CN209911114U - Young modulus detection device of cable - Google Patents

Abstract

The utility model discloses a Young modulus detection device of cable, which comprises a frame, tension sensor and stretching mechanism, stretching mechanism is including actuating mechanism and hold-down mechanism, hold-down mechanism is including first hold-down mechanism and second hold-down mechanism, first hold-down mechanism sets up on actuating mechanism, second hold-down mechanism sets up on tension sensor, first hold-down mechanism and second hold-down mechanism include the spout on the both sides limit of framework and framework respectively, top-down is provided with two compact lumps in the framework, install in the spout through the slider matching respectively at the both ends of compact lump, be provided with the elastic component between two compact lumps so that two compact lumps separate each other when stewing, be equipped with the electro-magnet on two compact lumps respectively, attract each other when the electro-magnet circular telegram, so that two compact lumps are close to each other. The utility model discloses can improve the degree of automation that compresses tightly of cable greatly to improve work efficiency, reduce intensity of labour, ensure cable elastic modulus's measurement accuracy.

Description

Young modulus detection device of cable

Technical Field

The utility model relates to a cable test equipment technical field especially relates to a Young modulus detection device of cable.

Background

With the rapid development of the automobile industry and the power electronic technology in the current information and intelligent era, functional modules of various electromechanical devices are continuously increased, the internal structural layout of the devices is gradually complicated, particularly, cables inside the devices tend to be numerous and complicated, and with the continuous development of the cable industry, the performance requirements on the cables are higher and higher, and the performance test of the cables is a key link.

In current cable elastic modulus parameter detection device, the mode of using always is through adding the mode of weight and stretching the cable, and every weight quality is fixed, and the cable atress that awaits measuring is interrupted, and the range of change is great when adding the weight, leads to data can not continuous measurement, can not accurately measure the young modulus of the cable that awaits measuring. And the lower extreme of the cable that waits to detect can take place to rock at the in-process that adds the weight, can lead to detection device because the atress changes, and the data that can lead to observing takes place some slight changes to influence the accuracy of data for a long time. The pressing and clamping device of the cable needs manual operation to press the cable in the detection process, the efficiency is low, the cables of the same type do not have uniform and quantized pressing force, the cable is possibly damaged due to overlarge pressing force, and a wire harness is loosened in the process of testing when the pressing force is too small, so that the accuracy of various performance test results of the cable is influenced.

In conclusion, how to reduce the external human interference factors and quickly and accurately measure the tensile modulus parameters of the cables is the problem to be solved by the current letter.

SUMMERY OF THE UTILITY MODEL

Not enough more than to, compress tightly inefficiency, degree of automation is low, the not controllable scheduling problem of packing force size for solving the manual work, the utility model provides a Young modulus detection device of cable.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a Young modulus detection device of a cable comprises a rack, a tension sensor and a stretching mechanism, wherein the tension sensor and the stretching mechanism are arranged on the rack, the stretching mechanism comprises a driving mechanism and a pressing mechanism, the pressing mechanism comprises a first pressing mechanism and a second pressing mechanism, the first pressing mechanism is arranged on the driving mechanism and driven by the driving mechanism to move, the second pressing mechanism is arranged on the tension sensor, the first pressing mechanism and the second pressing mechanism respectively comprise a frame body and sliding grooves which are oppositely arranged on two side edges of the frame body, two pressing blocks are arranged on the frame body from top to bottom, two ends of each pressing block are respectively installed in the sliding grooves in a matching mode through sliding blocks, an elastic piece is arranged between the two pressing blocks so that the two pressing blocks can be separated from each other when standing, and electromagnets are respectively arranged on the two pressing blocks, when the electromagnet is electrified, the electromagnet attracts each other, so that the two pressing blocks are close to each other.

Furthermore, the frame includes the top board and sets up the support column of top board bottom surface, stretching mechanism sets up on the bottom surface of top board.

Further, the stretching mechanism is an air cylinder or a hydraulic cylinder or a lead screw mechanism.

Furthermore, the stretching mechanism is a screw rod mechanism and comprises a linear motor and a screw rod driven by the linear motor to rotate, a threaded hole matched with the external thread of the screw rod is further formed in the top of the frame body in the first pressing mechanism, and the screw rod penetrates through the threaded hole; the bottom surface of the upper pressing plate is further provided with a groove, the extending direction of the groove is parallel to the lead screw, and the top of the frame body in the first pressing mechanism is further provided with a convex block matched with the groove.

Furthermore, a round rod parallel to the lead screw is arranged below the upper pressure plate, a through hole is further formed in the bottom of the frame body of the first pressing mechanism, and the round rod penetrates through the through hole.

Furthermore, a grating ruler is arranged on the side surface of the upper pressure plate.

Further, the transverse section of the sliding groove is in a dovetail shape.

Furthermore, a wire harness fixing clamp is arranged on the frame body.

Furthermore, the pressing surface of the pressing block is provided with rectangular teeth.

