Special clamp for tire pressure gauge calibrating device

Abstract

The utility model discloses a special fixture for a tire pressure gauge calibrating device. The special fixture comprises a shell assembly, a linear driving assembly, an interface positioning assembly, a sealing assembly and a connector. The shell assembly comprises a first barrel and a second barrel, wherein openings of the first barrel and the second barrel are oppositely arranged, and the first barrel and the second barrel are in butt joint to define a cavity. The linear driving assembly is connected with the first barrel so as to drive the first barrel to be close to or away from the second barrel. The interface positioning assembly is used for positioning interfaces. The sealing assembly comprises a first sealing member and a second sealing member, and the sealing assembly can seal the two sides of the interface of the tire pressure gauge and seal the contact surface of the first cylinder body and the second cylinder body at the same time. The connector is installed on the second barrel and used for introducing gas into the cavity. Compared with the prior art, the clamp disclosed by the utility model can adapt to interfaces with various diameters, and the connection time of the interfaces can be shortened, so that the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tire pressure gauge calibration, in particular to a special clamp for a tire pressure gauge calibration device. Background Art

[0002] There are more than 20 types of tire pressure gauges on the market, including pointer pistol type, oil gauge type, pointer type A / B, etc., equipped with a variety of different quick adapters. When selecting quick adapters, metrology and calibration personnel need to conduct repeated tests and cannot choose the right one at a time. When pressurized to 1.6Mpa, quick connectors are prone to leakage, resulting in low work efficiency. Utility Model Content

[0003] The utility model aims to provide a special clamp for a tire pressure gauge calibration device to solve the problems existing in the above-mentioned prior art and improve work efficiency.

[0004] To achieve the above purpose, the utility model provides the following solutions:

[0005] The utility model discloses a special fixture for a tire pressure gauge calibration device, comprising:

[0006] The shell assembly comprises a first cylinder and a second cylinder with openings facing each other, the first cylinder and the second cylinder being connected to form a cavity; a first slide groove is arranged at the opening end of the first cylinder, a second slide groove is arranged at the opening end of the second cylinder, and the first slide groove is directly opposite to the second slide groove;

[0007] A linear drive assembly, the linear drive assembly is connected to the first cylinder to drive the first cylinder to approach or move away from the second cylinder;

[0008] An interface positioning assembly, the interface positioning assembly comprising a first positioning block, a second positioning block, a first adjusting screw and a second adjusting screw; the first positioning block is slidably installed in the first sliding groove, and the second positioning block is slidably installed in the second sliding groove; the first adjusting screw is threadedly connected to the first cylinder, and the small diameter end of the first adjusting screw abuts against a side of the first positioning block away from the second positioning block; the second adjusting screw is threadedly connected to the second cylinder, and the small diameter end of the second adjusting screw abuts against a side of the second positioning block away from the first positioning block;

[0009] A sealing assembly, the sealing assembly comprising a first sealing member and a second sealing member; the first sealing member is mounted on a side of the first cylinder close to the second cylinder, and the second sealing member is mounted on a side of the second cylinder close to the first cylinder; the sealing assembly can seal both sides of the interface of the tire pressure gauge and simultaneously seal the contact surface between the first cylinder and the second cylinder;

[0010] A connector is mounted on the second cylinder and is provided with a channel for introducing gas into the cavity.

[0011] Preferably, the first seal has a semi-cylindrical surface for contacting one side of the interface of the tire pressure gauge, and the second seal is used to contact the other side of the tire pressure gauge and the first seal at the same time. The second seal is provided with a groove for placing the interface of the tire pressure gauge, and the shape of the groove is a semi-cylindrical surface.

[0012] Preferably, the first barrel and the second barrel are both cylindrical barrels.

[0013] Preferably, the linear drive assembly includes a guide slide, a cross beam, a rotating member and a first nut; the guide slide includes multiple axes parallel to the first cylinder, and the guide slide passes through the side wall of the first cylinder; one end of the guide slide is fixedly connected to the second cylinder, and the second end of the guide slide is fixedly connected to the cross beam; the cross beam is arranged along the diameter direction of the first cylinder, and each of the two ends of the cross beam is connected to a guide slide; the rotating member passes through the center of the cross beam and is limited by the cross beam, the rotating member is threadedly connected to the first nut, the first nut is fixed on the first cylinder, and the first nut is coaxial with the first cylinder.

[0014] Preferably, the guide slide column is threadedly connected to the second cylinder, and the guide slide column is fixedly connected to the crossbeam by connecting screws.

[0015] Preferably, the rotating member comprises a threaded rod, a handwheel flange and a handwheel fork; one end of the threaded rod away from the first cylinder is fixedly connected to the handwheel flange, and the handwheel fork is fixedly connected to the handwheel flange.

