fuel tank opening device

Abstract

This utility model relates to the field of auxiliary tools and discloses a fuel tank opening device, including a base, a lifting structure mounted on the base, and an upper clamping mechanism. The lifting structure has a worktable for supporting the fuel tank. The upper clamping mechanism includes a drive component mounted on the side of the base, a mounting block fixed to the base, and a movable block arranged opposite to the mounting block. A first guide rail is provided on the mounting block, and the movable block slides along the first guide rail. A connecting rod connects the movable block to the drive component on the side away from the mounting block. Slots are formed on the opposite sides of the movable block and the mounting block, and these slots match the fuel tank opening. When the movable block approaches the mounting block, the two slots clamp the fuel tank opening. This utility model achieves efficient alignment and clamping of the fuel tank opening through the drive component and guide rail guidance, significantly improving work efficiency. The continuous operation of the drive component prevents accidental loosening and ensures operational safety.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary tools, specifically to a fuel tank opener. Background Technology

[0002] In the field of fuel tank machining, especially during drilling or cutting operations on fuel tank openings, stable clamping and precise positioning of the fuel tank are usually required to ensure machining accuracy and prevent deformation or damage due to uneven force. Traditional fuel tank clamping devices typically rely on manual adjustment or simple mechanical structures to fix the fuel tank, which makes it difficult to ensure a uniform distribution of clamping force. This can easily lead to the fuel tank opening shifting or slipping during machining, affecting machining accuracy. Furthermore, fuel tanks vary in size and shape, and traditional fixtures often require frequent manual adjustments to accommodate different specifications, which is cumbersome, time-consuming, and reduces production efficiency.

[0003] In the prior art, Chinese Patent Publication No. CN218747314U discloses an adaptive clamping fixture, including a base plate. A first fixed block and a second fixed block are disposed opposite each other on the base plate. A movable block is movably connected between the first fixed block and the second fixed block. A first spring is connected to the side of the movable block closest to the second fixed block, and the other end of the first spring is connected to the second fixed block. A variable-size clamping position is formed between the first fixed block and the movable block. The clamping position can change according to the size of the object to be processed. Regardless of the size of the clamping position, the first spring applies a pushing force to the movable block, causing the movable block and the first fixed block to clamp it. The dynamic change of the clamping position is achieved through the cooperation of the movable block and the first spring to adapt to products of different sizes and specifications.

[0004] The above-mentioned prior art still has the following defects: The above-mentioned prior art uses a spring to apply a pushing force to the movable block to achieve clamping. Relying on the elastic deformation force of the spring, the passive elastic clamping work may cause the spring force to be too large and damage the object, or the spring may be prone to elastic fatigue after long-term use, affecting the clamping stability.

[0005] Secondly, when the inventor drills holes in the fuel tank, the clamping mechanism used is a rocker plate. The four corners of the fuel tank are fixed by four rocker plates before drilling. After drilling, the drilling machine must be turned off before the rocker can be manually pulled to lift the plate, so that the fuel tank can be released and removed. The operation of the four clamping mechanisms during the front and rear clamping and releasing process is time-consuming, which reduces the processing efficiency. Utility Model Content

[0006] The present invention aims to provide a fuel tank opening device to solve the problem of low fuel tank opening clamping efficiency in the prior art.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a fuel tank opening device, including a base, a lifting structure mounted on the base, and an upper clamping mechanism. The lifting structure is provided with a worktable for supporting the fuel tank. The upper clamping mechanism includes a driving component mounted on the side of the base, a mounting block fixed on the base, and a movable block arranged opposite to the mounting block. A first guide rail is provided on the mounting block, and the movable block slides along the first guide rail. A connection is provided on the side of the movable block away from the mounting block. The movable block is connected to the driving component through a connecting rod. The driving component is used to drive the movable block closer to or away from the mounting block. A slot is formed on the opposite side of the movable block and the mounting block. The two slots match the fuel tank opening. When the movable block approaches the mounting block, the two slots are used to clamp the fuel tank opening.

[0008] Beneficial effects:

[0009] 1. Highly efficient and stable clamping and positioning: Through the drive component and guide rail, the movable block can quickly and accurately approach or move away from the mounting block, achieving efficient alignment and clamping of the tank opening, greatly improving work efficiency. The stable output of the drive component can ensure the stability and durability of the clamping force; while the guide rail structure can enhance the stability of the movement, ensuring smooth movement of the movable block, reducing offset or vibration, and reducing the risk of accidents.

