Fixed induction type telescopic protective fence

Abstract

The utility model relates to a fixed induction type telescopic protective fence which comprises a main control box, a telescopic handrail and a terminal box, one end of the telescopic handrail is hinged to the main control box, and the other end of the telescopic handrail is hinged to the terminal box; the telescopic handrail is composed of a plurality of hollow pipes which are hinged in sequence; an electric field induction type detector and an alarm are arranged on the main control box, and a detection line group of the electric field induction type detector penetrates through middle holes of all the hollow pipes and then is connected with the alarm; according to the utility model, through the arrangement of the electric field induction type detector and the alarm, when a person invades, an electromagnetic field in a detection area is interfered, so that the induced voltage output by the induction line is changed, and as long as the change in the aspects such as the amplitude and the rate of signal change or the duration of interference exceeds a specified threshold value, the alarm can give an alarm. The alarm can give an alarm; therefore, the anti-theft protective fence can give an alarm when an intruder climbs over the protective fence, and the protective performance of the protective fence is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of guardrails, in particular to a fixed induction telescopic guardrail. Background Art

[0002] Guardrails are widely used in production and life, including garden guardrails, highway guardrails, municipal guardrails, etc. Private villa and courtyard guardrails are popular in many cities, mostly made of wooden panels. It consists of three parts: guardrail panels, horizontal strip panels, and guardrail columns. The general height is between 0.5 and 2 meters. It is generally used for construction isolation, temporary road isolation, and crowd isolation in large public places. Scope of application: road traffic isolation, construction isolation, and isolation of large places such as gymnasiums. In order to increase the isolation length of the guardrail, the guardrail is generally designed as a telescopic guardrail.

[0003] Traditional guardrails only have the function of protection and blocking. They cannot intercept people who break in maliciously. In addition, they do not have an alarm function when the guards are not alert, making it difficult to detect intruders. Utility Model Content

[0004] In order to solve the technical problems in the prior art that the guardrail has no alarm function and it is difficult to detect intruders, the utility model provides a fixed induction telescopic guardrail.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A fixed induction telescopic guardrail comprises a main control box, a telescopic railing and a terminal box, one end of the telescopic railing is hinged to the main control box, and the other end of the telescopic railing is hinged to the terminal box; the telescopic railing is composed of a plurality of hollow tubes hinged in sequence;

[0007] The main control box is provided with an electric field induction detector and an alarm. The detection wire group of the electric field induction detector passes through the middle holes of all the hollow tubes and is connected to the alarm.

[0008] The beneficial effects of the utility model are as follows: by setting an electric field induction detector and an alarm, since the detection line of the electric field induction detector includes at least two or more field lines and induction lines, a field line and an induction line are installed close together to form a group of the detection lines. The low-frequency signal oscillator built into the electric field induction detector generates a low-frequency oscillation signal voltage with a frequency of 1-40kHz and sends it to each field line, and a magnetic field will be generated around the field line, connecting the induction line with the alarm. If someone invades, the electromagnetic field in the detection area is disturbed, so that the induction voltage output by the induction line changes, and as long as the changes in the amplitude, rate or duration of the interference of the measured signal change exceed the specified threshold, the alarm will sound an alarm. Therefore, the present invention can sound an alarm when an intruder climbs over the guardrail, thereby improving the protective performance of the guardrail.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the telescopic railing includes a first telescopic railing, one end of which is hinged to the main control box, and the other end of which is hinged to the terminal box; the first telescopic railing includes two parallel and symmetrical first scissor-type telescopic mechanisms, each of which is composed of a plurality of hollow tubes hinged in sequence.

[0011] The beneficial effect of adopting the above further solution is that by setting the first telescopic railing as two parallel and symmetrical first scissor-type telescopic mechanisms, the stability of the terminal box during movement can be improved and movement on the predetermined route can be ensured during movement.

