JPH0874751A - Hopper installation for squeezing type concrete pump - Google Patents

Abstract

PURPOSE: To facilitate the replacement of a pumping tube to be housed in a pump main body at a place located down below in such a way as to be simply accessed from the lower section of the pump main body. CONSTITUTION: In the squeezing type concrete pump which comprises a hopper H disposed behind a pump main body P wherein the hopper H feeds ready- mixed concrete to the pump main body P, a space above an extended line from the entrance 2 of the pump main body P is released with the hopper H moved in parallel afterward and upward, and it is made possible that a pumping tube is replaced through the lower section of the pump main body P at a place located down below the hopper H.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hopper device for supplying ready-mixed concrete to a pump body in a squeeze type concrete pump.

[0002]

2. Description of the Related Art Conventionally, in a squeezing type concrete pump mounted on a vehicle or the like, a closed cylindrical pump main body is mounted on a support frame, and a hopper is provided side by side on the inlet / outlet side of the pump main body. It is configured to feed the poured ready-mixed concrete to the pump body (see Japanese Patent Publication No. 58-50891).

[0003]

Therefore, the hopper is
A hopper tank having a relatively large capacity is provided so that a large amount of ready-mixed concrete can be added and stored therein, and it is generally provided facing the lower part of the pump body.

By the way, in such a squeezing pump, since the pumping tube housed in the pump body is made of an elastic material such as rubber and is a consumable item,
It is necessary to replace this regularly, and the replacement work is
Conventionally, since the hopper is an obstacle, an operator manually performs the operation from above the hopper.

However, since the pumping tube is long and heavy, the replacement work is a heavy labor for the worker, and there is a problem that the tendency becomes even greater as the pump becomes larger.

Further, the pumping tube may rupture in a state where the fresh concrete is filled therein, and in such a case, pressure of the fresh concrete in the hopper,
The vacuum pressure in the pump case may cause fresh concrete in the hopper to enter the pump case through the ruptured portion of the pumping tube, and even in such a case, cleaning the pump case is a heavy work for workers. is there.

The present invention has been made in view of the above circumstances, and the pumping tube can be easily replaced, and fresh concrete can be prevented from entering the pump case from the hopper. It is an object of the present invention to provide a novel hopper device for a squeezing concrete pump, which is designed to greatly improve efficiency.

[0008]

In order to achieve the above object, the invention according to claim 1 is characterized in that a pump main body and a hopper for supplying fresh concrete to the pump main body are provided on a support frame. In the squeezing type concrete pumps arranged in parallel, a moving means for moving the hopper with respect to the pump main body is provided so as to open a front extension line of the inlet of the pump main body.

In order to achieve the above object, the invention according to claim 2 is characterized in that a pump main body and a hopper for supplying ready-mixed concrete to the pump main body are juxtaposed on a support frame. The squeeze type concrete pump is provided with an opening / closing means for opening a discharge port communicating with the hopper discharge pipe on the bottom surface of the hopper tank of the hopper and for opening / closing the discharge port.

Further, in order to achieve the above object, a feature of the invention of claim 3 is that a pump main body and a hopper for supplying fresh concrete to the pump main body are juxtaposed on a support frame. In the squeeze-type concrete pump, a moving means for moving the hopper with respect to the pump body is provided so as to open the front extension line of the inlet of the pump body, and the bottom surface of the hopper tank of the hopper is connected to the hopper discharge pipe. An opening means is provided for opening and closing the outlet.

[0011]

According to the first aspect of the present invention, by moving the hopper by the parallel moving means, it is possible to open the front extension line of the inlet of the pump body, and thereby the pumping inserted into the pump body. The tube replacement work can be easily and easily performed below the hopper, and as a result, the pump work efficiency can be greatly improved.

According to the second aspect of the present invention, the discharge port that connects the hopper tank and the hopper discharge pipe can be opened / closed by the opening / closing means such as the opening / closing valve, and the pumping tube in the pump body is ruptured. In addition, by closing the discharge port, fresh concrete in the hopper is prevented from entering the pump body, cleaning inside the pump body is facilitated, and as a result, pump work efficiency can be significantly improved.

Further, according to the third aspect of the present invention, by moving the hopper by the moving means, it is possible to open the inlet forward extension line of the pump main body, whereby the pumping inserted into the pump main body. The tube replacement work can be performed easily and easily under the hopper, and the discharge port that connects the hopper tank and the hopper discharge pipe can be opened and closed by the opening / closing means such as the opening / closing valve. By closing the discharge port at the time of rupture or the like, fresh concrete in the hopper is prevented from entering the pump main body, the inside of the pump main body can be easily cleaned, and as a result, the pump work efficiency can be significantly improved. .

