CN220768950U - Shovel blade with structure for converting rotational kinetic energy into linear kinetic energy - Google Patents

Abstract

The utility model discloses a shovel blade with a rotary kinetic energy conversion linear kinetic energy structure, which comprises a machine body and a shovel blade tool head arranged on the front side of the machine body, wherein the shovel blade tool head can move back and forth relative to the machine body, the machine body comprises a shell, an impact mechanism and a driver for providing rotary kinetic energy, the impact mechanism is connected with the driver and receives the rotary kinetic energy provided by the driver, the impact mechanism is used for converting the received rotary kinetic energy into linear kinetic energy of reciprocating linear motion so as to provide axial impact power for the shovel blade tool head, the shovel blade tool head can perform forward impact motion, compared with manual pushing of the shovel blade, the efficiency is higher, and compared with the electric hammer/electric pick structure, the shovel blade has the advantages that the number of impact mechanisms for converting the rotary power into the reciprocating impact power and the driver for providing the power is less, the weight is reduced, and the burden of equipment caused by heavy holding is relieved.

Description

Shovel blade with structure for converting rotational kinetic energy into linear kinetic energy

Technical Field

The utility model relates to a shovel blade, in particular to a shovel blade with a structure for converting rotational kinetic energy into linear kinetic energy.

Background

When the building wall is subjected to refinishing, the original wall surface coating is required to be shoveled, and a shoveling knife is generally required to be used for shoveling the wall surface coating, such as putty powder, emulsion paint, a lime sand layer and the like. The current shovel blade is generally composed of a blade body and a handle.

At present, a scraper knife is manually pushed to scrape off wall surface coatings, for example, a wall surface scraper knife disclosed in patent CN208122362U comprises a handle, a knife seat is connected with one end of the handle in a threaded manner, a blade is arranged on the knife seat, the blade is detachably fixed on the knife seat, and the end of the blade, which extends out of the knife seat, is exposed. When the tool is used, the user holds the handle by hand to push back and forth, so that the handle drives the tool bit to move back and forth to scoop out the coating on the wall surface.

There are also those in which the wall surface coating is removed by mounting the bit of the blade to the hammer/pick and driving the bit back and forth by the hammer/pick. For example, a multifunctional electric hammer disclosed in patent CN201064893Y, and for example, an electric hammer disclosed in patent CN2269464Y, a scraper knife tool head is mounted on the electric hammer/electric pick and driven by the electric hammer/electric pick to reciprocate so as to scrape off the wall surface coating.

Problems with existing blades: 1. the manual shovel blade needs to be pushed manually to remove the coating, parts such as the arm of the shovel blade are easy to fatigue after being pushed for a long time, and the efficiency is low. 2. Through installing scraper knife tool bit on electric hammer/electric pick, because electric hammer/electric pick is bulky, inside has two sets of drive assembly that are used for driving tool bit rotation and reciprocal impact motion, makes its weight heavier, and the user holds electric hammer/electric pick and uses comparatively inconveniently, and holds for a long time and also comparatively hard.

Disclosure of Invention

Based on the defects that the manual pushing of the shovel blade is time-consuming and labor-consuming and is easy to fatigue, the shovel blade tool head is arranged on the electric hammer/electric pick, the weight is heavy and the like, the shovel blade with the structure for converting the rotational kinetic energy into the linear kinetic energy is provided.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a spiller with rotatory kinetic energy conversion straight line kinetic energy structure, includes organism and the spiller instrument head of setting in the organism front side, the spiller instrument head can be relative the organism front and back activity, the organism includes casing, impact mechanism and is used for providing rotatory kinetic energy's driver, impact mechanism hookup driver and receives the rotatory kinetic energy that the driver provided, impact mechanism is used for converting the rotatory kinetic energy of receipt into reciprocating rectilinear motion's straight line kinetic energy to provide axial impact power to the spiller instrument head, make spiller instrument head can forward impact motion, the rear of casing is equipped with the handle, is equipped with the extension bar between handle and the casing, the both ends of extension bar are respectively with the detachable connection of handle and the casing of both sides, the department of gripping of handle is equipped with control switch.

The further preferable technical scheme of the utility model is as follows: the impact mechanism comprises an impact shaft and a rotating shaft which can rotate relatively, the rotating shaft is connected with the driver and driven by the driver to rotate, one of the rotating shaft and the impact shaft is provided with a guide track, the other of the rotating shaft and the impact shaft is provided with a conversion piece matched with the guide track, and when the rotating shaft rotates relative to the impact shaft, the conversion piece moves along the guide track to enable the impact shaft to reciprocate relative to the rotating shaft.

The further preferable technical scheme of the utility model is as follows: the impact shaft is arranged in the shell, and can move back and forth along the axial direction relative to the shell, and is used for receiving the reciprocating impact power of the impact shaft and transmitting the reciprocating impact power to the scraper knife tool head so as to enable the scraper knife tool head to perform forward impact motion.

