Final transmission dustproof sealing assembly for bulldozer

Abstract

The utility model relates to the technical field of final transmission of a bulldozer, in particular to a final transmission dustproof sealing assembly for the bulldozer, which comprises an outer dustproof shell and an inner dustproof shell, and a first sealing connecting cavity and a second sealing connecting cavity are respectively arranged in the outer dustproof shell and the inner dustproof shell. A sealing ring is movably installed between the first sealing connecting cavity and the second sealing connecting cavity, a circular ring fixing plate is fixed to the inner side of the outer dustproof shell, a groove is formed in one side of the inner dustproof shell, a sealing rubber mat is fixedly installed in the groove, and an inserting block used for being inserted into the sealing rubber mat to achieve sealing is fixed to the circular ring fixing plate. A fender is movably installed on one side of the outer dustproof shell, a sealing ring is arranged between the first sealing connection cavity and the second sealing connection cavity, a sealing rubber mat is further arranged between the inner dustproof shell and the outer dustproof shell, the dustproof protection effect is achieved, and the situation that dust, harmful substances and other corrosive impurities enter the final transmission interior to damage an oil seal is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of final drive of a bulldozer, in particular to a final drive dustproof sealing component for a bulldozer. Background Art

[0002] A bulldozer is an earth-moving engineering machine that can dig, transport and discard rock and soil. It is widely used in open-pit mines, for example, to build dumping sites, level automobile dumping sites, pile up scattered ore and rock, level work platforms and construction sites, etc. The movement of the bulldozer is achieved by connecting the final drive to the power output device to transmit power. Among them, the "bulldozer final drive" disclosed in the application number "CN207583994U" has solved the current traditional bulldozer two-stage spur gear reduction structure final drive device, which has a simple structure, large structural size, uneven force on parts, and cannot be modularly designed, which is inconvenient to maintain. At the same time, although the oil lubrication adopts gear splash lubrication, it has many disadvantages. After further retrieval, it was found that the "bulldozer final drive" disclosed in the application number "CN204477255U" The transmission hub is designed with a specific technical structure to effectively solve the problem that the hub is too thick and easy to form casting shrinkage when one-piece casting is used, resulting in a low casting yield; at the same time, there is a dust-proof maze on one side of the hub, which makes processing difficult. However, in actual use, the final drive dust seal assembly of a bulldozer with a similar structure still has many defects, such as: the working conditions of the bulldozer are relatively harsh, and various toxic, harmful and corrosive chemical substances in the working medium will corrode and damage the seals of the vehicle, especially the floating oil seal of the final drive and travel system of the bulldozer. If the bulldozer has a poor sealing effect, such as the oil seal is damaged during operation, it will cause oil leakage in the transmission system, premature damage to the transmission system, or even the scrapping of the entire machine. Therefore, it is necessary to design a final drive dust seal assembly for the bulldozer. Utility Model Content

[0003] The utility model aims to provide a final drive dust seal assembly for a bulldozer to solve the problem of poor sealing effect proposed in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The final drive dust seal assembly for a bulldozer comprises an outer dust shell and an inner dust shell, wherein the outer dust shell and the inner dust shell are respectively provided with a first sealed connection cavity and a second sealed connection cavity, a sealing ring is movably installed between the first sealed connection cavity and the second sealed connection cavity, a circular ring fixing plate is fixed on the inner side of the outer dust shell, a groove is provided on one side of the inner dust shell, a sealing rubber pad is fixedly installed inside the groove, an insert block for inserting into the sealing rubber pad to achieve sealing is fixed on the circular ring fixing plate, and a fender is movably installed on one side of the outer dust shell. The sealing ring and the sealing rubber pad make the connection between the outer dust shell and the inner dust shell more sealed. Therefore, the sealing of the final drive connection is better, and combined with the dustproof function of the dust shell, a better protection effect is finally achieved.

[0006] Furthermore, a cavity is provided inside the inner dustproof shell, a limit slot is provided inside the circular fixing plate, a limit block for telescopic movement is slidably installed inside the cavity, the limit block is engaged with the limit slot, and a spring fixed to the limit plate is fixedly installed inside the cavity. When the circular fixing plate is slidably installed on the outside of the inner dustproof shell, the limit block slides into the limit slot, fixing the circular fixing plate on the outside of the inner dustproof shell, so that the outer dustproof shell is fixedly installed on one side of the inner dustproof shell. Since the elastic force of the spring acts on the limit plate, the limit block slides more firmly into the limit slot.

[0007] Furthermore, the limit block is fixedly installed with a limit plate, and the limit plate is limited by the inner dustproof shell. The limit plate limits the extension length of the limit block.

[0008] Furthermore, the shape of the end of the limit block for engaging with the slot is arc-shaped, which facilitates the circular ring fixing block to press down the outer side of the inner dustproof shell when the limit block slides on the outer side of the inner dustproof shell.

[0009] Furthermore, a circular mounting groove is provided on the inner side of the outer dustproof shell, and a circular mounting plate fixed to the inner dustproof shell is slidably mounted inside the circular mounting groove. When the outer dustproof shell and the inner dustproof shell are connected and installed, the circular mounting plate slides into the circular mounting groove to position the outer dustproof shell, so that the outer dustproof shell and the inner dustproof shell are installed more firmly.

