CN209483411U - Telescopic lift chassis - Google Patents
Telescopic lift chassis Download PDFInfo
- Publication number
- CN209483411U CN209483411U CN201822233427.2U CN201822233427U CN209483411U CN 209483411 U CN209483411 U CN 209483411U CN 201822233427 U CN201822233427 U CN 201822233427U CN 209483411 U CN209483411 U CN 209483411U
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- China
- Prior art keywords
- sleeve
- pin shaft
- lift chassis
- dome
- jack
- Prior art date
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Abstract
The utility model discloses a kind of telescopic lift chassis, including dome, dome upper surface is fixed with handle, and dome lower surface is fixed with lift chassis sleeve, and through-hole is provided on dome, and lift chassis sleeve is equipped with pin shaft hole.Carried bottom jack, which is oriented to, is respectively equipped with the pin shaft hole coaxial with the pin shaft hole on lift chassis sleeve in big sleeve and jack head.By lift chassis sleeve be inserted into the carried bottom jack be oriented to big sleeve it is suitable for reading in, and carried bottom jack is oriented to by big sleeve and jack head by pin shaft and lifts chassis sleeve connection, be connected and fixed dome and carried bottom jack head by bolt.Gap between on the inside of jack head and big sleeve has been filled up, jack transverse direction fixed pin shaft cantilever segment is reduced, the pin shaft easy service life increases.
Description
Technical field
The utility model relates to a kind of coal mine hydraulic supporting more particularly to a kind of telescopic lift chassis.
Background technique
The raising of requirement with coal mine to hydraulic support stand resistance, hydraulic support also constantly increase the pressure of bottom plate
Greatly, when pressure of the pan frontward end of hydraulic support to bottom plate is more than the allowable stress of bottom plate, it is inevitable that pan frontward end, which sink,.
After pan frontward end sink, if taken no action to, the Forward of hydraulic support itself just cannot achieve, therefore general on hydraulic support
Bottom lifting device is set.
Hydraulic support bottom lifting device is generally used and is arranged vertically.Vertically arranged bottom lifting device is generally divided into: lift chassis adds
Sleeve is fixed and lift chassis adds piston shoes two kinds of forms of formula.
Carried bottom jack in the lift fixed bottom lifting device of the jacketed cylinder of chassis be at head by a lateral pin shaft with
What sleeve was fixed.Carried bottom jack is mounted in sleeve, and the cylinder barrel outer diameter of carried bottom jack is and sleeve diameter size phase
Matching, by being limited by jack structure design, jack piston head diameter will be much smaller than sleeve diameter size.This structure
The increasing of jack transverse direction fixed pin shaft cantilever segment is directly resulted in, forced area reduces, and suffered shear stress increases, pin shaft rapid wear
It is bad.
Utility model content
The purpose of the utility model is to provide a kind of telescopic lift chassis.
The purpose of this utility model is achieved through the following technical solutions:
The telescopic lift chassis of the utility model, including dome, the dome upper surface are fixed with handle, under the dome
Surface is fixed with lift chassis sleeve, and through-hole is provided on the dome, and the lift chassis sleeve is equipped with pin shaft hole.
The telescopic lift provided by the embodiment of the utility model it can be seen from above-mentioned technical solution provided by the utility model
Chassis fills up gap between on the inside of jack head and big sleeve, reduces jack transverse direction fixed pin shaft cantilever segment, pin shaft is easy
Service life increases.
Detailed description of the invention
Fig. 1 a, Fig. 1 b, Fig. 1 c are respectively facing, side view, bowing for telescopic lift chassis provided by the embodiment of the utility model
Depending on structural schematic diagram.
Fig. 2 is telescopic lift chassis mounting structure schematic diagram provided by the embodiment of the utility model.
1- dome；2- handle；3- sleeve；4- through-hole；5- pin shaft hole；6- carried bottom jack is oriented to big sleeve；7- lifts bottom thousand
Jin top.
Specific embodiment
The utility model embodiment will be described in further detail below.Do not make in the utility model embodiment in detail
The content of description belongs to the prior art well known to professional and technical personnel in the field.
