Three-core middle constraint power cable fitting

Abstract

The invention relates to the technical field of power cable laying, in particular to a three-core middle constraint power cable fitting which comprises a clamping mechanism, the clamping mechanism comprises a base, two semicircular clamping grooves are symmetrically formed in the base, one end of the base is hinged to a clamping seat, and the other end of the base is hinged to the clamping seat. Two semicircular open grooves are symmetrically formed in the bottom face of the clamping base and communicate with the two clamping grooves correspondingly, a semicircular upper clamping groove is formed in the upper side face of the clamping base, an upper clamping base is hinged to the clamping base, a semicircular upper open groove is formed in the bottom face of the upper clamping base, and a semicircular lower open groove is formed in the bottom face of the lower clamping base. An upper open groove is formed in the base and communicates with the upper clamping groove, a connecting piece is arranged between the clamping base and the base, a connecting piece is arranged between the clamping base and the upper clamping base, and an adjusting mechanism is arranged in the clamping base. The adjusting mechanism comprises a semi-annular air bag arranged on the two open grooves and the inner wall of the upper clamping groove, and the air bag is communicated with an air source part.

Description

Technical Field

[0001] The invention relates to the technical field of power cable laying, and in particular to a three-core intermediate restraining power cable hardware. Background Art

[0002] In power transmission and distribution networks, power cables are used to transmit electrical energy from power stations to various user terminals. To ensure the safety and reliability of the power system, specially designed hardware must be used to connect and support these cables. For three-core cables, specific hardware is required to ensure electrical isolation between phases while providing sufficient mechanical strength to support the weight of the cable and resist environmental stress.

[0003] Existing three-core power cable fittings generally include but are not limited to: straight connectors, branch connectors, terminal connectors, etc. These fittings are designed to meet the needs of different application scenarios, such as underground laying, overhead lines or installation in tunnels.

[0004] However, traditional hardware has some limitations. For example, Chinese patent application CN200720077349.0 discloses a three-core intermediate restraint power cable hardware, which is used to restrain, clamp and fix three power cables at the same time. It includes an upper and lower hardware body, and is characterized in that the lower hardware body and the upper hardware body are combined to form a power cable clamp with a three-core intermediate restraint cavity. The power cable hardware is suitable for arc-shaped installation brackets of modern power cable tunnels; it is easy to install and maintain; and it can be installed for bending, changing lanes, redirecting, etc., which greatly improves the installation density and space utilization efficiency of power cable tunnels.

[0005] However, the technical solution of this application is to constrain the cable through a rigid ring structure, which cannot be adapted according to different sizes of cables. In addition, the cable will be deformed during use, and the cable will become loose during long-term use. The rigid ring structure cannot change according to the changes of the cable, which can easily cause the cable to loosen.

[0006] Therefore, a three-core intermediate restraint power cable fitting is needed to solve the above problems. Summary of the invention

[0007] In order to solve the above problems, that is, to solve the problem that the rigid annular structure cannot adapt to cables of different sizes and that long-term use may cause the cables to loosen, the present invention provides a three-core intermediate restraint power cable fitting.

[0008] A three-core intermediate restrained power cable hardware, including a clamping mechanism, the clamping mechanism including a base, the base symmetrically provided with two semicircular clamping grooves, one end of the base is hingedly provided with a clamping seat, the bottom surface of the clamping seat is symmetrically provided with two semicircular slots, the two slots are respectively connected with the two clamping grooves, a semicircular upper clamping groove is provided on the upper side surface of the clamping seat, an upper clamping seat is hingedly provided on the clamping seat, the bottom surface of the upper clamping seat is provided with a semicircular upper slot, the upper slot is connected with the upper clamping groove, a connecting piece is provided between the clamping seat and the base, a connecting piece is provided between the clamping seat and the upper clamping seat, an adjustment mechanism is provided in the clamping seat, the adjustment mechanism includes a semi-annular air bag arranged on the two slots and the inner wall of the upper clamping groove, the air bag is connected with an air source part.

