CN118029483A - Bucket tooth and bucket tooth assembly - Google Patents

Abstract

The invention discloses a bucket tooth and a bucket tooth assembly, which relate to the technical field of excavating machinery, and have the technical scheme that the bucket tooth comprises tooth tips, wherein two tip blocks are arranged at intervals at the working end of each tooth tip, coaxial through holes are formed in the two tip blocks, threads are formed on the inner wall of each through hole, limit posts are screwed in the through holes in a matched mode, each limit post is of a cylindrical structure with one end being a spherical head, and along with the screwing of the limit post, the spherical heads of the two limit posts are mutually close to each other between the two tip blocks; the roller is rotatably arranged between the two tip blocks, the bowl-shaped embedded grooves are formed in the two side faces of the roller, the spherical heads of the limiting columns are in clearance fit with the embedded grooves, and the roller can axially displace along the roller. The bucket tooth can reduce tooth tip sliding friction, reduce abrasion, improve service life, and the roller can be replaced independently, so that the bucket tooth is convenient to maintain, and meanwhile, the self-cleaning function is realized between the roller and the limiting column, so that the conditions of shell clamping and unsmooth rolling can be avoided.

Description

Bucket tooth and bucket tooth assembly

Technical Field

The invention relates to the technical field of excavating machinery, in particular to a bucket tooth and a bucket tooth assembly.

Background

The bucket tooth is one of important parts of the excavating machinery, and is directly contacted with an excavated object, and is subjected to large impact force and abrasion force, so that the bucket tooth is required to have high strength and abrasion resistance. At present, most of common bucket tooth tip structures are integrated structures, and most of working ends of tooth tips are conical or wedge-shaped and are used for cutting and prying objects to be excavated. The bucket tooth point of this kind of structure is mostly sliding friction between during operation and the excavation thing, and this kind of friction form is the biggest to the degree of wear of point, leads to the point to need change more frequently, has increased cost and maintenance time, and integral type bucket tooth point needs whole dismantlement and change when changing moreover, and the operation is inconvenient and extravagant great.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a bucket tooth and a bucket tooth assembly, wherein the bucket tooth is provided with a detachable tooth tip, the working end of the tooth tip is provided with a roller, so that sliding friction can be reduced, abrasion is reduced, the service life is prolonged, the roller can be independently replaced, the maintenance is convenient, and meanwhile, a self-cleaning function is provided between the roller and a limiting column, so that the conditions of shell clamping and unsmooth rolling can be avoided.

The technical aim of the invention is realized by the following technical scheme: the bucket tooth comprises tooth tips, wherein two tip blocks are arranged at intervals at the working ends of the tooth tips, coaxial through holes are formed in the two tip blocks, threads are formed in the inner walls of the through holes, limit posts are screwed into the through holes in a matched mode, the limit posts are of cylindrical structures with spherical heads at one ends, and along with the screwing of the limit posts, the spherical heads of the two limit posts are mutually close to each other between the two tip blocks;

The two tip blocks are rotatably provided with rollers, bowl-shaped embedded grooves are formed in two side faces of each roller, the spherical heads of the limiting columns are in clearance fit with the embedded grooves, and the rollers can axially displace along the rollers.

In some embodiments, the two through openings are subjected to necking treatment at one end, which is close to each other, of the two through openings, and the end is matched with the cambered surface of the spherical head of the limiting column, so that the limiting column is limited, and the limiting column cannot thoroughly penetrate through the through openings.

In some embodiments, the end of the limiting post away from the spherical head is provided with a first blind hole.

In some embodiments, a plugging block is screwed into the through hole in a matched thread mode, and the plugging block abuts against the limit post after being screwed in.

In some embodiments, a second blind hole is formed in one side, away from the limiting post, of the blocking block.

In some embodiments, the working end of the tooth tip is provided with a mounting groove, the two tip blocks are respectively positioned at two sides of the mounting groove, a scraping plate is arranged in the mounting groove, and the scraping plate and the roller are arranged at intervals.

In some embodiments, two groups of limiting strips are adjustably arranged on the scraping plate, and the two groups of limiting strips can respectively extend into gaps between two sides of the roller and the two tip blocks.

In some embodiments, the scraping plate is provided with a row of threaded holes, the limit bar is correspondingly provided with a row of second through holes, and bolts are screwed into the threaded holes and the second through holes which are aligned with each other to fix the limit bar on the scraping plate.

A tooth assembly comprising a tooth as in any one of the embodiments above;

still include the toothholder, the centre gripping groove has been seted up to the one end of toothholder, and the other end is provided with the plug, the slot has been seted up to the one end that its operation end was kept away from to the tooth point, the slot with the plug grafting cooperation is fixed through the connecting piece.

In some embodiments, the tooth tip is provided with a first through hole penetrating through the slot, the plug is provided with a third through hole penetrating through, and the third through hole and the first through hole are mutually aligned;

The connecting piece comprises a bolt and a clamp spring, an annular groove is formed in the outer side wall of the bolt in a surrounding mode, the clamp spring is embedded in the third through hole, the bolt penetrates through the first through hole, the clamp spring and the third through hole at the same time, and the clamp spring is hooped at the annular groove of the bolt.

In summary, the invention has the following beneficial effects:

According to the invention, the roller is arranged at the working end of the bucket tooth, so that most of sliding friction between the tooth tip and an excavated object is converted into rolling friction, thereby greatly reducing abrasion of the tooth tip, reducing replacement frequency of the tooth tip, and improving service life and working efficiency of the bucket tooth.

The roller can be replaced independently, the position of the roller is at the working end of the tooth tip, the position is the most vulnerable position, the replaceable structure can greatly save replacement materials, only the roller is needed to be replaced, the whole tooth tip is not needed to be replaced, the cost and the maintenance time are reduced, and the operation is convenient.

According to the invention, the idler wheel is positioned through the two detachable limit posts, the limit posts are arranged on the tip block in a threaded manner, and the limit posts can be adjusted or detached in a screwing manner, so that the adjustment or disassembly of the tightness of the idler wheel is realized, and the adaptability and the flexibility of the bucket teeth are improved.

The adaptive end of the limit post and the roller is similar to a joint of a human, one end of the limit post is a spherical head, a bowl-shaped embedded groove is formed in a position corresponding to the roller, and the bowl-shaped embedded groove are matched with each other, so that the limit post and the roller can realize rolling positioning, rotating and mounting, a group of structures similar to a medicine pounding mortar are formed, sundry scraps can be easily ground along with rolling of the roller when entering a gap between the embedded groove and the spherical head, and therefore the situation that the roller is blocked and does not roll smoothly is avoided, and the self-cleaning function of bucket teeth is realized.

Drawings

FIG. 1 is an overall block diagram (from a top view) of the present invention;

FIG. 2 is a split block diagram (from a top view) of the present invention;

FIG. 3 is a split block diagram (axonometric view) of the present invention;

FIG. 4 is a split construction view of the tooth tip portion of the present invention;

FIG. 5 is an assembled cross-sectional view of the tooth tip portion of the present invention (with each stop bar not extending between the tip block and the roller);

FIG. 6 is an assembled cross-sectional view of the tooth tip portion of the present invention (with one side stop bar extending between the tip block and the roller);

fig. 7 is an assembled sectional view of the tooth tip portion of the present invention (with the limit bar on the other side extending between the tip block and the roller).

In the figure: 1. tooth tips; 101. a slot; 102. a first through hole; 103. a mounting groove; 104. a tip block; 105. a through hole; 106. a limit column; 107. a first blind hole; 108. a block; 109. a second blind hole; 110. a roller; 111. an embedding groove; 112. a scraper; 113. a limit bar; 114. a second through hole; 115. a bolt; 116. a threaded hole; 2. a tooth holder; 201. a clamping groove; 202. a plug; 203. a third through hole; 3. a plug pin; 301. an annular groove; 302. and (5) clamping springs.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

The working end of the tooth tip 1 of the bucket tooth is used as a vulnerable part and needs to be replaced frequently, and the traditional integrally fixed type working end structure of the tooth tip 1 mostly has sliding friction between the working end structure and an excavated object, so that the abrasion degree of the friction form on the tooth tip 1 is the greatest, and the tooth tip 1 needs to be replaced more frequently.

1-7, A tooth is characterized in that: the tooth tip comprises a tooth tip 1, two tip blocks 104 are arranged at intervals at the working end of the tooth tip 1, coaxial through holes 105 are formed in the two tip blocks 104, threads are formed in the inner wall of each through hole 105, limit columns 106 are screwed into the through holes 105 in a matched mode, each limit column 106 is of a cylindrical structure with one end being a spherical head, and along with the screwing of the limit column 106, the spherical heads of the two limit columns 106 are mutually close to each other between the two tip blocks 104;

A roller 110 is rotatably arranged between the two tip blocks 104, bowl-shaped embedded grooves 111 are formed in two side faces of the roller 110, the spherical heads of the limiting columns 106 are in clearance fit with the embedded grooves 111, and the roller 110 can axially displace along the roller 110.

The invention changes the sliding friction between the tooth tip 1 and the excavated object into rolling friction by arranging the idler wheel 110 at the working end of the bucket tooth, thereby greatly reducing the abrasion of the tooth tip 1 and reducing the replacement frequency of the tooth tip 1, the idler wheel 110 of the invention can be independently replaced, the position of the idler wheel 110 is at the working end of the tooth tip 1, the position is the most vulnerable position, the replaceable structure can greatly save replacement materials, only the idler wheel 110 needs to be replaced without replacing the whole tooth tip 1, the idler wheel 110 of the invention is positioned by two detachable limit posts 106, the limit posts 106 are arranged on the tip block 104 in a threaded manner, the limit posts 106 can be adjusted or detached in a screwing manner, thereby realizing the adjustment or disassembly of the tightness of the idler wheel 110, the limit posts 106 and the adapting end of the idler wheel 110 are similar to human joints, one end of the limit posts 106 is a spherical head, the bowl-shaped embedded groove 111 is arranged at the corresponding position of the idler wheel 110, the two are matched with each other, the two are not only in rolling positioning and rotating installation, but also a group of impurity can be easily embedded into the spherical head 110 along with the grinding gap between the grinding cup, the grinding cup is avoided, the clearance between the two grinding cup bodies can be easily replaced, the grinding cup 110 can be easily replaced, the clearance between the grinding cup 110 and the grinding cup is reduced, the grinding cup is easy, the abrasion can be reduced, the friction between the grinding cup 110 is easy, the grinding contact between the grinding cup and the grinding cup is easy, and the grinding contact can be realized, the grinding contact between the grinding cup is easy, and the grinding contact is easy, and the grinding contact with the grinding contact is easy and the grinding, and the grinding contact is can be broken, and the grinding the impurity is easy and the grinding contact is has the grinding cup, to ensure that the roller 110 is always smooth in operation.

In some embodiments, as shown in fig. 4-7, the end, close to each other, of the two through openings 105 is subjected to necking treatment, and the end is matched with the cambered surface of the spherical head of the limiting post 106, so that the limiting post 106 is limited, and the limiting post 106 cannot thoroughly penetrate through the through openings 105, so that stable installation of the limiting post 106 is ensured.

In some embodiments, as shown in fig. 4, a first blind hole 107 is formed at an end of the limiting post 106 away from the spherical head, and the first blind hole 107 is a hexagonal blind hole and can be screwed by means of an allen wrench.

In some embodiments, as shown in fig. 4-7, the through hole 105 is further screwed with a plugging block 108 in a matching way, the plugging block 108 abuts against the limit post 106 after being screwed in, and the plugging block 108 is used for reinforcing the installation of the limit post 106 and playing a role in protecting the limit post 106 from loosening and falling out.

In some embodiments, as shown in fig. 4, a second blind hole 109 is formed on a side of the plugging block 108 away from the limiting post 106, and the second blind hole 109 is a hexagonal blind hole and can be screwed by means of an allen wrench.

In some embodiments, as shown in fig. 4-7, the working end of the tooth tip 1 is provided with a mounting groove 103, two tip blocks 104 are respectively located at two sides of the mounting groove 103, a scraping plate 112 is arranged in the mounting groove 103, the scraping plate 112 and the roller 110 are arranged at intervals, the scraping plate 112 is used for scraping impurities such as soil on the surface of the roller 110, the surface of the roller 110 is ensured to be clean, and therefore the rolling smoothness of the roller 110 is ensured.

In some embodiments, as shown in fig. 4-7, two sets of limiting strips 113 are adjustably disposed on the scraper 112, the two sets of limiting strips 113 can respectively extend into the gaps between two sides of the roller 110 and the two tip blocks 104, so as to adjust the gap width between the roller 110 and the tip blocks 104, as shown in fig. 6-7, when one set of limiting strips 113 extends into the gap between the roller 110 and the tip blocks 104, the side gap is widened, and the gap on the other side is narrowed, at the moment, the gap between the other side of the roller 110 and the tip blocks 104 can grind particles with smaller granularity, so as to pertinently grind the small-granularity debris particles clamped between the roller 110 and the tip blocks 104, and as the roller 110 rolls, the side surface of the roller 110 can also be scratched and cleaned by means of the limiting strips 113.

In some embodiments, as shown in fig. 6-7, the scraper 112 is provided with a row of threaded holes 116, the limit bar 113 is correspondingly provided with a row of second through holes 114, and the limit bar 113 is fixed on the scraper 112 by screwing bolts 115 into the mutually aligned threaded holes 116 and the second through holes 114.

A tooth assembly comprising a tooth according to any one of the embodiments described above;

Still include toothholder 2, clamping groove 201 has been seted up to toothholder 2's one end, and the other end is provided with plug 202, and slot 101 has been seted up to the one end that its operation end was kept away from to tooth point 1, and slot 101 and plug 202 grafting cooperation are fixed through the connecting piece, can come to centre gripping whole bucket tooth subassembly on the scraper bowl of excavator with the help of clamping groove 201.

In some embodiments, the tooth tip 1 is provided with a first through hole 102 penetrating through the slot 101, the plug 202 is provided with a third through hole 203 penetrating through, and the third through hole 203 is aligned with the first through hole 102;

The connecting piece comprises a bolt 3 and a clamp spring 302, an annular groove 301 is formed in the outer side wall of the bolt 3 in a surrounding mode, the clamp spring 302 is embedded in the third through hole 203, the bolt 3 simultaneously penetrates through the first through hole 102, the clamp spring 302 and the third through hole 203, and the clamp spring 302 is hooped at the annular groove 301 of the bolt 3.

During installation, firstly, the clamp spring 302 is embedded in the third through hole 203, then the slot 101 of the tooth tip 1 is aligned with the plug 202 of the tooth holder 2, and the tooth tip 1 is inserted into the tooth holder 2, so that the first through hole 102 and the third through hole 203 are aligned with each other; then the bolt 3 simultaneously penetrates through the first through hole 102, the clamp spring 302 and the third through hole 203 until the clamp spring 302 is hooped at the annular groove 301 of the bolt 3, so that the tooth tip 1 and the tooth base 2 are fixedly connected; finally, the clamping groove 201 of the tooth holder 2 is clamped on the bucket of the excavating machine, and the installation of the bucket tooth assembly is completed. When the bucket tooth assembly is disassembled, only the free end of the bolt 3 is required to be knocked along the axial direction of the bolt, and when the bolt 3 is knocked out, the tooth tip 1 and the tooth seat 2 can be separated, so that the bucket tooth assembly is disassembled. The bucket tooth assembly is simple in structure and convenient to assemble and disassemble.

The invention changes most sliding friction between the tooth tip 1 and the excavated object into rolling friction by arranging the roller 110 at the working end of the bucket tooth, thereby greatly reducing the abrasion of the tooth tip 1, reducing the replacement frequency of the tooth tip 1 and improving the service life and working efficiency of the bucket tooth, the roller 110 can be independently replaced, the position of the roller 110 is at the working end of the tooth tip 1 and is the most vulnerable position, the replacement material can be greatly saved by adopting the replaceable structure, only the roller 110 needs to be replaced, the whole tooth tip 1 does not need to be replaced, the cost and maintenance time are reduced, the operation is convenient, the roller 110 is positioned by the two detachable limit posts 106, the limit posts 106 are arranged on the tip block 104 in a threaded manner, the limit column 106 can be adjusted or detached in a screwing mode, so that the adjustment or disassembly of the tightness of the roller 110 is realized, the adaptability and flexibility of the bucket teeth are improved, the adaptive end of the limit column 106 and the roller 110 is similar to a joint of a human being, one end of the limit column 106 is a spherical head, a bowl-shaped embedded groove 111 is formed in a corresponding position of the roller 110, the two parts are matched to realize rolling positioning and rotation installation, a group of structures similar to a medicine pounding mortar are formed, sundry scraps can be easily ground along with rolling of the roller 110 when entering a gap between the embedded groove 111 and the spherical head, the situation that the roller 110 is blocked and does not roll smoothly is avoided, and the self-cleaning function of the bucket teeth is realized.

The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.

Claims (10)

1. A tooth, characterized in that:

The novel tooth comprises tooth tips (1), two tip blocks (104) are arranged at intervals at the working ends of the tooth tips (1), coaxial through holes (105) are formed in the two tip blocks (104), threads are formed in the inner walls of the through holes (105), limit columns (106) are screwed into the through holes (105) in a matched mode, the limit columns (106) are of cylindrical structures with spherical heads at one ends, and along with the screwing of the limit columns (106), the spherical heads of the two limit columns (106) are mutually close to each other between the two tip blocks (104);

The two tip blocks (104) are rotatably provided with rollers (110), bowl-shaped embedded grooves (111) are formed in two side surfaces of each roller (110), the spherical heads of the limiting columns (106) are in clearance fit with the embedded grooves (111), and the rollers (110) can axially displace along the rollers.

2. A tooth as defined in claim 1, wherein: two one ends of the through openings (105) close to each other are subjected to necking treatment, the ends are matched with cambered surfaces of the spherical heads of the limiting columns (106), and the limiting columns (106) are limited, so that the limiting columns (106) cannot thoroughly penetrate through the through openings (105).

3. A tooth as defined in claim 1, wherein: one end of the limiting column (106) far away from the spherical head is provided with a first blind hole (107).

4. A tooth as defined in claim 1, wherein: and a plugging block (108) is screwed into the through hole (105) in a matched thread manner, and the plugging block (108) abuts against the limiting column (106) after being screwed in.

5. A tooth as in claim 4, wherein: and a second blind hole (109) is formed in one side, away from the limiting column (106), of the plugging block (108).

6. A tooth as defined in claim 1, wherein: the working end of the tooth tip (1) is provided with a mounting groove (103), the two tip blocks (104) are respectively positioned on two sides of the mounting groove (103), a scraping plate (112) is arranged in the mounting groove (103), and the scraping plate (112) and the roller (110) are arranged at intervals.

7. A tooth as defined in claim 6, wherein: two groups of limit bars (113) are arranged on the scraping plate (112) in an adjustable mode, and the two groups of limit bars (113) can extend into gaps between two sides of the roller (110) and the two tip blocks (104) respectively.

8. A tooth as defined in claim 7, wherein: the scraper blade (112) is provided with a row of threaded holes (116), the limiting strip (113) is correspondingly provided with a row of second through holes (114), and bolts (115) are screwed into the threaded holes (116) and the second through holes (114) which are mutually aligned to fix the limiting strip (113) on the scraper blade (112).

9. A bucket tooth assembly, characterized in that:

comprising a tooth as claimed in any one of claims 1 to 8;

Still include toothholder (2), centre gripping groove (201) have been seted up to the one end of toothholder (2), and the other end is provided with plug (202), slot (101) have been seted up to the one end that its operation end was kept away from to tooth point (1), slot (101) with plug (202) grafting cooperation is fixed through the connecting piece.

10. A tooth assembly as set forth in claim 9 wherein: a first through hole (102) penetrating through the slot (101) is formed in the tooth tip (1), a third through hole (203) is formed in the plug (202) in a penetrating mode, and the third through hole (203) and the first through hole (102) are aligned with each other;

The connecting piece comprises a bolt (3) and a clamp spring (302), an annular groove (301) is formed in the outer side wall of the bolt (3) in a surrounding mode, the clamp spring (302) is embedded in the third through hole (203), the bolt (3) penetrates through the first through hole (102) simultaneously, the clamp spring (302) and the third through hole (203), and the clamp spring (302) is hooped at the annular groove (301) of the bolt (3).