JP2017057978A - Endless chain driving mechanism and mechanical parking device with it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an endless chain driving mechanism having a compact configuration of which maintenance work is easily carried out.SOLUTION: This invention relates to an endless chain driving mechanism for circulating and driving an endless chain by rotary chain guiding members arranged at spaced-apart circulating segments. One end side circulating segment includes at least two rotary chain guide members arranged to be spaced apart at a forward side and a rearward side of the endless chain in its circulating direction, and the other end side circulating segment includes at least one rotary chain guiding member, one end side circulating segment includes an oscillation member connecting each of the shafts of the rotary chain guiding member at one side circulating segment, a first shaft part of one rotary chain guiding member connected by the oscillation member is fixed in its position and the second shaft part of the other rotary chain guide member is constituted in such a manner that its position can be adjusted by an adjustment mechanism in respect to the other end side circulating segment of the endless chain around a center of the first shaft of which position is fixed.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a drive mechanism using an endless chain having a predetermined length and a mechanical parking apparatus including the drive mechanism.

  Conventionally, a drive mechanism using an endless chain is used as a mechanism for rotating a shaft at a position separated by an actuator or a mechanism for moving a machine part. Among such endless chain drive mechanisms, there is one that constantly applies tension using a tensioner or the like in order to eliminate sagging of the endless chain. In this case, a tensioner is generally used in which the free portion of the endless chain is pressed from the side with a spring such as a sprocket.

  For example, there is a mechanical parking device as a device using a chain drive mechanism. Hereinafter, a mechanical parking apparatus will be described as an example. Some mechanical parking devices use a chain drive mechanism to raise and lower a pallet that is a mechanical part. As a mechanical parking device that raises and lowers a pallet with a chain drive mechanism, for example, there is a multistage lifting and lowering parking device.

  In an endless chain drive mechanism in a multistage elevating parking system, an initial tension is applied by adjusting the inter-shaft distance of the sprocket that drives the endless chain, or the shaft of one sprocket is attached to the other sprocket shaft with a spring or the like. There are some that apply tension to the chain by urging away from the chain.

  As a prior art of this type, there is one provided with a tensioner having a roller for pressing the chain between these sprockets so as to keep the tension of the endless chain hung between the driving sprocket and the driven sprocket. Yes (see, for example, Patent Document 1).

  As another prior art, in a multistage parking apparatus, there is one in which a pallet is lifted or hung using a chain straight portion stretched between sprockets spaced vertically (for example, Patent Document 2). reference).

JP 2001-59567 A Japanese Patent Laid-Open No. 9-250253

  However, in Patent Document 1, a space for providing the tensioner between the sprockets is required, and time is required for maintenance depending on the length of the endless chain. In addition, a guide guide for adjusting the inter-shaft distance of the sprocket is usually required corresponding to the tensioner, and the portion of this guide also requires oiling, requiring a lot of time and labor for maintenance.

  Further, in Patent Document 2 described above, when a chain stretched between sprockets that are spaced apart from each other in the vertical direction is desired to increase the distance in order to dispose a member such as a beam or a column between opposing chain linear portions, the sprocket diameter is large. Therefore, the up and down overhang of the sprocket radius becomes large. Therefore, problems such as an increase in the amount of pit excavation occur. Moreover, there is no description about the configuration for maintaining the chain tension.

  Therefore, an object of the present invention is to provide an endless chain drive mechanism that is easy to maintain with a compact configuration, and a mechanical parking device including the endless chain drive mechanism.

  In order to achieve the above object, an endless chain drive mechanism according to the present invention is an endless chain drive mechanism in which an endless chain is driven to turn by a rotary chain guide member disposed in a separated turning part, and the one end side turning part Comprises at least two rotary chain guide members arranged apart in the front-rear direction of the swivel direction of the endless chain, and the other-end-side swivel portion comprises at least one rotary chain guide member. The swivel portion has a swing member that connects each shaft portion of the rotary chain guide member of the one end side swing portion, and the first swivel member of the one rotary chain guide member that is connected by the swing member. The first shaft portion is fixed in position, and the second shaft portion of the other rotary chain guide member is moved around the endless chain around the fixed first shaft portion. It is adjustable in position constituted by a control mechanism with respect to the other end the swivel part of the emissions. The “rotary chain guide member” in this specification and claims includes drive and driven “sprockets” and “rollers”.

