Split type dust cover, transfer case and excavator

Abstract

The split-type dust cover comprises a dust-proof outer cover, a dust-proof inner cover and a dust-proof filter screen, the dust-proof outer cover is a bent plate and is used for being matched with the shape of an observation hole of the transfer case, and a heat dissipation grid I is arranged on the dust-proof outer cover; the outer side face of the dustproof inner cover and the inner side face of the dustproof outer cover are assembled together in an attached mode, the two ends of the dustproof inner cover are bent for multiple times to form a stepped structure, then the stepped structure and the dustproof outer cover form an upper clamping groove and a lower clamping groove, and the split type dustproof cover is clamped in an observation hole of the transfer case through the upper clamping groove and the lower clamping groove. A heat dissipation grid II communicated with the heat dissipation grid I is arranged on the dustproof inner cover; the dustproof filter screen is arranged between the heat dissipation grid I and the heat dissipation grid II and can cover at least one heat dissipation grid so as to prevent foreign matter from entering the transfer case through the heat dissipation grids. The transfer case solves the problem that due to the fact that an observation hole of a traditional transfer case is normally opened, dust is accumulated to form oil sludge, gear meshing is affected, and early damage is caused.

Description

Technical Field

[0001] The utility model relates to a split dust cover, which is applied to the observation hole of the transfer case of an excavator and belongs to the technical field of hydraulic excavators. Background Art

[0002] At present, the engine of a hydraulic excavator is connected to the transfer case through the flywheel connecting housing of the transfer case. Observation holes in a normally open state are arranged around the flywheel connecting housing to observe the meshing operation of components for screening and eliminating transmission system faults. When the hydraulic excavator is in operation, rotating components cause a large amount of air flow through the observation holes, allowing a large amount of dust and foreign objects to enter the flywheel connecting housing and form sludge over time, hindering the normal meshing of gear parts and causing early damage to related components.

[0003] The traditional sealing device is made of elastic material and is installed by being embedded in the observation hole of the transfer case. Although it can ensure the sealing performance, it affects the heat dissipation performance. At the same time, due to the lack of support with sufficient strength, it is easily damaged when impacted by larger foreign objects. In addition, the material of the elastic material is susceptible to environmental influence and exhibits deterioration and aging phenomena, affecting the use and service life. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the utility model provides a split dust cover, which solves the problems of dust accumulation forming sludge due to the normally open observation hole of the traditional transfer case, affecting gear meshing and resulting in early damage. At the same time, the structure and materials are optimized to solve the problems of the traditional rubber elastic material plug affecting heat dissipation, poor support, and material being susceptible to environmental influence and deteriorating and aging.

[0005] The utility model is realized according to the following technical solutions:

[0006] In a first aspect, the utility model provides a split dust cover, including:

[0007] A dust-proof outer cover, which is a bent plate and is used to adapt to the shape of the observation hole of the transfer case. The dust-proof outer cover is provided with heat dissipation grille Ⅰ;

[0008] A dust-proof inner cover, whose outer side surface is fitted and assembled with the inner side surface of the dust-proof outer cover. Both ends of the dust-proof inner cover are bent multiple times to form a stepped structure and then form an upper clamping groove and a lower clamping groove with the dust-proof outer cover. The split dust cover is clamped in the observation hole of the transfer case through the upper and lower clamping grooves. The dust-proof inner cover is provided with heat dissipation grille Ⅱ connected to the heat dissipation grille Ⅰ;

[0009] A dust-proof filter screen, which is arranged between the heat dissipation grille Ⅰ and the heat dissipation grille Ⅱ. The dust-proof filter screen can cover at least one heat dissipation grille to prevent foreign objects from entering the transfer case through the heat dissipation grille.

[0010] In some embodiments, the dust-proof outer cover, the dust-proof inner cover, and the dust-proof filter net therebetween are first positioned by positioning components and then fixed together by a plurality of fasteners.

[0011] In some embodiments, a plurality of positioning posts extending outward perpendicular to this surface are fixed on the inner side surface of the dust-proof outer cover; a plurality of positioning holes I corresponding to the positioning posts one by one are formed in the dust-proof filter net, and a plurality of positioning holes II corresponding to the positioning posts one by one are formed in the dust-proof inner cover; the positioning posts and the positioning holes cooperate to form the positioning components, and when the positioning posts are inserted into the corresponding positioning holes I and positioning holes II, the positioning of the three is achieved.

[0012] In some embodiments, the periphery of the positioning holes I on the dust-proof filter net is coated with glue for reinforcement.

