Shovel point mounting structure for a ripper and a ripper shovel point

Abstract

A ripper blade mounting structure (6) is a ripper blade mounting structure of a ripper device (1) having a ripper shank (11) and a ripper blade (12). The ripper shank (11) has a main body portion (21) and a front end portion (22) provided at an end portion of the main body portion (21). The ripper blade (12) has an inner space (S) for insertion of the front end portion (22). An outer periphery of a cross section of a connecting portion (33) cut by a plane orthogonal to an axis (A1) extending in a length direction of the front end portion (22) is formed in an octagonal shape. An outer periphery of a cross section of a base end portion (32) cut by the plane is formed in a rectangular shape. An outer periphery of a cross section of a tip end portion (31) cut by the plane is formed in a rectangular shape. Inner surfaces forming the inner space (S) of the ripper blade (12) are formed along outer surfaces of the tip end portion (31), the connecting portion (33), and the base end portion (32) forming the front end portion (22).

Description

Technical Field

[0001] This invention relates to the mounting structure of a ripper tip and the ripper tip itself. Background Technology

[0002] As prior art, Patent Document 1 discloses a ripper tip mounting structure for a ripper device. In conventional ripper tip mounting structures for ripper devices, the ripper tip is mounted to the ripper handle via a pin component.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: International Publication No. 2011-125794 Summary of the Invention

[0006] The problem that the invention will solve

[0007] In the conventional ripper tip mounting structure, when the ripper tip is mounted on the ripper handle via a pin component, a gap may sometimes form between the ripper tip and the ripper handle due to repeated digging.

[0008] Furthermore, due to the aforementioned gap, sand enters between the ripper tip and the ripper handle, further accelerating wear on both. Consequently, the gap between the ripper handle and the ripper tip may further increase.

[0009] The purpose of this disclosure is to provide a ripper tip mounting structure capable of suppressing the gap between the ripper tip and the ripper handle. Additionally, the purpose of this disclosure is to provide a ripper tip capable of suppressing the gap between the ripper handles.

[0010] (Methods used to solve problems)

[0011] The first type of ripper tip mounting structure is a ripper tip mounting structure for a ripper device, comprising a ripper handle and a ripper tip. The ripper has a handle body and a front end portion located at the end of the body. The ripper tip has an internal space for insertion into the front end portion. The front end portion has a pointed tip, a base end portion connected to the body, and a connecting portion between the pointed tip and the base end portion. The outer periphery of the cross-section of the connecting portion is formed into an octagon using a plane orthogonal to an axis extending along the length direction of the front end portion. The outer periphery of the cross-section of the base end portion is formed into a rectangular shape using a plane. The outer periphery of the cross-section of the pointed tip portion is formed into a rectangular shape using a plane. The inner periphery forming the internal space of the ripper tip is formed along the outer periphery of the pointed tip, the connecting portion, and the base end portion.

[0012] The second type of ripper tip is mounted on a ripper handle having a front end. In the front end, the connecting portion between the rectangular tip and the rectangular base is formed in an octagonal shape. The ripper tip has a ripper tip body. The ripper tip body has an internal space for insertion into the front end. In the ripper tip body, the inner periphery of a cross-section cut by a plane orthogonal to an axis extending along the length direction of the front end, opposite the connecting portion, is formed along the outer periphery of the connecting portion of the front end.

[0013] (Invention Effects)

[0014] The ripper tip mounting structure of the ripper device disclosed herein can suppress the gap between the ripper tip and the ripper handle. Furthermore, the ripper tip of the ripper device disclosed herein can suppress the gap between the ripper handle and the ripper handle. Attached Figure Description

[0015] Figure 1 This is a side view of the soil ripper device according to Embodiment 1 of this disclosure.

[0016] Figure 2A This is a perspective view showing the ripper tip mounting structure of Embodiment 1 of this disclosure.

[0017] Figure 2B This is a perspective view showing the ripper tip mounting structure of Embodiment 1 of this disclosure.

[0018] Figure 2C This is a side view showing the ripper tip mounting structure of Embodiment 1 of this disclosure.

[0019] Figure 3 This is an exploded perspective view showing the ripper tip mounting structure of Embodiment 1 of this disclosure.

[0020] Figure 4A This is a perspective view showing the handle of the soil tiller according to Embodiment 1 of this disclosure.

[0021] Figure 4B This is a perspective view showing the handle of the soil tiller according to Embodiment 1 of this disclosure.

[0022] Figure 5A This is a side view showing the front end of the handle of the tumbler according to Embodiment 1 of this disclosure.

[0023] Figure 5B yes Figure 5A A cross-sectional view of the area between DD′.

[0024] Figure 5C This is an enlarged view of the first pin hole in Embodiment 1 of this disclosure.

[0025] Figure 6This is a side view showing the ripper tip mounting structure of Embodiment 1 of this disclosure.

[0026] Figure 7 (a) in the middle is Figure 6 A cross-sectional view of the plane (a), and (b) is... Figure 6 (b) is a cross-sectional view of the plane, and (c) is... Figure 6 The cross-sectional view of plane (c), and (d) is Figure 6 A cross-sectional view of plane (d), and (e) is... Figure 6 A cross-sectional view of plane (e), and (f) is... Figure 6 A cross-sectional view of plane (f).

[0027] Figure 8A This is a perspective view showing the tip of the ripper according to Embodiment 1 of this disclosure.

[0028] Figure 8B This is a front view showing the tip of the ripper according to Embodiment 1 of this disclosure.

[0029] Figure 9 This is a side cross-sectional view showing the ripper tip mounting structure of Embodiment 1 of this disclosure.

[0030] Figure 10A yes Figure 2C A cross-sectional view of the area between EE′.

[0031] Figure 10B This is a side view showing the positional relationship between the pin component and the pin hole in the ripper tip mounting structure of Embodiment 1 of this disclosure.

[0032] Figure 11 This is a perspective view showing the pin component and locking component of the ripper tip mounting structure according to Embodiment 1 of this disclosure.

[0033] Figure 12A This is a side view showing the locked-out state of the ripper tip mounting structure according to Embodiment 1 of this disclosure.

[0034] Figure 12B This is a side view showing the locked state of the ripper tip mounting structure according to Embodiment 1 of this disclosure.

[0035] Figure 13A This is a side view showing the locked-out state of the ripper tip mounting structure according to Embodiment 2 of this disclosure.

[0036] Figure 13B This is a side view showing the locked state of the ripper tip mounting structure according to Embodiment 2 of this disclosure.

[0037] Figure 13CThis is a side view showing the locking component of the ripper tip mounting structure according to Embodiment 2 of this disclosure.

[0038] Figure 13D This is a side view of the locking component of the ripper tip mounting structure, which represents a modified embodiment 2 of this disclosure.

[0039] Figure 14 (a) is a side view showing the ripper tip mounting structure of Embodiment 3 of this disclosure, and (b) is... Figure 14 (a) Enlarged view of part F.

[0040] Figure 15 This is a side view showing the positional relationship between the pin hole and the pin component in a modified embodiment of the present disclosure of a ripper tip mounting structure.