[0009] Specifically, when in use, two cables are placed on two clamping grooves, and then the clamping seat is rotated so that the clamping seat is buckled on the cable, and then the cable is located in the slot, and the airbag in the slot contacts the cable, and then the base is connected to the clamping seat through a connecting piece, and then the third cable is placed in the upper clamping groove, and then the upper clamping seat is buckled on the third cable, and then the third cable is located in the upper slot, and the airbag in the upper clamping groove contacts the third cable, and then the clamping seat is connected to the upper clamping seat through the connecting piece; then the air source component is started, and the air source component supplies air to the airbag, causing the airbag to expand, and the airbag clamps the cable.

[0010] Through the arrangement of the base, the clamping seat and the upper clamping seat, three cables can be clamped, and through the hinged arrangement of the clamping seat and the base, and the hinged arrangement of the upper clamping seat and the clamping seat, the cables can be easily inserted into the clamping groove and the upper clamping groove, thereby facilitating the connection between the hardware and the cables, and through the arrangement of the airbag, the size of the airbag can be adjusted according to the size of the cable, so as to better clamp the cable, and through the arrangement of the air source part, the airbag can be easily adjusted to improve the adaptability of the device, and during long-term use, the size of the airbag can be adjusted according to the deformation of the cable to keep the cable clamped and fixed.

[0011] Preferably, the air source component includes a cavity opened in the clamping seat, a push plate is slidably connected in the cavity, a first spring is connected between the push plate and the bottom wall of the cavity, a push rod is fixedly connected to the push plate, the push rod extends downward through the clamping seat, and three connecting grooves are provided on the top wall of the cavity, and the three connecting grooves are respectively connected to the three air bags.

[0012] Specifically, when in use, the cable is placed in the upper clamping groove, and then the upper clamping seat is buckled on the clamping seat, and then the upper clamping seat is connected to the clamping seat through a connecting piece; then the two cables are placed on the clamping groove, and then the clamping seat is flipped over so that the clamping seat is buckled on the base. During the buckling process of the clamping seat, the push rod abuts against the upper side surface of the base, so that the push rod drives the push plate to move toward the top wall of the cavity, and the push plate pushes the gas in the cavity into the three air bags through the connecting groove, and at the same time the push plate stretches the first spring, and then the clamping seat is connected to the base through a connecting piece.

[0013] By setting the air source part, when the clamping seat is buckled onto the base, the push plate is driven to move by the movement of the push rod, thereby pushing the gas in the cavity into the airbag, causing the airbag to expand, thereby clamping the cable.

[0014] Preferably, a power part is provided in the base, and the power part includes an installation cavity opened in the base, an air pump is provided in the installation cavity, a bottom wall of the installation cavity is connected to provide a plurality of air holes, a top wall of the installation cavity is connected to provide a connecting hole, the output end of the air pump is connected to the connecting hole, a ventilation groove is penetrated in the push rod, the ventilation groove penetrates the push plate, an electromagnetic valve is provided in the ventilation groove, four air holes are evenly connected on the side wall of the bottom end of the ventilation groove along the circumferential direction, the air holes are connected to the gap between the base and the clamping seat, a sliding cylinder is slidably connected to the connecting hole, and the diameter of the connecting hole is equal to the diameter of the ventilation groove.

[0015] Specifically, during use, after the cable is installed, when it needs to move to a certain extent, the solenoid valve is opened, and the gas in the airbag enters the cavity from the connecting groove under the squeezing action of the airbag and the cable, and then the gas is discharged from the air hole through the ventilation groove, loosening the clamping of the cable, so that the cable can move to a certain extent, avoiding the need to disassemble the connecting part again; after the cable has moved and needs to be clamped again, the air pump is started, and the air pump draws gas through the air hole, and then the gas is supplied to the connecting hole through the output end, and the gas drives the sliding cylinder to move upward in the connecting hole, so that the sliding cylinder enters the ventilation groove, and the sliding cylinder closes the air hole, and at the same time, the top end of the sliding cylinder abuts against the edge of the solenoid valve, and the sliding cylinder stops moving, and then the gas enters the airbag through the solenoid valve and the ventilation groove, so that the airbag expands again and clamps the cable, and then the solenoid valve is closed, and then the air pump is closed, and the sliding cylinder slides into the connecting hole under the action of its own gravity.

