CN114047070B - Test device for testing performance of steel wire rope - Google Patents
Test device for testing performance of steel wire rope Download PDFInfo
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- CN114047070B CN114047070B CN202111262025.5A CN202111262025A CN114047070B CN 114047070 B CN114047070 B CN 114047070B CN 202111262025 A CN202111262025 A CN 202111262025A CN 114047070 B CN114047070 B CN 114047070B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 92
- 239000010959 steel Substances 0.000 title claims abstract description 92
- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 238000009434 installation Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000001174 ascending effect Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims 1
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 description 17
- 230000009471 action Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram 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
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Classifications
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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
-
- 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
-
- 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
-
- 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
-
- 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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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The application 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; the first connecting frame is provided with a hydraulic telescopic cylinder, 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 provided with first threaded holes, and the first threaded holes can be connected with an eye bolt or a first pulley; a mounting column is further arranged between the first connecting frame and the second connecting frame, a bottom plate is arranged on the mounting column, a clamp unit for clamping a steel wire rope is arranged on the bottom plate, an I-shaped pulley plate with adjustable upper and lower positions is further arranged between brackets above the clamp unit, and a plurality of pulley rod units with adjustable positions are arranged on the I-shaped pulley plate; the application can test the axial bearing property, creep property, synchronism and friction and abrasion condition of the steel wire rope, and has wide application range.
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 properties and geometric dimensions meeting the requirements together according to a certain rule, the steel wire rope consists of steel wires, a rope core and lubricating grease, the steel wire rope is formed by twisting multiple layers of steel wires into strands, and the steel wire rope is twisted into a spiral rope by taking the rope core as the center; the steel wire rope is widely applied to a plurality of industries such as transportation, construction, mining and the like due to the excellent mechanical properties, so that the requirement of testing the performance of the steel wire rope becomes one of the main important links in the research and development and production processes of the steel wire rope, and the problems of high price, high maintenance cost, difficult installation and the like of the conventional commercial steel wire rope performance test experiment bench exist.
Disclosure of Invention
The invention aims to provide a test device for testing the performance of a steel wire rope.
The invention aims at realizing the technical scheme by the invention, the device comprises a mounting frame, wherein the mounting frame comprises four brackets and a storage plate arranged at the top ends of the four brackets, a first connecting frame is arranged between two brackets at one end of the mounting frame, a second connecting frame is arranged between two brackets 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 on a piston rod of the hydraulic telescopic cylinder, a tension sensor is arranged at one end of the flange plate, first threaded holes are formed in the tension sensor and the second connecting frame, the first threaded holes at two sides are coaxially arranged, and the first threaded holes can be connected with an eye bolt or a first pulley;
The novel steel wire rope clamping device is characterized in that a mounting column is further arranged between the first connecting frame and the second connecting frame, a bottom plate is arranged on the mounting column, a clamp unit used for clamping the steel wire rope is arranged on the bottom plate, an I-shaped pulley plate with adjustable upper and lower positions is further arranged between brackets above the clamp unit, and a plurality of pulley rod units with adjustable positions are arranged on the I-shaped pulley plate.
Further, first sliding grooves along the vertical direction are formed in the side walls of the support, a plurality of bolt holes are formed in the side walls of the support on the two sides of the first sliding grooves at equal intervals, the I-shaped pulley plate slides along the first sliding grooves, and limit pin holes matched with the bolt holes are formed in the four ends of the I-shaped pulley plate;
the I-shaped pulley plate is provided with a second sliding groove, and the pulley rod units can slide along the second sliding groove.
Further, 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;
the side wall of the pulley installation frame of one pulley rod unit in the pulley rod units is also provided with a motor installation box, and a first motor for driving the second pulley is installed in the motor installation box.
Further, the clamp unit comprises a worm gear screw lifter, a servo motor, a pressure sensor and a clamping mechanism;
The worm wheel screw rod lifter and the servo motor are both arranged on the bottom plate, and the power input end of the worm wheel screw rod lifter is connected with the power output shaft of the servo motor;
The top end of the screw rod of the worm wheel screw rod lifter is connected with the bottom end of the pressure sensor; the clamping mechanism used for clamping the steel wire is arranged at the top end of the pressure sensor and comprises a first clamping component and a second clamping component arranged at one end of the first clamping component, and a transmission component is further arranged between the first clamping component and the second clamping component.
