A cable manhole protection device

Abstract

The present invention discloses a protection device for cable manholes, aiming to solve the deficiency that the protection effect of the cable manhole protection device is poor when there is no one on guard. The invention includes a fence body arranged around the cable manhole, and an attitude sensor, a monitor, and a controller are installed on the fence body; the attitude sensor is used to detect the displacement, vibration, and inclination states of the fence body and transmit the data to the controller; the monitor captures the on-site images around the cable manhole and transmits them to the controller. This cable manhole protection device of the present invention can protect the cable manhole in real time, preventing people and foreign objects from falling into the manhole and causing potential safety hazards.

Description

Technical Field

[0001] The present invention relates to a power construction technology, and more specifically, it relates to a protection device for cable manholes. Background Art

[0002] To ensure the safety during the cable construction process and effectively protect the cable manholes, especially for the protection of manholes when the cable construction site is unattended at night, fences must be installed around the cable manholes to protect the cable manholes and the internal environment, preventing pedestrians and foreign objects from falling into the manholes.

[0003] Currently, during the cable construction process, the cable manholes are often in an open state, and fences are arranged around them for safety protection to prevent pedestrians from falling, etc. However, when the site is temporarily not under construction, especially at night, due to the lack of on-site personnel supervision, when external forces act, such as strong wind weather or human movement, the fences of the manholes often shift, and then lose their protection function, posing a great safety hazard such as falling into the well for passing pedestrians. Summary of the Invention

[0004] In order to overcome the above deficiencies, the present invention provides a protection device for cable manholes, which can protect the cable manholes in real time and prevent personnel and foreign objects from falling into the manholes and causing safety hazards.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: A protection device for cable manholes, including a fence body arranged around the cable manhole, and an attitude sensor, a monitor, and a controller are installed on the fence body;

[0006] The attitude sensor is used to detect the displacement, vibration, and tilt states of the fence body and transmit the data to the controller;

[0007] The monitor captures the on-site pictures around the cable manhole and transmits them to the controller.

[0008] The fence body is arranged around the cable manhole to play a warning and protection role, preventing pedestrians and foreign objects from falling into the cable manhole. Especially when there is no one on-site, the monitor monitors the scene, captures the on-site pictures around the cable manhole and transmits them to the controller. The attitude sensor detects the displacement, vibration, and tilt states of the fence body and transmits the data to the controller. The controller transmits the information to the computer or mobile phone of the management personnel by wired or wireless means. Once there is an abnormality at the cable manhole site, it can be discovered in time for timely handling. This protection device for cable manholes of the present invention can protect the cable manholes in real time and prevent personnel and foreign objects from falling into the manholes and causing safety hazards.

[0009] Preferably, a number of infrared sensors are spacedly arranged at the upper end of the fence body, and the infrared sensors are electrically connected to the controller.

[0010] When a person breaks into the fence body, it can be detected by the infrared sensors, which is convenient for the management personnel to handle in time.

[0011] Preferably, a sound and light alarm is installed on the fence body, and the sound and light alarm is electrically connected to the controller.

[0012] When there is an abnormality at the cable manhole site, the sound and light alarm emits a sound and light alarm.

[0013] Preferably, a storage battery for supplying power to the controller is installed on the fence body.

[0014] Power supply is carried out through the storage battery, which is flexible and convenient.

[0015] Preferably, a solar photovoltaic panel is installed on the fence body, and the storage battery is charged after the solar photovoltaic panel generates electricity.

[0016] Charging is carried out by using the solar photovoltaic panel, and real-time charging can be carried out during the day without the need for an additional power source to charge the storage battery, which is more convenient.

[0017] Preferably, a support rod is installed on the fence body, the storage battery and the monitor are installed on the support rod, and the solar photovoltaic panel is installed at the upper end of the support rod.

[0018] The setting of the support rod facilitates the installation of the storage battery, the monitor and the solar photovoltaic panel.

[0019] Preferably, the fence body is formed by four fence frames connected end to end to form a frame structure.

