CN108844759B - Testing device and testing method for double-rope-outlet double-row rope winch - Google Patents
Testing device and testing method for double-rope-outlet double-row rope winch Download PDFInfo
- Publication number
- CN108844759B CN108844759B CN201810174577.2A CN201810174577A CN108844759B CN 108844759 B CN108844759 B CN 108844759B CN 201810174577 A CN201810174577 A CN 201810174577A CN 108844759 B CN108844759 B CN 108844759B
- Authority
- CN
- China
- Prior art keywords
- steel wire
- wire rope
- rope
- fixing device
- double
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Engines (AREA)
Abstract
The test device comprises a bend pulley, a balance beam, a tooling steel wire rope, a load tower and a load, wherein the balance beam is provided with a first fixing device and a second fixing device which are positioned on one side of the balance beam and have a distance of L, and a third fixing device which is positioned on a perpendicular bisector of the first fixing device and the second fixing device, the diameter of the bend pulley is L, the other end of the first steel wire rope is arranged in the first fixing device by bypassing the bend pulley, the other end of the second steel wire rope is arranged in the second fixing device, one end of the tooling steel wire rope is arranged in the third fixing device, the other end of the tooling steel wire rope is connected with the load by bypassing a pulley block on the load tower, the tension on the first steel wire rope and the tension on the second steel wire rope are completely the same, the first steel wire rope and the second steel wire rope can be simultaneously tensioned only by roughly adjusting the lengths of the first steel wire rope and the second steel wire rope, and the adjustment workload of the steel wire ropes is.
Description
Technical Field
The invention relates to the technical field of hoisting mechanical engineering, in particular to a testing device and a testing method for a double-rope-outlet double-row rope hoist.
Background
The winch is a hoisting device which drives a winding drum by manpower or mechanical power and realizes the hoisting or traction of heavy objects by winding ropes by the winding drum, is widely applied to the engineering fields of miners, metallurgy, buildings, roads and bridges, water and electricity, hoisting and the like, and can vertically hoist, horizontally or obliquely drag heavy objects. There are engineering cases in which two heavy objects are lifted or pulled simultaneously by using a set of double-rope-outlet double-row rope hoist.
At present, a load test of a double-rope-outlet double-row rope winch is generally performed by using a load test tower, two sets of load towers are generally arranged, and two steel wire ropes of the winch are respectively wound around pulley blocks on the two sets of load towers and connected with a load.
In the process of implementing the invention, the inventor finds that the prior test method has at least the following problems:
because two sets of load towers are required to be arranged during the test, the test cost and the test period are undoubtedly increased, and only a few factories generally have the condition. And the double-rope-outlet double-rope winch requires that two steel wire ropes must be tensioned simultaneously, the rope pressing positions of the two steel wire ropes on the winch drum need to be adjusted repeatedly to adjust the tightness degree of the steel wire ropes when two sets of load towers are used for testing, meanwhile, a pre-tightening device needs to be added to finely adjust the tightness degree of the steel wire ropes, and the adjusting workload is very large. And the actual configuration condition of each load is different from the self precision, so that the tension of the two steel wire ropes is difficult to adjust uniformly, the stress of the two steel wire ropes is uneven, the abrasion of the steel wire rope bearing a large load is accelerated, the service life of the steel wire rope is shortened, and serious safety accidents such as rope breakage and the like can also occur in serious cases.
Disclosure of Invention
In order to solve the problems that two sets of load towers are arranged in the prior art, the test cost and the test period are increased, and the tension of two steel wire ropes is difficult to adjust consistently, the embodiment of the invention provides a test device and a test method of a double-rope-outlet double-row rope winch. The technical scheme is as follows:
in a first aspect, the invention provides a test device of a double-rope-outlet double-row rope winch, the double-rope-outlet double-row rope winch comprises a first steel wire rope and a second steel wire rope which are opposite in rope outlet direction, the test device comprises a bend pulley, a balance beam, a tooling steel wire rope, a load tower and a load,
the balance beam is provided with three fixing devices, the three fixing devices comprise a first fixing device and a second fixing device which are positioned on one side of the balance beam and a third fixing device which is positioned on the other side of the balance beam, the distance between the first fixing device and the second fixing device is L, and the third fixing device is positioned on a perpendicular bisector of a connecting line of the first fixing device and the second fixing device;
the diameter of the direction-changing pulley is L, the rope inlet direction of the direction-changing pulley is the same as the rope outlet direction of the first steel wire rope, and the rope outlet direction of the direction-changing pulley is the same as the rope outlet direction of the second steel wire rope;
one ends of the first steel wire rope and the second steel wire rope are fixed on the double-rope-outlet double-row rope winch, the other end of the first steel wire rope is installed in the first fixing device by bypassing the direction-changing pulley, the other end of the second steel wire rope is installed in the second fixing device, one end of the tooling steel wire rope is installed in the third fixing device, and the other end of the tooling steel wire rope is connected with the load by bypassing the pulley block on the load tower.
