Concrete mixer discharge chute rotating shaft positioning device

Abstract

The utility model discloses a discharging chute rotating shaft positioning device of a concrete mixer truck, and relates to the technical field of concrete mixer trucks. The concrete mixer discharge chute rotating shaft positioning device comprises a fixed base, a rotor, a driving assembly and a connecting assembly, an open hole is formed in the top of the fixed base, a rotating shaft is placed in the open hole, a chute is arranged above the rotating shaft, an adjusting mechanism is arranged between the rotating shaft and the chute, and the rotor is located between the fixed base and the rotating shaft. The concrete mixer discharging chute rotating shaft positioning device can limit the front-back position, the left-right position and the up-down position of the rotating shaft, can prevent the rotating shaft from moving on the fixed base when the rotating shaft bears large thrust, guarantees the using effect of the rotating shaft, can drive the rotating shaft to rotate, can adjust the direction of a chute at the top of the rotating shaft, and is convenient to use. And the worm and the worm gear have self-locking performance, so that the chute can be prevented from rotating due to external force in the using process, and concrete is ensured to be discharged along the direction of the chute.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete mixer trucks, in particular to a discharging chute rotating shaft positioning device for a concrete mixer truck. Background Art

[0002] A shaft positioning mechanism with publication number CN204533173U comprises a positioning sleeve fixed by bolts; a rotatable shaft sleeve is sleeved inside the positioning sleeve; a rotating shaft is arranged at the center of the shaft sleeve; the rotating shaft and the shaft sleeve are detachably fixed by a tightening sleeve; the positioning sleeve is provided with a recess, and the shaft sleeve is provided with a boss. When the rotating shaft drives the shaft sleeve to rotate left and right to the maximum position, the recess on the positioning sleeve contacts and engages with the boss of the shaft sleeve to limit the shaft from continuing to rotate. The mechanism has the advantages of simple structure, flexible action and beautiful appearance; simple operation and convenient adjustment; high positioning accuracy and low manufacturing cost; improved production efficiency, and is an indispensable mechanism for realizing automated production; and strong practicality.

[0003] However, during the use of the above positioning mechanism, if the rotating shaft is subjected to a large up and down thrust, the rotating shaft will move up and down in the bearing, affecting the use effect. Utility Model Content

[0004] The purpose of the utility model is to provide a device for positioning the rotating shaft of a discharging chute of a concrete mixer truck to solve the problems and defects of the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a concrete mixer truck discharging chute shaft positioning device, comprising a fixed base, a rotor, a driving assembly and a connecting assembly, an opening is provided on the top of the fixed base, a rotating shaft is placed in the opening, a chute is provided above the rotating shaft, an adjustment mechanism is provided between the rotating shaft and the chute, the rotor is located between the fixed base and the rotating shaft, two groups of movable grooves A are provided on the inner wall of the fixed base, two groups of movable grooves B are provided on the outer wall of the rotating shaft, the rotor is movably installed in the movable grooves A and the movable grooves B, the rotating shaft can be limited in front and back, left and right, up and down, and when the rotating shaft is subjected to a large thrust, the rotating shaft can be prevented from being in the fixed position. The fixed base generates movement to ensure the use effect of the rotating shaft. The driving assembly is located on the outside of the rotating shaft. The driving assembly includes a worm, a crank and a worm wheel. The worm is rotatably installed on both sides of the fixed base, the crank is fixedly installed on both ends of the worm, and the worm wheel is fixedly installed on the outer wall of the rotating shaft. The worm wheel is meshed with the worm to drive the rotating shaft to rotate, and the direction of the chute at the top of the rotating shaft can be adjusted. The worm and the worm wheel are self-locking, so that the chute can be prevented from rotating due to external force during use, ensuring that concrete is discharged along the direction of the chute. The connecting assembly is located between the rotating shaft and the chute, and the connecting assembly is used to connect the rotating shaft and the chute.

[0006] Preferably, the connecting assembly includes a connecting block, a bolt and a nut. The connecting block is hingedly installed at the bottom of the chute. A slot is provided at the bottom of the connecting block. The top of the rotating shaft is snap-fitted and installed in the slot. A mounting hole is provided between the connecting block and the rotating shaft. The bolt is located in the mounting hole. The nut is threadedly installed on the outer wall of the bolt.

[0007] Preferably, the adjustment mechanism includes a fixed sleeve, a telescopic sleeve, a threaded rod and a knob block, the telescopic sleeve is slidably installed on one side of the fixed sleeve, the threaded rod is rotatably installed on the other side of the fixed sleeve, and one end of the telescopic sleeve is threadedly installed on the outer wall of the threaded rod, the other end of the telescopic sleeve is hingedly installed on the bottom of the chute, the knob block is fixedly installed on one end of the threaded rod, and the knob block is in contact with the fixed sleeve for adjusting the inclination angle of the chute.

[0008] Preferably, the rotating shaft is provided with a connecting hole, and the fixing sleeve is rotatably installed in the connecting hole.

[0009] Preferably, a sealing groove is formed on the inner wall of the fixed base, a sealing ring is placed in the sealing groove, and the sealing ring contacts the outer wall of the rotating shaft to isolate impurities and prevent them from entering the interior.

[0010] Preferably, a round protrusion is fixedly mounted on the inner bottom of the fixed base, and the bottom end of the rotating shaft contacts the top of the round protrusion to support the rotating shaft.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The shaft positioning device of the discharging chute of the concrete mixer truck can limit the front and rear, left and right, up and down positions of the shaft through the fixed base and the rotor. When the shaft is subjected to a large thrust, the shaft can be prevented from moving on the fixed base, thereby ensuring the use effect of the shaft. The shaft can be driven to rotate through the worm, the crank and the worm wheel, and the direction of the chute at the top of the shaft can be adjusted. Moreover, the worm and the worm wheel are self-locking, so that when the chute is in use, the chute can be prevented from rotating due to external force, thereby ensuring that concrete is discharged along the direction of the chute. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a cross-sectional view of the fixed base and the connecting block of the utility model;

[0016] Figure 3 It is a cross-sectional view of the fixed sleeve and the telescopic sleeve of the utility model.

[0017] Figure numerals: 1. fixed base; 2. rotating shaft; 3. rotor; 4. sealing ring; 5. worm; 6. crank; 7. worm wheel; 8. connecting block; 9. chute; 10. fixed sleeve; 11. telescopic sleeve; 12. threaded rod; 13. knob block; 14. bolt; 15. nut; 16. round bump. DETAILED DESCRIPTION

[0018] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0019] See also Figure 1-3 The utility model provides a technical solution: a concrete mixer truck discharging chute shaft positioning device, comprising a fixed base 1, a rotor 3, a driving assembly and a connecting assembly, an opening is opened on the top of the fixed base 1, a rotating shaft 2 is placed in the opening, a chute 9 is arranged above the rotating shaft 2, an adjusting mechanism is arranged between the rotating shaft 2 and the chute 9, the rotor 3 is located between the fixed base 1 and the rotating shaft 2, two groups of movable grooves A are opened on the inner wall of the fixed base 1, two groups of movable grooves B are opened on the outer wall of the rotating shaft 2, the rotor 3 is movably installed in the movable grooves A and the movable grooves B, and the driving assembly is located on the outer side of the rotating shaft 2 The driving assembly includes a worm 5, a crank 6 and a worm wheel 7. The worm 5 is rotatably installed on both sides of the fixed base 1, the crank 6 is fixedly installed on both ends of the worm 5, the worm wheel 7 is fixedly installed on the outer wall of the rotating shaft 2, and the worm wheel 7 is meshed with the worm 5. The crank 6 is manually twisted, and the crank 6 drives the worm 5 to rotate. The rotation of the worm 5 drives the worm wheel 7 and the rotating shaft 2 to rotate, and then the rotating shaft 2 drives the connecting assembly, the adjusting mechanism and the chute 9 to rotate, which can change the concrete discharging direction. The connecting assembly is located between the rotating shaft 2 and the chute 9, and the connecting assembly is used to connect the rotating shaft 2 and the chute 9.

[0020] The connecting assembly includes a connecting block 8, a bolt 14 and a nut 15. The connecting block 8 is hingedly installed at the bottom of the chute 9. A slot is provided at the bottom of the connecting block 8. The top of the rotating shaft 2 is snap-fitted and installed in the slot. A mounting hole is provided between the connecting block 8 and the rotating shaft 2. The bolt 14 is located in the mounting hole. The nut 15 is threadedly installed on the outer wall of the bolt 14.

[0021] The adjusting mechanism includes a fixed sleeve 10, a telescopic sleeve 11, a threaded rod 12 and a knob block 13. The telescopic sleeve 11 is slidably installed on one side of the fixed sleeve 10, and the threaded rod 12 is rotatably installed on the other side of the fixed sleeve 10. One end of the telescopic sleeve 11 is threadedly installed on the outer wall of the threaded rod 12, and the other end of the telescopic sleeve 11 is hingedly installed on the bottom of the chute 9. The knob block 13 is fixedly installed on one end of the threaded rod 12, and the knob block 13 is in contact with the fixed sleeve 10. The knob block 13 is manually twisted, and the knob block 13 drives the threaded rod 12 to rotate, and the threaded rod 12 drives the telescopic sleeve 11 to move, so that the telescopic sleeve 11 changes the unloading angle of the chute 9.

[0022] The rotating shaft 2 is provided with a connecting hole, and the fixing sleeve 10 is rotatably installed in the connecting hole.

[0023] A sealing groove is formed on the inner wall of the fixed base 1 , and a sealing ring 4 is placed in the sealing groove. The sealing ring 4 contacts the outer wall of the rotating shaft 2 .

[0024] A round protrusion 16 is fixedly mounted on the inner bottom of the fixed base 1 , and the bottom end of the rotating shaft 2 contacts the top of the round protrusion 16 .

[0025] Working principle: manually twist the crank 6, the crank 6 drives the worm 5 to rotate, the rotation of the worm 5 drives the worm wheel 7 and the rotating shaft 2 to rotate, and then the rotating shaft 2 drives the connecting assembly, the adjustment mechanism and the chute 9 to rotate, which can change the concrete discharge direction, and manually twist the knob block 13, the knob block 13 drives the threaded rod 12 to rotate, and the threaded rod 12 drives the telescopic sleeve 11 to move, so that the telescopic sleeve 11 changes the discharge angle of the chute 9.

[0026] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A concrete mixer truck discharging chute shaft positioning device, characterized in that: include: A fixed base (1) is provided with an opening on the top, a rotating shaft (2) is placed in the opening, a chute (9) is provided above the rotating shaft (2), and an adjustment mechanism is provided between the rotating shaft (2) and the chute (9); The rotor (3) is located between the fixed base (1) and the rotating shaft (2). The inner wall of the fixed base (1) is provided with two sets of movable grooves A, and the outer wall of the rotating shaft (2) is provided with two sets of movable grooves B. The rotor (3) is movably installed in the movable grooves A and the movable grooves B. A driving assembly is located outside the rotating shaft (2), and comprises a worm (5), a crank (6) and a worm wheel (7), wherein the worm (5) is rotatably mounted on both sides of the fixed base (1), the crank (6) is fixedly mounted on both ends of the worm (5), and the worm wheel (7) is fixedly mounted on the outer wall of the rotating shaft (2), and the worm wheel (7) is meshed with the worm (5); The connecting component is located between the rotating shaft (2) and the chute (9), and is used to connect the rotating shaft (2) and the chute (9).

2. The device for positioning the rotating shaft of a discharging chute of a concrete mixer truck according to claim 1, characterized in that: The connection assembly comprises a connection block (8), a bolt (14) and a nut (15); the connection block (8) is hingedly mounted on the bottom of the chute (9); a slot is provided at the bottom of the connection block (8); the top end of the rotating shaft (2) is snap-fitted and mounted in the slot; a mounting hole is provided between the connection block (8) and the rotating shaft (2); the bolt (14) is located in the mounting hole; and the nut (15) is threadedly mounted on the outer wall of the bolt (14).

3. A concrete mixer truck discharging chute shaft positioning device according to claim 2, characterized in that: The adjustment mechanism comprises a fixed sleeve (10), a telescopic sleeve (11), a threaded rod (12) and a knob block (13); the telescopic sleeve (11) is slidably mounted on one side of the fixed sleeve (10); the threaded rod (12) is rotatably mounted on the other side of the fixed sleeve (10); one end of the telescopic sleeve (11) is threadedly mounted on the outer wall of the threaded rod (12); the other end of the telescopic sleeve (11) is hingedly mounted on the bottom of the chute (9); the knob block (13) is fixedly mounted on one end of the threaded rod (12), and the knob block (13) is in contact with the fixed sleeve (10).

4. The device for positioning the rotating shaft of a discharging chute of a concrete mixer truck according to claim 3, characterized in that: The rotating shaft (2) is provided with a connecting hole, and the fixing sleeve (10) is rotatably installed in the connecting hole.

5. The device for positioning the rotating shaft of the discharging chute of a concrete mixer truck according to claim 4, characterized in that: The inner wall of the fixed base (1) is provided with a sealing groove, a sealing ring (4) is placed in the sealing groove, and the sealing ring (4) is in contact with the outer wall of the rotating shaft (2).

6. The device for positioning the rotating shaft of the discharging chute of a concrete mixer truck according to claim 5, characterized in that: A round protrusion (16) is fixedly mounted on the inner bottom of the fixed base (1), and the bottom end of the rotating shaft (2) is in contact with the top of the round protrusion (16).

Images