Clamping diameter adjustable X-ray flaw detector

Abstract

The utility model relates to a clamping diameter adjustable X-ray flaw detection machine, including fixed casing, telescopic pole, gear ring and bearing ring, be equipped with the fixed cavity of fixed casing with X-ray flaw detection machine head adaptation, fixed casing outer wall be equipped with circumferentially arranged gear case, the gear case is fixedly equipped with the fixed link of telescopic pole, and the bearing ring is equipped with the fixed link of telescopic pole. The fixed rod is connected with a telescopic rod; a roller is arranged at the end part of the telescopic rod; a gear arranged at the end of the fixing rod is meshed with the gear ring in the gear box, the gear can control the telescopic rod to stretch out and draw back from the fixing rod when rotating, and the stretching direction of the telescopic rod is consistent with the radial direction of the fixing shell. The gear ring is rotatably arranged on the outer wall of the bearing ring, and the bearing ring is slidably arranged on the outer wall of the fixing shell. The length of the telescopic supporting rod of the device can be adjusted, the clamping diameter can be changed at any time so as to adapt to pipelines with different pipe diameters, and the device can integrally and stably advance in cylindrical pipelines with different inner diameters or cylindrical pipelines with gradually-variable diameters.

Description

Technical Field

[0001] The utility model relates to the technical field of X-ray flaw detection, in particular to an X-ray flaw detector with adjustable clamping diameter. Background Art

[0002] When detecting flaws in thick cylindrical products, the head of the X-ray machine needs to be sent into the cylinder for movement; for example, a fixture for X-ray flaw detection disclosed in Chinese authorized publication number CN 109531463 B can fix the head of the X-ray machine to slide inside the cylinder and is suitable for circumferential seam internal flaw detection of deep cylindrical products with a small diameter at the butt joint.

[0003] However, the fixture for X-ray flaw detection disclosed in the above-mentioned published document can only adjust the diameter of the inner wall of the cylinder clamped in the cylinder pipe before entering the pipe, that is, first adjust the clamping diameter and then enter the pipe; therefore, when inside a cylinder pipe with different inner diameters or a cylinder pipe with a gradually changing diameter, the fixture in the above-mentioned published document cannot change the clamping radius. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an X-ray flaw detector with adjustable clamping diameter to solve the above problems existing in the prior art.

[0005] To solve the above problems, the utility model provides an X-ray flaw detector with adjustable clamping diameter, which includes a fixed shell, a telescopic support rod, a toothed ring and a bearing ring. A fixed cavity adapted to the head of the X-ray flaw detector is provided inside the fixed shell. A gearbox arranged circumferentially is fixedly provided on the outer wall of the fixed shell. A fixed rod of the telescopic support rod is fixedly provided on the gearbox. The fixed rod is connected to a telescopic rod, and a roller is provided at the end of the telescopic rod. A gear provided at the end of the fixed rod meshes with the toothed ring inside the gearbox. When the gear rotates, it can control the telescopic rod to extend and retract from the fixed rod, and the telescopic direction of the telescopic rod is consistent with the radial direction of the fixed shell. The toothed ring is rotatably arranged on the outer wall of the bearing ring, and the bearing ring is slidably arranged on the outer wall of the fixed shell and can be removed from the fixed shell. When the toothed ring meshes with the gear, the sliding of the bearing ring on the outer wall of the fixed shell is locked.

[0006] The X-ray flaw detector with adjustable clamping diameter provided by the utility model also has the following technical features:

[0007] Further, an arc-shaped groove is provided on the gearbox for avoiding the toothed ring. The arc-shaped groove communicates with the inner cavity of the gearbox. The gear is arranged in the inner cavity of the gearbox, and a main rotating shaft fixedly connected to the gear passes through the gearbox and is rotatably connected to the fixed rod.

[0008] Further, a motor gearbox is also provided on the fixed shell. The structure of the motor gearbox is the same as that of the gearbox, and the motor gear inside the motor gearbox also meshes with the toothed ring when the gear meshes with the toothed ring.

[0009] Further, a motor bracket is fixedly provided on the outer wall of the motor gearbox, and a motor is fixedly provided inside the motor bracket. The motor is a stepper motor or a servo motor.

[0010] Further, a positioning ring is fixedly provided on the outer wall of the fixed housing, and the positioning ring is connected to the surface of the gearbox with an arc-shaped groove; the outer wall of the positioning ring abuts against the inner wall of the bearing ring, and when the toothed ring meshes with the gear, the groove provided on the positioning ring is engaged with the convex ring provided on the bearing ring.

