Hydropower station portal crane cable anti-theft device

Abstract

The utility model relates to the technical field of cable protection, and discloses a hydropower station portal crane cable anti-theft device which comprises a hydropower station portal crane and a cable body, and cable placing structures, cable anti-theft structures and auxiliary structures are arranged in the left side and the right side of the hydropower station portal crane. The protection sleeve is made of a high-strength and cutting-resistant material and can effectively resist damage of general theft tools, the clamping sleeve is gradually screwed through a plurality of second fixing bolts, the clamping sleeve is evenly stressed and contracted, the protection sleeve is made to be seamlessly attached to the cable body, at the moment, the induction coil can be tightly attached to the cable body, subtle state changes of the cable are accurately captured, and then the protection sleeve is fixed to the cable body. The protection sleeve is stably installed by means of the first fixing bolt, when the protection sleeve is damaged by malicious cutting and the like, an induction coil loop is cut off, signal transmission is interfered, a central control room can receive abnormal information at the first time, a safety plan is started in time, and the risk that the cable is stolen is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cable protection, in particular to a cable theft prevention device for a gantry crane in a hydropower station. Background Art

[0002] There are many small and medium-sized hydropower stations in southwest my country. These hydropower stations are located in sparsely populated areas. Combined with small and medium-sized long-water diversion hydropower stations, the dams are remote from the main powerhouses and generally adopt an "unmanned" operation and management mode. Operation and maintenance personnel conduct regular inspections and use industrial television for daily patrols. A hydropower station in Sichuan Province has experienced multiple cases of dam gate crane cable theft, posing a major threat to the company's production safety work and causing significant economic losses.

[0003] After searching, the applicant discovered that a Chinese patent disclosed "A cable anti-theft device for a hydropower station gantry crane" with the publication (announcement) number "CN 217640354 U". This patent mainly covers a three-phase five-wire power cable connected to the dam gantry crane. Under existing conditions, the utility model can monitor the gantry crane cable with little economic investment and equipment modification, effectively preventing the occurrence of cable theft cases. However, the above-mentioned prior art is only a passive alarm method and does not have the function of actively preventing theft. There is a risk that the cable may be stolen during manual intervention by staff. Therefore, we propose a cable anti-theft device for a hydropower station gantry crane. Utility Model Content

[0004] The purpose of the utility model is to provide a cable anti-theft device for a hydropower station gantry crane, so as to solve the problem that the above-mentioned prior art is only a passive alarm method and has no function of actively preventing theft, and the risk of cable theft may occur during manual intervention by staff.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cable anti-theft device for a hydropower station gantry crane, comprising a hydropower station gantry crane and a cable body, wherein the left and right sides of the hydropower station gantry crane are internally provided with a cable placement structure, a cable anti-theft structure and an auxiliary structure, wherein the cable placement structure comprises a connecting steel column, wherein the connecting steel column is connected to a bridge frame through a base, wherein a placement groove is provided inside the bridge frame, wherein the cable anti-theft structure comprises a protective sleeve, wherein the protective sleeve is connected to a connecting plate through a jacket, and wherein the protective sleeve is connected to a first fixing bolt through a mounting seat.

[0006] As a preferred solution, the protective sleeve is sleeved on the outer surface of the cable body, an induction coil is fixedly installed on the inner wall of the protective sleeve, the induction coil is in contact with the cable body, a plurality of the sleeves are provided and are distributed at equal distances, and the plurality of the sleeves are all sleeved on the outer surface of the protective sleeve, and two groups of connecting plates are provided and are fixedly installed at the openings of the sleeves.

[0007] As a preferred solution, multiple second fixing bolts are threadedly connected between the two connecting plates, and multiple mounting seats are provided and distributed at equal distances. Multiple sets of device mounting seats are fixedly installed on the bottom circumferential surface of the protective sleeve, and their bottom surfaces are fixedly installed inside the placement groove by first fixing bolts.

[0008] As a preferred solution, the connecting steel column is fixedly installed on the top bottom surface of one side of the hydropower station gantry, and the base is fixedly installed on the bottom of the connecting steel column. The connecting steel columns and bases are provided in multiple groups and are distributed at equal distances, and the bridge is fixedly installed on the surface of multiple groups of bases.

[0009] As a preferred solution, the side surfaces of the plurality of groups of bases are each provided with an auxiliary structure, and the auxiliary structure includes a fixing plate fixedly mounted on a surface of one side of the base.

[0010] As a preferred solution, a vibration sensor is fixedly installed on the left end surface of the fixed plate, and an LED flash is fixedly installed on the right end. A camera is fixedly installed at the center of the surface of the fixed plate, and a shock-absorbing pad is provided between the fixed plate and the base.

[0011] The technical effects and advantages of this utility model are:

[0012] 1. By setting up a cable anti-theft structure, first, the protective sleeve is tightly fitted on the surface of the cable body. The protective sleeve is made of high-strength, cut-resistant material and can effectively resist damage from general theft tools. Then, multiple second fixing bolts are used to gradually tighten the sleeve. The sleeve is evenly contracted under force, making the protective sleeve and the cable body fit seamlessly. At this time, the induction coil can also fit tightly with the cable body, accurately capturing subtle changes in the cable state. Subsequently, the mounting base is fixed in the placement slot with the help of the first fixing bolt, thereby achieving a stable installation of the protective sleeve. When the protective sleeve is subjected to malicious cutting or other damage, the induction coil loop is cut off and the signal transmission is disturbed. The central control room can immediately receive abnormal information and promptly initiate the corresponding safety plan to minimize the risk of cable theft.

[0013] 2. By setting up cable placement structures and auxiliary structures, first of all, with the help of a stable combination of connecting steel columns and the base, the bridge is accurately and firmly installed on the side of the hydropower station gantry crane, making the cable wiring more regular and orderly. A vibration sensor and camera are installed on the fixing plate on one side of the base. When the cable body encounters abnormal external force, such as being maliciously pulled or cut to cause a large amplitude vibration, the vibration sensor instantly captures the vibration signal and transmits it to the control room. At the same time, the camera quickly starts to record real-time video, and the matching LED flash emits a strong flash synchronously. Its dazzling light is particularly effective at night or in low-light environments, which can form a strong psychological deterrent to thieves, thereby further improving the protection efficiency and safety of the entire cable anti-theft system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 It is a right side cross-sectional structural schematic diagram of the present utility model;

[0016] Figure 3 for Figure 2 A in the middle is an enlarged structural diagram;

[0017] Figure 4 This is a schematic diagram of the cable anti-theft structure of the utility model;

[0018] Figure 5 This is one of the partial structural diagrams of the cable anti-theft structure of the present utility model;

[0019] Figure 6 This is the second partial structural diagram of the cable anti-theft structure of the present utility model;

[0020] Figure 7 It is a structural diagram of the auxiliary structure of the utility model.

[0021] In the figure: 1. Hydropower station gantry crane; 2. Cable placement structure; 3. Cable anti-theft structure; 4. Auxiliary structure; 5. Cable body; 201. Connecting steel column; 202. Base; 203. Bridge; 204. Placement slot; 301. Protective cover; 302. Jacket; 303. Mounting seat; 304. First fixing bolt; 305. Induction coil; 306. Connecting plate; 307. Second fixing bolt; 401. Fixing plate; 402. Vibration sensor; 403. Camera; 404. LED flash. DETAILED DESCRIPTION

[0022] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0023] Example 1:

[0024] Please see the attached Figure 1 - Attachment Figure 6 A cable anti-theft device for a hydropower station gantry crane comprises a hydropower station gantry crane 1 and a cable body 5. A cable placement structure 2, a cable anti-theft structure 3 and an auxiliary structure 4 are provided on the left and right sides of the hydropower station gantry crane 1. The cable placement structure 2 comprises a connecting steel column 201, which is connected to a bridge frame 203 through a base 202. A placement groove 204 is provided inside the bridge frame 203. The cable anti-theft structure 3 comprises a protective sleeve 301, which is connected to a connecting plate 306 through a jacket 302. The protective sleeve 301 is connected to a first fixing bolt 304 through a mounting seat 303. The protective sleeve 301 is sleeved on the outer surface of the cable body 5 to prevent An induction coil 305 is fixedly installed on the inner wall of the sheath 301, and the induction coil 305 is in contact with the cable body 5. There are multiple jackets 302 and they are distributed at equal distances. The multiple jackets 302 are all sleeved on the outer surface of the protective sleeve 301. There are two groups of connecting plates 306 and they are fixedly installed at the openings of the jacket 302 respectively. A plurality of second fixing bolts 307 are threadedly connected between the two connecting plates 306. There are multiple mounting seats 303 and they are distributed at equal distances. The multiple groups of device mounting seats 303 are all fixedly installed on the bottom circumferential surface of the protective sleeve 301, and their bottom surfaces are fixedly installed inside the placement groove 204 by first fixing bolts 304.

