JP2001037895A - Main rope wire tie - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide main rope wire tie with a pressing means having strong locking performance and durability. SOLUTION: This main rope wire tie X comprises a guide frame 1 with a main rope guide part 2 whose section is curved, a release layer member 21, a pressing means 30 and a main rope guide roller 20. The release lever member 21 is pivotally supported inside the guide frame and always energized by the spring force of a spring member 35 toward an inner wall guide surface 4 of the guide frame. the pressing means 30 is fixed to the inner end of the release lever member for pressing a main rope 5 guide to the inner wall guide surface against the inner wall guide surface. The main rope guide roller 20 is pivotally mounted between opposite side wall boards 6, 6 linked to the main rope guide part 2 to guide the main rope 5 passed between a locking plate 31 of the pressing means 30 and the inner wall guide surface 4 of the guide frame. The pressing means 30 has a skew gear 32, made of plural locking plates 31 with gear-shaped engaging teeth which are layered on the skew, at one end opposite to the inner guide surface 4. The skew gear 32 presses the main rope 5 passed through the guide frame 1 obliquely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a main rope tensioner used for setting a main rope at a work position at a high place at a construction site or the like.

[0002]

2. Description of the Related Art A conventional cord tensioner is disclosed in, for example,
It is disclosed in Japanese Patent No. 327782 and Japanese Patent Application Laid-Open No. 7-171225. The basic configuration described in these publications is, as shown in FIG. 11, a guide frame 1B and a master line of the guide frame 1B supported by the spring force of a spring member 35B. The release lever member 21B constantly urged in the direction of the guide surface 4B and the master rope 5B fixedly provided at the inner end of the release lever member and guided by the master rope guide surface 4B. Pressing means 30 for pressing against a rope guide surface
B.

[0003] In the basic configuration as described above, the master rope 5
When B is pulled in the direction of arrow B, the parent rope 5B folded back by the parent rope gadroller 20B is tensed, but when the parent rope 5B is pulled in the direction of arrow A, the parent rope 5B is loosened.
Then, when the force in the direction of arrow A acts on the master rope 5B, the pressing means 30B is pressed against the main rope 5B so as not to be loosened. That is, the master rope 5B is held by both the pressing means 30B and the master rope guide surface 4B.

In the embodiment described in Japanese Patent Application Laid-Open No. 6-327782, the short horizontal rod-shaped pressing means 3 is used in order to increase the holding force by both the pressing means 30B and the master line guide surface 4B.
The cross section of OB is formed in a circular shape as shown in FIG. 11, and the outer peripheral wall of the pressing means is knurled. On the other hand, the embodiment described in JP-A-7-171225 discloses
Instead of the short horizontal rod-shaped pressing means 30B, the pressing means 30B is a rope engaging member capable of engaging with the master rope 5B.

The pressing means 30B = the rope engaging member is composed of a plurality of claw plates each having a saw-tooth shape formed on an outer peripheral arc edge, and a cross section of an engaging (pressing) portion of the claw plates. The shape is a semicircular arc corresponding to the curvature of the outer peripheral surface of the master rope. The semicircular engagement surface of the engagement of the claw plates formed by laminating a plurality of claw plates is knurled depending on the design.

[0006] However, at present, those skilled in the art know that a knurled groove (including a saw-tooth shape) type pressing means 30B =
In place of the rope engaging member, there is a demand for an improved pressing means 30B that more securely engages with the master rope 5B.

[0007]

SUMMARY OF THE INVENTION In view of the prior art, the first object of the present invention is to provide a main rope tensioner provided with a pressing means which can more reliably prevent the loosening of the main rope. That is. Particularly, in order to obtain a sufficient locking force, the engagement (pressing) portion of the pressing means can be made to bite obliquely with respect to the parent rope. A second object is to easily form a desired biting tooth in an engaging (pressing) portion of the pressing means. A third object is that the pressing means is tough. A fourth object is that the pressing means provided with the squeegee gear, together with the concave and convex grooves formed on the inner wall guide surface of the master rope guide portion, can strongly lock the master rope.

