Warning assembly for low liquid level of oil tank of wheeled tractor

Abstract

The utility model relates to a low-liquid-level alarm assembly for a wheeled tractor oil tank, which aims to solve the technical problem that installation or detachment is not convenient enough due to the fact that the visual field of installation or detachment of a sensor head in an inner cavity of an oil tank is not wide enough, and comprises a liquid level sensor body, a fixing ring and a connecting circular plate, the fixing ring is fixedly arranged at an opening in the bottom of the oil tank outer wall; the inner ring wall of the fixing ring is aligned with the inner wall of the hole in the bottom of the oil tank outer wall; the fixing ring is matched with the sensing head of the liquid level sensor body in a penetrating manner; the connecting circular plate is sleeved on a metal wire pipe of the liquid level sensor body; the oil tank liquid level sensor has the advantages that the liquid level sensor body is installed in an inserted mode from the outside of the oil tank, the liquid level sensor body does not need to stretch into the oil tank when installed or disassembled, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of oil tank liquid level alarm, in particular to a low liquid level alarm component of an oil tank of a wheeled tractor. Background Art

[0002] Wheeled tractor is a type of tractor, that is, a tractor with wheels as the running gear. (Different from crawler tractors) There are many types such as two-wheel (walk-behind tractors) and four-wheel. It is also divided into rear-wheel drive and four-wheel drive. High-horsepower wheeled tractors have better traction performance and are suitable for large farms equipped with wide-width agricultural implements for high-speed operations.

[0003] The tractor can move because the power of the internal combustion engine is transmitted through the transmission system, so that the drive wheel obtains the driving torque Mk. The drive wheel that obtains the driving torque then applies a small, backward horizontal force (tangential force) to the ground through the tire pattern and tire surface, and the ground reacts with a horizontal reaction force Pk of equal magnitude and opposite direction to the driving force. This Pk reaction force is the driving force (also called feeding propulsion force) that pushes the tractor forward. When the driving force Pk is sufficient to overcome the forward rolling resistance of the front and rear wheels and the traction resistance of the agricultural implements, the tractor moves forward. If the driving wheel is lifted off the ground, that is, the driving force Pk is equal to zero, the driving wheel can only idle in place and the tractor cannot move; if the sum of the rolling resistance and the traction resistance is greater than the driving force Pk, the tractor cannot move.

[0004] Wheeled tractors install a level sensor at the bottom of the fuel tank. When the oil level in the tank reaches a low level, the sensor is exposed and an alarm is triggered to indicate that the tank is low on oil. The existing sensor is divided into two sections. The sensor head is installed in the tank. The connecting pipe of the sensor head passes through the hole in the tank wall. The connecting head is connected to the outside and tightened. The two sections clamp the tank wall for positioning.

[0005] However, the fuel tank of a wheeled tractor is relatively large and deep. When installing or removing the sensor head, the worker needs to put his hand into the fuel tank. The field of vision inside the fuel tank is not wide enough, and installation or removal is not convenient.

[0006] In view of this, we propose a low liquid level alarm component for a wheeled tractor oil tank. Utility Model Content

[0007] The purpose of the utility model is to overcome the deficiencies of the prior art, meet actual needs, and provide a low liquid level alarm component for a wheeled tractor oil tank to solve the current technical problem that the field of view of installing or removing a sensor head in the inner cavity of the oil tank is not wide enough, resulting in inconvenient installation or removal.

[0008] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: designing a low liquid level alarm component of a wheeled tractor oil tank, including a liquid level sensor body, and also including:

[0009] The fixing ring is fixedly arranged at the opening at the bottom of the outer wall of the fuel tank;

[0010] The inner ring wall of the fixing ring is aligned with the inner wall of the opening at the bottom of the outer wall of the fuel tank;

[0011] The fixing ring is inserted and matched with the sensing head of the liquid level sensor body;

[0012] The connecting circular plate is sleeved on the metal wire tube of the liquid level sensor body;

[0013] Wherein, the fixing ring and the connecting circular plate are positioned and matched through a plurality of bolts distributed in an annular array.

[0014] Preferably, a rubber sleeve is fixedly arranged inside the connecting circular plate;

[0015] Wherein, the rubber sleeve is sleeved on the metal wire tube of the liquid level sensor body, and the inner side opening of the rubber sleeve is sleeved on the sensing head connecting end of the liquid level sensor body;

[0016] Wherein, the outer ring wall of the rubber sleeve is in abutting fit with the inner ring wall of the fixing ring.

[0017] Preferably, an annular inclined surface is arranged inside the outer ring wall of the rubber sleeve;

[0018] Wherein, the annular inclined surface inclines inwards.

[0019] Preferably, a plurality of annular protrusions are arranged outside the outer ring wall of the rubber sleeve, and the annular protrusions are in snap fit with a plurality of annular grooves formed in the inner ring wall of the fixing ring.

