Lift-off device, series sweeping support assembly and flaw detection vehicle

Abstract

The utility model discloses a lift-off device, which belongs to the technical field of steel rail flaw detection and comprises a fixing plate, a mounting component and an elastic connecting rod component. The top of the mounting assembly is rotatably connected with two ends of the fixing plate, and the bottom of the mounting assembly is a mounting part; one end of the elastic connecting rod assembly is elastically connected with the fixing plate, and the other end is slidably connected with the bottom of the mounting assembly. The utility model further comprises a series sweeping bracket assembly and a flaw detection car. The utility model has the beneficial effects that the lift-off device can enable the detection probe to be tightly attached to the steel rail during flaw detection and reach a stable state when testing on the steel rail, and the probe is lifted at obstacles such as bulges to keep a safe distance from the steel rail, so that equipment damage caused by direct contact with the obstacles on the surface of the steel rail is avoided; the service life of detection equipment is prolonged, and the equipment maintenance and replacement cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rail flaw detection technical field, especially, is a kind of lifting device. BACKGROUND

[0002] Rail is an important component of railway track, with the promotion of train speed and the running of heavy-haul train, the damage to track is increasing, thereby affecting the train safety. With the development of railway construction, the use environment of rail is increasingly complex, and the comprehensiveness requirement of rail flaw detection is higher and higher. The traditional flaw detection method has detection blind area, and in modern rail flaw detection work, usually multiple devices are needed to work cooperatively, and the serial scanning support can carry multiple probes, and is seamlessly connected with flaw detection vehicle, detection system and other devices to realize intelligent flaw detection operation.

[0003] The serial scanning support can realize the simultaneous work of multiple probes, and a large amount of flaw detection data can be obtained by one scanning, which greatly improves the flaw detection work efficiency. For example, CN202320704172.1-steel rail weld integrated flaw detector capable of detecting in reverse direction.

[0004] However, in rail flaw detection and other operations, there may be turnout, unevenness, protrusion or debris on the surface of rail, and if the serial scanning support cannot keep a safe distance from the obstacles, the equipment may be damaged; and there may be different rail types, different line conditions and different detection environments, which cannot realize good coupling with different rails, have poor adaptability and affect the flaw detection effect.

[0005] The information disclosed in this BACKGROUND section is only for the purpose of increasing the understanding of the background of the utility model and should not be regarded as an acknowledgment or any form of suggestion that it forms prior art of this utility model. CONTENT OF UTILITY MODEL

[0006] The utility model solves the technical problem that the current serial scanning support cannot avoid obstacle area and has poor adaptability, which affects the flaw detection effect.

[0007] The utility model solves the above technical problems by the following technical means:

[0008] The lifting device comprises a fixed plate, a mounting assembly, an elastic connecting rod assembly; the top of the mounting assembly is rotatably connected with both ends of the fixed plate, and the bottom of the mounting assembly is an installation portion; the elastic connecting assembly comprises an elastic member, a connecting rod body and a rocker; one end of the elastic member is connected with the fixed plate, and the other end is connected with the top of the connecting rod body; the middle part of the connecting rod body is rotatably connected with the fixed plate, the bottom end of the connecting rod body is rotatably connected with the middle part of the rocker, and both ends of the rocker are slidably connected with the bottom of the mounting assembly.

[0009] The utility model discloses, elastic connecting rod assembly and fixed plate are elastic connection, can through elastic member tensile connecting rod body's top, the bottom of connecting rod body and swing lever linkage, make the probe of string scanning support bottom and the steel rail close adhere its on the steel rail test reaches stable state, can adapt to different track, improve the versatility and applicability of equipment, when the elastic member is further stretched after the external force pulls simultaneously, connecting rod body rotates, linkage swing lever, make the probe of string scanning support bottom and the steel rail disengage, can make detection probe rise at the convexity etc. Obstacle at this time, keep with the steel rail keeps the safe distance, avoid the direct contact steel rail surface obstacle and cause equipment damage, prolong the service life of detection equipment, reduce equipment maintenance and replacement cost.

[0010] Preferably, the top surface of the fixed plate is connected to the first connecting plate at both ends, and the mounting assembly is connected to the side surface of the first connecting plate.

[0011] Preferably, the mounting assembly comprises a first hanging ear, a second hanging ear, a mounting screw, and a compression spring; the top of the first hanging ear and the second hanging ear is movably penetrated by the mounting screw, the end of the mounting screw is connected to the fixed plate, and the compression spring is sleeved on the mounting screw and located between the first hanging ear and the second hanging ear and between the first hanging ear and the fixed plate.

[0012] The compression spring can make the forces on both sides of the string scanning support even, the probe contacts the middle part of the steel rail, and ensures the flaw detection effect.

[0013] Preferably, the elastic member is a spring, and the spring is always in a stretched state.

[0014] Preferably, the elastic connecting assembly further comprises a limiting plate, the limiting plate is fixedly connected to the fixed plate, and the limiting plate abuts against the side surface of the connecting rod body.

[0015] During the movement, if the hook falls off, the connecting rod body can still be kept in a vertical state due to the limiting plate, the probe adheres to the steel rail and will not be separated.

[0016] Preferably, a first shaft is connected to the fixed plate, a second shaft is connected to the top of the connecting rod body, and both ends of the elastic member are connected to the first shaft and the second shaft, respectively.

[0017] Preferably, the elastic connecting rod assembly further comprises a hook, a first hanging rod, and a second hanging rod; one end of the hook is rotatably connected to the second shaft, the first hanging rod and the second hanging rod are fixedly connected to the fixed plate, and the first hanging rod and the second hanging rod are located on both sides of the connecting rod body, respectively; the other end of the hook is provided with a groove adapted to the first hanging rod and the second hanging rod.

[0018] When the string scanning support is in the detection state, the hook is hung together with the first hanging rod, so that the probe at the bottom of the string scanning support is closely attached to the rail and tests on the rail to reach a stable state.When passing through the turnout, due to the large height difference, the hook is clamped on the second hanging rod at the other end at this time, the top of the connecting rod body rotates, the bottom rotates, and the rocker moves upward to one side, thereby lifting the probe at the bottom of the string scanning support, so that the turnout can be safely passed. After passing through the turnout, the hook can be released, and due to the tension of the tension spring, the connecting rod body returns to the detection state, so that the rail and the probe are closely attached again. Reducing the direct contact between the detection personnel and the rail, reducing the safety risk caused by the movement of the rail, the passing of the train and other factors in the operation process, providing a safer working environment for the detection personnel, and at the same time helping to ensure the safety of railway operation.

[0019] Preferably, the middle part of the connecting rod body is rotatably connected with the fixed plate through a third shaft, and the distance between the first hanging rod and the second shaft is greater than the distance between the second hanging rod and the second shaft.

[0020] The string scanning support assembly comprises the lifting device and the string scanning support, the bottom of the mounting assembly of the lifting device is connected with the string scanning support, and the bottom of the string scanning support is connected with a plurality of probes.

[0021] The flaw detection vehicle comprises the string scanning support assembly and a vehicle body, and the string scanning support assembly is connected with the vehicle body.

[0022] The utility model discloses the advantages are:

[0023] In the utility model, the elastic connecting rod assembly and the fixed plate are elastically connected, the top of the connecting rod body can be stretched through the elastic member, the bottom of the connecting rod body is linked with the rocker, so that the probe at the bottom of the string scanning support is closely attached to the rail and tests on the rail to reach a stable state, different tracks can be adapted, and the versatility and applicability of the equipment are improved;When the elastic member is further stretched by external force, the connecting rod body rotates, the rocker is linked, the probe at the bottom of the string scanning support is separated from the rail, the detection probe can be lifted at the protrusion and other obstacles at this time, a safe distance is kept from the rail, direct contact with the obstacles on the surface of the rail is avoided, equipment damage is avoided, the service life of the detection equipment is prolonged, and equipment maintenance and replacement costs are reduced.

[0024] The direct contact between the detection personnel and the rail is reduced, the safety risk caused by the movement of the rail, the passing of the train and other factors in the operation process is reduced, a safer working environment is provided for the detection personnel, and the safety of railway operation is also helped.

[0025] In the process of movement, if the hook falls off, the connecting rod body can still be kept in the vertical state due to the existence of the limiting plate, the probe is attached to the rail and will not be separated, and good coupling between the probe and the rail is ensured during detection.

[0026] The device is simple to install and easy to operate; the lift-off device can automatically adjust the position and angle of the probe according to the actual situation of the rail surface, and ensure that the probe and the rail surface always maintain a good coupling state, which is not affected by the surface condition. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic diagram of the lift-off device of the embodiment of the utility model;

[0028] Figure 2 is a structural schematic diagram of the lift-off device of the embodiment of the utility model;

[0029] Figure 3 is a working schematic diagram of the lift-off device of the embodiment of the utility model Figure 1 ;

[0030] Figure 4 is a working schematic diagram of the lift-off device of the embodiment of the utility model Figure 2 ;

[0031] Figure 5 is a connection schematic diagram of the string scanning support assembly of the embodiment of the utility model;

[0032] Figure 6 is Figure 5 a guarantee schematic diagram;

[0033] Figure 7 is a working schematic diagram of the string scanning support assembly of the embodiment of the utility model Figure 1 ;

[0034] Figure 8 is a working schematic diagram of the string scanning support assembly of the embodiment of the utility model Figure 2 ;

[0035] Figure 9 is a partial schematic diagram of the flaw detection vehicle of the embodiment of the utility model;

[0036] Mark in the figure:

[0037] 1, lift-off device;

[0038] 11, fixed plate; 111, first connecting plate; 112, first shaft;

[0039] 12, mounting assembly; 121, first lug; 1211, arc-shaped groove; 122, second lug; 123, mounting screw; 124, compression spring;

[0040] 13, elastic connecting rod assembly; 131, elastic member; 132, connecting rod body; 133, rocker; 134, second shaft; 135, third shaft; 136, limiting plate; 137, hook; 138, first hanging rod; 139, second hanging rod;

[0041] 2, string scanning support; 3, track; 4, vehicle body. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0043] Embodiment one:

[0044] As shown in Figure 1 , as shown in Figure 5 , the lifting device 1 includes a fixedly arranged fixed plate 11, a mounting assembly 12 for connecting the string scanning support 2, and an elastic connecting rod assembly 13 for driving the string scanning support 2 to separate from the track 3. The top of the mounting assembly 12 is rotatably connected to both ends of the fixed plate 11, and the bottom of the mounting assembly 12 is an installation portion for connecting the string scanning support 2. The probe wheel at the bottom of the string scanning support 2 is arranged to roll. One end of the elastic connecting rod assembly 13 is elastically connected to the fixed plate 11, and the other end is slidingly connected to the bottom of the mounting assembly 12.

[0045] Specifically, as shown in Figure 2 , the fixed plate 11 is fixedly connected to the vehicle body 4 of the flaw detection vehicle and can be fixed by bolts. The fixed plate 11 is a long strip-shaped plate structure, and the first connecting plate 111 is connected to both ends of the top surface of the fixed plate 11. The side surface of the first connecting plate 111 is used to connect the mounting assembly 12.

[0046] As shown in Figure 2 , Figure 6As shown, the mounting assembly 12 comprises a first hanging ear 121, a second hanging ear 122, a mounting screw 123, and a compression spring 124. The first hanging ear 121 and the second hanging ear 122 are both plate-shaped structures, and the first hanging ear 121 and the second hanging ear 122 are arranged at intervals. The top of the first hanging ear 121 and the top of the second hanging ear 122 are penetrated by the mounting screw 123, and the mounting screw 123 is threadedly connected with the first connecting plate 111 on the fixed plate 11. The top of the first hanging ear 121 and the top of the second hanging ear 122 can rotate along the mounting screw 123. The bottom of the first hanging ear 121 and the bottom of the second hanging ear 122 are connected with the string-sweeping support 2. In this embodiment, the two ends of the string-sweeping support 2 are connected through the mounting assembly 12. The compression spring 124 is sleeved on the mounting screw 123 and is located between the first hanging ear 121 and the second hanging ear 122 and between the first hanging ear 121 and the first connecting plate 111, respectively. The compression spring 124 can make the forces on the two sides of the string-sweeping support 2 uniform. The bottom of the first hanging ear 121 and the side surface away from the second hanging ear 122 are connected with the end of the elastic connecting rod assembly 13.

[0047] As shown in Figure 2 , Figure 6 , the elastic connecting rod assembly 13 comprises an elastic member 131, a connecting rod body 132, and a rocker 133. The first shaft 112 is fixedly connected to the fixed plate 11. The top of the connecting rod body 132 is connected to the second shaft 134. In this embodiment, the elastic member 131 is a spring, which is always in a stretched state. The two ends of the elastic member 131 are hooked on the first shaft 112 and the second shaft 134, respectively. The upper half of the connecting rod body 132 is rotationally connected to the side surface of the fixed plate 11 through the third shaft 135. The bottom of the connecting rod body 132 is rotationally connected to the rocker 133. The two end side surfaces of the rocker 133 are connected with a driving rod 1331. The driving rod 1331 is perpendicularly connected with the rocker 133. The bottom of the first hanging ear 121 is provided with an arc-shaped slot 1211. The driving rod 1331 is slidingly connected in the arc-shaped slot 1211.

[0048] As shown in Figure 2 , Figure 6 , the elastic connecting rod assembly 13 further comprises a limiting plate 136. The limiting plate 136 is fixedly connected to the bottom surface of the fixed plate 11. The side surface of the limiting plate 136 abuts against the side surface of the connecting rod body 132, so that the connecting rod body 132 remains in a vertical state, which keeps the probe wheel at the bottom of the string-sweeping support 2 effectively coupled with the steel rail.

[0049] As shown in Figure 2 , Figure 6As shown, the elastic linkage assembly 13 also includes a hook 137, a first hanging rod 138, and a second hanging rod 139. One end of the hook 137 is rotatably connected to the third shaft 135, and the other end of the hook 137 has two grooves, which can respectively fit and hook onto the first hanging rod 138 and the second hanging rod 139. The first hanging rod 138 and the second hanging rod 139 are respectively fixed to the side of the fixing plate 11 and located on both sides of the linkage body 132. The distance between the first hanging rod 138 and the second shaft 134 is greater than the distance between the second hanging rod 139 and the second shaft 134. When the hook 137 is located as shown... Figure 2 When the position shown is such that the hook 137 is engaged with the first hanging rod 138, the connecting rod body 132 remains vertical, and the probe wheel at the bottom of the sweeping bracket 2 is effectively coupled with the rail; when the hook 137 rotates counterclockwise, after the hook 137 is hooked onto the second hanging rod 139, the top of the connecting rod body 132 also rotates counterclockwise, pulling the spring to extend, and the bottom of the connecting rod body 132 also rotates counterclockwise, pulling the rocker arm 133 to move diagonally upward, thereby pulling the sweeping bracket 2 up, so that the probe wheel is disengaged from the rail, so as to smoothly leave the obstacle.

[0050] The working process of this embodiment:

[0051] like Figure 3 As shown, when the elastic element 131 is stretched, the top of the connecting rod body 132 is stretched by the spring and tends to move to the right. The part of the connecting rod body 132 located below the third axis 135 tends to move to the left, but is abutted by the limiting plate 136. At the same time, the hook 137 is hooked together with the first hanging rod 138, which can also offset part of the spring force, forcing the connecting rod body 132 to be in a roughly vertical state. The bottom of the connecting rod body 132 is connected to the rocker arm 133, and the two ends of the rocker arm 133 are connected to the sweeping bracket 2, so that the probe at the bottom of the sweeping bracket 2 is in close contact with the rail and reaches a stable state when tested on the rail. During the movement, if the hook 137 falls off, due to the presence of the limiting plate 136, the connecting rod body 132 can still be kept in a vertical state, and the probe is in contact with the rail and will not fall off. When passing through a turnout, due to the large height difference, the hook 137 is then hooked onto the second hanging rod 139 at the other end, as shown. Figure 4 As shown, the top and bottom of the connecting rod body 132 rotate counterclockwise, causing the rocker arm 133 to move to the upper right. This causes the mounting assembly 12 to rotate around the mounting screw 123 at the top, thereby raising the bottom of the mounting assembly 12 and raising the probe at the bottom of the sweep bracket 2. At this point, it can safely pass through the turnout. The spring is stretched, and the limit plate 136 can also prevent the hook 137 from loosening and rebounding. After passing through the turnout, the hook 137 can be released. Due to the tension of the stretching spring, the connecting rod body 132 returns to its original position. Figure 3 This condition allows the rail and the probe to make close contact again.

[0052] In the rail defect detection operation, the rail surface may have unevenness, protrusions or debris. The lifting device 1 can lift the detection probe at the protrusion obstacle, keep a safe distance from the rail, avoid direct contact with the rail surface obstacle and cause equipment damage, prolong the service life of the detection equipment, and reduce equipment maintenance and replacement costs.

[0053] The lifting height and position can be flexibly adjusted to adapt to different rail types, different line conditions and different detection environments. Whether in straight tracks, curved tracks or complex areas such as turnout areas, the detection equipment can work stably, improving the versatility and applicability of the equipment.

[0054] The detection personnel directly contact the rail, reducing the safety risks caused by rail movement, train passing and other factors during operation, providing a safer working environment for detection personnel, and helping to ensure the safety of railway operation.

[0055] Example two:

[0056] As shown in Figure 5 , Figure 6 The lifting device 1 and the string scanning bracket 2 in the above embodiment one are included in the string scanning bracket assembly. The bottom of the mounting assembly 12 of the lifting device 1 is connected with the string scanning bracket 2, and the bottom of the string scanning bracket 2 is connected with a plurality of probes.

[0057] As shown in Figure 7 , and referring to Figure 3 , the string scanning bracket 2 is a device for detecting rail defects. When the string scanning bracket is in a detection state, the hook 137 is hung together with the first hanging rod 138, the bottom of the connecting rod body 132 is connected with the rocker 133, and the two ends of the rocker 133 are connected with the string scanning bracket 2, so that the probe at the bottom of the string scanning bracket 2 is closely attached to the rail to test the stable state on the rail. As shown in Figure 8 , and referring to Figure 4 , when passing through the turnout, the hook 137 is clamped on the second hanging rod 139 at the other end, the top of the connecting rod body 132 is counterclockwise rotated, the bottom is also counterclockwise rotated, the rocker 133 is driven to move upward to the right, and the mounting assembly 12 is rotated around the top mounting screw 123, so that the bottom of the mounting assembly 12 is lifted, the probe at the bottom of the string scanning bracket 2 is lifted, and the turnout can be safely passed through. After passing through the turnout, the hook 137 can be released. Due to the tension of the tension spring, the connecting rod body 132 returns to Figure 7 state, so that the rail 3 and the probe are in close contact again.

[0058] The device is simple to install and easy to operate; the lifting device 1 can automatically adjust the position and angle of the probe according to the actual situation of the rail surface, ensure that the probe and the rail surface always maintain a good coupling state, and is not affected by the surface condition

[0059] Embodiment three:

[0060] As shown in Figure 9 The flaw detection vehicle includes the serial scanning support assembly of the above embodiment two and a vehicle body 4. The serial scanning support assembly is connected with the vehicle body 4. Specifically, the fixed plate 11 of the lifting device 1 is connected at the front end or the rear end of the vehicle body 4, so that when the probe wheel is in close contact with the rail, as shown in Figure 7

[0061] This embodiment can also be extended to other flaw detection devices.

[0062] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently; 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 embodiments of the present application.​

Claims

1. Lift-off device, characterized in that The fixing plate, the mounting assembly, and the elastic connecting assembly are included. The top of the mounting assembly is rotatably connected to the two ends of the fixing plate, and the bottom of the mounting assembly is the mounting part. The elastic connecting assembly includes the elastic member, the connecting rod body, and the rocker. One end of the elastic member is connected to the fixing plate, and the other end is connected to the top of the connecting rod body. The middle part of the connecting rod body is rotatably connected to the fixing plate, the bottom end of the connecting rod body is rotatably connected to the middle part of the rocker, and the two ends of the rocker are slidably connected to the bottom of the mounting assembly.

2. The lift device of claim 1, wherein The top surface of the fixing plate is connected to the first connecting plate at both ends.

3. The lift device of claim 1, wherein The mounting assembly includes the first hanging ear, the second hanging ear, the mounting screw, and the compression spring. The top of the first hanging ear and the second hanging ear is movably penetrated by the mounting screw, the end of the mounting screw is connected to the fixing plate, and the compression spring is sleeved on the mounting screw and located between the first hanging ear and the second hanging ear and between the first hanging ear and the fixing plate.

4. The lift device of claim 1, wherein The elastic member is a spring, which is always in a stretched state.

5. The lift device of claim 1, wherein, The elastic connecting assembly further includes the limiting plate, which is fixedly connected to the fixing plate and abuts against the side surface of the connecting rod body.

6. The lift device of claim 1, wherein The first shaft is connected to the fixing plate, the top of the connecting rod body is connected to the second shaft, and the two ends of the elastic member are respectively connected to the first shaft and the second shaft.

7. The lift device of claim 6, wherein The elastic connecting assembly further includes the hook, the first hanging rod, and the second hanging rod. One end of the hook is rotatably connected to the second shaft, the first hanging rod and the second hanging rod are fixedly connected to the fixing plate, and the first hanging rod and the second hanging rod are respectively located on the two sides of the connecting rod body. The other end of the hook is respectively provided with a groove matched with the first hanging rod and the second hanging rod.

8. The lift device of claim 7, wherein, The middle part of the connecting rod body is rotatably connected to the fixing plate through the third shaft, and the distance between the first hanging rod and the second shaft is greater than the distance between the second hanging rod and the second shaft.

9. A serial scan bracket assembly characterized by, The lifting device of any one of claims 1-8 and the string scanning support are included. The bottom of the mounting assembly of the lifting device is connected to the string scanning support, and the bottom of the string scanning support is connected to a plurality of probes.

10. A vehicle for detecting flaws, characterized by The string scanning support assembly of claim 9 and the vehicle body are included. The string scanning support assembly is connected to the vehicle body.

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