JP2001254796A - Pressing force transmission using push chain - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a push chain of a pressing force transmission from being buckled. SOLUTION: This pressing force transmission 21 is provided with a pair of sprockets 23 and 24 axially spaced in parallel and two push chains 25 and 26 fed by a pair of the sprockets, and opposite parts of the two push chains are connected by a connecting shaft 29.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a pressing force transmitting device using a push chain.

[0002]

2. Description of the Related Art Conventionally, in FIG. 11, a pressing force transmitting device including one sprocket (not shown) and a push chain 11 sent out by the sprocket is known.
For example, it may be used for a device that conveys a conveyed object while pressing it.

[0003]

However, as shown in FIG. 11, the push chain 11 of the conventional pressing force transmitting device is curved during the pressing and conveying of the conveyed object, and the pressing chain acting on the push chain 11 is pressed. Once protruding from the center line A of the pressure, it was sometimes curved and buckled in that direction. In such a case, the pressing force transmission device may not be able to apply a pressing force to the conveyed object.

(Purpose) It is an object of the present invention to provide a pressing force transmitting device in which a push chain does not easily buckle.

[0005]

Means for Solving the Problems The above object is achieved by the present invention according to claim 1, for example, as shown in FIGS.
A pair of sprockets (2
(3, 24) (223, 224) and two push chains (25, 26) (12) sent out by the pair of sprockets (23, 24) (223, 224).
5, 126) (225, 226), and the two push chains (25, 26) (125, 126).
(225, 226) is connected to the connecting shaft (29)
Pressure transmitting device (2)
1) Solved by (121) and (221).

According to a second aspect of the present invention, for example, as shown in FIGS.
7, 28) The pressing force transmission device (21) (121)
(221).

According to a third aspect of the present invention, for example, as shown in FIG.
6) A pressing force transmitting device (121) having a guiding means (140) for guiding the pressure force.

According to a fourth aspect of the present invention, as shown in FIGS. 2 and 6, the pair of sprockets (23, 2)
4) is a pressing force transmission device (2
1) (121).

According to a fifth aspect of the present invention, for example, as shown in FIG. 8, the pair of sprockets (223, 224)
Are separate from each other in the direction of rotation and can be individually driven, and at least the push chains (225, 226) are provided between both ends of the connecting shaft (29) and the push chains (225, 226). A pressure transmitting device (221) provided with a joint (255) that is rotatable about an axis substantially perpendicular to a plane in the moving direction.

(Function) Two push chains (25, 26) (125, 126) (22) of the pressing force transmitting device (21) (121) (221) of the present invention according to claim 1.
5, 226) is sent out by rotation of the pair of sprockets (23, 24), and presses and conveys the conveyed object.

Two push chains (25, 26)
(125, 126) and (225, 226) are connected shafts (2
9), the two push chains (25, 26) (125, 126)
The width of the area occupied by (225, 226) is wider than the width of the area occupied by the conventional single push chain. For this reason, as shown in FIG.
Two push chains (25, 26) (125, 12
6) The push chains (25, 226) can be used even if they are bent during the pressing and conveying of the article.
26) There is little protrusion from the center line B of the pressing force acting on (125, 126), (225, 226), and there is almost no buckling. This bent state corresponds to the push chains (25, 26) (125, 12).
6) The problem is solved by winding (225, 226).

According to a second aspect of the present invention, there is provided a pressing force transmission device (21) (121) (221) comprising two push chains (25, 26) (125, 126) (225, 22).
6) is a connecting shaft (2) at a portion between the pins (27, 28).
9), the push chains (25, 26) (125, 126) (225, 226)
Inner link (31) and outer link (32) that bend each other
Are connected by a connection shaft (29), and the push chains (25, 26) (125, 126) (225, 225) are connected by the connection shaft (29).
226) is not disturbed.

According to a third aspect of the present invention, there is provided a pressing force transmission device (121) according to the present invention, comprising two push chains (125, 12).
6) is guided by the guide means (140), so that the guide means (140) is operated by the push chain (12).
5,126).

According to a fourth aspect of the present invention, a pressing force transmitting device (21) (121) of the present invention comprises a pair of sprockets (23, 2).
4) are integrated with each other in the direction of rotation, so that the pair of sprockets (23, 24) can be rotated synchronously, and the two push chains (25, 26) (125, 126)
To prevent the push chain from buckling.

