Wheel type probe sealing mechanism

Abstract

The utility model discloses a wheel type probe sealing mechanism which comprises a wheel shaft (5) connected with a wheel hub (1), the wheel shaft (5) is of a split type structure and comprises an upper half shaft (51) and a lower half shaft (52) which are matched with each other, the two sides of the upper half shaft (51) are respectively provided with a group of upper screw holes (51a), and the two sides of the lower half shaft (52) are respectively provided with a group of lower screw holes (52a); a cross recess screw (8) is connected in the corresponding upper screw hole (51a) and the lower screw hole (52a), the upper half shaft (51) is fixedly connected with the lower half shaft (52) through the cross recess screw (8), and a framework sealing ring (6) and an oil seal check ring (7) are arranged between the inner end of the wheel shaft (5) and the hub (1) after the upper half shaft (51) and the lower half shaft (52) are combined. The hollow shaft has the advantages that threading of the hollow shaft is facilitated, sealing performance is improved, dismounting and mounting are facilitated, and sealing and rotating are both considered.

Description

Technical Field

[0001] The utility model belongs to the technical field of wheel probe sealing, and particularly relates to a wheel probe sealing mechanism. Background Art

[0002] In the structure of a wheel probe, the probe cable needs to be drawn out from a hollow shaft. However, the closed space of the wheel probe is filled with a coupling medium. To ensure that the medium does not leak out, sealant is usually potted between the probe connection wire and the wire outlet shaft. This structure brings great inconvenience to disassembly. Once the sealant solidifies, it is basically impossible to disassemble. Therefore, the existing sealing structure makes it very difficult to replace the probe.

[0003] In addition, since the size of the probe side of a phased array probe is generally relatively large, and the wire outlet end is an Olympus connector. Due to the small size of the wheel skin opening and structural limitations, the diameter of the wire outlet shaft of the wheel probe is smaller than the size of the phased array probe and the Olympus connector size. Therefore, neither end can pass through the wire outlet shaft. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problems of difficult wire threading, inability to balance sealing and disassembly in existing wheel probes, and provides a wheel probe sealing mechanism that can not only facilitate wire threading through the hollow shaft, but also improve the sealing performance while being easy to assemble and disassemble, taking into account both sealing and rotation.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A wheel probe sealing mechanism includes a hub. The outer edge of the hub is connected and fixed to the probe wheel skin through a pressing plate. The inner ring of the hub is connected and matched with a wheel shaft through a bearing, and the wheel shaft is of a split structure.

[0007] The wheel shaft includes a pair of upper half shafts and lower half shafts that cooperate with each other. A set of upper screw holes are respectively arranged on both sides of the upper half shaft, and a set of lower screw holes are respectively arranged on both sides of the lower half shaft. The upper screw holes are arranged opposite to the lower screw holes and their axes coincide with each other;

[0008] A cross recessed screw is connected in the corresponding upper screw hole and lower screw hole. The upper half shaft is fixedly connected to the lower half shaft through the cross recessed screw. A skeleton oil seal and an oil seal retaining ring are arranged between the inner end of the wheel shaft formed by combining the upper half shaft and the lower half shaft and the hub.

[0009] Furthermore, a limiting post and a limiting hole for corresponding fitting are arranged on the connection surface of the upper half shaft and the lower half shaft. The limiting holes and the lower screw holes are evenly spaced. When the limiting post is embedded in the limiting hole, the corresponding upper screw hole and lower screw hole are also on the same axis, so that the upper half shaft and the lower half shaft form a complete circular cylindrical structure.

[0010] Further, an outwardly convex annular stepped platform is provided at the inner end of the axle. The axis of the annular stepped platform coincides with the axis of the axle. The annular stepped platform is also of a split structure and includes an upper stepped platform and a lower stepped platform. The upper stepped platform is provided at the shaft end of the upper half axle, and the lower stepped platform is provided at the shaft end of the lower half axle.

[0011] Further, the bearing is snap-fitted on one side of the annular stepped platform, and the skeleton oil seal is sleeved on the annular stepped platform and is closely arranged against the bearing. The oil seal retaining ring is connected to the end of the annular stepped platform, and its outer diameter is larger than the outer diameters of the skeleton oil seal and the bearing, so as to play a role of complete sealing.