[0010] Furthermore, a second mounting hole is provided inside the outer dust cover, and a first mounting hole is provided inside the inner dust cover. The connecting piece of the final drive is fixedly installed inside the first mounting hole and the second mounting hole, so that the sealing dustproof assembly is more firmly fixed on the final drive.

[0011] Furthermore, a debris discharge port is provided at the bottom between the outer dustproof shell and the inner dustproof shell, and the angle between the edges on both sides of the debris discharge port is 60 degrees. The debris inside the outer dustproof shell and the inner dustproof shell is discharged through the debris discharge port due to its own gravity.

[0012] Furthermore, a screw hole is provided on one side of the outer dust shell, and a bolt is installed through one side of the mud guard and extends to the inside of the screw hole. The mud guard is installed on one side of the outer dust shell, and one end of the bolt is installed in the inside of the screw hole to fix the mud guard on one side of the outer dust shell, so as to block mud from the outside of the outer dust shell, thereby preventing mud from contaminating the outer dust shell during operation.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. An outer dustproof shell, an inner dustproof shell, a first sealed connection chamber and a second sealed connection chamber are arranged on the output connection piece of the final transmission. A sealing ring is arranged between the first sealed connection chamber and the second sealed connection chamber, and a sealing rubber pad is arranged between the inner dustproof shell and the outer dustproof shell to provide dustproof protection to prevent dust, harmful substances and other corrosive debris from entering the interior of the final transmission and causing damage to the oil seal.

[0015] 2. By setting a sealing ring, a mudguard, a screw hole and a bolt, the mudguard is installed on one side of the outer dust shell, and one end of the bolt is installed in the inside of the screw hole to fix the mudguard to one side of the outer dust shell, so as to block mud on the outside of the outer dust shell, thereby preventing the outer dust shell from being contaminated by mud during work, and the sealing ring makes the sealing of the final transmission connection better.

[0016] 3. By setting a debris discharge port, the debris inside the outer dustproof shell and the inner dustproof shell is discharged through the debris discharge port due to its own gravity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0019] Figure 2 It is a side view structural schematic diagram of the utility model;

[0020] Figure 3 It is a partial front view cross-sectional structural diagram of the inner dustproof shell of the utility model;

[0021] Figure 4 It is a schematic diagram of the side cross-sectional structure of the outer dustproof shell of the utility model.

[0022] In the figure: 1. outer dustproof shell; 101. inner dustproof shell; 102. first sealed connecting cavity; 103. second sealed connecting cavity; 104. sealing ring; 105. first mounting hole; 106. second mounting hole; 107. debris discharge port; 108. mudguard; 109. screw hole; 2. bolt; 201. circular ring fixing plate; 202. groove; 203. sealing rubber pad; 204. plug-in block; 205. cavity; 206. limit slot; 207. limit block; 208. limit plate; 209. spring; 3. circular ring mounting groove; 301. circular ring mounting plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0026] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0027] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0028] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0029] like Figures 1 to 4 A final drive dust seal assembly for a bulldozer comprises an outer dust shell 1 and an inner dust shell 101. A first sealed connecting cavity 102 and a second sealed connecting cavity 103 are respectively provided inside the outer dust shell 1 and the inner dust shell 101. A sealing ring 104 is movably installed between the first sealed connecting cavity 102 and the second sealed connecting cavity 103. Specifically, the sealing ring can be squeezed between the first sealed cavity and the second cavity. A circular ring fixing plate 201 is fixed on the inner side of the outer dust shell 1. A groove 202 is provided on one side of the inner dust shell 101. A sealing rubber pad 203 is fixedly installed inside the groove 202. An insert 204 for inserting into the sealing rubber pad 203 to achieve sealing is fixed on the circular ring fixing plate 201. A fender 108 is movably installed on one side of the outer dust shell 1.

[0030] A cavity 205 is provided inside the inner dustproof shell 101, a limit slot 206 is provided on the inner side of the circular fixing plate 201, a limit block 207 for telescopic movement is slidably installed inside the cavity 205, the limit block 207 is engaged with the limit slot 206, and a spring 209 fixed to the limit plate 208 is fixedly installed inside the cavity 205.

[0031] The limiting block 207 is fixedly installed with a limiting plate 208 , and the limiting plate 208 is limited by the inner dustproof shell 101 .

[0032] The shape of the end of the stopper 207 for engaging with the slot 206 is arc-shaped. In this way, during installation, the stopper 207 can be retracted during the sliding process of the annular fixing plate 201. Of course, other shapes can also be used, and guide surfaces can be set on the edge of the stopper 207.

[0033] A circular mounting groove 3 is formed on the inner side of the outer dustproof shell 1 , and a circular mounting plate 301 fixed to the inner dustproof shell 101 is slidably mounted inside the circular mounting groove 3 .

[0034] A second mounting hole 106 is formed inside the outer dustproof shell 1 , and a first mounting hole 105 is formed inside the inner dustproof shell 101 .

