CN218837659U

CN218837659U - Electric pick strikes cylinder commentaries on classics cover quick change structure

Info

Publication number: CN218837659U
Application number: CN202223613014.XU
Authority: CN
Inventors: 蒋刚波; 李小龙
Original assignee: Zhejiang Deshuo Technology Co ltd
Current assignee: Zhejiang Deshuo Technology Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-04-11
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses an electric pick strikes cylinder and changes cover quick change structure, including the solid fixed cylinder, cylinder and commentaries on classics cover, the cylinder with change the equal cartridge of cover in the solid fixed cylinder, it is located the front side of cylinder to change the cover, and the one end of changeing the cover inserts in the cylinder, the outer wall epirelief of changeing the cover is equipped with spacing portion, the rear side of spacing portion supports on the forward edge of cylinder, first ring groove has been seted up on the inner wall of solid fixed cylinder, joint ring I in the first ring groove, joint ring I card is in the front side of spacing portion, it prevents changeing the gasket to be equipped with between commentaries on classics cover and the solid fixed cylinder, it overlaps in changeing the cover to prevent changeing the gasket, and be located spacing portion front side, it is equipped with the bolster to prevent changeing between gasket and the spacing portion, it sticiss the bolster to prevent changeing the gasket in spacing portion, set up the second ring groove that is located first ring groove front side on the inner wall of solid fixed cylinder, joint ring II in the second ring groove, it removes forward to prevent changeing gasket front side restriction.

Description

Electric pick strikes cylinder commentaries on classics cover quick change structure

Technical Field

The utility model relates to an electric pick structure especially relates to an electric pick strikes cylinder and changes cover quick change structure.

Background

The electric pick is a hand-held electric tool widely used for pipeline laying, mechanical installation, water supply and drainage facility construction, interior decoration, harbor facility construction and other construction projects, can be used for carrying out operations such as crushing, chiseling, digging, slotting, cutting and the like on concrete, masonry structures and asphalt pavements, and generally comprises a machine shell, an air cylinder, a rotating sleeve, an impact system, a motor, a transmission system and the like which are positioned in the machine shell.

For example, the electric pick of patent CN112824054A includes: the motor provides power for the electric pick to work; the reduction box comprises a box body and a transmission mechanism at least partially arranged in the box body, and the transmission mechanism transmits the power of the motor to the impact mechanism; the impact mechanism comprises a cylinder, a piston assembly driven by the transmission mechanism, a hammer which is arranged in the cylinder and driven by the piston assembly to reciprocate, and a ram rod which is arranged in the cylinder and bears the impact of the hammer, wherein the first end of the cylinder is connected and positioned in the box body, and the second end of the cylinder, which is opposite to the first end, is provided with an electric pick chuck; the plastic shell is sleeved outside the cylinder; one end of the electric pick chuck is inserted into the cylinder and is connected with the cylinder through a pin, the cylinder is externally sleeved with a pressing sleeve accommodated in the groove, and the pressing sleeve is pressed on the pin.

The problem that current electric pick exists: because the electric pick is installed in the pick head of changeing the cover front end through the continuous striking of impact mechanism and is strikeed the operation, change the cover and can appear wearing and tearing in long-time operation in-process, perhaps impact mechanism damages, all need to dismantle the cover, current commentaries on classics cover is connected with the cylinder through the round pin axle, the round pin axle generally is tight fit chucking on changeing cover and cylinder, hardly knocks out from changeing cover and cylinder after the round pin axle chucking, it is comparatively inconvenient to make the dismouting of changeing the cover get up, and will change cover and cylinder rigid coupling together through the round pin axle, be very easily damaged by the impact in the impact operation in-process, the structure is comparatively unstable.

