A restricted fence and an alarm system for approaching high-voltage power transmission lines

Abstract

The present invention provides a restricted traffic fence and an alarm system for approaching high-voltage power transmission lines. The restricted traffic fence includes: a height limiting component and two restricted traffic rod components, the restricted traffic rod component includes a base, a rotating device, a shift lever and a rotating shaft, a mounting plate is installed on the base, the rotating shaft is rotatably mounted on the mounting plate, the bottom end of the shift lever is installed on the rotating shaft, and the rotating device is used to drive the rotating shaft to rotate; the height limiting component includes a limit rope and a plurality of warning members. The present invention can complete the restricted traffic function and height limiting function of a vehicle through a restricted traffic fence. The alarm system approaching the high-voltage power transmission line will detect the power transmission line, and the alarm device will issue a voice reminder and alarm to remind the driver.

Description

Technical Field

[0001] The present invention relates to the technical field of fences, and in particular to a restricted access fence and an alarm system for approaching high-voltage power transmission lines. Background Art

[0002] The restricted fence is a tool used to restrict traffic. In the prior art, the restricted equipment includes a restricted pole, a mounting frame and a driving device, the restricted pole is rotatably mounted on the mounting frame, and the driving device is used to drive the restricted pole to rotate to open or release the road.

[0003] There are various construction vehicles traveling on the construction site. During the construction preparation period, the restricted fence can control the construction vehicles entering and leaving the construction site to ensure the orderly production of the construction site. However, when faced with vehicle height restrictions, for example, when there are power transmission lines above the construction site, the restricted fence cannot limit the height of passing vehicles. It is necessary to configure a height limiting device to achieve the purpose of height restriction. How to design the restricted fence to switch to achieve the dual functions of restriction and height restriction needs further research.

[0004] Therefore, it is necessary to provide a new restricted fence to solve the above-mentioned technical problems. Summary of the invention

[0005] The present invention provides a traffic restriction fence, which solves the technical problem that the traffic restriction fence in the prior art cannot switch to realize the dual functions of traffic restriction and height restriction.

[0006] In order to solve the above technical problems, the present invention provides a restricted travel fence, comprising: a height limiting component and two restricted travel bar components;

[0007] The limit rod assembly includes a base, a rotating device, a shift rod and a rotating shaft, wherein a mounting plate and the rotating device are installed on the base at intervals, the rotating shaft is rotatably installed at the bottom end of the shift rod, one end of the rotating shaft is rotatably connected to the mounting plate, and the other end of the rotating shaft is connected to the output end of the rotating device;

[0008] The height limiting assembly includes a limit rope and a plurality of warning members, and the plurality of warning members are sequentially spaced on the limit rope;

[0009] When the restricted fence is in a restricted state, the two gear bars are arranged horizontally;

[0010] When the restricted fence is in a height-limited state, the two bars are vertically arranged, and the two ends of the limit rope are respectively assembled and connected with the top ends of the two bars to form a door-type roadblock structure;

[0011] The gear lever comprises a bottom column and a rod body, wherein the bottom column is rotatably mounted on the bottom end of the rod body, and the rotating shaft is rotatably mounted on the bottom column;

[0012] The restricted fence also includes a lamp rack, which is mounted on the rod body; the two ends of the limit rope are respectively connected to the top ends of the two rod bodies in a rotatable assembly;

[0013] The restricted fence further includes two secondary bevel gears, which are arranged in one-to-one correspondence with the rod body and are fixed on the rod body; the restricted rod assembly further includes a connecting frame, which is slidably mounted on the base;

[0014] The rotating device includes a motor, a square shaft and a main bevel gear. The motor is installed on the base through the connecting frame. The square shaft is connected to the driving shaft of the motor. The main bevel gear is installed on the driving shaft. A square cavity and a circular cavity that are interconnected are opened in the rotating shaft. The diameter of the square shaft is larger than the diameter of the driving shaft, and the aperture of the square cavity is smaller than the aperture of the circular cavity. The square shaft is assembled with the square cavity.

[0015] Preferably, the restricted fence further comprises two assembly heads, one of the assembly heads is installed in a corresponding one of the rod bodies, a rectangular opening is opened at the bottom end of the rod body, and the rectangular opening is arranged toward the assembly head;

[0016] The height limiting component also includes a connecting rope and a mounting head. The bottom end of the connecting rope is connected to the mounting head, and the top end of the connecting rope passes through the rod body and is connected to the limiting rope.

