CN215281672U

CN215281672U - Clamp for multi-model overvoltage and undervoltage protector

Info

Publication number: CN215281672U
Application number: CN202121536316.4U
Authority: CN
Inventors: 覃政友
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2021-12-24
Anticipated expiration: 2031-07-07

Abstract

The application discloses many models crosses anchor clamps for undervoltage protection ware, the utility model provides a pair of many models crosses anchor clamps for undervoltage protection ware aims at solving the problem that same anchor clamps can not detect the mistake undervoltage protection ware of different models among the prior art. The utility model discloses a include: the lifting mechanism is arranged on the side wall of the fixed column and can lift along the length direction of the fixed column; the lifting mechanism is connected with the fixed rod, the lower end of the fixed rod is connected with the telescopic frame, the telescopic frame is provided with linearly arranged thimbles, every two adjacent thimbles form a test unit, and the test unit is respectively connected with the positive pole and the negative pole of the test voltage. The distance between the thimbles can be changed by adjusting the telescopic frame so as to adapt to a large amount of detection of under-voltage protectors of different models without replacing other clamps.

Description

Clamp for multi-model overvoltage and undervoltage protector

Technical Field

The utility model relates to an from undervoltage protection technical field, in particular to multi-model crosses anchor clamps for undervoltage protection ware.

Background

The self-restoring overvoltage and undervoltage protector is a device which can be automatically opened when the overvoltage and undervoltage in the circuit exceed the specified values, and can automatically detect the voltage of the circuit and automatically close when the voltage in the circuit returns to normal. The core part of the self-recovery overvoltage and undervoltage protector is a relay and a control circuit board, the control circuit board controls the relay by collecting current or voltage information in a circuit, when overvoltage and undervoltage occur in a power supply line, the self-recovery overvoltage and undervoltage protector can safely cut off the circuit, the accident caused by sending abnormal voltage into a terminal electric appliance is avoided, when the voltage recovers to a normal value, the protector automatically switches on the circuit within a specified time, and the terminal electric appliance is ensured to normally operate under the unattended condition. The protective circuit is mainly used for protecting overvoltage, undervoltage, phase failure and zero line failure in distribution lines of families and markets.

At present, the detection of the self-recovery overvoltage and undervoltage protector is usually performed through manual one-by-one test, and the detection method has a plurality of defects. The first test of a product consumes much auxiliary time and the test efficiency is low. Secondly, the manual detection has more human factors, and easily causes detection errors, resulting in detection deviation, thereby affecting the product delivery quality.

The publication No. CN105445507A discloses a "anchor clamps for under-voltage protector are crossed to from recovery type" includes the bottom plate, set up two side fixed bolster, the slider base of setting on the bottom plate at bottom plate both ends respectively, be equipped with the elevating platform between two side fixed bolster, the elevating platform on be equipped with the guide pin cover fixed plate, the guide pin cover fixed plate on be equipped with a plurality of pinhole that supply the round pin nail to pass, the round pin pass the pinhole setting, the lateral wall of elevating platform on be equipped with the connecting plate, the connecting plate on be equipped with the fixed pin, the tip of fixed pin be equipped with the stop collar, the slider base on be equipped with the slider that slides on the slider base, the slider on be equipped with the spout that transversely runs through the slider lateral wall, the spout include the low level end of one end, the high level end of the other end, communicate the strip cell body of the slope setting of low level end and high level end, the fixed pin pass the spout setting, and two ends of the sliding block base are respectively provided with a sliding block limiting rod. The slider slides from left to right on the slider base and drives the elevating platform to reciprocate, realizes that the pin compresses tightly and unclamps from the undervoltage protection of crossing of auto-recovery to realize the requirement that detects and put. Although the problem of batch detection is well solved, the clamping tool can only detect one type of under-voltage protector, pin block fixing plates of different types need to be changed for testing other types of under-voltage protectors, and the connecting plate is arranged behind the over-voltage and under-voltage detector, so that the operation is inconvenient during detection.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main objective provides an undervoltage protection utensils anchor clamps are crossed to polytypic aims at solving among the prior art that same anchor clamps can not detect the technical problem of the undervoltage protection ware of crossing of different models.

In order to achieve the above object, the utility model provides a clamp for a multi-model overvoltage and undervoltage protector, which comprises a bottom plate and a fixed column, wherein the fixed column is fixedly connected to the bottom plate, and a lifting mechanism capable of lifting along the length direction of the fixed column is arranged on the side wall of the fixed column; it is characterized by also comprising:

the fixed rod is fixedly connected with the lifting mechanism, a plurality of through grooves are formed in the fixed rod along the length direction of the rod, and adjusting bolts are arranged in the through grooves;

the telescopic frame is arranged on the lower plane of the fixed rod and formed by linearly arranging and connecting a plurality of telescopic units, the telescopic units are rotatably and alternately connected by two connecting short rods with locking holes in the middle, and connecting holes for connecting the telescopic units are formed in the two ends of each connecting short rod; the locking hole is connected with the adjusting bolt;

the thimble, fixed connection is in the connecting hole, every two adjacent thimbles constitute a test unit, and the test unit is connected with the positive negative pole of test voltage respectively.

The telescopic frame has the advantages that the distance between all the ejector pins can be adjusted at one time, so that the distance between the two ejector pins can be adjusted according to the under-voltage protection devices of different models, and the structure is simple. The thimble is used for being hugged closely with the input interface location on the under-voltage protector, switches on test voltage to crossing in the under-voltage protector and tests. The fixed rod connects the telescopic frame with the lifting mechanism, and the telescopic frame is driven to lift by the lifting mechanism. When the telescopic frame is lifted, the thimble is also lifted, so that the under-voltage protector is conveniently put on the clamp for testing or taken out of the clamp after the testing is finished; when the telescopic frame descends, the thimble is connected with the under-voltage protector.

When the under-voltage protector of survey different models during the use, although the size of the under-voltage protector of different models is different, need not change anchor clamps according to the under-voltage protector of different models when using this anchor clamps, only need with adjusting bolt rotation pine removes adjusting bolt, and adjusting bolt drives the expansion bracket and stretches out and draws back, confirms the distance between the thimble according to the actual width of two wiring mouths on the under-voltage protector that detects.

Preferably, the thimble includes: the metal needle comprises a metal sleeve and a metal needle, wherein the metal sleeve is sleeved outside the metal needle, a protruding part is arranged in the middle of the metal sleeve, and a thread and a nut are arranged at the lower end of the protruding part of the metal sleeve; the upper section and the lower section of the metal needle are divided into a metal thick needle and a metal thin needle, and the upper end of the metal thick needle is provided with a part extending along the circumferential direction; and a clamping groove is formed in the outer end of the metal sleeve, and a clamping ring is arranged in the clamping groove. The lower end of the metal sleeve wraps the extending part of the upper end of the metal thick needle, a spring is arranged in the metal sleeve, and the spring is sleeved on the periphery of the metal thin needle.

The thread section arranged on the thimble is matched with the nut, so that the thimble is convenient to install when arranged on the telescopic frame, and can be in thread fit connection like a common bolt to be used for connecting a short rod. The thimble is convenient to overhaul and replace.

The thimble makes the metal needle can stretch out and draw back through the spring that sets up in metal sleeve the inside, can make the thimble tightly contact with under-voltage protector because the elastic action of spring when contacting with under-voltage protector like this.

Preferably, the lifting mechanism comprises a fixed plate, the upper end and the lower end of the fixed plate are respectively provided with a connecting rod and a connecting block, the upper end of the connecting rod is provided with a handle, and the handle at one end is rotatably connected with the connecting rod; the two pairs of sides of the connecting block are different in length, the short side is fixedly connected with the fixing plate, and a through hole is formed in one side of the long side; a vertical rod is arranged in the through hole, a connecting piece is arranged at the upper end of the vertical rod, the lower end of the vertical rod is connected with the fixed rod, and two ends of the connecting piece are respectively connected with the handle and the upper end of the vertical rod in a rotating mode.