[0012] Further, a flat upper rectangular surface is provided on the outer surface of the upper half axle. The upper rectangular surface is arranged along the central axis of the upper half axle, and two groups of upper screw holes are symmetrically arranged on both sides of the upper rectangular surface. A flat lower rectangular surface is also provided on the outer surface of the lower half axle. The lower rectangular surface is arranged along the central axis of the lower half axle, and two groups of lower screw holes are symmetrically arranged on both sides of the lower rectangular surface. The upper rectangular surface and the lower rectangular surface are parallel to each other.

[0013] Compared with the prior art, the advantages of the technical solution of the present utility model are specifically as follows:

[0014] (1) The present utility model solves the problem that the phased array probe and the Olympus end joint are too large in size to thread through the hollow shaft. The axle is designed into an upper and lower split half axle structure. Before the two half axles are fitted, the wire of the phased array probe can be placed into the hollow shaft, which is simple and convenient. At the same time, the screw assembly is also convenient for disassembly;

[0015] (2) The present utility model solves the problem of the cooperation between the shaft seal and the bearing installation through the positioning cooperation of the two half-section shafts through the pin shaft and the pin hole. After the shaft is fitted, a skeleton oil seal is used for water blocking and sealing on the outside, improving the overall

[0016] sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the wheel-type probe sealing mechanism of the present utility model;

[0018] Figure 2 is a schematic diagram of the cooperation between the upper half axle and the lower half axle of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS Embodiment

[0019] To make the present utility model clearer and more understandable, the following further describes a wheel-type probe sealing mechanism of the present utility model with reference to the drawings. The specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0020] Refer to Figure 1 and Figure 2, A wheel probe sealing mechanism, including a hub 1. The outer edge of the hub 1 is fixedly connected to the probe wheel skin 3 through a pressing plate 2. The inner ring of the hub 1 is connected and matched with a wheel axle 5 through a bearing 4. It is characterized in that:

[0021] The wheel axle 5 is of a split structure;

[0022] The wheel axle 5 includes a pair of upper half axles 51 and lower half axles 52 that cooperate with each other. On both sides of the upper half axle 51, there are respectively a set of upper screw holes 51a. On both sides of the lower half axle 52, there are respectively a set of lower screw holes 52a. The upper screw holes 51a are arranged opposite to the lower screw holes 52a and their axes coincide with each other;

[0023] On the connecting surface of the upper half axle 51 and the lower half axle 52, there are corresponding and fitting limit posts 511 and limit holes 521. The limit holes 521 and the lower screw holes 52a are evenly spaced. And when the limit post 511 is embedded in the limit hole 521, the corresponding upper screw hole 51a and lower screw hole 52a are also on the same axis, so that the upper half axle 51 and the lower half axle 52 form a complete circular cylindrical structure;

[0024] A cross recessed head screw 8 is connected in the corresponding upper screw hole 51a and lower screw hole 52a. The upper half axle 51 is fixedly connected to the lower half axle 52 through the cross recessed head screw 8. Between the inner end of the wheel axle 5 formed by the combination of the upper half axle 51 and the lower half axle 52 and the hub 1, there are a skeleton oil seal 6 and an oil seal retaining ring 7.

[0025] See Figure 2 , In this embodiment, the inner end of the wheel axle 5 is provided with an outwardly convex annular stepped platform 53. The axis of the annular stepped platform 53 coincides with the axis of the wheel axle 5. The annular stepped platform 53 is also of a split structure. It includes an upper stepped platform 53a and a lower stepped platform 53b. The upper stepped platform 53a is arranged at the shaft end of the upper half axle 51, and the lower stepped platform 53b is arranged at the shaft end of the lower half axle 52;

[0026] The bearing 4 is snap-fitted on one side of the annular stepped platform 53. And the skeleton oil seal 6 is sleeved on the annular stepped platform 53 and is closely arranged against the bearing 4. The oil seal retaining ring 7 is connected to the end of the annular stepped platform 53 and its outer diameter is larger than the outer diameters of the skeleton oil seal 6 and the bearing 4 to play a role of complete sealing.

[0027] See Figure 2 , In this embodiment, the outer surface of the upper half axle 51 is provided with a flat upper rectangular surface 51b. The upper rectangular surface 51b is arranged along the central axis of the upper half axle 51. And the two sets of upper screw holes 51a are symmetrically arranged on both sides of the upper rectangular surface 51b. The outer surface of the lower half axle 52 is also provided with a flat lower rectangular surface 52b. The lower rectangular surface 52b is arranged along the central axis of the lower half axle 52. And the two sets of lower screw holes 52a are symmetrically arranged on both sides of the lower rectangular surface 52b. The upper rectangular surface 51b and the lower rectangular surface 52b are parallel to each other.

