Wheel, side cover, wheel body and its sealing, fine adjustment, oiling device and mounting and dismounting tools and methods

Abstract

A kind of supporting wheel, wheel body (1) includes: guide rail (120) and wheel axle (111), the guide rail (120) around both sides of wheel body and the wheel axle (111) in the center of both sides of wheel body are integrally formed;The support seat (112) formed by the recessed cavity after integrally forming between the guide rail (120) and wheel axle (111). Side cover (2) includes: bearing seat (262) and fixed seat (242) and the connecting part (252) connecting bearing seat and fixed seat, bearing seat and fixed seat and connecting part are integrally formed;The fixed seat at least one fixed screw hole (24) for screw fastening, two side covers are installed in support seat (112) respectively;Bearing (3), supported between the outer circumferential surface of wheel axle and the inner wall of bearing seat, chain moves along guide rail and drives wheel body and wheel axle synchronous rotation on the inner ring (302) of bearing, realize bearing inner ring rotation, the function of outer ring (301) not rotation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering machinery, in particular to a supporting wheel, a side cover, a wheel body, and a sealing, fine adjustment, and oiling device thereof, as well as a mounting and dismounting tool and method. BACKGROUND

[0002] As a core component of excavators and tank chassis, the performance of the supporting wheel directly affects the reliability and working efficiency of the whole machine.

[0003] At present, in the related art, the supporting wheel includes a wheel body, an axle, a bearing, an end cover, a floating oil seal, a rubber ring, and a pin. The bearing is pressed into the wheel body, the axle penetrates into the bearing, the floating oil seal and the rubber ring are respectively installed into the wheel body, and the two end covers are respectively fixed with the axle through the pin. The assembly process of this structure is complex, the cost is high, and it is suitable for heavy-load large-tonnage excavators. Technical document CN115214813A discloses a supporting wheel including a wheel body, an axle, and two box-type sealing members. The supporting wheel includes two bearings and two retainer rings. The two bearings are respectively arranged on the two sides of a first shoulder, and the two retainer rings are respectively arranged on the sides of the corresponding bearings away from the first shoulder. This structure is still a combination of the wheel body and the axle. The structure between the wheel body and the axle, and the axle length is greater than the wheel body length in

[0053] to facilitate the connection of the axle with the frame or other components. In this structure, the wheel body rotates under the driving of the chain, but the axle is used to support the rotation of the wheel body. This structure cannot realize heavy-load operation.

[0004] It should be noted that the information disclosed in the background section of the present application is only intended to increase the understanding of the overall background of the present application and should not be regarded as acknowledging or implying in any form that this information constitutes prior art known to those skilled in the art. SUMMARY

[0005] The embodiments of the present application provide a supporting wheel, a side cover, a wheel body, and a sealing, fine adjustment, and oiling device thereof, as well as a mounting and dismounting tool and method. The structure of the supporting wheel can be effectively simplified, the cost of the supporting wheel can be reduced, and the supporting wheel is suitable for heavy-load large-tonnage excavators and tanks.

[0006] According to a first aspect of the present application,

[0007] A wheel body is provided. The wheel body includes a guide rail and an axle. The guide rail around the two sides of the wheel body and the axle in the center of the two sides of the wheel body are integrally formed with the wheel body. A support seat formed by a concave cavity after the integral forming between the guide rail and the axle.

[0008] According to a second aspect of the present application,

[0009] The side cover comprises a bearing seat, a fixing seat, and a connecting part connecting the bearing seat and the fixing seat, the bearing seat, the fixing seat and the connecting part are integrally formed, and the fixing seat has at least one fixing screw hole for screw fastening.

[0010] According to a third aspect of the present application,

[0011] The bearing is supported between the outer circumferential surface of the axle and the inner wall of the bearing seat, the chain drives the wheel body and the axle to rotate synchronously on the inner ring of the bearing along the guide rail, and the inner ring of the bearing rotates while the outer ring does not rotate.

[0012] Further, the inside of the support seat is a limiting device I.

[0013] Further, the bearing seat extends inwardly a limiting device II.

[0014] Further, the inner ring of the bearing is limited between the limiting device I and the limiting device II.

[0015] Further, the limiting device I extends from the inner ring to the outer ring of the bearing, and the longest part does not touch the outer ring.

[0016] Further, the limiting device II extends from the outer ring to the inner ring of the bearing, and the longest part does not touch the inner ring.

[0017] Further, the limiting device I and the limiting device II are designed as rough surfaces or textured surfaces.

[0018] Further, the center of the side surface of the axle is further provided with a side cover mounting positioning screw hole, and the screw hole is an internal thread structure.

[0019] Further, the axial length of the axle is less than or equal to the axial length of the wheel body.

[0020] Further, the wheel body and the axle are integrally formed.

[0021] Further, the wheel body and the side cover are preferably forged, followed by casting, and finally smelting or turning.

[0022] According to a fourth aspect of the present application, a fine adjustment device for adjusting the axial displacement of the axle is further included, the fine adjustment device is screwed into the fine adjustment screw hole, and the fine adjustment device abuts against the axle.

[0023] According to a fifth aspect of the present application, the side cover further includes a fine adjustment screw hole for adjusting the axial displacement of the axle, a fine adjustment device is screwed into the fine adjustment screw hole, and a sliding device is arranged between the fine adjustment device and the axle abutting against the axle.

[0024] Further, a sliding device is arranged between the abutting wheel axle and the fine adjustment device.

[0025] Further, the center point of the fine adjustment device, the fine adjustment screw hole and the wheel axle are in the same horizontal.

[0026] Further, the thread of the fine adjustment device and the thread of the fine adjustment screw hole are combined and matched.

[0027] Further, the sliding device is a ball bearing, a ball, a needle bearing, a pressure ball bearing, a limit block, etc.

[0028] Further, the wheel axle has a valve seat extending outward, and the sliding device is sleeved on the outer diameter of the valve seat; or the wheel axle has a valve seat extending inward, and the sliding device is sleeved in the inner diameter of the valve seat.

[0029] Further, a fine adjustment device is arranged, the side cover is provided with a fine adjustment screw hole, the fine adjustment device is screwed into the fine adjustment screw hole, and the fine adjustment device abuts against the elastic device.

[0030] Further, a pressure plate is arranged between the sliding device and the fine adjustment device; or the pressure plate is arranged between the sliding device and the elastic device.

[0031] Further, an elastic device is arranged between the sliding device and the fine adjustment device.

[0032] According to the sixth aspect of the present application, the wheel body is provided with a seat for mounting a sealing element at the joint of the side cover and the wheel body, and the seat is a groove for mounting the sealing element.

[0033] According to the seventh aspect of the present application, the side cover is provided with a seat for mounting a sealing element at the joint of the side cover and the wheel body, and the seat is a groove for mounting the sealing element.

[0034] Further, the outer ring of the sealing element is in interference fit with the groove.

[0035] According to the eighth aspect of the present application, the side cover is provided with an oil channel.

[0036] According to the ninth aspect of the present application, the dustproof cap is provided with an oil channel.

[0037] According to the tenth aspect of the present application, the fine adjustment device is provided with an oil channel.

[0038] Further, one end of the oil channel leads to the cavity between the side cover and the wheel body.

[0039] Further, a one-way valve is installed at the other end of the oil channel.

[0040] Further, the oiling channel of the fine adjustment device is communicated with the oiling channel of the dustproof cap.

[0041] Further, the dustproof cap is fastened to the outside of the fine adjustment device and is attached to the fine adjustment device.

[0042] According to an eleventh aspect of the present application, a digging machine is provided, comprising the above-mentioned road wheel.

[0043] According to a twelfth aspect of the present application, a tank is provided, comprising the above-mentioned road wheel.

[0044] According to a thirteenth aspect of the present application, the pull rod and the bearing tension nut are combined in a threaded matching structure, and the diameter of the pull rod is smaller than the inner diameter of the fine adjustment hole.

[0045] According to a fourteenth aspect of the present application, the push rod is combined in a threaded matching structure with the fine adjustment hole.

[0046] Further, the pull rod or the push rod is integrated with the pressure sheet.

[0047] Further, the diameter of the initial end of the push rod is smaller than the inner diameter of the positioning screw hole.

[0048] According to a fifteenth aspect of the present application, the side cover mounting screw and the side cover pressure nut are combined in a threaded matching structure.

[0049] According to a sixteenth aspect of the present application, the side cover mounting screw is combined in a threaded matching structure with the positioning screw hole.

[0050] According to a seventeenth aspect of the present application, the side cover push rod is combined in a threaded matching structure with the fine adjustment hole.

[0051] Further, the side cover push rod is the fine adjustment device.

[0052] Further, the diameter of the initial end of the side cover push rod is smaller than the inner diameter of the positioning screw hole.

[0053] Based on the above technical solutions, the road wheel embodiment of the present application has the following beneficial effects:

[0054] 1. The wheel body and the wheel shaft are integrally formed to realize synchronous rotation of the wheel shaft and the wheel body, effectively increase the load bearing capacity of the supporting wheel and reduce the installation process of the wheel shaft and the wheel body. Regarding the load, the bearing replaces the tile cover, and the stress bearing of the supporting wheel is borne by the bearing. The bearing can select the corresponding bearing according to the matching body, which at least improves the bearing capacity by more than 5 times compared with the tile cover, solves the problems of large gap between the tile covers and tile cover locking when the load exceeds, and solves the problem that the chain rubs the wheel body like a file when the chain passes through the wheel body due to the tile cover locking, causing the supporting wheel to be scrapped. Regarding the reduction of the installation of the wheel shaft and the wheel body, the wheel body and the wheel shaft of the prior art are separated, the wheel shaft is inserted into the entire wheel body, and then the side cover is inserted. The side cover is fixed on the side cover by the latch or fixing screw. Therefore, the present technology at least reduces the steps of inserting the wheel shaft into the wheel body and the steps of fixing the wheel shaft to the side cover latch.

[0055] 2. The fixed seat of the side cover is provided with a fixed screw hole, and the fixed screw hole is used for fixing the side cover on the carrier. After the two side covers are fixed on the carrier (test stand, excavator, tank), the bearing can be limited, and the chain drives the wheel body and the wheel shaft to rotate synchronously on the bearing.

[0056] 3. The cooperation of the wheel shaft and the fine adjustment device prevents the axial displacement of the wheel shaft itself. The use of the fine adjustment structure in the present application not only prolongs the service life of the bearing and the sealing element by preventing the displacement of the wheel shaft, but also realizes the disassembly function of the side cover and the easy installation function of the bearing by means of the fine adjustment device and the fine adjustment screw hole, reducing the damage to the bearing itself and the damage to the bearing seat raceway during the installation process of the bearing.

[0057] 4. The design of the wheel shaft side cover installation positioning screw hole not only realizes the convenient installation of the side cover, but also realizes the positioning of the wheel shaft; it is beneficial to save cost, improve efficiency and prolong the service life of the bearing.

[0058] 5. The axial length of the wheel shaft is less than or equal to the axial length of the wheel body, so as to realize large load bearing at the shaft end, reduce the deformation of the wheel shaft and prolong the service life of the sealing element.

[0059] 6. The dustproof cap realizes the dustproof of the oil filling one-way valve and the positioning of the fine adjustment device. BRIEF DESCRIPTION OF DRAWINGS

[0060] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0061] Figure 1 It is a schematic diagram of the wheel body of the present application.

