CN201024062Y - Dedicated balancing jack for sheltering type hydraulic support - Google Patents
Dedicated balancing jack for sheltering type hydraulic support Download PDFInfo
- Publication number
- CN201024062Y CN201024062Y CNU2007200898015U CN200720089801U CN201024062Y CN 201024062 Y CN201024062 Y CN 201024062Y CN U2007200898015 U CNU2007200898015 U CN U2007200898015U CN 200720089801 U CN200720089801 U CN 200720089801U CN 201024062 Y CN201024062 Y CN 201024062Y
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- CN
- China
- Prior art keywords
- cylinder body
- cylinder
- piston rod
- jack
- utility
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a balance jack specially used for a shield-type hydraulic bracket, comprising a cylinder body, a piston rod arranged in the cylinder body and a guide sleeve sleeved in the cylinder body mouth. A liquid sealing is realized between the guide sleeve and the piston rod, and the cylinder body is connected with the guide sleeve through rectangle threads into a whole. An end part of the piston rod and a bottom part of the cylinder body are all provided with an arc face. A safe valve port is respectively arranged at the cylinder body bottom part and on the cylinder mouth. And then the disassembling is convenient; a cylinder diameter can be enlarged to realize a big working resistance for balancing the jack. And if a locking bolt is arranged on a joint position the effect can be better. The adoption of the balance jack of the utility model can enlarge a cylinder diameter of a balance oil cylinder to Phi 230mm and can result in a 1870 KN working thrust, a 965 KN pull, and the utility model is the biggest balance oil cylinder used for the current shield-type bracket.
Description
Technical field
The utility model relates to the hydraulic support balance jack, especially relates to the special-purpose balance jack that is used for hydraulic shield support.
Background technology
Hydraulic shield support is the support apparatus of fully-mechanized mining working indispensability, along with improving constantly of down-hole mechanical extracting level, require more and more higher to the yield load of hydraulic support, rack beams body balance adjustment ability etc., and possesses the hydraulic shield support that yield load is big, balanced capacity is high, the working resistance of the balance jack that primary prerequisite is a hydraulic support wants big, but present employed balance jack is because structure is limit the requirement that can't satisfy big yield load hydraulic support beam body balance.
The utility model content
The special-purpose balance jack that is used for hydraulic shield support that provides a kind of yield load big is provided the utility model purpose.
For achieving the above object, the utility model can be taked following technical proposals:
The special-purpose balance jack that is used for hydraulic shield support described in the utility model, it comprises cylinder body, is arranged on the piston rod in the cylinder body and is sleeved on the interior orienting sleeve of described cylinder body cylinder mouth, realize liquid sealing between described orienting sleeve and the piston rod, connect as one by square thread between described cylinder body and the orienting sleeve; The end of described piston rod and the bottom of cylinder body are arc surface; Bottom and cylinder mouth place at described cylinder body are provided with relief valve connection respectively.
Junction at described cylinder body cylinder mouth and orienting sleeve is provided with stop screw.
The utility model advantage is to connect as one by square thread between cylinder body cylinder mouth place and the orienting sleeve, can realize easy disassembly like this, can increase cylinder diameter again and realize the big working resistance of balance jack, if be provided with stop screw in its junction, effect can be better; The end of piston rod and the bottom of cylinder body all are set to arc surface, and the arc surface of this arc surface and the back timber of the hydraulic support that links to each other, the Connection Block on the caving shield contacts when jack is worked, and can improve the force-bearing situation that connects bearing pin; Bottom and cylinder mouth place at described cylinder body are provided with relief valve connection respectively, can realize quick drainage.Adopt balance jack of the present utility model, can make the balancing cylinder cylinder diameter increase to 230 millimeters of Φ, working thrust reaches 1870KN, and pulling force reaches 965KN, is the balancing cylinder of the maximum used on the present shield.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is that the A of Fig. 1 is to view.
