CN211784880U - Flexible tensile rope durability testing device - Google Patents
Flexible tensile rope durability testing device Download PDFInfo
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- CN211784880U CN211784880U CN201922272362.7U CN201922272362U CN211784880U CN 211784880 U CN211784880 U CN 211784880U CN 201922272362 U CN201922272362 U CN 201922272362U CN 211784880 U CN211784880 U CN 211784880U
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Abstract
A flexible tensile rope durability test device is characterized in that: a rope winding degree simulator and a rope tension simulator which are specially used for simulating the working condition of a steel wire rope are designed, and then a cylinder is used as a power source for pulling the steel wire rope, so that the durability testing device for the flexible tensioned rope is formed in a combined mode. Under the working state, one end of the steel wire rope is fixed on the working end of the air cylinder, the other end of the steel wire rope is fixed on the elastic end of the rope tension simulator, the rope of the steel wire rope is guided by the first guide wheel and then wound on the winding wheel, and then is guided by the second guide wheel, the air cylinder pulls the steel wire rope to move towards one direction during working, and the rope tension simulator pulls the steel wire rope to move towards the other direction, so that the durability of the steel wire rope is tested in an alternating reciprocating mode. The scheme solves the problems of complex structure, poor simulation and poor parameter adjustment flexibility of the conventional testing device.
Description
Technical Field
The utility model relates to an experimental test equipment, in particular to flexible testing arrangement who draws rope durability. The device is specially used for testing the fatigue strength, the service life and other durability performances of flexible tensile ropes such as steel wire ropes.
Background
Flexible tensile ropes such as steel wire ropes are frequently used in the design of various products, and have different requirements on durability such as fatigue strength and service life due to different use occasions and safety requirements.
In the prior art, the opening degree of an inlet guide vane of a centrifugal compressor is controlled in various modes, such as a hydraulic piston + connecting rod structure, a motor drive + rack transmission structure, a motor drive + runner steel wire rope transmission structure and the like. The structure of motor drive and steel wire rope transmission of the rotating wheel adopts a steel wire rope transmission structure, so that the durability of the steel wire rope directly influences the reliability and the service life of the opening degree drive control mechanism of the inlet guide vane of the centrifugal compressor. Therefore, it is necessary to test the durability of the steel wire rope according to the requirement of the opening degree driving control of the inlet guide vane of the centrifugal compressor.
A publication of chinese patent CN203376219U in 1 month and 1 day 2014 issued a new utility model named "steel wire rope durability testing machine". The technical scheme of the patent comprises a speed reducer, a turntable, a movable pulley frame, a movable pulley, a plurality of fixed pulleys, a display, a test load (balance weight) and the like. Although this patent is specifically designed to test the durability of steel cords, it suffers from the following disadvantages: 1. the structure is relatively complex, and the manufacturing cost is high; 2. during testing, the flexibility of adjustable testing parameters such as curvature radius, tension, reciprocating stroke, reciprocating time and the like is poor; 3. the simulation of the opening control working condition of the inlet guide vane of the centrifugal compressor is poor.
In view of this, how to design a flexible tension rope durability test device that not only simple structure, but also can truly simulate centrifugal compressor's import stator aperture control operating mode, and controllability such as curvature radius, receiving pulling force are good moreover is the utility model discloses the subject of research.
Disclosure of Invention
The utility model provides a flexibility is drawn rope durability testing arrangement, its purpose is complicated that current testing arrangement structure will be solved, and the simulation is poor and test parameter adjustment flexibility is poor problem.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a flexible tension rope durability test device comprises a bracket, and is characterized in that: including rope winding simulator, cylinder and rope tension simulator, wherein:
the rope winding degree simulator comprises a seat body, a first guide wheel, a second guide wheel, a winding wheel and a rotating shaft, wherein the seat body is fixedly positioned on the support, the winding wheel is fixedly arranged on the rotating shaft, a groove for winding the steel wire rope is formed in the outer edge of the winding wheel, and the rotating shaft is rotatably supported on the seat body. The first guide wheel is positioned on one side of the winding wheel and is rotatably supported relative to the seat body, and the second guide wheel is positioned on the other side of the winding wheel and is rotatably supported relative to the seat body.
The cylinder is located beside the rope winding simulator and is fixedly installed relative to the support in a positioning mode, and the working end of the cylinder is located beside the first guide wheel.
The rope tension simulator is composed of a main spring, the rope tension simulator is located beside the rope winding degree simulator, one end of the spring is fixed or positioned relative to the support, and the other end of the spring serves as an elastic end of the rope tension simulator.
Under the working state, one end of the steel wire rope to be detected is positioned or fixed on the working end of the cylinder, the rope of the steel wire rope is guided by the first guide wheel, wound by the winding wheel and guided by the second guide wheel in sequence, and the other end of the steel wire rope is positioned or fixed on the elastic end of the rope tension simulator.
The relevant content in the above technical solution is explained as follows:
1. in the above scheme, the rope tension simulator is composed of at least two springs, a pressing plate and a spring seat, wherein the at least two springs are connected in parallel to form a spring group, the spring group is arranged on the spring seat, the pressing plate acts on the moving end of the spring group, and the pressing plate is used as the elastic end of the rope tension simulator.
2. In the above scheme, a group of adjusting cushion blocks is superposed on the working end of the cylinder, and one end of the steel wire rope is positioned or fixedly connected with the working end of the cylinder through the group of adjusting cushion blocks.
3. In the above scheme, the cylinder is a single-acting cylinder or a double-acting cylinder.
4. In the above scheme, including the electrical control box, be equipped with the business turn over gas port on the electrical control box, the cylinder passes through the trachea and is connected with the business turn over gas port of electrical control box.
The utility model discloses a design principle and effect: in order to solve the problems of complex structure, poor simulation and poor flexibility of test parameter adjustment of the conventional test device, the scheme designs a rope winding degree simulator specially used for simulating the working winding degree of a steel wire rope and a rope tension simulator specially used for simulating the tension of the steel wire rope, and then uses an air cylinder as a power source for one direction tension of the steel wire rope to form the flexible tension rope durability test device by combination. Under the working state, one end of the steel wire rope is fixed on the working end of the air cylinder, the other end of the steel wire rope is fixed on the elastic end of the rope tension simulator, the rope of the steel wire rope is guided by the first guide wheel and then wound on the winding wheel, and then is guided by the second guide wheel, the air cylinder pulls the steel wire rope to move towards one direction during working, and the rope tension simulator pulls the steel wire rope to move towards the other direction, so that the durability of the steel wire rope is tested in an alternating reciprocating mode.
Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have following advantage and effect:
1. among the above-mentioned scheme, this scheme compares simple structure with prior art, low in manufacturing cost.
2. In the scheme, the tension of the flexible tension rope can be changed by changing the number or elasticity of the springs, so that the tension can be adjusted.
3. In the scheme, the group of adjusting cushion blocks are arranged on the working end of the air cylinder in a superposed mode, the moving stroke of the flexible tension rope can be changed through increasing or decreasing the adjusting cushion blocks, and stroke adjustment is achieved.
4. In the scheme, the reciprocating time of the test can be changed through the working frequency of the air cylinder, and the period is adjustable.
5. In the scheme, the curvature radius of the steel wire rope can be changed through the diameter change of the first guide wheel, the second guide wheel and the winding wheel, and the winding degree is adjustable.
