Slope gradient indicator

Abstract

To provide a slope gradient indicating device with an easy-to-read display and easy-to-adjust a bucket to a set angle. [Solution] A slope gradient indicator 1 that indicates the set angle of a bucket attached to heavy machinery when shaping a slope with the bucket comprises: a main body 2 attached to the bucket, a rotating body 7 attached to the main body 2 so as to be rotatable about a horizontal axis 6, a weight 21 attached to the rotating body 7, a rotating body-side indicator 25 attached to the outer periphery of the rotating body 7 and visible from the driver's seat of the heavy machinery, and a main body-side indicator 34 that is fixed to the main body 2 and visible from the driver's seat, and indicates the set angle of the bucket by aligning it with the rotating body-side indicator 25. Unlike numbers, the bucket can be easily adjusted to the set angle by aligning the indicators 25, 34 that are visible from the driver's seat.

Description

[Technical Field]

[0001] The present invention relates to a slope gradient indicator. [Background technology]

[0002] Conventionally, when cutting a slope with a bucket attached to the tip of the arm of heavy machinery, an indicating device for indicating the angle of the bucket or the like has been provided, which consists of a spherical shell that is transparent entirely or in part fixed to the machine body, filled with an appropriate amount of liquid, and a spherical float placed inside the spherical shell, with the center of buoyancy and the center of gravity of this float being different so that it always maintains a constant attitude, and is configured so that the buoyancy itself does not press against the upper wall of the case when floating, and an inclination angle reading device is provided on the spherical shell and the buoyancy, making it possible to read the machine body inclination angle (for example, Patent Document 1).

[0003] The above-mentioned vehicle tilt angle reading device can read the angle of the bucket by reading the angle between an isometric baseline on the spherical part that maintains horizontality and a horizontal baseline on the spherical shell attached to the bucket. However, since the reading device must be installed in the direction of the bucket's tilt and the isometric baseline and horizontal baseline are located on the left and right sides of the reading device, it is difficult to read from the driver's seat behind the bucket.

[0004] In response to this, a slope cutting angle meter for a backhoe bucket has been proposed (for example, Patent Document 2), in which an angle display section is installed across the periphery of a pair of semicircular side plates, the middle of which is pivoted on the center line of one of the semicircular side plates, a weight is attached to the lower end, the upper end is bent at an approximately right angle and a weight is attached to the lower end, and the upper end is bent at an approximately right angle and has a scale section that forms an angle indicating section, and the angle meter body is installed upright on the base end surface of the bucket of the backhoe bucket along the digging angle direction.

[0005] In the above-mentioned angle meter, the angle indicator points to zero degrees due to a weight, and a semicircular side plate provided at the top of the angle meter body has a scale that displays the tilt angle of the angle meter body.The position of the scale indicated by the angle indicator can be seen from the driver's seat behind the bucket, but there is a problem that it is difficult for a driver at the rear who is away from the bucket to see because it is necessary to read the small numbers on the scale indicated by the plate-shaped angle indicator.

[0006] In addition, in the above-mentioned angle cut goniometer, a weight is attached to the bottom of the angle indicator so that the angle indicator is directly above, but this requires processing a special weight and attaching it by welding or the like, which makes installation and assembly work less easy.

[0007] Also, as shown in Figure 6, there is a heavy machine 101 with a bucket 103 attached to the tip of a hoisting arm 102 at the front end, the angle of which can be changed by a hydraulic cylinder 102A, an attachment pipe 105 attached to the top surface 104 of the bucket 103, a main body 107 of a disk-shaped slope gradient indicator 106 attached to this attachment pipe 105, and a scale (not shown) such as numbers indicating the angle of the bottom surface 108 of the bucket 103 attached to the outer periphery of this main body 107, and a pendulum-type indicator 109 using a weight that points to this scale, and the bucket 103 can be used to cut and fill a slope 110.

