A conveying device for manhole cover production
By designing a conveying device for manhole cover production, and utilizing components such as sliding frames, receiving plates, and electric push rods, the device enables contactless movement and position adjustment of the manhole cover blank. This solves the problem of scratches on the conveying device during the conveying process, reduces component damage and transportation costs, and improves processing accuracy and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIANYUNGANG TONGGANG FOUNDRY CO LTD
- Filing Date
- 2025-08-06
- Publication Date
- 2026-05-26
AI Technical Summary
During the production of manhole covers, residual burrs, scale, or casting port residue on the surface of the rough manhole cover blank can cause scratches on the belt and roller surfaces of the transmission mechanism, increasing transmission resistance and requiring frequent component replacements, thus increasing transportation costs.
A conveying device for manhole cover production was designed. Through the cooperation of components such as sliding frame, receiving plate, drive wheel and electric push rod, the manhole cover blank can be moved and its position adjusted without contact, reducing component damage and lowering transportation costs.
It effectively reduces damage to components of the transmission device, lowers transportation costs, and improves the processing accuracy and efficiency of manhole cover production.
Smart Images

Figure CN224278853U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of manhole cover production technology, and specifically to a conveying device for manhole cover production. Background Technology
[0002] Manhole covers are a type of structure widely used in urban infrastructure, including roads, underground pipelines, drainage systems, and communication cables. They typically protect underground facilities and ensure the safe passage of pedestrians and vehicles.
[0003] In the production process of manhole covers, pig iron and scrap steel are smelted in an electric furnace, and then the molten iron is poured into a mold to cool and form. The cooled and demolded blanks are then placed on a conveying mechanism (belt conveyor or roller conveyor line) and processed in batches by lathes, milling machines, etc., and the manhole cover production is completed.
[0004] A typical single manhole cover weighs approximately 80KG-150KG. Although composite material manhole covers are lighter, during the mass production of manhole covers, residual burrs, oxide scale, or casting gate residue on the surface of the rough manhole cover blank can directly contact the components of the transmission mechanism, causing scratches on the surface of the belt and rollers, increasing transmission resistance, and even causing jamming. This necessitates frequent replacement of components, increasing transportation costs. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a conveying device for manhole cover production, which reduces scratches on the belt or roller surface caused by the conveying mechanism when transporting manhole cover blanks, thereby improving the efficiency of rapid replacement.
[0006] The technical solution adopted by this utility model to solve the technical problem is as follows: a conveying device for manhole cover production, including four pillars. Two opposing pillars are fixedly connected to their upper ends with a first sliding frame. A first receiving plate is provided on the upper end of the first sliding frame. A first clamping frame is fixedly connected to the first receiving plate by bolts. A first double-headed motor is fixedly connected inside the first clamping frame. A first drive wheel is fixedly connected to the output end of the first double-headed motor. A first connecting plate is rotatably connected to one side of the first drive wheel. The upper end of the first connecting plate contacts the bottom side of the first receiving plate. A first limiting plate is fixedly connected to the bottom end of the first clamping frame by bolts. The first limiting plate has a split structure. A support rod is fixedly connected to the bottom end of the first limiting plate. A contact wheel is rotatably connected to the bottom end of the support rod. Two of the aforementioned pillars are fixedly connected to the bottom sides of a second sliding frame. A first drive motor is fixedly connected inside the second sliding frame. A second drive wheel is fixedly connected to the output end of the first drive motor. A second connecting plate is rotatably connected to one side of the second drive wheel. A second receiving plate is in contact with the upper end of the second connecting plate. A second clamping frame is fixedly connected to the second receiving plate by bolts. An auxiliary rod is fixedly connected to the upper end of the second receiving plate, and a clamping plate is fixedly connected to the upper end of the auxiliary rod. A second drive motor is fixedly connected to the upper end of one of the clamping plates. A screw is fixedly connected to the output end of the second drive motor. A sliding plate is threaded onto the screw. A receiving groove runs through the sliding plate. Electric push rods are fixedly connected to all four sides of the sliding plate at the receiving groove. A receiving block is fixedly connected to the output end of each electric push rod.
[0007] As a preferred technical solution of this utility model, a push plate is fixedly connected to the bottom end of the receiving block. The push plate is located in the receiving groove. By setting the push plate, a guiding function can be provided when the manhole cover blank is located on the first receiving plate.
[0008] As a preferred technical solution of this utility model, the four sides of the receiving groove are provided with hidden grooves, which correspond to the receiving block and the push plate. By setting the hidden grooves, the push plate and the receiving block can be completely located in the hidden grooves, which facilitates the falling of the manhole cover blank.
