A shield machine oil tank filler port end cover assembly

Abstract

The utility model discloses a kind of shield machine oil tank oil filler port end cover assembly, it is related to shield machine oil tank oil filler port end cover technical field, including assembly base, fixedly installed with oil filler pipe in the assembly base, sealing end cover is inserted in the pipe orifice of oil filler pipe, conical part is provided on the sealing end cover, support telescopic sleeve is fixedly installed in the two side surfaces of the inside of assembly base, telescopic rod is slidably connected in support telescopic sleeve, the utility model is always fixed on oil filler pipe by the double cooperation of limiting frame and pressing block, even if operator forgets to insert limiting rod into limiting seat, pressing block will be always kept on oil filler pipe by the elastic force cooperation of reset spring and the guidance of conical part, sealing end cover, solve the problem that the existing oil filler port end cover locking device is not safe, once lock catch falls off, sealing effect will be invalid.

Description

Technical Field

[0001] This utility model relates to the technical field of oil tank filler cap for tunnel boring machines, specifically an oil tank filler cap assembly for tunnel boring machines. Background Technology

[0002] The oil filler cap of the tunnel boring machine (TBM) oil tank is a crucial component for ensuring the quality of the hydraulic system oil. It is generally made of high-strength metal and possesses excellent pressure and impact resistance. The end cap and the oil filler port employ a high-precision sealing design, such as a rubber sealing ring, which effectively prevents the intrusion of impurities such as dust and moisture, thus preventing oil contamination and affecting the normal operation of the TBM. Some oil filler caps are also equipped with locking devices, which not only prevent the end cap from being opened accidentally but also prevent the theft of oil or the malicious addition of foreign objects, greatly improving the safety of equipment operation and laying a solid foundation for the stable operation of the TBM. For example, in the utility model patent with announcement number CN206957406U, a novel simple locking device for a fuel filler cap is disclosed, including a locking plate and a locking plate seat fixed to one side of the fuel tank cap. The top of the locking plate seat has a locking plate seat through groove, and the side wall of the locking plate seat has a first locking plate seat through hole and a second locking plate seat through hole connected to the locking plate seat through groove, which are sequentially opened from bottom to top. By setting the locking plate seat and the locking plate to cooperate, and using a padlock to lock the locking plate and the locking plate seat together, the locking device for the fuel tank cap is completed. The locking effect is good, it is easy to use, the structure is simple, the manufacturing cost is low, and it is suitable for widespread application. However, this type of fuel filler cap locking device has no safety mechanism. Once the lock comes off, the sealing effect will fail. Furthermore, the fuel nozzle needs to be held by hand throughout the refueling process to prevent it from falling off, which is quite labor-intensive. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a shield machine oil tank refueling port end cap assembly, which solves the technical problems of existing devices lacking a safety lock, causing the sealing effect to fail once the lock comes off, and requiring manual support of the oil nozzle throughout the refueling process to prevent it from falling off, resulting in significant manpower consumption.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a shield tunneling machine oil tank filler cap assembly, comprising an assembly base, an oil filling pipe fixedly installed inside the assembly base, a sealing cap inserted into the opening of the oil filling pipe, a conical portion provided on the sealing cap, support telescopic sleeves fixedly installed on both sides inside the assembly base, a telescopic rod slidably connected inside the support telescopic sleeve, a clamping telescopic sleeve fixedly installed at the telescopic end of the telescopic rod, a return spring fitted on the telescopic rod between the clamping telescopic sleeve and the support telescopic sleeve, a clamping fixing frame slidably connected inside the clamping telescopic sleeve, and pressure blocks with two inclined surfaces fixedly connected on both sides inside the clamping fixing frame, one inclined surface of the two pressure blocks fitting against the conical portion.

[0005] Preferably, a slide rail is provided on the inner side of the assembly base, and a guide slider is fixedly installed on the sliding end of the clamping telescopic sleeve. The guide slider is confined within the slide rail and is slidably connected to the slide rail.

[0006] Preferably, the upper wall of the assembly base is provided with a sliding groove, a limiting seat is fixedly installed on the outer side of the clamping telescopic sleeve, a limiting frame is slidably connected in the sliding groove, a limiting rod is fixedly installed on the lower wall of the limiting frame, and the limiting frame can be inserted into the limiting seat through the limiting rod.

[0007] Preferably, the upper wall of the assembly base is provided with a storage groove, and the limiting frame can be inserted into the storage groove through the limiting rod.

[0008] Preferably, a placement block is fixedly installed on the limiting frame, and an auxiliary end cover is fixedly installed on the front wall of the sealing end cover. The auxiliary end cover has an auxiliary groove, and the sealing end cover can be inserted into the placement block through the auxiliary groove.

