WO2000034171A1

WO2000034171A1 - Simplified crane

Info

Publication number: WO2000034171A1
Application number: PCT/JP1999/006402
Authority: WO
Inventors: Katsutoshi Ichikawa; Yonezo Hideya
Original assignee: Katsutoshi Ichikawa; Yonezo Hideya
Priority date: 1998-12-04
Filing date: 1999-11-17
Publication date: 2000-06-15
Also published as: JP2000169075A

Abstract

A simplified crane that travels overhead, adapted to eliminate troubles involved in moving the crane along straight and curved rails and travel smoothly. Also, a simplified crane that is light in weight, simple, portable, and of small-scale. The simplified crane that travels overhead comprises a shaft in girder rails, spherical bearings holding the girder rails, one of which spherical bearing has a bearing function in a range of fixed solid angle in a semispherical path, the other spherical bearing having a bearing function in a range of fixed solid angle in a semispherical path and a shift function in a range of fixed solid angle, and a shift absorber unit connected to the spherical bearing. The simplified crane that is of small scale further comprises expansible struts and props, and foldable rails, and is arranged so that it can be installed on scaffolding pipes or building bodies.

Description

Description Simple crane Technical field

The present invention relates to an overhead traveling crane that moves, traverses, and moves three-dimensionally up and down a conveyed object, and can effectively utilize a space space in a factory, an office, etc., and safely convey the conveyed object to an arbitrary position. And a simple crane that can move smoothly. Alternatively, the present invention relates to a simple crane having a mechanism capable of folding, expanding, contracting, and transporting, and capable of easily moving a conveyed object to an arbitrary position. Background art

Conventionally, an overhead traveling crane is a machine that moves a three-dimensional space mainly using conveyed objects.It is intended to lift the conveyed object using power, move it horizontally, and transport it to an arbitrary position. Equipment Basically, the traveling rails are installed in parallel, and the gag-rails held on both traveling trolleys installed at substantially right angles to the traveling rails move along the traveling rails. In addition, the traversing entrance with the hoist suspended moves along the gag rail. Among the above-mentioned overhead traveling cranes, traveling and traversing means of movement are classified into electric and manual types, and models are roughly classified into top run type and suspension type. There are strict standards for the installation of traveling rails and assembly of guard rails.

In the manual overhead traveling crane, the prior art measures mainly to improve operability are as follows. That is, for example, there is a device having a mechanism that can shift the support fulcrum of the girder rail in the horizontal direction, for example, with a one-sided traveling doorway. Alternatively, there is a girder-rail having a ball joint / spherical joint mechanism in which each supporting fulcrum of the girder rail has a rotation function of 360 ° and performs a pendulum motion in the running direction. Alternatively, some have a spherical joint mechanism at all connecting points of the traveling rail and the garg rail. These prior arts are disclosed, for example, in Japanese Patent Publication No. 61-31037 "Square One Crane" of Japanese Patent Publication, as an example of using a shift mechanism. An example of the use of the structure is as disclosed in Japanese Patent No. 253991 62, “Overhead traveling crane”:

In the above-mentioned overhead traveling crane's two-way traveling trolley and the traveling trolley mechanism, rollers mainly using bearings that perform linear rolling motion are mainly used.

Here, the field of a crane or a transporter that is smaller than the overhead traveling crane described above will be described. First, if the construction site is not large-scale and there is no carry-in elevator, as a means of carrying in between the externally installed scaffolds, except for heavy objects, manual operation using ropes, aerial work platforms, Light truck cranes, scaffolding pipe jib crane, and the like. For aerial platforms and light truck cranes, move the conveyed object within the range of the jib's rotation, extension, up-and-down movement, and up and down movement, move the conveyed object to a location near the installation scaffold, Will temporarily place the conveyed material on the installation scaffold as a process, and then carry it into the building by manual operation. A simple jib crane that can be installed on a scaffold pipe lifts and lowers the conveyed goods, and moves the conveyed goods within the turning range.

Generally, a ladder-type cargo handling machine is fixed to the wall of a building and mainly moves the cargo up and down. In order to follow the flow of simple assembly, simple disassembly, folding storage and transportation of a simple portable crane, it is necessary to respond to a series of related technologies. However, for example, cranes that can be carried without relying on truck transportation and cranes that can be easily installed and assembled without a beginner or with tools have not been proposed.

For overhead traveling cranes, human factors are indispensable as one of the factors that improve operability. In other words, a worker operating a manually operated overhead traveling crane of the same specification has a considerable difference in operation and safety between the expert and the beginner in all aspects of moving conveyed goods. It is customary to come out.

In the present invention, human factors in operation are considered in average, focusing on the structural aspects of the crane body, and comprehensive measures have been taken to address safety-related mechanical problems.

First, explanation based on the three elements of crane operation, running, traversing, and vertical movement Do:

Running rails require strict installation accuracy. There are inconsistencies in installation that are not conscious and inconsistencies that exceed the practical installation standard values, such as differences in rail spans, slopes and inclinations of each rail, and differences in height between rails.

When the girder rail travels and moves through the above-mentioned inconsistency, various external forces such as tension, compression, up / down / left / right torsion are applied mainly around the joint between the traveling trolley and the girder rail. Internal stress occurs.

On the other hand, the gag-rail body including both traveling trolleys also requires mounting accuracy of mechanical parts and manufacturing accuracy such as span, parallelism, diagonal dimension and height difference between both traveling trolleys: However, when the girder rails move along the travel rails, the girder rails that exceed the standard accuracy that occur unconsciously, or that are not practically used, are mainly caused by both traveling trolleys and girder rails. Various external forces such as tension, compression, up / down / left / right torsion, etc., act around the rail joints, causing internal stress to increase.

As described above, the traveling rail-gadder rail main body generally has a high yield stress against various external forces caused by the misalignment of the traveling rail-gadder rail, so that both the traveling head and the lead-rail are inaccessible. Internal stress is generated in the structure and mechanism around the relatively weak connection between the girder rail and the girder rail.

Due to the overall action resulting from the misalignment of the running rail and the misalignment of the girder rail, the function of the running roller held by both running toes and the traversing roller held by the traversing opening is reduced. There is a problem in that a large amount of hand and force is required to move the conveyed object, and smooth movement is not possible. In some cases, this can lead to a shocking stop in running, traversing, or movement, which is very dangerous.

In overhead traveling cranes with curved traveling rails, the problem associated with the change in the intersection angle between the traveling rail and the girder rail is that the structure and mechanism around the connection between the traveling trolley and the girder rail are mainly twisted to the left and right. And an external tensile force are applied, which causes an increase in internal stress. As a result, the rolling friction resistance of the traveling rollers held by both traveling trolleys increases, and the rollers cannot roll well. I :: As a result, it is difficult to move the conveyed material smoothly to the position of oppression. The rollers on the two-way trolley or the trolley, or if not in good condition, the guide rail or the trolley rests directly above the load when the load leaves the floor. The ability to follow the movement is reduced. This also causes a large swing of the conveyed object due to the slanting of the conveyed object, which is performed unknowingly by the operator. In the conventional structure, by tilting the girder rail with respect to the traveling movement, a horizontal component is generated against the oblique load of the conveyed object, and the operator's bow at the time of starting or stopping the conveyed object I There is a mechanism to reduce the force and the pushing force. When the girder rail travels on an inconsistent traveling rail or curved traveling rail, sufficient functions are provided because external forces such as tension and compression are applied to the vicinity of the connection between the traveling trolley and the rail. There is also a problem that it can not be demonstrated.

Also, in the conventional structure, the shift mechanism in which the supporting fulcrum of the one-side traveling trolley and the girder rail is simply horizontal only has a case where there is a gradient, a fall, or a height difference of each traveling rail, or a curved locus. If the girder rail travels on the running rail, the shift function is incomplete.

Next, the problem of the space of the overhead traveling crane is described. Originally, cranes as a means of transportation have received high praise for their good space utilization rate because they use the idle space at the top of the building without occupying the ground. However, if a large top-run crane is running inside the building, installing a suspension-type manually-operated overhead traveling crane suspended from beams at the top of the building means that a large top-run crane is installed. This limits the travel and traversing range of the mobile crane. In addition, when a top-run type overhead traveling crane is installed, there is a problem in that the mechanical equipment at the top of the floor becomes an obstacle and the pillars that support the traveling rails cannot be installed.

Up to now, in overhead traveling cranes having the same mechanism, it is possible to freely change the model according to the situation at the site, for example, change the top run type to the suspension type, or change the suspension type to the top run type It was difficult to change to a mold.

Accordingly, one of the objects of the present invention is to provide a girder along a straight or curved running rail. Absorbs external forces and impacts around the joint between the traveling rail and the gag rail, which are generated when one rail travels due to misalignment of the traveling rail or a change in the intersection angle between the traveling rail and the girder rail. In addition to reducing internal stress and maintaining the condition of each roller in good condition, the series of functions inherent in overhead traveling cranes can be enhanced without shaking the traveling rails, and conveyed objects can be safely moved to any position. It is an object of the present invention to provide a simple overhead traveling crane that can be moved smoothly and that can be selected from either a Topburn type or a suspension type according to the site in terms of space utilization.

Next, problems in the field of smaller cranes or conveyors compared to the overhead traveling cranes will be described.

Repeating up and down and horizontal movements of conveyed objects many times by manual operations using external scaffolds and stairs to move light objects up and down is inefficient and not suitable for the labor saving era. . In addition, it is difficult for truck crane or aerial work vehicles to carry goods into the building at sites where external scaffolds are installed, because truck crane wires and jib contact the external scaffolds, making it difficult to carry them into the building. There is a similar problem with aerial work vehicles. In addition, if the conditions are poor, such as where the loading area is narrow and there is a lot of ups and downs, the usage efficiency will decrease.

In addition, a simple jib crane mounted on a conventional scaffolding pipe with a two-point support method has a large axial force on the scaffolding pipe with respect to the weight of the conveyed object. If there is an inclination, it is difficult to move horizontally, so it is difficult to move the conveyed object horizontally. In addition, since the fulcrum for mounting the scaffold pipe to the fulcrum is two fulcrums, there is a problem that the lifting and lowering work of the conveyed material is shaken, which is one of the causes of the conveyed material being largely shaken.

In the case of ladder-type cargo handling machines, fixing places for supporting the main body are always required at the upper and middle parts of the hangos, and the floor space required for the cargo handling machines themselves must be larger than expected. If the upper part of the wall is oblique, the vertical adjustment during setting of the upper part of the ladder will be troublesome.

Therefore, another object of the present invention is to take into account the above-mentioned problems of the overhead traveling crane and to perform simple assembly, simple disassembly, and folding on a smaller simple crane, and in terms of installation location. High degree of freedom, easy for beginners It is an object of the present invention to provide a simple crane that can be installed and assembled without tools, and at the same time, smoothly and safely shortens a process and conveys a conveyed object rationally into a building. In the overhead traveling simple crane according to the present invention, the connection mechanism between the one-side traveling trolley and the girder rail includes a spherical bearing holding a shaft connected and fixed to the girder rail; It has a motion function within a constant solid angle range. In addition, the connecting mechanism between the opposite running door and the girder rail is also provided with a spherical bearing that holds the shaft connected and fixed to the girder rail, and this spherical bearing has a constant solid angle in the hemispherical locus. While having a movement function within the range, the girder rail connecting shaft fulcrum can be shifted to any angle direction within the fixed solid angle with respect to the gag-rail longitudinal direction within the restricted shift amount range. It also has functions. Basically, the spherical bearings held by both traveling trolleys are equipped with a self-aligning mechanism, and can withstand the impact load generated when hoisting and lowering the conveyed object with the hoist and chain block. Oil-free bearings that are capable of handling, have low force, low friction, and low sliding friction resistance are desirable.

Here, the two spherical bearings are held by a housing, and this housing is connected to the support bracket of the traveling roller held by the two traveling trolleys with high-strength bolts, is detachable, and is connected to the gadget rail. The shaft can also be attached and detached from the girder rail, so both may be configured as one unit.

Furthermore, a shift-ab to burn unit is provided as a means to increase the efficiency of the spherical bearing function. The shift sorber unit is installed between a spherical bearing having a shift function and a shaft head of an extension shaft connected and fixed to a gag rail, and a coil panel is used. This coil spring is provided with a mechanism that can expand and contract or move in accordance with the shift movable range of the shaft connected to the girder rail. In addition, for the coil / net, a two-stage motion type is desirable to provide two-stage buffering and absorption. Stroke and return force can be set freely according to the operating conditions. Instead of coil panels, mechanisms such as air cylinders and hydraulic cylinders can also be used. The shiftover unit is housed in a housing that includes a spherical bearing, so it can be handled as a single unit, and can be applied to both top-run and suspension types. . Rollers and bearings held on both the traveling trolley and the traversing trolley, which are means for traveling and traversing the above-mentioned overhead traveling simple crane, may be bearings that perform linear rolling motion.

As for the running rails, basically, the dimensional span between the running rails is set to be constant, that is, substantially parallel. Curvature running rails also have different radii of curvature, but dimensional sub-bangs between running rails are installed at regular intervals. If the girder rail is a suspension type, it will be used as long as the conventional method of supporting the traveling rail if the beams of the structure installed on the ceiling surface have a load bearing capacity against the crane body, as in the past. It can be supported using a suspended member or the like. In addition, it is only necessary to increase the strength of the suspension members of the traveling rail or change the support intervals of the suspended members, depending on the suspension load of the hoist and the chain block. It can also be handled by selecting the cross-sectional shape of the running rail body, and the material of the running rail can be freely set.

If the gag rail is of the top-plan type, the pillars and running rails can use general steel H-beams or square pipes, etc., as long as they constitute the basic structural frame of a simple crane running on the ceiling . In this case, it is desirable to fix the columns by placing chemical anchors, etc., if the ground strength of the foundation portion of the concrete column is available. Gadare Ichiru may be Re structures der that connecting and fixing shafts Bok at both ends or top, the shape and material of the shafts metropolitan ₃ girder one rail provided with a mechanism that can be desorbed Bol Bok, etc. are conventionally used It may be what is being done.

The hoisting and lowering means suspended and held by the traversing trolley, which freely moves along the gag rail, are the same as those conventionally used, such as a wire rope hoist, a chain block, and various transport devices.

In the small-scale simple crane of the present invention which is attached to an on-site scaffold pipe or a building or the like and assembled, basically, the span between the straight running rails is set at a constant interval. The girder rail runs along the rail. The traversing trolley held by the girder rail moves in traverse along the girder rail. The hoist and chain block held by the traversing trolley lift and lower the conveyed goods. The traveling trolley section, the traversing port section of this small simple crane, The mechanism of the girder rail equipped with the eaves and the shaft has basically the same configuration as that of the above-described overhead traveling simple crane, and therefore the description is omitted.

In the above-mentioned small simple crane, it is possible to add a shift-ab-to-unit according to the operating conditions.Also, the traversing trolley can use a mechanism that holds the traversing roller, but it must have an oil-free bearing mechanism. In this case, the cross-sectional shape of the girder rail is limited in that the traversing trolley equipped with a non-lubricated bearing structure using round bars and round pipes is wrapped around the girder rail. Traverse Move the moving range. As a mechanism, it has a reciprocating motion function and an oscillating motion function-The traversing trolley including the oil-free bearing mechanism can be freely changed in size and specifications according to the use environment, and may have a shield mechanism as dustproof means One of the features: In this case, it is preferable to use hard chrome plated round bars and round pipes to limit the traversing range of the girder rail.

The basic configuration of a small-scale simple crane attached to a scaffold pipe is the same as that of a simple crane that runs overhead. In the case of this simple crane, a mechanism is provided that allows the traveling rail to be folded by a rail hinge removal / insertion pin. In this case, a mechanism for bending the running rail inward and horizontally with respect to the running rail with the rail joint hinge as an axis by operating a rail joint hinge removing / inserting pin is provided. If the depth of the scaffold is large, the running rail can be extended to handle it. The pair of running rails has a mechanism to hold it to the scaffold pipe at four points with orthogonal fixing brackets. Since this fixture is movable, it is equipped with a mechanism that can be freely moved and fixed according to the scaffolding pipe dimensions, and supports the running rail according to the difference in the dimensions of the scaffold pipe. Jo has a mechanism that allows the user to freely adjust the length. It is desirable to set the angle of this brace at about 45 ° to the running rail.

Moreover, the running rail itself can be extended in accordance with the situation at the site, and a supporting member such as a stick can be added as needed. Having this kind of mobility is also one of the features of the present invention. Furthermore, all the steps of mounting and assembling the scaffold pipe can be performed manually.

In addition, the rail opening of the traveling rail is easy to use for long-term external use. It is preferable to face downward for protection.

The body frame, including the running rails, should preferably be formed using zinc melting and stainless steel:

A small-scale simple crane for mounting and assembling on a building has basically the same configuration as a simple overhead traveling crane.In addition, the traveling rail has a mechanism that can be folded into three parts by rail joint hinges. A mechanism that allows two columns supporting the pair of traveling rails to extend and retract, and a mechanism that allows the walking rail supporting staff to freely adjust the length according to the extension and contraction of the columns. The column fixing frame, which can fix the crane column to the building, has a mechanism that can adapt to the wall thickness and the shape of the wall. Also, the frame can be assembled without using any tools. It has a bolt for tightening. In addition, it is preferable that the main body frame is made of an aluminum material for storage and transport after folding.

The configuration of the present invention is as described below. That is, the girder rail (4), which intersects the traveling rail (1, 1a, lb) almost at right angles, is held by both traveling trolleys (7, 8), and runs along the traveling rail (1, 1a, lb). The traveling trolley (9) mounted on the girder rail (4) suspends the hoist and the chain block (16), and moves overhead along the girder rail (4). A simple crane to run

In the holding mechanism of the connecting portion between the two traveling doors (7, 8) and the girder rail (4),

(A) The guide rail (4) has shafts (5, 6) connected and fixed, and (mouth) one spherical bearing (10) held by the two traveling trolleys (7, 8). ) Has a bearing function within a constant solid angle within a hemispherical locus, while the spherical bearing (11) has a bearing function and constant within a constant solid angle within a hemispherical locus. It has a configuration as a simple crane (FIGS. 1 to 10) characterized by having a shift function at a solid angle.

Alternatively, one of the traveling trolleys (7) has a spherical surface with a shifting function to hold it. A coil spring (30, 3) is mounted between a bearing (10) mechanism and a shaft head (33) attached to the tip of the shaft (5) connected and fixed to the girder rail (4). 0a, 30b) are arranged, and the expansion and contraction of the coil springs (30, 30a, 30b) reduces the shift motion on the shaft (5) of the spherical bearing (10). It has a configuration as a simple crane (FIGS. 1 to 10), which is provided with a shift-absorber unit (12) for absorbing.

Alternatively, the guide rail (4) which intersects the traveling rail (3, 3 e, 3 f, 3 g) at a substantially right angle is held by both traveling trolleys (7, 8). , 3e, 3f, 3g), the trolley (9) mounted on the girder rail (4) suspends the hoist and the chain block (16), and In a simple crane which traverses along one rail (4), a holding machine fe of a connecting portion between the traveling trolleys (7, 8) and the girder rail (4) has (/,,

(A) The girder rail (4) has shafts (5, 6) connected and fixed, and (mouth) one of the spherical bearings (10) held by the two traveling trolleys (7, 8). ) Has a bearing function within a constant solid angle within a hemispherical trajectory, while the spherical bearing (11) has a bearing function and constant within a constant solid angle within a hemispherical trajectory. With a shift function at a solid angle,

The traveling trolley (7) on one side is attached to the tip of the spherical bearing (10) having a shift function for holding and the tip of the shaft (5) fixedly connected to the mechanism and the girder rail (4). A coil spring (30, 30a, 30b) is arranged between the shaft head (33) and the coil spring (30, 30a, 30B). A shift-absorber unit (12) is provided to absorb and absorb the shift motion on the shaft (5) of the spherical bearing (10).

Further, in the case of mounting on a building, the traveling rail (3, 3e, 3f, 3g) is a folding traveling rail, and a column (100, 101) with a telescopic adjustment mechanism and a telescopic adjustment mechanism. It has a configuration as a simple crane (FIGS. 6 to 18) having a cane (102, 103).

Alternatively, a girder crossing the running rail (2, 2 c 2 d) at a right angle ル (4) is held by two traveling trolleys (7, 8), and the traveling rails (2,

2c, 2d), and the traversing trolley (9) mounted on the garg rail (4) hangs a hoist and a chain block (16). In a simple crane traversing along the rail (4),

In a mechanism for holding a connecting portion between the traveling trolleys (7, 8) and the girder rails (4),

(A) The girder rail (4) has a shaft (5, 6) fixedly connected thereto, and (mouth) one spherical bearing (10) held by the two traveling trolleys (ends, 8). ) Has a bearing function within a constant solid angle range in a hemispherical locus, and the other spherical bearing (

1 1) has a bearing function within a constant solid angle range in a hemispherical locus and a shift function at a constant solid angle,

The traveling trolley (7) on one side is attached to the tip of the shaft (5), which is connected and fixed to a spherical bearing (10) mechanism having a shift function to hold and a gag rail (4). A coil spring (30.30a, 30b) is arranged between the shaft head (33) and the above-mentioned coil spring (30, 30a, 30b). A shift-absorber unit (12) for relaxing and absorbing shift motion on the shaft (5) of the spherical bearing (10);

The running rails (2, 2c, 2d) are foldable running rails, and further, when mounted on a scaffold, a scaffold pipe (108) which is a part of a structure to be mounted, and a cane with a telescopic adjustment mechanism (102, 103) having a configuration as a simple crane (FIGS. 11 to 15).

Alternatively, the running rail (1, 1a, lb, 2, 2c, 2d, 3, 3e,

3f, 3g) are running rails having different radii of curvature, and have a configuration as a simple crane (FIGS. 1 to 18).

In a simple overhead traveling crane, the rollers held by both traveling trolleys and the traversing trolley body are always good against the ground contact surface of each rail in order to smoothly move the conveyed goods to any position. What is necessary is just to be in a state. The basic operation of the spherical bearings of the two running gears is as follows. In other words, mismatch points such as spans between the straight running rails, height differences, falls, or slopes that exceed the installation standard value. When the girder rail moves along the traveling rail, external forces mainly due to tension, compression, up, down, left and right torsion are applied around the connecting parts of both the traveling door and the girder rail. The spherical bearing has a shaft connected and fixed to the girder rail, which can be operated vertically and horizontally within a constant solid angle, and at the same time, the shaft fulcrum to be held by the spherical bearing and the girder rail longitudinal direction. Move at an arbitrary intersection angle with respect to. In addition, the shaft connected and fixed to the gag rail makes a swinging motion. This movement absorbs the external force applied around the connection between the two traveling trolleys and the girder rail, and reduces internal stress by converting the movement into effective movement. As a result, the rollers held by both traveling trolleys can provide stable sliding.

In addition, the two spherical bearings function effectively by the same operation against misalignment that occurs in the manufacture of the girder rail. Thus, the rollers held by the traversing trolley, which traverses along the girder rail, also provide stable sliding.

As described above, the rollers held by both traveling trolleys and the rollers held by the traversing trolley always provide stable rolling. The ideal movement of the conveyed object can be realized by adding up and down movements at the same time as the movement and the movement to any position are smooth.

Next, we explain the operation of a simple crane that travels overhead on a curved traveling rail. A shift function is provided around the joint between the traveling rail and the girder rail against tension as a major external force due to changes in the intersection angle. Due to the action of the spherical bearing, the shaft fulcrum connected and fixed to the girder rail is moved to absorb and absorb external force. Also in this case, there is an inconsistency in the curved running rails, and the shaft fulcrum can be moved to an arbitrary angular direction within a constant solid angle with respect to tension as a main external force accompanying a change in the intersection angle. For this reason, stable rolling can be provided to the roller held by the traveling trolley.

Due to the spherical bearing mechanism of the two running doors, the rolling of the trolleys held by each trolley can be improved even under the situation where there are multiple inconsistencies such as running rails. A girder rail can be smoothly placed directly above the conveyed object when the conveyed object is separated from the floor surface by providing a shaft-connected shaft mechanism. C The reasons are as follows. In other words, following the transported goods by the traversing trolley is hardly a problem because the load of the transported goods is mainly involved. On the other hand, when the girder rail follows the conveyed object, the load of the crane gargoo, which is a steel structure, is applied, so a time delay is more likely to occur than when the traversing trolley follows the conveyed object. There is a tendency. At this point, if there is no spherical bearing mechanism and various internal forces occur around the connection between the two traveling trolleys and the girder-rail, the rollers in both traveling trolleys will roll smoothly. Otherwise, the tracking function itself is lost.

When the conveyed object is not directly below the girder rail, when the conveyed object is lifted diagonally by a hoist or the like, the girder rail is tilted about the shaft connected to the girder rail by its reaction force as a central axis. The horizontal component force to the oblique load generated by this inclination enhances the mechanism that makes the girder rail follow directly above the conveyed object.

The gag rail has a shaft, and the use of spherical bearings that hold the shaft makes it possible for the transported object, which is lifted by a hoist, to start moving and move with inertia. Even when stopping a conveyed object, the girder rail is securely tilted by the reaction force due to the pulling force or the pushing force. By the action of the horizontal component, the starting force due to the operator's operation is reduced. In addition, it is easy to move the conveyed goods to an arbitrary position.

The spherical bearing mechanism and the shaft mechanism connected to the girder rail can be formed as one unit, and can be used for both top-run and suspension-type evenings. Since the number of parts is small, it can be downsized and can be applied to existing overhead traveling cranes.

As described above, the shaft fulcrum connected and fixed to the girder rail can be moved by the shift mechanism provided on the one-side spherical bearing in the simple crane of the present invention. The first purpose is to absorb a major external force called tension caused by the generation of an intersection angle when the crane girder travels on a traveling rail having an inconsistency or a curved traveling rail. Conversely, by changing the range of the fulcrum movement dimension of the shaft, the intersection angle also changes. Here is a simple crane that runs overhead A shift-absorber unit (a shock absorber associated with the shift function) was introduced to further ensure the efficiency of the shift mechanism provided on the one-side spherical bearing. The operation of this shift-ab-two-unit will be described in detail in the description of the embodiment with reference to FIG.

Next, the operation of a small-scale simple crane that is attached to the on-site scaffold pipe will be described. Due to its structure, it largely depends on the scaffolding pipe of the mounting partner. The features of the present invention are that the running rail is basically a four-point support, and that an expandable and contractable brace supports and supports the running rail. Therefore, since it has an integral structure with the scaffold pipe, it is characterized in that when a load is applied to each part of the scaffold pipe, the axial force can be reduced and damage caused by the axial force can be suppressed. At the same time, it has the effect of suppressing the vibration and shaking that occurs at the time of lifting and lowering the conveyed material.

In addition, by providing a mechanism that allows the running rail to bend horizontally in the horizontal direction, the ceiling and eaves inside the building are unlikely to become obstacles when the running rail is folded and stored due to the finishing condition of the outer wall, etc. . The feature that the traveling rail is collapsible makes it easy to operate in terms of transporting, unloading, mounting and moving and assembling the simple crane body.

The superior features of the small simple crane attached and assembled to the scaffold pipe of the present invention, as compared to the transport means using a truck crane or the like, which has to lift the transported object outside the scaffold and temporarily place the transported object on the scaffold. Means that the goods can be drawn into the building. Vehicles, such as truck cranes, are subject to restrictions on the site due to space issues and unstable external ground conditions. In the simple crane of the present invention, since the main body is mounted and fixed on the scaffold, the working efficiency can be improved irrespective of the above-mentioned problems.

In the case of the small-sized simple crane to be mounted and assembled on the building body of the present invention, for example, even if the floor at the installation site has a height difference or the mounting body has a height difference, two The height difference can be adjusted by the action of the strut. Therefore, it is possible to perform setting while maintaining the balance of the running rail. In addition, the function of adjusting the length of the brace in accordance with the length of each strut can be used to reduce the load on the running rail. In addition, the running rail is folded into three parts Because it can be folded, it is easy to apply sufficiently even when there are restrictions on the internal depth of the installation location.

The columns, running rails, and bracelets expand and contract or fold, making them very compact when stored. Therefore, the loading and unloading of the simple crane body becomes extremely easy. C The fact that it is especially portable allows for extremely high mobility for this type of work, and the range of use is expanded. In addition, since the bolts are used, quick work is possible without using any tools during assembly and installation.

Since the main body of the simple crane of the present invention is mounted and fixed on the wall surface, there is no need for a support portion at the intermediate portion as in the conventional ladder type, which is effective in terms of effective use of space.

The basic operation of the small-scale simple crane according to the present invention, which is attached to the above-mentioned scaffold pipe or a building, will be described below. Since both of them have a method of mounting and assembling by manual operation, inconsistencies in the running rails etc. that occur during mounting without being aware, and inconsistencies in the running rails and the main body due to bending of the scaffold pipes on the site and the building 軀 body Generally increases. Even in this case, the traveling rollers are kept stable by the spherical bearings of both traveling trolleys, and a smooth traveling movement of the garg rail can be realized. Here, the description of the operation for absorbing the combined external force applied to the periphery of the connecting part between the traveling trolley and the girder rail generated due to the inconsistency of the traveling rails is the same as that for the above-mentioned overhead traveling simple crane, and therefore the description is omitted. I do.

When an oil-free bearing is used in the mechanism of the traverse trolley of the small-sized simple crane of the present invention, the movement in the traverse direction when a horizontal force is applied to the traverse trolley is smooth. However, the response becomes slow depending on the direction of the force.

By adopting this characteristic in the above-mentioned simple crane, there is no extreme skidding of the traversing trolley against the extreme difference in level difference between a pair of running rails among the running rails with misalignment, As a result, it is possible to realize a safe and smooth traveling movement without any large shaking of the conveyed goods. In addition, since the entire traversing trolley has a swinging function, the swinging movement of the shaft connected to the gag rail and the trolley body becomes possible. This means that when lifting the conveyed goods, Improve the function of the gag rail to follow the conveyed goods.At the same time, when the movement of the conveyed goods starts and stops, the operator's hand pushing and pulling forces cause the traversing mouth to move around the girder rail. It swings reliably, and is effective in reducing the manual operation force when the conveyed object travels due to the generation of a horizontal component against the oblique load of the conveyed object. Even in the small-sized simple crane of the present invention, the use of the spherical bearing mechanism provided with the two traveling openings and the oil-free bearing mechanism provided with the traversing trolley enables the safe lifting and lowering of the conveyed object. At the same time, the transported goods can be smoothly pulled into the building and moved. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a schematic plan view showing how a simple overhead traveling crane of the present invention travels on straight or curved traveling rails.

FIG. 2 is a schematic cross-sectional structural view showing the mechanism of the traveling trolley (A). FIG. 3 is a schematic cross-sectional structural view showing the mechanism of the traveling trolley (A) along the line AA ′ in FIG.

