CN203719808U - Apparatus for improving braking torque of elevator - Google Patents
Apparatus for improving braking torque of elevator Download PDFInfo
- Publication number
- CN203719808U CN203719808U CN201420027126.3U CN201420027126U CN203719808U CN 203719808 U CN203719808 U CN 203719808U CN 201420027126 U CN201420027126 U CN 201420027126U CN 203719808 U CN203719808 U CN 203719808U
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- CN
- China
- Prior art keywords
- sliding block
- guide runner
- braking torque
- positioning sliding
- circular arc
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- 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.)
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- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The utility model relates to an apparatus for improving a braking torque of an elevator. The apparatus comprises a steel wire rope, a dynamometer, a positioning slide block and a guiding slide block, wherein the positioning slide block and the guiding slide block are embedded into a roller circular plate of the elevator. The installing method of the apparatus is characterized in that the positioning slide block and the guiding slide block are installed at the roller circular plate of the elevator; after one end of the steel wire rope is fixed at a circumferential hole of the roller circular plate of the elevator, the other end is led out by a guiding slot; at the moment that the roller of the elevator is pulled to make rotation, the tensile force of the other end of the steel wire rope is measured and a braking torque is calculated. The provided apparatus has advantages of easy force arm obtaining, precise measured data, simple structure, simple and convenient operation, and high adaptability and can be widely applied to braking torque measurement of the large machinery like a mine hoist and the like.
Description
Technical field
The utility model relates to a kind of device of measuring big machinery braking moment, especially a kind of device that is applicable to the measurement of brake for lifting machine braking moment.
Background technology
Mine hoist is the throat of the transportations such as Coal Mines, personnel and material, and its degree of reliability directly has influence on mine and produces and personal security, and detent is the important safety protective device of hoister.Braking moment is one of critical performance parameters of brake for lifting machine.< < safe coal rules > > regulation: when the service brake of puffer and safety brake braking, the moment producing and the actual ratio K value that promotes dead weight turning moment must not be less than 3.Braking moment needs to carry out for 1 year technology mensuration one time in accordance with regulations.This is because dish spring replacings of detent, brake clearance adjustment, brake disc all may be caused that braking moment changes, the dead weight turning moment that makes braking moment be less than 3 times, thereby initiation brake failure accident by oil pollution etc.Therefore often measuring braking moment is the important leverage that guarantees brake for lifting machine safety.
The conventional wire rope being fixed on cylinder disk that pulls in production, the method that the elevator drum disc radius of usining calculates braking moment as the arm of force is measured braking moment, this assay method utmost point is difficult to ensure the vertical of card wire rope and the arm of force, and error ratio is larger, and accuracy of measurement is low.The patent No. is that ZL 200710025204.0 discloses a kind of braking moment involute shaped measurement mechanism of large-sized brake.This device utilizes lifting jack to produce driving force, and driving force acts on to be raised on the involute urve shape pressure part that machine cylinder disk exradius is base radius, measures braking moment.But because the Accurate Shaping of the involute urve face of involute urve pressure part is very difficult, add that the acquisition of the arm of force in actual production is very difficult, therefore measuring accuracy is low.Even if above-mentioned measuring method and device are further improved, if the patent No. is the installation method of the disclosed a kind of contactless involute urve shape braking moment of ZL 201010555300.8, but fundamentally do not solve yet their deficiency.Therefore the braking torque for mine hoist base measurement mechanism that provides a kind of accuracy higher, easy and simple to handle is provided badly.
Summary of the invention
The purpose of this utility model is according to the weak point in prior art, provide a kind of simple in structure, installation and easy to operate, measure the device of measuring accurately braking torque for mine hoist base.
The utility model is achieved by the following technical solution.
Measure a device for braking torque for mine hoist base, comprise wire rope, dynamometer, it is characterized in that: also comprise the guide runner group being formed by positioning sliding block and guide runner serial connection being embedded on elevator drum disk.
Described positioning sliding block is equipped with shape gathering sill identical, that xsect is arc with the top of guide runner; Described positioning sliding block is equipped with shape locating slot identical, that xsect is rectangle with the bottom of guide runner; The circular arc that the bottom sides line of described locating slot forms is identical with elevator drum disc radius; The xsect geometric center line of described gathering sill is circular arc, and the concyclic heart of circular arc forming with the bottom sides line of locating slot so that positioning sliding block install with guide runner after gathering sill and the elevator drum disk of formation be concentric circles.
The distance of the circular arc that the circular arc that the bottom sides line of described locating slot forms and the xsect geometric center line of gathering sill form is greater than 20mm, and object is to guarantee that slide block has enough intensity.
The circular arc that the bottom sides line of described locating slot forms equates with the central angle of the circular arc that the xsect geometric center line of described gathering sill forms, is 10 ° ~ 15 °; The joining in described positioning sliding block and the sideline, both sides of guide runner overlaps with the center of circle of the circular arc that the bottom sides line of described locating slot forms, so that positioning sliding block can obtain complete continuous gathering sill while being connected in series with guide runner.
Described positioning sliding block and guide runner one side are equipped with the locating piece with connection holes; Described positioning sliding block and guide runner opposite side are equipped with pilot hole; The center of circle of described connection holes equates with the distance of the center of circle of pilot hole to the center of circle of the bottom sides line formation circular arc of described locating slot; The distance d of the contiguous side of slide block is arrived in the center of circle of the connection holes of described locating piece with the distance d1 of side and the center of circle of pilot hole to slide block
2identical, so that obtain under complete continuous gathering sill prerequisite after being connected in series with guide runner at positioning sliding block, make installation and removal easy.
Total central angle of the circular arc being formed centrally in the gathering sill cross section geometric on described positioning sliding block and guide runner top is not less than 30 °, so that wire rope has sufficient stroke space to maintain tangential direction in drawing process.
The fitting operation step of a kind of device of measuring braking torque for mine hoist base of the present utility model is as follows:
A) after the locating slot of positioning sliding block and elevator drum disk clearance fit are nested, by register pin, be hinged in the circumferential apertures of elevator drum disk;
B) after the locating slot of guide runner and elevator drum disk clearance fit are nested, the center line of pilot hole of guide runner and the center line of the connection holes on the locating piece of positioning sliding block are overlapped, then that pilot hole and connection holes is hinged;
C) by the described mounting means of step b), install successively other required guide runners on elevator drum disk;
D), after wire rope one end is fixed in the circumferential apertures that on elevator drum disk, distance positioning sliding block is close to, the other end is drawn through positioning sliding block and the common gathering sill forming of guide runner;
E) in the tangent direction of the other end of wire rope and gathering sill bottom, apply pulling force;
F) pull elevator drum to rotate moment, measuring the pulling force size of the wire rope other end, by gathering sill radius and pulling force size, calculating braking moment.
The principle of work of a kind of device of measuring braking torque for mine hoist base of the present utility model is as follows: after the locating slot of positioning sliding block and elevator drum disk clearance fit are nested, be hinged in the circumferential apertures of elevator drum disk by register pin; After the locating slot of guide runner and elevator drum disk clearance fit are nested, the center line of pilot hole of guide runner and the center line of the connection holes on the locating piece of positioning sliding block are overlapped, pilot hole and connection holes is hinged; By mounting means described above, install successively other required guide runners on elevator drum disk, after being connected in series with guide runner, positioning sliding block obtained complete continuous gathering sill, circular arc and the concyclic heart of elevator drum disk that the xsect geometric center line of this gathering sill forms.After wire rope one end is fixed in the circumferential apertures that on elevator drum disk, distance positioning sliding block is close to, the other end is drawn through positioning sliding block and the common gathering sill forming of guide runner; In the tangent direction of the other end of wire rope and gathering sill bottom, apply pulling force; Pulling elevator drum to rotate moment, measure the pulling force size of the wire rope other end, by gathering sill radius and pulling force size, calculate braking moment, the size of braking moment equals to be applied to the product of radius of the formed circular arc of xsect geometric center line of pulling force on wire rope and gathering sill.
Compared with prior art, the beneficial effects of the utility model are: the arm of force obtains easily, and measurement data is accurate, and simple in structure, easy and simple to handle, and strong adaptability can be widely used in comprising the measurement of the big machinery braking moment of mine hoist.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of measuring the device of braking torque for mine hoist base of the present utility model.
Fig. 2 is the structural representation of positioning sliding block.
Fig. 3 is the structural representation of guide runner.
Fig. 4 is schematic diagram after positioning sliding block is connected in series with three guide runners.
In figure: 1, elevator drum 2, dynamometer 3, wire rope 4, locating slot 5, gathering sill 6, guide runner 7, connection holes 8, locating piece 9, pin 10, positioning sliding block 11, register pin 12, pilot hole 13, circumferential apertures 14, steel cable clamp 15, pin 16, elevator drum disk.
Embodiment
Below in conjunction with the embodiment in accompanying drawing, the utility model-" a kind of device of measuring braking torque for mine hoist base " is described further.
As shown in Figure 2,10 ° of fan-shaped metal positioning sliding block 10 left parts of central angle are provided with pilot hole 12, and coplanar right part is provided with the locating piece 8 that contains connection holes 7; Pilot hole 12 is to the distance d with side
1arrive positioning sliding block 10 with the distance d of side with connection holes 7
2be 5mm; Positioning sliding block 10 tops that center is provided with through hole are provided with the gathering sill 5 that xsect is comprised of three sections of circular arcs; Positioning sliding block 10 bottoms are provided with the locating slot 4 that width is identical with elevator drum disk 16 thickness; The distance of the circular arc that the circular arc that the bottom sides line of locating slot 4 forms and the xsect geometric center lines of gathering sill 5 form is 25mm.
As shown in Figure 1, a kind of measurement braking torque for mine hoist base of the utility model device comprises wire rope, dynamometer, a positioning sliding block 10 and three guide runners 6.After locating slot 4 and elevator drum disk 16 clearance fit of described positioning sliding block 10 are nested, by register pin 11, be hinged in the circumferential apertures 13 of elevator drum disk 16; After locating slot 4 and elevator drum disk 16 clearance fit of described guide runner 6 are nested, by pin 7, the pilot hole 12 of guide runner 6 is connected with the connection holes 7 of positioning sliding block 10, guide runner 6 and positioning sliding block 10 are hinged; By mounting means described above, install successively other two guide runners 6 on elevator drum disk 16, after being connected in series with guide runner, positioning sliding block obtained complete continuous gathering sill, circular arc and the concyclic heart of elevator drum disk that the xsect geometric center line of this gathering sill forms.Circumferential apertures 13 places at elevator drum disk 16 near the elevator drum disk of positioning sliding block 10, wire rope 3 one end sell 15 and steel cable clamp 14 be connected with elevator drum disk 16, the other end is drawn through gathering sill 5, at the other end of wire rope 3, applies the pulling force parallel with elevator drum disk 16 tangential directions; Pull elevator drum to rotate moment, measuring the pulling force size of the wire rope other end, by gathering sill radius and pulling force size, calculating braking moment.
Claims (9)
1. a device of measuring braking torque for mine hoist base, comprise wire rope (3), dynamometer (2), it is characterized in that: also comprise the guide runner group being formed by positioning sliding block (10) and guide runner (6) serial connection being embedded on elevator drum disk (16).
2. according to a kind of device of measuring braking torque for mine hoist base of claim 1, it is characterized in that: described positioning sliding block (10) is equipped with shape gathering sill (5) identical, that xsect is arc with the top of guide runner (6); Described positioning sliding block (10) is equipped with shape locating slot (4) identical, that xsect is rectangle with the bottom of guide runner (6); The circular arc that the bottom sides line of described locating slot (4) forms is identical with elevator drum disk (16) radius; The xsect geometric center line of described gathering sill (5) is circular arc, and the concyclic heart of circular arc forming with the bottom sides line of locating slot (4).
3. according to a kind of device of measuring braking torque for mine hoist base of claim 2, it is characterized in that: the distance of the circular arc that the circular arc that the bottom sides line of described locating slot (4) forms and the xsect geometric center line of gathering sill (5) form is greater than 20mm.
4. according to a kind of device of measuring braking torque for mine hoist base of claim 2, it is characterized in that: the circular arc that the bottom sides line of described locating slot (4) forms equates with the central angle of the circular arc that the xsect geometric center line of described gathering sill (5) forms, is 10 ° ~ 15 °.
5. according to a kind of device of measuring braking torque for mine hoist base of claim 1, it is characterized in that: the joining in described positioning sliding block (10) and the sideline, both sides of guide runner (6) overlaps with the center of circle of the circular arc that the bottom sides line of described locating slot (4) forms.
6. according to a kind of device of measuring braking torque for mine hoist base of claim 1, it is characterized in that: described positioning sliding block (10) is equipped with the locating piece (8) with connection holes (7) with guide runner (6) one sides; Described positioning sliding block (10) is equipped with pilot hole (12) with guide runner (6) opposite side.
7. according to a kind of device of measuring braking torque for mine hoist base of claim 6, it is characterized in that: the distance that the center of circle of the center of circle of described connection holes (7) and pilot hole (12) forms the center of circle of circular arc to the bottom sides line of described locating slot (4) equates; The center of circle of described connection holes (7) is the distance d with side to slide block
1with the center of circle of pilot hole (12) the distance d to the contiguous side of slide block
2equate.
8. according to a kind of device of measuring braking torque for mine hoist base of claim 1, it is characterized in that: described in be embedded in the circular arc that gathering sill (5) the cross section geometric line of centres on the top of the guide runner group being formed by positioning sliding block (10) and guide runner (6) serial connection on elevator drum disk (16) forms total central angle be not less than 30 °.
9. according to a kind of device of measuring braking torque for mine hoist base of claim 1, it is characterized in that: described positioning sliding block (10) is hinged on by register pin (11) in the circumferential apertures (13) of elevator drum disk (16) after being nested by locating slot (4) and elevator drum disk (16) clearance fit; After described guide runner (6) is nested by locating slot (4) and elevator drum disk (16) clearance fit, the center line of pilot hole (12) of guide runner (6) and the center line of the connection holes (7) on the locating piece (8) of positioning sliding block (10) are overlapped, then that pilot hole (12) and connection holes (7) is hinged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420027126.3U CN203719808U (en) | 2014-01-17 | 2014-01-17 | Apparatus for improving braking torque of elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420027126.3U CN203719808U (en) | 2014-01-17 | 2014-01-17 | Apparatus for improving braking torque of elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203719808U true CN203719808U (en) | 2014-07-16 |
Family
ID=51158947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420027126.3U Expired - Fee Related CN203719808U (en) | 2014-01-17 | 2014-01-17 | Apparatus for improving braking torque of elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203719808U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743519A (en) * | 2014-01-17 | 2014-04-23 | 河南理工大学 | Method and device for measuring braking torque of hoister |
-
2014
- 2014-01-17 CN CN201420027126.3U patent/CN203719808U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743519A (en) * | 2014-01-17 | 2014-04-23 | 河南理工大学 | Method and device for measuring braking torque of hoister |
| CN103743519B (en) * | 2014-01-17 | 2015-10-21 | 河南理工大学 | A kind of method and device measuring braking torque for mine hoist base |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20160117 |
|
| EXPY | Termination of patent right or utility model |