CN219978512U

CN219978512U - Resistance simulator

Info

Publication number: CN219978512U
Application number: CN202321627319.8U
Authority: CN
Inventors: 范少春; 万杰; 闵丽雅; 张志敏; 周鑫
Original assignee: Wuhan Yongneng Zhixiang Automation System Co ltd
Current assignee: Wuhan Yongneng Zhixiang Automation System Co ltd
Priority date: 2023-06-26
Filing date: 2023-06-26
Publication date: 2023-11-07
Anticipated expiration: 2033-06-26

Abstract

The utility model provides a resistor simulator which comprises a mounting shell, wherein a resistor simulation block is fixed on one side of the inside of the mounting shell, a screw is rotatably arranged on the other side of the inside of the mounting shell through a bearing, a threaded sleeve is connected to the surface of the screw in a meshed mode, the resistor simulation block is slidably connected with a contact sleeve at the position of the threaded sleeve, a connecting plate is arranged between the threaded sleeve and the contact sleeve, dust is reduced from entering the inside while heat dissipation inside the mounting shell is ensured through the effect of a dustproof net, compared with the prior art, a wire between two energizing rings is guided through a wire binding assembly, the wire is bent into an S shape along the vertical direction when the contact sleeve moves, the wire cannot be wound with the resistor simulation block and the screw, the inside resistor simulation block is protected against dust and moisture through the sealing of a shell and a bottom plate, the inside resistor simulation block is convenient to overhaul, and manual accurate reading is convenient through a built-in graduated scale.

Description

Resistance simulator

Technical Field

The utility model relates to the technical field of resistor simulators, in particular to a resistor simulator.

Background

In resistance detection, large-current testers are widely used gradually, such as contact resistance, loop resistance testing equipment and loop resistance testers for measuring equipment such as switches, circuit breakers and transformers; the device for measuring DC resistance of inductive tested objects such as transformer, mutual inductor and motor winding is a DC resistance quick measuring instrument, and the test current of these instruments can be from several amperes to several hundred amperes. The calibration of such instruments cannot be realized by using a traditional standard resistor, because the current which can pass through the standard resistor of a real object is only 30A at maximum, and the accuracy of the detection of the current which is larger than 30A is greatly reduced due to the influence of power, thermal stability and the like. Under the condition, the analog resistor has the characteristics of small volume, large rated current, higher accuracy than the physical resistor, convenient use, flexible operation and the like.

Patent CN217007434U proposes a high accuracy direct current analog resistor generator for it drives adjusting screw rotatory through rotatory rotation handle, and the effect of slider and moment of torsion is down driven effectively and is touched cover and connecting rod and remove, thereby makes the resistance analog block length in the contact electric current obtain the adjustment, cooperates the effectual accuracy of scale on the roof to obtain adjusting distance, thereby obtains accurate testing result according to this distance cooperation instrument's detection data.

According to the technical scheme disclosed in the patent document, the contact position of the contact cover and the resistance simulation block is regulated through the screw, so that different resistances and current values are measured, the accurate change of the simulation resistance value is realized, and the scheme has the following problems: the resistance simulation block can not be stained with dust and wet on the surface when using, and the dust absorbs moisture and once PN junction resistance drops to the threshold value, just probably makes the malfunction that has produced the disconnection of some circuits, can produce the possibility of circuit breaking to the wire that connects through first coupling assembling and second coupling assembling, when moving along with the contact block, the wire can crooked, under the condition of lacking limiting measure, the wire is contacted with the resistance simulation block easily, interferes electromagnetic induction, perhaps twines the problem that leads to the wire fracture with the screw rod.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide a resistor simulator which solves the problems in the prior art, has novel structure, guides a wire between two electrified rings through a wire harness assembly, bends the wire into an S shape along the vertical direction when a contact sleeve moves, further can not be wound with a resistor simulation block and a screw rod, protects the resistor simulation block inside from dust and moisture through blocking of a shell and a bottom plate, is convenient to overhaul, and is convenient to read manually and accurately through a built-in graduated scale.

In order to achieve the above object, the present utility model is realized by the following technical scheme: the utility model provides a resistance simulator, includes the installation shell, the inside one side of installation shell is fixed with resistance simulation piece, and the inside opposite side of installation shell is rotated through the bearing and is installed the screw rod, the meshing is connected with the swivel nut on the screw rod surface, and resistance simulation piece has the contact sleeve to the position sliding connection of swivel nut, be equipped with the connecting plate between swivel nut and the contact sleeve, and the inside harness subassembly that is equipped with the installation power-on line to connecting plate center department and prevents the power-on line skew about, the heat dissipation window has been seted up to installation shell top both sides.

Furthermore, anti-collision sleeves are sleeved at two ends of the installation shell, a motor is fixed inside the anti-collision sleeves at one end of the installation shell, and the output end of the motor is fixedly connected with the screw rod.

Furthermore, the wire harness assembly comprises an energizing ring, the center of the connecting plate and the inner wall of the other side of the installation shell are fixed with the energizing ring, the bottoms of the energizing rings are in meshed connection with extrusion screws, and wires are fixed inside the two energizing rings through the extrusion screws.

Further, the installation shell is fixed with the spout on the top inner wall of corresponding wire, and the inside equidistance sliding connection of spout has the slider, the wire equidistance is fixed with first telescopic link on the surface, and is adjacent be fixed with the second telescopic link between the first telescopic link, and second telescopic link and wire fixed connection, first telescopic link and second telescopic link top are all fixed on the slider.

Further, the bottom of the installation shell is fixed with a bottom plate through screws, and a drying sheet is paved on the inner wall of the bottom plate.

Further, a dust screen is fixed on the outer surface of the radiating window at the top of the installation shell.

Further, the installation shell is close to the heat dissipation window outside of screw rod one side and sets up the groove, and the installation shell is located the inslot that the heat dissipation window outside is fixed with the scale, the swivel nut top is fixed with the pointer, and pointer and scale sliding contact, the installation shell corresponds the external surface fixed with transparent frame in scale mounting groove.

The utility model has the beneficial effects that: the utility model relates to a resistance simulator, which comprises a mounting shell; a dust screen; a transparent frame; a resistance simulation block; a graduated scale; a heat radiation window; an anti-collision sleeve; a screw; a motor; a screw sleeve; a pointer; a connecting plate; a contact sleeve; a harness assembly; a chute; a slide block; a first telescopic rod; a second telescopic rod; a wire; extruding a screw; an energizing ring; a bottom plate; drying the sheet;

1. under the effect of this resistance simulator through the dust screen, when guaranteeing the inside heat dissipation of installation shell, reduce the dust and enter into inside.

2. This resistance simulator is sealed through transparent frame, avoids the entering of dust, also makes things convenient for the reading simultaneously, through the removal of swivel nut along the screw rod, and the pointer translates on the scale, makes things convenient for the people to read.

3. This resistance simulator is through detachable bottom plate, and the convenience is to the maintenance of installation shell inner structure, reduces the inside moisture of installation shell through the dry piece, reduces the influence to the resistance simulation piece.

4. The resistor simulator is arranged at intervals through the first telescopic rod and the second telescopic rod on the lead, and the initial states of the first telescopic rod and the second telescopic rod can only be prolonged and shortened, so that the lead can be bent into an S shape without left and right deflection.

5. The resistor simulator protects the two sides of the installation shell through the anti-collision sleeve.

6. This resistance simulator is for prior art, leads through the wire binding subassembly to the wire between two circular telegram rings, when the contact sleeve removes, the wire can follow vertical direction crooked into the S type, and then can not take place winding problem with resistance simulation piece and screw rod, through the locking of shell and bottom plate, carries out dustproof damp-proofing protection to the resistance simulation piece of inside, and conveniently overhauls, through built-in scale, makes things convenient for artificial accurate reading.

Drawings

FIG. 1 is a schematic diagram of an overall structure of a resistor simulator according to the present utility model;

FIG. 2 is a cross-sectional view of a resistor simulator of the present utility model;

FIG. 3 is a schematic view showing the internal structure of a mounting case of a resistor simulator according to the present utility model;

FIG. 4 is a schematic diagram of the top structure of a mounting case of a resistor simulator according to the present utility model;

FIG. 5 is a schematic diagram of a wire harness assembly of a resistor simulator according to the present utility model;

in the figure: 1. a mounting shell; 11. a dust screen; 12. a transparent frame; 13. a resistance simulation block; 14. a graduated scale; 15. a heat radiation window; 2. an anti-collision sleeve; 3. a screw; 31. a motor; 32. a screw sleeve; 321. a pointer; 33. a connecting plate; 34. a contact sleeve; 4. a harness assembly; 41. a chute; 42. a slide block; 43. a first telescopic rod; 44. a second telescopic rod; 45. a wire; 46. extruding a screw; 47. an energizing ring; 5. a bottom plate; 51. and (5) drying the tablets.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

Referring to fig. 1 to 5, the present utility model provides a technical solution: the utility model provides a resistance simulator, includes installation shell 1, the inside one side of installation shell 1 is fixed with resistance simulation piece 13, and installs screw rod 3 through the bearing rotation in the inside opposite side of installation shell 1, the meshing is connected with swivel nut 32 on the screw rod 3 surface, and resistance simulation piece 13 has contact sleeve 34 to the position sliding connection of swivel nut 32, be equipped with connecting plate 33 between swivel nut 32 and the contact sleeve 34, and the inside tie wire subassembly 4 to connecting plate 33 center department of installation shell 1 top is equipped with the installation live wire and prevents the live wire skew about, heat dissipation window 15 has been seted up to the both sides at installation shell 1 top, in the scheme, the operational mode of resistance simulation piece 13 and the connection between wire 45 all are the same with CN217007434U and the resistance generator theory that can change the resistance value among the prior art, through screw rod 3 rotation and swivel nut 32 meshing, swivel nut 32 drives contact sleeve 34 along resistance simulation piece 13 surface on the time, improves the precision of resistance test through the accurate displacement of screw rod 3.

In this embodiment, the anti-collision sleeve 2 has been cup jointed at installation shell 1 both ends, and the inside motor 31 that is fixed with of anti-collision sleeve 2 of installation shell 1 one end, motor 31 output and screw rod 3 fixed connection protect the both sides of installation shell 1 through anti-collision sleeve 2, open motor 31 and drive screw rod 3 and rotate, realize device automatically regulated resistance value.

In this embodiment, the wire harness assembly 4 includes an energizing ring 47, the center of the connecting plate 33 and the inner wall of the other side of the installation shell 1 are fixed with the energizing ring 47, the bottoms of the energizing rings 47 are engaged and connected with extrusion screws 46, two wires 45 are fixed inside the energizing rings 47 through the extrusion screws 46, the installation shell 1 is fixed with a sliding groove 41 on the inner wall of the top of the corresponding wire 45, the sliding groove 41 is connected with a sliding block 42 in an equidistant manner, a first telescopic rod 43 is fixed on the surface of the wire 45 in an equidistant manner, a second telescopic rod 44 is fixed between adjacent first telescopic rods 43, the second telescopic rod 44 is fixedly connected with the wire 45, the tops of the first telescopic rod 43 and the second telescopic rod 44 are fixed on the sliding block 42, the wire 45 is fixed through the two energizing rings 47 and the extrusion screws 46, the sliding block 42 is pushed to slide along the sliding groove 41 when the connecting plate 33 moves, and the first telescopic rod 43 and the second telescopic rod 44 on the wire 45 can only stretch and shorten in an initial state, so that the wire 45 can not bend to a left or right shape.

In this embodiment, the bottom of the installation shell 1 is fixed with the bottom plate 5 through the screw, and the drying sheet 51 is laid on the inner wall of the bottom plate 5, so that the maintenance of the internal structure of the installation shell 1 is facilitated through the detachable bottom plate 5, the moisture in the installation shell 1 is reduced through the drying sheet 51, and the influence on the resistance simulation block 13 is reduced.

In this embodiment, the dust screen 11 is fixed on the outer surface of the heat dissipation window 15 at the top of the installation shell 1, and dust is reduced from entering the installation shell 1 while heat dissipation is ensured through the action of the dust screen 11.

In this embodiment, the heat dissipation window 15 outside that installation shell 1 is close to screw rod 3 one side is seted up the groove, and the installation shell 1 is located the inslot that the heat dissipation window 15 outside is fixed with scale 14, swivel nut 32 top is fixed with pointer 321, and pointer 321 and scale 14 sliding contact, the surface that installation shell 1 corresponds scale 14 mounting groove is fixed with transparent frame 12, and the scale 14 embeds in the inslot of heat dissipation window 15 one side, seals through transparent frame 12, avoids the entering of dust, also makes things convenient for the reading simultaneously, through the removal of swivel nut 32 along screw rod 3, pointer 321 translates on along scale 14, makes things convenient for the manual reading.

When the resistance simulation device is used, the screw rod 3 rotates to be meshed with the screw sleeve 32, the screw sleeve 32 drives the contact sleeve 34 to slide on the surface of the resistance simulation block 13 to change the resistance value, the sliding block 42 is pushed to slide along the sliding groove 41 when the connecting plate 33 moves, and as the first telescopic rod 43 and the second telescopic rod 44 on the lead wire 45 are arranged at intervals and the initial state of the first telescopic rod 43 and the second telescopic rod 44 can only be prolonged and shortened, the lead wire 45 can be bent into an S shape and cannot deviate left and right, the pointer 321 translates on the graduated scale 14, manual reading is facilitated, and the precision of resistance test is improved by accurate displacement of the lead screw rod 3.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model 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.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. A resistor simulator comprising a mounting case (1), characterized in that: the novel electric wire harness device is characterized in that a resistance simulation block (13) is fixed on one side of the inside of the installation shell (1), a screw (3) is installed on the other side of the inside of the installation shell (1) through bearing rotation, a screw sleeve (32) is connected to the screw (3) in a meshed mode on the surface, a contact sleeve (34) is connected to the position of the screw sleeve (32) in a sliding mode of the resistance simulation block (13), a connecting plate (33) is arranged between the screw sleeve (32) and the contact sleeve (34), a harness assembly (4) for installing a power-on wire and preventing the power-on wire from shifting left and right is arranged in the center of the top of the installation shell (1), and radiating windows (15) are formed in two sides of the top of the installation shell (1).

2. A resistor simulator according to claim 1, wherein: the anti-collision device is characterized in that anti-collision sleeves (2) are sleeved at two ends of the installation shell (1), a motor (31) is fixed inside the anti-collision sleeves (2) at one end of the installation shell (1), and the output end of the motor (31) is fixedly connected with the screw rod (3).

3. A resistor simulator according to claim 1, wherein: the wire harness assembly (4) comprises an energizing ring (47), the energizing ring (47) is fixed on the center of the connecting plate (33) and the inner wall of the other side of the installation shell (1), extrusion screws (46) are inserted into the bottoms of the energizing ring (47) in a meshed mode, and wires (45) are fixed inside the two energizing rings (47) through the extrusion screws (46).

4. A resistor simulator according to claim 3, wherein: the installation shell (1) is fixed with spout (41) on the top inner wall that corresponds wire (45), and inside equidistance sliding connection of spout (41) has slider (42), wire (45) equidistance is fixed with first telescopic link (43) on the surface, and is adjacent be fixed with second telescopic link (44) between first telescopic link (43), and second telescopic link (44) and wire (45) fixed connection, first telescopic link (43) and second telescopic link (44) top are all fixed on slider (42).

5. A resistor simulator according to claim 1, wherein: the bottom of the installation shell (1) is fixed with a bottom plate (5) through screws, and a drying sheet (51) is paved on the inner wall of the bottom plate (5).

6. A resistor simulator according to claim 1, wherein: a dustproof net (11) is fixed on the outer surface of a radiating window (15) at the top of the installation shell (1).

7. A resistor simulator according to claim 6, wherein: the utility model discloses a transparent frame, including installation shell (1), scale (14) are fixed in the groove outside of installing shell (1) heat dissipation window (15) that is close to screw rod (3) one side, and the inside of groove that installation shell (1) is located the heat dissipation window (15) outside is fixed with scale (14), swivel nut (32) top is fixed with pointer (321), and pointer (321) and scale (14) sliding contact, the surface that installation shell (1) corresponds scale (14) mounting groove is fixed with transparent frame (12).