[0041] Figure 16A This is a perspective view showing a modified embodiment of the present disclosure in which a pin component and a locking component are arranged on the handle of the ripper.

[0042] Figure 16B This is a perspective view showing a modified embodiment of the present disclosure in which a pin component and a locking component are arranged on the handle of the ripper. Detailed Implementation

[0043] Hereinafter, the ripper tip mounting structure of the present disclosure will be described with reference to the accompanying drawings.

[0044] (Implementation Method 1)

[0045] The structure of the ripper tip mounting structure of the ripper device 1 of this embodiment 1 will be described with reference to the accompanying drawings.

[0046] (Summary of soil ripper device 1)

[0047] Figure 1 This is a side view of the soil ripper device 1.

[0048] The ripper device 1 is, for example, installed on a bulldozer. The ripper device 1 is installed at the rear of the bulldozer body. The ripper device 1 has a boom 2, a lifting cylinder 3, a tilting cylinder 4, a ripper support component 5, and a ripper blade tip mounting structure 6.

[0049] One end of the boom 2 is connected to the bulldozer body, and the other end of the boom 2 is connected to the ripper support component 5. The ripper support component 5 is rotatably mounted on the boom 2.

[0050] One end of the lifting cylinder 3 and the tilting cylinder 4 is connected to the body of the bulldozer. The other end of the lifting cylinder 3 and the tilting cylinder 4 is connected to the ripper support component 5. The ripper support component 5 is rotatably mounted on the lifting cylinder 3 and the tilting cylinder 4. The lifting cylinder 3 and the tilting cylinder 4 are hydraulic cylinders.

[0051] The ripper tip mounting structure 6 is a detachable ripper tip 12 mounted on the ripper device 1.

[0052] (Soil ripper tip installation structure 6)

[0053] Figure 2A This is an enlarged perspective view of the ripper tip mounting structure 6 as seen from the rear. Figure 2B Is with Figure 2A Different, magnified three-dimensional view of the ripper tip mounting structure 6 viewed from the front. Figure 2C This is a side view of the ripper tip mounting structure 6. Figure 3 This is an exploded view of the ripper tip installation structure 6.

[0054] like Figure 1 As shown, the ripper tip mounting structure 6 has a ripper handle 11, a ripper tip 12, a pin component 13, and a locking component 14.

[0055] The ripper handle 11 is mounted on the ripper support component 5. The ripper tip 12 is mounted on the tip of the ripper handle 11. A pin component 13 is inserted into through holes formed in the ripper tip 12 and the ripper handle 11 respectively to prevent the ripper tip 12 from falling off the ripper handle 11. A locking component 14 locks the pin component 13 inserted into the through hole.

[0056] In this embodiment, the ripper tip mounting structure 6 is further provided with a protector 15 to protect the ripper handle 11 from sand and soil. The protector 15 is located on the edge of the ripper handle 11 on the vehicle side. Furthermore, in Figure 2B In this case, protector 15 is omitted.

[0057] (ripper handle 11)

[0058] Figure 4A This is a three-dimensional view of the soil loosening tool handle 11 viewed from the front. Figure 4B This is a three-dimensional view of the soil loosening tool handle 11 viewed from below.

[0059] The ripper handle 11 is a generally plate-shaped component installed on the ripper support member 5, with a curved and sharp tip portion on the digging side. The ripper handle 11 is made of steel, for example. The ripper handle 11 is preferably made by forging, but is not limited to this and can also be cast.

[0060] like Figure 4A as well as Figure 4BAs shown, the handle 11 of the soil tamper has a main body 21, a front end 22, and a first pin hole 23 (an example of a through hole).

[0061] (Main Body Section 21)

[0062] The main body 21 is generally arranged in the vertical direction and is mounted on the ripper support member 5. The digging side end (lower part) of the main body 21 is bent toward the front of the vehicle body.

[0063] (Front end 22)

[0064] The front end portion 22 is disposed at the lower end (digging side) of the main body portion 21. The front end portion 22 is integrally formed with the main body portion 21. The front end portion 22 is formed to extend from the main body portion 21 toward the lower front.

[0065] exist Figure 4A The image shows an enlarged view of the area near the front end 22 (refer to reference B, which is surrounded by a single-dotted line). Additionally, Figure 4B The image shows an enlarged view of the area near the front end 22 (refer to C enclosed by a single-dotted line). Figure 5A This is a side view showing the area near the front end 22. Figure 5B It means Figure 5A Cross-sectional view between DD′.

[0066] like Figure 4A as well as Figure 4B As shown, the front end portion 22 is formed into a tapering shape at the tip. The front end portion 22 is formed to extend in one direction. The direction of extension of the front end portion 22 (also called the length direction) is called axis A1 (refer to...). Figure 5A ).

[0067] The front end portion 22 has: a first surface 22a with a curved inner side; a second surface 22b with a curved outer side; a third surface 22c and a fourth surface 22d that are disposed opposite each other in the width direction (perpendicular to axis A1) of the first surface 22a and the second surface 22b; and a tip surface 22e that connects the tips of the first surface 22a, the second surface 22b, the third surface 22c, and the fourth surface 22d. The first surface 22a and the second surface 22b are approximately rectangular in top view. The third surface 22c and the fourth surface 22d are approximately triangular in side view. The tip surface 22e is approximately rectangular in front view. Recesses 22f are formed between the first surface 22a and the third surface 22c, between the first surface 22a and the fourth surface 22d, between the second surface 22b and the third surface 22c, and between the second surface 22b and the fourth surface 22d.

[0068] Figure 2C When viewed from the outside, for example, in the main view of the tip surface 22e of the front end 22, axis A1 passes through the center of the tip surface 22e of the front end 22 and the center of gravity of the front end 22.

[0069] like Figure 5A As shown, the front end portion 22 has a tip portion 31, a base portion 32, and a connecting portion 33.

[0070] A tip 31 is provided at the tip of the front end portion 22. A base end portion 32 is provided on the main body side of the front end portion 22 and is connected to the main body portion 21. A connecting portion 33 is provided at the front end portion 22 between the tip 31 and the base end portion 32.

[0071] Figure 6 This is a side view showing the ripper tip mounting structure 6. Figure 7 (a)~ Figure 7 (e) represents respectively Figure 6 The diagram shows a cross-section of the ripper tip mounting structure along the cut lines (a) to (e). Figure 7 (a) is a cross-sectional view of the ripper tip mounting structure 6 of the tip 31. Figure 7 (b) is a cross-sectional view of the ripper tip mounting structure 6 at the beginning of the recess 22f along axis A1 (viewed from the tip 31 side). Figure 7 (c) is a cross-sectional view of the ripper tip mounting structure 6 at the center of the recess 22f along axis A1. Figure 7 (d) is a cross-sectional view of the ripper tip mounting structure 6 at the end of the recess 22f along axis A1 (viewed from the tip 31 side). Figure 7 (e) is a cross-sectional view of the ripper tip mounting structure 6 along the center of the first pin hole 23 on axis A1. Figure 7 (f) is a cross-sectional view of the ripper tip mounting structure 6 along the rear end (the end when viewed from the tip 31 side) of the first pin hole 23 on shaft A1.

[0072] like Figure 6 as well as Figure 7 As shown in (a), the outer periphery of the section of the tip 31 is cut off by a cross-section (a) orthogonal to the axis A1 of the front end portion 22, forming a rectangular shape. Furthermore, "outer periphery" can also be interpreted as "shape". Hereinafter, the "plane" orthogonal to the axis A1 of the front end portion 22 will be referred to as "section".

[0073] like Figure 6 As shown, in the axial direction extending from the shaft A1 of the front end 22, the tip 31 is disposed in the internal space S of the ripper tip 12, capable of abutting against the inner surface of the ripper tip 12. Here, the shape of the tip 31 in cross-section is defined as a rectangular portion.

[0074] like Figure 5A As shown, the base end portion 32 is connected to the main body portion 21. For example, the base end portion 32 is integrally formed with the main body portion 21. Figure 6 , Figure 7(e) and Figure 7 As shown in (f), the outer periphery of the cross-section of the base end portion 32, cut by sections (e) and (f), is formed into a rectangular shape. Here, the shape of the cross-section of the base end portion 32 is defined as a rectangular portion. The distance from the tip portion 31 to the base end portion 32 is defined as the front end portion 22. Furthermore, as... Figure 7 As shown in (e), the first pin hole 23 is formed at the base end 32.

[0075] Furthermore, the extent of the main body 21 and the front end 22 of the ripper handle 11 is not particularly limited. The front end 22 may be a portion closer to the tip than the lower end of the protector 15 of the ripper handle 11, and the main body 21 may be a portion closer to the upper side than the lower end of the protector 15. Alternatively, for example, the straight portion of the ripper handle 11 may be the main body 21, and the curved portion may be the front end 22.

[0076] like Figure 6 As shown, the connecting portion 33 is provided between the tip portion 31 and the base portion 32. The connecting portion 33 is integrally formed with the tip portion 31 and the base portion 32, for example.

[0077] The outer periphery of the connecting portion 33 is formed in an octagonal shape. For example, the outer periphery of the cross-section of the connecting portion 33 cut by sections (b), (c), and (d) is formed in an octagonal shape. The aforementioned recess 22f is formed in the connecting portion 33. That is, recesses 22f are formed in the connecting portion 33 at the four corners formed by the four faces 22a, 22b, 22c, and 22d of the front end portion 22, so the cross-section of the connecting portion 33 is octagonal, and the cross-sections of the tip portion 31 and the base portion 32 are rectangular. Thus, the portion whose outer periphery of the cross-section is formed in an octagonal shape is defined as the connecting portion 33.

[0078] Furthermore, since the cross-sections (b) and (d) correspond to the ends of the recess 22f, they form a shape that is close to rectangular.

[0079] The opposing sides L1 of the octagon are set to be parallel to the plane P1 containing the shaft A1 of the front end 22 and the axis A2 of the pin component 13. The two ends of side L1 are respectively as follows: Figure 4A as well as Figure 7 As shown in (c), a first ridge portion R1 is formed connecting the corner portion 32a of the base end portion 32 and the corner portion 31a of the tip portion 31. The opposing edges L1 correspond to widths perpendicular to the axis A1 of the first surface 22a and the second surface 22b, respectively.

[0080] In the octagon, the opposite sides L5 are set to be perpendicular to plane P1. The two ends of side L5 are respectively as follows: Figure 4A as well as Figure 7As shown in (c), a third ridge portion R3 is formed connecting the corner portion 32a of the base end portion 32 and the corner portion 31a of the tip portion. The opposing edges L5 correspond to widths perpendicular to the axis A1 of the third surface 22c and the fourth surface 22d, respectively.

[0081] like Figure 7 (b) and Figure 7 As shown in (c), between sides L1 and L5 of the connecting portion 33, the adjacent side L3 is one side of the outer periphery of the octagon of the connecting portion 33. Side L3 forms the surface between the first edge portion R1 and the third edge portion R3. Side L3 is set as four sides of the octagon. The four sides L3 correspond to the widths perpendicular to the axis A1 of the recess 22f.

[0082] Here, as Figure 7 (d) and Figure 7 (c) shows the length of the side L1 of the central portion of the connecting portion 33 in the length direction. Figure 7 (c) The length of side L1) is greater than the length of side L1 on the base end 32 side of the connecting portion 33. Figure 7 (d) The length of the side L1 is short. Additionally, the length of the side L1 at the center of the connecting portion 33 in the length direction is short. Figure 7 (c) The length of the side L1) is greater than the length of the side L1 on the tip 31 side of the connecting part 33. Figure 7 (b) The length of edge L1 is shorter.

[0083] Edge L1 gradually shortens from the base end 32 toward the center of the connecting portion 33 (see reference). Figure 7 (d) and Figure 7 (c)). Furthermore, edge L1 gradually increases in length from the center of the connecting portion 33 towards the tip portion 31 (see reference). Figure 7 (c) Figure 7 (b) Figure 4A as well as Figure 4B ).

[0084] like Figure 7 (b) Figure 7 (c) and Figure 7 As shown in (d), the length of the side L3 of the central portion of the connecting portion 33 in the length direction ( Figure 7 (c) The length of the side L3) is greater than the length of the side L3 on the base end 32 side of the connecting part 33. Figure 7 (d) The length of the side L3) is long. Additionally, the length of the side L3 at the center of the connecting portion 33 in the length direction ( Figure 7 (c) The length of the side L3) is greater than the length of the side L3 on the tip 31 side of the connecting part 33. Figure 7 (b) The length of side L3) is long.

[0085] like Figure 3 As shown, edge L3 gradually lengthens from the base end 32 toward the center of the connecting portion 33 (see reference). Figure 7 (d) and Figure 7 (c)). Furthermore, edge L3 gradually shortens from the center of the connecting portion 33 towards the tip portion 31 (see reference). Figure 7 (c) and Figure 7 (b)).

[0086] Furthermore, edge L5 gradually shortens from the base end 32 toward the center of the connecting portion 33 (see reference). Figure 7 (d) Figure 7 (c) Figure 4A as well as Figure 4B Furthermore, edge L5 gradually shortens from the central tip 31 of the connecting portion 33 toward (see reference). Figure 7 (c) and Figure 7 (b)).

[0087] In addition, the recess 22f corresponds to the portion sandwiched between the first ridge portion R1 and the third ridge portion R3 of the connecting portion 33.

[0088] In addition, the rectangular vertex portion (corner portion 31a) of the tip portion 31, the octagonal vertex portion of the connecting portion 33, and the rectangular vertex portion (corner portion 32a) of the base portion 32 are connected sequentially from the tip portion 31 toward the base portion 32.

[0089] (First pin hole 23)

[0090] A first pin hole 23 is provided at the front end portion 22. The first pin hole 23 extends in a direction orthogonal to the axis A1 of the front end portion 22. In detail, as described above, the first pin hole 23 is provided at the base end portion 32.

