Ridge forming device and ridge forming system

Abstract

To provide a ridge forming device capable of reducing burdens on workers.SOLUTION: A ridge forming device 21, being an attachment, is used while attached to a front wheel 15 of a tractor 11, being a traveling vehicle capable of traveling in a field. The ridge forming device 21 includes a mounting part 23 demountably mounted on a wheel part 16 of the front wheel 15 of the tractor 11. The mounting part 23 includes a ridge side forming body 24 for forming a ridge side while rotating around a rotation center axis X in a horizontal direction.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a ridge forming device and a ridge forming system. [Background technology]

[0002] 2. Description of the Related Art A ridge forming tool as described in, for example, Patent Document 1 below is known.

[0003] This conventional ridge forming tool is attached to the rear wheels of a vehicle capable of traveling in a farm field. That is, as shown in Fig. 12, for example, a conventional ridge forming tool 1 is detachably attached to the rear wheels 3 of an agricultural tractor 2 capable of traveling in a farm field, and includes an inclined surface forming body 5 for forming the side surfaces of the ridge and an upper surface forming body 6 for forming the upper surface of the ridge. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 9-140209 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with the above-mentioned conventional ridge forming tool (ridge forming device), there are left unworked areas, for example in corners of a farm field, where the ridge forming tool 1 cannot work, as shown in FIG.

[0006] The length L of the unworked portion is the distance between the front end position of the tractor 2 and the rotation center position of the ridge forming tool 1, and this distance is relatively long. Therefore, if a worker were to perform ridge forming work manually (by human power) on the relatively long unworked portion, the burden on the worker would be large.

[0007] Therefore, one object of the present invention is to provide a ridge forming device and a ridge forming system that can reduce the burden on workers. [Means for solving the problem]

[0008] A ridge formation device according to an embodiment of the present invention is a ridge formation device that is attached to the front wheels of a vehicle capable of traveling in a field, and comprises a mounting part that is attached to the front wheels, and a ridge side forming body that is provided on the mounting part and forms the side surfaces of the ridge as it rotates.

[0009] In addition, the ridge formation system according to an embodiment of the present invention comprises a ridge formation device which is attached to the front wheels of a vehicle capable of traveling in a field, and a front work device which is attached to the front side of the vehicle, the front work device performing ridge cutting work in front of the ridge formation device. Effect of the Invention

[0010] According to the embodiment of the present invention, the burden on the worker can be reduced. [Brief description of the drawings]

[0011] [Figure 1] 1 is a plan view of a tractor with a ridge forming device according to one embodiment of the present invention attached thereto. [Diagram 2] FIG. 2 is a side view of the tractor with the ridge forming device attached. [Diagram 3] This is a partial plan view of the same ridge forming device (when the ridge side forming body is in working state). [Figure 4] This is a partial plan view of the coil spring when it is slightly compressed from the state shown in Figure 3 (when the ridge side forming body is in an operational state). [Diagram 5] This is a partial plan view of the above-mentioned ridge forming device (when the ridge side forming body is not in operation). [Figure 6] FIG. [Figure 7] FIG. 2 is a partial end view of the ridge side forming body of the ridge forming device. [Figure 8] FIG. 2 is a partial end view of a modified example of the same ridge side forming body. [Figure 9]This is a front view of a tractor equipped with a ridge forming system consisting of the same ridge forming device and front work device (when the cutting body is not in working state). [Figure 10] FIG. 2 is a front view of the tractor with the ridge formation system attached (when the cutting body is in working condition). [Figure 11] FIG. 11 is a partially enlarged view of FIG. [Figure 12] FIG. 1 is a plan view of a tractor with a conventional ridge forming tool attached thereto. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] One embodiment of the present invention will be described with reference to FIGS.

[0013] In Figs. 1 and 2, reference numeral 11 denotes a tractor which is a vehicle, and this tractor 11 is an agricultural tractor which can travel in farm fields such as rice paddies.

[0014] The tractor 11 has a tractor body 12, which is the main body having an engine and a transmission, which are driving sources not shown, and at the front of this tractor body 12, a rotating shaft 13, which is the left and right front axles that rotate (driven rotation) based on power from the engine, is rotatably provided.

[0015] A front wheel 15 that rotates integrally with the rotating shaft 13 is attached to the outer end, which is the axial end, of each rotating shaft 13. Each of the left and right front wheels 15 has a wheel portion 16 and a tire portion 17 attached to the outer periphery of the wheel portion 16. Note that the front wheels 15 are not limited to those that are forcibly driven to rotate based on power from the engine, and may be, for example, non-driven wheels.

[0016] Left and right rear wheels 20 and a PTO shaft (not shown), which rotate based on power from the engine, are rotatably provided at the rear of the tractor body 12. Furthermore, a three-point linkage hitch section (work equipment lifting support section) is provided at the rear end of the tractor body 12, but a ridge forming device 21 is detachably attached not to this three-point linkage hitch section (not shown) but to one of the left and right front wheels 15 (15L, 15R), i.e., for example, the right front wheel 15R.

[0017] The ridge forming device (ridge forming device) 21 is an attachment for forming ridges that is detachably attached to the front wheels 15R of a tractor 11 that can travel in a farm field.

[0018] As shown in Figures 3 to 5, the ridge forming device 21 comprises a hollow mounting portion 23 that is detachably attached to the wheel portion 16 of the right front wheel 15R of the tractor 11, and a truncated cone-shaped ridge side forming body 24 that is provided on this mounting portion 23 and rotates (driven rotates) in a predetermined rotational direction together with the front wheel 15R of the tractor 11 around the left-right rotation center axis X to form the ridge side.

[0019] The ridge side forming body 24 can be selectively changed between a working state in which it is located at a working position away from the front wheels 15R to the outside, and a non-working state (storage state) in which it is located at a non-working position (storage position) close to the front wheels 15R.

[0020] The ridge forming device 21 also includes a cylinder (electric hydraulic cylinder, electric cylinder, etc.) 26 which is an extendable drive unit for changing the ridge side forming body 24 between a working state and a non-working state, an operation unit (remote control, mobile terminal, etc.) 27 operated by an operator (not shown) sitting in the driver's seat in the driver's section 14 of the tractor 11, and a control unit 28 which controls the cylinder 26 based on the operation of the operation unit 27 by the operator. Note that power is supplied to the control unit 28 and the cylinder 26 from a power source unit 29 such as a battery.

[0021] Here, the mounting portion 23 has a first member 31 that is removably attached to the outer surface side of the wheel portion 16 of the front wheel 15R by a plurality of mounting fixtures (bolts, nuts, etc.) 30, and a second member 32 that is movable in the left-right direction relative to this first member 31.

[0022] The first member 31 has a disk-shaped base portion 33 and a cylindrical cover portion 34 provided on the outer peripheral end of the base portion 33. The base portion 33 is fixedly attached by a mounting fixture 30 to the outer surface of a plate portion 36, the inner surface of which is fixed to a hub surface 35 of the wheel portion 16 of the front wheel 15R.

[0023] The base portion 33 is provided with a plurality of round bar-shaped shaft portions 38 that are elongated in the left-right direction, and a coil spring 40, which is a biasing member that biases the second member 32 outward (toward the right), is attached to the outer periphery of each shaft portion 38. In other words, the plurality of coil springs 40 are elastic members that bias the ridge side forming body 24 in the working state toward the ridge side (outward side) so that the ridge side forming body 24 in the working state is pressed against the ridge side with a predetermined pressing force during work. A cylinder mounting portion 56 is provided to protrude from the base portion 33.

[0024] The second member 32 has a disk-shaped mounted portion 41 and a cylindrical cover portion 42 that is provided on the mounted portion 41 and is slidable along the outer circumferential surface of the cover portion 34 of the first member 31 .

[0025] The mounting portion 41 is formed with a plurality of shaft holes 43 and is provided with the same plurality of cylindrical guide portions 44. The shaft portion 38 of the first member 31 is inserted into the shaft hole 43 through the guide portions 44, and a nut 45 for preventing the shaft portion 38 from coming off is screwed onto the tip portion of the shaft portion 38.

[0026] In addition, when the ridge side forming body 24 is not in operation, the tip portion 44a of the guide portion 44 abuts against the base portion 33 of the first member 31, and the entire compressed coil spring 40 is stored within the guide portion 44 (see Figure 5).

[0027] Furthermore, one cylinder hole 46 is formed in the mounting portion 41, and a cylinder mounting portion 47 is provided nearby. The cylinder mounting portion 47 has opposing plates 48 that face each other at a distance, and both opposing plates are formed with long holes 49 that are elongated in the left-right direction. A pin 50, which is a sliding member that can slide along the long hole 49, is inserted into a pin hole 53 at the tip of a rod 52 that is inserted into the central cylinder hole 46.

[0028] In other words, the cylinder 26, which is the driving part, has a cylinder body 51 and a rod 52 that moves in and out of this cylinder body 51, and the tip of this rod 52 is attached to the cylinder mounting part 47 of the second member 32 via a pin 50, and the base end of the cylinder body 51 is attached to the cylinder mounting part 56 of the first member 31 via a pin 55.

[0029] During operation, the extension action of the cylinder 26 based on the control of the control unit 28 causes the second member 32 to move outward (to the right) relative to the first member 31, and as a result, the furrow side forming body 24 moves to a predetermined working position and enters a working state (see Figure 3).

[0030] During this operation, when the ridge side forming body 24 in the working state moves inward (leftward) due to the force it receives from the ridge side, the coil spring 40 is compressed in response to this movement (see FIG. 4). At this time, since the pin 50 slides along the long hole 49, the cylinder 26 is not affected in any way and remains in the extended state.

[0031] On the other hand, when not in use, the second member 32 moves inward (to the left) relative to the first member 31 due to the contraction action of the cylinder 26 based on the control of the control unit 28, and as a result, the furrow side forming body 24 moves to a predetermined non-working position and enters a non-working state (see Figure 5).

[0032] 3 to 5, in addition to a part of the cylinder 26, the control unit 28, the power supply unit 29, and a plurality of coil springs 40 are stored and arranged inside the cover parts 34, 42 of the mounting part 23. That is, for example, the hollow mounting part 23 has therein a storage chamber (storage space) 54 whose size changes according to the movement of the second member 32 relative to the first member 31, and at least the coil springs 40 are stored and arranged in this storage chamber 54.

[0033] 6 and 7, the ridge side forming body 24 forms an inclined ridge side by rotating in a predetermined direction about a rotation center axis (rotation fulcrum) X together with the front wheel 15R and the mounting part 23 when the front wheel 15R of the tractor 11 rotates. The rotation center axis X of the ridge side forming body 24 is a straight line passing through the axis of the rotating shaft 13 of the tractor 11.

[0034] The illustrated outer diameter of the ridge side forming body 24 is slightly larger than the outer diameter of the front wheel 15R of the tractor 11, but may be, for example, approximately the same size. Also, for example, the outer diameter of the ridge side forming body 24 may be configured to be changeable.

[0035] The ridge side forming body 24 has a base member 61 attached to the mounting portion 41, for example by a plurality of bolts 59 and nuts 60 inserted into bolt holes 58 in the mounting portion 41 of the second member 32 of the mounting portion 23, and a plurality of fan-shaped, plate-shaped ridge side forming members 62 provided on this base member 61 and positioned radially around the central axis of rotation X.

[0036] The number of plate-shaped ridge side surface forming members (ridge side surface forming plates) 62 is preferably, for example, 6 or more. The material of the ridge side surface forming members 62 is preferably, for example, a metal such as stainless steel, but may be any material such as resin or rubber.

[0037] The base member 61 has a disk-shaped mounting plate portion 63, which is detachably bolted to the mounting portion 41 of the second member 32. The base member 61 also has a truncated cone-shaped base portion 64, to which the ridge side surface forming member 62 is detachably attached.

[0038] A disk-shaped mounting portion 65 to which a ridge top surface forming body (upper surface roller) 70, which will be described later, can be attached is provided at the reduced diameter end of the base portion 64. This mounting portion 65 is formed with a plurality of screw holes 65a into which bolts (not shown) for mounting the ridge top surface forming body 70 to the mounting portion 65 are screwed.

[0039] Each ridge side forming member 62 has a contact surface (large diameter portion) 66 on the rear side in the direction of rotation that comes into contact with the soil on the ridge side when rotating and compacts the soil by pushing it toward the ridge side, and has a non-contact surface (small diameter portion) 67 on the front side in the direction of rotation that does not come into contact with the soil on the ridge side when rotating.

[0040] In other words, each of the multiple ridge side forming members 62 lined up in the circumferential direction of the ridge side forming body 24 has a contact surface (working surface) 66 at the rear part in the rotation direction, which is a working surface that compacts and repairs the soil on the ridge side of the original ridge while rotating in a predetermined direction, and forms the ridge side of the new ridge. Note that the ridge side forming body 24 is not limited to a configuration having multiple such separate ridge side forming members (divided pieces) 62, and may have a configuration having a single ridge side forming member formed into a truncated cone shape (truncated cone shape), for example, and the configuration is arbitrary.

[0041] The ridge side forming members 62 are arranged so that the distance from the rotation center axis X gradually increases from the front end in the rotation direction to the rear end in the rotation direction. Of the two adjacent ridge side forming members 62, a step portion 68 of a predetermined height exists between the rear end in the rotation direction of one ridge side forming member 62 and the front end in the rotation direction of the other ridge side forming member 62.

[0042] In the illustrated example, the boundary line (step portion) A between adjacent ridge side forming members 62 is a straight line located along a line (radial direction of the ridge side forming member) perpendicular to the rotation center axis X when viewed from the side (see Figure 2), but is not limited to this and may be, for example, a curved line that is curved so that the expanded diameter side is located at the front or rear side of the rotation direction.

[0043] Also, as shown by the two-dot chain line in FIG. 1, a cylindrical ridge top surface forming body (upper surface roller) 70 that forms a ridge top surface while rotating around the rotation center axis X together with the ridge side surface forming body 24 may be detachably attached to the mounting portion 65 on the reduced diameter end side of the ridge side surface forming body 24. That is, the ridge forming device 21 may be equipped with the ridge side surface forming body 24 and the ridge top surface forming body 70 provided on the reduced diameter end side of the ridge side surface forming body 24. Note that the ridge top surface forming body 70 is not limited to one that rotates around the rotation center axis X together with the ridge side surface forming body 24, and may be configured to rotate around an axis that is offset from the rotation center axis X, for example. Furthermore, in a plan view, the inclination angle α of the ridge side surface forming member 62 with respect to the front-rear direction (the bottom surface of the truncated cone) is preferably, for example, 15° to 45°.

[0044] Next, a case where ridge forming work (ridge repair work) is performed by the tractor 11 having the above-mentioned ridge forming device 21 attached to the right front wheel 15R will be described.

[0045] An operator in the driver's seat of the tractor 11 operates the operating unit 27 to set the furrow side forming body 24 to the working state.

[0046] Then, with the ridge side surface forming body 24 in the working state pressed against the ridge side surface of the main ridge by utilizing the elastic restoring force of the coil spring 40, the tractor 11 is caused to travel forward in the travel direction along the main ridge.

[0047] Then, the ridge side surface forming body 24 in the working state rotates in a predetermined direction around the rotation center axis X together with the front wheels 15R of the tractor 11, repairing the original ridge and forming the ridge side surface of the new ridge. In other words, the soil on the ridge side surface of the original ridge is compacted by pressure by the contact surfaces 66 of the multiple ridge side surface forming members 62, forming a strong ridge side surface of the new ridge.

[0048] Furthermore, such a ridge forming device 21 comprises an attachment part 23 that is attached to the outer surface side of the front wheel 15R of the tractor 11, and a ridge side forming body 24 that is attached to the attachment portion 41 of the second member 32 of this attachment part 23 and forms the ridge side of the new ridge while rotating together with the front wheel 15R of the tractor 11.As a result, not only can it be manufactured relatively inexpensively with a simple configuration that does not use a PTO shaft, but it can also shorten the unworked areas that occur in corners of the field, etc., compared to conventional configurations such as the one shown in Figure 12, thereby reducing the burden on the worker.

[0049] Moreover, since the front wheels 15R of the tractor 11 are smaller than the rear wheels 20, the ridge forming device 21 can be made smaller and the manufacturing costs can be reduced.

[0050] In addition, the ridge side forming body 24 can be selectively changed between a working state in which it is located at a working position away from the front wheels 15R of the tractor 11 and a non-working state in which it is located at a non-working position in close proximity to the front wheels 15R of the tractor 11.Therefore, by changing the ridge side forming body 24 from a working state to a non-working state, the ridge side forming body 24 can be easily moved away from the ridge side of the new ridge, preventing problems such as the ridge side forming body 24 collapsing the new ridge.