[0017] Preferably, the mounting head comprises a mounting post and an assembly block, the assembly block is mounted on the mounting post, and the mounting post is connected to the connecting rope;

[0018] The assembly head comprises a rotating seat, an assembly cylinder and a driving block, wherein the assembly cylinder is rotatably mounted in the rod body through the rotating seat, and the driving block is mounted on the assembly cylinder;

[0019] A plug hole is provided at the top of the assembly tube, an arc-shaped limiting groove is provided in the assembly tube, the arc-shaped limiting groove is connected with the plug hole, and the plug hole is in a "Zhong" shape;

[0020] Wherein, the mounting head is installed into the arc-shaped limiting groove from the insertion hole, and the assembly block abuts against the inner wall of the assembly cylinder; a push block is installed on the inner wall of the rod body, and the push block is arranged adjacent to the driving block.

[0021] Preferably, the number of the limiting ropes is two;

[0022] A mounting bracket is arranged at the top end of each rod body, and the limiting rope passes through the mounting bracket through a positioning hole and is connected with the connecting rope.

[0023] Preferably, the restricted traffic fence further comprises two pressure sensors, the two pressure sensors are mounted on a corresponding mounting frame, and the two pressure sensors are located on the upper and lower sides of the positioning hole, and each of the pressure sensors is connected to the motor signal.

[0024] Preferably, a support frame is installed on the top of the base, and when the gear lever is arranged horizontally, the support frame is used to support the gear lever.

[0025] In order to solve the above technical problems, the present invention also provides an alarm system for approaching high-voltage transmission lines, comprising: a detection device, an alarm device and the restricted fence, wherein the detection device is signal-connected to the alarm device.

[0026] Compared with the related art, the restricted traffic fence provided by the present invention has the following beneficial effects:

[0027] When the restricted fence is in the restricted state, the two levers are arranged horizontally; the two levers directly block the entry of vehicles; when entry is allowed, the rotating device drives the corresponding lever to rotate 90 degrees, so that the lever is perpendicular to the base, and vehicles can pass through at this time;

[0028] When the restricted fence is in the height-limited state, there is a preset height difference between the limit rope and the power transmission line. The two levers are vertically arranged, and the two ends of the limit rope are respectively assembled and connected with the top ends of the two levers to form a gate-type roadblock structure. The gate-type roadblock structure can prohibit overheight vehicles from passing through, and finally realize the restriction function and height-limiting function of the vehicle through the switching of a restricted fence. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the structure of the restricted traffic fence provided by the present invention in a restricted traffic state;

[0030] Figure 2 A schematic diagram of the structure of the restricted fence provided by the present invention in a height-restricted state;

[0031] Figure 3 A schematic diagram of the partial structure of the restricted traffic fence provided by the present invention;

[0032] Figure 4 for Figure 3 An enlarged schematic diagram of part A is shown;

[0033] Figure 5 for Figure 4 A partial cross-sectional view is shown;

[0034] Figure 6 A schematic diagram of the state of the rotating device provided by the present invention, wherein: Figure 6 (a) is a schematic diagram of the rotating device in the pitch adjustment state. Figure 6 (b) is a schematic diagram of the rotating device in a rotation adjustment state;

[0035] Figure 7 for Figure 3 An enlarged schematic diagram of part B is shown;

[0036] Figure 8 A partial cross-sectional view of the gear lever provided by the present invention;

[0037] Fig. 9 for Figure 8 The structural schematic diagram of the assembly head shown;

[0038] Fig.10 A schematic diagram of the rotating device provided by the present invention switching from a rotation adjustment state to an unlocking state, wherein: Fig.10 (a) is a schematic diagram of the push block approaching the upper driving block; Fig.10 (b) is a schematic diagram of the push block being close to the lower driving block; Fig.10 (c) is a schematic diagram showing that the push block and the driving block drive the assembly cylinder 72 to rotate so that the assembly block is aligned with the insertion hole;

[0039] Fig.11 for Figure 8 A schematic diagram of the structure in which the mounting head is separated from the assembly barrel;

[0040] Fig.12 for Figure 8 The schematic diagram of the structure of the Y-shaped frame and the mounting column assembly shown;

[0041] Fig.13 A schematic diagram of a usage scenario of the restricted traffic fence provided by the present invention;

[0042] Fig.14 This is a principle block diagram of the restricted traffic fence provided by the present invention.

[0043] Numbers in the figure:

[0044] 1. Limit rod assembly; 11. Base; 12. Rotating device; 13. Gear lever; 14. Rotating shaft; 15. Connecting frame; 111. Mounting plate; 112. Support frame; 113. Sliding rod; 114. Locking hole;

[0045] 121. Motor; 122. Drive shaft; 123. Square shaft; 124. Main bevel gear;

[0046] 131, bottom column; 132, rod body; 133, limit hole; 134, push block; 135, Y-shaped frame;

[0047] 141, square cavity; 142, round cavity;

[0048] 151, positioning pin; 152, positioning shaft;

[0049] 2. Height limit assembly; 21. Limit rope; 22. Warning piece; 23. Connecting rope; 24. Mounting head;

[0050] 241, mounting column; 242, assembly block;

[0051] 3. Light stand;

[0052] 4. Mounting frame; 41. Positioning hole; 42. Guide roller;

[0053] 5. Rotating device;

[0054] 6. Pressure sensor;

[0055] 7. Assembly head; 71. Rotating seat; 72. Assembly cylinder; 73. Driving block; 74. Torsion spring;

[0056] 721, jack; 722, arc-shaped limit groove;

[0057] 8. Transmission lines. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] The invention provides a restricted access fence.

[0060] Please refer to Figure 3 and Figure 1 , in one embodiment of the present invention, the restricted fence comprises: a height limiting component 2 and two restricted pole components 1;

[0061] The limit rod assembly 1 includes a base 11, a rotating device 12, a lever 13 and a rotating shaft 14. A mounting plate 111 and the rotating device 12 are installed on the base 11 at intervals. The rotating shaft 14 is rotatably installed at the bottom end of the lever 13. One end of the rotating shaft 14 is rotatably connected to the mounting plate 111, and the other end of the rotating shaft 14 is connected to the output end of the rotating device 12.

[0062] The height limiting assembly 2 includes a limit rope 21 and a plurality of warning members 22, and the plurality of warning members 22 are sequentially spaced on the limit rope 21;

[0063] Please refer again Figure 1 When the restricted fence is in the restricted state, the two gear bars 13 are arranged horizontally;

[0064] See also Figure 2 When the restricted fence is in a height-limited state, the two bars 13 are vertically arranged, and the two ends of the limiting rope 21 are respectively assembled and connected with the top ends of the two bars 13 to form a door-type roadblock structure.

[0065] It can be understood that in this embodiment, the rotating device 12 drives the gear lever 13 to rotate via the rotating shaft 14 to achieve the switching between the horizontal setting and the vertical setting of the gear lever 13.

[0066] The warning member 22 can be a reflective cloth or a reflective sign. The warning member 22 is arranged on the limit rope 21 to improve the prohibition warning effect of the height limit assembly 2 at night. The warning member 22 can cooperate with the vehicle light to allow the driver of the vehicle to intuitively see the height limit position, thereby achieving a prohibition warning effect.

[0067] See also Fig.13 When the restricted fence is in a height-limited state, there is a preset height difference between the limiting rope 21 and the power transmission line 8.

[0068] When the restricted fence is in the restricted state, the two levers 13 are arranged horizontally; the two levers 13 directly block the entry of vehicles. When entry is allowed, the rotating device 12 drives the corresponding lever 13 to rotate 90 degrees, so that the lever 13 is perpendicular to the base 11, and vehicles can pass through at this time;

[0069] When the restricted fence is in the height-limited state, there is a preset height difference between the limit rope 21 and the power transmission line 8. The two levers 13 are vertically arranged, and the two ends of the limit rope 21 are respectively assembled and connected with the top ends of the two levers 13 to form a gate-type roadblock structure. The gate-type roadblock structure can prohibit overheight vehicles from passing, and finally realize the restriction function and height-limiting function of the vehicle through the switching of a restricted fence.

[0070] In this embodiment, the restricted fence may further include a camera and a control module, and the camera is mounted on the base 11 through a bracket. The camera, the control module and the rotating device 12 are sequentially connected by signals. When the camera collects vehicle information, it is transmitted to the control module, and the control module controls the rotating device 12 to work.

[0071] Please refer again Figure 2 The restricted traffic fence also includes a lamp rack 3, and the lamp rack 3 is installed on the gear lever 13.

[0072] A plurality of spotlights can be installed on the lamp stand 3, and the installation height of the lamp stand 3 can be roughly flush with the height of the vehicle's cab. At night, on the one hand, it can remind the driver that there is a height limit fence ahead, and on the other hand, it can also illuminate the warning piece 22 to clearly indicate the height limit position.

[0073] Please refer to Figure 4 and Figure 5 The gear lever 13 includes a bottom column 131 and a rod body 132, the bottom column 131 is rotatably mounted on the bottom end of the rod body 132, and the rotating shaft 14 is rotatably mounted on the bottom column 131;

[0074] The restricted fence further includes two rotating devices 5, the rotating devices 5 are arranged one by one with the rod bodies 132, and the rotating devices 5 are used to drive the rod bodies 132 to rotate;

[0075] The lamp holder 3 is mounted on the rod body 132 ; and both ends of the limit rope 21 are rotatably assembled and connected to the top ends of the two rod bodies 132 .

[0076] In this embodiment, the rod body 132 rotates by itself, which means that the central axis of the rod body 132 and the bottom column 131 are always in a colinear state, and the rod body 132 rotates around its own central axis. It can be understood that when the two rotating devices 5 drive the two rod bodies 132 to rotate back and forth respectively, the two rod bodies 132 rotate synchronously in the same direction to avoid pulling the limit rope 21.

[0077] At the same time, the rotating device 5 drives the rod body 132 to rotate back and forth, and the rod body 132 drives the spotlight to rotate back and forth through the lamp holder 3. By driving the spotlight to rotate back and forth, the irradiation range of the spotlight is increased to enhance the effect of the prohibition warning.

[0078] Please refer to Figures 4 to 6 As an optional method of this embodiment, the rotating device 5 is a bevel gear, and the rotating device 5 is fixed on the rod body 132; the limiting rod assembly 1 also includes a connecting frame 15, and the connecting frame 15 is slidably mounted on the base 11;

[0079] The rotating device 12 includes a motor 121, a square shaft 123 and a main bevel gear 124. The motor 121 is installed on the base 11 through the connecting frame 15. The square shaft 123 is connected to the driving shaft 122 of the motor 121. The main bevel gear 124 is installed on the driving shaft 122.

[0080] The rotating shaft 14 has a square cavity 141 and a circular cavity 142 connected to each other. The diameter of the square shaft 123 is larger than the diameter of the driving shaft 122 . The aperture of the square cavity 141 is smaller than the aperture of the circular cavity 142 . The square shaft 123 is assembled with the square cavity 141 .

[0081] Furthermore, a limiting hole 133 is provided at the bottom end of the bottom column 131 , and a positioning shaft 152 is installed on the connecting frame 15 , and the positioning shaft 152 is arranged toward the limiting hole 133 .

[0082] When the motor 121 is used to drive the lever 13 to rotate as a whole, the square shaft 123 is assembled with the square cavity 141. At this time, the motor 121 drives the square shaft 123 to rotate, and the square shaft 123 drives the rotating shaft 14 to rotate through the square cavity 141, thereby driving the lever 13 to rotate as a whole, so that the lever 13 is horizontal or vertical, that is, the switching of the restricted fence between the restricted state and the height restricted state is realized.

[0083] When the motor 121 is required to drive the rod body 132 to rotate independently, the motor 121 is pushed to make the main bevel gear 124 mesh with the rotating device 5 (slave bevel gear). At this time, the square shaft 123 moves into the circular cavity 142, the driving shaft 122 moves into the square cavity 141, and the positioning shaft 152 is inserted into the limiting hole 133.

[0084] The motor 121 drives the drive shaft 122 to rotate back and forth, and the drive shaft 122 drives the main bevel gear 124 to rotate. The main bevel gear 124 rotates through the rotating device 5 (slave bevel gear), thereby driving the rod body 132 to rotate. The rod body 132 drives the spotlight to rotate back and forth through the lamp holder 3 to achieve rotation warning blocking.

[0085] As another optional mode of this embodiment, the rotating device 5 includes a fixed frame, a rotating motor, a main gear and a slave gear, the rotating motor is mounted on the base 11 through the fixed frame, the main gear and the slave gear are respectively mounted on the output shaft of the rotating motor and the rod body 132, and the main gear is meshed with the slave gear. At this time, the rotating device 12 may include a motor 121, and the output shaft of the motor 121 is fixedly connected to the rotating shaft 14.

[0086] Please refer again Figure 6 , a plurality of slide bars 113 may be installed on the base 11, and the connecting frame 15 is sleeved on the slide bars 113. By sleeved the connecting frame 15 on the slide bars 113, the connecting frame 15 is slidably connected with the base 11.

[0087] The base 11 may also be provided with a slide groove, and a slider is provided at the bottom of the connecting frame 15, and the slider slides into the slide groove to form a sliding assembly.

[0088] Preferably, a plurality of locking holes 114 are formed on the sliding rod 113 , and a positioning pin 151 is provided through the base 11 , and the positioning pin 151 is plugged into one of the locking holes 114 .

[0089] By providing the positioning pin 151 and the locking hole 114, the positioning pin 151 is aligned with a corresponding locking hole 114 and assembled with the corresponding locking hole 114, so that the motor 121 can be more stably limited. The locking hole 114 can be a threaded hole, and the corresponding positioning pin 151 is provided with a thread, and the positioning pin 151 is threadedly connected with the threaded hole to improve the stability of the connection.

