CN203214075U - Hydraulic support - Google Patents
Hydraulic support Download PDFInfo
- Publication number
- CN203214075U CN203214075U CN 201320140561 CN201320140561U CN203214075U CN 203214075 U CN203214075 U CN 203214075U CN 201320140561 CN201320140561 CN 201320140561 CN 201320140561 U CN201320140561 U CN 201320140561U CN 203214075 U CN203214075 U CN 203214075U
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- Prior art keywords
- connecting rods
- hydraulic cylinder
- cylinder
- hydraulic
- hydraulic support
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- Expired - Fee Related
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Abstract
The utility model discloses a hydraulic support which comprises a support base, a top beam, a linkage arm, a four-linkage bar and a hydraulic cylinder, wherein the four-linkage bar is connected with the linkage arm through pin shafts; the hydraulic cylinder is connected with the support base through a cylinder base; hinging positions of four linking bars on the four-linkage bar and the linkage arm form an adjustable structure; a structure capable of enlarging the adjusting height is arranged at the hydraulic cylinder; a plurality of pin shaft holes are formed preferably and are long; four-linkage bar assisting blocks comprising cylinder holes are arranged at the two outlet ends of the long holes; or the pin shaft holes are designed into the long holes which are connected with a thread pull bar in the shape of T on the pin shaft; and a detachable standby heightening base is arranged between the cylinder base of the hydraulic cylinder and the support base. The hydraulic support has the beneficial effects of being wide in height-adjusting range, convenient in adjusting operation, multiple in structure forms and high in selectivity. In addition, on the premise of guaranteeing the stability of the hydraulic support, the limit of the lifting height of the hydraulic cylinder is overcome. Thus, by utilizing the hydraulic support, the net rate of coal seam mining is improved.
Description
Technical field
The utility model relates to a kind of support system of coal mine fully-mechanized mining working, particularly the big hydraulic support of a kind of height adjustment range.
Background technology
In the fully-mechanized mining process of subterranean coal, the supporting of its work plane is realized by support system.Support system is made of a plurality of hydraulic supports usually, and hydraulic support forms roughly bow-shaped structural by that of base, back timber, four connecting rods, pitman arm.The base support of hydraulic support is on work plane bottom surface or title seat earth, base is provided with a hinged seat, by hinged seat articulated linkage arm, the other end of connecting rod and four rod hinge connections, the other end and the back timber of four connecting rods are hinged, be connected with hydraulic cylinder between back timber and the base, hydraulic cylinder is connected on the base by changeing the cylinder seat by its cylinder body lower end, and back timber is realized the work plane end face by hydraulic cylinder or claimed holding of roof.The support system arcuate openings end front area that hydraulic support forms is used for arranging coal cutting and the initial fortune coal facility of being made up of cutting coal machine and drag conveyor, to realize coal mining and coal to be transferred out the work of work plane.Existing hydraulic support owing to be subjected to the articulated position of hinged seat, pitman arm and four connecting rods and the hinged length restriction of pitman arm and four connecting rods, its height adjustment range is limited in certain limit, thereby influences the coal seam net picking rate.For this reason, need improve.
Summary of the invention
The purpose of this utility model is exactly at the deficiencies in the prior art, provides a kind of height adjustment range big hydraulic support, combines to adapt to that to adopt in the process Coal Seam Thickness Change big, thereby improves the coal seam net picking rate.
For achieving the above object, the utility model adopts following technical scheme.
A kind of hydraulic support, comprise bracket base, back timber, pitman arm, four connecting rods, hydraulic cylinder, four connecting rods are hinged by bearing pin and pitman arm, and hydraulic cylinder is connected with bracket base by the cylinder seat, and the articulated position of four connecting rods and pitman arm is arranged to adjustable structure on described four connecting rods; Described hydraulic cylinder is provided with and increases the structure of regulating height.
