CN112768164A

CN112768164A - Voltage dependent resistor for electric locomotive protection

Info

Publication number: CN112768164A
Application number: CN202011582114.3A
Authority: CN
Inventors: 黄德贵
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-05-07

Abstract

The invention discloses a piezoresistor for protecting an electric locomotive, which structurally comprises a fixed seat, a protector, a sliding clamping block and a limiting block, wherein the fixed seat is movably matched with the inside of the protector, the protector is in clearance fit with the lower end of the limiting block, the sliding clamping block is movably clamped with the left side of the limiting block, the upper end of the sliding clamping block is in sliding fit with the inside of the fixed seat, the fixed seat comprises a resistor, a power eliminating block, a fixed groove, a conductive wire and a current wire, the resistor is movably clamped with the inner wall of the fixed groove, the lower end of the fixed groove is in clearance fit with the power eliminating block, the lower end of the resistor is welded and connected with the conductive wire, and the current wire is fixedly connected with the lower end of the resistor in an embedding way. The problem that the resistor slips out due to shaking when the vehicle is driven on a bumpy road section is effectively solved.

Description

Voltage dependent resistor for electric locomotive protection

Technical Field

The invention relates to the field of resistors, in particular to a piezoresistor for protecting an electric locomotive.

Background

The voltage dependent resistor is a short-name voltage dependent resistor, and is a voltage limiting type protection device, and by utilizing the nonlinear characteristic of the voltage dependent resistor, when an overvoltage appears between two poles of the voltage dependent resistor, the voltage dependent resistor can clamp the voltage to a relatively fixed voltage value, so that the protection of a rear-stage circuit is realized;

however, the prior art has the following defects: the current piezoresistor for protecting the electric locomotive protects an internal power supply of the electric locomotive, when the electric locomotive runs on a bumpy road section, because the road section bumps, a piezoresistor lead is inserted into an internal resistor fixing seat and is easy to shake upwards in the bumping process, the lead slides and shifts, if the bumping arc degree is too large, the lead is easy to throw the lead out upwards, the lead is led to be separated from the fixing seat, and the piezoresistor is accelerated to be damaged in the repeated sliding and plugging process.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a piezoresistor for protecting an electric locomotive, and solves the problem that the piezoresistor for protecting the electric locomotive in the prior art is used for protecting the internal power supply of the electric locomotive, when the electric locomotive runs on a bumpy road section, a piezoresistor lead inserted into an internal resistor fixing seat is easy to shake upwards in the bumping process due to bumping of the road section, the lead is easy to slide and shift, and the lead is easy to throw out upwards if the bumping arc degree is too large, and is led to be separated from the fixing seat of the piezoresistor, so that the piezoresistor is accelerated to be damaged in the repeated sliding and plugging process.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an electric locomotive is piezo-resistor for protection, its structure includes fixing base, protector, slip fixture block, stopper, the inside clearance fit of fixing base and protector, protector and stopper lower extreme clearance fit, slip fixture block and stopper left side activity block, slip fixture block upper end and the inside sliding fit of fixing base, the fixing base includes resistor, electricity dissipation piece, fixed slot, conductor wire, electric current line, resistor and fixed slot inner wall activity block, the fixed slot lower extreme with electricity dissipation piece clearance fit, the resistor lower extreme and conductor wire welded connection, the electric current line inlays solid with the resistor lower extreme and is connected, the conductor wire with the inside clearance fit of electricity dissipation piece.

The resistor is further improved by the method, the resistor comprises pins, an encapsulating layer, electrodes, a product boundary layer and tin soldering holes, the top ends of the pins are connected with the lower end of the encapsulating layer in an embedded mode, the inside of the encapsulating layer is connected with the electrodes in a clamping mode, the lower ends of the electrodes are in clearance fit with the product boundary layer, the tin soldering holes are connected with the lower end of the encapsulating layer in a welding mode, the tin soldering holes are in clearance fit with the inner sides of the pins, and the tin soldering holes are formed by welding through a low-melting-point tin soldering technology and are fixed on the surface of the lower end of the encapsulating layer to be.

The invention is further improved, the pin comprises an extrusion rod, an adsorption block, a tension spring, a displacement block and a lead rod, the extrusion rod is movably matched with the center of the adsorption block, the lower end of the tension spring is connected with the displacement block in a welding mode, the displacement block is integrally nested and matched with the lead rod, the top end of the tension spring is connected with the inside of the adsorption block in a welding mode, the upper end of the displacement block is in clearance fit with the adsorption block, four extrusion rods are arranged, one group of two extrusion rods is arc-shaped and strip-shaped, has toughness and is connected to the center of the adsorption block.

The invention is further improved, the adsorption block comprises a sucker, a thrust rod, a trigger ring and a swing rod, the sucker is integrally and movably matched with the trigger ring, two sides of the sucker are connected with the swing rod in a welding mode, the center position of the swing rod is connected with the thrust rod in a clamping mode, the thrust rod is integrally and in clearance fit with the trigger ring, the swing rod is provided with two parts, the hinged positions are supported by the thrust rod, and joints at two ends are welded with the outer wall of the sucker.

The invention is further improved, the sucking disc comprises an extrusion block, a movable bin, an air discharging cavity, reversing rods and resistance blocks, the extrusion block is in clearance fit with the inner side of the movable bin, the lower end of the movable bin is fixedly connected with the resistance blocks in an embedded mode, the resistance blocks are in clearance fit with the inner wall of the extrusion block, two sides of the movable bin are hinged with the reversing rods, the reversing rods are in interference fit with the surface of the air discharging cavity, eight reversing rods are arranged, and the two reversing rods are in a group and fixed between the movable bin and the air discharging cavity to be in clearance fit with the movable bin and the air discharging cavity.

The invention is further improved, the extrusion block comprises an air blocking plug, an air dispersing groove, a block body, an elastic block and a plug pipe, the bottom of the air blocking plug is spirally connected with the top end of the plug pipe, the inner wall of the air dispersing groove is fixedly connected with the elastic block, the inner surface of the elastic block is connected with the plug pipe in a clamping manner, the air blocking plug is connected with the inner part of the air dispersing groove in a nesting manner, the block body is in clearance fit with the inner wall of the air dispersing groove, the two air blocking plugs are arc-shaped and are clamped with the top end of the air dispersing groove, and the lower end of the air blocking plugs are spirally connected with the plug pipe.

Advantageous effects

Compared with the prior art, the invention has the following beneficial effects;

1. according to the invention, the resistor is inserted into the fixed groove, so that the displacement block slides upwards, the tension spring is extruded upwards, the extrusion rod extrudes the central position of the suction block, the suction block displaces outwards, and the resistance block is in interference fit with the barriers at the two ends of the suction block and is clamped, and the problem that the resistor slides out due to shaking when the vehicle is driven on a bumpy road section is effectively solved.

2. According to the invention, the barriers on the two sides are adsorbed by the sucking disc, so that the extrusion block is matched with the plug tube by the air blocking plug in the process of being attached to the barriers, the internal air is exhausted and then is matched with the elastic block for interference fit, the subsequent air backflow and entering are avoided, the attachment to the groove barriers is effectively enhanced, and the internal clamping of the resistor is reinforced.

Drawings

Fig. 1 is a schematic structural diagram of a varistor for protecting an electric locomotive according to the present invention.

FIG. 2 is a schematic view of the internal structure of the fixing base of the present invention.

Fig. 3 is a schematic diagram of the internal structure of the resistor according to the present invention.

Fig. 4 is a schematic diagram of the internal structure of the lead according to the present invention.

Fig. 5 is a schematic view of the internal structure of the adsorption block of the present invention.

FIG. 6 is a schematic top view of the chuck of the present invention.

FIG. 7 is a schematic view of the internal structure of the extrusion block of the present invention.

