Double-needle pressure gauge connecting device for electric locomotive

Abstract

The utility model relates to the technical field of pressure gauge connection, and discloses a double-needle pressure gauge connecting device for an electric locomotive, which comprises a connecting block, an input interface fixedly connected to the bottom of the connecting block, an output interface fixedly connected to one side of the top of the connecting block, and an adjusting device fixedly connected to the inner wall of one side of the connecting block. The pressure monitoring and control device is compact and reasonable in structural design, reliable transmission and flexible adjustment of pressure are achieved through reasonable interface design, the adjusting device and sealing measures, the requirements of an electric locomotive for pressure monitoring and control are met, meanwhile, pressure gauges of different specifications can be installed in a matched mode through the adjusting device, and the pressure monitoring and control efficiency is improved. The problems that a pressure gauge connecting device for an electric locomotive is difficult to be compatible with other types of equipment and is difficult to adjust are solved.

Description

Technical Field

[0001] This utility model relates to the field of pressure gauge connection technology, specifically a connection device for a double-needle pressure gauge used in electric locomotives. Background Technology

[0002] During the operation of electric locomotives, pressure monitoring of components such as the hydraulic system or air reservoir is crucial to ensuring driving safety. Therefore, a reliable pressure gauge connection device is needed to ensure accurate transmission and real-time monitoring of pressure data. Dual-needle pressure gauges, due to their ability to simultaneously measure two identical or different pressures, are widely used in electric locomotives. To fully utilize the performance of dual-needle pressure gauges, a matching connection device is required to meet the requirements for accurate measurement and display.

[0003] With the continuous development of electric locomotive technology, interface standardization has become an important trend. The connection device for the double-needle pressure gauge of electric locomotive needs to meet relevant standards to ensure compatibility with double-needle pressure gauges of different models and brands. To this end, we have proposed a connection device for the double-needle pressure gauge of electric locomotive. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a connection device for a double-needle pressure gauge used in electric locomotives, which solves the aforementioned problems.

[0006] (II) Technical Solution

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a connecting device for a double-needle pressure gauge for electric locomotives, comprising a connecting block, an input interface fixedly connected to the bottom of the connecting block, an output interface fixedly connected to one side of the top of the connecting block, a T-tube fixedly connected to one side of the inner wall of the connecting block, a connecting intermediate component fixedly connected to the inner wall of the connecting block away from the T-tube, a retaining ring provided on the outer wall of the connecting intermediate component away from the T-tube, and an adjustment device cooperating with the connecting intermediate component fixedly connected to the inner wall of one side of the connecting block;

[0008] The adjustment device includes a second connecting block, a second retaining ring, a second output pipe, a second fixing ring, a third fastening nut, and a third vent cap. The second connecting block is movably connected to one output end of the connecting intermediate component. The second retaining ring is provided on one output end of the second connecting block, and the retaining ring and the second retaining ring are in a snap-fit ​​engagement. The second output pipe is fixedly connected to the top of the second connecting block. The second fixing ring is fixedly connected to one outer wall of the second output pipe. The third fastening nut is movably connected to the outer wall of the second fixing ring, and the second fixing ring and the third fastening nut are in frictional contact. The third vent cap is fixedly connected to one inner wall of the second output pipe.

[0009] Preferably, the output interface includes an output tube, a fixing ring, a fastening nut, and a vent cap. The output tube is fixedly connected to the top of the connecting block, and the bottom output end of the output tube passes through the inner wall of the connecting block. A fixing ring is fixedly connected to one side of the outer wall of the output tube. A fastening nut is movably connected to the side of the outer wall of the fixing ring, and the fixing ring and the fastening nut are in frictional contact. A vent cap is fixedly connected to one side of the inner wall of the fastening nut.

[0010] Preferably, the input interface includes a connecting pipe, a second fastening nut, and a second vent cap. The connecting pipe is fixedly connected to the bottom of the connecting block, and the top output end of the connecting pipe passes through the bottom of the inner wall of the connecting block. The second fastening nut is movably connected to the outer wall of one side of the connecting pipe, and the second vent cap is fixedly connected to one side of the inner wall of the connecting pipe.

[0011] Preferably, the top output end of the three-way tube is fixedly connected to the bottom output end of the output tube, and the bottom output end of the three-way tube is fixedly connected to the top output end of the connecting tube.

[0012] Preferably, a connecting hose is fixedly connected to one output end of the three-way pipe, and the output end of the connecting hose away from the three-way pipe is fixedly connected to the bottom output end of the second output pipe.

[0013] Preferably, the output tube, the connecting tube, and the output end of the second output tube are all provided with sealing rings.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a connecting device for a double-needle pressure gauge for electric locomotives, which has the following advantages:

[0016] 1. The electric locomotive uses a dual-needle pressure gauge connection device. The device achieves efficient pressure transmission from the input interface to the output interface through a three-way pipe 1, ensuring the accuracy and real-time performance of pressure data.

[0017] 2. The electric locomotive uses a double-needle pressure gauge connection device. The introduction of the adjustment device allows the user to adjust the distance between the second output tube and the output tube as needed, enabling the connection of double-needle pressure gauges of different specifications.

[0018] 3. The electric locomotive uses a dual-needle pressure gauge connection device, and the vent caps installed on each interface and pipeline effectively prevent the accumulation of gas in the pipeline when connecting or disconnecting, reducing potential safety risks. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the present invention;

[0021] Figure 3 This is a side view of the present invention.

[0022] In the diagram: 1. Connecting block; 2. Input interface; 3. Output interface; 4. Adjustment device; 5. Output pipe; 6. Fixing ring; 7. Fastening nut; 8. Vent cap; 9. Connecting pipe; 10. Second fastening nut; 11. Second vent cap; 12. T-connector; 13. Connecting intermediate component; 14. Snap ring; 15. Second connecting block; 16. Second snap ring; 17. Second output pipe; 18. Second fixing ring; 19. Third fastening nut; 20. Third vent cap; 21. Connecting hose. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-3 A connecting device for a dual-needle pressure gauge used in electric locomotives includes a connecting block 1. An input interface 2 is fixedly connected to the bottom of the connecting block 1, and an output interface 3 is fixedly connected to one side of the top of the connecting block 1. A three-way pipe 12 is fixedly connected to one side of the inner wall of the connecting block 1. A connecting intermediate component 13 is fixedly connected to the inner wall of the connecting block 1 away from the three-way pipe 12. A retaining ring 14 is provided on the outer wall of the connecting intermediate component 13 away from the three-way pipe 12. An adjusting device 4 that cooperates with the connecting intermediate component 13 is fixedly connected to one side of the inner wall of the connecting block 1. The connecting block 1 serves as the main body, with an input interface 2 (including a connecting pipe 9, a second fastening nut 10, and a second vent cap 11) at its bottom for connecting to an external pressure source, and an output interface 3 (including an output pipe 5, a fixing ring 6, a fastening nut 7, and a vent cap 8) at its top for connecting to a dual-needle pressure gauge.

[0025] The adjusting device 4 includes a second connecting block 15, a second retaining ring 16, a second output pipe 17, a second fixing ring 18, a third fastening nut 19, and a third vent cap 20. The second connecting block 15 is movably connected to one output end of the connecting intermediate part 13. The second retaining ring 16 is provided on one output end of the second connecting block 15, and the retaining ring 14 and the second retaining ring 16 are in a snap-fit ​​engagement. The second output pipe 17 is fixedly connected to the top of the second connecting block 15. The second fixing ring 18 is fixedly connected to one outer wall of the second output pipe 17. The third fastening nut 19 is movably connected to the outer wall of the second fixing ring 18, and the second fixing ring 18 and the third fastening nut 19 are in frictional contact. The third vent cap 20 is fixedly connected to one inner wall of the second output pipe 17.

[0026] Furthermore, the output interface 3 includes an output tube 5, a fixing ring 6, a fastening nut 7, and a vent cap 8. The top of the connecting block 1 is fixedly connected to the output tube 5, and the bottom output end of the output tube 5 passes through the inner wall of the connecting block 1. The fixing ring 6 is fixedly connected to one side of the outer wall of the output tube 5. The fastening nut 7 is movably connected to the side of the outer wall of the fixing ring 6, and the fixing ring 6 and the fastening nut 7 are in frictional contact. The vent cap 8 is fixedly connected to one side of the inner wall of the fastening nut 7.

[0027] Furthermore, the input interface 2 includes a connecting pipe 9, a second fastening nut 10, and a second vent cap 11. The connecting pipe 9 is fixedly connected to the bottom of the connecting block 1, and the top output end of the connecting pipe 9 passes through the bottom of the inner wall of the connecting block 1. The second fastening nut 10 is movably connected to the outer wall of one side of the connecting pipe 9, and the second vent cap 11 is fixedly connected to one side of the inner wall of the connecting pipe 9.

[0028] Furthermore, the top output end of the three-way tube 12 is fixedly connected to the bottom output end of the output tube 5, and the bottom output end of the three-way tube 12 is fixedly connected to the top output end of the connecting tube 9.

[0029] Furthermore, a connecting hose 21 is fixedly connected to one output end of the three-way pipe 12, and the output end of the connecting hose 21 away from the three-way pipe 12 is fixedly connected to the bottom output end of the second output pipe 17.

[0030] Furthermore, the output ends of output tube 5, connecting tube 9, and second output tube 17 are all equipped with sealing rings to ensure that no leakage occurs during connection and transmission.

[0031] Working principle: The connecting block 1 serves as the main body, with an input interface 2 at its bottom (including a connecting pipe 9, a second fastening nut 10, and a second vent cap 11) for connecting to an external pressure source, and an output interface 3 at its top (including an output pipe 5, a fixing ring 6, a fastening nut 7, and a vent cap 8) for connecting a dual-needle pressure gauge. The input interface 2 and output interface 3 are connected internally by a three-way pipe 12 to transmit pressure. The adjusting device 4 includes a second connecting block 15, a second retaining ring 16, and a second output pipe 17. The spacing between the second output pipe 17 and the output pipe 5 can be adjusted by engaging the retaining ring 14 and the second retaining ring 16. The second output pipe 17 can be further adjusted by adjusting the positions of the second connecting block 15 and the third fastening nut 19. The pressure output enables more precise pressure control. When the external pressure source is connected to the connecting pipe 9, the pressure is transmitted to the output pipe 5 through the three-way pipe 12, and then to the double-needle pressure gauge connected to the output pipe 5. The output ends of the output pipe 5, the connecting pipe 9, and the second output pipe 17 are all equipped with sealing rings to ensure that no leakage occurs during connection and transmission. The vent caps (such as vent cap 8, second vent cap 11, and third vent cap 20) set on each interface and pipeline can ensure that the gas in the pipeline can be smoothly discharged when connected or disconnected, avoiding the danger caused by pressure accumulation. The friction contact design between the fastening nut (such as fastening nut 7, second fastening nut 10, and third fastening nut 19) and the fixing ring can ensure the stability and sealing of the connection.

[0032] 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 connecting device for a dual-needle pressure gauge used in electric locomotives, comprising a connecting block (1), characterized in that: The bottom of the connecting block (1) is fixedly connected to an input interface (2), the top side of the connecting block (1) is fixedly connected to an output interface (3), the inner wall of the connecting block (1) is fixedly connected to a three-way pipe (12), the inner wall of the connecting block (1) away from the three-way pipe (12) is fixedly connected to a connecting intermediate part (13), the outer wall of the connecting intermediate part (13) away from the three-way pipe (12) is provided with a retaining ring (14), and the inner wall of the connecting block (1) is fixedly connected to an adjustment device (4) that cooperates with the connecting intermediate part (13). The adjustment device (4) includes a second connecting block (15), a second retaining ring (16), a second output pipe (17), a second fixing ring (18), a third fastening nut (19), and a third vent cap (20). The output end of one side of the connecting intermediate part (13) is movably connected to the second connecting block (15). The output end of one side of the second connecting block (15) is provided with a second retaining ring (16), and the retaining ring (14) and the second retaining ring (16) are in a snap-fit ​​fit. The top of the second connecting block (15) is fixedly connected to the second output pipe (17). The outer wall of one side of the second output pipe (17) is fixedly connected to the second fixing ring (18). The outer wall of the side of the second fixing ring (18) is movably connected to the third fastening nut (19), and the second fixing ring (18) and the third fastening nut (19) are in frictional contact. The inner wall of the second output pipe (17) is fixedly connected to the third vent cap (20).

2. The connection device for a double-needle pressure gauge for an electric locomotive according to claim 1, characterized in that: The output interface (3) includes an output tube (5), a fixing ring (6), a fastening nut (7), and a vent cap (8). The top of the connecting block (1) is fixedly connected to the output tube (5), and the bottom output end of the output tube (5) passes through the inner wall of the connecting block (1). The outer wall of one side of the output tube (5) is fixedly connected to the fixing ring (6), and the outer wall of the side of the fixing ring (6) is movably connected to the fastening nut (7). The fixing ring (6) and the fastening nut (7) are in frictional contact. The inner wall of the fastening nut (7) is fixedly connected to one side of the vent cap (8).

3. The connection device for a double-needle pressure gauge for an electric locomotive according to claim 1, characterized in that: The input interface (2) includes a connecting pipe (9), a second fastening nut (10), and a second vent cap (11). The bottom of the connecting block (1) is fixedly connected to the connecting pipe (9), and the top output end of the connecting pipe (9) passes through the bottom of the inner wall of the connecting block (1). The outer wall of one side of the connecting pipe (9) is movably connected to the second fastening nut (10), and the inner wall of the connecting pipe (9) is fixedly connected to the second vent cap (11).

4. The connecting device for a double-needle pressure gauge for an electric locomotive according to claim 1, characterized in that: The top output end of the three-way pipe (12) is fixedly connected to the bottom output end of the output pipe (5), and the bottom output end of the three-way pipe (12) is fixedly connected to the top output end of the connecting pipe (9).

5. The connecting device for a double-needle pressure gauge for an electric locomotive according to claim 4, characterized in that: A connecting hose (21) is fixedly connected to one output end of the three-way pipe (12), and the output end of the connecting hose (21) away from the three-way pipe (12) is fixedly connected to the bottom output end of the second output pipe (17).

6. The connecting device for a double-needle pressure gauge for an electric locomotive according to claim 1, characterized in that: The output ends of the output tube (5), the connecting tube (9), and the second output tube (17) are all equipped with sealing rings.

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