The handle through operation elevating system can make elevating system drive the expansion bracket risees or reduces, realizes the rising and the reduction of expansion bracket, when the expansion bracket risees, makes things convenient for under-voltage protector to install anchor clamps and tests or take out under-voltage protector from anchor clamps after the test. When the lifting mechanism is lowered to drive the telescopic frame to be lowered, the thimble on the telescopic frame is connected with the voltage input end on the under-voltage protector, and the test voltage is led into the under-voltage protector, so that the under-voltage protector is tested.

Preferably, the adjusting bolt comprises an adjusting nut and an adjusting screw matched with the adjusting nut, the upper end of the adjusting screw is provided with a thread matched with the adjusting nut, the lower end of the thread of the adjusting screw is provided with a protruding section, and the lower end of the adjusting screw penetrates through the locking hole and is fixedly connected with a rotating pin on the locking hole.

After the adjusting nut is loosened in a rotating mode, the adjusting bolt can slide in the through groove to drive the telescopic frame connected with the lower end of the adjusting bolt, and therefore the distance between the thimbles on the telescopic frame can be adjusted. The telescopic frame can be conveniently driven to move by adjusting the adjusting bolt, and then the effect of adjusting the distance between the thimbles is achieved.

Preferably, the bottom plate is provided with an L-shaped baffle plate which is the same as the telescopic frame in the length direction, an opening of the L-shaped baffle plate faces the fixed column direction and is attached to the bottom plate, and the bottom plate is provided with a sliding groove at each of two ends of the L-shaped baffle plate in the length direction; the sliding block is arranged in the sliding groove and can slide in the sliding groove, a threaded column is arranged at the upper end of the sliding block and penetrates through the L-shaped baffle to be connected with the butterfly nut in a matched mode.

The L-shaped baffle is used for limiting the movement of the under-voltage protector, and the sliding groove is used for adjusting the position of the L-shaped baffle according to the actual size of the under-voltage protector, so that the thimble can be accurately contacted with the wiring port on the thimble when the under-voltage protector is detected.

Preferably, a section of transverse groove is formed in the left side of the L-shaped baffle, a bolt facing the fixing column is arranged on the transverse groove, the bolt is clamped in the transverse groove, an L-shaped side plate is arranged on the other side of the transverse groove, one side of the L-shaped side plate is fixedly connected with the bolt, and an opening of the L-shaped side plate faces the left side.

The L shape curb plate can be so that when detecting the under-voltage protector, through the position of adjusting L shape curb plate, L shape curb plate and the cooperation of L shape baffle, only need its both sides face and L shape curb plate and L shape baffle to offset when putting the under-voltage protector, just can realize putting correctly of under-voltage protector position.

Preferably, the outer wall of the fixing column is provided with a vertical groove in the length direction, the fixing plate is clamped in the vertical groove in a vertically sliding manner, and the fixing plate is connected with a bolt.

The lifting mechanism can adjust the position of the lifting mechanism according to the actual model height of the under-voltage protector. Specifically, the lifting mechanism can slide in the vertical groove by screwing out the bolt, and the lifting mechanism is fixed but can not slide by screwing in the bolt.

Preferably, the outer wall of the upper part of the metal sleeve is provided with an insulating coating.

The insulating coating plays an insulating role and prevents workers from being carelessly operated to get electric shock.

Preferably, the connecting short rod, the fixing rod and the bottom plate are all made of insulating materials.

The connecting short rod, the fixing rod and the bottom plate are made of insulating materials, so that the danger of electric shock of detection personnel can be reduced.

The utility model provides a clamp for multi-model overvoltage and undervoltage protector, through installing a plurality of thimbles on the expansion bracket, not only can detect a large amount of overvoltage and undervoltage protectors fast, can adjust the distance between the thimbles according to the overvoltage and undervoltage protectors of different models simultaneously, and adjust the height of the lifting mechanism according to the model of the tested overvoltage and undervoltage protector, make the thimble better contact with the voltage input port on the overvoltage and undervoltage protector; secondly, the side plate and the L-shaped plate arranged on the bottom plate are used for placing the overvoltage and undervoltage protector more conveniently during testing; and finally, the outer surface of the metal sleeve is set to be an insulating layer, and the bottom plate, the fixed rod and the connecting short rod are set to be insulating materials, so that the metal sleeve has a good protection effect on operators.

