CN114047070A - A test device for testing wire rope performance - Google Patents
A test device for testing wire rope performance Download PDFInfo
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- CN114047070A CN114047070A CN202111262025.5A CN202111262025A CN114047070A CN 114047070 A CN114047070 A CN 114047070A CN 202111262025 A CN202111262025 A CN 202111262025A CN 114047070 A CN114047070 A CN 114047070A
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- 238000012360 testing method Methods 0.000 title claims abstract description 42
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 82
- 239000010959 steel Substances 0.000 claims abstract description 82
- 238000009434 installation Methods 0.000 claims abstract description 50
- 238000000034 method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000001174 ascending effect Effects 0.000 claims description 3
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- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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Abstract
The invention provides a test device for testing the performance of a steel wire rope, which comprises a mounting frame, wherein a first connecting frame and a second connecting frame are respectively arranged at two ends of the mounting frame; a hydraulic telescopic cylinder is arranged on the first connecting frame, a piston rod of the hydraulic telescopic cylinder is fixedly connected with a flange plate, one end of the flange plate is provided with a tension sensor, the tension sensor and the second connecting frame are both provided with first threaded holes, and the first threaded holes can be connected with lifting bolts or first pulleys; an installation column is further installed between the first connecting frame and the second connecting frame, a bottom plate is installed on the installation column, a clamp unit used for clamping a steel wire rope is installed on the bottom plate, an I-shaped pulley plate with an adjustable upper position and a lower position is further installed between the supports above the clamp unit, and a plurality of pulley rod units with adjustable positions are arranged on the I-shaped pulley plate; this application can test wire rope's axial load characteristic, creep characteristic, synchronism and frictional wear condition, and application scope is wide.
Description
Technical Field
The invention relates to the field of steel wire rope testing, in particular to a testing device for testing the performance of a steel wire rope.
Background
The steel wire rope is a spiral steel wire bundle formed by twisting steel wires with mechanical property and geometric dimension meeting requirements together according to a certain rule, and comprises steel wires, a rope core and lubricating grease; the steel wire rope is widely applied to multiple industries such as transportation, construction, mining and the like due to excellent mechanical properties, so that the need of testing the performance of the steel wire rope becomes one of main and important links in the research and development and production processes of the steel wire rope, and the conventional commercial steel wire rope performance test experiment bench has the problems of high price, high maintenance cost, difficulty in installation and the like.
Disclosure of Invention
The invention aims to provide a test device for testing the performance of a steel wire rope.
The invention aims to realize the purpose by the technical scheme, which comprises a mounting frame, wherein the mounting frame comprises four supports and an object placing plate arranged at the top ends of the four supports, a first connecting frame is arranged between the two supports at one end of the mounting frame, a second connecting frame is arranged between the two supports at the other end of the mounting frame, a hydraulic telescopic cylinder is arranged on the first connecting frame, a flange plate is fixedly connected onto a piston rod of the hydraulic telescopic cylinder, a tension sensor is arranged at one end of the flange plate, the tension sensor and the second connecting frame are both provided with first threaded holes, the first threaded holes at two sides are coaxially arranged, and the first threaded holes can be connected with lifting ring bolts or first pulleys;
the steel wire rope clamping device is characterized in that a mounting column is further mounted between the first connecting frame and the second connecting frame, a bottom plate is mounted on the mounting column, a clamp unit used for clamping a steel wire rope is mounted on the bottom plate, an H-shaped pulley plate with an adjustable upper position and a lower position is further mounted between supports above the clamp unit, and a plurality of pulley rod units with adjustable positions are arranged on the H-shaped pulley plate.
Furthermore, the side walls of the bracket are respectively provided with a first sliding chute along the vertical direction, the side walls of the bracket at two sides of the first sliding chutes are respectively provided with a plurality of bolt holes at equal intervals, the I-shaped pulley plate slides along the first sliding chutes, and four ends of the I-shaped pulley plate are respectively provided with a limit pin hole matched with the bolt holes;
a second sliding groove is formed in the I-shaped pulley plate, and the plurality of pulley rod units can slide along the second sliding groove.
Furthermore, the pulley rod unit comprises an I-shaped sliding block, an electric telescopic rod, a pulley mounting frame and a second pulley;
the I-shaped sliding block can slide along the second sliding groove, an electric telescopic rod is arranged below the I-shaped sliding block, a pulley mounting frame is arranged at the telescopic end of the electric telescopic rod, and a second pulley is arranged on the pulley mounting frame;
and a motor mounting box is further mounted on the side wall of the pulley mounting frame of one of the pulley lever units, and a first motor for driving the second pulley is mounted in the motor mounting box.
Further, the clamp unit comprises a worm gear lead screw lifter, a servo motor, a pressure sensor and a clamping mechanism;
the worm gear lead screw lifter and the servo motor are both arranged on the bottom plate, and the power input end of the worm gear lead screw lifter is connected with the power output shaft of the servo motor;
the top end of a lead screw of the worm wheel lead screw lifter is connected with the bottom end of the pressure sensor; a clamping mechanism for clamping a steel wire is installed on the top end of the pressure sensor, the clamping mechanism comprises a first clamping assembly and a second clamping assembly arranged at one end of the first clamping assembly, and a transmission assembly is further arranged between the first clamping assembly and the second clamping assembly.
Further, the first clamping assembly comprises an installation box, a first supporting plate, a first guide pillar, a first spring, a first clamping plate, a first installation hole, a second threaded hole, a first extension rod, a first pre-tightening extension rod, a first through hole, a third threaded hole, a first fastening screw rod and a first limiting block;
the bottom end of the installation box is fixedly connected with the top end of the pressure sensor, two sides of the upper surface of the installation box are both provided with sliding holes, the two first support plates respectively slide up and down along the sliding holes on the two sides, a first guide pillar in sliding fit with the first support plates is installed in the installation box, a first spring is further sleeved on the first guide pillar between the first support plate and the bottom of the installation box, and first limit blocks for limiting the first support plates are further installed in the installation box on the two sides of the first guide pillar;
the two side walls of the installation box are fixedly connected with first clamping plates, the upper surfaces of the first clamping plates and the upper surface of the installation box are arranged in an obtuse angle, a first installation hole is formed in the first clamping plate on one side of the installation box, a second threaded hole is formed in the first clamping plate on the other side of the installation box, one end of a first extension rod is installed in the first installation hole, and the end, provided with threads, of the first pre-tightening extension rod is in threaded connection with the second threaded hole;
the center of the first extension rod and the center of the first pre-tightening extension rod are provided with first through holes used for penetrating steel wires, third threaded holes penetrating through the inner wall and the outer wall of the first extension rod and the first pre-tightening extension rod are formed in the first extension rod and the first pre-tightening extension rod, and the first fastening screw rod is in threaded connection with the third threaded holes.
Further, the first clamping assembly comprises a mounting plate, a clamp plate, a second spring, a second support plate, a second mounting hole, a fourth threaded hole, a second extension rod, a second pre-tightening extension rod, a second through hole, a fourth threaded hole, a second fastening screw, a second guide pillar and a second clamping plate;
the mounting plate is fixed on the side wall of one end of the mounting box, a plurality of second guide pillars are mounted on the mounting plate, the clamp plate slides along the second guide pillars, a second clamping plate is mounted on the clamp plate, second springs are sleeved on the second guide pillars between the clamp plate and the mounting plate, second support plates are fixedly connected to two sides of the clamp plate, the upper surface of each second support plate and the upper surface of the clamp plate form an obtuse angle, a second mounting hole is formed in the second support plate on one side of the clamp plate, a fourth threaded hole is formed in the second support plate on the other side of the clamp plate, one end of a second extension rod is mounted in the second mounting hole, and the end, provided with threads, of the second pre-tightening extension rod is in threaded connection with the fourth threaded hole;
the center of the second extension rod and the center of the second pre-tightening extension rod are both provided with second through holes used for penetrating steel wires, the second extension rod and the second pre-tightening extension rod are both provided with fourth threaded holes penetrating through the inner wall and the outer wall of the second extension rod, and the second fastening screw rod is in threaded connection with the fourth threaded holes.
Furthermore, the transmission assembly comprises a second limiting block, a first driving block, a second driving block, a third guide pillar, a third driving block, a fourth driving block and a third spring;
a first driving block is mounted on the side wall, close to the second clamping assembly, of the first supporting plate, a second driving block is mounted at the bottom of the clamp plate, a third guide pillar is in sliding fit with a sliding hole in the side wall of the installation box, a third driving block is mounted at one end, located in the installation box, of the third guide pillar, a fourth driving block is mounted at one end, located outside the installation box, of the third guide pillar, and a third spring is further sleeved on the third guide pillar between the third driving block and the side wall of the installation box;
the upper end of the end face of the first driving block, which is close to the third driving block, and the lower end of the end face of the third driving block, which is close to the first driving block, are both provided with a first guide bevel angle, and the first driving block drives the third driving block to move towards one end close to the second clamping assembly in the ascending process;
a second guide oblique angle is arranged at one end, close to the fourth driving block, of the upper end face of the second driving block and at one end, close to the second driving block, of the lower end face of the fourth driving block, and the second driving block drives the fourth driving block to move upwards in the process of moving towards one end, far away from the installation box, of the second driving block;
and a second limiting block used for limiting the mounting plate and the second driving block is arranged on the mounting plate below the second driving block.
Further, still install the sensor mounting bracket on the erection column, the displacement sensor who is used for detecting steel wire deformation is installed to the sensor mounting bracket.
Due to the adoption of the technical scheme, the invention has the following advantages:
1. the axial bearing characteristic, the creep characteristic, the synchronism and the friction and wear conditions of the steel wire rope can be tested, and the application range is wide;
2. this application is carrying out wire rope axial and is bearing the weight of the characteristic, when the creep characteristic test, fix wire rope on the eyebolt at both ends, apply the pulling force through hydraulic telescoping rod, carry out the pulling force detection through force transducer, when carrying out the synchronism test, change eyebolt for first pulley, through bypassing two first pulleys and two second pulleys with the steel wire, apply the pulling force through hydraulic telescoping rod, make the steel wire hug closely first pulley and carry out the synchronism experiment with the second pulley, hydraulic telescoping rod and force transducer of this application can be used for carrying out wire rope axial and bear the weight of the characteristic, the creep characteristic, the synchronism experiment, the second pulley can be used for carrying out the synchronism, the friction test experiment, compact structure, and low cost.
3. This application is when carrying out the friction experiment, all installs the steel wire on first centre gripping subassembly and second centre gripping subassembly, after the steel wire fracture on first centre gripping subassembly in friction process, first grip block goes upward to go through drive assembly drive second centre gripping subassembly, makes the steel wire contact between the steel wire on the second centre gripping subassembly and the second gyro wheel continue to rub, in carrying out the friction test process to the steel wire between the second gyro wheel, has avoided changing the steel wire and has caused the error to the experimental structure.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof.
Drawings
The drawings of the present invention are described below.
FIG. 1 is a schematic structural diagram of the present invention in a friction test.
FIG. 2 is a schematic structural diagram of the synchronization experiment performed in the present invention.
Fig. 3 is an isometric view of the clamp unit of the present invention.
Fig. 4 is a top view of the gripper unit of the present invention.
Fig. 5 is a cross-sectional view taken at a-a of fig. 4 in accordance with the present invention.
Fig. 6 is a partial enlarged view of the invention at B in fig. 2.
Fig. 7 is a schematic structural view of an i-shaped pulley plate according to the present invention.
In the figure: 1-a mounting frame; 2-a scaffold; 3-a storage plate; 4-a first connecting frame; 5-a second connecting frame; 6-hydraulic telescopic cylinder; 7-a flange plate; 8-a tension sensor; 9-a first threaded hole; 10-eye bolts; 11-a first pulley; 12-h-shaped pulley plates; 13-mounting a post; 14-a base plate; 15-bolt holes; 16-a limit pin hole; 17-a second runner; 18-i-shaped slider; 19-an electric telescopic rod; 20-a pulley mounting frame; 21-a second pulley; 22-motor mounting box; 23-a first motor; 24-worm screw hoist; 25-a servo motor; 26-a pressure sensor; 27-mounting a box; 28-a first support plate; 29-a first guide post; 30-a first spring; 31-a first clamping plate; 32-a first mounting hole; 33-a second threaded hole; 34-a first extension pole; 35-a first pre-tensioned extension bar; 36-a first via; 37-a third threaded hole; 38-a first fastening screw; 39-a first stopper; 40-mounting a plate; 41-a clamp plate; 42-a second spring; 43-a second support plate; 44-a second mounting hole; 45-fourth threaded hole; 46-a second extension bar; 47-a second pre-tensioned extension bar; 48-a second via; 49-a fourth threaded hole; 50-a second fastening screw; 51-a second stopper; 52-first drive block; 53-a second drive block; 54-a third guide pillar; 55-a third drive block; 56-fourth drive block; 57-a third spring; 58-a sensor mount; 59-displacement sensor; 60-a first chute; 61-U-shaped limit pieces; 62-a second guide post; 63-a second clamping plate.