[0013] In some embodiments, a plurality of light holes are formed in the dust-proof outer cover, and threaded holes corresponding to the light holes one by one are formed in the dust-proof inner cover; the screw and the light hole and the threaded hole cooperate to form the fastener, and the threaded rod of the screw passes through the light hole and is then screwed into the threaded hole.

[0014] In some embodiments, the upper card slot is a U-shaped slot opening towards the upper side plate of the transfer case observation hole, and the lower card slot is a U-shaped slot opening towards the lower side plate of the transfer case observation hole. By adjusting the distance between the dust-proof outer cover and the dust-proof inner cover, the opening sizes of the upper and lower U-shaped slots are changed, so as to tightly clamp the split dust-proof cover in the transfer case observation hole.

[0015] In some embodiments, a heat dissipation grille I is provided on each of the top plate and the side plate of the dust-proof outer cover, and a heat dissipation grille II having the same structure as the heat dissipation grille I is provided on each of the top plate and the side plate of the dust-proof inner cover.

[0016] In some embodiments, both the dust-proof outer cover and the dust-proof inner cover are made of metal materials.

[0017] In a second aspect, the present invention provides a transfer case, including a flywheel connection housing, and a plurality of observation holes are evenly spaced along the circumference of the flywheel connection housing, and the above-mentioned split dust-proof cover is installed in each of the observation holes.

[0018] In a third aspect, the present invention provides an excavator, which is installed with the above-mentioned split dust-proof cover; or, is installed with the above-mentioned transfer case.

[0019] Advantages of the present invention:

[0020] The utility model solves the problem that when the excavator works with the observation hole of the traditional transfer case in the normally open state, dust and foreign matters accumulate in the flywheel connecting housing to form sludge, affecting the meshing of gear parts and thus causing early failures. By improving the structure and materials, the problems of the traditional elastic material sealing device affecting heat dissipation, low structural strength, and being easily aged and deteriorated by the environment are solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings, as part of the utility model, are used to provide a further understanding of the utility model. The schematic embodiments and descriptions thereof of the utility model are used to explain the utility model, but do not constitute an improper limitation of the utility model. Obviously, the drawings in the following description are only some embodiments, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0022] In the drawings:

[0023] Figure 1 is a schematic structural diagram of the split dust-proof cover assembly of the utility model;

[0024] Figure 2 is a schematic cross-sectional view of the split dust-proof cover of the utility model;

[0025] Figure 3 is a three-dimensional structural diagram of the dust-proof outer cover of the utility model;

[0026] Figure 4 is a three-dimensional structural diagram of the dust-proof inner cover of the utility model;

[0027] Figure 5 is a three-dimensional structural diagram of the screw structure of the utility model;

[0028] Figure 6 is a three-dimensional structural schematic of the split dust-proof cover of the utility model assembled to the transfer case Figure 1 ;

[0029] Figure 7 is a three-dimensional structural schematic of the split dust-proof cover of the utility model assembled to the transfer case Figure 2 .

[0030] BRIEF DESCRIPTION OF THE DRAWINGS: 1 - dust-proof outer cover, 2 - screw, 3 - dust-proof inner cover, 4 - dust-proof filter screen, 5 - heat dissipation grille I, 6 - heat dissipation grille II, 7 - positioning post, 8 - positioning hole II, 9 - light hole, 10 - threaded hole, 11 - upper card slot, 12 - lower card slot, 100 - flywheel connecting housing, 200 - split dust-proof cover.

[0031] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the utility model in any way, but to illustrate the concept of the utility model to those skilled in the art by referring to specific embodiments. Specific embodiments

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0033] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is 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 of the present utility model.

[0034] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] As Figure 1 、 Figure 2 shown, a split dust cover includes a dust-proof outer cover 1, a dust-proof inner cover 3, and a dust-proof filter screen 4; the dust-proof outer cover 1 is a bent plate for adapting to the shape of the transfer case observation hole, and a heat dissipation grille I 5 is provided on the dust-proof outer cover 1; the outer side of the dust-proof inner cover 3 is fitted and assembled with the inner side of the dust-proof outer cover 1. Both ends of the dust-proof inner cover 3 are bent multiple times to form a stepped structure and then form an upper card slot 11 and a lower card slot 12 with the dust-proof outer cover 1. The split dust cover is clamped in the transfer case observation hole through the upper and lower card slots. A heat dissipation grille II 6 communicating with the heat dissipation grille I 5 is provided on the dust-proof inner cover 3, ensuring the circulation of air and being beneficial to the heat dissipation of rotating parts; the dust-proof filter screen 4 is arranged between the heat dissipation grille I 5 and the heat dissipation grille II 6, and the dust-proof filter screen 4 can cover at least one heat dissipation grille to prevent foreign objects from entering the transfer case through the heat dissipation grille.

[0036] The utility model solves the problem that when the traditional hydraulic excavator is working, due to the observation hole in the flywheel connection housing between the transfer case and the engine being always open, and the input shaft of the transfer case and the coupling rotating at high speed, air quickly circulates through the observation hole, resulting in a large amount of dust and foreign matter depositing to form oil stains, hindering the normal meshing of the engine starting motor gear, and ultimately causing early damage to the engine starting motor. At the same time, by improving the structure, the problem that the traditional sealing device cuts off air circulation and affects heat dissipation is solved.

[0037] A further solution is as Figure 1 , Figure 2 shown, the dust-proof outer cover 1, the dust-proof inner cover 3, and the dust-proof filter screen 4 therebetween are first positioned by positioning components and then fixed together by a plurality of fasteners.

[0038] The connection relationship between the above-mentioned dust-proof outer cover and dust-proof inner cover is further described below.

[0039] As Figure 3 , Figure 4 , Figure 5 shown, a plurality of positioning posts 7 extending outward perpendicular to this surface are fixed on the inner side surface of the dust-proof outer cover 1; a plurality of positioning holes Ⅰ corresponding to the positioning posts 7 one by one are provided on the dust-proof filter screen 4, and a plurality of positioning holes Ⅱ 8 corresponding to the positioning posts 7 one by one are provided on the dust-proof inner cover 3; the positioning posts 7 and the positioning holes cooperate to form a positioning component, and when the positioning posts 7 are inserted into the corresponding positioning holes Ⅰ and positioning holes Ⅱ 8, the positioning of the three is realized.

[0040] A further solution is that the periphery of the positioning holes Ⅰ on the dust-proof filter screen 4 is reinforced by gluing.

[0041] Continuing to refer to Figure 3 , Figure 4 , Figure 5 shown, a plurality of light holes 9 are provided on the dust-proof outer cover 1, and threaded holes 10 corresponding to the light holes 9 one by one are provided on the dust-proof inner cover 3; the screw 2 and the light holes 9 and threaded holes 10 cooperate to form a fastener, and the threaded rod of the screw 2 passes through the light hole 9 and is then screwed tightly into the threaded hole 10.

[0042] The specific installation method is as follows: the positioning holes Ⅰ on the dust-proof filter screen 4 are installed through the positioning posts 7 on the dust-proof outer cover 1, the positioning posts 7 on the dust-proof outer cover 1 are installed through the positioning holes Ⅱ 8 on the dust-proof inner cover 3, the dust-proof outer cover 1 and the dust-proof inner cover 3 clamp the dust-proof filter screen 4 in the middle, and the screw 2 is connected and clamped through the light hole 9 of the dust-proof outer cover 1 and the threaded hole 10 of the dust-proof inner cover 3.

[0043] A further solution is as Figure 2As shown in the figure, the upper card slot 11 is a U-shaped slot opening towards the upper side plate of the transfer case observation hole, and the lower card slot 12 is a U-shaped slot opening towards the lower side plate of the transfer case observation hole. By adjusting the distance between the dust-proof outer cover 1 and the dust-proof inner cover 3, the opening sizes of the upper and lower U-shaped slots are changed, so that the split dust-proof cover is tightly clamped in the transfer case observation hole.

[0044] In a further solution, a heat dissipation grille I 5 is provided on each of the top plate and the side plate of the dust-proof outer cover 1, and a heat dissipation grille II 6 having the same structure as the heat dissipation grille I 5 is provided on each of the top plate and the side plate of the dust-proof inner cover 3.

[0045] In a further solution, both the dust-proof outer cover 1 and the dust-proof inner cover 3 are made of metal material.

[0046] As Figure 6 、 Figure 7 As shown in the figure, the three-dimensional schematic diagram of the split dust-proof cover 200 installed on the transfer case, that is, a plurality of observation holes are evenly distributed at intervals along the circumferential direction of the flywheel connecting housing 100, and the above-mentioned split dust-proof cover 200 is installed in each observation hole. The stepped structure of the dust-proof outer cover and the dust-proof inner cover cooperates with the transfer case observation hole, and a groove is formed by clamping with screws to limit its freedom of movement. When the machine is running, dust is filtered through the dust-proof filter screen, and the dust-proof cover is of a split structure, which is easy to disassemble, replace the filter screen and assemble. The dust-proof outer cover and the dust-proof inner cover have a heat dissipation grille structure, which can ensure the heat dissipation requirements.

[0047] By assembling the above-mentioned split dust-proof cover, the problem that when the excavator works in the normally open state of the traditional transfer case observation hole, dust and foreign matters accumulate in the flywheel connecting housing to form sludge, affecting the meshing of gear parts and then causing early failures is solved. By improving the structure and materials, the problems of the traditional elastic material sealing device affecting heat dissipation, low structural strength, and being easily affected by the environment and aging and deteriorating are solved.

[0048] The excavator provided by the present invention will be described below. The excavator described below can be mutually corresponding and referred to with the split dust-proof cover and the transfer case described above.

[0049] An excavator provided by the present invention may include the split dust-proof cover described in any one of the above embodiments; or, it may include the transfer case described in any one of the above embodiments.

[0050] The beneficial effects achieved by the excavator provided by the present invention are consistent with the beneficial effects achieved by the split dust-proof cover and the transfer case provided by the present invention, so they will not be elaborated here.

[0051] It should be noted that the above-mentioned excavator may be a crawler excavator or a wheeled excavator.

[0052] In the description provided herein, numerous specific details are set forth. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures and technologies have not been shown in detail so as not to obscure the understanding of this description.

[0053] In addition, those skilled in the art will understand that although some of the embodiments described herein include certain features contained in other embodiments but not others, the combinations of the features of different embodiments are equally within the scope of protection of the present invention and form different embodiments. For example, in the above embodiments, those skilled in the art can use them in a combined manner according to the known technical solutions and the technical problems to be solved by this application.

[0054] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present invention, can make some changes or modifications to the equivalent embodiments with equivalent changes by using the technical content prompted above. However, as long as the content does not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A split dust cover, characterized in that: include: The dustproof cover is a bent plate, which is used to adapt to the shape of the transfer case observation hole, and the dustproof cover is provided with a heat dissipation grille I; The dustproof inner cover, whose outer side is fitted with the inner side of the dustproof outer cover, and both ends of the dustproof inner cover are bent multiple times to form a step structure, and then form an upper clamping groove and a lower clamping groove with the dustproof outer cover, and the split dustproof cover is clamped in the transfer case observation hole through the upper and lower clamping grooves, and the dustproof inner cover is provided with a heat dissipation grille II connected with the heat dissipation grille I; The dust filter is arranged between the radiator grille I and the radiator grille II. The dust filter can cover at least one radiator grille to prevent foreign matter from entering the transfer case through the radiator grille.

2. A split dust cover according to claim 1, characterized in that: The dustproof outer cover, the dustproof inner cover and the dustproof filter screen therebetween are first positioned by a positioning component and then fixed together by a plurality of fasteners.

3. A split dust cover according to claim 2, characterized in that: A plurality of positioning posts extending outwardly perpendicular to the inner side surface of the dustproof outer cover are fixed to the inner side surface of the dustproof outer cover; The dustproof filter is provided with a plurality of positioning holes I corresponding to the positioning posts one by one, and the dustproof inner cover is provided with a plurality of positioning holes II corresponding to the positioning posts one by one; The positioning post and the positioning hole cooperate to form the positioning component. When the positioning post is inserted into the corresponding positioning hole I and positioning hole II, the positioning of the three is achieved.

4. A split dust cover according to claim 3, characterized in that: The positioning hole I on the dustproof filter is reinforced by applying glue around it.

5. The split dust cover according to claim 2, characterized in that: The dustproof outer cover is provided with a plurality of light holes, and the dustproof inner cover is provided with threaded holes corresponding to the light holes one by one; The screw cooperates with the light hole and the threaded hole to form the fastener, and the threaded rod of the screw passes through the light hole and is screwed into the threaded hole.

6. The split dust cover according to claim 1, characterized in that: The upper slot is a U-shaped slot opening toward the upper side plate of the transfer case observation hole, and the lower slot is a U-shaped slot opening toward the lower side plate of the transfer case observation hole. The opening sizes of the upper and lower U-shaped slots are changed by adjusting the distance between the dustproof outer cover and the dustproof inner cover, so that the split dust cover can be tightly clamped in the transfer case observation hole.

7. The split dust cover according to claim 1, characterized in that: A heat dissipation grille I is respectively provided on the top plate and the side plate of the dustproof outer cover, and a heat dissipation grille II having the same structure as the heat dissipation grille I is respectively provided on the top plate and the side plate of the dustproof inner cover.

8. The split dust cover according to claim 1, characterized in that: The dustproof outer cover and the dustproof inner cover are both made of metal.

9. A transfer case, comprising a flywheel connection housing, with a plurality of observation holes evenly spaced along the circumference of the flywheel connection housing, characterized in that: A split dust cover according to any one of claims 1 to 8 is installed in each of the observation holes.

10. An excavator, characterized in that: A split dust cover according to any one of claims 1 to 8 is installed; or a transfer case according to claim 9 is installed.

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