Oil tank door locking device

Abstract

The utility model provides an oil groove door locking device which comprises a connecting rod, the two ends of the connecting rod are fixedly connected with a locking nut handle and a check block respectively, the middle of the connecting rod is sleeved with a fixing sleeve, one end of the fixing sleeve is in threaded connection with a fixing nut, and an oil groove door plate is installed between the fixing sleeve and the fixing nut. A fine adjustment nut is connected between the fixing sleeve and the locking nut handle in a threaded mode, and fine adjustment handles which are obliquely arranged towards the locking nut handle are symmetrically installed on the fine adjustment nut. The scheme is applied to the spark machine oil tank door, the structure is simple, the oil tank door can be tightly closed, sparks and cooling liquid generated in the machining process are prevented from overflowing, the sealing performance and the working efficiency of an oil tank are improved, and the overall applicability is high.

Description

Technical Field

[0001] The utility model relates to the field of spark machine equipment, in particular to an oil tank door locking device. Background Art

[0002] As a high-precision machining device, spark machines are widely used in mold manufacturing, aerospace, and electronic components. Their primary operating principle is to process difficult-to-cut materials, such as mold steel, through electroerosion. The efficient operation of spark machines relies on their complex internal electroerosion and cooling systems, generating significant amounts of high temperature, high pressure, sparks, and coolant. To ensure operator safety, improve work efficiency, and maintain long-term stable operation of the equipment, the design of the oil tank door locking device is crucial. The oil tank door is a crucial component of the spark machine, its primary function being to prevent the escape of high-temperature sparks and coolant, thereby protecting the working environment and operator safety. During operation, the internal environment of a spark machine is extremely harsh, characterized by high voltage and temperature, as well as large amounts of sparks and coolant. These factors place high demands on the oil tank door locking device.

[0003] Many spark machine oil tank door locking devices currently on the market are overly simplistic, locking the door solely through a block that latches onto the inside of the oil tank. This results in poor sealing, posing a risk of leakage, especially after prolonged use. These devices often lack effective sealing and locking mechanisms, are prone to failure in high-pressure and high-temperature environments, and fail to provide reliable protection. This situation not only impacts the normal operation of the spark machine but also poses a potential threat to operator safety and the working environment. Utility Model Content

[0004] The purpose of the utility model is to provide an oil tank door locking device, which overcomes the above-mentioned problem of poor sealing due to simple structure.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A oil tank door locking device includes a connecting rod, wherein the two ends of the connecting rod are respectively fixedly connected to a locking nut handle and a block, a fixing sleeve is provided on the middle part of the connecting rod, one end of the fixing sleeve is threadedly connected to a fixing nut, an oil tank door plate is installed between the fixing sleeve and the fixing nut, a fine-tuning nut is threadedly connected between the fixing sleeve and the locking nut handle, and a fine-tuning handle is symmetrically installed on the fine-tuning nut and is tilted toward the locking nut handle.

[0007] Furthermore, a first annular groove is provided in the middle of the connecting rod, a first O-ring is installed in the first annular groove, and the inner wall of the fixing sleeve is arranged closely against the connecting rod.

[0008] Furthermore, the number of the first annular grooves is 4 and is arranged at equal intervals.

[0009] Furthermore, the fixing sleeve includes a sleeve with an external thread on one end, and an annular plate integrally formed with the sleeve is provided at the other end away from the external thread.

[0010] Furthermore, a second annular groove is provided on the inner side of the annular plate, and a second O-ring is installed in the second annular groove.

[0011] Furthermore, the locking nut handle and the stopper are both threadedly connected to the connecting rod and fixed by machine screws.

[0012] Furthermore, an inclined surface is provided on the side of the fine-tuning nut close to the locking nut handle, and the inclined surface is provided with a threaded hole threadedly connected to the fine-tuning handle.

[0013] Furthermore, the diameter of the middle portion of the connecting rod is larger than the diameters of both sides thereof.

[0014] Furthermore, the locking nut handle includes an integrally formed first frustum and a second frustum, the diameter of the first frustum is larger than the diameter of the second frustum, and the second frustum is provided with a threaded hole threadedly connected to the connecting rod.

[0015] In summary, this technical solution has the following advantages:

[0016] The locking device provided by this utility model features a simple design. By optimizing the mechanical structure, it reduces the use of complex components, making the device easier to manufacture and install while also reducing production costs. Furthermore, its innovative locking mechanism ensures that the oil tank door panel remains securely locked during operation, preventing leakage and improving equipment safety. Overall, this further enhances the overall sealing performance of the oil tank, preventing liquid or gas leakage and ensuring a stable internal environment during efficient equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of an oil tank door locking device of the utility model;

[0018] Figure 2 This is a cross-sectional view of an oil tank door locking device of the utility model;

[0019] Figure 3 This is an application effect diagram of the utility model.

[0020] In the figure: 1. Connecting rod; 2. Locking nut handle; 201. First frustum; 202. Second frustum; 3. Stopper; 4. Fixing sleeve; 401. Sleeve; 402. Ring plate; 5. Fixing nut; 6. Oil tank door panel; 7. Fine-tuning nut; 8. Fine-tuning handle; 9. First O-ring; 10. Second O-ring; 11. Oil tank body. DETAILED DESCRIPTION

[0021] The following is a further explanation of the technical solutions for achieving the purpose of the present invention through specific embodiments. It should be noted that the technical solutions claimed for protection by the present invention include but are not limited to the following embodiments.

