JP2008075702A - Belt retainer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow easy work for replacing a belt. <P>SOLUTION: The belt retainer 70 is arranged outside the outer periphery of one or both of pulleys 61, 62 of a belt type power transmission mechanism which has the belt 63 wound between the driving pulley 61 and the driven pulley 62, for preventing the removal of the belt 63 from the pulleys 61, 62. The belt retainer 70 is formed in a side-view approximate S-shape and in a rear-view approximate V-shape by bending a rod material. It is arranged with its rear-view opening side directed to the side of the other pulley 62. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is a belt-type power transmission mechanism configured by winding a belt between a driving pulley and a driven pulley, and arranged on the outer periphery of one or both pulleys to prevent the belt from coming off from the pulley. Related to the belt presser.

Conventionally, a belt-type power transmission mechanism constructed by winding a belt between a driving pulley and a driven pulley, and arranged on the outer periphery of one or both pulleys to prevent the belt from coming off from the pulley As the presser, the belt presser is configured to cover the pulley along the outer peripheral part of the pulley with a belt width, or a substantially U-shaped belt presser when viewed from the back, and the two presser bodies are opposed to each other with the pulley interposed therebetween. A belt presser (see, for example, Patent Document 1) that is arranged in the above-described configuration and can be changed in position in the perspective direction with respect to the pulley outer periphery by a linkage mechanism is known.
JP 2003-240077 A

  In a conventional belt presser having a substantially U-shape when viewed from the rear, the belt-type power transmission mechanism is disposed in a narrow space such as an agricultural machine and it is difficult for the operator to reach the belt presser. When performing maintenance such as replacement work, it is difficult to wind the replacement belt around the pulley if the belt presser is attached to the mounting member and placed outside the outer periphery of the pulley. It was necessary to secure a space for removing the belt presser by removing the belt presser, and then to remove the belt presser once. Further, in the belt presser as shown in Patent Document 1, the belt can be wound around the pulley without removing the belt presser, but the belt attaching operation becomes complicated, and the number of parts increases and the cost is increased. There was a problem of becoming higher.

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

  That is, in claim 1, a belt-type power transmission mechanism configured by winding a belt between a driving pulley and a driven pulley, and disposed on the outer periphery of one or both pulleys, the belt from each pulley. In the belt presser for preventing it from coming off, the belt presser is formed in a substantially S-shape in side view by bending a bar, and in a substantially V-shape in rear view, and the open side in the rear view is the other pulley. It is arranged to face the side.

  According to a second aspect of the present invention, a belt-type power transmission mechanism configured by winding a belt between a driving pulley and a driven pulley, and disposed on the outer periphery of one or both pulleys, the belt is detached from each pulley. In the belt presser that prevents the belt presser, the belt presser is a shaft disposed outside the outer peripheral portion of each pulley by the thickness of the belt and spaced apart from each other at substantially equal intervals and in parallel with the axis of the rotation shaft of the pulley. At least three upper, middle, and lower presser portions, and the upper presser portion and the intermediate presser portion are connected to one side of the pulley by the upper connecting portion, and the intermediate presser portion and the lower presser portion are connected to the other of the pulley. A lower guide portion that is connected laterally, connects an upper guide portion that extends downward to the side opposite to the upper connection portion of the upper presser portion, and extends upward to a side opposite to the lower connection portion of the lower presser portion. Are connected.

  In Claim 3, among the distance between the pulley side surface and the upper guide part and the distance between the pulley side surface and the lower guide part, one distance is wider than the width of the belt, and the other distance is larger than the width of the belt. It is configured narrowly.

  As effects of the present invention, the following effects can be obtained.

  In claim 1, the belt presser can be taken in and out of each pulley without removing the belt presser between the belt presser and the pulley and removing the belt presser from the outer periphery of the pulley. The belt replacement work can be facilitated, and the workability during maintenance can be improved. In addition, the belt presser can be easily configured with a single bar, and the belt presser can be easily attached or manufactured at a low cost by reducing the number of parts.

  According to a second aspect of the present invention, the belt presser is wound around each pulley without removing the belt presser from the outer periphery of the pulley, and the belt presser is removed from each pulley. This makes it possible to facilitate belt replacement work and improve workability during maintenance. In addition, it is possible to guide the belt with the guide part so that the belt does not wind around the upper or lower presser part when it is inserted between the upper and middle presser parts of the belt presser and the pulley. The pulley can be accurately wound.

  According to the third aspect of the present invention, the belt can be easily wound around the pulley or removed from the pulley from the wider interval. If the belt is wider, if the belt is accidentally wound from the guide part to the outside of the presser part on the same upper and lower sides, there will be no margin in the length of the belt. Since it cannot be moved, it is possible to prevent the mistake of winding the belt around the belt presser instead of the drive pulley.

  Next, embodiments of the invention will be described.

  1 is a side view showing the overall configuration of the combine, FIG. 2 is a plan view showing the overall configuration of the combine, FIG. 3 is a diagram showing the configuration of the power transmission mechanism of the combine, and FIG. 4 is a rear view of the belt-type power transmission mechanism. 5 is a plan view of the belt type power transmission mechanism, FIG. 6 is a rear view of the belt presser, FIG. 7 is a side view of the belt presser, and FIG. 8 is a side view of another belt presser.

  First, the whole structure of the combine which is an agricultural working machine to which the belt type power transmission mechanism provided with the belt presser of the present invention is applied will be described.

  As shown in FIGS. 1 and 2, the combine 1 supports the machine frame 2 with a crawler type traveling device 3 and drives the crawler type traveling device 3 with an engine 21 mounted on the body frame 2 to move forward or It is configured to be able to travel backward. And in the combine 1, the cutting part 4 which cuts a grain cocoon in the front part of the body frame 2, and conveys it to a machine body back is provided, and the harvested grain mash from the cutting part 4 is threshed in the left front, back, and middle part of the body frame 2. A threshing unit 5 and a sorting unit 6 for sorting the grains threshed by the threshing unit 5 are arranged up and down. At the rear part of the machine body frame 2, a slaughter processing unit 7 is provided that discharges cereals threshed by the threshing unit 5 to the outside as waste.

  A grain tank 8 is provided at the right rear part of the machine body frame 2 to store grains conveyed from the sorting unit 6 by the milling cylinder, and the grains in the grain tank 8 are arranged from the rear to the upper side of the grain tank 8. A discharge auger 9 for discharging to the outside of the machine body is provided. The glen tank 8 is configured so that the front portion of the discharge auger 9 can be pivoted open to the side of the machine body with the vertical auger 9a as the center. In front of the Glen tank 8 and in the front right side of the fuselage frame 2, an operating device 15 including an operating device such as a steering handle 11 and various operating levers, a driver's seat 12, etc. is provided in the cabin 13. A transmission 19 and an engine 21 are disposed below the operation unit 15.

  Next, the configuration of the power transmission mechanism of the combine 1 will be described.

  As shown in FIG. 3, in the power transmission mechanism of the combine, the transmission 19 and the engine 21 are arranged in the front-rear direction on the front part of the body frame 2, and the drive pulley is provided on the output shaft of the engine 21. 25 and a driven pulley 26 provided on the input shaft of the transmission 19 are connected by a belt 27. Power is transmitted from the engine 21 to the transmission 19 by the pulleys 25 and 26 and the belt 27, so that the crawler traveling device 3 connected to the transmission 19 can be driven.

  A pulley 31 is provided on a cutting drive shaft protruding from the transmission 19 via a one-way clutch 29, and the pulley 31 and a cutting pulley 32 provided on a cutting input shaft are connected by a belt 33, and the fuselage Only when traveling forward, the power from the engine 21 can be transmitted from the pulleys 31 and 32 and the belt 33 to each device such as a pulling device, a cutting device, and a conveying device provided in the cutting unit 4. Each device of the cutting unit 4 is driven or stopped by an on / off operation of the cutting clutch 34, and is configured to synchronize the driving speed with the vehicle speed during driving.

  Further, drive pulleys 35 and 41 are provided on the output shaft of the engine 21, and a grain discharging device 38 such as a discharge conveyor provided in the Glen tank 8 from one driving pulley 35 via the power transmission mechanism 36, The power from the engine 21 can be transmitted to the discharge auger 9 linked to the grain discharge device 38. The grain discharging device 38 and the discharging auger 9 are configured to be driven or stopped by an on / off operation of a discharging clutch 39 provided in the power transmission mechanism 36.

  The other driving pulley 41 and the driven pulley 42 on the threshing input shaft are connected by a belt 43, and the threshing unit 5, the sorting unit 6, and the cutting unit 4 are connected to the pulleys 41 and 42 and the belt 43 through a power transmission mechanism 44. Power can be transmitted to each device. For example, a threshing pulley 45 of the power transmission mechanism 44 and a pulley 46 of a handling cylinder 48 provided in the threshing unit 5 are connected by a belt 47, and the handling cylinder 48 is connected to the handling cylinder 48 from the engine 21 by these pulleys 45 and 46 and the belt 47. Power can be transmitted.

  Further, the power from the engine 21 can be transmitted from the sorting pulley 51 of the power transmission mechanism 44 to the transport conveyor such as the red pepper or the first conveyor provided in the sorting unit 6 via the power transmission mechanism 52. . The handling drum 48 of the threshing unit 5, the red pepper of the sorting unit 6, the conveying conveyor, and the like are configured to be driven or stopped by an on / off operation of a threshing clutch 55 provided on the belt 43.

  Further, a pulley 56 provided on the threshing input shaft together with the driven pulley 42 and a pulley 57 provided on the cutting input shaft together with the cutting pulley 32 are connected by a belt 58, and a cutting portion is also connected from these pulleys 56 57 and the belt 58. The power from the engine 21 can be separately transmitted to each of the four devices. Each device of the cutting unit 4 is driven or stopped regardless of the forward travel, reverse travel, or stop of the airframe by the on / off operation of the inflow clutch 59 provided on the belt 58, and the drive speed is constant during the drive. It is configured as follows.

  Next, a configuration of a part of the power transmission mechanism 36 on the side of the grain tank 8 of the power transmission mechanism 36 that transmits power from the engine 21 to the grain discharging device 38 provided in the grain tank 8 among the belt type power transmission mechanisms of the combine will be described. .

  As shown in FIGS. 3, 4, and 5, a part of the power transmission mechanism 36 on the side of the grain tank 8 is configured as a belt-type power transmission mechanism, and between the engine 21 and the grain tank 8 on the right side of the fuselage. Is arranged. A driving pulley 61 disposed on the engine 21 side, a driven pulley 62 disposed on the Glen tank 8 side, and a belt 63 wound between the driving pulley 61 and the driven pulley 62 are provided. The driving pulley 61 is positioned between the engine 21 and the Glen tank 8 when viewed from the right side of the body, and the driven pulley 62 is positioned at the front (outside) of the body, and the belt 63 extends in the left-right direction. It is provided as follows.

  The discharge clutch 39 is arranged between the drive pulley 61 and the driven pulley 62. The discharge clutch 39 is a belt tension type clutch, and includes a tension roller 65 for tensioning the belt 63, a tension arm 66 that rotatably supports the tension roller 65, and the like. The operation means disposed in the driving operation unit 15 is connected via the operation means, and the operation means is operated so that the belt 63 is pressed and tensioned by the tension roller 65, or the pressure is released and relaxed. The on / off state of the discharge clutch 39 is switched.

  That is, when the tension arm 66 is rotated via the link mechanism 67 by the operating means and the tension roller 65 presses the belt 63, the discharge clutch 39 is in an on state because the belt 63 is tensioned and tensioned. The power is transmitted from the drive pulley 61 to the driven pulley 62. On the other hand, when the tension roller 65 releases the pressing of the belt 63, the belt 63 is turned off because the belt 63 does not obtain tension, and the transmission of power from the driving pulley 61 to the driven pulley 62 is cut off. Yes. Thus, the transmission of power from the drive pulley 61 to the driven pulley 62 can be connected / disconnected by the discharge clutch 39.

