JP4914934B1 - Leveling device - Google Patents

Abstract

In a leveling device having a structure in which a wedge-shaped movable body is movably interposed between an upper support base and a lower support base, the upper support base is not provided separately. The parallelism between the upper surface of the lower surface and the lower surface of the lower support can be maintained precisely.
An upper support base, a wedge-shaped movable body, and a lower support base are stacked and formed on both side walls of concave grooves and 32 provided in the support bases and respectively. The both sides of the spindle support 20 are fitted into the recesses 24 and 34, and the spindle 18 screwed to the movable body 16 is supported by the spindle support 20 so as to be freely rotatable. Configured.
[Selection] Figure 2

Description

  The present invention relates to a leveling device, and more particularly, to a novel structure that can advantageously maintain parallel accuracy of upper and lower surfaces in a leveling device.

  Conventionally, when objects such as heavy machinery and equipment are installed on a predetermined foundation, a plurality of leveling can be adjusted at an appropriate position between the objects and the foundation surface. By arranging the devices and adjusting the height of each leveling device, a horizontal level can be obtained, and horizontal installation of such objects can be realized.

  As one of such leveling devices, in Japanese Patent Application Laid-Open No. 2006-224230 (Patent Document 1), a lower mold, an intermediate mold overlaid thereon, an upper mold overlaid on the intermediate mold, and an intermediate mold An adjustment bolt screwed to the rear, and a columnar column that restrains the movement of the adjustment bolt in the front-rear direction while pivotally supporting the rear end side of the adjustment bolt in the horizontal direction. A swallowing groove for swallowing the support is provided at the rear, and the middle mold is a side-view wedge-shaped block with an inclined surface up and down, and the lower end of the support is provided vertically in the rear end of the lower mold Proposed is a height adjustment device having a structure in which the upper end portion of the support column is inserted into the guide hole provided in the vertical direction at the rear end portion of the upper die, thereby causing the middle die to move forward. Or when moving it backwards Even, it is to be able to maintain the upper mold stability and accuracy of height adjustment.

  However, in such a height adjusting device, the columnar columns supporting the adjusting bolt are inserted into the guide holes provided in the upper and lower molds respectively, and the upper and lower molds are inserted. Since it is designed to rotate around its axis, the horizontal movement of the adjusting bolt is prevented, and the wedge-shaped middle mold is moved up and down. In order to move the mold and the lower mold in a fixed direction in the horizontal direction, it is necessary to separately provide a mechanism for guiding the wedge-shaped middle mold between the upper mold and the lower mold. In particular, the adjustment bolt and the columnar support are orthogonally crossed so that the thrust load applied by the adjustment bolt has uniform surface pressure on the upper and lower surfaces of the wedge-shaped middle mold and is transmitted to the upper mold and the lower mold. In order to maintain the parallelism of the upper surface of the upper mold and the lower surface of the lower mold precisely by moving the middle mold in a certain direction in the horizontal direction, the wedge-shaped medium mold guide is necessary.

  Further, in such a height adjusting device as a leveling device, holes are provided through the upper mold and the lower mold, respectively, and the upper and lower portions of the columnar column are respectively inserted into the through holes. Since the upper die and lower die are connected, the overall height of the device is reduced and the overall thickness of the device is reduced. As long as the mold was connected, it was extremely difficult.

  Moreover, since the upper die and the lower die are formed with through holes into which the support columns are inserted, such penetration is caused by liquid leakage from an object such as a machine or device supported by the height adjusting device. The problem that liquid enters the inside of the apparatus through the holes is also inherent.

JP 2006-224230 A

  Here, the present invention has been made in the background of such circumstances, and the solution is to move a wedge-shaped movable body between the upper support base and the lower support base. In a leveling device having a structure that can be interposed, it is not necessary to separately provide a guide mechanism for the movable body so that the spindle support body that supports the spindle for moving the movable body so as to freely rotate is not rotated. In the structure, the parallelism between the upper surface of the upper support and the lower surface of the lower support can be maintained precisely, and another problem is that the leveling device is made thinner. It is possible to provide an effective structure that can be reduced, that is, the height can be lowered.

  And, in order to solve the above-mentioned problems, the present invention can be suitably implemented in various aspects as listed below, and each aspect described below can be implemented in any combination. It can be adopted. It should be noted that the aspects and technical features of the present invention are not limited to those described below, and can be recognized based on the description of the entire specification and the inventive concept disclosed in the drawings. Should be understood.

(1) A wedge-shaped movable body is movably interposed between the upper support base and the lower support base, and a spindle is screwed onto the movable body, and the movable body is moved by rotating the spindle. In a leveling device that can adjust the vertical distance between the upper support base and the lower support base by moving,
A block-shaped spindle support that is inserted into the spindle and supports the spindle so as to freely rotate is disposed between the upper support and the lower support, and the spindle insertion direction of the spindle support The engaging projections are formed on either one of the both sides in the direction perpendicular to the upper surface and the inner surface of each of the upper support and the lower support on which the spindle support is disposed. On either side, an engagement recess is formed, and by fitting the engagement protrusions and the engagement recesses, the spindle support body is connected to the upper support table and the lower support table on both sides thereof. A leveling device configured to be held and fixed.
(2) The engaging recesses are respectively disposed in the arrangement portions of the spindle support in the upper support base and the lower support base, while both sides of the spindle support are the engagement recesses. The leveling device according to the aspect (1), wherein the leveling device is configured as the engagement convex portion that is fitted into the projection.
(3) Concave grooves extending in the axial direction of the spindle are respectively formed on the opposing inner surfaces of the upper support base and the lower support base, and extend vertically in both side walls of the concave grooves. The leveling device according to the aspect (2), wherein a recess is formed as the engagement recess.
(4) Any one of the aspects (1) to (3), wherein the spindle support body has a rectangular block shape, and an insertion hole through which the spindle is inserted is provided in a central portion thereof. Leveling device according to claim 1.
(5) The spindle support has a rectangular block shape, and a center is formed by stepped portions respectively provided on both sides of the surface of either side of the spindle support in the spindle axis direction. The aspect (3) is configured such that the portion is a protrusion extending in the vertical direction, and the protrusion is fitted to both side walls of the concave groove respectively disposed on the upper support base and the lower support base. ) Or the leveling device according to (4).
(6) The above aspect, wherein fitting recesses into which the protrusions of the spindle support are fitted are formed on both side walls of the concave grooves respectively provided on the upper support base and the lower support base. The leveling device according to (5).
(7) The engaging projections are respectively disposed at the portions where the spindle support is disposed on the upper support base and the lower support base, while the engagement protrusions are respectively provided on both side surfaces of the spindle support. The leveling device according to the aspect (1), wherein a recess into which the mating convex portion is fitted is formed as the engaging concave portion.
(8) The spindle support has a rectangular block shape, and concave grooves extending in the vertical direction are provided on both side surfaces of the spindle support, respectively. The leveling device according to the aspect (7), in which recesses provided on both side surfaces are configured.

  Therefore, in such a leveling device according to the present invention, the spindle support that supports the spindle so as to freely rotate is formed into a block shape, and each of the both sides thereof, the upper support base and the lower support base, respectively. The spindle support is fixed to and held by the upper support and the lower support on both sides thereof, so that the rotation of the spindle support and the spindle Movements such as shake in the horizontal direction can be completely prevented, and therefore the movable body can always be moved in a certain direction in the horizontal direction without providing a guide mechanism for the wedge-shaped movable body. With this, the thrust load of the spindle can be effectively transmitted to the upper and lower support bases as uniform surface pressure from the upper and lower surfaces of the movable body, Parallel accuracy of the lifting platform and the lower support base of the upper and lower surfaces, it's a fact that may caused to advantageously maintained.

  Further, in such a leveling device according to the present invention, the upper and lower portions of the spindle support body are formed on the both sides of the spindle support body, since the connecting portions with the upper support base and the lower support base are formed. The height between the upper support and the lower support can be reduced as much as possible as compared with the structure in which the connecting part is provided in the part. It is possible to reduce the thickness.

  In addition, the spindle support is fixed and held on the upper support and the lower support by adopting a connection structure by fitting the upper support and the lower support on both sides of the spindle support. Since there is no need to provide a through hole, the risk of liquid entering the apparatus through the through hole due to liquid leakage or the like can be advantageously avoided.

