CN107002392A - Ground engagement instrument - Google Patents

Abstract

Lock (60) for ground engagement instrument (30) can have the head portion (80) with least one compressible Sprag (67).The lock can also include the C-shaped skirt section extended from head portion.The skirt section can limit the locked groove (62) that the pillar (23) that instrument is locked together is engaged with ground for receiving.Instrument can have interior section (100).The instrument can also have the outer surface (101) of the leading edge (31) of restriction instrument.In addition, instrument can have and leading edge relative rear surface (102) substantially.Interior surface can be connected to outer surface by surface afterwards.Instrument can also include lock open surfaces (104).Lock open surfaces, which can be limited from interior surface, extends through instrument to the lock opening (40) of outer surface.Lock open surfaces can include the generally circular interior section (105) adjacent with interior surface.Interior section can be limited around the circumferentially positioned groove (107) of lock opening in the tool.In addition, interior section can brake recess (77) along at least one in groove restriction instrument.Lock open surfaces can also include the generally circular exterior section (106) adjacent with outer surface.

Description

Ground engagement instrument

Technical field

The disclosure relates generally to a kind of ground engagement instrument, and is removably attachable to more particularly, to one kind The ground engagement instrument of earthwork machine.

Background technology

Usually using excavator, wheel loader, hydraulic excavating shovel, cable shovel, bucket wheel, bull-dozer and tractor etc. Earthwork machine moves to excavate or set up a separatist regime by force of arms soil or rock, and/or by the work materials of loosening from a place in building site To another place.These earthwork machines include the various earth-working implements for being used to excavating or moving work materials, all Such as scraper bowl or perching knife.Abrasion and the extreme wear of impact that these equipments undergo in may being applied by soil operation.

In order to protect these equipments from abrasion, so that extend the service life of equipment, can be in most destructive and punching Various ground engagement instruments, such as tooth, edge protector and other abrasion structures are provided on the earth-working implements in the region hit Part.These ground engagement instruments are removably attached to by equipment by using the retainer system of customization so that abrasion or The ground engagement instrument of damage can be easily removed and replaced with new ground engagement instrument.

Many retainer systems have been proposed and use it for various ground engagement instruments being removably attachable to soil Square work tool.One example of this retainer system is disclosed in Smith et al. United States Patent (USP) 7,762,015.This is System includes rotation lock, and it, which has, is used to receive the groove for being installed to power tool or the pillar as part thereof of adapter.Should Lock is positioned in retainer bushing, and the retainer bushing is located in the lock chamber of ground engagement instrument.When locking rotation, groove enters Mouth is blocked, and pillar can not skid off groove, and ground engagement instrument is locked into power tool.

Known retainer system still has many problems and/or shortcoming.The various embodiments of the disclosure can be solved One or more problems and/or shortcoming.

The content of the invention

According to an illustrative aspect, this disclosure relates to a kind of ground engagement instrument.The instrument may include interior surface.Should Instrument can also include the outer surface of the leading edge of restriction instrument.In addition, the instrument can include it is substantially relative with leading edge Rear surface.Interior surface can be connected to outer surface by surface afterwards.Instrument can also include lock open surfaces.Lock opening table Face can limit lock opening and extend through instrument to outer surface from interior surface.Lock open surfaces can include and interior surface Adjacent generally circular interior section.Interior section can be limited around the circumferentially positioned groove of lock opening in the tool. In addition, interior section can brake recess along at least one in groove restriction instrument.Locking open surfaces can include and internal table The adjacent generally circular interior section in face.

In another illustrative aspect, this disclosure relates to a kind of ground engagement tool assembly.The component can include ground Engagement instrument and the lock for the instrument.The instrument also includes interior surface.The instrument can also include the front of restriction instrument The outer surface of edge.In addition, the instrument can include with leading edge relative rear surface substantially, and interior surface is connected to outer Portion surface.Lock open surfaces, which can be limited from interior surface, extends through instrument to the lock opening of outer surface.Lock open surfaces The generally circular interior section adjacent with interior surface can be included.Interior section can in the tool be limited and opened around lock The circumferentially positioned groove of mouth.In addition, interior section can brake recess along at least one in groove restriction instrument.Lock open surfaces The generally circular exterior section adjacent with outer surface can be included.Lock can include having at least one compressible braking The head portion of convex portion.The lock can also include the C-shaped skirt section extended from head portion.Skirt section can be limited for reception and work Has the locked groove of the pillar locked together.

In another illustrative aspect, this disclosure relates to a kind of ground engagement tool assembly.The component can include ground Engagement instrument and the lock for the instrument.The instrument also includes interior surface.The instrument can also include the front of restriction instrument The outer surface of edge.In addition, the instrument can include with leading edge relative rear surface substantially, and interior surface is connected to outer Portion surface.Instrument can also include lock open surfaces, and it can limit from interior surface and extend through instrument to outer surface Lock opening.Lock open surfaces can include the generally circular interior section adjacent with interior surface.Interior section can be Limited in instrument around the circumferentially positioned groove of lock opening.In addition, interior section can be along at least one in groove restriction instrument Brake recess.Lock open surfaces can also include the generally circular exterior section adjacent with outer surface.Lock can include Head portion with least one Sprag, the detent projection can have part at least partly spherical in shape.The lock may be used also With including the C-shaped skirt section extended from head portion.Skirt section can limit the locked groove for receiving the pillar locked together with instrument.

Brief description of the drawings

Fig. 1 is the multiple ground engagements that are attached to loading shovel of having according to an exemplary embodiment of the disclosure The perspective view of the loading shovel of instrument；

Fig. 2 is the perspective view of the tooth assembly of an exemplary embodiment according to the disclosure；

Fig. 3 is the sophisticated perspective view of the tooth assembly shown in Fig. 2, and lock is located in the lock opening at tip；

Fig. 4 is that Fig. 2 tooth assembly is in the partial sectional view of assembled state；

Fig. 5 is Fig. 3 sophisticated perspective view, and no-fix has lock in any lock opening at tip；

Fig. 6 is the Partial Resection view of a Fig. 5 sophisticated opening.

Fig. 7 is the perspective view of the lock of an exemplary embodiment according to the disclosure；

Fig. 8 is another perspective view of Fig. 7 lock；

Fig. 9 is the top view of Fig. 7 lock；

Figure 10 is the bottom view of Fig. 7 lock；

Figure 11 is the cross-sectional view of the lock of an exemplary embodiment according to the disclosure；

Figure 12 is the top view of the lock of an exemplary embodiment according to the disclosure；

Figure 13 is the cross-sectional view of the lock of another exemplary embodiment according to the disclosure；And

Figure 14 is the exploded view of the lock of another exemplary embodiment according to the disclosure；

Embodiment

Fig. 1 shows the power shovel component 1 of the exemplary equipment as earthwork machine.Power shovel component 1 includes being used for the scraper bowl 2 of digging operation material in known manner.Scraper bowl 2 can include various ground engagement instruments.For example, Scraper bowl 2 can include the tooth assembly 10 as ground engagement instrument of multiple bottom margins 5 for being attached to scraper bowl 2.Tooth assembly 10 It can use and scraper bowl 2 is fixed to according to the retainer system of the disclosure.Although specific ground engagement tool assembly (example will be combined Such as, tooth assembly 10) the various embodiments of the disclosure are described, but it is to be understood that and the disclosure can apply to any other class The ground engagement instrument or component of type or engage is used., otherwise can be with moreover, it will be appreciated that unless otherwise expressly specified Realized in any other disclosed embodiment and combine one or more features that one embodiment is described.

With reference to Fig. 2, tooth assembly 10 can include being configured to the other suitable of the bottom margin 5 for engaging scraper bowl 2 or equipment The adapter 20 of supporting construction.Tooth assembly 10 can also include being configured to the ground connection for being removably attachable to adapter 20 tip 30.Tooth assembly 10 can also include lock 60, and it is configured to tip 30 being fixed to adapter 20.Tip 30 may bear and make Most of impact and wear and tear that the engagement of industry material is caused, and quickly wear and tear and be more frequently broken than adapter 20.Cause This, can be connected to adapter 20, abrasion by multiple sophisticated 30 and be changed before adapter 20 needs to change.Such as herein will It is described in detail, the various exemplary embodiments of the lock 60 consistent with the disclosure, which can aid in, is attached to ground engagement instrument Dismantled in the supporting construction of equipment and from it.

Adapter 20 can include a pair therebetween limits recess 27 first and second install legs 26,28, for connecing Receive bottom margin 5.The first installation installation leg 28 of leg 26 and second is attached to the bottom of by by using any suitable connection method Adapter 20, can be fixed to the appropriate location on bottom margin 5 by portion edge 5.For example, installing leg 26 and 28 and bottom sides Edge 5 can have corresponding aperture (not shown), and any suitable fastener (such as bolt or rivet) can be inserted by the aperture Enter adapter 20 being held in position in.Alternatively or additionally, leg 26 and 28 is installed and can be soldered to bottom sides The corresponding top surface and basal surface of edge 5.Any other connection side known in the art can alternatively or additionally be used Method and/or configuration.For example, in some exemplary embodiments, adapter may be configured to using any guarantor disclosed herein Adapter is fixed to the suitable supporting construction of equipment by holder system.

Adapter 20 can include the nose 21 extended along forward direction.Nose 21 can be configured to be received in tip 30 Installation cavity 35 in, as shown in Figure 3.Nose 21 can be configured to the support tip 30 during using scraper bowl 2, and when bearing to make It is easy to tip 30 being maintained on nose 21 during the load of industry material.Nose 21 can be included from the extension of each cross side 22,24 Solid strut 23.Pillar 23 can have variously-shaped and size.In one exemplary embodiment, as shown in Fig. 2 pillar 23 can have frusto-conical.As will be described in further detail here, pillar 23 can with lock 60 coordinate with by tip 30 It is fixed to adapter 20.

As shown in the rearview at the tip 30 in Fig. 3, tip 30 can include that the interior surface of installation cavity 35 can be limited 100th, outer surface 101, and can be by the rear surface 102 on the externally connected surface 101 of interior surface 100.As shown in Fig. 2 when outer When portion surface 101 extends forward, it generally can be gradually tapered.For example, when the top 32 of outer surface 101 extends forward When, it can be tilted down, and when the bottom 38 of outer surface 101 extends forward, it can generally be upwardly extended.It is optional Ground is selected, bottom 38 vertically or can generally be extended downwardly when it extends forward.With rear surface 102 relative outer surface substantially 101 can limit the wedge-shaped leading edge 31 at tip 30 in its forward end.

As described above, tip 30 can be fixed to adapter 20 by lock 60.Tip 30, which can have, to be used to accommodate adaptation The various configurations of device 20 and lock 60.For example, in exemplary embodiment as shown in Figure 3 and Figure 5, interior surface 100 can be limited Surely the slit 103 in the cross side 37 at tip 30 is recessed to, to receive the pillar 23 of adapter 20.In addition, as seen in figures 3-6, Lock open surfaces 104 in each in the cross side 37 at tip 30 can limit one locked in opening 40, slit 103 can To extend from rear surface 102.Lock opening 40 can extend to outer surface 101 from interior surface 100 by sidepiece 37, and Lock 60 and the pillar 23 via a reception in groove 103 can be accommodated.Although the exemplary embodiment shown in Fig. 2,3 and 5 exists There are two lock open surfaces 104 (and two lock openings 40), tip 30 can have on the relative cross side 37 at tip 30 The lock open surfaces 104 (and lock opening 40) of varying number and/or arrangement.For example, in certain embodiments, tip 30 can be There are more than one lock open surfaces 104 (and lock opening 40) on each cross side 37, or can be only in single cross side It is upper that there are lock open surfaces 104 (and lock opening 40).

As Figure 4-Figure 6, lock open surfaces 104 can include generally circular interior section 105 and generally circular Exterior section 106.Interior section can be adjacent with interior surface 100, and exterior section 106 can be with the phase of outer surface 101 It is adjacent.In certain embodiments, interior section 105 and exterior section 106 can be with generally cylindrical.In these embodiments, outside Portion part 106 can have than the less diameter of interior section 105, to prevent lock 60 from passing completely through lock opening 40.In other realities Apply in example, one or two in interior section 105 and exterior section 106 can be in generally frustoconical, to prevent lock 60 pass completely through lock opening 40.

