Lubricating grease pump anti-vacuum box assembly for mine heavy truck

Abstract

This utility model relates to a vacuum-resistant grease pump housing assembly for heavy-duty mining vehicles, comprising a base, housing, top cover, grease overflow port, grease inlet, breather filter, and grease pump. Its key feature is the inclusion of an annular grease guide panel, a vacuum-resistant pressure plate, a pressure spring, a lever-type grease level indicator, a low grease level alarm switch, and a low grease level alarm system. The annular grease guide panel is installed between the base and the housing; the vacuum-resistant pressure plate is slidably connected to the inner wall of the housing; the lower end of the lever-type grease level indicator extends into the housing and connects to the vacuum-resistant pressure plate, while the upper end extends out of the grease tank top cover; the low grease level alarm system includes a buzzer, an alarm light, and a power supply. By installing the annular guide panel, the vacuum-resistant pressure plate, and the pressure spring inside the grease tank, and also providing a low grease level alarm system, the occurrence of vacuuming in the grease pump is effectively prevented.

Description

Technical Field

[0001] This utility model belongs to the technical field of mining heavy-duty trucks, and in particular relates to a vacuum-proof housing assembly for a grease pump in a mining heavy-duty truck. Background Technology

[0002] In the metallurgical and mining sector, heavy-duty mining dump trucks serve as core transportation equipment. Their automatic lubrication systems are crucial for the continuous lubrication of ball joint bearings, directly impacting the reliability and lifespan of key vehicle components. However, current lubrication systems face two major technical challenges: First, grease has poor fluidity at low temperatures or high viscosity, making it difficult to actively flow to the grease pump inlet. This is especially problematic in frigid northern environments where grease viscosity increases significantly, leading to a surge in pump suction resistance. Second, traditional plug-in gauges for grease level detection are cumbersome and prone to large reading errors, easily resulting in untimely grease replenishment and insufficient lubrication in the grease pump housing. These issues can easily trigger grease pump vacuum failures. Once this occurs, it not only accelerates the wear of internal seals and shortens equipment lifespan but also leads to insufficient lubrication of the ball joint bearings, causing abnormal wear or even failure. Repair costs due to vacuum failures account for a significant proportion of annual vehicle maintenance expenses. Furthermore, frequent downtime for maintenance drastically reduces vehicle operating efficiency, increases operator workload, and severely impacts the continuity and economic efficiency of mine production. Therefore, there is an urgent need to develop a high-efficiency anti-vacuum grease pump housing technology to solve the existing pain points in the industry. Utility Model Content

[0003] This utility model addresses the problems of easy vacuuming and difficulty in detecting grease levels in heavy-duty mining dump truck grease pumps by providing a vacuum-proof housing assembly for heavy-duty mining truck grease pumps.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] This utility model discloses a vacuum-resistant grease pump housing assembly for heavy-duty mining trucks, comprising a base, a grease storage tank, and a grease tank cover. A grease overflow port is located on the upper side of the grease storage tank, and a grease filling port is located on the lower side of the other side. A breather filter and a grease pump are located on the top of the grease storage tank, with the breather filter communicating with the upper part of the grease storage tank. The assembly is characterized by further including an annular grease guide panel, a vacuum-resistant pressure plate, a pressure spring, a pressure rod-type grease level indicator, a low grease level alarm switch, and a low grease level alarm system. The annular grease guide panel is a "V"-shaped annular grease guide panel installed between the base and the grease storage tank. The grease pump is located within the grease tank. The upper part of the grease tank cover has a grease inlet pipe at the oil inlet end of the grease pump. The oil inlet of the grease inlet pipe extends to the upper part of the "V"-shaped annular grease guide panel. The anti-vacuum pressure plate is an annular pressure plate with a central hole. Its central hole is sealed and fitted on the grease inlet pipe, and its outer edge is slidably connected to the inner wall of the grease tank. The low grease level alarm switch and the pressure rod type grease level indicator are set on the upper part of the grease tank cover. The pressure rod type grease level indicator is an inverted "L"-shaped grease level indicator composed of a long rod and a short rod. The lower end of the long rod extends into the grease storage tank and connects to the annular pressure plate with the central hole. The upper end of the short rod extends out of the grease tank cover and is placed above the low grease level alarm switch, and is slidably connected to the grease tank cover.

