CN212228586U

CN212228586U - Cable pulling resistance test equipment

Info

Publication number: CN212228586U
Application number: CN202020891353.6U
Authority: CN
Inventors: 李权恒; 刘冀
Original assignee: Henan Sanheng Industrial Co Ltd
Current assignee: Henan Sanheng Industrial Co Ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2020-12-25
Anticipated expiration: 2030-05-25

Abstract

The utility model discloses a cable pulling resistance test device, which comprises a stretching part and a test part, wherein the stretching part comprises two groups of movable frames which move oppositely or relatively, a plurality of groups of pulleys are arranged inside the movable frames along an axis array, the axes of the pulleys are vertical to the moving direction of the movable frames, the end part of each movable frame is provided with an end part fixer, the test part comprises two groups of lifting frames which can move up and down, the lifting frames are positioned at the middle positions of the two groups of movable frames, a plurality of groups of clamping block groups arranged along the axis direction of the pulleys are arranged inside the lifting frames, each group of clamping block group comprises two clamping blocks which can adjust the distance along the moving direction of the movable frames, a fixed block is arranged between the two clamping blocks, the cable pulling resistance test device can judge the actual stretching point of the cable by detecting the bearing force difference caused by the relative displacement of a surface fixed point in, and determining the telescopic position.

Description

Cable pulling resistance test equipment

Technical Field

The utility model relates to a cable test equipment technical field specifically is an anti test equipment that draws of dragging of cable.

Background

The cable is used for bearing larger axial tension sometimes, so that the cable is required to have certain axial tension resistance, axial expansion and contraction cannot occur when the cable is pulled axially, the section of an inner wire core is stable, the increase of power transmission loss caused by resistance increase is avoided, and the transmission safety of cable power is ensured.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a cable and resist drawing test equipment, through detecting the cable in tensile process, the stress that the relative displacement of fixed surface point caused is poor, judges the actual flexible point of cable, confirms flexible position, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an anti experimental equipment of dragging of pulling of cable, includes tensile portion and test section, tensile portion includes two sets of opposite or relative motion's adjustable shelf, the inside axis array that arranges the multiunit pulley of edge of adjustable shelf, the axis of pulley is perpendicular with the direction of motion of adjustable shelf, the tip of adjustable shelf sets up the tip fixer, the test section includes two sets of cranes that can the up-and-down motion, the crane is in the intermediate position of two sets of adjustable shelf, the inside holder block group that arranges the multiunit along pulley axis direction of arrangement of crane, every holder block group of group include two can follow the holder block of adjustable shelf direction of motion adjustment interval, are provided with the fixed block between two holder blocks, the holder block sets up second pressure sensor respectively with the fixed block corresponding position, the axis of fixed block is tangent with the outer periphery of pulley.

As a preferred technical scheme of the utility model, the two sides of the movable frame are respectively fixedly provided with a lead screw nut, the lead screw nuts at the same side of the two groups of movable frames are internally provided with the same lead screw in a matching way, the end part of the lead screw is provided with a motor, the axis of the lead screw is consistent with the motion direction of the movable frame, and the rotation directions of the two ends of the lead screw are opposite;

the movable frames on the two sides are driven to synchronously move oppositely or oppositely through the transmission of the screw rod.

As a preferred technical solution of the present invention, the fixing block is a two-piece cylindrical structure, and an elastic member is disposed between the fixing block and the second pressure sensor;

through setting up the elastic component, when the cable takes place the axial and stretches out and draws back, must drive the fixed block and move thereupon, through the deformation of elastic component, compensate the displacement volume of fixed block, self deformation produces elastic force simultaneously to transmit this power to second pressure sensor.

As a preferred technical solution of the present invention, the end part fixer is designed in a two-piece structure, and a first pressure sensor is arranged between the end part fixer and the movable frame;

through two lamella formula structural design, be convenient for fix the tip of cable, set up first pressure sensor for detect the atress at tensile in-process cable both ends, belong to the state of tightening at the cable of ensureing to twine in the assembly pulley.

Compared with the prior art, the beneficial effects of the utility model are that: this test equipment is dragged to anti dragging of cable passes through the structural design of assembly pulley, makes the cable can have the stranded simultaneous atress in its inside, and all fixedly sets up the fixed block in every strand, and when axial deformation took place for certain section of cable, the pressure sensor detection value that the fixed block of this position both sides corresponds changes opposite direction, can be in order to accurately judge the extension position of cable according to each group pressure sensor's detected value variation mode.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a sectional view of the present invention;

FIG. 3 is a schematic view of the pulley installation of the present invention;

FIG. 4 is a schematic view of the installation of the clamping block of the present invention;

fig. 5 is an enlarged schematic view of the position a of the present invention.

In the figure: 1 stretching part, 101 movable frame, 102 pulley, 103 end part fixer, 104 lead screw, 105 motor, 106 lead screw nut, 2 testing part, 201 lifting frame, 202 clamping block, 203 fixing block, 204 second pressure sensor and 205 elastic element.

Detailed Description

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

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a test equipment is pulled to anti pulling of cable, including stretching portion 1 and test section 2, stretching portion 1 includes two sets of relative motion's adjustable shelf 101 in opposite directions or relative motion, the inside axis array that follows of adjustable shelf 101 arranges multiunit pulley 102, the axis of pulley 102 is perpendicular with the direction of motion of adjustable shelf 101, the tip of adjustable shelf 101 sets up tip fixer 103, test section 2 includes two sets of crane 201 that can move up and down, crane 201 is in the intermediate position of two sets of adjustable shelf 101, the inside centre gripping block group that arranges multiunit along pulley 102 axis direction that arranges of crane 201, every centre gripping block group includes two can follow the adjustable spacing of adjustable shelf 101 direction of motion 202 grip blocks 202, be provided with fixed block 203 between two grip blocks 202, grip block 202 sets up second pressure sensor 204 with fixed block 203 corresponding position respectively, the axis of fixed block 203 is tangent with the outer periphery of pulley 102.

The two sides of the movable frames 101 are respectively and fixedly provided with a lead screw nut 106, the lead screw nuts 106 on the same sides of the two groups of movable frames 101 are internally and cooperatively provided with the same lead screw 104, the end part of the lead screw 104 is provided with a motor 105, the axis of the lead screw 104 is consistent with the movement direction of the movable frames 101, and the rotation directions of the two ends of the lead screw 104 are opposite;

the movable frames 101 on the two sides are driven to synchronously move relatively or oppositely through the transmission of the screw rod 104.

The fixed block 203 is a two-petal cylindrical structure, and an elastic element 205 is arranged between the fixed block 203 and the second pressure sensor 204;

through setting up elastic component 205, when the cable takes place the axial and stretches out and draws back, must drive fixed block 203 and move thereupon, through the deformation of elastic component 205, compensate the displacement volume of fixed block 203, self deformation produces the elastic force simultaneously to transmit this power to second pressure sensor 204.

The end part fixer 103 is designed to be of a two-petal structure, and a first pressure sensor is arranged between the end part fixer 103 and the movable frame 101;

When in use: fixing one end of a cable with an end part fixer 103 in a movable frame 101 at one side, sequentially winding the cable in pulleys 102 of two groups of movable frames 101, fixing the other end of the cable with the end part fixer 103 in the movable frame 101 at one side, driving a screw 104 to rotate by a motor 105 at the moment, driving the two groups of movable frames 101 to gradually keep away until a first pressure sensor detects vertical linear increase, fixing a fixed block 203 at the middle position of the cable between the two groups of movable frames 101 at the moment, then adjusting the height of a lifting frame 201 to enable the fixed block 203 to be positioned between two groups of clamping blocks 202, adjusting the distance between the two groups of clamping blocks 202 to enable two ends of the fixed block 203 to be respectively in extrusion contact with a second pressure sensor 204 in the clamping blocks 202, then fixing the positions of the lifting frame 201 and the clamping blocks 202, and continuously exerting tension on the cable axially under the action of the motor 105, monitoring the numerical values of the first pressure sensor and the second pressure sensor 204, when the numerical value of the first pressure sensor changes suddenly, the axial elongation of the cable is indicated, if the detected numerical values of all the second pressure sensors 204 are unchanged or the detected numerical values of all the second pressure sensors are consistent, the overall elongation of the cable is indicated, and if the numerical variation of all the second pressure sensors 204 at the moment is in two directions, the cable at the clamping position of the fixed block 203 corresponding to the inflection point position stretches, namely the defect position in the cable is determined.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A cable pulling resistance test device comprises a stretching part (1) and a test part (2), and is characterized in that: the stretching part (1) comprises two sets of opposite or relative motion movable frames (101), a plurality of groups of pulleys (102) are arranged inside the movable frames (101) along an axis array, the axes of the pulleys (102) are perpendicular to the motion direction of the movable frames (101), an end part fixer (103) is arranged at the end part of each movable frame (101), the testing part (2) comprises two sets of lifting frames (201) capable of moving up and down, the lifting frames (201) are positioned at the middle positions of the two sets of movable frames (101), a plurality of groups of clamping block groups arranged along the axis direction of the pulleys (102) are arranged inside the lifting frames (201), each group of clamping block group comprises two clamping blocks (202) capable of adjusting the distance along the motion direction of the movable frames (101), a fixed block (203) is arranged between the two clamping blocks (202), and second pressure sensors (204) are respectively arranged at the corresponding positions of the clamping blocks (202) and the fixed block (203, the axis of the fixed block (203) is tangent to the outer circumferential surface of the pulley (102).

2. The cable pulling resistance test apparatus according to claim 1, wherein: the lead screw nut (106) is fixedly arranged on two sides of each movable frame (101) respectively, the same lead screw (104) is installed in the lead screw nuts (106) on the same sides of the two groups of movable frames (101) in a matched mode, the end portion of the lead screw (104) is provided with a motor (105), the axis of the lead screw (104) is consistent with the moving direction of the movable frames (101), and the two ends of the lead screw (104) are opposite in rotating direction.

3. The cable pulling resistance test apparatus according to claim 1, wherein: the fixed block (203) is of a two-petal type cylindrical structure, and an elastic piece (205) is arranged between the fixed block (203) and the second pressure sensor (204).

4. The cable pulling resistance test apparatus according to claim 1, wherein: the end fixing device (103) is designed to be of a two-petal structure, and a first pressure sensor is arranged between the end fixing device (103) and the movable frame (101).