Novel special tool for static test of refueling bolt

Abstract

The utility model discloses a novel special tool for a static test of a refueling bolt, which comprises a fixed rod, and one end of the fixed rod is fixedly connected with a positioning seat frame; a testing mechanism is arranged on the positioning seat frame and comprises a positioning seat arranged at the bottom end of the positioning seat frame; the acrylic cover is arranged outside the fixed rod in a sleeving manner; and the extrusion assembly is arranged in the fixing rod. The arrangement mode that the positioning seat, the acrylic cover and the extrusion assembly are matched is utilized, the positioning seat is horizontally placed on the end face of the head of the refueling bolt and transversely moves towards the center in the side direction, the positioning seat can be easily inserted into a positioning groove in the head of the refueling bolt, and at the moment, the extrusion assembly is automatically aligned with a pressure relief valve on the head of the refueling bolt; the pressure relief valve at the head of the refueling bolt can be opened only by pressing down the extrusion rod, and observation is performed through the spherical transparent acrylic cover, so that oil cannot leak out and is prevented from being splashed on the body, meanwhile, the safety of observers is guaranteed, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field related to the testing of fuel fillers, and particularly relates to a special tool for static testing of a new type of fuel filler. Background Art

[0002] The safety inspection of fuel fillers in the apron fuel pipeline system is a key process during airport construction. It mainly checks whether the sealing components such as gaskets and sealing rings of the fuel fillers are intact, ensuring no leakage during the refueling process, which is one of the key points in airport acceptance.

[0003] To ensure the reliability of fuel filler use, maintenance personnel need to regularly check the piston seal of the fuel filler. Currently, there is no dedicated testing tool for the static testing of fuel fillers during daily maintenance. It can only rely on manual observation. By observing the oil output after pressing the valve well, its health status is judged. This not only easily dirties hands during pressing but also may pose a danger to the observers, which is rather inconvenient. Content of the Utility Model

[0004] The purpose of the utility model is to provide a special tool for static testing of a new type of fuel filler to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A special tool for static testing of a new type of fuel filler, including a fixed rod, and one end of the fixed rod is fixedly connected with a positioning seat frame;

[0006] A testing mechanism is arranged on the positioning seat frame, and the testing mechanism includes:

[0007] A positioning seat, the positioning seat is arranged at the bottom end of the positioning seat frame, a sliding groove is opened at the bottom end of the positioning seat, and a clamping groove communicating with the sliding groove is opened at the top end of the positioning seat, and the clamping groove is used for clamping with the fuel filler;

[0008] An acrylic cover, the acrylic cover is sleeved outside the fixed rod, a circular groove is opened at the top end of the positioning seat, and the acrylic cover is slidably inserted into the inner cavity of the circular groove;

[0009] An extrusion assembly is arranged inside the fixed rod.

[0010] Preferably, the extrusion assembly includes;

[0011] An extrusion rod, the extrusion rod is slidably inserted into the inner cavity of the fixed rod;

[0012] A limiting plate, the limiting plate is located inside the fixed rod, and the limiting plate is fixedly inserted and connected with the extrusion rod;

[0013] Spring cap seal, the spring cap seal is threadedly inserted into the inner cavity of the fixed rod;

[0014] Compression spring, the compression spring is sleeved on the outside of the extrusion rod.

[0015] Preferably, one end of the compression spring is fixedly connected to the limit plate, and the other end of the compression spring is fixedly connected to the bottom end of the inner wall of the fixed rod.

[0016] Preferably, a plurality of counterbores are equidistantly arranged at the top end of the inner wall of the chute, a bolt is slidably inserted into the inner cavity of the counterbore, a plurality of mounting holes are equidistantly arranged at the bottom end of the positioning seat frame, and the bolt passes through the counterbore and is threadedly inserted into the inner cavity of the mounting hole.

[0017] Preferably, an external thread is provided on the outer wall of the fixed rod, and a fixing cap is threadedly inserted on the outer wall of the fixed rod for fixing the acrylic cover.

[0018] Preferably, a copper insert is fixedly connected to the bottom end of the extrusion rod for contacting the oil fluid.

[0019] Preferably, a handle is fixedly connected to the top end of the extrusion rod, anti-slip textures are provided on the outer wall of the handle, and a plurality of grips are fixedly connected to the outer wall of the fixed rod, and the plurality of grips are symmetrically arranged with the fixed rod as the center.

[0020] Technical effects and advantages of the present utility model:

[0021] With the cooperation of the positioning seat, the acrylic cover and the extrusion assembly in the present utility model, by placing the positioning seat flat on the end face of the fuel filler plug head and laterally moving it towards the center, it can be easily inserted into the positioning groove of the fuel filler plug head, and it can be firmly held together with the fuel filler plug like a claw-type joint using the claw pieces. At this time, the extrusion assembly is automatically aligned with the pressure relief valve of the fuel filler plug head. As long as the extrusion rod is pressed down, the pressure relief valve of the fuel filler plug head can be opened, and through the spherical transparent acrylic cover for observation, not only will the oil fluid not leak out and prevent splashing on the body, but also the safety of the observers is ensured, which is convenient for use. Description of the drawings

[0022] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0023] Figure 2 It is a schematic diagram of the overall front internal structure of the present utility model.

[0024] Figure 3 It is a schematic diagram of the front internal structure at the acrylic cover of the present utility model.

[0025] Figure 4 It is a schematic diagram of the front internal structure at the extrusion assembly of the present utility model.

[0026] In the figure: 1. Fixed rod; 2. Positioning seat frame; 3. Testing mechanism; 31. Positioning seat; 32. Acrylic cover; 33. Extrusion assembly; 331. Extrusion rod; 332. Limiting plate; 333. Spring cap seal; 334. Compression spring; 4. Bolt; 5. Fixed cap; 6. Copper insert; 7. Handle; 8. Grip. Specific implementation mode

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] The present invention provides a Figures 1-4 novel special tool for static testing of fuel filling plugs as shown, including a fixed rod 1, and one end of the fixed rod 1 is fixedly connected with a positioning seat frame 2;

[0029] Furthermore, a testing mechanism 3 is arranged on the positioning seat frame 2. The testing mechanism 3 includes: a positioning seat 31, an acrylic cover 32 and an extrusion assembly 33. The positioning seat 31 is arranged at the bottom end of the positioning seat frame 2. A chute is opened at the bottom end of the positioning seat 31. The chute facilitates the positioning seat 31 to be horizontally stuck in the positioning groove at the head of the fuel filling plug. A clamping groove communicated with the chute is opened at the top end of the positioning seat 31. The clamping groove is used for clamping with the fuel filling plug. When the clamping groove is clamped with the fuel filling plug, it can be like a claw-type joint that firmly holds the fuel filling plug together with the claw pieces, so that the extrusion assembly 33 is automatically aligned with the pressure relief valve at the head of the fuel filling plug; the acrylic cover 32 is sleeved outside the fixed rod 1. An annular groove is opened at the top end of the positioning seat 31. The acrylic cover 32 is slidably inserted into the inner cavity of the annular groove. The acrylic cover 32 is not only transparent and convenient for the observer to observe the sealing state of the fuel filling plug, but also can protect the observer from splashing oil on the body; the extrusion assembly 33 is arranged inside the fixed rod 1 and is used for pressing the pressure relief valve at the head of the fuel filling plug.

[0030] Specifically, the extrusion assembly 33 includes an extrusion rod 331, a limiting plate 332, a spring cap seal 333, and a compression spring 334. The extrusion rod 331 is slidably inserted into the inner cavity of the fixed rod 1, and the extrusion rod 331 can be pressed down and positioned by the clamping groove. The limiting plate 332 is located inside the fixed rod 1, and the limiting plate 332 is fixedly inserted through the extrusion rod 331. The spring cap seal 333 is threadedly inserted into the inner cavity of the fixed rod 1. The compression spring 334 is sleeved outside the extrusion rod 331. One end of the compression spring 334 is fixedly connected to the limiting plate 332, and the other end of the compression spring 334 is fixedly connected to the bottom end of the inner wall of the fixed rod 1. The compression spring 334 is always in a compressed state, so that a stable elastic force can be provided to the extrusion rod 331 through the limiting plate 332. Thus, when the tester checks the sealing performance, only by pressing down the extrusion rod 331 can the pressure relief valve of the fuel filler cap be opened, and observation can be carried out through the spherical transparent acrylic cover 32. After the observation is completed, releasing the pressed extrusion rod 331 can reset it under the elastic force of the compression spring 334 to wait for the next extrusion.

[0031] Further, a plurality of counterbores are equidistantly arranged at the top end of the inner wall of the chute. A bolt 4 is slidably inserted through the inner cavity of the counterbore. A plurality of mounting holes are equidistantly arranged at the bottom end of the positioning seat frame 2. The bolt 4 passes through the counterbore and is threadedly inserted through the inner cavity of the mounting hole. A cross groove is provided at the bottom end of the bolt 4, which is convenient for disassembly by disassembly tools such as a screwdriver.