In certain embodiments, interior section 105 can be configured to guiding and intermittently forbid lock 60 in lock 40 inward turnings of opening Turn.For example, interior section 105 can be limited in tip 30 around lock 40 circumferentially positioned grooves 107 of opening.Groove 107 can Interacted with one or more Sprags 67 with lock 60, (Fig. 4 is referred to ensure that lock 60 rotates around lock rotation axis 65 And Fig. 6), and without departing from lock opening 40.In certain embodiments, no matter lock how 60 rotate, groove 107 can be with one Or multiple Sprags 67 interact to ensure lock 60 without departing from lock opening 40.In other embodiments, interior section 105 One or more passage (not shown) that interior surface 100 is extended to from groove 107 can be limited, to rotate to certain when lock 60 Lock 60 is allowed to deviate from from lock opening 40 during one position, wherein one or more Sprags 67 and one or more channel alignments. Interior section 105 can also limit at least one braking recess 77 along groove 107 in tip 30, and groove 107 can be with lock 60 one or more Sprags 67 interact, so as to forbid lock 60 to revolve when being engaged with one or more Sprags 67 Turn.For example, interior section 105 can limit two braking recesses 77 in tip 30 along groove 107.These braking recesses 77 About 180 degree can be spaced, intermittently to forbid lock 60 to be rotated with the interval of 180 degree.

As shown in Fig. 4,6 and 7, braking recess 77 can be formed similarly to Sprag 67, with optimization and Sprag 67 engagement.For example, braking recess 77 can at least partly be spherical, to optimize the Sprag 67 spherical with least part Engagement.Or, braking recess 77 can otherwise shape.If for example, Sprag 67 is at least part football Or bullet shaped, then braking recess 77 can at least partly be football or bullet shaped.

As described above, lock opening 40 can accommodate and allow lock 60 to be rotated around lock rotation axis 65.As illustrated in figures 4 and 7, lock 60 can include head portion 80, and the head portion 80 can have top section 108 and base section 109.In addition, lock 60 can be with Including the C-shaped skirt section 63 extended from base section 109, and limit the locked groove 62 for receiving pillar 23.With reference to head portion 80 top section 108 and base section 109, skirt section 63 can limit the outer surface 66 of lock 60, and it can be configured to rotatably In the lock opening 40 for being contained in tip 30.For example, outer surface 66 can have the cylinder essentially identical with lock opening 40 (as schemed It is shown) or conical butt profile.Especially, outer surface 66 can be circular and circumferentially prolong around lock rotation axis 65 Stretch.Although the part of the head portion 80 of outer surface 66 can extend completely around lock rotation axis 65, the outer surface in skirt section 63 66 part can be only in the part extension of lock rotation axis 65.When the outer surface 66 for locking 60 is so configured, lock 60 can So that in lock opening 40, the part of the outer surface 66 of top section 108 and the exterior section 106 of lock opening 40 coordinate, and The remainder of outer surface 66 is coupled to the interior section 105 of lock opening 40.As shown in the figure.As shown in figure 4, when lock 60 is located at lock When in opening 40, lock rotation axis 65 can be approximately perpendicular to the part of the outer surface 101 around the tip 30 of lock opening 40. Or, lock rotation axis 65 can relative to outer surface 101 the part at an angle.

As described above, lock 60 can include one or more Sprags 67, groove 107 and system that it can be with tip 30 Dynamic recess 77 interacts, to guide and intermittently forbid rotation of the lock 60 in lock opening 40.As illustrated in figures 4 and 7,60 are locked The base section 109 of head portion 80 can include these Sprags 67.For example, base section 109 can include two extremely Small part Sprag 67 spherical in shape, its about 180 degree that can be spaced apart from each other.Selectively, base section 109 can include Additional amount of Sprag 67, and this Sprag 67 may or may not be roughly equidistant along base section 109 It is circumferentially spaced.In another alternative scheme, Sprag can otherwise shape.For example, Sprag 67 can be with In football or bullet shaped.

According to an exemplary embodiment, tip 30 and lock 60 can be made up of metal.For the ease of Sprag 67 With engagement/disengaging of braking recess 77, therefore Sprag 67 can be compressible.That is, although Sprag 67 Generally can be from the outstanding distance 110 (referring to Fig. 9) in outer surface 66 for locking 60, but Sprag 67 can be compressed, with Just from the outstanding distance less than distance 110 in outer surface 66.When lock 60 is inserted along the direction for being roughly parallel to lock rotation axis 65 When entering lock opening 40, this compression can allow interior section 105 of the Sprag 67 along lock open surfaces 104 to slide.One Denier lock 60 is fully-inserted, and Sprag 67 can expand and engage groove 107.This engagement can prevent lock 60 from lock opening 40 Come off.When locking 60 rotation, Sprag can be slided along groove 107, finally further expand the braking with engaging tip 30 Recess 77.This engagement can prevent further rotating for lock 60.However, it is possible to realize lock 60 by compression brake convex portion 67 Further rotate and/or remove, so as to allow Sprag to depart from braking recess 77 and/or groove 107.

Lock 60 may be configured to receive at least a portion of the pillar 23 of adapter 20.For example, as Fig. 8 and Figure 10 is optimal Shown, locked groove 62 can have between two circumferential ends in skirt section 63 and the blind end 68 adjacent with the center section in skirt section 63 Openend 69.In certain embodiments, locked groove 62 can have size and dimension so that it can accommodate the butt of adapter 20 Conical boss 23.The inner surface 64 in skirt section 63 can be inclined, so as to the adapter with the blind end 68 of neighbouring locked groove 62 20 frusto-conical boss 23 coordinates.

As described above, lock 60 may be mounted in lock opening 40, wherein the outer surface 66 of lock 60 coordinates to lock open surfaces 104, the braking recess 77 of the engaging tip 30 of Sprag 67 of lock 60.When lock 60 is arranged on the position, the opening of locked groove 62 End 69 can be towards rear.The position allows pillar 23 to be slidably inserted into and remove locked groove 62 by openend 69.Therefore, lock 60 should Position is considered unlocked position.

In order to which pillar 23 is locked in locked groove 62, lock 60 can rotate to latched position around lock rotation axis 65. The latched position, the part in the lock skirt section 63 adjacent with blind end 68 can prevent slip of the pillar 23 relative to locked groove 62 from transporting It is dynamic, so as to prevent tip 30 relative to the sliding motion of adapter 20.The latched position of lock 60 can be apart from around lock rotary shaft The unlocked position of line 65 is into about 180 degree.As in unlocked position, the Sprag 67 of lock 60 can be engaged in latched position The braking recess 77 at tip 30, lock 60 releasedly can be maintained at latched position by it.

In certain embodiments, lock 60 and tip 30 may be configured to provide the instruction of unlock/lock position.For example, As shown in figure 3, lock 60 can include triangle 111 on its head portion 80, and tip 30 can be near lock opening 40 Its outer surface 101 on include lock locking/unlocking indicator 112,113.When triangle 111 points to lock indicator 112, lock 60 can be at latched position.On the contrary, when triangle 111 points to lock indicator 112, lock 60 can be at unlocked position.

Referring to shown in Fig. 3,7 and 9, lock 60 can also include the tool interface 84 in head portion 80, so as to around lock rotation The rotation lock 60 of axis 65.Tool interface 84 can include being configured to any kind of feature by tool engagement, for around Lock rotation axis 65 and apply torque to lock 60.For example, tool interface 84 can include having being configured to engaging socket driver The socket recess of the cross section of (such as box spanner).When lock 60 is seated in lock opening 40, the head of tool interface 84 is limited Portion part 80 can at least partly extend through lock opening 40, and lock opening 40 entrance opening can be provided for instrument and engage Tool interface 84.

The ground engagement instrument of the disclosure and associated retainer system are not limited to above-mentioned example configuration.For example, ground Face engagement tool assembly 10 can be using varying number and the lock opening 40 of configuration, pillar 23 and/or lock 60.In addition, ground engagement Tool assembly 10 replaces adapter 20 and pillar 23 can be using one for being fixed to or being integrally formed with suitable supporting construction Or multiple pins.

