A cable fault locator

Abstract

The present invention provides a cable fault locator, which belongs to the technical field of locators. The invention comprises a box, a locator body, a moving wheel and a detection mechanism. The locator body is fixed inside the box, the moving wheel is connected to the bottom of the box, and the detection mechanism comprises two metal guides symmetrically connected to the bottom of the box and passing through the box and electrically connected to the locator body. A support frame is connected between the two metal guides, a rectangular groove is provided in the middle of the lower end of the support frame, a roller for limiting the position of the cable is installed in the rectangular groove, a groove corresponding to the cable is provided in the middle of the roller, and the groove can better contact the cable, detection parts are slidably connected to both sides of the support frame, and a transmission component for driving the detection part to realize up and down reciprocating movement is provided above the detection part, so that the detection part realizes intermittent detection effect under the action of the power component; the present invention can realize intermittent automatic detection effect by utilizing the detection mechanism, which solves the problem that conventional handheld locators require the detection line on the locator to contact the cable for detection.

Description

Technical Field

[0001] The present invention relates to the technical field of locators, and in particular to a cable fault locator. Background Art

[0002] The cable fault locator is a comprehensive cable fault detection instrument. The cable fault locator includes a locator host and a handheld probe placed in a box. It can test the cable's high-resistance flashover faults, high and low-resistance grounding, short circuits, cable breaks, poor contact and other faults.

[0003] At present, the cable fault locator chassis generally needs to be carried to find the location of the cable fault. However, since the cable is relatively long and the fault location is unclear, the cable fault locator chassis needs to be carried to detect the cable section by section until the location of the cable fault is found. This method increases the workload of the staff and reduces the efficiency of cable fault troubleshooting due to the heavy weight of the cable fault locator chassis. Therefore, a cable fault locator is proposed to solve the above problems. Summary of the Invention

[0004] In view of this, the present invention provides a cable fault locator that utilizes a detection mechanism to achieve intermittent automatic detection effects, thereby solving the problem that conventional handheld locators require the detection line on the locator to contact the cable for detection.

[0005] In order to solve the above technical problems, the present invention provides a cable fault locator, comprising:

[0006] Box;

[0007] A locator body, wherein the locator body is fixed in the box;

[0008] A moving wheel connected to the bottom of the box;

[0009] A detection mechanism is used to detect the cable and find out the location where the cable fault occurs. The detection mechanism is connected to the bottom of the box. The detection mechanism includes two metal guides symmetrically connected to the bottom of the box and passing through the box and connected to the locator body. A support frame is connected between the two metal guides. The lower end of the support frame is connected to a roller for limiting the cable position. Both sides of the support frame are slidably connected with detection parts. A transmission component for driving the detection part to achieve up and down reciprocating movement is provided above the detection part. Under the action of the power component, the detection part achieves the effect of intermittent detection.

[0010] Furthermore, a cover plate is hinged at one upper end of the box body, and a push handle is connected to the other end of the push handle. A linkage mechanism located below the box body is provided between the push handle and the cover plate, and the push handle drives the cover plate to open through the linkage mechanism.

[0011] Furthermore, the linkage mechanism includes a movable frame sliding at the bottom of the box, a return spring is connected between the movable frame and the bottom of the box, one end of the movable frame is hinged to the lower end of the push handle, and the other end of the movable frame is hinged to a connecting rod movably connected to the cover plate, and the connecting rod is movably installed on the box.

[0012] Furthermore, the detection part includes a metal guide block rotatably connected to the metal guide, a positioning detection head sliding on the support frame is provided below the metal guide block, the upper end of the positioning detection head is connected to a metal guide plate corresponding to the metal guide block, and the upper end of the positioning detection head is sleeved on a spring connected to the metal guide plate.

[0013] Furthermore, the transmission assembly includes an insulating column located between the metal guide block and the box body, the insulating column is connected to the metal guide block, and a third pulley is connected to the insulating column. The transmission assembly also includes a rotating shaft and a reduction shaft located at the bottom of the box body, the rotating shaft is connected between two moving wheels, and the reduction shaft is connected to two symmetrically arranged first pulleys and two second pulleys, and the first pulley and the rotating shaft, and the second pulley and the third pulley are all connected by a transmission belt.

[0014] Furthermore, a rack is provided below one end of the moving frame, and the upper portion of the support frame is tooth-shaped and meshes with the rack.

