Cable detection device based on electromagnetic induction

Abstract

The utility model provides a cable detection device based on electromagnetic induction, which comprises a handle, two arc-shaped clamps which are symmetrically and rotatably connected to one end of the handle, a magnetic sensor which is arranged on one side, close to the arc-shaped clamps, of the handle, and a pushing assembly which is arranged between the handle and the two arc-shaped clamps, the sliding assemblies are arranged on the inner sides of the two arc-shaped clamps and annularly arrayed along the axes of the arc-shaped clamps. According to the utility model, when the cable detection device is moved, the magnetic sensor always obtains the magnetic field generated after the cable is electrified, and the magnetic sensor transmits the obtained data to the monitoring computer; when the cable detection device moves to the fault section, the magnetic sensor receives different magnetic field changes, so that the fault position of the cable is detected through the magnetic field changes, and the effect of detecting the internal defects of the cable can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cable detection, in particular to a cable detection device based on electromagnetic induction. BACKGROUND

[0002] With the continuous advancement of urbanization, the cable ratio of urban power grid continues to rise. The scale of State Grid Corporation of China's 110kV and above voltage level cables grows by more than 10% per year, and the current scale is 94,000km. In the long-term service process, affected by factors such as external damage and insulation aging and degradation, cables are prone to various faults. Once the fault occurs, it will cause great loss to social production and safety.

[0003] Looking at the current domestic and foreign research, with the continuous increase of China's power energy demand, the load condition is more and more complex, and the cable equipment coverage rate is increasing year by year, which brings challenges to the efficient preventive detection of cable faults. The current inspection method has high detection cost, low equipment portability, and is difficult to find defects inside the cable sheath. The defects inside the sheath will have a cumulative effect if ignored for a long time, and eventually evolve into a fault or even an accident. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims at providing a cable detection device based on electromagnetic induction, which has high portability, can detect internal defects of the cable, and is convenient for moving detection of the cable at each position.

[0005] The utility model provides the following technical scheme: a cable detection device based on electromagnetic induction, including handle, two arc clamps are connected to one end of the handle in symmetry and rotation, magnetic sensor is arranged on the handle close to one side of the arc clamp, push assembly is arranged between the handle and two arc clamps, and a plurality of sliding assemblies are arranged in the form of annular array along the axis of the two arc clamps, the two arc clamps are rotationally connected with the handle through the rotating shaft, and the push assembly is used to push the two arc clamps to rotate.

[0006] Further, a spring is arranged between the guide block and the push frame, and the spring is used to limit the push frame from sliding on the guide block.

[0007] Further, the pushing frame comprises a T-shaped sliding block slidably connected with the guide block, a U-shaped block arranged on the sliding block, and two push rods arranged at two ends of the U-shaped block respectively, and the two push rods are respectively in extrusion fit with the two contact blocks.

[0008] Further, a slot hole is arranged at each of the two contact blocks in a transverse direction, and the two push rods are respectively located in the two slot holes.

[0009] Further, the sliding assembly comprises a bracket fixedly connected with the inner side of the arc-shaped clamp, and a roller rotatably connected with the bracket.

[0010] Further, the cable detection device further comprises a clamping assembly for clamping the pushing frame.

[0011] Further, the clamping assembly comprises a sliding sleeve arranged on the guide block, a latch slidably connected with the sliding sleeve, a pulling block arranged on the latch, and a recess hole arranged on the pushing frame, and when the latch is inserted into the recess hole, the pushing frame cannot be moved.

[0012] The utility model discloses a cable detection device, which comprises a frame, a pushing assembly arranged on the frame, a sliding assembly arranged on the pushing assembly, a contact block arranged on the sliding assembly, a guide block arranged on the contact block, an arc-shaped clamp arranged on the guide block, and a cable detection device arranged on the arc-shaped clamp. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a three-dimensional structure schematic diagram of the utility model.

[0014] Figure 2 It is a three-dimensional structure schematic diagram of the pushing assembly of the utility model.

[0015] Figure 3 It is a three-dimensional structure schematic diagram of the clamping assembly of the utility model.

[0016] Figure 4 It is a three-dimensional structure schematic diagram of the sliding assembly of the utility model.