[0028] The wire outlet shaft of the present utility model is cut in half for installation. Since the wheel-type probe is filled with coupling fluid, the issues of sealing and rotation need to be considered when the wire outlet shaft is cut in half. Therefore, 6 groups of corresponding positioning pin shafts and pin holes for fitting are provided at the section of the two half shafts. After the two half shafts are fitted through the pin shafts and pin holes, they are fixed by cross-slot screws.

[0029] The wheel-type probe sealing mechanism of the present utility model can facilitate the placement of the wire outlet of the phased array probe, and at the same time ensure the sealing performance at the shaft end, with convenient and rapid disassembly and assembly, improving the work efficiency.

[0030] In addition to the above embodiments, the present utility model may also have other embodiments. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present utility model.

Claims

1. A wheel probe sealing mechanism, comprising a wheel hub (1), the outer edge of the wheel hub (1) being connected and fixed to a probe wheel skin (3) via a pressure plate (2), the inner ring of the wheel hub (1) being connected and matched to a wheel shaft (5) via a bearing (4), characterized in that: The wheel axle (5) is a split structure; The wheel axle (5) comprises a pair of upper half shafts (51) and lower half shafts (52) that cooperate with each other, a group of upper screw holes (51a) are respectively provided on both sides of the upper half shaft (51), and a group of lower screw holes (52a) are respectively provided on both sides of the lower half shaft (52), the upper screw holes (51a) are arranged opposite to the lower screw holes (52a), and the axes of the two coincide with each other; A cross-slot screw (8) is connected to the corresponding upper screw hole (51a) and the lower screw hole (52a); the upper half shaft (51) is fixedly connected to the lower half shaft (52) via the cross-slot screw (8); and a skeleton sealing ring (6) and an oil seal retaining ring (7) are provided between the inner end of the wheel axle (5) after the upper half shaft (51) and the lower half shaft (52) are combined and the wheel hub (1).

2. The wheel probe sealing mechanism according to claim 1, characterized in that: The connecting surfaces of the upper semi-shaft (51) and the lower semi-shaft (52) are provided with correspondingly engaged limiting posts (511) and limiting holes (521); the limiting holes (521) and the lower screw holes (52a) are evenly spaced and arranged; and when the limiting posts (511) are embedded in the limiting holes (521), the corresponding upper screw holes (51a) and the lower screw holes (52a) are also located on the same axis, so that the upper semi-shaft (51) and the lower semi-shaft (52) form a complete circular cylindrical structure.

3. The wheel probe sealing mechanism according to claim 1 or 2, characterized in that: The inner end of the wheel axle (5) is provided with an outwardly protruding annular step platform (53), the axis of the annular step platform (53) coincides with the axis of the wheel axle (5), and the annular step platform (53) is also a split structure, comprising an upper step platform (53a) and a lower step platform (53b), the upper step platform (53a) being provided at the shaft end of the upper half shaft (51), and the lower step platform (53b) being provided at the shaft end of the lower half shaft (52).

4. The wheel probe sealing mechanism according to claim 3, characterized in that: The bearing (4) is clamped on one side of the annular stepped platform (53), and the skeleton sealing ring (6) is sleeved on the annular stepped platform (53) and arranged closely to the bearing (4), and the oil seal retaining ring (7) is connected to the end of the annular stepped platform (53) and has an outer diameter greater than the outer diameters of the skeleton sealing ring (6) and the bearing (4).

5. The wheel probe sealing mechanism according to claim 1 or 2, characterized in that: The outer surface of the upper semi-axis (51) is provided with a straight upper rectangular surface (51b), the upper rectangular surface (51b) is arranged along the central axis of the upper semi-axis (51), and two groups of upper screw holes (51a) are symmetrically arranged on both sides of the upper rectangular surface (51b); the outer surface of the lower semi-axis (52) is also provided with a straight lower rectangular surface (52b), the lower rectangular surface (52b) is arranged along the central axis of the lower semi-axis (52), and the two groups of lower screw holes (52a) are symmetrically arranged on both sides of the lower rectangular surface (52b), and the upper rectangular surface (51b) and the lower rectangular surface (52b) are parallel to each other.

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