Premixed concrete conveying device

Abstract

The utility model relates to the technical field of conveying hoppers, and discloses a premixed concrete conveying device which comprises a funnel, a cylinder, a first supporting plate, a rotating shaft, a first gear, a second gear, a driving part, a second supporting plate, a scraping plate and an elastic part. In the using process, the rotating shaft can rotate under the driving of external force. And then, under the tooth meshing action of the first gear and the second gear, the first supporting plate can drive the cylinder to rotate. And then the second supporting plate is driven to rotate, and finally the scraping plate is driven to rotate around the axis of the funnel, so that the scraping plate cleans the inner wall of the funnel. The mode of driving the scraper to move instead of the funnel to move is adopted, and the scraper is lighter than the funnel, so that the driving force is reduced. And moreover, under the elastic action of the elastic piece, the scraping plate can be always attached to the inner wall of the funnel, so that the cleaning effect is prevented from being influenced by gap increase caused by long-time abrasion.

Description

Technical Field

[0001] The present application relates to the technical field of conveying hoppers, for example, to a ready-mixed concrete conveying device. Background Art

[0002] The related technology (Announcement No.: CN219583194U) discloses a conveying hopper device for ready-mixed concrete, including a hopper device body, a support frame, a connecting support assembly, a fixed plate, a limit block, a transmission ball, an engagement ring, a connecting block, a cleaning plate, a connecting transmission assembly, a movable plate, a connecting plate, a fixed box, a motor, a reducer, a gear, teeth, a control box, a time relay, a connecting groove, a protective box, a connecting ring, a limit ring, a fixed ring, a movable block and a limit groove.

[0003] In the process of implementing the above embodiments, it is found that there are at least the following problems in the related art:

[0004] The conveying hopper device of the ready-mixed concrete starts the motor to work, and the gear can be driven to rotate through the reducer. Then, through the meshing action between the teeth, the hopper device body can be driven to rotate, so that the cleaning plate can automatically clean the inside. However, due to the large weight of the funnel, a large driving force is required to drive the hopper device body to rotate. In addition, during the cleaning process, the position of the cleaning plate remains fixed. Therefore, as the cleaning plate is worn and damaged, the gap between the hopper device body and the hopper device body will gradually increase, thereby affecting the cleaning effect.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0007] The embodiments of the present disclosure provide a ready-mixed concrete conveying device to solve the problems raised in the above-mentioned background technology.

[0008] In some embodiments, the ready-mixed concrete conveying device comprises: a hopper; a cylinder rotatably mounted on the outer wall of the hopper, the axis of the cylinder coincides with the axis of the hopper; a first support plate mounted on the outer wall of the cylinder; a rotating shaft rotatably mounted on the first support plate along the axial direction of the cylinder; a first gear mounted on one end of the rotating shaft; a second gear mounted on the outer wall of the hopper and meshing with the first gear; a driving member mounted between the other end of the rotating shaft and the first support plate, configured to drive the rotating shaft to rotate relative to the first support plate; a second support plate mounted on the outer wall of the cylinder, the second support plate and the first support plate being located on both sides of the cylinder along the radial direction of the cylinder; a scraper located inside the hopper, the shape of the scraper matching the shape of the hopper; an elastic member located outside the hopper, mounted between the scraper and the second support plate, and used to provide elastic force; wherein, under the elastic force of the elastic member, the scraper fits the inner wall of the hopper.

[0009] Optionally, the driving member includes: a motor base mounted on the first support plate; a driving motor mounted on the motor base; and a coupling mounted between the rotating end of the motor and the other end of the rotating shaft.

[0010] Optionally, the elastic member includes: an optical axis, which is slidably arranged on the second support plate along the radial direction of the funnel, and is located on both sides of the second support plate along the axial direction of the funnel; a first strip plate, connected to one end of the optical axis on both sides close to the funnel; a connecting rod, installed between the first strip plate and the scraper; a second strip plate, connected to one end of the optical axis on both sides away from the funnel; springs, respectively mounted on the optical axes on both sides, and both located between the second strip plate and the second support plate; wherein, under the elastic force of the springs on both sides, the scraper fits with the inside of the funnel.

[0011] Optionally, the elastic member further includes: linear bearings, which are respectively mounted on the optical axes on both sides and are both installed on the second support plate.

[0012] Optionally, it also includes: a thrust ball bearing installed between the funnel and the cylinder; an angular contact ball bearing installed between the funnel and the cylinder; wherein, along the axial direction of the cylinder, the angular contact ball bearing and the thrust ball bearing are located on both sides of the cylinder.