[0020] The fence body with a frame structure is more stable in structure.

[0021] Preferably, the fence frame includes an upper cross bar, a lower cross bar and a number of vertical columns. The vertical columns are connected between the upper cross bar and the lower cross bar, a support base is provided at the lower end of the vertical columns, and a number of spaced support rods are connected between the upper cross bar and the lower cross bar.

[0022] The structure of the fence frame is simple, has good strength, and the support is stable and reliable.

[0023] Preferably, vertically arranged connecting columns are installed at both ends of the fence frame, and the connecting columns are hinged to vertical sleeves; a movably arranged slider is installed on the connecting column, a pre-tightening spring is installed between the slider and the connecting column, and a push rod is hinged between the sleeve and the slider; a piston is installed in the sleeve, and a piston rod is connected to the piston, and an ejection head is installed on the upper end of the piston rod, an air storage chamber is arranged below the piston in the sleeve, a high-pressure air storage tank is installed on the sleeve, and an electromagnetic valve is installed between the high-pressure air storage tank and the air storage chamber, and the electromagnetic valve is electrically connected to the controller; a positioning pin is installed on the sleeve, and a reset spring is installed between the positioning pin and the sleeve, a positioning groove is provided on the slider, and a protrusion is provided on the piston rod, one end of the positioning pin abuts against the protrusion, and the other end of the positioning pin is inserted in the positioning groove to position the slider; a protective net bag is connected between the two sleeves at both ends of the fence frame, and the two ends of the lower edge of the protective net bag are respectively connected to the lower ends of the two sleeves, and the two ends of the upper edge of the protective net bag are respectively connected to the two ejection heads.

[0024] When the site is unattended and someone breaks in, he or she will be sensed by the attitude sensor, monitor, and infrared sensor. At this time, the controller controls the solenoid valve to open, and the high-pressure airflow in the high-pressure gas tank is delivered to the gas storage chamber, pushing the piston upward, and the bump is disengaged from the positioning pin. The slider slides downward under the action of the preload spring, causing the push rod to push the casing downward to a horizontal position. The piston continues to move upward to eject the ejection head outward, thereby unfolding the protective net bag and laying it above the cable shaft, which can prevent intruders from falling into the cable shaft. For some malicious thieves, it can hinder their entry into the cable shaft, delay the time of success, and thus reserve time for management personnel to arrive at the site for disposal.

[0025] Preferably, an axially arranged air vent is provided on the piston rod, a mounting groove is provided at the upper end of the piston rod, an ejection head is installed in the mounting groove, an extension rod is connected to the ejection head, the extension rod is inserted in the air vent, the extension rod extends downward to the piston position, an air inlet is provided on the piston, the air inlet is connected between the air vent and the air storage chamber, a movable sealing baffle and a push rod are connected to the piston, the sealing baffle is used to open and close the air vent, an inclined pushing surface is provided on the push rod, the pushing surface is attached to the edge of the sealing baffle, and the upper end of the push rod extends out of the upper end of the piston; a positioning frame for limiting the piston is installed near the upper end position in the sleeve, a positioning head is installed at the lower end of the extension rod, and a limiting frame for limiting the positioning head is installed at the upper end of the air vent.

[0026] After the piston moves upward to the position of the positioning frame, the push rod is pushed downward by the positioning frame, and the pushing surface on the push rod pushes the sealing baffle to move to open the air inlet hole, and the air flow is transported from the air inlet hole and the air vent to the mounting groove, so that the ejection head is ejected outward until the positioning head at the lower end of the extension rod hits the limit frame. At this time, after the second ejection, the extension rod, piston rod, and sleeve are sequentially assembled together, with an overall length that is longer and can cover the entire side length of the cable shaft, thereby improving the support stability of the protective net bag and thus improving the protection effect.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The cable manhole protection device can protect the cable manhole in real time, preventing personnel and foreign objects from falling into the manhole and causing potential safety hazards; (2) When a person breaks into the fence body, the protective net pocket can play a further protective role to prevent the person from falling into the cable manhole. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of the present invention;

[0029] Figure 2 is a schematic diagram of the principle of Embodiment 2 of the present invention;

[0030] Figure 3 is a schematic diagram of the sleeve connection structure of Embodiment 2 of the present invention;

[0031] In the figure: 1, attitude sensor; 2, monitor; 3, fastening frame; 4, hanging head; 5, fence frame; 6, upper cross bar; 7, lower cross bar; 8, column; 9, support base; 10, support rod; 11, infrared sensor; 12, storage battery; 13, solar photovoltaic panel; 14, support rod; 15, insertion hole; 16, locking screw; 17, connecting column; 18, sleeve; 19, slider; 20, pre-tightening spring; 21, push rod; 22, piston; 23, piston rod; 24, ejection head; 25, air storage cavity; 26, high-pressure gas storage tank; 27, solenoid valve; 28, positioning pin; 29, return spring; 30, positioning groove; 31, convex block; 32, protective net pocket; 33, ventilation hole; 34, installation groove; 35, extension rod; 36, air inlet hole; 37, sealing baffle; 38, ejector rod; 39, positioning frame; 40, positioning head; 41, limiting frame; 42, cable manhole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The technical solutions of the present invention will be further specifically described below through specific embodiments in conjunction with the drawings:

[0033] Embodiment 1: A cable manhole protection device (see attached Figure 1 ), including a fence body arranged around the cable manhole, and an attitude sensor 1, a monitor 2, and a controller are installed on the fence body;

[0034] The attitude sensor is used to detect the displacement, vibration, and inclination states of the fence body and transmit the data to the controller; a fastening frame 3 is installed on the fence body, the attitude sensor is firmly installed on the fastening frame, a hanging head 4 is provided on the fastening frame, and the hanging head is hung on the upper end of the fence body and fastened to the fence body by screws;

[0035] A monitor captures the on-site images around the cable manhole and transmits them to the controller. The monitor can rotate its angle to achieve 360-degree all-round monitoring. The monitor is an existing technology, and its specific structure will not be elaborated in this application.

[0036] The fence body is formed by four fence frames 5 connected end to end to form a frame structure. The fence frame includes an upper crossbar 6, a lower crossbar 7, and several upright columns 8. The upright columns are connected between the upper crossbar and the lower crossbar. In this embodiment, three upright columns are provided, and a support base 9 is provided at the lower end of the upright columns. Several support rods 10 are connected between the upper crossbar and the lower crossbar at intervals. The support base is lower than the lower crossbar.

[0037] Several infrared sensors 11 are arranged at intervals at the upper end of the fence body. The infrared sensors are electrically connected to the controller, and one infrared sensor is installed at the upper end of each upright column. An audible and visual alarm is installed on the fence body, and the audible and visual alarm is electrically connected to the controller. A storage battery 12 for powering the controller is installed on the fence body. A solar photovoltaic panel 13 is installed on the fence body, and the solar photovoltaic panel charges the storage battery after generating electricity. A solar power controller is connected between the solar photovoltaic panel and the storage battery. A support rod 14 is installed on the fence body. The support rod is installed at one end of the fence frame, and an insertion hole 15 is provided on the upright column corresponding to the support rod on the fence frame. The insertion hole is axially arranged, and the lower part of the support rod is inserted into the insertion hole. A locking screw 16 is connected to the upright column, and the end of the locking screw abuts against the support rod. The storage battery and the monitor are installed on the support rod, and the solar photovoltaic panel is installed at the upper end of the support rod.

[0038] The fence body is arranged around the cable manhole to play a warning and protective role, preventing pedestrians and foreign objects from falling into the cable manhole. Especially when there is no one on-site, the monitor monitors the current situation, captures the on-site images around the cable manhole and transmits them to the controller. The attitude sensor detects the displacement, vibration, and tilt states of the fence body and transmits the data to the controller. When a person breaks into the fence body, it can be detected by the infrared sensor and the data is transmitted to the controller. The controller transmits the information to the manager's computer or mobile phone by wired or wireless means. Once there is an abnormality at the cable manhole site, it can be discovered in time, facilitating timely handling.

