Support structure of guide wheel
By installing subwheels on both sides of the main wheel of the excavator guide wheel, the force is allocated to the rotation shafts and bearings of the main wheel and subwheel, the problem of serious wear of the guide wheel shafts and bearings is solved, extending the service life and reducing bearing replacement frequency.
Patent Information
- Application Number
- CN202421100929.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The shaft of the excavator guide wheel and the bearing between the shaft and the bracket are severely worn due to long-term heavy forces, resulting in high replacement frequency and short service life.
Design a bracket structure for the guide wheel. By installing the sub-wheel longitudinally between the side plates above the two sides of the main wheel, the sub-wheel is supported on the outer surface of the main wheel, and the force is allocated to the rotation shaft and bearing of the main wheel and the sub-wheel. superior.
By sharing the force, the wear of the main wheel shaft and bearings is reduced, the service life is extended and the bearing replacement frequency is reduced.
Smart Images
Figure CN222474295U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of guide wheel installation structures, in particular to a support structure of a guide wheel. Background Art
[0002] The guide wheel of the excavator is used to guide the crawler track to rotate correctly and prevent it from running off the track and going off the track. Most excavators also play the role of supporting wheels, which can increase the contact area of the crawler track with the ground and reduce the ground contact pressure. The wheel surface of the guide wheel is made smooth, with a stop arm ring in the middle as a guide, and the ring surfaces on both sides support the track chain.
[0003] The weight of the excavator is very large, so the force transmitted to the guide wheel is very large. When working for a long time, the shaft of the guide wheel and the bearing between the shaft and the bracket will be greatly worn, making the bearing replacement frequency high. Therefore, we propose a bracket structure for the guide wheel. Utility Model Content
[0004] The purpose of the utility model is to provide a support structure of a guide wheel, in which a secondary wheel is longitudinally installed between the side plates above both sides of the main wheel, and the secondary wheel is supported on the outer surface of the main wheel. During use, the force transmitted to the guide wheel and the main wheel will be partially transmitted to the secondary wheel, and distributed to the rotating shaft and bearings of the main wheel and the secondary wheel, thereby reducing the wear of the rotating shaft and bearings of the main wheel, increasing the service life and reducing the frequency of bearing replacement, thereby solving the problems raised in the background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a support structure of a guide wheel, comprising a mounting plate, a side plate, a main wheel and a secondary wheel, wherein two side plates are provided, and the side plates on both sides are vertically fixed on the surface of the mounting plate; the main wheel is rotatably installed below between the side plates through a rotating shaft and a bearing, and the secondary wheel is provided with two secondary wheels and rotatably installed between the side plates on both sides above the main wheel through a rotating shaft and a bearing, and the secondary wheel abuts against the surface of the main wheel; the surfaces of the side plates at both ends of the main wheel are provided with a first through-hole penetrating therethrough, and the outer surface of the side plate of the outer ring of the first through-hole is provided with a A first shaft groove, a first cover plate is installed on the surface of the side plate at the first shaft groove through a first bolt, the rotating shaft of the main wheel passes through the first through-hole into the first shaft groove, and the bearing sleeve of the main wheel is placed on the outer ring of the rotating shaft of the main wheel and placed in the first shaft groove, a second through-hole is opened on the surface of the side plates at both ends of the secondary wheel, a second shaft groove is opened on the outer surface of the side plate of the outer ring of the second through-hole, a second cover plate is installed on the surface of the side plate at the second shaft groove through a second bolt, the rotating shaft of the secondary wheel passes through the second through-hole into the second shaft groove, and the bearing sleeve of the secondary wheel is placed on the outer ring of the rotating shaft of the secondary wheel and placed in the second shaft groove.
[0006] By adopting the above technical solution, the mounting plate is installed at the mounting position of the guide wheel through the mounting hole and the locking bolt, and the main wheel is supported on the inner side of the track to achieve the purpose of guiding and supporting it. The force transmitted to the main wheel will be partially transmitted to the secondary wheel, so that the force is distributed to the rotating shaft and bearings of the main wheel and secondary wheel, reducing the wear on the rotating shaft and bearings and thus increasing the service life.
[0007] Optionally, mounting holes are provided at four corners of the surface of the mounting plate, and the mounting holes run through two sides of the mounting plate.
[0008] By adopting the above technical solution, the installed connecting bolts pass through the mounting plate through the mounting holes on the surface of the mounting plate.
[0009] Optionally, a ring groove is formed around the middle outer ring of the secondary wheel, and the secondary wheel contacts the surface of the baffle ring of the outer ring of the main wheel through the ring groove.
[0010] By adopting the above technical solution, the annular groove is clamped on the outer ring of the arm ring of the main wheel to play a limiting and guiding role.
[0011] Optionally, first screw holes are evenly formed on the surface of the side plate of the outer ring of the first shaft groove, and the first bolt penetrates the first cover plate and is screwed into the first screw hole.
