JP2019065803A - Work vehicle - Google Patents

Abstract

To provide a work vehicle in which an oil cooler and a condenser can be disposed in an integral and compact manner in the work vehicle in which auxiliary machines such as an intercooler, the oil cooler and the condenser are disposed at a front face side of a radiator.SOLUTION: A work vehicle comprises: a radiator 12 which is disposed at a front side of an engine 7; an intercooler 13 which is disposed at a front face side and an upper side of the radiator 12; an oil cooler 18 which is disposed at the front face side of the radiator 12 and a right lower side of the intercooler 13; a condenser 21 which is disposed at a front side of the oil cooler 18; and a support member 17 which is supported at the side of a chassis 4 in a removable or movable manner. The oil cooler 18 and the condenser 21 are fitted to the support member 17 in such a manner that both the oil cooler and the condenser are unitized.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a work vehicle having an oil cooler and a condenser supported in front of a radiator.

  A radiator is provided in front of the engine, and an intercooler, an oil cooler, and a condenser are disposed in front of the radiator, and the oil cooler and the condenser are disposed in line with the front of the radiator. A work vehicle shown in Patent Document 1 swingably supported so as to be switched to an open state where maintenance work is performed by opening the front of the vehicle is conventionally known.

Patent No. 3837097

  In the above document, the maintenance of the accessories is facilitated by supporting the accessories such as the oil cooler and the condenser disposed in front of the radiator so that the accessories can be pivoted forward. Since the oil cooler and the condenser are separately rotatably supported, the number of parts is increased, the cost is increased, and the installation space is also increased.

  The present invention is a work vehicle in which an intercooler, an oil cooler, and auxiliary equipment such as a condenser are disposed on the front side of a radiator, and the work vehicle can arrange the oil cooler and the condenser integrally and compactly. It is an issue to provide.

  In order to solve the above problems, first, a radiator 12 disposed on the front side of the engine 7, an intercooler 13 disposed on the front side and upper side of the radiator 12, and the front side of the radiator 12 and the above It comprises an oil cooler 18 disposed immediately below the intercooler 13, a condenser 21 disposed in front of the oil cooler 18, and a support member 17 supported detachably or movably on the chassis 4 side. It is characterized in that both the oil cooler 18 and the condenser 21 are attached to the support member 17 so as to be unitized.

  Secondly, the support member 17 is characterized in that it can be pivoted back and forth with a pivot shaft 16 provided on the lower side of the support member 17 as a fulcrum.

  Thirdly, fixing mechanisms 33, 34 for fixing the support member 17 at a predetermined closed position after being rotated backward are provided on the upper side of the pivot shaft 16, and the side of the support member 17 is provided with fixing mechanisms 33, 34. The present invention is characterized in that the control mechanisms 31 and 32 for restricting forward rotation of the support member 17 at a predetermined open position are provided.

  Fourth, the net member 23 disposed on the front side of the radiator 12 is characterized in that it can be attached and fixed in a state where it is divided left and right.

  According to the support member, since the oil cooler can be disposed immediately below the intercooler and the condenser can be disposed in front of the oil cooler, the oil cooler can be integrally supported on the front side of the radiator. Auxiliary equipment such as a cooler and a condenser can be collectively arranged in a compact manner.

  Further, according to the support member configured to be rotatable forward and backward with a pivot shaft provided on the lower side of the support member as a fulcrum, removal and maintenance of the oil cooler and the capacitor attached to the support member, and maintenance Work can be done more easily.

  Further, a fixing portion for fixing the support member at a predetermined closed position to the rear is provided on the upper side of the rotation shaft, and the front rotation of the support member is specified on the side of the support member. According to the device provided with the restricting portion for restricting at the open position, the opening and closing of the support member on which the oil cooler and the capacitor are integrally mounted can be smoothly performed, which makes the maintenance work easier.

  In addition, according to what the net member arranged on the front side of the radiator is configured to be able to be attached and fixed in the left and right divided state, the space for inserting and removing the net member from the front side of the radiator is more compact Can be configured.

FIG. 1 is an overall side view of a work vehicle to which the present invention is applied. It is a front perspective view showing composition in an engine room. It is the principal part perspective view which showed the support unit. (A) and (B) are the principal part perspective views which showed the switching state of the support unit. (A) And (B) is the principal part side view which showed the switching state of the support unit. It is the principal part side view which showed the control mechanism of a support unit. It is the principal part perspective view which showed the control mechanism of a support unit. (A) and (B) are the exploded perspective views which showed the structure of the support unit.