In a word, the invention designs a set of flexible tension rope reciprocating type durability testing device which has good simulation performance and convenient parameter adjustment and can automatically drive and count, can realize accelerated life test, simulated operation test of data (or phenomenon) acquisition under different working conditions and the like by adjusting corresponding parameters, and provides data support for the durability, the service life and the reliability of the driving control of the inlet guide vane of the centrifugal compressor. The invention can be applied to the durability test of the flexible tension rope in other occasions besides the control of the inlet guide vane of the centrifugal compressor.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the above drawings: 1. an electrical control box; 2. an air tube; 3. a cylinder; 4. adjusting the cushion block; 5. a rope winding simulator; 6. a spring; 7. pressing a plate; 8. a wire rope; 9. a first guide wheel; 10. a second guide wheel; 11. a winding wheel; 12. a rotating shaft; 13. a base body; 14. a spring seat; 15. a support; 16. rope tension simulator.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
example (b): flexible tensile rope durability testing device
As shown in fig. 1, the test apparatus is composed of a bracket 15, a rope winding simulator 5, an air cylinder 3, a rope tension simulator 16, and an electric control box 1 (see fig. 1).
The rope winding degree simulator 5 is composed of a seat body 13, a first guide wheel 9, a second guide wheel 10, a winding wheel 11 and a rotating shaft 12 (see fig. 1), wherein the seat body 13 is fixedly positioned on a bracket 15, the winding wheel 11 is fixedly arranged on the rotating shaft 12, a groove for winding the steel wire rope 8 is arranged on the outer edge of the winding wheel 11, and the rotating shaft 12 is rotatably supported on the seat body 13; the first guide wheel 9 is located on one side of the winding wheel 11 and is rotatably supported with respect to the seat body 13, and the second guide wheel 10 is located on the other side of the winding wheel 11 and is rotatably supported with respect to the seat body 13.
The cylinder 3 is located next to the rope winding simulator 5 and is fixedly positioned relative to the bracket 15, and the working end of the cylinder 3 is located next to the first guide wheel 9 (see fig. 1). The cylinder 3 adopts a one-way acting cylinder. In order to adjust the test stroke, a set of adjusting cushion blocks 4 (see fig. 1) is superimposed on the working end of the cylinder 3.
The rope tension simulator 16 is composed of four springs 6, a pressing plate 7 and a spring seat 14 (see fig. 1). The four springs 6 are connected in parallel to form a spring group, the spring group is arranged on a spring seat 14 and is used as a compression spring, a pressing plate 7 is connected in a sliding mode relative to the spring seat 14 in the compression direction of the springs 6, the pressing plate 7 acts on the moving end of the spring group, and the pressing plate 7 serves as an elastic end of a rope tension simulator 16. The rope tension simulator 16 is positioned beside the rope winding simulator 5, one end of the spring set is fixed or positioned relative to the spring seat 14, the other end of the spring set is in contact with the pressing plate 7, and the pressing plate 7 is used as an elastic end of the rope tension simulator 16.
An air inlet and an air outlet are arranged on the electric control box 1, and the air cylinder 3 is connected with the air inlet and the air outlet of the electric control box 1 through an air pipe 2 (see figure 1). The electric control box 1 is a part dedicated to controlling and detecting the cylinders 3, and the content of the part can adopt the prior art, such as controlling the action of the cylinders 3 (realized by a four-way reversing solenoid valve), counting and displaying the action frequency of the cylinders 3. The air source of the air cylinder 3 during working can be realized by utilizing an on-site air source or by specially arranging an air pump. Since the content of the electrical control box 1 is not the innovative point of the present invention, it can be implemented by adopting the prior art, and is not described in detail herein.
In a working state, one end of a detected steel wire rope 8 is positioned or fixedly connected relative to the working end of the cylinder 3 through a group of adjusting cushion blocks 4, a rope of the steel wire rope 8 is guided by a first guide wheel 9, a winding wheel 11 and a second guide wheel 10 in sequence, and the other end of the steel wire rope 8 is positioned or fixed on an elastic end of a rope tension simulator 16.
Other embodiments and structural changes of the present invention are described below as follows:
1. in the above embodiment, the rope tension simulator 16 is composed of four springs 6, a pressing plate 7, and a spring seat 14. However, the present invention is not limited thereto, and the rope tension simulator 16 may be formed of only one spring 6 without the pressing plate 7 and the spring seat 14. Even with the platen 7 and spring seat 14 configuration, the springs 6 may be comprised of one, two, three, five, or even more in number. As would be understood and accepted by those skilled in the art.
