Track displacement detection device for electric rail vehicle

Abstract

The utility model discloses an electric rail car track displacement detection device which comprises a shell, a support is arranged in the shell, a shaft rod is arranged between the support and the shell, one end of the shaft rod is connected with an angle sensor, the other end of the shaft rod is rotationally connected with a screw rod, and the screw rod is fixedly connected with the shell. The threaded rod is sleeved with a thread shaft in a threaded mode, and the shaft rod and the thread shaft are connected through a transmission assembly. A layer of steel wire rope is wound on the spool; the moving distance of the spool along the axis of the shaft rod is equal to the outer diameter of the steel wire rope when the spool rotates by one circle; a coil spring assembly is arranged between the shaft rod and the inner wall of the shell. According to the displacement detection device, the thread pitch of the screw is matched with the outer diameter of the steel wire rope, so that the lengths of the steel wire rope output by each circle of the bobbin are consistent, the rotation circle number of the bobbin is detected through the angle sensor, the displacement distance is obtained by multiplying the rotation circle number of the bobbin by the length of each circle of the steel wire rope, and accurate feedback of the displacement amount is achieved. And the high-precision control of the displacement of the electric rail vehicle is ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of displacement detection devices, and in particular to a track displacement detection device for electric railcars. Background Technology

[0002] In certain shooting scenarios, cameras are mounted on trams for easy movement. During the tram's movement, a displacement detection device monitors and controls its distance traveled. Most existing detection devices use a measuring rope connected to the tram, measuring the length of the rope pulled out to determine the displacement distance. However, since the length of each loop of rope varies with the winding radius, this leads to inaccuracies in the displacement distance detection. Therefore, a device with high displacement distance detection accuracy is designed to ensure precise control of the tram. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the existing technology, it is desirable to provide a track displacement detection device for electric railcars. By matching the screw pitch with the outer diameter of the wire rope, the length of the wire rope output per turn of the spool is consistent. Then, the number of turns of the spool is detected by an angle sensor. The displacement distance is obtained by multiplying the number of turns of the spool by the length of the wire rope per turn, thereby achieving accurate displacement detection and ensuring high-precision control of the electric railcar's displacement distance.

[0004] The present invention provides a track displacement detection device for an electric railcar, comprising a housing, a support provided inside the housing, a shaft rotatably disposed between the support and the housing, one end of the shaft being connected to an angle sensor, the other end passing through the support and connected to a screw via a bearing, and the end of the screw away from the shaft being fixedly connected to the inner wall of the housing.

[0005] A spool is threaded onto the screw rod, and the spool rod and the spool rod are fixedly connected by a transmission assembly. A layer of steel wire rope is densely wound around the spool rod from one end to the other end. One end of the steel wire rope is fixedly connected to the spool rod, and the other end passes through the housing and is connected to the electric railcar through a connecting assembly. The distance that the spool rod moves along the axis of the spool rod when it rotates one revolution is equal to the outer diameter of the steel wire rope. A coil spring assembly is provided between the spool rod and the inner wall of the housing.

[0006] Furthermore, a first clamping block is symmetrically fixed at both ends of the bottom of the housing, and a second clamping block is fixedly connected to the outside of the first clamping block by screws. A clamping groove matching the contour of the track is opened between the first clamping block and the second clamping block.

[0007] Furthermore, the angle sensor is disposed at one end of the outer wall of the housing, and a protective cover for protecting the angle sensor is provided on the outer wall of the housing.

[0008] Furthermore, the transmission assembly includes a first connecting frame and a connecting rod. The first connecting frame is fixedly sleeved on one end of the shaft that passes through the support. The connecting rods are symmetrically fixed on both sides of the screw on the spool, and one end of the connecting rod is fixedly connected to the first connecting frame.

[0009] Furthermore, a guide tube is connected to one side of the housing along the tangential direction of the spool, and the wire rope extends out of the housing through the guide tube.

[0010] Furthermore, the connecting assembly includes a connecting plate fixedly connected to the electric railcar, a second connecting frame fixedly mounted on the connecting plate, a first wire clamping block fixedly mounted on the second connecting frame, a second wire clamping block fixedly connected to the first wire clamping block by screws, and a wire clamping groove formed between the first wire clamping block and the second wire clamping block.

[0011] Furthermore, the coil spring assembly includes an end cap and a plurality of coil spring devices connected in series; the end cap is sleeved on the shaft and is connected to the shaft via a gear transmission assembly to increase the output torque of the coil spring assembly;

[0012] The coil spring device includes a mounting sleeve, a mounting cover, and a coil spring; the mounting sleeve is rotatably sleeved on the shaft and fixedly connected to the end cover or the mounting cover of the coil spring device at the next higher level; the mounting cover is rotatably sleeved on the shaft and rotatably connected to the mounting sleeve via a bearing; the mounting cover of the coil spring device at the last level is also fixedly connected to the housing; the coil spring is sleeved on the mounting sleeve, with one end connected to the mounting sleeve and the other end connected to the mounting cover.