SUMMERY OF THE UTILITY MODEL

Based on above-mentioned commentaries on classics cover is connected with the cylinder through the round pin axle, inconvenient dismantlement to will change cover and cylinder through the round pin axle and link together firmly, it is not enough to receive impact damage etc. very easily at the impact operation in-process, the utility model provides an electric pick strikes cylinder and changes cover quick change structure.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a quick-change structure for an impact cylinder and a rotating sleeve of an electric pick comprises a fixed cylinder, a cylinder and a rotating sleeve which are fixed on a casing of the electric pick, wherein a cavity is arranged in the fixed cylinder, the front end of the fixed cylinder is provided with an opening, the cylinder and the rotating sleeve are inserted into the fixed cylinder, the rotating sleeve is positioned on the front side of the cylinder, one end of the rotating sleeve is inserted into the cylinder, the other end of the rotating sleeve extends out of the opening on the front side of the fixed cylinder for being connected with the electric pick, and the quick-change structure is characterized in that a limiting part is convexly arranged on the outer wall of the rotating sleeve, the rear side of the limiting part abuts against the front edge of the cylinder, a first annular clamping groove is arranged on the inner wall of the fixed cylinder, a first clamping ring which can elastically draw in and deform under radial stress is clamped in the first annular clamping groove, the first clamping ring is clamped on the front side of the limiting portion and matched with the air cylinder to limit axial movement of the rotating sleeve, an anti-rotation gasket used for limiting rotation of the rotating sleeve relative to the fixing sleeve is arranged between the rotating sleeve and the fixing sleeve, the anti-rotation gasket is sleeved on the rotating sleeve and located on the front side of the limiting portion, an elastic buffer is arranged between the anti-rotation gasket and the limiting portion, the anti-rotation gasket tightly presses the buffer on the limiting portion, a second annular clamping groove located on the front side of the first annular clamping groove is formed in the inner wall of the fixing sleeve, a second clamping ring which can elastically draw in and deform in the radial direction under stress is clamped in the second annular clamping groove, and the second clamping ring is clamped on the front side of the anti-rotation gasket and limits the anti-rotation gasket to move forwards to separate from the fixing sleeve.

The utility model discloses further preferred technical scheme does: the buffer piece is annular, and the buffer piece cover is located to change and is sheathe in, and the cross sectional shape of buffer piece is L shape to form and be used for dodging the dodging space of joint ring one, joint ring one is located dodges the space.

The utility model discloses further preferred technical scheme does: the buffer piece is made of NBR material.

The utility model discloses further preferred technical scheme does: the first clamping ring is a steel wire check ring.

The utility model discloses further preferred technical scheme does: and the second clamping ring is a clamping spring.

The utility model discloses further preferred technical scheme does: the anti-rotation gasket is sleeved on the anti-rotation boss, a first anti-rotation groove is formed in the side wall of the anti-rotation boss, a second anti-rotation groove is formed in the inner wall of the fixed cylinder, an inner convex portion matched with the first anti-rotation groove in a clamping mode is arranged on the inner wall of the anti-rotation gasket, an outer convex portion matched with the second anti-rotation groove in a clamping mode is arranged on the outer wall of the anti-rotation gasket, a first inlet for the inner convex portion to enter the first anti-rotation groove is formed in the front side wall of the anti-rotation boss, and a second inlet for the outer convex portion to enter the second anti-rotation groove is formed in the front side wall of the fixed cylinder.

The utility model discloses further preferred technical scheme does: the anti-rotation boss is sleeved with two anti-rotation gaskets.

The utility model discloses further preferred technical scheme does: the inner wall of the fixed cylinder is provided with a step II, the outer wall of the cylinder is provided with a step III matched with the step II, and the step III is tightly pressed on the step II by the rotary sleeve.

The utility model discloses further preferred technical scheme does: a third annular clamping groove is formed in the outer wall of the rotating sleeve, a sealing ring is connected in the third annular clamping groove in a clamping mode, and the sealing ring abuts against the inner wall of the air cylinder to seal a gap between the rotating sleeve and the air cylinder.

The utility model discloses further preferred technical scheme does: the sealing ring is an X-shaped sealing ring.

