JP2005153665A - Truck for attaching/detaching crawler belt - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a truck for attaching/detaching a crawler belt capable of efficiently attaching and detaching the crawler belt. <P>SOLUTION: This truck for a attaching/detaching crawler belt is provided with a loading part 3 to be loaded with the crawler belt 2, which is displaced from a crawler belt type working machine, and structured to move for running. A supporting mechanism 5 for lifting an upper side belt part 2a of the crawler belt 2 to be attached/detached to release engagement thereof with an upper side guide rolling wheel 4 is provided to integrally move for running with the loading part 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a crawler belt detachable carriage that includes a placement portion that places and supports a crawler belt that is detached from a crawler belt-mounted work machine and is configured to be movable.

  The crawler belt attaching / detaching carriage is used when performing an operation of attaching / detaching a crawler belt to a crawler belt wearing type working machine such as a combine, for example. The attachment / detachment work has been conventionally performed as follows.

  That is, the work machine is jacked up so that the ground contact surface of the crawler belt is lifted from the ground, the tension ring provided on the rear side of the crawler belt is adjusted to weaken the belt tension, and the hydraulic cylinder The crawler belt is pushed and spread using a telescopic operation mechanism composed of, etc., and the engagement with the tension ring is released, and a spacer is sandwiched between them to avoid re-engagement due to the weight of the crawler belt. In this state, the rear part of the crawler belt was manually pulled out laterally. Further, the telescopic operation mechanism is configured to receive and support the base end side by a support member installed over a pair of adjacent rollers, and press the front end side against the inner surface side of the crawler belt to expand it ( For example, see Patent Document 1.)

  In this way, the crawler belt with the rear side part pulled out laterally outward is placed on the carriage to support the load, while the ground guide wheel other than the crawler belt tensioning wheel, the driving sprocket, etc. Is released from the airframe by moving the cart to the lateral outer side of the airframe. In other words, the crawler belt provided in a working machine such as a combine machine has a large weight and is difficult to carry by hand, so that the crawler belt is placed on and supported by a carriage equipped with wheels for movement. It is.

  Conventionally, the cart used for such a crawler belt attaching / detaching operation is provided with a moving wheel on the lower surface side of the placing portion for placing and supporting the crawler belt, and the crawler belt is placed and moved. It was the composition with only.

JP-A-5-319326

  In the above conventional configuration, it is possible to reduce the labor burden on the worker by placing and supporting the crawler traveling device with a large load by the carriage, but there is a disadvantage as follows and there is room for improvement. .

  In the crawler traveling device as described above, the upper side guide rollers are provided at the front and rear intermediate portions in order to prevent the upper belt portion of the crawler belt from hanging down or being displaced laterally. As described above, after releasing the engagement with the tension wheel, the crawler belt is placed on the carriage to release the engagement with the drive sprocket while supporting the load and removed to the outside of the machine body. When the work is performed, the upper belt portion of the crawler belt is engaged with the upper guide roller, so that the crawler belt cannot be removed as it is. Therefore, conventionally, after extending the crawler belt using an expansion / contraction operation mechanism and sandwiching a spacer between the tension ring and the crawler belt, the expansion / contraction operation mechanism is temporarily retracted, and the expansion / contraction operation mechanism is driven by the crawler. Place the crawler belt on the outer side of the fuselage with the upper belt portion of the crawler belt lifted upward and spread to disengage from the upper guide roller, and positioned at the middle part of the machine. It was necessary to carry out the removal work, which was a troublesome work.

  In addition, when the above-described expansion / contraction operation mechanism is mounted, a support member is attached in a state of being laid over a pair of adjacent rollers, and the base end side of the expansion / contraction operation mechanism is received and supported on the support member to be a crawler belt. It was necessary to install so as to spread out, and the installation work was also troublesome.

  It should be noted that without using such an expansion / contraction operation mechanism, the tensioning ring is adjusted in position to weaken the belt tension, and a metal rod such as a bar is used between the crawler belt and the tensioning ring. It is also possible to remove the crawler belt by releasing the engagement between the crawler belt and the upper guide roller. However, as described above, the crawler belt has a large weight. It has been difficult to manually disengage the guide wheels and the upper guide rollers at the same time.

  Accordingly, the present invention has been made paying attention to such a point, and an object thereof is to provide a crawler belt attaching / detaching cart capable of performing the attaching / detaching operation of the crawler belt as efficiently as possible.

  A first characteristic configuration of the present invention is a crawler belt attaching / detaching carriage configured to be movable and provided with a mounting portion for mounting and supporting a crawler belt detached from a crawler belt-mounted working machine, A support mechanism that lifts and supports the upper belt portion of the crawler belt to be attached / detached so as to be disengaged from the upper guide roller is provided in a state that can move and travel integrally with the mounting portion. There is in point.

  According to the first characteristic configuration, when removing the crawler belt from the work machine, the work unit is jacked up so that the grounding surface of the crawler belt is lifted from the ground, and the placement unit is placed below the crawler belt. When moved to the side, the support mechanism also moves integrally, so that the support mechanism moves to a position where the upper belt portion of the crawler belt can be lifted and supported as the placement portion moves. Will do. That is, the placing portion and the support mechanism can be simultaneously moved to the position for attaching / detaching work.

  Then, the upper belt portion can be lifted and supported so as to be disengaged from the upper guide roller by the support mechanism, and in this state the upper belt portion is lifted and supported by the support mechanism. The crawler belt can be removed laterally outward by adjusting the position of the tension ring to weaken the belt tension and releasing the engagement between the tension ring and the crawler belt. At this time, it is not necessary to separately perform the operation of releasing the engagement between the upper belt portion of the crawler belt and the upper guide roller, and only the operation of releasing the engagement between the tensioning wheel and the crawler belt is performed. Work well and efficiently. The work of releasing the engagement between the tension wheel and the crawler belt may be performed by manually spreading the crawler belt using a bar or the like, or an expansion / contraction operation mechanism such as a hydraulic cylinder. May be used.

  Then, with the crawler belt removed and placed on and supported by the placement unit, the placement unit is moved laterally outward. At that time, the support mechanism lifts and supports the upper belt portion. In other words, in other words, while the engagement between the upper belt portion of the crawler belt and the upper guide roller is maintained, it moves integrally laterally outward with the mounting portion. Therefore, the crawler belt can be smoothly removed laterally outward.

  Thus, the crawler belt attaching / detaching cart capable of performing the attaching / detaching operation of the crawler belt as efficiently as possible has been provided.

  According to a second characteristic configuration of the present invention, in addition to the first characteristic configuration, the support mechanism can receive a load of the upper belt portion of the crawler belt, and a lifting operation mechanism that lifts and lowers the support arm. It is in the point comprised with.

  According to the second characteristic configuration, when the crawler belt is removed from the work machine, the support arm is positioned so as to correspond to the lower side of the upper belt portion, and the placing portion is moved to the lower side of the crawler belt. Thus, the support arm that moves integrally with the mounting portion enters a state in which the lower side of the crawler belt is directed toward the inner side of the machine body. Then, when the support arm is raised by the lifting operation mechanism, the support arm is pushed upward while receiving the load of the upper belt portion, and the engagement between the upper belt portion and the upper guide roller is released. . As the elevating operation mechanism, various elevating operation mechanisms such as a manual operation type using a screw type booster mechanism and a drive type using an actuator can be used.

  Therefore, the operator can easily perform an operation of releasing the engagement between the upper belt portion and the upper guide roller using the lifting operation mechanism in a state where the work load is small.

  The third feature configuration of the present invention is that, in addition to the first feature configuration or the second feature configuration, the support mechanism is detachably attached to the mounting portion.

  According to the third feature configuration, after the crawler belt attaching / detaching operation is completed, the support mechanism is removed from the mounting portion, and the crawler belt is stored in the storage place in a compact shape without taking up space. be able to.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a working cart 1 as a crawler belt attaching / detaching cart according to the present invention. The work carriage 1 includes a placing portion 3 that places and supports the crawler belt 2 that is removed from the combine A as a crawler belt-mounted working machine as shown in FIG. The support mechanism 5 that lifts and supports the upper belt portion 2a of the crawler belt 2 to be attached / detached so as to be disengaged from the guide roller 4 on the upper side, It is provided in a state where it can move and travel integrally. The support mechanism 5 includes a support arm 6 capable of receiving the load of the upper belt portion 2a of the crawler belt 2 and a lifting operation mechanism 7 that moves the support arm 6 up and down.

  In other words, the four long frame bodies 8 made of metal square members provided in a state where they are arranged in parallel at appropriate intervals, and both longitudinal ends of the four long frame bodies 8 are provided. An end frame body 9 that connects the parts is integrally connected by welding to receive a load (about 200 kg) of the crawler belt 2 and can be placed and supported. And it is the structure which reinforces strength by connecting the elongate frame bodies 8 with the reinforcing material 10 in an appropriate place. In addition, a plurality of caster wheels 11 are provided on the lower surface side of both sides in the longitudinal direction of the mounting portion 3 described above, and configured to be movable while the crawler belt 2 is mounted and supported on the mounting portion 3. ing.

  In addition, it is installed across two long frame bodies 8 on the side of one side of the center of the mounting portion 3 in the longitudinal direction, on the upper surface portion side and the lower surface side of the mounting portion 3. An upper protruding frame 12a and a lower protruding frame 12b are provided in a state of protruding outward. The projecting frames 12a and 12b on both the upper and lower sides are supported by being welded and fixed to the two long frame bodies 8, and an elevating operation mechanism is provided at the tip of each projecting frame 12a and 12b. 7 is provided.

  The elevating operation mechanism 7 has an inner / outer double shaft structure of an inner shaft 13 extending in the vertical direction and a cylindrical outer shaft 14 slidably fitted on the inner shaft 13. 13 is received and supported in a state of being inserted into a locking recess 16 formed in the lower protruding frame 12b through the insertion hole 15 formed in the upper protruding frame 12a. That is, the load is supported in a state in which the posture in which the axial center direction is vertical is maintained. Further, a lifting operation portion 17 is provided at an upper end portion of the outer shaft 14, and the outer shaft 14 is moved with respect to the inner shaft 13 by operating a manual operation lever 18 in the lifting operation portion 17. It is configured to slide relatively upward. Although not described in detail, the elevating operation unit 17 is configured to be able to exert a large lifting operation force with a light operation force using a well-known screw type booster mechanism.

  A support arm 6 is provided in the middle of the outer shaft 14 in the vertical direction, and the support arm 6 is integrally raised as the outer shaft 14 moves upward. The support arm 6 is fixedly attached to the outer shaft 14 in a cantilevered state so as to be in a substantially horizontal posture across the placement unit 3, and the support arm 6 is fixed to the upper belt portion 2 a of the crawler belt 2. The load can be received.

  The elevating operation mechanism 7 and the support arm 6 constitute the support mechanism 5, and the support mechanism 5 is provided so as to be able to move and travel integrally with the placement unit 3. The support mechanism 5 is detachably attached to the mounting portion 3 described above. That is, as shown in FIG. 2, the inner shaft 13 in the lifting operation mechanism 7 is inserted from the upper side so as to pass through the insertion hole 15 formed in the upper protruding frame 12a, and formed in the lower protruding frame 12b. It is mounted by being inserted so as to fit into the locking recess 16 and can be easily removed by removing it upward from the state supported by the upper and lower protruding frames 12a and 12b. It has a possible configuration. Therefore, when the work cart 1 is stored in a state where it is not used, it can be stored in a compact shape by removing the support mechanism 5.

Next, an operation procedure when the crawler belt 2 of the combine is removed using the work carriage 1 having the above configuration will be described.
First, the configuration of the crawler traveling device 19 provided in the combine A will be described. As shown in FIG. 3, the crawler traveling device 19 is provided with a track frame 21 connected to the machine body side frame 20 so that the longitudinal direction thereof is in the longitudinal direction of the machine body. The crawler belt 2 is wound around the wheel 22, the driving sprocket 23 on the front side of the machine body, and the tensioning wheel body 24 on the rear side of the machine body. The tension ring 24 is attached to the track frame 21 so as to be slidable in the front-rear direction by rotating a position adjusting screw 25. By adjusting the position of the tension ring 24, the crawler belt 2 The tension can be adjusted and adjusted. Further, as shown in FIGS. 6 and 7, a pair of left and right cored bar projections 26 are formed on the inner peripheral surface of the crawler belt 2 at a predetermined pitch. 26 is configured to apply tension to the crawler belt 2 while preventing the crawler belt 2 from coming off.

  When removing the crawler belt 2 of such a combine A, first, as shown in FIG. 3, the entire machine body of the combine A is lifted by the jack-up device 27 to lift the crawler belt 2 from the ground. Then, as shown in FIG. 4, the placement unit 3 of the work carriage 1 is moved so as to be positioned below the crawler belt 2. At this time, the support mechanism 5 also moves integrally. However, as shown in FIG. 5, the support arm 6 is positioned below the upper belt portion 2 a of the crawler belt 2 and at the upper guide roller. 4 is inserted so as to enter the inward side through the vicinity of 4. Then, the crawler belt is operated until the support arm 6 is lifted by operating the lifting operation portion 17 in the lifting operation mechanism 7 and the engagement between the core metal projection 20 and the upper guide roller 4 in the upper belt portion 2a is released. 2 upper belt portion 2a is pushed upward.

  Next, as shown in FIG. 6, the tension ring body 24 is moved to a position where the tension force is weakened by operating the tension adjusting screw 25 using an air driver or the like, for example, as shown in FIG. Then, the crawler belt 2 is pushed and spread using the bar 28 to release the engagement between the core metal projection 26 and the tension ring body 24 in the crawler belt 2. When the engagement between the crawler belt 2 and the tension ring body 2 is released in this way, the rear part of the machine body side of the crawler belt 2 can be removed toward the outer side of the machine body.

  Since the crawler belt 2 removed from the combine A is received and supported in a state in which a load is supported on the placement portion 3 of the work carriage 1, the work carriage with the crawler belt 2 placed in this way is supported. 1 is moved toward the outside of the aircraft side. After that, the engagement between the drive sprocket 23 and the plurality of ground guide rollers 22 on the front side of the machine body is released, and the work carriage 1 can be moved to the lateral outer side of the machine body to be removed from the machine body. it can. At this time, as shown in FIGS. 8 and 9, the support arm 6 moves integrally with the mounting portion 3 while maintaining the state where the upper belt portion 2a of the crawler belt 2 is pushed upward. Even if the operation is not performed, the engagement between the upper belt portion 2a and the upper guide roller 4 is maintained.

[Another embodiment]
Hereinafter, other embodiments are listed.

(1) In the above embodiment, a manual operation type using a screw type booster mechanism is exemplified as the expansion / contraction operation mechanism, but instead of such a configuration, an operation of an actuator such as a hydraulic cylinder or an electric motor is operated. It is good also as a structure which expands / contracts using force.

(2) In the above embodiment, the support mechanism 5 includes the support arm 6 and the elevating operation mechanism 7. However, instead of such a configuration, for example, the support The arm 6 is provided in a state in which the upper belt portion 2a is fixed in advance at a position where the engagement with the upper guide roller 4 is released, and the placement portion 3 is moved to the lower side of the crawler belt 2. It is good also as a structure which lifts the upper side belt part 2a previously using an expansion-contraction operation mechanism etc., and inserts and inserts the support arm 6 in that state.

(3) In the above-described embodiment, the support mechanism 5 is detachably mounted on the placement unit 3. However, the present invention is not limited to this configuration, and the support mechanism 5 is described above. You may comprise in the state connected with the mounting part 3 in the state which cannot be removed.

The figure which shows the cart for crawler belt attachment and detachment Diagram showing the mounting location of the support mechanism Diagram showing work procedure Diagram showing work procedure Diagram showing work procedure Diagram showing work procedure Diagram showing work procedure Diagram showing work procedure Diagram showing work procedure

Explanation of symbols

2 Crawler Belt 2a Upper Belt Part 3 Placement Part 5 Support Mechanism 4 Guide Rolling Wheel 6 Support Arm 7 Elevating Operation Mechanism

Claims (3)

A crawler belt attaching and detaching carriage configured to be movable and provided with a mounting portion for mounting and supporting a crawler belt removed from a crawler belt wearing type work machine,
A support mechanism that lifts and supports the upper belt portion of the crawler belt to be attached / detached so as to be disengaged from the upper guide roller is provided in a state that can move and travel integrally with the mounting portion. A crawler belt removable carriage. The support mechanism is
The crawler belt attaching / detaching cart according to claim 1, further comprising: a support arm capable of receiving a load of the upper belt portion of the crawler belt; and an elevating operation mechanism for elevating the support arm.   The crawler belt attaching / detaching cart according to claim 1, wherein the support mechanism is detachably attached to the mounting portion.

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