[0006] The low grease level alarm system includes a buzzer, an alarm light, and a power supply. The buzzer, alarm light, and power supply are installed on the control box, and the low grease level alarm switch is electrically connected to the buzzer, alarm light, and power supply.

[0007] As a further description of the above technical solution: a wide and long screen grease level indicator is provided in the grease storage tank.

[0008] As a further description of the above technical solution: the "V"-shaped annular grease guide panel is at a 45° to 60° angle to the base.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This invention utilizes an annular flow guide panel, an anti-vacuum pressure plate, and a pressure spring installed inside the grease tank. By employing external force and the mechanical guiding effect of the inclined plane, it forces the grease to flow in a specific direction, directing it towards the grease pump inlet. This prevents poor grease flow and directionality, which could lead to vacuuming in the grease pump. Furthermore, it employs a pressure rod-type grease level indicator and a wide, long screen grease level indicator for easy observation, and a triple-safety system with a low grease level alarm switch further prevents vacuuming. This reduces equipment failure rates and labor intensity, saves on spare parts costs, and improves vehicle operating efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] like Figure 1 As shown, this utility model discloses a vacuum-resistant grease pump assembly for heavy-duty mining vehicles, comprising a base 1, a grease storage tank 2, and a grease tank cover 7. A grease overflow port 4 is located on the upper side of the grease storage tank 2, and a grease inlet 16 is located on the lower side of the other side. A breather filter 14 and a grease pump 13 are located on the top of the grease storage tank 2, with the breather filter 14 communicating with the upper part of the grease storage tank 2. The assembly is characterized by further including an annular grease guide panel, a vacuum-resistant pressure plate 5, a pressure spring 6, a pressure rod-type grease level indicator 9, a low grease level alarm switch 8, and a low grease level alarm system. The annular grease guide panel is a "V"-shaped annular grease guide panel 3, installed between the base 1 and the grease storage tank 2, with the "V"-shaped annular grease guide panel 3 at a 45° angle to the base 1. ~60° angle; the grease pump 13 is located on the upper part of the grease tank cover 7, and a grease inlet pipe 17 is provided at the oil inlet end of the grease pump 13. The oil inlet of the grease inlet pipe 17 extends to the upper part of the "V"-shaped annular grease guide panel 3; the anti-vacuum pressure plate 5 is an annular pressure plate with a central hole, and its central hole is sealed and fitted on the grease inlet pipe 17. Its outer edge is slidably connected to the inner wall of the grease tank 2; the low grease level alarm switch 8 and the pressure rod type grease level indicator 9 are located on the upper part of the grease tank cover 7. The pressure rod type grease level indicator 9 is an inverted "L"-shaped grease level indicator composed of a long rod and a short rod. The lower end of the long rod extends into the grease storage tank 2 and is connected to the annular pressure plate with a central hole. The upper end of the short rod extends out of the grease tank cover 7 and is placed on the upper part of the low grease level alarm switch 8, and is slidably connected to the grease tank cover 7;

[0014] The low grease level alarm system includes a buzzer 11, an alarm light 10, and a power supply 12. The buzzer 11, alarm light 10, and power supply 12 are mounted on a control box. The low grease level alarm switch 8 is electrically connected to the buzzer 11, alarm light 10, and power supply 12.

[0015] The grease reservoir is equipped with a wide, elongated grease level indicator 15. When the grease level indicator 9 indicates that the reservoir is full, adding grease stops. If adding continues, grease 18 will overflow from the grease overflow port 4 to prevent damage to the seal of the anti-vacuum pressure plate 5. During the adding process, the position of the highest point of the grease 18 in the grease reservoir 2 can also be observed using the wide, elongated grease level indicator 15.