  With this configuration, at least one rotary chain guide member arranged at one end side turning portion of the endless chain so as to be separated from the front and rear in the turning direction has the first shaft portion of one rotary chain guide member as a center. Since the second shaft portion of the rotary chain guide member is configured to be swung by the swinging member, a configuration for applying an appropriate tension to the endless chain can be configured compactly and can be easily maintained. In addition, the pitch of the endless chain can be increased without increasing the distance between the revolving parts separated by increasing the distance between the axes of the rotary chain guide member in the front-rear direction. The amount of protrusion in the vertical direction at the portion can be suppressed.

  The adjustment mechanism may include an urging member that urges the second shaft portion in a direction away from the other end side turning portion of the endless chain, with the first shaft portion as a center. If comprised in this way, the stable tension | tensile_strength can always be given to an endless chain with the urging | biasing force of an urging | biasing member.

  The urging member may be constituted by a spring member. If comprised in this way, since a big urging | biasing force can be made to act with a spring member, a urging | biasing member can be comprised compactly, and it can be set as a space-saving structure of an adjustment mechanism, and a structure with a maintenance-saving by a simple structure. .

  The urging member may be composed of a weight. With this configuration, it is possible to configure an adjustment mechanism that always applies the urging force with the weight of the weight without being affected by the position change of the swinging member due to the extension of the endless chain.

  In addition, the endless chain is configured such that one side swiveling between the rotary chain guide members in the swivel section spaced apart is configured as a working side for moving up and down the structure, and the other side is configured as a non-working side, and the shaft is fixed in position. The part may be arranged on the work side. The “working side” in the document of this specification and the claims is the side that performs the work of the endless chain that raises and lowers the structure and the like, and the “non-working side” simply refers to the side that the endless chain moves up and down. Say. If comprised in this way, there will be no change in distance between the turning parts spaced apart on the working side of the endless chain, and the swing member can be moved on the non-working side to maintain the tension of the endless chain.

  Further, a detection device for detecting a swing position of the swing member may be further provided, and a set elongation amount of the endless chain may be detected based on the swing position. With this configuration, it is possible to automatically detect that the amount of elongation of the endless chain has reached the set value.

  In addition, at least one of the rotary chain guide members is a drive sprocket, and further includes a drive unit that drives the drive sprocket, and transmits or drives the information of the endless chain based on detection information of the detection device. A control device for stopping the machine may be provided. If configured in this way, based on the detection information of the detection device, when the extension amount of the endless chain reaches a set value or when a large load is applied to the endless chain, this is displayed on a monitor or the like. A warning sound can be emitted or the operation can be automatically stopped.

  On the other hand, the mechanical parking device according to the present invention is a mechanical parking device including any one of the endless chain drive mechanisms, wherein the turning unit is separated from the upper part and the lower part, and the position is adjusted by the adjustment mechanism. The rotating chain guide member connected by the swinging member is provided in the lower swivel portion so as to be possible.

  With this configuration, a configuration in which an appropriate tension is applied to the endless chain at the one end side turning portion of the endless chain can be configured in a compact manner. Moreover, maintenance can be easily performed at the one-end side turning portion. In addition, the pitch of the endless chain can be increased without increasing the distance between the revolving parts separated by increasing the distance between the axes of the rotary chain guide member in the front-rear direction. The amount of protrusion in the vertical direction at the portion can be suppressed.

  According to the present invention, it is possible to form a compact configuration that applies an appropriate tension to the endless chain, and it is possible to easily perform maintenance at the one end side turning portion.

FIG. 1 is a front view showing an example of a mechanical parking apparatus using an endless chain drive mechanism according to the present invention. FIG. 2 is a perspective view showing an outline of the endless chain drive mechanism according to the present invention. FIG. 3 is a perspective view showing a pallet that is lifted and lowered by the endless chain drive mechanism shown in FIG. FIG. 4 is a side view showing a part of the endless chain drive mechanism shown in FIG. FIG. 5 is an enlarged view showing a lower turning portion in the endless chain drive mechanism according to the first embodiment shown in FIG. FIG. 6 is an enlarged view showing a lower turning portion in the endless chain drive mechanism according to the second embodiment of the present invention. FIG. 7 is an enlarged view showing a lower turning portion in the endless chain drive mechanism according to the third embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiment, an example will be described in which an endless chain drive mechanism is used in a four-stage, five-row mechanical parking apparatus 1 that raises and lowers a pallet in the vertical direction. In this embodiment, an example in which a drive sprocket and a driven roller are provided in the upper part and two driven rollers are provided in the lower part as the rotary chain guide member will be described. The concept of the front / rear / left / right direction in the document of this specification and claims shall be the same as the concept of the front / rear / left / right direction in the state facing the mechanical parking device 1 shown in FIG.

  As shown in FIG. 1, this mechanical parking apparatus 1 is a ground-in type that is provided on the ground G, from the first stage 10 at the lowest level to the second stage 11, the third stage 12, and the uppermost level 4. Stage 13 and 4 rows × 5 columns, from the first column 20 of the left end column to the second column 21, the third column 22, the fourth column 23, and the fifth column 24 of the right end column, storing 20 locations. A space 40 is provided. One storage space 40 is a vacant space 41, and the number of pallets 30 for storing the automobile V is 19 which is one less, and 19 automobiles V can be stored. In the state shown in the figure, the storage space 40 in the fourth row 13 which is the uppermost row of the fifth row 24 which is the right end row is one empty space 41. A pallet 30 is arranged in each of the other storage spaces 40.

  This mechanical parking device 1 includes a column member 2 provided vertically at the front and rear positions, a front and rear beam member 3 that connects the column member 2 in the front and rear direction, and a left and right beam member (not shown) that connects the left and right direction. The provided frame 4 is provided. In the mechanical parking device 1 of this embodiment, the fifth row 24 that is the rightmost row of the first step 10 on the ground floor that is the lowest step is the loading / unloading unit 42. The entrance / exit section 42 is provided with a front movable fence 43 that can be opened and closed.

  In the mechanical parking apparatus 1 of this embodiment, each pallet 30 can be traversed individually as indicated by an arrow W in the first stage 10 which is the lowest stage and the fourth stage 13 which is the uppermost stage. In each of the columns 20 to 24, all the pallets 30 in the column are moved together (simultaneously) between the first level 10 which is the lowest level and the fourth level 13 which is the highest level by the arrow H. It can be moved up and down as shown by. And the endless chain drive mechanism 50 which raises / lowers this pallet 30 is provided in the position of the column material 2 before and behind provided in the said frame 4. The mechanical parking device 1 is driven and controlled by a control device 5.

  FIG. 2 is a perspective view showing an outline of the endless chain drive mechanism 50, and FIG. 3 is a perspective view of the pallet 30 as a structure that is lifted and lowered by the endless chain drive mechanism 50. As shown in FIG. As shown in FIG. 2, the endless chain drive mechanism 50 of this embodiment is provided at the front and rear, left and right positions of each row 20 to 24 (FIG. 1), and the upper swivel portion 53 that is spaced apart from the top and bottom. And an endless chain 51 that is driven to turn between the lower turning portion 56 and the lower turning portion 56. On the other end side turning part 53 at the upper part, two of a driving sprocket 54 and a driven roller 55 which are rotary chain guide members are arranged. The drive sprocket 54 and the driven roller 55 are disposed so as to be separated from each other in the front-rear direction of the endless chain 51 (left and right in this figure), and the drive sprocket 54 is disposed above. Further, two driven rollers 57 and 58 serving as a rotary chain guide member are disposed in the lower end side turning portion 56 of the lower portion. These driven rollers 57 and 58 are arranged away from each other in the front-rear direction (left and right in this figure) in the turning direction of the endless chain 51. The endless chain 51 is swiveled by the driving machine 6 that rotationally drives the driving sprocket 54.

  The endless chain 51 is provided with locking hooks 52 at predetermined intervals. The locking hooks 52 are provided at intervals suitable for the interval from the first stage 10 to the fourth stage 13. On the other hand, as shown in FIG. 3, locking members 31 are provided at the four corners of the front, rear, left and right ends of the lower surface of the pallet 30. The locking members 52 provided at the four corners of the pallet 30 are locked by the locking hooks 52 provided on the endless chain 51, and the pallet 30 is moved up and down by turning the endless chain 51. .

  The endless chains 51 provided at the front, rear, left and right positions are synchronously driven so as to raise and lower the pallet 30 in a horizontal state. The synchronous driving of the endless chain 51 may be mechanically coupled and synchronized, or the driving machine 6 may be electrically synchronized.

  4 is a side view showing a part of the endless chain drive mechanism 50 shown in FIG. 2, and FIG. 5 is an enlarged view showing a lower turning portion of the endless chain drive mechanism 50 according to the first embodiment shown in FIG. FIG. As described above, the endless chain 51 is hung on the drive sprocket 54 and the driven roller 55 arranged in the upper turning section 53 and the driven roller 57 and the driven roller 58 arranged in the lower turning section 56. . In this example, the right side (one side) of the illustrated endless chain 51 is the working side F, and the locking hook 52 provided on the endless chain 51 faces upward. On the left (one side) non-working side R shown in the figure, the locking hook 52 faces downward.

  As shown in FIG. 5, a predetermined tension is applied to the endless chain 51 by adjusting the position of the driven roller 57 with respect to the drive sprocket 54 provided in the upper turning portion 53. An adjustment mechanism 70 is provided.

  The second shaft portion 59 of the driven roller 57 and the first shaft portion 60 of the driven roller 58 provided in the turning portion 56 are connected by a swing member (link plate) 61. The first shaft portion 60 on the right side is a fixed shaft that is fixed to the frame member 62, the second shaft portion 59 on the left side is a swing shaft, and the shaft portions 59, 60 are respectively connected to the swing member 61. Is freely rotatable. The first shaft portion 60 on the fixed side is supported by the frame member 62 so as not to move at a fixed position. The second shaft portion 59 on the swing side can swing by swinging the swing member 61 in the vertical direction around the first shaft portion 60.

  The swivel portion 56 is adjusted so that the position of the second shaft portion 59 of the driven roller 57 in the lower swivel portion 56 can be adjusted downward relative to the upper swivel portion 53 (FIG. 4) of the endless chain 51. A mechanism 70 is provided. In this embodiment, the spring member 71 is a biasing member that biases the swinging member 61 downward relative to the frame member 62 so as to bias the position close to the second shaft portion 59 of the swinging member 61 downward. Is provided. The frame member 62 is provided with a support frame member 63 above the position of the turning portion 56, and a support plate 66 is provided at a predetermined position of the support frame member 63. The shaft member 72 is inserted into the through hole 64 provided in the support plate 66 and the through hole 65 provided in the horizontal plate 67 of the frame member 62. A lower end of the shaft member 72 extends downward from the through hole 65 of the frame member 62 and is connected to the swing member 61 by a pin 73. The shaft member 72 is inserted with a spring member 71 (in this embodiment, a compression spring) that is an urging member. The spring member 71 has its upper end in contact with the support frame member 63, and the lower end is positioned by a lock nut 75 screwed into a screw portion 74 provided on the shaft member 72. By adjusting the position of the lock nut 75 upward, the amount of compression of the spring member 71 is increased, and a large biasing force can be applied to the swing member 61 by the shaft member 72. By adjusting the position of the lock nut 75 downward, the compression amount of the spring member 71 is reduced, and a small biasing force can be applied to the swing member 61 by the shaft member 72.

  Further, a regulating nut 76 that determines a position where the shaft member 72 moves downward is provided below the position of the lock nut 75 provided on the shaft member 72 by a predetermined amount. In the illustrated regulation nut 76, the position in contact with the frame member 62 is the position where the rocking member 61 is swung most downward. The shaft member 72 is provided with a limiting plate 77 that contacts the frame member 62 and restricts the ascent of the shaft member 72.

  In this example, as shown in the drawing, the initial set length L0 is used, and the spring length L1 when the wear is extended. The initial set length L0 here is, for example, the no-load state of the endless chain 51. The spring length L1 at the time of wear elongation may be in a state including elastic elongation at the time of maximum load of the endless chain 51, for example. The same applies to the following description. The state shown in the figure shows a state where the initial set length L0 has changed to the spring length L1 at the time of wear elongation due to wear elongation of the endless chain 51. In this state, since the tension of the endless chain 51 applied by the spring member 71 is lowered, the initial set length L0 is adjusted by adjusting the position of the lock nut 75.

  By such an adjustment mechanism 70, the endless chain 51 is urged to be pushed outward by the driven roller 57 on the swing side, and an appropriate tension is applied by the spring member 71. That is, by urging the swing member 61 with the spring member 71, the second shaft portion 59 of the driven roller 57 is centered on the first shaft portion 60 on the fixed side via the swing member 61. The one end side swivel portion 56 (lower portion) is urged from the inside toward the outside with respect to the other end side swivel portion 53 (upper portion) so that an appropriate tension is applied to the endless chain 51. . Since the movement of applying tension to the endless chain 51 is a circular movement of the swinging member 61 around the first shaft portion 60, the tension according to the operation of the endless chain 51 can be stably applied.

  In addition, since the tension is maintained by the movement of the swing member 61 on the non-working side R of the endless chain 51, the one end side turning portion 56 and the other end side turning portion 53 that are separated from each other on the working side F of the endless chain 51. There is no change in the distance between them, and the tension of the endless chain 51 can be maintained without affecting the elevation of the pallet 30.

  In addition, since the adjusting mechanism 70 is provided at the position of the driven rollers 57 and 58, the oscillating member 61 and the like can be simultaneously lubricated when the driven rollers 57 and 58 are maintained (at the time of refueling). Can be reduced.

  In addition, by arranging the two driven rollers 57 and 58 arranged at the lower part in the front-rear direction, the driven rollers 57 and 58 in the turning portion 56 can be made small in diameter. Thereby, in the turning part 56, in the state which has arrange | positioned the 2nd axial part 59 and the 1st axial part 60 in a preferable position, the amount of protrusions from these axial parts 59 and 60 can be suppressed to the minimum. Therefore, in the mechanical parking apparatus 1, the amount of excavation of the ground can be reduced in order to arrange the second shaft portion 59 of the lower driven roller 57 and the first shaft portion 60 of the driven roller 58 at appropriate positions. It becomes possible.

  In addition, the endless chain drive mechanism 50 has a configuration in which the shaft portion 59 is indirectly biased by biasing the swinging member 61 instead of the shaft portion 59 of the driven roller 57 to be swung. Can be determined relatively freely. Therefore, it is possible to change the tension of the endless chain 51 by setting the urging position. Instead of indirectly biasing the swinging member 61, the swinging second shaft portion 59 may be directly biased.

  FIG. 6 is an enlarged view showing a lower turning portion in the endless chain drive mechanism 80 according to the second embodiment. In addition, the same code | symbol is attached | subjected to the structure same as the endless chain drive mechanism 50 of the said 1st Embodiment, and the description is abbreviate | omitted.

  As shown in the figure, the endless chain drive mechanism 80 of the second embodiment is provided with a detection device 81 that detects that the endless chain 51 has extended and the swing position of the swing member 61 has moved to a predetermined position. ing. In the detection device 81 of this embodiment, a detection switch dog 82 (for example, a plate material) is attached to the position of the lock nut 75, and a limit switch 83 is provided on the frame member 62 on the fixed side.

  According to this detection device 81, it can be detected by the limit switch 83 that the endless chain 51 is extended and the detection switch dog 82 is lowered. Therefore, it is possible to detect that the adjustment time of the spring member 71 is reached by detecting that the endless chain 51 has reached the set elongation amount by the extension amount of the spring member 71. The extension amount of the endless chain 51 can be obtained by calculation based on the result of obtaining the swing angle of the swing member 61 from the movement amount of the shaft member 72.

  By detecting the limit switch 83, it is detected that the extension amount of the endless chain 51 has reached a set value or a large load is applied to the endless chain 51, and this is displayed on a monitor or a warning. A sound can be emitted or the operation can be automatically stopped.

  Moreover, by providing the detection device 81 at the expansion / contraction portion of the spring member 71, the additional parts for the detection device 81 are minimized, and the configuration required for the detection device 81 is compactly arranged in the lower turning portion 56. can do. Thereby, even when water accumulates in the lower part of the mechanical parking device 1 due to heavy rain or the like, the detection device 81 can be minimized from being damaged by water.

  In addition, the timing at which the detection device 81 detects that the tension due to the spring member 71 has decreased due to the wear elongation of the endless chain 51 can be made constant at all times. Thereby, the detection timing of the limit switch 83 can be made constant by detecting the extension of the endless chain 51 by the detection device 81 and adjusting the compression amount of the spring member 71 to the initial value.

  If the detection device 81 is disposed on the swing member 61, the configuration around the spring member 71 can be reduced, and the adjustment work of the spring member 71 can be facilitated.

  In the second embodiment, an indirect biasing example in which the driven roller 57 is biased outwardly by the spring member 71 via the swinging member 61 has been shown. However, the shaft of the driven roller 57 by the spring member 71 is shown. The portion 59 may be directly urged.

  FIG. 7 is an enlarged view showing a lower turning portion in the endless chain drive mechanism 90 according to the third embodiment. In the endless chain drive mechanism 90 of the third embodiment, the spring member 71 as the biasing member in the first embodiment is a weight 91. Since the other configuration is the same as that of the first embodiment, the same reference numeral is given to the same configuration as the endless chain drive mechanism 50 of the first embodiment, and the description thereof is omitted.

  In this embodiment, a weight 91 is disposed above the support plate 66 inside the support frame member 63. The weight 91 is provided so as to move up and down the support frame member 63 as a guide. The lower portion of the weight 91 is connected to the shaft member 72. Therefore, the swing member 61 is urged by the weight 91 via the shaft member 72. According to this embodiment, a space for arranging the weight 91 for applying a predetermined urging force is required. However, by using the weight 91, the endless chain 51 extends and the position of the swinging member 61 is increased. Even if it changes, the urging force can always be applied by the weight of the weight 91. Therefore, the tension can always be kept constant regardless of the elongation of the endless chain 51. In addition, since the tension is always kept constant, there is no need to adjust the position of the weight 91 even when the endless chain 51 is extended, and maintenance becomes easier.

  As described above, according to the endless chain drive mechanism 50, the one end side turning portion 56 of the endless chain 51 is centered on the first shaft portion 60 of the one driven roller 58 that is spaced apart from the front and rear in the turning direction. Since the second shaft portion 59 of the other driven roller 57 is swung by the swing member 61, the maintenance of the configuration in which the swing-side driven roller 57 is swung to give an appropriate tension to the endless chain 51 is swiveled at one end. This is easily possible with the part 56. In addition, it is possible to form a compact configuration that applies an appropriate tension to the endless chain 51.

  In addition, by increasing the distance between the axes of the driven rollers 57 and 58 in the front-rear direction, the pitch in the front-rear direction of the endless chain 51 can be increased without changing the distance between the upper and lower turning parts 53 and 56. It is possible to suppress the amount of protrusion in the vertical direction at the revolving portion of the chain 51.

  In addition, as in the mechanical parking apparatus 1 described above, in the configuration in which the locking member 31 of the pallet 30 is locked and lifted by the locking hook 52 provided on the endless chain 51, an appropriate tension is applied to the endless chain 51. It is always applied and stable engagement is possible.

  In the above-described embodiment, the endless chain drive mechanism 50 used in the mechanical parking device 1 has been described as an example. However, the mechanical parking device 1 can also be used in industrial robots, warehouses, and the like. The endless chain drive mechanism 50 is not limited to this.

  In the above-described embodiment, the example in which the endless chain 51 is pushed from the inside to the outside via the swing member 61 by the spring member 71 or the weight 91 has been described. The endless chain 51 may be urged by pulling the moving member 61 from the outside, and the arrangement of the urging members is not limited to the above embodiment.

  Furthermore, in the above-described embodiment, the example in which the drive sprocket 54 is disposed on the upper side has been described. However, the drive sprocket 54 may be disposed on the lower side, and the drive sprocket 54, the driven rollers 55, 57, and 58 (driven sprockets) The arrangement and the number are not limited to the above embodiment.

  In the above-described embodiment, an example in which two rotary chain guide members (a driving sprocket 54 and a driven roller 55) are provided in the other end side turning portion 53 is shown. However, space, speed, and driving force (generally, the smaller the diameter, the lower the speed. , High traction force), etc., one or three or more chain guide members may be used.

  Furthermore, the adjustment mechanism 70 is not limited to the one having the urging mechanism (the spring member 71 and the weight 91) shown in the above embodiment, and may be one that can adjust the position with a jack bolt, a screw, a liner, or the like.

  Moreover, the above-described embodiment shows an example, and various modifications can be made without departing from the gist of the present invention, and the present invention is not limited to the above-described embodiment.

1 Mechanical parking device
5 Control device
6 Driving machine 30 Pallet (structure)
31 Locking member 50 Endless chain drive mechanism 51 Endless chain 52 Locking hook 53 Other end side turning part (upper part)
54 Drive sprocket (rotary chain guide member)
55 Follower roller (rotary chain guide member)
56 One end side turning part (lower part)
57 Driven roller (rotary chain guide member: swing side)
58 Follower roller (Rotary chain guide member: fixed side)
59 Second shaft (oscillating side)
60 First shaft (fixed side)
61 Swing member (link plate)
62 Frame member 63 Fixing member 64, 65 Through hole 70 Adjustment mechanism 71 Spring member (biasing member)
72 Shaft member 73 Pin 75 Lock nut 76 Restriction nut 77 Restriction plate 80 Endless chain drive mechanism 81 Detector 82 Detection switch dog 83 Limit switch 90 Endless chain drive mechanism 91 Weight (biasing member)
F Work side
R Non-working side
V car
H Arrow (up and down)
W Arrow (transverse)

Claims (8)

An endless chain drive mechanism that drives an endless chain to turn by a rotary chain guide member arranged in a separated turning portion,
The one end side swivel portion includes at least two rotary chain guide members arranged apart from each other in the swivel direction of the endless chain,
The other end side turning portion includes at least one of the rotary chain guide members,
The one end side swivel portion includes a swing member that connects each shaft portion of the rotary chain guide member of the one end side swivel portion,
The first shaft portion of one of the rotary chain guide members connected by the swing member is fixed in position, and the second shaft portion of the other rotary chain guide member is fixed in position. An endless chain drive mechanism characterized in that the position can be adjusted by an adjustment mechanism with respect to the other end side turning portion of the endless chain.   2. The adjustment mechanism according to claim 1, further comprising an urging member that urges the second shaft portion in a direction away from the other end side turning portion of the endless chain around the first shaft portion. Endless chain drive mechanism.   The endless chain drive mechanism according to claim 2, wherein the biasing member is configured by a spring member.   The endless chain drive mechanism according to claim 2, wherein the urging member includes a weight. The endless chain is configured such that one side swiveling between the rotary chain guide members in the revolving section spaced apart is a working side for raising and lowering the structure, and the other side is a non-working side,
The endless chain drive mechanism according to any one of claims 1 to 4, wherein the shaft portion fixed in position is disposed on the work side. A detection device for detecting a swing position of the swing member;
The endless chain drive mechanism according to any one of claims 1 to 5, wherein the endless chain drive mechanism is configured to detect a set elongation amount of the endless chain based on the swing position. At least one of the rotary chain guide members is a drive sprocket;
A driving machine for driving the driving sprocket;
The endless chain drive mechanism according to claim 6, further comprising a control device that transmits information on the endless chain or stops the drive unit based on detection information of the detection device. A mechanical parking device comprising the endless chain drive mechanism according to any one of claims 1 to 7,
The swivel part is provided at an upper part and a lower part,
A mechanical parking apparatus having the rotary chain guide member connected to the swing member so as to be position-adjustable by the adjusting mechanism in the lower turning portion.

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