A transmission lubricating oil amount measuring device

Abstract

The utility model belongs to the field of measuring device, concretely relates to a transmission lubricating oil quantity measuring device. The measuring device includes the measuring conduit and the float, the bottom end of measuring conduit is provided with overflow hole, the top end is provided with the through -hole that communicates with overflow hole along its length direction, the area of overflow hole is less than the area of through -hole, the float is compatible with the through -hole, the bottom end of float is inserted into the through -hole from the top end of measuring conduit, and abuts in the bottom end inboard of measuring conduit in initial state, the float can slide along the length direction of measuring conduit through the buoyancy of lubricating oil in measurement, the outer wall of float is provided with a plurality of different marks along its length direction, and the position of a plurality of marks along the length direction of float is set according to the oiling capacity of different types of measured transmission respectively. The utility model can be set at the lubricating oil filling mouth when lubricating oil is filled, and the float is driven to move up and down through the buoyancy of lubricating oil, realizes the real -time measurement in the filling process.

Description

Technical Field

[0001] This utility model relates to a measuring device, specifically a device for measuring the amount of lubricating oil in a transmission. Background Technology

[0002] Currently, heavy-duty trucks primarily use manual or automated manual transmissions (AMT), neither of which typically comes equipped with a dipstick. When a new truck rolls off the production line, OEMs usually add sufficient lubricating oil to the transmission using one of two methods: ① Measure the required oil level in advance using a measuring cup or other measuring device, according to the specific transmission model; ② When adding oil, open the oil level sight glass on the side of the transmission and observe the oil level during the process. The oil level is considered adequate when it is level with the lower edge of the sight glass. These two methods are also commonly used when changing the transmission oil after service.

[0003] While measuring oil level with a measuring cup is accurate, the process is cumbersome. When multiple transmissions need refilling, each one must be measured individually, resulting in low refilling efficiency. Observing the oil level through the sight glass has the following drawbacks: ① The sight glass is usually located on the side of the transmission. Due to the small gap between the transmission side and the chassis, it's difficult for operators to observe the level accurately at close range during refilling, whether it's a new car coming off the assembly line or after-sales maintenance. ② Refilling must be stopped when using the sight glass, or one person must refill while another observes, leading to low efficiency. ③ Because close observation is impossible, the oil level cannot be accurately monitored during refilling. If not observed promptly, lubricating oil can easily overflow from the sight glass. Therefore, an oil catcher must be installed at the bottom of the transmission to prevent overflowing lubricating oil from reaching the ground. ④ Lubricating oil overflowing from the sight glass causes drips on the exterior of the transmission, requiring further cleaning of the transmission surface.

[0004] Chinese patent CN115046605A discloses a structure and method for measuring lubricating oil in an automatic transmission (AT). The measuring structure includes a measuring device and a vernier clamp. The measuring device includes a dipstick and a protective tube. The dipstick is disposed inside the protective tube, and a through hole is provided on the wall of the protective tube. The measuring device is disposed in the mounting hole of the transmission housing via the vernier clamp, and the vernier clamp is mounted on the transmission housing via a connecting component.

[0005] However, this measuring structure can only measure after the transmission oil has been added, and cannot measure in real time during the adding process, which results in the inability to accurately measure the amount of oil added. Utility Model Content

[0006] The purpose of this invention is to solve the technical problem that existing measuring structures can only measure after the transmission lubricating oil has been added, and cannot measure in real time during the adding process, thus making it impossible to accurately measure the amount of lubricating oil added. Therefore, this invention provides a transmission lubricating oil quantity measuring device.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A transmission lubricating oil level measuring device, characterized in that:

[0009] Includes measuring guide tubes and floats;

[0010] The measuring conduit has an overflow hole at its bottom end and a through hole connected to the overflow hole along its length at its top end. The area of ​​the overflow hole is smaller than the area of ​​the through hole.

[0011] The float is adapted to the through hole; the bottom end of the float is inserted into the through hole from the top end of the measuring guide tube, and initially abuts against the inner side of the bottom end of the measuring guide tube; during measurement, the float can slide along the length of the measuring guide tube by the buoyancy of the lubricating oil;

[0012] The outer wall of the float is provided with several different marks along its length. The positions of these marks along the length of the float are set according to the lubrication amount of different types of transmissions to be measured. When the mark corresponding to the transmission type is flush with the top of the measuring guide tube, it is considered that the lubrication amount meets the requirements of that type of transmission, thereby realizing the measurement of lubricating oil quantity.

[0013] Furthermore, a magnet is provided at the bottom end of the measuring conduit, which is used to attract iron filings in the lubricating oil.

[0014] Furthermore, the measuring conduit has a cylindrical structure;

[0015] An annular mounting plate is provided on the outer circumference of the bottom end of the measuring conduit, and the radial cross-section of the magnet is circular; the outer diameter of the mounting plate is larger than the outer diameter of the magnet and smaller than the diameter of the lubricating oil filling port on the transmission; the inner diameter of the magnet is adapted to the outer diameter of the measuring conduit.

[0016] The magnet is mounted on the measuring conduit, with its lower side abutting against the mounting plate.

[0017] Furthermore, the float is a hollow cylindrical structure with a ball-shaped end at its bottom; both the through hole and the flow hole are circular holes.

[0018] The diameter of the ball end of the float is larger than the diameter of the flow hole and is compatible with the diameter of the through hole; the diameter of the cylindrical section of the float is smaller than the diameter of the through hole.

[0019] The length of the float is greater than the depth of the through hole, and its top end is located outside the top end of the measuring guide tube.

[0020] Furthermore, the measuring conduit is made of metal, and the float is made of plastic.

[0021] Furthermore, the mark is a line with text.

[0022] The beneficial effects of this utility model are:

[0023] 1. This utility model can be set at the lubricating oil filling port during lubricating oil filling. The float moves up and down by the buoyancy of the lubricating oil, realizing real-time measurement during the filling process and improving the accuracy of lubricating oil filling measurement. Furthermore, since the measurement is performed in real time during lubricating oil filling, there is no need to prepare a measuring cup in advance or add or reduce the amount after filling, which can improve the lubricating oil filling rate.

[0024] 2. This utility model can avoid the leakage of lubricating oil and the corresponding cleaning work caused by opening the oil level observation hole.

[0025] 3. This utility model uses a magnet to attract iron filings mixed in the lubricating oil, thereby improving the cleanliness of the lubricating oil, effectively protecting the transmission, and extending the transmission's lifespan. Attached Figure Description

[0026] Figure 1 This is a two-dimensional sectional view of an embodiment of the present utility model;

[0027] Figure 2 This is a three-dimensional sectional view of an embodiment of the present invention.

[0028] In the diagram: 1-magnet, 2-measuring guide tube, 3-float. Detailed Implementation

[0029] To make the objectives, advantages, and features of this utility model clearer, the following detailed description of a transmission lubricating oil quantity measuring device proposed by this utility model, in conjunction with the accompanying drawings and specific embodiments, will further clarify these points. The advantages and features of this utility model will become clearer according to the following specific embodiments.

[0030] See Figure 1 and Figure 2 This embodiment provides a transmission lubricating oil quantity measuring device, which mainly includes a measuring conduit 2 and a float 3.

[0031] The measuring conduit 2 is a hollow cylindrical metal tube. A circular flow hole is provided at the bottom end of the measuring conduit 2, and a circular through hole connected to the flow hole is provided at the top end along its length. The diameter of the flow hole is smaller than the diameter of the through hole.

[0032] Considering that the lubricating oil that has not reached the end of its service life may be added back into the transmission during after-sales maintenance, an annular magnet 1 is installed on the outer periphery of the bottom end of the measuring conduit 2. During the filling process, the annular magnet 1 can attract iron filings in the oil, thereby improving the cleanliness of the transmission and extending its service life.

[0033] Specifically, an annular mounting plate is provided on the outer circumference of the bottom end of the measuring conduit 2. The lower side of the magnet 1 abuts against the mounting plate. The outer diameter of the mounting plate is larger than the outer diameter of the magnet 1. The inner diameter of the magnet 1 is matched with the outer diameter of the measuring conduit 2, thereby ensuring that the magnet 1 can be fitted onto the outside of the measuring conduit 2 and will not fall off.

[0034] The float 3 is a hollow cylindrical structure with a ball-shaped end at its bottom. During installation, the ball-shaped end of the float 3 is inserted into the through hole through the top of the measuring guide tube 2, abutting against the inner side of the bottom end of the measuring guide tube 2; the top of the float 3 is outside the top of the measuring guide tube 2. The diameter of the ball-shaped end of the float 3 is larger than the diameter of the flow hole and matches the diameter of the through hole; the diameter of the cylindrical section of the float 3 is smaller than the diameter of the through hole, thus ensuring that the float 3 will not fall off the bottom flow hole of the measuring guide tube 2 during use, and can move freely up and down along the axis of the measuring guide tube 2 under the buoyancy of the lubricating oil.

[0035] The outer wall of the float 3 is provided with several different markings along its axial direction. In this embodiment, the aforementioned markings are specifically marking lines with text descriptions, which can intuitively reflect the type of transmission. Of course, this arrangement is only a preferred design of this utility model, and those skilled in the art can make specific designs according to specific circumstances.

[0036] Several marks are set at positions along the axial direction of float 3 according to the lubrication amount of different types of transmissions to be measured. When the mark corresponding to the transmission type is flush with the top of the measuring guide tube 2, it is considered that the lubrication amount meets the requirements of that type of transmission, thereby realizing the measurement of lubricating oil quantity.

[0037] The specific work process is as follows:

[0038] 1. Open the lubricating oil filler hole on the transmission and insert the filler funnel into the lubricating oil filler hole;

[0039] 2. Place the ring magnet 1 on the measuring guide tube 2, and insert the ball end of the float 3 into the measuring guide tube 2. The three together form a transmission lubricating oil measuring device. Insert the transmission lubricating oil measuring device into the bottom of the transmission from the funnel. Since the bottom of the transmission, which is directly opposite the lubricating oil filling port, is relatively flat, and the bottom of the transmission lubricating oil measuring device is also flat, it can be ensured that the transmission lubricating oil measuring device is basically vertical after being inserted into the transmission from the funnel. In addition, under normal circumstances, the guide tube at the bottom of the filling funnel is relatively long, which can also ensure that the transmission lubricating oil measuring device is in a vertical position when working.

[0040] 3. Add transmission fluid to the funnel. As more fluid is added, float 3 will rise in the measuring tube 2. Magnet 1 and measuring tube 2 will not rise due to gravity. As float 3 rises, when the mark corresponding to the transmission type is flush with the top of the measuring tube 2, the fluid level is considered to have met the requirements for that type of transmission, and the measurement is complete.

Claims

1. A transmission lubricating oil quantity measuring device, characterized in that: Includes a measuring conduit (2) and a float (3); The measuring conduit (2) has an overflow hole at its bottom end and a through hole connected to the overflow hole along its length at its top end. The area of ​​the overflow hole is smaller than the area of ​​the through hole. The float (3) is adapted to the through hole, and its bottom end is inserted into the through hole from the top end of the measuring guide tube (2), and in the initial state it abuts against the inner side of the bottom end of the measuring guide tube (2); the float (3) slides along the length direction of the measuring guide tube (2) by the buoyancy of the lubricating oil during measurement; The outer wall of the float (3) is provided with multiple different marks along its length. The positions of the multiple marks along the length of the float (3) are set according to the lubrication amount of different types of transmissions to be measured. When the mark corresponding to the transmission type is flush with the top of the measuring guide tube (2), it is considered that the lubrication amount meets the lubrication amount requirement of that type of transmission, thereby realizing the measurement of lubricating oil quantity.

2. The transmission lubricating oil quantity measuring device according to claim 1, characterized in that: A magnet (1) is provided at the bottom end of the measuring conduit (2), and the magnet (1) is used to adsorb iron filings in the lubricating oil.

3. The transmission lubricating oil quantity measuring device according to claim 2, characterized in that: The measuring conduit (2) has a cylindrical structure; An annular mounting plate is provided on the outer circumferential surface of the bottom end of the measuring conduit (2), and the radial cross-section of the magnet (1) is circular; the outer diameter of the mounting plate is larger than the outer diameter of the magnet (1) and smaller than the diameter of the lubricating oil filling port on the transmission; the inner diameter of the magnet (1) is adapted to the outer diameter of the measuring conduit (2); The magnet (1) is mounted on the measuring guide tube (2), with its lower side abutting against the mounting plate.

4. A transmission lubricating oil quantity measuring device according to any one of claims 1-3, characterized in that: The float (3) is a hollow cylindrical structure with a ball-shaped end at its bottom; the through hole and the flow hole are both circular holes. The diameter of the ball end of the float (3) is larger than the diameter of the flow hole and is adapted to the diameter of the through hole; the diameter of the cylindrical section of the float (3) is smaller than the diameter of the through hole. The length of the float (3) is greater than the depth of the through hole, and its top end is located outside the top end of the measuring guide tube (2).

5. The transmission lubricating oil quantity measuring device according to claim 1, characterized in that: The measuring conduit (2) is made of metal, and the float (3) is made of plastic.

6. A transmission lubricating oil quantity measuring device according to claim 1 or 5, characterized in that: The markings are marking lines with text.

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