JP4740039B2 - Residual concrete processing method of concrete pump and residual concrete processing apparatus of concrete pump - Google Patents

Description

  The present invention relates to a residual concrete processing method for a concrete pump and a residual concrete processing apparatus for a concrete pump.

  For example, various concrete pumps such as a concrete pump truck have been known in the past, and these are used for placing work at construction sites.

  This type of concrete pressure feeder generally includes a hopper to which concrete is supplied, and a piston pump portion that sucks the concrete in the hopper by a reciprocating motion of a piston in a cylinder pipe and pumps the concrete into the pressure feed pipe portion. In the placement work, first, concrete (green concrete) is supplied from the ready-mixed concrete car into the hopper of the concrete pumping machine, and the supplied concrete is pumped to the pumped pipe part by the piston pump part. The placement work is performed by pressure-feeding and discharging concrete from a tip discharge port provided at the tip of the pressure-feed pipe portion to a predetermined placement location.

  By the way, in this kind of concrete pressure feeder, concrete always remains in the machine body after the above-described placing work is completed. If the remaining concrete (hereinafter referred to as “remaining concrete”) is left as it is, it will harden in about one hour, causing a failure of the concrete pumping machine.

  Therefore, immediately after the above-described placing work is completed, the remaining control is performed.

  For example, as described in Japanese Patent Application Laid-Open No. 8-197531, this residual con processing method is performed by press-fitting an elastic press-fitting member such as a sponge into the base end of a pumping pipe portion of a concrete press, and air pressure or feed A method is generally used in which the elastic press-fitting member is compressed by water pressure or the like and discharged from the tip discharge port of the pressure-feed pipe portion, and the remaining condenser in the pressure-feed pipe portion is pumped by the elastic press-fitting member and discharged from the tip discharge port. Is.

  Therefore, a general concrete pump truck for driving has a structure in which a part of the proximal end side of the pressure feeding pipe part is removable in advance, and this part is removed to remove the base end of the pressure feeding pipe part. In many cases, an elastic press-fitting member can be press-fitted and inserted into the pressure tube from the tube port. Further, in many cases, air pressure can be supplied from the air tank by connecting an air hose of an air tank provided to the base end of the pressure feeding pipe portion via a flange disc body.

  By the way, when the residual container discharged from the concrete feeder is disposed of by an industrial waste disposal contractor, or when the remaining container is returned to the concrete tank of a ready-mixed concrete vehicle from the tip discharge port of the pumping pipe unit and reused. There is.

  However, in any case, the conventional residual-container processing method merely pushes out (discharges) the residual condensate in the pumping pipe section by the elastic press-fitting member, and the residual condensate in the hopper is recovered from the bottom discharge port and disposed of. Then, the remaining concrete in the pipe line from the base end of the cylinder pipe of the piston pump part that pumps the concrete in the hopper to the pumping pipe part is flushed with the pumping water and discharged, and then discarded. There was only.

  In other words, up to now, at the end of the placement work, a certain amount of residual components must be disposed of. Therefore, it takes time and effort to dispose of the remaining components. It was costly and also had a negative impact on the environment.

JP-A-8-197531

  However, after the placement operation is completed, not only in the remaining container in the pressure feeding pipe part but also in the pipe line from the proximal end of the cylinder pipe of the piston pump part for feeding concrete in the hopper to the pressure feeding pipe part to the pressure feeding pipe part Until now, no effective method has been proposed that can quickly and easily return residual components remaining in the hopper and residual components in the hopper to the concrete tank of the ready-mixed concrete vehicle from the tip discharge port of the pressure-feed pipe section. However, the current situation is that a large amount of residual components are inevitably discarded at the time of placing work. Therefore, an epoch-making residue that can reduce wasteful labor and cost for processing these residual components. The provision of concrete processing methods is highly desired in this type of industry.

  The present invention has been completed in view of the above problems. After stopping the concrete pumping of the concrete pumping machine, not only in the pumping pipe section but also in the hopper and from the hopper through the cylinder pipe of the piston pump section. Any concrete remaining in the pipe line from the cylinder pipe of the piston pump part to the pipe part (that is, from the base end of the cylinder pipe of the piston pump part) to the pipe part is quickly and satisfactorily and easily desired from the tip discharge port of the pressure feed pipe part. For example, it is possible to easily discharge the residual concrete in the concrete feeder to the concrete tank of the ready-mixed concrete vehicle immediately after the placement work. It is an object of the present invention to provide a processing method and a residual concrete processing apparatus for a concrete pressure feeder.

  The gist of the present invention will be described with reference to the accompanying drawings.

A hopper 1 to which concrete a is supplied, and a piston pump part 2 that sucks the concrete in the hopper 1 by reciprocating movement of the piston 2B in the cylinder pipe 2A and pumps it to the pressure feeding pipe part 3, and when the concrete is fed, concrete a supplied to the hopper 1 is pumped into the pumping tube portion 3 by the piston pump unit 2, the structure concrete pumping machine to discharge from the tip end outlet 3a provided at the tip of the pumping tube portion 3 a residual concrete processing method, the concrete pumping stops, then Datsuhama said piston 2B from the piston pump unit 2 the cylinder tube 2A, detachably attached to the proximal end of the cylinder tube 2A to the cylinder tube 2A A flange plate for connection 8 is provided to which the other end of the air hose 7 connected to the air supply source P can be attached. After the elastic press-fitting member 4 connected to the connecting flange disk body 8 from the base end of the cylinder pipe 2A via the rope body 9 is press-fitted and inserted, the cylinder pipe is inserted. An air hose 7 is connected to the end of 2A via the connection flange plate body 8, and the elastic press-fitting member is supplied with air pressure from the end of the cylinder tube 2A via the air hose 7 by the air supply source P. 4 be to圧動from the cylinder tube 2A to conduit intermediate position of the pumping tube portion 3, the concrete a from the cylinder tube 2A until at least the conduit intermediate position of the pumping tube portion 3 elastically pressed members 4 was pumped by, when to圧動the elastic press-fitting member 4 from the cylinder tube 2A to conduit intermediate position of the pumping tube portion 3 by the air pressure, the elastic press-fitting member by said rope body 9 Is controlled to a position in front of the pipe opening / closing valve 10 provided in the middle of the pipe line of the pressure feeding pipe section 3 and to the position in front of the pipe opening / closing valve 10 of the pressure feeding pipe section 3. After the elastic press-fitting member 4 is pressed, the pipe opening / closing valve 10 is closed, and then the proximal end side of the pressure feed pipe portion 3 is moved further to the middle of the pipe line where the elastic press-fitting member 4 is pressed. By opening a predetermined position, a pipe opening 3b communicating with the tip discharge port 3a is opened in the pressure feed pipe section 3, and the rope body 9 is drawn from the pressure feed pipe section 3 to move the elastic press-fitting member. 4, the concrete a in the hopper 1 collected from the bottom discharge port 1a of the hopper 1 is introduced from the pipe opening opening 3b to the pumping pipe section 3, and further this pipe opening opening The elastic press-fitting member 4 is connected to the pumping pipe section 3 from 3b. Alternatively, a second elastic press-fitting member 6 different from the elastic press-fitting member 4 is press-fitted and inserted, and the pipe opening / closing valve 10 is opened to be supplied from the pipe opening 3b. by discharging from the elastic press-fitting member 4 or the second elastic press-fitting member 6 by圧動of the pumping tube section 3 distal discharge ports 3a by the air pressure, the elastic press-fitting member 4 or the second elastic press-fitting member 6 by those according to the residual concrete processing method of the concrete pumping machine, characterized in that pumping the concrete a of the pumping tube portion 3 discharges from the tip end outlet 3a.

Also, the rope member 9 and the elastic press-fitting member 4 and structure linked to disengageably through the detachable locking mechanism k, the conduit open aperture communicating with the tip ejection openings 3a into the pumping tube portion 3 the part 3b is opened, the rope body the detachable locking mechanism k retrieves the elastic press-fitting member 4 from the conduit opening opening 3b of the pumping tube portion 3 hauled the rope member 9 locks disengage those of the residual concrete processing method of the concrete pumping machine according to claim 1, wherein the desorbing said elastic press-fitting member 4 from 9.

Further, the after opening the pipe opening opening 3b which communicates with the tip end outlet 3a of the pumping tube portion 3, the introduction tube 5 and communicated with the conduit open aperture portion 3b of the feeding tube portion 3 A base end introduction port 5a of the introduction pipe 5 is opened upward, and the concrete a in the hopper 1 recovered from the bottom discharge port 1a of the hopper 1 is transferred from the base end introduction port 5a of the introduction pipe 5 to the pressure feed pipe. introduced into part 3, further press-fitting the elastic press-fitting member 4 or the second elastic press-fitting member 6 from the proximal end introducing port 5a of the inlet pipe 5, the proximal inlet port 5a of the inlet pipe 5 that by the supplied air pressure ejected from the elastic press-fitting member 4 or the second elastic press-fitting member 6 from the inlet pipe 5 of the pumping tube portion 3 by圧動into the pumping tube portion 3 tip ejection openings 3a in, the elastic press-fitting member 4 or the second elastic press-fitting Concrete pumping machine according to any one of claims 1, 2, characterized in that the concrete a of the inlet pipe and the pumping tube section 35 and pumped by wood 6 discharged from the tip end outlet 3a This relates to the method for treating residual concrete.

Moreover, the hopper 1 to which the concrete a is supplied and the piston pump portion 2 that sucks the concrete in the hopper 1 by the reciprocating motion of the piston 2B in the cylinder tube 2A and pumps it to the pressure feed tube portion 3 are provided. the concrete a supplied to the hopper 1 is pumped into the pumping tube portion 3 by the piston pump unit 2, configured concrete pumped to discharge from the tip end outlet 3a provided at the tip of the pumping tube portion 3 a residual concrete processing device of the machine, the other end of the air hose 7 having one end connected to the air supply source P, the piston pump portion 2 of the cylinder tube 2A end removably attachable to a connecting flange disk of A body 8 is provided, and an elastic press-fitting member 4 is connected to the connecting flange disk body 8 via a rope body 9. Pump unit 1 in and press-fitting inserted in the pumping tube portion 3 constitutes repression in contact with the shape, the concrete pumping stops, then Datsuhama said piston 2B from the piston pump unit 2 the cylinder tube 2A , after fitted the rope body 9 with interpolated press-fitted to the elastic press-fitting member 4 from the proximal end of the cylinder tube 2A, the through the connecting flange disk body 8 to the end of the cylinder tube 2A connect the air hose 7, when for圧動the press-fitting member 4 by the air pressure supplied through the air hose 7 from the air supply source P to the cylinder tube 2A from the cylinder tube 2A to the pumping pipe section 3, the The length of the rope body 9 is set so as to restrict the pressureable range of the elastic press-fitting member 4 to a position in front of the pipe opening / closing valve 10 provided in the middle of the pipe line of the pumping pipe section 3. The present invention relates to a residual concrete processing apparatus of a concrete pumping machine.

5. The residual concrete processing apparatus for a concrete pumping machine according to claim 4 , wherein the rope body 9 and the elastic press-fitting member 4 are detachably connected via a detachable locking mechanism k. It is related to.

