CN110774236B - Pneumatic impact tool with adjustable pressure - Google Patents
Pneumatic impact tool with adjustable pressure Download PDFInfo
- Publication number
- CN110774236B CN110774236B CN201911143779.1A CN201911143779A CN110774236B CN 110774236 B CN110774236 B CN 110774236B CN 201911143779 A CN201911143779 A CN 201911143779A CN 110774236 B CN110774236 B CN 110774236B
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- block
- cavity
- rotating
- piston
- groove
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- 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
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- 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
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- 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
- B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
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- 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
- B25D9/14—Control devices for the reciprocating piston
Abstract
The invention discloses a pressure-adjustable pneumatic impact tool, which comprises a handle and an operation block, wherein the operation block is fixedly arranged on the handle, a rotating cavity is arranged in the operation block, the rotating cavity is rotatably arranged, a pressure regulating device is arranged on the operation block, the pressure regulating device comprises a movable moving block and a transmission shaft, the transmission shaft is rotatably arranged on the moving block, and a threaded shaft is rotatably arranged at the right end of the transmission shaft through a coupler. The operation is simple and convenient, and the punching work efficiency is improved.
Description
Technical Field
The invention relates to the technical field of impact tools, in particular to a pneumatic impact tool with adjustable pressure.
Background
The pneumatic impact tool is a tool which takes compressed air as a power medium and utilizes the energy of the compressed air to generate continuous impact load, and is generally applied to the fields of hydrographic well drilling, coreless geological drilling, geological disaster prevention and control engineering, mine rock drilling and the like. The present invention sets forth a device that solves the above problems.
Disclosure of Invention
The technical problem is as follows:
the existing pneumatic impact tool has large vibration, inconvenient mode conversion and operation and can not adjust the impact force.
In order to solve the problems, the pneumatic impact tool with adjustable pressure is designed in the embodiment, the pneumatic impact tool with adjustable pressure comprises a handle and an operation block, the operation block is fixedly arranged on the handle, a rotation cavity is arranged in the operation block, the rotation cavity is provided with a block in a rotating manner, the block is provided with a pressure adjusting device, the pressure adjusting device comprises a movable moving block and a transmission shaft, the transmission shaft is rotatably arranged on the moving block, the right end of the transmission shaft is rotatably provided with a threaded shaft through a coupler, the right end of the threaded shaft is in threaded connection with a piston rod, the moving block can change the rotation center of the piston rod, the piston rod can be driven to swing during rotation, a transmission device is arranged on the lower side of the rotation cavity and comprises a meshing bevel gear which can rotate and is in power connection with the pressure adjusting device, the right side of the meshing bevel gear is provided with a driving bevel gear which can be meshed and connected, a connecting shaft is fixedly arranged at the center of the driving bevel gear, a meshing groove with an inner end wall in a toothed structure is arranged in the connecting shaft, a buffer cavity is arranged in the wall of the right end of the operation block, an impact block is slidably arranged in the buffer cavity, an impact device is arranged in the impact block and comprises a slidable pushing piston, the right end of the piston rod is hinged and arranged on the pushing piston, the piston rod can push the pushing piston to horizontally reciprocate when rotating, the change of the rotating center of the piston rod can change the pressure generated by the impact device, an installation device is arranged at the right side of the impact device, a drill bit can be installed in the installation device, and the pneumatic impact force generated by the operation of the impact device can push the drill bit to move to punch holes.
Wherein, the pressure regulating device comprises a moving groove arranged in the inner part, a rack is fixedly arranged on the lower end wall of the moving groove, a power motor is fixedly arranged on the left end wall of the moving groove, a moving screw rod is dynamically arranged at the right end of the power motor, the right end of the moving screw rod is rotatably connected with the right end wall of the moving groove, a moving block is arranged on the moving screw rod in a threaded manner, a transmission cavity is arranged in the moving block, a transmission gear with the lower side meshed with the rack is rotatably arranged in the transmission cavity, a first bevel gear is fixedly arranged on the front end surface of the transmission gear, a second bevel gear is meshed with the upper side of the first bevel gear, a gear rotating shaft is fixedly arranged at the center of the second bevel gear, a meshing cavity is arranged on the upper side of the transmission cavity, the upper end of the gear rotating shaft extends into the meshing cavity and is fixedly provided with a third bevel gear, and the right end of the third bevel gear is meshed with a fourth bevel gear, the left end of the transmission shaft is fixedly arranged at the center of the fourth bevel gear, so that the power motor works, the position of the moving block in the moving groove can be adjusted, the distance between the moving block and the piston rod is further adjusted, the rotating center of the piston rod is changed, and the working displacement of the piston rod is adjusted.
Preferably, the moving groove is located on a side away from the center, and the moving block is movable within the moving groove by a distance smaller than the radius.
Wherein, transmission includes the drive chamber, drive gear is installed through the axis of rotation in the drive chamber, the axis of rotation upper end extends to rotate the intracavity and with link firmly, axis of rotation lower extreme power is connected with rotates the motor, drive gear right side meshing is connected with the straight-teeth gear that the terminal surface linked firmly under the meshing bevel gear, slidable is equipped with the sliding block in the drive chamber, drive bevel gear through the connecting axle rotate install in the sliding block, the drive chamber outside is equipped with the sliding tray, slidable is equipped with the slide bar in the sliding tray, slide bar upper end and the sliding block front and back end respectively fixed mounting, terminal surface sets firmly the press lever that the lower extreme extends to the external world under the slide bar, the press lever extends to the handle left side in, just press the lever left end with set firmly pressure spring between the handle, and a button is arranged at the lower end of the pressing rod, so that the button is pressed leftwards to enable the sliding rod to move leftwards, the transmission bevel gear is meshed with the meshing bevel gear, and the rotating motor is used as the rotation of the piston rod and the transmission bevel gear to provide power.
Wherein, the impact device includes the piston chamber, slidable install in the promotion piston in the piston chamber, the piston rod right-hand member extends to in the piston chamber, promotion piston right side slidable is equipped with the impact piston, slidable is equipped with the left end and extends to in the piston chamber wall in the piston chamber, the cover is equipped with expanding spring on the ejector pad, the terminal surface sets firmly under the impact block is used for the piston chamber that the impact block resets, impact block left end face butt be equipped with the left end with the buffer block that the buffer block left end wall linked firmly, thereby it can promote to promote the piston moves to the right impact piston moves to the right and produces the impact force, the impact piston promotes the ejector pad moves to the right, at the in-process of strikeing the removal of impact block can produce the vibration, through the buffer block reduces the vibration impact of impact block is strikeed.
Wherein, the mounting device comprises a mounting cavity positioned at the right side of the piston cavity, a rotating block with a tooth-shaped structure at the periphery is rotationally arranged in the mounting cavity, a guide chute is arranged in the rotating block, a guide slide block is slidably arranged in the guide chute, a connecting block with a left end surface fixedly connected with the push block is slidably arranged in the rotating block, the lower end of the connecting block is fixedly connected with the guide slide block, a mounting groove is arranged in the connecting block, the left end of the drill bit is inserted into the mounting groove, an inserting groove is arranged on the drill bit, a magnetic block is slidably arranged in the connecting block, the lower end extends into the inserting groove to lock the drill bit, a hydraulic groove is arranged in the rotating block, a hydraulic cylinder is fixedly arranged on the upper end wall of the hydraulic groove, a telescopic shaft is dynamically arranged at the lower end of the hydraulic cylinder, a telescopic block is fixedly arranged at the lower end of the telescopic shaft, and the telescopic block and the magnetic block can be magnetically connected with the magnetic block, thereby the pneumatic cylinder work drives flexible piece descends, then the magnetic path descends and inserts in the inserting groove, with the drill bit install in the connecting block, then the promotion piston promotes right the drill bit impact work, when the turning block rotates, drive the drill bit rotates and punches.
Preferably, a rotating gear engaged with the rotating block is rotatably mounted in the lower end wall of the rotating block through a spline housing, a spline shaft is connected to the left end of the spline housing through a spline, the left end of the spline shaft extends into the meshing groove and is fixedly provided with a tooth block, and the tooth block can be engaged with the meshing groove, so that when the tooth block is engaged with the meshing groove, the transmission bevel gear rotates to drive the rotating gear to rotate, and the rotating block rotates.
Preferably, the installation cavity right side is equipped with and presss from both sides tight chamber, it is equipped with four tight pieces of clamp to press from both sides tight intracavity to be equipped with slidable, it can splice to be complete annular to press from both sides tight piece, it is equipped with the flexible groove of two symmetries in the tight piece to press from both sides, and is adjacent press from both sides tight piece on be connected with the connecting rod between the flexible groove, the connecting rod is located the partial cover in flexible inslot is equipped with extrusion spring, press from both sides tight piece periphery cover and be equipped with the torsional spring, thereby press from both sides tight piece and be in under the torsional spring effect to the center gathering together, and then will the drill bit presss from both sides tightly, improves the stability of drill bit installation.
The invention has the beneficial effects that: the drill bit is driven to reciprocate to punch the rock or the wall by compressing the air through the reciprocating movement of the pushing piston to generate energy, wherein the moving distance of the pushing piston can be adjusted through the pressure adjusting device, so that the impact force of the drill bit is adjusted, the use range and the requirements of the tool are increased, in addition, the drill bit has two working modes of impact and rotary impact, the switching between the modes is realized only by pressing a button, the operation is simple and convenient, and the punching working efficiency is improved.
Drawings
For ease of illustration, the invention is described in detail by the following specific examples and figures.
FIG. 1 is a schematic view of the overall structure of a pneumatic impact tool with adjustable pressure according to the present invention;
FIG. 2 is an enlarged schematic view of "A" of FIG. 1;
FIG. 3 is an enlarged view of "B" of FIG. 1;
FIG. 4 is a schematic view of the structure in the direction "C-C" of FIG. 3;
FIG. 5 is an enlarged view of the structure of FIG. 1 at "D";
FIG. 6 is a schematic view of the structure in the direction "E-E" of FIG. 5.
Detailed Description
The invention will now be described in detail with reference to fig. 1-6, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The invention relates to a pressure-adjustable pneumatic impact tool, which is mainly used for impacting and punching, and the invention is further explained by combining the attached drawings of the invention:
the invention relates to a pressure-adjustable pneumatic impact tool, which comprises a handle 50 and an operation block 11, wherein the operation block 11 is fixedly arranged on the handle 50, a rotation cavity 12 is arranged in the operation block 11, the rotation cavity 12 is rotatably provided with a block 13, the block 13 is provided with a pressure adjusting device 90, the pressure adjusting device 90 comprises a movable moving block 26 and a transmission shaft 30, the transmission shaft 30 is rotatably arranged on the moving block 26, the right end of the transmission shaft 30 is rotatably provided with a threaded shaft 32 through a coupler 31, the right end of the threaded shaft 32 is in threaded connection with a piston rod 33, the movement of the moving block 26 can change the rotation center of the piston rod 33, the block 13 can drive the piston rod 33 to swing when rotating, the lower side of the rotation cavity 12 is provided with a transmission device 89, the transmission device 89 comprises a meshing bevel gear 39 which can rotate and is in power connection with the pressure adjusting device 90, a transmission bevel gear 42 which can be meshed and connected with the right side of the meshing bevel gear 39, a connecting shaft 43 is fixedly arranged at the center of the transmission bevel gear 42, an engaging groove 51 with a tooth-shaped inner end wall is arranged in the connecting shaft 43, a buffer cavity 35 is arranged in the right end wall of the operating block 11, an impact block 36 is slidably arranged in the buffer cavity 35, an impact device 88 is arranged in the impact block 36, the striking device 88 comprises a slidable push piston 56, the right end of the piston rod 33 is hinged on the push piston 56, the piston rod 33 rotates to push the push piston 56 to reciprocate horizontally, and the change of the rotation center of the piston rod 33 changes the pressure generated by the striking device 88, a mounting device 87 is arranged at the right side of the impact device 88, the drill bit 76 can be mounted in the mounting device 87, the pneumatic impact force generated by the operation of the striking device 88 pushes the drill bit 76 to move for drilling.
According to the embodiment, the pressure regulating device 90 is described in detail below, the pressure regulating device 90 includes a moving slot 16 disposed in the block 13, a rack 80 is fixedly disposed on a lower end wall of the moving slot 16, a power motor 20 is fixedly disposed on a left end wall of the moving slot 16, a moving lead screw 17 having a right end rotatably connected to a right end wall of the moving slot 16 is dynamically mounted on a right end of the power motor 20, the moving block 26 is threadedly mounted on the moving lead screw 17, a transmission cavity 21 is disposed in the moving block 26, a transmission gear 22 having a lower side engaged with the rack 80 is rotatably mounted in the transmission cavity 21, a first bevel gear 23 is fixedly disposed on a front end surface of the transmission gear 22, a second bevel gear 24 is meshingly connected to an upper side of the first bevel gear 23, a gear rotating shaft 25 is fixedly disposed at a center of the second bevel gear 24, a meshing cavity 27 is disposed on an upper side of the transmission cavity 21, an upper end of the gear rotating shaft 25 extends into the meshing cavity 27 and a third bevel gear 29 is fixedly disposed, the right end of the third bevel gear 29 is engaged with a fourth bevel gear 28, and the left end of the transmission shaft 30 is fixedly arranged at the center of the fourth bevel gear 28, so that the power motor 20 works, the position of the moving block 26 in the moving groove 16 can be adjusted, the distance between the moving block 26 and the piston rod 33 can be adjusted, the rotation center of the piston rod 33 is changed, and the working displacement of the piston rod 33 is adjusted.
Advantageously, the moving groove 16 is located on the side away from the center of the block 13, and the moving block 26 is movable within the moving groove 16 by a distance less than the radius of the block 13.
According to the embodiment, the transmission device 89 is described in detail below, the transmission device 89 includes a driving cavity 37, a driving gear 38 is rotatably installed in the driving cavity 37 through a rotating shaft 14, the upper end of the rotating shaft 14 extends into the rotating cavity 12 and is fixedly connected with the block 13, a rotating motor 15 is power-connected to the lower end of the rotating shaft 14, a spur gear 40 fixedly connected with the lower end surface of the meshing bevel gear 39 is engaged and connected to the right side of the driving gear 38, a sliding block 41 is slidably installed in the driving cavity 37, a transmission bevel gear 42 is rotatably installed in the sliding block 41 through the connecting shaft 43, a sliding groove 47 is formed outside the driving cavity 37, a sliding rod 44 is slidably installed in the sliding groove 47, the upper end of the sliding rod 44 and the front and rear ends of the sliding block 41 are respectively fixedly installed, a pressing rod 45 whose lower end surface extends to the outside is fixedly installed on the lower end surface of the sliding rod 44, the pressing rod 45 extends leftwards into the handle 50, a pressure spring 48 is fixedly arranged between the left end of the pressing rod 45 and the handle 50, and a button 46 is arranged at the lower end of the pressing rod 45, so that the button 46 is pressed leftwards, the sliding rod 44 moves leftwards, the transmission bevel gear 42 is meshed with the meshing bevel gear 39, and the rotating motor 15 works to provide power for the rotation of the piston rod 33 and the transmission bevel gear 42.
According to the embodiment, the impact device 88 is described in detail below, the impact device 88 includes a piston cavity 55, the push piston 56 is slidably mounted in the piston cavity 55, the right end of the piston rod 33 extends into the piston cavity 55, an impact piston 57 is slidably disposed on the right side of the push piston 56, a push block 84 having a left end extending into the piston cavity 55 is slidably disposed in the right end wall of the piston cavity 55, a telescopic spring 83 is sleeved on the push block 84, a piston cavity 55 for resetting the impact block 36 is fixedly disposed on the lower end surface of the impact block 36, the left end surface of the impact block 36 abuts against a buffer block 34 having a left end fixedly connected with the left end wall of the buffer cavity 35, so that the push piston 56 moves to the right to push the impact piston 57 to generate an impact force, the impact piston 57 pushes the push block 84 to move to the right, and the movement of the impact block 36 generates vibration during impact, the vibration impact of the impact block 36 is reduced by the buffer block 34.
According to the embodiment, the following description details the mounting device 87, the mounting device 87 includes a mounting cavity 58 located on the right side of the piston cavity 55, a rotating block 59 with a toothed outer periphery is rotatably disposed in the mounting cavity 58, a sliding guide slot 68 is disposed in the rotating block 59, a sliding guide block 67 is slidably disposed in the sliding guide slot 68, a connecting block 66 with a left end surface fixedly connected with the push block 84 is slidably disposed in the rotating block 59, a lower end of the connecting block 66 is fixedly connected with the sliding guide block 67, a mounting slot 65 is disposed in the connecting block 66, a left end of the drill bit 76 is inserted into the mounting slot 65, an insertion slot 81 is disposed on the drill bit 76, a magnetic block 64 is slidably disposed in the connecting block 66, the lower end extends into the insertion slot 81 to lock the drill bit 76, a hydraulic slot 61 is disposed in the rotating block 59, and a hydraulic cylinder 60 is fixedly disposed on an upper end wall of, the telescopic shaft 62 is mounted at the lower end of the hydraulic cylinder 60 in a power mode, the telescopic block 63 is fixedly arranged at the lower end of the telescopic shaft 62, the telescopic block 63 and the magnetic block 64 can be connected in a magnetic attraction mode, so that the hydraulic cylinder 60 works to drive the telescopic block 63 to descend, the magnetic block 64 descends to be inserted into the insertion groove 81, the drill bit 76 is mounted in the connecting block 66, the push piston 56 pushes the drill bit 76 to work in an impact mode rightwards, and the rotating block 59 drives the drill bit 76 to rotate to punch holes when rotating.
Advantageously, a rotating gear 69 engaged with the rotating block 59 is rotatably mounted in the lower end wall of the rotating block 59 through a spline housing 54, a spline shaft 53 is splined to the left end of the spline housing 54, the left end of the spline shaft 53 extends into the engaging groove 51 and is fixedly provided with a tooth block 52, the tooth block 52 can be engaged with the engaging groove 51, so that when the tooth block 52 is engaged with the engaging groove 51, the rotation of the bevel gear 42 can drive the rotating gear 69 to rotate, and the rotating block 59 can rotate.
Beneficially, the right side of the installation cavity 58 is provided with a clamping cavity 70, the clamping cavity 70 is internally provided with four clamping blocks 71 which can slide, the clamping blocks 71 can be spliced into a complete ring shape, two symmetrical telescopic grooves 72 are arranged in the clamping blocks 71, a connecting rod 73 is connected between the telescopic grooves 72 on the adjacent clamping blocks 71, the part, located in the telescopic grooves 72, of the connecting rod 73 is sleeved with an extrusion spring 74, a torsion spring 75 is sleeved on the periphery of the clamping blocks 71, and therefore the clamping blocks 71 are gathered towards the center under the action of the torsion spring 75, the drill bit 76 is clamped, and the installation stability of the drill bit 76 is improved.
The following will describe in detail the use steps of a pressure adjustable pneumatic impact tool herein with reference to fig. 1 to 6:
initially, the drill 76 is not mounted on the operating block 11, the transmission bevel gear 42 is not engaged with the engagement bevel gear 39, the tooth block 52 is not engaged with the inner wall of the engagement groove 51, the compression spring 48 is in a natural state, the magnet block 64 is located in the connecting block 66 and the hydraulic groove 61, and the piston cavity 55 is filled with the balance gas.
During installation, the drill bit 76 is pushed leftwards, the drill bit 76 penetrates through the clamping cavity 70, the rear left end of the drill bit 76 is inserted into the installation groove 65, the clamping block 71 is pushed to expand outwards when the drill bit 76 penetrates through the clamping cavity 70, the clamping block 71 is enabled to clamp the drill bit 76 under the action of the torsion spring 75, after the drill bit 76 is inserted into the installation groove 65, the hydraulic cylinder 60 works, the telescopic block 63 is pushed to descend through the telescopic shaft 62, the magnetic block 64 descends, the lower end of the installation groove 65 is inserted into the insertion groove 81, the drill bit 76 is installed on the connecting block 66, at the moment, the abutting point of the telescopic block 63 and the magnetic block 64 is flush with the outer end face of the connecting block 66, the magnetic block 64 does not obstruct the movement of the connecting block 66, the magnetic block 64 is driven to move synchronously during horizontal movement of the connecting block 66, and at the moment, the rotating block 59 does not rotate;
when the drill bit 76 is only required to be used by impact, the rotating motor 15 works to drive the driving gear 38 to rotate, the block 13 rotates to drive the moving block 26 to rotate, the pushing piston 56 horizontally reciprocates through transmission among the transmission shaft 30, the coupler 31 and the threaded shaft 32, the pushing piston 56 moves rightwards to push the impact piston 57 to move, the impact piston 57 presses the pushing block 84 rightwards, the connecting block 66 drives the guide sliding block 67 rightwards, the telescopic spring 83 compresses stored force, when the pushing piston 56 resets leftwards, the pushing block 84 moves leftwards to push the impact piston 57 to reset under the elastic restoring force of the telescopic spring 83, the drill bit 76 resets leftwards at the moment, the drill bit 76 is driven to reciprocate along with the rotation of the block 13, and impact force is generated to perform punching;
when the impact force of the drill bit 76 needs to be adjusted, the power motor 20 works to drive the moving lead screw 17 to rotate, the moving block 26 moves rightwards to a required position, the transmission gear 22 rotates under the action of the rack 80, the second bevel gear 24 rotates, the fourth bevel gear 28 is further driven to rotate, the threaded shaft 32 rotates under the transmission of the coupler 31, the threaded shaft 32 moves towards the piston rod 33 and is always in threaded connection with the piston rod 33, the farther the rightwards movement position of the moving block 26 is away from the center of the block 13, the larger the reciprocating movement stroke of the pushing piston 56 is, the larger the generated impact force is, and therefore, the position of the moving block 26 is adjusted according to the required impact force;
when the drill bit 76 needs to be impacted and rotated, the button 46 is manually pressed leftwards, so that the sliding rod 44 moves leftwards to drive the sliding block 41 to move leftwards, the transmission bevel gear 42 is meshed with the meshing bevel gear 39, the tooth block 52 is meshed with the inner end wall of the meshing groove 51, and further, when the rotating motor 15 works to drive the driving gear 38 to rotate, the straight gear 40 and the meshing bevel gear 39 rotate, the transmission bevel gear 42 drives the spline shaft 53 to rotate, the rotating gear 69 rotates, the rotating block 59 drives the drill bit 76 to rotate, and then the drill bit 76 rotates and performs reciprocating impact to perform punching work;
during the impact process, the impact block 36 vibrates, and when the impact block 36 moves to the left, the impact block will impact on the buffer block 34, and the buffer block 34 absorbs the impact energy to reduce the vibration.
The invention has the beneficial effects that: the drill bit is driven to reciprocate to punch the rock or the wall by compressing the air through the reciprocating movement of the pushing piston to generate energy, wherein the moving distance of the pushing piston can be adjusted through the pressure adjusting device, so that the impact force of the drill bit is adjusted, the use range and the requirements of the tool are increased, in addition, the drill bit has two working modes of impact and rotary impact, the switching between the modes is realized only by pressing a button, the operation is simple and convenient, and the punching working efficiency is improved.
In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.
Claims (2)
1. The utility model provides a pressure adjustable pneumatic impact tool, includes handle and operation piece, its characterized in that: the operation block is fixedly arranged on the handle;
a rotating cavity is arranged in the operating block, a block is arranged in the rotating cavity in a rotating mode, a pressure regulating device is arranged on the block and comprises a movable moving block and a transmission shaft, the transmission shaft is rotatably installed on the moving block, a threaded shaft is rotatably installed at the right end of the transmission shaft through a coupler, a piston rod is connected to the right end of the threaded shaft in a threaded mode, the rotating center of the piston rod can be changed through the movement of the moving block, and the piston rod can be driven to swing when the block rotates;
a transmission device is arranged on the lower side of the rotating cavity and comprises a meshing bevel gear which can rotate and is in power connection with the pressure regulating device, the right side of the meshing bevel gear can be in meshing connection with the transmission bevel gear, a connecting shaft is fixedly arranged at the center of the transmission bevel gear, and a meshing groove with a toothed structure at the inner end wall is arranged in the connecting shaft;
a buffer cavity is arranged in the wall of the right end of the operation block, an impact block is slidably arranged in the buffer cavity, an impact device is arranged in the impact block and comprises a slidable pushing piston, the right end of the piston rod is hinged and mounted on the pushing piston, the piston rod can push the pushing piston to horizontally reciprocate when rotating, the pressure generated by the impact device can be changed by changing the rotating center of the piston rod, a mounting device is arranged on the right side of the impact device, a drill bit can be mounted in the mounting device, and the pneumatic impact force generated by the operation of the impact device pushes the drill bit to move for punching;
the pressure regulating device comprises a movable groove arranged in the block;
a rack is fixedly arranged on the lower end wall of the moving groove, a power motor is fixedly arranged on the left end wall of the moving groove, a moving screw rod with the right end rotatably connected with the right end wall of the moving groove is dynamically mounted on the right end of the power motor, the moving block is mounted on the moving screw rod in a threaded manner, a transmission cavity is arranged in the moving block, a transmission gear with the lower side meshed with the rack is rotatably mounted in the transmission cavity, a first bevel gear is fixedly arranged on the front end surface of the transmission gear, a second bevel gear is meshed and connected with the upper side of the first bevel gear, and a gear rotating shaft is fixedly arranged at the center of the second bevel gear;
the upper side of the transmission cavity is provided with a meshing cavity, the upper end of the gear rotating shaft extends into the meshing cavity and is fixedly provided with a third bevel gear, the right end of the third bevel gear is in meshing connection with a fourth bevel gear, and the left end of the transmission shaft is fixedly arranged at the center of the fourth bevel gear;
the moving groove is positioned on one side far away from the center of the block, and the movable distance of the moving block in the moving groove is smaller than the radius of the block;
the transmission includes a drive cavity;
a driving gear is rotatably installed in the driving cavity through a rotating shaft, the upper end of the rotating shaft extends into the rotating cavity and is fixedly connected with the block, the lower end of the rotating shaft is in power connection with a rotating motor, the right side of the driving gear is in meshed connection with a straight gear fixedly connected with the lower end face of the meshed bevel gear, a sliding block is slidably arranged in the driving cavity, and the transmission bevel gear is rotatably installed in the sliding block through the connecting shaft;
a sliding groove is formed in the outer side of the driving cavity, a sliding rod is slidably arranged in the sliding groove, the upper end of the sliding rod and the front end and the rear end of the sliding block are fixedly installed respectively, a pressing rod with the lower end extending to the outside is fixedly arranged on the lower end face of the sliding rod, the pressing rod extends leftwards into the handle, a pressure spring is fixedly arranged between the left end of the pressing rod and the handle, and a button is installed at the lower end of the pressing rod;
the percussion device comprises a piston chamber;
the pushing piston is arranged in the piston cavity in a sliding mode, the right end of the piston rod extends into the piston cavity, the right side of the pushing piston is provided with an impact piston in a sliding mode, the right end wall of the piston cavity is internally provided with a pushing block with the left end extending into the piston cavity in a sliding mode, a telescopic spring is sleeved on the pushing block, the lower end face of the impact block is fixedly provided with a piston cavity for resetting the impact block, and the left end face of the impact block is abutted to a buffer block with the left end fixedly connected with the left end wall of the buffer cavity;
the mounting device comprises a mounting cavity positioned on the right side of the piston cavity;
a rotating block with a toothed periphery is arranged in the mounting cavity in a rotating manner, a guide chute is arranged in the rotating block, a guide sliding block is arranged in the guide chute in a sliding manner, a connecting block with a left end face fixedly connected with the push block is arranged in the rotating block in a sliding manner, the lower end of the connecting block is fixedly connected with the guide sliding block, a mounting groove is arranged in the connecting block, the left end of the drill bit is inserted into the mounting groove, an inserting groove is formed in the drill bit, a magnetic block is arranged in the connecting block in a sliding manner, the lower end of the connecting block extends into the inserting groove to lock the drill bit, a hydraulic groove is arranged in the rotating block, a hydraulic cylinder is fixedly arranged on the upper end wall of the hydraulic groove, a telescopic shaft is dynamically arranged at the lower end of the hydraulic;
and a rotating gear meshed with the rotating block is rotatably arranged in the lower end wall of the rotating block through a spline sleeve, a spline shaft is connected to the left end of the spline sleeve through a spline, the left end of the spline shaft extends into the meshing groove and is fixedly provided with a tooth block, and the tooth block can be meshed with the meshing groove.
2. A pressure adjustable pneumatic impact tool as in claim 1, wherein: a clamping cavity is arranged on the right side of the mounting cavity;
it is equipped with four tight pieces of clamp to press from both sides tight intracavity, it can splice to be complete annular to press from both sides tight piece, it is equipped with the flexible groove of two symmetries in the tight piece to press from both sides, and is adjacent press from both sides tight piece on be connected with the connecting rod between the flexible groove, the connecting rod is located partial cover in the flexible groove is equipped with the extrusion spring, press from both sides tight piece periphery cover and be equipped with the torsional spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911143779.1A CN110774236B (en) | 2019-11-20 | 2019-11-20 | Pneumatic impact tool with adjustable pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN111590736B (en) * | 2020-06-15 | 2021-06-22 | 柏顺娇 | Pottery clay technology is with red porcelain kettle apopore perforating device |
| CN115464029B (en) * | 2022-09-02 | 2023-12-29 | 宝之川电气设备有限公司 | Punching machine for producing high-low voltage electrical appliance cabinet shell |
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