[0011] Further, the end face of the positioning ring away from the gearbox is provided with a chamfer.

[0012] Further, the inner wall of the toothed ring is rotatably connected to the bearing ring through a bearing. The toothed ring extends out of the outer wall of the bearing ring, and the tooth surface on the toothed ring is provided on the end face of the part of the toothed ring extending out of the bearing ring.

[0013] Further, the gear and the motor gear are conical gears, and the tooth surface of the toothed ring is an inclined tooth surface.

[0014] Further, a flange is fixedly provided at the end of the fixed rod, the flange is fixedly connected to the gearbox, and the driving shaft is rotatably connected to the flange through a flange bearing inside the flange.

[0015] Further, a driven shaft is provided inside the main rotating shaft. Spline grooves are provided on the inner walls of the main rotating shaft and the driven shaft. The end of the driven shaft close to the gear is a spline. The outer walls of the main rotating shaft and the driven shaft are provided with threads. A nut seat is provided at the end of the telescopic rod close to the gear. A fixing pin is provided between the fixed rod and the telescopic rod to prevent relative circumferential rotation. An end bearing is provided at the end of the telescopic rod with a roller and is rotatably connected to the driven shaft inside it.

[0016] The utility model has the following beneficial effects: The clamping diameter adjustable X-ray flaw detector of the utility model enables the head of the flaw detector to travel in the cylindrical pipeline through the gearboxes, telescopic support rods and rollers circumferentially arranged on the outer wall of the fixed housing. In addition, with the cooperation of the telescopic support rods, toothed rings and motors, the length of the telescopic support rods can be adjusted, and the clamping radius can be changed at any time to cope with pipelines of different diameters. The clamping radius can also be changed inside the pipeline. Therefore, it can stably travel in the cylindrical pipeline in cylindrical pipelines with different inner diameters or gradually changing diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the utility model;

[0018] Figure 2 is the exploded structural schematic diagram of the utility model;

[0019] Figure 3 is Figure 1Schematic cross-sectional view along line A-A;

[0020] Figure 4 is Figure 2 Detail view at B in;

[0021] Figure 5 is Figure 3 Detail view at C in;

[0022] Figure 6 Schematic view of the related structure of the power transmission of the present utility model;

[0023] Figure 7 Schematic view and cross-sectional view of the telescopic support rod of the present utility model. Specific embodiments

[0024] The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0025] Such as Figures 1 to 7 In the embodiment of the clamping diameter adjustable X-ray flaw detector of the present utility model shown, the clamping diameter adjustable X-ray flaw detector includes a fixed shell 1, a telescopic support rod 2, a toothed ring 3 and a bearing ring 4.

[0026] Specifically, a fixed cavity adapted to the head 5 of the X-ray flaw detector is provided inside the fixed shell 1. The fixed shell 1 is divided into an upper shell 14 in the shape of a semi-circular ring and a lower shell 15 in the shape of a semi-circular ring. One of the docking joints between the upper shell 14 and the lower shell 15 is connected by a hinge 16; an anti-slip and shock-absorbing rubber pad or silica gel pad is laid on the inner wall of the fixed shell 1 to wrap the head 5 of the X-ray flaw detector.

[0027] A circumferentially arranged cylindrical gearbox 11 is fixedly provided on the outer wall of the fixed shell 1. The circumferentially arranged gearboxes 11 in the same circle are a group of gearboxes 11. One group of gearboxes 11 is provided at both ends of the fixed shell 1; the gearbox 11 can be fixedly provided on the outer wall of the fixed shell 1 by welding; preferably, each group of gearboxes 11 has three gearboxes 11, two of which are provided on the lower shell 15 and are symmetrically arranged on both sides of the semi-circular lower shell 15, and another single gearbox 11 is provided at the top of the upper shell 11.

[0028] The telescopic support rod 2 includes a fixed rod 21 and a telescopic rod 22. The fixed rod 21 is connected to the telescopic rod 22. A roller 221 is provided at the end of the telescopic rod 22. The roller 221 is used to directly abut against the inner wall of the pipeline. A shock-absorbing component can be arranged to connect the roller 221 to the end of the telescopic rod 22. A gear 23 provided at the end of the fixed rod 21 meshes with a toothed ring 3 inside the gearbox 11. When the gear 23 rotates, it can control the telescopic rod 22 to extend and retract from the fixed rod 21, and there will be no relative rotation between the telescopic rod 22 and the fixed rod 21. The telescopic direction of the telescopic rod 22 is consistent with the radial direction of the fixed shell 1.