[0091] Figure 5C yes Figure 5A An enlarged side view of the first pin hole 23 shown. A pin component 13 is inserted into the first pin hole 23 at the front end 22. Figure 5C As shown, the inner circumferential surface of the first pin hole 23 is formed into an elongated hole shape. For example... Figure 5C As shown, the first inner circumferential surface 23a of the first pin hole 23 formed on the tip surface 22e side of the front end portion 22 is formed in an arc shape. The radius of the first inner circumferential surface 23a is larger than the radius of the pin component 13.

[0092] The second inner circumferential surface 23b of the first pin hole 23, formed on the side opposite to the tip surface 22e (also referred to as the main body 21 side) of the front end portion 22, is formed in an arc shape. The radius of the second inner circumferential surface 23b is larger than the radius of the pin member 13. The distance (major axis) between the first inner circumferential surface 23a and the second inner circumferential surface 23b is larger than the diameter of the pin member 13. Furthermore, the major axis is arranged, for example, along axis A1.

[0093] A pair of third inner circumferential surfaces 23c formed between the first inner circumferential surface 23a and the second inner circumferential surface 23b are planar. The spacing (minor axis) between the pair of third inner circumferential surfaces 23c is larger than the diameter of the pin component 13.

[0094] Furthermore, in detail, in Figure 10A As will be described in detail later, with the ripper tip 12 installed on the ripper handle 11, the pin component 13 connecting the ripper tip 12 and the ripper handle 11 contacts the first inner circumferential surface 23a. The pin component 13 has a circular cross-sectional shape, thus forming a gap T between the pin component 13 and the second inner circumferential surface 23b, as described later, on the base end 32 side (main body 21 side).

[0095] (Soil ripper tip 12)

[0096] like Figures 2A to 2C as well as Figure 3 As shown, the ripper tip 12 is mounted on the ripper handle 11. The ripper tip 12 has a wedge shape from the tip face 40g (an example of a tip) to the rear end 40i.

[0097] Figure 8A This is a three-dimensional view of the ripper tip 12 as seen from the side opposite to the tip. (See image below.) Figure 8A As shown, the ripper tip 12 has an internal space S for inserting into the front end 22 of the ripper handle 11 (see reference). Figure 6 The inner surface of the ripper tip 12 is formed along the outer surface of the ripper handle 11. The ripper tip 12 is made of steel, for example. The ripper tip 12 is preferably made by forging, but is not limited to this and can also be cast.

[0098] With the ripper tip 12 installed on the ripper handle 11, as follows: Figure 2C As shown, it extends along axis A1.

[0099] like Figure 8A As shown, the ripper tip 12 has a ripper tip body 40, a guide groove 41 (an example of a recess), and a second pin hole 42.

[0100] The ripper tip body 40 is formed in a bottomed cylindrical shape. The inner surface of the ripper tip body 40 is formed along the outer surface of the front end portion 22. The inner surface of the ripper tip body 40 is formed into a tapering shape at the tip. The aforementioned internal space S is formed by thus forming the ripper tip body 40. The front end portion 22 of the ripper handle 11 (see reference) is disposed in the internal space S. Figure 6 ).

[0101] like Figure 8AAs shown, the ripper tip body 40 serves as the inner surface 40s forming the internal space S, and has a first surface 40a, a second surface 40b, opposing side surfaces namely a third surface 40c and a fourth surface 40d, and a tip surface 40e.

[0102] The first surface 40a is the inner curved surface when the ripper tip 12 is mounted on the ripper handle 11. The second surface 40b is the outer curved surface when the ripper tip 12 is mounted on the ripper handle 11. In top view, the first surface 40a and the second surface 40b are approximately rectangular. The third surface 40c is formed connecting the first surface 40a and the second surface 40b. The fourth surface 40d is formed connecting the first surface 40a and the second surface 40b. In side view, the third surface 40c and the fourth surface 40d are approximately triangular. The tip surface 40e is formed connecting the tip side end of the first surface 40a, the tip side end of the second surface 40b, the tip side end of the third surface 40c, and the tip side end of the fourth surface 40d.

[0103] With the ripper tip 12 installed on the ripper handle 11, the first surface 40a is opposite to the first surface 22a, the second surface 40b is opposite to the second surface 22b, the third surface 40c is opposite to the third surface 22c, and the fourth surface 40d is opposite to the fourth surface 22d. Figure 9 This is a side sectional view of the ripper tip 12 mounted on the ripper handle 11. (See diagram below.) Figure 9 As shown, with the ripper tip 12 installed on the ripper handle 11, the tip surface 40e faces the tip surface 22e of the front end 22 and abuts against the tip surface 22e.

[0104] The first surface 40a and the first surface 22a, the second surface 40b and the second surface 22b, the third surface 40c and the third surface 22c, the fourth surface 40d and the fourth surface 22d, and the tip surface 40e and the tip surface 22e are each formed to be approximately the same size.

[0105] In addition, the spaces between the first surface 40a and the third surface 40c, between the first surface 40a and the fourth surface 40d, between the second surface 40b and the third surface 40c, and between the second surface 40b and the fourth surface 40d are respectively as follows: Figure 8A As shown, a protrusion 40f is formed. With the ripper tip 12 mounted on the ripper handle 11, each protrusion 40f and four recesses 22f are respectively opposed and in contact. The protrusion 40f is formed in a shape corresponding to the opposed recesses 22f.

[0106] In addition, the shape of the ripper shovel tip body 40 is as follows Figure 8B As shown, it is substantially parallel to, for example, the first surface 40a, the second surface 40b, the third surface 40c, and the fourth surface 40d, and connected to the tip surface 40g.

[0107] The guide groove 41 is a structure used to guide the locking member 14 toward the pin member 13. The guide groove 41 is as follows: Figure 8A As shown, guide grooves 41 are provided on the inner surface of the ripper tip body 40. Guide grooves 41 are respectively provided on the third surface 40c and the fourth surface 40d. The guide grooves 41 extend from the edge of the opening 40h formed at the rear end 40i of the ripper tip body 40 toward the tip surface 40e of the ripper tip body 40, and along the inner surface 40s of the ripper tip body 40. The guide grooves 41 extend along the axis A1.

[0108] The second pin hole 42 penetrates the ripper tip body 40. The second pin hole 42 is formed on both the third surface 40c and the fourth surface 40d. For example, the second pin hole 42 can be connected to the first pin hole 23 (see reference). Figure 7 (e) A connection is formed in the ripper tip body 40. A second pin hole 42 is provided in the guide groove 41. The second pin hole 42 penetrates the bottom surface 41a of the guide groove 41. A pin component 13 is disposed in the second pin hole 42.

[0109] like Figure 6 as well as Figure 7 As shown, the inner periphery of the section of the ripper tip 12 cut by the above-mentioned sections (a) to (e) is formed as follows.

[0110] like Figure 6 as well as Figure 7 As shown, in the ripper tip body 40, the part opposite to the front end 22 has a first part 51, a second part 52, and a third part 53.

[0111] like Figure 7 As shown, the first part 51 is the portion of the ripper tip body 40 that faces the tip 31 of the front end 22. The inner surface of the first part 51 is formed along the outer surface of the tip 31 of the front end 22. The inner periphery of the cross section of the first part 51 cut by section (a) is formed into a rectangular shape.

[0112] like Figure 7 (e) and Figure 7 As shown in (f), the second part 52 is the portion of the ripper tip body 40 that faces the base end 32 of the front end 22. The inner surface of the second part 52 is formed along the outer surface of the base end 32 of the front end 22. The inner circumference of the cross-section of the second part 52 cut by sections (e) and (f) is rectangular. The second pin hole 42 is mostly formed in the second part 52, and part of it is formed in the third part 53, which will be described later.

[0113] like Figure 7 (b) Figure 7 (c) and Figure 7As shown in (d), the third part 53 is the portion opposite to the connection 33 of the front end 22 of the ripper tip body 40. The inner surface of the third part 53 is formed along the outer surface of the connection 33 of the front end 22. For example, the inner periphery of the cross section of the third part 53 cut by the cross section (b), cross section (c) and cross section (d) is formed into an octagon.

[0114] In Part 3, Section 53, the opposite sides L2 of the octagon are formed parallel to plane P1. For example... Figure 8A , Figure 7 (b) Figure 7 (c) and Figure 7 As shown in (d), a second ridge portion R2 is formed on the inner surface of the third part 53 through both ends of the octagonal side L2. The second ridge portion R2 connects the corner portion 51a of the first part 51 and the corner portion 52a of the second part 52. With the ripper tip 12 installed on the ripper handle 11, side L2 is opposite to side L1, and the second ridge portion R2 is configured to be connected to the first ridge portion R1 of the ripper handle 11 (connecting part 33) (see reference). Figure 3 Opposite. The opposite side L2 is the width of the axis A1 that is perpendicular to the first surface 40a and the second surface 40b, respectively.

[0115] Additionally, an opposite side L6 is formed, which is perpendicular to side L2. Using the two ends of side L6 respectively, as... Figure 8A , Figure 7 (b) Figure 7 (c) and Figure 7 As shown in (d), a fourth ridge portion R4 is formed on the inner surface of the third part 53. The fourth ridge portion R4 connects the corner portion 51a of the first part 51 and the corner portion 52a of the second part 52. With the ripper tip 12 installed on the ripper handle 11, with sides L6 and L5 facing each other, the fourth ridge portion R4 is positioned opposite the third ridge portion R3 of the ripper handle 11 (connecting part 33). The opposing sides L6 correspond to widths perpendicular to the axis A1 of the third surface 40c and the fourth surface 40d, respectively.

[0116] like Figure 7 (b) Figure 7 (c) and Figure 7 As shown in (d), between edge L2 and edge L6 of the third part 53, edge L2 and edge L4 adjacent to edge L6 form one side of the outer periphery of the octagon of the third part 53. Edge L4 forms the surface between the second edge portion R2 and the fourth edge portion R4. A protrusion 40f is formed between the second edge portion R2 and the fourth edge portion R4. Edge L4 is set as four sides of the octagon. In addition, the four edges L4 correspond to the widths perpendicular to the axis A1 of the protrusion 40f.

[0117] Here, as Figure 7 (b) Figure 7 (c) and Figure 7 As shown in (d), the length of the side L2 of the central portion of the third part 53 in the length direction (axis A1 direction) is ( Figure 5B (c) The length of edge L2) is greater than the length of edge L2 on the side of the second part 52 in the third part 53. Figure 5B (d) The length of edge L2 is short. Additionally, the length of edge L2 at the center of the third part 53 in the length direction is short. Figure 7 (c) The length of edge L2) is greater than the length of edge L2 on the side of the first part 51 in the third part 53. Figure 7 (b) The length of side L2 is shorter.

[0118] Edge L2 gradually shortens from the center of the second part 52 toward the third part 53 (see reference). Figure 7 (d) and Figure 7 (c)). Furthermore, edge L2 gradually increases in length from the center of the third part 53 towards the first part 51 (see reference). Figure 7 (c) Figure 7 (b) and Figure 8A ).

[0119] like Figure 7 (b) Figure 7 (c) and Figure 7 As shown in (d), the length of the edge L4 of the central part of the third part 53 in the length direction ( Figure 7 (c) The length of edge L4 is greater than the length of edge L4 on the side of the second part 52 in the third part 53. Figure 7 (d) The length of the side L4) is long. Additionally, the length of the side L4 at the center of the third part 53 in the length direction is ( Figure 7 (c) The length of edge L4) is greater than the length of edge L4 on the side of the first part 51 in the third part 53. Figure 7 (b) The length of side L4.

[0120] Side L4 gradually lengthens from the center of the second part 52 toward the third part 53 (see reference). Figure 7 (d) Figure 7 (c) and Figure 8A Additionally, edge L4 gradually shortens from the center of the third part 53 toward the first part 51 (see reference). Figure 7 (c) and Figure 7 (b)).

[0121] Furthermore, edge L6 gradually shortens from the center of the second part 52 toward the third part 53 (see reference). Figure 7 (d) Figure 7 (c) and Figure 8AAdditionally, edge L6 gradually shortens from the center of the third part 53 toward the first part 51 (see reference). Figure 7 (c) and Figure 7 (b)).

[0122] Furthermore, the rectangular vertex portion (corner portion 51a) of the first part 51, the octagonal vertex portion of the third part 53, and the rectangular vertex portion (corner portion 52a) of the second part 52 are connected sequentially from the first part 51 through the third part 53 toward the second part 52.

[0123] Thus, a second ridge portion R2 and a fourth ridge portion R4 are formed on the inner surface of the ripper tip 12, and a first ridge portion R1 and a third ridge portion R3 are formed on the ripper handle 11 as described above. This allows the ripper tip 12 to be positioned relative to the ripper handle 11. In other words, it suppresses the gap between the ripper tip 12 and the ripper handle 11.

[0124] (Pin component 13)

[0125] Figure 10A yes Figure 2C A cross-sectional view of the area between EE′. Figure 10B This is a diagram showing the positional relationship between the pin component 13, the first pin hole 23, and the second pin hole 42. Figure 11 This is a perspective view showing the pin component 13 and the locking component 14.

[0126] like Figure 3 As shown, pin component 13 connects the ripper handle 11 and the ripper tip 12. Pin component 13 is disposed in the first pin hole 23 and the second pin hole 42. Pin component 13 is formed in a cylindrical shape. Alternatively, pin component 13 may be formed in a cylindrical shape. Pin component 13 has a central axis A2.

[0127] like Figure 9 As shown, with the tip surface 22e of the front end 22 abutting against the tip surface 40e of the inner space S of the ripper tip 12, the pin component 13 is disposed in the first pin hole 23 and the second pin hole 42.

[0128] In this state, as shown in FIG10, the pin component 13 contacts the first inner circumferential surface 23a of the first pin hole 23 on the tip 31 side of the front end 22. In addition, the pin component 13 contacts the inner circumferential surface of the second pin hole 42 on the main body 21 side of the ripper tip body 40 (the side opposite to the tip 31).

[0129] In this state, such as Figure 10A as well as Figure 10B As shown, the shaft A2 is offset from the center A3 of the first pin hole 23 towards the tip 31 of the front end 22. Figure 10B In the middle, arrow J indicates the side of the tip 31.

[0130] With this configuration, when the pin component 13 is positioned in the first pin hole 23 of the ripper handle 11 and the second pin hole 42 of the ripper tip 12, a gap T is formed on the main body 21 side between the pin component 13 and the second inner circumferential surface 23b of the first pin hole 23. This gap T prevents the pin component 13 from contacting the main body 21 side of the first pin hole 23 during digging and penetration operations using the ripper device 1. This improves the durability of both the pin component 13 and the first pin hole 23.

[0131] Additionally, the pin component 13 has an annular groove 13a. The annular groove 13a is formed on the outer peripheral surface of the pin component. The annular groove 13a is formed near one or both ends of the pin component 13. The annular groove 13a is disposed between the ripper handle 11 and the ripper tip 12. More specifically, the annular groove 13a of the pin component 13 is disposed in the guide groove 41.

[0132] A locking member 14 engages in the annular groove 13a. More specifically, an engaging portion 61a (described later) of the locking member 14 engages in the annular groove 13a.

[0133] (Locking component 14)

[0134] Locking component 14 is used to prevent pin component 13 from falling off. For example... Figure 11 As shown, the locking member 14 engages with the pin member 13 by sliding toward the pin member 13. The locking member 14 engages with the pin member 13 by sliding in the direction from the main body 21 side of the tumbler handle 11 toward the pin member 13.

[0135] Locking component 14 is disposed between the ripper handle 11 and the ripper tip 12. Locking component 14 is disposed between the outer surface of the front end portion 22 and the inner surface of the ripper tip body 40. Locking component 14 is disposed in the guide groove 41 (see reference). Figure 10A ).

[0136] The locking component 14 has a locking body 61 and a claw 62.

[0137] The locking body 61 is, for example, a plate-shaped component. The locking body 61 has an engaging portion 61a and an opening portion 61b. The engaging portion 61a is the part that engages with the pin component 13. The engaging portion 61a has a C-shaped inner circumferential surface. The engaging portion 61a is fitted into the annular groove 13a of the pin component 13. The opening portion 61b is the part that guides the pin component 13 towards the engaging portion 61a. The spacing between the opening ends in the opening portion 61b is larger than the diameter of the annular groove 13a of the pin component 13.

[0138] like Figure 11As shown, the claw portion 62 is a protruding part from the locking body 61. For example, the claw portion 62 is integrally formed with the locking body 61. Figure 10A As shown, the claw 62 is located outside the tip 12 of the ripper and is positioned on the third surface 22c of the front end 22. Furthermore, the third surface 22c is... Figure 1 as well as Figure 10A The side 11a of the handle 11 of the soil tiller shown is part of the whole.

[0139] The locking component 14 having the above configuration is installed as follows.

[0140] First, the ripper tip 12 is installed on the ripper handle 11. Then, the pin component 13 is inserted into the second pin hole 42 of the ripper tip 12 and the first pin hole 23 of the ripper handle 11. The annular groove 13a of the pin component 13 is as follows... Figure 10A As shown, it is configured in guide slot 41.

[0141] Next, the locking component 14 is inserted into the guide groove 41 from the edge of the opening 40h of the ripper tip 12. Figure 12A This is a side view showing the locking component 14 inserted into the guide slot 41. Figure 12A In the middle, for illustration, the tip 12 of the ripper is represented by a dashed line.

[0142] The locking member 14 is configured such that the opening 61b of the locking body 61 is opposite to the annular groove 13a of the pin member 13 (see 2A). This state is the state in which the locking member 14 and the pin member 13 are released from engagement (lock-out state).

[0143] In the unlocked state, the claw portion 62 presses against the pin component 13 (refer to arrow E1). As a result, the locking body 61 slides along the guide groove 41 towards the pin component 13, and the engaging portion 61a of the locking body 61 engages with the annular groove 13a of the pin component 13 (refer to...). Figure 12B This state indicates that the locking component 14 and the pin component 13 are engaged (locked state).

[0144] Thus, in the unlocked state, the locking member 14 is slid toward the pin member 13 to prevent the pin member 13 from falling off. In the locked state, the locking member 14 is slid away from the pin member 13 to release the pin member 13 from the lock.

[0145] (Implementation Method 2)

[0146] In Embodiment 1, an example is shown where the locking member 14 slides from the main body 21 of the ripper handle 11 toward the pin member 13 (tip direction) and engages with the pin member 13. Alternatively, it can be configured such that... Figures 13A to 13CThe ripper tip mounting structure 106 of Embodiment 2 is shown as described. Furthermore, the configuration omitted here is based on the configuration of the embodiment described above.

[0147] In this case, such as Figure 13A as well as Figure 13B As shown, the locking member 114 engages with the pin member 13 by sliding away from the pin member 13. For example, the locking member 114 engages with the pin member 13 by sliding from the pin member 13 toward the side facing the main body 21 (opposite to the tip direction).

[0148] like Figure 13C As shown, the locking component 114 has a locking body 161 and a claw 62. The claw 62 has the same configuration as in the embodiment described above.

[0149] like Figure 13C As shown, the locking body 161 is formed, for example, in the shape of a rectangular plate. The locking body 161 has an engaging portion 161a and an opening portion 161b. The engaging portion 161a is the part that engages with the pin member 13. The engaging portion 161a has, for example, a C-shaped inner peripheral surface. The engaging portion 161a is fitted into the annular groove 13a of the pin member 13.

[0150] The opening 161b is the portion where the pin member 13 is positioned before it engages with the engaging portion 161a. The opening 161b is located between the engaging portion 161a and the claw portion 62. The opening 161b has a C-shaped inner circumferential surface. The diameter of the opening 161b is larger than the diameter of the pin member 13.

[0151] The locking component 114 having the above configuration is installed as follows.

[0152] First, the ripper tip 12 is installed on the ripper handle 11. Next, the locking member 114 is inserted into the guide groove 41. The locking member 114 is configured such that the opening 161b is opposite to the first pin hole 23 and the second pin hole 42.

[0153] Next, the pin component 13 is inserted into the second pin hole 42 of the ripper tip 12, the opening 161b of the locking component 114, and the first pin hole 23 of the front end 22 of the ripper handle 11.

[0154] The annular groove 13a of the pin component 13 is arranged opposite to the opening 161b of the locking body 161 (see reference). Figure 13A This state is the state in which the locking component 114 and the pin component 13 are released from engagement (locking release state).

[0155] In this unlocked state, the claw portion 62 presses towards the main body portion 21 (arrow E2 side). As a result, the locking body 161 slides away from the pin member 13. Consequently, the engaging portion 161a of the locking body 161 engages with the annular groove 13a of the pin member 13 (see reference). Figure 13B This state is the locked state, where locking component 114 and pin component 13 are engaged.

[0156] Thus, in the unlocked state, the locking member 114 is slid away from the pin member 13 to prevent the pin member 7 from falling off. In the locked state, the locking member 114 is slid closer to the pin member 13 to release the pin member 13 from the lock.

[0157] Furthermore, the locking member 114, which slides away from the pin member 13, is not limited to... Figure 13C The shape shown can also be Figure 13D The locking component 214 is shown.