The further preferable technical scheme of the utility model is as follows: the scraper knife tool head, the impact mechanism and the driver are sequentially arranged from front to back, so that the shell is of a rod-shaped structure, a grip is arranged at the rear of the shell, and the grip center line is parallel to the movement direction of the scraper knife tool head.

The further preferable technical scheme of the utility model is as follows: the shell comprises a first shell, a middle connecting piece and a second shell, wherein the first shell and the second shell are respectively connected to the front side and the rear side of the middle connecting piece, the driver is arranged in the second shell behind the middle connecting piece, and the impact mechanism is arranged in the first shell in front of the middle connecting piece.

The further preferable technical scheme of the utility model is as follows: the scraper knife tool head is detachably arranged on the front side of the machine body, the front side of the shell is fixedly provided with a scraper knife sleeve, a mounting hole for inserting a connecting rod at the rear end of the scraper knife tool head is arranged in the scraper knife sleeve, the mounting hole extends along the axis direction and penetrates through the two ends of the scraper knife sleeve, a flat shovel lock catch is sleeved on the outer side of the scraper knife sleeve and can move back and forth relative to the scraper knife sleeve so as to switch between a locking position and an unlocking position, a plurality of containing holes communicated with the mounting hole are arranged on the circumferential outer wall of the scraper knife sleeve, steel balls are contained in the containing holes, a clamping groove corresponding to the containing holes is arranged on the outer wall of the connecting rod, the clamping groove has an extending length for the steel balls to move back and forth,

when the flat shovel lock catch moves to the locking position, the flat shovel lock catch is blocked at the outer side of the steel ball to limit the steel ball to be separated from the clamping groove; when the flat shovel lock catch moves to the unlocking position, a space is formed in the flat shovel lock catch for the steel balls to move outwards to be separated from the clamping groove;

an elastic piece is arranged between the flat shovel lock catch and the shell to enable the flat shovel lock catch to be kept at a locking position, and the striking shaft is arranged in the mounting hole.

The further preferable technical scheme of the utility model is as follows: the impact shaft is arranged in the rotating shaft and can move back and forth along the axial direction relative to the rotating shaft, the impact shaft and the shell are limited in relative rotation, a central hole for accommodating the impact shaft is formed in the center of the rotating shaft, the central hole extends along the axis direction and penetrates through two ends of the rotating shaft, the guide rail is a ring of rail surface arranged on the inner wall of the rotating shaft or the outer wall of the impact shaft, the impact mechanism further comprises an elastic energy storage piece which is in butt joint with the impact shaft, the elastic energy storage piece drives the impact shaft to move to one side along the axial direction so that the conversion piece is in butt joint with the rail surface, the rail surface comprises a plurality of climbing sections and falling sections corresponding to the climbing sections, when the conversion piece passes through the climbing sections, the conversion piece drives the impact shaft to overcome the elastic force of the elastic energy storage piece to move to one side along the axial direction, and when the conversion piece passes through the falling sections, the elastic energy storage piece releases the elastic force and drives the impact shaft to move to the other side opposite to the axial direction so as to provide axial impact power for the scraper tool head.

The further preferable technical scheme of the utility model is as follows: the driver comprises a motor, an output shaft of the motor is in transmission connection with a transmission block, the transmission block is driven by the output shaft to rotate, a plurality of transmission teeth are arranged on the transmission block, tooth grooves corresponding to the transmission teeth are arranged at the rear end of the rotating shaft, the transmission teeth are inserted into the tooth grooves, and the rotating shaft is driven to rotate when the transmission block rotates.

The further preferable technical scheme of the utility model is as follows: the inner wall of the central hole is clamped with a clamp spring, the elastic energy storage piece is a spring, two ends of the spring are respectively propped against the impact shaft and the clamp spring, the impact shaft, the rotary shaft and the spring are connected into a whole, the elastic force of the spring pushes one side of the impact shaft to move, the conversion piece is propped against the track surface, the central hole comprises a multistage pore channel with the diameter gradually reduced from back to front, annular step transition is arranged between the pore channels, and the track surface is arranged on the inner wall of the pore channel in the middle of the first-stage pore channel and the last-stage pore channel.

Compared with the prior art, the utility model has the advantages that the power is provided by the driver, the impact mechanism is connected with the driver and receives the rotational kinetic energy provided by the driver, the impact mechanism converts the received rotational kinetic energy into the linear kinetic energy of the reciprocating linear motion so as to provide continuous axial impact power for the tool head of the shovel blade, so that the shovel blade has a knocking force to better and faster shovel the wall coating, the efficiency is higher compared with the manual pushing of the shovel blade, and the shell is internally provided with only one group of impact mechanism for converting the rotational power into the reciprocating impact power and the driver for providing the power, so that the weight is reduced and the burden of the equipment to the holding is relieved compared with the structure of the electric hammer/electric pick.

