TWI451033B - Leveling device - Google Patents

Description

Leveling device Field of invention

The present invention relates to a leveling device, and more particularly to a new construction that effectively maintains the parallel accuracy of the top and bottom of the leveling device.

Background of the invention

Heretofore, when a relatively heavy object such as a machine or a device is fixed on a predetermined base, a plurality of leveling devices capable of adjusting the height are disposed between the objects and the base surface at an appropriate position, and the adjustment is performed. The height of each leveling device is used to reach a level, and the level of the above objects is fixed.

A height adjusting device of the above-mentioned level measuring device, which has a lower mold, an inner mold overlapping the lower mold, and an upper mold overlapping the inner mold, a column-shaped support post that is screwed to the rear side of the inner mold, supports the rear end side of the adjustment bolt in the horizontal direction, and restricts the movement of the adjustment bolt in the front-rear direction, and is configured to be buried behind the inner mold The inner mold is formed by a wedge-shaped block viewed from the side on which the inclined surface is provided, and the lower end of the pillar is inserted into the lower hole and the end portion is disposed in the guide hole in the up-and-down direction. The upper end of the pillar is inserted into the guide hole provided in the upper and lower directions at the end portion of the upper mold, thereby maintaining the stability of the upper mold and the accuracy of the height adjustment even if the inner mold is moved forward or backward. .

However, in the height adjusting device described above, the cylindrical pillar of the shaft adjusting bolt is inserted into the guiding hole of the upper and lower molds at the upper and lower end portions thereof, and the upper and lower molds are coupled, so that the shaft is rotated around the axis thereof. Therefore, in order to prevent the above-mentioned adjustment bolt from vibrating in the horizontal direction (vibration), the wedge-shaped inner mold is moved in a certain direction in the horizontal direction with respect to the upper and lower upper and lower molds, and must be in the upper and lower molds. There is additionally provided a mechanism for guiding the wedge-shaped inner mold. In particular, in order to make the adjusting bolt perpendicular to the cylindrical pillar and to move the inner mold in a certain direction in the horizontal direction, the parallelism between the upper surface of the upper mold and the lower surface of the lower mold is precisely maintained, so that the adjusting bolt acts. The thrust load is applied to the upper and lower dies on the upper surface of the wedge-shaped inner mold to form equal surface pressure, and the wedge-shaped inner mold needs to be guided.

Further, in the height adjusting device as the level measuring device, the upper mold and the lower mold are respectively provided with through holes, and the through holes are respectively inserted into the upper portion and the lower portion of the columnar pillar to perform the upper mold and the lower mold. Since the connection is made, the overall height of the apparatus is lowered to reduce the overall thickness of the apparatus, and it is extremely difficult to connect the upper mold and the lower mold by the upper portion and the lower portion of the pillar.

Moreover, the upper mold and the lower mold are formed with through holes through which the pillars can be inserted. Therefore, liquid leakage from an object such as a machine or a device supported by the height adjusting device causes the liquid to flow through the through holes and into the device. It is an inherent problem.

[First technical literature]

[Patent Literature]

[Patent Document 1] JP-A-2006-224230

Here, the present invention is designed in the context of the above-mentioned situation, and the problem to be solved is a level of a structure in which a movable wedge-shaped movable body is interposed between the upper support table and the lower support table. In the measuring device, the rotating shaft support for supporting the rotating shaft that can move the movable body is allowed to rotate without being rotated, and the structure of the guiding mechanism of the movable body is not required to be precisely maintained. The parallelism between the upper side of the upper support table and the lower side of the lower support table, and other problems provide an effective structure for thinning the leveling device, in other words, an effective structure that can reduce its height.

Therefore, the present invention is to solve the above problems, and as exemplified below, suitable embodiments can be obtained in various aspects, and any of the aspects disclosed below can be used in any combination. In addition, the present invention is not limited to the following description of the present invention, and it should be understood that the invention is not limited by the disclosure of the invention.

(1) The present invention is a level measuring device characterized in that a wedge-shaped movable body is interposed between the upper support table and the lower support table to be movable, and the movable body is screwed to the shaft And moving the movable body by the rotation of the rotating shaft, thereby adjusting a distance between the upper support table and the lower support table in an upper and lower direction, wherein the upper support table and the lower support table are formed between The block-shaped rotating shaft support body is configured to be inserted into the rotating shaft to support the rotating shaft and to be freely rotatable, and at both sides of the rotating shaft support body at a right angle to the rotating shaft insertion direction And arranging one of the upper support portion of the rotating shaft support and the inner surface portion of the lower support base to form an engagement convex portion, and the other of the other forms an engagement concave portion to By fitting the engagement projections and the engagement recesses, the rotation shaft support body is held and fixed to the upper support base and the lower support base by both side portions thereof.

(2) The leveling device disclosed in the above aspect (1), wherein the engagement recessed portion is disposed at an arrangement portion of the upper support base and the lower support base of the rotary shaft support, and the rotary shaft support The both side portions constitute the engagement convex portion that can be fitted to the engagement recess.

(3) The leveling device disclosed in the above aspect (2), wherein the upper side of the upper support table and the lower support table are respectively formed with grooves extending in the axial direction of the rotating shaft, and the aforementioned Concave portions respectively extending in the up-and-down direction are formed as the engagement recesses on both side walls of the recess.

(4) The leveling device disclosed in any one of the aspects (1) to (3), wherein the rotating shaft support body has a rectangular block shape, and a central portion thereof is provided with a plug for inserting the rotating shaft. Inserted holes.

(5) The leveling device disclosed in any one of the aspects (3) or (4), wherein the rotating shaft support body has a rectangular block shape and one of the axial axes of the rotating shaft support body The stepped portions are respectively provided on both side portions of the side surface, and the central portion is formed with a projection extending in the vertical direction, and the projections are fitted to the concave portions respectively disposed on the upper support table and the lower support table. Two side walls of the slot.

(6) The leveling device disclosed in the above aspect (5), wherein the upper side support table and the two side walls of the recesses respectively disposed on the lower side support table are respectively formed with protrusions for the shaft support body A fitting fitting recess.

(7) The leveling device disclosed in the above aspect (1), wherein the engaging convex portion is disposed at an arrangement portion of the upper support base and the lower support base of the rotary shaft support, and the rotary shaft support A recessed portion into which the engaging convex portion is fitted is formed on each of the both side surfaces as the engaging recessed portion.

(8) The leveling device disclosed in the above aspect (7), wherein the rotating shaft support has a rectangular block shape, and the two sides of the rotating shaft support body are provided with grooves respectively extending in the up and down direction, and The recesses constitute recesses provided on both sides of the aforementioned shaft support.

Therefore, in the leveling device of the present invention, the shaft support body capable of supporting the rotation shaft in a freely rotatable state has a block shape, and the inner side portions of the upper side support base and the lower side support base are partially concave-convex and fitted. Therefore, the above-mentioned hinge support body is fixed and held on the upper support base and the lower support base at both side portions thereof, so that the rotation of the rotary shaft support body and the vibration of the rotary shaft in the horizontal direction can be completely prevented, so that even the wedge The movable body is not provided with a guiding mechanism, and the movable body can also be moved in a certain direction in the horizontal direction, whereby the thrust load of the rotating shaft can form an equal surface pressure from the upper and lower sides of the movable body, and is effective. It is transmitted to the upper support table and the lower support table to effectively maintain the parallel precision between the upper support and the lower support.

Further, in the leveling device according to the present invention, the connecting portion between the upper support base and the lower support base is formed at both side portions of the rotary shaft support, and the structure is provided at a lower portion of the upper side of the rotary shaft support body. The height between the upper support table and the lower support table is reduced as much as possible, whereby the thickness of the level measuring device as a whole can be reduced.

Moreover, the connecting structure by the fitting of the upper side support base and the lower side support base on the both side portions of the above-mentioned rotating shaft support body is not required to be provided for fixing and holding the rotating shaft support on the upper side support base and the lower side support base. Since the through hole of the body can effectively prevent the liquid from flowing through the through hole and flowing into the inside of the device due to liquid leakage or the like.

Simple illustration

Fig. 1 is an explanatory view showing an example of the level measuring device of the present invention, wherein (a), (b) and (c) are plane explanatory views of the state in which the height of the level measuring device is the lowest, and the right side of (a). Illustration and front explanatory diagram.

Fig. 2 is a cross-sectional explanatory view of the level measuring device shown in Fig. 1, (a) is an AA cross-sectional explanatory view in Fig. 1(a), and (b) is a BB cross-sectional illustration in Fig. 2(a) Figure.

Fig. 3 is an explanatory view showing a state in which the height of the level measuring device shown in Fig. 1 is the largest, and (a), (b) and (c) correspond to (a), (b) and (Fig. 1 respectively). c) Description of the diagram.

Fig. 4 is an explanatory view of a C-C cross section in Fig. 3(a), and corresponds to the explanatory diagram of Fig. 2(a).

Fig. 5 is an explanatory view of the upper support table used in the leveling device shown in Fig. 1, and (a), (b), (c), (d) and (e) are plane explanatory views and front faces, respectively. The explanatory drawings, the bottom surface explanatory drawings, the right side explanatory view of (a), and the left side explanatory drawing of (a).

Fig. 6 is a cross-sectional explanatory view of the upper side support table shown in Fig. 5, and (a) and (b) are respectively an enlarged view of the D-D cross section and an enlarged view of the E-E cross section in Fig. 5(a).

Fig. 7 is an explanatory view showing a lower side support table used in the level measuring device shown in Fig. 1, and (a), (b), (c), and (d) are a plan explanatory view and a front explanatory view, respectively. a) the right side of the drawing and the left side of Fig. (a).

Fig. 8 is a cross-sectional explanatory view of the lower side support table shown in Fig. 7, and (a) and (b) are an enlarged explanatory view of the F-F cross section and an enlarged view of the G-G cross section in Fig. 7(a), respectively.

Fig. 9 is an explanatory view showing a movable body used in the level measuring device shown in Fig. 1, and (a), (b), (c), and (d) are a plan explanatory view and a front explanatory view, respectively. The right side is shown in the figure and the left side is shown in (a), and (e) is the HH section in (a).

Fig. 10 is an enlarged explanatory view showing a rotating shaft and a rotating shaft support used in the level measuring device shown in Fig. 1, (a) a front explanatory view of the rotating shaft, (b), (c), (d) and ( e) A plan explanatory view, a front explanatory view, a right side explanatory view of (c), and a left side explanatory view of (c), respectively, of the rotating shaft support.

Fig. 11 is an enlarged explanatory view showing a state in which the rotating shaft and the rotating shaft support shown in Fig. 10 are assembled, and (a) and (b) are front explanatory views of the assembly and a right side explanatory view of (a). (c) is a cross-sectional explanatory view of II in the above (a).

Fig. 12 is a perspective explanatory view showing a fitting arrangement of a shaft support body to a lower support table in the leveling device shown in Fig. 1.

Fig. 13 is a perspective explanatory view showing a different fitting arrangement of the lower support table and the rotary shaft support in another example of the level measuring device of the present invention.

Fig. 14 is a front enlarged view showing a state in which a spring for elastically connecting the upper support table and the lower support table is provided on the side surface of the level measuring device shown in Fig. 1.

Detailed description of the preferred embodiment

Hereinafter, the structure of the present invention will be described in detail with reference to the preferred embodiments shown in the accompanying drawings, in which FIG.

First, in the first to fourth figures, a representative example of the level measuring device of the present invention is shown in two actuation forms. That is, the first and second graphs show the state in which the height of the level measuring device 10 is the lowest, and the third and fourth graphs show the state in which the height of the level measuring device 10 is the highest. In the above-described drawings, the level measuring device 10 may overlap the upper support table 12 and the lower support table 14 in a state in which the wedge-shaped movable body 16 is interposed between the upper support table 12 and the lower support table 14 and The rotating shaft 18 that has been screwed to the movable body 16 is rotated in a state supported by the block-shaped rotating shaft support 20, and the movable body 16 is moved. Then, by moving the movable body 16 forward and backward between the upper support base 12 and the lower support base 14, the distance (height) between the upper support base 12 and the lower support base 14 can be changed. The lowest height position shown in FIGS. 1 to 2 and the highest height position shown in FIGS. 3 to 4, whereby the machine, the device, and the like which are placed on the level measuring device 10 can be performed in the same level as in the related art. The height adjustment of the predetermined part of the object.

Further, in the above-described level measuring device 10, as shown in Figs. 5 and 6, the upper support table 12 has a substantially rectangular planar shape as a whole, and constitutes a flat surface on which the upper surface 12a is flat, and the lower surface 12b forms a corresponding wedge shape. The inclined surface of the upper surface of the inclined body of the movable body 16 is thinner on one side and thicker on the other side. Next, on the lower surface 12b of the upper support table 12, in order to position the rotating shaft 18 and the rotating shaft support 20 on the inner surface portion to be disposed, on the thick portion of the upper supporting base 12, the extension of the rotating shaft 18 A groove 22 having a predetermined width in a stepped configuration in the width direction and the depth direction is provided in the direction (axial direction) to avoid interference with the rotating shaft 18. Further, the recess 22 is formed on both side walls of the deepest portion of the depth of the opening on the end surface of the upper support table 12 at the same depth as the recess 22, respectively, in the direction perpendicular to the slot (the width direction of the upper support table 12). The rectangular recess 24 is formed, and the recessed portion 24 is located at a corner portion of the end surface side of the support base 12 on the upper side of the opening of the recess 22, and is formed with a predetermined length to form a notch, and the auxiliary recesses 26 and 26 having the same depth as the recess 24 are formed as Mating part.

Further, the lower support table 14 has the same planar configuration and inner surface structure as the upper support table 12 shown in Figs. 5 and 6 as clearly shown in Figs. That is, the lower surface 14b of the side support table 14 having a substantially rectangular planar shape is a flat horizontal surface, and the upper surface 14a thereof is formed with an inclined surface corresponding to the lower surface of the movable body 16. The upper surface 14a of the inner surface of the lower support table 14 is provided in the axial direction of the rotary shaft 18 at a position where the rotary shaft 18 and the rotary shaft support 20 are disposed, similarly to the upper support base 12, and is provided with a predetermined a groove 32 of a stepped structure having a width, and at the same time, the two side walls of the groove 32 are respectively formed with rectangular recesses 34 and 34 extending in a right angle direction of the groove to be positioned on the arrangement portion of the shaft support 20, and further, The concave portions 34 and 34 are located at the corner portions on the end surface side of the support table 14 on the side below the opening of the recess 32, and the auxiliary concave portions 36 and 36 each having a predetermined length are formed as fitting portions at the same depth.

Further, as shown in FIG. 9, the wedge-shaped movable body 16 is formed by the inclined surface which is inclined at the same inclination angle to the horizontal plane, and the upper surface 16a and the lower surface 16b are formed in a substantially rectangular planar shape. A section in which the thickness is gradually reduced from one side to the other side is a wedge-shaped shape. Second, on The center portion of the thin portion of the movable body 16 is provided with a stepped rectangular notch portion 42, and the center portion of the notch portion 42 is formed with a notch inner portion 44 which is cut into the thick portion side. Further, a threaded hole 46 penetrating the movable body 16 is provided on a center line extending from the thick portion of the movable body 16 toward the thin portion, and is opened at the center of the notch inner portion 44, and the threaded hole 46 is snail The screw portion 18a of the rotary shaft 18 described later is incorporated.

Further, the rotating shaft 18 and the block-shaped rotating shaft support 20 which are inserted and supported are shown in Figs. 10(a) and (b) to (e), respectively. Here, as shown in (a), the rotary shaft 18 is composed of a thread portion 18a having a predetermined length and a hexagonal operation portion 18b integrally formed at one end thereof. Next, when the operation portion 18b is rotated by the tool, the rotating shaft 18 can be rotated about its axis. However, in addition to the method of rotating the tool on the peripheral surface of the operation portion 18b, the operation portion 18b can be used. A method in which a central portion forms a hexagonal hole and a tool is inserted into the hole to rotate it. Further, as shown in (b) to (c), the shaft support body 20 has a rectangular block shape as a whole, and is provided with an insertion hole 52 penetrating through the center portion thereof, and the insertion hole 52 is adapted to be inserted into the rotation shaft 18 The threaded portion 18a is free to rotate. Further, on one side of the opening of the insertion hole 52 of the above-mentioned shaft support body 20, step portions 54 and 54 which extend in the vertical direction on both side portions thereof are formed, and the central portion of the equal portion protrudes laterally. The projections 56 are formed to extend in the vertical direction.

Further, the shafts 18 and the shaft support 20 are assembled as follows. That is, as shown in Fig. 11, the thrust bearings 62, 62 and the flat washers 64, 64 are respectively disposed on both sides of the rotary shaft support 20, and the rotary shaft 18 is inserted, and the hexagonal portion 18a of the rotary shaft 18 is screwed into the hexagon. The nut 66 is further welded to the screw portion 18a of the rotating shaft 18 to fix the hexagonal nut 66, that is, the assembly 60 in which the rotating shaft 18 is supported by the rotating shaft support 20 and is rotatable.

Next, the assembly 60 of the rotating shaft 18 and the rotating shaft support 20 is used, and the threaded portion 46 of the rotating shaft 18 is screwed into the threaded hole 46 of the movable body 16 from the side of the notch 42 of the movable body 16 to the movable body. The upper surface 16a side of the upper surface 16a overlaps the lower surface 12a of the upper side support base 12, and the upper surface 14a of the lower side support base 14 is overlapped on the lower surface 16b side of the movable body 16, and the rotary shaft support body 20 is further disposed. The two sides of the axis of the rotating shaft are at right angles and are horizontal portions, and the recesses 24 and 24 provided on the two side walls of the recess 22 of the upper support table 12 and the recess 32 of the lower support table 14 respectively The concave portions 34 and 34 provided on the two side walls are fitted, and the shaft support body 20 is held and fixed to the upper support base 12 and the lower support base 14 by the both side portions thereof, that is, the first to fourth figures are completed. A leveling device 10 of assembled construction.

Further, in the assembly work of the level measuring device 10, the fitting of the both side portions of the shaft support 20 to the recesses 24, 24 of the upper support table 12 and the recesses 34, 34 of the lower support table 14 is as shown in Fig. 12. As shown in the fitting form of the recessed portions 34 and 34 of the lower support base 14, the recessed portions 34 and 34 of the lower support base 14 are fitted to the lower side portions of the side portions of the rotary shaft support 20, respectively, and supported by the rotary shaft. The upper portions of the both side portions of the body 20 are fitted to the recesses 24 and 24 of the upper support table 12. Next, at this time, the projections 56 projecting on the side faces of the rotary shaft support 20 are respectively provided to the auxiliary recesses 26 provided in the openings of one of the recesses 24, 24, 34, 34 of the upper support table 12 and the lower support table 14. The 26, 36, 36 are fitted to prevent the movement of the shaft support 20 and even the shaft 18 toward the width direction of the level measuring device 10. In particular, the fitting of the projections 56 and the auxiliary recesses 26, 26, 36, 36, as in the present embodiment, is effective when there is a gap between the recesses 24, 24, 34, 34 and the side of the shaft support 20 . Further, the grooves 22 and 32 of the stepped structure provided on the inner surface (inner side) of the upper support base 12 and the lower support base 14 are arranged to prevent the rotation shaft 18 from being disposed on the upper support base 12 and the lower support base. After 14, the recessed portion is provided in contact with (interference).

Therefore, in the level measuring device 10 of the above-described configuration, the block-shaped shaft support body 20 is fixed by the concave-convex fitting of the upper side support base 12 and the lower side support base 14 at both side portions thereof, so that the above-mentioned shaft support body 20 will be completely Since the rotation does not occur, and even if the rotating shaft 18 inserted into the rotating shaft support 20 is rotated to move in and out (retract) the movable body 16, the rotating shaft 18 does not vibrate in the horizontal direction, so that the movable body 16 can be maintained at The horizontal direction moves in a certain direction, whereby the upper surface 12a of the upper support table 12 and the lower surface 14b of the lower support table 14 maintain a high degree of parallelism.

That is, in the level measuring device 10, the rotating shaft 18 is rotated to cause the movable body 16 to be outwardly retracted, that is, as shown in Figs. 1 and 2, the height is the lowest, or the rotating shaft 18 is opposite to the above. The rotation of the direction allows the movable body 16 to enter between the upper support table 12 and the lower support table 14, and as shown in FIGS. 3 and 4, the highest height is formed. At this time, the hinge support of the rotary shaft 18 is supported. 20, because the concave and convex portions of the both sides are not rotated, and the rotating shaft 18 is fixed and held in a state where the axial direction thereof is maintained constant, so that there is no need to separately provide the movable body 16 for guiding in a certain direction. The features of the guides, therefore, can maintain parallel accuracy, and can be effectively simplified in device construction.

Further, according to the structure of the above-described level measuring device 10, the rotating shaft support 20 supporting the rotating shaft 18 is fitted and fixed by the upper side support base 12 and the lower support base 14 at both side portions thereof, so that it is supported by conventional means. The upper portion of the columnar pillar of the rotating shaft and the lower portion are connected to the upper support base and the lower support base, and the height portions of the upper connecting portion and the lower connecting portion of the pillar are at least omitted to reduce the height thereof. It is possible to lower the overall height of the level measuring device 10.

Further, in the leveling device 10 of the above-described embodiment, as can be seen from the fifth and seventh figures, the upper support table 12 and the lower support table 14 are not provided with through holes at all, and in other words, the upper support table 12 and the lower side support are connected. When the table 14 and the shaft support 20 are provided, it is not necessary to provide through holes for the upper support table 12 and the lower support table 14, and therefore it is possible to effectively prevent the liquid from flowing into the leveling device 10.

The present invention has been described in detail with reference to the preferred embodiments of the present invention.

For example, in the above example, the movable body 16 that is moved by the screwing of the rotating shaft 18 has a double-sided wedge shape in which the upper surface 16a and the lower surface 16b respectively form an inclined surface, but the upper surface 16a and the upper surface 16a can also be Only one of the following 16b forms an inclined surface and is formed as a one-sided wedge. Next, in the case of the above-described one-sided wedge shape, only the inclined surface corresponding thereto is formed on the opposing surface of the upper side support table 12 or the lower side support table 14 which is provided on the side of the inclined surface which is provided on the movable body 16.

Further, in the illustrated embodiment, the both sides of the rotating shaft support 20 serve as the engaging convex portions, and the grooves 22 and 32 provided on the inner surface portions of the upper support base 12 and the lower support base 14 are provided. The concave portions 24, 24, 34, and 34 on both side portions constitute the engagement concave portion, but the engagement concave portion may be formed on the side of the rotation shaft support 20, and the inner surface portions of the upper support base 12 and the lower support base 14 may be formed on the opposite side. A snap protrusion is formed on the upper surface.

Specifically, as exemplified in Fig. 13, square grooves 58 and 58 each extending in the vertical direction are formed on both side portions of the shaft support 20' as the engagement recesses, and are formed from the lower support table 14'. The two side walls of the stepped groove 22' provided on the inner surface portion of the rotating shaft support body 20' are respectively protruded by a predetermined length, and the protrusions 28 and 28 which are opposite to the planar rectangular shape are used as the engaging convex portions. .

Then, the protrusions 28 and 28 provided on the both side walls of the recess 22' of the lower support table 14' are respectively concave-convex-fitted to the square grooves 58 and 58 provided on the both side portions of the rotary shaft support 20'. The shaft support 20' can be fixed and held on the lower support 14', and the upper support (12) side can also be used to rotate the shaft support 20' in the same configuration as the lower support 14'. The concave-convex fitting is fixed and held thereon, and the support of the rotating shaft 18 that has been inserted into the insertion hole 52' of the rotating shaft support 20' can be efficiently performed as in the above-described embodiment.

Further, the leveling device 10 of the example includes a structure in which the upper support table 12 and the lower support table 14 are coupled to each other by the concave-convex fitting of the rotary shaft support 20, so that the upper support table 12 is held by the upper support table 12 If it is lifted, only the upper support table 12 may be separated. Therefore, it is preferable to connect the upper support base 12 and the lower support base 14 by a more suitable linkage mechanism. For example, as shown in FIG. 14, the upper support platform should be 12 and the two sides of the lower support table 14 are respectively connected by an appropriate number of claw springs 70. Here, the claw spring 70 has a W-shape, and the two springs have a structure in which the upper support table 12 and the lower support table 14 are screwed to each other at the respective end portions.

Further, in the assembly 60 shown in Fig. 11, the projections 56 provided on the rotary shaft support 20 are assembled to be positioned on the side of the operation portion 18b of the rotary shaft 18, but may be assembled in the threaded portion of the rotary shaft 18 in the opposite direction. 18a free end side. At this time, the auxiliary recesses 26, 26, 36, and 36, which are fitting portions of the projections 56, are formed at the corners of the inside of the recesses 22, 32 of the openings of the recesses 24, 24, 34, 34.

Further, the fitting portion of the projection 56 which is fitted to the shaft support 20 is not limited to the illustrated auxiliary recesses 26, 26, 36, 36, and the side walls of the recesses 22, 32 may be utilized. An inner protruding portion may be integrally provided on the side wall surfaces of the grooves 22 and 32 to be used as a fitting portion.

Further, the upper side support table 12, the lower side support table 14, the movable body 16 and the like of the level measuring device 10 are generally used, but cast iron products are generally used. However, the present invention is not limited thereto, and other metal products or processed products can be used.

Further, although illustration is omitted, in the leveling device 10 exemplified, a large gap is formed between the upper support table 12 and the lower support table 14 between the thin portions formed by the individual inclined surfaces. Therefore, the lower side and the upper part of the upper side support base 12 and the lower side support base 14 are integrally provided, and the gap between the upper side support base 12 and the lower side support base 14 is narrowed as much as possible in the level measurement. The operation of the device 10 is advantageous.

Further, although not individually enumerated, the present invention can be modified in various ways, modifications, improvements, etc. based on the technical knowledge of the present invention. However, these embodiments are not included in the scope of the present invention. The scope of the invention is self-evident.

10. . . Leveling device

12. . . Upper support desk

12a. . . Above

12b. . . below

14. . . Lower side support

14a. . . Above

14b. . . below

14’. . . Lower side support

16. . . Movable body

16a. . . Above

16b. . . below

18. . . Rotating shaft

18a. . . Thread part

18b. . . Operation department

20. . . Shaft support

20’. . . Shaft support

22,22’. . . Groove

24,34. . . Concave

26. . . Auxiliary recess

28. . . Protrusion

32. . . Groove

36. . . Auxiliary recess

42. . . Notch

44. . . Gap inside

46. . . Threaded hole

52. . . Insert hole

52’. . . Insert hole

54. . . Step

56. . . Protrusion

58. . . Square slot

60. . . Assembly

62. . . Thrust bearings

64. . . Flat gasket

66. . . Hex nut

70. . . Claw spring

Fig. 1 is an explanatory view showing an example of the level measuring device of the present invention, wherein (a), (b) and (c) are plane explanatory views of the state in which the height of the level measuring device is the lowest, and the right side of (a). Illustration and front explanatory diagram.

Fig. 2 is a cross-sectional explanatory view of the level measuring device shown in Fig. 1, (a) is an AA cross-sectional explanatory view in Fig. 1(a), and (b) is a BB cross-sectional illustration in Fig. 2(a) Figure.

Fig. 3 is an explanatory view showing a state in which the height of the level measuring device shown in Fig. 1 is the largest, and (a), (b) and (c) correspond to (a), (b) and (Fig. 1 respectively). c) Description of the diagram.

Fig. 4 is an explanatory view of a C-C cross section in Fig. 3(a), and corresponds to an explanatory view of Fig. 2(a).

Fig. 5 is an explanatory view of the upper support table used in the leveling device shown in Fig. 1, and (a), (b), (c), (d) and (e) are plane explanatory views and front faces, respectively. The explanatory drawings, the bottom surface explanatory drawings, the right side explanatory view of (a), and the left side explanatory drawing of (a).

Fig. 6 is a cross-sectional explanatory view of the upper side support table shown in Fig. 5, and (a) and (b) are respectively an enlarged view of the D-D cross section and an enlarged view of the E-E cross section in Fig. 5(a).

Fig. 7 is an explanatory view showing a lower side support table used in the level measuring device shown in Fig. 1, and (a), (b), (c), and (d) are a plan explanatory view and a front explanatory view, respectively. a) the right side of the drawing and the left side of Fig. (a).

Fig. 8 is a cross-sectional explanatory view of the lower side support table shown in Fig. 7, and (a) and (b) are an enlarged explanatory view of the F-F cross section and an enlarged view of the G-G cross section in Fig. 7(a), respectively.

Fig. 9 is an explanatory view showing a movable body used in the level measuring device shown in Fig. 1, and (a), (b), (c), and (d) are a plan explanatory view and a front explanatory view, respectively. The right side is shown in the figure and the left side is shown in (a), and (e) is the HH section in (a).

Fig. 10 is an enlarged explanatory view showing a rotating shaft and a rotating shaft support used in the level measuring device shown in Fig. 1, (a) a front explanatory view of the rotating shaft, (b), (c), (d) and ( e) A plan explanatory view, a front explanatory view, a right side explanatory view of (c), and a left side explanatory view of (c), respectively, of the rotating shaft support.

Fig. 11 is an enlarged explanatory view showing a state in which the rotating shaft and the rotating shaft support shown in Fig. 10 are assembled, and (a) and (b) are front explanatory views of the assembly and a right side explanatory view of (a). (c) is a cross-sectional explanatory view of II in the above (a).

Fig. 12 is a perspective explanatory view showing a fitting arrangement of a shaft support body to a lower support table in the leveling device shown in Fig. 1.

Fig. 13 is a perspective explanatory view showing a different fitting arrangement of the lower support table and the rotary shaft support in another example of the level measuring device of the present invention.

Fig. 14 is a front enlarged view showing a state in which a spring for elastically connecting the upper support table and the lower support table is provided on the side surface of the level measuring device shown in Fig. 1.

10. . . Leveling device

12. . . Upper support desk

14. . . Lower side support

16. . . Movable body

18. . . Rotating shaft

20. . . Shaft support

twenty two. . . Groove

32. . . Groove

34. . . Concave

42. . . Notch

44. . . Gap inside

46. . . Threaded hole

Claims (10)

A level measuring device is characterized in that a wedge-shaped movable body is interposed between an upper support stand and a lower support stand to be movable, and the movable body is screwed to the rotating shaft so as to be rotated by the rotating shaft The movable body moves to adjust a distance between the upper support table and the lower support table, wherein a block-shaped hinge support is disposed between the upper support table and the lower support table, and the rotating shaft The support system can be inserted into the rotating shaft to support the rotating shaft and be freely rotatable, and can be disposed at two sides in a direction perpendicular to the direction in which the rotating shaft is inserted into the rotating shaft support body, and the rotating shaft support can be disposed. One of the upper support portion and the inner surface portion of the lower support base forms an engagement projection, and the other of the other forms an engagement recess to form the engagement projection and the card The fitting of the recessed portion allows the shaft support body to be held and fixed to the upper support base and the lower support base at both side portions thereof. The leveling device according to the first aspect of the invention, wherein the engaging recessed portion is disposed at an arrangement portion of the upper support base and the lower support base of the rotating shaft support, and both sides of the rotating shaft support constitute The engaging convex portion to which the engagement recess can be fitted. According to the leveling device of claim 2, the opposite inner surface of the upper support table and the lower support table are respectively formed with grooves extending in the axial direction of the rotating shaft, and the two side walls of the groove Each of the upper portions is formed with a concave portion extending in the vertical direction as the engagement concave portion. The level measuring device according to any one of claims 1 to 3, wherein the shaft support body has a rectangular block shape, and a central portion is provided with an insertion hole through which the rotation shaft can be inserted. According to the leveling device of claim 3, the rotating shaft support body has a rectangular block shape, and the stepped portions respectively disposed on both sides of the one side of the axial direction of the rotating shaft support body of the rotating shaft support body Further, the central portion is formed with a projection extending in the vertical direction, and the projection is fitted to both side walls of the recesses disposed on the upper support base and the lower support. In the leveling device of claim 4, the rotating shaft support body has a rectangular block shape, and is provided with a stepped portion respectively disposed on both sides of a surface of one side of the axial direction of the rotating shaft of the rotating shaft support body. Further, a protrusion extending in the vertical direction is formed in the center portion, and the protrusions are fitted to both side walls of the grooves respectively disposed on the upper support table and the lower support table. According to the leveling device of claim 5, the two side walls of the groove provided on the upper support table and the lower support table are respectively formed with fitting recesses for the protrusions of the rotating shaft support body. . According to the leveling device of claim 6, the two side walls of the groove provided on the upper support table and the lower support table are respectively formed with fitting recesses for the protrusions of the rotating shaft support body. . In the leveling device according to the first aspect of the invention, the engaging convex portion is disposed on each of the upper support table and the arrangement of the rotating shaft support of the lower support table, and the both sides of the rotating shaft support Recessed portions into which the engagement convex portions are fitted are formed as the engagement concave portions, respectively. In the leveling device of claim 9, the rotating shaft support body has a rectangular block shape, and the two sides of the rotating shaft support body are respectively provided with grooves extending in the up and down direction, and the grooves are formed by the grooves. a recess on both sides of the aforementioned shaft support.