CN207554094U - A kind of new type hydraulic bearer balance jack protective device - Google Patents
A kind of new type hydraulic bearer balance jack protective device Download PDFInfo
- Publication number
- CN207554094U CN207554094U CN201721662390.4U CN201721662390U CN207554094U CN 207554094 U CN207554094 U CN 207554094U CN 201721662390 U CN201721662390 U CN 201721662390U CN 207554094 U CN207554094 U CN 207554094U
- Authority
- CN
- China
- Prior art keywords
- balance
- axis pin
- otic placode
- caving shield
- top beam
- 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 - Fee Related
Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 21
- 241000219122 Cucurbita Species 0.000 claims description 4
- 235000009852 Cucurbita pepo Nutrition 0.000 claims description 4
- 238000013461 design Methods 0.000 description 8
- 238000010008 shearing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Abstract
The utility model discloses a kind of new type hydraulic bearer balance jack protective devices; including balancing limiting plate; top beam otic placode, the caving shield otic placode being respectively welded on top beam and caving shield, axis pin and the safeguard protection chain being connected across mounting hole among the balance limiting plate with caving shield.The balance limiting plate top is hinged by the axis pin and the top beam otic placode, and lower part is equipped with the open slot that the axis pin can be made free to slide, is hinged and connected by the axis pin across the open slot with the caving shield otic placode.The utility model is simple in structure, convenient for assembling, the safety of energy effective protection balance jack and operating personnel.
Description
Technical field
The utility model is related to a kind of hydraulic support balance jack, especially a kind of new type hydraulic bearer balance jack
Protective device.
Background technology
Hydraulic support is a kind of key equipment of fully-mechanized coalface, its adaptability and reliability is to influence
The key factor of fully mechanized mining.Wherein, hydraulic shield support is adaptable to top plate, and support protective efficacy is high, is domestic external solution
Press the Main Trends of The Development of stent especially high working face hydraulic support.In common hydraulic shield support, mainly pass through balance
Jack carrys out adjusting bracket top beam to the support resultant force of top plate and the position of point of resultant force, and top plate is fitted so as to enhance stent
Answering property and reliability.And according to Design of Powered Supports code requirement, hydraulic shield support is in design, balance jack stroke
The maximum angle requirement of top beam and caving shield and minimum angle requirement should be able to be met.But hydraulic shield support in use,
Balance jack can only mechanically adjust top beam, be covered because the reasons such as operating condition is severe, operation error usually will appear
Guard beam is more than design limit angle with top beam angle, causes balance jack disabling damage, so as to cause hydraulic support to top plate
Supporting effect is poor, the problems such as maintenance of equipment expense height.At present using the measure of widest reply balance jack failure be
The angle of control top beam and caving shield in a certain range makes top beam horizontal with pedestal holding as possible.Either in design balance thousand
During jin top, under the premise of its effective travel is met, suitably increase the stroke range of balance jack, when top beam and caving shield
When reaching mechanical dead point, balance jack still retains certain stroke more than needed, so as to play the work of protection balance jack
With.
But top beam connect the components such as ear mount with caving shield hinging pin shaft, balance jack and will bear larger shearing at this time
And moment of flexure, it is easy to be broken, cause top beam support force inadequate, the effect of actual support top plate is poor.These above-mentioned methods can not
It tackles the problem at its root, while also brings the problem of new to design and use.
Utility model content
The purpose of this utility model, which is to provide, a kind of novel can reliably and effectively prevent balance jack from failing and protecting
Protect the hydraulic support balance jack protective device of operating personnel.
To achieve these goals, a kind of new type hydraulic bearer balance jack protective device provided by the utility model,
It is characterized by comprising balance limiting plate, top beam otic placode, the caving shield otic placode being respectively welded on top beam and caving shield, axis pin and
Safeguard protection chain；The balance limiting plate top is hinged by the axis pin and the top beam otic placode, and lower part is described equipped with that can make
Axis pin open slot free to slide is hinged and connected by the axis pin across the open slot with the caving shield otic placode；It is described
Safeguard protection chain passes through the mounting hole set among the balance limiting plate to be connected with caving shield.
Preferably, there is the distance between twice groove, the groove on the axis pin outer diameter for the balance limiting plate
Thickness.
Preferably, the top beam otic placode and the caving shield otic placode are respectively welded at the top beam and the caving shield lower cover
Intralamellar part.
