A metal cleaning equipment for workshop

Abstract

The present invention discloses a workshop metal cleaning equipment, which belongs to the technical field of workshop equipment, and includes a cleaning box, a transfer box, and a cleaning box which are arranged in sequence. The two sides of the cleaning box are symmetrically hinged with cover plates that close the cleaning box. The interior of the transfer box is hollow and connected to the cleaning box. The bottom of the cleaning box is open and rotatably installed with a rotating shaft. Cleaning brushes are distributed in an array on the outer wall of the rotating shaft. Both ends of the rotating shaft are fixedly installed with driving wheels, and a worm gear is fixedly installed between one end and the driving wheel. A worm is meshed above the worm gear, and the worm is fixedly connected to a power rod at one end of the transfer box. A through hole is provided through the transmission box at a position corresponding to the power rod, and the power rod extends into the interior of the cleaning box through the through hole. A conveying rack is installed at the lower end of the interior of the transfer box at a position corresponding to the power rod. The workshop metal cleaning equipment has high quality for workshop metal cleaning and is recommended for wide use.

Description

Technical Field

[0001] The invention belongs to the technical field of workshop equipment, and in particular relates to a metal cleaning equipment for a workshop. Background Art

[0002] The workshop is the basic unit for organizing production within an enterprise and is also the first-level organization for production administration. It consists of several work sections or production teams. It is set up according to the professional nature of each stage of product production or each component of the product and the professional nature of each auxiliary production activity within the enterprise. It has the necessary factory buildings or sites, machinery and equipment, tools and a certain number of production personnel, technicians and managers to complete the production tasks.

[0003] With the continuous standardization of workshop management, the hygiene requirements of workshops are also increasing. In metal production workshops, workers will clean up metal debris. Metal debris is different from ordinary garbage. Due to its heavy weight, it is not easy to clean it with a traditional broom. When using exhaust equipment, it is very easy to suck in other garbage, which needs to be separated later, resulting in troublesome cleaning process. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that metal scraps are different from ordinary garbage and are difficult to clean using a traditional broom. When using an exhaust device, the remaining garbage is easily sucked in and needs to be separated later, resulting in troublesome cleaning process. A workshop metal cleaning device is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A workshop metal cleaning equipment, comprising a cleaning box, a transfer box, and a cleaning box arranged in sequence, the two sides of the cleaning box are symmetrically hinged with cover plates closing the cleaning box, the interior of the transfer box is hollow and connected to the cleaning box, the bottom of the cleaning box is open and rotatably mounted with a rotating shaft, the outer wall of the rotating shaft is arrayed with cleaning brushes, both ends of the rotating shaft are fixedly mounted with driving wheels, and a worm wheel is fixedly mounted between one end and the driving wheel, a worm is meshed with the top of the worm wheel, and the end of the worm facing the transfer box is fixedly connected to a power rod;

[0007] The transmission box is provided with a through hole at a position corresponding to the power rod, and the power rod extends into the interior of the cleaning box through the through hole. A conveying frame is installed at the lower end of the interior of the conveying box at a position corresponding to the power rod, and a belt rotating toward the conveying box is installed on the inner side of the conveying frame. A plurality of magnetic strips are distributed at intervals on the surface of the belt, and transmission holes are distributed at intervals on the surface of the belt between the plurality of magnetic strips.

[0008] The conveying frame extends into the interior of the cleaning box, and a scraping mechanism corresponding to the tail of the conveying frame is arranged in the cleaning box. The scraping mechanism comprises a conveying toothed disc and a cleaning disc corresponding to the concave and convex shapes of the magnetic strip and the belt.

[0009] The sweeping box, transfer box and cleaning box work together to absorb and store metal debris in the workshop, and finally clear them out from the inside of the sweeping box, which meets the workshop's demand for metal sweeping, improves the environmental hygiene of the workshop, and increases the efficiency of metal sweeping.

[0010] Preferably, the driving wheel is rotatably mounted at the bottom of the cleaning box, and the outer circumferential surface of the driving wheel is in contact with the ground, and a moving wheel flush with the driving wheel is mounted on the bottom end surface of the cleaning box.

[0011] Thanks to the setting of the driving wheel, the power rod has the power to rotate, thereby achieving the effect of metal transfer and cleaning.

[0012] Preferably, two sets of gears 1 are equidistantly distributed outside the power rod, the gear 1 is meshed with the gear 2, the gear 2 is fixedly connected to the roller, and the roller is rotatably installed on both sides of the transmission frame to support the belt.

[0013] Thanks to the transmission of gear one and gear two, the power rod can transmit the rotational force to the belt, so that the belt can absorb and transport the debris during the movement of the cleaning box.

[0014] Preferably, one end of the power shaft away from the worm gear extends toward the interior of the cleaning box and is rotatably connected thereto, and a transmission tooth 1 is fixedly sleeved on the outside of the power rod, and the transmission tooth 1 is meshed with a transmission tooth 2, and the transmission tooth 2 is rotatably installed in the interior of the cleaning box, and a convex shaft is integrally constructed on the center surface of the transmission tooth 2, and a transmission belt 1 is sleeved on the outside of the convex shaft, and a transmission tooth 3 is sleeved on the other end of the transmission belt 1, and a transmission tooth 4 is meshed and connected below the transmission tooth 3, and the transmission tooth 4 is rotatably installed in the cleaning box and fixedly connected to the axle of an active cleaning wheel, the active cleaning wheel and the transmission tooth 4 are coaxially distributed, and a transmission belt 2 is also sleeved on the axle, and the two ends of the transmission belt 2 are respectively sleeved with the axle of an auxiliary cleaning wheel.

[0015] Thanks to the arrangement of transmission tooth one, transmission tooth two, transmission tooth three and transmission tooth four, the active cleaning wheel and the auxiliary cleaning wheel can rotate to transfer the metal debris, so that the metal debris is transferred to the tail of the receiving plate.

[0016] Preferably, a receiving plate is provided under the tail of the conveying frame, the scraper mechanism is located at one end of the receiving plate close to the conveying frame, a scraper plate is installed at one end of the receiving plate close to the scraper mechanism, the top of the scraper plate is inclined toward the top of the receiving plate, and the scraper plate is attached to the magnetic strip, the inside of the receiving plate is provided with a plurality of material feeding troughs, a material feeding rod is rotatably installed inside the material feeding trough, and a driving motor connected to the material feeding rod is installed on the back of the receiving plate.

[0017] Thanks to the cooperation between the scraper plate and the magnetic strip, the metal debris on the magnetic strip can be effectively separated, so that the metal debris is blocked from falling into the receiving plate.

[0018] Preferably, the transmission toothed disc and the cleaning disc are staggered, a plurality of transmission blocks with matching transmission holes are protruded and spaced apart on the outer circumference of the transmission toothed disc, and a brush is provided on the outer circumference of the cleaning disc.

[0019] Thanks to the setting of the transmission gear plate, the belt drives the cleaning plate to rotate while rotating, which can transmit power and achieve the effect of preliminary scraping of metal debris.

[0020] Preferably, the cleaning disc and the transmission gear disc are both fixedly sleeved on the outside of the connecting shaft, and fixed blocks are rotatably mounted on both ends of the connecting shaft.

[0021] Thanks to the setting of the connecting shaft, the transmission gear disc can transmit power to the cleaning disc during the rotation process, so that the cleaning disc and the transmission gear disc can rotate synchronously.

[0022] Preferably, the fixing block is fixedly mounted on a bracket, and the bracket is fixedly mounted on the upper ends of both sides of the material receiving plate.

[0023] Thanks to the setting of the bracket, the scraper mechanism can be supported, and the scraper assembly has a rotatable effect through the setting of the fixed block.

[0024] In summary, the technical effects and advantages of the present invention are as follows: the metal cleaning equipment for the workshop absorbs and stores the metal debris in the workshop through the linkage of the cleaning box, the transfer box and the cleaning box, and finally cleans them out uniformly from the inside of the cleaning box, thereby meeting the demand for metal cleaning in the workshop, improving the environmental sanitation of the workshop, and increasing the efficiency of metal cleaning;

[0025] Thanks to the cooperation between the belt and the magnetic strip, the metal debris moved by the cleaning brush can be absorbed and quickly transferred from the conveyor frame to the inside of the cleaning box, thereby improving the cleaning quality of the metal debris. Through the setting of the scraper assembly, in conjunction with the convexity and concavity of the belt and the magnetic strip, the metal debris stuck on the magnetic strip can be removed, and the cleaning disk can be rotated through the power connection transmission. Compared with the electric-driven cleaning in the prior art, it can effectively reduce the operating energy consumption, so that the metal debris can be sucked in, transmitted to removed, all of which can be achieved through the movement of the cleaning box, and it is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the transmission box and the cleaning box in the separated state;

[0028] Figure 3 It is a schematic diagram of the local structure of the connection between the power rod and the roller;

[0029] Figure 4 This is a schematic diagram of the internal structure of the cleaning box;

[0030] Figure 5 for Figure 4 The enlarged structural diagram at A in the middle;

[0031] Figure 6 for Figure 4 The enlarged structural diagram at B in the middle;

[0032] Figure 7 It is a schematic diagram of the structure of the material receiving plate;

[0033] Figure 8 It is a schematic diagram of the scraper mechanism structure.

[0034] In the figure: 1. sweeping box; 2. conveying box; 3. cleaning box; 4. cover plate; 5. conveying frame; 6. perforation; 7. magnetic strip; 8. gear one; 9. power rod; 10. worm; 11. worm wheel; 12. rotating shaft; 13. cleaning brush; 14. driving wheel; 15. transmission hole; 16. belt; 18. gear two; 19. roller; 20. receiving plate; 21. feeding rod; 22. feeding trough; 23. bracket; 25. driving motor; 26. conveying tooth disc; 27. cleaning disc; 28. scraper plate; 29. ​​fixing block; 30. conveying tooth two; 31. conveying tooth one; 33. conveying tooth three; 34. auxiliary cleaning wheel; 35. conveying tooth four; 36. active cleaning wheel; 37. scraper mechanism; 38. connecting shaft. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] Reference Figure 1 , Figure 2A metal cleaning equipment for a workshop comprises a cleaning box 1, a transfer box 2, and a cleaning box 3 which are arranged in sequence. The two sides of the cleaning box 1 are symmetrically hinged with a cover plate 4 which closes the cleaning box 1. The interior of the transfer box 2 is hollow and connected with the cleaning box 1. The bottom of the cleaning box 3 is open and rotatably mounted with a rotating shaft 12. Cleaning brushes 13 are arranged in an array on the outer wall of the rotating shaft 12. Driving wheels 14 are fixedly mounted at both ends of the rotating shaft 12, and a worm gear 11 is fixedly mounted between one end and the driving wheel 14. A worm 10 is meshed above the worm gear 11, and the end of the worm gear 10 facing the transfer box 2 is fixedly connected to a power rod 9. The worm gear 11 rotates synchronously with the rotating shaft 12, and the driving wheel 14 rotates during the pushing process of the cleaning box 3, driving the rotating shaft 12 to rotate.

[0037] A through hole 6 is provided at the position of the transmission box corresponding to the power rod 9, and the power rod 9 extends into the interior of the cleaning box 1 through the through hole 6. A transmission frame 5 is installed at the position of the power rod 9 at the inner lower end of the transmission box 2, and a belt 16 rotating toward the transmission box 2 is installed on the inner side of the transmission frame 5. A plurality of magnetic strips 7 are distributed at intervals on the surface of the belt 16, and transmission holes 15 are distributed at intervals on the surface of the belt 16 between the plurality of magnetic strips 7. The transmission direction of the worm wheel 11 and the worm 10 is that the worm 10 rotates toward the belt 16.

[0038] Reference Figure 2 The driving wheel 14 is rotatably mounted on the bottom of the cleaning box 3, and the outer cylindrical surface of the driving wheel 14 contacts the ground, and the bottom end surface of the cleaning box 1 is equipped with a moving wheel flush with the driving wheel 14. The bottom of the cleaning box 1 has a moving wheel, and the moving wheel includes a moving wheel for turning.

[0039] Reference Figure 3 Two sets of gears 1 8 are evenly distributed outside the power rod 9, and the gear 1 8 meshes with the gear 2 18, and the gear 2 18 is fixedly connected to the roller 19, and the roller 19 is rotatably installed on both sides of the transmission frame to support the belt 16. When the power rod 9 rotates, the gear 1 8 fixedly arranged outside drives the gear 2 18 to rotate, so that the roller 19 fixedly connected to the gear 2 18 rotates, and then the belt 16 has a transmission effect as the roller 19 rotates, and the roller 19 rotates toward the direction of the cleaning box 1.

[0040] Reference Figure 5 , Figure 7 , Figure 8 The conveyor frame 5 extends into the interior of the cleaning box 1, and a scraper mechanism 37 corresponding to the tail of the conveyor frame 5 is provided in the cleaning box 1. The scraper mechanism 37 includes a corresponding magnetic strip 7 ( Figure 2 shown) with belt 16 ( Figure 2) The transmission toothed disc 26 and the cleaning disc 27 are shown in a concave-convex shape. The transmission hole 15 cooperates with the transmission toothed disc 26 so that the transmission toothed disc 26 is forced to rotate and drives the connecting shaft 38 to rotate. When the connecting shaft 38 rotates, the cleaning disc 27 rotates to remove the metal debris adsorbed on the magnetic strip 7.

[0041] Reference Figure 6 The end of the power rod 9 away from the worm gear 11 extends toward the interior of the cleaning box 1 and is rotatably connected thereto. A transmission tooth 1 31 is fixedly sleeved on the outside of the power rod 9. The transmission tooth 1 31 meshes with the transmission tooth 2 30. The transmission tooth 2 30 is rotatably installed in the cleaning box 1. The center surface of the transmission tooth 2 30 is integrally constructed with a convex shaft. The outside of the convex shaft is sleeved with a transmission belt 1. The other end of the transmission belt 1 is sleeved with a transmission tooth 33. The convex shaft and the transmission belt 1 are toothed chain transmission. A transmission tooth 4 35 is meshed and connected below the transmission tooth 33. The transmission tooth 4 35 is rotatably installed in the cleaning box 1 and fixedly connected to the axle of an active cleaning wheel 36. The active cleaning wheel 36 is cocentrically distributed with the transmission tooth 4 35. A transmission belt 2 is also sleeved on the axle, and the two ends of the transmission belt 2 are respectively sleeved with the axle of an auxiliary cleaning wheel 34. The wheel axle is a cylindrical structure, which is a cylindrical protrusion structure protruding from the center surface of each gear. The cylindrical protrusion structure is used for the installation and transmission of each gear. The transmission between the gears is a toothed chain connection. The transmission tooth 1 31 rotates with the rotation of the power rod 9. When the transmission tooth 2 30 rotates, the transmission tooth 3 33 is driven to rotate through the transmission belt 1. The transmission tooth 3 33 engages with the transmission tooth 4 35 to rotate. The rotation direction of the transmission tooth 2 30 is changed by the transmission tooth 3 33, and the transmission tooth 4 35 obtains the force to rotate the active cleaning wheel 36 to clean the metal debris.

[0042] Reference Figure 5 A receiving plate 20 is provided below the tail of the conveyor frame 5, and a scraper mechanism 37 is located at one end of the receiving plate 20 close to the conveyor frame 5. A scraper plate 28 is installed at one end of the receiving plate 20 close to the scraper mechanism 37. The top of the scraper plate 28 is inclined toward the upper side of the receiving plate 20, and the scraper plate 28 is attached to the magnetic strip 7 ( Figure 2 As shown, the receiving plate 20 has a plurality of feeding troughs 22 inside, and a feeding rod 21 is rotatably installed inside the feeding trough 22. A driving motor 25 connected to the feeding rod 21 is installed on the back of the receiving plate 20. When the driving motor 25 is started, the feeding rod 21 rotates. The feeding rod 21 is spiral-shaped and moves the metal scraps toward the recessed position of the receiving plate 20. The driving motor 25 can drive the multiple feeding rods 21 to rotate synchronously through the cooperation of chains and gears, and the driving motors 25 can also be installed separately so that the multiple feeding rods 21 have independent power sources to rotate.

[0043] Reference Figure 7 , Figure 8The transmission toothed disc 26 and the cleaning disc 27 are arranged in an interlaced manner. The outer circumferential surface of the transmission toothed disc 26 is protruded and spaced with multiple groups of transmission blocks provided with adapted transmission holes 15. The outer circumferential surface of the cleaning disc 27 is provided with a brush. The cleaning disc 27 and the transmission toothed disc 26 are both fixedly sleeved on the outside of the connecting shaft 38. Both ends of the connecting shaft 38 are rotatably mounted with fixed blocks 29. The fixed blocks 29 are fixedly mounted on the bracket 23, and the bracket 23 is fixedly mounted on the upper ends of both sides of the receiving plate 20. The fixed blocks 29 are used to support the connecting shaft 38 so that the connecting shaft 38 has the power of self-rotation.

[0044] Working principle: When in use, the handle provided on the sweeping box 1 pushes the conveying box 2 and the cleaning box 3. When the cleaning box 3 moves, the driving wheel 14 at the bottom of the cleaning box 3 rotates, and the driving wheel 14 drives the cleaning brush 13 to rotate through the rotating shaft 12. The cleaning brush 13 pushes the nearby debris toward the conveying box 2. With the rotation of the rotating shaft 12, the worm gear 11 rotates synchronously, and then the worm 10 rotates. The spiral direction of the worm 10 is set to drive the power rod 9 to rotate toward the direction of the belt 16, and then the gear 1 8 on the power rod 9 drives the gear 2 18 to rotate. The second wheel 18 is arranged inside the conveying frame 5. After the second gear 18 rotates, the roller 19 rotates accordingly. The rotation of the roller 19 causes the belt 16 sleeved on the outside to rotate. After the belt 16 has a rotating force, the metal debris moved by the cleaning brush 13 is adsorbed by the adsorption force of the magnetic strip 7 and is transmitted toward the cleaning box 1. The receiving plate 20 inside the conveying box 2 scrapes the metal debris on the magnetic strip 7. When the belt 16 rotates, the transmission toothed disc 26 is forced to rotate through the cooperation of the transmission hole 15 and the transmission toothed disc 26, and drives the connecting shaft 38 to rotate, and the connecting shaft 38 is connected. When the shaft 38 rotates, the cleaning disk 27 rotates to remove the metal debris adsorbed on the magnetic strip 7. Some metal debris with strong adsorption is scraped off when the magnetic strip 7 moves to the scraper plate 28, and the metal debris falls into the inside of the feeding trough 22. The driving motor 25 is started, and the feeding rod 21 rotates. The feeding rod 21 is spiral, and the metal debris is moved toward the concave position of the receiving plate 20. A transmission tooth 31 is also provided on the outer wall of the power rod 9. The transmission tooth 31 meshes with the transmission tooth 30. The transmission tooth 31 rotates with the rotation of the power rod 9. When the transmission tooth 30 rotates The transmission tooth three 33 is driven to rotate through the transmission belt one, and the transmission tooth three 33 engages the transmission tooth four 35 to rotate. The transmission tooth three 33 changes the rotation direction of the transmission tooth two 30, and the transmission tooth four 35 obtains the force to rotate the active cleaning wheel 36 to clean the metal debris. The transmission belt two makes the two auxiliary cleaning wheels 34 rotate accordingly, and the metal debris is moved toward the position of the receiving plate 20 close to the cover plate 4. Then the cover plate 4 is opened to clean the metal debris inside the cleaning box 1. The workshop metal cleaning equipment has high quality for workshop metal cleaning and is recommended for wide use.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A workshop metal cleaning device, comprising a cleaning box (1), a transfer box (2), and a cleaning box (3) arranged in sequence, characterized in that: The two sides of the cleaning box (1) are symmetrically hinged with cover plates (4) for closing the cleaning box (1); the interior of the conveying box (2) is hollow and communicated with the cleaning box (1); the bottom of the cleaning box (3) is open and rotatably mounted with a rotating shaft (12); cleaning brushes (13) are arranged in an array on the outer wall of the rotating shaft (12); driving wheels (14) are fixedly mounted on both ends of the rotating shaft (12); a worm gear (11) is fixedly mounted between one end and the driving wheel (14); a worm (10) is meshed above the worm gear (11); and one end of the worm gear (10) facing the conveying box (2) is fixedly connected to a power rod (9); The conveying box (2) is provided with a through hole (6) at a position corresponding to the power rod (9), the power rod (9) passes through the through hole (6) and extends into the interior of the cleaning box (1), a conveying frame (5) is installed at the lower end of the interior of the conveying box (2) at a position corresponding to the power rod (9), a belt (16) rotating toward the conveying box (2) is installed on the inner side of the conveying frame (5), a plurality of magnetic strips (7) are distributed at intervals on the surface of the belt (16), and transmission holes (15) are distributed at intervals on the surface of the belt (16) between the plurality of magnetic strips (7); The conveyor frame (5) extends into the interior of the cleaning box (1), and a scraper mechanism (37) corresponding to the tail of the conveyor frame (5) is provided in the cleaning box (1), and the scraper mechanism (37) includes a conveyor toothed disc (26) and a cleaning disc (27) having a concave and convex shape corresponding to the magnetic strip (7) and the belt (16); the driving wheel (14) is rotatably mounted on the bottom of the cleaning box (3), and the outer circumferential surface of the driving wheel (14) contacts the ground, and a moving wheel flush with the driving wheel (14) is installed on the bottom end surface of the cleaning box (1); two sets of gears (8) are equidistantly distributed on the outside of the power rod (9), The gear 1 (8) is meshed with the gear 2 (18), the gear 2 (18) is fixedly connected with the roller (19), the roller (19) is rotatably mounted on both sides of the conveying frame (5) to support the belt (16); the end of the power rod (9) away from the worm gear (11) extends toward the inside of the cleaning box (1) and is rotatably connected thereto, the outer fixed sleeve of the power rod (9) is provided with a conveying tooth 1 (31), the conveying tooth 1 (31) is meshed with the conveying tooth 2 (30), the conveying tooth 2 (30) is rotatably mounted inside the cleaning box (1), and the conveying tooth 2 (30) is The center surface is integrally constructed with a convex shaft, the outer portion of the convex shaft is sleeved with a transmission belt 1, the other end of the transmission belt 1 is sleeved with a transmission tooth 3 (33), the lower portion of the transmission tooth 3 (33) is meshingly connected with a transmission tooth 4 (35), the transmission tooth 4 (35) is rotatably mounted inside the cleaning box (1) and fixedly connected to a wheel shaft of an active cleaning wheel (36), the active cleaning wheel (36) and the transmission tooth 4 (35) are cocentrically distributed, the wheel shaft is also sleeved with a transmission belt 2, the two ends of the transmission belt 2 are respectively sleeved with the wheel shafts of auxiliary cleaning wheels (34), and a material receiving plate (34) is provided at the lower portion of the tail of the transmission frame (5). 20), the scraper mechanism (37) is located at one end of the receiving plate (20) close to the conveying frame (5), and a scraper plate (28) is installed at one end of the receiving plate (20) close to the scraper mechanism (37). The top of the scraper plate (28) is inclined toward the upper side of the receiving plate (20), and the scraper plate (28) is in contact with the magnetic strip (7). The receiving plate (20) has a plurality of feeding grooves (22) inside, and a feeding rod (21) is rotatably installed inside the feeding groove (22). A driving motor (25) connected to the feeding rod (21) is installed on the back of the receiving plate (20).

2. A workshop metal cleaning equipment according to claim 1, characterized in that: The transmission toothed disc (26) and the cleaning disc (27) are arranged in a staggered manner; a plurality of transmission blocks provided with adapted transmission holes (15) are arranged at intervals on the outer circumferential surface of the transmission toothed disc (26); and a brush is provided on the outer circumferential surface of the cleaning disc (27); the cleaning disc (27) and the transmission toothed disc (26) are both fixedly sleeved on the outside of the connecting shaft (38); both ends of the connecting shaft (38) are rotatably mounted with fixed blocks (29); the fixed blocks (29) are fixedly mounted on the bracket (23); and the bracket (23) is fixedly mounted on the upper ends of both sides of the receiving plate (20).

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