CN110900841A

CN110900841A - Concrete mixer

Info

Publication number: CN110900841A
Application number: CN201911331191.9A
Authority: CN
Inventors: 李晓光; 唐加义; 张士杰
Original assignee: Jinan Mingyang Construction Machinery Co Ltd
Current assignee: Jinan Mingyang Construction Machinery Co Ltd
Priority date: 2019-12-21
Filing date: 2019-12-21
Publication date: 2020-03-24
Anticipated expiration: 2039-12-21
Also published as: CN110900841B

Abstract

The invention relates to the technical field of mixers, in particular to a concrete mixer, which comprises a frame, wherein the upper end of the frame is provided with a feeding hole, and the lower end of the frame is provided with a discharging hole; the frame is provided with a sealing mechanism; the upper end of the rack is provided with a feeding device communicated with the feeding hole, a stirring device is arranged in the rack, and the lower end of the rack is provided with a discharging device communicated with the discharging hole; the discharging device comprises a discharging pipe arranged on the rack, a protection mechanism is arranged on the discharging pipe, the protection mechanism comprises an inner lining plate arranged in the discharging pipe, and a connecting mechanism connected with the inner lining plate is arranged on the inner side wall of the discharging pipe. The protection mechanism provided by the invention can protect the discharge pipe, and the production cost is reduced.

Description

Concrete mixer

Technical Field

The invention relates to the technical field of mixers, in particular to a concrete mixer.

Background

A stirrer is a construction engineering machine and is mainly used for stirring building materials such as cement, sand and stone, various dry-mixed mortar and the like. This is a machine in which a shaft with blades rotates in a cylinder or tank to mix and stir a plurality of materials into a mixture or a suitable consistency.

At present, the chinese utility model that the bulletin number is CN209440524U discloses a concrete processing equipment convenient to maintain, including agitator tank, rabbling mechanism, set up the discharging pipe in agitator tank bottom, fixed weighing hopper and the dust removal mechanism that sets up in the agitator tank top, the inside top of agitator tank is provided with spray set and blast apparatus. And the concrete flows out through the discharge pipe after being stirred.

The above prior art solutions have the following drawbacks: when the concrete that has mixed passes through the discharging pipe outflow, can strike the ejection of compact mouth of pipe of discharging pipe, can cause the damage of discharging pipe after the time has been of a specified duration, just need realize changing the discharging pipe to manufacturing cost has been improved.

Disclosure of Invention

In view of the above-mentioned disadvantages of the prior art, an object of the present invention is to provide a concrete mixer, in which a protection mechanism is provided to protect a discharge pipe, thereby reducing the production cost.

The above object of the present invention is achieved by the following technical solutions:

a concrete mixer comprises a frame, wherein the upper end of the frame is provided with a feed inlet, and the lower end of the frame is provided with a discharge outlet; the frame is provided with a sealing mechanism; the upper end of the rack is provided with a feeding device communicated with the feeding hole, a stirring device is arranged in the rack, and the lower end of the rack is provided with a discharging device communicated with the discharging hole; the discharging device comprises a discharging pipe arranged on the rack, a protection mechanism is arranged on the discharging pipe, the protection mechanism comprises an inner lining plate arranged in the discharging pipe, and a connecting mechanism connected with the inner lining plate is arranged on the inner side wall of the discharging pipe.

By adopting the technical scheme, the materials enter the rack through the feeding device, the stirring mechanism can stir the materials in the rack, and the stirred concrete flows out through the discharge pipe in the discharging device; when the concrete flows out through the discharging pipe, the inner lining plate arranged on the discharging pipe can protect the discharging pipe, the service life of the discharging pipe is prolonged, and therefore production cost is reduced.

The invention is further configured to: the discharge pipe is provided with a first sliding chute; the connecting mechanism comprises a first sliding block connected with the lining plate, and the first sliding block is connected in the first sliding groove in a sliding manner; a first adjusting component connected with the first sliding block is arranged on the discharge pipe; the first adjusting assembly comprises a first connecting shaft arranged on the discharge pipe, a telescopic rod is arranged on the first connecting shaft, and one end, far away from the first connecting shaft, of the telescopic rod is connected with the first sliding block; a first driving assembly connected with the first connecting shaft is arranged on the discharge pipe; the first driving assembly comprises a first motor arranged on the discharge pipe, and an output shaft of the first motor is in keyed connection with a first gear; and a second gear meshed with the first gear is in keyed connection with the first connecting shaft.

Through adopting above-mentioned technical scheme, start first motor, the output shaft of first motor takes first gear to rotate, second gear with first gear engagement will rotate, second gear rotates and will drive first connecting axle and rotate, first connecting axle rotates and will drive and realize the telescopic link and rotate, the telescopic link will drive first slider and slide in first spout, first slider removes and can drive interior welt and remove in the discharging pipe, interior welt motion can prevent that the discharging pipe from blockking up.

The invention is further configured to: the discharging pipe is provided with a first adjusting mechanism, the first adjusting mechanism comprises a first adjusting block arranged on the discharging pipe, the first adjusting block is rotatably connected with a first connecting rod, the first connecting rod is provided with a second connecting rod, and the second connecting rod is provided with a third connecting rod; the first adjusting block is provided with a second driving assembly connected with the first connecting rod; a cavity is formed in the first adjusting block, and a part of the first connecting rod is located in the cavity; the second driving assembly comprises a worm which is rotatably connected in the cavity; a second motor connected with the worm is arranged on the discharge pipe; and a worm wheel meshed with the worm is connected to the first connecting rod in the cavity in a keyed mode.

Through adopting above-mentioned technical scheme, start the second motor, the output shaft of second motor drives the worm and rotates, will rotate with worm meshed worm wheel, and the worm wheel drives first connecting rod and rotates, and first connecting rod drives the second connecting rod and rotates, and the second connecting rod drives the motion of third connecting rod, and the motion of second connecting rod and third connecting rod can prevent that the discharging pipe from blockking up.

The invention is further configured to: the stirring device comprises a stirring shaft which is movably connected to the rack, and a stirring rod is arranged on the stirring shaft; a second bevel gear is connected to the stirring shaft in a key manner; a rotating shaft is rotatably connected to the rack, and a first bevel gear meshed with the second bevel gear is connected to the rotating shaft in a keyed mode; a third driving assembly connected with the rotating shaft is arranged on the rack; the third driving assembly comprises a third motor arranged on the rack, and an output shaft of the third motor is connected with a first belt wheel; the rotating shaft is provided with a second belt wheel, and a belt is sleeved on the first belt wheel and the second belt wheel.

By adopting the technical scheme, the third motor is started, the output shaft of the third motor drives the first belt wheel to rotate, the first belt wheel drives the belt to rotate, the belt can drive the second belt wheel to rotate, the second belt wheel drives the rotating shaft to rotate, the first bevel gear on the rotating shaft rotates, the second bevel gear meshed with the first bevel gear rotates, the second bevel gear drives the stirring shaft to rotate, and the stirring shaft drives the stirring rod to rotate for stirring; the third drive assembly reduces the influence on the stirring effect.

The invention is further configured to: the tensioning mechanism is arranged on the rack and comprises an adjusting rod arranged on the rack, and a tensioning shaft for tightly abutting against a belt is arranged on the adjusting rod; a second adjusting assembly connected with the adjusting rod is arranged on the rack; the second adjusting assembly comprises a fourth motor arranged on the rack, and an output shaft of the fourth motor is in keyed connection with a third gear; the rack is provided with a second connecting shaft, the adjusting rod is arranged on the second connecting shaft, and a fourth gear meshed with the third gear is connected to the second connecting shaft in a key mode.

Through adopting above-mentioned technical scheme, start the fourth motor, the output shaft of fourth motor drives the third gear rotation, will rotate with third gear engagement's fourth gear, and the second connecting axle will be along with the fourth gear rotation, makes the position of adjusting the pole can change to realize changing the position of tensioning axle, the straining device of setting can realize carrying out the tensioning to the belt, thereby reduces the influence to stirring effect.

The invention is further configured to: the rack is provided with a second adjusting mechanism, the rack is provided with a second sliding groove, the second adjusting mechanism comprises a second adjusting block connected with the second sliding groove in a sliding manner, and a second connecting shaft is connected to the second adjusting block in a rotating manner; a first screw rod is rotatably connected in the second sliding groove, penetrates through the second adjusting block and is in threaded connection with the second adjusting block; a fifth motor connected with the first screw is arranged on the rack; the second adjusting block is provided with a slot; a third sliding groove is formed in the rack, a connecting block is connected in the third sliding groove in a sliding manner, and an inserting rod clamped with the inserting groove is arranged on the connecting block; a fourth sliding groove is formed in the rack, two ends of the fourth sliding groove are connected with a second sliding block in a sliding mode, and a connecting rod connected with the connecting block is arranged on the second sliding block; a bidirectional screw rod is rotatably connected in the fourth sliding groove, penetrates through the two second sliding blocks, and is respectively in threaded connection with two ends of the bidirectional screw rod; and a sixth motor connected with the bidirectional screw is arranged on the rack.

Through adopting above-mentioned technical scheme, when second adjusting part can not normal use, start the fifth motor, the output shaft of fifth motor drives first screw rod and rotates, first screw rod will drive the second regulating block and remove in the second spout, close the fifth motor, start the sixth motor, the output shaft of sixth motor drives two-way screw rod and rotates, two-way screw rod rotates and will drive two second sliders and do opposite directions or move dorsad, connecting rod on two second slider movements will drive the connecting block motion, make inserted bar and slot joint on the connecting block, realize the location of second regulating block.

The invention is further configured to: the feeding device comprises a feeding frame arranged on the rack, a feeding hole is formed in the feeding frame, an anti-blocking mechanism is arranged on the feeding frame and comprises a third connecting shaft rotatably connected to the feeding frame, an anti-blocking rod is arranged on the third connecting shaft, and a fourth driving assembly connected with the third connecting shaft is arranged on the feeding frame; the fourth driving assembly comprises a seventh motor arranged on the feeding frame, an output shaft of the seventh motor is in keyed connection with a fifth gear, and a third connecting shaft is in keyed connection with a sixth gear meshed with the fifth gear.

By adopting the technical scheme, the seventh motor is started, the output shaft of the seventh motor drives the fifth gear to rotate, the sixth gear meshed with the fifth gear rotates, the sixth gear drives the third connecting shaft to move, and the third connecting shaft rotates to drive the anti-blocking rod to shake, so that the material is prevented from blocking the feeding frame; the anti-blocking mechanism that sets up can prevent that the play work or material rest from blockking up to raise the efficiency.

The invention is further configured to: a blocking mechanism is arranged in the feeding frame and comprises an adjusting shaft which is rotatably connected to the feeding frame, and a baffle is arranged on the adjusting shaft; an eighth motor is arranged on the feeding frame, a seventh gear is connected to an output shaft of the eighth motor in a key mode, and an eighth gear meshed with the seventh gear is connected to the adjusting shaft in a key mode.

Through adopting above-mentioned technical scheme, start the eighth motor, the output shaft of eighth motor drives seventh gear revolve, and the eighth gear with seventh gear engagement will rotate, and eighth gear revolve and will drive the regulating spindle and rotate, and the position that the regulating spindle will drive the baffle changes to can control the speed and the quantity that the material entered into the frame.

The invention is further configured to: the sealing mechanism comprises a fourth connecting shaft which is rotatably connected to the rack, and a sealing plate is arranged on the fourth connecting shaft; the rack is provided with an air cylinder, and a piston rod of the air cylinder is provided with a gear rack; and a ninth gear meshed with the gear strip is connected to the fourth connecting shaft in a key mode.

Through adopting above-mentioned technical scheme, start the cylinder, the piston rod of cylinder takes the gear strip to remove, will rotate with the ninth gear of gear strip meshing, and the ninth gear drives the rotation of fourth connecting axle, and the epaxial closing plate of fourth connecting will move, makes the material of stirring in the frame enter into the discharging pipe through the discharge gate.

In conclusion, the beneficial technical effects of the invention are as follows:

1. the inner lining plate arranged on the protection mechanism can protect the discharge pipe, so that the service life of the discharge pipe is prolonged, and the production cost is reduced;

2. the belt can be tensioned by the tensioning mechanism, so that the influence on the stirring effect is reduced;

3. the anti-blocking mechanism that sets up can prevent that the play work or material rest from blockking up to raise the efficiency.

Drawings

FIG. 1 is a schematic view showing the construction of a concrete mixer according to the present invention;

FIG. 2 is a schematic structural view of the internal structure of the feeding frame according to the present invention;

FIG. 3 is a schematic view of the stirring apparatus of the present invention;

FIG. 4 is a schematic view of the tensioning mechanism of the present invention;

FIG. 5 is a schematic structural view of a sealing mechanism according to the present invention;

FIG. 6 is a schematic view of the structure of the discharging device of the present invention;

FIG. 7 is a schematic structural view of a first adjustment mechanism of the present invention;

fig. 8 is a partial enlarged view of a in fig. 6.

Reference numerals: 1. a frame; 2. a discharging device; 21. a discharge pipe; 211. a first chute; 22. a first slider; 23. an inner liner plate; 24. a telescopic rod; 25. a first drive assembly; 251. a first gear; 252. a second gear; 253. a first motor; 3. a first adjustment mechanism; 31. a first link; 32. a second link; 33. a third link; 34. a first regulating block; 35. a second drive assembly; 351. a worm; 352. a second motor; 353. a worm gear; 41. a stirring shaft; 42. a stirring rod; 43. a rotating shaft; 44. a first bevel gear; 45. a second bevel gear; 46. a third drive assembly; 461. a first pulley; 462. a second pulley; 463. a third motor; 464. a belt; 5. a tensioning mechanism; 51. adjusting a rod; 52. tensioning the shaft; 53. a second adjustment assembly; 531. a fourth motor; 532. a second connecting shaft; 533. a third gear; 534. a fourth gear; 61. a first screw; 62. a second regulating block; 621. a slot; 63. a fifth motor; 64. connecting blocks; 65. a second slider; 66. a sixth motor; 67. a bidirectional screw; 68. inserting a rod; 69. a connecting rod; 7. a feeding device; 71. a feeding frame; 72. an anti-blocking rod; 73. a third connecting shaft; 74. a fourth drive assembly; 741. a fifth gear; 742. a sixth gear; 743. a seventh motor; 8. a blocking mechanism; 81. an adjustment shaft; 82. a baffle plate; 83. an eighth motor; 84. a seventh gear; 85. an eighth gear; 9. a sealing mechanism; 91. a cylinder; 92. a gear rack; 93. a sealing plate; 94. a fourth connecting shaft; 95. a ninth gear.

Detailed Description

The invention is described in detail below with reference to the figures and examples.

Referring to fig. 1, a concrete mixer disclosed by the invention comprises a frame 1, wherein a feed inlet is formed in the upper end of the frame 1, and a discharge outlet is formed in the lower end of the frame 1; the upper end of the frame 1 is provided with a feeding device 7, the frame 1 is provided with a stirring mechanism, and the frame 1 is provided with a sealing mechanism 9 for sealing the discharge hole; the frame 1 is provided with a discharging device 2.

Referring to fig. 1 and 2, the feeding device 7 includes a feeding frame 71 disposed on the frame 1, a blocking mechanism 8 is sequentially disposed on the feeding frame 71 from top to bottom, the blocking mechanism 8 includes an adjusting shaft 81 rotatably connected to the feeding frame 71, and a baffle 82 is fixedly connected to the adjusting shaft 81; an eighth motor 83 is fixedly connected to the outer side wall of the feeding frame 71, and a seventh gear 84 is connected to an output shaft of the eighth motor 83 in a key manner; one end of the adjusting shaft 81 penetrates through the side wall of the feeding frame 71, and an eighth gear 85 meshed with the seventh gear 84 is keyed on one end penetrating through the side wall of the feeding frame 71.

An anti-blocking mechanism is arranged on the feeding frame 71 and comprises a third connecting shaft 73 which is rotatably connected to the feeding frame 71, the third connecting shaft 73 is located below the baffle 82, and an anti-blocking rod 72 is fixedly connected to the third connecting shaft 73 in an inclined mode. The feeding frame 71 is provided with a fourth driving assembly 74 connected with the third connecting shaft 73, the fourth driving assembly 74 comprises a seventh motor 743 arranged on the feeding frame 71, a fifth gear 741 is keyed on an output shaft of the seventh motor 743, and a sixth gear 742 meshed with the fifth gear 741 is keyed on the third connecting shaft 73.

Referring to fig. 1 and 3, the stirring device comprises two stirring shafts 41 rotatably connected in the frame 1, both stirring shafts 41 being provided with stirring rods 42.

A rotating shaft 43 is rotatably connected to the frame 1, and a first bevel gear 44 is keyed at both ends of the rotating shaft 43; two second bevel gears 45 are connected to the two stirring rods 42 in a key mode, and the two second bevel gears 45 are meshed with the two corresponding first bevel gears 44 respectively; a third driving assembly 46 is arranged on the frame 1, the third driving assembly 46 comprises a third motor 463 fixedly connected to the frame 1, and an output shaft of the third motor 463 is connected with a first pulley 461; the rotating shaft 43 is fixedly connected with a second belt wheel 462, and a belt 464 is sleeved on the first belt wheel 461 and the second belt wheel 462.

Referring to fig. 3 and 4, a tensioning mechanism 5 abutting against the belt 464 is arranged on the frame 1, a second sliding groove is formed in the frame 1, the tensioning mechanism 5 includes a second adjusting mechanism, the second adjusting mechanism includes a second adjusting block 62 connected in the second sliding groove in a sliding manner, and a slot 621 is formed in a side wall of the second adjusting block 62; a first screw 61 is rotationally connected in the second sliding groove, and the first screw 61 penetrates through the second adjusting block 62 and is in threaded connection with the second adjusting block 62; a fifth motor 63 connected with the first screw 61 is fixedly connected to the frame 1. The second adjusting block 62 is provided with a first supporting block, the first supporting block is provided with an adjusting rod 51, and one end of the adjusting rod 51 far away from the first supporting block is rotatably connected with a tensioning shaft 52 of an abutting belt 464.

A second adjusting component 53 is arranged on the first supporting block, the second adjusting component 53 comprises a fourth motor 531 fixedly connected to the first supporting block, and an output shaft of the fourth motor 531 is in keyed connection with a third gear 533; the first supporting block is rotatably connected with a second connecting shaft 532, and the second connecting shaft 532 is in keyed connection with a fourth gear 534 engaged with the third gear 533; the adjusting lever 51 is fixedly connected to an end of the second connecting shaft 532 remote from the first supporting block.

A third sliding chute and a fourth sliding chute are formed in the rack 1, the axis of the third sliding chute is perpendicular to the axis of the second sliding chute, and the axis of the fourth sliding chute is perpendicular to the axis of the third sliding chute and parallel to the axis of the second sliding chute; a connecting block 64 is slidably connected in the third sliding groove, and an inserting rod 68 clamped with a slot 621 on the second adjusting block 62 is fixedly connected on the connecting block 64. Two ends of the fourth sliding chute are connected with second sliding blocks 65 in a sliding manner, and connecting rods 69 hinged with the connecting blocks 64 are hinged on the two second sliding blocks 65; a bidirectional screw 67 is rotationally connected in the fourth chute, the thread directions of the two ends of the double screw are opposite, the bidirectional screw 67 penetrates through the two second sliding blocks 65, and the two second sliding blocks 65 are respectively in threaded connection with the two ends of the bidirectional screw 67; the frame 1 is provided with a sixth motor 66 connected with a bidirectional screw 67.

Referring to fig. 1 and 5, the sealing mechanism 9 includes a fourth connecting shaft 94 rotatably connected to the frame 1, and a sealing plate 93 for sealing the discharge port is fixedly connected to the fourth connecting shaft 94; a cylinder 91 is fixedly connected to the frame 1, and a gear rack 92 is connected to a piston rod of the cylinder 91; a ninth gear 95 meshed with the gear rack 92 is keyed on the fourth connecting shaft 94.

Referring to fig. 1 and 6, the tapping device 2 comprises a tapping pipe 21 which is fixedly connected to the machine frame 1.

Referring to fig. 6 and 7, a first adjusting mechanism 3 is disposed on the tapping pipe 21, the first adjusting mechanism 3 includes a first adjusting block 34 fixedly connected to an inner sidewall of the tapping pipe 21, and a cavity is formed on the first adjusting block 34; the first adjusting block 34 is rotatably connected with a first connecting rod 31, the middle position of the first connecting rod 31 is positioned in the cavity, and two ends of the first connecting rod 31 are positioned at two sides of the first adjusting block 34; both ends of the first connecting rod 31 are fixedly connected with a second connecting rod 32, the axis of the second connecting rod 32 is vertical to the axis of the first connecting rod 31, one end of the second connecting rod 32, which is far away from the first connecting rod 31, is fixedly connected with a third connecting rod 33, and the axis of the third connecting rod 33 is vertical to the axis of the second connecting rod 32 and is parallel to the axis of the first connecting rod 31; a connecting plate is fixedly connected to the third link 33, and the cross-sectional area of the connecting plate gradually decreases in a direction away from the third link 33.

A second driving assembly 35 is arranged on the discharge pipe 21, and the second driving assembly 35 comprises a worm 351 rotatably connected to the side wall of the cavity; the outer side wall of the discharge pipe 21 is fixedly connected with a second motor 352 connected with a worm 351; a worm gear 353, which engages the worm 351, is keyed to the first link 31 within the cavity.

Referring to fig. 6 and 8, the discharge pipe 21 is provided with a first chute 211; a protection mechanism is arranged in the discharge pipe 21, the protection mechanism comprises an inner lining plate 23 arranged on the inner side of the discharge pipe 21, the inner lining plate 23 is positioned below the first adjusting block 34, a connecting mechanism connected with the inner lining plate 23 is arranged on the discharge pipe 21, the connecting mechanism comprises a first sliding block 22 connected in a first sliding groove 211 in a sliding manner, and the first sliding block 22 is fixedly connected with the inner lining plate 23; be provided with first adjusting part on discharging pipe 21, first adjusting part is provided with telescopic link 24 including rotating the first connecting axle of connection on discharging pipe 21 lateral wall on the first connecting axle, and the one end that first connecting axle was kept away from to telescopic link 24 is articulated with first slider 22. A first driving assembly 25 is arranged on the outer side wall of the discharging pipe 21, the first driving assembly 25 comprises a first motor 253 fixedly connected to the outer side wall of the discharging pipe 21, and a first gear 251 is in keyed connection with an output shaft of the first motor 253; a second gear 252, which meshes with the first gear 251, is keyed on the first connection shaft.

The motors in this embodiment are all three-phase asynchronous motors.

The implementation principle of the embodiment is as follows: when the eighth motor 83 is started, the output shaft of the eighth motor 83 drives the seventh gear 84 to rotate, the eighth gear 85 meshed with the seventh gear 84 rotates, the eighth gear 85 rotates to drive the adjusting shaft 81 to rotate, the adjusting shaft 81 rotates to drive the position of the baffle 82 in the feeding frame 71, and the material enters the rack 1 through the feeding frame 71.

When the seventh motor 743 is started, the output shaft of the seventh motor 743 drives the fifth gear 741 to rotate, the sixth gear 742 meshed with the fifth gear 741 rotates, the sixth gear 742 drives the third connecting shaft 73 to move, and the third connecting shaft 73 rotates to drive the anti-blocking rod 72 to swing, so that the material is prevented from blocking the feeding frame 71.

When the fourth motor 531 is started, the output shaft of the fourth motor 531 drives the third gear 533 to rotate, the fourth gear 534 engaged with the third gear 533 rotates, the second connecting shaft 532 rotates along with the fourth gear 534, so that the position of the adjusting rod 51 can be changed, and the position of the tensioning shaft 52 can be changed.

When the second adjusting assembly 53 cannot be used normally, the fifth motor 63 is started, the output shaft of the fifth motor 63 drives the first screw 61 to rotate, the first screw 61 drives the second adjusting block 62 to move in the second chute, the second adjusting block 62 drives the first supporting block to move when moving, and the adjusting rod 51 on the first supporting block moves to drive the position of the tensioning shaft 52 to change.

The third motor 463 is started, the output shaft of the third motor 463 drives the first belt wheel 461 to rotate, the first belt wheel 461 drives the belt 464 to rotate, the belt 464 drives the second belt wheel 462 to rotate, the second belt wheel 462 drives the rotating shaft 43 to rotate, the first bevel gear 44 on the stirring shaft 41 rotates, the second bevel gear 45 meshed with the first bevel gear 44 rotates, the second bevel gear 45 drives the stirring shaft 41 to rotate, and the stirring rod 42 on the stirring shaft 41 drives the stirring blades to rotate to realize stirring.

The cylinder 91 is started, the piston rod of the cylinder 91 is provided with the gear strip 92 to move, the ninth gear 95 meshed with the gear strip 92 rotates, the ninth gear 95 drives the fourth connecting shaft 94 to rotate, the sealing plate 93 on the fourth connecting shaft 94 moves, and materials stirred in the rack 1 enter the discharge pipe 21 through the discharge hole.

When the second motor 352 is started, the output shaft of the second motor 352 drives the worm 351 to rotate, the worm wheel 353 meshed with the worm 351 rotates, the worm wheel 353 drives the first connecting rod 31 to rotate, the first connecting rod 31 drives the second connecting rod 32 to rotate, the second connecting rod 32 drives the third connecting rod 33 to rotate, and the third connecting rod 33 drives the connecting plate to move.

When the first motor 253 is started, an output shaft of the first motor 253 drives the first gear 251 to rotate, the second gear 252 meshed with the first gear 251 rotates, the second gear 252 rotates to drive the first connecting shaft to rotate, the first connecting shaft drives the telescopic rod 24 to rotate, and the telescopic rod 24 drives the first sliding block 22 to move; the first slider 22 moves to drive the inner lining plate 23.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. A concrete mixer comprises a frame (1), wherein the upper end of the frame (1) is provided with a feeding hole, and the lower end of the frame (1) is provided with a discharging hole; a sealing mechanism (9) is arranged on the frame (1); a feeding device (7) communicated with the feeding hole is arranged at the upper end of the rack (1), a stirring device is arranged in the rack (1), and a discharging device (2) communicated with the discharging hole is arranged at the lower end of the rack (1); the discharge device (2) is characterized by comprising a discharge pipe (21) arranged on the rack (1), a protection mechanism is arranged on the discharge pipe (21), the protection mechanism comprises an inner lining plate (23) arranged in the discharge pipe (21), and a connecting mechanism connected with the inner lining plate (23) is arranged on the inner side wall of the discharge pipe (21).

2. A concrete mixer according to claim 1, wherein said tapping pipe (21) is provided with a first chute (211); the connecting mechanism comprises a first sliding block (22) connected with the lining plate (23), and the first sliding block (22) is connected in the first sliding groove (211) in a sliding manner; a first adjusting component connected with the first sliding block (22) is arranged on the discharge pipe (21);

the first adjusting assembly comprises a first connecting shaft arranged on the discharge pipe (21), a telescopic rod (24) is arranged on the first connecting shaft, and one end, far away from the first connecting shaft, of the telescopic rod (24) is connected with the first sliding block (22); a first driving assembly (25) connected with the first connecting shaft is arranged on the discharge pipe (21);

the first driving assembly (25) comprises a first motor (253) arranged on the discharge pipe (21), and an output shaft of the first motor (253) is in keyed connection with a first gear (251); a second gear (252) which is meshed with the first gear (251) is keyed on the first connecting shaft.

3. A concrete mixer according to claim 1, wherein the tapping pipe (21) is provided with a first adjusting mechanism (3), the first adjusting mechanism (3) comprising a first adjusting block (34) provided on the tapping pipe (21), a first connecting rod (31) being rotatably connected to the first adjusting block (34), a second connecting rod (32) being provided on the first connecting rod (31), and a third connecting rod (33) being provided on the second connecting rod (32); a second driving component (35) connected with the first connecting rod (31) is arranged on the first adjusting block (34);

a cavity is formed in the first adjusting block (34), and a part of the first connecting rod (31) is positioned in the cavity; the second drive assembly (35) includes a worm (351) rotatably connected within the cavity; a second motor (352) connected with the worm (351) is arranged on the discharge pipe (21); a worm wheel (353) is keyed to the first link (31) within the cavity, which engages the worm (351).

4. A concrete mixer according to claim 1, wherein said mixing means comprises a mixing shaft (41) movably connected to said frame (1), said mixing shaft (41) being provided with a mixing rod (42); a second bevel gear (45) is connected to the upper key of the stirring shaft (41); a rotating shaft (43) is rotatably connected to the rack (1), and a first bevel gear (44) meshed with the second bevel gear (45) is connected to the rotating shaft (43) in a keyed mode; a third driving assembly (46) connected with the rotating shaft (43) is arranged on the frame (1);

the third driving assembly (46) comprises a third motor (463) arranged on the frame (1), and an output shaft of the third motor (463) is connected with a first belt wheel (461); the rotating shaft (43) is provided with a second belt wheel (462), and a belt (464) is sleeved on the first belt wheel (461) and the second belt wheel (462).

5. A concrete mixer according to claim 4, wherein a tensioning mechanism (5) is provided on the frame (1), the tensioning mechanism (5) comprising an adjusting lever (51) provided on the frame (1), the adjusting lever (51) being provided with a tensioning shaft (52) for abutting against a belt (464); a second adjusting component (53) connected with the adjusting rod (51) is arranged on the rack (1); the second adjusting component (53) comprises a fourth motor (531) arranged on the rack (1), and an output shaft of the fourth motor (531) is in keyed connection with a third gear (533); the rack (1) is provided with a second connecting shaft (532), the adjusting rod (51) is arranged on the second connecting shaft (532), and a fourth gear (534) meshed with the third gear (533) is in keyed connection with the second connecting shaft (532).

6. A concrete mixer according to claim 5, wherein a second adjusting mechanism is arranged on the frame (1), a second sliding groove is formed in the frame (1), the second adjusting mechanism comprises a second adjusting block (62) connected with the second sliding groove in a sliding manner, and the second connecting shaft (532) is rotatably connected with the second adjusting block (62); a first screw rod (61) is rotationally connected in the second sliding groove, and the first screw rod (61) penetrates through the second adjusting block (62) and is in threaded connection with the second adjusting block (62); a fifth motor (63) connected with the first screw rod (61) is arranged on the frame (1); a slot (621) is formed in the second adjusting block (62);

a third sliding groove is formed in the rack (1), a connecting block (64) is connected in the third sliding groove in a sliding manner, and an inserting rod (68) clamped with the inserting groove (621) is arranged on the connecting block (64); a fourth sliding groove is formed in the rack (1), a second sliding block (65) is connected to each of two ends of the fourth sliding groove in a sliding mode, and a connecting rod (69) connected with the connecting block (64) is arranged on each second sliding block (65); a bidirectional screw (67) is rotationally connected in the fourth sliding groove, the bidirectional screw (67) penetrates through the two second sliding blocks (65), and the two second sliding blocks (65) are respectively in threaded connection with two ends of the bidirectional screw (67); and a sixth motor (66) connected with the bidirectional screw (67) is arranged on the frame (1).

7. The concrete mixer according to claim 1, wherein the feeding device (7) comprises a feeding frame (71) arranged on the frame (1), a feeding port is formed in the feeding frame (71), an anti-blocking mechanism is arranged on the feeding frame (71), the anti-blocking mechanism comprises a third connecting shaft (73) rotatably connected to the feeding frame (71), an anti-blocking rod (72) is arranged on the third connecting shaft (73), and a fourth driving assembly (74) connected with the third connecting shaft (73) is arranged on the feeding frame (71);

the fourth driving assembly (74) comprises a seventh motor (743) arranged on the feeding frame (71), a fifth gear (741) is connected to an output shaft of the seventh motor (743) in a keyed mode, and a sixth gear (742) meshed with the fifth gear (741) is connected to the third connecting shaft (73) in a keyed mode.

8. A concrete mixer according to claim 7, wherein a blocking mechanism (8) is provided in said feed frame (71), said blocking mechanism (8) comprising an adjustment shaft (81) rotatably connected to said feed frame (71), said adjustment shaft (81) being provided with a baffle (82); an eighth motor (83) is arranged on the feeding frame (71), a seventh gear (84) is connected to an output shaft of the eighth motor (83) in a key mode, and an eighth gear (85) meshed with the seventh gear (84) is connected to an adjusting shaft (81) in a key mode.

9. A concrete mixer according to claim 1, wherein said sealing means (9) comprises a fourth connecting shaft (94) rotatably connected to said frame (1), said fourth connecting shaft (94) being provided with a sealing plate (93); an air cylinder (91) is arranged on the rack (1), and a gear rack (92) is arranged on a piston rod of the air cylinder (91); and a ninth gear (95) meshed with the gear rack (92) is connected to the fourth connecting shaft (94) in a keyed mode.