[0012] Optionally, second screw holes are evenly formed on the surface of the side plate of the outer ring of the second shaft groove, and the second bolts penetrate the second cover plate and are screwed into the second screw holes.
[0013] Optionally, the outer ring surfaces of the first cover plate and the second cover plate are both provided with through holes, and the first bolt and the second bolt pass through the first cover plate and the second cover plate through the through holes.
[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0015] 1. The technical solution of the present application is to longitudinally install secondary wheels between the side plates above both sides of the main wheels, and the secondary wheels are supported on the outer surface of the main wheels. During use, the force transmitted to the guide wheel main wheel will be partially transmitted to the secondary wheels and distributed to the rotating shafts and bearings of the main wheels and secondary wheels, thereby reducing the wear of the rotating shafts and bearings of the main wheels, increasing the service life and reducing the frequency of bearing replacement.
[0016] 2. The technical solution of the present application is to provide an annular groove around the outer ring of the secondary wheel, which can adapt to the arm ring of the outer ring of the main wheel to achieve the purpose of positioning and support. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:
[0018] Figure 1This is a schematic diagram of the overall structure of the support structure of the guide wheel of the utility model;
[0019] Figure 2 It is a structural schematic diagram of the support structure of the guide wheel of the utility model.
[0020] In the figure: 1, mounting plate; 11, mounting hole; 2, side plate; 3, main wheel; 4, secondary wheel; 41, ring groove; 5, first through-hole; 51, first shaft groove; 52, first screw hole; 53, first cover plate; 531, first bolt; 6, second through-hole; 61, second shaft groove; 62, second screw hole; 63, second cover plate; 631, second bolt. DETAILED DESCRIPTION
[0021] See also Figure 1-2 The utility model provides a technical solution: a support structure of a guide wheel, including a mounting plate 1, a side plate 2, a main wheel 3 and a secondary wheel 4. Two side plates 2 are provided, and the side plates 2 on both sides are vertically fixed on the surface of the mounting plate 1. The two side plates 2 are arranged parallel to each other. Mounting holes 11 are opened at the four corners of the surface of the mounting plate 1. The mounting holes 11 penetrate through the two sides of the mounting plate 1 so that the mounting plate 1 is tightly attached to the guide wheel installation position of the excavator. The mounting holes 11 cooperate with the mounting bolts to realize the installation and fixation of the mounting plate 1.
[0022] The main wheel 3 is rotatably installed at the bottom between the side plates 2 through the rotating shaft and the bearing. The surfaces of the side plates 2 at both ends of the main wheel 3 are provided with first through-holes 5, and the outer surface of the side plate 2 of the outer ring of the first through-holes 5 is provided with a first shaft groove 51. The first shaft groove 51 is connected with the first through-holes 5, so that the rotating shaft of the main wheel 3 passes through the first through-holes 5 and penetrates into the first shaft groove 51. After the outer ring of the rotating shaft of the main wheel 3 is covered with a bearing, the bearing is clamped and stored in the first shaft groove 51. The surface of the side plate 2 at the first shaft groove 51 is installed by a first bolt 531 There is a first cover plate 53, and the outer ring surface of the first cover plate 53 is provided with through holes. The first bolts 531 are penetrated and connected to the outer ring of the first cover plate 53 through the through holes. The surface of the side plate 2 of the outer ring of the first shaft groove 51 is evenly provided with first screw holes 52. The ends of the first bolts 531 are screwed into the first screw holes 52 to achieve the purpose of installing and fixing the first cover plate 53. When replacing the bearing of the main wheel 3, it is necessary to first unscrew the first bolts 531 and remove the first cover plate 53. After replacement, the first cover plate 53 is installed again by the first bolts 531.
[0023] The secondary wheel 4 is provided with two side plates 2 rotatably installed on both sides above the main wheel 3 through a rotating shaft and a bearing. A ring groove 41 is opened around the middle outer ring of the secondary wheel 4. The secondary wheel 4 contacts the surface of the arm ring of the outer ring of the main wheel 3 through the ring groove 41. The surface of the side plates 2 at both ends of the secondary wheel 4 is provided with a second through-hole 6 penetrating therethrough. The outer surface of the side plate 2 of the outer ring of the second through-hole 6 is provided with a second shaft groove 61. The second shaft groove 61 is communicated with the second through-hole 6, so that the rotating shaft of the secondary wheel 4 passes through the second through-hole 6 and penetrates into the second shaft groove 61. After the outer ring of the rotating shaft of the secondary wheel 4 is covered with a bearing, the bearing is clamped in the second shaft groove 61 and is closed. The second cover plate 63 is installed on the surface of the side plate 2 at the second shaft groove 61 through the second bolt 631, and the outer ring surface of the second cover plate 63 is provided with a through hole, through which the outer ring of the second cover plate 63 is penetrated and connected with the second bolt 631, and the surface of the side plate 2 of the outer ring of the second shaft groove 61 is evenly provided with second screw holes 62, and the end of the second bolt 631 is screwed into the second screw hole 62 to achieve the purpose of installing and fixing the second cover plate 63. When replacing the bearing of the secondary wheel 4, it is necessary to first unscrew the second bolt 631 and remove the second cover plate 63, and then install the second cover plate 63 again through the second bolt 631 after replacement.
