A high-toughness concrete pumping pipeline anti-clogging and anti-wear device

Abstract

This invention discloses a high-toughness concrete pumping pipeline anti-clogging and anti-wear device. This invention relates to the field of pipeline anti-clogging technology. The anti-wear plate has a hidden plate internally connected to prevent wear on the inner wall of the pipeline. A limiting frame is connected to the front end of the anti-wear plate to confine the main body of the anti-clogging and anti-wear device to the pipeline. A control plate is connected to the side of the mounting plate near the inner wall of the main body of the anti-clogging and anti-wear device to control the tightness of the anti-clogging concentrator. The advantages of this invention are: the anti-clogging concentrator actively guides the concrete entering the main body of the anti-clogging and anti-wear device, converging it towards the middle section of the pipeline axis, improving the uniformity of concrete distribution within the pipeline cross-section. Simultaneously, the anti-clogging concentrator can rotate freely around its rotation axis, allowing the effective radius of the cross-section within the pipeline to adaptively adjust with changes in the concrete pumping power, significantly reducing the probability of blockage while ensuring normal transport.

Description

Technical Field

[0001] This invention relates to the field of pipeline anti-clogging technology, specifically to an anti-clogging and anti-wear device for high-toughness concrete pumping pipelines. Background Technology

[0002] In the field of building construction, high-toughness concrete is widely used in the construction of large-scale infrastructure such as high-rise buildings, bridge projects, and tunnel projects due to its excellent crack resistance, impact resistance, and durability. High-toughness concrete is usually made of cement, aggregates, admixtures, and fibers in a specific ratio. Its material characteristics are different from those of ordinary concrete. During pumping construction, concrete needs to be transported from the mixing equipment to the construction pouring site through a special pumping pipeline. As the core carrier for concrete transportation, the operation stability of the pumping pipeline directly affects the construction efficiency, construction quality, and construction safety. Common anti-clogging and anti-wear devices for pipelines often fail to address the issue that, after concrete enters the pipeline, there is no centralized guiding structure, leading to uneven material accumulation along the pipe wall and uneven material distribution within the pipeline cross-section. This results in localized siltation. Furthermore, the fixed conveying cross-section cannot adaptively adjust to changes in concrete pumping pressure, flow rate, and material condition. Changes in pumping power can easily cause material jamming and pipe blockage. Prolonged direct scouring and compression of the pipe wall by concrete, especially at areas with uneven material distribution, leads to severe wear and reduced service life due to rapid localized wear. To address these issues, we propose a high-toughness anti-clogging and anti-wear device for concrete pumping pipelines. Summary of the Invention

[0003] The purpose of this invention is to provide a device for preventing blockage and wear in high-toughness concrete pumping pipelines.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a high-toughness concrete pumping pipeline anti-clogging and anti-wear device, comprising an anti-clogging and anti-wear device body, two mounting plates connected to the inner wall of the anti-clogging and anti-wear device body, an anti-clogging concentrator connected between the two mounting plates for guiding concrete towards the center of the anti-clogging and anti-wear device body during transportation, an anti-wear plate for contacting the inner wall of the pipeline connected to the front end of the anti-clogging and anti-wear device body, a hidden plate for preventing wear on the inner wall of the pipeline connected inside the anti-wear plate, a limiting frame for confining the anti-clogging and anti-wear device body and the pipeline together connected to the front end of the anti-wear plate, a control plate for controlling the tightness of the anti-clogging concentrator connected to the side of the mounting plate near the inner wall of the anti-clogging and anti-wear device body, a control ring for controlling the usage state of the hidden plate connected to the outer wall of the anti-clogging and anti-wear device body, annular threaded grooves for cooperating with the pipeline on both the front and rear ends of the anti-clogging and anti-wear device body, and a hidden compartment for storing the hidden plate on the left side of the anti-wear plate.

[0005] As a further embodiment of the present invention: the outer wall of the main body of the anti-blocking and anti-wear device is provided with a movable compartment, a control frame is slidably connected inside the movable compartment, and an unfolding frame for controlling the unfolding and storage of the hidden plate is connected to the side of the movable compartment away from the control frame.

[0006] As a further embodiment of the present invention: the front end of the anti-clogging and anti-wear device body is provided with an arc-shaped groove, the rear end of the arc-shaped groove is provided with a movable compartment, and the unfolding frame extends into the interior of the movable compartment and is slidably connected to the movable compartment, and the unfolding frame is connected to the hidden plate.

