JP6005982B2 - Polishing and lifting equipment - Google Patents

Description

  The present invention relates to a polishing and lifting device that is provided in an island facility of a pachinko gaming machine and wipes off the dirt on the surface of a game ball and lifts the game ball.

  The pachinko machine island facility is installed in the pachinko shop hall, and a plurality of pachinko machines are arranged side by side, and power can be supplied to these pachinko machines and supply and recovery of game balls can be performed. It is configured as follows. In such an island facility of a pachinko gaming machine, usually, an outrail that collects game balls discharged from the pachinko game ball, an in-island tank that stores game balls collected from the outrail, and an island tank are disposed on the island. The upper surface of the island that can store game balls, the transporter that transports the game balls stored in the tank in the island to the upper tank, and the outer surface of the game balls that circulate in the island facilities are polished to clean the surface. A game ball polishing apparatus having a polishing cloth for wiping off is provided.

However, as disclosed in Patent Document 1, for example, a block-shaped lifting conduit having a plurality of flow paths formed on the game ball discharge side of the game ball polishing apparatus is provided upright, and By adopting a configuration in which the game ball that has flowed out of the transport surface is lifted by the lifting pipeline, a polishing and lifting apparatus that does not require a separate lifting machine has been proposed. Such conventional polishing pumped device, to a game ball that has flowed into between the conveying surface of the conveyor belt and the polishing pad, pumped conduit by the rotation of the conveyor belt while wiping surface contamination at the polishing cloth It was supposed that the lifting force in was given.

JP 2011-147822 A

  However, in the above prior art, when removing the lifting pipeline at the time of maintenance of the polishing and lifting apparatus or when dealing with ball clogging, the game ball falls from the lower end of the lifting pipeline and scatters around. There was a risk of it. In particular, in the case of a relatively long lifting pipeline extending in the vertical direction, there are a large number of game balls inside, so it may be difficult to receive a game ball dropped from the lower end. . Further, there is a possibility that the game ball in the lifting pipeline will flow backward in a state where the conveyor belt is stopped, and countermeasures are also required.

  The present invention has been made in view of such circumstances, and can prevent a game ball inside the lifting pipeline from falling when the lifting pipeline is removed, and a conveyor belt. An object of the present invention is to provide a polishing / lifting device capable of avoiding a backflow of a game ball in a pumping pipe line during a stop of the machine.

According to the first aspect of the present invention, an endless transport belt that is suspended between at least a pair of pulleys and is rotatable and formed with a transport surface for a game ball, and a position facing the transport surface of the transport belt A polishing cloth for sandwiching a game ball that has flowed in between the transfer surface and wiping away dirt on the surface, and a lifting pipe for lifting the game ball that has flowed out of the transfer surface of the transfer belt ; and a road, the pumped line to the inflow game ball, while wiping the surface dirt at the polishing cloth by the rotation of the conveyor belt between the polishing cloth and the conveying surface of the conveyor belt fried feed force a polishing pumped device applied in the lift to the lower end of Okukanro, and shall have pumped tube roadside backflow preventing means for preventing the backflow of game balls are disposed And distribute game balls from the conveyor belt to the lifting pipeline. A lifting member in which a flow path is formed, and a flow path that is disposed at a lower end portion of the lifting pipe and connects the lifting member to connect the flow path of the lifting member and the lifting pipe. And a connecting pipe and a lifting member are positioned on the connecting member and the lifting member at the time of connection. Positioning means capable of communicating the flow path of the connecting member and the flow path of the lifting member is provided .

  According to the first aspect of the present invention, when the lifting pipeline is removed, the lifting pipeline side backflow prevention means for preventing the backflow of the game ball is disposed at the lower end portion of the lifting pipeline. It is possible to prevent the game balls inside the lifting pipeline from falling and to prevent the gaming balls in the lifting pipeline from flowing backward while the conveyor belt is stopped. .

In addition , a lifting member having a flow path for circulating game balls from the conveyor belt to the lifting pipeline is formed, and a lower end portion of the lifting pipeline is connected to the lifting member to connect the lifting member. Since the connecting member for connecting the flow path of the feeding member and the lifting pipe line is connected, and the feeding pipe side backflow prevention means is disposed on the connecting member, the connecting member is provided with the feeding pipe side backflow prevention means. The function to hold | maintain and the function to connect with the lifting member and to make the flow path of the said lifting member and the lifting pipe line communicate can be provided.

Overall view showing an island facility to which a polishing and lifting apparatus according to an embodiment of the present invention is applied. Sectional view showing the polishing and lifting device Sectional drawing which shows the polishing lifting device (with the lifting pipeline removed) The enlarged view which shows the effect | action of the main body side backflow prevention means in the grinding | polishing lifting apparatus A plan view showing a lifting member in the polishing lifting apparatus Side view and front view showing connecting member and pumping conduit in the polishing pump The enlarged view which shows the backflow prevention means by the side of the pumping pipe | tube side arrange | positioned in the connection member in the grinding | polishing pumping apparatus Schematic showing the pumping pipeline in the polishing pump

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
As shown in FIG. 1, the island facility of the pachinko gaming machine applied to the present embodiment is an island-shaped facility in which a plurality of pachinko gaming machines 2 are installed in parallel while being installed in a game shop. The island facility 1 is capable of supplying electric power to each pachinko gaming machine 2 and having a flow path (rail or the like) for supplying or collecting game balls to each pachinko gaming machine 2.

  The pachinko gaming machine 2 has a front frame to which a glass plate is attached. The pachinko gaming machine 2 is configured so that a player can see the game board from the glass plate. Various accessories such as a display means, a start opening and a big winning opening are arranged. Then, by rotating the handle, the game ball is fired on the game board, and is configured to reach a predetermined winning opening or reach a bottom out hole.

  The island facility 1 includes power supply means (not shown) that can supply power to the pachinko gaming machine 2, and the island tank 7, the outrail 8, and the polishing and lifting device 9 are installed inside. Yes. Furthermore, the island facility 1 includes an island tank 3 disposed on the island, supply tanks 4a and 4b extending from the island tank 3 in the horizontal direction in the figure, and overflow tanks extending in the same direction. 5a and 5b.

  The outrail 8 is composed of a flow path for collecting game balls discharged from the pachinko gaming machine 2, and the game balls discharged from each pachinko gaming machine 2 are passed through the outrail 8 through the island tank 7 and polished. It reaches the lifting device 9. The in-island tank 7 is for storing the game balls collected by the outrail 8 and is fixed to the lower part of the island facility 1. The island tank 3 is disposed on the upper surface (on the island) of the island facility 1 and stores game balls to be supplied to each pachinko gaming machine 2. The island tank 3 is connected to the upper end of the lifting line 18 in the polishing / lifting device 9, and the game balls polished by the polishing / lifting device 9 are directed upward via the lifting line 18. It can be pumped up to the tank 3 on the island by circulating towards the island.

  The replenishing rods 4a and 4b are extended while being inclined downward from both side surfaces of the island tank 3 toward the island ends (the left end and the right end of the island facility 1 in FIG. 1). Are made up of flow paths that can be replenished to each pachinko gaming machine 2. The overflow rods 5a and 5b are formed of a flow path that allows the game balls overflowed from the replenishment rods 4a and 4b to flow down and fall into the island tank 7 via the bellows tubes 6a and 6b.

  The game balls in the island tank 3 are then supplied to the pachinko gaming machines 2 through the supply rods 4 a and 4 b and discharged from the pachinko gaming machine 2. To. Thereafter, the game ball that has reached the inside of the in-island tank 7 is polished by the polishing and lifting device 9, and then is again transferred to the on-island tank 3 through the transfer pipe 18, and is supplied from the on-island tank 3 to the replenishment rod 4a. 4b, it will be replenished to each pachinko gaming machine 2. Thus, the game balls are supposed to circulate in the island facility 1.

  Here, the polishing and lifting apparatus 9 according to the present embodiment receives the game balls collected from each pachinko gaming machine 2 via the outrail 8, and after polishing the surface of the game balls and wiping off the dirt, As shown in FIGS. 2 to 8, the conveyor belt 10, the polishing cloth 11, the receiving member 13, the main body side backflow preventing means 14, the lifting member 16, It is provided with a lifting pipeline 18 and a lifting pipeline side backflow prevention means 19. In addition, the code | symbol F in the figure has shown the flame | frame which comprises the housing | casing in the grinding | polishing lifting apparatus 9. FIG.

  As shown in FIGS. 2 and 3, the transport belt 10 is made of an endless belt material that is suspended by pulleys R <b> 1 and R <b> 2 and is rotatable between the pulleys (R <b> 1 and R <b> 2). The pulley R <b> 2 is a driving pulley connected to the output shaft of the motor M, and the pulley R <b> 1 is a driven pulley that is driven by the rotation of the transport belt 10. In addition to the pulleys R1 and R2, the transport belt 10 according to the present embodiment is also suspended on a free pulley R3 and a tension pulley R4.

  The free pulley R3 can apply a predetermined tension (tension) to the conveyor belt 10 with the tension pulley R4. Further, the tension pulley R4 can press a portion of the transport belt 10 between the pulley R2 and the free pulley R3, and is configured to apply tension to the transport belt 10 according to the pressing dimension. . And if the motor M as a drive source is driven, the conveyance belt 10 will be comprised between the pulleys R1 and R2.

  Further, a pressing member 12 is disposed at a portion facing the conveying surface of the conveying belt 10. The pressing member 12 is composed of a substantially plate-like member connected to the frame F, and is urged toward the conveyance surface of the conveyance belt 10 by an urging means 12 a such as a spring, and the conveyance surface of the conveyance belt 10. A polishing cloth 11 can be laid on the surface opposite to. The dimension between the conveyance surface of the conveyance belt 10 and the polishing surface of the polishing pad 11 is set slightly smaller than the outer diameter of the game ball, and the conveyance surface of the conveyance belt 10 and the polishing surface of the polishing cloth 11 Can be used to hold a game ball.

  Thus, the game balls that have flowed in between the transport surface of the transport belt 10 and the polishing pad 11 are sandwiched between the transport surface of the transport belt 10 and the polishing pad 11, and the transport belt 10 is connected to the pulleys R1 and R2. By rotating between them, the frictional resistance generated between the conveying surface of the conveying belt 10 and the polishing surface of the polishing pad 11 flows upward (to the pulley R2 side) and moves toward the rotating direction of the conveying belt 10. In the process of being conveyed while being held between the conveying surface of the conveying belt 10 and the polishing cloth 11, the surface (outer peripheral surface) is rubbed and polished by the polishing surface of the polishing cloth 11, and the surface becomes dirty. Will be wiped off.

  In addition, a receiving member 13 that can receive a game ball circulating through the island facility 1 (specifically, a game ball flowing down through the outrail 8) is disposed below the pulley R2 in the polishing and lifting apparatus 9. Has been. The receiving member 13 is formed with a plurality of grooves 13a through which game balls can pass, and the game balls collected by the outrail 8 are conveyed through the receiving member 13 to the transport surface of the transport belt 10 and the polishing cloth 11. It is comprised so that it can guide one by one between these grinding | polishing surfaces.

  The polishing cloth 11 according to the present embodiment is made of a long cloth (such as a non-woven cloth whose surface can polish the outer peripheral surface of a game ball), and one end side (unused side) is a rotatable roller part. While being wound by R6, the other end side (used side) is wound by a roller portion R5 connected to a drive source such as a motor (not shown). A portion of the polishing pad 11 between the roller portion R6 and the roller portion R5 is laid on the pressing member 12 so as to face the conveyance surface of the conveyance belt 10.

  When a driving source (not shown) is driven to rotate the roller portion R5, the polishing cloth 11 is wound around the roller portion R5, and the unused polishing cloth 11 is fed out from the roller portion R6. ing. As a result, when the portion of the polishing cloth 11 facing the transport surface of the transport belt 10 is consumed due to long-term use, the unused portion is made to face the transport surface of the transport belt 10 by rotating the roller portion R5. The game ball can be polished.

  The lifting member 16 is disposed on the terminal end side of the conveyor belt 10 and is formed of a member formed with a flow path 16a through which a game ball can be circulated, and flows into the flow path 16a through the main body side backflow prevention means 14. It is comprised so that a game ball can be distribute | circulated to upper direction. More specifically, as shown in FIG. 5, the lifting member 16 has a plurality of (six in the present embodiment) flow paths 16a formed in the width direction in the vertical direction. The path 16 a is in an open state on the upper surface of the lifting member 16. In addition, the code | symbol 16b in the figure has shown the convex part for positioning which protruded upwards from the upper surface of the conveying member 16. FIG.

  The lifting pipe 18 is made of a flexible cylindrical member that can be bent at least in the radial direction. As shown in FIG. 8, the flow path 18a of the game ball inside the resin has a circular cross-sectional shape. It consists of a pipe-shaped member made of steel. As shown in FIG. 6, the lifting pipe 18 is configured such that the lower end thereof is connected to the connection member 17, and the flow passage 17 a formed in the connection member 17 and the flow passage 18 a communicate with each other. At the same time, the upper end thereof is connected to the island tank 3, and the game ball lifted through the flow passage 18 a is accommodated in the island tank 3. Thereby, the game ball that has flowed in from the lower part of the flow passage 17a in the connecting member 17 is lifted upward to reach the flow passage 18a in the lifting pipeline 18, and is further lifted from there to be an island tank. It is configured to reach 3.

  On the other hand, the connecting member 17 is assembled on the upper surface of the lifting member 16 and can be connected to the lifting member 16 (see FIG. 2), and the connecting member 17 and the lifting member 16 are connected. In the state, the flow path 16a and the flow path 17a communicate with each other so that the game ball can pass therethrough. When the connecting member 17 and the lifting member 16 are connected, the connection state is held by a general-purpose fixing means (for example, a general-purpose screwing or locking means).

  Thus, when the connecting member 17 is connected to the lifting member 16 and assembled, the game ball that has flowed into the flow path 16a of the lifting member 16 from the end side of the conveyor belt 10 passes through the flow passage 17a of the connecting member 17. Then, it reaches the inside of the flow passage 18a of the lifting pipe 18 and is further lifted upward and conveyed to the island tank 3. Further, since the connecting member 17 can be attached to and detached from the lifting member 16, the connecting member 17 can be easily detached from the lifting member 16 at the time of maintenance or when a ball is clogged.

  Note that a positioning hole corresponding to the positioning convex portion 16b formed on the upper surface (connection surface with the connection member 17) of the lifting member 16 is formed on the lower surface (connection surface with the lifting member 16) of the connection member 17. When the connecting member 17 is connected to the lifting member 16, the positioning convex portion 16b enters and fits into the positioning hole portion 17b so that both members are positioned. Yes. Thereby, the flow path 17a of the connection member 17 and the flow path 16a of the lifting member 16 can be accurately communicated.

With the above configuration, the conveyance to the inflowing game balls during the conveying surface of the belt 10 and the polishing pad 11, pumped conduit by the rotation of the conveyor belt 10 while wiping surface contamination at the polishing pad 11 18 The lifting force at is provided. In other words, the game ball held between the transport belt 10 and the polishing pad 11 is wiped off the dirt on the surface by the rotation of the transport belt 10 and has a transport force against the game ball by the rotation. The game balls that have been given and flown into the flow path 16a of the lifting member 16, the flow path 17a of the connecting member 17, and the flow path 18a of the lifting line 18 by the transfer force (lifting force) are succeeding game balls. It can be pushed up by.

  As described above, according to the present embodiment, the conveyor belt 10 and the polishing pad 11 are provided, and the surface of the game ball is ground and the lifting force is applied simultaneously by the rotation of the conveyor belt 10. Thus, as compared with the case where the means for polishing the game ball and the means for lifting the game ball are respectively provided, the device configuration can be simplified and the manufacturing cost can be reduced.

  Here, in this embodiment, between the pressing member 12 and the lifting member 16 on the terminal end side of the conveyor belt 10, main body side backflow prevention means 14 for preventing backflow of game balls is disposed. Yes. As shown in FIG. 4, the main body side backflow preventing means 14 is a flow path from the end of the conveyor belt 10 toward the lifting pipeline 18 (in this embodiment, a flow path 16 a formed in the lifting member 16). And a backflow prevention state in which the lowermost game ball that has flowed out toward the lifting pipeline 18 is supported to prevent backflow (see FIG. 5A), and a game ball from the end of the conveyor belt 10 It is composed of a member that can be moved between a flow-permitted state (see FIG. 5B) that can be allowed to flow out of the game ball into the lifting pipeline 18 by being pressed by the.

  Specifically, a plurality of main body side backflow prevention means 14 are provided corresponding to the flow path 16a of the lifting member 16, and each of the main body side backflow prevention means 14 is swingable about the swing shaft L1. An attachment portion 14a to which one end of the coil spring 15 is attached is formed at a predetermined portion. The other end of the coil spring 15 is connected to the frame F side and is always urged in the direction of pulling the attachment portion 14a. However, in the backflow prevention state, as shown in FIG. 4 (a), the main body side backflow prevention means 14 is biased in the b direction, so that the flow path 16a of the lifting member 16 is closed and the The lowermost game ball in the flow path 16a is supported.

  When the conveyor belt 10 is rotated by driving the motor M, the main body side backflow prevention means 14 is pressed by the game ball from the end of the conveyor belt 10, and as shown in FIG. The flow is permitted by swinging in the direction a about the swing axis L1 against the urging force of 15. In such a distribution-permitted state, the end of the conveyor belt 10 and the flow path 16a of the lifting member 16 are in communication with each other, and the gaming ball can be allowed to flow out to the lifting pipeline 18.

  Further, in the present embodiment, a lifting line side backflow preventing means 19 for preventing the backflow of the game ball is disposed at the lower end portion of the lifting line 18. Such an uplift line side backflow prevention means 19 is disposed corresponding to the flow path 17a in the connecting member 17 connected to the lower end of the uplift line 18, and as shown in FIG. It consists of a disk-shaped member in which a plurality of recesses 19a are formed.

  Specifically, the pumping line side backflow prevention means 19 is in a state in which a part of the recess 19a faces the flow passage 17a, and is allowed to rotate in the direction a in FIG. It has a one-way clutch in which rotation in the b direction is restricted. Thus, when the game ball in the flow passage 17a moves upward (lifts) by the rotation of the conveyor belt 10, the transporting duct-side backflow prevention means 19 causes the moving game ball to move into the recess 19a. When the conveyor belt 10 stops rotating and the rotation of the conveying belt 10 is stopped, the lifting conduit side backflow prevention means 19 is restricted by its own weight because rotation in the b direction is restricted. Backflow (downward flow) is prevented, the game ball is stopped in a state where the game ball is fitted in the recess 10a, and the game ball above it is supported.

  According to the polishing and lifting apparatus 9 according to the above embodiment, the lower side of the lifting pipeline 18 (in the present embodiment, the connecting member 17) prevents the backward flow of the feeding pipeline to prevent the gaming ball from flowing backward. Since the means 19 is provided, it is possible to prevent the game ball inside the lifting pipeline 18 from falling when the lifting pipeline 18 is removed, and while the transport belt 10 is stopped. It is possible to avoid backflow of the game balls in the lifting pipeline 18.

  In addition, a lifting member 16 having a flow path 16 a for flowing game balls from the conveyor belt 10 toward the lifting pipeline 18 is formed, and the lower end portion of the lifting pipeline 18 is provided with the lifting member 16. Is connected to the connecting member 17 for connecting the flow path 16a of the lifting member 16 and the lifting pipe line 18, and the connecting pipe member 17 is provided with the lifting pipe side backflow prevention means 19. The connecting member 17 has the function of holding the lifting pipe side backflow prevention means 19 and the function of connecting the lifting member 16 and communicating the flow path 16 a of the lifting member 16 and the lifting pipe 18. be able to.

  Furthermore, the main body side backflow prevention means 14 disposed between the terminal end of the conveyor belt 10 and the lifting pipe 18 (specifically, the lifting member 16 to prevent the backflow of the game ball, A lifting line side backflow preventing means 19 disposed on the side of the feeding line 18 (in the present embodiment, a connecting member 17 connected to the lower end of the lifting line 18) for preventing the backflow of the game ball. Since it provided, it can prevent the backflow of the game ball in the lifting pipeline 18 and can prevent an overload from being applied to the conveyor belt 10 even when the game ball is sparsely fed. .

  In other words, the backflow prevention means 19 of the lifting pipe line prevents the game balls in the lifting pipe 18 from backflowing, and the lowest game of the game balls heading toward the lifting pipe 18 by the main body side backflow prevention means 14. Since the ball is supported, when there are a portion where the game ball is sent and a portion where the game ball is not sent in the width direction of the transport belt 10, the main body side backflow prevention means 4 Therefore, it is possible to avoid the weight of the game ball below the lifting conduit side backflow prevention means 18 from being applied to the conveyor belt 10.

  Furthermore, the main body side backflow prevention means 4 closes the flow path from the end of the conveyor belt 10 toward the lifting pipeline 18 and supports the lowermost game ball that has flowed out toward the lifting pipeline 18 to backflow. A member that is movable between a backflow prevention state that prevents the game ball from flowing and a flow permission state that is pressed by the game ball from the end of the conveyor belt 10 and that allows the game ball to flow out to the lifting conduit 18. Therefore, it is possible to avoid the occurrence of an overload on the transport belt 10 more reliably.

  In addition, since the pumping pipe line 18 which concerns on this embodiment consists of a flexible cylindrical member which can be bent at least to radial direction, the pumping pipe line 18 is installed at the time of installation in the island installation 1 of the polishing pump 9. Can be absorbed to allow dimensional errors to be absorbed, the installation to the island facility 1 can be performed satisfactorily, and the installation space can be reduced. Further, in the polishing and lifting apparatus 9 according to the present embodiment, the surface of the game ball is polished and the lifting force is applied simultaneously by the rotation of the conveyor belt 10, and the lifting pipeline 18 is provided. Since it can bend in the radial direction, when the game ball is lifted by the lifting pipeline 18 by the lifting force applied by the conveyor belt 10, the lifting pipeline 18 is radially adjusted according to the lifting force. It can be bent to make it smoother.

  Furthermore, according to this embodiment, since the cross-sectional shape in the flow path 18a of the game ball in the inside is the circular shape, the lift pipe 18 can make the game ball lift more smoothly. . Furthermore, since the lifting pipeline 18 is made of a resin pipe-like member that allows a game ball to pass through, the lifting pipeline 18 having a simpler configuration can be obtained. Manufacturing cost can be reduced.

Having described the present embodiment, the present invention is not limited thereto, the island equipment that apply For example is not limited to the present embodiment, it allows parallel pachinko game machine 2 Various forms may be used.

Pumped tube roadside backflow preventing means for preventing the backflow of game ball into the lower end portion of the pumped line is the shall is disposed, and, flow circulating the game ball toward the pumped line from the conveyor belt A lifting member formed with a path and a flow path that is disposed at the lower end of the lifting pipe and connects the lifting member to connect the flow path of the lifting member and the lifting pipe are formed. And a connecting pipe and a lifting member are positioned on the connecting member and the lifting member by positioning both members at the time of connection. As long as the polishing and lifting apparatus is provided with positioning means capable of communicating with the flow path of the lifting member, it can also be applied to devices having different external shapes or those having other functions added.

DESCRIPTION OF SYMBOLS 1 Island equipment 2 Pachinko machine 3 Island tanks 4a, 4b Supply rod 5a, 5b Overflow rod 6 Bellows tube 7 In-island tank 8 Outrail 9 Polishing feeding device 10 Conveying belt 11 Polishing cloth 12 Press member 13 Receiving member 14 Main body side Backflow prevention means 15 Coil spring 16 Lifting member 17 Connection member 18 Lifting pipeline 19 Lifting pipeline side backflow prevention means

Claims (1)

An endless transport belt that is suspended between at least a pair of pulleys and is rotatable, and on which a transport surface of a game ball is formed;
An abrasive cloth disposed at a position facing the conveying surface of the conveying belt, and sandwiching a game ball flowing between the conveying surface and wiping away dirt on the surface;
A lifting conduit for lifting game balls that have flowed out of the conveying surface of the conveying belt;
Comprising a against inflowing game balls between the polishing cloth and the conveying surface of the conveyor belt, while wiping the surface dirt at the polishing cloth by the rotation of the conveyor belt lift in the pumped conduit A polishing lifting device to which a feeding force is applied,
The lift the lower end of Okukanro is a shall be arranged is pumped tube roadside backflow prevention means for preventing a reverse flow of a game ball, and, game balls toward the pumped line from the conveyor belt A lifting member formed with a flow path for circulating the fluid, and disposed at a lower end portion of the lifting pipeline, and connected to the lifting member to connect the flow path of the lifting member and the lifting pipeline. And a connecting member formed with a flow passage to be provided, and the connecting member is provided with a backflow prevention means on the pumping line side. The connecting member and the lifting member include both members when connected. A polishing / lifting apparatus characterized in that positioning means capable of positioning the connecting member and communicating the flow passage of the connecting member and the flow path of the lifting member is disposed.

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