[0039] Embodiment 2: A cable manhole protection device (see attached Figure 2 、attached Figure 3), its structure is similar to that of embodiment 1, the main difference being that in this embodiment, vertically arranged connecting columns 17 are installed at both ends of the fence frame, the connecting columns are hinged to a vertical sleeve 18, a hinge seat is provided on the connecting column near the lower end, and the lower end of the sleeve is hinged on the hinge seat; a movable slider 19 is installed on the connecting column, a slide groove is provided on the connecting column, the slider is installed in the slide groove, a preload spring 20 is installed between the slider and the connecting column, and a push rod 21 is hinged between the sleeve and the slider; a piston 22 is installed in the sleeve, a piston rod 23 is connected to the piston, a ejection head 24 is installed on the upper end of the piston rod, the ejection head is arranged at the upper end of the sleeve, and the piston is close to the lower end of the sleeve. An air storage chamber 25 is arranged below the piston in the sleeve, a high-pressure air storage tank 26 is installed on the sleeve, an electromagnetic valve 27 is installed between the high-pressure air storage tank and the air storage chamber, and the electromagnetic valve is electrically connected to the controller; a positioning pin 28 is installed on the sleeve, a return spring 29 is installed between the positioning pin and the sleeve, a positioning groove 30 is arranged on the slider, a protrusion 31 is arranged on the piston rod, one end of the positioning pin abuts against the protrusion, and the other end of the positioning pin is inserted in the positioning groove to position the slider; a protective net bag 32 is connected between the two sleeves at both ends of the fence frame, the two ends of the lower edge of the protective net bag are respectively connected to the lower ends of the two sleeves, and the two ends of the upper edge of the protective net bag are respectively connected to the two ejection heads.

[0040] The piston rod is provided with an axially arranged vent hole 33, the upper end of the piston rod is provided with a mounting groove 34, the ejection head is installed in the mounting groove, the ejection head is connected with an extension rod 35, the extension rod is inserted in the vent hole, the extension rod extends downward to the piston position, the piston is provided with an air inlet hole 36, the air inlet hole is connected between the vent hole and the air storage chamber, the piston is connected with a movable sealing baffle 37 and a push rod 38, the sealing baffle is used to open and close the vent hole, the push rod is provided with an inclined pushing surface, the pushing surface is attached to the edge of the sealing baffle, the upper end of the push rod extends out of the upper end of the piston, and a positioning spring is installed between the sealing baffle and the piston; a positioning frame 39 for limiting the piston is installed near the upper end of the sleeve, a positioning head 40 is installed at the lower end of the extension rod, and a limiting frame 41 for limiting the positioning head is installed at the upper end of the vent hole. Other structures are the same as those in Example 1.

[0041] When there is no one on site and someone breaks in, they are detected by the attitude sensor, monitor, and infrared sensor. At this time, the controller controls the solenoid valve to open, and the high-pressure air flow in the high-pressure gas storage tank is transported into the gas storage cavity, pushing the piston upward. The convex block disengages from the positioning pin, and the slider slides downward under the action of the pre-tightening spring, causing the push rod to push the sleeve downward to rotate to the horizontal position. The piston continues to move upward to eject the ejection head outward. When the piston moves upward to the position of the positioning frame, the ejector rod is pushed downward by the positioning frame, and the pushing surface on the ejector rod pushes the sealing baffle to move, thus opening the air inlet hole. The air flow is transported from the air inlet hole and the ventilation hole to the installation groove, so that the ejection head is ejected outward until the positioning head at the lower end of the extension rod touches the limit frame. At this time, after secondary ejection, the extension rod, the piston rod, and the sleeve are sleeved together in sequence, and the overall length is relatively long, which can cover the entire side length of the cable manhole. At this time, the entire protective net bag is fully unfolded and laid above the cable manhole 42, which can prevent the intruder from falling into the cable manhole. For some malicious thieves, it can hinder their entry into the cable manhole, delay the time of getting their hands on the goods, and thus reserve time for the management personnel to reach the scene for disposal.