[0017] The marks in the drawings are: 1-handle, 2-arc-shaped clamps, 3-magnetic sensor, 4-push assembly, 41-guide block, 42-sliding block, 43-U-shaped block, 44-push rod, 45-contact block, 46-rectangular hole, 47-spring, 5-clamping assembly, 51-sliding sleeve, 52-latch, 53-pulling block, 54-recess, 6-sliding assembly, 61-bracket, 62-roller. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The drawings show several embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0019] It should be noted that when an element is referred to as being "fixedly attached" to another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0021] A cable detection device based on electromagnetic induction, as shown in Figures 1-2 The marks in the drawings are: 1-handle, 2-arc-shaped clamps, 3-magnetic sensor, 4-push assembly, 41-guide block, 42-sliding block, 43-U-shaped block, 44-push rod, 45-contact block, 46-rectangular hole, 47-spring, 5-clamping assembly, 51-sliding sleeve, 52-latch, 53-pulling block, 54-recess, 6-sliding assembly, 61-bracket, 62-roller.

[0022] It can be understood that when the cable needs to be detected, first, the cable is powered on, then the magnetic sensor 3 is connected with the monitoring computer through the data line or through the wireless module to realize the transmission of data, then the operator can hold the handle 1 and pull the pusher to move downward, the downward movement of the pusher drives the two contact blocks 45 to rotate downward, the downward rotation of the contact blocks 45 drives the rotating shaft of the arc-shaped clamp 2 to rotate, thereby making the two arc-shaped clamps 2 rotate in the direction away from each other, and the two arc-shaped clamps 2 are opened, then the operator can place the two arc-shaped clamps 2 close to the cable, so that the cable is placed between the two arc-shaped clamps 2, then the operator pushes the pusher upward, the pusher drives the two contact blocks 45 to rotate upward and reset, the two contact blocks 45 drive the rotating shaft of the two arc-shaped clamps 2 to rotate, so that the two arc-shaped clamps 2 rotate towards each other and fold, when the two arc-shaped clamps 2 fold, the sliding assembly 6 contacts the outer wall of the cable, then the operator can hold the handle 1 and move the entire cable detection device in the direction in which the cable extends, the sliding assembly 6 facilitates the operator to hold the cable detection device and move in the direction in which the cable extends, in the moving process, the magnetic sensor 3 always acquires the magnetic field generated after the cable is powered on, the magnetic sensor 3 transmits the acquired data to the monitoring computer, when a certain interval of the cable fails, the magnetic sensor 3 receives different magnetic field changes in the moving process of the cable detection device, thereby judging the position interval of the cable fault, and improving the positioning speed of the repair, achieving the detection effect, when the entire cable is detected, the operator pulls the pusher again to open the two arc-shaped clamps 2, then moves the arc-shaped clamps 2 away from the cable, so that the cable is no longer located between the two arc-shaped clamps 2.

[0023] In summary, the entire cable detection device is driven by the handle 1 to detect the cable, which can achieve high portability, and in the process of moving the cable detection device, the magnetic sensor 3 always acquires the magnetic field generated after the cable is powered on, the magnetic sensor 3 transmits the acquired data to the monitoring computer, when a certain interval of the cable fails, the magnetic sensor 3 receives different magnetic field changes when the cable detection device moves to the fault interval, thereby detecting the fault position of the cable through the magnetic field changes, so as to achieve the effect of detecting the internal defects of the cable, and further, in the process of moving the cable detection device, the sliding assembly 6 is used to facilitate the movement of the cable detection device, achieving the effect of facilitating the movement of the detection of the cable positions.

[0024] The spring 47 is arranged between the guide block 41 and the pusher, and is used to limit the pusher from sliding on the guide block 41.

[0025] It can be understood that when the operator pulls the push frame to move downward, the spring 47 will be stretched, and when the cable is located between the two arc-shaped clamps 2, the operator only needs to release the push frame, and the spring 47 resets, which drives the push frame to move upward to reset, so that the two arc-shaped clamps 2 are closed, thereby avoiding the need for the operator to push the push frame to move upward to reset, achieving the effect of convenient operation. Moreover, the push frame is not easy to move due to the action of the spring 47, and the two arc-shaped clamps 2 can be in a closed state when the cable detection device moves, achieving the effect of stable detection work.