[0010] 2. Safe and reliable clamping: The matching design of the slot and the oil tank ensures that the slot is evenly stressed when the drilling machine is drilling, preventing the oil tank opening from slipping or deforming during clamping, reducing the risk of damage to the oil tank, and effectively protecting the integrity of the oil tank structure; while the lead screw drive has self-locking properties, automatically maintaining fixation after clamping, avoiding accidental loosening during operation, and ensuring operational safety.

[0011] 3. High applicability: The worktable supports the oil tank and forms a double fixation with the upper clamping mechanism to ensure stability during processing and improve processing accuracy. In addition, the worktable and the lifting structure can be used to flexibly adjust the height of the oil tank, which is convenient for adapting to oil tanks of different sizes and reducing manual adjustment time.

[0012] Preferably, as an improvement, the lifting mechanism includes scissor arms disposed on both sides of the worktable, with the two ends of the scissor arms respectively hinged to the base and the bottom of the worktable via hinge shafts.

[0013] Beneficial effects: The articulated structure of the scissor arm allows the lifting action to be completed through the coordinated rotation of multiple sets of levers, and the movement trajectory is controllable. Compared with single-lever or single-side driven lifting methods, it can significantly reduce the shaking or offset of the worktable and ensure the stability of the lifting process.

[0014] Preferably, as an improvement, the scissor arm includes two cross-hinged rotating links. A first nut seat and a second nut seat are fixedly connected to the bottom of the base and the worktable near the upper clamping mechanism. A first slider and a second slider are provided on the bottom of the base and the worktable away from the upper clamping mechanism. One end of each rotating link is connected to the first nut seat and the second nut seat respectively, and the other end is connected to the first slider and the second slider respectively.

[0015] Beneficial effects: The scissor arm, composed of two cross-hinged rotating links, can evenly distribute the load of the worktable onto each link during lifting, avoiding excessive local stress. Simultaneously, the nut seat and slider are respectively located on both sides of the base and the bottom of the worktable, making the force on both ends of the scissor arm more balanced, further optimizing the stress situation of the entire mechanism and extending the service life of components.

[0016] Preferably, as an improvement, the lifting assembly further includes a second guide rail and a third guide rail. The two ends of the second guide rail are respectively fixedly connected to the second nut seat and the worktable, and the two ends of the third guide rail are respectively fixedly connected to the first nut seat and the base. The first slider and the second slider are respectively slidably connected to the second guide rail and the third guide rail.

[0017] Beneficial effects: The second and third guide rails, in conjunction with the first and second sliders, provide additional support and constraints for the lifting assembly, restricting the worktable in multiple directions during lifting and lowering, reducing the possibility of swaying and deviation, thereby enhancing the stability of the entire lifting structure.

[0018] Preferably, as an improvement, the lifting mechanism further includes a transmission screw connected to the worktable and a wheel that drives the transmission screw to rotate. One end of the transmission screw passes through the second slider and is connected to the second nut seat. The side of the worktable away from the upper clamping mechanism extends downward to form a connecting part, and the wheel is mounted on the connecting part.

[0019] Beneficial effects: The cooperation between the transmission screw and the second nut seat forms a helical transmission structure. The screw is driven to rotate by the wheel, which can convert the rotational motion into the smooth lifting and lowering of the worktable.

[0020] Preferably, as an improvement, the lifting mechanism also includes a hand crank fixedly connected to the wheel, the hand crank being used to drive the wheel to rotate.

[0021] Beneficial effects: Hand cranks are usually designed with non-slip grips, which increase the friction between the hand and the crank, preventing accidents caused by slipping during operation. In addition, when gripping the crank and applying force, the operator's hand position is more stable, allowing for better control of the lifting speed and rhythm, reducing worktable shaking or impact caused by unstable force, and improving overall operational safety.

[0022] Preferably, as an improvement, the wheel is provided with scale lines.

[0023] Beneficial effects: The scale lines can serve as a height reference. When the worktable needs to be adjusted to the same height multiple times, the operator only needs to rotate the wheel to the corresponding scale, without the need for repeated measurement or calibration, which greatly improves the efficiency of repeatable positioning.

[0024] Preferably, as an improvement, the mounting block is provided with positioning holes.

[0025] Beneficial effects: The positioning holes can serve as a reference for connecting the mounting block to the oil tank. By cooperating with positioning pins, bolts, etc., the mounting block can be quickly fixed in the preset position, ensuring the accuracy of the installation position and avoiding assembly deviations caused by manual alignment errors.

[0026] Preferably, as an improvement, a protective pad is provided on the card slot.

[0027] Beneficial effects: Protective pads are usually made of soft or cushioning materials such as rubber, silicone, or velvet, which can prevent direct contact between the fuel tank and the hard surface of the card slot, prevent the surface of the stuck object from being scratched or worn, and at the same time reduce the wear and tear of the card slot itself caused by long-term friction and collision, thus extending the service life of the card slot; in addition, the surface of the protective pad usually has a certain degree of roughness, which can increase the friction between the stuck object and the card slot, effectively preventing the object from sliding, shifting or falling off in the card slot.

[0028] Preferably, as an improvement, the protective pad is formed with threads that match the threads on the side of the tank opening.

[0029] Beneficial effects: The thread-matching design not only provides stable clamping force, ensuring that the oil tank does not shift during processing, but also avoids thread scratches or indentations that may occur when traditional metal clamps directly contact the oil tank opening. Attached Figure Description

[0030] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0031] Figure 2 This is a partial schematic diagram of an embodiment of the present utility model.

[0032] Figure 3 This is a schematic diagram of the structure of the mounting block and the movable block in an embodiment of this utility model.

[0033] The reference numerals in the accompanying drawings include: base 1, support plate 11, lifting mechanism 2, scissor arm 21, rotating connecting rod 211, first nut seat 212, second nut seat 213, first slider 214, second slider 215, transmission screw 22, wheel 23, second guide rail 24, third guide rail 25, hand crank 26, upper clamping mechanism 3, driving component 31, mounting block 32, positioning hole 321, movable block 33, first guide rail 34, connecting rod 35, worktable 4, connecting part 41, protective pad 5, scale line 6. Detailed Implementation

[0034] The following detailed description illustrates the specific implementation method:

[0035] Example 1

[0036] like Figure 1 and Figure 2 As shown, this embodiment discloses a fuel tank opening device, including a base 1, a lifting mechanism 2 mounted on the base 1, and an upper clamping mechanism 3. The lifting mechanism 2 is equipped with a worktable 4 for supporting the fuel tank. Figure 1 As shown, the upper clamping mechanism 3 includes a drive member 31 mounted on the side of the base 1, a mounting block 32 fixed on the base 1, and a movable block 33 arranged opposite to the mounting block 32. The drive member 31 is welded to the support plate 11 on the side of the base 1. A first guide rail 34 is welded on the mounting block 32. The movable block 33 slides along the first guide rail 34. Specifically, the movable block 33 is connected to a connecting rod 35 on the side away from the mounting block 32. The movable block 33 is connected to the power output end of the drive member 31 through the connecting rod 35. The drive member 31 is used to drive the movable block 33 to move closer to or away from the mounting block 32. The movable block 33 and the mounting block 32 each have a slot 321 on the opposite side. The two slots 321 match the opening of the oil tank. When the movable block 33 moves closer to the mounting block 32, the two slots 321 are used to clamp the opening of the oil tank. To prevent the edge of the slot from scratching the oil tank, a rubber protective pad 5 is installed on the inner circumference of the slot. This protective pad 5 has threads that match the threads on the side of the oil tank opening. It is worth noting that in other embodiments besides this one, the drive component 31 can be a hydraulic, pneumatic, or electric mechanism. The connecting rod 35 will also vary depending on the choice of drive component. When a hydraulic cylinder or pneumatic cylinder is used, the connecting rod 35 is a rod body; if the drive component 31 uses a rotary motor, the connecting rod 35 is a lead screw. In this embodiment, the latter is preferred.

[0037] Specifically, such as Figure 2 As shown, the mounting hole is provided with a positioning hole 321, which is used to position oil tanks of different heights. Since the oil tank is provided with a positioning groove at the corresponding position, positioning can be achieved by simply inserting a positioning pin.

[0038] The lifting mechanism 2 includes scissor arms 21 disposed on both sides of the worktable 4. The two ends of the scissor arms 21 are respectively hinged to the base 1 and the bottom of the worktable 4 via hinge shafts. Each scissor arm 21 includes two cross-hinged rotating connecting rods 211. A first nut seat 212 and a second nut seat 213 are fixedly connected to the bottom of the base 1 and the worktable 4 near the upper clamping mechanism 3. A first slider 214 and a second slider 215 are disposed on the bottom of the base 1 and the worktable 4 away from the upper clamping mechanism 3. The first slider 214 and the second slider 215 are suspended in the air. One end of each rotating connecting rod 211... The first slider 214 is connected to the first nut seat 212 and the second nut seat 213 respectively, and the other end is connected to the first slider 214 and the second slider 215 respectively. The first slider 214 and the second slider 215 deviate and tilt during the sliding process. The lifting assembly also includes a second guide rail 24 and a third guide rail 25. The two ends of the second guide rail 24 are fixedly connected to the second nut seat 213 and the worktable 4 respectively, and the two ends of the third guide rail 25 are fixedly connected to the first nut seat 212 and the base 1 respectively. The first slider 214 and the second slider 215 are slidably connected to the second guide rail 24 and the third guide rail 25 respectively.

[0039] like Figure 1 and Figure 2 As shown, the lifting mechanism 2 also includes a transmission screw 22 connected to the worktable 4 and a wheel 23 that drives the transmission screw 22 to rotate. The wheel 23 is provided with scale lines to accommodate oil tanks of different heights. A hand crank 26 is welded to the side of the wheel 23 away from the transmission screw 22, and the hand crank 26 is covered with an anti-slip rubber sleeve. One end of the transmission screw 22 passes through the second slider 215 and is connected to the second nut seat 213. The other end of the transmission screw 22 is welded to the wheel 23. The side of the worktable 4 away from the upper clamping mechanism 3 extends downward to form a connecting part 41. The wheel 23 is bolted to the connecting part 41. The transmission screw 22 is threadedly connected to the middle of the second slider 215, so that when the hand crank 26 is rotated, the transmission screw 22 drives the second slider 215 to move back and forth along the axis of the transmission screw 22 through threaded transmission. Then, through the cross-hinged connection, it drives the first slider 214 connected to another rotating connecting rod 211 to move, thereby opening and closing the scissor arm 21 to complete the lifting and lowering of the worktable 4. It is worth noting that in other embodiments besides this one, the lifting mechanism 2 can also adopt the existing lifting mechanism 2 of motor, hydraulic, pneumatic, etc. Preferably, the motor drives the screw 22 to rotate to realize the lifting and lowering action of the worktable 4.

[0040] Example 2

[0041] To increase the clamping speed, this embodiment also includes a sensor (not shown in the figure) and a control system. The sensor is installed on the base 1 near the upper clamping mechanism 3. The sensor is a position sensor. When the oil tank is placed on the worktable 4 and enters the preset position, the sensor immediately detects the target and sends a trigger signal to the control system. The control system is a PLC or a microcontroller. After receiving the signal, the control system controls the drive component 31 to start. The drive component 31 drives the movable block 33 to move quickly along the guide rail to complete the clamping of the oil tank opening.

[0042] The method for using the fuel tank opener is as follows:

[0043] 1. Adjust the height of worktable 4: Rotate the hand crank 25 to drive the transmission screw 22 to rotate, which in turn extends and retracts the scissor arm 21, raising or lowering worktable 4 to a suitable height. During the process, you can observe the equally spaced graduation lines 6 on the dial 23 to select the graduation position corresponding to the current oil tank model. Rotate the hand crank 25 to align the pointer of the dial 23 with the target graduation, ensuring that worktable 4 is accurately positioned at the preset height and avoiding repeated adjustments.

[0044] 2. Oil tank positioning and fixing: Place the oil tank stably on the worktable 4, ensuring that its opening faces the clamping mechanism 3. If the oil tank has positioning requirements, the positioning pin can be used to assist in alignment through the positioning hole 321 on the mounting block 32 to ensure accurate machining position.

[0045] 3. Clamping the oil tank opening: Activate the drive unit 31 to push the movable block 33 along the first guide rail 34 towards the mounting block 32. When the movable block 33 closes with the slot on the mounting block 32, the oil tank opening is stably clamped, ensuring no loosening or displacement during processing. If the oil tank opening is threaded, the protective pad 5 inside the slot can prevent damage to the threads, improving the yield rate.

[0046] 4. Perform machining operations: After the oil tank opening is securely clamped, subsequent machining (such as tapping, reaming, welding, etc.) can be performed. During machining, the clamping force can be adjusted by finely adjusting the hand crank 25 or the drive component 31 to ensure appropriate clamping force and avoid workpiece deformation.

[0047] 5. Complete machining and reset: After machining is completed, reverse the operation of drive component 31 to retract movable block 33 and release the oil tank. If the oil tank specification needs to be changed, repeat the steps and use the wheel 23 scale to quickly adjust to the new height to improve changeover efficiency.

[0048] Example 2

[0049] like Figure 3As shown, the difference between this embodiment and embodiment 1 is that, in order to ensure that the tank opening is not damaged during processing, the device is provided with a protective pad 5 in the clamping slot. Specifically, the protective pad 5 is elastic and made of wear-resistant and pressure-resistant polymer material, which has good buffering performance and durability, and can effectively absorb mechanical stress during clamping and prevent the tank opening from deforming due to rigid contact.

[0050] The inner side of the protective pad 5 is threaded, which matches the thread on the side of the oil tank opening. This prevents the sharp edges of the clamping slot from scratching the opening when it is held in place, thus avoiding an increase in defective products. This thread-matching design not only provides stable clamping force, ensuring that the oil tank does not shift during processing, but also avoids thread scratches or indentations that may occur when traditional metal clamps directly contact the oil tank opening. In addition, the edges of the protective pad 5 are rounded, further reducing the risk of the sharp edges of the clamping slot scratching the workpiece, thereby significantly reducing the defect rate due to surface damage and improving the production yield.

[0051] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An oil tank vent, characterised in that: The device includes a base, a lifting structure mounted on the base, and an upper clamping mechanism. The lifting structure is equipped with a worktable for supporting the oil tank. The upper clamping mechanism includes a drive component mounted on the side of the base, a mounting block fixed on the base, and a movable block arranged opposite to the mounting block. The mounting block is equipped with a first guide rail, and the movable block slides along the first guide rail. A connecting rod is connected to the side of the movable block away from the mounting block. The movable block is connected to the drive component through the connecting rod, and the drive component is used to drive the movable block to move closer to or away from the mounting block. Both the movable block and the mounting block have slots on opposite sides. The two slots match the fuel tank opening. When the movable block approaches the mounting block, the two slots are used to clamp the fuel tank opening.

2. The oil tank vent of claim 1, wherein: The lifting mechanism includes scissor arms mounted on both sides of the worktable, with the two ends of the scissor arms hinged to the base and the bottom of the worktable, respectively, via hinge shafts.

3. The oil tank vent of claim 2, wherein: The scissor arm includes two cross-hinged rotating links. A first nut seat and a second nut seat are fixedly connected to the bottom of the base and the worktable near the upper clamping mechanism. A first slider and a second slider are provided on the bottom of the base and the worktable away from the upper clamping mechanism. One end of each rotating link is connected to the first nut seat and the second nut seat respectively, and the other end is connected to the first slider and the second slider respectively.

4. The oil tank vent of claim 3, wherein: The lifting assembly also includes a second guide rail and a third guide rail. The two ends of the second guide rail are fixedly connected to the second nut seat and the worktable, respectively. The two ends of the third guide rail are fixedly connected to the first nut seat and the base, respectively. The first slider and the second slider are slidably connected to the second guide rail and the third guide rail, respectively.

5. The oil tank vent of claim 4, wherein: The lifting mechanism also includes a transmission screw connected to the worktable and a wheel that drives the transmission screw to rotate. One end of the transmission screw passes through the second slider and is connected to the second nut seat. The side of the worktable away from the upper clamping mechanism extends downward to form a connecting part, and the wheel is mounted on the connecting part.

6. The fuel tank opening device according to claim 5, characterized in that: The lifting mechanism also includes a hand crank fixedly connected to the wheel, which is used to drive the wheel to rotate.

7. The fuel tank opening device according to claim 6, characterized in that: The roulette wheel has graduated markings.

8. The fuel tank opening device according to claim 1, characterized in that: The mounting block has positioning holes.

9. The fuel tank opening device according to claim 1, characterized in that: The card slot is equipped with a protective pad.

10. The fuel tank opening device according to claim 9, characterized in that: The inner side of the protective pad is threaded, which matches the thread on the side of the tank opening.

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