Prestressed concrete pole tensioning equipment

Abstract

The utility model belongs to the field of tensioning machine equipment, and particularly relates to prestressed concrete pole tensioning equipment, which solves the problems of no clamping protection and difficulty in cooling in the prior art, and comprises a support frame and a slide rail plate, and the bottom of the support frame is fixedly connected with a movable base through a screw. The movable base is installed at the top of the sliding rail plate, two symmetrically-arranged lifting screw rods are jointly and rotationally installed in the support frame and the movable base, sliding blocks are arranged on the peripheral faces of the two lifting screw rods in a threaded and sleeving mode, and through arrangement of structures such as a clamping plate and an adjusting screw rod, when a tensioning ejector head starts to work, the sliding blocks are arranged on the sliding blocks in a threaded and sleeving mode; after the servo motor is started, the servo motor drives the placing plate to ascend, meanwhile, the rack plate drives the adjusting screw rod to move towards the tensioning top head through the linkage gear, the ejector rod is driven to move towards the tensioning top head, the tensioning top head is clamped in the middle of the placing plate, and overturning caused by center-of-gravity shift is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of tensioning machine equipment, in particular to prestressed cement rod tensioning equipment. Background Art

[0002] At present, tensioning machine equipment is a method of pre-introducing internal stress into concrete structures or components to improve their bearing capacity and durability. In the production of cement poles, prestressing technology is widely used. By prestressing the steel bars, the cement poles can resist deformation and cracking when subjected to external loads, thereby improving their service life and safety.

[0003] In the prior art, there is a prestressed tensioning device with the authorization announcement number CN210105335U. The patent has a simple structure and high safety and stability. It is suitable for the construction of various prestressed concrete structures. Its core feature is that it can ensure that the force direction of the prestressed components is consistent. By adjusting the moving block and the lifting rod, the length of the two sides of the tensioning plate can be synchronized to ensure force balance and maximize the utilization of tension. This innovative design improves construction efficiency and reduces engineering risks, providing an efficient and reliable solution for the construction of prestressed concrete structures. However, the patent lacks a clamping protection device. The prestressed tensioning operation involves applying a large tension to the steel strand. If the prestressed components, tensioning plates or steel strands are not effectively clamped and protected, position displacement is likely to occur. Position displacement will not only affect the accuracy and stability of the tensioning operation, but may also cause equipment damage or construction accidents, posing a threat to project progress and personnel safety. Utility Model Content

[0004] The utility model aims to provide a prestressed cement rod tensioning device, which solves the problems of no clamping protection and difficulty in cooling.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a prestressed cement rod tensioning device, comprising a bracket frame and a slide rail plate, the bottom of the bracket frame is fixedly connected to a movable base by screws, the movable base is installed on the top of the slide rail plate, the bracket frame and the movable base are internally mounted with two symmetrically arranged lifting screws for common rotation, the outer circumferences of the two lifting screws are threadedly sleeved with sliding blocks, the outer circumferences of the lifting screws are fixedly sleeved with driven bevel gears, a connecting plate is welded on one side of the sliding block, and a placement plate is welded on the bottoms of the two connecting plates, and a tensioning head is placed on the placement plate;

[0006] A servo motor is installed on one side of the movable base, and the output end of the servo motor is connected to a coaxially arranged cross bar through a coupling, and the cross bar is rotatably installed inside the movable base, and a fixed sleeve is provided on the outer circumference of the cross bar with two symmetrically arranged active bevel gears, and threaded sleeves are rotatably installed inside the two sliding blocks, and an adjusting screw is installed on the internal thread of the threaded sleeve, one end of the adjusting screw is welded with a fixed sleeve, and the internal sliding assembly of the fixed sleeve is equipped with a push rod, and the top sliding assembly of the placement plate is equipped with two symmetrically arranged clamping plates, one end of the push rod is welded on one side of the clamping plate, and one end of the threaded sleeve is welded with a linkage gear, and two symmetrically arranged rack plates are welded on the top of the movable base.

[0007] Preferably, a driving motor is installed on the top of the support frame, and an output end of the driving motor is connected to a coaxially arranged fan via a coupling.

[0008] Preferably, the driving bevel gear and the driven bevel gear are meshed with each other, a transverse groove is opened inside the movable base, the cross bar is rotatably installed inside the transverse groove, the transverse groove makes the rotation of the cross bar more stable, and the top of the placement plate is fixedly connected to a limit block, and the limit block fixes the position of the tensioning head.

[0009] Preferably, a vertical thread groove is provided inside the sliding block, the lifting screw is threadedly connected inside the vertical thread groove, two symmetrically arranged sliding grooves are provided inside the bracket frame, the sliding block is slidably connected inside the sliding groove, and the sliding groove makes the sliding of the sliding block more stable.