[0013] Optionally, it also includes: sealing covers, which are respectively installed at both ends of the cylinder, and the sealing covers at both ends are respectively against the angular contact ball bearing and the thrust ball bearing; wherein the cylinder includes an annular protrusion located on the inner wall, and the angular contact ball bearing and the thrust ball bearing are both against the annular protrusion.

[0014] Optionally, it further includes: a fixing ring, which is installed on the outer wall of the funnel and abuts against the angular contact ball bearing; wherein the funnel includes a shoulder located on its outer wall, and the thrust ball bearing abuts against the shoulder.

[0015] Optionally, it also includes: a bearing adjustment ring, which is sleeved on the outer wall of the cylinder and located between the angular contact ball bearing and the thrust ball bearing.

[0016] Optionally, it also includes: a seat bearing, which is sleeved on the rotating shaft and installed on the first supporting plate.

[0017] The ready-mixed concrete conveying device provided in the embodiments of the present disclosure can achieve the following technical effects:

[0018] A ready-mixed concrete conveying device provided by an embodiment of the present disclosure includes a hopper, a cylinder, a first support plate, a rotating shaft, a first gear, a second gear, a driving member, a second support plate, a scraper and an elastic member. The axis of the cylinder coincides with the axis of the hopper, and the two are coaxially arranged. The cylinder is rotatably mounted on the outer wall of the hopper and can rotate relative to the hopper. The first support plate is mounted on the outer wall of the cylinder and is used to support and mount a rotatable rotating shaft. The rotating shaft is rotatably mounted on the first support plate along the axial direction of the cylinder and can rotate relative to the first support plate. The first gear is mounted on one end of the rotating shaft and rotates under the drive of the rotating shaft. The second gear is mounted on the outer wall of the hopper and is used to drive the funnel to rotate. The second gear meshes with the first gear and the two transmit driving force together. The driving member is mounted between the other end of the rotating shaft and the first support plate and is used to provide driving force to drive the rotating shaft to rotate relative to the first support plate. The second support plate is mounted on the outer wall of the cylinder and rotates under the drive of the cylinder. Along the radial direction of the cylinder, the second support plate and the first support plate are located on both sides of the cylinder, and are used for balancing the cylinder when it rotates. The scraper is located inside the funnel, and the shape of the scraper matches the shape of the funnel so that the inner wall of the funnel can be cleaned. The elastic member is located outside the funnel, installed between the scraper and the second support plate, and is used to provide elastic force. So that under the elastic force of the elastic member, the scraper fits the inner wall of the funnel.

[0019] During use, the shaft can rotate under the drive of external force. Then, under the meshing action between the teeth of the first gear and the second gear, the first support plate can drive the cylinder to rotate. Then, the second support plate is driven to rotate, and finally the scraper is driven to rotate around the axis of the funnel, so that the scraper cleans the inner wall of the funnel. The method of driving the scraper to move instead of the funnel is adopted. Since the scraper is lighter than the funnel, the driving force is reduced. In addition, under the elastic force of the elastic member, the scraper will always fit with the inner wall of the funnel to avoid the increase of the gap due to long-term wear and tear and the impact on the cleaning effect.

[0020] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] One or more embodiments are exemplarily described by corresponding drawings, and these exemplary descriptions and drawings do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are considered similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0022] Figure 1 is a schematic cross-sectional structural diagram of a ready-mixed concrete conveying device provided in an embodiment of the present disclosure;

[0023] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 3 is a schematic diagram of the main structure of a ready-mixed concrete conveying device provided by an embodiment of the present disclosure;

[0025] Figure 4 It is a side structural schematic diagram of a ready-mixed concrete conveying device provided in an embodiment of the present disclosure.

[0026] Reference numerals:

[0027] 10: funnel; 20: cylinder; 30: first support plate; 40: rotating shaft; 50: first gear; 60: second gear; 70: driving member; 71: motor seat; 72: driving motor; 73: coupling; 80: second support plate; 90: scraper; 100: elastic member; 101: optical axis; 102: first strip plate; 103: second strip plate; 104: spring; 105: linear bearing; 110: thrust ball bearing; 120: angular contact ball bearing; 130: sealing cover; 140: fixing ring; 150: adjusting ring for bearing; 160: seated bearing. DETAILED DESCRIPTION

[0028] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0029] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0030] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0031] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0032] Unless otherwise stated, the term "plurality" means two or more.

[0033] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0034] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0036] Combination Figures 1 to 4 As shown, the embodiment of the present disclosure provides a ready-mixed concrete conveying device, including a hopper 10, a cylinder 20, a first support plate 30, a rotating shaft 40, a first gear 50, a second gear 60, a driving member 70, a second support plate 80, a scraper 90 and an elastic member 100. The axis of the cylinder 20 coincides with the axis of the hopper 10, and the two are arranged coaxially. The cylinder 20 is rotatably mounted on the outer wall of the hopper 10 and can rotate relative to the hopper 10. The first support plate 30 is mounted on the outer wall of the cylinder 20, and is used to support and install the rotatable rotating shaft 40. The rotating shaft 40 is rotatably mounted on the first support plate 30 along the axial direction of the cylinder 20, and can rotate relative to the first support plate 30. The first gear 50 is mounted on one end of the rotating shaft 40, and rotates under the drive of the rotating shaft 40. The second gear 60 is mounted on the outer wall of the hopper 10, and is used to drive the hopper 10 to rotate. The second gear 60 meshes with the first gear 50, and the two transmit the driving force together. The driving member 70 is installed between the other end of the rotating shaft 40 and the first supporting plate 30, and is used to provide driving force to drive the rotating shaft 40 to rotate relative to the first supporting plate 30. The second supporting plate 80 is installed on the outer wall of the cylinder 20, and rotates under the drive of the cylinder 20. Along the radial direction of the cylinder 20, the second supporting plate 80 and the first supporting plate 30 are located on both sides of the cylinder 20, which are used for the balance of the cylinder 20 when rotating. The scraper 90 is located inside the funnel 10, and the shape of the scraper 90 matches the shape of the funnel 10 so that the inner wall of the funnel 10 can be cleaned. The elastic member 100 is located outside the funnel 10, and is installed between the scraper 90 and the second supporting plate 80, and is used to provide elastic force. So that under the elastic force of the elastic member 100, the scraper 90 fits the inner wall of the funnel 10.

[0037] The embodiment of the present disclosure provides a ready-mixed concrete conveying device, in which the rotating shaft 40 can rotate under the drive of an external force. Then, under the meshing action between the teeth of the first gear 50 and the second gear 60, the first support plate 30 can drive the cylinder 20 to rotate. Then, the second support plate 80 is driven to rotate, and finally the scraper 90 is driven to rotate around the axis of the funnel 10, so that the scraper 90 cleans the inner wall of the funnel 10. The method of driving the scraper 90 to move instead of the funnel 10 is adopted. Since the scraper 90 is lighter than the funnel 10, the driving force is reduced. In addition, under the elastic force of the elastic member 100, the scraper 90 will always fit with the inner wall of the funnel 10 to avoid the increase of the gap due to long-term wear and tear and the impact on the cleaning effect.

[0038] Optionally, combined Figure 4 As shown, the driving member 70 includes a motor base 71, a driving motor 72 and a coupling 73. The motor base 71 is mounted on the first support plate 30, and is used to support and mount the driving motor 72. The driving motor 72 is mounted on the motor base 71, and is used to provide driving force. The coupling 73 is installed between the rotating end of the motor and the other end of the rotating shaft 40, and is used to transmit the driving force.

[0039] In the disclosed embodiment, the driving motor 72 is controlled to work, and the rotating shaft 40 can be driven to rotate through the coupling 73. Finally, the scraper 90 is driven to rotate around the axis of the funnel 10, so that the scraper 90 automatically cleans the inner wall of the funnel 10, saving manpower.

[0040] Optionally, combined Figures 1 to 3 As shown, the elastic member 100 includes an optical axis 101, a first strip plate 102, a connecting rod, a second strip plate 103 and a spring 104. The optical axis 101 is slidably arranged in the second support plate 80 along the radial direction of the funnel 10, and can make linear motion relative to the second support plate 80. Along the axial direction of the funnel 10, the optical axis 101 is located on both sides of the second support plate 80, and the optical axes 101 on both sides are used to play a guiding and supporting role. The first strip plate 102 is connected to one end of the optical axes 101 on both sides close to the funnel 10, and moves under the drive of the optical axes 101 on both sides. The connecting rod is installed between the first strip plate 102 and the scraper 90, and is used for the first strip plate 102 to move synchronously with the scraper 90. The second strip plate 103 is connected to one end of the optical axes 101 on both sides away from the funnel 10, and is used to play a limiting role. The springs 104 are respectively mounted on the optical axes 101 on both sides and are located between the second strip plate 103 and the second support plate 80 , and are used to provide elastic force. Under the elastic force of the springs 104 on both sides, the scraper 90 fits the inside of the funnel 10 .

[0041] In the disclosed embodiment, under the elastic force of the springs 104 on both sides, the second strip plate 103 can drive the optical axes 101 on both sides to move away from the funnel 10, or make the optical axes 101 on both sides have a tendency to move away from the funnel 10. Then drive the first strip plates 102 on both sides to move away from the funnel 10, or make the first strip plates 102 have a tendency to move away from the funnel 10. Then, driven by the connecting rod, the scraper 90 can always keep in contact with the inner wall of the funnel 10, thereby ensuring the cleaning effect.

[0042] Optionally, combined Figures 1 to 3 As shown, the elastic member 100 further includes a linear bearing 105 . The linear bearings 105 are respectively mounted on the optical axes 101 on both sides and are both mounted on the second support plate 80 .

[0043] In the disclosed embodiment, the elastic member 100 further includes linear bearings 105 respectively mounted on the optical axes 101 on both sides and mounted on the second support plate 80. The linear bearings 105 on both sides are respectively used to reduce the friction between the optical axes 101 on both sides and the second support plate 80, and to improve the precision of the optical axes 101 on both sides when they move relative to the second support plate 80.

[0044] Optionally, combined Figure 1 and Figure 2 As shown, it also includes a thrust ball bearing 110 and an angular contact ball bearing 120. The thrust ball bearing 110 is installed between the funnel 10 and the cylinder 20. The angular contact ball bearing 120 is installed between the funnel 10 and the cylinder 20. Among them, along the axial direction of the cylinder 20, the angular contact ball bearing 120 and the thrust ball bearing 110 are located on both sides of the cylinder 20.

[0045] In the disclosed embodiment, a thrust ball bearing 110 and an angular contact ball bearing 120 are also included, which are installed between the funnel 10 and the cylinder 20. The thrust ball bearing 110 is used to bear the axial force on the cylinder 20, and the angular contact ball bearing 120 is used to bear the axial force and radial force on the cylinder 20. Together, the friction between the cylinder 20 and the funnel 10 is reduced, and the accuracy of the cylinder 20 rotating relative to the funnel 10 is improved.

[0046] Optionally, combined Figure 1 and Figure 2 As shown, it also includes a sealing cover 130. The sealing covers 130 are respectively installed at both ends of the cylinder 20, and the sealing covers 130 at both ends are respectively against the angular contact ball bearing 120 and the thrust ball bearing 110. Among them, the cylinder 20 includes an annular protrusion located on the inner wall, and the angular contact ball bearing 120 and the thrust ball bearing 110 are both against the annular protrusion.

[0047] In the disclosed embodiment, sealing caps 130 are also included which are respectively installed at both ends of the cylinder 20. The opposite sides of the angular contact ball bearing 120 and the thrust ball bearing 110 are respectively against the annular protrusion of the cylinder 20, and the opposite sides of the angular contact ball bearing 120 and the thrust ball bearing 110 are respectively against the sealing caps 130 at both ends. The cylinder 20 is axially fixed, thereby determining the relative positions of the cylinder 20 and the angular contact ball bearing 120 and the thrust ball bearing 110.

[0048] Optionally, combined Figure 1 and Figure 2 As shown, it also includes a fixing ring 140. The fixing ring 140 is installed on the outer wall of the funnel 10 and abuts against the angular contact ball bearing 120. The funnel 10 includes a shoulder located on its outer wall, and the thrust ball bearing 110 abuts against the shoulder.

[0049] In the disclosed embodiment, a fixing ring 140 is further included which is mounted on the outer wall of the funnel 10. The fixing ring 140 abuts against the angular contact ball bearing 120, and the shaft shoulder of the funnel 10 abuts against the thrust ball bearing 110. The angular contact ball bearing 120 and the thrust ball bearing 110 are axially fixed, thereby determining the relative positions of the funnel 10, the angular contact ball bearing 120 and the thrust ball bearing 110.

[0050] Optionally, combined Figure 1 and Figure 2 As shown, the bearing adjustment ring 150 is also included. The bearing adjustment ring 150 is sleeved on the outer wall of the cylinder 20 and is located between the angular contact ball bearing 120 and the thrust ball bearing 110.

[0051] In the disclosed embodiment, a bearing adjustment ring 150 is also included, which is sleeved on the outer wall of the cylinder 20 and is located between the angular contact ball bearing 120 and the thrust ball bearing 110. The bearing adjustment ring 150 is used to adjust the distance between the angular contact ball bearing 120 and the thrust ball bearing 110 for easy assembly.

[0052] Optionally, combined Figure 4 As shown, a seat bearing 160 is also included. The seat bearing 160 is sleeved on the rotating shaft 40 and installed on the first supporting plate 30.

[0053] In the disclosed embodiment, a bearing block 160 is further included which is mounted on the rotating shaft 40 and installed on the first support plate 30. The bearing block 160 is used to reduce the friction between the rotating shaft 40 and the first support plate 30 and improve the precision of the rotating shaft 40 when rotating relative to the first support plate 30.

[0054] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A ready-mixed concrete conveying device, characterized in that: include: funnel; A cylinder is rotatably mounted on the outer wall of the funnel, and the axis of the cylinder coincides with the axis of the funnel; A first support plate, mounted on the outer wall of the cylinder; A rotating shaft, rotatably mounted on the first supporting plate along the axial direction of the cylinder; A first gear, mounted on one end of the rotating shaft; a second gear mounted on the outer wall of the funnel and meshing with the first gear; a driving member, installed between the other end of the rotating shaft and the first supporting plate, and configured to drive the rotating shaft to perform rotational motion relative to the first supporting plate; A second support plate is mounted on the outer wall of the cylinder, and along the radial direction of the cylinder, the second support plate and the first support plate are located on both sides of the cylinder; A scraper, located inside the funnel, the shape of the scraper matching the shape of the funnel; An elastic member, located outside the funnel, installed between the scraper and the second support plate, and used for providing elastic force; Wherein, under the elastic force of the elastic member, the scraper is in contact with the inner wall of the funnel.

2. A ready-mixed concrete conveying device according to claim 1, characterized in that: The driving member comprises: A motor seat, mounted on the first supporting plate; A driving motor is mounted on the motor seat; A coupling is installed between the rotating end of the motor and the other end of the rotating shaft.

3. A ready-mixed concrete conveying device according to claim 1, characterized in that: The elastic member comprises: An optical axis is slidably disposed on the second support plate along the radial direction of the funnel, and is located on both sides of the second support plate along the axial direction of the funnel; A first strip plate connected to one end of the optical axis on both sides close to the funnel; A connecting rod installed between the first strip plate and the scraper; A second strip plate connected to one end of the optical axis on both sides away from the funnel; Springs, respectively mounted on the optical axes at both sides and located between the second strip plate and the second support plate; Wherein, under the elastic force of the springs on both sides, the scraper is fitted with the inside of the funnel.

4. A ready-mixed concrete conveying device according to claim 3, characterized in that: The elastic member further comprises: The linear bearings are respectively mounted on the optical axes at both sides and are installed on the second supporting plate.

5. A ready-mixed concrete conveying device according to any one of claims 1 to 4, characterized in that: Also includes: A thrust ball bearing is installed between the funnel and the cylinder; An angular contact ball bearing is installed between the funnel and the cylinder; Wherein, along the axial direction of the cylinder, the angular contact ball bearing and the thrust ball bearing are located on both sides of the cylinder.

6. A ready-mixed concrete conveying device according to claim 5, characterized in that: Also includes: Sealing covers are respectively installed at both ends of the cylinder, and the sealing covers at both ends are respectively against the angular contact ball bearing and the thrust ball bearing; Wherein, the cylinder comprises an annular protrusion located on the inner wall, and the angular contact ball bearing and the thrust ball bearing both abut against the annular protrusion.

7. A ready-mixed concrete conveying device according to claim 5, characterized in that: Also includes: A fixing ring, mounted on the outer wall of the funnel and abutting against the angular contact ball bearing; Wherein, the funnel includes a shoulder located on its outer wall, and the thrust ball bearing abuts against the shoulder.

8. A ready-mixed concrete conveying device according to claim 5, characterized in that: Also includes: The bearing adjustment ring is sleeved on the outer wall of the cylinder and is located between the angular contact ball bearing and the thrust ball bearing.

9. A ready-mixed concrete conveying device according to any one of claims 1 to 4, characterized in that: Also includes: The seat bearing is sleeved on the rotating shaft and installed on the first supporting plate.

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