Detailed Description
The invention is further illustrated by the following figures and examples.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" 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; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
The test device for testing the performance of the steel wire rope comprises a mounting frame 1, wherein the mounting frame 1 comprises four supports 2 and a placing plate 3 arranged at the top ends of the four supports 2, a first connecting frame 4 is arranged between the two supports 2 at one end of the mounting frame 1, a second connecting frame 5 is arranged between the two supports 2 at the other end of the mounting frame 1, a hydraulic telescopic cylinder 6 is arranged on the first connecting frame 4, a piston rod of the hydraulic telescopic cylinder 6 is fixedly connected with a flange 7, one end of the flange 7 is provided with a tension sensor 8, the tension sensor 8 and the second connecting frame 4 are both provided with first threaded holes 9, the first threaded holes 9 at two sides are coaxially arranged, and the first threaded holes 9 can be connected with lifting bolts 10 or first pulleys 11;
still install erection column 13 between first link 4 and the second link 5, install bottom plate 14 on the erection column 13, install the anchor clamps unit that is used for centre gripping wire rope on the bottom plate 14, position adjustable I-shaped pulley plate 12 about still installing between the support 2 of anchor clamps unit top, be provided with a plurality of position adjustable pulley lever units on the I-shaped pulley plate 12.
In the embodiment of the invention, two lifting eye bolts 10 are fixed on the first threaded holes 9 at two sides, two ends of a steel wire are fixedly connected on the two lifting eye bolts 10, tension is applied through a hydraulic telescopic cylinder 6, a tension sensor 8 is adopted to control the tension, a displacement sensor accurately acquires the elongation of the steel wire rope, an axial bearing characteristic experiment of the steel wire is realized, and meanwhile, a creep characteristic experiment of the steel wire can also be realized by continuously applying the tension through the hydraulic telescopic cylinder 6; in the embodiment of the invention, the eyebolt 10 is replaced by the first pulley 11, the annular steel wire is sleeved between the two first pulleys 11 and the second pulleys 21 of the two pulley rod units, the hydraulic telescopic cylinder 6 applies tension to make the annular steel wire tightly attached to the first pulley 11 and the second pulley 21 so as to drive the first pulley 11 and the second pulley 21 to rotate, and the angular speed sensors (not shown in the figure) on the first pulley 11 and the second pulley 21 can measure the rotating speeds of different pulleys, so that the experiment of the synchronism of the lower pulley in the transmission of the steel wire rope is realized; in the present example, the friction test of the wire was performed by placing the ring-shaped wire between the second pulleys 21 of the two pulley lever units, fixing the other wire to the jig unit, and contacting the wire on the jig unit with the ring-shaped wire.
As an embodiment of the present invention, the side walls of the bracket 2 are both provided with first sliding grooves 60 along the vertical direction, the side walls of the bracket 2 at both sides of the first sliding grooves 60 are provided with a plurality of bolt holes 15 at equal intervals, the i-shaped pulley plate 12 slides along the first sliding grooves 60, and four ends of the i-shaped pulley plate 12 are both provided with limit pin holes 16 matched with the bolt holes 15;
the h-shaped pulley plate 12 is provided with a second sliding groove 17, and the plurality of pulley bar units can slide along the second sliding groove 17.
In the embodiment of the present invention, the i-shaped pulley plate 12 can slide up and down in the first sliding groove 60, the position of the i-shaped pulley plate 12 can be adjusted up and down by the cooperation of the pin hole 15, the limiting pin hole 16 and a pin (not shown in the figure), a plurality of pulley rod units can slide in the second sliding groove 17, and when the pulley rod units are adjusted to the position required by the experiment, the pulley rod units are limited by the U-shaped limiting piece 61.
As an embodiment of the present invention, the pulley rod unit comprises a i-shaped sliding block 18, an electric telescopic rod 19, a pulley mounting frame 20, and a second pulley 21;
the I-shaped sliding block 18 can slide along the second sliding groove 17, an electric telescopic rod 19 is installed below the I-shaped sliding block 18, a pulley installation frame 20 is installed at the telescopic end of the electric telescopic rod 19, and a second pulley 21 is installed on the pulley installation frame 20;
a motor mounting box 22 is further mounted on the side wall of the pulley mounting frame 20 of one of the pulley lever units, and a first motor 23 for driving the second pulley 21 is mounted in the motor mounting box 22.
In the embodiment of the invention, when a steel wire friction experiment is carried out, the annular steel wire is sleeved on the two second pulleys 21, the first motor 23 is started, and the steel wire is driven to carry out circular motion to rub the steel wire on the clamp; when a synchronism test is carried out, the annular steel wire is sleeved on the two first pulleys 11 and the two second pulleys 21, the first motor 23 is started, the steel wire is driven to carry out circumference, and the rotating speeds of the different pulleys can be measured by using angular speed sensors (not shown in the figure) on the first pulleys 11 and the second pulleys 21.
