An automobile hydraulic oil tank oil level alarm device

Abstract

The utility model discloses a kind of automobile hydraulic oil tank oil level alarm device, including the support frame being arranged at the top of hydraulic oil tank, displacement switch is equipped on support frame, displacement switch is connected with alarm circuit, and displacement switch is matched with inductive plate, inductive plate is fixed on vertical float pole upper end, vertical float pole lower end passes through the top plate of hydraulic oil tank and extends to the inside of hydraulic oil tank to be connected with float ball, float ball is placed on the oil surface of hydraulic oil, compared with prior art, the beneficial effects of the utility model are: by additionally adding the liquid level anti-shaking mechanism consisting of cylinder and baffle mechanism, effectively isolate the liquid surface shaking interference in the hydraulic oil tank when automobile travels, make float ball only with actual oil level change steady lifting, significantly improve the accuracy of oil level monitoring, avoid false alarm phenomenon caused by liquid surface shaking, ensure that low oil level can timely, reliably trigger alarm and control actuating mechanism, to guarantee the safe and stable operation of automobile hydraulic system.

Description

Technical Field

[0001] This utility model relates to the field of oil level monitoring technology, specifically to an oil level alarm device for automotive hydraulic oil tanks. Background Technology

[0002] CN211116935U A hydraulic oil level automatic detection and shutdown device includes a hydraulic oil tank, a support frame on the top of the hydraulic oil tank, a displacement switch on the support frame, the displacement switch being connected to a sensing plate, the sensing plate being fixed to the upper end of a vertical float, the lower end of the vertical float passing through the top plate of the hydraulic oil tank and extending downward into the hydraulic oil tank to connect with a float ball, the float ball being placed on the surface of the hydraulic oil.

[0003] By adopting the above scheme, the displacement switch can be easily activated after the float and float rod cause the sensing plate to descend with the drop in liquid level, thereby issuing an audible and visual alarm for low liquid level and stopping the corresponding actuator to ensure equipment safety.

[0004] However, when this hydraulic oil tank is installed on a vehicle, the large surface area of ​​the hydraulic oil inside causes significant sloshing within the tank during vehicle movement. This results in the float rising and falling dramatically within the tank. Even if the actual oil level has not reached the warning value, the float may trigger the displacement switch due to momentary settling, causing a false alarm. False alarms not only interfere with the driver's judgment but may also lead to unnecessary shutdowns of the actuators, affecting the normal operation of the vehicle. Therefore, there is an urgent need for an oil level alarm device that can adapt to the dynamic operating conditions of a vehicle and reduce interference from fluid surface sloshing. Utility Model Content

[0005] 1. The technical problems to be solved.

[0006] This invention aims to solve the problem that existing hydraulic oil tank level alarm devices, when applied to automobiles, suffer from significant hydraulic oil fluctuations due to road bumps, acceleration, and deceleration during vehicle operation. This causes the float to rise and fall frequently with the fluctuating oil level, potentially triggering a displacement switch and causing false alarms even when the actual oil level is below the warning threshold.

[0007] 2. Technical solution.

[0008] To solve the above problems, this utility model provides the following technical solution: an automotive hydraulic oil tank level alarm device, including a support frame installed on the top of the hydraulic oil tank, a displacement switch installed on the support frame, the displacement switch being connected to an alarm circuit, and the displacement switch being mated with a sensing plate, the sensing plate being fixed to the upper end of a vertical float, the lower end of the vertical float passing through the top plate of the hydraulic oil tank and extending downward into the hydraulic oil tank to be connected to a float ball, the float ball being placed on the surface of the hydraulic oil;

[0009] The support frame is equipped with a liquid level anti-sloshing mechanism, which includes a cylinder fixedly connected to the support frame. The lower end of the vertical float is vertically movably disposed in the cylinder. The lower end of the cylinder is open, and the lower end of the cylinder penetrates the bottom plate of the hydraulic oil tank and is inserted below the hydraulic oil level. A baffle mechanism is movably disposed below the cylinder, and the baffle mechanism blocks the lower end of the cylinder under the buoyancy of the hydraulic oil.

[0010] 3. Beneficial effects.

