CN105241769B - A kind of cement electric pole dynamic loading device and loading method - Google Patents
A kind of cement electric pole dynamic loading device and loading method Download PDFInfo
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- CN105241769B CN105241769B CN201510786432.4A CN201510786432A CN105241769B CN 105241769 B CN105241769 B CN 105241769B CN 201510786432 A CN201510786432 A CN 201510786432A CN 105241769 B CN105241769 B CN 105241769B
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- 239000004568 cement Substances 0.000 title claims abstract description 69
- 238000011068 loading method Methods 0.000 title claims abstract description 58
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 70
- 239000010959 steel Substances 0.000 claims abstract description 70
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 7
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
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- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 7
- 230000003068 static effect Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
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- 239000007787 solid Substances 0.000 description 2
- 241000084490 Esenbeckia delta Species 0.000 description 1
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- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 244000131316 Panax pseudoginseng Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 241000826860 Trapezium Species 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
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Abstract
The present invention relates to a kind of cement electric pole dynamic loading device, including the steel wire rope that one end is fixed at the top of cement electric pole, directive wheel of the other end of steel wire rope through several longitudinally spaced fixations is fixed on ground；The directive wheel is fixed on the side of cement electric pole through a support；A pulling force sensor is also serially connected with steel wire rope, pulling force sensor electrically connects with a control unit；Also include a cam mechanism for being used to dynamically pull the steel wire rope, the cam mechanism includes a fixed mount, is provided with a Bidirectional-screw along fixed mount length direction, the elliptoid cam of half is respectively fixed with two sliding nuts on Bidirectional-screw, two cams move relative to the fixed mount Central Symmetry, and along the fixed mount；Fixed mount drives through a motor to be rotated, and the center superposition of pivot and the fixed mount.The beneficial effects of the present invention are：The cement electric pole or similar shaft fixed by loading device to bottom carry out dynamic load, simulate it and bear the ability of the dynamic loads such as typhoon.
Description
Technical field
The present invention relates to a kind of cement electric pole dynamic loading device and loading method, suitable for the cement electricity fixed to bottom
Bar or similar shaft carry out dynamic load, simulate it and bear the ability of dynamic load.
Background technology
In transmission and distribution networkses, often because typhoon acts on the bulk phenomenon of falling bar occurs for cement electric pole, especially
Being can be more serious in coastal area, such case.For cement electric pole by typhoon prostrated, a kind of situation is due to the strong of cement electric pole
Degree is inadequate, is broken in the presence of violent typhoon, and another situation is due to that cement electric pole ground occurs under typhoon effect
Loosen, easily cause collapsing for cement electric pole.No matter which kind of situation, it all may result in electric line and fracture occur, injures by a crashing object
People, even produce other more serious consequences.For that purpose it is necessary to certain technological means is taken, to examine actual power transmission and distribution cement
Whether electric pole can stand the typhoon grade of setting.Stressed effect of the cement electric pole under typhoon effect, both can be typhoon pair
The stress effect of cement electric pole is equivalent to certain static force, can also be equivalent to the repeated action of dynamic force.If to cement electricity
Bar applies a certain static force, and its action effect is identical with the action effect of typhoon, then by being somebody's turn to do to the artificial loading of cement electric pole
Specific static(al), it is possible to play a part of examining whether cement electric pole is toppled over or be broken.If cement electric pole is applied a certain
The dynamic force of frequency and amplitude, its action effect are identical with the action effect of typhoon, then by artificial to cement electric pole
Apply the load with the frequency and amplitude characteristic, can similarly play examine cement electric pole whether the work that can be toppled over or be broken
With.In terms of the static equivalent loading of cement electric pole, patent（Utility model：ZL201320721531, patent of invention：
CN201310569485）Give the specific design scheme and loading method of loading device.Due to during static loading, applying
The thrust for adding to cement electric pole keeps constant or changed very slow, it is impossible to reflects the dynamic effect that typhoon acts on cement electric pole
Fruit.Typhoon has certain frequency characteristic in itself, transition attribute of the static loading due to that can not reflect typhoon, be extremely difficult to
The same action effect of typhoon, thus it is unsatisfactory to the action effect of cement electric pole using static loading method assessment typhoon,
Also need to research trends loading method.
The content of the invention
The purpose of the present invention is to be directed to above weak point, there is provided a kind of cement electric pole dynamic loading device and loading side
Method, realize the dynamic load that simulation cement electric pole can be born.
Scheme is used by the present invention solves technical problem：A kind of cement electric pole dynamic loading device, including one end are consolidated
Steel wire rope at the top of cement electric pole, directive wheel of the other end of the steel wire rope through several longitudinally spaced fixations are fixed on
Ground, sustained height is in positioned at the height of the directive wheel of highest point and the fixed position of steel wire rope and cement electric pole；It is described to lead
The side of cement electric pole is fixed on through a support to wheel；A pulling force sensor is also serially connected with the steel wire rope, the pulling force passes
Sensor electrically connects with a control unit；Also include a cam mechanism for being used to dynamically pull the steel wire rope, the cam mechanism
A Bidirectional-screw is provided with including a fixed mount, along fixed mount length direction, is distinguished on two sliding nuts on Bidirectional-screw
The elliptoid cam of half is fixed with, two cams move relative to the fixed mount Central Symmetry, and along the fixed mount；Institute
State fixed mount and driven through a motor and rotated, and the center superposition of pivot and the fixed mount.
Further, fixed cover is connected to one speed reducer, the decelerator and the motor phase at the center of the fixed mount
Even.
Further, the cam outer rim is pressed into the groove circumferentially arranged with groove, the steel wire rope.
Further, the center of the fixed mount overlaps with the midpoint of two cam summit lines, the reducer output shaft
Central axis it is vertical with two cam summit lines.
Further, the both sides of the fixed mount are respectively equipped with guide rail along its length, and the cam holder is led located at described
Moved on rail along the guide rail.
Further, the Bidirectional-screw is arranged in the middle part of the fixed mount and consolidated through the bearing block positioned at fixed mount both ends
It is fixed, handle of the Bidirectional-screw wherein one end through the bearing block and provided with one for can be manually rotated Bidirectional-screw.
Further, in addition to a signal acquisition process module, the pulling force sensor through signal acquisition process module with
Control unit electrically connects, and the motor electrically connects through a motor drive module with described control unit.
Further, in addition to one is used to show that the current rotating speed of motor and current pulling force sensor export the display of value of thrust
Module, the display module are connected with described control unit.
The present invention also provides a kind of loading method of cement electric pole dynamic loading device as described above, including following step
Suddenly：
Step S1：According to typhoon grade, cement electric pole height and loading effect point, calculate dynamic load power minimum value,
Maximum and loading frequency；
Step S2：Set the original state of steel wire rope；
Step S20：Bidirectional-screw is rotated by a rotary handle, adjustment on the Bidirectional-screw two sliding nuts away from
From so that the line on two cam summits is most short, steel wire rope is pressed into the groove of cam outer rim, and driven by control unit
Motor causes fixed mount around its center rotating, to make steel wire rope most short to fixed mount centre distance with cam contact point, stop driving
Motor, fixed mount center are pivot；
Step S21：Pretension steel wire rope so that steel wire rope pretightning force is equal to the minimum value of dynamic load power, now steel wire rope
In original state；
Step S3：Set the saturation state of steel wire rope；
Step S31：Rotated by control unit motor, while observe the value of thrust of pulling force sensor, work as value of thrust
When reaching maximum, stop motor operation, if the pulling force maximum reaches the maximum of required dynamic load power, at steel wire rope
In saturation state, step S4 is gone to；Otherwise step S32 is gone to；
Step S32：Rotate Bidirectional-screw so that cam moves backward along guide rail in fixed mount, while observes pull sensing
The value of thrust of device；
Step S33：If the value of thrust of steel wire rope reaches the maximum of dynamic load power, stop the rotation Bidirectional-screw, this
When steel wire rope be in saturation state；Otherwise step S32 is gone to；
Step S4：Determine the rotating speed of motor；If motor speed is n rpm, decelerator speed reducing ratio is, then dynamic load frequency
Rate is, when it is determined that after loading force frequency, motor speed n can be obtained accordingly；
Step S5：Drive fixed mount continuously to rotate according to rotating speed n motors by control unit, cement electric pole is carried out
Dynamic load, and the delta data that lineoutofservice signal pull is loading force is recorded in loading procedure.
Compared with prior art, the present invention has following beneficial effect：For the typhoon of a certain direction, cement electric pole is acted on
When upper, its caused dynamic force, be only possible to be the wind direction pulsating quantity, without there may be with forward and reverse alternation
Power, that is to say, that cement electric pole is unidirectional by typhoon active force.Based on this, the present invention proposes to carry out dynamic load using steel wire rope
The loading of lotus（Steel wire rope can only bear pulling force, it is impossible to bear pressure）.Steel wire rope sling is flexible, conveniently changes steel by directive wheel
Cord move towards, and lineoutofservice signal pull can't with steel wire rope move towards change and change, this for loading device design and
Installation provides convenience, reduces the requirement to loading place.Cam mechanism continuously rotates under motor driven, so as to band
Dynamic tightness of steel wire rope alternating, makes cement electric pole produce the reciprocating motion to lineoutofservice signal pull direction.The benefit of this method is to move
Power source is continuously rotating（Rather than frequently forward and reverse switching）In the case of, realize the reciprocal fortune to cement electric pole dynamic load
Dynamic, dynamic load power amplitude range is adjustable, greatly improves the life-span of power source, also improves the flexibility of the loading device.