As an embodiment of the present invention, the clamp unit includes a worm screw elevator 24, a servo motor 25, a pressure sensor 26, a clamping mechanism;
the worm gear lead screw lifter 24 and the servo motor 25 are both arranged on the bottom plate 14, and the power input end of the worm gear lead screw lifter 24 is connected with the power output shaft of the servo motor 25;
the top end of a screw rod of the worm gear screw rod lifter 24 is connected with the bottom end of the pressure sensor 26; a clamping mechanism for clamping the steel wire is installed on the top end of the pressure sensor 26, the clamping mechanism comprises a first clamping assembly and a second clamping assembly arranged at one end of the first clamping assembly, and a transmission assembly is further arranged between the first clamping assembly and the second clamping assembly.
In the embodiment of the invention, a worm wheel screw rod lifter 24 is driven by a servo motor 25 to move, the worm wheel screw rod lifter 24 drives a pressure sensor 26 and a clamping mechanism to lift up and down, in the friction experiment process, a steel wire on a first clamping assembly is above a steel wire on a second clamping assembly, the steel wire arranged on the first clamping assembly is firstly in contact friction with an annular steel wire between two second pulleys 21, after the steel wire on the first clamping assembly is broken, the first clamping assembly drives the second clamping assembly to move upwards through a transmission assembly, the steel wire on the second clamping assembly is in contact with the annular steel wire to continue the friction experiment, the pressure of contact between the steel wires is detected through the pressure sensor, and meanwhile, the screw rod is rotated in advance when a lifter is arranged, so that the clamp can rotate for a certain angle. An angle scale (not shown in the figure) is engraved or drawn on the circular hole surface at the upper end of the lifter and used as a reference for the rotation angle of the clamp. Therefore, the two steel wire ropes can be rubbed at a certain angle in the friction experiment, and the experiment is enriched.
As an embodiment of the present invention, the first clamping assembly includes a mounting box 27, a first supporting plate 28, a first guide post 29, a first spring 30, a first clamping plate 31, a first mounting hole 32, a second threaded hole 33, a first extension rod 34, a first pre-tightening extension rod 35, a first through hole 36, a third threaded hole 37, a first fastening screw 38, and a first limiting block 39;
the bottom end of the installation box 27 is fixedly connected with the top end of the pressure sensor 12, sliding holes are formed in two sides of the upper surface of the installation box 27, the two first support plates 28 respectively slide up and down along the sliding holes in the two sides, a first guide pillar 29 in sliding fit with the first support plates 28 is installed in the installation box 27, a first spring 30 is further sleeved on the first guide pillar 29 between the first support plates 28 and the bottom of the installation box 27, and first limit blocks 39 for limiting the first support plates 28 are further installed in the installation box 27 on two sides of the first guide pillar 29;
the two side walls of the installation box 27 are fixedly connected with first clamping plates 31, the upper surfaces of the first clamping plates 31 and the upper surface of the installation box 27 form an obtuse angle, a first installation hole 32 is formed in the first clamping plate 31 on one side of the installation box 27, a second threaded hole 33 is formed in the first clamping plate 31 on the other side of the installation box 27, one end of a first extension rod 34 is installed in the first installation hole 32, and one end, provided with threads, of the first pre-tightening extension rod 35 is in threaded connection with the second threaded hole 33;
the center of the first extension rod 34 and the center of the first pre-tightening extension rod 35 are both provided with a first through hole 36 for passing through a steel wire, the first extension rod 34 and the first pre-tightening extension rod 35 are both provided with a third threaded hole 37 penetrating through the inner wall and the outer wall of the first pre-tightening extension rod, and the first fastening screw 38 is in threaded connection with the third threaded hole 37.
In the embodiment of the invention, when a friction test is required, two ends of a steel wire are respectively arranged in the first through holes 36 of the first extension rod 34 and the first pre-tightening extension rod 35, the two ends of the steel wire are fixed through the first fastening screw 38, the first pre-tightening extension rod 35 is screwed to tighten the steel wire, the tightening degree of the steel wire can also be controlled by using a torque wrench, the first clamping plate 31 is driven to move downwards in the process of tightening the steel wire, and when the lower surface of the first clamping plate 31 is contacted with the first limiting block 39, the fixation of the steel wire is finished.