[0025] Putting a protective sleeve 301 on the surface of the cable body can play an anti-theft role. The protective sleeve 301 is made of high-strength, cut-resistant materials, such as stainless steel wire braided sleeves, Kevlar fiber sleeves, etc., which can increase the difficulty for thieves to cut the cable. It is difficult for thieves to cut it with ordinary knives, thereby playing a physical protection role for the cable body 5. An induction coil 305 is embedded in the protective sleeve 301. When the protective sleeve 301 is cut or torn, the loop of the induction coil 305 is cut off and the signal transmission is disturbed, which will trigger the alarm system. The bridge 203 is installed on the side of the hydropower station gantry machine 1. This arrangement is conducive to conveniently leading the cable body 5 from the electrical control cabinet or power access point of the power station to the hydropower station gantry machine 1 without affecting the normal operation and lifting operation of the hydropower station gantry machine 1.

[0026] Specifically, the protective cover 301 is first installed on the surface of the cable body 5, and then the jacket 302 is tightened by tightening multiple second fixing bolts 307, so that the protective cover 301 is tightly fitted to the cable body 5. At this time, the induction coil 305 is completely fitted to the cable body 5, and then the mounting base 303 is fixed in the placement groove 204 by multiple first fixing bolts 304, thereby completing the fixed installation of the cable body 5. When the protective cover 301 is cut or torn, the loop of the induction coil 305 is cut off, the signal transmission is interfered with, and the central control room receives the information to realize the monitoring of the cable body 5. At the same time, the protective cover 301 is made of high-strength and cut-resistant material, which has a certain degree of active prevention of theft.

[0027] Example 2:

[0028] Please see the attached Figure 1 - Attachment Figure 4 And attached Figure 7 , and on the basis of Example 1, it is further obtained that the connecting steel column 201 is fixedly installed on the top bottom surface of one side of the hydropower station gantry 1, the base 202 is fixedly installed on the bottom of the connecting steel column 201, and the connecting steel column 201 and the base 202 are provided with multiple groups and are distributed at equal distances, the bridge 203 is fixedly installed on the surface of the multiple groups of bases 202, and the sides of the multiple groups of bases 202 are provided with auxiliary structures 4, the auxiliary structure 4 includes a fixing plate 401 fixedly installed on the surface of one side of the base 202, a vibration sensor 402 is fixedly installed on the left end surface of the fixing plate 401, and an LED flash 404 is fixedly installed on the right end thereof, a camera 403 is fixedly installed at the center of the surface of the fixing plate 401, and a shock-absorbing pad is provided between the fixing plate 401 and the base 202.

[0029] When someone climbs the bridge 203 or cuts, pries, or performs other operations on the cable body 1, vibrations will be generated. The vibration sensor 402 can detect these vibration signals and send them to the control unit. At the same time, the camera 403 takes pictures. A normal fluctuation range needs to be set for the vibration sensor 402 to avoid interference from irrelevant vibration sources. It is installed on the base 202, and shock-absorbing pads are used to reduce vibration interference caused by normal operation of the machine. The vibration sensor 402 and the camera 403 are electrically connected. After the vibration sensor 402 receives the signal, the camera 403 automatically takes pictures.

[0030] Specifically, first, the bridge 203 is installed on the side of the hydropower station gantry 1 by connecting the steel column 201 and the base 202, which is convenient for the layout of the cable body 5. The vibration sensor 402 and the camera 403 are installed on the fixed plate 401 on one side of the base 202. When the cable body 5 is pulled or cut to cause a large vibration, the vibration sensor 402 transmits the signal to the control room. At this time, the camera 403 takes pictures and takes photos of the thief to collect evidence. At the same time, the LED flash 404 emits flashes to scare away the thief, further improving the anti-theft effect.

[0031] Working principle of the utility model: The utility model is a cable anti-theft device for a hydropower station gantry crane. First, the bridge 203 is installed on the side of the hydropower station gantry crane 1 by connecting the steel column 201 and the base 202, which is convenient for arranging the cable body 5. Then, the protective sleeve 301 is installed on the surface of the cable body 5. Then, by tightening multiple second fixing bolts 307, the jacket 302 is tightened, so that the protective sleeve 301 is tightly attached to the cable body 5. At this time, the induction coil 305 is completely attached to the cable body 5. Then, the mounting base 303 is fixed in the placement groove 204 by multiple first fixing bolts 304, thereby completing the cable body 5. When the protective cover 301 is cut or torn, the loop of the induction coil 305 is cut off, the signal transmission is disturbed, and the central control room receives the information to monitor the cable body 5. A vibration sensor 402 and a camera 403 are installed on the fixed plate 401 on one side of the base 202. When the cable body 5 is pulled or cut to cause a large vibration, the vibration sensor 402 transmits the signal to the central control room. At this time, the camera 403 takes pictures and takes photos of the thief for evidence. At the same time, the LED flash 404 emits a flash to scare away the thief, further improving the anti-theft effect. At this point, the whole process ends.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cable anti-theft device for a hydropower station gantry crane, comprising a hydropower station gantry crane (1) and a cable body (5), characterized in that: The left and right sides of the hydropower station gantry (1) are both internally provided with a cable placement structure (2), a cable anti-theft structure (3) and an auxiliary structure (4); the cable placement structure (2) includes a connecting steel column (201); the connecting steel column (201) is connected to a bridge (203) via a base (202); a placement groove (204) is provided inside the bridge (203); the cable anti-theft structure (3) includes a protective sleeve (301); the protective sleeve (301) is connected to a connecting plate (306) via a jacket (302); and the protective sleeve (301) is connected to a first fixing bolt (304) via a mounting seat (303).

2. A hydropower station gantry crane cable anti-theft device according to claim 1, characterized in that: The protective sleeve (301) is sleeved on the outer surface of the cable body (5); an induction coil (305) is fixedly installed on the inner wall of the protective sleeve (301); the induction coil (305) is in contact with the cable body (5); a plurality of the jackets (302) are provided and are distributed at equal distances; the plurality of jackets (302) are sleeved on the outer surface of the protective sleeve (301); and two groups of connecting plates (306) are provided and are fixedly installed at the openings of the jackets (302).

3. The cable anti-theft device for a hydropower station gantry crane according to claim 1, characterized in that: A plurality of second fixing bolts (307) are threadedly connected between the two connecting plates (306), and a plurality of mounting seats (303) are provided and distributed at equal distances. The plurality of device mounting seats (303) are all fixedly mounted on the bottom circumferential surface of the protective sleeve (301), and the bottom surface thereof is fixedly mounted inside the placement groove (204) by the first fixing bolts (304).

4. The cable anti-theft device for a hydropower station gantry crane according to claim 1, characterized in that: The connecting steel column (201) is fixedly mounted on the bottom surface of the top of one side of the hydropower station gantry crane (1); the base (202) is fixedly mounted on the bottom of the connecting steel column (201); the connecting steel column (201) and the base (202) are both provided in multiple groups and are distributed at equal distances; the bridge (203) is fixedly mounted on the surface of the multiple groups of bases (202).

5. The cable anti-theft device for a hydropower station gantry crane according to claim 4, characterized in that: The side surfaces of the plurality of groups of bases (202) are each provided with an auxiliary structure (4), and the auxiliary structure (4) comprises a fixing plate (401) fixedly mounted on a side surface of the base (202).

6. The cable anti-theft device for a hydropower station gantry crane according to claim 5, characterized in that: A vibration sensor (402) is fixedly mounted on the left end surface of the fixing plate (401), while an LED flashlight (404) is fixedly mounted on the right end thereof. A camera (403) is fixedly mounted at the center of the surface of the fixing plate (401), and a shock-absorbing pad is provided between the fixing plate (401) and the base (202).

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