JPH0443125B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Technical Field> The present invention relates to a bucket cart used by being attached to an earthmoving vehicle.

<Prior Art> Generally, bucket carts for earthmoving vehicles are widely known to have a bucket main body having a pair of side plates and a front plate and a rear plate fixed between the pair of side plates. In such a bucket, a pair of side plates and a front plate define a bucket storage space for storing earth and sand, and the upper center of the bucket main body (in two places in some cases) is connected to the tilt link of an earthmoving vehicle (large vehicle (some models have two), and the lower portions on both sides are connected to a pair of lift arms of an earthmoving vehicle.

However, in the conventional bucket bag mentioned above,
The following problems existed. That is, when handling materials with good fluidity such as sand and gravel, when discharging from the bucket, the materials (sand, gravel, etc.) accommodated in the bucket storage space are discharged as required; On the other hand, when handling sticky soil such as clayey soil, soil etc. adheres to the inner surfaces defining the bucket storage space, that is, the surfaces of the side plates and front plate, and when discharging from the bucket, the soil, etc. There was a problem in that the material to be accommodated in the accommodation space (clay soil, etc.) was not discharged as required, resulting in poor discharge performance of earth and sand. The above-mentioned problem can be solved by bucket trucks applied to earthmoving vehicles that adopt a so-called Z-bar linkage (a system in which one or two tilt links are positioned between a pair of lift arms in the lateral direction) as a bucket linkage system. This was particularly the case. To explain further, the soil and sand adhering to the bucket are dropped by the damping shock (impact that occurs at the end of the discharge operation) during the normal discharge operation, and this improves the discharge effect somewhat, but the Z-bar linkage In this case, the speed decreases rapidly at the final stage of the discharge operation (so-called final dumping time).
There is little improvement in the discharge effect due to the damping shock, and the discharge performance of earth and sand deteriorates. In addition, conventionally, to remove soil and sand attached to the bucket, the bucket is repeatedly discharged many times, and if the discharge operation is repeated, the bucket, lift arm, etc. may be damaged. I was afraid.

On the other hand, in Japanese Patent Publication No. 48-11122, a bucket main body (outer shell structure) connected to the tip of the boom
A bucket bag device is disclosed that includes a bucket bag and a discharge blade (discharge plate) swingably supported at the front upper part of a bag bag main body. This device is provided with a locking mechanism (discharge plate fixing fitting) that locks the discharge blade at the rear position with respect to the bucket main body. The boom is equipped with a cam, and when the bucket main body is swung forward at a certain angle with respect to the boom,
The locking mechanism is unlocked by a cam. The back of the discharge blade is connected to a dumpling. According to this bucket device, highly viscous cargo can be discharged at a high position. However, since the back of the discharge blade is connected to the dump ring, for example, when working in the forward direction, there is a risk that a large load will be directly applied to the lock mechanism and it will be damaged, which poses a strength problem.

In addition, the claws of the locking mechanism are configured to protrude from the opening of the bucket body into the storage space and lock the lowest end of the discharge blade, so the claws themselves come into direct contact with dirt, rocks, etc. There is a risk of damage. Therefore, in this respect as well, there is a problem in terms of strength.

<Object of the Invention> The object of the present invention is to provide an improved bucket for an earthmoving vehicle that can reliably discharge the contents stored in the bucket, has a simple structure, and has sufficient reliability in terms of strength. It is to be.

