CN202836955U - Pulley mechanism of thrust gear in dynamic circulation - Google Patents
Pulley mechanism of thrust gear in dynamic circulation Download PDFInfo
- Publication number
- CN202836955U CN202836955U CN 201220532309 CN201220532309U CN202836955U CN 202836955 U CN202836955 U CN 202836955U CN 201220532309 CN201220532309 CN 201220532309 CN 201220532309 U CN201220532309 U CN 201220532309U CN 202836955 U CN202836955 U CN 202836955U
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- CN
- China
- Prior art keywords
- pulley
- base
- thrust rod
- thrust
- pulley mechanism
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a pulley mechanism of a thrust gear in dynamic circulation. The pulley mechanism comprises a base and a thrust rod. A thrust jack is arranged between the rear end of the thrust rod and the base, a bottom-lifting jack is arranged between the upper surface of the thrust rod and the base, the front end of the thrust rod is connected with a lug support, and the front end of the thrust rod and the base and the rear end of the thrust rod and the base are raised by pulleys larger than or equal to 100mm in height respectively. A wheel groove is arranged below a car body, semi-circular engine bearings are arranged on two sides of the wheel groove respectively, axles are arranged at two edges of a pulley respectively, the pulley is disposed in the wheel groove, and the semi-circular engine bearings on two sides of the wheel groove are fastened on the axles on two sides of the pulley respectively. When the thrust rod is used for a dynamic test and when the bottom-lifting jack acts on the thrust rod under the pressure of 38.5Mpa, the thrust jack pulls the thrust rod for dynamic circulation, friction between the pulleys and a floor is small, the service life of the pulley mechanism is long, and material is saved.
Description
Technical field
The utility model relates to the frock that a kind of coal-mine hydraulic support thrust gear detects usefulness, relates in particular to the pulley mechanism in a kind of thrust gear dynamic circulation.
Background technology
At present, according to standard code, must carry out " lifting end loading, pusher rod maximum deflection dynamic circulation " test item to the thrust gear on the coal-mine hydraulic support.
As shown in Figure 1, in the prior art, when push rod carries out dynamic test, lift end lifting jack and act on 38.5MPa in the situation of push rod, advancing jack pulling push rod is done dynamic circulation, and 100mm is raised with frock in the push rod bottom.
There is following shortcoming at least in above-mentioned prior art: frock and the friction force between the floor of raising 100mm are large, and the frock life-span is short, and the waste material damages being not easy to change.
The utility model content
The purpose of this utility model provides the pulley mechanism in the long thrust gear dynamic circulation of a kind of easy to use, life-span.
The purpose of this utility model is achieved through the following technical solutions:
Pulley mechanism in the thrust gear dynamic circulation of the present utility model, described thrust gear comprises base, pusher rod, be provided with advancing jack between the rear end of described pusher rod and the described base, be provided with between the upper surface of described pusher rod and the described base and lift end lifting jack, the front end of described pusher rod is connected with the ear seat, paves with the coaster of height more than or equal to 100mm respectively between the front-end and back-end of described pusher rod and the base plate.
Can be found out by the technical scheme that above-mentioned the utility model provides, pulley mechanism in the thrust gear dynamic circulation that the utility model embodiment provides, owing to paving with the coaster of height more than or equal to 100mm respectively between the front-end and back-end of pusher rod and the base plate, friction force between coaster and the floor is little, the life-span long, economical with materials, is convenient to after the damage change.
Description of drawings
Fig. 1 is the structural representation of the frock in the thrust gear dynamic circulation of the prior art;
The structural representation of the pulley mechanism in the thrust gear dynamic circulation that Fig. 2 provides for the utility model embodiment;
Fig. 3 is the side structure schematic diagram of the coaster in the utility model;
Fig. 4 is the end face structure schematic diagram of the coaster in the utility model.
Among the figure: 1, pusher rod, 2, advancing jack, 3, frock, 4, coaster, 6, car body, 7, pulley, 8, race, 9, wheel shaft.
Embodiment
The below will be described in further detail the utility model embodiment.
Pulley mechanism in the thrust gear dynamic circulation of the present utility model, its better embodiment be as shown in Figure 2:
Described thrust gear comprises base, pusher rod, be provided with advancing jack between the rear end of described pusher rod and the described base, be provided with between the upper surface of described pusher rod and the described base and lift end lifting jack, the front end of described pusher rod is connected with the ear seat, paves with the coaster of height more than or equal to 100mm respectively between the front-end and back-end of described pusher rod and the base plate.