The specific embodiment
As shown in the figure, the special-purpose balance jack that is used for hydraulic shield support described in the utility model, comprise cylinder body 1, be arranged on the piston rod 2 in the cylinder body 1 and be sleeved on the interior orienting sleeve 3 of described cylinder body 1 cylinder mouth, realize liquid sealing between described orienting sleeve 3 and the piston rod 2, connect as one by square thread between described cylinder body 1 and the orienting sleeve 3, be provided with stop screw 5 in the junction of the two; The bottom of the end of described piston rod 2 and cylinder body 1 is arc surface; Bottom and cylinder mouth place at described cylinder body 1 are provided with relief valve connection 4 respectively.
Claims (2)
1. special-purpose balance jack that is used for hydraulic shield support, it comprises cylinder body (1), is arranged on the piston rod (2) in the cylinder body (1) and is sleeved on the interior orienting sleeve (3) of described cylinder body (1) cylinder mouth, realize liquid sealing between described orienting sleeve (3) and the piston rod (2), it is characterized in that: connect as one by square thread between described cylinder body (1) and the orienting sleeve (3); The bottom of the end of described piston rod (2) and cylinder body (1) is arc surface; Bottom and cylinder mouth place at described cylinder body (1) are provided with relief valve connection (4) respectively.
2. the special-purpose balance jack that is used for hydraulic shield support according to claim 1 is characterized in that: the junction at described cylinder body (1) cylinder mouth and orienting sleeve (3) is provided with stop screw (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200898015U CN201024062Y (en) | 2007-03-27 | 2007-03-27 | Dedicated balancing jack for sheltering type hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200898015U CN201024062Y (en) | 2007-03-27 | 2007-03-27 | Dedicated balancing jack for sheltering type hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201024062Y true CN201024062Y (en) | 2008-02-20 |
Family
ID=39097916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200898015U Expired - Lifetime CN201024062Y (en) | 2007-03-27 | 2007-03-27 | Dedicated balancing jack for sheltering type hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201024062Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489791A (en) * | 2011-11-30 | 2012-06-13 | 兖矿集团有限公司 | Thread machining method for guide sleeve set and lifting jack |
| CN104594935A (en) * | 2015-01-21 | 2015-05-06 | 巨隆液压设备(集团)有限公司 | Hydraulic bracket top bream balance maintaining device |
-
2007
- 2007-03-27 CN CNU2007200898015U patent/CN201024062Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489791A (en) * | 2011-11-30 | 2012-06-13 | 兖矿集团有限公司 | Thread machining method for guide sleeve set and lifting jack |
| CN102489791B (en) * | 2011-11-30 | 2014-04-02 | 兖矿集团有限公司 | Thread machining method for guide sleeve set and lifting jack |
| CN104594935A (en) * | 2015-01-21 | 2015-05-06 | 巨隆液压设备(集团)有限公司 | Hydraulic bracket top bream balance maintaining device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhengzhou Coal Machinery Integrated Equipment Co., Ltd. Assignor: Zhengzhou Coal Mining Machinery Group Co., Ltd. Contract fulfillment period: 2007.8.20 to 2017.3.27 Contract record no.: 2008410000198 Denomination of utility model: Dedicated balancing jack for sheltering type hydraulic support Granted publication date: 20080220 License type: Exclusive license Record date: 20081216 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.8.20 TO 2017.3.27; CHANGE OF CONTRACT Name of requester: ZHENG ZHOU COAL MACHINE EQUIPMENT CO., LTD. Effective date: 20081216 |
|
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: No. 105, Huashan Road, Henan, Zhengzhou Province, China: 450013 Patentee after: Zhengzhou Coal Mining Machinery Group Co., Ltd. Address before: No. 105, Huashan Road, Henan, Zhengzhou Province, China: 450013 Patentee before: Zhengzhou Coal Mining Machinery Group Co., Ltd. |
|
| C56 | Change in the name or address of the patentee |
Owner name: ZHENGZHOU MINE MACHINE GROUP CO., LTD. Free format text: FORMER NAME: ZHENGZHOU COAL MINE MACHINERY GROUP CO., LTD. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080220 |
|
| CX01 | Expiry of patent term |