JPS6339515B2 - - Google Patents

Description

[Detailed description of the invention] 〔Technical field〕 The present invention relates to a drive device for a self-propelled cargo handling truck.

[Conventional technology]

FIG. 1A is a diagram showing an embodiment of a conventional cable crane for construction work, in which 1 is a trolley, a horizontally movable trolley 2, a movable pulley 66, and a horizontally movable trolley 2.
It consists of fixed pulleys 67, 67' supported by. 4, 4' are towers, and both towers 4, 4' are towers.
A track rope 5 is installed between 4' and fixed to each tower 4, 4'. 10 is a heavy object to be transported, one end of which is fixed to a retainer 72 of one tower 4', a fixed pulley 67', a movable pulley 66, a fixed pulley 67, and fixed pulleys 68, 6 supported by the tower 4.
8', by a suspension rope 11' engaged with a hoisting winch 3' fixed to the ground etc. 64,
It remains suspended at the position of the movable pulley 66 and can move horizontally together with the trolley 1.

6 is a winch for horizontal movement arranged and fixed on the ground 64, and the winch 6 and the tower 4,
Fixed pulleys 69', 69, 70, 7 supported by 4'
1 and 71', one side of the towing rope 7, which is arranged in a ring (also called endless) and includes both ends of the trolley 1, is connected to both ends of the rope by winding one end in the winch 6 and letting out the other end at the same time. The trolley 1 is moved, and the wheels 8 of the trolley 2 engaged with the track rope 5 drive the trolley 1 and the integrated trolley 2 while rolling.

At this time, in order for the trolley 1 to ascend the left half of the center line 9 of the catenary curve of the track rope 5, the winch 6 must be rotated in the direction of the arrow in the figure, and the fixed pulleys 71, 7
While reeling in the towing rope 7 on the 1' side, at the same time let out the towing rope 7 on the fixed pulleys 69, 69' side, and in order to ascend the right half, reverse the winch 6 and unwind the towing rope 7 on the fixed pulleys 69', 69' side. 7 and loosens the fixed pulleys 71 and 71' side.

By the way, as mentioned above, in order to move the trolley 1 horizontally to the left side of the figure, the suspended suspension rope 11' must move the fixed pulleys 67 and 68 without moving the movable pulley 66 up and down. The movable pulley 66 and the fixed pulleys 67, 67' must automatically slide on the suspension rope 11' so that the length is short between the fixed pulley 67' and the restraining device 72, but the heavy object 10 is lighter than the weight of the rope between the fixed pulleys 67 and 68, the fixed pulley 67 does not slide, and only the movable pulley 66 and the fixed pulley 67' slide, and as a result, the movable pulley 66 moves upward, The suspension rope 11' hangs down between the fixed pulleys 67 and 68, as shown by the dotted line in the figure, resulting in a dangerous situation. On the other hand, when the trolley 1 moves horizontally to the right side in the figure, the suspension rope 11' is dangerous to hang down between the fixed pulley 67' and the retainer 72 as shown by the dotted line in the figure for the same reason as above. .

In the case of a cable car, the trolley 1 shown in the figure is composed of a horizontally movable trolley 2 and a gondola, and the horizontally movable trolley 2 includes a movable pulley 66 and fixed pulleys 67, 6.
7' is not attached.

FIG. 1B is a diagram showing an embodiment of a self-propelled elevator for construction use, and 12 is an elevator, which is composed of a lifting cart 13 and a winding winch 14.
15 is a rigid rail, and 16 is an arm, each of which is fixed to a construction 17, and the lift 12 is moved along the rail 15 through wheels 19 while winding a rope 18 suspended from the arm 16 with a winch 14. Drive by rolling.

At this time, as the elevator 12 ascends, the amount of the rope 18 wound around the winch 14 increases, and the weight of the rope is added to the weight of the elevator.

In addition, in the case of a winch-based elevator, the hoisting winch 14 shown in FIG. The weight is added to the self-weight of the lifting trolley.

Furthermore, in another example of a conventional elevator, both the rigid rail 15 and the wheels 19 shown in FIG.
There is also a self-propelled elevator in which the above-mentioned pinion is rotated by a motor provided above, and the elevator is driven along with the rack that engages with the pinion. 18 mag is not used.

[Problems with conventional technology]

In the case of the cable crane described in the previous section, the work of hoisting ropes and suspension ropes across a large number of pulleys is complicated and time-consuming, and therefore, the trolley and cart must be attached and detached at arbitrary positions on a long track rope. If this is very difficult, and in order to prevent the suspension rope from hanging down during the horizontal movement of the trolley, it is necessary to operate both winches for the towing rope and for the suspension rope alternately or simultaneously, or to reduce the amount of weight to be carried. It is necessary to take measures such as suspending a separate counter weight from the movable pulley or installing metal fittings to prevent the wire rope from sagging, resulting in extremely poor work efficiency.

In addition, in the case of a suspended rope elevator, the required power for the winch is increased by the increase in rope weight, and a motor with a correspondingly higher output must be mounted on the tower. The weight increases, the dimensions become large, and the equipment cost becomes expensive. In addition, in the case of rack-type elevators, the work of fixing a rigid and long rack to a building while matching the tooth profile at each connection point is difficult to construct, and furthermore, misalignment of the tooth profile after construction occurs during lifting and lowering operations. It also becomes a risk factor.

[Disclosure of the invention]

In order to solve this problem, the present invention has a flexible long male thread stretched horizontally or vertically as a track, and a cargo handling truck has a built-in gear that meshes with the split female thread or male thread that is screwed into the male thread. , by rotating or braking the split female screw or gear with a prime mover or brake installed on the cargo handling vehicle, a thrust or drag force in the axial direction of the male screw is obtained against the thread of the male screw. This aims to simplify the driving, braking, and attachment/detachment of the trolley, thereby solving the above-mentioned problems.

The present invention will be explained below with reference to embodiments shown in the drawings.

FIG. 2 is a diagram showing an embodiment of the cable crane according to the present invention, in which the same reference numerals as in FIG. 1A indicate the same parts. In the figure, the horizontal moving trolley 2'
Although not shown, since it is a self-propelled type with a prime mover mounted on the tower, it can be freely raised and lowered by remote control at any climbing angle to the right or left of the center line 9 of the catenary curve of the flexible track rope 5'. can do.

Examples of each component of the present invention are shown in detail in FIG. 3 and the subsequent figures.

FIG. 3A is a detailed view of the trolley 1' in FIG. 2, where the same reference numerals as in FIGS. They are a sectional view and a detailed view of part B.

Reference numeral 20 denotes a gear, which meshes with a thread 21 of the track rope 5', as shown in Figure C. 22
is a shaft integral with the gear 20, and is rotatably held on the horizontally movable carriage 2' via bearings 23 and 23'.

A gear 24 is fixed to one end of the shaft 22 and meshes with another gear 25. Reference numeral 26 denotes an electric motor, and the gear 25 is fixed to the tip of the rotating shaft 27, and the rotating shaft 27 is rotatably held on the horizontally movable cart 2' via a bearing 28.

To operate the trolley 1' shown in FIGS. 3A and 3B, the electric motor 26 is energized by operating a remote switch (not shown) to rotate the rotary shaft 27. Then, the rotational force is transmitted to the gear 20 via the gears 25 and 24, and the helical teeth 29 of the gear 20 shown in FIG. The reaction force can propel a trolley 1' consisting of a horizontally movable truck 2' and a hoisting winch 3 in the axial direction on the track rope 5'.

Reference numeral 30 is a presser roller, which is used to prevent the gear 20 from floating up from the track rope 5'; however, in the case of light cargo handling, the presser roller 30 can be moved by removing the plate number 31. By releasing the gear 20, the male thread and the gear 20 can be freely engaged and detached at any position on the long track rope 5'.

The track rope 5' shown in FIG. The thread lead 34 is formed by winding the thread into a shape, and the material for the screw outer layer wire 33 is as shown in Fig. circular, b
A steel wire with an arbitrary cross section such as a semicircle as shown in the figure, a rectangle as shown in c, and a trapezoid as shown in d may be used, or a stranded steel wire as shown in Fig. e may be used.

Furthermore, the ready-made wire rope 32 shown in FIG. Alternatively, as shown in Figure b, a strand 36 may be made by twisting the wires 35, and a plurality of strands 36 may be twisted together.

FIG. 4A is a detailed view showing another embodiment of the trolley 1' in FIG.
In addition, the same reference numerals as in Fig. 3 indicate the same parts, and B and C in the same figure are a partially cutaway view of E-E in Fig. A and F, respectively.
FIG. Numeral 37 is a nut whose female thread 38 is screwed into the male thread 21 of the track rope 5', as shown in FIG.
The nut 37 is divided into two parts, 37' and 37'', at the joint 39 so that the male thread and the female thread can be freely engaged and removed at any position on the long track rope 5'. During operation, the two divided parts are connected together at the flange 40 with bolts 41 as an integral nut 37, and are rotatably held on the horizontally movable cart 2' via bearings 42 and 42'. .

43 is a gear integrated with the nut 37,
The shaft 44 meshes with a gear 45 that is integral with the shaft 44, and the gear 45 meshes with a gear 48 fixed to a shaft 47 of an electric motor 46. Also, the shafts 44 and 4
7 are bearings 49, 49', and bearing 50, respectively.
It is rotatably held on the horizontally movable trolley 2' via.

To operate the trolley 1' shown in Fig. 4 A and B, the electric motor 4 is
The rotating shaft 47 of 6 is rotated, and the rotational force is transferred to the gear 4.
8, 45, 43 to the nut 37, and the thread 38 of the female thread of the nut 37 shown in FIG.
By moving forward against the thread 21 of the external thread of the track rope 5' that is screwed with this, the trolley 1' consisting of the horizontal moving trolley 2' and the hoisting winch 3 is propelled in the axial direction on the track rope 5'. It is what drives it.

Figure 4 D and H are the nuts 37 shown in Figure C above.
FIG. 3 is a partially detailed diagram showing another embodiment of the invention, in which the same reference numerals as in FIG.

In Figure 2, the nut 51 is divided into two parts at the joint 39 as in Figure C, and a large number of steel balls 53 fitted in the thread grooves 52 are arranged to form a thread lead of the female thread. ing. Therefore, in the nut 51 shown in FIG.
obtains a thrust against the thread 21 of the male screw of the track rope 5' that is screwed together with the steel ball 53, and in this case, the steel ball 53
It performs rolling motion relative to both sides of 1.

The nut 54 shown in Figure E is the steel ball 5 shown in Figure D.
3, a plurality of rollers 55 are arranged in the axial direction of the nut 54, and the rollers 55 are arranged in a spiral along the thread lead of the thread 21 of the orbital rope 5'. A shaft 56, which is integral with the nut 55, is rotatably held in two divided parts 54' and 54'' of the nut via bearings 57 and 57', respectively.

Therefore, in the nut 54 shown in Fig. E,
The roller 55 obtains a thrust force against the thread 21 of the track rope 5' that is screwed therewith,
In this case, the roller 55 is the track rope 5'
It rolls against the ground. Further, numeral 58 shown in FIGS. 3B and 4B is a drive motor for the hoisting winch 3, and 59 is a speed reducer thereof. Furthermore, the trolley 1' shown in FIG. 3A and FIG. The illustrated wheel 8 is also constituted by a driving section using the gear 20 or the nuts 37, 51, 54, and two driving sections are used for one trolley 1'. The effect is the same in both cases, and in this case, the rotational speeds of the gears 20 or nuts 37, 51, 54 of the two driving parts must be synchronized so that both rotations are synchronously rotated. The rotational speeds of the electric motors 26 or 46 of the two driving parts are electrically synchronized, or the rotating parts of the two driving parts are connected by another rotation transmission shaft to synchronize the rotations of both parts. Using already known means such as.

Furthermore, although the above description has been made regarding the case where the track rope is a single track rope, the number of track ropes in the practice of the present invention may be double track ropes, and FIG. 5 shows an embodiment in which a double track rope is used.

The figure shows two horizontally movable trolleys 2' in FIG. The same part is shown, and the helical teeth 29 of the two gears 20 of the horizontally moving cart 2' on both the left and right sides of the figure are shown.
However, as shown in FIG. This embodiment differs from the cases A and B in FIG. 3 in that both rotation drive shafts 22 are directly connected to each other by one rotation transmission shaft 61.

Although the hoisting winch 3 shown in FIG. 5 is shown as one winch 3 for one trolley 1', the present invention is not limited to this, and multiple winches 3 are shown for one trolley 1'. A hoisting winch 3 may be provided, and an electric motor 26 for driving the horizontally movable cart 2' with both left and right power as shown in the figure may be provided.
Although shown as one motor 26 in the figure, the present invention is not limited to this, and the aforementioned motor 26 may be provided individually for each of both the left and right horizontally movable carts 2'. In this case, both the left and right drive parts are electrically driven. The operation and rotational speed of the motor 26 are electrically synchronized.

Furthermore, as mentioned above, the trolley 1' shown in FIG. 5 is shown as one that connects two horizontally movable carts 2' in A and B of FIG.
Instead of the horizontal movable trolley 2' in FIG. 3, the two horizontal movable trolleys 2' in A and B in FIG. Even when the trolley 1' is configured, the effect is the same.

Further, although the explanations in FIGS. 2 to 5 above are for the case of a cable crane, the present invention is not limited to this, and the effects can be obtained even when the present invention is implemented in a cable car. Similarly, in this case, instead of the hoisting winch 3 shown in Figures 2 and 3, A and B in Figure 4, and Figure 5, a box for storing people or luggage is used. (also referred to as a gondola) is suspended from the horizontally movable cart 2' shown in each of the above figures.

FIG. 6 is a diagram showing an embodiment of the elevator, in which the horizontal movable cart 2' and the track rope 5' in A and B of FIG. 4 are both installed vertically, and Two movable carts 2' are each used as an elevating cart 13' and connected by a connecting fitting 60 to form one elevating device 12'.
The same reference numerals as B in FIG. 1, A and B in FIG. 4, and FIG. 5 indicate the same parts.

In FIG. 6, both the left and right lifting carts 1
As shown in FIG.
3. Furthermore, each of the rollers 55 of the nut 54 is screwed into the threads 21 of the male threads of both the left and right track ropes 5', and the two nuts 37, 51, 54 on the left and right are rotated synchronously. To,
A pair of bevel gears 62 and 62' are provided in the rotational drive parts of both the left and right lifting carts 13', respectively, and the left and right bevel gears 62 are connected to one rotation transmission shaft 6.
This differs from cases A and B in FIG. 4 above in that they are directly connected at point 1.

Furthermore, the elevator 12' in FIG. 6 is not equipped with the hoisting winch 3 shown in FIG. It is installed on the lifting cart 13', and the sixth
The track rope 5' shown in the figure is installed vertically as described above, and its upper part is connected to the arm 1 shown in FIG.
6 or the construction 17, and the lower part is fixed to the ground 64 via a metal fitting 65, respectively.

Further, although the elevator 12' shown in FIG. 6 is illustrated as having one drive electric motor 46, as in the case of FIG.
The motor 46 may be provided individually for each 3', and instead of the horizontally movable trolley 2' shown in A and B of FIG. 4, the horizontally movable trolley 2' shown in A and B of FIG. It is also possible to connect the two elevator cars 13' to form a single elevator 12', and furthermore, as shown in FIG. 3, A and B or
1 of the horizontally movable trolley 2' shown in Fig. 4 A and B.
The elevator may be constructed by using a single lifting carriage 13' for each platform, providing an elevator box 63 thereto as an elevator 12', and suspending the elevator 12' from a single track rope 5'.

Although the prime mover for driving the trolley 1' shown in FIG. 3B and FIG. 4A, as well as the trolley 1' shown in FIG. 5 and the elevator 12' shown in FIG. Instead, a combustion engine may be used as the driving prime mover.

Further, the above explanation has been about a method of driving a cargo handling cart consisting of a horizontally movable cart or an elevating cart, etc., but the method of braking the cargo handling cart according to the present invention is described in FIGS. Brakes 26' or 46' (directly connected to electric motors 26, 46 in the figure) provided on each drive section of the trolley 1' shown in the figure and the elevator 12' shown in FIG. 6 brake the rotation of the drive sections. By doing so, the above-mentioned Figure 3 C,
D. As shown in FIG. 4 C, D, and E, a gear 20 or a nut 37, which is built into the driving section and which engages with the male thread 21 of the track rope 5' or which engages with the male thread 21, 51, 54 of the helical teeth 29 of the gear 20 or the nut 3
The thread 38 of the female screw 7 and the steel ball 5 of the nut 51
3. Further, the rollers 55 of the nuts 54 press the threads 21 of the male threads of the track rope 5', and the drag force generated on the threads 21 causes the cargo handling truck to move in the axial direction of the male threads. The vehicle will be braked to a stop.

Furthermore, the above explanation has been about a rope way system that can be used for both traction and track, in which the traction rope for driving a cargo handling cart consisting of a horizontally movable cart or a lifting cart is also used as a track rope. However, the present invention is not limited to this. Instead, even in a rope way system in which the above-mentioned threaded outer layer wire rope according to the present invention is used only as a traction rope and a separate wire rope is used as a track rope, the traction and track separation type are also possible. The effects of the present invention are the same for cranes, cable cars, elevators, etc., and the above-mentioned screw outer layer wire rope is used as the traction rope, and a separate rigid rail is used as the track rail. Even in the way type, the effects of the present invention are similar to those of the cable car, elevator, etc. described above.

4 [Effects] Both the drive device for horizontal movement and the hoisting winch are mounted on the horizontal movement trolley, and each can be operated independently or simultaneously by remote control, allowing both the horizontal movement of the trolley and the lifting of heavy objects. Workability is good because the linked operations can be done freely and easily, and since there is no need to cross the tow rope or suspension rope, installation of pulleys or restraints is unnecessary or can be simplified, and long track ropes can be used arbitrarily. It is easy to install the trolley in this position, and it is safe because there is no hanging rope.

The drive system of the elevator is not a winding type of suspension rope, the weight of the rope is not applied to the drive device, and the threaded outer layer wire rope can be manufactured in long lengths, so no matter how high the building is, the track can be easily maintained. Since there is no need to worry about connecting the rope in the middle, there is no need to add the weight of the rope to the weight calculation of the lifting cart, so the output of the driving motor can be selected to be a correspondingly smaller power output, resulting in a small and lightweight elevator. Then,
It is economically advantageous, and it is also very safe because there is no fear that the thread lead of the rope will shift when installing the threaded outer layer wire rope that is the track rope.

Furthermore, the force point of the thrust or drag of a cargo handling cart, such as a horizontal moving cart or a lifting cart, is determined on the thread of the male thread of the track rope, and a nut that is screwed into the male thread or a gear that meshes with the thread of the male thread is attached to the cargo handling cart. Since the rotational drive part of the cargo handling cart is brought into direct contact with the track rope, the contact area between the drive part of the cargo handling cart, such as a horizontally moving cart or an elevating cart, and the track rope does not slip. The thrust conversion efficiency is high, and by controlling the rotation of the drive unit, the running of the cargo handling cart can be braked and stopped safely and reliably by the drag force of the track rope.

[Brief explanation of the drawing]

FIG. 1A is an explanatory diagram of a conventional construction cable crane, and FIG. 1B is an explanatory diagram of a self-propelled construction elevator. FIG. 2 is a diagram showing an embodiment of the present invention. Figure 3 A shows a detailed view of the trolley in Figure 2, and B and C are sectional views taken along A-A and B in Figure A, respectively.
Figure 2 shows the shape of a gear that meshes with the track made of the threaded outer layer wire rope, Figure E shows an example of the threaded outer layer wire rope, and Figures a to F show the cross-sectional shape of the threaded outer layer material. Figures a and b show the cross-sectional shape of the wire rope used in the present invention. Fig. 4A is a detailed view of another embodiment of the trolley in Fig. 2, B is a sectional view taken along line E--E in Fig. Here is an example of a nut that meshes with. FIG. 5 shows an embodiment using the double track rope of the present invention. FIG. 6 shows an embodiment of the elevator according to the invention. 1, 1'...Trolley, 2, 2'...Horizontal moving trolley,
5'...Threaded outer layer track rope, 12, 12'...Elevator, 13, 13'...Elevating truck, 20...Gear meshing with 5', 26, 46...Electric motor for driving 1' and 12', 26', 46 Brakes for braking '...1' and 12', 37, 51, 54... Nuts that screw together with 5'.

Claims (1)

[Scope of Claims] 1. A cargo handling truck that runs on a flexible long male thread made of a single wire or a plurality of wires stretched horizontally or vertically as a track, and a splittable female thread or male thread that is screwed into the male thread. It has a built-in gear that engages with the thread and a removable presser roller that opposes the thread, and by rotating the female thread or the gear with a prime mover installed on the cargo handling cart, the male thread is rotated against the thread of the male thread. obtain axial thrust,
Moreover, the self-propelled cargo handling trolley is characterized in that the male thread and the female thread or the engagement of the gears can be freely attached and detached so that the cargo handling trolley can be installed at any position on the long male thread. Drive device. 2. On any rotating shaft of a rotary drive unit that includes a prime mover, a gear that meshes with the thread of the female screw or male screw that is screwed into the long male screw, and a gear train that transmits power from the prime mover to the male screw or gear. The drive device for a self-propelled cargo handling truck as set forth in claim 1, characterized in that a brake for braking is provided. 3. A wire rope having a threaded outer layer in which a threaded lead is formed by winding a steel wire or stranded steel wire of an arbitrary shape cross section around the outer diameter of the wire rope in a threaded manner, which is different from the steel wires or strands constituting the wire rope. 2. A drive device for a self-propelled cargo handling truck according to claim 1, wherein the drive device is used as a track for a long male thread.