JPH0439255Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a belt-type traction/hoisting machine, specifically, a belt-type traction machine equipped with a take-up reel, a mechanical brake, and a belt that is wound around the take-up reel.・Regarding winding machines.

(Prior Art) Conventionally, as shown in, for example, Japanese Utility Model Application Publication No. 61-41372, when loading cargo, especially box-shaped cargo, to be loaded on a pallet or truck platform,
In order to prevent damage to cargo or to increase safety against electric shock accidents when working with electric wires, especially live wires, cloth belts or Belt-type traction machines using belts having electrical insulation properties are already known. As schematically shown in FIG. 6, this type of belt-type traction machine has one end of a belt B wound around a movable pulley C wrapped around the outer periphery of the winding drum E of the traction machine body A, and the other end of the belt B wrapped around a movable pulley C. Each belt is fixed to a belt fixing portion D of the machine body A, and the belt B is wound around the outer periphery of the winding cylinder E by rotationally driving the winding cylinder E.

(Problem to be solved by the invention) However, since the belt B in the conventional belt-type traction machine is wound around the outer periphery of the winding drum E, the length of the belt is restricted due to its structure. Furthermore, the amount of winding, that is, the traction and hoisting strokes are also subject to restrictions. Therefore, if the distance between the movable pulley C and the traction machine A is considerably shorter than the set length of the belt B, when the belt B is wound onto the winding cylinder E, the winding amount of the belt B will be , that is,
As the stroke increases, the workability deteriorates, and in extreme cases, that is, when the interval is shorter than the maximum stroke, simply taking up the slack of the belt B can be used to tighten the belt B, for example, when tightening a load. This means that it will not be possible to do so.

The purpose of the present invention is to solve the above-mentioned problems, and it is possible to freely select the length of the belt, and also allows the so-called winding of the belt to be performed without being influenced by the length of the belt. The stroke can be made the minimum stroke required for tightening or tensioning, thereby improving the workability of towing or hoisting operations.

(Means for Solving the Problems) Therefore, in order to solve the above-mentioned conventional problems, the present invention has a frame 1 equipped with a pair of side plates 11 and 12 that rotates the take-up reel 3 of the belt B. A mechanical brake 25 and a drive member 26 are attached to the drive shaft 24 which is freely supported and extends from the reel 3.
The winding drum 31 of the reel 3 is provided with a belt insertion hole 32 that penetrates in the radial direction, and the belt B is movably inserted through the insertion hole 32.

(Function) When carrying out towing or hoisting work by applying a load to one end of the belt B and hooking it to an object to be towed or hoisted, the belt B inserted through the belt insertion hole 32 After pulling the free side by hand or the like until a load is applied to the belt, the belt B is wound around the winding drum 31 of the reel 3 by driving the drive member 26 to rotate the take-up reel 3. Therefore, the towed object can be towed or hoisted with a minimum stroke, and the work efficiency can be improved.

Moreover, since the mechanical brake 25 can reliably prevent reverse rotation of the reel 3 due to the load from the belt B, traction or hoisting can be prevented by continuously driving the drive member 26 in normal rotation. Regardless of whether or not the belt B is slack, the amount of winding of the belt B can be kept to the necessary minimum and the winding can be carried out safely and reliably.

(Example) An example of the belt-type traction/hoisting machine according to the present invention will be described below with reference to FIGS. 1 to 5.

The belt-type traction/hoisting machine shown in FIGS. 1 to 5 can be towed or hoisted using an operating lever 4, and has a pair of side plates 11 and 12 on the inside of each side. The base plates 21 and 22 are attached, and these side plates 11 and 12 and both base plates 21 and 22 are attached to the first
A drive shaft which is fixed by three stay bolts SB1, SB2 and SB3 to form a frame 1, and a reel 3 having a hollow winding drum 31 is integrally formed between the pair of base plates 21 and 22. The drive shaft 24 is supported to rotate freely, and the drive shaft 24 protrudes from one base plate 22, and a mechanical brake 25 (described later) is provided on the outer periphery of this protrusion. A driving member 26 to which the operating lever 4 is removably attached is screwed onto the reel 3 so that the belt B can be hung on the reel 3.

The mechanical brake 25 is connected to the drive shaft 2
A hub body 27 is spline-coupled to the hub body 4, and a ratchet wheel 29 and a plurality of running plates 28, 28 are supported on the outer periphery of the hub body 27.
The axially inner side of the drive member 26 is made to face the lining plate 28 located on the axially outer side of the lining plates 28, and the drive member 26 is rotated by spiraling as the drive member 26 rotates in the normal rotation direction. The third stay bolt SB1 is made to protrude toward the side plate 22 side, and is provided with a reversal prevention pawl 30 that engages with the ratchet wheel 29. Then, the driving member 26 is rotated in the normal rotation direction, and the hub cylinder 2 is rotated through the lining plate 28.
7, the power of the drive member 26 is transmitted to the drive shaft 24 via the hub body 27, and drives the reel 3 in the normal rotation direction, that is, in the traction or hoisting direction. Said reel 3
Rotation in the reverse direction is prevented by the engagement of the reversal prevention pawl 29 with the ratchet wheel 27.

Also, one side end of both base plates 21 and 22 is connected to a third
As shown in the figure, the pedestal surface 2 is bent outward in the axial direction of the reel 3, or, although not shown, bent in the same direction on the mechanical brake side.
1S and 22S, and the first stay bolt SB1 is provided with a first roller R1 that freely rotates to guide the belt B to the winding drum 31 during belt winding. teeth,
A second roller R2 for suppressing the bulge of the belt B wound around the winding drum 31 is rotatably provided, and furthermore, the first stay bolt SB1 and the pedestal surfaces 21S, 2 are provided.
2S, a third roller R3 for lateral pulling guide is made to be rotatable on the axis of the support shaft RB1 provided between the base plates 21 and 22.

As shown in FIGS. 4 and 5, the peripheral wall of the winding drum 31 of the reel 3 has rectangular belt insertion holes 32, 32 larger than the cross section of the belt B.
is provided so that the belt B can freely pass through the winding drum 31 in the radial direction.

In addition, in FIG. 3, J1 is a connector attached to the load side tip of the belt B, and in FIGS. 2 and 3, B1 is a locking belt supported on the frame 1, and as shown in FIG. It is supported by a roller R4 which is rotatably supported by a bolt RB2 between the pair of base plates 21 and 22, and a connecting tool J2 such as a hook is provided at the tip end of the roller R4.

The operating lever 4 for rotating the driving member 26 is detachable from the driving member 26. Preferably, the outer periphery of the driving member 26 is, for example, hexagonal, and a commercially available lever equipped with a one-way clutch is provided. The size is such that a ratchet trench can be engaged with the wrench, so that the wrench can be used.

The reason why the operating lever 4 is made detachable from the drive member 26 is to prevent an operator from inadvertently touching the lever 4 while the connecting belt B is being tensioned.

The present invention is constructed as described above, and in order to perform towing or hoisting work using the towing/hoisting machine of the present invention, the connecting device J1 must be connected to the towed/hoisted object to be towed or hoisted. do. In this case, the other side is free. The belt B is set on the winding drum 31 so that the first roller R1 is located between the load side and the free side of the belt B. However, pull the free side belt B as much as possible with your hand, and then tighten the load side belt B.
It makes you nervous.

After doing this, the operating lever 4 is attached to the drive member 26, and by swinging the lever 4,
The belt B is pulled or hoisted by driving the winding drum 31 and winding the belt B onto the winding drum 31. At this time, when the winding drum 31 rotates in the traction or hoisting direction, that is, rotates forward, the winding drum 31
1 rotates a maximum of one rotation, that is, until the free side belt B is strongly pressed against the winding drum 31 by the load side belt B, as shown in FIGS. slides through the insertion holes 32, 32 from the free side to the load side, but when the winding drum 31 rotates at least once, the belt B on the free side is always moved by the belt B on the load side.
1, the belt B is no longer able to slide through the belt insertion holes 32, 32 due to the forward rotation of the winding drum 31, and the belt B on the free side is It is wound around the winding drum 31 together with the load side belt B, and in this way, the work of towing or hoisting is performed. In other words, when the belt B slips, the so-called no-load rocking of the operating lever 4 always requires only one revolution or less of the winding drum 31.

Therefore, when performing wire tensioning work, for example, regardless of whether or not the insulating belt B connected to the wire to be strung is slack, the free side of the belt B must be fully pulled by hand to reach the load side. This makes it possible to tension the belt B and immediately perform tensioning with the minimum rotation of the winding drum 31. For this reason, the winding drum 31
The number of rotations, that is, the winding stroke can be minimized, and workability can be improved.

In addition, when securing box-shaped cargo on the loading platform of a truck, the pedestal surfaces 21 of the base plates 21 and 22
S, 22S is placed on or attached to the surface of the load to tighten the load, and by doing so, there is less risk of damage to the load by the towing/hoisting machine.

Moreover, when the belt B is wound around the winding drum 31 by swinging the operating lever 4, the load side belt B
Since the belt B on the free side is subject to a load, it is unlikely to be twisted, but if the belt B on the free side has a tendency to twist, there is a risk that it will be wound around the winding drum 31 as soon as it is twisted. While being corrected by the base plates 21 and 22, the belt is smoothly wound together with the load side belt without being reversed or partially folded into the winding drum 31.

(Effect of the invention) The present invention rotatably supports the take-up reel 3 of the belt B on the frame 1 provided with a pair of side plates 11 and 12, and also has a drive shaft 2 extending from the reel 3.
4 supports the mechanical brake 25 and the drive member 26, and the winding drum 31 of the reel 3 is provided with a belt insertion hole 32 that penetrates in the radial direction, and the belt B is movably inserted into the insertion hole 32. ,
The length of the belt B can be freely selected, and the length of the belt B inserted into the belt insertion hole 32 of the winding drum 31 can be adjusted freely.
By moving the belt B, slack in the belt B can be eliminated, so that the winding stroke of the belt B can be minimized, and workability can be improved.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of the traction/hoisting machine of the present invention, Fig. 2 is a front view of the same, Fig. 3 is a side view of the same, Fig. 4 is an explanatory diagram of belt slack adjustment, and Fig. 5 is a belt FIG. 6 is an explanatory diagram of a conventional belt-type traction/hoisting machine. 3... Reel, 24... Drive shaft, 25... Mechanical brake, 26... Drive member, 32... Belt insertion hole, B... Belt.

Claims (1)

[Scope of utility model registration request] A take-up reel 3 of the belt B is rotatably supported on a frame 1 having a pair of side plates 11 and 12, and a mechanical brake 25 and a drive member 26 are supported on a drive shaft 24 extending from the reel 3. A belt-type traction/winding machine characterized in that a belt insertion hole 32 penetrating in the radial direction is provided in a winding drum 31 of a reel 3, and a belt B is movably inserted into the insertion hole 32.