[0020] Preferably, the cross section of the annular protrusion is designed in a trapezoidal structure, and the annular protrusion is adapted to the annular groove.

[0021] Preferably, two insertion blocks are symmetrically and fixedly arranged inside the connecting circular plate, two insertion slots are symmetrically formed in the outer ring wall of the fixing ring, and the insertion blocks are in insertion fit with the insertion slots.

[0022] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0023] 1. By arranging the fixing ring, the connecting circular plate and the bolts, the utility model has the advantages of inserting and installing the liquid level sensor body from the outside of the fuel tank, and not needing to extend into the fuel tank when installing or disassembling the liquid level sensor body, which is convenient to operate, and solves the problems that when installing or disassembling the sensor head, the staff needs to put their hands into the fuel tank, the field of vision in the inner cavity of the fuel tank is not wide enough, and the installation or disassembly is not convenient enough.

[0024] 2. The utility model has the advantage of sealing when the sensing head of the liquid level sensor body is inserted into the fuel tank area by arranging a rubber collar, and maintaining the sealing performance after the liquid level sensor body is installed.

[0025] 3. The utility model has the advantage that the inner side of the rubber collar can pass through the fixing ring more smoothly and be inserted into the fuel tank by arranging an annular inclined surface.

[0026] 4. The utility model has the advantage of enhancing the seal at the tight contact between the outer wall of the outer circle of the rubber collar and the inner wall of the fixing ring by arranging an annular protrusion and an annular groove, so that the sealing effect of the rubber collar is better.

[0027] 5. The utility model has the advantage of guiding and limiting the moving connecting circular plate when the fixing ring and the connecting circular plate are butted by arranging a plug and a slot, so that after the fixing ring and the connecting circular plate are butted, the screw holes on the fixing ring correspond to the holes on the connecting circular plate, which is convenient for bolts to be screwed in and fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is the overall structural schematic diagram of the utility model;

[0029] Figure 2 is the exploded structural schematic diagram of the utility model;

[0030] Figure 3 is the partial sectional connection structural schematic diagram of the utility model;

[0031] Figure 4 is the Figure 3 enlarged schematic diagram at A of the utility model;

[0032] In the figure: 1. Liquid level sensor body; 2. Connecting circular plate; 3. Fixing ring; 4. Bolt; 5. Rubber collar;

[0033] 201. Plug;

[0034] 301. Slot; 302. Annular groove;

[0035] 501. Annular protrusion; 502. Annular inclined surface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0037] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. shall be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0039] Embodiment 1: A low liquid level alarm assembly for a wheeled tractor fuel tank. Refer to Figures 1 to 4 , which includes a liquid level sensor body 1, and also includes a fixing ring 3 and a connecting circular plate 2;

[0040] The fixing ring 3 is fixedly arranged at the opening at the bottom of the outer wall of the fuel tank;

[0041] The inner wall of the inner ring of the fixing ring 3 is aligned with the inner wall of the opening at the bottom of the outer wall of the fuel tank;

[0042] The fixing ring 3 is in insertion fit with the sensing head of the liquid level sensor body 1;

[0043] The connecting circular plate 2 is sleeved on the metal wire tube of the liquid level sensor body 1;

[0044] Among them, the fixing ring 3 and the connecting circular plate 2 are positioned and matched through a plurality of bolts 4 distributed in an annular array.

[0045] By setting the fixing ring 3, the connecting circular plate 2 and the bolts 4, the present utility model has the advantages of inserting and installing the liquid level sensor body 1 from the outside of the fuel tank, and not needing to extend into the fuel tank when installing or disassembling the liquid level sensor body 1, which is convenient for operation, and solves the problem that when installing or disassembling the sensor head, the staff needs to put their hands into the fuel tank, and the vision in the inner cavity of the fuel tank is not wide enough, and the installation or disassembly is not convenient enough.

[0046] Specifically, a rubber sleeve 5 is fixedly arranged on the inner side of the connecting circular plate 2;

[0047] Among them, the rubber collar 5 is sleeved on the metal wire tube of the liquid level sensor body 1, and the inner opening of the rubber collar 5 is sleeved on the sensing head connection end of the liquid level sensor body 1;

[0048] Among them, the outer wall of the rubber collar 5 abuts and cooperates with the inner wall of the fixing ring 3.

[0049] By providing the rubber collar 5, the utility model has the advantages of sealing when the sensing head of the liquid level sensor body 1 is inserted into the fuel tank area and maintaining the sealing performance after the liquid level sensor body 1 is installed.

[0050] Furthermore, an annular inclined surface 502 is provided on the inner side of the outer wall of the rubber collar 5;

[0051] Among them, the annular inclined surface 502 inclines inwards.

[0052] The provision of the annular inclined surface 502 enables the inner side of the rubber collar 5 to pass through the fixing ring 3 more smoothly and insert into the fuel tank.