FIG. 4 is a schematic cross-sectional structural view showing the mechanism of the traveling trolley (B). FIG. 5 is a schematic cross-sectional structural view showing the mechanism of the traveling trolley (B) along the line AA ′ in FIG.

Fig. 6 is a schematic cross-sectional structure diagram of the periphery of the shift sorber unit. Fig. 7 is a schematic cross-sectional structure diagram of a suspension type overhead traveling crane.

FIG. 8 is a schematic cross-sectional structural view of a suspension-type simple crane having an overhang and traveling overhead.

Fig. 9 is a schematic cross-sectional structural diagram of a simple Toblan-type overhead traveling crane. Fig. 10 is a schematic diagram showing a round trolley with a hoist suspended from a circular pipe girder rail. FIG.

Fig. 11 is a schematic front view of a small-scale simple crane assembled and attached to the on-site scaffolding pipe. Fig. 12 is a schematic elevation view of a small-scale simple crane assembled and attached to the on-site scaffolding pipe.

Fig. 13 is a schematic plan view of a small-scale simple crane assembled and attached to the on-site scaffolding pipe.

Fig. 14 shows the traveling level of a small simple crane assembled and mounted on the on-site scaffolding pipe.

It is a schematic plan view which shows the bending situation of a-rule.

FIG. 15 is a schematic sectional structural view taken along line AA ′ of FIG.

FIG. 16 is a schematic front view of a small-scale simple crane installed and assembled in a building.

FIG. I7 is a schematic elevation view of a small-scale simple crane installed and assembled in a building.

FIG. 18 is a schematic elevation view of the main body frame after disassembling and folding the small-scale simple crane installed and assembled on the building body. BEST MODE FOR CARRYING OUT THE INVENTION

(Example 1)

The overhead traveling simple crane of the present invention will be described. FIG. 1 is a schematic plan view showing how a simple crane traveling on a ceiling according to the present invention travels on straight or curved traveling rails. In FIG. 1, 1a is a straight traveling rail, 1b is a curved traveling rail, 4 is a gutter rail, 7 is a traveling trolley (A), 8 is a traveling trolley (B), 9 is a traversing trolley, 4 7 Indicates an obstacle. As shown in FIG. 1, the girder rails 4 held by the traveling trolleys (A) 7 and (B) 8 on the linear traveling rail 1 a and the curved traveling rail 1 b installed substantially in parallel. Travel and move. Along trolley 4, traversing trolley 9 traverses. In this case, there is an obstacle 47 such as a machine or equipment in a factory or the like, and in order to avoid the obstacle 47, a combination of the straight running rail 1a and the curved running rail 1b of the running rail is used. I have.

FIG. 2 is a schematic cross-sectional structural view showing the mechanism of the traveling trolley (A). FIG. 3 is a schematic cross-sectional structural view showing the mechanism of the traveling trolley (A) along the line AA ′ in FIG. In Figs. 2 and 3, 1 is the running rail, and 4 is Girder rails, 5 is a shaft (A), 7 is a runway (A), 10 is a spherical bearing (A), 13 is a runner roller, 21 is a shaft mounting plate, and 2 is a shaft. Mounting plate fixing bolts, 23 is a shaft retaining bracket, 24 is a shaft retaining bracket fixing bolt, 25 is a roller-one support bracket, and 26 is a spherical bearing housing (A). The spherical bearing (A) 1 Q, the spherical bearing housing (A) 26, the traveling roller 13 and the roller-supporting bracket 25 make up a running part (A) 7 Is configured. The shaft (A) 5 connected to the gag rail 4 is held by the spherical bearing (A) 10 provided in the traveling trolley (A) 7.

FIG. 4 is a schematic cross-sectional structural view showing the mechanism of the traveling trolley (B). FIG. 5 is a schematic cross-sectional structure diagram showing the mechanism of the traveling trolley (B) along the line AA ′ in FIG. 4 and 5, 1 is a running rail, 4 is a girder rail, 6 is a shaft (B), 8 is a running trolley (B), 11 is a spherical bearing (B), and 13 is a running port. Reference numeral 21 denotes a shaft mounting plate, reference numeral 22 denotes a shaft mounting plate fixing bolt, reference numeral 25 denotes a roller-supporting bracket, reference numeral 27 denotes a spherical bearing housing (B), and reference numeral 33 denotes a shaft head. Spherical bearing as a fulcrum (B) 1 1 and spherical bearing housing

A traveling trolley (B) 8 is constituted by an assembly of four parts: (B) 27, traveling rollers 13, and roller-support bracket 25. It is characterized in that it has a spherical shaft head 33 connected to the girder rail 4. The shaft (B) 6 is held by a spherical bearing (B) 11 provided in the traveling trolley (B) 8.

FIG. 6 is a schematic cross-sectional structural view of the periphery of the shift absorber unit. In Fig. 6, 1 is a running rail, 4 is a gutter rail, 5 is a shaft (A), 10 is a spherical bearing (A), 13 is a running roller, 14 is a guide roller, 21 1 is a shaft mounting plate, 22 is a bolt for fixing the shaft mounting plate, 25 is a roller support bracket, 26 is a spherical bearing housing (A), 28 is a shift absolute unit housing, 30 a, 3 Ob are coil springs, 31 is a coil spring mounting plate (A), 32 is a coil spring mounting plate (B), 33 is a shaft head, 34 is a slide bottom plate, 35 is a linear bearing, and 37 is a linear bearing. A fixed bolt, 38 indicates a rubber buffer, and 40 indicates an air hole. The shift sorber unit 12 is a spherical bearing housing that holds the spherical bearing (A) 10 A coil spring 30a is interposed between the side surface of the jing (A) 26 and the shaft head 33 connected and fixed to the extended shaft (A) 5. Direct expansion and contraction of the coil spring 30a, movement that does not change the volume of the housing area of the coil spring 30a, and movement of the front part of the housing area of the coil spring 30a (the spherical bearing housing (A) 26) after the movement The function of the shift absolute unit 12 is realized by the expansion and contraction of the coil spring 30a after hitting the side surface.

The applicable specifications of the mechanism of the shift absolute burnit 12 and 12 are the shift set value of the shaft (A) 5 connected to the girder rail 4 and the divided area in the shift absolute unit housing 2 8 It varies depending on the distribution and the specifications of the coil spring 30a. For this reason, the operation form of the girder-rail 4 body also changes. This mechanism is mounted on the side surface of the spherical bearing (A) 10 and both are configured as unity.

Here, the detailed configuration and operation of the shifter unit 12 will be described. A shaft (A) 5 having an extension length determined by the girder rail 4 is connected and fixed. The shaft (A) 5 is held by the spherical bearing (A) 10. A spheroidal shaft head 33 is bolted to the end of the shaft (A) 5. A slide bottom plate 34 that wraps around the shaft head 33 and is set so that it cannot be removed is installed.

One side of the coil spring 30a is fixed to a slide bottom plate 34, and the other side is fixed to a coil spring mounting plate (A) 31. The assembly of the coil spring 30 a, the slide bottom plate 34, and the coil spring mounting plate (A) 31 has a telescopic function and a slide function as its own. It is a major component of There is a gap between the shaft head 33 and the slide bottom plate 34 to accommodate the spherical motion of the shaft 33 at a constant solid angle. It appears in a FIG. 6, 1 _2, 1 3, 1 4, 1 5, 1 _6, showing the area dimensions. For the sake of explanation, the description expression (1, area)… ( ₁₆ areas) is used, but it means the space below each area.

The internal mechanism of the shift absorb unit housing 28 will be described. (1 ₃ Area) to (1 ₆ areas) is provided with a linear bearing 35 having a reciprocating and rotational movement functions. Shift Absorber Unit Housing 28 is a ball The surface bearing (A) 〖0 is attached and fixed to the roller support bracket 25 of the traveling roller 〖3 by fastening together.

In operation, taking into account the shift set amount of the above-mentioned shafts bets (A) 5, can be set (by area), (1 ₃ Area), a (1 ₅ areas), respectively. Furthermore, in accordance with the radius of curvature of the status of the curved running rail 1 b, (1, Eria), (1 ₃ Weria), also possible to determine each (1 ₅ areas).

For example, it is assumed that a pair of straight running rails 1a has a bad street, and that there is an error of 15 image positions on the left and right with respect to a reference line of the pair of straight running rails 1a. Normally, the gauge rail 4 that travels on the mismatched portion of the traveling rail 1a generates external forces such as tension and compression mainly around the connection between the traveling trolleys (A) 7 and (B) 8. . In contrast, looking at the little safety factor, if (and Eria) dimensions 3 O mm, (1 ₃ E Ria dimension) of 2 O mm, if you set 2 0 mm (the 1 ₅ Eria dimension), as long as the angle of intersection than necessary between the running rail 1 a and moths one Dale Ichiru 4 does not occur, reciprocate between shift absolute one Bayuni' sheet 1 2 (1 ₃ areas) of (1 ₅ area) The coil spring 30a has no effect.

However, the above-mentioned misalignment of the straight running rail 1a overlaps with an eccentric load due to an artificial operation, and an unnecessary crossing angle between the straight running rail 1a and the girder rail 4 is generated. However, this occurs when the amount of shift of the shaft (A) 5 is about to exceed 20 or when the girder rail 4 travels on the curved traveling rail 1 b separately from the above. As the crossing angle, if the external force is applied due to a large tensile to support the fulcrum of the girder one rail 4, the entire shift fab saw bar Interview Stevenage Bok 1 2 is moved to (1 ₃ areas). Coil spring mounting plate (A) 3 1 is a spherical bearing housing (A)

2 At the same time as hitting the rubber buffer 3 8 attached to 6, the shaft 3 3 force moves together with the slide bottom plate 3 4 in the (1 ₃ area) direction and the coil spring

30a is compressed steplessly. Due to the reaction of the coil spring 30a caused by this compression, the slide bottom plate 34 is strong and is integrated with the shaft head 33. As a result, the shaft (A) 5 is returned in the ( ₁₅ area) direction. Action occurs. In other words, when an intersection angle more than necessary occurs, the action of returning the girder rail 4 to the original intersection angle occurs by the compression of the coil panel 30a. Specifically, one side of the traveling toro Lee (A) 7 or (B) 8 has a large artificial operation force, so even if an excessive crossing angle occurs, one of the driving doors (A) 7 义 is (B) 8 The follower function works efficiently, and it is possible to maintain a stable state of the traveling roller 13 without applying an impact or external force to the traveling port 13.

Next, the shift amount set value of the ( ₁₅ area) that was initially set by the application of the compression force to the connection between the two running wheels (A) 7, (B) 8 and the girder rail 4 When crossing, the entire shiftover unit 12 moves in the ( ₁₆ area) direction. The slide bottom plate 34 is pressed by the shaft head 33 and hits the rubber buffer 38 on which the coil spring mounting plate (B) 32 is mounted. At the same time, the coil spring 3 Ob installed at the end of the shift absolute housing 28 is compressed steplessly: The coil spring 3 Ob absorbs the shock caused by the compression. Further, stretching the stroke of the shift fab saw bar Interview Stevenage sheet 1 second coil spring 3 0 a, from the beginning (1 ₃ area), can also be set to zero the gap dimensions (1 ₅ areas). This means that the area of the coil spring 30a becomes large. Such a situation occurs when there is an inconsistency in the straight traveling rail 1a or the like, and when the girder rail 4 travels on the curved traveling rail 1b. As the fulcrum of the shaft (A) 5 connected to the guide rail 4 moves, the coil springs 30a and 30b act at the start of the movement. This not only enhances the tracking function of both traveling trolleys (A) 7 and (B) 8, but also increases the external force applied around the connection between traveling trolley (A) 7, traveling trolley (B) 8 and girder rail 4. Means that it can be absorbed by the action of the coil spring 30a from the beginning. In this case, the coil spring 30a to be used is preferably of a two-stage motion type.

As described above, in the overhead traveling traveling simple crane according to the present invention, when the span of the linear traveling rail 1a is large and an undesired intersection angle occurs, or when the girder rail 4 extends on the curved traveling rail 1b. When the vehicle travels, by using the mechanisms of the spherical bearings (A) 10 and (B) 11 and the mechanism of the Shift Absorber Unit 12 at the same time, the crossing angle becomes larger than necessary. It can provide ideal transport of goods while absorbing shock.

FIG. 7 shows the two-wheel drive (A) 7 and (B) 8 of the present invention, and the shift-absorber. —A schematic cross-sectional structural diagram of a suspension-type overhead traveling crane equipped with Unit 2 is shown in FIG. 7: In FIG. 7, la is a straight traveling rail, 4 is a gardale rail, and 5 is a shaft ( A), 10 is a spherical bearing (A), 11 is a spherical bearing (B), 12 is a shift absolute bar unit, 13 is a traveling roller, 14 is a guide port, and 15 is a traverse. Rollers 1 and 16 are hoists and chain blocks, 17 is a hoist mounting bracket, 19 is a traveling rail suspension member, 20 is a suspension member fixing bracket, 25 is a roller one support bracket, and 16 is a spherical surface. Bearing housing (A), 27 is a spherical bearing housing (B), 41 is a ceiling plate, 42 is a ceiling suspension member, 44 is a kip tire cable, 45 is a beam, and 49 is a traverse stopper. The straight running rail 1a is supported and fixed to the beam 45, which is the structure constructed on the ceiling surface of the building, by the running rail suspension member 19. c In the case of Fig. 7, both running trolleys (A) 7 , (B) 8 provided spherical bearings (A) 10, (B) 11 The shafts (A) 5, (B) 6 held by 11 are connected and fixed to both side surfaces of girder rail 4 . A trolley 9 (including a traversing roller 15, a roller-one support bracket 25, and a hoist-mounting bracket 17) in which a hoist 16 is suspended moves along the gag rail 4. When the shift trolley unit 12 is mounted on the traveling trolley (A) 7, both traveling trolleys (A) 7, (B) 8 have guide rollers 14 on the top of the traveling rollers 13. Prepare. By mounting the two traveling trolleys (A) 7, (B) 8 and the shift absolute bar unit 12, the straight traveling rail 1a hardly sways, so the straight traveling rail 1a is attached to the ceiling panel. It becomes possible to attach.

Fig. 8 shows a schematic cross section of a suspension type overhead traveling crane with an overhung equipped with both runners (A) 7 and (B) 8 and a shifter unit 12. FIG.

FIG. 9 is a schematic cross-sectional structural diagram of a top-run overhead traveling simple crane equipped with both traveling trolleys (A) 7 and (B) 8 and a shift absolute bar unit 12.

In Figs. 8 and 9, 1 is a running rail, la is a straight running rail, 4 is a girder rail, 5 is a shaft (A), 6 is a shaft (B), and 8 is a running shaft (B). , 10 is a spherical bearing (A), 11 is a spherical bearing (B), and 12 is a shift absorber Unit, 13 is a traveling roller, 14 is a guide roller, 15 is a traversing roller, 16 is a hoist and chain block, 17 is a hoist mounting bracket, 18 is a hook, and 19 is a hanging rail. Lowering member, 21 is a shaft mounting plate, 25 is a roller support, 26 is a spherical bearing housing (A), 27 is a spherical bearing housing (B), 43 is an anchor bolt, and 4 is Figure 8 shows a cap tire cable, 45 is a beam, 46 is a column, and 49 is a traverse stopper. In the case of Fig. 8, the spherical bearings (A) 1 of both traveling trolleys (A) 7, (B) 8 The shafts (A) 5 and (B) 6 held by 0 and (B) 11 are connected and fixed to the upper part of the guide rail 4. In the case of Fig. 9, the columns 46 and beams 45 can be composed of general steel H-section steel and square pipes, and the columns 46 and beams 45 are formed by the suspended load of the beams 16 applied to the ga-g rail 4. It can be changed freely. Also, as a method of fixing the columns 46, the anchors 43 are used to fix the concrete to the slab.

FIG. 10 is a schematic cross-sectional structure diagram showing a state in which a hoist is hung on a traversing trolley using a round type girder rail. In FIG. 10, reference numeral 4 denotes a garg / rail, 9 denotes a traversing trolley, 16 denotes a hoist and a chain block, 17 denotes a mounting bracket, 18 denotes a hook, and 50 denotes an oilless bearing. The non-lubricated bearing 50 held by the traversing opening 9 gives the oscillating movement function to the traversing opening 9 by wrapping around the girder rail 4.

(Example 2)

An embodiment in which a small-scale simple crane is assembled and attached to a scaffold pipe on site will be described in detail. Figures 11, 12, and 13 show a schematic front view, a schematic three-dimensional view, and a schematic plan view of a small-scale simple crane assembled and mounted on a scaffold pipe at the site.

In Figs. 11 to 13, 2 and 2c2d are traveling rails, 4 is a girder rail, 7 is a traveling trolley (A), 8 is a traveling trolley (B), 9 is a transverse trolley, 1 3 is a traveling roller, 16 is a hoist and chain block, 18 is a hook, 4 4 is a cap tire cable, 48 is a traveling stopper, 49 is a traverse stopper, 50 is a non-lubricated bearing, and 10 2 is a lubricated bearing. Brace (IN), 103 is a brace (OUT), 108 is a scaffold pipe, 109 is a running rail support pipe, 110 is a rail joint hinge A, and 1 16 is a brace bracket (Rail side), 1 1 9 is a brace fixing bracket (for scaffolding pipe), 1 20 is the bracket for adjusting the tightening of the nipple, 1 17 is the rail bracket, 1 is the bracket for the rail support, 1 28 is the bracket for the running rail, 〖30 is the conveyed product, 1 31 is the safety railing: running rail 2 is the running rail respectively It is divided into 2c and 2d parts. The traveling rails 2c and 2d are fixed to the scaffold pipe 108 via the traveling rail support pipe 109 using the traveling rail fixing bracket 〖28. The traveling rail support pipe 109 is used for adapting to the difference in scaffold dimensions of the scaffold pipe 108 and for reinforcing the traveling rail 2. The traveling rail 2c2d is indirectly supported at four fulcrums using four fixing brackets 128.

The length of the brace (IN) 102 and the brace (OUT) 103 can be adjusted steplessly with the clamps 120, so that the running rail 2c, Can be mounted on 2 d. At this time, taking into account that the brace itself bears the load applied to the traveling rail 2c2d, the mounting angle of the brace (IN) 102 and the brace (OUT) 103 is It is necessary to select a mounting location for the scaffold. Considering the load sharing and the reduction of the axial force applied to the scaffold pipe 108, about 45 ° is an average appropriate value for the mounting angle. The brace (IN) 102 and the brace (OUT) 103 support the pair of running rails 2c and 2d in a four-piece configuration. In a small-scale simple crane assembled and mounted on the on-site scaffold pipe 108, the girder held on traveling trolleys (A) 7, (B) 8 along traveling rails 2c, 2d is replaced by rail 4 Travel and move. In this case, the traveling trolleys (A) 7 and (B) 8 are provided with spherical bearings (A) i 0 and (B) 11, respectively. The gag rail 4 can safely and smoothly move even if the running rails 2c and 2d are misaligned when the scaffold pipes are not vertical or when the scaffold pipes are not vertical. Become.

The trolley 9 with the hoist and chain block 16 suspended along the girder rail 4 traverses. In the case of the second embodiment of the present invention, the span between the pair of traveling rails 2c, 2d is narrow, and there is little need for traversing. There is an inconsistency between the running rails 2c and 2d, and there is a skid like the trolley 9 holding the traversing rollers 15, especially when there is a level difference between the running rails 2c and 2d. Therefore, large swaying of the conveyed object may occur. For this reason, oil-free bearings 50 A trolley 9 was adopted.

Fig. 14 is a schematic plan view showing the bending condition of the traveling rail of a small-scale simple crane assembled and attached to the on-site scaffolding pipe. FIG. 15 is a schematic sectional structural view taken along line AA ′ of FIG. In Figs. 14 and 15, 2c and 2d are running rails, 4 is a girder rail, 6 is a shaft (B), 21 is a shaft mounting plate,

2 5 is a roller support bracket, 7 is a spherical bearing housing (B), 110 is a rail joint hinge A, 111 is a rail joint hinge B, 112 is a rail joint hinge pin A, and 115 is a rail joint 4 shows a hinge insert / extract pin. The traveling rail 2d is connected to the traveling rail 2c by using a rail joint hinge A110 and a rail joint hinge B111. Pulling out the rail joint hinge insertion / removal pin 1 15 and rotating it around the rail joint hinge A 110, the traveling rail 2d can be folded over the traveling rail 2c to perform the bending operation of the traveling rail. it can.

(Example 3)

An embodiment in which the small-sized simple crane of the present invention is assembled and mounted on a building body will be described in detail. Fig. 16 and Fig. 17 show a schematic front view and a schematic elevation view of a small-scale simple crane installed and assembled in a building. In Figs. 16 and 17, 3 e,

3 f and 3 g are traveling rails, 4 is a girder rail, 7 is a traveling trolley (A), 8 is a traveling trolley (B), 9 is a traversing trolley, 10 is a spherical bearing (A), 13 is a runway line, 16 is a hoist and chain block, 18 is a hook, 44 is a captive cable, 48 is a run stopper, 49 is a transverse stopper, 50 is a non-lubricated bearing, 1 0 0 is a pole (IN), 101 is a pole (OUT), 102 is a pole (IN),

103 is a brace (OUT), 104 is a column fixed frame, 105 is a rail steady bar, 106 is a crossbar (top), 107 is a crossbar (bottom), 1 1 1 is a rail joint hinge B, 1 1 4 is a rail joint lock pin, 1 1 6 is a brace holder (rail side), 1 1 7 is a brace holder (post side), and 1 2 0 is a niche tightening adjustment fixing bracket , 1 2 1 is a holding plate, 1 2 2 is a rail fixing bar fixing bracket, 1 2 3 is a column fixing bolt (upper) (lower), 1 2 4 is a tightening bolt for positioning the column (large), 1 2 5 is Only for the support column positioning, tightening bolts (small), 1 26 are cross bar receiving brackets, 1 29 denotes a leveling rubber pad. A pair of struts (IN) 100 and struts (0 UT) 100 I are each a strut (IN) 100 in a strut (OUT) 101. Has a configuration to enter. Adjust the level difference between the pair of shorings according to the situation of the installation location, and fix it using the bolts (large) 124 for positioning the poles. Also, the brace (IN) 102, The cane (OUT) 103 has a telescopic mechanism that can be adjusted in a stepless manner by using a tightening adjustment fixing bracket 120 according to the length of a pair of columns, and a pair of traveling rails 3 e , 3 f, 3 g are supported by a combination of a pair of brace (IN) 102 and a brace (OUT) 103.

A pair of struts (IN) 100 and struts (OUT) 101 are erected along the building body (the shaded area in Fig. 17), and four of the strut fixing frames 104 are erected. Support bolts (upper) (lower) Attached to the tip of 1 2 3. The wall (1) and the support (OUT) 1 0 3 are fastened and fixed together by one holding plate 1 2 1. The column fixing bolts in the column 104 (upper) (lower) The holding plate 1 2 1 attached to the tip of 123 has a structure that rotates 360 °, so any wall shape You can select the mounting angle to fit in. In addition, according to the strength of the wall, the holding plate 1 2 1 can be changed to a large holding plate 1 2 1, and the column fixing bolts (upper) (lower) 1 2 3 can be adjusted according to the change in wall thickness And take action.

By mounting the leveling rubber pad 129/9 at the lower part of the column (OUT) 101, fine adjustment of the level difference between columns and stability of the whole simple crane can be achieved. The transfer bar (top) 106 and the transfer bar (bottom) 107 are means for determining the span (frontage) between the two columns, and are one of the support frames for the column (OUT) 101. It also has the effect of increasing the strength of the strut (OUT) 101. The rail steady rest bar 105 can be attached to and detached from the inner side surface of the traveling rail 3 g, and serves to stop the run-out between the rails.

Fig. 18 is a schematic elevation view of the main frame after disassembling and folding the small-scale simple crane installed and assembled in the building shown in Figs. 16 and 17. is there. In FIG. 18, 3 e, 3 f, and 3 g are running rails, 100 is a strut (IN), 101 is a strut (OUT), 102 is a brace (IN), and 103 is a strut. A brace (OU T), 104 indicates a column fixing frame, and 129 indicates a leveling rubber pad. First From Fig. 8, it can be seen that the body frame is housed in a compact, easy-to-carry storage style. As a procedure for folding the body frame, first, on the inside of the building, remove the hoist and chain block 16 suspended from the trolley 19 and remove a set of travel stoppers 48. Next, both traveling trolleys (A) 7,

(B) Pull out the girder rail 4 connected to 8 from the end face of the traveling rail 3 g. Remove the rail steady rest bar 105, the transition bar (top) 106, and the transition bar (bottom) 107, respectively. Remove the brace (IN) 102 from the brace bracket (support side) 1 17. Next, remove the rail joint lock pin 114 attached between the running rails 3e and 3f, and move the running rails 3e and 3f around the rail joint hinge pin (B) 113, respectively. Fold it down. Tightening bolt only for column positioning

(Large) 124, Loosening bolt for positioning column (small) 1 25, loosen column (IN) 100 into column (OUT) 101, and tighten bolt for positioning column (small) 1 Using 25, fix the columns (IN) 100 and (OUT) 101 respectively. At that time, the running rails 3e, 3f, 3g and the stave (IN) 102, the stave

(OUT) 103 is a column without removing it from the column (IN) 100.

(OUT) 101 can be stored around. Loosen the column fixing bolts 1 2 3 and remove the column fixing frame 104. Loosen the nipple tightening adjustment fixing bracket i20 and store the stick (IN) 102 in the stick (OUT). By the above procedure, as shown in Fig. 18, the folded main body frame can be stored.

The running rail 3 is divided into 3e, 3f, and 3g portions, respectively, and the running rail 3f and the running rail 3g are connected by a rail joint hinge B111. If there are restrictions on the internal space, etc., the rail joint lock pin 1 14 can be removed and the traveling rail 3 g can be bent downward. The brace (OUT) 103 supported at the end of the running rail 3 g is attached to the rail joint hinge B 111 at the end of the running rail 3 f.

The girder rail 4 travels along traveling rails 3 e, 3 f, and 3 g. In the embodiment in which the span between the pair of traveling rails 3 e, 3 f, and 3 g is extremely narrow, there is little need for traversing, so the traversing trolley 9 should be lubricated with oil-free bearings 5 so that it can move in a limited range. 0 was attached. Industrial applicability

ADVANTAGE OF THE INVENTION According to the simple crane which travels over the ceiling of this invention, it has a spherical bearing in both the runway opening and the girder rail connection mechanism part, holds the shaft connected to the girder rail, and uses the coil spring. The combined use of the Absorber Unit has the advantage that the traveling rails held by the traveling rails and the traveling portals are not subjected to impact or vibration. Therefore, there is an advantage that the movement of the conveyed object to any position by manual operation, including lifting and hanging movement of the conveyed object by the hoist and the chain block, can be performed smoothly and safely. Furthermore, there is an advantage that handling is easy and safe even when starting and stopping moving.

The safety and operability of human operation are improved, and ideal three-dimensional movement of the conveyed goods is possible:

It can be applied to simple cranes that can make effective use of the space in factories and offices.

The present invention can be applied to a simple crane that can safely and smoothly move a conveyed material to an arbitrary position.

The present invention can be applied to a simple crane that can be folded, expanded, contracted, and transported, and can easily move a conveyed material to an arbitrary position.

According to the small-sized simple crane as a practical development example of the simple crane according to the present invention, even a person who is not familiar with the operation can easily install the simple crane, and is excellent in portability, etc. Some are highly effective

Claims

The scope of the claims

1. A girder rail that intersects with the traveling rail at a substantially right angle is held by both traveling trolleys, travels along the traveling rail, and the traversing trolley mounted on the traveling rail is a hoist and a chain. In a simple overhead traveling crane that suspends a block and traverses along the girder rail,

In the holding mechanism of the connecting portion between the two running doors and the girder rail, (a) the garg rail has a shaft fixed and connected,

(Mouth) One spherical bearing held by the two traveling trolleys has a bearing function within a constant solid angle within a hemispherical locus, and the other spherical bearing has a constant spherical shape within a hemispherical locus. A simple crane featuring a bearing function within a solid angle range and a shift function at a constant solid angle.

2. One side of the traveling trolley is a coil panel between a spherical bearing mechanism with a shift function to hold it and a shaft head attached to the tip of the shaft connected and fixed to the girder rail. And a shifter unit that alleviates and absorbs shift movement of the spherical bearing on the shaft by expansion and contraction of the coil panel. Simple crane.

3. A girder rail that intersects the traveling rail at a substantially right angle is held by both traveling trolleys, travels along the traveling rail, and the traversing trolley mounted on the garg rail comprises a hoist and In a simple crane that hangs a chain block and traverses along the girder rail,

In the holding mechanism of a connecting portion between the traveling trolley and the girder rail, (a) the girder rail has a shaft fixed and connected,

(Mouth) One spherical bearing held by the two traveling trolleys has a bearing function within the range of a constant solid angle in a hemispherical locus, and the other spherical bearing has a spherical solid bearing in a hemispherical locus. Equipped with a bearing function within the range of a constant solid angle and a shift function at a constant solid angle,

One side of the drive shaft is provided with a coil spring between a spherical bearing mechanism having a shift function for holding and a shaft head attached to the tip of the shaft fixedly connected to the guide rail. Arranged, by the expansion and contraction of the coil panel, the spherical bearing A shift-absorber unit for relaxing and absorbing the shift movement on the shaft,

Further, in the case of mounting on a building, the traveling rail is a foldable traveling rail, and has a support with a telescopic adjustment mechanism and a cane with a telescopic adjustment mechanism.

4. A girder rail that intersects the traveling rail at a right angle is held by both traveling entrances, travels along the traveling rail, and the traversing trolley mounted on the girder rail is a hoist. And a simple crane that hangs the chain block and traverses along the girder rail,

In the holding mechanism of the traveling trolley and the girder rail connecting portion, (a) the garg rail has a shaft fixed and connected,

(Mouth) One of the spherical bearings held by the two running ports has a bearing function within a constant solid angle within a hemispherical locus, and the other spherical bearing has a spherical function within a hemispherical locus. With a bearing function within the range of a constant solid angle and a shift function at a constant solid angle,

One of the running ports is provided with a coil panel between a spherical bearing mechanism having a shift function for holding and a shaft head attached to a tip of the shaft fixedly connected to the girder rail. A shift-absorber unit for relaxing and absorbing a shift movement of the spherical bearing on the shaft by expansion and contraction of the coil panel;

The traveling rail is a folding traveling rail,

Further, in the case of mounting on a scaffold, a simple crane characterized by having a scaffold pipe and a cane with an expansion / contraction adjustment mechanism, which are part of the attached structure.

5. The simple crane according to any one of claims 1 to 4, wherein the traveling rails are traveling rails having different radii of curvature.