JP2000043830A - Ratchet-type load-tying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the collision noise of a claw when a detent claw hits against a ratchet without lowering the strength of the detent claw. SOLUTION: The detent claw 9 is formed such that an urethane tube 7 being an elastic body is set on a part opposite to a ratchet 3; immediately before a toothed body 3a of the ratchet 3 and a claw body 9a of the detent claw 9 come in contact with each other, the toothed body 3a and the urethane tube 17 are brought in collision at first so that the urethane tube 17 is deformed elastically and a collision energy of the detent claw 9 is absorbed, thereby reducing rapidly a rotation speed of the detent claw 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ratchet type binding machine for binding loads loaded on trucks, wagons, ships, etc. by pulling a rope using a ratchet mechanism. The present invention relates to a ratchet type crusher in which claw collision noise generated during buckling operation is reduced.

[0002]

2. Description of the Related Art First, a conventional ratchet type packing machine A 'will be described with reference to the drawings of the present invention.
As shown in FIGS. 1 and 2, the ratchet type packing machine A ′ rotates a gate-shaped operation frame 4 disposed outside the frame-shaped main body 1 in a predetermined direction, and the ratchet 3 is fixed. The winding drum 2 is rotated by a feed claw 5 provided on the operation frame 4 to wind up the rope R. The ratchet 3 is always meshed with a reverse rotation preventing claw 9 to prevent the rotation when the ratchet 3 is rotated.
A chain W is attached to the rear of the frame-shaped main body 1 in the longitudinal direction, and the chain W is fixed to a truck bed or the like.

When the rope R is wound by using the ratchet type packing machine A ', the operating frame 4 is rotated in the winding direction P. The ratchet 3 is moved in the same direction P by the feed claw 5.
Is rotated. By repeating this operation,
The rope R is wound on the winding drum 2. Similarly, when the rope R is loosened, the engagement between the feed claw 5 and the ratchet 3 is released. In this state, the operation frame 4 is rotated in the anti-winding direction P ′ to release the engagement between the reverse rotation preventing claw 9 and the ratchet 3. Then, the ratchet 3 can be reversed and the rope R is loosened.

Next, a description will be given of a case where a load 51 loaded on a truck is bound by using the ratchet type loader A '. As shown in FIG. 9, the end of the chain W is hooked via a hook 53 on one side surface of the truck bed 52. Then, similarly, one end of the rope R is hooked on the opposite side portion via the hook 53, and the other end of the rope R is disposed on one side portion across the load 51. The other end is wound around the winding drum 2 of the ratchet type crusher A ', and the operation frame 4 is moved in the winding direction P.
The rope R is wound up by rotating the rope R.
In this way, the load 51 is held by the rope R,
The collapse of the load 51 is prevented.

When the operating frame 4 is rotated in the winding direction P for winding the rope R, the claw body 9a of the reverse rotation preventing claw 9 is hit against the tooth body 3a of the ratchet 3, and the claw collision sound is continuously generated. appear. Similarly, when rotating the operation frame 4 in the anti-winding direction P ′, the pawl 5a of the feed pawl 5
As a result, a clashing sound is continuously generated. These nail impact sounds are nail impact sounds when metals are slammed, and cause discomfort to others. In some cases, this consolidation operation must be performed with a truck parked on a narrow, high-traffic road close to a residential area. In such a case, the truck can be parked only at night when traffic is light. For this reason, the clashing noise of the ratchet-type buckling machine A 'when the cargo 51 is bound becomes noise for nearby residents, and its improvement has been demanded.

[0006] In order to prevent the above-mentioned claw collision sound, FIG.
As shown in the figure, a portion of the nail body 9a of the reverse rotation preventing nail 9
A configuration in which the rubber member 54 is buried slightly protruding from the contact surface 9b with the ratchet 3 is conceivable. However, the portion of the claw body 9a in the reverse rotation preventing claw 9 is a rope R
This is a part for preventing the ratchet 3 from being reversed against the tension of the ratchet, and requires a predetermined strength. When the rubber member 54 is embedded, the strength of the claw body 9a may be reduced and the portion concerned may be damaged, so that the safety of the ratchet type crusher A 'is reduced.

[0007]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to reduce claw impact noise in a ratchet type compaction machine without deteriorating the safety of the ratchet type compaction machine.

[0008]

According to the present invention, there is provided a ratchet integrally mounted on a drum shaft of a take-up drum rotatably supported by a frame-shaped body, and a ratchet of the frame-shaped body. A ratchet for rotating the winding drum in the same direction via the ratchet by rotating an operation frame, which is disposed outside and one end of which is pivotally attached to the drum shaft, in the winding direction of the rope, and The ratchet-type consolidator, comprising: a feeding claw to be meshed with the ratchet by an urging force, and a reverse rotation preventing claw for preventing reverse rotation of the winding drum via the ratchet. Immediately before the reverse rotation preventing claw is completely meshed, a shock absorber is provided for causing a part of the reverse rotation preventing claw to collide with the object to be impacted and rapidly reducing the rotation speed thereof. I have.

When the rope is wound by using the ratchet type tightening machine according to any one of the first to fourth aspects, the operating frame is rotated in the winding direction with the feed pawl and the ratchet meshed with each other. The reverse rotation preventing claw is urged toward the ratchet by an urging force, and is always meshed with the ratchet. Then, as the ratchet rotates, it enters a valley between adjacent teeth. However, the buffer provided on the anti-reverse pawl and the ratchet first come into contact with each other, and the buffer is elastically deformed to absorb the collision energy of the anti-reverse pawl. As a result, the rotation speed of the reverse rotation preventing claw is rapidly reduced. For this reason, the claw collision noise generated when the reverse rotation prevention claw meshes with the ratchet can be reduced, and noise during the work of packing can be prevented.

In the case of winding the rope using the ratchet type tightening machine according to the fifth and sixth aspects, when the operating frame is rotated in the anti-winding direction, the feed pawl comes into contact with the ratchet. . However, since the silencing material is provided in a portion of the feed claw that comes into contact with the ratchet, claw impact noise can be reduced, and noise during packing operation can be prevented.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail by way of examples. Figure 1 is a side sectional view of the ratchet Shikini tightener A ₁ of the first embodiment of the present invention, FIG. 2 is plan view of the same, FIG. 3 is sectional view taken along line X-X of Figure 1 of a separated state urethane tube 17 FIG. 4 is a side view showing a state where the rubber plate 22 is separated. As shown in FIGS. 1 and 2, a drum shaft 2 a of a winding drum 2 is supported along the width direction of a U-shaped frame-shaped main body 1, and a ratchet 3 is provided at one end thereof. Is installed. Since the portion of the drum shaft 2a to which the ratchet 3 is attached has a rectangular shape, the winding drum 2 and the ratchet 3 always rotate integrally. Both end portions of the drum shaft 2a protrude outward from the frame-shaped main body 1, and both lower end portions of both operation plates 4a constituting the gate-shaped operation frame 4 are rotatably pivoted. A feed claw 5 meshing with the ratchet 3 is rotatably attached to the inner surface of the operation plate 4a on one side of the operation frame 4. The feed claw 5 has a substantially triangular shape, and is provided with a claw body 5a, a reverse rotation prevention release protrusion 6, and an idle vibration prevention protrusion 7 at each vertex. And the rotating shaft 8
And the pawl 5a is engaged with the ratchet 3 by entering into a valley 3b provided between the teeth 3a of the ratchet 3. The feed claw 5 is rotated by a biasing force of a spring (not shown) mounted on the rotation shaft 8 in a direction in which the claw body 5 a is always meshed with the ratchet 3. When the operation frame 4 is rotated in the winding direction P of the rope R, the feed claw 5 meshed with the ratchet 3 rotates the ratchet 3 in the same direction P. at the same time,
When the winding drum 2 is rotated in the winding direction P,
The rope R is wound up. A chain W is attached to a rear portion of the frame-shaped main body 1 in the longitudinal direction, and the chain W is fixed to a truck bed or the like.

A reverse rotation preventing claw 9 is rotatably supported via a rotation shaft 11 on one side surface of a rear portion (a side on which the chain W is mounted) of the frame-shaped main body 1. The reverse rotation preventing claw 9 has a substantially T-shape in a side view, and the rotating shaft 11 is provided at a lower end of a vertical portion. Further, a claw body 9a and a rotation projection 12 are provided at both ends of the horizontal portion. Then, the reverse rotation preventing claw 9
The claw body 9a is always meshed with the ratchet 3 by the urging force (elastic restoring force) of the compression spring 13 disposed at the rear part. The lower end of the compression spring 13 is supported by a spring receiving portion 14 fixed to the frame-shaped main body 1.

[0013] Ratchet type loader A of the first embodiment
₁ is a case where the collision object is the reverse rotation preventing claw 9 and the collision object is the ratchet 3. As shown in FIGS. 1 and 2,
The ratchet 3 is located below the claw body 9a of the reverse rotation preventing claw 9.
The portion opposite to is cut off in an arc shape to form a shock absorber mounting portion 16. A urethane tube 17 which is an example of a buffer is attached to the portion.
The urethane tube 17 is an elastic body. It has a cylindrical shape, the outer diameter of which is substantially the same as the inner diameter of the buffer mounting portion 16, and the axial length thereof is:
It is slightly longer than the thickness of the reverse rotation preventing claw 9. The urethane tube 17 is mounted on the buffer mounting portion 16. Then, as shown in FIG. 3, it is held by being pressed against the outer surface of the frame-shaped main body 1 by the washer 18. The washer 18 is fixed by a fixing screw 19. By removing the washer 18 and the fixing screw 19, the urethane tube 17 can be easily replaced. When the urethane tube 17 is mounted on the buffer mounting portion 16, the ratchet 3 of the reverse rotation preventing claw 9 is
Approximately 1/3 protrudes from a portion opposite to the above. And the claw body 9a of the reverse rotation preventing claw 9 is the tooth body 3 of the ratchet 3.
The ratchet 3 and the urethane tube 17 enter the valley portions 3b of each other and immediately before the contact surface 9b of the claw body 9a and the tooth body 3a of the ratchet 3 are brought into contact (complete meshing). Are abutted first. By doing so, the rotation speed of the reverse rotation preventing claw 9 is rapidly reduced. Since the urethane tube 17 is attached to a portion of the reverse rotation preventing claw 9 below the claw body 9a, that is, a portion other than the claw body 9a,
The strength of the nail body 9a does not decrease.

As shown in FIG. 1, a thin rubber plate 22 which is an example of a sound deadening material is provided on a contact surface 5b of the pawl body 5a of the feed claw 5 with the ratchet 3 by a fixing screw 21.
Is installed. The width of the rubber plate 22 is substantially the same as the width of the feed claw 5, and is attached over substantially the entire area of the contact surface 5 b of the claw body 5 a of the feed claw 5 with the ratchet 3. For this reason, the claw body 5 a of the feed claw 5 is engaged with the ratchet 3 via the rubber plate 22. As shown in FIGS. 3 and 4, the urethane tube 17 and the rubber plate 22 rotate the reverse prevention claw 9 and the feed claw 5 in a direction opposite to the direction in which the ratchet 3 is engaged with the ratchet 3, and fix the fixing screw. It can be easily replaced by removing 19 and 21.

[0015] The operation of the ratchet Shikini tightener A ₁ of the first embodiment, a case of winding the rope R. As shown in FIG. 1, the end of the rope R is wound around the winding drum 2, and the operation frame 4 is rotated to the maximum in the anti-winding direction P '. The anti-vibration projection 7 of the feed claw 5 is the reverse rotation prevention claw 9.
, The ratchet 3 and the reverse rotation preventing claw 9 are securely engaged with each other. The operating frame 4 is rotated in the winding direction P in a state where the ratchet 3 and the feed claw 5 are engaged with each other. Feeding claw 5
By rotating the ratchet 3 in the same direction P, the winding drum 2 is rotated, and the rope R is wound by repeating this operation. Next, the operation of the reverse rotation preventing claw 9 at that time will be described in more detail. As shown in FIG. 5, the rotation preventing pawl 9 rotates in a direction against the urging force (elastic restoring force) of the compression spring 13 (elastic restoring force) about the axis of the rotating shaft 11 as the ratchet 3 rotates. (In the direction of compressing). At the same time, the contact surface 9b of the claw body 9a of the reverse rotation preventing claw 9 with the ratchet 3 gradually comes off the tooth body 3a of the ratchet 3.