As shown in Figure 3, Figure 4, described coaster comprises car body, pulley, the bottom of described car body is provided with race, the both sides of described race are respectively equipped with semicircular bearing bush, the two ends of described pulley are respectively equipped with wheel shaft, described pulley places described race, and the semicircular bearing bush of race both sides is buckled in respectively on the wheel shaft of pulley both sides.
Each coaster is provided with one or two or three pulleys.
Use the utility model, when push rod carries out dynamic test, to lift end lifting jack and act on 38.5MPa in the situation of push rod, advancing jack pulling push rod is done dynamic circulation, 100mm is raised with coaster in the push rod bottom, and the friction force between coaster and the floor is little, the life-span long, economical with materials.
In concrete the application, a test loop process is as follows: the pusher rod front portion is connected by the ear seat, and the bottom is paved by the high coaster of 100mm, and base is fixed, keep advancing jack cavity of resorption exert pressure to 38.5Mpa (passing system fixing), advancing jack stretches out fully and retracts.Advancing jack stretches out in the process, lifts end lifting jack cavity of resorption and is pressurized to 38.5Mpa, is loaded above the pusher rod.Note lifting the hydraulic stroke that end lifting jack stays 25mm at least in the process of the test.When advancing jack is retracted, lift end jack pair pusher rod and do not load.
Coaster and base plate rolling friction make push rod convenient mobile, and coaster still can also continue to use after through 8000 dynamic circulation, changes such as need, changes pulley and gets final product.
The utility model has been filled up present blank about the push rod dynamic test, effectively reduces push rod dynamic circulation and base plate and produces friction force, makes test smoothly, has increased the confidence level of user to product.Use pulley mechanism of the present utility model, when reducing friction, pulley separates with fixed mechanism, also is convenient for changing, and does not need whole replacings, has saved the test spending.
The above; it only is the better embodiment of the utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (3)
1. the pulley mechanism in the thrust gear dynamic circulation, described thrust gear comprises base, pusher rod, be provided with advancing jack between the rear end of described pusher rod and the described base, be provided with between the upper surface of described pusher rod and the described base and lift end lifting jack, the front end of described pusher rod is connected with the ear seat, it is characterized in that, pave with the coaster of height more than or equal to 100mm respectively between the front-end and back-end of described pusher rod and the base plate.
2. the pulley mechanism in the thrust gear dynamic circulation according to claim 1, it is characterized in that, described coaster comprises car body, pulley, the bottom of described car body is provided with race, the both sides of described race are respectively equipped with semicircular bearing bush, the two ends of described pulley are respectively equipped with wheel shaft, and described pulley places described race, and the semicircular bearing bush of race both sides is buckled in respectively on the wheel shaft of pulley both sides.
3. the pulley mechanism in the thrust gear dynamic circulation according to claim 2 is characterized in that, each coaster is provided with one or two or three pulleys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220532309 CN202836955U (en) | 2012-10-17 | 2012-10-17 | Pulley mechanism of thrust gear in dynamic circulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220532309 CN202836955U (en) | 2012-10-17 | 2012-10-17 | Pulley mechanism of thrust gear in dynamic circulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202836955U true CN202836955U (en) | 2013-03-27 |
Family
ID=47948636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220532309 Withdrawn - After Issue CN202836955U (en) | 2012-10-17 | 2012-10-17 | Pulley mechanism of thrust gear in dynamic circulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202836955U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928210A (en) * | 2012-10-17 | 2013-02-13 | 中煤北京煤矿机械有限责任公司 | Tackle mechanism in dynamic circulation of thrust mechanism |
-
2012
- 2012-10-17 CN CN 201220532309 patent/CN202836955U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928210A (en) * | 2012-10-17 | 2013-02-13 | 中煤北京煤矿机械有限责任公司 | Tackle mechanism in dynamic circulation of thrust mechanism |
| CN102928210B (en) * | 2012-10-17 | 2015-07-08 | 中煤北京煤矿机械有限责任公司 | Tackle mechanism in dynamic circulation of thrust mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130327 Effective date of abandoning: 20150708 |
|
| RGAV | Abandon patent right to avoid regrant |