Drawings

The utility model will be described in further detail below in connection with the drawings and the preferred embodiments, but it will be appreciated by those skilled in the art that these drawings are drawn for the purpose of illustrating the preferred embodiments only and thus should not be taken as limiting the scope of the utility model. Moreover, unless specifically indicated otherwise, the drawings are merely schematic representations, not necessarily to scale, of the compositions or constructions of the described objects and may include exaggerated representations.

FIG. 1 is a schematic view of the overall structure of a blade;

FIG. 2 is a schematic view of a cutting blade in full section;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is an exploded view of the impact mechanism;

FIG. 5 is a schematic cross-sectional view of an impact mechanism;

FIG. 6 is a schematic cross-sectional view of a rotating shaft;

FIG. 7 is a side view of an impact shaft;

FIG. 8 is a schematic cross-sectional view of an impact shaft;

FIG. 9 is a schematic drawing in section of a second impact mechanism;

fig. 10 is a diagram of the movement trace of the conversion member along the guide rail.

In the figure: 1. a grip; 2. a grip; 3. a battery pack; 4. an extension bar; 5. a housing; 6. a flat shovel lock catch; 7. a blade tool head; 8. a connecting rod; 9. holding the center line; 10. a mounting part; 11. a control switch; 12. a driver; 13. a second housing; 14. an intermediate connection; 15. a first housing; 16. a transmission block; 17. a second bearing; 18. clamping springs; 19. an elastic energy storage member; 20. a rotation shaft; 21. an impact shaft; 22. a conversion member; 23. a central bore; 24. an oil-impregnated bearing; 25. a blade sleeve; 26. a front cavity; 27. a rear cavity; 28. a second outer circumferential edge; 29. a striking shaft; 30. an elastic member; 31. a stopping portion; 32. a space for giving way; 33. a drop section; 34. steel balls; 35. an accommodation hole; 36. a clamping groove; 37. a mounting hole; 38. a first bearing hole; 39. a second bearing hole; 40. tooth slots; 41. a groove; 42. a first outer circumferential edge; 43. a first rotation stopping plane; 44. a second rotation stopping plane; 45. a drive tooth; 46. a first stage orifice; 47. a second stage orifice; 48. a third stage orifice; 49. a guide rail; 50. a planar section; 51. and (5) climbing a slope section.

Detailed Description

Preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely illustrative, exemplary, and should not be construed as limiting the scope of the utility model.

It should be noted that: like reference numerals denote like items in the following figures, and thus once an item is defined in one figure, it may not be further defined and explained in the following figures.

The shovel blade with the structure for converting rotational kinetic energy into linear kinetic energy is shown in fig. 1-10, and comprises a machine body and a shovel blade tool head 7, wherein the shovel blade tool head 7 is arranged on the front side of the machine body, the shovel blade tool head 7 can move back and forth relative to the machine body, and the machine body comprises a shell 5, an impact mechanism and a driver 12.

Preferably, the blade tool head 7 is detachably mounted to the front side of the machine body.

As shown in fig. 2 and 3, specifically, an opening is provided at the front side of the housing 5, a blade sleeve 25 is fixed in the opening, a mounting hole 37 for inserting a connecting rod 8 at the rear end of the blade tool head 7 is provided in the blade sleeve 25, the mounting hole 37 extends along the axial direction of the blade sleeve 25 and penetrates through two ends of the blade sleeve 25, a flat blade lock 6 is sleeved at the outer side of the blade sleeve 25, the flat blade lock 6 is sleeved at the outer side of the blade sleeve 25 and can move back and forth relative to the blade sleeve 25 along the length direction of the blade sleeve 25 so as to switch between a locking position and an unlocking position, a plurality of containing holes 35 communicated with the mounting hole 37 are provided on the circumferential outer wall of the blade sleeve 25, steel balls 34 are contained in the containing holes 35, and a clamping groove 36 corresponding to the containing holes 35 is provided on the outer wall of the connecting rod 8.

When the flat shovel lock 6 moves to a locking position relative to the shovel sleeve 25, the flat shovel lock 6 is blocked at the outer side of the steel ball 34 to limit the steel ball 34 to be separated from the clamping groove 36, and the connecting rod 8 is limited to be separated from the mounting hole 37 through the steel ball 34, so that the shovel tool head 7 is mounted on the machine body; when the flat shovel lock 6 moves to the unlocking position relative to the shovel sleeve 25, a space is provided in the flat shovel lock 6 for the steel balls 34 to move outwards to be separated from the clamping groove 36, and at the moment, the connecting rod 8 can be pulled outwards from the mounting hole 37.

The flat shovel lock 6 is internally provided with a relief space 32 and an abutting part 31, when the flat shovel lock 6 moves to a locking position relative to the shovel sleeve 25, the abutting part 31 moves to a position opposite to the accommodating hole 35, and when the flat shovel lock 6 moves to an unlocking position relative to the shovel sleeve 25, the relief space 32 moves to a position opposite to the accommodating hole 35.

The accommodating hole 35 is a round hole, the caliber of the inner opening of the accommodating hole 35 connected with the mounting hole 37 is smaller than the diameter of the steel ball 34, and the steel ball 34 is prevented from falling into the mounting hole 37 completely after the connecting rod 8 is pulled out.

The flat shovel lock 6 is kept at the locking position by the aid of the elastic piece 30 between the flat shovel lock 6 and the shell 5, the flat shovel lock 6 is specifically kept at the locking position by the aid of the elastic piece 30, the flat shovel lock 6 is sleeved outside the shovel blade sleeve 25 by the aid of the reset spring, one end of the reset spring abuts against the flat shovel lock 6, the other end of the reset spring abuts against the shell 5, the front end of the shovel blade sleeve 25 is clamped with the clamp spring 18, the flat shovel lock 6 is pushed to move forwards relative to the shovel blade sleeve 25 by the aid of elastic force of the reset spring, and the flat shovel lock 6 is tightly pressed on the clamp spring 18, so that the flat shovel lock 6 is in the locking position.

During installation, the flat shovel lock 6 is pushed to move backwards relative to the shovel sleeve 25, so that the flat shovel lock 6 moves to an unlocking position, then the connecting rod 8 is inserted into the installation hole 37, the connecting rod 8 pushes the steel ball to retract into the accommodating hole 35, the connecting rod 8 is continuously inserted inwards, the clamping groove 36 on the connecting rod 8 moves to a position opposite to the accommodating hole 35, the steel ball 34 falls into the clamping groove 36 and is clamped with the clamping groove 36, the flat shovel lock 6 is released, and the reset spring drives the flat shovel lock 6 to reset to move to a locking position, so that installation is completed.

The clamping groove 36 has an extension length for the steel balls 34 to move back and forth, so that the connecting rod 8 can move back and forth relative to the scraper knife sleeve 25 when the steel balls 34 are clamped in the clamping groove 36, and the scraper knife tool head 7 can move back and forth relative to the machine body.

The driver 12 is used for providing rotational kinetic energy, the impact mechanism is connected with the driver 12 and receives the rotational kinetic energy provided by the driver 12, and the impact mechanism is used for converting the received rotational kinetic energy into linear kinetic energy of reciprocating linear motion so as to provide axial impact power for the shovel tool head 7, so that the shovel tool head 7 can perform impact motion forwards.

When the shovel blade is used for working, the impact mechanism receives the power output provided by the driver 12 and continuously provides axial impact power for the shovel blade tool head 7, so that the shovel blade has a knocking force to better and faster shovel the wall surface coating, the shovel blade is more labor-saving and higher in efficiency compared with manual pushing, and the shell 5 is internally provided with only one group of impact mechanisms for converting rotary power into reciprocating impact power and the driver 12 for providing power, so that compared with the electric hammer/electric pick structure, the weight is reduced, and the burden of equipment heavy to holding is relieved.

As shown in fig. 4 and 5, the impact mechanism includes an impact shaft 21 and a rotation shaft 20 which are rotatable relative to each other, the rotation shaft 20 is rotatably mounted in the housing 5, the impact shaft 21 is restricted from rotating relative to the housing 5, the rotation shaft 20 is coupled to the driver 12 and is driven to rotate by the driver 12, a guide rail 49 is provided on one of the rotation shaft 20 and the impact shaft 21, a conversion member 22 which is engaged with the guide rail 49 is provided on the other of the rotation shaft 20 and the impact shaft 21, and the conversion member 22 moves along the guide rail 49 when the rotation shaft 20 rotates relative to the impact shaft 21, so that the impact shaft 21 reciprocates relative to the rotation shaft 20.

The impact shaft 21 is provided in the rotary shaft 20 and is movable in the axial direction relative to the rotary shaft 20, a center hole 23 for accommodating the impact shaft 21 is provided in the center of the rotary shaft 20, the center hole 23 extends in the axial direction of the rotary shaft 20 and penetrates through both ends of the rotary shaft 20, the guide rail 49 is a ring of rail surface provided on the inner wall of the rotary shaft 20 or on the outer wall of the impact shaft 21, the impact mechanism further includes an elastic energy storage member 19 abutting against the impact shaft 21, the elastic energy storage member 19 drives the impact shaft 21 to move in the axial direction to one side so that the conversion member 22 abuts against the rail surface, and when the rotary shaft 20 rotates relative to the impact shaft 21, the rail surface cooperates with the conversion member 22 to drive the impact shaft 21 to move in the axial direction opposite to the other side against the elastic force of the elastic energy storage member 19 so that the impact shaft 21 reciprocates relative to the rotary shaft 20.

As shown in fig. 6 to 9, preferably, the track surface is disposed on the inner wall of the central hole 23, the conversion member 22 is disposed on the outer wall of the impact shaft 21, the conversion member 22 is a sphere, the outer wall of the impact shaft 21 is provided with a groove 41 for mounting the sphere, the sphere is partially disposed in the groove 41 and partially protrudes from the groove 41 to be matched with the track surface, the track surface is a circle of inner wall of the central hole 23 and is concaved inwards, the track surface faces the rear end hole of the central hole 23, the elastic energy storage member 19 is disposed at the rear side of the impact shaft 21, the elastic force of the elastic energy storage member 19 pushes the impact shaft 21 to move forwards along the axial direction, so that the sphere exposed outside the groove 41 is propped against the track surface, and when the rotation shaft 20 rotates relative to the impact shaft 21, the sphere moves along the track of the track surface to enable the impact shaft 21 to reciprocate.

As shown in fig. 10, the track surface includes a plurality of climbing sections 51 and a falling section 33 corresponding to the climbing sections 51, when the conversion member 22 passes through the climbing sections 51, the conversion member 22 drives the impact shaft 21 to move to one side in the axial direction against the elastic force of the elastic energy storage member 19, and when the conversion member 22 passes through the falling section 33, the elastic energy storage member 19 releases the elastic force and drives the impact shaft 21 to move to the opposite side in the axial direction, so that the impact shaft 21 provides the axial impact power to the shovel tool head 7.

The number of the climbing sections 51 is the same as that of the falling sections 33, the climbing sections 51 and the falling sections 33 are arranged on the inner wall of one circle of the central hole 23 in a staggered mode, the number of the spheres is the same as that of the climbing sections 51, one sphere is arranged corresponding to one climbing section 51, preferably, the track surface comprises two climbing sections 51 and two falling sections 33, the climbing sections 51 are inclined planes, the falling sections 33 are vertical planes, the falling sections 33 are connected with the climbing sections 51 on two sides through plane sections 50 to form a circle of closed track surface in a surrounding mode, and the distance between the highest position of the climbing sections 51 and the rear end orifice of the central hole 23 is smaller than the distance between the lowest position of the climbing sections 51 and the rear end orifice of the central hole 23.

As shown in fig. 5, preferably, the inner wall of the central hole 23 is clamped with a clamp spring 18, the elastic energy storage member 19 is a spring, the spring is arranged at the rear side of the impact shaft 21, two ends of the spring respectively abut against the impact shaft 21 and the clamp spring 18, the elastic force of the spring pushes the impact shaft 21 to move forward so that the ball abuts against the track surface, the structure enables the rotating shaft 20, the impact shaft 21 and the spring to be connected into a whole, so that the installation of the impact mechanism is facilitated, and only the whole is required to be installed in the shell 5 during the installation without assembling all components.

The outer wall of the impact shaft 21 is provided with a first outer annular edge 42, and two ends of the spring respectively prop against the first outer annular edge 42 and the clamping spring 18. Spacers can be arranged between the clamp springs 18 and the springs at intervals.

When the rotation shaft 20 rotates, the ball moves along the climbing section 51 to move the impact shaft 21 toward the side where the spring is provided, the impact shaft 21 presses the spring to contract the spring to store the force, which is an energy storage process, and when the ball moves from the climbing section 51 to the falling section 33, the spring releases the elastic force to drive the impact shaft 21 to move forward, which is an energy release process.

The central bore 23 includes a plurality of stages of bores with progressively decreasing diameters from back to front, with annular step transitions between the stages, with the raceway surfaces being provided on the inner walls of the bores intermediate the first stage bore 46 and the last stage bore. Preferably, the central hole 23 comprises three stages of holes, the diameter of the first stage hole 46 at the rear end is the largest, the first outer annular edge 42 and the spring are arranged in the first stage hole 46, the outer diameter of the first outer annular edge 42 is equal to the inner diameter of the first stage hole 46, the raceway surface is arranged on the inner wall of the second stage hole 47, the impact shaft 21 extends out of the rotating shaft 20 from the third stage hole 48 at the front end, the outer diameter of the impact shaft 21 is equal to the inner diameter of the third stage hole 48, the impact shaft 21 moves back and forth in the rotating shaft 20 along the axial direction relatively to the rotating shaft 20 more stably, and the multistage holes are convenient for machining the raceway surface.

The rotation shaft 20 is rotatably installed in the housing 5, and the impact shaft 21 is restricted from rotating relative to the housing 5. Specifically, a first bearing and a second bearing 17 are installed in the casing 5 and located at the front end and the rear end of the rotating shaft 20, the first bearing is an oil-containing bearing 24, a bearing hole of the oil-containing bearing 24 comprises a second bearing hole 39 and a first bearing hole 38 which are arranged front and rear, a step transition is arranged between the first bearing hole 38 and the second bearing hole 39, the size of the first bearing hole 38 is larger than that of the second bearing hole 39, the front end of the rotating shaft 20 is inserted into the first bearing hole 38, the front end face of the rotating shaft 20 is attached to the step, the rear end of the rotating shaft 20 is inserted into the second bearing 17, the first bearing and the second bearing 17 are respectively supported at the front end and the rear end of the rotating shaft 20 to position the rotating shaft 20, so that the rotating shaft 20 is rotatably installed in the casing 5, the front end of the rotating shaft 20 is matched with the shape of the first bearing hole 38, the first bearing hole 38 is a round hole, the front end of the rotating shaft 20 is rotatably inserted into the first bearing hole 38, and the rear end of the rotating shaft 20 is inserted into the second bearing 17 to be connected with the inner ring.

The impact shaft 21 extends from the front end of the rotating shaft 20 and sequentially passes through the first bearing hole 38 and the second bearing hole 39, the second bearing hole 39 limits the rotation of the impact shaft 21 relative to the housing 5, at least one first rotation stopping plane 43 is arranged on the side wall of the front end of the impact shaft 21, a second rotation stopping plane 44 corresponding to the first rotation stopping plane 43 is arranged on the inner wall of the second bearing hole 39, and the first rotation stopping plane 43 and the second rotation stopping plane 44 are in surface-to-surface joint so as to limit the rotation of the impact shaft 21 relative to the housing 5.

The oil-impregnated bearing 24 is a member for both restricting the rotation of the impact shaft 21 and serving as a support for one end of the rotation shaft 20.

The actuator 12 may be pneumatic or electric, and when the actuator 12 is pneumatic, an additional source of compressed air is required.

Preferably, the driver 12 is electric, the driver 12 includes a motor, the motor may be an ac motor or a dc motor, the motor is fixedly mounted in the housing 5, an output shaft of the motor is in transmission connection with a transmission block 16, the transmission block 16 is driven to rotate by the output shaft, a plurality of transmission teeth 45 are arranged on the transmission block 16, tooth grooves 40 corresponding to the transmission teeth 45 are arranged at the rear end of the rotation shaft 20, the transmission teeth 45 are inserted into the tooth grooves 40, and the rotation shaft 20 is driven to rotate when the transmission block 16 rotates.

Specifically, the shape of the transmission block 16 is matched with the shape of the first-stage pore canal 46, four transmission teeth 45 are arranged on the peripheral wall of the transmission block 16, four tooth grooves 40 formed by concave inner are arranged on the end face of the rear end of the side wall of the first-stage pore canal 46, when the transmission block 16 is inserted into the rear end opening of the rotating shaft 20, the transmission teeth 45 are inserted into the corresponding tooth grooves 40, the rotation center of the transmission block 16 coincides with the axis of the rotating shaft 20, at the moment, the transmission block 16 abuts against one side of the rotating shaft 20, the oil-containing bearing 24 abuts against the other side of the rotating shaft 20, and the axial movement of the rotating shaft 20 is limited.

The drive connection between the drive block 16 and the output shaft of the motor has a number of ways, for example:

in the first embodiment, shown in fig. 3, the transmission block 16 is directly connected to an output shaft of a motor, and the output shaft of the motor is inserted into the center of the transmission block 16 to drive the transmission block 16 to rotate. Preferably, the axes of the motor shaft, the rotation shaft 20 and the impact shaft 21 of the motor coincide.

Alternatively, the transmission block 16 is in transmission connection with an output shaft of the motor through a gear set, and the transmission block 16 is rotatably connected in the housing 5 through a rotating shaft.

As shown in fig. 3, a striking shaft 29 is provided between the striking shaft 21 and the blade tool bit 7, the striking shaft 29 is provided in the housing 5 and is movable forward and backward in the axial direction with respect to the housing 5, and the striking shaft 29 is configured to receive the reciprocating impact power of the striking shaft 21 and transmit the power to the blade tool bit 7 so as to cause the blade tool bit 7 to perform forward impact motion.

Preferably, the striking shaft 29 is disposed in the mounting hole 37 of the scraper knife sleeve 25, specifically, a movable cavity is disposed in the tail end of the mounting hole 37, a step is disposed on the inner wall of the tail end of the mounting hole 37, the front end of the movable cavity is propped against the step, a clamp spring 18 is disposed at the rear end of the movable cavity, the clamp spring 18 is clamped on the inner wall of the mounting hole 37, the clamp spring 18 and the step limit the movable cavity to move axially, the striking shaft 29 is disposed in the movable cavity, a second outer annular edge 28 is disposed on the peripheral wall of the striking shaft 29, the outer diameter of the second outer annular edge 28 is equal to the inner diameter of the movable cavity, the front end and the rear end of the striking shaft 29 extend out of two ends of the movable cavity respectively and are used for being in collision linkage with the striking shaft 21 and the scraper knife tool head 7, the two ends of the movable cavity are provided with a cavity opening through which the striking shaft 29 passes, the diameter of the cavity opening is smaller than the diameter of the second outer annular edge 28, and a space for the second outer annular edge 28 to move back and forth is disposed in the mounting hole 37 of the scraper knife sleeve 25.

The movable cavity comprises a front cavity 26 and a rear cavity 27.

Preferably, the axis of the striking shaft 29 coincides with the axis of the rotary shaft 20.

In addition, a handle 1 is arranged at the rear of the shell 5, an extension bar 4 is arranged between the handle 1 and the shell 5, two ends of the extension bar 4 are respectively detachably connected with the handle 1 and the shell 5 at two sides, and a control switch 11 is arranged at the holding position 2 of the handle 1.

The extension bar 4 can be connected with the handle 1 and the shell 5 through screws, or the extension bar 4 can be connected with the handle 1 and the shell 5 through hoops, or the extension bar 4 can be connected with the handle 1 and the shell 5 at two sides through threads.

The extension bar 4 can enable the shovel blade to be used in places with high positions, and the length of the extension bar 4 can be set according to requirements.

The handle 1 is also provided with a controller, and the rear end of the handle 1 is provided with a mounting part 10 for mounting the battery pack 3.

The scraper knife tool head 7, the impact mechanism and the driver 12 are sequentially arranged from front to back, the shell 5 is in a rod-shaped structure, the handle 1 is arranged at the rear of the shell 5, the whole machine body is in a long rod-shaped structure, in addition, the holding center line 9 of the handle 1 is parallel to the movement direction of the scraper knife tool head 7, and the scraper knife tool head is convenient for a user to hold a scraper knife.

The housing 5 comprises a first casing 15, a middle connecting piece 14 and a second casing 13, the first casing 15 and the second casing 13 are respectively connected to the front side and the rear side of the middle connecting piece 14, the driver 12 is arranged in the second casing 13 at the rear side of the middle connecting piece 14, and the impact mechanism is arranged in the first casing 15 at the front side of the middle connecting piece 14. The housing 5 is provided in a three-part construction to facilitate the mounting of the impact mechanism and the driver 12.

When the control switch 11 is pressed down, the motor is started, the rotating shaft 20 is driven to rotate through the rotating block, the track surface is matched with the ball body when the rotating shaft 20 rotates to enable the impact shaft 21 to do periodic reciprocating linear motion, the impact shaft 21 can do continuous knocking action on the impact shaft 29 in the process of periodic linear motion, the impact shaft 29 can continuously knock the scraper knife tool head 7 arranged in the scraper knife sleeve 25, and the scraper knife tool head 7 has knocking force to better and faster remove wall surface coatings.

In addition, for the guide rail 49, the guide rail 49 is a closed-loop rail groove formed by recessing, and the switching member 22 moves along the rail groove in the rail groove, and the spring is not required to be provided in the structure.

The shovel blade with the structure for converting rotational kinetic energy into linear kinetic energy provided by the utility model is described, and specific examples are applied to illustrate the principle and the implementation of the utility model, and the description of the examples is only used for helping to understand the utility model and the core idea. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (9)

1. The utility model provides a shovel blade with rotatory kinetic energy conversion straight line kinetic energy structure, includes the organism and sets up the shovel blade instrument head at the organism front side, its characterized in that, the shovel blade instrument head can move around relative organism, the organism includes casing, impact mechanism and is used for providing rotatory kinetic energy, impact mechanism hookup driver and received the rotatory kinetic energy that the driver provided, impact mechanism is used for converting the rotatory kinetic energy of receipt into reciprocating rectilinear motion's straight line kinetic energy to provide axial impact power to the shovel blade instrument head, make the shovel blade instrument head can forward impact motion, the rear of casing is equipped with the handle, is equipped with the extension bar between handle and the casing, the both ends of extension bar are respectively with the handle and the casing detachable of both sides are connected, the department of gripping of handle is equipped with control switch.

2. A blade with a rotary to linear kinetic energy conversion structure according to claim 1, wherein the impact mechanism includes a relatively rotatable impact shaft and a rotary shaft coupled to and driven to rotate by the driver, one of the rotary shaft and the impact shaft being provided with a guide rail, the other of the rotary shaft and the impact shaft being provided with a conversion member engaged with the guide rail, the conversion member being moved along the guide rail to reciprocate the impact shaft with respect to the rotary shaft when the rotary shaft is rotated with respect to the impact shaft.

3. The blade with the rotational kinetic energy conversion linear kinetic energy structure according to claim 2, wherein a striking shaft is provided between the striking shaft and the blade tool head, the striking shaft being provided in the housing and being movable forward and backward in the axial direction with respect to the housing, the striking shaft being adapted to receive reciprocating impact power of the striking shaft and transmit the reciprocating impact power to the blade tool head so as to cause the blade tool head to perform forward impact motion.

4. The shovel blade with the structure for converting rotational kinetic energy into linear kinetic energy according to claim 1, wherein the shovel blade tool head, the impact mechanism and the driver are sequentially arranged from front to back, so that the shell is of a rod-shaped structure, a grip is arranged at the rear of the shell, and the grip center line of the grip is parallel to the movement direction of the shovel blade tool head.

5. The blade with rotational kinetic energy to linear kinetic energy structure of claim 1 or 4, wherein the housing includes a first housing, a middle connector and a second housing, the first housing and the second housing being connected to front and rear sides of the middle connector, respectively, the driver being disposed in the second housing behind the middle connector, and the impact mechanism being disposed in the first housing in front of the middle connector.

6. The shovel blade with the structure for converting rotational kinetic energy into linear kinetic energy according to claim 3, wherein the shovel blade tool head is detachably mounted on the front side of the machine body, a shovel blade sleeve is fixed on the front side of the shell, a mounting hole for inserting a connecting rod at the rear end of the shovel blade tool head is arranged in the shovel blade sleeve, the mounting hole extends along the axis direction and penetrates through two ends of the shovel blade sleeve, a flat shovel lock catch is sleeved on the outer side of the shovel blade sleeve and can move back and forth relative to the shovel blade sleeve so as to switch between a locking position and an unlocking position, a plurality of containing holes communicated with the mounting hole are formed in the circumferential outer wall of the shovel blade sleeve, steel balls are contained in the containing holes, a clamping groove corresponding to the containing holes is formed in the outer wall of the connecting rod, the clamping groove has an extending length for the steel balls to move back and forth,

when the flat shovel lock catch moves to the locking position, the flat shovel lock catch is blocked at the outer side of the steel ball to limit the steel ball to be separated from the clamping groove; when the flat shovel lock catch moves to the unlocking position, a space is formed in the flat shovel lock catch for the steel balls to move outwards to be separated from the clamping groove;

an elastic piece is arranged between the flat shovel lock catch and the shell to enable the flat shovel lock catch to be kept at a locking position, and the striking shaft is arranged in the mounting hole.

7. The shovel blade with the rotary kinetic energy conversion linear kinetic energy structure according to claim 2, wherein the impact shaft is arranged in the rotary shaft and can move back and forth relative to the rotary shaft along the axial direction, the impact shaft and the shell are limited in relative rotation, a central hole for accommodating the impact shaft is formed in the center of the rotary shaft, the central hole extends along the axial direction and penetrates through two ends of the rotary shaft, the guide rail is a circle of rail surface arranged on the inner wall of the rotary shaft or the outer wall of the impact shaft, the impact mechanism further comprises an elastic energy storage piece which is abutted with the impact shaft, the elastic energy storage piece drives the impact shaft to move towards one side along the axial direction so as to enable the conversion piece to be abutted on the rail surface, the rail surface comprises a plurality of climbing sections and falling sections corresponding to the climbing sections, when the conversion piece passes through the climbing sections, the conversion piece drives the impact shaft to overcome the elastic force of the elastic energy storage piece to move towards one side along the axial direction, and when the conversion piece passes through the climbing sections, the elastic energy storage piece releases the elastic force and drives the impact shaft to move towards the other side opposite to the axial direction so as to provide axial impact power for the shovel blade.

8. The shovel blade with the structure for converting rotational kinetic energy into linear kinetic energy according to claim 7, wherein the driver comprises a motor, an output shaft of the motor is in transmission connection with a transmission block, the transmission block is driven by the output shaft to rotate, a plurality of transmission teeth are arranged on the transmission block, tooth grooves corresponding to the transmission teeth are arranged at the rear end of the rotating shaft, the transmission teeth are inserted into the tooth grooves, and the transmission block drives the rotating shaft to rotate when rotating.

9. The shovel blade with the rotary kinetic energy conversion linear kinetic energy structure according to claim 7, wherein the clamp spring is clamped on the inner wall of the central hole, the elastic energy storage piece is a spring, two ends of the spring are respectively abutted against the impact shaft and the clamp spring, the impact shaft, the rotation shaft and the spring are connected into a whole, the elastic force of the spring pushes one side of the impact shaft to move so that the conversion piece is abutted against the track surface, the central hole comprises a multi-stage pore channel with the diameter gradually reduced from back to front, annular step transition is arranged between every two stages of pore channels, and the track surface is arranged on the inner wall of the pore channel between the first stage pore channel and the last stage pore channel.