As an embodiment of the present invention, the first clamping assembly includes a mounting plate 40, a clamp plate 41, a second spring 42, a second support plate 43, a second mounting hole 44, a fourth threaded hole 45, a second extension rod 46, a second pretension extension rod 47, a second through hole 48, a fourth threaded hole 49, a second fastening screw 50, a second guide pillar 62, a second clamping plate 63;
the mounting plate 40 is fixed on the side wall of one end of the mounting box 27, a plurality of second guide posts 62 are mounted on the mounting plate 40, the clamp plate 41 slides along the second guide post 62, a second clamping plate 63 is mounted on the clamp plate 41, a second spring 42 is sleeved on each second guide post 62 between the clamp plate 41 and the mounting plate 40, the two sides of the clamp plate 41 are fixedly connected with second supporting plates 43, the upper surfaces of the second supporting plates 43 and the upper surface of the clamp plate 41 form an obtuse angle, a second mounting hole 44 is formed on the second support plate 43 at one side of the clamp plate 41, a fourth screw hole 45 is formed on the second support plate 43 at the other side of the clamp plate 41, one end of the second extension rod 46 is installed in the second installation hole 44, and the end, provided with threads, of the second pre-tightening extension rod 47 is in threaded connection with the fourth threaded hole 45;
the centers of the second extension rod 46 and the second pre-tightening extension rod 47 are provided with second through holes 48 for passing steel wires, the second extension rod 46 and the second pre-tightening extension rod 33 are provided with fourth threaded holes 49 penetrating through the inner wall and the outer wall of the second extension rod, and the second fastening screw 50 is in threaded connection with the fourth threaded holes 49.
In the embodiment of the present invention, when the friction test is required, both ends of the steel wire are respectively disposed in the second through holes 48 of the second extension rod 46 and the second pretension extension rod 47, both ends of the steel wire are fixed by the second tightening screw 50, and the second tightening screw 50 is screwed to tighten the steel wire.
As an embodiment of the present invention, the transmission assembly includes a second stopper 51, a first driving block 52, a second driving block 53, a third guide pillar 54, a third driving block 55, a fourth driving block 56, and a third spring 57;
a first driving block 52 is mounted on the side wall of the first supporting plate 28 close to the second clamping assembly, a second driving block 53 is mounted at the bottom of the clamp plate 41, a third guide pillar 54 is in sliding fit with a sliding hole on the side wall of the mounting box 27, a third driving block 55 is mounted at one end of the third guide pillar 54 located in the mounting box 27, a fourth driving block 56 is mounted at one end of the third guide pillar 54 located outside the mounting box 27, and a third spring 57 is further sleeved on the third guide pillar between the third driving block 55 and the side wall of the mounting box 27;
the upper end of the end surface of the first driving block 52 close to the third driving block 55 and the lower end of the end surface of the third driving block 55 close to the first driving block 52 are both provided with a first guiding bevel, and the first driving block 52 drives the third driving block 55 to move towards one end close to the second clamping assembly in the ascending process;
a second guide bevel is arranged at one end of the upper end surface of the second driving block 53 close to the fourth driving block 56 and at one end of the lower end surface of the fourth driving block 56 close to the second driving block 53, and the fourth driving block 56 is driven to move upwards in the process that the second driving block 53 moves towards one end far away from the installation box 27;
a second stopper 51 for limiting the mounting plate 40 and the second driving block 53 is mounted on the mounting plate 40 below the second driving block 53.
In the embodiment of the invention, in the friction experiment process, after the steel wire on the first clamping assembly is broken, the first clamping plate 31 moves upwards under the action of the first spring 30, the first driving block 52 on one side of the first clamping plate 31 moves upwards to drive the third driving block 55 and the fourth driving block 56 to move towards one side close to the second clamping assembly, and the fourth driving block 56 drives the second driving block 53 and the second clamping assembly to move upwards to enable the steel wire on the second clamping assembly to be in contact with the annular steel wire between the second pulleys 21, so that the friction experiment is continued; when the next friction test is carried out, a steel wire is installed on the first clamping assembly, the first clamping plate 31 and the first driving block 52 descend, the third driving block 55 and the fourth driving block 56 move to one side far away from the second clamping assembly under the action of the third spring 57, and the second clamping assembly and the second driving block 53 reset under the action of the second spring; in the embodiment of the present invention, the outer wall of the third guide post 54 is provided with a limit boss to prevent the third guide post 54 from rotating during sliding; meanwhile, the lower surface of the fourth driving block 56 is always in contact with the second limiting block 51, and the third guide pillar 54 is stressed and deformed when the fourth driving block is placed in a friction process.
In an embodiment of the present invention, a sensor mounting bracket 58 is further mounted on the mounting column 13, and a displacement sensor 59 for detecting deformation of the steel wire is mounted on the sensor mounting bracket 58.
In the present example, when the steel wire axial load characteristic test is performed, the elongation of the steel wire rope is obtained by the displacement sensor 59.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (8)
1. The test device for testing the performance of the steel wire rope comprises a mounting rack (1), wherein the mounting rack (1) comprises four supports (2) and a storage plate (3) arranged at the top ends of the four supports (2), and is characterized in that a first connecting rack (4) is arranged between the two supports (2) at one end of the mounting rack (1), a second connecting rack (5) is arranged between the two supports (2) at the other end of the mounting rack (1), a hydraulic telescopic cylinder (6) is arranged on the first connecting rack (4), a flange plate (7) is fixedly connected onto a piston rod of the hydraulic telescopic cylinder (6), a tension sensor (8) is arranged at one end of the flange plate (7), first threaded holes (9) are formed in the tension sensor (8) and the second connecting rack (4), and the first threaded holes (9) on two sides are coaxially arranged, the first threaded hole (9) can be connected with an eyebolt (10) or a first pulley (11);
still install between first link (4) and second link (5) erection column (13), install bottom plate (14) on erection column (13), install the anchor clamps unit that is used for centre gripping wire rope on bottom plate (14), position adjustable's I-shaped pulley board (12) about still installing between support (2) of anchor clamps unit top, be provided with a plurality of position adjustable pulley lever units on I-shaped pulley board (12).
2. The test device for testing the performance of the steel wire rope according to claim 1, wherein the side walls of the support (2) are provided with first sliding grooves (60) along the vertical direction, the side walls of the support (2) at two sides of the first sliding grooves (60) are provided with a plurality of pin holes (15) at equal intervals, the I-shaped pulley plate (12) slides along the first sliding grooves (60), and four ends of the I-shaped pulley plate (12) are provided with limit pin holes (16) matched with the pin holes (15);
a second sliding groove (17) is formed in the I-shaped pulley plate (12), and the plurality of pulley rod units can slide along the second sliding groove (17).
3. The test device for testing the performance of the steel wire rope according to claim 2, wherein the pulley lever unit comprises an I-shaped sliding block (18), an electric telescopic rod (19), a pulley mounting frame (20) and a second pulley (21);
the I-shaped sliding block (18) can slide along the second sliding groove (17), an electric telescopic rod (19) is installed below the I-shaped sliding block (18), a pulley installation frame (20) is installed at the telescopic end of the electric telescopic rod (19), and a second pulley (21) is installed on the pulley installation frame (20);
and a motor mounting box (22) is further mounted on the side wall of the pulley mounting frame (20) of one of the pulley lever units, and a first motor (23) for driving the second pulley (21) is mounted in the motor mounting box (22).
4. The test device for testing the performance of the steel wire rope according to claim 1, wherein the clamp unit comprises a worm screw elevator (24), a servo motor (25), a pressure sensor (26), a clamping mechanism;
the worm gear lead screw lifter (24) and the servo motor (25) are both arranged on the bottom plate (14), and the power input end of the worm gear lead screw lifter (24) is connected with the power output shaft of the servo motor (25);
the top end of a lead screw of the worm gear lead screw lifter (24) is connected with the bottom end of the pressure sensor (26); a clamping mechanism for clamping a steel wire is installed at the top end of the pressure sensor (26), the clamping mechanism comprises a first clamping assembly and a second clamping assembly arranged at one end of the first clamping assembly, and a transmission assembly is further arranged between the first clamping assembly and the second clamping assembly.
5. The test device for testing the performance of the steel wire rope according to claim 4, wherein the first clamping assembly comprises a mounting box (27), a first supporting plate (28), a first guide pillar (29), a first spring (30), a first clamping plate (31), a first mounting hole (32), a second threaded hole (33), a first extension rod (34), a first pre-tightening extension rod (35), a first through hole (36), a third threaded hole (37), a first fastening screw (38) and a first limiting block (39);
the bottom end of the installation box (27) is fixedly connected with the top end of the pressure sensor (12), sliding holes are formed in two sides of the upper surface of the installation box (27), the two first support plates (28) respectively slide up and down along the sliding holes in the two sides, a first guide pillar (29) in sliding fit with the first support plates (28) is installed in the installation box (27), a first spring (30) is further sleeved on the first guide pillar (29) between the first support plates (28) and the bottom of the installation box (27), and first limiting blocks (39) for limiting the first support plates (28) are further installed in the installation box (27) on the two sides of the first guide pillar (29);
the two side walls of the installation box (27) are fixedly connected with first clamping plates (31), the upper surfaces of the first clamping plates (31) and the installation box (27) are arranged in an obtuse angle mode, first installation holes (32) are formed in the first clamping plates (31) on one side of the installation box (27), second threaded holes (33) are formed in the first clamping plates (31) on the other side of the installation box (27), one ends of first extension rods (34) are installed in the first installation holes (32), and the ends, provided with threads, of the first pre-tightening extension rods (35) are in threaded connection with the second threaded holes (33);
the center of the first extension rod (34) and the center of the first pre-tightening extension rod (35) are provided with first through holes (36) used for penetrating steel wires, third threaded holes (37) penetrating through the inner wall and the outer wall of the first extension rod (34) and the first pre-tightening extension rod (35) are formed in the first extension rod and the first pre-tightening extension rod, and the first fastening screw rod (38) is in threaded connection with the third threaded holes (37).
6. The test device for testing the performance of the steel wire rope according to claim 5, wherein the first clamping assembly comprises a mounting plate (40), a clamp plate (41), a second spring (42), a second support plate (43), a second mounting hole (44), a fourth threaded hole (45), a second extension rod (46), a second pre-tightening extension rod (47), a second through hole (48), a fourth threaded hole (49), a second fastening screw (50) and a second clamping plate (63);
the mounting plate (40) is fixed on the side wall of one end of the mounting box (27), the mounting plate (40) is provided with a plurality of second guide posts (62), the clamp plate (41) slides along the second guide posts (62), the clamp plate (41) is provided with a second clamping plate (63), the second guide posts (62) between the clamp plate (41) and the mounting plate (40) are sleeved with second springs (42), both sides of the clamp plate (41) are fixedly connected with second supporting plates (43), the upper surface of each second supporting plate (43) and the upper surface of the corresponding clamp plate (41) are arranged in an obtuse angle, a second mounting hole (44) is formed in each second supporting plate (43) on one side of the clamp plate (41), a fourth threaded hole (45) is formed in each second supporting plate (43) on the other side of the clamp plate (41), one end of each second extension rod (46) is mounted in each second mounting hole (44), one end, provided with threads, of the second pre-tightening extension rod (47) is in threaded connection with the fourth threaded hole (45);
the center of the second extension rod (46) and the center of the second pre-tightening extension rod (47) are both provided with second through holes (48) used for penetrating steel wires, the second extension rod (46) and the second pre-tightening extension rod (33) are both provided with fourth threaded holes (49) penetrating through the inner wall and the outer wall of the second extension rod, and the second fastening screw (50) is in threaded connection with the fourth threaded holes (49).
7. The testing device for testing the performance of the steel wire rope according to claim 6, wherein the transmission assembly comprises a second limiting block (51), a first driving block (52), a second driving block (53), a third guide pillar (54), a third driving block (55), a fourth driving block (56) and a third spring (57);
a first driving block (52) is mounted on the side wall, close to the second clamping assembly, of the first supporting plate (28), a second driving block (53) is mounted at the bottom of the clamp plate (41), a third guide pillar (54) is in sliding fit with a sliding hole in the side wall of the mounting box (27), a third driving block (55) is mounted at one end, located in the mounting box (27), of the third guide pillar (54), a fourth driving block (56) is mounted at one end, located outside the mounting box (27), of the third guide pillar (54), and a third spring (57) is further sleeved on the third guide pillar between the third driving block (55) and the side wall of the mounting box (27);
the upper end of the end face of the first driving block (52) close to the third driving block (55) and the lower end of the end face of the third driving block (55) close to the first driving block (52) are both provided with a first guide oblique angle, and the third driving block (55) is driven to move towards one end close to the second clamping assembly in the ascending process of the first driving block (52);
a second guide bevel angle is arranged at one end, close to the fourth driving block (56), of the upper end face of the second driving block (53) and at one end, close to the second driving block (53), of the lower end face of the fourth driving block (56), and the second driving block (53) drives the fourth driving block (56) to move upwards in the process of moving towards one end, far away from the installation box (27), of the second driving block;
and a second limiting block (51) used for limiting the mounting plate (40) and the second driving block (53) is mounted on the mounting plate (40) below the second driving block (53).
8. A test device for testing the performance of a steel wire rope according to claim 1, characterized in that a sensor mounting bracket (58) is further mounted on the mounting column (13), and a displacement sensor (59) for detecting the deformation of the steel wire is mounted on the sensor mounting bracket (58).
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115876629A (en) * | 2023-02-14 | 2023-03-31 | 北京金锐世纪高科技有限公司 | Anchor hook emitter climbing rope testing arrangement |
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