Furthermore, the first pressing mechanism and the second pressing mechanism respectively comprise adjustable clamping pieces for clamping the two pressing blocks, and each adjustable clamping piece comprises a connecting rod and a clamping plate movably arranged on the connecting rod.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model can greatly improve the automation degree of the compaction of the cable, thereby improving the working efficiency, reducing the labor intensity, and accurately controlling the compaction force, thereby realizing that the corresponding and reasonable compaction force is applied according to different cables or cables with the same specification, and ensuring the measurement precision of the elastic modulus of the cable;

2. the utility model discloses can realize the continuous tensile continuous measurement in order to realize cable elastic modulus of cable, the atress of the cable that has solved artifical measurement reading error that adds the sign indicating number mode big, await measuring has discontinuity scheduling problem, has improved cable elastic modulus's measurement accuracy, has improved measuring efficiency and degree of automation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

FIG. 2 is a schematic structural view of the upper platen;

FIG. 3 is a schematic structural view of a linear motor and a motor fixing bracket;

FIG. 4 is a schematic structural view of a tension sensor, a first tension sensor bracket and a second tension sensor bracket;

FIG. 5 is a schematic structural diagram of a first pressing mechanism;

FIG. 6 is a schematic structural view of a first corbel;

FIG. 7 is a schematic structural view of a first upper compact;

FIG. 8 is a schematic structural view of a second pressing mechanism;

FIG. 9 is a schematic structural view of a second upper compact;

fig. 10 is a schematic structural view of the third corbel.

1 wherein, the marks shown in the figure are: 1: an upper pressure plate; 2: a motor fixing bracket; 3: a grating scale; 4: a linear motor; 5: a first bearing; 6: a first support beam; 7: a lead screw; 8: a first upper compact block; 9: a first cross member; 10: a first harness securing clip; 11: a third cross member; 12: a first tension sensor bracket; 13: a tension sensor; 14: a second bearing; 15: a support pillar; 16: a second tension sensor bracket; 17: a second harness fixing clamp; 18: a second chute; 19: a third corbel; 20: a fourth cross member; 21: a second upper compact block; 22: a second lower compression block; 23: a fourth corbel; 24: a second cross member; 25: a second corbel; 26: a first lower compact; 27: a round bar; 28: a second slider; 29: a rubber pad; 30: a through hole; 31: a second return spring; 32: a bump; 33: a threaded hole; 34: a second return spring catch; 35: a first connecting rod; 36: a first nut; 37: a second clamping plate; 38: a first upper electromagnet; 39: a first return spring; 40: a first lower electromagnet; 41: a first slider; 42: a second upper electromagnet; 43: a first return spring catch; 44: a first rectangular tooth; 45: a first chute; 46: a groove; 47: a second lower electromagnet; 49: a second rectangular tooth; 50: a first clamping plate; 51: a third clamping plate; 52: a second connecting rod; 53: a second nut.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "inside" and the like are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are conventionally placed when used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, a preferred embodiment of the present invention provides a young's modulus detection device for a cable, comprising a frame, a tension sensor 13 and a stretching mechanism, the tension sensor 13 and the stretching mechanism being disposed on the frame, the stretching mechanism comprising a driving mechanism and a pressing mechanism, the pressing mechanism comprising a first pressing mechanism and a second pressing mechanism, the first pressing mechanism being disposed on the driving mechanism and being driven by the driving mechanism to move, the second pressing mechanism being fixedly disposed on the tension sensor 13, the first pressing mechanism and the second pressing mechanism respectively comprising a frame body and two opposite sliding slots on two sides of the frame body, two pressing blocks being disposed on the frame body from top to bottom, two ends of the pressing blocks being respectively installed in the sliding slots through a sliding block, an elastic member being disposed between the two pressing blocks to separate the two pressing blocks when the pressing blocks are in a standing state, two pressing blocks being respectively provided with an electromagnet, when the electromagnet is electrified, the electromagnet attracts each other, so that the two pressing blocks are close to each other.

When the electromagnet is not electrified, the electromagnets and the pressing blocks in the first pressing mechanism and the second pressing mechanism are in a relative static state, a gap is reserved between the two pressing blocks in the first pressing mechanism or the second pressing mechanism under the action of the elastic part, the gap is used for placing a cable to be pressed, when the electromagnet is electrified, the electromagnet generates magnetic mutual adsorption (preset that the two pressing blocks are mutually attracted with opposite polarities), the two pressing blocks are driven to mutually approach, the elastic part is compressed, the two pressing blocks mutually approach and realize pressing, the acting force (the magnitude of current is positively correlated with the magnitude of magnetic force of the electromagnet) mutually adsorbed by the two electromagnets in the first pressing mechanism or the second pressing mechanism can be changed by changing the current input into the electromagnet, namely, the magnitude of the pressing force can be changed by changing the magnitude of the current input into the electromagnet, so as to realize the control of the pressing force, in the automatic pressing process, the pressing force can also be precisely controlled. When need not to compress tightly the back, only need the outage can, the electro-magnet adsorption of each other disappears after the outage, and the elastic component resets and makes the compact heap separately, and the compact heap also disappears thereupon. The utility model discloses in, different packing forces obtain through the current value of difference, and when using, the big or small relation of different current values and packing force can be measured in advance, markd, but direct reference, reference when the later stage uses. The current input is changed in the prior art, an upper computer is often used, and the current input with different values and accurate and controllable can be realized through the upper computer and matched equipment thereof, so that the principle and the mode of the current input are not explained in detail. In some small application scenarios, the resistance box or the sliding rheostat is also often used to realize the input of different current values, and the utility model discloses also can utilize the above-mentioned mode to realize the input of different current values to obtain different packing forces.

When the cable pressing mechanism is implemented, cables to be pressed are respectively placed on pressing surfaces on the opposite sides of two pressing blocks in a first pressing mechanism and a second pressing mechanism, currents with corresponding numerical values are introduced to the electromagnets according to required pressing forces, the pressing blocks are mutually close to each other and are pressed (one group of two pressing blocks) under the action of the electromagnets, and accordingly the cables are pressed under certain pressing forces.

In the existing pressing mode, the bolts, the gaskets and the cylinders cannot be directly pressed under a specific pressing force, and the pressing can be realized only by the aid of a pressure sensor. Since the cable is deformed when being compressed, the compression force of the conventional compression method is changed after the deformation and just after the compression. And the utility model discloses in, the packing force obtains through two electro-magnets of inter attraction, under the unchangeable condition of electric current, the effort of interaction of two electro-magnets is unchangeable, therefore the packing force is unchangeable, promptly the utility model discloses can obtain lasting, long-time, the unchangeable compressing tightly of stable packing force. The utility model discloses can improve the degree of automation that compresses tightly of cable greatly to improve work efficiency, reduce intensity of labour, and can the accurate control packing force, thereby realize giving corresponding, reasonable packing force according to different cables or the same specification cable, ensure cable elastic modulus's measurement accuracy.

Referring to fig. 1, the frame includes an upper platen 1 and a supporting pillar 15 disposed on a bottom surface of the upper platen 1, and the stretching mechanism is disposed on the bottom surface of the upper platen 1. In the preferred embodiment, the number of the supporting columns 15 is four, the supporting columns are vertically arranged, and every two supporting columns are parallel to form a square structure. The bottom of support column 15 is provided with rubber pad 29, guarantees the steady of frame and places. Tension sensor 13 is fixed to be set up in the frame, specifically is fixed to be set up on two spinal branch daggers 15 through second tension sensor support 16, and second hold-down mechanism passes through first tension sensor support 12 and is fixed to be set up on tension sensor 13, and when drawing the cable, second hold-down mechanism can receive corresponding pulling force, and corresponding tension sensor 13 also can receive corresponding pulling force, and tension sensor 13 can detect this pulling force.

In order to realize continuous stretching, the stretching mechanism is an air cylinder, a hydraulic cylinder or a screw rod mechanism, and the air cylinder, the hydraulic cylinder or the screw rod mechanism can realize continuous linear motion so as to drive the first pressing mechanism to realize continuous linear motion. In the preferred embodiment, the stretching mechanism is a screw mechanism, please refer to fig. 1, fig. 2, fig. 3 and fig. 5, specifically, the stretching mechanism includes a linear motor 4 and a screw 7 driven by the linear motor 4 to rotate, the linear motor 4 is fixed on the bottom surface of the upper platen 1 through a motor fixing bracket 2, one end of the screw 7 close to the linear motor 4 is mounted on the bottom surface of the upper platen 1 through a first bearing 5, and one end of the screw 7 far from the linear motor 4 is mounted on the bottom surface of the upper platen 1 through a second bearing 14. The top of the frame body in the first pressing mechanism is also provided with a threaded hole 33 matched with the external thread of the lead screw 7, and the lead screw 7 penetrates through the threaded hole 33. The bottom surface of the upper press plate 1 is further provided with two grooves 46, the extending direction of each groove 46 is parallel to the screw rod 7, the top of the frame body in the first pressing mechanism is further provided with two lugs 32 matched with the grooves 46, and the number of the corresponding lugs 32 is also two.

During implementation, the linear motor 4 is started and drives the lead screw 7 to rotate, under the rotation of the lead screw 7, under the action of the groove 46 and the bump 32, the first pressing mechanism in threaded fit with the lead screw 7 can do linear motion along the axial direction of the lead screw 7 along with the rotation of the lead screw 7, the second pressing mechanism is fixedly arranged on the tension sensor 13, when the lead screw 7 rotates and drives the first pressing mechanism to do direction motion away from the second pressing mechanism, the cable pressed between the first pressing mechanism and the second pressing mechanism can be stretched, at the moment, the stretching of the cable is continuous and continuous stretching, at the moment, a continuous and continuous pulling force is correspondingly generated, and the pulling force is detected by the tension sensor 13.

In a preferred embodiment, referring to fig. 1 and 5, a round rod 27 parallel to the screw 7 is disposed below the upper press plate, a through hole 30 is further disposed at the bottom of the frame in the first pressing mechanism, and the round rod 27 passes through the through hole 30. The two round rods 27 are fixedly arranged on the supporting column 15, and the corresponding through holes 30 are also two. By arranging the round rod 27 and the through hole 30, the deflection of the first pressing mechanism can be better limited, and a certain supporting function is also realized, so that the linear motion of the first pressing mechanism is conveniently realized.

Referring to fig. 1, a grating scale 3 is disposed on a side surface of an upper platen 1. The grating ruler 3 is used for detecting the position of the first pressing mechanism so as to calculate the stretching length of the cable.

Referring to fig. 1, 5, 6 and 7, in the preferred embodiment, the first pressing mechanism specifically includes a first beam 9 and a second beam 24 parallel to each other and a first beam 6 and a second beam 25 parallel to each other, the first beam 6 and the second beam 25 have the same structure, the first beam 9 and the second beam 24 are horizontally disposed, the first beam 6 and the second beam 25 are perpendicular to the first beam 9 and the second beam 24, and are respectively connected to two ends of the first beam 9 and the second beam 24 to form a square frame; the opposite sides of the first supporting beam 6 and the second supporting beam 25 are respectively provided with a first sliding chute 45; the first cross beam 9 and the second cross beam 24 are detachably and fixedly connected with the first supporting beam 6 and the second supporting beam 25, and the detachable and fixed connection preferably adopts bolts and screw holes. The square frame is convenient to disassemble and assemble. The threaded holes 33 are provided on the first beam 9, the projections 32 are provided on the top end of the first beam 9, and the through holes 30 are provided on the second beam 24. A first upper pressing block 8 and a first lower pressing block 26 are arranged on the square frame body from top to bottom, the first upper pressing block 8 and the first lower pressing block 26 are identical in structure, two ends of the first upper pressing block 8 and the first lower pressing block 26 are respectively installed in first sliding grooves 45 on two sides of the square frame body in a matching mode through a first sliding block 41, an elastic piece is arranged between the first upper pressing block 8 and the first lower pressing block 26 to enable the first upper pressing block 8 and the first lower pressing block 26 to be separated from each other when the square frame body is in a standing state, the elastic piece of the first pressing mechanism is a first return spring 39, opposite sides of the first upper pressing block 8 and the first lower pressing block 26 are respectively provided with a first return spring clamping groove 43, the end portion of the first return spring 39 is installed in the first return spring clamping groove 43, the first upper pressing block 8 is provided with a first upper electromagnet 38, the first upper electromagnet 38 is arranged on the side face of the first upper pressing block 8, the bottom surface of the first upper electromagnet 38 is not lower than the pressing surface of the first upper pressing block 8, the first lower pressing block 26 is provided with a first lower electromagnet 40, the first lower electromagnet 40 is arranged on the side surface of the first lower pressing block 26, the top surface of the first lower electromagnet 40 is not higher than the pressing surface of the first lower pressing block 26, and the first upper electromagnet 38 and the first lower electromagnet 40 are mutually attracted when being electrified, so that the first upper pressing block 8 and the first lower pressing block 26 are close to each other. When the first upper electromagnet 38 and the first lower electromagnet 40 are not energized, the first upper electromagnet 38, the first lower electromagnet 40, the first upper compression block 8 and the first lower compression block 26 are in a relatively static state, the first return spring 39 is kept in a relatively loose state, a gap is left between the first upper compression block 8 and the first lower compression block 26 for placing a cable to be compressed, when the first upper electromagnet 38 and the first lower electromagnet 40 are energized, the first upper electromagnet 38 and the first lower electromagnet 40 generate magnetic mutual adsorption (preset to be mutually attracted with opposite polarities), the first upper compression block 8 and the first lower compression block 26 are driven to approach each other, the first return spring 39 is compressed, the first upper compression block 8 and the first lower compression block 26 approach each other and compress, and by changing the current, the interaction force of the first upper electromagnet 38 and the first lower electromagnet 40 can be changed (the magnitude of the current is positively correlated with the magnitude of the electromagnet magnetic force), that is, the magnitude of the pressing force can be changed by changing the magnitude of the current input to the first upper electromagnet 38 and the first lower electromagnet 40, so that the control of the pressing force can be realized, and the pressing force can be accurately controlled in the process of automatic pressing. When the pressing is not needed, only the power is cut off, after the power is cut off, the mutual adsorption of the first upper electromagnet 38 and the first lower electromagnet 40 disappears, the first return spring 39 is reset to separate the first upper pressing block 8 from the first lower pressing block 26, and the pressing function of the first upper pressing block 8 and the first lower pressing block 26 disappears. In implementation, a cable to be compressed is placed on the compression surfaces on the opposite sides of the first upper compression block 8 and the first lower compression block 26, currents with corresponding values are applied to the first upper electromagnet 38 and the first lower electromagnet 40 according to required compression force, and the first upper compression block 8 and the first lower compression block 26 are close to each other and compressed under the action of the first upper electromagnet 38 and the first lower electromagnet 40, that is, the cable is compressed under certain compression force. Through the mode, the continuous, long-time and stable pressing force unchanged pressing of the first pressing mechanism can be realized.

Referring to fig. 5 and 6, the first sliding slot 45 is formed in the middle upper portion of the first supporting beam 6 and the second supporting beam 25 and penetrates through the top portions of the first supporting beam 6 and the second supporting beam 25, so that the first upper pressing block 8 and the first lower pressing block 26 can conveniently enter and exit from the top portions of the first supporting beam 6 and the second supporting beam 25. The transverse section of the first sliding groove 45 is in a dovetail shape, the first sliding groove 45 in the dovetail shape is matched with the first sliding block 41, so that the first sliding block 41 can only slide along the longitudinal direction (the vertical direction of the embodiment) of the first sliding groove 45, and cannot slide transversely, and the pressing accuracy is guaranteed. The first lower pressing block 26 is detachably fixed on the first sliding groove 45, and the detachable fixing manner is preferably a bolt and screw connection manner, that is, the first lower pressing block 26 is fixed on the first sliding groove 45 by a bolt connection manner. When the power is on, the first lower pressing block 26 is fixed, and only the first upper pressing block 8 moves, so that errors caused by friction force generated by movement of the pressing blocks and the like can be effectively reduced.

Referring to fig. 1, 5, 6 and 7, a first harness fixing clip 10 is disposed on the frame of the first pressing mechanism. Specifically, the first harness fixing clip 10 is disposed on the second support beam 25, and the first harness fixing clip 10 can fix the harness 3 of the first upper electromagnet 38 and the first lower electromagnet 40, so as to avoid the operation being affected by the disorder of cables. The pressing surface of the pressing block of the first pressing mechanism is provided with a first rectangular tooth 44. Specifically, the first rectangular teeth 44 are respectively arranged on the pressing surfaces of the first upper pressing block 8 and the first lower pressing block 26, so that the cable can be stably pressed.

Referring to fig. 1, 8, 9 and 10, in the preferred embodiment, the second pressing mechanism specifically includes a third beam 11 and a fourth beam 20 that are parallel to each other and a third beam 19 and a fourth beam 23 that are parallel to each other, the third beam 19 and the fourth beam 23 have the same structure, the third beam 11 and the fourth beam 20 are horizontally disposed, and the third beam 19 and the fourth beam 23 are perpendicular to the third beam 11 and the fourth beam 20 and respectively connect two end portions of the third beam 11 and the fourth beam 20 to form a square frame; the opposite sides of the third supporting beam 19 and the fourth supporting beam 23 are respectively provided with a second sliding chute 18; the third supporting beam 19 and the fourth supporting beam 23 are detachably and fixedly connected with the third cross beam 11 and the fourth cross beam 20, and the detachable and fixed connection mode preferably adopts bolts and screw holes. The square frame is convenient to disassemble and assemble. The two support legs of the first tension sensor bracket 12 are respectively fixedly connected to the third support beam 19 and the fourth support beam 23, so as to fix the second pressing mechanism on the tension sensor 13. A second upper pressing block 21 and a second lower pressing block 22 are arranged on a square frame body formed by the third supporting beam 19, the fourth supporting beam 23, the third cross beam 11 and the fourth cross beam 20 from top to bottom, the structures of the second upper pressing block 21 and the second lower pressing block 22 are the same, two ends of the second upper pressing block 21 and two ends of the second lower pressing block 22 are respectively installed in second sliding grooves 18 at two sides of the square frame body through a second sliding block 28 in a matching manner, an elastic piece is arranged between the second upper pressing block 21 and the second lower pressing block 22 so that the second upper pressing block 21 and the second lower pressing block 22 are separated from each other when the square frame body is in standing, the elastic piece of the second pressing mechanism is a second return spring 31, the opposite sides of the second upper pressing block 21 and the second lower pressing block 22 are respectively provided with a second return spring clamping groove 34, the end part of the second return spring 31 is installed in the second return spring clamping groove 34, a second upper electromagnet 42 is arranged on the second upper pressing block 21, the second upper electromagnet 42 is arranged on the side face of the second upper pressing block 21, the bottom face of the second upper electromagnet 42 is not lower than the pressing face of the second upper pressing block 21, the second lower pressing block 22 is provided with a second lower electromagnet 47, the second lower electromagnet 47 is arranged on the side face of the second lower pressing block 22, the top face of the second lower electromagnet 47 is not higher than the pressing face of the second lower pressing block 22, and the second upper electromagnet 42 and the second lower electromagnet 47 attract each other when being electrified, so that the second upper pressing block 21 and the second lower pressing block 22 are close to each other. When the second upper electromagnet 42 and the second lower electromagnet 47 are not energized, the second upper electromagnet 42, the second lower electromagnet 47, the second upper pressing block 21, and the second lower pressing block 22 are in a relatively static state, the second return spring 31 is kept in a relatively loose state, a gap is left between the second upper pressing block 21 and the second lower pressing block 22, the gap is used for placing a cable to be pressed, when the second upper electromagnet 42 and the second lower electromagnet 47 are energized, the second upper electromagnet 42 and the second lower electromagnet 47 generate magnetic mutual adsorption (preset to be opposite-polarity mutual attraction), the second upper pressing block 21 and the second lower pressing block 22 are driven to approach each other, the second return spring 31 is compressed, the second upper pressing block 21 and the second lower pressing block 22 approach each other and realize pressing, by changing the current, the electromagnetic force of the mutual adsorption of the second upper electromagnet 42 and the second lower electromagnet 47 can be changed (the magnitude of the current is positively correlated with the magnitude of the magnetic force), that is, the magnitude of the pressing force can be changed by changing the magnitude of the current input to the second upper electromagnet 42 and the second lower electromagnet 47, so as to control the pressing force, and the pressing force can be accurately controlled in the automatic pressing process. When the pressing is not needed, only the power is cut off, after the power is cut off, the mutual adsorption of the second upper electromagnet 42 and the second lower electromagnet 47 disappears, the second return spring 31 is reset to separate the second upper pressing block 21 from the second lower pressing block 22, and the pressing of the second upper pressing block 21 and the second lower pressing block 22 also disappears. In implementation, the cable to be compressed is placed on the compression surfaces on the opposite sides of the second upper compression block 21 and the second lower compression block 22, currents with corresponding values are applied to the second upper electromagnet 42 and the second lower electromagnet 47 according to the required compression force, and the second upper compression block 21 and the second lower compression block 22 are close to each other and compressed under the action of the second upper electromagnet 42 and the second lower electromagnet 47, that is, the cable is compressed under a certain compression force. Through the mode, the continuous, long-time and stable pressing force unchanged pressing of the second pressing mechanism can be realized.

