Concrete pump truck capable of reducing gravity center offset

Abstract

The invention relates to the technical field of concrete pump trucks, in particular to a concrete pump truck capable of reducing gravity center offset, an adjusting part comprises a first adjusting part and a second adjusting part, the first adjusting part and the second adjusting part are the same in structure, and the first adjusting part and the second adjusting part are both slidably arranged on the lower surface of a bottom plate; when the gravity center deviates to the first longitudinal guide groove, the first adjusting part and the second adjusting part tend to slide towards the first longitudinal guide groove under the action of self weight, the second adjusting part is limited by the first electric cylinder assembly and cannot slide, and a magnetic attraction part of the first adjusting part slides along a sliding groove, triggers the fourth electric cylinder assembly and pushes the first adjusting part to move towards the second longitudinal guide groove. The gravity center of the concrete pump truck shifts towards the second longitudinal guide groove, the gravity center of the concrete pump truck is balanced, rollover caused by overlarge deflection of the gravity center is prevented, and meanwhile the extending length of supporting legs on the two sides of the bottom plate can be reduced so as to adapt to a smaller operation space.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete pump trucks, and particularly to a concrete pump truck for reducing the center of gravity offset. Background Art

[0002] A concrete pump truck is a construction machinery used for transporting and pouring concrete. It is usually composed of a chassis, a boom system, a pumping system, a hydraulic system, an electrical system, and an auxiliary system. The chassis usually adopts an automotive chassis or a special chassis to provide the mobility and support for the pump truck. It includes components such as a frame, axles, tires, and a suspension system to ensure the stability and maneuverability of the pump truck during driving and working; the boom system is composed of multiple sections of booms connected by hinges, which can perform actions such as folding, extending, and rotating, and can transport concrete to different positions and heights. The length of the boom is an important parameter of the pump truck, and common lengths range from more than 30 meters to more than 60 meters, or even longer; the pumping system mainly consists of a concrete pump, a conveying pipeline, a distribution valve, etc. The concrete pump is the core component, which sucks and pressurizes the concrete from the hopper through mechanisms such as pistons or screws and conveys it into the conveying pipeline; the distribution valve is responsible for controlling the flow direction of the concrete so that the concrete can alternately enter different conveying pipelines; the hydraulic system provides power and control for the actions of the boom and the operation of the pumping system. It consists of an oil pump, an oil cylinder, a hydraulic valve, an oil pipe, etc., and realizes the precise actions and efficient work of each component through the pressure transmission and flow control of hydraulic oil; the electrical system is used to control and monitor various operating parameters and actions of the pump truck, including the start and stop of the engine, the operation of the boom, the adjustment of the pumping speed, etc. It consists of a controller, sensors, relays, wires, etc. to ensure the safe and stable operation of the pump truck; the auxiliary system includes a water tank, a cleaning device, a lubrication system, etc. The water tank is used to provide water for cleaning and cooling; the cleaning device is used to clean components such as the conveying pipeline and the hopper after the work is completed; the lubrication system provides lubrication for each moving part to reduce wear.

[0003] When the concrete pump truck is working, after the concrete mixer truck transports the mixed concrete to the construction site, it unloads the concrete into the hopper of the pump truck. The mixing device in the hopper stirs the concrete to prevent segregation and precipitation. Then, driven by power, the concrete pump of the pumping system sucks and pressurizes the concrete in the hopper through the reciprocating motion of components such as pistons or screws, so that the concrete is conveyed through the conveying pipeline to the hose at the end of the boom. Finally, the operator controls the position and angle of the boom to pour the concrete to the designated position.

[0004] A concrete pump truck with the Chinese patent application number CN201110425798.0 adjusts the center of gravity position of the concrete pump truck by setting a circular second slewing mechanism on the chassis. During the pumping process, when the center of gravity of the concrete pump truck changes, the second slewing mechanism is driven to turn in the opposite direction of the center of gravity to balance the change amount of the center of gravity, thereby reducing the distance of the outrigger deployment to adapt to a smaller operating space. However, when the circular second slewing mechanism is close to the edge of the chassis, its center of gravity is far from the edge of the chassis, resulting in a smaller change amount of the center of gravity, and the corresponding reduced distance after the outrigger is deployed is also small, and the applicable operating space is limited. Moreover, it is necessary to manually judge the offset direction of the center of gravity of the concrete pump truck and then control the second slewing mechanism to turn in the opposite direction of the center of gravity. Manual operation increases potential safety hazards and the judgment is inaccurate. Summary of the Invention

[0005] The main object of the present invention is to provide a concrete pump truck that reduces the offset amount of the center of gravity, so as to solve the problems in the related art that the reduced distance after the outrigger is deployed is small, the applicable operating space is limited, and it is necessary to manually judge the offset direction of the center of gravity of the concrete pump truck, increasing potential safety hazards and the judgment is inaccurate.

[0006] To achieve the above object, according to one aspect of the present invention, there is provided a concrete pump truck that reduces the offset amount of the center of gravity, including a locomotive part for driving the concrete pump truck near the pouring point, and further including: a bottom plate part, the top of the bottom plate part is used to support the strut part, and the bottom is used to support the adjustment part; A strut assembly, the strut assembly includes a plurality of strut parts, the first group of the strut parts are rotatably arranged on the upper surface of the bottom plate part, and two adjacent strut parts are rotatably connected, and the strut parts are used to support the conveying pipe part; A conveying pipe part, the conveying pipe part is fixedly connected to the strut part and is used to convey concrete; An adjustment part, the adjustment part includes a first adjustment part and a second adjustment part, the first adjustment part and the second adjustment part have the same structure, the first adjustment part and the second adjustment part are both slidably arranged on the lower surface of the bottom plate part. When the center of gravity of the concrete pump truck is biased towards the second adjustment part, the second adjustment part remains stationary, and the first adjustment part slides towards the side away from the second adjustment part. When the center of gravity of the concrete pump truck is biased towards the first adjustment part, the first adjustment part remains stationary, and the second adjustment part slides towards the side away from the first adjustment part.

[0007] Further, the locomotive part includes a locomotive and a hopper, and the hopper is fixedly arranged at the rear side of the locomotive and is located above the bottom plate part.

[0008] Further, the bottom plate part includes a bottom plate, a guide groove group, a switch group, and an electric cylinder group. The guide groove group includes a first longitudinal guide groove, a second longitudinal guide groove, a pushing groove, and several transverse guide grooves. The switch group includes a first switch part, a second switch part, a third switch part, and a fourth switch part. The electric cylinder group includes a first electric cylinder assembly, a second electric cylinder assembly, a third electric cylinder assembly, and a fourth electric cylinder assembly. The bottom plate is fixedly arranged behind the locomotive. The first longitudinal guide groove and the second longitudinal guide groove are arranged on both sides of the bottom surface of the bottom plate along the longitudinal direction. The pushing groove and the transverse guide grooves are arranged in the middle of the bottom surface of the bottom plate along the transverse direction. The first switch part, the second switch part, the third switch part, and the fourth switch part are all rotatably arranged on the bottom surface of the bottom plate. The first electric cylinder assembly, the second electric cylinder assembly, the third electric cylinder assembly, and the fourth electric cylinder assembly are all fixedly arranged on the bottom surface of the bottom plate.

[0009] Further, the first switch part, the second switch part, the third switch part, and the fourth switch part have the same structure. The first electric cylinder assembly, the second electric cylinder assembly, the third electric cylinder assembly, and the fourth electric cylinder assembly have the same structure. The first switch part includes a switch body, a connecting shaft, and several ball bearings. The switch body is rotatably arranged on the bottom surface of the bottom plate through the connecting shaft. The ball bearings are all rotatably arranged on the side surface of the switch body. The first electric cylinder assembly includes an electric cylinder body, a telescopic column, two clamping grooves, and several triangular grooves. The electric cylinder body is fixedly connected to the bottom plate. The telescopic column is fixedly connected to the electric cylinder body. The clamping grooves are all arranged at the end of the telescopic column. The triangular grooves are also all arranged at the end of the telescopic column.

[0010] Further, the support rod part includes a support rod, a top support rod, a bottom support rod, and a fifth electric cylinder. The first support rod is rotatably arranged on the bottom plate. The top support rod is fixedly arranged inside the bottom of the support rod. The bottom support rod is fixedly arranged inside the top of the support rod. The top end of the fifth electric cylinder is fixedly connected to the top support rod, and the bottom end is fixedly connected to the bottom support rod. Two adjacent support rods are rotatably connected.

[0011] Further, the conveying pipe part includes a conveying pipe, several clamping rings, and a hose. The conveying pipe is fixedly arranged on the support rod through the clamping rings. One end of the conveying pipe is connected to the feed hopper, and the other end is connected to the hose.

[0012] Further, the first adjustment part includes an adjustment rod, a connection part, and several guide blocks. The connection part is fixedly arranged at the top of the adjustment rod. The guide blocks are all fixedly arranged at the top of the adjustment rod.

[0013] Further, the connection part includes a connection block, a connection groove, a retaining ring, two accommodating grooves, and two sliding grooves. The connection groove is located inside the connection block. The retaining ring is located at the end of the connection groove and is fixedly connected to the connection block. The accommodating grooves are respectively located at the upper and lower ends inside the connection groove. The sliding grooves are respectively located at the upper and lower ends outside the connection groove.

[0014] Further, a magnetic attraction part is arranged in the connection groove. The magnetic attraction part includes a lower magnetic attraction group, an upper magnetic attraction group and a plurality of reset groups. The reset groups are all located between the upper magnetic attraction group and the lower magnetic attraction group. The lower magnetic attraction group and the upper magnetic attraction group have the same structure. The lower magnetic attraction group includes a clamping ring, a magnetic attraction ring, a plurality of triangular blocks and a sliding block. The reset group includes a guide rod and a compression spring.

[0015] Further, the compression spring is sleeved on the outer ring of the guide rod. One end of the compression spring is fixedly connected to the magnetic attraction ring of the upper magnetic attraction group, and the other end is fixedly connected to the magnetic attraction ring of the lower magnetic attraction group. The bottom end of the guide rod is fixedly connected to the magnetic attraction ring of the lower magnetic attraction group, and the top end slides through the magnetic attraction ring of the upper magnetic attraction group. The clamping ring is fixedly arranged at the end of the magnetic attraction ring. The triangular blocks are all fixedly arranged inside the clamping ring and are fixedly connected to the magnetic attraction ring.

[0016] Compared with the prior art, the present invention has the following beneficial effects: when the center of gravity is biased towards the first longitudinal guide groove, the first adjustment part and the second adjustment part tend to slide towards the first longitudinal guide groove under their own weights. However, the second adjustment part is restricted by the first electric cylinder assembly and cannot slide. The magnetic attraction part of the first adjustment part slides along the chute, triggering the fourth electric cylinder assembly, which pushes the first adjustment part towards the second longitudinal guide groove, shifting the center of gravity of the concrete pump truck towards the second longitudinal guide groove, balancing the center of gravity of the concrete pump truck, preventing rollover caused by excessive center of gravity deviation, and at the same time reducing the extended length of the outriggers on both sides of the bottom plate to adapt to a smaller operating space; if the center of gravity is biased towards the first longitudinal guide groove and at the same time towards the second electric cylinder assembly, the cylinder body of the third electric cylinder assembly is activated, pushing the first adjustment part along the second longitudinal guide groove towards the end away from the third switch part to balance the center of gravity of the concrete pump truck. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the whole of the present invention.

[0018] Figure 2 It is a schematic diagram of the bottom plate part of the present invention in a bottom view structure.

[0019] Figure 3 It is a schematic diagram of the switch part of the present invention.

[0020] Figure 4 It is a schematic diagram of the adjustment part of the present invention.

[0021] Figure 5 It is a schematic diagram of the connection part of the present invention.

[0022] Figure 6 It is a sectional view of the connection part of the present invention Figure 1 .

[0023] Figure 7 It is a sectional view of the connection part of the present invention Figure 2 .

[0024] Figure 8 Cross-section of the connection part of the present invention Figure 3 .

[0025] Figure 9 Schematic diagram of the magnetic attraction part structure of the present invention.

[0026] Figure 10 Schematic diagram of the electric cylinder part structure of the present invention.

[0027] Illustration: 1. Locomotive part; 11. Locomotive; 12. Feeding hopper; 2. Bottom plate part; 21. Bottom plate; 22. First longitudinal guide groove; 23. Pushing groove; 24. Transverse guide groove; 25. First switch part; 26. First electric cylinder assembly; 27. Second switch part; 28. Second electric cylinder assembly; 221. Second longitudinal guide groove; 251. Switch body; 252. Coupling shaft; 253. Ball; 261. Electric cylinder body; 262. Telescopic column; 263. Card slot; 264. Triangular groove; 281. Third switch part; 282. Third electric cylinder assembly; 283. Fourth electric cylinder assembly; 284. Fourth switch part; 3. Support rod part; 31. Support rod; 32. Top support rod; 33. Bottom support rod; 34. Fifth electric cylinder; 4. Delivery pipe part; 41. Delivery pipe; 42. Snap ring; 43. Hose; 5. First adjustment part; 51. Adjustment rod; 52. Connection part; 53. Guide block; 521. Connection block; 522. Connection groove; 523. Retaining ring; 524. Accommodation groove; 525. Slide groove; 6. Magnetic attraction part; 61. Lower magnetic attraction group; 62. Upper magnetic attraction group; 63. Snap ring; 64. Magnetic attraction ring; 65. Triangular block; 66. Slide block; 67. Reset group; 68. Guide rod; 69. Compression spring; 7. Second adjustment part. Specific embodiments

[0028] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in combination with the accompanying drawings and preferred embodiments, details the specific embodiments, structures, features and their effects of the present invention as follows.

[0029] Please refer to Figures 1 to 10 , this embodiment provides a concrete pump truck for reducing the center of gravity offset amount, including a locomotive part 1, and the locomotive part 1 is used to drive the concrete pump truck near the pouring point. It also includes: a bottom plate part 2, the top of the bottom plate part 2 is used to support the support rod part 3, and the bottom is used to support the adjustment part; The support rod assembly includes several support rod parts 3. The first group of support rod parts 3 are rotatably arranged on the upper surface of the bottom plate part 2, and two adjacent support rod parts 3 are rotatably connected. The support rod parts 3 are used to support the conveying pipe part 4; The conveying pipe part 4 is fixedly connected to the support rod part 3 and is used to convey concrete; The adjustment part includes a first adjustment part 5 and a second adjustment part 7. The first adjustment part 5 and the second adjustment part 7 have the same structure. The first adjustment part 5 and the second adjustment part 7 are both slidably arranged on the lower surface of the bottom plate part 2. When the center of gravity of the concrete pump truck biases towards the second adjustment part 7, the second adjustment part 7 remains stationary, and the first adjustment part 5 slides towards the side away from the second adjustment part 7. When the center of gravity of the concrete pump truck biases towards the first adjustment part 5, the first adjustment part 5 remains stationary, and the second adjustment part 7 slides towards the side away from the first adjustment part 5.

[0030] The locomotive part 1 includes a locomotive 11 and a feed hopper 12. The feed hopper 12 is fixedly arranged at the rear side of the locomotive 11 and is located above the bottom plate part 2.

[0031] The bottom plate part 2 includes a bottom plate 21, a guide groove group, a switch group and an electric cylinder group. The guide groove group includes a first longitudinal guide groove 22, a second longitudinal guide groove 221, a pushing groove 23 and several transverse guide grooves 24. The switch group includes a first switch part 25, a second switch part 27, a third switch part 281 and a fourth switch part 284. The electric cylinder group includes a first electric cylinder assembly 26, a second electric cylinder assembly 28, a third electric cylinder assembly 282 and a fourth electric cylinder assembly 283. The bottom plate 21 is fixedly arranged behind the locomotive 11. The first longitudinal guide groove 22 and the second longitudinal guide groove 221 are arranged along the longitudinal direction on both sides of the bottom surface of the bottom plate 21. The pushing groove 23 and the transverse guide grooves 24 are arranged along the transverse direction in the middle of the bottom surface of the bottom plate 21. The first switch part 25, the second switch part 27, the third switch part 281 and the fourth switch part 284 are all rotatably arranged on the bottom surface of the bottom plate 21. The first electric cylinder assembly 26, the second electric cylinder assembly 28, the third electric cylinder assembly 282 and the fourth electric cylinder assembly 283 are all fixedly arranged on the bottom surface of the bottom plate 21.

[0032] The first switch part 25, the second switch part 27, the third switch part 281 and the fourth switch part 284 have the same structure. The first electric cylinder assembly 26, the second electric cylinder assembly 28, the third electric cylinder assembly 282 and the fourth electric cylinder assembly 283 have the same structure. The first switch part 25 includes a switch body 251, a connecting shaft 252 and several balls 253. The switch body 251 is rotatably arranged on the bottom surface of the bottom plate 21 through the connecting shaft 252. The balls 253 are all rotatably arranged on the side surface of the switch body 251. The first electric cylinder assembly 26 includes an electric cylinder body 261, a telescopic column 262, two clamping grooves 263 and several triangular grooves 264. The electric cylinder body 261 is fixedly connected to the bottom plate 21. The telescopic column 262 is fixedly connected to the electric cylinder body 261. The clamping grooves 263 are all arranged at the end of the telescopic column 262. The triangular grooves 264 are also all arranged at the end of the telescopic column 262.

[0033] The support rod part 3 includes a support rod 31, a top support rod 32, a bottom support rod 33 and a fifth electric cylinder 34. The first support rod 31 is rotatably arranged on the bottom plate 21. The top support rod 32 is fixedly arranged inside the bottom of the support rod 31. The bottom support rod 33 is fixedly arranged inside the top of the support rod 31. The top end of the fifth electric cylinder 34 is fixedly connected to the top support rod 32, and the bottom end is fixedly connected to the bottom support rod 33. Two adjacent support rods 31 are rotatably connected.

[0034] The conveying pipe part 4 includes a conveying pipe 41, a plurality of clamping rings 42 and a hose 43. The conveying pipe 41 is fixedly arranged on the support rod 31 through the clamping rings 42. One end of the conveying pipe 41 is connected to the feeding hopper 12, and the other end is connected to the hose 43.

[0035] The first adjustment part 5 includes an adjustment rod 51, a connection part 52 and a plurality of guide blocks 53. The connection part 52 is fixedly arranged on the top of the adjustment rod 51. The guide blocks 53 are all fixedly arranged on the top of the adjustment rod 51.

[0036] The connection part 52 includes a connection block 521, a connection groove 522, a retaining ring 523, two receiving grooves 524 and two sliding grooves 525. The connection groove 522 is located inside the connection block 521. The retaining ring 523 is located at the end of the connection groove 522 and is fixedly connected to the connection block 521. The receiving grooves 524 are respectively located at the upper and lower ends inside the connection groove 522. The sliding grooves 525 are respectively located at the upper and lower ends outside the connection groove 522.

[0037] A magnetic attraction part 6 is arranged in the connection groove 522. The magnetic attraction part 6 includes a lower magnetic attraction group 61, an upper magnetic attraction group 62 and a plurality of reset groups 67. The reset groups 67 are all located between the upper magnetic attraction group 62 and the reset groups 67. The lower magnetic attraction group 61 and the upper magnetic attraction group 62 have the same structure. The lower magnetic attraction group 61 includes a clamping ring 63, a magnetic attraction ring 64, a plurality of triangular blocks 65 and a slider 66. The reset group 67 includes a guide rod 68 and a compression spring 69.

[0038] The compression spring 69 is sleeved on the outer ring of the guide rod 68. One end of the compression spring 69 is fixedly connected to the magnetic attraction ring 64 of the upper magnetic attraction group 62, and the other end is fixedly connected to the magnetic attraction ring 64 of the lower magnetic attraction group 61. The bottom end of the guide rod 68 is fixedly connected to the magnetic attraction ring 64 of the lower magnetic attraction group 61, and the top end slides through the magnetic attraction ring 64 of the upper magnetic attraction group 62. The clamping ring 63 is fixedly arranged at the end of the magnetic attraction ring 64. The triangular blocks 65 are all fixedly arranged inside the clamping ring 63 and are fixedly connected to the magnetic attraction ring 64.

[0039] A stirring mechanism for stirring concrete is installed in the feeding hopper 12. The stirring mechanism includes a motor, a stirring shaft, and stirring blades. The motor is fixedly installed on the side wall of the feeding hopper 12. The output shaft of the motor is fixedly connected to the stirring shaft, and the stirring shaft is fixedly connected to the stirring blades. The motor drives the stirring blades to rotate through the stirring shaft to stir the concrete in the feeding hopper 12, prevent the concrete from segregation, delay the setting time, prevent the delivery pipe 41 from being blocked, and improve the pumping efficiency. A pumping cylinder is installed at the connection between the feeding hopper 12 and the delivery pipe 41 to pump the concrete in the feeding hopper 12 into the delivery pipe 41 and discharge it to the pouring point through the hose 43, completing the pumping of the concrete.

[0040] When the center of gravity of the concrete pump truck is centered, the first adjustment part 5 and the second adjustment part 7 are close to the middle of the bottom plate 21. The circuit of the magnetic attraction ring 64 is turned on, and it is stuck on the outer ring of the telescopic column 262. The clamping ring 63 is stuck in the clamping groove 263, and the triangular block 65 is stuck in the corresponding triangular groove 264 to fix the second adjustment part 7 at the end of the first electric cylinder assembly 26 and the first adjustment part at the end of the fourth electric cylinder assembly 283.

[0041] Start the locomotive 11, drive the concrete pump truck near the pouring point, adjust the angle so that the tail of the bottom plate 21 is aligned with the pouring point, drive the mixer truck loaded with concrete near the concrete pump truck, adjust the angle of the concrete mixer truck so that its tail is facing the feeding hopper 12 directly, and the discharge chute of the concrete mixer truck is located above the feeding hopper 12. Start the fifth electric cylinder 34 on the first strut 31 connected to the bottom plate 21. The telescopic rod of the fifth electric cylinder 34 extends, and through the jacking rod 32, it pushes the second strut 31 to rotate counterclockwise around the top of the first strut 31 and open. In the same way, open all the struts 31, and the conveying pipe 41 extends along with the opened struts 31, so that the hose 43 is located above the pouring point. Open the valve at the discharge port of the concrete mixer truck, and the concrete flows out from the discharge chute and falls into the feeding hopper 12. Start the motor of the mixing mechanism and the pumping cylinder. The motor drives the mixing blades to rotate to mix the concrete, and the pumping cylinder pumps the concrete in the feeding hopper 12 into the conveying pipe 41, and finally discharges it to the pouring point through the hose 43. During the pouring process, due to the continuous change of the opening angle and the rotation angle of the struts 31, the center of gravity of the concrete pump truck changes continuously. When the center of gravity deviates towards the first longitudinal guide groove 22, the first adjustment part 5 and the second adjustment part 7 tend to slide towards the first longitudinal guide groove 22 under their own weights, but the second adjustment part 7 is restricted by the first electric cylinder assembly 26 and cannot slide. The magnetic part 6 of the first adjustment part 5 slides along the chute 525, so that the connecting block 521 touches the fourth switch part 284. The fourth switch part 284 controls the electric cylinder body 261 of the fourth electric cylinder assembly 283 to start, and its telescopic rod extends, pushing the first adjustment part 5 towards the second longitudinal guide groove 221, shifting the center of gravity of the concrete pump truck towards the second longitudinal guide groove 221, balancing the center of gravity of the concrete pump truck, preventing it from tipping over due to excessive center of gravity deviation, and at the same time reducing the extended length of the legs on both sides of the bottom plate 21 to adapt to a smaller operating space. If the center of gravity deviates towards the first longitudinal guide groove 22 and at the same time towards the second electric cylinder assembly 28, when the first adjustment part 5 is pushed to the side wall of the first longitudinal guide groove 22, the slider 66 is located below the receiving groove 524. The side wall of the first longitudinal guide groove 22 squeezes the switch of the first adjustment part 5, disconnecting the circuit in the magnetic ring 64, and the magnetism of the magnetic ring 64 disappears. The compression spring 69 rebounds, pushing the clamping ring 63 away from the clamping groove 263 and the triangular block 65 away from the triangular groove 264, and the slider 66 enters the top of the receiving groove 524. The first adjustment part 5 slides towards the third switch part 281 under its own weight. When the third switch part 281 touches the third switch part 281, the electric cylinder body 261 of the third electric cylinder assembly 282 is started, pushing the first adjustment part 5 to move along the second longitudinal guide groove 221 towards the end away from the third switch part 281 to balance the center of gravity of the concrete pump truck;Similarly, when the center of gravity of the concrete pump truck is biased towards one side of the second longitudinal guide groove 221 or, while being biased towards one side of the second longitudinal guide groove 221, is also biased towards one end of the third switch portion 281, the first electric cylinder assembly 26 and the second electric cylinder assembly 28 act together to push the second adjustment portion 7 along the first longitudinal guide groove 22 towards the end far from the second electric cylinder assembly 28 to balance the center of gravity of the concrete pump truck; because the conveying pipe 41 pours concrete backward, the center of gravity of the concrete pump truck will only shift towards one end of the second electric cylinder assembly 28 and will not shift towards the hopper 12 direction.

[0042] The above are only the preferred embodiments of the present invention and do not impose any formal limitations on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A concrete pump truck with reduced center of gravity offset, comprising a locomotive part (1), wherein the locomotive part (1) is used to drive the concrete pump truck to the vicinity of a pouring point, characterized in that: Also includes: A bottom plate portion (2), wherein the top of the bottom plate portion (2) is used to support the support rod portion (3), and the bottom of the bottom plate portion (2) is used to support the adjustment portion; A support rod assembly, the support rod assembly comprising a plurality of support rod portions (3), a first group of the support rod portions (3) being rotatably disposed on the upper surface of the bottom plate portion (2), two adjacent support rod portions (3) being rotatably connected, and the support rod portions (3) being used to support the conveying pipe portion (4); A conveying pipe portion (4), the conveying pipe portion (4) being fixedly connected to the support rod portion (3) and being used for conveying concrete; The adjustment part comprises a first adjustment part (5) and a second adjustment part (7), the first adjustment part (5) and the second adjustment part (7) having the same structure, the first adjustment part (5) and the second adjustment part (7) being both slidably arranged on the lower surface of the bottom plate part (2), when the center of gravity of the concrete pump truck is biased toward the second adjustment part (7), the second adjustment part (7) is stationary and the first adjustment part (5) slides toward a side away from the second adjustment part (7); when the center of gravity of the concrete pump truck is biased toward the first adjustment part (5), the first adjustment part (5) is stationary and the second adjustment part (7) slides toward a side away from the first adjustment part (5).

2. The concrete pump truck with reduced center of gravity offset according to claim 1, characterized in that: The locomotive part (1) comprises a locomotive (11) and a feed hopper (12); the feed hopper (12) is fixedly arranged on the rear side of the locomotive (11) and is located above the bottom plate part (2).

3. The concrete pump truck with reduced center of gravity offset according to claim 2, characterized in that: The bottom plate portion (2) comprises a bottom plate (21), a guide groove group, a switch group and an electric cylinder group; the guide groove group comprises a first longitudinal guide groove (22), a second longitudinal guide groove (221), a push groove (23) and a plurality of transverse guide grooves (24); the switch group comprises a first switch portion (25), a second switch portion (27), a third switch portion (281) and a fourth switch portion (284); the electric cylinder group comprises a first electric cylinder assembly (26), a second electric cylinder assembly (28), a third electric cylinder assembly (282) and a fourth electric cylinder assembly (283); the bottom plate (21) is fixedly arranged on a locomotive ( 11), the first longitudinal guide groove (22) and the second longitudinal guide groove (221) are longitudinally arranged on both sides of the bottom surface of the bottom plate (21), the push groove (23) and the transverse guide groove (24) are transversely arranged in the middle of the bottom surface of the bottom plate (21), the first switch part (25), the second switch part (27), the third switch part (281) and the fourth switch part (284) are all rotatably arranged on the bottom surface of the bottom plate (21), and the first electric cylinder assembly (26), the second electric cylinder assembly (28), the third electric cylinder assembly (282) and the fourth electric cylinder assembly (283) are all fixedly arranged on the bottom surface of the bottom plate (21).

4. The concrete pump truck with reduced center of gravity offset according to claim 3, characterized in that: The first switch part (25), the second switch part (27), the third switch part (281) and the fourth switch part (284) have the same structure; the first electric cylinder assembly (26), the second electric cylinder assembly (28), the third electric cylinder assembly (282) and the fourth electric cylinder assembly (283) have the same structure; the first switch part (25) comprises a switch body (251), a connecting shaft (252) and a plurality of balls (253); the switch body (251) is rotatably arranged on the bottom surface of the bottom plate (21) via the connecting shaft (252); The balls (253) are all rotatably arranged on the side of the switch body (251); the first electric cylinder assembly (26) comprises an electric cylinder body (261), a telescopic column (262), two clamping grooves (263) and a plurality of triangular grooves (264); the electric cylinder body (261) is fixedly connected to the bottom plate (21); the telescopic column (262) is fixedly connected to the electric cylinder body (261); the clamping grooves (263) are all arranged at the end of the telescopic column (262); and the triangular grooves (264) are also all arranged at the end of the telescopic column (262).

5. The concrete pump truck with reduced center of gravity offset according to claim 3, characterized in that: The support rod portion (3) comprises a support rod (31), a top supporting rod (32), a bottom supporting rod (33) and a fifth electric cylinder (34); the first support rod (31) is rotatably arranged on the bottom plate (21); the top supporting rod (32) is fixedly arranged on the inner side of the bottom of the support rod (31); the bottom supporting rod (33) is fixedly arranged on the inner side of the top of the support rod (31); the top end of the fifth electric cylinder (34) is fixedly connected to the top supporting rod (32) and the bottom end is fixedly connected to the bottom supporting rod (33); and two adjacent support rods (31) are rotatably connected.

6. The concrete pump truck with reduced center of gravity offset according to claim 5, characterized in that: The delivery pipe portion (4) comprises a delivery pipe (41), a plurality of clamping rings (42) and a hose (43); the delivery pipe (41) is fixed to the support rod (31) via the clamping ring (42); one end of the delivery pipe (41) is connected to the feed hopper (12), and the other end is connected to the hose (43).

7. The concrete pump truck with reduced center of gravity offset according to claim 1, characterized in that: The first adjustment portion (5) comprises an adjustment rod (51), a connection portion (52) and a plurality of guide blocks (53); the connection portion (52) is fixedly arranged on the top of the adjustment rod (51); and the guide blocks (53) are all fixedly arranged on the top of the adjustment rod (51).

8. The concrete pump truck with reduced center of gravity offset according to claim 7, characterized in that: The connecting portion (52) comprises a connecting block (521), a connecting groove (522), a retaining ring (523), two receiving grooves (524) and two sliding grooves (525); the connecting groove (522) is located inside the connecting block (521); the retaining ring (523) is located at the end of the connecting groove (522) and is fixedly connected to the connecting block (521); the receiving grooves (524) are respectively located at the upper and lower ends of the inner side of the connecting groove (522); and the sliding grooves (525) are respectively located at the upper and lower ends of the outer side of the connecting groove (522).

9. The concrete pump truck with reduced center of gravity offset according to claim 8, characterized in that: A magnetic attraction portion (6) is provided in the connection groove (522), the magnetic attraction portion (6) comprising a lower magnetic attraction group (61), an upper magnetic attraction group (62) and a plurality of reset groups (67), the reset groups (67) being located between the upper magnetic attraction group (62) and the reset groups (67), the lower magnetic attraction group (61) and the upper magnetic attraction group (62) having the same structure, the lower magnetic attraction group (61) comprising a clamping ring (63), a magnetic attraction ring (64), a plurality of triangular blocks (65) and a sliding block (66), and the reset group (67) comprising a guide rod (68) and a compression spring (69).

10. The concrete pump truck with reduced center of gravity offset according to claim 9, characterized in that: The compression spring (69) is sleeved on the outer ring of the guide rod (68); one end of the compression spring (69) is fixedly connected to the magnetic ring (64) of the upper magnetic group (62), and the other end is fixedly connected to the magnetic ring (64) of the lower magnetic group (61); the bottom end of the guide rod (68) is fixedly connected to the magnetic ring (64) of the lower magnetic group (61), and the top end slides through the magnetic ring (64) of the upper magnetic group (62); the clamping ring (63) is fixedly arranged at the end of the magnetic ring (64); and the triangular blocks (65) are fixedly arranged inside the clamping ring (63) and fixedly connected to the magnetic ring (64).

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