Adopt the utility model of aforementioned techniques scheme, owing to the articulated position of four connecting rods on described four connecting rods and pitman arm is arranged to adjustable structure; Described hydraulic cylinder is provided with and increases the structure of regulating height.Therefore, comprehensive the adopting when the chance Coal Seam Thickness Change is big in the process in the coal seam, can realize the increase of four connecting rod effective lengths by four connecting rods and pitman arm pin joint position, simultaneously, utilize the increase of the hydraulic cylinder amplitude of accommodation to realize the purpose that the hydraulic support height amplitude of accommodation increases.
In the aforementioned techniques scheme, the articulated position adjustable structure of four connecting rods and pitman arm can be realized in the following manner on described four connecting rods, the one, with the pin shaft hole that cooperates with corresponding bearing pin on four connecting rods be arranged to along extreme direction under four length of connecting rods extend a plurality of, reach the purpose of hydraulic support Height Adjustment amplitude increase by the pin shaft hole of selecting to use diverse location; The pin shaft hole that cooperates with corresponding bearing pin on the two, four connecting rod is set to strip hole, and two ports of export at the strip hole of four connecting rods arrange four connecting rods group piece, establish the cylindrical hole that cooperates with bearing pin on the four connecting rods group piece, four connecting rods group piece can form a fixed connection at a plurality of desired locations along four length of connecting rod lower end bearing of trends and four connecting rods, reach the purpose that hydraulic support Height Adjustment amplitude increases by adjusting four connecting rods group piece with the position of fixedlying connected of four connecting rods, simultaneously, guarantee the stability of hydraulic support in the supporting process.The pin shaft hole that cooperates with corresponding bearing pin on the three, four connecting rod is set to strip hole, bearing pin is T font ground and connects a thread, the thread rod part end of thread stretches out four connecting rod lower ends and screws togather an adjusting nut by the perforation on four connecting rods, realize bearing pin in the adjustment of four connecting rod positions by rotating nut, to reach the purpose that hydraulic support Height Adjustment amplitude increases.The structure that height is regulated in the increase that hydraulic cylinder is provided with can realize that the existing one-level hydraulic cylinder of the first is set to the two-stage hydraulic cylinder by following dual mode.This mode can conveniently realize adjusting, but must increase cylinder diameter to guarantee the stability of its support; It two is that the disconnectable standby seat that increases is set between the cylinder seat of hydraulic cylinder and bracket base.Use where necessary and increase the purpose that seat realizes that the hydraulic support height amplitude of accommodation increases, this mode can overcome the limitation of existing one-level hydraulic cylinder lift height under the prerequisite of the stability of guaranteeing hydraulic support, but can increase the operation easier of Height Adjustment.Therefore, above dual mode cuts both ways, and can specifically select for use at different situations, as select hydraulic cylinder is arranged to the mode of two-stage when newly designing hydraulic support; When original support is transformed, be chosen in the mode that increases seat between cylinder seat and the bracket base.
The utility model beneficial effect compared with prior art is that the hydraulic support height adjustment range is big, and regulates easy to operate, form of structure is many, the choice is big, simultaneously, also can overcome the limitation of hydraulic cylinder lift height under the prerequisite of guaranteeing hydraulic support stability.Utilize this hydraulic support can improve the coal seam net picking rate.
Description of drawings
Fig. 1 is the structural representation of embodiment 1 in the utility model.
Fig. 2 is the structural representation of embodiment 2 in the utility model.
Fig. 3 is the A-A sectional view among the utility model Fig. 2.
Fig. 4 is the structural representation of embodiment 3 in the utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described, but therefore the utility model is not limited among the described scope of embodiments.
Four connecting rods 2 are to be made of a plurality of pin shaft holes 21 that can cooperate with bearing pin 7 that extreme direction under four connecting rods, 2 length of four connecting rods, 2 upper edges extends with the adjustable structure of the articulated position of pitman arm 1 on described four connecting rods 2.
The structure that height is regulated in the increase of described hydraulic cylinder 3 comprises being arranged on and increases seat 5 between hydraulic cylinder 3 cylinder seats 31 and the bracket base 4, increase seat 5 respectively with cylinder seat 31 and disconnectable the fixedlying connected of bracket base 4 formation.
Described bracket base 4 and increase seat and be connected with latch 41 between 5, cylinder seat 31 with increase seat and also be provided with identical latch 41 between 5, latch 41 also can use when cylinder seat 31 directly is connected with bracket base 4, forms the acknowledgment copy that the hydraulic support height is regulated so that increase seat 5.
All the other structures of present embodiment are identical with enforcement 1, do not repeat them here.
All the other structures of present embodiment are identical with enforcement 1, do not repeat them here.
More than though embodiment of the present utility model has been described by reference to the accompanying drawings, but those of ordinary skill in the art can recognize also in the scope to claims and make various variations or modification that these modifications and variations are interpreted as within scope of the present utility model and intention.
Claims (5)
1. hydraulic support, comprise bracket base (4), back timber (6), pitman arm (1), four connecting rods (2), hydraulic cylinder (3), four connecting rods (2) are hinged by bearing pin (7) and pitman arm (1), hydraulic cylinder (3) is connected with bracket base (4) by cylinder seat (31), it is characterized in that last four connecting rods of described four connecting rods (2) (2) are arranged to adjustable structure with the articulated position of pitman arm (1); Described hydraulic cylinder (3) is provided with and increases the structure of regulating height.
2. hydraulic support according to claim 1, it is characterized in that last four connecting rods of described four connecting rods (2) (2) are to be made of a plurality of pin shaft holes (21) that can cooperate with bearing pin (7) that extreme direction under four connecting rods (2) upper edge four connecting rods (2) length extends with the adjustable structure of the articulated position of pitman arm (1).
3. hydraulic support according to claim 1, it is characterized in that, last four connecting rods of described four connecting rods (2) (2) comprise that with the adjustable structure of the articulated position of pitman arm (1) pin shaft hole (21) that described four connecting rods (2) upward cooperate with bearing pin (7) is rectangular poroid, two ports of export of rectangular poroid pin shaft hole (21) are respectively arranged with four connecting rods group piece (8), establish the cylindrical hole (81) that cooperates with bearing pin (7) on four connecting rods group's pieces (8), four connecting rods group's pieces (8) can form a fixed connection by bolt or pivot pin at a plurality of desired locations and four connecting rods (2) that extend along extreme direction under four connecting rods (2) length.
4. hydraulic support according to claim 1, it is characterized in that, last four connecting rods of described four connecting rods (2) (2) comprise that with the adjustable structure of the articulated position of pitman arm (1) pin shaft hole (21) that described four connecting rods (2) upward cooperate with bearing pin (7) is rectangular poroid, be fixedly connected with a thread (9) on the described bearing pin (7), the thread rod part end of thread (9) stretches out four connecting rods (2) lower end and screws togather an adjusting nut (10) by the perforation (22) on four connecting rods (2) with being the T font.
5. according to the described hydraulic support of each claim in the claim 1～4, it is characterized in that, the structure that height is regulated in the increase of described hydraulic cylinder (3) comprises the standby seat (5) that increases that is arranged between hydraulic cylinder (3) cylinder seat (31) and the bracket base (4), increase seat (5) respectively with cylinder seat (31) and disconnectable the fixedlying connected of bracket base (4) formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320140561 CN203214075U (en) | 2013-03-15 | 2013-03-15 | Hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320140561 CN203214075U (en) | 2013-03-15 | 2013-03-15 | Hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203214075U true CN203214075U (en) | 2013-09-25 |
Family
ID=49203621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320140561 Expired - Fee Related CN203214075U (en) | 2013-03-15 | 2013-03-15 | Hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203214075U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233758A (en) * | 2013-03-15 | 2013-08-07 | 四川省华蓥山煤业股份有限公司李子垭南煤矿 | Method for increasing bracket adjustment height in fully mechanized mining face and hydraulic bracket |
-
2013
- 2013-03-15 CN CN 201320140561 patent/CN203214075U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233758A (en) * | 2013-03-15 | 2013-08-07 | 四川省华蓥山煤业股份有限公司李子垭南煤矿 | Method for increasing bracket adjustment height in fully mechanized mining face and hydraulic bracket |
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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: 20130925 Termination date: 20150315 |
|
| EXPY | Termination of patent right or utility model |