EP1984570B1 - Ploughing apparatus - Google Patents

Ploughing apparatus Download PDF

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Publication number
EP1984570B1
EP1984570B1 EP07704844.5A EP07704844A EP1984570B1 EP 1984570 B1 EP1984570 B1 EP 1984570B1 EP 07704844 A EP07704844 A EP 07704844A EP 1984570 B1 EP1984570 B1 EP 1984570B1
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EP
European Patent Office
Prior art keywords
blade
joint
levers
spring member
blade structure
Prior art date
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Active
Application number
EP07704844.5A
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German (de)
French (fr)
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EP1984570A1 (en
EP1984570A4 (en
Inventor
Unto Martikainen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lametal Oy
Original Assignee
Lametal Oy
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Filing date
Publication date
Application filed by Lametal Oy filed Critical Lametal Oy
Publication of EP1984570A1 publication Critical patent/EP1984570A1/en
Publication of EP1984570A4 publication Critical patent/EP1984570A4/en
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Publication of EP1984570B1 publication Critical patent/EP1984570B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H5/00—Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
    • E01H5/04—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material
    • E01H5/06—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades
    • E01H5/063—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades by snow-plough blades tiltable for shock-absorbing purposes
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H5/00—Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
    • E01H5/04—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material
    • E01H5/06—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades
    • E01H5/061—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades by scraper blades
    • E01H5/062—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades by scraper blades by scraper blades displaceable for shock-absorbing purposes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/80—Component parts
    • E02F3/815—Blades; Levelling or scarifying tools

