CN201874570U - Hydraulic breaking hammer - Google Patents

Hydraulic breaking hammer Download PDF

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Publication number
CN201874570U
CN201874570U CN2010206430725U CN201020643072U CN201874570U CN 201874570 U CN201874570 U CN 201874570U CN 2010206430725 U CN2010206430725 U CN 2010206430725U CN 201020643072 U CN201020643072 U CN 201020643072U CN 201874570 U CN201874570 U CN 201874570U
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CN
China
Prior art keywords
hydraulic
hydraulic cylinder
breaking hammer
piston
drill steel
Prior art date
Application number
CN2010206430725U
Other languages
Chinese (zh)
Inventor
杨国平
王亮
王静悦
Original Assignee
上海工程技术大学
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Application filed by 上海工程技术大学 filed Critical 上海工程技术大学
Priority to CN2010206430725U priority Critical patent/CN201874570U/en
Application granted granted Critical
Publication of CN201874570U publication Critical patent/CN201874570U/en

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Abstract

The utility model relates to a hydraulic breaking hammer, which comprises a drill rod, a hydraulic cylinder and a nitrogen chamber, wherein the drill rod is arranged at the front part of the hydraulic cylinder, the hydraulic cylinder is provided with a front working cavity and a rear working cavity, a piston is arranged in each working cavity, a reversing valve is arranged at the top of the hydraulic cylinder, and the nitrogen chamber is arranged at the rear part of the hydraulic cylinder. Compared with the prior art, the hydraulic breaking hammer has a simple structure and is convenient to use, the piston can not collide with a piston ring in a return stroke in the moving process, the larger impact energy can also be ensured in a stroke, and the performance of a hydraulic impactor can be improved by modifying the structural parameter of the piston.

Description

A kind of hydraulic breaking hammer

Technical field

The utility model relates to a kind of hydraulic means, especially relates to a kind of hydraulic breaking hammer.

Background technology

The impact property of hydraulic breaking hammer reflects the reasonability of its structural parameters, is an importance weighing hydraulic breaking hammer level and quality.Analyzing the performance of hydraulic breaking hammer, and examine its quality with the experimental technique of science, is correctly to estimate hydraulic breaking hammer and seek the improved effective measures of properties of product.And the parameter testing of hydraulic breaking hammer impact property is a difficult point always, relative frequency of impact, and the detection of impact energy is very difficult.In the sample of many manufacturers or technological document, often only provide frequency of impact, do not mark impact energy.For frequency of impact, the detection of impact energy is a very difficult expensive thing that wastes time and energy.Because do not have unified detection method and standard, measured result's accuracy, repeatability, comparativity are all very poor, and be controversial easily, the reason of many manufacturers do not provide impact energy that Here it is.Though some manufacturer provides the impact energy data, impact energy detects with diverse ways in different manufacturers, causes the inconsistent of data.This situation has caused the confusion in market, the hydraulic breaking hammer impact energy data that have or even calculate according to so-called theory, through test, its error is just not bigger, have in addition surpass 50%.

Development along with hydraulic technique, the application of hydraulic breaking hammer in social all trades and professions more and more widely, from the initial bore operation that is used for the mine geotechnics and the second-time breakage of large rock mass, develop into and be used for tunneling today, remove road and bridge and building, broken pitch and rigid pavement and removed smelted furnace cinder and carry out underwater operation etc. because the flexibility of its work and the effect that the raising of labor productivity is brought into play thereof, more and more receive the attention of mine and construction department, have a wide range of applications and the great demand amount.Must bring huge economic benefit and increase the occupation rate of its product to manufacturer and produce high performance hydraulic breaking hammer in market.

