Portable normal pressure tank car safety accessory verification equipment

Abstract

The utility model relates to the technical field of tank car safety verification, and discloses a portable normal pressure tank car safety accessory verification device comprising a box body, an operation table embedded in the box body, a test bench embedded in the operation table, a positive and negative pressure gauge embedded in the operation table, a precision pressure gauge embedded in the operation table, and an external pressure gauge embedded in the operation table. A knob is arranged on the upper portion of the operation table, a rotating rod is arranged on the lower portion of the knob, the rotating rod rotationally penetrates into the operation table, and a connecting table is fixedly connected to the lower surface of the knob. The situation that the rotary knob rotates due to the fact that the rotary knob is touched carelessly when the device is not adjusted is avoided as much as possible, so that the stability and the adjusting precision of the rotating rod are guaranteed, the effect that the rotating rod cannot be operated to rotate when a worker does not lift the rotary knob upwards is achieved, and the practicability of the device is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tank truck safety verification, in particular to portable normal pressure tank truck safety accessory verification equipment. Background Art

[0002] The portable atmospheric pressure tank truck safety accessories calibration equipment can calibrate the safety valve, breathing valve, and emergency relief device of road transport liquid dangerous goods tank vehicles. It can be carried with the vehicle and used during inspection. It is portable and can be carried with the vehicle for easy inspection. It has many functions and integrates the functions of calibrating the breathing valve, safety valve, vacuum valve, and emergency relief device of atmospheric pressure tank trucks. It has a simple structure and is easy to operate.

[0003] However, some existing portable atmospheric pressure tank truck safety accessory calibration devices may cause the knob to rotate when used due to operator error, which in turn may lead to data errors during subsequent calibration. In actual use, they have certain limitations, greatly affecting the subsequent calibration efficiency, inconvenient operation, and low practicality. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a portable atmospheric pressure tank truck safety accessory calibration device to solve the problems raised in the above background technology.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a portable atmospheric pressure tank truck safety accessory calibration device comprises a box body, an operating table is embedded and installed inside the box body, a test bench is embedded and installed inside the operating table, positive and negative pressure gauges, a precision pressure gauge and an external pressure gauge are embedded and installed inside the operating table, a knob is provided on the upper part of the operating table, a rotating rod is provided on the lower part of the knob, the rotating rod rotates and passes through the interior of the operating table, the lower surface of the knob is fixedly connected to a connecting table, the connecting table is a frustum, which includes an inclined surface and a vertical surface, a cavity is provided inside the connecting table, the connecting table is slidably sleeved on the outside of the rotating rod, the upper end of the rotating rod is fixedly connected to a circular plate, the bottom wall of the cavity is fixedly connected to a first tooth, the lower surface of the circular plate is fixedly connected to a second tooth, the upper surface of the circular plate is rotatably sleeved with a second rotating table, the top wall of the cavity is rotatably sleeved with the first rotating table, a first spring is fixedly connected between the first rotating table and the second rotating table, a sliding groove is provided on the upper surface of the operating table, the sliding grooves are located on both sides of the rotating rod, and a clamping assembly is provided inside the sliding groove.

[0008] Preferably, the clamping assembly includes an L-shaped fixing rod, which is slidably connected to the inside of the sliding groove. The L-shaped fixing rod includes a horizontal rod and a vertical rod. The horizontal rod is fixedly connected to the upper part of the vertical rod, and the fixing rod is fixedly connected to the inside of the sliding groove.

[0009] Preferably, the L-shaped fixing rod is slidably sleeved on the outside of the fixing rod, and the cross bar of the L-shaped fixing rod is fixedly connected to the driving half ring.

[0010] Preferably, a second spring is fixedly connected between the vertical rod of the L-shaped fixing rod and the inner wall of the sliding groove, and the second spring is sleeved on the outside of the fixing rod.

[0011] Preferably, the vertical rod of the L-shaped fixing rod is fixedly connected to a connecting rod, and the adjacent ends of the two connecting rods are fixedly connected to a friction ring.

[0012] Preferably, the inner diameter of the driving half ring is matched with the diameter of the vertical surface of the connecting platform, and the inner diameter of the friction ring is matched with the diameter of the rotating rod.

[0013] Preferably, a vent is provided on the upper surface of the operating table, a vertical plate is fixedly connected to the upper surface of the operating table, and a connecting plate is rotatably connected between the two vertical plates via an axle.

[0014] Preferably, a collar is fixedly connected to the outer surface of the connecting plate, and a sealing cover is threadedly sleeved on the inner thread of the collar, and the sealing cover is threadedly sleeved on the outer surface of the vent.

[0015] (3) Beneficial effects

[0016] Compared with the existing technology, the utility model provides a portable atmospheric pressure tank truck safety accessory calibration device, which has the following beneficial effects:

[0017] 1. This portable atmospheric pressure tank truck safety accessory calibration device can adjust the numerical value and other parameters of the calibration device by pulling the knob upward, thus avoiding as much as possible the situation where the device rotates due to accidental touching of the knob when not adjusted, thereby ensuring the stability of the rotating rod and the accuracy of adjustment, and achieving the goal that the rotating rod cannot be operated to rotate when the staff does not pull the knob upward, greatly improving the practicality of the device.

[0018] 2. This portable atmospheric pressure tank truck safety accessory calibration device further ensures the stability of the rotating rod itself through the setting of the clamping assembly, improving the practicality of the device. No additional operation is required by the staff. When the knob is reset, the friction ring automatically presses against the rotating rod, reducing the number of operating steps for the staff and simplifying the operation.

[0019] 3. The portable atmospheric pressure tank truck safety accessory calibration equipment prevents external debris from entering the interior of the vent through the setting of the sealing cover, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the portable atmospheric pressure tank truck safety accessory calibration device of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the knob of the utility model;

[0022] Figure 3 This is a schematic cross-sectional view of the connecting platform of the present invention;

[0023] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0024] Figure 5 for Figure 1 Enlarged view of point B in the middle;

[0025] Figure 6 It is a schematic cross-sectional structural diagram of the sealing cover of the present invention.

[0026] In the figure: 1. Box body; 2. Operating table; 3. Test bench; 4. Positive and negative pressure gauges; 5. Precision pressure gauge; 6. External pressure gauge; 7. Knob; 8. Rotating rod; 9. Connecting platform; 10. Cavity; 11. Circular plate; 12. First tooth; 13. Second tooth; 14. First rotating platform; 15. Second rotating platform; 16. First spring; 17. Sliding groove; 18. L-shaped fixing rod; 19. Driving half ring; 20. Fixing rod; 21. Second spring; 22. Connecting rod; 23. Friction ring; 24. Vent; 25. Vertical plate; 26. Connecting plate; 27. Ring; 28. Sealing cover. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figures 1-6The utility model provides a technical solution: a portable atmospheric tank truck safety accessory calibration device, including a box body 1, an operating table 2 is embedded in the interior of the box body 1, a test bench 3 is embedded in the interior of the operating table 2, the test bench 3 is an existing structure, and its function is to connect the external breathing valve, so it is no longer described in the text, the interior of the operating table 2 is embedded with a positive and negative pressure gauge 4, a precision pressure gauge 5 and an external pressure gauge 6, wherein the positive and negative pressure gauge 4, the precision pressure gauge 5 and the external pressure gauge 6 are all existing structures, so they are no longer described in the text, a plurality of operating knobs are provided on the surface of the operating table 2, including a positive and negative pressure gauge switch, a precision pressure gauge switch, an external pressure gauge switch, a pressure relief switch, etc., which are existing structures, so they are no longer described in the text, the operating knobs The upper part of the table 2 is provided with a knob 7, and the lower part of the knob 7 is provided with a rotating rod 8. The rotating rod 8 rotates and penetrates into the interior of the operating table 2. The lower surface of the knob 7 is fixedly connected to a connecting table 9. The connecting table 9 is a frustum, which includes an inclined surface and a vertical surface. A cavity 10 is opened inside the connecting table 9. The connecting table 9 is slidably sleeved on the outside of the rotating rod 8. The upper end of the rotating rod 8 is fixedly connected to a circular plate 11. The bottom wall of the cavity 10 is fixedly connected to a first tooth 12. The lower surface of the circular plate 11 is fixedly connected to a second tooth 13. The upper surface of the circular plate 11 is rotatably sleeved with a second rotating table 15. The top wall of the cavity 10 is rotatably sleeved with a first rotating table 14. A first spring 16 is fixedly connected between the first rotating table 14 and the second rotating table 15. The upper surface of the operating table 2 A sliding groove 17 is provided on the surface, and the sliding groove 17 is located on both sides of the rotating rod 8. A clamping assembly is provided inside the sliding groove 17. When the staff uses the device, they first pull the knob 7 upward to drive the connecting platform 9 to move upward by moving the knob 7. At this time, because the position of the rotating rod 8 is fixed, the first teeth 12 on the bottom wall of the cavity 10 will engage with the second teeth 13 on the surface of the circular plate 11. At this time, the first spring 16 will be in a stretched state. When the first teeth 12 and the second teeth 13 are engaged, the staff turns the knob 7 to drive the rotation of the rotating rod 8, so that the numerical value and other parameters of the calibration device can be adjusted. At the same time, when the staff pulls the knob 7 upward, the connecting platform 9 will move synchronously, so that the clamping assembly will produce movement. When the operator does not need to rotate the rotating rod 8, the knob 7 is released. At this time, the first spring 16 resets the connecting platform 9, so that the first tooth 12 and the second tooth 13 are disengaged, and the clamping assembly clamps the rotating rod 8. The subsequent operator cannot drive the rotating rod 8 to rotate when turning the knob 7, and the setting of the clamping assembly also ensures that the rotating rod 8 does not rotate. The above structure avoids as much as possible the situation that the knob 7 rotates due to accidental touching of the knob 7 when the device is not adjusted, thereby ensuring the stability of the rotating rod 8 and the accuracy of adjustment, and achieving the situation that the rotating rod 8 cannot be operated to rotate when the operator does not pull the knob 7 upwards, thereby greatly improving the practicality of the device.