[0013] Furthermore, the gear transmission assembly includes a first gear and a second gear; the first gear is rotatably sleeved on the shaft via a bearing and fixedly connected to the end cover; the second gear is fixedly sleeved on the shaft; a transmission shaft is arranged parallel to one side of the shaft, the transmission shaft is rotatably connected to the support via a bearing, and a third gear and a fourth gear are fixedly sleeved on the transmission shaft, the third gear meshing with the first gear and the fourth gear meshing with the second gear.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) The displacement detection device of this utility model is provided with a shaft, a screw and a bobbin; the wire rope on the bobbin is connected to the electric railcar through a connecting component. The wire rope is densely wound on the bobbin from one end to the other to ensure that the length of each turn of wire rope is consistent; when the bobbin is retracted, it moves a distance equal to the outer diameter of the wire rope for each rotation, so that the length of each turn of wire rope released and retracted is consistent; when the electric railcar moves, the angle sensor detects the number of rotations of the bobbin, multiplies it by the length of each turn of wire rope, and thus obtains the displacement distance, ensuring accurate feedback of the displacement distance of the electric railcar, thereby obtaining high-precision control conditions for the displacement of the electric railcar;

[0016] (2) The displacement detection device of this utility model is also provided with a transmission component and a coil spring component; the coil spring component is connected to the shaft through the gear transmission component to improve the output torque of the coil spring component and ensure that the output torque of the coil spring component meets the driving force requirements of the spool to retract the wire rope.

[0017] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0018] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the track displacement detection device for electric railcars.

[0020] Figure 2 This is a schematic diagram of the internal structure of the shell;

[0021] Figure 3 This is a schematic diagram of the front cross-sectional structure of the track displacement detection device for electric railcars.

[0022] Figure 4 A top-view cross-sectional schematic diagram of the track displacement detection device for electric railcars;

[0023] Figure 5 This is a schematic diagram of the structure of a railcar track displacement detection device installed on the track.

[0024] The diagram labels are as follows: 1. Housing; 2. Shaft; 3. Screw; 4. Bollard; 5. Transmission assembly; 6. Connecting assembly; 7. Spring assembly; 8. Gear transmission assembly; 9. Track;

[0025] 11. Support; 12. First clamping block; 13. Second clamping block; 14. Clamping groove; 15. Protective cover; 16. Guide tube;

[0026] 21. Angle sensor;

[0027] 41. Steel wire rope;

[0028] 51. First connecting frame; 52. Connecting rod;

[0029] 61. Connecting plate; 62. Second connecting frame; 63. First wire clamping block; 64. Second wire clamping block;

[0030] 71. End cap; 72. Mounting sleeve; 73. Mounting cover; 74. Coil spring;

[0031] 81. First gear; 82. Second gear; 83. Drive shaft; 84. Third gear; 85. Fourth gear. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0033] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] Please refer to Figures 1-5 The present invention provides a track displacement detection device for an electric railcar, comprising a housing 1, a support 11 fixedly disposed inside the housing 1, a shaft 2 rotatably disposed between the support 11 and the inner wall of the housing 1, one end of the shaft 2 being connected to an angle sensor 21, and the other end passing through the support 11 and rotatably connected to a screw 3 through a bearing, the end of the screw 3 away from the shaft 2 being fixedly connected to the housing 1.

[0035] A spool 4 is threaded onto the screw 3, and the shaft 2 and the spool 4 are fixedly connected by a transmission assembly 5. A layer of steel wire rope 41 is densely wound around the spool 4 from one end to the other. One end of the steel wire rope 41 is fixedly connected to the spool 4, and the other end passes through the housing 1 and is connected to the electric railcar through the connecting assembly 6. The distance that the spool 4 moves along the axis of the shaft 2 in one revolution is equal to the outer diameter of the steel wire rope 41. A coil spring assembly 7 is provided between the shaft 2 and the inner wall of the housing 1.

[0036] In this embodiment, when the displacement of the electric railcar is detected, as the electric railcar moves from near to far, the steel wire rope 41 is pulled by the connecting component 6, and the spool 4 drives the shaft 2 to rotate simultaneously through the transmission component 5. The angle sensor 21 detects the rotation parameters of the shaft 2. Since it moves the same distance as the outer diameter of the steel wire rope in one rotation, the length of the steel wire rope 41 output in each rotation is consistent.

[0037] As the spool 4 rotates, the coil spring assembly 7 begins to accumulate potential energy. When the electric railcar moves closer, the coil spring assembly 7 drives the spool 4 to rotate in the opposite direction and retract the wire rope 41, ensuring that the wire rope 41 is always taut. The displacement distance of the electric railcar is obtained by multiplying the number of rotations of the spool 4 by the length of each rotation of the wire rope 41, ensuring accurate feedback of the electric railcar displacement data and guaranteeing high-precision control of the electric railcar displacement.

[0038] In a preferred embodiment, such as Figure 1 and Figure 5 As shown, first clamping blocks 12 are symmetrically fixed at both ends of the bottom of the housing 1. Second clamping blocks 13 are fixedly connected to the outside of the first clamping blocks 12 by screws. A clamping groove 14 matching the contour of the track 9 is opened between the first clamping blocks 12 and the second clamping blocks 13.

[0039] In this embodiment, the housing 1 is fixedly installed on one end of the track 9 by the cooperation of the first clamping block 12 and the second clamping block 13. The installation is convenient and the fixation is stable, ensuring the accurate data detection output of the detection device.

[0040] In a preferred embodiment, such as Figure 1 and Figure 3 As shown, the angle sensor 21 is disposed at one end of the outer wall of the housing 1. A protective cover for the angle sensor 21 is fixedly disposed on the outer wall of the housing 1 to protect the angle sensor 21 and ensure the safe use environment of the angle sensor 21.

[0041] In a preferred embodiment, such as Figure 3 and Figure 4 As shown, the transmission assembly 5 includes a first connecting frame 51 and a connecting rod 52. The first connecting frame 51 is fixedly sleeved on one end of the shaft 2 that passes through the support 11. The connecting rod 52 is symmetrically fixed on both sides of the screw 3 on the spool 4. One end of the connecting rod 52 is fixedly connected to the first connecting frame 51.

[0042] In this embodiment, the shaft 2 and the bobbin 4 are fixedly connected by the first connecting frame 51 and two connecting rods 52. The gears achieve proportional transmission between them, so that the angle sensor 21 can detect the rotation of the bobbin 4 through the shaft 2.

[0043] In a preferred embodiment, such as Figure 1As shown, a guide tube 16 is connected to one side of the housing 1 along the tangential direction of the spool 4. The wire rope 41 passes through the guide tube 16 and extends out of the housing 1, ensuring the accurate release and retrieval of the wire rope 41.

[0044] In a preferred embodiment, such as Figure 1 and Figure 2 As shown, the connecting assembly 6 includes a connecting plate 61 that is fixedly connected to the electric railcar. A second connecting frame 62 is fixedly mounted on the connecting plate 61. A first wire clamping block 63 is fixedly mounted on the second connecting frame 62. A second wire clamping block 64 is fixedly connected to the first wire clamping block 63 by screws. A wire clamping groove is provided between the first wire clamping block 63 and the second wire clamping block 64 to clamp and fix the wire rope 41.

[0045] In a preferred embodiment, such as Figure 2 and Figure 3 As shown, the coil spring assembly 7 includes an end cap 71 and several coil spring devices connected in series; the end cap 71 is sleeved on the shaft 2 and is connected to the shaft 2 through the gear transmission assembly 8, which is used to increase the output torque of the coil spring assembly 7.

[0046] The coil spring device includes a mounting sleeve 72, a mounting cover 73, and a coil spring 74; the mounting sleeve 72 is rotatably sleeved on the shaft 2 and is fixedly connected to the end cover 71 or the mounting cover 72 of the coil spring device at the next higher level; the mounting cover 73 is rotatably sleeved on the shaft 2 and is rotatably connected to the mounting sleeve 72 through a bearing; the mounting cover 73 of the coil spring device at the last level is also fixedly connected to the housing 1; the coil spring 74 is sleeved on the mounting sleeve 72, with one end fixedly connected to the mounting sleeve 72 and the other end fixedly connected to the mounting cover 73.

[0047] In this embodiment, the coil spring assembly 7 consists of several coil springs 74 connected end-to-end through other auxiliary structures. The first end of the coil spring assembly 7 is connected to the shaft 2, and the second end is connected to the housing 1. This allows the coil spring assembly 7 to accumulate elastic potential energy when the shaft 2 rotates, thus meeting the driving force requirements for the winding of the spool 41.

[0048] In a preferred embodiment, such as Figure 3 and Figure 4 As shown, the gear transmission assembly 8 includes a first gear 81 and a second gear 82; the first gear 81 is rotatably sleeved on the shaft 2 via a bearing and is fixedly connected to the end cover 71; the second gear 82 is fixedly sleeved on the shaft 2; a transmission shaft 83 is arranged parallel to one side of the shaft 2, and the transmission shaft 83 is rotatably connected to the support 11 via a bearing. A third gear 84 and a fourth gear 85 are fixedly sleeved on the transmission shaft 83. The third gear 84 meshes with the first gear 81, and the fourth gear 85 meshes with the second gear 82.

[0049] In this embodiment, when the coil spring assembly 7 releases its elastic potential energy, it drives the first gear 81 to rotate. The first gear 81 drives the second gear 82 to rotate through the third gear 84 and the fourth gear 85. The second gear 82 drives the shaft 2 to rotate. The output torque of the shaft 2 is changed by the gear transmission ratio to meet the driving requirements of the spool 4 and ensure the completion of the wire rope 41 retrieval.

[0050] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0051] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A track displacement detection device for electric railcars, characterized in that, Includes a housing (1), a support (11) is provided inside the housing (1), a shaft (2) is rotatably provided between the support (11) and the housing (1), one end of the shaft (2) is connected to an angle sensor (21), the other end passes through the support (11) and is connected to a screw (3) through a bearing, and the end of the screw (3) away from the shaft (2) is connected to the inner wall of the housing (1); A spool (4) is threaded onto the screw (3), and the shaft (2) and the spool (4) are connected by a transmission assembly (5). A layer of steel wire rope (41) is densely wound from one end to the other on the spool (4). One end of the steel wire rope (41) is connected to the spool (4), and the other end passes through the housing (1) and is connected to the electric railcar through a connecting assembly (6). The distance that the spool (4) moves along the axis of the shaft (2) when it rotates one revolution is equal to the outer diameter of the steel wire rope (41). A coil spring assembly (7) is provided between the shaft (2) and the inner wall of the housing (1).

2. The railcar track displacement detection device according to claim 1, characterized in that, The bottom of the housing (1) is symmetrically provided with first clamping blocks (12) at both ends. The outer side of the first clamping block (12) is connected to a second clamping block (13) by screws. A clamping groove (14) connected to the track (9) is provided between the first clamping block (12) and the second clamping block (13).

3. The railcar track displacement detection device according to claim 1, characterized in that, The angle sensor (21) is disposed at one end of the outer wall of the housing (1), and a protective cover (15) is provided on the outer wall of the housing (1) to protect the angle sensor (21).

4. The railcar track displacement detection device according to claim 1, characterized in that, The transmission assembly (5) includes a first connecting frame (51) and a connecting rod (52). The first connecting frame (51) is fixedly sleeved on one end of the shaft (2) that passes through the support (11). The connecting rod (52) is symmetrically arranged on both sides of the screw (3) on the spool (4). One end of the connecting rod (52) is connected to the first connecting frame (51).

5. The railcar track displacement detection device according to claim 1, characterized in that, A guide tube (16) is connected to one side of the housing (1) along the tangential direction of the spool (4), and the wire rope (41) extends out of the housing (1) through the guide tube (16).

6. The track displacement detection device for electric railcars according to claim 1, characterized in that, The connecting assembly (6) includes a connecting plate (61) connected to the electric railcar. A second connecting frame (62) is provided on the connecting plate (61). A first wire clamping block (63) is provided on the second connecting frame (62). A second wire clamping block (64) is connected to the first wire clamping block (63) by screws. A wire clamping groove is provided between the first wire clamping block (63) and the second wire clamping block (64).

7. The railcar track displacement detection device according to claim 1, characterized in that, The coil spring assembly (7) includes an end cap (71) and several coil spring devices connected in series; the end cap (71) is sleeved on the shaft (2) and is connected to the shaft (2) through a gear transmission assembly (8) to change the output torque of the coil spring assembly (7); The coil spring device includes a mounting sleeve (72), a mounting cover (73), and a coil spring (74); the mounting sleeve (72) is rotatably sleeved on the shaft (2) and fixedly connected to the end cover (71) or the mounting cover (73) of the coil spring device at the next higher level; the mounting cover (73) is rotatably sleeved on the shaft (2) and rotatably connected to the mounting sleeve (72) through a bearing; the mounting cover (73) of the coil spring device at the last level is also connected to the housing (1); the coil spring (74) is sleeved on the mounting sleeve (72), with one end connected to the mounting sleeve (72) and the other end connected to the mounting cover (73).

8. The railcar track displacement detection device according to claim 7, characterized in that, The gear transmission assembly (8) includes a first gear (81) and a second gear (82); the first gear (81) is rotatably sleeved on the shaft (2) through a bearing and connected to the end cover (71); the second gear (82) is sleeved on the shaft (2); a transmission shaft (83) is arranged parallel to one side of the shaft (2), the transmission shaft (83) is rotatably connected to the support (11) through a bearing, a third gear (84) and a fourth gear (85) are fixedly sleeved on the transmission shaft (83), the third gear (84) meshes with the first gear (81), and the fourth gear (85) meshes with the second gear (82).

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