A large casting mold surface residual casting sand cleaning device

Abstract

This invention discloses a device for cleaning residual casting sand from the surface of a large casting mold, belonging to the technical field of casting mold cleaning devices. It includes: a crossbeam mechanism, a traveling mechanism, a first clamping mechanism, a second clamping mechanism, a first cleaning mechanism, and a second cleaning mechanism. This device cleans residual casting sand from the surface of a large casting mold by using a first cleaning mechanism to clean residual casting sand from the bottom surface inside the mold, and a second cleaning mechanism to clean residual casting sand from the side walls inside the mold. The traveling mechanism moves the first and second cleaning mechanisms within the mold. Combined with a first limit switch and a second limit switch, the first and second cleaning mechanisms move back and forth repeatedly, improving the cleaning effect, simplifying manual operation, increasing automation, and improving work efficiency.

Description

Technical Field

[0001] This invention relates to the field of casting mold cleaning devices, specifically a device for cleaning residual casting sand from the surface of large casting molds. Background Technology

[0002] Large casting molds, as the name suggests, are molds used to cast large castings, such as molds for casting large machine tool beams. During the casting process, a certain amount of casting sand often remains on the surface of large casting molds. This residual casting sand may affect the quality of the next casting and the service life of the mold.

[0003] Currently, when cleaning the residual casting sand on the internal surface of large casting molds after use, it is usually necessary to manually clean the casting sand adhering to the inside using tools such as high-pressure water guns or grinding guns. Since large casting molds are usually large in size, manual cleaning with tools takes a lot of time and has low work efficiency.

[0004] Therefore, we propose a device for cleaning residual casting sand on the surface of large casting molds to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a device for cleaning residual casting sand on the surface of large casting molds, so as to solve the problem mentioned in the background art that large casting molds are usually large in size and require a lot of time and have low work efficiency when cleaning them manually with tools.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a device for cleaning residual casting sand on the surface of a large casting mold, comprising: a beam mechanism, a traveling mechanism, a first clamping mechanism, a second clamping mechanism, a first cleaning mechanism, and a second cleaning mechanism. The traveling mechanism is located at the bottom of the beam mechanism. The first clamping mechanism and the second clamping mechanism are symmetrically arranged on both sides of the beam mechanism. The first cleaning mechanism is located at the bottom of the traveling mechanism. There are two second cleaning mechanisms, symmetrically arranged on both sides of the first cleaning mechanism. The first cleaning mechanism includes two mounting plates and a first cleaning roller. A pulley is rotatably connected between the outer surfaces of the two mounting plates. A drive motor is fixedly mounted on the front outer surface of one of the mounting plates. The output end of the drive motor slides through the outer surface of the mounting plate and is fixedly connected to the pulley. The first cleaning roller is located below the pulley. A meshing tooth is provided on the outer surface of the first cleaning roller near the middle position. A transmission belt meshes between the outer surfaces of the pulley and the meshing tooth. First bevel gears are symmetrically fixedly connected to both ends of the first cleaning roller.

[0007] Preferably, the second cleaning mechanism includes a connecting plate, which is fixedly connected to the outer surface of the mounting plate. A mounting frame is fixedly connected to the outer surface of the connecting plate on the side away from the mounting plate. A second cleaning roller is rotatably connected between the inner top and inner bottom of the mounting frame. The outer surface of the first bevel gear slides through the outer surface of the mounting frame and extends to the outside.

[0008] Preferably, a second bevel gear is fixedly connected to the bottom of the second cleaning roller, the outer surface of the second bevel gear slides through the outer surface of the mounting frame and extends downward, the second bevel gear and the first bevel gear are meshed together, the outer surface of the first cleaning roller is provided with a first bristle, and the outer surface of the second cleaning roller is provided with a second bristle.