[0010] Preferably, the linkage gear is meshed with the rack plate, a transverse thread groove is provided inside the threaded sleeve, the adjusting screw is threadedly connected inside the transverse thread groove, and the transverse thread groove makes the adjusting screw rotate more stably.

[0011] Preferably, a circular groove is provided inside the fixing sleeve, the push rod is slidably connected inside the circular groove, and a strong spring is commonly connected between one end of the push rod and the inner wall of the circular groove.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model is provided with structures such as clamping plates and adjusting screws. When the tensioning jack starts to work, after the servo motor is started, the servo motor drives the placement plate to rise. At the same time, the rack plate drives the adjusting screw to move toward the tensioning jack through the linkage gear, and drives the push rod to move toward the tensioning jack, clamping the tensioning jack in the middle position of the placement plate to prevent tipping due to the shift of the center of gravity.

[0014] 2. The utility model arranges the fan and the driving motor and other structures. When the tensioning head starts to work, the driving motor is turned on, and the motor drives the fan to start moving. The fan quickly and effectively takes away the heat generated by the tensioning head, reduces the temperature of the equipment, and ensures the normal operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a front cross-sectional view of the utility model;

[0017] Figure 3 For the utility model Figure 2 Enlarged view of structure A;

[0018] Figure 4 For the utility model Figure 2 Enlarged view of structure B.

[0019] In the figure: 1. bracket frame; 2. rack plate; 3. linkage gear; 4. mobile base; 5. driven bevel gear; 6. servo motor; 7. placement plate; 8. lifting screw; 9. connecting plate; 10. threaded sleeve; 11. sliding block; 12. tensioning head; 13. clamping plate; 14. fan; 15. cross bar; 16. driving motor; 17. slide plate; 18. limit block; 19. ejector rod; 20. fixed sleeve; 21. spring; 22. active bevel gear; 23. adjusting screw. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4A prestressed cement rod tensioning device comprises a support frame 1 and a slide rail plate 17. The bottom of the support frame 1 is fixedly connected to a movable base 4 by screws. The movable base 4 is installed on the top of the slide rail plate 17. Two symmetrically arranged lifting screws 8 are installed inside the support frame 1 and the movable base 4 for common rotation. The threaded sleeves 10 on the outer circumferences of the two lifting screws 8 are provided with sliding blocks 11. The fixed sleeves 20 on the outer circumferences of the lifting screws 8 are provided with driven bevel gears 5. A connecting plate 9 is welded on one side of the sliding block 11. The bottoms of the two connecting plates 9 are commonly welded with a placement plate 7, and a tensioning head 12 is placed on the placement plate 7; a servo motor 6 is installed on one side of the movable base 4, and the output end of the servo motor 6 is connected to a coaxially arranged cross bar 15 through a coupling. The cross bar 15 is rotatably installed inside the movable base 4. The fixed sleeve 20 on the outer circumference of the cross bar 15 is provided with two symmetrically arranged active bevel gears 22. The interior of the sliding block 11 is rotatably installed with a threaded sleeve 10, and an adjusting screw 23 is installed on the internal thread of the threaded sleeve 10. A fixed sleeve 20 is welded to one end of the adjusting screw 23, and a push rod 19 is slidably assembled inside the fixed sleeve 20. The top of the placement plate 7 is slidably assembled with two symmetrically arranged clamping plates 13, one end of the push rod 19 is welded to one side of the clamping plate 13, and a linkage gear 3 is welded to one end of the threaded sleeve 10. Two symmetrically arranged rack plates 2 are welded on the top of the movable base 4. Through the arrangement of structures such as the clamping plate 13 and the adjusting screw 23, when the tensioning head 12 starts to work, after the servo 6 motor is started, the servo motor 6 drives the placement plate 7 to rise, and at the same time, the rack plate 2 drives the adjusting screw 8 to move toward the tensioning head 12 through the linkage gear 3, and drives the push rod 19 to move toward the tensioning head 12, clamping the tensioning head 12 in the middle position of the placement plate 7 to prevent tipping due to the shift of the center of gravity.

[0022] See also Figure 1-4 A driving motor 16 is installed on the top of the bracket frame 1, and the output end of the driving motor 16 is connected to a coaxially arranged fan 14 through a coupling. Through the arrangement of the fan 14 and the driving motor 16 and other structures, when the tensioning head 12 starts to work, the driving motor 16 is turned on, and the motor drives the fan 14 to start moving. The fan 14 quickly and effectively takes away the heat generated by the tensioning head 12, reduces the equipment temperature, and ensures the normal operation of the equipment.

