A supporting wheel

Abstract

A supporting wheel includes a wheel body, a side cover and a wheel axle, a bearing supported between the bearing inner ring support surface and the bearing seat, and two side surfaces of the bearing outer ring are positioned between the bearing limit base and the bearing positioning block. The bearing limit base and the bearing positioning block realize the left and right positioning of the bearing. The chain moves along the guide rail to drive the outer ring of the wheel body bearing to rotate, realizing the function that the outer ring of the bearing rotates while the inner ring does not rotate. The service life of the supporting wheel is extended by more than 2 times, the weight of the wheel body is reduced by more than 30%, the manufacturing cost is reduced by more than 20%, and the transportation cost is reduced by more than 20%.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery, and in particular to a track wheel. Background Art

[0002] As the core component of excavator and tank chassis, the performance of track wheels directly affects the reliability and working efficiency of the entire machine.

[0003] This application is an improvement of the previously authorized patent technology by the inventor, which has the advantages of light weight, material saving, cost saving, etc. The names of the prior patent applications are: supporting wheel and its excavator, tank (patent number: 2022 2 3386255.5); a wheel body and its installation tool (patent number: 2023 2 1891542.3), a side cover and its installation and removal tool (patent number: 2023 2 1893047.6), three utility model patents and one invention patent. Summary of the invention

[0004] The embodiment of the present invention provides a track wheel, which can effectively simplify the structure of the track wheel, reduce the cost of the track wheel, and is suitable for heavy-load and large-tonnage excavators and tanks.

[0005] According to a first aspect of the present invention,

[0006] A wheel body is provided, which comprises a side cover seat, a bearing seat, a bearing limiting base and a wheel axle channel, wherein guide rails are located at both sides of the wheel body, and the wheel body is formed in one piece.

[0007] The side cover seat is used for installing the side cover.

[0008] The bearing seat is used for installing the bearing.

[0009] The bearing limiting base is used for limiting the side surface of the bearing outer ring.

[0010] The guide rail is used for limiting the position of the crawler track.

[0011] Furthermore, the side cover seat has a groove for installing a sealing ring.

[0012] According to a second aspect of the present invention,

[0013] A side cover is provided, which includes: a fixing seat, and a connecting part connecting a bearing positioning block and the fixing seat, wherein the bearing positioning block, the fixing seat and the connecting part are integrally formed, the fixing seat has at least one fixing screw hole for screw fastening, and the fixing seat has a first positioning hole for latch positioning.

[0014] According to a third aspect of the present invention,

[0015] Provided is a wheel axle, with a bearing inner ring support portion and a side cover support portion respectively designed on both sides of the wheel axle, and second positioning holes are opened at both ends of the wheel axle, the second positioning holes are used for positioning the side cover, and the positioning of the side cover includes: positioning of a fixing seat and a bearing positioning block.

[0016] Further, the bearing inner ring support portion is balanced on the wheel axle.

[0017] Further, the side cover support portion is balanced on the wheel axle.

[0018] Further, the bearing inner ring support portion and the side cover support portion are balanced.

[0019] According to a fourth aspect of the present invention,

[0020] Provided is a supporting wheel, comprising a first aspect, a second aspect and a third aspect, wherein a bearing is supported between a bearing inner ring support surface and a bearing seat, and two side surfaces of a bearing outer ring are positioned between a bearing limiting base and a bearing positioning block.

[0021] The bearing limit base and the bearing positioning block realize the left and right positioning of the bearing.

[0022] The chain moves along the guide rail to drive the outer ring of the wheel bearing to rotate, thereby realizing the function that the outer ring of the bearing rotates while the inner ring does not rotate.

[0023] Furthermore, there is a bearing inner ring positioning sleeve between the bearing and the side cover, one end of the bearing inner ring positioning sleeve abuts against the bearing inner ring, and the other end abuts against the side cover. The bearing inner ring positioning sleeve is used to limit the sliding of the bearing along the bearing rolling groove, thereby increasing the service life of the bearing.

[0024] Furthermore, the wheel body, side cover and wheel axle are preferably manufactured by forging process, followed by casting process, and finally by melting process.

[0025] Furthermore, the bearings are: deep groove ball bearings, cylindrical roller bearings, self-aligning ball bearings, angular contact bearings, self-aligning roller bearings, tapered roller bearings, fisheye bearings, ball bearings, pressure ball bearings, etc.