2. In the above embodiment, the cylinder 3 is a single-acting cylinder. However, the present invention is not limited to this, and a double-acting cylinder may be used. As would be understood and accepted by those skilled in the art.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (5)
1. A flexible tensile rope durability test apparatus comprising a bracket (15), characterized in that: comprising a rope winding simulator (5), a cylinder (3) and a rope tension simulator (16), wherein:
the rope winding degree simulator (5) comprises a base body (13), a first guide wheel (9), a second guide wheel (10), a winding wheel (11) and a rotating shaft (12), wherein the base body (13) is fixedly positioned on a support (15), the winding wheel (11) is fixedly arranged on the rotating shaft (12), a groove for winding a steel wire rope (8) is formed in the outer edge of the winding wheel (11), and the rotating shaft (12) is rotatably supported on the base body (13); the first guide wheel (9) is positioned on one side of the winding wheel (11) and is rotatably supported relative to the seat body (13), and the second guide wheel (10) is positioned on the other side of the winding wheel (11) and is rotatably supported relative to the seat body (13);
the cylinder (3) is positioned beside the rope winding simulator (5) and is fixedly positioned relative to the bracket (15), and the working end of the cylinder (3) is positioned beside the first guide wheel (9);
the rope tension simulator (16) is composed of a main spring (6), the rope tension simulator (16) is located beside the rope winding degree simulator (5), one end of the spring (6) is fixed or positioned relative to the support (15), and the other end of the spring (6) is used as an elastic end of the rope tension simulator (16);
in a working state, one end of a detected steel wire rope (8) is positioned or fixed on the working end of the cylinder (3), a rope of the steel wire rope (8) is guided by the first guide wheel (9), wound by the winding wheel (11) and guided by the second guide wheel (10) in sequence, and the other end of the steel wire rope (8) is positioned or fixed on an elastic end of the rope tension simulator (16).
2. The test device of claim 1, wherein: the rope tension simulator (16) is composed of at least two springs (6), a pressing plate (7) and a spring seat (14), wherein the at least two springs (6) are connected in parallel to form a spring set, the spring set is arranged on the spring seat (14), the pressing plate (7) acts on the moving end of the spring set, and the pressing plate (7) serves as the elastic end of the rope tension simulator (16).
3. The test device of claim 1, wherein: the working end of the cylinder (3) is superposed with a group of adjusting cushion blocks (4), and one end of the steel wire rope (8) is positioned or fixedly connected with the working end of the cylinder (3) through the group of adjusting cushion blocks (4).
4. The test device of claim 1, wherein: the air cylinder (3) is a one-way acting air cylinder or a two-way acting air cylinder.
5. The test device of claim 1, wherein: the air cylinder is characterized by comprising an electrical control box (1), wherein an air inlet and an air outlet are formed in the electrical control box (1), and the air cylinder (3) is connected with the air inlet and the air outlet of the electrical control box (1) through an air pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922272362.7U CN211784880U (en) | 2019-12-17 | 2019-12-17 | Flexible tensile rope durability testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922272362.7U CN211784880U (en) | 2019-12-17 | 2019-12-17 | Flexible tensile rope durability testing device |
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| CN211784880U true CN211784880U (en) | 2020-10-27 |
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| CN201922272362.7U Active CN211784880U (en) | 2019-12-17 | 2019-12-17 | Flexible tensile rope durability testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117782821A (en) * | 2024-01-05 | 2024-03-29 | 宁波聚关防坠落装备有限公司 | Safety rope testing system, safety rope and production process |
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2019
- 2019-12-17 CN CN201922272362.7U patent/CN211784880U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117782821A (en) * | 2024-01-05 | 2024-03-29 | 宁波聚关防坠落装备有限公司 | Safety rope testing system, safety rope and production process |
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