Further, the first clamping assembly comprises a mounting box, a first supporting plate, a first guide pillar, a first spring, a first clamping plate, a first mounting 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 and a first limiting block;
The bottom end of the mounting box is fixedly connected with the top end of the pressure sensor, sliding holes are formed in two sides of the upper surface of the mounting box, two first support plates slide up and down along the sliding holes in two sides respectively, a first guide post which is in sliding fit with the first support plates is arranged in the mounting box, a first spring is further sleeved on the first guide post between the first support plates and the bottom of the mounting box, and a first limiting block for limiting the first support plates is further arranged in the mounting box on two sides of the first guide post;
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 at 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 one end of the first pre-tightening extension rod, provided with threads, is in threaded connection with the second threaded hole;
The center department of first extension rod and first pretension extension rod all is provided with the first through-hole that is used for passing the steel wire, all offer the third screw hole that runs through its inside and outside wall on first extension rod and the first pretension extension rod, first fastening screw and third screw hole threaded connection.
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 post 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 posts are mounted on the mounting plate, the clamp plate slides along the second guide posts, a second clamping plate is mounted on the clamp plate, second springs are sleeved on the second guide posts between the clamp plate and the mounting plate, second support plates are fixedly connected to the two sides of the clamp plate, the upper surfaces of the second support plates and the upper surfaces of the clamp plate form an obtuse angle, second mounting holes are formed in the second support plates on one side of the clamp plate, fourth threaded holes are formed in the second support plates on the other side of the clamp plate, one end of a second extension rod is mounted in the second mounting holes, and one end, provided with threads, of the second pre-tightening extension rod is in threaded connection with the fourth threaded holes;
The center of the second extension rod and the center of the second pre-tightening extension rod are respectively provided with a second through hole used for penetrating through the steel wire, the second extension rod and the second pre-tightening extension rod are respectively provided with a fourth threaded hole penetrating through the inner wall and the outer wall of the second extension rod, and the second fastening screw is in threaded connection with the fourth threaded hole.
Further, the transmission assembly comprises a second limiting block, a first driving block, a second driving block, a third guide post, a third driving block, a fourth driving block and a third spring;
The first supporting plate is close to the side wall of the second clamping assembly, the second driving block is arranged at the bottom of the clamp plate, the third guide pillar is in sliding fit with a sliding hole in the side wall of the mounting box, the third driving block is arranged at one end of the third guide pillar, which is positioned in the mounting box, the fourth driving block is arranged at one end of the third guide pillar, which is positioned outside the mounting box, and a third spring is sleeved on the third guide pillar between the third driving block and the side wall of the mounting box;
the upper end of the end face, close to the third driving block, of the first driving block and the lower end of the end face, close to the first driving block, of the third driving block are provided with first guide bevel angles, and the third driving block is driven to move towards one end, close to the second clamping assembly, in the ascending process of the first driving block;
The upper end face of the second driving block is close to one end of the fourth driving block, and one end of the lower end face of the fourth driving block is close to the second driving block, wherein a second guiding bevel angle is arranged at one end of the second driving block, which is far away from the mounting box, and drives the fourth driving block to move upwards in the process of moving;
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, the mounting column is further provided with a sensor mounting frame, and the sensor mounting frame is provided with a displacement sensor for detecting the deformation of the steel wire.
Due to the adoption of the technical scheme, the invention has the following advantages:
1. The application can test the axial bearing property, creep property, synchronism and friction and abrasion condition of the steel wire rope, and has wide application range;
2. According to the application, when the axial bearing property and creep property of the steel wire rope are tested, the steel wire rope is fixed on the eye bolts at two ends, the tension is applied through the hydraulic telescopic rod, the tension is detected through the tension sensor, when the synchronism test is carried out, the eye bolts are replaced by the first pulleys, the steel wire is wound around the two first pulleys and the two second pulleys, the tension is applied through the hydraulic telescopic rod, so that the steel wire clings to the first pulleys and the second pulleys to carry out the synchronism test, the hydraulic telescopic rod and the tension sensor can be used for carrying out the axial bearing property, creep property and synchronism test of the steel wire rope, and the second pulleys can be used for carrying out the synchronism and friction test, so that the structure is compact and the cost is low.
3. When friction experiments are carried out, steel wires are arranged on the first clamping assembly and the second clamping assembly, and after the steel wires on the first clamping assembly are broken in the friction process, the first clamping plate ascends to drive the second clamping assembly to ascend through the transmission assembly, so that the steel wires on the second clamping assembly are in contact with the steel wires between the second rollers to continue friction, and errors caused by replacement of the steel wires on an experiment structure are avoided in the friction test process of the steel wires between the second rollers.
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 view of the structure of the present invention when friction experiments are performed.
Fig. 2 is a schematic structural diagram of the present invention when a synchronicity test is performed.
Fig. 3 is an isometric view of the clamp unit of the present invention.
Fig. 4 is a top view of the clamp 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 present invention at B in fig. 2.
Fig. 7 is a schematic structural view of the i-shaped pulley plate of the present invention.
In the figure: 1-mounting rack; 2-a bracket; 3-placing a plate; 4-a first connection frame; 5-a second connection rack; 6-a hydraulic telescopic cylinder; 7-a flange plate; 8-a tension sensor; 9-a first threaded hole; 10-eye bolts; 11-a first pulley; 12-an I-shaped pulley plate; 13-mounting posts; 14-a bottom plate; 15-a pin hole; 16-limit pin holes; 17-a second chute; 18-I-shaped sliding blocks; 19-an electric telescopic rod; 20-pulley mounting; 21-a second pulley; 22-a motor mounting box; 23-a first motor; 24-worm wheel screw rod lifter; 25-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 rod; 35-a first pretensioned extension bar; 36-a first through hole; 37-a third threaded hole; 38-a first fastening screw; 39-a first limiting block; 40-mounting plates; 41-a clamp plate; 42-a second spring; 43-a second support plate; 44-a second mounting hole; 45-fourth threaded holes; 46-a second extension rod; 47-a second pretensioned extension bar; 48-a second through hole; 49-fourth threaded holes; 50-a second fastening screw; 51-a second limiting block; 52-a first drive block; 53-a second drive block; 54-a third guide post; 55-a third drive block; 56-a fourth drive block; 57-a third spring; 58-sensor mount; 59-a displacement sensor; 60-a first chute; 61-U-shaped limiting pieces; 62-a second guide post; 63-a second clamping plate.
Detailed Description
The invention is further described below with reference to the drawings 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", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, 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 describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present invention will be understood in detail 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 brackets 2 and a storage plate 3 arranged at the top ends of the four brackets 2, a first connecting frame 4 is arranged between the two brackets 2 at one end of the mounting frame 1, a second connecting frame 5 is arranged between the two brackets 2 at the other end of the mounting frame 1, a hydraulic telescopic cylinder 6 is arranged on the first connecting frame 4, a flange 7 is fixedly connected to a piston rod of the hydraulic telescopic cylinder 6, a tension sensor 8 is arranged at one end of the flange 7, first threaded holes 9 are formed in the tension sensor 8 and the second connecting frame 4, the first threaded holes 9 at two sides are coaxially arranged, and the first threaded holes 9 can be connected with a lifting bolt 10 or a first pulley 11;
The mounting column 13 is further arranged between the first connecting frame 4 and the second connecting frame 5, the bottom plate 14 is arranged on the mounting column 13, the clamp unit for clamping the steel wire rope is arranged on the bottom plate 14, the I-shaped pulley plate 12 with adjustable upper and lower positions is further arranged between the brackets 2 above the clamp unit, and a plurality of pulley rod units with adjustable positions are arranged on the I-shaped pulley plate 12.
In the embodiment of the invention, two eye bolts 10 are fixed on first threaded holes 9 on two sides, two ends of a steel wire are fixedly connected on the two eye bolts 10, tension is applied through a hydraulic telescopic cylinder 6, tension is controlled by a tension sensor 8, the elongation of the steel wire rope is accurately obtained by a displacement sensor, the axial bearing characteristic experiment of the steel wire is realized, and meanwhile, the creep characteristic experiment of the steel wire can also be realized by continuously applying tension through the hydraulic telescopic cylinder 6; in the embodiment of the invention, the eye bolt 10 is replaced by a first pulley 11, an annular steel wire is sleeved between the two first pulleys 11 and a second pulley 21 of the two pulley rod units, the annular steel wire is tightly attached to the first pulley 11 and the second pulley 21 by applying tension through a hydraulic telescopic cylinder 6, the first pulley 11 and the second pulley 21 are driven to rotate, and different pulley rotating speeds can be measured by utilizing angular speed sensors (not shown in the figure) on the first pulley 11 and the second pulley 21, so that a pulley synchronism experiment under the transmission of the steel wire rope is realized; in the present example, an annular steel wire is sleeved between the second pulleys 21 of the two pulley lever units, and the other steel wire is fixed to the jig unit, so that the steel wire on the jig unit is brought into contact with the annular steel wire to perform a friction experiment of the steel wire.
As an embodiment of the present invention, the side walls of the bracket 2 are provided with first sliding grooves 60 along the vertical direction, the side walls of the bracket 2 on 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 provided with limit pin holes 16 matched with the bolt holes 15;
The I-shaped pulley plate 12 is provided with a second chute 17, and a plurality of pulley rod units can slide along the second chute 17.
In the embodiment of the present invention, the i-shaped pulley plate 12 can slide up and down in the first chute 60, the position of the i-shaped pulley plate 12 is adjusted up and down by matching the bolt holes 15, the limit pin holes 16 and bolts (not shown in the figure), and a plurality of pulley rod units can slide in the second chute 17, and when the pulley rod units are adjusted to the positions required for experiments, the pulley rod units are limited by the U-shaped limiting members 61.
As an embodiment of the invention, the pulley rod 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 arranged below the I-shaped sliding block 18, a pulley mounting frame 20 is arranged at the telescopic end of the electric telescopic rod 19, and a second pulley 21 is arranged on the pulley mounting frame 20;
a motor mounting box 22 is also mounted on the side wall of the pulley mounting frame 20 of one pulley rod unit among the plurality of pulley rod 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, an annular steel wire is sleeved on two second pulleys 21, and a first motor 23 is started to drive the steel wire to carry out circular motion and friction with the steel wire on the clamp; when the 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 rotation speeds of the different pulleys can be measured by using the 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 fixture unit includes a worm screw lifter 24, a servo motor 25, a pressure sensor 26, and a clamping mechanism;
the worm wheel screw rod lifter 24 and the servo motor 25 are both arranged on the bottom plate 14, and the power input end of the worm wheel screw rod lifter 24 is connected with the power output shaft of the servo motor 25;
the top end of the screw of the worm wheel screw lifter 24 is connected with the bottom end of the pressure sensor 26; the 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 component and a second clamping component installed at one end of the first clamping component, and a transmission component is further arranged between the first clamping component and the second clamping component.
In the embodiment of the invention, the worm wheel screw rod lifter 24 is driven to move by the servo motor 25, the worm wheel screw rod lifter 24 drives the pressure sensor 26 and the clamping mechanism to lift up and down, in the friction experiment process, the steel wire on the first clamping assembly is arranged above the steel wire on the second clamping assembly, the steel wire arranged on the first clamping assembly contacts and rubs with the annular steel wire between the two second pulleys 21, after the steel wire on the first clamping assembly breaks, the first clamping assembly drives the second clamping assembly to move up by the transmission assembly, the steel wire on the second clamping assembly contacts with the annular steel wire to continue the friction experiment, the pressure sensor detects the contact pressure between the steel wires, and meanwhile, the screw rod is rotated in advance during the installation of the elevator, so that the clamp can rotate by a certain angle. An angle scale (not shown in the figure) is carved or painted on the round hole surface at the upper end of the hoister and is used as a reference for the rotation angle of the clamp. Therefore, two wires in the friction experiment can be rubbed at a certain angle, and the experiment is enriched.