[0016] Through the setting of the power part, the solenoid valve can be opened to allow the gas in the airbag to be discharged through the air hole, thereby releasing the clamping of the cable, facilitating the movement of the cable, reducing the steps of disassembling the connecting parts, and being convenient and quick. Moreover, through the setting of the air pump, when the cable needs to be re-clamped, gas can be introduced into the airbag to re-clamp the cable, which is convenient for operation.

[0017] Furthermore, the air pump and the solenoid valve are prior art and will not be described in detail.

[0018] Preferably, two moving mechanisms are symmetrically arranged in the base, and the moving mechanism includes a moving frame slidably arranged on the base, and the moving frame includes a mounting frame, and three arc plates are fixedly connected to the mounting frame, and the three arc plates are respectively abutted against the bottom surfaces of three cables.

[0019] Specifically, during use, in areas with heavy snowfall, when there is too much snow on the cable, the solenoid valve is opened, the solenoid valve discharges the air in the airbag, thereby loosening the cable, and then the movable frame is moved up and down, so that the arc plate drives the cable to swing up and down, shaking off the snow on it. After the snow is shaken off, the airbag clamps the cable again.

[0020] Through the setting of the moving mechanism, after the airbag loosens the cable, the cable can be driven to swing up and down through the up and down movement of the arc plate, so that the snow on it can be shaken off, avoiding excessive accumulation of snow on the cable.

[0021] Preferably, the moving mechanism also includes a moving part, which includes a sliding cavity opened in the base, a fixed rod fixedly connected between the upper and lower walls of the sliding cavity, a telescopic airbag sleeved on the fixed rod, the bottom of the telescopic airbag is fixedly connected to the bottom wall of the sliding cavity, a second spring is connected between the top of the telescopic airbag and the top wall of the sliding cavity, a fixed plate is fixedly connected to the top of the telescopic airbag, the fixed plate is slidably mounted on the fixed rod, a connecting rod is fixedly connected to the fixed plate, the connecting rod is fixedly connected to the moving frame, and an air pipe is connected to the output end of the air pump.

[0022] Specifically, during use, when the mobile frame needs to move, the air pump is started, and the output end of the air pump outputs gas, which enters the telescopic airbag through the air pipe, causing the telescopic airbag to expand upward, and then the top end of the telescopic airbag drives the fixed plate and the connecting rod to move upward, and the connecting rod drives the mobile frame to move upward, while compressing the second spring. After the mobile frame moves upward to a certain extent, the air pump pumps air to extract the gas in the telescopic airbag, and then the top end of the telescopic airbag moves downward under the action of the second spring, thereby causing the mobile frame to move downward.

[0023] By setting the moving parts and inflating and deflating the air pump, the moving frame is driven to move up and down to shake off the snow on the cable.

[0024] Furthermore, a sliding member is provided between the movable frame and the base, the sliding member includes a sliding groove opened on the side of the base, a sliding block is slidably connected in the sliding groove, a sliding rod is fixedly connected to the sliding block, and the sliding rod is fixedly connected to the installation frame.

[0025] Specifically, during use, when the installation frame moves up and down, the installation frame drives the sliding rod to move up and down, and the sliding rod drives the sliding block to move up and down in the sliding groove.

[0026] The arrangement of the sliding member makes the moving member more stable when moving up and down.

[0027] Preferably, the connecting member includes a mounting ring fixedly connected to the base, a fixing ring fixedly connected to the clamping seat, the mounting ring and the fixing ring are located at the end of the clamping seat away from the hinged end with the base, bolts are provided through the mounting ring and the fixing ring, and a nut is threadedly connected to the lower end of the bolt.

[0028] Preferably, a limiting ring is fixedly connected in the connecting hole, and the bottom end of the sliding cylinder abuts against the limiting ring.

[0029] Preferably, a rubber pad is fixedly connected to the inner wall of the clamping groove and the upper groove.

[0030] Preferably, two mounting plates are symmetrically fixedly connected to the bottom surface of the base, and two through holes are formed on the mounting plates.

[0031] The beneficial effects of the present invention are:

[0032] 1. Through the arrangement of the base, the clamping seat and the upper clamping seat, three cables can be clamped, and through the hinged arrangement of the clamping seat and the base, and the hinged arrangement of the upper clamping seat and the clamping seat, the cables can be easily inserted into the clamping groove and the upper clamping groove, thereby facilitating the connection between the hardware and the cables, and through the arrangement of the airbag, the size of the airbag can be adjusted according to the size of the cable, so as to better clamp the cable, and through the arrangement of the air source part, the airbag can be easily adjusted to improve the adaptability of the device, and during long-term use, the size of the airbag can be adjusted according to the deformation of the cable to keep the cable clamped and fixed.

[0033] 2. Through the setting of the air source component, when the clamping seat is buckled onto the base, the push plate is driven to move by the movement of the push rod, thereby pushing the gas in the cavity into the airbag, causing the airbag to expand, thereby clamping the cable.

[0034] 3. Through the setting of the power part, the solenoid valve can be opened to discharge the gas in the airbag through the air hole, thereby releasing the clamping of the cable, facilitating the movement of the cable, reducing the steps of disassembling the connecting parts, and being convenient and quick. Moreover, through the setting of the air pump, when it is necessary to re-clamp the cable, the gas can be introduced into the airbag to re-clamp the cable, which is convenient for operation.

[0035] 4. Through the setting of the moving mechanism, after the airbag releases the cable, the cable can be driven to swing up and down through the up and down movement of the arc plate, so that the snow on it can be shaken off, avoiding excessive accumulation of snow on the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0037] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0038] Figure 3 The three-dimensional structure of the present invention is shown in FIG. Figure 3 ;

[0039] Figure 4 It is a front view of the present invention;

[0040] Figure 5 For the present invention Figure 4 Isometric section view at AA;

[0041] Figure 6 For the present invention Figure 5 A partial enlarged view of point B in the middle;

[0042] Figure 7 For the present invention Figure 5 A partial enlarged view of point C in the middle;

[0043] Figure 8 It is a right side view of the present invention;

[0044] Fig. 9 For the present invention Figure 8 Isometric section view at mid DD;

[0045] Fig.10 For the present invention Fig. 9 A partial enlarged view of point E in the middle.

[0046] In the figure:

[0047] 1. Clamping mechanism; 11. Base; 12. Clamping groove; 13. Clamping seat; 14. Slot; 15. Clamping groove; 16. Upper clamping seat; 17. Slot; 18. Connector; 181. Mounting ring; 182. Fixing ring; 183. Bolt;

[0048] 2. Adjustment mechanism; 21. Air bag; 22. Air source component; 221. Cavity; 222. Push plate; 223. First spring; 224. Push rod; 225. Connecting groove; 23. Power component; 231. Mounting cavity; 232. Air pump; 233. Air vent; 234. Connecting hole; 235. Air vent; 236. Solenoid valve; 237. Air hole; 238. Sliding cylinder;

[0049] 3. Moving mechanism; 31. Moving frame; 311. Mounting frame; 312. Arc plate; 32. Moving member; 321. Sliding cavity; 322. Fixed rod; 323. Telescopic airbag; 324. Second spring; 325. Connecting rod; 326. Air pipe. DETAILED DESCRIPTION

[0050] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0051] like Figure 1 , 2 As shown in Figures 3, 4 and 5, an embodiment of the present invention discloses a three-core intermediate restraint power cable hardware, including a clamping mechanism 1, wherein the clamping mechanism 1 includes a base 11, wherein the base 11 is symmetrically provided with two semicircular clamping grooves 12, wherein one end of the base 11 is hingedly provided with a clamping seat 13, wherein the bottom surface of the clamping seat 13 is symmetrically provided with two semicircular slots 14, wherein the two slots 14 are respectively connected with the two clamping grooves 12, wherein the upper side surface of the clamping seat 13 is provided with a semicircular upper clamping groove 15, wherein the clamping seat 13 is hingedly provided with a An upper clamping seat 16, wherein a semicircular upper groove 17 is provided on the bottom surface of the upper clamping seat 16, wherein the upper groove 17 is connected to the upper clamping groove 15, wherein a connecting piece 18 is provided between the clamping seat 13 and the base 11, wherein a connecting piece 18 is provided between the clamping seat 13 and the upper clamping seat 16, wherein an adjustment mechanism 2 is provided in the clamping seat 13, wherein the adjustment mechanism 2 comprises a semicircular air bag 21 provided on the inner wall of the two grooves 14 and the upper clamping groove 15, wherein the air bag 21 is connected to an air source part 22.

[0052] Specifically, when in use, two cables are placed on the two clamping grooves 12, and then the clamping seat 13 is rotated so that the clamping seat 13 is buckled on the cable, and then the cable is located in the slot 14, and at the same time the airbag 21 in the slot 14 contacts the cable, and then the base 11 is connected to the clamping seat 13 through the connecting piece 18, and then the third cable is placed in the upper clamping groove 15, and then the upper clamping seat 16 is buckled on the third cable, and then the third cable is located in the upper slot 17, and at the same time the airbag 21 in the upper clamping groove 15 contacts the third cable, and then the clamping seat 13 is connected to the upper clamping seat 16 through the connecting piece 18; then the air source part 22 is started, and the air source part 22 supplies air to the airbag 21, so that the airbag 21 expands, and the airbag 21 clamps the cable.

[0053] Through the arrangement of the base 11, the clamping seat 13 and the upper clamping seat 16, three cables can be clamped, and through the hinged arrangement of the clamping seat 13 and the base 11, and the hinged arrangement of the upper clamping seat 16 and the clamping seat 13, the cables can be easily inserted into the clamping groove 12 and the upper clamping groove 15, thereby facilitating the connection between the hardware and the cables, and through the arrangement of the airbag 21, the size of the airbag 21 can be adjusted according to the size of the cable, so as to better clamp the cable, and through the arrangement of the air source part 22, the airbag 21 can be easily adjusted to improve the adaptability of the device, and during long-term use, the size of the airbag 21 can be adjusted according to the deformation of the cable to keep the cable clamped and fixed.

[0054] like Figure 5 , 6 As shown in Figure 10, the air source component 22 includes a cavity 221 opened in the clamping seat 13, a push plate 222 is slidably connected in the cavity 221, a first spring 223 is connected between the push plate 222 and the bottom wall of the cavity 221, a push rod 224 is fixedly connected to the push plate 222, the push rod 224 extends downward through the clamping seat 13, and three connecting grooves 225 are provided on the top wall of the cavity 221, and the three connecting grooves 225 are respectively connected to the three air bags 21.

[0055] Specifically, when in use, the cable is placed in the upper clamping groove 15, and then the upper clamping seat 16 is snapped onto the clamping seat 13, and then the upper clamping seat 16 is connected to the clamping seat 13 through the connecting piece 18; then the two cables are placed on the clamping groove 12, and then the clamping seat 13 is flipped over so that the clamping seat 13 is snapped onto the base 11. During the snapping process of the clamping seat 13, the push rod 224 abuts against the upper side surface of the base 11, so that the push rod 224 drives the push plate 222 to move toward the top wall of the cavity 221, and the push plate 222 pushes the gas in the cavity 221 into the three airbags 21 through the connecting groove 225, and at the same time the push plate 222 stretches the first spring 223, and then the clamping seat 13 is connected to the base 11 through the connecting piece 18.

[0056] By setting the air source part 22, when the clamping seat 13 is buckled onto the base 11, the push plate 222 is moved by the movement of the push rod 224, thereby pushing the gas in the cavity 221 into the airbag 21, causing the airbag 21 to expand, thereby clamping the cable.

[0057] like Figure 3 , 5 As shown in , 7 and 10, a power member 23 is provided in the base 11, and the power member 23 includes an installation cavity 231 opened in the base 11, and an air pump 232 is provided in the installation cavity 231. The bottom wall of the installation cavity 231 is connected to a plurality of air holes 233, and the top wall of the installation cavity 231 is connected to a connecting hole 234, and the output end of the air pump 232 is connected to the connecting hole 234. A ventilation groove 235 is penetrated in the push rod 224, and the ventilation groove 235 penetrates the push plate 222. A solenoid valve 236 is provided in the ventilation groove 235, and four air holes 237 are evenly connected on the side wall of the bottom end of the ventilation groove 235 along the circumferential direction. The air holes 237 are connected to the gap between the base 11 and the clamping seat 13, and a sliding cylinder 238 is slidably connected in the connecting hole 234, and the diameter of the connecting hole 234 is equal to the diameter of the ventilation groove 235.

[0058] Specifically, when in use, after the cable is installed, when it needs to be moved to a certain extent, the solenoid valve 236 is opened, and the gas in the airbag 21 enters the cavity 221 from the connecting groove 225 under the squeezing action of the airbag 21 and the cable, and then the gas is discharged from the air hole 237 through the vent groove 235, loosening the clamping of the cable, so that the cable can be moved to a certain extent, avoiding the need to disassemble the connector 18 again; after the cable has moved, when the cable needs to be clamped again, the air pump 232 is started, and the air pump 232 draws gas through the air hole 233, and then the gas is supplied to the connector through the output end. In the connecting hole 234, the gas in the connecting hole 234 drives the sliding cylinder 238 to move upward, so that the sliding cylinder 238 enters the ventilation groove 235, and the sliding cylinder 238 closes the air hole 237. At the same time, the top of the sliding cylinder 238 abuts against the edge of the solenoid valve 236, and the sliding cylinder 238 stops moving. Then the gas enters the airbag 21 through the solenoid valve 236 and the ventilation groove 235, so that the airbag 21 expands again to clamp the cable. Then the solenoid valve 236 is closed, and then the air pump 232 is closed. The sliding cylinder 238 slides into the connecting hole 234 under the action of its own gravity.

[0059] Through the setting of the power part 23, the solenoid valve 236 can be opened to allow the gas in the airbag 21 to be discharged through the air hole 237, thereby releasing the clamping of the cable, facilitating the movement of the cable, reducing the steps of disassembling the connecting part 18, and being convenient and quick. Moreover, through the setting of the air pump 232, when it is necessary to re-clamp the cable, gas can be introduced into the airbag 21 to re-clamp the cable, which is convenient for operation.

[0060] Furthermore, the air pump 232 and the solenoid valve 236 are prior art and will not be described in detail.

[0061] like Figure 1 , 2 As shown in FIG. 3 , two moving mechanisms 3 are symmetrically arranged in the base 11. The moving mechanism 3 includes a moving frame 31 slidably arranged on the base 11. The moving frame 31 includes a mounting frame 311. Three arc plates 312 are fixedly connected to the mounting frame 311. The three arc plates 312 are respectively abutted against the bottom surfaces of three cables.

[0062] Specifically, during use, in an area with heavy snowfall, when there is too much snow on the cable, the solenoid valve 236 is opened, the solenoid valve 236 discharges the gas in the airbag 21, thereby loosening the cable, and then the movable frame 31 is moved up and down, so that the arc plate 312 drives the cable to swing up and down, shaking off the snow on it. After the snow is shaken off, the airbag 21 clamps the cable again.

[0063] By setting the moving mechanism 3, after the airbag 21 loosens the cable, the cable can be driven to swing up and down by the up and down movement of the arc plate 312, so that the snow on it can be shaken off, avoiding excessive accumulation of snow on the cable.

[0064] like Figure 5 , 7 As shown, the moving mechanism 3 also includes a moving part 32, and the moving part 32 includes a sliding cavity 321 opened in the base 1, a fixing rod 322 is fixedly connected between the upper and lower walls of the sliding cavity 321, a telescopic airbag 323 is sleeved on the fixing rod 322, the bottom of the telescopic airbag 323 is fixedly connected to the bottom wall of the sliding cavity 321, a second spring 324 is connected between the top of the telescopic airbag 323 and the top wall of the sliding cavity 321, a fixing plate is fixedly connected to the top of the telescopic airbag 323, the fixing plate is slidably sleeved on the fixing rod 322, a connecting rod 325 is fixedly connected to the fixing plate, the connecting rod 325 is fixedly connected to the moving frame 31, and an air pipe 326 is connected to the output end of the air pump 232, and the air pipe 326 is connected to the telescopic airbag 323.

[0065] Specifically, during use, when the movable frame 31 needs to move, the air pump 232 is started, and the output end of the air pump 232 outputs gas, which enters the telescopic airbag 323 through the air pipe 326, causing the telescopic airbag 323 to expand upward, and then the top of the telescopic airbag 323 drives the fixed plate and the connecting rod 325 to move upward, and the connecting rod 325 drives the movable frame 31 to move upward, while compressing the second spring 324. After the movable frame 31 moves upward to a certain extent, the air pump 232 is evacuated to extract the gas in the telescopic airbag 323, and then the top of the telescopic airbag 323 moves downward under the action of the second spring 324, thereby causing the movable frame 31 to move downward.

[0066] By setting the moving part 32 and by the inflation and deflation of the air pump 232, the moving frame 31 is driven to move up and down to shake off the snow on the cable.

[0067] Furthermore, a sliding member is provided between the movable frame 31 and the base 11, and the sliding member includes a sliding groove opened on the side of the base 11, a sliding block is slidably connected in the sliding groove, a sliding rod is fixedly connected to the sliding block, and the sliding rod is fixedly connected to the installation frame 311.

[0068] Specifically, during use, when the installation frame 311 moves up and down, the installation frame 311 drives the sliding rod to move up and down, and the sliding rod drives the sliding block to move up and down in the sliding groove.

[0069] By setting the sliding member, the moving member 31 is more stable when moving up and down.

[0070] like Fig. 9 As shown, the connecting member 18 includes a mounting ring 181 fixedly connected to the base 11, and a fixing ring 182 is fixedly connected to the clamping seat 13. The mounting ring 181 and the fixing ring 182 are located at the end of the clamping seat 13 away from the hinged end with the base 11, and bolts 183 are provided through the mounting ring 181 and the fixing ring 182, and nuts are threadedly connected to the lower ends of the bolts 183.

[0071] Specifically, during use, when the clamping seat 13 is buckled on the base 11, the fixing ring 182 corresponds to the mounting ring 181, and then the bolt 183 is passed through the fixing ring 182 and the mounting ring 181, and then the nut is screwed on from the lower end of the bolt 183, and the fixing ring 182 and the mounting ring 181 are connected under the cooperation of the nut and the bolt 183, thereby connecting the clamping seat 13 to the base 11.

[0072] By setting the connecting piece 18, the bolt 183 cooperates with the nut to connect the clamping seat 13 and the base 11, which is easy to install and has a stable connection.

[0073] Furthermore, a limiting ring is fixedly connected in the connecting hole 234, and the bottom end of the sliding cylinder 238 abuts against the limiting ring.

[0074] Specifically, by setting a limiting ring, the height of the limiting cylinder 238 is limited, so that the limiting cylinder 238 is kept at the upper part of the connecting hole 234, and it is convenient to enter the ventilation groove 235.

[0075] Furthermore, a rubber pad is fixedly connected to the inner wall of the clamping groove 12 and the upper groove 17 .

[0076] Specifically, during use, by providing the rubber pad, when the hardware clamps the cable, damage to the cable sheath is reduced, and at the same time, the friction between the hardware and the cable is improved.

[0077] like Figure 3 As shown, two mounting plates are symmetrically fixedly connected to the bottom surface of the base 11, and two through holes are formed on the mounting plates.

[0078] Specifically, when in use, the hardware is installed through the through hole.

[0079] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0080] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0081] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0082] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A three-core intermediate restraint power cable fitting, characterized in that: The clamping mechanism (1) comprises a base (11), the base (11) is symmetrically provided with two semicircular clamping grooves (12), one end of the base (11) is hingedly provided with a clamping seat (13), the bottom surface of the clamping seat (13) is symmetrically provided with two semicircular openings (14), the two openings (14) are respectively connected with the two clamping grooves (12), the upper side surface of the clamping seat (13) is provided with a semicircular upper clamping groove (15), the clamping seat (13) is hingedly provided with an upper clamping seat (16), the bottom surface of the upper clamping seat (16) is provided with a semicircular upper clamping groove (15), the clamping seat (13) is hingedly provided with an upper clamping seat (16), and the bottom surface of the upper clamping seat (16) is provided with a semicircular upper clamping groove (15). A semicircular upper groove (17) is provided, the upper groove (17) is connected to the upper clamping groove (15), a connecting piece (18) is provided between the clamping seat (13) and the base (11), a connecting piece (18) is provided between the clamping seat (13) and the upper clamping seat (16), an adjustment mechanism (2) is provided in the clamping seat (13), the adjustment mechanism (2) comprises a semi-circular air bag (21) provided on the inner wall of the two grooves (14) and the upper clamping groove (15), and the air bag (21) is connected to an air source piece (22).

2. A three-core intermediate restrained power cable fitting according to claim 1, characterized in that: The air source component (22) includes a cavity (221) opened in the clamping seat (13), a push plate (222) is slidably connected in the cavity (221), a first spring (223) is connected between the push plate (222) and the bottom wall of the cavity (221), a push rod (224) is fixedly connected to the push plate (222), and the push rod (224) extends downward and passes through the clamping seat (13), and three connecting grooves (225) are arranged on the top wall of the cavity (221), and the three connecting grooves (225) are respectively connected to the three air bags (21).

3. A three-core intermediate restrained power cable fitting according to claim 2, characterized in that: A power member (23) is arranged in the base (11), the power member (23) comprises a mounting cavity (231) provided in the base (11), an air pump (232) is arranged in the mounting cavity (231), a bottom wall of the mounting cavity (231) is connected with a plurality of air holes (233), a top wall of the mounting cavity (231) is connected with a connecting hole (234), an output end of the air pump (232) is connected with the connecting hole (234), and a ventilation groove is provided through the push rod (224). (235), the ventilation groove (235) passes through the push plate (222), a solenoid valve (236) is arranged in the ventilation groove (235), four air holes (237) are evenly connected and arranged on the side wall of the bottom end of the ventilation groove (235) along the circumferential direction, the air holes (237) are connected to the gap between the base (11) and the clamping seat (13), a sliding cylinder (238) is slidably connected in the connecting hole (234), and the diameter of the connecting hole (234) is equal to the diameter of the ventilation groove (235).

4. A three-core intermediate restrained power cable fitting according to claim 3, characterized in that: Two moving mechanisms (3) are symmetrically arranged in the base (11), the moving mechanism (3) comprising a moving frame (31) slidably arranged on the base (11), the moving frame (31) comprising a mounting frame (311), three arc-shaped plates (312) being fixedly connected to the mounting frame (311), the three arc-shaped plates (312) respectively abutting against the bottom surfaces of three cables.

5. A three-core intermediate restrained power cable fitting according to claim 4, characterized in that: The moving mechanism (3) further comprises a moving part (32), wherein the moving part (32) comprises a sliding cavity (321) provided in the base (1), a fixing rod (322) being fixedly connected between the upper and lower walls of the sliding cavity (321), a telescopic airbag (323) being sleeved on the fixing rod (322), the bottom of the telescopic airbag (323) being fixedly connected to the bottom wall of the sliding cavity (321), and the top of the telescopic airbag (323) being fixedly connected to the sliding cavity (3 A second spring (324) is connected between the top walls of the movable frame (31), a fixing plate is fixedly connected to the top of the telescopic airbag (323), the fixing plate is slidably sleeved on the fixing rod (322), a connecting rod (325) is fixedly connected to the fixing plate, the connecting rod (325) is fixedly connected to the movable frame (31), an air pipe (326) is arranged at the output end of the air pump (232), and the air pipe (326) is connected to the telescopic airbag (323).

6. A three-core intermediate restrained power cable fitting according to claim 5, characterized in that: A sliding member is provided between the movable frame (31) and the base (11), the sliding member comprising a sliding groove provided on the side of the base (11), a sliding block being slidably connected in the sliding groove, a sliding rod being fixedly connected to the sliding block, and the sliding rod being fixedly connected to the installation frame (311).

7. A three-core intermediate restrained power cable fitting according to claim 6, characterized in that: The connecting member (18) comprises a mounting ring (181) fixedly connected to the base (11); a fixing ring (182) fixedly connected to the clamping seat (13); the mounting ring (181) and the fixing ring (182) are located at one end of the clamping seat (13) away from the hinged connection with the base (11); bolts (183) are provided through the mounting ring (181) and the fixing ring (182); and nuts are threadedly connected to the lower ends of the bolts (183).

8. A three-core intermediate restrained power cable fitting according to claim 7, characterized in that: A limiting ring is fixedly connected in the connection hole (234), and the bottom end of the sliding cylinder (238) abuts against the limiting ring.

9. A three-core intermediate restrained power cable fitting according to claim 8, characterized in that: Rubber pads are fixedly connected to the inner walls of the clamping groove (12) and the upper groove (17) respectively.

10. A three-core intermediate restrained power cable fitting according to claim 9, characterized in that: Two mounting plates are symmetrically and fixedly connected to the bottom surface of the base (11), and two through holes are provided on the mounting plates.

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