[0022] An oil tank door locking device, such as Figure 1-3 As shown, it includes a connecting rod 1, the two ends of which are fixedly connected to the locking nut handle 2 and the stopper 3 respectively, the middle part of the connecting rod 1 is provided with a fixing sleeve 4, one end of the fixing sleeve 4 is threadedly connected to the fixing nut 5, an oil tank door plate 6 is installed between the fixing sleeve 4 and the fixing nut 5, a fine-tuning nut 7 is threadedly connected between the fixing sleeve 4 and the locking nut handle 2, and a fine-tuning handle 8 is symmetrically installed on the fine-tuning nut 7 and is tilted toward the locking nut handle 2.

[0023] The inner wall of the fixing sleeve 4 is placed tightly against the connecting rod 1. A first annular groove is provided in the middle of the connecting rod 1. A first O-ring 9 is installed in the first annular groove to seal between the connecting rod 1 and the fixing sleeve 4. There are four first annular grooves arranged at equal intervals.

[0024] The fixing sleeve 4 includes a sleeve 401 with an external thread on one end. An annular plate 402 is provided at the other end, away from the external thread, and is integrally formed with the sleeve 401. A second annular groove is provided on the inner side of the annular plate 402. A second O-ring 10 is installed in the second annular groove to seal between the annular plate 402 and the oil tank door panel 6.

[0025] The locking nut handle 2 and the stopper 3 are both threadedly connected to the ends of the connecting rod 1 and fixed by machine screws. By rotating the locking nut handle 2, the connecting rod 1 and the stopper 3 are driven to rotate together, so that the stopper 3 is stuck on the inner side of the oil tank body 11 to achieve locking.

[0026] The locking nut handle 2 includes an integrally formed first truncated cone 201 and a second truncated cone 202, wherein the diameter of the first truncated cone 201 is larger than the diameter of the second truncated cone 202, so that the handle can be grasped and rotated by hand. The second truncated cone 202 is provided with a threaded hole for threaded connection with the connecting rod 1.

[0027] The fine-tuning nut 7 is provided with an inclined surface on one side close to the locking nut handle 2, and the inclined surface is provided with a threaded hole threadedly connected to the fine-tuning handle 8. The middle diameter of the connecting rod 1 is larger than the diameter of its two sides.

[0028] The oil tank door locking device provided by the present invention is as follows: when in use, the oil tank door panel 6 is first fixed between the fixing sleeve 4 and the fixing nut 5; by tightening the fixing nut 5, the contact surface of the oil tank door panel 6 and the fixing sleeve 4, as well as the contact surface of the oil tank door panel 6 and the fixing nut 5 are tightly fitted; the locking nut handle 2 is rotated to make the block 3 stuck on the inner side of the oil tank body 11, thereby completing the locking; finally, the fine-tuning handle 8 is used to drive the fine-tuning nut 7 to rotate, so that the connecting rod 1 and the fine-tuning nut 7 produce relative movement, prompting the connecting rod 1 to move toward the outside of the oil tank door panel 6, thereby achieving further locking of the oil tank body 11 and the oil tank door panel 6.

Claims

1. An oil tank door locking device, characterized in that: The invention comprises a connecting rod (1), wherein the two ends of the connecting rod (1) are respectively fixedly connected to a locking nut handle (2) and a stopper (3); a fixing sleeve (4) is sleeved on the middle part of the connecting rod (1); one end of the fixing sleeve (4) is threadedly connected to a fixing nut (5); an oil tank door plate (6) is installed between the fixing sleeve (4) and the fixing nut (5); a fine-adjustment nut (7) is threadedly connected between the fixing sleeve (4) and the locking nut handle (2); and a fine-adjustment handle (8) is symmetrically installed on the fine-adjustment nut (7) and is tilted toward the locking nut handle (2).

2. The oil tank door locking device according to claim 1, characterized in that: A first annular groove is provided in the middle of the connecting rod (1), a first O-type sealing ring (9) is installed in the first annular groove, and the inner wall of the fixing sleeve (4) is arranged in close contact with the connecting rod (1).

3. The oil tank door locking device according to claim 2, characterized in that: The number of the first annular grooves is 4 and is arranged at equal intervals.

4. The oil tank door locking device according to claim 1, characterized in that: The fixing sleeve (4) comprises a sleeve (401) with an external thread at one end, and an annular plate (402) integrally formed with the sleeve (401) is provided at the other end away from the external thread.

5. The oil tank door locking device according to claim 4, characterized in that: A second annular groove is provided on the inner side of the annular plate (402), and a second O-type sealing ring (10) is installed in the second annular groove.

6. The oil tank door locking device according to claim 1, characterized in that: The locking nut handle (2) and the stopper (3) are both threadedly connected to the connecting rod (1) and fixed by machine screws.

7. The oil tank door locking device according to claim 1, characterized in that: An inclined surface is provided on the side of the fine-tuning nut (7) close to the locking nut handle (2), and a threaded hole is provided on the inclined surface for threaded connection with the fine-tuning handle (8).

8. The oil tank door locking device according to claim 1, characterized in that: The diameter of the middle portion of the connecting rod (1) is larger than the diameters of its two sides.

9. The oil tank door locking device according to claim 1, characterized in that: The locking nut handle (2) comprises an integrally formed first truncated cone (201) and a second truncated cone (202); the diameter of the first truncated cone (201) is larger than the diameter of the second truncated cone (202); and the second truncated cone (202) is provided with a threaded hole threadedly connected to the connecting rod (1).

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