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is a structural diagram of the telescopic frame and the fixing rod of the present invention;

FIG. 3 is an enlarged view in area A of FIG. 2;

FIG. 4 is a structural diagram of the thimble of the present invention;

FIG. 5 is a structural diagram of the lifting mechanism of the present invention;

FIG. 6 is a structural view of the telescopic frame of the present invention;

FIG. 7 is a bottom plate structure view of the present invention;

in the figure: 100. the device comprises a bottom plate, a bottom plate 110, butterfly nuts, a sliding groove 120, an L-shaped baffle plate 140, a transverse groove 150 and an L-shaped side plate;

200. a fixed column 210 and a vertical groove;

300. the lifting mechanism 310, the fixing plate 320, the connecting rod 330, the handle 340, the connecting sheet 350, the connecting block 360 and the vertical rod;

400. a fixing rod 410, a through groove 420 and an adjusting bolt;

500. telescopic frame, 510, locking hole, 520, connecting hole, 530, connecting short rod, 540, telescopic

A unit;

600. the thimble, 610, the snap ring, 620, the metal sleeve, 630, the screw thread section, 640, the nut, 650, the spring, 660, the metal needle, 661, the metal fine needle, 662, the metal coarse needle.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As used herein, the singular forms "a", "an", "the" and "the" include plural referents unless the content clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, units, modules, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.

It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Referring to fig. 1 to 3, in an embodiment of the present invention, a multi-type clamp for overvoltage and undervoltage protectors includes a bottom plate 100 and a fixing column 200, the fixing column 200 is fixedly connected to the bottom plate 100, and a lifting mechanism 300 capable of lifting along the length direction of the fixing column 200 is disposed on the side wall of the fixing column 200; it is characterized by also comprising:

the fixing rod 400 is fixedly connected with the lifting mechanism 300, a plurality of through grooves 410 are formed in the fixing rod 400 along the length direction of the rod, and adjusting bolts 420 are arranged in the through grooves 410;

the telescopic frame 500 is arranged on the lower plane of the fixed rod 400 and formed by linearly arranging and connecting a plurality of telescopic units 540, the telescopic units 540 are rotatably and crossly connected by two connecting short rods 530 with locking holes 510 in the middle, locking pins arranged on the locking holes 510 are arranged in the two connecting short rods 530 to be connected into the telescopic units 540, the two connecting short rods 530 can relatively rotate, and connecting holes 550 used for connecting the telescopic units 540 are arranged at the two ends of the connecting short rods 530; the locking hole 510 is connected with the adjusting bolt 420;

the thimble 600 is fixedly connected in the connection hole 550, every two adjacent thimbles 600 form a test unit 540, and the test unit 540 is respectively connected with the positive electrode and the negative electrode of the test voltage.

The overvoltage and undervoltage protector is provided with a voltage input end and a voltage output end, and the voltage input end is composed of two screws which are formed side by side. A plurality of linearly arranged thimbles 600 are arranged on the telescopic frame 500, and every two thimbles 600 form a group of test units, so that the telescopic frame 500 is provided with a plurality of test units which are connected in parallel through two electric wires, and the two electric wires are respectively connected with the positive and negative poles of the test voltage, so that the two thimbles 600 on the test units are respectively connected with the positive and negative poles of the test voltage, and a plurality of over-voltage and under-voltage protectors can be simultaneously detected during testing. The expansion bracket 500 is composed of a plurality of expansion units, so that the expansion bracket 500 can expand and contract, and because the thimble 600 is arranged in the connecting hole 550, the distance between the connecting holes 550 can be adjusted through the expansion of the expansion bracket 500, so that the distance between the thimbles 600 can be adjusted, the distance between the testing thimbles 600 can be adjusted according to the under-voltage protectors of different models, and the purpose of detecting the under-voltage protectors of different models is achieved.

