CN107677871B - Adjustable clamp-on ammeter with display - Google Patents

Abstract

The invention relates to a clamp-type ammeter, in particular to an adjustable clamp-type ammeter with a display. Including chuck and support rod, chuck includes left clamp tooth, right clamp tooth, ammeter and clamp shaft, support rod includes fixing device, telescopic device, display screen, cable and rod body, fixing device includes baffle and linkage rod, stop One end of the plate is connected with the right clamp tooth, the middle part of the linkage rod is hinged with the other end of the baffle, one end of the linkage rod is connected with one end of the pull rope, the other end of the linkage rod is abutted with the left clamp tooth, the telescopic device is set on the rod body, and the handshake is set at the end of the rod body , the display screen is set on the rod body, the ammeter is connected with the display, the handshake includes a rotating shaft, a handle and a pulley, one end of the handle is hinged with the rod body, the rotating shaft is set at one end of the handle and the rod body is hinged, the pulley is set on the handle, the pull rope goes around the pulley, pulls The other end of the rope is set on the rotating shaft. The present invention has the beneficial effects of more intuitive indication effect, more reliable, easy to use, adjustable length and the like.

Description

Adjustable clamp-on ammeter with display

technical field

The invention relates to a clamp-type ammeter, in particular to an adjustable clamp-type ammeter with a display.

Background technique

With the increasing development of smart grid, the total leakage protection trip rate of Taiwan district is an important indicator of smart grid. At the same time, there is no effective and rapid means of detecting leakage current in the real power grid. Losses and troubleshooting are time-consuming, labor-intensive, and expensive.

The existing design does not provide the transmission mode of the clamp-type ammeter, which is generally operated in the form of a simple cable, such as a clamp-type ammeter disclosed on October 12, 2016 by Chinese Patent Application Publication No.: CN 106018923 A, including Clamp body, insulating rod, connecting plate, cable, fixed clamp and movable clamp, the fixed clamp and movable clamp are fixedly connected with the two legs of clamp body respectively, and the fixed clamp is fixed on the connection plate On the upper side, the movable clamp is connected with the cable, and the insulating rod is also fixed on the connecting plate, and only a simple solution of the cable is provided.

SUMMARY OF THE INVENTION

The present invention mainly aims at the above problems, and provides an adjustable clamp-type ammeter with a display, which can make the indication effect more intuitive, more reliable, easy to use, and can adjust the length.

The purpose of the present invention is mainly achieved through the following solutions: An adjustable clamp-type ammeter with a display, including a clamp head and a support rod, and the clamp head includes a left clamp tooth, a right clamp tooth, an ammeter and a clamp shaft , the clamping is arranged between the left clamping teeth and the right clamping teeth, the support rod includes a fixing device, a telescopic device, a display screen, a handshake, a cable and a rod body, and the fixing device is arranged at the top of the rod body, The fixing device includes a baffle plate and a linkage rod, one end of the baffle plate is connected with the right clamping tooth, the middle part of the linkage rod is hinged with the other end of the baffle plate, and one end of the linkage rod is connected with one end of the cable, so the The other end of the linkage rod is in contact with the left clamping tooth, the telescopic device is provided on the rod body, the handshake is provided on the end of the rod body, the display screen is provided on the rod body, and the ammeter is connected with the display, The handshake includes a rotating shaft, a handle and a pulley, one end of the handle is hinged with the rod body, the rotating shaft is arranged at one end of the handle and the rod body is hinged, the pulley is set on the handle, and the cable goes around the pulley. , the other end of the cable is arranged on the rotating shaft. When using, use the telescopic device to adjust the device to a suitable length, and then lift the device as a whole. Pull the handle by hand, and the handle makes a circular motion around the rotating shaft. At this time, the pulley on the handle also makes a circular motion around the rotating shaft. The pulley drives the cable, and the cable drives one end of the linkage rod. Under the action of the lever principle, the other end of the linkage rod drives the left Clamp the teeth to open the collet. Put the cable under test into the clamp, release the handle, loosen the cable, close the clamp again, and start measuring the current of the cable under test. The ammeter transmits the measured data to the display screen to complete the measurement and feedback of the cable current. When measurements are complete, repeat the pull-release handle to disengage the unit from the cable.

