Stirring machine for concrete preparation

Abstract

The utility model discloses a mixer for preparing concrete, which relates to the technical field of mixers and comprises an equipment frame, a mixing barrel, an adjusting frame and a driving motor, the equipment frame is provided with a movably connected fixing bolt and a rotatably connected transmission shaft, and the transmission shaft penetrates through the adjusting frame and is rotatably connected with the adjusting frame. A first rotating shaft is arranged at the bottom of the stirring barrel, a second shaft hole matched with the first rotating shaft is formed in the adjusting frame, a gear is arranged on the transmission shaft, and a gear ring meshed with the gear is arranged on the side face of the stirring barrel. A movably connected knocking rod is arranged at the bottom of the adjusting frame, and an annular boss matched with the knocking rod is arranged at the bottom of the stirring barrel. The concrete mixer has the advantages of being good in discharging effect and convenient to adjust by a single person, and the problems that a traditional concrete mixer is incomplete in discharging and complex in operation are solved.

Description

Technical Field

[0001] This utility model relates to the field of mixer technology, specifically a mixer for concrete preparation. Background Technology

[0002] Concrete, as a widely used building material, plays a crucial role in construction projects. A concrete mixer is an essential piece of equipment used to mix materials such as cement, sand, and water to prepare concrete. A traditional concrete mixer typically consists of a mixing drum and a drive unit that rotates the drum to achieve uniform mixing of the materials.

[0003] However, traditional mixers have some shortcomings. During the discharge process, due to the high viscosity of concrete, it is easy for residues to remain on the inner wall of the mixing drum, resulting in incomplete discharge. This not only reduces work efficiency but may also affect the quality of the next batch of concrete. The opening angle of the mixing drum of many existing mixers is limited by a pin, which requires one person to release the limit and another person to perform the adjustment operation. The collaboration of multiple people increases the difficulty of operation and increases labor costs. Therefore, a concrete preparation mixer is needed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a concrete mixer that has the advantages of good discharge effect and convenient single-person adjustment, and solves the problems of incomplete discharge and complicated operation of traditional concrete mixers.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a concrete mixer, comprising an equipment frame, a mixing drum, an adjusting frame, and a drive motor. The equipment frame is provided with a movably connected fixing pin, and a rotatably connected transmission shaft is provided on the equipment frame. The transmission shaft passes through the adjusting frame and is rotatably connected to it. A shaft tube rotatably connected to the equipment frame is provided on the side of the adjusting frame away from the transmission shaft, and a steering wheel is fixedly installed on the shaft tube. A first rotating shaft is provided at the bottom of the mixing drum, and a second shaft hole mates with the first rotating shaft is provided on the adjusting frame. A gear is provided on the transmission shaft, and a gear ring meshing with the gear is provided on the side of the mixing drum. A striking rod is movably connected to the bottom of the adjusting frame, and an annular boss mates with the striking rod is provided at the bottom of the mixing drum.

[0006] As a preferred embodiment of the concrete preparation mixer of this utility model, a first synchronous pulley is provided on the output shaft of the drive motor, a second synchronous pulley is provided on the transmission shaft to cooperate with the first synchronous pulley, a synchronous belt for transmission is provided on the first and second synchronous pulleys, and a mixing blade is provided inside the mixing drum.

[0007] As a preferred embodiment of the concrete preparation mixer of this utility model, the bottom of the adjusting frame is provided with an ear plate, the side of the striking rod is provided with a second rotating shaft that rotates with the ear plate, and the annular boss has a sawtooth structure.

[0008] As a preferred embodiment of the concrete preparation mixer of this utility model, the end of the striking rod is provided with a counterweight head and a striking head, the striking head is slidably connected to the annular boss, and the striking head has a ball head structure.

[0009] As a preferred embodiment of the concrete preparation mixer of this utility model, the end of the striking rod away from the counterweight head is provided with a limiting protrusion for limiting the rotation angle of the striking rod.

[0010] As a preferred embodiment of the concrete preparation mixer of this utility model, the side of the equipment frame is provided with a first sliding groove, and the top of the first sliding groove is provided with a second sliding groove that communicates with the first shaft hole. The fixing pin includes a pedal and a pin shaft. The pin shaft is fixedly installed on the upper end face of the pedal. The pedal is installed in the first sliding groove and slidably connected to the equipment frame. The pin shaft is inserted into the second sliding groove and slidably connected to the equipment frame. A spring is provided on the lower end face of the pedal. The side of the shaft tube is provided with a pin hole that mates with the pin shaft.

[0011] In a preferred embodiment of the concrete preparation mixer of this utility model, the number of pin holes is eight, the pin holes are equidistantly arranged in a circular array on the shaft tube, and the top of the pin shaft is a dome structure.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model features a structure in which an ear plate at the bottom of the adjusting frame rotates in conjunction with a second rotating shaft on the side of the striking rod, and a serrated annular boss at the bottom of the mixing tank engages with the striking rod. During material discharge, the striking rod rests on the annular boss under gravity, intermittently striking the tank wall as the mixing tank rotates, knocking off adhering cement and improving discharge efficiency. This solves the technical problem of material residue remaining on the tank wall during discharge. Furthermore, the striking rod's end features a counterweight and ball-head structure, increasing the striking weight and enhancing the striking effect, allowing the striking rod to slide more smoothly along the annular boss. A limiting protrusion at the end of the striking rod away from the counterweight restricts the rod's rotation angle, ensuring the striking rod separates from the annular boss when the mixing tank is upright. During discharge, the striking rod automatically rests on the boss, achieving the beneficial striking effect. This avoids the striking rod interfering with mixing when not discharging, and prevents it from automatically positioning itself for striking during discharge.

[0014] 2. This utility model features a first sliding groove on the side of the equipment frame and a second sliding groove on the top that communicates with the first shaft hole. The fixing pin consists of a pedal and a pin. The pedal is slidably connected to the first sliding groove, and the pin is inserted into the second sliding groove. A spring is provided on the lower end face of the pedal, and the side of the shaft tube has a pin hole that mates with the pin. The step-type release limit structure can conveniently fix or change the opening angle of the mixing tank, realizing the conversion between mixing and discharging. This solves the technical problem that the opening angle of the mixing tank is inconvenient to adjust and cannot flexibly adapt to different working states. Attached Figure Description

[0015] Figure 1 This is a first-view overall structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the overall structure of the present invention from a second perspective;

[0017] Figure 3 This is a top view of the present invention;

[0018] Figure 4 For the present utility model Figure 3 Cross-sectional view of the middle section (BB);

[0019] Figure 5 For the present utility model Figure 3 Sectional view of AA in the middle;

[0020] Figure 6 For the present utility model Figure 5 Enlarged view of point C.

[0021] In the diagram: 1. Equipment frame; 101. Drive shaft; 1011. Gear; 1012. Second synchronous pulley; 102. Moving wheel set; 103. Spring; 104. Synchronous belt; 105. First slide groove; 106. Second slide groove; 107. First shaft hole; 2. Mixing tank; 201. First rotating shaft; 202. Gear ring; 203. Annular boss; 204. Mixing blade; 3. Adjusting frame; 301. Shaft tube; 3011. Pin hole; 302. Ear plate; 303. Second shaft hole; 4. Steering wheel; 5. Fixing pin; 501. Pedal; 502. Pin shaft; 6. Drive motor; 601. First synchronous pulley; 7. Striking rod; 701. Counterweight head; 702. Striking head; 703. Second rotating shaft; 704. Limiting protrusion. Detailed Implementation

[0022] Please see Figures 1-6A concrete mixer includes a frame 1, a mixing drum 2, an adjusting frame 3, and a drive motor 6. The bottom of the frame 1 is provided with a set of movable wheels 102. A fixed pin 5 is movably connected to the frame 1. A drive shaft 101 is rotatably connected to the frame 1, passing through the adjusting frame 3 and rotatably connected thereto. A shaft tube 301, rotatably connected to the frame 1, is provided on the side of the adjusting frame 3 away from the drive shaft 101. A steering wheel 4 is fixedly installed on the shaft tube 301. A first rotating shaft 201 is provided at the bottom of the mixing drum 2. A second shaft hole 303, cooperating with the first rotating shaft 201, is provided on the adjusting frame 3. A gear 1011 is provided on the drive shaft 101. A gear ring 202, meshing with the gear 1011, is provided on the side of the mixing drum 2. A striking rod 7, movably connected, is provided at the bottom of the adjusting frame 3. An annular boss 203, cooperating with the striking rod 7, is provided at the bottom of the mixing drum 2.

[0023] Furthermore, a first synchronous pulley 601 is provided on the output shaft of the drive motor 6, a second synchronous pulley 1012 that cooperates with the first synchronous pulley 601 is provided on the transmission shaft 101, a synchronous belt 104 for transmission is provided on the first synchronous pulley 601 and the second synchronous pulley 1012, and a stirring blade 204 is provided inside the stirring tank 2.

[0024] The drive motor 6 drives the transmission shaft 101 to rotate through the first synchronous pulley 601, the second synchronous pulley 1012 and the synchronous belt 104. The transmission shaft 101 drives the mixing drum 2 to rotate through the gear 1011 and the gear ring 202, thereby turning and mixing the cement inside the mixing drum 2.

[0025] Furthermore, the bottom of the adjusting frame 3 is provided with an ear plate 302, and the side of the striking rod 7 is provided with a second rotating shaft 703 that rotates in cooperation with the ear plate 302. The annular boss 203 has a serrated structure.

[0026] During the discharge process of the mixing drum 2, its upper opening will rotate to face the discharge direction, thereby tilting the bottom annular protrusion 203 upward. The striking rod 7 rests on the annular protrusion 203 under the action of gravity. During the rotation of the mixing drum 2, the end of the striking rod 7 slides along the serrated annular protrusion 203, thereby intermittently striking the mixing drum 2, knocking off the cement attached to the inner wall of the mixing drum 2, and improving the discharge effect.

[0027] Furthermore, the end of the striking rod 7 is provided with a counterweight head 701 and a striking head 702. The striking head 702 is slidably connected to the annular boss 203 and has a ball head structure.

[0028] The counterweight head 701 enhances the striking effect of the striking rod 7, while the ball-head structure of the striking head 702 makes the striking rod 7 slide more smoothly along the annular boss 203.

[0029] Furthermore, the end of the striking rod 7 furthest from the counterweight head 701 is provided with a limiting protrusion 704 for limiting the rotation angle of the striking rod 7.

[0030] The rotation angle of the striking rod 7 is limited by the limiting protrusion 704, so that when the mixing tank 2 is upright, the striking rod 7 is separated from the annular boss 203. When the mixing tank 2 is tilted downward to discharge material, the striking rod 7 can automatically rest on the annular boss 203 under its own weight, so as to achieve the effect of striking and lifting the material discharge.

[0031] Furthermore, the side of the equipment rack 1 is provided with a first slide groove 105, and the top of the first slide groove 105 is provided with a second slide groove 106 that communicates with the first shaft hole 107. The fixing pin 5 includes a pedal 501 and a pin 502. The pin 502 is fixedly installed on the upper end face of the pedal 501. The pedal 501 is installed in the first slide groove 105 and slidably connected to the equipment rack 1. The pin 502 is inserted into the second slide groove 106 and slidably connected to the equipment rack 1. The lower end face of the pedal 501 is provided with a spring 103. The side of the shaft tube 301 is provided with a pin hole 3011 that mates with the pin 502.

[0032] The pin 502 is inserted into the pin hole 3011 under the reset action of the spring 103, thereby fixing the shaft tube 301 to the equipment frame 1 and fixing the opening angle of the mixing tank 2. When the pedal 501 is stepped on, the pin slides down, so that the shaft tube 301 can be rotated by the steering wheel 4 to drive the adjusting frame 3 to rotate, thereby changing the opening orientation of the mixing tank 2 and switching between mixing and discharging.

[0033] Furthermore, there are eight pin holes 3011, which are equidistantly arranged in a circular array on the shaft tube 301, and the top of the pin shaft 502 is a dome structure.

[0034] Multiple sets of pin holes 3011 allow the shaft tube 301 to engage with the pin shaft 502 once every 45 degrees of rotation, which can meet various needs such as feeding, stirring, discharging and cleaning. The dome structure of the pin shaft 502 makes it easier to insert into the pin hole 3011.

[0035] When using this equipment, stepping on the pedal 501 in the first slide groove 105 on the side of the equipment frame 1 causes the pin 502 of the fixing pin 5 to slide downwards and disengage from the pin hole 3011 on the side of the shaft tube 301. At this time, the shaft tube 301 is rotated by the steering wheel 4, which drives the adjusting frame 3 to rotate, thereby changing the opening orientation of the mixing tank 2 so that its opening is tilted upwards. Releasing the pedal 501, under the reset action of the spring 103, the pin 502 slides upwards and inserts into the pin hole 3011 on the shaft tube 301, fixing the shaft tube 301 to the equipment frame 1, thereby fixing the opening angle of the mixing tank 2 for feeding. Various prepared concrete raw materials are poured into the mixing tank in sequence. Inside the mixing drum 2, after the material is loaded, the drive motor 6 is turned on. The output shaft of the drive motor 6 drives the first synchronous pulley 601 to rotate. The first synchronous pulley 601 drives the second synchronous pulley 1012 through the synchronous belt 104, which in turn causes the transmission shaft 101 to rotate. The gear 1011 on the transmission shaft 101 meshes with the gear ring 202 on the side of the mixing drum 2, causing the mixing drum 2 to rotate. At the same time, the mixing blades 204 inside the mixing drum 2 agitate and mix the concrete material inside the drum, making it fully mixed. When discharging, the pedal 501 is stepped on again, causing the pin 502 to disengage from the pin hole 3011. The shaft tube 301 is rotated by the steering wheel 4, causing the opening of the mixing drum 2 to rotate to an inclined downward. At this time, the annular boss 203 at the bottom of the mixing drum 2 tilts upward, and the mixing drum 2 rotates to discharge the material. During the discharge process, the striking rod 7, which is movably connected to the bottom of the adjusting frame 3, rests on the serrated annular boss 203 at the bottom of the mixing drum 2 under the action of gravity. As the mixing drum 2 rotates, the end of the striking rod 7 slides along the serrated annular protrusion 203, intermittently striking the mixing drum 2 to knock off the cement adhering to the inner wall of the mixing drum 2, thereby improving the discharge effect.

[0036] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A concrete mixer, comprising a frame (1), a mixing drum (2), an adjusting frame (3), and a drive motor (6), characterized in that: The equipment frame (1) is provided with a movable fixed pin (5), and the equipment frame (1) is provided with a rotatably connected drive shaft (101). The drive shaft (101) passes through the adjusting frame (3) and is rotatably connected to it. The side of the adjusting frame (3) away from the drive shaft (101) is provided with a shaft tube (301) rotatably connected to the equipment frame (1). A steering wheel (4) is fixedly installed on the shaft tube (301). The bottom of the mixing tank (2) is provided with a first rotating shaft. (201) The adjusting frame (3) is provided with a second shaft hole (303) that cooperates with the first rotating shaft (201). The transmission shaft (101) is provided with a gear (1011). The side of the mixing tank (2) is provided with a gear ring (202) that meshes with the gear (1011). The bottom of the adjusting frame (3) is provided with a movably connected striking rod (7). The bottom of the mixing tank (2) is provided with an annular boss (203) that cooperates with the striking rod (7).

2. The concrete mixing machine as described in claim 1, characterized in that: The output shaft of the drive motor (6) is provided with a first synchronous pulley (601), the transmission shaft (101) is provided with a second synchronous pulley (1012) that cooperates with the first synchronous pulley (601), the first synchronous pulley (601) and the second synchronous pulley (1012) are provided with a synchronous belt (104) for transmission, and the stirring tank (2) is provided with stirring blades (204).

3. The concrete mixing machine as described in claim 1, characterized in that: The bottom of the adjustment frame (3) is provided with an ear plate (302), the side of the striking rod (7) is provided with a second rotating shaft (703) that rotates with the ear plate (302), and the annular boss (203) has a sawtooth structure.

4. The concrete mixing machine as described in claim 3, characterized in that: The end of the striking rod (7) is provided with a counterweight head (701) and a striking head (702). The striking head (702) is slidably connected to the annular boss (203). The striking head (702) has a ball head structure.

5. A concrete mixing machine as described in claim 4, characterized in that: The striking rod (7) is provided with a limiting protrusion (704) at the end away from the counterweight head (701) to limit the rotation angle of the striking rod (7).

6. A concrete mixing machine as described in claim 1, characterized in that: The equipment rack (1) has a first slide groove (105) on its side, and a second slide groove (106) that communicates with the first shaft hole (107) is provided on the top of the first slide groove (105). The fixed pin (5) includes a pedal (501) and a pin (502). The pin (502) is fixedly installed on the upper end face of the pedal (501). The pedal (501) is installed in the first slide groove (105) and slidably connected to the equipment rack (1). The pin (502) is inserted into the second slide groove (106) and slidably connected to the equipment rack (1). A spring (103) is provided on the lower end face of the pedal (501). The side of the shaft tube (301) is provided with a pin hole (3011) that mates with the pin (502).

7. A concrete mixing machine as described in claim 6, characterized in that: The number of pin holes (3011) is eight, and the pin holes (3011) are arranged in an equidistant circular array on the shaft tube (301). The top of the pin shaft (502) is a dome structure.

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