Referring to fig. 4, the thimble 600 includes: the metal needle 660 is sleeved with the metal sleeve 620, the metal sleeve 620 is arranged on the outer side of the metal needle 660 in a sleeved mode, a protruding portion is arranged in the middle of the metal sleeve 620, and a thread section 630 and a nut 640 are arranged at the lower end of the protruding portion of the metal sleeve. The screw thread section 630 and the nut 640 can be used in a matched manner, so that the thimble 600 can be connected into the connecting hole 550 on the telescopic frame 500 through the screw nut, and the thimble is convenient to connect and disassemble and repair and can also play a role of a bolt for connecting the telescopic unit 540.

The upper section and the lower section of the metal needle 660 are divided into a metal thick needle 662 and a metal thin needle 661, and the upper end of the metal thick needle 662 is provided with a part extending along the circumferential direction; a clamping groove is formed in the outer end of the metal sleeve 620, and a clamping ring 610 is arranged in the clamping groove.

The lower end of the metal sleeve 620 wraps the extension part of the upper end of the metal thick needle 662, a spring 650 is arranged in the metal sleeve 620, and the spring 650 is sleeved on the periphery of the metal thin needle 661.

Make metal needle 660 can stretch out and draw back through the spring 650 that sets up in metal sleeve 620 inside, can make thimble 600 tightly contact with under-voltage protector because spring 650's elastic action when contacting with under-voltage protector like this.

Referring to fig. 5, the lifting mechanism 300 includes a fixing plate 400, the fixing plate 400 is provided at upper and lower ends thereof with a connecting rod 320 and a connecting block 350, respectively, the upper end of the connecting rod 320 is provided with a handle, and one end of the handle 330 is rotatably connected with the connecting rod 320;

two pairs of the connecting blocks 350 have different lengths, the short edges are fixedly connected with the fixing plate 400, and one side of the long edge is provided with a through hole; be provided with a montant 360 in the through-hole, the upper end of montant 360 is provided with

connection piece

340, and 360 lower extremes of montant are connected with dead lever 400, and connection piece 340 both ends are rotated with the upper end of handle 330 and montant 360 respectively and are connected.

Handle 330 through operation elevating system 300 can make elevating system 300 can drive the expansion bracket 500 and rise or reduce, realizes the rising and the reduction of expansion bracket 500, when the expansion bracket 500 rose, makes things convenient for under-voltage protector to install anchor clamps and tests or take out under-voltage protector from anchor clamps after the test. When elevating system 300 reduces and drives the expansion bracket 500 and reduce, thimble 600 on the expansion bracket 500 is connected with the voltage input end on the under-voltage protector, leads into under-voltage protector with test voltage to test under-voltage protector. And because the spring 660 is arranged in the thimble 600, the thimble 600 has elasticity, and the thimble 600 can be more firmly connected with the under-voltage protector in a tight manner by matching with the use of the lifting mechanism 300.

Referring to fig. 3, the adjusting bolt 420 includes an adjusting nut and an adjusting screw matched with the adjusting nut, a thread matched with the adjusting nut is provided at an upper end of the adjusting screw, a protruding section is provided at a lower end of the thread of the adjusting screw, and a lower end of the adjusting screw is fixedly connected with a rotating pin passing through the locking hole 510 and being fixed to the locking hole 510.

After the adjusting nut is loosened in a rotating mode, the adjusting bolt 420 can slide in the through groove, and the lower end of the adjusting bolt is fixedly connected with the rotating pin on the telescopic frame 500, so that the telescopic frame 500 connected with the lower end of the adjusting bolt can be driven to move when the adjusting bolt slides, the telescopic frame 500 stretches, and the distance between the ejector pins 600 on the telescopic frame 500 can be adjusted. Therefore, the telescopic frame 500 can be conveniently driven to move by adjusting the adjusting bolt 420, and the distance between the thimbles 600 can be further adjusted by adjusting the distance between the thimbles 600.

