CN211472667U - Bolt device and self-locking rotary excavator - Google Patents

Abstract

The utility model provides a bolt device and auto-lock rotary excavator relates to locking slewer technical field to the locking mechanical system who solves among the prior art operates inconveniently, the lower technical problem of locking operating efficiency. The bolt device provided by the utility model is used for locking the rotation between the rotating part and the fixing part, and comprises a pin seat, a pin part and a clamping jaw, wherein one of the pin seat and the pin part is arranged on the rotating part, and the other one is arranged on the fixing part; the jack catch is connected in the key seat, and the key seat has the draw-in groove and the opening that communicates with the draw-in groove, and along the direction of motion of round pin spare for the key seat, the opening sets up in the upper reaches of draw-in groove, and after round pin spare passed through the opening and inserted the draw-in groove, the jack catch can block that round pin spare deviates from the draw-in groove from the opening. The utility model provides a auto-lock rotary excavator, include: the upper rotary vehicle body, the lower vehicle body and the bolt device are arranged on the vehicle body; the pin seat is arranged on the lower vehicle body, and the pin piece is arranged on the upper revolving vehicle; or the pin seat is arranged on the upper rotary vehicle body, and the pin piece is arranged on the lower vehicle body.

Description

Bolt device and self-locking rotary excavator

Technical Field

The utility model belongs to the technical field of the locking slewer technique and specifically relates to a bolt device and auto-lock rotary excavator is related to.

Background

With the social development and the continuous progress of the engineering machinery manufacturing technology, the engineering machinery of all industries is developed in a breakthrough way. In view of the development of construction machines in recent years, the development of excavators is relatively fast, and the excavator has become one of the most important construction machines in construction.

In terms of mechanical mechanisms, an excavator generally comprises an upper revolving vehicle body and a lower vehicle body, wherein a general excavating mechanism is mounted on the upper revolving vehicle body, a travelling mechanism is mounted on the lower vehicle body, the upper revolving vehicle body can drive the excavating mechanism to revolve, and the excavating mechanism can perform excavating operation; the running gear can drive the lower vehicle body to advance.

In the prior art, when an excavator works, the upper rotary vehicle body is required to be rotationally locked so as to ensure the stability of the excavator when the excavator performs excavation operation. The locking mechanism in the prior art is inconvenient to operate and low in locking operation efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bolt device and auto-lock rotary excavator to the locking mechanical system who solves among the prior art operates inconveniently, the lower technical problem of locking operating efficiency.

The utility model provides a bolt device is used for locking the relative rotation between revolving part and the mounting, bolt device includes key seat, round pin spare and jack catch, the key seat with one of the two of round pin spare install in revolving part, another install in the mounting.

The jack catch set up in the key seat, the key seat have the draw-in groove and with the opening of draw-in groove intercommunication.

The opening is arranged at the upstream of the clamping groove along the movement direction of the pin piece relative to the pin base, and after the pin piece is inserted into the clamping groove through the opening, the clamping jaw can block the pin piece from being separated from the clamping groove from the opening.

Further, the jack catch is the gyration jack catch, the gyration jack catch can lock ground rotation connect in the key seat.

Furthermore, the rotary clamping jaw is provided with a rotating shaft and a plurality of blocking parts fixedly arranged on the rotating shaft, the blocking parts are arranged along the circumferential direction of the rotating shaft at intervals, and the rotating shaft is rotatably connected with the pin boss.

Any one of the blocking portions has a blocking position capable of blocking the pin member and a locking position to lock the swing claw.

Further, the latch assembly may further include a stop member movably coupled to the keyway.

The stop piece can be clamped with at least one blocking part at the locking position so as to lock the rotary clamping jaw to reversely rotate.

Furthermore, the pin boss is provided with a containing groove, and the stop piece can be arranged in the containing groove in a stretching mode.

When the pin piece is inserted into the clamping groove, the stop piece extends out of the accommodating groove and is clamped with the blocking part at the locking position.

Furthermore, an elastic piece is arranged between the bottom of the accommodating groove and the stop piece, and the elastic piece always has a movement trend of enabling the stop piece to extend out of the accommodating groove.

Further, the stopper has a wedge surface, and the blocking portion rotates and slides along the wedge surface of the stopper to drive the stopper to retract into the receiving groove.

And/or the blocking part is provided with a wedge surface, and the blocking part rotates to enable the stopping piece to slide along the wedge surface of the blocking part so as to drive the stopping piece to retract into the accommodating groove.

Furthermore, the pin boss is provided with a limiting groove communicated with the accommodating groove, the stop piece is provided with a limiting part, and the limiting part is matched with the limiting groove so as to limit the stop piece to rotate in the accommodating groove.

Further, the pin boss includes upper cover plate, splint and the bottom plate of range upon range of setting, the upper cover plate has first notch, the splint have the second notch, the bottom plate has the third notch.

The second notch is provided with a first notch cavity and a second notch cavity which are communicated, and the first notch, the first notch cavity and the third notch are communicated to form the clamping groove.

The clamping jaw is rotatably connected between the upper cover plate and the bottom plate and arranged in the second groove cavity.

The utility model also provides a auto-lock rotary excavator, include: an upper rotary vehicle body, a lower vehicle body and the bolt device.

The pin seat is arranged on the lower vehicle body, and the pin piece is arranged on the upper rotary vehicle.

Or, the pin seat is mounted on the upper rotary vehicle body, and the pin member is mounted on the lower vehicle body.

The utility model provides a beneficial effect that bolt device and auto-lock rotary excavator brought is:

the utility model provides a bolt device, including key seat, round pin spare and jack catch, one of both of key seat and round pin spare is installed in the rotating member, and another person is installed in the mounting. The jack catch sets up in the key seat, and along the direction of motion of round pin spare for the key seat, the opening sets up in the upper reaches of draw-in groove, and round pin spare inserts the draw-in groove through the opening, and at this moment, the jack catch action blocks round pin spare and deviates from the draw-in groove from the opening to locking round pin spare prevents to sell the spare and deviates from the key seat, thereby the relative rotation between locking gyration piece and the mounting.

In the structure, the pin seat and one of the pin piece are arranged on the rotating piece, the other one is arranged on the fixing piece, the pin piece moves relative to the pin seat by utilizing the relative rotation between the rotating piece and the fixing piece, and the clamping jaw can block the pin piece from being separated from the clamping groove from the opening by inserting the opening into the clamping groove, so that the locking pin piece and the pin seat are realized. The opening and the draw-in groove of key seat set gradually for the direction of motion of key seat along the round pin piece in above-mentioned structure, consequently, can directly make during the round pin piece inserts the draw-in groove for the motion of key seat, compare with prior art, above-mentioned structure need not to aim at round pin piece and pinhole through the fine setting to simplified the locking step, made the locking operation more convenient, thereby directly promoted the efficiency of locking operation.

The utility model also provides a auto-lock rotary excavator, include: the upper rotary vehicle body, the lower vehicle body and the bolt device are arranged on the vehicle body; the pin seat is arranged on the lower vehicle body, and the pin piece is arranged on the upper revolving vehicle; alternatively, the pin boss is mounted on the upper swing vehicle body, and the pin member is mounted on the lower vehicle body.

In the structure, the bolt device is used for the self-locking rotary excavator, the bolt device can be conveniently and quickly locked to rotate between the upper rotary excavator body and the lower excavator body, and therefore the self-locking rotary excavator has the advantages of the bolt device and is not repeated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a latch device according to an embodiment of the present invention;

fig. 2 is a schematic view of a partial structure of a latch device according to an embodiment of the present invention;

fig. 3 is a schematic view of a partially exploded structure of a latch device according to an embodiment of the present invention.

Icon: 100-pin seat; 110-an upper cover plate; 111-a first notch; 112-rotating shaft hole; 113-a first mounting hole; 120-clamping plate; 121-a second notch; 010-a first slot cavity; 020-second slot cavity; 122-a second mounting hole; 130-a backplane; 131-a third notch; 132-a receiving groove; 133-a limiting groove; 134-third mounting hole; 140-a card slot; 200-a pin; 300-turning jaws; 310-a barrier; 311-a first barrier; 312-a second barrier; 313-a third barrier; 320-a rotating shaft; 400-a stop; 410-a limiting part; 500-elastic member.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless expressly stated or limited otherwise, the terms "connected" and "attached" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be directly connected or connected through an intermediate medium; either mechanically or electrically. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.

The specific structure is shown in fig. 1-3.

The present embodiment provides a latch device for locking the relative rotation between a rotating member and a fixed member, as shown in fig. 1-3, the latch device includes a pin seat 100, a pin member 200 and a claw, preferably, the pin member 200 is mounted on the rotating member, and the pin seat 100 is mounted on the fixed member; alternatively, the pin holder 100 is attached to the rotating member and the pin member 200 is attached to the fixed member.

The claw is arranged on the pin holder 100, the pin holder 100 is provided with a clamping groove 140 and an opening communicated with the clamping groove 140, the opening is arranged on the upstream of the clamping groove 140 along the moving direction of the pin member 200 relative to the pin holder 100, and after the pin member 200 is inserted into the clamping groove 140 through the opening, the claw can prevent the pin member 200 from being separated from the clamping groove 140 from the opening, so that the relative rotation between the rotating member and the fixed member is locked.

With the structure, the pin piece moves relative to the pin base by utilizing the relative rotation between the rotating piece and the fixing piece, and is inserted into the clamping groove 140 through the opening, and the clamping jaw can block the pin piece 200 from being separated from the clamping groove 140 from the opening, so that the pin piece 200 and the pin base 100 are locked. The opening and the draw-in groove 140 of key seat 100 set gradually for the direction of motion of key seat along round pin piece 200 in the above-mentioned structure, consequently, can directly make and insert in draw-in groove 140 for the round pin piece 200 of key seat motion, compare with prior art, above-mentioned structure need not to aim at round pin piece 200 and pinhole through the fine setting to simplified the locking step, made the locking operation more convenient, thereby directly promoted the efficiency of locking operation.

In an alternative embodiment, referring mainly to fig. 1-3, the jaws are rotary jaws 300, and the rotary jaws 300 are lockably and rotatably connected to the pin holder 100.

Specifically, the pin 200 is moved to be inserted into the slot 140 from the opening, the rotary claw 300 is rotatably connected to the pin holder 100, and in the process of inserting the pin 200 into the slot 140, after the pin 200 is inserted into the slot 140, the rotary claw 300 rotates and blocks the opening of the pin holder 100, and at this time, the rotary claw 300 is locked, so that the pin 200 in the slot 140 is prevented from being removed from the slot 140 from the opening.

Preferably, during the process of inserting the pin 200 into the slot 140, the pin 200 abuts against the rotary claw 300, and as the pin 200 continues to move into the slot 140, the pin 200 can push the rotary claw 300 to rotate, and after the pin 200 is completely inserted into the slot 140, the rotary claw 300 blocks the opening and locks the rotation. With this structure, the engagement of the pin member 200 with the pin holder 100 can be automatically completed without adjusting the position of the rotary jaw 300 by separately controlling the rotation of the rotary jaw 300.

In addition, the jaws may also be telescopic jaws which are telescopically connected to the pin holder 100, and extend out and block the opening after the pin member 200 is inserted into the slot 140 through the opening, so as to prevent the pin member 200 from coming out of the slot 140 from the opening.

In an optional technical solution of this embodiment, referring mainly to fig. 3, the rotary claw 300 has a rotating shaft 320 and a plurality of blocking portions 310 fixedly disposed on the rotating shaft 320, the plurality of blocking portions 310 are circumferentially spaced along the rotating shaft 320, and the rotating shaft 320 is rotatably connected to the pin boss 100.

Any one of the blocking portions 310 has a blocking position capable of blocking the pin member 200 and a locking position locking the swing jaw 300.

Preferably, the blocking parts 310 are arranged at intervals along the circumferential direction of the rotating shaft 320, and the blocking parts 310 are all fixedly connected to the rotating shaft 320, and the blocking parts 310 can rotate around the rotation center line of the rotating shaft 320. With the above structure, in the process of inserting the pin 200 into the slot 140, the pin 200 abuts against one of the blocking portions 310 of the rotary jaw 300 and pushes the blocking portion 310, thereby driving the rotary jaw 300 to rotate, and after the pin 200 is inserted into the slot 140, the blocking portion 310 rotates to the locking position and is locked, thereby locking the rotary jaw 300; the blocking portion 310 adjacent to the blocking portion 310 is rotated to the blocking position, so that the blocking portion 310 at the blocking position is locked to rotate and blocks the opening.

Preferably, the swing jaw 300 includes three stoppers 310, a first stopper 311, a second stopper 312, and a third stopper 313. The first blocking portion 311, the second blocking portion 312 and the third blocking portion 313 are arranged at an interval of 120 degrees between each two.

In an alternative embodiment, referring mainly to fig. 3, the latch mechanism further includes a stop member 400, and the stop member 400 is movably connected to the pin holder 100.

The stopper 400 can be engaged with at least one blocking portion 310 in the locking position to lock the reverse rotation of the rotary jaw 300.

In the above structure, the stopper 400 is used to engage with the blocking portion 310 in the locking position and lock the rotary claw 300, so that the blocking portion 310 in the blocking position is locked and the pin 200 is prevented from coming out of the engaging groove 140.

Preferably, during the process of inserting the pin 200 into the slot 140, the pin 200 abuts against the first blocking portion 311 and pushes the first blocking portion 311 to rotate around the rotation center line of the rotation shaft 320, after the pin 200 is completely inserted into the slot 140, the first blocking portion 311 rotates to the locking position, the second blocking portion 312 rotates to the blocking position, at this time, the stopper 400 acts to lock the reverse rotation of the first blocking portion 311, so that the locking rotary claw 300 reversely rotates, so that the second blocking portion 312 blocks the opening, and the pin 200 is prevented from coming out of the slot 140.

In addition, according to the difference of the initial positions of the rotary claws 300, during the process of inserting the pin 200 into the slot 140, the pin 200 can also abut against the second blocking portion 312 and push the second blocking portion 312 to rotate, after the pin 200 is completely inserted into the slot 140, the second blocking portion 312 rotates to the locking position, and the third blocking portion 313 rotates to the blocking position; or, the pin 200 abuts against the third stopping portion 313 and pushes the third stopping portion 313 to rotate, and after the pin 200 is completely inserted into the slot 140, the third stopping portion 313 rotates to the locking position, and the first stopping portion 311 rotates to the stopping position.

In an alternative embodiment of the present invention, referring mainly to fig. 3, the pin seat 100 has an accommodating groove 132, and the stop member 400 is disposed in the accommodating groove 132 in an extendable manner.

When the pin member 200 is inserted into the slot 140, the stop member 400 extends out of the receiving groove 132 and engages with the blocking portion 310 in the locking position.

Preferably, during the process of inserting the pin 200 into the slot 140, the pin 200 abuts against the first blocking portion 311 and pushes the first blocking portion 311 to rotate around the rotation center line of the rotating shaft 320, and during the rotation process of the first blocking portion 311, the stop member 400 can retract into the receiving groove 132, so as to prevent the stop member 400 from blocking the rotation of the first blocking portion 311, thereby ensuring that the pin 200 can be inserted into the slot 140 smoothly. After the pin 200 is completely inserted into the slot 140, the first blocking portion 311 rotates to the locking position, and at this time, the stopper 400 extends out of the accommodating groove 132 and is clamped with the first blocking portion 311, so that the locking rotary claw 300 reversely rotates, and at this time, the second blocking portion 312 is located at the blocking position, so that the second blocking portion 312 blocks the opening, and the pin 200 is prevented from coming out of the slot 140.

It should be noted that, in the above structure, the stop member 400 is protrudingly disposed on the receiving groove 132 for locking the blocking portion 310 at the locking position to rotate reversely. At this time, the pin member 200 is restricted in the card slot 140 by the groove wall of the card slot 140 of the pin holder 100 and the stopper 310 in the stopping position, and the pin member 200 is restricted in the card slot 140.

In an alternative embodiment of the present invention, referring mainly to fig. 3, an elastic member 500 is disposed between the bottom of the accommodating groove 132 and the stopping member 400, and the elastic member 500 always has a movement tendency that the stopping member 400 extends out of the accommodating groove 132.

Specifically, under the elastic action, the elastic member 500 can push the stopper 400 and make the stopper 400 extend out of the receiving groove 132. During the process of inserting the pin 200 into the slot 140, the pin 200 pushes the first blocking portion 311 to rotate, and at this time, the stopper 400 needs to be driven to compress the elastic member 500 and retract the stopper 400 into the receiving groove 132, so as to prevent the stopper 400 from blocking the forward rotation of the first blocking portion 311, and further prevent the stopper 400 from blocking the insertion of the pin 200 into the slot 140. When the first blocking portion 311 rotates and goes over the stopper 400, and rotates to the locking position, under the elastic force of the elastic member 500, the stopper 400 extends out of the receiving groove 132 and is clamped with the first blocking portion 311, and blocks the first blocking portion 311 from rotating reversely, and at this time, the second blocking portion 312 is located at the blocking position, thereby preventing the pin member 200 from coming out of the slot 140.

Preferably, the elastic member 500 is a spring.

In an alternative embodiment, referring mainly to fig. 3, the stopping member 400 has a wedge surface, and the blocking portion 310 rotates to slide along the wedge surface of the stopping member 400 to drive the stopping member 400 to retract into the receiving groove 132.

Specifically, during the process of inserting the pin member 200 into the slot 140, the pin member 200 pushes the first blocking portion 311 to rotate, and when the first blocking portion 311 abuts against the wedge surface of the stopper 400, the pin member 200 continues to push the first blocking portion 311 to rotate, and the first blocking portion 311 can slide relative to the wedge surface, thereby driving the stopper 400 to compress the elastic member 500 and retract into the receiving groove 132.

By utilizing the structure of the wedge surface, the stop piece 400 can automatically retract under the driving of the rotary claw 300, and the forward rotation of the rotary claw 300 is ensured.

In addition, the wedge surface may be only disposed on the stopper 310, the stopper 310 rotates, the wedge surface of the stopper 310 abuts against the stopper 400, and the pin 200 continues to push the stopper 310 to rotate, so that the stopper 400 slides along the wedge surface of the stopper 310, thereby driving the stopper 400 to compress the elastic member 500 and retract into the receiving groove 132.

In addition, the blocking portion 310 and the stopper 400 are provided with wedge surfaces, the pin member 200 pushes the blocking portion 310 to rotate, the wedge surface of the blocking portion 310 abuts against the wedge surface of the stopper 400, and the pin member 200 continues to push the blocking portion 310 to rotate, so that the wedge surface of the stopper 400 slides relative to the wedge surface of the blocking portion 310, and the stopper 400 is driven to compress the elastic member 500 and retract into the accommodating groove 132.

In an alternative embodiment of the present invention, referring mainly to fig. 3, the pin boss 100 has a limiting groove 133 communicated with the accommodating groove 132, the stopping member 400 has a limiting portion 410, and the limiting portion 410 is matched with the limiting groove 133 to limit the stopping member 400 to rotate in the accommodating groove 132.

