A pier concrete curing device

Abstract

This application discloses a concrete curing device for pier columns, belonging to the technical field of concrete curing. It includes two mounting frames, with a movable frame sliding vertically on each frame. An upper annular plate and a lower annular plate are fixed to the movable frame, and an annular cloth strip is fixed between the upper and lower annular plates. The inner circumferential surface of the annular cloth strip can fit against the outer circumferential surface of the pier column. A semi-circular cloth strip is fixed to the inner circumferential surface of the upper annular plate, and the semi-circular cloth strip can fit against the top surface of the pier column. The two upper annular plates are a first annular plate and a second annular plate. A fixing plate is fixed to the top surface of the first annular plate, and an abutment plate is fixed to the top surface of the second annular plate. The fixing plate can be engaged and fixed with the abutment plate. A water spraying component for spraying water onto the annular and semi-circular cloth strips is provided on the fixing plate. This application keeps the annular and semi-circular cloth strips moist, thereby keeping the pier column moist, resulting in a better curing effect.

Description

Technical Field

[0001] This application relates to the technical field of concrete curing, and in particular to a concrete curing device for pier columns. Background Technology

[0002] Piers are an important component of building and engineering structures. They typically refer to vertical support members that support structures such as bridges, viaducts, and large buildings. Their main function is to bear and transfer the vertical and horizontal loads of the structure, ensuring the stability and safety of the entire structure.

[0003] If the height of the pier exceeds a certain limit, segmented construction is required to facilitate operations such as formwork support, rebar tying, and concrete pouring, reduce the risks of working at height, and improve construction safety. Segmented construction refers to pouring concrete within a certain height, curing that section of concrete separately until it reaches the design strength requirements, and then proceeding with the construction of the next section.

[0004] After the concrete is poured, it needs to be cured. The common curing method is to cover the surface of the poured pier with a damp cloth. However, in windy conditions, it is not easy for the damp cloth to adhere to the concrete surface and keep the concrete surface moist, resulting in poor curing effect. Summary of the Invention

[0005] In order to improve the poor curing effect of concrete that is difficult to maintain, this application provides a concrete curing device for pier columns.

[0006] The concrete curing device for pier columns provided in this application adopts the following technical solution: A concrete curing device for pier columns includes two mounting frames. A movable frame is vertically slidably mounted on the mounting frames. An upper annular plate and a lower annular plate are fixed on the movable frame. An annular cloth strip is fixed between the upper and lower annular plates. The inner circumferential surface of the annular cloth strip can fit against the outer circumferential surface of the pier column. A semi-circular cloth strip is fixed to the inner circumferential surface of the upper annular plate. The semi-circular cloth strip can fit against the top surface of the pier column. The two upper annular plates are a first annular plate and a second annular plate. A fixing plate is fixed to the top surface of the first annular plate, and an abutment plate is fixed to the top surface of the second annular plate. The fixing plate can be engaged and fixed with the abutment plate. A water spraying component for spraying water onto the annular cloth strip and the semi-circular cloth strip is provided on the fixing plate.

[0007] By adopting the above technical solution, the mounting frame is brought close to the pier, and the moving frame drives the upper and lower annular plates to move vertically to the position of the pier. Then, the upper and lower annular plates are moved towards the pier, so that the fixing plate on the first annular plate and the abutment plate on the second annular plate are engaged and fixed. This allows the semi-circular cloth strip to adhere to the top surface of the pier, and the annular cloth strip to adhere to the outer circumference of the pier. Then, water is sprayed onto the annular and semi-circular cloth strips using a water spraying component, keeping the annular and semi-circular cloth strips moist, thereby keeping the pier moist and achieving a better maintenance effect.

[0008] Preferably, the fixing plate includes a horizontal plate fixed to the top surface of the first annular plate, a connecting plate fixed to the side of the horizontal plate, a slot on the bottom surface of the connecting plate, a locking block mounted on the connecting plate by sliding vertically through the slot, a locking groove for inserting the locking block on the top surface of the abutment plate, a slider fixed to the side of the locking block, a sliding groove on the inner wall of the slot, the slider sliding vertically with the fixing plate through the sliding groove, a locking spring fixed to the top surface of the slider, and the top end of the locking spring being fixedly connected to the inner wall of the sliding groove.

[0009] By adopting the above technical solution, the first annular plate and the second annular plate are brought close to each other, so that the abutment plate is located below the connecting plate and the slot is aligned with the locking groove. The locking block is inserted into the locking groove under the elastic force of the locking spring, thereby fixing the first annular plate and the second annular plate in a locking manner.

[0010] Preferably, the bottom surface of the card block is provided with an abutting slope, and the abutting slope is located on the side of the card block near the abutting plate.

[0011] By adopting the above technical solution, when the abutting plate is moved toward the direction close to the horizontal plate, the abutting plate and the abutting inclined surface are in contact and push the locking block to move upward, so that the abutting plate and the horizontal plate can be in contact. When the abutting plate and the horizontal plate are in contact, the locking groove and the locking slot are aligned. Under the elastic force of the locking spring, the locking block moves downward and is inserted into the locking slot.

[0012] Preferably, magnetic blocks are fixed to both end faces of one of the lower annular plates, and iron blocks are fixed to both end faces of the other lower annular plate, wherein the magnetic blocks are capable of attracting the iron blocks.

[0013] By adopting the above technical solution, when the two lower annular plates approach each other, the magnetic block attracts the corresponding iron block, thereby keeping the two lower annular plates in contact with the outer circumference of the pier, and thus making it difficult for the annular strip to separate from the outer circumference of the pier.

[0014] Preferably, the water spray assembly includes a rotating rod rotatably mounted on the top surface of the fixed plate. A horizontally arranged water supply pipe is fixed to the top of the rotating rod. The water supply pipe is arranged radially along the first annular plate. A vertically arranged water supply pipe is connected to the end of the water supply pipe away from the rotating rod. A plurality of nozzles are installed at the bottom of the water supply pipe. A plurality of nozzles are installed on the side of the water supply pipe near the annular cloth strip.

[0015] By adopting the above technical solution, the rotating rod drives the water supply pipe one and water supply pipe two to rotate, the nozzle one sprays water onto the semi-circular cloth strip on the top surface of the pier, and the nozzle two sprays water onto the annular cloth strip on the outer periphery of the pier, thereby keeping the semi-circular cloth strip and the annular cloth strip moist.

[0016] Preferably, a horizontal plate is fixed on one of the movable frames, a water supply pipe is fixed on the horizontal plate, a water pump is fixed on one of the mounting frames, the inlet of the water pump is connected to a pumping pipe, the outlet of the water pump is connected to the water supply pipe, a connecting water pipe is connected to the bottom of the water supply pipe, the connecting water pipe is rotatably connected to the water supply pipe, and the bottom end of the connecting water pipe is connected to the water delivery pipe.

[0017] By adopting the above technical solution, the water pump is started, and the water pumping pipe delivers water to the water delivery pipe. The water delivery pipe then delivers water to the first and second water delivery pipes through the connecting water pipes, so that the first and second nozzles can spray water onto the semi-circular and annular cloth strips.

[0018] Preferably, a drive rod is rotatably mounted inside the fixed plate, a first gear is fixedly sleeved on the outer periphery of the drive rod, a second gear that meshes with the first gear is fixedly sleeved on the outer periphery of the rotating rod, a drive motor is fixedly mounted on the top surface of the fixed plate, and the output end of the drive motor is fixedly connected to the top end of the drive rod.

[0019] By adopting the above technical solution, the drive motor is started, which drives the drive rod to rotate. The drive rod drives the rotating rod to rotate through the first gear and the second gear. The rotating rod drives the water supply pipe one and the water supply pipe two to rotate, thereby achieving uniform water spraying on the semi-circular cloth strip and the annular cloth strip.

[0020] Preferably, an annular groove is formed on the outer circumferential surface of the lower annular plate, and a positioning block is fixed at the bottom end of the second water pipe. The positioning block slides and engages with the lower annular plate along the circumference of the lower annular plate through the annular groove.

[0021] By adopting the above technical solution, when the second water supply pipe moves along the circumference of the pier, the positioning block moves in the annular groove, thereby keeping the second water supply pipe vertical during the movement.

[0022] Preferably, the mounting frame includes a mounting plate with a mounting groove on its top surface. A mounting block is slidably mounted on the mounting plate along its length via the mounting groove. An adjusting threaded rod and a guide rod are mounted on the top surface of the mounting block. The adjusting threaded rod is rotatably connected to the mounting block. A control motor is installed inside the mounting block, and the output end of the control motor is fixedly connected to the bottom end of the adjusting threaded rod. The movable frame includes a movable plate, which is sleeved on the outer periphery of the adjusting threaded rod and the guide rod. The movable plate and the adjusting threaded rod are threadedly engaged.

[0023] By adopting the above technical solution, the control motor is started, which drives the adjusting threaded rod to rotate. The adjusting threaded rod drives the moving plate to move vertically, so that the upper annular plate moves upward to the top surface of the pier to be maintained. Then, the two moving plates are moved towards the pier, so that the two upper annular plates are joined and fixed together.

[0024] Preferably, the bottom surface of the mounting plate is provided with rollers, the top surface of the mounting plate is fixed with a cylinder, and the piston rod end of the cylinder is fixedly connected to the mounting block.

[0025] By adopting the above technical solution, after the mounting plate is moved to the direction close to the pier, the cylinder is activated. The cylinder drives the mounting block to move towards the direction close to the pier, and the moving frame drives the upper ring plate to the top surface of the pier to be maintained.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. Position the mounting frame close to the pier. Move the frame vertically to the position of the upper and lower annular plates. Then, move the upper and lower annular plates towards the pier, so that the fixing plate on the first annular plate and the abutment plate on the second annular plate are engaged and fixed. This allows the semi-circular cloth strip to adhere to the top surface of the pier and the annular cloth strip to adhere to the outer circumference of the pier. Then, use the water spraying assembly to spray water on the annular and semi-circular cloth strips to keep them moist, thus keeping the pier moist and achieving better maintenance results. 2. When the abutment plate is moved toward the direction close to the horizontal plate, the abutment plate and the abutment slope are in contact and push the locking block upward so that the abutment plate and the horizontal plate are in contact. When the abutment plate and the horizontal plate are in contact, the locking groove and the locking slot are aligned. Under the elastic force of the locking spring, the locking block moves downward and is inserted into the locking slot. 3. The rotating rod drives water pipe one and water pipe two to rotate. Spray nozzle one sprays water onto the semi-circular cloth strip on the top surface of the pier, and spray nozzle two sprays water onto the annular cloth strip on the outer circumference of the pier, thereby keeping the semi-circular cloth strip and the annular cloth strip moist. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the concrete curing device for pier columns according to an embodiment of this application.

[0028] Figure 2 This is a schematic diagram of the installation frame and the movable frame in the concrete curing device for pier columns according to an embodiment of this application.

[0029] Figure 3 This is a schematic diagram of the structure of the first annular plate and the second annular plate in the concrete curing device for pier columns according to an embodiment of this application.

[0030] Figure 4 yes Figure 3 Enlarged diagram of point A in the middle.

[0031] Reference numerals: 1. Mounting frame; 11. Mounting plate; 12. Mounting groove; 13. Mounting block; 14. Adjusting threaded rod; 15. Guide rod; 16. Control motor; 17. Roller; 2. Moving frame; 21. Moving plate; 22. Cylinder; 23. Connecting rod; 24. Fixing rod; 3. Upper annular plate; 31. Semi-circular cloth strip; 32. First annular plate; 33. Second annular plate; 34. Fixing plate; 341. Horizontal plate; 342. Connecting plate; 35. Abutment plate; 36. Snap-fit ​​groove; 4. Lower annular plate; 41. Annular cloth 42. Magnetic block; 43. Iron block; 44. Annular groove; 5. Locking block; 51. Locking slot; 52. Slider; 53. Slide groove; 54. Locking spring; 55. Abutting inclined surface; 6. Water spray assembly; 61. Water supply pipe one; 62. Nozzle one; 63. Water supply pipe two; 63. Positioning block; 64. Nozzle two; 65. Horizontal plate; 66. Water supply pipe; 67. Water pump; 68. Water suction pipe; 69. Connecting water pipe; 7. Rotating rod; 71. Drive rod; 72. First gear; 73. Second gear; 74. Drive motor. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0033] This application discloses a concrete curing device for pier columns. (Refer to...) Figure 1 and Figure 2The concrete curing device for the pier column includes two symmetrically arranged mounting frames 1. Each mounting frame 1 includes a horizontally arranged mounting plate 11, with rollers 17 installed at the bottom corners of each mounting plate 11. A movable frame 2, including a movable plate 21, is vertically slidably mounted on the mounting frame 1. A mounting groove 12 is formed on the top surface of the mounting plate 11, through which a mounting block 13 is slidably mounted along its length. A cylinder 22 is fixed to the top surface of the mounting plate 11, with the piston rod end of the cylinder 22 fixedly connected to the mounting block 13. A vertically arranged adjusting threaded rod 14 and guide rod 15 are mounted on the top surface of the mounting block 13. The bottom end of the adjusting threaded rod 14 is rotatably connected to the mounting block 13, and the bottom end of the guide rod 15 is fixedly connected to the mounting block 13. A control motor 16 is installed inside the mounting block 13, with the output end of the control motor 16 fixedly connected to the bottom end of the adjusting threaded rod 14. The movable plate 21 is sleeved on the outer periphery of the adjusting threaded rod 14 and the guide rod 15, and the movable plate 21 and the adjusting threaded rod 14 are threadedly driven together.

[0034] Start cylinder 22, mounting block 13 drives moving plate 21 toward the direction of approaching pier column, start control motor 16, control motor 16 drives adjusting threaded rod 14 to rotate, thereby driving moving plate 21 to move vertically.

[0035] Reference Figure 1 and Figure 2 A lower annular plate 4 is fixed to the side of the movable plate 21. A vertically arranged connecting rod 23 is fixed to the top surface of the lower annular plate 4, and an upper annular plate 3 is fixed to the top of the connecting rod 23. The upper annular plate 3 and the lower annular plate 4 are arranged parallel to each other. An annular cloth strip 41 is fixed between the upper annular plate 3 and the lower annular plate 4. The inner circumferential surface of the annular cloth strip 41 can fit against the outer circumferential surface of the pier. A semi-circular cloth strip 31 is fixed to the inner circumferential surface of the upper annular plate 3. The semi-circular cloth strip 31 can fit against the top surface of the pier.

[0036] Move the movable plate 21 upwards, and the movable plate 21 will drive the upper annular plate 3 and the lower annular plate 4 to move upwards. When the upper annular plate 3 is parallel to the top surface of the pier, move the movable plate 21 toward the direction closer to the pier, so that the semi-circular cloth strip 31 is in contact with the top surface of the pier, and the annular cloth strip 41 is in contact with the outer circumference of the pier.

[0037] Reference Figure 1 and Figure 2One of the lower annular plates 4 has magnetic blocks 42 fixed to both ends, and the other lower annular plate 4 has iron blocks 43 fixed to both ends. The magnetic blocks 42 can attract the iron blocks 43. The two upper annular plates 3 are a first annular plate 32 and a second annular plate 33, respectively. A fixing plate 34 is fixed to the top surface of the first annular plate 32, and an abutment plate 35 is fixed to the top surface of the second annular plate 33. The fixing plate 34 can be snapped and fixed to the abutment plate 35. A water spraying component 6 for spraying water onto the annular cloth strip 41 and the semi-circular cloth strip 31 is provided on the fixing plate 34.

[0038] The first annular plate 32 and the second annular plate 33 are aligned, and the fixing plate 34 and the abutting plate 35 are snapped together. At the same time, the two lower annular plates 4 are aligned, and the magnetic block 42 attracts the iron block 43, making it difficult for the two lower annular plates 4 to separate. This ensures that the annular cloth strip 41 is tightly attached to the outer circumference of the pier column, and the semi-circular cloth strip 31 is tightly attached to the top surface of the pier column. Then, the water spraying assembly 6 sprays water on the semi-circular cloth strip 31 and the annular cloth strip 41 to keep the pier column concrete moist.

[0039] Reference Figure 3 and Figure 4 The fixing plate 34 includes a horizontal plate 341 fixed to the top surface of the first annular plate 32, and a connecting plate 342 fixed to the side of the horizontal plate 341. A slot 51 is provided on the bottom surface of the connecting plate 342, through which a locking block 5 is vertically slidably mounted. An abutting inclined surface 55 is provided on the bottom surface of the locking block 5, located on the side of the locking block 5 closer to the abutting plate 35. A locking groove 36 for inserting the locking block 5 is provided on the top surface of the abutting plate 35. A slider 52 is fixed to the side of the locking block 5, and a sliding groove 53 is provided on the inner wall of the slot 51, through which the slider 52 slides vertically with the fixing plate 34. A locking spring 54 is fixed to the top surface of the slider 52, and the top end of the locking spring 54 is fixedly connected to the inner wall of the sliding groove 53.

[0040] When the abutment plate 35 is moved toward the direction close to the horizontal plate 341, the abutment plate 35 and the abutment inclined surface 55 come into contact and push the locking block 5 upward so that the abutment plate 35 and the horizontal plate 341 can be in contact. When the abutment plate 35 and the horizontal plate 341 are in contact, the locking groove 51 and the locking groove 36 are aligned. Under the elastic force of the locking spring 54, the locking block 5 moves downward and is inserted into the locking groove 36.

[0041] Reference Figure 1 and Figure 2The water spray assembly 6 includes a rotating rod 7 rotatably mounted on the top surface of a fixed plate 34, and a drive rod 71 rotatably mounted inside the fixed plate 34. A first gear 72 is fixedly fitted around the outer periphery of the drive rod 71, and a second gear 73 meshing with the first gear 72 is fixedly fitted around the outer periphery of the rotating rod 7. A drive motor 74 is fixedly mounted on the top surface of the fixed plate 34, and the output end of the drive motor 74 is fixedly connected to the top end of the drive rod 71. A horizontally arranged water supply pipe 61 is fixedly mounted at the top end of the rotating rod 7. The water supply pipe 61 is arranged radially along the first annular plate 32, and several nozzles 62 are installed at the bottom of the water supply pipe 61. A vertically arranged water supply pipe 63 is connected to the end of the water supply pipe 61 away from the rotating rod 7, and several nozzles 64 are installed on the side of the water supply pipe 63 near the annular cloth strip 41. An annular groove 44 is provided on the outer circumferential surface of the lower annular plate 4. A positioning block 631 is fixed at the bottom end of the water supply pipe 63. The positioning block 631 slides and engages with the lower annular plate 4 along the circumference of the lower annular plate 4 through the annular groove 44.

[0042] Start the drive motor 74, which drives the drive rod 71 to rotate. The drive rod 71 drives the rotating rod 7 to rotate through the first gear 72 and the second gear 73. The rotating rod 7 drives the water supply pipe 61 and the water supply pipe 63 to rotate, thereby achieving uniform water spraying on the semi-circular cloth strip 31 and the annular cloth strip 41.

[0043] Reference Figure 1 and Figure 2 One of the movable plates 21 is fixed with a vertically arranged fixing rod 24. A horizontally arranged horizontal plate 65 is fixed to the top of the fixing rod 24, and a water supply pipe 66 is fixed to the horizontal plate 65. One of the mounting plates 11 is fixed with a water pump 67. The inlet of the water pump 67 is connected to a suction pipe 68, and the outlet of the water pump 67 is connected to the water supply pipe 66. A connecting water pipe 69 is connected to the bottom of the water supply pipe 66, and the connecting water pipe 69 is rotatably connected to the water supply pipe 66. The bottom end of the connecting water pipe 69 is connected to a water delivery pipe 61.