Further, when the operation frame 4 is rotated in the winding direction P, as shown in FIG. 6, the contact surface 9b of the claw body 9a of the reverse rotation preventing claw 9 with the ratchet 3 is moved to the ratchet 3 position. Completely disengage from the tooth body 3a. And the reverse rotation preventing claw 9
Is the tooth body 3a of the ratchet 3 around the axis of the rotating shaft 11.
It is rotated in the direction in which it comes into contact with. This rotation is performed at a rapid speed by the urging force (elastic restoring force) of the compression spring 13.
However, a urethane tube 17 is attached to a portion of the reverse rotation preventing claw 9 opposite to the ratchet 3,
Immediately before the contact surface 9b of the claw body 9a of the reverse rotation preventing claw 9 is brought into contact with the teeth 3a of the ratchet 3 (complete meshing), the urethane tube 17 and the teeth 3 of the ratchet 3 are brought into contact.
a collide first. The urethane tube 17 has elasticity, and when it collides with the teeth 3a of the ratchet 3, the urethane tube 17 itself is elastically deformed, so that the collision energy of the reverse rotation preventing claw 9 is absorbed. As a result, since the rotation speed of the reverse rotation preventing claw 9 is sharply reduced, the claw collision sound between the tooth body 3a of the ratchet 3 and the claw body 9a of the reverse rotation preventing claw 9 can be reduced.

Next, a case where the operation frame 4 is rotated in the anti-winding direction P 'will be described. Following the maximum rotation of the operating frame 4 in the winding direction P, the operating frame 4 is rotated in the anti-winding direction P ′. At this time, since the ratchet 3 is meshed with the reverse rotation preventing claw 9, the reverse rotation of the ratchet 3 is prevented, and the ratchet 3 remains stationary. The claw body 5a of the feed claw 5 is constantly urged by a spring (not shown) in a direction in which the claw body 5a meshes with the ratchet 3. Therefore, as the operation frame 4 is rotated in the anti-winding direction P ′, similarly to the case of the above-described reverse rotation preventing claw 9, the claw body 5 a of the feed claw 5 disengaged from the tooth body 3 a of the ratchet 3 is moved. When it enters the valley portion 3b of the adjacent tooth body 3a, it is hit by the urging force of a spring (not shown). However, in the case of the ratchet type crusher A ₁ of the present embodiment, the pawl 5
Since the rubber plate 22 is attached to the contact surface 5b of a, the two members 3a and 5b are beaten through the rubber plate 22. The presence of the rubber plate 22 absorbs and reduces the impact sound of the claws when the two members 3a and 5b come into contact with each other. In this manner, the above-described claw impact sound is continuously generated as the operation frame 4 is rotated in the anti-winding direction P ′, but the entire claw impact sound is small. The operation in the case of loosening the rope R is exactly the same as that of the conventional ratchet type loader A '.

Next, a description will ratchet Shikini tightener A ₂ of the second embodiment. The cushion of this embodiment is a compression spring 23. As shown in FIG. 8, a convex collision body 24 is provided at the lower end of the reverse rotation preventing claw 9. A spring support 25 is provided at the lower end of the spring receiving portion 14, and the compression spring 23 is supported. By the urging force of the compression spring 13, the claw body 9 a of the reverse rotation preventing claw 9, which has come off the tooth body 3 a of the ratchet 3, enters the valley 3 b with the adjacent tooth body 3 a. Then, the contact surface 9b of the claw body 9a of the reverse rotation preventing claw 9 and the tooth body 3a of the ratchet 3 come into contact with each other and attempt to completely mesh, but immediately before that, the compression spring 23 is compressed (elastically deformed). Therefore, the rotation speed of the reverse rotation preventing claw 9 is rapidly reduced. This state is shown by a two-dot chain line in FIG. Therefore, the tooth body 3 a of the ratchet 3 and the reverse rotation preventing claw 9
Claw collision sound with the claw body 9a can be reduced. The compression spring 23 may be fixed to either the collision body portion 24 or the spring support portion 25.

The case where the urethane tube 17 and the compression spring 23 are used as the buffer in the ratchet type loaders A ₁ and A ₂ of the first and second embodiments described in the present specification has been described. However, a buffer other than the above may be used.

[0020] When the ratchet Shikini tightener A ₁ of the first embodiment, the urethane tube 17 described above, can be provided to the reverse rotation preventing claw 9 in the conventional ratchet Shikini tightener A '.

[0021]

According to the ratchet type buckling apparatus according to the present invention, a part of the anti-rotation claw is subjected to the collision with the ratchet immediately before the anti-rotation claw is completely meshed with the ratchet. And a shock absorber for suddenly reducing the rotational speed of the vehicle. That is, when the buffer body of the reverse rotation preventing claw collides with the colliding object, the collision energy of the reverse rotation preventing claw is absorbed by the buffer body, and the rotation speed is rapidly reduced. Since no processing is performed on the claw body of the reverse rotation preventing nail, the nail collision sound can be reduced without lowering the strength of the reverse rotation preventing nail. As a result, noise can be prevented, and the packing operation can be performed at any place. When the collision target is a ratchet, not only is it necessary to slightly process the ratchet, but also it is not necessary to process other members. For this reason, it can also be provided on the reverse rotation preventing claw of the conventional ratchet type buckling machine. Further, replacement of the buffer is easy.

Further, in the ratchet type packing machine according to the fifth and sixth aspects of the present invention, since the muzzle is provided on the feed pawl, the pawl generated when the feed pawl collides with the ratchet is provided. The collision sound can be reduced. as a result,
Noise is prevented. In addition, replacement of the muffling material is easy.

[Brief description of the drawings]

FIG. 1 shows a ratchet type loader A according to a first embodiment of the present invention.
_{1 is} a side sectional view of FIG.

FIG. 2 is a plan view of the same.

FIG. 3 shows a state in which the urethane tube 17 is separated.
FIG. 3 is a sectional view taken along line XX of FIG.

FIG. 4 is a side view of a state where the rubber plate 22 is separated.

5 is a view illustrating the operation of the ratchet Shikini tightener A ₁ of the first embodiment.

FIG. 6 is an operation explanatory view showing a state in which the reverse rotation preventing claw 9 and the ratchet 3 are engaged with each other.

FIG. 7 is an operation explanatory view showing a state where the feed claw 5 and the ratchet 3 are meshed with each other.

8 is a view illustrating the operation of the ratchet Shikini tightener A ₂ of the second embodiment.

FIG. 9: Using a conventional ratchet type packing machine A ′,
It is a figure showing the state where goods 51 of a truck are bound.

FIG. 10 is a side view of a main part of a ratchet type packing machine A ′ in which a rubber member 54 is embedded in a claw body 9a of the reverse rotation preventing claw 9;

[Explanation of symbols]

A ₁ , A ₂ : Ratchet-type packing machine P: Winding direction R: Rope 1: Frame-shaped body 2: Winding drum 2a: Drum shaft 3: Ratchet 4: Operating frame 5: Feeding claw 5b: Contact surface 9 : Reverse prevention claw 9a: Claw body 13: Compression spring (biasing force) 17: Urethane tube (buffer) 22: Rubber plate (muffling material) 23: Compression spring (cushion)

Claims (6)

[Claims] A ratchet integrally mounted on a drum shaft of a take-up drum rotatably supported by the frame-shaped main body; and a ratchet disposed outside the frame-shaped main body, and one end of which is pivotally connected to the drum shaft. A feeding claw meshed with a ratchet for rotating the winding frame in the rope winding direction and rotating the winding drum in the same direction via the ratchet, and the ratchet being constantly biased by the urging force. And a reverse rotation preventing claw for preventing reverse rotation of the take-up drum via the ratchet. A ratchet type tightening machine comprising: immediately before the reverse rotation preventing claw is completely meshed with the ratchet. Then, a part of the reverse rotation preventing claw is made to collide with the
A ratchet-type packing machine comprising a shock absorber for rapidly reducing the rotation speed. 2. The collision object is a ratchet, and at a portion of the reverse rotation preventing claw facing the ratchet,
2. The ratchet-type packing machine according to claim 1, wherein a buffer body is mounted on a portion other than the claw body. 3. The ratchet-type compacting machine according to claim 1, wherein the collision target is a buffer mounted on a frame-shaped main body. 4. The ratchet type buckling machine according to claim 1, wherein said buffer is replaceable. 5. A ratchet integrally mounted on a drum shaft of a take-up drum rotatably supported by a frame-shaped main body, and a ratchet arranged outside the frame-shaped main body, and one end of the ratchet is pivotally connected to the drum shaft. A feeding claw meshed with the ratchet for rotating the operating frame in the rope winding direction and rotating the winding drum in the same direction via a ratchet, and the ratchet being constantly biased by the urging force. A reversing prevention claw that is meshed and that prevents the winding drum from reversing through the ratchet. A ratchet-type consolidation machine comprising: a muffler attached to a contact surface of the feeding claw with the ratchet. A ratchet type packing machine characterized by the following. 6. The ratchet type packing machine according to claim 5, wherein said muffler is replaceable.