CN107234596A - Valveless booster-type pneumatic spade and its gas handling system - Google Patents
Valveless booster-type pneumatic spade and its gas handling system Download PDFInfo
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- CN107234596A CN107234596A CN201710635900.7A CN201710635900A CN107234596A CN 107234596 A CN107234596 A CN 107234596A CN 201710635900 A CN201710635900 A CN 201710635900A CN 107234596 A CN107234596 A CN 107234596A
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- 239000007789 gas Substances 0.000 claims abstract description 73
- 239000002243 precursor Substances 0.000 claims abstract description 44
- 241000251133 Sphyrna tiburo Species 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 230000015572 biosynthetic process Effects 0.000 claims abstract 2
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 238000009434 installation Methods 0.000 claims description 21
- 230000035939 shock Effects 0.000 claims description 5
- 238000009827 uniform distribution Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 238000004880 explosion Methods 0.000 claims description 3
- 229910001095 light aluminium alloy Inorganic materials 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 9
- 239000000126 substance Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 238000009313 farming Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
- B25D9/06—Means for driving the impulse member
- B25D9/08—Means for driving the impulse member comprising a built-in air compressor, i.e. the tool being driven by air pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/04—Handles; Handle mountings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
- B25D9/04—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously of the hammer piston type, i.e. in which the tool bit or anvil is hit by an impulse member
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
The invention discloses a kind of valveless booster-type pneumatic spade and its gas handling system, it is related to a kind of pneumatic tool, its structure includes handle, connecting tube, cylinder body, precursor, shovel head and hammer body etc., the air inlet seat that sealing is installed also is had additional on cylinder body top, and gas handling system includes the inlet channel in handle, inlet chamber in connecting tube, air admission hole in air inlet seat, cylinder body air flue in cylinder body, epicoele and cavity of resorption, outlet blind hole and venthole in hammer body, and outlet chamber and steam vent in precursor, when pneumatic spade inputs gases at high pressure, it can just be circulated according to above-mentioned gas handling system, and then promote hammer body formation axial reciprocating movement using the principle of gas boosting, so as to the work of constant impingement shovel head, by improving above-mentioned pneumatic spade structure and its gas handling system, make it have lightweight, it is simple in construction, compact, good appearance, rapid operation, air consumption is few, the big grade of impact energy uses advantage, also it can be prevented effectively from and the phenomenon that hammer body sky hits and broken occur.
Description
Technical field
The present invention relates to a kind of pneumatic spade and its gas handling system, valveless booster-type pneumatic spade and its gas handling system are specifically referred to.
Background technology
Pneumatic spade is a kind of gases at high pressure using input to promote hammer body to move back and forth up and down, and then circulates shock shovel head simultaneously
The pneumatic tool being operated；Therefore, pneumatic spade front end can be equipped with various shovel heads, can be in gardens and farming operation in the mode of impacting
Cut the earth, dig tree, ditching；Can be carried out in fitment operation shovel wall, shovel etc. operation；Small area can be used as in municipal works
Concrete disintegrating, basis compacting and hole, perforate etc. and be used；Also it can be used for sand removal and the metal material surface of various casting
Shovel cut and recondition.At present, the structure of pneumatic spade and gas handling system design are extremely complex.Such as in structure, zero of pneumatic spade
Part composition is various, and main using cast iron manufacture, and profile is ugly, volume is heavy, operation is laborious；And in the design of gas handling system
On, although final purpose is provided to promote hammer body to move back and forth up and down to hit shovel head, but common pneumatic spade be all utilize into
The gases at high pressure entered push directly on hammer body movement, therefore need larger air consumption, and impact energy is also easily limited to enter high pressure
The intensity of pressure of gas, once the insufficient pressure of gases at high pressure, will influence in the impact energy on hammer body；Meanwhile, in order to
Also need to set a distributing valve on ventilation and gas circulation, pneumatic spade, this had both added the design difficulty of structure, also caused air inlet system
System is more complicated；In addition, traditional pneumatic spade structure shovel head when without shovel head or operation is stuck in working substance, now high pressure gas
Body is still in lasting input, and the sky that will result in hammer body is hit, then the empty hammer body hit will be impinged upon directly on precursor, so as to cause
Hammer body or precursor are impaired, and serious meeting scraps pneumatic spade.
The content of the invention
The technical problems to be solved by the invention are the defect for overcoming prior art and to provide a kind of lightweight, structure simple
List, compact, good appearance, rapid operation, air consumption are few, impact energy is big, can be prevented effectively from and hammer body sky occur and hit phenomenon
Valveless booster-type pneumatic spade and its gas handling system.
The technical problem of the present invention is achieved through the following technical solutions：
A kind of valveless booster-type pneumatic spade, including connecting tube, the handle installed in connecting tube top, the cylinder installed in connecting tube bottom
Body and the precursor installed in inferior part of the cylinder block；It is provided with described handle in inlet channel, connecting tube and is communicated with inlet channel
Inlet chamber；Hammer body is provided with described cylinder body and precursor, the hammer body top axial moves back and forth sealing and is inserted into cylinder body, precursor
Shovel head of the bottom provided with axially activity inserting, the air inlet seat that described cylinder body top is installed provided with sealing, the air inlet seat and hammer body
Epicoele is formed in cylinder body between upper end, cavity of resorption is formed between hammer body outer wall and inboard wall of cylinder block, is formed out between hammer body and precursor
Air cavity；The cylinder body air flue of cavity of resorption is communicated with described cylinder body, air inlet seat is provided with and is respectively communicated with inlet chamber and cylinder body air flue
Air admission hole；The outlet blind hole of epicoele is communicated with described hammer body, hammer body side is communicated with the venthole of outlet blind hole,
The venthole is moved by the axial reciprocating of hammer body and connects outlet chamber or cavity of resorption；Described precursor side is provided with and is respectively communicated with outlet
The steam vent of chamber and ambient atmosphere.
Provided with the coupling sleeve interconnected between described connecting tube and cylinder body, described precursor upper end is directly threadedly coupled
In cylinder body lower end.
Described middle handle is connected T-shaped by connecting seat with connecting tube top seal；Described handle one end
It is communicated with the inlet suction port of inlet channel and opens and closes the air inlet switch of inlet suction port, the handle other end is provided with plug dress closing air inlet
The cap stopper of passage.
Described handle and connecting tube use light aluminum alloy, handle outer wrapping flexible boot；Described connecting seat is modeling
Expect seat.
Described air inlet seat top surface is arranged on the air admission hole of groove periphery, Mei Gejin provided with groove and 6 ~ 8 circumference uniform distributions
The link slot being connected is equipped between stomata and groove；The connection corresponding with air admission hole of described cylinder body air flue.
Be provided with described precursor axially through mounting hole, precursor side is communicated with the side opening of mounting hole, the side opening
It is interior to be provided with clamping steel ball；Described precursor bottom is provided with the installation set of movable set, and the installation set inwall is provided with convex portion and recess；
Described installation set moves up drive recess just to clamping steel ball, the clamping steel ball retraction side opening, and shovel head upper end is inserted into peace
Fill in hole or depart from out of mounting hole；Described installation set moves down drive convex portion pushing tow clamping steel ball, and the clamping steel ball is stretched
Go out side opening to be fitted in the annular groove of shovel head periphery；Described annular groove width have to be larger than side opening aperture, and clamping steel ball is existed
There are the stroke distances axially moved back and forth up and down in annular groove.
Spring of the described precursor bottom provided with suit, the downward pushing installation set of the spring, and then drive convex portion top
Push away clamping steel ball.
Described installation set lower end is provided with the stop bit jump ring being fixed on precursor.