[0042] The above-described embodiments are only preferred solutions of the present invention, and do not impose any form of limitation on the present invention. There are other variations and modifications without exceeding the technical solutions recorded in the claims.

Claims

1. A cable manhole protection device, characterized in that, It includes a fence body arranged around a cable shaft, with an attitude sensor, a monitor, and a controller installed on the fence body; The attitude sensor is used to detect the displacement, vibration, and tilt states of the fence body and transmit the data to the controller; The monitor captures the on-site images around the cable shaft and transmits them to the controller; The fence body is formed by four fence frames connected end to end to form a frame structure; vertical connecting columns are installed at both ends of the fence frames, and the connecting columns are hinged to vertical sleeves; a movably arranged slider is installed on the connecting column, a pre-tightening spring is installed between the slider and the connecting column, and a push rod is hinged between the sleeve and the slider; a piston is installed in the sleeve, a piston rod is connected to the piston, an ejection head is installed at the upper end of the piston rod, a gas storage chamber is arranged below the piston in the sleeve, a high-pressure gas storage tank is installed on the sleeve, an electromagnetic valve is installed between the high-pressure gas storage tank and the gas storage chamber, and the electromagnetic valve is electrically connected to the controller; a positioning pin is installed on the sleeve, a return spring is installed between the positioning pin and the sleeve, a positioning groove is provided on the slider, a convex block is provided on the piston rod, one end of the positioning pin abuts against the convex block, and the other end of the positioning pin is inserted into the positioning groove to position the slider; a protective net pocket is connected between the two sleeves at both ends of the fence frame, the lower edges of both ends of the protective net pocket are respectively connected to the lower ends of the two sleeves, and the upper edges of both ends of the protective net pocket are respectively connected to the two ejection heads.

2. The cable shaft protection device according to claim 1, characterized in that, A number of infrared sensors are arranged at intervals on the upper end of the fence body, and the infrared sensors are electrically connected to the controller.

3. The cable shaft protection device according to claim 1, characterized in that An audible and visual alarm is installed on the fence body, and the audible and visual alarm is electrically connected to the controller.

4. The cable shaft protection device according to claim 1, characterized in that, A storage battery for supplying power to the controller is installed on the fence body.

5. The cable shaft protection device according to claim 4, characterized in that, A solar photovoltaic panel is installed on the fence body, and after generating electricity, the solar photovoltaic panel charges the storage battery.

6. The cable shaft protection device according to claim 5, characterized in that, A support rod is installed on the fence body, the storage battery and the monitor are installed on the support rod, and the solar photovoltaic panel is installed at the upper end of the support rod.

7. The cable shaft protection device according to claim 1, characterized in that, The fence frame includes an upper cross bar, a lower cross bar, and several vertical columns. The vertical columns are connected between the upper cross bar and the lower cross bar. A support base is provided at the lower end of the vertical column, and several spaced support rods are connected between the upper cross bar and the lower cross bar.

8. The cable shaft protection device according to claim 1, characterized in that, An axially arranged ventilation hole is provided on the piston rod, an installation groove is provided at the upper end of the piston rod, the ejection head is installed in the installation groove, an extension rod is connected to the ejection head, the extension rod is inserted into the ventilation hole, and the extension rod extends downward to the piston position. An air inlet hole is provided on the piston, and the air inlet hole communicates between the ventilation hole and the gas storage chamber. A movable sealing baffle and a push rod are connected to the piston. The sealing baffle is used to open and close the ventilation hole. An inclined pushing surface is provided on the push rod, and the pushing surface fits on the edge of the sealing baffle. The upper end of the push rod extends out of the upper end of the piston; a positioning frame for limiting the piston is installed at a position near the upper end in the sleeve, a positioning head is installed at the lower end of the extension rod, and a limiting frame for limiting the positioning head is installed at the upper end of the ventilation hole.

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