[0008]

According to the present invention, there is provided a main rope tensioner comprising:
A guide frame 1 having a main rope guide portion 2 having a curved cross section, and a release which is supported by the guide frame and is always urged toward the inner wall guide surface 4 of the guide frame by the spring force of a spring member 35. A lever member 21; pressing means 30 fixedly provided at the inner end of the release lever member and pressing the master rope 5 guided by the inner wall guide surface against the inner wall guide surface;
In order to be able to guide the master rope 5 passed between the locking plate 31 of the guide frame and the inner wall guide surface 4 of the guide frame, the support frame 5 is pivotally mounted on the opposing side wall plate parts 6, 6 connected to the master rope guide portion 2. In the master rope tensioner X including the master rope guide roller 20 provided, the pressing means 30 includes a plurality of locking members having gear-shaped locking teeth 31a at one end facing the inner wall guide surface 4. It is provided with a squeegee gear 32 formed by stacking plates 31 in a staggered manner, and the squeeze gear 32 is characterized by being pressed obliquely against the master rope 5 passed through the guide frame 1.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of a main rope tensioner X of the present invention. This one embodiment is also similar to the conventional embodiment,
A guide frame 1 having a main rope guide portion 2 having a U-shaped cross-section; and a guide frame 1 supported by the guide frame and constantly attached to the main frame guide surface 4 of the guide frame by a spring force of a spring member 35. A biased release lever member 21 and a pusher fixedly provided at the inner end of the release lever member and pressing the master rope 5 guided by the master rope guide surface 4 against the master rope guide surface. It comprises means 30 and other requirements necessary for specifying the invention. Therefore, the following description will focus on these basic members.

Reference numeral 1 denotes a metal guide frame, and the guide frame 1 has a main rope guide portion 2 having a U-shaped or curved cross section. Referring to FIG. 1, a plurality of concave and convex grooves 3 such as those formed on the surface of the washing board are formed vertically at a required interval at least in the center of the master rope guide portion 2. Therefore, the guide surface 4 of the inner wall of the master rope guide portion 2 has the concave-convex groove 3 which exerts a function of preventing slippage in the direction in which the master rope 5 is loosened.

Reference numeral 6 denotes an opposing side wall plate forming a part of the all-made guide frame 1. The opposing side wall plates 6, 6 are connected to the main rope guide 2 having a curved cross section. By reference, the bearing extends upward to form a bearing. An upper horizontal shaft 7 is fixedly mounted on the upper end portions (corresponding to one end portions) of these opposed side wall plate portions 6 and 6. A connection fitting 8 having an end channel shape is pivotally supported on the upper horizontal axis 7.
A hook member with a safety lock is generally attached to the connection fitting 8 via a swivel, but is omitted because it is not a specific requirement of the present invention.

On the other hand, a semicircular projecting bearing 9 is provided at the lower end (corresponding to the other end) of the opposing side wall plates 6, 6.
A lower horizontal shaft 10 is horizontally mounted on these protruding bearing portions 9 in a state of being offset outward from the upper horizontal shaft 7. Here, the fixed shaft will be further described. Numeral 11 denotes a central shaft which is horizontally mounted on a portion near the upper part of the opposing side wall plate portions 6, 6, and numeral 12 denotes a support for a small diameter spring member which is horizontally mounted near the lower horizontal shaft 10. Axis.

Next, these four fixed shafts 7, 11, 10,.
The main components of the present invention which are fixed and supported on the guide frame 1 in relation to 12 will be described.

First, reference numeral 20 denotes a master rope guide roller which is supported by the center shaft 11. The master rope guide roller 20 includes a roller body 20a having a circumferential groove, and a cylinder projecting right and left from the center of the roller body 20a. And a cylindrical bearing portion 20b,
The operation plate portion 22 of the release lever member 21 is pressed against one of the cylindrical bearing portions 20b by the spring force of a spring member 35 described later.

Reference numeral 21 denotes a release lever member which is supported by the lower horizontal shaft 10 and is constantly urged toward the inner wall guide surface 4 of the guide frame 1 by the spring force of the spring member 35. Since the release lever member 21 has a slightly complicated shape,
A description will be given with reference numerals assigned to each part.

That is, as shown in FIG. 3, the other end 22b (corresponding to the lower end) is supported by the lower horizontal shaft 10,
On the other hand, a free end portion (corresponding to an upper end portion) 22 a is a long plate-shaped operation plate portion extending to the master rope guide roller 20. A window 23 is formed at the free end 22a of the operation plate 22 so that the index finger and the ring finger can enter therein.
Is provided with a finger rest 24 bent in the cross direction on the outer inner peripheral edge. On the other hand, at the other end 22b corresponding to the bearing of the operation plate 22, an opposing bearing plate 26 (meaning "side plate opposing the other end 22b") 26 connected to the end channel-shaped connecting portion 25 is provided. Is formed. A claw-like support portion 26a projecting from the semicircular projecting bearing portion 9 of the opposed side wall plate portion 6 is formed at the lowermost end of the opposed bearing plate portion 26 which is supported by the lower horizontal shaft 10. .