  Finally, the configuration of the main part of the present invention will be described.

  As shown in FIGS. 4 to 7, in the above-described belt type power transmission mechanism, belt pressers 70 and 80 are provided as means for preventing the belt 63 from being detached from the driving pulley 61 and the driven pulley 62. The belt pressers 70 and 80 are provided outside the outer circumferences of the drive pulley 61 and the driven pulley 62, and are arranged so as not to contact the pulleys 61 and 62 and the belt 63 wound around the pulleys 61 and 62. In this embodiment, different belt pressers 70 and 80 are provided on both pulleys 61 and 62, but the same belt presser 70 or belt presser 80 may be provided on both pulleys 61 and 62, or one pulley may be provided. One of the belt pressers 70 or the belt presser 80 may be provided only on 61 and 62.

  The belt presser 70 provided on the drive pulley 61 on the inner (inner side) of the machine body is made of a bar, and upper, middle, and lower pressers 70a, 70b, 70c formed by bending the bar, and upper and lower connecting parts 70d, 70e and upper and lower guide portions 70f and 70g, and is configured to cover the belt 63 wound around the drive pulley 61 by the upper, middle, and lower press portions 70a, 70b, and 70c. The upper connecting portion 70d disposed on one side of the drive pulley 61 is attached to a transmission case 69 that houses a part of the power transmission mechanism 36 on the side of the Glen tank 8 via a mounting stay 71, and the engine 21 and the Glen tank. 8 is fixed to the engine 21 side.

  The upper, middle, and lower presser portions 70a, 70b, and 70c are formed in a shaft shape, and above the outer peripheral portion of the drive pulley 61 so that each axis is parallel to the axis of the rotation shaft 73 of the drive pulley 61. The upper presser portion 70a is provided on the center side (opposite side of the driven pulley 62), and the lower presser portion 70c is provided on the lower side. These presser portions 70 a, 70 b, and 70 c are substantially outside the outer periphery of the drive pulley 61 by the thickness of the belt 63 from the outer periphery of the drive pulley 61, and around the rotation shaft 73 of the drive pulley 61. The belts 63 are arranged so as to be spaced apart at equal intervals, and are covered at three places, an upper side, a central side, and a lower side of the belt 63 wound around the drive pulley 61.

  Thus, as shown in FIG. 6, the upper, middle, and lower pressers 70 a, 70 b, and 70 c have a distance L 3 between the outer periphery of the drive pulley 61 and the upper presser 70 a, and the outer periphery of the drive pulley 61 and the intermediate presser 70 b. And the distance L5 between the outer peripheral portion of the drive pulley 61 and the lower presser portion 70c are substantially the same as the thickness L1 of the belt 63, or the thickness L1 is slightly longer. Even if the presser portions 70a, 70b, and 70c are likely to come off the drive pulley 61, it is possible to hold the belt 63 so that the belt 63 does not protrude to the outer peripheral side from the presser portions 70a, 70b, and 70c. It has become.

  The upper and lower connecting portions 70d and 70e are obliquely provided substantially parallel to the side surface of the drive pulley 61 so as to be positioned on the opposite sides of the drive pulley 61. The upper connecting portion 70d is disposed on the side of the engine 21 that is one side of the drive pulley 61, and its upper end is connected to one side end of the upper presser portion 70a, and its lower end is connected to the engine 21 side end of the intermediate presser portion 70b. Configured. On the other hand, the lower connecting portion 70e is disposed on the side of the grain tank 8 that is the other side of the drive pulley 61, and the upper end thereof is connected to one side end of the intermediate presser portion 70b and the lower end is connected to one side of the lower presser portion 70c. It is connected to the side end.

  That is, as shown in FIG. 6, the upper connecting portion 70 d extends obliquely upward to the right from the front end of the intermediate presser portion 70 b disposed on the outer side of the driving pulley 61 on the left side of the rotating shaft 73. It is connected to the rear end of the upper presser portion 70a at the upper right position. On the other hand, the lower connecting portion 70e extends obliquely downward to the right from the rear end of the intermediate presser portion 70b, and is connected to the rear end of the lower presser portion 70c at the lower right position of the drive pulley 61.

  The upper and lower guide portions 70f and 70g are obliquely provided substantially parallel to the side surface of the drive pulley 61 so as to be positioned on the opposite sides of the drive pulley 61. The upper guide portion 70f is disposed on the upper side of the side of the grain tank 8 that is opposite to the upper connecting portion 70d, and the upper end thereof is connected to the end of the upper presser portion 70a on the side of the Glen tank 8, and the lower end is connected to the drive pulley 61. The belt 63 is wound on the inner side of the belt 63, that is, positioned below the upper side of the belt 63. On the other hand, the lower guide portion 70g is arranged on the lower side of the engine 21 side opposite to the lower connection portion 70e, and the lower end thereof is connected to the engine 21 side end of the lower presser portion 70c, and the upper end is driven pulley. It is configured to be positioned inside the belt 63 wound around the belt 61, that is, above the lower side portion of the belt 63.

  That is, as shown in FIG. 6, the upper guide portion 70 f is obliquely lower right (from the rear view) than the rear end of the upper presser portion 70 a so that the position of the tip is positioned lower than the upper belt 63 in the rear view. The upper connecting portion 70d extends substantially at a right angle, and when viewed from the side, extends approximately at a right angle to the upper presser portion 70a. On the other hand, the lower guide portion 70g is diagonally right above the front end of the lower presser portion 70c so that the tip of the lower guide portion 70g is overlapped with the lower belt 63 in a rear view in a state where the lower end is tensioned by the tension roller 65. (Approximately perpendicular to the lower connecting portion 70e in the rear view and approximately perpendicular to the lower presser portion 70c in the side view).

  In this way, the intermediate presser portion 70b, the upper presser portion 70a, and the lower presser portion 70c are integrally connected through the upper and lower connecting portions 70d and 70e, and the belt presser 70 is configured in a substantially V shape in the rear view. It is arranged so that the open side in the rear view faces the driven pulley 62 side. Further, the upper guide portion 70f is integrally connected to the side opposite to the upper connection portion 70d of the upper presser portion 70a, and the lower guide portion 70g is integrally connected to the side opposite to the lower connection portion 70e of the lower presser portion 70c. The portions 70f and 70g are respectively extended downward and upward toward the belt 63 to form both end portions of the belt retainer 70, whereby the belt retainer 70 is configured in a substantially S shape in side view.

  The belt retainer 70 is disposed outside the outer periphery of the drive pulley 61. As shown in FIG. 7, the distance L6 between the upper guide portion 70f and the side surface of the drive pulley 61 is larger than the width L2 of the belt 63. It is installed so as to be wide, and the distance L7 between the lower guide portion 70g and the side surface of the drive pulley 61 is set to be narrower than the width L2 of the belt 63. Further, the upper connecting portion 70f on the same side as the upper guide portion 70f and the side surface of the drive pulley 61 are disposed such that the distance L8 is wider than the width L2 of the belt 63, and the upper connecting portion on the same side as the lower guide portion 70g. The distance L9 between 70d and the side surface of the drive pulley 61 is set to be narrower than the width L2 of the belt 63. Here, the interval between the upper guide portion 70f and the upper connecting portion 70d is the same as the interval between the lower guide portion 70g and the lower connecting portion 70e. When the interval is L10, 2 × L2 <L10 < It is set to be 3 × L2.

  Therefore, the belt retainer 70 has a gap L6, L8 between the side surface of the drive pulley 61 and the upper guide portion 70f and the lower connecting portion 70e located on the side of the grain tank 8 and wider than the width L2 of the belt 63. The belt 63 can be wound around the drive pulley 61. Since the distances L7 and L9 between the side surface of the drive pulley 61 and the lower guide portion 70g and the upper coupling portion 70d located on the engine 21 side are narrower than the width L2 of the belt 63, the belt 63 can be disengaged to the engine 21 side. Absent. As a result, a part of the tip side is moved to the side of the drive pulley 61 while the belt retainer 70 is attached to the transmission case 69 with the attachment stay 71 and the belt 63 is in an elliptical ring shape. After that, the belt presser 70 is guided by the upper guide portion 70f from the wide glen tank 8 side and wound between the belt presser 70 and the outer periphery of the drive pulley 61, and the upper, middle, and lower presser portions 70a. It can be prevented from coming off by covering with 70b and 70g.

  As described above, the belt-type power transmission mechanism is configured by winding the belt 63 between the driving pulley 61 and the driven pulley 62, and is disposed on the outer periphery of one or both pulleys 61 and 62. In the belt retainer 70 for preventing the belt 63 from coming off from the 61 and 62, the belt retainer 70 is formed by bending a bar material into a substantially S shape in a side view and a substantially V shape in a rear view. By disposing the open side in the rear view so as to face the other pulley 62 side, the belt 63 is taken in and out between the belt presser 70 and the drive pulley 61, and the belt presser 70 is moved from the outer periphery of the drive pulley 61. Without being removed, it can be wound around the drive pulley 61 or removed from the drive pulley 61, making it easy to replace the belt 63 and performing maintenance work. It is possible to improve the. In addition, the belt retainer 70 can be easily configured with a single bar, and the attachment work of the belt retainer 70 can be facilitated, and the number of parts can be reduced and manufactured at low cost. However, the belt presser 70 can be configured by bending or welding a plate or the like.

  The belt-type power transmission mechanism is formed by winding a belt 63 between a driving pulley 61 and a driven pulley 62. The belt-type power transmission mechanism is disposed on the outer periphery of one or both pulleys 61 and 62, and each pulley 61 and 62 is disposed. In the belt presser 70 that prevents the belt 63 from coming off, the belt presser 70 is spaced from the outer peripheral portion of the drive pulley 61 by the thickness of the belt 63 and spaced apart from each other at substantially equal intervals. The shaft includes at least three upper, lower, middle, and lower presser portions 70a, 70b, and 70c arranged in parallel with the axis of the rotary shaft 73, and the upper presser portion 70a and the intermediate presser portion 70b are driven by the upper connecting portion 70d. Connected on one side of the pulley 61, the intermediate presser portion 70b and the lower presser portion 70c are connected on the other side of the drive pulley 61, and extend downward on the opposite side of the upper presser portion 70a to the upper connecting portion 70d. To put out The upper and middle and lower presser portions of the belt presser 70 are connected to each other and connected to the lower guide portion 70g extending upward on the opposite side of the lower connecting portion 70e of the lower presser portion 70c. The belt presser 70 can be wound around the drive pulley 61 or removed from the drive pulley 61 without removing the belt presser 70 from the outer periphery of the drive pulley 61 by inserting / removing it between the drive pulley 61 and 70a / 70b / 70c. Thus, the replacement work of the belt 63 can be facilitated, and the workability during maintenance can be improved. Further, when the belt presser 70 is inserted between the upper and lower pressers 70a, 70b, and 70c of the belt presser 70 and the drive pulley 61, the belt 63 is not wound around the upper or lower presser parts 70a and 70c. In addition, it is possible to guide with the guide portions 70f and 70g, and it is possible to wind around the drive pulley 61 accurately.

  Further, the belt retainer 70 is configured such that one of the distance between the side surface of the drive pulley 61 and the upper guide portion 70g and the distance between the side surface of the drive pulley 61 and the lower guide portion 70g is wider than the width of the belt 63. By configuring the other interval to be narrower than the width of the belt 63, the belt 63 can be easily wound around the drive pulley 61 or removed from the drive pulley 61 from the wider interval. On the other hand, if the belt 63 is wound around the upper guide portion 70f from the upper guide portion 70f to the outside of the upper presser portion 70a on the same upper and lower sides, there is no margin in the belt length. On the other hand, since the belt 63 cannot be moved, it is possible to prevent an error in winding the belt 63 around the belt presser 70 instead of the drive pulley 61.

  As in this embodiment, the belt-type power transmission mechanism is a narrow space between the engine 21 and the grain tank 8 of the combine 1, and the driving pulley 61 is on the inner side (inside) and the driven pulley 62 is on the front (outside). When the belt presser 70 is arranged on the drive pulley 61 on the rear side (inner side) of the machine body, the glen tank 8 is opened and rotated to the side of the machine body so that the belt presser 70 is attached to the drive pulley 61. Even if it is not removed from the outer periphery, it is possible to easily wind the belt 63 around the drive pulley 61 by putting a hand into the space from the front side of the machine body with the glen tank 8 arranged on the machine body frame 2. Therefore, when the belt 63 is cut or the like and needs to be replaced, even if it is difficult to open and rotate the grain tank 8 due to a large amount of grains, the belt 63 is easily replaced. be able to.

  On the other hand, as shown in FIGS. 4, 5, and 8, the belt presser 80 provided on the driven pulley 62 on the front (outside) side of the machine body is made of a bar material, and upper and lower presser parts formed by bending the bar material. 80a and 80b, upper and lower connecting portions 80c and 80d, and upper and lower guide portions 80e and 80f, so that the belt 63 wound around the driven pulley 62 by the upper and lower pressing portions 80a and 80b is not easily covered. It is configured. The upper and lower connecting portions 80c and 80d arranged on one side of the Glen tank 8 are attached to the front portion of the Glen tank 8 via a mounting stay 81, and between the engine 21 and the Glen tank 8 on the Glen tank 8 side. It is supposed to be fixed. In other words, the belt presser 70 on the drive pulley 61 side is fixed to the front side (engine 21 side) and the belt presser 80 on the driven pulley 62 side is fixed to the rear side (Glen tank 8 side), and the belt 63 is moved forward from the driven pulley 62. And is left on the drive pulley 61 side.

  The upper and lower presser portions 80a and 80b are formed in a shaft shape, and above and below the outer peripheral portion of the driven pulley 62 so that the respective shaft centers are parallel to the axis of the rotating shaft 83 of the driven pulley 62. Is provided. The upper and lower presser portions 80a and 80b are respectively arranged on the outer periphery of the driven pulley 62 by the thickness of the belt 63 from the outer peripheral portion of the driven pulley 62, and the belt 63 wound around the driven pulley 62 is placed at two locations on the upper and lower sides. It is configured so that it can be covered.

  The upper and lower connecting portions 80 c and 80 d are provided substantially parallel to the side surface of the driven pulley 62 so as to be located on the same side of the driven pulley 62. The upper connecting portion 80 c is disposed on the upper side of the driven pulley 62 on the side of the Glen tank 8, the upper end thereof is connected to the end of the upper presser portion 80 a on the Glen tank 8 side, and the lower end side is connected to the upper portion of the mounting stay 81. Configured. On the other hand, the lower connecting portion 80d is disposed below the upper connecting portion 80c and on the lower side of the driven pulley 62 on the side of the Glen tank 8, and the lower end of the lower connecting portion 80d is connected to the Glen Tank 8 side end of the lower presser portion 80b. Is connected to the lower part of the mounting stay 81.

  The upper and lower guide portions 80e and 80f are respectively extended above and below the upper and lower pressing portions 80a and 80b so as to be located on the same side on the other side of the driven pulley 62. The upper guide portion 80e is provided obliquely above the upper presser portion 80a on the side of the engine 21, and has a lower end connected to the engine 21 side end of the upper presser portion 80a and an upper end disposed on the glen tank 8 side. Has been. On the other hand, the lower guide portion 80f extends on the side of the engine 21 to the lower side of the lower presser portion 80b, and connects the upper end with the end of the lower presser portion 80b on the engine 21 side and the lower end of the fuselage below the Glen tank 8. In the vicinity of the frame 2, the distance L <b> 11 is arranged so as to be smaller than the thickness L <b> 1 of the belt 53.

  In this way, the upper presser portion 80a and the lower presser portion 80b are integrally connected via the mounting stay 81 by the upper and lower connecting portions 80c and 80d, and the belt presser 80 is configured in a substantially letter shape in side view. It arrange | positions so that the open side in a side view may face the engine 21 side. Further, the upper guide portion 80e is integrally connected to the side opposite to the upper connection portion 80c of the upper presser portion 80a, and the lower guide portion 80f is integrally connected to the side opposite to the lower connection portion 80d of the lower presser portion 80b. The portions 80e and 80f are respectively extended upward and downward on the opposite side of the belt 63 to form both ends of the belt retainer 80, whereby the belt retainer 80 is configured in a substantially I shape when viewed from the back.

  Thus, with the belt presser 80 being attached to the front portion of the glen tank 8 by the mounting stay 81, the belt presser 80 and the driven pulley 62 outer peripheral portion are guided while the belt 63 is guided by the upper guide portion 80e and the lower guide portion 80f. And is wound around the driven pulley 62 and can be covered with the upper and lower presser portions 80a and 80b. Therefore, the belt 63 can be wound around the driven pulley 62 or removed from the driven pulley 62 so that the belt 63 can be easily replaced. Further, when the belt 63 is wound around the driven pulley 62, if the belt 63 is wound from the upper guide portion 80e to the outside of the upper presser portion 80a, there is no margin in the length of the belt 63. Since the belt 63 cannot be moved between the guide portion 80f and the machine body frame 2, it is possible to prevent the belt 63 from being erroneously wound around the upper and lower presser portions 80a and 80b of the belt presser 80 instead of the driven pulley.

The side view which shows the whole structure of a combine. The top view which shows the whole structure of a combine. The figure which shows the structure of the power transmission mechanism of a combine. The rear view of a belt type power transmission mechanism. The top view of a belt type power transmission mechanism. The rear view of a belt presser. The side view of a belt presser. The side view of other belt pressers.

Explanation of symbols

61 Drive pulley 62 Driven pulley 63 Belt 70 Belt presser 70a Upper presser part 70b Intermediate presser part 70c Lower presser part 70d Upper connection part 70e Lower connection part 70f Upper guide part 70g Lower guide part 73 Rotating shaft

Claims (3)

  A belt type power transmission mechanism constructed by winding a belt between a driving pulley and a driven pulley, and arranged on the outer periphery of one or both pulleys to prevent the belt from coming off from each pulley. The belt presser is configured to have a substantially S-shape when viewed from the side by bending a bar, and is configured so as to be approximately V-shaped when viewed from the back, with the open side facing the other pulley side when viewed from the back. Belt presser characterized by.   A belt type power transmission mechanism constructed by winding a belt between a driving pulley and a driven pulley, and arranged on the outer periphery of one or both pulleys to prevent the belt from coming off from each pulley. The belt presser is at least upper, middle, and lower in the shape of a shaft that is arranged outside the outer peripheral portion of each pulley by the thickness of the belt and spaced apart from each other at substantially equal intervals and in parallel with the axis of the rotation shaft of the pulley. The upper presser part and the intermediate presser part are connected to one side of the pulley by the upper connecting part, and the intermediate presser part and the lower presser part are connected to the other side of the pulley, An upper guide portion extending downward is connected to the side opposite to the upper connection portion of the upper presser portion, and a lower guide portion extending upward is connected to the side opposite to the lower connection portion of the lower presser portion. Belt presser characterized by that.   One of the interval between the pulley side surface and the upper guide portion and the interval between the pulley side surface and the lower guide portion is configured such that one interval is wider than the belt width and the other interval is narrower than the belt width. The belt presser according to claim 2.

Images