[0009] Preferably, the insertion end of the sealing end cap has a sealing groove, and a sidewall sealing ring is connected inside the sealing groove.

[0010] Preferably, a front wall sealing ring is fixedly installed at the port of the refueling pipe.

[0011] Beneficial effects This utility model provides a shield machine oil tank filler port end cap assembly, which has the following beneficial effects: By combining the limiting bracket and the pressure block, the sealing end cap is always fixed on the refueling pipe. Even if the operator forgets to insert the limiting rod into the limiting seat, the pressure block will keep the sealing end cap pressed against the refueling pipe by the elastic force of the return spring and the guide of the conical part. This solves the problem that the existing refueling port end cap locking device has no safety and the sealing effect will fail once the lock comes off. The clamping block enables two fixing methods: one with a limiting groove and the other without. When the limiting groove is provided on the oil gun, it can help the operator to fix the oil gun at the filling port of the filling pipe, which greatly saves manpower and solves the problem that the existing filling port end cap requires the oil gun to be held by hand throughout the filling process to prevent the oil gun from falling off, which consumes a lot of manpower. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the closed cover structure of this utility model; Figure 2 This is a schematic diagram of the opening structure of this utility model; Figure 3 This is a schematic diagram of the clamping telescopic sleeve structure of this utility model; Figure 4 This is a schematic diagram of the sealing end cap structure of this utility model; Figure 5 This is a schematic diagram of the clamping and fixing frame structure of this utility model.

[0013] In the diagram: 1. Assembly base; 2. Filler hose; 3. Sealing end cap; 4. Conical part; 5. Support telescopic sleeve; 6. Telescopic rod; 7. Clamping telescopic sleeve; 8. Return spring; 9. Clamping fixing frame; 10. Pressure block; 11. Slide rail; 12. Guide slider; 13. Slide groove; 14. Limit seat; 15. Limit frame; 16. Limit rod; 17. Storage groove; 18. Placement block; 19. Auxiliary end cap; 20. Auxiliary groove; 21. Sealing groove; 22. Side wall sealing ring; 23. Front wall sealing ring. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0015] Please see Figures 1-5 A shield tunneling machine fuel tank filler cap assembly includes an assembly base 1. A fuel filler pipe 2 is fixedly installed inside the assembly base 1. A sealing end cap 3 is inserted into the opening of the fuel filler pipe 2. A conical portion 4 is provided on the sealing end cap 3. Support telescopic sleeves 5 are fixedly installed on both sides inside the assembly base 1. A telescopic rod 6 is slidably connected inside the support telescopic sleeve 5. A clamping telescopic sleeve 7 is fixedly installed at the telescopic end of the telescopic rod 6. A return spring 8 fitted on the telescopic rod 6 is provided between the clamping telescopic sleeve 7 and the support telescopic sleeve 5. A clamping fixing frame 9 is slidably connected inside the clamping telescopic sleeve 7. Two pressure blocks 10 with two inclined surfaces are fixedly connected to both sides inside the clamping fixing frame 9. One inclined surface of the two pressure blocks 10 is in contact with the conical portion 4.

[0016] Please see Figure 3The assembly base 1 has a slide rail 11 on its inner side. The sliding end of the clamping telescopic sleeve 7 is fixedly installed with a guide slider 12. The guide slider 12 is confined within the slide rail 11 and is slidably connected to the slide rail 11.

[0017] Please see Figure 2 The upper wall of the assembly base 1 is provided with a sliding groove 13. A limiting seat 14 is fixedly installed on the outer side of the clamping telescopic sleeve 7. A limiting frame 15 is slidably connected in the sliding groove 13. A limiting rod 16 is fixedly installed on the lower wall of the limiting frame 15. The limiting frame 15 can be inserted into the limiting seat 14 through the limiting rod 16.

[0018] Please see Figure 2 The upper wall of the assembly base 1 is provided with a storage groove 17, and the limiting frame 15 can be inserted into the storage groove 17 through the limiting rod 16.

[0019] Please see Figure 2 The limiting frame 15 is fixedly installed with a placement block 18, and the front wall of the sealing end cover 3 is fixedly installed with an auxiliary end cover 19. The auxiliary end cover 19 has an auxiliary groove 20, and the sealing end cover 3 can be inserted into the placement block 18 through the auxiliary groove 20.

[0020] Please see Figure 4 The sealing end cap 3 has a sealing groove 21 at its insertion end, and a side wall sealing ring 22 is connected inside the sealing groove 21. In use, the side wall sealing ring 22 increases the side wall sealing performance.