Further, the distance L between the first and second fixtures satisfies the following equation:
L＝S/cosθ,
s is the allowed maximum synchronism error of the first steel wire rope and the second steel wire rope, theta is the included angle between the connection line of the first fixing device and the second fixing device and the first steel wire rope or the second steel wire rope after the tooling steel wire rope lifts a load, theta is larger than or equal to 70 degrees and smaller than or equal to 110 degrees, and S is smaller than or equal to 300 mm.
Further, the assembly pulley on the load pylon includes three fixed pulley, three fixed pulley is including the first fixed pulley that is located the bottom of the tower and the second fixed pulley and the third fixed pulley that are located the top of the tower, frock wire rope walks around in proper order first fixed pulley the second fixed pulley with the third fixed pulley with the load is connected, first fixed pulley the second fixed pulley with the third fixed pulley is located same vertical plane.
Furthermore, the three fixing devices comprise cable ties and positioning pins, one ends of the cable ties are fixed on the balance beam through the positioning pins, and the other ends of the cable ties are connected with the steel wire rope.
Furthermore, the balance beam comprises two flat plates arranged in parallel and a connecting plate connected between the two flat plates, and the cable ties of the three fixing devices are respectively arranged between the two flat plates and connected with the two flat plates through positioning pins.
Furthermore, the two flat plates and the connecting plate form a box-shaped structure, and openings are formed in the connecting position of the first steel wire rope and the first fixing device, the connecting position of the second steel wire rope and the second fixing device and the connecting position of the tooling steel wire rope and the third fixing device of the box-shaped structure.
Furthermore, the two flat plates and the connecting plate are both steel plates.
In a second aspect, the present invention provides a test method for a double-rope-outlet double-rope winding machine, which is applied to the test apparatus according to the first aspect, and is characterized in that the test method includes:
a first steel wire rope of the double-rope-outlet double-row rope winch bypasses a bend pulley and is arranged in a first fixing device on a balance beam;
installing a second steel wire rope of the double-rope-outlet double-row rope winch in a second fixing device on the balance beam;
one end of a tooling steel wire rope is arranged in a third fixing device on the balance beam;
connecting the other end of the tooling steel wire rope with a load by bypassing a pulley block on a load tower;
and calculating the synchronism errors of the first steel wire rope and the second steel wire rope.
Further, the calculating a synchronicity error of the first and second wire ropes includes:
detecting an included angle α between a connecting line of the first fixing device and the second fixing device and the first steel wire rope or the second steel wire rope when the first steel wire rope and the second steel wire rope are tensioned before the tool steel wire rope lifts a load;
detecting an included angle β between a connecting line of the first fixing device and the second fixing device and the first steel wire rope or the second steel wire rope when the first steel wire rope and the second steel wire rope are tensioned after the tool steel wire rope lifts a load;
calculating a synchronicity error △ S of the first and second wire ropes according to the following formula:
△S＝L*|cosα±cosβ|，
wherein L is the distance between the first and second fixation devices.