[0090] Please refer to Figure 3 and Figure 4 The rod body 132 includes a plurality of vertical pipes assembled in sequence, which is convenient for carrying the lever 13 and adjusting the height of the lever 13 according to the usage. The vertical pipes are assembled by threaded connection or flange connection.

[0091] Please refer to Figure 8 , Fig. 9 and Figure 7 The restricted fence further comprises two assembly heads 7, one of the assembly heads 7 is installed in a corresponding rod body 132, a rectangular opening is provided at the bottom end of the rod body 132, and the rectangular opening is arranged toward the assembly head 7;

[0092] The height limiting assembly 2 further includes a connecting rope 23 and a mounting head 24 . The bottom end of the connecting rope 23 is connected to the mounting head 24 , and the top end of the connecting rope 23 passes through the rod body 132 and is connected to the limiting rope 21 .

[0093] During the use of the restricted fence, the driver may still make mistakes. The crane arm or bucket of the construction vehicle may directly interact with the limit rope 21, lifting the limit rope 21 upwards; or when the height of the crane arm or bucket exceeds the limit rope 21, it interacts with the limit rope 21 when adjusting downward; or the limit rope 21 is entangled with the crane arm or bucket, and the downward movement will pull the limit rope 21, which may damage the height limit assembly 2, and even cause the two gear levers 13 to fall down at the same time.

[0094] By setting the assembly head 7 and the installation head 24 in a detachable connection, when the above-mentioned emergency situation occurs, a rectangular opening is opened at the bottom end of the rod body 132 to obtain space for operation, and the installation head 24 can be separated from the assembly head 7; when the above-mentioned situation occurs, after the installation head 24 is separated from the assembly head 7, the connecting rope 23 moves upward, and the limiting rope 21 can also move upward to follow the movement of the boom or the hopper, and there will be no situation in which the height limit component 2 is damaged or even the reverse gear lever 13 is pulled.

[0095] Please refer to Figures 8 to 10 The mounting head 24 includes a mounting column 241 and an assembly block 242, wherein the assembly block 242 is mounted on the mounting column 241, and the mounting column 241 is connected to the connecting rope 23;

[0096] The assembly head 7 includes a rotating seat 71, an assembly cylinder 72 and a driving block 73. The assembly cylinder 72 is rotatably mounted in the rod body 132 through the rotating seat 71, and the driving block 73 is mounted on the assembly cylinder 72.

[0097] The top of the assembly tube 72 is provided with an insertion hole 721, and the assembly tube 72 is provided with an arc-shaped limiting groove 722, the arc-shaped limiting groove 722 is connected with the insertion hole 721, and the insertion hole 721 is in a "Zhong" shape;

[0098] The mounting head 24 is inserted into the arc-shaped limiting groove 722 from the insertion hole 721 , and the assembly block 242 abuts against the inner wall of the assembly tube 72 ; a push block 134 is installed on the inner wall of the rod body 132 , and the push block 134 is arranged adjacent to the driving block 73 .

[0099] Please refer to Fig.10 (a) and Fig.10 (b) When the rotating device 12 is in the rotation adjustment state, the motor 121 drives the rod body 132 to drive the lamp holder 3 to reciprocate, and the rod body 132 drives the push block 134 to reciprocate without contacting the driving block 73, that is, the assembly cylinder 72 will not be driven to rotate.

[0100] When the above emergency occurs, please refer to Fig.10 (c) and Fig.11 When the motor 121 enters the unlocking state, the motor 121 drives the rod body 132 to drive the push block 134 to rotate, and the push block 134 pushes the driving block 73 to drive the assembly cylinder 72 to rotate, so that the assembly block 242 is aligned with the socket 721. At this time, when the connecting rope 23 pulls up the installation head 24, the installation head 24 is separated from the assembly head 7.

[0101] The rotating device 12 can sequentially realize the functions of switching the driving lever 13 to limit the travel and height, the function of driving the rod body 132 to drive the lamp holder 3 to rotate for warning, and the function of automatically unlocking the assembly head 7 and the installation head 24.

[0102] Please refer again Fig. 9 As an optional method of this embodiment, the number of the driving blocks 73 is two, and the two driving blocks 73 are respectively installed on both sides of the assembly cylinder 72.

[0103] When the rotating device 12 is in the rotation adjustment state, the motor 121 drives the rod body 132 to drive the lamp holder 3 to reciprocate, and the rod body 132 drives the push block 134 to reciprocate between the two driving blocks 73;

[0104] When it is necessary to unlock the assembly head 7 and the mounting head 24 , the push block 134 can be made to work with the closest driving block 73 to drive the assembly cylinder 72 to rotate according to the situation.

