JP3505579B2 - Crawler pin removal device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bulldozer and the like.
Crawler track pin removal device used when disassembling
About good. 2. Description of the Related Art When disassembling a crawler track in a bulldozer or the like.
As a crawler pin removal device used for
For example, there is one disclosed in Japanese Utility Model Laid-Open No. 4-32874.
You. [0003] That is, the proposed one constitutes a crawler track (1).
To one end of the support (10) connected to the running shoe (5)
A hydraulic cylinder (31) is suspended under the arrangement of the suspension means,
The base end of the frame (20) is connected to the hydraulic cylinder,
And a hand for hanging the end of the frame to the other end of the support.
It is formed in a structure to be linked under the arrangement of the steps. At one end of the support, the suspension means
Therefore, the support of the hydraulic cylinder, that is, the base end of the frame
Height adjustment with respect to
At the other end of the frame, the suspension means
Formed to allow height adjustment relative to the
ing. [0005] In the case of a frame,
The link (2) that forms the crawler track is
Of course, the link is
The width of the link varies depending on the vehicle model
Even if there is, it is set to be able to cope with this. [0006] Further, in the support, at the other end
The connecting position of the suspension means can be moved along with the support
And that the width of the footwear differs depending on the model
Even if there is, it is set so that it can respond. Therefore, in the above-mentioned conventional proposal,
Linking the support to the track even if the track is different for each
And the link can be placed in the frame.
From the link by the hydraulic cylinder extending from the cylinder
(3) can be extracted. SUMMARY OF THE INVENTION [0008] However,
In the conventional proposal, the following disadvantages were pointed out.
ing. That is, in the above conventional proposal, the frame
So that you can adjust the height position of the
The axis of the pin that is pivotally connected to the extension and contraction direction of the hydraulic cylinder and the link
It is formed so that the core direction can match the vertical direction
Position adjustment in the horizontal direction, that is, expansion and contraction of the hydraulic cylinder
The direction coincides with the axis of the pin pivotally attached to the link in the lateral direction
It is not formed to allow for [0010] Therefore, when connecting the support to the footwear
The direction of expansion and contraction of the hydraulic cylinder and the axis of the pin at the link
It is necessary to make the core direction coincide with the horizontal direction.
The work must be done by so-called visual measurements, and therefore
There is fear that position adjustment work in the horizontal direction cannot be absolutely avoided
There is. The direction of expansion and contraction of the hydraulic cylinder and the link
Whether the axial direction of the pin at the position is the same in the horizontal direction
The frame is connected to the hydraulic cylinder and
Adjust the height position of the hydraulic cylinder with respect to the
The direction of extension and contraction of the pin and the axis of the pin at the link
Is the time when it is determined whether they match. Therefore, after that, how to extend and retract the hydraulic cylinder
Direction and the axis of the pin at the link
To connect the support, a hydraulic cylinder or frame is connected to the support.
In a horizontal position, i.e., move the entire device sideways.
The adjustment work must be performed.
The use of lanes etc. becomes mandatory, and one worker can use a crane.
There is fear that this cannot be easily executed without using
is there. In the above conventional proposal, the frame
Is connected to the other end of the support via the suspension means
However, the suspension means should be
It is for adjusting the height position with respect to the other end of the
And fix the front end of the frame in the same way as the rear end of the frame.
It is not something to keep. Therefore, the reaction force from the hydraulic cylinder
There is a fear that the tip of the frame may fall,
If the end of the frame descends at
The direction of expansion and contraction does not match the axis of the pin at the link.
Therefore, the operation of removing the desired pin is not possible.
There is fear that it will be possible. The present invention has been made in view of the above circumstances.
The purpose of the purpose is to use
Position adjustment work is unnecessary, and
A contractor can easily perform the mounting work, and
At the time of use, the specified work is completely executed,
Crawler pin removal optimal for use when disassembling crawler tracks
To provide a device for [0016] To achieve the above object
Therefore, the configuration of the crawler pin removing device according to the present invention
Position that is connected to the shoe mounting end of the link that constitutes the band
And a link plate connected to the positioning plate.
Opposite one end of a pin adjacent to one end of the link and pivoted to the link
A distal end yoke having a pin insertion hole to be drilled;
The axis of the pin is connected to the front end side of the link and the rear end side is pivotally connected to the link.
A shaft extending along a linear direction and after the shaft
A rear end yoke connected to the end side; and a rear end yoke connected to the rear end yoke.
Hydraulic cylinder to be connected and base end connected to the hydraulic cylinder
Pin with the tip facing the other end of the pin pivotally attached to the link.
And a positioning plate for the link.
Matches to multiple holes for shoe mounting bolt insertion holes
It has a plurality of bolt insertion holes drilled as
A chassis connected to the front yoke and connected to the rear yoke
The shafts are paired with an appropriate space between each other,
The front yoke and rear yoke are appropriate for the vertical line
The core line that connects the pair of shafts inclined at an angle is the vertical direction
The hydraulic cylinder is inclined at an appropriate angle to the line.
It is connected so as to penetrate the center part of the rear end side yoke
And [0017] Preferably, the transfer is performed along the shaft.
A guide plate is interposed in the shaft so as to be movable.
And a positioning plate is connected to the guide plate.
And the guide plate is pivoted to the link.
The other end of the pin pusher and insert the tip of the pin pusher.
It is assumed that an allowable guide hole is formed. Therefore, a pivot pin is attached to the link constituting the crawler belt.
When pulling out from the link, the shoes that make up the crawler
Position the positioning plate on the shoe mounting end of the removed link.
And connect the distal end yoke to the positioning plate.
You. [0019] The positioning plate is located at the place depending on the vehicle type.
A fixed size is selected, and it is connected to the shoe mounting end.
The knot is fixedly realized. Shoe mounting end of link of positioning plate
To the positioning plate and the connection of the distal yoke to the positioning plate.
As a result, the tip side yoke is connected to a predetermined position,
Pin insertion hole in end yoke to pin pivotally connected to link
It becomes possible to connect in an opposed state. The tip end side connected to the positioning plate
The yoke is connected to the tip side of the shaft, and
The rear end side yoke is connected to the rear end side. At this time, the tip side yoke is connected to the tip of the shaft.
It is connected to the end side in a state where the
The work is fixedly connected to the rear end of the shaft. As a result, in the tip side yoke, the tip
The positioning plate to which the end yoke is connected is so-called large
Sized and therefore the positioning plate
The connection position of the distal yoke connected to the shaft to the shaft changes.
Even if it is changed, it can cope with this. In the rear end side yoke, the rear end side
A hydraulic cylinder is fixedly connected to the yoke.
The pin pusher to the link during its extension operation.
Project toward the pin. The reaction force accompanying the extension operation of the hydraulic cylinder is
Via the end yoke and the shaft connected to it
The yoke is transmitted to the distal yoke, and is linked through the distal yoke.
Transmitted to one end of the On the other hand, with the extension of the hydraulic cylinder,
The reaction force is directly applied to the pin pivotally connected to the link via the pin pusher.
Contact and therefore the pin must be removed from the link.
Injury is realized. At this time, a pair of two shafts
As a result, the front yoke and the rear end are attached to the pair of shafts.
When the yokes are connected, insert the pin at the distal yoke.
Cylinder at rear end side yoke to be aimed at through hole
The insertion holes can be opposed to each other,
Without adjusting the thrust application position
In other words, they are so-called aligned. In the above case, the hydraulic cylinder is moved to the rear end side.
While located in the center of the yoke, between a pair of shafts
Are arranged, and a pair of shafts are
Since it is located between the end yoke and the
The force acts on the pin pusher and the so-called axis of the pin.
As a result, reasonable and smooth pin removal is realized. Then, the shafts are so-called vertically arranged
When a pair is used, a core wire connecting the pair of shafts is
So that it is inclined at an appropriate angle to the vertical line.
When the yoke and the rear end yoke are inclined, two
The shaft is displaced horizontally in plan view,
Therefore, a gap is formed between the two shafts in plan view.
And As a result, for example, the hydraulic cylinder is
When connecting to the yoke, pinch the hydraulic cylinder
Using the above gap to perform the work linked from the
And thus the above gap is not formed
As a result, it is possible to realize the linked work more easily.
You. A guide plate is provided on a pair of shafts.
If the guide plate is provided,
The tip of the pin pusher is pivotally connected to the link through the guide hole.
Contact the other end of the pin pusher.
Is prevented in advance. Also, the arrangement of the guide plate allows the oil
When the pressure cylinder operates, a pair of shafts
Buckling will be prevented beforehand.
Therefore, the distortion of the shaft causes the reaction force of the hydraulic cylinder
Prevents the action direction of the pin from deviating from the axis of the pin
You. Embodiments of the present invention will now be described with reference to the drawings.
Will be described in detail.
As shown in FIG. 1, the apparatus comprises: a positioning plate 1;
End yoke 2, shaft 3, rear end yoke 4, oil
It has a pressure cylinder 5 and a pin pusher 6. The positioning plate 1 constitutes a crawler belt.
And the positioning plate 1
To the distal end yoke 2, and
And a rear end yoke 4 attached to the shaft 3.
And a hydraulic cylinder 5 is connected to the rear end side yoke 4.
And a pin pusher 6 is connected to the hydraulic cylinder 5.
And push the pin pusher 6 to a pin pivotally connected to the link R.
It is configured to face P. Further, under the above condition, the hydraulic cylinder 5
And the pin pusher 6 pushed forward at that time
A pin P pivotally attached to a link R constituting a crawler belt is
It is configured to be extracted from the link R. In the illustrated example, a so-called distortion preventing device is used.
For this purpose, two shafts 3 are used
2 and a rear end side yoke 4 are connected to the two shafts 3.
And the hydraulic cylinder 5 is connected to the center of the rear end side yoke 4.
It is set to be. The positioning plate 1 is a suitably thick plate.
And, as shown in FIG.
It is connected to the mounting end R1, and as shown in FIG.
Is formed so as to have a concave shape in plan view, and the plane
It is formed so as to have a space 1a at the so-called center when viewed
I have. Further, the positioning plate 1 is viewed in plan.
On the both sides of the link R, that is,
One for each of the screw holes R2 (see FIG. 2)
A plurality of (two each) bolts are inserted
It has a through hole 1b. Each of the bolt insertion holes 1b is
Bolts 11 are inserted, and the threaded end of each bolt 11
(Not shown) with nut 12 (see FIG. 2)
Shoe shoe mounting end of link R of positioning plate 1
A fixed connection to R1 is realized. Further, the positioning plate 1 will be described later.
Pair of brackets that enable connection of the distal yoke 2
13 and 14, and the pair of brackets 13 and
Reference numeral 14 denotes an example shown in FIG.
It protrudes to an appropriate length toward the side (see FIG. 2). The pair of brackets 13 and 14 are
Each has bolt screw holes 13a and 14a (FIG.
2). In the illustrated example, the space 1a
Is set to a so-called open type,
The half moon plate S (see FIG. 1) as a pair
Between the link R and the outer periphery of the pin P
This is to facilitate each operation when leaving.
As long as each operation of interposing and removing the half-moon plate S is easy
As shown in a phantom diagram in FIG.
The chain type may be set. Then, the space 1a is set to a closed type.
In this case, the rigidity of the positioning plate 1 against bending is
This is advantageous in that the property is increased. The positioning plate 1 described above is
The width of the belt, that is, the width of the link R forming the crawler belt is different for each vehicle type.
Because of the difference, the link R that tries to pull out the pin P
And the size of the bolt insertion hole 1b
Needless to say, the opening position is different. However, the width of the link R constituting the crawler belt depends on the vehicle type.
Even if it differs from one to another, it is not unlimited and
Because of the limited nature, there are many positioning plates
It does not mean that 1 is prepared. Therefore, the positioning plate 1
If the positioning plate 1 is the shoe mounting end R of the link R,
1, the link of the positioning plate 1
Position relative to pin P pivotally attached to R, ie, vertical and horizontal
Orientation will be determined automatically and therefore
Positioning of the tip yoke 2 with respect to the pin P as described above
Will be feasible. The tip side yoke 2 is made of a suitably thick plate-like body.
As shown in FIG. 4, the front view has a substantially rhombic shape.
While being formed as described above,
It is formed so as to be integrally connected from the so-called side
You. When connecting to the positioning plate 1
In FIG. 1, one side 2a, which is the left side in FIG.
Adjacent to one end R3 (see FIG. 1) of the
Is set in advance to prevent rattling
You. That is, the tip side yoke 2 is located on the left side in FIG.
Towards the outside of the center of one side, that is, the above position
Protruding toward bracket 13 on fixing plate 1
And a bracket 21 formed.
1 is a bolt screwing of the bracket 13 to the tip portion.
A bolt allowing the insertion of the bolt 22 by aiming at the hole 13a
It has a through hole 21a. The tip side yoke 2 extends through its thickness.
It is drilled so that it passes through
To the bolt screw hole 14a formed in the bracket 14
Bolt insertion hole 2b that allows insertion of bolt 23
have. The tip side yoke 2 is located at the center thereof.
Opposes one end P1 of a pin P pivotally connected to the link R
And a pin insertion hole 2c for allowing the pin P to be inserted.
Allowing the end of shaft 3 to be inserted into both ends in the so-called vertical direction
2d (see FIG. 1). The tip side yoke 2 is located at the position
When connected to the positioning plate 1, as shown in FIG.
In addition, it is assumed that it is inclined at an appropriate angle with respect to the vertical line.
As a result, the shafts 3 are so-called vertically arranged
A core that connects between the pair of shafts 3 even when a pair is used.
The line is inclined at an appropriate angle to the vertical line
It is set as follows. This corresponds to the front yoke 2 (the rear yoke 4).
The same applies to the two)
The shaft 3 is displaced horizontally in plan view,
Thus, a so-called gap is formed between the two shafts 3 in plan view.
This is because As a result, for example, a hydraulic cylinder
5 is connected to the rear end yoke 4, the hydraulic
Work to connect the solder 5 from the pin pusher 6 side described later.
It can be performed using the above gap, and
Compared to the case where the gap is not formed, the so-called comfortable work appearance
To produce the advantage that the linked work can be realized
become. Therefore, according to the tip side yoke 2,
This is connected to the positioning plate 1 connected to the link R.
By being tied, it is opened at the center of the tip side yoke 2.
The pin insertion hole 2c is automatically pivoted to the link R.
P, that is, the pin of the tip side yoke 2
The position adjustment for the position P is automatically realized.
You. The shaft 3 is located on the right side in FIG.
While the end side is linked to the tip side yoke 2, the left side in FIG.
The axial direction of the pin P whose rear end side is pivotally connected to the link R
And a rear end side of the shaft 3 is described later.
The rear end side yoke 4 is connected. That is, the shaft 3 is mounted on the positioning press.
1 and the above-mentioned front end side yoke 2 and the rear end side which will be described later.
A so-called support frame is formed together with the yoke 4, and the link is formed.
R and a hydraulic cylinder 5 described later are set to be held.
Have been. Therefore, in the illustrated example, the shaft 3
Is a pair of two to prevent so-called distortion,
Moreover, it is set so that there is an appropriate interval between them.
Have been. The shaft 3 is located on the right side in FIG.
A screw 3a of an appropriate length is provided on the distal end side of the screw 3a.
Of the distal end side yoke 2 to a so-called shaft portion where
And screwing the nut 31 into the thread 3a.
In this case, the so-called detachment of the tip side yoke 2 is prevented.
You. The shaft 3 is located on the left side in FIG.
Has a screw 3b of an appropriate length on the rear end side, and the screw 3b is
Interposition of the rear end side yoke 4 to a so-called shaft portion formed
And the nut 32 is screwed into the thread 3b.
Thus, the so-called detachment of the rear end side yoke 4 is prevented. At the tip of the shaft 3,
The end yoke 2 moves backward in FIG.
Is allowed, but on the rear end side, the rear end
The side yoke 4 is fixedly connected, and its movement is completely prevented.
I have to. This is because the tip side yoke 2 is connected to the shaft 3.
The link position is the width of the track, that is, the link R that forms the track.
Positioning plate 1 because the width of
Is sometimes changed to a different size
Yes, and the connection position of the rear end yoke 4 to the shaft 3
The hydraulic cylinder 5 connected to the shaft 3
Care must be taken not to move during long operation.
According to. The rear end side yoke 4 is connected to the front end side yoke 2
While being formed in the same manner, on both ends in the so-called vertical direction
Shaft insertion hole 4 that allows insertion of the rear end of shaft 3
a to allow the hydraulic cylinder 5 to pass through the center
It has a cylinder insertion hole 4b. The rear end side yoke 4 is connected to the above-described front end.
As with the side yoke 2, this is at an appropriate angle to the vertical line.
It is said to be inclined. Therefore, according to the rear end side yoke 4, this
Is connected to the shaft 3 so that the rear end yaw
Into the cylinder insertion hole 4b opened at the center of the
The axis of the hydraulic cylinder 5 passed through is automatically linked to the link R.
It is possible to match the axis of the pivot pin P,
Therefore, the position adjustment of the hydraulic cylinder 5 with respect to the pin P is automatically performed.
It will be realized dynamically. The hydraulic cylinder 5 is connected to the rear yoke 4.
Then, during the extension operation, a pin pusher 6 described later is reset.
Is configured to be pushed toward the pin P pivotally attached to the link R.
Although not shown, supply of hydraulic pressure from outside
As shown in FIG.
It is set so that it is contracted to the left in FIG.
Is defined. The hydraulic cylinder 5 is provided in the illustrated example.
Therefore, the cylinder body 51 penetrates the center of the rear end side yoke 4.
And is protruded and retracted from the cylinder body 51.
The tip of the rod body 52 is connected to the pin pusher 6
You. The pin pusher 6 is attached to the hydraulic cylinder 5
The proximal end 6a is connected to the distal end of the rod body 52,
The tip 6b faces the other end P2 of the pin P pivotally connected to the link R.
It is arranged so that. By the way, in the embodiment shown in FIG.
As shown in FIG. 1, movable along the pair of shafts 3
The pair of shafts 3 has a guide plate
7 is interposed. The guide plate 7 is in the illustrated example,
Integrally connected to the positioning plate 1 by welding or the like
The positioning plate 1
When connecting the screw R to the shoe mounting end R1, the right side in FIG.
One side 7a of the guide plate 7 serving as a surface is other than the link R
It is set so as to be adjacent to the side end R4. The guide plate 7 is located at the center thereof.
And the other end P2 of the pin P pivotally connected to the link R
Guide hole 7 that allows insertion of tip 6b of pin pusher 6
b is pierced. Note that the pair of shafts 3 is
Through holes 7c formed at both ends of the
It is inserted in the state. Therefore, the guide plate 7 is provided.
As a result, the tip 6b of the pin pusher 6 is connected to the other end P2 of the pin P.
When the pin pusher 6 is in contact with
In the hole 7b to prevent so-called misalignment of the tip 6b in advance.
It becomes possible to stop. Further, the guide plate 7 may be provided.
When the hydraulic cylinder 5 is extended, the reaction force
When the pair of shafts 3 starts to buckle,
And therefore the shaft 3 is distorted.
The direction of action of the reaction force from the hydraulic cylinder 5 is the axis of the pin P
Will be prevented beforehand. Therefore, in this embodiment formed as described above,
For the crawler pin removal device according to the example,
And a pin pivotally attached to a link R constituting the crawler belt.
P can be extracted from the link R. That is, although not shown, first, in the crawler track,
Takes the shoe from the shoe mounting end R1 of the link R.
Remove. At this time, the shoe is used to remove the shoe of the link R.
Because it is connected to the end R1 using bolts and nuts,
By removing the bolt and nut, the shoe can be removed
Will be possible. The shoe of the link R from which the shoe has been removed
-Positioning plate 1 is fixedly connected to shoe mounting end R1.
At this time, the positioning plate 1 is
Of course, the one of the predetermined size is of course selected.
You. The connection of the positioning plate 1 is as described above.
The shoe attachment end R1 of the link R is obtained by removing the shoe.
Of the bolt 11 into the bolt insertion hole R2 exposed at
And the nut 12 is screwed into the bolt 11 so as to be fixedly mounted.
Will be revealed. At this time, the positioning plate 1
The guide plate 7 is supported by a pair of shafts 3.
Be mounted. A pin P is pivotally connected to the link R.
And the other end P2 of the pin P has a guide plate 7
Are opposed to each other at the center guide hole 7b. Next, the positioning plate 1
The positioning plate 1 is connected at this time.
It is formed in advance so as to enable connection of the distal yoke 2.
The yoke 2 on the distal end side by using the bolts 22 and 23.
Is connected to the positioning plate 1. Further, the positioning plate of the tip side yoke 2
1 to the center of the distal yoke 2
The opened pin insertion hole 2c automatically illuminates one end P1 of the pin P.
Be followed. The tip side yoke 2 has a pair of shafts
3 are connected to each other.
The side is a shuffle formed at both ends of the tip side yoke 2.
G is inserted through the insertion hole 2d. Then, nuts on the tip side of each shaft 3
31 from the distal end side of the shaft 3 of the distal yoke 2
Is prevented. At this time, the tip side yoke 2 is
Retreat, which would lead to a left
Therefore, the size of the positioning plate 1 may be different.
But we can handle this. Subsequently, after the pair of shafts 3,
The rear end side yoke 4 is connected to the end side.
The rear end of each shaft 3 is formed at both ends of the rear end yoke 4
Is inserted through the shaft insertion hole 4a. Then, nuts to the rear end side of each shaft 3
32, the rear end side yoke 4 is moved toward the rear end side of the shaft 3.
Concatenation is achieved. At this time, the rear end side yoke 4 is
Will be fixedly connected to the rear end of the
The hydraulic cylinder 5 is fixedly held by the rear end yoke 4.
And become possible. The rear end yoke 4 has a hydraulic cylinder 5
At this time, at the center of the rear end side yoke 4,
The hydraulic cylinder 5 is inserted into the formed cylinder insertion hole 4b.
Through the cylinder body 51 from the pin pusher 6 side,
The rod 52 of the hydraulic cylinder 5 is pin-pushed.
It is made to protrude toward 6 side. Thus, the hydraulic cylinder 5 is extended.
Can be supported by the rear end side yoke 4
become. A hydraulic supply source is connected to the hydraulic cylinder 5.
Of course, it is continued. Then, the pin pusher 6 is connected to the hydraulic cylinder 5
At this time, the base end 6a of the pin pusher 6 is
The pin is connected to the rod body 52 of the hydraulic cylinder 5 and
A pin pivotally connected to the link R with the tip 6b of the pusher 6
It faces P. In the above state, the hydraulic cylinder 5 is extended.
The pin pusher 6 pushed forward at that time
To the link R via the guide hole 7a
The other end P2 of the pivotally mounted pin P is brought into contact with the hydraulic
When the pin 5 is further extended, the pin P is connected to one end R3 of the link R.
Will be pulled out from the side. At this time, the reaction with the extension of the hydraulic cylinder 5
The force is applied to the rear end yoke 4 and the shaft connected thereto.
And transmitted to the distal end yoke 2 via the
The link R is transmitted to one end R3 of the link R via the link 2. On the other hand, the extension of the hydraulic cylinder 5
The reaction force is pivotally connected to the link R via the pin pusher 6.
Acting directly on the pin P,
The disconnection from the link R is realized. In the above case, the hydraulic cylinder 5 is
A pair of shafts arranged at the center of the end yoke 4
3 and a pair of shafts 3
Since it is arranged between the side yoke 4 and the tip side yoke 2,
The reaction force of the hydraulic cylinder 5 is at the position of the pin pusher 6 and the pin P.
Acting on the so-called shaft core, the pin P
Drilling is realized. In the illustrated example, the guide play
The guide plate 7 is provided with
The tip 6b of the pin pusher 6 is linked via the guide hole 7a.
R will be in contact with the other end P2 of the pin P pivotally connected to R,
Prevent so-called misalignment at the tip 6b of the pin pusher 6 in advance
it can. Further, the arrangement of the guide plate 7 allows the hydraulic
A pair of shafts is formed by the reaction of the cylinder 5 when the cylinder 5 extends.
3 can be prevented in advance from being buckled.
Therefore, when the shaft 3 is distorted, the hydraulic cylinder 5
It is not necessary that the direction of action of these reaction forces deviate from the axis of the pin P.
It can be stopped. In each of the above embodiments, the positioning press
Port 1 straddles the two links R that make up the track
(See Figure 2), but instead
Is configured to be connected to only one link R
In this case, the size of the positioning plate 1 may be large.
It is advantageous in that the size can be set small overall.
Become. In the illustrated example, the guide plate 7 is provided.
The shaft 3 is moved from the hydraulic cylinder 5
If it is set not to be distorted by the reaction of
The arrangement may be omitted, in which case the so-called operation
It is advantageous in workability. As described above, according to the present invention, the position
Set the plate on the shoe mounting end of the link that makes up the track
Connecting the tip end side yoke to the positioning plate.
By connecting, the tip side yoke is adjacent to one side end of the link
And can be linked to a link
Automatically inserts a pin insertion hole in the end yoke at one end of the pin
On the link, thus pivoting on the link.
No need to adjust the position of the pin
There are advantages. According to the present invention, the tip side support
Link a pair of shafts to the
The rear end yoke is connected to the shaft, and the hydraulic yoke is connected to the rear end yoke.
By connecting the cylinder, the extension direction of the hydraulic cylinder
The pin pusher's forward direction is set to the pin's
And in the lateral direction, so that the oil
Adjust the position in the extension direction of the pressure cylinder.
It has the advantage that it is unnecessary. Further, according to the present invention, the hydraulic cylinder
A pair of shafts arranged at the center of the rear end yoke
, And a pair of shafts
Oil between the head and the yoke.
The reaction force of the pressure cylinder becomes the pin pusher and the so-called axis of the pin.
Will work and the pin will be pulled out smoothly.
There are advantages. According to the present invention, the shaft is
A pair of shafts are arranged in a so-called upper and lower direction to connect the pair of shafts.
So that the core line is inclined at an appropriate angle to the vertical line
Whether the front yoke and the rear yoke are inclined
The two shafts are displaced horizontally in plan view
Therefore, a gap is formed between the two shafts in plan view.
And as a result, for example, a hydraulic cylinder
When connecting the hydraulic cylinder to the rear yoke,
Execute the work linked from the pusher side using the above gap
Therefore, if the gap is not formed,
Compared to the case, the joint work is realized with a so-called easy working posture.
There are benefits that you will get. Further, as shown in the illustrated example, the guide plate
When a guide is provided on the guide plate,
The pin pusher tip is pivotally attached to the link through the
Will be in contact with the other end of the pin pusher.
The so-called misalignment in the pin is prevented in advance, making the pin smoother
There is an advantage that punching is realized. In the case of the illustrated example, the guide press
When the hydraulic cylinder is extended, the reaction force
To prevent the pair of shafts from buckling.
Can be stopped, and thus the shaft is distorted
The direction of action of the reaction force from the pressure cylinder deviates from the axis of the pin
There is an advantage that it can be prevented beforehand.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an elevational view showing a state where a crawler belt pin punching device according to an embodiment of the present invention is attached to a link constituting the crawler belt. FIG. 2 is a longitudinal sectional view showing a state in which a positioning plate is connected to a link constituting a crawler belt. FIG. 3 is a plan view showing a state in which a positioning plate is connected to a link constituting a crawler belt, with a part thereof being omitted; FIG. 4 is an elevational view showing the state shown in FIG. 1 from the tip side yoke side. [Description of Signs] 1 Positioning plate 1b Bolt insertion hole 2 Tip side yoke 2c Pin insertion hole 3 Shaft 4 Rear end yoke 5 Hydraulic cylinder 6 Pin pusher 7 Guide plate 7b Guide hole 6a Base end 6b Tip P Pin P1 One end P2 Other end R link R1 Shoe mounting end R2 Shoe mounting bolt insertion hole R3 One side end

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 4-67586 (JP, U) JP-A 4-32874 (JP, U) JP-A 54-60799 (JP, U) JP 40-78 22176 (JP, Y1) (58) Field surveyed (Int. Cl. ⁷ , DB name) B62D 55/32

Claims (1)

(1) A positioning plate connected to a shoe mounting side end of a link constituting a crawler belt, and a positioning plate connected to the positioning plate and adjacent to one side end of the link to pivot on the link. A front end yoke having a pin insertion hole facing one end of the mounting pin, and a shaft having a front end connected to the front end yoke and a rear end extending along the axial direction of the pin pivotally connected to the link. A rear end yoke connected to the rear end of the shaft;
A hydraulic cylinder connected to the rear end side yoke; and a pin pusher having a proximal end connected to the hydraulic cylinder and a distal end opposed to the other end of a pin pivotally connected to the link, and a positioning plate for the link. It has a plurality of bolt insertion holes drilled to respectively match the plurality of shoe mounting bolt insertion holes, and the shaft connected to the front yoke and connected to the rear yoke is located between The front yoke and the rear yoke are inclined at an appropriate angle with respect to the vertical line, and the core connecting the pair of shafts is inclined at an appropriate angle with respect to the vertical line. And a hydraulic cylinder is connected so as to penetrate a central portion of the rear end side yoke.