[0024] When in use, the mounting plate 1 is fixed to the guide wheel installation position of the excavator through the mounting holes 11 on the surface of the mounting plate 1 and the connecting bolts, so that the arm ring in the middle of the guide wheel is limited and supported in place, and the track chain is supported by the two sides. When the excavator is moving, the guide wheel plays a guiding and supporting role for the crawler track. A part of the force acting on the guide wheel is directly transmitted to the rotating shaft of the main wheel 3 and the bearing at the end, and the other part is transmitted to the auxiliary wheel 4 through the main wheel 3, and then acts on the rotating shaft and the bearing at the end of the auxiliary wheel 4, so that the force is distributed and the force is reduced. The wear of the rotating shaft and bearing of the main wheel 3 can be reduced, thereby reducing the replacement frequency of the bearing and increasing its service life. When the bearing is severely worn and needs to be replaced and maintained, the first bolt 531 or the second bolt 631 can be unscrewed to remove the first cover plate 53 or the second cover plate 63, thereby allowing the bearing on the outer ring of the rotating shaft of the main wheel 3 or the secondary wheel 4 to leak out, making it convenient to take out the bearing from the first shaft groove 51 or the second shaft groove 61 for replacement. After the replacement is completed, the first cover plate 53 or the second cover plate 63 is covered again and fixed by the first bolt 531 or the second bolt 631.
Claims
1. A guide wheel support structure, comprising a mounting plate (1), a side plate (2), a main wheel (3) and a secondary wheel (4), characterized in that: Two side panels (2) are provided, and the side panels (2) on both sides are vertically fixed on both sides of the surface of the mounting plate (1); The main wheel (3) is rotatably mounted below the side plates (2) via a rotating shaft and a bearing, and two auxiliary wheels (4) are provided and rotatably mounted between the side plates (2) on both sides above the main wheel (3) via a rotating shaft and a bearing, and the auxiliary wheels (4) are in contact with the surface of the main wheel (3); The surfaces of the side plates (2) at both ends of the main wheel (3) are each provided with a first through hole (5) penetrating therethrough, the outer surface of the side plate (2) at the outer ring of the first through hole (5) is provided with a first shaft groove (51), the surface of the side plate (2) at the first shaft groove (51) is provided with a first cover plate (53) via a first bolt (531), the rotating shaft of the main wheel (3) passes through the first through hole (5) and enters the first shaft groove (51), and the bearing sleeve of the main wheel (3) is placed on the outer ring of the rotating shaft of the main wheel (3) and placed in the first shaft groove (51) The surfaces of the side plates (2) at both ends of the secondary wheel (4) are each provided with a second through-hole (6) penetrating therethrough, the outer surface of the side plate (2) at the outer ring of the second through-hole (6) is provided with a second shaft groove (61), the surface of the side plate (2) at the second shaft groove (61) is mounted with a second cover plate (63) via a second bolt (631), the rotating shaft of the secondary wheel (4) passes through the second through-hole (6) and enters into the second shaft groove (61), and the bearing sleeve of the secondary wheel (4) is placed on the outer ring of the rotating shaft of the secondary wheel (4) and placed in the second shaft groove (61).
2. A guide wheel support structure according to claim 1, characterized in that: The four corners of the surface of the mounting plate (1) are each provided with mounting holes (11), and the mounting holes (11) penetrate through two sides of the mounting plate (1).
3. The support structure of the guide wheel according to claim 1, characterized in that: The middle outer ring of the secondary wheel (4) is surrounded by an annular groove (41), and the secondary wheel (4) contacts the surface of the baffle ring of the outer ring of the main wheel (3) through the annular groove (41).
4. The support structure of the guide wheel according to claim 1, characterized in that: The surface of the side plate (2) of the outer ring of the first shaft groove (51) is evenly provided with first screw holes (52), and the first bolts (531) penetrate the first cover plate (53) and are screwed into the first screw holes (52).
5. The support structure of the guide wheel according to claim 1, characterized in that: The surface of the side plate (2) of the outer ring of the second shaft groove (61) is evenly provided with second screw holes (62), and the second bolts (631) penetrate the second cover plate (63) and are screwed into the second screw holes (62).
6. The support structure of the guide wheel according to claim 1, characterized in that: The outer ring surfaces of the first cover plate (53) and the second cover plate (63) are both provided with through holes, and the first bolt (531) and the second bolt (631) pass through the first cover plate (53) and the second cover plate (63) through the through holes.