KR100654786B1 - Low space crane with rail girder - Google Patents

Abstract

A low space crane using a rail girder is provided to reduce a concentrated load by dispersing a vertical load of a weight which is applied to a hook. A low space crane using a rail girder includes a rail girder(200), a hoist frame(410), a support cover section(490), a hook section(500), and a hoist section(400). The hook section includes a sheave and a sheave cover. The sheave is rotatably connected to a wire drum and a wire rope. The sheave and a hook suspending a weight are fixed to the sheave cover. An upper transverse wheel section to which a transverse motor is connected for transverse movement of the hoist frame is fixed to the hoist section.

Description

Low space crane with rail girder {Low space crane with rail girder}

Figure 1a is a schematic installation plan view showing a state in which a conventional double rail crane is installed,

Figure 1b is a schematic plan view showing a hoist portion of a conventional double rail crane,

Figure 1c is a schematic installation state showing a state in which a conventional double rail crane is installed,

Figure 1d is a schematic installation state showing a state in which a conventional single-rail crane is installed in another embodiment,

Figure 2 is an exploded perspective view showing a separation state of the hoist portion and the rail girder according to the present invention,

3 is a perspective view showing a state in which the hoist portion coupled to the rail girder according to the present invention;

Figure 4 is an exploded perspective view showing a state in which the hoist frame and the upper transverse wheel portion disassembled in accordance with the present invention,

5 is a perspective view showing a state in which the hoist frame and the upper transverse wheel unit is coupled according to the present invention;

6 is a front view showing a state in which the hoist portion coupled to the rail girder according to the present invention;

7 is a side view showing a state in which the hoist portion coupled to the rail girder according to the present invention;

8 is an exploded perspective view showing a support roller unit according to the present invention;

9 is a plan view showing a state in which the hoist portion coupled to the rail girder according to the present invention;

10A is an explanatory diagram showing a method for manufacturing a rail girder according to the present invention;

10B is an explanatory view showing another embodiment of a method for manufacturing a rail girder according to the present invention;

10c is an explanatory view showing still another embodiment of a method for manufacturing a rail girder according to the present invention;

11 is an exploded perspective view showing another embodiment of the hoist frame and the upper transverse wheel portion according to the present invention,

12 is a perspective view showing another embodiment of the hoist frame and the upper transverse wheel unit according to the present invention;

13 is a schematic installation state diagram showing a state in which a low space crane is installed using a rail girder according to the present invention;

<Description of Symbols for Main Parts of Drawings>

10, 100: running rail 20: girder

30: shade 40, 400: hoist part

32, 320: Travel wheels 34, 340: Travel motor

49, 490: support cover 42,420: traverse motor

43: traverse wheel 45, 450: reducer

53, 530: Sheave 47, 470: Brake

48, 480: wire rope 50, 500: hook portion

51, 510: Hook 200: Rail girder

220: upper transverse wheel portion 230: bottom transverse wheel portion

240: side transverse wheel portion 250: support wheel portion

251a, 404b, 222a: Pinhole 224, 252: Bucket Pin

410: hoist frame 401: front frame

402: upper frame 403: rear frame

404: connecting frame 404a: fixing groove

490: support cover 520: sheave cover

R: Roller h: Self height

h ': Deflection height H: Installation height

The present invention relates to a low space crane using a rail girder, in particular installed in the girder of the crane increases the vertical travel distance of the hook, reduce its own weight, simply manufactured by manufacturing the hoist structure Low space crane using rail girder which can be installed by reducing cost and using minimum installation space, which reduces the concentrated load by dispersing the vertical load of heavy loads and improves the bearing capacity against the force of rotation moment. .

In general, a crane (CRANE) refers to a machine or a device for lifting and lifting a heavy object horizontally by using power, and the lifting, lifting and lowering of the heavy object, driving, transverse, turning, etc. to move horizontally In addition, these operations are combined with each other to handle a heavy object in a three-dimensional space.

The hoist is used for transporting heavy goods, mechanical disassembly and assembly in factories in warehouses, railway stations and the like. In addition, the hoist is installed on the girder of the crane and is one of the mechanisms for lifting and lowering the load by using a wire rope. The hoist is a pair of a hoisting motor, a reducer, a wire drum, and a hook is installed at the end of the hoisting rope. Lift up the weight.

Such hoists include electric hoists, air hoists, and the like, which include a small electric motor, a pulsating gear with a planetary gear accelerator, an electromagnetic brake that holds heavy loads, and loads. It is a small hoist which concentrated load brakes and the like for adjusting the speed of dust in a narrow container space. It is attached to the end of the jib or used to move the lower flange of the I-beam to the rail and to move the heavy object up and down. There is a way to operate the electric motor by operating a rope on the ground, a method of moving a button, and a remote operation. There are many types of hoists depending on the place of use and the structure of the machine. Low head type used in low ceiling, double rail type running on two rails, single rail crane running rails on the lower flange of the I (I) beam, etc. Use an air hoist to avoid the risk of explosion.

Hereinafter, with reference to the drawings looks at an embodiment of a crane consisting of a double rail type first. 1A to 1C show a state where a conventional double rail crane is installed. Such a double rail crane is provided with a running rail 10 along walls facing each other. The saddle (Saddle, 30) is provided on the upper surface of the running rail 10 along the running rail 10 is formed long.

The lower end of the saddle 30 is provided with a driving wheel 32 to travel while rotating along the running rail (10). The traveling wheel 32 is formed by recessing the center portion with a predetermined width to the inner circumferential surface, and the recessed width is formed to have a width corresponding to the upper surface width of the running rail 10. Therefore, looking at the cross section, the top surface is formed in an approximately "∪" shape, and the bottom surface is formed in an approximately "∩" shape.

That is, the driving wheel 32 is rotated while surrounding the recessed central portion of the traveling wheel 32 on the upper surface of the traveling rail 10. This ensures stability to the rotational direction or flow in the direction perpendicular to the rotational direction while the traveling wheel 32 is moving or stationary while rotating.

Such a plurality of traveling wheels 32 are provided with a traveling motor 34 for providing rotational power to the traveling wheel 32. The driving motor 34 may be provided in each of the driving wheels 32, or may be provided only in one direction of the front or the rear. The driving motor 34 is axially coupled with the traveling wheel 32 to generate rotational force when the power is applied to rotate the axially coupled traveling wheel 32. When the driving wheel 32 rotates, the saddle 30 moves along the traveling rail 10.

In addition, a girder 20 is provided in a direction perpendicular to the traveling rail 10. Bottom surfaces of both ends of the girder 20 are coupled to the top surface of the saddle 30. Therefore, when the saddle 30 travels along the running rail 10, the girder 20 fastened to the top surface of the saddle 30 travels.

In addition, a transverse rail 22 is provided on the upper surface of the girder 20 in a direction perpendicular to the traveling rail 10. The hoist part 40 traverses along the transverse rail 22.

On the other hand, Figure 1b is a plan view showing a hoist portion of a conventional double-rail crane, Figure 1c is an installation diagram of a conventional double-rail crane.

The support cover 49 is provided with a plurality of parts for the lifting of the heavy material (up and down movement of the heavy material) and the transverse by a bolt or a welding method.

Each corner portion of the bottom surface of the support cover 49 is provided with a transverse wheel 43 that serves as a movement means of the hoist portion 40. The transverse wheel 43 is formed in the same shape as the traveling wheel 32, the hoist portion 40 by the transverse wheel 43 along the transverse rail 22 provided on the upper surface of the girder 20. It becomes movable.

And, one side of the support cover 49 is provided with a transverse motor 42 to provide rotational power to the transverse wheel 43. The transverse motor 42 is axially coupled with the transverse wheel 43 through a deceleration process to provide rotational power to the transverse wheel 43. In addition, the transverse wheels 43 on both sides are coupled to each other in a shaft to receive the rotational power of the transverse motor 42 at the same time.

That is, when power is applied to the traverse motor 42, the traverse motor 42 is rotated, and the rotational power of the traverse motor 42 is increased through the reducer 45 which is axially coupled with the traverse motor 42. . This increases the rotational power of the transverse motor 42 by reducing the rotational speed of the transverse motor 42 by the reducer 45.

The increased rotational power of the traverse motor 42 is transmitted to the traverse wheel 43 axially coupled with the reducer 45. As the transverse wheel 43 rotates by the rotational power transmitted by the shaft, the hoist part 40 moves along the transverse rail 22 installed on the upper surface of the girder 20.

In addition, the hoist motor 40 is provided with a hoisting motor 44 for generating rotational power when power is applied, the rotational power of the hoisting motor 44 is a reduction gear 45 is axially coupled to one side of the hoisting motor 44. Is delivered. The rotational power transmitted to the reducer 45 is transmitted to the wire drum 46 coupled to the reducer 45 and another shaft.

The wire drum 46 rotates by lifting power of the hoisting motor 44 to lift the heavy object, one side of the wire drum 46 is engaged with the reducer 45, the other side is fixed to the support plate 41 and upwards. Is rotatably fastened to the drum support is formed to protrude.

Accordingly, the rotational power of the hoisting motor 44 is transmitted to the reduction gear 45, and the rotational power of the hoisting motor 44 transmitted to the reduction gear 45 is transmitted to the wire drum 46. The rotational power transmitted to the wire drum 46 is transmitted to the sheave 47 connected to the wire drum 46 and the wire rope 48.

Then, the brake 47 is fixed to stop the wire drum 46 in case of loosening the fastening by hanging or lowering the heavy goods on the outside of the reducer 45.

The sheave 53 is provided below and below the wire drum 46. Sheave 47 is the hoisting of the wire drum 46 required when the wire rope 48 wound on the wire drum 46 is wound and the heavy rope is suspended on the hook 51 suspended on the hook portion 50. Split power. Sheave 47 is provided with a plurality, the center of the outer peripheral surface of the sheave 47 is formed by recessing the winding groove to the inner peripheral surface to correspond to the wire rope 48.

That is, if the running of the girder 20 and the running of the hoist portion 40 are appropriately adjusted, it is possible to transport the heavy object anywhere in the building.

Then, the heavy object lifted upward is moved to the desired position by adjusting the position in the running and transverse, and then lowered the heavy object downward by the reverse rotation of the hoisting motor 44 to be placed in the desired place.