[0035] A debris discharge port 107 is provided at the bottom between the outer dustproof shell 1 and the inner dustproof shell 101 , and the included angle between the two side edges of the debris discharge port 107 is 60 degrees.

[0036] A screw hole 109 is formed on one side of the outer dustproof shell 1 , and a bolt 2 is installed through one side of the fender 108 and extends into the screw hole 109 .

[0037] Working principle:

[0038] The outer dust cover 1 and the inner dust cover 101 are connected to the output connector of the final transmission through the first sealed connection cavity 102 and the second sealed connection cavity 103, and dust protection is provided to prevent dust, harmful substances and other corrosive debris from entering the final transmission and causing damage to the oil seal. The debris inside the outer dust cover 1 and the inner dust cover 101 is discharged through the debris discharge port 107 due to its own gravity. The mud guard 108 is installed on one side of the outer dust cover 1. One end of the bolt 2 is installed in the screw hole 109 to fix the mud guard 108 on one side of the outer dust cover 1. The outer side acts as a mud barrier to prevent the outer dust cover 1 from being polluted by mud during operation. The sealing ring 104 makes the sealing of the final drive connection better. The connecting part of the final drive is fixedly installed inside the first mounting hole 105 and the second mounting hole 106, so that the sealing dustproof component is more firmly fixed on the final drive. When the outer dust cover 1 is installed on one side of the inner dust cover 101, the plug 204 on one side of the circular fixing plate 201 slides into the inside of the groove 202 and contacts the sealing gasket 203, so that the connection between the outer dust cover 1 and the inner dust cover 101 is better sealed.

[0039] When the annular fixing plate 201 is slidably installed on the outer side of the inner dustproof shell 101, the limiting block 207 slides into the inner limiting slot 206 to fix the annular fixing plate 201 on the outer side of the inner dustproof shell 101, so that the outer dustproof shell 1 is fixedly installed on one side of the inner dustproof shell 101. Due to the elastic force of the spring 209 acting on the limiting plate 208, the limiting block 207 slides into the inner limiting slot 206 more firmly. Figure 4 As shown, when the outer dustproof shell 1 is connected and installed with the inner dustproof shell 101, the annular mounting plate 301 slides into the inner annular mounting groove 3 to position the outer dustproof shell 1, so that the outer dustproof shell 1 and the inner dustproof shell 101 are installed more firmly.

[0040] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A final drive dust seal assembly for a bulldozer, comprising an outer dust cover (1) and an inner dust cover (101), characterized in that: The outer dustproof shell (1) and the inner dustproof shell (101) are respectively provided with a first sealed connection cavity (102) and a second sealed connection cavity (103); a sealing ring (104) is movably installed between the first sealed connection cavity (102) and the second sealed connection cavity (103); a circular ring fixing plate (201) is fixed on the inner side of the outer dustproof shell (1); a groove (202) is provided on one side of the inner dustproof shell (101); a sealing rubber pad (203) is fixedly installed inside the groove (202); an insert (204) for inserting into the sealing rubber pad (203) to achieve sealing is fixed on the circular ring fixing plate (201); and a mudguard (108) is movably installed on one side of the outer dustproof shell (1).

2. The final drive dust seal assembly for a bulldozer according to claim 1, characterized in that: A cavity (205) is provided inside the inner dustproof shell (101), a limit slot (206) is provided on the inner side of the annular fixing plate (201), a limit block (207) for telescopic movement is slidably installed inside the cavity (205), the limit block (207) is engaged with the limit slot (206), and a spring (209) fixed to the limit plate (208) is fixedly installed inside the cavity (205).

3. The final drive dust seal assembly for a bulldozer according to claim 2, characterized in that: The limiting block (207) is fixedly mounted with a limiting plate (208), and the limiting plate (208) is limited by the inner dustproof shell (101).

4. The final drive dust seal assembly for a bulldozer according to claim 2, characterized in that: The shape of the end of the limiting block (207) for engaging with the locking groove (206) is arc-shaped.

5. The final drive dust seal assembly for a bulldozer according to claim 1, characterized in that: A circular mounting groove (3) is provided on the inner side of the outer dustproof shell (1), and a circular mounting plate (301) fixed to the inner dustproof shell (101) is slidably mounted inside the circular mounting groove (3).

6. The final drive dust seal assembly for a bulldozer according to claim 1, characterized in that: A second mounting hole (106) is provided on the inner side of the outer dustproof shell (1), and a first mounting hole (105) is provided inside the inner dustproof shell (101).

7. The final drive dust seal assembly for a bulldozer according to claim 5, characterized in that: A debris discharge outlet (107) is provided at the bottom between the outer dustproof shell (1) and the inner dustproof shell (101), and the included angle between the edges on both sides of the debris discharge outlet (107) is 60 degrees.

8. The final drive dust seal assembly for a bulldozer according to claim 5, characterized in that: A screw hole (109) is provided on one side of the outer dustproof shell (1), and a bolt (2) is installed through one side of the fender (108) and extends to the inside of the screw hole (109).

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