A hanging milking cup with adjustable caliber

Abstract

The invention discloses a hanging milking cup with adjustable caliber, comprising a milking cup, wherein the lower surface of the milking cup is fixedly connected with a base, the outer surface of the base is provided with a plurality of evenly distributed No. 1 grooves, a stabilizing component is installed in the base, a top plate is installed on the stabilizing component, the top plate is located in the No. 1 groove, a mounting ring is fixedly connected at the edge of the upper surface of the milking cup, a caliber adjusting component is installed in the mounting ring, a flushing component is installed at the middle part of the inner wall of the base, a stirring plate is installed on the flushing component, and the stirring plate is located inside the milking cup. The invention provides a No. 1 bevel gear fixedly sleeved on the upper end of a rotating rod, a No. 2 bevel gear is connected to one side of the No. 1 bevel gear through tooth meshing, and the No. 2 bevel gear is sleeved on a rotating shaft, and the rotation of the rotating shaft can drive the baffle to rotate, and since the lengths of the two baffles are different, the effect of adjusting the caliber of the milking cup can be achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of milking cups, and in particular relates to a hanging milking cup with adjustable caliber. Background Art

[0002] Milking is an important part of bringing out the production potential of cows. Without skilled milking methods and patience, it is difficult to milk the required amount of milk. Milking methods are mainly manual milking and machine milking. For this purpose, application number: CN200580019002.4, the present invention relates to a milking cup liner and a milking cup. The milking cup liner (1) is installed in a shell (2) of a milking cup and defines an internal space (3) for accommodating a nipple. The milking cup liner includes a first component (12) forming a cylindrical portion. The first component includes a first peripheral portion (15), a first connecting ring (16) and a lip (17) defining an opening (4). The second component includes a second peripheral portion (18) and a second connecting ring (20). Through the mutual engagement of the connecting rings, the first component can be connected to the second component, thereby realizing the milking cup liner. At least one connecting ring is adjacent to the peripheral portion of another component so as to form a sealed abutment between the two components.

[0003] The above technology has the following problems: the existing milking cups are placed on the ground, and the cows may easily kick over the milking cups when they move during milking, causing the raw milk to spill; and the existing milking cups are all single-caliber cups that cannot be adjusted, so only cows of a single size can be milked, which reduces work efficiency. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a hanging milking cup with adjustable caliber, which has the advantages of protecting the milking cup and improving stability, and solves the problems that the existing milking cups are all placed on the ground, and the cows may easily kick over the milking cups when walking during the milking process, causing raw milk to spill, and the existing milking cups are all cups of a single caliber and cannot be adjusted, so that only cows of a single size can be milked, thereby reducing work efficiency.

[0005] The present invention is achieved in this way. A hanging milking cup with adjustable caliber includes a milking cup, a base is fixedly connected to the lower surface of the milking cup, a cavity is arranged inside the base, a plurality of evenly distributed No. 1 grooves are arranged on the outer surface of the base, a stabilizing component is installed in the base, a top plate is installed on the stabilizing component, the top plate is located in the No. 1 groove, a mounting ring is fixedly connected to the edge of the upper surface of the milking cup, a caliber adjustment component is installed in the mounting ring, a flushing component is installed in the middle of the inner wall of the base, a stirring plate is installed on the flushing component, and the stirring plate is located inside the milking cup.

[0006] As a preferred embodiment of the present invention, the stabilizing assembly includes a movable plate, a threaded ring is provided on one side of the movable plate, the threaded ring is connected to a threaded rod through threaded engagement, a No. 2 motor is fixedly connected to one side of the threaded rod, and the No. 2 motor is fixedly connected to the inner wall of the base.

[0007] As a preferred embodiment of the present invention, a limit rod is movably provided on the other side of the movable plate, the limit rod is fixedly connected between the inner walls of the base, a plurality of evenly distributed limit plates are fixedly connected to the outer surface of the movable plate, and a limit ring is rotatably installed on the outer surface of each limit plate.

[0008] As a preferred embodiment of the present invention, the outer side of each limiting ring is connected to a top plate by threaded engagement, each top plate is rotatably mounted with a mounting rod, and each mounting rod is fixedly connected between the inner walls of the No. 1 groove.

[0009] As a preferred embodiment of the present invention, the flushing assembly includes a liquid storage tank, the inner wall of the liquid storage tank is provided with a liquid storage chamber, the liquid storage tank is fixedly connected to the middle part of the inner wall of the base, a connecting rod is rotatably installed in the middle part of the upper surface of the liquid storage tank, a plurality of evenly distributed liquid holes are provided on the lower end surface of the connecting rod, a No. 3 motor is fixedly connected to the lower end of the connecting rod, and a protective cover is provided on the outer side of the No. 3 motor.

[0010] As a preferred embodiment of the present invention, a pressure pump is fixedly connected to one side of the inner wall of the liquid storage tank, the upper end of the connecting rod is connected to the liquid outlet tank, extension plates are fixedly connected on both sides of the liquid outlet tank, a stirring plate is fixedly connected to one side of the upper surface of the extension plates on both sides, and a nozzle is arranged on the other side of the upper surface of the extension plates on both sides.

[0011] As a preferred embodiment of the present invention, the caliber adjustment component includes a No. 2 groove, and the No. 2 groove is provided with a plurality of evenly distributed inner edges of the mounting ring, and two baffles of different lengths are provided above each of the No. 2 grooves, and each of the baffles is fixedly connected to the two side surfaces of the rotating shaft, and a No. 2 bevel gear is fixedly sleeved at one end of the rotating shaft. As a preferred embodiment of the present invention, the No. 2 bevel gear is connected to the No. 1 bevel gear through a snap-tooth meshing, and the No. 1 bevel gear is sleeved on the upper end of the rotating rod, and the rotating rod is rotatably mounted on the upper surface of the mounting ring, and a No. 1 gear is fixedly sleeved at the lower end of each rotating rod. As a preferred embodiment of the present invention, a gear ring is provided on the inner side of each No. 1 gear and the mounting ring, and the inner side of the gear ring is connected to the No. 1 gear through a snap-tooth meshing, and the outer side of the gear ring is connected to the No. 2 gear through a snap-tooth meshing, and the No. 2 gear is fixedly connected to the No. 1 motor output shaft, and the No. 1 motor is fixedly connected to the side surface of the milking cup.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention drives the threaded rod to rotate through the second motor. Since the threaded rod is connected with a thread ring through threaded engagement, the thread ring is arranged on one side of the movable plate, and a limit plate is installed on the other side of the movable plate, the movable plate can be driven to move up and down along the limit rod.

[0014] 2. The present invention fixes a limit plate on the outer surface of the movable plate, and a limit ring is rotatably installed on the outer side of the limit plate. The limit ring can play a role of limiting movement between the limit plates. Since the top plate is installed between the No. 1 grooves through the mounting rod, it can play a supporting role between the top plates, so that the top plate can rotate around the mounting rod.

[0015] 3. The present invention is rotatably installed in the middle of the upper surface of the liquid storage tank through a connecting rod, and the lower end of the connecting rod is fixedly connected to a No. 3 motor, and the No. 3 motor is fixedly connected to the inner wall of the liquid storage tank, which can drive the connecting plate to rotate, and the upper end of the connecting rod is fixedly connected to the liquid outlet tank, and the two sides of the connecting rod are fixedly connected to extension plates, and one side of the upper surface of the extension plates on both sides is fixedly connected to a stirring plate, which can mobilize the liquid storage tank to rotate.

[0016] 4. The present invention can deliver the cleaning liquid to the connecting rod through the liquid hole through the pressure pump, and the other side of the upper surface of the two side extension plates is provided with a nozzle, so that the cleaning liquid can be sprayed out through the nozzle to clean the inner wall of the milking cup, saving manual labor. 5. The present invention is provided with a No. 1 bevel gear through a fixed sleeve on the upper end of the rotating rod, and a No. 2 bevel gear is connected to one side of the No. 1 bevel gear through a latch gear meshing, and the No. 2 bevel gear is sleeved on the rotating shaft. The rotation of the rotating shaft can drive the baffle to rotate. Since the lengths of the two baffles are different, the effect of adjusting the caliber of the milking cup can be achieved. 6. The present invention drives the No. 2 gear to rotate through the No. 1 motor. The No. 2 gear is connected to the outside of the gear ring through a latch gear meshing. The gear ring is installed in the mounting ring, which can drive the gear ring located in the mounting ring to rotate. Since the inner side of the gear ring is connected to the No. 1 gear through a latch gear meshing, the No. 1 gear is sleeved on the rotating rod, which can drive the rotating rod to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic three-dimensional diagram of the overall structure provided by an embodiment of the present invention;

[0018] Figure 2 is a schematic three-dimensional diagram of a local structure provided by an embodiment of the present invention;

[0019] Figure 3 is a schematic three-dimensional diagram of the temperature component structure provided by an embodiment of the present invention;

[0020] Figure 4 is a schematic three-dimensional diagram of the structure of the aperture adjustment assembly provided by an embodiment of the present invention;

[0021] Figure 5It is a schematic three-dimensional diagram of the structure of the flushing component provided in an embodiment of the present invention.

[0022] In the figure: 1, milking cup; 2, base; 3, groove No. 1; 4, stabilizing assembly; 5, top plate; 6, mounting ring; 7, caliber adjustment assembly; 8, stirring plate; 9, flushing assembly; 301, motor No. 2; 302, threaded rod; 303, threaded ring; 304, limit rod; 305, movable plate; 306, limit plate; 307, limit ring; 308, mounting rod; 701, rotating rod; 702, bevel gear No. 1; 70 3. Gear No. 1; 704. Bevel gear No. 2; 705. Rotating shaft; 706. Baffle; 707. Gear ring; 708. Groove No. 2; 709. Gear No. 2; 710. Motor No. 1; 901. Extension plate; 902. Liquid outlet box; 903. Nozzle; 904. Connecting rod; 905. Liquid storage box; 906. Liquid hole; 907. Motor No. 3; 908. Protective cover; 909. Liquid storage chamber; 910. Pressure pump. DETAILED DESCRIPTION

[0023] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0024] The structure of the present invention is described in detail below in conjunction with the accompanying drawings.

[0025] like Figures 1 to 5 As shown, a hanging milking cup with adjustable caliber includes a milking cup 1, a base 2 is fixedly connected to the lower surface of the milking cup 1, a cavity is arranged inside the base 2, a plurality of evenly distributed No. 1 grooves 3 are arranged on the outer surface of the base 2, a stabilizing component 4 is installed in the base 2, a top plate 5 is installed on the stabilizing component 4, the top plate 5 is located in the No. 1 groove 3, a mounting ring 6 is fixedly connected to the edge of the upper surface of the milking cup 1, a caliber adjusting component 7 is installed in the mounting ring 6, a flushing component 9 is installed in the middle of the inner wall of the base 2, a stirring plate 8 is installed on the flushing component 9, and the stirring plate 8 is located inside the milking cup 1.

[0026] refer to Figure 3 The stabilizing component 4 includes a movable plate 305, a threaded ring 303 is provided on one side of the movable plate 305, the threaded ring 303 is connected to a threaded rod 302 through threaded engagement, a No. 2 motor 301 is fixedly connected to one side of the threaded rod 302, and the No. 2 motor 301 is fixedly connected to the inner wall of the base 2. A limit rod 304 is movably provided on the other side of the movable plate 305, and the limit rod 304 is fixedly connected between the inner walls of the base 2.

[0027] The above scheme is adopted: the threaded rod 302 is driven to rotate by the second motor 301. Since the threaded rod 302 is connected with the thread ring 303 through threaded engagement, the thread ring 303 is arranged on one side of the movable plate 305, and the limit plate 304 is installed on the other side of the movable plate 305, the movable plate 305 can be driven to move up and down along the limit rod 304.

[0028] refer to Figure 3 A plurality of evenly distributed limit plates 306 are fixedly connected to the outer surface of the movable plate 305, and a limit ring 307 is rotatably installed on the outer surface of each limit plate 306. The outer side of each limit ring 307 is connected to a top plate 5 through threaded engagement. Each top plate 5 is rotatably installed with a mounting rod 308, and each mounting rod 308 is fixedly connected to the inner wall of the No. 1 groove 3.

[0029] The above solution is adopted: the limit plate 306 is fixedly connected to the outer surface of the movable plate 305, and the limit ring 307 is rotatably installed on the outer side of the limit plate 306. The limit ring 307 can play a role in limiting the movement between the limit plates 306. Since the top plate 5 is installed between the first grooves 3 through the installation rod 308, it can play a supporting role between the top plates 5, so that the top plate 5 can rotate around the installation rod 308. Figure 5 The flushing assembly 9 includes a liquid storage tank 905, the inner wall of which is provided with a liquid storage chamber 909, the liquid storage tank 905 is fixedly connected to the middle of the inner wall of the base 2, a connecting rod 904 is rotatably installed in the middle of the upper surface of the liquid storage tank 905, a plurality of evenly distributed liquid through holes 906 are arranged on the lower end surface of the connecting rod 904, a No. 3 motor 907 is fixedly connected to the lower end of the connecting rod 904, and a protective cover 908 is arranged outside the No. 3 motor 907. The above scheme is adopted: the connecting rod 904 is rotatably installed in the middle of the upper surface of the liquid storage tank 905, and the No. 3 motor 907 is fixedly connected to the lower end of the connecting rod 904, and the No. 3 motor 907 is fixedly connected to the inner wall of the liquid storage tank 905, so that the connecting plate 904 can be driven to rotate, and the upper end of the connecting rod 904 is fixedly connected to the liquid outlet box 902, and the extension plates 901 are fixedly connected to both sides, and the stirring plates 8 are fixedly connected to one side of the upper surface of the extension plates 901 on both sides, so that the liquid storage tank 902 can be mobilized to rotate. refer to Figure 5 A pressure pump 910 is fixedly connected to one side of the inner wall of the liquid storage tank 905, and the upper end of the connecting rod 904 is connected to the liquid outlet tank 902. Extension plates 901 are fixedly connected on both sides of the liquid outlet tank 902. A stirring plate 8 is fixedly connected to one side of the upper surface of the extension plates 901 on both sides, and a nozzle 903 is arranged on the other side of the upper surface of the extension plates 901 on both sides.

[0030] By adopting the above scheme, the cleaning liquid can be transported to the connecting rod 904 through the liquid hole 906 by the pressure pump 910, and the other side of the upper surface of the two side extension plates 901 is provided with a nozzle 903, so that the cleaning liquid can be sprayed out through the nozzle 903 to clean the inner wall of the milking cup 1, saving manual labor.

[0031] refer to Figure 4 The caliber adjustment component 7 includes a No. 2 groove 708, and the No. 2 groove 708 is provided with a plurality of evenly distributed inner edges of the mounting ring 6. Two baffles 706 of different lengths are provided above each No. 2 groove 708, and each baffle 706 is fixedly connected to the two side surfaces of the rotating shaft 705. A No. 2 bevel gear 704 is fixedly sleeved at one end of the rotating shaft 705, and the No. 2 bevel gear 704 is connected to the No. 1 bevel gear 702 through a latching engagement, and the No. 1 bevel gear 702 is sleeved on the upper end of the rotating rod 701.

[0032] The above scheme is adopted: a No. 1 bevel gear 702 is fixedly sleeved on the upper end of the rotating rod 701, and a No. 2 bevel gear 704 is connected to one side of the No. 1 bevel gear 702 through a latching engagement, and the No. 2 bevel gear 704 is sleeved on the rotating shaft 705. The rotation of the rotating shaft 705 can drive the baffle 706 to rotate. Since the lengths of the two baffles 706 are different, the effect of adjusting the caliber of the milking cup can be achieved.

[0033] refer to Figure 4 The rotating rod 701 is rotatably mounted on the upper surface of the mounting ring 6, and a No. 1 gear 703 is fixedly sleeved at the lower end of each rotating rod 701. A gear ring 707 is arranged inside each No. 1 gear 703 and the mounting ring 6. The inner side of the gear ring 707 is connected to the No. 1 gear 703 through a latching gear meshing, and the outer side of the gear ring 707 is connected to a No. 2 gear 709 through a latching gear meshing. The No. 2 gear 709 is fixedly connected to the output shaft of the No. 1 motor 710, and the No. 1 motor 710 is fixedly connected to the surface of one side of the milking cup 1.

[0034] The above scheme is adopted: the No. 1 motor 710 drives the No. 2 gear 709 to rotate, the No. 2 gear 709 is connected to the outside of the gear ring 707 through the engagement of the latch teeth, and the gear ring 707 is installed in the mounting ring 6, which can drive the gear ring 707 to rotate in the mounting ring 6. Since the inner side of the gear ring 707 is connected to the No. 1 gear 703 through the engagement of the latch teeth, the No. 1 gear 703 is mounted on the rotating rod 701, which can drive the rotating rod 701 to rotate.

[0035] Working principle of the present invention:

[0036] When in use, the present invention drives the threaded rod 302 to rotate through the second motor 301. Since the threaded rod 302 is connected with the threaded ring 303 through threaded engagement, the threaded ring 303 is arranged on one side of the movable plate 305, and the limit plate 304 is installed on the other side of the movable plate 305, the movable plate 305 can be driven to move up and down along the limit rod 304. The limit plate 306 is fixedly connected to the outer surface of the movable plate 305, and the limit ring 307 is rotatably installed on the outer side of the limit plate 306. The limit ring 307 can play a role in limiting the movement between the limit plates 306. The mounting rod 308 is installed between the No. 1 grooves 3, so that the top plate 5 can be supported, and the top plate 5 can be rotated around the mounting rod 308. The connecting rod 904 is rotatably installed in the middle of the upper surface of the liquid storage tank 905, and the lower end of the connecting rod 904 is fixedly connected to the No. 3 motor 907, and the No. 3 motor 907 is fixedly connected to the inner wall of the liquid storage tank 905, so as to drive the connecting plate 904 to rotate, and the upper end of the connecting rod 904 is fixedly connected to the liquid outlet box 902, and the two sides are fixedly connected to the extension plates 901, and one side of the upper surface of the two extension plates 901 is fixedly connected to The stirring plate 8 can mobilize the liquid storage tank 902 to rotate, and the cleaning liquid can be transported to the connecting rod 904 through the liquid hole 906 by the pressure pump 910, and the other side of the upper surface of the extension plate 901 on both sides is provided with a nozzle 903, so that the cleaning liquid can be sprayed out through the nozzle 903 to clean the inner wall of the milking cup 1, saving manual labor, and a first bevel gear 702 is fixedly sleeved on the upper end of the rotating rod 701, and a second bevel gear 704 is connected to the first bevel gear 702 on one side through a tooth meshing, and the second bevel gear 704 is sleeved on the rotating shaft 705, and the rotating shaft 705 rotates The rotation can drive the baffle plate 706 to rotate. Since the lengths of the two baffle plates 706 are different, the effect of adjusting the caliber of the milking cup can be achieved. The No. 1 motor 710 drives the No. 2 gear 709 to rotate. The No. 2 gear 709 is connected to the outer side of the gear ring 707 through a card tooth meshing. The gear ring 707 is installed in the mounting ring 6, which can drive the gear ring 707 to rotate in the mounting ring 6. Since the inner side of the gear ring 707 is connected to the No. 1 gear 703 through a card tooth meshing, the No. 1 gear 703 is mounted on the rotating rod 701, which can drive the rotating rod 701 to rotate.

[0037] In summary, the hanging milking cup with adjustable caliber, through the cooperation between the temperature component 4, the caliber adjustment component 7 and the cleaning component 9, solves the problem that the existing milking cups are all placed on the ground, and the cows will easily kick over the milking cups when they walk during the milking process, causing the raw milk to spill, and the existing milking cups are all single-caliber cups that cannot be adjusted, so that only cows of a single size can be milked, reducing work efficiency.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hanging milking cup with adjustable caliber, comprising a milking cup (1), characterized in that: The lower surface of the milking cup (1) is fixedly connected to a base (2), the interior of the base (2) is provided with a cavity, the outer surface of the base (2) is provided with a plurality of evenly distributed No. 1 grooves (3), a stabilizing component (4) is installed in the base (2), a top plate (5) is installed on the stabilizing component (4), the top plate (5) is located in the No. 1 groove (3), a mounting ring (6) is fixedly connected to the edge of the upper surface of the milking cup (1), a caliber adjustment component (7) is installed in the mounting ring (6), the caliber adjustment component (7) comprises a No. 2 groove (708), the No. 2 groove (708) is provided with a plurality of evenly distributed No. 1 grooves (708) at the inner edge of the mounting ring (6), each No. 2 groove (708) having a plurality of evenly distributed No. 1 grooves (708) arranged on the inner edge of the mounting ring (6), ) is provided with two baffles (706) of different lengths above the rotating shaft (705), each of the baffles (706) being fixedly connected to the two side surfaces of the rotating shaft (705), one end of the rotating shaft (705) being fixedly sleeved with a second bevel gear (704), the second bevel gear (704) being connected to a first bevel gear (702) by means of a snap-on meshing, the first bevel gear (702) being sleeved on the upper end of the rotating rod (701), the rotating rod (701) being rotatably mounted on the upper surface of the mounting ring (6), the lower end of each rotating rod (701) being fixedly sleeved with a first gear (703), each of the first gears (703) and the mounting ring (6) being provided with a gear ring (707), the inner side of the gear ring (707) being engaged by means of a snap-on meshing The first gear (703) is connected to the second gear (709) on the outer side of the gear ring (707) through a tooth meshing connection, the second gear (709) is fixedly connected to the output shaft of the first motor (710), the first motor (710) is fixedly connected to the surface of one side of the milking cup (1), a flushing assembly (9) is installed in the middle of the inner wall of the base (2), the flushing assembly (9) comprises a liquid storage tank (905), the inner wall of the liquid storage tank (905) is provided with a liquid storage chamber (909), the liquid storage tank (905) is fixedly connected to the middle of the inner wall of the base (2), a connecting rod (904) is rotatably installed in the middle of the upper surface of the liquid storage tank (905), and the lower end surface of the connecting rod (904) is provided with a plurality of uniform The connecting rod (904) is provided with a third motor (907) at its lower end, and a protective cover (908) is provided on the outer side of the third motor (907). The flushing assembly (9) is provided with a stirring plate (8), and the stirring plate (8) is located inside the milking cup (1). A pressure pump (910) is fixedly connected to one side of the inner wall of the liquid storage tank (905). The upper end of the connecting rod (904) is connected to a liquid outlet tank (902), and extension plates (901) are fixedly connected to both sides of the liquid outlet tank (902). One side of the upper surface of the extension plates (901) on both sides is fixedly connected to the stirring plate (8), and the other side of the upper surface of the extension plates (901) on both sides is provided with a spray head (903).

2. A hanging milking cup with adjustable caliber as claimed in claim 1, characterized in that: The stabilizing assembly (4) comprises a movable plate (305), one side of the movable plate (305) is provided with a threaded ring (303), the threaded ring (303) is connected to a threaded rod (302) through threaded engagement, one side of the threaded rod (302) is fixedly connected to a second motor (301), and the second motor (301) is fixedly connected to the inner wall of the base (2).

3. A hanging milking cup with adjustable caliber as claimed in claim 2, characterized in that: A limit rod (304) is movably provided on the other side of the movable plate (305), and the limit rod (304) is fixedly connected between the inner walls of the base (2). A plurality of evenly distributed limit plates (306) are fixedly connected to the outer surface of the movable plate (305), and a limit ring (307) is rotatably mounted on the outer surface of each limit plate (306).

4. A hanging milking cup with adjustable caliber as claimed in claim 3, characterized in that: The outer side of each limiting ring (307) is connected to a top plate (5) via threaded engagement, and each top plate (5) is rotatably mounted with a mounting rod (308), and each mounting rod (308) is fixedly connected between the inner walls of the No. 1 groove (3).

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