As an embodiment of the present invention, the first clamping assembly includes a mounting box 27, a first support 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 stopper 39;
The bottom end of the mounting 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 mounting box 27, two first support plates 28 slide up and down along the sliding holes in two sides respectively, a first guide post 29 which is in sliding fit with the first support plates 28 is mounted in the mounting box 27, a first spring 30 is sleeved on the first guide post 29 between the first support plates 28 and the bottom of the mounting box 27, and a first limiting block 39 for limiting the first support plates 28 is mounted in the mounting box 27 on two sides of the first guide post 29;
The two side walls of the mounting box 27 are fixedly connected with first clamping plates 31, the upper surface of the first clamping plates 31 and the upper surface of the mounting box 27 are arranged at an obtuse angle, a first mounting hole 32 is formed in the first clamping plate 31 on one side of the mounting box 27, a second threaded hole 33 is formed in the first clamping plate 31 on the other side of the mounting box 27, one end of a first extension rod 34 is mounted in the first mounting hole 32, and one end of a first pre-tightening extension rod 35 provided with threads is in threaded connection with the second threaded hole 33;
The centers of the first extension rod 34 and the first pre-tightening extension rod 35 are respectively provided with a first through hole 36 for penetrating through a steel wire, the first extension rod 34 and the first pre-tightening extension rod 35 are respectively provided with a third threaded hole 37 penetrating through the inner wall and the outer wall of the first extension rod 34 and the first pre-tightening extension rod 35, and the first fastening screw 38 is in threaded connection with the third threaded hole 37.
In the embodiment of the invention, when friction test is required, two ends of the 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 rod 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 utilizing a torque wrench, the first clamping plate 31 is driven to descend in the tightening process of the steel wire, and when the lower surface of the first clamping plate 31 is contacted with the first limiting block 39, the steel wire is fixed.
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 pre-tightening extension rod 47, a second through hole 48, a fourth threaded hole 49, a second fastening screw 50, a second guide post 62, and 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 posts 62, a second clamping plate 63 is mounted on the clamp plate 41, second springs 42 are sleeved on the second guide posts 62 between the clamp plate 41 and the mounting plate 40, second support plates 43 are fixedly connected to two sides of the clamp plate 41, the upper surface of the second support plates 43 and the upper surface of the clamp plate 41 form an obtuse angle, a second mounting hole 44 is formed in the second support plate 43 on one side of the clamp plate 41, a fourth threaded hole 45 is formed in the second support plate 43 on the other side of the clamp plate 41, one end of the second extension rod 46 is mounted in the second mounting hole 44, and one threaded end 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 respectively provided with a second through hole 48 for penetrating through the steel wire, the second extension rod 46 and the second pre-tightening extension rod 33 are respectively provided with a fourth threaded hole 49 penetrating through the inner wall and the outer wall of the second extension rod 46 and the second pre-tightening extension rod 33, and the second fastening screw 50 is in threaded connection with the fourth threaded hole 49.
In the example of the present invention, when a 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 pretensioning extension rod 47, both ends of the steel wire are fixed by the second fastening screw 50, and the second fastening screw 50 is screwed to tighten the steel wire.
As an embodiment of the present invention, the transmission assembly includes a second limiting block 51, a first driving block 52, a second driving block 53, a third guide post 54, a third driving block 55, a fourth driving block 56, and a third spring 57;
The first supporting plate 28 is provided with a first driving block 52 near the side wall of the second clamping assembly, the bottom of the clamp plate 41 is provided with a second driving block 53, the third guide post 54 is in sliding fit with a sliding hole on the side wall of the mounting box 27, one end of the third guide post 54 positioned in the mounting box 27 is provided with a third driving block 55, one end of the third guide post 54 positioned outside the mounting box 27 is provided with a fourth driving block 56, and a third spring 57 is sleeved on the third guide post 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, which is close to the third driving block 55, and the lower end of the end surface of the third driving block 55, which is close to the first driving block 52, are both provided with a first guiding bevel angle, and the third driving block 55 is driven to move towards one end, which is close to the second clamping assembly, in the upward process of the first driving block 52;
A second guiding bevel angle is arranged at one end of the upper end surface of the second driving block 53, which is close to the fourth driving block 56, and at one end of the lower end surface of the fourth driving block 56, which is close to the second driving block 53, and the fourth driving block 56 is driven to move upwards in the process of moving towards one end far away from the mounting box 27;
a second limiting block 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 at 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 pulley 21, so that the friction experiment is continued; when the next friction test is performed, the steel wire is arranged on the first clamping assembly, the first clamping plate 31 and the first driving block 52 move downwards, 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 are reset under the action of the second spring; in the embodiment of the present invention, a limiting boss is disposed on the outer wall of the third guide post 54 to prevent the third guide post 54 from rotating during the sliding process; 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 in the friction process.
As an embodiment of the present invention, a sensor mounting frame 58 is further mounted on the mounting post 13, and a displacement sensor 59 for detecting deformation of the steel wire is mounted on the sensor mounting frame 58.
In the present example, the elongation of the wire rope is obtained by the displacement sensor 59 when the experiment of the axial load characteristics of the wire is performed.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.
Claims (5)
1. The utility model provides a test device for testing wire rope performance, includes mounting bracket (1), mounting bracket (1) include four support (2) and install put thing board (3) on four support (2) tops, a serial communication port, install first link (4) between two support (2) of mounting bracket (1) one end, install second link (5) between two support (2) of mounting bracket (1) other end, install hydraulic telescoping cylinder (6) on first link (4), the rigid coupling has ring flange (7) on the piston rod of hydraulic telescoping cylinder (6), tension sensor (8) are installed to one end of ring flange (7), first screw hole (9) have all been seted up on tension sensor (8) and second link (4), first screw hole (9) coaxial line setting of both sides, first screw hole (9) can be connected with lifting bolt (10) or first pulley (11);
a mounting column (13) is further arranged between the first connecting frame (4) and the second connecting frame (5), a bottom plate (14) is arranged on the mounting column (13), a clamp unit for clamping a steel wire rope is arranged on the bottom plate (14), an I-shaped pulley plate (12) with adjustable upper and lower positions is further arranged between the brackets (2) above the clamp unit, and a plurality of pulley rod units with adjustable positions are arranged on the I-shaped pulley plate (12);
The clamp unit comprises a worm gear screw lifter (24), a servo motor (25), a pressure sensor (26) and a clamping mechanism;
the worm wheel screw rod lifter (24) and the servo motor (25) are both arranged on the bottom plate (14), and the power input end of the worm wheel screw rod lifter (24) is connected with the power output shaft of the servo motor (25);
The top end of a screw rod of the worm wheel screw rod lifter (24) is connected with the bottom end of the pressure sensor (26); the top end of the pressure sensor (26) is provided with a clamping mechanism for clamping the steel wire, the clamping mechanism comprises a first clamping component and a second clamping component which is arranged at one end of the first clamping component, and a transmission component is further arranged between the first clamping component and the second clamping component;
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 of the installation box (27) is fixedly connected with the top of the pressure sensor (12), sliding holes are formed in two sides of the upper surface of the installation box (27), two first support plates (28) slide up and down along the sliding holes in two sides respectively, a first guide post (29) which is 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 post (29) between the first support plates (28) and the bottom of the installation box (27), and a first limiting block (39) which limits the first support plates (28) is further installed in the installation box (27) on two sides of the first guide post (29);
The two side walls of the installation box (27) are fixedly connected with first clamping plates (31), the upper surface of the first clamping plates (31) and the upper surface of the installation box (27) are arranged at an obtuse angle, a first installation hole (32) is formed in the first clamping plates (31) on one side of the installation box (27), a second threaded hole (33) is formed in the first clamping plates (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 centers of the first extension rod (34) and the first pre-tightening extension rod (35) are respectively provided with a first through hole (36) for penetrating through a steel wire, the first extension rod (34) and the first pre-tightening extension rod (35) are respectively provided with a third threaded hole (37) penetrating through the inner wall and the outer wall of the first extension rod, and the first fastening screw (38) is in threaded connection with the third threaded hole (37);
The first clamping assembly comprises a mounting plate (40), a clamp plate (41), a second spring (42), a second supporting 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), a plurality of second guide posts (62) are mounted on the mounting plate (40), the clamp plate (41) slides along the second guide posts (62), a second clamping plate (63) is mounted on the clamp plate (41), second springs (42) are sleeved on the second guide posts (62) between the clamp plate (41) and the mounting plate (40), second support plates (43) are fixedly connected to two sides of the clamp plate (41), an obtuse angle is formed between the upper surface of the second support plates (43) and the upper surface of the clamp plate (41), a second mounting hole (44) is formed in the second support plate (43) on one side of the clamp plate (41), a fourth threaded hole (45) is formed in the second support plate (43) on the other side of the clamp plate (41), one end of the second extension rod (46) is mounted in the second mounting hole (44), and the second pre-tightening extension rod (47) is provided 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 respectively provided with a second through hole (48) for penetrating through the steel wire, the second extension rod (46) and the second pre-tightening extension rod (33) are respectively provided with a fourth threaded hole (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 hole (49).
2. The test device for testing the performance of the steel wire rope according to claim 1, wherein first sliding grooves (60) along the vertical direction are formed in the side walls of the support (2), a plurality of bolt holes (15) are formed in the side walls of the support (2) on the two sides of the first sliding grooves (60) at equal intervals, the I-shaped pulley plate (12) slides along the first sliding grooves (60), and limit pin holes (16) matched with the bolt holes (15) are formed in the four ends of the I-shaped pulley plate (12);
A second chute (17) is formed in the I-shaped pulley plate (12), and a plurality of pulley rod units can slide along the second chute (17).
3. A test device for testing the performance of a steel wire rope according to claim 2, wherein the pulley rod unit comprises an i-shaped slide 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 arranged below the I-shaped sliding block (18), a pulley mounting frame (20) is arranged at the telescopic end of the electric telescopic rod (19), and a second pulley (21) is arranged on the pulley mounting frame (20);
A motor mounting box (22) is further mounted on the side wall of the pulley mounting frame (20) of one pulley rod unit of the pulley rod units, and a first motor (23) for driving the second pulley (21) is mounted in the motor mounting box (22).
4. A test device for testing the performance of a steel wire rope according to claim 1, wherein the transmission assembly comprises a second limiting block (51), a first driving block (52), a second driving block (53), a third guide post (54), a third driving block (55), a fourth driving block (56) and a third spring (57);
The first supporting plate (28) is close to the side wall of the second clamping assembly, a first driving block (52) is arranged on the side wall of the second clamping assembly, a second driving block (53) is arranged 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 arranged at one end of the third guide pillar (54) positioned in the mounting box (27), a fourth driving block (56) is arranged at one end of the third guide pillar (54) positioned outside the mounting box (27), and a third spring (57) is 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, close to the third driving block (55), of the first driving block (52) and the lower end of the end face, close to the first driving block (52), of the third driving block (55) are provided with first guide oblique angles, 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 formed at one end, close to the fourth driving block (56), of the upper end face of the second driving block (53) and one end, close to the second driving block (53), of the lower end face of the fourth driving block (56), and the fourth driving block (56) is driven to move upwards in the process of moving towards one end, far from the mounting box (27), of the second driving block (53);
And a second limiting block (51) for limiting the mounting plate (40) and the second driving block (53) is arranged on the mounting plate (40) below the second driving block (53).
5. A test device for testing the performance of a steel wire rope according to claim 1, characterized in that the mounting post (13) is further provided with a sensor mounting bracket (58), and the sensor mounting bracket (58) is provided with a displacement sensor (59) for detecting the deformation of the steel wire.
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