CN203640747U - Hydraulic bracket, base lifting jack and piston rod of base lifting jack - Google Patents
Hydraulic bracket, base lifting jack and piston rod of base lifting jack Download PDFInfo
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- CN203640747U CN203640747U CN201320664998.6U CN201320664998U CN203640747U CN 203640747 U CN203640747 U CN 203640747U CN 201320664998 U CN201320664998 U CN 201320664998U CN 203640747 U CN203640747 U CN 203640747U
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- Prior art keywords
- piston rod
- friction
- end jack
- head
- rod body
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Abstract
The utility model discloses a hydraulic bracket, a base lifting jack and a piston rod of the base lifting jack. The piston rod of the base lifting jack comprises a piston rod body and a friction part; the friction part is arranged at the end part of the piston rod body; the friction part is in detachable connection with the piston rod body. The piston rod of the base lifting jack, disclosed by the utility model, is simple in structure and easy to manufacture; the friction part and the piston rod body adopt a separated structure; in the pushing process, only the friction part is worn, the condition that the piston rod body is worn can be avoided, and once the condition that the friction part is worn out or the base lifting travel is seriously influenced is generated, the friction part can be disassembled and replaced, so that a rod head of the jack is effectively protected and the problems of easiness for wear, high replacement cost and difficulty in underground disassembling of the head part of the piston rod of the base lifting jack in the pushing process are solved.
Description
Technical field
The utility model relates to engineering machinery field, particularly a kind of hydraulic support, lift end jack and piston rod thereof.
Background technology
Hydraulic support is the support equipment of coal mine fully-mechanized mining working, it realizes the motion such as lifting, reach taking hydraulic pressure as power, can reliably and effectively support and control the top board of work plane, isolation goaf, prevent that spoil from entering stope and promoting conveyer, support the use with coal-winning machine, realize coal mining comprehensive mechanization, improve the usefulness of coal mining and haulage device, upkeep operation space safety.
In the time that floor undulation geological conditions is softer, hydraulic support foundation is easily absorbed in base plate, there will be and gnaw end phenomenon while moving frame, causes moving difficulty, now operated by rotary motion bottom raising mechanism.Conventional bottom raising mechanism comprises lifts end jack and push rod, moving in frame process, lift frictional force between end jack and push rod very large, easily will lift end jack piston club head wearing and tearing, time has been grown and has caused piston rod to shorten, lift end stroke and dwindle, even cause after head wearing and tearing fairlead directly to contact push rod to such an extent as to piston rod is scrapped, change the high and down-hole dismounting difficulty of piston rod cost.
Utility model content
In view of this, the utility model proposes a kind of hydraulic support, lift end jack and piston rod thereof, lift to solve that jack piston rod head in passing process in the end is easily worn, replacement cost is high and difficult defect is dismantled in down-hole.
First aspect, the utility model provides a kind of piston rod of lifting end jack, comprising: piston rod body and friction part; Described friction part is arranged at the end of described piston rod body, and described friction part and described piston rod body removably connect.
Further, in the above-mentioned piston rod of lifting end jack, described friction part is friction head; Described piston rod body offers groove with one end that described friction head is connected, and described friction head snaps in described groove, and removably connects with described groove.
Further, in the above-mentioned piston rod of lifting end jack, described friction head comprises head, and, be connected with described head and snap in the Access Division of described groove; And described Access Division and described friction head removably connect.
Further, in the above-mentioned piston rod of lifting end jack, described friction head and described piston rod body removably connect by U-shaped card.
Further, in the above-mentioned piston rod of lifting end jack, described recess sidewall is provided with screw thread; The part that described friction head embeds described groove is also provided with screw thread; Described friction head is connected by screw thread with described groove.
Further, in the above-mentioned piston rod of lifting end jack, described friction part is friction sleeve; Described friction sleeve is sheathed on the end of described piston rod body.
Further, in the above-mentioned piston rod of lifting end jack, described friction sleeve and described piston rod body removably connect by bearing pin.
Further, in the above-mentioned piston rod of lifting end jack, described bearing pin also positions by D type card.
Than prior art, the utility model has the following advantages:
The first, generally bottom lifting jack for mining hydraulic support is integrated part with piston rod, piston rod material uniformity, not wear-resisting, and the friction part the utility model proposes is simple in structure, easily manufacture, material can be selected abrasion-resistant stee material, with piston rod body be separate type, when use, friction part directly contacts push rod.When passing, can not there is the situation of piston rod body wear in a Wear Friction portion, once grind away or have a strong impact on the situation of lifting end stroke, just detachably changes, and effectively protected the bar head of jack.
The second, the replacing of friction part is convenient and swift, simple, the application life of effectively improving jack.
Three, in prior art, conventional bottom raising mechanism is generally lifts end jack with piston shoes, be connected with upper frame, bearing pin for base bridge, piston shoes groove on gap bridge is as guiding, at the bottom of this structure is lifted end jack cylinder, friction overshoes is added in outside, and overshoes contacts with push rod, structure heaviness, and friction overshoes is generally forging, and the manufacturing cycle is long, cost is high.Therefore, compared with this friction overshoes, the utility model is without doing die forging, and quality easily ensures, is easy to meet construction period, and cost of production is low.
Second aspect, the utility model also provides one to lift end jack, is provided with the above-mentioned piston rod of lifting end jack described in any one, and push rod; The friction part of described piston rod is connected with described push rod contact.Be provided with the above-mentioned piston rod of lifting end jack owing to lifting end jack, therefore, also have and lift the technique effect that the piston rod of end jack has.The utility model does not repeat them here.
The third aspect, the utility model also provides a kind of hydraulic support, is provided with the above-mentioned end jack of lifting.Due to hydraulic support be provided with comprise above-mentioned piston rod lift end jack, therefore, also there is the technique effect that the above-mentioned piston rod of lifting end jack has, the utility model does not repeat them here.
Brief description of the drawings
The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is that the utility model is lifted end jack piston rod the first embodiment and the working state schematic representation of push rod of lifting end jack;
Fig. 2 is the structural representation that the utility model is lifted end jack piston rod the first embodiment;
Fig. 3 is the structural representation that the utility model is lifted end jack piston rod the second embodiment.
Description of reference numerals
1 lifts end jack
2 push rods
3 piston rod bodies
4 U-shaped cards
5 friction heads
6 bearing pins
7 friction sleeves
8 D type cards
9 grooves
Detailed description of the invention
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the utility model can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
The first embodiment
See figures.1.and.2.
The present embodiment provides a kind of piston rod of lifting end jack, comprising: piston rod body 3 and friction part; Friction part is arranged at the end of piston rod body 3, and friction part and piston rod body 3 removably connect.
In this embodiment, the friction part of lifting the piston rod of end jack is friction head 5; One end that piston rod body 3 is connected with friction head 5 offers groove 9, and friction head 5 snaps in groove 9.Further, friction head 5 comprises head, and, be connected with head and snap in the Access Division of groove 9; And preferably, friction head 5 removably connects by U-shaped card 4 with piston rod body 3.
In the time of work, lift the friction head 5 of end jack piston rod down, contact push rod 2, cylinder body is fixed on base.When lifting end jack 1 and extending, taking the push rod 2 of lifting end jack 1 below as fulcrum, will on hydraulic support foundation, lift, then by advancing jack effect, hydraulic support is moved smoothly.
Moving in frame process, although it is very large to lift frictional force between end jack 1 and push rod 2, because friction head 5 directly contacts push rod 2, as grinds away or causes and lift when stroke is inadequate at the end, only need to change friction head 5, and do not affect the use of other component such as piston rod body 3 and fairlead.
Preferably, friction head 5 can adopt the abrasion-resistant stee material different from piston rod material to be made, and realizes wear-resisting functions.And, affect when friction head 5 serious wear and lift the end when stroke, just can again change a friction head, and not affect the use of other component such as piston rod body and fairlead.
In the above-described embodiments, alternatively, friction head 5 also can be connected by screw thread with piston rod body 3.Feasible structure is to be provided with screw thread at groove 9 sidewalls; The part that friction head 5 embeds groove 9 is also provided with screw thread; Friction head 5 is connected by screw thread with groove 9.
Can find out, the present embodiment tool has the following advantages:
The first, generally bottom lifting jack for mining hydraulic support is integrated part with piston rod, and piston rod material uniformity is not wear-resisting, and the friction head of the present embodiment is simple in structure, easily manufacture, material can be selected abrasion-resistant stee material, with piston rod body be separate type, when use, friction head directly contacts push rod.When passing, can not there is the situation of piston rod body wear in a Wear Friction portion, once grind away or have a strong impact on the situation of lifting end stroke, just detachably changes, and effectively protected the bar head of jack.
The second, the replacing of friction head is convenient and swift, simple, the application life of effectively improving jack.
Three, in prior art, conventional bottom raising mechanism is generally lifts end jack with piston shoes, be connected with upper frame, bearing pin for base bridge, piston shoes groove on gap bridge is as guiding, at the bottom of this structure is lifted end jack cylinder, friction overshoes is added in outside, and overshoes contacts with push rod, structure heaviness, and friction overshoes is generally forging, and the manufacturing cycle is long, cost is high.Therefore, compared with this friction overshoes, the present embodiment is without doing die forging, and quality easily ensures, is easy to meet construction period, and cost of production is low.
The second embodiment
With reference to Fig. 3.
The present embodiment provides a kind of piston rod of lifting end jack, comprising: piston rod body 3 and friction part; Friction part is arranged at the end of piston rod body 3, and friction part and piston rod body 3 removably connect.
In this embodiment, friction part is friction sleeve 7; Friction sleeve 7 is sheathed on the end of piston rod body 3.Friction sleeve 7 removably connects by bearing pin with piston rod body 3, and described bearing pin 6 also positions by D type card 8.
This scheme is the replacement scheme of the first embodiment; add friction sleeve 7 in piston rod body 3 outsides; by bearing pin 6, friction sleeve is fixed on to piston rod bottom; this external friction sleeve practical function is identical with built-in friction head; wear-resistant easy replacing; protection piston rod, extends and lifts end jack application life.
With respect to prior art, the present embodiment has following advantage:
The first, the friction sleeve of the present embodiment simple in structure, easily manufacture, material can be selected abrasion-resistant stee material, with piston rod body be separate type, when use, friction head directly contacts push rod.When passing, can not there is the situation of piston rod body wear in a Wear Friction cover, once grind away or have a strong impact on the situation of lifting end stroke, just detachably changes, and effectively protected the bar head of jack.
The second, the replacing of friction sleeve is convenient and swift, simple, the application life of effectively improving jack.
Three, in prior art, conventional bottom raising mechanism is generally lifts end jack with piston shoes, be connected with upper frame, bearing pin for base bridge, piston shoes groove on gap bridge is as guiding, at the bottom of this structure is lifted end jack cylinder, friction overshoes is added in outside, and overshoes contacts with push rod, structure heaviness, and friction overshoes is generally forging, and the manufacturing cycle is long, cost is high.Therefore, compared with this friction overshoes, the present embodiment is without doing die forging, and quality easily ensures, is easy to meet construction period, and cost of production is low.
Second aspect, the utility model also provides a kind of embodiment that lifts end jack, and this is lifted end jack 1 and is provided with the above-mentioned piston rod of lifting end jack described in any one, and push rod 2; The friction part of piston rod is connected with push rod 2 contacts.Be provided with the above-mentioned piston rod of lifting end jack owing to lifting end jack 1, therefore, also have and lift the technique effect that the piston rod of end jack has.The utility model does not repeat them here.
The third aspect, the utility model also provides a kind of hydraulic support, is provided with the above-mentioned end jack 1 of lifting.Due to hydraulic support be provided with comprise above-mentioned piston rod lift end jack 1, therefore, also there is the technique effect that the above-mentioned piston rod of lifting end jack has, the utility model does not repeat them here.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a piston rod of lifting end jack, is characterized in that, comprising:
Piston rod body (3) and friction part;
Described friction part is arranged at the end of described piston rod body (3), and described friction part and described piston rod body (3) removably connect.
2. the piston rod of lifting end jack according to claim 1, is characterized in that,
Described friction part is friction head (5);
One end that described piston rod body (3) is connected with described friction head (5) offers groove (9);
Described friction head (5) snaps in described groove (9), and removably connects with described groove (9).
3. the piston rod of lifting end jack according to claim 2, is characterized in that,
Described friction head (5) comprises head, and, be connected with described head and snap in the Access Division of described groove (9);
And described Access Division and described friction head (5) removably connect.
4. the piston rod of lifting end jack according to claim 3, is characterized in that,
Described friction head (5) removably connects by U-shaped card (4) with described piston rod body (3).
5. the piston rod of lifting end jack according to claim 2, is characterized in that,
Described groove (9) sidewall is provided with screw thread;
The part that described friction head (5) embeds described groove (9) is also provided with screw thread;
Described friction head (5) is connected by screw thread with described groove (9).
6. the piston rod of lifting end jack according to claim 1, is characterized in that,
Described friction part is friction sleeve (7);
Described friction sleeve (7) is sheathed on the end of described piston rod body (3).
7. the piston rod of lifting end jack according to claim 6, is characterized in that,
Described friction sleeve (7) removably connects by bearing pin (6) with described piston rod body (3).
8. the piston rod of lifting end jack according to claim 7, is characterized in that,
Described bearing pin (6) also positions by D type card (8).
9. lift an end jack, it is characterized in that, be provided with the piston rod of lifting end jack as described in any one in claim 1 to 8, and push rod (2); The friction part of described piston rod is connected with described push rod (2) contact.
10. a hydraulic support, is characterized in that, is provided with the end jack of lifting as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320664998.6U CN203640747U (en) | 2013-10-23 | 2013-10-23 | Hydraulic bracket, base lifting jack and piston rod of base lifting jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320664998.6U CN203640747U (en) | 2013-10-23 | 2013-10-23 | Hydraulic bracket, base lifting jack and piston rod of base lifting jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203640747U true CN203640747U (en) | 2014-06-11 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320664998.6U Expired - Fee Related CN203640747U (en) | 2013-10-23 | 2013-10-23 | Hydraulic bracket, base lifting jack and piston rod of base lifting jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203640747U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113730777A (en) * | 2021-09-30 | 2021-12-03 | 中南大学 | Be used for children oral treatment device of dosing |
-
2013
- 2013-10-23 CN CN201320664998.6U patent/CN203640747U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113730777A (en) * | 2021-09-30 | 2021-12-03 | 中南大学 | Be used for children oral treatment device of dosing |
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| 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: 20140611 Termination date: 20161023 |
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| CF01 | Termination of patent right due to non-payment of annual fee |