[0158] Figure 13D The locking member 214 shown has a locking body 261 with a notch 261c formed around the engaging portion 161a. The notch 261c extends from the portion of the pin member 13 where the engaging portion 161a is disposed to the outer edge. The notch 261c is formed in a manner along the sliding direction. Thus, the engaging portion 161a is divided into two parts.

[0159] The locking component 214 is installed in the same way as the locking component 114, with the annular groove 13a of the pin component 13 facing the opening 161b of the locking body 261, and the claw portion 62 pressed towards the body portion 21 (arrow E2 side). As a result, the locking body 261 slides away from the pin component 13, and the engaging portion 161a of the locking body 261 engages with the annular groove 13a of the pin component 13.

[0160] (Implementation Method 3)

[0161] In the locking member 114 of embodiments 1 and 2 described above, the claw 62 is disposed on the side 11a of the ripper handle 11, and the protected configuration can also be used as in embodiment 3. Furthermore, for configurations omitted here, the configuration of the described embodiments shall prevail.

[0162] Figure 14 (a) is a perspective view of the ripper tip mounting structure 206 having a protective part 70 around the claw part 62. Figure 14 (b) is Figure 14 (a) Enlarged view of part F.

[0163] The ripper tip mounting structure 206 of this embodiment 3 also includes a protective part 70. The protective part 70 is provided to prevent sand or soil from colliding with the claw part 62. The protective part 70 has multiple protrusions 71 that are fixed to the side surface 11a of the ripper handle 11. For example, in... Figure 14 In (b), a protrusion 71 is provided in a U-shape in a side view, surrounding the side of the ripper tip 12 except for the claw portion 62. From the viewpoint of protecting the claw portion 62, it is preferable that the height of the side 11a of the protrusion 71 is higher than the height of the side 11a of the claw portion 62.

[0164] In addition, the protection unit 70 also functions as a guide when the locking member 14 slides.

[0165] Furthermore, in this embodiment 3, a protective part 70 is applied to the locking member 14 of the shape of embodiment 1, and the same can be applied to the locking member 114 of the shape of embodiment 2.

[0166] <Characteristics, etc.> (1)

[0168] Any one of the ripper tip mounting structures 6, 106, and 206 in embodiments 1, 2, and 3 described above is a ripper tip mounting structure for the ripper device 1, comprising a ripper handle 11 and a ripper tip 12. The ripper handle 11 has a main body 21 and a front end portion 22 located at the end of the main body 21. The ripper tip 12 has an internal space S for insertion into the front end portion 22. The front end portion 22 has a tip portion 31, a base portion 32, and a connecting portion 33. The base portion 32 is connected to the main body 21. The connecting portion 33 is located between the tip portion 31 and the base portion 32. The outer periphery of the cross-section of the connecting portion 33 is octagonal when cut by a plane orthogonal to the axis A1 extending along the length direction of the front end portion 22. The outer periphery of the cross-section of the base portion 32 is rectangular when cut by a plane. The outer periphery of the cross-section of the tip portion 31 is rectangular when cut by a plane. The inner surface of the internal space S of the soil ripper tip 12 is formed along the outer surface of the tip 31, the connecting part 33 and the base end 32 of the front end 22.

[0169] The front end 22 of the ripper tip 12, which is inserted into the inner space S of the ripper tip 12, has a shape that varies from the tip to a rectangular shape, an octagonal shape, and a rectangular shape, and the inner surface 40s of the inner space S of the ripper tip 12 is formed in a manner corresponding to its shape.

[0170] As described above, a recess 22f is formed in the octagonal part, and a protrusion 40f corresponding to the recess 22f is formed in the internal space S of the ripper tip 12.

[0171] By arranging these recesses 22f opposite to the protrusions 40f, the movement of the ripper tip 12 relative to the front end portion 22 of the ripper handle 11 can be restricted. Specifically, in this state, the lengths of the edges L1 and L3 of the connecting portion 33 and the lengths of the edges L2 and L4 of the third portion 53 vary in the length direction, thus restricting the movement of the third portion 53 of the ripper tip 12 relative to the connecting portion 33 of the front end portion 22. Furthermore, in the direction of the axis A1 of the front end portion 22, the movement of the third portion 53 of the ripper tip 12 relative to the connecting portion 33 of the front end portion 22 can also be restricted.

[0172] Therefore, it can suppress the gap between the ripper tip 12 and the ripper handle 11. (2)

[0174] In any of the ripper tip mounting structures 6, 106, and 206 in embodiments 1 to 3, the two ends of the opposing sides L1 in the connecting portion 33 respectively form a first ridge portion R1 (an example of a ridge) connecting the corner portion 32 of the base end portion 32 and the corner portion 31a of the tip portion 31. Furthermore, the two ends of the opposing sides L3 in the connecting portion 33 respectively form a third ridge portion R3 (an example of a ridge) connecting the corner portion 32 of the base end portion 32 and the corner portion 31a of the tip portion 31.

[0175] Therefore, the movement of the ripper tip 12 can be restricted in the part between the first ridge portion R1 and the third ridge portion R3 of the connecting portion 33. (3)

[0177] In any of the ripper tip mounting structures 6, 106, and 206 in embodiments 1 to 3, the tip portion 31 of the front end portion 22 has a tip surface 22e at its end along the direction of axis A1. The tip surface 22e abuts against the inner surface 40s of the ripper tip 12.

[0178] When a gap is formed between the tip of the front end and the inner surface of the ripper shovel tip, the tip of the front end can be stuck into the ripper shovel tip by crushing, digging or other actions, making it difficult to remove the ripper shovel tip from the ripper handle when the ripper shovel tip is replaced.

[0179] In this embodiment, since the tip 22e abuts against the inner surface 12s of the ripper tip 12, it is possible to prevent the front end 22 from getting stuck in the ripper tip 12, and the ripper tip 12 can be easily removed from the ripper handle 11 when the ripper tip 12 is replaced. (4)

[0181] Any of the ripper tip mounting structures 6, 106, and 206 in embodiments 1 to 3 further includes a pin component 13 connecting the ripper handle 11 and the ripper tip 12. The ripper handle 11 has a first pin hole 23 (an example of a through hole) extending in a direction orthogonal to the axis A1 and provided with the pin component 13. The first pin hole 23 is formed in an elongated hole shape.

[0182] Thus, the pin component 13 contacts the first inner circumferential surface 23a on the tip side of the tumbler handle 11 in the inner circumferential surface of the first pin hole 23, and does not contact the second inner circumferential surface 23b on the opposite side of the tip (the side of the main body 21), thereby forming a gap T between the pin component 13 and the second inner circumferential surface 23b.

[0183] Therefore, during excavation and penetration operations using the ripper device 1, the pin component 13 is unlikely to come into contact with the main body 21 side of the first pin hole 23. This improves the durability of both the pin component 13 and the first pin hole 23. (5)

[0185] In any of embodiments 1 to 3, the ripper tip 12 is mounted on the ripper handle 11. The ripper handle 11 has an octagonal front end portion 22 formed by a connecting portion 33 between a rectangular tip portion 31 and a rectangular base portion 32. It also has a ripper tip body 40, which has an internal space S for inserting into the front end portion 22. In the ripper tip body 40, the inner periphery of the cross-section of the third portion 53 opposite the connecting portion 33, cut by a plane orthogonal to the axis A1 extending along the length direction of the front end portion 22, is formed along the outer periphery of the connecting portion 33 of the front end portion 22.

[0186] As described above, a recess 22f is formed in the octagonal part, and a protrusion 40f is formed in the inner space S of the ripper tip 12 in a manner corresponding to the recess 22f.

[0187] Therefore, it can suppress the gap between the ripper tip 12 and the ripper handle 11. (6)

[0189] In any of embodiments 1 to 3, the ripper tip 12 further includes a second pin hole 42 (an example of a through hole) and a guide groove 41. The second pin hole 42 is fitted with a pin component 13 for connecting to the ripper handle 11. The guide groove 41 engages with the pin component 13, allowing a locking component 14 that prevents the pin component 13 from falling off to slide. The second pin hole 42 passes through the bottom surface 41a of the guide groove 41.

[0190] Thus, by sliding the locking member 14 along the guide groove 41, it is possible to prevent the pin member 13 from being pulled out of the second pin hole 42.

[0191] <Other Implementation Methods>

[0192] The present invention has been described above as an embodiment of the invention, but the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the invention.

[0193] (A)

[0194] In the above embodiment, the first pin hole 23 has the same size as the cross section perpendicular to the center A3, but the two ends of the direction in which the center A3 extends can be larger than the central part.

[0195] Furthermore, in the above embodiment, the first pin hole 23 is formed as an elongated hole, but it can also be formed as follows: Figure 15 As shown in the diagram, the first pin hole 23' is a normally circular hole. Unlike the first pin hole 23, the first pin hole 23' has a fixed circular radius and does not have a pair of third inner circumferential surfaces 23c; the first inner circumferential surface 23a and the second inner circumferential surface 23b are directly connected. Furthermore, the diameter of the first pin hole 23' is larger than the diameter of the pin component 13.

[0196] (B)

[0197] In the above embodiments, an example is shown in which the locking member 14 is used to prevent the pin member 13 from falling off, but a retainer or other locking member can also be used to prevent the pin member 13 from falling off.

[0198] (C)

[0199] The ripper tip mounting structures 6, 106, and 206 of the above embodiments do not have a positioning and locking component 14, but Figure 16A as well as Figure 16B As shown, the ripper tip mounting structure 6 can also have a configuration for positioning and locking components 14.

[0200] In this case, for example, the ripper handle 11 also has a protrusion 81 or a protrusion 82. The protrusions 81 and 82 are provided on the outer surface of the ripper handle 11. The protrusions 81 and 82 are formed on the outer surface of the front end portion 22.

[0201] Figure 16A In the unlocked state, the protrusion 81 supports the locking member 14, such as the locking body 61. When the ripper tip 12 is positioned on the ripper handle 11, the protrusion 81 is positioned in the guide groove 41 of the ripper tip 12. Thus, by providing the protrusion 81 on the ripper handle 11, the locking member 14 can be easily positioned relative to the ripper handle 11.

[0202] Figure 16BIn the locked state, the protrusion 82 engages with the locking member 14, such as the locking body 61. When the ripper tip 12 is positioned on the ripper handle 11, the protrusion 82 is positioned in the guide groove 41 of the ripper tip 12. Thus, by providing the protrusion 82 on the ripper handle 11, the locking member 14 can be easily positioned relative to the ripper handle 11. Furthermore, the ripper tip mounting structures 6, 106, and 206 may also have… Figure 16A as well as Figure 16B The composition of these two parties.

[0203] (D)

[0204] In the above-described embodiment 3, the protective portion 70, which includes the protective claw portion 62, is provided as a component distinct from the protector 15. However, the protector 15 and the protective portion 70 may also be formed as a single component. Furthermore, the shape of the protective portion 70 surrounding the claw portion 62 is not limited to this. Figure 14 A and Figure 14 A rectangular shape like the one shown in B can also be a curved shape.

[0205] (E)

[0206] In the above embodiment, the first pin hole 23 is provided at the base end 32, but it is not limited to this and may also be provided at the connecting part 33.

[0207] Industrial availability

[0208] The ripper tip mounting structure disclosed herein, and the ripper tip having the effect of suppressing the gap between the ripper tip and the ripper handle, are useful, for example, as ripper devices for bulldozers, motorized graders, etc.

[0209] Explanation of reference numerals in the attached figures

[0210] 6: Installation structure of the ripper tip

[0211] 11: Ripper handle

[0212] 12: Soil ripper tip

[0213] 21: Main body

[0214] 22: Front end

[0215] 31: Tip

[0216] 32: Base end

[0217] 33: Connecting Part

Claims

1. A ripper tip mounting structure for a ripper device, characterized in that, have: A soil tamper handle, which has a main body and a front end portion located at the end of the main body; The ripper tip has an internal space for insertion into the front end; The front end portion has: a pointed portion, a base end portion connected to the main body portion, and a connecting portion provided between the pointed portion and the base end portion. The outer periphery of the cross-section of the connecting portion is formed into an octagon by cutting it with a plane orthogonal to the axis extending along the length direction of the front end. The outer periphery of the cross-section of the base end is cut off using the plane to form a rectangle. The outer periphery of the cross-section of the tip is cut off using the plane to form a rectangle. The inner surface of the internal space forming the tip of the ripper is formed along the outer surface of the tip portion, the connecting portion, and the base portion forming the front end portion.

2. The ripper tip mounting structure as described in claim 1, characterized in that, In the connecting portion, the two ends of the opposite sides are respectively formed with edge lines connecting the corner portion of the base end and the corner portion of the tip end.

3. The ripper tip mounting structure as described in claim 1 or 2, characterized in that, The tip of the front end has a pointed surface at its end along the direction of the axis. The pointed end abuts against the inner surface of the ripper tip.

4. The ripper tip mounting structure as described in claim 1 or 2, characterized in that, It also has a pin component connecting the ripper handle and the ripper tip. The ripper handle has a through hole extending in a direction orthogonal to the axis, and is fitted with the pin component. The through hole is formed into an elongated hole shape.

5. A ripper tip, mounted on a ripper handle, the ripper handle having an octagonal front end portion forming a connecting portion between a rectangular tip portion and a rectangular base portion, characterized in that... It has a ripper tip body, which has an internal space for insertion into the front end. The inner periphery of the cross-section of the portion of the ripper tip body opposite the connecting part, cut by a plane orthogonal to the axis extending along the length direction of the front end, is formed into an octagonal shape along the outer periphery of the connecting part of the front end. The inner circumference of the cross-section of the portion of the ripper tip body opposite the tip, cut by the plane, is rectangular. The inner circumference of the cross-section of the portion of the ripper tip body opposite the base end, cut by the plane, is rectangular.

6. The ripper tip as described in claim 5, characterized in that, It also has: A through hole, which is equipped with a pin component for connecting the handle of the ripper; A guide groove allows the locking component to slide, and the locking component engages with the pin component by sliding to prevent the pin component from falling off; The through hole extends through the bottom surface of the guide groove.

Images