Concrete conveying pipeline and concrete pump truck

Abstract

The utility model relates to the technical field of concrete pouring equipment, and discloses a concrete conveying pipeline and a concrete pump lor.The concrete conveying pipeline comprises a pipe body with a conveying tail end, an operation ring arranged on the pipe body and a blocking part arranged at the conveying tail end and used for blocking the operation ring; the operation ring is provided with a matching area and an avoiding area in the circumferential direction of the operation ring, the matching area extends towards the pipe body and is provided with a spacing part, so that a handheld space is formed between the avoiding area and the pipe body, and when a constructor swings the concrete conveying pipeline, the hand can stretch into the handheld space to grab the operation ring and drive the pipe body to swing, so that the construction efficiency is improved. Further, the stability of grabbing the concrete conveying pipeline by constructors is improved; the concrete pump truck comprises a truck body, a pumping device and a conveying channel communicated with the pumping device, and the concrete conveying pipeline is arranged at the tail end of the conveying channel, so that the effect that constructors swing the concrete conveying pipeline conveniently is achieved, and the construction efficiency is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of concrete pouring equipment, and specifically relates to a concrete delivery pipeline and a concrete pump truck. Background Art

[0002] A concrete pump truck is a concrete pouring equipment that uses pressure to continuously transport concrete along a conveying channel. It can pump concrete directly into the construction site without the need for traditional manpower or mechanical methods, thereby improving construction efficiency and saving time and costs.

[0003] The end of the delivery channel of the existing concrete pump truck has a delivery hose. When pumping concrete, the delivery channel needs to be supported first, and then the delivery hose is located at the position where the concrete needs to be poured; when pouring concrete at the desired construction location, the construction worker needs to swing the delivery hose so that the concrete is evenly poured at the desired construction location. Since the delivery hose is a tubular structure with a circular cross-sectional shape, the delivery hose is prone to slipping when the construction worker grabs it; in order to increase the construction worker's grasping stability of the delivery hose, some construction workers place the delivery hose on the shoulder of the body so that the shoulder supports the delivery hose, and at the same time grasp the end of the delivery hose with both hands to increase the construction worker's grasping stability of the delivery hose; however, the delivery hose is easy to slip from the construction worker's shoulder, which will still affect the construction worker's grasping stability of the delivery hose to a certain extent. Utility Model Content

[0004] The present application provides a concrete delivery pipe, which increases the grasping stability of the concrete delivery pipe by construction workers.

[0005] The technical solution adopted in this application is:

[0006] A concrete conveying pipeline comprises a pipe body with a conveying end, an operating ring arranged on the pipe body, and a blocking part arranged on the conveying end for blocking the operating ring, wherein the operating ring has a matching area and an escape area along its circumference, and the matching area is provided with a spacer extending toward the pipe body so that a hand-holding space is formed between the escape area and the pipe body.

[0007] By adopting the above technical solution, when using the concrete delivery pipe, it is necessary to install it at the end of the delivery pipe of the concrete pump truck. When pouring concrete, the construction workers can put their hands into the hand-held space to take the operating ring, and at this time the blocking part can block the operating ring to avoid the separation of the operating ring and the pipe body, thereby increasing the stability of the construction workers in taking the pipe body; at the same time, through the setting of the operating ring, when the construction workers swing the pipe body, they only need to pull the operating ring, which reduces the difficulty of the construction workers to swing the pipe body and improves the construction workers' use experience; and avoids the situation where the construction workers need to carry the pipe body on their shoulders, so as to reduce the labor intensity of the construction workers; in addition, the operating ring can slide relative to the pipe body, so that the relative position of the operating ring and the pipe body can change, so as to adapt to the pouring in different positions and construction workers of different heights, thereby improving the construction efficiency.

[0008] Optionally, a plurality of the matching areas are arranged at intervals along the circumference of the operating ring, and the avoidance area is located between two adjacent matching areas.

[0009] By adopting the above technical solution, multiple matching areas are arranged at intervals along the circumference of the operating ring, and then multiple hand-holding spaces are formed in the circumference of the operating ring, so that construction workers can grasp the operating ring at any position, thereby improving the construction workers' usage experience. At the same time, the weight of the operating ring can be reduced to reduce the labor intensity of the construction workers.

[0010] Optionally, the spacer is provided with a receiving groove, and the concrete delivery pipe further comprises an elastic ring sleeved on the outside of the pipe body, the elastic ring is located in the receiving groove and the hand holding space, and an escape gap is provided between the elastic ring and the pipe body for a hand to pass through, so that when the hand passes through the escape gap and presses the elastic ring, the elastic ring undergoes elastic deformation and presses against the pipe body.

[0011] By adopting the above technical solution, when the construction personnel take the operating ring, they first put their hands into the avoidance gap, and then apply pressure to the elastic ring to deform the elastic ring, so that the end of the elastic ring away from the hand is pressed against the circumference of the pipe body, so as to increase the connection stability between the operating ring and the pipe body, avoid relative sliding of the operating ring and the pipe body when the construction personnel pull the pipe body, so as to achieve the effect of quickly swinging the pipe body to the desired position for pouring concrete.

[0012] Optionally, a limiting portion located inside the elastic ring is provided in the accommodating groove to confine a portion of the elastic ring in the accommodating groove.

[0013] By adopting the above technical solution, since the limiting part is located on the inner side of the elastic ring, the limiting part can block the elastic ring to increase the connection stability between the elastic ring and the operating ring, thereby avoiding the situation where the elastic ring may be separated from the operating ring.

[0014] Optionally, the spacing portion has a middle section and side ends located on both sides of the middle section, and the limiting portion is arranged in the middle section.

[0015] By adopting the above technical solution, since the limiting part is located in the middle section, the distance between two adjacent limiting parts is increased, so that when the construction personnel apply pressure to the elastic ring, the elastic ring can undergo greater elastic deformation, so as to increase the tightening effect between the elastic ring and the pipe body, thereby further increasing the connection stability between the operating ring and the pipe body when the construction personnel hold the operating ring to swing the pipe body.

[0016] Optionally, the avoidance zone cover is provided with a soft cover.

[0017] By adopting the above technical solution, since the avoidance area cover is provided with a soft cover, the comfort of the construction workers when grasping the avoidance area is increased, thereby improving the construction workers' use experience and avoiding the situation where the construction workers suffer from hand pain due to grasping the avoidance area for a long time.

[0018] Optionally, the operating ring includes a mating segment and an avoidance segment detachably connected to the mating segment, the avoidance area is arranged on the avoidance segment, and the mating area is arranged on the mating segment.

[0019] By adopting the above technical solution, as the use time of the concrete conveying pipeline continues to increase, the flexible sleeve may become hardened or damaged. However, since the avoidance section and the matching section are detachably connected, the difficulty of replacing the flexible sleeve is reduced, thereby achieving the effect of facilitating the replacement of the flexible sleeve.

[0020] Optionally, connecting parts are extended from both ends of the avoidance section, and the connecting parts are detachably connected to the matching section.

[0021] By adopting the above technical solution, since connecting parts that are detachably connected to the mating section are extended from both ends of the avoidance section, the connecting position between the avoidance section and the mating section is located on the outside of the avoidance section, so as to achieve the effect of facilitating the connection between the avoidance section and the mating section, while avoiding the situation where the connecting position between the avoidance section and the mating section affects the setting of the soft sleeve.

[0022] Optionally, the matching segment is provided with a hidden groove, and the connecting portion is located in the hidden groove.

[0023] By adopting the above technical solution, after the mating section and the avoidance section are connected together, the connecting part is located in the hidden groove, and then the connecting part is hidden in the hidden groove to avoid the connecting part protruding from the circumference of the mating section and interfering with the hands of the construction workers, thereby ensuring the use experience of the construction workers. At the same time, the coordination between the connecting part and the hidden groove can also limit the mating section and the avoidance section to further increase the connection stability between the mating section and the avoidance section.

[0024] The present application also discloses a concrete pump truck, comprising a vehicle body, a pumping device and a conveying channel connected to the pumping device, wherein the end of the conveying channel is provided with the concrete conveying pipeline as described above.

[0025] By adopting the above technical solution and the above concrete delivery pipe, it is convenient for construction workers to take the pipe body, and at the same time, the stability of construction workers in taking the pipe body is increased.

[0026] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0027] 1. The concrete conveying pipe in the present application comprises a pipe body with a conveying end, an operating ring arranged on the pipe body, and a blocking part arranged on the conveying end for blocking the operating ring. The operating ring has a matching area and an avoidance area along its circumference. The matching area is provided with a spacing part extending toward the pipe body so that a hand-holding space is formed between the avoidance area and the pipe body, thereby increasing the stability of the construction personnel in holding the pipe body; at the same time, through the setting of the operating ring, when the construction personnel swing the pipe body, they only need to pull the operating ring, which reduces the difficulty of the construction personnel in swinging the pipe body and improves the construction personnel's use experience; and avoids the situation where the construction personnel need to carry the pipe body on their shoulders, so as to reduce the labor intensity of the construction personnel; in addition, the operating ring can slide relative to the pipe body, so that the relative position of the operating ring and the pipe body can change, so as to adapt to the pouring at different positions and the construction personnel of different heights, thereby improving the construction efficiency.

[0028] 2. In the present application, a plurality of matching areas are arranged at intervals along the circumference of the operating ring, and the avoidance area is located between two adjacent matching areas. That is to say, a plurality of avoidance areas are also arranged, so that a plurality of hand-holding spaces are formed in the circumference of the operating ring, so that construction workers can grasp the operating ring at any position, thereby improving the construction workers' use experience, and at the same time reducing the weight of the operating ring to reduce the labor intensity of construction workers.

[0029] 3. The spacing portion in the present application is provided with a receiving groove, and the concrete conveying pipe also includes an elastic ring sleeved on the outside of the pipe body, the elastic ring is located in the receiving groove and the hand-holding space, and there is an avoidance gap between the elastic ring and the pipe body for the hand to pass through, so that when the hand passes through the avoidance gap and presses the elastic ring, the elastic ring undergoes elastic deformation and presses against the pipe body, so as to increase the connection stability between the operating ring and the pipe body, and avoid the relative sliding of the operating ring and the pipe body when the construction personnel pull the pipe body, so as to achieve the effect of quickly swinging the pipe body to the desired position for pouring concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0031] Figure 1 This is a schematic structural diagram of a concrete delivery pipeline according to one implementation mode of the present application;

[0032] Figure 2 This is a schematic diagram of the structure of the operating ring in one embodiment of the present application;

[0033] Figure 3 This is a schematic structural diagram of another viewing angle of the operating ring in one implementation manner of the present application;

[0034] Figure 4 A cross-sectional view of the operating ring according to one embodiment of the present application;

[0035] Figure 5 A cross-sectional view of the operating ring in another embodiment of the present application;

[0036] Figure 6 This is a schematic diagram of the structure of the operating ring in another embodiment of the present application.

[0037] Reference numerals:

[0038] 1. Tube body; 11. Blocking part; 2. Operating ring; 21. Matching section; 211. Spacer; 212. Accommodating groove; 213. Limiting part; 214. Hand-held space; 22. Avoiding section; 221. Soft cover; 222. Connecting part; 3. Elastic ring. DETAILED DESCRIPTION

[0039] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0041] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0044] Reference Figures 1 to 6 , discloses a concrete conveying pipeline, comprising a pipe body 1 with a conveying end, an operating ring 2 arranged on the pipe body 1, and a blocking portion 11 arranged on the conveying end for blocking the operating ring 2, the operating ring 2 having a matching area and an avoidance area along its circumference, the matching area extending toward the pipe body 1 is provided with a spacer 211 to form a hand-held space 214 between the avoidance area and the pipe body 1.

[0045] When using the concrete delivery pipe, it needs to be installed at the end of the delivery pipe of the concrete pump truck. When pouring concrete, the construction worker can put his hand into the hand-held space 214 to pick up the operating ring 2, and at this time the blocking part 11 can block the operating ring 2 to avoid the separation of the operating ring 2 and the pipe body 1, thereby increasing the construction worker's stability in taking the pipe body 1; at the same time, through the setting of the operating ring 2, when the construction worker swings the pipe body 1, it only needs to pull the operating ring 2, which reduces the difficulty of the construction worker swinging the pipe body 1 and improves the construction worker's use experience; and it avoids the need for the construction worker to carry the pipe body 1 on the shoulder, so as to reduce the labor intensity of the construction worker; in addition, the operating ring 2 can slide relative to the pipe body 1, so that the relative position of the operating ring 2 and the pipe body 1 can change, so as to adapt to the pouring in different positions and construction workers of different heights, thereby improving the construction efficiency.

[0046] It should be noted that the pipe body 1 is made of elastic material, such as rubber, plastic, etc., so that construction workers can swing it.

[0047] The present application does not specifically limit the structure of the spacer 211. Preferably, the spacer 211 is a block structure disposed inside the matching area. In other embodiments, the spacer 211 may also be a rod structure disposed inside the matching area.

[0048] The present application does not specifically limit the structure of the blocking portion 11. Preferably, the blocking portion 11 is an annular structure sleeved on the delivery end to increase the blocking effect of the blocking portion 11 on the operating ring 2, thereby increasing the connection stability between the operating ring 2 and the tube body 1. In other embodiments, the blocking portion 11 may also be a block structure arranged at intervals along the circumference of the delivery end.

[0049] The present application does not specifically limit the number of coordination areas and avoidance areas. Preferably, refer to Figure 2 , Figure 3 and Figure 4 , multiple matching areas are arranged at intervals along the circumference of the operating ring 2, and the avoidance area is located between two adjacent matching areas, that is, multiple avoidance areas are also arranged at intervals along the circumference of the operating ring 2, so that multiple hand-held spaces 214 are formed on the circumference of the operating ring 2, so that construction workers can grasp the operating ring 2 at any position, thereby improving the construction workers' use experience, and at the same time, the weight of the operating ring 2 can be reduced to reduce the labor intensity of the construction workers. In other embodiments, only one matching area and one avoidance area can be provided.

[0050] In a preferred embodiment, referring to Figure 2 , Figure 3 and Figure 4The spacer 211 is provided with a receiving groove 212, and the concrete delivery pipe also includes an elastic ring 3 sleeved on the outside of the pipe body 1, the elastic ring 3 is located in the receiving groove 212 and the hand-holding space 214, and there is an avoidance gap between the elastic ring 3 and the pipe body 1 for the hand to pass through, so that when the hand passes through the avoidance gap and presses the elastic ring 3, the elastic ring 3 undergoes elastic deformation and presses against the pipe body 1.

[0051] That is to say, when the construction personnel take the operating ring 2, they first put their hands into the avoidance gap, and then apply pressure to the elastic ring 3, thereby gradually increasing the width of the avoidance gap, so that the elastic ring 3 is deformed, so that the end of the elastic ring 3 away from the hand is pressed against the circumferential surface of the pipe body 1, so as to increase the connection stability between the operating ring 2 and the pipe body 1, and avoid relative sliding of the operating ring 2 and the pipe body 1 when the construction personnel pull the pipe body 1, so as to achieve the effect of quickly swinging the pipe body 1 to the desired position for pouring concrete.

[0052] The present application does not make any specific limitation on the material used to make the elastic sheet. The elastic sheet may be made of an elastic metal material, such as an annular structure made of an iron material; or it may be made of an elastic non-metallic material, such as an annular structure made of a rubber or silicone material.

[0053] Further, see Figure 2 and Figure 4 A limiting portion 213 located inside the elastic ring 3 is provided in the accommodating groove 212 to limit a portion of the elastic ring 3 in the accommodating groove 212 .

[0054] Since the limiting portion 213 is located inside the elastic ring 3 , the limiting portion 213 can block the elastic ring 3 to increase the connection stability between the elastic ring 3 and the operating ring 2 , thereby preventing the elastic ring 3 from being separated from the operating ring 2 .

[0055] The present application does not specifically limit the structure of the limiting portion 213. Preferably, refer to Figure 2 and Figure 4 The limiting portion 213 is a columnar structure disposed in the receiving groove 212 to increase the blocking effect of the limiting portion 213 on the elastic ring 3. In other implementation examples, the limiting portion 213 can also be a bolt threadedly connected to the spacing portion 211, and the bolt is inserted into the receiving groove 212.

[0056] Further, refer to Figure 2 and Figure 4The spacer 211 has a middle section and side ends on both sides of the middle section, and the limiting portion 213 is arranged in the middle section, that is, the limiting portion 213 is arranged in the middle position in the length direction of the spacer 211, thereby increasing the distance between two adjacent limiting portions 213, so that when the construction personnel apply pressure to the elastic ring 3, the elastic ring 3 can undergo greater elastic deformation, thereby increasing the tightening effect between the elastic ring 3 and the pipe body 1, and further increasing the connection stability between the operating ring 2 and the pipe body 1 when the construction personnel hold the operating ring 2 to swing the pipe body 1.

[0057] In a preferred embodiment, referring to Figures 1 to 6 The avoidance zone is provided with a soft cover 221, that is, when the construction workers grasp the avoidance zone, the soft cover 221 is in contact with the hands of the construction workers, thereby increasing the comfort of the construction workers when grasping the avoidance zone, thereby improving the use experience of the construction workers, and avoiding the hand pain caused by the construction workers grasping the avoidance zone for a long time.

[0058] The present application does not impose any specific limitation on the material of the soft cover 221 , and the soft cover 221 may be a structure made of elastic materials such as rubber, silicone, etc., or may be formed by wrapping a cloth around an avoidance area.

[0059] The present application does not specifically limit the structure of the operating ring 2, and the operating ring 2 may adopt any one of the following embodiments:

[0060] Embodiment 1. In this embodiment, referring to Figures 1 to 4 The operating ring 2 is an integrated structure to reduce the difficulty of producing the operating ring 2.

[0061] Implementation method 2. In this implementation method, refer to Figure 5 and Figure 6 The operating ring 2 includes a mating section 21 and an avoidance section 22 detachably connected to the mating section 21 , the avoidance area is arranged in the avoidance section 22 , and the mating area is arranged in the mating section 21 , that is, the operating ring 2 is a split structure formed by combining the mating section 21 and the avoidance section 22 .

[0062] As the concrete conveying pipeline is used for a long time, the flexible sleeve 221 may become hardened or damaged. However, since the avoidance section 22 and the matching section 21 are detachably connected, the difficulty of replacing the flexible sleeve 221 is reduced, thereby achieving the effect of facilitating the replacement of the flexible sleeve 221.

[0063] Further, see Figure 6Both ends of the avoidance section 22 are extended with connecting parts 222, and the connecting parts 222 are detachably connected to the mating section 21, so that the connecting position of the avoidance section 22 and the mating section 21 is located on the outside of the avoidance section 22, so as to achieve the effect of facilitating the connection of the avoidance section 22 and the mating section 21 together, and at the same time avoid the situation where the connecting position of the avoidance section 22 and the mating section 21 affects the setting of the soft cover 221.

[0064] Furthermore, the mating segment 21 is provided with a hidden groove, and the connecting portion 222 is located in the hidden groove. After the mating segment 21 and the avoidance segment 22 are connected together, the connecting portion 222 is located in the hidden groove, and then the connecting portion 222 is hidden in the hidden groove, so as to avoid the connecting portion 222 protruding from the peripheral surface of the mating segment 21 and interfering with the hands of the construction workers, thereby ensuring the use experience of the construction workers. At the same time, the cooperation between the connecting portion 222 and the hidden groove can also limit the mating segment 21 and the avoidance segment 22, so as to further increase the connection stability between the mating segment 21 and the avoidance segment 22.

[0065] The present application does not specifically limit the structure of the connection portion 222. Preferably, the connection portion 222 is a block structure provided on the avoidance section 22 to increase the connection stability between the avoidance section 22 and the matching section 21. In other implementation examples, the connection portion 222 may also be a sheet structure.

[0066] The present application does not specifically limit the detachable connection method of the connection portion 222 and the mating section 21. Preferably, the connection portion 222 is provided with a hexagon socket bolt, which is threadedly connected to the mating section 21, and the bolt head of the hexagon socket bolt can be hidden in the connection portion 222. In other implementation examples, the connection portion 222 can also be detachably connected to the mating section 21 by screws.

[0067] The present application also discloses a concrete pump truck, comprising a vehicle body, a pumping device and a conveying channel connected to the pumping device, wherein the end of the conveying channel is provided with the above-mentioned concrete conveying pipe, that is, the end of the pipe body 1 away from the conveying end is connected to the end of the conveying channel.

[0068] Due to the adoption of the above-mentioned concrete conveying pipeline, it is convenient for construction workers to take the pipe body 1 , and at the same time, the stability of construction workers in taking the pipe body 1 is increased.

[0069] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0070] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0071] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A concrete delivery pipeline, characterized in that: The invention comprises a tube body (1) having a conveying end, an operating ring (2) arranged on the tube body (1), and a blocking portion (11) arranged on the conveying end for blocking the operating ring (2); the operating ring (2) has a matching area and an escape area along its circumference; the matching area is provided with a spacer (211) extending toward the tube body (1) so that a hand-held space (214) is formed between the escape area and the tube body (1).

2. A concrete delivery pipeline according to claim 1, characterized in that: A plurality of the matching areas are arranged at intervals along the circumference of the operating ring (2), and the avoidance area is located between two adjacent matching areas.

3. A concrete delivery pipeline according to claim 1, characterized in that: The spacer (211) is provided with a receiving groove (212), and the concrete delivery pipe further comprises an elastic ring (3) sleeved on the outside of the pipe body (1), the elastic ring (3) being located in the receiving groove (212) and the hand-holding space (214), and an escape gap for a hand to pass through is provided between the elastic ring (3) and the pipe body (1), so that when a hand passes through the escape gap and presses the elastic ring (3), the elastic ring (3) undergoes elastic deformation and presses against the pipe body (1).

4. A concrete delivery pipeline according to claim 3, characterized in that: The containing groove (212) is provided with a limiting portion (213) located inside the elastic ring (3) so as to limit a portion of the elastic ring (3) in the containing groove (212).

5. A concrete delivery pipeline according to claim 4, characterized in that: The spacing portion (211) comprises a middle section and side ends located on both sides of the middle section, and the limiting portion (213) is arranged in the middle section.

6. A concrete delivery pipeline according to claim 1, characterized in that: The avoidance zone is provided with a soft cover (221).

7. A concrete delivery pipeline according to claim 1, characterized in that: The operating ring (2) comprises a matching section (21) and an avoidance section (22) detachably connected to the matching section (21); the avoidance area is arranged on the avoidance section (22); and the matching area is arranged on the matching section (21).

8. A concrete delivery pipeline according to claim 7, characterized in that: Connecting portions (222) are extended from both ends of the avoidance section (22), and the connecting portions (222) are detachably connected to the matching section (21).

9. A concrete delivery pipeline according to claim 8, characterized in that: The matching section (21) is provided with a hidden groove, and the connecting portion (222) is located in the hidden groove.

10. A concrete pump truck, characterized in that: The vehicle comprises a vehicle body, a pumping device and a conveying channel connected to the pumping device, wherein a concrete conveying pipe as claimed in any one of claims 1 to 9 is arranged at the end of the conveying channel.

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