[0016] Preferably, the threaded rod and the handwheel flange are connected by a connecting key for circumferential limitation; the threaded rod and the handwheel flange are connected by a handwheel fastening screw for axial limitation; a first gasket is provided between the handwheel flange and the handwheel fastening screw, and a second gasket is provided between the bottom of the first slide groove and the first positioning block, and between the bottom of the second slide groove and the second positioning block.

[0017] Preferably, the connecting head includes a connecting screw and a second nut, the second nut is threadedly connected to the middle part of the connecting screw; one end of the connecting screw is threadedly connected to the second cylinder, and the other end of the connecting screw is used to be threadedly connected to the mounting seat.

[0018] Compared with the prior art, the utility model has achieved the following technical effects:

[0019] The utility model clamps and positions the interface of the tire pressure gauge through the interface positioning component, and seals the cavity formed by the first cylinder and the second cylinder after docking through the sealing component. The above structure realizes the positioning and sealing of the interface of the tire pressure gauge without using a threaded connection method. The clamp can adapt to interfaces of various diameters and can shorten the connection time of the interface, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of a special fixture for a tire pressure gauge calibration device according to an embodiment of the utility model;

[0022] Figure 2 is a schematic diagram of the handwheel flange;

[0023] Figure 3 It is a schematic diagram of the hand wheel fork;

[0024] Figure 4 is a schematic diagram of a first gasket;

[0025] Figure 5 is a schematic diagram of a threaded rod;

[0026] Figure 6 is a schematic diagram of a connecting key;

[0027] Figure 7 It is a schematic diagram of the hand wheel fastening screw;

[0028] Figure 8 is a schematic diagram of the beam;

[0029] Fig. 9 is a schematic diagram of connecting screws;

[0030] Fig.10 is a schematic diagram of a first cylinder;

[0031] Fig.11 is a schematic diagram of a first sealing member;

[0032] Fig.12 is a schematic diagram of a second sealing member;

[0033] Fig.13 is a schematic diagram of the adjustment screw;

[0034] Fig.14A schematic diagram of a guide slide column;

[0035] Fig.15 is a schematic diagram of a second sealing member;

[0036] Fig.16 is a schematic diagram of the connector;

[0037] Fig.17 is a schematic diagram of the positioning block;

[0038] Fig.18 is a schematic diagram of a first nut;

[0039] Fig.19 Schematic diagram of the second gasket.

[0040] Explanation of the accompanying drawings: 1-handwheel flange; 2-handwheel fork; 3-first gasket; 4-threaded rod; 5-handwheel fastening screw; 6-crossbeam; 7-connecting screw; 8-guide slide column; 9-first nut; 10-first cylinder; 11-adjusting screw; 12-second cylinder; 13-second gasket; 14-second sealing member; 15-positioning block; 16-connecting head. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] Reference Figures 1 to 19 This embodiment provides a special fixture for a tire pressure gauge calibration device, including a housing component, a linear drive component, an interface positioning component, a sealing component and a connector 16.

[0043] The housing assembly includes a first cylinder 10 and a second cylinder 12 with openings facing each other. The first cylinder 10 and the second cylinder 12 are connected to form a cavity, which is used to contain the gas to be detected. A first chute is set at the open end of the first cylinder 10, and a second chute is set at the open end of the second cylinder 12. The first chute is directly opposite to the second chute.

[0044] The linear drive assembly is connected to the first cylinder 10 to drive the first cylinder 10 to move closer to or farther from the second cylinder 12. There are many types of linear drive assemblies, and those skilled in the art can flexibly choose, for example, electric push rods, cylinders, etc.

[0045] The interface positioning assembly is used to clamp and position the interface of the tire pressure gauge, and includes a first positioning block, a second positioning block, a first adjusting screw and a second adjusting screw. Among them, the first positioning block and the second positioning block are collectively referred to as positioning blocks 15, and the first adjusting screw and the second adjusting screw are collectively referred to as adjusting screws 11. The first positioning block is slidably installed in the first slide groove, and the second positioning block is slidably installed in the second slide groove. The first adjusting screw is threadedly connected to the first cylinder 10, and the small diameter end of the first adjusting screw abuts the side of the first positioning block away from the second positioning block. The second adjusting screw is threadedly connected to the second cylinder 12, and the small diameter end of the second adjusting screw abuts the side of the second positioning block away from the first positioning block. It should be noted that the diameters of the interfaces of different tire pressure gauges may be different. Therefore, the position of the first positioning block is changed by rotating the first adjusting screw, and the position of the second positioning block is changed by rotating the second adjusting screw to adapt to interfaces of different diameters.

