Mixing drum and transport vehicle

Abstract

The utility model relates to the technical field of engineering machinery, and particularly provides a mixing drum and a transport vehicle. The stirring barrel comprises an outer barrel, one end is provided with a barrel opening, and the other end is a barrel bottom; the spiral blade spirally extends in the axial direction of the outer cylinder and is connected to the inner wall of the outer cylinder; the inner cylinder is located in a channel space defined by the inner edges of the spiral blades, the outer wall of the inner cylinder is connected with the spiral blades, an opening is formed in the end, facing the cylinder bottom, of the inner cylinder, and a baffle is arranged at the end, facing the cylinder opening, of the inner cylinder. The mixing drum provided by the utility model is suitable for conveying slurry such as concrete, the slurry such as the concrete in the drum can be insulated and isolated, water evaporation is reduced, the concrete is prevented from being solidified and dried, the conveying mileage of the concrete is expanded, and the problems that feeding pouring is blocked or the conveying mileage is limited due to the fact that the concrete is dried are solved; the production operation efficiency is improved and the production operation cost is saved.

Description

Technical Field

[0001] The present application relates to the technical field of engineering machinery, and in particular to a mixing drum and a transport vehicle. Background Art

[0002] A mixer truck is a vehicle that mixes and transports materials such as concrete. Taking concrete as an example, a mixer truck usually fills concrete in a mixing drum at a concrete production site, then transports the concrete to the destination (usually a construction site) and then outputs the concrete in the mixing drum to cooperate with the feeding mechanism to complete the pouring of the concrete. Since the temperature of the concrete is high when it enters the mixing drum, the concrete in the mixing drum will cool down and evaporate and lose water during transportation. If the transportation mileage and transportation time are long, the viscosity of the concrete will increase, the concrete will solidify and dry, affecting the output, feeding and pouring operations of the concrete, resulting in poor concrete output, limited feeding head, poor feeding and pouring effects, slow efficiency, and even the inability to feed to a higher position and difficult to complete pouring.

[0003] In the prior art, in order to prevent the concrete from being too dry, a large number of concrete production sites are usually built to expand the transportation range, but this also significantly increases the production and operation costs. Utility Model Content

[0004] In view of this, the embodiments of the present application are committed to providing a mixing drum suitable for conveying concrete and other slurries, which can insulate and isolate the concrete and other slurries in the drum, reduce water evaporation, prevent the concrete from solidifying and drying out, and expand the transportation mileage of the concrete, solve the problems of obstruction of material pouring or limited transportation mileage due to drying of concrete, improve production and operation efficiency, and save production and operation costs.

[0005] The present application provides a mixing drum, comprising:

[0006] The outer cylinder has a cylinder mouth at one end and a cylinder bottom at the other end;

[0007] A spiral blade is spirally extended along the axial direction of the outer cylinder and connected to the inner wall of the outer cylinder;

[0008] The inner cylinder is located in the channel space enclosed by the inner edge of the spiral blade, the outer wall is connected to the spiral blade, and an opening is provided at one end facing the bottom of the cylinder, and a baffle is provided at one end facing the cylinder mouth.

[0009] In a possible implementation, it further includes a feeding device located at the barrel mouth;

[0010] The feeding device has an opening structure at both ends, one end of the opening is connected to the barrel mouth and forms a feeding port for materials to enter the outer barrel, and the annular area of ​​the barrel mouth located between the outer wall of the feeding device and the inner wall of the outer barrel forms an outlet for materials to flow out.

[0011] In a possible implementation manner, a positioning structure is further included, wherein the positioning structure supports and fixes the inner cylinder so that the inner cylinder and the outer cylinder are coaxially arranged.

[0012] In a possible implementation manner, the positioning structure includes positioning guide plates abutting against the inner cylinder and evenly distributed along the circumference of the inner cylinder;

[0013] The positioning guide plate is at least arranged at one end of the inner cylinder close to the cylinder opening.

[0014] In a possible implementation manner, one end of the positioning guide plate is connected to the outer wall of the inner cylinder, and the other end is connected to the spiral blade or the outer cylinder.

[0015] In a possible embodiment, a first through hole is distributed on the side wall of the feeding device; and / or a first notch is provided on the side wall of the feeding device; and / or a second through hole is distributed on the side wall of the inner cylinder; and / or a second notch is provided on the side wall of the inner cylinder; and / or a third through hole is distributed on the baffle; and / or a fourth through hole is distributed on the spiral blade.

[0016] In a possible implementation manner, the diameter of the inner cylinder gradually decreases in a direction approaching the cylinder mouth; and the baffle is any one of a spherical shape, a conical shape, a polyhedron shape, and a flat plate shape.

[0017] In a possible implementation, the spiral blade is a groove structure, and its blade body is enclosed to form a flared groove-shaped material gathering groove, and the material gathering groove extends along the extension direction of the spiral blade to form a spiral feeding channel in the outer cylinder.

[0018] In a possible embodiment, the spiral blade includes a second sheet body, and a first sheet body and a third sheet body located on both sides of the second sheet body and connected to the second sheet body at an angle, and the first sheet body, the second sheet body and the third sheet body are combined to form the material gathering groove in the shape of a flared groove.

[0019] The present application also provides a transport vehicle, comprising a vehicle body and a mixing drum arranged on the vehicle body, wherein the mixing drum is a mixing drum as described in any one of the above items.

[0020] The mixing drum provided by the present application, when feeding, the slurry such as concrete will flow along the spiral blades to the bottom of the drum under the stirring and pushing action of the spiral blades, and then accumulate in the channel space surrounded by the inner edge of the spiral blades. In the present application, an inner drum is arranged in the channel space, and an opening is arranged at one end of the inner drum facing the bottom of the drum, and a baffle is arranged at one end facing the drum mouth opposite to the opening. Then, the concrete entering the outer drum will first flow to the bottom of the drum under the pushing action of the spiral blades, and then flow in the reverse direction after colliding with the bottom of the drum and pour into the inner drum, and then fill up the inner drum, and the concrete entering the mixing drum will not flow back to the drum mouth, and will increase the distance from the drum mouth, and will be separated from the drum mouth, reducing the contact with the outside air.

[0021] In this way, most of the concrete will be sealed in the outer tube, and under the thermal insulation effect of the inner tube itself, the thermal insulation effect of the space between the inner tube and the outer tube, and the covering effect of being away from the tube mouth and separated from the tube mouth by a baffle to reduce contact with the air, the evaporation of moisture in the concrete can be significantly reduced, the concrete can be prevented from solidifying and drying out, and the transportation mileage of the concrete can be expanded, solving problems such as obstruction of material pouring or limited transportation mileage due to drying of the concrete, thereby improving production and operation efficiency and saving production and operation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The figure shows the composition diagram of the mixing drum in the embodiment of the present application;

[0023] Figure 2 The figure shows a schematic diagram of the arrangement of the inner cylinder and the spiral blades in the embodiment of the present application;

[0024] Figure 3 Shown is a schematic diagram of the groove structure of the spiral blade in the embodiment of the present application;

[0025] Figure 4 Shown is an external schematic diagram of the mixing drum in an embodiment of the present application.

[0026] Figure 1-4 middle:

[0027] 1. Outer cylinder; 101. Discharge port; 2. Spiral blades; 201. Material gathering groove; 21. First sheet; 22. Second sheet; 23. Third sheet; 3. Inner cylinder; 31. Baffle; 4. Feeding device; 401. Feeding port; 5. Positioning guide plate. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] Please refer to the attached Figure 1-4 The embodiment of the present application provides a mixing drum suitable for containing slurry, such as concrete, etc. The mixing drum includes an outer drum 1, a spiral blade 2 and an inner drum 3 arranged in the outer drum 1. The first end of the outer drum 1 is provided with a drum mouth, and the second end is a closed structure to form a drum bottom; the spiral blade 2 is arranged to extend along the axial direction of the outer drum 1 in a spiral manner, and at the same time, the spiral blade 2 is connected to the inner wall of the outer drum 1, and the inner edges of different sections of the spiral blade 2 have a spacing in the radial direction, and do not form a radial stagger, and the inner edge of the spiral blade 2 surrounds a channel structure, which can also be said that the space in the outer drum 1 is divided into a channel space surrounded by the inner edge of the spiral blade 2 in the radial direction, and an annular space located between the inner edge of the spiral blade 2 and the inner wall of the outer drum 1 (also the space area covered by the projection of the spiral blade 2 in the axial direction). The inner drum 3 is arranged in the channel space surrounded by the inner edge of the spiral blade 2, and its outer wall is connected to the section of the spiral blade 2 in the circumferential direction of the inner drum 3, and is supported and fixed by the spiral blade 2, so that it can rotate together with the outer drum 1 and the spiral blade 2. The inner cylinder 3 is an open structure at one end, with an opening at the end facing the bottom of the cylinder and a baffle 31 at the end facing the mouth of the cylinder. This is equivalent to the inner cylinder 3 being inverted inside the outer cylinder 1. When feeding, the mixing cylinder rotates in the forward direction (clockwise or counterclockwise), and the spiral blade 2 rotates to stir and push the slurry into the cylinder. In addition, due to the centrifugal force, the slurry will flow along the spiral blade 2 in the annular space toward the bottom of the cylinder, and after colliding with the bottom of the cylinder, it will flow in the opposite direction and be pushed into the channel space surrounded by the inner edge of the spiral blade 2, and flow into the inner cylinder 3. As the spiral blade 2 continues to rotate and push, the slurry continues to flow into the inner cylinder 3, and then fills the inner cylinder 3. Due to the blocking effect of the baffle 31, the slurry will not flow out of the inner cylinder 3, will not overflow to the mouth of the cylinder, and will be separated from the mouth of the cylinder. The inner cylinder 3 not only contains and stores the slurry, but also covers the slurry, significantly reducing contact with the air. The same is true when the mixing drum is filled with concrete. Since the inner drum 3 is only an open structure at one end, it is inverted in the outer drum 1 to prevent the concrete from flowing back or overflowing to the drum mouth, and can increase the distance between the concrete and the drum mouth, so that the concrete is away from the drum mouth and separated from the drum mouth, significantly reducing contact with the air. During the feeding and transportation process, the mixing drum always maintains positive rotation, and the concrete always has a pushing force to push the concrete into the inner drum 3, so the concrete will always fill the inner drum 3 and be protected by the heat insulation of the inner drum 3.

[0030] With such a configuration, the inner cylinder 3 is inverted in the outer cylinder 1, and the concrete will be pushed into the inner cylinder 3 for storage by the continuous pushing action of the spiral blades 2. The inner cylinder 3 seals the concrete in the outer cylinder 1, which is equivalent to adding a cover to the outer cylinder 1 with a cylinder mouth, so that the concrete is separated from the cylinder mouth. The heat insulation effect of the inner cylinder 3 itself, the heat insulation effect of the space between the inner cylinder 3 and the outer cylinder 1, and the covering effect that the concrete is sealed in the inner cylinder 3, away from the cylinder mouth, separated from the cylinder mouth and basically not in contact with the air, the combination of multiple effects can significantly reduce the evaporation of water in the concrete, prevent the concrete from solidifying and drying, and prevent the problems of transportation obstruction during discharge, limited feeding head, and limited pouring due to the drying of the concrete. And because the mixing drum provided by the present application can enhance the heat insulation of concrete, reduce the evaporation of water in concrete, and have the effect of keeping concrete warm, fresh and dry, that is, it can expand the transportation mileage of concrete, expand the transportation range of concrete by the transport vehicle with the mixing drum, and in practical applications, it can reduce the number of concrete production sites, expand the supply range that the site can cover, improve production and operation efficiency, and save production and operation costs. At the same time, the slurry in the mixing drum fills the inner drum 3 and is constrained by the inner drum 3. Compared with the prior art in which the slurry is directly filled in the outer drum 1 in an unfilled state, when the mixing drum of the present application is set on the transport vehicle to transport the slurry, the center of mass offset of the slurry is small during transportation, the slurry has a low degree of swaying, and the driving safety is high.

[0031] On the transport vehicle, the mixing drum is tilted, with the drum mouth higher than the drum bottom, and the inner drum 3 is also tilted with the mixing drum. During the feeding and transportation process, the mixing drum and the spiral blades 2 always maintain forward rotation, and keep pushing the slurry to the drum bottom and the inner drum 3, so that the slurry can be contained in the inner drum 3, and the slurry can be isolated from the drum mouth and prevented from drying out to keep it warm and fresh. When the slurry is transported to the destination and needs to be discharged, the mixing drum stops rotating, and the slurry will flow out from the opening of the inner drum 3. The mixing drum and the spiral blades 2 rotate in the opposite direction, pushing the slurry to the discharge port 101 at the drum mouth, and the slurry can be transported to the outside of the drum to complete the unloading.

[0032] In some embodiments, the inner cylinder 3 may be in a frustum shape, and the diameter of the inner cylinder 3 gradually decreases in the direction close to the cylinder mouth. Of course, in some other embodiments, the inner cylinder may also be other structures, such as a cylinder, a cone, a polyhedron, etc.

[0033] The baffle 31 is the bottom plate of the inner tube 3. In some embodiments, the baffle 31 is a flat plate. In some embodiments, the inner wall of the baffle 31 is a spherical structure, or, Figure 2 As shown, the baffle 31 is spherical as a whole and is a spherical panel structure. With such arrangement, there will be no dead angle or narrow angle between the inner bottom wall and the inner side wall of the inner tube 3, preventing residual slurry from being difficult to clean.

[0034] In some embodiments, the baffle 31 may also be conical or polyhedral with multiple faces, for example, its cross section is triangular or polygonal.

[0035] like Figure 1 As shown, a feeding device 4 is also provided at the barrel mouth in the mixing barrel, and the feeding device 4 is an opening structure at both ends, one end opening is connected to the barrel mouth and forms a feeding port 401, and the other end opening is connected to the barrel cavity of the outer barrel 1 and is connected to the channel space surrounded by the inner edge of the spiral blade 2. The slurry flows into the outer barrel 1 from the feeding port 401 through the feeding device 4, and is then pushed to the bottom of the barrel by the spiral blade 2 and finally flows into the inner barrel 3.

[0036] The annular area between the outer wall of the feed device 4 and the inner wall of the outer barrel 1 at the barrel mouth forms a discharge port 101 for the material to flow out. The discharge port 101 is formed by the annular area and is annular, and its inner annular space is the feed port 401. The spiral blade 2 can extend all the way to the barrel mouth, and the feed device 4 is located in the channel space enclosed by the inner edge of the spiral blade 2, and can be connected to the spiral blade 2 and supported and fixed by the spiral blade 2.

[0037] When feeding, the slurry is fed from the feed port 401 on the feed device 4, first enters the feed device 4, then flows out from the opening at the other end of the feed device 4, and then flows to the bottom of the cylinder under the stirring and pushing of the spiral blade 2. As the slurry accumulates and contacts the inner cylinder 3, part of the slurry flows into the inner cylinder 3 under the continuous feeding and continuous pushing of the spiral blade 2, and then fills the inner cylinder 3. In this way, feeding through the feed device 4 instead of directly feeding from the cylinder mouth into the outer cylinder 1 can prevent the slurry at the cylinder mouth from being stirred by the spiral blade 2 and splashing, which wastes materials and affects the feeding rate.

[0038] When discharging, the slurry flows out from the inner tube 3 and accumulates at the bottom of the tube. The spiral blade 2 reverses to push the slurry to the tube mouth. The slurry flows along the spiral blade 2 from between the feeding device 4 and the inner wall of the outer tube 1 to the tube mouth, and then flows out from the annular feeding port 401.

[0039] The feeding device 4 may be in the shape of a cone, and a first through hole may be provided on its side wall, and a first notch may be provided on the side wall to communicate with the opening at one end near the bottom of the cylinder. In this way, the weight can be reduced and the feeding rate of the slurry can be increased.

[0040] The feeding device 4 is located at the barrel opening end of the outer barrel 1, and can be arranged flush with the barrel opening or have a partial section extending out of the barrel opening and located outside the barrel opening.

[0041] The inner cylinder 3 is located inside the outer cylinder 1. Figure 1As shown, in the axial direction of the outer cylinder 1, there may be a distance between the inner cylinder 3 and the feeding device 4, and of course they may be connected. In this way, the mixing cylinder can hold as much slurry as possible without affecting the feeding and ensuring that the slurry does not overflow from the mixing cylinder during transportation.

[0042] The axis of the inner cylinder 3 can coincide with or substantially coincide with the axis of the outer cylinder 1. When the axis of the inner cylinder 3 coincides with the axis of the outer cylinder 1, not only can the inner cylinder 3 be more stable in the process of rotating with the outer cylinder 1, the rotation of the entire mixing cylinder is more stable, and it is also conducive to smooth feeding, storage of more slurry, and increase of slurry storage and transportation capacity.

[0043] In some embodiments, a positioning structure is further provided in the outer cylinder 1 of the mixing cylinder, which supports and fixes the inner cylinder 3 and is configured to limit the direction and angle of the central axis of the inner cylinder 3 so that the central axis of the inner cylinder 3 can coincide with the central axis of the outer cylinder 1, thereby improving the coaxiality of the inner cylinder 3 and the outer cylinder 1.

[0044] Specifically, the positioning structure includes a positioning guide plate 5 abutting against the inner cylinder 3; the positioning guide plates 5 are symmetrically distributed along the axial direction of the inner cylinder 3 or evenly distributed along the circumference of the inner cylinder 3. At the same time, the outer wall of the inner cylinder 3 is connected to the section of the spiral blade 2 located in its circumferential direction. In this way, the inner cylinder 3 is supported by the spiral blade 2 and is assisted in positioning by the positioning structure. The symmetrical support of the spiral blade 2 and the positioning guide plate 5 in the circumferential direction not only ensures a stable connection and does not shake during rotation, but also has high positioning accuracy, thereby improving the coaxiality of the inner cylinder 3 and the outer cylinder 1.

[0045] The positioning guide plate 5 is at least arranged at one end of the inner tube 3 close to the tube opening to reinforce and support the small diameter section of the inner tube 3 .

[0046] One end of the positioning guide plate 5 is connected to the inner cylinder 3 , and the other end is connected to the spiral blade 2 or the inner wall of the outer cylinder 1 , so as to strengthen the stable support for the inner cylinder 3 and prevent the inner cylinder 3 from shaking or deviating and affecting the coaxiality with the outer cylinder 1 .

[0047] In some specific embodiments, the positioning guide plate 5 includes a first plate segment and a second plate segment that are connected or integrally formed.

[0048] The first plate section is formed with a groove for partial embedding of the inner tube 3 and is closely connected to the outer wall of the inner tube 3 .

[0049] The second plate section is connected to the spiral blade 2 or the outer cylinder 1. Figure 1 As shown, the positioning guide plate 5 may be L-shaped.

[0050] The first plate segment can be arranged radially, and an arc-shaped groove is arranged at the end thereof so as to be closely connected with the outer wall of the inner cylinder 3 .

[0051] The second plate segment can be connected to the spiral blade 2. Alternatively, the second plate segment has an arc surface, and is connected to the inner wall of the outer cylinder 1 through the arc surface. The arc surface can be set on the plate surface of the second plate segment, or the second plate segment is an arc plate, which is attached to the inner wall of the outer cylinder 1, increasing the area and the degree of attachment of the connection surface, and enhancing the stability of the connection and the positioning of the inner cylinder 3.

[0052] In some embodiments, a heat insulating structure is provided on the body of the inner cylinder 3. For example, the body of the inner cylinder 3 is a multi-layer composite structure and is provided with a heat insulating layer, which at least includes a vacuum insulation layer and / or a heat insulating material layer. The heat insulating material layer may be a layer formed by heat insulating cotton, heat insulating film, heat insulating coating or other heat insulating materials.

[0053] The inner cylinder 3 may be provided with through holes, for example, a plurality of second through holes connecting the inner cylinder cavity and the outer cylinder cavity are distributed on the side wall of the inner cylinder 3, and a third through hole connecting the inner cylinder cavity and the outer cylinder cavity may be provided on the baffle 31. With such a configuration, on the one hand, the overall weight is reduced, which is conducive to expanding the volume of the mixing cylinder and increasing the capacity for slurry. On the other hand, when the slurry enters and fills the inner cylinder 3, it plays a role in balancing the air pressure inside and outside the cylinder, preventing incomplete filling, and also increasing the feeding rate. In some embodiments, the side wall of the inner cylinder 3 may also be provided with a second notch connected to the opening toward the bottom of the outer cylinder, so that the weight of the inner cylinder and the overall weight of the entire mixing cylinder can be reduced, which is conducive to increasing the storage capacity.

[0054] like Figure 1 As shown, in the axial direction of the outer cylinder 1, the spiral blades 2 are continuously extended in a spiral shape.

[0055] In some embodiments, the spiral blade 2 is a groove structure, and the spiral blade 2 is surrounded by a material gathering groove 201 in the shape of an expanded groove. In the axial direction of the outer cylinder 1, the groove of the material gathering groove 201 faces the end of the cylinder mouth. It can also be said that the spiral blade 2 is formed with a material gathering groove 201 in the shape of an expanded groove on the side facing the cylinder mouth. The expanded groove refers to the direction from the bottom of the groove to the groove mouth, and the distance between the groove walls on both sides gradually increases.

[0056] The spiral blade 2 is continuously extended in a spiral shape, and the material collecting groove 201 extends along the extension direction of the spiral blade 2 to form a spiral feeding channel in the outer tube 1. In this way, compared with the spiral blade 2 being a flat sheet, the spiral blade 2 in the groove shape in this embodiment can push more slurry when pushing the slurry, and can also promote the slurry to flow along the spiral blade 2, so that the pushing is smoother and the pushing effect is better.

[0057] like Figure 2 and Figure 3As shown, the spiral blade 2 includes a first sheet 21, a second sheet 22 and a third sheet 23. The first sheet 21 and the third sheet 23 are located on both sides of the second sheet 22 and are connected to the second sheet 22 at an angle. The first sheet 21, the second sheet 22 and the third sheet 23 enclose a material gathering groove in the shape of an expanded groove.

[0058] In some embodiments, a plurality of fourth through holes are distributed along the extension direction of the spiral blade 2 and are through-holes along the thickness direction of the blade. The provision of the fourth through holes can increase the flow rate of the slurry, enhance the feeding and discharging efficiency, and also enhance the stirring effect, making the slurry mixed more evenly.

[0059] An embodiment of the present application further provides a transport vehicle, comprising a vehicle body and a mixing drum arranged on the vehicle body, the mixing drum being the mixing drum described in any of the above embodiments, and the transport vehicle has the beneficial effects described in the above embodiments.

[0060] It should be noted that the first through hole, the second through hole, the third through hole, and the fourth through hole are only used to more clearly explain the technical solution and to distinguish the positions where these through holes are set. They are not used to limit the number, size, and other parameters of these through holes, and are not used to limit the protection scope of this application. The number and size of the first through hole, the second through hole, the third through hole, and the fourth through hole may be the same or different, and the specific setting is not limited.

[0061] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0062] The components and devices involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the drawings. As will be appreciated by those skilled in the art, these components and devices can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, meaning "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The word "such as" used here refers to the phrase "such as but not limited to", and can be used interchangeably with it.

[0063] It should also be noted that in the device and apparatus of the present application, each component can be decomposed and / or reassembled, and such decomposition and / or reassembly should be regarded as an equivalent solution of the present application.

[0064] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0065] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

[0066] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A mixing drum, characterized in that: include: The outer cylinder has a cylinder mouth at one end and a cylinder bottom at the other end; A spiral blade is spirally extended along the axial direction of the outer cylinder and connected to the inner wall of the outer cylinder; The inner cylinder is located in the channel space enclosed by the inner edge of the spiral blade, the outer wall is connected to the spiral blade, and an opening is provided at one end facing the bottom of the cylinder, and a baffle is provided at one end facing the cylinder mouth.

2. The mixing drum according to claim 1, characterized in that: Also includes a feeding device located at the barrel mouth; The feeding device has an opening structure at both ends, one end of the opening is connected to the barrel mouth and forms a feeding port for materials to enter the outer barrel, and the annular area of ​​the barrel mouth located between the outer wall of the feeding device and the inner wall of the outer barrel forms an outlet for materials to flow out.

3. The mixing drum according to claim 1, characterized in that: It also includes a positioning structure, which supports and fixes the inner cylinder so that the inner cylinder and the outer cylinder are coaxially arranged.

4. The mixing drum according to claim 3, characterized in that: The positioning structure comprises positioning guide plates abutting against the inner cylinder and evenly distributed along the circumference of the inner cylinder; The positioning guide plate is at least arranged at one end of the inner cylinder close to the cylinder opening.

5. The mixing drum according to claim 4, characterized in that: One end of the positioning guide plate is connected to the outer wall of the inner cylinder, and the other end of the positioning guide plate is connected to the spiral blade or the outer cylinder.

6. The mixing drum according to claim 2, characterized in that: A first through hole is distributed on the side wall of the feeding device; and / or, a first notch is arranged on the side wall of the feeding device; and / or, a second through hole is distributed on the side wall of the inner cylinder; and / or, a second notch is arranged on the side wall of the inner cylinder; and / or, a third through hole is distributed on the baffle; and / or, a fourth through hole is distributed on the spiral blade.

7. The mixing drum according to claim 1, characterized in that: The diameter of the inner cylinder gradually decreases in the direction approaching the cylinder mouth; the baffle is any one of a spherical shape, a conical shape, a polyhedron shape and a flat plate shape.

8. The mixing drum according to claim 1, characterized in that: The spiral blade is a groove structure, and its blade body is enclosed to form a material gathering groove in the shape of an expanded groove. The material gathering groove extends along the extension direction of the spiral blade to form a spiral feeding flow channel in the outer cylinder.

9. The mixing drum according to claim 8, characterized in that: The spiral blade includes a second sheet, and a first sheet and a third sheet located on both sides of the second sheet and connected to the second sheet at an angle. The first sheet, the second sheet and the third sheet together form the material gathering groove in the shape of a flared groove.

10. A transport vehicle, characterized in that: The invention comprises a vehicle body and a mixing drum arranged on the vehicle body, wherein the mixing drum is the mixing drum according to any one of claims 1 to 9.

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