Preferably, similar to gourd shape, side outwardly protrudes for the balance limiting plate lower part.
A kind of new type hydraulic bearer balance jack protective device provided by the utility model, has the advantages that：
1. when encounter bad working environments balance jack it is loaded excessive when, axis pin fracture, this protective device will be to
Column direction is swung, and since the safeguard protection chain is fixedly connected on the caving shield, can reliably limit the protection dress
The amplitude of swing is put, can ensure the safety of operating personnel, operating personnel find and timely manipulation valve, just can effectively avoid
Balance jack fails.The protective device is simple in structure, and convenient for assembling and repairing, and it is low to manufacture maintenance cost.
2. twice groove is machined on the axis pin outer diameter, the yield shear stress and moment of flexure that can bear than common axis pin
Small, once balance jack stress is excessive, axis pin will be broken when excessive by shearing force, this protective device will be to column side
To swing.
3. the top beam otic placode and the caving shield otic placode are respectively welded in the top beam and the caving shield lower cover
Portion, can effectively avoid that otic placode stress is excessive, and weld strength is inadequate, be damaged.
4. the balance limiting plate lower part is similar to gourd shape, side outwardly protrudes, and such structure design can increase flat
The intensity of weighing apparatus limiting plate, avoids along open slot outer rim fracture damage.
Description of the drawings
Fig. 1 is a kind of new type hydraulic bearer balance jack protective device structure diagram；
Fig. 2 is the partial enlarged view of part A in Fig. 1；
Fig. 3 is the structure diagram of the axis pin；
In figure：
1. axis pin 2. balances 3. top beam otic placode of limiting plate, 4. caving shield otic placode, 5. safeguard protection chain
6. 7. caving shield of top beam.
Specific embodiment
As illustrated in fig. 1 and 2, a kind of new type hydraulic bearer balance jack protective device, including balance limiting plate 2, top beam
Otic placode 3, caving shield otic placode 4, axis pin 1 and safeguard protection chain 5.The top beam otic placode 3 and the caving shield otic placode 4 are respectively welded at
Inside 7 lower cover of top beam 6 and caving shield.Balance 2 top of limiting plate and centre are respectively equipped with a mounting hole, and lower part is similar
Gourd shape protrudes outward one piece.Balance 2 top of limiting plate passes through mounting hole and the top beam ear by the axis pin 1
Plate 3 is hinged, and lower part is provided with the open slot that the axis pin 1 can be made free to slide, and the open slot and institute are passed through by the axis pin 1
Caving shield otic placode 4 is stated to be hinged and connected；The safeguard protection chain 5 passes through the mounting hole set among the balance limiting plate 2 with covering
Guard beam 7 is fixedly linked.The top beam otic placode 3, caving shield otic placode 4 and balance limiting plate 2 are processed using high-strength steel sheet Q690
It forms, the larger requirement of suffered shearing force and moment of flexure during work can be met.
As shown in figure 3, there is the distance between twice groove, the groove to be limited for the balance on 1 outer diameter of axis pin
The thickness of plate 2.When balance jack works, the hinged axis pin 1 with the caving shield otic placode 4, in the balance limiting plate 2
It is slided in the open slot of lower part.When balance jack works under normal circumstances, stroke-limit is less than, the axis pin 1 does not reach
The extreme position of the balance limiting plate 2, plays certain position-limiting action；When encountering, bad working environments balance jack stress is excessive
When, the axis pin 1 can be broken when excessive by shearing force, this protective device will be swung to column direction.When swinging, by
It is fixedly connected on the caving shield 7 in the safeguard protection chain 5, plays position-limiting action, can reliably limit the protective device
The amplitude of swing will not damage operating personnel.Operating personnel hear the fracture of axis pin 1 and the safeguard protection chain 5
Mobile sound finds that the protective device is swung to column, with regard to that can judge that balance jack is loaded excessive at this time, in time
Manipulation valve just can effectively avoid balance jack constant overload from failing caused by working.The hydraulic support balance thousand
Jin roof protective device, it is simple in structure, convenient for assembling and using, make fully-mechanized mining equipment running more smooth, meet state coal safety
The requirement of rational exploitation.
Specific case used herein elaborates utility model design, and the explanation of above example is
It is used to help understand the core concept of the utility model.It should be pointed out that for those skilled in the art,
Under the premise of not departing from utility model design, any obvious modification, equivalent replacement or the other improvements made should all
It is included within the scope of protection of this utility model.
Claims (4)
1. a kind of new type hydraulic bearer balance jack protective device, it is characterised in that including balancing limiting plate, be respectively welded at
Top beam otic placode, caving shield otic placode on top beam and caving shield, axis pin and safeguard protection chain；The balance limiting plate top passes through institute
It states axis pin to be hinged with the top beam otic placode, lower part is equipped with the open slot that the axis pin can be made free to slide, wears by the axis pin
The open slot is crossed to be hinged and connected with the caving shield otic placode；The safeguard protection chain passes through to be set among the balance limiting plate
Mounting hole be connected with caving shield.
2. new type hydraulic bearer balance jack protective device according to claim 1, it is characterised in that outside the axis pin
There is thickness of the distance between the twice groove, the groove for the balance limiting plate on diameter.
3. new type hydraulic bearer balance jack protective device according to claim 1, it is characterised in that the top beam ear
Plate and the caving shield otic placode are respectively welded inside the top beam and the caving shield lower cover.
4. new type hydraulic bearer balance jack protective device according to any one of claims 1 to 3, it is characterised in that institute
Balance limiting plate lower part is stated similar to gourd shape, side outwardly protrudes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721662390.4U CN207554094U (en) | 2017-12-04 | 2017-12-04 | A kind of new type hydraulic bearer balance jack protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721662390.4U CN207554094U (en) | 2017-12-04 | 2017-12-04 | A kind of new type hydraulic bearer balance jack protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207554094U true CN207554094U (en) | 2018-06-29 |
Family
ID=62679015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721662390.4U Expired - Fee Related CN207554094U (en) | 2017-12-04 | 2017-12-04 | A kind of new type hydraulic bearer balance jack protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207554094U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115182767A (en) * | 2022-06-30 | 2022-10-14 | 郑州煤矿机械集团股份有限公司 | Quick dismounting and mounting method for hydraulic support balance jack |
-
2017
- 2017-12-04 CN CN201721662390.4U patent/CN207554094U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115182767A (en) * | 2022-06-30 | 2022-10-14 | 郑州煤矿机械集团股份有限公司 | Quick dismounting and mounting method for hydraulic support balance jack |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207554094U (en) | A kind of new type hydraulic bearer balance jack protective device | |
| CN111762699A (en) | Safety tower crane and implementation method thereof | |
| CN203875330U (en) | Steel ladle covering device | |
| CN107555322A (en) | The multi-angle gib arm of crane | |
| CN208200213U (en) | A kind of overturn-preventing spider crane with permanent magnetism protective device | |
| CN203769285U (en) | Anti-dropping device for attached-type lifting scaffold | |
| CN215711020U (en) | Hoisting hook for assembly type steel structure building | |
| CN210686023U (en) | Large mining height hydraulic support top and side protection mechanism | |
| CN208636974U (en) | A kind of monitoring alarm device of community support | |
| CN209352386U (en) | A kind of assembly type building hoist monitoring device that visual range is wide | |
| CN207276087U (en) | A kind of boom structure for building loop wheel machine | |
| CN207647535U (en) | Movable twigs of the chaste tree formula back link fixes side guard plate and transboundary holder | |
| CN210710645U (en) | Auxiliary turning device for top beam of hydraulic support | |
| CN204778518U (en) | Hoist lifts by crane operation lift safety arrangement | |
| CN207903777U (en) | A kind of balancing device of crane | |
| CN208981164U (en) | A kind of hoistable platform that road and bridge construction protection effect is excellent | |
| CN107939133B (en) | A kind of shearing-type eccentrically braces structure of thermal power plant bunker bay | |
| CN206553112U (en) | A kind of general's pillar ocean platform crane anti-squat system | |
| CN201486576U (en) | Connecting device | |
| CN106315436A (en) | Samson post type offshore platform crane anti-back-tipping device | |
| CN202575788U (en) | Guyed arm support anti-back tilting device of crane | |
| CN205709626U (en) | A kind of hoisting mechanism on mucking machine | |
| CN215626527U (en) | Novel special hydraulic lifting machine is repaiied to vapour | |
| CN212407455U (en) | Novel bracket connecting piece | |
| CN107089571A (en) | A kind of safety device of lifter for building construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180629 |