JP3824594B2 - Combine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is equipped with a cutting and conveying device that cuts and conveys the planted cereals to the traveling machine body so that it can be moved up and down and slidably displaced in the left-right direction, and is conveyed by the cutting and conveying device. The present invention relates to a combine equipped with a threshing device equipped with a feed chain that receives and conveys a harvested cereal meal on one side.
[0002]
[Prior art]
In a combine as described above, the cutting and conveying device runs when the machine is cut and traveled in a state where the left and right intermediate points of the field are cut vertically and the grain planting area of the field is divided into left and right. By sliding and moving the cutting and conveying device in the left and right direction with respect to the traveling machine body so that it is located in front of each of the left and right crawler type traveling devices equipped on the machine body, the left and right sides of the aircraft are also moved. When carrying out the revolving operation in which the machine is circulated around the uncutted side while turning around from the outside of the cereal planting area of the field, the cutting and conveying device is positioned at the left and right side end position relative to the traveling machine. The left and right crawler-type traveling devices are used during cutting and harvesting operations such as mid-split operations and swiveling operations by sliding and moving the cutting and conveying device in the left and right direction relative to the traveling machine body so as to be positioned. Such as stepping with the planted culms will be able to avoid in advance a problem that occurs due.
[0003]
Conventionally, as a combine as described above, a guide for guiding the harvested cereals from the harvesting and conveying device to the feed chain by extending from the harvesting and conveying device toward the feed chain toward the upper part of the feed start side of the feed chain. There are some which are provided in the cutting and transporting apparatus so that the scissors can be relatively swung around the longitudinal axis with respect to the cutting and transporting apparatus with the cutting and transporting apparatus side as a fulcrum (see, for example, Patent Document 1).
[0004]
The threshing device has a horizontal axis centered between a lowering action position that contacts the upper part of the feed chain at the conveyance start end side and a lift release position that is spaced apart from the upper part of the conveyance start end side and opens the upper part of the feed chain at the conveyance start end side. When a supply guide that can be switched around is provided, and the cutting and conveying device is positioned at a specific mounting position in the left-right direction with respect to the traveling machine body, There is one provided with a pillow handling cover that enables switching of swinging around the horizontal axis from an unlocked action release state to an action state of covering the feed start end side of the feed chain from above (see, for example, Patent Document 2). .)
[0005]
[Patent Document 1]
JP-A-11-137053 (paragraph number 0024, FIGS. 1-4)
[Patent Document 2]
JP 2001-258372 A (paragraph number 0019-0028, FIG. 1-4)
[0006]
[Problems to be solved by the invention]
In the prior art described in Patent Document 1, since the guide rod only extends from the cutting and conveying device toward the upper part of the feed chain on the conveyance start end side, the guide rod is attached to the upper part of the feed chain on the conveyance start end side. The pillow handling operation | work which artificially supplies a cutting corn straw with respect to the feed chain which conveys and guides the cutting corn straw toward a threshing device can be performed with the state made to do. Further, as the cutting and conveying device slides in the left-right direction with respect to the traveling machine body, the guide rod swings around the vertical axis, and the guide terminal side comes into contact with the upper part of the feed chain on the conveying start end side. Therefore, regardless of sliding displacement in the left-right direction with respect to the traveling machine body of the cutting and conveying device, the harvested grain from the cutting and conveying device to the feed chain by the guide rod is provided. It can perform the conveyance guide of the bag well.
[0007]
However, the guide basket described in Patent Document 1 does not cover the conveyance start end side of the feed chain from above, so that it can be used as a mounting table for temporarily placing the harvested grain basket during a pillow handling operation. Therefore, it is difficult to manually supply the harvested cereal meal to the feed chain, and inconveniences such as bringing the tip side into contact with the feed chain are likely to occur. In addition, the guide rod swings around the vertical axis in accordance with the sliding displacement in the left-right direction with respect to the traveling machine body of the cutting and conveying apparatus while the guide terminal side is in contact with the upper part of the conveying start end of the feed chain. Therefore, there is a risk that excessive rubbing may occur between the guide rod and the feed chain. As a result, a contact point between the guide rod and the feed chain is likely to be worn out at an early stage.
[0008]
On the other hand, in the prior art described in Patent Document 2, since the supply guide is provided in the threshing device, the positional relationship between the feed chain and the supply guide regardless of the sliding displacement in the left-right direction with respect to the traveling machine body of the cutting and conveying device. In the state where the supply guide is positioned at the lowering action position, sliding in the left-right direction with respect to the traveling machine body of the cutting and transporting device according to the work mode such as the half-split work or the swivel work Regardless of the displacement, it is possible to satisfactorily guide the harvested cereal meal from the harvesting conveying device to the feed chain by the supply guide. In addition, at the time of pillow handling work, if the pillow handling cover is switched to the active state so that the conveyance start end side of the feed chain is covered from above, the pillow handling cover can be used as a mounting table for temporarily placing the harvested cereal rice cake, It becomes easier to supply artificially to the feed chain of harvested cereals.
[0009]
However, in the prior art described in Patent Document 2, it is necessary to switch the supply guide and the pillow handling cover depending on whether the harvesting and harvesting work or the pillow handling work is performed, and the pillow handling cover Switching to the operating state can only be performed with the cutting and conveying device positioned at a specific mounting position in the left-right direction with respect to the traveling machine body, and the pillow handling cover can be removed with the cutting and conveying device removed from that specific position. When it is necessary to switch to the operating state, the operation of displacing the cutting and conveying device with respect to the traveling machine body must also be performed, so there is room for improvement in improving the harvesting work efficiency.
[0010]
An object of the present invention is to enable good harvesting work and pillow handling work while improving harvesting work efficiency and the like.
[0011]
[Means for Solving the Problems]
〔Constitution〕
In order to achieve the above object, in the invention according to claim 1 of the present invention, a cutting and conveying device that harvests and conveys the planted cereal husk is conveyed to the traveling machine body so as to be able to swing up and down and slide in the left-right direction. In the combine equipped with a threshing device equipped with a feed chain that receives and conveys the harvested cereal mash conveyed by the harvesting and conveying device, and is connected and movably displaceable, the feed chain side and The harvested cereal from the harvesting and transporting device is extended to a state in which the harvesting and transporting device is in contact with the upper part of the feed start side of the feed chain from the harvesting and transporting device toward the feed chain. the equipped with guide lever that guides the feed chain, the culms guide with a pillow ironing cover from above the guide lever cover the conveyance starting end side of the feed chain, The pestle guide is configured to allow relative sliding in the left-right direction of the chopping and conveying device, and the pestle guide guides the reaping with the sliding displacement in the left and right direction of the chopping and conveying device. A maintaining mechanism for maintaining a predetermined position in the left-right direction with respect to the feed chain , comprising linkage means for pushing and pulling the culm guide so as to slide and displace in a direction opposite to the sliding displacement direction of the conveying device; It is provided.
[0012]
[Action]
According to the first aspect of the present invention, in order to position the cutting and conveying device at an appropriate position with respect to the traveling machine body according to the work mode such as the mid-split work and the turn-cutting work, Even if it is slid and displaced, the cereal guide is mounted on the cutting and transporting device that is slidingly displaced. The guide rod is kept in contact with the upper part of the feed chain on the conveyance start end side, and the pillow handling cover is maintained in a state of covering the conveyance start end side of the feed chain from above the guide rod.
[0013]
As a result, when performing harvest harvesting work such as mid-split work or swivel work, the harvesting transport device regardless of the sliding displacement in the left-right direction of the harvesting transport device relative to the traveling machine body according to the work mode at that time The harvested cereal culm is guided to the feed chain by the guide culm that is in contact with the upper part of the feed chain at the conveyance start end below the pillow handling cover.
[0014]
In addition, when performing a pillow handling operation, the harvested cereal husks that are artificially supplied to the feed chain can be fed from above the guide hoe regardless of the sliding displacement in the left-right direction of the chopping and conveying device with respect to the traveling machine body at that time. It can be temporarily placed on the pillow handle cover that covers the feed start end of the feed chain, so that the tip side of the feed chain comes into contact with the feed chain when artificially feeding the harvested cereal to the feed chain. Inconvenience is less likely to occur.
[0015]
Moreover, the culm guide is fed regardless of the lateral displacement of the cutting and transporting device relative to the traveling machine body by allowing the maintenance mechanism to allow the slidable transporting device to slide in the left and right direction with respect to the cereal guide. Since the guide rod is maintained at a predetermined position in the left-right direction with respect to the chain, in other words, the position where the guide rod comes into contact with the upper part of the feed chain on the conveying start end side, the cutting and conveying device is slid in the left-right direction relative to the traveling machine body. In doing so, there is no excessive rubbing between the guide rod and the feed chain, so that early wear of the guide rod and the feed chain due to the excessive rubbing can be avoided in advance.
[0016]
〔effect〕
In other words, there is no need to switch between the guide rod and the pillow handle cover depending on whether the harvest harvesting operation or the pillow handling operation is performed, and the feed is performed by the lateral displacement of the cutting and conveying device. In the harvesting and harvesting operation, without causing premature wear due to excessive rubbing between the chain and the guide rod, guide the harvested cereal to the feed chain by the guide rod to the feed chain. In addition, during the pillow handling operation, the pillow handling cover can be used as a mounting table for temporarily placing the harvested cereal meal, making it easier to manually supply the harvested grain meal to the feed chain. The cutting and harvesting work and the pillow handling work can be performed satisfactorily while improving the durability of the guide rod and the feed chain.
[0017]
〔Constitution〕
In the invention according to claim 2 of the present invention, in the invention according to claim 1, the maintenance mechanism connects the harvesting conveyance device and the culm guide so as to be capable of relative sliding in the left-right direction. A spring interposed between the cutting and conveying device and the culm guide in a state of biasing the connecting portion and the culm guide toward the outside of the left and right side portions of the chopping and conveying device; An inner wire is stretched over the traveling machine body and the culm guide at the predetermined position, and an outer wire is moved along the inner wire along the inner wire in accordance with a sliding displacement in the left-right direction of the cutting and conveying device. The linking wire is supported by the cutting and conveying device so as to be displaced in the same direction as the displacement direction.
[0018]
[Action]
According to the second aspect of the present invention, the culm guide is slidably displaced in the left-right direction with respect to the traveling machine body, although the culm guide is connected to the harvesting transport device via the connecting portion. In this case, relative sliding in the left-right direction with respect to the cutting and conveying device is allowed by the connecting portion, and the left and right other sides accompanying the displacement of the cutting and conveying device with respect to the traveling machine body in the left and right other side direction by the spring. The movement in the direction of the part is prevented, and further, the linkage wire prevents the movement of the cutting and conveying device relative to the traveling machine body in the direction of the left and right side part along with the displacement in the direction of the left and right side part. Thus, the feed chain is maintained at a predetermined position in the left-right direction.
[0019]
〔effect〕
In other words, it is relatively simple to connect the culm guide to the cutting and conveying device by the connecting part, urge the culm guide by the spring, and link the traveling machine body, the cutting and conveying device and the culm guide by the linkage wire. Although it is an inexpensive configuration, the culvert guide can be maintained at a predetermined position in the left-right direction with respect to the feed chain regardless of the sliding displacement in the left-right direction of the cutting and conveying device with respect to the traveling machine body. While simplifying the configuration and reducing the cost, the harvesting work efficiency and the durability of the guide rod and the feed chain can be improved, and the harvesting work and the pillow handling work can be performed satisfactorily.
[0020]
〔Constitution〕
According to a third aspect of the present invention, in the invention according to the first or second aspect, the corn straw connected to the cutting and conveying device in conjunction with the up and down swing of the cutting and conveying device. The guide start end side of the guide is configured to swing up and down with respect to the guide end side of the grain guide located above the feed start end of the feed chain.
[0021]
[Action]
According to the third aspect of the present invention, when the cutting and conveying apparatus is lifted and swung with respect to the traveling machine body, the guidance start end side of the culm guide is swung upward and swinging with respect to the guide end side. When the cutting and conveying device is lowered and swung with respect to the traveling machine body, the guidance start end side of the culm guide is lowered and swung with respect to the guide end side.
[0022]
That is, regardless of whether the cutting and conveying device is moved up and down with respect to the traveling machine body, the guidance start end side of the culm guide is maintained in a state extending from the cutting and conveying device to the guidance terminal side of the culm guide, and the guidance of the culm guide On the end side, the guide rod comes into contact with the upper part of the feed chain on the conveyance start end side, and the pillow handling cover maintains the state where the feed chain conveyance start end side is covered from above the guide rod.
[0023]
〔effect〕
Therefore, at the time of harvesting and harvesting work, it is possible to satisfactorily guide the harvested cereal from the harvesting and conveying device to the feed chain by the guide cage of the culm guide regardless of the cutting height adjustment for raising and lowering the harvesting and conveying device during the work. In addition, at the time of pillow handling work, regardless of the height position of the cutting and transporting device, the harvested cereal meal that is artificially supplied to the feed chain can be temporarily placed on the pillow handling cover of the cereal guide. As a result, the harvesting work and the pillow handling work can be performed satisfactorily regardless of the height position of the harvesting and conveying apparatus.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows the entire side surface of a combine. This combine is harvested at the front of a traveling machine body 2 that is driven by the drive of a pair of left and right crawler type traveling devices 1 and directed backward. The chopping and transporting device 3 to be transported is connected and mounted so as to be swingable up and down and slidable in the left and right direction. A threshing device 4 that performs a sorting process on the processed product, a grain tank 5 that stores grains from the threshing device 4, and the like are mounted on the traveling machine body 2, and the grain tank 5 in the traveling machine body 2 The boarding operation part 7 provided with the driver's seat 6 etc. in the front location is formed, and it is comprised by the self-removal form.
[0025]
The cutting and conveying device 3 has a plurality of weeding tools 9 for weeding a plurality of planted cereals lying down on the cutting frame 8 forming the framework, and planting after weeding by them. A plurality of pulling devices 10 that cause cereals, a clipper-shaped reaping device 11 that cuts the planting side of the planted cereals caused by them, and threshing backward while switching the chopped cereals from an upright position to a horizontal position And the like. The rear end portion of the cutting frame 8 is rotated relative to the front portion of the traveling machine body 2 around the first axial center X1 facing left and right. It is connected to be movable and relatively slidable along the first axis X1.
[0026]
The grain feeder 12 includes a latching transport mechanism 13 that latches and transports the head side of the harvested grain straw, a gripping transport mechanism 14 that grips and conveys the stock side of the harvested grain straw, and the like. The feed mechanism 15 feeds the tip side of the harvested cereal rice cake to the insertion port (not shown) formed on the front face of the threshing device 4, and the holding and transport mechanism 14 is provided on the left side of the threshing device 4. The stock side of the harvested cereal rice cake is handed over to the conveying start end.
[0027]
As shown in FIG. 2, a base frame 16 is provided at the front portion of the traveling machine body 2 so as to be swingable around a second axial center X <b> 2 facing left and right, which is set below the first axial center X <b> 1. 16 is provided with a screw-type lateral feed shaft 17 and a guide rod (not shown) extending side by side, and an electric motor 18 that rotationally drives the lateral feed shaft 17. A sliding body 19 that is laterally guided by the lateral feed shaft 17 and the guide rod in the lateral direction is installed over the guide rod as the lateral feed shaft 17 is driven to rotate. A U-shaped support portion 19A that is externally fitted from below and received and supported by the main frame portion 8A facing forward and backward is formed.
[0028]
In addition, a hydraulic cylinder 20 that swings and drives the base frame 16 around the second axis X2 from the traveling machine body 2 to the free end of the base frame 16 is installed. A presser bar 21 for preventing the main frame portion 8A from being detached is provided.
[0029]
That is, in this combine, by the operation of the electric motor 18, the position in the left-right direction of the cutting and conveying apparatus 3 with respect to the traveling machine body 2 is slid and displaced to an appropriate position according to the work mode such as the mid-split operation or the rotary cutting operation. The cutting and conveying device 3 can be easily slid, and the hydraulic cylinder 20 is operated to determine the vertical position of the cutting and conveying device 3 relative to the traveling machine body 2 in consideration of the length of the planted cereal culm. Thus, the cutting height adjustment for swinging and displacing to an appropriate position and the lifting and lowering operation of the cutting and transporting apparatus 3 for swinging and displacing the cutting and transporting apparatus 3 between the working height position and the non-working height position can be easily performed. It has become.
[0030]
As shown in FIGS. 1 to 4, the rear side of the cutting and conveying device 3 is in contact with the upper part of the feed chain 15 on the conveyance start end side from the gripping and conveying mechanism 14 of the grain and conveying device 12 toward the feed chain 15. A guide rod 22 that extends to the contact state and guides the stock side of the harvested cereal rice cake from the holding conveyance mechanism 14 to the conveyance start end portion of the feed chain 15, and the conveyance start end of the feed chain 15 from above the guide rod 22 A grain straw guide 24 provided with a pillow handling cover 23 covering the side is provided.
[0031]
The front portion of the grain stalk guide 24 is bent in a substantially U shape having a first connecting shaft portion 25A that is long in the left-right direction at the front end and a second connecting shaft portion 25B that is short in the left-right direction at the rear end. The supporting plate 26 that supports the guide rod 22 and the pillow handle cover 23 is relatively rotatable about the axis X3 of the second connecting rod portion 25B. It is connected to.
[0032]
The first connecting shaft portion 25A of the connecting rod 25 is connected to the cylindrical boss portion 27 mounted on the upper end portion of the vertical frame portion 8B extending from the lower left portion of the cutting frame 8 to the upper portion of the pulling device 10 in the left-right direction. The shaft is supported so as to be relatively rotatable about the axis X4 of the connecting shaft portion 25A and to be relatively slidable along the axis X4 of the first connecting shaft portion 25A.
[0033]
The pillow handling cover 23 has a two-part structure in which the front half part 23A and the rear half part 23B are connected via a hinge 28 so as to be able to bend and swing around a horizontal axis X5, and the front half part 23A is connected to a connecting rod 25. The latter part 23 </ b> B is coupled to the support plate 26.
[0034]
That is, the grain basket guide 24 is linked to the upward swing around the first axis X1 of the cutting and conveying apparatus 3, and the connecting basket 25 serving as the guide start end side and the front half 23A of the pillow handling cover 23 are The guide rod 22, the support plate 26, and the rear half 23B of the pillow handling cover 23, which are on the conveyance end side, bend and swing upward about the corresponding axes X4 and X5, and the cutting and conveying device. 3 is configured such that the guide start end side extends and swings downward around the corresponding axis X4, X5 with respect to the conveyance end side in conjunction with the downward swing around the first axis X1 of 3, When the cutting and conveying apparatus 3 is lowered and swung downward from a predetermined work height position, the front half 23A of the pillow handling cover 23 is received and supported by the support plate 26, and the front half 23A of the pillow handling cover 23 is supported. And the rear half 23B are straight in the front-rear direction. It is made as to maintain the tension that.
[0035]
On the other hand, from the boss portion 27 of the cutting and conveying device 3 and the first connecting shaft portion 25A of the culm guide 24, the chopping and conveying device 3 and the culm guide 24 can be slid relative to each other in the left-right direction and vertically. A connecting portion 30 that is connected so as to be able to swing relative to each other is formed. The connecting portion 30 includes a receiving member 29 provided on the first connecting shaft portion 25A and a bracket 31 that connects the boss portion 27 to the vertical frame portion 8B. In the meantime, a spring 32 that is interposed in a state of biasing the culm guide 24 toward the left outer side of the cutting and conveying device 3 is externally fitted.
[0036]
Further, the cutting and conveying apparatus 3 is provided with an inner wire 34A laid over a bracket 33 erected on the base frame 16 mounted on the traveling machine body 2 and a receiving tool 29 of the grain guide 24 and laterally guided by the sliding body 19. As the outer wire 34B is stretched over the bracket 35 of the main frame portion 8A and the bracket 31 of the vertical frame portion 8B, the outer wire 34B becomes the inner wire in accordance with the sliding displacement of the cutting and conveying device 3 in the left-right direction. A linking wire 34 is provided along 34 </ b> A that is displaced in the same direction as the displacement direction of the cutting and conveying device 3.
[0037]
Then, by this linking wire 34, the culm guide 24 is slid to the left with respect to the cutting and conveying device 3 by the bias of the spring 32, and a predetermined position (guide rod 22 in the left-right direction with respect to the feed chain 15). Is moved from the position at which the feed chain 15 comes into contact with the upper part of the conveyance start end side, or the sliding movement of the cutting and conveying apparatus 3 to the left with respect to the traveling machine body 2 causes the grain guide 24 to move to the cutting and conveying apparatus 3. At the same time, it can be slid to the left and prevented from deviating from a predetermined position with respect to the feed chain 15.
[0038]
Further, the spring 32 causes the culm guide 24 to slide and move to the right together with the cutting and conveying device 3 in accordance with the sliding displacement of the cutting and conveying device 3 to the right with respect to the traveling machine body 2, and the feed chain. 15 can be prevented from deviating from a predetermined position.
[0039]
That is, the connecting part 30, the spring 32, and the linking wire 34 are used to connect the harvesting and conveying apparatus 3 to the harvesting and conveying apparatus 3 while the harvesting and conveying apparatus 3 is connected to the harvesting and guiding apparatus 24 in the left-right direction. A maintenance mechanism 36 that allows sliding displacement and maintains the grain guide 24 at a predetermined position in the left-right direction with respect to the feed chain 15 is configured.
[0040]
From the above configuration, the culm guide 24 is equipped with the chopping and conveying device 3, regardless of whether the chopping and conveying device 3 is slidably displaced in the left-right direction or raised and lowered with respect to the traveling machine body 2. The guide rod 22 is kept in contact with the upper part of the feed chain 15 on the conveyance start end side, and the pillow handling cover 23 is maintained in a state of covering the conveyance start end side of the feed chain 15 from above the guide rod 22. As a result, during the harvesting and harvesting operation, the stocker-side delivery guide of the harvested cereal mash to the conveyance start end of the feed chain 15 from the holding and conveying mechanism 14 of the chopping and conveying apparatus 3 by the guide ridge 22 is performed well. In addition, at the time of pillow handling work, the pillow handle cover 23 can be used as a mounting table for temporarily placing the harvested cereal grains, and the harvested grain for the feed chain 15 can be used. Human supply is easily carried out, the result, so as thereby improving the workability and harvesting efficiency.
[Brief description of the drawings]
FIG. 1 is an overall side view of the combine. FIG. 2 is a cross-sectional plan view of the main part showing the operation structure of the cutting and conveying apparatus. FIG. 3 is a cross-sectional plan view of the main part showing the structure of the culm guide. Longitudinal side view of the main part showing the structure of the guide [Description of symbols]
2 traveling machine body 3 reaping and conveying device 4 threshing device 15 feed chain 22 guide rod 23 pillow handle cover 24 kernel rod guide 30 connecting portion 32 spring 34A inner wire 34B outer wire 34 linkage wire 36 maintenance mechanism

Claims (3)

The traveling machine body is connected to a cutting and conveying device that cuts and conveys the planted cereal and can be moved up and down and slidably displaced in the left and right direction. It is a combine equipped with a threshing device equipped with a feed chain to be received and transported on the left and right sides,
From the cutting and conveying device, the right and left sides of the cutting and conveying device on the feed chain side extend from the cutting and conveying device toward the feed chain so as to be in contact with the upper part of the feed chain on the conveying start end side. Equipped with a culm guide comprising a guide culm that guides the harvested cereal culm to the feed chain, and a pillow handle cover that covers the conveyance start end side of the feed chain from above the guide culm,
The culm guide is configured to allow relative sliding in the left-right direction of the chopping and conveying device, and the culm guide is moved by the swaying displacement in the left-right direction of the chopping and conveying device. The culm guide is placed at a predetermined position in the left-right direction with respect to the feed chain by providing linkage means for pushing and pulling the culm guide so as to slide and displace in a direction opposite to the sliding displacement direction of the transport device. A combine provided with a maintenance mechanism configured to maintain.   A connecting part that connects the harvesting and conveying device and the culm guide so as to be slidable relative to each other in the left-right direction, and the culm guide toward the outside of the left and right side portions of the chopping and conveying device. A spring interposed between the cutting and conveying device and the culm guide in an energized state, an inner wire is stretched over the traveling machine body and the culm guide at the predetermined position, and an outer wire is And a linkage wire supported by the cutting and conveying device in a state of being displaced along the inner wire in the same direction as that of the cutting and conveying device as the cutting and conveying device slides in the left-right direction. The combine according to claim 1.   In conjunction with the up-and-down swing of the cutting and conveying device, the guidance start end side of the cereal guide connected to the chopping and conveying device is relative to the guidance end side of the cereal guide that is located above the conveying start end of the feed chain. The combine according to claim 1 or 2, wherein the combine is configured to swing up and down.

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