[0023] See also Figure 1-4The driving bevel gear 22 is meshed with the driven bevel gear 5, a transverse groove is provided inside the movable base 4, the cross bar 15 is rotatably installed inside the transverse groove, the top of the placement plate 7 is fixedly connected to the limit block 18, a vertical thread groove is provided inside the sliding block 11, the lifting screw 8 is threadedly connected inside the vertical thread groove, two symmetrically arranged sliding grooves are provided inside the bracket frame 1, the sliding block 11 is slidably connected inside the sliding groove, the linkage gear 3 and the rack plate 2 are meshed, a transverse thread groove is provided inside the threaded sleeve 10, the adjusting screw 23 is threadedly connected inside the transverse thread groove, a circular groove is provided inside the fixed sleeve 20, the push rod 19 is slidably connected inside the circular groove, and a strong spring 21 is commonly connected between one end of the push rod 19 and the inner wall of the circular groove.

[0024] The specific implementation process of the utility model is as follows: first, place the tensioning head 12 on the placement plate 7, start the servo motor 6, the output shaft of the servo motor 6 drives the cross bar 15 to rotate, the cross bar 15 drives the driven bevel gear 5 to rotate through the active bevel gear 22, the driven bevel gear 5 drives the lifting screw 8 to rotate, the sliding block 11 rises, and the sliding block 11 drives the connecting plate 9 and the placement plate 7 to rise together. At this time, the placement plate 7 lifts the tensioning head 12. At the same time, under the action of the rack plate 2, the linkage gear 3 rotates, and the adjusting screw 23 drives the push rod 19 to move toward the tensioning head 12. At this time, the clamping plate 13 clamps the tensioning head 12 in the middle position of the placement plate 7 to prevent the tensioning head 12 from shaking during work and causing it to overturn.

[0025] In addition, when the tensioning head 12 is working, the driving motor 16 is started, and the driving motor 16 drives the fan 14 to start rotating. As the blades of the fan 14 rotate, the tensioning head 12 is cooled in time.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A prestressed cement rod tensioning device, comprising a support frame (1) and a slide rail plate (17), characterized in that: The bottom of the support frame (1) is fixedly connected to a movable base (4) by screws, and the movable base (4) is installed on the top of the slide rail plate (17). Two symmetrically arranged lifting screws (8) are installed inside the support frame (1) and the movable base (4) for co-rotation. The outer circumferences of the two lifting screws (8) are provided with a sliding block (11) by a threaded sleeve (10), and the outer circumferences of the lifting screws (8) are provided with a driven bevel gear (5) by a fixed sleeve (20). A connecting plate (9) is welded to one side of the sliding block (11), and a placement plate (7) is welded to the bottoms of the two connecting plates (9), and a tensioning head (12) is placed on the placement plate (7); A servo motor (6) is installed on one side of the movable base (4). The output end of the servo motor (6) is connected to a coaxially arranged cross bar (15) via a coupling. The cross bar (15) is rotatably installed inside the movable base (4). A fixed sleeve (20) is provided on the outer circumferential surface of the cross bar (15) with two symmetrically arranged active bevel gears (22). A threaded sleeve (10) is rotatably installed inside the two sliding blocks (11). An adjusting screw (23) is installed on the internal threads of the threaded sleeve (10). A fixed sleeve (20) is welded to one end of the adjusting screw (23). A push rod (19) is slidably mounted inside the fixed sleeve (20). Two symmetrically arranged clamping plates (13) are slidably mounted on the top of the placement plate (7). One end of the push rod (19) is welded to one side of the clamping plate (13). A linkage gear (3) is welded to one end of the threaded sleeve (10). Two symmetrically arranged rack plates (2) are welded to the top of the movable base (4).

2. The prestressed cement rod tensioning device according to claim 1, characterized in that: A driving motor (16) is installed on the top of the support frame (1), and an output end of the driving motor (16) is connected to a coaxially arranged fan (14) via a coupling.

3. The prestressed cement rod tensioning device according to claim 1, characterized in that: The active bevel gear (22) is meshed with the driven bevel gear (5); a transverse groove is provided inside the movable base (4); the transverse rod (15) is rotatably mounted inside the transverse groove; and the top of the placement plate (7) is fixedly connected to a limit block (18).

4. The prestressed cement rod tensioning device according to claim 1, characterized in that: The sliding block (11) has a vertical thread groove formed inside, the lifting screw (8) is threadedly connected inside the vertical thread groove, the support frame (1) has two symmetrically arranged sliding grooves formed inside, and the sliding block (11) is slidably connected inside the sliding grooves.

5. The prestressed cement rod tensioning device according to claim 1, characterized in that: The linkage gear (3) is meshed with the rack plate (2); a transverse thread groove is provided inside the threaded sleeve (10); and the adjusting screw (23) is threadedly connected inside the transverse thread groove.

6. The prestressed cement rod tensioning device according to claim 1, characterized in that: A circular groove is formed inside the fixing sleeve (20), the push rod (19) is slidably connected inside the circular groove, and a strong spring (21) is connected between one end of the push rod (19) and the inner wall of the circular groove.

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