[0105] The number of the limiting ropes 21 may be one, two or more.

[0106] Please refer to Figure 3 and Figure 7In this embodiment, the number of the limiting ropes 21 is two;

[0107] A mounting bracket 4 is disposed at the top of each rod body 132 , and the limiting rope 21 passes through the mounting bracket 4 through a positioning hole 41 and is connected to the connecting rope 23 .

[0108] As a preferred mode of this embodiment, a guide roller 42 is provided on the mounting frame 4 and located on one side of the positioning hole 41, and the limiting rope 21 is connected to the connecting rope 23 after passing through the guide roller 42. A guide roller 42 may also be provided in the corresponding rod body 132, and the connecting rope 23 is guided by the guide roller 42; the guide roller 42 is provided to reduce the friction between the limiting rope 21 and the connecting rope 23 when they move.

[0109] As a preferred mode of this embodiment, the connecting rope 23 can be an elastic rope. When the limiting rope 21 is pulled, when the installation head 24 and the assembly head 7 are not separated, the connecting rope 23 can be stretched to a certain range through elasticity, thereby providing sufficient time for the installation head 24 and the assembly head 7 to be separated.

[0110] Please refer again Figure 7 As an optional method of this embodiment, the restriction fence also includes two pressure sensors 6, the two pressure sensors 6 are installed on a corresponding mounting frame 4, and the two pressure sensors 6 are located on the upper and lower sides of the positioning hole 41, and each of the pressure sensors 6 is connected to the motor 121 signal.

[0111] When the above emergency situation occurs, when the vehicle components lift up or pull down the limit rope 21, the limit rope 21 acts on the pressure sensor 6, and the pressure sensor 6 detects the change in pressure and controls the motor 121 to enter the above unlocking state.

[0112] The pressure sensor 6 may be a wireless sensor powered by a built-in battery.

[0113] As another optional mode of this embodiment, the assembly head 7 further includes a tension sensor, the tension sensor is connected to the rotating seat 71 and the assembly cylinder 72 , and the tension sensor is signal-connected to the motor 121 .

[0114] When the construction vehicle lifts up or pulls down the limit rope 21, the limit rope 21 pulls up the installation head 24 through the connecting rope 23, and the installation head 24 pulls up the assembly tube 72. At this time, the tension sensor detects the tension and controls the motor 121 to enter the unlocking state.

[0115] As another optional method of this embodiment, the above emergency situation can also be monitored by the camera to start the motor 121 to enter the unlocking state.

[0116] Please refer to Figure 8 and Fig.12 As a preferred mode of this embodiment, a Y-shaped frame 135 is arranged inside the rod body 132, and the Y-shaped frame 135 is correspondingly sleeved on the mounting column 241, and the rotational friction between the mounting column 241 and the Y-shaped frame 135 is greater than the rotational friction between the assembly cylinder 72 and the mounting column 241.

[0117] Thereby, the axial position of the mounting head 24 can be limited to prevent the mounting cylinder 72 from driving the mounting head 24 to rotate along with the driving block 73 when driving the mounting cylinder 72 to rotate, so that the mounting block 242 cannot accurately correspond to the socket 721.

[0118] Please refer again Fig.12 The mounting column 241 includes a square portion and a columnar portion, the square portion is arranged on the top of the columnar portion, and one end of the Y-shaped frame 135 is sleeved on the square portion to achieve rotation limitation of the mounting column 241. The assembly block 242 is installed on the columnar portion.

[0119] The diameter of the insertion hole 721 is larger than the diameter of the square portion, and the diameter of the square portion is larger than the diameter of the columnar portion, so that the columnar portion can pass through the Y-shaped frame 135 and be separated from the assembly head 7 .

[0120] Please refer again Figure 8 In this embodiment, the assembly head 7 further includes a torsion spring 74 , and two ends of the torsion spring 74 are respectively connected to the assembly tube 72 and the rotating seat 71 .

[0121] The torsion spring 74 can limit the assembly cylinder 72 to prevent the assembly cylinder 72 from rotating when disassembly is not required, thereby causing the assembly block 242 to align with the insertion hole 721.

[0122] In other embodiments, an anti-slip sleeve may be provided on the rotating parts of the assembly tube 72 and the rotating seat 71 , so that the assembly tube 72 and the rotating seat 71 will not rotate relative to each other without the action of external force.