[0009] Preferably, the beam mechanism includes a mounting beam, a hook is fixedly installed at the top center of the mounting beam, auxiliary handles are fixedly installed on the front and rear outer surfaces of the mounting beam, and sliding grooves are symmetrically opened on the two outer surfaces of the mounting beam.

[0010] Preferably, the walking mechanism includes a walking frame, which is fixedly connected to the bottom of the mounting beam. A threaded screw is rotatably connected between the inner walls of the walking frame. A forward and reverse motor is fixedly installed on the front surface of the walking frame. A sliding seat is slidably embedded inside the walking frame. The output end of the forward and reverse motor slides through the outer surface of the walking frame and extends into the interior. The output end of the forward and reverse motor is fixedly connected to the front end of the threaded screw.

[0011] Preferably, the outer surface of the threaded screw has a thread that penetrates the outer surface of the sliding seat, and the two mounting plates are symmetrically fixedly connected to the bottom of the sliding seat.

[0012] Preferably, the first clamping mechanism includes a first clamping plate and a second clamping plate. A long bolt is installed on one outer surface of the first clamping plate. The inner wall of the first clamping plate is in contact with the outer surface of the mounting beam. The long bolt slides through the outer surface of the mounting beam to connect the first clamping plate and the mounting beam.

[0013] Preferably, the front surface of the second clamping plate is threadedly connected to a first adjusting bolt, the rear end of the first adjusting bolt is rotatably connected to the front surface of the first clamping plate, and the second clamping plate and the sliding groove are slidably embedded in each other.

[0014] Preferably, the second clamping mechanism includes a third clamping plate and a fourth clamping plate. The rear surface of the fourth clamping plate is threadedly connected to a second adjusting bolt. The front end of the second adjusting bolt is rotatably connected to the rear surface of the third clamping plate. Both the third clamping plate and the fourth clamping plate are slidably embedded on the outer surface of the mounting beam.

[0015] Preferably, the outer surfaces of the first and second clamping plates on opposite sides near the bottom are provided with first anti-slip grooves, and the outer surfaces of the third and fourth clamping plates on opposite sides near the bottom are provided with second anti-slip grooves. A first limit switch is installed on the rear surface of the first clamping plate near the bottom, and a second limit switch is installed on the front surface of the third clamping plate near the bottom. The first and second limit switches correspond to the positions of the connecting plates.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The first cleaning mechanism cleans the residual casting sand on the bottom surface inside the large casting mold, while the second cleaning mechanism cleans the residual casting sand on the side walls inside the large casting mold. The walking mechanism moves the first and second cleaning mechanisms inside the large casting mold. In conjunction with the first and second limit switches, the first and second cleaning mechanisms move back and forth repeatedly, improving the cleaning effect, simplifying manual operation, achieving a high degree of automation, and improving work efficiency.

[0018] 2. When the first cleaning roller performs cleaning operations, it drives the two second cleaning rollers to rotate under the action of the first bevel gear and the second bevel gear. The whole operation can be completed with only one drive motor, which saves costs.

[0019] 3. The first clamping mechanism is used to clamp and fix the device and the large casting mold. The second clamping mechanism is used to improve the clamping effect, thereby ensuring the stability of the device during operation. Furthermore, the second clamping mechanism can move back and forth, so it can be applied to large casting molds of different lengths, thus improving its applicability. Attached Figure Description

[0020] Figure 1 This is a diagram illustrating the use of a device for cleaning residual casting sand from the surface of a large casting mold according to the present invention.

[0021] Figure 2 This is a perspective view of a device for cleaning residual casting sand from the surface of a large casting mold according to the present invention;

[0022] Figure 3 This is a schematic diagram of the crossbeam mechanism of a large casting mold surface residual casting sand cleaning device according to the present invention;

[0023] Figure 4 This is a schematic diagram of the walking mechanism of a large casting mold surface residual casting sand cleaning device according to the present invention;

[0024] Figure 5This is a schematic diagram of the first clamping mechanism of a large casting mold surface residual casting sand cleaning device of the present invention;

[0025] Figure 6 This is a schematic diagram of the second clamping mechanism of a large casting mold surface residual casting sand cleaning device according to the present invention;

[0026] Figure 7 This is a partial structural schematic diagram of a device for cleaning residual casting sand from the surface of a large casting mold according to the present invention.

