JP2007045591A - Supporting frame - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a supporting frame having simple construction for stably supporting an object. <P>SOLUTION: The supporting frame instead of a conventional supporting frame for supporting the object comprises at least three supporting mechanisms each having a supporting member on which a spherical face is formed contactable with the lower face of the object, and a supporting structure for supporting at least three supporting mechanisms. The supporting mechanisms each have the supporting member, a guide member for movably guiding the supporting member in the vertical direction, and an actuator for elevating the supporting member in the vertical direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a support frame that can support an object. In particular, the present invention relates to a support frame characterized by a structure for supporting an object.

A support cradle is used to support the object.
If the object has special conditions, a support frame that meets the conditions is required.
For example, when a target object is high temperature or low temperature, the support stand which can support a target object appropriately also in such an environment must be provided.
For example, when the object is a pallet on which a mold containing hot water is placed, the pallet itself is also hot.
A general support base is in the form of a base made by combining plate materials. When such a high-temperature object is placed on a general support frame, the support frame receives a high temperature and thermally expands. Depending on the structure of the support frame, differences in the state of thermal expansion of each part may occur, so that unexpected deformation may occur in the support frame. When such a phenomenon occurs, it is predicted that the support frame cannot properly support the object.

In particular, when the support frame moves while supporting the object, it is necessary to prevent the running from becoming unstable due to unexpected deformation of the support frame.
In addition, when the weight of the object is large, the above requirement is increased.

JP-A-10-119784 JP 2003-220404 A

  The present invention has been devised in view of the problems described above, and an object of the present invention is to provide a support frame that can stably support an object with a simple configuration.

To achieve the above object, at least three support mechanisms each having a support base capable of supporting an object according to the present invention and having a support member formed with a spherical surface capable of contacting the lower surface of the object;
A support structure that supports at least three of the support mechanisms.

  According to the configuration of the present invention, at least three support mechanisms have a support member formed with a spherical surface that can contact the lower surface of the object. A support structure supports at least three of the support mechanisms. As a result, even if the object expands or contracts due to a temperature change or the like, slippage occurs between the lower surface of the object and the spherical surface of the support member, and an unreasonable force is exerted on the support mechanism and the support structure. The generated object can be stably supported.

As described above, the support frame that can support the object according to the present invention has the following effects due to its configuration.
Since the support structure supports at least three support mechanisms and the spherical surfaces of the support members of the at least three support mechanisms are in contact with the lower surface of the object, the object is temporarily expanded or contracted due to some cause such as a temperature change. Even in this case, slipping occurs between the lower surface of the object and the spherical surface of the support member, and an excessive force is generated in the support mechanism and the support structure, so that the object can be stably supported.
Therefore, it is possible to provide a support frame that can stably support an object with a simple configuration.

  Below, some embodiment of the support stand based on this invention is described. The present invention includes a mode in which any of the embodiments described below or two or more of them are combined.

The support frame according to the embodiment of the present invention includes the support mechanism, the support member, a guide member that guides the support member so as to be movable in the vertical direction, and an actuator that raises and lowers the support member in the vertical direction.
With the configuration of the above embodiment, the guide member guides the support member to be movable in the vertical direction. An actuator raises and lowers the support member in the vertical direction. As a result, when the support member is raised and lowered in the vertical direction using the actuator, the support member guided by the guide member moves in the vertical direction, the spherical surface of the support member contacts the lower surface of the object, and the object is moved. Can be lifted or lowered.

A support frame according to an embodiment of the present invention includes a spherical member having a spherical surface with the support member facing upward, and a fixing member that fixes the spherical member from below, and the actuator supports the fixing member. It is a linear motion actuator that is supported by the support structure and can expand and contract in the vertical direction.
With the configuration of the above embodiment, the spherical member is formed with a spherical surface facing upward. A fixing member fixes the spherical member from below. A linear motion actuator supported by the support structure and capable of extending and contracting in the vertical direction supports the fixing member. As a result, when the linear motion actuator expands and contracts, the fixing member moves up and down, and the object whose lower surface is supported by the spherical surface of the spherical member moves up and down.

A support frame according to an embodiment of the present invention includes a spherical member formed with a spherical surface with the support member facing upward, and a beam-structured fixing member that fixes the spherical member in the center, and the actuator is fixed. A pair of linear actuators that support both ends of the member, are supported by the support structure, and can extend and contract in the vertical direction.
With the configuration of the above embodiment, the spherical member is formed with a spherical surface facing upward. A fixing member having a beam structure fixes the spherical member in the center. A pair of linear actuators supported by the support structure and extendable in the vertical direction support both ends of the fixing member. As a result, when the linear motion actuator expands and contracts, the fixing member moves up and down, and the object whose lower surface is supported by the spherical surface of the spherical member moves up and down.

In the support frame according to the embodiment of the present invention, the guide member supports the support member, and the longitudinal member whose longitudinal direction is aligned with the vertical direction is constrained from rotating around the vertical axis and moving in the horizontal direction. And a guide guide for guiding the movement in the vertical direction.
By the structure of the said embodiment, a longitudinal member supports the said supporting member, and makes a longitudinal direction follow a perpendicular direction. A guide guides the longitudinal member to restrain the rotation around the vertical axis and the movement in the horizontal direction and freely move in the vertical direction. As a result, the guide force receives the horizontal force acting on the longitudinal member and the rotational force in the horizontal plane, and prevents the horizontal force and rotational force from acting on the actuator.

The support gantry according to the embodiment of the present invention includes a pair of first structures in which the support structure is a beam structure in which the support mechanisms are fixed to both ends, and the longitudinal directions of the support structures are aligned with each other. A beam structure that supports the first structure, and has a pair of second structures that are aligned with each other in the longitudinal direction. The longitudinal direction of the first structure and the second structure as viewed from above Intersects with the longitudinal direction.
With the configuration of the above-described embodiment, the pair of first structures are beam structures in which the support mechanisms are fixed to both ends, and the longitudinal directions thereof are aligned. The pair of second structures are beam structures that support the pair of first structures, and are aligned in the longitudinal direction. As a result, when the first structure and the second structure are thermally expanded, the first structure mainly expands and contracts in the longitudinal direction of the beam structure, and the second structure mainly has a beam structure. It expands and contracts in the longitudinal direction of the body and can prevent unexpected thermal deformation.

A support frame according to an embodiment of the present invention includes a traveling mechanism having a wheel rotatably supported by the second structure and a drive mechanism that rotationally drives the wheel, wherein the first structure is the first structure. Overlaid on top of the two structures.
With the configuration of the above embodiment, the wheel is rotatably supported by the second structure. A drive mechanism rotationally drives the wheels. The first structure is overlaid on the second structure. As a result, when the temperature of the object changes, the heat effect transmitted to the second structure is reduced, and the vehicle can travel stably when the mechanism rotates the wheel.

  The best mode for carrying out the present invention will be described below with reference to the drawings. In each figure, common portions are denoted by the same reference numerals, and redundant description is omitted.

Initially, the parking apparatus which concerns on embodiment of this invention is demonstrated based on a figure.
FIG. 1 is a plan view of a support frame according to an embodiment of the present invention. FIG. 2 is a side view of the support frame according to the embodiment of the present invention. FIG. 3 is a front view of the support frame according to the embodiment of the present invention. FIG. 4 is a side sectional view of the support mechanism according to the embodiment of the present invention. FIG. 5 is a front view of the support mechanism according to the embodiment of the present invention. FIG. 6 is a hydraulic line system diagram of the support frame according to the embodiment of the present invention.
For ease of explanation, it is assumed that the object is a pallet on which high temperature objects are placed.

The support frame can support the object 5 and includes at least three support mechanisms 10, a support structure 20, and a hydraulic unit 30.
The place supported by the support frame on the lower surface of the object is horizontal.
For example, the object is a refractory material pallet.
Below, the case where a support stand is provided with the four support mechanisms 10 is demonstrated to an example.

  The support mechanism 10 is a mechanism that supports the lower surface of the object, and includes a support member 11, a guide member 12, and an actuator 13.

The support member 11 is a member formed with a spherical surface Q that can come into contact with the lower surface of the object, and includes a spherical member 11a and a fixed member 11b.
The spherical member 11a is a member formed with a spherical surface Q facing upward.
The fixing member 11b is a member that fixes the spherical member 11a from below.
The fixing member 11b may be a member having a beam structure in which a spherical member is fixed at the center.
For example, the spherical member 11a is a member that has a rectangular shape when viewed from above and has a convex shape with a predetermined radius of curvature upward from the center of the upper surface.
For example, the fixing member 11b is a beam structure having a groove in which the spherical member 11a is fitted in the upper central portion, and a connecting portion to which a rod end of a hydraulic cylinder described later is connected at both ends of the lower portion.

The guide member 12 is a member that guides the support member 11 so as to be movable in the vertical direction.
The guide member 12 may have a longitudinal member 12a and a guide guide 12b. The longitudinal member 12a is a member that supports the support member and has the longitudinal direction along the vertical direction. The guide 12b is a mechanical element that freely guides the vertical movement by restricting the rotation of the longitudinal member about the vertical axis and the horizontal movement.
For example, the longitudinal member 12a may be a long ball spline shaft with a spline groove cut, and the guide guide 12b may be a guide that fits into the ball spline shaft.
The upper end of the longitudinal member 12a is connected to the central portion of the fixed member 11b.
If it does in that way, the guide 12b will restrain the movement in the surface orthogonal to the longitudinal direction of the longitudinal member 12a, and rotation around a longitudinal direction, and makes the movement of a longitudinal direction free. Since the central axis of the guide 12b is vertical, the longitudinal member 12a is restrained from moving in the horizontal direction and rotating around the vertical axis, and is free to move in the vertical direction.

The actuator 13 is a mechanical element that raises and lowers the support member 11 in the vertical direction.
The actuator 13 may be a linear motion actuator that supports the fixing member 11b, is supported by the support structure 20, and can expand and contract in the vertical direction.
The actuator 13 may be a pair of linear motion actuators that support both ends of the fixing member 11b, are supported by the support structure, and can expand and contract in the vertical direction.
For example, the actuator 13 is a so-called trunnion-mounted double-acting hydraulic cylinder having a single rod.
The rod end of one rod of the hydraulic cylinder 13 is rotatably connected to the connecting portion of the support member 11.
An attachment shaft fixed to the rod side head cover of the hydraulic cylinder 13 is rotatably connected to the support structure 20.

The support structure 20 is a structure that supports at least three support mechanisms 10.
For example, the support structure 20 is a structure that supports the four support mechanisms 10.
The support structure 20 may include a pair of first structures 21, a pair of second structures 22, a travel mechanism 23, other auxiliary devices 24, and a heat insulating cover 25.

The first structure 21 is a beam structure in which the support mechanisms 20 are fixed at both ends. The pair of first structures 21 align the longitudinal direction of each other.
When viewed from above, the spherical surface Q of the support mechanism 20 is provided in alignment with or close to the longitudinal center axis of the first structure 21.
The second structure 22 is a beam structure that supports the first structure. The pair of second structures 22 align the longitudinal direction of each other.
When viewed from above, the longitudinal direction of the first structure 21 and the longitudinal direction of the second structure 22 intersect.
For example, when viewed from above, the first structure 21 and the second structure 22 intersect in a cross-beam shape.
The first structure 21 may be overlaid on the upper side of the second structure 22.

The traveling mechanism 23 is a mechanism that causes the support frame to travel, and includes a wheel 23a and a drive mechanism 23b.
The wheel 23 a is rotatably supported by the second structure 22.
For example, the wheel 23a is an iron wheel with both sides capable of rolling on the rail.
The drive mechanism 23b is a mechanism that rotationally drives the wheels 23a.

The other auxiliary machine 24 is an auxiliary machine for the support frame.
For example, the other auxiliary machine 24 is a cable reel.

  The heat insulating cover 25 is a cover for preventing the radiant heat of the object from being transmitted to the support frame.

The hydraulic unit 30 is a hydraulic device for operating the support frame.
For example, the hydraulic unit 30 includes a hydraulic pressure source 31, an elevation switching valve 32, an on-load valve 33, a rotation switching valve 34, a first relief valve 35, a second relief valve 36, a third relief valve 37, and a flow rate adjustment valve 38. And a hydraulic motor 39.
The hydraulic source 31 is a mechanism that supplies hydraulic oil.
The raising / lowering switching valve 32 is a four-port electromagnetic switching valve that switches between raising, lowering, and stopping the support mechanism.
The on-load valve 33 is a 4-port electromagnetic switching valve that switches the pressure due to operation among the first pressure P1, the second pressure P2, and zero.
The rotation switching valve 34 is a 4-port electromagnetic switching valve that switches between normal rotation, reverse rotation, and stop of the cable reel.
The first relief valve 35 is a relief valve that sets the first pressure P1.
The second relief valve 36 is a relief valve that sets the second pressure P2.
The third relief valve 37 is a relief valve that encloses the hydraulic oil sealed on the head side of the hydraulic cylinder so as not to exceed a predetermined pressure P3.
The flow rate adjusting valve 38 is a valve that sets the ascending speed and descending speed of the hydraulic cylinder.
The hydraulic motor 39 is a hydraulic motor that rotates the cable reel.

The operation of the support frame according to the embodiment of the present invention will be described below.
First, the object 5 is supported on the temporary table 40.
The support frame is located below the object 5. The on-load valve has zero hydraulic pressure.
Switch the on-load valve and set the hydraulic oil pressure to P2.
P2 is a pressure that operates the hydraulic cylinder but is insufficient for the force to lift the object 5.
The raising / lowering switching valve 32 is switched to raise and lower the support mechanism.
The hydraulic oil flows to the head side of the hydraulic cylinder 14 at a flow rate set in the flow rate adjustment valve 38. The rod of the hydraulic cylinder 14 extends at a speed corresponding to the flow rate.
The support member 11 is raised, and the spherical surfaces Q of the four support members hit the lower surface of the object 5.
Switch the on-load valve and set the hydraulic oil pressure to P1.
P1 is a pressure sufficient for the force with which the hydraulic cylinder lifts the object 5.
The hydraulic oil flows to the head side of the hydraulic cylinder 14 at a flow rate set in the flow rate adjustment valve 38. The rod of the hydraulic cylinder 14 extends at a speed corresponding to the flow rate.
The support member 11 is raised, the spherical surface Q hits the lower surface of the object 5, and the object 5 moves away from the temporary table 40.
The rods of the four hydraulic cylinders 13 are fully extended.
The elevation switching valve 32 is switched to stop the support mechanism.
The drive mechanism 23b is operated to rotate the wheel 23a.
The rotation switching valve 34 is switched, and the cable is wound or fed out by the cable reel.
The support frame can travel and transport the object.

The support frame moves to a predetermined place. Temporary tables 40 are placed on both sides of the support frame.
The up / down switching valve 32 is switched to lower the support mechanism.
The hydraulic oil on the head side of the hydraulic cylinder returns to the hydraulic source 31 at a flow rate set in the flow rate adjustment valve 38. The rod of the hydraulic cylinder 14 contracts at a speed corresponding to the flow rate.
The support member 11 descends and the object 5 gets on the temporary table.
Further, the hydraulic fluid on the head side of the hydraulic cylinder 14 returns to the hydraulic power source 31 at a flow rate set in the flow rate adjustment valve 38. The rod of the hydraulic cylinder 14 contracts at a speed corresponding to the flow rate.
When the rod of the hydraulic cylinder contracts, the elevation switching valve 32 is switched to stop the support mechanism.
Switch the on-load valve to zero hydraulic pressure.
By doing so, the object can be moved.

When the support frame of the above-described embodiment is used, the following effects are exhibited.
Since the four support mechanisms 10 have the support member 11 formed with the spherical surface Q that can contact the lower surface of the object, and the support structure 20 supports the four support mechanisms 10, the object is temporarily Even if it expands or contracts due to some cause such as a change, slipping occurs between the lower surface of the object and the spherical surface of the support member, and an unreasonable force is generated in the support mechanism 10 and the support structure 20. Can be supported stably.
Since the guide member 12 guides the support member 11 movably in the vertical direction, and the linear motion actuator 13 moves the support member 11 in the vertical direction, the linear motion actuator 13 is used to move the support member 11 in the vertical direction. When it is raised and lowered, the support member 11 guided by the guide member 12 moves in the vertical direction, the spherical surface Q of the support member 11 comes into contact with the lower surface of the object 5, and the object 5 can be lifted and lowered.
The spherical member 11a is formed with a spherical surface Q facing upward, the fixing member 11b fixes the spherical member 11a from below, and the hydraulic cylinder 13 supported by the support structure 20 and capable of extending and contracting in the vertical direction supports the fixing member 11b. Therefore, when the hydraulic cylinder 13 expands and contracts, the fixing member 11b moves up and down, and the object 5 whose lower surface is supported by the spherical surface Q of the spherical member 11a moves up and down.
The spherical member 11a is formed with a spherical surface Q facing upward, the beam-shaped fixing member 11b is fixed to the center of the spherical member 11a, and a pair of hydraulic cylinders 13 that are supported by the support structure 20 and can be expanded and contracted in the vertical direction are fixed. Since both ends of the member 11b are supported, when the hydraulic cylinder 13 expands and contracts, the fixed member 11b moves up and down, and the object 5 whose lower surface is supported by the spherical surface Q of the spherical member 11a moves up and down.
The longitudinal member 12a supports the support member 11 so that the longitudinal direction is along the vertical direction, and the guide guide 12b guides the longitudinal member 12a while restricting the rotation around the vertical axis and the movement in the horizontal direction and allowing the vertical movement freely. As a result, the guide force 12b receives the horizontal force acting on the longitudinal member 12a and the rotational force in the horizontal plane, thereby preventing the horizontal force and rotational force from acting on the actuator 13.
A pair of first structures 21 is a beam structure in which the support mechanisms 10 are fixed to both ends, and the longitudinal directions thereof are aligned, and a pair of second structures 22 supports the pair of first structures 21. Since the structures are aligned with each other in the longitudinal direction, when the first structure 21 and the second structure 22 are thermally expanded, the first structure 21 is mainly in the longitudinal direction of the beam structure. The second structure 22 expands and contracts mainly in the longitudinal direction of the beam structure, and unexpected thermal deformation can be prevented.
Since the wheel 23a is rotatably supported by the second structure 22, the drive mechanism 23b rotationally drives the wheel 23a, and the first structure 21 is stacked on the upper side of the second structure 22. When the temperature changes, the influence of heat transmitted to the second structure 22 is reduced, and when the drive mechanism 23b rotates the wheel 23a, the vehicle can travel stably.

The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the scope of the invention.
The case where the support frame includes four support mechanisms has been described as an example. However, the present invention is not limited to this. For example, three support mechanisms or N (5, 6,...) Support mechanisms are included. It may be.

It is a top view of the support frame which concerns on embodiment of this invention. It is a side view of the support frame which concerns on embodiment of this invention. It is a front view of the support stand which concerns on embodiment of this invention. It is side surface sectional drawing of the support mechanism which concerns on embodiment of this invention. It is a front view of the support mechanism which concerns on embodiment of this invention. It is a hydraulic line system diagram of the support frame concerning the embodiment of the present invention.

Explanation of symbols

Q spherical surface 5 object 10 support mechanism 11 support member 11a spherical member 11b fixed member 12 guide member 12a longitudinal member 12b guide guide 13 actuator 20 support structure 21 first structure 22 second structure 23 traveling mechanism 23a wheel 23b drive mechanism 24 Auxiliary machine 25 Heat insulation cover 30 Hydraulic unit 31 Hydraulic source 32 Elevation switching valve 33 On-load valve 34 Rotation switching valve 35 First relief valve 36 Second relief valve 37 Third relief valve 38 Flow rate adjustment valve 39 Hydraulic motor 40 Temporary Stand

Claims (7)

A support frame that can support an object,
At least three support mechanisms having a support member formed with a spherical surface capable of contacting the lower surface of the object;
A support structure that supports at least three of the support mechanisms;
A support gantry characterized by comprising: The support mechanism includes the support member, a guide member that guides the support member to be movable in a vertical direction, and an actuator that raises and lowers the support member in a vertical direction.
The support frame according to claim 1. The support member has a spherical member formed with a spherical surface facing upward, and a fixing member for fixing the spherical member from below,
The actuator is a linear motion actuator that supports the fixing member and is supported by the support structure and can be expanded and contracted in a vertical direction.
The support frame according to claim 2. The supporting member has a spherical member formed with a spherical surface facing upward, and a fixing member of a beam structure in which the spherical member is fixed in the center,
The actuator is a pair of linear actuators that support both ends of the fixing member, are supported by the support structure, and can be expanded and contracted in the vertical direction.
The support frame according to claim 2. The guide member supports the support member and guides the longitudinal member having a longitudinal direction along the vertical direction and the longitudinal member to freely move in the vertical direction by restricting rotation around the vertical axis and movement in the horizontal direction. With a guide,
The support frame according to claim 2. The support structure is a beam structure in which the support mechanisms are fixed to both ends, and a pair of first structures whose longitudinal directions are aligned with each other, and a beam structure that supports the pair of first structures. And having a pair of second structures aligned in the longitudinal direction of each other,
When viewed from above, the longitudinal direction of the first structure and the longitudinal direction of the second structure intersect,
The support frame according to claim 1. A traveling mechanism having a wheel rotatably supported by the second structure and a drive mechanism for rotationally driving the wheel;
Prepared,
The first structure is overlaid on the second structure;
The support frame according to claim 6.

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