[0007] As a further aspect of the present invention: the lower end of the control frame is connected to a retaining protrusion for fixing the position of the wear-resistant plate, and the outer wall of the wear-resistant plate is provided with an arc-shaped retaining groove for cooperating with the retaining protrusion.

[0008] As a further aspect of the present invention: four grooves are provided on the side of each of the two mounting plates that are close to each other, and four translation grooves are provided on the upper end of each of the two mounting plates. A linkage plate is slidably connected inside each of the eight grooves, and the linkage plate extends to the upper end of the mounting plate through the translation groove.

[0009] As a further embodiment of the present invention: the eight grooves are rotatably connected to a rotating shaft on one side close to each other, the outer walls of the four rotating shafts are rotatably connected to four anti-blocking centralized frames, the left and right sides of the four anti-blocking centralized frames are respectively connected to the inner wall of the linkage plate through a centralized spring, the upper end of the front linkage plate is connected to the lower end of the control plate, and the four linkage plates are all connected to each other through a linkage frame.

[0010] As a further aspect of the present invention: the upper ends of the two control plates are respectively rotatably connected to two rotating protrusions and a fastening post, and the outer walls of the two rotating protrusions are rotatably connected to a stage plate for fastening with the fastening post.

[0011] As a further embodiment of the present invention: a stage groove is provided on one side of each of the two stage plates that are close to each other for cooperating with the fastening post; a through groove is provided at the upper end of each of the two stage plates; a lower edge post is slidably connected inside each of the two through grooves; the two lower edge posts have different lengths; the upper ends of the two lower edge posts are connected to the lower end of the same fastening plate; and an internal compartment is provided at the rear end of the main body of the anti-blocking and anti-wear device, and the internal compartment cooperates with the limiting frame.

[0012] As a further embodiment of the present invention: the anti-blocking centralized frame is connected to two side frames on the side away from the center of the anti-blocking and anti-wear device body. A side shaft is rotatably connected between the two side frames. A base shaft is connected to the outer wall of the side shaft. A side control shaft is connected to the upper end of the base shaft. The upper end of the side control shaft passes through the anti-blocking and anti-wear device body and is spirally connected to the anti-blocking and anti-wear device body. An inner compartment is opened at the lower end of the side control shaft. The base shaft is connected to the top wall of the inner compartment through a spring. An arc-shaped groove is opened at the rear end of the outer wall of the anti-blocking and anti-wear device body. An arc-shaped block is slidably connected to the inner wall of the arc-shaped groove. A control groove for communicating with the inner compartment is opened at the rear end of the outer wall of the anti-blocking and anti-wear device body. A control shaft is rotatably connected to the side wall of the control groove. A blocking control frame is connected to the outer wall of the control shaft. The blocking control frame cooperates with the limit frame. An arc-shaped baffle for limiting the rotation state of the blocking control frame is connected to the outer wall of the arc-shaped block. An annular groove is opened on the side wall of the control groove. The inner wall of the annular groove is connected to the control shaft through a spring.

[0013] Compared with the prior art, the beneficial effects of the present invention by adopting the above technical solution are as follows: 1. This invention uses an anti-blocking central frame to actively guide the concrete entering the anti-blocking and anti-wear device body, converging it towards the middle section of the pipe axis, improving the uniformity of concrete distribution within the pipe cross-section. At the same time, the anti-blocking central frame can rotate freely around the rotation axis, allowing the effective radius of the cross-section that can pass through the pipe to adaptively adjust with changes in the concrete pumping power, significantly reducing the probability of blockage while ensuring normal delivery. 2. This invention achieves the switching between unfolded and retracted states by using a hidden plate and a control ring to drive the control frame and unfolding frame. When in use, the hidden plate unfolds and covers the inner wall of the pipe, forming an isolation and protective layer to effectively prevent concrete aggregate from grinding the pipe body. When not in use, the hidden plate can be stored inside the wear-resistant plate, which facilitates overall installation and disassembly. 3. The present invention achieves initial fixation by engaging the annular threaded grooves at both ends with the pipe threads, and simultaneously uses a limiting bracket to fasten and constrain from the other end of the pipe, forming a double axial fixation; after the fixing protrusion is embedded in the arc-shaped fixing groove, the axial component force generated by the inclined mating surface further presses the wear-resistant plate against the inner wall of the pipe, resulting in good radial fixation effect; 4. This invention uses a control panel to drive the linkage plate and linkage frame to move synchronously, which can adjust the compression of the centralized spring as a whole. After adjustment, the stage plate is initially locked by the stage groove and the fastening column. Then, the two lower edge columns of different lengths are inserted into the corresponding through grooves to achieve secondary covering and locking, forming a graded locking mechanism. It is convenient to operate, reliable to fix, and effectively prevents loosening and rebound in the adjustment state. The position and use angle of the anti-blocking centralized frame can be easily adjusted by rotating the side control shaft. With the spring limit reset, the degree of concrete concentration can be flexibly adjusted.

[0014] Other advantages, objectives and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from the practice of the invention. Attached Figure Description

[0015] Figure 1 This is an overall three-dimensional schematic diagram of an embodiment of the present invention; Figure 2 This is a three-dimensional schematic diagram of the anti-clogging and anti-wear device in an embodiment of the present invention; Figure 3 This is a three-dimensional schematic diagram of the wear-resistant plate in an embodiment of the present invention; Figure 4 This is a three-dimensional schematic diagram of the limiting frame in an embodiment of the present invention; Figure 5 This is a three-dimensional schematic diagram of the hidden plate in an embodiment of the present invention; Figure 6 This is a three-dimensional schematic diagram of the unfolding frame in an embodiment of the present invention; Figure 7 This is a three-dimensional schematic diagram of the mounting plate in an embodiment of the present invention; Figure 8 This is a three-dimensional schematic diagram of the stage plate in an embodiment of the present invention; Figure 9 This is a three-dimensional schematic diagram of the lower edge column in an embodiment of the present invention; Figure 10 This is a three-dimensional schematic diagram of the side control shaft in an embodiment of the present invention; Figure 11 This is a three-dimensional schematic diagram of the blocking control frame in an embodiment of the present invention.

[0016] In the diagram: 1. Main body of the anti-blocking and anti-wear device; 2. Anti-blocking central frame; 21. Wear-resistant plate; 22. Limiting frame; 23. Hidden plate; 24. Mounting plate; 25. Control plate; 26. Control ring; 3. Movable compartment; 31. Control frame; 32. Deployment frame; 33. Arc-shaped groove; 34. Arc-shaped retaining groove; 35. Retaining protrusion; 36. Hidden compartment; 4. Rotating shaft; 41. Linkage plate; 42. Centralized spring; 43. Translation groove; 44. Linkage frame; 5. Rotating protrusion; 51. Stage plate; 52. Fastening column; 53. Stage groove; 54. Through groove; 55. Lower edge column; 56. Connecting plate; 6. Internal compartment; 7. Side frame; 71. Basic shaft; 72. Side control shaft; 8. Arc-shaped groove; 81. Arc-shaped baffle; 82. Arc-shaped block; 83. Control shaft; 84. Blocking control frame. Detailed Implementation

[0017] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is for the purpose of helping to understand the present invention, but does not constitute a limitation of the present invention.

[0018] Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. Example 1

[0019] This invention relates to a device for preventing blockage and wear in high-toughness concrete pumping pipelines.

[0020] Therefore, in order to effectively solve the above problems, this application proposes a high-toughness concrete pumping pipeline anti-clogging and anti-wear device, as shown in Figure 1 of the attached drawings. Figure 11 As shown, the device installation process is as follows: Place the anti-clogging and anti-wear device body 1 at one end of the pipe, insert the end of the pipe into the annular threaded grooves at both ends of the anti-clogging and anti-wear device body 1, and then rotate the anti-clogging and anti-wear device body 1 to fix the anti-clogging and anti-wear device body 1 to the pipe by using the thread engagement, thereby achieving the first axial fixation. After the main body is screwed together, the anti-wear plate 21 is inserted into the pipe along the pipe axis, so that the limiting frame 22 passes through the pipe and extends to the end of the pipe away from the anti-clogging and anti-wear device main body 1. The limiting frame 22 is fastened to the pipe port from the outside of this end, thus forming a double axial fixation of the anti-clogging and anti-wear device main body 1 together with the annular thread groove, preventing the anti-clogging and anti-wear device main body 1 from being displaced due to axial force during pumping. The rear end of the anti-clogging and anti-wear device main body 1 is provided with an internal compartment 6. When the device is disassembled and stored, the limiting frame 22 can be put into the internal compartment 6 for easy storage and transportation. Furthermore, the process of fixing the abrasion-resistant plate 21 and unfolding the concealed plate 23: After the main body is double-fixed, the control ring 26 is rotated. The rotation of the control ring 26 drives the control frame 31 to slide radially inside the movable chamber 3 through the transmission relationship. The retaining protrusion 35 at the lower end of the control frame 31 is then inserted into the arc-shaped retaining groove 34 on the outer wall of the wear-resistant plate 21. The mating surface between the arc-shaped retaining groove 34 and the retaining protrusion 35 is designed as an inclined surface. When the retaining protrusion 35 and the arc-shaped retaining groove 34 are relatively misaligned under the action of the continuous radial advancement of the control frame 31, the inclined mating surface generates an axial component force pointing in the direction of the pipe axis, which continuously presses the wear-resistant plate 21 towards the inner wall of the pipe, so that the wear-resistant plate 21 is tightly attached to the inner wall of the pipe, thus completing the radial fixation of the wear-resistant plate 21. At the same time, the sliding of the control frame 31 in the movable chamber 3 synchronously drives the unfolding frame 32 to slide along the movable chamber at the rear end of the arc groove 33. The unfolding frame 32 is fixedly connected to the hidden plate 23. Through the axial extension movement of the unfolding frame 32, the hidden plate 23 is driven to unfold from the inside of the hidden chamber 36, so that the hidden plate 23 fits and covers the inner wall of the pipe, forming a wear-resistant isolation protective layer between the concrete and the pipe body, effectively preventing the inner wall of the pipe from being worn faster due to the grinding of concrete aggregate. When it is necessary to store the hidden plate 23, the control ring 26 is rotated in the opposite direction, and the unfolding frame 32 drives the hidden plate 23 to retract into the wear-resistant plate 21, which is convenient for disassembly. Furthermore, the working process of the anti-blocking centralized rack 2: During the concrete pumping process, after the concrete enters the anti-clogging and anti-wear device body 1, it comes into contact with the anti-clogging central frame 2. The anti-clogging central frame 2 guides the concrete, driving it to converge towards the center of the axis of the anti-clogging and anti-wear device body 1, improving the uniformity of concrete distribution in the pipe cross-section, and preventing the concrete from being completely concentrated at the lower end of the pipe due to gravity, thus avoiding local cross-section blockage. The anti-blocking centralized frame 2 is rotatably connected to the groove of the mounting plate 24 through the rotating shaft 4, and can rotate freely around the rotating shaft 4. Therefore, the effective radius of the cross section inside the main body 1 of the anti-blocking and anti-wear device can be adaptively adjusted according to the change of concrete pumping power. When the pumping power is strong, the anti-blocking centralized frame 2 is pushed outward by the impact force of the concrete, and the middle flow cross section expands; When the power decreases, the elastic force of the concentrated spring 42 pushes the anti-blockage concentrated frame 2 back, and the middle flow section shrinks. This adaptive adjustment mechanism effectively reduces the probability of blockage in the device during concrete transmission. Further, the tension adjustment process of the central spring 42: When it is necessary to adjust the tension of the central spring 42, push the two control plates 25 in the direction of mutual approach. The lower end of the control plate 25 is connected to the upper end of the front linkage plate 41. When the control plate 25 moves inward, it pushes the corresponding linkage plate 41 closer to each other. Since the four linkage plates 41 on the same side are connected by the linkage frame 44, the movement of the front linkage plate 41 drives the other three linkage plates 41 on the same side to move inward synchronously. The four linkage plates 41 synchronously apply pressure to the central spring 42 connected to its inner wall, thereby adjusting the compression of the four central springs 42 as a whole, thereby changing the guiding tension of the anti-blocking central frame 2 on the concrete. The linkage plate 41 slides inside the groove of the mounting plate 24 and extends to the upper end of the mounting plate 24 via the translation groove 43, providing positioning support for the connection of the control plate 25. Furthermore, the tension level locking process of the concentrated spring 42 is as follows: After the tension of the central spring 42 is adjusted to the correct position, the two stage plates 51 rotate in opposite directions around their respective rotating protrusions 5, so that the stage grooves 53 on the inner side of the two stage plates 51 are respectively engaged with the corresponding fastening posts 52, thus completing the initial engagement and locking of the relative positions of the two control plates 25 and preventing the control plates 25 from shifting outward due to the spring rebound force. After the initial locking is completed, the connecting plate 56 and the two lower edge posts 55 of different lengths connected to its lower end are respectively inserted into the through slots 54 at the upper end of the corresponding stage plate 51. Since the two lower edge posts 55 are of different lengths, after the two lower edge posts 55 are inserted into their respective corresponding through slots 54, the connecting plate 56 simultaneously crosses and covers the upper ends of the two stage plates 51, forming a secondary covering lock on the two stage plates 51, preventing the two stage plates 51 from rotating in opposite directions, thereby reliably fixing the relative positions of the two control plates 25 and completing the graded stable locking of the tension of the concentrated spring 42. Further adjustments to the centralized location of the anti-blocking central rack 2: When the position of the anti-blocking centralized frame 2 needs to be adjusted, the side control shaft 72 is rotated. The rotation of the side control shaft 72 causes the side control shaft 72 to move on the anti-blocking and anti-wear device body 1, thereby pushing the base shaft 71 to move. The movement of the base shaft 71 drives the side frame 7 and the anti-blocking centralized frame 2 to move. At the same time, the spring connected to the inner wall of the inner chamber pushes the base shaft 71 to move away from the side control shaft 72, but it cannot disengage the base shaft 71 from the inside of the inner chamber. Thus, when the side control shaft 72 moves, the use angle of the anti-blocking centralized frame 2 can be adjusted, thereby achieving the adjustment of the degree of concrete concentration. Further, the position of the limiting bracket 22 is fixed: When the limiting frame 22 is inserted into the interior of the built-in compartment 6, the limiting frame 22 will first contact the blocking control frame 84 and push the blocking control frame 84 to rotate along the control shaft 83 until the front end of the blocking control frame 84 contacts the rear end of the limiting frame 22. At this time, the arc-shaped baffle 81 and the arc-shaped block 82 move along the arc-shaped groove 8, thereby inserting the arc-shaped baffle 81 into the position that contacts the upper rear side of the blocking control frame 84, thereby blocking the rotation space of the blocking control frame 84 and preventing the blocking control frame 84 from rotating, thereby realizing the control of the rotation state of the blocking control frame 84.

[0021] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on.

[0022] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0023] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments.

[0024] For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations still fall within the protection scope of the present invention.

Claims

1. A high-toughness concrete pumping pipeline anti-clogging and anti-wear device, comprising an anti-clogging and anti-wear device body (1), characterized in that: The inner wall of the anti-clogging and anti-wear device body (1) is connected to two mounting plates (24). Between the two mounting plates (24) is an anti-clogging concentrator (2) for guiding concrete towards the middle of the anti-clogging and anti-wear device body (1) during transportation. The front end of the anti-clogging and anti-wear device body (1) is connected to an anti-wear plate (21) for contacting the inner wall of the pipe. Inside the anti-wear plate (21) is a hidden plate (23) to prevent wear on the inner wall of the pipe. The front end of the anti-wear plate (21) is connected to a device for connecting the anti-clogging and anti-wear device body (1) to the pipe. The limiting frame (22) is bound together. The mounting plate (24) is connected to a control plate (25) on the side near the inner wall of the anti-blocking and anti-wear device body (1) for controlling the tightness of the anti-blocking central frame (2). The outer wall of the anti-blocking and anti-wear device body (1) is connected to a control ring (26) for controlling the usage state of the hidden plate (23). Both the front and rear ends of the anti-blocking and anti-wear device body (1) are provided with annular threaded grooves for cooperating with the pipeline. The left side of the anti-wear plate (21) is provided with a hidden compartment (36) for storing the hidden plate (23).

2. The anti-clogging and anti-wear device for high-toughness concrete pumping pipelines according to claim 1, characterized in that: The outer wall of the anti-blocking and anti-wear device body (1) is provided with a movable compartment (3), and a control frame (31) is slidably connected inside the movable compartment (3). On the side of the movable compartment (3) away from the control frame (31), an unfolding frame (32) for controlling the unfolding and storage of the hidden plate (23) is connected.

3. The anti-clogging and anti-wear device for high-toughness concrete pumping pipelines according to claim 2, characterized in that: The front end of the anti-blocking and anti-wear device body (1) is provided with an arc-shaped groove (33), the rear end of the arc-shaped groove (33) is provided with a movable compartment, and the unfolding frame (32) extends into the interior of the movable compartment and slides in connection with the movable compartment, and the unfolding frame (32) is connected to the hidden plate (23).

4. The anti-clogging and anti-wear device for high-toughness concrete pumping pipelines according to claim 3, characterized in that: The lower end of the control frame (31) is connected to a retaining protrusion (35) for fixing the position of the wear-resistant plate (21), and the outer wall of the wear-resistant plate (21) is provided with an arc-shaped retaining groove (34) for cooperating with the retaining protrusion (35).

5. The anti-clogging and anti-wear device for high-toughness concrete pumping pipelines according to claim 1, characterized in that: Each of the two mounting plates (24) has four grooves on the side that is close to each other, and each of the two mounting plates (24) has four translation grooves (43) on the upper end. Each of the eight grooves has a sliding connecting plate (41) inside, and the connecting plate (41) extends to the upper end of the mounting plate (24) through the translation groove (43).

6. The anti-clogging and anti-wear device for high-toughness concrete pumping pipelines according to claim 5, characterized in that: The grooves of the two mounting plates (24) are rotatably connected to a rotating shaft (4) on the side that is close to each other. The outer walls of the four rotating shafts (4) are rotatably connected to the four anti-blocking centralized frames (2). The left and right sides of the four anti-blocking centralized frames (2) are respectively connected to the inner wall of the linkage plate (41) through a centralized spring (42). The upper end of the front linkage plate (41) is connected to the lower end of the control plate (25). One side of the four linkage plates (41) is connected through a linkage frame (44).

7. The anti-clogging and anti-wear device for high-toughness concrete pumping pipelines according to claim 1, characterized in that: The upper ends of the two control plates (25) are respectively rotatably connected to two rotating protrusions (5) and a fastening post (52), and the outer walls of the two rotating protrusions (5) are rotatably connected to a stage plate (51) for fastening with the fastening post (52).

8. The anti-clogging and anti-wear device for high-toughness concrete pumping pipelines according to claim 7, characterized in that: Each of the two stage plates (51) has a stage groove (53) on one side that is close to each other, which is used to cooperate with the fastening post (52). The upper end of each of the two stage plates (51) has a through groove (54). The two through grooves (54) are slidably connected to the lower edge post (55). The two lower edge posts (55) have different lengths. The upper end of the two lower edge posts (55) is connected to the lower end of the same connecting plate (56). The rear end of the anti-blocking and anti-wear device body (1) has an internal compartment (6), and the internal compartment (6) cooperates with the limiting frame (22).

9. The anti-clogging and anti-wear device for high-toughness concrete pumping pipelines according to claim 1, characterized in that: The anti-blocking centralized frame (2) is connected to two side frames (7) on the side away from the center of the anti-blocking and anti-wear device body (1). A side shaft is rotatably connected between the two side frames (7). A base shaft (71) is connected to the outer wall of the side shaft. A side control shaft (72) is connected to the upper end of the base shaft (71). The upper end of the side control shaft (72) passes through the anti-blocking and anti-wear device body (1) and is spirally connected to the anti-blocking and anti-wear device body (1). An inner compartment is opened at the lower end of the side control shaft (72). The base shaft (71) is connected to the top wall of the inner compartment through a spring. An arc-shaped groove (8) is opened at the rear end of the outer wall of the anti-blocking and anti-wear device body (1). The inner wall of the arc-shaped groove (8) is slidably connected to an arc-shaped block (82). The outer rear end of the main body (1) of the anti-blocking and anti-wear device is provided with a control groove for communicating with the inner compartment (6). The side wall of the control groove is rotatably connected to a control shaft (83). The outer wall of the control shaft (83) is connected to a blocking control frame (84). The blocking control frame (84) cooperates with the limit frame (22). The outer wall of the arc-shaped block (82) is connected to an arc-shaped baffle (81) for limiting the rotation state of the blocking control frame (84). The side wall of the control groove is provided with an annular groove. The inner wall of the annular groove is connected to the control shaft (83) by a spring.

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