A kind of drill steel based on hydraulic valve control triggers quartering hammer
Art
The invention belongs to quartering hammer technical field, more particularly to a kind of drill steel based on hydraulic valve control to trigger quartering hammer.
Background technology
Quartering hammer has hydraulic-driven, nitrogen driving, nitrogen and hydraulic hybrid driving and a variety of drives such as weight-driven at present
Flowing mode, each type of drive are to go to reach by way of high-speed impact drill steel reaches and allows drill steel moment to have very big kinetic energy
To the effect of broken object;After drill steel is hit, huge kinetic energy is discharged by broken object, but drill steel exists
Separated often with object in work, and in now beaing and still carrying out, it is huge to beat kinetic energy and discharge, it is empty for a long time to beat general
Very big damage is caused to drill steel, causes equipment operating cost to improve.
A kind of drill steel triggering quartering hammer based on hydraulic valve control of present invention design solves as above problem.
The content of the invention
To solve drawbacks described above of the prior art, it is broken that the present invention discloses a kind of drill steel triggering based on hydraulic valve control
Hammer, it is realized using following technical scheme.
A kind of drill steel based on hydraulic valve control triggers quartering hammer, it is characterised in that:It includes drill steel, drill steel set, first
Drill steel spring supporting, drill steel spring, the second drill steel spring supporting, drill steel guide block, drill steel set slide opening, spring catch, the first impact hammer
Spring supporting, impact hammer chute, drive rod, driving rod guide, drive rod limiting plate, impact hammer, impact hammer spring catch, second are hit
Hammer spring supporting, drive rod limited block, impact hammer protection spring, drive rod guide groove, drive rod stopper slot, hydraulic pump, song
Handle fixed structure, crank spring, rocking bar rotating shaft, revolute, crank, crank block, sliding block spacing ring, the first outer panel, second
Outer panel, side plate reinforcement, the reciprocal spring of impact hammer, hydraulic control valve, side plate connecting plate, rocking bar, wherein the first outer panel with
Second outer panel is symmetrically mounted at together by several side plate reinforcements, is also pacified between the first outer panel and the second outer panel
Equipped with side plate connecting plate, the first outer panel and the second outer panel constitute the shell of quartering hammer.Hydraulic pump is arranged on the second outside
On the outside of plate, hydraulic pump rotating shaft passes through the second outer panel.
Crank fixed structure is arranged in hydraulic pump rotating shaft, and crank one end is arranged on crank fixed structure, other end peace
Equipped with sliding block spacing ring, crank block is slided on crank;Crank spring is placed on crank, and one end is arranged on crank fixed knot
On structure, the other end is arranged on crank block;Rocking bar rotating shaft is arranged on crank block, and rocking bar one end is arranged on rocking bar rotating shaft
On, the other end is arranged in revolute.
The position of rocking bar and crank is coordinated by crank block and crank spring in the present invention, and the purpose of design exists
In:In crank surrounds hydraulic pump rotating shaft rotary course, when in crank, straight up, rocking bar is under impact hammer weight, rocking bar band
Dynamic crank block slides into crank root, and this opening position crank spring is equal to the gravity of impact hammer by compressing to obtain elastic force, in song
When being rotated down straight up, impact hammer moves downward rapidly handle under self gravitation and crank spring double acting, right
Drill steel hits;Crank block and crank spring, which coordinate, to be played a part of storage energy and releases energy.
Drive rod top is arranged on revolute bottom, and two driving rod guides are symmetrically mounted on the downside of drive rod, driving
Bar limited block is symmetrically mounted on the downside of drive rod, and the plane of symmetry of two drive rod limited blocks and two driving rod guides are symmetrical
Face is vertical;Impact hammer upper surface is provided with circular hole, and two drive rod guide grooves and two drive rod limits are symmetrically provided with circular hole
Position groove, and the plane of symmetry of two drive rod guide grooves and the plane of symmetry of two drive rod stopper slots are vertical;Install drive rod bottom
In impact hammer circular hole, and rod guide is driven to coordinate with drive rod guide groove, drive rod limited block coordinates with drive rod stopper slot;
Drive rod limiting plate is arranged on impact hammer top, has the notch being engaged with driving rod guide on drive rod limiting plate;Two
Second impact hammer spring supporting is symmetrically mounted on the upside of impact hammer, and impact hammer is provided with each second impact hammer spring supporting
Spring catch;Impact hammer protection spring is arranged in impact hammer circular hole, and one end is connected with drive rod bottom, the other end and impact hammer
Circular hole bottom connects.
It can be mutually shifted between drive rod and impact hammer in the present invention, and add impact hammer protection spring.It is made
With for:The mutual alignment covered according to object to be broken and drill steel, drill steel is different from the mutual alignment that drill steel covers, and is being hit every time
When hitting, impact hammer has certain amplitude with drill steel impingement position;If when impact hammer moves with rocking bar, in crank also not
When moving to straight down, impact hammer is hit with drill steel, and impact hammer is moved downward and limited in this case, but now crank
Still rotated to position straight down, increased impact hammer protection spring now shrinks, and offsets impact hammer motion prevention and crank
Continue the conflicting of motion.Crank spring also plays the role of similar.
Impact hammer is arranged in drill steel set, and drill steel set upside symmetrically has two impact hammer chutes, two second shocks
Hammer spring supporting is slidably matched respectively with two impact hammer chutes, and two the first impact hammer spring supportings are symmetrically mounted at drill steel
Set upside;Two the first impact hammer spring supportings and two the second impact hammer spring supportings correspond to two-by-two respectively, right at each
Ying Zhong, the reciprocal spring one end of impact hammer are arranged on the second impact hammer spring supporting by impact hammer spring catch, and the other end passes through
Impact hammer spring catch is arranged on the first impact hammer spring supporting;Position on the lower side is provided with drill steel set slide opening in drill steel set and insertion is whole
Individual drill steel set, two the first drill steel spring supportings symmetrically put installed in drill steel and on the upside of drill steel set slide openings, and two
Individual drill steel guide block symmetrically is arranged among drill steel, and a second drill steel spring branch is separately installed with two drill steel guide blocks
Support, drill steel are arranged on drill steel set inside, and drill steel guide block coordinates with drill steel set slide opening;Drill steel spring one end is arranged on by spring catch
On first drill steel spring supporting, the other end is arranged on the second drill steel spring supporting by spring catch, and pricker is provided with guide block
Bar spring, when drill steel back and forth beats work, play a part of resetting drill steel;The reciprocal spring of impact hammer impact hammer each time with
Play a part of energy regenerating and release in drill steel knockout process, and a shock-absorbing functions are produced to the vibrations of shock.Drill steel
Set is arranged between the first outer panel and the second outer panel;Hydraulic control valve is arranged at the drill steel set slide opening that drill steel is put.
Above-mentioned hydraulic control valve include driving sliding block, limited block, guide rail, the first supporting plate, amplitude valve body, the first valve block,
Hydraulic pressure hole, the second valve block, the 3rd valve block, the 4th valve block, the second supporting plate, driving chute, valve body chute, valve shell, the 3rd
Supporting plate, valve body spring, wherein the first supporting plate and the 3rd supporting plate are put installed in drill steel side by side up and down, the second supporting plate is erected
Directly it is arranged in the 3rd supporting plate;Valve shell is the housing that section is u-shaped, and its one end is arranged under first supporting plate one end
Side, the other end are arranged on the second supporting plate upper end, and the second valve block and the 4th valve block are sequentially arranged at valve shell U-type groove up and down
In, and the second valve block is located at valve shell centre position, the 4th valve block is located at valve shell lower end close to lower surface;Two guide rails
It is separately mounted on two open ends on valve shell;Amplitude valve body one side is provided with driving chute, and is slided with being provided with driving
Two valve body chutes are symmetrically provided with the two neighboring face in face of groove;First valve block and the 3rd valve block are sequentially arranged at amplitude valve up and down
The one side of body unslotted, and the first valve block upper surface is alignd with amplitude valve body upper surface, the 3rd valve block lower surface range-amplitude display valve
The distance of body lower surface is more than the length of the 3rd valve block;Valve body chute is slidably matched with guide rail;Driving sliding block is arranged on the second pricker
On bar spring supporting, and slided in chute is driven, limited block is arranged on driving chute lower middle position;Valve body spring one end
Installed in amplitude valve body lower end face, the other end is arranged on the upside of the 3rd supporting plate.First valve block lower surface and the second valve block upper end
Face forms the first hydraulic pressure cavity, and the 3rd valve block and the 4th valve form the second hydraulic pressure cavity soon;Amplitude valve body in valve shell on
During lower slider, when the first valve block is in contact with the first supporting plate, the first hydraulic pressure cavity and the second hydraulic pressure cavity now
Two hydraulic pressure holes are respectively provided with side wall and are distributed in the second valve block both sides two-by-two.
Connected between above-mentioned hydraulic control valve and hydraulic pump by hydraulic tube.
As the further improvement of this technology, above-mentioned drill steel guide block is arranged on drill steel by welding manner.
As the further improvement of this technology, arbitrarily in two hydraulic pressure of the second valve block side in aforementioned four hydraulic pressure hole
Hole, one is hydraulic oil inlet, and another is hydraulic oil outlet.
As the further improvement of this technology, above-mentioned revolute includes journal stirrup, straight pin, contiguous block, two of which journal stirrup
It is arranged on side by side on contiguous block, straight pin is arranged on journal stirrup, and contiguous block is arranged on drive rod top, and rocking bar is arranged on straight pin
On.
As the further improvement of this technology, mounting hole is also provided with above-mentioned first outer panel and the second outer panel.
Relative to traditional quartering hammer technology, drill steel covers being slidably matched for slide opening by drill steel guide block and drill steel in the present invention
Inside is covered installed in drill steel, drill steel spring is installed on guide block, when drill steel back and forth beats work, plays the work for resetting drill steel
With;Impact hammer under hydraulic pump drive, is done to drill steel and periodically hit, and then drill steel is entered object by crank and rocker mechanism
Row is broken.In mechanism design, the hydraulic control valve controlled by drill steel is added, and then controls the folding of hydraulic pump, so
Design beneficial effect be only after drill steel applies certain power to object, drill steel inside contracts and can just open oil circuit and start knocking machine
Structure, as long as drill steel leaves object, beat mechanism and stop beaing immediately, it is therefore prevented that drill steel sky occurs and beats phenomenon, improves drill steel
Service life.
For the hydraulic control valve of drill steel control, pass through the first supporting plate, the second supporting plate and the 3rd on drill steel set
Fagging is provided with valve shell, and amplitude valve body is provided with valve shell, valve is provided between amplitude valve body and the 3rd supporting plate
Body spring, valve body spring are compression spring, and amplitude valve body is by the cooperation of guide rail and valve body chute in the U-type groove of valve shell
Slide, because valve body spring has a very big pretightning force, the limited block on amplitude valve body and can drive with driving shoe contact
When movable slider moves up, limited block still can be under valve body spring effect, as driving sliding block moves up, until valve body spring
Pretightning force can not ensure limited block and the driving shoe contact moved up.The specific embodiment of the invention is as follows:Broken
When not in use, drill steel is under the upwards thrust effect of self gravitation, drill steel spring and limited block, in the raw for hammer;Simultaneously
Amplitude valve body is upwarded pressure by valve body spring, self gravitation and driving sliding block downward pressure in the presence of keep certain position
Put, and now, the mutual alignment of amplitude valve body and valve shell is closed the hydraulic pressure hole in two hydraulic cavities;When
When quartering hammer works, drill steel contacts with object, after the mechanism for installing quartering hammer applies certain force between drill steel and object, drill steel
The inside retraction a certain distance can be covered to drill steel, while drives driving sliding block to move up, because valve body spring effect amplitude valve
Body and limited block move up with driving sliding block, after drill steel inside contracts certain distance, the hydraulic pressure hole in amplitude valve body and valve shell
Open, the fluid pressure line for beaing the hydraulic pump in mechanism of quartering hammer is opened, and impact hammer is started working and beats drill steel.Work as drill steel
After the completion of beaing task, after drill steel lifts in the mechanism by installing quartering hammer, drill steel is protruding under drill steel spring effect,
Nature is returned to, while drives sliding block to press against limited block slide downward under the restitution of drill steel spring, drive simultaneously
Amplitude valve body slide downward in valve shell, by hydraulic pressure bore closure, hydraulic pump oil-break, beat mechanism and be stopped.
Brief description of the drawings
Fig. 1 is drill steel and drill steel set scheme of installation.
Fig. 2 is drill steel nested structure schematic diagram.
Fig. 3 is Rod structure schematic diagram.
Fig. 4 is drive rod and impact hammer scheme of installation.
Fig. 5 is drive rod structural representation.
Fig. 6 is impact hammer structure sectional view.
Fig. 7 is crank rocker scheme of installation.
Fig. 8 is crank block scheme of installation.
Fig. 9 is crank block slider structure schematic diagram.
Figure 10 is quartering hammer overall structure diagram.
Figure 11 is quartering hammer internal structure schematic diagram.
Figure 12 is broken drive mechanism schematic diagram.
Figure 13 is hydraulic control valve scheme of installation.
Figure 14 is hydraulic control valve structural representation.
Figure 15 is hydraulic control valve side view.
Figure 16 is amplitude valve body structure schematic diagram.
Figure 17 is valve shell structural representation.
Figure 18 is valve body spring scheme of installation.
Label title in figure:1st, sliding block is driven, 2, limited block, 3, guide rail, the 4, first supporting plate, 5, amplitude valve body, 6, the
One valve block, 7, hydraulic pressure hole, the 8, first hydraulic pressure cavity, the 9, second valve block, the 10, the 3rd valve block, the 11, second hydraulic pressure cavity, the 12, the 4th
Valve block, the 13, second supporting plate, 14, driving chute, 15, valve body chute, 16, valve shell, the 17, the 3rd supporting plate, 18, valve body
Spring, 21, drill steel, 22, drill steel set, the 23, first drill steel spring supporting, 24, drill steel spring, the 25, second drill steel spring supporting,
26th, drill steel guide block, 27, drill steel set slide opening, 28, spring catch, the 30, first impact hammer spring supporting, 31, impact hammer chute, 32, branch
Ear, 33, straight pin, 34, contiguous block, 35, drive rod, 36, driving rod guide, 37, drive rod limiting plate, 38, impact hammer, 39,
Impact hammer spring catch, the 40, second impact hammer spring supporting, 41, drive rod limited block, 42, impact hammer protection spring, 43, driving
Rod guide groove, 44, drive rod stopper slot, 45, hydraulic pump, 46, crank fixed structure, 47, crank spring, 48, rocking bar rotating shaft,
49th, revolute, 50, crank, 51, crank block, 52, sliding block spacing ring, the 53, first outer panel, outside 54, mounting hole, 55, second
Side plate, 56, side plate reinforcement, 57, the reciprocal spring of impact hammer, 58, hydraulic control valve, 59, side plate connecting plate, 60, rocking bar.
Embodiment
As shown in Figure 10,11, it includes drill steel, drill steel set, the first drill steel spring supporting, drill steel spring, the second drill steel bullet
Spring support, drill steel guide block, drill steel set slide opening, spring catch, the first impact hammer spring supporting, impact hammer chute, drive rod, drive rod
Guide rail, drive rod limiting plate, impact hammer, impact hammer spring catch, the second impact hammer spring supporting, drive rod limited block, impact hammer
Protect spring, drive rod guide groove, drive rod stopper slot, hydraulic pump, crank fixed structure, crank spring, rocking bar rotating shaft, rotation
Pair, crank, crank block, sliding block spacing ring, the first outer panel, the second outer panel, side plate reinforcement, the reciprocal spring of impact hammer,
Hydraulic control valve, side plate connecting plate, rocking bar, wherein as shown in Figure 10, the first outer panel and the second outer panel pass through several side plates
Reinforcement is symmetrically mounted at together, as shown in figure 11, side plate company is also equipped between the first outer panel and the second outer panel
Fishplate bar, the first outer panel and the second outer panel constitute the shell of quartering hammer.As shown in figure 11, hydraulic pump is arranged on the second outside
On the outside of plate, hydraulic pump rotating shaft passes through the second outer panel.
As shown in figure 12, crank fixed structure is arranged in hydraulic pump rotating shaft, as shown in figure 8, crank one end is arranged on song
On handle fixed structure, the other end is provided with sliding block spacing ring, and crank block is slided on crank;Crank spring is placed on crank,
And one end is arranged on crank fixed structure, the other end is arranged on crank block;As shown in Figure 8,9, rocking bar rotating shaft is arranged on
On crank block, as shown in fig. 7, rocking bar one end is arranged in rocking bar rotating shaft, the other end is arranged in revolute.
The position of rocking bar and crank is coordinated by crank block and crank spring in the present invention, and the purpose of design exists
In:In crank surrounds hydraulic pump rotating shaft rotary course, when in crank, straight up, rocking bar is under impact hammer weight, rocking bar band
Dynamic crank block slides into crank root, and this opening position crank spring is equal to the gravity of impact hammer by compressing to obtain elastic force, in song
When being rotated down straight up, impact hammer moves downward rapidly handle under self gravitation and crank spring double acting, right
Drill steel hits;Crank block and crank spring, which coordinate, to be played a part of storage energy and releases energy.
As shown in Figure 4,5, drive rod top is arranged on revolute bottom, and two driving rod guides are symmetrically mounted at driving
On the downside of bar, drive rod limited block is symmetrically mounted on the downside of drive rod, and the plane of symmetry of two drive rod limited blocks drives with two
The lever guide rail plane of symmetry is vertical;As shown in fig. 6, impact hammer upper surface is provided with circular hole, two drivings are symmetrically provided with circular hole
Rod guide groove and two drive rod stopper slots, and the plane of symmetry of two drive rod guide grooves and two drive rod stopper slots is symmetrical
Face is vertical;Drive rod bottom is arranged in impact hammer circular hole, and drives rod guide to coordinate with drive rod guide groove, and drive rod is spacing
Block coordinates with drive rod stopper slot;Drive rod limiting plate is arranged on impact hammer top, has on drive rod limiting plate and drive rod
The notch that guide rail is engaged;Two the second impact hammer spring supportings are symmetrically mounted on the upside of impact hammer, each second impact hammer
Impact hammer spring catch is installed on spring supporting;Impact hammer protection spring is arranged in impact hammer circular hole, and one end and drive rod
Bottom is connected, and the other end is connected with impact hammer circular hole bottom.
It can be mutually shifted between drive rod and impact hammer in the present invention, and add impact hammer protection spring.It is made
With for:The mutual alignment covered according to object to be broken and drill steel, drill steel is different from the mutual alignment that drill steel covers, and is being hit every time
When hitting, impact hammer has certain amplitude with drill steel impingement position;If when impact hammer moves with rocking bar, in crank also not
When moving to straight down, impact hammer is hit with drill steel, and impact hammer is moved downward and limited in this case, but now crank
Still rotated to position straight down, increased impact hammer protection spring now shrinks, and offsets impact hammer motion prevention and crank
Continue the conflicting of motion.Crank spring also plays the role of similar.
As shown in figure 1, impact hammer is arranged in drill steel set, as shown in Fig. 2 drill steel set upside symmetrically has two shocks
Hammer chute into shape, two the second impact hammer spring supportings are slidably matched respectively with two impact hammer chutes, two the first impact hammer springs
Support is symmetrically mounted at drill steel set upside;Two the first impact hammer spring supportings and two the second impact hammer spring supporting difference
Correspond to two-by-two, in each is corresponding, the reciprocal spring one end of impact hammer is arranged on the second impact hammer bullet by impact hammer spring catch
In spring support, the other end is arranged on the first impact hammer spring supporting by impact hammer spring catch;As shown in Fig. 2 in drill steel set
Position on the lower side is provided with drill steel set slide opening and the whole drill steel set of insertion, two the first drill steel spring supportings symmetrically are arranged on pricker
In rod set and on the upside of drill steel set slide opening, two drill steel guide blocks symmetrically are arranged among drill steel, as shown in figure 3, two
A second drill steel spring supporting is separately installed with individual drill steel guide block, drill steel is arranged on drill steel set inside, drill steel guide block and pricker
Rod set slide opening coordinates;Drill steel spring one end is arranged on the first drill steel spring supporting by spring catch, and the other end passes through spring catch
On the second drill steel spring supporting, drill steel spring is installed on guide block, when drill steel back and forth beats work, plays reset
The effect of drill steel;The reciprocal spring of impact hammer plays energy regenerating and the work of release in impact hammer each time and drill steel knockout process
With, and a shock-absorbing functions are produced to the vibrations of shock.Drill steel set is arranged between the first outer panel and the second outer panel;Such as
Shown in Figure 13, hydraulic control valve is arranged at the drill steel set slide opening that drill steel is put.
As shown in Figure 13,14, above-mentioned hydraulic control valve includes driving sliding block, limited block, guide rail, the first supporting plate, amplitude
Valve body, the first valve block, hydraulic pressure hole, the second valve block, the 3rd valve block, the 4th valve block, the second supporting plate, driving chute, valve body chute,
Valve shell, the 3rd supporting plate, valve body spring, wherein as shown in figure 13, the first supporting plate and the 3rd supporting plate are pacified side by side up and down
Put mounted in drill steel, the second supporting plate is vertically installed in the 3rd supporting plate;As shown in figure 17, valve shell is that section is u-shaped
Housing, its one end is arranged on the downside of first supporting plate one end, and the other end is arranged on the second supporting plate upper end, the second valve block with
4th valve block is sequentially arranged in valve shell U-type groove up and down, and the second valve block is located at valve shell centre position, the 4th valve block
Positioned at valve shell lower end close to lower surface;Two guide rails are separately mounted on two open ends on valve shell;Such as figure
Shown in 16, amplitude valve body one side is provided with driving chute, and is symmetrically provided with two on the two neighboring face in face of driving chute with being provided with
Valve body chute;First valve block and the 3rd valve block are sequentially arranged at the one side of amplitude valve body unslotted, and the first valve block upper end up and down
Face is alignd with amplitude valve body upper surface, and the distance in the 3rd valve block lower surface range-amplitude display valve body lower end face is more than the length of the 3rd valve block
Degree;As shown in Figure 14,15, valve body chute is slidably matched with guide rail;Sliding block is driven to be arranged on the second drill steel spring supporting, and
Slided in driving chute, limited block is arranged on driving chute lower middle position;Valve body spring one end is arranged under amplitude valve body
End face, the other end are arranged on the upside of the 3rd supporting plate.First valve block lower surface forms the first hydraulic pressure with the second valve block upper surface and led to
Chamber, the 3rd valve block and the 4th valve form the second hydraulic pressure cavity soon;During amplitude valve body slides up and down in valve shell, when
When one valve block is in contact with the first supporting plate, two liquid are respectively provided with the first hydraulic pressure cavity now and the second hydraulic pressure cavity side wall
Press hole and be distributed in the second valve block both sides two-by-two.
Connected between above-mentioned hydraulic control valve and hydraulic pump by hydraulic tube.
Above-mentioned drill steel guide block is arranged on drill steel by welding manner.
Arbitrarily in two hydraulic pressure holes of the second valve block side in aforementioned four hydraulic pressure hole, one is hydraulic oil inlet, another
Individual is hydraulic oil outlet.
As shown in figure 4, above-mentioned revolute includes journal stirrup, straight pin, contiguous block, two of which journal stirrup is arranged on connection side by side
On block, straight pin is arranged on journal stirrup, and contiguous block is arranged on drive rod top, and rocking bar is arranged on straight pin.
As shown in Figure 10, also it is provided with mounting hole on above-mentioned first outer panel and the second outer panel.
In summary, drill steel covers being slidably installed in drill steel set of slide opening by drill steel guide block and drill steel in the present invention
Portion, drill steel spring is installed on guide block, when drill steel back and forth beats work, plays a part of resetting drill steel;Impact hammer passes through
Crank and rocker mechanism does to drill steel and periodically hit, and then drill steel is crushed object under hydraulic pump drive.In mechanism
In design, the hydraulic control valve controlled by drill steel is added, and then control the folding of hydraulic pump, such design beneficial effect
That drill steel, which inside contracts just open oil circuit and start, beats mechanism only after drill steel applies certain power to object, if drill steel from
Object is opened, mechanism is beaten and stops beaing immediately, it is therefore prevented that drill steel sky occurs and beats phenomenon, improves the service life of drill steel.
For the hydraulic control valve of drill steel control, pass through the first supporting plate, the second supporting plate and the 3rd on drill steel set
Fagging is provided with valve shell, and amplitude valve body is provided with valve shell, valve is provided between amplitude valve body and the 3rd supporting plate
Body spring, valve body spring are compression spring, and amplitude valve body is by the cooperation of guide rail and valve body chute in the U-type groove of valve shell
Slide, because valve body spring has a very big pretightning force, the limited block on amplitude valve body and can drive with driving shoe contact
When movable slider moves up, limited block still can be under valve body spring effect, as driving sliding block moves up, until valve body spring
Pretightning force can not ensure limited block and the driving shoe contact moved up.The specific embodiment of the invention is as follows:Broken
When not in use, drill steel is under the upwards thrust effect of self gravitation, drill steel spring and limited block, in the raw for hammer;Simultaneously
Amplitude valve body is upwarded pressure by valve body spring, self gravitation and driving sliding block downward pressure in the presence of keep certain position
Put, and now, the mutual alignment of amplitude valve body and valve shell is closed the hydraulic pressure hole in two hydraulic cavities;When
When quartering hammer works, drill steel contacts with object, after the mechanism for installing quartering hammer applies certain force between drill steel and object, drill steel
The inside retraction a certain distance can be covered to drill steel, while drives driving sliding block to move up, because valve body spring effect amplitude valve
Body and limited block move up with driving sliding block, after drill steel inside contracts certain distance, the hydraulic pressure hole in amplitude valve body and valve shell
Open, the fluid pressure line for beaing the hydraulic pump in mechanism of quartering hammer is opened, and impact hammer is started working and beats drill steel.Work as drill steel
After the completion of beaing task, after drill steel lifts in the mechanism by installing quartering hammer, drill steel is protruding under drill steel spring effect,
Nature is returned to, while drives sliding block to press against limited block slide downward under the restitution of drill steel spring, drive simultaneously
Amplitude valve body slide downward in valve shell, by hydraulic pressure bore closure, hydraulic pump oil-break, beat mechanism and be stopped.