Multi-purpose locking mechanism and locking device for steel plate grinding brushes

Abstract

The present invention relates to a multi-purpose locking mechanism, including a mounting seat and a driving device, wherein a locking portion is provided on the mounting seat, and a pressing portion is provided inside the mounting seat; when the pressing portion is driven by the driving device to move in one direction, one end of the pressing locking portion extends outward in the vertical direction to lock the external carrier. There is also a locking device for steel plate brushes, wherein the lower roller seat is mounted on the lower support seat; the upper and lower ends of the frame are connected to a fixed seat, and a guide groove is provided on the side wall of the fixed seat, a pressing platform extends from the side wall of the lower support seat, a support is connected to the fixed seat, and the mounting seat is connected to the bottom surface of the support. The hollow sealed mounting seat not only provides a connection point between the locking portion and the pressing portion, but also provides a sealed environment to avoid the negative impact of the complex external environment on it; the locking portion is extended outward by the sliding pressing of the pressing portion, thereby locking the external carrier, and the locking effect is more stable than the traditional gear and rack meshing locking.

Description

Technical Field

[0001] The invention belongs to the technical field of metal surface treatment, and in particular relates to a multi-purpose locking mechanism and a locking device for steel plate grinding brushes. Background Art

[0002] In the treatment of scale on the surface of steel plates, the invention patent with application number CN202111287159.2 discloses a steel plate surface treatment device that is easy to change rollers. By arranging brush rollers on the upper and lower surfaces of the steel plate, the upper and lower surfaces of the steel plate can be treated at the same time, greatly improving efficiency. In addition, due to the wear of the abrasive on the surface of the brush roller during brushing, the brush roller needs to be replaced regularly. In order to facilitate the replacement of the brush roller, the document also records that the brush roller is connected to the mounting seat, and the mounting seat is then connected to a bearing seat that can slide relative to the base. When changing the roller, the bearing seat is driven by the translation drive assembly to move to the roller changing area for replacement. After the roller is changed, the bearing seat is driven back to the working area. The translation drive assembly includes a translation drive motor connected to the bearing seat and a rack connected to the guide rail. The translation drive motor drives the gear meshing with the rack at its output end to rotate, thereby driving the bearing seat to slide along the guide rail; the relative fixation of the bearing seat in the length direction of the guide rail is achieved by the meshing limit of the gear and the rack.

[0003] However, the relative fixation of the bearing seat by the engagement of the above-mentioned gear and rack will have the following problems: 1. The entire grinding and brushing environment is quite harsh. There are not only oxide scale, abrasive debris and dust from grinding, but also water used for flushing. Especially for the second translation drive component below, oxide scale, abrasive debris and dust and sewage mixed with them will splash onto the gear and rack, which is likely to have a negative impact on the coordination of the gear and rack. In other words, locking the bearing seat in this way is easily affected by the production environment; 2. The weight of the brush roller is very heavy, and the grinding steel plate is also very strong. Therefore, when the brush roller rotates at high speed for grinding, the jitter and inertial offset force it generates are very large. Relying on the above-mentioned method to lock the bearing seat is likely to damage the displacement drive motor, and the locking effect is also poor; coupled with the harsh working environment, water and rust are easily infiltrated between the components, and lubrication is not well considered. Therefore, the action will become stuck after a long time, and the working stability is poor; therefore, there is an urgent need for a device that can stably lock the bearing seat to improve the overall stability during the grinding and brushing process. Summary of the Invention

[0004] In order to solve the above-mentioned technical problems, the purpose of the present invention is to provide a multi-purpose locking mechanism, which connects the pressing part and the locking part of the sliding pressing fit into a sealed mounting seat, which can effectively prevent the influence of external dust and sewage on the locking mechanism; when the external carrier needs to be locked, the locking part can be driven to extend outward for locking through the sliding of the pressing part, and the locking effect is more stable; at the same time, a lubrication and oiling design is designed, so that lubrication can be obtained during the locking action, and there is no need to worry about the problem of poor movement caused by rust and water ingress even after long-term use.

[0005] Furthermore, a locking device for a steel plate grinding brush is provided, which is locked by the cooperation between the pressing part and the locking part, so that the device is more stable during operation.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0007] The locking mechanism of claim 1, wherein the locking mechanism further comprises a first locking member which is movable in a vertical direction and a second locking member which is movable in a vertical direction and a second locking member which is movable in a vertical direction and a third locking member which is movable in a vertical direction and a third locking member which is movable in a horizontal direction and a third locking member which is movable in a vertical direction and a third locking member which is movable in a horizontal direction and a third locking member which is movable in a vertical direction and a third locking member which is movable in a vertical direction and a third locking member which is movable in a vertical direction and a third locking member which is movable in a vertical direction and a third locking member which is movable in a vertical direction and a third locking member which

[0008] The sealed connection between the mounting seat and the driving device enables the overall structure to avoid the influence of the complex external production environment, and under the drive of the driving device, the pressing part presses the locking part to extend outward and then locks the external carrier that needs to be fixed. This pressing and matching method is more stable and effective. If it is necessary to release the lock, the driving device drives the pressing part to disengage from the pressing on the locking part, and the reset mechanism drives the locking part to reset. On the one hand, the lock is released, and on the other hand, the reset of the locking part can facilitate the next extension locking, and also facilitate the movement of the external carrier without interference or obstruction. During the entire brushing operation, locking and unlocking are often required, and the wear of the parts will affect the description of the locking mechanism. The oil circuit and the oil filling hole can provide oil lubrication for the locking mechanism to reduce the wear of the locking part. Similarly, the lubrication groove can lubricate the pressing part to reduce the wear of the pressing part; the breathing hole and the oil circuit can keep the air pressure inside the locking mechanism stable.

[0009] Preferably, the pressing portion has a connecting end, and two symmetrically arranged sliding portions extend horizontally from the side wall of the connecting end, and the bottom surface of the sliding portion is inclined upward in the extending direction so that the pressing portion is wedge-shaped as a whole, and an accommodation space is formed between the two sliding portions; the front and rear sides of the locking portion are retracted to form a retracted portion, and the locking portion has an upper horizontal plane and a lower inclined surface at the bottom in the retracted position, and the inclination angle of the lower inclined surface is the same as the inclination angle of the bottom surface of the sliding portion; when the sliding portion moves, the accommodation space is used to avoid the retracted portion and the locking portion is driven to extend outward by the sliding pressure between its bottom surface and the lower inclined surface.

[0010] The two sliding parts extending from the side wall of the connecting end cooperate with the retracted parts on the front and rear sides of the upper locking part, so that when the sliding part is pressed against the lower inclined surface, the two lower inclined surfaces on the front and rear sides of the locking part are subjected to more uniform force, and the two symmetrical sliding parts have a clamping action on the retracted part, which can also prevent the locking part from rotating when it is extended outward to lock the external carrier, thereby causing the locking part to be unable to be locked or the locking to be not firm enough; the accommodation space formed between the two sliding parts can also avoid the retracted part to prevent it from affecting the action of the locking part.

[0011] Preferably, the top of the mounting seat has an extension portion that is connected to the mounting seat and is also hollow inside; the locking portion extends upward into the extension portion so that the locking portion passes through the top and bottom of the mounting seat at the same time, so that the locking portion can be stably extended or retracted.

[0012] The locking part is simultaneously passed through the upper and lower sides of the mounting seat, which not only has the function of guiding and limiting, but also improves the stability of the locking part when it moves up and down. If it is only passed through the lower side of the mounting seat, when the sliding part moves horizontally and presses against the downward inclined surface, a horizontal thrust will be generated on the locking part. This thrust will cause the locking part to tilt, thereby reducing the locking effect.

[0013] Preferably, the reset mechanism is placed in the extension part and located at the top of the locking part; the reset mechanism includes a sleeve that is sleeved on the top of the locking part and fixed by bolts, and the top of the sleeve extends radially outward to have a pressing outer edge, and a spring is sleeved on the outer side of the circumferential surface of the sleeve, the upper end of the spring abuts against the pressing outer edge, and the lower end of the spring abuts against the top surface of the mounting seat in the extension part.

[0014] The reset mechanism can reset the locking part. When the pressing part presses the locking part outward, the sleeve will move with it, and the pressing outer edge will compress the spring. When the pressing part is released from the pressing part, the elastic force of the spring will drive the locking part to reset.

