CN214472438U - Rigging root bending fatigue performance test equipment - Google Patents
Rigging root bending fatigue performance test equipment Download PDFInfo
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- CN214472438U CN214472438U CN202120476923.XU CN202120476923U CN214472438U CN 214472438 U CN214472438 U CN 214472438U CN 202120476923 U CN202120476923 U CN 202120476923U CN 214472438 U CN214472438 U CN 214472438U
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- 238000005452 bending Methods 0.000 title claims abstract description 21
- 238000011056 performance test Methods 0.000 title description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 106
- 239000010959 steel Substances 0.000 claims abstract description 106
- 238000012360 testing method Methods 0.000 claims abstract description 36
- 230000000149 penetrating effect Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 description 15
- 238000002474 experimental method Methods 0.000 description 10
- 238000013016 damping Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model belongs to bending fatigue capability test field especially relates to a rigging root bending fatigue capability test equipment. A tension driving support arm, a steel rope support arm A, a steel rope support arm B and a rotation driving support arm are arranged between a U-shaped beam A and a U-shaped beam B of the equipment main body support, the tension driving support arm and the rotation driving support arm are vertically arranged at two ends of the equipment main body support, the tension driving support arm and the upper end and the lower end of the rotation driving support arm are respectively fixedly connected with the U-shaped beam A, U type beam B through fixing pins, the steel rope support arm A and the steel rope support arm B are oppositely arranged up and down and are positioned at one side close to the rotation driving support arm, and a steel rope is arranged between the steel rope support arm A and the steel rope support arm B in a penetrating mode; the rotating end cable joint at one end of the test rigging is fixed in the rotating end cable joint fixing sleeve, and the stretching end cable joint at the other end of the test rigging is fixed at one end of the tension hydraulic cylinder, so that independent control of bending and stretching load of the test rigging is realized.
Description
Technical Field
The utility model belongs to bending fatigue capability test field especially relates to a rigging root bending fatigue capability test equipment.
Background
A special rigging consists of steel ropes and rope knots which are connected together by a pressing or casting method and bears high-speed impact load in the normal service process. Due to the impact inertia effect, the steel ropes at the root parts of the cable joints bear high-speed reciprocating bending load history in the service process, and the service mechanical property and the safety of the cable are determined to a certain extent for a dangerous area in the service process of the cable. At the present stage, the service examination equipment of the system-level rigging has a complex structure, high experiment cost and long experiment period, and service characteristics of a pressing/casting affected area of the rigging root are difficult to decouple and quantitatively analyze. The traditional active steel rope impact test method cannot meet the working conditions of large load and high-speed bending service of a rigging root area.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a rigging root bending fatigue performance test equipment, this method cable festival rotary motion and steel cable tension damping independent control, the rotary driving power is little, and tension damping displacement is little, and equipment structure is simple, easily controls.
The utility model provides a technical scheme that its technical problem adopted is:
a rigging root bending fatigue performance testing apparatus, the apparatus comprising: equipment main part support, tension drive support arm, tension pneumatic cylinder, tensile end cable festival, steel cable support arm A, rotary drive support arm, the fixed cover of rotary end cable festival, steel cable support arm B, concrete structure is as follows:
the U-shaped beam A and the U-shaped beam B of the equipment main body support are arranged in parallel up and down, a tension driving support arm, a steel rope support arm A, a steel rope support arm B and a rotation driving support arm are arranged between the U-shaped beam A and the U-shaped beam B, the tension driving support arm and the rotation driving support arm are vertically arranged at two end parts of the equipment main body support, the upper end and the lower end of the tension driving support arm and the upper end and the lower end of the rotation driving support arm are respectively and fixedly connected with the U-shaped beam A, U type beam B through fixing pins, the steel rope support arm A and the steel rope support arm B are arranged in a vertical opposite mode and are positioned at one side close to the rotation driving support arm, and a steel rope is arranged between the steel rope support arm A and the steel rope support arm B in a penetrating mode;
the testing rigging consists of a stretching end cable joint, a rotating end cable joint and a steel rope, wherein the steel rope is horizontally arranged, the rotating end cable joint is installed at one end of the steel rope, and the stretching end cable joint is installed at the other end of the steel rope; the rotating end socket of one end of the test rigging is fixed in the rotating end socket fixing sleeve, and the stretching end socket of the other end of the test rigging is fixed at one end of the tension hydraulic cylinder.