Abroad, the researcher has proposed the computer model be made up of impactor, drill steel and bore bit etc., one dimensional stress ripple theory based on piston, drill steel and bore bit, and the interaction force between bore bit and rock and the relation of cutter saturating ability and hysteresis have been supposed, computer analyzing model when developing continuous rock drilling meets the real work situation of hammer drill more.What the foreign study personnel stressed is to set up computer simulation model at concrete hydraulic gate, research hydraulic impactor structural parameters, impact parameter and optimization in Properties, and in computer simulation, introduce by the test actual measurement obtain by the recoil coefficient of impact body, simulation obtains the optimum inflatable chamber volume of optimum oil return opening area, accumulator of corresponding hydraulic impact mechanism and back cavity compression area etc.When carrying out computer simulation, the foreign study personnel more pay attention to the comparison with the experimental test result, and according to the test data carry out the correction of computation model, for target efficiency, the adjustment of carrying out the hydraulic shock parameter that improves beater mechanism and the structure of optimizing hammer drill provide foundation, improved the precision of advanced development greatly, shorten the design cycle, reduced unnecessary development cost.

The utility model content

The purpose of this utility model is exactly that a kind of simple in structure, hydraulic breaking hammer that technological parameter is easy to adjust is provided in order to overcome the defective that above-mentioned prior art exists.

The purpose of this utility model can be achieved through the following technical solutions:

A kind of hydraulic breaking hammer, it is characterized in that, this hydraulic breaking hammer comprises drill steel, hydraulic cylinder and nitrogen chamber, described drill steel is located at the front portion of hydraulic cylinder, described hydraulic cylinder is provided with former and later two working chambers, be provided with piston in the working chamber, the top of hydraulic cylinder is provided with reversal valve, and described nitrogen chamber is located at the rear portion of hydraulic cylinder.

Described drill steel is socketed in the front portion of hydraulic cylinder through precursor.

Described precursor comprises fairlead and drill steel retainer lining, and described fairlead is set in the middle part of drill steel, and described drill steel retainer lining is fixed in the rear portion of drill steel.

The nose shape of described drill steel is pyramid, taper shape, chock shape or blunt shape.

Described hydraulic cylinder connects precursor and nitrogen chamber through through bolt.

Described reversal valve comprises valve gap, spool and clack box, and described spool is located in the clack box, and described valve gap is located at the top of spool, and described clack box is located at the top of hydraulic cylinder.

Compared with prior art, the utility model is simple in structure, and is easy to use, in the piston motion process, when its backhaul, can not collide, can guarantee bigger impact energy again during stroke with piston ring, by modification, promptly can improve the performance of hydraulic impactor to the piston structure parameter.

Description of drawings

Fig. 1 is a main TV structure schematic diagram of the present utility model;

Fig. 2 is a plan structure schematic diagram of the present utility model.

1 is that drill steel, 2 is that fairlead, 3 is that drill steel retainer lining, 4 is that valve gap, 5 is that spool, 6 is that clack box, 7 is that piston, 8 is that precursor, 10 is that drill rod pin, 10 is that preceding working chamber, 11 is that working chamber, 13 was a nitrogen chamber after hydraulic cylinder, 12 was among the figure.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is elaborated.

Embodiment

A kind of hydraulic breaking hammer, its structure is shown in Fig. 1~2, this hydraulic breaking hammer comprises drill steel 1, hydraulic cylinder 11 and nitrogen chamber 13, drill steel 1 is socketed in the front portion of hydraulic cylinder 11 through precursor 8, this precursor 8 comprises fairlead 2 and drill steel retainer lining 3, fairlead 2 is set in the middle part of drill steel 1, and drill steel retainer lining 3 is fixed in the rear portion of drill steel 1, and is fixing through drill rod pin 10.The nose shape of drill steel 1 can be pyramid, taper shape, chock shape or blunt shape, and what present embodiment adopted is pyramid.

Hydraulic cylinder 11 is connected the rear portion of precursor 8 through through bolt, working chamber 10 and back working chamber 12 before this hydraulic cylinder 11 is provided with, the space of forming reciprocating motion of the pistons, be provided with piston 7 in the hydraulic cylinder 11, it is the heart component of hydraulic breaking hammer, the front and back working chamber has high requirement to flow, finishes the high-low pressure cycle operation with minimum oil hydraulic system, belongs to precise machining equipment.The top of hydraulic cylinder is provided with reversal valve, comprises valve gap 4, spool 5 and clack box 6, and spool 5 is located in the clack box 6, valve gap 4 is located at the top of spool 5, clack box 6 is located at the top of hydraulic cylinder 11, and reversal valve is used to control back cavity and connects and can or disconnect hydraulic oil, realizes the reciprocating motion of piston 7.

Piston 7 is the parts that mainly transmit impact energy, and the hydraulic breaking hammer hammer relies on the kinergety of piston to realize hitting the blow energy fractured rock of acquisition.The shape of piston has bigger influence to the rock breaking efficiency that transmits energy.From the wave mechanics theory as can be known, the piston diameter diameter near bit shank more is good more, and diameter variation is the smaller the better on total length.The important indicator of piston is the hardness of piston, toughness, surface accuracy and the concentricity of material.Adopt the just higher quality of tool of special alloy steel and high-precision heat treatment, under harsh conditions, given play to outstanding effect.The piston that moves up and down in drill steel 1 and the quartering hammer hydraulic cylinder is formed the facility of one, utilizes the hydraulic pressure of hydraulic crawler excavator can convert mechanical blow energy energy to.Adopt the high-quality special rolling-mill section, after heat treatment tough and tensile, wear-resisting, easy fracture not.Hitting thing with quilt directly contacts.

Inflated with nitrogen in the nitrogen chamber 13 stores power.Its effect mainly contains: reduce irregular hydraulic coupling in the oil circuit, reduce simultaneously loading mechanical ratio such as hydraulic crawler excavator and operator's recoil strength; For piston provides part power, nitrogen explosion type hammer hitting power then provides by nitrogen fully, improves and hits crushing efficiency during stroke.Hydraulic pressure---the quartering hammer of pneumatic steel to steel formula hydraulic breaking hammer structural shape is in piston tail an airtight nitrogen chamber 13 to be set, enter the piston ante-chamber by pressure oil and promote backward stroke of the piston, in the time of backward stroke of the piston, nitrogen in the nitrogen chamber is compressed and stored energy, nitrogen expansion during stroke promotes piston stroke and quickens to obtain bigger impact energy.Because during the work of the quartering hammer of this form of structure, the piston back cavity replaces into oil extraction, ante-chamber normal open hydraulic oil, and back cavity advances oil extraction and is controlled by control valve, and piston control valve in impact process has been linked up chamber, piston front and back oil circuit dexterously, greatly reduces the back pressure resistance of piston in stroke procedure.

Claims (6)

1. hydraulic breaking hammer, it is characterized in that, this hydraulic breaking hammer comprises drill steel, hydraulic cylinder and nitrogen chamber, described drill steel is located at the front portion of hydraulic cylinder, described hydraulic cylinder is provided with former and later two working chambers, be provided with piston in the working chamber, the top of hydraulic cylinder is provided with reversal valve, and described nitrogen chamber is located at the rear portion of hydraulic cylinder.
2. a kind of hydraulic breaking hammer according to claim 1 is characterized in that, described drill steel is socketed in the front portion of hydraulic cylinder through precursor.
3. a kind of hydraulic breaking hammer according to claim 2 is characterized in that, described precursor comprises fairlead and drill steel retainer lining, and described fairlead is located at the middle part of drill steel, and described drill steel retainer lining is fixed in the rear portion of drill steel.
4. a kind of hydraulic breaking hammer according to claim 1 is characterized in that, the nose shape of described drill steel is pyramid, taper shape, chock shape or blunt shape.
5. a kind of hydraulic breaking hammer according to claim 1 is characterized in that, described hydraulic cylinder is connected the rear portion of precursor through through bolt, and the preceding working chamber of hydraulic cylinder is communicated with precursor.
6. a kind of hydraulic breaking hammer according to claim 1 is characterized in that described reversal valve comprises valve gap, spool and clack box, and described spool is located in the clack box, and described valve gap is located at the top of spool, and described clack box is located at the top of hydraulic cylinder.
CN2010206430725U 2010-12-06 2010-12-06 Hydraulic breaking hammer CN201874570U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN2010206430725U CN201874570U (en) 2010-12-06 2010-12-06 Hydraulic breaking hammer

