Maintenance and cleaning device for mechanical equipment
By designing thread lifting mechanism, quick clamping mechanism and clamping auxiliary mechanism, the existing mechanical equipment maintenance and cleaning devices cannot adjust the equipment height and the spray head disassembly are solved, and highly flexible adjustment and easy operation are achieved, and cleaning efficiency and safety are improved.
Patent Information
- Application Number
- CN202421694119.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-17
AI Technical Summary
The existing mechanical equipment maintenance and cleaning devices cannot adjust the sprayer and drying box according to the height of the equipment, and the disassembly of the spray head is cumbersome, which affects the cleaning effect and efficiency.
A mechanical equipment maintenance and cleaning device including a thread lifting mechanism, a fast clamping mechanism and a clamping auxiliary mechanism is designed. The threaded lifting mechanism realizes the height adjustment of the sprayer and drying box through the drive motor and lead screw. The quick clamping mechanism simplifies the installation and disassembly of the spray head, and the clamping auxiliary mechanism realizes the precise adjustment of the clamping position.
It realizes highly flexible adjustment of the sprayer and drying box, simplifies the installation and disassembly of the spray head, improves the cleaning efficiency and the versatility of the device, and reduces the labor intensity and safety risks of the operators.
Smart Images

Figure CN222842673U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of equipment cleaning, and more specifically, to a mechanical equipment maintenance and cleaning device. Background Art
[0002] Functional mechanical equipment maintenance and cleaning device is suitable for daily cleaning and maintenance of various industrial mechanical equipment. It can be used in factories, workshops, maintenance stations and other places. It can remove dirt and dust on the surface of mechanical equipment by spraying water, air or brushes, lubricate the moving parts of mechanical equipment by spraying lubricating oil through nozzles, and quickly dry mechanical equipment by blowing or heating.
[0003] In the existing technology, firstly, the sprayers and drying boxes of some devices cannot be adjusted according to the height of the mechanical equipment, which affects the cleaning effect and cannot adapt to the cleaning needs of mechanical equipment at different heights and positions, limiting the use scope of the device. Operators may need to use other auxiliary tools to adjust the height of the sprayers and drying boxes, increasing the difficulty of work and safety hazards. Secondly, the disassembly of the spray heads of some devices is too cumbersome, and the connection process may require more time and steps, reducing work efficiency, and some connection methods may cause inaccurate clamping positions, affecting the stability and cleaning quality of the mechanical equipment. Operators need more physical labor to complete the clamping work. Finally, it will become difficult to fine-tune the clamping position of some devices, and the clamping components may need to be disassembled and reinstalled. Fine-tuning the clamping position is the key to ensuring the stability of the mechanical equipment. Utility Model Content
[0004] 1. Technical issues to be solved
[0005] In view of the problems existing in the prior art, the utility model provides a mechanical equipment maintenance and cleaning device to solve the technical problems mentioned in the background technology, such as the sprayer and the drying box cannot be adjusted according to the height of the mechanical equipment and the disassembly of the spray head is too complicated.
[0006] (II) Technical solution
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mechanical equipment maintenance and cleaning device, comprising a flat car, a spray head, a threaded lifting mechanism, a quick clamping mechanism and a clamping auxiliary mechanism, the threaded lifting mechanism comprising a driving motor, a lead screw, a threaded block, a cross frame, a mounting block, a sprayer and a drying box, the lead screw is installed at the output end of the driving motor, two groups of threaded blocks are arranged on the lead screw, the cross frame is arranged on one side of the threaded block, the mounting block is arranged on the cross frame, and the sprayer and the drying box are respectively arranged on the two groups of mounting blocks, the clamping auxiliary mechanism comprises a clamping tube, a clamping rod, a threaded sleeve, a guide frame, a push rod, a moving plate, a top plate and a reset spring, one end of the clamping rod can be movably extended into the interior of the clamping tube, the inner wall of the threaded sleeve is connected with the outer wall of the clamping tube by a threaded setting, the guide frame and the top plate are fixedly arranged on the outer wall of the clamping tube, the push rod is movably arranged on the guide frame, and the top end of the push rod is contacted and connected with the bottom end of the threaded sleeve, the moving plate is movably arranged on the side wall of the clamping tube, the other end of the push rod is contacted and connected with the moving plate, and the reset spring is arranged between the top plate and the moving plate.
[0008] The utility model is further configured as follows: the clamping auxiliary mechanism includes an extension rod, a rubber sleeve, a pushing ring, a push block, a slope block, a clamping spring, a locking plate and a locking nail. The extension rod is arranged at one end of the clamping rod, the rubber sleeve is arranged on the side of the extension rod, the pushing ring is arranged on the inner side of the clamping tube, the pushing ring is in contact with and connected to the top of the push block, multiple groups of slope blocks are arranged on the inner side of the clamping tube, the push block is movably arranged on the side of the slope block, the clamping spring is arranged on the side of the push block, the locking plate is arranged on one side of the clamping spring, the locking nail is arranged on one side of the locking plate, and the push block can be tilted and moved on the slope block to cause the clamping spring and the locking plate to shrink inward, so that the lock is embedded in the rubber sleeve.
[0009] The utility model is further configured such that a movement groove is opened on the side of the clamping tube, and the inner end side of the movement plate extends through the movement groove and is linked with the pushing ring. The design of the movement groove enables the movement plate to be linked with the pushing ring to achieve flexible adjustment of the clamping position.
[0010] The utility model is further configured such that a water tank is installed on the top end surface of the flat car, an infusion pump is installed on the top end surface of the water tank, and infusion tubes are respectively connected to both ends of the infusion pump. The setting of the water tank provides a water source for cleaning.
[0011] The utility model is further configured such that the infusion tubes at both ends of the infusion pump are respectively connected to the water tank and the sprayer, a first matching plate is installed on the side of the sprayer, and the infusion pump transports water to the sprayer through the infusion tube, thereby realizing the spray cleaning function.
[0012] The utility model is further configured such that a connecting plate is installed at the bottom end of the side wall of the clamping tube, and the connecting plate is fixedly installed on the first matching plate, a second matching plate is installed at one end of the spray head, and one end of the clamping rod is matched and connected with the second matching plate, and the setting of the connecting plate and the matching plate facilitates the installation and fixation of the spray head and the clamping rod.
[0013] The utility model is further configured such that a guide rod is installed on the top end surface of the water tank, and a guide sleeve is installed on one side of the cross frame, and the guide sleeve is movably installed on the guide rod to cooperate with the directional guide setting. The setting of the guide rod and the guide sleeve ensures the directional movement of the cross frame and the sprinkler, thereby improving the accuracy of the operation.
[0014] The utility model is further configured such that a drying fan is installed on the side of the drying box, and multiple groups of drying fans and spray heads are provided, universal wheels are installed around the bottom end surface of the flat cart, and a push handle is installed on the side of the flat cart. Multiple groups of drying fans can speed up the drying speed and are suitable for rapid drying of a large area.
[0015] (III) Beneficial effects
[0016] Compared with the prior art, the utility model provides a mechanical equipment maintenance and cleaning device, which has the following beneficial effects:
[0017] The utility model is provided with a threaded lifting mechanism, which can realize precise height adjustment of the sprayer and the drying box through the cooperation of the driving motor and the lead screw, and can adapt to mechanical equipment of different heights. The automated lifting adjustment reduces the time and labor intensity of manual adjustment, improves the cleaning efficiency, and the operator does not need to manually adjust the height, which reduces safety risks. It can adapt to mechanical equipment of different heights and positions, and improves the versatility and flexibility of the device.
[0018] The utility model is provided with a quick clamping mechanism, through which the spray head and mechanical equipment can be quickly fixed, reducing the operation time. The clamping mechanism ensures a stable connection between the spray head and the mechanical equipment to prevent movement or falling off during the cleaning process. It can adapt to mechanical equipment of different diameters and shapes, and improves the application range of the device.
[0019] The utility model is provided with a clamping auxiliary mechanism, which can realize fine adjustment of the clamping position through the linkage of the moving plate and the pushing ring to ensure that the sprinkler head is aligned with the precise position of the mechanical equipment. The design of the clamping auxiliary mechanism enhances the stability of the entire clamping system and reduces the displacement caused by vibration or external force. The reasonable structural design makes the maintenance and replacement of the clamping auxiliary mechanism easier and faster. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the overall structure of the device in the present utility model when it is not in use;
[0021] Figure 2 It is a schematic diagram of the overall structure of the device in the utility model from a side perspective;
[0022] Figure 3 It is a structural schematic diagram of the thread lifting mechanism in the utility model;
[0023] Figure 4 It is a structural schematic diagram of the quick clamping mechanism and the clamping auxiliary mechanism in the utility model;
[0024] Figure 5 It is a schematic diagram of the internal structure of the quick clamping mechanism and the clamping auxiliary mechanism in the utility model.
[0025] In the figure: 1. flat car; 2. sprinkler head; 3. drive motor; 4. lead screw; 5. threaded block; 6. cross frame; 7. mounting block; 8. sprinkler; 9. drying box; 10. clamping tube; 11. clamping rod; 12. threaded sleeve; 13. guide frame; 14. push rod; 15. moving plate; 16. top plate; 17. reset spring; 18. extension rod; 19. rubber sleeve; 20. push ring; 21. push block; 22. slope block; 23. clamping spring; 24. lock plate; 25. lock nail; 26. moving groove; 27. water tank; 28. infusion pump; 29. infusion tube; 30. first matching plate; 31. connecting plate; 32. second matching plate; 33. guide rod; 34. guide sleeve; 35. drying fan; 36. universal wheel; 37. push handle. DETAILED DESCRIPTION
[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.
[0028] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.
[0029] See also Figure 1-5A mechanical equipment maintenance and cleaning device comprises a flat car 1, a spray head 2, a thread lifting mechanism, a quick clamping mechanism and a clamping auxiliary mechanism, the thread lifting mechanism comprises a driving motor 3, a lead screw 4, a thread block 5, a cross frame 6, a mounting block 7, a sprayer 8 and a drying box 9, the lead screw 4 is mounted on the output end of the driving motor 3, two groups of thread blocks 5 are arranged on the lead screw 4, the cross frame 6 is arranged on one side of the thread block 5, the mounting block 7 is arranged on the cross frame 6, and the sprayer 8 and the drying box 9 are respectively arranged on the two groups of mounting blocks 7, the clamping auxiliary mechanism comprises a clamping tube 10, a clamping rod 11, a threaded sleeve 12, a guide frame 1 3. Push rod 14, moving plate 15, top plate 16 and reset spring 17. One end of the clamping rod 11 can be movably extended into the interior of the clamping tube 10. The inner wall of the threaded sleeve 12 is connected to the outer wall of the clamping tube 10 by a threaded setting. The guide frame 13 and the top plate 16 are fixedly arranged on the outer wall of the clamping tube 10. The push rod 14 is movably arranged on the guide frame 13, and the top end of the push rod 14 is in contact with the bottom end of the threaded sleeve 12. The moving plate 15 is movably arranged on the side wall of the clamping tube 10. The other end of the push rod 14 is in contact with the moving plate 15. The reset spring 17 is arranged between the top plate 16 and the moving plate 15.
[0030] In this embodiment, the driving motor 3 is started and the power is transmitted to the threaded block 5 through the lead screw 4. The threaded block 5 rotates, driving the cross frame 6 and the mounting block 7 to move vertically, thereby realizing the lifting and lowering adjustment of the sprayer 8 and the drying box 9. The sprayer 8 and the drying box 9 are adjusted to appropriate heights as needed to perform spraying and drying operations, thereby realizing the rapid installation and disassembly of the spray head 2. The push rod 14 is in contact and connected with the bottom end of the threaded sleeve 12, and the other end of the push rod 14 is in contact and connected with the moving plate 15. The rotation of the threaded sleeve 12 drives the push rod 14 to push the moving plate 15 up and down. The moving plate 15 cooperates with the push ring 20 through the moving groove 26 to realize the precise adjustment of the clamping position. The reset spring 17 is arranged between the top plate 16 and the moving plate 15 to provide a restoring force to facilitate the adjustment of the clamping position.
[0031] The clamping auxiliary mechanism includes an extension rod 18, a rubber sleeve 19, a push ring 20, a push block 21, a slope block 22, a clamping spring 23, a locking plate 24 and a locking pin 25. The extension rod 18 is arranged at one end of the clamping rod 11, the rubber sleeve 19 is arranged on the side of the extension rod 18, the push ring 20 is arranged on the inner side of the clamping tube 10, the push ring 20 is in contact with and connected to the top of the push block 21, multiple groups of slope blocks 22 are arranged on the inner side of the clamping tube 10, the push block 21 is movably arranged on the side of the slope block 22, the clamping spring 23 is arranged on the side of the push block 21, the locking plate 24 is arranged on one side of the clamping spring 23, and the locking pin 25 is arranged on one side of the locking plate 24. The push block 21 can be tilted and moved on the slope block 22, so that the clamping spring 23 and the locking plate 24 shrink inward, so that the lock is embedded in the rubber sleeve 19.
[0032] In this embodiment, the clamping rod 11 is connected to the inside of the clamping tube 10 through the extension rod 18 and the rubber sleeve 19, the push ring 20 is in contact with the push block 21, and the push block 21 moves obliquely on the slope block 22, so that the clamping spring 23 and the lock plate 24 shrink inward, and the lock pin 25 is embedded in the rubber sleeve 19, so that the clamping rod 11 is fixed in the clamping tube 10, realizing the quick clamping function.
[0033] See also Figure 1-5 As a supplementary implementation of a mechanical equipment maintenance and cleaning device for the threaded lifting mechanism, the quick clamping mechanism and the clamping auxiliary mechanism: a movement groove 26 is opened on the side of the clamping tube 10, and the inner end side of the moving plate 15 extends through the movement groove 26 and is connected in a coordinated manner with the pushing ring 20, a water tank 27 is installed on the top end surface of the flat car 1, and an infusion pump 28 is installed on the top end surface of the water tank 27, and infusion tubes 29 are respectively connected at both ends of the infusion pump 28, and the infusion tubes 29 at both ends of the infusion pump 28 are respectively connected with the water tank 27 and the sprayer 8, and a first matching plate 30 is installed on the side of the sprayer 8. The bottom of the side wall of the clamping tube 10 A connecting plate 31 is installed at the end, and the connecting plate 31 is fixedly installed on the first matching plate 30, a second matching plate 32 is installed at one end of the spray head 2, and one end of the clamping rod 11 is matched and connected with the second matching plate 32, a guide rod 33 is installed on the top end surface of the water tank 27, and a guide sleeve 34 is installed on one side of the cross frame 6, and the guide sleeve 34 is movably installed on the guide rod 33 to cooperate with the directional guide setting, a drying fan 35 is installed on the side of the drying box 9, and there are multiple groups of drying fans 35 and spray heads 2, universal wheels 36 are installed around the bottom end surface of the flat cart 1, and a push handle 37 is installed on the side of the flat cart 1.
[0034] More specifically, the water tank 27 on the top of the flat cart 1 supplies water to the sprayer 8 through the infusion pump 28 and the infusion tube 29. The sprayer 8 is connected to the connecting plate 31 of the clamping tube 10 through the first matching plate 30. The spray head 2 is connected to the clamping rod 11 through the second matching plate 32, so as to realize the rapid installation and disassembly of the spray head 2. The cooperation of the guide rod 33 and the guide sleeve 34 ensures the directional movement of the cross frame 6 and the sprayer 8. The sprayer 8 sprays and cleans the mechanical equipment. The water after cleaning is dried through the drying box 9. The drying fan 35 on the side of the drying box 9 accelerates the drying process to ensure that the mechanical equipment is dried quickly. The universal wheel 36 at the bottom of the flat cart 1 provides mobility, which is convenient for the rapid positioning and transfer of the device. The push handle 37 on the side of the flat cart 1 facilitates the operator to push the device to move.
[0035] In summary, when the overall equipment is in use or running: when the threaded lifting mechanism needs to be operated, the drive motor 3 is started, and the power is transmitted to the threaded block 5 through the screw 4. The threaded block 5 rotates, driving the cross frame 6 and the mounting block 7 to move vertically, thereby realizing the lifting and lowering adjustment of the sprayer 8 and the drying box 9. The sprayer 8 and the drying box 9 are adjusted to an appropriate height as needed to perform spraying and drying operations.
[0036] When the quick clamping mechanism is required to be operated, the sprinkler head 2 can be quickly installed and disassembled, the push rod 14 is in contact and connected with the bottom end of the threaded sleeve 12, and the other end of the push rod 14 is in contact and connected with the moving plate 15. The rotation of the threaded sleeve 12 drives the push rod 14 to push the moving plate 15 to move up and down. The moving plate 15 cooperates with the push ring 20 through the moving groove 26 to achieve precise adjustment of the clamping position. The return spring 17 is arranged between the top plate 16 and the moving plate 15 to provide a restoring force to facilitate the adjustment of the clamping position.
[0037] When the operation of the clamping auxiliary mechanism is required, the clamping rod 11 is connected to the inside of the clamping tube 10 through the extension rod 18 and the rubber sleeve 19, the push ring 20 is in contact with the push block 21, and the push block 21 moves obliquely on the slope block 22, so that the clamping spring 23 and the locking plate 24 shrink inward, and the locking pin 25 is embedded in the rubber sleeve 19, so that the clamping rod 11 is fixed in the clamping tube 10, realizing the quick clamping function.
[0038] The water tank 27 on the top of the flat car 1 supplies water to the sprayer 8 through the infusion pump 28 and the infusion tube 29. The sprayer 8 is connected to the connecting plate 31 of the clamping tube 10 through the first matching plate 30. The spray head 2 is connected to the clamping rod 11 through the second matching plate 32 to achieve rapid installation and disassembly of the spray head 2. The cooperation of the guide rod 33 and the guide sleeve 34 ensures the directional movement of the cross frame 6 and the sprayer 8. The sprayer 8 sprays and cleans the mechanical equipment. The cleaned water is dried through the drying box 9. The drying fan 35 on the side of the drying box 9 accelerates the drying process to ensure that the mechanical equipment is dried quickly. The universal wheel 36 at the bottom of the flat car 1 provides mobility, which is convenient for the rapid positioning and transfer of the device. The push handle 37 on the side of the flat car 1 is convenient for the operator to push the device to move.
[0039] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.
Claims
1. A mechanical equipment maintenance and cleaning device, comprising a flat car (1), a spray head (2), a threaded lifting mechanism, a quick clamping mechanism and a clamping auxiliary mechanism, wherein: The thread lifting mechanism comprises a driving motor (3), a lead screw (4), a thread block (5), a cross frame (6), a mounting block (7), a sprayer (8) and a drying box (9), wherein the lead screw (4) is mounted on the output end of the driving motor (3), the thread block (5) is arranged on the lead screw (4), the cross frame (6) is arranged on one side of the thread block (5), the mounting block (7) is arranged on the cross frame (6), the sprayer (8) and the drying box (9) are respectively arranged on the mounting block (7), and the clamping auxiliary mechanism comprises a clamping tube (10), a clamping rod (11), a threaded sleeve (12), a guide frame (13), a push rod (14), a moving guide rod (15), a guide rod (16), a guide rod (17), a guide rod (18), a guide rod (19), a guide rod (20), a guide rod (21), a guide rod (22), a guide rod (23), a guide rod (24), a guide rod (25), a guide rod (26), a guide rod (27), a guide rod (28), a guide rod (29), a guide rod (30), a guide rod (31), a guide rod (32), a guide rod (33), a guide rod (34), a guide rod (35), a guide rod (36), a guide rod (37), a guide rod (38), a guide rod (39), a guide rod (40), a guide rod (41), a guide rod (42), a guide rod (43), a guide rod (44), a guide rod (45), a guide rod (46), a guide rod (47), a guide rod (48), a guide rod (49), a guide rod (50), a guide rod (51), a guide rod (52), a guide rod (53), a guide rod (54), a guide rod (55), a guide rod (56), a guide rod (57), a guide rod (58), a guide rod (59), a guide rod (6 The invention relates to a movable plate (15), a top plate (16) and a return spring (17); the clamping rod (11) is movably extended into the interior of the clamping tube (10); the inner wall of the threaded sleeve (12) is connected to the outer wall of the clamping tube (10) by a threaded arrangement; the guide frame (13) and the top plate (16) are fixedly arranged on the outer wall of the clamping tube (10); the push rod (14) is movably arranged on the guide frame (13); the top end of the push rod (14) is in contact with the bottom end of the threaded sleeve (12); the movable plate (15) is movably arranged on the side wall of the clamping tube (10); and the return spring (17) is arranged between the top plate (16) and the movable plate (15).
2. A mechanical equipment maintenance and cleaning device according to claim 1, characterized in that: The clamping auxiliary mechanism comprises an extension rod (18), a rubber sleeve (19), a push ring (20), a push block (21), a slope block (22), a clamping spring (23), a locking plate (24) and a locking nail (25); the extension rod (18) is arranged at one end of the clamping rod (11); the rubber sleeve (19) is arranged on the side of the extension rod (18); the push ring (20) is arranged on the inner side of the clamping tube (10); the push ring (20) is in contact with the top end of the push block (21); and the plurality of groups are connected to each other. The gradient block (22) is arranged on the inner side of the clamping tube (10), the push block (21) is movably arranged on the side of the gradient block (22), the clamping spring (23) is arranged on the side of the push block (21), the locking plate (24) is arranged on one side of the clamping spring (23), and the locking nail (25) is arranged on one side of the locking plate (24). The push block (21) can be tilted and moved on the gradient block (22) to make the clamping spring (23) and the locking plate (24) shrink inwards, so that the locking is embedded in the rubber sleeve (19).
3. A mechanical equipment maintenance and cleaning device according to claim 1, characterized in that: A moving groove (26) is provided on the side of the clamping tube (10), and the inner end side of the moving plate (15) extends through the moving groove (26) and is connected in a coordinated manner with the pushing ring (20).
4. A mechanical equipment maintenance and cleaning device according to claim 1, characterized in that: A water tank (27) is installed on the top end surface of the flat car (1), an infusion pump (28) is installed on the top end surface of the water tank (27), and both ends of the infusion pump (28) are respectively connected with infusion tubes (29).
5. A mechanical equipment maintenance and cleaning device according to claim 4, characterized in that: The infusion tubes (29) at both ends of the infusion pump (28) are respectively connected to the water tank (27) and the sprayer (8), and a first matching plate (30) is installed on the side of the sprayer (8).
6. A mechanical equipment maintenance and cleaning device according to claim 1, characterized in that: A connecting plate (31) is installed at the bottom end of the side wall of the clamping tube (10), and the connecting plate (31) is fixedly installed on the first matching plate (30). A second matching plate (32) is installed at one end of the spray head (2), and one end of the clamping rod (11) is matched and connected with the second matching plate (32).
7. A mechanical equipment maintenance and cleaning device according to claim 4, characterized in that: A guide rod (33) is installed on the top end surface of the water tank (27), and a guide sleeve (34) is installed on one side of the cross frame (6), and the guide sleeve (34) is movably installed on the guide rod (33) to cooperate with the directional guide setting.
8. The mechanical equipment maintenance and cleaning device according to claim 1, characterized in that: A drying fan (35) is installed on the side of the drying box (9), and multiple groups of drying fans (35) and spray heads (2) are provided. Universal wheels (36) are installed around the bottom end surface of the flat cart (1), and a push handle (37) is installed on the side of the flat cart (1).