Concrete mixing truck and its material blocking mechanism

Abstract

The utility model belongs to the engineering vehicle technical field, concretely relates to a concrete mixing truck and material blocking mechanism thereof, and the concrete mixing truck includes the discharge chute for the concrete discharge, and the material blocking mechanism includes: two mounting plates are connected with the two outer side walls of the tail of discharge chute respectively, and mounting hole is set up on two mounting plates; The rotary lever is rotatablely connected with two mounting plates by penetrating two mounting plates; The rotary handle is connected with one end of the rotary lever and is used for driving the rotary lever to rotate; The baffle assembly is located in the discharge chute and is connected with the outer circumferential wall of the rotary lever, and the rotation of the rotary lever is used for closing or opening the discharge chute. The material blocking mechanism can prevent the concrete from splashing to the ground and causing environmental pollution.

Description

Technical Field

[0001] This utility model belongs to the field of engineering vehicle technology, specifically relating to a concrete mixer truck and its material blocking mechanism. Background Technology

[0002] During the transportation of concrete, due to bumpy road conditions, concrete may leak from the mixing drum and slide down the discharge hopper and trough to the ground, causing environmental pollution.

[0003] To address the aforementioned issues, the existing solution is to install a receiving hopper on the subframe to collect splashed material. However, due to the height difference between the receiving hopper and the discharge trough of the mixer truck, some material will still splash outside the receiving hopper, causing environmental pollution. Furthermore, the installation of the receiving hopper increases the overall weight and structural complexity of the vehicle, making maintenance and cleaning inconvenient. Utility Model Content

[0004] The purpose of this utility model is to provide a concrete mixer truck and its material blocking mechanism to solve the technical problem that concrete from concrete mixer trucks is easily splashed onto the ground and is difficult to collect.

[0005] To achieve the above objectives, this utility model provides a material-blocking mechanism. The concrete mixer truck includes a discharge trough for discharging concrete, and the material-blocking mechanism includes: Two mounting plates are respectively connected to the two outer side walls at the tail of the discharge trough, and mounting holes are provided on both mounting plates. The rotating rod passes through two mounting holes and is rotatably connected to both mounting plates. The handle is connected to one end of the rotating rod and is used to drive the rotating rod to rotate. The baffle assembly is located inside the discharge trough and connected to the outer peripheral wall of the rotating rod. The rotation of the rotating rod is used to close or open the discharge trough.

[0006] In some embodiments, the rotating rod is pivotally connected to the rotating handle, and the mounting plate near the rotating handle includes a main body and at least one limiting part disposed on the periphery of the main body. The limiting part extends toward the rotating handle and is used to engage with the rotating handle.

[0007] In some embodiments, there are two limiting parts, namely a first limiting part and a second limiting part. The first limiting part is connected to the bottom end of the main body, and the second limiting part is connected to the side end of the main body. When the rotating handle is in contact with the first limiting part, the baffle assembly is separated from the inner peripheral wall of the discharge trough. When the rotating handle is in contact with the second limiting part, the baffle assembly is in contact with the inner peripheral wall of the discharge trough.

[0008] In some embodiments, a limiting member is provided on the rotating handle. A first limiting part has a first limiting groove, and a second limiting part has a plurality of spaced second limiting grooves. The inner peripheral walls of the first limiting groove and the plurality of second limiting grooves can be engaged with the limiting member to limit the rotating handle to different angles.

[0009] In some embodiments, the main body of the mounting plate near the rotating handle is circular, and the main body is provided with a plurality of third limiting parts along the circumference. A third limiting groove for engaging with the rotating handle is formed between any two adjacent third limiting parts, so as to limit the rotating handle to different angles.

[0010] In some embodiments, the stop mechanism further includes an elastic element elastically connected to the middle of the rotating rod and the rotating handle to apply an elastic force toward the limiting portion to the rotating handle.

[0011] In some embodiments, the rotating handle includes: a handle portion, which is a columnar structure; a connecting sleeve, which is sleeved on one end of the handle portion and rotatably connected to the rotating rod; an elastic element is disposed inside the connecting sleeve, one end of the elastic element is connected to the rotating rod, and the other end of the elastic element is connected to the handle portion.

[0012] In some embodiments, the baffle assembly includes: a baffle made of rigid material, the shape of which is adapted to the cross-section of the space inside the discharge trough, the baffle including a first end face and a second end face, the first end face extending axially along the rotating rod and fixedly connected to the rotating rod, and the shape of the second end face being adapted to the inner peripheral wall of the discharge trough; and a flexible sealing strip detachably sleeved on the second end face, the flexible sealing strip sealingly filling the space between the second end face and the inner peripheral wall of the discharge trough.

[0013] In some embodiments, the cross-section of the space inside the discharge trough is semi-circular, the baffle is semi-circular, the first end face is flat, and the second end face is curved.

[0014] The second aspect of this utility model provides a concrete mixer truck, including the aforementioned material blocking mechanism.

[0015] The above technical solution provides a material-blocking mechanism, which includes two mounting plates, a rotating rod, a rotating handle, and a baffle assembly. The two mounting plates are respectively connected to the two outer side walls at the tail end of the discharge trough. Each mounting plate has mounting holes. The rotating rod passes through the two mounting holes and is rotatably connected to both mounting plates. The rotating handle is connected to one end of the rotating rod and is used to drive the rotating rod to rotate. The baffle assembly is located inside the discharge trough and connected to the rotating rod. The rotation of the rotating rod can cause the baffle assembly to close or open the discharge trough. This structure allows the baffle assembly to flexibly close or open the discharge trough, effectively preventing concrete from splashing out of the trough during transportation due to bumps, thus preventing environmental pollution. When unloading is required, simply rotating the handle drives the rotating rod to rotate, causing the baffle assembly to rotate to the open position, allowing the concrete to flow smoothly out of the discharge trough. During transportation, the baffle assembly is in the closed position, tightly fitting against the inner wall of the discharge trough, ensuring that the concrete does not leak.

[0016] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram of the material-stopping mechanism provided according to an embodiment of the present utility model; Figure 2 This is a front view schematic diagram of the material blocking mechanism provided according to an embodiment of the present utility model; Figure 3 This is a side view of the material-stopping mechanism provided according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the application scenario of the material blocking mechanism provided according to the embodiment of the present utility model in the first state; Figure 5 This is a schematic diagram of the application scenario of the material blocking mechanism provided according to the embodiment of the present utility model in the second state; Figure 6 This is a schematic diagram of the mounting plate provided according to the first embodiment of the present invention; Figure 7 This is a schematic diagram illustrating the application scenario of the material-stopping mechanism provided according to the embodiments of this utility model in the third state; Figure 8This is a schematic diagram of the mounting plate provided according to the second embodiment of the present utility model; Figure 9 This is a schematic diagram of the rotating handle provided according to an embodiment of the present utility model.

[0018] Explanation of reference numerals in the attached figures 10 Mounting Plate 11 mounting holes 12. Motherboard body 13 First limiting part 14 Second limiting part 15 Third Limiting Section 16 First limiting groove 17 Second limiting groove 18 Third limiting groove 19 Connecting holes 20 Rotating rod 30. Turn the handle 31 handle part 32 Connecting sleeve 33 Limiting components 40 baffle assembly 41 baffle 411 First end face 412 Second end face 42 Flexible sealing strip 43 Pressure Plate 50 elastic elements 60 Rotating connector 100 Discharge trough Detailed Implementation The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0019] The following description, with reference to the accompanying drawings, describes a concrete mixer truck and its material-blocking mechanism according to the present invention. Figure 1 The diagram shown is a structural schematic of the material-stopping mechanism provided according to an embodiment of the present utility model; as shown Figure 2 The image shown is a front view schematic diagram of the material-blocking mechanism provided according to an embodiment of the present utility model; as shown... Figure 3 The image shown is a side view of the material-stopping mechanism provided according to an embodiment of the present invention; as shown... Figure 4 The diagram shown is a schematic representation of the application scenario of the material-stopping mechanism provided according to an embodiment of the present invention in a first state; as shown... Figure 5 The diagram shown illustrates an application scenario of the material-blocking mechanism provided in the second state according to an embodiment of the present invention. The material-blocking mechanism provided in this embodiment of the present invention includes: Two mounting plates 10 are respectively connected to the two outer side walls at the tail of the discharge trough 100, and each mounting plate 10 has a mounting hole 11. The rotating rod 20 passes through two mounting holes 11 and is rotatably connected to both mounting plates 10; Rotate handle 30, which is connected to one end of rotating rod 20 and is used to drive rotating rod 20 to rotate; The baffle assembly 40 is located inside the discharge trough 100 and connected to the rotating rod 20. The rotation of the rotating rod 20 is used to drive the baffle assembly 40 to close or open the discharge trough 100.

[0020] In the prior art, in order to prevent concrete from splashing onto the ground, corresponding collection components are usually set up. However, the collection components in the prior art often have a height difference with the discharge trough 100, which causes some material to still splash outside the collection components, thus failing to completely solve the problem of concrete splashing.

[0021] The material-blocking mechanism provided in this embodiment includes two mounting plates 10, a rotating rod 20, a rotating handle 30, and a baffle assembly 40. The two mounting plates 10 are detachably connected to the two outer side walls at the tail of the discharge trough 100. Mounting holes 11 are provided on both mounting plates 10, providing a stable mounting base for the rotating rod 20. The rotating rod 20 passes through and is rotatably connected to both mounting plates 10, allowing it to rotate flexibly within the mounting holes 11. The rotating handle 30 is connected to one end of the rotating rod 20, allowing the operator to easily rotate the rod 20. The baffle assembly 40 is located inside the discharge trough 100 and connected to the rotating rod 20. Rotation of the rotating rod 20 can cause the baffle assembly 40 to close or open the discharge trough 100. When the baffle assembly 40 is in the closed position, it fits tightly against the inner circumferential wall of the discharge trough 100, effectively preventing concrete from splashing out of the trough during transportation due to bumps, thus avoiding environmental pollution. When unloading is required, simply rotate the handle 30 to rotate the rotating rod 20, thereby rotating the baffle assembly 40 to the open position, allowing the concrete to flow smoothly out of the discharge trough 100. The operation is simple and quick. In a specific embodiment, the two mounting plates 10 are respectively bolted to the two outer side walls at the tail of the discharge trough 100.

[0022] In one embodiment, the material-stopping mechanism further includes a nylon sleeve (not shown in the figure), disposed between the rotating rod 20 and the mounting plate 10. The nylon sleeve effectively reduces the friction and impact between the rotating rod 20 and the mounting plate 10 during rotation, extending the service life of the equipment. Simultaneously, the nylon sleeve also has a certain degree of self-lubrication, making the rotation of the rotating rod 20 smoother and reducing resistance during operation.

[0023] In one embodiment, the rotating rod 20 is pivotally connected to the rotating handle 30. The mounting plate 10 near the rotating handle 30 includes a main body 12 and at least one limiting portion disposed around the main body 12. The limiting portions extend toward the rotating handle 30 and are used to engage with the rotating handle 30. This design allows the rotating handle 30 to engage with the limiting portion when it drives the rotating rod 20 to a specific position, thereby fixing the position of the baffle assembly 40 and preventing it from rotating accidentally due to vibration during transportation, ensuring the stability and reliability of the baffle mechanism.

[0024] In one specific embodiment, the material-stopping mechanism further includes a rotating connector 60, which sequentially connects the side wall of the rotating handle 30 and the rotating rod 20 along the radial direction of the rotating shaft to achieve a rotatable connection between the rotating handle 30 and the rotating rod 20. This design of the rotating connector 60 further enhances the connection stability between the rotating handle 30 and the rotating rod 20, ensuring that the connection will not loosen even under frequent rotational operations and the impact of concrete during long-term use. In one specific embodiment, the rotating connector 60 is a pin.

[0025] In one embodiment, such as Figure 6 The diagram shows the structure of the mounting plate 10 according to the first embodiment of this utility model. There are two limiting parts, namely a first limiting part 13 and a second limiting part 14. The first limiting part 13 is connected to the bottom end of the main body 12, and the second limiting part 14 is connected to the side end of the main body 12. When the rotating handle 30 abuts against the first limiting part 13, the baffle assembly 40 separates from the inner peripheral wall of the discharge trough 100; when the rotating handle 30 abuts against the second limiting part 14, the baffle assembly 40 fits against the inner peripheral wall of the discharge trough 100. With this design, the operator can intuitively determine the current position of the baffle assembly 40, i.e., whether the discharge trough 100 is closed or open, by observing the abutment of the rotating handle 30 against different limiting parts, greatly improving the convenience and accuracy of operation. Specifically, the main body 12 has a mounting hole 11 for the rotating rod 20 to rotate and two connecting holes 19. The two connecting holes 19 are used for bolts and other connecting parts to pass through, so as to realize the detachable connection between the main body 12 and the discharge trough 100.

[0026] In one embodiment, such as Figure 7The diagram shown illustrates the application scenario of the material-blocking mechanism provided according to an embodiment of the present invention in a third state. A limiting member 33 is provided on the rotating handle 30. A first limiting groove 16 is provided on the first limiting part 13, and multiple spaced second limiting grooves 17 are provided on the second limiting part 14. The inner peripheral walls of the first limiting groove 16 and the multiple second limiting grooves 17 can all be engaged with the limiting member 33 to limit the rotating handle 30 to different angles. By providing multiple second limiting grooves 17, the operator can limit the rotating handle 30 to different angular positions according to actual needs, thereby flexibly adjusting the degree of contact or separation distance between the baffle assembly 40 and the inner peripheral wall of the discharge trough 100 to meet the usage requirements under different working conditions. For example, during transportation, the rotating handle 30 can be limited to an angle that tightly fits the baffle assembly 40 against the inner circumferential wall of the discharge trough 100, ensuring that concrete does not leak. When a small amount of material needs to be unloaded or the distribution of concrete within the mixing drum needs to be adjusted, the rotating handle 30 can be limited to other angles, maintaining a certain separation distance between the baffle assembly 40 and the inner circumferential wall of the discharge trough 100, thus achieving partial unloading or adjustment. When dealing with concrete of different viscosities, the tightness of the fit between the baffle assembly 40 and the inner circumferential wall of the discharge trough 100 can also be changed by adjusting the limiting angle of the rotating handle 30. For example, for concrete with lower viscosity and higher fluidity, the baffle assembly 40 can be tightly fitted against the inner circumferential wall of the discharge trough 100 to prevent excessive splashing during transportation due to bumps (e.g., Figure 7 (As shown in the third state). For concrete with high viscosity and poor fluidity, the fit between the baffle assembly 40 and the discharge chute 100 can be appropriately reduced to avoid affecting its normal rotation and unloading effect due to concrete adhering to the baffle assembly 40 (e.g., Figure 5 (The second state shown).

[0027] In one embodiment, such as Figure 8The diagram shows a schematic of the mounting plate 10 according to the second embodiment of the present invention. The main body 12 of the mounting plate 10 near the rotating handle 30 is circular. Multiple third limiting portions 15 are arranged circumferentially on the main body 12. A third limiting groove 18 for engaging with the rotating handle 30 is formed between any two adjacent third limiting portions 15, thus limiting the rotating handle 30 to different angles. This circular main body 12 design, combined with multiple third limiting grooves 18, provides operators with more angle options and allows for more flexible adjustment of the baffle assembly 40's position. It can better adapt to various practical situations when facing different specifications of discharge troughs 100 or concrete transportation tasks with different requirements. Operators can accurately limit the rotating handle 30 within a suitable third limiting groove 18 based on the actual conditions of the concrete, such as viscosity, transportation distance, and road surface roughness, ensuring the baffle assembly 40 is in the optimal working position, effectively preventing concrete splashing and ensuring smooth unloading. Moreover, multiple third limiting grooves 18 are evenly distributed around the circular main body 12, making the angle adjustment more precise and uniform, further improving the applicability and practicality of the material blocking mechanism.

[0028] In one embodiment, such as Figure 2 As shown, the baffle mechanism also includes an elastic element 50, elastically connected to the middle of the rotating rod 20 and the rotating handle 30, to apply an elastic force toward the limiting part to the rotating handle 30. The elastic element 50 ensures that the rotating handle 30 automatically returns to the position where it is locked with the limiting part when no external force is applied, thus ensuring the stability and reliability of the baffle assembly 40. Specifically, when the operator rotates the rotating rod 20 by rotating the handle 30 to open or close the discharge trough 100, and then releases the handle 30, the elastic element 50 applies an elastic force toward the limiting part, causing the rotating handle 30 to automatically return to the position where it is locked with the first limiting part 13 or the second limiting part 14, thereby fixing the position of the baffle assembly 40. This structure further improves the safety and stability of the baffle mechanism. In a specific embodiment, the elastic element 50 is a tension spring.

[0029] In one embodiment, such as Figure 9The diagram shows a schematic of the rotating handle 30 according to an embodiment of the present invention. The rotating handle 30 includes a handle portion 31 and a connecting sleeve 32. The handle portion 31 has a columnar structure. The connecting sleeve 32 is fitted onto one end of the handle portion 31 and is rotatably connected to the rotating rod 20. An elastic element 50 is disposed within the connecting sleeve 32, with one end connected to the rotating rod 20 and the other end connected to the handle portion 31. The elastic element 50, disposed within the connecting sleeve 32, prevents external concrete from splashing into the spring and causing spring failure. Simultaneously, the connecting sleeve 32 provides a stable connection between the handle portion 31 and the rotating rod 20, ensuring that the rotating handle 30 does not wobble or deviate when rotating the rotating rod 20, thus improving the accuracy and stability of operation. The handle portion 31, with its columnar structure, conforms to ergonomic design, making it easy for operators to grip and apply force more effectively during rotation, reducing the operator's workload.

[0030] In one embodiment, the baffle assembly 40 includes a baffle 41 and a flexible sealing strip 42. The baffle 41 is made of a rigid material, and its surface shape is adapted to the cross-section of the space within the discharge trough 100. The baffle 41 includes a first end face 411 and a second end face 412. The first end face 411 extends axially along the rotating rod 20 and is fixedly connected to it. The shape of the second end face 412 is adapted to the inner peripheral wall of the discharge trough 100. The flexible sealing strip 42 is detachably fitted onto the second end face 412, sealing and filling the space between the second end face 412 and the inner peripheral wall of the discharge trough 100. The baffle assembly 40, composed of the baffle 41 and the flexible sealing strip 42, achieves a good sealing effect while ensuring structural strength. The rigid baffle 41 provides stable foundation support, capable of withstanding the impact force of concrete during transportation and unloading, and is not easily deformed or damaged. The flexible sealing strip 42 fills any tiny gaps that may exist between the baffle 41 and the inner wall of the discharge trough 100. Its flexible and deformable nature allows it to fit tightly between the two, effectively preventing concrete leakage. This combination of rigidity and flexibility ensures both the durability of the baffle mechanism and enhances its sealing performance. In practical applications, when the baffle assembly 40 is in the closed position, the flexible sealing strip 42 is in close contact with the inner wall of the discharge trough 100, forming a reliable sealing barrier. Even with concrete of low viscosity and high fluidity, it prevents leakage from gaps and avoids environmental pollution. Furthermore, the flexible sealing strip 42 is detachably attached to the second end face 412 of the baffle 41. This design allows for easy replacement of the flexible sealing strip 42 after long-term use if wear or aging occurs, reducing maintenance costs and difficulty. Operators only need to remove the old flexible sealing strip 42 from the second end face 412 of the baffle 41 and then put on the new flexible sealing strip 42. There is no need to replace the entire baffle assembly 40, which greatly improves maintenance efficiency.

[0031] In one embodiment, the baffle assembly 40 further includes a pressure plate 43, the shape of which is adapted to the flexible sealing strip 42. The pressure plate 43 covers the flexible sealing strip 42 and has a plurality of bolt mounting holes 11 spaced apart circumferentially. Bolts pass through the pressure plate 43, the flexible sealing strip 42, and the baffle 41 in sequence to detachably install the flexible sealing strip 42 onto the baffle 41. In a specific embodiment, the flexible sealing strip 42 may be made of rubber or fabric-reinforced rubber.

[0032] In one embodiment, such as Figure 4 As shown, the cross-section of the discharge trough 100 is semi-circular, and the baffle 41 is also semi-circular, with a first end face 411 being flat and a second end face 412 being curved. The design of the semi-circular cross-section of the trough and the semi-circular baffle 41 allows for maximum fit, reducing the shaking and splashing of concrete during transportation due to spatial mismatch. When the baffle 41 is in the closed position, its curved surface tightly fits the semi-circular inner wall of the discharge trough 100, forming a relatively enclosed space, effectively preventing concrete leakage. Furthermore, the first end face 411 is welded to the rotating rod 20, a robust and reliable connection capable of withstanding significant external forces, ensuring that the baffle 41 will not separate from the rotating rod 20 during transportation and unloading, thus guaranteeing the stability and safety of the baffle mechanism. In one specific embodiment, the first end face 411 of the baffle 41 is welded to the rotating rod 20.

[0033] In one embodiment, a concrete mixer truck is provided, including the aforementioned material blocking mechanism.

[0034] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0037] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A material-stopping mechanism, characterized in that, The material-blocking mechanism is used in a concrete mixer truck, which includes a discharge trough (100) for discharging concrete. The material-blocking mechanism includes: Two mounting plates (10) are respectively connected to the two outer side walls of the tail of the discharge trough (100), and each of the two mounting plates (10) is provided with mounting holes (11). The rotating rod (20) passes through the two mounting holes (11) and is rotatably connected to both mounting plates (10); Rotate the handle (30), which is connected to one end of the rotating rod (20) and is used to drive the rotating rod (20) to rotate; The baffle assembly (40) is located inside the discharge trough (100) and connected to the rotating rod (20). The rotation of the rotating rod (20) is used to drive the baffle assembly (40) to close or open the discharge trough (100).

2. The material blocking mechanism according to claim 1, characterized in that, The rotating rod (20) is pivotally connected to the rotating handle (30). The mounting plate (10) near the rotating handle (30) includes a main body (12) and at least one limiting part disposed on the periphery of the main body (12). The limiting parts all extend toward the rotating handle (30) and are used to limit and engage with the rotating handle (30).

3. The material blocking mechanism according to claim 2, characterized in that, The number of limiting parts is two, namely a first limiting part (13) and a second limiting part (14). The first limiting part (13) is connected to the bottom end of the main body (12), and the second limiting part (14) is connected to the side end of the main body (12). When the rotating handle (30) is in limiting contact with the first limiting part (13), the baffle assembly (40) is separated from the inner peripheral wall of the discharge trough (100). When the rotating handle (30) is in limiting contact with the second limiting part (14), the baffle assembly (40) is in contact with the inner peripheral wall of the discharge trough (100).

4. The material blocking mechanism according to claim 3, characterized in that, The rotating handle (30) is provided with a limiting member (33). The first limiting part (13) is provided with a first limiting groove (16), and the second limiting part (14) is provided with a plurality of spaced second limiting grooves (17). The inner peripheral walls of the first limiting groove (16) and the plurality of second limiting grooves (17) can be engaged with the limiting member (33) to limit the rotating handle (30) at different angles.

5. The material blocking mechanism according to claim 2, characterized in that, The main body (12) of the mounting plate (10) near the rotating handle (30) is circular. The main body (12) is provided with a plurality of third limiting parts (15) along the circumference. A third limiting groove (18) for engaging with the rotating handle (30) is formed between any two adjacent third limiting parts (15) to limit the rotating handle (30) to different angles.

6. The material blocking mechanism according to claim 2, characterized in that, The material-stopping mechanism further includes: An elastic element (50) is elastically connected to the middle of the rotating rod (20) and the rotating handle (30) to apply an elastic force toward the limiting portion to the rotating handle (30).

7. The material blocking mechanism according to claim 6, characterized in that, The rotating handle (30) includes: The handle part (31) is a columnar structure; A connecting sleeve (32) is fitted onto one end of the handle portion (31). The connecting sleeve (32) is rotatably connected to the rotating rod (20). An elastic element (50) is disposed inside the connecting sleeve (32). One end of the elastic element (50) is connected to the rotating rod (20), and the other end of the elastic element (50) is connected to the handle portion (31).

8. The material-stopping mechanism according to any one of claims 1 to 6, characterized in that, The baffle assembly (40) includes: The baffle (41) is made of rigid material. The shape of the baffle (41) is adapted to the cross-section of the space inside the discharge trough (100). The baffle (41) includes a first end face (411) and a second end face (412). The first end face (411) extends along the axial direction of the rotating rod (20) and is fixedly connected to the rotating rod (20). The shape of the second end face (412) is adapted to the inner peripheral wall of the discharge trough (100). A flexible sealing strip (42) is detachably sleeved on the second end face (412), and the flexible sealing strip (42) seals and fills the space between the second end face (412) and the inner peripheral wall of the discharge trough (100).

9. The material blocking mechanism according to claim 8, characterized in that, The cross-section of the discharge trough (100) is semi-circular, the baffle (41) is a semi-circular baffle (41), the first end face (411) is a plane, and the second end face (412) is an arc surface.

10. A concrete mixer truck, characterized in that, Includes the material blocking mechanism as described in any one of claims 1 to 9.

Images