<Summary of the Invention> The present invention includes a bucket main body and a discharge blade disposed within the bucket main body and defining a bucket accommodation space in cooperation with the bucket main body, It is rotatably connected to a pair of soft arms at a lower position on the back surface, and rotatably connected to one end of a tilt link at an upper position thereof, and the other end of the tilt link is rotatably connected between the pair of lift arms. The discharge blade is connected to one end of a link member supported by the bucket storage space, the other end of the link member is connected to a tilting hydraulic cylinder mechanism, and the discharge blade is configured to store objects in the bucket storage space. The bucket body is rotatably mounted on the upper part of the bucket main body so that it can be moved by its own weight between the storage position of the bucket and the discharge position for discharging, and the bucket main body has a mechanism that prevents the discharge blade from moving beyond the discharge position. In a bucket for an earthmoving vehicle equipped with a stop piece, there is a gap between the bucket main body and the discharge blade.
A clock mechanism is provided for releasably holding the discharge blade in the housed position, and the lock mechanism includes an engaging member rotatably provided at a rear position of the bucket main body and a lock mechanism disposed at a rear position of the discharge blade. an engaged pin provided at one end of the engaging member, an engaging portion capable of engaging the engaged pin at the rear position by rotation of the engaging member; When the bucket main body is pivoted via the tilt link in a direction in which the bucket storage space faces downward, the tilt link abuts the other end of the engagement member and causes the engagement member to pivot. When the engagement with the engaged pin is released and the bucket main body is pivoted via the tilt link in a direction in which the bucket housing space faces upward, the engaged pin is disengaged from the engagement member. Provided is a bucket for an earthmoving vehicle, characterized in that it is configured to be engaged with the engaging portion by abutting one end side and rotating the engaging member.

<Preferred Specific Example of the Invention> Hereinafter, a specific example of a bucket cart for an earthmoving vehicle constructed according to the present invention will be described with reference to the accompanying drawings.

Referring to FIG. 1, which is a rear view of the bucket bag, and FIG. 2, which is a sectional view taken along the line - in FIG. A discharge blade 6 is provided. The bucket body 4 has a bottom wall plate 8 and side plates 10 and 12 fixed to both ends of the bottom wall plate 8 and extending upwardly from the bottom wall plate 8. Mainly referring to FIG. 2, a pair of connecting members are provided at the rear end portions (left end portions in FIG. 2) of the side plates 10 and 12 in the front-rear direction (horizontal direction in FIG. 2) at intervals in the vertical direction. 14 and 16 are arranged, and both ends of the connecting members 14 and 16 are connected to the side plate 1, respectively.
0 and 12, and the lower end of a connecting member 16 located further below is fixed to the rear end of the bottom wall plate 8 in the front-rear direction. The connecting member 14 is composed of a hollow member having a substantially rectangular cross section, which is formed by fixing a member 18 having a substantially U-shaped cross section and a plate-like member 20 having a somewhat curved shape by welding or the like. The connecting member 16 is constituted by a hollow member having a substantially rectangular cross section, which is formed by fixing members 22 and 24, each having a substantially L-shaped cross section, to each other by welding or the like. A bottom wall plate 26 is arranged somewhat above the bottom wall plate 8, its front end in the front-rear direction is fixed to the front end upper surface of the bottom wall plate 8, and its rear end in the front-rear direction is fixed to the front surface of the connecting member 16,
Also, in the lateral direction (left and right direction in Figure 1,
Both ends (in the direction perpendicular to the plane of the drawing) are fixed to the inner surfaces of the side plates 10 and 12. This bottom plate 26 is slightly curved upward from the front to the rear in the longitudinal direction. A cutting edge 28 is provided at the front lower end of the bucket main body 4, in other words, at the front ends of the bottom wall plate 8 and the bottom plate 26, over substantially the entire width in the lateral direction. Mainly referring to FIG. 1, on the back side of the bucket main body 4, there are three sets of connecting brackets 30,
32 and 34 are provided. The intermediate connecting bracket 30 is comprised of a pair of bracket members 36 fixed to the rear surfaces of the connecting members 14 and 16, and is located substantially centrally laterally between the side plates 10 and 12. ing.
Further, the connecting brackets 32 and 34 located on both sides of the connecting bracket 30 are respectively composed of a pair of bracket members 38 and 40 fixed to the back surfaces of the connecting members 14 and 16, and the connecting brackets 30 are spaced substantially equidistantly from each other on both sides. The embodiment further includes three laterally spaced mounting bracket portions 42, 44 and 46 on the top of the bucket body 4. A mounting bracket section 42 disposed substantially in the lateral center of the bucket main body 4 is composed of a pair of bracket members 48 fixed to the upper surface of the connecting member 14 at a distance, and is attached to the left end of the bucket main body 4. Mounting bracket part 44 arranged
is an upper end portion 1 projecting upwardly of the side plate 10.
0a and a bracket member 50 fixed to the upper surface of the connecting member 14, and the bucket main body 4
The mounting bracket part 46 disposed at the right end of the
Upper end portion 12a projecting upwardly of side plate 12
and a bracket member 52 fixed to the upper surface of the connecting member 14. Further, an upper plate 54 is disposed on the front side of the upper end of the bucket main body 4 over substantially the entire width in the lateral direction, and the back surface of the upper plate 54 is connected to the mounting brackets 42 and 44.
and 46. Furthermore, in the specific example, mounting bracket portions 42 and 44
An auxiliary plate 56 is disposed between the upper plate 54 and the mounting bracket portions 42 and 46, and the auxiliary plate 56 is connected to the back surface of the upper plate 54 and the connecting member 14.
is fixed on the top surface. In addition, the bucket body 4
Auxiliary members 58 and 60 are disposed at the lower end, the auxiliary member 58 is fixed between the side plate 10 and one bracket member 38 of the connecting bracket 32, and the auxiliary member 60 is fixed between the side plate 12 and the connecting bracket 34. It is fixed between one bracket member 40.