Definitions

  • the present invention relates to a ploughing apparatus comprising release mechanism.
  • the release mechanism is intended for turning the blade of a wing intended for the ploughing of solid material.
  • the turning of the blade is based on a single rigid joint and a single axial joint in a blade holder. This principle is used in ploughs, in which the angle between the blade and the ground is about 90°.
  • the US patent 3,808,714 with the title Double Bladed Snowplow with Overload Release presents an embodiment of a snowplow with a release mechanism.
  • the force created by the spring member keeps the joint and levers in place. Therefore, the force needed to push the first blade out of its working position grows gradually, thereby, creating excessive tension on the moving parts.
  • the spring member is a pneumatic cylinder. Because the arrangement uses a pneumatic cylinder and the force from the pneumatic cylinder is needed to keep the first blade in place, the arrangement does not work in case of failure. If a pipe is broken and the pneumatic cylinder is not able to create a pressure, the first blade will move out from its working position.
  • the blades are fixed to a blade holder with a swing for the case of impacts.
  • the release mechanism refers to the return of the blades of the plough to the initial position after an impact.
  • the blade must "yield" when the plough hits, for example, well covers and curbs.
  • the return to the initial position may be effected e.g. by means of a spring member.
  • the release method is a safety factor affecting the user and the working environment. Above all, it affects the ease of use and the serviceable life of the basic machine. Without the releasing of the blades, the structure of the basic machine is subjected to excessive loading.
  • the plough does not prod during driving, and the release method enables driving at higher speeds.
  • the aim of the invention is to articulate the blade so that the blade of a plough equipped with a blade angle smaller than 90° can be released when it hits an obstacle.
  • the returning is effected by a spring member.
  • the releasing force of the blade can be adjusted by changing the linear deviation of the pivots or by changing the thrust of the spring member. Particularly the mutual position of the pivots affects the force required for turning the blade. On one hand, the blade must not move and yield during normal ploughing, but on the other hand, the blade must move when it is subjected to a sufficiently great force. A corresponding function cannot be achieved by adjusting the spring member if it is, for example, a coil spring that is compressed or stretched by a force.
  • the blade is articulated by means of two separate levers which move the spring member and are moved when the blade holder moves.
  • the levers are articulated to each other by a movable joint.
  • the lowermost of the levers is articulated to the blade holder, and the uppermost lever is articulated to a frame structure, such as the wing, the wing support or another support structure integrated in the frame structure.
  • the spring member is articulated at the movable joint between the lowermost and the uppermost levers, and it moves with the levers upwards, away from the surface to be ploughed.
  • the joints of the spring member and the levers and their rotation axes are joined at and mounted to the lower end of the spring member.
  • the upper end of the spring member is movably supported to the frame structure, for example the wing support, in a suitable way.
  • the thrust/release force of the spring member can be altered.
  • the spring member is a compressible spring
  • its rigidity can be altered by pretensioning of the spring, that is, by changing the length of the spring.
  • the rigidity can be altered by changing the angle between the levers. The greater the angle, the greater the force initially required for turning the levers and moving the spring member, i.e., for releasing the mechanism.
  • the adjustment is made, for example, by moving the spring member higher or lower, wherein the position of the related joint is also changed.
  • the frame 1 of the apparatus constitutes, for example, a concave wing, which in this case constitutes a side-throwing wing.
  • the radius of curvature of the wing is smaller at one end and greater at the other end of the wing.
  • Figure 1 a show the same structure in a reduced manner.
  • the frame 1 is supported from the back by frame structures or a support profile 2, to which a number of other parts are coupled as needed, for example the means for coupling the apparatus to a working machine.
  • the support profile 2 simultaneously supports a spring member 3 which is connected to the frame 1, for example by means of the support profile 2.
  • the spring member 3 is vertical or slightly slanted, also in relation to the line 8.
  • An arm 4, which in this case is horizontal and extends backwards, is rigidly mounted to the frame structure, the frame 1 and/or the support profile 2, for example the lower surface of the support profile 2.
  • the arm 4 has a curved shape as shown in Fig. 3 , to receive the joint 10, wherein the structure can be made lower and the levers shorter.
  • a first lever 5 is coupled to the arm 4 by a joint 11, to rotate around a horizontal axis by means of the joint 11.
  • the joint 11 is at a distance from a joint 12 in the frame 1.
  • a joint 10 is placed between the joints 11 and 12.
  • the joint 12 is used to mount a blade holder 6 and a blade fixed in it to the frame 1.
  • the blade and the blade holder are also jointly called the blade structure, whose more detailed structure may vary.
  • the blade holder 6 can rotate by means of the joint 12 around a horizontal axis of rotation. By these means, the blade holder 6 can be returned to the normal position.
  • a second lever 7 is coupled to the blade holder 6 by a joint 9, to rotate around a horizontal axis by means of the joint 9.
  • the levers 5 and 7 in series are coupled to each other by the joint 10, to which the spring member 3 is also coupled in the example of Fig. 3 .
  • the joint 10 By means of the joint 10, the different parts can rotate around a horizontal axis of rotation.
  • the lever 7 is coupled to the frame 1 by means of the blade holder 6 and the lever 5.
  • the mutual position between the levers and the joints, as well as their numbers may vary, depending on the design.
  • the angle between the levers 5 and 7 on the side of the spring member 3 is slightly greater than 180°, for example 182° to 184°.
  • the joint 10 is placed higher than the straight line extending via the joints 9 and 11, so that the force of the obstacle effective on the blade holder 6 and on the arm 7 pushes the joint 10 upwards controlled by the lever 5, that is, it releases the blade.
  • the joint 10 is displaced off the ground or the surface to be ploughed when the plough is in the operating position.
  • the joint 11 is higher than the joint 9 and, for example, at the same level as the joint 12.
  • the joint 12 is typically between the joints 9 and 10, seen in the horizontal direction. If the spring member 3 is a coil spring, it is compressed.
  • the coil spring is typically equipped with a guide, around which the coil spring is placed and which is connected to both the joint 10 and the support profile 2. The coil spring returns the blade holder 6 to its initial position.
  • the spring member is a coil spring that is commonly available and has a simple design.
  • the spring member can also be a cylinder and an accumulator coupled to it, which receives and stores the medium coming from the cylinder and returns it to the cylinder to restore the position of the blade.
  • the cylinder and the accumulator make up a more complex system.
  • the force required for releasing the blade can be adjusted by deviating the position of the joint 10 between the levers 5 and 7 in relation to the line 8, that is, by adjusting the distance of the joint 10 from the line 8.
  • the normal position refers to the position of the blade during ploughing (for example, tilted backwards at an angle of 60°).
  • Figure 2 shows a plough in which the invention is applied.
  • the parts and levers of several release mechanisms are normally arranged pairwise next to each other, and a desired number of them is provided for each blade, for example two pairs, to achieve sufficient control.
  • Two or more levers of the same blade (lever 5 or lever 7) are connected to each other by a beam, to increase the rigidity.
  • the resisting force of the spring member increases continuously as the blade is turned, which loads the structures significantly even after an impact with an obstacle. If the blade is not to move all the time, for example the spring must be sufficiently tense, which, in turn, causes increasing loads on the structure as the blade turns and affects the spring member. If the maximum allowed load of the structure is 1.5 F, the spring member must be selected so that the blade starts to turn already at a force of 0.5 F, depending, for example, on the spring constant.
  • the presented examples and lever systems provide that the force in the force/time coordinate system has a clear short maximum peak at the beginning when the blade starts to turn, and after the releasing, the required force is considerably reduced and facilitates the turning of the blade, and the structures are not subjected to further loading.
  • the loading caused by the obstacle can be 1.5 F at the moment of releasing, because after that, the loading is reduced, for example to the level of 0.5 F.
  • the operation is based on a changing moment arm when the lever system is turned, wherein a greater and greater proportion of the force is also subjected to the spring member and not almost solely from one lever to another. The moment arm increases when the angle between the levers increases. The blade does not move unnecessarily during the operation, because the force required for the releasing is sufficiently great.
  • the apparatus to be used may be another apparatus in which a blade must avoid obstacles, such as a snow-plough or an apparatus intended for the ploughing of solid material, fixed in a ploughing automobile.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Scissors And Nippers (AREA)
  • Knives (AREA)
  • Soil Working Implements (AREA)

Description

  • The present invention relates to a ploughing apparatus comprising release mechanism.
  • The release mechanism is intended for turning the blade of a wing intended for the ploughing of solid material.
  • In known release mechanisms, the turning of the blade is based on a single rigid joint and a single axial joint in a blade holder. This principle is used in ploughs, in which the angle between the blade and the ground is about 90°.
  • In a structure where the blade angle deviates from this, it is not possible to release the blade. When a conical wing is used, i.e. the known wing shape, the angle of the blade against the ground deviates from 90°. When applying a conical wing and a blade angle of less than 90°, the plought becomes throwing, wherein the blade is tilted backwards.
  • The US patent 3,808,714 with the title Double Bladed Snowplow with Overload Release presents an embodiment of a snowplow with a release mechanism. The force created by the spring member keeps the joint and levers in place. Therefore, the force needed to push the first blade out of its working position grows gradually, thereby, creating excessive tension on the moving parts. Additionally, the spring member is a pneumatic cylinder. Because the arrangement uses a pneumatic cylinder and the force from the pneumatic cylinder is needed to keep the first blade in place, the arrangement does not work in case of failure. If a pipe is broken and the pneumatic cylinder is not able to create a pressure, the first blade will move out from its working position.
  • The blades are fixed to a blade holder with a swing for the case of impacts. The release mechanism refers to the return of the blades of the plough to the initial position after an impact. The blade must "yield" when the plough hits, for example, well covers and curbs. The return to the initial position may be effected e.g. by means of a spring member. The release method is a safety factor affecting the user and the working environment. Above all, it affects the ease of use and the serviceable life of the basic machine. Without the releasing of the blades, the structure of the basic machine is subjected to excessive loading. The plough does not prod during driving, and the release method enables driving at higher speeds.
  • The aim of the invention is to articulate the blade so that the blade of a plough equipped with a blade angle smaller than 90° can be released when it hits an obstacle. The returning is effected by a spring member.
  • This aim is achieved by a ploughing apparatus according to claim 1.
  • The releasing force of the blade can be adjusted by changing the linear deviation of the pivots or by changing the thrust of the spring member. Particularly the mutual position of the pivots affects the force required for turning the blade. On one hand, the blade must not move and yield during normal ploughing, but on the other hand, the blade must move when it is subjected to a sufficiently great force. A corresponding function cannot be achieved by adjusting the spring member if it is, for example, a coil spring that is compressed or stretched by a force.
  • The blade is articulated by means of two separate levers which move the spring member and are moved when the blade holder moves. The levers are articulated to each other by a movable joint. The lowermost of the levers is articulated to the blade holder, and the uppermost lever is articulated to a frame structure, such as the wing, the wing support or another support structure integrated in the frame structure. The spring member is articulated at the movable joint between the lowermost and the uppermost levers, and it moves with the levers upwards, away from the surface to be ploughed. The joints of the spring member and the levers and their rotation axes are joined at and mounted to the lower end of the spring member. The upper end of the spring member is movably supported to the frame structure, for example the wing support, in a suitable way.
  • The thrust/release force of the spring member can be altered. When the spring member is a compressible spring, its rigidity can be altered by pretensioning of the spring, that is, by changing the length of the spring. In particular, the rigidity can be altered by changing the angle between the levers. The greater the angle, the greater the force initially required for turning the levers and moving the spring member, i.e., for releasing the mechanism. The adjustment is made, for example, by moving the spring member higher or lower, wherein the position of the related joint is also changed.
  • In the following, the invention will be described in more detail by means of examples and with reference to the appended drawings, in which
    • Figs. 1a and 1b show a first example of the invention in a reduced principle,
    • Fig. 2 illustrates the application of the invention in a plough,
    • Fig. 3 shows an embodiment of the first example of the invention.
  • In the appended drawings, the same reference numerals refer to the same parts of the apparatus.
  • As shown in Fig. 3 , the frame 1 of the apparatus constitutes, for example, a concave wing, which in this case constitutes a side-throwing wing. The radius of curvature of the wing is smaller at one end and greater at the other end of the wing. Figure 1 a show the same structure in a reduced manner.
  • The frame 1 is supported from the back by frame structures or a support profile 2, to which a number of other parts are coupled as needed, for example the means for coupling the apparatus to a working machine. The support profile 2 simultaneously supports a spring member 3 which is connected to the frame 1, for example by means of the support profile 2. The spring member 3 is vertical or slightly slanted, also in relation to the line 8. An arm 4, which in this case is horizontal and extends backwards, is rigidly mounted to the frame structure, the frame 1 and/or the support profile 2, for example the lower surface of the support profile 2. The arm 4 has a curved shape as shown in Fig. 3, to receive the joint 10, wherein the structure can be made lower and the levers shorter. A first lever 5 is coupled to the arm 4 by a joint 11, to rotate around a horizontal axis by means of the joint 11. The joint 11 is at a distance from a joint 12 in the frame 1. A joint 10 is placed between the joints 11 and 12. The joint 12 is used to mount a blade holder 6 and a blade fixed in it to the frame 1. The blade and the blade holder are also jointly called the blade structure, whose more detailed structure may vary. The blade holder 6 can rotate by means of the joint 12 around a horizontal axis of rotation. By these means, the blade holder 6 can be returned to the normal position. A second lever 7 is coupled to the blade holder 6 by a joint 9, to rotate around a horizontal axis by means of the joint 9.
  • The levers 5 and 7 in series are coupled to each other by the joint 10, to which the spring member 3 is also coupled in the example of Fig. 3. By means of the joint 10, the different parts can rotate around a horizontal axis of rotation. The lever 7 is coupled to the frame 1 by means of the blade holder 6 and the lever 5. The mutual position between the levers and the joints, as well as their numbers may vary, depending on the design. In Fig. 3, the angle between the levers 5 and 7 on the side of the spring member 3 is slightly greater than 180°, for example 182° to 184°. In the embodiment of Fig. 1a, the joint 10 is placed higher than the straight line extending via the joints 9 and 11, so that the force of the obstacle effective on the blade holder 6 and on the arm 7 pushes the joint 10 upwards controlled by the lever 5, that is, it releases the blade. The joint 10 is displaced off the ground or the surface to be ploughed when the plough is in the operating position. The joint 11 is higher than the joint 9 and, for example, at the same level as the joint 12. The joint 12 is typically between the joints 9 and 10, seen in the horizontal direction. If the spring member 3 is a coil spring, it is compressed. The coil spring is typically equipped with a guide, around which the coil spring is placed and which is connected to both the joint 10 and the support profile 2. The coil spring returns the blade holder 6 to its initial position.
  • Typically, the spring member is a coil spring that is commonly available and has a simple design. The spring member can also be a cylinder and an accumulator coupled to it, which receives and stores the medium coming from the cylinder and returns it to the cylinder to restore the position of the blade. The cylinder and the accumulator make up a more complex system.
  • The force required for releasing the blade can be adjusted by deviating the position of the joint 10 between the levers 5 and 7 in relation to the line 8, that is, by adjusting the distance of the joint 10 from the line 8.
  • The normal position refers to the position of the blade during ploughing (for example, tilted backwards at an angle of 60°).
  • Figure 2 shows a plough in which the invention is applied. The parts and levers of several release mechanisms are normally arranged pairwise next to each other, and a desired number of them is provided for each blade, for example two pairs, to achieve sufficient control. Two or more levers of the same blade (lever 5 or lever 7) are connected to each other by a beam, to increase the rigidity.
  • In conventional systems, the resisting force of the spring member increases continuously as the blade is turned, which loads the structures significantly even after an impact with an obstacle. If the blade is not to move all the time, for example the spring must be sufficiently tense, which, in turn, causes increasing loads on the structure as the blade turns and affects the spring member. If the maximum allowed load of the structure is 1.5 F, the spring member must be selected so that the blade starts to turn already at a force of 0.5 F, depending, for example, on the spring constant.
  • The presented examples and lever systems, in turn, provide that the force in the force/time coordinate system has a clear short maximum peak at the beginning when the blade starts to turn, and after the releasing, the required force is considerably reduced and facilitates the turning of the blade, and the structures are not subjected to further loading. Thus, the loading caused by the obstacle can be 1.5 F at the moment of releasing, because after that, the loading is reduced, for example to the level of 0.5 F. The operation is based on a changing moment arm when the lever system is turned, wherein a greater and greater proportion of the force is also subjected to the spring member and not almost solely from one lever to another. The moment arm increases when the angle between the levers increases. The blade does not move unnecessarily during the operation, because the force required for the releasing is sufficiently great.
  • As shown in Fig. 1b , when the blade hits an obstacle 14, the blade holder 6 turns backwards. By means of the joints 9, 10 and 11, the force effective on the blade can be directed to the spring member 3, wherein the spring member 3 is tensioned. After the obstacle 14 has passed, the spring member 3 returns the blade holder 6 back to the normal position shown in Fig. 1a. Most expediently, the energy stored in the spring member 3 is used for returning the position.
  • Within the scope of the invention as defined by the appended claims, also arrangements different from the above-described situation are feasible; consequently, the apparatus to be used may be another apparatus in which a blade must avoid obstacles, such as a snow-plough or an apparatus intended for the ploughing of solid material, fixed in a ploughing automobile.

Claims (3)

  1. A ploughing apparatus comprising:
    - a frame structure (1), such as a ploughing wing or a ploughing wing support,
    - a blade structure (6) coupled to a lower part of the frame structure (1) by means of a joint (12), the blade structure (6) comprising a blade and a blade holder,
    - and a release mechanism connected to the blade structure (6) for turning the blade structure (6) backwards in the case of an impact with an obstacle, the release mechanism comprising:
    - two levers (5, 7) coupled in series by means of a movable joint (10) placed between the two levers (5, 7), wherein the first of said two levers (7) is articulated at its lower end to the blade structure (6) by means of a first joint (9) and the second of said two levers (5) is articulated at its upper end to the frame structure (1) by means of a second joint (11) which is placed higher than the first joint (9), wherein the movable joint (10) is placed higher in relation to the ground than a straight line (8) extending through the first and second joints (9, 11), such that the force of the obstacle effective on the blade structure pushes the movable joint (10) upwards,
    - a spring member (3) connected at its lower end to said movable joint (10) and at its upper end to the frame structure (1), wherein
    - a force effective on the blade structure (6) is transferred to the two levers (5, 7), and to the returning spring member (3), when an impact force effective on the blade structure (6) moves the blade structure (6) and the two levers (5, 7),
    characterized in that the second of said two levers (5) is coupled by means of the second joint (11) to a rigid lever (4) being rigidly mounted to the frame structure (1) and having a curved shape, inside which the movable joint (10) can be received.
  2. The ploughing apparatus according to claim 1, characterized in that the distance between the movable joint (10) and said straight line (8) is adjustable.
  3. The ploughing apparatus according to any of the claims 1 to 2, characterized in that the spring member (3) is a spring.
EP07704844.5A 2006-02-10 2007-02-09 Ploughing apparatus Active EP1984570B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20065102A FI119777B (en) 2006-02-10 2006-02-10 Triggering mechanism
PCT/FI2007/050074 WO2007090935A1 (en) 2006-02-10 2007-02-09 Release mechanism

Publications (3)

Publication Number Publication Date
EP1984570A1 EP1984570A1 (en) 2008-10-29
EP1984570A4 EP1984570A4 (en) 2012-05-30
EP1984570B1 true EP1984570B1 (en) 2016-08-03

Family

ID=35953701

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07704844.5A Active EP1984570B1 (en) 2006-02-10 2007-02-09 Ploughing apparatus

Country Status (6)

Country Link
EP (1) EP1984570B1 (en)
FI (1) FI119777B (en)
LT (1) LT1984570T (en)
PL (1) PL1984570T3 (en)
RU (1) RU2420626C2 (en)
WO (1) WO2007090935A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1401896B1 (en) * 2010-07-20 2013-08-28 Tricoli CUNETTE CLEANING MACHINE

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US660276A (en) 1900-07-18 1900-10-23 Akron Cultivator Company Spring cultivator-hoe.
DE1759683A1 (en) * 1968-05-27 1971-06-16 Baas Gmbh Dozer, in particular snow blade
DE1929177C3 (en) * 1969-06-09 1978-04-20 Reissinger, Gottfried, Dr., 8124 St Heinrich Road clearing device
CA1130556A (en) * 1978-12-08 1982-08-31 Gottfried Reissinger (Deceased) Street clearing device
US5185946A (en) * 1990-04-23 1993-02-16 Farrell Eugene A Plow assembly with flexible moldboard
JP3266580B2 (en) * 1999-06-07 2002-03-18 岩崎工業株式会社 Simple fixing mechanism of cutting edge for snow plow
SE524151C2 (en) * 2002-04-24 2004-07-06 Martin Flinkfeldt Snow plough, has scraper blade with angle adjustable via arrangement comprising link arms and device for returning blade to original position after striking object

Also Published As

Publication number Publication date
FI119777B (en) 2009-03-13
EP1984570A1 (en) 2008-10-29
RU2420626C2 (en) 2011-06-10
EP1984570A4 (en) 2012-05-30
FI20065102A0 (en) 2006-02-10
RU2008136393A (en) 2010-03-20
LT1984570T (en) 2016-11-10
PL1984570T3 (en) 2017-01-31
WO2007090935A1 (en) 2007-08-16
FI20065102A (en) 2007-08-11

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