Cantilever crane of concrete pump truck and concrete pump truck

Abstract

The utility model relates to the technical field of concrete, and discloses a concrete pump truck arm support and a concrete pump truck, which comprise a base, the top of the base is rotatably connected with a rotating seat, the outer side of the top of the rotating seat is fixedly connected with a fixed iron outer frame, the top of the rotating seat is fixedly connected with a mud pump, the output end is communicated with a mud guide pipe, and the mud guide pipe is communicated with the output end of the rotating seat. The top end of the fixed iron outer frame is fixedly connected with a triangular rotating connecting piece, the top end of the triangular rotating connecting piece is rotationally connected with a rotating iron outer frame, and the top end and the bottom end of the interior of the rotating iron outer frame are each fixedly connected with two guide rails. According to the utility model, the stretching action of the delivery pipe is replaced by the extension of the extension cylinder, and meanwhile, the height is adjusted by the height adjusting mechanism, so that the functions of efficiently delivering concrete and flexibly adjusting the output position and height are realized, and the problem that the service life of the pump truck is shortened due to long-time stretching of the delivery pipe is solved.

Description

Technical Field

[0001] This utility model relates to the field of concrete technology, and in particular to concrete pump truck boom and concrete pump truck. Background Technology

[0002] The boom of a concrete pump truck is an important component of a concrete pump truck. A concrete pump truck is a machine that uses pressure to continuously transport concrete along pipelines. By controlling the hydraulic system, the boom sections are extended or retracted in a predetermined sequence and angle, thereby achieving different working radii and material placement ranges. When pumping concrete, the boom bears the weight of the concrete and the pumping pressure, while also needing to remain stable to ensure that the concrete can be accurately delivered to the target location.

[0003] A search revealed Chinese patent publication number CN217128998U, which discloses a concrete pump truck boom and a concrete pump truck, relating to the field of concrete processing technology. The boom includes a main body, with an adjustment mechanism installed at its bottom. The adjustment mechanism includes a load-bearing frame and a rotating motor, with the load-bearing frame rotatably connected to the main body. Two truncated cones are fixedly connected to both sides of one end of the load-bearing frame, and the rotating motor is externally fixed to one of the truncated cones. A drive shaft is fixedly connected to the output end of the rotating motor, and one end of the drive shaft passes through the other truncated cone and is fixedly connected to a transmission wheel. This invention uses the output end of the pump truck boom as the input component and a retracting roller as the output component, with the spray hose coiled around the outside of the retracting roller. In actual use, the actual length of the spray hose can be released through the retracting roller, reducing the frequency of hose stretching during use and indirectly extending the service life of the spray hose. While the retracting roller can release the hose length to reduce stretching frequency, this method alone has limited adjustment capabilities. Furthermore, during frequent retraction and extension, improper operation can lead to hose twisting and tangling, affecting normal use. Under complex working conditions, wear and tear will still occur, making it difficult to fully meet the needs of different operating environments for extending the service life of the spray hose. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a concrete pump truck boom and a concrete pump truck, aiming to improve the existing technology where improper operation can cause the spraying hose to twist and entangle, affecting normal use, and it will still face wear under complex working conditions.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a concrete pump truck boom and a concrete pump truck, including a base, a rotating seat rotatably connected to the top of the base, a fixed iron outer frame fixedly connected to the outer side of the top of the rotating seat, a sludge pump fixedly connected to the top of the rotating seat, a sludge guide pipe connected to the output end of the sludge pump, a triangular rotating connector fixedly connected to the top of the fixed iron outer frame, a rotating iron outer frame rotatably connected to the top of the triangular rotating connector, two guide rails fixedly connected to the top and bottom of the inner top of the rotating iron outer frame, two fixed sliding plates slidably connected to the outer walls of the multiple guide rails, an extension cylinder penetrating the middle of each of the two fixed sliding plates, the extension cylinder slidably connected to the right end of the outer wall of the sludge guide pipe, a guide connecting block connected to the right end of the extension cylinder, a folding guide pipe connected to the bottom end of the guide connecting block, an adjusting nozzle connected to the bottom end of the folding guide pipe, a driving component provided on the left side of the inner interior of the rotating iron outer frame, and a height adjustment mechanism provided on the outer wall of the fixed iron outer frame.

[0006] The above technical solution replaces the stretching action of the conveying pipe by extending and retracting the extension cylinder, while adjusting the height with a height adjustment mechanism. This achieves efficient concrete conveying and flexible adjustment of the output position and height, solving the problem of reduced service life of pump trucks due to prolonged stretching of the conveying pipeline.

[0007] As a further description of the above technical solution:

[0008] The height adjustment mechanism includes two carrier plates, with one adjacent end of each carrier plate fixedly connected to the left and right sides of the outer side of the fixed iron outer frame. A winding wheel is fixedly connected to the top of each carrier plate, and two steel ropes are provided on the outside of each winding wheel. A hook is fixedly connected to the top of each steel rope. Two hanging rings are fixedly connected to the left and right sides of the bottom of the rotating iron outer frame, and the interiors of the hooks and the interiors of the hanging rings engage with each other.

[0009] The above technical solution involves rotating the winding wheel to wind up and unwind the steel rope. The hook at the top of the steel rope engages with the hanging ring at the bottom of the rotating iron outer frame. By winding up and unwinding the steel rope, the height of the rotating iron outer frame can be adjusted, thus achieving flexible adjustment of the boom height of the concrete pump truck. This adapts to the needs of different working scenarios and ensures that the equipment operates efficiently and stably under different working conditions.

[0010] As a further description of the above technical solution:

[0011] The drive assembly includes a fixed plate, which is fixedly connected to the inside left side of the rotating iron outer frame. An electric telescopic rod is fixedly connected to the right side of the fixed plate, and the right end of the electric telescopic rod is fixedly connected to the left middle of the left side of the fixed slide plate.

[0012] Through the above technical solution: the fixed plate in the drive assembly provides fixed support for the electric telescopic rod, which can push the fixed slide plate at the left end to slide on the guide rail, thereby driving the extension tube, guide connecting block, folding guide tube and adjusting nozzle to move, so as to realize the function of adjusting the concrete output position.

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

[0014] A connecting rope is fixedly connected to the bottom left side of the inner side of the rotating iron outer frame, and a counterweight is fixedly connected to the bottom end of the connecting rope.

[0015] Through the above technical solution: the connecting rope connects the counterweight and the rotating iron outer frame. The counterweight can balance the weight distribution inside the rotating iron outer frame, ensuring stability when adjusting the position and angle of the boom, and preventing the normal operation of the equipment from being affected by the shift of the center of gravity.

[0016] As a further description of the above technical solution:

[0017] The input end of the sludge pump is connected to a feed inlet, and a connecting flange is fixedly connected to the left end of the feed inlet.

[0018] The above technical solution allows the feed inlet to be the channel through which materials such as concrete are fed into the sludge pump. The connecting flange facilitates the connection between the feed inlet and the external conveying pipeline, ensuring the sealing and stability of the connection and enabling the efficient delivery of materials to the sludge pump for the next pumping operation.

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

[0020] Both the fixed iron outer frame and the rotating iron outer frame are fixedly connected to the outer walls of multiple diagonal braces, and the multiple diagonal braces are fixedly connected in a cross manner.

[0021] The above technical solution involves multiple diagonal braces that are cross-connected to the outer wall of the fixed iron outer frame and the rotating iron outer frame, which enhances the structural strength and stability of the frame. During the operation of the boom, it can withstand various external forces and loads, prevent the frame from deforming or being damaged, and ensure the safe and reliable operation of the equipment.

[0022] As a further description of the above technical solution:

[0023] A working indicator light is fixedly connected to the top of the guide connecting block, and the working indicator light is electrically connected to the mud pump.

[0024] The above technical solution involves fixing the working indicator light on the top of the guide connecting block and electrically connecting it to the mud pump. When the mud pump is working, the working indicator light will illuminate, indicating the working status of the equipment. This allows operators to intuitively understand the operation of the equipment from a distance, improving work safety and efficiency.

[0025] As a further description of the above technical solution:

[0026] The concrete pump truck includes the concrete pump truck boom described in any of the above-mentioned schemes.

[0027] Through the above technical solution, the concrete pump truck, including the aforementioned concrete pump truck boom, achieves efficient concrete transportation and flexible adjustment of output position and height, meeting the needs of different construction sites.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the extension cylinder is used to replace the stretching action of the conveying pipe, and the height is adjusted by the height adjustment mechanism. This realizes the functions of efficient concrete conveying and flexible adjustment of output position and height, and solves the problem of reduced service life of pump trucks due to long-term stretching of the conveying pipe.

[0030] 2. In this utility model, the steel rope is wound and released by rotating the winding wheel. The hook at the top of the steel rope cooperates with the hanging ring at the bottom of the rotating iron outer frame. The height of the rotating iron outer frame can be adjusted by winding and releasing the steel rope, realizing flexible adjustment of the boom height of the concrete pump truck, adapting to the needs of different working scenarios, and ensuring that the equipment operates efficiently and stably under different working conditions. Attached Figure Description

[0031] Figure 1 This is a front view of the concrete pump truck boom and the concrete pump truck proposed in this utility model.

[0032] Figure 2 This is a schematic diagram of the structure of the concrete pump truck boom and the electric telescopic rod in the concrete pump truck proposed in this utility model.

[0033] Figure 3 This is a schematic diagram of the structure of the concrete pump truck boom and the height adjustment mechanism in the concrete pump truck proposed in this utility model.

[0034] Figure 4 This is a schematic diagram of the structure of the concrete pump truck boom and the hook in the concrete pump truck proposed in this utility model.

[0035] Figure 5 This is a schematic diagram of the structure of the concrete pump truck boom and the connecting rope in the concrete pump truck proposed in this utility model.

[0036] Legend:

[0037] 1. Base; 2. Height adjustment mechanism; 201. Carrier plate; 202. Winding reel; 203. Steel rope; 204. Hook; 205. Hanging ring; 3. Rotating seat; 4. Fixed iron outer frame; 5. Mud pump; 6. Mud guide pipe; 7. Triangular rotating connector; 8. Rotating iron outer frame; 9. Guide rail; 10. Fixed slide plate; 11. Extension tube; 12. Guide connecting block; 13. Folding guide tube; 14. Adjustable nozzle; 15. Fixed plate; 16. Electric telescopic rod; 17. Connecting rope; 18. Counterweight; 19. Feed inlet; 20. Connecting flange; 21. Diagonal brace; 22. Working indicator light. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0039] Reference Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment of a concrete pump truck boom and a concrete pump truck, including a base 1, which supports the entire device and ensures the stability of the equipment during operation. A rotating seat 3 can rotate on the top of the base 1 to achieve horizontal rotation of the device, facilitating adjustment of the pumping direction. A fixed iron outer frame 4 is fixedly connected to the top outer side of the rotating seat 3 to provide installation positions for other components, ensuring structural stability. A sludge pump 5 is fixedly connected to the top of the rotating seat 3 to transport materials such as concrete through a sludge guide pipe 6 connected to its output end, realizing the material pumping function. A triangular rotating connector 7 is fixedly connected to the top of the fixed iron outer frame 4, allowing the rotating iron outer frame 8 to rotate at its top to adjust its direction, increasing the flexibility of pumping. Two guide rails 9 are fixedly connected to the top and bottom of the rotating iron outer frame 8 to provide sliding tracks for the fixed slide plate 10, allowing the fixed slide plate 10 to move smoothly. The extension cylinder 11, which runs through the middle, can slide on the right end of the outer wall of the mud guide pipe 6, and the right end of the extension cylinder 11 is connected to the guide connecting block 12. The bottom end of the guide connecting block 12 is connected to the folding guide pipe 13, and the bottom end of the folding guide pipe 13 is connected to the adjusting nozzle 14. In this way, the output position of the concrete can be changed by adjusting the position of the fixed slide plate 10, which improves the pumping accuracy. The drive component set on the left side of the inner iron outer frame 8 can drive the fixed slide plate 10 to slide on the guide rail 9, thereby adjusting the position of the extension cylinder 11, the guide connecting block 12, the folding guide pipe 13 and the adjusting nozzle 14, further enhancing the pumping adjustability. The height adjustment mechanism 2 set on the outer wall of the fixed iron outer frame 4 can adjust the height of the entire device to adapt to different working requirements, improving the applicability of the equipment. In summary, the concrete pump truck boom and concrete pump truck of this utility model achieve the functions of efficient concrete transportation and flexible adjustment of output position and height through the synergistic effect of various components.

[0040] Specifically, the base 1 supports the entire device. The rotating seat 3 can rotate on top of the base 1 to achieve horizontal rotation of the device. The fixed iron outer frame 4 is fixed to the top outer side of the rotating seat 3 to provide installation positions for other components. The mud pump 5 is fixed to the top of the rotating seat 3, and the output end of the mud pump 5 is connected to the mud guide pipe 6 to transport materials such as concrete through the mud guide pipe 6. The triangular rotating connector 7 is fixedly connected to the top of the fixed iron outer frame 4, allowing the rotating iron outer frame 8 to rotate at its top to adjust its direction. The guide rails 9 at the top and bottom of the rotating iron outer frame 8 provide sliding tracks for the fixed slide plate 10. The extension cylinder 11 that runs through the middle of the two fixed slide plates 10 can slide on the right end of the outer wall of the mud guide pipe 6, and the right end of the extension cylinder 11 is connected to the mud guide pipe 6. The bottom end of the guide connecting block 12 is connected to the folding conduit 13, and the bottom end of the folding conduit 13 is connected to the adjusting nozzle 14. In this way, the output position of concrete can be changed by adjusting the position of the fixed slide plate 10. The drive component is set on the left side of the inner side of the rotating iron outer frame 8, which can drive the fixed slide plate 10 to slide on the guide rail 9, thereby adjusting the position of the extension cylinder 11, the guide connecting block 12, the folding conduit 13 and the adjusting nozzle 14. The outer wall of the fixed iron outer frame 4 is provided with a height adjustment mechanism 2, which can adjust the height of the entire device to adapt to different working requirements. It realizes the functions of efficient concrete transportation and flexible adjustment of output position and height, and can solve the problem of reduced service life of pump trucks due to long-term stretching of the transportation pipeline.

[0041] Reference Figure 1 , Figure 3 and Figure 4 The height adjustment mechanism 2 includes two carrier plates 201. The adjacent ends of the two carrier plates 201 are fixedly connected to the left and right sides of the outer iron frame 4, respectively, providing an installation base for the entire height adjustment mechanism 2 and ensuring the stability of the structure. The top of each carrier plate 201 is fixedly connected to a winding wheel 202, which can rotate to wind up and unwind the steel rope 203. Two steel ropes 203 are provided on the outside of each of the two winding wheels 202. The steel ropes 203 can be wound up and unwinded as the winding wheels 202 rotate, realizing the height adjustment function. The top of each of the multiple steel ropes 203 is fixedly connected to a hook 204, which is used to connect with a hanging ring 205. Two hanging rings 205 are fixedly connected to the bottom left and right sides of the rotating iron frame 8. The interiors of the multiple hooks 204 and the interiors of the multiple hanging rings 205 engage with each other to ensure the connection stability during the height adjustment process. In summary, the height adjustment mechanism 2 achieves flexible adjustment of the boom height of the concrete pump truck through the coordinated action of the carrier plate 201, the winding wheel 202, the steel rope 203, the hook 204, and the hanging ring 205, so as to adapt to different working scenarios and needs.

[0042] Specifically, the height adjustment mechanism 2 includes two carrier plates 201. The adjacent ends of the two carrier plates 201 are fixedly connected to the left and right sides of the outer frame 4, respectively, providing a mounting base for the entire height adjustment mechanism 2. A winding wheel 202 is fixedly connected to the top of each carrier plate 201, and the winding wheel 202 can rotate. Two steel ropes 203 are provided on the outside of each winding wheel 202, and the steel ropes 203 can be wound and unwound as the winding wheel 202 rotates. Each of the top ends of multiple steel cables 203 is fixedly connected to a hook 204. At the same time, two hanging rings 205 are fixedly connected to the left and right sides of the bottom of the rotating iron outer frame 8. When the height needs to be adjusted, the steel cables 203 are wound up and down by rotating the winding wheel 202, so that the hooks 204 and hanging rings 205 cooperate. When the steel cables 203 are lowered, the overall height of the rotating iron outer frame 8 decreases. When the steel cables 203 are retracted, the overall height of the rotating iron outer frame 8 increases. The interiors of the multiple hooks 204 and the multiple hanging rings 205 engage with each other to ensure the connection stability during the adjustment process, thereby realizing flexible adjustment of the height of the entire concrete pump truck boom to adapt to different working scenarios and needs.

[0043] Reference Figure 1 , Figure 2 and Figure 5 The drive assembly includes a fixing plate 15, which is fixedly connected to the left side of the rotating outer iron frame 8, providing an installation base for the electric telescopic rod 16 and ensuring its stability. The electric telescopic rod 16 is fixedly connected to the right side of the fixing plate 15, and the right end of the electric telescopic rod 16 is fixedly connected to the middle left side of the left-end fixed slide plate 10. The electric telescopic rod 16 can push the fixed slide plate 10 to slide on the guide rail 9, thereby adjusting the position of the extension cylinder 11, the guide connecting block 12, the folding guide tube 13, and the adjusting nozzle 14, so as to achieve precise control of the concrete output position. Functionally, a connecting rope 17 is fixedly connected to the bottom left side of the rotating outer iron frame 8. The connecting rope 17 serves as a connection, and a counterweight 18 is fixedly connected to the bottom end of the connecting rope 17. The counterweight 18 balances the weight distribution inside the rotating outer iron frame 8, ensuring the stability of the equipment operation. The input end of the mud pump 5 is connected to a feed inlet 19, which is used to receive materials such as concrete. A connecting flange 20 is fixedly connected to the left end of the feed inlet 19, facilitating the connection between the feed inlet 19 and an external conveying pipeline, ensuring the sealing and stability of the connection. In summary, the drive assembly, through the coordinated action of the fixed plate 15, the electric telescopic rod 16, the connecting rope 17, the counterweight 18, the feed inlet 19, and the connecting flange 20, achieves precise control of the concrete output position and stable operation of the equipment.

[0044] Specifically, the fixed plate 15 in the drive assembly provides fixed support for the electric telescopic rod 16. The electric telescopic rod 16 can push the fixed sliding plate 10 at the left end to slide on the guide rail 9, thereby driving the extension cylinder 11, guide connecting block 12, folding guide tube 13 and adjusting nozzle 14 to move, realizing the function of adjusting the concrete output position. The connecting rope 17 connects the counterweight block 18 and the rotating iron outer frame 8. The counterweight block 18 can balance the weight distribution inside the rotating iron outer frame 8, ensuring stability when adjusting the boom position and angle, and preventing the normal operation of the equipment from being affected by the center of gravity shift. The feed port 19 is the channel for the mud pump 5 to input concrete and other materials. The connecting flange 20 facilitates the connection of the feed port 19 to the external conveying pipeline, ensuring the sealing and stability of the connection, and facilitating the efficient delivery of materials to the mud pump 5 for the next pumping operation.

[0045] Reference Figure 1 Multiple diagonal braces 21 are fixedly connected to the outer walls of both the fixed iron outer frame 4 and the rotating iron outer frame 8. The multiple diagonal braces 21 are fixedly connected in a cross manner. The diagonal braces 21 enhance the structural strength and stability of the fixed iron outer frame 4 and the rotating iron outer frame 8, ensuring that the equipment is not easily deformed during operation. A working indicator light 22 is fixedly connected to the top of the guide connecting block 12. The working indicator light 22 is electrically connected to the mud pump 5. The working indicator light 22 can light up when the mud pump 5 is working, which serves to indicate the working status of the equipment and facilitates the operator's observation. The boom of the concrete pump truck in the above scheme can realize the functions of efficient concrete transportation and flexible adjustment of output position and height.

[0046] Specifically, the fixed outer iron frame 4 and the rotating outer iron frame 8 are connected in a cross-shaped manner with multiple diagonal braces 21, which enhances the structural strength and stability of the frame. During the operation of the boom, it can withstand various external forces and loads, prevent the frame from deforming or being damaged, and ensure the safe and reliable operation of the equipment. The working indicator light 22 is fixed on the top of the guide connecting block 12 and is electrically connected to the mud pump 5. When the mud pump 5 is working, the working indicator light 22 lights up, which serves to indicate the working status of the equipment. This allows the operator to intuitively understand the operation of the equipment from a distance, improving work safety and efficiency. The concrete pump truck, including the above-mentioned concrete pump truck boom, achieves efficient concrete transportation and flexible adjustment of output position and height through the coordinated action of various components, meeting the needs of different construction sites.

[0047] Working principle: The base 1 supports the entire device. The rotating seat 3 can rotate on top of the base 1, thus achieving horizontal rotation of the device. The fixed iron outer frame 4 is fixed to the top outside of the rotating seat 3, providing installation positions for other components. The mud pump 5 is fixed to the top of the rotating seat 3, and the output end of the mud pump 5 is connected to the mud guide pipe 6 to transport materials such as concrete through the mud guide pipe 6. The triangular rotating connector 7 is fixedly connected to the top of the fixed iron outer frame 4, allowing the rotating iron outer frame 8 to rotate at its top to adjust its direction. The guide rails 9 at the top and bottom of the rotating iron outer frame 8 are fixed sliding rails. Plate 10 provides a sliding track. The extension tube 11, which runs through the middle of the two fixed slide plates 10, can slide on the right end of the outer wall of the mud guide pipe 6. The right end of the extension tube 11 is connected to the guide connecting block 12. The bottom end of the guide connecting block 12 is connected to the folding guide pipe 13. The bottom end of the folding guide pipe 13 is connected to the adjusting nozzle 14. In this way, the output position of concrete can be changed by adjusting the position of the fixed slide plate 10. The drive component is provided on the left side of the inner side of the rotating iron outer frame 8, which can drive the fixed slide plate 10 to slide on the guide rail 9, thereby adjusting the position of the extension tube 11, the guide connecting block 12, the folding guide pipe 13 and the adjusting nozzle 14.

[0048] Furthermore, the height adjustment mechanism 2 includes two carrier plates 201, with adjacent ends of the two carrier plates 201 fixedly connected to the left and right sides of the fixed iron outer frame 4, respectively, providing an installation base for the entire height adjustment mechanism 2. A winding wheel 202 is fixedly connected to the top of each of the two carrier plates 201, and the winding wheel 202 can rotate. Two steel ropes 203 are provided on the outside of each of the two winding wheels 202, and the steel ropes 203 can be wound and unwound as the winding wheel 202 rotates. Hooks 204 are fixedly connected to the top of each of the steel ropes 203, and two hanging rings 205 are fixedly connected to the left and right sides of the bottom of the rotating iron outer frame 8. When height adjustment is required, the steel ropes 203 are wound and unwound by rotating the winding wheel 202, causing the hooks 204 and hanging rings 205 to engage. When the steel ropes 203 are lowered, the overall height of the rotating iron outer frame 8 decreases; when the steel ropes 203 are retracted, the overall height of the rotating iron outer frame 8 increases.

[0049] 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. A concrete pump truck boom, including a base (1), characterized in that: A rotating seat (3) is rotatably connected to the top of the base (1). A fixed iron outer frame (4) is fixedly connected to the outer side of the top of the rotating seat (3). A mud pump (5) is fixedly connected to the top of the rotating seat (3). The output end of the mud pump (5) is connected to a mud guide pipe (6). A triangular rotating connector (7) is fixedly connected to the top of the fixed iron outer frame (4). A rotating iron outer frame (8) is rotatably connected to the top of the triangular rotating connector (7). Two guide rails (9) are fixedly connected to the top and bottom of the rotating iron outer frame (8). Multiple guide rails (9) are connected to each other. Two fixed sliding plates (10) are slidably connected to the outer wall. An extension tube (11) passes through the middle of each of the two fixed sliding plates (10). The extension tube (11) is slidably connected to the right end of the outer wall of the mud guide pipe (6). The right end of the extension tube (11) is connected to a guide connecting block (12). The bottom end of the guide connecting block (12) is connected to a folding guide tube (13). The bottom end of the folding guide tube (13) is connected to an adjusting nozzle (14). A drive assembly is provided on the left side inside the rotating iron outer frame (8). A height adjustment mechanism (2) is provided on the outer wall of the fixed iron outer frame (4).

2. The concrete pump truck boom according to claim 1, characterized in that: The height adjustment mechanism (2) includes two carrier plates (201). The adjacent ends of the two carrier plates (201) are respectively fixedly connected to the left and right sides of the outer side of the fixed iron outer frame (4). The top of the two carrier plates (201) is fixedly connected to a winding wheel (202). The outer side of the two winding wheels (202) is provided with two steel ropes (203). The top of the multiple steel ropes (203) is fixedly connected to a hook (204). The bottom left and right sides of the rotating iron outer frame (8) are fixedly connected to two hanging rings (205). The interior of the multiple hooks (204) and the interior of the multiple hanging rings (205) are engaged with each other.

3. The concrete pump truck boom according to claim 1, characterized in that: The drive assembly includes a fixed plate (15), which is fixedly connected to the inside left side of the rotating iron outer frame (8). An electric telescopic rod (16) is fixedly connected to the right side of the fixed plate (15), and the right end of the electric telescopic rod (16) is fixedly connected to the left middle of the fixed slide plate (10) at the left end.

4. The concrete pump truck boom according to claim 1, characterized in that: A connecting rope (17) is fixedly connected to the left side of the bottom of the rotating iron outer frame (8), and a counterweight (18) is fixedly connected to the bottom of the connecting rope (17).

5. The concrete pump truck boom according to claim 1, characterized in that: The input end of the mud pump (5) is connected to the feed inlet (19), and the left end of the feed inlet (19) is fixedly connected to the connecting flange (20).

6. The concrete pump truck boom according to claim 1, characterized in that: The outer walls of both the fixed iron outer frame (4) and the rotating iron outer frame (8) are fixedly connected with multiple diagonal braces (21), and the multiple diagonal braces (21) are fixedly connected in a cross manner.

7. The concrete pump truck boom according to claim 1, characterized in that: The top of the guide connecting block (12) is fixedly connected to a working indicator light (22), which is electrically connected to the mud pump (5).

8. A concrete pump truck, characterized in that: The concrete pump truck includes the boom of any one of claims 1-7.

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