Further, the assay method further comprises:
judging whether the synchronism error △ S of the first steel wire rope and the second steel wire rope is smaller than the allowed maximum synchronism error S of the first steel wire rope and the second steel wire rope, wherein S is less than or equal to 300 mm;
and if △ S is larger than S, judging that the load test of the double-rope-outlet double-row rope winch is unqualified.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the diameter of the direction-changing pulley is L, the rope inlet direction of the direction-changing pulley is the same as the rope outlet direction of the first steel wire rope, the rope outlet direction of the direction-changing pulley is the same as the rope outlet direction of the second steel wire rope, the first steel wire rope bypasses the direction-changing pulley, the rope outlet directions of the first steel wire rope and the second steel wire rope are the same, and the first steel wire rope and the second steel wire rope are located in the same horizontal plane, a load test of the double-rope-row rope winch can be realized only by one set of load tower, three fixing devices are arranged on the balance beam, the three fixing devices comprise a first fixing device and a second fixing device which are located on one side of the balance beam, and a third fixing device which is located on the other side of the balance beam, the distance between the first fixing device and the second fixing device is L, the third fixing device is located on a perpendicular bisector of the first fixing device and the second fixing device, the first steel wire rope is installed in the first fixing device, the second steel wire rope is installed in the second fixing device, one end of the tool is installed in the third fixing device, the other end of the tool is connected with the load pulley on the load tower, the first steel wire rope and the second steel wire rope, the tension of the first steel wire rope is completely adjusted.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a testing apparatus of a double-rope-outlet double-rope winch according to an embodiment of the present invention;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a partial structural schematic diagram of a testing apparatus of a double-rope-outlet double-rope winding machine according to an embodiment of the present invention;
fig. 4 is a partial structural schematic diagram of a testing device of another double-rope-outlet double-rope winding machine provided by the embodiment of the invention;
FIG. 5 is a schematic structural diagram of a balance beam according to an embodiment of the present invention;
fig. 6 is a flowchart of a method for testing a double-rope-outlet double-rope winch according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The invention provides a test device of a double-rope-outlet double-row rope winch, fig. 1 is a schematic structural diagram of the test device of the double-rope-outlet double-row rope winch provided by the embodiment of the invention, fig. 2 is a top view of fig. 1, as shown in fig. 1 and fig. 2, the double-rope-outlet double-row rope winch 100 comprises a first steel wire rope 1 and a second steel wire rope 2 which are opposite in rope outlet directions, and the test device comprises a bend pulley 3, a balance beam 4, a tooling steel wire rope 5, a load tower 6 and a load 7.
Fig. 3 is a partial structural schematic diagram of a testing apparatus of a double-rope-outlet double-rope winding machine according to an embodiment of the present invention, as shown in fig. 3, three fixing devices are arranged on a balance beam 4, the three fixing devices include a first fixing device 41 and a second fixing device 42 which are located on one side of the balance beam 4, and a third fixing device 43 which is located on the other side of the balance beam 4, a distance between the first fixing device 41 and the second fixing device 42 is L, and the third fixing device 43 is located on a perpendicular bisector of the first fixing device 41 and the second fixing device 42.
As shown in fig. 1, the diameter of the direction-changing pulley 3 is L, the rope-entering direction of the direction-changing pulley 3 is the same as the rope-exiting direction of the first steel wire rope 1, and the rope-exiting direction of the direction-changing pulley 3 is the same as the rope-exiting direction of the second steel wire rope 2.
One ends of the first steel wire rope 1 and the second steel wire rope 2 are fixed on the double-rope-outlet double-row rope winch 100, the other end of the first steel wire rope 1 is installed in the first fixing device 41 by passing around the bend pulley, the other end of the second steel wire rope 2 is installed in the second fixing device 42, one end of the tooling steel wire rope 5 is installed in the third fixing device 43, and the other end of the tooling steel wire rope 5 is connected with the load 7 by passing around the pulley block on the load tower 6.
According to the embodiment of the invention, the direction-changing pulley is arranged, the diameter of the direction-changing pulley is L, the rope inlet direction of the direction-changing pulley is the same as the rope outlet direction of the first steel wire rope, the rope outlet direction of the direction-changing pulley is the same as the rope outlet direction of the second steel wire rope, the first steel wire rope bypasses the direction-changing pulley, the rope outlet directions of the first steel wire rope and the second steel wire rope are the same, and the first steel wire rope and the second steel wire rope are positioned in the same horizontal plane, a load test of the double-rope-outlet double-row rope winch can be realized only by one set of load tower, three fixing devices are arranged on the balance beam, the three fixing devices comprise a first fixing device and a second fixing device which are positioned on one side of the balance beam, and a third fixing device which is positioned on the other side of the balance beam, the distance between the first fixing device and the second fixing device is L, the third fixing device is positioned on a middle vertical line of the first fixing device and the second fixing device, the first steel wire rope is installed in the first fixing device, the second steel wire rope is installed in the second fixing device, one end of the tool is installed in the third fixing device, the load tower is connected with the load tower, the first steel wire rope and the second.
As shown in fig. 3, in the state where the first steel wire rope 1 and the second steel wire rope 2 are tensioned before the tooling steel wire rope 5 lifts the load 7, an included angle between a connecting line of the first fixing device 41 and the second fixing device 42 and the first steel wire rope 1 or the second steel wire rope 2 is α.
Fig. 4 is a partial schematic structural view of another testing apparatus for a double-rope-outlet double-row rope hoist according to an embodiment of the present invention, and as shown in fig. 4, in this case, when the tool steel wire rope 5 lifts the load 7 and the first steel wire rope 1 and the second steel wire rope 2 are in a tensioned state, an included angle between a connecting line of the first fixing device 41 and the second fixing device 42 and the first steel wire rope 1 or the second steel wire rope 2 becomes β.
Specifically, the winding drum of the double-rope-outlet double-row rope winch 100 slowly winds the first steel wire rope 1 and the second steel wire rope 2, the shorter steel wire rope of the first steel wire rope 1 and the second steel wire rope 2 is gradually tensioned, the balance beam 4 rotates, the longer steel wire rope is gradually tensioned, the double-rope-outlet double-row rope winch 100 continues to wind the steel wire ropes, the balance beam 4 is pulled to rotate again, and finally the first steel wire rope and the second steel wire rope are tensioned simultaneously. At this time, the first wire rope 1 and the second wire rope 2 are subjected to the same tension.
Further, the synchronism error △ S of the first wire rope 1 and the second wire rope 2 is L × cos α ± cos β |. by calculating the error, it is possible to know whether the synchronism error △ S of the first wire rope 1 and the second wire rope 2 is within an allowable range.
In the embodiment, the allowable maximum synchronization error of the first steel wire rope 1 and the second steel wire rope 2 is S, and S is less than or equal to 300 mm.
Further, the distance L between the first fixture 41 and the second fixture 42 satisfies the following equation:
L＝S/cosθ,
wherein, S is the maximum allowable synchronization error of the first steel wire rope 1 and the second steel wire rope 2, S is not more than 300mm, θ is the included angle between the connection line of the first fixing device 41 and the second fixing device 42 and the first steel wire rope 1 or the second steel wire rope 2 after the tool steel wire rope 3 lifts the load, and θ is not less than 70 ° and not more than 110 °.
Preferably, the distance L between the first and second fastening devices 41, 42 satisfies 2000mm ≦ L ≦ 3000 mm.
Further, as shown in fig. 1, the pulley block on the load tower 6 includes three fixed pulleys, the three fixed pulleys include a first fixed pulley 61 located at the tower bottom and a second fixed pulley 62 and a third fixed pulley 63 located at the tower top, the tool steel wire rope 5 sequentially rounds the first fixed pulley 61, the second fixed pulley 62 and the third fixed pulley 63 to be connected with the load 7, and the first fixed pulley, the second fixed pulley and the third fixed pulley are located on the same vertical plane.
Specifically, the rope entry direction of the first fixed sheave 61 is the same as the rope exit direction of the second wire rope 2. The rope outlet direction of the first fixed pulley 61 is the same as the rope inlet direction of the second fixed pulley 62, the rope outlet direction of the second fixed pulley 62 is the same as the rope inlet direction of the third fixed pulley 63, and the rope outlet direction of the third fixed pulley 63 is opposite to the rope outlet direction of the first fixed pulley 61. By adopting the arrangement mode, the load test of the double-rope-outlet double-row rope winch can be completed only by three fixed pulleys, and the structure is simple.
Furthermore, the three fixing devices comprise cable ties and positioning pins, one ends of the cable ties are fixed on the balance beam through the positioning pins, and the other ends of the cable ties are connected with the steel wire ropes. The end part of the steel wire rope is arranged in the cable knot, so that the steel wire rope can not easily fall off, accidents can be avoided, and the connection stability of the steel wire rope and the balance beam is improved.
Fig. 5 is a schematic structural view of a balance beam according to an embodiment of the present invention, and as shown in fig. 5, the balance beam 4 includes two flat plates 4a arranged in parallel and a connecting plate 4b connected between the two flat plates 4 a. The balance beam is set to be of the structure, so that the structural strength of the balance beam can be guaranteed.