[0051] Furthermore, since it is equipped with a cylinder 26 for selectively changing (switching) the ridge side forming body 24 between such a working state and a non-working state, an operating unit 27 operated by an operator riding on the tractor 11, and a control unit 28 for controlling the cylinder 26 based on the operator's operation of the operating unit 27, the state of the ridge side forming body 24 can be changed more easily than in a configuration in which the operator manually changes the state of the ridge side forming body 24, and the burden on the operator can be further reduced.

[0052] In addition, since the multiple coil springs 40 for biasing the ridge side forming body 24 toward the ridge side are stored and arranged in a storage chamber 54 within the mounting portion 23, soil can be appropriately prevented from adhering to the coil springs 40.

[0053] Furthermore, the ridge side forming body 24 has an attachment portion 65 to which a ridge top surface forming body 70 can be attached, which forms the ridge top surface while rotating together with the ridge side forming body 24, so that the ridge top surface forming body 70 can be attached to the attachment portion 65 and used as required.

[0054] In the above embodiment, the ridge forming device 21 has been described as a right-only device that is attached to the right front wheel 15R of the tractor 11 and used, but it may also be a left-only device that is attached to the left front wheel 15L and used, for example.

[0055] Furthermore, for example, when the ridge side forming body 24 shown in Figure 8 is used, it can be used on either the left or right side, and the ridge forming device 21 can be attached to the right front wheel 15R or the left front wheel 15L. Each ridge side forming member 62 in the ridge side forming body 24 shown in Figure 8 differs from that in Figure 7 in that it has a contact surface (large diameter part) 66 on the central side in the direction of rotation, and a non-contact surface (small diameter part) 67 on each of the front and rear ends in the direction of rotation.

[0056] On the other hand, as shown in Figures 9 to 11, in addition to the ridge forming device 21 which is attached to the outer surface side of the front wheels 15 of the tractor 11, a front work device 71 which is attached to the front side of the tractor body 12 of the tractor 11 may also be used in combination.

[0057] In other words, by using a ridge formation system S consisting of a ridge formation device 21 and a pre-work device 71, ridge cutting work (pre-processing) can be performed by the pre-work device (pre-treatment unit) 71 prior to the ridge formation work by the ridge formation device 21.

[0058] The front working device 71 performs ridge scraping work in front of the ridge side forming body 24 of the ridge forming device 21, and is equipped with, for example, a disk-shaped ridge upper surface scraping body 72 that scrapes the ridge upper surface while rotating (driven rotation) by force received from the ridge side, and a disk-shaped ridge side surface scraping body 73 that scrapes the ridge side while also rotating (driven rotation) by force received from the ridge side. Note that a plurality of notched recesses 72a, 73a aligned in the circumferential direction are formed on the outer periphery of both scraping bodies 72, 73.

[0059] In addition, both scraping bodies 72, 73 are attached to the tip side of a support part 76 which can rotate in the vertical direction around a rotation central axis (rotation fulcrum) 75 with respect to a base part 74 attached to the tractor 11. Then, by the extension operation of a cylinder 77 which is a drive part, both scraping bodies 72, 73 rotate together with the support part 76 to a working position and enter a working state, while on the other hand, by the contraction operation of the cylinder 77, both scraping bodies 72, 73 rotate together with the support part 76 to a non-working position (storage position) and enter a non-working state (storage state). The cylinder 77 can be remotely controlled by, for example, the operator operating the operation part 27.

[0060] Furthermore, the support part 76 has a first support member 81 having a lengthwise shape with a plurality of adjustment holes 81a formed therein, and a second support member 82 having a lengthwise shape with a plurality of adjustment holes 82a formed therein. The vertical positions (height positions) of both scraping bodies 72, 73 can be adjusted by selecting the adjustment hole 81a of the first support member 81 into which the detachable pin 83 is inserted. The left-right positions of both scraping bodies 72, 73 can be adjusted by selecting the adjustment hole 82a of the second support member 82 into which the detachable pin 84 is inserted. In other words, by adjusting the working positions of the scraping bodies 72, 73, the amount of scraping can be adjusted according to the field conditions, such as the size of the base ridge and the soil quality.

[0061] When the ridge formation system S is used, as shown in Fig. 11, the ridge top surface scraper 72 in the working state scrapes the ridge top surface (ridge shoulder including the ridge top surface) of the original ridge while rotating, and the ridge side surface scraper 73 in the working state scrapes the ridge side surface of the original ridge while rotating. As a result, the soil scraped by both scrapers 72, 73 is supplied to the rear ridge side surface forming body 24 side, and the supplied soil is compacted by the ridge side surface forming body 24 to form a stronger ridge side surface of the new ridge.

[0062] Although both scraping bodies 72, 73 are rotated by the force received from the ridge side as the tractor 11 moves, they may be forcibly rotated by the power from a drive source such as a motor.

[0063] In addition, in all of the above embodiments, the ridge side forming body and ridge top surface forming body of the ridge forming device are described as being driven to rotate by power from the front wheels of the tractor, but they may also be forcibly driven to rotate by power from a drive source such as a motor (for example, slip rotation in which the rotational speed of the ridge side forming body is greater than the rotational speed of the front wheels of the tractor).

[0064] Furthermore, the driving unit such as a cylinder that moves the ridge side forming body left and right is for changing the ridge side forming body between a working state and a non-working state, in other words, for changing the position of the ridge side forming body between the working position and the non-working position, but is not limited to this, and for example, it may be possible to change the position to an intermediate position between the two positions (adjusting the position in the left and right direction).In other words, for example, a configuration may be made in which the distance (distance K shown in Figure 3) between the front wheels of a traveling vehicle and the ridge side forming body is adjustable by a driving unit such as a cylinder that can be remotely controlled from the traveling vehicle side such as a tractor.

[0065] Furthermore, the ridge forming device is preferably attached to the front wheels of a traveling vehicle when in use, but it can also be attached to wheels other than the front wheels (for example, the rear wheels, etc.) when in use.

[0066] Furthermore, depending on the field conditions, for example, after work is performed using the ridge formation device or ridge formation system, further work (finishing work, etc.) may be performed using a conventional ridge painting machine (a ridge painting device attached to a three-point linkage hitch section and powered by a PTO shaft). [Explanation of symbols]

[0067] 11 Tractor as a vehicle 15 Front wheel 21 Ridge forming device 23 Mounting part 24 Ridge side formation 26 Cylinder as the driving part 27 Control section 28 Control Unit 40 Coil spring as a biasing member 54 Storage Room 65 Mounting part 71 Front working device 72 Ridge top surface scraper 73 Ridge side cutting body S Ridge Formation System

Claims

1. A ridge forming device that is attached to a front wheel of a vehicle that can travel in a farm field, A mounting portion attached to the front wheel; a ridge side surface forming body provided on the mounting portion and rotating to form a ridge side surface; A ridge forming device comprising:

2. The furrow side formation can be changed between a working state and a non-working state.

2. The ridge forming device according to claim 1.

3. The ridge side surface forming body can be changed between a working state in which it is located at a working position away from the front wheels of the traveling vehicle and a non-working state in which it is located at a non-working position close to the front wheels.

2. The ridge forming device according to claim 1.

4. A drive unit for changing the ridge side forming body into an operating state and a non-operating state; an operation unit operated by an operator riding on the traveling vehicle; a control unit that controls the drive unit based on an operation of the operation unit by the worker; 4. The ridge forming device according to claim 2 or 3, further comprising:

5. The mounting portion has a storage chamber therein, The storage chamber is provided with a biasing member for biasing the ridge side surface forming body toward the ridge side.

4. The ridge forming device according to claim 1,

6. The ridge side surface forming body has an attachment portion to which the ridge top surface forming body can be attached.

4. The ridge forming device according to claim 1,

7. A ridge forming device that is attached to a front wheel of a traveling vehicle that can travel in a farm field; a front working device attached to the front side of the traveling vehicle; The front working device performs a ridge cutting operation in front of the ridge forming device. A ridge formation system comprising:

8. The front working device is A ridge top surface scraping body for scraping the ridge top surface; and a ridge side scraping body for scraping the ridge side.

8. The ridge forming system according to claim 7.

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