[0027] Figure 8 This is a schematic diagram of the first cleaning mechanism of a large casting mold surface residual casting sand cleaning device according to the present invention;

[0028] Figure 9 This is a schematic diagram of the second cleaning mechanism of a large casting mold surface residual casting sand cleaning device according to the present invention.

[0029] In the picture:

[0030] 1. Crossbeam mechanism; 101. Mounting beam; 102. Hook; 103. Auxiliary handle; 104. Sliding groove; 2. Traveling mechanism; 201. Traveling frame; 202. Threaded screw; 203. Forward and reverse motor; 204. Sliding seat; 3. First clamping mechanism; 301. First clamping plate; 302. Long bolt; 303. Second clamping plate; 304. First adjusting bolt; 305. First anti-slip groove; 306. First limit switch; 4. Second clamping mechanism; 401. Third clamping plate; 402. 403. Fourth clamping plate; 404. Second adjusting bolt; 405. Second anti-slip groove; 406. Second limit switch; 507. First cleaning mechanism; 508. Mounting plate; 509. Pulley; 5000. Drive motor; 5001. First cleaning roller; 5002. First brush bristles; 501. Meshing teeth; 502. Transmission belt; 503. First bevel gear; 6002. Second cleaning mechanism; 601. Connecting plate; 602. Mounting bracket; 603. Second cleaning roller; 604. Second brush bristles; 605. Second bevel gear. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figure 1-9This invention provides a technical solution: a device for cleaning residual casting sand on the surface of a large casting mold, comprising: a crossbeam mechanism 1, a traveling mechanism 2, a first clamping mechanism 3, a second clamping mechanism 4, a first cleaning mechanism 5, and a second cleaning mechanism 6. The traveling mechanism 2 is located at the bottom of the crossbeam mechanism 1. The first clamping mechanism 3 and the second clamping mechanism 4 are symmetrically arranged on both sides of the crossbeam mechanism 1. The first cleaning mechanism 5 is located at the bottom of the traveling mechanism 2. There are two second cleaning mechanisms 6, symmetrically arranged on both sides of the first cleaning mechanism 5. The first cleaning mechanism 5 includes two mounting plates 501 and a second cleaning mechanism 6. A cleaning roller 504 is provided. A pulley 502 is rotatably connected between the outer surfaces of two mounting plates 501. A drive motor 503 is fixedly mounted on the front outer surface of one of the mounting plates 501. The output end of the drive motor 503 slides through the outer surface of the mounting plate 501 and is fixedly connected to the pulley 502. The first cleaning roller 504 is located below the pulley 502. A meshing tooth 506 is provided on the outer surface of the first cleaning roller 504 near the middle position. A transmission belt 507 meshes between the outer surfaces of the pulley 502 and the meshing tooth 506. First bevel gears 508 are symmetrically fixedly connected to both ends of the first cleaning roller 504.

[0033] like Figure 2 , Figure 5 and Figure 9 As shown, the second cleaning mechanism 6 includes a connecting plate 601, which is fixedly connected to the outer surface of the mounting plate 501. A mounting bracket 602 is fixedly connected to the outer surface of the connecting plate 601 away from the mounting plate 501. A second cleaning roller 603 is rotatably connected between the inner top and inner bottom of the mounting bracket 602. The outer surface of the first bevel gear 508 slides through the outer surface of the mounting bracket 602 and extends to the outside. The connecting plate 601 serves to connect the mounting bracket 602 and the mounting plate 501. The mounting bracket 602 serves to install the second cleaning roller 603. The shaft of the first bevel gear 508 for connection passes through the surface of the mounting bracket 602, and the gear part is located on the other side of the mounting bracket 602.

[0034] like Figure 2 , Figure 5 , Figure 8 and Figure 9As shown, a second bevel gear 605 is fixedly connected to the bottom of the second cleaning roller 603. The outer surface of the second bevel gear 605 slides through the outer surface of the mounting frame 602 and extends downwards. The second bevel gear 605 meshes with the first bevel gear 508. The outer surface of the first cleaning roller 504 is provided with first bristles 505, and the outer surface of the second cleaning roller 603 is provided with second bristles 604. The shaft used for connection of the second bevel gear 605 passes through the surface of the mounting frame 602, and the gear part is located below the mounting frame 602. Since the surfaces of the first bevel gear 508 and the second bevel gear 605 mesh, the second cleaning roller 603 achieves the effect of rotating synchronously with the first cleaning roller 504. Only one drive motor 503 is needed to operate, saving costs. The first bristles 505 and the second bristles 604 are both steel wire bristles, which can effectively clean the casting sand remaining inside the casting mold.

[0035] like Figures 1-3 As shown, the crossbeam mechanism 1 includes a mounting beam 101. A hook 102 is fixedly installed at the top center of the mounting beam 101. Auxiliary handles 103 are fixedly installed on the front and rear outer surfaces of the mounting beam 101. Sliding grooves 104 are symmetrically opened on the two outer surfaces of the mounting beam 101. The hook 102 installed on the top of the mounting beam 101 is mainly used for hoisting the device by a crane. Holding the auxiliary handles 103 facilitates manual assistance in connecting the device with the casting mold. With the cooperation of both, the device is easy to use.

[0036] like Figure 1 , Figure 2 and Figure 4 As shown, the walking mechanism 2 includes a walking frame 201, which is fixedly connected to the bottom of the mounting beam 101. A threaded screw 202 is rotatably connected between the inner and outer walls of the walking frame 201. A forward and reverse motor 203 is fixedly installed on the front surface of the walking frame 201. A sliding seat 204 is slidably embedded inside the walking frame 201. The output end of the forward and reverse motor 203 slides through the outer surface of the walking frame 201 and extends into the interior. The output end of the forward and reverse motor 203 is fixedly connected to the front end of the threaded screw 202. The interior of the walking frame 201 is hollow. After the sliding seat 204 is embedded inside, it can slide horizontally back and forth. By starting the forward and reverse motor 203, the threaded screw 202 inside the walking frame 201 can be rotated.

[0037] like Figure 2 , Figure 4 , Figure 7 and Figure 8As shown, the threaded screw 202 has its outer surface threaded through the outer surface of the sliding seat 204. Two mounting plates 501 are symmetrically fixedly connected to the bottom of the sliding seat 204. Since the threaded screw 202 has its threaded through the sliding seat 204, the screw 202 rotates to drive the sliding seat 204 to move back and forth. The mounting plates 501 are welded to the bottom of the sliding seat 204.

[0038] like Figures 1-3 and Figure 5 As shown, the first clamping mechanism 3 includes a first clamping plate 301 and a second clamping plate 303. A long bolt 302 is installed on one outer surface of the first clamping plate 301. The inner surface of the first clamping plate 301 is in contact with the outer surface of the mounting beam 101. The long bolt 302 slides through the outer surface of the mounting beam 101 to connect the first clamping plate 301 and the mounting beam 101. The inner top and the inner surfaces of both sides of the first clamping plate 301 are in contact with the surface of the mounting beam 101. The long bolt 302 on the surface passes through the first clamping plate 301 and the mounting beam 101 and is fixed by a nut, so that the first clamping plate 301 cannot move on the mounting beam 101 and is easy to disassemble and assemble, improving the efficiency of later maintenance.

[0039] like Figures 1-3 and Figure 5 As shown, the front surface of the second clamping plate 303 is threadedly connected to the first adjusting bolt 304. The rear end of the first adjusting bolt 304 is rotatably connected to the front surface of the first clamping plate 301. The second clamping plate 303 and the sliding groove 104 are slidably embedded. Under the action of the sliding groove 104, the second clamping plate 303 can only move back and forth outside the mounting beam 101. At this time, rotating the first adjusting bolt 304 can drive the second clamping plate 303 to move closer to or away from the first clamping plate 301. After the two are tightly fitted, they can fix and clamp the surface of the casting mold.

[0040] like Figures 1-3 and Figure 6As shown, the second clamping mechanism 4 includes a third clamping plate 401 and a fourth clamping plate 402. A second adjusting bolt 403 is threaded through the rear surface of the fourth clamping plate 402. The front end of the second adjusting bolt 403 is rotatably connected to the rear surface of the third clamping plate 401. Both the third clamping plate 401 and the fourth clamping plate 402 are slidably embedded on the outer surface of the mounting beam 101. When the first clamping mechanism 3 and the casting mold are clamped and fixed, the mounting beam 101 is connected to the casting mold. At this time, after rotating the second adjusting bolt 403, the third clamping plate 401 and the fourth clamping plate 402 move closer to each other, thereby clamping and fixing the other side of the casting mold. After the clamping and fixing is completed, the second clamping mechanism 4 cannot continue to slide on the mounting beam 101, and it also serves to connect the rear ends of the two mounting beams 101 and the casting mold, improving stability. Moreover, the structure is simple and the operation is convenient.

[0041] like Figures 1-3 , Figure 5 and Figure 6 As shown, the outer surfaces of the first clamping plate 301 and the second clamping plate 303 on opposite sides near the bottom are provided with first anti-slip grooves 305. The outer surfaces of the third clamping plate 401 and the fourth clamping plate 402 on opposite sides near the bottom are provided with second anti-slip grooves 404. A first limit switch 306 is installed on the rear surface of the first clamping plate 301 near the bottom, and a second limit switch 405 is installed on the front surface of the third clamping plate 401 near the bottom. The first limit switch 306 and the second limit switch 405 correspond to the positions of the connecting plate 601. The first anti-slip grooves 305 are used to improve the gripping effect of the first clamping plate 301 and the fourth clamping plate 402. The clamping effect of the second clamping plate 303 is enhanced by the second anti-slip groove 404, which improves the clamping effect of the third clamping plate 401 and the fourth clamping plate 402. The first limit switch 306 and the second limit switch 405 are connected to the forward and reverse motor 203 through wiring. When the connecting plate 601 in the second cleaning mechanism 6 moves back and forth and touches the first limit switch 306 or the second limit switch 405, it controls the forward and reverse motor 203 to automatically adjust the rotation direction, thereby driving the first cleaning mechanism 5 and the second cleaning mechanism 6 to move in opposite directions, thus repeatedly cleaning the inside of the casting mold. The degree of automation is high and the cleaning effect is good.