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

First, a first embodiment in which the present invention is applied to a concrete pump car will be described with reference to FIGS.

FIG. 1 is a side view of a partially broken rear part of a concrete pump vehicle equipped with the device of the present invention, and FIG. 2 shows a dashed-dotted line portion taken along the arrow 2 in FIG. 1 (along line 2-2 in FIG. 4). 2 is a side view similar to FIG. 2 when the hopper is moved in parallel, FIG. 4 is a rear view of the hopper taken along line 4-4 of FIG. 2, and FIG. It is a partial expanded sectional view which follows the 5 line.

In FIG. 1, a pump main body P is integrally mounted on a rear portion of a body frame F of a concrete pump car, and an extension frame, that is, a support frame Fe extending rearward from a rear end of the body frame F is provided. Hopper H
However, as described in detail later, it is mounted so that it can be translated back and forth and vertically.

The pump main body P is provided with a closed cylindrical pump case 1, and an inlet 2 is opened at the lower rear side and an outlet 3 is opened at the upper rear side. An elastic pad 4 made of an elastic material such as rubber is integrally attached to the inner peripheral surface of the pump case 1, and a pumping tube 5 made of an elastic material such as rubber is formed in a U shape so as to extend along the elastic pad 4. The suction end and the discharge end of the pumping tube 5 are extended to the outside through the inlet 2 and the outlet 3, and the suction end is connected to the hopper discharge pipe 13 of the hopper H. The discharge end is a joint 6
Is connected to the concrete transfer pipe 7 via.

A rotor 8 is rotatably supported in the pump case 1, and a pair of rollers 9 are rotatably supported on the outer peripheral portion of the rotor 8 on the diameter line. The pair of rollers 9 are pressed against the pumping tube 5, and when the rotor 8 rotates in one direction (clockwise rotation of FIG. 1), the roller 9 presses the pumping tube 5 while squeezing the pumping tube 5 so that the concrete in the hopper H is concreted. It can be pumped to the transfer pipe 7.

Since the internal structure of the pump main body P and the mounting structure of the pump main body P to the vehicle body frame F are the same as the conventional ones, detailed description thereof will be omitted.

2 to 4, an extension frame Fe, which is integrally extended rearward from the rear end of the vehicle body frame F, includes a pair of hollow rectangular tubular left and right guide frames 10. The hopper H is arranged above. The hopper H is supported by the left and right guide frames 10 via a parallel moving means T ₁ which will be described in detail later so that the hopper H can move in parallel in the vertical and forward and backward directions.

The hopper H comprises a hopper tank 12 formed in a bucket shape and a hopper discharge pipe 13 extending in the lower front-rear direction of the hopper, which is integrally formed.
The lateral width of 2 is wider than the lateral width of the pump body P, and the front wall thereof faces the pump body P. The inside of the hopper tank 12 is communicated with the inside of the hopper discharge pipe 13 through a discharge port 14 (FIG. 5) opened on the bottom surface thereof, and the ready-mixed concrete put into the hopper tank 12 passes through the discharge port 14 and the hopper discharge pipe 13 is discharged. Will be sent to. The hopper discharge pipe 13 extends in the front-rear direction, has a connection end 135 ₁ to the pumping tube 5 in the pump body P at its front end, and can open and close the discharge port 14 at its rear part. The means, that is, the on-off valve V is rotatably inserted from the rear end of the opening. This on-off valve V
5 comprises a base portion 15 having a male taper surface 16 on the outer periphery as clearly shown in FIG. 5, and a valve body portion 17 formed into a notched semi-cylindrical shape by cutting the inner surface into an oblique arc shape.
A tongue piece 19 having an insertion hole 18 is integrally formed on the rear end surface of the protrusion 5. The on-off valve V is a hopper discharge pipe 13
The male taper surface 16 is fitted into the female taper surface 20 at the outer end of the hopper discharge pipe 13 so that the male taper surface 16 can be rotated from the rear end of the opening. Then, by inserting an appropriate operation rod 21 into the externally exposed insertion hole 18 and controlling the opening / closing valve V to rotate about 180 ° about its longitudinal axis l-l by about 180 °, as shown by the solid line in FIG. The outlet 14 can be opened, and the outlet 14 can be closed as shown in FIG. A victor joint 23 is detachably fixed to the rear end of the hopper discharge pipe 13, whereby the on-off valve V can be fixed at the open position or the closed position. The opening / closing control of the opening / closing valve V is performed after the victor joint 23 is removed.

Next, referring to FIGS. 2 to 4, a parallel moving means T ₁ for moving the hopper H in parallel to the front and rear and up and down.
Will be described.

A pair of front brackets 25 are fixed to the left and right front portions of the bottom wall of the hopper tank 12, and a pair of rear brackets 26 are also fixed to the left and right rear portions of the bottom wall of the hopper tank 12. 25 and 26 are crank-shaped first and second links 2 forming parallel links.
The upper ends of 7, 28 are pin-connected 29, 30. The rolling rollers 31,
32 is rotatably supported, and these rolling rollers 31, 32 are rollable on a guide rail 33 integrally provided in the left and right guide frames 10 over their entire lengths in the front-rear direction. Is engaged with. Front and rear stoppers 34 and 35 are fixed to the front and rear of the middle portion of the left and right guide frames 10, respectively.
Numerals 4 and 35 collide with the rolling rollers 31 and 32 to regulate the movement of the first and second links 27 and 28. Further, at the lower ends of the first and second links 27, 28, a connecting rod 36 provided in the guide frame 10 is provided.
Both ends of are connected with pins 38, 39.

Support frame, namely the extension frame F
At the front portions of the left and right guide frames 10 that constitute e, the base ends of the telescopic cylinders 40 made of hydraulic cylinders and the like are pin-connected 41. The telescopic cylinder 40 extends rearward in the guide frame 10, and the lower end of the second link is pin-connected 42 to the tip thereof.

Thus, the first and second links 27, 28,
The front and rear stoppers 34 and 35 and the telescopic cylinder 40 constitute a parallel moving means T ₁ of the hopper H, and as will be described later in detail, the telescopic cylinder 40 is actuated by the telescopic operation to move the hopper H forward and backward and up and down. It can be moved in parallel.

At the rear lower end of the pump body P, an opening / closing lid 44
A drain port 43 that is opened and closed is provided, and water after cleaning the inside of the pump body P is discharged through the drain port 43. Further, in the hopper tank 12, an agitating and feeding device for ready-mixed concrete is housed as usual, and the reference numeral 4
Reference numeral 5 is the stirring drive shaft.

Next, the operation of the first embodiment will be described.

As shown by the solid line in FIG. 2, when the hopper H is connected to the pump body P and the concrete pump is in use, the telescopic cylinder 40 is in the contracted state,
The first and second links 27 and 28 are laid down, and the hopper H is fixedly installed on the extension frame Fe. Then, the ready-mixed concrete put into the hopper tank H is fed to the pump body P.

By the way, when it is necessary to replace the pumping tube 5 in the pump body P due to deterioration, when the telescopic cylinder 40 is extended, the first and second links 27 and 28 have intermediate portions thereof. When the rolling rollers 31 and 32 pivotally supported on the guide rail 33 roll on the guide rail 33, they are translated rearward as shown by the chain line in FIG. As a result, the hopper discharge pipe 13 of the hopper H is connected to the pumping tube 5
Can be extracted more. Subsequent telescopic cylinder 40
3, the rolling rollers 31 and 32 come into abutment with the front and rear stoppers 34 and 35, as shown in the solid line in FIG.
7, 28 rotate upright around the support points of the rolling rollers 31, 32 (counterclockwise in FIG. 2), and these links 27, 28
The hopper H, which is supported by, is translated upward and the lower part of the pump main body P, especially the front extension line of its inlet 2, is opened. As a result, below the hopper H, the pump body P
From the lower part of the above, an operator can easily replace the pumping tube 5 through the inlet 2.

When the pumping tube in the pump body P is ruptured while the concrete pump is in use, the victor joint 23 at the rear end of the hopper discharge pipe 13 is removed, and then the opening / closing valve V constituting the opening / closing means. When the operation rod 21 is inserted into the insertion hole 18 of FIG. 1 and is rotated about 180 degrees around the axis l-l, the discharge port 14 on the bottom surface of the hopper tank 12 is opened and closed by the opening / closing valve V as shown in FIG. It is closed by the valve body 17, and the feeding of the green concrete in the hopper H to the pump body P is blocked.

Next, a second embodiment of the present invention will be described.

FIG. 6 is a rear side view of the concrete pump truck showing the second embodiment of the present invention, and FIG. 7 is the same side view as that of FIG. 6 when the hopper is translated, which is the same member as the first embodiment. Are denoted by the same reference numerals.

The structure of the parallel moving means T ₂ of the hopper H of the second embodiment is different from that of the first embodiment. The hopper H is slidable rearward and supported so as to be able to move up and down on the left and right guide frames 210 forming the extension frame Fe of the vehicle body frame F via a pair of left and right cross links Lc. Each cross link Lc is formed by connecting the intermediate portions of two straight links 227 and 228 rotatably to each other by a connecting pin 239, and the upper end of one link 227 is the bottom of the hopper H. The front brackets 225 fixed to the left and right sides of the wall are rotatably connected with pins 2
And the roller 2 is attached to the upper end of the other link 228.
A roller 30 is rotatably supported, and the roller 230 is engaged with a guide groove 226 ₁ formed in a rear bracket 226 fixed to the left and right rear portions of the bottom wall of the hopper H so as to be movable back and forth. Rolling rollers 232 and 231 are rotatably supported at the lower ends of both links 227 and 228, respectively, and these rolling rollers 231 and 232 are
A guide rail 233 formed on the guide frame Fe is movably engaged with the guide rail 233 with a front-rear interval. Further, a stopper 234 is fixed to an intermediate portion of the guide frame 233, and when the other link 228 moves rearward, the stopper 234 abuts the rolling roller 231 at the lower end thereof to restrict the rearward movement thereof.

At the front parts of the left and right guide frames 210 constituting the extension frame Fe, the base ends of the telescopic cylinders 240 such as hydraulic cylinders are pin-connected 241 and the ends thereof are two of the cross links Lc. Link 227,2
A pin connection 242 is connected to the rotation connection part 28.

Next, the operation of the second embodiment will be described.

When the hopper H is connected to the pump body and is in use, the telescopic cylinder 240 is contracted, the cross link Lc is folded and the hopper H constitutes an extension frame Fe, as shown by the solid line in FIG. Yes, it is held in place on the left and right guide frames 210. Then, the ready-mixed concrete put into the hopper H is fed from the hopper discharge pipe 13 to the pumping tube 5 of the pump body P.

By the way, when the pumping tube 5 in the pump main body P is deteriorated and replaced, when the telescopic cylinder 240 is extended, the cross link Lc moves backward on the guide rails 233 of the left and right guide frames 210. The hopper H slides, and the hopper H moves in parallel rearward as shown by the chain line in FIG. As a result, the hopper discharge pipe 1 of the hopper H is
3 can be pulled out from the pumping tube 5.
According to the subsequent extension operation of the telescopic cylinder 240, the rolling roller 231 at the lower end of the other link 228 causes the rolling roller 231 to stop.
4, the two links 227, 228 forming the cross link Lc are extended upright as shown by the solid line in FIG. 7, and the hopper H supported by the cross link Lc moves upward, The lower part of the pump body P, especially the front extension line of the inlet 2 thereof, is opened. Accordingly, below the hopper H, an operator can replace the pumping tube 5 from the lower portion of the pump body P through the inlet 2.

Next, a third embodiment of the present invention will be described.

FIG. 8 is a rear side view of the concrete pump truck showing the third embodiment of the present invention. The same members as those in the first embodiment are designated by the same reference numerals.

The third embodiment differs from the first embodiment in the structure of the parallel moving means T ₃ of the hopper H. An extension frame Fe having substantially the same level as the extension frame Fe is integrally extended rearward at the rear end of the body frame F. The inlet 2 opened at the lower rear end of the pump body P is the extension frame Fe.
The hopper discharge pipe 13 of the hopper H, which is located below and is connected to the pump body P and in the use position, is also below the extension frame Fe. Front and rear support frames 325 and 326 are fixed to the front and rear portions on both sides of the hopper tank 12, respectively, and the hopper H is connected to the extension frame Fe via these support frames 325 and 326.
It is supported so that it can move back and forth. The front and rear guide rollers 331 and 332 are pivotally supported on the rear surfaces of the front and rear support frames 325 and 326 via brackets, respectively, and constitute the extension frame Fe. Front and rear guide rollers 33
Front and rear guide rails 346, 34 facing 1,332
7 are fixed at intervals in the front-rear direction. The front and rear guide rails 346 and 347 have the same shape, and are composed of arc-shaped guide surfaces 348 and 349 that are inclined rearward and upward, and hook-shaped stoppers 350 and 351 that are continuous to the rear ends. There is. On the front surfaces of the left and right front support frames 325, the tip ends of telescopic cylinders 340 such as hydraulic cylinders whose base ends are axially supported by the front portions of the extension frames Fe are pin-connected 342. Three
According to the extension operation of 40, the front and rear guide rollers 331,
The 332 can be engaged with the guide surfaces 348 and 349 of the front and rear guide rails 346 and 347, and the hopper H can be translated rearward and upward as described later.