[0026] Based on the above technical solution, the supporting wheel embodiment of the present invention has the following beneficial effects:

[0027] 1. Regarding the wheel body, the bearing seats at both ends of the wheel body are designed to be hollow inward, which reduces the weight of the wheel body by more than 30%, the manufacturing cost by more than 20%, and the transportation cost by more than 20%.

[0028] 2. Regarding the side cover, after the bearing locating seat and the fixing seat are connected with the help of the connecting part, the entire side cover can support the wheel axle while also positioning the outer ring of the bearing, preventing abnormal wear of the bearing and track caused by bearing displacement or wheel displacement, effectively increasing the service life of the bearing by more than 30% and the service life of the track by more than 10%.

[0029] 3. Regarding the axle, the bearing inner ring support part and the side cover support part are designed to be balanced on the axle, which is conducive to processing, reduces processing procedures, saves processing costs, and the yield rate reaches 99.99%.

[0030] 4. Regarding the supporting wheels, while meeting the above beneficial effects:

[0031] 4.1. In terms of positioning, the fixing seat of the side cover has a first positioning hole for positioning the pin. When the pin is inserted into the first positioning hole and the second positioning hole, the side cover and the wheel axle are fixed as a whole under the action of the pin, so that the left and right positioning of the bearing is achieved between the bearing positioning block and the bearing limit base.

[0032] 4.2. In terms of load, bearings replace the bearing caps, and the load of the track rollers is borne by the bearings. The bearings with corresponding bearing capacity can be selected according to the matching body. This can increase the bearing capacity by at least 5 times that of the track rollers, solving the problem of large gaps in the original track rollers and locking of the track rollers after the load exceeds the limit. It also solves the problem that when the chain passes through the wheel body, the wheel body cannot rotate due to the locking of the track roller cap, and the chain rubs the wheel body like a file, making the track roller scrapped, effectively extending the overall life of the track roller by more than 2 times.

[0033] 4.3. In terms of assembly, the bearing is installed in the wheel body, the axle passes through the inner ring of the bearing and is inserted into the wheel body, the two ends of the wheel body are inserted into the side covers, and are fixed to the side covers by the pins or fixing screws of the side covers. There is no need for tile cover assembly and sealing devices between the wheel body and the axle. Therefore, this technology reduces the steps of tiles and positioning rings to a minimum, effectively improves assembly speed, saves costs, and improves efficiency.

[0034] 4.4. In terms of the string movement, one end of the bearing inner ring locating sleeve is against the bearing inner ring, and the other end is against the side cover. The bearing inner ring locating sleeve is used to limit the sliding of the bearing along the bearing rolling groove, thereby increasing the service life of the bearing by more than 30%. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a schematic diagram of the wheel body of the present invention;

[0037] Figure 2 It is a schematic diagram of the side cover of the present invention;

[0038] Figure 3 A schematic diagram of the axle of the present invention;

[0039] Figure 4 A diagram of a track wheel assembly of the present invention;

[0040] Figure 5 A schematic diagram of a bearing inner ring positioning sleeve of the present invention;

[0041] Figure 6 Assembly diagram of the track roller with the bearing inner ring positioning sleeve of the present invention;

[0042] Figure 7 Assembly diagram of the track roller with seal of the present invention;

[0043] Figure 8 The assembly diagram of the track roller with the bearing inner ring positioning sleeve and the sealing member of the present invention.

[0044] In the figure: 100, wheel body; 110, side cover seat; 120, bearing seat; 130, bearing limit base; 140, wheel axle channel; 150, guide rail; 160, groove; 200, side cover; 210, fixing seat; 220, bearing positioning block; 230, connecting part; 240, fixing screw hole; 250, first positioning hole; 300, wheel axle; 310, bearing inner ring support part; 320, side cover support part; 330, second positioning hole; 400, bearing; 410, outer ring; 420, inner ring; 500, seal; 600, bearing inner ring positioning sleeve. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] The present invention provides a track wheel, which can effectively simplify the structure of the track wheel, reduce the cost of the track wheel, and is suitable for heavy-load and large-tonnage excavators and tanks.

