CN203113202U - Supporting device for vibrating wheel of road roller and road roller with same - Google Patents

Abstract

The utility model relates to a supporting arrangement of road roller vibration wheel and have its road roller. The supporting structure comprises a supporting seat and a bearing seat, wherein the bearing seat is sleeved on the supporting seat through a single-row rolling bearing; a floating oil seal is arranged between the bearing seat and the bearing seat on the first side of the single-row rolling bearing; the outer surface of the supporting seat is provided with a groove, and the check ring is embedded into the groove and positions the inner ring at the second side of the single-row rolling bearing; and a gland is arranged on the bearing seat and provided with a protruding part, and the outer surface of the protruding part is matched with the inner hole of the bearing seat and used for positioning the outer ring of the second side of the single-row rolling bearing. According to the scheme, the single-row rolling bearing with smaller axial dimension is adopted, and the structure and the matching relation of the supporting device of the road roller vibration wheel are correspondingly adjusted, so that the supporting structure is smaller in axial dimension, simple in structure, improved in reliability and lower in cost.

Description

Supporting device for vibrating wheel of road roller and road roller with same

technical field

The utility model relates to the field of engineering machinery, in particular to a road roller of the engineering machinery and a supporting device for a vibrating wheel of the road roller. the

Background technique

In the road roller, the supporting device of the vibrating wheel is connected with the frame of the road roller and the vibrating wheel and supports the frame, so that the vibrating wheel can walk around the central axis of the supporting device, and at the same time, the eccentric shaft rotates around the supporting device to achieve vibration. The design of the vibrating wheel support device has a very important impact on the performance of the road roller. Unreasonable structure may easily lead to oil leakage of the vibrating wheel, and may cause damage to the rubber damping block and vibrating motor connected to it. These are very serious quality problems that cannot be easily remedied. the

At present, in order to avoid the occurrence of the above-mentioned problems as much as possible, the design of this part of the structure in the prior art is relatively conservative, and the use of new structures is not dared. Fig. 1 shows the schematic diagram of the supporting device of the vibrating wheel of the road roller in the prior art, wherein there is a support seat 1 connected to the round table 2, and a support sleeve 6 with a connected round table 5, and a double row of cones is installed at the contact of the shaft surface The roller bearing 4, the bearing sleeve 6 and the mutual rotation part connecting the round platform 2 are equipped with a floating sealing ring 3, the inner end of the bearing base 1 is fixed with the gland 10 by the screw 11, the bearing sleeve 6 is fixed with the end cover 8 by the screw 12, and the end There is a floating oil seal 7 between the cover 8 and the gland 10 . In the above supporting device, due to the use of a double-row tapered roller bearing with a large axial dimension, the entire device has a large axial dimension, complex structure, difficult assembly conditions, and high cost; in addition, due to the adoption of Two floating seals further increase the cost. Therefore, it is necessary to improve the above-mentioned defects existing in the prior art. the

Utility model content

The main purpose of the utility model is to provide a support device for a vibrating wheel of a road roller and a road roller having the same. The supporting device for the vibrating wheel of a road roller has an improved structure, and the structure is simple and the cost is low. the

In order to achieve the above object, according to the first aspect of the present utility model, a support device for the vibrating wheel of a road roller is provided, including a support seat and a bearing seat, the aforementioned bearing seat is sleeved on the aforementioned support seat through a single-row rolling bearing; A floating oil seal is provided between the aforementioned support seat on the first side of the rolling bearing and the bearing seat; a groove is provided on the outer surface of the aforementioned support seat, and a retaining ring is embedded in the aforementioned groove to position the inner ring of the second side of the aforementioned single row rolling bearing; A gland is installed on the aforementioned bearing seat, and the aforementioned gland has a protruding part. The outer surface of the aforementioned protruding part cooperates with the inner hole of the aforementioned bearing seat and positions the outer ring of the second side of the aforementioned single row rolling bearing. the

Further, a sealing ring is provided on the mating surface between the aforementioned protruding portion and the aforementioned bearing seat. the

Further, the aforementioned gland is installed on the end face of the aforementioned bearing seat. the

Further, a first stepped portion is formed on the outer surface of the aforementioned bearing seat on the first side of the aforementioned single-row rolling bearing, and a second stepped portion is formed on the inner hole of the aforementioned bearing seat on the first side of the aforementioned single-row rolling bearing, and the aforementioned first stepped portion The inner ring and the outer ring of the first side of the aforementioned single row rolling bearing are respectively positioned by the portion and the aforementioned second stepped portion. the

Further, the end surface of the aforementioned bearing seat has a recessed portion, and the aforementioned gland is fixed in the aforementioned recessed portion through a detachable connection device. the

Further, the aforementioned recessed portion and the aforementioned gland are both ring-shaped, and the radial dimensions of the two match. the

Further, the aforementioned bearing seat is provided with a retaining ring for auxiliary positioning of the aforementioned floating oil seal, and the aforementioned retaining ring is arranged on a side of the aforementioned floating oil seal away from the aforementioned single-row rolling bearing. the

Further, the aforementioned retaining ring is fixed on the aforementioned bearing seat through a detachable connection device. the

Further, the aforementioned single-row rolling bearing is a single-row deep groove ball bearing, a single-row self-aligning ball bearing or a single-row self-aligning roller bearing. According to a second aspect of the present utility model, a road roller is provided, and the aforementioned road roller includes the support device for the vibrating wheel of the road roller according to any one of the aforementioned first aspects. the

According to the technical solution of this embodiment, since the single-row rolling bearing with a smaller axial dimension is adopted, and the structure and matching relationship of the supporting device of the vibrating wheel of the road roller are adjusted accordingly, compared with the structure of the aforementioned prior art, the utility model The axial size of the supporting structure is small, the structure is simple, and fewer parts are used, so there are fewer potential failure points, so the reliability of the device is improved and the cost is also low. the

Description of drawings

The accompanying drawings of the description are used to provide a further understanding of the utility model and constitute a part of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute improper limitations to the utility model. In the attached picture:

Fig. 1 is the structural representation of the supporting device of road roller vibration wheel in the prior art;

Fig. 2 is a structural schematic diagram of the supporting device of the vibrating wheel of the road roller according to the embodiment of the present invention. the

Detailed ways

It should be noted that the features in the various embodiments of the present invention can be combined with each other in the absence of specific limitations or conflicts. The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. the

In order to overcome the defects of the supporting device of the vibrating wheel of the road roller in the prior art, the utility model provides an improved supporting device of the vibrating wheel of the road roller and the road roller and construction machinery with it. The structure of the supporting device is simple and the cost is low . the

Fig. 2 is a structural schematic diagram of the supporting device of the vibrating wheel of the road roller according to the embodiment of the present invention. As shown in Figure 2, the supporting structure of the vibration wheel of the road roller in this embodiment includes a single row deep groove ball bearing 30, a support seat 10 and a bearing seat 40, and the bearing seat 40 is sleeved on the support seat 10 through the single row deep groove ball bearing 30, The three cooperate with each other to support the frame of the road roller to realize the walking of the road roller and the vibration of the vibration wheel. the

The single row deep groove ball bearing 30 is a rolling bearing with simple structure, common production and wide application, which includes an inner ring, an outer ring, a set of single row steel balls and a set of cages. The inventor found through long-term practice that the single-row deep groove ball bearing 30 mainly bears radial loads, and can also bear radial loads and axial loads at the same time, which is more in line with the force characteristics of the bearings in the support device of the vibrating wheel of the road roller, so it can be applied The supporting device for the vibrating wheel of the road roller. the

Referring to Fig. 2, the bearing housing 40 is a component with an inner hole, and the single row deep groove ball bearing 30 is sleeved on the outer surface of the bearing housing 10, and is clamped between the outer surface of the bearing housing 10 and the inner hole of the bearing housing 40 between. A first stepped portion is formed on the outer surface of the bearing seat 10 , and a corresponding second stepped portion is formed on a corresponding position of the inner hole of the bearing seat 40 . The left sides of the inner and outer rings of the single row deep groove ball bearing 30 are respectively positioned by the first step on the support seat 10 and the second step on the bearing seat 40 . the

In addition, a groove is opened on the outer surface of the support seat 10, and the retaining ring 60 is an annular part, which can be embedded in the groove, so that the inner ring on the right side of the single row deep groove ball bearing 30 is covered by the retaining ring 60. limit. On the right side of the bearing seat 40, there is also a gland 50, and the left side of the gland 50 has a protruding portion 51 extending to the left. The protruding part 51 is an annular protrusion, and its outer circle matches the inner hole of the bearing seat 40, so that a part of the gland 50 is inserted into the inner hole of the bearing seat 40 through the protruding part 51, and the protruding part 51 extends to the left for a length of Enough to butt against the right side of the outer ring of the single row deep groove ball bearing 30 . Thus, the outer ring on the right side of the single row deep groove ball bearing 30 is limited by the protrusion 51 on the gland 50 . Moreover, the gland 50 also protects the single row deep groove ball bearing 30 from being exposed. the

In this way, the single row deep groove ball bearing 30 is limited radially by the outer surface of the support seat 10 and the inner hole of the bearing seat 40, and the single row deep groove ball bearing 30 is axially bounded by the first step portion on the support seat 10 and the bearing The second step portion on the seat 40 and the retaining ring 60 and the protruding portion 51 on the gland 50 ensure that the single row deep groove ball bearing 30 does not move radially or axially. Since the single-row deep groove ball bearing 30 is used to replace the double-row tapered roller bearing in the prior art, the axial dimension of the bearing itself is shortened, and the shaft used for installing the bearing between the support seat 10 and the bearing seat 40 is reduced. To the space, thereby shortening the axial dimension of the entire support device. the

The gland 50 can be installed on the right end surface of the bearing housing 40 . In order to facilitate the installation of the gland 50 , a recessed portion may be provided on the right end surface of the bearing seat 40 . The recessed portion is an annular surface, and the recessed portion can accommodate at least a part of the gland 50 in the axial direction, thereby further reducing the size of the entire device in the axial direction. Preferably, the gland 50 is a circular member, and the radial dimension of the recess matches the radial dimension of the gland 50 . In this way, the gland 50 can be installed on the bearing seat 40 more stably. The gland 50 can be disposed in the recessed portion of the bearing seat 40 through detachable connection devices such as screws and washers, so that it is convenient to install and disassemble the gland 50 when maintenance or replacement of bearing components is required. the

In addition, in order to further improve the sealing performance between the protruding portion 51 and the bearing seat 40 , a sealing ring 70 is provided on the mating surface between the protruding portion 51 and the bearing seat 40 . The sealing ring can adopt a common O-ring. the

In addition, an oil seal installation space is formed between the bearing housing 10 on the left side of the single row deep groove ball bearing 30 and the bearing housing 40 , and a floating oil seal 20 is provided in the oil seal installation space. The floating oil seal 20 can play the role of a rotating oil seal when the support seat 10 and the bearing seat 40 rotate relative to each other, preventing the lubricating oil used to lubricate the single row deep groove ball bearing 30 from leaking out of the vibrating wheel, and preventing external dust from entering the vibrating wheel internal. the

As shown in FIG. 2 , in order to prevent the position of the floating oil seal 20 from shifting, especially the axial position, a retaining ring 80 can also be installed on the left end of the bearing housing 40 . Specifically, the retaining ring 80 may be arranged on a side of the floating oil seal 20 away from the bearing housing 40 to prevent the floating oil seal 20 from moving to the left and coming out of the oil seal installation space. The retaining ring 80 can be installed on the bearing housing 40 by screws for easy disassembly and installation, so that in addition to assisting the positioning of the floating oil seal 20, the floating oil seal 20 can also be replaced or adjusted conveniently. the

According to the technical solution of this embodiment, the utility model adopts a single-row deep groove ball bearing with a small axial dimension, and adjusts the structure and matching relationship of the supporting device of the vibrating wheel of the road roller accordingly, which is similar to the structure of the aforementioned prior art In addition to using different bearings, a gland and a floating oil seal are also omitted. Due to the smaller axial size, simple structure, and fewer parts, there are fewer potential failure points, so the The reliability of the device is improved and the cost is lower. the

The supporting device of the vibrating wheel of the road roller of the present invention has been described according to the embodiment above, but the supporting device is not limited to the parts and/or connections described in the described embodiment. For example, in addition to the use of single row deep groove ball bearings, Commonly used single-row rolling bearings such as single-row self-aligning ball bearings and single-row self-aligning roller bearings can also be used; The purpose of the utility model can be achieved by cooperating with the inner hole of the single row rolling bearing and positioning the outer ring of the second side of the single row rolling bearing. the

The utility model also relates to a road roller, which includes the supporting device for the vibrating wheel of the road roller in any one of the aforementioned embodiments and modifications thereof. the

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model. the

Claims (10)

1. the supporting arrangement of a vibration wheel of road roller comprises supporting base (10) and bearing support (40), it is characterized in that, described bearing support (40) is sheathed on the described supporting base (10) by single-row rolling bearing; Between the described supporting base (10) of first side of described single-row rolling bearing and bearing support (40), be provided with float grease seal (20); The external surface of described supporting base (10) is provided with groove, and back-up ring (60) embeds in the described groove and locatees the inner ring of second side of described single-row rolling bearing; Gland (50) is installed on the described bearing support (40), and described gland (50) has protuberance (51), and the endoporus of the external surface of described protuberance (51) and described bearing support (40) matches and merges the outer ring of second side of locating described single-row rolling bearing.

2. the supporting arrangement of vibration wheel of road roller according to claim 1 is characterized in that, the fitting face between described protuberance (51) and the described bearing support (40) is provided with sealing ring (70).

3. the supporting arrangement of vibration wheel of road roller according to claim 1 is characterized in that, described gland (50) is installed on the end face of described bearing support (40).

4. the supporting arrangement of vibration wheel of road roller according to claim 1, it is characterized in that, first side in described single-row rolling bearing on the external surface of described supporting base (10) is formed with first step portion, the endoporus of described bearing support (40) is formed with second step portion in first side of described single-row rolling bearing, and described first step portion and described second step portion locate inner ring and the outer ring of first side of described single-row rolling bearing respectively.

5. the supporting arrangement of vibration wheel of road roller according to claim 4 is characterized in that, has depressed part on the end face of described bearing support (40), and described gland (50) is fixed in the described depressed part by detachable connecting device.

6. the supporting arrangement of vibration wheel of road roller according to claim 5 is characterized in that, described depressed part and described gland (50) is annular and both radial dimensions match.

7. the supporting arrangement of vibration wheel of road roller according to claim 1, it is characterized in that, described bearing support (40) is provided with the baffle ring (80) that assist location is provided for described float grease seal (20), and described baffle ring (80) is arranged on the side away from described single-row rolling bearing of described float grease seal (20).

8. the supporting arrangement of vibration wheel of road roller according to claim 7 is characterized in that, described baffle ring (80) is fixed on the described bearing support (40) by detachable connecting device.

9. the supporting arrangement of vibration wheel of road roller according to claim 1 is characterized in that, described single-row rolling bearing is single-groove grooved ball bearing (30), single-row self-aligning ball bearing or single-row self-aligning roller bearing.

10. a road roller is characterized in that, described road roller comprises the supporting arrangement according to each described vibration wheel of road roller in the claim 1 to 9.

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