[0042] The method of use and working principle of this device: In use, the lifting hook of a small crane is hooked onto the hook 102 at the top of the mounting beam 101 in this device. The device is then lifted off the ground and moved above the large casting mold. When lowering it, two workers hold the two auxiliary handles 103 and adjust their position so that the surface of the first clamping plate 301 is in contact with the inner surface of the large casting mold. Then, by rotating the first adjusting bolt 304, the second clamping plate 303 is moved towards the first clamping plate 301 and presses against the outer surface of the casting mold, thus fixing the mounting beam 101 in place. Then, the second... After the adjusting bolt 403 drives the third clamping plate 401 and the fourth clamping plate 402 to move closer together, they abut against the inner and outer surfaces of the casting mold, thereby fixing the other end of the mounting beam 101, improving the stability of the device, and ensuring the subsequent cleaning effect. Then, the forward and reverse motor 203 and the drive motor 503 are started. After the drive motor 503 starts, it drives the pulley 502 to rotate at high speed. Under the action of the meshing teeth 506 on the surface of the transmission belt 507 and the first cleaning roller 504, the first cleaning roller 504 is driven to rotate at high speed. When the first cleaning roller 504 rotates, it drives the first bevel gear 508 at both ends to rotate. When the first bevel gear 508 rotates, it drives the second... When the bevel gear 605 rotates, it drives the two second cleaning rollers 603 to rotate at high speed. Only one drive motor 503 is needed for operation, saving costs. When the first cleaning roller 504 rotates at high speed, the first bristles 505 on its surface clean the casting sand remaining on the bottom surface inside the casting mold. When the second cleaning roller 603 rotates at high speed, the second bristles 604 on its surface clean the casting sand on the front and back sides inside the casting mold. At this time, the forward and reverse motor 203 drives the threaded screw 202 to rotate, which in turn moves the sliding seat 204 back and forth, thereby driving the first cleaning rollers in the first cleaning mechanism 5 and the second cleaning mechanism 6. The first cleaning mechanism 5 and the second cleaning roller 603 rotate and move back and forth inside the casting mold, thereby cleaning most of the casting sand remaining inside the casting mold. The working efficiency is high. At the same time, when the first cleaning mechanism 5 and the second cleaning mechanism 6 move to the farthest front and rear sides inside the casting mold, the connecting plate 601 in the second cleaning mechanism 6 presses against the first limit switch 306 or the second limit switch 405, thereby causing the forward and reverse motors 203 to rotate in opposite directions. This causes the first cleaning roller 504 and the second cleaning roller 603 to move back and forth in a circular motion inside the casting mold, which improves the cleaning effect, simplifies manual operation, has a high degree of automation, and further improves the working efficiency.

[0043] The wiring diagrams of the forward / reverse motor 203, the first limit switch 306, the second limit switch 405, and the drive motor 503 in this invention are common knowledge in the field, and their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control methods and wiring arrangements of the forward / reverse motor 203, the first limit switch 306, the second limit switch 405, and the drive motor 503 will not be explained in detail.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for cleaning residual casting sand from the surface of a large casting mold, characterized in that, include: The structure includes a beam mechanism (1), a walking mechanism (2), a first clamping mechanism (3), a second clamping mechanism (4), a first cleaning mechanism (5), and a second cleaning mechanism (6). The walking mechanism (2) is located at the bottom of the beam mechanism (1). The first clamping mechanism (3) and the second clamping mechanism (4) are symmetrically arranged on both sides of the beam mechanism (1). The first cleaning mechanism (5) is located at the bottom of the walking mechanism (2). The number of second cleaning mechanisms (6) is set to two, and the two second cleaning mechanisms (6) are symmetrically arranged on both sides of the first cleaning mechanism (5). The first cleaning mechanism (5) includes two mounting plates (501) and a first cleaning roller (504). A pulley (502) is rotatably connected between the outer surfaces of the two mounting plates (501). A drive motor (503) is fixedly mounted on the front outer surface of one of the mounting plates (501). The output end of the drive motor (503) slides through the outer surface of the mounting plate (501) and is fixedly connected to the pulley (502). The first cleaning roller (504) is located below the pulley (502). A meshing tooth (506) is provided on the outer surface of the first cleaning roller (504) near the middle position. A transmission belt (507) meshes between the outer surfaces of the pulley (502) and the meshing tooth (506). First bevel gears (508) are symmetrically fixedly connected to both ends of the first cleaning roller (504). The second cleaning mechanism (6) includes a connecting plate (601), which is fixedly connected to the outer surface of the mounting plate (501). A mounting bracket (602) is fixedly connected to the outer surface of the connecting plate (601) away from the mounting plate (501). A second cleaning roller (603) is rotatably connected between the inner top and inner bottom of the mounting bracket (602). The outer surface of the first bevel gear (508) slides through the outer surface of the mounting bracket (602) and extends to the outside. The bottom of the second cleaning roller (603) is fixedly connected to a second bevel gear (605). The outer surface of the second bevel gear (605) slides through the outer surface of the mounting bracket (602) and extends downward. The second bevel gear (605) and the first bevel gear (508) are meshed together. The outer surface of the first cleaning roller (504) is provided with first bristles (505), and the outer surface of the second cleaning roller (603) is provided with second bristles (604).

2. The device for cleaning residual casting sand from the surface of a large casting mold according to claim 1, characterized in that: The beam mechanism (1) includes a mounting beam (101), a hook (102) is fixedly installed at the top center of the mounting beam (101), auxiliary handles (103) are fixedly installed on the front and rear outer surfaces of the mounting beam (101), and sliding grooves (104) are symmetrically opened on the two outer surfaces of the mounting beam (101).

3. The device for cleaning residual casting sand from the surface of a large casting mold according to claim 2, characterized in that: The walking mechanism (2) includes a walking frame (201), which is fixedly connected to the bottom of the mounting beam (101). A threaded screw (202) is rotatably connected between the inner and outer walls of the walking frame (201). A forward and reverse motor (203) is fixedly installed on the front surface of the walking frame (201). A sliding seat (204) is slidably embedded inside the walking frame (201). The output end of the forward and reverse motor (203) slides through the outer surface of the walking frame (201) and extends into the interior. The output end of the forward and reverse motor (203) is fixedly connected to the front end of the threaded screw (202).

4. The device for cleaning residual casting sand from the surface of a large casting mold according to claim 3, characterized in that: The threaded screw (202) has its outer surface threaded through the outer surface of the sliding seat (204), and the two mounting plates (501) are symmetrically fixedly connected to the bottom of the sliding seat (204).

5. The device for cleaning residual casting sand on the surface of a large casting mold according to claim 4, characterized in that: The first clamping mechanism (3) includes a first clamping plate (301) and a second clamping plate (303). A long bolt (302) is installed on one outer surface of the first clamping plate (301). The inner wall of the first clamping plate (301) is in contact with the outer surface of the mounting beam (101). The long bolt (302) slides through the outer surface of the mounting beam (101) to connect the first clamping plate (301) and the mounting beam (101).

6. The device for cleaning residual casting sand from the surface of a large casting mold according to claim 5, characterized in that: The front surface of the second clamping plate (303) is threadedly connected to the first adjusting bolt (304), the rear end of the first adjusting bolt (304) is rotatably connected to the front surface of the first clamping plate (301), and the second clamping plate (303) and the sliding groove (104) are slidably embedded.

7. The device for cleaning residual casting sand from the surface of a large casting mold according to claim 6, characterized in that: The second clamping mechanism (4) includes a third clamping plate (401) and a fourth clamping plate (402). The rear surface of the fourth clamping plate (402) is threadedly connected to a second adjusting bolt (403). The front end of the second adjusting bolt (403) is rotatably connected to the rear surface of the third clamping plate (401). Both the third clamping plate (401) and the fourth clamping plate (402) are slidably embedded on the outer surface of the mounting beam (101).

8. The device for cleaning residual casting sand from the surface of a large casting mold according to claim 7, characterized in that: The first clamping plate (301) and the second clamping plate (303) have a first anti-slip groove (305) on their opposite outer surfaces near the bottom. The third clamping plate (401) and the fourth clamping plate (402) have a second anti-slip groove (404) on their opposite outer surfaces near the bottom. The first limit switch (306) is installed on the rear surface of the first clamping plate (301) near the bottom. The second limit switch (405) is installed on the front surface of the third clamping plate (401) near the bottom. The first limit switch (306) and the second limit switch (405) are both located opposite to the connecting plate (601).

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