[0047] like Figure 1 As shown,

[0048] A wheel body 100, the wheel body 100 includes: a side cover seat 110, a bearing seat 120, a bearing limit base 130 and a wheel axle channel 140, and a guide rail 150 is located on both sides of the wheel body 100, and the wheel body 100 is formed in one piece. The wheel body 100, the bearing seats 120 at both ends of the wheel body 100 are hollow inwardly designed, which reduces the weight of the wheel body 100 by more than 30%, reduces the manufacturing cost by more than 20%, and reduces the transportation cost by more than 20%. The side cover seat 110 is used for side cover installation. The bearing seat 120 is used for the installation of the bearing 400. The bearing limit base 130 is used for limiting the side of the bearing outer ring 410. The guide rail 150 is used for limiting the track.

[0049] like Figure 2 Shown

[0050] A side cover 200, the side cover 200 comprises: a fixing seat 210, and a connecting portion 240 connecting a bearing positioning block 220 and a fixing seat 230, the bearing positioning block 220 and the fixing seat 210 and the connecting portion 240 are integrally formed, the fixing seat 210 has at least one fixing screw hole 240 for screw fastening, and the fixing seat 210 has a first positioning hole 250 for latch positioning. The fixing seat 210 of the side cover 200 has a first positioning hole 250 for latch positioning, when the latch is inserted into the first positioning hole 250 and the second positioning hole 330, the left and right positioning of the bearing 400 is achieved between the bearing positioning block 220 and the bearing limiting base 130. The entire side cover 200 can realize the positioning of the outer ring of the bearing 400 while supporting the wheel shaft 300, prevent the bearing 400 and the crawler from abnormal wear caused by displacement of the bearing 400 or displacement of the wheel body 100, effectively increase the service life of the bearing 400 by more than 30%, and increase the service life of the crawler by more than 10%.

[0051] like Figure 3 Shown

[0052] A wheel axle 300 is provided, wherein a bearing inner ring support portion 310 and a side cover support portion 320 are respectively designed on both sides of the wheel axle 300, and second positioning holes 330 are opened at both ends of the wheel axle 300, and the second positioning holes 330 are used for positioning the side cover 300, and the positioning of the side cover 300 includes: positioning of a fixing seat 210 and a bearing positioning block 220. The wheel axle 300, the bearing inner ring support portion 310 and the side cover support portion 320 are balancedly designed on the wheel axle 300, which is convenient for processing, reduces processing procedures, saves processing costs, and has a yield rate of 99.99%.

[0053] The bearing inner ring support portion 310 is balanced on the wheel axle 300 .

[0054] The side cover support portion 320 is balanced on the axle 300 .

[0055] The bearing inner ring support portion 310 and the side cover support portion 320 are balanced.

[0056] The first embodiment, as Figure 4 As shown,

[0057] A track roller includes a wheel body 100, a side cover 200 and a wheel axle 300, a bearing 400 is supported between a wheel axle inner ring support portion 310 and a bearing seat 120, and two side surfaces of a bearing outer ring 410 are positioned between a bearing limit base 130 and a bearing positioning block 220. The bearing limit base 130 and the bearing positioning block 220 realize left and right positioning of the bearing 400. The chain moves along the guide rail 150 to drive the wheel body 100 and then drive the bearing outer ring 420 to rotate, realizing the function that the bearing outer ring 420 rotates while the inner ring 410 does not rotate. In terms of positioning, when the latch is inserted into the first positioning hole 250 and the second positioning hole 330, under the action of the latch, the side cover 200 and the wheel axle 300 are fixed as one, so that the left and right positioning of the bearing 400 is achieved between the bearing positioning block 220 and the bearing limit base 130; in terms of load, the bearing 400 replaces the bearing cover, and the force of the supporting wheel is borne by the bearing 400. The bearing 400 can select a bearing 400 with a corresponding bearing capacity according to the matching body, which is at least 5 times higher than that of the bearing cover, solving the problem that the gap of the original bearing cover is large and the bearing cover is locked after the load exceeds The drawback of the invention is that the wheel body 100 cannot rotate due to the locking of the tile cover when the chain passes through the wheel body 100, and the chain rubs the wheel body 100 like a file, making the supporting wheel scrapped; in terms of assembly, the bearing 400 is installed in the wheel body 100, the axle 300 passes through the inner ring 410 of the bearing and is inserted into the wheel body 100, and the two ends of the wheel body 100 are inserted into the side cover 200, and are fixed to the side cover 200 by the pin or fixing screw of the side cover 200. The tile cover assembly and sealing device between the wheel body 100 and the axle 300 are not required, so the technology at least reduces the steps of the tile and the positioning ring. In the present invention, the conventional limiting structure for the bearing 400 is omitted, such as limiting by an inner spring or an outer spring combined with a slot, or limiting by fastening a screw and a limiting plate to the outside of the bearing.

[0058] The wheel body 100, the side cover 200 and the wheel axle 300 are preferably manufactured by forging, followed by casting, and finally by melting. In forging, a solid material is heated and forged into an integral part on a forging machine, and the rough surface parts are trimmed by machining to obtain the wheel body 100 and the side cover 200. The wheel body 100 and the side cover 200 are manufactured by forging to improve durability. The present invention preferably uses a multi-directional hammer forging machine. The casting process and the turning process are known processes and are not described here. In order to save costs, the wheel body can adopt a left-right symmetrical structure and then be welded into one body. This method can reduce the cost of materials and forging processes.

[0059] The second embodiment, on the basis of satisfying the structure of the first embodiment, provides a track roller with a bearing inner ring positioning sleeve. Figure 5 , 6 shown.

[0060] The bearing inner ring positioning sleeve 600 is a hollow circular sleeve, installed between the bearing 300 and the side cover 200, one end of the bearing inner ring positioning sleeve 600 abuts against the bearing inner ring 410, and the other end abuts against the side cover 200, and the bearing inner ring positioning sleeve 600 is used to limit the movement of the bearing 400 and improve the service life of the bearing 400. In more embodiments, the bearing 400 can be: a deep groove ball bearing, a cylindrical roller bearing, a self-aligning ball bearing, a needle bearing, an angular contact bearing, a self-aligning roller bearing or a tapered roller bearing, etc.

[0061] The third embodiment provides a track roller with a seal on the basis of satisfying the structure of the first embodiment.

[0062] The side cover seat 110 has a groove 160. Figure 1 The groove 160 is used for installing the seal 500. Figure 7 shown.

[0063] The fourth embodiment, on the basis of satisfying the structure of the first embodiment, provides a track roller with a bearing inner ring positioning sleeve and a sealing member, such as Figure 8 The third embodiment is also a combination of the first embodiment, the second embodiment and the third embodiment.

[0064] The embodiments of the present invention are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A track wheel, characterized in that the wheel body include: The side cover seat, bearing seat, bearing limit base and wheel axle channel, the guide rails are located on both sides of the wheel body, and the wheel body is formed in one piece. The side cover seat is used for side cover installation. The bearing seat is used for installing the bearing. The bearing limiting base is used to limit the side of the bearing outer ring. The guide rail is used for limiting the position of the crawler track.

2. The track roller according to claim 1, characterized in that: The side cover seat has a groove for installing a sealing ring.

3. A track roller, characterized in that the side cover include: A fixing seat and a connecting portion connecting the bearing positioning block and the fixing seat, wherein the bearing positioning block, the fixing seat and the connecting portion are integrally formed, the fixing seat has at least one fixing screw hole for screw fastening, and the fixing seat has a first positioning hole for latch positioning.

4. A track wheel, characterized in that: The two sides of the axle are respectively designed with a bearing inner ring support part and a side cover support part. The two ends of the axle are provided with a second positioning hole, which is used for positioning the side cover. The positioning of the side cover includes: positioning of the fixing seat and the bearing positioning block.

5. The track roller according to claim 4, characterized in that: The bearing inner ring support is balanced on the wheel axle.

6. The track roller according to claim 4, characterized in that: The side cover support is balanced on the wheel axle.

7. The track roller according to claim 4, characterized in that: The bearing inner ring support part and the side cover support part are balanced.

8. The supporting wheel according to claim 4 is characterized in that the bearing is supported between the supporting surface of the inner ring of the bearing and the bearing seat, and the two side surfaces of the outer ring of the bearing are positioned between the bearing limiting base and the bearing positioning block.

9. The track roller according to claim 8, characterized in that: The bearing limit base and the bearing positioning block realize the left and right positioning of the bearing.

10. The track roller according to claim 8, characterized in that: A bearing inner ring positioning sleeve is arranged between the bearing and the side cover.

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