A kind of gas handling system of valveless booster-type pneumatic spade, including inlet channel and inlet chamber, in addition to air admission hole, cylinder body gas
Road, epicoele, cavity of resorption, outlet blind hole, venthole, outlet chamber and steam vent；Input gases at high pressure, the height in described inlet channel
Body of calming the anger enters lower intracavitary, epicoele, outlet blind hole, venthole, outlet chamber and row through inlet chamber, air admission hole, cylinder body air flue successively
Stomata is connected, and hammer body is promoted by gases at high pressure and quickly moved up；The drive venthole that moves up of the hammer body enters
Enter in cylinder body and be closed, the lower intracavitary continues into gases at high pressure, epicoele and outlet blind hole and moves up production with hammer body
Raw vacuum compression, and form high pressure expanding gas；Described hammer body continues to move up the drive venthole connection cavity of resorption,
The cavity of resorption, venthole, outlet blind hole are connected with epicoele moment, and the gases at high pressure moment persistently inputted enters epicoele and outlet blind hole
It is interior and produce high pressure gas explosion, and then promote hammer body quickly to move down shock shovel head, complete the air inlet work for taking turns gas handling system.
Described hammer body is moved downward to lowest part, and cavity of resorption and inlet channel will be separated, and epicoele connects with inlet channel
Logical, then compressed gas drains into outlet chamber by outlet blind hole of the epicoele through hammer body and venthole, then is expelled directly out by steam vent.
Compared with prior art, the present invention mainly has additional the air inlet seat that sealing is installed on the cylinder body top of pneumatic spade, and
By forming epicoele in the cylinder body between air inlet seat and hammer body upper end, cavity of resorption, hammer body are formed between hammer body outer wall and inboard wall of cylinder block
Outlet chamber is formed between precursor；Meanwhile, be communicated with the cylinder body air flue of cavity of resorption in cylinder body, air inlet seat provided be respectively communicated with into
The outlet blind hole of epicoele is communicated with the air admission hole of air cavity and cylinder body air flue, hammer body, hammer body side is communicated with outlet blind hole
Venthole, the venthole can also be connected outlet chamber or cavity of resorption by the axial reciprocating movement of hammer body, and precursor side provided with connecting respectively
The steam vent of pass-out air cavity and ambient atmosphere；Therefore, air admission hole, cylinder body air flue, epicoele, cavity of resorption, outlet blind hole, venthole, go out
Air cavity, steam vent, and combination handle and inlet channel and inlet chamber in connecting tube together constitute the gas handling system of pneumatic spade, when
Pneumatic spade inputs gases at high pressure, can just be circulated according to above-mentioned gas handling system, and then promotes hammer body using the principle of gas boosting
Axial reciprocating movement is formed, so that constant impingement shovel head works, by improving above-mentioned pneumatic spade structure and its gas handling system, has it
Having that lightweight, simple in construction, compact, good appearance, rapid operation, air consumption are few, impact energy is big etc. uses advantage, also can
It is prevented effectively from and the phenomenon that hammer body sky hits and broken occurs.
Brief description of the drawings
Fig. 1 is cross section structure diagram of the invention.
Fig. 2 is air intake system structure schematic diagram of the invention.
Fig. 3 is the cross section structure diagram of air inlet seat.
Fig. 4 is Fig. 3 upward view.
Fig. 5 is Fig. 3 top view.
Fig. 6 is the cross section structure diagram of installation set.
Fig. 7 is the cross section structure diagram of precursor.
Fig. 8 is that hammer body prepares to move axially upwards the air intake structure schematic diagram for storing power.
Fig. 9 is the air intake structure schematic diagram that hammer body moves axially upwards the upper intracavity gas of compression.
Figure 10 connects for upper and lower chamber moment, and high pressure expanding gas prepare the air intake structure for promoting hammer body to move axially downwards
Schematic diagram.
Figure 11 is that hammer body hits shovel head, and the connection of upper and lower chamber is interrupted and hammer body is played air defense and hits and restart to store power
Air intake structure schematic diagram.
Embodiment
The embodiment of the present invention will again be elaborated by above-mentioned accompanying drawing below.
As shown in Fig. 1 ~ Figure 11,1. handles, 2. cap stoppers, 3. connecting tubes, 4. air inlet seats, 41. grooves, 42. link slots, 5. hammers
Body, 6. cylinder bodies, 7. precursors, 71. mounting holes, 72. side openings, 8. installation sets, 81. convex portions, 82. recesses, 9. shovel heads, 91. annular grooves,
10. stop bit jump ring, 11. clamping steel balls, 12. springs, 13. coupling sleeves, 14. connecting seats, 15. flexible boots, 16. inlet suction ports, 17.
Air inlet switch, 101. inlet channels, 102. apertures, 103. inlet chambers, 104. air admission holes, 105. cylinder body passages, 106. cavity of resorptions,
107. epicoele, 108. outlet blind holes, 109. ventholes, 110. outlet chambers, 111. steam vents.
Valveless booster-type pneumatic spade and its gas handling system, as shown in figure 1, being related to a kind of gases at high pressure using input passes through spy
The gas handling system very designed promotes the hammer body 5 to make axial reciprocating movement and then the pneumatic work that is operated of constant impingement shovel head 9
Tool, it can be equipped with various shovel heads 9 according to actual needs, and be used in the mode of impacting in gardens and farming operation to various
The excavation in soil, trench digging, dig kind of a sowing for greening, trees and some crops, or carry out in fitment operation shovel wall, shovel ground,
Glue unnecessary in fitment process, pitch etc. are scalped, or is used as the concrete disintegrating of small area, basis in municipal works and is rammed
In fact, slot, hole, perforating, or the sand removal of various casting, the shovel of metal material surface are cut and recondition.
Described pneumatic spade structure is mainly made up of the handle 1 being sequentially connected, connecting tube 3, cylinder body 6 and precursor 7 etc..
Wherein, handle 1 be a horizontal traverse and axially through hollow light weight tube and pipe of aluminium alloy, therefore in handle
An inlet channel 101 can be formed, the connecting seat 14 that the middle part of handle 1 is made up of engineering plastics is connected with the top of connecting tube 3 in " T "
The connecting place of font, the upper end of connecting tube 3 and connecting seat 14 is provided with sealing ring to form sealing structure；The described outer wrapping of handle 1
Flexible boot 15, gripping impact endurance test shock when can strengthen the gripping frictional force of operator and alleviate work；Described one end of handle 1,
Air inlet switch 17 of the left end provided with inlet suction port 16 and keying inlet suction port i.e. shown in Fig. 1, the connection air inlet of inlet suction port the inner
Passage 101, the external high-pressure air source in outer end is to input gases at high pressure；The other end of handle 1, i.e. right-hand member shown in Fig. 1 are fixed provided with plug dress
Cap stopper 2, available for closing inlet channel 101 to form it into closed cavity.
Described connecting tube 3 is a vertically disposed hollow light weight tube and pipe of aluminium alloy, therefore one is formed in connecting tube 3 and is entered
Air cavity 103, the inlet chamber top is connected by the aperture 102 on connecting seat 14 and handle 1 with inlet channel 101, to input
Gases at high pressure；Linked into an integrated entity between described connecting tube 3 and cylinder body 6 by coupling sleeve 13, and the direct screw thread in the upper end of precursor 7 connects
It is connected on the lower end of cylinder body 6；Make in described cylinder body 6 and precursor 7 axially through being provided with the upper end of cylinder body 6 and by sealing ring make close
Seal in the air inlet seat 4 installed, cylinder body 6 and precursor 7 and be provided with hammer body 5, the hammer body top axial moves back and forth sealing and is inserted into cylinder body 6
Interior, hammer body lower end is located in precursor 7；Therefore, epicoele 107 is just formed in the cylinder body 6 between air inlet seat 4 and the upper end of hammer body 5, and
Cavity of resorption 106 is formed between the outer wall of hammer body 5 and the inwall of cylinder body 6, outlet chamber 110, the side of precursor 7 are then formed between hammer body 5 and precursor 7
The steam vent 111 for being respectively communicated with outlet chamber 110 and ambient atmosphere is additionally provided with, the quantity of the steam vent is provided with 3, and circumference uniform distribution
It is arranged on the outer surface of precursor 7.
Meanwhile, the top surface of air inlet seat 4 is arranged on groove periphery provided with the groove 41 and 8 circumference uniform distributions as shown in Fig. 3 ~ Fig. 5
Air admission hole 104, the link slot 42 being connected, the setting quantity of air admission hole 104 are equipped between each air admission hole and groove 41
It can be designed according to the size of air inlet seat 4；The cylinder body air flue 105 of cavity of resorption 106 is communicated with described cylinder body 6, should
Cylinder body air flue is corresponding connection with the set location of air admission hole 104, therefore by multiple air admission holes 104 in air inlet seat 4 with regard to energy
It is respectively communicated with inlet chamber 103 and cylinder body air flue 105.
Extend the outlet blind hole 108 that opens up in addition, being provided with hammer body 5 along its axial line, the outlet blind hole is directly and epicoele
107 are connected, and the side of hammer body 5 is communicated with the venthole 109 of outlet blind hole 108, and the quantity of the venthole is provided with 3, and with
Circumference uniform distribution is arranged on the outer surface of hammer body 5 centered on outlet blind hole 108.
The described internal cause of precursor 7 is made axially through therefore forming mounting hole 71 as shown in Figure 7, then the upper end of shovel head 9 can be inserted
Enter in mounting hole 71 or depart from out of mounting hole 71, mounting hole is equipped using regular hexagon hole, to prevent the footpath of shovel head 9 after installing
To rotation, and a ring groove 91 is additionally provided with the upper end of shovel head 9；The described side of precursor 7 is communicated with the side of mounting hole 71
Clamping steel ball 11 is provided with hole 72, the side opening；Installation set 8 and spring 12 of the described bottom of precursor 7 provided with movable set, the peace
Encapsulation 8 as shown in fig. 6, its inwall be provided with convex portion 81 and recess 82, the spring 12 under normal conditions all the time elasticity downwards pushing installation
Set 8, and then the pushing tow clamping steel ball 11 of convex portion 81 of installation set is driven, and the lower end of installation set 8 is provided with the stop bit being fixed on precursor 7
Jump ring 10, to prevent from from the bottom of precursor 7 being departed from by the downward pushing tow of spring 12.
The installation process of shovel head 9 is as follows：First passing through external force drives installation set 8 to overcome the pushing tow elastic force of spring 12 to moving up
It is dynamic, and make recess 82 just to clamping steel ball 11, now clamping steel ball is with regard in energy retraction side opening 72, then the upper end of shovel head 9 can just be inserted
Enter in mounting hole 71, then discharge the external force in installation set 8, the pushing installation of spring 12 set 8 is moved down and pushed up by convex portion 81
Clamping steel ball 11 is pushed away, the clamping steel ball stretches out side opening 72 and is fitted in the annular groove 91 of the periphery of shovel head 9, and now shovel head 9 would not
Depart from from mounting hole 71.
The described width of annular groove 91 have to be larger than the aperture of side opening 72, and clamping steel ball 11 is had in annular groove 91 on axial direction
Under the stroke distances that move back and forth, then in the case where shovel head 9 is not departed from, hammer body 5 just can constant impingement shovel head 9 and produce it
High-frequency stretching motion, so as to reach work purpose.
And described from the structure of above-mentioned pneumatic spade, its gas handling system is mainly by inlet channel 101, inlet chamber 103, entered
Stomata 104, cylinder body air flue 105, epicoele 107, cavity of resorption 106, outlet blind hole 108, venthole 109, outlet chamber 110 and steam vent
111 are constituted, and the course of work is：
Gas handling system under normality is as shown in figure 8, hammer body 5 is located at lower end, and operator opens the air inlet switch on inlet suction port 16
17, then it will enter successively through inlet channel 101, inlet chamber 103, air admission hole 104, cylinder body air flue 105 after gases at high pressure input
In cavity of resorption 106, epicoele 107, outlet blind hole 108, venthole 109, outlet chamber 110 now are connected with steam vent 111, therefore hammer
Body 5 is promoted by gases at high pressure and just can quickly moved up.
Then as shown in figure 9, moving up for hammer body 5 will drive venthole 109 to enter to be closed in cylinder body 5, i.e. epicoele
107th, outlet blind hole 108 can not be communicated by venthole 109 with outlet chamber 110, steam vent 111, but cavity of resorption 106 now
Inside also continuing into gases at high pressure, therefore by moving up and produce with hammer body 5 in epicoele 107 and outlet blind hole 108
Vacuum compression, and form high pressure expanding gas.
Then hammer body 5 is also being continued to move up, and drives the connection cavity of resorption 106 as shown in Figure 10 of venthole 109, now
Cavity of resorption 106, venthole 109, outlet blind hole 108 will be connected moment with epicoele 107, then the gases at high pressure persistently inputted will enter moment
Enter in epicoele 107 and outlet blind hole 108, and make gases at high pressure of the high pressure expanding gas outside moment intervention, so that in epicoele
107 form high pressure gas explosion, generate several times higher than the impact energy that hammer body 5 is directly promoted by compressed gas, then the hammer promoted
Body 5 just can quickly move down shock shovel head 9, and point to working substance by shovel head, so as to complete the air inlet work of a wheel gas handling system
Make.
Therefore, the gases at high pressure continued into repeat the air inlet route of above-mentioned gas handling system again, with regard to that can drive the axle of hammer body 5
To moving back and forth and constant impingement shovel head 9 is operated, then hammer body 5 had both served the effect of jump bit, also corresponded to traditional gas
Distributing valve in spade structure.
Using the pneumatic spade of above-mentioned this gas handling system compared with traditional pneumatic spade, the prerequisite distribution of traditional pneumatic spade is eliminated
Valve arrangement, this had both simplified the design difficulty of structure, also make it that gas handling system is simpler；Meanwhile, it is to utilize supercharging mode
Hammer body work is promoted, rather than traditional pneumatic spade is all to push directly on what hammer body worked by the gases at high pressure of input, accordingly
Just reduce air consumption, avoid gases at high pressure from wasting, also increase impact energy.
It is additionally, since in epicoele 107 and there is air cushion all the time, therefore moving axially upwards for hammer body 5 will not also hit air inlet seat
4, so as to prevent hammer body 5 from breaking parts, back seat shaking force when pneumatic spade is used is decreased, the steady of lifting operation performance relaxes
Adaptive.
In addition, the pneumatic spade with above-mentioned gas handling system, which can also be prevented effectively from, there is the phenomenon that the sky of hammer body 5 is hit, it is specific such as Figure 11
It is shown, when forget dress shovel head or shovel head be stuck in operation process in working substance, now operator, which keeps in mind, pulls outward pneumatic spade to pull out
While going out shovel head 9, air inlet switch 17 is open again and sky hits pneumatic spade；At this moment, if hammer body 5 continues to impact acting, it will hit
Onto the interior step of precursor 7, so as to damage two critical pieces of pneumatic spade, serious meeting scraps pneumatic spade.It is this in order to prevent
Infringement of the situation to pneumatic spade, as long as shovel head 9 is not encountered in the front end of hammer body 5 of the invention, once continue to move along to lowest part, cavity of resorption
106 and inlet channel 101 will be separated, and epicoele 107 is connected with inlet channel 101, then compressed gas is passed through by epicoele 107
The outlet blind hole 108 and venthole 109 for crossing hammer body 5 are immediately discharged to outlet chamber 110, then are discharged by steam vent 111, then hammer body 5 is just
Can stop motion so that technically solve because sky is hit damage the problem of.
Integral material of the present invention is mainly made of light aluminum alloy and engineering plastics so that main screw lift is light and handy, outward appearance
Neatly, operating handle is good.
Described above is only the specific embodiment of the present invention, it should be appreciated by those skilled in the art that any and embodiment
Equivalent structure design, should be included in the scope of the protection.
Claims (10)
1. a kind of valveless booster-type pneumatic spade, including connecting tube（3）, handle installed in connecting tube top（1）, installed in connecting tube
The cylinder body of bottom（6）With the precursor installed in inferior part of the cylinder block（7）；Described handle（1）It is interior to be provided with inlet channel（101）, connection
Pipe（3）Inside it is communicated with inlet channel（101）Inlet chamber（103）；Described cylinder body（6）And precursor（7）It is interior to be provided with hammer body
（5）, the hammer body top axial moves back and forth sealing and is inserted into cylinder body（6）It is interior, precursor（7）Shovel of the bottom provided with axially activity inserting
Head（9）, it is characterised in that described cylinder body（6）The air inlet seat that top is installed provided with sealing（4）, the air inlet seat and hammer body（5）On
Cylinder body between end（6）Interior formation epicoele（107）, hammer body（5）Outer wall and cylinder body（6）Cavity of resorption is formed between inwall（106）, hammer body
（5）With precursor（7）Between form outlet chamber（110）；Described cylinder body（6）Inside it is communicated with cavity of resorption（106）Cylinder body air flue
（105）, air inlet seat（4）It is provided with and is respectively communicated with inlet chamber（103）With cylinder body air flue（105）Air admission hole（104）；Described hammer
Body（5）Inside it is communicated with epicoele（107）Outlet blind hole（108）, hammer body（5）Side is communicated with outlet blind hole（108）Go out
Stomata（109）, the venthole is by hammer body（5）Axial reciprocating movement and connect outlet chamber（110）Or cavity of resorption（106）；Described
Precursor（7）Side is provided with and is respectively communicated with outlet chamber（110）With the steam vent of ambient atmosphere（111）.
2. valveless booster-type pneumatic spade according to claim 1, it is characterised in that described connecting tube（3）With cylinder body（6）It
Between provided with interconnect coupling sleeve（13）, described precursor（7）Upper end is directly threadedly attached to cylinder body（6）Lower end.
3. valveless booster-type pneumatic spade according to claim 1, it is characterised in that described handle（1）Middle part passes through connecting seat
（14）With connecting tube（3）Top seal is connected T-shaped；Described handle（1）One end is communicated with inlet channel（101）'s
Inlet suction port（16）With the air inlet switch for opening and closing inlet suction port（17）, handle（1）The other end is provided with plug dress closing inlet channel
（101）Cap stopper（2）.
4. valveless booster-type pneumatic spade according to claim 1, it is characterised in that described handle（1）And connecting tube（3）
Using light aluminum alloy, handle（1）Outer wrapping flexible boot（15）；Described connecting seat（14）For plastic seat.
5. valveless booster-type pneumatic spade according to claim 1, it is characterised in that described air inlet seat（4）Top surface is provided with groove
（41）The air admission hole of groove periphery is arranged on 6 ~ 8 circumference uniform distributions（104）, each air admission hole（104）With groove（41）Between
It is equipped with the link slot being connected（42）；Described cylinder body air flue（105）With air admission hole（104）Correspondence connection.
6. valveless booster-type pneumatic spade according to claim 1, it is characterised in that described precursor（7）It is interior be provided with axially through
Mounting hole（71）, precursor side is communicated with the side opening of mounting hole（72）, the side opening is interior to be provided with clamping steel ball（11）；Described
Precursor（7）Bottom is provided with the installation set of movable set（8）, the installation set inwall is provided with convex portion（81）And recess（82）；Described
Installation set（8）Move up drive recess（82）Just to clamping steel ball（11）, the clamping steel ball retraction side opening（72）, shovel head（9）
Upper end is inserted into mounting hole（71）It is interior or from mounting hole（71）It is interior to depart from；Described installation set（8）Move down drive convex portion
（81）Pushing tow clamping steel ball（11）, clamping steel ball stretching side opening（72）It is fitted in shovel head（9）The annular groove of periphery（91）It is interior；Institute
The annular groove stated（91）Width have to be larger than side opening（72）Aperture, and make clamping steel ball（11）Have axially up and down reciprocatingly in annular groove
Mobile stroke distances.
7. valveless booster-type pneumatic spade according to claim 6, it is characterised in that described precursor（7）Bottom is provided with suit
Spring（12）, the downward pushing installation set of the spring（8）, and then drive convex portion（81）Pushing tow clamping steel ball（11）.
8. valveless booster-type pneumatic spade according to claim 6, it is characterised in that described installation set（8）Lower end is provided with fixation
In precursor（7）On stop bit jump ring（10）.
9. a kind of gas handling system of valveless booster-type pneumatic spade, including inlet channel（101）And inlet chamber（103）, it is characterised in that
Described gas handling system also includes the air admission hole described in any one of claim 1 ~ 9（104）, cylinder body air flue（105）, epicoele
（107）, cavity of resorption（106）, outlet blind hole（108）, venthole（109）, outlet chamber（110）And steam vent（111）；Described air inlet
Passage（101）Interior input gases at high pressure, the gases at high pressure are successively through inlet chamber（103）, air admission hole（104）, cylinder body air flue（105）
Into cavity of resorption（106）It is interior, epicoele（107）, outlet blind hole（108）, venthole（109）, outlet chamber（110）And steam vent（111）
It is connected, hammer body（5）Promoted and quickly moved up by gases at high pressure；The hammer body（5）Move up the drive venthole
（109）Into cylinder body（5）Inside it is closed, the cavity of resorption（106）Inside continue into gases at high pressure, epicoele（107）With outlet blind hole
（108）It is interior with hammer body（5）Move up generation vacuum compression, and form high pressure expanding gas；Described hammer body（5）After
It is continuous to move up the drive venthole（109）Connect cavity of resorption（106）, the cavity of resorption（106）, venthole（109）, outlet blind hole
（108）And epicoele（107）Moment connects, and the gases at high pressure moment persistently inputted enters epicoele（107）With outlet blind hole（108）It is interior
And high pressure gas explosion is produced, and then promote hammer body（5）Quickly move down shock shovel head（9）, complete an air inlet for taking turns gas handling system
Work.
10. the gas handling system of valveless booster-type pneumatic spade according to claim 9, it is characterised in that described hammer body（5）To
Under be moved to lowest part, cavity of resorption（106）And inlet channel（101）It will be separated, epicoele（107）With inlet channel（101）Even
Logical, then compressed gas is by epicoele（107）Through hammer body（5）Outlet blind hole（108）And venthole（109）Drain into outlet chamber（110）,
Again by steam vent（111）It is expelled directly out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710635900.7A CN107234596A (en) | 2017-07-31 | 2017-07-31 | Valveless booster-type pneumatic spade and its gas handling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710635900.7A CN107234596A (en) | 2017-07-31 | 2017-07-31 | Valveless booster-type pneumatic spade and its gas handling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107234596A true CN107234596A (en) | 2017-10-10 |
Family
ID=59988500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710635900.7A Pending CN107234596A (en) | 2017-07-31 | 2017-07-31 | Valveless booster-type pneumatic spade and its gas handling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107234596A (en) |
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| WO2021035630A1 (en) * | 2019-08-29 | 2021-03-04 | 杭州联和工具制造有限公司 | Pneumatic shovel |
| CN112677110A (en) * | 2019-10-18 | 2021-04-20 | 苏州宝时得电动工具有限公司 | Hammering tool |
| CN114986448A (en) * | 2022-06-20 | 2022-09-02 | 华中科技大学 | Electronic stepless hammer force adjusting hand-held air hammer |
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| CN114986448A (en) * | 2022-06-20 | 2022-09-02 | 华中科技大学 | Electronic stepless hammer force adjusting hand-held air hammer |
| CN114986448B (en) * | 2022-06-20 | 2022-12-09 | 华中科技大学 | Electronic stepless hammer force adjusting hand-held air hammer |
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