According to a fifth aspect of the present invention, there is provided a pressing force transmitting device (221) according to the present invention, comprising a pair of sprockets (223, 224).
Are separate from each other in the direction of rotation and can be individually driven, and at least the movement of the push chain (225, 226) between both ends of the connecting shaft (29) and the push chain (225, 226). Since the joint (255) that is rotatable about an axis substantially perpendicular to the plane of the direction is provided, if the rotation of one sprocket (223) is accelerated, the push chain (225) meshing with the sprocket (223) is provided. ) Is the other push chain (22
6) Move faster. As a result, the two push chains (225, 226) bend toward the push chain (226) having the lower speed. The degree of curvature is
It is determined by the speed difference between the two push chains (225, 226). The larger the speed difference, the larger the amount of bending (the smaller the radius of curvature). At this time, the relative position between the two push chains (225, 226) is shifted. This displacement is caused by the joint (25) connecting the connecting shaft (29) and the push chains (225, 226).
In part 5), the connecting shaft (29) is connected to the push chain (2).
25, 226).

Note that the reference numerals in parentheses are provided for convenience in order to easily compare the description with the drawings, and do not limit the configuration of the present invention.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a pressing force transmitting device according to the present invention will be described below with reference to the drawings.

(First Embodiment) A pressing force transmission device 21 according to a first embodiment will be described with reference to FIGS.

The pressing force transmitting device 21 includes a pair of sprockets 23 and 24 spaced apart from each other on a rotating shaft 22 and
Mainly comprising two push chains 25 and 26 (hereinafter, simply referred to as “chains” in all embodiments) sent out by a pair of sprockets 23 and 24,
The pins 27 and 28 of the two chains 25 and 26 facing each other are connected by a connecting shaft 29. Actually, the pins 27 and 28 and the connecting shaft 29 are
It is formed by one shaft 30. The pins 27 and 28 connect the inner link 31 and the outer link 32. The connecting shaft 29 is connected to the inner links 3 of the chains 25 and 26 facing each other.
The inner plates 31a of one or the outer plates 32a of the outer link 32 facing each other may be connected. Therefore, the "opposite portion of the chain" in Claim 1 is not limited to the pins 27 and 28.

The outer plate 32a of the outer link 32 and the inner plate 31a of the inner link 31 have outwardly protruding anti-bending pieces 34 at portions that become outer when the chains 25, 26 mesh with the sprockets 23, 24. ing. When the chains 25 and 26 are in a linear state (a state like a right side portion in FIG. 1) without being supported by any object, the bending prevention pieces 34 abut against each other to make the chain 2
5 and 26 are prevented from bending or bending downward.

The rotating shaft 22 is connected to a pair of side plates 3 held and connected at predetermined intervals by seven frame shafts 35.
6 and 36 are rotatably supported via bearings 37. Each of two adjacent frame shafts 35 has a chain 2
A pair of outer guide plates 38, 38 for guiding between the bending prevention pieces 34 are provided opposite to the first and second guide plates 5, 26. Furthermore, the two frame shafts 35 are provided with the inner plate 31 of the inner link 31.
A pair of inner guide plates 39 for guiding between a (one not shown)
Is provided.

In FIG. 1, a pressing piece (not shown) for pressing a conveyed object is provided at the right end of the chains 25 and 26. In FIG. 1, the lower left ends of the chains 25 and 26 are connected to a winding body (not shown) that winds and stores the chains 25 and 26.

When the pressing force transmission device 21 is not used,
A part of the two chains 25 and 26 is wound up and stored in a winding body (not shown). Pressing force transmission device 21
When using the motor, a motor (not shown) is started and the rotating shaft 22
Is rotated, the pair of sprockets 23 and 24 rotate synchronously. The two chains 25 and 26 are simultaneously sent out and press and convey the conveyed object.

At this time, the two chains 25, 26
In order to receive a reaction force while being sent out by the sprockets 23 and 24, the sprockets are pushed out in a substantially arrow C direction in FIG. However, in the chains 25 and 26, the rollers 39 and 39 are received by the arcuate surfaces 38a and 38a of the outer guide plates 38 and 38, and the chains 25 and 26 are prevented from floating from the sprockets 23 and 24. Detachment is prevented. The chains 25 and 26 immediately after being sent out from the sprockets 23 and 24 are in an unstable state, but are guided by the inner guide plate 39 to maintain linearity.

The two chains 25 and 26 are connected to a connecting shaft 29.
, The width of the area occupied by the two chains 25, 26 is
It is wider than the width of the area occupied by the strip chain 11 (see FIG. 11). For this reason, as shown in FIG. 4, even if the two chains 25 and 26 may be curved during the pressing and conveying of the conveyed object, the chains 25 and 26 may be curved.
Hardly protrude from the center line B of the pressing force acting on the buckling force, and hardly buckle. This curved state is eliminated by winding the chains 25 and 26.

(Second Embodiment) A pressing force transmission device 121 according to a second embodiment will be described with reference to FIGS.

The pressing force transmission device 121 of the second embodiment is
A pair of chains 2 is attached to the pressing force transmission device 21 of the first embodiment.
It has a structure provided with a guiding means 140 for guiding 5, 26. For this reason, in the second embodiment, a portion related to the guide means 140 will be described, and the same portions as those in the first embodiment will be denoted by the same reference numerals and description thereof will be omitted.

The pins 27, 28 of the chains 125, 126
And the connecting shaft 29 connecting the pins 27 and 28 are formed by a single shaft 30, and two ends of the chain 125, 126.
Protruding on both sides. An outer roller 144 and an inner roller 143 are provided on the shaft 30 so as to be alternately rotatable. The rollers 144 and 143 are
42 restricts movement in the thrust direction.

The frame shaft 35 has a sprocket 23,
The outer guide plates 138, 1 each having an arcuate surface 138a formed in contact with the outer roller 144 and the inner roller 143 at the bent portions of the chains 125, 126 that are engaged with the chain 24.
38 are provided. This pair of outer guide plates 138,
138 ensures that the chains 125, 126 are meshed with the sprockets 23, 24,
Detachment from 3, 24 is prevented. In particular, similarly to the first embodiment, the chains 125 and 126 may be pushed out in the direction of arrow C by the reaction force when pressing the conveyed object. However, the chains 125 and 126 are received by the outer guide plates 138 and 138 and are sprockets. Detachment from 23 and 24 is prevented.

The other frame shaft 35 has a sprocket 2
The inner guide plate 14 having a straight surface 145a that contacts the outer roller 144 and the inner roller 143 in the horizontal portion of the chains 125 and 126 near the outer rollers 3 and 24 from below.
5,145 are provided. This inner guide plate 145
Is provided to receive the chains 125 and 126 in an unstable state immediately after being sent out from the sprockets 23 and 24, and to maintain the linearity of the chains 125 and 126.

Below the horizontal portions of the chains 125, 126, the chains 125, 1
Two guide rails 146 and 146 supporting the support rail 26 are provided. The chains 125 and 126 are not bent or bent downward by the bending prevention pieces 34, but the guide rails 146 and 146 prevent the bending or bending. In addition, the guide rails 146 and 146 do not bend or bend in the left-right direction in FIG.
The linearity of 126 is maintained.

The inner roller 143, the outer roller 144,
And only one of the outer guide plate 138 may be provided.

Further, as shown in imaginary form in FIG. 7, a gutter-like shape having a floating prevention piece 147 for restricting the outer roller 144 from above so that the linear portions of the chains 125 and 126 do not bend or curve upward. May be provided.

In the above configuration, the guide rail 14
6. At least one of the guide members 148 is the guiding means 1.
40.

(Third Embodiment) A pressing force transmission device 221 according to a third embodiment will be described with reference to FIGS.

The pressing force transmitting device 221 of the third embodiment is
As shown in FIG. 10, the excavator M of the excavator or a television camera (not shown) is provided at the end to excavate a bent hole in the ground or to perform maintenance in a bent pipe or a drain. Can be used when doing.

In the third embodiment, the same parts as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and the same parts as those of the second embodiment are the same as those of the second embodiment. The same reference numerals are used, and the description of those parts is omitted. Also,
The pressing force transmission device 221 of the present embodiment
It is assumed that the excavator M of the excavator is provided at the tip of 5,226.

The two chains 225 and 226 are formed to guide and bend the excavated holes and pipes.
A pair of sprockets 223 and 224 are provided on separate rotating shafts 251 and 252 arranged with their axes aligned so as to rotate individually. Rotating shaft 25
The reference numerals 1 and 252 are rotatably supported by the bearing 37 of the side plate 36 and the bearing 254 of the support plate 253, and are rotated by a motor (not shown) capable of changing the rotation speed.

A universal joint 255 is provided between both ends of the connecting shaft 29 and the opposing pins 27 and 28 of the two chains 225 and 226. In addition, even if the joint is not the universal joint 255, at least the push chain 22
Any joint may be used as long as it is rotatable about an axis substantially perpendicular to the plane in the movement direction of 5,226. The outer ends of the pins 27 and 28 extend outward, and a running roller 256 is provided at the extended end. The running rollers 256 allow the chains 225 and 226 to move smoothly in the excavated hole and in the pipe. In addition, the running roller 256
Has the same role as the outer roller 144 of the second embodiment.

The two chains 225, 226 are sent out at the same speed while the rotation speeds of the pair of sprockets 223, 224 are the same, and the excavator M of the excavator provided at the tips of the chains 225, 226 is moved straight. Excavator M
Digs a straight hole H1 while being pushed by the chains 225 and 226. When the excavating portion M of the excavator is moved to the position where the hole is bent rightward, the rotation of the left sprocket 223 as viewed from above is increased, or only the left sprocket 223 is rotated, and the right sprocket 22 is rotated.
Stop rotation of 4. Then, the sprocket 22
3 is the right chain 22
Move faster than 6.

