Concrete mixing machine

Abstract

The invention provides a concrete mixing machine which comprises a vehicle body, a lifting device, a stirring device and a conveying device, the lifting device is located at the top of the vehicle body and comprises a lifting frame and a traction piece connected to the lifting frame in a sliding mode, and a supporting mechanism is arranged between the lifting frame and the vehicle body; the lifting frame can be in a supported state or a folded state through the supporting mechanism; the stirring device comprises at least one stirring pot located in the vehicle body, a discharge port is formed in the bottom of the stirring pot, the conveying device comprises a first conveying belt frame and a second conveying belt frame, the first conveying belt frame is located below the discharge port, the second conveying belt frame is located outside the vehicle body, and the first conveying belt frame and the second conveying belt frame are rotationally connected. The second conveying belt frame can be folded or stretched relative to the first conveying belt frame; the concrete mixer truck has the advantages that compared with a traditional concrete mixer truck, the concrete mixer truck can facilitate feeding of materials, unloading of concrete materials and conveying of the concrete materials, is suitable for being matched with all equipment in a construction site, and can save labor.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete mixing equipment, and more particularly to a concrete mixer. Background Art

[0002] Concrete mixers are widely used in concrete production and mixing in the fields of construction, roads, bridges, water conservancy, etc. At present, mobile concrete mixers are mainly vehicle-mounted. Cement, sand, gravel and water are poured into the mixing drum in the mixing truck in a certain proportion, and the mixing drum rotates for mixing.

[0003] However, this type of mixer truck is more laborious when pouring materials, and needs to be poured into the mixing drum manually or with the help of auxiliary equipment. In addition, when discharging materials, this type of mixer truck needs to receive materials at a receiving port on one side of the mixing drum, and then pour the concrete materials into the sliding film machine. If a separate conveying device is provided at the receiving port, the conveying device is likely to affect the driving of the concrete mixer truck, and the accuracy of concrete discharging cannot be guaranteed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide a concrete mixer, which is convenient for the feeding, unloading and transportation of materials, is suitable for the coordination between construction sites and various equipments, and can save labor.

[0005] To achieve the above object, the present invention provides the following technical solutions: A concrete mixer comprises a body, a lifting device, a stirring device and a conveying device. The lifting device is located on the top of the vehicle body, and includes a lifting frame and a traction member slidably connected to the lifting frame. A supporting mechanism is provided between the lifting frame and the vehicle body, and the supporting mechanism is used to drive the lifting frame to move so that the lifting frame is away from the top of the vehicle body and is in a propped-up state, or so that the lifting frame is close to the top of the vehicle body and is in a folded state; The stirring device comprises at least one stirring pot, the stirring pot is located in the vehicle body below the lifting frame, and a discharge port is provided at the bottom of the stirring pot, and the discharge port runs through the bottom of the vehicle body; The conveying device includes a first conveyor belt frame and a second conveyor belt frame, the first conveyor belt frame is located below the discharge port, the second conveyor belt frame is located outside the vehicle body, the first conveyor belt frame and the second conveyor belt frame are rotatably connected, and the first conveyor belt frame is provided with a first driving member, and the first driving member is used to drive the second conveyor belt frame to move so that the second conveyor belt frame is folded or stretched relative to the first conveyor belt frame.

[0006] Furthermore, the supporting mechanism includes a supporting arm, a first diagonal rod and a first power member, one end of the supporting arm is rotatably connected to the main frame, and the other end is rotatably connected to the vehicle body, one end of the first diagonal rod is rotatably connected to the supporting arm, and the other end is movably connected to the vehicle body, and the first power member is used to drive one end of the first diagonal rod connected to the vehicle body to move, so that the supporting arm can be rotated to stand up or rotated and folded onto the vehicle body.

[0007] Furthermore, the supporting mechanism also includes a second power member, which is located at one end of the vehicle body away from the first driving member. When the main frame is in a folded state, the driving end of the second power member is connected to the lower surface of the main frame.

[0008] Furthermore, the sliding direction of the traction member is defined as a first direction, the length of the main frame in the first direction is greater than the length of the vehicle body in the first direction, and a second diagonal rod is provided between the main frame and the vehicle body, one end of the second diagonal rod is movably connected to the vehicle body, and the other end is rotatably connected to an end of the main frame extending outside the vehicle body.

[0009] Furthermore, a slide is provided on the vehicle body, and one end of the second oblique rod is slidably connected in the slide.

[0010] Furthermore, the first conveyor belt frame includes a first conveyor section and a second conveyor section, one end of the second conveyor section is rotatably connected to the second conveyor belt frame, and the other end is rotatably connected to the first conveyor belt section, both sides of the second conveyor section are rotatably connected with second driving members, one end of the second driving member is rotatably connected to the second conveyor section, and the other end is rotatably connected to the vehicle body, and the second driving member drives the second conveyor section to move so that the second conveyor section is parallel or inclined relative to the first conveyor section.

[0011] Furthermore, one end of the first driving member is rotatably connected to one side of the first conveyor belt frame, and the other end is rotatably connected to one side of the second conveyor belt frame, and the driving direction of the first driving member and the transmission direction of the second conveyor belt frame have an angle.

[0012] Furthermore, the two sides of the second conveyor belt frame are rotatably connected with hanging rods for connecting the vehicle body, and the two sides of the second conveyor belt frame are also provided with fasteners. When the hanging rods are parallel to the transmission direction of the second conveyor belt frame, the hanging rods are inserted into the fasteners.

[0013] Furthermore, pressure rollers are provided on the conveyor belt surface at the connection between the first conveyor section and the second conveyor section and on the conveyor belt surface at the connection between the second conveyor section and the second conveyor belt frame.

[0014] Furthermore, a push rod for connecting to a sliding film paver is provided at one end of the vehicle body.

[0015] Beneficial effects of the present invention: 1. By arranging a lifting device, a stirring device and a conveying device on the vehicle body, the ton bag can be lifted to the top of the stirring device by the lifting device and unloaded, and then the stirred concrete material is directly discharged from the discharge port below to the conveying device, and is transported to the slipform machine through the conveying device. Compared with the traditional concrete mixer truck, the present invention can facilitate the delivery of materials, the unloading of concrete materials and the transportation of concrete materials, is suitable for the coordination of construction sites and various equipment, and can save labor.

[0016] 2. By setting up a supporting mechanism, the main frame can be in a propped up state or a folded state, which is convenient for the use and storage of the main frame. When used in a concrete mixer truck, the lifting frame is installed on the vehicle body, and the main frame is used to lift ton bags. By supporting the main frame, space for transporting ton bags can be provided, and by folding the main frame, the height of the entire vehicle can be lowered.

[0017] By rotatably connecting the first conveyor belt frame and the second conveyor belt frame, and then driving the second conveyor belt frame to move by the first driving member, the second conveyor belt frame can be folded or extended relative to the first conveyor belt frame, which is convenient for storage and use and can be applied to more specific scenarios, such as conveying concrete to a certain location on a concrete mixer truck. If the excessively long conveyor belt frame cannot be moved, it will cause the occupied space to be too large and the vehicle body to be too long, thus affecting construction or traffic. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the overall structure diagram of the present invention; Figure 2 It is a folding diagram of the lifting frame in the present invention; Figure 3 It is a support diagram of the lifting frame in the present invention; Figure 4 It is a folded diagram of the conveying mechanism in the present invention; Figure 5 It is an expanded view of the conveying mechanism in the present invention.

[0019] : 1. vehicle body; 2. lifting device; 21. main frame; 211. crossbeam; 212. reinforcement arm; 22. sub-frame; 23. support arm; 24. first diagonal rod; 25. first power member; 26. second power member; 27. second diagonal rod; 28. slide; 291. traction slide; 292. traction winch; 3. stirring device; 4. conveying device; 41. first conveyor belt frame; 401. first conveying section; 402. second conveying section; 42. second conveyor belt frame; 43. first driving member; 44. hanging rod; 45. second driving member; 46. connecting member; 47. fastener; 48. extension section; 49. discharge cover; 5. pressure roller; 6. connecting column; 7. push rod. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0021] Since the existing mixer truck is laborious when pouring materials, it is necessary to pour the mixed material into the mixing drum manually or relying on auxiliary equipment. In addition, when discharging materials, the mixer truck needs to receive materials at a material receiving port on one side of the mixing drum, and then pour the concrete material into the sliding film machine. If a separate conveying device 4 is provided at the material receiving port, the conveying device 4 is likely to affect the driving of the concrete mixer truck, and the accuracy of concrete discharging cannot be guaranteed; therefore, the present invention designs such a concrete mixer, such as Figure 1 As shown, it includes a vehicle body 1, a lifting device 2, a stirring device 3 and a conveying device 4. The lifting device 2 is located on the top of the vehicle body 1. The lifting device 2 includes a lifting frame and a traction member slidably connected to the lifting frame. A supporting mechanism is provided between the lifting frame and the vehicle body 1. The supporting mechanism is used to drive the lifting frame to move so that the lifting frame is away from the top of the vehicle body 1 and is in a propped-up state, or the lifting frame is close to the top of the vehicle body 1 and is in a folded state, which is convenient for the use and storage of the main frame 21. When it is used on a concrete mixer truck, the lifting frame is used to be installed on the vehicle body 1. The main frame 21 is used to lift ton bags. By supporting the main frame 21, space for transporting ton bags can be provided. By folding the main frame 21, the height of the entire vehicle can be reduced. The stirring device 3 includes at least one stirring pot (the present invention includes two stirring pots, which are respectively arranged in the length direction of the lifting frame). The stirring pot is located in the vehicle body 1 below the lifting frame. The concrete raw materials are stirred by the paddles in the stirring pot. The bottom of the stirring pot is provided with a discharge port, which runs through the bottom of the vehicle body 1. The conveying device 4 includes a first conveyor belt frame 41 and a second conveyor belt frame 42. The first conveyor belt frame 41 is located below the discharge port, and the second conveyor belt frame 42 is located outside the vehicle body 1. The first conveyor belt frame 41 and the second conveyor belt frame 42 are rotatably connected. The first conveyor belt frame 41 is provided with a first driving member 43, and the first driving member 43 is used to drive the second conveyor belt frame 42 to move so that the second conveyor belt frame 42 can be folded or extended relative to the first conveyor belt frame 41. By rotatably connecting the first conveyor belt frame 41 and the second conveyor belt frame 42, and then driving the second conveyor belt frame 42 to move by the first driving member 43, the folding or extension relative to the first conveyor belt frame 41 is achieved, which is convenient for storage and use, and can be applied to more specific scenarios, such as transporting concrete to a certain position on a concrete mixer truck. If the excessively long conveyor belt frame cannot be moved, it will cause excessive space to be occupied and the vehicle body 1 to be too long, which will affect construction or traffic.

[0022] The working principle of the present invention is as follows: after the traction piece on the lifting frame hangs the ton bag, the lifting frame stands up to lift the ton bag, the traction piece slides on the lifting frame to transfer the lifted ton bag to the top of the mixing pot, the worker stands on the two side brackets of the vehicle body 1, unties the bag mouth of the ton bag, and pours the concrete raw materials in the ton bag into the mixing pot. There are two mixing pots, that is, the two mixing pots are used separately and at intervals, which can ensure the uninterrupted discharge of concrete. After the mixing pot is stirred to a certain extent, the discharge port at the bottom of the mixing pot is opened, and the concrete in the mixing pot falls to the first conveyor belt frame below under the action of gravity. The first conveyor belt frame transports the concrete to the second conveyor belt frame. Before this, the second conveyor belt frame is opened from a folded state to an extended state under the drive of the oil cylinder. The second transmission section adjusts the inclination angle of the second transmission section and the second conveyor belt frame under the action of the oil cylinder, so that the discharge end of the second conveyor belt frame is aligned with the sliding film machine, and the concrete is transmitted from the first transmission section to the second transmission section, and then to the second conveyor belt frame until it enters the sliding film machine.

[0023] like Figure 2 and Figure 3 As shown, the supporting mechanism also includes a sub-frame 22, which is located below the main frame 21. The sub-frame 22 is used to connect with the top of the vehicle body 1, and the length and width of the sub-frame 22 are adapted to the top frame of the vehicle body 1. The sliding direction of the traction member is defined as the first direction. The length of the main frame 21 in the first direction is greater than the length of the sub-frame 22 in the first direction. The purpose is to extend the sliding distance of the traction member to adapt to long-distance transportation. In addition, it is more suitable for installation on the concrete mixer vehicle body 1. The extended length of the main frame 21 makes it convenient for workers to stand behind the vehicle body 1 and hang ton bags on the traction member of the main frame 21; the supporting mechanism includes support arms 23 (four), a first oblique rod 24 and a first power member 25 (cylinder). The support arm 23 is located between the main frame 21 and the sub-frame 22. One end of the support arm 23 is rotatably connected to the main frame 21, and the other end is rotatably connected to the sub-frame 22 (in order to improve The stability of the main frame 21 when it is propped up, the support arm 23 is optimally arranged at the four corners of the sub-frame 22), one end of the first oblique rod 24 is rotatably connected to the support arm 23, and the other end is movably connected to the sub-frame 22 (the sub-frame 22 is provided with a slide rail arranged along the first direction, the end of the first oblique rod 24 is provided with a slider, and the end of the first oblique rod 24 is rotatably connected to the slider), the first power member 25 is used to drive one end of the first oblique rod 24 connected to the sub-frame 22 to move, so that the support arm 23 is rotated to stand up or rotated and folded onto the sub-frame 22. The support arm 23 is initially stacked between the sub-frame 22 and the main frame 21. When the main frame 21 needs to be propped up, the first power member 25 drives the first oblique rod 24 to be pushed in the first direction. At this time, the support arm 23 is folded to stand up. When the first oblique rod 24 slides a certain distance, the support arm 23 is 90 degrees perpendicular to the sub-frame 22.

[0024] Since the length of the main frame 21 is greater than that of the sub-frame 22, the first diagonal rods 24 in the present invention are divided into two groups, which are symmetrically arranged at the end of the main frame 21 that does not extend from the sub-frame 22. However, in order to facilitate the rapid propping up of the main frame 21, the propping up mechanism also includes a second power member 26 (cylinder). The second power member 26 is located at the end of the sub-frame 22 away from the first power member 25. When the main frame 21 is in a folded state, the driving end of the second power member 26 is connected to the lower surface of the main frame 21. When the first power member 25 starts to push the first diagonal rod 24, the driving end of the second power member 26 starts to lift the main frame 21 upward, and prop up the main frame 21 synchronously with the first power member 25.

[0025] Since the length of the main frame 21 is greater than the auxiliary frame 22, when the weight of the object to be lifted is too heavy, in order to facilitate the stability of the main frame 21, a second diagonal rod 27 is also provided between the main frame 21 and the auxiliary frame 22, and the slide 28 is located on one side of the auxiliary frame 22. The slide 28 is arranged along the first direction, and a slide groove is provided in the extension direction of the slide 28. One end of the second diagonal rod 27 is slidably connected in the slide groove of the slide 28, and the other end is rotatably connected to the end of the main frame 21 that extends outside the auxiliary frame 22. When the main frame 21 is in a folded state, one end of the second diagonal rod 27 in the slide groove is located close to one end of the first diagonal rod 24. When the main frame 21 is propped up, one end of the second diagonal rod 27 in the slide groove slides along the direction of the slide groove until the second diagonal rod 27, the main frame 21 and the support arm 23 are arranged in a triangle, which can provide better stability.

[0026] In addition, the slide 28 has a slope section and a flat section, and the slope section is located close to the first power member 25, that is, the end of the slide 28 close to the first power member 25 is higher than the end away from the first power member 25. When the main frame 21 is in a folded state, one end of the second diagonal rod 27 in the slide groove is located on the slope section. When the main frame 21 is propped up, one end of the second diagonal rod 27 in the slide groove slides down along the slope section to facilitate the movement and propping up of the second diagonal rod 27 until the second diagonal rod 27 slides into the flat section and continues to slide.

[0027] The traction member is located on the main frame 21, and the traction member includes a traction slide 291 (traction vehicle) and a traction winch 292 (winch and winch rope). The traction slide 291 is provided with a hook at one end facing the sub-frame 22. The main frame 21 is provided with a crossbeam 211 along the first direction. The traction winch 292 is used to drive the traction slide 291 to slide on the crossbeam 211. The main frame 21 is also provided with a plurality of reinforcing arms 212 for connecting the crossbeam 211 and the main frame 21, so as to improve the stability of the crossbeam 211.

[0028] like Figure 4 and Figure 5As shown, one end of the first driving member 43 (cylinder) is rotatably connected to one side of the first conveyor belt frame 41, and the other end is rotatably connected to one side of the second conveyor belt frame 42 (in order to stably drive the second conveyor belt frame, the first driving member 43 includes two groups, which are respectively arranged on the opposite sides of the first conveyor belt frame 41 and the second conveyor belt frame 42). The driving direction of the first driving member 43 and the transmission direction of the second conveyor belt frame have an angle, which facilitates the extension and retraction of the first driving member 43 to drive the rotation of the second conveyor belt frame from folding to stretching. Compared with the driving direction of the first driving member 43 being parallel to the transmission direction of the second conveyor belt frame, the setting of this angle can ensure that the rotation of the second conveyor belt frame will not be stuck and restricted.

[0029] like Figure 5 As shown, the two sides of the second conveyor belt frame 42 are rotatably connected with hanging rods 44 for limiting the second conveyor belt frame 42, and the two sides of the second conveyor belt frame 42 are also provided with fasteners 47. When the hanging rods 44 are parallel to the transmission direction of the second conveyor belt frame 42, the hanging rods 44 are snapped into the fasteners 47. On the concrete mixer truck, the first conveyor belt frame is located at the bottom of the concrete mixer truck and is used to carry the concrete unloaded from the bottom of the vehicle. The second conveyor belt frame extends outside the vehicle body 1. When the first driving member 43 drives the second conveyor belt frame to rotate and fold and stand up, in order to improve the stability of the second conveyor belt frame when it is folded and stood up, it is hung on the vehicle body 1 through the hanging rods 44 on both sides. The hanging rods 44 can rotate to adapt to the second conveyor belt frame 42 folded at different angles. When the second conveyor belt frame 42 is unfolded, in order to facilitate the placement of the hanging rods 44, the hanging rods 44 are snapped into the fasteners 47.

[0030] like Figure 4 and Figure 5 As shown, in order to adjust the discharge position height of the second conveyor belt frame, the first conveyor belt frame 41 includes a first conveying section 401 and a second conveying section 402, which is applied to a concrete mixer truck. The length of the first conveying section 401 is the same as the length of the vehicle body 1 and is horizontally located at the bottom of the vehicle body 1. The second conveying section 402 is shorter and exposed outside the vehicle body 1. One end of the second conveying section 402 is rotatably connected to the second conveyor belt frame 42, and the other end is rotatably connected to the first conveyor belt segment. The two sides of the second conveying section 402 are rotatably connected to the second conveyor belt frame 42. The driving member 45 (oil cylinder) drives the second conveying section 402 to move so that the second conveying section 402 is parallel or inclined relative to the first conveying section 401, that is, the second conveying section 402 is pulled by the second driving member 45 to change the height of the second conveying section 402, thereby changing the height of the second conveying belt frame 42; in the structure of the concrete mixer truck, one end of the second driving member 45 away from the second conveying section 402 is rotatably connected to the connecting member 46, and the connecting member 46 rotatably fixes the end of the second driving member 45 on the vehicle body 1.

[0031] An extension section 48 is provided at one end of the second conveyor belt frame 42 away from the first conveyor belt frame 41, and a feeding angle is provided between the extension section 48 and the transmission direction of the second conveyor belt frame 42, so that the material is thrown downwardly from the second conveyor belt frame 42. Compared with the traditional conveyor belt being thrown directly upwardly, the downward throwing of the extension section 48 can make the material (concrete) conveying position more accurate; the outer cover of the extension section 48 is provided with a discharge cover 49 for limiting the falling concrete.

[0032] like Figure 5 As shown, the transmission surface of the first conveyor belt frame 41 and the transmission surface of the second conveyor belt frame 42 are both provided with a pressing roller 5 for pressing the conveyor belt. The pressing roller 5 is located at the connection between the first conveying section 401 and the second conveying section 402 and at the connection between the second conveying section 402 and the second conveyor belt frame 42, and is used to press the conveyor belt to ensure that the conveyor belt does not become loose. A plurality of connecting columns 6 are provided on both sides of the first conveyor belt frame 41, and the connecting columns 6 are mainly used to connect the first conveyor belt frame 41 to the bottom of the concrete mixer truck.

[0033] like Figure 1 As shown, one end of the vehicle body 1 is provided with a push rod 7 for connecting to the slip film paver. The vehicle body 1 in the present invention is pushed by the slip film paver, and the discharge of the second conveyor belt frame 42 is to the slip film paver. Therefore, the vehicle body 1 is connected to the slip film paver through two push rods 7.

[0034] The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A concrete mixer, characterized in that: It comprises a vehicle body (1), a lifting device (2), a stirring device (3) and a conveying device (4), The lifting device (2) is located on the top of the vehicle body (1), and comprises a lifting frame and a traction member slidably connected to the lifting frame. A supporting mechanism is provided between the lifting frame and the vehicle body (1), and the supporting mechanism is used to drive the lifting frame to move so that the lifting frame is away from the top of the vehicle body (1) and is in a propped-up state, or so that the lifting frame is close to the top of the vehicle body (1) and is in a folded state; The stirring device (3) comprises at least one stirring pot, the stirring pot is located in the vehicle body (1) below the lifting frame, and a discharge port is provided at the bottom of the stirring pot, and the discharge port passes through the bottom of the vehicle body (1); The conveying device (4) comprises a first conveying belt frame (41) and a second conveying belt frame (42), wherein the first conveying belt frame (41) is located below the discharge port, and the second conveying belt frame (42) is located outside the vehicle body (1), the first conveying belt frame (41) and the second conveying belt frame (42) are rotatably connected, and the first conveying belt frame (41) is provided with a first driving member (43), and the first driving member (43) is used to drive the second conveying belt frame (42) to move, so that the second conveying belt frame (42) is folded or stretched relative to the first conveying belt frame (41).

2. A concrete mixer according to claim 1, characterized in that: The supporting mechanism comprises a supporting arm (23), a first oblique rod (24) and a first power member (25); one end of the supporting arm (23) is rotatably connected to the main frame (21), and the other end is rotatably connected to the vehicle body (1); one end of the first oblique rod (24) is rotatably connected to the supporting arm (23), and the other end is movably connected to the vehicle body (1); the first power member (25) is used to drive one end of the first oblique rod (24) connected to the vehicle body (1) to move, so that the supporting arm (23) is rotated to stand up or rotated to fold onto the vehicle body (1).

3. A concrete mixer according to claim 2, characterized in that: The supporting mechanism further comprises a second power member (26), the second power member (26) being located at one end of the vehicle body (1) away from the first driving member (43), and when the main frame (21) is in a folded state, the driving end of the second power member (26) is abutted against the lower surface of the main frame (21).

4. A concrete mixer according to claim 3, characterized in that: The sliding direction of the traction member is defined as a first direction, the length of the main frame (21) in the first direction is greater than the length of the vehicle body (1) in the first direction, and a second oblique rod (27) is provided between the main frame (21) and the vehicle body (1), one end of the second oblique rod (27) is movably connected to the vehicle body (1), and the other end is rotatably connected to an end of the main frame (21) that extends outside the vehicle body (1).

5. A concrete mixer according to claim 4, characterized in that: The vehicle body (1) is also provided with a slide frame (28), and one end of the second oblique rod (27) is slidably connected in the slide frame (28).

6. A concrete mixer according to claim 1 or 5, characterized in that: The first conveyor belt frame (41) comprises a first conveyor section (401) and a second conveyor section (402); one end of the second conveyor section (402) is rotatably connected to the second conveyor belt frame (42), and the other end is rotatably connected to the first conveyor belt section; both sides of the second conveyor section (402) are rotatably connected to second driving members (45); one end of the second driving member (45) is rotatably connected to the second conveyor section (402), and the other end is rotatably connected to the vehicle body (1); the second driving member (45) drives the second conveyor section (402) to move, so that the second conveyor section (402) is parallel to or inclined with respect to the first conveyor section (401).

7. A concrete mixer according to claim 6, characterized in that: One end of the first driving member (43) is rotatably connected to one side of the first conveyor belt frame (41), and the other end is rotatably connected to one side of the second conveyor belt frame (42), and the driving direction of the first driving member (43) and the transmission direction of the second conveyor belt frame have an angle.

8. A concrete mixer according to claim 7, characterized in that: The two sides of the second conveyor belt frame (42) are rotatably connected with hanging rods (44) for connecting to the vehicle body (1), and the two sides of the second conveyor belt frame (42) are also provided with fasteners (47). When the hanging rods (44) are parallel to the transmission direction of the second conveyor belt frame (42), the hanging rods (44) are snapped into the fasteners (47).

9. A concrete mixer according to claim 6, characterized in that: A pressure roller (5) is provided on the conveyor belt surface at the connection between the first conveyor section (401) and the second conveyor section (402) and on the conveyor belt surface at the connection between the second conveyor section (402) and the second conveyor belt frame.

10. A concrete mixer according to claim 1, characterized in that: One end of the vehicle body (1) is provided with a push rod (7) for connecting to a sliding film paving machine.

Images