In the figure: a fixed seat-1, a protector-2, a sliding clamping block-3, a limiting block-4, a resistor-11, a static elimination block-12, a fixed groove-13, a conductive wire-14, a current wire-15, a pin-111, an encapsulating layer-112, an electrode-113, a product boundary layer-114, a tin soldering hole-115, an extrusion rod-a 1, an adsorption block-a 2 and a tension spring-a 3, the device comprises a displacement block-a 4, a lead wire rod-a 5, a suction cup-a 21, a thrust rod-a 22, a trigger ring-a 23, a swing rod-a 24, an extrusion block-b 1, a movable cabin-b 2, an air discharge cavity-b 3, a reversing rod-b 4, a resistance block-b 5, an air blocking plug-c 1, an air dispersing groove-c 2, a block body-c 3, an elastic block-c 4 and a plug tube-c 5.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, not all embodiments of the present invention, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.

The invention is further described below with reference to the accompanying drawings:

example 1

As shown in figures 1 to 4:

the structure of the device comprises a fixed seat 1, a protector 2, a sliding clamping block 3 and a limiting block 4, wherein the fixed seat 1 is movably matched with the inside of the protector 2, the lower end of the protector 2 is in clearance fit with the lower end of the limiting block 4, the sliding clamping block 3 is movably clamped with the left side of the limiting block 4, the upper end of the sliding clamping block 3 is in sliding fit with the inside of the fixed seat 1, the fixed seat 1 comprises a resistor 11, a static elimination block 12, a fixed groove 13, a conductive wire 14 and an electric current wire 15, the resistor 11 is movably clamped with the inner wall of the fixed groove 13, the lower end of the fixed groove 13 is in clearance fit with the static elimination block 12, the lower end of the resistor 11 is welded and connected with the conductive wire 14, the electric current.

The resistor 11 comprises a pin 111, an encapsulating layer 112, an electrode 113, a product boundary layer 114 and a soldering hole 115, the top end of the pin 111 is connected with the lower end of the encapsulating layer 112 in a nested manner, the inside of the encapsulating layer 112 is connected with the electrode 113 in a clamped manner, the lower end of the electrode 113 is in clearance fit with the product boundary layer 114, the soldering hole 115 is connected with the lower end of the encapsulating layer 112 in a welded manner, the soldering hole 115 is in clearance fit with the inner side of the pin 111, the soldering hole 115 is formed by welding through a low-melting-point soldering technology and is fixed on the surface of the lower end of the encapsulating layer 112 and fixedly connected with the surface of the lower end of the encapsulating layer in a nested manner, and the soldering hole 115 is favorable for being quickly separated from.

The pin 111 comprises an extrusion rod a1, an adsorption block a2, a tension spring a3, a displacement block a4 and a lead rod a5, the extrusion rod a1 is movably matched with the center of the adsorption block a2, the lower end of the tension spring a3 is connected with the displacement block a4 in a welded mode, the displacement block a4 is integrally nested and matched with the lead rod a5, the top end of the tension spring a3 is connected with the inside of the adsorption block a2 in a welded mode, the upper end of the displacement block a4 is in clearance fit with the adsorption block a2, four or two groups of the extrusion rods a1 are arranged, are in an arc-shaped strip shape and have toughness, and are connected to the center of the adsorption block a2, and the displacement block a4 is favorable for being matched with itself to push out the lead rod a5, so that the displacement block a4 slides upwards to squeeze the upper end structure.

The specific working principle is as follows:

the invention puts the fixed seat 1 into the appointed position of the electric locomotive, the limited sliding is carried out by the limited block 4, then the sliding fixture block 3 is pulled out leftwards, the fixed seat is clamped, the electric wire is connected from the joint of the protector 2 after the clamping, so that the resistor 11 is inserted into the fixed groove 13, the bottom end current wire is matched, in order to prevent the current leakage, the bottom of the resistor 11 is welded, the electric wire 14 is connected into the electricity eliminating block 12 for carrying out the surplus current offset, after the pin 111 of the resistor 11 is inserted, the displacement block a4 is displaced upwards, so that the elastic spring a3 is extruded to lead the extrusion rod a1 at the upper end of the elastic spring a3 to bear force, the lead rod a5 is exposed to be movably matched with the lower end, the adsorption blocks a2 at the two ends are clamped with the fixed groove 13, finally, one end of the tin welding hole 115 is welded with the spring at the other, therefore, the displacement block a4 slides upwards, the tension spring a3 is pressed upwards, the pressing rod a1 presses the center position of the suction block a2, the suction block a2 is displaced outwards, interference fit is carried out between the suction block a and the two end barriers of the suction block a, the suction block a is clamped with the suction block a, and the problem that the resistor 11 slides out due to shaking when the driver drives on a bumpy road section is effectively solved.

