CN113959609A - Cable horizontal side pressure monitoring and collecting mechanism - Google Patents
Cable horizontal side pressure monitoring and collecting mechanism Download PDFInfo
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- CN113959609A CN113959609A CN202110871742.1A CN202110871742A CN113959609A CN 113959609 A CN113959609 A CN 113959609A CN 202110871742 A CN202110871742 A CN 202110871742A CN 113959609 A CN113959609 A CN 113959609A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 55
- 238000012544 monitoring process Methods 0.000 title claims abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 67
- 238000000034 method Methods 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 12
- 238000005452 bending Methods 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
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- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention discloses a cable horizontal side pressure monitoring and collecting mechanism which comprises a base frame, wherein a vertical pressure detection mechanism for performing vertical pressure detection on a cable is arranged on the base frame, and a lateral pressure detection mechanism for performing lateral pressure detection on the cable is also arranged on the base frame. The invention is provided with a vertical pressure detection mechanism for detecting the vertical pressure of the cable on the base frame and a lateral pressure detection mechanism for detecting the lateral pressure of the cable on the base frame, wherein the lateral pressure detection mechanism and the vertical pressure detection mechanism respectively detect the vertical pressure and the lateral pressure in the cable laying process, which is beneficial for an operator to know the cable form changes of a horizontal X axis and a vertical Y axis in the cable laying process in time, thereby carrying out timely adjustment, eliminating the laying risk possibly existing in the cable, and calculating the critical value of the vertical pressure or the lateral pressure by a characteristic detection method, and when the detected vertical pressure or the detected lateral pressure exists.
Description
Technical Field
The invention relates to the technical field of cable laying, in particular to a cable horizontal side pressure monitoring and collecting mechanism.
Background
Aiming at the corresponding national standard, row standard and enterprise standard in the laying standard of the extra-high voltage cable, the special stress range for the lateral pressure on the cable is specified in the laying process of the extra-high voltage cable; the ultrahigh-voltage cable is laid from the ground to a working well, and the cable laying trend at the turning position of the working well gallery is that in the dynamic laying process of the cable, the dynamic change of horizontal direction dynamic lateral stress exists, so that the cable form change of the cable in the horizontal X axis and the vertical direction Y axis direction is caused, and the cable laying risk is easy to occur. Therefore, we improve the above and propose a cable horizontal side pressure monitoring and collecting mechanism.
Disclosure of Invention
In order to solve the technical problems, the invention provides the following technical scheme:
the invention relates to a cable horizontal side pressure monitoring and collecting mechanism which comprises a base frame, wherein a vertical pressure detection mechanism for detecting the vertical pressure of a cable is arranged on the base frame, and a lateral pressure detection mechanism for detecting the lateral pressure of the cable is also arranged on the base frame.
As a preferred technical scheme of the invention, the vertical pressure detection mechanism comprises a first pressure detection assembly fixed on the base frame, wherein a first pressure detection layer plate is arranged on the first pressure detection assembly, a first detection frame is arranged on the first pressure detection layer plate, and first rotating rollers are arranged on the upper side and the lower side of the first detection frame; a first channel for passing the cable is formed between the two first rotating rollers.
As a preferred technical scheme of the present invention, the lateral pressure detecting mechanism includes a second pressure detecting assembly fixed on the base frame, a second pressure detecting laminate is disposed on the second pressure detecting assembly, a second detecting frame is disposed on the second pressure detecting laminate, vertically disposed second rotating rollers are disposed on both left and right sides of the second detecting frame, and a second channel is formed between the two second rotating rollers.
As a preferred technical solution of the present invention, the first channel and the second channel are butted; and a signal processing device electrically connected with the first pressure detection assembly and the second pressure detection assembly is arranged on one side of the base frame.
As a preferred technical solution of the present invention, the lateral pressure detecting mechanism and the vertical pressure detecting mechanism respectively detect a vertical pressure and a lateral pressure during a cable laying process, and when the detected vertical pressure or lateral pressure is greater than a critical value, the signal processing device emits an alarm sound.
