JPH088882Y2 - Mobile ballast for equipment - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention is attached to the leg or bottom of various equipment such as a press machine to facilitate movement, vibration isolation and stability of the equipment, and The present invention relates to an improvement of a mobile ballast for equipment whose level can be adjusted.

(Prior Art) Conventionally, a moving wheel for moving a device, and a vibration isolator for stably installing the moved device and for damping the vibration of the device itself or the vibration from the outside are provided. The above-mentioned mobile ballast for equipment is already known, for example, from Japanese Patent Publication No. 47-27661 and Japanese Utility Model Publication No. 48-13566 related to the invention and invention of the present inventor. FIG. 8 is a sectional view showing a conventional example of the above-mentioned Japanese Utility Model Publication No. 48-13566. 1
Is a mounting nut fixed to the leg or bottom of the device, and a screw hole 2 into which a mounting bolt (not shown) is screwed is provided at the center thereof. Reference numeral 3 denotes a ring-shaped handle for moving the vibration isolator 4 such as rigid rubber or synthetic resin up and down. Reference numeral 5 is a frame rotatably mounted on the mounting nut 1 via a thrust cover, which will be described later, and 6 is a single moving wheel.

An annular groove 7 is formed inside the mounting nut 1, and the annular groove 7 accommodates the upper end of a thrust cover 10 that is rotatably sandwiched by steel balls 8 and 9. The thrust cover 10 and the steel balls 8 and 9 are supported by a thrust washer 11 fixed to the mounting nut 1. The lower end of the thrust cover 10 spreads like a brim and is welded to the upper end of the frame 5. The handle 3 arranged outside the thrust cover 10 is supported by the bottom surface of the handle 3 resting on the flange-shaped lower end of the thrust cover 10. A gear portion 12 is provided on the inner peripheral surface of the handle 3. The frame 5 has a cylindrical portion 13 into which the vibration isolator 4 is fitted, and a parallel portion 15 to which the moving wheel 6 is attached by a shaft 14.

A gear stopper 16 is fitted on the upper portion of the frame 5, and a hole is provided in the gear stopper at a position eccentric from the center 17 of the frame 5, and an adjusting bolt 18 is arranged through the hole. A pinion gear 19 is fixed to the upper portion of the adjust bolt 18 so as to rotate integrally, and a part of the pinion gear 19 meshes with the gear portion 12 of the handle 3 through the window portion of the thrust cover 10. Above the pinion gear 19, there is a gear thrust.
20 are provided. The vibration isolator 4 is formed so as to be fitted to the inner wall of the cylindrical portion 13 of the frame 5, and is attached by an adjusting nut 21 screwed to an adjusting bolt 18.

Three or more of the above-mentioned equipment movement stabilizers are attached to the legs or bottom of the equipment. In the state shown in FIG. 8, the single moving wheel 6 is in contact with the floor surface G.
When the device pushes in the desired direction, the moving wheels 6 roll and can be moved in the desired direction. When changing the moving direction, if the pushing direction of the device is changed, the resistance against the flat floor surface G of the moving wheel 6 acts on the frame 5 and the thrust cover 10, and the thrust cover 10 causes the steel ball 8,
Since it rotates between 9, the directions of the frame 5 and the moving wheels 6 can be changed to the moving direction.

When the device is installed at a desired position, the frame 5 is pressed so as not to rotate and the handle 3 is rotated in a predetermined direction. When the adjusting bolt 18 is rotated through the pinion gear 19 by the rotation of the handle 3, the vibration isolator 4 and the adjusting nut 21 are stopped by the frame 5 and thus descend along the adjusting bolt 18.
Even after the lower end surface of the vibration isolator 4 contacts the floor surface G, the vibration isolator 4
When is lowered, the moving wheels 6 are lifted away from the floor surface G.

As described above, according to the conventional example shown in FIG. 8, the wheel 3 for moving is moved to the floor surface G by rotating the handle 3.
Further, it is made to float further, and at the same time, the vibration isolator 4 for supporting the equipment is interposed between the equipment and the floor surface G.

(Problems to be Solved by the Invention) In the above-mentioned conventional example, the adjust bolt 18 is arranged at a position eccentric from the center 17 of the frame 5 in one direction, and
By arranging the shaft 14 of the single moving wheel 6 at a position eccentric in the opposite direction, the size is reduced, but the moving wheel 6 has a large outer diameter in order to lightly move the equipment. I wanted to do it. For that purpose, the position of the shaft 14 is moved away from the center 17 of the frame 5, so that the outer diameter of the moving wheel 6 cannot be increased and the movement of the device cannot be lightened. In addition, since the moving wheel 6 is single, if there is an obstacle such as a protrusion or a depression on the floor surface, the directionality of the equipment movement becomes unstable, and the weight of the movement causes the course to meander. Making equipment movement more difficult.

The present invention has been made to solve the above problems,
The purpose is to increase the degree of freedom in designing the axle position and outer diameter of the moving wheel, and to improve the steering performance of the moving ballast itself without the moving wheel being affected by changes in the floor surface. An object is to provide a device movement stabilizer having improved directivity, directionality and strength.

(Means for Solving the Problems) The gist of the present invention is to provide a fixing member attached to a leg portion or a bottom portion of a device, a frame rotatably attached to the fixing member, and a rotation member around the fixing member. An adjusting bolt attached, an adjusting nut screwed to the adjusting bolt, a vibration isolator fixed to the adjusting nut so as to be non-rotatable and vertically movable, and the adjusting bolt. In a movement stabilizer for equipment comprising a handle member for transmitting a rotational force to a frame and a moving wheel supported by the frame, the frame eccentric in a traveling direction from a center of the fixing member and a load center formed by an adjusting bolt. Through the axle in the width direction of the vehicle, and two moving wheels are attached to both sides of the axle, and the axle is slidably supported on the frame. A loose fitting portion is formed so as to gradually increase in diameter from the sliding contact support portion to the mounting portion side of the two moving wheels to provide an appropriate gap with the axle, or the axle is in sliding contact with the frame. On the floor surface received by the moving wheels, a loose fitting portion is formed to gradually reduce the diameter from the sliding contact portion to the mounting portion of the two moving wheels to provide an appropriate gap with the frame. In accordance with a change in the above condition, the axle is formed so as to be capable of swinging at an appropriate angle through a gap with the frame, and thus it is a movement stabilizer for equipment.

(Function) When three or more mobile stabilizers for equipment are attached to the legs or bottom of the equipment and one of them is moved to a predetermined installation location in the factory, one of them is on the floor. Encounter obstacles such as protrusions or depressions of the and overcome those obstacles. At this time, one of the two moving wheels of the device movement stabilizer is on the obstacle and is swung about the midpoint of the axle that is directed straight in the traveling direction. Even if the equipment is moved in this state, a slight change on the floor is not directly transmitted to the movement stabilizer itself but is absorbed by only one wheel, which causes an obstacle to the maneuverability and directivity of the movement stabilizer itself. The device can be moved to a predetermined place extremely smoothly without any trouble. Further, when both wheels of the moving stabilizer reach their obstacles, the axle similarly tilts through the wheels and one wheel of the other moving stabilizer also tilts. The device moves smoothly even if it moves in this state, and it moves very easily to a predetermined place without adversely affecting the steering and directivity of the moving stabilizer itself.

(Embodiment of the Invention) FIGS. 1 to 6 show an embodiment of the present invention.

The base 30 is a fixing member that is joined to the leg or bottom of a device such as a press machine, and constitutes an example of the fixing member of the present invention together with the receiving member 31. The male screw member 31a of the receiving member 31 is screwed into the female screw portion 30a of the base 30, and the crimp portion 31b is crimped. As a result, the receiving member 31 is integrally connected to the base 30. At the center of the receiving member 31, a screw hole 31c into which a mounting bolt (not shown) to be mounted on the leg or bottom of the device is screwed is formed, and further, a step hole 31d is formed thereunder.

A frame 32 made of reinforced plastic or the like is arranged below the base 30 and outside the receiving member 31.
The ball 32 is rotatably attached to the base 30 and the receiving member 31 by balls 33 and 34. Around the upper part of the frame 32,
The handle member 35 is slidably and rotatably arranged, and the frame 32
It is mounted on the receiving part 32a. A reinforcing member 36 made of iron or the like is fixed to the upper part of the inner peripheral surface of the handle member 35, and a gear part 35a is integrally molded to the lower part of the inner peripheral part.

A pinion gear 37 made of plastic or the like is arranged inside the frame 32, and a gear portion 37a of the pinion gear 37 meshes with a gear portion 35a of the handle member 35 through a window portion 32b of the frame 32. The hexagonal head of the adjusting bolt 38 is integrally fitted to the pinion gear 37, and further the circular thrust washer is used.
39 will mate. The bolt 40 inserted into the stepped hole 31d of the receiving member 31 is screwed into the adjusting bolt 38 through the thrust washer 39 with the collar 41 and the washer 42 interposed therebetween. As a result, the adjustment bolt 38 and the pinion gear
37 is rotatably attached to the receiving member 31.

The adjustment bolt 38 is screwed with the adjustment nut 43. When the adjusting nut 43 is fitted into the vibration isolator 44, the both are integrally fixed. The vibration isolator 44 has a void space 44a in the center, and the portion of the adjusting bolt 38 projecting downward from the adjusting nut 43 is located in this void space 44a.
As shown in FIG. 5, the vibration isolator 44 has a space 3a surrounding the void 44a.
Since it has a solid portion 44b of a predetermined thickness over 60 degrees,
There is no imbalance in elastic force as in the conventional case. The vibration isolator 44 has a planar shape as shown in FIG. 5 (A), and is housed in the lower half of the frame 32 so that it cannot rotate and can move up and down.

An axle 46 is inserted through and supported by a portion of the frame 32 that is eccentric from the load center 45 in a position away from the vibration isolator 44 in a width direction, and is positioned at both ends of the axle 46 outside the frame 32. Then, two moving wheels 47 and 48 are attached respectively. As shown in FIGS. 1, 3, and 6, the axle 46 inserted through and supported by the frame 32 is in sliding contact with the sliding contact support portion formed in the frame 32 except for the portion of the frame 32 that supports the wheels 47 and 48. It is supported. That is, the frame 32 through which the axle 46 is inserted and supported.
As shown in FIGS. 1, 3, and 6, the diameter of the axle 46 is reduced so that the axle 46 can be slidably supported at the sliding contact support portion of the axle 46, and both wheels 47 can be moved from the sliding contact support portion of the axle 46. A loose fitting portion 46a is formed in a taper shape so as to gradually increase in diameter at an angle of about 10 degrees toward the mounting portions of the and 48. And these loose fitting parts 46a, 4
In 6a, these wheels 47 and 48 for movement on the axle 46 have a play such that they move up and down together with the axle 46 via the reduced diameter portion in the sliding contact support portion of the axle 46.

Three or more of the above-described mobile stabilizers for equipment are attached to the legs or bottom of equipment such as press machines. The mounting method is to install a mounting bolt (not shown) that passes through the mounting hole (not shown) at the leg or bottom of the device into the screw hole 31c.
Screw in and fix. The states shown in FIGS.
The moving wheels 47 and 48 are in contact with the floor surface G.

When the device is moved to a desired installation place, the moving wheels 47 and 48 are rolled by pushing the device in the desired direction so that the device can be moved in the desired direction. When changing the moving direction, if the pushing direction of the equipment is changed, the resistance of the moving wheels 47, 48 to the floor surface G acts on the frame 32 and acts as a rotational force about the load center 45. By the rotation of 34, the directions of the frame 32 and the moving wheels 47, 48 freely follow the moving direction. At this time, the weight of the device depends on the base 30, the receiving member 31, the balls 33,
The load is applied to the floor surface G via the 34, the frame 32, the axle 46 and the moving wheels 47, 48. In particular, there are obstacles such as protrusions or depressions on the floor during the movement of the equipment to the prescribed installation location in the factory. When crossing over, one wheel 47 of the two moving wheels 47, 48 of the device movement stabilizer is on the obstacle and the axle 46 swings through the loose fitting portion 46a between the axle 46 and the frame 32. And move the other wheel 48 up and down in the opposite direction. Even if the equipment is moved in this state, a slight change on the road surface is absorbed only by the wheels 48, and it works well without affecting the maneuverability and directivity of the movement stabilizer itself. When both wheels 47, 48 of the movement stabilizer reach the obstacle, the axle
And the wheel 46 'of the other movement stabilizer also tilts, and the axles 46, 46' absorb the change without the wheel 47 or 48 contacting the frame 32. In this state, by pushing the device in the desired direction, the operability and directivity of the movement stabilizer itself will be good and the movement will be smooth. When the equipment is installed at a desired position, the frame 32 is pressed so as not to rotate, or the frictional resistance between the floor surface G and the moving wheels 47, 48 is increased due to the weight of the equipment. The handle member 35 is rotated in a predetermined direction without being pressed against. When the adjusting bolt 38 is rotated by the rotation of the handle member 35 via the pinion gear 37, the vibration isolator 44 and the adjusting nut 43 are stopped by the frame 32, so that they are lowered along the adjusting bolt 38.

Even after the lower end surface of the vibration isolator 44 contacts the floor surface G, if the vibration isolator 44 is further lowered, the moving wheels 47, 48 rise away from the floor surface G. At this time, the weight of the device is applied to the floor surface G through the base 30, the receiving member 31, the thrust washer 39, the adjusting bolt 38, the adjusting nut 43, and the vibration isolator 44. Further, if the handle member 35 is rotated while the vibration isolator 44 is in contact with the floor surface G, the level adjustment is performed.

In the present embodiment, by making the moving wheels 47, 48 twin wheels, it is possible to approach the load center 45 until just before the position where the axle 46 hits the vibration isolator 44.
The degree of freedom in designing 7,48 axle positions and outer diameter can be increased. For example, the outer diameter of the moving wheels 47, 48 can be increased so that the moving wheels 47, 48 partially overlap the load center 45 when viewed from the front, and thus even if a large load is applied to the moving wheels. The movement of equipment can be lightened.

Further, in the conventional example shown in FIG. 8, since the notch for receiving a part of the moving wheel 6 is provided in the vibration isolator 4,
There is also a problem that the elastic force of the portion of the vibration isolator 4 provided with the cutout portion becomes weak, resulting in imbalance in the elastic force.
In the present embodiment, the use of two wheels eliminates the need for a notch in which the moving wheels are inserted in the vibration isolator 44, thus providing 360 degrees around the void 44a.
Since the solid portion 44b having a predetermined thickness is provided over time,
It is possible to eliminate the imbalance of the elastic force of the vibration isolator 44.

(Modification) The shape of the sliding contact support portion of the frame that supports the axle 46 and the shape of the loose fitting portion between the axle 46 and the frame 32 is not limited to that in the above-described embodiment, but as shown in FIG. ′ May have a straight hole shape with a uniform inner diameter. In this case, in the axle 46 ′, the sliding contact support portion between the wheels 47 and 48 with the frame 32 forms a portion having substantially the same diameter as the shaft hole diameter. It may be formed in a taper shape such that the diameter gradually decreases in both directions of the wheel mounting portion. In other words, the two axle wheels 47, 48 are in sliding contact with the axle shaft 46 'and from the sliding contact portion.
It is also possible to form a loosely fitting portion 46a 'that gradually reduces in diameter over the mounting portion and to provide an appropriate gap with the frame 32.

The adjusting nut 43 and the vibration isolator 44 may be integrally molded. In the illustrated embodiment, the adjusting bolt 38 is the center of the load.
Although it is located at 45, it may be eccentric from the load center 45 in the direction opposite to the axle 46 as shown in FIG. Further, a handle member integrally formed with the adjusting bolt 38 may be projected from the window portion 32b of the frame 32. Further, the handle member 35 may have a shape in which the thickness in the height direction is reduced according to the outer diameter of the wheels 47, 48.

(Effects of the Invention) As described above, according to the present invention, the fixing member attached to the leg or bottom of the device, the frame rotatably attached to the fixing member, and the rotation about the fixing member. An adjust bolt that is mounted so that it is possible to adjust, an adjust nut that is screwed into the adjust bolt, a vibration-proof body that is non-rotatably and vertically movable with respect to the frame, and that is integrally fixed to the adjust nut. In a device movement stabilizer including a handle member for transmitting a rotational force to an adjusting bolt and a moving wheel supported by the frame, the center of the fixing member and the load center formed by the adjusting bolt are eccentric in the traveling direction. At the position of the frame, two moving wheels are attached at a position on the outer side in the width direction of the frame, and the change on the floor surface received by the moving wheels. In response to the above, the axle is formed so as to be swingable about its intermediate point, and by using the moving wheels as twin wheels, it is possible to avoid hitting the adjust bolt and the vibration isolator. ， The flexibility of designing the axle position, axle width and outer diameter of the two wheels of the moving wheel can be increased, and when moving the equipment, part of the movement stabilizer or one of the two wheels is on the floor. Even if an obstacle such as a protrusion or a dent is encountered and the vehicle gets over this obstacle, the wheels sway at an appropriate angle along with the axle and do not hit the frame. ， The device can be moved smoothly in a predetermined direction without affecting the directivity.
Further, since the outer diameter of the wheel can be increased, the movement can be lightened even if the load is large, and the axle is slidably supported by the sliding contact support portion with the frame and has the axle width, so the rigidity is strong and strong. Since the load is divided into two by the two wheels, the capacity of the allowable load is improved, and the differential rotation of the two wheels improves turning performance.

[Brief description of drawings]

1 is a sectional view taken along the line AA of FIG. 3 showing an embodiment of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a side view thereof, and FIG. 4 is a plan view thereof. (A) and (B) are a plan view and a front view of a vibration isolator, FIG. 6 is a sectional view of a wheel and an axle, FIG. 7 is a sectional view of a wheel and an axle showing another embodiment of the present invention, and FIG. [FIG. 7] is a cross-sectional view showing a conventional example. 30 …… Base, 31 …… Receiving member, 32 …… Frame, 33, 34…
… Ball, 35 …… Handle member, 35a …… Gear part, 37 …… Pinion gear, 37a …… Gear part, 38 …… Adjust bolt, 39
...... Thrust washer, 40 ...... Bolt, 41 ...... Color, 42
…… Washers, 43 …… Adjust nuts, 44 …… Anti-vibration body, 4
5 …… Load center, 46 …… Axle, 46a …… Free fitting part, 47,48 …… Wheels for movement

Claims (1)

[Scope of utility model registration request] 1. A fixing member attached to a leg portion or a bottom portion of a device, a frame rotatably attached to the fixing member, an adjusting bolt rotatably attached to the center of the fixing member, and the adjusting bolt. An adjusting nut that is screwed into the non-rotating member, a non-rotatable and ascendable and descendable movable member that is integrally fixed to the adjusting nut, and a handle member that transmits a rotational force to the adjusting bolt. In a device movement stabilizer including a moving wheel supported by the frame, an axle is inserted in a width direction of the frame that is eccentric in a traveling direction from a center of a load formed by a center of the fixing member and an adjusting bolt. Two moving wheels are attached to both sides of the axle, and the axle is slidably supported on the frame and the two sliding wheels are moved from the slidable support portion. A loose fitting portion is formed that gradually increases in diameter toward the mounting portion side of the driving wheel to provide an appropriate gap with the axle, or the axle is slidably contacted with the frame and the two movements are made from the slidable contact portion. A loose fitting portion that gradually reduces in diameter is formed toward the mounting portion of the vehicle wheel to provide an appropriate gap with the frame, and the axle is responsive to changes in the floor surface received by the moving wheels. A movement stabilizer for equipment, which is formed so as to be swingable at an appropriate angle through a gap with a frame.