Mid-mower for work vehicle

Abstract

The present invention relates to a mid-mower that can be mounted on a work vehicle and perform mowing work. The present invention provides a mid-mower for a work vehicle, the mid-mower comprising: a discharge cover that is hinge-coupled to a mower deck and located adjacent to a discharge port; a hinge part for hinge-coupling the mower deck to the discharge cover; and a support for supporting the discharge cover so that the discharge cover being rotated about the hinge part is maintained in an unfolded first orientation or a folded second orientation. The present invention has the effect of eliminating the inconvenience of changing and maintaining the orientation of the discharge cover and enhancing the convenience of a driver.

Description

Midmore for work vehicles

[0001] The present invention relates to a working machine, and more specifically to a mid-mower capable of performing mowing work when mounted on a work vehicle.

[0002] The work vehicle can perform necessary tasks by connecting various implements required for agricultural work.

[0003] An example of a mower is the mid-mower (or mid-mount mower).

[0004] FIG. 1 illustrates a conventional mid-more mounted on a work vehicle.

[0005] As illustrated in FIG. 1, the midmore (10) is mounted on the underside of the work vehicle (T) and is positioned between the front wheel (FW) and the rear wheel (RW).

[0006] The midmower (10) performs mowing work by receiving power through a power take-off (PTO) located at the bottom of the work vehicle (T).

[0007] The mid-mower (10) includes a mower deck (11) and a discharge cover (12), etc.

[0008] The moor deck (11) accommodates a blade (not shown) and has a discharge port (11-O) on one side for discharging grass cut by the blade.

[0009] The blade stored in the mower deck (11) rotates by power transmitted from the power take-off (PTO) of the work vehicle (T) and performs mowing work.

[0010] The discharge cover (12) is hinged to the moor deck (11) and positioned adjacent to the discharge port (11-0).

[0011] The discharge cover (12) sets the discharge direction of the grass cut by the blade, and prevents hard objects such as stones and branches, as well as grass, from flying toward the discharge port (11-O) when the blade rotates.

[0012] Meanwhile, the work vehicle (T) equipped with the midmore (10) is operated with both sides of the midmore (10) protruding because the width of the midmore (10) is greater than the width of the work vehicle (T).

[0013] For reference, one side of the midmore (10) equipped with the discharge port (11-O) has a longer outward protrusion length than the other side because the discharge cover (12) is attached to it.

[0014] When a work vehicle (T) equipped with such a midmore (10) is operated only with the discharge cover (12) unfolded depending on the operating environment, the following problems were encountered.

[0015] First, there is a risk that the discharge cover (12) may be damaged by trees or embankments located nearby during the perimeter work.

[0016] Second, when loading a midmore (10) or a work vehicle (T) equipped with a midmore (10) onto a transport vehicle, the width of the midmore (10) is considerable, making it difficult to load it directly into the cargo compartment of a small transport vehicle.

[0017] Third, in cases where the passageway is narrow, such as between trees or buildings in an orchard, or where one must enter a limited space such as a warehouse for storage, the work vehicle (T) equipped with the midmore (10) may not be able to access the midmore (10) due to the significant width of the midmore (10).

[0018] In the above operating environment, the width of the midmore (10) must be reduced.

[0019] To do this, it is necessary to lift the discharge cover (12) upward and operate it in a temporarily folded state.

[0020] FIG. 2 is a schematic diagram illustrated for reference to explain the case where the discharge cover (12) is operated in a folded state in a conventional mid-mower (10) mounted on a work vehicle (T).

[0021] As illustrated in FIG. 2, when the work vehicle (T) is operated with the discharge cover (12) folded, the midmower (10) is shaken by vibrations occurring during the operation of the work vehicle (T) or by the road surface conditions of the work site, and accordingly, the discharge cover (12) also shakes.

[0022] If the shaking of the discharge cover (12) gradually worsens, the discharge cover (12) may not be able to maintain its folded state and may be unfolded outward at a predetermined angle and then return to a folded state, or its position may be changed to a fully unfolded state.

[0023] In this process, if the discharge cover (12) is spread outward, the width of the midmore (10) expands, and the discharge cover (12) or the midmore (10) may be damaged by surrounding terrain features or structures.

[0024] Since damage to the discharge cover (12) or midmore (10) is a serious matter that not only increases the cost burden of maintenance but can also threaten the safety of the driver, driver intervention has traditionally been required to maintain the position of the discharge cover (12).

[0025] To explain in more detail, conventionally, in order to keep the discharge cover (12) in a folded state, the driver directly held the discharge cover (12) or pulled the string connected to the discharge cover (12) while performing mowing work or driving.

[0026] In this case, the following problems could arise.

[0027] First, as the driver must manually maintain the discharge cover (12) in a folded state, fatigue accumulation in the driver's wrist and arm muscles may occur, and work fatigue may increase.

[0028] Second, the driver's concentration is diverted from focusing solely on operating the work vehicle (T) to maintaining the folded state of the discharge cover (12), which reduces the risk of accidents.

[0029] As mentioned above, if excessive intervention by the driver occurs in a situation where the discharge cover (12) must be maintained in a folded state, it not only causes inconvenience to the driver but also cannot rule out the risk of safety accidents; therefore, it is necessary to consider a technical solution that can stably support the discharge cover (12).

[0030] [Prior Art Literature]

[0031] [Patent Literature]

[0032] (Patent Document 1) Japanese Registered Patent Publication No. 3854945

[0033] The present invention was conceived from consideration of a structure for firmly supporting the discharge cover of a midmore.

[0034] To achieve this purpose, a mid-mower (100) for a work device according to one embodiment of the present invention may include: a mower deck (110) having a discharge port on one side for discharging grass cut by the blade, which accommodates a blade for performing mowing work; a discharge cover (120) hinged to the mower deck (110) and positioned adjacent to the discharge port; a hinge portion (130) hinged to the mower deck (110) and the discharge cover (120); and a support portion (140) for supporting the discharge cover (120) so that the discharge cover (120), which rotates relative to the hinge portion (130), is maintained in a first unfolded position or a second folded position.

[0035] The support member (140) may include: a first bracket (141) installed on the discharge cover (120); a second bracket (142) installed on the moor deck (110); and a support link (143) connected between the first bracket (141) and the second bracket (142) to support the discharge cover (120).

[0036] The support link (143) may include: a body (143a) having a predetermined length; a first part (143b) disposed at one end of the two ends located along the longitudinal direction of the body (143a) and coupled to the first bracket (141); and a second part (143c) disposed at the other end of the two ends located along the longitudinal direction of the body (143a) and coupled to the second bracket (142).

[0037] The support link (143) may include a fastening member (143d) for connecting the first bracket (141) and the first part (143b), so that the body (143a) can rotate and move relative to the connection portion with the first bracket (141).

[0038] The support link (143) further includes a second elastic member (143d-S) coupled to wrap around at least a portion of the fastening member (143d) along the axial direction of the fastening member (143d), and the second elastic member (143d-S) can provide elastic force in the direction in which the discharge cover (120) moves to change from the first position to the second position.

[0039] The second bracket (142) includes a pair of side panels (142b, 142c) protruding to a predetermined height; and at least a portion of the support link (143) may be disposed between the pair of side panels (142b, 142c).

[0040] The second bracket (142) further includes a lower panel (142a) having a predetermined area and coupled to the upper surface of the moor deck (110); and the pair of side panels (142b, 142c) are each disposed at both ends of the lower panel (142a) and can be formed to extend perpendicularly to the lower panel (142a).

[0041] Each of the above pair of side panels (142b, 142c) comprises: a first locking groove (142b-1HH, 142c-1HH) formed to a predetermined depth along a horizontal line parallel to the lower panel (142a) toward the arrangement direction of the discharge cover (120); and a second locking groove (142b-2HH, 142c-2HH) formed to a predetermined depth along a horizontal line parallel to the lower panel (142a) toward the arrangement direction of the discharge cover (120), spaced downward from the first locking groove (142b-1HH, 142c-1HH). and a connecting member (142b-CB, 142c-CB) connecting the first locking groove (142b-1HH, 142c-1HH) and the second locking groove (142b-2HH, 142c-2HH); may be included.

[0042] The support link (143) is coupled to the second part (143c) and is a movable bar (143e) that can be caught in the first locking groove (142b-1HH, 142c-1HH) or the second locking groove (142b-2HH, 142c-2HH); It includes, when the moving bar (143e) is inserted into and caught in the first locking groove (142b-1HH, 142c-1HH), the discharge cover (120) is maintained in the first position, and when the moving bar (143e) is inserted into and caught in the second locking groove (142b-2HH, 142c-2HH), the discharge cover (120) is maintained in the second position, the first position is a state in which the discharge cover (120) is unfolded toward the outside of the moor deck (110), and the second position may be a state in which the discharge cover (120) is folded and bent at a predetermined angle toward the inside of the moor deck (110) from the first position.

[0043] The depth of the first locking groove (142b-1HH, 142c-1HH) may be provided deeper than the depth of the second locking groove (142b-2HH, 142c-2HH).

[0044] The inner end (EP-1) of the first locking groove (142b-1HH, 142c-1HH) and the inner end (EP-2) of the second locking groove (142b-2HH, 142c-2HH) may be arranged so as to be offset from each other based on a virtual vertical line (VL) perpendicular to the lower panel (142a).

[0045] The protruding portion (142b-P, 143b-P) protruding outwardly above the first locking groove (142b-1HH, 142c-1HH) is provided to protrude more than a virtual extension line (EL) that extends upward along the inclined surface of the connecting member (142b-CB, 142c-CB), and the protruding portion (142b-P, 142c-P) can guide the movement of the moving bar (143e) between the first locking groove (142b-1HH, 142c-1HH) and the second locking groove (142b-2HH, 142c-2HH).

[0046] As explained above, according to the present invention, the following effects can be derived.

[0047] First, as the discharge cover is designed with a structure that allows it to be firmly fixed, its position can be stably maintained even against vibrations or shocks transmitted during the operation of the work vehicle.

[0048] Second, it frees the driver from the hassle associated with changing and maintaining the position of the exhaust cover, thereby improving driver convenience.

[0049] Third, driver fatigue is reduced, and work concentration can be improved because the driver can focus solely on operating the work vehicle.

[0050] Fourth, as the driver's concentration on work improves, it is possible to respond quickly to emergencies caused by the surrounding environment, which can contribute to preventing safety accidents.

[0051] Ultimately, improving the working environment can contribute to improving work efficiency.

[0052] FIGS. 1 and 2 are reference drawings for explaining a conventional mid-mower mounted on a work vehicle.

[0053] FIG. 3 is a perspective view illustrating a work vehicle equipped with a mid-mower for a work vehicle according to one embodiment of the present invention.

[0054] FIG. 4 is a perspective view illustrating a mid-mower for a work vehicle according to one embodiment of the present invention.

[0055] FIG. 5 is an exploded perspective view illustrating a mid-mower for a work vehicle according to one embodiment of the present invention.

[0056] FIG. 6 is a reference diagram for explaining a second bracket in a mid-mower for a work vehicle according to one embodiment of the present invention.

[0057] FIG. 7 is a reference diagram for explaining a modified example of the second bracket shown in FIG. 6.

[0058] FIGS. 8 and 9 are reference diagrams for explaining the operation of the support member according to the change in the position of the discharge cover in the mid-mower for a work vehicle illustrated in FIG. 4.

[0059] Preferred embodiments according to the present invention are described with reference to the accompanying drawings, provided that for the sake of brevity, descriptions of well-known configurations are omitted or compressed as much as possible.

[0060] <Explanation of Mid-More for Work Vehicles>

[0061] FIG. 3 is a perspective view illustrating a work vehicle equipped with a midmore (hereinafter collectively referred to as 'midmore') for a work vehicle according to one embodiment of the present invention, FIG. 4 is a perspective view illustrating a midmore according to one embodiment of the present invention, and FIG. 5 is an exploded perspective view illustrating a midmore according to one embodiment of the present invention.

[0062] Referring to FIGS. 3 to 5, a midmower (100) according to one embodiment of the present invention includes a mower deck (110), a discharge cover (120), a hinge part (130), and a support part (140).

[0063] The mower deck (110) stores a blade for performing mowing work, and on one side is provided with a discharge port (not shown) for discharging grass cut by the blade.

[0064] This moor deck (110) may include a blade (not shown), a power transmission unit (111), a gearbox (112), a pulley unit (113), and a connecting unit (114), etc.

[0065] The blade is configured to perform mowing work and is stored in the mower deck (110).

[0066] The power transmission unit (111) receives power from the work vehicle (T).

[0067] The gearbox (112) is connected to the power transmission unit (111) and receives power from the power transmission unit (111).

[0068] The pulley unit (113) is connected to the gearbox (112) and receives power from the gearbox (112).

[0069] The pulley unit (113) is positioned on the upper surface of the moor deck (110) and is connected to a blade located inside the moor deck (110).

[0070] The pulley unit (113) operates the blade when it receives power through the power transmission unit (111) and the gearbox (112).

[0071] The connecting part (114) is configured to be connected to a connecting link (not shown) provided at the bottom of the work vehicle (T).

[0072] The discharge cover (120) is hinged to the moor deck (110) and positioned adjacent to the discharge port.

[0073] The discharge cover (120) includes an installation part (121) and a cover part (122).

[0074] The installation part (121) is positioned at one end of the moor deck (110) and hinge-connected to the moor deck (110) by a hinge part (130) to be described later.

[0075] The cover portion (122) is formed to extend outward from the installation portion (121) in a predetermined length, and is provided with a shape in which both sides are bent downward.

[0076] The cover portion (122) has a longitudinal end positioned lower than the installation portion (121) and has a shape that is slanted downward.

[0077] The hinge portion (130) hinges the moor deck (110) and the discharge cover (120).

[0078] The hinge portion (130) includes a hinge shaft (131) and a first elastic member (132).

[0079] A hinge shaft (131) is provided at the joint between the moor deck (110) and the discharge cover (120).

[0080] The hinge shaft (131) can be provided with a bolt to connect the moor deck (110) and the installation part (121).

[0081] A nut (CN) is fastened to the end of the hinge shaft (131) to securely connect the moor deck (110) and the discharge cover (120).

[0082] The first elastic member (132) is joined by wrapping around at least a portion of the hinge shaft (131) along the axial direction of the hinge shaft (131).

[0083] The first elastic member (132) is provided in the shape of a spring, wherein the first arm (132-1) extended at one end is positioned at the installation part (121), and the second arm (132-2) extended at the other end can be positioned on the moor deck (110) side.

[0084] For example, the first elastic member (132) may be a return spring (or torsion spring) in which the angle formed between the first arm (132-1) and the second arm (132-2) is pre-set.

[0085] In this case, the set angle formed between the first arm (132-1) and the second arm (132-2) of the first elastic member (132) may be an angle that can maintain a first position (P1, shown in FIG. 8) in which the discharge cover (120) is in an unfolded state (or a closed state).

[0086] When an external force is applied to change the discharge cover (120), which is in the second position (P2, illustrated in FIG. 9), to the first position (P1, illustrated in FIG. 8), the angle formed between the first arm (132-1) and the second arm (132-2) of the first elastic member (132) is restored to a set angle, and the discharge cover (120) returns to the position for taking the first position (P1, illustrated in FIG. 8), that is, to the original position.

[0087] The support member (140) is configured to support the discharge cover (120) so that the discharge cover (120), which rotates relative to the hinge member (130), is maintained in a first position (P1, illustrated in FIG. 8) or a second position (P2, illustrated in FIG. 9) that is unfolded.

[0088] The support member (140) includes a first bracket (141), a second bracket (142), and a support link (143).

[0089] The first bracket (141) is installed on the discharge cover (120).

[0090] The first bracket (141) includes a bottom panel (141a) and a pair of fastening parts (141b, 141c).

[0091] The floor panel (141a) has a predetermined area and is installed in the installation part (121).

[0092] The floor panel (141a) and the installation part (121) can be joined to each other by fastening screws (not shown) to the installation part.

[0093] Of course, the floor panel (141a) may be installed by applying a welding method to the installation part (121), but a screw fastening method may be more advantageous in terms of maintenance.

[0094] Each of the pair of fastening parts (141b, 141c) is formed extending from the bottom panel (141a), and is formed to protrude to a predetermined height while being perpendicular to the bottom panel (141a).

[0095] A pair of fastening parts (141b, 141c) are provided with a fastening hole (141-CH) through which a fastening member (143d) can pass to connect the first bracket (141) and the first part (143b) of the support link (143).

[0096] The second bracket (142) is installed on the moor deck (110).

[0097] The second bracket (142) includes a lower panel (142a) and a pair of side panels (142b, 142c).

[0098] The lower panel (142a) has a predetermined area and is installed on the upper surface of the moor deck (110).

[0099] The lower panel (142a) and the moor deck (110) can be joined to each other by fastening screws (not shown) at the installation portions.

[0100] Of course, the lower panel (142a) may be installed on the moor deck (110) by welding, but a screw fastening method may be more advantageous in terms of maintenance.

[0101] A pair of side panels (142b, 142c) are formed extending from the lower panel (142a), and are formed protruding to a predetermined height while being perpendicular to the lower panel (142a).

[0102] A pair of side panels (142b, 142c) are each disposed at both ends of the lower panel (142a), and at least a portion of a support link (143) is disposed between the pair of side panels (142b, 142c) that are spaced apart from each other.

[0103] Each of the pair of side panels (142b, 142c) includes a first locking groove (142b-1HH, 142c-1HH), a second locking groove (142b-2HH, 142c-2HH), and a connecting member (142b-CB, 142c-CB).

[0104] A detailed description of a pair of side panels (142b, 142c) will be provided later.

[0105] The support link (143) is configured to be connected between the first bracket (141) and the second bracket (142) to support the discharge cover (120).

[0106] The support link (143) includes a body (143a), a first part (143b), a second part (143c), a fastening member (143d), and a moving bar (143e).

[0107] The body (143a) has a predetermined length.

[0108] The width of the body (143a) is provided to be narrower than the spacing between a pair of fastening parts (141b, 141c).

[0109] The first part (143b) is positioned at one end of the two ends located along the longitudinal direction of the body (143a) and is coupled to the first bracket (141) by a fastening member (143d).

[0110] The first part (143b) is provided with a first through hole (143b-1H) through which a fastening member (143d) can pass.

[0111] The first through hole (143b-1H) provided in the first part (143b) and the fastening hole (141b-CH) provided in the first bracket (141) are connected, and the fastening member (143d) is connected through the first bracket (141), thereby allowing the support link (143) and the first bracket (141) to be connected.

[0112] The second part (143c) is positioned at the other end of the two ends located along the longitudinal direction of the body (143a) and is positioned on the second bracket (142) by the movable bar (143e).

[0113] The second part (143c) is provided with a second through hole (143c-2H) through which a moving bar (143e) can pass.

[0114] With the movable bar (143e) inserted into the second through hole (143c-2H), a coupling means (143e-CM) for connecting the second part (143c) and the movable bar (143e) may be fastened to at least one of the two ends of the movable bar (143e).

[0115] The fastening member (143d) is configured to connect the first bracket (141) and the first part (143b), such that the body (143a) can rotate and move relative to the connection point with the first bracket (141).

[0116] The fastening member (143d) can be provided as a bolt.

[0117] With the fastening member (143d) inserted into the first through hole (143b-1H) and the fastening hole (141-CH), a nut (143d-N) is attached to the end of the fastening member (143d) to firmly secure the connection between the support link (143) and the first bracket (141). The movable bar (143e) is attached to the second part (143c) so that it can be caught in the first locking groove (142b-1HH, 142c-1HH) or the second locking groove (142b-2HH, 142c-2HH).

[0118] The moving bar (143e) is inserted into the second through hole (143c-2H) and can move between the first locking groove (142b-1HH, 142c-1HH) and the second locking groove (142b-2HH, 142c-2HH) while connected to the support link (143). The support link (143) may further include a second elastic member (143d-S, shown in FIG. 9).

[0119] The second elastic member (143d-S) is joined by wrapping around at least a portion of the fastening member (143d) along the axial direction of the fastening member (143d).

[0120] The second elastic member (143d-S) can be provided in a spring shape.

[0121] The second elastic member (143d-S) applies elastic force in the direction (e.g., counterclockwise) in which the discharge cover (120) moves to change from the first position (P1, illustrated in FIG. 8) to the second position (P2, illustrated in FIG. 9).

[0122] Below, we intend to explain the support member (140), particularly the second bracket (142), in more detail with reference to the drawings.

[0123] <Additional explanation regarding the support section>

[0124] FIG. 6 is a reference diagram for explaining a second bracket in a midmore according to one embodiment of the present invention, and FIG. 7 is a reference diagram for explaining a modified example of the second bracket shown in FIG. 6.

[0125] Before providing a detailed description of the second bracket (142), since the pair of side panels (142b, 142c) included in the second bracket (142) have the same shape, the following description will specifically describe one of the pair of side panels (142b). The detailed description of the one side panel (142b) mentioned below serves as a substitute for the description of the remaining side panel (142c).

[0126] Referring to FIG. 6, the side panel (142b) of the second bracket (142) may include a first locking groove (142b-1HH), a second locking groove (142b-2HH), and a connecting member (142b-CB).

[0127] The first catch groove (142b-1HH) is formed in a shape that is recessed to a predetermined depth along a horizontal line parallel to the lower panel (142a) toward the arrangement direction of the discharge cover (120).

[0128] When the moving bar (143e) of the support link (143) is inserted into and caught in the first locking groove (142b-1HH), the discharge cover (120) can be maintained in a first position (P1, shown in FIG. 8) in which it is spread outward toward the moor deck (110).

[0129] Above the first locking groove (142b-1HH), a protruding portion (142b-P) protruding outwardly is provided, and the protruding portion (142b-P) is arranged to protrude beyond a virtual extension line (EL) that extends upward along the inclined surface of the connecting member (142b-CB).

[0130] The protrusion (142b-P) guides the movement of the moving bar (143e) between the first locking groove (142b-1HH) and the second locking groove (142b-2HH).

[0131] More specifically, the protrusion (142b-P) allows the moving bar (143e), which was moving upward along the connecting bar (142b-CB) when the position of the discharge cover (120) changes from the second position (P2, illustrated in FIG. 9) to the first position (P1, illustrated in FIG. 8), to move naturally toward the first locking groove (142b-1HH) without detaching from the side panel (142b) by the protrusion (142b-P). In other words, the protrusion (142b-P) performs the function of preventing the moving bar (143e) from detaching.

[0132] The second catch groove (142b-2HH) is spaced downward from the first catch groove (142b-1HH) and is formed in a shape that is recessed to a predetermined depth along a horizontal line parallel to the lower panel (142a) toward the direction of placement of the discharge cover (120).

[0133] When the moving bar (143e) is inserted into the second locking groove (142b-2HH) and locked, the discharge cover (120) can be bent at a predetermined angle toward the inner direction of the moor deck (110) and maintained in a second position (P2, shown in FIG. 9) in a folded state.

[0134] The inner end (EP-1) of the first locking groove (142b-1HH) and the inner end (EP-2) of the second locking groove (142b-2HH) are arranged offset from each other based on an imaginary vertical line (VL) perpendicular to the lower panel (142a).

[0135] More specifically, the depth (d1) of the first locking groove (142b-1HH) can be provided deeper than the depth (d2) of the second locking groove (142b-2HH).

[0136] Since the depth of the first locking groove (142b-1HH) is substantial, even if vibration or shock is transmitted to the midmower (100) during the operation of the work vehicle (T), the position of the discharge cover (120) can be prevented from changing against the driver's intention.

[0137] In the case of the second locking groove (142b-2HH), even though the depth is relatively shallow compared to the first locking groove (142b-1HH), the moving bar (143e) is pulled toward the inner end (EP-2) of the second locking groove (142b-2HH) by the load of the discharge cover (120) and the elastic force applied to the discharge cover (120) from the first elastic member (132) provided in the hinge part (130), so that the discharge cover (120) is sufficient to maintain the second position (P2, shown in FIG. 9).

[0138] The shape and arrangement structure of the first catch groove (142b-1HH) and the second catch groove (142b-2HH) can be determined by the angle between the moor deck (110) and the discharge cover (120) according to the position of the discharge cover (120).

[0139] The connecting member (142b-CB) connects the first locking groove (142b-1HH) and the second locking groove (142b-2HH).

[0140] The connecting member (142b-CB) is provided at an angle and can serve as a support when the moving bar (143e) moves between the first locking groove (142b-1HH) and the second locking groove (142b-2HH).

[0141] For reference, when an external force is applied to change the discharge cover (120) from a first position (P1, illustrated in FIG. 8) to a second position (P2, illustrated in FIG. 9) in which it is folded (or opened) at a predetermined angle inward, the moving bar (143e) comes out of the first locking groove (142b-1HH) and moves downward along the connecting bar (142b-CB).

[0142] When the moving bar (143e) reaches the upper surface of the mooring deck (110), an external force is applied to the discharge cover (120) to insert the moving bar (143e) toward the second locking groove (142b-1HH).

[0143] When the moving bar (143e) is inserted into the second locking groove (142b-2HH) and caught, the discharge cover (120) maintains the second position (P2, shown in FIG. 9) even after the external force acting on the discharge cover (120) is removed.

[0144] When changing the discharge cover (120) from the second position (P2, illustrated in FIG. 9) to the first position (P1, illustrated in FIG. 8), an external force is applied to the discharge cover (120) so that the moving bar (143e) can come out of the second locking groove (142b-2HH).

[0145] When the moving bar (143e) comes out of the second locking groove (142b-2HH), the discharge cover (120) naturally unfolds outward by the first elastic member (132) and attempts to assume the first position (P1, shown in FIG. 8).

[0146] The moving bar (143e) also moves along the connecting bar (142b-CB) toward the first locking groove (142b-1HH) and is inserted into the first locking groove (142b-2HH) to be locked.

[0147] When the moving bar (143e) is inserted into and caught in the first locking groove (142b-1HH), the discharge cover (120) maintains the first position (P1, shown in FIG. 8).

[0148] Consequently, the driver only needs to briefly intervene by applying an external force to the discharge cover (120) so that the moving bar (143e) can be inserted into or removed from the first locking groove (142b-1HH) or the second locking groove (142b-2HH).

[0149] Accordingly, the inconvenience of changing and maintaining the position of the discharge cover (120) is eliminated, and the driver's convenience can be improved.

[0150] Below, a modified example of the second bracket (142) will be briefly described with reference to FIG. 7.

[0151] Referring to FIG. 7, the side panel (142b) of the second bracket (142) may further include an extension portion (142b-EP).

[0152] The extension portion (142b-EP) is formed to extend downward obliquely from the upper portion of the side panel (142b).

[0153] The extension portion (142b-EP) can be spaced apart and parallel to the connecting member (142b-CB).

[0154] The gap between the extension part (142b-EP) and the connecting bar (142b-CH) is sufficient if it allows the moving bar (143e) to move.

[0155] The extension portion (142b-EP) provides a movement path for the moving bar (143e) together with the connecting bar (142b-CH), while preventing the moving bar (143e) from deviating from the movement path between the first locking groove (142b-1HH) and the second locking groove (142b-2HH).

[0156] One end of the extension portion (142b-EP) contacts the upper portion of the side panel (142b), and the other end may be spaced apart at a predetermined height from a virtual horizontal line (VHL) extending horizontally from the lower portion of the side panel (142b).

[0157] In this case, if it is necessary to detach the support link (143) from the second bracket (142) for maintenance of one component of the discharge cover (120) or the support member (140), the movable bar (143e) can be removed from the second bracket (142) through the gap between the extension part (142b-EP) and the virtual horizontal line (VHL).

[0158] However, since this is merely an example, it goes without saying that the length of the extended portion (142b-EP) may be increased or decreased depending on the implementation.

[0159] <General description of the operation of the support part>

[0160] FIGS. 8 and 9 are reference drawings for explaining the structure of the support member (140) that is changed according to the position of the discharge cover (120) in the midmore (100) shown in FIG. 4.

[0161] FIG. 8 illustrates a support member (140) when the discharge cover (120) is spread outward toward the moor deck (110), i.e., when maintaining the first position (P1).

[0162] As shown in FIG. 8, when the moving bar (143e) of the support link (143) is inserted into and caught in the first locking groove (142b-1HH), the fastening member (143d) of the support link (143) is spaced outward from the second bracket (142), and the discharge cover (120) assumes a first position (P1) in which it is spread outward from the moor deck (110).

[0163] The discharge cover (120) taking the first position (P1) can maintain the first position (P1) by means of the first elastic member (132) as well as the support member (140).

[0164] FIG. 9 illustrates a support member (140) when the discharge cover (120) is folded at a predetermined angle toward the inner side of the moor deck (110), i.e., maintaining a second position (P2).

[0165] As shown in FIG. 9, when the moving bar (143e) of the support link (143) is inserted and caught in the second locking groove (142b-2HH), the support link (143) is positioned between a pair of side panels (142b, 142c) and the fastening member (143d) is positioned close to the second bracket (142).

[0166] As the moving bar (143e) engages with the second locking groove (142b-2HH), the first bracket (141), which is coupled to the support link (143) by the fastening member (143d), moves closer to the second bracket (142), i.e., the moor deck (110), and the discharge cover (120), which was in the first position (P1), is lifted upward.

[0167] When the discharge cover (120) changes from the first position (P1) to the second position (P2), a counterclockwise force is applied by the second elastic member (143d-S) coupled to the fastening member (143d), and the moving bar (143e) is easily caught in the second locking groove (142b-2HH).

[0168] Even if the moving bar (143e) is inserted into the second locking groove (142b-2HH) and gets caught, the elastic force of the first elastic member (132) causes the discharge cover (120) to spread outward, but instead the applied force causes the moving bar (143e) to be pulled toward the inner end (EP-2) of the second locking groove (142b-2HH).

[0169] As the moving bar (143e) is caught in the second catch groove (142b-2HH) and its position is temporarily fixed, the discharge cover (120) can maintain the second position (P2) without driver intervention.

[0170] The embodiments described above are merely preferred examples of the present invention and may have various applications. Therefore, the present invention should not be understood as being limited only to the contents described above. Instead, the scope of the present invention should be understood as the separately described claims and their equivalents.

Claims

1. A mower deck (110) that stores a blade for performing mowing work and has a discharge port on one side for discharging grass cut by said blade; A discharge cover (120) hinged to the above moor deck (110) and positioned adjacent to the discharge port; A hinge portion (130) that hinge-connects the above moor deck (110) and the above discharge cover (120); and A support member (140) for supporting the discharge cover (120) so that the discharge cover (120), which rotates relative to the hinge member (130), is maintained in a first unfolded position or a second folded position; comprising Midmore (100) for work vehicles.

2. In Paragraph 1, The above support member (140) is, A first bracket (141) installed on the discharge cover (120); A second bracket (142) installed on the above moor deck (110); and A support link (143) connected between the first bracket (141) and the second bracket (142) to support the discharge cover (120); comprising Midmore (100) for work vehicles.

3. In Paragraph 2, The above support link (143) is, A body (143a) having a predetermined length; A first part (143b) disposed at one end of the two ends located along the longitudinal direction of the body (143a) and coupled to the first bracket (141); and A second part (143c) disposed at the other end of the two ends located along the longitudinal direction of the body (143a) and disposed on the second bracket (142); comprising Midmore (100) for work vehicles.

4. In Paragraph 3, The above support link (143) is, A fastening member (143d) for connecting the first bracket (141) and the first part (143b), wherein the body (143a) can rotate and move relative to the connection portion with the first bracket (141); Midmore (100) for work vehicles.

5. In Paragraph 4, The above support link (143) is, It further includes a second elastic member (143d-S) coupled by wrapping around at least a portion of the fastening member (143d) along the axial direction of the fastening member (143d), and The second elastic member (143d-S) provides elastic force in the direction in which the discharge cover (120) moves to change from the first position to the second position. Midmore (100) for work vehicles.

6. In Paragraph 3, The above second bracket (142) is, A pair of side panels (142b, 142c) protruding to a predetermined height; and At least a portion of the support link (143) is disposed between the pair of side panels (142b, 142c). Midmore (100) for work vehicles.

7. In Paragraph 6, The above second bracket (142) is, It further includes a lower panel (142a) having a predetermined area and coupled to the upper surface of the moor deck (110), and The pair of side panels (142b, 142c) are respectively disposed at both ends of the lower panel (142a) and are formed to extend perpendicularly to the lower panel (142a). Midmore (100) for work vehicles.

8. In Paragraph 6, Each of the above pair of side panels (142b, 142c) is, A first catch groove (142b-1HH, 142c-1HH) formed to a predetermined depth along a horizontal line parallel to the lower panel (142a) toward the arrangement direction of the discharge cover (120); A second locking groove (142b-2HH, 142c-2HH) spaced downward from the first locking groove (142b-1HH, 142c-1HH) and formed to a predetermined depth along a horizontal line parallel to the lower panel (142a) toward the arrangement direction of the discharge cover (120); and A connecting member (142b-CB, 142c-CB) connecting the first locking groove (142b-1HH, 142c-1HH) and the second locking groove (142b-2HH, 142c-2HH); comprising Midmore (100) for work vehicles.

9. In Paragraph 8, The above support link (143) is, A movable bar (143e) coupled to the second part (143c) and capable of engaging with the first locking groove (142b-1HH, 142c-1HH) or the second locking groove (142b-2HH, 142c-2HH); comprising When the moving bar (143e) is inserted into and caught in the first locking groove (142b-1HH, 142c-1HH), the discharge cover (120) is maintained in the first position, and When the moving bar (143e) is inserted into and caught in the second locking groove (142b-2HH, 142c-2HH), the discharge cover (120) is maintained in the second position, and The first position above is a state in which the discharge cover (120) is spread outward toward the moor deck (110), and The second position is a state in which the discharge cover (120) is folded and bent at a predetermined angle toward the inner direction of the moor deck (110) from the first position. Midmore (100) for work vehicles.

10. In Paragraph 8, The depth of the first locking groove (142b-1HH, 142c-1HH) is provided to be deeper than the depth of the second locking groove (142b-2HH, 142c-2HH). Midmore (100) for work vehicles.

11. In Paragraph 8, The inner end (EP-1) of the first locking groove (142b-1HH, 142c-1HH) and the inner end (EP-2) of the second locking groove (142b-2HH, 142c-2HH) are arranged offset from each other based on an imaginary vertical line (VL) perpendicular to the lower panel (142a). Midmore (100) for work vehicles.

12. In Paragraph 11, The protruding portion (142b-P, 143b-P) protruding outwardly above the first locking groove (142b-1HH, 142c-1HH) is provided to protrude more than a virtual extension line (EL) extending upward along the inclined surface of the connecting member (142b-CB, 142c-CB), and The above protrusions (142b-P, 142c-P) guide the movement of the moving bar (143e) between the first locking groove (142b-1HH, 142c-1HH) and the second locking groove (142b-2HH, 142c-2HH). Midmore (100) for work vehicles.

Images