Next, the operation of the third embodiment will be described.

When the hopper H is connected to the pump body P and is in use, the telescopic cylinder 340 is contracted, and the front and rear support frames 325 and 326 of the hopper H are the inner surfaces of the left and right guide frames 310 of the extension frame Fe. Supported by. Then, the ready-mixed concrete put into the hopper H is fed from the hopper discharge pipe 13 to the pumping tube 5 of the pump body P.

When replacing the pumping tube 5 in the pump body P due to deterioration, the telescopic cylinder 3
When 40 is extended, the front and rear support frames 325, 3
Reference numeral 26 slides the left and right guide frames 310 rearward to move the hopper H in parallel rearward. As a result, the hopper discharge pipe 13 of the hopper H can be pulled out from the pumping tube 5. According to the subsequent extension operation of the telescopic cylinder 340, the front and rear guide rollers 331, 332 are
Is the guide surface 34 of the front and rear guide rails 346 and 347.
Roll over 8,349. As a result, the hopper H is translated rearward and upward, and when the front and rear guide rollers 331 and 332 are engaged with the stoppers 350 and 351 as shown in FIG. It is held and the lower part of the pump body P, especially on the front extension line of its inlet 2, is opened. As a result, below the hopper H,
From the lower part of the pump body P, an operator can replace the pumping tube 5 through the inlet 2.

Next, a fourth embodiment of the present invention will be described.

FIG. 8 is a rear side view of the concrete pump car showing the fourth embodiment of the present invention. The same members as those in the first embodiment are designated by the same reference numerals. The fourth embodiment is different from that structure translation means T ₄ of the hopper H is the first embodiment, and can be moved in parallel in particular the hopper H in the horizontal direction.

The front side of the hopper H on the extension frame Fe of the vehicle body frame F is supported by a substantially vertical turning shaft 452 so as to be horizontally turnable.
Bracket 453 integrally projecting from the extension frame Fe
One end of a swing cylinder 440 formed of a hydraulic cylinder or the like is connected to the pin by a pin connection 441.
0 extends across the front of the hopper H and the other end
A pin connection 442 is connected to a revolving arm 454 integrally provided on one side of the front surface of the hopper tank 12. Further, a lock arm 455 is rotatably supported by the rear edge of the extension frame Fe, while a locking piece 456 of the lock arm 455 that can be disengaged is fixed to one end of the front surface of the hopper H. , The hopper H is locked in the use position by engaging and fixing the lock arm 455 to the locking piece 456 as shown by the solid line.

Next, the operation of the fourth embodiment will be described.

When the hopper H is connected to the pump body P and is in a used state, the revolving cylinder 440 is extended, and the lock arm 455 is fixedly engaged with the locking piece 456 so that the hopper H is in the used position. Be tied up with. Then, the concrete is poured into the hopper H and the raw concrete is discharged into the hopper discharge pipe 13
From the pump body P to the pumping tube.

When it is necessary to replace the pumping tube in the pump body P due to deterioration, the lock arm 455 is removed from the locking piece 456, and then the revolving cylinder 4 is moved.
When the hopper H is contracted, the hopper H can be swung about the swivel shaft 452 in a substantially horizontal direction by about 90 ° and can be moved substantially horizontally to one side of the extension frame Fe as shown by a chain line in FIG. As a result, the hopper discharge pipe 13 is pulled out from the pumping tube and the lower part of the pump body P, especially on the front extension line of its inlet, is opened, and below the hopper H, from the lower part of the pump body P through the inlet 2 by the operator. The pumping tube can be replaced.

In FIG. 9, M is the hopper tank 1
It is an agitating and feeding device for ready-mixed concrete provided in 2.

Although the four embodiments of the present invention have been described above, the present invention is not limited to these embodiments and various embodiments can be made within the scope of the present invention. For example, in the above-mentioned embodiment, the case where the device of the present invention is applied to the concrete pump truck has been described, but it goes without saying that this can be applied to other pump devices as well, and in the above-mentioned embodiment, the hopper is moved in parallel, Although a cylinder is used, other driving means may be used instead of this, and other known parallel moving means may be adopted instead of the parallel moving means of the above-mentioned embodiment. Further, as the opening / closing means for opening / closing the discharge port of the hopper tank, other known means may be used instead of the opening / closing valve of the above-mentioned embodiment.