[0046] The sealing assembly is used to seal the cavity enclosed by the first cylinder 10 and the second cylinder 12 after they are docked. The sealing assembly includes a first seal and a second seal 14. The first seal is installed on the side of the first cylinder 10 close to the second cylinder 12, and the second seal 14 is installed on the side of the second cylinder 12 close to the first cylinder 10. The sealing assembly can seal both sides of the interface of the tire pressure gauge and seal the contact surface between the first cylinder 10 and the second cylinder 12. The first seal and the second seal 14 can maintain close contact with interfaces of various diameters through elastic deformation.

[0047] The connector 16 is mounted on the second cylinder 12, and a passage for introducing gas into the cavity is provided on the connector 16. After the interface of the tire pressure gauge is fixed, the gas to be tested can be filled into the wall through the connector 16.

[0048] The working principle of the special fixture for the tire pressure gauge calibration device of this embodiment is as follows:

[0049] In this embodiment, the interface of the tire pressure gauge is clamped and positioned by the interface positioning component, and the cavity formed by the first cylinder 10 and the second cylinder 12 is sealed by the sealing component. The above structure realizes the positioning and sealing of the interface of the tire pressure gauge without using a threaded connection method. The clamp can adapt to interfaces of various diameters and can shorten the connection time of the interface, thereby improving work efficiency.

[0050] As a possible example, in this embodiment, the first seal has a semi-cylindrical surface for contacting one side of the interface of the tire pressure gauge, the second seal 14 is used to contact the other side of the tire pressure gauge and the first seal at the same time, and the second seal 14 is provided with a groove for placing the interface of the tire pressure gauge, and the shape of the groove is a semi-cylindrical surface. The first cylinder 10 is provided with a mounting groove for installing the first seal, and the second cylinder 12 is provided with a mounting groove for installing the second seal 14.

[0051] As a possible example, in this embodiment, the first barrel 10 and the second barrel 12 are both cylindrical barrels (similar in shape to a cup). According to different actual needs, those skilled in the art may also select the first barrel 10 and the second barrel 12 in other shapes such as square barrels, as long as the cavity can be obtained after the first barrel 10 and the second barrel 12 are docked.

[0052] As a possible example, in this embodiment, the linear drive assembly includes a guide slide 8, a crossbeam 6, a rotating member and a first nut 9. The guide slide 8 includes multiple axes parallel to the first cylinder 10, and the guide slide 8 passes through the side wall of the first cylinder 10. One end of the guide slide 8 is fixedly connected to the second cylinder 12, and the second end of the guide slide 8 is fixedly connected to the crossbeam 6. The crossbeam 6 is arranged along the diameter direction of the first cylinder 10, and a guide slide 8 is connected to each of the two ends of the crossbeam 6. The rotating member passes through the center of the crossbeam 6 and is limited by the crossbeam 6. The rotating member is threadedly connected to the first nut 9, the first nut 9 is fixed on the first cylinder 10, and the first nut 9 is coaxial with the first cylinder 10.

[0053] The rotating member always keeps against the cross beam 6 during rotation, so the position of the rotating member does not change, and the first nut 9 and the first cylinder 10 translate along the guide slide 8. Through the rotation of the rotating member, a thrust toward the second cylinder 12 can be applied to the first cylinder 10, thereby squeezing the first seal and the second seal 14 to improve the sealing effect.

[0054] As a possible example, in this embodiment, the guide slide post 8 is threadedly connected to the second cylinder 12, and the guide slide post 8 is fixedly connected to the crossbeam 6 by connecting screws 7. According to different actual needs, those skilled in the art may also choose other fixed connection methods such as bonding and welding.

[0055] As a possible example, in this embodiment, the rotating member includes a threaded rod 4, a handwheel flange 1 and a handwheel fork 2. One end of the threaded rod 4 facing away from the first cylinder 10 is fixedly connected to the handwheel flange 1, and the handwheel fork 2 is fixedly connected to the handwheel flange 1. Specifically, the handwheel fork 2 is threadedly connected to the handwheel flange 1, and the handwheel fork 2 includes four and is evenly distributed along the circumferential direction of the handwheel flange 1. The rotating member increases the rotation radius by setting the handwheel fork 2, thereby increasing the rotational torque. According to different actual needs, those skilled in the art may also choose other types of rotating members.

[0056] As a possible example, in this embodiment, the threaded rod 4 is connected to the handwheel flange 1 by a connecting key for circumferential limiting. The threaded rod 4 is connected to the handwheel flange 1 by a handwheel fastening screw 5 for axial limiting. A first gasket 3 is provided between the handwheel flange 1 and the handwheel fastening screw 5, and a second gasket 13 is provided between the bottom of the first chute and the first positioning block, and between the bottom of the second chute and the second positioning block.

[0057] As a possible example, in this embodiment, the connector 16 includes a connecting screw and a second nut, and the second nut is threadedly connected to the middle of the connecting screw. One end of the connecting screw is threadedly connected to the second barrel 12, and the other end of the connecting screw is used to be threadedly connected to the mounting seat. Specifically, the connecting screw is connected to the bottom center of the second barrel 12, and those skilled in the art may also select other connection positions.

[0058] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A special fixture for tire pressure gauge calibration device, characterized in that: include: The shell assembly comprises a first cylinder and a second cylinder with openings facing each other, the first cylinder and the second cylinder being connected to form a cavity; a first slide groove is arranged at the opening end of the first cylinder, a second slide groove is arranged at the opening end of the second cylinder, and the first slide groove is directly opposite to the second slide groove; A linear drive assembly, the linear drive assembly is connected to the first cylinder to drive the first cylinder to approach or move away from the second cylinder; An interface positioning assembly, the interface positioning assembly comprising a first positioning block, a second positioning block, a first adjusting screw and a second adjusting screw; the first positioning block is slidably installed in the first sliding groove, and the second positioning block is slidably installed in the second sliding groove; the first adjusting screw is threadedly connected to the first cylinder, and the small diameter end of the first adjusting screw abuts against a side of the first positioning block away from the second positioning block; the second adjusting screw is threadedly connected to the second cylinder, and the small diameter end of the second adjusting screw abuts against a side of the second positioning block away from the first positioning block; A sealing assembly, the sealing assembly comprising a first sealing member and a second sealing member; the first sealing member is mounted on a side of the first cylinder close to the second cylinder, and the second sealing member is mounted on a side of the second cylinder close to the first cylinder; the sealing assembly can seal both sides of the interface of the tire pressure gauge and simultaneously seal the contact surface between the first cylinder and the second cylinder; A connector is mounted on the second cylinder and is provided with a channel for introducing gas into the cavity.

2. The special fixture for tire pressure gauge calibration device according to claim 1, characterized in that: The first seal has a semi-cylindrical surface for contacting one side of the interface of the tire pressure gauge, and the second seal is used to contact the other side of the tire pressure gauge and the first seal at the same time. The second seal is provided with a groove for placing the interface of the tire pressure gauge, and the shape of the groove is a semi-cylindrical surface.

3. The special fixture for tire pressure gauge calibration device according to claim 1, characterized in that: The first cylinder and the second cylinder are both cylindrical cylinders.

4. The special fixture for tire pressure gauge calibration device according to claim 3, characterized in that: The linear drive assembly includes a guide slide, a crossbeam, a rotating member and a first nut; the guide slide includes multiple axes parallel to the first cylinder, and the guide slide passes through the side wall of the first cylinder; one end of the guide slide is fixedly connected to the second cylinder, and the second end of the guide slide is fixedly connected to the crossbeam; the crossbeam is arranged along the diameter direction of the first cylinder, and each of the two ends of the crossbeam is connected to a guide slide; the rotating member passes through the center of the crossbeam and is limited by the crossbeam, the rotating member is threadedly connected to the first nut, the first nut is fixed on the first cylinder, and the first nut is coaxial with the first cylinder.

5. The special fixture for tire pressure gauge calibration device according to claim 4, characterized in that: The guide slide post is threadedly connected to the second cylinder, and the guide slide post is fixedly connected to the cross beam via connecting screws.

6. The special fixture for tire pressure gauge calibration device according to claim 4, characterized in that: The rotating member comprises a threaded rod, a handwheel flange and a handwheel fork; one end of the threaded rod away from the first cylinder is fixedly connected to the handwheel flange, and the handwheel fork is fixedly connected to the handwheel flange.

7. The special fixture for tire pressure gauge calibration device according to claim 6, characterized in that: The threaded rod and the handwheel flange are connected by a connecting key for circumferential limitation; the threaded rod and the handwheel flange are connected by a handwheel fastening screw for axial limitation; a first gasket is provided between the handwheel flange and the handwheel fastening screw, and a second gasket is provided between the bottom of the first slide groove and the first positioning block, and between the bottom of the second slide groove and the second positioning block.

8. The special fixture for tire pressure gauge calibration device according to claim 1, characterized in that: The connecting head includes a connecting screw and a second nut, wherein the second nut is threadedly connected to the middle portion of the connecting screw; one end of the connecting screw is threadedly connected to the second cylinder, and the other end of the connecting screw is used for threaded connection to the mounting seat.

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