Reference numeral 27 denotes an auxiliary roller rotatably provided on a movable shaft 28 which is horizontally mounted on a central portion of the operation plate portion 22 near the window 23 and an upper end of the opposed bearing plate portion 26. The auxiliary roller 27 is used to connect the master rope 5 to the inner wall guide surface 4 of the guide frame 1.
When the main rope 5 is pulled in the direction toward the lower end of the guide frame 1 in the case where the main rope 5 is pulled back toward the lower end of the guide frame 1 in the case where the main rope 5 Demonstrate function.

Reference numeral 30 denotes a pressing means fixedly provided on the inner end of the release lever member 21 so as to press the master rope 5 passed along the inner wall guide surface 4 of the guide frame 1. is there. In this embodiment, the pressing means 30 is provided at the other end 22b of the long plate-shaped operation plate 22 and at each inner end of the opposing bearing plate 26 facing the other end 22b. Squeeze (ske) fixed to face surface 4
w) A gear constituting plate.

That is, the pressing means 30 is shown in FIGS.
As shown in the figure, a plurality of locking plates 31 each having a gear-shaped locking tooth 31a at one end facing the inner wall guide surface 4 are staggered, and a squeegee gear ("continuous" 32). A plurality of locking plates 31 are provided with a plurality of stop shafts 3.
3, the operation plate 22 and the opposing bearing plate 26 overlap in a stacked state.

In the present embodiment, the squeeze gear 32 has the highest staggered wave corresponding to the central portion with respect to the inner wall guide surface 4 of the guide frame 1 (“closest to the inner wall guide surface 4”). "), The staggered waves corresponding to the upper and lower positions are lower than the staggered waves at the center.

Therefore, the squeegee gear 32 of the pressing means 30 of the present embodiment presses the master rope 5 passed through the guide frame 1 obliquely, and as a result, the master gear 5 pulled in the loosening direction. As described above, the locking action works as if it were biting together with the uneven groove 3 of the inner wall guide surface 4 described above.

Reference numeral 35 denotes a spring member which constantly urges the pressing means 30 having the squeeze gear 32 against the inner wall guide surface 4 of the guide frame 1. The center of the spring member 35 is wound around the lower horizontal shaft 10. Then, one end 35a of the spring member 35 is pressed against the other end of the pressing means 30 while the other end 3a is pressed.
5b is locked to the support shaft 12.

Next, FIG. 10 shows an example of an embodiment of the present invention. Reference numeral a denotes a steel frame of a building, and reference numeral 5 denotes a main rope (guide rope) stretched along the steel frame. Generally, when working at a high place, the master rope 5 is stretched horizontally. In this case, the main rope 5 is stretched as a whole by passing one end of the main rope through the main rope guide of the “main rope tensioner X”. As described above, the master rope b is stretched by passing the one end side 5a through the master rope guide portion of the guide frame of the master tensioner X. On the other hand, the worker d at the construction site
A safety belt e for working at height is wrapped around the waist, and the other end of the connection rope f connected to the safety belt via a hook is slidably connected to the master rope 5 as appropriate.

In the above-mentioned use mode, when the master rope 5 is tensioned, the master rope 5 has the guide surface 4 of the master rope guide portion 2 and the squeegee gear 32 as shown by the phantom line in FIG. It passes between the pressing means 30. At this time, the window 2 of the release lever 21
When two fingers are inserted into 3 and the release lever 21 is pulled in the release direction, the release lever 21 rotates around the lower horizontal shaft 10 against the spring force of the spring member 35. Then, when the master rope 5 is passed along the guide surface 4, the finger is released from the release lever 21 at an appropriate place. Then, the release lever 21 returns to the pressing direction by the spring force of the spring member 35. Therefore, the master rope 5 is folded, for example, by the master rope guide roller 20, and is appropriately pulled to be in a tension state.

When the master rope 5 is pulled in the loosening direction, the squeegee gear 32 of the pressing means 30 presses the master rope 5 passed through the guide frame 1 obliquely. Together with the concave and convex grooves 3 on the surface 4, the locking action acts as if it bites into the outer periphery of the parent rope 5. Therefore, unless the release lever 21 is pulled in the release direction against the spring force of the spring member 35, the master rope 5 does not automatically loosen.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In one embodiment of the present invention, a plurality of concave and convex grooves 3 are formed on a guide surface 4 of an inner wall of a master rope guide portion 2 so as to exert a slip preventing function in a direction in which the master rope 5 is loosened. However, these concave and convex grooves 3 may be provided obliquely in correspondence with the rows of the locking teeth of the squeeze gear.

[0027]

As apparent from the above description, the present invention has the following effects. (1) Since the engaging (pressing) portion of the pressing means can be made to bite into the parent rope obliquely, a sufficient locking force can be obtained. (2) A squeegee gear formed by stacking a plurality of locking plates in a staggered manner can be formed. Therefore, a desired biting tooth can be easily formed in the engaging (pressing) portion of the pressing means. (3) Since the pressing means has a structure in which a plurality of locking plates are integrally laminated, the pressing means is strong. (4) The pressing means, together with the concave and convex grooves formed on the inner wall guide surface of the master rope guide portion, strongly locks the master rope.

[Brief description of the drawings]

1 to 9 are explanatory views showing one embodiment of the present invention. FIG. 10 is an explanatory diagram illustrating an example of an embodiment of the present invention.

FIG. 1 is a front view.

FIG. 2 is an explanatory view from a perspective.

FIG. 3 is a vertical cross-sectional view of a cutaway of an opposing side wall plate (a release lever member is in a return position).

FIG. 4 is an explanatory diagram of a state in which a release lever member is rotated in FIG. 3;

FIG. 5 is a plan view.

FIG. 6 is a front view of a release lever member.

FIG. 7 is a sectional view taken along line 7-7 of FIG. 6;

FIG. 8 is an explanatory diagram of a pressing member.

FIG. 9 is a schematic explanatory view of a state in which the parent rope is locked (pressed) by both the pressing member and the parent rope guide.

FIG. 10 is a schematic explanatory view showing a general embodiment of a parent rope tensioner.

FIG. 11 is a schematic vertical cross-sectional explanatory view showing one conventional example.

[Explanation of symbols]

X: parent rope tensioner, 1 ... guide frame, 2 ... parent rope guide part, 3 ... concave and convex groove, 4 ... guide surface, 5 ... parent rope, 6 ... opposing side wall plate part, 7
... upper horizontal axis, 9 ... projecting bearing part, 11 ... central axis, 12 ...
Support shaft for spring member, 20: guide line roller, 21: release lever member, 22: operation plate portion, 22a: free end portion, 2
2b: Other end portion, 23: Window, 24: Finger contact portion, 25: Connection portion, 26: Opposing bearing plate portion, 27: Auxiliary roller, 28 ...
Movable shaft, 30 pressing means, 31 locking plate, 31a gear-shaped locking teeth, 32 squeuing gear, 33 locking shaft, 35
Spring member.

Claims (4)

[Claims] 1. A guide frame 1 having a main rope guide portion 2 having a curved cross section, and a spring member 35 pivotally supported in the guide frame.
A release lever member 21 constantly biased in the direction of the inner wall guide surface 4 of the guide frame by the spring force of the guide frame, and a master fixedly provided at the inner end of the release lever member and guided by the inner wall guide surface. A pressing means 30 for pressing the rope 5 against the inner wall guide surface, a locking plate 31 of the pressing means 30 and an inner wall guide surface 4 of the guide frame 1
And a main rope guide roller 20 which is mounted on opposed side wall plates 6 and 6 which are connected to the main rope guide portion 2 so as to be able to guide the main rope 5 passed between the main rope and the main rope. In the case X, the pressing means 30 comprises a plurality of locking plates 31 having gear-shaped locking teeth 31a at one end facing the inner wall guide surface 4.
And a squeegee gear 32 formed by staggering the squeegees.
A parent strainer which is pressed obliquely with respect to. 2. A plurality of concave-convex grooves 3 having an anti-slip function in a direction in which a master rope 5 is loosened is formed on a guide surface 4 of an inner wall of the master rope guide portion 2 according to claim 1. Oyari tensioner characterized by being. 3. The squeegee gear 32 according to claim 1,
Is characterized in that the staggered wave corresponding to the center portion is the highest with respect to the inner wall guide surface 4 of the guide frame 1, and the staggered wave corresponding to the upper and lower positions is lower than the staggered wave at the center portion. Tension tensor. 4. The release lever member 21 according to claim 1,
Has a long plate-shaped operation plate portion 22 extending into the defense member 15, and a window 23 having a size into which a finger can enter is formed in the free end portion 22 a of the operation plate portion 22.
The finger tension part 24 bent in the crossing direction is provided in the outer inner peripheral edge part which forms this.