Some illustrative aspects of the disclosure can be provided for ground engagement instrument to be removably attachable into equipment The various alternative and/or additional configurations of the retainer system of appropriate supporting structure.For example, the further repacking to lock can change Enter the performance associated with reservation system or reduce cost.In the following description, the various embodiments of lock are disclosed.

It should be noted that in the following description, only highlighting feature unlike the embodiments above, and save Slightly to the detailed description of above-described embodiment identical feature.

Figure 11 shows the lock 160 according to an exemplary embodiment.Lock 160 can include integrally formed head portion 180.As shown in figure 11, the Sprag 167 of lock 160 can include at least part portion spherical in shape being located in the hole 189 of lock 160 Divide 182.In addition, Sprag 167 can include the elastic part 183 being located in hole 189.Elastic part 183 can pass through lock The 160 outside biased sections 182 in outer surface 188, but the outer end 191 in hole 189 (can be bent or be shaped) by die forging, to prevent Stop point 182 leaves hole 189.As illustrated, elastic part 183 can be spring.Selectively, elastic part can be rubber Glue, foam or another type of elastomeric material.

Figure 12 shows the lock 260 according to an exemplary embodiment.Lock 260 can be differently configured from lock 160, simply at least portion Part 282 spherical in shape is divided to be at least partially situated in opening to the hole 289 of the top surface 292 of lock 260.Such hole 289 Before or after the outer end 291 in hole 289 is by die forging part 282 can allowed to be arranged in hole 289.

Figure 13 shows the lock 360 according to another exemplary embodiment.Lock 360 can include integrally formed head Divide 380.As shown in figure 13, at least part that the Sprag 367 of lock 360 can include being located in the hole 389 of lock 360 is spherical in shape Part 382.In addition, Sprag 367 can include the elastic part 383 being located in hole 389.Elastic part 383 can pass through The outside biased sections 382 in outer surface 388 of lock 360, but sleeve cap 398 is inserted into 389 leaving with preventing portion point 382 Hole 389.In certain embodiments, sleeve cap 398 can be press-fitted into hole 389.In other embodiments, sleeve cap 398 can be with With being threadedly coupled to hole 389.Or, sleeve cap 398 otherwise (for example, with glue) can permanently or removably connect It is connected to hole 389.As illustrated, elastic part 383 can be spring.Selectively, elastic part can be rubber, foam or another The elastomeric material of one type.

Figure 14 shows the lock 460 according to another exemplary embodiment.Lock 460 can include two pieces head portion, its Including top part 481 and bottom parts 482, it can be linked together by pin 486.When connected together, top part 481 and bottom Part 482 can limit hole 489.The Sprag 467 of lock 460 can include at least partly part 483 spherical in shape, and it can be down to It is at least partially located in hole 489.In addition, Sprag 467 can include the elastic part 484 being located in hole 489.Elastic part 483 can be by the outside biased sections 483 in outer surface 488 of lock 460, but the outer end 491 in hole 489 can be (i.e. curved by die forging Bent or shaping), hole 489 is left with preventing portion point 483.As illustrated, elastic part 484 can be spring.Selectively, it is elastic Part can be rubber, foam or another type of elastomeric material.

Industrial applicibility

Disclosed retainer system and ground engagement tool assembly go for various earthwork machines, for example, excavate Machine, wheel loader, hydraulic excavating scraper bowl, cable shovel, bucket wheel, bull-dozer and dragline.When seated, disclosed guarantor Holder system and ground engagement tool assembly can protect the various equipments associated with earthwork machine occurring most to break Abrasion is resisted in the region of abrasion and the impact of bad property, so as to extend the service life of equipment.

Ground engagement instrument can be safely and reliably attached to various earthworks by the configuration of disclosed various parts Equipment and from its dismounting, and can have better than previous retainer system various advantages.For example, disclosed configuration can So that including the part less than previous retainer system, it includes being used to that the bushing being maintained in latch well will to be locked.As another One example, the configuration of disclosed lock opening and lock may lack the complicated shape of previous retainer system, simplify it Construction and reduce the stress in part.As another example, between disclosed Sprag and braking recess Metal to metal contact, which can aid in, is during transportation maintained at disclosed lock in corresponding lock opening, even in possible It is also such at a high temperature of distortion non-metallic component.The operation of disclosed component will now be described.

Disclosed lock 60 is configured to coordinate with lock open surfaces 104, and the lock open surfaces 104 limit the lock at tip 30 Opening.In order to which tip 30 is attached into adapter 20, lock 60 is arranged in lock opening 40, and slit 103 is extended in the opening 40, The pillar 23 of adapter 20 is allowed to pass through.Once pillar 23 is inserted into the inside of locked groove 62, lock 60 can be around lock rotation axis 65 Rotate to closing position.At the position, the part in the lock skirt section 63 adjacent with blind end 68 can prevent cutting pillar 23 Head conical portion is slid or inserted into locked groove 62, so as to prevent tip 30 relative to the sliding motion of adapter 20.Lock 60 Sprag 67 can latched position engaging tip 30 braking recess 77, lock releasedly 60 can be maintained at locking by it Position.

In order to which tip 30 is separated from adapter 20, lock 60 rotates to unlocked position from latched position, so that Sprag 77 are disengaged from braking recess 67.When locking 60 around the lock rotation of rotation axis 65, once Sprag 77 and braking recess 67 It is disengaged from, the outer surface 66 of lock 60 can be slided along the lock open surfaces 104 at tip 30.Once lock 60 is around lock rotation axis 65 rotations about 180 degree, then Sprag 77 and braking recess 67 can be re-engaged to releasably hold on lock 60 each other In the rotation position.

It will be apparent to one skilled in the art that various modifications and change can be carried out to the disclosed embodiments Change.After the explanation of open embodiment disclosed herein and realization is considered, other embodiments are for those skilled in the art Member is also obvious.What specification and example were merely exemplary, true scope is by appended claims and its equivalence Content is pointed out.

Claims (10)

1. one kind is used for the lock (60) of ground engagement instrument (30), comprising：

Include the head portion (80) of at least one compressible Sprag (67)；And

The C-shaped skirt section (63) extended from the head portion, the skirt section is limited for receiving and the ground engagement instrument one Play the locked groove (62) of locked pillar (23).

2. lock according to claim 1, wherein the head portion and the skirt section limit outer surface (66), the appearance Face is configured to be rotatably received within the lock opening (40) of the ground engagement instrument, and at least one can be pressed described in When the Sprag of contracting is uncompressed, it is outwardly protruded from described.

3. lock according to claim 2, wherein the head portion includes two compressible Sprags (67).

4. lock according to claim 3, the about 180 degree wherein the compressible Sprag is spaced apart from each other.

5. lock according to claim 2, wherein the outer surface is usually cylinder.

6. lock according to claim 2, wherein at least one described compressible Sprag is including at least partly spherical in shape Part.

7. lock according to claim 6, wherein at least one described compressible Sprag includes elastic part (183), By described at least part part spherical in shape, outwards bias passes through the outer surface for it.

8. a kind of ground engagement tool assembly (10), comprising：

Ground engagement instrument (30), it includes：

Interior surface (100)；

Outer surface (101), it limits the leading edge (31) of the instrument；

Surface (102) afterwards, it is substantially relative with the leading edge, and the interior surface is connected into the outer surface；With And

Open surfaces (104) are locked, it limits the lock for extending through the instrument to the outer surface from the interior surface and opened Mouth (40), and including：

The interior section (105) of circular, it is adjacent with the interior surface and circumferentially positioned around the lock opening The instrument in limit groove (107)；And

The exterior section (106) of circular, it is adjacent with the outer surface；

Wherein described interior section limits at least one braking recess (77) in the instrument along the groove；And

Lock as claimed in claim 1.

9. component according to claim 8, wherein when outside the lock limited by the head portion and the skirt section When surface (66) is rotatably received within the lock opening of the instrument, at least one described compressible braking of the lock Convex portion engages the groove in the instrument.

10. component according to claim 9, wherein：

The outer surface limits the lock locking/unlocking indicator (112,113) adjacent with the lock opening；And

When the lock locking/unlocking indicator indicates that the pillar is locked into the instrument, the lock it is described at least one Compressible Sprag engages at least one described braking recess of the instrument.