Compared with the prior art, the utility model has the advantages that can be through the radial application of force of joint ring two, make its elasticity draw in the deformation and break away from second ring groove, thereby make that it can not unrestricted by the spacer and buffer to prevent changeing, the rethread is to the radial application of force of joint ring one, make a joint ring elasticity draw in the deformation and break away from first ring groove, it is spacing not carrying out spacing to spacing portion, make the swivel sleeve can take off from the solid fixed cylinder, install the swivel sleeve on the solid fixed cylinder through joint ring one and joint ring two, compare and hardly knock out after the round pin axle compresses tightly, install the swivel sleeve through joint ring one and joint ring two and be convenient for swivel sleeve quick assembly disassembly.

And prevent changeing and be equipped with elastic bolster between gasket and the spacing portion, prevent changeing the gasket and sticising the bolster in spacing portion, the bolster presss from both sides and can cushion the ascending vibration of commentaries on classics cover axial between preventing changeing the gasket and changeing the cover, reduces the damage that the impact operation brought to there is compression after the bolster installation, makes changeing the cover more tightly pressed on the leading edge of cylinder, makes the installation of changeing the cover more stable.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

Fig. 1 is a schematic overall structure diagram of an electric pick;

fig. 2 is an overall cut-away view of the electric pick;

FIG. 3 is an overall cut-away view of the structure of the present invention;

FIG. 4 is a partially exploded view of the structure of the present invention;

FIG. 5 is a schematic structural view of the swivel sleeve;

FIG. 6 is a schematic structural view of the fixed cylinder;

fig. 7 is a schematic structural view of an X-shaped seal ring.

In the figure: 1. an electric pick shell; 2. a motor; 3. a transmission assembly; 4. an impact assembly; 5. a cylinder; 6. a fixed cylinder; 7. rotating the sleeve; 8. a step II; 9. a step III; 10. a third ring-shaped clamp groove; 11. a seal ring; 12. a limiting part; 13. a first ring-shaped clamping groove; 14. a clamping ring I; 15. a buffer member; 16. avoiding a space; 17. an anti-rotation spacer; 18. a second clamping ring; 19. a second annular card slot; 20. an outer convex portion; 21. an inner convex portion; 22. an anti-rotation boss; 23. a first anti-rotation slot; 24. an inlet I; 25. a second anti-rotation slot; 26. and a second inlet.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the invention.

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

As shown in fig. 1-7, the electric pick includes an electric pick casing 1, a fixed cylinder 6, a cylinder 5, a rotating sleeve 7, a motor 2, a transmission assembly 3 and an impact assembly 4, the fixed cylinder 6, the cylinder 5, the rotating sleeve 7, the motor 2, the transmission assembly 3 and the impact assembly 4 are all installed in the electric pick casing 1, the fixed cylinder 6 is fixed on the electric pick casing 1, the cylinder 5 and the rotating sleeve 7 are installed on the fixed cylinder 6, the impact assembly 4 is installed in the cylinder 5, the motor 2 is connected to one end of the transmission assembly 3, the impact assembly 4 is connected to the other end of the transmission assembly 3, the transmission assembly 3 transmits the power of the motor 2 to the impact assembly 4, and the impact assembly 4 performs reciprocating impact to transmit the impact force to a pick head installed in the rotating sleeve 7 for operation.

The fixed cylinder 6 is internally provided with a cavity, the front end of the fixed cylinder is provided with an opening, the fixed cylinder 6 is of a long straight cylinder structure, and the two ends of the fixed cylinder are communicated.

The cylinder 5 and the rotating sleeve 7 are inserted in the fixed cylinder 6, the rotating sleeve 7 is positioned on the front side of the cylinder 5, and the transmission assembly 3 can be connected with the impact assembly 4 in the cylinder 5 from an opening at the rear end of the fixed cylinder 6.

As shown in fig. 3, one end of the rotating sleeve 7 is inserted into the cylinder 5, and the other end of the rotating sleeve 7 extends out of the opening at the front side of the fixed cylinder 6 for connecting with a pick.

The outer wall epirelief of commentaries on classics cover 7 is equipped with spacing portion 12, the shape of spacing portion 12 and the inner chamber shape phase-match of fixed cover, the rear side of spacing portion 12 supports on the leading edge of cylinder 5, first ring groove 13 has been seted up on the inner wall of fixed cylinder 6, it is radial to have blocked joint ring one 14 that the atress can draw in the deformation in the elasticity in first ring groove 13, a clamping ring one 14 card is in the front side of spacing portion 12, clamping ring one 14 and cylinder 5 press from both sides the axial displacement of both sides restriction commentaries on classics cover 7 around spacing portion 12, make commentaries on classics cover 7 install on fixed cylinder 6.

Preferably, the first snap ring 14 is a steel wire retainer ring, and the steel wire retainer ring is a non-closed ring structure with a notch.

Be equipped with between commentaries on classics cover 7 and the solid fixed cylinder 6 and be used for restricting commentaries on classics cover 7 relative solid fixed cylinder 6 pivoted and prevent changeing gasket 17, prevent changeing gasket 17 and be annular and overlap on commentaries on classics cover 7, prevent changeing gasket 17 and be located the front side of spacing portion 12, prevent being equipped with elastic bolster 15 between changeing gasket 17 and the spacing portion 12, prevent changeing gasket 17 and sticiss bolster 15 on spacing portion 12, spacing portion 12 does not contact with prevent changeing gasket 17, set up the second annular draw-in groove 19 that is located first annular draw-in groove 13 front side on the inner wall of solid fixed cylinder 6, the joint has radially atress ability elastic draw in the second of deformation joint ring 18 in the second annular draw-in groove 19, joint ring second 18 card is prevented changeing gasket 17 front side restriction and is prevented changeing gasket 17 and is moved forward and is kept away from gu fixed cylinder 6, will prevent changeing gasket 17 and cushion 15 fixed mounting in gu fixed cylinder 6.

Preferably, the buffer 15 is made of NBR material, the second snap ring 18 is a snap spring, and the snap spring is of a non-closed loop structure with a notch.

When the rotating sleeve 7 needs to be detached from the fixed cylinder 6, only radial force needs to be applied to the clamping ring II 18 first to enable the clamping ring II 18 to be elastically folded and deformed and to be separated from the second annular clamping groove 19, so that the anti-rotation gasket 17 and the buffer piece 15 can be sequentially taken out without limitation, the clamping ring I14 is elastically folded and deformed and is separated from the first annular clamping groove 13 by applying radial force to the clamping ring I14, the limiting part 12 is not limited, the rotating sleeve 7 can be taken down from the fixed cylinder 6, the rotating sleeve 7 is installed on the fixed cylinder 6 through the clamping ring I14 and the clamping ring II 18 and is difficult to knock out after pin shaft compression, and the rotating sleeve 7 is installed through the clamping ring I14 and the clamping ring II 18 to facilitate rapid detachment of the rotating sleeve 7.

After the rotating sleeve 7 is taken out, the air cylinder 5 can also be taken out from the fixed cylinder 6.

And prevent changeing and be equipped with elastic bolster 15 between gasket 17 and the spacing portion 12, prevent changeing gasket 17 and sticis bolster 15 on spacing portion 12, bolster 15 presss from both sides and can cushion commentaries on classics cover 7 ascending vibration in the axial between gasket 17 and commentaries on classics cover 7, reduces the damage that the impact operation brought to there is compression after bolster 15 installs, makes commentaries on classics cover 7 more tightly pressed on the leading edge of cylinder 5, makes the installation of commentaries on classics cover 7 more stable.

The first clamping ring 14 and the second clamping ring 18 can elastically deform and close up in the radial direction when stressed in the radial direction, so that the outer diameters of the first clamping ring 14 and the second clamping ring 18 can be reduced, and the first clamping ring 13 and the second clamping ring 19 can be separated from each other.

Preferably, the buffer member 15 is annular, the buffer member 15 is sleeved on the rotating sleeve 7, the cross section of the buffer member 15 is L-shaped, an avoiding space 16 for avoiding the first clamping ring 14 is formed on one side, facing the limiting portion 12, of the L-shaped buffer member 15, and the first clamping ring 14 is located in the avoiding space 16, so that interference generated when the first clamping ring 14 and the buffer member 15 are installed is prevented, and the whole installation is prevented from being influenced.

As shown in fig. 4-6, preferably, an anti-rotation boss 22 is fixed on the front side of the rotation sleeve 7 located at the limiting portion 12, a step-one transition is provided between the front side of the anti-rotation boss 22 and the outer wall of the rotation sleeve 7, the anti-rotation gasket 17 is sleeved on the anti-rotation boss 22, a first anti-rotation groove 23 is formed on the side wall of the anti-rotation boss 22, a second anti-rotation groove 25 is formed on the inner wall of the fixed cylinder 6, an inner convex portion 21 matched with the first anti-rotation groove 23 in a clamping manner is provided on the inner wall of the anti-rotation gasket 17, an outer convex portion 20 matched with the second anti-rotation groove 25 in a clamping manner is provided on the outer wall of the anti-rotation gasket 17, an inlet one 24 for the inner convex portion 21 to enter the first anti-rotation groove 23 is formed on the front side wall of the anti-rotation boss 22, an inlet two 26 for the outer convex portion 20 to enter the second anti-rotation groove 25 is provided on the front side wall of the fixed cylinder 6, and when the inner convex portion 21 and the outer convex portion 20 of the anti-rotation gasket 17 are respectively clamped in the first anti-rotation groove 23 and the second anti-rotation groove 25, the fixed cylinder 7 is limited by the anti-rotation gasket 17.

The inner wall of the anti-rotation gasket 17 is provided with four annular array inner convex parts 21, the outer wall of the anti-rotation gasket 17 is provided with four annular array outer convex parts 20, the rotating sleeve 7 is provided with first anti-rotation grooves 23 with the same number as the inner convex parts 21, and the fixed cylinder 6 is provided with second anti-rotation grooves 25 with the same number as the outer convex parts 20.

Two anti-rotation gaskets 17 are arranged between the second clamping ring 18 and the buffer piece 15, and the two anti-rotation gaskets 17 are all sleeved on the anti-rotation bosses 22.

In addition, a second step 8 is arranged on the inner wall of the fixed cylinder 6, a third step 9 matched with the second step 8 is arranged on the outer wall of the air cylinder 5, the third step 9 is tightly pressed on the second step 8 by the rotating sleeve 7, and the second step 8 and the third step 9 are matched to limit the backward movement of the air cylinder 5 relative to the fixed cylinder 6.

In addition, a third annular clamping groove 10 is formed in the outer wall of the rotating sleeve 7, a sealing ring 11 is clamped in the third annular clamping groove 10, and the sealing ring 11 abuts against the inner wall of the air cylinder 5 to seal a gap between the rotating sleeve 7 and the air cylinder 5.

As shown in fig. 7, preferably, the sealing ring 11 is an X-shaped sealing ring 11, and the X-shaped sealing ring 11 has high toughness and durability, so that the service life of the sealing ring is longer, and a better sealing effect is achieved.

It is right above the utility model provides an electric pick strikes cylinder commentaries on classics cover quick change structure and introduces, and it is right to have used specific individual example here the utility model discloses a principle and embodiment have explained, and the description of above embodiment only is used for helping to understand the utility model discloses and core thought. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. A quick-change structure for an impact cylinder and a rotating sleeve of an electric pick comprises a fixed cylinder, a cylinder and a rotating sleeve which are fixed on a casing of the electric pick, wherein a cavity is arranged in the fixed cylinder, the front end of the fixed cylinder is provided with an opening, the cylinder and the rotating sleeve are inserted into the fixed cylinder, the rotating sleeve is positioned on the front side of the cylinder, one end of the rotating sleeve is inserted into the cylinder, the other end of the rotating sleeve extends out of the opening on the front side of the fixed cylinder for being connected with the electric pick, and the quick-change structure is characterized in that a limiting part is convexly arranged on the outer wall of the rotating sleeve, the rear side of the limiting part abuts against the front edge of the cylinder, a first annular clamping groove is arranged on the inner wall of the fixed cylinder, a first clamping ring which can elastically draw in and deform under radial stress is clamped in the first annular clamping groove, the first clamping ring is clamped on the front side of the limiting portion and matched with the air cylinder to limit axial movement of the rotating sleeve, an anti-rotation gasket used for limiting rotation of the rotating sleeve relative to the fixing sleeve is arranged between the rotating sleeve and the fixing sleeve, the anti-rotation gasket is sleeved on the rotating sleeve and located on the front side of the limiting portion, an elastic buffer is arranged between the anti-rotation gasket and the limiting portion, the anti-rotation gasket tightly presses the buffer on the limiting portion, a second annular clamping groove located on the front side of the first annular clamping groove is formed in the inner wall of the fixing sleeve, a second clamping ring which can elastically draw in and deform in the radial direction under stress is clamped in the second annular clamping groove, and the second clamping ring is clamped on the front side of the anti-rotation gasket and limits the anti-rotation gasket to move forwards to separate from the fixing sleeve.

2. The quick-change structure for the rotary sleeve of the impact cylinder of the electric pick according to claim 1, wherein the buffer member is annular, the buffer member is sleeved on the rotary sleeve, the cross-sectional shape of the buffer member is L-shaped to form an avoiding space for avoiding the first snap ring, and the first snap ring is located in the avoiding space.

3. The quick-change structure for the impact cylinder sleeve of the electric pick according to claim 1 or 2, wherein the buffer member is made of NBR material.

4. The quick-change structure for the impact cylinder sleeve of the electric pick according to claim 1, wherein the first snap ring is a steel wire retainer ring.

5. The electric pick impact cylinder rotary sleeve quick-change structure according to claim 1, wherein the second snap ring is a snap spring.

6. The rotary sleeve quick-change structure of the impact cylinder of the electric pick according to claim 1, wherein an anti-rotation boss is fixed on the front side of the rotary sleeve at the limiting portion, a step-one transition is provided between the front side of the anti-rotation boss and the outer wall of the rotary sleeve, an anti-rotation gasket is sleeved on the anti-rotation boss, a first anti-rotation groove is provided on the side wall of the anti-rotation boss, a second anti-rotation groove is provided on the inner wall of the fixed cylinder, an inner convex portion in clamping fit with the first anti-rotation groove is provided on the inner wall of the anti-rotation gasket, an outer convex portion in clamping fit with the second anti-rotation groove is provided on the outer wall of the anti-rotation gasket, a first inlet through which the inner convex portion enters the first anti-rotation groove is provided on the front side wall of the anti-rotation boss, and a second inlet through which the outer convex portion enters the second anti-rotation groove is provided on the front side wall of the fixed cylinder.

7. The rotary sleeve quick-change structure for the impact cylinder of the electric pick as claimed in claim 6, wherein two anti-rotation gaskets are sleeved on the anti-rotation bosses.

8. The rotary sleeve quick-change structure of an impact cylinder of an electric pick as claimed in claim 1, wherein the inner wall of the fixed cylinder is provided with a second step, the outer wall of the cylinder is provided with a third step which is matched with the second step, and the rotary sleeve presses the third step against the second step.

9. The quick-change structure for the rotary sleeve of the impact cylinder of the electric pick according to claim 1, wherein a third annular clamping groove is formed in an outer wall of the rotary sleeve, a sealing ring is clamped in the third annular clamping groove, and the sealing ring abuts against an inner wall of the cylinder to seal a gap between the rotary sleeve and the cylinder.

10. The electric pick impact cylinder rotary sleeve quick-change structure according to claim 9, wherein the seal ring is an X-shaped seal ring.