[0015] Furthermore, a limit assembly for limiting the position of the rotating shaft is provided between the movable frame and the rotating shaft, the limit assembly includes a pawl provided under the box body, one end of the pawl is connected to a first shift plate and a second shift plate, the first shift plate and the second shift plate are staggered, and a ratchet bar corresponding to the pawl is provided below the other end of the movable frame, and the limit assembly also includes two shift blocks connected to the rotating shaft and corresponding to the first shift plate and the second shift plate.

[0016] Furthermore, the shift block includes a top end, a bottom end and an elastic sheet, and the top end and the bottom end are connected by the elastic sheet.

[0017] Furthermore, the metal guide includes a connecting rod that passes through the box and is electrically connected to the locator body. The bottom of the box is connected to a fixed plate corresponding to the connecting rod. The support frame is located between the two fixed plates, and the metal guide block is rotatably connected to the fixed plate.

[0018] Furthermore, connecting columns connected to the box body are provided on both sides of the support frame, and universal wheels are installed on the connecting columns.

[0019] The beneficial effects of the above technical solution of the present invention are as follows:

[0020] 1. The detection mechanism can achieve intermittent automatic detection effects, which solves the problem that conventional handheld locators require the detection line on the locator to contact the cable for detection, reduces the intensity of manual operation, and realizes that after the detection piece contacts the ground cable, the current generated by the detection piece contacts the cable and the position of the cable can be detected.

[0021] 2. The transmission assembly can drive the positioning detection head to achieve up and down reciprocating motion during the movement of the box. In order to enable the positioning detection head to detect the cable after the box moves a certain distance, the diameter of the first pulley is larger than the diameter of the second pulley, and the diameter of the rotating shaft is smaller than the diameter of the first pulley, so that when the moving wheel rotates, the speed of the third pulley is reduced.

[0022] 3. The limit assembly can be used to limit and lock the moving frame when the box moves forward, so that the cover is always in the open state, preventing the return spring from driving the moving frame to move. When the box moves backward, the limit assembly can release the limit on the moving frame.

[0023] 4. The arrangement of the rack meshing with the upper portion of the support frame enables the support frame to be folded and stored as a whole, thus preventing the positioning probe from being damaged after contact with external objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic diagram of the box structure of the present invention;

[0025] Figure 2 It is a cross-sectional schematic diagram of the box structure of the present invention;

[0026] Figure 3 A schematic diagram of the transmission structure of the present invention;

[0027] Figure 4 is a schematic diagram of the support frame structure of the present invention;

[0028] Figure 5 For the present invention Figure 2 A magnified schematic diagram of the structure at center A;

[0029] Figure 6 Schematic diagram of the shift block structure of the present invention.

[0030] In the figure: 1. Positioner body; 2. Box body; 4. Push handle; 5. Moving wheel; 6. Moving frame; 7. Rack; 8. Support frame; 10. Roller; 11. Positioning probe; 12. Metal guide plate; 13. Metal guide; 14. Limit assembly; 16. Connecting rod; 17. Cover plate; 21. Return spring; 22. Metal guide block; 23. Insulating column; 24. Slot; 25. Linkage device; 141. Ratchet bar; 142. Ratchet; 143. Rotating shaft; 144. Shift block; 144a. Top end; 144b. Bottom end; 144c. Elastic sheet; 145. Tension spring; 146. First shift plate; 147. Second shift plate; 251. Reduction shaft; 252. First pulley; 253. Second pulley; 254. Third pulley; 26. Connecting column; 28. Universal wheel. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be combined with the appended drawings of the embodiments of the present invention. Figure 1-6 , clearly and completely describing the technical solutions of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments derived by ordinary technicians in this field fall within the scope of protection of the present invention.

[0032] like Figure 1 As shown, in one embodiment, a cable fault locator includes a box 2, a locator body 1, a moving wheel 5 and a detection mechanism. The locator body 1 is fixed inside the box 2, and the moving wheel 5 is connected to the bottom of the box 2. The model of the locator body 1 is ER-ZJBI locator.

[0033] like Figure 4 As shown, in one embodiment, the detection mechanism includes two metal guides 13 symmetrically connected to the bottom of the box 2 and electrically connected to the locator body 1 through the box 2. A support frame 8 is connected between the two metal guides 13. A rectangular groove is provided in the middle of the lower end of the support frame 8. A roller 10 for limiting the position of the cable is installed in the rectangular groove. A groove corresponding to the cable is provided in the middle of the roller 10, and the groove can better contact the cable. Detection parts are slidably connected on both sides of the support frame 8, and a transmission component for driving the detection part to move back and forth up and down is provided above the detection part. Under the action of the power component, the detection part can achieve the effect of intermittent detection.