[0015] Preferably, the breathing hole and the oil filling hole are arranged at the top of the circumferential surface of the extension part; the end of the sleeve that is connected to the locking part is also provided with a plurality of notches, and the mounting seat is filled with oil, and the oil filling amount is 30-60% of the internal volume of the mounting seat; the oil is injected from the oil filling hole and flows into the oil circuit through the notch and then fills into the mounting seat. In the process of the pressing part driving the locking part to move, the oil flows through the oil circuit and the notch in the mounting seat and the extension part to lubricate the various components.

[0016] Due to the harsh production environment, it is necessary to frequently maintain and service the parts that are prone to wear. The relative sealing between the mounting seat and the driving device, on the one hand, prevents the erosion of the locking part and the pressing part by external dust and water stains, and on the other hand, prevents the oil filled in the mounting seat from flowing out. The oil can flow in the mounting seat and the extension part with each movement of the pressing part, thereby lubricating the various parts. When filling the oil, it can be directly injected into the extension part from the oil filling hole, and then flow to the oil circuit through the notch of the sleeve, and then flow to the mounting seat from the oil circuit. When the pressing part moves in the mounting seat and presses the locking part, it pushes the oil to gather to one side, so that the oil returns from the oil circuit to the extension part. When the pressing part releases the pressure on the locking part, the oil will flow from the notch to the oil circuit back to the mounting seat, thereby self-lubricating the parts that generate friction and reducing the number of maintenance.

[0017] Preferably, the lubrication groove is arranged on the top surface of the connecting end and the sliding part, and the lubrication groove on the top surface of the sliding part extends in a zigzag shape along its length direction to accommodate more oil; the oil in the lubrication groove can reduce the friction between the pressing part and the inner top wall of the mounting seat during the reciprocating motion of the pressing part.

[0018] The lubrication groove is set so that when the pressing part moves to one side and pushes the oil, part of the oil will flow into the lubrication groove, so that the oil can be stored in the lubrication groove, constantly lubricating the top of the pressing part and the top wall of the mounting seat, reducing the friction generated during movement.

[0019] Preferably, the driving device is an oil cylinder, one end of the cylinder barrel of the oil cylinder is passed through the side wall of the mounting seat, the piston rod of the oil cylinder is placed in the mounting seat, and the connecting end is provided with a slide groove in the vertical direction, and the slide groove has a connecting block connected to the end of the piston rod.

[0020] The slide groove and the connecting block are provided to allow the oil cylinder piston rod to deflect and buffer when pushing the pressing part to move, thereby preventing the piston rod from breaking.

[0021] A locking device for a steel plate grinding brush comprises the multi-purpose locking mechanism as described above, a frame and a lower roller seat for supporting a brush roller, the lower roller seat being mounted on a lower support seat and being able to move horizontally along the length direction of the frame; the upper and lower ends of the frame are connected to a fixed seat, a guide groove is further provided on the side wall of the fixed seat, a pressing platform extending from the side wall of the lower support seat and extending into the guide groove, the fixed seat is connected to a support extending outward from the side wall of the fixed seat, and the mounting seat is connected to the bottom surface of the support; in a working state, the driving device drives the pressing part to move and the pressing locking part extends outward and is pressed and locked on the surface of the pressing platform.

[0022] The cooperation between the pressing portion and the locking portion can make the pressing and locking of the pressing platform more stable, and the multi-purpose locking mechanism can be provided in multiple groups, thereby improving the locking effect.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The hollow, sealed mounting seat not only provides a connection point between the locking portion and the pressing portion, but also creates a sealed environment to prevent the negative impact of complex external environments. The sliding pressing of the pressing portion causes the locking portion to extend outward, thereby locking the external carrier. The locking effect is more stable than the traditional gear and rack meshing locking.

[0025] The arrangement of the locking portion passing through the top and bottom of the mounting seat can improve the stability of the locking portion when extending or retracting;

[0026] Furthermore, by providing the oil passage and the gap, the oil can flow between the mounting seat and the extension portion, so that the locking mechanism is lubricated with the oil each time it is used, thereby increasing the overall service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the multi-purpose locking mechanism of the present invention;

[0028] Figure 2 This is a sectional view of the three-dimensional structure of the multi-purpose locking mechanism of the present invention;

[0029] Figure 3 This is a schematic diagram of the multi-purpose locking mechanism of the present invention in an unused state;

[0030] Figure 4 This is a schematic diagram of the working state of the multi-purpose locking mechanism of the present invention;

[0031] Figure 5 This is a schematic diagram of the explosion structure of the multi-purpose locking mechanism in the present invention. Figure 1 ;

[0032] Figure 6 This is a schematic diagram of the explosion structure of the multi-purpose locking mechanism in the present invention. Figure 2;

[0033] Figure 7 It is a schematic diagram of the three-dimensional structure of the locking device in the present invention;

[0034] Figure 8 is a cross-sectional view of the locking device of the present invention;

[0035] Figure 9 yes Figure 8 A magnified view of the structure at center A;

[0036] Figure 10 It is a structural schematic diagram of the lower roller seat supporting the brush roller in the locking device of the present invention.

[0037] Description of the drawings: 201a lower roller seat; 203a, lower support seat; 204, pressing platform; 205, fixed seat; 206, guide groove; 210, support; 5, brush roller; 7, frame; 901, mounting seat; 9011, extension portion; 9012, breathing hole; 9013, oil filling hole; 902, locking portion; 9021, retracted portion; 9022, upper plane; 9023, lower inclined surface; 9024, oil circuit; 903, pressing portion; 9031, connecting end; 9032, sliding portion; 9033, accommodating space; 9034, lubrication groove; 9035, slide; 904, driving device; 905, reset mechanism; 9051, sleeve; 9052, pressing outer eaves; 9053, spring; 9054, notch. Implementation Method

[0038] The following is a detailed description of the specific embodiments of the present invention with reference to the accompanying drawings.

[0039] In this embodiment, a multi-purpose locking mechanism is specifically disclosed, such as Figure 1-10 As shown, its specific structure includes a mounting base 901 with a hollow and sealed interior and a driving device 904 sealed to its side wall, the mounting base 901 is provided with a liftable locking portion 902 in the vertical direction, and a pressing portion 903 cooperating with the locking portion 902 is further provided in the mounting base 901; when the pressing portion 903 is driven by the driving device 904 to move in one direction, it presses one end of the locking portion 902 to extend outward in the vertical direction to lock the external carrier; the locking portion 902 is also provided with a reset mechanism 905, and when the pressing portion 903 is driven by the driving device 904 to move in the opposite direction, the reset mechanism 905 can drive the locking portion 902 to retract in the vertical direction to disengage the lock on the external carrier.

[0040] The multi-purpose locking mechanism is specifically applied to a locking device for steel plate grinding brushes, whose specific structure also includes a frame 7 and a lower roller seat 201a for supporting the brush roller 5, the lower roller seat 201a is installed on the lower support seat 203a, and the lower roller seat 201a can move horizontally along the length direction of the frame 7; the upper and lower ends of the frame 7 are connected to a fixed seat 205, and a guide groove 206 is also provided on the side wall of the fixed seat 205, and a pressing platform 204 extending into the guide groove 206 extends from the side wall of the lower support seat 203a, and the fixed seat 205 is connected to a support 210 extending outward from the side wall of the fixed seat 205, and the mounting seat 901 is connected to the bottom surface of the support 210; in the working state, the driving device 904 drives the pressing part 903 to move and then presses the locking part 902 to extend outward and press and lock it on the surface of the pressing platform 204.

[0041] In actual use, since the brushing of the steel plate by the brush roller 5 will cause wear of the abrasive wire on the surface of the brush roller 5, the brush roller 5 needs to be replaced, and the lower roller seat 201a supporting the brush roller 5 is moved out of the surface of the steel plate along the length direction of the frame 7. After the roller is replaced, it is moved back to the original position to continue brushing the steel plate. Since the brush roller is heavy, it has a large inertia when rotating, which causes the lower roller seat 201a and the lower support seat 203a to shake. The traditional locking device is not stable enough and is easily affected by the external environment. However, in this embodiment, the pressing part 903 and the locking part 902 are pressed together, so that the locking part 902 extends out of the mounting seat 901 and presses against the surface of the pressing platform 204, thereby achieving fixation, and a plurality of multi-purpose locking mechanisms can be arranged on the fixing seat 205 to improve the stability of the locking. In order to improve the brushing effect, brush rollers 5 and lower roller seats 201a are usually provided on the upper and lower surfaces of the steel plate. The same multi-purpose locking mechanism can also be installed on the fixed seat 205 at the upper end of the frame 7 to achieve the same locking effect.

[0042] The specific pressing process of the pressing portion 903 on the locking portion 902 is as follows: the pressing portion 903 has a connecting end 9031, and two symmetrically arranged sliding portions 9032 extend horizontally from the side wall of the connecting end 9031. The bottom surfaces of the sliding portions 9032 are inclined upward in the extending direction, so that the pressing portion 903 is wedge-shaped as a whole, and an accommodating space 9033 is formed between the two sliding portions 9032; the front and rear sides of the locking portion 902 are retracted to form a retracted portion 9021. The locking portion 902 has an upper horizontal plane 9022 and a lower inclined surface 9023 at the bottom in the retracted position, and the inclination angle of the lower inclined surface 9023 is the same as the inclination angle of the bottom surface of the sliding portion 9032; when the sliding portion 9032 moves, the accommodating space 9033 avoids the retracted portion 9021 and drives the locking portion 902 to extend outward through the sliding pressing between its bottom surface and the lower inclined surface 9023.

[0043] The driving device 904 drives the pressing portion 903 to move, and the symmetrically arranged sliding portions 9032 in the pressing portion 903 also move accordingly, and then move to the position where the front and rear sides of the locking portion 902 are retracted. As they continue to move, the wedge-shaped sliding portions 9032 press against the lower inclined surface 9023, thereby converting the horizontal movement of the pressing portion 903 into the vertical movement of the locking portion 902. Under the continuous pressure of the sliding portions 9032, the locking portion 902 continues to extend outward, thereby gradually pressing and locking the pressing platform 204. The space 9033 formed between the two sliding portions 9032 can also avoid the retracted portion 9021, preventing it from affecting the movement of the locking portion 902. The symmetrical arrangement of the sliding portion 9032 allows the sliding portion 9032 to apply a more uniform force to the lower inclined surface 9023 under the drive of the driving device 904. On the other hand, the two sliding portions 9032 clamp the retracted portion 9021, thereby limiting the rotation of the locking portion 902 and avoiding affecting the pressing lock.

[0044] In order to improve the stability of the locking part 902 when it moves up and down, the top of the mounting seat 901 has an extension part 9011 that is connected to the mounting seat 901 and is also hollow inside; the locking part 902 extends upward into the extension part 9011 so that the locking part 902 is simultaneously provided at the top and bottom of the mounting seat 901, so that the locking part 902 can be stably extended or retracted.

[0045] Since the frequency of replacement of the brush roller 5 is relatively frequent, it is necessary to frequently lock or unlock the pressure platform 204 through a multi-purpose locking mechanism. In order to facilitate re-locking after replacing the brush roller 5, a reset mechanism 905 is placed in the extension part 9011 and at the top of the locking part 902; the reset mechanism 905 includes a sleeve 9051 that is sleeved on the top of the locking part 902 and fixed by bolts, and a pressure outer edge 9052 is extended radially outward from the top of the sleeve 9051, and a spring 9053 is sleeved on the outer side of the circumferential surface of the sleeve 9051, and the upper end of the spring 9053 abuts against the pressure outer edge 9052, and the lower end of the spring 9053 abuts against the top surface of the mounting seat 901 in the extension part 9011.

[0046] When the pressing portion 903 presses the locking portion 902 outward, the pressing outer edge 9052 on the top of the sleeve 9051 will compress the spring 9053 to cause deformation, so that when the pressing portion 903 is released from the pressing of the locking portion 902, the locking portion 902 will be reset under the action of the elastic force of the spring 9053. On the one hand, it enables the lower end of the locking portion 902 to be released from the pressing platform 204 to prevent interference with the movement of the lower roller seat 201a. On the other hand, it also facilitates the subsequent pressing of the locking portion 902 by the pressing portion 903 again.

[0047] In addition, due to the harsh production environment, in order to reduce the maintenance of equipment components, a breathing hole 9012 and an oil filling hole 9013 are provided on the top of the circumferential surface of the extension part 9011; an oil path 9024 connecting the sleeve 9051 and the mounting seat 901 is provided on the locking part 902, and a plurality of notches 9054 are also provided on the end of the sleeve 9051 that is sleeved with the locking part 902. The mounting seat 901 is filled with oil, and the oil filling amount is 30-60% of the internal volume of the mounting seat 901; the oil is injected from the oil filling hole 9013 and flows into the oil path through the notch 9054 and then fills the mounting seat 901. In the process of the pressing part 903 driving the locking part 902 to move, the oil flows through the oil path 9024 and the notch 9054 in the mounting seat 901 and the extension part 9011 to lubricate the various components.

[0048] The oil inside the mounting seat 901 can self-lubricate its internal components. When the oil is filled, it is injected into the extension portion 9011 through the oil filling hole 9013. The oil then flows from the notch 9054 to the oil passage 9024, and then from the oil passage 9024 to the mounting seat 901. In operation, when the pressing portion 903 moves to the side and presses against the locking portion 902, the oil is also forced to flow and gather to one side. The gathered oil then flows back into the sleeve 9051 through the oil passage 9024 and then flows from the notch 9054 to the extension portion 9011. When the pressing portion 903 releases its pressure on the locking portion 902, the oil flows back into the mounting seat 901. Although there is a gap between the pressing portion 903 and the inner wall of the mounting seat 901, the gap is small. During the process of pushing the oil to flow, less oil flows through this gap, allowing the oil to still flow from the oil passage 9024 to the extension portion 9011. Each locking will cause the oil in the temple to flow once, achieving self-lubrication, which can reduce wear between components and increase service life.

[0049] Since the top surface of the pressing portion 903 will always come into contact with the inner top wall of the mounting seat 901 when moving, the top surfaces of the connecting end 9031 and the sliding portion 9032 are also retracted to form mutually connected lubrication grooves 9034. The lubrication groove 9034 on the top surface of the sliding portion 9032 extends in a zigzag shape along its length to accommodate more oil; the oil in the lubrication groove 9034 can reduce the friction between the pressing portion 903 and the inner top wall of the mounting seat 901 during the reciprocating motion of the pressing portion 903.

[0050] The drive device 904 is a hydraulic cylinder, one end of which is inserted into the side wall of the mounting base 901. The piston rod of the hydraulic cylinder is placed in the mounting base 901. The connecting end 9031 is provided with a vertical slot 9035, and the slot 9035 contains a connecting block connected to the end of the piston rod. The arrangement of the slot 9035 and the connecting block allows for deflection of the hydraulic cylinder during the pushing process, and the vertical movement of the connecting block also acts as a buffer.

[0051] The above contents described in this specification are merely examples of the present invention. Those skilled in the art may make various modifications, additions, or substitutions to the described embodiments, without departing from the contents of this specification or exceeding the scope defined by the claims, and such modifications, additions, or substitutions may be made to the described embodiments. Such modifications, additions, or substitutions may be made by persons skilled in the art. Such modifications, additions, or substitutions may be made to the described embodiments without departing from the contents of this specification or exceeding the scope defined by the claims, and such modifications shall fall within the scope of protection of the present invention.

Claims

1. A multi-purpose locking mechanism, characterized in that: The invention comprises a mounting seat (901) with a hollow and sealed interior and a driving device (904) sealedly connected to the side wall thereof, wherein the mounting seat (901) is provided with a lifting locking portion (902) in the vertical direction, and a pressing portion (903) cooperating with the locking portion (902) is further provided in the mounting seat (901); when the pressing portion (903) is driven by the driving device (904) to move in one direction, it presses one end of the locking portion (902) to extend outward in the vertical direction to lock an external carrier; a reset mechanism (905) is further provided on the locking portion (902); when the pressing portion (903) is driven by the driving device (904) to move in the opposite direction, the reset mechanism (905) can drive the locking portion (902) to retract in the vertical direction to disengage from the locking of the external carrier; The mounting seat (901) is provided with a hollow extension portion (9011), and the extension portion (9011) is provided with a breathing hole (9012) and an oil filling hole (9013); the locking portion (902) is provided with an oil passage (9024) connecting the mounting seat (901) and the extension portion (9011); the breathing hole (9012) and the oil passage (9024) are jointly configured to maintain stable air pressure inside the mounting seat (901) and the extension portion (9011); the oil filling hole (9013) and the oil passage (9024) are jointly configured to allow oil to circulate between the mounting seat (901) and the extension portion (9011) and lubricate the locking portion (902); and the pressing portion (903) is provided with a lubrication groove (9034), and the lubrication groove (9034) is configured to accommodate oil to lubricate the pressing portion (903).

2. The multi-purpose locking mechanism according to claim 1, characterized in that: The pressing portion (903) has a connecting end (9031), and two symmetrically arranged sliding portions (9032) extend horizontally from the side wall of the connecting end (9031). The bottom surface of the sliding portion (9032) is inclined upward in the direction of extension, so that the pressing portion (903) is wedge-shaped as a whole, and an accommodating space (9033) is formed between the two sliding portions (9032); the front and rear sides of the locking portion (902) are inwardly retracted to form an inwardly retracted portion (9021). The locking portion (902) has an upper horizontal plane (9022) and a lower inclined surface (9023) in the retracted position, and the inclination angle of the lower inclined surface (9023) is the same as the inclination angle of the bottom surface of the sliding portion (9032). When the sliding portion (9032) moves, the space (9033) is allowed to avoid the retracted portion (9021) and the locking portion (902) is driven to extend outward by the sliding pressure between its bottom surface and the lower inclined surface (9023).

3. The multi-purpose locking mechanism according to claim 1, characterized in that: The locking portion (902) extends upward into the extending portion (9011) so that the locking portion (902) is simultaneously passed through the top and bottom of the mounting seat (901), thereby allowing the locking portion (902) to stably extend or retract.

4. The multi-purpose locking mechanism according to claim 3, characterized in that: The reset mechanism (905) is placed in the extension portion (9011) and is located at the top of the locking portion (902); the reset mechanism (905) includes a sleeve (9051) that is sleeved on the top of the locking portion (902) and fixed by bolts, and a pressing outer edge (9052) is extended radially outward from the top of the sleeve (9051), and a spring (9053) is sleeved on the outer side of the circumferential surface of the sleeve (9051), the upper end of the spring (9053) is in contact with the pressing outer edge (9052), and the lower end of the spring (9053) is in contact with the top surface of the mounting seat (901) in the extension portion (9011).

5. The multi-purpose locking mechanism according to claim 4, characterized in that: The breathing hole (9012) and the oil filling hole (9013) are arranged at the top of the circumferential surface of the extension part (9011); the end of the sleeve (9051) that is sleeved with the locking part (902) is also provided with a plurality of notches (9054); the mounting seat (901) is filled with oil, and the oil filling amount is 30-60% of the internal volume of the mounting seat (901); the oil is injected from the oil filling hole (9013) and flows into the oil path through the notches (9054) and then fills into the mounting seat (901). When the pressing part (903) drives the locking part (902) to move, the oil flows through the oil path (9024) and the notches (9054) in the mounting seat (901) and the extension part (9011) to lubricate the various components.

6. The multi-purpose locking mechanism according to claim 5, characterized in that: The lubricating groove (9034) is provided on the top surfaces of the connecting end (9031) and the sliding portion (9032), and the lubricating groove (9034) on the top surface of the sliding portion (9032) extends in a zigzag shape along its length direction to accommodate more oil; during the reciprocating movement of the pressing portion (903), the oil in the lubricating groove (9034) can reduce the friction between the pressing portion (903) and the inner top wall of the mounting seat (901).

7. The multi-purpose locking mechanism according to claim 2, characterized in that: The driving device (904) is an oil cylinder, one end of the cylinder barrel of the oil cylinder is inserted into the side wall of the mounting seat (901), and the piston rod of the oil cylinder is placed in the mounting seat (901). The connecting end (9031) is provided with a slide groove (9035) in the vertical direction, and the slide groove (9035) is provided with a connecting block connected to the end of the piston rod.

8. A locking device for steel plate grinding brush, characterized in that: The invention comprises a multi-purpose locking mechanism as described in any one of claims 1 to 7, a frame (7), and a lower roller seat (201a) for supporting a brush roller (5), wherein the lower roller seat (201a) is mounted on a lower support seat (203a), and the lower roller seat (201a) can move horizontally along the length direction of the frame (7); the upper and lower ends of the frame (7) are connected to a fixed seat (205), and a guide groove (206) is further provided on the side wall of the fixed seat (205). A pressing platform (204) extends from the side wall of the lower support seat (203a) and extends into the guide groove (206); the fixed seat (205) is connected to a support (210) extending outward from the side wall of the fixed seat (205); and the mounting seat (901) is connected to the bottom surface of the support (210); in the working state, the driving device (904) drives the pressing portion (903) to move and the pressing and locking portion (902) extends outward and is pressed and locked on the surface of the pressing platform (204).

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