[0012] Furthermore, a second telescopic railing is arranged between the two first scissor-type telescopic mechanisms, one end of the second telescopic railing is hinged to the main control box, and the other end of the second telescopic railing is hinged to the terminal box; the second telescopic railing includes two parallel and symmetrical second scissor-type telescopic mechanisms, each of the second scissor-type telescopic mechanisms is composed of a plurality of hollow tubes hinged in sequence; each second scissor-type telescopic mechanism is parallel to any first scissor-type telescopic mechanism.

[0013] The beneficial effect of adopting the above further solution is that by providing a second telescopic railing, the connection stability between the main control box and the terminal box can be further improved. At the same time, after adding the second telescopic railing, the density of the guardrail is improved.

[0014] Further, the detection wire group includes a first detection wire group and a second detection wire group, the first detection wire group passes through the middle holes of all the hollow tubes of the first telescopic railing, and the second detection wire group passes through the middle holes of all the hollow tubes of the second telescopic railing.

[0015] Furthermore, the free end of the first detection wire group is connected to the alarm after passing through the multiple hollow tubes of the two first scissor-type telescopic mechanisms in sequence; the free end of the second detection wire group is connected to the alarm after passing through the multiple hollow tubes of the two second scissor-type telescopic mechanisms in sequence.

[0016] The beneficial effect of adopting the above further solution is that, since the first telescopic railing and the second telescopic railing are independent structures, detection line groups are respectively provided on the two independent railings, which can improve the monitoring accuracy.

[0017] Furthermore, the main control box is also provided with a transformer and a motor control board, and the terminal box is provided with an electric walking mechanism for driving the terminal box to move. The transformer is electrically connected to the electric walking mechanism through the motor control board, and the transformer is used to supply power to the electric walking mechanism. The motor control board is used to control the start and stop of the electric walking mechanism.

[0018] The beneficial effect of adopting the above further solution is that by using the motor control board to control the start and stop of the terminal box when it is moving, the operator can control the terminal box at the main control box, thereby improving the control efficiency.

[0019] Furthermore, the electric walking mechanism includes a motor and a reducer, the input shaft of the reducer is fixedly connected to the rotating shaft of the motor, the reducer is a double-output shaft worm gear reducer, and rollers are fixedly arranged on both output shafts of the double-output shaft worm gear reducer;

[0020] The power output end of the transformer, the motor control board and the motor are electrically connected in sequence through wires.

[0021] The beneficial effect of adopting the above further scheme is that the terminal box is controlled by the motor and the worm gear reducer, no brake mechanism is required, and the terminal box can only be controlled by one-way input through the motor, thereby improving the protection stability.

[0022] Furthermore, the dual-output shaft worm gear reducer includes a housing, in which a driven gear, a driving gear, a turbine and a worm are arranged, the driving gear is meshed with the driven gear, the worm is meshed with the turbine, the turbine and the driving gear share a rotating shaft, and the two ends of the rotating shaft of the driven gear are respectively the two output shafts of the dual-output shaft worm gear reducer.

[0023] Further, a limit switch is provided on the terminal box, and the limit switch is provided on a side of the terminal box connected to the telescopic railing;

[0024] The power output end of the transformer, the motor control board, the limit switch and the motor are electrically connected in sequence through wires.

[0025] The beneficial effect of adopting the above further solution is that, by setting a limit switch, the terminal box can stop in time after approaching the main control box, thereby preventing the terminal box from colliding with the main control box.

[0026] Furthermore, a storage cavity for accommodating the telescopic railing is provided on the main control box, and an opening on one side of the storage cavity close to the terminal box is provided. One side of the telescopic railing passes through the opening of the storage cavity and is hinged to the main control box. The opening height of the storage cavity is lower than the height of the terminal box.