[0016] The working principle of this utility model is as follows:

[0017] Grease 18 is injected into the grease storage tank 2 through the grease filling port 16. The pressure of the grease 18 increases, overcoming the spring force of the pressure spring 6, and lifting the anti-vacuum pressure plate 5 and the pressure rod type grease level indicator 9, thus increasing the volume of grease 18. Air in the grease storage tank 2 is discharged through the breather filter 14. When the pressure rod type grease level indicator 9 indicates that it is full, adding grease stops. If adding grease continues, grease 18 will overflow from the grease overflow port 4 to prevent damage to the seal of the anti-vacuum pressure plate 5. During the adding process, the position of the highest point of grease 18 in the grease storage tank 2 can be observed with reference to the wide and long screen grease level indicator 15.

[0018] When the grease pump 13 operates, it pumps out the grease 18, reducing the volume of the grease 18 in the grease storage tank 2 and lowering the pressure. The supporting force of the grease 18 on the anti-vacuum pressure plate 5 is less than the spring force of the pressure spring 6. At this time, the anti-vacuum pressure plate 5 moves downward under the action of the spring force of the pressure spring 6. Air enters the grease storage tank 2 from the breathing filter 14, and the grease 18 is subjected to continuous pressure. Under the action of pressure and the guiding effect of the "V"-shaped annular grease guide panel 3, the grease 18 is forced to flow in a specific direction, flowing along the "V"-shaped annular grease guide panel 3 to the grease inlet pipe 17, and continuously filling the space through the grease pump inlet, effectively preventing the occurrence of vacuum phenomenon.

[0019] As grease 18 continues to be consumed, the position of the highest point of grease 18 in the grease reservoir 2 can be observed using the wide-screen grease level indicator 15, while simultaneously observing the scale of the lever-type grease level indicator 9 to confirm whether grease 18 in the grease reservoir 2 needs to be added. When the highest point of grease 18 in the grease reservoir 2 is at the set lower limit, the end of the lever-type grease level indicator 9 triggers the low grease level alarm switch 8, activating the circuits of power supply 12, buzzer 11, and alarm light 10, prompting the driver to add grease 18. This three-in-one method effectively prevents vacuuming.

Claims

1. A vacuum-resistant grease pump housing assembly for a heavy-duty mining vehicle, comprising a base, a grease storage tank, and a grease tank cover; a grease overflow port is provided on the upper side of the grease storage tank, and a grease filling port is provided on the lower side of the other side of the grease storage tank; a breather filter and a grease pump are provided on the top of the grease storage tank, the breather filter communicating with the upper part of the grease storage tank; characterized in that... It also includes a ring-shaped grease guide panel, an anti-vacuum pressure plate, a pressure spring, a lever-type grease level indicator, a low grease level alarm switch, and a low grease level alarm system. The ring-shaped grease guide panel is a "V"-shaped ring-shaped grease guide panel, installed between the base and the grease storage tank. The grease pump is located on the upper part of the grease tank cover, and a grease inlet pipe is provided at the oil inlet end of the grease pump. The oil inlet of the grease inlet pipe extends to the upper part of the "V"-shaped ring-shaped grease guide panel; the anti-vacuum pressure plate is... An annular pressure plate with a central hole is fitted with a sealing sleeve on the grease inlet pipe, and its outer edge is slidably connected to the inner wall of the grease tank. The low grease level alarm switch and the lever-type grease level indicator are located on the upper part of the grease tank cover. The lever-type grease level indicator is an inverted "L"-shaped grease level indicator composed of a long rod and a short rod. The lower end of the long rod extends into the grease storage tank and connects to the annular pressure plate with the central hole. The upper end of the short rod extends out of the grease tank cover and is placed above the low grease level alarm switch, and is slidably connected to the grease tank cover. The low grease level alarm system includes a buzzer, an alarm light, and a power supply. The buzzer, alarm light, and power supply are installed on the control box, and the low grease level alarm switch is electrically connected to the buzzer, alarm light, and power supply.

2. The anti-vacuum housing assembly for the heavy-duty grease pump in mining vehicles according to claim 1, characterized in that: The grease storage tank is equipped with a wide and long screen grease level indicator.

3. The anti-vacuum housing assembly for the heavy-duty grease pump in mining vehicles according to claim 1, characterized in that: The "V"-shaped annular grease guide panel is at a 45° to 60° angle to the base.

Images