In particular, as can be seen in connection with fig. 3 and 4, the knot of the three fixing means is arranged between the two plates 4a and is connected to the two plates 4a by means of the dowel pins.
In fig. 5, only the structure of one flat plate 4a can be seen, in this embodiment, the two flat plates 4a have the same structure, and hereinafter, a description will be given by taking one flat plate 4a as an example, and as shown in fig. 5, each flat plate 4a is provided with three through holes, which include a first through hole 41a and a second through hole 42a on one side of the balance beam 4 and a third through hole 43a on the other side of the balance beam 4, the distance between the center lines of the first through hole 41a and the second through hole 42a is L, the third through hole 43a is located on the perpendicular bisector of the first through hole 41a and the second through hole 42a, the positioning pin of the first fixing device 41 passes through the first through holes 41a of the two flat plates 4a, the knot of the first fixing device 41 is connected to the two flat plates 4a, and similarly, the positioning pin of the second fixing device 42 passes through the second through holes 42a of the two flat plates 4a, the knot of the second fixing device 42 is connected to the two flat plates 4a, and the third fixing device 43 passes through the third through holes 43a of the two flat plates 4 a.
Preferably, the two flat plates 4a and the connecting plate 4b form a box-shaped structure, and the box-shaped structure is provided with openings at the joint of the first steel wire rope 1 and the first fixing device 41, the joint of the second steel wire rope 2 and the second fixing device 42, and the joint of the tooling steel wire rope 5 and the third fixing device 43. By forming the two flat plates 4a and the connecting plate 4b into a box-type structure, the weight of the balance beam can be reduced, and materials can be saved. The box-type structure is a sealed box body consisting of a bottom plate, a top plate and side plates.
Further, the two flat plates 4a and the connecting plate 4b are both steel plates.
The invention provides a test method of a double-rope-outlet double-row rope winch, and fig. 6 is a flow chart of a method of the test method of the double-rope-outlet double-row rope winch provided by the embodiment of the invention, which is suitable for a test device in the embodiment, and the test method comprises the following steps:
The diameter of the direction-changing pulley is L, the rope inlet direction of the direction-changing pulley is the same as the rope outlet direction of the first steel wire rope, and the rope outlet direction of the direction-changing pulley is the same as the rope outlet direction of the second steel wire rope.
And 602, installing a second steel wire rope of the double-rope-outlet double-row rope winch in a second fixing device on the balance beam.
And 603, installing one end of the tooling steel wire rope in a third fixing device on the balance beam.
And step 604, connecting the other end of the tooling steel wire rope with a load by bypassing a pulley block on a load tower.
In this embodiment, the assembly pulley on the load tower includes three fixed pulleys, and three fixed pulleys include the first fixed pulley that is located the bottom of the tower and the second fixed pulley and the third fixed pulley that are located the top of the tower, and frock wire rope is connected with the load around first fixed pulley, second fixed pulley and third fixed pulley in proper order.
Specifically, step 605 includes:
before the tool steel wire rope is used for lifting a load, when the first steel wire rope and the second steel wire rope are tensioned, an included angle α between a connecting line of the first fixing device and the second fixing device and the first steel wire rope or the second steel wire rope is detected.
And after the tool steel wire rope is detected to lift the load, when the first steel wire rope and the second steel wire rope are tensioned, an included angle β between a connecting line of the first fixing device and the second fixing device and the first steel wire rope or the second steel wire rope is detected.
And calculating the synchronism error △ S of the first steel wire rope and the second steel wire rope according to the included angle α and the included angle β.
Specifically, the synchronism error △ S of the first and second wire ropes is calculated according to the following formula:
△S＝L*|cosα±cosβ|，
where L is the distance between the first and second fixtures.
Further, the test method further comprises:
And if the S is less than or equal to 300mm, and △ S is greater than S, determining that the load test of the double-rope-outlet double-row rope winch is unqualified.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A test device of a double-rope-outlet double-row rope winch comprises a first steel wire rope and a second steel wire rope which are opposite in rope outlet direction, and is characterized by comprising a bend pulley, a balance beam, a tooling steel wire rope, a load tower and a load,
the balance beam is provided with three fixing devices, the three fixing devices comprise a first fixing device and a second fixing device which are positioned on one side of the balance beam and a third fixing device which is positioned on the other side of the balance beam, the distance between the first fixing device and the second fixing device is L, and the third fixing device is positioned on a perpendicular bisector of a connecting line of the first fixing device and the second fixing device;
the diameter of the direction-changing pulley is L, the rope inlet direction of the direction-changing pulley is the same as the rope outlet direction of the first steel wire rope, and the rope outlet direction of the direction-changing pulley is the same as the rope outlet direction of the second steel wire rope;
one ends of the first steel wire rope and the second steel wire rope are fixed on the double-rope-outlet double-row rope winch, the other end of the first steel wire rope is mounted in the first fixing device by bypassing the bend pulley, the other end of the second steel wire rope is mounted in the second fixing device, one end of the tooling steel wire rope is mounted in the third fixing device, and the other end of the tooling steel wire rope is connected with the load by bypassing a pulley block on the load tower;
the distance L between the first and second fixtures satisfies the following equation:
L＝S/cosθ,
s is the allowed maximum synchronism error of the first steel wire rope and the second steel wire rope, theta is the included angle between the connection line of the first fixing device and the second fixing device and the first steel wire rope or the second steel wire rope after the tooling steel wire rope lifts a load, theta is larger than or equal to 70 degrees and smaller than or equal to 110 degrees, and S is smaller than or equal to 300 mm;
the three fixing devices comprise cable ties and positioning pins, one ends of the cable ties are fixed on the balance beam through the positioning pins, and the other ends of the cable ties are connected with the steel wire rope.
2. The testing device of claim 1, wherein the pulley block on the load tower comprises three fixed pulleys, the three fixed pulleys comprise a first fixed pulley positioned at the tower bottom and a second fixed pulley and a third fixed pulley positioned at the tower top, the tooling steel wire rope sequentially bypasses the first fixed pulley, the second fixed pulley and the third fixed pulley to be connected with the load, and the first fixed pulley, the second fixed pulley and the third fixed pulley are positioned on the same vertical plane.
3. The test device of claim 1, wherein the balance beam comprises two flat plates arranged in parallel and a connecting plate connected between the two flat plates, and the cable ties of the three fixing devices are respectively arranged between the two flat plates and connected with the two flat plates through positioning pins.
4. The testing device of claim 3, wherein the two flat plates and the connecting plate form a box-shaped structure, and openings are formed in the box-shaped structure at the joint of the first steel wire rope and the first fixing device, the joint of the second steel wire rope and the second fixing device, and the joint of the tool steel wire rope and the third fixing device.
5. The testing device of claim 3, wherein the two flat plates and the connecting plate are both steel plates.
6. A test method of a double-rope-outlet double-row rope winch is suitable for the test device of any one of claims 1 to 5, and is characterized by comprising the following steps:
a first steel wire rope of the double-rope-outlet double-row rope winch bypasses a bend pulley and is arranged in a first fixing device on a balance beam;
installing a second steel wire rope of the double-rope-outlet double-row rope winch in a second fixing device on the balance beam;
one end of a tooling steel wire rope is arranged in a third fixing device on the balance beam;
connecting the other end of the tooling steel wire rope with a load by bypassing a pulley block on a load tower;
and calculating the synchronism errors of the first steel wire rope and the second steel wire rope.
7. The testing method of claim 6, wherein the calculating of the synchronicity error of the first and second wire ropes comprises:
detecting an included angle α between a connecting line of the first fixing device and the second fixing device and the first steel wire rope or the second steel wire rope when the first steel wire rope and the second steel wire rope are tensioned before the tool steel wire rope lifts a load;
detecting an included angle β between a connecting line of the first fixing device and the second fixing device and the first steel wire rope or the second steel wire rope when the first steel wire rope and the second steel wire rope are tensioned after the tool steel wire rope lifts a load;
calculating a synchronicity error △ S of the first and second wire ropes according to the following formula:
△S＝L*|cosα±cosβ|，
wherein L is the distance between the first and second fixation devices.