According to the device for testing the bending fatigue property of the rigging root, a rotating end cable joint at one end of a test rigging is fixed in a rotating end cable joint fixing sleeve through a conical fastening plate, the rotating end cable joint fixing sleeve is of a block structure, long grooves and short grooves are formed in two ends of the block structure, a support column is arranged between the long grooves and the short grooves, rotating center supporting pins are symmetrically arranged on the outer sides of the short grooves at one end of the block structure, and the rotating end cable joint fixing sleeve is respectively arranged on one rotating driving supporting arm in a penetrating mode through the two rotating center supporting pins; one end of the steel rope passes through the short groove and the horizontal through hole on the pillar and then extends into the long groove and is connected with the rotating end rope knot, a conical fastening plate is arranged between the connecting part of the rotating end rope knot and the steel rope and the horizontal through hole of the pillar, and the rotating end rope knot is fixed in the long groove in a penetrating way through a rope knot fixing pin; the drive connecting rod of the pneumatic rotary drive cylinder penetrates through the long groove, and the drive connecting rod penetrates through the drive connecting rod fixing pin and is fixed in the long groove.
Rigging root bending fatigue performance test equipment, steel cable support arm A, steel cable support arm B all adopt V type structure, steel cable support arm A's opening part passes through fixed pin and U type crossbeam A fixed connection, steel cable support arm B's opening part passes through fixed pin and U type crossbeam B fixed connection, steel cable support arm A's closed angle portion installs steel cable support pulley A, steel cable support arm B's closed angle portion installs steel cable support pulley B, steel cable support pulley A corresponds from top to bottom with steel cable support pulley B, the steel cable is worn to locate between steel cable support pulley A and the steel cable support pulley B.
The using method of the rigging root bending fatigue performance testing equipment comprises the following steps:
1) selecting a test rigging, wherein one end of the test rigging is fixed in a rope socket fixing sleeve at the rotating end, a rope socket fixing pin is placed, a conical fastening plate is compacted, and the other end of the test rigging is fixed on a tension hydraulic cylinder;
2) driving a tension hydraulic cylinder to make the steel rope perform tension;
3) when the tension is stable, the pneumatic rotation driving cylinder drives the rotation end cable joint fixing sleeve to drive the rotation end cable joint to rotate, in the rotation process, a rotation angle, a rotation angular speed, the tension and a tension change speed are set based on the service working condition, one experiment is completed, and the tension hydraulic cylinder is unloaded;
4) and (3) repeating the steps 2) -3) after the experiment is finished, reading the experiment times when the steel rope is broken, or stopping the rotation process of the rope knot at the rotation end after the target circulation times are reached, performing a breaking experiment on the test rigging through the tension hydraulic cylinder, and reading a breaking force value.
According to the using method of the device for testing the bending fatigue property of the root of the rigging, two ends of the testing rigging are fixed in the device, the pneumatic rotary driving cylinder drives the rotary end cable joint to rotate around the rotary center supporting pin through the driving connecting rod fixing pin and the rotary end cable joint fixing sleeve, and the tension hydraulic cylinder synchronously controls the tension of the tensile end cable joint while the rotary end cable joint rotates.
The utility model has the advantages and beneficial effects that:
1) the utility model adopts the integral structure design of functional parts, supporting arms, fixing pins and supports, the cable joint is a rigid structure relative to the steel rope, and the self-locking conical fastening of the cable joint is adopted, so that the cable joint is easy to fix and the reciprocating rotary motion of the cable joint is easy to realize;
2) when the cable joint of the utility model rotates rapidly, the displacement change of the steel cable is small, and the cable joint is easy to control the tension rapidly and hydraulically; meanwhile, the passive tension regulation and control of the cable joint tension (the movement of the cable joint rotation center) can be realized by regulating the cable joint rotation center;
3) the utility model adopts the passive bending test method of the cable joint active rotation driving steel cable, the steel cable tension is mostly born by the bearing of the rotation center in the rotation process of the cable joint, the thrust required by the rotation is small, and the cable joint is easy to be driven quickly;
4) the utility model discloses crooked and tensile load independent control of test rigging, it is few to interfere each other.