Referring to fig. 7, an L-shaped baffle 130 having the same length direction as the expansion bracket 500 is disposed on the bottom plate 100, an opening of the L-shaped baffle 130 faces the fixing column 200 and is attached to the bottom plate 100,

the bottom plate 100 is provided with a sliding groove 120 at both ends of the L-shaped baffle 130 in the length direction, respectively;

a sliding block is arranged in the sliding groove 120 and can slide in the sliding groove 120, a threaded column is arranged at the upper end of the sliding block and penetrates through the L-shaped baffle 130 to be connected with the butterfly nut 110 in a matched mode.

L shape baffle 130 is used for restricting under-voltage protector's motion, and the effect of sliding tray 120 can be according to under-voltage protector's actual size adjusting L shape baffle 130's position, and after adjusting suitable position with L shape baffle 130, only need offset under-voltage protector side and L shape baffle 130 when detecting under-voltage protector, just can make thimble 600 can be convenient when detecting under-voltage protector and the wiring mouth accuracy on the under-voltage protector contacts.

A section of transverse groove 140 is arranged on the left side of the L-shaped baffle 130, a bolt facing the fixing column 200 is arranged on the transverse groove 140, the bolt is clamped in the transverse groove 140, an L-shaped side plate 150 is arranged on the other side of the transverse groove 140, one side of the L-shaped side plate 150 is fixedly connected with the bolt, and the opening of the L-shaped side plate 150 faces the left side.

L shape curb plate 150 can be so that when detecting the under-voltage protector, through the position of adjusting L shape curb plate 150, L shape curb plate 150 cooperates with L shape baffle 130, only needs its side and the back on the left side to offset with L shape curb plate 150 and L shape baffle 130 respectively when putting a set of under-voltage protector under test simultaneously, just can realize putting the correct of under-voltage protector position, convenient operation is swift.

Referring to fig. 1 and 5, the outer wall of the fixing post 200 is provided with a vertical groove 210 in the length direction, a fixing plate 400 is vertically slidably fastened in the vertical groove 210, and a bolt is connected to the fixing plate 400.

The lifting mechanism 300 can adjust the position of the lifting mechanism 300 according to the height of the actual model of the overvoltage and undervoltage protector. During specific operation, the back-out bolt makes fixed plate 310 can slide in erecting form groove 210, when sliding to the height that matches with the under-voltage protector that is tested, the back-in bolt makes fixed plate 310 fixed nonskid, better more practical be used for detecting the under-voltage protector that crosses of different models.

Referring to fig. 1 to 7, the outer wall of the upper portion of the metal sleeve 620 is provided with an insulating coating.

Because the practical high voltage that is detected time measuring for this operation belongs to dangerous operation, for better protection operating personnel, insulating coating plays insulating effect, prevents that the staff from operating carelessly and electrocuteeing. And the connection short bar 530, the fixing bar 400 and the base plate 100 are all insulating materials. The operation safety of the tester is protected more effectively.

During the use, at first according to the distance adjustment thimble 600 between the input on the under-voltage protector of crossing that is tested, the concrete way is rotatory pine with adjusting bolt 420, later with adjusting bolt 420 in the horizontal inslot slip drive thimble 600 slide for the distance between the thimble 600 and cross the distance phase-match between the input on the under-voltage protector. The height of the lifting mechanism 300 is adjusted according to the tested overvoltage and undervoltage protector, specifically, the bolt on the fixing plate 400 is screwed off, so that the fixing plate 400 can slide in the sliding groove on the fixing column 200, and the position of the lifting mechanism 300 is determined according to the height of the tested overvoltage and undervoltage protector. Finally, the positions of the L-shaped baffle 130 and the L-shaped side plate 150 are adjusted, so that the thimble 600 can be connected with the input end of the overvoltage and undervoltage protector by abutting against the L-shaped side plate 150 and the L-shaped baffle 130 when the tested overvoltage and undervoltage protector is tested. After the above steps are adjusted, the handle 330 is pulled to lift the lifting mechanism 300, the tested undervoltage protector is placed on the bottom plate 100, the handle 330 is pulled after the undervoltage protector is placed, the lifting mechanism 300 is adjusted downwards, so that the thimble 600 is connected with the input end of the undervoltage protector, then the test is performed, the handle is pulled to adjust the lifting mechanism 300 upwards after the test is completed, the undervoltage protector is taken out, and the whole test process is completed.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.

Claims

1. A clamp for multi-model overvoltage and undervoltage protectors comprises a bottom plate and a fixed column, wherein the fixed column is fixedly connected to the bottom plate, and a lifting mechanism capable of lifting along the length direction of the fixed column is arranged on the side wall of the fixed column; it is characterized by also comprising:

2. The clamp for the under-voltage protector is crossed to polytypic according to claim 1, characterized in that, the thimble includes: the metal needle comprises a metal sleeve and a metal needle, wherein the metal sleeve is sleeved on the outer side of the metal needle, a protruding part is arranged in the middle of the metal sleeve, and a thread section and a nut are arranged at the lower end of the protruding part of the metal sleeve;

the upper section and the lower section of the metal needle are divided into a metal thick needle and a metal thin needle, and the upper end of the metal thick needle is provided with a part extending along the circumferential direction; a part of the upper end of the metal fine needle is arranged at the outer end of the metal sleeve, a clamping groove is formed in the metal fine needle at the outer end of the metal sleeve, and a clamping ring is arranged in the clamping groove;

the lower end of the metal sleeve is wrapped on the extending part of the upper end of the metal thick needle, and a spring is arranged in the metal sleeve and sleeved on the periphery of the metal thin needle.

3. The clamp for the multi-model under-voltage protector according to claim 1, wherein the lifting mechanism comprises a fixed plate, a connecting rod and a connecting block are respectively arranged at the upper end and the lower end of the fixed plate, a handle is arranged at the upper end of the connecting rod, and one end of the handle is rotatably connected with the connecting rod;

the two pairs of sides of the connecting block are different in length, the short side is fixedly connected with the fixing plate, and a through hole is formed in one side of the long side; a vertical rod is arranged in the through hole, a connecting piece is arranged at the upper end of the vertical rod, the lower end of the vertical rod is connected with the fixed rod, and two ends of the connecting piece are respectively connected with the handle and the upper end of the vertical rod in a rotating mode.

4. The clamp for the multi-model under-voltage protector according to claim 1, wherein the adjusting bolt comprises an adjusting nut and an adjusting screw rod matched with the adjusting nut, the upper end of the adjusting screw rod is provided with a thread matched with the adjusting nut, the lower end of the thread of the adjusting screw rod is provided with a protruding section, and the lower end of the adjusting screw rod is fixedly connected with a rotating pin which penetrates through the locking hole and is arranged on the locking hole.

5. The clamp for the multi-model overvoltage and undervoltage protector as claimed in claim 3, wherein the bottom plate is provided with an L-shaped baffle plate having the same length direction as the expansion bracket, an opening of the L-shaped baffle plate faces the fixing column direction and is attached to the bottom plate, and the bottom plate is provided with a sliding groove at each of two ends of the L-shaped baffle plate in the length direction; the sliding block is arranged in the sliding groove and can slide in the sliding groove, a threaded column is arranged at the upper end of the sliding block and penetrates through the L-shaped baffle to be connected with the butterfly nut in a matched mode.

6. The clamp for the multi-model under-voltage protector according to claim 5, wherein a section of transverse groove is arranged on the left side of the L-shaped baffle, a bolt is arranged on the transverse groove, the bolt is clamped in the transverse groove, an L-shaped side plate is arranged on the other side of the transverse groove, one side of the L-shaped side plate is fixedly connected with the bolt, and the opening of the L-shaped side plate faces the left side.

7. The clamp for the multi-model overvoltage and undervoltage protector as claimed in claim 5, wherein a vertical groove is formed in an outer wall of the fixing column in a length direction, the fixing plate is vertically slidably clamped in the vertical groove, and a bolt is connected to the fixing plate.

8. The clamp for the under-voltage protector is characterized in that the outer wall of the upper part of the metal sleeve is provided with an insulating coating.

9. The clamp for the multi-model under-voltage protector as claimed in claim 4, wherein the connecting short rod, the fixing rod and the bottom plate are made of insulating materials.