[0009] As a preferred technical solution of this utility model, both the first connecting plate and the second connecting plate are provided with auxiliary wheels. A sliding ball is rotatably embedded on the side of the first connecting plate and the second connecting plate away from the auxiliary wheel. The sliding ball contacts the first sliding frame and the second sliding frame respectively. By providing the sliding ball, the friction between the first connecting plate, the second connecting plate and the first sliding frame and the second sliding frame is reduced.
[0010] As a preferred technical solution of this utility model, an electric telescopic rod is provided between the two second sliding frames. The electric telescopic rod is fixedly connected to the center of the bottom end of the first limiting plate. A pressure plate is fixedly connected to the output end of the electric telescopic rod. By setting the electric telescopic rod to drive the pressure plate to press down and contact the ground, the position of the sliding plate is limited.
[0011] As a preferred technical solution of this utility model, a circular plate is fixedly connected to the bottom side of the support rod, and an annular baffle is fixedly connected to the bottom end of the circular plate. By setting the circular plate and the annular baffle, the movement path of the contact wheel can be cleaned.
[0012] This utility model has the following advantages:
[0013] (1) By setting a first sliding frame in conjunction with a first receiving plate for moving the manhole cover blank, the first drive wheel and auxiliary wheel under the control of the first double-head motor can make the receiving plate move. Then, the first receiving plate can be quickly disassembled by removing the bolts, thereby achieving rapid replacement of the receiving plate for the manhole cover blank. Moreover, the components used for moving the receiving plate do not contact the manhole cover blank, which can reduce component damage and reduce transportation costs.
[0014] (2) By setting a second sliding frame on one side of the support column, the second frame is used in conjunction with the second drive wheel to move the position of the second receiving plate and the sliding plate. The screw is used to change the height of the sliding plate. When the sliding plate corresponds to and contacts the first receiving plate, the electric push rod retracts, the manhole cover blank moves down to the first receiving plate, and the position of the manhole cover blank on the first receiving plate is moved by the electric push rod in conjunction with the push plate, so as to facilitate the adjustment of the position of the manhole cover blank and improve the processing accuracy. Attached Figure Description
[0015] Figure 1 This is a top view of a preferred embodiment of a conveying device for producing manhole covers.
[0016] Figure 2 This is a side cross-sectional view of the first receiving plate of a conveying device for manhole cover production according to a preferred embodiment of the present invention.
[0017] Figure 3 This is a three-dimensional structural diagram of the first receiving plate of a conveying device for manhole cover production according to a preferred embodiment of the present invention.
[0018] Figure 4 This is a three-dimensional structural diagram of the second receiving plate of a conveying device for manhole cover production according to a preferred embodiment of the present invention.
[0019] Explanation of reference numerals in the attached drawings: 1. Support column; 2. First sliding frame; 3. First receiving plate; 4. First locking frame; 5. First connecting plate; 6. First drive wheel; 7. First limiting plate; 8. Support rod; 9. Contact wheel; 10. Second sliding frame; 11. Second locking frame; 12. Second receiving plate; 13. Second connecting plate; 14. Second drive wheel; 15. Locking plate; 16. Screw; 17. Slide plate; 18. Receiving groove; 19. Electric push rod; 20. Receiving block; 21. Push plate; 22. Sliding ball; 23. Circular plate; 24. Annular baffle; 25. Electric telescopic rod; 26. Pressure plate. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings.