[0123] When the mounting head 24 moves upward following the limiting rope 21, when the mounting head 24 is subsequently assembled again, the shift rod 13 can be correspondingly rotated to the horizontal direction, the limiting rope 21 can be straightened, and then the end of the limiting rope 21 can be clamped with the mounting frame 4 through external tools such as clips, and then the shift rod 13 can be rotated upward to the vertical direction. Since the limiting rope 21 is clamped on the mounting frame 4, it will not have a pulling effect on the connecting rope 23. At this time, the mounting head 24 and the connecting rope 23 fall to the bottom end of the rod body 132 due to the action of gravity. At this time, the mounting head 24 can be held by hand through the rectangular opening to be assembled with the assembly head 7, and then the rod body 132 can be lowered and the clamp can be removed.

[0124] Of course, the rod body 132 can also be disassembled into multiple separate vertical pipes, and the installation head 24 can be sent to the lowest vertical pipe in sequence.

[0125] Please refer to Figure 1 and Figure 2 A support frame 112 is installed on the top of the base 11. When the gear lever 13 is arranged horizontally, the support frame 112 is used to support the gear lever 13.

[0126] By providing the support frame 112 , the lever 13 in a horizontal state is supported, thereby improving the stability of the lever 13 in a horizontal state and reducing the load on the rotating device 12 .

[0127] A preferred working principle of the restricted access fence provided by the present invention is as follows:

[0128] When the restricted fence is in the restricted state, the rotating device 12 is in the pitch adjustment state, and the square shaft 123 is inserted into the square cavity 141. At this time, the motor 121 drives the square shaft 123 to rotate, and the square shaft 123 drives the rotating shaft 14 to rotate through the square cavity 141, thereby driving the gear lever 13 to adjust the pitch angle, so that the gear lever 13 is horizontal or vertical. When the gear lever 13 is horizontal, it is also convenient to assemble the height limit component 2.

[0129] When the restricted fence is in the height-restricted state, the connecting frame 15 is pushed to drive the motor 121 to move toward the rotating shaft 14, so that the square shaft 123 passes through the square cavity 141 and enters the circular cavity 142, and the driving shaft 122 is inserted into the circular cavity 142, and at the same time the main bevel gear 124 is meshed with the rotating device 5 (slave bevel gear);

[0130] When the spotlight needs to rotate back and forth for warning, the rotating device 12 enters the rotation adjustment state, the motor 121 drives the driving shaft 122 to rotate back and forth, the driving shaft 122 drives the main bevel gear 124 to rotate, the main bevel gear 124 rotates through the rotating device 5 (slave bevel gear), thereby driving the rod body 132 to rotate, and the rod body 132 drives the spotlight to rotate back and forth through the lamp holder 3 to achieve the warning blocking function.

[0131] Please refer to Fig.10 (a) and Fig.10 (b) When the rotating device 12 is in the rotation adjustment state, the motor 121 drives the rod body 132 to drive the lamp holder 3 to reciprocate, and the rod body 132 drives the push block 134 to move between the two driving blocks 73, and does not drive the assembly cylinder 72 to rotate.

[0132] Please refer to Fig.10(c) When the pressure sensor 6 detects a change in pressure, the motor 121 enters an unlocked state. At this time, the motor 121 drives the rod body 132 to rotate to an angle that exceeds the angle between the two driving blocks 73 and the center of the rod body 132. At this time, the push block 134 pushes the driving block 73 to drive the assembly cylinder 72 to rotate, so that the assembly block 242 is aligned with the socket 721. At this time, when the connecting rope 23 pulls up the installation head 24, the installation head 24 is separated from the assembly head 7.

[0133] The rotating device 12 can sequentially realize the functions of driving the gear lever 13 to pitch and adjust to achieve the functions of limiting the number of vehicles and the height of vehicles, driving the rod body 132 to drive the lamp holder 3 to rotate and warn, and realizing the function of unlocking the assembly head 7 and the installation head 24.

[0134] The invention also provides an alarm system for approaching high-voltage power transmission lines.

[0135] See also Fig.14 The alarm system for approaching high-voltage transmission lines includes: a detection device, an alarm device and the restricted fence, and the detection device is signal-connected to the alarm device.

[0136] In this embodiment, the detection device can be installed on the upper end of the boom of a crane or on the hopper of an excavator, and the alarm device can be installed in the cab of a vehicle.

[0137] When in use, the restricted fence is installed below the power line 8, and further, the restricted fence can also be located in front of the power line 8. It can play a blocking and a warning role. Through the limit rope 21 and the warning member 22, the driver can see the height limit position more intuitively.

[0138] When the highest point of the vehicle exceeds the fence due to driver's misoperation, the detection device will detect the power transmission line 8, and the alarm device will issue a voice reminder to give another alarm. At the same time, the alarm of the spotlight can also better remind the driver.

[0139] Through the coordinated use of limit fences, alarm devices and detection devices, the effects of one blocking and two alarms are achieved.

[0140] The detection device may include an electric field sensing module and / or a magnetic field sensing module: the electric field sensing module can sense the electric field generated by the surrounding high-voltage transmission line 8. By detecting the electric field strength, the distance to the high-voltage transmission line 8 is determined; the electric field sensing module usually uses a highly sensitive electric field sensor.

[0141] The magnetic field sensing module assists in determining the distance from the high-voltage transmission line 8 by detecting changes in the magnetic field. The magnetic field sensing module is usually composed of a magnetic sensor and can detect magnetic fields in different directions.

[0142] Among them, the specific structure of the restricted fence refers to the above-mentioned embodiment. Since the alarm system approaching the high-voltage transmission line adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0143] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A restricted traffic fence, characterized in that: include: Height limit assembly and two limit rod assemblies; The limit rod assembly includes a base, a rotating device, a shift rod and a rotating shaft, wherein a mounting plate and the rotating device are installed on the base at intervals, the rotating shaft is rotatably installed at the bottom end of the shift rod, one end of the rotating shaft is rotatably connected to the mounting plate, and the other end of the rotating shaft is connected to the output end of the rotating device; The height limiting assembly includes a limit rope and a plurality of warning members, and the plurality of warning members are sequentially spaced on the limit rope; When the restricted fence is in a restricted state, the two gear bars are arranged horizontally; When the restricted fence is in a height-limited state, the two bars are vertically arranged, and the two ends of the limit rope are respectively assembled and connected with the top ends of the two bars to form a door-type roadblock structure; The gear lever comprises a bottom column and a rod body, wherein the bottom column is rotatably mounted on the bottom end of the rod body, and the rotating shaft is rotatably mounted on the bottom column; The restricted fence also includes a lamp rack, which is mounted on the rod body; the two ends of the limit rope are respectively connected to the top ends of the two rod bodies in a rotatable assembly; The restricted fence further includes two secondary bevel gears, which are arranged in one-to-one correspondence with the rod body and are fixed on the rod body; the restricted rod assembly further includes a connecting frame, which is slidably mounted on the base; The rotating device includes a motor, a square shaft and a main bevel gear. The motor is installed on the base through the connecting frame. The square shaft is connected to the driving shaft of the motor. The main bevel gear is installed on the driving shaft. A square cavity and a circular cavity that are interconnected are opened in the rotating shaft. The diameter of the square shaft is larger than the diameter of the driving shaft, and the aperture of the square cavity is smaller than the aperture of the circular cavity. The square shaft is assembled with the square cavity.

2. The restricted access fence according to claim 1, characterized in that: The restricted traffic fence also includes two assembly heads, one of which is installed in a corresponding rod body, and a rectangular opening is opened at the bottom end of the rod body, and the rectangular opening is arranged toward the assembly head; The height limiting component also includes a connecting rope and a mounting head. The bottom end of the connecting rope is connected to the mounting head, and the top end of the connecting rope passes through the rod body and is connected to the limiting rope.

3. The restricted access fence according to claim 2, characterized in that: The mounting head comprises a mounting post and an assembly block, wherein the assembly block is mounted on the mounting post, and the mounting post is connected to the connecting rope; The assembly head comprises a rotating seat, an assembly cylinder and a driving block, wherein the assembly cylinder is rotatably mounted in the rod body through the rotating seat, and the driving block is mounted on the assembly cylinder; A plug hole is provided at the top of the assembly tube, an arc-shaped limiting groove is provided in the assembly tube, the arc-shaped limiting groove is connected to the plug hole, and the plug hole is in a "Zhong" shape; Wherein, the mounting head is installed into the arc-shaped limiting groove from the insertion hole, and the assembly block abuts against the inner wall of the assembly cylinder; a push block is installed on the inner wall of the rod body, and the push block is arranged adjacent to the driving block.

4. The restricted access fence according to claim 3, characterized in that: The number of the limiting ropes is two; A mounting bracket is arranged at the top end of each rod body, and the limiting rope passes through the mounting bracket through a positioning hole and is connected with the connecting rope.

5. The restricted traffic fence according to claim 4, characterized in that: The restricted traffic fence also includes two pressure sensors, which are mounted on a corresponding mounting frame and are located on the upper and lower sides of the positioning hole, and each of the pressure sensors is connected to the motor signal.

6. The restricted access fence according to claim 1, characterized in that: A support frame is installed on the top of the base, and when the gear lever is arranged horizontally, the support frame is used to support the gear lever.

7. An alarm system for approaching a high-voltage transmission line, characterized in that: include: A detection device, an alarm device and a restricted access fence as described in any one of claims 1 to 6, wherein the detection device is signal-connected to the alarm device.

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