[0008] In the slope gradient indicator 106, the main body 107 can be installed at a high position by attaching it to the mounting pipe 105 protruding from the bucket 103. However, since it is necessary to read the scale, which is the fine numbers indicated by the indicator 109, it is difficult to read the angle from the driver's seat, as with other conventional technologies. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Japanese Utility Model Application Publication No. 49-144003 [Patent Document 2] Utility Model Registration No. 3050075 Summary of the Invention [Problem to be solved by the invention]

[0010] Therefore, the present invention aims to solve the above problems by providing a slope gradient indicator device that has an easy-to-read display and makes it easy to adjust the bucket to a set angle, and also aims to provide a slope gradient indicator device that can easily be fitted with a weight. [Means for solving the problem]

[0011] The invention of claim 1 is a slope gradient indicating device that indicates the set angle of a bucket attached to a heavy machine when shaping a slope with the bucket, and is characterized by comprising: a main body attached to the bucket; a rotating body attached to the main body so as to be rotatable around a horizontal axis; a weight attached to the rotating body; a rotating body side indicating unit attached to the outer periphery of the rotating body and not visible from the driver's seat of the heavy machine; and a main body side indicating unit that is visible from the driver's seat and fixed to the main body, and indicates the set angle of the bucket by aligning it with the rotating body side indicating unit.

[0012] The invention of claim 2 is characterized in that the main body side instruction part is oriented horizontally and has a shape formed with a sharp point on the rotating body side, and the rotating body side instruction part is oriented horizontally and has a shape formed with a sharp point toward the tip of the main body side instruction part, and at the set angle of the bucket, the tips of the main body side instruction part and the rotating body side instruction part are lined up facing each other.

[0013] The invention of claim 3 is characterized in that the main body is integrally provided with a pair of left and right rotating body mounting sections that are arranged to sandwich the rotating body, and a connecting section that connects the upper parts of the pair of left and right rotating body mounting sections, the horizontal shaft is provided between the pair of left and right rotating body mounting sections, the rotating body is rotatably provided by this horizontal shaft, a display surface section is attached to one of the pair of left and right rotating body mounting sections and protrudes outward to the left or right, the main body side indicator section is provided on the dark colored display surface section, the rotating body side indicator section is provided on the dark colored outer peripheral surface of the rotating body, the rotating body side indicator section and the main body side indicator section are light colored, the maximum width in the vertical direction of the rotating body side indicator section and the main body side indicator section is 15 mm or more, and the length of the main body side indicator section is at least twice the length of the rotating body side indicator section.

[0014] The invention of claim 4 is characterized in that the weight comprises a left-right screw rod inserted into the rotating body and left and right nuts threaded onto the left and right sides of the screw rod, and these left and right nuts sandwich the rotating body from the left and right to fix the screw rod to the rotating body. [Effects of the Invention]

[0015] According to the configuration of claim 1, the rotating body is positioned at a reference position where the weight is below the horizontal axis, thereby positioning the rotating body side indicator provided on the rotating body, and by aligning the main body side indicator with this rotating body side indicator, the bucket can be adjusted to the set angle.In this way, unlike using only numbers, the bucket can be adjusted to the set angle by aligning indicators that are visible from the driver's seat.

[0016] According to the configuration of claim 2, by aligning the indicators, which are horizontally pointed figures, with each other, the bucket can be easily adjusted to the set angle.

[0017] According to the configuration of claim 3, when aligning the main body-side indicator with the rotator-side indicator with the rotator-side indicator positioned by the weight, the main body-side indicator is provided on a dark-colored display surface and the rotator-side indicator is provided on the dark-colored outer peripheral surface of the rotator, making the light-colored and wide indicators easier to see, and making it easy to visually align the indicators while adjusting the angle of the bucket. Also, by providing the display surface protruding outward to the left or right from one of the pair of left and right rotator mounting parts, the display surface can be made wide, and by displaying on this wide display surface a main body-side indicator with a maximum vertical width of 15 mm or more and a length at least twice the length of the rotator-side indicator, visibility can be greatly improved.

