Overhead line system davit invasion limit judgment device

Abstract

The utility model discloses a contact network davit invasion limit determination device which comprises a bottom plate, a fixed pipe is arranged on the bottom plate, an emitter and a receiver are rotatably installed on the outer wall of the fixed pipe, a lifting rod is inserted into the free end of the top of the fixed pipe in a sliding mode, and a first support arm and a second support arm are rotatably installed at the end, located outside the fixed pipe, of the lifting rod. A first reflecting mirror is rotationally installed on the first supporting arm, and a second reflecting mirror is rotationally installed on the second supporting arm. The overall size is small, the weight is light, and transportation and installation are convenient; the lifting rod and the fixed rod are matched with each other, so that the davits with different heights can be subjected to intrusion detection and judgment, and the adjustment height can be controlled through scale marks on the side wall of the lifting rod; the positions of the two reflectors are adjusted through the supporting arms, light beams emitted by the emitter can be reflected to the receiver, limit invasion judgment can be carried out on the position of the davit under the non-contact condition, damage to the davit or limit invasion equipment during detection is avoided, and the detection precision of limit invasion judgment is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of rail transit tunnel safety protection, in particular to a contact network hanging column intrusion limit determination device. Background Art

[0002] At present, rail transit mostly uses electric locomotives for traction, and the power of electric locomotives comes from the overhead contact network built above the vehicle. The overhead contact network is generally supported and fixed by electric poles. However, due to limited space in tunnels, the overhead contact network is generally fixed by installing a suspender on the top of the tunnel. However, if the length of the suspender is too long, it will collide with the vehicle and cause a safety accident. Therefore, before the vehicle runs, it is necessary to determine the position of the suspender in the tunnel. The existing limit intrusion determination device is realized by physical contact, that is, by setting a frame on the vehicle with the same size as the space required for the safe operation of the locomotive and moving it along the track, and realizing the limit intrusion determination by observing whether the frame will collide with the suspender. However, the frame used for limit intrusion determination is large, which will lead to a large weight and inconvenience in movement and transportation. In addition, due to the large size of the limit intrusion determination frame, in order to ensure safety, the vehicle will move slowly, and if the suspender collides with the limit intrusion frame, the suspender will be damaged. At the same time, because the limit intrusion determination frame will repeatedly collide with the limit intrusion suspender at the same position and deform, the determination result will be inaccurate.

[0003] Therefore, we need to design a contact network suspension pole intrusion limit judgment device to solve these problems. Utility Model Content

[0004] The problem to be solved by the utility model is to provide a device for determining the limit intrusion of a contact network hanging column, which is particularly suitable for determining the limit intrusion of hanging columns in tunnels.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A contact network suspension pole intrusion judgment device comprises a base plate, a fixed tube is arranged on the base plate, a transmitter and a receiver are rotatably mounted on the outer wall of the fixed tube, a lifting rod is slidably inserted into the free end of the top of the fixed tube, a first arm and a second arm are rotatably mounted on the end of the lifting rod located outside the fixed tube, a first reflector is rotatably mounted on the first arm, a second reflector is rotatably mounted on the second arm, and the reflecting surfaces of the first reflector and the second reflector are opposite.

[0007] Preferably, an adjusting gear group is provided in the fixed tube, an adjusting shaft is fixedly provided on the adjusting gear group, the free end of the adjusting shaft rotates and passes through the side wall of the fixed tube, the transmitter and the receiver are rotatably connected to the fixed rod tube through the adjusting shaft, a worm gear is also fixedly provided on the adjusting gear group, a worm is rotatably provided on the inner wall of the fixed tube below the worm gear, and the worm is meshed with the worm gear.

[0008] With such arrangement, the angles of the transmitter and the receiver can be adjusted synchronously by adjusting the gear set, and the worm wheel and worm combination can achieve a small angle rotation of the adjustment shaft.

[0009] Preferably, the lifting rod is provided with an installation groove and a fixing groove, the fixing groove is opened on the side wall of the lifting rod along the extension direction of the lifting rod, the installation groove is located at the free end of the lifting rod, and a synchronous gear set is rotatably installed on the side wall on one side of the installation groove, and the first support arm and the second support arm are rotatably connected to the lifting rod through the synchronous gear set.

[0010] Such an arrangement can realize the extension and retraction of the lifting rod and realize the limit judgment of the hanging columns of different heights.

[0011] Preferably, a transmission gear set is rotatably arranged on the side wall on the other side of the installation groove, a transmission wheel is fixedly arranged on the transmission gear set, a synchronous pulley is rotatably arranged in the first arm and the second arm, and the synchronous pulley is connected to the transmission wheel through a transmission belt set.

[0012] Such an arrangement can achieve synchronous adjustment of the angles of the first reflector and the second reflector.

[0013] Preferably, one end of the worm screw passes through the side wall of the fixing tube and is fixedly provided with a knob.

[0014] Such an arrangement makes it easy to rotate and fix the worm.

[0015] Preferably, an adjusting screw is provided on the side wall of the fixed tube, and the end of the adjusting screw passes through the side wall of the fixed tube and is located in the fixed groove. A positioning bolt is also rotatably provided on the outer wall of the lifting rod, and the positioning bolt is connected to the synchronous gear set after passing through the installation groove.

[0016] With such an arrangement, the adjusting screw can fix the position of the lifting rod, and the positioning screw can adjust the angle of the reflector.

[0017] Preferably, a fixing bolt is provided on the synchronous pulley, and the free end of the fixing bolt passes through the side walls of the first support arm and the second support arm respectively.

[0018] With such arrangement, the first support arm and the second support arm can be fixed by the fixing bolts.

[0019] Preferably, scale lines are also provided on the side wall of the lifting rod.

[0020] Such an arrangement enables accurate control of the extension length of the lifting rod.

[0021] The advantages and positive effects of the utility model are:

[0022] The utility model has a small overall volume and light weight, and is convenient for transportation and handling; the cooperation between the lifting rod and the fixed rod can perform limit intrusion detection and judgment on hanging columns at different heights, and the adjustment height can be controlled by the scale lines on the side walls of the lifting rod; the positions of the two reflectors can be adjusted by the support arms, so that the light beam emitted by the transmitter can be reflected to the receiver, and the position of the hanging column can be judged for limit intrusion without contact, thereby avoiding damage to the hanging column or the limit intrusion equipment during detection, and ensuring the detection accuracy of the limit intrusion judgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the installation structure of the first support arm and the second support arm of the utility model;

[0026] Figure 3 It is a schematic diagram of the worm gear mechanism in the fixed tube of the utility model;

[0027] Figure 4 This is a schematic diagram of the utility model showing that the sling does not intrude during detection;

[0028] Figure 5 This is a schematic diagram of the limit intrusion of the suspending column during detection of the utility model.

[0029] The following are the descriptions of the reference numerals:

[0030] 1. Base plate; 2. Fixed tube; 3. Lifting rod; 4. Fixed slot; 5. Adjusting screw; 6. Adjusting shaft; 7. Adjusting gear set; 8. Worm gear; 9. Worm; 10. Transmitter; 11. Receiver; 12. First arm; 13. First reflector; 14. Second arm; 15. Second reflector; 16. Synchronous gear set; 17. Positioning bolt; 18. Synchronous pulley; 19. Transmission wheel; 20. Transmission gear set; 21. Transmission belt; 22. Fixing bolt; 23. Knob; 24. Mounting slot; 25. Hanging column. DETAILED DESCRIPTION

[0031] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0033] The utility model is further described below in conjunction with the accompanying drawings:

[0034] Example 1: Figure 1-Figure 5As shown, a contact network suspension pole intrusion judgment device comprises a base plate 1, on which a fixed tube 2 is arranged, on the outer wall of which a transmitter 10 and a receiver 11 are rotatably mounted, a lifting rod 3 is slidably inserted into the free end of the top of the fixed tube 2, and a first arm 12 and a second arm 14 are rotatably mounted on the end of the lifting rod 3 located outside the fixed tube 2, a first reflector 13 is rotatably mounted on the first arm 12, and a second reflector 15 is rotatably mounted on the second arm 14, and the reflecting surfaces of the first reflector 13 and the second reflector 15 are opposite.

[0035] Preferably, an adjusting gear group 7 is provided in the fixed tube 2, an adjusting shaft 6 is fixedly provided on the adjusting gear group 7, the free end of the adjusting shaft 6 rotates and penetrates the side wall of the fixed tube 2, the transmitter 10 and the receiver 11 are rotatably connected with the fixed rod tube through the adjusting shaft 6, a worm gear 8 is also fixedly provided on the adjusting gear group 7, a worm 9 is rotatably provided on the inner wall of the fixed tube 2 below the worm gear 8, and the worm 9 is meshed with the worm gear 8. Such a configuration can realize synchronous adjustment of the angles of the transmitter 10 and the receiver 11 through the adjusting gear group 7, and the combination of the worm gear 8 and the worm 9 can realize a small angle rotation of the adjusting shaft 6.

[0036] Preferably, the lifting rod 3 is provided with an installation groove 24 and a fixing groove 4, the fixing groove 4 is opened on the side wall of the lifting rod 3 along the extension direction of the lifting rod 3, the installation groove 24 is located at the free end of the lifting rod 3, and a synchronous gear set 16 is rotatably installed on the side wall on one side of the installation groove 24. The first arm 12 and the second arm 14 are rotatably connected to the lifting rod 3 through the synchronous gear set 16. Such a setting can realize the extension and retraction of the lifting rod 3 and realize the intrusion judgment of the suspension columns 25 at different heights.

[0037] Preferably, a transmission gear set 20 is rotatably provided on the side wall on the other side of the mounting groove 24, a transmission wheel 19 is fixedly provided on the transmission gear set 20, a synchronous pulley 18 is rotatably provided in the first arm 12 and the second arm 14, and the synchronous pulley 18 is connected to the transmission wheel 19 through a transmission belt 21. Such a setting can realize synchronous adjustment of the angles of the first reflector 13 and the second reflector 15.

[0038] Preferably, one end of the worm 9 passes through the side wall of the fixing tube 2 and is fixedly provided with a knob 23 , so that the worm 9 can be easily rotated and fixed.

[0039] Preferably, an adjusting screw 5 is provided on the side wall of the fixed tube 2, and the end of the adjusting screw 5 passes through the side wall of the fixed tube 2 and is located in the fixing groove 4. A positioning bolt 17 is also rotatably provided on the outer wall of the lifting rod 3, and the positioning bolt 17 is connected to the synchronous gear set 16 after passing through the installation groove 24. Such a configuration enables the adjusting screw 5 to fix the position of the lifting rod 3, and the positioning screw can adjust the angle of the reflector.

[0040] Preferably, a fixing bolt 22 is provided on the synchronous pulley 18 , and the free end of the fixing bolt 22 passes through the side walls of the first arm 12 and the second arm 14 , so that the first arm 12 and the second arm 14 can be fixed by the fixing bolt 22 .

[0041] Preferably, scale lines are also provided on the side wall of the lifting rod 3 , so that the extension length of the lifting rod 3 can be accurately controlled.

[0042] The working process of this embodiment is as follows: before work, the device is first installed and fixed on the top of the vehicle through the base plate 1, and then the first arm 12 and the second arm 14 are adjusted according to the width of the suspension column 25 for the intrusion judgment. When adjusting, the positioning bolt 17 is rotated to loosen the positioning bolt 17, and then the angle between the first arm 12 and the second arm 14 is adjusted to ensure that the suspension column 25 can completely pass through the first arm 12 and the second arm 14. At the same time, since the suspension column 25 is not in the same straight line, the suspension column 25 between the first arm 12 and the second arm 14 will swing when the intrusion judgment is made. Therefore, the adjustment of the angle between the first arm 12 and the second arm 14 needs to ensure that the distance between the first reflector 13 and the second reflector 15 exceeds the swing amplitude of the suspension column 25, and then the positioning bolt 17 is tightened to fix the first arm 12 and the second arm 14.

[0043] When adjusting the first arm 12 and the second arm 14, Figure 2 As shown, since the first arm 12 and the second arm 14 are respectively mounted on two gears on the synchronous gear set 16, the rotation angles of the first arm 12 and the second arm 14 are the same during adjustment, and the adjusted first arm 12 and the second arm 14 are always symmetrical along the longitudinal axis of the lifting rod 3.

[0044] After adjusting the angles of the first arm 12 and the second arm 14, the extension length of the lifting rod 3 is adjusted. When adjusting, the sleeve bolt is first loosened, and the adjusting bolt will move out of the fixing groove 4 after loosening. Then the lifting rod 3 is pulled out from the fixing tube 2. When pulling out, the pulled-out length of the lifting rod 3 is confirmed by the scale on the side wall of the lifting rod 3 to prevent the lifting rod 3 from being pulled out too long and colliding with the hanging column 25. After the extension length of the lifting rod 3 is adjusted, the adjusting bolt is tightened so that the free end of the positioning bolt 17 is pushed into the fixing groove 4 to fix the position of the lifting rod 3.

[0045] Finally, the angles of the first reflector 13, the second reflector 15, the transmitter 10 and the receiver 11 are adjusted. When adjusting the angles of the first reflector 13 and the second reflector 15, since the first reflector 13 and the second reflector 15 are both provided with a synchronous pulley 18, and the synchronous pulley 18 is also connected with a fixing bolt 22, the fixing bolt 22 is adjusted and loosened, and then the first reflector 13 is rotated. Since the synchronous pulley 18 and the transmission wheel 19 are both connected together by a transmission belt 21, and the two transmission wheels 19 are driven by a transmission gear set 20, the first reflector 13 and the second reflector 15 are adjusted to rotate in opposite directions, while the rotation angles are the same; and the transmitter 10 and the receiver 11 are respectively mounted on the adjustment shaft 6 on the adjustment gear set 7, and a worm gear 8 and a worm 9 mechanism are also mounted on the adjustment gear set 7. By rotating the worm 9, the worm wheel 8 can be driven to rotate. After the worm wheel 8 rotates, the two adjustment shafts 6 can be driven to rotate through the adjustment gear set 7. The two adjustment shafts 6 rotate in opposite directions and have the same rotation angles.

[0046] By adjusting the first reflector 13, the second reflector 15, the transmitter 10 and the receiver 11, the light beam extending from the transmitter 10 can be Figure 4 As shown, when the light is reflected by the first reflector 13 and the second reflector 15 and enters the receiver 11, the fixing bolts 22 are tightened to fix the angles of the first reflector 13 and the second reflector 15; at the same time, the worm 9 is fixed by the knob 23 to prevent the worm 9 from rotating and driving the transmitter 10 and the receiver 11 to rotate.

[0047] During operation, as the vehicle moves, the suspending posts 25 will pass between the first arm 12 and the second arm 14 one by one. When the length of the suspending posts 25 causes an encroachment limit, the free ends of the suspending posts 25 will be as follows. Figure 5 As shown, the light beam between the two reflectors will be blocked, and when the light beam is blocked, the receiver 11 will lose the signal and send a signal to the vehicle control center to determine that the pole 25 at the current position has violated the limit. When the violating pole 25 passes by, the light beam emitted by the transmitter 10 will be reflected by the reflector and enter the receiver 11, which is convenient for determining whether other poles 25 have violated the limit.

[0048] In this embodiment, non-contact intrusion determination of the suspension column 25 is achieved by turning on and off the photoelectric signal. Compared with the intrusion determination device in contact, it can avoid the damage caused by the collision between the suspension column 25 and the intrusion determination device, thereby reducing maintenance costs. At the same time, the device is small in size and light in weight, which is easy to transport and install.

[0049] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A contact network suspender intrusion determination device, comprising a bottom plate (1), characterized in that: A fixed tube (2) is arranged on the bottom plate (1), a transmitter (10) and a receiver (11) are rotatably mounted on the outer wall of the fixed tube (2), a lifting rod (3) is slidably inserted into the free end of the top of the fixed tube (2), a first arm (12) and a second arm (14) are rotatably mounted on the end of the lifting rod (3) located outside the fixed tube (2), a first reflector (13) is rotatably mounted on the first arm (12), a second reflector (15) is rotatably mounted on the second arm (14), and the reflection surfaces of the first reflector (13) and the second reflector (15) are opposite to each other.

2. A contact network suspender limit determination device according to claim 1, characterized in that: An adjusting gear set (7) is arranged inside the fixed tube (2), an adjusting shaft (6) is fixedly arranged on the adjusting gear set (7), the free end of the adjusting shaft (6) rotates and penetrates the side wall of the fixed tube (2), the transmitter (10) and the receiver (11) are rotatably connected to the fixed rod tube through the adjusting shaft (6), a worm gear (8) is also fixedly arranged on the adjusting gear set (7), a worm (9) is rotatably arranged on the inner wall of the fixed tube (2) below the worm gear (8), and the worm gear (9) is meshed with the worm gear (8).

3. The device for determining the limit intrusion of a contact network suspender according to claim 1, characterized in that: The lifting rod (3) is provided with a mounting groove (24) and a fixing groove (4); the fixing groove (4) is opened on the side wall of the lifting rod (3) along the extension direction of the lifting rod (3); the mounting groove (24) is located at the free end of the lifting rod (3); a synchronous gear set (16) is rotatably mounted on the side wall of one side of the mounting groove (24); the first support arm (12) and the second support arm (14) are rotatably connected to the lifting rod (3) via the synchronous gear set (16).

4. A contact network suspender limit determination device according to claim 3, characterized in that: A transmission gear set (20) is rotatably arranged on the side wall on the other side of the installation groove (24), a transmission wheel (19) is fixedly arranged on the transmission gear set (20), a synchronous belt pulley (18) is rotatably arranged in the first support arm (12) and the second support arm (14), and the synchronous belt pulley (18) and the transmission wheel (19) are connected in a sleeve manner through a transmission belt (21).

5. The device for determining the limit intrusion of a contact network suspender according to claim 2, characterized in that: One end of the worm (9) passes through the side wall of the fixed tube (2) and is fixedly provided with a knob (23).

6. The device for determining the limit intrusion of a contact network suspender according to claim 3, characterized in that: An adjusting screw (5) is arranged on the side wall of the fixing tube (2), and the end of the adjusting screw (5) passes through the side wall of the fixing tube (2) and is located in the fixing groove (4). A positioning bolt (17) is also rotatably arranged on the outer wall of the lifting rod (3), and the positioning bolt (17) passes through the installation groove (24) and is connected to the synchronous gear set (16).

7. The device for determining the limit intrusion of a contact network suspender according to claim 4, characterized in that: A fixing bolt (22) is provided on the synchronous pulley (18), and the free end of the fixing bolt (22) passes through the side walls of the first support arm (12) and the second support arm (14) correspondingly.

8. The contact network suspender limit determination device according to claim 1, characterized in that: The side wall of the lifting rod (3) is also provided with scale lines.

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