[0034] In this embodiment, the detection mechanism can achieve intermittent automatic detection effects, which solves the problem that conventional handheld locators require the detection line on the locator to contact the cable for detection, reduces the intensity of manual operation, and realizes that after the detection piece contacts the ground cable, the current generated by the detection piece contacts the cable and the location of the cable can be detected.

[0035] like Figure 3 and Figure 4 As shown, in one embodiment, a cover plate 17 is hinged at one end of the upper part of the box body 2, and the other end of the pushing handle 4 is connected to the pushing handle 4. A linkage mechanism located below the box body 2 is provided between the pushing handle 4 and the cover plate 17, and the pushing handle 4 is driven by the linkage mechanism to drive the cover plate 17 to open. The linkage mechanism includes a moving frame 6 sliding at the bottom of the box body 2, and a return spring 21 is connected between the moving frame 6 and the bottom of the box body 2 to achieve rapid reset after the moving frame 6 moves. The lower end of the pushing handle 4 is provided with a sliding groove that is convenient for the movement between the pushing handle 4 and the moving frame 6. One end of the moving frame 6 slides in the sliding groove, and the other end of the moving frame 6 is hinged with a connecting rod 16 movably connected to the cover plate 17. The connecting rod 16 is movably installed on the box body 2, and a hinge seat is connected to the middle part of one side of the box body 2 near the connecting rod 16. The connecting rod 16 is connected to the hinge seat, and a sliding groove is provided at the lower end of the connecting rod 16, and the other end of the moving frame 6 slides in the sliding groove.

[0036] In this embodiment, when in use, the handle 4 is pushed forward, and the handle 4 drives the movable frame 6 to move backward. The movable frame 6 opens the cover 17 through the connecting rod 16, thereby quickly opening the cover 17 and limiting the position of the cover 17, so that the cover 17 always remains in an open state.

[0037] like Figure 3 and Figure 4 As shown, in one embodiment, a rack 7 is provided below one end of the movable frame 6 close to the cover plate 17, and the top of the support frame 8 is toothed and meshed with the rack 7. The arrangement of the rack 7 meshing with the top of the support frame 8 enables the support frame 8 to be folded and stored as a whole, thereby preventing the positioning detection head 11 from being damaged after contact with external objects.

[0038] like Figure 4 As shown, in one embodiment, the metal guide 13 includes a connecting rod that passes through the housing 2 and is electrically connected to the locator body 1. A fixing plate corresponding to the connecting rod is connected to the lower portion of the housing 2. The support frame 8 is positioned between the two fixing plates, and the metal guide block 22 is rotatably connected to the fixing plates. The fixing plates not only define the position of the support frame 8 but also enhance its stability.

[0039] like Figure 4 As shown, in one embodiment, the detection part includes a metal guide block 22 rotatably connected to the metal guide 13, and a positioning detection head 11 sliding on the support frame 8 is provided below the metal guide block 22. The upper end of the positioning detection head 11 is connected to a metal guide plate 12 corresponding to the metal guide block 22, and a spring connected to the metal guide plate 12 is mounted on the positioning detection head 11.

[0040] The metal guide 13 includes a connecting rod that passes through the box body 2 and is electrically connected to the locator body 1. The bottom of the box body 2 is connected to a fixed plate corresponding to the connecting rod. The support frame 8 is located between the two fixed plates. The metal guide block 22 is rotatably connected to the fixed plate. On the one hand, the fixed plate can limit the position of the support frame 8, and on the other hand, it can increase the stability of the support frame 8.

[0041] In this embodiment, when the metal guide block 22 rotates, the metal guide block 22 can enable the positioning detection head 11 to slide up and down under the action of the metal guide plate 12 and the spring, thereby realizing intermittent power-on detection of the positioning detection head 11, thereby reducing the signal loss of the wire and increasing the sensitivity of the positioning detection head 11.