[0026] As shown in Figure 2 , the push frame includes a T-shaped sliding block 42 slidably connected with the guide block 41, a U-shaped block 43 provided on the sliding block 42, and two push rods 44 respectively provided at both ends of the U-shaped block 43. The two push rods 44 are respectively in extrusion fit with two contact blocks 45, and a horizontal slot 46 is formed on each of the two contact blocks 45. The two push rods 44 are respectively located in the two horizontal slots 46.

[0027] It can be understood that the operator can pull the sliding block 42 to slide downward on the guide block 41, which drives the U-shaped block 43 to slide downward, and the U-shaped block 43 drives the push rod 44 to move downward. Since the push rod 44 is located in the horizontal slot 46, the push rod 44 will drive the contact block 45 to rotate downward, thereby realizing the opening of the arc-shaped clamp 2. Conversely, the upward movement of the sliding block 42 drives the upward movement of the U-shaped block 43, and the upward movement of the U-shaped block 43 drives the upward movement of the push rod 44, which drives the upward rotation of the two contact blocks 45 to reset, thereby making the two arc-shaped clamps 2 in a closed state.

[0028] As shown in Figure 4 , the sliding assembly 6 includes a bracket 61 fixedly connected with the inner side of the arc-shaped clamp 2, and a roller 62 rotatably connected with the bracket 61.

[0029] It can be understood that when the arc-shaped clamp 2 is in a closed state, the roller 62 is in contact with the outer wall of the cable. When the cable detection device is moved, the roller 62 rolls on the outer wall of the cable, thereby facilitating the movement of the cable detection device along the extension direction of the cable.

[0030] As shown in Figure 3 , the cable detection device further includes a clamping assembly 5 for clamping the push frame. The clamping assembly 5 includes a sliding sleeve 51 provided on the guide block 41, a latch 52 slidably connected with the sliding sleeve 51, a pulling block 53 provided on the latch 52, and a recess 54 provided on the push frame. When the latch 52 is inserted into the recess 54, the push frame cannot move.

[0031] It can be understood that when the two arc-shaped clamps 2 are in the folded state, the operator can push the pulling block 53 to move downward, the pulling block 53 drives the pin 52 to slide downward on the sliding sleeve 51, and the pin 52 is inserted into the recess 54, so that the pushing frame cannot move, and when the cable detection device moves, the arc-shaped clamp 2 cannot be opened, and the cable detection device can achieve stable detection effect. When the two arc-shaped clamps 2 need to be opened, the operator can push the pulling block 53 so that the pin 52 is no longer located in the recess 54.

[0032] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0033] The above-described embodiments only express several implementation manners of the present application, the description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the present application patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. An electromagnetic induction based cable detection apparatus, characterized by, The utility model provides a cable detection device, including hand handle, two arc clamps are symmetrically rotatablely connected in one end of hand handle, magnetic sensor is arranged on the side of hand handle close to arc clamp, push assembly is arranged between hand handle and two arc clamps, and a plurality of sliding assemblies are arranged in the inside of two arc clamps along the axis of two arc clamps, and two arc clamps are rotatablely connected with hand handle through rotating shaft, and push assembly is used to push two arc clamps to rotate, the utility model discloses a kind of cable detection device, which can be used to detect the existence of cable, and the existence of cable can be detected by rotating two arc clamps.

2. The cable detection apparatus of claim 1, wherein, Spring is arranged between the guide block and the push frame, and the spring is used to limit the push frame from sliding on the guide block.

3. The cable detection apparatus of claim 1, wherein, The push frame includes a T-shaped sliding block that is slidingly connected to the guide block, a U-shaped block disposed on the sliding block, and two push rods respectively disposed at both ends of the U-shaped block, wherein the two push rods are respectively in abutting engagement with the two contact blocks.

4. The cable detection apparatus of claim 3, wherein, Each of the two contact blocks is provided with a horizontal slot, and the two push rods are respectively located in the two slots.

5. The cable detection apparatus of claim 1, wherein, The sliding assembly includes a bracket fixedly connected to the inside of the arc-shaped clamp and a roller rotatably connected to the bracket.

6. The cable detection apparatus of claim 1, wherein, The cable detection device further includes a clamping assembly for clamping the push frame.

7. The cable detection apparatus of claim 6, wherein, The clamping assembly includes a sliding sleeve disposed on the guide block, a latch slidingly connected to the sliding sleeve, a pulling block disposed on the latch, and a recess hole disposed on the push frame, wherein when the latch is inserted into the recess hole, the push frame cannot move.

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