[0062] Figure 2 A side cover of the present application;

[0063] Figure 3 A wheel body and side cover combination of the present application;

[0064] Figure 4 A fine adjustment straight top of the present application;

[0065] Figure 5 A fine adjustment ball sliding device of the present application;

[0066] Figure 6 A fine adjustment planar bearing sliding device of the present application;

[0067] Figure 7 A limit block sliding device of the present application;

[0068] Figure 8 A pressure sliding device of the present application;

[0069] Figure 9 A self-adjusting ball sliding device of the present application;

[0070] Figure 10 A self-adjusting planar bearing sliding device of the present application;

[0071] Figure 11 A self-adjusting ball sliding device of the present application;

[0072] Figure 12 A self-adjusting planar bearing sliding device of the present application;

[0073] Figure 13 A spring sliding device of the present application;

[0074] Figure 14 A transverse arrangement seal of the present application;

[0075] Figure 15 A vertical arrangement single seal of the present application;

[0076] Figure 16 A vertical arrangement double seal of the present application;

[0077] Figure 17 A transverse and vertical combination arrangement seal of the present application;

[0078] Figure 18 A pull-out bearing assembly of the present application;

[0079] Figure 19 A press-in bearing assembly of the present application;

[0080] Figure 20 The installation diagram of the side cover of the invention;

[0081] Figure 21 The installation diagram of the side cover of the invention;

[0082] Figure 22 The disassembly diagram of the side cover of the invention;

[0083] Figure 23 The disassembly diagram of the side cover of the invention;

[0084] Figures 24-28 The CAD line profile of the invention.

[0085] In the figure:

[0086] 1, wheel body; 11, side cover installation positioning screw hole; 12, sealing element; 111, wheel shaft; 112, support seat; 113, limiting device one; 120, guide rail; 2, side cover; 21, fine adjustment device; 211, elastic device; 22, dustproof cap; 23, fine adjustment screw hole; 24, fixed screw hole; 242, fixed seat; 252, connecting part; 262, bearing seat; 263, limiting device two; 3, bearing; 301, outer ring; 302, inner ring; 31, sliding device; 311, pressure disc; 312, valve seat; 32, pull rod; 33, push rod; 321, pressure sheet; 322, bearing tension nut; 41, side cover installation screw; 411, side cover installation nut; 412, side cover exit push rod; side cover pressure nut 413. DETAILED DESCRIPTION

[0087] The technical solutions in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative, but not as any limitation on the invention and its application or use. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the invention.

[0088] The invention provides a supporting wheel, a side cover, a wheel body, and sealing, fine adjustment, and oiling devices thereof, as well as installation and disassembly tools and methods, which can effectively simplify the structure of the supporting wheel and reduce the cost of the supporting wheel, and are suitable for heavy-load large-tonnage excavators and tanks.

[0089] As Figure 1 , 2 , 3, as shown in

[0090] A wheel body 1, the wheel body 1 includes: guide rail 120 and wheel shaft 111, the guide rail 120 around both sides of the wheel body 1 and the wheel shaft 111 in the center of both sides of the wheel body 1 are integrally formed with the wheel body 1;The support seat 112 formed by the concave cavity after the integrally formed between the guide rail 120 and the wheel shaft 111, the inside of the support seat 112 is the limiting device one 113.The limiting device one 113 extends from the inner ring 302 to the outer ring 301 of the bearing 3, the longest does not touch the outer ring 301, this design changes the limiting mode of the traditional bearing, in the case of not touching the inner ring, the limiting of the bearing inner ring is supported to the maximum extent, and the noise generated by the bearing rotation is effectively reduced.The remaining part of the limiting device one 113 beyond the inner ring 302 or the limiting device one adopts rough surface or texture surface design, which is more beneficial to the elimination of the noise of the bearing 3.

[0091] A side cover 2, the side cover 2 includes: bearing seat 262 and fixed seat 242 and connecting part 252 connecting the bearing seat 262 and fixed seat 242, the bearing seat 262 and fixed seat 242 and connecting part 252 are integrally formed, the bearing seat 262 extends inwardly a limiting device two 263.The present application benefits from, the outer diameter of the connecting part 252 is smaller than the bearing seat 262 and the fixed seat 242, the density of the connecting part 252 after this integrated forming is higher, which is beneficial to improve the service life of the connecting part 252, at the same time, because the inner diameter of the connecting part 252 is smaller than the inner diameter of the bearing seat 262, therefore, the bearing 3 can be limited and the connecting force can be increased.The limiting device two 263 extends from the outer ring 301 to the inner ring 302 of the bearing 3, the longest does not touch the inner ring 302, this design changes the limiting mode of the traditional bearing, in the case of not touching the inner ring, the stress of the bearing outer ring is protected to the maximum extent, and the noise generated by the bearing rotation is effectively reduced.The remaining part of the limiting device two 263 beyond the outer ring 301 or the limiting device two adopts rough surface or texture surface design, which is more beneficial to the elimination of the noise of the bearing 3.

[0092] A supporting wheel, including the wheel body 1 and the side cover 2, two side covers 2 are respectively installed in the support seat 112;The bearing 3 is supported between the outer peripheral surface of the wheel shaft 111 and the inner wall of the bearing seat 262, and is limited in the limiting device one 113 and the limiting device two 263;The fixed seat 242 is provided with a fixed screw hole 24, and the fixed screw hole 24 is used for fixing the side cover 2 on the carrier, after the two side covers 2 are fixed on the carrier, the inner ring 302 of the bearing 3 is limited between the limiting device one 113 and the limiting device two 263, the chain moves along the guide rail 120 to drive the wheel body 1 and the wheel shaft 111 to rotate synchronously on the inner ring 302 of the bearing 3, realize the rotation of the bearing inner ring 302, the outer ring 301 does not rotate.In the present application, the limiting structure of the conventional bearing is omitted, such as limiting by inner spring or outer spring combined with clamping groove, or limiting by involving screw plus limiting piece fastened on the outside of the bearing.

[0093] The process can adopt forging or casting and turning process. The forging is made by heating solid material on a forging machine to form a whole, and the surface roughness is trimmed by machining to obtain the wheel body 1 and the side cover 2. The wheel body 1 and the side cover 2 adopt the forging process to improve the durability, and the wheel body 1 is integrally formed with the wheel shaft 111 to realize the synchronous rotation of the wheel shaft 1 and the wheel body 111, effectively increasing the load and reducing the installation process and the welding caused by the wheel shaft 111 and the wheel body 1. The present application preferably adopts a multi-directional hammer forging machine. The casting process and the turning process are known processes and will not be described here. In order to save costs, the wheel body can adopt a left-right symmetrical structure and be welded as a whole, which can reduce the material and forging process costs.

[0094] In more embodiments, the bearing 3 can be: deep groove ball bearing, cylindrical roller bearing, angular contact ball bearing, needle bearing, angular contact bearing, angular contact roller bearing or tapered roller bearing, etc.

[0095] Fine adjustment structure, such as Figures 4-10 ,

[0096] As shown in Figure 4 , in some embodiments, the side cover 2 further comprises a fine adjustment screw hole 23 for adjusting the axial displacement of the wheel shaft 111, and a fine adjustment device 21 is screwed into the fine adjustment screw hole 23, the fine adjustment device 21 abuts against the wheel shaft 111, and the center point of the fine adjustment device 21, the fine adjustment screw hole 23 and the wheel shaft 111 are in the same horizontal plane. The surface of the fine adjustment device 21 in contact with the wheel shaft 111 can be a plane, or an arc surface. If it is an arc surface, the arc surface can be inserted into the center point of the wheel shaft 111 and exert force around the center of the wheel shaft 111. This structure can prevent the wheel shaft from jumping and damaging the wheel body 1 and the side cover 2 in the case of bearing damage. The assembled supporting wheel is fixed to the carrier by means of the fixing screw hole 24; after the fine adjustment device 21 is rotated and abuts against the wheel shaft 111, the fine adjustment device 21 is retreated in the opposite direction by a certain distance; the above operations are performed synchronously on both sides, so that the bearing 3 has no any play gap, but can rotate flexibly as standard.

[0097] As shown in Figure 5 , 6, 7, 8, in some embodiments, the side cover 2 further comprises a fine adjustment screw hole 23 for adjusting the axial displacement of the axle 111, a fine adjustment device 21 is screwed into the fine adjustment screw hole 23, a sliding device 31 is arranged between the axle 111 and the fine adjustment device 21, and the center points of the fine adjustment device 21, the fine adjustment screw hole 23 and the axle 111 are on the same horizontal line. When the sliding device 31 is a ball, the axle 111 has an inwardly recessed arc-shaped valve seat, the fine adjustment device 21 also has an inwardly recessed arc-shaped valve seat, and the valve seats are used to support the positioning of the ball; when the sliding device 31 is a needle bearing, the axle 111 has an inwardly recessed valve seat, the valve seat is an inward step, the inner diameter of the sliding seat is slightly larger than the outer diameter of the needle bearing, and the needle bearing is embedded in the valve seat; when the sliding device 31 is a limit block, one side of the limit block has a recess, which is used to support the insertion of the fine adjustment screw 21, and there is a small gap between the recess and the fine adjustment device 21, the other side of the limit block abuts against the axle 111, and the other end abuts against the fine adjustment device 21; when the sliding device 31 is a pressure ball bearing, the axle 111 has an outwardly protruding valve seat 312, the pressure ball bearing is sleeved on the outer diameter of the valve seat, one end of a pressure disc 311 abuts against the sliding device 31, and the other end abuts against the fine adjustment device 21, and the pressure disc 311 is U-shaped. The assembled supporting wheel is fixed on the carrier by means of the fixing screw hole 24; after the fine adjustment device 21 rotates to push the sliding device 31 to abut against the axle 111, the fine adjustment device 21 is retreated in the opposite direction by a certain distance; the above operations are performed synchronously on both sides, so that the bearing 3 has no any displacement gap, but can rotate flexibly as a standard.

[0098] The threads of the fine adjustment device 21 and the fine adjustment screw hole 23 are combined structures, the fine adjustment device 21 can be rotated by force to realize the functions of extending inwardly or withdrawing outwardly in the fine adjustment screw hole, and the limiting of the axle 111 is realized by rotating the extension or withdrawal of the fine adjustment screw 21. The above design can effectively reduce the side impact of displacement displacement on the bearing 3, thereby prolonging the service life of the bearing 3, at the same time, ensuring that the chain is on the same working surface, reducing the swinging of the chain, and prolonging the service life of the chain.

[0099] As Figures 9-13As shown, the adaptive type, in some embodiments, also includes a resilient device 211 for adjusting the axial displacement of the axle 111, a sliding device 31 is arranged against the axle 111 and the resilient device 211, and the other end of the resilient device 211 is against the inside of the side cover 2. In another scheme, a sliding device 31, the sliding device 31 is a pressure ball bearing, the axle 111 has a valve seat 312 extending outward, the pressure ball bearing is sleeved on the outer diameter of the valve seat, one end of the resilient device 211 is against the sliding device 31, and the other end is against the inside of the side cover 2. The other end of the resilient device 211 in the adaptive type case can also be sleeved into the fine adjustment screw hole 23 and against the dust cap 22. After the side cover is installed, the axle 111 is centered based on the thrust of the resilient device 211, and this design adapts to medium and light loads. When the chain or guide rail 120 is worn, when a certain chain link of the chain is abnormally displaced to the left or right, the axle 111 is automatically reset and centered under the action of the resilient device 211, reducing the re-wear of the abnormal wear position and prolonging the service life of the wheel body 1. The dust cap 22 and the fine adjustment screw hole 23 included in the drawing can be removed in production, or they can be retained, which can realize the functions of bearing installation and side cover disassembly. The resilient device 211 can be a spring, such as Figure 9 、 10 , 13, or it can be rubber, such as Figure 11 、 12 , hydraulic buffer device or other resettable device.

[0100] The adaptive adjustable type, in some embodiments, adds a fine adjustment device 21 to the adaptive type case. The side cover 2 also includes a fine adjustment screw hole 23 for adjusting the axial displacement of the axle 111, a resilient device 211 is sleeved into the fine adjustment screw hole 23, a sliding device 31 is arranged against the axle 111 and the resilient device 211, and the other end of the resilient device 211 is against the fine adjustment device 21. The center point of the fine adjustment device 21, the fine adjustment screw hole 23 and the axle 111 is on the same horizontal line. The assembled thrust wheel is fixed on the carrier by means of the fixing screw hole 24; the fine adjustment device 21 rotates to push the resilient device 211 to the sliding device 31 against the axle 111; both sides are synchronized with the above operation, so that the bearing 3 has no any point of play, but it is flexible to rotate as standard. In this scheme, the resilient device 211 can also be arranged in the side cover 2, as shown in Figure 13 , instead of being sleeved into the fine adjustment screw hole 23, and the fine adjustment device 21 extends out of the fine adjustment screw hole 23 and then abuts against the resilient device 211. This design adapts to medium and high loads, and the fine adjustment device 21 adjusts the reset force of the resilient device 211 to adapt to different degrees of wear of the chain or guide rail 120. When a certain chain link of the chain is abnormally displaced to the left or right, the axle 111 is automatically reset and centered under the action of the resilient device 211, reducing the re-wear of the abnormal wear position and prolonging the service life of the wheel body 1.

[0101] The application of the fine-tuning structure in this invention not only prevents the axle 111 from shifting, reduces the friction on the side of the bearing 3 and the lip wear of the seal 12, and extends the service life of the bearing 3 and the seal 12 by more than twice, but also enables easy installation and removal of the side cover 2, and makes it easy to install the bearing 3 and reduces the damage to the bearing 3 itself and the bearing seat 262 race caused by knocking during the installation process. Especially for the aftermarket, on-site repairs do not require the use of hydraulic devices or other professional tools to ensure the quality of assembly.

[0102] Sealed structures, such as Figures 14-17 As shown,

[0103] The wheel body 1 or the side cover 2 has a seat for installing a seal 12 at the junction of the side cover 2 and the wheel body 1. The seat is a groove for installing the seal 12, and the outer ring of the seal 12 is interference-fitted with the groove. A seal 12 is provided between the side cover 2 and the wheel body 1. The seal 12 includes an inner ring and an outer ring, which can rotate relative to each other under sealing conditions. While the chain drives the wheel body 1 to rotate, the axle 111 rotates easily under the support of the bearing 3. At this time, the bearing 3, located inside the side cover 2 and within the seal 12, effectively prevents mud and water from affecting the service life of the bearing. The wheel body 1 has a seat for installing the seal 12, relative to... Figure 14 As shown, in one configuration, the seal 12 and the wheel 1 are arranged laterally. In another configuration, the side cover 2 has a seat for mounting the seal 12, and the seal 12 and the wheel 1 are arranged laterally. This structure ensures that the side cover is not affected by the seal lip during installation. To accommodate more sealing methods and facilitate operation during processing, such as... Figure 15 As shown, the wheel body 1 has a seat for mounting the seal 12. The seal 12 and the wheel body 1 are arranged vertically. In special environments and harsh areas, such as muddy swamps, the wheel body 1 has a double seat for mounting the seal 12, where the seal 12 and the wheel body 1 are arranged vertically. Figure 16 As shown, this is to meet the needs of special environments; in another way, the side cover 2 is vertically provided with a mounting seat for the seal 12, which is another way to achieve easy installation of the seal. Of course, the seal 12 and the support roller can also be designed with a combination of the above-mentioned horizontal and vertical arrangements, such as... Figure 17 As shown.

[0104] Refueling structure,

[0105] As the bearing bearing structure in the application, in order to facilitate the later maintenance of bearing 3 or sliding device 31, scheme one: the oiling channel is arranged on the dust cover 22 or the side cover 2, one end of the oiling channel leads to the cavity between the side cover 2 and the wheel body 1, and the other end is connected with the oiling one-way valve. Scheme two: the oiling channel is arranged on the fine adjustment device 21, one end of the oiling channel leads to the cavity between the side cover 2 and the wheel body 1, and the other end is connected with the oiling one-way valve, and the dust cover 22 realizes the dustproof of the oiling one-way valve and the positioning of the fine adjustment device 21. Scheme three: the oiling channel is arranged on the fine adjustment device 21 and the dust cover 22, one end of the oiling channel of the fine adjustment device 21 leads to the cavity between the side cover 2 and the wheel body 1, the other end of the oiling channel of the fine adjustment device 21 is connected with the oiling channel of the dust cover 22, the other end of the oiling channel of the dust cover 22 is connected with the oiling one-way valve, and the oiling channel of the dust cover 22 is connected with the oiling channel of the fine adjustment device 21, so that the later maintenance of the bearing 3 or the sliding device 31 can be realized without disassembling the dust cover 22. The connection between the oiling one-way valve and the above-mentioned components can be welding or threaded connection.

[0106] The application provides a carrier with a support wheel, especially for excavators and tanks.

[0107] A side cover bearing installation tool, as shown in Figure 18 、 Figure 19 ,

[0108] Scheme one:

[0109] The tool includes an installation pull rod 32 and a bearing tension nut 322, the pull rod 32 and the bearing tension nut 322 are combined threaded matching structures, the diameter of the pull rod 32 is smaller than the inner diameter of the fine adjustment screw hole 23, the bearing 3 is installed into the side cover 2, the bearing installation pull rod 32 is screwed into the inner hole of the bearing 3 and the fine adjustment screw hole 23, the bearing installation pull rod 32 is sleeved with the bearing tension nut 322, the rotation of the bearing tension nut 322 is borrowed to pull the bearing 3 into the side cover 2, and the bearing installation pull rod 32 is withdrawn to complete the installation.

[0110] Scheme two:

[0111] The tool includes an installation push rod 33, the thread of the installation push rod 33 is combined with the thread of the fine adjustment screw hole 23 to form a matching structure. One bearing 3 is installed into the side cover 2, a bearing installation push rod 33 is screwed into the inner hole of the bearing 3 and the fine adjustment screw hole 23, the bearing installation push rod 33 is rotated to push the bearing 3 into the side cover 2, and the installation push rod 33 is withdrawn to complete the installation.

[0112] The tool, ① the mounting pull rod 32 or the mounting push rod 33 and the pressure sheet 321 are integrated structure, and can also be non-integrated structure, such as non-integrated structure, the bearing mounting pull rod 32 or the bearing mounting push rod 33 should be first sleeved with the pressure sheet 321; ② the sealing element 12 is installed on the side cover 2 or the wheel body 1, and the side cover 2 is not installed on the wheel shaft 111.

[0113] A side cover installation tool, as shown in Figure 20 、 21 ,

[0114] Scheme one:

[0115] Tool: including side cover installation screw 41 and side cover pressure nut 413, the thread of side cover installation screw 41 and the thread of side cover installation positioning screw hole 11 and side cover pressure nut 413 are combined and matched structure. The side cover 2 with bearing 3 is hung on the wheel shaft 111 of the wheel body 1, the side cover pressure nut 413 is screwed into the bottom of the side cover installation screw 41, then the side cover installation screw 41 is screwed into the fine adjustment screw hole 23 and locked on the side cover installation positioning screw hole 11, the side cover 2 is pressed into place by rotating the side cover pressure nut 413 with the tool, and the installation screw 41 is withdrawn to complete the installation.

[0116] Scheme two:

[0117] Tool: including side cover installation screw 41, the thread of side cover installation screw 41 and the thread of side cover installation positioning screw hole 11 are combined and matched structure. The side cover 2 with bearing 3 is hung on the wheel shaft 111 of the wheel body 1, the side cover installation screw 41 is screwed into the fine adjustment screw hole 23 and locked on the side cover installation positioning screw hole 11, the side cover 2 is pressed into place by rotating the installation screw 41 with the tool, and the installation screw 41 is withdrawn to complete the installation.

[0118] A side cover dismounting tool, as shown in Figure 22 、 23 ,

[0119] Tool: including side cover withdrawal push rod 412, the thread of side cover withdrawal push rod 412 and the thread of fine adjustment screw hole 23 are combined and matched structure. Based on the fine adjustment screw hole 23, the fine adjustment device 21 is rotated in the direction of the wheel shaft 111, and the side cover 2 is withdrawn from the wheel shaft 111 by the wheel shaft 111 or the sliding device 31.

[0120] The side cover withdrawal push rod 412 is the fine adjustment device 21.

[0121] The initial diameter of the side cover withdrawal push rod 412 is smaller than the inner diameter of the side cover installation positioning screw hole 11.

[0122] A method for assembling a supporting wheel, as shown in Figure 18 、 Figure 20 、 Figure 21As shown,

[0123] Step 1: Install a bearing 3 into the side cover 2. Pass a bearing mounting rod 32 through the inner hole of the bearing 3 and the fine-tuning screw hole 23. Put the bearing mounting rod 32 onto the bearing tension nut 322. Use a tool to rotate the bearing tension nut 322 to pull the bearing 3 into the side cover 2.

[0124] Step 2: Repeat step 1 to install another bearing 3 into the other side cover 2;

[0125] Step 3: Hang the side cover 2 with bearing 3 on the wheel axle 111 of the wheel body 1. The side cover mounting screw 41 passes through the fine adjustment screw hole 23 and locks on the side cover mounting positioning screw hole 11. After using a tool to rotate the mounting screw 41 to press the side cover 2 into place, remove the mounting screw 41.

[0126] Step 4: Repeat step 3 to assemble the other side cover 2 with bearing 3 onto the wheel axle 111 of wheel body 1. Assembly is complete.

[0127] A method for assembling a support roller, such as Figure 19 , Figure 20 , Figure 21 As shown,

[0128] Step 1: Install a bearing 3 into the side cover 2, and screw a bearing mounting push rod 33 through the inner hole of the bearing 3 into the fine adjustment screw hole 23. Rotate the bearing mounting push rod 33 to push the bearing 3 into the side cover 2, and then remove the bearing mounting push rod 33.

[0129] Step 2: Repeat step 1 on the other side cover 2 to install another bearing 3;

[0130] Step 3: Hang the side cover 2 with bearing 3 on the wheel axle 111 of the wheel body 1. The mounting screw 41 passes through the fine adjustment screw hole 23 and locks it on the side cover mounting positioning screw hole 11. After using a tool to rotate the mounting screw 41 to press the side cover 2 into place, remove the mounting screw 41.

[0131] Step 4: Repeat step 3 to assemble the other side cover 2 with bearing 3 onto the wheel axle 111 of wheel body 1. Assembly is complete.

[0132] The above two assembly methods for support rollers are as follows: ① The bearing mounting rod 32 or the bearing mounting push rod 33 and the pressure plate 321 are an integral structure, or they can be a non-integral structure. If they are not an integral structure, in the first step, the bearing mounting rod 32 or the bearing mounting push rod 33 should first be fitted with the pressure plate 321; ② The sealing element 12 is installed on the side cover 2 or the wheel body 1 in the steps before the side cover 2 is installed on the wheel axle 111.

[0133] A method for adjusting support rollers, such as Figure 4 As shown,

[0134] First step: the assembled support wheel is fixed on the carrier by means of the fixing screw hole 24;

[0135] Second step: after the fine adjustment device 21 is rotated to push the sliding device 31 against the wheel shaft 111, the fine adjustment device 21 is retracted in the opposite direction by a distance;

[0136] Third step: the above operations are simultaneously performed on both sides, so that the bearing 3 has no play gap and can rotate flexibly.

[0137] A method for adjusting a support wheel, as shown in the drawings, Figures 5-8

[0138] First step: the assembled support wheel is fixed on the carrier by means of the fixing screw hole 24;

[0139] Second step: after the fine adjustment device 21 is rotated to push the sliding device 31 against the wheel shaft 111, the fine adjustment device 21 is retracted in the opposite direction by a distance;

[0140] Third step: the above operations are simultaneously performed on both sides, so that the bearing 3 has no play gap and can rotate flexibly.

[0141] A method for adjusting a support wheel, as shown in the drawings, Figure 13

[0142] First step: the assembled support wheel is fixed on the carrier by means of the fixing screw hole 24;

[0143] Second step: the fine adjustment device 21 is rotated to push the elastic device 211 against the sliding device 31 against the wheel shaft 111;

[0144] Third step: the above operations are simultaneously performed on both sides, so that the bearing 3 has no play gap and can rotate flexibly.

[0145] According to the requirements, after the fine adjustment device 21 is adjusted, a locking glue can be applied to the joint between the fine adjustment device 21 and the fine adjustment screw hole 23, or a dust cap 22 can be tightly fixed outside the fine adjustment screw hole 23, which can prevent dust and prevent the fine adjustment device 21 from loosening.

[0146] The carrier is a test tooling table or a digging machine or a tank or other objects under operating conditions.

[0147] A method for disassembling a support wheel, as shown in the drawings, Figure 22

[0148] First step: the fine adjustment device 21 is rotated in the direction of the wheel shaft 111 based on the fine adjustment screw hole 23, and the side cover 2 is withdrawn from the wheel shaft 111 by the wheel shaft 111 or the sliding device 31;

[0149] ​​​Second step: both sides synchronization above operation, make two side covers 2 and wheel body 1 separate.

[0150] A method for disassembling a load wheel, such as Figure 23 shown,

[0151] First step: based on fine adjustment screw hole 23, exit fine adjustment device 21, one side cover exit push rod 412, rotate to wheel shaft 111 direction by means of fine adjustment screw hole 23, make side cover 2 exit wheel shaft 111 by force side cover installation screw hole bottom;

[0152] Second step: both sides synchronization above operation, make two side covers 2 and wheel body 1 separate.

[0153] Figures 24-28 It is the CAD line drawing produced by the present application, and it is a record of the production of the present application.

[0154] The embodiments of the present application are described in detail above, and the principles and implementation modes of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea. Meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed. In summary, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A support roller, characterized in that, The wheel body (1) includes: a guide rail (120) and a wheel axle (111). The guide rail (120) around both sides of the wheel body (1) and the wheel axle (111) at the center of both sides of the wheel body (1) are integrally formed with the wheel body (1). The guide rail (120) and the wheel axle (111) are connected by a support seat (112) formed by an integrally formed cavity. The side cover (2) includes: a bearing housing (262) and a fixed seat (242) and a connecting part (252) connecting the bearing housing (262) and the fixed seat (242), wherein the bearing housing (262), the fixed seat (242) and the connecting part (252) are integrally formed; The fixing seat (242) has at least one fixing screw hole (24) for screw fastening; the two side covers (2) are respectively installed in the support seat (112); The bearing (3) is supported between the outer circumferential surface of the axle (111) and the inner wall of the bearing housing (262); the interior of the support housing (112) is a limiting device (113); The bearing housing (262) extends inwardly into a limiting device two (263); The inner ring (302) of the bearing (3) is limited between the limiting device one (113) and the outer ring (301) is limited between the limiting device two (263); The limiting device 1 (113) extends from the inner ring (302) of the bearing (3) to the outer ring (301), and does not touch the outer ring (301) at most; The second limiting device (263) extends from the outer ring (301) of the bearing (3) toward the inner ring (302), but does not touch the inner ring (302) at most.

2. The support roller according to claim 1, characterized in that, The first limiting device and the second limiting device are designed with rough or textured surfaces.

3. The support roller according to claim 1, characterized in that, The wheel axle (111) is also provided with side cover mounting and positioning screw holes (11) at the center of both ends of the side surface, and the screw holes are internal thread structures.

4. The support roller according to claim 1, characterized in that, The side cover (2) is provided with a fine-tuning screw hole (23) for installing the bearing (3), and the screw hole has an internal thread structure.

5. The support roller according to claim 1, characterized in that, The axial length of the axle (111) is less than or equal to the axial length of the wheel body (1).

6. A support roller with a fine-tuning device, characterized in that, Including the support roller as described in any one of claims 1 to 5, It also includes a fine-tuning device (21) for adjusting the axial displacement of the wheel axle (111). The fine-tuning device (21) is screwed into the fine-tuning screw hole (23). The fine-tuning device (21) rests against the axle (111).

7. A support roller with an adaptive fine-tuning device, characterized in that, Including the support roller as described in any one of claims 1 to 5, It also includes an elastic device (211) for adjusting the axial displacement of the axle (111), The sliding device (31) abuts against the axle (111) and the elastic device (211), and the other end of the elastic device (211) abuts against the inside of the side cover (2).

8. The support roller according to claim 6, characterized in that, It also includes a sliding device (31), The sliding device (31) is positioned between the abutting wheel axle (111) and the fine-tuning device (21).

9. The support roller according to claim 6, characterized in that, The center points of the fine-tuning device (21), the fine-tuning screw hole (23), and the wheel axle (111) are at the same level.

10. The support roller according to claim 6, characterized in that, The threads of the fine-tuning device (21) and the threads of the fine-tuning screw hole (23) are matched together.

11. The support roller according to claim 7 or 8, characterized in that, The sliding device (31) is one of the following: ball bearing, needle roller bearing, pressure ball bearing, and limit block.

12. The support roller according to claim 6 or 7, characterized in that, The axle (111) has an outwardly extending valve seat (312), and the sliding device (31) is fitted on the outer diameter of the valve seat (312); or, the axle (111) has an inwardly extending valve seat, and the sliding device (31) is fitted on the inner diameter of the valve seat.

13. The support roller according to claim 7, characterized in that, It also includes a fine-tuning device (21), The side cover (2) is provided with a fine-tuning screw hole (23), and the fine-tuning device (21) is screwed into the fine-tuning screw hole (23) and the fine-tuning device (21) abuts against the elastic device (211).

14. The support roller according to claim 8, characterized in that, It also includes a pressure plate (311), which is disposed between the sliding device (31) and the fine-tuning device (21); or, the pressure plate (311) is disposed between the sliding device (31) and the elastic device (211).

15. The support roller according to claim 8, characterized in that, It also includes an elastic device (211) disposed between the sliding device (31) and the fine-tuning device (21).

16. A support roller with a sealing device, characterized in that, Including the support roller as described in any one of claims 1 to 6, The wheel body (1) has a seat for installing a seal (12) at the junction of the side cover (2) and the wheel body (1). The seat is a groove for installing the seal (12).

