Supporting wheel of excavator

Abstract

The utility model provides an excavator thrust wheel which comprises a thrust wheel body, a thrust wheel shaft, bushings symmetrically arranged at the two ends of the thrust wheel body and a limiting assembly. The limiting assembly comprises two sets of pressing blocks, the pressing blocks are symmetrically arranged at the two ends of the thrust wheel body, the pressing blocks and the thrust wheel body are detachably installed in a protruding point clamping and buckling mode, the pressing blocks and the bushings are arranged in a one-to-one correspondence mode, the pressing blocks stop the corresponding bushings respectively, and the pressing blocks and the bushings are arranged in a one-to-one correspondence mode. Spigots are formed in the centers of the end faces of the two sides of the thrust wheel body, a plurality of semicircular grooves distributed in the circumferences of the spigots are formed in the end faces of the thrust wheel body, a plurality of semicircular protruding blocks are arranged on the circumference of the lining, and the semicircular grooves correspond to the semicircular protruding blocks in a one-to-one mode so that the lining can be limited in the circumferential direction.

Description

Technical Field

[0001] The utility model relates to the technical field of excavator accessories, and specifically relates to an excavator idler wheel. Background Art

[0002] The idler wheel is one of the four wheels and one track of the crawler-type construction machinery chassis. Its function is to transfer the weight of the machine to the track and roll on the guide rail of the track. In the idler wheel, the copper bushing plays an important role. When the idler wheel rotates around the wheel shaft, the copper bushing directly contacts and wears with the wheel shaft instead of the idler wheel. In the prior art, a pin is commonly used to limit the position of the copper bushing, but there will be a situation where it is not easy to remove due to the deformation of the pin under force.

[0003] A Chinese utility model with the application number CN202323365469.9 discloses an excavator idler wheel, which includes a wheel body, a wheel shaft rotatably connected to the wheel body. The wheel body forms an open cylindrical structure. The inner wall of the opening of the wheel body is provided with a bushing. The bushing is located between the wheel shaft and the wheel body. The bushing is detachably installed on the inner wall of the wheel body and fixed by a locking structure. By setting a plurality of thrust bumps, the bushing and the thrust bumps are respectively embedded in the slot and the side slot to realize the circumferential position limitation of the bushing. The multiple thrust bumps limit the force on the bushing more evenly, which is convenient for pulling out the bushing and the thrust bumps later.

[0004] However, the inventor found that the device has the following problems: The nut is threadedly connected to the extension body to push the inner ring against the bushing to achieve axial position limitation. However, during the rotation of the idler wheel, vibration will occur, resulting in the loosening of the nut. Moreover, when the excavator is working, it is difficult to avoid some sundries such as soil blocks and stones from falling between the nut and the wheel shaft. As the idler wheel rotates, these sundries will further contact the nut and cause loosening, and finally it cannot play the role of limiting the bushing. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an excavator idler wheel in view of the deficiencies of the prior art. The excavator idler wheel includes an idler wheel body, an idler wheel shaft, and bushings symmetrically arranged at both ends of the idler wheel body, and further includes a limiting component; the limiting component includes two groups of pressing blocks, which are symmetrically arranged at both ends of the idler wheel body, and the pressing blocks are detachably installed on the idler wheel body by means of bump buckles. The pressing blocks are arranged in one-to-one correspondence with the bushings, and the pressing blocks respectively block the corresponding bushings.

[0006] To solve the above technical problems, the technical solution adopted by the present utility model is as follows: An excavator idler wheel includes an idler wheel body, an idler wheel shaft, and bushings symmetrically arranged at both ends of the idler wheel body, and further includes a limiting component; the limiting component includes two sets of pressing blocks, which are symmetrically arranged at both ends of the idler wheel body, and the pressing blocks are detachably installed on the idler wheel body by means of bump buckles. The pressing blocks are arranged in one-to-one correspondence with the bushings, and each pressing block blocks the corresponding bushing.

[0007] As a preference, clamping grooves are formed on both end faces of the idler wheel body.

[0008] As a preference, a buckle is arranged on the end face of the pressing block that cooperates with the idler wheel body and extends outward. The buckle is L-shaped and is engaged and locked with the clamping groove in one-to-one correspondence.

[0009] As a preference, after the buckle is engaged and locked with the clamping groove, a rubber plug is arranged at the opening of the clamping groove.

[0010] As a preference, a plurality of mounting holes are formed on the pressing block.

[0011] As a preference, a plurality of threaded holes are further formed on the end face of the idler wheel body, and the mounting holes are locked with the threaded holes in one-to-one correspondence by bolts.

[0012] As a preference, a rubber ring is further included. The rubber ring is sleeved on the idler wheel shaft and is located between the bushing and the pressing block. An installation groove for pressing the rubber ring is formed on the end face of the pressing block that cooperates with the idler wheel body. At this time, the rubber ring replaces the pressing block to block the bushing.

[0013] As a preference, a rabbet is formed at the center of both end faces of the idler wheel body.

[0014] As a preference, a plurality of semi-circular grooves are formed on the end face of the idler wheel body and are distributed on the circumference of the rabbet. A plurality of semi-circular protrusions are arranged on the circumference of the bushing, and the semi-circular grooves are in one-to-one correspondence with the semi-circular protrusions.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. By arranging the pressing block to limit the bushing, preventing the bushing from moving towards both ends of the idler wheel shaft. The pressing block is connected to the idler wheel body by means of bump buckles. The pressing block can be quickly disassembled and installed on the idler wheel body by rotation, saving manpower and improving work efficiency. Bolts are used to lock the mounting holes on the pressing block and the threaded holes on the idler wheel body to further fix the pressing block and prevent the pressing block from loosening, which affects the limiting effect on the bushing and improves the stability of the pressing block.

[0017] 2. A rabbet is provided at the center of both end faces of the carrier roller body. The shoulder stop of the rabbet can prevent the bushing from moving towards the axial center of the carrier roller, ensuring the stability of the bushing after installation. The rabbet can also achieve quick positioning and installation of the bushing, improving the working efficiency during installation;

[0018] 3. A rubber ring is added between the pressing block and the bushing. The rubber ring is pressed by the pressing block to block the bushing and limit the position of the bushing. At the same time, the rubber ring is also sleeved on the carrier roller shaft, which can effectively prevent sundries such as dust and stones from adhering to the carrier roller shaft and rubbing against the bushing, avoiding aggravated wear and increasing the service life of the bushing.

[0019] In summary, the equipment has the advantages of high installation efficiency, good stability, long service life, etc., and is especially suitable for the technical field of excavator accessories. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 FIG. is a schematic structural diagram of an excavator carrier roller;

[0022] Figure 2 FIG. is a partial schematic diagram of an excavator carrier roller;

[0023] Figure 3 FIG. is a schematic structural diagram of the carrier roller body;

[0024] Figure 4 FIG. is Figure 3 a partial cross-sectional view at A in

[0025] Figure 5 FIG. is a schematic structural diagram of the pressing block;

[0026] Figure 6 FIG. is a schematic structural diagram of the added dust-proof function;

[0027] Figure 7 FIG. is a schematic structural diagram of the rubber plug.

[0028] Reference numerals in the drawings: 1. Carrier roller body; 11. Card slot; 111. Rubber plug; 12. Threaded hole; 13. Rabbet; 14. Semi-circular groove; 2. Carrier roller shaft; 3. Bushing; 31. Semi-circular convex block; 4. Limiting component; 41. Pressing block; 411. Buckle; 412. Mounting hole; 413. Mounting groove; 5. Rubber ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0030] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0032] Embodiment 1:

[0033] As Figures 1 to 7 shown, an excavator idler wheel includes an idler wheel body 1, an idler wheel shaft 2, and bushings 3 symmetrically arranged at both ends of the idler wheel body 1, and further includes a limiting component 4; the limiting component 4 includes two groups of pressing blocks 41, which are symmetrically arranged at both ends of the idler wheel body 1, and the pressing blocks 41 are detachably installed on the idler wheel body 1 by means of convex point buckles. The pressing blocks 41 are arranged in one-to-one correspondence with the bushings 3, and the pressing blocks 41 respectively block the corresponding bushings 3.