Example 2:

as shown in fig. 5 to 7:

wherein, adsorb piece a2 includes sucking disc a21, thrust rod a22, triggers ring a23, pendulum rod a24, sucking disc a21 and the whole movable fit of triggering ring a23, sucking disc a21 both sides and pendulum rod a24 welded connection, pendulum rod a24 central point puts and is connected with thrust rod a22 block, thrust rod a22 is whole with trigger ring a23 clearance fit, pendulum rod a24 is equipped with two, and articulated department is supported by thrust rod a22, and both ends joint welds with sucking disc a21 outer wall, and wherein sucking disc a21 is favorable to adsorbing both ends cell wall to slide from top to bottom in the in-process that uses appears, and the problem of throwing away appears.

The suction cup a21 comprises an extrusion block b1, a movable bin b2, an air discharge cavity b3, a reversing rod b4 and a resistance block b5, the extrusion block b1 is in clearance fit with the inner side of the movable bin b2, the lower end of the movable bin b2 is fixedly connected with a resistance block b5 in an embedding manner, the resistance block b5 is in clearance fit with the inner wall of the extrusion block b1, two sides of the movable bin b2 are hinged and connected with the reversing rod b4, the reversing rod b4 is in interference fit with the surface of the air discharge cavity b3, eight reversing rods b4 are arranged, the two reversing rods are in one group and are fixed between the movable bin b2 and the air discharge cavity b3 to be in movable fit with the movable bin, and the air discharge cavity b3 facilitates the discharge of the compressed air of the internal machine to the outside, so that the top end extrusion block b1 can achieve the effect.

The pressing block b1 comprises an air blocking plug c1, an air dispersing groove c2, a block body c3, an elastic block c4 and a blocking pipe c5, the bottom of the air blocking plug c1 is in spiral connection with the top end of the blocking pipe c5, the inner wall of the air dispersing groove c2 is in embedded connection with the elastic block c4, the inner surface of the elastic block c4 is in clamping connection with the blocking pipe c5, the air blocking plug c1 is in nested connection with the inside of the air dispersing groove c2, the block body c3 is in clearance fit with the inner wall of the air dispersing groove c2, the air blocking plug c1 is provided with two blocks which are in an arc strip shape and are in clamping connection with the top end of the air dispersing groove c2, and the lower end of the air dispersing groove c5 is in spiral connection, wherein the air blocking plug c1 is beneficial to blocking the air dispersing groove c2 after being pressed with the inner wall, and air is prevented from entering to affect the adsorption.

The specific working principle is as follows:

the invention pushes the bottom of a sucking disc a21 outwards by an outwards extruded suction block a2 and an internal trigger ring a23 so as to match the hinged connection of a swing rod a24, the suction block a22 extends outwards under the thrust of a thrust rod a22, the suction block b1 is attached to the surface of the groove wall and then is pressed inwards, an air blocking plug c1 on the surface of a block body c3 moves inwards to press a lower end blocking pipe c5 so as to extrude air from an air dispersing groove c2, the air blocking plug c1 blocks the surface of the air dispersing groove c2, the bottom blocking pipe c5 is matched with elastic blocks c4 on two sides to fully block the bottom of the air dispersing groove c2 so as to avoid the subsequent air from entering, the exhausted air is pressed by the lower surface of a pressing block b1 in a movable cabin b2 so as to swing the swing rod b 39 4, the swing rod b 24 is matched with a resistance blocks b5 to extrude the air to the internal outlet of an air releasing cavity b3 and then is reset to the suction block 21 on two sides. Therefore, the extrusion block b1 is matched with the plug tube c5 through the air blocking plug c1 in the process of being attached to the ramparts, the internal air is exhausted and then is matched with the elastic block c4 to be in interference fit, subsequent air backflow and entering are avoided, attachment of the extrusion block b1 to the groove ramparts is effectively enhanced, and the internal clamping of the resistor 11 is strengthened.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein; any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a piezoresistor is used in electric locomotive protection, its structure includes fixing base (1), protector (2), slip fixture block (3), stopper (4), fixing base (1) and the inside clearance fit of protector (2), protector (2) and stopper (4) lower extreme clearance fit, slip fixture block (3) and stopper (4) left side activity block, slip fixture block (3) upper end and the inside sliding fit of fixing base (1), its characterized in that:

the fixing seat (1) comprises a resistor (11), a static elimination block (12), a fixing groove (13), a conducting wire (14) and an electric current wire (15), the resistor (11) is movably clamped with the inner wall of the fixing groove (13), the lower end of the fixing groove (13) is in clearance fit with the static elimination block (12), the lower end of the resistor (11) is connected with the conducting wire (14) in a welded mode, the electric current wire (15) is fixedly connected with the lower end of the resistor (11), and the conducting wire (14) is in movable fit with the inside of the static elimination block (12).

2. The varistor as claimed in claim 1, wherein: the resistor (11) comprises a pin (111), an encapsulating layer (112), an electrode (113), a product boundary layer (114) and a soldering hole (115), the top end of the pin (111) is connected with the lower end of the encapsulating layer (112) in a nested mode, the encapsulating layer (112) is connected with the electrode (113) in a clamping mode, the lower end of the electrode (113) is in clearance fit with the product boundary layer (114), the soldering hole (115) is connected with the lower end of the encapsulating layer (112) in a welding mode, and the soldering hole (115) is in clearance fit with the inner side of the pin (111).

3. The varistor as claimed in claim 2, wherein: the pin (111) comprises a pressing rod (a1), an adsorption block (a2), a tension spring (a3), a displacement block (a4) and a lead rod (a5), wherein the pressing rod (a1) is movably matched with the center of the adsorption block (a2), the lower end of the tension spring (a3) is connected with the displacement block (a4) in a welded mode, the displacement block (a4) is matched with the lead rod (a5) in an integral nested mode, the top end of the tension spring (a3) is connected with the adsorption block (a2) in a welded mode, and the upper end of the displacement block (a4) is in clearance fit with the adsorption block (a 2).

4. The varistor as claimed in claim 3, wherein: adsorb piece (a2) including sucking disc (a21), thrust lever (a22), trigger ring (a23), pendulum rod (a24), sucking disc (a21) and trigger ring (a23) whole movable fit, sucking disc (a21) both sides and pendulum rod (a24) welded connection, pendulum rod (a24) central point puts and is connected with thrust lever (a22) block, thrust lever (a22) whole and trigger ring (a23) clearance fit.

5. The varistor as claimed in claim 4, wherein said varistor further comprises: the sucking disc (a21) is including extrusion piece (b1), activity storehouse (b2), gassing chamber (b3), switching-over pole (b4), resistance piece (b5), extrusion piece (b1) and the inboard clearance fit in activity storehouse (b2), activity storehouse (b2) lower extreme is inlayed with resistance piece (b5) and is connected firmly, resistance piece (b5) and extrusion piece (b1) inner wall clearance fit, activity storehouse (b2) both sides are connected with switching-over pole (b4) are articulated, switching-over pole (b4) and gassing chamber (b3) surface interference fit.

6. The varistor as claimed in claim 5, wherein: the extrusion block (b1) comprises an air blocking plug (c1), an air dispersing groove (c2), a block body (c3), an elastic block (c4) and a plug pipe (c5), wherein the bottom of the air blocking plug (c1) is spirally connected with the top end of the plug pipe (c5), the inner wall of the air dispersing groove (c2) is fixedly connected with the elastic block (c4) in an embedding manner, the inner surface of the elastic block (c4) is connected with the plug pipe (c5) in a clamping manner, the air blocking plug (c1) is connected with the inner part of the air dispersing groove (c2) in an embedded manner, and the block body (c3) is in clearance fit with the inner wall of the air dispersing groove (c 2).