JP2006232020A - Driving cabin structure for work vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To cover a warm water hose 10 disposed along a frame 11 of a driving cabin with a cover 13 securely supported to the frame 11. <P>SOLUTION: A locking type coupling means 20 is provided between a first end side in a cover cross-sectional direction of the cover 13 and the frame 11. In the locking type coupling means 20, a locking pin 21 extended out from the cover 13 enter an engaging portion 22 of the frame 11 to be locked, thereby coupling the first end side of the cover 13 to the frame 11. Superimposing coupling means 30 is provided between a second end side in the cover cross-sectional direction of the cover 13 and the frame 11. In the superimposing coupling means 30, a rivet 33 penetrates the frame 11 in a direction intersecting an engaging portion entering direction of the locking pin 21 in longitudinal direction view. An end portion of the cover 13 is superimposed and coupled with an outer peripheral surface 11a of the frame 11, thereby coupling the second end side of the cover 13 to the frame 11. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a driving cabin structure for a work vehicle having a driving cabin.

  Conventionally, as the work vehicle, for example, as shown in Patent Document 1, there is a tractor provided with a driving cabin C.

  In this type of work vehicle, an air conditioner for air conditioning in the cabin is installed on the ceiling of the driving cabin, and engine cooling water is driven so that engine cooling water whose temperature has increased for engine cooling is supplied to the air conditioner as a heat medium. A hot water hose that circulates between the engine and the air conditioner, and a refrigerant pipe that circulates the refrigerant between the prime mover and the air conditioner so that the refrigerant is supplied from the prime mover to the air conditioner. And a cover that covers the hot water hose and the refrigerant pipe may be provided so as to be supported by the cabin frame. Moreover, an electric wire may be provided in the operation cabin along the cabin frame, and a cover that covers the electric wire may be provided so as to be supported by the cabin frame.

The main frame 25 of the driving cabin C shown in Patent Document 1 is provided with a laterally outer surface t with which the sealing material 43 of the side door SD abuts (see FIG. 7), and a cover is applied to the laterally outer surface t. There are places in the cabin frame where the cover cannot be connected so that it is impossible to attach or attach connecting means such as rivets. For this reason, it is necessary to provide a connecting means for connecting the cover and the frame by operating the cover against the frame at one end side in the transverse direction of the cover. Thus, the mounting structure shown in FIG. 7 has been developed conventionally.
That is, a connecting means is provided between the one end side in the transverse direction of the cover 13 and the frame 11 so that the cylindrical insertion pin 40 connected to the cover 13 enters the pin hole 41 of the frame 11. A mounting structure in which a rivet 33 is provided between the other end side 13 and the frame 11 in the transverse direction has been developed.

JP 2001-206251 (paragraphs [0024], [0029], [0030], FIGS. 1 and 7)

  In the case of covering the hot water hose and the refrigerant pipe of the air conditioner described above, the cover may press the hot water hose and the refrigerant pipe, and a reaction force from the hot water hose and the refrigerant pipe may act on the cover. Further, in the case of covering the hot water hose and the electric wire, the hot water hose and the electric wire are bent at a corner portion in the operation cabin, and the hot water hose and the electric wire may press against the cover due to the bending. For this reason, in the above-described mounting structure developed in the past, the insertion pin may come off from the cabin frame and a gap may be generated between the cabin frame and the cover.

  An object of the present invention is to firmly support one end side of the cover in the transverse direction by an operation of applying the cover to the cabin frame so that the cover is not separated from the cabin frame. An object of the present invention is to provide a driving cabin structure for a work vehicle that can cover an object to be covered.

In the first invention, in the driving cabin structure of the work vehicle including the driving cabin,
Extending from one of the cover and the frame between the frame and the one end side in the cover crossing direction of the cover that covers the covering object existing along the surface located in the cabin of the frame of the operating cabin The locking pin is provided with an engaging portion provided on the other side, and the locking pin is engaged with the engaging portion to lock the one end side of the cover to the frame. Providing a connecting means,
Between the other end side of the cover in the cover crossing direction and the frame, the cover is provided with a connecting member that inserts the end of the cover and the frame, and the connecting tool enters the engaging portion of the locking pin. A superimposing connecting means for connecting the other end side of the cover to the frame by inserting the frame in a direction intersecting with the frame in the longitudinal direction of the frame and connecting the end portion of the cover overlapping the outer peripheral surface of the frame. It is.

  In other words, the locking type connecting means for connecting one end side of the cover in the transverse direction to the frame connects the cover to the frame when the locking pin enters and locks the engaging portion. The overlapping connecting means for connecting the other end side to the frame in the direction is inserted through the frame in a direction intersecting with the direction entering the engaging portion of the locking pin in the longitudinal direction of the frame, and the cover is overlapped with the frame and connected. Therefore, when the cover is applied to the frame, on one end side in the transverse direction of the cover, the locking pin enters and engages with the engaging portion and is connected to the frame. On the other end side in the transverse direction, the cover is superposed on the frame so that the connecting means can act.

  The locking connecting means enters the engaging portion and locks the locking pin to connect the cover to the frame, and the overlapping connecting means intersects the direction entering the engaging portion of the locking pin in the longitudinal direction of the frame. Since the cover is connected to the frame by inserting the frame in the direction, even if the cover abuts the covering object such as the hot water hose and the operation force to remove the cover from the cabin frame is generated, the cover transverse direction The cover does not come off the frame both at one end and at the other end.

  Therefore, according to the first aspect of the present invention, when the cover is applied to the frame, one end side in the transverse direction of the cover can be connected to the frame by the locking connection means, and the cover is supported by the frame. The cover can be supported by the frame while avoiding troubles such as door closing troubles and seal troubles, but the operating force in the direction to remove the cover by contacting the cover and the covering object etc. Even if this occurs, the cover is firmly supported by the locking connection means and the overlapping connection means so that the cover does not come off from the frame or does not float, and there is a gap between the cover and the frame. It is possible to cover the object to be covered in a highly accurate state that is less likely to cause troubles to enter.

  In the second invention, in the configuration of the first invention, after the locking pin enters the pin hole of the engaging portion, the cover is moved relative to the frame in the longitudinal direction of the frame. The locking pin is configured to be locked to the engaging portion.

  If the locking pin enters the pin hole of the engaging portion while being elastically deformed, and then is elastically restored and locked to the engaging portion, the locking pin is difficult to be removed from the engaging portion and the cover is removed. It becomes difficult to remove. On the other hand, after the locking pin enters the pin hole of the engaging portion, the locking pin is locked to the engaging portion by moving the cover relative to the frame in the longitudinal direction of the frame. Even if the pin hole of the engaging part is relatively large so that the engaging pin can be easily inserted into and removed from the engaging part, after the engaging pin enters the engaging part, it moves and engages with the pin hole. It can be surely locked to the part.

  Therefore, according to the second aspect of the present invention, the locking pin can be securely locked to the engaging portion and can be firmly supported so that the cover is not easily removed or lifted. When inspecting, etc., the cover can be easily and quickly detached by easily inserting and removing the locking pin with respect to the engaging portion by the large pin hole.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, a driving unit 4 having a pair of left and right steering operations and a front wheel 1 that can be driven, a pair of left and right driving rear wheels 2, and having an engine 3 positioned in the front part of the vehicle body, A lift arm 7 disposed on a side of the rear side of the rear part of the transmission case 6 so as to be swingable up and down, and a transmission case on a transmission case 6 constituting a rear part of a self-propelled vehicle body having a driving part having a driving cabin 5 A power take-out shaft 8 that protrudes rearward from the rear of the vehicle 6 is provided to constitute a tractor.

  This tractor connects a rotary tiller (not shown) to the rear part of the vehicle body so as to be lifted and lowered by the pair of left and right lift arms 7, and a driving force from the engine 3 from the power take-out shaft 8 to the rotary tiller. For example, a rotary cultivator is configured so as to transmit the power, and various working devices are connected to be freely moved up and down and driven to constitute various working machines.

An air conditioner 9 that cools and heats the interior of the operation cabin 5 is provided inside the ceiling of the operation cabin 5, and the air conditioner 9 and the cooling unit of the engine 3 located in the driving unit 4 are connected to the interior of the operation cabin 5. They are connected via a pair of hot water hoses 10 as shown in FIG.
That is, engine cooling water whose temperature has increased for cooling the engine 3 is taken into the air conditioner 9 from the prime mover 4 through one hot water hose 10 to generate heating air whose temperature has increased using the engine cooling water as a heat medium, The generated heating air is supplied from the air conditioner 9 to the inside of the operation cabin 5, and the engine cooling water whose temperature has decreased due to the generation of the heating air is supplied from the air conditioner 9 through the other hot water hose 10 to the driving unit 4. It comes to return to.

  As shown in FIGS. 2 and 3, the pair of hot water hoses 10, 10 positioned inside the driving cabin 5 is a pair of left and right vehicle bodies that are positioned at the front end of the driving cabin 5 in the frame of the driving cabin 5. The front vertical frame 11 is arranged so as to pass in the vertical direction of the vehicle body along a surface located in one of the driving cabins. The lower cover 12 that covers the pair of hot water hoses 10 below the bent portion located in the vertical direction of the vehicle body with respect to the bent portion located at the intermediate portion of the front vertical frame 11 in the vertical direction of the vehicle body, and the front vertical frame 11 An upper cover 13 that covers the pair of hot water hoses 10 on the upper side in the vertical direction of the vehicle body relative to the bent portion is provided in a state of being supported by the front vertical frame 11, and between the lower cover 12 and the upper cover 13. A resin cover 14 covering the gap is provided in a state of being supported by the lower cover 12 and the upper cover 13.

  As shown in FIGS. 4 and 5, the upper cover 13 is made of a sheet metal that is bent and formed so as to have a cross-sectional groove shape, and the groove becomes a space 15 that accommodates the pair of hot water hoses 10. It is. The upper cover 13 includes a locking connection means 20 having locking pins 21 provided on one end side in the transverse direction of the upper cover 13 at a plurality of locations in the longitudinal direction of the upper cover 13, and the upper cover 13. It is configured to be supported by the front vertical frame 11 of the operation cabin 5 by means of the overlapping connecting means 30 having a rivet hole 31 provided on the other end side in the transverse direction.

  As shown in FIGS. 5 and 6, the locking-type connecting means 20 at each of the plurality of locations of the upper cover 13 is welded to the end portion of the upper cover 13 by a pan head screw, so that the hose accommodating space is removed from the upper cover 13. The locking pin 21 provided on the upper cover 13 and the engaging portion 22 provided on the front vertical frame 11 are configured so as to extend in the direction in which 15 opens.

  The engaging portion 22 of the front vertical frame 11 is provided with a pin hole 23, and each locking connecting means 20 has the locking pin 21 inserted into the pin hole 23 of the engaging portion 22, and then the upper cover. 13 is moved relative to the front vertical frame 11 in the longitudinal direction of the front vertical frame 11 and downward in the vertical direction of the vehicle body. The head portion 21a is locked inside the engaging portion 22, and one end side of the upper cover 13 is connected to the front vertical frame 11 so as not to be disengaged from the vehicle body rear side.

  As shown in FIGS. 5 and 6, the overlapping connection means 30 at each of the plurality of locations of the upper cover 13 includes the rivet hole 31 provided at the end of the upper cover 13, the rivet hole 32 provided in the front vertical frame 11, The rivet 33 is provided with the rivet hole 31 of the upper cover 13 and the rivet hole 32 of the front vertical frame 11, and the rivet 33 is engaged with the locking pin 21 of each locking type connecting means 20. The front vertical frame 11 is inserted in a direction that intersects with the pin hole 23 of the portion 22 when viewed in the longitudinal direction of the front vertical frame, and the end of the upper cover 13 is connected to the outer peripheral surface 11 a of the front vertical frame 11 by the rivets 33. It is designed to be overlapped and connected.

That is, when covering the pair of hot water hoses 10 with the upper cover 13 above the bent portion of the front vertical frame 11, the locking pins 21 of the locking connection means 20 are inserted into the pin holes 23 of the engaging portions 22. After the insertion, the upper cover 13 is moved downward with respect to the front vertical frame 11 in the vertical direction of the vehicle body until the locking pin 21 comes into contact with the front vertical frame 11 in the pin hole 23, and the upper cover is moved. 13 is in a predetermined application state with respect to the front vertical frame 11. That is, the end portion 13 a provided with the locking pin 21 of the upper cover 13 contacts the side surface 11 b provided with the engaging portion 22 of the front vertical frame 11, and the end portion 13 b provided with the rivet hole 31 of the upper cover 13 is formed. The front vertical frame 11 is overlapped with the side surface 11a provided with the rivet holes 32, and the rivet holes 31 of the upper cover 13 and the rivet holes 32 of the front vertical frame 11 are matched. Then, in each overlapping connecting means 30 of the upper cover 13, rivets 33 are mounted in the rivet holes 31 of the upper cover 13 and the rivet holes 32 of the front vertical frame 11.
Then, the locking pin 21 in each locking connection means 20 enters the pin hole 23 of the engaging portion 22 and is locked inside the engaging portion 22 by the head 21 a of the locking pin 21. The locking type connecting means 20 is in a connected state, and the upper cover 13 is connected to the side surfaces 11a and 11b of the front vertical frame 11 by each locking type connecting means 20 and each overlapping connecting means 30. It is not supported by the side surface 11c with which the side door 5a abuts or the side surface 11d with which the windshield 5b abuts, but is supported by the side surfaces 11a and 11b. Moreover, even if the upper cover 13 and the hot water hose 10 come into contact with each other and an operation force is generated in a direction to remove the upper cover 13 from the front vertical frame 11, the locking of the locking pin 21 to the engaging portion 22 and the rivet 33 are performed. Due to the connection, the upper cover 13 is firmly supported so as not to come off or float from the front vertical frame 11, a gap is formed between the upper cover 13 and the front vertical frame 11, and dust enters the cover. The hot water hose 10 can be covered in a state in which the trouble of dripping is unlikely to occur.

[Another Example]
In addition to providing a cover so as to cover the hot water hose 10 as in the above embodiment, the present invention also applies to a refrigerant pipe that supplies a refrigerant to the air conditioner 9, a drain hose of the air conditioner 9, or a cover that covers the electric wire. Can be applied. Therefore, the hot water hose 10, the refrigerant pipe, the drain hose, the electric wire, and the like are collectively referred to as the covering object 10.

  In order to configure the locking type connecting means 20, instead of configuring the locking pin 21 on the cover 13 and the engaging portion 22 on the frame 11 as shown in the above embodiment, The pin 21 may be provided toward the frame 11 and the engaging portion 22 may be provided toward the cover 13. In any case, the object of the present invention can be achieved.

  As the locking pin 21, a locking pin integrally formed with the cover 13 may be adopted instead of the locking pin formed by a screw connected to the cover 13 as in the above embodiment.

  In addition to employing the rivet 33 as shown in the above embodiment to constitute the superposition connecting means 30, it is also possible to adopt a fastening screw that is configured to be inserted into the cover 11 through the cover 13 and The object of the invention can be achieved, and the rivet 33, the fastening screw, and the like are collectively referred to as a connector 33.

  In addition to the present invention and tractor, the present invention can also be applied to driving cabins installed in various work vehicles such as a combine, and the tractor, combine and the like are collectively referred to as a work vehicle.

Side view of the entire tractor Cross section of driving cabin ceiling Side view of the hot water hose area of the operating cabin (B) is a side view of the upper cover, and (b) is a front view of the upper cover. Cross section of top cover mounting structure Sectional drawing in the arrangement | positioning part of the latching type connection means of an upper cover and a cabin front vertical frame Cross-sectional view of conventional upper cover mounting structure

Explanation of symbols

5 Driving cabin 11 Frame 11a Frame peripheral surface 20 Locking connecting means 21 Locking pin 22 Engaging portion 23 Pin hole 30 Superposition connecting means 33 Connecting tool

Claims (2)

A driving cabin structure for a work vehicle having a driving cabin,
Extending from one of the cover and the frame between the frame and the one end side in the cover crossing direction of the cover that covers the covering object existing along the surface located in the cabin of the frame of the operating cabin The locking pin is provided with an engaging portion provided on the other side, and the locking pin is engaged with the engaging portion to lock the one end side of the cover to the frame. Providing a connecting means,
Between the other end side of the cover in the cover crossing direction and the frame, the cover is provided with a connecting member that inserts the end of the cover and the frame, and the connecting tool enters the engaging portion of the locking pin. A superimposing connecting means for connecting the other end side of the cover to the frame by inserting the frame in a direction intersecting with the frame in the longitudinal direction of the frame and connecting the end portion of the cover overlapping the outer peripheral surface of the frame. The driving cabin structure of a working vehicle.   After the locking pin enters the pin hole of the engaging portion, the cover is moved relative to the frame in the longitudinal direction of the frame so that the locking pin is locked to the engaging portion. The working cabin structure for a work vehicle according to claim 1.

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