[0011] Compared with the prior art, the beneficial effects of this utility model are: by adding a liquid surface anti-sloshing mechanism composed of a cylinder and a baffle mechanism, the interference of liquid surface sloshing in the hydraulic oil tank during vehicle operation is effectively isolated, so that the float rises and falls smoothly only with the actual oil level, which significantly improves the accuracy of oil level monitoring, avoids false alarms caused by liquid surface sloshing, and ensures that the alarm can be triggered in a timely and reliable manner and the actuator can be controlled when the oil level is low, thereby ensuring the safe and stable operation of the vehicle hydraulic system. Attached Figure Description

[0012] Figure 1 This is a cross-sectional structural diagram of the present invention during installation.

[0013] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 3 This is a schematic diagram of the circuit structure of this utility model.

[0015] Figure 4 This is the second embodiment of the present utility baffle mechanism. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4This utility model discloses an automotive hydraulic oil tank level alarm device, including a support frame installed on the top of the hydraulic oil tank. A displacement switch 104 is mounted on the support frame, connected to an alarm circuit. The displacement switch 104 is also connected to a sensing plate 103. The sensing plate 103 is fixed to the upper end of a vertical float 102. The lower end of the vertical float 102 extends downwards through the top plate of the hydraulic oil tank into the tank and connects to a float 101. The float 101 is positioned on the hydraulic oil surface. When the float 101 descends from the normal oil level to an abnormal oil level, the displacement switch 104 closes, activating the alarm circuit and triggering an alarm. This is an existing hydraulic oil tank level alarm device; for details, please refer to CN211116935U, "Automatic Hydraulic Oil Level Detection and Shutdown Device," which will not be described in detail here.

[0018] It is understandable that the movement of a car can cause significant fluctuations in the liquid level, potentially causing the level of the float 101 to drop suddenly to an abnormal level, which could trigger a false alarm. Therefore, this invention makes the following innovations based on existing technology:

[0019] The support frame is fixed with a liquid level anti-sloshing mechanism 200, which includes a cylinder 201 fixedly connected to the support frame. The lower end of the vertical float 102 is vertically movably disposed in the cylinder 201. Specifically, the cylinder 201 is vertically disposed in the oil tank and is coaxially disposed with the vertical float 101. The lower end of the cylinder 201 is open, and the lower end of the cylinder 201 penetrates the bottom plate of the hydraulic oil tank and is inserted below the hydraulic oil level, so that the liquid level inside the cylinder 201 is flush with the overall liquid level in the oil tank. A baffle mechanism 202 is movably disposed below the cylinder 201. The baffle mechanism 202 is blocked at the lower end of the cylinder 201 under the buoyancy of the hydraulic oil.

[0020] With the above structure, when the liquid level in the tank sloshes, the float 101 is placed inside the cylinder 201, and the bottom of the cylinder 201 is blocked by the baffle mechanism 202, so that the sloshing amplitude of the liquid level inside the cylinder 201 is significantly smaller than that outside the cylinder 201, thereby improving the accuracy of monitoring.

[0021] The baffle mechanism 202 includes a baffle 202-1, which is vertically and movably installed at the lower end of the cylinder 201 via a sliding component. Under the action of buoyancy, the baffle 202-1 blocks the lower end of the cylinder 201. It can be understood that the baffle 202-1 does not need to completely block the lower end of the cylinder 201. Under the action of buoyancy of the hydraulic oil in the oil tank, the baffle 202-1 has a supporting effect on the hydraulic oil in the cylinder 201, so that when the oil tank shakes, the hydraulic oil in the cylinder 201 will not decrease suddenly, thereby avoiding large fluctuations of the float 101.

[0022] In some embodiments, the sliding assembly includes a guide ring 202-4, the side of which is fixedly connected to the inner wall of the cylinder 201 by a fixing rod 202-2. The guide ring 202-4 is slidably connected to a sliding rod 202-5, the upper end of which is fixedly fixed to a limit block 202-3, and the lower end of which is fixedly connected to the surface of the baffle 202-1.

[0023] The support frame includes a base plate 107, a side plate 106 fixed to the base plate 107, a top plate 105 fixed to the side plate 106, a displacement switch 104 installed on the bottom surface of the top plate 105, a vertical float 102 whose lower end passes through the base plate 107 and is slidably connected to the base plate 107, an upper end of a cylinder 201 fixedly connected to the bottom surface of the base plate 107, a sliding sleeve fixed to the surface of the base plate 107, and a vertical float 101 slidably connected to the sliding sleeve.

[0024] like Figure 3 As shown, the alarm circuit includes a relay coil. One end of the displacement switch is connected to one end of the relay coil. The other end of the relay coil is connected to one end of the buzzer, indicator light, and contactor coil. The other ends of the buzzer and indicator light are connected to the other end of the displacement switch through the normally open contact of the relay. The other end of the contactor coil is connected to the other end of the displacement switch through the normally closed contact of the relay. The contactor is connected to the motor circuit of the corresponding actuator.

[0025] like Figure 4 The second embodiment of the baffle mechanism 202 is shown, which includes a baffle 202-a. A shaft 202-b is fixed to the baffle 202-a. The shaft 202-b is rotatably connected to one side of the lower end of the cylinder 201. When the cylinder 201 is inserted below the hydraulic oil surface, the baffle 202-a rotates upward under the action of buoyancy and blocks the lower end of the cylinder 201.

[0026] In summary, this utility model provides an automotive hydraulic oil tank level alarm device that isolates the float 101 from most of the hydraulic oil in the tank using a cylindrical tube 201, forming a relatively independent small space. When the vehicle is moving, causing significant sloshing of the hydraulic oil in the tank, although the oil level outside the cylinder 201 fluctuates violently, the oil level inside the cylinder 201 is limited by the space, significantly reducing the amplitude of the sloshing. Simultaneously, the baffle mechanism 202 at the lower end of the cylinder 201 provides a certain lifting effect on the hydraulic oil inside the tube under the action of buoyancy, effectively delaying the sudden rise and fall of the oil level caused by external sloshing. This ensures that the float 101 rises and falls smoothly only with the actual oil level changes, avoiding false alarms caused by fluid surface sloshing.

[0027] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0028] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic oil tank level alarm device for automobiles, comprising a support frame mounted on the top of the hydraulic oil tank, a displacement switch mounted on the support frame, the displacement switch being connected to an alarm circuit and mated with a sensing plate, the sensing plate being fixed to the upper end of a vertical float, the lower end of the vertical float extending downward through the top plate of the hydraulic oil tank into the hydraulic oil tank and connected to a float ball, the float ball being positioned on the surface of the hydraulic oil, characterized in that: The support frame is fixed with a liquid level anti-sloshing mechanism, which includes a cylinder fixedly connected to the support frame. The lower end of the vertical float is vertically movably disposed in the cylinder. The lower end of the cylinder is open, and the lower end of the cylinder penetrates the bottom plate of the hydraulic oil tank and is inserted below the hydraulic oil level. A baffle mechanism is movably disposed below the cylinder, and the baffle mechanism blocks the lower end of the cylinder under the buoyancy of the hydraulic oil.

2. The automotive hydraulic oil tank level alarm device as described in claim 1, characterized in that: The baffle mechanism includes a baffle, which is vertically and movably mounted on the lower end of the cylinder via a sliding component.

3. The automotive hydraulic oil tank level alarm device as described in claim 2, characterized in that: The sliding assembly includes a guide ring, the side of which is fixedly connected to the inner wall of the cylinder by a fixed rod. The guide ring is slidably connected to a sliding rod, the upper end of which is fixedly fixed to a limit block, and the lower end of which is fixedly connected to the surface of the baffle.

4. The automotive hydraulic oil tank level alarm device as described in claim 1, characterized in that: The support frame includes a base plate, a side plate fixed to the base plate, a top plate fixed to the side plate, a displacement switch installed on the bottom surface of the top plate, a vertical float rod whose lower end passes through the base plate and is slidably connected to the base plate, and a cylinder whose upper end is fixedly connected to the bottom surface of the base plate.

5. The automotive hydraulic oil tank level alarm device as described in claim 1, characterized in that: The alarm circuit includes a relay coil. One end of the displacement switch is connected to one end of the relay coil. The other end of the relay coil is connected to one end of the coils of the buzzer, indicator light, and contactor. The other ends of the buzzer and indicator light are connected to the other end of the displacement switch through the normally open contact of the relay. The other end of the contactor coil is connected to the other end of the displacement switch through the normally closed contact of the relay. The contactor is connected to the motor circuit of the corresponding actuator.

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