[0032] Further, an external thread is provided on the outer wall of the fixed rod 1. A fixing cap 5 is threadedly inserted through the outer wall of the fixed rod 1 for fixing the acrylic cover 32. The setting of the fixing cap 5 facilitates limiting the acrylic cover 32 inside the annular groove provided in the positioning seat 31, enabling the acrylic cover 32 to form a relatively enclosed environment for easy observation. Not only will the oil not leak out and splash onto the body, but it also ensures the safety of the observers and is convenient for use.

[0033] Further, a copper insert 6 is fixedly connected to the bottom end of the extrusion rod 331 for contacting the oil and can play a role in conducting electricity to ensure the safety of the fuel filler during the test.

[0034] Further, a handle 7 is fixedly connected to the top end of the extrusion rod 331. Anti-slip textures are provided on the outer wall of the handle 7. A plurality of grips 8 are fixedly connected to the outer wall of the fixed rod 1. The plurality of grips 8 are symmetrically arranged with the fixed rod 1 as the center, increasing the friction with the palm, making it difficult to slip when holding the handle 7, thereby improving the stability and safety of the operation. The setting of the grips 8 facilitates better exertion of force when pressing down the extrusion rod 331 through the handle 7 and is convenient for use.

[0035] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A new type of special tool for static testing of fuel hydrants, including: A fixing rod (1), one end of which is fixedly connected to a positioning seat frame (2); The feature is that a testing mechanism (3) is provided on the positioning frame (2), and the testing mechanism (3) comprises: A positioning seat (31), the positioning seat (31) is arranged at the bottom end of the positioning seat frame (2), a slide groove is provided at the bottom end of the positioning seat (31), and a clamping groove communicating with the slide groove is provided at the top end of the positioning seat (31), and the clamping groove is used for clamping with the refueling plug; An acrylic cover (32), wherein the acrylic cover (32) is sleeved on the outside of the fixing rod (1), an annular groove is formed on the top of the positioning seat (31), and the acrylic cover (32) is slidably connected with the inner cavity of the annular groove; An extrusion assembly (33), wherein the extrusion assembly (33) is arranged inside the fixing rod (1).

2. A new type of special tool for static testing of fuel hydrants according to claim 1, characterized in that: The extrusion assembly (33) comprises: An extrusion rod (331), the extrusion rod (331) is slidably connected to the inner cavity of the fixing rod (1); A limiting plate (332), the limiting plate (332) being located inside the fixing rod (1), the limiting plate (332) being fixedly interpenetratingly connected with the extrusion rod (331); A spring cap seal (333), wherein the spring cap seal (333) is threadably connected to the inner cavity of the fixing rod (1); A compression spring (334), wherein the compression spring (334) is sleeved on the outside of the extrusion rod (331).

3. A new type of special tool for static testing of fuel hydrants according to claim 2, characterized in that: One end of the compression spring (334) is fixedly connected to the limiting plate (332), and the other end of the compression spring (334) is fixedly connected to the bottom end of the inner wall of the fixing rod (1).

4. The new type of static test tool for fuel hydrants according to claim 1 is characterized in that: The top end of the inner wall of the slide groove is provided with a plurality of countersunk holes at equal intervals, and the inner cavity of the countersunk holes is slidably inserted with bolts (4). The bottom end of the positioning seat frame (2) is provided with a plurality of mounting holes at equal intervals, and the bolts (4) pass through the countersunk holes and are threadedly inserted into the inner cavity of the mounting holes.

5. The new type of static test tool for fuel hydrants according to claim 1 is characterized in that: The outer wall of the fixing rod (1) is provided with an external thread, and a fixing cap (5) is inserted and connected through the thread of the outer wall of the fixing rod (1) for fixing the acrylic cover (32).

6. A new type of special tool for static testing of fuel hydrants according to claim 2, characterized in that: The bottom end of the extrusion rod (331) is fixedly connected with a copper insert (6) for contacting with oil.

7. The new type of static test tool for fuel hydrants according to claim 2 is characterized in that: The top end of the extrusion rod (331) is fixedly connected to a handle (7), the outer wall of the handle (7) is provided with an anti-slip texture, and the outer wall of the fixed rod (1) is fixedly connected to a plurality of grips (8), the plurality of grips (8) are symmetrically arranged with the fixed rod (1) as the center.

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