It is explanatory drawing which shows an example of the leveling apparatus according to this invention, Comprising: (a), (b) and (c) are plane explanatory drawings of the state which made the height of such a leveling apparatus the minimum, respectively (a Are a right side explanatory view and a front explanatory view. 2A and 2B are cross-sectional explanatory views of the leveling device shown in FIG. 1, wherein FIG. 1A is a cross-sectional explanatory view taken along line AA in FIG. 1A, and FIG. 2B is a cross-sectional view taken along line BB in FIG. It is explanatory drawing. It is explanatory drawing which shows the state which maximized the height of the leveling apparatus shown by FIG. 1, Comprising: (a), (b) and (c) are respectively (a), (b) and ( It is explanatory drawing corresponding to c). It is CC sectional explanatory drawing in Fig.3 (a), Comprising: It is explanatory drawing corresponding to Fig.2 (a). It is explanatory drawing of the upper side support stand used for the leveling apparatus shown by FIG. 1, Comprising: (a), (b), (c), (d) and (e) are the plane explanatory views, It is front explanatory drawing, bottom explanatory drawing, the right side explanatory drawing of (a), and the left side explanatory drawing of (a). FIGS. 6A and 6B are cross-sectional explanatory views of the upper support shown in FIG. 5. FIGS. 5A and 5B are a DD cross-sectional enlarged explanatory view and an EE cross-sectional enlarged explanatory view, respectively, in FIG. . It is explanatory drawing of the lower side support stand used in the leveling apparatus shown by FIG. 1, Comprising: (a), (b), (c) and (d) are respectively plane | planar explanatory drawing, front explanatory drawing, It is right side explanatory drawing of (a), and left side explanatory drawing of (a). FIG. 8 is a cross-sectional explanatory view of the lower support shown in FIG. 7, and (a) and (b) are an FF cross-sectional enlarged explanatory view and a GG cross-sectional enlarged explanatory view in FIG. is there. It is explanatory drawing which shows the movable body used in the leveling apparatus shown by FIG. 1, Comprising: (a), (b), (c) and (d) are respectively plane | planar explanatory drawing, front explanatory drawing, It is right side explanatory drawing of (a) and left side explanatory drawing of (a), (e) is HH cross-section explanatory drawing in (a). FIG. 2 is an enlarged explanatory view showing a spindle and a spindle support used in the leveling apparatus shown in FIG. 1, wherein (a) is a front explanatory view of the spindle, and (b), (c), (d). And (e) are a plane explanatory view, a front explanatory view, a right side explanatory view of (c), and a left side explanatory view of (c), respectively. FIGS. 11A and 11B are enlarged explanatory views showing a form in which the spindle and the spindle support shown in FIG. 10 are assembled, and FIGS. 10A and 10B are front explanatory views of such an assembled body and the right side of FIG. It is surface explanatory drawing, (c) is II sectional drawing explanatory drawing in this (a). FIG. 3 is a perspective explanatory view showing a fitting arrangement of a spindle support with respect to a lower support in the leveling device shown in FIG. 1. It is a perspective explanatory view which shows the fitting arrangement | positioning form from which a lower side support stand and a spindle support body differ in the other example of the leveling apparatus according to this invention. It is front expansion explanatory drawing which shows the form which provides the spring which connects an upper side support stand and a lower support stand elastically to the side surface of the leveling apparatus shown by FIG.

  Hereinafter, in order to clarify the present invention more specifically, the configuration of the present invention will be described in detail with reference to representative embodiments shown in the drawings.

  1 to 4 show a typical example of a leveling device according to the present invention in two modes of operation. That is, FIGS. 1 and 2 show a state where the height of the leveling device 10 is the lowest, and FIGS. 3 and 4 show a state where the height of the leveling device 10 is the highest. . In these drawings, the leveling device 10 includes an upper support 12 and a lower support 14 that are stacked in a form in which a wedge-shaped movable body 16 is interposed therebetween, and is screwed to the movable body 16. The movable body 16 can be moved by rotating the crimped spindle 18 while being supported by a block-shaped spindle support body 20. Then, by moving the movable body 16 forward and backward between the upper support base 12 and the lower support base 14, a vertical distance (height) between the upper support base 12 and the lower support base 14 is obtained. ) Can be changed to take a minimum height position as shown in FIGS. 1 to 2 and a maximum height position as shown in FIGS. 3 to 4. The height adjustment of a predetermined part of an object such as a machine or apparatus placed on the apparatus 10 and thus the levelness can be performed in the same manner as in the past.

  By the way, in the leveling apparatus 10, the upper support 12 has a substantially rectangular planar shape as shown in FIGS. 5 and 6, and the upper surface 12a thereof is a flat horizontal surface. On the other hand, the lower surface 12 b is formed as an inclined surface corresponding to the inclined upper surface of the wedge-shaped movable body 16, and is configured such that the opposite one side is thin and the other side is thick. In order to avoid interference with the spindle 18 in the thick portion of the upper support 12 so that the lower surface 12b of the upper support 12 is located on the inner surface where the spindle 18 and the spindle support 20 are disposed. A concave groove 22 having a predetermined width and having a stepped structure in the width direction and the depth direction is provided in the extending direction (axial direction) of the spindle 18. In addition, rectangular recesses 24 that enter the direction perpendicular to the groove (the width direction of the upper support 12) are respectively formed on both side walls of the deepest part of the groove 22 that opens to the end face of the upper support 12. Further, a corner of the recess 24 on the side of the end surface of the upper support 12 where the groove 22 opens is cut out by a predetermined length to provide a recess 24. Auxiliary recesses 26, 26 having the same depth as those are formed as fitting portions.

  Further, as can be clearly seen in FIGS. 7 and 8, the lower support base 14 has the same planar form and inner surface structure as the upper support base 12 shown in FIGS. 5 and 6 described above. That is, the lower support base 14 having a substantially rectangular planar shape has a lower surface 14 b that is a flat horizontal surface, and an upper surface 14 a that is an inclined surface corresponding to the lower surface of the movable body 16. is there. Then, on the upper surface 14a serving as the inner surface of the lower support base 14, a concave groove 32 having a stepped structure with a predetermined width is provided in the portion where the spindle 18 and the spindle support body 20 are arranged, as in the upper support base 12. The rectangular recesses are provided so as to extend in the axial direction of the spindle 18 and extend in the direction perpendicular to the grooves so as to be located at the portions where the spindle support 20 is disposed on both side walls of the groove 32. 34, 34 are formed, and auxiliary recesses 36, 36 each having a predetermined length are respectively provided at corners of the recesses 34, 34 on the end surface side of the lower support base 14 where the recessed grooves 32 open. The fitting portions are formed at the same depth.

  Further, as shown in FIG. 9, the wedge-shaped movable body 16 has an upper surface 16a and a lower surface 16b formed by inclined surfaces inclined at the same inclination angle with respect to the horizontal plane, respectively. In the planar shape, the thickness is gradually reduced from one side to the other side, and the cross section is wedge-shaped. A stepped rectangular cutout 42 is provided at the central portion of the thin portion of the movable body 16, and the center of the cutout 42 is further cut into the thick portion. A cut-out rear portion 44 is formed. Further, a screw hole 46 penetrating the movable body 16 is provided on the center line extending from the thick portion to the thin portion of the movable body 16 so as to open in the center of the notch rear portion 44. The threaded portion 18a of the spindle 18, which will be described later, can be screwed into the threaded hole 46.

  In addition, the spindle 18 and the block-shaped spindle support 20 through which the spindle 18 is inserted and supported are shown in FIGS. 10A and 10B, respectively. In this case, the spindle 18 includes a screw portion 18a having a predetermined length and a hexagonal operation portion 18b integrally provided at one end thereof, as shown in FIG. Then, the spindle 18 is rotated around its axis by rotating the operation unit 18b with a tool. A method of rotating the tool by extrapolating the outer peripheral surface of the operation unit 18b. In addition, a method of forming a hexagonal hole in the central portion of the operation portion 18b, inserting a tool there, and rotating it can also be adopted. Moreover, the spindle support 20 has a rectangular block shape as a whole as shown in (b) to (c), and is provided with an insertion hole 52 penetrating through the central portion thereof. In addition, the threaded portion 18a of the spindle 18 is inserted so as to be freely rotatable. In addition, on one surface side where the insertion hole 52 of the spindle support body 20 is opened, step portions 54 and 54 extending in the vertical direction are formed on both side portions thereof, and a central portion therebetween is protruded laterally. The form protrusion 56 is provided in a form extending in the vertical direction.

  Further, the spindle 18 and the spindle support body 20 are assembled as follows. That is, as shown in FIG. 11, thrust bearings 62 and 62 and plain washers 64 and 64 are respectively arranged on both sides of the spindle support 20, and the spindle 18 is inserted. Assembling of the structure in which the spindle 18 is supported by the spindle support 20 so as to be freely rotatable by being screwed to the threaded portion 18a and fixing the hexagonal nut 66 to the threaded portion 18a of the spindle 18 by welding. The body 60 is constructed.

  Then, using the assembly 60 of the spindle 18 and the spindle support 20 as described above, the screw portion 18a of the spindle 18 is screwed into the screw hole 46 of the movable body 16 from the notch portion 42 side of the movable body 16. On the other hand, the upper surface 16a of the movable body 16 is overlapped with the lower surface 12a of the upper support base 12 so as to face each other, and the upper surface of the lower support base 14 is disposed on the lower surface 16b side of the movable body 16. 14a are opposed to each other so that both sides of the spindle support 20 in the direction perpendicular to the spindle axis and in the horizontal direction are provided on both side walls of the groove 22 in the upper support base 12. The spindle support 20 is fitted to the side portions 24 and 24 and the concave portions 34 and 34 provided on both side walls of the concave groove 32 in the lower support base 14 respectively. Held on the upper support 12 and lower support 14, by the so caused to fixing, leveling device 10 of such assembly structure shown in FIGS. 1 to 4 is of being completed.

  In the assembly work of the leveling device 10, the fitting between the both sides of the spindle support 20 and the recesses 24 and 24 of the upper support 12 and the recesses 34 and 34 of the lower support 14 is For example, as shown in FIG. 12 as a form of fitting with the recesses 34, 34 of the lower support 14, the recesses 34, 34 of the lower support 14 are provided on the lower side of both sides of the spindle support 20. In addition, while being fitted to each other, they are fitted into the recesses 24 of the upper support 12 at the upper portions on both sides of the spindle support 20. At this time, the protrusion 56 protruding from the side surface of the spindle support 20 is provided with an auxiliary recess 26 provided in one opening of the recesses 24, 24; 34, 34 in the upper support 12 and the lower support 14. , 26; 36 and 36, respectively, so that the spindle support 20, and thus the spindle 18, can be prevented from moving in the width direction of the leveling device 10. In particular, the fitting between the projections 56 and the auxiliary recesses 26, 26; 36, 36 has a gap between the recesses 24, 24; 34, 34 and the side surface of the spindle support 20 as in this embodiment. It is effective in such a case. In addition, the recessed grooves 22 and 32 having a stepped structure provided on the inner surface (inner side) of the upper support 12 and the lower support 14 are arranged so that the spindle 18 is connected to the upper support 12 and the lower support 14. It is a lightening part provided in order to avoid the contact (interference) between them, when arrange | positioning between them.

  Therefore, in the leveling device 10 having such a structure, the block-shaped spindle support 20 is fitted to the upper support 12 and the lower support 14 on both sides thereof so as to be fixed. Therefore, the spindle support 20 does not rotate at all, and the spindle 18 inserted into the spindle support 20 is rotated to move the movable body 16 in and out ( The movable body 16 can always be moved in a constant direction in the horizontal direction because the spindle 18 does not shake in the horizontal direction even if the retreat is performed, and thus the upper surface 12a of the upper support base 12 can be moved. And the precision of the parallelism with the lower surface 14b of the lower side support stand 14 can be maintained high.

  That is, in the leveling device 10, the spindle 18 is rotated and the movable body 16 is retracted outwardly to obtain the lowest height as shown in FIG. 1 and FIG. By moving the movable body 16 between the upper support base 12 and the lower support base 14 by rotating in the direction opposite to the above, the state of the highest height as shown in FIGS. In this case, the spindle support 20 that supports the spindle 18 is fixed and held in a state in which the axial direction is always constant without rotating by uneven fitting on both sides thereof. Therefore, there is a feature that it is not necessary to separately provide a guide for guiding the movable body 16 in a certain direction, thereby maintaining the parallel accuracy. Also, it is of so that the may advantageously realize the simplification.

  Moreover, according to the structure of the leveling device 10, the spindle support 20 that supports the spindle 18 is fitted and fixed to the upper support 12 and the lower support 14 on both sides thereof so that they can be connected. Therefore, the upper and lower parts of the columnar column supporting the spindle as in the prior art are compared with the upper and lower support units in the upper and lower parts of the columnar column. Since the height portion of the connecting portion can be omitted at least and the height can be reduced, the overall height of the leveling device 10 can be reduced as much as possible.

  Further, in the leveling device 10 of such an embodiment, as is clear from FIGS. 5 and 7, the upper support base 12 and the lower support base 14 are not provided with any through holes. Then, since it is not necessary to provide through holes in the support bases 12 and 14 for connecting the upper support base 12 and the lower support base 14 to the spindle support body 20, the liquid enters the leveling device 10. This problem can be advantageously avoided.

  The exemplary embodiments of the present invention have been described in detail above. However, these are merely examples, and the present invention is not limited in any way by specific descriptions according to such embodiments. It should be understood that this is not to be construed as a manual.

  For example, the movable body 16 that is moved by screwing with the spindle 18 has a double-faced wedge shape in which the upper surface 16a and the lower surface 16b are inclined surfaces in the above example. It is also possible to use a single-side wedge shape in which only one of the lower surfaces 16b is an inclined surface. And when such a single-sided wedge shape is adopted, only the facing surface of the upper support 12 or the lower support 14 on the side facing the inclined surface provided in the movable body 16 corresponds to that. It will be made the inclined surface.

  In the illustrated embodiment, the both sides of the spindle support 20 are engaging projections, while the concave grooves 22 and 32 provided in the inner surface portions of the upper support 12 and the lower support 14. On the other hand, the recesses 24, 24; 34, 34 are formed as engagement recesses. On the other hand, the recesses 24, 24; 34, 34 are formed on the spindle support 20 side. It is also possible to form an engaging convex portion on each inner surface portion of the lower support base 14.

  Specifically, as illustrated in FIG. 13, rectangular square grooves 58 and 58 extending in the vertical direction are formed as engaging recesses on both sides of the spindle support 20 ′, while the lower support base. Projections 28, 28 in the form of opposing planar rectangles projecting from the both side walls of the stepped groove 22 ′ provided on the inner surface portion where the spindle support 20 ′ is disposed at 14 ′ with a predetermined length. Are formed as engaging convex portions.

  And there, the projections 28, 28 provided on both side walls of the concave groove 22 'in the lower support base 14' are respectively uneven in the rectangular grooves 58, 58 provided on both sides of the spindle support 20 '. By being fitted, the spindle support 20 ′ is fixed and held on the lower support 14 ′, and also on the upper support (12) side, the lower support 14 ′. In the same structure as above, the support of the spindle 18 inserted through the insertion hole 52 ′ of the spindle support 20 ′ is fixed and held by being concavo-convexly fitted to the spindle support 20 ′. It can be effectively performed in the same manner as in the embodiment.

  Furthermore, in the exemplary leveling device 10, the upper support base 12 and the lower support base 14 constituting the same are connected to each other by a concave and convex fit with the spindle support body 20, so that If the upper support 12 is gripped and lifted, only the upper support 12 may be separated. Therefore, the upper support 12 and the lower support 14 may be further connected by appropriate connecting means. For example, as shown in FIG. 14, it is desirable that the upper support 12 and the lower support 14 are connected to each other by an appropriate number of catch springs 70 on both sides thereof. Here, the catching spring 70 has a W-shaped shape, and two of them are screwed to the upper support base 12 and the lower support base 14 at their respective ends to be connected. It has been adopted.

  Furthermore, in the assembly 60 shown in FIG. 11, the protrusion 56 provided on the spindle support 20 is assembled so as to be positioned on the operation portion 18b side of the spindle 18, but on the contrary, The spindle 18 may be assembled so as to be positioned on the free end side of the screw portion 18a. In that case, the auxiliary recesses 26, 26; 36, 36 as fitting portions into which such protrusions 56 are fitted are the concave grooves 22, 24; 34, 34 at the openings of the grooves 34, 34. 32 will be formed at the corner on the back side.

  The fitting portion into which the protrusion 56 provided on the spindle support 20 is fitted is not limited to the auxiliary recesses 26, 26; 36, 36 as illustrated, but the recesses 22, 32 It is possible to use the side wall itself, and it is also possible to integrally provide an inward protruding portion on the side wall surface of the concave grooves 22 and 32 and use it as a fitting portion.

  Further, cast iron products are generally used for the upper support base 12, the lower support base 14, the movable body 16 and the like constituting the leveling device 10, but the present invention is not limited to this, and other metals are used. Products and processed products can be used.

  In addition, although illustration is omitted, in the exemplary leveling device 10, a large gap is formed between the upper support 12 and the lower support 14 between the portions made thin by the respective inclined surfaces. Therefore, a drooping portion or a rising portion is integrally provided on both sides of the upper support base 12 and the lower support base 14, and a gap between the upper support base 12 and the lower support base 14 is provided. In order to handle the leveling device 10, it is advantageous to make the width as narrow as possible.

  In addition, although not listed one by one, the present invention can be implemented in a mode with various changes, modifications, improvements, and the like based on the knowledge of those skilled in the art. It goes without saying that any one of them falls within the scope of the present invention without departing from the spirit of the invention.

DESCRIPTION OF SYMBOLS 10 Leveling apparatus 12 Upper support stand 14 Lower support stand 16 Movable body 18 Spindle 18a Screw part 18b Operation part 20 Spindle support body 22 Groove 24 Recess 26 Auxiliary recess 28 Projection 32 Groove 34 Recess 36 Auxiliary recess 42 Notch 44 Notch depth 46 Screw hole 52 Insertion hole 54 Step 56 Projection 60 Assembly 62 Thrust bearing 64 Plain washer 66 Hexagon nut

Claims (8)

A wedge-shaped movable body is movably interposed between the upper support base and the lower support base, and a spindle is screwed onto the movable body, and the movable body is moved by rotation of the spindle. In the leveling device that can adjust the distance in the vertical direction between the upper support base and the lower support base,
A block-shaped spindle support that is inserted into the spindle and supports the spindle so as to freely rotate is disposed between the upper support and the lower support, and the spindle insertion direction of the spindle support The engaging projections are formed on either one of the both sides in the direction perpendicular to the upper surface and the inner surface of each of the upper support and the lower support on which the spindle support is disposed. On either side, an engagement recess is formed, and by fitting the engagement protrusions and the engagement recesses, the spindle support body is connected to the upper support table and the lower support table on both sides thereof. A leveling device configured to be held and fixed.   The engaging recesses are respectively disposed in the arrangement parts of the spindle support in the upper support base and the lower support base, while both sides of the spindle support are fitted in the engagement recesses. The leveling device according to claim 1, wherein the leveling device is configured as the engaging convex portion to be swaged.   Grooves extending in the axial direction of the spindle are respectively formed on the inner surfaces of the upper support and the lower support that are opposed to each other, and recesses extending in the vertical direction are formed on both side walls of the grooves. The leveling device according to claim 2, wherein each of the engaging recesses is formed.   The leveling device according to any one of claims 1 to 3, wherein the spindle support has a rectangular block shape, and an insertion hole through which the spindle is inserted is provided in a central portion thereof. .   The spindle support has a rectangular block shape, and the center portion is vertically moved by stepped portions respectively provided on both sides of the surface of the spindle support in the spindle axis direction. 5. A projection extending in a direction, and the projection is fitted to both side walls of a concave groove respectively provided on the upper support base and the lower support base. Leveling device according to claim 1.   6. A fitting recess into which a protrusion of the spindle support is fitted is formed on each side wall of a groove provided in each of the upper support and the lower support. Leveling device.   The engaging convex portions are respectively disposed in the arrangement portions of the spindle support in the upper support base and the lower support base, and the engaging convex portions are respectively provided on both side surfaces of the spindle support. The leveling device according to claim 1, wherein a recess into which the engagement is made is formed as the engagement recess. The spindle support has a rectangular block shape, and concave grooves extending in the vertical direction are provided on both side surfaces of the spindle support, and the concave grooves are formed on both side surfaces of the spindle support. 8. A leveling device according to claim 7, wherein the provided recess is configured.

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