JPH04122220U - Engine mounting structure in work vehicles - Google Patents

Abstract

(57) [Summary] [Purpose] To significantly reduce aircraft vibration by configuring an engine that is transmitted by a belt to a transmission so that it can be elastically supported. [Structure] The front side of the engine 15 is elastically supported by a support plate 11 fixed to the front part of the fuselage frame 2 via a vibration isolating rubber 16, while the rear side of the engine 15 is provided with an output pulley 27. Support the sides integrally.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is an engine for work vehicles such as riding rice transplanters and riding fertilizer spreaders. This concerns the mounting structure.

0002

[Prior art and problems to be solved by the invention]

Generally, some of these types of work vehicles have an engine and a truck attached to the fuselage frame. In addition to being equipped with a transmission engine, the power output from the engine is transmitted. Some are configured to have belt transmission to the shaft. By the way, work running It is desirable to reduce aircraft vibration as much as possible in a flying aircraft, so It is conceivable to support the engine elastically through vibration isolating rubber or the like. However, , when the engine is elastically supported in a belt-transmitted engine , the output pulley located on the side of the engine may swing violently with the engine. Therefore, it cannot be adopted due to the risk of interfering with power transmission. In the end, the reality was that the aircraft vibration could not be reduced.

0003

[Means to solve the problem]

In view of the above-mentioned circumstances, the present invention has been developed to provide a work-use product that can eliminate these drawbacks. Created for the purpose of providing a mounting structure for engines in moving vehicles. The engine and transmission are mounted on the fuselage frame, which is shaped like a frame. The power output from the engine is transmitted to the transmission by a belt. In a working vehicle, the output pulley that outputs the engine power is connected to the engine. The engine power is input from the output pulley via the transmission belt. The transmission is located in the middle of the fuselage frame, while the transmission is located in the front of the fuselage frame. An engine support plate is fixed to the end, and an engine is attached to the support plate. The front side of the engine base is elastically supported, and the rear side of the engine base is directly supported. It is characterized by the following. With this configuration, the present invention can significantly reduce aircraft vibration. This is how it was done.

0004

【Example】

Next, one embodiment of the present invention will be described based on the drawings. In the drawing, 1 is for passenger It is a traveling body of a type rice transplanter, and the body frame 2 of the traveling body 1 is a hollow square pipe. The approximate length in plan view is determined by the front and rear, left and right frames 2a, 2b, 2c, and 2d consisting of Although it is formed into a rectangular frame, there is a , a mounting frame 3 for the transmission case is constructed across the left and right direction, and the mounting frame 3 is A transmission case mounting bracket 4 is fixedly attached to the front middle part of the frame 3 in a hanging manner. It is set up. On the other hand, the rear ends of the left and right frames 2c and 2d and inside the rear frame 2b Rear axle case mounting brackets 5 and 6 are fixedly installed between them. and the bracket 6 fixed part of the rear frame 2b and the transmission case mounting bracket. A pair of left and right reinforcing frames 7 are installed in the front-rear direction between the bolt 4 and the bolt 4. Sara At the rear of the left and right frames 2c and 2d, there is a rear fan that extends rearward and upward. The mounting stays 8 are fixedly installed, and the lifting link mounting bracket is installed in the middle part. A mast support frame 10 to which the mast 9 is fixed is constructed, and furthermore, the left and right frames 2c , 2d is integrally molded with a bulging portion 2e that bulges upward in a curved manner. Ru. That is, a strength component in the height direction is added to the frame-shaped body frame 2. As a result, the longitudinal rigidity of the fuselage frame 2 is significantly increased.

[0005] 11 is an engine support plate fixed to the front end of the fuselage frame 2; The engine support plate 11 extends rearward from the middle part of the front frame 2a. However, the middle part of the engine support plate 11 is located near the front frame 2a. It is fixed to the auxiliary frame 12 which is arranged in parallel in contact with the auxiliary frame. It is supported by a support stay 13 that extends rearward from the middle part of 12. difference Furthermore, 14 is an engine base on which the engine 15 is mounted. The base 14 is arranged in an overlapping manner on the upper surface of the engine support plate 11. The front end is connected to the front end of the engine support plate 11 via a pair of left and right vibration isolating rubbers 16. While being supported, the rear end is erected so as to oppose the output direction of the transmission belt 29, which will be described later. It is integrally supported at the rear end portion of the engine support plate 11. In other words, the output The rear half side of the engine 15 where the power pulley 27 is arranged is attached to the engine support plate 11. While directly supporting the output pulley 27 to prevent it from swinging relative to the fuselage frame 2. , elastically supports the front half of the engine 15 to enable vibration transmission to the fuselage frame 2. In addition, the vibration path from the engine 15 to the middle part of the fuselage frame 2 is prevented. By interposing the front end portions of the front frame 2a and the left and right frames 2c and 2d, Therefore, the front ends of the front frame 2a and the left and right frames 2c and 2d are used as vibration absorbing parts. It is configured to significantly reduce vibrations on the intermediate part side of the fuselage frame 2. .

[0006] Reference numeral 17 denotes a transmission case assembled into the intermediate portion of the fuselage frame 2. , and the mating surface 17b is held on a line shifted to the right side from the center line C-C of the fuselage. In other words, it is configured to be divisible in the left and right direction. of the transmission case 17. The front end side of the left case is supported by the front frame 2a via the auxiliary stay S1, and the front end side of the left case is supported by the front frame 2a via the auxiliary stay S1. The front end side of the base is supported by a support plate 49, which will be described later, via an auxiliary stay S2. On the other hand, the rear end side is supported by the transmission case mounting bracket 4, but the left side On both right sides, there is a front actuator that pivotally supports the left and right front wheels 18 with an outer diameter of approximately 550 mmφ. The case 19 is assembled, and the left and right cases are attached to the frame 2c through the mounting plate. 2d, and stabilizes the transmission case 17 using the fuselage frame 2. At the center of the rear end surface, a rear wheel (described later) is supported via a drive shaft 20. An output shaft 22 that transmits power to the vehicle case 21, and first and second connection shafts 23. , 24, and a PTO shaft 26 that transmits power to a planting work section 25, which will be described later, is protruded. has been done. In other words, the transmission case 17 is located on the left side of the engine 15. Output pulley 27 arranged on the rear half side, on one side of transmission case 17 An input pulley 28 is provided, and a transmission belt 29 is wound between both pulleys 27 and 28. Engine power is input through a power transmission mechanism consisting of The power is output to the front wheels 18, the output shaft 22 and the PTO shaft 26. Ru. In addition, in this embodiment, the entire transmission case 17 is Perform maintenance inside the transmission case 17 without removing it from the system 2. Care has been taken to ensure that this is possible. That is, the transmission case 17 is Since it is configured so that it can be divided into First, remove the left front axle case 19, and then remove the transmission. If you remove the left side case of case 17, you can remove the entire transmission case 17. This makes it possible to perform internal maintenance without removing it.

[0007] Furthermore, 30 is a pitman arm, and the pitman arm 30 is a steering wheel. via the steering shaft 31a based on the steering operation of the steering wheel 31. The left and right front wheels 18 are configured to rotate and are connected via a link 32. The transmission case 1 is shaped like the bottom of a ship. It is arranged at the front end of the bottom surface of 7. That is, the bottom surface of the transmission case 17 A recess 17a is formed in the front end, and a pitman hole is inserted into the recess 17a. By accommodating the frame 30, the ground clearance on the front wheel side is secured as much as possible. The sea urchin is sleeping.

[0008] On the other hand, the left and right ends of the rear axle case 21 have an outer circumference of approximately 700 mmφ. The axles 33a of the left and right rear wheels 33 are respectively provided to protrude outward. The base portion 21a is bent at a substantially right angle when viewed from the front, and the drive shaft 2 The power input from the input shaft 34 from 0 to the side clutch mechanism 35 and the brake mechanism 3 6. It is configured to transmit power to the axle 33a via the final reduction mechanism 37 etc., but this The device is placed vertically so that the final case portion 21a faces substantially vertically when viewed from the side. It is arranged in a shape. In other words, the bottom surface of the rear axle case 21 and the axle 33a By increasing the vertical distance as much as possible, the outer circumferential diameter of the rear wheel 33 is made small. The design also ensures sufficient ground clearance for the rear wheels.

[0009] By the way, the rear axle case 21 is a front case forming the front half of the case. 38 and a rear case 39 forming the rear half of the case. However, both cases 38 and 39 are formed in the same shape. That is, a single The rear axle case is assembled by assembling both cases 38 and 39 molded in an inverted manner. A base 21 is formed. For this reason, the center of both cases 38 and 39 Through holes 38a and 39a are respectively formed in the portion for the input shaft 34 to pass through. However, in the through hole 38a of the front case 38, there is a bearing hole that supports the input shaft 34. While the rider 40 is assembled, the through hole 39a of the rear case 39 is equipped with a hydraulic pressure, which will be described later. It is covered by a cylinder bracket 42 for mounting the cylinder 41. It's summery. Further, 53 meshes with a drive bevel gear 54 fixed to the base end of the input shaft 34. The driven bevel gear 53 is rotatably supported on a bearing 55. However, the drive shafts 56, 5 of the left and right rear wheels 33 are inserted into the inner hole 53a bored in the shaft core. The base end portion of the bearing 55 is fitted into the inner part so as to be freely rotatable, and this structure allows the bearing 55 to be It is adapted to be used as a bearing member for the gear 53 and the left and right drive shafts 56 and 57. . Further, clutch pawls are formed on both left and right sides of the driven bevel gear 53, respectively. , a sleeve 58 spline-fitted to each clutch pawl to the left and right drive shafts 56, 57. Clutch pawls formed on the proximal surface engage with each other to form the side clutch mechanism 35. ing. In the side clutch mechanism 35, the ammunition 59 is constantly biased. Forcibly sliding the sleeve 58 outward based on the operation of the shifter 60 The clutch is disengaged depending on the situation, but at this time the sleeve 58 The shifter receiver 61, which is integrally fixed to the brake mechanism 36, presses the brake mechanism 36 to disengage the clutch. At the same time, the brake mechanism 36 is also adapted to perform a braking action.

0010 Furthermore, 43 is a lifting link whose base end is connected to the lifting link attachment mast 9. The elevating link mechanism 43 includes an upper link 44 and a lower link 4. 5, and between the cylinder bracket 42 and the upper link 44. The tip of the elevating link mechanism 43 is The hydraulic cylinder 41 raises and lowers the planting work unit 25 connected to the It is arranged in a forward-leaning position so that the direction of expansion and contraction is directed forward and upward. In other words, hydraulic The holder 41 extends along the inclination direction of the seedling platform 46 provided in the planting section 25 in a forward-inclined manner. At the same time, it is extended so as to push back the traction force of the planting work section 25 forward. By doing so, the traction load acting on the lifting link mounting mast 9 is reduced. I am considerate.

[0011] Furthermore, 47 is a battery for supplying current to various electrical components. When installing the battery 47 at the front of the fuselage, the installation space is limited to the engine 15 The recoil starter 48 is mounted on the right side of the recoil starter 48. . In other words, the rear of the engine 15 is placed above the front of the transmission case 17. Of the space formed below the engine 15 by the joint arrangement, the transmission belt The installation space on the left side of the engine 15 where the power transmission mechanism consisting of the engine 29 etc. is located. The battery 47 has been placed by effectively utilizing the dead space excluding the base. ing.

0012 By the way, in this embodiment, in order to form a space for installing the battery 47, the right frame is The front end of the arm 2d is formed into a concave shape, and this part has a guide hole 49a. A pair of front and rear support plates 49 are fixedly provided, and the above-mentioned The battery case 50 is attached to the left side of the machine via a fitting pin 50a that fits into the guide hole 49a. It is supported so that it can move freely in the right direction. That is, the guide hole 49a is for locking the base 50 in the battery installation space below the recoil starter 48. The mountain crossing portion 49b and the inclined portion 4 that guides the battery case 50 in a downward and outward direction. 9c, the battery 47 accommodated in the battery case 50 It is configured so that it can be easily attached and detached. Furthermore, 51 is attached to the battery case 50. The lever 51 is a U-shaped lever provided, and both ends of the lever 51 are It is slidably supported on both sides of the base 50 and can freely appear and retract outward. , when the battery case 50 is locked in the battery installation space, the lever is By recessing the lever 51, the middle part of the lever 51 comes into contact with the battery 47 and comes off. In addition to preventing the lever from falling, both left and right ends of the lever 51 are bored in the support plate 49. It fits into the locking hole 49d to prevent the battery case 50 from rattling. When removing the battery case 57, push out the lever 51 to remove the battery case 50. Drawer operations are now permitted. Furthermore, 52 is a rubber band. The rubber band 52 is elastically connected between the lever 51 and the fuselage frame 2. The battery 47 is held by being hooked to the lever 51, and the lever 51 is completely stopped. It is becoming more and more like this.

[0013] In the embodiment of the invention constructed as described, the engine 15 is connected to the fuselage frame. The engine support plate 11 is fixed to the front end of the engine 2. , while the rear side of the engine 15 where the output pulley 27 is disposed is directly supported, The front side of the engine 15 is elastically supported via vibration isolating rubber 16. subordinate Therefore, while controlling the swing of the output pulley 27 with respect to the fuselage frame 2, the engine 15 can be supported elastically, and as a result, there is no possibility of interfering with power transmission. Aircraft vibration can be significantly reduced.

[0014] Moreover, the engine 15 is arranged as close to the front of the fuselage frame 2 as possible. Therefore, the vibration transmission path from the engine 15 to the intermediate part of the fuselage frame 2 includes a front frame. The front ends of the frame 2a and the left and right frames 2c and 2d are interposed, and these front ends The front ends of the frame 2a and left and right frames 2c and 2d absorb engine vibrations. It will be configured as a dynamic absorption section. Therefore, the vibration of the engine 15 causes the 2. It is absorbed before being conducted to the intermediate part side, further reducing the aircraft vibration. can be done.

[0015] Further, the support plate 11 is fixed to extend rearward from the front frame 2a. Therefore, it may protrude to the front of the aircraft frame 2 and increase the overall length of the aircraft. There are no inconveniences.

[0016]

[effect]

In summary, since the present invention is constructed as described above, it is formed into a frame shape. The engine and transmission are mounted on the aircraft frame. It is configured to transmit the power output from the belt to the transmission. However, the rear side of the engine where the output pulley that outputs engine power is located is While directly supported by the support plate, the front side of the engine is supported elastically by the support plate. It will be supported by In other words, the engine can be operated while regulating the runout of the output pulley. Since it can be supported elastically, there is no problem in power transmission to the transmission. Machine vibration can be reduced without causing any discomfort, and as a result, work vehicle The work accuracy and livability of the machine can be significantly improved.

[Brief explanation of drawings]

FIG. 1 is a side view of a riding-type rice transplanter.

FIG. 2 is a plan view of the fuselage frame showing a state in which main parts are assembled.

FIG. 3 is a side view of the same as above.

FIG. 4 is a rear view of the same as above.

FIG. 5 is a view taken along arrow A-A of the same as above.

FIG. 6 is a plan view of the fuselage frame.

FIG. 7 is a side view of the same as above.

FIG. 8 is a front view of the same as above.

FIG. 9 is a rear view of the same as above.

FIG. 10 is a view taken along line B-B in the same manner as above.

FIG. 11 is a plan view of the engine mounting portion.

FIG. 12 is a side view of the same as above.

FIG. 13 is a developed view of the rear axle case.

FIG. 14 is a sectional view of the main part of the same as above.

[Explanation of symbols]

1 Traveling aircraft 2 Airframe frame 2a Front frame 11 Support plate 14 Engine base 15 Engine 16 Anti-vibration rubber 17 Transmission case

Claims (1)

[Scope of utility model registration request] 1. A working vehicle in which an engine and a transmission are mounted on a body frame formed in a frame shape, and power output from the engine is transmitted to the transmission by a belt, wherein the engine power is transmitted to the transmission by a belt. An output pulley for output is disposed at the rear side of the engine, and a transmission for inputting engine power from the output pulley via a transmission belt is disposed at an intermediate portion of the fuselage frame,
A work characterized in that an engine support plate is fixed to the front end of the fuselage frame, and the support plate elastically supports the front side of the engine base and directly supports the rear side of the engine base. Engine mounting structure in commercial vehicles.