As a preferred embodiment of the present invention, the threshold value is set by setting a lateral pressure of the cable sliding through the arc-shaped sliding plate at a turn as p ═ T/R, where T is a cable traction force and R is a cable bending radius;
when laying in the shaft, p → Pmax ═ Fmax/R;
fmax-maximum longitudinal tension of the cable.
As a preferred embodiment of the present invention, the cable traction T is calculated by a method in which when the horizontal straight line is laid, T is 9.8 μ WL;
when the cable is laid in a horizontal turning way: t is2＝T1eμθWherein T1 and T2 are respectively the traction force before and after turning;
when the vertical bending laying is carried out, when the convex curved surface is in a rising state,
T2＝[9.8WR/(1+μ2)][(1-μ2)+2μeμπ/2]+T1 μπ/e 2，
wherein θ is pi/2;
when the state is a descending state of the convex curved surface,
T2＝[9.8WR/(1+μ2)][2μ-(1-μ2) μπe /2]+T1 μπe /2wherein θ is π/2;
when the concave curved surface is in a rising state,
T2＝T1 μπ/e 2-[9.8WR/(1+μ2)][2μ-(1-μ2) μπe /2]wherein θ is π/2;
when the state is a descending state of the concave curved surface,
T2＝T1 μπe /2-[9.8WR/(1+μ2)][(1-μ2)+2μeμπ/2]wherein θ is π/2;
when the cable is vertically laid, Tmax is 9.8 Wh;
wherein T is the tractive effort, unit: n; t1 and T2 are respectively the traction force before and after turning, the unit is: n; mu is a friction coefficient; θ is the angle of turn or tilt, expressed in "radians"; w is the mass per unit length of the cable, potential: kg/m; l is cable length, unit: and m is selected.
As a preferable technical scheme of the invention, the base frame is provided with a handle.
The invention has the beneficial effects that:
the vertical pressure detection mechanism for detecting the vertical pressure of the cable is arranged on the base frame, the lateral pressure detection mechanism for detecting the lateral pressure of the cable is also arranged on the base frame, the lateral pressure detection mechanism and the vertical pressure detection mechanism respectively detect the vertical pressure and the lateral pressure in the cable laying process, an operator can know the cable form change of a horizontal X axis and a vertical Y axis in the cable laying process in time, timely adjustment is carried out, laying risks possibly existing in the cable are eliminated, the critical value of the vertical pressure or the lateral pressure is obtained through calculation of a detection method of characteristics, when the detected vertical pressure or the detected lateral pressure is larger than the critical value, the signal processing device gives an alarm sound, and the safety in the cable is ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a lateral pressure detecting mechanism of a cable horizontal lateral pressure monitoring and collecting mechanism according to the present invention;
fig. 2 is a schematic structural diagram of a vertical pressure detection mechanism of a cable horizontal side pressure monitoring and collecting mechanism according to the invention.
In the figure: 1. a base frame; 2. a vertical pressure detection mechanism; 3. a lateral pressure detection mechanism; 4. a first pressure detection assembly; 5. a first pressure detection laminate; 6. a first detection frame; 7. a first rotating roller; 8. a second pressure sensing assembly; 9. a second pressure detection laminate; 10. a second detection frame; 11. a second rotating roller; 12. a signal processing device; 13. a handle.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example (b): as shown in fig. 1 and 2, the mechanism for monitoring and acquiring the horizontal side pressure of a cable according to the present invention comprises a base frame 1, wherein a vertical pressure detection mechanism 2 for performing vertical pressure detection on the cable is arranged on the base frame 1, and a lateral pressure detection mechanism 3 for performing lateral pressure detection on the cable is further arranged on the base frame 1; the vertical pressure detection mechanism 3 comprises a first pressure detection component 4 fixed on the base frame 1, a first pressure detection layer plate 5 is arranged on the first pressure detection component 4, a first detection frame 6 is arranged on the first pressure detection layer plate 5, and first rotating rollers 7 are arranged on the upper side and the lower side of the first detection frame 6; a first channel for the cable to pass through is formed between the two first rotating rollers 7; the lateral pressure detection mechanism 3 comprises a second pressure detection assembly 8 fixed on the base frame 1, a second pressure detection layer plate 9 is arranged on the second pressure detection assembly 8, a second detection frame 10 is arranged on the second pressure detection layer plate 9, second rotating rollers 11 which are vertically arranged are arranged on the left side and the right side of the second detection frame 10, a second channel is formed between the two second rotating rollers 11, and the first channel and the second channel are in butt joint; and a signal processing device 12 electrically connected with the first pressure detection assembly 4 and the second pressure detection assembly 8 is arranged on one side of the base frame 1.
The lateral pressure detection mechanism 3 and the vertical pressure detection mechanism 2 respectively detect the vertical pressure and the lateral pressure in the cable laying process, and when the detected vertical pressure or the detected lateral pressure is greater than a critical value, the signal processing device gives out an alarm sound.
The critical value is set by the method that when the cable slides through the arc-shaped sliding plate at a turning position, the lateral pressure is p ═ T/R, wherein T is cable traction force, and R is cable bending radius;
when laying in the shaft, p → Pmax ═ Fmax/R;
fmax-maximum longitudinal tension of the cable.
The method for calculating the cable traction force T is that when the horizontal straight line laying is carried out, T is 9.8 μ WL;
when the cable is laid in a horizontal turning way: t is2＝T1eμθWherein T1 and T2 are respectively the traction force before and after turning;
when the vertical bending laying is carried out, when the convex curved surface is in a rising state,
T2＝[9.8WR/(1+μ2)][(1-μ2)+2μeμπ/2]+T1 μπ/e 2，
wherein θ is pi/2;
when the state is a descending state of the convex curved surface,
T2＝[9.8WR/(1+μ2)][2μ-(1-μ2) μπ/e 2]+T1 μπ/e 2wherein θ is π/2;
when the concave curved surface is in a rising state,
T2＝T1 μπ/e 2-[9.8WR/(1+μ2)][2μ-(1-μ2) μπ/e 2]wherein θ is π/2;
when the state is a descending state of the concave curved surface,
T2＝T1 μπe /2-[9.8WR/(1+μ2)][(1-μ2)+2μeμπ/2]wherein θ is π/2;
when the cable is vertically laid, Tmax is 9.8 Wh;
wherein T is the tractive effort, unit: n or kN; t1 and T2 are respectively the traction force before and after turning, the unit is: n or kN; mu is a friction coefficient; θ is the angle of turn or tilt, expressed in "radians"; w is the mass per unit length of the cable, potential: kg/m; l is cable length, unit: m or km.
A handle 13 is arranged on the base frame 1.
The vertical pressure detection mechanism is arranged on the base frame and used for detecting the vertical pressure of the cable, the lateral pressure detection mechanism is also arranged on the base frame and used for detecting the lateral pressure of the cable, the lateral pressure detection mechanism and the vertical pressure detection mechanism respectively detect the vertical pressure and the lateral pressure in the cable laying process, an operator can know the cable form change of a horizontal X axis and a vertical Y axis in the cable laying process in time, and therefore timely adjustment is conducted, laying risks possibly existing in the cable are eliminated, the critical value of the vertical pressure or the lateral pressure is obtained through the characteristic detection method, when the detected vertical pressure or the detected lateral pressure is larger than the critical value, the signal processing device sends out an alarm sound, and therefore the safety in the cable laying process is guaranteed.
Wherein the second pressure detection component and the first pressure detection component are sensors in two directions of X and Y, and there are 8 cases (in order to reduce interference, the absolute value of X or Y needs to be greater than or equal to 100N to adopt the following rule, for example, the value between-100N and 100N is 0N by default, and is in an original static state when all values are 0):
(1) when X is positive and Y is positive, the lower side roller and the right side roller turn green, the cable 'circle' is close to the lower right corner, and the green roller 'flickers';
(2) when X is positive and Y is negative, the lower side roller and the left side roller turn green, the cable 'circle' is close to the lower left corner, and the green roller 'flickers';
(3) when X is negative and Y is positive, the upper side roller and the right side roller turn green, the cable 'circle' is close to the upper right corner, and the green roller 'flickers';
(4) when X is negative and Y is negative, the upper side roller and the left side roller turn green, the cable 'circle' is close to the upper left corner, and the green roller 'flickers';
(5) when X is positive and Y is 0, the lower side roller turns green, the cable 'circle' is close to the middle of the lower side roller, and the green roller 'flickers';
(6) when X is 0 and Y is positive, the roller on the right side turns green, the cable 'circle' is close to the middle of the right side, and the green roller 'flickers';
(7) when X is negative and Y is 0, the upper side roller turns green, a cable ' circle ' is close to the middle of the upper side roller, and the green roller flickers ';
(8) when X is 0 and Y is negative, the left roller turns green, the cable 'circle' is close to the middle of the left side, and the green roller 'flickers';
the multi-dimensional lateral pressure of the cable and the dynamic motion situation of the cable during laying are calculated through 8 basic algorithms.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a mechanism is gathered in monitoring of cable horizontal side pressure which characterized in that: including bed frame (1), be equipped with on bed frame (1) and carry out vertical pressure detection mechanism (2) that vertical pressure detected to the cable, still be equipped with lateral pressure detection mechanism (3) that carry out lateral pressure detection to the cable on bed frame (1).
2. The cable horizontal side pressure monitoring and collecting mechanism according to claim 1, wherein the vertical pressure detecting mechanism (3) comprises a first pressure detecting assembly (4) fixed on a base frame (1), a first pressure detecting laminate (5) is arranged on the first pressure detecting assembly (4), a first detecting frame (6) is arranged on the first pressure detecting laminate (5), and first rotating rollers (7) are arranged on the upper side and the lower side of the first detecting frame (6); a first channel for passing the cable is formed between the two first rotating rollers (7).
3. The cable horizontal side pressure monitoring and collecting mechanism according to claim 1, wherein the lateral pressure detecting mechanism (3) comprises a second pressure detecting assembly (8) fixed on the base frame (1), a second pressure detecting laminate (9) is arranged on the second pressure detecting assembly (8), a second detecting frame (10) is arranged on the second pressure detecting laminate (9), second rotating rollers (11) which are vertically arranged are arranged on the left side and the right side of the second detecting frame (10), and a second channel is formed between the two second rotating rollers (11).
4. The cable horizontal side pressure monitoring and collecting mechanism according to any one of claims 1 to 3, wherein the first channel and the second channel are butted; and a signal processing device (12) electrically connected with the first pressure detection assembly (4) and the second pressure detection assembly (8) is arranged on one side of the base frame (1).
5. The cable horizontal side pressure monitoring and collecting mechanism according to claim 1, wherein the lateral pressure detecting mechanism (3) and the vertical pressure detecting mechanism (2) respectively detect the vertical pressure and the lateral pressure in the cable laying process, and when the detected vertical pressure or the detected lateral pressure is greater than a critical value, the signal processing device gives an alarm sound.
6. The mechanism of claim 5, wherein the threshold value is set by setting the lateral pressure of the cable sliding through the arc-shaped sliding plate at the turn as p ═ T/R, where T is the cable traction force and R is the cable bending radius;
when laying in the shaft, p → Pmax ═ Fmax/R;
fmax-maximum longitudinal tension of the cable.
7. The mechanism for monitoring and acquiring the lateral pressure of the cable horizontal side according to claim 6, wherein the cable traction force T is calculated by 9.8 μ WL when horizontal straight-line laying is carried out;
when the cable is laid in a horizontal turning way: t is2＝T1eμθWherein T1 and T2 are respectively the traction force before and after turning;
when the vertical bending laying is carried out, when the convex curved surface is in a rising state,
T2＝[9.8WR/(1+μ2)][(1-μ2)+2μeμπ/2]+T1 μπ/e 2wherein θ is pi/2;
when the state is a descending state of the convex curved surface,
T2＝[9.8WR/(1+μ2)][2μ-(1-μ2) μπ/e 2]+T1 μπ/e 2wherein θ is π/2;
when the concave curved surface is in a rising state,
T2＝T1 μπ/e 2-[9.8WR/(1+μ2)][2μ-(1-μ2) μπ/e 2]wherein θ is π/2;
when the state is a descending state of the concave curved surface,
T2＝T1 μπ/e 2-[9.8WR/(1+μ2)][(1-μ2)+2μeμπ/2]wherein θ is π/2;
when the cable is vertically laid, Tmax is 9.8 Wh;
wherein T is the tractive effort, unit: n (or kN); t1 and T2 are respectively the traction force before and after turning, the unit is: n (or kN); mu is a friction coefficient; θ is the angle of turn or tilt, expressed in "radians"; w is the mass per unit length of the cable, potential: kg/m; l is cable length, unit: m (or km).
8. The cable horizontal side pressure monitoring and collecting mechanism according to claim 1, characterized in that a handle (13) is arranged on the base frame (1).
9. The mechanism as claimed in claim 2, wherein the threshold value is set by assuming that the roller is set at the turn during laying, the lateral pressure of the roller on the cable is calculated by the formula: p is approximately equal to 2T sin theta/2, wherein sin theta/2 is S/2R, and p is TS/R; where p is the lateral pressure, unit: n or kN; r is the arc radius of corner gyro wheel setting, unit: m; θ is the average angle of intersection between the rollers, in units: rad (radians); and S is the distance between the rollers.
10. The cable horizontal side pressure monitoring and collecting mechanism according to claim 5, wherein when the cable is laid at a right angle and n rollers are uniformly arranged, the distance between the rollers can be calculated by the following approximate formula, i.e. S ═ pi R/2 (n-1), and p ═ pi T/2 (n-1).
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| CN202110871742.1A CN113959609A (en) | 2021-07-30 | 2021-07-30 | Cable horizontal side pressure monitoring and collecting mechanism |
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| CN202110871742.1A CN113959609A (en) | 2021-07-30 | 2021-07-30 | Cable horizontal side pressure monitoring and collecting mechanism |
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| JPH03173309A (en) * | 1989-11-30 | 1991-07-26 | Sumitomo Densetsu Kk | Cable laying apparatus |
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| JP2002171632A (en) * | 2000-12-04 | 2002-06-14 | R System:Kk | Roller for laying small-bore cable, and mounting method |
| CN102914399A (en) * | 2012-11-09 | 2013-02-06 | 广州供电局有限公司 | Cable laying side pressure monitor and cable turning laying equipment |
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| CN212210309U (en) * | 2020-06-08 | 2020-12-22 | 广东兴能电力投资有限公司 | Cable traction device for cable laying |
-
2021
- 2021-07-30 CN CN202110871742.1A patent/CN113959609A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03173309A (en) * | 1989-11-30 | 1991-07-26 | Sumitomo Densetsu Kk | Cable laying apparatus |
| JPH0638326A (en) * | 1992-07-16 | 1994-02-10 | Showa Electric Wire & Cable Co Ltd | Cable laying method |
| JP2002145598A (en) * | 2000-11-13 | 2002-05-22 | Aichi Corp | Load detector for temporary support device |
| JP2002171632A (en) * | 2000-12-04 | 2002-06-14 | R System:Kk | Roller for laying small-bore cable, and mounting method |
| CN102914399A (en) * | 2012-11-09 | 2013-02-06 | 广州供电局有限公司 | Cable laying side pressure monitor and cable turning laying equipment |
| CN204202793U (en) * | 2014-09-04 | 2015-03-11 | 天津德芃科技集团有限公司 | A kind of cable laying wall pressure pick-up unit |
| CN212210309U (en) * | 2020-06-08 | 2020-12-22 | 广东兴能电力投资有限公司 | Cable traction device for cable laying |
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| Title |
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| 中国煤炭建设协会: "《煤炭建设工法汇编》", 31 March 2016, 煤炭工业出版社, pages: 680 - 681 * |
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