The bucket main body 4 described above is attached to an earthmoving vehicle such as a loader in the following manner. Figures 1 and 2
Referring to FIG. 3-A together with the drawings, one end of a tilt link 62 of an earthmoving vehicle is connected to the connecting bracket 30 located at the center. That is, the tilt link 62 is rotatably connected to boss portions provided at the upper portions of the pair of bracket members 36 of the connection bracket 30 via the pin member 64. In addition, a pair of lift arms 66 (FIGS. 2 and 3) of the earthmoving vehicle are attached to the connecting brackets 32 and 34 located on both sides.
(only one is shown in Figure A) are connected. That is, one lift arm 66 is rotatably connected to the boss portion provided at the lower part of the pair of bracket members 38 of one connection bracket 32 via a pin member 68, and the pair of bracket members 38 of the other connection bracket 34 are connected to each other via a pin member 68. The other lift arm (not shown) is rotatably connected to the boss portion provided at the lower part of the lift arm 40 via a pin member (not shown). Mainly referring to FIG. 3-A, a pair of lift arms 6
6 is rotatably mounted on an earth-moving vehicle (not shown), and a lift hydraulic cylinder mechanism 69 is interposed between each lift arm 66 and the earth-moving vehicle. Additionally, a connecting rod 7 is connected between the pair of lift arms 66.
0 is attached to the connecting rod 70, an intermediate portion of a link member 72 is attached so as to be freely pivotable, and the other end portion of the tilt link 62 is rotatably connected to one end portion of the link member 72 via a pin member 74. has been done. Further, a tilting hydraulic cylinder mechanism 76 is interposed between the other end of the link member 72 and the earthmoving vehicle. Therefore, when the lift hydraulic cylinder mechanism 69 is extended (or contracted), the lift arm 66 is rotated counterclockwise (or clockwise) in FIG. 3-A, and the bucket main body 4 is thus raised (or lowered). I am forced to do it. Further, when the tilting hydraulic cylinder mechanism 76 extends (or contracts), the link member 72 is rotated clockwise (or counterclockwise) in FIG. The main body 4 is pivoted counterclockwise (or clockwise) about the pin member 68, and the bucket main body 4 is thus tilted back (or tilt forward).