[0018] According to the configuration of claim 4, a screw rod such as a double-threaded screw rod or a bolt can be inserted into the rotating body and nuts can be screwed onto the left and right sides of the screw rod, thereby easily attaching a weight to the rotating body. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is a perspective view showing a slope gradient indicator according to a first embodiment of the present invention; [Figure 2] FIG. 10 is a perspective view of the same as above, in which the tips of the main body side support portion and the rotating body side support portion are arranged facing each other. [Figure 3] FIG. 10 is a perspective view of the first embodiment in a state where the tips of the main body side support portion and the rotating body side support portion are separated from each other. [Figure 4] FIG. 10 is a plan view of the main body in the mounted state, with the mounting pipe in cross section. [Figure 5] FIG. [Figure 6] FIG. 10 is a perspective view showing a conventional slope gradient indicator. DETAILED DESCRIPTION OF THE INVENTION

[0020] Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that the embodiments described below do not limit the content of the present invention described in the scope of the utility model registration. Furthermore, not all of the configurations described below are necessarily essential requirements for the present invention. [Example]

[0021] Figures 1 to 5 show a first embodiment of the present invention. Note that the same reference numerals will be used to denote the same parts as those in Figure 6, which shows the prior art. As shown in the figures, the slope gradient indicator 1 comprises a main body 2 attached to a bucket 103 at the end of a derricking arm 102 of a heavy machine 101, and the bucket 103 is attached to the end of the derricking arm 102 so that its angle can be adjusted by a hydraulic cylinder 102A, and work on the slope 110 is performed by aligning its bottom surface 108 with the angle of the slope 110, which is the set angle. Note that the bucket 103 has an excavation blade on the rear side (the driver's seat side, right side in Figure 1).

[0022] In this example, as shown in FIG. 6, the heavy equipment 101 is placed on the upper side of the slope 110, and work is performed on the slope 110 that is inclined obliquely downward when viewed from the heavy equipment 101 side.

[0023] The main body 2 is integrally provided with a pair of left and right rotating body mounting portions 3, 4 and a connecting portion 5 that connects the upper parts of the pair of left and right rotating body mounting portions 3, 4, and is made by bending a metal plate material into a roughly inverted U shape with an open bottom. In addition, a horizontal shaft 6 serving as a horizontal shaft in the left-right direction is provided between the lower parts of the pair of left and right rotating body mounting portions 3, 4, and a rotating body 7 made of wheels is rotatably attached to the main body 2 by this horizontal shaft 6, and the rotating body 7 is disposed between the lower parts of the pair of left and right rotating body mounting portions 3, 4.

[0024] The slope gradient indicating device 1 of this example uses a caster 10 that includes a metal main body 2 and a rotating body 7 that is rotatably attached to the main body 2 by a horizontal shaft 6.

[0025] As shown in Figure 4 and other figures, the main body 2 is provided with a coupler 11 as an attachment means for attaching the main body 2 to the bucket 103, and an L-shaped attachment member 18 is fixed to the upper part of the other rotating body attachment portion 4 and the upper surface of the connecting portion 5, and the coupler 11 is attached to the attachment member 18, and the coupler 11 is attached to the main body 2.

[0026] An attachment pipe 105 serving as an attachment receiving portion is protruded from an upper surface 104 of the bucket 103, and the coupler 11 is detachably attached to this attachment pipe 105.

[0027] The mounting pipe 105 is arranged perpendicular to the bottom surface 108 of the bucket 103, and when the main body 2 is attached to the mounting pipe 105 using the coupler 11, the bottom surface 108, the connecting portion 5, and the horizontal axis 6 become parallel.

[0028] As shown in Figure 4 and other figures, coupler 11 comprises one arm 13 and another arm 14 whose base ends are connected by a pivot 12 so as to be able to open and close, and one arm 13 is fixed to the mounting member 18. A male threaded rod 16 is rotatably connected to the tip of one arm 13 by a vertical pivot 15, and a locking portion 14K is provided at the tip of the other arm 14 to lock onto a nut 17 threaded onto the male threaded rod 16. By clamping an attachment pipe 105 or the like between one arm 13 and another arm 14 and tightening the nut 17, coupler 11 can be fixed to the attachment pipe 105.

[0029] Furthermore, a weight 21 is provided on the rotating body 7 at a position separated from the horizontal shaft 6. This weight 21 is formed by drilling a through hole (not shown) in the hub portion 8 of the rotating body 7, inserting a bolt 22 as a threaded rod into this through hole, screwing a plurality of nuts 23, 23, ... onto both ends of the bolt 22, and fastening the hub portion 8 with the left and right nuts 23, 23, thereby fixing the bolt 22 to the hub portion 8.

[0030] In this example, the bolt 22 has a hexagonal head 22T, but a fully threaded or double-threaded screw rod may also be used. In this example, a plurality of nuts 23 are provided on the left and right sides of the hub portion 8, and although one nut 23 may be used on each side, it is preferable to use three nuts 23, 23, 23 on the right side to achieve a balance between the left and right, as in the example.

[0031] The rotating body 7 is provided with a tire 9 on the outer periphery of a hub portion 8, and the tire 9 is made of a black material or the outer peripheral surface 9G of the tire 9 is painted black, and a white main body side support portion 34 is provided on this outer peripheral surface 9G. The rotating body side support portion 25 is a horizontally facing triangular figure with its tip facing to the right, which is one of the left and right sides, and is located at a position where the weight 21 is directly below the horizontal shaft 6, and in this example, above the horizontal shaft 6.

[0032] A bracket 31 (Figs. 2 and 3) made of a metal plate bent into an approximately L-shape is attached to the rotating body mounting part 4 on the right side of the main body 2, and this bracket 31 integrally comprises a fixing part 32 that is fixed to the outer surface of the rotating body mounting part 4, and a display surface part 33 that is long in the left-right direction and faces the driver's seat on the front side of the main body 2.

[0033] The rear surface of this display surface 33 on the driver's seat side is painted black, and a white main body side indicator 34 is provided on this black display surface 33. This main body side indicator 34 is a figure that is oriented sideways and pointed toward the tip of the rotating body side indicator 25.

[0034] The rotating body side instruction part 25 is a figure that is oriented horizontally and is formed sharply toward the tip of the left main body side instruction part 34, and at the set angle of the bucket 103, the tip sides of the main body side instruction part 34 and the rotating body side instruction part 25 are lined up facing each other.

[0035] Explaining this with reference to Figures 2 and 3, Figure 3 shows that bottom surface 108 of bucket 103 is in a horizontal state, and an imaginary line (not shown) that is perpendicular to the center line of horizontal shaft 6 and the center line of weight 21 and connects these center lines is perpendicular to bottom surface 108, and the angle of bucket 103 is adjusted from here, and when the tip ends of main body side support part 34 and rotating body side support part 25 are lined up facing each other as shown in Figure 2, the tip side (rear end side) of bottom surface 108 of bucket 103 is lifted, and bottom surface 108 of bucket 103 becomes the inclination angle of slope 110, which is the set angle.

[0036] As shown in Figures 1 and 4, the display surface 33 is disposed diagonally so that the connecting portion 5 is in a horizontal position and the upper edge of the display surface 33 is positioned forward of the lower edge and faces the driver's seat, making it easy to see from the driver's seat at an angle above.

[0037] The main body side support portion 34 has a wide portion 35 of a constant width on the right side, which is the base end side, and is equipped with a triangular tip portion 36 at the tip of this wide portion 35, the vertical width of the wide portion 35 being 15 mm or more, the main body side support portion 34 being longer in the left-right direction than the rotatable body side support portion 25, and having a length of at least twice the length of the rotatable body side support portion 25.

[0038] As described above, the outer periphery of the rotating body 7 and the display surface 33 are a dark black color, while the rotating body-side indicator 25 and the main body-side indicator 34 are a light color. The dark color is not limited to black and may be, for example, gray, dark blue, dark brown, dark purple, navy blue, dark green, etc., and the light color is not limited to white and may be, for example, milky white, yellow, silver, etc. For the sake of explanation, cross-hatching is shown only on the black portions of the outer periphery of the rotating body 7 and the display surface 33 in Fig. 2, and cross-hatching is omitted in other drawings.

[0039] 5, a notch 41 that protrudes upward is provided on the lower edge of the fixing part 32, and the weight 21 is housed in this notch 41, thereby enabling the rotating body 7 to rotate angularly within a predetermined range. In other words, the rotating body 7 can rotate angularly until the weight 21 abuts against the edge of the notch 41.

[0040] Next, we will explain one example of how to use the slope gradient indicator 1. As shown in Figures 1 and 3, when viewed from the driver's seat, if the main body indicator 34 is visible below the rotating body indicator 25, the front side of the bottom part 108 of the bucket 103 is away from the slope 110, and from this point, the derricking arm 102 and hydraulic cylinder 102A are operated to change the angle of the bucket 103 so that the front side of the bottom part 108 approaches the slope 110 and the rear side of the bottom part 108 is away from the slope 110, and the tips of both indicators 25, 34 are lined up facing each other, as shown in Figure 2, and the bucket 103 can be set at the set angle.

[0041] In this case, the black and white indicators 25, 34 are easy to see from the driver's seat, and the shape and relative positions of the indicators 25, 34 make it possible to determine whether the bucket 103 is facing perpendicularly, making it easy to adjust the angle of the bucket 103.

[0042] As described above, in this embodiment, corresponding to claim 1, the slope gradient indicating device 1 indicates the set angle of the bucket 103 when forming a slope 110 with the bucket 103 attached to the heavy machine 101, and includes a main body 2 attached to the bucket 103, a rotating body 7 attached to the main body 2 so as to be rotatable about a horizontal axis 6 which is a transverse axis, a weight 21 attached to the rotating body 7, a rotating body side indicating unit 25 attached to the outer periphery of the rotating body 7 and visible from the driver's seat of the heavy machine 101, and a rotating body side indicating unit 25 fixed to the main body 2 and visible from the driver's seat, which is aligned with the rotating body side indicating unit 25. and a main body-side indicator 34 that indicates the set angle of bucket 103 by this, so that rotating body 7 is positioned at a reference position where weight 21 is below horizontal axis 6, thereby positioning rotating body-side indicator 25 provided on rotating body 7, and by aligning main body-side indicator 34 with rotating body-side indicator 25, bucket 103 can be adjusted to the set angle.In this way, unlike when using only numbers, bucket 103 can be adjusted to the set angle by aligning indicators 25, 34 that are visible from the driver's seat.

[0043] Thus, in this embodiment, corresponding to claim 2, the main body side instruction part 34 is a figure oriented horizontally and formed with a sharp point on the rotating body 7 side, and the rotating body side instruction part 25 is a figure oriented horizontally and formed with a sharp point toward the tip of the main body side instruction part 34, and at the set angle of the bucket 103, the tips of the main body side instruction part 34 and the rotating body side instruction part 25 are lined up facing each other, so that by aligning the instruction parts 25, 34, which are horizontally oriented and have sharp points, the bucket 103 can be easily adjusted to the set angle.

[0044] As described above, in this embodiment, corresponding to claim 3, the main body 2 is integrally provided with a pair of left and right rotating body mounting parts 3, 4 that are disposed on either side of the rotating body 7, and a connecting part 5 that connects the upper parts of the pair of left and right rotating body mounting parts 3, 4, a horizontal shaft 6 is provided between the pair of left and right rotating body mounting parts 3, 4, and the rotating body 7 is rotatably provided by this horizontal shaft 6, a display surface part 33 is attached to one of the pair of left and right rotating body mounting parts 3, 4 so as to protrude outward to the left or right, a main body side indicating part 34 is provided on the dark colored display surface part 33, a rotating body side indicating part 25 is provided on the dark colored outer peripheral surface 9G of the rotating body 7, the rotating body side indicating part 25 and the main body side indicating part 34 are light colored, The maximum vertical width of the side indicator 25 and the main body side indicator 34 is 15 mm or more, and the length of the main body side indicator 34 is at least twice the length of the rotating body side indicator 25.Therefore, when aligning the main body side indicator 34 with the rotating body side indicator 25 after the rotating body side indicator 25 has been positioned by the weight 21, the main body side indicator 34 is provided on the dark display surface 33 and the rotating body side indicator 25 is provided on the dark outer peripheral surface 9G of the rotating body 7, so the bright and wide indicators 25, 34 are easier to see, and it is easy to visually align the indicators 25, 34 while adjusting the angle of the bucket 103. Furthermore, by providing the display surface 33 to protrude outward to the left or right from one of the pair of left and right rotating body mounting portions 3, 4, the display surface 33 can be made wider, and by displaying the main body side indicator 34 on this wide display surface 33, which has a maximum width in the vertical direction of 15 mm or more and a length at least twice the length of the rotating body side indicator 25, visibility can be greatly improved.

[0045] Thus, in this embodiment, corresponding to claim 4, the weight 21 comprises the bolt 22, which is a threaded rod in the left-right direction, inserted into the rotating body 7, and left and right nuts 23, 23 threaded onto the left and right sides of the bolt 22, and these left and right nuts 23, 23 sandwich the rotating body 7 from the left and right and fix the bolt 22 to the rotating body 7.Therefore, the weight 21 can be easily attached to the rotating body 7 by inserting a threaded rod such as a double-threaded threaded rod or the bolt 22 into the rotating body 7 and screwing the nuts 23, 23 onto the left and right sides of the bolt 22.

[0046] The present invention is not limited to the present embodiment, and various modifications are possible within the scope of the present invention. For example, although the triangular shape of the display unit in the embodiment is an isosceles triangle, a scalene triangle may also be used. Furthermore, the slope gradient indicator device can also be used when a heavy machine is placed below a slope and working on a slope that slopes diagonally upward as viewed from the heavy machine. In this case, the rotating unit indicator is located below the horizontal axis of the rotating unit with the weight directly below it. When the bottom of the bucket is horizontal, the main unit indicator is located above the rotating unit indicator. Contrary to the first embodiment, the display screen is configured so that its upper edge tilts forward and faces the driver's seat. When the angle of the bucket is adjusted so that the main unit indicator is aligned with the rotating unit indicator, the front of the bucket rises, allowing the bottom to be aligned with the desired slope angle. The threaded rod used for the weight may be a full-threaded or double-threaded threaded rod. Furthermore, in claim 1, the indicator may be an oval shape that is elongated horizontally. [Explanation of symbols]

[0047] 1. Slope gradient indicator 2 Main unit 3,4 Rotating body mounting part 5 Connecting part 6 Horizontal axis (horizontal axis) 7 Rotating body 9G outer surface 21 Weight 22 bolts (threaded rods) 23 Nut 25 Rotating body side indicator 33 Display section 34 Main unit indicator 35 Wide section 36 Tip 101 Heavy Machinery 103 Bucket 108 Bottom part 110 Slope

Claims

1. A slope gradient indicating device that indicates the setting angle of a bucket when forming a slope with a bucket attached to a heavy machine, a body attached to the bucket; a rotating body provided on the main body so as to be rotatable about a horizontal axis; a weight provided on the rotating body; a rotating body side indicator provided on the outer periphery of the rotating body and visible from the driver's seat of the heavy equipment; a main body side indicator that is visible from the driver's seat and fixed to the main body, and that indicates the set angle of the bucket by aligning with the rotating body side indicator; A slope gradient indicating device comprising:

2. the main body-side indicator is a figure that is oriented horizontally and has a sharp point on the rotating body side, the rotating body-side support portion is a figure that is oriented horizontally and pointed toward the tip of the main body-side support portion, 2. The slope gradient indicating device according to claim 1, wherein the tips of the main body side indicating portion and the rotating body side indicating portion are aligned facing each other at the set angle of the bucket.

3. the main body integrally includes a pair of left and right rotating body mounting portions disposed on either side of the rotating body, and a connecting portion connecting upper portions of the pair of left and right rotating body mounting portions, the horizontal shaft is provided between the pair of left and right rotating body mounting portions, and the rotating body is provided rotatably by the horizontal shaft; a display surface portion is attached to one of the pair of left and right rotating body attachment portions so as to protrude outward to the left and right, the main body side instruction unit is provided on the dark colored display surface unit, The rotating body support portion is provided on a dark outer peripheral surface of the rotating body, the rotating body side indicator and the main body side indicator are brightly colored, and the maximum width of the rotating body side indicator and the main body side indicator in the up-down direction is 15 mm or more; 3. A slope gradient indicating device according to claim 2, wherein the length of the main body side indicating portion is at least twice the length of the rotating body side indicating portion.

4. A slope gradient indicating device as described in claim 2 or 3, characterized in that the weight comprises a left-right threaded rod inserted into the rotating body and left and right nuts threaded onto the left and right sides of the threaded rod, and these left and right nuts sandwich the rotating body from the left and right to fix the threaded rod to the rotating body.

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