Brief description of the drawings
Patent of the present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the structure chart of cement electric pole dynamic loading device of the present invention.
Fig. 2 is the structural representation of cam mechanism of the present invention.
Fig. 3 a are that cam of the present invention is in horizontal state；
Fig. 3 b are states in steel wire rope press-in cam groove of the present invention；
Fig. 3 c are steel wire rope Pre strained states of the present invention；
Cam vertical state when Fig. 3 d are motor rotations of the present invention；
Fig. 3 e are the states that the present invention adjusts cam spacing by rotary handle Bidirectional-screw.
In figure：1- cement electric poles；2- steel wire ropes；3- directive wheels；4- motors；5- decelerators；6- cams；7- pull sensing
Device；8- fixed mounts；9- guide rails；10- Bidirectional-screws.
Embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
As shown in Fig. 1~2, the steel at the top of cement electric pole 1 is fixed in a kind of cement electric pole dynamic loading device, including one end
Cord 2, directive wheel 3 of the other end through several longitudinally spaced fixations of the steel wire rope 2 is fixed on ground, positioned at highest point
The height of directive wheel 3 and the fixed position of steel wire rope 2 and cement electric pole 1 are in sustained height；The directive wheel 3 is consolidated through a support
Due to the side of cement electric pole 1；A pulling force sensor 7 is also serially connected with the steel wire rope 2, the pulling force sensor 7 and one is controlled
Unit electrical connection processed；Also include a mechanism of cam 6 for being used to dynamically pull the steel wire rope 2, it is solid that the mechanism of cam 6 includes one
Determine frame 8, be provided with a Bidirectional-screw 10 along the length direction of fixed mount 8, it is solid respectively on two sliding nuts on Bidirectional-screw 10
Surely there is the elliptoid cam 6 of half, two cams 6 move relative to the Central Symmetry of fixed mount 8, and along the fixed mount 8；
The fixed mount 8 drives through a motor 4 to be rotated, and the center superposition of pivot and the fixed mount 8.
In actual loaded device, the number of its directive wheel 3 can flexibly be set according to being actually needed with place mounting condition
Put, but the highly desirable and steel wire rope 2 of the directive wheel 3 positioned at highest point is fixed on the apical position of cement electric pole 1 and is in same
Highly, steel wire rope 2 and cement electric pole 1 are in 90 °, so just can guarantee that in the case where pulling force is constant, to produced by cement electric pole 1
Torque it is maximum.From the foregoing, the present invention is fixed by steel wire rope 2 and cement electric pole 1, and steel wire rope 2 has flexibility, conveniently changes
Become steel wire rope 2 to move towards, therefore the loading device can flexibly change the direction of active force.Steel wire rope 2 produces dynamic load power
Realized by the mechanism of cam 6 and carry out reciprocal tension motion according to the frequency of setting, power source is continuously being rotated（Rather than frequency
Numerous positive anti-switching）In the case of, realize the adjustable dynamic of power amplitude and continuously load, greatly improve the life-span of power source,
Improve the flexibility of the loading device.
Further, fixed cover is connected to one speed reducer 5, the decelerator 5 and the motor at the center of the fixed mount 8
4 are connected.Decelerator 5 plays a part of increasing torque reduction rotating speed, for example speed reducing ratio takes 80, and the rotating speed of motor 4 is 3000 revs/min,
Then loading frequency is 1.25Hz, because the power spectral energies of typhoon are concentrated mainly within 1Hz, therefore, such one group conventional ginseng
Number design can meet the requirement of dynamic load.
Further, the outer rim of cam 6 is pressed into the groove circumferentially arranged with groove, the steel wire rope 2.
Further, the center of the fixed mount 8 overlaps with the midpoint of the summit line of two cam 6, and the decelerator 5 exports
The central axis of axle is vertical with the summit line of two cam 6.Ensure that good cam 6 has symmetry to pulling force caused by steel wire rope 2.
Further, the both sides of the fixed mount 8 are respectively equipped with guide rail 9 along its length, and the cam 6 is set up in described
Moved on guide rail 9 along the guide rail 9.
Further, the Bidirectional-screw 10 is arranged at the middle part of fixed mount 8 and through the bearing positioned at the both ends of fixed mount 8
Seat is fixed, hand of the Bidirectional-screw 10 wherein one end through the bearing block and provided with one for can be manually rotated Bidirectional-screw 10
Handle.The sliding nut of Bidirectional-screw 10 is trapezium structure, has auto-lock function, when motor 4 rotates, between two cams 6 away from
It is constant from holding.
Further, in addition to a signal acquisition process module, the pulling force sensor 7 through signal acquisition process module with
Control unit electrically connects, and the motor 4 electrically connects through the drive module of a motor 4 with described control unit.
Further, in addition to one is used to show that 4 current rotating speed of motor and current pulling force sensor 7 export the aobvious of value of thrust
Show module, the display module is connected with described control unit.Described control unit can use PC, industrial computer or its
His embedded controller, signal acquisition process module such as are AD converted, amplified, filtering at the processing to sensor signal, changing
Data afterwards are shown after control unit in display module；Control unit output order is to the drive module of motor 4 to motor 4
Rotating speed is controlled.Signal acquisition process module can use PCI or usb bus data collecting card, and motor 4 and motor 4 drive
Module can use AC servo motor 4 and its supporting driver, and described control unit can also connect a man-machine interface, the people
Machine interface can be touch-screen or keyboard, display etc..
As shown in Fig. 3 a~3e, the present invention also provides a kind of loading of cement electric pole dynamic loading device as described above
Method, comprise the following steps：
Step S1：According to typhoon grade, cement electric pole height and loading effect point, calculate dynamic load power minimum value,
Maximum and loading frequency；
Step S2：Set the original state of steel wire rope 2；
Step S20：Bidirectional-screw 10 is rotated by a rotary handle, adjustment is positioned at two sliding nuts on Bidirectional-screw 10
Distance so that the line on the summit of two cam 6 is most short, as shown in Figure 3 a；Steel wire rope 2 is pressed into the groove of the outer rim of cam 6, and
By the fixed mount 8 of control unit motor 4 around its center rotating, make steel wire rope 2 and the contact point of cam 6 to fixed mount 8
Centre distance is most short, stops motor 4, the center of fixed mount 8 is pivot, as shown in Figure 3 b；
Step S21：Pretension steel wire rope 2 so that the pretightning force of steel wire rope 2 is equal to the minimum value of dynamic load power, now steel wire
Rope 2 is in original state, as shown in Figure 3 c；
Step S3：Set the saturation state of steel wire rope 2；
Step S31：Rotated by control unit motor 4, while observe the value of thrust of pulling force sensor 7, work as pulling force
When reaching maximum, stop motor and rotate, as shown in Figure 3 d, if the pulling force maximum has reached required dynamic load power most
Big value, then now steel wire rope 2 is in saturation state, go to step S4；Otherwise step S32 is gone to；
Step S32：Rotate Bidirectional-screw 10 so that cam 6 moves backward along guide rail 9 in fixed mount 8, while observes pulling force
The value of thrust of sensor 7；
Step S33：If the value of thrust of steel wire rope 2 reaches the maximum of dynamic load power, stop the rotation Bidirectional-screw 10,
Now steel wire rope 2 is in saturation state, as shown in Figure 3 e；Otherwise step S32 is gone to；
Step S4：Determine the rotating speed of motor 4；If the rotating speed of motor 4 is n rpm, the speed reducing ratio of decelerator 5 is, then dynamically add
Carrier frequency rate is, when it is determined that after loading force frequency, the rotating speed n of motor 4 can be obtained accordingly；
Step S5：Drive fixed mount 8 continuously to rotate according to rotating speed n motors 4 by control unit, realize to cement electricity
Bar 1 carries out dynamic load, while records the pulling force of the steel wire rope 2 i.e. delta data of loading force.
In summary, a kind of cement electric pole dynamic loading device and loading method provided by the invention, it is possible to achieve pass through
Steel wire rope carries out pulling force dynamic load to cement pole, so as to simulate the ability that cement electric pole bears typhoon.
Above-listed preferred embodiment provided by the invention, the object, technical solutions and advantages of the present invention are carried out further
Describe in detail, should be understood that the foregoing is merely illustrative of the preferred embodiments of the present invention, be not intended to limit the invention,
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's
Within protection domain.
Claims (9)
- A kind of 1. cement electric pole dynamic loading device, it is characterised in that：The steel wire rope being fixed on including one end at the top of cement electric pole, Directive wheel of the other end of the steel wire rope through several longitudinally spaced fixations be fixed on ground, positioned at the directive wheel of highest point Height is in sustained height with the fixed position of steel wire rope and cement electric pole；The directive wheel is fixed on cement electric pole through a support Side；A pulling force sensor is also serially connected with the steel wire rope, the pulling force sensor electrically connects with a control unit；Also wrap Include one to be used to dynamically pull the cam mechanism of the steel wire rope, the cam mechanism includes a fixed mount, along fixed mount length side To provided with a Bidirectional-screw, the elliptoid cam of half is respectively fixed with two sliding nuts on Bidirectional-screw, two is convex Wheel moves relative to the fixed mount Central Symmetry, and along the fixed mount；The fixed mount drives through a motor to be rotated, and And the center superposition of pivot and the fixed mount.
- A kind of 2. cement electric pole dynamic loading device according to claim 1, it is characterised in that：The center of the fixed mount Place's fixed cover is connected to one speed reducer, and the decelerator is connected with the motor.
- A kind of 3. cement electric pole dynamic loading device according to claim 2, it is characterised in that：The center of the fixed mount Overlapped with the midpoint of two cam summit lines, the central axis of the reducer output shaft is vertical with two cam summit lines.
- A kind of 4. cement electric pole dynamic loading device according to claim 1, it is characterised in that：Cam outer rim edge week It is pressed into provided with groove, the steel wire rope in the groove.
- A kind of 5. cement electric pole dynamic loading device according to claim 1, it is characterised in that：The both sides of the fixed mount Guide rail is respectively equipped with along its length, and the cam holder moves on the guide rail along the guide rail.
- A kind of 6. cement electric pole dynamic loading device according to claim 1, it is characterised in that：The Bidirectional-screw is set Fixed in the middle part of the fixed mount and through the bearing block positioned at fixed mount both ends, the Bidirectional-screw wherein one end passes through the axle Bearing and the handle provided with one for can be manually rotated Bidirectional-screw.
- A kind of 7. cement electric pole dynamic loading device according to claim 1, it is characterised in that：Also include a signal acquisition Processing module, the pulling force sensor electrically connect through signal acquisition process module with control unit, and the motor drives through a motor Dynamic model block electrically connects with described control unit.
- A kind of 8. cement electric pole dynamic loading device according to claim 7, it is characterised in that：Also include one to be used to show The display module of the current rotating speed of motor and current pulling force sensor output value of thrust, the display module connect with described control unit Connect.
- 9. a kind of loading method of cement electric pole dynamic loading device as claimed in claim 2, it is characterised in that including following Step：Step S1：According to typhoon grade, cement electric pole height and loading effect point, minimum value, the maximum of calculating dynamic load power Value and loading frequency；Step S2：Set the original state of steel wire rope；Step S20：Bidirectional-screw is rotated by a rotary handle, adjustment makes positioned at the distance of two sliding nuts on Bidirectional-screw Two cam summits line it is most short, steel wire rope is pressed into the groove of cam outer rim, and passes through control unit motor So that fixed mount around its center rotating, makes steel wire rope most short to fixed mount centre distance with cam contact point, stop motor, Fixed mount center is pivot；Step S21：Pretension steel wire rope so that steel wire rope pretightning force is equal to the minimum value of dynamic load power, and now steel wire rope is in Original state；Step S3：Set the saturation state of steel wire rope；Step S31：Rotated by control unit motor, while observe the value of thrust of pulling force sensor, when value of thrust reaches When maximum, stop motor and rotate, if the pulling force maximum reaches the maximum of required dynamic load power, steel wire rope is in saturation State, go to step S4；Otherwise step S32 is gone to；Step S32：Rotate Bidirectional-screw so that cam moves backward along guide rail in fixed mount, while observes pulling force sensor Value of thrust；Step S33：If the value of thrust of steel wire rope reaches the maximum of dynamic load power, stop the rotation Bidirectional-screw, now steel Cord is in saturation state；Otherwise step S32 is gone to；Step S4：Determine the rotating speed of motor；If motor speed is n rpm, decelerator speed reducing ratio is i, then dynamic load frequency is, when it is determined that after loading force frequency, motor speed n can be obtained accordingly；Step S5：Fixed mount is driven continuously to rotate according to rotating speed n motors by control unit, i.e. the progress to cement electric pole Dynamic load, while record the delta data in loading procedure of the i.e. loading force of lineoutofservice signal pull.
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| JP7223873B2 (en) * | 2019-11-20 | 2023-02-16 | 日本電信電話株式会社 | utility pole testing equipment |
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