[0029] The fixed rod 21 of the telescopic support rod 2 is fixedly arranged in the gearbox 11, and the length direction of the telescopic support rod 2 is consistent with the radial direction of the fixed shell 1. The telescopic support rod 2 fixedly arranged on the gearbox 11 provided on the lower shell 15 is used to support the fixed shell 1 and the head 5 of the X-ray flaw detector; the telescopic support rod 2 fixedly arranged on the gearbox 11 at the top of the upper shell 11 is used to abut against the inner wall of the pipeline to make the device stable when clamping the inner wall of the pipeline.

[0030] The toothed ring 3 is rotatably arranged on the outer wall of the bearing ring 4, and is specifically connected through a bearing provided on the bearing ring 4, so that there is only relative rotation between the bearing ring 4 and the toothed ring 3, and there is no relative radial and axial displacement; the bearing ring 4 is slidably arranged on the outer wall of the fixed shell 1 and can be removed from the fixed shell 1; when the toothed ring 3 meshes with the gear 23, the sliding of the bearing ring 4 on the outer wall of the fixed shell 1 is locked; in addition, when the bearing ring 4 is sleeved on the fixed shell 1 and locked, the bearing ring 4 plays a role in fixing the upper shell 14 and the lower shell 15 together to prevent them from being accidentally opened.

[0031] For the clamping diameter adjustable X-ray flaw detector of the present utility model, the head of the flaw detector can travel in the cylindrical pipeline through the gearboxes, telescopic support rods and rollers circumferentially arranged on the outer wall of the fixed shell. In addition, with the cooperation of the telescopic support rods, toothed rings and motors, the length of the telescopic support rods can be adjusted, and the clamping radius can be changed at any time to cope with pipelines of different diameters. The clamping radius can also be changed inside the pipeline. Therefore, it can stably travel in the cylindrical pipeline in cylindrical pipelines with different inner diameters or gradually changing diameters.

[0032] In an embodiment of the present application, preferably, an arc-shaped groove 111 is provided on the gearbox 11 for avoiding the toothed ring 3. The arc-shaped groove 111 communicates with the inner cavity of the gearbox 11. The gear 23 is arranged in the inner cavity of the gearbox 11. The main rotating shaft 231 fixedly connected to the gear 23 passes through the gearbox 11 and is rotatably connected to the fixed rod 21; the structure of the gearbox 11 arranged in this way can effectively transmit power, and transmit the power on the toothed ring 3 to the telescopic support rod 2 effectively through the gear 23.

[0033] In an embodiment of the present application, preferably, a motor gearbox 12 is further provided on the fixed housing 1. The structure of the motor gearbox 12 is the same as that of the gearbox 11. When the motor gear 121 in the motor gearbox 12 meshes with the gear 23 and the toothed ring 3, the motor gear 121 also meshes with the toothed ring 3. The motor gearbox 12 structure arranged in this way can effectively transmit power, and effectively transmit the power of the motor 122 to the toothed ring 3 through the motor gear 121.

[0034] In an embodiment of the present application, preferably, a motor bracket is fixedly provided on the outer wall of the motor gearbox 12, and a motor 122 is fixedly provided in the motor bracket. The motor bracket is fixedly connected to the motor gearbox 12. The motor 122 adopts a stepping motor or a servo motor, which can make the rotation more accurate.

[0035] In an embodiment of the present application, preferably, a positioning ring 13 is fixedly provided on the outer wall of the fixed housing 1. The positioning ring 13 is connected to the surface of the gearbox 11 where the arc-shaped groove 111 is opened. The outer wall of the positioning ring 13 abuts against the inner wall of the bearing ring 4. Therefore, the cooperation between the positioning ring 13 and the bearing ring 4 can make the positioning of the bearing ring 4 more accurate, preventing the bearing ring 4 from shifting in the radial direction or rotating in the circumferential direction. When the toothed ring 3 meshes with the gear 23, the groove 131 provided on the positioning ring 13 is fitted with the convex ring 41 provided on the bearing ring 4. The cooperation between the groove 131 and the convex ring 41 is, on the one hand, a measure to lock the bearing ring 4, and on the other hand, it can determine whether the bearing ring 4 is in place. In addition, a related structure of a locking pin and a locking tongue can also be provided on the bearing ring 4 for secondary locking. The related structure of the locking pin and the locking tongue is a prior art and will not be elaborated here.

[0036] In an embodiment of the present application, preferably, the end face of the positioning ring 13 away from the gearbox 11 is provided with a chamfer 132, which can facilitate the sleeving of the bearing ring 4 onto the positioning ring 13.

[0037] In an embodiment of the present application, preferably, the inner wall of the toothed ring 3 is rotatably connected to the bearing ring 4 through a bearing. The toothed ring 3 extends out of the outer wall of the bearing ring 4, and the tooth surface of the toothed ring 3 is provided on the end face of the part of the toothed ring 3 that extends out of the bearing ring 4. In this way, the tooth surface of the toothed ring 3 extends out of the bearing ring 4, which can facilitate the tooth surface of the toothed ring 3 to pass through the arc-shaped groove 111 and mesh with the gear 23 in the gearbox 11.

[0038] In an embodiment of the present application, preferably, the gear 23 and the motor gear 121 are provided as bevel gears, and the tooth surface of the toothed ring 3 is provided as a helical tooth surface to increase the meshing area.

[0039] In an embodiment of the present application, preferably, a flange 211 is fixedly provided at the end of the fixed rod 21. The flange 211 is fixedly connected to the gearbox 11 by bolts. The driving shaft 231 is rotatably connected to the flange 211 through a flange bearing inside the flange 211. In this way, on the one hand, the flange 211 can firmly fix the fixed rod 21 on the gearbox 11, and on the other hand, the main rotating shaft 231 can rotatably extend into the fixed rod 21 to transmit power, so as to enable the telescopic support rod 2 to telescope.

[0040] In an embodiment of the present application, preferably, a driven rotating shaft 232 is provided inside the driving shaft 231. The telescopic rod 22 and the driven rotating shaft 232 are provided with a telescopic structure of two or more levels. Spline grooves are provided on the inner walls of the driving shaft 231 and the driven rotating shaft 232. The end of the driven rotating shaft 232 near the gear 23 is a spline 201. The cooperation of the spline groove and the spline 201 enables the driving shaft 231 and the driven rotating shaft 232 to rotate simultaneously. The outer walls of the driving shaft 231 and the driven rotating shaft 232 are provided as threads, that is, the driving shaft 231 and the driven rotating shaft 232 are provided as screw rod structures. A nut seat 202 is provided at the end of the telescopic rod 22 near the gear 23. The cooperation of the thread and the nut seat 202 enables the telescopic rod 22 to telescope. A fixing pin is provided between the fixed rod 21 and the telescopic rod 22 to prevent relative circumferential rotation. In this way, the telescopic rod 22 will not generate circumferential rotation. An end bearing 203 is provided at the end of the telescopic rod 22 provided with the roller 221 and is rotatably connected to the driven rotating shaft 232 inside it. In this way, it can effectively drive the driven rotating shaft 232 to overcome the friction between the spline groove and the spline 201, so that the telescopic rod 22 can drive the driven rotating shaft 232 to telescope when the telescopic rod 22 telescopes.

[0041] When it is necessary to use the clamping diameter adjustable X-ray flaw detector of the present utility model, remove the bearing rings 4 at both ends of the fixed shell 1, lift the upper shell 14, place the head 5 of the X-ray flaw detector in the fixed cavity inside the fixed shell 1, then close the upper shell 14 and the lower shell 15, put the bearing ring 4 on the positioning ring 13 and lock them relative to each other. At this time, the toothed ring 3 is engaged with the gear 23. Start the motor 122 to drive the toothed ring 3 to rotate. The toothed ring 3 drives the gear 23 to rotate. The rotation of the gear 23 causes the telescopic support rod 2 to telescope. When the telescopic support rod 2 contracts to a length that can be placed inside the pipeline, place the whole device into the cylindrical pipeline, and then control the telescopic support rod 2 to extend, so that the rollers 221 at the tops of all the telescopic support rods 2 are in contact with the inner wall of the pipeline, and the device can be stably displaced inside the pipeline.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A clamping diameter adjustable X-ray flaw detector, characterized in that, It includes a fixed housing (1), a telescopic support rod (2), a toothed ring (3) and a bearing ring (4). A fixed cavity adapted to the head of an X-ray flaw detector is provided inside the fixed housing (1). A circumferentially arranged gearbox (11) is fixedly provided on the outer wall of the fixed housing (1). The telescopic support rod (2) includes a fixed rod (21) and a telescopic rod (22) connected to each other. The gearbox (11) is fixedly connected to the fixed rod (21). A roller (221) is provided at the end of the telescopic rod (22). A gear (23) provided at the end of the fixed rod (21) meshes with the toothed ring (3) inside the gearbox (11). When the gear (23) rotates, it can control the telescopic rod (22) to extend and retract from the fixed rod (21). The telescopic direction of the telescopic rod (22) is consistent with the radial direction of the fixed housing (1). The toothed ring (3) is rotatably provided on the outer wall of the bearing ring (4). The bearing ring (4) is slidably provided on the outer wall of the fixed housing (1) and can be removed from the fixed housing (1). When the toothed ring (3) meshes with the gear (23), the bearing ring (4) is locked in sliding on the outer wall of the fixed housing (1).

2. The adjustable clamping diameter X-ray flaw detector according to claim 1, wherein An arc-shaped groove (111) is provided on the gearbox (11) for avoiding the toothed ring (3). The arc-shaped groove (111) communicates with the inner cavity of the gearbox (11). The gear (23) is provided in the inner cavity of the gearbox (11). A main rotating shaft (231) fixedly connected to the gear (23) passes through the gearbox (11) and is rotatably connected to the fixed rod (21).

3. The adjustable clamping diameter X-ray flaw detector according to claim 2, wherein, An electric motor gearbox (12) is further provided on the fixed housing (1). When the gear (23) meshes with the toothed ring (3), the electric motor gear (121) inside the electric motor gearbox (12) also meshes with the toothed ring (3).

4. The adjustable clamping diameter type X-ray flaw detector according to claim 3, characterized in that, An electric motor bracket is fixedly provided on the outer wall of the electric motor gearbox (12). An electric motor (122) is fixedly provided inside the electric motor bracket. The electric motor (122) is a stepper motor or a servo motor.

5. The adjustable clamping diameter X-ray flaw detector according to claim 3, characterized in that, A positioning ring (13) is fixedly provided on the outer wall of the fixed housing (1). The positioning ring (13) is connected to the surface of the gearbox (11) where the arc-shaped groove (111) is opened. The outer wall of the positioning ring (13) abuts against the inner wall of the bearing ring (4). When the toothed ring (3) meshes with the gear (23), a groove (131) provided on the positioning ring (13) is engaged with a convex ring (41) provided on the bearing ring (4).

6. The adjustable clamping diameter X-ray flaw detector according to claim 5, characterized in that, The end face of the positioning ring (13) away from the gearbox (11) is provided with a chamfer (132).

7. The adjustable clamping diameter X-ray flaw detector according to claim 5, characterized in that, The inner wall of the toothed ring (3) is rotatably connected to the bearing ring (4) through a bearing. The toothed ring (3) extends out of the outer wall of the bearing ring (4). The tooth surface on the toothed ring (3) is provided on the end face of the part of the toothed ring (3) that extends out of the bearing ring (4).

8. The clamp diameter adjustable X-ray flaw detector according to claim 7, wherein, The gear (23) and the electric motor gear (121) are provided as bevel gears. The tooth surface of the toothed ring (3) is provided as a helical tooth surface.

9. The adjustable clamping diameter type X-ray flaw detector according to claim 2, characterized in that, A flange plate (211) is fixedly provided at the end of the fixed rod (21). The flange plate (211) is fixedly connected to the gearbox (11). The main rotating shaft (231) is rotatably connected to the flange plate (211) through a flange bearing inside the flange plate (211).

10. The adjustable clamping diameter X-ray flaw detector according to claim 8, characterized in that, A driven rotating shaft (232) is arranged inside the main rotating shaft (231). Spline grooves are provided on the inner walls of the main rotating shaft (231) and the driven rotating shaft (232). The end of the driven rotating shaft (232) near the gear (23) is a spline (201). The outer walls of the main rotating shaft (231) and the driven rotating shaft (232) are threaded. A nut seat (202) is provided at the end of the telescopic rod (22) near the gear (23). A fixing pin is provided between the fixing rod (21) and the telescopic rod (22) to prevent relative circumferential rotation. The end of the telescopic rod (22) provided with a roller (221) is rotationally connected to the driven rotating shaft (232) inside it through an end bearing.

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