Referring to fig. 8 and 10, the second sliding groove 18 is formed in the middle upper portion of the third supporting beam 19 and the fourth supporting beam 23 and penetrates through the top portions of the third supporting beam 19 and the fourth supporting beam 23, so that the second upper pressing block 21 and the second lower pressing block 22 can conveniently enter and exit from the top portions of the third supporting beam 19 and the fourth supporting beam 23. The transverse section of the second sliding groove 18 is in a dovetail shape, the second sliding block 28 matched with the dovetail-shaped second sliding groove 18 can enable the second sliding block 28 to only slide along the longitudinal direction (the vertical direction in the embodiment) of the second sliding groove 18, and cannot slide transversely, so that the pressing accuracy is guaranteed. The second lower pressing block 22 is detachably fixed to the second sliding groove 18, and the detachable fixing means is preferably a bolt and screw connection, that is, the second lower pressing block 22 is fixed to the second sliding groove 18 by a bolt connection. When the power is on, the second lower pressing block 22 is fixed, and only the second upper pressing block 21 moves, so that errors caused by friction force generated by movement of the pressing blocks and the like can be effectively reduced.

Referring to fig. 1 and 8, a second wire harness fixing clip 17 is disposed on the frame of the second pressing mechanism. The second wire harness fixing clip 17 can fix the cables of the second upper electromagnet 42 and the second lower electromagnet 47, and operation is prevented from being affected by disorder of the cables. And a second rectangular tooth 49 is arranged on the pressing surface of the pressing block of the second pressing mechanism. Specifically, the pressing surfaces of the second upper pressing block 21 and the second lower pressing block 22 are respectively provided with a second rectangular tooth 49, so that the cable can be stably pressed conveniently.

Referring to fig. 1, 5 and 8, the first pressing mechanism and the second pressing mechanism further include adjustable clamping members, respectively, and each adjustable clamping member includes a connecting rod and a clamping plate movably disposed on the connecting rod. The adjustable clamping part can be movably and detachably arranged, and also can be fixedly arranged on the pressing device, and is selected and arranged according to specific conditions.

Specifically, in the preferred embodiment, referring to fig. 5, the adjustable clamping member of the first pressing mechanism includes a first clamping plate 50, a second clamping plate 37 and a first connecting rod 35. The first clamping plate 50 is fixedly arranged on the bottom surface of the first lower pressing block 26, the first connecting rods 35 are vertically and fixedly arranged on the first clamping plate 50, the upper parts of the first connecting rods 35 are threaded rods, the number of the first connecting rods 35 is two, each first connecting rod 35 sequentially penetrates through a hole formed in the first lower pressing block 26, a hole formed in the first reset spring 39 and a hole formed in the first upper pressing block 8 from bottom to top and is not contacted with the inner side walls of the holes formed in the first reset spring 39 and the first upper pressing block 8, the second clamping plate 37 is movably arranged and is placed on the top surface of the first upper pressing block 8, a hole through which the first connecting rod 35 penetrates is formed in the second clamping plate 37, a first nut 36 matched with the external thread of the first connecting rod 35 is arranged at the end part of the first connecting rod 35, the second clamping plate 37 can be pressed by adjusting the position of the first nut 36, so that the distance between the first clamping plate 50 and the second clamping plate 37 is fixed, finally, the clamping of the first upper holding-down piece 8 and the first lower holding-down piece 26 is achieved. Specifically, after the cable is electrified and compressed for a period of time, the compressed cable deforms substantially stably, at this time, the distance between the first upper compression block 8 and the first lower compression block 26 is substantially unchanged, the first clamping plate 50 is fixed on the bottom surface of the first lower compression block 26 by using an adjustable clamping piece, then the first nut 36 is attached to the second clamping plate 37 by screwing the first nut 36, at this time, the power supply of the first upper electromagnet 38 and the first lower electromagnet 40 is cut off, the interaction force between the first upper electromagnet 38 and the first lower electromagnet 40 disappears, although the second clamping plate 37 tends to be upward under the resetting action of the first return spring 39, under the action of the first nut 36, the second clamping plate 37 is still, that is, the fixed distance between the first clamping plate 50 and the second clamping plate 37 is unchanged, at this time, the compression action of the first upper compression block 8 and the first lower compression block 26 on the cable is unchanged, the original pressing force is still kept to be pressed, namely under the power-off action, continuous pressing force unchanged pressing can be still realized, electric energy can be saved, and the device has the advantage of low energy consumption.

Specifically, in the preferred embodiment, referring to fig. 8, the adjustable clamping member of the second pressing mechanism includes a third clamping plate 51 and a second connecting rod 52. The second connecting rods 52 are vertically arranged at the top of the second lower pressing block 22, the upper parts of the second connecting rods 52 are threaded rods, the number of the second connecting rods 52 is two, each second connecting rod 52 sequentially passes through the second return spring 31 of the second lower pressing block 22 and the hole formed in the second upper pressing block 21 from bottom to top, and does not contact with the second return spring 31 and the inner side wall of the hole opened by the second upper pressing block 21, the third clamping plate 51 is movably arranged and placed on the top surface of the second upper pressing block 21, the third clamping plate 51 is provided with a hole for the second connecting rod 52 to pass through, the end part of the second connecting rod 52 is provided with a second nut 53 matched with the external thread of the second connecting rod 52, by adjusting the position of the second nut 53, the third clamping plate 51 can be pressed tightly, so that the distance between the third clamping plate 51 and the second lower pressing block 22 is fixed, and finally the second upper pressing block 21 and the second lower pressing block 22 are clamped. Specifically, after the cable is electrified and compressed for a period of time, the compressed cable deforms substantially stably, at this time, the distance between the second upper compression block 21 and the second lower compression block 22 is substantially unchanged, an adjustable clamping member is used, the second connecting rod 52 is fixed on the second lower compression block 22, then the second nut 53 is attached to the third clamping plate 51 by screwing the second nut 53, at this time, the power supply of the second upper electromagnet 42 and the second lower electromagnet 47 is cut off, the interaction force between the second upper electromagnet 42 and the second lower electromagnet 47 disappears, although the third clamping plate 51 has an upward trend under the resetting action of the second resetting spring 31, under the action of the second nut 53, the third clamping plate 51 is still, that is, the fixed distance between the second lower compression block 22 and the third clamping plate 51 is unchanged, at this time, the compression action of the second upper compression block 21 and the second lower compression block 22 on the cable is unchanged, the original pressing force is still kept to be pressed, namely under the power-off action, continuous pressing force unchanged pressing can be still realized, electric energy can be saved, and the device has the advantage of low energy consumption.

The utility model discloses a work flow of preferred embodiment does: the linear motor 4 rotates to drive the lead screw 7 to rotate, so that the first pressing mechanism is driven, when the distance between the first pressing mechanism and the second pressing mechanism is approximately equal to the length of a cable to be tested, the linear motor stops rotating, one end of the cable to be tested is placed between the first upper pressing block 8 and the first lower pressing block 26 of the first pressing mechanism, and the first upper electromagnet is arranged38 and a first lower electromagnet 40 are electrified, the electromagnets generate magnetic mutual adsorption, the first upper pressing block 8 and the first lower pressing block 26 realize the pressing of one end of the cable to be detected, the other end of the cable to be detected is placed between a second upper pressing block 21 and a second lower pressing block 22 of a second pressing mechanism, a second upper electromagnet 42 and a second lower electromagnet 47 are electrified, the electromagnets generate magnetic mutual adsorption, the second upper pressing block 21 and the second lower pressing block 22 realize the pressing of the other end of the cable to be detected, the pressing force value of the cable to be detected is controlled by input current, and the obtained pressing force is realized by inputting different current values; the cable to be measured is in a straightening state (if the cable to be measured is soft, the linear motor 4 can be started to enable the first pressing mechanism to move to straighten the cable to be measured), the position of the first pressing mechanism is measured (the grating ruler 3 or other tools can be used), and the length L of the cable to be measured is measured, the diameter D of the cable measured by tools such as a vernier caliper and the like is measured, the first pressing mechanism is driven by the linear motor 4 and the lead screw 7 to do linear motion far away from the second pressing mechanism and stretch the cable, after the tension sensor 13 detects that the tension reaches a preset value F, the linear motor 4 stops moving, the first pressing mechanism stops moving along with the linear motor, the current state is kept, the position of the first pressing mechanism at the moment is measured, the drawing distance Δ L of the cable can be measured by comparing the positions of the first pressing mechanism twice, and is defined by the cross-sectional area a =ofthe cable.And Young's modulus E = (F.L)/(A. DELTA.L), and the value of Young's modulus E can be obtained by conversion. In the utility model, the pressing force of the cable can be accurately controlled, and highly automatic pressing and pressing force adjustment can be realized, so that the corresponding and reasonable pressing force can be applied according to different cables or cables with the same specification, and the measurement precision of the elastic modulus of the cable is ensured; the stretching of the cable is continuous, so that the problems that reading errors are large, the stress of the cable to be measured is discontinuous and the like caused by a discontinuous stretching mode are solved, the measurement precision of the elastic modulus of the cable is improved, and the measurement efficiency and the automation degree are improved.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The Young's modulus detection device of the cable comprises a rack, a tension sensor and a stretching mechanism, wherein the tension sensor and the stretching mechanism are arranged on the rack, the stretching mechanism comprises a driving mechanism and a pressing mechanism, the pressing mechanism comprises a first pressing mechanism and a second pressing mechanism, the first pressing mechanism is arranged on the driving mechanism and driven by the driving mechanism to move, and the second pressing mechanism is arranged on the tension sensor, and the Young's modulus detection device is characterized in that: the first pressing mechanism and the second pressing mechanism respectively comprise a frame body and sliding grooves which are oppositely formed in two side edges of the frame body, two pressing blocks are arranged on the frame body from top to bottom, two ends of each pressing block are installed in the sliding grooves in a matched mode through sliding blocks, an elastic piece is arranged between the two pressing blocks to enable the two pressing blocks to be mutually separated when the pressing blocks are in standing, electromagnets are respectively arranged on the two pressing blocks, and the electromagnets are mutually attracted when powered on to enable the two pressing blocks to be mutually close.

2. The apparatus for detecting the Young's modulus of a cable according to claim 1, wherein: the frame is including the top board and set up the support column of top board bottom surface, drawing mechanism sets up on the bottom surface of top board.

3. The apparatus for detecting the Young's modulus of a cable according to claim 2, wherein: the stretching mechanism is an air cylinder or a hydraulic cylinder or a screw rod mechanism.

4. The apparatus for detecting the Young's modulus of a cable according to claim 2, wherein: the stretching mechanism is a screw rod mechanism and comprises a linear motor and a screw rod driven by the linear motor to rotate, a threaded hole matched with the external thread of the screw rod is further formed in the top of a frame body in the first pressing mechanism, and the screw rod penetrates through the threaded hole; the bottom surface of the upper pressing plate is further provided with a groove, the extending direction of the groove is parallel to the lead screw, and the top of the frame body in the first pressing mechanism is further provided with a convex block matched with the groove.

5. The apparatus for detecting Young's modulus of a cable according to claim 4, wherein: a round rod parallel to the lead screw is arranged below the upper pressing plate, a through hole is further formed in the bottom of the frame body in the first pressing mechanism, and the round rod penetrates through the through hole.

6. The apparatus for detecting the Young's modulus of a cable according to claim 2, wherein: and a grating ruler is arranged on the side surface of the upper pressing plate.

7. The apparatus for detecting the Young's modulus of a cable according to claim 1, wherein: the transverse section of the sliding chute is in a dovetail shape.

8. The apparatus for detecting the Young's modulus of a cable according to claim 1, wherein: and the frame body is provided with a wire harness fixing clamp.

9. The apparatus for detecting the Young's modulus of a cable according to claim 1, wherein: and the pressing surface of the pressing block is provided with rectangular teeth.

10. The apparatus for detecting the Young's modulus of a cable according to claim 1, wherein: the first pressing mechanism and the second pressing mechanism further respectively comprise adjustable clamping pieces used for clamping the two pressing blocks, and each adjustable clamping piece comprises a connecting rod and a clamping plate movably arranged on the connecting rod.

Images