Referring again to FIGS. 1 and 2, the discharge blade 6 will be described. The illustrated discharge blade 6 has a discharge plate 78. As shown in FIG. Ejection plate 7
8 are the side plates 10 and 12 of the bucket main body 4;
As shown in FIG. 2, it is curved concavely into a desired shape from the upper end toward the lower end. Such discharge plate 7
Three supporting members 80, 82, and 84 are provided on the back surface of the device 8 at intervals in the lateral direction. The support members 80, 82, and 84 are of substantially the same construction and include a pair of spaced apart support plates 86, the front surfaces of which are fixed to the back surface of the ejection plate 78; Support plate 8
A boss member 88 is fixed between the upper end portions of 6, a lower end auxiliary plate 90 is fixed between the lower end portions thereof, and an intermediate auxiliary plate 92 is fixed between the middle portions on the back side thereof. In addition, the discharge plate 78
A plate member 92 projecting downward beyond the lower edge of the rear surface is fixed to the lower end of the rear surface, and a cutting edge 94 is attached to the front surface of the plate member 92 by bolts or the like. The plate member 92 and cutting edge 94 extend substantially over the entire width of the discharge blade 6 at its lower end. The above-described discharge blade 6 is disposed within the bucket main body 4 and cooperates with the bucket main body 4 to define a bucket storage space S. To explain further, in the specific example, the upper end sides of the three support members 80, 82 and 84 of the discharge blade 6 are connected to the discharge plate 78.
It protrudes somewhat upward from the upper end. The upper end of the support member 80 provided substantially in the horizontal center of the discharge plate 78 is connected to the mounting bracket 42 of the bucket main body 4 (more specifically, the pair of bracket members 48 constituting the mounting bracket 42 ) via the pin member 96 . The upper end of a support member 82 (or 84), which is rotatably connected to The mounting bracket 44, more specifically, the space between the upper end 10a of the side plate 10 constituting the mounting bracket 44 and the bracket member 50 (or between the mounting bracket 46,
More specifically, it is rotatably connected to the upper end 12a of the side plate 12 constituting the mounting bracket 46 and the bracket member 52. Therefore,
As can be seen from FIG. 2, the discharge blade 6 has its upper end at a fulcrum point
The bucket main body 4 is pivotable in the front and rear directions as the two pin members 96 constitute a pivot center. Further, the discharge blade 6 is shown in FIGS. 1 and 2.
As can be understood from the figure, a bucket storage space S is defined in cooperation with the bucket main body 4 to accommodate objects such as earth and sand. In a specific example, the bottom plate 26, side plates 10, 12 and top plate 54 of the bucket main body 4, and the discharge plate 78 and cutting edge 94 of the discharge blade 6 define the bucket storage space S.

Associated with the above-described ejector blade 6 is a locking mechanism 98 for releasably holding the ejector blade 6 in the storage position shown in solid lines in FIG. The locking mechanism 98 consists of a combination of an engaging means provided on the bucket main body 4 and an engaged means provided on the discharge blade 6. In the specific example, the engaging means is a combination of a connecting bracket located on the back side of the bucket main body 4. A pair of bracket members 36 constituting 30
It is composed of a pair of engaging members 102 (see FIG. 1) that are rotatably mounted with a pin member 100 interposed therebetween, and the engaged means is a lower part of the support member 80 located at the center of the back surface of the discharge blade 6. It consists of an engaged pin 106 attached to a bracket 104 fixed to the back surface of the auxiliary plate 90. A hook-shaped engaging portion 102a is provided at one end of each of the integrated engaging members 102, and a pin member 108 is fixed between the other ends thereof.
A roller 110 is rotatably attached to the roller 8.
On the other hand, both ends of the engaged pin 106 are connected to the bracket 10.
4 and protrudes on both sides in the lateral direction. Therefore, the pair of engaging members 102 can freely pivot together, and the engaging portion 102a of each engaging member 102 can engage with the corresponding protruding end of the engaged pin 106, as shown in FIG. be. In the illustrative embodiment, the engagement member 102 is configured to be biased clockwise in FIG. 2 by its own weight; A stop piece 112 (constituting a first stop piece) for preventing clockwise rotation beyond the specific position shown is fixed to the inner surface of each bracket member 36 in correspondence with each engaging member 102. . Therefore, a through hole is formed in the back surface of the bucket main body 4. In the specific example, this through hole is formed by the spacing between connecting members 14 and 16. When the discharge blade 6 is in the housed position, the bracket 104 of the discharge blade 6 is positioned so as to protrude from the through hole toward the rear side. Then, the engaging portion 102a of the engaging member 102 engages with the engaged pin 106, and the engaging member 102 is held at the specific position shown in FIG. The matching state is reliably maintained. On the other hand, the engagement state is released by the action of the tilt link 62 described above. To explain further, the engaging member 102 of the locking mechanism 98 is located vertically below the connecting portion of the tilt link 62 to the bucket main body 4, and therefore, when the bucket main body 4 is tilted forward, the tilt link 62 Due to the proximity to the bucket main body 4, the tilt link 62 comes into contact with the roller 110 installed between the pair of engagement members 102, and the engagement member 102 moves closer to the bucket main body 4. Along with the tilt forward movement, it is rotated counterclockwise in FIG. 2, and thus the engaged state between the engaging portion 102a of the engaging member 102 and the engaged pin 106 is released as required.