[0053]

As described above, according to the invention described in claim 1, in the squeeze type concrete pump, the movement for moving the hopper with respect to the pump body is opened so as to open on the front extension line of the pump body. Since we have provided a means,
It is possible to easily and easily replace the pumping tube in the pump body below the hopper, without disturbing the hopper from the lower part of the pump body, and as a result, to greatly improve the pump work efficiency. You can

According to the second aspect of the present invention, in the squeeze-type concrete pump, a discharge port communicating with the hopper discharge pipe is opened on the bottom surface of the hopper tank of the hopper,
Since the opening / closing means for opening / closing the discharge port is provided, the discharge port of the hopper tank can be closed when the pumping tube is ruptured, etc., and it is possible to prevent the raw concrete in the hopper tank from entering the pump body in advance. As a result, the pump work efficiency can be significantly improved.

According to the third aspect of the present invention, in the squeeze type concrete pump, a moving means for moving the hopper with respect to the pump body is provided so as to open the extension line on the front side of the inlet of the pump body. Since the bottom of the hopper tank of the hopper is provided with an opening / closing means for opening a discharge port communicating with the hopper discharge pipe and opening / closing the discharge port, it is possible to replace the pumping tube in the pump body with the lower part of the pump body under the hopper. Can be easily and easily carried out without being disturbed by the hopper, and the discharge port of the hopper tank can be closed when the pumping tube ruptures, etc., so that the ready-mixed concrete in the hopper tank will not enter the pump body. Therefore, the pump work efficiency can be significantly improved.

[Brief description of drawings]

FIG. 1 shows a concrete pump car equipped with the device of the present invention,
Partially broken rear side view

FIG. 2 is an enlarged side view of a broken view of a main part of a one-dot chain line view (along line 2-2 in FIG. 4) of FIG.

FIG. 3 is the same side view as FIG. 2 when the hopper is translated.

4 is a rear view of the hopper taken along line 4-4 of FIG.

5 is a partially enlarged sectional view taken along line 5-5 of FIG.

FIG. 6 is a rear side view of the concrete pump truck showing the second embodiment of the present invention.

7 is the same side view as FIG. 6 when the hopper is translated.

FIG. 8 is a rear side view of the concrete pump truck showing the third embodiment of the present invention.

FIG. 9 is a rear plan view of the concrete pump truck showing the fourth embodiment of the present invention.

[Explanation of symbols]

2 ... Inlet 12 ... Hopper tank 13 ... Hopper discharge pipe 14 ... Discharge port Fe ... Support frame (extension frame) H ...・ Hopper P ・ ・ ・ ・ Pump body T ₁・ ・ ・ Movement means T ₂・ ・ ・ Movement means T ₃・ ・ ・ Movement means T ₄・ ・ ・ Movement means V ・ ・.... Opening / closing means (open / close valve)

Claims (3)

[Claims] 1. A pump body (P) and a hopper (H) for supplying ready-mixed concrete to the pump body (P).
In a squeeze-type concrete pump in which and are arranged side by side on a support frame (Fe), the hopper (H) is connected to the pump body (P) so as to open the front extension line of the inlet (2) of the pump body (P). ) Moving means (T ₁ , T ₂ , T ₃ , T ₄ )
A hopper device for a squeezing-type concrete pump, characterized in that 2. A pump body (P) and a hopper (H) for supplying ready-mixed concrete to the pump body (P).
In a squeeze-type concrete pump in which and are arranged side by side on a support frame (Fe), a discharge port (14) communicating with a hopper discharge pipe (13) is opened on the bottom surface of the hopper tank (12) of the hopper (H). Then
A hopper device for a squeezing concrete pump, comprising an opening / closing means (V) for opening / closing the discharge port (14). 3. A pump body (P) and a hopper (H) for supplying ready-mixed concrete to the pump body (P).
In a squeeze-type concrete pump in which and are arranged side by side on a support frame (Fe), the hopper (H) is connected to the pump body (P) so as to open the front extension line of the inlet (2) of the pump body (P). ) Moving means (T ₁ , T ₂ , T ₃ , T ₄ )
An opening / closing means (V) is provided for opening a discharge port (14) communicating with the hopper discharge pipe (13) on the bottom surface of the hopper tank (12) of the hopper (H), and opening and closing the discharge port (14).
A hopper device for a squeezing-type concrete pump, comprising: