A limiting mechanism

Abstract

The application provides a limiting mechanism, which comprises an elastic swing mechanism arranged at the entrance of a steel plate brushing device, the elastic swing mechanism comprises a rotating plate in a horizontal position, the rotating plate extends in the left-right direction and can be elastically rotated up and down along the horizontal position with the middle part of the rotating plate as a fulcrum; the rotating plate comprises a raised part facing the steel plate brushing device and a pressing part facing away from the steel plate brushing device; then an elastic switch mechanism is arranged below the pressing part of the rotating plate in the elastic swing mechanism, and the elastic switch mechanism is used for limiting or unlocking the elastic rotating trend of the pressing part, so as to control the raised part of the rotating plate to cooperate with or separate from the roller seat, and the sliding state of the roller seat can be controlled without the elastic switch mechanism contacting the roller seat, thereby reducing the operation difficulty of the limiting mechanism and prolonging the service life of the limiting mechanism.

Description

Technical Field

[0001] This invention relates to the field of metal surface treatment, and in particular to a limiting mechanism. Background Technology

[0002] After steel plates are produced, they are made into corresponding parts according to different usage requirements. However, before the steel plates are put into the manufacturing process, preparation time for processing the steel plates must be allowed. During this time, the steel plates will react with moisture and chemicals in the air, causing the surface material of the steel plates to peel off or rust. In order to remove the rust layer, the existing method is to use grinding equipment to remove rust by brushing the surface of the steel plates. This equipment uses brush rollers to physically grind the surface of the steel plates, which improves the rust removal efficiency of the steel plates and has less pollution, so it is accepted by people. However, this equipment requires the brush rollers to come into contact with the surface of the steel plates during grinding. After the brush rollers have been used for a long time, the grinding effect will also decrease. Therefore, it is necessary to place the old brush rollers on the roller changing car and replace them with new rollers.

[0003] Existing roller changing carts include an upper roller seat that slides into a track plate inside the steel plate grinding equipment for brush roller replacement. To prevent the roller seat from sliding out of the equipment during roller replacement, a limiting mechanism is typically installed at the opening of the equipment. This limiting mechanism includes a limiting component that contacts the roller seat, with a handle attached. By operating the handle, the roller seat can be slidably limited and unlocked. However, in existing limiting mechanisms, because the limiting plate is in direct contact with the roller seat, the roller seat's mass increases after absorbing the replaced brush roller. Therefore, when the handle is operated to release the limiting component from the roller seat, significant friction is generated between the limiting component and the roller seat, making it difficult for the roller seat to separate from the limiting plate. This increases the operational difficulty of the limiting mechanism. Furthermore, repeated contact and separation between the limiting plate and the roller seat can easily cause deformation and cracking, reducing the overall service life of the limiting mechanism. Summary of the Invention

[0004] To address the aforementioned technical problems, the present invention aims to provide a limiting mechanism. By providing an elastic switch mechanism below the pressing part of the rotating plate in an elastic swing mechanism, and using the elastic switch mechanism to limit or unlock the elastic rotation trend of the pressing part, the tilting part of the rotating plate can be controlled to engage or disengage with the roller seat. This allows the elastic switch mechanism to control the sliding state of the roller seat without contacting it, thereby reducing the operational difficulty of the limiting mechanism and improving its service life.

[0005] The technical solution of this invention is implemented as follows:

[0006] A limiting mechanism is disposed between the frame of a steel plate grinding and brushing equipment and a track plate symmetrically arranged front and rear and extending in the left and right directions, and is used to control the motion state of the roller seat sliding into the steel plate grinding and brushing equipment. The limiting mechanism includes:

[0007] An elastic swing mechanism is installed at the inlet of the steel plate grinding and brushing equipment. The elastic swing mechanism includes a rotating plate in a horizontal position. The rotating plate extends in the left and right direction and can rotate elastically up and down in the horizontal position with its middle position as the fulcrum. The rotating plate includes a raised part facing the steel plate grinding and brushing equipment and a pressed part facing away from the steel plate grinding and brushing equipment.

[0008] The flexible switch mechanism includes a flexible telescopic pin disposed below the pressing part and extending in the front-to-back direction. The flexible telescopic pin can elastically extend and retract in the front-to-back direction and can rotate circumferentially along its own axis. The head of the flexible telescopic pin is provided with an upper and lower opposing telescopic end and a limiting end. The telescopic end of the head of the flexible telescopic pin contacts the pressing part. When the pressing part rotates elastically downward, the telescopic end is configured to retract in the front-to-back direction after contacting the downward rotating pressing part, and the limiting end is configured to restrict the downward elastic rotation of the pressing part.

[0009] When the roller seat slides into the steel plate grinding equipment, the rotating plate can contact the roller seat, causing the raised part to rotate elastically upward along the horizontal position, while simultaneously driving the lower pressing part to rotate elastically downward. The lower pressing part then contacts the telescopic end of the head of the elastic telescopic pin, causing the telescopic end to retract in the front-back direction, thereby allowing the roller seat to slide from below the rotating plate to the raised part. Afterward, the rotating plate rotates downward to return to the horizontal state, causing the roller seat to come into contact with the raised part in the opposite direction, creating a reaction force for the lower pressing part to rotate elastically downward. At this time, the head of the elastic telescopic pin extends in the front-back direction and can rotate circumferentially under the action of external force, switching from the telescopic end to the limiting end to restrict the lower pressing part from rotating elastically downward, thereby preventing the roller seat from sliding out of the steel plate grinding equipment in the opposite direction.

[0010] When the roller seat slides out of the steel plate grinding equipment, the head of the elastic telescopic pin can rotate in the opposite direction under the action of external force and switch from the limiting end to the telescopic end to release the restriction of the downward elastic rotation of the pressing part, thereby allowing the roller seat to slide out of the steel plate grinding equipment in the opposite direction.

[0011] Preferably, both the raised and lowered portions of the rotating plate are equipped with springs connected to the track plate. The springs are in a stretched state and provide elastic rotational force and elastic restoring force for the elastic rotation of the rotating plate. The two springs can respectively tighten the raised portion and the lowered portion with the track plate, so that the rotating plate can rotate elastically up and down. When the raised portion is disturbed by an external force and rotates upward, the lowered portion can rotate downward. After the external force is removed, the springs can generate a balanced elastic tension until the rotating plate returns to a horizontal state.

[0012] Preferably, a vertical plate is connected to the raised part, and the bottom of the vertical plate has a V-shaped structure, thus forming two symmetrical first inclined surfaces at the bottom of the vertical plate; the roller seat is provided with a corresponding limiting part, and both first inclined surfaces can contact the limiting part, so that the raised part of the rotating plate can rotate elastically upward along the horizontal position while driving the lower pressing part to rotate elastically downward; the two symmetrical first inclined surfaces face and face away from the steel plate grinding equipment respectively. The first inclined surface facing away from the steel plate grinding equipment can contact the limiting part when the roller seat slides, guiding the roller seat to the first inclined surface facing the steel plate grinding equipment. When the roller seat slides out of the steel plate grinding equipment in the opposite direction, the first inclined surface facing the steel plate grinding equipment can contact the limiting part when the roller seat slides, guiding the roller seat to the first inclined surface facing away from the steel plate grinding equipment. Its structure is simple and ingenious.

[0013] Preferably, the elastic telescopic pin is inserted into a fixed block in the left-right direction, with the head of the elastic telescopic pin protruding from the fixed block; the fixed block has a hollowed-out mounting hole on the end face near the head of the elastic telescopic pin, and a compression spring is fitted inside the mounting hole and sleeved on the elastic telescopic pin. The elastic telescopic pin protrudes outward on the corresponding wall surface to form an abutment ring, and the compression spring is locked between the bottom surface of the mounting hole and the abutment ring, providing elastic telescopic force to the head of the elastic telescopic pin; so that the head of the elastic telescopic pin can freely extend and retract in the front-back direction.

[0014] Preferably, a bushing is provided at the opening of the mounting hole, which is threadedly connected to the inner wall of the mounting hole. The bushing can rotate circumferentially to press against the end face of the abutment ring, thereby changing the distance between the abutment ring and the bottom surface of the mounting hole and adjusting the elastic extension force of the compression spring. This allows the elastic telescopic pin to extend and retract smoothly, avoiding problems such as jamming when the head of the elastic telescopic pin extends and retracts.

[0015] Preferably, the tail of the elastic telescopic pin protrudes from the fixing block, forming a protruding tail end. A lever perpendicular to the elastic telescopic pin is connected to the protruding tail end. When the roller seat is restricted from sliding out of the steel plate grinding equipment, the lever remains vertically downward. At this time, the limiting end of the head of the elastic telescopic pin restricts the downward elastic rotation of the pressing part. When the roller seat slides out of the steel plate grinding equipment, the lever can be manually turned upward half a turn, so that the limiting end of the head of the elastic telescopic pin switches to the telescopic end, thereby releasing the restriction on the downward elastic rotation of the pressing part. The lever is easy to manually turn, so that the telescopic end and the limiting end of the head of the elastic telescopic pin can be quickly switched.

[0016] Preferably, a magnet is provided above the fixed block and connected to the frame. The lever is made of magnetic metal. When the lever is flipped upward, the magnet can attract the lever and provide sliding support for the elastic telescopic pin, so that the elastic telescopic pin can elastically retract in the front-back direction. The design of the magnet ensures that when the elastic telescopic pin extends or retracts, there will be no incorrect switching between the limiting end and the telescopic end of the elastic telescopic pin due to the rotation of the lever, so that the sliding state of the elastic telescopic pin on the roller seat can be stably controlled.

[0017] Preferably, the left and right sides of the end of the lever away from the elastic telescopic pin are milled flat, thereby forming a milled flat part at the end of the lever away from the elastic telescopic pin. When the lever is close to the frame, a turning area that is easy for the hand to put in can be formed between the milled flat part and the frame, thus facilitating manual turning of the lever.

[0018] Preferably, the telescopic end of the elastic telescopic pin head is provided with a downwardly extending contact slope. When the pressing part faces the telescopic end and rotates downward elastically, the contact slope contacts the pressing part, causing the elastic telescopic pin to retract in the front-back direction. When the pressing part faces the limiting end and rotates downward elastically, the outer wall surface of the elastic telescopic pin head abuts against the pressing part, restricting the downward elastic rotation of the pressing part. By setting the contact slope, the upper and lower ends of the elastic telescopic pin head form a limiting function and an unlocking function for the pressing part of the rotating plate. The structure is simple and the design is ingenious.

[0019] Preferably, the limiting mechanism also includes an auxiliary elastic limiting mechanism. This auxiliary elastic limiting mechanism includes a limiting plate that restricts the roller seat from sliding inwards into the steel plate grinding equipment and is in a pre-tensioned elastic state. The limiting plate is connected to the inner side of the symmetrically arranged track plates and has both a limiting position and an auxiliary position. When the roller seat is restricted from sliding out of the steel plate grinding equipment, the limiting plate is in the limiting position. At this time, the limiting plate restricts the roller seat from sliding inwards while also applying a reverse elastic force to the roller seat. When the restriction on the roller seat sliding out of the steel plate grinding equipment is lifted, the limiting plate switches from the limiting position to the auxiliary position. At this time, the limiting plate can release the reverse elastic force to push the roller seat out of the steel plate grinding equipment. The auxiliary elastic limiting mechanism can limit the internal sliding of the roller seat while providing an auxiliary reverse elastic thrust for the roller seat to slide out of the steel plate grinding equipment, thus combining limiting and auxiliary functions with a compact structure.

[0020] Preferably, the inner side of the track plate is provided with a sliding groove extending along the interior of the steel plate grinding equipment, and a slot communicating with the sliding groove is provided below the end of the sliding groove. The front and rear ends of the limiting plate are locked in the corresponding slots. A triggering inclined surface extending upward is connected between the slot and the end of the sliding groove. When the roller seat slides into the steel plate grinding equipment, the roller seat pushes the limiting plate, causing the front and rear ends of the limiting plate to slide upward along the triggering inclined surface into the sliding groove, so that the limiting plate enters the limiting position. At this time, the roller seat is restricted from sliding by the elastic switch mechanism and the limiting plate, and remains stationary on the track plate. When the roller seat is released from the restriction of sliding out of the steel plate grinding equipment, the limiting plate slides in the opposite direction in the sliding groove, so that the limiting plate switches from the limiting position to the auxiliary position. After the limiting plate is pushed and pulled by the roller seat, the triggering inclined surface can provide a guiding effect, so that the front and rear ends of the limiting plate move upward into the sliding groove. At the same time as releasing the locking state in the slot, a reverse elastic force is applied to the roller seat. The structure is simple and ingenious.

[0021] Preferably, a lug extends downward from the position of the track plate away from the limiting plate. An auxiliary push spring is connected between the lug and the limiting plate. The auxiliary push spring is in a stretched state, so that the limiting plate is in an elastic pre-tightened state. When the limiting plate slides in the reverse direction in the groove, the auxiliary push spring switches from the stretched state to the reset state to release the reverse elastic force on the roller seat. The auxiliary push spring can store the sliding elastic force for the roller seat to slide in the reverse direction when the roller seat is stationary, and release it when the roller seat slides out, so as to form an auxiliary pushing effect on the roller seat to slide out, making the roller seat slide in the reverse direction more effortless.

[0022] The principle of the present invention, which adopts the above technical solution, is as follows:

[0023] The present invention first provides a limiting mechanism, which provides an elastic switch mechanism below the pressing part of the rotating plate in the elastic swing mechanism, and uses the elastic switch mechanism to limit or unlock the elastic rotation trend of the pressing part, so as to control the lifting part of the rotating plate to cooperate or separate from the roller seat.

[0024] The beneficial effects of the present invention, which adopts the above technical solution, are as follows:

[0025] When controlling the reverse sliding state of the roller seat, it is only necessary to rotate the elastic telescopic pin to limit and contact the reverse sliding trend of the roller seat. Since the elastic switch mechanism does not contact the roller seat, it does not require much force, thus reducing the difficulty of operating the limit mechanism.

[0026] When the raised part of the rotating plate comes into contact with the roller seat in the opposite direction, it will apply an upward elastic rotational force to the raised part. The limiting mechanism uses this force to make the roller seat move away from the raised part when it is limited in the opposite direction. When the roller seat slides out in the opposite direction, there is no need to manually apply rotational force to the rotating plate, which avoids deformation of the rotating plate when it is subjected to a large force, ensures the structural strength of the rotating plate, and improves the service life of the limiting plate. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the roller changing car.

[0028] Figure 2 This is a schematic diagram of the roller changing car from another perspective.

[0029] Figure 3 This is an enlarged view of the first inclined surface contacting the roller seat in the opposite direction.

[0030] Figure 4 This is an enlarged view of the roller seat in contact with the raised part on the rotating plate;

[0031] Figure 5 The enlarged cross-sectional view shows the joints between the first brush roller bracket and the second brush roller bracket and the slide bar support.

[0032] Figure 6 This is a schematic diagram of the structure of the first brush roller support;

[0033] Figure 7 This is a schematic diagram of the limiting track structure;

[0034] Figure 8 This is a structural diagram showing the location of the insertion post;

[0035] Figure 9 This is a top view of the roller holder;

[0036] Figure 10 The first and second brush roller supports are cross-sectional views of the points where they engage with the horizontal slide bar.

[0037] Figure 11 This is a side view of the roller holder;

[0038] Figure 12a This is a schematic diagram showing the engagement of the hook and nut before the brush roller disengages from the clamping roller mechanism.

[0039] Figure 12b This is a schematic diagram illustrating the principle of the hook and nut engaging to disengage the brush roller from the clamping roller mechanism.

[0040] Figure 13a This is a schematic diagram showing the limiting plate being inserted into the slot.

[0041] Figure 13b This is a schematic diagram showing the limiting plate sliding from the slot to the end of the slot;

[0042] Figure 13c This is a schematic diagram of the limiting plate sliding in the opposite direction along the groove;

[0043] Figure 14 This is a cross-sectional view of the flexible switch mechanism;

[0044] Figure 15 This is an exploded view of the flexible switch mechanism.

[0045] Figure 16 A schematic diagram of the levering area formed between the milled flat section and the machine frame;

[0046] The attached figures are labeled as follows: 1-Traveling mechanism, 2-Roller seat, 3-Limiting rail, 4-Steel plate grinding equipment, 11-High-position support frame, 12-Low-position support frame, 13-Rotating wheel, 14-Handle, 15-Overlapping plate, 16-Insertion post, 111-Tethering handle, 21-Base, 22-Horizontal slide bar, 23-Second brush roller bracket, 24-Handle, 25-Cylinder, 26-Supporting rail, 27-First brush roller bracket, 28-Nut, 29-Roller, 211-Slide bar support, 212-Copper sleeve, 213-Limiting end cap, 2 14-Buffer pad, 215-Sealing ring, 216-Expansion sleeve, 217-Double locking assembly, 217a-Retaining ring, 217b-Locking end cap, 218-Relief hole, 219-Strip body, 231-Threaded connection hole, 232-Pan block, 233-Mounting hole, 241-Side bracket, 242-Moveable clearance area, 243-Limiting part, 244-Extension part, 251-Telescopic rod, 252-Adapter, 253-Adjusting nut, 271-Locking hole, 271a-Screw hole, 272-Removal hole, 273-Through hole Hole, 274-Insertion hole, 275-Connecting threaded hole, 276-L-shaped locking block, 276a-First guide slope, 277-First clamping part, 278-Second clamping part, 279-Elastic buffer column, 31-Trajectory plate, 32-Elastic swing mechanism, 33-Elastic auxiliary limiting mechanism, 34-Auxiliary push spring, 35-Internal connecting seat, 36-Ear plate, 37-Busset, 321-Fixing block, 321a-Modible clearance groove, 321b-Lever moving groove, 321c-Mounting hole, 322-Telescopic column, 32 2a-Elastic telescopic pin, 322b-Lever, 322c-Abutment ring, 322d-Milled flat section, 323-Hook bolt, 324-Spring, 325-Rotating shaft, 326-Rotating plate, 327-Compression spring, 328-Limiting block, 329-First inclined surface, 331-Limiting plate, 332-Slide groove, 332a-Slot, 332b-Triggering inclined surface, 333-Sliding column, 334-Hook column, 371-Actuating support foot, a-Rail, b-L-shaped gap, c-Socket, d-Manual valve, f-Magnet, g-Contact inclined surface, h-Actuating area, s-Upright plate. Detailed Implementation

[0047] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0048] In the description of this invention, the term "at least one" means one or more, unless otherwise expressly defined. The terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0050] The specific implementation methods of this invention are as follows:

[0051] like Figure 1-16 As shown, this embodiment provides a limiting mechanism, which is set between the frame of the steel plate grinding and brushing equipment 4 and the track plate 31 symmetrically arranged front and back and extending in the left and right direction. It is used to control the movement state of the roller seat 2 that slides into the steel plate grinding and brushing equipment 4. The roller seat 2 is set on a roller changing car, which is usually used to replace the brush roller inside the steel plate grinding and brushing equipment 4. It includes a roller seat 2 that can move left and right and a traveling mechanism 1 that can move back and forth. The roller seat 2 is arranged above the traveling mechanism 1 and can move in the back and forth direction under the drive of the traveling mechanism 1. The roller seat 2 includes a base 21, which is a support member of the roller seat 2. The base 21 is a box-shaped structure with an open top and is manufactured by welding. In order to reduce the weight of the base 21, the sealing plate at the bottom of the base 21 is provided with a through-hole 218, making the structure of the base 21 lighter.

[0052] Furthermore, such as Figure 1-2 As shown, in order to facilitate manual control of the left and right moving roller seat 2, a handle 24 is connected to the left or right end of the base 21, and a roller receiving mechanism is connected to the upper end of the base 21. The handle 24 can drive the base 21 and the roller receiving mechanism to move synchronously in the left and right direction when manually pushed or pulled. Specifically, the roller receiving mechanism includes a roller receiving assembly and a drive mechanism. The drive mechanism is connected to the roller receiving assembly and can drive the roller receiving assembly to slide in the left and right direction by its own extension and retraction.

[0053] Furthermore, the receiving roller assembly includes a brush roller support assembly and a sliding rod assembly that can slide left and right. The brush roller support assembly is the receiving part of the brush roller and can move left and right with the sliding rod assembly. The sliding rod assembly includes horizontal sliding rods 22 symmetrically arranged at the upper end of the base 21. The upper end of the base 21 is provided with a sliding support assembly symmetrically arranged at the upper end. The sliding support assembly includes two sliding rod supports 211 arranged in the left and right direction. The horizontal sliding rods 22 are inserted through the two sliding rod supports 211 and can slide in the left and right direction. The sliding rod assembly is equivalent to the support guide rail for the left and right movement of the brush roller support assembly on the roller seat 2. Compared with the ordinary roller changing car that sets the guide rail at the bottom of the base, in this embodiment, the sliding rod assembly is used to support the left and right movement of the brush roller support assembly. The lever assembly is positioned at the top of the base 21 because when the brush roller falls, there may be a front-to-back position deviation due to roller misalignment, causing the brush roller to impact the brush roller support assembly upon falling. This impact force can be divided into horizontal and vertical forces. If the lever assembly is positioned close to the bottom of the base 21, the horizontal impact force will cause a torsional effect on the bottom guide rail, which can easily lead to deformation at the joint between the brush roller support assembly and the lever assembly. By positioning the lever assembly at the top of the base 21, the lever arm of the horizontal impact force is reduced, protecting the structural strength of the brush roller support assembly and the lever assembly and improving their service life.

[0054] Furthermore, a brush roller bracket assembly is sleeved on the slide rod assembly. The brush roller bracket assembly includes a first brush roller bracket 27 and a second brush roller bracket 23 aligned left and right. These two brackets are downwardly protruding semi-circular ring structures. The first brush roller bracket 27 and the second brush roller bracket 23 are fixed on the slide rod assembly and can move synchronously in the left and right directions under the action of external force to achieve rapid replacement of the brush roller. In order to make the sliding stroke of the brush roller bracket assembly in the left and right directions greater, the first brush roller bracket 27 and the second brush roller bracket 23 are staggered from the two slide rod supports 211 in the left and right directions. This is because compared with the brush roller bracket assembly located between the sliding support assemblies, the first brush roller bracket 27 and the second brush roller bracket 23 staggered from the sliding support assemblies can not only avoid the brush roller bracket assembly from colliding with the slide rod supports 211 when sliding, but also widen the sliding space of the brush roller bracket assembly in the left and right directions, making brush roller replacement more flexible and efficient.

[0055] Furthermore, such as Figure 5 As shown, the slide rod support 211 has a bearing hole extending in the left-right direction. The horizontal slide rod 22 passes through this bearing hole. To prevent excessive wear when the horizontal slide rod 22 slides on the slide rod support 211, a copper sleeve 212 is installed in the bearing hole. Limiting end caps 213 are connected to both ends of the slide rod support 211 to restrict the axial movement of the copper sleeve 212. The soft copper sleeve 212 can separate the contacting slide rod support 211 and the horizontal slide rod 22, preventing them from contacting and wearing each other. This improves the service life of the slide rod support 211 and the horizontal slide rod 22.

[0056] Furthermore, such as Figure 5 , Figure 10 As shown, if the axial length of the roller seat 2 is too long, when the brush roller slides axially on the roller seat 2, it may cause the brush roller to tip over in the left and right directions on the roller seat 2. Therefore, side brackets 241 are symmetrically connected to the left or right end of the base 21. The side brackets 241 are the supporting carriers of the handle 24. The end of the side bracket 241 away from the base 21 extends upward, forming an extension 244 on the side bracket 241. The top of the extension 244 is at the same height as the top of the slide bar support 211. The slide bar support 211, the side bracket 241 and its own extension 244 form a rectangular movable clearance area 2. 42. The horizontal slide bar 22 can slide left and right within the movable clearance area 242. The drive mechanism spans the movable clearance area 242, with one end attached to the top of the extension 244 and the other end attached to the top of the slide bar support 211 near the second brush roller support 23, and connected to the upper end of the second brush roller support 23, so as to drive the brush roller support assembly and the horizontal slide bar 22 to move synchronously in the left and right directions. This bridge-type drive mechanism can drive the second brush roller support 23 to drive the receiving roller assembly to slide in the left and right directions, and also saves the axial space of the roller seat 2, so that the receiving roller assembly has good stability when sliding in the left and right directions on the roller seat 2.

[0057] Furthermore, to ensure the sliding speed of the roller assembly in the left-right direction, the drive mechanism is typically a symmetrically arranged cylinder 25. The cylinder 25 includes a telescopic rod 251 that can extend and retract left and right. Since neither the telescopic rod 251 nor the second brush roller bracket 23 can rotate circumferentially on the roller seat 2, it is difficult to directly connect the telescopic rod 251 to the second brush roller bracket 23 via threads. Therefore, an adapter 252 is provided between the telescopic rod 251 and the second brush roller bracket 23. The head of the telescopic rod 251 has a threaded structure, and a connecting ear extends from the upper end of the second brush roller bracket 23. The connecting ear... A threaded connection hole 231 should be provided. The adapter 252 is connected to the head of the telescopic rod 251 and the threaded connection hole 231 on the second brush roller bracket 23 by a threaded connection. This allows the telescopic rod 251 and the second brush roller bracket 23 to be connected together. The adapter 252 compensates for the distance between the telescopic rod of the cylinder 25 and the second brush roller bracket 23, so that the cylinder 25 can be connected to the second brush roller bracket 23. The threaded connection also makes it easy for the adapter 252 to adjust the distance between the adapter 252 and the second brush roller bracket 23 or the telescopic rod 251 by its own circumferential rotation.

[0058] Furthermore, the adapter 252 and the telescopic rod 251 are connected and adjusted by the adjusting nut 253. The adjusting nut 253 can lock the adapter 252 and the telescopic rod 251, and can also change the fit length between the adjusting nut 253 and the telescopic rod 251 by rotating the adjusting nut 253, thereby adjusting the fit length between the adapter 252, the telescopic rod 251 and the threaded connection hole 231, so that the connection effect between the second brush roller bracket 23 and the telescopic rod 251 is optimal.

[0059] Furthermore, such as Figure 6 , Figure 11 As shown, the inner walls of the first brush roller bracket 27 and the second brush roller bracket 23 are symmetrically provided with buffer structures to reduce the impact of the brush roller. The buffer structure includes symmetrically arranged but not through insertion holes 274 on the inner wall of the first brush roller bracket 27 or the second brush roller bracket 23. An elastic buffer post 279 protruding from the inner wall is provided in the insertion hole 274. In order to prevent the elastic buffer post 279 from coming out of the insertion hole 274, the elastic buffer post 279 and the insertion hole 274 are interference fit. When the brush roller falls on the first brush roller bracket 27 and the second brush roller bracket 23, the part of the elastic buffer post 279 protruding from the inner wall contacts the brush roller and generates elastic deformation, thereby buffering the impact force of the brush roller on the brush roller bracket assembly.

[0060] Furthermore, after repeated use, the elastic buffer post 279 may become excessively deformed, necessitating its replacement. To facilitate removal, a removal hole 272 concentric with the insertion hole 274 is provided. The diameter of the removal hole 272 is smaller than that of the insertion hole 274, preventing the elastic buffer post 279 from detaching from the removal hole 272. The removal hole 272 communicates with the outer wall of either the first brush roller bracket 27 or the second brush roller bracket 23. When replacement is required, a screwdriver or other cylindrical object can be inserted into the removal hole 272 to push the elastic buffer post 279 out of the insertion hole 274, and then a new elastic buffer post 279 can be inserted into the insertion hole 274. This completes the replacement of the elastic buffer post 279.

[0061] Furthermore, since the brush roller support assembly is subjected to repeated impacts from the brush roller during multiple uses, structural problems such as deformation or cracking may occur. Therefore, considering the replacement and maintenance of the brush roller support assembly, the first brush roller support 27 and the second brush roller support 23 are not welded to the horizontal slide bar 22, but are locked and fixed to the horizontal slide bar 22. Specifically, the first and second brush roller supports 27 and 23 of the semi-circular ring extend outwards on the horizontal plane at both ends, forming two symmetrical mounting parts. The mounting parts are provided with through holes 273, the axis of which extends in the left and right direction. The horizontal slide bar 22 passes through the first brush roller support 27 and 23 in the left and right directions. The first brush roller bracket 27 and the second brush roller bracket 23 are in the through hole 273 on the same side, and the outer diameter of the horizontal slide rod 22 matches the diameter of the through hole 273. This allows the horizontal slide rod 22 to pass through the first brush roller bracket 27 and the second brush roller bracket 23 while restricting the first brush roller bracket 27 and the second brush roller bracket 23 from jumping radially on the horizontal slide rod 22. At this time, the brush roller bracket assembly can slide on the horizontal slide rod 22 in the left and right direction to adjust the distance between the first brush roller bracket 27 and the second brush roller bracket 23 until the distance between them matches the length of the brush roller to be replaced. Then, the first brush roller bracket 27 and the second brush roller bracket 23 can be locked and fixed in the axial direction.

[0062] Furthermore, such as Figure 5-6 As shown, both the first brush roller bracket 27 and the second brush roller bracket 23 have symmetrically arranged threaded connection holes 275 along the front-back direction at their upper ends. L-shaped locking blocks 276 are connected to the corresponding positions of the threaded connection holes 275. The L-shaped locking blocks 276 are limiters for the brush rollers. Considering that they will be impacted by the brush rollers during multiple roller changes and are prone to deformation, the L-shaped locking blocks 276 are also detachably connected to the brush roller bracket assembly. Specifically, the L-shaped locking blocks 276 include two mutually perpendicular legs extending from the horizontal plane, with a chamfered first guide at the upper end of each leg. The inclined surface 276a, when the brush roller falls, can contact the end of the brush roller shaft to form a guiding effect, so that the end of the brush roller shaft is locked in the enclosure of the L-shaped locking block 276; the two support legs extend in the front-back and left-right directions respectively, and the multiple support legs on the first brush roller bracket 27 and the second brush roller bracket 23 form four limiting points in the front-back and left-right directions on the brush roller support assembly, thereby limiting the brush roller falling on the brush roller bracket assembly in the front-back and left-right directions, preventing the brush roller from moving on the brush roller bracket assembly, and ensuring the stability of the brush roller.

[0063] Furthermore, considering the replacement and maintenance of the brush roller bracket assembly, the first brush roller bracket 27 and the second brush roller bracket 23 are not welded to the horizontal slide bar 22, but are locked to the horizontal slide bar 22 through different locking methods and structures. This allows the brush roller bracket assembly and the horizontal slide bar 22 to move synchronously in the left and right directions under external force after being connected as a whole. Specifically, the first brush roller bracket 27 is provided with an L-shaped gap b that runs through in the left and right direction. The L-shaped gap b communicates with the through hole 273. The L-shaped gap b divides the first brush roller bracket 27 into a first clamp that can move closer or further away from each other. The clamping part 277 and the second clamping part 278 are provided. The first clamping part 277 is provided with a locking hole 271 that runs vertically through it. The second clamping part 278 is provided with a corresponding screw hole 271a. The screw passes through the locking hole 271 and is screwed into the screw hole 271a, so that the first clamping part 277 and the second clamping part 278 are brought close to each other to clamp the horizontal slide bar 22, thereby keeping the first brush roller bracket 27 locked and fixed on the horizontal slide bar 22. By adjusting the tightness of the screw, the clamping force between the first clamping part 277 and the second clamping part 278 is adjusted to control the degree of locking between the first brush roller bracket 27 and the horizontal slide bar 22.

[0064] Furthermore, since the connecting lug at the upper end of the second brush roller bracket 23 is connected to the telescopic rod 251 of the drive mechanism, and the connecting lug occupies the top space of the second brush roller bracket 23, the second brush roller bracket 23 no longer uses a clamping structure for fixation. Specifically, the second brush roller bracket 23 includes an insertion part that cooperates with the horizontal slide rod 22. The insertion part is partially hollowed out to form a mounting hole 233 surrounding the horizontal slide rod 22, and the non-hollowed-out part forms a sleeve part that tightly surrounds the horizontal slide rod 22; the mounting... An expansion sleeve 216 is provided inside the hole 233. The expansion sleeve 216 abuts against the limiting end cap 213 at the opening of the mounting hole 233, so that it is axially fixed inside the mounting hole 233. The expansion sleeve 216 keeps the second brush roller bracket 23 circumferentially locked on the horizontal slide bar 22. The expansion sleeve 216 is in contact with the horizontal slide bar 22 and the second brush roller bracket 23 at the same time, which can ensure that the second brush roller bracket 23 is in a locked state on the horizontal slide bar 22, so that the second brush roller bracket 23 and the horizontal slide bar 22 are connected as one unit.

[0065] Furthermore, since the expansion sleeve 216 contacts both the horizontal slide bar 22 and the second brush roller bracket 23, it can ensure the circumferential fixation of the second brush roller bracket 23 on the horizontal slide bar 22 while also providing some axial locking force. However, after repeated use, the outer wall surface of the expansion sleeve 216, due to its taut state with the outer walls of the second brush roller bracket 23 and the horizontal slide bar 22, inevitably experiences wear or slight extrusion deformation, thus affecting the service life of the expansion sleeve 216 and the locking effect of the second brush roller bracket 23. Therefore, a double locking assembly 217 is provided on the outer end face of the sleeve portion, which is in close contact with it. The double locking assembly 217 includes a retaining ring 217a and a locking end cap 217b. a) is axially fixed to the horizontal slide bar 22; the locking end cap 217b is connected to the corresponding end face of the sleeve and presses the retaining ring 217a; so that the double locking assembly 217 forms an axial locking fixation on the horizontal slide bar 22 for the second brush roller bracket 23; the double locking assembly 217 can cooperate with the expansion sleeve 216 to form a double locking of the second brush roller bracket 23 in both the axial and circumferential directions; and the double locking assembly 217 can distribute the remaining axial locking force required by the second brush roller bracket 23 while the expansion sleeve 216 provides part of the axial locking force, so as to avoid the expansion sleeve 216 from deforming its own structure due to excessive expansion force, thereby making the locking effect of the second brush roller bracket 23 more stable.

[0066] Furthermore, buffer pads 214 are fixed to the limiting end caps 213 at both ends of the slide rod support 211. The buffer pads 214 are elastic rubber pads. When the brush roller bracket assembly slides in the left and right direction and approaches the limiting end caps on the slide rod support 211, the buffer pads 214 contact the first brush roller bracket 27 or the second brush roller bracket 23 and form a buffer to avoid the brush roller bracket assembly from colliding with the limiting end caps 213.

[0067] Furthermore, the limiting end cap 213 and the locking end cap 217b are provided with a through sealing hole in the middle. The horizontal slide rod 22 passes through the sealing hole. A sealing ring 215 is provided in the sealing hole. The sealing ring 215 is usually an oil seal. The sealing ring 215 is located between the horizontal slide rod 22 and the limiting end cap. When the horizontal slide rod 22 and the brush roller bracket assembly slide synchronously in the left and right direction, the sealing ring 215 can block sewage and iron filings from the outside, preventing sewage or iron filings from affecting the sealing performance of the brush roller bracket assembly or the slide rod support 211, and ensuring the smooth sliding of the slide rod 211.

[0068] Furthermore, the walking mechanism 1 is symmetrically provided with support rails 26 along the front-back direction above it, and rollers 29 are provided on the front and back sides of the base 21 respectively. The rollers 29 are always in contact with the support rails 26 and drive the roller seat 2 to move in the left-right direction on the support rails 26 by rotating on their own. Compared with the guide rail design, the design of the rollers 29 can change the sliding friction between the roller seat 2 and the support rails 26 into rolling friction, which generates less friction and makes the sliding process of the roller seat 2 in the left-right direction smoother.

[0069] Furthermore, such as Figure 3-7 As shown, in order to keep the roller seat 2 fixed when receiving the roller, the steel plate grinding equipment 4 has a pre-set limiting track 3 inside. The limiting track 3 includes a track plate 31 symmetrically arranged front and rear. The track plate 31 inside the steel plate grinding equipment 4 is connected to the frame through an internal connecting seat 35 and is in a docking state with the support track 26 on the roller seat 2. The track plate 31 is provided with a limiting mechanism, which includes an elastic swing mechanism 32 placed at the entrance of the steel plate grinding equipment 4. The elastic swing mechanism 32 includes a rotating plate 326 in a horizontal position. The rotating plate 326 extends in the left and right direction, and the middle part of the rotating plate 326 is connected to the frame of the steel plate grinding equipment 4 through a rotating shaft 325. It can use the rotating shaft 325 in its middle position as a fulcrum to elastically rotate up and down in the horizontal position. The rotating plate 326 includes a raised part facing the steel plate grinding equipment 4 and a pressed part facing away from the steel plate grinding equipment 4.

[0070] Furthermore, to enable the rotating plate 326 to rotate elastically up and down, springs 324 connected to the track plate 31 are provided on both the raised and lowered portions of the rotating plate 326. Two sets of hook bolts 323 are correspondingly provided on the track plate 31 and the frame at the raised and lowered portions. The springs 324 are connected to the corresponding hook bolts 323 and are in a stretched state, providing elastic rotational force and elastic restoring force for the elastic rotation of the rotating plate 326 up and down. The two springs 324 can respectively tighten the raised portion and the lowered portion with the track plate, forming an elastic device similar to a balance structure, so that the rotating plate 326 can rotate elastically up and down. When the raised portion is disturbed by external force and rotates upward, the lowered portion can rotate downward. After the external force is removed, the springs 324 can generate a balanced elastic tension until the rotating plate 326 returns to a horizontal state.

[0071] Furthermore, the limiting mechanism also includes an elastic switch mechanism, which includes an elastic telescopic pin 322a located below the pressing part and extending in the front-back direction. The elastic telescopic pin 322a can elastically extend and retract in the front-back direction and can rotate circumferentially along its own axis. The head of the elastic telescopic pin 322a is provided with an upper and lower opposing telescopic end and a limiting end. The telescopic end of the head of the elastic telescopic pin 322a contacts the pressing part. When the pressing part elastically rotates downward, the telescopic end is configured to retract in the front-back direction after contacting the downward rotating pressing part, and the limiting end is configured to restrict the downward elastic rotation of the pressing part. Specifically, the telescopic end of the head of the elastic telescopic pin 322a is provided with a downwardly extending contact slope g. When the pressing part faces the telescopic end and rotates downward elastically, the contact slope g contacts the pressing part, causing the elastic telescopic pin 322a to retract in the front-back direction. When the pressing part faces the limiting end and rotates downward elastically, the outer wall surface of the head of the elastic telescopic pin 322a abuts against the pressing part, restricting the downward elastic rotation of the pressing part. By setting the contact slope g, the upper and lower ends of the head of the elastic telescopic pin 322a form a limiting function and an unlocking function for the pressing part of the rotating plate 326. The structure is simple and the design is ingenious.

[0072] Furthermore, as the roller 29 on the roller seat 2 leaves the support rail 26, it slides to the upper end of the corresponding track plate 31. The elastic swing mechanism 32 works in conjunction with the elastic switch mechanism to limit the reverse sliding of the roller seat 2 as follows: When the roller seat 2 slides into the steel plate grinding equipment 4, the rotating plate 326 can contact the roller seat 2, causing the raised part to elastically rotate upward along the horizontal position while simultaneously driving the lower pressing part to elastically rotate downward, and causing the lower pressing part to contact the telescopic end of the head of the elastic telescopic pin 322a, causing the telescopic end to retract in the front-back direction and contact the end face of the rotating plate 326 in the front-back direction, thereby... The roller seat 2 slides from below the rotating plate 326 to the raised part. Then, under the elastic force of the springs 324 at both ends, the rotating plate 326 rotates downward to reset to the horizontal state, so that the roller seat 2 and the raised part come into contact in opposite directions and form a downward elastic rotation reaction force on the pressing part. At this time, the head of the elastic telescopic pin 322a separates from the end face of the rotating plate 326 in the front-back direction, so that the head of the elastic telescopic pin 322a extends in the front-back direction and can rotate circumferentially under the action of external force and switch from the telescopic end to the limiting end to restrict the downward elastic rotation of the pressing part, thereby restricting the roller seat 2 from sliding out of the steel plate grinding equipment 4 in the opposite direction.

[0073] Furthermore, when the roller seat 2 slides out of the steel plate grinding equipment 4, the head of the elastic telescopic pin 322a can rotate in the opposite direction under the action of external force and switch from the limiting end to the telescopic end to release the restriction of the downward elastic rotation of the pressing part, thereby allowing the roller seat 2 to slide out of the steel plate grinding equipment 4 in the opposite direction.

[0074] Furthermore, a vertical plate 328 is connected to the raised portion, and the bottom of the vertical plate 328 has a V-shaped structure, thus forming two symmetrical first inclined surfaces 329 at the bottom of the vertical plate 328; bearing rods are symmetrically provided on the left and right sides of the base 21 on the roller seat 2, and corresponding circumferential rotation limiting parts 243 are provided on the bearing rods. Both first inclined surfaces 329 can contact the limiting parts 243, so that the raised portion of the rotating plate 326 elastically rotates upward along the horizontal position while driving the lower pressing portion to elastically rotate downward; the two symmetrical first inclined surfaces 329 face and back from the steel plate grinding equipment respectively, and the back... When the roller seat 2 slides, the first inclined surface 329 of the steel plate grinding device can contact the limiting part 243, guiding the roller seat 2 to face the first inclined surface 329 of the steel plate grinding device 4. When the roller seat 2 slides out of the steel plate grinding device 4 in the opposite direction, the first inclined surface 329 facing the steel plate grinding device abuts against the limiting part 243. When the elastic telescopic pin 322a switches to the telescopic end and contacts the rotation restriction of the pressing part, the roller seat 2 can slide in the opposite direction and contact the limiting part 243, guiding the roller seat 2 to face the first inclined surface 329 away from the steel plate grinding device 4, so that the roller seat 2 slides out of the steel plate grinding device 4 in the opposite direction.

[0075] Furthermore, the elastic telescopic pin 322a is inserted into a fixed block 321 in the left-right direction, with the head of the elastic telescopic pin 322a protruding from the fixed block 321. The fixed block 321 has a hollowed-out mounting hole 321c on the end face near the head of the elastic telescopic pin 322a. In order for the head of the elastic telescopic pin 322a to elastically extend and retract in the front-back direction, a compression spring 327 is provided in the mounting hole 321c and fitted onto the elastic telescopic pin 322a. The elastic telescopic pin 322a protrudes outward on the corresponding wall surface to form an abutment ring 322c. The compression spring 327 is engaged between the bottom surface of the mounting hole 321c and the abutment ring 322c, providing elastic extension and retraction force for the head of the elastic telescopic pin 322a, so that the head of the elastic telescopic pin 322a can freely extend and retract in the front-back direction.

[0076] Furthermore, a bushing 37 is provided at the opening of the mounting hole 321c, which is threadedly connected to the inner wall of the mounting hole 321c. The end face of the bushing 37 facing away from the abutment ring 322c has two protruding actuating feet 371. The bushing 37 can be rotated circumferentially by hand by applying force to the actuating feet 371, and then press against the end face of the abutment ring 322c, changing the fit length between the bushing 37 and the opening of the mounting hole 321c, thereby changing the distance between the abutment ring 322c and the bottom surface of the mounting hole 321c, so as to adjust the elastic extension force of the compression spring 327; so that the elastic telescopic pin 322a can extend and retract smoothly, avoiding problems such as jamming when the head of the elastic telescopic pin 322a extends and retracts.

[0077] Furthermore, the tail of the elastic telescopic pin 322a protrudes from the fixing block 321, forming a tail protrusion end. The fixing block 321 is provided with a movable clearance area 321a corresponding to the tail protrusion end. A lever 322b perpendicular to the elastic telescopic pin 322a is connected to the tail protrusion end. The lever 322b can be vertically connected to the tail protrusion end of the elastic telescopic pin 322a by welding or threading after the elastic telescopic pin 322a protrudes to the movable clearance area 321a, so that the two become a single telescopic rod 322. When the roller... When the roller seat 2 is restricted from sliding out of the steel plate grinding equipment 4, the lever 322b remains vertically downward. At this time, the limiting end of the head of the elastic telescopic pin 322a restricts the downward elastic rotation of the pressing part. When the roller seat 2 slides out of the steel plate grinding equipment 4, the lever 322b can be turned upward half a turn by hand, so that the limiting end of the head of the elastic telescopic pin 322a switches to the telescopic end, thereby releasing the restriction on the downward elastic rotation of the pressing part. The lever 322b can be easily turned by hand, so that the telescopic end and the limiting end of the head of the elastic telescopic pin 322a can be quickly switched.

[0078] Furthermore, the end face of the fixed block 321 facing the tail protrusion end is provided with a lever moving groove 321b that communicates with the movable avoidance area 321a. When the hand acts on the lever support 371, the lever 322b can be pulled to pass through the lever moving groove 321b and abut against the fixed block 321. At this time, the head of the elastic telescopic pin 322a retracts in the front-back direction and remains stationary, making it easier for the hand to act on the lever support 371. After adjustment, the lever 321b can be rotated and passed through the lever moving groove 321b again, so that the head of the elastic telescopic pin 322a extends out in the front-back direction again.

[0079] Furthermore, when the telescopic end of the elastic telescopic pin 322 retracts in the front-to-back direction in the face of the pressing part, the lever 322b may flip downwards due to gravity, causing an unexpected switching between the telescopic end and the limiting end of the elastic telescopic pin 322. Therefore, a magnet f connected to the frame is provided above the fixed block 321. The lever 322b is made of magnetic metal. When the lever 322b flips upwards, the magnet f can attract the lever 322b, providing sliding support for the elastic telescopic pin 322a, allowing the elastic telescopic pin 322a to retract elastically in the front-to-back direction. The design of the magnet f ensures that when the elastic telescopic pin 322a extends or retracts, there will be no erroneous switching between the limiting end and the telescopic end of the elastic telescopic pin 322a caused by the rotation of the lever 322b, thus providing stable control of the sliding state of the elastic telescopic pin 322a over the roller seat 2.

[0080] Furthermore, the left and right sides of the end of the lever 322b away from the elastic telescopic pin 322a are milled flat, thereby forming a milled portion 322d at the end of the lever 322b away from the elastic telescopic pin 322a. When the lever 322b is close to the frame, a turning area h that is easy for the hand to put in can be formed between the milled portion 322d and the frame; thus facilitating manual turning of the lever 322b.

[0081] Furthermore, the elastic swing mechanism 32 and the elastic switch mechanism can limit the reverse sliding of the roller seat 2. However, in order to keep the roller seat 2 fixed inside the steel plate grinding equipment 4, it is also necessary to restrict the continuous sliding of the roller seat 2 into the steel plate grinding equipment 4. Therefore, the limiting mechanism also includes an auxiliary elastic limiting mechanism 33. The auxiliary elastic limiting mechanism 33 includes a limiting plate 331 that restricts the sliding of the roller seat 2 into the steel plate grinding equipment 4 and is in an elastic pre-tightened state. The limiting plate 331 is connected to the inner side of the front and rear symmetrical track plates 31 and has a limiting position and an auxiliary position. The head of the roller seat 2 entering the steel plate grinding equipment 4 is provided with a corresponding upright plate s. When the roller seat 2 is restricted to slide out of the steel plate grinding equipment 4 in the reverse direction, the upright plate s pushes the limiting plate 33 inward. 1. The limiting plate 331 is placed in the limiting position. At this time, the limiting plate 331 restricts the roller seat 2 from sliding inward and also applies a reverse elastic force to the roller seat 2. However, due to the reverse sliding restriction of the roller seat 2 by the elastic switch mechanism, the reverse elastic force cannot be released. When the roller seat 2 is released from the restriction of sliding out of the steel plate grinding equipment 4, the limiting plate 331 switches from the limiting position to the auxiliary position. It is only necessary to gently pull the roller seat 2 with the handle 24. At this time, the limiting plate 331 can release the reverse elastic force to push the roller seat 2 to slide out of the steel plate grinding equipment 4. In other words, the auxiliary elastic limiting mechanism 33 can limit the internal sliding of the roller seat 2 while providing an auxiliary reverse elastic thrust for the roller seat 2 to slide out of the steel plate grinding equipment 4. It has both limiting and auxiliary functions and has a compact structure.

[0082] Furthermore, the switching between the limiting position and the auxiliary position of the limiting plate 331 is achieved through the cooperation of the limiting plate 331 with multiple sliding grooves on the inner side of the track plate 31. Specifically, the track plate 31 is provided with a sliding groove 332 that runs through the left and right direction and extends inside the steel plate grinding device 4. A slot 332a that communicates with the sliding groove 332 is provided below the end of the sliding groove 332. Symmetrical sliding columns 333 extend from the front and rear ends of the limiting plate 331, and the sliding columns 333 are engaged in the corresponding slots 332a. A triggering inclined surface 332b extending obliquely upwards connects the slots 332a and the end of the sliding groove 332. When the roller seat 2 slides into the steel plate grinding device 4, the roller seat 2 pushes the limiting plate 331, driving the front and rear ends of the limiting plate 331... The sliding column 333 slides upward along the triggering inclined surface 332b into the slide groove 332, causing the limiting plate 331 to enter the limiting position. At this time, the roller seat 2 is restricted from sliding by the elastic switch mechanism and the limiting plate 331 and remains stationary on the track plate 31. When the roller seat 2 is released from the restriction of sliding out of the steel plate grinding device 4, the sliding column 333 of the limiting plate 331 slides in the reverse direction in the slide groove 332, causing the limiting plate 331 to switch from the limiting position to the auxiliary position. After the limiting plate 331 is pushed and pulled by the roller seat 2, the sliding column 333 at both ends of the limiting plate 331 can move upward into the slide groove 332 through the guiding effect provided by the triggering inclined surface 332b. At the same time as releasing the locking state in the slot 332a, a reverse elastic force is applied to the roller seat 2. The structure is simple and ingenious.

[0083] Furthermore, a lug 36 extends downward from the track plate 31 away from the limiting plate 331. Hooks 334 are provided on the lower end face of the limiting plate 331 and the lug 36. An auxiliary push spring 34 is connected between the lug 36 and the hooks 334 of the limiting plate 331. The auxiliary push spring 34 is in a stretched state, so that the limiting plate 331 is in an elastic pre-tightened state. When the limiting plate 331 slides in the reverse direction in the slide groove 332, the auxiliary push spring 34 switches from the stretched state to the reset state to release the reverse elastic force on the roller seat 2. The auxiliary push spring 34 can store the sliding elastic force for the roller seat 2 to slide in the reverse direction when the roller seat 2 is stationary, and release it when the roller seat 2 slides out, so as to form an auxiliary pushing effect on the sliding out of the roller seat 2, making the reverse sliding of the roller seat 2 more effortless.

[0084] Furthermore, such as Figure 10As shown, after the brush roller bracket assembly is locked to the horizontal slide bar 22, it can slide in the left and right direction on the slide bar support 211 under the action of the drive mechanism. As the receiving component of the brush roller, the brush roller bracket assembly needs to move left and right to complete the alignment process with the brush roller. If the brush roller bracket assembly is in a sliding state on the roller seat 2, a distance will be generated between the brush roller bracket assembly and the slide bar support 211. This distance can form a lever arm. The weight of the brush roller itself will generate a vertical torsional force on the slide bar support 211 by relying on this lever arm, which can easily cause the structure of the sliding support 211 to deform. Therefore, the slide bar support 211 in the slide bar support assembly alone cannot provide stable support for the brush roller in the sliding state. Therefore, symmetrical and detachable auxiliary support assemblies are connected between the first brush roller bracket 27, the second brush roller bracket 23 and the base 21. The auxiliary support assemblies include those connected to the base 21. The strip 219 at the upper end of the seat 21 and the pad 232 correspondingly connected to the bottom of the first brush roller bracket 27 or the second brush roller bracket 23, when the slide rod assembly drives the brush roller bracket assembly to slide left and right on the slide rod support 211, the pad 232 and the strip 219 are always in contact and relative to each other, so that the auxiliary support assembly and the sliding support assembly provide double support for the first brush roller bracket 27 and the second brush roller bracket 23. When the roller receiving mechanism receives the brush roller and slides in the left and right direction, the auxiliary support assembly and the sliding support assembly can form four support points on the horizontal slide rod for the brush roller bracket assembly and the brush roller in the sliding state, making the brush roller and the brush roller bracket assembly more stable when sliding. This can effectively protect and prevent the brush roller bracket assembly from tipping over when sliding. Moreover, the detachable strip 219 and pad 232 are easy to disassemble and replace, reducing the maintenance cost of the auxiliary support assembly.

[0085] Furthermore, the material of the strip 219 is usually nylon, and the material of the pad 232 is copper alloy. This is because the strip 219 and the pad 232, which slide relative to each other in the left-right direction, are always in contact and rub against each other, so both the strip 219 and the pad 232 are made of wear-resistant materials. Specifically, the working conditions inside the roller seat 2 of the steel plate grinding equipment 4 are harsh, and lubricating oil cannot be added to reduce the wear of the pad 232. If both the strip 219 and the pad 232 are made of copper alloy, then the strip 219 and the pad 232 will wear at the same time, resulting in increased costs. Therefore, when the copper alloy pad 232 and the nylon strip 219 are in contact, the surface of the pad 232 is less prone to wear than the strip 219, thus protecting the pad 232. Even if the nylon strip 219 wears, its material cost is relatively low compared to the copper alloy pad 232, and it will not increase the usage cost of the strip 219.

[0086] The bottom of the traveling mechanism 1 has four rotating wheels 13, and the bottom of the rotating wheels 13 has a steel rail a that cooperates with them. The steel rail a is preset in the front-back direction at the side position of the steel plate grinding equipment 4. The rotating wheels 13 rotate on the upper end of the steel rail a. The steel rail a reduces the friction between the rotating wheels 13 and the ground, so that the traveling mechanism 1 and the roller seat 2 can move smoothly in the front-back direction.

[0087] Furthermore, such as Figure 1-2 As shown, the steel plate grinding and brushing equipment 4 has an upper brush roller and a lower brush roller inside. Therefore, in order to realize the replacement of brush rollers at different positions, the roller changing cart has two high-position support frames 11 and low-position support frames 12 with different heights arranged side by side. Roller seats 2 that can slide left and right are arranged on these two support frames respectively. In this way, the roller changing cart can simultaneously replace the upper brush roller and the lower brush roller through the design of support frames of different heights, thereby improving the efficiency of brush roller replacement.

[0088] Specifically, the steel plate grinding equipment 4 has a self-limiting track 3 inside, which corresponds to the position of the roller seat 2. The self-limiting track 3 is a sliding support for the roller seat 2 inside the steel plate grinding equipment 4. The self-limiting track 3 has a self-limiting mechanism 32 that controls the sliding state of the roller seat 2. When the roller seat 2 slides to the corresponding position inside the steel plate grinding equipment 4 in the left and right direction, the self-limiting mechanism 32 can automatically limit the roller seat 2 from continuing to slide in the left and right direction. The self-limiting track 3 can automatically limit the roller seat 2 when it enters the steel plate grinding equipment 4 to change rollers through the self-limiting mechanism 32, saving the adjustment time of the limiting mechanism, and at the same time keeping the roller seat 2 fixed inside the steel plate grinding equipment 4 for a stable roller changing process.

[0089] Specifically, the handle 24 has a manual valve d connected to the drive mechanism. The manual valve d is connected to the drive mechanism, which is a cylinder 25, via an air pipe (not shown). When changing rollers, the extension rod 251 of the cylinder 25 can be extended and retracted in the left and right direction by moving the manual valve d, so that the roller receiving assembly is aligned vertically with the old brush roller. The manual valve d at the handle 24 is far away from the inside of the steel plate grinding brush equipment 4, and is not easy to come into contact with the grinding wastewater or debris inside the plate grinding brush equipment 4. This allows the manual valve d to be easily operated by hand during the roller changing process to control the drive mechanism, thereby improving the efficiency of the alignment between the roller seat and the brush roller.

[0090] Furthermore, the ends of the horizontal slide bar 22 on both sides protrude from the roller seat 2. To prevent the horizontal slide bar 22 from sliding out of the base 21, nuts 28 are connected to both protruding ends. When the drive mechanism drives the roller assembly to slide left and right, and the left and right ends of the horizontal slide bar 22 are about to slide out of the slide bar support 211 or the brush roller bracket assembly, the nuts 28 abut against the slide bar support 211 or the brush roller bracket assembly to restrict the horizontal slide bar 22 from separating from the slide bar support 211 or the brush roller bracket assembly.

[0091] Specifically, such as Figures 12a-12b As shown, the roller clamping mechanism includes a sliding bearing seat and a fixed bearing seat for clamping the brush roller. The sliding bearing seat can slide in the left and right direction. The specific structure of the roller clamping mechanism is existing technology. For details, please refer to the structural description of the working beam in announcement number CN211103286. The difference is that in this embodiment, the sliding bearing seat has a hook part corresponding to the position of the nut 28. When the sliding bearing seat disengages from the old brush roller in the left and right direction, the hook part pulls the nut 28 near the position of the first brush roller bracket 27, so that the horizontal slide rod 22 drives the old brush roller to separate from the fixed bearing seat. The nut 28 near the position of the first brush roller bracket 27 not only restricts the horizontal slide rod 22 from sliding out of the roller seat 2, but also serves as the connecting mechanism of the roller clamping mechanism. By pulling the corresponding nut 28 through the hook part, the two shaft ends of the brush roller can be quickly disengaged from the roller clamping mechanism and fall smoothly onto the brush roller bracket assembly.

[0092] Furthermore, such as Figure 8 As shown, the front end of the traveling mechanism 1 has a traction handle 111 that is easy to grip with the hand. The traction handle 111 is mounted on the high-position support frame 11 and can be manually pushed and pulled to drive the traveling mechanism 1 and the roller seat 2 to or away from the steel plate grinding equipment 4 in the front-back direction. The traction handle 111 is easy to grip with the hand, so the traveling mechanism 1 can be manually pushed and pulled to move in the front-back direction. There is no need to install a traveling motor on the traveling mechanism, which further simplifies the structure of the roller changing car and reduces the cost of the traveling mechanism 1.

[0093] Furthermore, the roll changing trolley, once moved to the roll changing station, needs to remain stationary for the next roll changing operation. Therefore, an insertion hole c is provided on the ground at the roll changing station. The front end of the traveling mechanism 1 has a positioning mechanism, which is mounted on the high-level support frame 11. The positioning mechanism includes an overlap plate 15 and vertically extendable insertion posts 16. The overlap plate 15 is symmetrically arranged at both ends of the insertion posts 16 in the left-right direction. The insertion posts 16 can rotate circumferentially with the vertical axis as the center. A handle 14 is provided at the upper end of the insertion post 16, resting on the upper end of the overlap plate 15. When the traveling mechanism 1 needs to remain stationary, the handle 14 can be moved circumferentially by moving it. Rotate until it separates from the overlapping plate 15, so that the lower end of the insert 16 extends downward and inserts into the insertion hole c, thereby keeping the traveling mechanism 1 fixed; when the traveling mechanism 1 needs to move back and forth, pull the handle 14 to retract the insert 16 upward, and then turn the handle 14 again to make it rotate in the opposite direction and overlap the upper end of the overlapping plate 15, thereby releasing the traveling mechanism 1 from the fixed state; when changing rollers, manually operate the handle 14 to overlap or separate it from the overlapping plate 15, thereby separating or engaging the insert 16 with the insertion hole c, realizing manual control of the forward and backward movement of the traveling mechanism 1, and making the roller connection process proceed smoothly.

[0094] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A limiting mechanism, wherein the limiting mechanism is disposed between the frame of a steel plate grinding and brushing device (4) and a track plate (31) symmetrically arranged front and rear and extending in the left and right directions, and is used to control the motion state of the roller seat (2) sliding into the steel plate grinding and brushing device (4), characterized in that, The limiting mechanism includes: An elastic swing mechanism (32) is provided at the inlet of the steel plate grinding and brushing equipment (4). The elastic swing mechanism (32) includes a rotating plate (326) in a horizontal position. The rotating plate (326) extends in the left and right direction and can be flexibly rotated up and down in the horizontal position with its middle position as the fulcrum. The rotating plate (326) includes a raised part facing the steel plate grinding and brushing equipment (4) and a pressed part facing away from the steel plate grinding and brushing equipment (4). The flexible switch mechanism includes a flexible telescopic pin (322a) disposed below the pressing part and extending in the front-back direction. The flexible telescopic pin (322a) can elastically extend and retract in the front-back direction and can rotate circumferentially along its own axis. The head of the flexible telescopic pin (322a) is provided with an upper and lower opposing telescopic end and a limiting end. The telescopic end of the head of the flexible telescopic pin (322a) contacts the pressing part. When the pressing part elastically rotates downward, the telescopic end is configured to retract in the front-back direction after contacting the downward rotating pressing part, and the limiting end is configured to restrict the downward elastic rotation of the pressing part. When the roller seat (2) slides into the steel plate grinding equipment (4), the rotating plate (326) can touch the roller seat (2), causing the raised part to rotate upward elastically in the horizontal position while driving the lower pressing part to rotate downward elastically, and causing the lower pressing part to touch the telescopic end of the head of the elastic telescopic pin (322a), causing the telescopic end to retract in the front-back direction, thereby causing the roller seat (2) to slide from below the rotating plate (326) to the raised part; then the rotating plate (326) rotates downward to reset to the horizontal state, causing the roller seat (2) to come into contact with the raised part in the opposite direction and form a reaction force for the lower pressing part to rotate downward elastically; at this time, the head of the elastic telescopic pin (322a) extends in the front-back direction, and rotates circumferentially under the action of external force and switches from the telescopic end to the limiting end to restrict the lower pressing part to rotate downward elastically, thereby restricting the roller seat (2) from sliding out of the steel plate grinding equipment (4) in the opposite direction. When the roller seat (2) slides out of the steel plate grinding equipment (4), the head of the elastic telescopic pin (322a) can rotate in the opposite direction under the action of external force and switch from the limiting end to the telescopic end to release the restriction of the downward elastic rotation of the pressing part, so that the roller seat (2) slides out of the steel plate grinding equipment (4) in the opposite direction.

2. The limiting mechanism according to claim 1, characterized in that: The raised part and the pressed part of the rotating plate (326) are both provided with springs (324) connected to the track plate (31). The springs (324) are in a stretched state and provide elastic rotation force and elastic restoring force for the rotating plate (326) to rotate up and down elastically.

3. The limiting mechanism according to claim 1, characterized in that: A vertical plate (328) is connected to the raised part. The bottom of the vertical plate (328) is a V-shaped structure, which forms two first inclined surfaces (329) that are symmetrical on the left and right at the bottom of the vertical plate (328). The roller seat (2) is provided with a corresponding limiting part (243). Both first inclined surfaces (329) can touch the limiting part (243), so that the raised part of the rotating plate (326) can rotate elastically upward along the horizontal position while driving the pressing part to rotate elastically downward.

4. A limiting mechanism according to claim 1, characterized in that: The elastic telescopic pin (322a) is inserted into a fixed block (321) in the left-right direction, and the head of the elastic telescopic pin (322a) protrudes out of the fixed block (321). The fixed block (321) has a hollowed-out mounting hole (321c) on the end face near the head of the elastic telescopic pin (322a). A compression spring (327) is provided in the mounting hole (321c) and fitted on the elastic telescopic pin (322a). The elastic telescopic pin (322a) protrudes outward on the corresponding wall surface to form an abutment ring (322c). The compression spring (327) is locked between the bottom surface of the mounting hole (321c) and the abutment ring (322c) to provide elastic telescopic force for the head of the elastic telescopic pin (322a).

5. A limiting mechanism according to claim 4, characterized in that: The opening of the mounting hole (321c) is provided with a bushing (37) that is threadedly connected to the inner wall of the mounting hole (321c). The bushing (37) can rotate circumferentially to press against the end face of the abutment ring (322c), thereby changing the distance between the abutment ring (322c) and the bottom surface of the mounting hole (321c) to adjust the elastic extension force of the compression spring (327).

6. A limiting mechanism according to claim 4, characterized in that: The tail of the elastic telescopic pin (322a) protrudes from the fixing block (321) to form a tail protrusion end. A lever (322b) perpendicular to the elastic telescopic pin (322a) is connected to the tail protrusion end. When the roller seat (2) is restricted from sliding out of the steel plate grinding equipment (4), the lever (322b) remains vertically downward. At this time, the limiting end of the head of the elastic telescopic pin (322a) restricts the downward elastic rotation of the pressing part. When the roller seat (2) slides out of the steel plate grinding equipment (4), the lever (322b) can be turned upward by hand and rotated half a turn, so that the limiting end of the head of the elastic telescopic pin (322a) switches to the telescopic end, thereby releasing the restriction on the downward elastic rotation of the pressing part.

7. A limiting mechanism according to claim 6, characterized in that: A magnet (f) connected to the frame is provided above the fixed block (321). The lever (322b) is made of a magnetic metal. When the lever (322b) is flipped upward, the magnet (f) can attract the lever (322b) and provide sliding support for the elastic telescopic pin (322a), so that the elastic telescopic pin (322a) can elastically retract in the front-back direction.

8. A limiting mechanism according to claim 6, characterized in that: The left and right sides of the end of the lever (322b) away from the elastic telescopic pin (322a) are milled flat, thereby forming a milled part (322d) at the end of the lever (322b) away from the elastic telescopic pin (322a). When the lever (322b) is close to the frame, a toggle area (h) that is easy for the hand to put in can be formed between the milled part (322d) and the frame.

9. A limiting mechanism according to claim 1, characterized in that: The telescopic end of the head of the elastic telescopic pin (322a) is provided with a downwardly extending contact slope (g). When the pressing part faces the telescopic end and rotates downward elastically, the contact slope (g) contacts the pressing part, causing the elastic telescopic pin (322a) to retract in the front-back direction. When the pressing part faces the limiting end and rotates downward elastically, the outer wall surface of the head of the elastic telescopic pin (322a) abuts against the pressing part, restricting the downward elastic rotation of the pressing part.

10. A limiting mechanism according to claim 1, characterized in that: The limiting mechanism also includes an auxiliary elastic limiting mechanism (33), which includes a limiting plate (331) that restricts the roller seat (2) from sliding into the steel plate grinding equipment (4) and is in an elastic pre-tightened state. The limiting plate (331) is connected to the inner side of the front and rear symmetrical track plates (31) and has a limiting position and an auxiliary position. When the roller seat (2) is restricted from sliding out of the steel plate grinding equipment (4), the limiting plate (331) is in the limiting position. At this time, the limiting plate (331) restricts the roller seat (2) from sliding inward and also applies a reverse elastic force to the roller seat (2). When the roller seat (2) is released from the restriction of sliding out of the steel plate grinding equipment (4), the limiting plate (331) switches from the limiting position to the auxiliary position. At this time, the limiting plate (331) can release the reverse elastic force to push the roller seat (2) to slide out of the steel plate grinding equipment (4).

11. A limiting mechanism according to claim 10, characterized in that: The inner side of the track plate (31) is provided with a sliding groove (332) extending along the inside of the steel plate grinding device (4). A slot (332a) communicating with the sliding groove (332) is provided below the end of the sliding groove (332). The front and rear ends of the limiting plate (331) are locked in the corresponding slots (332a). A triggering inclined surface (332b) extending obliquely upward is connected between the slot (332a) and the end of the sliding groove (332). When the roller seat (2) slides into the steel plate grinding device (4), the roller seat (2) pushes the limiting plate (332a). 31), the front and rear ends of the limiting plate (331) are driven to slide upward along the triggering inclined surface (332b) into the slide groove (332), so that the limiting plate (331) enters the limiting position. At this time, the roller seat (2) is restricted from sliding by the elastic switch mechanism and the limiting plate (331) and remains stationary on the track plate (31). When the roller seat (2) is released from the restriction of sliding out of the steel plate brushing device (4), the limiting plate (331) slides in the reverse direction in the slide groove (332), so that the limiting plate (331) switches from the limiting position to the auxiliary position.

12. A limiting mechanism according to claim 11, characterized in that: A lug (36) extends downward from the track plate (31) away from the limiting plate (331). An auxiliary push spring (34) is connected between the lug (36) and the limiting plate (331). The auxiliary push spring (34) is in a stretched state, so that the limiting plate (331) is in an elastic pre-tightened state. When the limiting plate (331) slides in the reverse direction in the slide groove (332), the auxiliary push spring (34) switches from the stretched state to the reset state to release the reverse elastic force of the roller seat (2).

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