The conventional single-rail crane shown in FIG. 1D has the same configuration as the double-rail crane, but only attaches the hoist portion 40 to the girder 20 composed of one traversing rail 22 at the end or the bottom thereof. It is configured to run in a suspended state and is used to move up and down heavy objects. As for the traversing rail 22 used in such a single rail crane, a rail using an eye (I) type beam is generally used.

However, the conventional crane configured as described above has the following problems.

First, in the case of a double rail crane, the hoist part 40 is installed on the upper part of the girder 20 which is composed of two transverse rails 22. At this time, the ceiling according to the height h of the hoist part 40 is provided. There is a problem that the space used is essentially accompanied by less ceiling space, thereby lowering the installation height of the crane.

On the other hand, in the case of the single-rail type crane, it is installed in a hanging structure on the girder 20 composed of one traversing rail 22, and its height, such as the double-rail type crane, is removed so that the installation height of the crane is increased. However, the deflection height (h ') of the hook portion 50, which is connected to the wire rope 48 and is suspended in the hoist portion 40 is generated, thereby reducing the distance (head) in which the hook 51 moves vertically. The vertical distance of hanging up is shortened, and thus there is a problem in that the working space is limited.

In addition, the common problem of the crane is that the hoist portion 40 is provided with a support plate 41 to support a plurality of parts. Therefore, there is a problem that the weight of the hoist portion 40 increases, and there is a problem that the material cost increases.

In addition, due to the enlargement of the hoist portion 40, there is a problem in manufacturing difficult to manufacture, there is a problem that the logistics cost to the installation place increases, there is a problem that the noise, vibration is severely generated.

Therefore, the present invention devised in view of the problems of the prior art as described above is divided into two hoist frame is easy to manufacture and transport, easy to install and repair Easy It is an object of the present invention to provide a low-space crane using a rail girder which has reduced weight as a structure and reduced its own load.

In addition, another object of the present invention is to carry out the role of the transverse rail and the local area of the hoist at the same time, and to distribute and support the vertical load acting when the upper and lower parts are bent to suspend the heavy object and to improve the bearing capacity against the action of the rotation moment It provides a low space crane using a rail girder.

In addition, another object of the present invention can simply install the hoist unit by simply inserting into the rail girder using the 'c' shaped hoist frame with the bottom open, forming a roller with a synthetic resin (plastic) having abrasion resistance and rigidity It traverses along the girder, and at this time, it minimizes the wear of the rail girder to provide a low space crane using a rail girder that does not require separate management according to the maintenance and repair of the rail girder.

In addition, another object of the present invention is to form a hook to be suspended in a vertical straight line with the sheave connected to the wire drum and the wound wire rope, hook portion by installing the wire drum and hook to the side of the rail girder as close as possible It provides a low space crane with a rail girder that minimizes the moment of rotation when suspended from heavy objects.

Another object of the present invention is that the hoist part is formed at a height similar to that of the rail girder, so that the height of the hoist occupying the upper and lower parts and the deflection height of the hook part do not occur, thus reducing the installation area and increasing the working area. Provide a space crane.

In order to achieve the above object, the present invention is installed on the girder and as a mechanical device for moving up and down the load by using a wire rope, a hoist part and a hoist part having a support cover for fixing a hoisting motor, a reducer, a wire drum, etc. In a crane for lifting a heavy object by attaching a hook that is connected to a hoisting rope,

A rail girder with contact surfaces formed on all sides and hollowed inside,

A hoist frame formed to be coupled to the rail girder,

Wire drum is formed to be fixed to the hoist frame, the hoist motor for generating a rotational force by applying external power, the reducer for reducing the rotational speed of the hoisting motor, the wire rope is rotated at a reduced rotational speed from the reducer And, support cover portion is fixed to the brake for controlling the rotation of the wire drum,

A sheave hook connected to the wire drum and a wire rope to rotate and a sheave cover for fixing the sheave hook to suspend the sheave and the heavy article;

A bottom transverse wheel part fixed to the hoist frame, a side transverse wheel part, and a support wheel part are formed to rotate in contact with the contact surface of the rail girder, and a hoist part having a fixed upper transverse wheel part connected to a transverse motor for transverse movement of the hoist frame. It is characterized by. The rail girder is formed in an octagonal shape having a greater vertical distance than a horizontal distance, and a horizontal contact surface is formed at the center of the upper portion, and an inclined surface is bent to be inclined downward at a predetermined angle on both sides of the contact surface, and the lower portion is upper Formed to be symmetrical with the surface is characterized in that configured to be hollow.

In addition, the rail girder is cut in half so that the same area around the octagonal shape in the horizontal center to position the pentagonal shape with one side open in a pair of two, characterized in that the end is welded integrally configured do.

In addition, the rail girder is bent to form an approximately octagonal shape by bending a wide metal plate (折 曲) characterized in that both ends are welded integrally configured.

In addition, the rail girder is bent to form an octagonal shape in which one side is opened in a broad metal plate material by a bending method, and the metal plate material is welded at both ends to be integrally configured.

In addition, the hoist frame extends at right angles to a pair of front frames formed in the vertical direction, two pairs of coupling plates each formed at four corners of a circular collar groove formed with a descent collar and formed with through holes. The first upper frame is fixed to the end is formed, the upper plate is composed of a second upper frame formed in a shape facing the upper frame is fixed to the coupling plate made of the same configuration as the coupling plate, the end of the upper frame The rear frame is vertically extended to be formed downward, and is connected to the horizontally perpendicular to the end of the rear frame, characterized in that consisting of a connecting frame formed so that the pinhole is vertically penetrated through the fixing groove to open the inner side.

In addition, the hoist frame has a top frame extending at right angles to a pair of front frames formed in the vertical direction, a rear frame extending vertically downward to the end of the upper frame is formed, horizontally perpendicular to the end of the rear frame It is characterized in that consisting of a connecting frame formed so that the pinhole is vertically penetrated through the fixing groove to open the inner surface.

In addition, the bottom row wheel portion is coupled to the shaft so that the roller is rotated to be partially exposed to the square frame is open at one side is fixed to the bottom end of each front frame bottom of the hoist frame using a bolt, side side wheel is one side is open The roller is fastened to the square frame formed integrally with the roller to be partially exposed and rotated to be rotated and fixed to the bolts on both sides of the upper side of the front frame, respectively, and the support wheel is fitted into the fixing groove of the rear frame It is characterized by.

In addition, the upper transverse wheel portion is a substantially rectangular rectangular frame frame formed with openings at both ends and the bottom end formed with pinholes to which the pin pins are fastened, and a circular collar groove formed in the same configuration as the coupling plate in the front and rear of the fixing frame The formed two pairs of reinforcement plates are fixed by welding to correspond to the bolts penetrated through the coupling plate and the fixed frame, and the pinhole is vertically penetrated so that the bucket pin is fitted in the center of the square frame where the bottom is opened. On both sides of the pinhole, a pair of rollers are exposed to the bottom and are coupled to the square frame so as to be rotated, and one roller is formed so as to be axially connected to the transverse motor so that the wheel part composed of two sets is fitted into the opening part. It features.

In addition, the upper row wheel portion is coupled to the shaft to be rotated by inserting a pair of rollers are exposed to a part of the rectangular frame formed by the bottom plate is open and the bolt is integrally formed, one roller is formed to rotate in connection with the transverse motor shaft It is characterized in that it is configured to be fixed in a pair of two on each outer side of the upper frame.

In addition, the support wheel portion is formed in the center of the rectangular frame open to one side pinhole pin is inserted so that the pin pin is fitted, the roller is exposed on both sides of the pinhole and the shaft is coupled to the square frame so as to rotate.

In addition, the roller is formed of a plastic material having rigidity, characterized in that the contact surface of the rail guard is configured so as not to wear.

In addition, the hook portion connected to the wire drum and the wire rope is in close contact with the side of the rail girder, and formed so that the outer circumferential surface and the hook portion of the wire drum in which the wire rope is released in a vertical direction to be in a straight line to act less the rotation moment It is done.

In addition, the hoist occupying the upper and lower parts when the hoist portion is installed, it is characterized in that it is configured to be installed only the installation height of the hook height does not occur.

The preferred embodiment of the present invention as described above in detail based on the accompanying drawings as follows.

2 is an exploded perspective view showing a separated state of the hoist unit and the rail girder according to the present invention, Figure 3 is a perspective view showing a state in which the hoist unit is coupled to the rail girder, Figure 4 is in accordance with the present invention 5 is an exploded perspective view illustrating a state in which a hoist frame and an upper transverse wheel part are disassembled, and FIG. 5 is a combined perspective view illustrating a state in which a hoist frame and an upper transverse wheel part are coupled, and FIG. 6 is a rail girder according to the present invention. 7 is a side view illustrating a state in which a hoist unit is coupled to a rail girder, FIG. 8 is an exploded perspective view illustrating a support roller unit according to the present invention, and FIG. 10 is a plan view illustrating a hoist unit coupled to a rail girder, and FIG. 10A illustrates a method of manufacturing a rail girder according to the present invention. 10B is an explanatory view showing another embodiment of the manufacturing method of the rail girder according to the present invention, FIG. 10C is an explanatory view showing another embodiment of the manufacturing method of the rail girder according to the present invention. 12 is an exploded perspective view showing another embodiment of the hoist frame and the upper transverse wheel portion according to the present invention, Figure 12 is a combined perspective view showing another embodiment of the hoist frame and the upper transverse wheel portion according to the present invention, Figure 13 is It is a schematic installation state figure which shows the state of the low space crane which installed the rail girder.

Looking at the low space crane using the rail girder of the present invention as shown in the following.

As shown in Figure 2, the contact surface is formed on all sides and the rail girder 200 is hollow inside.

This, the rail girder 200 is formed of a metal material having excellent wear resistance and wear resistance, the shape is formed in an octagonal shape longer than the horizontal distance. In addition, it is manufactured and formed in a structurally calculated size according to the weight of the weight to be put up, and the cross-sectional shape can be configured in the shape of a cylindrical, square, etc., but the structurally the contact action is the most stable and the bearing capacity for the rotation moment It is composed of an improved structure.

 In addition, a horizontal contact surface is formed at an upper center of the rail girder 200, and an inclined surface is bent to be inclined downward by a predetermined angle on both sides of the contact surface. This is configured as a structure for dispersing the vertical stress acting perpendicular to the horizontal contact surface of the rail girder 200 by the heavy material when the heavy material is put up.

 In addition, the lower side opposite the upper portion of the rail girder 200 is formed to be symmetrical with the upper structure is to be configured to be hollow inside to reduce its own weight integrally by using a welding method.

