Quick connecting structure between wear-resistant sheet and rotating shaft
Patent Information
- Application Number
- CN202522361872.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-07
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-07
AI Technical Summary
相对而言，现有的连接结构在安装时较为耗费安装时间
[0006]本实用新型具有的积极效果是：通过设置快速插接部件可将耐磨片与转轴快速地连接在一起，快速插接部件的轴盘可直接与已有的耐磨片固定连接，也可在轴盘上直接利用等离子焊接机焊接耐磨层。特别是在快速插接部件轴盘的相反端设置端面小于轴盘的轴柄，可利用转轴端的插接孔以及轴柄固定机构固定快速插接部件；通过设置将轴柄与插接孔设置为花键形结构、等边多棱形结构，有利于转轴带动快速插接部件以及耐磨片同步转动。特别是将快速插接部件设计成带有锥度的锥形花键形结构、等边多棱锥体形和圆锥形结构，不仅可传递扭矩实现转动，同时可保证与转轴的同心度，可利用拉紧螺栓或拉杆锁紧快速插接部件；通过将转轴的轴心位置设置通孔，可穿设拉紧螺栓或拉杆，从转轴的末端拉紧快速插接部件。特别是将轴柄设计成圆锥形结构，并在轴柄上设置与插接孔匹配的转动卡位，可与转轴周向同步转动；在轴柄后端部外周设置周向卡槽，可利用转轴前端内部设置的多个夹爪，在转轴末端连接的电动推杆作用下，拉动拉杆沿着轴向拉紧快速插接部件；通过在多个夹爪端部设置倾斜端，有利于轴柄末端沿着倾斜端滑动进入轴柄末端设置的周向卡槽中；通过拉杆前端设计锥度形结构，有利于拉杆后退时，夹爪后端以铰接轴为轴心沿着径向外周扩张；相反，夹爪前端以铰接轴为轴心沿着径向向内收缩，夹紧轴柄上周向卡槽，有利于在电动推杆的作用下向后拉紧，进一步实现定心；通过在轴柄上设置与插接孔匹配的转动卡位，有利于转轴转动时带动轴柄周向转动；通过在铰接轴后端的多个夹爪外周设置弹力部件，有利于多个夹爪前端处于张开状态下，轴柄末端沿着前倾斜端滑进多个夹爪内周；通过按动按钮开关接通电动推杆的电源，使电动推杆动作，向后拉动拉杆，将夹爪的前端卡紧在周向卡槽中，实现夹紧后拉的目的。通过利用本实用新型，可加快耐磨片更换速度，缩短更换时间，保证在停机时间内完成，不影响生产线的按时重新启动进入生产。
Smart Images
Figure CN224823919U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a connection structure, and more particularly to a quick connection structure between a wear-resistant sheet and a rotating shaft, belonging to the field of side guide plates for the front roller conveyor of a strip coiler. Background Technology
[0002] After strip steel is rolled, it is coiled into coils for easy handling and transportation, and conveyed by roller conveyors. During the conveying process, to ensure the strip steel travels along the center of the roller conveyor, side guide plates are installed on both sides of the roller conveyor. Figure 9 shows a schematic diagram of the wear-resistant plates inside the side guide plate. To improve the wear resistance of the side guide plate 31, wear-resistant plates 30 are generally installed at the contact points between the strip steel and the side guide plate 31 on both sides of the side guide plate, thereby reducing wear on the side guide plate 31 and increasing its service life. To further improve the service life of the wear-resistant plates 30, circular wear-resistant plates 30 are generally used. The wear-resistant plates 30 are fixed to the end of the rotating shaft 20, and by rotating the wear-resistant plates 30, the strip steel rubs against the wear-resistant plates 30 in the same direction. The commonly used wear-resistant pad 30, through plasma cladding welding, combines high hardness, high temperature resistance, and impact resistance, extending its service life by 15-20 times compared to traditional liners. Its surface is free of slag and has fewer burrs, effectively improving the surface quality of the strip steel and production efficiency. Existing wear-resistant pads 30 and rotating shafts 20 utilize a sprocket 24 mounted on the rotating shaft 20, driven by a drive device 32; or a gear is mounted on the rotating shaft 20, driven by a transmission mechanism via the drive device 32, which in turn drives the rotating shaft 20. The transmission mechanism includes gear drives, rack drives, bevel gears, worm gear drives, and combinations thereof. Once the wear-resistant pad reaches the end of its service life, it needs to be replaced. However, replacement cannot be done at any time; it must coincide with the production line's maintenance schedule. Strip steel production should not be affected or halted due to wear-resistant pad replacement. Furthermore, production line downtime is limited, and the side guide plates have a large number of wear-resistant plates, requiring not only significant manpower but also skilled replacement technicians. Moreover, a crucial factor is the connection structure between the wear-resistant plates and the shaft, which directly impacts replacement speed. Existing connection structures involve one or more countersunk holes in the center or near the center of the wear-resistant plate, which is then fixed to a threaded hole at the shaft end with a screw; alternatively, a bolt is integrally formed on the back of the wear-resistant plate, screwing it into the threaded hole at the shaft end, with threads in both directions as needed. Relatively speaking, existing connection structures are time-consuming to install.
[0003] The ability to quickly replace wear-resistant pads within a limited timeframe has become a key technical challenge. Summary of the Invention
[0004] In order to quickly replace the wear-resistant pads within a limited time, this application develops a quick connection structure between the wear-resistant pads and the rotating shaft. The purpose is to speed up the replacement speed of the wear-resistant pads, shorten the replacement time, and ensure that the replacement is completed within the downtime, so as not to affect the timely start-up of the production line.
[0005] The technical solution of this utility model is: a quick connection structure between a wear-resistant plate and a rotating shaft, including a wear-resistant plate and a rotating shaft that drives the wear-resistant plate to rotate. A quick-connect component is provided between the wear-resistant plate and the rotating shaft. The quick-connect component includes a shaft disc fixed to the wear-resistant plate and a shaft handle that is quickly connected to the rotating shaft. The front end area of the shaft handle is smaller than the front end area of the shaft disc. A rotating locking position matching the insertion hole is provided on the shaft handle. The end of the rotating shaft is provided with an insertion hole matching the shaft handle. A through hole is provided in the shaft center. A shaft handle fixing mechanism is provided in the insertion hole at the end of the rotating shaft. Further, the shaft disc is a component with an end face area smaller than or equal to that of the wear-resistant plate. The wear-resistant plate and the shaft disc are integral structures, welded connections, or bolted connections. Further, the shaft handle is a conical, splined, or equilateral polygonal structure, wherein the splined and equilateral polygonal structures include conical splined and equilateral polygonal pyramidal structures. Furthermore, the shaft fixing mechanism includes a fixing screw hole on the rear end face of the shaft handle, a tension bolt in the shaft through hole, the front end of the tension bolt being threaded into the fixing screw hole, the locking part of the tension bolt being located at the end of the shaft, and the tension bolt being a manually locking bolt; Furthermore, the rotating locking position is provided on multiple straight edges on the outer periphery of the shaft handle, wherein two straight edges are parallel straight edges, and multiple straight edges are polygons connected end to end; Furthermore, the shaft handle is a conical structure, a circumferential groove is provided on the outer periphery of the rear end of the shaft handle, multiple claw grooves are evenly provided on the inner periphery of the shaft insertion hole, claws are respectively provided in the claw grooves, the front ends of the multiple claws are provided with inclined ends, a hinge shaft is provided in the middle of the multiple claws, a pull rod with a tapered front end is provided on the inner periphery of the rear end of the multiple claws, an elastic component is provided on the outer periphery of the multiple claws at the rear end of the hinge shaft, the pull rod is located in the shaft through hole, the end of the pull rod is connected to an external electric push rod of the shaft, and the connection part is located on one side of the end of the shaft; Furthermore, the power supply of the electric push rod is connected to the power supply through a rotary connector fixed to the rotating shaft. The electric push rod rotates synchronously with the rotating shaft, and the electric push rod is fixed on the rotating shaft. Furthermore, the electric push rod includes a push button switch, which is located on the side of the side guide plate body near the strip steel.
[0006] The advantages of this invention are as follows: By providing a quick-connect component, the wear-resistant sheet and the rotating shaft can be quickly connected together. The shaft disc of the quick-connect component can be directly fixed to an existing wear-resistant sheet, or the wear-resistant layer can be directly welded onto the shaft disc using a plasma welding machine. Specifically, a shaft handle with a smaller end face than the shaft disc is provided at the opposite end of the quick-connect component's shaft disc, allowing the quick-connect component to be fixed using the insertion hole at the rotating shaft end and the shaft handle fixing mechanism. By designing the shaft handle and insertion hole as a spline or equilateral polygonal structure, it is beneficial for the rotating shaft to drive the quick-connect component and the wear-resistant sheet to rotate synchronously. In particular, designing the quick-connect component as a tapered spline, equilateral polygonal pyramid, or conical structure not only transmits torque to achieve rotation but also ensures concentricity with the rotating shaft. The quick-connect component can be locked using a tension bolt or tie rod. By providing a through hole at the shaft's center, a tension bolt or tie rod can be inserted to tighten the quick-connect component from the end of the rotating shaft. In particular, the shaft is designed with a conical structure and a rotating locking position that matches the insertion hole, allowing it to rotate synchronously with the shaft circumferentially. A circumferential groove is provided on the outer circumference of the rear end of the shaft, allowing multiple grippers inside the front end of the shaft to pull the connecting rod axially and tighten the quick-connect component under the action of an electric push rod connected to the end of the shaft. The inclined ends of the grippers facilitate the sliding of the shaft end into the circumferential groove at the end of the shaft. The tapered structure at the front end of the connecting rod allows the rear end of the grippers to expand radially outward around the hinge axis when the connecting rod retracts; conversely, the front end of the grippers... The device retracts radially inward around the hinge shaft, clamping the circumferential groove of the shaft handle. This facilitates backward tightening under the action of the electric push rod, further achieving centering. A rotating locking position on the shaft handle, matching the insertion hole, facilitates circumferential rotation of the shaft handle when the shaft rotates. Elastic components on the outer periphery of multiple grippers at the rear end of the hinge shaft allow the front ends of the grippers to be in an open state, with the end of the shaft handle sliding into the inner periphery of the grippers along the forward inclined end. Pressing the button switch to power the electric push rod causes it to actuate, pulling the pull rod backward to clamp the front ends of the grippers into the circumferential groove, achieving the purpose of clamping and pulling back. This invention accelerates the replacement speed of wear-resistant plates, shortens replacement time, ensures completion within downtime, and does not affect the timely restart of the production line. Attached Figure Description
[0007] Figure 1 is a cross-sectional schematic diagram of a representative shaft with wear-resistant plates fixed on it.
[0008] Figure 2 is a schematic cross-sectional view of the manual fixing mechanism for quick-connect components.
[0009] Figure 3 is a schematic cross-sectional view of the electric fixing mechanism of the conical quick-connect component.
[0010] Figure 4 is a partially enlarged schematic diagram of part A of the shaft fixing mechanism in Figure 3.
[0011] Figure 5 is a schematic diagram of the cross-sectional structure of the spline-shaped shaft.
[0012] Figure 6 is a schematic cross-sectional view of the tapered spline shaft.
[0013] Figure 7 is a schematic diagram of the three-dimensional structure of an equilateral polygonal shaft.
[0014] Figure 8 is a schematic diagram of the three-dimensional structure of a tapered equilateral polygonal shaft.
[0015] Figure 9 is a schematic diagram of the wear-resistant pads on the inner side of the side guide plate body.
[0016] Labeling Explanation: 10-Quick-connect component, 11-Shaft disc, 12-Shaft handle, 12a-Conical shaft handle, 12b-Spline shaft handle, 12c-Conical spline shaft handle, 12d-Polygonal shaft handle, 12e-Conical polygonal shaft handle, 13-Rotating locking position, 14-Shaft handle tail, 15-Screw hole, 16-Circumferential groove, 20-Rotating shaft, 21-Matching hole housing, 21a-Conical mating hole housing, 21b-Spline 21c-Conical spline-shaped plug-in hole housing, 22-Through hole, 23a-Tightening bolt, 23b-Pull rod, 23c-Tapered structure, 24-Sprocket, 25-Claw groove, 26-Claw, 27-Rotary connector, 28-Electric push rod, 28a-Connecting rod, 29-Hinge shaft, 29a-Elastic component, 30-Wear-resistant plate, 30a-Wear-resistant layer, 31-Side guide plate, 32-Drive device. Detailed Implementation
[0017] The specific technical solution of this utility model will be described in detail below with reference to the accompanying drawings. In the following description, the direction closer to the wear-resistant sheet of each component will be referred to as the front end or front.
[0018] The technical solution of this utility model is: a quick connection structure between a wear-resistant plate and a rotating shaft. Figure 1 is a cross-sectional schematic diagram of a quick-connect component 10 with a conical shaft handle 12a as a representative example; Figures 2 and 3 show the front end structure of the rotating shaft 20 that matches the conical shaft handle 12a, respectively, for manual and electric operation. The quick-connect component 10 includes a wear-resistant plate 30 and a rotating shaft 20 that drives the wear-resistant plate to rotate. The quick-connect component 10 is provided between the wear-resistant plate 30 and the rotating shaft 20. The quick-connect component 10 includes a shaft disc 11 fixed together with the wear-resistant plate 30 and a shaft handle 12 that is quickly connected to the rotating shaft 20. The front end area of the shaft handle 12 is smaller than the front end area of the shaft disc 11, and a rotating locking position 13 that matches the insertion hole is provided on the shaft handle 12. Specifically, a rotation locking position 13 is separately provided on the conical shaft handle 12a; in spline-shaped, equilateral polygonal, conical spline-shaped, and equilateral polygonal pyramid-shaped structures, the spline and polygonal parts serve as rotation locking positions during circumferential rotation. The front end of the rotating shaft is provided with a plug-in hole matching the shaft handle, 21 is the outer shell of the plug-in hole, the shaft center of the rotating shaft 20 is provided with a through hole 22, and a shaft handle fixing mechanism is provided in the plug-in hole at the end of the rotating shaft 20.
[0019] The shaft disk 11 is a component whose end face is less than or equal to the area of the wear-resistant plate 30. The wear-resistant plate 30 and the shaft disk 11 are an integral structure, welded connection or bolted connection.
[0020] The shaft can be conical, splined, or equilateral polygonal, with the splined and equilateral polygonal structures including conical spline and equilateral polygonal pyramidal structures.
[0021] Figure 2 is a schematic cross-sectional view of the manual fixing mechanism of the quick-connect component 10. The shaft fixing mechanism includes a fixing screw hole 15 on the rear end face of the shaft 12, and a tension bolt 23a inside the through hole 22 of the rotating shaft 20. The front end of the tension bolt 23a is threaded into the fixing screw hole 15, and the locking part of the tension bolt 23a is located at the end of the rotating shaft 20. The tension bolt 23a is a manually locking bolt. In this structure, the rear end of the conical shaft 12a has a screw hole 15, and the tension bolt 23a passes through the through hole 22 of the rotating shaft 20. After inserting the conical shaft 12a with the wear-resistant plate 30, the tension bolt 23a can be screwed into the screw hole 15 using a wrench or a dedicated power tool to fix the conical shaft 12a with the wear-resistant plate 30.
[0022] In addition to the manual fixing mechanism, the quick-connect component 10 also includes an electric locking mechanism. Figure 3 is a schematic cross-sectional view of the electric fixing mechanism of the conical quick-connect component 10, and Figure 4 is a partially enlarged schematic view of part A of the shaft fixing mechanism in Figure 3. The shaft 12 is a conical shaft 12a, and a rotating locking position 13 is provided at the front end of the shaft 12. The rotating locking position 13 can be two or more straight sides provided on the outer periphery of the shaft 12; the two straight sides can be parallel straight sides or straight sides connected end to end; the two or more straight sides can be a polygon connected end to end or multiple sides distributed on the outer periphery of the shaft, or it can be a spline mechanism on the outer periphery of the shaft. In this embodiment, the rotating locking position 13 has a hexagonal structure; a circumferential groove 16 is provided on the outer periphery of the shaft tail 14; a plurality of gripper grooves 25 are evenly provided on the inner periphery of the rotating shaft insertion hole, that is, on the inner periphery of the conical insertion hole shell 21a, and grippers 26 are respectively provided in the gripper grooves 25; an inclined end is provided at the front end of the plurality of grippers 26, and a hinge shaft 29 is provided in the middle of the plurality of grippers 26; a pull rod 23b with a tapered structure at the front end is provided on the inner periphery of the rear end of the plurality of grippers 26, and 23c is a tapered structure at the front end of the pull rod 23b; an elastic component 29a is provided on the outer periphery of the plurality of grippers at the rear end of the hinge shaft 29; the pull rod 23b is located in the through hole 22 inside the rotating shaft 20, and the end of the pull rod 23b is connected to the electric push rod outside the rotating shaft 20 through a connecting rod 28a, with the connecting part located on one side of the end of the rotating shaft 20.
[0023] The electric push rod 28 is powered via a rotary connector 27 fixed to the rotating shaft. The rotary connector 27 is existing technology; the side connected to the power supply remains fixed, while the side fixed to the rotating shaft 20 rotates with the shaft. One side is connected to a flexible contact, and the other end is a ring electrode. These electrodes rotate and connect to each other during rotation, achieving electrical connection. The output end is electrically connected to the electric push rod 28. The electric push rod 28 is fixed to the rotating shaft 20 and rotates with it. However, the rotating shaft rotates slowly and for a short time, with a rotation angle not exceeding 5°. The reusable wear-resistant pad only rotates 1°.
[0024] In order to achieve clamping of the gripper, the electric push rod 28 includes a push button switch. The push button switch is located on the side of the side guide plate body near the strip steel. After insertion, pressing the push button switch can lock the gripper and fix the conical shaft.
[0025] Figure 5 is a schematic cross-sectional view of the spline-shaped shaft. In this embodiment, the shaft 12 has a general spline structure. The spline-shaped shaft 12b and the spline-shaped insertion hole housing 21b are connected by a common matching external spline and internal spline insertion connection. After insertion, the wear-resistant plate 30 can be fixed by threading the front end of the tension bolt 23a into the fixing screw hole 15 at the rear end of the spline-shaped shaft 12b. The spline plays a role in circumferential torque transmission.
[0026] Similarly, the spline-shaped shaft 12b and the spline-shaped insertion hole housing 21b can be connected by a matching tapered spline-shaped shaft 12c and tapered spline-shaped insertion hole housing 21c through external and internal splines. Figure 6 This is a cross-sectional structural diagram of a tapered spline shaft. After insertion, the wear-resistant plate 30 can be fixed by connecting the front end of the tension bolt 23a to the fixing screw hole 15 at the rear end of the tapered spline shaft 12c. The spline in the design plays the role of circumferential torque transmission.
[0027] Similarly, the polygonal shaft handle 12d can be matched with the polygonal insertion hole housing, and the tapered polygonal shaft handle 12e can be matched with the tapered polygonal insertion hole housing. Figure 7 is a three-dimensional structural diagram of the equilateral polygonal shaft handle, and Figure 8 is a three-dimensional structural diagram of the tapered equilateral polygonal shaft handle. After insertion, the front end of the aforementioned tensioning bolt 23a is threaded into the fixing screw hole 15 at the rear end of the polygonal shaft handle 12d and the tapered polygonal shaft handle 12e, so that the polygonal shaft handle 12d and the tapered polygonal shaft handle 12e can enter the corresponding insertion hole housing respectively, thereby fixing the wear-resistant plate 30; the equilateral polygonal structure plays a role in circumferential torque transmission.
[0028] Of course, it is also possible to use unequal-sided polygons to match and achieve docking, but the angle needs to be carefully checked and aligned during the insertion process, which will waste time.
[0029] The advantages of this invention are as follows: The quick-connect component 10 allows for the rapid connection of the wear-resistant plate 30 to the rotating shaft 20. The shaft disc 11 of the quick-connect component 10 can be directly fixed to the existing wear-resistant plate 30, or the wear-resistant layer 30a can be directly welded onto the shaft disc 11 using a plasma welding machine. Specifically, a shaft handle 12 with a smaller end face than the shaft disc is provided at the opposite end of the shaft disc 11 of the quick-connect component 10. The quick-connect component 10 can be fixed using the insertion hole at the end of the rotating shaft 20 and the shaft handle fixing mechanism. By setting the shaft handle 12 and the insertion hole to a spline-shaped structure or an equilateral polygonal structure, it is beneficial for the rotating shaft 20 to drive the quick-connect component 10 and the wear-resistant plate 30 to rotate synchronously. In particular, the quick-connect component 10 is designed as a tapered spline structure, an equilateral polygonal pyramid shape, or a conical structure, which not only allows it to rotate but also enables it to be concentric with the rotating shaft 20. The quick-connect component 10 can be locked using a tension bolt 23a or a pull rod 23b. By setting a through hole 22 at the axial position of the rotating shaft 20, a tension bolt 23a or a pull rod 23b can be inserted to tighten the quick-connect component 10 from the end of the rotating shaft 20. In particular, the shaft handle 12 is designed with a conical structure, and a rotating locking position 13 matching the insertion hole is provided on the shaft handle 12, which can rotate synchronously with the rotating shaft 20 in the circumferential direction. A circumferential groove 16 is provided on the outer circumference of the rear end of the shaft handle 12. Multiple grippers 26 provided inside the front end of the rotating shaft 20 can be used to pull the pull rod 23b along the axial direction to tighten the quick-connect component 10 under the action of the electric push rod 28 connected to the end of the rotating shaft 20. By providing inclined ends at the ends of the multiple grippers 26, it is beneficial for the end of the shaft handle 12 to slide into the circumferential groove 16 provided at the end of the shaft handle along the inclined ends. The tapered structure of the front end of the pull rod 23b is beneficial for the rear end of the gripper 26 to expand radially outward around the hinge shaft 29 when the pull rod 23b is retracted. Conversely, the front end of the gripper 26 retracts radially inward around the hinge shaft 29, and the gripper 26 clamps the shaft handle 12. The circumferential groove 16 facilitates the backward tightening under the action of the electric push rod 28, further achieving centering; the rotation slot 13 on the shaft handle 12, which matches the insertion hole, facilitates the circumferential rotation of the shaft handle 12 when the shaft 20 rotates; the elastic component 29a on the outer periphery of the multiple grippers 26 at the rear end of the hinge shaft 29 facilitates the opening of the front ends of the multiple grippers 26, allowing the end of the shaft handle 12 to slide into the inner periphery of the multiple grippers 26 along the inclined front end; by pressing the button switch to turn on the power of the electric push rod 28, the electric push rod 28 is activated, pulling the pull rod 23b backward, clamping the front ends of the grippers 26 in the circumferential groove 16, achieving the purpose of clamping and pulling backward.By utilizing this invention, the replacement speed of wear-resistant plates can be accelerated, the replacement time can be shortened, and the replacement can be completed within the downtime, without affecting the timely restart of the production line.
Claims
1. A quick-connect structure between a wear-resistant plate and a rotating shaft, comprising a wear-resistant plate and a rotating shaft for driving the wear-resistant plate to rotate, characterized in that: A quick-connect component is provided between the wear-resistant plate and the rotating shaft. The quick-connect component includes a shaft disc fixed together with the wear-resistant plate and a shaft handle that is quickly connected to the rotating shaft. The front end of the shaft handle is smaller than the front end area of the shaft disc. A rotating locking position that matches the insertion hole is provided on the shaft handle. The end of the rotating shaft is provided with an insertion hole that matches the shaft handle. A through hole is provided in the shaft center. A shaft handle fixing mechanism is provided in the insertion hole at the end of the rotating shaft.
2. The quick-connect structure between the wear-resistant plate and the rotating shaft according to claim 1, characterized in that: The shaft disc is a component with an end face smaller than or equal to that of the wear-resistant plate. The wear-resistant plate and the shaft disc are an integral structure, welded connection, or bolted connection.
3. The quick-connect structure between the wear-resistant plate and the rotating shaft according to claim 1, characterized in that: The shaft is a conical, splined, or equilateral polygonal structure, wherein the splined and equilateral polygonal structures include conical splined and equilateral polygonal pyramidal structures.
4. The quick-connect structure between the wear-resistant plate and the rotating shaft according to claim 1, characterized in that: The shaft fixing mechanism includes a fixing screw hole on the rear end face of the shaft, a tension bolt in the through hole of the rotating shaft, the front end of the tension bolt being threaded into the fixing screw hole, the locking part of the tension bolt being located at the end of the rotating shaft, and the tension bolt being a manual locking bolt.
5. The quick-connect structure between the wear-resistant plate and the rotating shaft according to claim 1, characterized in that: The rotating locking position consists of multiple straight edges arranged on the outer periphery of the shaft handle, wherein two straight edges are parallel straight edges, and multiple straight edges are polygons connected end to end.
6. The quick-connect structure between the wear-resistant plate and the rotating shaft according to claim 1, characterized in that: The shaft handle has a conical structure. A circumferential groove is provided on the outer periphery of the rear end of the shaft handle. Multiple gripper grooves are evenly provided on the inner periphery of the shaft insertion hole. Grippers are provided in the gripper grooves. An inclined end is provided at the front end of the multiple grippers. A hinge shaft is provided in the middle of the multiple grippers. A pull rod with a tapered front end is provided on the inner periphery of the rear end of the multiple grippers. Elastic components are provided on the outer periphery of the multiple grippers at the rear end of the hinge shaft. The pull rod is located in the through hole of the shaft. The end of the pull rod is connected to the electric push rod outside the shaft. The connection part is located on one side of the end of the shaft.
7. The quick-connect structure between the wear-resistant plate and the rotating shaft according to claim 6, characterized in that: The electric push rod is connected to the power supply through a rotary connector fixed to the rotating shaft. The electric push rod rotates synchronously with the rotating shaft, and the electric push rod is fixed on the rotating shaft.
8. The quick-connect structure between the wear-resistant plate and the rotating shaft according to claim 6, characterized in that: The electric push rod includes a push-button switch, which is located on the side of the side guide plate body near the strip steel.