[0029] The L-shaped fixing rod 18 is fixedly connected to the inner wall of the sliding groove 17 of the L-shaped fixing rod 18, and the L-shaped fixing rod 18 is fixedly connected to the upper part of the vertical rod. The inner wall of the sliding groove 17 is fixedly connected to the fixing rod 20, and the L-shaped fixing rod 18 is slidably sleeved on the outer side of the fixing rod 20. The cross bar of the L-shaped fixing rod 18 is fixedly connected to a driving half ring 19, and the inner diameter of the driving half ring 19 is adapted to the diameter of the vertical surface of the connecting platform 9. A second spring 21 is fixedly connected between the vertical rod of the L-shaped fixing rod 18 and the inner wall of the sliding groove 17. The second spring 21 is sleeved on the outer side of the fixing rod 20, and the vertical rod of the L-shaped fixing rod 18 is fixedly connected to a connecting rod 22. The two connecting rods 22 are fixedly connected to a friction ring 23 at one end thereof. The inner wall of the friction ring 23 is provided with a protrusion for increasing friction. The inner diameter of the friction ring 23 is adapted to the diameter of the rotating rod 8. When the staff does not lift the knob 7 upward, this When the first tooth 12 and the second tooth 13 are engaged, the driving half ring 19 will be covered on the vertical surface of the connecting platform 9. At this time, the L-shaped fixing rod 18 will also move to both sides, and the second spring 21 will be deformed. The movement of the L-shaped fixing rod 18 will drive the movement of the fixing rod 20, and then drive the friction ring 23 to move to both sides and disengage from the rotating rod 8. The setting of the clamping assembly further ensures the stability of the rotating rod 8 itself, improves the practicality of the device, and does not require additional operation by the staff. When the knob 7 is reset, the friction ring 23 automatically presses against the rotating rod 8, reducing the operating steps of the staff and simplifying the operation.

[0030] Furthermore, a vent 24 is provided on the upper surface of the operating table 2, and a vertical plate 25 is fixedly connected to the upper surface of the operating table 2. A connecting plate 26 is rotatably connected between the two vertical plates 25 through an axis, and a collar 27 is fixedly connected to the outer surface of the connecting plate 26. The internal thread of the collar 27 is provided with a sealing cover 28, and the sealing cover 28 is threadedly sleeved on the outer surface of the vent 24. When the device is not in use, the sealing cover 28 is located at the upper part of the vent 24 by rotating the connecting plate 26, and then the sealing cover 28 is rotated to make the sealing cover 28 descend in the collar 27. Subsequently, the sealing cover 28 is threadedly sleeved on the upper part of the vent 24 to complete the covering of the vent 24. The setting of the sealing cover 28 prevents external debris from entering the interior of the vent 24, and the practicability is high.

[0031] Working principle:

[0032] When the portable atmospheric pressure tank truck safety accessory verification device is in use, the knob 7 is pulled upward, and the connection platform 9 is moved upward by the upward movement of the knob 7. At this time, because the position of the rotating rod 8 is fixed, the first tooth 12 on the bottom wall of the cavity 10 will engage with the second tooth 13 on the surface of the circular plate 11. At this time, the first spring 16 will be in a stretched state. When the first tooth 12 and the second tooth 13 are engaged, the staff turns the knob 7 to drive the rotation of the rotating rod 8, so that the numerical value and other parameters of the verification device can be adjusted. At the same time, when the staff pulls the knob 7 upward, the connection platform 9 will move synchronously, thereby causing the clamping assembly to move, thereby removing the restriction on the rotating rod 8. When the staff no longer needs to rotate the rotating rod 8, the knob 7 is released. At this time, the first spring 16 will reset the connection platform 9, so that the first tooth 12 and the second tooth 13 are disengaged, and the clamping assembly will clamp the rotating rod 8. Subsequent staff cannot drive the rotating rod 8 to rotate when turning the knob 7, and the setting of the clamping assembly also ensures that the rotating rod 8 will not rotate.

[0033] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable atmospheric pressure tank truck safety accessory calibration device, comprising a box (1), characterized in that: An operating table (2) is embedded and installed inside the box (1), a test table (3) is embedded and installed inside the operating table (2), a positive and negative pressure gauge (4), a precision pressure gauge (5) and an external pressure gauge (6) are embedded and installed inside the operating table (2), a knob (7) is provided on the upper part of the operating table (2), a rotating rod (8) is provided on the lower part of the knob (7), the rotating rod (8) rotates and penetrates into the interior of the operating table (2), a connecting table (9) is fixedly connected to the lower surface of the knob (7), the connecting table (9) is in the shape of a truncated cone, which includes an inclined surface and a vertical surface, a cavity (10) is opened inside the connecting table (9), and the connecting table (9) is slidably sleeved on the rotating rod ( 8), the upper end of the rotating rod (8) is fixedly connected to a circular plate (11), the bottom wall of the cavity (10) is fixedly connected to a first tooth (12), the lower surface of the circular plate (11) is fixedly connected to a second tooth (13), the upper surface of the circular plate (11) is rotatably sleeved with a second rotating platform (15), the top wall of the cavity (10) is rotatably sleeved with a first rotating platform (14), a first spring (16) is fixedly connected between the first rotating platform (14) and the second rotating platform (15), the upper surface of the operating table (2) is provided with a sliding groove (17), the sliding groove (17) is located on both sides of the rotating rod (8), and a clamping assembly is provided inside the sliding groove (17).

2. The portable atmospheric pressure tank truck safety accessory calibration device according to claim 1, characterized in that: The clamping assembly includes an L-shaped fixing rod (18), the L-shaped fixing rod (18) is slidably connected to the inside of the sliding groove (17), the L-shaped fixing rod (18) includes a horizontal rod and a vertical rod, the horizontal rod is fixedly connected to the upper part of the vertical rod, and the inside of the sliding groove (17) is fixedly connected with a fixing rod (20).

3. The portable atmospheric pressure tank truck safety accessory calibration device according to claim 2, characterized in that: The L-shaped fixing rod (18) is slidably sleeved on the outside of the fixing rod (20), and the cross bar of the L-shaped fixing rod (18) is fixedly connected to the driving half ring (19).

4. The portable atmospheric pressure tank truck safety accessory calibration device according to claim 3 is characterized by: A second spring (21) is fixedly connected between the vertical rod of the L-shaped fixing rod (18) and the inner wall of the sliding groove (17), and the second spring (21) is sleeved on the outside of the fixing rod (20).

5. The portable atmospheric pressure tank truck safety accessory calibration device according to claim 4, characterized in that: The vertical rod of the L-shaped fixing rod (18) is fixedly connected to a connecting rod (22), and the adjacent ends of the two connecting rods (22) are fixedly connected to a friction ring (23).

6. The portable atmospheric pressure tank truck safety accessory calibration device according to claim 3, characterized in that: The inner diameter of the driving half ring (19) is adapted to the diameter of the vertical surface of the connecting platform (9), and the inner diameter of the friction ring (23) is adapted to the diameter of the rotating rod (8).

7. The portable atmospheric pressure tank truck safety accessory calibration device according to claim 1, characterized in that: The upper surface of the operating table (2) is provided with a vent (24), the upper surface of the operating table (2) is fixedly connected with a vertical plate (25), and a connecting plate (26) is rotatably connected between the two vertical plates (25) via an axle.

8. The portable atmospheric pressure tank truck safety accessory calibration device according to claim 7, characterized in that: The outer surface of the connecting plate (26) is fixedly connected with a collar (27), the inner thread of the collar (27) is provided with a sealing cover (28), and the sealing cover (28) is threadedly provided on the outer surface of the vent (24).

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