Publications (1)

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CN201874570U true CN201874570U (en) 2011-06-22

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103016001A (en) * 2012-12-31 2013-04-03 天地科技股份有限公司 Impact crushing hammer of emulsified liquid
CN103643958A (en) * 2013-12-13 2014-03-19 中铁二十三局集团有限公司 Construction method for excavating weak surrounding rock tunnel by hydraulic breaking hammer
CN103808633A (en) * 2013-12-26 2014-05-21 山东科技大学 Mining-induced fractured rock mass water sand transportation testing system and monitoring method
CN104162462A (en) * 2014-05-29 2014-11-26 襄阳忠良工程机械有限责任公司 Hydraulic breaking hammer
CN104405401A (en) * 2014-10-11 2015-03-11 北京市政路桥股份有限公司 Pneumatic rock crushing device
CN105344412A (en) * 2015-09-16 2016-02-24 辽宁工程技术大学 Mining hydraulic rapid breaking device
CN106049247A (en) * 2016-05-31 2016-10-26 福州麦辽自动化设备有限公司 Mechanical drill rod triggering breaking hammer
CN106545542A (en) * 2016-11-23 2017-03-29 佛山市达曼森密封科技有限公司 A kind of sealing of quartering hammer and guide frame
CN106737435A (en) * 2016-12-20 2017-05-31 合肥市春华起重机械有限公司 A kind of Pneumatic hydraulic bolt punching

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103016001A (en) * 2012-12-31 2013-04-03 天地科技股份有限公司 Impact crushing hammer of emulsified liquid
CN103643958A (en) * 2013-12-13 2014-03-19 中铁二十三局集团有限公司 Construction method for excavating weak surrounding rock tunnel by hydraulic breaking hammer
CN103643958B (en) * 2013-12-13 2016-01-20 中铁二十三局集团有限公司 Hydraulic breaking hammer excavation Modelling of Tunnel Excavation in Soft Rock method
CN103808633A (en) * 2013-12-26 2014-05-21 山东科技大学 Mining-induced fractured rock mass water sand transportation testing system and monitoring method
CN103808633B (en) * 2013-12-26 2016-08-31 山东科技大学 One adopts fragmented rock body water sand migration pilot system and monitoring method
CN104162462A (en) * 2014-05-29 2014-11-26 襄阳忠良工程机械有限责任公司 Hydraulic breaking hammer
CN104405401A (en) * 2014-10-11 2015-03-11 北京市政路桥股份有限公司 Pneumatic rock crushing device
CN104405401B (en) * 2014-10-11 2016-08-24 北京市政路桥股份有限公司 A kind of pneumatic fractured rock facility device
CN105344412A (en) * 2015-09-16 2016-02-24 辽宁工程技术大学 Mining hydraulic rapid breaking device
CN106049247A (en) * 2016-05-31 2016-10-26 福州麦辽自动化设备有限公司 Mechanical drill rod triggering breaking hammer
CN106049247B (en) * 2016-05-31 2018-01-23 泰州市光明电子材料有限公司 A kind of mechanical drill steel triggering quartering hammer
CN106545542A (en) * 2016-11-23 2017-03-29 佛山市达曼森密封科技有限公司 A kind of sealing of quartering hammer and guide frame
CN106737435A (en) * 2016-12-20 2017-05-31 合肥市春华起重机械有限公司 A kind of Pneumatic hydraulic bolt punching

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110622

Termination date: 20131206