At this time, the two chains 225, 226
Root part (part close to sprockets 223 and 224)
Of the connection shaft 29 and the chain 22
5 and 226, the part of the universal joint 255
The connecting shaft 29 is inclined rightward by tilting with respect to the chains 225 and 226. However, the two-row chains 225, 226 cannot already bend to the right by the drilled straight hole H1.

For this reason, the left chain 225 moves faster than the right chain 226, and the left chain 22
5 protrudes from the right end of the chain 226. The extremities of the two chains 225 and 226 are connected by a digging portion M of the excavator, and the digging portion M of the excavator is further pushed by the protrusion of the left chain 225 from the right chain 226. And dig into the ground to the right to dig a hole H2 curved to the right. The radius of curvature of the curved hole H2 is determined by the speed difference between the left and right chains 225, 226. Thereafter, when the speeds of the left and right chains 225 and 226 are made equal, the tips of the left and right chains 225 and 226 advance at the same speed, and the excavating portion M of the excavator goes straight to dig a straight hole H3. Further, if the speed of the right chain 226 is increased thereafter, the tip of the right chain 226 protrudes from the tip of the left chain 225, and the excavation part M of the excavator turns left by the protruding portion. While digging the hole H4 curved to the left.

As described above, the two chains 225 and 226 of the pressing force transmitting device 221 are bent and advanced by guiding the excavated hole, so that the bent hole is dug in the excavation portion M of the excavator. Can be made.

When a television camera is provided at the tip of the two chains 225, 226, and the maintenance in the pipe and the drain is performed along the curvature of the pipe and the drain, the same can be performed.

[0045]

The pressing force transmitting device of the present invention has two push chains which are separated from each other by a connecting pin, so that there is almost no buckling and the pressing object can be surely pressed and conveyed. can do.

In the pressing force transmission device of the present invention, when the two push chains are connected by the connecting shafts of the pins of the push chains, the bent portions of the push chains are connected to each other. The movement of the two push chains is smoothly performed without any hindrance to the movement.

In the pressing force transmission device of the present invention, if the push chain guide means is provided, buckling of the push chain can be prevented.

In the pressing force transmission device of the present invention, by changing the rotation speed of the pair of sprockets,
The moving speed of the two push chains is different, and if there is an object to be guided in a use state such as excavation in the ground and maintenance of pipes and drains, it is bent and moved by guiding the object to be guided. be able to.

[Brief description of the drawings]

FIG. 1 is a front view of a pressing force transmission device according to a first embodiment.

FIG. 2 is a view of FIG. 1 as viewed from below.

FIG. 3 is a sectional view taken along the line AA in FIG.

FIG. 4 is a schematic plan view for explaining the operation of the push chain in FIG. 1;

FIG. 5 is a front view of a pressing force transmission device according to a second embodiment.

FIG. 6 is a view of FIG. 5 viewed from below.

FIG. 7 is a sectional view taken along line BB in FIG.

FIG. 8 is a view seen from below the pressing force transmitting device of the third embodiment, and is a diagram corresponding to FIG. 2;

9 is a sectional view of the push chain of the pressing force transmission device of FIG. 8, corresponding to FIG.

FIG. 10 is a schematic plan view showing a use state of a pressing force transmission device according to a third embodiment.

FIG. 11 is a schematic plan view for explaining the operation of a push chain of a conventional pressing force transmission device.

[Explanation of symbols]

H hole M Excavating part of excavator 21, 121, 221 Pressing force transmission device 22, 251, 251 Rotating shaft 23, 24, 223, 224 Sprocket 25, 26, 125, 126, 225, 226 Push chain 27, 28 Pin 29 Connecting shaft 30 Shaft 31 Inner link 31a Inner link inner plate 32 Outer link 32a Outer link outer plate 34 Bending prevention piece 38 Outer guide plate 141, 142 Retaining ring 143 Inner roller 144 Outer roller 146 Guide rail 147 Floating prevention piece 148 Guide Body 255 universal joint (joint) 256 running roller

Claims (5)

[Claims] 1. A pair of sprockets arranged side by side in the axial direction and two push chains fed by the pair of sprockets, wherein opposing portions of the two push chains are provided. A pressure transmitting device using a push chain, characterized by being connected by a connecting shaft. 2. The pressing force transmission device using a push chain according to claim 1, wherein the opposing portion is a pin. 3. The pressing force transmission device using a push chain according to claim 1, further comprising a guide means for guiding the two push chains. 4. The pressing force transmission device using a push chain according to claim 1, wherein the pair of sprockets are integral with each other in a rotation direction. 5. The pair of sprockets are separate from each other in a rotational direction and can be driven individually, and at least a moving direction of the push chain between both ends of the connecting shaft and the push chain. 3. A joint which is rotatable about an axis substantially perpendicular to the plane of the above.
Or a pressing force transmission device using the push chain according to 3.