[0027] The beneficial effect of adopting the above further solution is that the retractable railing can be easily stored by providing the storage cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the utility model;

[0029] Figure 2 It is a schematic structural diagram of a first telescopic railing and a second telescopic railing of the utility model;

[0030] Figure 3 It is a structural schematic diagram of the terminal box of the utility model.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1-main control box, 2-transformer, 3-electric field induction detector, 4-alarm, 5-motor control board, 6-first telescopic railing, 7-second telescopic railing, 8-terminal box, 9-motor, 10-reducer, 11-first detection line group, 12-second detection line group, 13-roller, 14-driven gear, 15-driving gear, 16-worm, 17-limit switch. DETAILED DESCRIPTION

[0033] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0034] like Figure 1 As shown, this embodiment provides a fixed induction telescopic guardrail, comprising a main control box 1, a telescopic railing and a terminal box 8, one end of the telescopic railing is hinged to the main control box 1, and the other end of the telescopic railing is hinged to the terminal box 8; the telescopic railing is composed of a plurality of hollow tubes hinged in sequence;

[0035] The main control box 1 is provided with an electric field induction detector 3 and an alarm 4. The detection wire group of the electric field induction detector 3 passes through the middle holes of all the hollow tubes and is connected to the alarm 4. The alarm 4 is an audible and visual alarm or a siren.

[0036] like Figure 2 As shown, the telescopic railing includes a first telescopic railing 6, one end of which is hinged to the main control box 1, and the other end of which is hinged to the terminal box 8; the first telescopic railing 6 includes two parallel and symmetrical first scissor-type telescopic mechanisms, each of which is composed of a plurality of hollow tubes hinged in sequence. By setting the first telescopic railing 6 as two parallel and symmetrical first scissor-type telescopic mechanisms, the stability of the terminal box 8 during movement can be improved and the terminal box 8 can be guaranteed to move on the scheduled route during movement.

[0037] Specifically, a second telescopic railing 7 is provided between the two first telescopic scissor-type mechanisms, one end of the second telescopic railing 7 is hinged to the main control box 1, and the other end of the second telescopic railing 7 is hinged to the terminal box 8; the second telescopic railing 7 includes two parallel and symmetrical second telescopic scissor-type mechanisms, each of which is composed of a plurality of hollow tubes hinged in sequence; each second telescopic scissor-type mechanism is parallel to any first telescopic scissor-type mechanism. By providing the second telescopic railing 7, the connection stability between the main control box 1 and the terminal box 8 can be further improved. At the same time, after adding the second telescopic railing 7, the density of the guardrail is improved.

[0038] Optionally, the detection wire group includes a first detection wire group 11 and a second detection wire group 12 , the first detection wire group 11 passes through the center holes of all the hollow tubes of the first telescopic railing 6 , and the second detection wire group 12 passes through the center holes of all the hollow tubes of the second telescopic railing 7 .

[0039] The free end of the first detection wire group 11 is connected to the alarm 4 after passing through the multiple hollow tubes of the two first scissor-type telescopic mechanisms in sequence; the free end of the second detection wire group 12 is connected to the alarm 4 after passing through the multiple hollow tubes of the two second scissor-type telescopic mechanisms in sequence.

[0040] The first detection line group 11 and the second detection line group 12 are each composed of at least one field line and one induction line installed closely together to form a set of detection lines. Since the first telescopic railing 6 and the second telescopic railing 7 are independent structures, the detection line groups are respectively arranged on the two independent railings to improve the monitoring accuracy.

[0041] In some embodiments, the main control box 1 is also fixedly provided with a transformer 2 and a motor control board 5, and the terminal box 8 is provided with an electric travel mechanism for driving the terminal box 8 to move, and the transformer 2 is electrically connected to the electric travel mechanism through the motor control board 5, and the transformer 2 is used to supply power to the electric travel mechanism, and the motor control board 5 is used to control the start and stop of the electric travel mechanism. By using the motor control board 5 to control the start and stop of the terminal box 8 when it moves, it is convenient for the operator to control the terminal box 8 at the main control box 1, thereby improving the control efficiency.

[0042] like Figure 3 As shown, the electric travel mechanism includes a motor 9 and a reducer 10, the input shaft of the reducer 10 is fixedly connected to the rotating shaft of the motor 9, the reducer 10 is a double-output shaft worm gear reducer, and rollers 13 are fixedly arranged on both output shafts of the double-output shaft worm gear reducer; the power output end of the transformer 2, the motor control board 5 and the motor 9 are electrically connected in sequence through wires. The terminal box 8 is controlled by the motor 9 and the worm gear reducer, and a brake mechanism is not required, and the control terminal box 8 can only be controlled by the motor 9 in a one-way input manner, thereby improving the protection stability.

