JPH04130169U - Ratchet release device for load tightening machine - Google Patents

Abstract

(57) [Summary] (with amendments) [Purpose] When tightening belts using a ratchet-type load tightening machine, care must be taken to prevent the ratchet from being released accidentally during the tightening process, and After finishing, in order to remove the belt wound on the reel, the ratchet is released and the reel is released to rotate freely. [Structure] A ratchet release piece 21 is provided on a drive pawl 15 for driving a ratchet wheel 13 that is pivotally supported on a drive lever 14, and a ratchet release recess 25 is provided on a reversal prevention pawl 16 that engages with the ratchet wheel 13. When the drive lever 14 is pushed down toward the anti-reverse claw 16 with the drive lever 15 rotated in the reverse direction, the ratchet release piece 21 fits into the ratchet release recess 25 and the push-down force of the ratchet release piece 21 is Reversal prevention claw 1
6 is rotated to separate the anti-reverse claw piece 16 from the ratchet wheel 13.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a load tightening belt used for packaging, fastening cargo, securing objects, and other purposes. In a ratchet-type load tightening machine for tightening, there is a device for releasing the ratchet. Regarding those with a location.

0002

[Conventional technology]

Conventionally, load tightening machines for lashing using belt-like belts have been known. For example, as disclosed in U.S. Pat. No. 4,185,360 and U.S. Pat. No. 4,324,022. A load tightening machine is known.

0003 Such a known load tightening machine includes a reel whose both shaft ends are rotatably supported on the machine frame, and a ratchet wheel fixed to both shaft ends of the reel; and the ratchet wheel. A drive pawl is provided that swings on the same axis of the ratchet wheel and drives the ratchet wheel in forward rotation. a ratchet drive lever and a reverse ratchet wheel that is pivotally supported on the machine frame and prevents the ratchet wheel from reversing. It is equipped with anti-rotation claws that allow the belt to be driven with the end inserted into the reel slit. Swing the moving lever to tighten the belt while winding the end of the belt onto the reel. It is said to be composed of

0004

[Problem that the idea aims to solve]

Conventional load tightening machines focus on a structure in which the belt is tightened while being pulled by a reel. It is equipped with a ratchet release device to remove the belt from the reel after winding. do not have.

[0005] Therefore, after the load is tightened, the winding part of the belt wound on the reel is removed from the reel. Removal work is complicated.

[0006] Regarding this point, in articles such as winches equipped with ratchets, There is a known technology that allows the reel to rotate freely by releasing it. It is hoped that this technology will be applied to load tightening machines.

[0007] However, when equipping a load tightening machine with a ratchet release device, it is necessary to The work must be simple and easy, and if there is no intention to release, in other words, if the work is being done to tighten the load. The ratchet must not be accidentally released due to malfunction during the operation. must be taken into consideration.

[0008]

[Means to solve the problem]

This invention provides a method for tightening a load using a load tightening machine with the belt wrapped around the load. During tightening work, make sure that the ratchet is working properly, and prevent the ratchet from accidentally operating due to malfunction. On the other hand, the tape wound on the reel after the tightening work is completed. When removing the reel, simply release the ratchet and allow the reel to rotate freely. It provides a device that can be released. Therefore, what the present invention has constructed as a means is a system that is rotatably supported on the machine frame. a reel, a ratchet wheel fixed to the shaft end of the reel, and the ratchet A drive that is oscillated on the same axis of the wheel and drives the ratchet wheel in forward rotation. A drive lever with a movable pawl and a ratchet wheel that is pivotally supported on the machine frame and prevents the ratchet wheel from reversing. In the load tightening machine, the drive claw is rotated by a drive lever. It is freely pivoted, and a pawl piece and a ratchet release piece are protruded from the outer periphery of the pivot support. The anti-reverse pawl is provided with a ratchet wheel on the outer periphery of the shaft portion of the pawl. The ratchet tooth is provided with a reversal prevention claw piece that can freely engage and a ratchet release recess. and rotate the drive claw in the opposite direction with respect to the drive lever, and also rotate the drive lever in the opposite direction. When the ratchet release piece and ratchet release recess are pushed down toward the anti-rotation pawl, The ratchet release recess is configured to fit into each other, and the ratchet release recess is configured to fit into each other. Prevents reverse rotation when receiving the push-down force from the ratchet release piece through the push-down movement of the moving lever. The concave portion is designed to prevent reverse rotation so that the pawl piece can be rotated in the direction in which it separates from the ratchet teeth. The feature lies in that it is configured to be offset from the support shaft of the retaining pawl.

[0009]

【Example】

Embodiments of the present invention will be described in detail below based on the drawings.

0010 In one embodiment of the present invention shown in FIG. A reel 3 supported in a holding manner and a ratchet mechanism for rotationally driving the reel 3 4 and a belt loosening prevention device 5.

[0011] The machine frame 2 has a flat plate part 6 and one side of the flat plate part 6 is bent and raised. The upright wall 7 and the box-shaped housing 8 formed by bending at one end of the flat plate part 6 are It is integrally formed from a single metal plate.

0012 The housing 8 includes a front wall 9 that is bent upright from one end of the flat plate portion 6, and A top wall 10 that is horizontally bent from the front wall 9, and a top wall 10 that extends downwardly on both sides of the top wall 10. It is composed of bent side walls 11, 11, and opens the lower and rear sides of the housing 8. I'm talking.

[0013] In addition to the one metal plate, a support wall 12 made of a second metal plate is connected to the upright wall 7. They are arranged almost parallel to each other and are fixed to the flat plate part 6 by welding or the like. The vertical wall 7 and the support wall 12 constitute a bearing for the ratchet mechanism 4.

[0014] The reel 3 has a small diameter shaft end (not shown) connected to the upright wall 7 and the support wall 12. Although not shown, it is rotatably supported by inserting it into the upright wall 7. A male thread is formed on the inserted shaft end, and a nut is fastened to the male thread. Therefore, the rotation of the reel 3 with respect to the upright wall 7 and the support wall 12 depends on the tightness of the nut. Dynamic frictional resistance can be increased or decreased. This reel 3 has a bell opened in the diametrical direction. The slit 3a is connected to the free end 3b of the reel 3 through an opening 3. c. Note that the free end 3b of the reel 3 has a slightly protruding flange 3d. have

[0015] The ratchet mechanism 4 locks the shaft end of the reel 3 between the upright wall 7 and the support wall 12. A ratchet wheel 13 that is externally fixed to the A drive lever 14 that can be swung at the top, a drive claw 15 and a reverse rotation prevention claw 1, which will be described later. It consists of 6.

[0016] The drive lever 14 has a ratchet wheel between the upright wall 7 and the support wall 12. It has bifurcated portions 14a, 14a located on both sides of the lever 13, and the bifurcated portions 14a, 14a. is extrapolated to the shaft end of reel 3, and is rotatable in the swinging direction on the shaft of reel 3. , a handle 17 is arranged at the tip of the drive lever 14 and is arranged substantially parallel to the reel 3. Be prepared.

[0017] The drive claw 15 is located between the forked parts 14a, 14a of the drive lever 14. Both are rotatably supported by the drive lever 14 via a support shaft 18, as shown in FIGS. 2 and 4. As shown, the ratchet teeth 1 of the ratchet wheel 13 are attached to the outer periphery of the shaft support 19. A drive claw piece 20 and a ratchet release piece 21 that can be engaged with each other are protruded from 3a.

[0018] As shown in FIGS. 2 and 4, the anti-reverse claw 16 is attached to a support wall via a support shaft 22. 12, and a ratchet wheel 13 is rotatably supported on the shaft support 23. A reversal prevention claw piece 24 that can freely engage the ratchet teeth 13a and a ratchet release recess 2 5 is provided, and the direction in which the anti-reverse claw piece 24 is always engaged with the ratchet tooth 13a is provided. It has a spring 26 that biases the anti-reverse claw 16 to rotate.

[0019] The belt loosening prevention device 5 is installed in a housing 8 and is shown in FIG. As shown in FIG. It is located in

[0020] The pressure contact member 28 has a pressure contact portion 30 having an arcuate cross section and in contact with one side of the belt 27. A large number of anti-slip protrusions 31 are protruded from the surface of the pressure contact portion 30. The pressure contact member 28 is moved around the support shaft 32 so that the It is rotatably supported on both side walls 11, 11 of the housing via the housing, and the pressure contact part 30 is normally It has a spring 33 that rotationally biases the pressure contact member 28 in the direction of advancing toward the belt 27. There is. Note that the pressure contact portion 30 advances to the belt 27 due to the rotation biasing force of the spring 33. In the pressed state, the pressing member 28 is stopped by a stopper 34.

[0021] The guide member 29 supports the belt 27 pressed by the pressure contact portion 30. a supporting portion 35, and a guide portion 29 located before and after the supporting portion 35 and bent downward. a, 29b, and as shown in FIGS. 1 and 4, one side wall 11 of the housing 8 A knob portion 37 is provided which extends laterally from a notch portion 36 formed from the lower edge of.

[0022] As shown in FIGS. 3 and 4, the guide member 29 is engaged by a locking means 38. releasably engaged. That is, the locking means 38 is configured so that the guide member 29 is inside the notch 36. a hook portion 39 that holds the neck portion 29a of the guide member in a state where the hook portion The locking means 38 is inserted through the support shaft 40 so that the locking means 39 can be retracted from the notch 36. It is rotatably supported on both side walls 11, 11 of the housing, and the hook portion 39 is normally cut off. It has a spring 41 that rotationally biases the locking means 38 so as to advance into the notch 36. In addition, in the illustrated example, the locking means 38 and the pressure contact member 28 are constituted by separate members, Both can also be constructed from one integral member.

[0023]

[Effect of the example]

Next, a more detailed structure and operation of the above embodiment will be explained.

[0024] The belt 27 used for the load tightening of the present invention is made of woven or woven nylon or other tough fibers. It is a long belt-like belt formed by It forms a roll 42 and is used by being fed out from the roll.

[0025] The example shown in the figure shows an example in which the belt 27 that is wrapped around the packaged item is tightened by the load tightening machine 1. The belt 27 that has been let out is wrapped around the object 43 to be fastened. They are connected by a cable 44.

[0026] The buckle 44 is made by hammering a single metal plate, as shown in FIGS. 2 and 5(A). It is formed by punching and bending the punched piece with a press, and it is rectangular. A frame-shaped base portion 45 and parallel arrangement on two opposing sides 45a, 45a of the base portion 45. The winding part 46 has a horizontal part 46a and an inclined part 46b. In addition, the base portion 45 is are connected to two opposite sides 45a, 45a.

[0027] The belt 27 is wound around the buckle 44 along the path shown in FIG. In this state, the buckle 44 only allows the belt 27 to move in the tightening direction, and loosens the belt 27. Do not allow movement in any direction. A buckle with such a function has a structure as shown in the illustration. In addition to the above configuration, various known configurations can be adopted.

[0028] The belt 27, which is stretched around the object 43 via the buckle 44, is 42, and the load tightening machine 1 uses such a belt 27 as a conventional belt. Tighten in a continuous state without cutting.

[0029] First, the belt 27 is stretched over the object 43 from the end 27a to the load tightening machine 1. In the load tightening belt portion 27b before reaching the buckle 3 (in the illustrated example, before reaching the buckle 44), The belt loosening prevention device 5 of the load tightening machine 1 is set. That is, as shown in FIG. When the operating lever portion 38a of the locking means 38 is pressed down against the spring 41, the hook portion 39 is cut. Since the guide member 29 is retracted from the notch 36 and disengaged from the guide member 29, the guide member 29 As shown in FIG. 3(B), the guide member 29 is removed downward from the lower opening of the notch 36. and the lower end of the housing 8 is opened 47. Therefore, from this opening 47, the belt It is possible to incorporate the load tightening belt portion 27b into the housing 8. After installing the load tightening belt portion 27b, cut the guide member 29 through the knob 37. All you have to do is pull it up into the notch 36, and when pulling it up, guide the cam part 39a of the hook part 39. Since the locking means 38 is pressed by the neck 29a of the door member 29, the locking means 38 is pressed against the spring 41. After automatically retreating against the resistance, when the guide member 29 is completely pulled up, the spring 41 The guide member 29 is moved forward and the neck portion 29a of the guide member 29 is held by the hook portion 39. Therefore, this As a result, the load tightening belt portion 27b can be moved vertically by the pressure contact member 28 and the guide member 29. It is held between the two.

[0030] After setting the belt loosening prevention device 5, move the load tightening machine 1 along the longitudinal direction of the belt. To move it, press down the release lever part 28a (Fig. 2) of the pressure contact member 28. Just tighten it. As a result, the pressure contact member 28 pushes the pressure contact portion 30 against the spring 33. The load tightening belt portion 27b is released from being held by the load tightening belt portion 27b. Therefore, it becomes possible to move the load tightening machine 1 along the belt 27.

[0031] Subsequently, the non-loading belt 27 continues from the buckle 44 to the roll 42. The root portion 27c is inserted into the slit 3a of the reel 3. This insertion work is This is made possible through the opening 3c of the slit 3a in the free end 3b of the roll 3. figure In the illustrated embodiment, the opening 3c of the slit 3a in the reel 3 and the belt slack The opening 47 of the guide member 29 in the loosening prevention device 5 refers to the opening 47 of the guide member 29 in the loosening prevention device 5. As described above, the load tightening belt portion 27 b to the belt loosening prevention device 5, and reeling the non-load tightening belt portion 27c. The work of setting the camera to the camera 3 can be done quickly and easily.

[0032] In the set state as described above, grasp the handle 17 and move the drive lever 14. When the belt is swung, the non-load tightening belt portion 27c is wound around the reel 3 and the buckle 4 is 4, tightens the load tightening belt portion 27b while pulling it, and tightens the object 43. Ru.

[0033] That is, in FIG. 2, when the drive lever 14 moves forward as indicated by the arrow F, the drive claw 15 moves forward. The drive claw piece 20 meshes with the ratchet teeth 13a to rotate the ratchet wheel 13 in the normal direction. and rotate the reel 3 in the winding direction W. At this time, the reversal prevention pawl 16 6, while sliding the anti-reverse claw piece 24 on the ratchet teeth 13a. Ru. The winding rotation direction of this reel 3 is counterclockwise in FIG. Therefore, the winding portion 27d of the belt 27 is pulled in a low position near the flat plate portion 6, and then As a result, there is no action to lift the buckle 44, and the load tightening belt portion 2 7b can be towed suitably.

[0034] When tightening the load using the belt 27, the belt loosening prevention device 5 acts effectively. That is, since the belt 27 is pulled while the drive lever 14 is moving forward, the load tightening belt The portion 27b moves in the tightening direction, and follows the movement in the tightening direction to press the pressure contact member 28. Rotate in the direction of arrow X shown in FIG. At this time, the pressure contact part 30 is located behind the belt surface. Since it is retracted, movement of the belt 27 in the pulling direction is not prevented. On the other hand, said Since the belt 27 is not pulled while the drive lever 14 is stopped or retracted, The belt portion of the belt 27 that is stretched around the object 43 due to various reasons 27e may receive a force in the direction of loosening, but against this movement of the belt in the direction of loosening, Then, the pressing member 28 follows and rotates in the direction of the arrow Y shown in FIG. At this time, the pressure The contact portion 30 moves forward toward the belt surface and bites the anti-slip protrusion 31 into the belt surface. At the same time, the belt 27 is strongly held between the pressure contact portion 30 and the guide member 29. Therefore, the belt 27 is prevented from moving in the loosening direction.

[0035] In this way, the pressure contact member 28 has the supporting shaft 32 that constitutes an eccentric shaft of the pressure contact member 28. When the pressure contact member 28 is rotated in the X direction about the eccentric shaft 32 of the The belt is moved backward from the belt, but when rotated in the Y direction, the pressure contact part 30 is moved forward toward the belt. It is said that the structure is designed to move forward.

[0036] When the drive lever 14 swings, when the lever 14 moves back (opposite to the arrow F in FIG. 2), direction), the anti-reverse pawl piece 24 of the anti-reverse pawl 16 engages the ratchet teeth 13. a to prevent the ratchet wheel 13 from reversing, and the drive lever 14 The drive claw piece 20 of the drive claw 15 in the drive lever slides on the ratchet teeth 13a. -14 return movements are possible.

[0037] During the tightening work by reciprocating the drive lever 14, as shown in FIG. , since the drive pawl 15 is in the state where the ratchet release piece 21 is raised and rotated, the drive claw 15 is not driven. Even when the movable lever 14 is moved to the final point of backward movement, the drive pawl 15 remains in the reverse rotation prevention pawl 1. It never touches 6. That is, due to the reciprocating swing of the drive lever 14, the reverse rotation prevention pawl 16 There is no chance that the ratchet will be released accidentally.

[0038] By swinging the drive lever 14, the winding portion 27d of the belt is wound onto the reel 3. When the tightening is completed, as shown in FIG. 5(B), the buckle 44 reaches the roll 42. Cut the belt 27 at a portion C of the belt that is as close as possible to the buckle 44. Just do it. Therefore, the winding section 27 of the belt from the cutting section C to the roll 42 d and the non-load tightening belt portion 27c can be used to tighten the load again.

[0039] After cutting the belt, remove the winding portion 27d of the belt from the reel 3, and Similarly to the above, the locking means 38 of the belt loosening prevention device 5 is released and the guide member 29 is released. 47 and remove the load tightening belt portion 27b from the belt loosening prevention device 5. stomach. At this time, by freeing the ratchet mechanism 4, the belt winding section 2 7d can be easily drawn out from the reel 3.

[0040] That is, as shown in FIG. 4, the drive claw 15 is reversely rotated around the support shaft 18, and If the drive lever 14 is rotated in the backward movement direction R in this state, the ratchet of the drive pawl 15 will be released. The removal piece 21 and the ratchet release recess 25 of the anti-reverse pawl 16 are arranged so that they fit together. It is structured in accordance with the following. Therefore, the drive lever 14 is further rotated in the backward movement direction R. When the ratchet release piece 21 is pressed down and is fitted into the recess 25, reverse rotation is prevented. The claw 16 is rotated against the spring 26. That is, through the downward movement of the drive lever 14, When the push-down force from the ratchet release piece 21 is applied, the anti-reverse claw piece 24 is latched. The ratchet release recess 2 is configured to rotate in the direction of detaching from the ratchet teeth 13a. 5 is configured to be offset with respect to the support shaft 22.

[0041] Therefore, in this way, the anti-reverse claw piece 24 can be separated from the ratchet teeth 13a. If the non-load tightening belt portion 27c of the belt 27 is pulled strongly in the Since the reel 3 rotates freely together with the ratchet wheel 13 which is in the - state, The belt winding portion 27d on the reel 3 can be easily pulled out.

[0042] It goes without saying that the present invention is not limited to the illustrated embodiment. That is, in the example above described a configuration in which the belt 27 is connected and fixed by the buckle 44; Instead of using the buckle 44 for fixing the belt, the both ends of the belt 27 can be The connection and fixation may be performed by means other than this. For example, melt the belt 27 If the belt 27 is made of a suitable material, it is possible to weld both ends of the belt 27. It may be connected and fixed by.

[0043]

[Effect of the idea]

According to the present invention, the load tightening machine 1 is used to tighten the belt while it is stretched over the load. During the tightening work, make sure that the ratchet mechanism 4 functions properly, and ensure that the ratchet mechanism 4 does not malfunction. The check mechanism 4 will not be released accidentally, and on the other hand, after the tightening work is completed, When removing the belt 27 wound around the reel 3, it is easy to use a ratchet machine. There is an effect that the reel 3 can be freely rotated by releasing the mechanism 4.

[0044] In particular, in the present invention, the drive claw 15 is rotated in the opposite direction with respect to the drive lever 14. When the ratchet release piece 21 and the ratchet release recess 25 are fitted together for the first time, Since the ratchet release piece 21 is configured so that the ratchet release piece 21 can be raised during load tightening work, In this state, the reversal prevention pawl 16 may accidentally ratchet when the drive lever 14 swings back and forth. There is no need to release the wheel 13, and the safety of load tightening work can be ensured.

[0045] On the other hand, after the load tightening work is completed, the ratchet is released and the ratchet wheel 13 is rotated. To release it freely, hook your finger on the ratchet release piece 21 of the drive pawl 15. When the drive pawl 15 is reversed, the weight of the ratchet release piece 21 releases the drive pawl. Since the lever 15 can be maintained in the reversed state, the drive lever 14 can be moved in the backward movement direction R. All you have to do is push it in, making the work extremely simple.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a partially cutaway side view showing the fastening action in one embodiment of the present invention.

FIG. 3 shows an example of a belt loosening prevention device, with (A) being a longitudinal side view and (B) being a rear view.

FIG. 4 is a partially cutaway side view showing the release action of the ratchet mechanism in one embodiment of the present invention.

FIG. 5 shows one aspect of a load tightening method carried out using the load tightening machine of the present invention, (A) is a perspective view showing an example of a buckle used in conjunction with load tightening, and (B) is a perspective view showing an example of a buckle used in conjunction with load tightening. It is a perspective explanatory view showing a tightening method.

[Explanation of symbols]

1 Loading machine 2 Machine frame 3 reels 3a Slit for belt insertion 3b Free end 3c opening 4 Ratchet mechanism 5 Belt slack prevention device 8 Housing 13 Ratchet wheel 13a Ratchet teeth 14 Drive lever 15 Drive claw 16 Reversal prevention claw 18 Support shaft 20 Drive claw piece 21 Ratchet release piece 22 Support shaft 24 Reverse prevention claw piece 25 Recess for ratchet release 27 Belt 27b Load tightening belt part 27c Non-load tightening belt part 27d Belt winding part 27e Crossing belt part 28 Pressure contact member 29 Guide member 30 Pressure welding part 31 Anti-slip protrusion 32 Support shaft 36 Notch 38 Locking means 39 Hook part 40 Support shaft 42 rolls 43 Object to be fastened 44 Buckle 47 Open part

Claims (1)

[Scope of utility model registration request] [Claim 1] A reel rotatably supported on a machine frame;
A ratchet wheel fixed to the shaft end of the reel, a drive lever provided with a drive pawl that swings on the same axis of the ratchet wheel and drives the ratchet wheel in forward rotation, and the ratchet wheel is pivotally supported on a machine frame. In the loading machine, the drive claw is rotatably supported on a drive lever, and a claw piece and a ratchet release piece are provided on the outer periphery of the shaft support. The reversal prevention pawl is provided with a reversal prevention pawl piece that can freely mesh with the ratchet teeth of the ratchet wheel and a ratchet release recess on the outer periphery of the shaft portion of the pawl,
The ratchet release piece and the ratchet release recess are configured in a positional relationship in which the ratchet release piece and the ratchet release recess are fitted into each other when the drive claw is reversely rotated with respect to the drive lever and the drive lever is pushed down toward the reverse rotation prevention claw, Furthermore, the ratchet release recess is configured to rotate the recess in a reverse direction so that the reversal prevention pawl piece is rotated in a direction in which it is removed from the ratchet teeth when receiving a depressing force from the ratchet release piece through the depressing movement of the drive lever. A ratchet release device for a load tightening machine, characterized in that the ratchet release device is configured to be offset with respect to a support shaft of a prevention claw.