CN101422643A - Shaft Single-rope hoisting drop-proof system - Google Patents
Shaft Single-rope hoisting drop-proof system Download PDFInfo
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- CN101422643A CN101422643A CNA2008101438893A CN200810143889A CN101422643A CN 101422643 A CN101422643 A CN 101422643A CN A2008101438893 A CNA2008101438893 A CN A2008101438893A CN 200810143889 A CN200810143889 A CN 200810143889A CN 101422643 A CN101422643 A CN 101422643A
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Abstract
A vertical shaft single-rope lifting fall arrest system comprises a braking wire cable and a hydraulic dashpot which consists of a second hydraulic cylinder and a hydraulic circuit. The hydraulic cylinder is fixed on a shaft tower platform; one end of the braking wire cable is fixed on the upper end of a hollow piston rod by a rope clamp; the braking wire cable is suspended at the bottom of the shaft and tightened after passing through the hollow part of the hollow piston rod; the upper cavity and the lower cavity of the second hydraulic cylinder are communicated; with the function of the hydraulic circuit, instant massive attack can be effectively buffered and when hydraulic liquid passes, great energy consumption is produced so that attack towards the system can be reduced and the kinetic energy of falling containers can be consumed away so as to have the buffer function and protect the personnel safety.
Description
Technical field:
The present invention relates to a kind of underground mining vertical shaft for mine single-rope hoisting anti-drop system.
Background technology:
According to the requirement of design specification, when the underground mining vertical shaft for mine adopts single-rope hoisting, in order to prevent hoist ropes break, serious accident takes place, anti-drop system must be set.The effect of anti-drop system is when hoist ropes break, hoisting container is braked on check band reliably, and should be guaranteed personal safety in this process, also will guarantee the person not to be produced injury.Guarantee the person is not produced injury, just must control and subtract acceleration and be no more than-5m/s
2The control that subtracts acceleration in anti-drop system realizes by buffer.Therefore, buffer one of the vitals that in anti-drop system, is absolutely necessary, the braking characteristic of catching device, Changing Pattern depend primarily on the performance of buffer.Buffer should possess three important performances: promptly should have reliable and stable performance; Should have easy to adjust, the performance accurately of brake force; Also should have good shock-absorbing capacity.
Use to such an extent that the most general buffer is a steel wire rope list groove twin-screw buffer in present domestic mine.The sort buffer device is the kinetic energy that merit that flexural deformation resistance when utilizing buffer rope by buffer and frictional resistance are done is offset the tenesmus container.Brake force is to regulate by the twin-screw in the buffer.Test at the cage anti-drop system that is carried out in the past, generally believe that also there are some problems in the sort buffer device: 1, shock-absorbing capacity instability; 2, the brake force mediation process is loaded down with trivial details; 3, be difficult to access brake force accurately.Therefore be necessary to carry out perfect.
Summary of the invention:
Technical problem to be solved by this invention is: at the deficiency of existing single groove twin-screw buffer, provide that a kind of shock-absorbing capacity is reliable and stable, brake force is easy to adjust, shaft Single-rope hoisting drop-proof system accurately.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of shaft Single-rope hoisting drop-proof system, comprise brake wire, be characterized in: also comprise hydraulic bjuffer, hydraulic circuit between it is reached by two hydraulic cylinders is formed, this hydraulic cylinder comprises cylinder body, hollow piston bar and self-aligning spherical support seat, this self-aligning spherical support seat is fixed in the headframe platform, cylinder body is fixed on the self-aligning spherical support seat, the hollow piston bar runs through cylinder body and self-aligning spherical support seat, and its upper end is installed with rope clamp, after one end of brake wire is fixed in the upper end of hollow piston bar by rope clamp 4, pass and be fixed in the shaft bottom from the hollow part of hollow piston bar, this hollow piston bar has cross bar the inner chamber of cylinder body is divided into two chambeies up and down, is communicated with respectively between the epicoele of this two hydraulic cylinder and between the cavity of resorption;
Above-mentioned hydraulic circuit is: the oil-in of oil pump links to each other with fuel tank through filter, the oil-out of oil pump links to each other with the cavity of resorption of two hydraulic cylinders through two-position two-way solenoid valve, check valve, the oil-out of this oil pump links to each other with fuel tank through overflow valve, the cavity of resorption of this hydraulic cylinder links to each other with accumulator through stop valve, unidirectional flow speed control valve, the cavity of resorption of this hydraulic cylinder links to each other with the epicoele of hydraulic cylinder through overflow valve, adjustable damper, the epicoele of this hydraulic cylinder links to each other with this top petrol tank through overflow valve, and this top petrol tank is communicated with the epicoele of two hydraulic cylinders through stop valve, check valve.The cavity of resorption of above-mentioned two hydraulic cylinders also is connected with Pressure gauge.
So, the hydraulic bjuffer of this anti-drop system utilizes the design of hydraulic cushion principle, and two kinds of forms of energy consumption and energy storage have both at the same time; Have reliable and stable good shock-absorbing capacity, brake force is easy to adjust, accurate, solves the technical problem that steel wire rope list groove twin-screw buffer exists effectively, has also simplified Process configuration simultaneously, has good serviceability and promotional value.
Description of drawings:
Fig. 1 is a hydraulic cylinder structure schematic diagram of the present invention.
Fig. 2 is a hydraulic control schematic diagram of the present invention.
The specific embodiment:
The present invention is a kind of shaft Single-rope hoisting drop-proof system, comprises brake wire and hydraulic bjuffer, and this hydraulic bjuffer is made up of two hydraulic cylinders and hydraulic circuit two parts.Referring to shown in Figure 1, as seen from the figure, hydraulic cylinder comprises self-aligning spherical support seat 1, cylinder body 2 and hollow piston bar 3.Self-aligning spherical support seat 1 is fixed in the headframe platform, cylinder body 2 is fixed on the self-aligning spherical support seat 1, hollow piston bar 3 runs through cylinder body 2 and self-aligning spherical support seat 1, and its upper end is installed with rope clamp 4, after one end of brake wire 5 is fixed in the upper end of hollow piston bar 3 by rope clamp 4, pass from the hollow part of hollow piston bar 3, overhang the shaft bottom and strain, and this hollow piston bar 3 has cross bar 31 inner chamber of cylinder body 2 is divided into two chambeies 21,22 up and down by screw rod.The corresponding hydraulic cylinder of brake wire.
In addition referring to Fig. 2, as seen from the figure, this hydraulic circuit mainly is made up of two hydraulic cylinders, adjustable damper 6, Pressure gauge 7, unidirectional flow speed control valve 8, accumulator 9, two-position two-way solenoid valve 10, oil pump 11, fuel tank 12, top petrol tank 13, overflow valve 14, check valve 15, stop valve 16 etc.
The oil-in of this oil pump 11 links to each other with fuel tank 12 through filter 17, the oil-out of oil pump 11 is through two-position two-way solenoid valve 10, check valve 151 links to each other with the cavity of resorption 22 of two hydraulic cylinders, simultaneously, the oil-out of oil pump 11 links to each other with fuel tank 12 through overflow valve 141, the cavity of resorption 22 of this hydraulic cylinder is through stop valve 161, unidirectional flow speed control valve 8 links to each other with accumulator 9, this Pressure gauge 7 links to each other with hydraulic cylinder cavity of resorption 22, the cavity of resorption 22 of this hydraulic cylinder is through overflow valve 142, adjustable damper 6 links to each other with the epicoele 21 of hydraulic cylinder, the epicoele 21 of this hydraulic cylinder links to each other with this top petrol tank 13 through overflow valve 143, and this top petrol tank 13 is through stop valve 162, check valve 152 is communicated with the epicoele 21 of two hydraulic cylinders.This unidirectional flow speed control valve 8 is made up of check valve 81, choke valve 82.Epicoele, the cavity of resorption of this two hydraulic cylinder are communicated with respectively, guarantee that the power that offers two check bands under its original state equates, buffering is also comparatively balanced in braking procedure.
Hydraulic oil is supplied with hydraulic cylinder cavity of resorption 22 and accumulator 9 by oil pump 11, check valve 151 by fuel tank 12, and system oil pressure is set up by overflow valve 141.Give system's pressurize, repairing by accumulator 9 generally speaking.When the pressure of Pressure gauge 7 is lower than the setting of overflow valve 141, will open by the oil pump 11 and the two-position two-way solenoid valve 10 of the control of pressure switch (not shown) at once, carry out repairing for the cavity of resorption 22 and the accumulator 9 of hydraulic cylinder.The hydraulic oil of the epicoele 21 of hydraulic cylinder is then supplied with and is covered through check valve 152 by top petrol tank 13.
Its operation principle is: when the container of tenesmus is caught check band by catching device in less than 0.2 second time after, impact load passes on the hollow piston bar 2 at once, moment, hydraulic cylinder cavity of resorption 22 pressure sharply rose, and hydraulic oil enters accumulator 9 rapidly through the check valve 81 in the unidirectional flow speed control valve 8.When system pressure still continues to rise, and when rising to the force value that overflow valve 142 sets up, hydraulic oil flows into top petrol tanks 13 and release by overflow valve 143 again through overflow valve 142, adjustable damper 6.
From the above, accumulator 9 has cushioned the intense impact of moment effectively, and the resistance of adjustable resistance device 6 is bigger, when hydraulic oil passes through, will produce very big energy consumption.This hydraulic bjuffer utilizes these approach exactly, reduces the impact to system, the kinetic energy of the container of tenesmus is consumed, thereby play cushioning effect.
Claims (4)
1, a kind of shaft Single-rope hoisting drop-proof system, comprise brake wire (5), it is characterized in that: also comprise hydraulic bjuffer, hydraulic circuit between it is reached by two hydraulic cylinders is formed, this hydraulic cylinder comprises self-aligning spherical support seat (1), cylinder body (2), with hollow piston bar (3), this self-aligning spherical support seat (1) is fixed in the headframe platform, cylinder body (2) is fixed on the self-aligning spherical support seat (1), hollow piston bar (3) runs through cylinder body (2) and self-aligning spherical support seat (1), and its upper end is installed with rope clamp (4), after one end of brake wire (5) is fixed in the upper end of hollow piston bar (3) by rope clamp (4), pass from the hollow part of hollow piston bar (3) and to be fixed in the shaft bottom, this hollow piston bar (3) has cross bar (31) inner chamber of cylinder body (2) is divided into two chambeies (21 up and down, 22), be communicated with respectively between the epicoele of this two hydraulic cylinder and between under the cavity of resorption.
2, shaft Single-rope hoisting drop-proof system according to claim 1, it is characterized in that: described hydraulic circuit is: the oil-in of oil pump (11) links to each other with fuel tank (12) through filter (17), the oil-out of oil pump (11) is through two-position two-way solenoid valve (10), check valve (151) links to each other with the cavity of resorption (22) of two hydraulic cylinders, the oil-out of this oil pump (11) links to each other with fuel tank (12) through overflow valve (141), the cavity of resorption of this hydraulic cylinder (22) is through stop valve (161), unidirectional flow speed control valve (8) links to each other with accumulator (9), the cavity of resorption of this hydraulic cylinder (22) is through overflow valve (142), adjustable damper (6) links to each other with the epicoele (21) of hydraulic cylinder, the epicoele of this hydraulic cylinder (21) links to each other with this top petrol tank (13) through overflow valve (143), and this top petrol tank (13) is through stop valve (162), check valve (152) is communicated with the epicoele (21) of two hydraulic cylinders.
3, shaft Single-rope hoisting drop-proof system according to claim 2 is characterized in that: the cavity of resorption of described two hydraulic cylinders (22) is connected with Pressure gauge (7).
4, shaft Single-rope hoisting drop-proof system according to claim 2 is characterized in that: described unidirectional flow speed control valve (8) is made up of check valve (81), choke valve (82).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101438893A CN101422643A (en) | 2008-12-10 | 2008-12-10 | Shaft Single-rope hoisting drop-proof system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101438893A CN101422643A (en) | 2008-12-10 | 2008-12-10 | Shaft Single-rope hoisting drop-proof system |
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| Publication Number | Publication Date |
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| CN101422643A true CN101422643A (en) | 2009-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101438893A Pending CN101422643A (en) | 2008-12-10 | 2008-12-10 | Shaft Single-rope hoisting drop-proof system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106798986A (en) * | 2017-02-13 | 2017-06-06 | 国网山东省电力公司蓬莱市供电公司 | Power test is ascended a height and uses anti-fall device |
| GB2567500A (en) * | 2017-10-16 | 2019-04-17 | Checkmate Lifting & Safety Ltd | Support post assembly |
| CN110130311A (en) * | 2019-06-12 | 2019-08-16 | 沙洲职业工学院 | A kind of strong rammer tup that lifting power demand is incremental |
| CN113750380A (en) * | 2021-09-10 | 2021-12-07 | 广东电网有限责任公司 | Electric power tower |
-
2008
- 2008-12-10 CN CNA2008101438893A patent/CN101422643A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106798986A (en) * | 2017-02-13 | 2017-06-06 | 国网山东省电力公司蓬莱市供电公司 | Power test is ascended a height and uses anti-fall device |
| GB2567500A (en) * | 2017-10-16 | 2019-04-17 | Checkmate Lifting & Safety Ltd | Support post assembly |
| GB2567500B (en) * | 2017-10-16 | 2022-06-01 | Checkmate Lifting & Safety Ltd | Support post assembly |
| CN110130311A (en) * | 2019-06-12 | 2019-08-16 | 沙洲职业工学院 | A kind of strong rammer tup that lifting power demand is incremental |
| CN110130311B (en) * | 2019-06-12 | 2024-02-13 | 沙洲职业工学院 | Dynamic compaction hammer head with increasing lifting force requirement |
| CN113750380A (en) * | 2021-09-10 | 2021-12-07 | 广东电网有限责任公司 | Electric power tower |
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Open date: 20090506 |