[0034] It is worth mentioning here that the bushings 3 are limited by arranging the pressing blocks 41 to prevent the bushings 3 from moving towards both ends of the idler wheel shaft 2.

[0035] As Figures 2 to 4 shown, clamping grooves 11 are formed on both end faces of the idler wheel body 1.

[0036] As Figure 1 、 5As shown, on the end face of the pressing block 41 that cooperates with the carrier wheel body 1, a buckle 411 is provided and extends outward. The buckle 411 is L-shaped, and the buckle 411 is engaged and locked with the corresponding slot 11 one by one.

[0037] It is worth mentioning here that the pressing block 41 and the carrier wheel body 1 are connected by means of bump buckles. The pressing block 41 can be quickly disassembled and installed on the carrier wheel body 1 by rotation, saving manpower and improving work efficiency.

[0038] As Figure 1 、 7 shown, after the buckle 411 is engaged and locked with the slot 11, a rubber plug 111 is provided at the opening of the slot 11.

[0039] It should be noted here that a plug cap is provided on the rubber plug 111 for easy manual disassembly and installation.

[0040] It is worth mentioning here that by providing the rubber plug 111, the slot 11 after being engaged and locked is protected to prevent dust and other sundries from entering the slot 11, avoiding the situation where the buckle 411 is difficult to disassemble and install.

[0041] As Figure 5 shown, a number of mounting holes 412 are provided on the pressing block 41.

[0042] As Figure 1 、 3 、5 shown, a number of threaded holes 12 are also provided on the end face of the carrier wheel body 1, and the mounting holes 412 are locked with the threaded holes 12 one by one through bolts.

[0043] It is worth mentioning here that bolts are used to lock the mounting holes 412 on the pressing block 41 and the threaded holes 12 on the carrier wheel body, further fixing the pressing block 41 to prevent the pressing block 41 from loosening and affecting the limiting effect on the bushing 3, and improving the stability of the pressing block 41.

[0044] As Figure 1 、 6 shown, it further includes a rubber ring 5. The rubber ring 5 is sleeved on the carrier wheel shaft 2. The rubber ring 5 is located between the bushing 3 and the pressing block 41. An installation groove 413 for pressing the rubber ring 5 is provided on the end face of the pressing block 41 that cooperates with the carrier wheel body 1. At this time, the rubber ring 5 replaces the pressing block 41 to block the bushing 3.

[0045] It should be noted here that in order to add a dust-proof function to the carrier wheel shaft 2, the carrier wheel can also adopt a structural method of adding a rubber ring 5 between the pressing block 41 and the bushing 3.

[0046] It is worth mentioning here that a rubber ring 5 is added between the briquette 41 and the bushing 3. The rubber ring 5 is pressed and installed by the briquette 41. The rubber ring 5 blocks the bushing 3 to limit the position of the bushing 3. At the same time, the rubber ring 5 is also sleeved on the carrier roller shaft 2, which can effectively prevent sundries such as dust and stones from adhering to the carrier roller shaft 2 and rubbing against the bushing 3, avoiding the aggravation of wear and increasing the service life of the bushing 3.

[0047] As Figure 3 shown, stop mouths 13 are provided at the centers of both end faces of the carrier roller body 1.

[0048] It is worth mentioning here that the shoulder stop of the stop mouth 13 can prevent the bushing 3 from moving towards the center of the carrier roller shaft 2, ensuring the stability of the bushing 3 after installation. The stop mouth 13 can also achieve quick positioning and installation of the bushing 3, improving the working efficiency during installation.

[0049] As Figure 2 、 3 shown, a plurality of semi-circular grooves 14 are provided on the end face of the carrier roller body 1 and are distributed on the circumference of the stop mouth 13. A plurality of semi-circular protrusions 31 are provided on the circumference of the bushing 3, and the semi-circular grooves 14 and the semi-circular protrusions 31 correspond to each other one by one.

[0050] It is worth mentioning here that by providing the semi-circular grooves 14 on the stop mouth 13 and the semi-circular protrusions 31 on the bushing 3, the movement of the bushing 3 in the circumferential direction is limited to prevent the bushing 3 from rotating in the stop mouth 13 and reducing the wear of the carrier roller body 1 caused by the rotation of the bushing 3.

[0051] The working process is as follows:

[0052] Insert the carrier roller shaft 2 into the carrier roller body 1, press and install the bushing 3 at the stop mouths 13 at both ends of the carrier roller body 1. At the same time, the bushing 3 is sleeved on the carrier roller shaft 2, and the semi-circular protrusions 31 on the bushing 3 correspond to the semi-circular grooves 14 one by one. After the pressing and installation are completed, the movement of the bushing 3 in the circumferential direction is limited; assemble the rubber ring 5 in the installation groove 413 of the briquette 41, then put the rubber ring 5 on the carrier roller shaft 2, push the briquette 41 towards the center direction of the carrier roller shaft 2, and at the same time align the buckle 411 with the card slot. When the rubber ring 5 contacts the bushing 3, rotate the briquette 41 to make the buckle snap and lock, and screw on the bolt at the installation hole 412 to limit the bushing 3 in the axial direction of the carrier roller shaft 2, and press and install the rubber plug 111 at the opening of the card slot 11 for dust prevention.

[0053] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An excavator track roller, comprising a track roller body (1), a track roller shaft (2), and bushings (3) symmetrically arranged at both ends of the track roller body (1), characterized in that: Also includes: Limiting assembly (4); The limiting assembly (4) comprises two groups of pressing blocks (41), the pressing blocks being symmetrically arranged at the two ends of the supporting roller body (1), and the pressing blocks (41) being detachably mounted on the supporting roller body (1) by means of convex point snap-fits, the pressing blocks (41) being arranged in one-to-one correspondence with the bushings (3), and the pressing blocks (41) respectively block the corresponding bushings (3).

2. The excavator track wheel according to claim 1, characterized in that: The two end surfaces of the track wheel body (1) are both provided with clamping grooves (11).

3. The excavator track wheel according to claim 2, characterized in that: A buckle (411) is provided on the end surface of the pressing block (41) that cooperates with the supporting wheel body (1) and extends outwards. The buckle (411) is provided in an L-shape, and the buckle (411) is locked in a one-to-one correspondence with the locking groove (11).

4. The excavator track wheel according to claim 3, characterized in that: After the buckle (411) is engaged and locked with the slot (11), a rubber stopper (111) is provided at the opening of the slot (11).

5. The excavator track wheel according to claim 2, characterized in that: The pressing block (41) is provided with a plurality of mounting holes (412).

6. The excavator track wheel according to claim 5, characterized in that: The end surface of the track roller body (1) is also provided with a plurality of threaded holes (12), and the mounting holes (412) are locked with the threaded holes (12) in a one-to-one correspondence via bolts.

7. The excavator track wheel according to claim 1, characterized in that: It also comprises a rubber ring (5), the rubber ring (5) being sleeved on the supporting wheel shaft (2), the rubber ring (5) being located between the bushing (3) and the pressing block (41), and a mounting groove (413) for pressing the rubber ring (5) is provided on the end surface of the pressing block (41) that cooperates with the supporting wheel body (1), at which time the rubber ring (5) blocks the bushing (3) instead of the pressing block (41).

8. The excavator track wheel according to claim 1, characterized in that: Stops (13) are provided at the centre of both side end surfaces of the track roller body (1).

9. The excavator track wheel according to claim 8, characterized in that: The end surface of the track roller body (1) is provided with a plurality of semicircular grooves (14) distributed on the circumference of the stop (13), and the circumference of the bushing (3) is provided with a plurality of semicircular protrusions (31), and the semicircular grooves (14) correspond to the semicircular protrusions (31) one by one.

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