The telescopic lift chassis of the utility model, preferable specific embodiment is:
Including dome, the dome upper surface is fixed with handle, and the dome lower surface is fixed with lift chassis sleeve, described
Through-hole is provided on dome, the lift chassis sleeve is equipped with pin shaft hole.
The lift chassis sleeve lower edge is equipped with downward circular arc protrusion at pin shaft hole position.
Carried bottom jack is oriented to the pin shaft hole being respectively equipped in big sleeve and jack head on the lift chassis sleeve
Coaxial pin shaft hole.
By the lift chassis sleeve be inserted into the carried bottom jack be oriented to big sleeve it is suitable for reading in, and by pin shaft by institute
It states carried bottom jack and is oriented to big sleeve and jack head and the lift chassis sleeve connection, by the dome and lifted by bolt
Bottom jack head is connected and fixed.
The telescopic lift chassis of the utility model, using dome, handle, the molding form of sleeve weld.Fill up very heavy
Gap between on the inside of push rod head and big sleeve reduces jack transverse direction fixed pin shaft cantilever segment, and the pin shaft easy service life increases.
As shown in Fig. 1 a to Fig. 2, telescopic lift chassis opens 1~2 through-hole on dome at carried bottom jack head, leads to
Bolt is crossed to be fixed with jack.
Handle is welded above telescopic lift chassis dome, and the function of lifting jack is played when dismounting carried bottom jack.
Welded sleeve is for filling up between on the inside of jack head and big sleeve gap simultaneously below telescopic lift chassis dome
Fixed pin shaft.
The key problem in technology point of the utility model:
1. the compliant sleeve selection welded on telescopic lift chassis will fill up jack head and big set to greatest extent
Gap between cylinder inside, reserves suitable surplus again, guarantees that the installation of lift chassis is smooth；
2. carried bottom jack is oriented to the pin shaft hole processing technology requirement in big sleeve, lift chassis upper bush and jack head
Height need to guarantee the concentricity in five holes, guarantee the convenient for disassembly and assembly of pin shaft；
3. telescopic lift chassis upper pin hole is closer with jack interface, circular arc convex design need to be used, that is, is protected
The intensity of card pin shaft hole guarantees that sleeve lower edge and carried bottom jack connector do not interfere phenomenon again.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art can readily occur in the technical scope that the utility model discloses
Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should
Subject to the scope of protection of the claims.
Claims (4)
1. a kind of telescopic lift chassis, which is characterized in that including dome, the dome upper surface is fixed with handle, the dome
Lower surface is fixed with lift chassis sleeve, and through-hole is provided on the dome, and the lift chassis sleeve is equipped with pin shaft hole.
2. telescopic lift chassis according to claim 1, which is characterized in that the lift chassis sleeve lower edge is in pin shaft hole portion
Position is equipped with downward circular arc protrusion.
3. telescopic lift chassis according to claim 2, which is characterized in that carried bottom jack is oriented to big sleeve and lift bottom thousand
The pin shaft hole coaxial with the pin shaft hole on the lift chassis sleeve is respectively equipped in jin push rod head.
4. telescopic lift chassis according to claim 3, which is characterized in that the lift chassis sleeve is inserted into the lift
Bottom jack be oriented to big sleeve it is suitable for reading in, and by pin shaft by the carried bottom jack be oriented to big sleeve and jack head with
The dome and carried bottom jack head are connected and fixed by the lift chassis sleeve connection by bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822233427.2U CN209483411U (en) | 2018-12-28 | 2018-12-28 | Telescopic lift chassis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822233427.2U CN209483411U (en) | 2018-12-28 | 2018-12-28 | Telescopic lift chassis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209483411U true CN209483411U (en) | 2019-10-11 |
Family
ID=68129019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822233427.2U Active CN209483411U (en) | 2018-12-28 | 2018-12-28 | Telescopic lift chassis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209483411U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734469A (en) * | 2020-07-14 | 2020-10-02 | 山西平阳煤机装备有限责任公司 | Roadway advance support auxiliary bottom lifting mechanism |
-
2018
- 2018-12-28 CN CN201822233427.2U patent/CN209483411U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734469A (en) * | 2020-07-14 | 2020-10-02 | 山西平阳煤机装备有限责任公司 | Roadway advance support auxiliary bottom lifting mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |