Middle support for large loader

Abstract

The utility model discloses an intermediate support for a large-scale loader, which solves the problems that the middle part of the intermediate support is easy to damage and dust is easy to enter in the prior art, and has the beneficial effects of enhancing the strength of the middle part of the intermediate support and effectively enhancing the dustproof capability. Comprising a first coupler and a second coupler which are oppositely arranged, one side of the second coupler penetrates through a shell to be connected with the first coupler, dust covers are sequentially arranged on the first coupler in the circumferential direction, the first coupler is fixedly connected with one end of the shell through the dust covers, and a first fastener penetrates through the first coupler to be connected with one end of the second coupler. The first oil seal and the first tapered roller bearing are located on the inner side of the shell, an oil seal seat is arranged in the annular direction of the second coupler and fixedly connected with one end of the shell, and the part, located in the shell, of the second coupler sequentially penetrates through the second oil seal, the second tapered roller bearing, the spacer bush, the first tapered roller bearing and the first oil seal.

Description

Technical Field

[0001] The utility model relates to the technical field of loaders, in particular to an intermediate support for large loaders. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] The loader is an earthwork construction machine used in construction projects in multiple fields. The loader has a strong carrying capacity. The loader transmission mechanism uses an intermediate support, and the intermediate support structure includes a pair of connected couplings. The inventor found that the intermediate support of the existing loader has the following problems:

[0004] The intermediate support structure is not set up properly, the middle part is easily damaged, the oil seals and bearings are exposed, dust can easily enter, and the service life of the intermediate bearing is affected;

[0005] The bearings used have a small load capacity and are not suitable for large loaders;

[0006] The preload of the bearing is adjusted by installing washers on the spacers. Washers are not easy to install or replace in narrow spaces. Utility Model Content

[0007] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an intermediate support for a large loader, which has a reasonable structure, is not easily damaged in the middle, and effectively improves the bearing capacity of the bearing.

[0008] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0009] An intermediate support for a large loader includes a first coupling and a second coupling which are arranged opposite to each other, one side of the second coupling passes through a housing and is connected to the first coupling, a dust cover is sequentially arranged in an annular direction on the first coupling, the first coupling is fixedly connected to one end of the housing through the dust cover, a first fastener passes through the first coupling and is connected to one end of the second coupling, a first oil seal and a first tapered roller bearing are located inside the housing, an oil seal seat is arranged in an annular direction on the second coupling, the oil seal seat is fixedly connected to one end of the housing, and a portion of the second coupling located in the housing passes through the second oil seal, the second tapered roller bearing, a spacer, the first tapered roller bearing and the first oil seal in sequence;

[0010] The first tapered roller bearing and the second tapered roller bearing are arranged opposite to each other, the spacer has a set thickness, and the spacer can be replaced with a spacer with different thicknesses to adjust the preload of the first tapered roller bearing and the second tapered roller bearing through the spacers of different thicknesses.

[0011] The intermediate support for a large loader as described above, wherein the second coupling comprises a second claw, an arc segment, a first stage, a second stage and a third stage connected in sequence, the first stage cooperates with the oil seal seat, the second stage cooperates with the second oil seal and the second tapered roller bearing, and the third stage cooperates with the spacer sleeve;

[0012] The second clamping claw comprises a plurality of second mounting claws, each second mounting claw is provided with a second opening, and an angle is set between two adjacent mounting claws.

[0013] As described above, in the intermediate support for a large loader, the second coupling further includes a fourth stage connected to the third stage, and the fourth stage cooperates with the first tapered roller bearing and the first oil seal.

[0014] According to the intermediate support for a large loader as described above, the second coupling further comprises a toothed section connected to the fourth stage, a recess is provided on the side of the first coupling facing the second coupling, and the toothed section cooperates with the recess;

[0015] The outer diameter of the fourth stage, the outer diameter of the third stage, the outer diameter of the second stage, and the outer diameter of the first stage increase in sequence.

[0016] As described above, in the intermediate support for a large loader, the second coupling is provided with a fifth stage at one end of the tooth groove section away from the fourth stage, and the fifth stage cooperates with the step in the recess.

[0017] The intermediate support for a large loader as described above, the dust cover comprises a first section and a second section connected in sequence, the first section is located in the circumferential direction of the first coupling, the second section is located in the circumferential direction of the housing, and the first section and the second section are connected in a circular arc transition;

[0018] The inner diameter of the second section is greater than the inner diameter of the first section.

[0019] In the intermediate support for a large loader as described above, the first coupling comprises a first claw, a first truncated cone segment and a first annular segment connected in sequence, and the recess is arranged in the first annular segment;

[0020] The first clamping claw comprises a plurality of first mounting claws, each of which is provided with a plurality of first openings, and an angle is set between two adjacent first mounting claws.

[0021] The intermediate support for a large loader as described above, wherein the housing comprises a second truncated cone section, a second annular section and an end plate connected in sequence, the second annular section is connected to the end plate in an arc transition, a third opening is provided on the inner side of the end plate, and a fourth opening is provided on the outer side of the end plate;

[0022] The shell body is provided with ventilation holes in a circumferential direction, and ventilation plugs are provided at the ventilation holes.

[0023] In the intermediate support for a large loader as described above, the second fastener passes through the oil seal seat and is connected to the third opening.

[0024] In the intermediate support for a large loader as described above, the first fastener is a fastening bolt, which passes through a gasket and a seal and then passes through the first coupling.

[0025] The beneficial effects of the above utility model are as follows:

[0026] 1) In the utility model, an intermediate support is provided, and the intermediate support structure is reasonably arranged. One side of the second coupling passes through the housing and is connected to the first coupling. The housing is located in the middle to protect all oil seals and tapered roller bearings, thereby enhancing the middle strength of the intermediate support and effectively enhancing the dustproof ability. A pair of tapered roller bearings is adopted to greatly improve the bearing capacity of the intermediate support, which is more suitable for large loaders. The spacer sleeve can be replaced with spacers of different thicknesses, so that the preload force of the first tapered roller bearing and the second tapered roller bearing can be adjusted by spacers of different thicknesses. During installation, spacers of different thicknesses are relatively easy to replace and install.

[0027] 2) The structure of the second coupling in the utility model is reasonably arranged. One end of the second coupling is inserted into the recess of the first coupling, which is convenient for positioning and installation of the two. The second coupling is provided with multiple stages for installing corresponding components, which is beneficial for installation of each component. The second coupling is located on one side of the shell as the second claw. The interval angle between two adjacent second mounting claws in the second claw is set, which effectively makes space and is beneficial for connection of the second coupling with other components.

[0028] 3) The structure of the first coupling in the utility model is reasonably arranged. The first coupling has a first annular segment that can be inserted into the inner side of the shell. The first annular segment is connected to the first truncated cone segment, and the first truncated cone segment is connected to the first claw. The first claw also includes multiple first mounting claws. Two adjacent first mounting claws also make room for the connection between the first coupling and other components, and also make the center of the first claw lower than the first mounting claw, which is beneficial to shorten the length of the first fastener and to ensure the stable and reliable connection between the first coupling and the second coupling.

[0029] 4) The setting of the intermediate support in the utility model, one side of the first coupling and the second coupling are respectively set through the shell, one end of the shell is connected to the dust cover, and the other end is reliably connected to the oil seal seat, which not only effectively ensures the overall structural strength, but also the dust cover is cleverly set, effectively preventing dust from entering the oil seal and bearing, thereby ensuring the service life of the intermediate bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0031] Figure 1 It is a schematic diagram of an intermediate support for a large loader according to one or more embodiments of the utility model.

[0032] Figure 2 It is an exploded schematic diagram of an intermediate support for a large loader according to one or more embodiments of the utility model.

