Lubricating structure for mounting bearing on middle lower box body of mine truck

Abstract

The utility model discloses a lubricating structure for a mounting bearing of a middle lower box body of a mine truck, which is characterized in that a left oil passing hole and a right oil passing hole which penetrate through a mounting rib plate front and back are formed in the rear wall of a first-second gear rear end left bearing position and the rear wall of a first-second gear rear end right bearing position; a left oil baffle rib plate and a right oil baffle rib plate which protrude towards the inner space of the box body are arranged on the left inner wall and the right inner wall of the middle lower box body higher than a first-second gear rear end left bearing position and a first-second gear rear end right bearing position respectively, and a left oil guide groove and a right oil guide groove are formed between the left oil baffle rib plate and the inner wall of the middle lower box body and between the right oil baffle rib plate and the inner wall of the middle lower box body respectively. The left oil guide groove and the right oil guide groove are communicated with the left oil passing hole and the right oil passing hole respectively, so that lubricating oil splashed to the inner walls of the left side and the right side of the middle upper box body can flow to the left oil passing hole and the right oil passing hole along the left oil guide groove and the right oil guide groove. The device has the advantages that the first-gear and second-gear rear end left bearing and the first-gear and second-gear rear end right bearing can obtain sufficient lubricating oil; the structure is simple and setting is convenient.

Description

Technical Field

[0001] This utility model relates to a lubrication and monitoring structure for a bearing mounted in the lower intermediate housing of a mining truck, belonging to the field of gearbox lubrication technology. Background Technology

[0002] The multi-speed gearbox for mining trucks, requiring high load capacity and a relatively large first gear ratio, typically employs a three-stage reduction gear to minimize gear differences and ensure smooth shifting. The gearbox housing is a three-section design: a front housing, a middle housing, and a rear housing. A front-middle partition separates the front and middle housings, while a middle-rear partition separates the middle and rear housings. The middle housing itself is complex to manufacture and assemble as a single component, therefore it is divided into upper and lower middle housings.

[0003] The lower middle housing has the following features:

[0004] In the middle of the lower housing, there is a shaft mounting rib plate that is half the height of the lower housing. On the shaft mounting rib plate, there are left bearing positions for the first and second gear rear ends and right bearing positions for the first and second gear rear ends, respectively.

[0005] The rear end of the first and second gear left shaft extends from the front middle partition wall into the rear left bearing position, and the first and second gear rear left bearing of the first and second gear left shaft is installed in the rear left bearing position. The rear end of the first and second gear right shaft extends from the front middle partition wall into the rear right bearing position, and the first and second gear rear right bearing of the first and second gear right shaft is installed in the rear right bearing position.

[0006] On the first and second gear left shaft and the first and second gear right shaft between the shaft mounting stiffener and the front middle partition wall, there are respectively a second gear left drive gear and a second gear right drive gear;

[0007] A three-stage driven gear is provided between the shaft mounting stiffener and the middle and rear partition wall;

[0008] At the bottom of the middle lower housing, there is lubricating oil that can be stirred up by the third-gear driven gear.

[0009] The existing technology lubricates the left and right rear bearings of the first and second gears by relying on the flying sword lubricating oil formed by the lubricating oil stirred up by the third gear driven gear.

[0010] Due to obstruction by the front and middle partitions and the middle and rear partitions, the lubricating oil in the front and rear housings, which have a relatively large amount of splashing oil, cannot enter the middle housing to provide sufficient lubrication for the left and right bearings at the rear ends of first and second gear. Instead, it relies on the lubricating oil stirred up by the third gear driven gear for lubrication. However, because the third gear driven gear rotates at a lower speed, the amount of splashing lubricating oil it stirs up is less. In addition, the volume of the left and right bearings at the rear ends of first and second gear is limited, so the amount of oil it receives is even less. Therefore, it is difficult for the left and right bearings at the rear ends of first and second gear to receive sufficient lubrication when driving at low speeds. Utility Model Content

[0011] The technical problem to be solved by this utility model is: how to ensure that the left bearing at the rear end of the first and second gears and the right bearing at the rear end of the first and second gears, which are located in the middle lower housing, receive sufficient lubricating oil.