[0044] The implementation principle of the concrete curing device for pier columns in this application embodiment is as follows: the mounting frame 1 is brought close to the pier column, and the moving frame 2 drives the upper annular plate 3 and the lower annular plate 4 to move vertically to the position of the pier column. Then, the upper annular plate 3 and the lower annular plate 4 are moved towards the direction close to the pier column, so that the fixing plate 34 on the first annular plate 32 and the abutting plate 35 on the second annular plate 33 are engaged and fixed, thereby making the semi-circular cloth strip 31 fit against the top surface of the pier column and the annular cloth strip 41 fit against the outer circumferential surface of the pier column. Then, the water spraying component 6 sprays water on the annular cloth strip 41 and the semi-circular cloth strip 31, so that the annular cloth strip 41 and the semi-circular cloth strip 31 are kept in a moist state, thereby keeping the pier column in a moist state and achieving a better curing effect.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A concrete curing device for pier columns, characterized in that: The device includes two mounting brackets (1), on which a movable bracket (2) is slidably mounted vertically. An upper annular plate (3) and a lower annular plate (4) are fixed on the movable bracket (2). An annular cloth strip (41) is fixed between the upper annular plate (3) and the lower annular plate (4). The inner circumferential surface of the annular cloth strip (41) can fit against the outer circumferential surface of the pier. A semi-circular cloth strip (31) is fixed to the inner circumferential surface of the upper annular plate (3), and the semi-circular cloth strip (31) can fit against the pier. The top surfaces are attached together. The two upper annular plates (3) are respectively the first annular plate (32) and the second annular plate (33). The top surface of the first annular plate (32) is fixed with a fixing plate (34), and the top surface of the second annular plate (33) is fixed with an abutment plate (35). The fixing plate (34) can be snapped and fixed with the abutment plate (35). The fixing plate (34) is provided with a water spraying component (6) for spraying water on the annular cloth strip (41) and the semi-circular cloth strip (31). The fixing plate (34) includes a horizontal plate (341) fixed to the top surface of the first annular plate (32). A connecting plate (342) is fixed to the side of the horizontal plate (341). A slot (51) is provided on the bottom surface of the connecting plate (342). A block (5) is installed on the connecting plate (342) by sliding vertically through the slot (51). A snap-fit ​​groove (36) for inserting the block (5) is provided on the top surface of the abutting plate (35). A slider (52) is fixed to the side of the block (5). A sliding groove (53) is provided on the inner wall of the slot (51). The slider (52) slides vertically with the fixing plate (34) through the sliding groove (53). A snap-fit ​​spring (54) is fixed to the top surface of the slider (52). The top end of the snap-fit ​​spring (54) is fixedly connected to the inner wall of the sliding groove (53). The water spray assembly (6) includes a rotating rod (7) rotatably mounted on the top surface of the fixed plate (34). A horizontally arranged water supply pipe (61) is fixed at the top of the rotating rod (7). The water supply pipe (61) is arranged radially along the first annular plate (32). A vertically arranged water supply pipe (63) is connected to the end of the water supply pipe (61) away from the rotating rod (7). A plurality of nozzles (62) are installed at the bottom of the water supply pipe (61). A plurality of nozzles (64) are installed on the side of the water supply pipe (63) near the annular cloth strip (41). A horizontal plate (65) is fixed on one of the movable frames (2), and a water supply pipe (66) is fixed on the horizontal plate (65). A water pump (67) is fixed on one of the mounting frames (1). A water pump (67) is connected to a water suction pipe (68) at its inlet and to a water supply pipe (66) at its outlet. A connecting water pipe (69) is connected to the bottom of the water supply pipe (66). The connecting water pipe (69) is rotatably connected to the water supply pipe (66), and the bottom end of the connecting water pipe (69) is connected to the first water supply pipe (61). The outer circumferential surface of the lower annular plate (4) is provided with an annular groove (44), and the bottom end of the second water pipe (63) is fixed with a positioning block (631). The positioning block (631) slides and engages with the lower annular plate (4) along the circumference of the lower annular plate (4) through the annular groove (44).

2. The concrete curing device for pier columns according to claim 1, characterized in that: The bottom surface of the card block (5) is provided with an abutting slope (55), which is located on the side of the card block (5) near the abutting plate (35).

3. The concrete curing device for pier columns according to claim 1, characterized in that: One of the lower annular plates (4) has magnetic blocks (42) fixed on both end faces, and the other lower annular plate (4) has iron blocks (43) fixed on both end faces. The magnetic blocks (42) can attract the iron blocks (43).

4. The concrete curing device for pier columns according to claim 1, characterized in that: A drive rod (71) is rotatably mounted inside the fixed plate (34). A first gear (72) is fixedly sleeved on the outer periphery of the drive rod (71). A second gear (73) that meshes with the first gear (72) is fixedly sleeved on the outer periphery of the rotating rod (7). A drive motor (74) is fixedly mounted on the top surface of the fixed plate (34). The output end of the drive motor (74) is fixedly connected to the top end of the drive rod (71).

5. The concrete curing device for pier columns according to claim 1, characterized in that: The mounting frame (1) includes a mounting plate (11), the top surface of which is provided with a mounting groove (12). The mounting plate (11) slides along its own length direction through the mounting groove (12) to install a mounting block (13). The top surface of the mounting block (13) is provided with an adjusting threaded rod (14) and a guide rod (15). The adjusting threaded rod (14) is rotatably connected to the mounting block (13). A control motor (16) is installed inside the mounting block (13). The output end of the control motor (16) is fixedly connected to the bottom end of the adjusting threaded rod (14). The movable frame (2) includes a movable plate (21), which is sleeved on the outer periphery of the adjusting threaded rod (14) and the guide rod (15). The movable plate (21) and the adjusting threaded rod (14) are threadedly driven together.

6. The concrete curing device for pier columns according to claim 5, characterized in that: The bottom surface of the mounting plate (11) is provided with rollers (17), and the top surface of the mounting plate (11) is fixed with a cylinder (22). The piston rod end of the cylinder (22) is fixedly connected to the mounting block (13).

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