8. The assay of claim 6, further comprising:
judging whether the synchronism error △ S of the first steel wire rope and the second steel wire rope is smaller than the allowed maximum synchronism error S of the first steel wire rope and the second steel wire rope, wherein S is less than or equal to 300 mm;
and if △ S is larger than S, judging that the load test of the double-rope-outlet double-row rope winch is unqualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810174577.2A CN108844759B (en) | 2018-03-02 | 2018-03-02 | Testing device and testing method for double-rope-outlet double-row rope winch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810174577.2A CN108844759B (en) | 2018-03-02 | 2018-03-02 | Testing device and testing method for double-rope-outlet double-row rope winch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108844759A CN108844759A (en) | 2018-11-20 |
| CN108844759B true CN108844759B (en) | 2020-07-21 |
Family
ID=64211788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810174577.2A Active CN108844759B (en) | 2018-03-02 | 2018-03-02 | Testing device and testing method for double-rope-outlet double-row rope winch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108844759B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630416A (en) * | 2013-12-13 | 2014-03-12 | 中联重科股份有限公司 | Test platform of hoisting mechanism |
| CN105217505A (en) * | 2015-11-04 | 2016-01-06 | 北方重工集团有限公司 | A kind of duplex type steel wire rope of windlass stress balancing device |
| CN107014596A (en) * | 2017-03-21 | 2017-08-04 | 武汉船用机械有限责任公司 | A kind of towing winch pilot system |
| CN107245986A (en) * | 2017-06-14 | 2017-10-13 | 江苏省太湖水利规划设计研究院有限公司 | A kind of new shared two-way rope stretching opening/closing system of reel |
-
2018
- 2018-03-02 CN CN201810174577.2A patent/CN108844759B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630416A (en) * | 2013-12-13 | 2014-03-12 | 中联重科股份有限公司 | Test platform of hoisting mechanism |
| CN105217505A (en) * | 2015-11-04 | 2016-01-06 | 北方重工集团有限公司 | A kind of duplex type steel wire rope of windlass stress balancing device |
| CN107014596A (en) * | 2017-03-21 | 2017-08-04 | 武汉船用机械有限责任公司 | A kind of towing winch pilot system |
| CN107245986A (en) * | 2017-06-14 | 2017-10-13 | 江苏省太湖水利规划设计研究院有限公司 | A kind of new shared two-way rope stretching opening/closing system of reel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108844759A (en) | 2018-11-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11300104B2 (en) | Wind turbine blade removal and installation system and method | |
| CN103883129B (en) | A kind of steel structural roof beam installation method | |
| CN111764517A (en) | Large-span truss string guiding traction high-altitude cable loading method | |
| CN112340590A (en) | Steel pipe column swivel hoisting device and steel pipe column swivel hoisting method | |
| CN108844759B (en) | Testing device and testing method for double-rope-outlet double-row rope winch | |
| KR101066243B1 (en) | Install device for tower and its using the tower erection | |
| CN208039053U (en) | A kind of sling of suspension bridge installation auxiliary clamp | |
| CN115125857A (en) | Stay cable installation construction technology | |
| CN113896089B (en) | Construction method of oversized blast furnace | |
| CN113846891B (en) | Power grid power transmission and distribution fabricated structure and construction method | |
| CN113215992B (en) | Assembling control method for sling tower frame for construction of steel truss arch bridge by inclined pulling buckling hanging method | |
| CN111155822A (en) | Steel strand installation method for wind driven generator support tower frame prestressed structure | |
| CN112942109B (en) | Method for mounting main cable saddle of single-tower self-anchored suspension bridge | |
| CN114822890A (en) | Nuclear power station equipment gate installation method | |
| CN107101810B (en) | A kind of detection method and detection system of the brake assemblies of towing winch | |
| CN110284700A (en) | Operating platform and construction method applied to hyperboloid space structure | |
| KR100668778B1 (en) | Load Testing Device for Hoist | |
| CN111071925A (en) | Hoisting sheave platform for installing derrick crane and crane installation method | |
| CN220451217U (en) | Soft film mounting and fixing device | |
| KR100365315B1 (en) | Load measurement device of elevator | |
| CN112299223B (en) | Hoisting tool and hoisting method for water stop | |
| CN221320700U (en) | Replacement device for special-shaped arch bridge space curved surface sling | |
| CN114575245B (en) | Construction method of spatial main cable suspension bridge handrail rope | |
| KR20130096030A (en) | Pulling up apparatus for installing cable of suspension bridge and installing condition thereof | |
| CN218950777U (en) | Hoisting device and hoisting system for special holding pole for shaft hoisting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |