A turntable device for concrete pump truck

Abstract

The utility model relates to the technical field of concrete pump truck turntables, specifically a concrete pump truck turntable device, including a concrete pump truck turntable and a rotary gear, the rotary gear is connected to the concrete pump truck turntable, a mud delivery pipe connected to the rotary gear is arranged between the concrete pump truck turntables, and an anti-condensation mechanism is arranged in the mud delivery pipe to prevent concrete from condensing in the mud delivery pipe; the anti-condensation mechanism includes a stirring assembly and an anti-condensation assembly, the stirring assembly is arranged in the mud delivery pipe and can rotate to stir concrete, and the anti-condensation assembly is arranged on the stirring assembly to prevent concrete from condensing on the stirring assembly. In the utility model, the concrete in the mud delivery pipe can be stirred and mixed by the rotating shaft and stirring blades connected in the mud delivery pipe, and the rotation of the stirring blades generates centrifugal force to make the scraper move from the guide rod close to the rotating shaft to the end away from the rotating shaft, so as to prevent the concrete from adhering to and condensing on the stirring blades.

Description

Technical Field

[0001] The utility model relates to the technical field of turntables for concrete pump trucks, in particular to a turntable device for concrete pump trucks. Background Art

[0002] The turntable serves as the base of the pump truck boom. It is a structural member welded from high-strength steel plates. Its upper part is hinged to the boom with a boom connecting sleeve, and its lower part is connected to the slewing bearing with high-strength bolts. It mainly bears the boom load and can rotate in the horizontal plane with the boom.

[0003] After searching, the Chinese patent with publication number CN213898165U discloses a concrete pump truck turntable with an anti-condensation structure for easy adjustment, including a concrete pump truck turntable and a stirring blade, fixed frames are fixed on both sides of the concrete pump truck turntable, and a rotary gear is arranged at the bottom of the concrete pump truck turntable, a mud delivery pipe is distributed on the inner side of the concrete pump truck turntable, and the upper outer wall of the mud delivery pipe is fitted with a limit sleeve, connecting rods are connected to both sides of the limit sleeve, and bolts are arranged at the connection of the limit sleeve, and nuts are fitted on the outer wall of the end of the bolt, and a placement box is arranged below the concrete pump truck turntable. The concrete pump truck turntable with an anti-condensation structure for easy adjustment is provided with a transmission shaft, and the transmission shaft and the driven shaft are fitted with each other, and the motor is started to drive the transmission shaft to rotate. Since the transmission shaft and the driven shaft are fitted with each other, the driven shaft rotates synchronously to provide power for the rotation of the rotating shaft, and the motor power is stable, which is easy to maintain in the later stage, and is suitable for providing power for the stirring blade.

[0004] However, in the above technical solution, a rotating shaft is arranged in the mud conveying pipe, and power is transmitted through a motor and multiple gears to drive the rotating shaft to rotate, thereby rotating the rotating blades to avoid concrete solidification. However, the rotating blades will continue to be in contact with the concrete, and after the concrete is discharged, concrete is likely to adhere to the rotating blades. The concrete solidification on the rotating blades will increase the power required for the rotating blades to rotate. At the same time, the surface of the solidified concrete is rough and it is easy for more concrete to solidify and adhere to it. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and proposes a turntable device for a concrete pump truck.

[0006] The technical solution of the utility model is as follows: a turntable device for a concrete pump truck comprises a turntable for a concrete pump truck and a rotary gear, wherein the rotary gear is connected to the turntable for the concrete pump truck, a mud delivery pipe connected to the rotary gear is arranged between the turntables for the concrete pump truck, and an anti-condensation mechanism is arranged in the mud delivery pipe to prevent concrete from condensing in the mud delivery pipe;

[0007] The anti-condensation mechanism comprises a stirring assembly and an anti-condensation assembly. The stirring assembly is arranged in the mud conveying pipe and can rotate to stir concrete. The anti-condensation assembly is arranged on the stirring assembly and can prevent concrete from condensing on the stirring assembly.

[0008] Preferably, the stirring assembly includes an installation box, a motor, a connecting pipe, a flange, a rotating shaft, stirring blades and a transmission assembly capable of driving the rotating shaft to rotate, the installation box is connected to the rotary gear, the motor is connected in the installation box, the output end of the motor is connected to the transmission assembly, a notch is provided on the mud conveying pipe, flanges are connected at both ends of the connecting pipe, the flanges are flange-connected to the notch of the mud conveying pipe, both ends of the rotating shaft are rotatably connected in the connecting pipe, circumferentially distributed stirring blades are connected to the rotating shaft, and either end of the rotating shaft passes through the connecting pipe and the installation box for connection to the transmission assembly.

[0009] Preferably, the transmission assembly includes an output shaft, a driving gear and a driven gear. The output shaft is connected to the output end of the motor, the output shaft is connected to the driving gear, and the driving gear is meshed and transmission-connected with the driven gear connected to the rotating shaft.

[0010] Preferably, the anti-condensation component includes a fixed block, a first spring, a guide rod, a scraper and a knocking component that can prevent the concrete in the mud pipe from condensing. Several fixed blocks are connected to both sides of the mixing blade, and multiple evenly distributed fixed blocks are connected to the two ends of the same side of the mixing blade. The fixed blocks are used to be connected to the guide rod, the scraper is slidably connected to the guide rod, the first spring is sleeved on the guide rod, and the two ends of the first spring are connected to the scraper and the fixed block.

[0011] Preferably, the knocking assembly includes a rotating disk, an arc block, a roller, a connecting rod, a mounting block, a second spring, an impact plate and an adjusting bolt. The rotating disk is connected to the rotating shaft, and one end of the rotating disk close to the mud pipe is connected to a plurality of arc blocks, and both sides of the mud pipe are connected to symmetrically arranged mounting blocks, one end of the second spring is connected to the mounting block, and the other end of the second spring is connected to an arc-shaped impact block, both ends of the impact block close to the rotating disk are connected to connecting rods, and the connecting rod is connected to a roller slidably connected to the arc block, and the adjusting bolt is threadedly connected to the impact block.

[0012] Preferably, the outer circumferential surface of the mud delivery pipe is provided with symmetrically arranged semicircular limit sleeves, which are spliced ​​to form an annular limit frame to limit the shaking of the mud delivery pipe, and both ends of the limit sleeve are connected with protrusions, and the protrusions are provided with through holes for fixing bolts to pass through. The fixing bolts pass through the through holes on the protrusions and are connected with nuts, and the outer circumferential surface of the limit sleeve is connected to the fixing rod connected to the turntable of the concrete pump truck.

[0013] Preferably, a protective pad is connected inside the limiting sleeve.

[0014] Compared with the prior art, the above technical solution of the utility model has the following beneficial technical effects:

[0015] The utility model can stir and mix concrete in the mud delivery pipe by means of the rotating shaft and the stirring blades connected in the mud delivery pipe. The rotation of the stirring blades keeps the concrete in the mud delivery pipe in a flowing state at all times to prevent it from condensing. The anti-condensation components arranged on both sides of the stirring blades move when the stirring blades rotate. The rotation of the stirring blades generates centrifugal force to make the scraper move from the end of the guide rod close to the rotating shaft to the end away from the rotating shaft. When the scraper moves, the concrete attached to the stirring blades can be cleaned to prevent the concrete from adhering to and condensing on the stirring blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the stirring blade structure;

[0018] Figure 3 for Figure 1 A schematic cross-sectional structure diagram of ;

[0019] Figure 4 for Figure 3 A magnified view of the structure at A.

[0020] Figure numerals: 1. turntable of concrete pump truck; 2. slewing gear; 3. mud delivery pipe; 4. installation box; 5. motor; 8. rotating shaft; 9. stirring blade; 10. output shaft; 11. driving gear; 12. driven gear; 13. fixing block; 14. first spring; 15. guide rod; 16. scraper; 17. rotating disk; 18. arc block; 19. roller; 20. connecting rod; 21. installation block; 22. second spring; 23. impact block; 24. adjusting bolt; 25. limiting sleeve; 26. fixing bolt; 27. nut; 28. fixing rod; 29. ​​protective pad. DETAILED DESCRIPTION

[0021] Embodiment 1

[0022] like Figure 1-Figure 4 As shown, the utility model proposes a concrete pump truck turntable 1 device, comprising a concrete pump truck turntable 1 and a rotary gear 2, the rotary gear 2 is connected to the concrete pump truck turntable 1, and a mud delivery pipe 3 connected to the rotary gear 2 is arranged between the concrete pump truck turntable 1, and an anti-condensation mechanism capable of preventing concrete from condensing in the mud delivery pipe 3 is arranged in the mud delivery pipe 3;

[0023] The anti-condensation mechanism includes a stirring assembly and an anti-condensation assembly. The stirring assembly is arranged in the mud conveying pipe 3 and can rotate to stir concrete. The anti-condensation assembly is arranged on the stirring assembly and can prevent concrete from condensing on the stirring assembly.

[0024] In the utility model, the concrete in the mud conveying pipe 3 can be stirred and mixed by the rotating shaft 8 and the stirring blades 9 connected in the mud conveying pipe 3. The rotation of the stirring blades 9 keeps the concrete in the mud conveying pipe 3 in a flowing state to prevent it from condensing. The anti-condensation components arranged on both sides of the stirring blades 9 move when the stirring blades 9 rotate. The rotation of the stirring blades 9 generates centrifugal force to make the scraper 16 move from the guide rod 15 close to the rotating shaft 8 to the end away from the rotating shaft 8. When the scraper 16 moves, the concrete attached to the stirring blades 9 can be cleaned to prevent the concrete from being attached and condensed on the stirring blades 9.

[0025] Embodiment 2

[0026] like Figure 2-Figure 3 As shown, a concrete pump truck turntable device proposed by the utility model, compared with the first embodiment, in this embodiment, the stirring assembly includes a mounting box 4, a motor 5, a connecting pipe, a flange, a rotating shaft 8, a stirring blade 9 and a transmission assembly capable of driving the rotating shaft 8 to rotate, the mounting box 4 is connected to the rotary gear 2, the motor 5 is connected in the mounting box 4, the output end of the motor 5 is connected to the transmission assembly, a notch is provided on the mud delivery pipe 3, both ends of the connecting pipe are connected with flanges, the flanges are connected to the notch flange of the mud delivery pipe 3, both ends of the rotating shaft 8 are rotatably connected in the connecting pipe, the rotating shaft 8 is connected with stirring blades 9 distributed circumferentially, and any end of the rotating shaft 8 passes through the connecting pipe and the mounting box 4 for connection with the transmission assembly. When the concrete pump truck is working, the motor 5 in the mounting box 4 is started and drives the transmission assembly to move, the transmission assembly transmits the power generated by the motor 5 to the rotating shaft 8 of the connecting pipe to rotate the rotating shaft 8, and the stirring blades 9 on the rotating shaft 8 rotate to stir the concrete in the mud delivery pipe 3 to prevent it from coagulating.

[0027] The transmission assembly includes an output shaft 10, a driving gear 11 and a driven gear 12. The output shaft 10 is connected to the output end of the motor 5. The driving gear 11 is connected to the output shaft 10. The driving gear 11 is meshed and transmission-connected with the driven gear 12 connected to the rotating shaft 8. After the motor 5 in the installation box 4 is started, its output end rotates, and the output end of the motor 5 drives the output shaft 10 to rotate and the driving gear 11 to rotate. The driving gear 11 rotates and drives the driven gear 12 and the rotating shaft 8 to rotate through gear meshing.

[0028] Embodiment 3

[0029] like Figure 2-Figure 4As shown, a concrete pump truck turntable device proposed by the utility model, compared with the second embodiment, in this embodiment, the anti-condensation component includes a fixed block 13, a first spring 14, a guide rod 15, a scraper 16 and a knocking component capable of preventing the concrete in the mud delivery pipe 3 from condensing, a plurality of fixed blocks 13 are connected to both sides of the mixing blade 9, a plurality of evenly distributed fixed blocks 13 are connected to the two ends of the same side of the mixing blade 9, the fixed blocks 13 are used to connect with the guide rod 15, the scraper 16 is slidably connected to the guide rod 15, the first spring 14 is sleeved on the guide rod 15, and the two ends of the first spring 14 are connected to the scraper 16 and the fixed block 13. When the motor 5 drives the rotating shaft 8 and the mixing blade 9 to rotate, the mixing blade 9 rotates to generate centrifugal force, the centrifugal force stretches the first spring 14 and drives the scraper 16 to move along the axis of the guide rod 15, the scraper 16 moves from the inside to the outside to remove the concrete remaining on the mixing blade 9, and when the motor 5 stops, the centrifugal force disappears and the first spring 14 rebounds to retract the scraper 16.

[0030] The knocking assembly includes a rotating disk 17, an arc block 18, a roller 19, a connecting rod 20, a mounting block 21, a second spring 22, an impact block 23 and an adjusting bolt 24. The rotating disk 17 is connected to the rotating shaft 8. The rotating disk 17 is connected to a plurality of arc blocks 18 at one end close to the mud conveying pipe 3. The mud conveying pipe 3 is connected to symmetrically arranged mounting blocks 21 on both sides. One end of the second spring 22 is connected to the mounting block 21, and the other end of the second spring 22 is connected to an arc-shaped impact block 23. The impact block 23 is connected to connecting rods 20 at both ends of the side close to the rotating disk 17. The connecting rod 20 is connected to the roller 19 slidably connected to the arc block 18, and the adjusting bolt 24 is threadedly connected to the impact block 23. When the rotating shaft 8 rotates and drives the rotating disk 17 to rotate, the arc block 18 on the rotating disk 17 rotates so that its high point contacts the roller 19, and the roller 19 moves horizontally to drive the impact block 23 to move and stretch the second spring 22 through the mounting block 21 connected to the second spring 22. When the roller 19 moves to the lower part of the arc block 18, the second spring 22 rebounds and pulls the impact block 23 to quickly recover and collide with the mud pipe 3. The collision between the two generates vibration to shake off the concrete attached to the mud pipe 3, preventing it from condensing and reducing the available volume in the mud pipe 3. After the adjusting bolt 24 passes through the impact block 23 and rotates one end distance, the impact block 23 can be moved away from the mud pipe 3, and the contact between the roller 19 and the arc block 18 can be limited, so that the mixing work can be carried out normally without damaging the mud pipe 3 due to excessive knocking.

[0031] Embodiment 4

[0032] like Figure 1-Figure 2As shown, a concrete pump truck turntable device proposed by the utility model, compared with the third embodiment, in this embodiment, the outer circumference of the mud delivery pipe 3 is provided with symmetrically arranged semicircular limiting sleeves 25, the limiting sleeves 25 are spliced ​​to form a circular limiting frame to limit the shaking of the mud delivery pipe 3, and both ends of the limiting sleeve 25 are connected with protrusions, and the protrusions are provided with through holes for the fixing bolts 26 to pass through, and the fixing bolts 26 pass through the through holes on the protrusions and are connected with nuts 27, and the outer circumference of the limiting sleeve 25 is connected with the fixing rod 28 connected to the turntable 1 of the concrete pump truck. Two semicircular limiting sleeves 25 are sleeved on the mud delivery pipe 3, and the fixing bolts 26 are passed through the protrusions at both ends of the limiting sleeve 25 and connected with the nuts 27 to fix it. The restriction of the fixing rod 28 and the limiting sleeve 25 can prevent the mud delivery pipe 3 from shaking to a large extent.

[0033] A protective pad 29 is connected inside the limiting sleeve 25. The protective pad 29 is made of metal copper, which is softer than steel. When the protective pad 29 collides with the mud pipe 3, the protective pad 29 is squeezed and deformed, and the limiting sleeve 25 avoids direct collision with the mud pipe 3 to cause damage to the mud pipe 3.

[0034] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A turntable device for a concrete pump truck, characterized in that: The invention comprises a concrete pump truck turntable (1) and a rotary gear (2), wherein the rotary gear (2) is connected to the concrete pump truck turntable (1), a mud delivery pipe (3) connected to the rotary gear (2) is arranged between the concrete pump truck turntable (1), and an anti-condensation mechanism capable of preventing concrete from condensing in the mud delivery pipe (3) is arranged in the mud delivery pipe (3); The anti-condensation mechanism comprises a stirring assembly and an anti-condensation assembly. The stirring assembly is arranged in the mud conveying pipe (3) and can rotate to stir concrete. The anti-condensation assembly is arranged on the stirring assembly and can prevent concrete from condensing on the stirring assembly.

2. A turntable device for a concrete pump truck according to claim 1, characterized in that: The stirring assembly comprises an installation box (4), a motor (5), a connecting pipe, a flange, a rotating shaft (8), stirring blades (9) and a transmission assembly capable of driving the rotating shaft (8) to rotate. The installation box (4) is connected to the rotary gear (2), the motor (5) is connected in the installation box (4), the output end of the motor (5) is connected to the transmission assembly, a notch is provided in the mud conveying pipe (3), both ends of the connecting pipe are connected to flanges, the flanges are flange-connected to the notch of the mud conveying pipe (3), both ends of the rotating shaft (8) are rotatably connected in the connecting pipe, the rotating shaft (8) is connected to stirring blades (9) distributed circumferentially, and any end of the rotating shaft (8) passes through the connecting pipe and the installation box (4) for connection with the transmission assembly.

3. A turntable device for a concrete pump truck according to claim 2, characterized in that: The transmission assembly comprises an output shaft (10), a driving gear (11) and a driven gear (12); the output shaft (10) is connected to the output end of the motor (5); the output shaft (10) is connected to the driving gear (11); the driving gear (11) is meshed and transmission-connected with the driven gear (12) connected to the rotating shaft (8).

4. A turntable device for a concrete pump truck according to claim 2, characterized in that: The anti-condensation component comprises a fixed block (13), a first spring (14), a guide rod (15), a scraper (16) and a knocking component capable of preventing concrete in a mud conveying pipe (3) from condensing. A plurality of fixed blocks (13) are connected to both sides of a mixing blade (9). A plurality of evenly distributed fixed blocks (13) are connected to two ends of the same side of the mixing blade (9). The fixed blocks (13) are used to be connected to the guide rod (15). The scraper (16) is slidably connected to the guide rod (15). The first spring (14) is sleeved on the guide rod (15). The two ends of the first spring (14) are connected to the scraper (16) and the fixed block (13).

5. A turntable device for a concrete pump truck according to claim 4, characterized in that: The striking assembly comprises a rotating disk (17), an arc block (18), a roller (19), a connecting rod (20), a mounting block (21), a second spring (22), an impact block (23) and an adjusting bolt (24). The rotating disk (17) is connected to the rotating shaft (8). One end of the rotating disk (17) close to the mud conveying pipe (3) is connected to a plurality of arc blocks (18). Both sides of the mud conveying pipe (3) are connected to symmetrically arranged mounting blocks (21). One end of the second spring (22) is connected to the mounting block (21). The other end of the second spring (22) is connected to an arc-shaped impact block (23). Both ends of the impact block (23) close to the rotating disk (17) are connected to the connecting rod (20). The connecting rod (20) is connected to a roller (19) slidably connected to the arc block (18). The adjusting bolt (24) is threadedly connected to the impact block (23).

6. A turntable device for a concrete pump truck according to claim 1, characterized in that: The outer circumference of the mud delivery pipe (3) is provided with a symmetrically arranged semicircular limiting sleeve (25), the limiting sleeve (25) is spliced ​​to form a circular limiting frame to limit the shaking of the mud delivery pipe (3), both ends of the limiting sleeve (25) are connected with a protrusion, the protrusion is provided with a through hole for a fixing bolt (26) to pass through, the fixing bolt (26) passes through the through hole on the protrusion and is connected to a nut (27), and the outer circumference of the limiting sleeve (25) is connected to a fixing rod (28) connected to the turntable (1) of the concrete pump truck.

7. A turntable device for a concrete pump truck according to claim 6, characterized in that: A protective pad (29) is connected inside the limiting sleeve (25).

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