[0043] Specifically, the dual-output shaft worm gear reducer includes a housing, and a driven gear 14, a driving gear 15 and a worm 16 arranged inside the housing, the driving gear 15 is meshed with the driven gear 14, the worm 16 is meshed with the turbine, the turbine and the driving gear 15 share a rotating shaft, and the two ends of the rotating shaft of the driven gear 14 are respectively the two output shafts of the dual-output shaft worm gear reducer. It should be noted that the structural description of the dual-output shaft worm gear reducer is one of the specific embodiments, and any dual-output shaft worm gear reducer can be selected in the utility model, and the rotation direction and rotation speed of the two output shafts of the dual-output shaft worm gear reducer are consistent.

[0044] In some embodiments, a limit switch 17 is provided on the terminal box 8, and the limit switch 17 is provided on the side of the terminal box 8 connected to the telescopic railing; the limit switch 17 is specifically a contact limit switch or a travel limit switch. The power output end of the transformer 2, the motor control board 5, the limit switch 17 and the motor 9 are electrically connected in sequence through wires. When arranging, the connecting wires between the motor control board 5 and the limit switch 17 can be arranged by passing through all the hollow tubes of any scissor-type telescopic mechanism in the first telescopic railing 6 or the second telescopic railing 7 to improve the regularity of the wiring.

[0045] The main control box 1 is provided with a storage cavity for accommodating the telescopic railing, the storage cavity is close to the left opening of the terminal box 8, one side of the telescopic railing passes through the opening of the storage cavity and is hinged to the main control box 1, that is, one side of the telescopic railing is hinged to the right side wall of the storage cavity, and the opening height of the storage cavity is lower than the height of the terminal box 8. When the telescopic railing is extended or retracted, the storage cavity can be used to store the telescopic railing.

[0046] It should be noted that the motor control board 5 in the utility model is provided with two push-button motor start-stop switches, which are used to control the forward and reverse rotation of the motor 9 respectively; the motor 9 can adopt a traditional three-phase asynchronous motor; it is common technical knowledge to control the forward and reverse rotation and start and stop of the three-phase asynchronous motor by push-button switches, and the specific control principle is not described in detail in the utility model. In addition, each component in the utility model is connected to the corresponding main structure by screws or bolts. For example, the reducer 10 is fixed to the bottom of the terminal box 8 by screws or bolts, and the motor 9 can be fixed to the housing of the reducer 10 by screws.

[0047] The embodiment of the utility model is provided with an electric field induction detector 3 and an alarm 4. Since the detection line of the electric field induction detector 3 includes at least two or more field lines and induction lines, a field line and an induction line are installed close together to form a group of the detection lines. The low-frequency signal oscillator built into the electric field induction detector 3 generates a low-frequency oscillation signal voltage with a frequency of 1-40kHz and sends it to each field line, and a magnetic field will be generated around the field line, connecting the induction line with the alarm 4. If someone invades, the electromagnetic field in the detection area is disturbed, so that the induction voltage output by the induction line changes. As long as the changes in the amplitude, rate or duration of the interference of the signal change exceed the specified threshold, the alarm 4 will sound an alarm. Therefore, the present invention can sound an alarm when an intruder climbs over the guardrail, thereby improving the protective performance of the guardrail. By setting a limit switch 17, the terminal box 8 can be stopped in time after approaching the main control box 1 to prevent the terminal box 8 from colliding with the main control box 1.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the concept and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fixed induction telescopic guardrail, characterized in that: It comprises a main control box (1), a telescopic railing and a terminal box (8), one end of the telescopic railing is hinged to the main control box (1), and the other end of the telescopic railing is hinged to the terminal box (8); the telescopic railing is composed of a plurality of hollow tubes hinged in sequence; The main control box (1) is provided with an electric field induction detector (3) and an alarm (4), and a detection wire group of the electric field induction detector (3) passes through the middle holes of all the hollow tubes and is connected to the alarm (4).

2. The fixed induction telescopic guardrail according to claim 1, characterized in that: The telescopic railing comprises a first telescopic railing (6), one end of the first telescopic railing (6) is hinged to the main control box (1), and the other end of the first telescopic railing (6) is hinged to the terminal box (8); the first telescopic railing (6) comprises two parallel and symmetrical first scissor-type telescopic mechanisms, each of the first scissor-type telescopic mechanisms is composed of a plurality of hollow tubes hinged in sequence.

3. The fixed induction telescopic guardrail according to claim 2 is characterized in that: A second telescopic railing (7) is arranged between the two first scissor-type telescopic mechanisms, one end of the second telescopic railing (7) is hinged to the main control box (1), and the other end of the second telescopic railing (7) is hinged to the terminal box (8); the second telescopic railing (7) includes two parallel and symmetrical second scissor-type telescopic mechanisms, each of the second scissor-type telescopic mechanisms is composed of a plurality of hollow tubes hinged in sequence; each second scissor-type telescopic mechanism is parallel to any one of the first scissor-type telescopic mechanisms.

4. The fixed induction telescopic guardrail according to claim 3 is characterized in that: The detection wire group comprises a first detection wire group (11) and a second detection wire group (12), the first detection wire group (11) passing through the middle holes of all the hollow tubes of the first telescopic railing (6), and the second detection wire group (12) passing through the middle holes of all the hollow tubes of the second telescopic railing (7).

5. The fixed induction telescopic guardrail according to claim 4, characterized in that: The free end of the first detection wire group (11) is connected to the alarm (4) after passing through the multiple hollow tubes of the two first scissor-type telescopic mechanisms in sequence; the free end of the second detection wire group (12) is connected to the alarm (4) after passing through the multiple hollow tubes of the two second scissor-type telescopic mechanisms in sequence.

6. The fixed induction telescopic guardrail according to claim 1, characterized in that: The main control box (1) is also provided with a transformer (2) and a motor control board (5); the terminal box (8) is provided with an electric travel mechanism for driving the terminal box (8) to move; the transformer (2) is electrically connected to the electric travel mechanism via the motor control board (5); the transformer (2) is used to supply power to the electric travel mechanism; and the motor control board (5) is used to control the start and stop of the electric travel mechanism.

7. The fixed induction telescopic guardrail according to claim 6, characterized in that: The electric travel mechanism comprises an electric motor (9) and a reducer (10), wherein an input shaft of the reducer (10) is fixedly connected to a rotating shaft of the electric motor (9), and the reducer (10) is a double-output-shaft worm gear reducer, and rollers (13) are fixedly arranged on both output shafts of the double-output-shaft worm gear reducer; The power output end of the transformer (2), the motor control board (5) and the motor (9) are electrically connected in sequence via wires.

8. The fixed inductive telescopic guardrail according to claim 7, characterized in that: The dual-output shaft worm gear reducer comprises a housing, wherein a driven gear (14), a driving gear (15), a turbine and a worm (16) are arranged in the housing, the driving gear (15) meshes with the driven gear (14), the worm (16) meshes with the turbine, the turbine and the driving gear (15) share a rotating shaft, and both ends of the rotating shaft of the driven gear (14) are respectively two output shafts of the dual-output shaft worm gear reducer.

9. The fixed inductive telescopic guardrail according to claim 7, characterized in that: The terminal box (8) is provided with a limit switch (17), and the limit switch (17) is arranged on a side of the terminal box (8) connected to the telescopic railing; The power output end of the transformer (2), the motor control board (5), the limit switch (17) and the motor (9) are electrically connected in sequence via wires.

10. The fixed inductive telescopic guardrail according to any one of claims 1 to 9, characterized in that: The main control box (1) is provided with a storage chamber for accommodating the telescopic railing, the storage chamber has an opening on one side close to the terminal box (8), one side of the telescopic railing passes through the opening of the storage chamber and is hinged to the main control box (1), and the opening height of the storage chamber is lower than the height of the terminal box (8).

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