CN2319388Y - Compensating pulley device - Google Patents
Compensating pulley device Download PDFInfo
- Publication number
- CN2319388Y CN2319388Y CN 98203572 CN98203572U CN2319388Y CN 2319388 Y CN2319388 Y CN 2319388Y CN 98203572 CN98203572 CN 98203572 CN 98203572 U CN98203572 U CN 98203572U CN 2319388 Y CN2319388 Y CN 2319388Y
- Authority
- CN
- China
- Prior art keywords
- bearing
- self
- pulley
- compensating
- composite material
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a compensating pulley device of a line and rope tension device for electrified railway contact nets, comprising a compensating pulley, a bearing, a pulley shaft, and a bearing press cover. The bearing is a sliding shaft sleeve made of self-lubricating composite material. An antifriction ring which is made of self-lubricating composite material is arranged in a groove on the inner end surface of the bearing press cover. The self-lubricating composite material is composite material which adopts alloy steel as a base, copper ball powder as an intermediate layer, and antifriction material as packing material. The utility model is suitable for the working condition with low speed and large load and the operating condition that contact lines and ropes slowly change with the influence of environment and temperature. The utility model has the advantages of no need of maintenance, long service life, and low operating cost.
Description
The utility model relates to line, the rope tension compensating mechanism of electrification railway contact net, particularly relates to the compensating pulley assembly of tension compensating mechanism.
The cast anchor tension force of place's compensation wire, rope of line, the rope that compensating pulley assembly is used for electrification railway contact net makes it keep steady state value.It is installed in the open, at dust storm, drench with rain, work under the natural conditions that solar radiation etc. is abominable.The line of railway contact line, rope generation telescopic variation influenced by ambient temperature, its variation is very slow.Contacted netting twine, rope tensioner, many customs adopt band rolling ball bearing formula compensating pulley assembly in the past.This compensating pulley assembly has two assembly pulley (see figure 1)s, three assembly pulley (see figure 2)s, forms such as four assembly pulley (see figure 3)s.Each assembly pulley (see figure 4) comprises tension pulley 7, bearing 4, and sheave shaft 1, bearing gland 2 is fixed on bearing gland 2 on the tension pulley 7 with flathead screw 5, has O type rubber seal 8 on the bearing gland 2.The bearing 4 of this assembly pulley uses is rolling ball bearing entad, and this bearing need regularly give oil injecting lubricating, as not oiling on schedule, original lubricating oil is because of leaking gradually in the pulley bearings, the ball ball forms in the ball-and-socket inner chamber and do to rotate, and adds the greasy filth that causes because of dust etc. and can not thoroughly clean, and makes bearing drag increase, rotate dumb, driving efficiency reduces, and causes that finally contact netting twine, Suo Gaodu reduce the elasticity variation, so this is a big shortcoming of rolling ball bearing compensation pulley group.In addition, owing to need artificial oiling regularly, time-consuming taking a lot of work, economic cost is also very high.
Contact system is established an anchor section for per 1.5 kilometers, and one group of compensating pulley assembly all need respectively be installed in each anchor section two ends.This shows that the quantity of required compensating pulley assembly is sizable.According to preliminary investigation, present China has built up the electrified railway length that puts into effect and has reached more than 10,000 kilometer, in every group of pulley gear 6 pulleys are installed, then need more than 10 ten thousand of tension pulleys, the maintenance in 1 year of each tension pulley once, only cost of lube and labour cost need more than 60 yuan approximately, and like this, only the cost of maintenance of tension pulley just need units up to a million for 10,000 kilometers long electrification railway contact nets.
In addition, pulley compensating device is the key equipment of unique net constant tension of keeping in touch.Assembly pulley is installed in apart from ground about 7 meters high-altitude, and the maintenance oiling is very difficult, in the past because of pulley oiling in time caused frictional resistance to increase, cause contact wire not enough and loose because of tension force, it is not smooth that locomotive is got stream, frequent off-line, arcing, makes the contact wire burn, influences service life, assembly pulley clamping stagnation when serious, cause the broken string accident, cut off traffic, the general recovery needs 4～8 hours, if occur in busy transport artery, its direct economic loss can reach up to ten million units.
The purpose of this utility model is the shortcoming that overcomes prior art, and a kind of oil lubrication, non-maintaining compensating pulley assembly of need not is provided.
Compensating pulley assembly of the present utility model comprises tension pulley, bearing, sheave shaft, bearing gland with seal ring, described sheave shaft has spacing crossette, described bearing is the sliding shaft sleeve of being made by self-lubricating composite that is installed on the described spacing crossette, on described bearing gland and the contacted side of described spacing crossette the anti-friction ring of being made by self-lubricating composite is housed.
Compensating pulley assembly of the present utility model wherein has groove on bearing bonnet and the contacted side of described spacing crossette, described anti-friction ring places in this groove.
Compensating pulley assembly of the present utility model, wherein said spacing crossette has annular groove.
Compensating pulley assembly of the present utility model, wherein said self-lubricating composite be a kind of be matrix with the alloy steel, the copper ball powder is that interlayer, antifriction material are the composite material of weighting material.
Compensating pulley assembly of the present utility model is suitable for being used for the mode of operation of contact wire, rope slow variation influenced by ambient temperature under the service conditions of slow speed of revolution, big load.This compensating pulley assembly need not oiling, and freedom from repairs does not have the defective of above-mentioned existing oiling pulley.Can save oiling cost of maintenance units up to a million every year, and can avoid frequent off-line, arcing that prior art noted earlier exists, make defective such as contact wire burn make the economic loss of punishing severely of depositing.Compensating pulley assembly long service life of the present utility model has greatly reduced operation cost, is the desirable tension compensating mechanism of contact system.
Below with reference to accompanying drawings the utility model is described in detail.
Fig. 1 to Fig. 3 is three kinds of patterns of compensating pulley assembly.
Fig. 4 is the compensating pulley assembly of prior art, and entad rolling ball bearing is housed.
Fig. 5 is the constructional drawing of compensating pulley assembly of the present utility model.
Its compensating pulley assembly is provided with three kinds of forms of a tool (seeing Fig. 1-3) in contact system in electrification railway contact net.
Fig. 4 is equipped with the entad compensating pulley assembly of rolling ball bearing, and its structure has been done detailed introduction in front, just repeats no more at this.
Fig. 5 shows compensating pulley assembly of the present utility model, it comprise in order to its outer race support the tension pulley 7 of line, the rope of contact system, plain bearing 6, the sheave shaft of making by self-lubricating composite 1 and bearing gland 2 with seal ring 8 with spacing crossette.Described plain bearing 6 is arranged between the spacing crossette of the wheel hub centre hole of tension pulley 7 and sheave shaft 1.On bearing gland 2 and the contacted side of described spacing crossette, have groove, the anti-friction ring of being made by self-lubricating composite 3 is housed in this groove.Screw 5 in the screw of the wheel hub of bearing gland 2 by being screwed into tension pulley 7 is fixed on the wheel hub of tension pulley 7.Described spacing crossette has annular groove, to reduce the friction between itself and the described plain bearing 6.
Described self-lubricating composite be a kind of be matrix with the alloy steel, the copper ball powder is that interlayer, antifriction material are the novel mechanical material of construction that the composite material that fills thing forms of going to market, this material has advantages of high bearing capacity and resistance to abrasion, extremely low friction coefficient and good from and " anti-creep " performance, and have the excellent properties such as temperature operating range of very strong resistance to corrosion and broad.The axle sleeve made from this composite material replaces the rolling ball bearing that adopts at present, does not need oil injecting lubricating in the operation, and its driving efficiency can not reduce, and can make contact suspension keep the good technical state for a long time.
The tension pulley that adopts this composite material to produce, after tested: its intensity and driving efficiency meet the technical requirements of regulation in " iron mark " fully; Its productive costs slightly reduces than the antifriction-bearing box pulley.
Claims (4)
1, a kind of compensating pulley assembly, it comprises tension pulley (7), bearing, sheave shaft (1) has the bearing gland (2) of seal ring, it is characterized in that, described sheave shaft has spacing crossette, described bearing is the sliding shaft sleeve of being made by self-lubricating composite (6) that is installed on the described spacing crossette, on bearing gland (2) and the contacted side of described spacing crossette, is provided with the anti-friction ring of being made by self-lubricating composite (3).
2, compensating pulley assembly according to claim 1 is characterized in that, has groove on bearing gland (2) and the contacted side of described spacing crossette, and described anti-friction ring (3) places in this groove.
3, compensating pulley assembly according to claim 1 and 2 is characterized in that, described spacing crossette has annular groove.
4, compensating pulley assembly according to claim 3 is characterized in that, described self-lubricating composite be a kind of just be matrix with alloy, the copper ball powder is that interlayer, antifriction material are the composite material of weighting material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98203572 CN2319388Y (en) | 1998-04-21 | 1998-04-21 | Compensating pulley device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98203572 CN2319388Y (en) | 1998-04-21 | 1998-04-21 | Compensating pulley device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2319388Y true CN2319388Y (en) | 1999-05-19 |
Family
ID=33960372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98203572 Expired - Fee Related CN2319388Y (en) | 1998-04-21 | 1998-04-21 | Compensating pulley device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2319388Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745093A (en) * | 2012-07-06 | 2012-10-24 | 周建科 | Ratchet wheel compensation mechanism for overhead line system of electrified railway and design method |
-
1998
- 1998-04-21 CN CN 98203572 patent/CN2319388Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745093A (en) * | 2012-07-06 | 2012-10-24 | 周建科 | Ratchet wheel compensation mechanism for overhead line system of electrified railway and design method |
| CN102745093B (en) * | 2012-07-06 | 2014-11-12 | 周建科 | Ratchet wheel compensation mechanism for overhead line system of electrified railway and design method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |