Automatic dredging and knocking device for elbow pipe of concrete pump truck

Abstract

The utility model relates to the field of concrete pump truck elbow dredging, and discloses an automatic dredging and knocking device for a concrete pump truck elbow, which is mounted outside a conveying pipe on a lifting arm of a pump truck body, is close to a bent part of the conveying pipe and comprises a transmission component and a dredging component, the dredging assembly comprises a fixed cylinder fixed outside the conveying pipe, a shell is fixed to the outer side of the fixed cylinder, and a rotating cylinder rotationally connected with the fixed cylinder and the shell is arranged between the fixed cylinder and the shell. According to the concrete dredging device, the dredging mechanism and the conveying pipe are used in cooperation, in the rotating process of the rotating cylinder, the supporting piece can slide up and down along the arc face of the supporting block, the roller is driven to regularly knock the inner wall of the conveying pipe, and therefore concrete blocked in the bent pipe can be efficiently vibrated off and cleaned, the dredging effect is good, and the practicability is high. The working efficiency of the concrete pump truck is improved, and the shutdown time caused by pipeline blockage is shortened.

Description

Technical Field

[0001] This utility model relates to the field of unblocking bends in concrete pump trucks, and in particular to an automatic unblocking and tapping device for bends in concrete pump trucks. Background Technology

[0002] In modern construction, concrete pump trucks, as highly efficient concrete conveying equipment, are widely used in various engineering projects. They accurately deliver concrete to designated locations through conveying pipes, greatly improving construction efficiency.

[0003] Concrete is viscous. During transportation, the flow rate and pressure of concrete are unevenly distributed at bends due to changes in angle. This can easily cause some concrete to adhere to and accumulate on the inner wall of the bend. Over time, this accumulated concrete gradually solidifies, causing pipe blockage.

[0004] Currently, manual unblocking is a relatively traditional method for addressing the problem of blockages in concrete pump truck bends. Construction workers need to use tools such as hammers and iron bars to manually tap the outer wall of the bend to dislodge the blockage of concrete. This method is labor-intensive and time-consuming, and the unblocking effect depends heavily on the experience and physical strength of the workers, resulting in low efficiency. Furthermore, it is difficult to control the force of manual tapping, and excessive tapping may damage the delivery pipe and shorten its service life. Therefore, an automatic unblocking and tapping device for concrete pump truck bends is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an automatic unblocking and tapping device for concrete pump truck bends, which aims to improve the problem of "manual unblocking of concrete pump truck bends is labor-intensive and inefficient" in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an automatic unblocking and tapping device for concrete pump truck bends, wherein the automatic unblocking and tapping device is installed on the outside of the conveying pipe on the lifting arm of the pump truck body and near the bend of the conveying pipe, and includes a transmission component and an unblocking component.

[0007] The unblocking assembly includes a fixed cylinder fixed to the outside of the delivery pipe, an outer shell fixed to the outside of the fixed cylinder, a rotating cylinder rotatably connected to both the fixed cylinder and the outer shell, and a bearing between the fixed cylinder and the rotating cylinder; a support block is fixedly connected to the outer wall of the fixed cylinder, a support member is slidably connected to the inner wall of the rotating cylinder, the support member is elastically connected to the rotating cylinder by a return spring, and a roller is rotatably connected to the outside of the support member;

[0008] The transmission assembly is fixed to the outer wall of the housing and is used to rotate the rotating cylinder; below the rotating cylinder, the roller cooperates with the support block to intermittently strike the fixed cylinder.

[0009] As a further description of the above technical solution:

[0010] The transmission assembly includes a drive motor fixed to the outside of the housing. The drive motor is fixedly connected to the outside of the housing. A gear is fixedly connected to the outside of the drive motor output shaft near the inside of the housing, and the gear is located inside the housing. A gear ring is fixedly connected to the outside of the rotating cylinder for driving the rotating cylinder to rotate, and the gear meshes with the gear ring.

[0011] As a further description of the above technical solution:

[0012] The support block is configured as a triangular shape, and the inclined surface on the support block is configured as an arc surface.

[0013] As a further description of the above technical solution:

[0014] The roller is made of rubber.

[0015] As a further description of the above technical solution:

[0016] A sealing cover is provided on the outer side of the outer shell, and a limiting component is provided on the outer side of the outer shell. The limiting component includes a limiting ring that is slidably connected to the inner wall of the outer shell. The limiting ring is elastically connected to the outer shell by a compression spring. One end of the compression spring is fixedly connected to the inner wall of the outer shell, and the other end of the compression spring is fixedly connected to the outer side of the limiting ring.

[0017] As a further description of the above technical solution:

[0018] The limiting ring is fixedly connected to a limiting block that restricts the rotation of the sealing cover on the side near the sealing cover. A limiting groove is provided on the outer side of the sealing cover to limit the limiting block, and the limiting block slides on the inner wall of the limiting groove.

[0019] As a further description of the above technical solution:

[0020] The outer side of the limiting block is set as an arc surface.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by using the unblocking mechanism and the conveying pipe together, during the rotation of the rotating drum, the support will slide up and down along the arc surface of the support block, driving the roller to regularly knock the inner wall of the conveying pipe, which can efficiently shake off and clean the concrete blocked in the bend, with good unblocking effect, improving the working efficiency of the concrete pump truck and reducing downtime caused by pipe blockage.

[0023] 2. In this utility model, by using the limiting component and the sealing cover together, the limiting block on the limiting ring cooperates with the limiting groove on the sealing cover under the action of the compression spring, which can limit the position of the sealing cover, prevent the sealing cover from being opened accidentally, ensure the stability of the device structure, good sealing performance, and facilitate the addition of lubricating grease to the device. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;

[0025] Figure 2 This is a three-dimensional structural diagram of the unblocking mechanism in this utility model;

[0026] Figure 3 This is a left-side three-dimensional cross-sectional view of the rotating cylinder and the outer shell in this utility model;

[0027] Figure 4 This is a three-dimensional structural diagram of the support member, reset spring, and roller in this utility model;

[0028] Figure 5 This is a three-dimensional structural diagram showing the disassembled fixed cylinder and outer shell in this utility model;

[0029] Figure 6 This is a three-dimensional structural diagram of the limiting ring and compression spring in this utility model.

[0030] Legend:

[0031] 1. Pump truck body; 2. Lifting boom; 3. Conveying pipe; 41. Fixed cylinder; 42. Rotating cylinder; 43. Bearing; 44. Housing; 45. Support block; 46. Support component; 47. Return spring; 48. Drum; 51. Drive motor; 52. Gear; 53. Gear ring; 6. Sealing cover; 71. Limiting ring; 72. Compression spring; 73. Limiting block; 74. Limiting groove. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 - Figure 3This utility model provides an embodiment of an automatic unblocking and tapping device for a concrete pump truck's bend pipe. The device is installed outside the conveying pipe 3 on the lifting arm 2 of the pump truck body 1, near the bend of the conveying pipe 3. It includes a transmission component and an unblocking component. The lifting arm 2 can perform lifting and lowering movements; by adjusting its angle and height, the conveying pipe 3 can reach different positions for concrete conveying operations. This technology is prior art and will not be described in detail. The conveying pipe 3 is used to convey concrete and is the channel for transporting concrete from the pump truck body 1 to a designated location. This technology is prior art and will not be described in detail. The unblocking component includes a fixed cylinder 41 fixed to the outside of the conveying pipe 3. To provide an installation base for other unblocking components, a housing 44 is fixed to the outside of the fixed cylinder 41, so that the rotating cylinder 42 is in a sealed environment. Lubricating grease can be added inside the device to increase its service life and prevent impurities from entering. A rotating cylinder 42 is provided between the fixed cylinder 41 and the housing 44, and is rotatably connected to both the fixed cylinder 41 and the housing 44. It can rotate relative to the fixed cylinder 41 and rotate under the drive of the transmission component, driving the internal support 46 and roller 48 to move. A bearing 43 is provided between the fixed cylinder 41 and the rotating cylinder 42 to reduce the friction when the rotating cylinder 42 rotates, so that the rotating cylinder 42 can rotate smoothly and steadily, ensuring the normal operation of the unblocking mechanism.

[0034] Reference Figure 2 - Figure 4 The outer wall of the fixed cylinder 41 is fixedly connected to a support block 45. The support block 45 is triangular in shape, and the inclined surface on the support block 45 is an arc surface. Multiple sets of support blocks are provided. During the rotation of the rotating cylinder 42, the support member 46 slides up and down along the arc surface of the support block 45, compressing the return spring 47 and changing the position of the support member 46. This causes the roller 48 to regularly tap and roll the inner wall of the conveying pipe 3, enhancing the unblocking effect. The inner wall of the rotating cylinder 42 is slidably connected to the support member 46. With the rotation of the rotating cylinder 42 and the action of the support block 45, the support member 46 will move up and down. The support member 46 and the rotating cylinder 42 are elastically connected by the return spring 47, providing support for the support member 46. The elastic force of the return spring 47, which is initially compressed, drives the roller 48 to effectively strike and roll the inner wall of the conveying pipe 3, maintaining the continuity of the unblocking operation. The roller 48 is rotatably connected to the outside of the support member 46. The roller 48 is made of rubber. The roller 48 contacts and rolls with the inner wall of the conveying pipe 3, striking and rubbing the inner wall of the conveying pipe 3, dislodging and clearing the concrete blocking the bend, thus achieving the unblocking function. The transmission component is fixed to the outer wall of the outer shell 44 and is used to rotate the rotating cylinder 42. Under the rotating cylinder 42, the roller 48 cooperates with the support block 45 to intermittently strike the fixed cylinder 41.

[0035] Reference Figure 2 , Figure 3 and Figure 5 The transmission assembly includes a drive motor 51 fixed to the outside of the housing 44. After starting, it outputs power to drive the gear 52 on the output shaft to rotate, providing power support for the entire dredging operation. The gear 52 is fixedly connected to the outside of the output shaft of the drive motor 51 near the inside of the housing 44, transmitting the power of the drive motor 51 to the rotating cylinder 42. A gear ring 53 for driving the rotating cylinder 42 to rotate is fixedly connected to the outside of the rotating cylinder 42, and the gear 52 meshes with the gear ring 53 and cooperates with the gear 52. Under the drive of the gear 52, the rotating cylinder 42 is driven to rotate. The gear 52 is located inside the housing 44.

[0036] Reference Figure 5 and Figure 6 A sealing cover 6 is provided on the outer side of the outer casing 44 to facilitate the addition of grease to the device for lubrication and maintenance of internal components. A limiting component is provided on the outer side of the outer casing 44, which includes a limiting ring 71 slidably connected to the inner wall of the outer casing 44. The limiting ring 71 is elastically connected to the outer casing 44 by a compression spring 72. Under the action of the compression spring 72, the limiting ring 71 can move within a certain range. The limiting block 73 on the side of the limiting ring 71 near the sealing cover 6 cooperates with the limiting groove 74 on the sealing cover 6 to limit the position of the sealing cover 6 and prevent the sealing cover 6 from being opened accidentally. One end of the compression spring 72 is fixedly connected to the inner wall of the outer casing 44, and the other end of the compression spring 72 is fixedly connected to the outer side of the limiting ring 71. The compression spring 72 provides elastic force to the limiting ring 71, so that the limiting ring 71 always maintains the limiting effect on the sealing cover 6, ensuring the stability of the device structure and good sealing performance. When it is necessary to open the sealing cover 6, the elastic force of the compression spring 72 can be overcome, and the limiting block 73 can be disengaged from the limiting groove 74 for easy operation.

[0037] Furthermore, a limiting block 73 is fixedly connected to the side of the limiting ring 71 near the sealing cover 6 to restrict the rotation of the sealing cover 6. The outer side of the limiting block 73 is set as an arc surface, which cooperates with the limiting groove 74 on the outer side of the sealing cover 6 and slides on the inner wall of the limiting groove 74 to limit the movement range of the sealing cover 6 and prevent the sealing cover 6 from being opened accidentally. The outer side of the sealing cover 6 is provided with a limiting groove 74 for limiting the limiting block 73. Multiple sets are provided, which cooperate with the limiting block 73 to limit the movement trajectory of the limiting block 73, thereby limiting the position of the sealing cover 6. The limiting block 73 slides on the inner wall of the limiting groove 74.

[0038] Working principle: During operation of the concrete pump truck, the drive motor 51 is started, and its output shaft drives the gear 52 to rotate. The gear 52 meshes with the gear ring 53 on the outside of the rotating cylinder 42. The rotating cylinder 42 rotates synchronously with the gear ring 53, providing power for the dredging operation. The rotating cylinder 42 is connected to the fixed cylinder 41 through the bearing 43. The bearing 43 reduces the friction during rotation, allowing the rotating cylinder 42 to rotate smoothly and steadily.

[0039] The support block 45 fixed to the inner wall of the fixed cylinder 41 is triangular in shape and the inclined surface is arc. Multiple sets of support blocks 45 are evenly distributed. When the rotating cylinder 42 rotates, the support member 46 slidably connected to its inner wall will slide up and down along the arc surface of the support block 45 under the elastic force of the return spring 47. The elastic force of the return spring 47 will cause the support member 46 to continuously restore its movement, thereby driving the outer rotating roller 48 to regularly knock on the inner wall of the conveying pipe 3. The roller 48 is made of rubber. When it contacts the inner wall of the conveying pipe 3, it can effectively shake off the concrete blocked in the bend without damaging the inner wall of the fixed cylinder 41, thus achieving efficient unblocking.

[0040] During normal operation, the limiting block 73 slides within the limiting groove 74, restricting the position of the sealing cover 6 to prevent it from opening accidentally, ensuring the stability of the device structure and good sealing. When it is necessary to open the sealing cover 6 for maintenance or to add grease, the limiting block 73 is disengaged from the limiting groove 74 by overcoming the elastic force of the compression spring 72, and the sealing cover 6 can then be opened for maintenance or to add grease.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic unblocking and tapping device for bends in concrete pump trucks, characterized in that; The automatic unblocking and tapping device is installed outside the conveying pipe (3) on the lifting arm (2) of the pump truck body (1) and near the bend of the conveying pipe (3), and includes a transmission component and an unblocking component. The unblocking assembly includes a fixed cylinder (41) fixed to the outside of the delivery pipe (3), a shell (44) fixed to the outside of the fixed cylinder (41), a rotating cylinder (42) rotatably connected to the fixed cylinder (41) and the shell (44) respectively, and a bearing (43) between the fixed cylinder (41) and the rotating cylinder (42); a support block (45) is fixedly connected to the outer wall of the fixed cylinder (41), a support member (46) is slidably connected to the inner wall of the rotating cylinder (42), the support member (46) and the rotating cylinder (42) are elastically connected by a return spring (47), and a roller (48) is rotatably connected to the outside of the support member (46); The transmission assembly is fixed to the outer wall of the housing (44) and is used to rotate the rotating cylinder (42); under the rotating cylinder (42), the roller (48) cooperates with the support block (45) to intermittently strike the fixed cylinder (41).

2. The automatic unblocking and tapping device for concrete pump truck bends according to claim 1, characterized in that: The transmission assembly includes a drive motor (51) fixed to the outside of the housing (44). A gear (52) is fixedly connected to the outside of the output shaft of the drive motor (51) near the inside of the housing (44). A gear ring (53) for driving the rotating cylinder (42) to rotate is fixedly connected to the outside of the rotating cylinder (42), and the gear (52) meshes with the gear ring (53).

3. The automatic unblocking and tapping device for concrete pump truck bends according to claim 1, characterized in that: The support block (45) is configured as a triangular shape, and the inclined surface on the support block (45) is configured as an arc surface.

4. The automatic unblocking and tapping device for concrete pump truck bends according to claim 1, characterized in that: The roller (48) is made of rubber.

5. The automatic unblocking and tapping device for concrete pump truck bends according to claim 1, characterized in that: A sealing cover (6) is provided on the outside of the outer shell (44), and a limiting component is provided on the outside of the outer shell (44). The limiting component includes a limiting ring (71) that is slidably connected to the inner wall of the outer shell (44). The limiting ring (71) is elastically connected to the outer shell (44) by a compression spring (72). One end of the compression spring (72) is fixedly connected to the inner wall of the outer shell (44), and the other end of the compression spring (72) is fixedly connected to the outside of the limiting ring (71).

6. The automatic unblocking and tapping device for concrete pump truck bends according to claim 5, characterized in that: The limiting ring (71) is fixedly connected to a limiting block (73) that restricts the rotation of the sealing cover (6) on the side near the sealing cover (6). A limiting groove (74) for limiting the limiting block (73) is provided on the outer side of the sealing cover (6), and the limiting block (73) slides on the inner wall of the limiting groove (74).

7. The automatic unblocking and tapping device for concrete pump truck bends according to claim 6, characterized in that: The outer side of the limiting block (73) is set as an arc surface.

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