Preferably, the clip head further includes a leakage detection device, the leakage detection device is arranged on the clip, and the leakage detection device includes a detection device and a signal lamp. If there is leakage in the tested cable, the leakage detection device can play a warning role, and the signal lamp will send out warning signals of different intensities according to the strength of the leakage current.

Preferably, the support rod further includes a lighting device, and the lighting device is arranged on the top end of the rod body. The lighting device can apply light to the operating area near the chuck, which is convenient for current measurement when the light is insufficient.

Preferably, the support rod further includes a steering device, and the steering device is arranged on the rod body. Steering means can make the invention more flexible in use.

Preferably, the handle further includes an adjustment block and an adjustment slot, the adjustment block is arranged on the pulley, and the adjustment slot is arranged on the handle and matched with the pulley. When in use, the position of the pulley and adjustment slot can be selected according to the size of the cable and the ability of the operator. The closer the pulley is to the end of the handle, the greater the force required to pull the handle.

Preferably, the rod body is also provided with a guard plate. The guard allows the cable to move along the rod.

Preferably, a limiter is also provided at one end of the guard plate. The stopper can isolate the friction between the cable and the guard plate, increasing the durability of the cable.

Preferably, grooves are provided on both the pulley and the stopper. The grooves on the pulley and the limiter can prevent the cable from moving left and right out of the action range of the pulley and the limiter.

Therefore, an adjustable clamp-type ammeter with a display of the present invention has the following advantages: the design of the collet, the retractable support rod and the handshake completes the measurement of the cable current. The design of the shaft, pulley and cable gets rid of the way of pulling the cable directly by hand, which is safe and effective. The leakage detection device improves its safety. The design of the adjustment block and the adjustment slot can adjust the force required to pull the same length of cable according to the position of the adjustment block. The guard allows the cable to move along the rod. The stopper can isolate the friction between the cable and the guard plate, increasing the durability of the cable. The grooves on the pulley and the limiter can prevent the cable from moving left and right out of the action range of the pulley and the limiter.

Description of drawings

Accompanying drawing 1 is the structural representation of the present invention;

Illustration description: 1-right clamping tooth, 2-left clamping tooth, 3-clamp shaft, 4-baffle plate, 5-linkage rod, 6-guard plate, 7-lighting device, 8-steering device, 9-display screen , 10-limiter, 11-cable, 12-adjustment block, 13-adjustment groove, 14-pulley, 15-shaft, 16-handle, 17-rod, 18-leakage detection device, 19-extension device.