[0042] like Figure 4 As shown, in one embodiment, the transmission assembly includes an insulating column 23 located between the metal guide block 22 and the housing 2, the metal guide block 22 is a cam guide block, and a slot 24 is opened at one end of the insulating column 23 close to the metal guide block 22, the metal guide block 22 is located in the slot 24 and is flush with the slot 24, and a third pulley 254 is connected to the insulating column 23, and the transmission assembly also includes a rotating shaft 143 and a reduction shaft 251 located at the bottom of the housing 2, the rotating shaft 143 is connected between the two moving wheels 5, and the reduction shaft 251 is connected to two symmetrically arranged first pulleys 252 and two second pulleys 253, the first pulley 252 and the rotating shaft 143, and the second pulley 253 and the third pulley 254 are all connected by a transmission belt, the diameter of the first pulley 252 is larger than the diameter of the second pulley 253, and the diameter of the rotating shaft 143 is smaller than the diameter of the first pulley 252.

[0043] In this embodiment, the transmission assembly can drive the positioning detection head 11 to achieve an up and down reciprocating motion during the movement of the box body 2.

[0044] Among them, in order to enable the positioning detection head 11 to detect the cable after the box 2 moves a certain distance, the diameter of the first pulley 252 is larger than the diameter of the second pulley 253, and the diameter of the rotating shaft 143 is smaller than the diameter of the first pulley 252, so that when the moving wheel 5 rotates, the speed of the third pulley 254 is reduced.

[0045] like Figure 5As shown, in one embodiment, a limiting assembly 14 for limiting the position of the rotating shaft 143 is provided between the movable frame 6 and the rotating shaft 143. The limiting assembly 14 includes a pawl 142 provided at the bottom of the box body 2. One end of the pawl 142 is connected to a first dial plate 146 and a second dial plate 147. The first dial plate 146 and the second dial plate 147 are staggered. A ratchet bar 141 corresponding to the pawl 142 is provided below the end of the movable frame 6 close to the pushing handle 4. The limiting assembly 14 also includes two dial blocks 144 connected to the rotating shaft 143 and corresponding to the first dial plate 146 and the second dial plate 147.

[0046] In this embodiment, the limit assembly 14 can be used to limit and lock the movable frame 6 when the box body 2 moves forward, so that the cover 17 is always in the open state, preventing the return spring 21 from driving the movable frame 6 to move. When the box body 2 moves backward, the limit assembly 14 can release the limit on the movable frame 6.

[0047] like Figure 6 As shown, in one embodiment, the shift block 144 includes a top end 144a, a bottom end 144b and an elastic piece 144c. The top end 144a and the bottom end 144b are connected by the elastic piece 144c, and the elastic piece 144c is located on one side between the top end 144a and the bottom end 144b.

[0048] In this embodiment, in order to prevent the two shift blocks 144 from getting stuck when contacting the first shift plate 146 and the second shift plate 147 respectively during the rotation of the shaft 143, the shift block 144 is divided into a top end 144a and a bottom end 144b, and an elastic piece 144c is provided between the top end 144a and the bottom end 144b to enable the shift block 144 to have a deformation effect.

[0049] like Figure 1 As shown, in one embodiment, connecting columns 26 connected to the box body 2 are provided on both sides of the support frame 8, and universal wheels 28 are installed on the connecting columns 26.

[0050] In this embodiment, when inspecting the cable on the ground, the cable is placed in the middle of the roller 10, and the universal wheel 28 is unfolded. The universal wheel 28 can be used to increase the height of the support frame 8, making it easier for the roller 10 to move on the cable and facilitate the inspection of the cable on the ground.

[0051] Working method of the present invention:

[0052] When in use, first move the box body 2 to a preset position, and push the handle 4 by moving. The push handle 4 drives the connecting rod 16 to rotate through the moving frame 6, and the connecting rod 16 drives the cover 17 to open. At the same time, during the movement of the moving frame 6, the moving frame 6 drives the support frame 8 to extend, so that the roller 10 contacts the ground, and then the roller 10 contacts the cable. The box body 2 moves under the action of the moving wheel 5, and the moving wheel 5 drives one of the shifting blocks 144 on the rotating shaft 143 to rotate, and one of the shifting blocks 144 drives the first shifting plate 146 to move, so that the pawl 142 engages with the ratchet bar 141. When the height of the tension spring 145 is higher than the height of the rotating shaft of the pawl 142, the tension spring 145 applies an upward rotation force to the pawl 142, so that the pawl 142 can continue to engage with the ratchet bar 141, thereby limiting the ratchet bar 141. When the box body 2 moves backward When moving, the moving wheel 5 drives the rotating shaft 143 to rotate in the opposite direction, so that another shift block 144 shifts the second shift plate 147 to drive the pawl 142 to rotate downward, so that the pawl 142 and the ratchet bar 141 are disengaged. Finally, during the movement of the box body 2, the moving wheel 5 rotates through the rotating shaft 143, and the rotating shaft 143 drives the insulating column 23 to rotate through the first pulley 252, the second pulley 253 and the third pulley 254, and the insulating column 23 drives the metal guide block 22 to rotate. When the metal guide block 22 contacts the metal guide piece 12, the locator body 1 transmits the voltage to the positioning detection head 11 through the connection between the metal guide 13, the metal guide block 22 and the metal guide piece 12. At the same time, the positioning detection head 11 contacts the cable to detect whether there is a fault on the cable. The detection result is displayed by the locator body 1, clearly indicating whether there is a problem with the cable.