In addition, in order to increase the bearing capacity of the rail girder 200 may be configured by welding a reinforcing rod to the reinforcing role on the surface facing each other inside.

Looking at the method of manufacturing the rail girder 200, first, as shown in Figure 10a, by bending a wide metal plate at a predetermined angle cut in half so that the octagonal shape to the same area around the horizontal center It forms two open pentagons on one side.

 Thereafter, the ends of the two bent to form the same size and area to correspond to each other, the rail girder 200 is manufactured by integrally configuring the ends using a welding method.

As another embodiment, as shown in Figure 10b, the rail girder 200 is bent to be approximately octagonal shape by bending a wide metal plate cut to a predetermined size to each end of the welding method The rail girder 200 is fabricated and configured by using a single body.

In addition, as shown in Figure 10c as another embodiment, the rail girder 200 is bent in a octagonal shape of one side is opened wide metal plate material by bending (折 曲), and then metal at both ends The plate 201 is welded and configured integrally.

As shown in Figure 2 to 5, the hoist frame 410 formed to be coupled to the rail girder 200 is configured.

The hoist frame 410 extends at a right angle to the upper ends of the pair of front frames 401 formed in the vertical direction, and is divided into a first upper frame 402 ′ and a second upper frame 402 ″, thereby forming an upper frame 402. ).

And, a pair of couplings are formed in each corner of the four corners of the four corners of the first upper frame 402 'is fitted with a descent collar 411 and two pairs of circular collar grooves 402b' having through holes formed therein. A first upper frame 402 'is formed in which the plate 402a' is fixed to the end by welding.

This, the destination collar 411 is made of a cylindrical shape when the first upper frame 402 ′ and the second upper frame 402 ″ are fastened using the upper transverse wheel part 220, the bolt and the nut, and the bolt Is fixed while penetrating the inner circumference of the descent collar 411, and at this time, a function of maintaining the interval to maintain the horizontal using the difference in the thickness of the descent collar 411. The collar groove 402b ' ) Is configured to have a depth recessed in half of the thickness of the destination color 411. In addition, the current color 411 is configured to prevent the shearing phenomenon (shear deformation).

 In addition, the second upper frame 402 ″ has a coupling plate 402a ″ having the same configuration as that of the coupling plate 402 a ′, and is configured to face the upper frame 402 ′.

The rear frame 403 is vertically extended so as to be downwardly formed at the end of the upper frame 402, and is horizontally connected to be perpendicular to the end of the rear frame 403, but having a pinhole 404b vertically penetrated therein ( 404a) is composed of a connecting frame 404 formed to open the inner side.

Hoist frame 410 as described above is divided into two is easy to manufacture, easy to transport, is configured to facilitate installation, disassembly, repair.

As another embodiment of the hoist frame 410, as shown in Figure 11 to 12, the upper frame 402 extending at right angles to the pair of front frame 401 formed in the vertical direction is formed.

Then, a rear frame 403 is vertically extended to be lowered to the end of the upper frame 402.

Thereafter, the connecting frame 404 is connected to the horizontally perpendicular to the end of the rear frame 403 but the pinhole 404b is vertically penetrated to form a fixing groove 404a open to the side of the rail girder 200. It is composed.

In addition, the hoist frame 410 is configured as light as possible in order to reduce the weight of the self-load applied to the rail girder 200, and also the vertical portion is rounded (Rounding) to prevent the shear phenomenon caused by the load of heavy material It is composed.

The support cover part 490 formed to be fixed to the hoist frame 410 is formed in a cylindrical shape lying down to be in line with the rail girder 200. Then, metal plates for fixing to both sides of the cylinder are vertically fixed by welding.

Such a metal plate is welded to the front of the front frame 401 and fixed integrally, but a portion of the cylinder is opened to the front frame 401 side. This is to visually grasp the phenomena of the wire rope 480 wound on the wire drum 460 which will be described later, and is configured to open to facilitate maintenance.

 In addition, the support cover 490, the hoist motor 440 for generating a rotational force by applying external power, the reducer 450 for reducing the rotational speed of the hoist motor 440, and the reduction from the reducer 450 The wire drum 460 is wound around the wire rope 480 rotated at a predetermined rotation speed, and the brake 470 for controlling the rotation of the wire drum 460 is fixed.

That is, the support cover part 490 is fixed so that the wire drum 460 may rotate inside the cylinder.

The wire drum 460 is fixed to the shaft of the hoisting motor 440 on one side of the cylinder, and the reducer 450 and the brake 470 are mechanically connected to the other side of the cylinder, and are arranged on both sides of the cylinder to connect the shaft. The wire drum 460 is fixed and configured to operate.

The support cover portion 490 has a simple structure and does not need a separate mounting table for fixing, so that the support cover portion 490 is formed in a structure that reduces its weight and is configured to facilitate repair and repair.

The hook portion 500 connected to the wire drum 460 and the wire rope 480 to lift or lower the heavy object in the vertical direction is a pair of sheaves in the sheave cover 520 formed in a hollow hollow frame in an inverted trapezoid shape. 530 is embedded and is connected to the wire rope 480 wound on the wire drum 460 is fixed to the sheave cover 520 using the shaft to rotate.

And, the bottom of the sheave cover 520 is a hook 510 for hanging a heavy object is configured to be fixed using a bolt.

A bottom transverse wheel portion 230, a side transverse wheel portion 240, and a support wheel portion 250 fixed to the hoist frame 410 are formed to rotate in contact with the contact surface of the rail girder 200. The upper row wheel part 220 to which the row motor 420 for the row motion is connected is configured as a fixed hoist part 400.

The bottom transverse wheel part 230 fixed to the hoist part 400 and supported by the rail girder 200 is axially coupled to be rotated by being partially exposed to the roller R exposed to a rectangular frame in which one side is opened, so that the bottom of the hoist frame 410 Square frame is fixed to the bottom end of each front frame 401 by using a bolt.

That is, the roller R of the bottom transverse wheel part 230 is in contact with the bottom of one longitudinal side of the rail girder 200.

In addition, the side transverse wheel portion 240 is axially coupled so that one side is opened and the roller (R) is partially exposed to rotate in a rectangular frame formed by the plate is fastened bolts integrally and bolts on both sides of the upper side of the front frame 401 Are fixed to each.

That is, the roller R of the side transverse wheel part 240 is fixed to the upper portion where the bottom transverse wheel portion 230 is in contact so that the bottom transverse wheel portion 230 is in contact with the same vertical one side upper portion of the rail girder 200. Will be.

In addition, the support wheel 250 is fitted into the fixing groove 404a of the connection frame 404 and fixed.

The support wheel 250 has a pinhole 251a vertically penetrated so that the bucket pin 252 is fitted at the center of the rectangular frame having one side open, and the roller R is partially exposed at both sides of the pinhole 251a. It is configured to be coupled to the square frame and the axis to rotate.

That is, the support wheel 250 is inserted into the fixing groove 404a formed in the connection frame 404 and fastened, and then fixed by the bucket pin 252 fastened to the pinhole 251a and the pinhole 404b. This is configured such that when a heavy object is suspended on the hook portion 500, a pair of rollers R may be in contact with the rail girder 200 at the same time.

That is, the roller R of the support wheel part 250 is in contact with the longitudinal contact surface opposite to the rail girder 200 in which the side transverse wheel part 240 and the bottom transverse wheel part 230 contact each other.

As shown in FIG. 4, the upper transverse wheel portion 220 fastened to the first upper frame 402 ′ and the second upper frame 402 ″ has a pinhole to which the pin pin 224 is fastened in a substantially rectangular shape. 222a is formed and the fixed frame 222 is formed at both ends of which the bottom is cut diagonally and the opening 222b is formed at the bottom.

In addition, two pairs of reinforcement plates 223 formed with the collar grooves 223a formed in the same configuration as the coupling plates 402a and 402a ″ are formed at the front and the rear of the fixed frame 222 to be fixed by welding. It is configured to be fixed by fastening the nut to the bolts penetrated through the plate (402a, 402a ") and the fixing frame (222).

The reinforcing plate 223 is configured to perform a reinforcing role after being fastened with the hoist frame 410 and to improve the holding force of the fixed frame 222 by the heavy load when the heavy object is suspended.

In addition, a pair of rollers (R) are exposed to the bottom and coupled to the square frame on both sides of the pinhole (222a) to which the pin pin 224 is fastened, one roller (R) is a transverse motor (420) It is formed so as to be connected to the shaft and rotated, the wheel portion 221 consisting of two sets are configured to be fitted to the opening portion (222b).

In addition, the wheel part 221 which is slid into the opening part 222b of the fixing frame 222 is fastened by the bucket pin 224 and two rollers R constituting the wheel part 221 are rail girder 200. ) To be in contact with the contact surface at the same time.

As shown in FIGS. 11 and 12, in another embodiment of the upper transverse wheel part 220, a pair of rollers R is partially exposed to a square frame in which a bottom part is opened and a plate to which a bolt is fastened is integrally formed. Is coupled to the shaft to be rotated, one roller (R) is formed to be rotated in axial connection with the transverse motor 420 is configured to be fixed to both outer surfaces of the upper frame (401b), respectively.

The rotation of the transverse motor 420 causes the transverse movement by rotating one roller R of the upper transverse wheel part 220.

That is, the roller R of the upper transverse wheel part 220 is in contact with the upper horizontal contact surface of the rail girder 200.

 In addition, the roller (R) may be formed by forming a metal material, but formed of a plastic material such as urethane rigidity is configured so that the contact surface of the rail guard 200 does not wear, replace when the roller (R) is worn It is configured to reduce the maintenance cost of the rail girder 200 by selecting in a manner.

And, as described above, the outer circumferential surface of the roller (R) partially exposed by being fixed to the square frame is formed to be in contact with the rail girder 200, respectively, along the rail girder 200 by the rotational force of the transverse motor 420. It will rotate.

The hook portion 500 connected to the wire drum 460 and the wire rope 480 is configured to be in close contact with the rail girder 200 as close as possible.

Then, the outer peripheral surface and the hook portion 500 of the wire drum 460, in which the wire rope 480 is released in a vertical direction, are formed to be in a straight line, so that the rotation moment according to the load of the heavy object is less applied to the rail girder 200. will be.

As shown in Figure 1a to 1d and Figure 13, when looking at the installation structure of the crane and the conventional crane of the present invention, the height of the hoist 400 occupies the upper and lower parts when installing the hoist 400 (h) And sag height (h ') of the hook portion 500 is not generated is configured to be installed only the installation height (H).

In addition, when the conventional double-rail type crane illustrated in FIG. 1C is installed, the installation space is required toward the ceiling due to the height h of the hoist part 40 that is raised to the top of the girder 20.

And, when the conventional single-rail type crane shown in Figure 1d is installed to hang on the girder 20, the sag height (h ') that the hook portion 50 is sagging occurs to raise the hoisting distance It is installed to be short.

That is, in the crane of the present invention, the hoist portion 400 is formed at a height similar to that of the rail girder 200, so that its own height h and sag height h 'that occupy the upper and lower portions do not occur, thereby reducing the installation area and working area. It is installed to increase.

Referring to the operation of the present invention configured as described above are as follows.

In order to use the crane, first, by operating the driving motor 340 using the operation switch (not shown in the figure) to move the rail girder 200 along the running rail 100 to the upper portion of the heavy material (not shown in the figure) The hoist unit 400 moving along the rail girder 200 is moved to the upper portion of the heavy object by the driving rotation of the transverse motor 420.

When the hoist unit 400 is positioned above the heavy object, power is applied to rotate the hoist motor 440.

When the hoisting motor 440 rotates, the rotational power of the hoisting motor 440 is transmitted to the reduction gear 450 coupled to one side of the hoisting motor 440.

The rotational power transmitted to the reducer 450 is reduced in rotational speed, the rotational power is increased due to the reduced rotational speed, and the wire drum 460 is rotated with the increased rotational power.

Then, when the wire drum 460 is rotated, the sheave is connected to the wire drum 460 and the wire rope 480 while the winding of the wire rope 280 wound on the outer circumferential surface of the wire drum 460 is released. As the 530 is rotated, the hook portion 500 is lowered downward.

The heavy hook is placed on the hook 510 of the hook portion 500 which is lowered, and when the heavy hook is placed, the wire rope 460 is rotated to wind the wire rope 480. At this time, as the wire rope 480 is wound by the rotation of the sheave 530, the force required to wind the weight is further reduced.

As such, as the wire rope 480 is wound around the sheave 530, the force required to lift the heavy material is further reduced. Thus, it is possible to lift heavy weights with a smaller force.

In addition, by reducing the rotation speed of the hoisting motor 440, the reducer 450 rotates the wire drum 460 with greater rotational force, thereby making it possible to lift heavy weights.

When the heavy object is suspended, placed on the floor, and in an emergency, the brake 470 is operated to stop the wire drum 460.

When the heavy object is lifted upward, the heavy object is positioned above the desired position by adjusting the position of the hoist unit 400 and the position of the rail girder 200. When the weight is positioned above the desired position, it is possible to place the weight in the desired position by rotating the wire drum 460 reversely.

In the above, the present invention has been illustrated and described with reference to specific preferred embodiments, but the present invention is not limited to the above-described embodiments and is not limited to the spirit of the present invention. Various changes and modifications can be made by those who have

As described above, the present invention is configured by dividing the hoist frame into two, making it easy to manufacture and transport, and easy to install and repair. Easy As a structure, the weight is reduced, thereby reducing the self load.

In addition, the role of the transverse rail and the local area of the hoist at the same time, and the upper and lower parts are bent and divided by the vertical load acting when hanging the heavy object, there is an advantage to improve the bearing capacity for the action of the rotation moment.

In addition, the hoist frame can be easily installed by simply inserting it into the rail girder using the open 'c' shaped hoist frame. As a result, minimization of wear of the rail girder is unnecessary and no additional management is required according to the maintenance and repair of the rail girder.

In addition, the hook connected to the wire drum and the wound wire rope is fixed to form a hook to be suspended in a vertical line, but the wire drum and the hook is installed as close as possible to the side of the rail girder to hang the heavy object to the hook This has the effect of minimizing the rotation moment.

In addition, since the hoist portion is formed at a height similar to that of the rail girder, the height of the hoist occupying the upper and lower portions and the sagging height of the hook portion do not occur, thereby reducing the installation area and improving the working area.

Claims (14)

It is a mechanical device that is installed on the girder to move up and down the load by using wire rope. In the crane for lifting a heavy load by installing a hook (hook) to be connected, Rail girder 200 and the contact surface is formed on all sides and the hollow inside, A hoist frame 410 formed to be coupled to the rail girder 200, and It is formed to be fixed to the hoist frame 410, the hoisting motor 440 for generating a rotational force by applying external power, the reducer 450 for reducing the rotational speed of the hoisting motor 440, and the reducer 450 A wire drum 460 on which the wire rope 480 is rotated at a reduced speed from the support, and a support cover 490 on which the brake 470 for controlling rotation of the wire drum 460 is fixed; The sheave 530 is connected to the wire drum 460 and the wire rope 480 to rotate, and the sheave cover 520 to which the sheave 530 and the hook 510 which can hang the heavy goods are fixed. And hook portion 500 to raise or lower the up and down, A bottom transverse wheel portion 230, a side transverse wheel portion 240, and a support wheel portion 250 fixed to the hoist frame 410 are formed to rotate in contact with the contact surface of the rail girder 200. Low space crane using a rail girder, characterized in that the hoist portion 400 is fixed to the upper row wheel portion 220 is connected to the traverse motor for transverse movement (420). According to claim 1, The rail girder 200 is formed in an octagonal shape longer than the horizontal distance, the horizontal contact surface is formed in the center of the upper side, the inclined surface to be inclined downward at a predetermined angle on both sides of the contact surface The bent is formed, the lower portion of the low space crane using a rail girder, characterized in that formed to be symmetrical with the upper surface is configured to be hollow. According to claim 2, The rail girder 200 is the end of the octagonal shape is cut in half so that one side is cut in half so that the same area in the horizontal center to correspond to the two pairs of one end is welded Low space crane using a rail girder, characterized in that integrally configured. The row using the rail girder according to claim 2, wherein the rail girder 200 is bent to have an approximately octagonal shape by bending a wide metal sheet material, and both ends are welded together. Space crane. The method of claim 2, wherein the rail girder 200 is bent to form an octagonal shape in which one side is opened in a bent manner, and then the metal plate 201 is welded to both ends thereof. Low space crane using a rail girder, characterized in that consisting of. The hoist frame 410 of claim 1, wherein the hoist frame 410 extends at a right angle to a pair of front frames 401 formed in a vertical direction, and a descent collar 411 is fitted therein and has a through hole formed therein. A first upper frame 402 'having a pair of coupling plates 402a' formed at four corner portions, respectively, fixed to the ends by a welding method, The upper frame 402 is composed of a second upper frame 402 ″ formed in a shape facing the upper frame 402 ′ by fixing the coupling plate 402 a ″ having the same configuration as the coupling plate 402 a ′. The rear frame 403 is vertically extended to be downwardly formed at the end of the upper frame 402, and is horizontally connected to be perpendicular to the end of the rear frame 403, but having a pinhole 404b vertically penetrating the groove ( Low space crane using a rail girder, characterized in that 404a) is composed of a connecting frame 404 formed to open the inner side. The hoist frame 410 of claim 1, wherein the hoist frame 410 extends perpendicularly to the upper frame 402 extending at right angles to the pair of front frames 401 formed in the vertical direction, and downwards at the end of the upper frame 402. The rear frame 403 is connected to the end of the rear frame 403 and the connecting frame 404 is formed so that the pinhole 404b vertically penetrated through the vertical groove 404a to open the inner surface Low space crane using a rail girder, characterized in that consisting of. According to claim 1, The bottom transverse wheel portion 230 is coupled to the shaft so that the roller (R) is partially exposed to rotate in a rectangular frame that is open at one side, the rectangular frame at the bottom end of each front frame 401 of the hoist frame (410) It is fixed by using a bolt that penetrates, the side transverse wheel portion 240 is axially coupled so that the roller (R) is partially exposed and rotated in a square frame in which one side is opened and the plate to which the bolt is integrally integrally exposed and rotated, and the front frame 401 Low space crane using a rail girder, characterized in that is fixed to the upper both sides of the upper bolt), the support wheel portion 250 is fitted into a fixed groove (404a) of the rear frame (403). According to claim 1, The upper row wheel portion 220 has a fixed frame 222 having an open portion (222b) formed at both ends and the bottom end of the pin hole (222a) is fastened to the bucket pin 224 in a substantially rectangular shape; In the front and rear of the fixing frame 222, two pairs of reinforcement plates 223 having a circular caravan groove 223a formed in the same configuration as the coupling plates 402a and 402a "are fixed by welding. The pinhole 222a vertically penetrated so that the nut pin 224 is fitted in the center of the square frame in which the nut is fixed to the bolt penetrated through the coupling plate 402a and 402a "and the fixing frame 222 is formed. On both sides of the pinhole 222a, a pair of rollers R is exposed to the bottom and is coupled to the square frame so as to rotate, and one roller R is formed to be axially connected to the transverse motor 420 to rotate. Wheel portion 221 consisting of a set of dogs is characterized in that the configuration is fitted to the opening portion (222b) Low space crane with rail girder. According to claim 1, wherein the upper row wheel portion 220 is coupled to the shaft so that the bottom portion is opened and a pair of rollers (R) is inserted to rotate in part exposed to a rectangular frame formed integrally with the plate is fastened bolts, one roller ( Low space crane using a rail girder R is formed so as to be connected to the rotating motor 420 is rotated axially fixed to each one of the two pairs on both outer surfaces of the upper frame (402). According to claim 8, The support wheel 250 is a pinhole 251a is vertically penetrated so that the bucket pin 252 is fitted in the center of the rectangular frame with one side open, rollers (R) on both sides of the pinhole (251a) Low-explosion crane using a rail girder, characterized in that is configured to be coupled to the shaft and the square frame to rotate partly exposed. 10. The low space crane according to claim 9, wherein the roller (R) is formed of a plastic material having rigidity so that the contact surface of the rail guard 200 is not worn. The wire drum 460 of claim 1, wherein the hook portion 500 connected to the wire drum 460 and the wire rope 480 is in close contact with the side of the rail girder 200, and the wire rope 480 is released in the vertical direction. Low space crane using a rail girder, characterized in that the outer circumferential surface and the hook portion 500 is formed to be in a straight line to act less the rotation moment. The height of the hoist 400 and the sag height h 'of the hook part 500 are not generated and the installation height H does not occur. Low space crane using a rail girder, characterized in that configured to be installed only.

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