  Hereinafter, embodiments of the present invention will be described based on illustrated examples. FIG. 1 is an overall side view of a work vehicle to which the present invention is applied. The present tractor comprises a traveling machine body 2 having crawler type traveling devices 1 and 1 and a working machine (not shown) such as a rotary tillage machine connected to the rear of the traveling machine body 2 via an elevator link 3 so as to be able to move up and down. Configured

  A cabin 6 provided with a control unit on which an operator gets in is disposed in a rear half of the chassis frame 4 of the traveling body 2 and a bonnet for covering the side from above the engine 7 on the front side of the cabin 6 An engine room covered by 8 is formed.

  Further, the bonnet 8 is configured to be vertically pivotable with the rear end side as a pivot, thereby opening the upper part of the engine room and performing maintenance work inside the engine room. A front grille 10 is provided on the front side of the bonnet 8 so that air can be sent from the front side of the traveling body 2 into the engine room during traveling by the grille vents formed in the front grille 10. Is configured.

  Next, the configuration in the engine room will be described based on FIGS. 2 to 8. FIG. 2 is a front perspective view showing the configuration in the engine room, FIG. 3 is a perspective view of the main part showing the support unit, and FIGS. 4 (A) and 4 (B) are the open and closed states of the support unit. 5 (A) and 5 (B) are main part side views showing the open / close state of the support unit, and FIG. 6 is a main part showing the restriction mechanism of the support unit. FIG. 7 is a side view, FIG. 7 is a perspective view of an essential part showing a regulation mechanism of a support unit, and FIGS. 8 (A) and 8 (B) are exploded perspective views showing a configuration of the support unit.

  The engine 7 is firmly fixed to the rear portion of the engine room in a state of being mounted on the chassis frame 4 (see FIG. 2 and the like).

  In a front portion of the engine room, a radiator 12 as a cooling device for the engine 7, an intercooler 13 disposed on the front upper side of the radiator 12, and an air cleaner 14 supported in front of the intercooler 13. A support unit 17 supported so as to be swingable back and forth around a swinging shaft 16 provided on the front lower side of the radiator 12 is supported. The support unit 17 is integrally formed by integrating a hydraulic oil cooler (oil cooler) 18, an HST oil cooler (oil cooler) 19, a condenser 21, a fuel cooler 22, and a net member 23. (See Figure 8 etc.)

  The net member 23 is formed to be wide in the left-right direction, and is formed to cover the entire front of the capacitor 21. The net member 23 is formed to be narrow in the left-right direction. The entire front of the HST oil cooler 19 is formed. Is divided into a left side net portion 23B formed to cover the lower side and a lower side net member 23C formed wide in the lateral direction so as to cover the entire front of the fuel cooler 22 and supported separately. It is comprised so that attachment or detachment is possible from the unit 17 side (refer FIG.2 and FIG.3).

  The lower end side of the radiator 12 is fixed to the chassis frame 4 side, and is fixed to the rear surface side of a plate-like support 24 raised upward. The intercooler 13 is attached and fixed to the front upper side of the support 24 and vertically extended from the left and right sides of the front intercooler 13 to the front lower end of the support 24. A support plate 27 is provided, and the support unit 17 is mounted on and supported by the swing shaft 16 provided on the lower end side of the support plate 27 so as to be able to swing back and forth. Details of the support unit will be described later.

  The air cleaner 14 is supported on the side of the support 24 via an attachment frame 26 extending forward from the left and right ends of the upper portion of the support 24 and bent entirely in a U-shape, It is disposed on the front side of the intercooler 13.

  Also, the air cleaner 14 is an oval (small) one that is long in the vertical direction in a side view, and is supported so as to be substantially parallel to the net member 23, thereby providing an installation space in the front-rear direction. Is configured to be more compact. More specifically, the air cleaner 14 is supported in a state where the lower side is slightly inclined to the front, and a slight space is secured on the upper front side of the net member 23 in a side view, so that the net member 23 is It is comprised so that it may become easy to confirm visually whether it is set reliably (refer FIG. 5 (B)).

  Further, since the mounting frame 26 is formed in such a shape as to pass the front lower side from the left and right sides of the air cleaner 14 and to hold the air cleaner 14, the mounting frame 26 is in the engine room of the operator. It can also be used as a handle used when getting on the chassis frame 4 side to perform the maintenance work of the above.

  The support unit 17 is disposed directly below the intercooler 13 and is detachably attached to a first support member 17A on which the hydraulic oil cooler 18 is attached and supported, and a lower front side of the first support member 17A. A pair of second support members 17B for supporting the left and right ends of the fuel cooler 22, a third support member 17C mounted so as to connect the second support members 17B provided on the left and right, and a fourth support member 17D. The hydraulic oil cooler 18, the fuel cooler 22, the HST oil cooler 19, the condenser 21 and the net member 23 are integrally attached to and supported by the respective support members 17 as a unit. ing.

  The first support member 17A is bent in a U-shape in plan view so as to accommodate and attach the hydraulic oil cooler 18, and the lower end sides of both ends thereof are the lower end sides of the support plate 27 via the swing shaft 16. It is rotatably mounted on the front and rear. As a result, the first support member 17A can support the hydraulic oil cooler 18 directly below the intercooler 13, and at the same time, the support position (closed state) in which the support unit 17 is swung backward, and the front It can be rocked back and forth (switched) to the rocked open position (open state).

  Further, on the left and right outer sides of the first support member 17A and on the left and right inner sides of the support plate 27, there are provided regulating mechanisms for regulating the forward swing of the support unit 17 at the open position. Specifically, the restricting mechanism is configured to contact the restricting piece 31 with the restricting piece 31 protruding outward from the middle in the vertical direction of the left and right outer surfaces of the first support member 17A and the support plate. It is comprised from the control part 32 bent and formed in the left and right inside from the left and right outside of 27 (refer FIG.6 and FIG.7).

  Furthermore, on the left and right outer surface upper end sides of the first support member 17A and on the upper end side of the support plate 27, there is provided a fixing mechanism for holding the support unit 17 at the support position pivoted backward until it stands substantially upright. There is. Specifically, the fixing mechanism is provided on the left and right outer surfaces of the first support member 17A and is engaged with the fixing pin 33. It is comprised from the mating engaging part 34 (refer FIG.4 and FIG.6).

  The second support member 17B is a bracket detachably attached to the lower side of the left and right outer surfaces of the first support member 17A, and the left and right ends of the fuel cooler 22 are provided by the second support members 17B and 17B provided in pairs. The fuel cooler 22 is configured to be supported on the front lower side of the hydraulic oil cooler 18 by mounting and supporting it on the first support member 17A side.

  The third support member 17C is a plate-like member attached to and fixed to the upper side of the second support member 17B and extended in the left-right direction so as to bridge the left and right second support members 17B and 17B. In the upper surface side, a vertical rail member for detachably supporting the net member 23 is provided.

  The rail members are raised upward from the upper surface of the third support member, and the left and right ends of the right net member 23A are inserted into the pair of right net support rails 38, 38 similarly to the left and right net members 23B. A pair of left net support rails 39 into which both sides are inserted are formed (see FIG. 3).

  The right net support rail 38 is obliquely provided with a connecting rod 41 for connecting and reinforcing the pair of right net support rails 38, and the capacitor 21 is attached to the back side of the right net support rail 38. It is configured to be supported. Further, the left net support rail 39 is configured such that the HST oil cooler 19 is attached and supported on the back side (see FIG. 4 (B)).

  The right net support rail 38 is formed such that the upper end side thereof is shorter than the upper end of the intercooler 13, and in particular, the right net support rail 38A on the left and right inside is formed shorter than the right net support rail 38B on the left and right It is done. Similarly, the left net support rail 39 is formed such that the upper end side thereof is shorter than the upper end of the intercooler 13, and in particular, the left net support rail 39A on the left and right inside is shorter than the left net support rail 39B on the left and right outside (See FIGS. 3 and 4).

  With this configuration, the right side net member 23A and the left side net member 23B are supported in a state in which the left and right end sides thereof are fitted in the respective net support rails 38 and 39, and the upper end side extends rearward. Since the upper end side of the intercooler 13 is locked by the locking piece 42 provided, the left and right net members 23A and 23B can be supported without rattling even by vibration.

  Further, the right net support rail 38 for positioning the respective net members 23A and 23B divided into left and right and the left net support rail 39 are formed by shortening the left and right inner support rails 38A and 39A. Of the left and right net members 23A and 23B can be inserted into the respective net support rails 38 and 39 while obliquely inclining the net members 23A and 23B from the upper center side. It will be easier. Furthermore, even if the upper center side of the rail member 36 is not largely opened, the attachment and detachment (maintenance) of the left and right net members 23A and 23B can be smoothly performed.

  The fourth support member 17D is a plate-like member attached and fixed to the lower side of the second support member and extended in the left-right direction so as to bridge the left and right second support members 17B and 17B. A recessed portion is formed in which the lower end side of the lower net member 23C is fitted.

  As a result, the lower net member 23C is hung by being hooked on the upper surface side of the third support member 17C by the hook-shaped locking portions 43 which are projected upward to the left and right both end sides. While being attached, the lower end side of the lower net member 23C is inserted into the fourth support member 17D, so that the lower net member 23C is fixedly attached to the front side of the fuel cooler 22 without rattling. (See FIG. 8).

  That is, since the lower net member 23C can be attached so as to be hooked on the front side of the fuel cooler 22, when the lower net member 23C is attached and detached, the lower net member 23C is located above the support unit or Since it is not necessary to slide from the side, the fuel cooler 22 around the support unit 17 can be configured with more space efficiency.

  According to the support unit 17 configured as described above, the hydraulic oil cooler 18 is disposed immediately below the intercooler 13 so as to overlap the intercooler 13 in plan view, and is disposed on the lower front side of the hydraulic oil cooler 18 Since the HST oil cooler 19 and the condenser 21 and the net members 23 covering these front sides can be integrally disposed on the upper surface side of the fuel cooler 22, the oil coolers 18 and 19, and The condenser 21, the fuel cooler 22 and the net member 23 can be compactly disposed on the front side of the radiator 12.

  Further, the supporting unit 17 is integrally mounted and supported with accessories including the oil coolers 18 and 19, the condenser 21, the fuel cooler 22, and the net member 23, and the swinging shaft 16 is By arranging on the front lower end side of the radiator 12, the support unit 17 is configured to be smoothly rocked forward to the open position by its own weight (see FIG. 6). As a result, the support unit 17 can further improve the maintainability of the accessories, and can reliably prevent the support unit 17 from being fixed at the support position after the maintenance of the support unit 17.

  Further, since the support unit 17 which is pivoted forward by its own weight can be automatically stopped at the open position by the restricting piece 31 and the restricting portion 32 (restriction mechanism), the support unit 17 opens too much forward. The situation can be reliably prevented. In addition, since the supporting unit 17 can integrally open and close the whole of the accessories to the open position (open state) and the support position (closed state) by the single swinging shaft 16. Also, the number of parts can be reduced and the cost can be reduced.

  Incidentally, the oil coolers 18, 19 attached to the support unit 17, the condenser 21, the fuel cooler 22, and the net member 23 correspond to the support members 17A, 17B, 17C, which constitute the support unit 17. Since it can be attached and detached separately from 17D, maintenance of a part of accessories can also be performed easily.

7 Engine 4 Chassis frame (chassis)
12 Radiator 13 Intercooler 16 Swing shaft (Pivot shaft)
17 Support unit (support member)
18 Hydraulic oil cooler (oil cooler)
19 HST oil cooler (oil cooler)
21 capacitor 23 net member 31 regulating piece (regulating mechanism)
32 Regulation department (regulation mechanism)
33 Fixing pin (Fixing mechanism)
34 Engaging part (Fixing mechanism)

Claims (4)

A radiator (12) disposed in front of the engine (7);
An intercooler (13) disposed on the front side and the upper side of the radiator (12);
An oil cooler (18) disposed on the front side of the radiator (12) and directly below the intercooler (13);
A condenser (21) disposed in front of the oil cooler (18);
And a support member (17) removably or movably supported on the chassis (4) side,
The working vehicle which attached both to the said supporting member (17) so that the said oil cooler (18) and the said capacitor | condenser (21) may be unitized. The work vehicle according to claim 1, wherein the support member (17) is configured to be rotatable forward and backward with a pivot shaft (16) provided on a lower side of the support member (17) as a fulcrum. A fixing mechanism (33, 34) for fixing the support member (17) in a predetermined closed position rotated backward is provided on the upper side of the rotation shaft (16),
The work vehicle according to claim 2, wherein a control mechanism (31, 32) for restricting forward rotation of the support member (17) at a predetermined open position is provided on the side of the support member (17). The work vehicle according to any one of claims 1 to 3, wherein a net member (23) disposed on the front side of the radiator (12) is configured to be attachable and fixable in a left and right split state.

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