Detailed ways

The technical solutions of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

Embodiment 1: an adjustable clamp-type ammeter with a display, including a chuck and a support rod, the chuck includes a left clamping tooth 2, a right clamping tooth 1, a leakage detection device 18, an ammeter and a clamping shaft 3, so The clamping is arranged between the left clamping tooth 2 and the right clamping tooth 1, and the support rod includes a fixing device, a telescopic device 19, a steering device 8, a lighting device 7, a display screen 9, a cable 11, a handshake and a rod body 17. The steering device 8 is set on the rod body 17, the fixing device is set on the top of the rod body 17, the lighting device 7 is set on the top of the rod body 17, and the fixing device includes a baffle 4 and a linkage rod 5 , one end of the baffle 4 is connected with the right clip 1, the middle of the linkage rod 5 is hinged with the other end of the baffle 4, one end of the linkage rod 5 is connected with one end of the cable 11, the linkage rod 5 The other end is in contact with the left clamping tooth 2, the telescopic device 19 is arranged on the rod body 17, the display screen 9 is arranged on the rod body 17, the ammeter is connected with the display, and the handshake includes the rotating shaft 15, The handle 16 and the pulley 14, one end of the handle 16 is hinged with the rod body 17, the rotating shaft 15 is provided at the hinged joint between one end of the handle 16 and the rod body 17, the pulley 14 is provided on the handle 16, the cable 11 Going around the pulley 14 , the other end of the cable 11 is arranged on the rotating shaft 15 . The handle 16 further includes an adjustment block 12 and an adjustment slot 13 , the adjustment block 12 is arranged on the pulley 14 , and the adjustment slot 13 is arranged on the handle 16 and cooperates with the pulley 14 . The rod body 17 is also provided with a guard plate 6 . A stopper 10 is also provided at one end of the guard plate 6 . A stopper 10 is also provided at one end of the guard plate 6 . When in use, use the telescopic device 19 to adjust the device to a proper length and move the adjusting block 12 to a proper position in the adjusting slot 13, then turn the steering device 8 to a proper angle to lift the device as a whole. Turn on the lighting device 7, pull the handle 16 by hand, the handle 16 makes a circular motion around the rotating shaft 15, and the pulley 14 on the handle 16 also makes a circular motion around the rotating shaft 15, the pulley 14 drives the cable 11, and the cable 11 drives the linkage rod 5 At one end, under the action of the lever principle, the other end of the linkage rod 5 drives the left clamp tooth 2 to open the clamp. Put the cable under test into the clamp, release the handle 16, loosen the cable 11, close the clamp again, and start measuring the current of the cable under test. If there is leakage in the cable, the leakage detection device 18 is triggered, and the leakage detection device 18 sends out a signal alarm and transmits the leakage data to the display screen 9. If there is no leakage phenomenon, the ammeter transmits the measured data to the display screen 9, complete Measurement and feedback of cable current. After completing the measurement, repeat the pull-release operation of the handle 16 to disengage the device from the cable.

It should be understood that this embodiment is only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Claims (7)

1. a clamp-type ammeter with adjustable display, is characterized in that, comprises chuck and support rod, and described chuck comprises left clamping tooth, right clamping tooth, ammeter and clamping shaft, and described clamping shaft is arranged on Between the left clamp tooth and the right clamp tooth, the support rod includes a fixing device, a telescopic device, a display screen, a handshake, a cable and a rod body, the fixing device is arranged at the top of the rod body, and the fixing device includes a baffle and linkage rod, one end of the baffle is connected with the right clip, the middle part of the linkage rod is hinged with the other end of the baffle, one end of the linkage rod is connected with one end of the cable, the other end of the linkage rod is connected with the left The clamping teeth are in contact, the telescopic device is set on the rod body, the display screen is set on the rod body, the ammeter is connected with the display, the handshake includes a rotating shaft, a handle and a pulley, and one end of the handle is connected to the The rod body is hinged, the rotating shaft is arranged at one end of the handle and the rod body is hinged, the pulley is arranged on the handle, the cable goes around the pulley, and the other end of the cable is arranged on the rotating shaft; the handle It also includes an adjustment block and an adjustment slot, the adjustment block is arranged on the pulley, and the adjustment slot is arranged on the handle and matched with the adjustment block on the pulley. 2 . The adjustable clamp-type ammeter with a display according to claim 1 , wherein the clamp head further comprises a leakage detection device, and the leakage detection device is arranged on the clamp head. 2 . The device includes a detection device and a signal light. 3 . The adjustable clamp-type ammeter with a display according to claim 1 , wherein the support rod further comprises a lighting device, and the lighting device is arranged on the top end of the rod body. 4 . 4 . The adjustable clamp-type ammeter with display according to claim 1 , 2 or 3 , wherein the support rod further comprises a steering device, and the steering device is arranged on the rod body. 5 . 5 . The adjustable clamp-type ammeter with a display according to claim 1 , wherein the rod body is further provided with a guard plate. 6 . 6 . The adjustable clamp-type ammeter with a display according to claim 5 , wherein a limiter is further provided at one end of the protective plate. 7 . 7 . The adjustable clamp-type ammeter with a display according to claim 6 , wherein the pulley and the stopper are provided with grooves. 8 .

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