In addition, in relation to the discharge blade 6, the bucket main body 4 is provided with a stop piece 114 (a second stop) for preventing the discharge blade 6 from turning in the counterclockwise direction beyond the discharge position shown by the two-dot chain line in FIG. composing a piece)
is provided. In the specific example, the stop piece 1
14 are the side plates 10 and 1 of the bucket main body 4;
2 (only one is shown in FIG. 2), and abuts against upper ends of both ends of the cutting edge 94 of the discharge blade 6 in the discharge position.
As shown in FIG. 2, when the discharge blade 6 is in the storage position, the upper plate 54, the discharge plate 78, the cutting edge 94, and the bottom plate 26 form a substantially continuous concave bucket tray on the front side of the bucket tray 2. Define the front.

Next, the effects of the bucket bag 2 having the above-described configuration will be explained with reference mainly to FIGS. 3-A to 3-F. In the following explanation, a case will be explained in which the lift arm 66 is held in a substantially horizontal state, but it may also be applied in other states, such as a state where the lift arm 66 is raised to the maximum extent (full lift state). Almost the same. The state shown in FIG. 3-A in which the lift arm 66 is held horizontally (in FIG. 3-A, the locking mechanism 98 is in the engaged state and the discharge blade 6 is held in the retracted position) , the bucket 2 is also held in a substantially horizontal state), when the tilting hydraulic cylinder mechanism 76 is contracted in order to discharge objects such as earth and sand stored in the bucket 2, the link member 72 and The bucket main body 4 is pivoted around the pin member 68 in a clockwise direction (direction in which the bucket storage space S faces downward) in FIG. 3-A via the tilt link 62. When the tilting fluid pressure cylinder mechanism 76 is slightly contracted from the state shown in FIG. 3-A, it becomes the state shown in FIG. 3-B. That is, as the tilt link 62 is brought closer to the bucket main body 4 due to the contraction of the tilt hydraulic cylinder mechanism 76, the tilt link 62 is moved toward the engagement member 102 held at a specific position. It comes into contact with the mounted roller 110. When the tilt hydraulic cylinder mechanism 76 is further contracted from the state shown in FIG. 3-B, the tilt link 62 is moved to the roller 1.
10 on the engaging member 102, and the engaging member 102 is arranged in a third direction around the pin member 100.
It is rotated counterclockwise as shown by the arrow 116 in Fig. B and enters the state shown in Fig. 3-C. In this way, the engagement state between the engagement portion 102a of the engagement member 102 and the engaged pin 106 is released, and the discharge blade 6
can be rotated freely. Thus, when the locking mechanism 98 is in the released state as described above, the discharge blade 6 pivots around the pin member 96 by its own weight in the counterclockwise direction shown by the arrow 118 in FIG. It is positioned at the discharge position shown in Fig. 3-D (in Fig. 3-D, the chill fluid pressure cylinder mechanism 76 is further contracted from the state shown in Fig. 3-C). When the discharge blade 6 rotates as described above, the front surface of the discharge blade 6 acts from behind on the objects stored in the bucket storage space S to forcibly discharge them forward. Objects such as earth and sand contained in the bucket 2 are reliably discharged from the bucket 2 by the action of the discharge blade 6. Further, when the discharge blade 6 turns to the above-mentioned discharge position, both lower ends thereof (in the specific example, both upper ends of the cutting edge 94) are moved to the bucket main body 4.
(In the specific example, the inner surfaces of the side plates 10 and 12)
The bucket body 4 contacts the stop piece 114 provided at the bucket body 4, and the objects adhered to the bucket main body 4 and the discharge blade 6 are also reliably discharged due to the impact generated at the time of this contact. In the specific example, the lift arm 66 is
When the bucket 2 is in the substantially horizontal state shown in FIGS. contact,
When the bucket 2 is tilted forward approximately 15 degrees from the horizontal state, the engaging portion 102a of the engaging member 102
The engaged state of the engaged pin 106 is completely released. Note that when the lift arm 66 is in the vicinity of the lower position, in other words, when it is in the ground excavation state, although not shown, even if the tilting hydraulic cylinder mechanism 76 is contracted to the maximum extent and the bucket 2 is tilted forward. , the tilt link 62 does not act on the engaging member 102 of the locking mechanism 98, so that the locking state of the locking mechanism 98 is not released. Therefore, in such a state, the discharge blade 6 is held in the stowed position and the excavation work can be carried out as required.

In the case where the object stored in the bucket 2 is discharged as described above and the object is to be stored again in the bucket 2, it is necessary to hold the discharge blade 6 at the storage position. , the tilting hydraulic cylinder mechanism 76 may be extended as required. When the tilting fluid pressure cylinder mechanism 76 is extended from the state shown in FIG. As can be understood from Fig. 3-E, the discharge blade 6 is rotated by its own weight around the pin member 96 in the clockwise direction indicated by the arrow 120 in Fig. 3-E, and is first in the state shown in Fig. 3-E. become. That is, the engaged pin 106 provided on the back surface of the discharge blade 6 comes into contact with the outer surface of the engaging portion 102a of the engaging member 102. When the lift hydraulic cylinder mechanism 76 is further extended from this state, the engaged pin 106 is moved toward the engaging member 1 due to the tilt back of the bucket main body 4.
The pin member 106 acts on the outer surface of the engaging portion 102a of 02 to rotate the engaging member 102 in the counterclockwise direction indicated by the arrow 122 in FIG. Tsute 3rd -
The state shown in Figure F will be reached. That is, the engaging member 102 is rotated in the direction shown by the arrow 122 (FIG. 3-E) and then returned to the specific position, so that the engaging member 1
The engaging portion 102a of 02 engages with the engaged pin 106 as required, and thus the discharge blade 6
It is securely held in the storage position as shown in Figure F. In this storage position, the back surface of the plate member 92 of the discharge blade 6 comes into contact with the front surface of the connecting member 16 of the bucket main body 4, as shown by the solid line in FIG.

Since the present invention has the above configuration and operation, the following effects are achieved.

(1) In the bucket 2, when discharging the earth and sand contained in the bucket 2, the discharge blade 6 acts to forcibly discharge the earth and sand inside the bucket 2. It is possible to reliably discharge the dirt, etc. stored in the

(2) The lock mechanism 96 that holds the discharge blade 6 in the housed position is configured to be unlockable simply by utilizing the movement of the tilt link 62 in a so-called Z-bar linkage. That is, since the lock mechanism 96 is configured to be released by effectively utilizing the existing mechanism,
Unlike conventional devices, there is no need to provide a special cam mechanism or the like, and the configuration is extremely simple, making design and manufacturing easy.

Further, since the discharge blade 6 is positioned in the storage position or the discharge position by using the weight of the discharge blade 6, the configuration is simplified in this respect as well.

(3) At the back position of bucket main body 4, lift arm 6
6 and the tilt link 62, even if a work load is applied to the bucket 2, the load is absorbed by the respective connections between the lift arm 66 and the tilt link 62 on the back of the bucket main body 4. Since the lock mechanism 96 is not affected at all, reliability in terms of strength is sufficiently guaranteed.

Furthermore, since the locking mechanism 96 is provided at each rear position of the bucket main body 4 and the discharge blade 6, there is no direct contact between the locking mechanism 96 and the locking mechanism 96, unlike in conventional devices. Strength reliability is fully guaranteed.

(4) When the roller 110 is rotatably attached to the other end of the engaging member 102 and the tilt link 62 is configured to abut against the roller 110 and rotate the engaging member 102, the tilt link 62 is activated. is performed more smoothly.

(5) The engaging member 102 pushes the engaged pin 1 due to its own weight.
06, the configuration is extremely simple.

(6) A through hole is provided on the back of the bucket main body 4,
A bracket 104 is formed on the back side of the discharge blade 6 and protrudes toward the rear side. When the discharge blade 6 is positioned at the storage position, the bracket 104 is configured to protrude from the through hole toward the rear side. Engagement pin 1
When 06 is provided, in addition to the effect on strength described in (3) above, the earth removal effect is further improved.

In other words, the storage space side of the bucket 2 loaded with highly viscous or soft soil is sealed and vacuumed. However, in the process of moving the discharge blade 6 from the storage position to the discharge position, air circulation is improved through the through holes of the bucket main body 4, so the sealed/vacuum state is released and the soil discharge is improved. will improve.

Although a specific example of a bucket cart for an earthmoving vehicle constructed in accordance with the present invention has been described above, the present invention is not limited to this specific example, and various modifications and changes can be made without departing from the scope of the present invention. Modification is possible.

For example, in the illustrated example, three sets of connecting brackets are provided on the back of the bucket main body because it is applied to an earthmoving vehicle equipped with one tilt link and a pair of lift arms, but the present invention is not limited to this. The present invention can be similarly applied to an earthmoving vehicle equipped with two tilt links and a pair of lift arms. In such a case, four sets of connection brackets are provided on the back of the bucket main body, and the lift arm is rotatably connected to the connection brackets located on both sides, and the inside connection bracket located between the connection brackets on both sides is connected to the lift arm. The tilt links may be pivotally connected and a locking mechanism may be provided in association with each tilt link.

[Brief explanation of drawings]

FIG. 1 is a rear view showing a specific example of a bucket for an earthmoving vehicle constructed according to the present invention. Figure 2 shows
2 is a sectional view taken along the - line in FIG. 1. FIG. 3rd-A
3-F are schematic diagrams for explaining the function of the earthmoving vehicle bucket cart shown in FIG. 1, respectively. 2... Bucket, 4... Bucket main body, 6...
Ejection blade, 62...Tilt link, 66...
Lift arm, 98...Lock mechanism, S...Bucket storage space.

Claims (1)

[Scope of Claims] 1. A bucket main body, and a discharge blade disposed within the bucket main body and cooperating with the bucket main body to define a bucket accommodation space, the bucket main body being located at a lower position on the back surface of the bucket main body. The lift arm is rotatably connected to a pair of soft arms at a position above the lift arm, and is rotatably connected to one end of a tilt link at a position above the soft arm, and the other end of the tilt link is rotatably supported between the pair of lift arms. The discharge blade is connected to one end of the link member, the other end of the link member is connected to a tilting hydraulic cylinder mechanism, and the discharge blade is arranged at a storage position for storing objects in the bucket storage space. The bucket main body is rotatably mounted on the upper part of the bucket main body so as to be able to move between a discharge position and a discharge position under its own weight, and the bucket main body is provided with a stop piece that prevents the discharge blade from moving beyond the discharge position. In the bucket for earthmoving vehicles, there is a gap between the bucket main body and the discharge blade.
A locking mechanism is provided for releasably holding the discharge blade in the storage position, and the locking mechanism includes an engaging member rotatably provided at a rear position of the bucket main body and an engagement member rotatably provided at a rear position of the discharge blade. an engaged pin provided at one end of the engaging member, an engaging portion capable of engaging the engaged pin at the rear position by rotation of the engaging member; When the bucket main body is pivoted via the tilt link in a direction in which the bucket storage space faces downward, the tilt link abuts the other end of the engagement member and causes the engagement member to pivot. When the engagement with the engaged pin is released and the bucket main body is pivoted via the tilt link in a direction in which the bucket housing space faces upward, the engaged pin is disengaged from the engagement member. A bucket for an earthmoving vehicle, characterized in that it is configured to be engaged with the engaging portion by abutting one end side and rotating the engaging member. 2. A patent claim characterized in that a roller is rotatably attached to the other end of the engaging member, and the tilt link is configured to contact the roller and rotate the engaging member. A bucket for earthmoving vehicles as described in item 1. 3. The bucket for an earthmoving vehicle according to claim 1 or 2, wherein the engaging member is configured to pivot in the direction of engaging with the engaged pin due to its own weight. 4. A through hole is provided on the back of the bucket main body, a bracket is formed on the back of the discharge blade that protrudes toward the rear side, and when the discharge blade is positioned at the storage position, the bucket is placed in the storage position. Claims 1 to 3 are characterized in that the bracket is configured to protrude from the through hole to the rear side, and the engaged pin is provided on the bracket.
A bucket for earthmoving vehicles as described in any of the above.