[0012] To address the above problems, the technical solution proposed by this utility model is as follows:

[0013] A lubrication structure for mounting bearings in the lower intermediate housing of a mining truck includes left and right oil passage holes with through-mounted ribs on the rear walls of the left and right bearing positions at the rear ends of first and second gears. Left and right oil baffles are respectively provided on the left and right inner walls of the lower intermediate housing, which are higher than the left and right bearing positions at the rear ends of first and second gears. The left and right oil baffles form left and right oil guide grooves with the inner walls of the lower intermediate housing, respectively. These grooves connect to the left and right oil passage holes, allowing lubricating oil splashed onto the inner walls of the upper intermediate housing to flow along the left and right oil guide grooves to the left and right oil passage holes.

[0014] The left and right oil baffle plates extend from the left and right ends of the mounting plates to the left and right ends of the front central partition wall, respectively.

[0015] A horizontal left oil trough and a right oil trough are respectively provided on the left and right inner walls of the intermediate lower box body between the shaft mounting stiffener and the middle and rear partition wall. The left oil passage hole and the right oil passage hole are respectively located at the bottom of the front end of the left oil trough and the right oil trough.

[0016] Inside the housing below the left and right oil sumps, there are left and right oil temperature sensing channels respectively. The left oil temperature sensing channel is connected to the outside of the housing and the left bearing position at the rear end of the first and second gears. The right oil temperature sensing channel is connected to the outside of the housing and the right bearing position at the rear end of the first and second gears. At the outer ends of the left and right oil temperature sensing channels, there are oil temperature sensors for detecting the temperature. Beneficial effects

[0017] 1. It greatly increases the interception area of ​​splashed lubricating oil at the rear left bearing position and the rear right bearing position of first and second gear, so that the rear left bearing position and the rear right bearing position of first and second gear can receive several times more lubricating oil than before, thereby ensuring that the rear left bearing position and the rear right bearing position of first and second gear can receive sufficient lubricating oil.

[0018] 2. The structure is simple and easy to set up. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the internal structure of the lower intermediate housing of the gearbox in Embodiment 1;

[0020] Figure 2 This is a partial structural diagram of the lower middle box in Embodiment 2;

[0021] Figure 3 This is a partial structural diagram of the lower middle housing in Embodiment 2, showing the location of the oil temperature sensor.

[0022] In the diagram: 100, lower middle housing; 110, mounting rib plate; 120, front middle partition; 130, middle and rear partition; 1, left bearing position at the rear end of first and second gears; 101, left oil passage hole; 102, left oil baffle rib plate; 103, left oil guide groove; 104, left oil accumulation groove; 105, left oil temperature sensing channel; 2, right bearing position at the rear end of first and second gears; 201, right oil passage hole; 202, right oil baffle rib plate; 203, right oil guide groove; 204, right oil accumulation groove; 205, right oil temperature sensing channel; 3, oil temperature sensor; 4, third gear driven gear. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings: Example 1

[0024] like Figure 1As shown, a lubrication structure for mounting bearings in the middle lower housing of a mining truck is improved in that: a left oil passage hole 101 and a right oil passage hole 201 with front and rear through mounting ribs 110 are provided on the rear walls of the left bearing position 1 and the right bearing position 2 at the rear ends of the first and second gears; and a left oil baffle rib 102 and a right oil baffle rib 102 protruding into the internal space of the housing are respectively provided on the left and right inner walls of the middle lower housing 100 above the left bearing position 1 and the right bearing position 2 at the rear ends of the first and second gears. The rib plate 202, the left oil baffle rib plate 102, and the right oil baffle rib plate 202 form a left oil guide groove 103 and a right oil guide groove 203 with the inner wall of the middle lower housing 100, respectively. The left oil guide groove 103 and the right oil guide groove 203 are connected to the left oil passage hole 101 and the right oil passage hole 201, respectively, so that the lubricating oil splashed onto the inner walls of the left and right sides of the middle upper housing can flow along the left oil guide groove 103 and the right oil guide groove 203 to the left oil passage hole 101 and the right oil passage hole 201. In this way, the interception area of ​​the splashed lubricating oil agitated by the third gear driven gear 4 at the rear left bearing position 1 and the rear right bearing position 2 of the first and second gears is greatly increased, so that the rear left bearing position 1 and the rear right bearing position 2 of the first and second gears receive several times more lubricating oil than before, thereby ensuring that the rear left bearing and the rear right bearing of the first and second gears receive sufficient lubricating oil.

[0025] The left oil baffle plate 102 and the right oil baffle plate 202 extend from the left and right ends of the mounting plate 110 to the left and right ends of the front central partition wall 120, respectively.

[0026] Furthermore, horizontal left oil collection grooves 104 and right oil collection grooves 204 are respectively provided on the left and right inner walls of the intermediate lower housing between the shaft mounting stiffener and the middle and rear partition wall 130. The left oil passage hole 101 and right oil passage hole 201 are located at the bottom of the front end of the left oil collection groove 104 and the right oil collection groove 204, respectively. In this way, the lubricating oil on the left and right inner walls of the intermediate lower housing between the shaft mounting stiffener and the middle and rear partition wall 130 can be collected and transported to the left bearing position 1 and the right bearing position 2 at the rear end of the first and second gears. Example 2

[0027] like Figure 2 , 3 As shown, a left oil temperature sensing channel 105 and a right oil temperature sensing channel 205 are respectively provided in the housing under the left oil sump 104 and the right oil sump 204. The left oil temperature sensing channel 105 is connected to the outside of the housing and to the left bearing position 1 at the rear end of the first and second gears. The right oil temperature sensing channel 205 is connected to the outside of the housing and to the right bearing position 2 at the rear end of the first and second gears. Oil temperature sensors 3 for detecting temperature are respectively provided at the outer ends of the left oil temperature sensing channel 105 and the right oil temperature sensing channel 205.

[0028] The above embodiments are only used to describe the present invention more clearly, and should not be regarded as limiting the scope of protection covered by the present invention. Any equivalent modifications should be regarded as falling within the scope of protection covered by the present invention.

Claims

1. A lubrication structure for mounting bearings in the lower intermediate housing of a mining truck, characterized in that: On the rear walls of the left bearing position (1) and the right bearing position (2) at the rear end of first and second gear, there are left oil passage holes (101) and right oil passage holes (201) for the front and rear through mounting ribs (110). On the left and right inner walls of the lower housing (100) above the left bearing position (1) and the right bearing position (2) at the rear end of first and second gear, there are left oil baffles (102) and right oil baffles (202) that protrude into the internal space of the housing, respectively. The right oil baffle plate (202) forms a left oil guide groove (103) and a right oil guide groove (203) between the inner wall of the middle lower box (100) and the right oil guide groove (203). The left oil guide groove (103) and the right oil guide groove (203) are connected to the left oil passage hole (101) and the right oil passage hole (201) respectively, so that the lubricating oil splashed onto the inner walls of the left and right sides of the middle upper box can flow along the left oil guide groove (103) and the right oil guide groove (203) to the left oil passage hole (101) and the right oil passage hole (201).

2. The lubrication structure for mounting bearings in the lower intermediate housing of a mining truck according to claim 1, characterized in that: The left oil baffle plate (102) and the right oil baffle plate (202) extend from the left and right ends of the mounting plate (110) to the left and right ends of the front central partition wall (120), respectively.

3. The lubrication structure for mounting bearings in the lower intermediate housing of a mining truck according to claim 2, characterized in that: A horizontal left oil trough (104) and a right oil trough (204) are respectively provided on the left and right inner walls of the intermediate lower box between the shaft mounting stiffener and the middle and rear partition wall (130). The left oil passage hole (101) and the right oil passage hole (201) are respectively located at the bottom of the front end of the left oil trough (104) and the right oil trough (204).

4. The lubrication structure for mounting bearings in the lower intermediate housing of a mining truck according to claim 3, characterized in that: Inside the housing under the left oil sump (104) and the right oil sump (204), there are left oil temperature sensing channels (105) and right oil temperature sensing channels (205), respectively. The left oil temperature sensing channel (105) is connected to the outside of the housing and to the left bearing position (1) at the rear end of the first and second gears. The right oil temperature sensing channel (205) is connected to the outside of the housing and to the right bearing position (2) at the rear end of the first and second gears. At the outer ends of the left oil temperature sensing channel (105) and the right oil temperature sensing channel (205), there are oil temperature sensors (3) for detecting the temperature.

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