  Since the present invention is as described above, after the concrete pumping of the concrete pumping machine is stopped, the concrete and hopper in the pipe line from the base end of the cylinder pipe of the piston pump part to the pumping pipe part can be obtained by a simple operation. The concrete inside and the concrete inside the pumping pipe part are all pumped and discharged from the tip discharge port of the pumping pipe part through the pumping pipe part.

  That is, the concrete remaining in the concrete pumping machine can be discharged (discharged) from the tip discharge port of the pumping pipe section to a desired discharge location. For example, immediately after placing, the residual concrete of the concrete pumping machine is returned to the ready-mixed concrete car. It is also possible.

  Therefore, until now, a large amount of residual concrete had to be disposed of each time of placing work, which was wasteful. However, in the present invention, the residual concrete is disposed of by simple work. It can be returned to a ready-mixed concrete car and reused as ready-mixed concrete, so it is groundbreaking and practical, such as reducing the time and waste of disposing of a large amount of residual concrete and being excellent in the environment. It becomes the residual concrete processing method of concrete pumping machine with excellent properties.

Further, according to the invention of claim 3 , since the concrete recovered from the hopper may be introduced from the proximal end opening opening above the introduction pipe connected to the pipe opening opening of the pressure feeding pipe section, It becomes the residual concrete processing method of the concrete pumping machine which can implement the residual concrete processing method of this invention more easily with sufficient workability | operativity.

Further, according to the invention described in claim 4, it is an epoch-making and practicality capable of easily carrying out the excellent method for treating a residual concrete of the concrete pressure feeder according to the present invention with good workability while having a simple configuration. It is possible to provide a residual concrete processing apparatus for a concrete pumping machine that excels.

  Embodiments of the present invention that are considered suitable (how to carry out the invention) will be briefly described with reference to the drawings, illustrating the operation of the present invention.

  The present invention includes a hopper 1 to which concrete a is supplied, and a piston pump unit 2 that sucks the concrete a in the hopper 1 by the reciprocating motion of the piston 2B in the cylinder tube 2A and pumps the concrete a in the pressure feeding tube unit 3. At the time of concrete pumping, the concrete a supplied into the hopper 1 is pumped to the pumping pipe section 3 by the piston pump section 2 and discharged from the tip discharge port 3a provided at the tip of the pumping pipe section 3. It is the residual concrete processing method of a concrete pressure feeder.

  After stopping the concrete pumping, first, the piston 2B is detached from the cylinder pipe 2A of the piston pump portion 2.

  The elastic press-fitting member 4 is press-fitted from the base end of the cylinder pipe 2A, and the elastic press-fitting member 4 is moved from the cylinder pipe 2A to the midway position of the pressure feed pipe portion 3 by the air pressure supplied from the base end of the cylinder pipe 2A. Press.

  By pressing the elastic press-fitting member 4, the concrete a that has remained from the cylinder pipe 2 </ b> A to at least the middle position of the pipe line where the elastic press-fitting member 4 in the pressure feed pipe portion 3 is pressed is elastically press-fitted member. 4 can be pumped.

  Next, by opening a predetermined position on the proximal end side from the midway position of the pipe line where the elastic press-fitting member 4 of the pressure-feeding pipe part 3 is moved, the pressure-feeding pipe part 3 communicates with the distal end discharge port 3a. The pipe opening opening 3b to be opened is opened.

  The concrete a in the hopper 1 recovered from the bottom discharge port 1a of the hopper 1 is introduced into the pressure feeding pipe portion 3 from the pipe opening 3b.

  Further, the elastic press-fitting member 4 or a second elastic press-fitting member 6 different from the elastic press-fitting member 4 is press-fitted and inserted into the pressure-feeding pipe part 3 from the pipe-opening opening 3b. The elastic press-fitting member 4 or the second elastic press-fitting member 6 is pressed by the air pressure supplied from the opening 3b, and is discharged from the distal end discharge port 3a of the pressure feed pipe unit 3.

  By being pressed by the elastic press-fitting member 4 or the second elastic press-fitting member 6, the concrete a in the pressure feed pipe portion 3 is discharged from the tip discharge port 3a.

  That is, in the present invention, the concrete a in the cylinder pipe 2A of the piston pump part 2 is pumped and introduced into the pumping pipe part 3, and the concrete a in the hopper 1 is also recovered and the pipe line of the pumping pipe part 3 is opened. It introduce | transduces into the pressure feed pipe part 3 from the opening part 3b, and finally the concrete a in the pressure feed pipe part 3 is pressure-fed and discharged from the front-end | tip discharge port 3a.

  Therefore, according to the present invention, not only the concrete a remaining in the pumping pipe section 3 but also the concrete a remaining in the pipe line from the base end of the cylinder pipe 2A of the piston pump section 2 to the pumping pipe section 3 is also obtained. The concrete a remaining in the hopper 1 can also be discharged (discharged) from the tip discharge port 3a of the pressure-feeding pipe part 3 to a desired discharge position via the pressure-feeding pipe part 3, so that, for example, the placing work can be performed. It can be quickly and easily returned to the ready-mixed concrete car before the residual concrete a of the finished concrete pumping machine is hardened, thus reducing problems such as wasteful labor and cost of disposing a large amount of residual concrete a and adverse effects on the environment You can do a little.

  For example, the introduction pipe 5 is connected in communication with the pipe opening 3 b of the pressure feed pipe section 3, and the proximal end introduction port 5 a of the introduction pipe 5 is provided in an open state, and the hopper 1 If the concrete a inside is introduced into the pressure-feeding pipe part 3, the introduction pipe 5 such as an L-shaped elbow, for example, is simply connected to the pipe opening 3b of the pressure-feeding pipe part 3 in communication. The introduction port 5a can be easily directed upward, and the introduction of the concrete a recovered from the hopper 1 can be performed very easily and with good workability because the introduction port 5a faces upward. At this time, the elastic press-fitting member 4 or the second elastic press-fitting member 6 is press-fitted from the proximal end introduction port 5 a of the introduction pipe 5, and the air pressure supplied from the proximal end introduction port 5 a of the introduction pipe 5 is inserted. Thus, the elastic press-fitting member 4 or the second elastic press-fitting member 6 may be compressed from the introduction pipe 5 to the pressure feed pipe part 3 and discharged from the tip discharge port 3a of the pressure feed pipe part 3.

In the invention according to claim 4 , after the elastic press-fitting member 4 is press-fitted and inserted from the base end of the cylinder tube 2A and the rope body 9 is fitted, the connecting flange is fitted to the end of the cylinder tube 2A. By connecting the air hose 7 via the board 8, the air pressure can be supplied from the end of the cylinder pipe 2 </ b> A via the air hose 7 by the air supply source P.

  With this air pressure, the elastic press-fitting member 4 is pressed from the cylinder pipe 2A to the middle position of the pipe line of the pumping pipe part 3, and thereby the concrete a in the pipe line from the base end of the cylinder pipe 2A to the pumping pipe part 3 is moved. It can be pressed and fed by the elastic press-fitting member 4 that moves.

  Further, the elastic press-fitting member 4 is restricted by the rope body 9 so that the pressureable range is limited to a position before the pipe opening / closing valve 10 provided in the middle of the pipe line of the pumping pipe section 3. Concrete a existing up to the position before the pipe opening / closing valve is pumped by the elastic press-fitting member 4.

  In this way, after the elastic press-fitting member 4 is moved to a position before the pipe opening / closing valve 10 of the pressure feeding pipe section 3, the pipe opening / closing valve 10 is closed to prevent the back flow of the concrete a.

  Next, a predetermined position on the base end side is released from the midway position of the pipe line where the elastic press-fitting member 4 of the pressure-feed pipe portion 3 is pressed (for example, generally removable in this type of concrete pressure feeder). By removing a part of the base end of the pressure feed pipe portion 3 having a possible structure and opening the base end side of the pressure feed pipe portion 3, the pressure feed pipe portion 3 communicates with the distal end discharge port 3a. The pipe opening opening 3b to be opened is opened.

  The elastic press-fitting member 4 can be easily taken out by pulling the rope body 9 from the pipe opening 3 b of the pressure-feeding pipe section 3.

That is, according to the invention described in claim 4 , after the concrete pumping of the concrete pumping machine is stopped, the position where at least the pumping pipe section 3 pipe opening / closing valve 10 is provided from the base end of the cylinder pipe 2A of the piston pump section 2 is provided. It can be pumped to the discharge side (tip side) by the elastic press-fitting member 4 that presses, and then the pipe opening / closing valve 10 is closed to open the pipe opening 3 b that opens to the pumping pipe 3. The operation of taking out the elastic press-fitting member 4 from the rope body 9 can be easily performed.

  Therefore, for example, after the above-described operation, subsequently, the concrete a in the hopper 1 collected from the bottom discharge port 1a of the hopper 1 is introduced from the pipe opening 3b of the pressure feeding pipe portion 3, and this pressure feeding pipe portion 3 is inserted into the pressure-feeding pipe section 3 by pressing the elastic pressure-fitting member 4 or a second elastic pressure-fitting member 6 different from the elastic pressure-fitting member 4, and the pipe opening / closing valve 10 is opened. 3, by pressing the elastic press-fitting member 4 or the second elastic press-fitting member 6 with the air pressure supplied from the pipe opening 3 b, the concrete a in the pressure feed pipe 3 is moved to the tip of the pressure feed pipe 3. Can be discharged from the discharge port.

Therefore, according to the fourth aspect of the invention, for example, after finishing the placing work by the concrete pressure feeder, most of the concrete a remaining in the concrete pressure feeder is transferred to the pressure feeding pipe portion 3 via the pressure feeding pipe portion 3. It becomes a residual concrete processing apparatus of a concrete pumping machine excellent in practicality that can easily implement an excellent residual concrete pumping method such as discharging from the tip discharge port 3a.

  Specific embodiments of the present invention will be described with reference to the drawings.

  The present embodiment includes a hopper 1 to which concrete a is supplied, and a piston pump unit 2 that sucks the concrete in the hopper 1 by the reciprocating motion of the piston 2B in the cylinder tube 2A and pumps it to the pressure feeding tube unit 3. At the time of concrete pumping, the concrete a supplied into the hopper 1 is pumped to the pumping pipe section 3 by the piston pump section 2 and discharged from the tip discharge port 3a provided at the tip of the pumping pipe section 3. It is the residual concrete processing method of a concrete pressure feeder.

  In addition, as shown in FIG. 15, the concrete pumping machine employ | adopts the general concrete pump truck used for the construction work of a construction site.

  Further, as shown in FIG. 2, a pair of piston pump portions 2 are provided side by side in the hopper 1, and the pipe port (suction / discharge port) at the tip of the cylinder tube 2 </ b> A of each piston pump portion 2 communicates with the hopper 1. Further, a connection switching pipe 11 is provided in the hopper 1 for alternately connecting to one of the pair of piston pump parts 2 and connecting the one piston pump part 2 to the pressure feed pipe part 3. The pair of piston pump portions 2 alternately repeats suction and pressure delivery and discharge, and is configured such that the connection switching pipe 11 is alternately connected to one of the piston pump portions 2 performing pressure delivery and discharge. Therefore, it is a general structure as this kind of concrete pressure feeder.

  Therefore, at the time of concrete pumping, as shown in FIG. 2, one piston pump part 2 of the pair of piston pump parts 2 sucks the concrete a in the hopper 1 into the cylinder pipe 2A and the other piston pump part. 2 is that the concrete a in the cylinder pipe 2A is pumped and discharged to the pumping pipe section 3 through the connection switching pipe 11, and then the suction and pumping discharge are reversed, and the connection of the connection switching pipe 11 is switched and repeated. Thus, the concrete a in the hopper 1 is sequentially pumped to the pumping pipe section 3.

  Further, the residual concrete processing method of the concrete pumping apparatus of the present embodiment is such that the cylinder tube 2A of the piston pump part 2 is connected to the other end of the air hose 7 having one end connected to the air supply source P as shown in FIG. Implemented by using a residual concrete processing apparatus S having a configuration in which a connecting flange disk body 8 that can be detachably attached is provided at an end, and an elastic press-fitting member 4 is connected to the connecting flange disk body 8 via a rope body 9. An example of this will be described.

  Each part of this residual concrete processing apparatus S is explained in full detail.

  The base end of the air hose 7 is connected to an air supply source P (air tank) generally provided in a concrete pump (concrete pump car) (see FIG. 15).

  Further, the connecting flange disk body 8 is coupled to the tip of the air hose 7.

  As shown in FIGS. 3 to 5, the connecting flange disk body 8 has a hose connection for connecting the air hose 7 to the flange disk part 8 </ b> A having a diameter slightly larger than the base end of the cylinder pipe 2 </ b> A. A portion 8B is provided, and the flange plate portion 8A of the connecting flange plate body 8 is closed so as to abut against and contact with the base end of the cylinder tube 2A, and is connected to the hose connection portion 8B. The air hose 7 is configured to be connected in a sealed state to the tube port of the cylinder pipe 2A by the flange plate portion 8A. It should be noted that a compression member 14 (elastic resin in this embodiment) is provided at the abutting contact portion of the flange disk portion 8A with the cylinder tube 2A to improve the sealing performance, and the base of the cylinder tube 2A is provided. A positioning reference contact portion 15 that contacts the outer peripheral surface of the end and positions the contact position of the flange disc body 8A against the cylinder pipe 2A is provided on the outer peripheral portion of the flange disc body 8A (see FIG. 1).

  Further, a nut 13B tightened and abutted on a male threaded rod 13A of the chuck mechanism 13 provided at the base end of the cylinder pipe 2A is placed at a predetermined outer peripheral edge portion of the flange disk portion 8A of the connecting flange disk body 8. A locked counter plate portion 12 is provided.

  Accordingly, as shown in FIGS. 4 and 5, the connecting flange disc body 8 is abutted and abutted so that the positioning reference abutting portion 15 of the flange portion 8A abuts the outer peripheral surface of the cylinder tube 2A. The male threaded rod 13A of the chuck mechanism 13 at the base end of the cylinder tube 2A is interposed between the locked opposing plate portions 12 of the connecting flange plate 8, and the nut 13B is screwed into the male threaded rod 13A. The connecting flange plate 8 is detachably attached and fixed to the base end of the cylinder tube 2A by tightening and pressing the side edge of the locked opposing plate portion 12. The chuck mechanism 13 is provided only on the cylinder pipe 2A of the piston pump portion 2 on the front side (lower side in FIG. 3) where the operator can easily work among the pair of piston pump portions 2.

  Further, the rope body 9 is connected to the connecting flange disk body 8, but the rope body 9 and the connecting flange disk body 8 may be configured to be detachable.

  Further, the elastic press-fitting member 4 connected to the connecting flange disc body 8 via the rope body 9 is formed by surrounding the sponge 4A with a mesh body 4B as shown in FIG. The cylinder tube 2A, the connection switching tube 11 and the pressure feeding tube portion 3 are press-fitted into the cylinder tube 2A and formed into a shape that makes an elastic contact.

  Therefore, by pressing the elastic press-fitting member 4, the concrete a in the cylinder pipe 2A, the connection switching pipe 11 and the pressure feed pipe portion 3 can be pressed and fed.

  Further, the elastic press-fitting member 4 and the rope body 9 are configured to be detachably connected via an attaching / detaching locking mechanism k. In this embodiment, the locking structure of the detachable locking mechanism k is provided with a hook joint at the tip of the rope body 9, and this hook joint can be freely attached to and detached from the locked ring provided on the net 4 </ b> B of the elastic press-fitting member 4. Adopting a structure that locks to.

  Further, as shown in FIG. 6, the elastic press-fitting member 4 is press-fitted into the cylinder pipe 2A of the piston pump unit 2 and the rope body 9 is fitted, and a connecting flange is inserted into the proximal end of the cylinder pipe 2A. When the elastic press-fitting member 4 is pressed from the cylinder pipe 2A to the pressure-feed pipe portion 3 via the connection switching pipe 11 with the panel body 8 being detachably attached and fixed, the elastic press-fitting member 4 can be pressed. The length of the rope body 9 was set so that the range was regulated by the rope body 9 up to a position before a later-described pipe opening / closing valve 10 provided at a midway position of the pressure feeding pipe section 3. The configuration. Accordingly, the rope body 9 functions as a restricting means for restricting the pressureable range of the elastic press-fitting member 4 to a position before the pipe opening / closing valve 10, and the rope body 9 has a pressure feeding pipe section 3 described later. The elastic press-fitting member 4 in the pressure-feeding pipe line 3 can be satisfactorily taken out by pulling the rope body 9 from the pipe-opening opening 3b on the base end side, and also functions as a taking-out means. .

  Subsequently, the procedure of the residual concrete processing method of a present Example is explained in full detail.

  When the concrete placing work is finished, the concrete a remaining in the hopper 1 is transferred from the tip discharge port 3a of the pressure feeding pipe part 3 to the ready-mixed concrete car by the concrete pumping by the normal piston pump part 2 as in the placing work. Return (repeated operation of the piston pump part 2 forward and reverse) to return the surplus concrete a to the ready-mixed concrete car by the piston pressure of the piston pump part 2 as much as possible.

  Next, the concrete pumping of the concrete pumping machine is stopped, that is, the operation of the piston 2B of the pair of piston pump units 2 is stopped, and the switching operation of the connection switching pipe 11 is also stopped. At this time, of the pair of piston pump parts 2 arranged in parallel with the hopper 1, the piston 2B of one piston pump part 2 provided with the above-described chuck mechanism 13 is the dead point on the base end side, and the other piston pump part 2 The piston 2B is adjusted so as to be substantially located at the dead point on the front end side, and the connection switching pipe 11 is connected to one piston pump portion 2 provided with the chuck mechanism 13 and stopped (power is turned off).

  Next, the piston 2B is detached from the cylinder pipe 2A of the piston pump unit 2. Specifically, as shown in FIG. 3, the piston 2B of one piston pump portion 2 substantially located at the dead point on the proximal end side is moved from the proximal end side pipe port in the cylinder pipe 2A to the pipe outward position. Move it off and on.

  As shown in FIGS. 4 and 5, the elastic contact member 4 of the residual concrete processing apparatus S is press-fitted and inserted from the base end side of the cylinder pipe 2A of the one piston pump section 2, and further the rope The body 9 is inserted, the connecting flange disk body 8 of the residual concrete processing apparatus S is attached and fixed, and the air hose 7 is connected to the cylinder pipe 2A to supply air pressure from the air supply source P.

  Due to the air pressure from the air supply source P, the elastic press-fitting member 4 is compressed from the cylinder pipe 2A through the connection switching pipe 11 to the midway position of the pressure feed pipe section 3.

  At this time, as shown in FIG. 6, the elastic press-fitting member 4 is regulated by the length of the rope body 9 and is provided in advance at a predetermined position of the pressure-feed pipe portion 3 (a concrete pump car of this type). The pressure is stopped and regulated at a position in front of the pipe opening / closing valve 10 (provided in many cases in advance).

  Thus, the elastic press-fit member 4 that compresses the concrete a remaining from the proximal end of the cylinder pipe 2A to the position before the pipe opening / closing valve 10 of the pressure-feed pipe section 3 through the connection switching pipe 11 is provided. Pump.

  In addition, the connection switching pipe 11 that connects the cylinder pipe 2A and the pressure feeding pipe section 3 to each other is connected to each cylinder pipe 2A of the pair of piston pump sections 2 alternately, so that the airtightness is low and quare leakage occurs. Since it is easy, air is supplied from the air supply source P at a stretch (maximum). Thus, regardless of the influence of the air leakage, the elastic press-fitting member 4 can be surely moved from the cylinder pipe 2A through the connection switching pipe 11 to the midway portion of the pressure feed pipe section 3 at once.

  Next, as shown in FIG. 8, the pipe opening / closing valve 10 which has been in the open state of the pressure feeding pipe section 3 is closed to prevent the concrete a from flowing backward from the pipe opening / closing valve 10. The conduit opening / closing valve 10 has a structure in which a shield in the conduit shields or unshields the conduit by rotating the operation lever 10a. The pipe opening / closing valve 10 is provided in advance in many of this type of concrete pump cars, and the opening / closing structure may adopt any existing structure.

  After the pipe opening / closing valve 10 is closed, for the sake of safety, the bolts of the air bleeding part 16 shown in FIG. 8 are loosened to release the air from the pressure feeding pipe part 3. By opening a predetermined position on the base end side from the midway position of the pipe line where the elastic press-fitting member 4 is pressed (position before the pipe opening and closing valve 10), the distal discharge port 3a and The communicating pipe opening opening 3b is opened.

  Specifically, as shown in FIGS. 7 and 9, a base end bent pipe portion 3 ′ connected to the connection switching pipe 11 as a part of the base end of the pressure feed pipe portion 3 is connected to a hinge portion 17. Through the main part (the side having the distal end discharge port 3a on the distal end side) of the pressure-feeding pipe part 3 and rotating, and the pipe line is opened to the proximal end side of the pressure-feeding pipe part 3 (the main part). The opening 3b is opened.

  As shown in FIG. 7, an elastic press-fitting member press-fitted into the pressure-feed pipe portion 3 by pulling the rope body 9 of the residual concrete processing apparatus S from the pipe opening 3 b of the pressure-feed pipe portion 3. 4 is removed, and the attachment / detachment locking mechanism k is unlocked to remove the elastic press-fitting member 4 from the rope body 9. The rope body 9 is taken out from the base end side of the cylinder tube 2A.

  Next, the concrete a in the hopper 1 collected from the bottom outlet 1 a of the hopper 1 is introduced from the pipe opening 3 b of the pressure feed pipe 3 into the pressure feed pipe 3.

  The concrete a is recovered from the hopper 1 as shown in FIG. 9 in a recovery container 17 (for example, a pail can) disposed below the bottom discharge port 1a of the hopper 1. It should be noted that if the collection container 17 collects a large amount of concrete a in one collection container 17, the subsequent introduction work becomes heavy and difficult, so prepare a plurality of collection containers and collect them separately. . In the figure, reference numeral 23 denotes an open / close lid 23 of the bottom discharge port 1 a of the hopper 1.

  Further, as shown in FIG. 10, the introduction pipe 5 is connected to the conduit opening 3 b as shown in FIG. 10, and as shown in FIG. 11, from the proximal end introduction port 5 a of the introduction pipe 5 (for example, The concrete a in the collection container 17 is introduced (using a funnel 18 or the like). That is, the recovered concrete a recovered from the hopper 1 is introduced into the pressure feed pipe portion 3 through the introduction pipe 5.

  The introduction pipe 5 is a 7-inch bent pipe. This is the same tube diameter as that of the pressure-feeding tube portion 3. The introduction pipe 5 and the pressure feeding pipe section 3 are connected and fixed by a pipe connector 19 that holds and fixes a flange joint formed at the end of each pipe. The pressure feeding pipe section 3 is connected to a plurality of divided pipes, and a pipe connecting tool for connecting and fixing the divided pipes constituting the pressure feeding pipe section 3 is adopted as the pipe connecting tool 19.

  Next, as shown in FIGS. 11 and 13, a second elastic press-fitting member 6 different from the elastic press-fitting member 4 is press-fitted from the proximal end introduction port 5a of the introduction pipe 5 connected to the pipe opening 3b. Insert. The second elastic press-fitting member 6 is made of a sponge and has a configuration in which it is press-fitted into the introduction pipe 5 and the pressure-feed pipe portion 3 to make an elastic contact. In place of the second elastic press-fitting member 6, the elastic press-fitting member 4 separated from the rope body 9 and disengaged may be used.

  Next, as shown in FIGS. 11 and 12, a flange joint portion at the end portion of the proximal end introduction port 5a of the introduction pipe 5 and a flange joint portion at the end portion of the air hose 20 connected to the air supply source P are connected. The air hose 20 is connected to the introduction pipe 5 by connecting the pipe 20A through the pipe connector 21 similar to the pipe connector 19. Note that the air supply source P (air tank) and the air hose 20 are provided in advance in the concrete pump truck of this embodiment, similar to those provided in many of this type of concrete pressure feeders (concrete pump truck). What is being used is adopted.

  By opening the pipe opening / closing valve 10 of the pressure feeding pipe section 3 and supplying air pressure from the air supply source P to the introduction pipe 5 through the air hose 20, as shown in FIG. The elastic press-fitting member 6 is pressed from the introduction pipe 5 to the pressure feed pipe section 3 and discharged from the distal end discharge port 3a of the pressure feed pipe section 3 so that the concrete a remaining in the introduction pipe 5 and the pressure feed pipe section 3 can be obtained. The pressure is fed by the second elastic press-fitting member 6 that is moved, and is discharged from the tip discharge port 3 a of the pressure-feed tube portion 3. The tip discharge port 3a of the pressure feed pipe section 3 is set in advance at a desired discharge location (for example, a hopper of a concrete tank of a ready-mixed concrete pressure feed car).

  Finally, as shown in FIG. 14, an elastic press-fitting member receiving portion 22 (second elastic press-fitting member) that is discharged from the distal end discharge port 3a of the pressure feed tube portion 3 and protrudes toward the discharge direction of the distal end discharge port 3a. The second elastic press-fitting member 6 received by the fence frame-like body receiving 6 is collected (then, the inside of each pipe line is appropriately cleaned with pressure-fed water or the like).

  As mentioned above, according to the residual concrete processing method of the concrete pressure feeder of a present Example, the concrete a remaining in the pipe line from the cylinder pipe 2A of the piston pump part 2 to the pressure feed pipe part 3 through the connection switching pipe 11 To the concrete a remaining in the hopper 1 and the concrete a remaining in the pressure feed pipe section 3 can be discharged (discharged) from the tip discharge port 3a of the pressure feed pipe section 3 to a desired discharge location. For example, a concrete pressure feeder After the placing work is completed, most of the residual concrete a in the machine body can be returned to the ready-mixed concrete car and reused without being discarded and wasted.

  Further, by using the residual concrete processing apparatus S, the excellent residual concrete processing method can be surely performed by a simple operation.

  Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

It is a description perspective view of the residual concrete processing apparatus S which concerns on a present Example. It is principal part explanatory plane sectional drawing of the concrete pressure feeder which concerns on a present Example. It is a description perspective view which shows the procedure of the residual concrete processing method which concerns on a present Example. It is a description perspective view which shows the procedure of the residual concrete processing method which concerns on a present Example. It is explanatory sectional drawing which shows the procedure of the residual concrete processing method which concerns on a present Example. It is explanatory sectional drawing which shows the procedure of the residual concrete processing method which concerns on a present Example. It is explanatory sectional drawing which shows the procedure of the residual concrete processing method which concerns on a present Example. It is a description perspective view which shows the procedure of the residual concrete processing method which concerns on a present Example. It is explanatory sectional drawing which shows the procedure of the residual concrete processing method which concerns on a present Example. It is a description perspective view which shows the procedure of the residual concrete processing method which concerns on a present Example. It is a description perspective view which shows the procedure of the residual concrete processing method which concerns on a present Example. It is a description perspective view which shows the procedure of the residual concrete processing method which concerns on a present Example. It is explanatory sectional drawing which shows the procedure of the residual concrete processing method which concerns on a present Example. It is a description perspective view which shows the procedure of the residual concrete processing method which concerns on a present Example. It is an explanation perspective view of a concrete pumping machine (concrete pump truck) concerning this example.

DESCRIPTION OF SYMBOLS 1 Hopper 1a Bottom part discharge port 2 Piston pump 2A Cylinder pipe 2B Piston 3 Pressure feed pipe part 3a End discharge port 3b Pipeline opening part 4 Elastic press-fitting member 5 Introducing pipe 6 Second elastic press-fitting member 7 Air hose 8 Connection flange 9 Rope body
10 Pipe open / close valve P Air supply string a Concrete k Detachment locking mechanism

Claims (5)

A hopper to which concrete is supplied, and a piston pump part that sucks the concrete in the hopper by a reciprocating motion of the piston in the cylinder pipe and pumps it to the pressure feeding pipe part. It was pumped into the pumping tube section by the piston pump, a configuration with residual concrete processing method of the concrete pumping machine to discharge from the tip end outlet provided at the tip of the pumping tube section, and stops the concrete pumping and Datsuhama the piston from the cylinder tube of the piston pump unit, the other end of the air hose having one end connected to and enables detachably attached to the cylinder tube to the proximal end of the cylinder tube to an air supply source is connected A connecting flange plate, and a rope from the base end of the cylinder pipe to the connecting flange plate The elastic press-fitting member to be connected via a press-fit is inserted and the rope body is inserted, and then an air hose is connected to the end of the cylinder pipe via the connecting flange disc body. through and be to圧動from the cylinder tube the elastic press-fitting member by supplying air pressure by the air supply from the end of the cylinder tube to the conduit intermediate position of the pumping tube section, at least the from the cylinder tube When the concrete up to the midway position of the pumping pipe part is pumped by the elastic press-fitting member, and when the elastic press-fitting member is pressed from the cylinder pipe to the midway position of the pipe line by the air pressure, the rope The body is configured to restrict the pressureable range of the elastic press-fitting member to a position in front of a pipe opening / closing valve provided in the middle of the pipe line of the pressure feed pipe part, and the pipe of the pressure feed pipe part After the elastic press-fitting member is moved to a position before the open / close valve, the pipe open / close valve is closed, and then the base of the elastic feed-in part of the pressure feed pipe portion is moved from the middle position where the elastic press-fitted member is pressed. By opening a predetermined position on the end side, a pipe opening opening communicating with the tip discharge port is opened in the pumping pipe section, and the elastic press-fitting member is taken out by pulling the rope body from the pumping pipe section. The concrete in the hopper recovered from the hopper bottom discharge port is introduced from the pipe opening to the pumping pipe, and the elastic press-fitting from the pipe opening to the pumping pipe. A member or a second elastic press-fitting member different from the elastic press-fitting member is press-fitted and inserted to open the pipe opening / closing valve, and then the elastic pressure is applied by the air pressure supplied from the pipe opening opening of the pumping pipe part. Pressure By discharging from the tip end outlet of the pumping tube section the input member or the second elastic press-fitting member is圧動, concrete of the pumping tube portion was pumped by the elastic press-fitting member or the second elastic press-fitting member A method for treating residual concrete in a concrete pressure feeder, characterized by discharging from the tip discharge port. Said rope body and said elastic press-fitting member is configured to coupled disengageably to via the detachable locking mechanism, opened the conduit opening opening in communication with the tip end outlet to the pumping tube section, the rope and hauled the body, wherein the desorbing said elastic press-fitting member said detachable locking mechanism takes out the elastic press-fitting member from disengagement locks with the rope body from the conduit opening opening of the pumping tube section The residual concrete processing method of the concrete pressure feeder of Claim 1 . After opening the pipe opening opening communicating with said tip end outlet of the pumping tube section, and communicated with the inlet to the conduit opening the opening of the pumping tube portion proximal inlet port of the inlet tube upwardly provided in the opening state, the concrete in the hopper recovered from the bottom outlet of the hopper, is introduced from the proximal end inlet of the inlet pipe into the pumping tube section, further wherein the proximal inlet of the inlet tube elastic press-fitting member or press-fitting the second elastic press-fitting member, the said resilient press-fitting member or the second elastic press-fitting member by an air pressure supplied from the inlet tube from the proximal end inlet of this inlet pipe is圧動to pumping tube section that discharges from the tip end outlet of the pumping tube section, wherein the elastic press-fitting member or the second elastic press-fitting member to pump the concrete of the introduction tube and the pumping tube portion wherein From the tip discharge port Residual concrete processing method of the concrete pumping machine according to any one of claims 1, 2, characterized in that the output. A hopper to which concrete is supplied, and a piston pump part that sucks the concrete in the hopper by a reciprocating motion of the piston in the cylinder pipe and pumps it to the pressure feeding pipe part. was pumped into the pumping tube section by the piston pump, a residual concrete processing apparatus of the concrete pumping machine configured to discharge from the tip end outlet provided at the tip of the pumping tube section, one end to an air supply source the other end of the air hose connected, the cylinder tube end removably attachable to a connecting flange disk body of the piston pump unit is provided, the elastic press-fitting member via a rope member for this connecting flange disk body This elastic press-fitting member is press-fitted into the piston pump part and the pressure-feed pipe part to make a resilient contact. Configured to, the concrete pumping stops, the then Datsuhama the piston from the cylinder tube of a piston pump, fitted the rope body with interpolated press-fitted to the elastic press-fitting member from the proximal end of the cylinder tube on the, connecting the air hose through the connecting flange disk body end of the cylinder tube, wherein the press-fitting member by an air pressure supplied to the cylinder tube from the air supply source through the air hose when to圧動to the pumping pipe section from the cylinder tube, wherein the圧動range of the elastic press-fitting member so as to regulate the up position before the conduit-opening-and-closing valve provided in the conduit intermediate position of the pumping tube section Residual concrete processing equipment for concrete pumping machine, characterized in that the length of the rope body is set. 5. The residual concrete processing apparatus for a concrete pressure feeder according to claim 4, wherein the rope body and the elastic press-fitting member are configured to be detachably connected via an attaching / detaching locking mechanism.

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