CN204450453U - A kind of handheld anti-explosion air driven hammer drill - Google Patents
A kind of handheld anti-explosion air driven hammer drill Download PDFInfo
- Publication number
- CN204450453U CN204450453U CN201520080598.XU CN201520080598U CN204450453U CN 204450453 U CN204450453 U CN 204450453U CN 201520080598 U CN201520080598 U CN 201520080598U CN 204450453 U CN204450453 U CN 204450453U
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- ratchet
- piston
- keyway
- jacket casing
- head
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Abstract
The utility model discloses a kind of handheld anti-explosion air driven hammer drill, described outer surface of piston is provided with helical form keyway and linearity keyway, the jacket casing, ratchet, ratchet and the rotational sleeve that are placed on piston periphery is provided with in described head, the inwall of described ratchet is fixedly connected and is bumped into the helical form keyway piston on surface, the length of described ratchet is equal with the length of ratchet external tooth, be provided with jacket casing in described rotation jacket casing, described jacket casing inwall is fixedly connected and is bumped into the driving key of linearity keyway.The utility model adopts pneumatic mode, due to Pneumatic explosion-prevention no-spark, the features such as security performance is good, are mainly used in the tunnel, and narrow job space of pipe laying on the components such as rock, brick wall, concrete, dangerous wet gas such as erection power line, mounting foot bolt, chemical plant, refinery, building, heavy industry, colliery etc. under water.
Description
Technical field
The utility model relates to the boring field in pipe laying on the components such as rock, brick wall, concrete, erection power line, mounting foot bolt, specifically a kind of handheld anti-explosion air driven hammer drill.
Background technology
The basic structure of China's existing handheld anti-explosion air driven hammer drill is very nearly the same, form by rubber shock-absorbing hand handle, handle connector, handle body, control valve, distributing valve group, cylinder body, piston, head, ratchet, ratchet, turning set and drill steel, the weak point of these rock drills is: (1) rubber shock-absorbing handle strength is not enough, fragile; (2) length of action of ratchet and ratchet is less than the physical length of ratchet, takies more multimachine body inner space, and the wearing and tearing of thorn claw are large, and service life is short; (3) convex surface of cylinder ends is little, is unfavorable for coordinating between cylinder body with head, and during work, vibrations are large; (4) ratchet and head space little, the piston instantaneous pressure that compressed air produces when stroke movement is large, is unfavorable for the operation of piston.
Utility model content
For solving the defect that prior art exists, the purpose of this utility model is to provide that a kind of advanced technology, structure are simple, making and installation is convenient, the Handheld pneumatic rock drill of long working life.
The utility model forms like this:
A kind of handheld anti-explosion air driven hammer drill, comprise the body with handle, jettron is provided with in described handle, described body includes gas port post, cylinder, head, be located at the piston for beating drill steel in cylinder, gas port post is connected with cylinder, cylinder is connected with fairlead, it is characterized in that: described outer surface of piston is provided with helical form keyway and linearity keyway, the jacket casing being set in piston outer wall is provided with in described head, ratchet, ratchet and rotational sleeve, described ratchet inwall is fixed with the helical form keyway piston being bumped into helical form keyway, the length of described ratchet is equal with the length of ratchet external tooth, jacket casing is provided with in described rotation jacket casing, described jacket casing inwall is fixed with the driving key being bumped into linearity keyway, the external tooth of ratchet is meshed with ratchet, tower spring fitting is in the ratchet holddown groove of handpiece case, ratchet is installed on the piston rod of piston.
Described fairlead is connected with the end of head, and the union end of fairlead and head adopts large planar projections respective outer side edges.
The beneficial effects of the utility model:
The utility model adopts pneumatic mode, due to Pneumatic explosion-prevention no-spark, the features such as security performance is good, are mainly used in the tunnel, and narrow job space of pipe laying on the components such as rock, brick wall, concrete, dangerous wet gas such as erection power line, mounting foot bolt, chemical plant, refinery, building, heavy industry, colliery etc. under water; The length of action of ratchet and ratchet and ratchet, the outer tine length of ratchet are equal, ratchet, ratchet external tooth effectively utilize length longer, more wear-resistant.Meanwhile, the utility model has the advantages such as structure is simple, making and installation convenience, long working life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is side view of the present utility model.
Fig. 3 is top view of the present utility model.
Number in the figure is: 1, handle, 2, jettron, 3, top cover, 4, straight trough elastic cylindrical pin, 5, valve rod, 6, rubber cushion, 7, air inlet valve, 8, A type straight pin, 9, gas port post, 10, cylinder, 11, fluting flush end holding screw, 12, little spring, 13, alignment pin, 14, push rod, 15, jacket casing, 16, head, 17, steel ball, 18, steel bushing, 19, spring, 20, steel ball, 21, axle-steel silk back-up ring, 22, rotate jacket casing, 23, mat, 24, I type non-metallic insert hexagonal locking nut, 25, turriform spring, 26, ratchet, 27, fairlead, 28, piston, 29, valve gap, 30, promote aerofoil, 31, spring, 32, " O " shape sealing ring, 33, collar nut, 34, ratchet, 35, long bolt, 36, external screw thread leads directly to, 37, bar of holding one's breath emits, 38, bolt, 39, passage.
Detailed description of the invention
See accompanying drawing, a kind of handheld anti-explosion air driven hammer drill, comprise the body with handle 1, jettron 2 is provided with in handle 1, body includes gas port post 9, cylinder 10, head 16, be located at the piston 28 for beating drill steel in cylinder 10, gas port post 9 is connected with cylinder 10, cylinder 10 is connected with fairlead 27, described piston 28 outer surface is provided with helical form keyway and linearity keyway, the jacket casing 15 being set in piston 28 outer wall is provided with in described head, ratchet 34, ratchet 26 and rotational sleeve 22, ratchet 34 inwall is fixed with the helical form keyway piston being bumped into helical form keyway, the length of described ratchet 26 is equal with the length of ratchet 34 external tooth, jacket casing is provided with in described rotation jacket casing, described jacket casing 15 inwall is fixed with the driving key being bumped into linearity keyway, the external tooth of ratchet is meshed with ratchet, tower spring fitting is in the ratchet holddown groove of handpiece case, ratchet is installed on the piston rod of piston, fairlead is connected with the end of head, the union end of fairlead and head adopts large planar projections respective outer side edges.
Described jettron 2 is contained in handle 1, controls air flow direction passage and size in gas port post 9 by palm control jettron 1; Handle 1 is linked together gas port post 9, cylinder 10, head 16 by long bolt 35, is provided with pneumatic control switch 2 in handle 1; Described valve rod 5, rubber cushion 6, air inlet valve 8 are arranged in handle 1 chamber, and gas port post 9 is connected with cylinder 10, and cylinder 10 is connected with fairlead 27, and gas port post 9, cylinder 10, fairlead 27, head 16 are fixed by long bolt 35; The front edge of cylinder 10 is provided with passage 39 and communicates with the forward and backward cavity of cylinder body 10 respectively, and piston 28 loads cylinder 10 and is divided into front/back cavity, and ratchet 26, tower spring 25 are arranged in the ratchet holddown groove of head 16 shell; The piston rod of piston 28 loads in ratchet 34, and the helicla flute of piston rod is meshed with the inner driving key of ratchet 34; Load and rotate jacket casing 22, the driving key of jacket casing 15 in rotation jacket casing 22 is meshed with piston rod straight trough; Being inserted in head 16 makes the external tooth of ratchet 34 be meshed with ratchet 26.Head 16 adopts two layers to empty setting, and make space between ratchet 34 and head 16 inwall comparatively large, piston 28 instantaneous pressure that compressed air produces when stroke movement is little, and the resistance run piston 28 is little.
Insert two bolt of long stem 35 handle 1 gas port posts 9, cylinder 10, fairlead 27 and head 16 from outside bolt hole to couple together, the union end that fairlead 27 is placed on head 16 adopts large planar projections to arrange, make between fairlead 27 with head 16 coordinate more firm, vibrations during reduce engine body running, reduce body wearing and tearing.
During work, connect compressed air by external screw thread straight-through 36, with the jettron 2 in handle 1 make that compressed air is straight-through 36 through outer spiral shell, air inlet valve 7, gas port post 9, promote aerofoil 30, cylinder 10 enters head 16 ante-chamber and promotes piston 28 and make stroke movement, during stroke, ratchet 34 is promoted by the helicla flute on piston rod, the flank of tooth jack-up ratchet 26 of ratchet 34, and ratchet 34 turns round an angle, piston 28 moving linearlies, until impact drilling tool, in piston 28 stroke movement, head 16 back cavity volume reduces gradually, gas is compressed, when piston 28 moves to head 16 ante-chamber and cylinder body passage 39 connects, because suction function makes promotion aerofoil 30 swing the passage cut off to ante-chamber air feed on cylinder 10, the passage opened to back cavity air feed starts to back cavity air feed, piston 28 in effect of inertia down stroke until impact drilling tool then start drawback movement, during backhaul, ratchet 34 is propped up can not rotate by ratchet 26, piston 28 is forced to turn round an angle along helicla flute, thus drive rotation jacket casing 22 corresponding rotation angle, rotating jacket casing 22 drives drilling tool to rotate, thus realize turning pricker motion, in piston 28 drawback movement, front cavity volume reduces gradually, gas is compressed, when piston 28 move to head 16 back cavity communicate with cylinder body passage 39 time, because suction function makes promotion aerofoil 30 swing on cylinder 10, cut off the passage to back cavity air feed, the passage opened to ante-chamber air feed starts to ante-chamber air feed, piston 28 continues drawback movement under effect of inertia until second time stroke movement starts, the motion that goes round and begins again like this makes processed structure is beaten to dig out eyelet.
Claims (2)
1. a handheld anti-explosion air driven hammer drill, comprise the body with handle, jettron is provided with in described handle, described body includes gas port post, cylinder, head, be located at the piston for beating drill steel in cylinder, gas port post is connected with cylinder, cylinder is connected with fairlead, it is characterized in that: described outer surface of piston is provided with helical form keyway and linearity keyway, the jacket casing being set in piston outer wall is provided with in described head, ratchet, ratchet and rotational sleeve, described ratchet inwall is fixed with the helical form keyway piston being bumped into helical form keyway, the length of described ratchet is equal with the length of ratchet external tooth, jacket casing is provided with in described rotation jacket casing, described jacket casing inwall is fixed with the driving key being bumped into linearity keyway, the external tooth of ratchet is meshed with ratchet, tower spring fitting is in the ratchet holddown groove of handpiece case, ratchet is installed on the piston rod of piston.
2. a kind of handheld anti-explosion air driven hammer drill according to claim 1, is characterized in that: described fairlead is connected with the end of head, and the union end of fairlead and head adopts large planar projections respective outer side edges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520080598.XU CN204450453U (en) | 2015-02-04 | 2015-02-04 | A kind of handheld anti-explosion air driven hammer drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520080598.XU CN204450453U (en) | 2015-02-04 | 2015-02-04 | A kind of handheld anti-explosion air driven hammer drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204450453U true CN204450453U (en) | 2015-07-08 |
Family
ID=53657396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520080598.XU Expired - Fee Related CN204450453U (en) | 2015-02-04 | 2015-02-04 | A kind of handheld anti-explosion air driven hammer drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204450453U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110250046A (en) * | 2019-07-08 | 2019-09-20 | 自然资源部海洋减灾中心 | A kind of method of seabed installation coral breeding apparatus |
-
2015
- 2015-02-04 CN CN201520080598.XU patent/CN204450453U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110250046A (en) * | 2019-07-08 | 2019-09-20 | 自然资源部海洋减灾中心 | A kind of method of seabed installation coral breeding apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20220204 |