CN112523284A - Scraper bucket of shoveling and digging machine and shoveling and digging machine - Google Patents

Abstract

The invention provides a bucket of a shovel excavator and the shovel excavator, wherein the shovel excavator is provided with an excavator body, a crawler belt for driving to travel is arranged below the excavator body, a cab is arranged above the excavator body, a movable arm, a bucket rod and the bucket are sequentially arranged in front of the excavator body from back to front, the bucket comprises a bucket body and a bucket tooth assembly, the bucket assembly comprises bucket teeth and a tooth seat, and the bucket teeth and the tooth seat are connected by adopting a connecting piece without using bolts. The invention can improve and strengthen the strength of the bucket teeth and the strength of the tooth holder.

Description

Scraper bucket of shoveling and digging machine and shoveling and digging machine

Technical Field

The invention belongs to the field of engineering machinery, and particularly relates to a bucket of a shovel excavator and the shovel excavator.

Background

The shovel excavator is a mechanical device commonly used in the existing engineering construction, is widely used, greatly accelerates the progress of the engineering construction, reduces manpower, and can exert better excavating performance in the aspect that some manpower can not reach, which is also an important reason that the shovel excavator can be used in the engineering construction.

The shovel excavator comprises an excavator body and an operation arm, the excavator body plays roles of walking, rotating, supporting and controlling, the operation arm comprises a movable arm, a bucket rod, a bucket and an oil cylinder for driving work, the operation arm plays roles of digging and carrying, a bucket tooth assembly used for crushing is arranged on the bucket, and the bucket tooth assembly comprises a bucket tooth and a tooth holder.

However, the existing bucket teeth and tooth holders are generally in a mode of forming holes in the bucket teeth, the bucket teeth are fixed on the tooth holders by the aid of the pin shafts penetrating through the through holes, and the strength of the surfaces of the bucket teeth is often damaged due to the fact that the through holes need to be formed in the upper side surface, the lower side surface or the left side surface and the right side surface of the bucket tooth part at the foremost end, and accordingly the strength of the bucket teeth is reduced.

Disclosure of Invention

In view of the above-mentioned problems, the present invention provides a bucket of a shovel and a shovel, which aim to enhance the strength of a tooth assembly, particularly the strength of a tooth, and the tooth of the present invention is suitable for a large excavator, such as a large mining excavator or a large mining shovel.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a shovel loader bucket 106, the bucket 106 includes a bucket body and a tooth assembly, the bucket assembly includes tooth 1, toothholder 2, tooth 1 and toothholder 2 adopt connecting piece 3 and need not to use the bolt to connect.

Further, the connecting piece 3 is used for connecting the bucket tooth 1 and the tooth holder 2, the connecting piece 3 includes a buffer plate 7, a fixed shell 8, a buffer end 9 and a connector 10, the fixed shell 8 is fixedly connected with the buffer plate 7, a second through hole 11 is arranged on the buffer plate 7, the fixed shell 8 has a second cavity 12, slide rails 13 are symmetrically arranged on the inner wall of the fixed shell 8, a slide block 14 is slidably arranged on the slide rails 13, the connector 10 is fixed on one side of the buffer end 9, a shaft 15 is fixed on the other side of the buffer end 9, a first shoulder 17 and a second shoulder 18 are respectively arranged on two sides of the shaft 15, a sleeve 16 is arranged on the shaft 15, the sleeve 16 can rotate relative to the shaft 15, a fixing device 19 corresponding to the slide block 14 is arranged on the sleeve 16, one end of a first connecting rod 20 is hinged on the slide block 14, and the other end of the first connecting rod 20 is hinged with one end of a locking rod 21, the other end of the locking rod 21 is hinged to the sleeve 16, the middle of the locking rod 21 is hinged to one end of a second connecting rod 22, the other end of the second connecting rod 22 is hinged to a circular ring 23, a hexagonal screw hole is formed in the surface AB of the second shoulder 18, a lock head 24 is arranged on the fixing rod 21, and the lock head 24 is used for being fixed to the fixing device 19.

Further, the bucket tooth 1 is provided with a first cavity 5 and a hole groove 6, the hole groove 6 is a threaded hole, an external thread is arranged on the connecting head 10, the connecting head 10 is matched with the hole groove 6 for use, a first through hole 4 is arranged on the tooth holder 2, the first through hole 4 is used for fixing the tooth holder 2 on the bucket, a boss 27 is arranged on the end of the tooth holder 2, the boss 27 is annular, and the boss 27 is matched with the sliding block 14 when being installed; the fixing device 19 comprises a locking block 25 fixed on the sleeve 16, and a latch 26 arranged on the locking block 25, wherein the latch 26 is used for clamping the locking head 24; the second shoulder 18 is circular, and the outer diameter of the first shoulder 18 is smaller than the inner diameter of the ring 23, so that the ring 23 can accommodate the first shoulder 18 after installation; the slide rail 13 and the slide block 14 are provided with four.

Furthermore, a plurality of small-aperture through holes are formed in the buffer 7, so that the buffer plate 7 is used for buffering the impact force between the bucket tooth 1 and the tooth holder 2, and a plurality of circular grooves 28 are formed in the buffer end 9 through a drill, so that the buffer end 9 is used for absorbing the vibration of the bucket tooth 1 at the front end; the circular grooves 28 are uniformly arranged on the buffer end 9, and the circular grooves 28 are filled with elastic members which are adhered in the circular grooves 28.

A shovel 100, shovel 100 has organism 101, the below of organism 101 is provided with the track 102 that is used for the drive to travel, the top of organism 101 is provided with driver's cabin 103, there is movable arm 104, arm 105 and scraper bowl 106 to having set gradually forward behind the place ahead of organism 101, scraper bowl 106 includes scraper bowl body and dipper tooth assembly, the scraper bowl assembly includes tooth 1, toothholder 2, tooth 1 and toothholder 2 adopt connecting piece 3 and need not to use the bolt to connect.

Further, the connecting piece 3 is used for connecting the bucket tooth 1 and the tooth holder 2, the connecting piece 3 includes a buffer plate 7, a fixed shell 8, a buffer end 9 and a connector 10, the fixed shell 8 is fixedly connected with the buffer plate 7, a second through hole 11 is arranged on the buffer plate 7, the fixed shell 8 has a second cavity 12, slide rails 13 are symmetrically arranged on the inner wall of the fixed shell 8, a slide block 14 is slidably arranged on the slide rails 13, the connector 10 is fixed on one side of the buffer end 9, a shaft 15 is fixed on the other side of the buffer end 9, a first shoulder 17 and a second shoulder 18 are respectively arranged on two sides of the shaft 15, a sleeve 16 is arranged on the shaft 15, the sleeve 16 can rotate relative to the shaft 15, a fixing device 19 corresponding to the slide block 14 is arranged on the sleeve 16, one end of a first connecting rod 20 is hinged on the slide block 14, and the other end of the first connecting rod 20 is hinged with one end of a locking rod 21, the other end of the locking rod 21 is hinged to the sleeve 16, the middle of the locking rod 21 is hinged to one end of a second connecting rod 22, the other end of the second connecting rod 22 is hinged to a circular ring 23, a hexagonal screw hole is formed in the surface AB of the second shoulder 18, a lock head 24 is arranged on the fixing rod 21, and the lock head 24 is used for being fixed to the fixing device 19.

Further, the bucket tooth 1 is provided with a first cavity 5 and a hole groove 6, the hole groove 6 is a threaded hole, an external thread is arranged on the connecting head 10, the connecting head 10 is matched with the hole groove 6 for use, a first through hole 4 is arranged on the tooth holder 2, the first through hole 4 is used for fixing the tooth holder 2 on the bucket, a boss 27 is arranged on the end of the tooth holder 2, the boss 27 is annular, and the boss 27 is matched with the sliding block 14 when being installed; the fixing device 19 comprises a locking block 25 fixed on the sleeve 16, and a latch 26 arranged on the locking block 25, wherein the latch 26 is used for clamping the locking head 24; the second shoulder 18 is circular, and the outer diameter of the first shoulder 18 is smaller than the inner diameter of the ring 23, so that the ring 23 can accommodate the first shoulder 18 after installation; the slide rail 13 and the slide block 14 are provided with four.

Furthermore, a plurality of small-aperture through holes are formed in the buffer plate 7, so that the buffer plate 7 is used for buffering the impact force between the bucket tooth 1 and the tooth holder 2, and a plurality of circular grooves 28 are formed in the buffer end 9 through a drill, so that the buffer end 9 is used for absorbing the vibration of the bucket tooth 1 at the front end; the circular grooves 28 are uniformly arranged on the buffer end 9, and the circular grooves 28 are filled with elastic members which are adhered in the circular grooves 28.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention can improve and strengthen the intensity of the bucket tooth, and can also improve and strengthen the intensity of the tooth base at the same time, for the existing shovel excavator, because the shovel excavator has a bigger volume, the maintenance is inconvenient, the invention can reduce the damage to the bucket tooth which is most vulnerable, and reduce the maintenance of the shovel excavator in the aspect of prolonging the service life of the bucket tooth;

2. the bucket tooth assembly is suitable for bucket tooth assemblies in the prior art, holes formed in the bucket teeth in the prior art are supplemented, the strength of the bucket teeth is improved, then hole grooves are formed in the bucket teeth, and bosses are machined on tooth holders so as to be suitable for connecting pieces in the application;

3. the invention can reduce the holes arranged at the outer side of the bucket tooth, the surface of the bucket tooth can keep the original streamline shape, and the phenomenon of stress concentration suddenly appearing at a certain position due to the requirement of connection can be avoided.

Drawings

FIG. 1 is a schematic view of the overall construction of the present invention;

FIG. 2 is a schematic view of a bucket construction according to the present disclosure;

FIG. 3 is a schematic view of the overall installation of the present invention;

FIG. 4 is an overall three-part schematic of the present invention;

FIG. 5 is a schematic view of the tooth of the present invention;

FIG. 6 is a first schematic view of a connector according to the present invention;

FIG. 7 is a second schematic view of a connector structure according to the present invention;

FIG. 8 is an enlarged view of portion A of FIG. 7 in accordance with the present invention;

FIG. 9 is an enlarged view of portion B of FIG. 8 in accordance with the present invention;

FIG. 10 is a schematic view of a tooth holder according to the present invention;

FIG. 11 is a connector installation process of the present invention;

FIG. 12 is a schematic view of the tooth of the present invention mounted to a tooth holder;

FIG. 13 is an enlarged view of portion C of FIG. 12 in accordance with the present invention;

FIG. 14 is a schematic view of the internal structure of the tooth of the present invention mounted to the tooth holder;

FIG. 15 is an enlarged view of portion D of FIG. 14 in accordance with the present invention;

FIG. 16 is a view of the connector of the present invention with a circular groove;

in the figure, the excavator 100, a machine body 101, a crawler 102, a cab 103, a movable arm 104, an arm 105, a bucket 106, an tooth 1, a tooth holder 2, a connecting piece 3, a first through hole 4, a first cavity 5, a hole groove 6, a buffer plate 7, a fixed shell 8, a buffer end 9, a connecting head 10, a second through hole 11, a second cavity 12, a slide rail 13, a slide block 14, a shaft 15, a sleeve 16, a first shoulder 17, a second shoulder 18, a fixing device 19, a first connecting rod 20, a locking rod 21, a second connecting rod 22, a ring 23, a locking head 24, a locking block 25, a lock catch 26, a boss 27 (ring shape) and a circular groove 28 are shown.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected or detachably connected; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

FIG. 1 is a general schematic view of the shovel of the present invention; the shovel 100 includes a body 101, a crawler 102 for driving traveling is provided below the body 101, a cab 103 is provided above the body 101, and a boom 104, an arm 105, and a bucket 106 are sequentially provided in front of the body 101 in the rear direction. As shown in fig. 2, the bucket 106 includes a bucket body and a tooth assembly, the bucket assembly includes a tooth 1 and a tooth holder 2, and the tooth 1 and the tooth holder 2 are connected by a connecting member 3 without using a latch.

Fig. 3 shows a tooth assembly of the present invention, which includes a tooth 1, a tooth holder 2 and a connecting member 3, wherein the connecting member 3 is used for connecting the tooth 1 and the tooth holder 2.

As shown in fig. 4, which is a schematic view of three main components of the present invention, the connector 3 includes a buffer plate 7, a fixed case 8, a buffer end 9 and a connection head 10,

as shown in fig. 6-9, the fixed shell 8 is fixedly connected to the buffer plate 7, the buffer plate 7 is provided with a second through hole 11, the fixed shell 8 has a second cavity 12, the inner wall of the fixed shell 8 is symmetrically provided with slide rails 13, the slide rails 13 are slidably provided with sliders 14, one side of the buffer end 9 is fixed with a connector 10, the other side of the buffer end 9 is fixed with a shaft 15, two sides of the shaft 15 are respectively provided with a first shoulder 17 and a second shoulder 18, the shaft 15 is provided with a sleeve 16, the sleeve 16 can rotate relative to the shaft 15, the sleeve 16 is provided with a fixing device 19 corresponding to the slider 14, the slider 14 is hinged to one end of a first link 20, the other end of the first link 20 is hinged to one end of a locking lever 21, the other end of the locking lever 21 is hinged to the sleeve 16, the middle of the locking lever 21 is hinged to one end of a second link 22, the other end of the second connecting rod 22 is hinged to the ring 23, a hexagonal screw hole is formed in the surface AB of the second shoulder 18, a locking head 24 is arranged on the fixing rod 21, and the locking head 24 is used for being fixed on the fixing device 19.

As shown in fig. 5, in order to match the connecting piece 3, a hole groove 6 is formed in a side wall of the first cavity 5 of the bucket tooth 1, the hole groove 6 is arranged at a position shown in fig. 5, the position is opposite to a tooth tip of the bucket tooth 1, the hole groove 6 is a threaded hole, an external thread is formed on the connecting head 10, and the connecting head 10 is matched with the hole groove 6 for use. As shown in fig. 10, a first through hole 4 is formed in the toothholder 2, the first through hole 4 is used for fixing the toothholder 2 to the bucket (in a manner of matching a screw and a nut), a boss 27 is formed on an end of the toothholder 2, the boss 27 is annular, the boss 27 is matched with the slider 14 when being installed, and the slider 14 is clamped on the boss 27 to realize fixing.

As shown in fig. 9, the fixing device 19 includes a locking block 25 fixed on the sleeve 16, and a latch 26 provided on the locking block 25, the latch 26 being for snapping the locking head 24.

As shown in fig. 14 and 15, the second shoulder 18 is circular, and the outer diameter of the first shoulder 18 is smaller than the inner diameter of the ring 23, so that the ring 23 can accommodate the first shoulder 18 after installation.

The slide rail 13 and the slide block 14 are provided with four.

The buffer plate 7 is provided with a plurality of small-aperture through holes (not shown in the figure), so that the buffer plate 7 is used for buffering the impact force between the bucket tooth 1 and the tooth holder 2, the buffer plate 7 can effectively improve the strength of the bucket tooth and the tooth holder, the impact force can be improved by 50% in impact tests and simulation tests for the bucket tooth, and the impact force can be improved by nearly 30% in the impact tests and simulation tests for the tooth holder.

As shown in fig. 16, a plurality of circular grooves 28 are formed in the buffer end 9 by a drill, so that the buffer end 9 serves to absorb the shock of the tooth 1 at the tip. The circular grooves 28 are uniformly arranged on the buffer end 9, and the circular grooves 28 are filled with elastic members which are adhered in the circular grooves 28. When only the plurality of circular grooves 28 are provided, the shock when the bucket tooth receives the impact can be absorbed, and when the elastic member is provided in the plurality of circular grooves 28, the shock can be reduced by 40%. As shown in fig. 16, the buffer end 9 is in a nearly conical shape, and 5 circles of circular grooves 28 are provided therein, it is found by experiments of the present invention (as shown in fig. 16, the circular grooves 28 are divided into a first circle of grooves, a second circle of grooves, a third circle of grooves, a fourth circle of grooves and a fifth circle of grooves from left to right), when elastic members are filled in the first circle of grooves and the second circle of grooves, 30% of vibration can be reduced, when elastic members are continuously filled in the third circle of grooves, 38% of vibration can be reduced, and when elastic members are continuously filled in the fourth circle of grooves and the fifth circle of grooves, 39% and 40% of vibration can be reduced, so that it can be found that the position of the circular groove 28 should be set to the left end of the buffer end 9 as far as possible, and the capability of protecting the bucket teeth can be improved.

The installation mode of the invention is as follows: a hexagonal screwdriver penetrates through the second through hole 11 and is inserted into a hexagonal screw hole in the AB surface, the connector 12 is screwed into the hole groove 6, the outer side surface of the fixing shell 8 is attached to the inner side wall of the first cavity 5 of the bucket tooth 1 in the process, and the connecting piece 3 is fixed on the bucket tooth 1 at the moment; then insert on toothholder 2 again, the terminal surface and the ring 23 butt of the left end (as shown in fig. 10) of toothholder 2, because the outside diameter of terminal surface is greater than the interior circle diameter of ring 23, consequently ring 23 can be pushed to the tip of bucket tooth 1, continues to push ring 23, and in the in-process that continues to push, slider 14 and boss 27 butt (as shown in fig. 14, 15), tapered end 24 joint has realized fixedly on buckle 26 this moment. When the bucket tooth assembly needs to be disassembled, the lock head 24 can be separated from the lock catch only by clamping the bucket tooth through the external clamping claw and pulling out the bucket tooth, but direct rotation disassembly of the bucket tooth 1 is not recommended at this time, because the bucket tooth assembly is used for a long time at this time, and the bucket tooth 1 is connected with the connector 12 tightly, the connector is easy to damage by adopting the rotation of the bucket tooth 1 for disassembly, and the repeated use of the connecting piece 3 can be seriously damaged by adopting the disassembly of the rotation of the bucket tooth 1. The tooth assembly of the present invention (the sum of the tooth 1, the tooth holder 2, and the attachment 3) is suitable for a large excavator bucket, and therefore, the tooth assembly is also large.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention can improve and strengthen the intensity of the bucket tooth, and can also improve and strengthen the intensity of the tooth base at the same time, for the existing shovel excavator, because the shovel excavator has a bigger volume, the maintenance is inconvenient, the invention can reduce the damage to the bucket tooth which is most vulnerable, and reduce the maintenance of the shovel excavator in the aspect of prolonging the service life of the bucket tooth;

2. the bucket tooth assembly is suitable for bucket tooth assemblies in the prior art, holes formed in the bucket teeth in the prior art are supplemented, the strength of the bucket teeth is improved, then hole grooves are formed in the bucket teeth, and bosses are machined on tooth holders so as to be suitable for connecting pieces in the application;

3. the invention can reduce the holes arranged at the outer side of the bucket tooth, the surface of the bucket tooth can keep the original streamline shape, and the phenomenon of stress concentration suddenly appearing at a certain position due to the requirement of connection can be avoided.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (8)

1. A shovel (106), the dipper (106) comprising a dipper body and a tine assembly, characterized by:

the bucket assembly comprises bucket teeth (1) and a tooth holder (2), wherein the bucket teeth (1) and the tooth holder (2) are connected through a connecting piece (3) without using a bolt.

2. A cutting shovel (106) as claimed in claim 1, wherein: the connecting piece (3) is used for connecting the bucket teeth (1) and the tooth holder (2), the connecting piece (3) comprises a buffer plate (7), a fixed shell (8), a buffering end (9) and a connector (10), the fixed shell (8) is fixedly connected with the buffer plate (7), a second through hole (11) is formed in the buffer plate (7), the fixed shell (8) is provided with a second cavity (12), slide rails (13) are symmetrically arranged on the inner wall of the fixed shell (8), slide blocks (14) are slidably arranged on the slide rails (13), the connector (10) is fixed on one side of the buffering end (9), a shaft (15) is fixed on the other side of the buffering end (9), a first shoulder (17) and a second shoulder (18) are respectively arranged on two sides of the shaft (15), a sleeve (16) is arranged on the shaft (15), and the sleeve (16) can rotate relative to the shaft (15), the novel locking mechanism is characterized in that a fixing device (19) corresponding to the sliding block (14) is arranged on the sleeve (16), one end of a first connecting rod (20) is hinged to the sliding block (14), the other end of the first connecting rod (20) is hinged to one end of a locking rod (21), the other end of the locking rod (21) is hinged to the sleeve (16), the middle of the locking rod (21) is hinged to one end of a second connecting rod (22), the other end of the second connecting rod (22) is hinged to a circular ring (23), a hexagonal screw hole is formed in the AB surface of the second shoulder (18), a lock head (24) is arranged on the fixing rod (21), and the lock head (24) is used for being fixed to the fixing device (19).

3. A shovel loader bucket (106) as set forth in claim 2 further characterized by: the bucket tooth (1) is provided with a first cavity (5) and a hole groove (6), the hole groove (6) is a threaded hole, an external thread is arranged on the connector (10), the connector (10) is matched with the hole groove (6) for use, a first through hole (4) is formed in the tooth holder (2), the first through hole (4) is used for fixing the tooth holder (2) on a bucket, a boss (27) is arranged on the end of the tooth holder (2), the boss (27) is annular, and the boss (27) is matched with the sliding block (14) when being installed;

the fixing device (19) comprises a locking block (25) fixed on the sleeve (16) and a lock catch (26) arranged on the locking block (25), and the lock catch (26) is used for clamping the lock head (24);

the second shoulder (18) is circular, the outer diameter of the first shoulder (18) is smaller than the inner diameter of the ring (23), so that the ring (23) can accommodate the first shoulder (18) after installation;

the four sliding rails (13) and the four sliding blocks (14) are arranged.

4. A shovel loader bucket (106) as set forth in claim 3 wherein: a plurality of small-aperture through holes are formed in the buffer plate (7), so that the buffer plate (7) is used for buffering impact force between the bucket tooth (1) and the tooth holder (2), and a plurality of circular grooves (28) are machined in the buffer end (9) through a drill, so that the buffer end (9) is used for absorbing vibration of the bucket tooth (1) at the front end;

the round grooves (28) are uniformly arranged on the buffer end (9), and elastic pieces are filled in the round grooves (28) and are adhered in the round grooves (28).

5. A shovel (100), the shovel (100) having a body (101), a crawler belt (102) for driving traveling provided below the body (101), a cab (103) provided above the body (101),

a movable arm (104), a bucket rod (105) and a bucket (106) are sequentially arranged in front of the machine body (101) from back to front, the bucket (106) comprises a bucket body and a shovel tooth assembly,

the method is characterized in that: the bucket assembly comprises bucket teeth (1) and a tooth holder (2), wherein the bucket teeth (1) and the tooth holder (2) are connected through a connecting piece (3) without using a bolt.

6. A shovel (100) as claimed in claim 5, further comprising: the connecting piece (3) is used for connecting the bucket teeth (1) and the tooth holder (2), the connecting piece (3) comprises a buffer plate (7), a fixed shell (8), a buffering end (9) and a connector (10), the fixed shell (8) is fixedly connected with the buffer plate (7), a second through hole (11) is formed in the buffer plate (7), the fixed shell (8) is provided with a second cavity (12), slide rails (13) are symmetrically arranged on the inner wall of the fixed shell (8), slide blocks (14) are slidably arranged on the slide rails (13), the connector (10) is fixed on one side of the buffering end (9), a shaft (15) is fixed on the other side of the buffering end (9), a first shoulder (17) and a second shoulder (18) are respectively arranged on two sides of the shaft (15), a sleeve (16) is arranged on the shaft (15), and the sleeve (16) can rotate relative to the shaft (15), the novel locking mechanism is characterized in that a fixing device (19) corresponding to the sliding block (14) is arranged on the sleeve (16), one end of a first connecting rod (20) is hinged to the sliding block (14), the other end of the first connecting rod (20) is hinged to one end of a locking rod (21), the other end of the locking rod (21) is hinged to the sleeve (16), the middle of the locking rod (21) is hinged to one end of a second connecting rod (22), the other end of the second connecting rod (22) is hinged to a circular ring (23), a hexagonal screw hole is formed in the AB surface of the second shoulder (18), a lock head (24) is arranged on the fixing rod (21), and the lock head (24) is used for being fixed to the fixing device (19).

7. A shovel (100) as claimed in claim 6, further comprising: the bucket tooth (1) is provided with a first cavity (5) and a hole groove (6), the hole groove (6) is a threaded hole, an external thread is arranged on the connector (10), the connector (10) is matched with the hole groove (6) for use, a first through hole (4) is formed in the tooth holder (2), the first through hole (4) is used for fixing the tooth holder (2) on a bucket, a boss (27) is arranged on the end of the tooth holder (2), the boss (27) is annular, and the boss (27) is matched with the sliding block (14) when being installed;

the fixing device (19) comprises a locking block (25) fixed on the sleeve (16) and a lock catch (26) arranged on the locking block (25), and the lock catch (26) is used for clamping the lock head (24);

the second shoulder (18) is circular, the outer diameter of the first shoulder (18) is smaller than the inner diameter of the ring (23), so that the ring (23) can accommodate the first shoulder (18) after installation;

the four sliding rails (13) and the four sliding blocks (14) are arranged.

8. The power shovel (100) as set forth in claim 7, further characterized by: a plurality of small-aperture through holes are formed in the buffer plate (7), so that the buffer plate (7) is used for buffering impact force between the bucket tooth (1) and the tooth holder (2), and a plurality of circular grooves (28) are machined in the buffer end (9) through a drill, so that the buffer end (9) is used for absorbing vibration of the bucket tooth (1) at the front end;

the round grooves (28) are uniformly arranged on the buffer end (9), and elastic pieces are filled in the round grooves (28) and are adhered in the round grooves (28).

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