[0053] In the present invention, unless otherwise clearly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be internal communication between two elements or an interaction relationship between two elements. Unless otherwise clearly specified and limited, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0054] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A cable fault locator, characterized in that: include: Box; The locator body is fixed in the box; Moving wheel, the moving wheel is connected to the bottom of the box; The detection mechanism is used to detect the cable and find the location of the cable fault. The detection mechanism is connected to the bottom of the box. The detection mechanism includes two metal guides symmetrically connected to the bottom of the box and penetrating the box and connected to the locator body. A support frame is connected between the two metal guides. The lower end of the support frame is connected to a roller for limiting the position of the cable. Both sides of the support frame are slidably connected to detection pieces. A transmission assembly for driving the detection piece to achieve up and down reciprocating movement is provided above the detection piece. Under the action of the power assembly, the detection piece can achieve intermittent detection effect; The detection part includes a metal guide block rotatably connected to the metal guide, a positioning detection head sliding on a support frame is provided below the metal guide block, the upper end of the positioning detection head is connected to a metal guide piece corresponding to the metal guide block, and the positioning detection head is sleeved with a spring connected to the metal guide piece; The transmission assembly includes an insulating column located between the metal guide block and the box body, the insulating column is connected to the metal guide block, and a third pulley is connected to the insulating column. The transmission assembly also includes a rotating shaft and a reduction shaft located at the bottom of the box body, the rotating shaft is connected between the two moving wheels, and the reduction shaft is connected to two symmetrically arranged first pulleys and two second pulleys, and the first pulley and the rotating shaft, as well as the second pulley and the third pulley are all connected by a transmission belt; A rack is provided below one end of the moving frame, and the upper portion of the support frame is tooth-shaped and meshes with the rack; The metal guide includes a connecting rod that passes through the box and is electrically connected to the locator body. The bottom of the box is connected to a fixed plate corresponding to the connecting rod. The support frame is located between the two fixed plates, and the metal guide block is rotatably connected to the fixed plate.

2. The cable fault locator according to claim 1, wherein: A cover is hinged at one end of the upper part of the box body, and the other end of the push handle is connected to the push handle. A linkage mechanism located below the box body is provided between the push handle and the cover plate, and the push handle drives the cover plate to open through the linkage mechanism.

3. The cable fault locator according to claim 2, wherein: The linkage mechanism includes a moving frame sliding on the bottom of the box body, a return spring is connected between the moving frame and the bottom of the box body, one end of the moving frame is hinged to the lower end of the push handle, and the other end of the moving frame is hinged to a connecting rod movably connected to the cover plate, and the connecting rod is movably installed on the box body.

4. The cable fault locator according to claim 1, wherein: A limit assembly for limiting the position of the rotating shaft is provided between the moving frame and the rotating shaft. The limit assembly includes a pawl provided under the box body. One end of the pawl is connected to a first shift plate and a second shift plate. The first shift plate and the second shift plate are staggered. A ratchet bar corresponding to the pawl is provided below the other end of the moving frame. The limit assembly also includes two shift blocks connected to the rotating shaft and corresponding to the first shift plate and the second shift plate.

5. The cable fault locator according to claim 4, characterized in that: The shift block comprises a top end, a bottom end and an elastic sheet, and the top end and the bottom end are connected by the elastic sheet.

6. The cable fault locator according to claim 1, wherein: Connecting columns connected to the box body are provided on both sides of the support frame, and universal wheels are installed on the connecting columns.

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