[0021] Please see Figure 2 A front wall sealing ring 23 is fixedly installed at the port of the refueling pipe 2. During use, the front wall sealing ring 23 increases the front wall sealing performance.

[0022] In Example 1, the sealing end cap 3 is always fixed on the refueling pipe 2 through the double cooperation of the limiting frame 15 and the pressure block 10. Even if the operator forgets to insert the limiting rod 16 into the limiting seat 14, the pressure block 10 will keep the sealing end cap 3 pressed against the refueling pipe 2 by the elastic force of the return spring 8 and the conical part 4.

[0023] Specifically, when the oil gun does not have a limiting groove, the operator pulls out the limiting bracket 15 along the slide groove 13, and then inserts the limiting rod 16 into the storage groove 17. At this time, the lateral limiting of the clamping telescopic sleeve 7 is released. Then, the operator holds the clamping fixing bracket 9 with both hands and slowly pushes it towards the storage groove 17. During the pushing process, the clamping fixing bracket 9 drives the pressure blocks 10 on both sides inside to slide along the conical part 4 of the sealing end cover 3 (the conical part 4 has a trapezoidal cross section to provide sliding guidance). At the same time, the pressure blocks 10 drive the clamping telescopic sleeve 7 to move through the clamping fixing bracket 9. The guide slider 12 of the sliding end of the clamping telescopic sleeve 7 slides synchronously along the slide rail 11 on the inner side of the assembly base 1 to prevent the clamping telescopic sleeve 7 from shifting. At the same time, the clamping telescopic sleeve 7 compresses the return spring 8 on the telescopic rod 6, and the telescopic rod 6 retracts into the supporting telescopic sleeve 5 until the pressure block 10 completely disengages from the conical part 4 and presses against the outer wall of the oil filling pipe 2. At this point, the clamping limit of the sealing end cap 3 is completely released. The operator holds the auxiliary end cap 19 on the front wall of the sealing end cap 3 and pulls the sealing end cap 3 outward along the axial direction of the refueling pipe 2. The side wall sealing ring 22 in the sealing groove 21 of the insertion end of the sealing end cap 3 is separated from the inner wall of the refueling pipe 2, and the front wall sealing ring 23 (at the end of the refueling pipe 2) is also simultaneously separated from the sealing end cap 3. The pulled-out sealing end cap 3 is aligned with the placement block 18 on the limit frame 15 through the auxiliary groove 20 of the auxiliary end cap 19 and inserted downward so that the placement block 18 is completely inserted into the auxiliary groove 20, thus completing the temporary storage of the sealing end cap 3 (to avoid the end cap being lost or contaminated with oil by random placement).

[0024] When refueling, align the oil gun with the infinity groove at the opening of the refueling pipe 2 and slowly insert it until the oil gun head is in contact with the sealing ring 23 on the front wall of the refueling pipe 2 port. During the refueling process, the operator can gently hold the oil gun to prevent it from shaking. At the same time, observe the storage status of the sealing end cap 3 to ensure that it is stably locked on the placement block 18. After refueling, first pull out the oil gun, then hold the auxiliary end cap 19 to remove the sealing end cap 3. In the opposite direction, drag the clamping and telescopic sleeve 7 along the clamping and fixing frame 9 to the maximum stroke value. At the same time, the pressure block 10 slides along the conical part 4, and cooperates with the conical part 4 to generate a component force in the direction of the guide slider 12, keeping the sealing end cap 3 pressed against the refueling pipe 2.

[0025] Example 2: In this example, the pressure block 10 enables two fixing methods: one with a limiting groove and the other without. When the limiting groove is provided on the oil gun, it can help the operator to restrict the oil gun to the filling port of the filling pipe 2, which greatly saves manpower.