[0021] Please refer to the following: Figure 1-4The illustrated conveying device for manhole cover production includes four support columns 1. A first sliding frame 2 is fixedly connected to the upper end of two opposing support columns 1. A first receiving plate 3 is provided on the upper end of the first sliding frame 2. A first clamping frame 4 is fixedly connected to the first receiving plate 3 by bolts. A first double-headed motor is fixedly connected inside the first clamping frame 4. The first double-headed motor drives a first drive wheel 6 to rotate. In conjunction with an auxiliary wheel, this allows the first receiving plate 3 to move within the first sliding frame 2. The output end of the first double-headed motor is fixedly connected to the first drive wheel 6. A first connecting plate 5 is rotatably connected to one side of the first drive wheel 6. The upper end of a connecting plate 5 contacts the bottom side of the first receiving plate 3. The bottom end of the first clamping frame 4 is fixedly connected to a first limiting plate 7 by bolts. The first limiting plate 7 can be detached from the bottom side of the first clamping frame 4 by removing the bolts. The first limiting plate 7 has a split structure. The bottom end of the first limiting plate 7 is fixedly connected to a support rod 8. The bottom end of the support rod 8 is rotatably connected to a contact wheel 9. The bottom sides of the two support columns 1 are fixedly connected to second sliding frames 10. The opposite side of the two first sliding frames 2 and the two second sliding frames 10 is an open structure, which can facilitate the removal of processing debris. The first drive motor is fixedly connected inside the second sliding frame 10. The first drive motor drives the second drive wheel 14 to rotate, which, in conjunction with the auxiliary wheel, enables the second receiving plate 12 to move within the second sliding frame 10. The output end of the first drive motor is fixedly connected to the second drive wheel 14. A second connecting plate 13 is rotatably connected to one side of the second drive wheel 14. The upper end of the second connecting plate 13 contacts the second receiving plate 12. The second receiving plate 12 is fixedly connected to the second clamping frame 11 by bolts. An auxiliary rod is fixedly connected to the upper end of the second receiving plate 12, and a clamping plate 15 is fixedly connected to the upper end of the auxiliary rod. The two clamping plates 15 are fixedly connected by a connecting rod. One of the clamping plates 15... A second drive motor is fixedly connected to the upper end of the 5. The second drive motor drives the screw 16 to rotate, which enables the slide plate 17 to move up and down, thereby changing the height of the manhole cover blank and the slide plate 17. The output end of the second drive motor is fixedly connected to the screw 16. The slide plate 17 is threadedly connected to the screw 16. The slide plate 17 has a receiving groove 18 through it. Electric push rods 19 are fixedly connected to all four sides of the slide plate 17 located in the receiving groove 18. The output end of the electric push rod 19 is fixedly connected to the receiving block 20. When the electric push rod 19 extends, the receiving block 20 extends to a diameter smaller than that of the manhole cover blank, thereby providing support for the manhole cover blank.
[0022] Among them, the bottom end of the receiving block 20 is fixedly connected to the push plate 21, which is located in the receiving groove 18. When the manhole cover blank is located between the receiving block 20 and the first receiving plate 3, the extension and contraction of the electric push rod 19 can cause the push plate 21 to squeeze the outer periphery of the manhole cover blank, thereby enabling the manhole cover blank to be located at the center position of the upper end of the first receiving plate 3, thus achieving position adjustment.
[0023] The receiving groove 18 has hidden grooves on all four sides, which correspond to the receiving block 20 and the push plate 21. By setting the hidden grooves, the receiving block 20 and the push plate 21 can be located in the hidden grooves when the electric push rod 19 retracts, so that the manhole cover blank can be moved down to contact the first receiving plate 3.
[0024] Both the first connecting plate 5 and the second connecting plate 13 are equipped with auxiliary wheels. The first connecting plate 5 and the second connecting plate 13 are equipped with a sliding ball 22 on the side away from the auxiliary wheels. The sliding ball 22 contacts the first sliding frame 2 and the second sliding frame 10 respectively. By setting the sliding ball 22, the friction between the first sliding frame 2, the second sliding frame 10 and the first connecting plate 5 and the second connecting plate 13 is reduced.
[0025] An electric telescopic rod 25 is provided between the two second sliding frames 10. The electric telescopic rod 25 is fixedly connected to the center of the bottom end of the first limiting plate 7. The output end of the electric telescopic rod 25 is fixedly connected to a pressure plate 26. By setting the electric telescopic rod 25 to extend and make the pressure plate 26 contact the ground, the position of the first receiving plate 3 is stabilized, thereby achieving the effect of controlling the position of the manhole cover blank.
[0026] Among them, a circular plate 23 is fixedly connected to the bottom side of the support rod 8, and an annular baffle 24 is fixedly connected to the bottom end of the circular plate 23. The annular baffle 24 is located on the outside of the contact wheel 9. By setting the circular plate 23 in conjunction with the annular baffle 24, the movement path of the contact wheel 9 can be cleaned.
[0027] Working principle: The cooled manhole cover blank is placed on the upper side of the slide plate 17. Then, four electric push rods 19 and receiving blocks 20 are used to receive and limit the manhole cover blank. Then, the first drive motor drives the second drive wheel 14 and the auxiliary wheel to rotate, thereby moving the second receiving plate 12 and the slide plate 17. The second drive motor also drives the screw 16 to rotate, causing the slide plate 17 to move upward. At this time, the slide plate 17 is higher than the first receiving plate 3. Then, the second drive wheel 14 makes the manhole cover blank position above the first receiving plate 3. Then, the output end of the electric push rod 19 retracts, and the receiving block 20 and push plate 21 move into the hidden groove. The manhole cover blank falls onto the first receiving plate 3. Then, the screw 16 rotates to make the slide plate 17 move upward. The slide plate 17 moves upward, and the upper end of the first receiving plate 3 no longer contacts it. Then, the electric push rod 19 extends again, causing the push plate 21 to push the outer edge of the manhole cover blank, so that the manhole cover blank is located at the center of the upper end of the first receiving plate 3. After the first receiving plate 3 moves to a suitable position on the first sliding frame 2, the electric telescopic rod 25 extends, causing the pressure plate 26 to contact the ground, so that the position of the first receiving plate 3 is fixed, which facilitates processing. Furthermore, the first receiving plate 3 supports the manhole cover blank, avoiding the drive wheel, auxiliary wheel, sliding frame and other structures from not contacting the manhole cover blank. With the detachable and replaceable first receiving plate 3 structure, the effect of quick replacement can be achieved, which can reduce component damage and reduce transportation costs.
[0028] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.
[0029] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.
[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A conveying device for manhole cover production, comprising four support columns (1), characterized in that, Two opposing support columns (1) are fixedly connected to the upper ends of a first sliding frame (2). A first receiving plate (3) is provided on the upper end of the first sliding frame (2). A first clamping frame (4) is fixedly connected to the first receiving plate (3) by bolts. A first double-headed motor is fixedly connected inside the first clamping frame (4). A first drive wheel (6) is fixedly connected to the output end of the first double-headed motor. A first connecting plate (5) is rotatably connected to one side of the first drive wheel (6). The upper end of the first connecting plate (5) contacts the bottom side of the first receiving plate (3). A first limiting plate (7) is fixedly connected to the bottom end of the first clamping frame (4) by bolts. The first limiting plate (7) has a split structure. A support rod (8) is fixedly connected to the bottom end of the first limiting plate (7). A contact wheel (9) is rotatably connected to the bottom end of the support rod (8). A second sliding frame (10) is fixedly connected to the bottom side of the two support columns (1). A first connecting plate (6) is fixedly connected to the output end of the first double-headed motor. A first connecting plate (5) is rotatably connected to one side of the first drive wheel (6). A first drive motor is connected to the output end of the first drive motor, and a second drive wheel (14) is fixedly connected to the output end of the first drive motor. A second connecting plate (13) is rotatably connected to one side of the second drive wheel (14). A second receiving plate (12) is contacted at the upper end of the second connecting plate (13). A second clip frame (11) is fixedly connected to the second receiving plate (12) by bolts. An auxiliary rod is fixedly connected to the upper end of the second receiving plate (12), and a clip plate (15) is fixedly connected to the upper end of the auxiliary rod. A second drive motor is fixedly connected to the upper end of one of the clip plates (15). A screw (16) is fixedly connected to the output end of the second drive motor. A sliding plate (17) is threaded onto the screw (16). A receiving groove (18) runs through the sliding plate (17). Electric push rods (19) are fixedly connected to all four sides of the sliding plate (17) located in the receiving groove (18). A receiving block (20) is fixedly connected to the output end of the electric push rod (19).
2. The conveying device for manhole cover production as described in claim 1, characterized in that, The bottom end of the receiving block (20) is fixedly connected to a push plate (21), which is located in the receiving groove (18).
3. The conveying device for manhole cover production as described in claim 2, characterized in that, The receiving groove (18) has hidden grooves on all four sides, and the hidden grooves correspond to the receiving block (20) and the push plate (21).
4. The conveying device for manhole cover production as described in claim 1, characterized in that, Both the first connecting plate (5) and the second connecting plate (13) are provided with auxiliary wheels. The first connecting plate (5) and the second connecting plate (13) are fitted with a slider (22) on the side away from the auxiliary wheels. The slider (22) contacts the first sliding frame (2) and the second sliding frame (10) respectively.
5. A conveying device for manhole cover production as described in claim 4, characterized in that, An electric telescopic rod (25) is provided between the two second sliding frames (10). The electric telescopic rod (25) is fixedly connected to the center of the bottom end of the first limiting plate (7). A pressure plate (26) is fixedly connected to the output end of the electric telescopic rod (25).
6. A conveying device for manhole cover production as described in claim 4, characterized in that, A circular plate (23) is fixedly connected to the bottom side of the support rod (8), and an annular baffle (24) is fixedly connected to the bottom end of the circular plate (23).