CN201236621Y - Improved novel electric driven rock drill - Google Patents
Improved novel electric driven rock drill Download PDFInfo
- Publication number
- CN201236621Y CN201236621Y CNU2008200670751U CN200820067075U CN201236621Y CN 201236621 Y CN201236621 Y CN 201236621Y CN U2008200670751 U CNU2008200670751 U CN U2008200670751U CN 200820067075 U CN200820067075 U CN 200820067075U CN 201236621 Y CN201236621 Y CN 201236621Y
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- drill
- crankshaft
- hammer drill
- motor
- spring
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Abstract
The utility model provides an improved novel electric rock drill. An isolator is arranged at the front end of the drill, and a one-way ring, a drill rotator, a drill rod, a drill clamp seat, a drill clamp are arranged inside a front casing. The electric rock drill is characterized in that the motor of the drill and a crank shaft are arranged coaxially, and the motor is connected to a crank shaft connecting rod component through a reduction gear; a pinion (4) connected with an output shaft of the motor (1) is internally meshed with a gearwheel (5) connected with the crank shaft to form a reduction gear group; a crank shaft cavity, in which the crank shaft connecting rod component (8) is arranged, is a closed housing, in which lubricant is pre-stored; a capsule (7) made of a non-metal soft material is positioned on the casing of the crank shaft cavity; and impact block components (16) are arranged inside the front casing (18) and the drill rotator (17). The utility model has the following characteristics: the overall weight is reduced, so that the utility model is convenient to operate and use; because the structure is simplified, the mass production of the utility model is facilitated; and the weaknesses and shortcomings of the prior rock drill are overcome, the whole machine failure is reduced and the service life is prolonged. Moreover, the utility model has the advantage of lubrication improvement, thereby maximally reducing the consumption of lubricant.
Description
Technical field
The utility model relates to hammer drill, is a kind of improved electric hammer drill specifically.
Background technology
In the technical field that the present invention was suitable for, be widely used the air rock drill that remains that occupies dominant position at present.But because the efficient of air rock drill low (especially when distance is far away slightly), energy consumption is high.And dust pollution and noise pollution are serious.Invest and comprise that the maintenance cost of air compressor is high the first time, and people are actively seeking substitute for these years.Idol has the electric rock drill introduction to see literal in recent years, has individual product appearance desire to replace air rock drill simultaneously.This is undoubtedly the significant thing of part.If a kind of electric rock drill can be arranged, can overcome the shortcoming of air rock drill, all very favourable to the producer and user simultaneously, so, can predict this electric rock drill and will in short period, replace air rock drill comprehensively.And replace air rock drill just both at home and abroad by the big problem of extensively paying attention to and needing to be resolved hurrily comprehensively.
Yet over past ten years, domestic had or once had a few money electric rock drills to emerge, but do not get anywhere.Trace it to its cause, roughly comprise following several aspect:
1. weight is excessive, and the nearly 40KG that weighs that has moves and the preparation difficulty, and the operator is reluctant to use;
2. motor and crank mechanism are arranged side by side, cause producing in enormous quantities comparatively difficulty of processing.
3. electric rock drill generally is divided into piston hold one's breath formula structure, cam-type structure and piston spring formula structure.Wherein piston is held one's breath structure owing to inefficiency and not by customer acceptance.The not only complicated heaviness of cam-type structure is difficult to processing but also very easily damages.And the piston spring structure is too high because of the restriction and the movement velocity of weight and geometric position, and spring is at higher acceleration of when bounce-back, and causing wherein, some important document damages easily.And this indivedual damage can cause chain effect.Therefore operation and maintenance all has very big difficulty;
4. electric rock drill generally all carries fuel tank, when connecting rod promotes piston and impact to cause the crankshaft cavity negative pressure when part moves ahead and suck lubrication oil (sucking air simultaneously) from fuel tank.But consider that from overall volume weight fuel tank all can not be done very greatly.Otherwise can increase the weight of machine greatly.So, since the high-speed cruising of bent axle (usually more than changeing in one minute 2000, if, can increase complete machine weight greatly because driven gear is too big in this parallel arrangement mode.Therefore it is too many to slow down.) oil in the fuel tank is general can not surpass 10 minutes even just blotted only in shorter time, they will be discharged from the venthole of fore-body.Like this, just require frequent oiling in the time at darg.In addition through estimation (is to be used for oil suction to calculate by 1% share in every suction once), this can make machine consume about 1.5～2 liters of lubrication oil in each hour, and this is unacceptable to the general user.
Summary of the invention
The purpose of this utility model provides and a kind ofly can alleviate overall weight, simplifies weak link and deficiency that structure can overcome existing type again, reduces the complete machine fault, increases the service life, reduces the improved electric hammer drill of specific lubricating oil consumption.
The motor of described improved electric hammer drill is connected to the crankshaft-link rod assembly by reduction gearing, impactor is in middle casing, front end has isolator, unidirectional circle, commentaries on classics pricker device, drill steel, pricker deck, pricker card are arranged in the front housing, it is characterized in that: the coaxial setting of described motor and bent axle, and be connected to the crankshaft-link rod assembly by reduction gearing, pinion that is connected with described motor output shaft and the gear wheel that is connected with bent axle mutually in engagement, become train of reduction gears.
The crankshaft cavity at described crankshaft-link rod assembly place is one to prestore the airtight cavity of lubrication oil in it, is provided with a capsule of being made by nonmetal soft material on the crankshaft cavity housing.
Be provided with the impact block assembly in described front housing and commentaries on classics pricker device, the impact block assembly is made up of module tail, connecting rod, interior coil spring, cycle spring, connection-core and module bump head.
The beneficial effects of the utility model:
1, alleviated overall weight, made things convenient for and manipulated.
2, simplify structure and be beneficial to production in enormous quantities, made things convenient for after-sale service and user's self simple-to-maintain simultaneously.
3, overcome the weak link and the deficiency of existing type, reduced the complete machine fault, prolonged application life.
4, improved lubricatedly, reduced specific lubricating oil consumption to greatest extent.
Description of drawings
Fig. 1 is the utility model structural representation,
Fig. 2 is an impact block modular construction schematic diagram.
Among the figure: 1-motor, 2-water jacket, 3-motor case, 4-pinion, 5-gear wheel, 6-bent axle shell, 7-capsule, 8-crankshaft-link rod assembly, 9-middle casing, 10-crankshaft group oil sealing, 11-impactor, 12-isolator, 13-oil storage felt, 14-friction plate, 15-unidirectional circle, 16-impact block assembly, 17-commentaries on classics pricker device, 18-front housing, 19-drill steel, 20-oil sealing, 21-strong point, 22-oil filler point, 23-pricker deck, 24-pricker card, 25-straight pin, 26-module tail, 27-connecting rod, 28-interior coil spring, 29-cycle spring, 30-connection-core, 31-module bump head.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further specified: the present utility model people is according to oneself practical experience such as the manufacturing, Installation and Debugging, user's mode of occupation and requirement for many years, carry out making behind the deep theory analysis following simultaneously to manufacturing all practicable technical scheme of working service:
Electric hammer drill as shown in fig. 1, its motor 1 by reduction gearing be connected to crankshaft-link rod assembly 8, impactor 11 in middle casing 9, front end has isolator 12, unidirectional circle 15 is arranged in the front housing 18, change pricker device 17, drill steel 19, pricker deck 23, pricker card 24, feature of the present utility model is: the coaxial setting of described motor and bent axle, and be connected to the crankshaft-link rod assembly by reduction gearing, pinion 4 that is connected with described motor 1 output shaft and the interior mutually engagement of the gear wheel that is connected with bent axle 5 become train of reduction gears.The crankshaft cavity at described crankshaft-link rod assembly 8 places is one to prestore the airtight cavity of lubrication oil in it, is provided with a capsule 7 of being made by nonmetal soft material on the crankshaft cavity housing.Described impactor 11 directly is connected with crankshaft-link rod by straight pin 25.Between described isolator 12 and unidirectional circle 15, be provided with oil storage felt 13.Show as Fig. 1,2, be provided with impact block assembly 16 at described front housing 18 with changeing in the pricker device 17, impact block assembly 16 is made up of module tail 26, connecting rod 27, interior coil spring 28, cycle spring 29, connection-core 30 and module bump 31.Coil spring 28 and cycle spring 29 revolve the dual spring form in establishing in described impact block assembly about being, and module bump 31 part place among the interior coil spring 28.The supporting leg strong point 21 of " worker " font or flute profile is set outside the casing 9 in described.
Motor 1 rotates via pinion 4 and drives 5 rotations of internal tooth cylinder gear wheels, drives the crankshaft rotating in the crankshaft-link rod assembly 8, drives impactors 11 by straight pin 25 and does reciprocating linear motion with the impact block assembly that is attached thereto.When bent axle nearly rotates half cycle, the module bump of impact block assembly 16 front ends 31 direct bump drill steel 19 afterbody carry out rock drilling, impactor 11 and impact block assembly 16 move forward then, interior coil spring 28 in the compression impact block assembly 16 and cycle spring 29 and finish the primary drilling process.After the Rotate 180 °, impactor 11 and impact block assembly 16 begin to do return movement.Unidirectional spinfunction by unidirectional circle 15 during return movement drives angle of commentaries on classics pricker device 17 rotations, and then drive drill steel 19 rotates an angle simultaneously.Prepare next rock drilling circulation.When travelling forward, also be because the one-directional rotation function of unidirectional circle 15 is changeed pricker device 17 and do not rotated.
Water enters between water jacket 2 and the motor case 3 from water inlet tap motor is cooled off.Flow through the water inlet tap that the back arrives front housing 18 from faucet, this water inlet tap is located on the position between 20 two on the oil sealing, enters drill steel 19 then until drill steel 19 front ends, by flowing out row's powder in the hole of drill bit.
The air-proof condition of crankshaft two end and the airtight crankshaft cavity of oil sealing 10 common formations are during the cavity space stereomutation, by capsule 7 compensation.
Lubricating by oil storage felt 13 between the helical spline of impactor front end and the unidirectional circle 15 guarantees, and is 13 repairings of oil storage felt by the oil filler point on the front housing 22.
From Fig. 1 as seen, in the utility model design scheme, motor 1 and bent axle adopt " coaxial " to arrange.Compare with parallel construction, its advantage is:
Owing to adopt water-cooled machine and water row powder, arrangement will be avoided that flow backwards takes place and advances in the motor stator like this.
Because the motor part can be separated with the bent axle part, as long as suitably design, bent axle can obtain the covering to the motor different capacity.To be used for different occasions, this is supporting very favourable to producing applicable to the motor of various power below the 3KW and rotating speed for for example same bent axle.
Owing to use engagement system in the roller gear, not only improve the gear meshing state and improved service life of gear reduction gear volume weight, the particularly important is, can use high-speed motor to reduce motor weight, and can make bent axle obtain higher output torque, this is very favorable to improving the punching degree of depth and the speed of punchinging of hammer drill.
Compare with arrangement arranged side by side, casing has reduced intermediate link, can obtain less casing weight like this.
Because motor case 3 and bent axle shell 6 are the individualities that separate separately, not contact of the form and position tolerance of housing so separately, very favourable to the realization of process equipment and product required precision like this.
In the present utility model, adopted and the diverse lubricating system of existing type.In the type that appears on the market, employing without exception is subsidiary fuel tank outside crankshaft cavity, when crankshaft-link rod promotes piston and does reciprocating linear motion, in crankshaft cavity, can form negative pressure, this negative pressure will be from the hole of " one way valve " formula in suck air inspiration lubrication oil from fuel tank simultaneously also.Its shortcoming is the very big and frequently oiling of fuel consumption.
As seen from Figure 1, the present invention is by the airtight condition and the oil sealing among Fig. 1 10 of crankshaft two end, make crankshaft cavity become an airtight cavity, before dispatching from the factory, promptly install the lubrication oil of some, like this, both can guarantee lubricating in the use, and greatly reduce the loss of lubrication oil---promptly realized " disposable lubricated ".
Center on the realization of this among the present invention " disposable lubricated " design, the present utility model has adopted the design of following important and well-off border meaning:
Heating and heat radiation: in the present invention,, can obtain bigger speed reducing ratio owing to adopt engagement in the gear.Usually can make speed of crankshaft 1800 change or below, like this, will reduce its calorific value.Simultaneously, bent axle shell 6 uses the good aluminium alloys of heat transfer property to make.So just, be enough to satisfy instructions for use.For guaranteeing the requirement of dispelling the heat, the present invention considers that simultaneously the row's of utilization powder water source vaporific current in parallel are specialized in the crankshaft cavity heat radiation in the course of the work.
In airtight bent axle cavity, because the reciprocating motion of the impactor 11 that connecting rod directly drives can make crankshaft cavity volume size change repeatedly.As seen from Figure 1, the capsule 7 that has adopted the nonmetal soft material of a special oil resistant heatproof to make among the present invention is realized compensation that cavity volume is changed.(simultaneously, the position of capsule 7 also is the residing position of pouring orifice.)
Change the lubricated of pricker part:
As seen from Figure 1, except lubricating in the bent axle cavity, between impactor 11 and unidirectional circle 15, promptly change the pricker part and also have lubrication problem.In the design, specially be provided with oil storage felt 13 and the oil filler point 22 from the front housing 18 between isolator 12 and the unidirectional circle 15 regularly to 13 oilings of oil storage felt.The effect of oil storage felt 13 has two, and the helical spline and the unidirectional circle 15 of first impact device 11 front ends are lubricated, and it two is to isolate aggregate chips water slurry that might pour in down a chimney in the front housing 18 and the spring chip that might damage.
In the electric rock drill project organization that emerges at present, the form of structure of crankshaft-link rod-piston spring obviously is better than the crankshaft-link rod-structure of piston of holding one's breath form on rock penetration performance.But there are several distinct issues in the form of structure of crankshaft-link rod-piston spring: first spring is placed in the impactor 11, because the constraint of diameter space makes spring work in abominable curling up than under the condition, causes the as easy as rolling off a log damage of spring.It two is because spring space of living in communicates with crankshaft cavity, and the spring chip that causes damaging can enter damage bent axle and bearing in the crankshaft rotating chamber.Three, connect by piston pin between piston and the impactor 11.Because of impacting the needs of drill steel 19, must design growth oval shape hole on the impactor, to guarantee that piston pin has enough displacement therein, but when impactor 11 is finished one-shot and is made return movement or drill steel and impacted the back reach and form the room, the momentary reset linear acceleration of spring substantially exceeds impact velocity, this makes that the rear portion of long waist circular port produces great impact on the piston pin impact device 11, and impactor 11 is relative weak owing to be subjected to the restriction of space and weight at the wall thickness at this position.Therefore, under the great impact effect of piston pin, the corresponding site of impactor 11 very easily breaks.
In order to solve above-mentioned three problems, the present invention has done design targetedly as seen from Figure 1.
Remove piston and spring, straight pin 25 directly couples together connecting rod and impactor 11, several advantages are arranged like this: the first is owing to remove piston, then the diameter of impactor 11 can correspondingly diminish, they are two years old, owing to do not have piston, inject the groove of connecting rod when being connected with straight pin 25 on the impactor 11 and can do growth oval shape with connecting rod.It is can corresponding increase many and improve intensity greatly then to sell the impactor 11 position wall thickness at two ends.Its three, do not had relative motion between hole on the impactor 11 at this moment and the straight pin 25, that is to say that straight pin 25 linear acceleration therein is practically negligible.The impact in 25 pairs of holes of straight pin also just is bordering on zero like this.Can protect the important part of this relative complex---impactor 11 in the hammer drill completely.
Yet, in the rock drill design of the disposable power conversion of this crankshaft-link rod, must have this spring or the member of holding one's breath to realize the operate as normal of bent axle member.As seen from Figure 1, a kind of impact block assembly 16 (see figure 2)s have been designed among the present invention in the commentaries on classics pricker device 17 of mmi machine shell 18.Adopt the low-angle tapering to be connected to guarantee it solid and reliable between impact block assembly 16 and the impactor 11.
As seen from Figure 2, impact block assembly 16 is made up of module tail 26, connecting rod 27, interior coil spring 28, cycle spring 29, connection-core 30 and module bump 31.The advantage of this design is among the present invention:
One, whole impact block assembly 16 are placed in the front housing 18, and maintenance changes convenient reliable.But both can change also integral replacing impact block assembly 16 of spring separately.
Two, owing to made full use of the inner diameter volume of spring.In identical diameter space, the diameter of spring can do more a bit and to curl up and compare parameter to improve it.Thereby raising spring life.
Three, among the present invention, revolve the dual spring form about 16 employings of impact block assembly are inside and outside.So not only further improve curling up of spring and compared parameter.Guaranteed the rigidity of spring simultaneously, this is very favourable beyond doubt to the raising speed of punchinging.
Four, use the outer dual spring of left and right sides medial rotation respectively, two spring mutually noninterferes have not only been guaranteed, with regard to whole aircraft reliability, realized " redundancy " design concept, promptly when one of them spring damages, another spring still can " be adhered to " work, repairs or replaces under the situation of not damaging other parts guaranteeing.The mean time between failures of machine is prolonged greatly, and reliability is greatly improved.
Five, because whole impact block assembly is isolated in the front housing fully, therefore, even two springs are broken fully, its chip can not enter the part that crankshaft cavity damages bent axle and bearing and impactor 11 these outbalances yet.
Six, as seen from Figure 2, connecting rod 27 is to adopt big slightly tapering to be connected to guarantee to try to shirk responsibility conveniently with connection-core 30, can reduce the impact noise that returns when playing simultaneously, has just reduced the noise of complete machine.Employing smaller angle tapering is connected between module bump 31 and the connection-core 30, to guarantee its firm and reliable connection.
As everyone knows, which kind of hammer drill all need use supporting leg to support when work, and hammer drill supporting leg in the past all is the Support Position of fixed position or direction.This supporting way usually can not satisfy the user in the tunnel during operation, in the requirement of punchinging near near the nearly wall four the limit walls in upper and lower, left and right.The present invention has done a kind of special design.Promptly on middle casing 9, be designed to the shape of the strong point 21 among Fig. 1.Do the corresponding design that connects then on the top of supporting leg.Like this, hammer drill can arbitrarily rotate in the supporting leg top according to the environmental requirement of mining operations face on 360 ° of direction positions.This design of the present utility model, in the time of can guaranteeing in the cutter upper and lower, left and right arbitrarily near cinclides, the nearly span in center, hole is from not surpassing 70～80mm.
The shape of this strong point 21 can be designed to " worker " shape among Fig. 1, also can be designed to flute profile or any other convenient shape of installing.
Claims (7)
1. improved electric hammer drill, motor by reduction gearing be connected to crankshaft-link rod assembly, impactor in middle casing, front end has isolator, unidirectional circle, commentaries on classics pricker device, drill steel, pricker deck, pricker card are arranged in the front housing, it is characterized in that: described motor (1) and the coaxial setting of bent axle, and be connected to crankshaft-link rod assembly (8) by reduction gearing, with the interior mutually engagement of described motor (1) output shaft pinion (4) that is connected and the gear wheel that is connected with bent axle (5), become train of reduction gears.
2. electric hammer drill according to claim 1, it is characterized in that: the crankshaft cavity at described crankshaft-link rod assembly (8) place is one to prestore the airtight cavity of lubrication oil in it, is provided with a capsule of being made by nonmetal soft material (7) on the crankshaft cavity housing.
3. electric hammer drill according to claim 1, it is characterized in that: be provided with impact block assembly (16) in described front housing (18) and commentaries on classics pricker device (17), impact block assembly (16) is made up of module tail (26), connecting rod (27), interior coil spring (28), cycle spring (29), connection-core (30) and module bump head (31).
4. electric hammer drill according to claim 1 is characterized in that: described impactor (11) directly is connected with crankshaft-link rod by straight pin (25).
5. electric hammer drill according to claim 1 is characterized in that: be provided with oil storage felt (13) between described isolator (12) and unidirectional circle (15).
6. electric hammer drill according to claim 1 is characterized in that: the supporting leg strong point (21) that " worker " font or flute profile are set outside the casing in described (9).
7. electric hammer drill according to claim 3, it is characterized in that: in described impact block assembly (16), establish interior coil spring (28) and cycle spring (29), revolve the dual spring form about being, module bump head (31) part places among the interior coil spring (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200670751U CN201236621Y (en) | 2008-05-12 | 2008-05-12 | Improved novel electric driven rock drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200670751U CN201236621Y (en) | 2008-05-12 | 2008-05-12 | Improved novel electric driven rock drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201236621Y true CN201236621Y (en) | 2009-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200670751U Expired - Fee Related CN201236621Y (en) | 2008-05-12 | 2008-05-12 | Improved novel electric driven rock drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201236621Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110093468A (en) * | 2019-06-11 | 2019-08-06 | 中钢集团西安重机有限公司 | A kind of rock drill testing device for blast furnace open hole machine |
| CN110159182A (en) * | 2017-12-29 | 2019-08-23 | 郑州赫恩电子信息技术有限公司 | A kind of horizontal rock drilling device |
-
2008
- 2008-05-12 CN CNU2008200670751U patent/CN201236621Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159182A (en) * | 2017-12-29 | 2019-08-23 | 郑州赫恩电子信息技术有限公司 | A kind of horizontal rock drilling device |
| CN110093468A (en) * | 2019-06-11 | 2019-08-06 | 中钢集团西安重机有限公司 | A kind of rock drill testing device for blast furnace open hole machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20090513 Termination date: 20130512 |