JPH0573281U - Squeeze roller support device for squeeze concrete pump - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to adjust the position of the squeeze roller only by operating the end of one shaft. [Structure] The squeeze roller 2 is attached to a rotor 3 using an eccentric shaft 2a. The lever 13 is attached to one end of the eccentric shaft 2a.
Overhang. A position adjuster is connected to the lever 13.
A scale 15 is provided near the lever 13. The eccentric shaft 2a is displaced by the rotation of the lever 13, and the position of the squeeze roller 2 is adjusted. Adjust the adjustment amount of the squeeze roller 2 to the lever 13
Read on the scale 15 pointed to by.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a squeeze roller support device for a squeeze type concrete pump in which a pumping tube is squeezed by a squeeze roller.

[0002]

[Prior Art]

 In the squeeze concrete pump, as shown in an example in FIG. 3, a rotor 3 formed by combining two arms 3a in parallel is rotatably incorporated in a pump casing 1 formed into a cylindrical shape, and the arm 3a has a rotation angle of 180 degrees. ° The squeeze roller 2 is rotatably attached to the opposite ends, and the squeeze roller 2 is revolved by rotating the rotor 3 about the axis O by driving the hydraulic motor 4. A cushion pad 5 is provided along the peripheral wall surface in the pump casing 1, and an intermediate portion 6a of a pumping tube 6 inserted in the pump casing 1 is arranged along the pad 5. At the same time, both ends of the pumping tube 6 are projected from the pump casing 1 to the outside so that one end serves as a suction port 7. By rotating the rotor 3 with the end serving as the discharge port 8, the intermediate portion 6a of the pumping tube 6 is continuously squeezed from a circular shape to a flat shape between the squeeze roller 2 and the pad 5, and the suction port 7 The concrete that has been sucked in is conveyed to the discharge port 8 side and discharged from the discharge port 8.

In the squeeze type concrete pump described above, when the pumping tube 6 or the pad 5 is worn due to long-term operation, the squeeze roller 2 causes insufficient squeezing force of the pumping tube 6, so that the squeezing force is reduced. Adjustments are needed to keep it constant.

Therefore, conventionally, the shaft 2a of the squeeze roller 2 is slidably supported on the long groove 9 provided on the arm 3a toward the outside, and the screw arranged on the shaft 2a in the direction of the long groove 9 is slidably supported. One end of the shaft 10 is engaged, and the intermediate portion of the screw shaft 10 is inserted into and supported by a fixed piece 11 on the arm 3a, and nuts 12 are screwed to both ends of the fixed piece 11 to fix the nut 12. By moving the screw shaft 10 by tightening adjustment, the position of the squeeze roller 2 can be adjusted by sliding the shaft 2a along the long groove 9 (Japanese Patent Publication No. 58-21116).

[0005]

[Problems to be solved by the device]

 However, in the above-mentioned conventional method, when the squeeze roller 2 is moved so as to keep the drawing force by the squeeze roller 2 constant, adjustment is made so that both ends of the shaft 2a are moved by the same amount so that the squeeze roller 2 does not tilt. Had to be done and the adjustment was very cumbersome.

Therefore, the present invention is intended to provide a squeeze roller support device for a squeeze type concrete pump in which the position of the squeeze roller can be adjusted by operating one end of the shaft without inclining the squeeze roller.

[0007]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention supports a rotor rotatably incorporated in a tubular pump casing, a squeeze roller rotatably assembled on an eccentric shaft, through the above eccentric shaft, A lever is extended to one end of the eccentric shaft, and a position adjusting tool is connected to the lever.

[0008]

[Action]

 When the lever is rotated by operating the position adjusting tool, the eccentric shaft is eccentric, so that the position of the squeeze roller is adjusted. In this case, since the squeeze roller is displaced based on the eccentric amount of the eccentric shaft, the squeeze roller can be operated without tilting by one end side, and the adjustment amount can be confirmed by the lever position. If a scale for indicating the amount of eccentricity is provided near the position, it can be easily confirmed.

[0009]

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

FIGS. 1 and 2 show an embodiment of the present invention, and like the one shown in FIG. 3, a squeeze roller for giving a squeezing action to a pumping tube 6 in a cylindrical pump casing 1. In a squeeze-type concrete pump in which a rotor 3 provided with 2 is rotatably incorporated, the shaft of the squeeze roller 2 is an eccentric shaft 2b, and both ends of the eccentric shaft 2b are supported between the arms 3a of the rotor 3. At the same time, the squeeze roller 2 is allowed to rotate on the eccentric shaft 2b, and a lever 13 is extended to one end of the eccentric shaft 2b so as to be parallel to the arm 3a, and the lever 13 is rotated. The eccentric shaft 2b is displaced by a dynamic operation so that the position of the squeeze roller 2 can be adjusted. A turnbuckle 14 is interposed as an adjusting tool so that the lever 13 can be rotated and positioned by operating the turnbuckle 14, and the tip of the lever 13 on the arm 3a can be rotated. A scale 15 for indicating the amount of eccentricity of the eccentric shaft 2a is provided at the moving locus position so that the scale 15 can be read by the tip of the lever 13. In FIG. 1, the same parts as those in FIG. 3 are designated by the same reference numerals.

When it is necessary to adjust the position of the squeeze roller 2, the turnbuckle 14 is operated. That is, when the turnbuckle 14 is operated, the lever 14 is rotated to rotate the eccentric shaft 2b integrally therewith, so that the position of the squeeze roller 2 is adjusted based on the amount of eccentricity of the eccentric shaft 2b. .. At this time, the adjustment amount of the squeeze roller 2 can be grasped by reading the scale 15 indexed by the tip of the lever 13. Therefore, the adjustment work can be easily performed.

In the above description, since the position adjustment of the squeeze roller 2 is based on the rotational displacement of the eccentric shaft 2b, it can be performed by the operation on one end side, and at this time, there is no concern that the squeeze roller 2 tilts.

It should be noted that the present invention is not limited to the above embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[0014]

[Effect of the device]

 As described above, according to the squeeze roller supporting device for a squeeze type concrete pump of the present invention, an eccentric shaft is used as the shaft of the squeeze roller, and a lever to which a position adjusting tool is connected is extended to one end of the eccentric shaft. Since the lever is rotated by the position adjuster to displace the eccentric shaft, the position of the squeeze roller can be adjusted without tilting by operating one end side, and the lever position can be read on the scale. By doing so, the amount of adjustment can be grasped, so that it is possible to perform adjustment work easily, which is an excellent effect.

[Brief description of drawings]

FIG. 1 is a schematic view of a squeeze type concrete pump showing an embodiment of a squeeze roller supporting device of the present invention.

FIG. 2 is an enlarged view taken along line II-II of FIG.

FIG. 3 is a schematic view showing an example of a squeeze type concrete pump.

[Explanation of symbols]

 1 Pump casing 2 Rotor 2b Eccentric shaft 13 Lever 14 Turnbuckle (position adjustment tool) 15 Scale

Claims (1)

[Scope of utility model registration request] 1. A squeeze roller rotatably assembled on an eccentric shaft is supported by a rotor rotatably installed in a tubular pump casing, and the squeeze roller is supported on one end of the eccentric shaft. A squeeze roller support device for a squeeze type concrete pump, characterized in that a lever is extended and a position adjusting tool is connected to the lever.