CN216180271U

CN216180271U - Efficient dustproof, oil-proof and wear-resistant drill shank sleeve structure

Info

Publication number: CN216180271U
Application number: CN202122939882.6U
Authority: CN
Inventors: 孔志鹏; 翟东京
Original assignee: Yongkang Jiafeng Pneumatic Tools Co ltd
Current assignee: Yongkang Jiafeng Pneumatic Tools Co ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-04-05
Anticipated expiration: 2031-11-22

Abstract

The utility model discloses a high-efficiency dustproof, oil-proof and wear-resistant drill shank sleeve structure, which belongs to the field of electric tools and comprises a sleeve body, wherein the front end of the sleeve body is connected with a clamping iron head, the rear part of the sleeve body is connected with an opening sleeve of an electric pick, the center of the sleeve body is provided with a hole for inserting a cylindrical drill rod of the pick drill rod, the hole penetrates through the sleeve body, the sleeve body is provided with an annular inner cavity with the size larger than that of the hole, and the annular inner cavity and the hole have the same axis; the cover is internal to be equipped with the fibrous circle of one or a plurality of cake form, fibrous circle center is equipped with and supplies drill rod male jack one, jack one corresponds with the hole, the internal skeleton oil blanket that still is equipped with of cover, skeleton oil blanket center is equipped with and supplies drill rod male jack two, jack two corresponds with jack one, be equipped with the restriction piece with skeleton oil blanket and fibrous circle restriction in annular inner chamber, the fibrous circle is at skeleton oil blanket front end, the fibrous circle prevents that the dust from getting into the interior fish tail skeleton oil blanket of skeleton oil blanket, make the skeleton oil blanket can play better sealed effect when the pick borer is worked, fibrous circle cooperation skeleton oil blanket makes grease proofing dustproof effect better.

Description

Efficient dustproof, oil-proof and wear-resistant drill shank sleeve structure

Technical Field

The utility model relates to the field of electric tools, in particular to a high-efficiency dustproof, oil-proof and wear-resistant drill shank sleeve structure.

Background

The electric pick is a double-insulation hand-held electric tool taking a single-phase series motor as power, has the characteristics of safety, reliability, high efficiency, convenient operation and the like, is widely applied to pipeline laying, mechanical installation, water supply and drainage facility construction, interior decoration, harbor facility construction and other construction engineering construction, and is suitable for pick borers or other appropriate accessories, such as chisels, shovels and the like, to carry out operations of crushing, chiseling, excavating, slotting, cutting and the like on concrete, masonry structures and asphalt pavements.

The head of current electric pick can insert the pick borer, the pick borer inserts on the clamping iron head of electric pick front end to rotatory and pin by the self-locking pin, the clamping iron head is connected with the drill shank cover, be equipped with O shape circle in the drill shank cover, at electric pick during operation, the pick borer shakes all around in the O shape circle in the drill shank cover, only prevent inside external dust gets into the machine by O shape circle, because the influence of operational environment dust and granule can make O shape circle lose efficacy in the short time, grease proofing dustproof effect leads to the machine life to shorten.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a high-efficiency dustproof, oil-proof and wear-resistant drill shank sleeve structure.

The technical scheme of the utility model is as follows: high-efficient dustproof grease proofing and wear-resisting drill shank sleeve structure, it includes its characterized in that:

the front end of the sleeve body is connected with a clamping iron head, the rear part of the sleeve body is connected with an opening sleeve of an electric pick, the center of the sleeve body is provided with a hole for inserting a cylindrical drill rod of a pick drill rod, the hole penetrates through the sleeve body, the sleeve body is provided with an annular inner cavity with the size larger than that of the hole, and the annular inner cavity and the hole have the same axis;

the drill rod is inserted into the first insertion hole, the first insertion hole corresponds to the hole, and the fiber ring is positioned in the annular inner cavity;

the center of the framework oil seal is provided with a second jack into which the drill rod is inserted, the second jack corresponds to the first jack, and the framework oil seal is positioned in the annular inner cavity;

and one or more limiting members which limit the framework oil seal and the fiber ring in the annular inner cavity, wherein the fiber ring is arranged at the front end of the framework oil seal.

The further optimization scheme of the utility model is as follows: the front end of the fiber ring is provided with a gasket, the center of the gasket is provided with a third insertion hole, and the third insertion hole is used for a drill rod to insert.

The further optimization scheme of the utility model is as follows: the gasket is made of metal and is attached to the fiber ring.

The further optimization scheme of the utility model is as follows: the fiber loops comprise sheep loop loops.

The further optimization scheme of the utility model is as follows: the limiting piece comprises a clamp spring, a clamp spring groove is formed in the annular inner cavity, and the clamp spring is embedded into the clamp spring groove.

The further optimization scheme of the utility model is as follows: the fiber ring and the framework oil seal are positioned in different annular steps, and the framework oil seal is attached to the fiber ring.

The further optimization scheme of the utility model is as follows: the gasket, the fiber ring, the framework oil seal are tightly attached to each other in pairs, and the gasket, the fiber ring and the framework oil seal are fixed in position only by one snap spring.

The further optimization scheme of the utility model is as follows: the first jack and the second jack are in interference fit with the drill rod.

The further optimization scheme of the utility model is as follows: the outer edge of the sleeve body is in contact with the casing of the electric pick, a circle of groove is formed in the outer edge of the sleeve body, and a sealing ring is sleeved on the groove.

The further optimization scheme of the utility model is as follows: the outer edge of the sleeve body is provided with a circle of expansion edge.

Compared with the prior art, the oil-proof and dust-proof sleeve has the advantages that the annular inner cavity is formed in the sleeve body, one or a plurality of cake-shaped fiber rings and a framework oil seal are arranged in the annular inner cavity, the framework oil seal and the fiber rings are limited in the annular inner cavity by the limiting part, the fiber rings are arranged at the front end of the framework oil seal, when a pickaxe drill rod arranged at the front end of the sleeve body is driven to move by an electric pickaxe, dust outside the fiber rings and lubricating oil on the pickaxe drill rod are isolated by the fiber rings, dust particles are prevented from entering the framework oil seal to scratch the framework oil seal, the framework oil seal and the fiber rings can achieve a better sealing effect when the pickaxe drill rod works, and the fiber rings are matched with the framework oil seal to achieve a better oil-proof and dust-proof effect.

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 illustrating the background art and 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 structural diagram of an electric pick.

Fig. 2 is a schematic structural diagram of the electric pick.

Fig. 3 is an exploded view of the electric pick.

Fig. 4 is a sectional view of the electric pick.

Fig. 5 is a partially enlarged view of a portion a of fig. 4.

In the figure: 1. an electric pick; 2. a housing; 3. clamping an iron head; 4. a large-opening damping ring; 5. a flat gasket; 6. opening the sleeve; 7. opening and sleeving a leather ring; 8. a sleeve body; 9. expanding the edge; 10. a groove; 11. a hole; 12. a small-opening damping ring; 13. a drive mechanism; 14. pick rod; 15. a seal ring; 16. a gasket; 17. fiber loops; 18. framework oil seal; 19. a clamp spring; 20. a clamp spring groove; 21. an annular inner cavity; 22. an annular step; 23. a third jack; 24. a first jack; 25. and a second jack.

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 utility model.

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 and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "inside" and "outside" are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the utility model is used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the element which is referred to must have a specific orientation, be constructed in a specific orientation and operation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

As shown in fig. 1-5, the efficient dustproof, oil-proof and wear-resistant drill shank sleeve structure includes a sleeve body 8, the sleeve body 8 is located in the casing 2 of the electric pick 1, and the sleeve body 8 is located at an opening at the front end of the casing 2.

Fig. 1 and fig. 2 show, clamping iron head 3 is connected to the front end of the cover body 8, clamping iron head 3 is used for clamping pick drill rod 14, clamping iron head 3 passes through screw fixed connection on casing 2 of electric pick 1, cover body 8 center is equipped with the cylindrical drill rod male hole 11 that supplies pick drill rod 14, hole 11 runs through the cover body 8, and the cylindrical drill rod of the pick drill rod 14 of clamping on clamping iron head 3 stretches into in electric pick 1 casing 2 to pass the hole 11 at cover body 8 center and the 13 linkages of actuating mechanism in the electric pick 1, drive pick drill rod 14 through actuating mechanism 13 and move. The structure for clamping the pick drill rod 14 by the clamping iron head 3 and the mechanism for driving the pick drill rod 14 to move by the driving mechanism 13 are the same as those of the electric pick 1 in the market.

The electric pick structure can refer to a structure in an electric pick with Chinese patent publication No. CN 113580075A.

As shown in fig. 3-5, the outer edge of the sleeve body 8 contacts with the casing 2 of the electric pick 1, the outer edge of the sleeve body 8 is provided with a circle of groove 10, the groove 10 is sleeved with a sealing ring 15, so as to prevent external gas or dust from entering the casing 2 of the electric pick 1 from the gap between the casing 2 and the sleeve body 8.

The outer fringe of the cover body 8 is equipped with a round extension border 9, the cover has a round osculum damping ring 12 on the outer fringe of the cover body 8, and is preferred, osculum damping ring 12 is the shock attenuation rubber ring, osculum damping ring 12 has elasticity, clamping iron head 3 presses osculum damping ring 12 to fix on extension border 9, osculum damping ring 12 is located electric pick 1's casing 2, and actuating mechanism 13 when electric pick 1 interior takes the pick borer 14 during the motion, osculum damping ring 12 plays the effect of shock attenuation buffering. The groove 10 is provided on the extension edge 9.

As shown in fig. 4 and 5, an annular inner cavity 21 with a size larger than that of the hole 11 is arranged on the sleeve body 8, the annular inner cavity 21 and the hole 11 share the same axis, one or more cake-shaped fiber rings 17 are arranged in the annular inner cavity 21, a first insertion hole 24 for a drill rod to be inserted is arranged in the center of each fiber ring 17, the first insertion hole 24 corresponds to the hole 11, and preferably, the number of the fiber rings 17 is one.

Preferably, the fiber loops 17 comprise sheep loop.

The front end of the fiber ring 17 is provided with a gasket 16, the center of the gasket 16 is provided with a third insertion hole 23, the third insertion hole 23 is used for inserting a drill rod, preferably, the gasket 16 is made of metal, one side of the gasket 16 is attached to the fiber ring 17, the other side of the gasket 16 is attached to the sleeve body 8, and the gasket 16 is also positioned in the annular cavity 21.

The annular inner cavity 21 is further internally provided with a framework oil seal 18, the center of the framework oil seal 18 is provided with a second insertion hole 25 for inserting a drill rod, the second insertion hole 25 corresponds to the first insertion hole 24, the fiber ring 17 is positioned at the front end of the framework oil seal 18, the framework oil seal 18 is a rubber piece, and the framework oil seal 18 has elasticity.

One or more limiting members are provided, the limiting members limit the framework oil seal 18 and the fiber ring 17 in the annular inner cavity 21, preferably, the limiting members comprise clamp springs 19, clamp spring grooves 20 are provided in the annular inner cavity 21, and the clamp springs 19 are embedded in the clamp spring grooves 20 to limit the framework oil seal 18 and the fiber ring 17 in the annular inner cavity 21.

Further, the gasket 16 and the fiber ring 17, the fiber ring 17 and the framework oil seal 18 are tightly attached to each other in pairs, and the gasket 16, the fiber ring 17 and the framework oil seal 18 are fixed in position only by one snap spring 19.

Further, an annular step 22 is arranged in the annular inner cavity 21, the annular inner cavity 21 is divided into two sections with different diameters, the diameters of the two sections of annular inner cavities 21 are sequentially increased from front to back, the fiber ring 17 and the framework oil seal 18 are located in the different annular steps 22, and the framework oil seal 18 is attached to the fiber ring 17.

A drill rod of a pick drill 14 clamped on the clamping iron head 3 sequentially penetrates through a gasket 16, a fiber ring 17 and a framework oil seal 18 to be linked with a driving mechanism 13 in the shell 2, the drill rod of the pick drill 14 is in interference fit with a first insertion hole 24 and a second insertion hole 25, and the framework oil seal 18 and the fiber ring 17 are flexible.

When the driving mechanism 13 drives the pick drill 14 to move for operation, the gasket 16 is used for blocking large-particle dust, and the fiber ring 17 prevents the dust filtered by the gasket 16 from entering the sleeve body 8, so that the dust is effectively prevented from entering the framework oil seal 18 to abrade the framework oil seal 18, and the framework oil seal 18 and the fiber ring 17 can play a better sealing effect when the pick drill 14 works. The gasket 16, the fiber ring 17 and the framework oil seal 18 are matched to ensure better oil-proof and dust-proof effects.

The rear of the cover body 8 is connected with the opening sleeve 6 of the electric pick 1, the center of the opening sleeve 6 is provided with a through hole, the through hole penetrates through the opening sleeve 6, the opening sleeve 6 is located in the shell 2 of the electric pick 1, an opening sleeve leather collar 7 is arranged between the opening sleeve 6 and the shell 2, the opening sleeve leather collar 7 is sleeved outside the opening sleeve 6, and the opening sleeve leather collar 7 is used for sealing a gap between the opening sleeve 6 and the shell 2.

The rear of opening cover 6 is equipped with two flat gaskets 5 to and be located the macrostoma damping ring 4 between two flat gaskets 5, and two flat gaskets 5 and macrostoma damping ring 4 all are located the casing 2 of electric pick 1, be equipped with cyclic annular interior edge in the casing 2 of electric pick 1, opening cover 6 presses two flat gaskets 5 and macrostoma damping ring 4 and follows upward fixed in cyclic annular, and the center of two flat gaskets 5 and macrostoma damping ring 4 all is equipped with the perforation, macrostoma damping ring 4 has elasticity, and when actuating mechanism 13 in electric pick 1 area the pick borer 14 moves, macrostoma damping ring 4 plays the effect of shock attenuation buffering.

The efficient dust-proof, oil-proof and wear-resistant drill shank sleeve structure provided by the utility model is described in detail above, and the principle and the implementation mode of the utility model are explained in the text by applying specific examples, and the description of the above examples is only used for helping to understand the utility model and the core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. High-efficient dustproof grease proofing and wear-resisting drill shank sleeve structure, it includes its characterized in that:

2. The efficient dust-proof, oil-proof and wear-resistant drill shank sleeve structure according to claim 1, wherein a gasket is arranged at the front end of the fiber ring, and a third insertion hole is formed in the center of the gasket and is used for a drill rod to insert.

3. The efficient dust, oil and wear resistant drill shank sleeve structure of claim 2, wherein the washer is made of metal and is attached to the fiber ring.

4. The efficient dust and oil repellent and wear resistant drill collar structure of claim 1, wherein the fiber loops comprise wool loops.

5. The efficient dust-proof, oil-proof and wear-resistant drill shank sleeve structure as recited in claim 1, wherein the limiting member comprises a snap spring, a snap spring groove is formed in the annular inner cavity, and the snap spring is embedded in the snap spring groove.

6. The efficient dust-proof, oil-proof and wear-resistant drill shank sleeve structure according to claim 1, wherein an annular step is arranged in the annular inner cavity, the annular inner cavity is divided into two sections with different diameters, the fiber ring and the framework oil seal are located in the different annular steps, and the framework oil seal is attached to the fiber ring.

7. The efficient dust-proof, oil-proof and wear-resistant drill shank sleeve structure according to claim 2, wherein the gasket, the fiber ring, the framework oil seal are tightly attached in pairs, and the gasket, the fiber ring and the framework oil seal are fixed in position only by one snap spring.

8. The efficient dust-proof, oil-proof and wear-resistant drill shank sleeve structure according to claim 1, wherein the first and second insertion holes are in interference fit with the drill rod.

9. The efficient dust-proof, oil-proof and wear-resistant drill shank sleeve structure as claimed in claim 1, wherein the outer edge of the sleeve body is in contact with the casing of the electric pick, a circle of groove is formed in the outer edge of the sleeve body, and a sealing ring is sleeved on the groove.

10. The efficient dust-proof, oil-proof and wear-resistant drill shank sleeve structure as claimed in claim 1 or 9, wherein the outer edge of the sleeve body is provided with a circle of extended edge.