[0026] Specifically, following the same steps as in Embodiment 1, the lateral limit of the clamping telescopic sleeve 7 is released; then, without pushing the clamping fixing frame 9, directly grasp the auxiliary end cap 19 of the sealing end cap 3 and pull it outward along the axial direction of the refueling pipe 2. During the pulling process, the conical part 4 of the sealing end cap 3 presses against the pressure blocks 10 on both sides, causing the clamping fixing frame 9 to slide outward, while simultaneously compressing the return spring 8 and the telescopic rod 6 to retract; when the sealing end cap 3 is completely detached from the refueling pipe 2, the pressure block 10 loses the pressing effect of the conical part 4, the return spring 8 releases its elasticity, and pushes the telescopic rod 6 to extend along the supporting telescopic sleeve 5. The telescopic rod 6 drives the clamping telescopic sleeve 7 and the clamping fixing frame 9 to reset synchronously, and finally the pressure block 10 returns to its initial position (flush with the end of the refueling pipe 2). Align the oil gun with the limiting groove with the inlet of the refueling pipe 2 and slowly insert it. During the continuous insertion of the oil gun, its outer wall presses against the pressure blocks 10 on both sides. The pressure blocks 10 slide along the outer wall of the oil gun, and at the same time, the clamping and fixing bracket 9 drives the clamping telescopic sleeve 7 to move outward. The telescopic rod 6 retracts and the return spring 8 is compressed. When the limiting groove of the oil gun moves to be aligned with the pressure block 10, the elastic force of the return spring 8 pushes the telescopic rod 6 to extend, driving the pressure block 10 to move towards the oil gun. Finally, the inner end of the pressure block 10 is completely stuck in the limiting groove of the oil gun. At this time, the oil gun is temporarily fixed and cannot shake axially, avoiding displacement of the oil gun during refueling and causing oil leakage. After confirming that the oil gun is fixed and stable, start the refueling equipment to start refueling. After refueling, hold the fuel nozzle and pull it outwards. The fuel nozzle limiting groove will squeeze the pressure block 10, causing it to disengage from the limiting groove. Continue pulling the fuel nozzle until it is completely pulled out. The pressure block 10 will reset under the action of the return spring 8. Then, insert the sealing end cap 3 in the reverse order (ensuring that the side wall sealing ring 22 is completely in contact with the inner wall of the refueling pipe 2 and the front wall sealing ring 23 is in contact with the sealing end cap 3). Pull the limiting rod 16 of the limiting frame 15 out of the storage groove 17 and reinsert it into the limiting seat 14 to restore the clamping structure limit and complete all operations.

[0027] 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 shield tunneling machine oil tank filler port end cap assembly, characterized in that, The assembly includes a base (1), in which a filler pipe (2) is fixedly installed. A sealing end cap (3) is inserted into the opening of the filler pipe (2). A conical part (4) is provided on the sealing end cap (3). Support telescopic sleeves (5) are fixedly installed on both sides inside the base (1). A telescopic rod (6) is slidably connected inside the support telescopic sleeve (5). A clamping telescopic sleeve (7) is fixedly installed at the telescopic end of the telescopic rod (6). A return spring (8) fitted on the telescopic rod (6) is provided between the clamping telescopic sleeve (7) and the support telescopic sleeve (5). A clamping fixing frame (9) is slidably connected inside the clamping telescopic sleeve (7). Two pressure blocks (10) with two inclined surfaces are fixedly connected on both sides inside the clamping fixing frame (9). One inclined surface of the two pressure blocks (10) is in contact with the conical part (4).

2. The shield machine oil tank filler port end cap assembly according to claim 1, characterized in that, The inner side of the assembly base (1) is provided with a slide (11), and the sliding end of the clamping telescopic sleeve (7) is fixedly installed with a guide slider (12). The guide slider (12) is restricted in the slide (11) and is slidably connected to the slide (11).

3. The shield machine oil tank filler port end cap assembly according to claim 1, characterized in that, The upper wall of the assembly base (1) is provided with a sliding groove (13), a limiting seat (14) is fixedly installed on the outer side of the clamping telescopic sleeve (7), a limiting frame (15) is slidably connected in the sliding groove (13), a limiting rod (16) is fixedly installed on the lower wall of the limiting frame (15), and the limiting frame (15) can be inserted into the limiting seat (14) through the limiting rod (16).

4. The shield machine oil tank filler port end cap assembly according to claim 3, characterized in that, The upper wall of the assembly base (1) is provided with a storage groove (17), and the limiting frame (15) can be inserted into the storage groove (17) through the limiting rod (16).

5. The shield machine oil tank filler port end cap assembly according to claim 3, characterized in that, The limiting frame (15) is fixedly installed with a placement block (18), and the front wall of the sealing end cover (3) is fixedly installed with an auxiliary end cover (19). The auxiliary end cover (19) has an auxiliary groove (20), and the sealing end cover (3) can be inserted into the placement block (18) through the auxiliary groove (20).

6. The shield machine oil tank filler port end cap assembly according to claim 5, characterized in that, The sealing end cap (3) has a sealing groove (21) at the insertion end, and a side wall sealing ring (22) is connected inside the sealing groove (21).

7. The shield machine oil tank filler port end cap assembly according to claim 1, characterized in that, A front wall sealing ring (23) is fixedly installed at the port of the refueling pipe (2).

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