[0053] Still further, a plurality of annular protrusions 501 are provided on the outer side of the outer wall of the rubber collar 5, and the annular protrusions 501 are in snap-fit with a plurality of annular grooves 302 provided on the inner wall of the fixing ring 3.

[0054] By providing the annular protrusions 501 and the annular grooves 302, the utility model has the advantages of strengthening the seal at the tight contact between the outer side of the outer wall of the rubber collar 5 and the inner wall of the fixing ring 3, making the sealing effect of the rubber collar 5 better.

[0055] It should be noted that the cross-section of the annular protrusion 501 is designed in a trapezoidal structure, and the annular protrusion 501 is adapted to the annular groove 302.

[0056] After the trapezoidal annular protrusion 501 is snap-fitted with the annular groove 302, a folded contact surface is formed, strengthening the sealing effect.

[0057] It should be noted that two insertion blocks 201 are symmetrically fixed on the inner side of the connecting circular plate 2, and two insertion slots 301 are symmetrically provided on the outer wall of the fixing ring 3, and the insertion blocks 201 are in insertion fit with the insertion slots 301.

[0058] By providing the insertion blocks 201 and the insertion slots 301, the utility model has the advantages of guiding and limiting the moving connecting circular plate 2 when the fixing ring 3 and the connecting circular plate 2 are butted, so that after the fixing ring 3 and the connecting circular plate 2 are butted, the screw holes on the fixing ring 3 correspond to the holes on the connecting circular plate 2, facilitating the screwing of the bolt 4 for fixing.

[0059] Working principle: When using the device of the present utility model, the sensing head of the liquid level sensor body 1 is inserted correspondingly through the opening at the bottom of the outer wall of the fuel tank where the fixing ring 3 is located. The sensing head of the liquid level sensor body 1 is inserted into the fuel tank. The inner side of the rubber sleeve 5 passes through the fixing ring 3. After aligning the insertion block 201 with the slot 301, it is further inserted into the liquid level sensor body 1 until the fixing ring 3 contacts the connecting circular plate 2. At this time, the annular protrusion 501 and the annular groove 302 are engaged. The bolt 4 is screwed into the screw hole on the fixing ring 3 through the hole on the connecting circular plate 2 to fix the fixing ring 3 and the connecting circular plate 2. The insertion connection area of the liquid level sensor body 1 is sealed by the rubber sleeve 5. When disassembling the liquid level sensor body 1, loosen and remove the bolt 4, and then pull out the liquid level sensor body 1 outside the fuel tank.

[0060] The embodiments disclosed in the present utility model are the preferred embodiments, but not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present utility model based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present utility model, they are within the protection scope of the present utility model.

Claims

1. A low liquid level alarm assembly for a wheeled tractor oil tank, comprising a liquid level sensor body (1), characterized in that: Also includes: A fixing ring (3) is inserted and matched with the sensing head of the liquid level sensor body (1); A connecting circular plate (2) is sleeved on the metal wire tube of the liquid level sensor body (1); The fixing ring (3) and the connecting circular plate (2) are positioned and matched by a plurality of bolts (4) distributed in a ring array.

2. A wheeled tractor oil tank low liquid level alarm assembly as claimed in claim 1, characterized in that: A rubber ring (5) is fixedly provided on the inner side of the connecting circular plate (2); The rubber ferrule (5) is sleeved on the metal wire tube of the liquid level sensor body (1), and the inner opening of the rubber ferrule (5) is sleeved on the sensing head connection end of the liquid level sensor body (1); The outer wall of the rubber ring (5) is in abutment with the inner wall of the fixing ring (3).

3. A wheeled tractor oil tank low liquid level alarm assembly as claimed in claim 2, characterized in that: An annular inclined surface (502) is provided on the inner side of the outer ring wall of the rubber ring (5); Wherein, the annular inclined surface (502) is inclined inwards.

4. A wheeled tractor oil tank low liquid level alarm assembly as claimed in claim 2, characterized in that: A plurality of annular protrusions (501) are provided on the outer side of the outer ring wall of the rubber ring (5), and the annular protrusions (501) are snap-fitted with a plurality of annular grooves (302) provided on the inner ring wall of the fixing ring (3).

5. A wheeled tractor oil tank low liquid level alarm assembly as claimed in claim 4, characterized in that: The cross section of the annular protrusion (501) is designed in a trapezoidal structure, and the annular protrusion (501) is adapted to the annular groove (302).

6. A wheeled tractor oil tank low liquid level alarm assembly as claimed in claim 1, characterized in that: Two insert blocks (201) are symmetrically fixed on the inner side of the connecting circular plate (2), and two slots (301) are symmetrically provided on the outer wall of the fixing ring (3), and the insert blocks (201) are inserted and matched with the slots (301).

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