CN202707111U - Bottom raising device of hydraulic support - Google Patents
Bottom raising device of hydraulic support Download PDFInfo
- Publication number
- CN202707111U CN202707111U CN 201220356887 CN201220356887U CN202707111U CN 202707111 U CN202707111 U CN 202707111U CN 201220356887 CN201220356887 CN 201220356887 CN 201220356887 U CN201220356887 U CN 201220356887U CN 202707111 U CN202707111 U CN 202707111U
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- CN
- China
- Prior art keywords
- vertical
- bracket base
- horizontal
- jack
- hydraulic support
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- Expired - Fee Related
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Abstract
The utility model relates to a bottom raising device of a hydraulic support, and the bottom raising device comprises a support base, wherein the bottom end of the support base is provided with a pushing rod groove, a pushing rod is arranged inside the pushing rod groove, a bottom raising jack which is installed on the support base in a suspension way is arranged inside the pushing rod groove on the front end of the support base, the top end of the bottom raising jack is fixedly installed on a horizontal top plate, two sides of the horizontal top plate are fixedly connected with two vertical lug plates, the support base is provided with two lug plate slots which are opposite to the two vertical lug plates and matched with the shape of each vertical lug plate, and the two vertical lug plates are respectively installed inside the two lug plate slots through horizontal pin shafts; and each vertical lug plate is provided with a vertical guide long slotted hole which can slide relatively to the horizontal pin shaft. The bottom raising device solves the difficulty for moving the support; and moreover, the entire device is simple in structure, convenient to operate, safe, reliable and long in service life.
Description
Technical field
The utility model relates to hydraulic support, specifically a kind of hydraulic support bottom lifting device.
Background technology
Hydraulic support plays the effect of supporting in coal mining, along with the exploitation in coal seam, need to move the frame operation to hydraulic support.Offer the pusher rod groove on the bracket base, be provided with pusher rod in the pusher rod groove, the pusher rod rear end is connected with advancing jack, utilizes advancing jack to promote pusher rod, realizes that the frame that moves of whole hydraulic support operates.When the rock strength of work plane was weak, the front end of bracket base was easy to prick at the end, is unfavorable for moving the frame operation, has affected the normal use of support in the actual production.
The utility model content
The technical problems to be solved in the utility model provides a kind of hydraulic support bottom lifting device, this bottom lifting device is lifted end jack take pusher rod as the strong point utilization bracket base front end is lifted, it is simple, easy to operate to have solved the difficult problem and the whole apparatus structure that move frame, long service life.
For solving the problems of the technologies described above, the utility model comprises bracket base, the bottom of bracket base offers the pusher rod groove, be provided with pusher rod in the pusher rod groove, its design feature is to be provided with in the pusher rod groove of described bracket base front end to hang to be installed in to lift end jack on the bracket base, the top of lifting end jack is fixedly mounted on the horizontal top plate, the both sides of this horizontal top plate are connected with two vertical otic placodes, bracket base is provided with the two otic placode slots that the shape with two vertical otic placodes adapts in the position corresponding with two vertical otic placodes, two vertical otic placodes are installed in the two otic placode slots by horizontal bearing pin respectively.
Offer on the described vertical otic placode can with the vertical guiding long slot bore of horizontal bearing pin generation relative sliding.
Described horizontal bearing pin is cylindric, the semicircle arcuation of the two ends of the long slot bore that vertically leads for matching with the shape of horizontal bearing pin.
The described top end face of lifting end jack is hemisphere face, and the bottom surface of horizontal top plate offers the top board ball-and-socket that adapts with the top end face shape of lifting end jack, and the top of lifting end jack is installed in the top board ball-and-socket by bolt.
The beneficial effects of the utility model are: lift end jack and be installed on the horizontal top plate, horizontal top plate adds that by vertical otic placode and otic placode slot the structure of horizontal bearing pin is installed on the bracket base again, the bottom of lifting end jack is unsettled, need to carry out when lifting end operation, lifting end jack extends first and touches pusher rod, along with the continuation elongation of lifting end jack, jack is with bracket base jack-up, the bracket base front end namely is lifted from pricking at the end, then can move the frame operation, whole apparatus structure is simple, and it is convenient to implement, and has solved a difficult problem of moving frame; Vertically the setting of guiding long slot bore can be played the effect of guiding, can one section zero load stroke of freedom be arranged so that lift end jack again, avoid lifting end jack and namely bear the huge heavy card phenomenon of spraining that causes because the free-extension distance is too short, increase the application life of lifting end jack; Vertically the two ends of guiding long slot bore are the semicircle arcuation that matches with the shape of horizontal bearing pin, so that the stressed uniform and stable of contact surface increases the security reliability of lifting the end; Lift the top of end jack and adopt the form of sphere-contact to be installed on the horizontal top plate, evenly increased the security reliability of lifting the end so that contact surface is stressed, avoided the excessive structural failure that causes of pressure, and installed by bolt, dismantle and change very convenient.The utility model has solved a difficult problem of moving frame, and whole apparatus structure is simple, easy to operate, safe and reliable, long service life.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is the structural representation of the utility model when the bracket base front end is pricked the end;
Fig. 2 is the structural representation of the utility model when the bracket base front end is lifted.
The specific embodiment
See figures.1.and.2, a kind of embodiment of the present utility model is for comprising bracket base 1, the bottom of bracket base 1 offers pusher rod groove 20, be provided with pusher rod 2 in the pusher rod groove 20, be provided with in the pusher rod groove 20 of bracket base 1 front end to hang to be installed in and lift end jack 3 on the bracket base 1, the top of lifting end jack 3 is fixedly mounted on the horizontal top plate 4, the both sides of this horizontal top plate 4 are connected with two vertical otic placodes 5, bracket base 1 is provided with two otic placode slots, 50, the two vertical otic placodes 5 that the shape with two vertical otic placodes 5 adapts and is installed in the two otic placode slots 50 by horizontal bearing pin 6 respectively in the position corresponding with two vertical otic placodes 5.The top of lifting end jack 3 is installed on the horizontal top plate 4, and horizontal top plate 4 adds that by vertical otic placode 5 and otic placode slot 50 structure of horizontal bearing pin 6 is installed on the bracket base 1 again, and the bottom of lifting end jack 3 is unsettled.When operation end lifted in execution, lifts end jack 3 and extends first and touch pusher rod 2, and along with the continuation elongation of lifting end jack 3 can be with bracket base 1 jack-up, bracket base 1 front end namely is lifted from pricking at the end, then can move the frame operation.
See figures.1.and.2, vertically offer the vertical guiding long slot bore 60 that relative sliding can occur with horizontal bearing pin 6 on the otic placode 5.As shown in Figure 1, lift end operation before, the whole end jack 3 of lifting is suspended on the horizontal top plate, this moment, vertically otic placode 5 also slided to down the top that horizontal pin axle 6 is positioned at vertical guiding elongated slot 60.As shown in Figure 2, when lifting the end, lifting end jack 3 is stretched to first its bottom and touches pusher rod 2, then continue elongation, at this moment horizontal bearing pin 6 and long slot bore 60 relative slidings that vertically lead, when horizontal bearing pin 6 is positioned at the bottom of vertical guiding long slot bore 60, lift end jack 3 and begin to bear a heavy burden, then lift the 3 continuation elongations of the end jack bracket base 1 is lifted.Vertically the setting of guiding long slot bore 60 at first is in order to play the vertically effect of guiding, next is so that lift end jack 3 one section zero load stroke of freedom to be arranged, and namely bears the huge heavy card phenomenon of spraining that causes because the free-extension distance is too short to avoid lifting end jack 3.Wherein preferred, horizontal bearing pin 6 is cylindric for adopting, the semicircle arcuation of the two ends of the long slot bore 60 that vertically leads for matching with the shape of horizontal bearing pin 6.The setting of this kind contact structures is in order to make contact surface stressed evenly.
See figures.1.and.2, the top end face of lifting end jack 3 is hemisphere face, and the bottom surface of horizontal top plate 4 offers the top board ball-and-socket 41 that adapts with the top end face shape of lifting end jack 3, and the top of lifting end jack 3 is installed in the top board ball-and-socket 41 by bolt 7.Lift the top of end jack 3 and adopt the form of this kind sphere-contact to install, can be so that contact surface be stressed evenly.In addition, lift the edges and corners of the bottom of end jack 3 and all do the rounding off processing, avoid corner angle to affect the stressed even of jack, and then make its internal construction impaired.
Claims (4)
1. hydraulic support bottom lifting device, comprise bracket base (1), the bottom of bracket base (1) offers pusher rod groove (20), be provided with pusher rod (2) in the pusher rod groove (20), it is characterized in that being provided with in the pusher rod groove (20) of described bracket base (1) front end hanging to be installed in and lift end jack (3) on the bracket base (1), the top of lifting end jack (3) is fixedly mounted on the horizontal top plate (4), the both sides of this horizontal top plate (4) are connected with two vertical otic placodes (5), bracket base (1) is provided with the two otic placode slots (50) that the shape with two vertical otic placodes (5) adapts in the position corresponding with two vertical otic placodes (5), two vertical otic placodes (5) are installed in the two otic placode slots (50) by horizontal bearing pin (6) respectively.
2. hydraulic support bottom lifting device as claimed in claim 1 is characterized in that offering on the described vertical otic placode (5) the vertical guiding long slot bore (60) that relative sliding can occur with horizontal bearing pin (6).
3. hydraulic support bottom lifting device as claimed in claim 2 is characterized in that described horizontal bearing pin (6) for cylindric, the semicircle arcuation of the two ends of the long slot bore (60) that vertically leads for matching with the shape of horizontal bearing pin (6).
4. such as each described hydraulic support bottom lifting device in the claims 1 to 3, it is characterized in that the described top end face of lifting end jack (3) is hemisphere face, the bottom surface of horizontal top plate (4) offers the top board ball-and-socket (41) that adapts with the top end face shape of lifting end jack (3), and the top of lifting end jack (3) is installed in the top board ball-and-socket (41) by bolt (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220356887 CN202707111U (en) | 2012-07-23 | 2012-07-23 | Bottom raising device of hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220356887 CN202707111U (en) | 2012-07-23 | 2012-07-23 | Bottom raising device of hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202707111U true CN202707111U (en) | 2013-01-30 |
Family
ID=47587420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220356887 Expired - Fee Related CN202707111U (en) | 2012-07-23 | 2012-07-23 | Bottom raising device of hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202707111U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108263981A (en) * | 2018-03-14 | 2018-07-10 | 浙江耀欧汽车零部件有限公司 | A kind of both legs support type PSJ recreational vehicle electric jack stands |
-
2012
- 2012-07-23 CN CN 201220356887 patent/CN202707111U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108263981A (en) * | 2018-03-14 | 2018-07-10 | 浙江耀欧汽车零部件有限公司 | A kind of both legs support type PSJ recreational vehicle electric jack stands |
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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: 20130130 Termination date: 20150723 |
|
| EXPY | Termination of patent right or utility model |