Drawings
Fig. 1 is a structural design diagram of the device of the present invention.
Fig. 2 is an enlarged perspective view of fig. 1 at a.
The reference numbers in the figures are:
1. equipment main body support, 2, a fixing pin, 3, a tension driving supporting arm, 4, a tension hydraulic cylinder, 5, a stretching end cable joint, 6, a steel cable, 7, a steel cable supporting arm A, 8, a steel cable supporting pulley A, 9, a rotation driving supporting arm, 10, a rotation center supporting pin, 11, a rotation end cable joint fixing sleeve, 12, a cable joint fixing pin, 13, a driving connecting rod fixing pin, 14, a pneumatic rotation driving cylinder, 15, a rotation end cable joint, 16, a conical fastening plate, 17, a U-shaped cross beam A, 18, a U-shaped cross beam B, 19, a steel cable supporting arm B, 20, a steel cable supporting pulley B, 21, a long groove, 22 a short groove and 23 pillars.
Detailed Description
The design principle and the application method of the present invention will be explained with reference to the device structure design drawing.
As shown in fig. 1-2, the utility model discloses rigging root bending fatigue performance test equipment mainly includes: the device comprises a device body support 1, a fixing pin 2, a tension driving supporting arm 3, a tension hydraulic cylinder 4, a stretching end cable joint 5, a steel cable 6, a steel cable supporting arm A7, a steel cable supporting pulley A8, a rotation driving supporting arm 9, a rotation center supporting pin 10, a rotation end cable joint fixing sleeve 11, a cable joint fixing pin 12, a driving connecting rod fixing pin 13, a pneumatic rotation driving cylinder 14, a rotation end cable joint 15, a conical fastening plate 16, a steel cable supporting arm B19, a steel cable supporting pulley B20 and the like, and the specific structure is as follows:
the device comprises an equipment main body support 1, a U-shaped beam A17 and a U-shaped beam B18 of the equipment main body support 1 are arranged in parallel up and down relatively, a tension driving support arm 3, a steel rope support arm A7, a steel rope support arm B19 and a rotation driving support arm 9 are arranged between the U-shaped beam A17 and the U-shaped beam B18, the tension driving support arm 3 and the rotation driving support arm 9 are vertically arranged at two ends of the equipment main body support 1, and the upper end and the lower end of the tension driving support arm 3 and the upper end and the lower end of the rotation driving support arm 9 are respectively fixedly connected with the U-shaped beam A17 and the U-shaped beam B18 through fixing pins 2; the steel rope support arm A7 and the steel rope support arm B19 are arranged oppositely up and down and are positioned at one side close to the rotary driving support arm 9, and the steel rope 6 is arranged between the steel rope support arm A7 and the steel rope support arm B19 in a penetrating way; the steel rope supporting arm 7 and the steel rope supporting arm B19 both adopt V-shaped structures, the opening part of the steel rope supporting arm A7 is fixedly connected with the U-shaped cross beam A17 through a fixing pin, the opening part of the steel rope supporting arm B19 is fixedly connected with the U-shaped cross beam B18 through a fixing pin, the sharp corner part of the steel rope supporting arm A7 is provided with a steel rope supporting pulley A8, the sharp corner part of the steel rope supporting arm B19 is provided with a steel rope supporting pulley B20, and the steel rope supporting pulley A8 is vertically corresponding to the steel rope supporting pulley B20.
The test rigging is composed of a stretching end cable joint 5, a rotating end cable joint 15 and a steel cable 6, wherein the steel cable 6 is horizontally arranged, the rotating end cable joint 15 is installed at one end of the steel cable 6, and the stretching end cable joint 5 is installed at the other end of the steel cable 6. A rotating end socket 15 at one end of the test rigging is fixed in the rotating end socket fixing sleeve 11 through a conical fastening plate 16, and a stretching end socket 5 at the other end of the test rigging is fixed at one end of the tension hydraulic cylinder 4; the steel rope 6 is arranged between the steel rope supporting pulley A8 and the steel rope supporting pulley B20 in a penetrating mode, and in the experimental process, the steel rope supporting pulley A8 and the steel rope supporting pulley B20 serve as a protection and supporting structure of the steel rope 6.
The rotating end cable joint fixing sleeve 11 is of a block structure, a long groove 21 and a short groove 22 are formed in two ends of the block structure, a support column 23 is arranged between the long groove 21 and the short groove 22, rotating center support pins 10 are symmetrically arranged on the outer side of the short groove 22 at one end of the block structure, and the rotating end cable joint fixing sleeve 11 is respectively arranged on one rotating driving support arm 9 in a penetrating mode through the two rotating center support pins 10; one end of the steel rope 6 passes through the short groove 22 and the horizontal through hole on the pillar 23 and then extends into the long groove 21 and is connected with the rotating end cable joint 15, a conical fastening plate 16 is arranged between the connecting part of the rotating end cable joint 15 and the steel rope 6 and the horizontal through hole of the pillar 23, and the rotating end cable joint 15 is fixed in the long groove 21 in a penetrating way through a cable joint fixing pin 12; the drive link of the pneumatic rotary drive cylinder 14 is inserted through the long groove 21, and the drive link is fixed to the long groove 21 through the drive link fixing pin 13.
As shown in fig. 1-2, the working principle of the present invention is:
two ends of the test rigging are fixed in the equipment, a pneumatic rotation driving cylinder 14 drives a rotation end cable joint 15 to rotate around a rotation center supporting pin 10 through a driving connecting rod fixing pin 13 and a rotation end cable joint fixing sleeve 11, and a tension hydraulic cylinder 4 synchronously controls the tension of a stretching end cable joint 5 while the rotation end cable joint 15 rotates. Through the actions, the purpose that the rotating end cable joint 15 rotates at a high speed relative to the steel rope under a large load condition is achieved.
As shown in fig. 1-2, the utility model discloses a use method of equipment is:
1) selecting a test rigging (3m), wherein one end of the test rigging is fixed in a rotating end rope knot fixing sleeve 11, a rope knot fixing pin 12 is placed, a conical fastening plate 16 is compacted, and the other end of the test rigging is fixed on a tension hydraulic cylinder 4;
2) driving a tension hydraulic cylinder 4 to prefabricate a certain tension on a steel rope 6, and stabilizing the tension;
3) the pneumatic rotation driving cylinder 14 is used for driving the rotation end cable joint fixing sleeve 11 to drive the rotation end cable joint 15 to rotate, in the rotation process, a rotation angle, a rotation angular speed, a tension and a tension change speed are set based on a service working condition, an experiment is completed, and the tension hydraulic cylinder 4 is unloaded;
4) and (5) repeating the steps 3) -4) after the experiment is finished, reading the experiment times when the steel rope 6 is broken, or stopping the cable joint rotating process after the target circulation times are reached, performing a breaking experiment on the test rigging through the tension hydraulic cylinder 4, and reading a breaking force value.
The result shows, in order to satisfy the big load of cable festival root-quick crooked operating mode of being in service, the utility model discloses an active rotatory loading mode changes the fixed steel cable bending mode of former cable festival into the rotatory mode of the fixed cable festival of steel cable, and rotatory and support relevant structure is fixed at equipment main part support 1 through fixed pin 2 respectively by tension drive support arm 3, rotation drive support arm 9 and steel cable support arm A7. The rotation action of the cable joint and the tension damping of the steel rope are independently controlled, the rotation driving force is small, the tension damping displacement is small, and the device is simple in structure and easy to control.
Claims (3)
1. A rigging root bending fatigue performance testing apparatus, comprising: equipment main part support, tension drive support arm, tension pneumatic cylinder, tensile end cable festival, steel cable support arm A, rotary drive support arm, the fixed cover of rotary end cable festival, steel cable support arm B, concrete structure is as follows:
the U-shaped beam A and the U-shaped beam B of the equipment main body support are arranged in parallel up and down, a tension driving support arm, a steel rope support arm A, a steel rope support arm B and a rotation driving support arm are arranged between the U-shaped beam A and the U-shaped beam B, the tension driving support arm and the rotation driving support arm are vertically arranged at two end parts of the equipment main body support, the upper end and the lower end of the tension driving support arm and the upper end and the lower end of the rotation driving support arm are respectively and fixedly connected with the U-shaped beam A, U type beam B through fixing pins, the steel rope support arm A and the steel rope support arm B are arranged in a vertical opposite mode and are positioned at one side close to the rotation driving support arm, and a steel rope is arranged between the steel rope support arm A and the steel rope support arm B in a penetrating mode;
the testing rigging consists of a stretching end cable joint, a rotating end cable joint and a steel rope, wherein the steel rope is horizontally arranged, the rotating end cable joint is installed at one end of the steel rope, and the stretching end cable joint is installed at the other end of the steel rope; the rotating end socket of one end of the test rigging is fixed in the rotating end socket fixing sleeve, and the stretching end socket of the other end of the test rigging is fixed at one end of the tension hydraulic cylinder.
2. The rigging root bending fatigue performance testing equipment according to claim 1, wherein a rotating end socket at one end of the test rigging is fixed in a rotating end socket fixing sleeve through a conical fastening plate, the rotating end socket fixing sleeve is a block structure, a long groove and a short groove are formed at two ends of the block structure, a support column is arranged between the long groove and the short groove, a rotating center support pin is symmetrically arranged outside the short groove at one end of the block structure, and the rotating end socket fixing sleeve is respectively arranged on one rotating driving support arm through two rotating center support pins; one end of the steel rope passes through the short groove and the horizontal through hole on the pillar and then extends into the long groove and is connected with the rotating end rope knot, a conical fastening plate is arranged between the connecting part of the rotating end rope knot and the steel rope and the horizontal through hole of the pillar, and the rotating end rope knot is fixed in the long groove in a penetrating way through a rope knot fixing pin; the drive connecting rod of the pneumatic rotary drive cylinder penetrates through the long groove, and the drive connecting rod penetrates through the drive connecting rod fixing pin and is fixed in the long groove.
3. The apparatus for testing bending fatigue property of a root of a rigging according to claim 1, wherein the cable support arm a and the cable support arm B are both of a V-shaped structure, an opening portion of the cable support arm a is fixedly connected to the U-shaped beam a by a fixing pin, an opening portion of the cable support arm B is fixedly connected to the U-shaped beam B by a fixing pin, a cable support pulley a is installed at a sharp corner portion of the cable support arm a, a cable support pulley B is installed at a sharp corner portion of the cable support arm B, the cable support pulley a and the cable support pulley B are vertically opposite to each other, and a cable is inserted between the cable support pulley a and the cable support pulley B.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120476923.XU CN214472438U (en) | 2021-03-05 | 2021-03-05 | Rigging root bending fatigue performance test equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120476923.XU CN214472438U (en) | 2021-03-05 | 2021-03-05 | Rigging root bending fatigue performance test equipment |
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| CN214472438U true CN214472438U (en) | 2021-10-22 |
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| CN202120476923.XU Active CN214472438U (en) | 2021-03-05 | 2021-03-05 | Rigging root bending fatigue performance test equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088553A (en) * | 2021-11-02 | 2022-02-25 | 中铁大桥局集团有限公司 | Large-tonnage inhaul cable testing device |
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2021
- 2021-03-05 CN CN202120476923.XU patent/CN214472438U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088553A (en) * | 2021-11-02 | 2022-02-25 | 中铁大桥局集团有限公司 | Large-tonnage inhaul cable testing device |
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