17. A support roller with a sealing device, characterized in that, Including the support roller as described in any one of claims 1 to 6, The side cover (2) has a seat for installing a seal (12) at the junction of the side cover (2) and the wheel body (1). The seat is a groove for installing the seal (12).

18. The support roller according to claim 16 or 17, characterized in that, The outer ring of the seal (12) is interference-fitted with the groove.

19. A support roller with a refueling device, characterized in that, Includes the support roller as described in any one of claims 1, 6, 7, 16, and 17. It also includes a refueling channel on the side cover (2).

20. A support roller with a refueling device, characterized in that, Includes the support roller as described in any one of claims 1, 6, 7, 16, and 17. It also includes a dust cap (22) with a refueling channel.

21. A support roller with a refueling device, characterized in that, Includes the support roller as described in any one of claims 1, 6, 7, 16, and 17. It also includes a fine-tuning device (21) for setting up a refueling channel.

22. The support roller according to claim 19, 20, or 21, characterized in that, One end of the refueling channel leads to the cavity between the side cover (2) and the wheel body (1).

23. The support roller according to claim 19, 20, or 21, characterized in that, A one-way valve is installed at the other end of the refueling channel.

24. The support roller according to claim 21, characterized in that, The refueling channel of the fine-tuning device (21) is connected to the refueling channel of the dust cap (22).

25. The support roller according to claim 6 or 20, 21, characterized in that, It also includes a dust cap (22), which is fastened to the outside of the fine-tuning device (21) and fits against the fine-tuning device (21).

26. An excavator, characterized in that, Includes the support roller as described in any one of claims 1, 6, 7, 16, 17, 19, 20, and 21.

27. A tank characterized by, Includes the support roller as described in any one of claims 1, 6, 7, 16, 17, 19, 20, and 21.

28. A side cover bearing installation tool, characterized in that... ， Including the support roller as described in claim 1, It includes a mounting rod (32) and a bearing tension nut (322). The mounting rod (32) and the bearing tension nut (322) are a combined threaded matching structure. The diameter of the mounting rod (32) is smaller than the inner diameter of the fine-tuning screw hole (23).

29. A side cover bearing installation tool, characterized in that: ， Including the support roller as described in claim 1, It includes a mounting push rod (33), the threads of which are combined with the threads of the fine-tuning screw hole (23) in a matching structure.

30. The side cover bearing mounting tool according to claim 28, characterized in that, The mounting rod (32) and the pressure plate (321) are an integral structure.

31. The side cover bearing mounting tool according to claim 29, characterized in that, The mounting push rod (33) and the pressure plate (321) are an integral structure.

32. A side cover installation tool, characterized in that: ， Including the support roller as described in claim 1, Includes side cover mounting screws (41) and side cover pressure nuts (413). The threads of the side cover mounting screws (41) and the threads of the side cover mounting positioning screw holes (11) and the side cover pressure nuts (413) are a combined matching structure.

33. A side cover installation tool, characterized in that: ， Including the support roller as described in claim 1, Includes side cover mounting screws (41), the threads of the side cover mounting screws (41) and the threads of the side cover mounting positioning screw holes (11) are a combined matching structure.

34. A side cover removal tool, characterized in that: ， Including the support roller as described in claim 1, Includes a side cover ejection push rod (412), the thread of which is a combined matching structure with the thread of the fine adjustment screw hole (23).

35. The side cover removal tool according to claim 34, characterized in that, The side cover ejection push rod (412) is a fine-tuning device (21).

36. The side cover removal tool according to claim 34, characterized in that, The starting diameter of the side cover ejection push rod (412) is smaller than the inner diameter of the side cover mounting positioning screw hole (11).

37. A method for adjusting a support roller, characterized in that, Including the support roller as described in claim 6, Step 1: Fix the assembled support rollers to the carrier using the fixing screw holes (24); Step 2: After the fine-tuning device (21) rotates and presses against the wheel axle (111), the fine-tuning device (21) moves back a certain distance in the opposite direction; Step 3: Perform the above operations on both sides simultaneously to ensure that the bearing (3) has no slippage or gap, but can rotate flexibly as the standard.

38. A method for adjusting a support roller, characterized in that, Including the support roller as described in claim 8, Step 1: Fix the assembled support rollers to the carrier using the fixing screw holes (24); Step 2: After the fine-tuning device (21) rotates and pushes the sliding device (31) against the wheel axle (111), the fine-tuning device (21) moves back a certain distance in the opposite direction; Step 3: Perform the above operations on both sides simultaneously to ensure that the bearing (3) has no slippage or gap, but can rotate flexibly as the standard.

39. A method for adjusting a support roller, characterized in that, Including the support roller as described in claim 13, Step 1: Fix the assembled support rollers to the carrier using the fixing screw holes (24); Step 2: The fine-tuning device (21) rotates to push the elastic device (211) until the sliding device (31) abuts against the axle (111); Step 3: Perform the above operations on both sides simultaneously to ensure that the bearing (3) has no slippage or gap, but can rotate flexibly as the standard.

40. A method for adjusting a support roller according to any one of claims 37 to 39, characterized in that, A dust cap (22) is fastened to the outside of the fine-tuning screw hole (23), and the dust cap (22) simultaneously abuts against the fine-tuning device (21).

41. A method for disassembling a support roller, characterized in that, Including the support roller as described in claim 6, Step 1: Based on the fine-tuning screw hole (23), rotate the fine-tuning device (21) in the direction of the wheel axle (111) and use the wheel axle (111) or sliding device (31) to make the side cover (2) retract from the wheel axle (111); Step 2: Perform the above operations on both sides simultaneously to separate the two side covers (2) from the wheel body (1).

42. A method for disassembling a support roller, characterized in that, Including the support roller as described in claim 6, Step 1: Based on the fine adjustment screw hole (23), remove the fine adjustment device (21), and rotate the side cover removal push rod (412) towards the wheel axle (111) with the help of the fine adjustment screw hole (23). Use the bottom of the side cover mounting screw hole to remove the side cover (2) from the wheel axle (111). Step 2: Perform the above operations on both sides simultaneously to separate the two side covers (2) from the wheel body (1).

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