CN216407976U

CN216407976U - Concrete conveying pipe for concrete pump truck

Info

Publication number: CN216407976U
Application number: CN202121952330.2U
Authority: CN
Inventors: 周杰
Original assignee: Wuxi Koncrete Pipe Technology Co ltd
Current assignee: Wuxi Koncrete Pipe Technology Co ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2022-04-29
Anticipated expiration: 2031-08-19

Abstract

The utility model provides a concrete conveying pipe for a concrete pump truck, which comprises a multi-section sequentially spliced conveying pipe body, wherein the conveying pipe body comprises a pipe body and two pipe joints, one pipe joint is connected with one axial end of the pipe body, the other pipe joint is connected with the other axial end of the pipe body, and the pipe joint in one section of conveying pipe body can be in sealing connection with the pipe joint in the other section of conveying pipe body; the pipe body comprises an outer layer pipe and a centrifugal casting layer, the outer layer pipe is used for improving the impact resistance of the outer surface of the pipe body, and the centrifugal casting layer is arranged on the inner surface of the outer layer pipe and used for improving the wear resistance of the pipe body; the thickness of the outer layer tube is 1.5mm-3 mm. Metallurgical complex improvement body uniformity, wearability and impact resistance of outer layer pipe in this application, cooperation welded coupling improve this body coupling's of conveyer pipe convenience, and sealing connection between the coupling reduces the probability that the concrete leaked.

Description

Concrete conveying pipe for concrete pump truck

Technical Field

The utility model relates to a concrete conveying pipe, in particular to a concrete conveying pipe for a concrete pump truck.

Background

Concrete pump trucks are mechanical devices that utilize pressure to continuously transport concrete along a pipeline.

The existing double-layer concrete conveying pipe adopts a hot rolling mode, and an inner layer pipe and an outer layer pipe made of wear-resistant materials are compounded together; the inlayer pipe is breakable easily to drop among the present double-deck concrete conveying pipe, and impact resistance is poor, and when concrete pump truck's cantilever crane rose, scaffold or building were strikeed easily to the outer pipe wall of concrete conveying pipe, because lack between inlayer pipe and the outer pipe and be connected, can lead to the inlayer pipe of concrete conveying pipe to break in advance and drop, life is low.

As the building floor height increases, the arm of the concrete pump truck is lengthened, so that the length of the concrete conveying pipe is longer and longer, and due to the improvement of the load limiting requirement of the concrete pump truck, the optimal choice is to reduce the wall thickness of the concrete conveying pipe to control the weight.

Therefore, a concrete conveying pipe is needed, which is solid and wear-resistant, and can meet the length requirement and the weight requirement of the concrete pump truck.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides the concrete conveying pipe for the concrete pump truck, the consistency, the wear resistance and the impact resistance of the pipe are improved by the metallurgical compounding of the inner layer pipe and the outer layer pipe, the pipe body wall is thin and light, the pipe body is welded with the pipe joint to form a complete conveying pipe body, and the sealing property during installation is improved. The technical scheme adopted by the utility model is as follows:

a concrete conveying pipe for a concrete pump truck comprises a conveying pipe body formed by sequentially splicing a plurality of sections, wherein the conveying pipe body comprises a pipe body and two pipe joints, one pipe joint is connected with one axial end of the pipe body, the other pipe joint is connected with the other axial end of the pipe body, and the pipe joint in one section of conveying pipe body can be in sealing connection with the pipe joint in the other section of conveying pipe body;

the pipe body comprises an outer layer pipe and a centrifugal casting layer, the outer layer pipe is used for improving the impact resistance of the outer surface of the pipe body, and the centrifugal casting layer is arranged on the inner surface of the outer layer pipe and used for improving the wear resistance of the pipe body;

the thickness of the outer layer tube is 1.5mm-3 mm.

Further, the centrifugal casting layer is made of high-carbon steel or spring steel.

Further, the thickness of the centrifugal casting layer is 2mm-3 mm.

Further, the thickness of the outer layer pipe is 2mm, and the thickness of the centrifugal casting layer is 2 mm.

Further, it is adjacent be connected through the clamp between the coupling, the coupling surface sets up the draw-in groove that can the card go into the clamp.

Further, the clamp internal surface is provided with the ring type sealing washer.

The utility model has the advantages that: the weight of double-deck metal composite steel pipe is controlled to the thickness on this application control outer layer pipe and centrifugal casting layer, utilizes centrifugal casting layer and the metallurgical complex improvement body uniformity of outer layer pipe, when receiving external force impact, the inner tube damage probability greatly reduced that centrifugal casting layer made, and clamp sealing connection, the probability that greatly reduced concrete leaked is passed through at the conveyer pipe body both ends that the cooperation coupling is constituteed.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the delivery pipe body of the present invention.

In the figure: 1-pipe body, 2-pipe joint, 3-hoop, 101-outer layer pipe, 102-centrifugal casting layer and 201-clamping groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to the attached drawings 1-2, the utility model provides a concrete conveying pipe for a concrete pump truck, which comprises a multi-section sequentially spliced conveying pipe body, wherein the conveying pipe body comprises a pipe body 1 and two pipe joints 2, one pipe joint 2 is connected with one axial end of the pipe body, the other pipe joint 2 is connected with the other axial end of the pipe body 1, and the pipe joint 2 in one section of the conveying pipe body can be hermetically connected with the pipe joint 2 in the other section of the conveying pipe body;

the pipe body 1 is a double-layer metal metallurgy composite steel pipe and comprises an outer layer pipe 101 and a centrifugal casting layer 102, the outer layer pipe 101 is used for improving the impact resistance of the outer surface of the pipe body 1, and the centrifugal casting layer 102 is arranged on the inner surface of the outer layer pipe 101 and used for improving the wear resistance of the pipe body 1; the centrifugal casting layer 102 is centrifugally cast to the inner surface of the outer layer pipe 101, the centrifugal casting layer and the outer layer pipe are metallurgically combined to prepare the double-layer metal metallurgical composite steel pipe, the impact resistance and the consistency of the pipe body 1 can be improved, the breakage rate of the centrifugal casting layer 102 when the pipe body is impacted by external force is reduced, and the problem that the centrifugal casting layer 102 is broken in advance when the conveying pipe body is transported or lifted to impact a building or a scaffold, so that the conveying pipe body is damaged in advance is solved.

The thickness of the outer layer pipe 101 is 1.5mm-3mm, and the thickness of the centrifugal casting layer 102 is not less than that of the outer layer pipe 101.

Through the thickness of adjusting outer pipe 101 and centrifugal casting layer 102, can change the total weight of body 1 to the total weight of control concrete conveying pipe avoids the mobile concrete pump overweight, enlarges the application of this application in the mobile concrete pump.

When the pipe joint 2 between the adjacent conveying pipe bodies is connected in a sealing mode, the probability of concrete leakage can be reduced, and the reliability of concrete conveying is improved.

In the present application, the outer pipe 101 is a steel pipe; the steel pipe is selected as the outer layer pipe, so that the integrity is good, and the material selection is convenient.

In the application, the centrifugal casting layer 102 is made of high-carbon steel or spring steel, and specifically, may be made of 45Mn2, 55Mn, 65MnCr, 70# and other materials; the wearing layer is a high-carbon steel layer or a spring steel layer, has better wearing resistance, and is beneficial to prolonging the service life of the concrete conveying pipe.

In the present application, the thickness of the centrifugally cast layer 102 is preferably 2mm to 3 mm; preferably, the thickness of the outer tube 101 is 2mm, and the thickness of the centrifugal casting layer 102 is 2 mm.

The connection relationship between the adjacent pipe joints 2 is as follows: the adjacent pipe joints 2 are connected through a hoop 3, and the outer surface of each pipe joint 2 is provided with a clamping groove 201 capable of being clamped into the hoop 3; when two adjacent coupling 2 when relative, go into one of them draw-in groove with one side card of clamp 3, go into another draw-in groove with the another side card of clamp 3, wrap up two coupling 2 junctions through the ring type sealing washer of 3 internal surfaces of clamp, then hold clamp 3 tightly, accomplish the butt joint, 3 both sides of clamp are restricted in two draw-in grooves 201 this moment, avoid clamp 3 to slide or break away from body 1 on body 1, further improve the stability that coupling 2 docked.

In conclusion, the thickness of the outer-layer pipe and the centrifugal casting layer is controllable, the pipe is a metallurgical composite double-layer integrated pipe body, the pipe has the advantages of light weight, good impact resistance, good wear resistance and long service life, the impact force between the pipe body and a scaffold or a building can be borne when the vehicle arm rises, and the centrifugal casting layer is prevented from dropping before the pipe body is used; the load limiting requirement in the concrete pump truck can be met, and the application of the application in the concrete pump truck is expanded; the pipe joint cooperation clamp carries out quick butt joint to adjacent conveyer pipe body, satisfies the demand of quick seal installation between the adjacent conveyer pipe, improves economic nature and practicality.

Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims

1. The utility model provides a concrete conveying pipe for mobile concrete pump, includes the conveyer pipe body of multisection concatenation in proper order, its characterized in that: the conveying pipe body comprises a pipe body (1) and two pipe joints (2), wherein one pipe joint (2) is connected with one axial end of the pipe body, the other pipe joint (2) is connected with the other axial end of the pipe body (1), and the pipe joint (2) in one conveying pipe body can be in sealing connection with the pipe joint (2) in the other conveying pipe body;

the pipe body (1) comprises an outer layer pipe (101) and a centrifugal casting layer (102), the outer layer pipe (101) is used for improving the impact resistance of the outer surface of the pipe body (1), and the centrifugal casting layer (102) is arranged on the inner surface of the outer layer pipe (101) and used for improving the wear resistance of the pipe body (1);

the thickness of the outer layer pipe (101) is 1.5mm-3 mm.

2. The concrete conveying pipe for the concrete pump truck as claimed in claim 1, wherein: the centrifugal casting layer (102) is made of high-carbon steel or spring steel.

3. The concrete conveying pipe for the concrete pump truck as claimed in claim 1, wherein: the centrifugal casting layer (102) has a thickness of 2mm to 3 mm.

4. The concrete conveying pipe for the concrete pump truck as claimed in claim 3, wherein: the thickness of the outer layer pipe (101) is 2mm, and the thickness of the centrifugal casting layer (102) is 2 mm.

5. The concrete conveying pipe for a concrete pump truck according to any one of claims 1 to 4, characterized in that: adjacent be connected through clamp (3) between coupling (2), draw-in groove (201) that clamp (3) can be gone into to coupling (2) surface setting.

6. The concrete conveying pipe for the concrete pump truck as claimed in claim 5, wherein: and an annular sealing ring is arranged on the inner surface of the hoop (3).