[0033] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0034] Wherein: 1. first coupling, 2. dust cover, 3. housing, 4. second coupling, 5. first fastener, 6. first oil seal, 7. first tapered roller bearing, 8. spacer, 9. second tapered roller bearing, 10. second oil seal, 11. oil seal seat, 12. second fastener;

[0035] 1-1. First claw, 1-2. First truncated cone segment, 1-3. First annular segment;

[0036] 2-1. The first paragraph, 2-2. The second paragraph;

[0037] 3-1. The second truncated cone segment, 3-2. The second annular segment, 3-3. The end plate, 3-4. The air-permeable plug;

[0038] 4-1. The second claw, 4-2. The arc segment, 4-3. The first stage, 4-4. The second stage, 4-5. The third stage, 4-6. The fourth stage, 4-7. The tooth groove segment, 4-8. The fifth stage;

[0039] 5-1. First gasket, 5-2. Sealing member;

[0040] 12-1. Second gasket. DETAILED DESCRIPTION

[0041] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0042] 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 invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or their combinations;

[0043] As introduced in the background technology, the middle part of the intermediate support in the prior art is easily damaged and dust easily enters. In order to solve the above technical problems, the utility model proposes an intermediate support for a large loader.

[0044] In a typical implementation of the present invention, reference is made to Figure 1 , Figure 2 As shown, an intermediate support for a large loader includes a first coupling 1 and a second coupling 4 that are arranged opposite to each other, one side of the second coupling 4 passes through a housing 3 and is connected to the first coupling 1, a dust cover 2 is sequentially arranged circumferentially on the first coupling 1, the first coupling 1 is fixedly connected to one end of the housing 3 through the dust cover 2, a first fastener 5 passes through the first coupling 1 and is connected to one end of the second coupling 2, a first oil seal 6 and a first tapered roller bearing 7 are located on the inner side of the housing 3, an oil seal seat 11 is arranged circumferentially on the second coupling 4, the oil seal seat 11 is fixedly connected to one end of the housing 3, and a portion of the second coupling 4 located in the housing 3 passes through a second oil seal 10, a second tapered roller bearing 9, a spacer 8, a first tapered roller bearing 7 and a first oil seal 6 in sequence;

[0045] The first tapered roller bearing 7 and the second tapered roller bearing 9 are arranged relatively to each other, and the spacer sleeve 8 has a set thickness. During the existing installation, a plurality of spacers of different thicknesses are arranged, and the spacers can be replaced with spacers of different thicknesses to adjust the preload of the first tapered roller bearing and the second tapered roller bearing through spacers of different thicknesses.

[0046] It should be noted that the first coupling 1 includes a first claw 1-1, a first truncated cone segment 1-2 and a first annular segment 1-3 which are connected in sequence. A recess is arranged in the first annular segment 1-3. The length of the first truncated cone segment 1-2 is less than the length of the first annular segment 1-3. The minimum outer diameter of the first truncated cone segment 1-2 is greater than the outer diameter of the first annular segment 1-3, so as to achieve a smooth transition of the first coupling 1. The first claw is arranged for connecting the first coupling with other components. The arrangement of the first truncated cone segment facilitates the transition between the first claw and the first annular segment. One side of the first annular segment can be inserted into one side of the housing.

[0047] The first clamping claw 1-1 includes a first central section, and multiple first mounting claws are arranged on the circumference of the first central section. The diameter of the circle where the multiple first mounting claws are located is larger than the diameter of the first central section, for example, 3 places. Each first mounting claw is provided with multiple first openings, and the interval angle between two adjacent first mounting claws is set. In this way, the outer end surface of the first mounting claw exceeds the first central section, which is conducive to shortening the length of the first fastener and ensuring the stable and reliable connection between the first coupling 1 and the second coupling 4.

[0048] Starting from the end away from the first coupling 1, the second coupling 4 includes a second claw 4-1, an arc segment 4-2, a first stage 4-3, a second stage 4-4 and a third stage 4-5 connected in sequence, the arc segment 4-2 makes the first stage 4-3 and one end of the second claw 4-1 form an arc transition, the first stage 4-3 cooperates with the oil seal seat 11, the second stage 4-4 cooperates with the second oil seal 10 and the second tapered roller bearing 9, and the third stage cooperates with the spacer 8;

[0049] It is easy to understand that the second coupling 4 also includes a fourth stage 4-6 connected to the third stage, and the fourth stage 4-6 cooperates with the first tapered roller bearing 7 and the first oil seal 6; the second coupling also includes a tooth groove section connected to the fourth stage, the tooth groove section 4-7 has a set length, and the first coupling is provided with a recess on the side facing the second coupling 4, and the tooth groove section cooperates with the recess, that is, the tooth groove section is inserted into the recess; the second coupling is provided with a fifth stage 4-8 at the end of the tooth groove section 4-6 away from the fourth stage, and the fifth stage 4-8 cooperates with the step in the recess to position the installation of the second coupling when the second coupling is inserted into the first coupling.

[0050] It is easy to understand that the outer diameters of the fifth stage, the fourth stage, the third stage, the second stage and the first stage increase successively, which is conducive to positioning the installation of corresponding components through the steps between two adjacent stages.

[0051] Taking into account the arrangement of various structural parts, the length of the fifth stage 4-8 is shorter than that of the fourth stage 4-6, the length of the third stage is longer than that of the fourth stage to match the spacer sleeve, and the length of the second stage is shorter than that of the first stage.

[0052] Similarly, the second clamping claw 4-1 includes a second central segment, and a plurality of second mounting claws are arranged on the peripheral side of the second central segment, for example, there may be 3 of them, and the diameter of the circle where the plurality of second mounting claws are located is larger than the diameter of the second central segment, so that the second clamping claw opens outward, and each second mounting claw is provided with a second opening, and the interval angle between two adjacent mounting claws is set; the first opening and the second opening are through holes or threaded holes.

[0053] refer to Figure 2As shown, the dust cover 2 includes a first section 2-1 and a second section 2-2 connected in sequence, the first section is located in the annular direction of the first annular section 1-3 of the first coupling, the inner diameter of the first section is adapted to the outer diameter of the first annular section, the second section is located in the annular direction of the housing, and the first section and the second section are connected in a circular arc transition;

[0054] The inner diameter of the second section 2-2 is greater than the inner diameter of the first section 2-1, and the inner diameter of the second section gradually increases from one side to the other side of the first section to match with one side of the shell.

[0055] In this embodiment, the housing 3 includes a second truncated cone section 3-1, a second annular section 3-2 and an end plate which are connected in sequence. The length of the second truncated cone section 3-1 is greater than the length of the second section 2-2 of the dust cover. The length of the second annular section 3-2 is greater than the length of the second truncated cone section 3-1. The second annular section is connected to the end plate 3-3 by an arc transition. The diameter of the end plate 3-3 is greater than the diameter of the second annular section 3-2. The end plate 3-3 has a set thickness. A third opening is provided on the inner side of the end plate 3-3. A second fastener 12 such as a fastening bolt passes through the second gasket 12-1 and the oil seal seat 11 and is connected to the third opening. A fourth opening is provided on the outer side of the end plate. The fourth opening is used for connecting the end plate with other components. It can be understood that the third opening and the fourth opening are staggered.

[0056] It can be understood that a plurality of air holes are arranged in the annular direction of the second annular segment 3-2 of the shell, and an air plug 3-4 is arranged at each air hole, so that the shell can effectively ensure the sealing performance and prevent dust from entering while ventilating the central bearing, oil seal and other components.

[0057] Specifically, the first fastener 5 is a fastening bolt, which passes through the first washer 5-1 and the seal 5-2 (O-ring) and then passes through the first coupling 1;

[0058] It needs to be explained that the first tapered roller bearing 7, the second tapered roller bearing 9, the spacer sleeve 8, the first oil seal 6, the second oil seal 10, and the oil seal seat 11 are all prior art, and the specific structure will not be repeated.

[0059] As mentioned above, through the provision of the intermediate support, the intermediate support structure is reasonably arranged, one side of the second coupling passes through the shell and is connected to the first coupling, and the shell is located in the middle to protect all oil seals and tapered roller bearings, enhance the middle strength of the intermediate support, and effectively enhance the dustproof ability; a pair of tapered roller bearings are used to greatly improve the carrying capacity of the intermediate support, which is more suitable for large loaders; the spacer can be replaced with spacers of different thicknesses, so as to adjust the preload of the first tapered roller bearing and the second tapered roller bearing through spacers of different thicknesses. During installation, spacers of different thicknesses are relatively easy to replace and install.

[0060] The above description is only the preferred embodiment of the utility model, and is 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 principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An intermediate support for a large loader, characterized in that: It comprises a first coupling and a second coupling which are arranged opposite to each other, one side of the second coupling passes through a housing and is connected to the first coupling, a dust cover is sequentially arranged in an annular direction on the first coupling, the first coupling is fixedly connected to one end of the housing through the dust cover, a first fastener passes through the first coupling and is connected to one end of the second coupling, a first oil seal and a first tapered roller bearing are located inside the housing, an oil seal seat is arranged in an annular direction on the second coupling, the oil seal seat is fixedly connected to one end of the housing, and a portion of the second coupling located in the housing passes through the second oil seal, the second tapered roller bearing, a spacer, the first tapered roller bearing and the first oil seal in sequence; The first tapered roller bearing and the second tapered roller bearing are arranged opposite to each other, the spacer has a set thickness, and the spacer can be replaced by a spacer with a different thickness.

2. The intermediate support for a large loader according to claim 1, characterized in that: The second coupling comprises a second claw, an arc segment, a first stage, a second stage and a third stage connected in sequence, the first stage cooperates with the oil seal seat, the second stage cooperates with the second oil seal and the second tapered roller bearing, and the third stage cooperates with the spacer sleeve; The second clamping claw comprises a plurality of second mounting claws, each second mounting claw is provided with a second opening, and an angle is set between two adjacent mounting claws.

3. The intermediate support for a large loader according to claim 2, characterized in that: The second coupling further includes a fourth stage connected to the third stage, and the fourth stage cooperates with the first tapered roller bearing and the first oil seal.

4. The intermediate support for a large loader according to claim 3, characterized in that: The second coupling further comprises a toothed section connected to the fourth stage, a recess is arranged on a side of the first coupling facing the second coupling, and the toothed section cooperates with the recess; The outer diameter of the fourth stage, the outer diameter of the third stage, the outer diameter of the second stage, and the outer diameter of the first stage increase in sequence.

5. The intermediate support for a large loader according to claim 4, characterized in that: The second coupling is provided with a fifth step at one end of the tooth groove section away from the fourth step, and the fifth step cooperates with the step in the recess.

6. The intermediate support for a large loader according to claim 1, characterized in that: The dust cover comprises a first section and a second section connected in sequence, the first section is located in the circumferential direction of the first coupling, the second section is located in the circumferential direction of the housing, and the first section and the second section are connected in a circular arc transition; The inner diameter of the second section is greater than the inner diameter of the first section.

7. The intermediate support for a large loader according to claim 4, characterized in that: The first coupling comprises a first claw, a first truncated cone segment and a first annular segment connected in sequence, and the recess is arranged in the first annular segment; The first clamping claw comprises a plurality of first mounting claws, each of which is provided with a plurality of first openings, and an angle is set between two adjacent first mounting claws.

8. The intermediate support for a large loader according to claim 1, characterized in that: The shell comprises a second truncated cone section, a second annular section and an end plate connected in sequence, the second annular section is connected to the end plate in an arc transitional manner, a third opening is arranged on the inner side of the end plate, and a fourth opening is arranged on the outer side of the end plate; The shell body is provided with ventilation holes in a circumferential direction, and ventilation plugs are provided at the ventilation holes.

9. The intermediate support for a large loader according to claim 8, characterized in that: The second fastener passes through the oil seal seat and is connected to the third opening.

10. The intermediate support for a large loader according to claim 1, characterized in that: The first fastener is a fastening bolt, which passes through a gasket and a sealing member and then passes through the first coupling.

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