Preferably, the position-limiting part 410 is disposed on a sidewall of the main body of the stopper 400, and the position-limiting part 410 protrudes from the sidewall. When the stopping member 400 is located in the receiving groove 132, the limiting portion 410 cooperates with the limiting groove 133 to limit the rotation of the stopping member 400 in the receiving groove 132, so that the stopping member 400 can only move in a direction extending out of the receiving groove 132 or retracting into the receiving groove 132. Thereby preventing the stopper 400 from rotating on its own, causing the wedge surface to deflect, so that the stopper 400 cannot be automatically retracted by the driving of the swing jaw 300.

In an alternative embodiment, referring mainly to fig. 1-3, the pin holder 100 includes an upper cover plate 110, a clamping plate 120, and a bottom plate 130, which are stacked, the upper cover plate 110 has a first notch 111, the clamping plate 120 has a second notch 121, and the bottom plate 130 has a third notch 131.

The second notch 121 is provided with a first notch cavity 010 and a second notch cavity 020 which are communicated, and the first notch 111, the first notch cavity 010 and the third notch 131 are communicated to form a clamping groove 140.

The pawl is rotatably coupled between the upper cover plate 110 and the base plate 130 and is disposed in the second slot chamber 020.

Preferably, the upper cover plate 110 has a first mounting hole 113, the clamp plate 120 has a second mounting hole 122, and the bottom plate 130 has a third mounting hole 134. The upper cover plate 110, the clamp plate 120, and the base plate 130 are stacked, and the upper cover plate 110, the clamp plate 120, and the base plate 130 are fastened by bolts passing through the first mounting holes 113, the second mounting holes 122, and the third mounting holes 134 and being coupled to nuts.

Preferably, the upper cover plate 110 has a rotation shaft hole 112, the bottom plate 130 also has a rotation shaft hole 112, when the upper cover plate 110, the clamping plate 120 and the bottom plate 130 are stacked, the rotation shaft hole 112 of the upper cover plate 110 is disposed corresponding to the rotation shaft hole 112 of the bottom plate 130, and the rotation shaft 320 is rotatably mounted in the two rotation shaft holes 112.

Preferably, the swing jaw 300 is disposed in the second slot cavity 020 of the second notch 121, and the blocking portion 310 can rotate into the first slot cavity 010, so that the blocking portion 310 can block the opening of the card slot 140.

The present embodiment further provides a self-locking rotary excavator, including: an upper rotary vehicle body, a lower vehicle body and the bolt device.

The pin holder 100 is mounted to the lower vehicle body, and the pin member 200 is mounted to the upper swing vehicle.

The upper revolving vehicle body corresponds to the revolving unit, and the lower revolving vehicle body corresponds to the fixing unit.

Preferably, the upper swing car body is provided with a pin hole through which the pin member 200 can be inserted, and during the rotation of the upper swing car body, the pin member 200 inserted through the pin hole can be inserted into the engaging groove 140 of the pin base 100 from the opening, and the stopper 400 locks the reverse rotation of the swing claw 300, thereby preventing the pin member 200 from coming out of the engaging groove 140, and further locking the rotation of the upper swing car body relative to the lower car body.

Further, the pin boss 100 may be attached to the upper swing vehicle body, and the pin 200 may be attached to the lower vehicle body.

The pinhole has been seted up to the automobile body down, and in this pinhole can be worn to locate by round pin piece 200, go up gyration automobile body rotation in-process, can drive key seat 100 and rotate to make key seat 100 and round pin piece 200 relative motion, wear to locate in the draw-in groove 140 that the opening inserted key seat 100 can be followed to round pin piece 200 of pinhole, the reverse gyration of retainer 400 locking gyration jack catch 300, thereby prevent that round pin piece 200 from deviating from draw-in groove 140, and then the rotation of gyration automobile body for lower automobile body is gone up in the locking.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims (10)

1. A deadbolt assembly for locking relative rotation between a rotating member and a stationary member, said deadbolt assembly comprising a keyway (100), a pin member (200), and a pawl, one of said keyway (100) and said pin member (200) being mounted to said rotating member and the other being mounted to said stationary member;

the clamping jaw is arranged on the pin holder (100), and the pin holder (100) is provided with a clamping groove (140) and an opening communicated with the clamping groove (140);

the opening is arranged upstream of the clamping groove (140) along the movement direction of the pin member (200) relative to the pin holder (100), and after the pin member (200) is inserted into the clamping groove (140) through the opening, the clamping claw can block the pin member (200) from being pulled out of the clamping groove (140) from the opening.

2. The deadbolt assembly of claim 1, wherein said jaw is a pivoting jaw (300), said pivoting jaw (300) being lockably rotatably connected to said keyway (100).

3. The latch device according to claim 2, wherein the rotary jaw (300) has a rotating shaft (320) and a plurality of blocking portions (310) fixed to the rotating shaft (320), the plurality of blocking portions (310) are arranged at intervals along the circumference of the rotating shaft (320), and the rotating shaft (320) is rotatably connected to the pin holder (100);

any one of the blocking portions (310) has a blocking position capable of blocking the pin member (200) and a locking position locking the rotary claw (300).

4. The deadbolt assembly of claim 3, further comprising a stop (400), said stop (400) movably coupled to said keyway (100);

the stop piece (400) can be clamped with at least one blocking part (310) at the locking position to lock the reverse rotation of the rotation claw (300).

5. The deadbolt assembly of claim 4, wherein said pin boss (100) has a receiving slot (132), said stop member (400) being protrudably disposed in said receiving slot (132);

when the pin piece (200) is inserted into the clamping groove (140), the stop piece (400) extends out of the accommodating groove (132) and is clamped with the blocking part (310) at the locking position.

6. The deadbolt assembly of claim 5, wherein a resilient member (500) is disposed between a bottom of said receiving slot (132) and said stop member (400), said resilient member (500) having a tendency to move said stop member (400) out of said receiving slot (132) at all times.

7. The deadbolt assembly of claim 6, wherein said stop member (400) has a wedge surface, said stop portion (310) rotating and sliding along said wedge surface of said stop member (400) to drive said stop member (400) to retract into said receiving slot (132);

and/or the blocking part (310) is provided with a wedge surface, and the blocking part (310) rotates to enable the stopper (400) to slide along the wedge surface of the blocking part (310) so as to drive the stopper (400) to retract into the accommodating groove (132).

8. The latch device according to claim 7, wherein the pin holder (100) has a stopper groove (133) communicating with the receiving groove (132), and the stopper (400) has a stopper portion (410), and the stopper portion (410) is engaged with the stopper groove (133) to restrict the stopper (400) from rotating in the receiving groove (132).

9. The latch device according to any of claims 2-8, characterized in that said pin holder (100) comprises an upper cover plate (110), a clamping plate (120) and a bottom plate (130) arranged in a stack, said upper cover plate (110) having a first notch (111), said clamping plate (120) having a second notch (121), said bottom plate (130) having a third notch (131);

the second notch (121) is provided with a first notch cavity and a second notch cavity which are communicated, and the first notch (111), the first notch cavity and the third notch (131) are communicated to form the clamping groove (140);

the claw is rotatably connected between the upper cover plate (110) and the bottom plate (130) and is arranged in the second groove cavity.

10. A self-locking rotary excavator, comprising: an upper swing car body, a lower swing car body, and the latch device of any one of claims 1-9;

the pin seat (100) is arranged on the lower vehicle body, and the pin piece (200) is arranged on the upper rotary vehicle;

alternatively, the pin holder (100) is attached to the upper swing car body, and the pin member (200) is attached to the lower car body.

Images