Cement paving device for building construction

Abstract

The utility model discloses a cement paving device for building construction, which belongs to the technical field of building construction, and comprises a box body, a paving wheel, a vibrating wheel assembly, a width adjusting assembly and a compaction assembly, the paving wheel and the vibrating wheel assembly are respectively and rotatably assembled on two sides of the lower surface of the box body, and the compaction assembly is assembled at the front end of the box body. According to the cement laying device, the width adjusting assembly is designed, the position of the width limiting plate can be adjusted, then the width of the space in the box body is adjusted, finally the width of laid cement is made to be the same as the thickness of a wall, waste of the cement is avoided, and the cement laying device is convenient to use. According to the cement brick laying device, the structure is simple, the structure is compact, wall bodies with different thicknesses can be accurately adapted through dynamic adjustment, the universality is better, in addition, a vibrating wheel assembly and a compacting assembly are further designed, it can be guaranteed that cement is smoothly and continuously laid, compacting is conducted, the bonding strength of bricks and the cement is enhanced, and the stability of the wall bodies is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and in particular provides a cement paving device for building construction. Background Art

[0002] During the construction process, for wall construction work, the cement laying process mainly relies on manual labor or semi-mechanized equipment. Manual operation relies on experience. Workers need to manually use a trowel to dig cement from the ash hopper and spread it on the brick surface. The thickness and smoothness of the slurry are completely dependent on the operator's proficiency. Inexperienced construction workers are prone to uneven cement thickness, which requires subsequent rework and leveling, resulting in low work efficiency. The use of semi-mechanized equipment for laying can achieve continuous laying, but generally lacks dynamic adjustment capabilities. It is only suitable for walls of the same thickness and cannot adapt to different wall thicknesses, resulting in poor versatility. Therefore, there is a need for a cement paving device for construction. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a cement paving device for construction, which can accurately adjust the cement paving width, ensure the stability of the paving work, and effectively compact the laid cement, thereby improving the efficiency of the cement paving work.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a cement paving device for construction, comprising a box body, a paving wheel, a vibrating wheel assembly, a width adjustment assembly and a compacting assembly, wherein the paving wheel and the vibrating wheel assembly are rotatably mounted on both sides of the lower surface of the box body, the compacting assembly is mounted on the front end of the box body, a guide plate is fixedly installed obliquely in the box body, and a handle is fixedly installed on the box body;

[0005] The width adjustment assembly includes a width limiting plate, a width adjustment plate and an auxiliary walking member, the two width limiting plates are symmetrically movably assembled in the box body, the outer wall of the width limiting plate is fixedly installed with a push rod, and the push rod passes through the side wall of the box body, the side walls of the box body are fixedly installed with a guide column, and the width adjustment plate is assembled on the guide column, the outer wall of the push rod is fixedly installed with a push block, and the inner wall of the width adjustment plate is fitted with the outer wall of the push block, and the lower inner end of the width adjustment plate is fixedly installed with an auxiliary walking member;

[0006] A guide column is fixedly installed on the side wall of the box body, and the guide column passes through the width adjustment plate. A tension spring is sleeved on the outer wall of the guide column. The two ends of the tension spring are respectively fixedly installed on the side wall of the box body and the inner wall of the width adjustment plate. The outer end of the guide column is screwed on the limit ring.

[0007] Furthermore, the vibration wheel assembly includes an eccentric wheel, a vibration wheel fixing frame is fixedly installed on the rear side of the lower surface of the box body, a rotating shaft is rotatably assembled in the vibration wheel fixing frame, and the eccentric wheel is evenly fixedly installed on the rotating shaft.

[0008] Furthermore, the vibration wheel assembly also includes an elastic vibration assembly, which includes a fixed box, a vibration spring and a vibration block, and the fixed box is fixedly installed on the lower surface of the inner cavity of the box, the vibration spring is fixedly installed in the fixed box, and the vibration block is fixedly installed on the upper end of the vibration spring, and the vibration block contacts the lower surface of the guide plate.

[0009] Furthermore, the paving wheel includes a main shaft and a traveling wheel, a paving wheel mounting frame is integrally formed on the front end of the side wall of the box body, and the main shaft is inserted into the paving wheel mounting frame, the outer wall of the main shaft is evenly fixed with the traveling wheel, and the outer wall of the main shaft is evenly fixed with a pushing plate located between adjacent traveling wheels, and both ends of the main shaft are integrally formed with a fixed shaft, and a discharge port corresponding to the paving wheel is opened on the lower side of the front end of the box body, and the lower end of the guide plate is fixedly installed on the lower end surface of the discharge port.

[0010] Furthermore, the compacting assembly includes a pressure plate, a moving rod and a cam, the pressure plate is an L-shaped plate, the two moving rods are respectively fixedly installed on the rear surface of the vertical plate of the pressure plate, the two cams are fixedly installed on the fixed shaft, the moving rod is connected to the cam in a transmission manner, and the moving rod is located above the fixed shaft, the front end of the box body is fixedly installed with a fixed plate, and the upper surface of the horizontal plate of the pressure plate is fixedly installed with a guide rod passing through the fixed plate, and the outer wall of the guide rod is sleeved with a pressure plate spring, and the pressure plate spring is located between the fixed plate and the horizontal plate of the pressure plate.

[0011] Furthermore, a protruding rod is integrally formed on the lower surface of the horizontal plate of the pressure plate.

[0012] Furthermore, the width adjustment plate is Y-shaped, consisting of two adjustment plates on the upper side and a transmission plate on the lower side. The adjustment plate is sleeved on the guide column and the push rod. The lower end of the transmission plate is bent inward to form a platform, and the auxiliary walking part is fixedly installed on the platform.

[0013] Furthermore, the auxiliary walking part includes a fixed block, a cover plate and a rolling ball, and the fixed block is fixedly installed on the platform, the inner end surface of the fixed block is provided with a cylindrical groove, and the rolling ball is placed in the cylindrical groove, the cover plate is fixedly installed on the inner end surface of the fixed block, and a limiting hole is provided on the surface of the cover plate, and the diameter of the limiting hole is smaller than the diameter of the rolling ball.

[0014] Furthermore, steel balls are placed in a ring shape in the cylindrical groove, and the rolling ball is placed between the steel balls.

[0015] Furthermore, the lower surface of the width limiting plate is an inclined surface, and the inclined surface is in contact with the upper surface of the guide plate.

[0016] The beneficial effects of using the utility model are:

[0017] The utility model is designed with a width adjustment component, in which the inner end position of the rolling ball on the auxiliary walking part corresponds to the position of the width limiting plate. Through the contact between the rolling ball and the side wall of the wall, the position of the width limiting plate can be adjusted, and then the width of the space in the box can be adjusted, and finally the width of the laid cement is made the same as the thickness of the wall, avoiding waste of cement, and through dynamic adjustment, it can accurately adapt to walls of different thicknesses, and has better versatility.

[0018] The design of the auxiliary walking part in the utility model can limit the movement of the device, so that the device can move in a straight line, improve the stability during work, prevent rollover, reduce the labor intensity of workers, and improve the efficiency of cement laying.

[0019] The utility model is designed with a vibration wheel assembly. During the movement of this device, vibration is generated by the rotation of the eccentric wheel, so that the cement in the box can smoothly fall onto the paving wheel and then be laid on the wall, ensuring the smooth and continuous laying of the cement. At the same time, a compaction assembly is designed to compact the laid cement, enhance the bonding strength between bricks and cement, and improve the stability of the wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is one of the three-dimensional schematic diagrams of the present utility model.

[0021] Figure 2 This is the second three-dimensional schematic diagram of the present utility model.

[0022] Figure 3 It is a three-dimensional schematic diagram of the box body of the utility model.

[0023] Figure 4 It is a left view of the present utility model.

[0024] Figure 5 It is a left side sectional view of the present invention.

[0025] Figure 6 For this utility model Figure 4 Cross-sectional view along the AA direction.

[0026] Figure 7 It is a three-dimensional schematic diagram of the paving wheel of the utility model.

[0027] Figure 8 It is a three-dimensional schematic diagram of the auxiliary walking part of the utility model.

[0028] Figure 9 It is a cross-sectional view of the auxiliary walking part of the utility model.

[0029] The accompanying drawings include: 1. box body, 11. vibration wheel fixing frame, 12. guide column, 13. fixed plate, 14. discharge port, 15. fixed box, 16. vibration spring, 17. vibration block, 2. paving wheel, 21. main shaft, 22. walking wheel, 23. push plate, 24. fixed shaft, 3. width limiting plate, 31. push rod, 32. push block, 4. width adjustment plate, 41. tension spring, 42. limiting ring, 5. auxiliary walking part, 51. fixed block, 52. cover plate, 53. rolling ball, 54. steel ball, 6. compacting assembly, 61. pressure plate, 62. moving rod, 63. cam, 64. guide rod, 65. pressure plate spring, 66. convex rod, 7. eccentric wheel, 8. guide plate, 9. handle. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Reference Figures 1 to 9 A cement paving device for construction includes a box body 1, a paving wheel 2, a vibrating wheel assembly, a width adjustment assembly and a compacting assembly 6. The paving wheel 2 and the vibrating wheel assembly are rotatably assembled on both sides of the lower surface of the box body 1, and the compacting assembly 6 is assembled at the front end of the box body 1. A guide plate 8 is fixedly installed in the box body 1 at an angle, and a handle 9 is fixedly installed on the box body 1.

[0032] This device is used during the wall construction process to lay cement on the top layer of bricks in the wall before laying the bricks.

[0033] Cement is loaded above the guide plate 8 in the box body 1 , and the cement flows out along the guide plate 8 and is paved by the paving wheels 2 . In actual application, the height of the box body 1 can be adjusted so as to load more cement at one time.

[0034] The vibration wheel assembly can drive the box body 1 to vibrate, so that the cement can flow out smoothly, ensuring the continuity of the cement paving work.

[0035] The width adjustment component is used to adjust the width of cement paving to make it suitable for the current wall thickness.

[0036] The compacting assembly 6 is used to compact the laid cement, thereby increasing the bonding strength between the bricks and the cement, and ultimately improving the stability of the wall.

[0037] The device is moved by pulling the handle 9 to carry out cement laying. During the laying process, the device can be stopped at any time to add cement into the box body 1.

[0038] like Figure 1 and Figure 2 As shown, the width adjustment assembly includes a width limiting plate 3, a width adjustment plate 4 and an auxiliary walking part 5. The two width limiting plates 3 are symmetrically moved and assembled in the box body 1. The outer wall of the width limiting plate 3 is fixedly installed with a push rod 31, and the push rod 31 passes through the side wall of the box body 1. The side walls of the box body 1 are fixedly installed with a guide column 12, and the width adjustment plate 4 is assembled on the guide column 12. The outer wall of the push rod 31 is fixedly installed with a push block 32, and the inner wall of the width adjustment plate 4 is in contact with the outer wall of the push block 32. The lower inner end of the width adjustment plate 4 is fixedly installed with an auxiliary walking part 5.

[0039] When the width adjustment plate 4 contacts the push block 32 , the innermost end of the auxiliary walking member 5 and the inner wall of the width limiting plate 3 are located in the same vertical plane, thereby ensuring that the cement laying width is the same as the wall thickness.

[0040] The auxiliary walking parts 5 are located on both sides of the box body 1 and contact the side walls of the wall to ensure the stability of the device. When the auxiliary walking parts 5 contact the front side walls, they will drive the width adjustment plate 4 to move, and then adjust the position of the width limiting plate 3, adjust the width of the space in the box body 1, and finally make the laid cement width the same as the wall thickness, realizing dynamic adjustment of the cement laying width according to the wall thickness.

[0041] A guide column 12 is fixedly installed on the side wall of the box body 1, and the guide column 12 passes through the width adjustment plate 4. A tension spring 41 is sleeved on the outer wall of the guide column 12. The two ends of the tension spring 41 are respectively fixedly installed on the side wall of the box body 1 and the inner wall of the width adjustment plate 4. The outer end of the guide column 12 is screwed to a limit ring 42.

[0042] exist Figure 1 In the embodiment, the tension spring 41 is in a stretched state.

[0043] When installing the width adjustment plate 4, first put it on the push rod 31 and the guide column 12, and complete the fixation of the tension spring 41 to the side wall of the box body 1 and the inner wall of the width adjustment plate 4. Welding can be used for installation here. At this time, the width adjustment plate 4 contacts the push block 32. Under the action of the tension of the tension spring 41, the width adjustment plate 4 will push the push block 32, and then drive the width limiting plate 3 to move inward in the box body 1, and then screw the limiting ring 42 on the guide column 12.

[0044] When in use, first pull the width adjustment plate 4 outward, then make the auxiliary walking part 5 contact the side wall of the wall. Since the width adjustment plate 4 moves outward, it no longer contacts the push block 32, and then rotate the limiting ring 42 to make it contact the outer wall of the width adjustment plate 4. After the box 1 is placed on the wall, cement is added to the space inside the width limiting plate 3 in the box 1. The pressure of the accumulated cement will push the width limiting plate 3 to move outward until the push block 32 releases the width adjustment plate 4.

[0045] According to actual conditions, the lengths of the guide column 12 and the push rod 31 can be adjusted to be suitable for thicker walls.

[0046] Specifically, if Figure 2 and Figure 5 As shown, the vibration wheel assembly includes an eccentric wheel 7, a vibration wheel fixing frame 11 is fixedly installed on the rear side of the lower surface of the box body 1, a rotating shaft is rotatably assembled in the vibration wheel fixing frame 11, and the eccentric wheel 7 is evenly fixedly installed on the rotating shaft.

[0047] The function of the eccentric wheel 7 is to periodically drive the box to shake up and down, so that the cement can flow out smoothly along the guide plate 8. The eccentric wheel 7 is provided with a rubber sleeve with friction patterns to increase the friction between it and the wall, ensure that it can rotate smoothly and provide vibration.

[0048] Specifically, if Figure 5 As shown, the vibration wheel assembly also includes an elastic vibration assembly, which includes a fixed box 15, a vibration spring 16 and a vibration block 17, and the fixed box 15 is fixedly installed on the lower surface of the inner cavity of the box body 1, the vibration spring 16 is fixedly installed in the fixed box 15, and the vibration block 17 is fixedly installed on the upper end of the vibration spring 16, and the vibration block 17 contacts the lower surface of the guide plate 8.

[0049] When the box body 1 shakes, it will drive the vibration spring 16 to generate fluctuations, and then make the vibration block 17 stretch back and forth along the vibration spring 16, repeatedly hitting the guide plate 8, which can enhance the vibration of the guide plate 8 and further improve the cement outflow effect.

[0050] Specifically, if Figures 5 to 7 As shown, the paving wheel 2 includes a main shaft 21 and a traveling wheel 22. A paving wheel mounting frame is integrally formed at the front end of the side wall of the box body 1, and the main shaft 21 is inserted into the paving wheel mounting frame. The traveling wheels 22 are evenly fixedly installed on the outer wall of the main shaft 21. Push plates 23 are evenly fixedly installed on the outer wall of the main shaft 21 and located between adjacent traveling wheels 22. Fixed shafts 24 are integrally formed at both ends of the main shaft 21. A discharge port 14 corresponding to the paving wheel 2 is opened on the lower side of the front end of the box body 1, and the lower end of the guide plate 8 is fixedly installed on the lower end surface of the discharge port 14.

[0051] The cement flows out from the discharge port 14 and falls onto the inner side of the paving wheel 2 , and then the rotation of the paving wheel 2 drives the cement to be laid on the wall.

[0052] There are a total of 4 walking wheels 22 and they are evenly distributed, so that it can be used for walls of different thicknesses. The distribution of the eccentric wheels 7 on the rotating shaft is the same as that of the walking wheels 22. Friction patterns or rubber sleeves with friction patterns are provided on the walking wheels 22 to ensure that the walking wheels 22 can rotate during the movement of the device, thereby ensuring that the cement can be evenly and effectively laid on the wall.

[0053] A push plate 23 is provided, and during the movement of the device, the cement that has fallen onto the main shaft 21 of the paving wheel 2 can be pushed onto the wall. When the device stops, the push plate 23 can block the cement to prevent it from falling out.

[0054] Specifically, if Figure 5 and Figure 6 As shown, the compacting assembly 6 includes a pressure plate 61, a moving rod 62 and a cam 63. The pressure plate 61 is an L-shaped plate. The two moving rods 62 are respectively fixedly mounted on the rear surface of the vertical plate of the pressure plate 61. The two cams 63 are both fixedly mounted on the fixed shaft 24. The moving rod 62 is transmission-connected to the cam 63, and the moving rod 62 is located above the fixed shaft 24. The front end of the box body 1 is fixedly mounted with a fixed plate 13, and the upper surface of the horizontal plate of the pressure plate 61 is fixedly mounted with a guide rod 64 that passes through the fixed plate 13. The outer wall of the guide rod 64 is sleeved with a pressure plate spring 65, and the pressure plate spring 65 is located between the fixed plate 13 and the horizontal plate of the pressure plate 61.

[0055] The pressure plate spring 65 is always in a compressed state.

[0056] When this device moves, the paving wheel 2 rotates, which will drive the fixed shaft 24 and the cam 63 to rotate, and then drive the moving rod 62 and the pressure plate 61 to move. Cooperating with the elastic force of the pressure plate spring 65, the pressure plate 61 can move up and down periodically, thereby compacting the laid cement and making the cement evenly distributed on the wall, improving the cement laying effect and increasing the stability of the wall.

[0057] The outer surfaces of both ends of the main shaft 21 are provided with threads, which can be screwed to the cover body. The cover body is used to cover the fixed shaft 24 and the cam 63. The cover body is provided with a hole for the moving rod 62 to pass through. The width of this hole is greater than the amplitude of the moving rod 62 to move up and down.

[0058] Specifically, if Figure 1 As shown, a protruding rod 66 is integrally formed on the lower surface of the horizontal plate of the pressure plate 61 to improve the compaction effect.

[0059] In practical applications, the length of the pressing plate 61 and the thickness and number of the protruding rods 66 can be adjusted according to actual conditions.

[0060] Specifically, if Figure 1 As shown, the width adjustment plate 4 is Y-shaped, consisting of two adjustment plates on the upper side and a transmission plate on the lower side. The adjustment plate is sleeved on the guide column 12 and the push rod 31. The lower end of the transmission plate is bent inward to form a platform, and the auxiliary walking part 5 is fixedly installed on the platform.

[0061] Specifically, if Figure 8 and Figure 9 As shown, the auxiliary walking part 5 includes a fixed block 51, a cover plate 52 and a ball 53, and the fixed block 51 is fixedly installed on the platform, the inner end surface of the fixed block 51 is provided with a cylindrical groove, and the ball 53 is placed in the cylindrical groove, the cover plate 52 is fixedly installed on the inner end surface of the fixed block 51, and a limiting hole is provided on the surface of the cover plate 52, and the diameter of the limiting hole is smaller than the diameter of the ball 53.

[0062] The rolling ball 53 can be a rubber ball, or a metal ball wrapped with a rubber sleeve on the outside to avoid damage to the wall.

[0063] Since this device will shake up and down due to the action of the vibration wheel assembly during movement, the ball 53 is used here to achieve both linear movement and up and down rolling. When this device moves and shakes, it can provide stable limits from both sides without forming resistance to movement, thereby improving the stability of the application of this device.

[0064] Specifically, if Figure 9 As shown, steel balls 54 are placed in a ring shape in the cylindrical groove, and the rolling balls 53 are placed between the steel balls 54 to reduce the friction of the rolling balls 53 when rotating.

[0065] Specifically, the lower surface of the width limiting plate 3 is an inclined surface, and the inclined surface is in contact with the upper surface of the guide plate 8 .

[0066] The above content is only a preferred embodiment of the present invention. For ordinary technicians in this field, many changes can be made in the specific implementation methods and application scope based on the concept of the present invention. As long as these changes do not deviate from the concept of the present invention, they all fall within the scope of protection of the present invention.

Claims

1. A cement paving device for building construction, characterized by: It includes a box body, a paving wheel, a vibrating wheel assembly, a width adjustment assembly and a compacting assembly. The paving wheel and the vibrating wheel assembly are respectively rotatably mounted on both sides of the lower surface of the box body. The compacting assembly is mounted on the front end of the box body. A guide plate is fixedly installed in an inclined manner in the box body, and a handle is fixedly installed on the box body. The width adjustment assembly includes a width limiting plate, a width adjustment plate and an auxiliary walking member, the two width limiting plates are symmetrically movably assembled in the box body, the outer wall of the width limiting plate is fixedly installed with a push rod, and the push rod passes through the side wall of the box body, the side walls of the box body are fixedly installed with a guide column, and the width adjustment plate is assembled on the guide column, the outer wall of the push rod is fixedly installed with a push block, and the inner wall of the width adjustment plate is fitted with the outer wall of the push block, and the lower inner end of the width adjustment plate is fixedly installed with an auxiliary walking member; A guide column is fixedly installed on the side wall of the box body, and the guide column passes through the width adjustment plate. A tension spring is sleeved on the outer wall of the guide column. The two ends of the tension spring are respectively fixedly installed on the side wall of the box body and the inner wall of the width adjustment plate. The outer end of the guide column is screwed on the limit ring.

2. A cement paving device for construction according to claim 1, characterized in that: The vibration wheel assembly includes an eccentric wheel. A vibration wheel fixing frame is fixedly installed on the rear side of the lower surface of the box body. A rotating shaft is rotatably assembled in the vibration wheel fixing frame, and the eccentric wheel is evenly fixedly installed on the rotating shaft.

3. A cement paving device for construction according to claim 2, characterized in that: The vibration wheel assembly also includes an elastic vibration assembly, which includes a fixed box, a vibration spring and a vibration block. The fixed box is fixedly installed on the lower surface of the inner cavity of the box, the vibration spring is fixedly installed in the fixed box, and the vibration block is fixedly installed on the upper end of the vibration spring, and the vibration block contacts the lower surface of the guide plate.

4. The cement paving device for construction according to claim 1, characterized in that: The paving wheel includes a main shaft and a traveling wheel. A paving wheel mounting frame is integrally formed on the front end of the side wall of the box body, and the main shaft is inserted into the paving wheel mounting frame. The traveling wheels are evenly fixedly installed on the outer wall of the main shaft. Push plates are evenly fixedly installed on the outer wall of the main shaft and located between adjacent traveling wheels. Fixed shafts are integrally formed on both ends of the main shaft. A discharge port corresponding to the paving wheel is opened on the lower side of the front end of the box body, and the lower end of the guide plate is fixedly installed on the lower end surface of the discharge port.

5. A cement paving device for construction according to claim 4, characterized in that: The compacting assembly includes a pressure plate, a moving rod and a cam. The pressure plate is an L-shaped plate. The two moving rods are respectively fixedly installed on the rear surface of the vertical plate of the pressure plate. The two cams are fixedly installed on the fixed shaft. The moving rod is connected to the cam in a transmission manner, and the moving rod is located above the fixed shaft. The front end of the box body is fixedly installed with a fixed plate, and the upper surface of the horizontal plate of the pressure plate is fixedly installed with a guide rod that passes through the fixed plate. The outer wall of the guide rod is sleeved with a pressure plate spring, and the pressure plate spring is located between the fixed plate and the horizontal plate of the pressure plate.

6. A cement paving device for construction according to claim 5, characterized in that: A convex rod is integrally formed on the lower surface of the horizontal plate of the pressing plate.

7. The cement paving device for construction according to claim 1, characterized in that: The width adjustment plate is Y-shaped and consists of two adjustment plates on the upper side and a transmission plate on the lower side. The adjustment plate is sleeved on the guide column and the push rod. The lower end of the transmission plate is bent inward to form a platform, and the auxiliary walking part is fixedly installed on the platform.

8. The cement paving device for construction according to claim 7, characterized in that: The auxiliary walking part includes a fixed block, a cover plate and a rolling ball, and the fixed block is fixedly installed on the platform. The inner end surface of the fixed block is provided with a cylindrical groove, and the rolling ball is placed in the cylindrical groove. The cover plate is fixedly installed on the inner end surface of the fixed block. The surface of the cover plate is provided with a limiting hole, and the diameter of the limiting hole is smaller than the diameter of the rolling ball.

9. The cement paving device for construction according to claim 8, characterized in that: Steel balls are placed in a ring shape in the cylindrical groove, and the rolling balls are placed between the steel balls.

10. The cement paving device for construction according to claim 1, characterized in that: The lower surface of the width limiting plate is an inclined surface, and the inclined surface is in contact with the upper surface of the guide plate.

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