment frame (20), and a screw rod (22) is provided inside the fixing frame (1).

2. The bearing seat positioning device for an excavator arm according to claim 1, characterized in that: A first rack (5) and a first cylinder (6) are provided in the mounting seat (2), the first rack (5) is meshedly connected with the first annular tooth (7), and the first rack (5) is connected to the output end of the first cylinder (6). A second rack (11) and a second cylinder (12) are provided in the mounting seat (2), the second rack (11) is meshedly connected with the second annular tooth (13), and the second rack (11) is connected to the output end of the second cylinder (12).

3. The bearing seat positioning device for an excavator arm according to claim 1, characterized in that: The first slider (8) and the second slider (14) are both slidably connected to the mounting seat (2); an oil groove (16) is provided in the expansion tube (15); a slide tube (17) is provided in the expansion tube (15); the slide tube (17) is slidably connected to the expansion tube (15) through the oil groove (16); the expansion tube (15) is provided with a screw (18); both ends of the screw (18) respectively penetrate the expansion tube (15) and are rotatably connected to the expansion tube (15) through a bearing; the screw (18) penetrates the slide tube (17) and is threadedly connected to the slide tube (17).

4. The bearing seat positioning device for an excavator arm according to claim 1, characterized in that: The first adjustment frame (20) is slidably connected to the fixed frame (1), the second adjustment frame (21) is slidably connected to the first adjustment frame (20), a threaded rod (23) is provided in the fixed rod (19), a threaded tube (24) is provided in the first adjustment frame (20), the left end of the threaded rod (23) passes through the fixed rod (19) and is rotatably connected to the fixed rod (19) through a bearing, the right end of the threaded rod (23) passes through the first adjustment frame (20) and is threadedly connected to the first adjustment frame (20), the threaded tube (24) passes through the first adjustment frame (20) and is rotatably connected to the first adjustment frame (20) through a bearing, and the threaded tube (24) passes through the second adjustment frame (21) and is threadedly connected to the second adjustment frame (21).

5. The bearing seat positioning device for an excavator arm according to claim 4, characterized in that: The threaded rod (23) is provided with two groups of symmetrically distributed limiting grooves (25), and the threaded tube (24) is provided with two groups of symmetrically distributed limiting blocks (26). The limiting blocks (26) are arranged corresponding to the limiting grooves (25), and the threaded tube (24) is slidably connected to the threaded rod (23) through the limiting blocks (26).

6. The bearing seat positioning device for an excavator arm according to claim 1, characterized in that: Both ends of the screw rod (22) respectively pass through the fixing frame (1) and are rotatably connected to the fixing frame (1) via bearings. The screw rod (22) passes through the fixing rod (19) and is threadedly connected to the fixing rod (19).

Images