Fixed maintenance device for planet wheel of mining dump truck

Abstract

The utility model relates to a fixing maintenance device for a planet wheel of a mining dump truck. The fixing maintenance device comprises a shell, a planet wheel support and a rear cover support. The planet wheel support and the rear cover support are both located in the shell. The shell is wrapped and sealed by an oil-proof iron plate, so that environmental pollution caused by oil contamination falling to the ground is effectively avoided; and by arranging the planet wheel support and the rear cover support, fixed storage of the planet wheel and the rear cover is achieved, and maintenance and the follow-up combination and installation process are facilitated. Meanwhile, a rolling positioning bearing is arranged on the planet wheel support, so that the planet wheel is axially parallel to the ground, the safety in the planet wheel hoisting process is improved, and comprehensive inspection and maintenance of the planet wheel are facilitated.

Description

Technical Field

[0001] The utility model relates to a fixed-position maintenance device, in particular to a fixed-position maintenance device for planetary gears of mining dump trucks. Background Art

[0002] The statements herein only provide background art related to the utility model and do not necessarily constitute prior art.

[0003] The SF31904 type mining dump truck has a self-weight of 85 tons and a load capacity of about 108 tons. It is the main mining equipment of the open-pit coal mine and is widely used in major coal mines across the country. As an important part of the mining dump truck, the daily maintenance of the wheel side reducer helps the normal operation of the vehicle. The wheel side reducer of the mining dump truck usually includes three planetary gears and a rear cover. In the traditional maintenance process, it is often necessary to perform floor maintenance on the planetary gears and the rear cover. During this process, the inventor found the following technical problems:

[0004] (1) During the floor maintenance process, the planetary gears will tilt, which will lead to safety problems such as skewed pulling during hoisting operations. At the same time, during the maintenance process, since the planetary gears are placed on the ground, it is necessary to continuously adjust the positions of the planetary gears for inspection, measurement, and cleaning and maintenance, and the maintenance efficiency is not high.

[0005] (2) On the other hand, during the floor maintenance process, the planetary gears and the rear cover are placed in a mess, which is not conducive to maintenance and assembly after maintenance. At the same time, the oil stains carried by them are not easy to clean after contacting the ground, which will cause certain environmental pollution. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a fixed-position maintenance device for planetary gears of mining dump trucks, including: a housing, a planetary gear support, and a rear cover support; both the planetary gear support and the rear cover support are located inside the housing;

[0007] The planetary gear support includes a first balance beam, a second balance beam, a first support frame for supporting the first balance beam, and a second support frame for supporting the second balance beam. The height of the second support frame is higher than that of the first support frame;

[0008] The rear cover support is located on one side inside the housing and includes a first guardrail and a second guardrail. The bottoms of the first guardrail and the second guardrail are fixedly connected to the housing, and the first guardrail is welded to the first balance beam and the second balance beam.

[0009] As a further technical solution, the bottom surface and side surface of the housing are wrapped and sealed with anti-oil iron plates.

[0010] As a further technical solution, the first balance beam and the second balance beam are arranged in parallel.

[0011] As a further technical solution, the first balance beam is provided with a first pair of rolling bearings, and the second balance beam is provided with a second pair of rolling bearings; the first pair of rolling bearings and the second pair of rolling bearings are symmetrical to each other.

[0012] As a further technical solution, the distance between the two rolling bearings in the first pair of rolling bearings is less than the distance between the two rolling bearings in the second pair of rolling bearings.

[0013] As a further technical solution, the first balance beam is welded to the first support frame; the second balance beam is welded to the second support frame.

[0014] As a further technical solution, the bottoms of the first support frame and the second support frame are welded to the housing.

[0015] As a further technical solution, the first support frame and the second support frame are symmetrically arranged. There are two first support frames and two second support frames, which are respectively located at the one-third positions of the first balance beam and the second balance beam.

[0016] As a further technical solution, two fixing rods are further installed at the bottom of the rear cover support.

[0017] As a further technical solution, the materials of the planet gear support and the rear cover support are ordinary steel materials.

[0018] Advantages of the above one or more technical solutions:

[0019] (1) By providing the planet gear support and the rear cover support, the fixed placement of the planet gear and the rear cover is realized, which is convenient for maintenance and subsequent combined installation.

[0020] (2) By symmetrically arranging rolling bearings on the balance beam and setting the height of the second support frame higher than that of the first support frame, it can ensure that the three planet gears are placed axially parallel to the ground, and the 360-degree free rotation of the planet gears can be realized. This not only ensures the safety of hoisting operations and fundamentally solves the safety problem of oblique pulling and dragging, but also facilitates the comprehensive inspection and maintenance of the planet gears.

[0021] (3) By wrapping and sealing the bottom and side surfaces of the housing with anti-oil iron plates, it effectively avoids environmental pollution caused by oil stains falling to the ground, avoids the problem of a large amount of use of oil cloth and plastic for recycling oil stains, and solves the problem of increasing secondary oil-containing waste. Description of the Drawings

[0022] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute a limitation on the present application.

[0023] Figure 1 It is the structural front view of the utility model.

[0024] Figure 2 It is a structural side view of the utility model.

[0025] Figure 3 It is a top view of the structure of the utility model.

[0026] In the figure, 1 is a housing; 2 is a first balance beam; 3 is a second balance beam; 4 is a first support frame; 5 is a second support frame; 6 is a first guardrail; 7 is a second guardrail; 8 is a first rolling bearing pair; 9 is a second rolling bearing pair; 10 is a fixing rod; 11 is a connecting rod DETAILED DESCRIPTION

[0027] The following is combined with Figures 1-3 , describing the specific implementation of this embodiment.

[0028] The present application embodiment provides a fixed maintenance device for a planetary gear of a mining dump truck, referring to Figure 1 A fixed maintenance device for a planetary wheel of a mining dump truck comprises a housing 1, a planetary wheel bracket and a rear cover bracket; the bottom and side surfaces of the housing 1 are wrapped and sealed with oil-proof iron plates, which can not only achieve the purpose of quickly cleaning the oil stains in the device, but also prevent the oil stains on the surface of the rear cover and the planetary wheel from dripping onto the ground, causing the oil stains to be difficult to clean and environmental pollution, thereby avoiding the problem of using a large amount of oilcloth and plastic in the process of recovering oil stains.

[0029] A planetary gear bracket and a rear cover bracket are also fixed inside the housing 1. The planetary gear bracket and the rear cover bracket are made of ordinary steel, which has high hardness and is not easy to deform, and can provide effective support for the planetary gear and the rear cover. At the same time, by setting the planetary gear bracket and the rear cover bracket, the problem of chaotic storage of the planetary gear and the rear cover during the maintenance of the wheel-side reducer can be effectively solved, which is not only convenient for maintenance, but also convenient for combined installation after maintenance, thereby improving maintenance efficiency.

[0030] Further, the planetary gear bracket includes a first balance beam 2, a second balance beam 3, a first support frame 4 for supporting the first balance beam 2, and a second support frame 5 for supporting the second balance beam 3. The first balance beam 2 and the second balance beam 3 are parallel to each other. There are two first support frames 4 and two second support frames 5 respectively. The first support frame 4 and the second support frame 5 are fixed to the bottom of the housing 1 by welding, and the first support frame 4 and the second support frame 5 are symmetrically arranged and welded at the one-third positions of the first balance beam 2 and the second balance beam 3 respectively, dividing the area enclosed by the first balance beam 2 and the second balance beam 3 into three planetary gear placement areas with equal areas. To ensure the stability of the first support frame 4 and the second support frame 5, a connecting rod 11 is also welded between the first support frame 4 and the second support frame 5, further ensuring the stability and firmness of the planetary gear bracket through the connecting rod 11.

[0031] Further, the height of the second support frame 5 is higher than that of the first support frame 4, so that the height of the second balance beam 3 is higher than that of the first balance beam 2. Since the front end of the planetary gear (the side of the large end face of the planetary gear is the front end) has a larger volume, the front end of the planetary gear is supported by the first balance beam 1, and the rear end of the planetary gear is supported by the second balance beam 2 with a higher height, which can ensure that the planetary gear is placed horizontally in the axial direction during storage, effectively preventing the internal structure of the planetary gear from tilting, and thus avoiding the safety problem of skewed pulling during hoisting.

[0032] Further, a first pair of rolling bearings 8 is also provided on the first balance beam 2, and a second pair of rolling bearings 9 is provided on the second balance beam 3. In this embodiment, three first pairs of rolling bearings 8 and three second pairs of rolling bearings 9 are provided, which are respectively located in the three planetary gear placement areas, and the first pair of rolling bearings 8 and the second pair of rolling bearings 9 are symmetrically arranged. The planetary gears in storage can be positioned through the first pair of rolling bearings 8 and the second pair of rolling bearings 9. At the same time, by using rolling bearings, the planetary gears can rotate freely by 360 degrees, and the operator can check the overall condition of the planetary gears and perform maintenance without repeatedly moving the planetary gears. In addition, since the volume of the front-end bearing of the planetary gear is larger than that of the rear-end bearing, the distance between the two rolling bearings in the first pair of rolling bearings 8 is greater than the distance between the two rolling bearings in the second pair of rolling bearings 9, ensuring a good fit between the planetary gear and the pair of rolling bearings and realizing the precise positioning during the placement of the planetary gear.

[0033] Furthermore, the rear cover support is located on one side of the housing and includes a first guardrail 6 and a second guardrail 7. One end of the first balance beam 2 and the second balance beam 3 is in contact with the first guardrail and welded. The bottoms of the first guardrail 6 and the second guardrail 7 are both welded to the bottom of the housing 1. To further enhance the support effect of the rear cover support, two fixing rods 10 are also welded between the first guardrail 6 and the second guardrail 7. The rear cover is stored vertically between the first guardrail 6 and the second guardrail 7. The vertical storage can not only reduce the floor area when storing the rear cover, but also enable quick access during subsequent installation.

[0034] The working principle of the device provided in this embodiment is as follows:

[0035] First, disassemble the wheel side reducer of the mining dump truck. Place the disassembled rear cover and three planetary gears on the planetary gear direct and the rear cover support respectively, achieving the fixed storage of the planetary gear and the rear cover. This not only facilitates maintenance and repair, but also facilitates the combined installation after maintenance, improving the overhaul efficiency. Use the support frame to adjust the heights of the first balance beam 2 and the second balance beam 3 to ensure that the planetary gear is horizontally placed on the planetary gear support along the axis, avoiding the safety problem of skew pulling and dragging of the planetary gear during hoisting. The rolling bearing pairs on the balance beam can not only achieve the positioning of the planetary gear during placement, but also enable the 360-degree rotation of the planetary gear, thereby realizing the inspection and maintenance of the overall condition of the planetary gear. The vertical storage of the rear cover is realized through the rear cover support composed of the first guardrail 6 and the second guardrail 7, which not only saves storage space, but also facilitates access for maintenance and repair. Use an anti-oil iron plate to wrap and seal the bottom and side surfaces of the housing, achieving the rapid cleaning of oil stains and avoiding environmental pollution caused by oil stains falling to the ground.

[0036] Although the specific implementation manners of the present invention are described above in conjunction with the drawings, it is not a limitation to the protection scope of the present invention. Those skilled in the art should understand that based on the technical solutions of the present invention, various modifications or deformations that can be made by those skilled in the art without creative labor are still within the protection scope of the present invention.

Claims

1. A fixed maintenance device for planetary gears of mining dump trucks, characterized in that: include: A housing, a planetary gear bracket and a rear cover bracket; the planetary gear bracket and the rear cover bracket are both located inside the housing; The planetary gear support comprises a first balance beam, a second balance beam, a first support frame for supporting the first balance beam, and a second support frame for supporting the second balance beam, wherein the height of the second support frame is higher than that of the first support frame; The rear cover bracket is located at one side of the shell, and includes a first guardrail and a second guardrail. The bottoms of the first guardrail and the second guardrail are fixedly connected to the shell, and the first guardrail is welded to the first balance beam and the second balance beam.

2. A fixed maintenance device for planetary gears of mining dump trucks as claimed in claim 1, characterized in that: The bottom and side surfaces of the shell are wrapped and sealed with oil-proof iron plates.

3. A fixed maintenance device for planetary gears of mining dump trucks as claimed in claim 1, characterized in that: The first balance beam and the second balance beam are arranged in parallel.

4. A fixed maintenance device for planetary gears of mining dump trucks as claimed in claim 1, characterized in that: The first balance beam is provided with a first rolling bearing pair, and the second balance beam is provided with a second rolling bearing pair; the first rolling bearing pair and the second rolling bearing pair are symmetrical to each other.

5. A fixed maintenance device for planetary gears of mining dump trucks as claimed in claim 4, characterized in that: The distance between the two rolling bearings in the first rolling bearing pair is smaller than the distance between the two rolling bearings in the second rolling bearing pair.

6. A fixed maintenance device for planetary gears of mining dump trucks as claimed in claim 1, characterized in that: The first balance beam is welded to the first support frame; the second balance beam is welded to the second support frame.

7. A fixed maintenance device for planetary gears of mining dump trucks as claimed in claim 1, characterized in that: The bottoms of the first support frame and the second support frame are welded to the shell.

8. The fixed maintenance device for the planetary gear of a mining dump truck according to claim 1, characterized in that: The first support frame and the second support frame are symmetrically arranged, and two of the first support frame and the second support frame are respectively located at the third positions of the first balance beam and the second balance beam.

9. A fixed maintenance device for planetary gears of mining dump trucks as claimed in claim 1, characterized in that: Two fixing rods are also installed at the bottom of the rear cover bracket.

10. A fixed maintenance device for planetary gears of a mining dump truck as claimed in claim 1, characterized in that: The planetary gear bracket and the rear cover bracket are made of ordinary steel.

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